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FAQ About Lift Crane

• Types of Cranes

Cranes - these are Lifting devices designed to raise materials by means of rope operation and move the load horizontally within the limitations of any particular machine. The range of cranes available is very wide and therefore choice must be based on the loads to be

• Ceiling Mount Articulating Ceiling Type Jib Crane

Bridge Crane to allow the jib to swing under an obstruction or outside the normal coverage of a bridge cranePlatform mounting can deliver the benefits or an articulating jib to multiple work cellsEffortless rotationCan be used with hook mounted Lifting devices (electric, air, or vacuum)

• Construction and Maintenance of Cranes and Lifting Appliances

Construction and Maintenance of Cranes and Lifting Appliances Cranes and lifting appliances must be of good construction and be properly assembled. This means that they must be of good design which includes, amongst other things, being well built for the purpose for which

• Testing and Examination of Cranes and Certain Lifting Appliances

the type of person who would carry out the duties of testing and examining for the purpose of these Regulations. 6. The person should:- a) have the requisite knowledge and experiences, both theoretical and practical, of the type of crane or Lifting appliance to be tested and examined; to certify with confidence that it is capable of being used safely and it is free from patent defect and suitable in every way for the duty in which the crane or lifting appliance is to be used. Additionally,

• Stability of Cranes and Lifting Appliances

Where a crane or a Lifting appliance is to be used on a slope or on uneven or soft ground, precautions must be taken to prevent overturning. This can be done, for example, by reducing the slope, levelling the ground or by using suitable supports. If a situation

• Tower crane lifting boom

Tower crane Lifting boom comprises main boom and fixed jib, the structural type is lattice structure of four tubular chords with intermediate equal section and two end variable section, main boom chord and web rod are made of domestic high quality tube, with

• Tower Crane Safety Devices

hoist limit switch, anemometer, level gauge, hydraulic overflow valve, counterbalance valve, two-way hydraulic lock, stewing warning lamp and travel warning lamp, etc. Load Moment Limiter Detection function: automatically detect boom angle and Lifting load. Display function: real time display current actual load, working radius and boom angle. Warning function: automatically send out warning and stop crane operation when detecting actual load exceed rated load, boom out of limit angle. Detection

• YGMT Crane types

YGMT. Its marketing shares, including metallurgical crane, charging crane, slab tong crane, magnet crane; hydropower station bridge/gantry crane, common bridge/gantry crane, forging crane, quenching crane, load and unload crane, dry coke quenching Lifter, Nuclear power station polar crane, bridge girder erection machine and other special cranes. YGMT has provided 6000 cranes in the industry field of metallurgy, hydropower station, nuclear power station, heavy mining, machinery, energy, railway,

• Safe Crane Operations

a load Never hoist two or more separately the capacity of the crane even if the combined weight is with in the capacity of the craneNever wrap the hoist line around the load Never electrical load and/or hoist-limit switches or warning devices Start Lifts slowly and avoid shock loading Always place the hook directly over the center of gravity or the designated lifting point Use taglines to help maneuver the load Never use taglines to swing the loadBefore hoisting the load, check for loose parts that

• 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:-

• Coupled Cranes

The use of more than one crane to Lift the same load is sometimes called a "tandem lift". This is sometimes necessary when the load to be lifted exceeds the safe working load of a single crane, and a crane of an appropriate capacity for the load is not available. Lifting a load with two

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

Safe means of access and egress must be provided for operators of cranes and Lifting appliances. The equivalent standard of safety must also be provided for persons carrying out work on the crane or lifting appliance particularly work involving the examination, lubrication or repair where the person carrying out the work

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

Brakes, Controls and Other Safety Devices Every crane or Lifting appliance must be provided with an efficient braking system. The system must be capable of sustaining any load to be raised, lowered or suspended within its capacity. This requirement does not apply to self-sustaining cranes or hand operated

• Crane Lifting Operations - Operators of Cranes and Certain Lifting Appliances

A certificate of competence must exist for every operator of a crane, excavator, fork Lift truck, mechanical grab, mechanical shovel and piling machine. The certificate must be issued by The employer of the operator; or The owner of the equipment which the operator is using An operator who has not been certificated

• Crane Lifting Operations - Signalling

Where the load is not clearly visible or the hook of the crane or Lifting appliance is not clearly visible to the operator, a signaller (banksman) must be used to transmit the slingers instructions to the operator. All signals must be clear and concise and should, if they are visual signals, conform to the

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

This requirement, involving the provision of safe means of access and egress, is directed towards the employees who are involved in Lifting operations. This means the work involved in lifting operations, which includes the attaching of loads, using lifting gear, to cranes and lifting appliances prior to the loads being raised, lowered or suspended. Where dock workers need

• Crane Lifting Operations - Load Not To Exceed Safe Working Load

The safe working load of a crane or a Lifting appliance must never be exceeded under normal operating conditions.There are only two exceptions to this requirementWhere a proof load test is being carried out on a crane or lifting appliance under the supervision of a competent person for the

• Crane Lifting Operations - Secureness of Loads

Loads must be secured whilst being raised, lowered or suspended - they must not be capable of being easily displaced. Loads must be properly secured to the hook or other device of the crane or Lifting appliance and where the load comprises a number of parts, the load must be so constructed that each part is stable and not likely to become loose.Preventative measures must be taken to ensure that extraneous objects do not become displaced during

• Crane History

A crane is a machine that is capable of raising and lowering heavy objects and moving them horizontally. Cranes are distinguished from hoists, which can Lift objects but that cannot move them sideways. Cranes are also distinguished from conveyors, that lift and move bulk materials, such as grain and coal, in a continuous process. The word crane is taken from the fact that these machines have a shape

• Raw Materials of manufacture cranes

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 structures that require great strength, particularly in cranes designed to Lift very heavy objects, a variety of substances known as high-strength low-alloy (HSLA) steels are used. HSLA steels contain relatively low levels of carbon, typically about 0.05%. They also contain a small amount of one or more other elements

• Cranes,overhead traveling crane,Construction cranes,Tower cranes,Mobile cranes,Articulating cranes

Very few machines exist in as wide a variety of designs as cranes. Before the crane is constructed, the manufacturer must consider the site where it will be used and the weight it will need to Lift. In addition, cranes are often modified to suit the needs of the user. For these reasons, it is not much of an exaggeration to say that no two cranes are exactly alike. Cranes used for industrial purposes are generally designed to remain permanently

• The Manufacturing Process Of Crane

tubes, such as those used to form the latticed booms of large cranes, may be made by bending sheets of steel and welding the long sides together. They may also be made by piercing steel rods with a rotating steel cone. The cables used to Lift weights are made from steel wires. To make wire, steel is first rolled into a long rod. The rod is then drawn through a series of dies which reduce its diameter to the desired size. Several wires are then twisted together to form cable.Steel

• Crane Safety and Quality Control

would weaken the crane. Welds and bolts joints are inspected as well. The United States government sets specific regulations through the Occupational Safety and Health Administration that limit the weight that a specific crane is allowed to Lift. The Crane Manufacturers Association of America sets its own safety standards which exceed those required by the government. Special devices within the crane prevent the user from attempting to lift a weight heavier than that allowed. A completed

• Jib crane motions

Jib crane have the following motions: Hoisting motion Derricking or luffing motion Slewing motion Long travel motion Hoisting motion: It is used to Lift or lower the load. This is usually achieved by steel wire ropes being affixed to a crane hook or a grab hanging from the outer end of the jib. The rope is applied through some receiving arrangement and controlled and operated by a winch system.Derricking

• Gantry crane introduce

the two legs supporting the shape of a gantry-type crane bridge. This crane orbit on the ground, mainly used in open yard storage, shipyards, power plants, ports and railway stations to carry out cargo handling and installation. Gantry cranes Lifting bodies, car bodies and bridge operation structure, with essentially the same bridge crane. As a result of large-span cranes are mostly used to run the respective drive means to prevent operation of a crane skew have increased resistance, or even

• lifting crab of a EOT crane

The Lifting crab of a EOT crane is an independent two motion machine and consists of the hoist machinery built on to a frame, which is mounted on runner wheels, and driven by a motor through suitable gearing. The crab is also known as trolley. Various

• News conference addresses concerns over tower crane safety

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 Insurance Services Claims and Risk Management Services (NBIS), once was a crane operator

• WALKING CRANE FOR OPERATION BY POWER OR HAND

erection and for setting them in position. For work of this description these cranes are exceedingly convenient and economical.Estimates will be furnished on receipt of information as to whether to be operated by hand or power, maximum load to be Lifted, effective radius desired, length of longitudinal travel and height from floor to ceiling.

• Column Crane

and around which it is therefore desirable that the cranes should rotate. Thus arranged they have all the convenience and applicability of ordinary jib cranes.Estimates will be furnished on receipt of information as to the maximum load to be Lifted, height from floor to ceiling, effective radius desired, and distance from center to center of column, where they are so near as to limit the sweep of the crane. By limiting the latter to less than an entire revolution, the jib may be lengthened

• Design and Optimisation of Crane Jibs for Forklift Trucks

in order to check the numerical results and the methodology of design. The principal conclusions that are obtained are that it has been developed a methodology for the design, calculation and optimization of crane jibs for fork-Lift trucks, adapting the regulation UNE-58536 for movile cranes, becouse the norm UNE-1726 is not too much restrictive; so it was necessary to define the load cases, the boundary conditions, the loads, the materials, the welds models,

• Overhead Crane and Bridge Crane

for at least ten tons, double girder bridge cranes are normallyutilized. With the girder box configuration, one major benefit is the lower deadweight with a stronger integrity of the overall system. Onemore advantage will be the hoist so as to Lift the objects and the bridge that spans the area covered by the crane, together with atrolley so as to move along the bridge. Overhead Crane Application Overhead cranes are most generally used within the steel business. The steel is dealt with

• Cranes and hoists operating rules

operators shall comply with the following rules while operating the cranes and hoists: Do not engage in any practice that will divert your attention while operating the crane. Respond to signals only from the person who is directing the Lift, or any appointed signal person. Obey a stop signal at all times, no matter who gives it. Do not move a load over people. People shall not be placed in jeopardy by being under a suspended load. Also, do not work under a suspended

• Double Legged Gantry Cranes

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 10 2 30'-0" Span, 20'-0" Lift, 460V, P&H Hoists Crane Bridges Only for Sale Bridge Only-No Hoist Double Girder, TR

• FACTORS BEHIND THE SELECTION OF CONSTRUCTION EQUIPMENTS

selection. A number of computer programs have been developed to assist in the equipment-selection process. Similarly, commercial software is available that offers solutions for the selection and location of a specific crane model and for Lift planning (Meehan 2005). Examples are Compu-Cranc and LPS (NCI 2006). Cranimation and Tower-Management (Cranimax 2006), LiftPlanner (LiftPlanner Software 2006) and MethoCAD (Progistik 2006). These software packages, commonly used by engineering

• PORTABLE TRUCK-MOUNTED CRANE BOOMS

Another type of Lifting equipment is the portable boom attached to a flat-bed truck to load and unload material. This type of boom has comparatively little horizontal reach flexibility but does swing on a turntable support mechanism at its base on the truck. These booms

• Guy Derrick

be used to provide leverage for pulling the derrick around manually. Another method, sometimes used on steel erection derricks, makes use of a handwheel and gearing so that one person at the base of the derrick can swing the boom. The topping Lift is attached to the mast just below the gudgeon pin. The topping and load lead lines come into the mast at the top and above the boom foot, respectively, and run down the center of the mast. The lead lines run into the derrick base, which is

• Jacking Towers

can be inserted and support the load. With the crossbeam safely seated, the jacks can be retracted in preparation for the next increment of climbing. Thejacks are short and remain in place; climbing is accomplished by inserting solid-steel Lifting pistons each time thejacks are retracted. Between strokes, previously placed lifting pistons rest on the dog. There are twojacks located at the base of each tower; the lifting pistons are inserted, and the lock plates are located at the

• Hydraulic Telescoping Gantries

Telescophig gantries are typically used for heavy Lifting where mobile cranes or derricks are not feasible, where classic "jack and slide" procedures are awkward, or where other conditions make use of the gantry the most economical means to perform the work required. These systems first came into

• Truck Carriers

truck chassis. The mounting must meet specifications for frame stiffness, weight, and axle limitations. A boom truck, rated for up to 50 tons and reaching as high as 180 feet (55 m), has an advantage of being able to transport the loads it Lifts. Carriers must be designed for movement about the jobsite and on the highway. To accommodate those extremes, transmissions with as many as 33 forward gears are provided, and some carriers are equipped with special creeping gears as well.

• All-Terrain Carriers

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) capacity are available. Though pick- and-carry operations are usually permitted, outriggers are used for most Lifting.

• Tower-mounted crane

to be determined by its suitability to the work than by the country where the work is taking place. At least that is the broad picture; contractors in some localities cling longer to traditional practices than others. Tower cranes are the Lifting machines of choice worldwide for most mid- and high-rise building construction. They are used also on expansive sites where the broad hook sweep and the relative ease of coordinating multiple tower cranes is an advantage. There are niche

• Crane and Mobile Crane

of aviation belongs to the barnstormers and bush pilots who pushed their rudimentary craft to the limits with hardly a thought for risk. Likewise, crane operation was once a seat-of-the-pants skill governed largely by the notion that Lifting equipment could be used right up to the point of tipping over. Both cranes and aircraft of early vintage were machines with modest capabilities that responded almost like extensions of the operators themselves. Machines were relatively small

• Mobile Crane Clearances

will swing into nearby structures. The tail end of the superstructure requires a clear swing path, too. And, after completing the work, the crane must be able to extricate itself and lower its boom for dismantling. Far from all mobile-crane Lifts run against these constraints, but they are common enough to demand attention. It is embarrassing, to say the least, to send a crane to a job only to find that it is incapable of placing the loads where needed. Embarrassment may be only

• Crane Classification

the different crane classifications, as generally described by CMAA, are as follows: Class A (Standby or Infrequent Service): This service class covers cranes where precise handling of equipment at slow speeds with long idle periods between Lifts are required. Capacity loads may be handled for initial installation of equipment and for infrequent maintenance. Typical examples are cranes used in powerhouses, public utilities, turbine rooms, motor rooms, and transformer stations. This is the

• 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

• MOBILE CRANES INTRODUCTION

cranes is the different ways in which a standard model can be put to use by the mere change of attachments, such as electromagnets or buckets for handling of bulk materials. Performances factors in which various cranes differ include Lifting capacity, radius of operation, hoisting speed, speed of travel and speed of rotation of the boom. Lifting capacity of models usually purchased for industrial use ranges from 5 to 30 tonnes. The radius of operation depends, of course,

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

of the proposed rough controller is satisfactory. The crane can be considered as one of the most important tools used in industry to transfer loads from one desired position to another. Usually cranes have very strong structures in order to Lift heavy payloads in factories, in building construction, on ships, and in harbors. Until recently, cranes were manually operated. But when cranes became larger and they are being moved at high speeds, their manual operation became difficult. Consequently,

• Crane Rigging a Load and Crane Overloading

with the base only on the live end and the U-bolt only on the dead 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

• Material Handling Solutions

Material Handling Solutions For Your Unique Applications Since 1977, YJM has been an innovator and leader of Lifting loads in a work cell. YJM began as a manufacturer of Gantry Cranes and manually or power operated jib Cranes, including wall bracket, wall cantilever, free standing, and mast type models. In 1986, YJM added a line of Work Station Cranes,

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

gantry crane operators load and discharge hundreds of containers in a systematic fashion. The crane operators rely on their line of vision and on signals or directions from employees on the ship and on the ground below to guide them in their Lifts. Risk of injuries can be reduced by the use of radio communication by the crane operators and longshore personnel. Hazards of Container Operations Container ships come in and out of ports on a regular basis. At each port, containers must

• Luffing Tower Crane

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 Maximum working range: 60 m Tip load: 2.9 T Working range: 15 to 60m Lifting capacity: 16-3.7 T Freestanding height: 42.1m Anchored high: 200m Derricking speed: 1 min 40S Slewing speed: 0-0.7r/min

• Mini crawler cranes

other cranes simply would not be suitable for. The cranes low headroom allows them to be used indoors or even underground. The powerful rubber tracked CX-8T with 360 degrees slew and 4 stage telescopic boom, Lifts 8 tonnes, yet occupies a footprint of only 3.48 x 3.48 metres. The compact size allows easy transport by air, water, rail and road. Advantages of mini crawler cranes Compact and Tough Suits all types

• Self-Raising Tower Crane

for the construction 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

• Popular Construction Equipments or Construction Machineries

used to compact dirt, asphalt, gravel, and concrete in roads and construction sites. Rotary Tiller: This equipment is a motorized cultivator with a rotating blade. It is mainly used to work in the soil. Crane: A crane is used for lowering and Lifting materials. They are mostly temporary tower structures equipped with pulleys and cables and used in construction sites. Drag line excavation systems: A popular heavy construction machine used in surface mining and civil engineering. The

• Crane Gantry

A crane, which is equipped with a derrick or tower, is used to lower and Lift materials with the use of pulleys and cable. Heavy equipment manufacturers and the construction industry use cranes in various activities connected with their process. Cranes used in the construction industry are mostly temporary structures either

• Industrial Cranes

yachts and cargo ships. There are many variations of this type. The deck cranes used in ports are typically bigger and have a longer arm span. The ranges of deck cranes may include cylinder and wire luffing cranes, gantries, grab cranes and heavy Lift Cranes. Big cargo ships would require heavy lifter cranes. Sometimes, cranes installed are dependent on the products a cargo ship carries. Yachts however would only need a smaller deck crane with shorter reach that can be sustained by the vehicle

• Stainless Steel Jib Cranes

of  Stainless Steel Jib Cranes Reduce contamination in processing environments Safely handle oversized loads in sanitary environments Reduce crane corrosion over surface finishing and metal treatment tanks Clean overhead Lifting equipment with the same compounds used on other wash-down processing equipment Service mixers, pumps and motors on-site with integrated jib cranes without other non-sanitary equipment

• Jib Cranes

mechanism whereby they can be rotated using a wheel and made to turn in an angle up to 360 degrees. All crane jibs do not possess arms that are capable of swinging – some are manufactured with fixed arms. In such cases, the lowering and Lifting of the loads are most often done with the help of a hoist which is either electrically or manually controlled. Jib cranes that are fixed to walls or floors generally have limitations on their range of operation and this makes the process

• 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 bend or fold the arm if required. Since it can be folded, articulating jib cranes are easy to maneuver in small areas with space restrictions. Mostly used in warehouses, large departmental stores

• Portable Jib Crane

etc. The military forces also use these machines to serve a variety of purposes. Some of them are called portable jib cranes simply because of the fact that they can be moved from one place to another with the assistance of a fork Lift. Although the amount of weight that they can carry is significantly less than that of a fixed or wall mounted one, portable jib cranes today are an important piece of machinery. By attaching a simple fork lift, any standard design of these

• Self Propelled Cranes

one operator position from which the crane is controlled and the vehicle driven. The road speed of this type of crane is generally low usually not exceeding 30km p/h. A variety of self propelled crane formats are available ranging from short height Lifting strut booms of fixed length to variable length lattice booms with a fly jib attachment. Typical specification main boom length 38,000 lifting capacities for a 24, 000 main boom length 1. stabilised on outriggers 31-4 tonnes at 4,000

• Lorry Mounted Cranes

cranes consist of a lattice or telescopic boom mounted on a specially adapted truck or lorry. They have two operating positions: the lorry being driven from a conventional front cob and the crane being controlled from a different location. The Lifting capacity of these cranes can be increased by using outrigger stabilising jacks and the approach distance to the face of building decreased by using a fly jib. Lorry mounted telescopic cranes require a firm surface from which to operate and because

• Crane Steel Structures Test Problems

amount set under the main beam in the reading, both the actual elastic deformation of the main beam, as well as bearing rail beams, wagon wheel assembly space, car assembly asked the gap, cart tracks and car track deformation, deformation of the Lifting rope and so on. Plant installed in the concrete structure for the crane, the elastic deformation of the main beam than the previous several other large and more space and orbital assembly deformation is negligible; but for steel plant in the crane,

• Crane Control program analysis and comparison

value, can be seen hoisting crane speed change is also continuous. With the SA from low gear to high gear switch. K5, K6, K7 state were combined into seven different input frequency, so that the output of seven different frequencies to obtain the Lifting speed of seven different stops, SA through the block back to zero, the inverter output frequency in the deceleration time continuous decrease. When the output frequency is equal to the frequency of cervical braking closed (6Hz) time. Mechanical

• Electric Hoist Failure Analysis and Treatment

of electrical or line repair or replacement, as confirmed Lord, trouble-free control loop, before re-testing; (3) the hoist motor terminal voltage is lower than 10% of rated voltage, the motor starting torque is too small, so do not moving cargo Lifting hoist, and can not work, check with a multimeter or voltage meter and other measuring motor input voltage is indeed due to low voltage, the motor can not be started, the need to return to normal after system voltage such as using electric hoist.

• 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, shall be replaced in order to comply B/T7688.15-1999 "Metallurgical

• General requirements of the safe operation of crane drivers

should be given intermittent tone. Fourth, during normal operation of the driver shall not carry out the following acts: (1) the use of parking privileges position limiter; (2) the use of anti-car to hit the brake; (3) examine the process of Lifting operations and maintenance; (4) adjustment with load hoisting, luffing mechanism of the brake, or increase the operating load range; (5) shall not be suspended from the head on top of things through, hanging objects, and may not stand on the

• 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 electric hoist Model: Lifting speed: single speed () m / min; double speed () m / min Car speed: single speed () m / min; double speed ()

• Crane Preventive Maintenance Checklist

- 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 sign Main Boom: Lift cylinder(s) telescoping cylinder(s) hydraulic hoses / tubing & fittings holding device boom sections alignment wear pads equal extension sheaves hoist line dead end wire rope retainer boom hinge pin boom head

• Question About Tower Crane - 1

locking nuts and pins? A. Daily B. Weekly C. Monthly When climbing a ladder what safety position should you hold? A. Centre rung of ladder B. Outside rail of 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

• Crawler Crane QUY50

[caption id="attachment_403" align="aligncenter" width="413" 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

• Mast Style Jib Crane

available in two series: 200 Series Mast Style Jib Cranes - Full Cantilever Lower cost alternative to foundation mounted free standing jibs No mounting foundation required Allows maximum use of headroom to provide the highest possible Lifting distance Standard capacities to 5 tons Standard height and spans to 20 feet Greater capacities, heights, and boom spans available upon request Motorized rotation available 201 Series Mast Style Jib Cranes - Drop Cantilever Identical

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

to crane attachments such as: Augers and drills Clamshell buckets Concrete buckets Hooks Personnel platforms What equipment isn’t covered? Equipment not covered includes: Machinery converted or adapted for non-hoisting/ Lifting use Power shovels, excavators, wheel loaders, backhoes, loader backhoes, and track loaders – even when used with chains, slings, or other rigging to lift suspended loads Digger derricks used for augering holes for poles carrying

• Crane Component

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 design.

• 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 ton or more of weight, or small enough to attach to a truck. While people will often rig homemade

• Wall Mounted Jib Cranes

strength is not a limiting factor. Wall bracket kits include all components except the I-beam, tie rod and mounting hardware, which if preferred, can be purchased locally. IMPORTANT NOTE: This equipment is not, in any way, designed for Lifting, supporting, or transporting humans. Failure to follow the specified load and mounting limitations can result in serious bodily injury and/or property damage. Jib cranes should not be supported from any existing building structure without

• Electric Overhead Travelling Crane (EOT Crane) Parts

2 No’s Wheel of the bridge– At least 4 No’s Crab (without auxiliary hoist)– 1 No’s Hoisting machinery set– 1 No’s Wheels of crab– At least 4 No’s Bottom Block (without auxiliary hoist)– 1 No’s Lifting hook– 1 No’s Rail on the gantry girder for crane movement– 2 No’s Rail on the bridge for crab movement– 2 No’s Operators cabin– 1 No’s

• Workstation Jib Cranes

duty applications. Capacities vary up to 11,000 lbs. and spans reach 16 feet. Circular coverage workstation jib cranes offer 200º or 360º of rotation. Workstation jibs offer easy, ergonomic movement for applications requiring repetitive Lifting and transferring of loads. An operator could be pushing a 1000 lb. load; however, the operator will experience the force of approximately 10 lbs. to begin moving the load and 8 lbs. to continue moving the load (100 to 1 ratio). Also,

• BossBuyer Gantry Cranes

Dependable and versatile, BossBuyer Gantry Cranes offer cost effective Lifting portability that can withstand the heaviest of loads. Easily assembled and disassembled, a BossBuyer Gantry Crane can be used indoors or outdoors, whether mounted or mobile. Gantries are successfully utilized across

• Articulating Jib Cranes

factor. All BossBuyer Articulating Jib Cranes are designed for moderate usage. Consult factory for usage other than moderate and all instances of high cycle rates or high impact applications such as high-speed air or electric hoists, vacuum Lifters, or magnets.

• Wall Traveling Jib Cranes

Primarily used for long lateral movement under an overhead crane, the BossBuyer Wall Traveling Jib Cranes provide Lift under a large overhead crane without interfering with the overhead crane.  This enables workers to continue lifting material without waiting for a larger overhead crane to become available. BossBuyer Wall Traveling Jib Crane end trucks use channel

• Bottom-Slewing Tower Cranes Structure and Configuration

crane configurations altogether, the jib of the common bottom-stewing crane can usually be raised, though not in a sharp angle (commonly up to 300), while maintaining trolley movement. This grants the initially height- limited crane an additional Lifting height. Some models have an articulated jib, in which the part closer to the mast is horizontal and the outer part can be angled upward.

• Gin Pole Derrick

Agirrlwle is the most elemental form of derrick-it could be described as primitive--essentially a leaning mast incapable of swinging and held in place by guys. With no boom, Lifting is done from a load fall at the tip of the mast. Large and small gin poles find roles quite distinct from one another. In the middle range alternative lifting devices are more practical, and so middle-sized poles are a rarity. Long heavy-duty

• Classification of Crane Anti-sway devices

measuring the actual swaying, by means of an estimator embedded in a drive controller or any external logic controller. The principle is that the anti-sway controller calculates an acceleration (a progressive speed profile) that enables the Lifting equipment to reach a given movement speed without the load swaying. Since there is no way to determine the actual state of the physical system, proper operation requires a zero initial swaying and insignificant external disruptions, such as

• Principle of the Crane Anti-Sway device

actions of an experienced operator, returning to a stable state of equilibrium may take several seconds. The swaying of the load only appears during the linear motion of the gantry crane (x movement) or when the trolley moves (y movement). Lifting the load following the z axis does not generate any swaying. The Anti-Sway principle is based on using a load position estimator and determines the difference between the perpendicular and the trolley. It will be noted that in this equation

• 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

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