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Floating crane

building and port construction, but they are also used for occasional loading and unloading of especially heavy or awkward loads on and off ships. Some floating cranes are mounted on a pontoon, others are specialized crane barges with a lifting capaCity exceeding 10,000 short tons (8,929 long tons; 9,072 t) and have been used to transport entire bridge sections. Floating cranes have also been used to salvage sunken ships.

Rough terrain crane

Rough terrain Crane is a crane mounted on an undercarriage with four rubber tires that is designed for pick-and-carry operations and for off-road and "rough terrain" applications. Outriggers are used to level and stabilize the crane for hoisting. These telescopic

Crawler Crane

A crawler crane is a crane mounted on an undercarriage with a set of tracks (also called crawlers) that provide stability and mobility. Crawler cranes range in lifting capaCity from about 40 to 3,500 short tons (35.7 to 3,125.0 long tons; 36.3 to 3,175.1 t). Crawler cranes have better manoeuvrability and can be quickly relocated at different locations on a project site. However, for shifting to another project site, these

Tower crane

Tower crane is a modern form of balance crane that consist of the same basic parts. Fixed to the ground on a concrete slab, tower cranes often give the best combination of height and lifting capaCity and are used in the construction of tall buildings. The base is then attached to the mast which gives the crane its height. Further the mast is attached to the slewing unit that allows the crane to rotate. On top of the slewing unit there are three

Cranes

Development depends on infrastructure and infrastructure on heavy machineries. Of all the heavy machines Cranes acquire an important position as they are involved in the building and maintenance of huge projects. Crane machines are the huge tower like machineries having ropes meant to lift or to lower any heavy devices. Hence they are also referred

Bridge Crane

Bridge Crane is a heavy machinery that is designed to build or fix a bridge. It operates on two tracks and has four way horizontal movement. Bridge cranes cover rectangular area and can be floor supported or hung from the ceiling. The main components of

Floating Crane

A floating Crane refers to a type of sea vessel which has a crane mounted on it. In earlier days, floating crane designs were nothing more than old ships transformed to include a huge crane mounted over the deck. Eventually, cataraman, semi-submersible designs

FAQ About City Crane

  • Truck cane standard upperstructure equipment

    • 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 INDICATOR Rated Capacity Indicator with visual and audible warning system and automatic function disconnects. Pictographic display includes: boom radius, boom angle, boom length, allowable load, actual load, and percentage of allowable

  • Truck Crane Standard Carrier Equipment

    • 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 lb (21 772 kg)

  • Truck Crane Hydraulic System

    • TRUCK CRANE HYDRAULIC SYSTEM HYDRAULIC PUMPS A double 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

  • Testing and Examination of Cranes and Certain Lifting Appliances

    • 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 specification and can be safely operated at its rated capaCity. The test usually involves the application of an overload, i.e. a load greater than the rated safe working load of the crane under the range of the normal duties of the crane. Tests can also include the use of non-destructive test facilities,

  • Travelling Cranes

    • and the rail tracks must be provided with stops or buffers at each extremity to prevent de-railment of the crane. The requirement for electrically earthing the rail tracks, originally contained under Regulation 7, were superseded by the ElectriCity at Work (Jersey) Regulations, 1983. In order to meet the requirements of these regulations, the rail tracks must also be "earthed" electrically so as to ensure that if an electric fault occurs, any dangerous electrical charge which may develop can

  • Tower Crane Carrier

    • together with turntable and car-body. Car-body Car-body is made of high strength steel, H-shaped structure, with cross panel installed in the middle to strengthen its stiffness of torsion resistance, simple structure, high loading capaCity and well rigidity. Crawler Track Crawler track consists of track beam, drive sprocket, idler wheel, upper roller, lower roller and track. Crawler beam is box-shape structure, the connection place to frame is strengthened partially, and

  • Tower crane lifting boom

    • 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 equipment: 70t capaCity hook block, 30t capacity hook block, 8t capacity hook block.

  • YGMT Crane types

    • views of development, and to promote the product brand and enterprise image. With the 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

  • Safe Crane Operations

    • and understand the operators manualFollow all placards, warning labels and signs on machineKnow the SWL of the crane and never exceed itDetermine the weight of the load from accurate sourcesIf an estimate of the load is near the max. capaCity of the crane, then use a dynamometer to measure the exact weightUse a loud signal, such as a whistle, horn or bell or verbal warning to alert employees of crane movementNever hoist a load over the heads of employeesNever use limit switches

  • Cranes, lifting appliances and fork lift trucks

    • of working on road lighting equipment etc., where the persons are standing in a working platform constructed on the end of an articulated hydraulic jib, would not be regarded as a crane within the meaning of this Regulation. Small capaCity hand operated hydraulic machines used for example to remove engines from vehicles, are considered as cranes, however, they are exempted from certain requirements of the Regulations, see page 34. "Lifting appliance" means:- "An excavator,

  • 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 cranes is a potentially dangerous operation and requires very careful planning. An accurate calculation must also be made to determine the share of the load which is to be taken by each crane.

  • 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 machines where the operator can sustain the load. Each control on the crane or lifting appliance should be clearly identified to show the amount and direction

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

    • safe load indicator are being tested as required by Regulation 11, see page 16.The requirements of this Regulation do not apply to the following lifting appliancesExcavatorsMechanical GrabsGrabs and excavator bucket sizes are determined by the capaCity of the machine. This naturally limits the load which these machines can carry. The possibility of overturning is not as easily achieved as that on conventional cranes, when the machine is being used as an excavator.

  • WALKING CRANE FOR OPERATION BY POWER OR HAND

    • 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 the crane longitudinally upon its track. Cranes of this type are built of any desired capaCity from r to io tons, and for operation either by hand or by power. The base consists of two wrought iron girders united by riveting and carrying between them the truck wheels which support the crane. Rising from the center of the base is a cast iron

  • Column Crane

    • of essentially the same construction as that described on page 115, but arranged to revolve around a fixed center column within the mast, the column being utilized for supporting the floor above. This type of crane is built of any desired capaCity from r ton to io tons, although for capacities above 5 tons it is best if possible to arrange the cranes independently of the supporting columns.The mast consists of two wrought iron channel beams, securely fitted to heavy castings at top and bottom,

  • Overhead Crane and Bridge Crane

    • beam construction. These are made out of more complex girders ornormal steel. The single bridge box girder crane is complete together with the system and the hoist and is operated making use ofa control pendant. If the application needs heavier capaCity systems 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

  • Cranes and hoists operating rules

    • by blocks, jacks, or a solid footing that will safely support the entire weight. Have a crane or hoist operator remain at the controls or lock open and tag the main electrical disconnect switch. Ensure that the rated load capaCity of a crane's bridge, individual hoist, or any sling or fitting is not exceeded. Know the weight of the object being lifted or use a dynamometer or load cell to determine the weight. Check that all controls are in the OFF position

  • PORTABLE TRUCK-MOUNTED CRANE BOOMS

    • range. The knuckleboom weighs more than a ton. Its load capacities range from a maximum of about 8000 lb with a 5- to 10-ft boom to one-third as much with a boom about three times as long. The largest units made have somewhat greater range and capaCity, approaching a 10-ton limit. The high-lift telescoping boom is generally attached to a truck bed next to the cab to distribute the load to all axles of the truck for the best stability. With the boom fully extended it can reach more than 80 ft

  • Jacking Towers

    • and on the center-hole jacks when in motion. Strand-jack system advantages are Precise vertical load control and the ability to correct for lateral out of plumbness by operating onejack Control and monitoring from the ground High load capaCity utilizing simple towers that can break down into small sections Moderately fast operation, with typical loads being able to be lifted within a normal work day Adjustable guys that can readily correct alignment and out of plumbness to within tolerance

  • Hydraulic Telescoping Gantries

    • beams or on steel plates over concrete. The original and most common type of telescopic gantry utilizes large diameter multistage lift cylinders with as many as five stages and fully extended height of as much as 45 ft (13.7 m). The capaCity for a pair of units can be 1000 tons (900 t) or more, but the capacity reduces with cylinder extension. The stages sequentially extend with the smallest diameter, and hence the weakest stage at the top. The lifting ability, structural strength,

  • All-Terrain Carriers

    • majority of mobile-crane sales throughout the world. The carriers used on these telescoping cantilevered-boom machines combine the high road speeds of truck carriers with some of the off-road capabilities of the rough-terrain crane. Large-capaCity multiaxle models have appeared featuring the characteristics necessary to carry the all-terrain label: high road speed, off-road maneuverability, and drive positions in both the chassis-mounted cab and in the operator's cab mounted on the rotating

  • Tower-mounted crane

    • can operate in winds up to 45 mi/h (70 km/h), which is far above mobile-crane wind limits. Lift capability of tower cranes is gauged by a moment rating expressed as tonne-meters. The tonne-meter rating is obtained 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

  • Mobile Crane Clearances

    • be only the first problem in a series, as some accidents come about because field crews try to improvise and work around an unexpected limitation. There are numerous ways that a crane might come up short. Shortness of reach or lifting capaCity is an obvious example. This is best averted by diligent review of loads, radii, and crane capabilities. But there are less obvious shortcomings just as debilitating to an operation as the straightforward ones that might be ferreted out only

  • Mobile Crane Ground Support Capacity

    • Presumptive soil-bearing capacities used for building foundation design are often conservative when applied to crane supports. Buildings present long-term loads to the ground, so that allowable soil capaCity must reflect a degree of long-term settlement control not necessary for crane use. Unless the crane is to remain installed for weeks or months, the initial settlement on first bringing the crane into place will be the only settlement of

  • 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

  • Crane Classification

    • 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 lightest crane as far

  • Crane Certification

    • certifying entity is "certifying" that the crane has been inspected and is in good condition; or "certifying" that the crane has been satisfactorily load tested; or "certifying" that the crane has been analyzed and modified for an increase in capaCity. To get ridiculous, we could certify that the crane is yellow in color. When it comes to "certification" of cranes used in construction or general industry, remember this: It carries no governmental stamp of approval. It satisfies no federal regulations,

  • 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

  • CABLE CRANES

    • of Cable Crane 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

  • MOBILE CRANES INTRODUCTION

    • 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, on the length

  • Crane Rigging a Load and Crane Overloading

    • 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, overloaded cranes shall be inspected, repaired, load tested, and approved

  • Material Handling Solutions

    • injuries and increase productivity. 6. Versatility YJM makes a complete line of crane systems to meet your individual needs. 7. Safety All cranes are pre-engineered for powered hoist operation-with a factor of 15% of the jib capaCity for the combined weight of the hoist and trolley and an additional factor of 25% of the jib capacity for the impact of powered hoists. 8. If It's Late, We Pay the Freight When delivery is critical, you can depend on YJM. Upon request, we will

  • 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 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

  • Self-Raising Tower Crane

    • Version: fixed or traveling type ·  Free height: from 60meters ·  Max. height: 200meters ·  Max. radius: 70meters ·  Jib end load: 3MT at70 meters ·  Max. load: 12MT at 22meters ·  Hoisting mechanism system: 1 ·  Drum capaCity: 400meters ·  Slewing mechanism system: 1 ·  Slewing speed: 0.6r/min ·  Trolley mechanism system:1 ·  Power line voltage: 380V/50Hz ·  Color: yellow ·  Counter weight: (without concrete) ·  Mast section: 2x 2x 2.8m ·  Cabin:

  • Single Girder Overhead Traveling Cranes

    • width="241" caption="Single Girder Overhead Traveling Cranes"][/caption] Some of the features of our Single Girder Overhead Traveling Cranes are Modern design Safe operation as per IS 807 / 3177 and Hoist IS 3938 CapaCity - 0.5 ton to 20 ton Span - 3Mtrs to 35Mtrs and above Hoist - Ace wire rope Hoist with Motorized Trolley Speed - Single speed or dual speed for Hoisting, Cross travel and long Travel with variable Speeds. If you are interested

  • Crane Gantry

    • crane. Mobile cranes are the most basic and common type of crane, which as the name implies, can be carried easily to any place. Tower cranes are fixed to the ground. These are mostly used in buildings for the best combination of lifting capaCity and height. A telescopic crane is capable of lifting lower capacity but can reach greater heights. To provide greater mobility, a crane will be mounted on a carrier truck and is known as a truck-mounted crane. Whereas the rough terrain cranes,

  • Industrial Cranes

    • you intend to buy is not compromised, although it is second hand, here are some tips on how to buy used deck cranes for your yacht: Take note of the performance. Make sure that the crane is not yet hard to manipulate. Consider the lifting capaCity and the speed of the lifting. Used cranes are expected to have lower performance but with proper care, the utmost performance can be restored. Consider the span of the arm of the crane. Make sure that as you install it in your yacht and made use

  • 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 - as per IS  3938 Crab Type Hoist with Motorized Trolley Speed - Single Speed & Dual Speed for Hoisting, Cross Travel, and Long Travel. Variable speed achieved

  • 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"

  • Gantry Crane or Goliath Crane

    • 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 to 30 Meters Over Hang if required If you are interested in our Gantry Cranes or Goliath Cranes, please email to us : sales@bossbuyer.com.

  • C Hooks

    • align="alignright" width="180" caption="C-hook"][/caption] We are manufacturing "C" Hooks to handle steel coils & other products. These can be fitted in our cranes as per the client’s needs. These are available in the capaCity of 1 Ton to 30 Ton. These can be customized as per the clients needs. If you are interested in our C Hooks, please email to us : sales@bossbuyer.com.

  • Lorry Mounted 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 of their

  • Metallurgical cranes on the technical requirements for special work

    • The original crane below the level of A6 (not including the A6), and should reduce the load used, decrease the work should be based on the actual circumstances, but after shedding the weight from the provisions of the original rated capaCity shall not exceed 80%. (B) has been used for more than the rated lifting capacity 10t of the electric hoist as the lifting mechanism of the various types of lifting appliances, lifting molten metal is not allowed. (C) has been used for the rated

  • Crane Preventive Maintenance Checklist

    • boom, extension alignment cords lattices end connections storage device sheave(s) wire rope retainer structure Jib: positive stops sheave(s) wire rope retainer(s) structure Main Load Block & Hook: capaCity marking weight marking sheaves safety latches 10° hook twist 15% hook throat opening 10% hook wear swivel bearing wedge socket / end fitting reeving NDT results Overhaul Ball & Hook: capacity marking weight

  • Bridge and gantry cranes

    • the braking systems • the ‘crane operating area’ • the electrical supply and its isolation points • the provision of access for service and maintenance/repairs, and • the load limiting devices, which prevent the rated capaCity being exceeded.

  • 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

  • Crane Component

    • 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. Customers

  • Rotary and Rectilinear Cranes

    • power, viz.: Hand. - When operated by manual power. Power. - When driven by power derived from line shafting. Steam, Eledric, Hydraulic. or Pneumatic. - When driven by an engine or motor attached to the crane, and orated by steam, electriCity, water, or air transmitted to the crane from a xed source of supply. Locomotive. - When the crane is provided with its own boiler or other generator of power, and is self-propelling; usually being capable of both rotary and rectilinear motions. Rotary

  • Workstation Jib Cranes

    • require a 6" reinforced concrete floor.  Optional portable bases are available to make your workstation cranes portable.  For even lighter capacities, try the affordable Tie Rod Workstation Jib Crane with 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

  • Gin Pole Derrick

    • a tailing crane lifts the vessel bottom and leads it in toward the poles. Tailing cranes are discussed in detail in Chap. 5. A small gin pole fitted with a topping lift and side guys can luff in and out. A pole of 30 ft (9 m) or so with capaCity of about 5 tons (4.5 t) is often used for raising loads to the roof of an existing building or for erecting a larger derrick. Though simple in form, a lufTing pole requires a skilled rigger to operate it safely as it can easily become unstable. As

  • Rule about marking rated capacity of crane

    • (1) 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

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