The upper arm of a person is similar to the working principle of a non crane, right or wrong

That's right, it's all leverage.

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The working principle of a small crane is the same as that of a human limb. Here's how it works:

Drive device: The drive device is the power equipment used to drive the working mechanism. Common drive devices are electric drive, internal combustion engine drive, and human drive.

Electric energy is a clean and economical energy source, electric drive is the main driving type of modern small cranes, and almost all rail small cranes, lifts, elevators, etc. that operate within a limited range are electrically driven. For mobile cranes that can move over long distances (such as car cranes, tire cranes and crawler cranes), internal combustion engines are mostly used. Human drive is suitable for some light and small lifting equipment, and is also used as an auxiliary drive, backup drive and temporary power for some equipment in an accident (or accident state).

The self-weight and lifting weight of the heavy machine.

Working mechanism: The working mechanism includes: lifting mechanism, running mechanism, luffing mechanism and rotating mechanism, which are known as the four major mechanisms of small cranes.

1) The hoisting mechanism is used to realize the vertical lifting of materials, and is an indispensable part of any small crane, so it is the most important and basic mechanism of the small crane.

2) The running mechanism is the mechanism that realizes the horizontal handling of materials through the operation of a small crane or a lifting trolley, and there are trackless operation and rail operation, which are divided into self-propelled and traction according to their different driving modes.

3) The luffing mechanism is a unique working mechanism of the boom small crane. The luffing mechanism changes the working amplitude by changing the length and elevation angle of the boom.

4) The rotating mechanism is to make the boom move around the vertical axis of the small crane to move materials in the annular space.

The small crane achieves the purpose of handling materials through the single movement of a certain mechanism or the combined movement of multiple mechanisms.

Control the manipulation system.

Through the electrical and hydraulic system control and control of the movement of the various mechanisms of the small crane and the whole machine, various lifting operations are carried out. The control and control system includes various manipulators, displays and related components and lines, which is the interface of man-machine dialogue. The requirements of safety ergonomics are concentrated here.

The status of the system is directly related to the quality, efficiency and safety of lifting operations.

Some of them are more ergonomic, but after all, they are machines, and the mechanics are indispensable.

The movement of the arm of the small crane is related to the two ropes that pull it. Relax the upper tow rope and tighten the lower tow rope while the boom moves downward. When the lower tow rope is released and the upper tow rope is tightened, the boom moves upward.

The movement of animals is controlled by muscles.

For example, the forearm movement of the human body is pulled by a group of muscles, when the biceps contraction and the triceps relax, the biceps brachii pulls the forearm adduction.

When the triceps contract and the biceps relaxes, the triceps pulls the forearm bone outward.

The muscles of the upper arm move through the innervation of the nerves in the brain.

Arm Slimming Method:

Stand upright with your feet open and pelvic width apart, hold a water bottle in each hand, palms facing outward, and look ahead in a ready position.

Take a deep breath, hold the water bottle with both hands and slowly bend it upward. This action is repeated 20 times.

The original of this small crane is the original lever, and it has little to do with people, if you have to say which part of the equivalent of a person, I think it is more appropriate to the arm. The arms, like the big arms, can be retracted and can be lifted and lowered.

There must be responsibility for this, the commander, the construction party, the operator, and the victim.