What Is a Hoist Frame?

Crane is a kind of lifting and handling machinery widely used in ports, workshops, electricity, construction sites and other places. The name of the crane is the unified title of lifting machinery. Cranes are usually called cranes, crawler cranes and tire cranes. The usefulness of a crane is to lift equipment, rescue, lifting, machinery, rescue.

Crane diào ch

The crane is

The crane mainly includes a lifting mechanism, a running mechanism, a luffing mechanism, a slewing mechanism and a metal structure. The lifting mechanism is the basic working mechanism of the crane. Most of them are composed of a suspension system and a winch. There are also lifting and lowering weights through a hydraulic system. The operating mechanism is used to move heavy objects vertically or adjust the working position of the crane.

It is widely used for lifting and handling machinery in ports, workshops, construction sites and other places. The usefulness of cranes is related to lifting equipment, rescue, lifting, machinery, rescue

Type of crane: A. Movable:

definition

The main performance parameters of the crane: The main parameters of the crane are the parameters that characterize the main technical performance indicators of the crane. They are the basis for the design of the crane and also the important basis for the safety technical requirements of the heavy machinery.

Necessity of crane maintenance

Good maintenance and maintenance are not only directly related to the safety of crane machinery use, but also determine whether the crane machinery and equipment can maintain subsequent vitality and extend service life, thereby creating more economic benefits. During the long-term use of the crane, some parts and connections will inevitably appear loose, corroded, aged, and damaged due to factors such as vibration and friction. In order to prolong the service life of the crane, reduce the rate of equipment failure, reduce and eliminate hidden safety hazards, it is necessary and important to regularly perform equipment maintenance on the crane. Only by regularly inspecting, maintaining and maintaining the crane, lubricating the parts that need to be lubricated, firming the parts that need to be tightened, and repairing and replacing the vulnerable parts, can the hidden trouble of equipment failure be reduced in time and the accident reduced. Incidence makes cranes run more safely to create better economic benefits.

As a crane unit, in addition to requiring operators to strictly observe the phase

Lifting and hoisting "ten not to lift" regulations:
1. Anyone staying or walking under the boom and lifted weight is not allowed to lift.
2. The hoisting command should be performed by a qualified professional with technical training, and no hoisting is allowed without command or unclear signals.

(1) Lifting indicator (angle plate, also called weight limiter)
The angle indicator installed at the root of the boom near the driving position changes with the elevation of the boom, reflects the included angle of the boom to the ground, and knows the elevation angle of the different positions of the boom. According to the crane performance table and performance curve, We can know the reference values such as the amplitude value, lifting weight and lifting height at a certain elevation angle.
(2) Over hoisting limiter (also called ultra-high limiter)
A safety device installed on the pulley block at the end of the boom to limit the lifting height of the hook head to prevent overhanging accidents. It guarantees that when the hook is lifted to the extreme position, it can automatically send an alarm signal or cut off the power source to stop lifting to prevent over-rolling.
(3) Torque limiter The torque limiter is a safety device that automatically cuts off the lifting or luffing power source when the load torque reaches the rated lifting torque, and issues a prohibitive alarm signal. .
(4) Anti-arm back device and anti-back bar support Anti-arm back device and anti-back bar support are safety devices that can no longer lift when the boom is raised to the maximum rated elevation angle. If it is too large, it will cause backward tilt. ^[4]