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• Ceiling Mount Articulating Ceiling Type Jib Crane

versatile crane can move loads around corners, reach into machines or doorways, and swing under obstructions. This crane is perfect in applications that require an operator to rotate the jib in close to the pivot point. Capacities from 150 lbs. to 2000 lbs. with spans up to 16 ft. Ceiling mounted for a clear work area with no floor obstructionsAvailable in capacities from 150-2000 lbs. and spans up to 16 ft.360º at both pivot points (optional)Can be mounted to a platform supported from a Gorbel

• Wall/Column Cantilever Mount "I" Beam Jib Crane

of a wall bracket jib crane when headroom is at a premium.Provide hoist coverage for individual use in bays, along walls or columns, and as supplements to an overhead crane or monorail system.Capacities from 1/4 ton to 5 tons, with spans up to 20 ft.Utilize I-beam boom assemblies for heavier capacities and longer spans.

• Truck Crane Boom Equipment

Truck Crane STANDARD BOOM EQUIPMENTBOOM40-126’ (10.67- 33.53 m), four- section full power boom. Telescoping is mechanically synchronized with single lever control. The synchronization system consists of a single telescope cylinder and high strength leaf chains to extend and retract the

• Truck cane standard upperstructure equipment

type, with internal teeth. The swing bearing is bolted to the revolving upperstructure and to the carrier frame. SWING A hydraulic motor drives a double planetary reduction gear for precise and smooth swing function. Swing speed (no load) is 2.5 rpm. SWING BRAKE Heavy duty multiple disc swing brake is mechanically actuated from operator’s cab by foot pedal. Brake may be locked on or used as a momentary brake. An air operated 360º house lock is standard. RATED CAPACITY

• Truck Crane Standard Carrier Equipment

compartments are built into decking along with standard mud flaps. Aluminum engine housing with sliding cover optimizes engine access while reducing weight and improving corrosion resistance. AXLES AND SUSPENSION Rear Axles - 60,000 lb (27 216 kg) capacity tandem axles with heat treated housing have inter-axle differential with lockout. Axles are mounted on standard air suspension system over equalizer beams with shock absorbs to distribute weight evenly. Front Axles - 48,000

• Truck Crane Hydraulic System

and a single pump driven from hot shift transmission PTOs. A separate steering pump is driven directly from the engine. Combined system capacity is 131 gpm (495 Ipm). Remote hydraulic oil cooler is standard. Main Winch Pump 57.3 gpm (216.9 Ipm) @ 4,500 psi (316.4 kg/cm2) Boom Hoist and Telescope Pump 42.6 gpm (161.3 Ipm) @ 4,500 psi (316.4 kg/cm2) Outrigger and Swing Pump 21.2 gpm (80.3 Ipm) @ 3,500 psi (246.1 kg/cm2) Power Steering Pump 8 gpm (30.3 lpm)

• A Crane and Heavy Equipment Maintenance Plan

Key Element Equipment Maintenance Plan1. Organizational Planning and Support.a. Clear expectations, set operating expectancies.b. Management and employee involvement.c. Develop (and rank) improvement needs and opportunities through loss histories.2. Standards and Practices.a. Implement maintenance standards.b. Follow manufacturer’s recommended maintenance practices at recommended intervals.c. Plan for maintenance needs and supplies. 3. Training.a. Site training systems for all personnel

• New requirements about crane maintenance and competent inspecting person

to the instructions of the designer and manufacturer, and with relevant Australian Standards, codes of practice and legislation. For renewals of plant registration, owners of mobile and tower cranes now need to declare that: for the 12 months before the application, the crane was maintained to the instructions of the designer and manufacturer, and with relevant Australian Standards, codes of practice and legislation before the application, the crane was inspected by a competent

• Testing and Examination of Cranes and Certain Lifting Appliances

form of a certificate of test. A specimen of the certificate showing the particulars which should be included is shown as form CLA.1. in Appendix I. Tests carried out in the UK on cranes would satisfy the requirements of this Regulation. 2. The method and type of test cannot be specified in the Regulations as this depends upon many factors and the competent person will decide upon the manner and extent of the test. 3. The aim of a test is to demonstrate that the crane conforms to its

• Stability of Cranes and Lifting Appliances

which needs portable ballast for its stability has new anchorage or alterations of the ballast materials, it must be tested before use. This test must be made so that maximum pull is applied to the anchorage or ballast, and a load 25% higher than the maximum rated load is permissible if the same results can be achieved. The results of the test must be recorded on form number CLA.3. shown in Appendix I. The test and report must be carried out by the competent person. When

• Overhead Travelling Cranes

vicinity of the wheel track of the crane and there is a risk of being struck, effective measures must be taken to warn the operator of the crane, or indeed any other equally effective precaution, to ensure that the crane does not approach within 20' (6100mm) of that place .Various systems of work have been devised to ensure compliance with these requirements. Some examples are as follows -• The temporary construction of stop blocks on the rails and the electrical isolation of the particular

• Tower Crane Superstructure

Engine Shanghai Diesel D6114ZLG1 B engine with electronic control, rated output power 200kW, rated speed 1800 rpm., max. out torque 1100N.m, emission in compliance with European Construction Machinery Stage II. Control System Intelligent computer integrated program control system Is the key technology of the crane. PLC program controller

• Tower Crane Carrier

axial piston variable displacement motor, can be operated synchronously or indepen- dently to realize straight travel and turning around. Travel Speed Variable displacement motor can realize infinitely variable drive, max. speed 1.2 km/h, stable and fast travel.

• Tower crane lifting boom

jib is connected with boom by strut and front and rear guy cable, and reach its working radius with raising and lowering of boors luffing gear. Fixed jib strut is a-shaped two chords box type structure with good stability, strut length is 4.25m. Construction: jib butt 4.5m, jib insert 4.5mx2, jib top 4.5m. Gantry Gantry is one of the important structural parts, the front foot is box-type structure of twin tubular chard, and the rear foot is folded pendant. Hook Block Standard

• YGMT Crane types

sense of superior products and honesty, it will continuously meet customer’s demands of high quality and perfect service. Cranes specification and capacity Ladle Crane : capacity from 50t to 480t Slab Tong Crane: capacity from 25t to 112t Material Charging Crane: capacity from 20t to 110t Magnet Crane Hydropower Station Bridge Crane with single trolley: capacity from 50t to 1200t,double-trolley capacity from 100t to 500t Hydropower Station Gantry Crane: capacity

• Overhead Crane Inspection

give you a false reading. Replace a loose or stretched bolt rather than tighten it. It probably has been damaged. Be sure to replace the bolt with a grade 8 or beter. If there are bolts near by that show signs of looseness, then replace them all. 2. Cracked Welds Inspection Check cracks in the structure and in all welds. A crack in a weld will always start on the end and work itself along the entire weld until it fails completely.Many times a crack in the paint will be a clue to a weld that is

• Cranes, lifting appliances and fork lift trucks

The Regulations apply to cranes and lifting appliances used in the manner described in Regulation 2. The terms "cranes" and "lifting appliances" are defined legally in Regulation 1 which deals with the interpretation of various expressions used in the Regulations. "Crane" means:- "An appliance incorporating a structural member above ground

• Coupled Cranes

crane must not exceed 75% of the safe working load of that crane If an operation requires the use of more than two cranes to raise one load, the operators responsible will be required to apply for a certificate of exemption under Regulation 27.

• Safe Access To, and Egress From, Cranes or Lifting Appliances

of ladders is attached to a crane or lifting appliance which exceeds 30' (9140mm) in height, suitable landing places must be provided at every 30' wherever possible. These landing places must have secure fencing to a height of at least 3' (920mm) which should consist of upper and lower guard rails. Suitable guard hoops must also be fitted at regular intervals on the ladder.

• Brakes, Controls, Derricking Jibs and Cabins for Operators of Cranes

provided for heating must not be of a type where offensive or injurious fumes may be given off. Powers of Inspectors to Require Cranes and Lifting Appliances To Be Tested In cases where a Health and Safety Inspector, appointed under Article 12 of the Health and Safety at Work (Jersey) Law, 1989, has reasonable grounds for considering that a crane or lifting appliance is unsafe, the following action may be taken The Inspector may, by written notice, require a test and thorough

• Safe Means of Access and Egress and Safe Place of Work for Persons Engaged in Lifting Operations

"maintained", as defined in Regulation 1, see page 9, paragraph 17 Adequately secured Adjusted at regular intervals to ensure a safe angle of inclination to the horizontal Ships gangway and accommodation ladders must not be less than 22" wide (560mm) and be provided with guard rails or ropes or chains at a height of at least 3' (920mm). All places of work where persons are engaged in lifting operations must, at all times, be safe.

• Raw Materials of manufacture cranes

manufacture cranes is steel. Steel is an alloy of iron and a small amount of carbon. For structures that do not require very high strength, a common form of steel known as carbon steel is used. By definition, carbon steel contains less than 2% of elements other than iron and carbon. Carbon steel exists in a wide variety of forms. The most important factor in determining the properties of carbon steel is the amount of carbon present, which ranges from less than 0.015% to more than 0.5%. For

• News conference addresses concerns over tower crane safety

of a role cranes play in our society, and how tower cranes are a “reliable technology” and have been used since the 1940s in construction projects. “Of the more than 3,000 tower cranes in North America, about 2,100 are in use on any given day,” said Dandrea. “With a conservative estimate of 50 lifts daily per crane, more than 105,000 lifts are executed safely every day.” Standards needed Bill Smith, president of NationsBuilders

• WALKING CRANE FOR OPERATION BY POWER OR HAND

Fig. 52 represents a walking crane operated by power and consisting of a boom, rotating around a fixed column mounted upon an extended truck, which latter travels upon a suitable rail upon the floor. Power is utilized for hoisting and lowering, and for propelling

• Design and Optimisation of Crane Jibs for Forklift Trucks

to simulate non structural elements, contacts, materials, etc. Concerning regulations, it has been necessary to make an adaptation of the regulation UNE-58536, because the specific regulation affecting these crane jibs (UNE 1726), was not enough restrictive. Moreover it has been necessary to estimate some translational and rotational velocities to apply the regulation. Furthermore, the welding of some parts has been simulated and analyzed, and it has been carried

• Overhead Crane and Bridge Crane

Bridge Cranes or likewise called overhead cranes are actually a kind of industrial material handling crane making use of a line andhook device which runs on a horizontal beam running along two widely separated rails. Numerous overhead cranes could be seeninside

• Double Legged Gantry Cranes

Category Type Size(Tons) Qty. Description Double Legged Gantry Cranes for Sale Gantry, Double Legged Single Girder 5 1 Wallace, 12' 0", Tri-Adjustable Semi-Gantry Cranes for Sale Semi-Gantry (P&H) Single Girder, TR 5 2 30'-0" Span, 20'-0" Lift, 460V, P&H Hoists Semi-Gantry (P&H) Single Girder, TR

• FACTORS BEHIND THE SELECTION OF CONSTRUCTION EQUIPMENTS

graphics model and database-centred models to select tower cranes. Different expert systems have also been developed to assist in equipment selection. Finally. there are artificial intelligence-based models. Harris and McCaffer (2001) have developed their equipment selection model based on multi-attribute decision-making. Dynamic programming-based models have also been developed for equipment selection. A number of computer programs have been developed to assist in the

• PORTABLE TRUCK-MOUNTED CRANE BOOMS

boom has comparatively little horizontal reach flexibility but does swing on a turntable support mechanism at its base on the truck. These booms are not designed for erection purposes but for material handling where the loads are not more than 10-20 tons, at the most. The truck-mounted crane booms are removable from the truck beds on which they are mounted. There are two forms of this portable type of equip- ment. One is the articulated, short height knuckleboom, which is frequently used to

• Guy Derrick

for general rigging, stone quarrying, and construction of refineries and chemical plants. A guy derrick can be described as a Chicago boom with its own integral column, called a mast, held vertical by six or more guy ropes, as shown in Figure 2.3. The guys radiate in a horizontal circle about the derrick and are spaced as evenly as site conditions permit. A common configuration would include a mast of about 125 ft (38 m) and a boom of about 100 ft (30 m), although both larger and smaller

• Jacking Towers

shifted laterally or the lift is from four points. When two towers are used, they may have to be anchored to a substantial moment-resisting footing or would need guys to restrain wind and side loading during the operation as shown in Figure 2.48. If the towers are guyed, the guys should be preloaded because of the base fixity. Preloaded guys imply larger deadmen for anchorages than passive guys. Strand jacking offers precise control over the load. A system can also be configured to

• Hydraulic Telescoping Gantries

or two hydraulic cylinders are mounted. A steel header beam is fitted across each pair of jacking units. In a typical operation, loads to be lifted are suspended from these beams by slings attached to lifting link yokes over the header (Figure 2.50). The assembly can be used in place for lifting, or can be made to travel along steel runway beams or on steel plates over concrete. The original and most common type of telescopic gantry utilizes large diameter multistage lift cylinders with

• Truck Carriers

Truck-type crane carriers should not be confused with ordinary commercial truck chassis. A crane carrier is designed and built for no other purpose than crane service. Figure 2.13 shows a carrier for a 300-ton model. It is still clear that this chassis is quite different from that of a standard truck. The largest units may have as many as nine axles. A variant is the so-called truck which has a telescopic boom and stabilizers

• All-Terrain Carriers

positions in both the chassis-mounted cab and in the operator's cab mounted on the rotating superstructure (Figure 4). To achieve maneuverability, these cranes typically have all- axle drive and steering as well as crab steering (Figure 2.15). Many machines are furnished with sophisticated suspension systems that maintain equalized axle loading on uneven surfaces while the crane is in motion or is static. New models are continuing to appear, and models with more than 800-ton (700-t)

• Tower-mounted crane

by multiplying ruled capacity in metric tons by the working radius in meters. This is done according to a method that averages a range of boom lengths and working radii. The smallest machines used for light construction have ratings of about 20 meter-tons and the very largest in production exceed this by a factor of about a hundred. Most used for heavy construction are in the range of 150 to 650 meter-tons. The cost associated with installing and removing a tower crane is small for the

• Mobile Crane Ground Support Capacity

success, there is actually great risk involved in doing this on most soils. Standard outrigger floats are limited in size by weight and stowage considerations and therefore can induce very high [15 tons or more per square foot (1.44 MN/m2)] bearing pressures. Soil shear failure is sudden (Figure 5.15) and often results in tipping. Cribbing is needed in most instances. The soil at any location is a unique blend of constituents that may include very fine particles such as silts

• Single Girder Overhead Cranes and Double Girder Overhead Cranes

Single Girder Overhead Cranes Capacity Range 0.5 tonne to 20 tonnes Span Range 3 meters to 30 meters Description of single girder overhead cranes Single girder dual motor cranes provide greater floor coverage than other type cranes. The close crane end approaches coupled with a close trolley

• Crane Classification

This is the lightest crane as far as duty cycle is concerned. Class B (Light Service): This service class covers cranes where service requirements are light and the speed is slow. Loads may vary from no load to occasional full rated loads with 2 to 5 lifts per hour, averaging 10 feet per lift. Typical examples are cranes in repair shops, light assembly operations, service buildings, light warehousing, etc. Class C (Moderate Service): This service covers cranes whose service requirements

• Crane Certification

used in construction or general industry to be certified. Furthermore, the Department of Labor does not give any accreditation to any firm for the purpose of certifying cranes used in construction or general industry (ie: cranes covered under 29 CFR 1926 or 29 CFR 1910). Such accreditation is provided only for certification of certain types of material handling equipment used in the maritime industry where, under 29 CFR 1919, such certification is required. So, what does crane certification

• Crane Overloads and Crane Test Loads

Crane Overloads - What is allowed? On a routine basis, the amount of load a crane can "legally" lift, as a percent of its rated capacity, is 100.0000%, with a tolerance of +.000%/-100% (get the idea?). All kidding aside however, ASME B30.2 does provide for what is termed "planned engineered lifts" where it is necessary to make very occasional lifts (generally 2 lifts/year) in excess of rated capacity(cranes 5 ton capacity and above). The procedure varies depending on whether the lift

• CABLE CRANES

Taut-line cableway towers can be fixed structures or traveling ones moving over parallel tracks. Specifications of Cable Crane Spans range between 1,000 and 4,000 m. But 10,000 m. spans are also met with. Standard capacity is 1 to 25 tonne while cableways rated at 150-tonne capacity arc also in use. The load hoisting speed is 1.5 to 0.9 m per second depending on the height and the conveying speed varies between 8 to 12 m/sec. Towers are spotted into the working position

• MOBILE CRANES INTRODUCTION

MOBILE CraneS (a) Truck mounted (b) Crawler mounted (c) Rail mounted locomotive (d) Floating cranes (e) Sky cranes Mobile crane (power driven) includes all type of traveling jib cranes, such as truck mounted, crawler mounted, and locomotive

• A New Approach for Controlling Overhead Traveling Crane Using Rough Controller

cranes became larger and they are being moved at high speeds, their manual operation became difficult. Consequently, methods of automating their operation are being sought. Two special inference engines (two rule-base) FLC had been done with [1-2]. Many researchers [1-3] deal with the fuzzy controller, some of researchers took one FLC only to control two system’s variables like [3]. In many real processes, control relies heavily upon human experience. Skilled human operators can control

• Crane accessories and auxiliary equipment

poles; connections ensure long-term power supply and minimize unplanned downtime Pre-assembled building blocks for simple assembly or replacement of current collector trolleys or complete straight sections provide optimum serviceability IP 23 or IP 24 high protection against accidental contact with sealing lip and integral expansion joints for optimum safety Travel unit Maintenance-free drives with anti-friction bearings lubricated for life, maximum bearing centers to accommodate

• Crane & Hoist Safety Responsibilities

Supervisors are responsible for: Ensuring that employees under their supervision receive the required training and are certified and licensed to operate the Cranes and hoists in their areas. Providing training for prospective crane and hoist operators. This training must be conducted by a qualified, designated instructor who is a licensed crane and hoist operator and a full-time [COMPANY] employee.

• Crane Rigging a Load and Crane Overloading

end. Follow the manufacturer's recommendations for the spacing for each specific wire size. Determine the center of gravity and balance the load before moving it. Initially lift the load only a few inches to test the rigging and balance. Crane Overloading Cranes or hoists shall not be loaded beyond their rated capacity for normal operations. Any crane or hoist suspected of having been overloaded shall be removed from service by locking open and tagging the main disconnect switch. Additionally,

• Material Handling Solutions

structure. Our heavy duty end frame design with square tubing uprights, knee braces and channel base provides stable lifting and movement. Nine Reasons to Choose YJM Cranes 1. Industry's Best Warranty 5 years on all Manual Cranes. 2. Industry's Best Delivery 5-Day Shipments are available for all standard manually operated cranes. 2- or 3-day service is also available for a premium. 3. Multiple Shipping Points With multiple manufacturing facilities, we ship from the

• Introduction of overhead crane operator

in this handbook, candidates may take the Practical Examination on either of the following overhead crane types: Cab-operated Pendant/remote control All overhead (bridge) and gantry cranes that meet the requirements of the ASME B30.2, B30.11, B30.16, and/or B30.17 standards and have powered functions for hoist, bridge, and trolley are covered by CCO certification exams. Note that the NCCCO Exam Management Committee draws questions from the ASME B30.2 standard for Overhead and

• Limiting Tower Crane Operator Fatigue

Operators and contractors both benefit from 72-hour seat policy When operators sit in a tower crane cab for 16 hours a day, a lot may go through their minds—and the longer they sit there, the more distracted they may become. Combine that with the constant radio chatter and directions given

• Radio Communication Can Assist Container Gantry Crane Operators in Marine Terminals

of communication is required between the operator's cab and the base of the gantry of all rail-mounted cranes. This requirement can be met by telephone, radio, a sound-signaling system or other effective methods, but not solely by hand-signaling, 29 CFR 1917.45(g)(10). The availability and use of radios to communicate with the crane operator is a particularly effective way to reduce the risk of injuries associated with container operations. In addition: The radio should be tested prior

• Tower Crane

Crane Key Specification ·  Square shaped structure of steel tube ·  Mian color: yellow ·  Function: hoisting ·  Attached devices: generator, reducer, driver cab, cable, counterweight ·  Certificates awarded: CQM, CE, TS, ISO9001:2000 ·  A-grade 315TM Certificate for producing, installation, rectification, and maintenance of tower crane issued by General National Quality Inspection Bureau ·  Safety system: installation of jib, balance arm, and rotary tower are in side-plate

• Luffing Tower Crane

[caption id="attachment_42" align="alignleft" width="360" caption="Luffing Tower Crane "][/caption] Luffing Tower Crane with Maximum Load of 16t and Working Radius Ranging from 15 to 60m Luffing Tower Crane Key Specifications/Special Features: Maximum Load: 16 T

• Topless Tower Crane

id="attachment_47" align="alignleft" width="360" caption="topless tower crane"][/caption] Topless Tower Crane Key Specifications/Special Features: ·  Max load 17t (17m) ·  Jib length 75m ·  Free standing height 60m ·  Mast section 2*2*3m ·  Tip load 2.6t (75m) Advantages: ·  The section of the jib is much larger than the standard topkit tower crane, hence the jib is more studier. ·  When there is need to place many cranes in one area, with over lapping jib, height of the

• Self-Raising Tower Crane

of tall buildings and equipment installation, is a type of self-raising multi-purpose tower crane equipped with level arm support, and it allows trolley derricking and upper slewing. its jib maximum length is 70m, with maximum lifting load of 12000KG. Main features of the tower crane are given below: ·  TOWER CRANE WITH CE (FOR EUROPEAN MARKET), ISO9000 CERTIFICATE(IN CHINA.) ·  TOP 1 IN GUANGDONG PROVICE, CHINA ·  Have 24 Years Experience In This Area ·  800 Staffs ·  Version:

• Double Girder Gantry Crane

[caption id="attachment_69" align="aligncenter" width="544" caption="Double Girder Gantry Crane"][/caption] Gantry crane is similar to an overhead crane except that the bridge for carrying the trolley or trolleys is rigidly supported on two or more legs running on fixed rails or other runway. The EOT gantry crane functions similarly

• Topless Tower Crane For Sale

adopt domestic famous factory products, reliable performance, good governing performance and shocklessness. Key Specifications/Special Features: ·  Max load 17t (17m) ·  Jib length 75m ·  Free standing height 60m ·  Mast section 2*2*3m ·  Tip load 2.6t (75m) Advantages: ·  The section of the jib is much larger than the standard topkit tower crane, hence the jib is more studier. ·  When there is need to place many cranes in one area, with over lapping jib, height of the

• Tower cranes

[caption id="attachment_234" align="alignleft" width="241" caption="Tower crane"][/caption] Over-long boom of tower crane is (50/55m),wide range of coverage. Heavy in section of mast section(1600*1600 or 1800*1800), good steel performance,complete tower crane is stable

• Single Girder Overhead Traveling Cranes

We manufacture single overhead traveling cranes using quality raw materials such as MS PLATES, MS SECTIONS, EN8, EN9, EN19, and EN24. Our range is safe to operate as it strictly complies to the IS standards. [caption id="attachment_180" align="alignright" width="241" caption="Single Girder Overhead Traveling Cranes"][/caption] Some of the features of our Single Girder Overhead

• Crane Gantry

connected with their process. Cranes used in the construction industry are mostly temporary structures either mounted on a vehicle which is built for the specific purpose of carrying the crane, or fixed to the ground. [caption id="attachment_172" align="aligncenter" width="514" caption="Crane Gantry"][/caption] Cranes may be controlled by various methods such as radio control, infrared control or a built in control station using a push button pendant or by an operator sitting in the cab

• Double Girder Overhead Traveling Cranes

cross travel and long travel. Safe to operate, it possesses all the modern operational controls. Some of the features of our Double Girder Overhead Traveling Cranes are as follows: [caption id="attachment_183" align="alignright" width="239" caption="Double Girder Overhead Traveling Cranes"][/caption] Modern Design Safe Operation as per IS 807 / 3177 and Hoist as per IS:3938 Economical Capacity - 1 Ton to 30 Ton  above Span - 5 Meters to 30 Meters above Hoist

• Jib Crane For Sale

We offer a wide range of self supported and bracket mounted type Jib Cranes having a capacity of 0.25 Tons to 5 Tons. Manufactured using quality raw material, our jib cranes have swiveling up to 360 degrees. Some of our self supported and bracket mounted type jib cranes features are: [caption id="attachment_188" align="alignright" width="243"

• Gantry Crane or Goliath Crane

used for both indoor and outdoor purposes. Fabricated using quality raw material our range is safe to operate and designed as per IS standard. Our Gantry and Goliath Crane Features: [caption id="attachment_191" align="alignright" width="243" caption="Gantry crane / Goliath crane "][/caption] Heavy and Light duty Indoor and Outdoor purpose Efficient and Safe Operation As per Is 807 and 3177 and Hoist as per IS ¿ 3938 Capacity - 0.5 Ton to 50 Tons Span - 5 Meters

• Wall Bracket Jib Crane

use in bays, along walls or columns, or as supplements to an overhead crane or monorail system. Wall Bracket Jib Cranes are the Most Economical Style of Jib Crane Capacities from 1/4 ton to 5 tons, with spans up to 30 ft. 180 - 200 degree rotation available. Require a structurally adequate wall or column to support the jib. Require sufficient clearance above the boom throughout its arc to accommodate the tie rod suspension.

• Heavy Duty Jib Cranes

and assembly operations where they can be overlapped with other jib cranes to provide staged coverage. Industrial Jib Cranes are available in floor mounted, and sleeve insert mounted styles Capacities from 500 to 10,000 lbs, with spans to 20 ft. Use I-beam boom assemblies for heavier capacities and longer spans Motorized Rotation Jib Cranes Available Typical uses of Jib Cranes: Circular coverage areas Outdoor applications such as loading docks Applications underneath

• Stainless Steel Jib Cranes

[caption id="attachment_244" align="alignleft" width="292" caption="Stainless Steel Jib Cranes"][/caption] Stainless Steel Jib Cranes For use in: Cleanrooms Pharmaceutical Applications Food Processing Corrosive Environments Benefits of  Stainless Steel

• Articulating Jib Crane

[caption id="attachment_251" align="alignleft" width="250" caption="Articulating Jib Crane"][/caption] Unlike other jib cranes, articulating jib cranes have a hinge or joint at the center of the horizontal section that lifts the load. This feature enables the user to

• Self Propelled Cranes

[caption id="attachment_265" align="alignleft" width="338" caption="Self Propelled Cranes"][/caption] Self Propelled Cranes are mobile cranes mounted on a wheeled chassis and have only one operator position from which the crane is controlled and the vehicle driven. The road

• Lorry Mounted Cranes

[caption id="attachment_268" align="alignleft" width="300" caption="Lorry Mounted Cranes"][/caption] Lorry Mounted Cranes -- these mobile cranes consist of a lattice or telescopic boom mounted on a specially adapted truck or lorry. They have two operating positions: the lorry

• Crane Steel Structures Test Problems

is therefore recommended to take the following measures rail mounting: (1) strictly control the rubber gasket height difference between high and low beams in the order of tracks is large, you should use iron leveling pads, and finally rubber mat; (2) bend using a larger hook bolt preload, compression rubber gasket, increasing the joint stiffness, and torque wrench should be used evenly distributed between the rail mounting bolts preload; (3) using double nuts and other more reliable anti-solid

• Crane Control program analysis and comparison

curve to achieve the purpose. This simple structure, low cost, but the speed varies greatly, the middle-speed instability. Strictly speaking, the program can not be referred to as speed, it can only improve the motor starting characteristics. (2) The master controller to control the motor speed single-phase and reverse decline The program used for general-purpose 1 6 ~ 50t bridge crane control circuit, which is characterized by reversible asymmetric circuit. Increase in tandem with each block

• Electric Hoist Failure Analysis and Treatment

voltage not connected, but unable to work, there are 3 general situations: (1) whether the electric hoist power supply system power transmission, usually by Shi Dianbi tests, such as did not get electricity, and other transmission after work; (2) hoist the main, the electrical control circuit is damaged, broken or bad line , also will hoist motor can not power, such a situation, to be the main repair, control circuit, repair, in order to prevent the main, three-phase motor control circuit to

• Metallurgical cranes on the technical requirements for special work

AQSIQ "quality to do special ?2007? 375" document, published in the use of non-metallurgical crane for lifting the molten metal in the remediation requirements, as follows, for everybody to learn, discuss and exchange. (A) has been used for general overhead crane lifting molten metal,

• General requirements of the safe operation of crane drivers

rope, brakes, security devices, carefully examine the reliability, timely reporting of irregularities. Second, the boot operation, should confirm the following in a safe state before the boot: (1) All the controller is placed in zero position; (2) crane and work independent of whether the district personnel, operations personnel are evacuated to safe areas; (3) Crane have not been cleared within the barrier; (4) crane and other equipment or a fixed minimum distance a building is in more than

• Customer Order cranes should know a few basic parameters

1, electric single-girder crane 2, electric single-girder overhead crane 3, the electric double girder crane 4, the technical parameters Type: Starting weight: () kg; Lifting Height: () m; Span: () m Cart travel distance: () m; specifications: (); Number: () Taiwan Supporting

• Crane Preventive Maintenance Checklist

electrical collector ring counterweight frame hydraulic pump(s) hydraulic hoses / tubes / fittings hydraulic pressure electrical wiring main hoist - motor / valves / lines main hoist - wrapping on drum main hoist - minimum (2) rope wraps auxilliary hoist - motor / valves & lines auxilliary hoist - wrapping on drum auxilliary hoist - minimum (2) rope wraps counterweight / mounting swing gear box electrocution warning sign (outside) counterweight warning

• Question About Tower Crane - 1

ladder C. Does not matter where you hold on to If your crane is fitted with a lift, how often should it be checked and tested by a competent person? A. Six months B. Weekly C. Yearly Tower cranes must be load tested in accordance with BS7121. How often should this be done? A. 6 years B. 4 yearly, after each erection of crane or after any alterations or repairs C. Yearly If your crane is fitted with a slip ring. This will prevent? A. The crane slipping over B. Rotating the crane

• Crawler Crane QUY50

caption="crawler crane quy50"][/caption] Item Unit Parameter Max. lifting capacity Boom t 50 Jib t 4 Max. load moment kN.m 1815 Boom length m 13?52 Boom elevating angle ° 0?80° Fixed jib length m 9.15?15.25 Fixed jib offset ° 10,30 Max. single line hoist speed( at 4th layer with no load) m/min 65 Max. single

• Mast Style Jib Crane

[caption id="attachment_375" align="alignleft" width="218" caption="Mast style jib crane"][/caption] Mast Style Jib Cranes are efficient because they do not require a foundation and the large base plate, but do require mounting at the top and bottom.  Available in both a full and drop cantilever,

• Question About Tower Crane - 3

clicks at a time and operate trolley in between adjustments? A. To stretch job time out B. So you do not over tension trolley rope C. Both A and B Tower cranes can work under special duties and carry out work with grabs according to BS7121? A. True B. False If your trolley rope breaks what would stop the trolley from running away? A. Stops at the end of the jib B. Rope brakeage safety device C. Hit emergency button Why are flat boards positioned on the side of a jib or on

• Oregon OSHA’s new crane standard for the construction industry

new crane standard for the construction industry – Cranes and derricks in construction – applies to all employers who are engaged in construction work and use cranes or derricks for construction. The standard takes effect Feb. 9, 2011. What equipment is covered? Oregon OSHA’s crane standard covers power-operated equipment used in construction that can hoist, lower, and horizontally move a suspended load – including, but not limited to: Articulating knuckle-boom

• Crane Component

for fabrication of economical cranes. BossBuyer crane components allow economic refurbishment of old cranes. Standardized end carriages, standardized wheel bogies, underslung trolleys, drive units with squirrel cage motors, electric hoists up to 125 t lifting capacity, conductor systems, contactor control panels, radio remote controls, variable frequency speed control equipments, etc. BossBuyer crane components represent many years of experience in combination with permanent development in

• BossBuyer Jib Cranes

Jib Crane Definition: A cantilevered boom or horizontal beam arm with bearings, hoist and trolley. This lifting machine may pick up loads in all or part of a circle around the column to which it is attached. Jib cranes can be sturdy enough to lift a

• Wall Mounted Jib Cranes

[caption id="attachment_367" align="alignleft" width="218" caption="Wall mounted jib crane"][/caption] Wall Mounted Jib Cranes are an economical and efficient way to move material when floor space is not available and digging a foundation for the crane is not feasible.  Tie rod jib cranes are affordable

• Rotary and Rectilinear Cranes

or other generator of power, and is self-propelling; usually being capable of both rotary and rectilinear motions. Rotary and Rectilinear Cranes are thus subdivided. Rotary Cranes 1. Swing cranes. - Having rotation, but no trolley motion. 2. Jib cranes. - Having rotation, and a trolley traveling on the jib. 3. Column cranes. - Identical with the jib-cranes, but rotating around a fixed column (which usually supports a floor above). 4. Pillar cranes. - Having rotation only; the pillar

• Electric Overhead Travelling Crane (EOT Crane) Parts

A Electric Overhead Travelling Crane (EOT crane) consists of two distinct parts 1. Bridge 2. Crab Bridge: The Bridge consists of two main girders fixed at their ends and connected to another structural components called the end carriages. In the two end carriages are mounted the main runners or wheels (four or more) which provide the

• Workstation Jib Cranes

capabilities up to a 1000 lb capacity. BossBuyer Enclosed Track Workstation Jib Cranes come in two styles: Freestanding Workstation Jib Cranes Capacities from 100 to 1,000 lbs. Standard spans up to 16 ft. Standard under boom heights to 12 ft. 360° rotation. Utilizes square or hexagonal base plate mounting secured by anchor bolts to your existing floor or a special foundation, as required by the loading condition. (Anchor bolts by others, or as optional equipment.) Wall

• BossBuyer Gantry Cranes

or provide its utility in more than one area Maneuver product in tight spaces or uneven surfaces Add affordable, supplemental supporting parts to an existing crane About Our Gantry Cranes: Gantry cranes here at BossBuyer are made with 2 main plans in mind: building a machine that gets the job done for the right price, and putting the safety of its users first. Avoid homemade or DIY cranes for sale from suppliers without proper training,

• Articulating Jib Cranes

for applications moving around beams, corners, reaching under or into machinery. Articulating jibs can be floor, wall, ceiling, or bridge crane mounted to best suit your application. [caption id="attachment_393" align="alignleft" width="218" caption="Articulating Jib Cranes"][/caption] BossBuyer Articulating Jib Cranes have capacities ranging from 150 to 2,000 lbs. with spans up to 16 feet. Freestanding and ceiling/bridge mounted articulating jib cranes offer 360° rotation. Articulating

• Wall Traveling Jib Cranes

BossBuyer Wall Traveling Jib Crane drive utilizes a squirrel cage motor with a double reduction spur gear reducer. Standard single speed controls include mainline contactor, control transformer, inverter acceleration control, and fuses in NEMA 3R, 4, 12 control enclosures. The wall traveling jib crane boom is fabricated from standard "S" beam with a vertical angle truss to reduce deflection. The jib crane boom and truss bolt to the back frame for ease of erection and assembly. IMPORTANT NOTE: Wall

• Wind and Tower Cranes

loading combines dead load and a storm wind that ideally should be suited to the locale where the crane is operating. Designed to European codes and standards, freestanding toner cranes are generally evaluated for storm winds of 94 mi/h (42 m/s) at jib elevation, but design practices with respect to wind may vary with the manufacturer or country of origin. Some areas are prone to more extreme winds. In the United States, these regions are on the Atlantic, Gulf, and Northwest coasts as

• Single-girder overhead travelling cranes with the new Demag DR rope hoist

Your benefits with the new Demag DR rope hoist optimised for crane applications Increased effidency with extended 2m*service life (1900-hour full load service life) Improved load handling with higher hoist and cross-travel speeds Low-sway load motions thanks to infinitely variable cross travel speeds Proportional pushbuttons in the controls for stepless motions

• Active Sway Suppression Techniques of a Gantry Crane System

respectively. Various attempts in controlling gantry cranes system based on feed-forward control schemes were proposed. For example, open loop time optimal strategies were applied to the crane by many researchers such as discussed in (Manson, 1992; Auernig and Troger, 1987). They came out with poor results because feed-forward strategy is sensitive to the system parameters (e.g. rope length) and could not compensate for wind disturbances. Another feed-forward control strategy is input shaping

• Rule about marking rated capacity of crane

The rated capacity of a crane shall be legibly marked on each side of the crane. Markings shall be legible from the ground or floor. Each load block of the hoisting units of the crane shall be legibly marked with its individual rated capacity. (2) Each crane designed and manufactured after January 1, 1971 shall have a service class rating as prescribed in “CMAA #70--Specifications for Top Running Bridge and Gantry Type Multiple Girder Electric Overhead Traveling Cranes,” 1970 edition,

• Rule about crane ladders; footwalks; stairways; escape devices

(1) When a fixed ladder provides access to a crane, it shall be as prescribed in general industry safety standard, Part 3. “Fixed Ladders,” being R 408.10301, et seq., which is referenced in R 408.11807. (2) A footwalk or a catwalk for or on a crane shall have a standard barrier as prescribed in general industry safety standard, Part 2. “Floor and Wall Openings, Stairways and Skylights,” being R 408.10201, et seq., which is referenced in R

• Rule about crane brakes and restraints

non-coasting mechanical drive, or other braking means. The brake or drive shall be capable of stopping the bridge within a distance, in feet, equal to 10% of the full load speed in feet per minute when traveling at full speed with full load. (2) A trolley of a crane shall meet the requirements of subrule (1) of this rule. (3) A crane that is being used out-of-doors shall have a positive mechanical restraint, such as, but not limited to, an automatic rail clamp, to secure the crane against

• YJCrane Gantry Crane

The gantry cranes that lift your productivity. YJCrane is a company that has always cared about engineering and manufacturing practical, robust, and durable lifting solutions. For more than 20 years, we have been innovating our equipment with thoughtful, customer requested capabilities. We have been able to do this because we listen to our most important advisors, our customers. We know that our customers understand their business better

• CRANE OPERATORS AND OPERATIONS QUALIFICATIONS

sufficient to operate the controls and to have an unobstructed view over the controls into the work area. (d) Have coordination between eyes, hands, and feet. (e) Be free of known convulsive disorders and episodes of unconsciousness. (2) An employee assigned to operate a crane shall have the ability to understand signs, labels, and instructions. (3) An employee who is operating a crane on the effective date of this part, and who does not meet the requirements of subrules (1)(a),

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