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Truck Crane Hydraulic System

Hydraulic winch with bent Axis piston motor and planetary reduction gearing provides two speed operation with equal speeds for power up and down. Winch is equipped with an integral automatic brake, grooved drum, tapered flanges, standard Cable roller on drum, and electronic drum rotation indicator. AUXILIARY WINCH Hydraulic two-speed winch with bent axis piston motor, equal speed power up and down, planetary reduction with integral automatic brake, grooved drum with tapered

Testing and Examination of Cranes and Certain Lifting Appliances

A satisfactory knowledge of the inspections or tests or examinations that they are carrying out The ability to draw up certificates and reports required on the work that they are carrying out A thorough knowledge of the appliCable specifications, statutory Regulations and Codes of Practice The necessary experience to interpret and evaluate the results of their work b) generally, not be an employee of the person who owns or uses the crane or lifting appliance.

Stability of Cranes and Lifting Appliances

the crane. Each removable weight must be marked with its self-weight. Cranes must not be used in weather conditions likely to affect their stability. A competent person must examine the anchorage and ballast arrangements as soon as practiCable after a crane has been subjected to such weather conditions. A crane is not to be used again until all necessary steps have been taken to ensure its stability. All mobile cranes must be fitted with level indicators. The indicators

Tower crane lifting boom

steel plate for load transfer. Fixed jib can be operated within the range of boom length 13^-43m, and lifting operation length is 9-18m, with two offset angle of 100 and 300. Fixed 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

Safe Crane Operations

on lagged (grooved) drums and three wraps on unlaggedWhen lifting near or at capacity, test the brakes after the load is raised a few inchesSuspend and transport loads at a level that allows the operator a clear viewNever drag slings, Cables or chains across the floor

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

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 of movement and where practiCable controls should be so arranged that inadvertent operation can be prevented. Cranes with Derricking Jibs Cranes, fitted with derricking jibs, which are driven through a clutch from the same source of power which drives the hoisting mechanism,

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

to cranes and lifting appliances prior to the loads being raised, lowered or suspended. Where dock workers need to board vessels to carry out lifting operations, the following specific requirements apply Where it is reasonably practiCable to do so, suitable and sufficient gangways or ships accommodation ladders must be provided If it is not reasonably practicable to provide these means, then one or more ladders of adequate strength must be provided Whatever is provided

The Manufacturing Process Of Crane

pressure. Hollow 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

FACTORS BEHIND THE SELECTION OF CONSTRUCTION EQUIPMENTS

technical aspects of crane location and lift planning. In the following paragraphs, we discuss some of the factors that govern the equipment-selection decision. It may be difficult to come up with a set of decision variables that are appliCable for the selection of all types of equipments used in construction, and hence, only a few common decision variables are discussed. The specific decision variables for a particular class of equipment selection are discussed subsequently.

Tower-mounted crane

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 markets for these as well; Cable stay and suspension bridges, offshore oil platforms, and power plants are some examples. In most of the world outside U.S., small tower cranes are used for modest-size residential and commercial projects. Many of these rigs are self-erecting

Mobile Crane Clearance In Tight Quarters

ment is to be stowed during nonworking hours or the crane is to be secured in advance of a storm. Interference is sometimes caused by a secondary element that might easily be missed unless the planner takes a second look. A cab, slack Cable, or transition piece might easily be overlooked. The clearance dimensions of projecting or overhanging components are usually given in general dimension diagrams provided with the crane documentation.

CABLE CRANES

Cable CraneS The taut-linc cableway crane consists of two towers suspended between which a track cable of the locked construction is serving as a bridge structure. A carriage with a handling attachment travels on the track cable with the aid

Crane & Hoist Safety Responsibilities

providing copies of all inspections and test results to facility managers and building coordinators who have cranes and hoists on file. Inspecting and load testing cranes and hoists following modification or extensive repairs (e.g., a replaced Cable or hook, or structural modification.) Scheduling a non-destructive test and inspection for crane and hoist hooks at the time of the periodic load test, and testing and inspecting before use new replacement hooks and other hooks suspected of

Tower Crane

align="alignleft" width="360" caption="tower crane"][/caption] Tower 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:

Self-Raising Tower Crane

mechanism system:1 · Power line voltage: 380V/50Hz · Color: yellow · Counter weight: (without concrete) · Mast section: 2x 2x 2.8m · Cabin: included · Telescoping cage: included · Pump and cylinder: included · Main Cable: included · Basic mast: included

Popular Construction Equipments or Construction Machineries

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 smaller size is used for port and road construction. The larger ones are used in strip-mining

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 mounted on a vehicle which is built for the

Industrial Cranes

other jobs. Indeed, cranes are the ultimate equipments need to facilitate their work and to lessen the time they spend in doing certain tasks. There are many types of cranes and each differs according to its use. Cranes are powered by metal Cables, hydraulics system, diesel fuel, etc. These machines can be manipulated remotely using infrared or by photoelectric capability. Cranes that are mechanically operated uses a lever to lift, pivot and to lower the machine. One of the types of cranes

Customer Order cranes should know a few basic parameters

hoist Model: Lifting speed: single speed () m / min; double speed () m / min Car speed: single speed () m / min; double speed () m / min Cart speed: single speed () m / min; double speed () m / min Operation control: () cab operation; () Cable ground operations; () wireless remote control Cart speed control mode: () linkage Taiwan; () cam speed; () Cab Type: () open; () closed Cab door Location: Right side of the door (); left open (); after the right door (); left open the door after

Question About Tower Crane - 1

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 more than three times C. The main electrical Cable snapping Limit switches are fitted to all cranes what is the minimum standard of the switches? A. IP60 B. IP65 C. IP67 How often should limit switches be checked? A. Weekly B. Monthly C. Six monthly How often should you limit switch

Classification of Crane Anti-sway devices

Crane anti-sway systems come under three main categories: passive systems: Cables attached to the load prevent it from swaying, active closed loop systems where the swaying angle is measured with a camera connected to an image processing system, active open loop systems where the information is obtained without additional

Principle of the Crane Anti-Sway device

translation speed of the two horizontal axes, i.e. the speed of the gantry crane (dx/dt) and that of the trolley (dy/dt), the acceleration and deceleration speeds of these same axes (d²x/dt² and d²y/dt²), the length of the Cable, the position of the centre of gravity. The position of the centre of gravity is a variable figure that depends on the geometry of the load that the operator has to fill in. The swaying of the load is controlled by variable speed drive that

YJCrane Gantry Crane

and structural soundness of your current lifting capabilities. Bottom beam mounted winches provide visibility and safety for operators. By having the winches mounted below our operators cab, the operator can visually see the winding of the Cable and maintenance can be performed without having to climb a ladder or rent a manbasket. YJCrane Models and Specifications The ISL Models are the â€œwork horsesâ€ of our line. The ISL is designed for higher duty cycles and to work all