Is the working principle of a small crane the same as that of a human limb?

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.

The working principle of the crane is mainly manifested in the fact that there is a rotating drum below the boom, and the wire rope is wound on it, and the wire rope pulls out the previous boom through the pulley on the top of the next section of the arm, and so on. When retracted, the drum is reversed, and the crane arm is retracted under its own weight.

In addition, there are some truck cranes with a telescopic boom equipped with a kitted plunger cylinder, but this application is very rare. Because the multi-stage piston cylinder is expensive, and the boom will be elastically bent when loaded, it has a great impact on the life of the cylinder.

Multi-action lifting machinery that lifts vertically and carries heavy loads horizontally within a certain range. Also known as a crane. It belongs to material handling machinery. The working characteristics of the crane are intermittent movements, that is, the corresponding mechanisms for reclaiming, moving, unloading and other actions in a working cycle work alternately.

Regarding the working principle of the crane, take the engineering hoisting crane as an example: the base support part includes the bearing structure such as the chassis and the frame leg that can be driven on the road, and the chassis also provides power for the onboarding operation through the center rotary body. The power of the engine is transmitted to the multi-pump group through the PTO output port of the gearbox, and the mechanical energy is converted into hydraulic energy, and then the hydraulic energy is transmitted to each cylinder and each motor through the multi-way distribution valve, and the hydraulic energy is converted into mechanical energy to realize the linear and rotary actions of the executive parts, so as to realize the actions of rotation, lifting, telescopic, luffing and so on.

Or directly use the motor to drive the slewing, luffing, lifting reducer to realize the rotation, luffing and lifting of the operating device.

Crane is the common name of crane, crane is a kind of lifting machinery, multi-action lifting machinery that lifts vertically and horizontally carries heavy objects within a certain range, and belongs to material handling machinery. It is a kind of machinery that does cyclic and intermittent movement. A duty cycle consists of:

The pick-up device lifts the item from the pick-up place, then moves horizontally to the designated place to lower the item, and then performs a reverse motion to return the pick-up device to its original position for the next cycle. Such as fixed slewing cranes, tower cranes, truck cranes, tires, crawler cranes, etc.

The crane mainly includes a lifting mechanism, a running mechanism and a metal structure. The hoisting mechanism is the basic working mechanism of the crane, and they are mostly composed of a hanging system and a winch, and there are also heavy objects that are lifted and lowered by the hydraulic system. The running mechanism is used to move heavy objects horizontally or adjust the working position of the crane, which is generally composed of an electric motor, a reducer, a brake and a wheel.

The crossbar of the tower crane is also the crane arm is fixed in the large sleeve with turntable, and the base of the tower crane (vertical, including the attached wall rod), is equivalent to a small sleeve, and the large sleeve slides up in the small sleeve, with the increase of the construction height, and the connector of the small sleeve is increased, and then the large sleeve slides up to the construction height. The process of dismantling is similar to this, the large sleeve slides down one section, the small sleeve dismantles one section, and the boom of the large sleeve lowers it.

Supplement: the large sleeve (transverse) has a large turntable at the junction with the small sleeve (vertical), which is equivalent to the operation room, and the connecting piece of the small sleeve is lifted to the position of the operation room through the transverse overweight arm for connection, and the large sleeve climbs up once for each completed sleeve.

The hydraulic equipment of the crane is based on the hydraulic oil as the working medium, through the power element (oil pump) to change the mechanical energy of the prime mover into the pressure energy of the hydraulic oil, and then through the control element, and then with the help of the actuator (cylinder or oil motor) to convert the pressure energy into mechanical energy, drive the load to achieve linear or rotary movement, and through the remote control control of the control element and the adjustment of the flow rate, adjust the force and speed of the actuator.

What is the telescopic principle of the crane telescopic boom? After watching the 3D animation demonstration, it turned out to be so complicated.

It works on the principle of levers and pulley sets.

The control rooms are of course all at the top.

There was a staircase on the high shelf below him, and people climbed up it.

As for the operation, of course, there is an operating station in the control room.

I'm afraid or not to be afraid depends on who goes up, I'm definitely afraid! Hehe.

What is the telescopic principle of the crane telescopic boom? After watching the 3D animation demonstration, it turned out to be so complicated.

Because the use of a lever can save effort, the crane is a lever, so it is the lever principle.

What is the principle of the telescopic boom of a large crane? The process of 3D animation is far more complicated than imagined.

What is the telescopic principle of the crane telescopic boom? After watching the 3D animation demonstration, it turned out to be so complicated.

What is the principle of the telescopic boom of a large crane? The process of 3D animation is far more complicated than imagined.

The working principle of the small crane is that the power drives the high-pressure gear pump to produce high-pressure oil, enters the safety valve through the oil pipe, enters the disembarkation operation valve, operates the disembarkation valve to complete the disembarkation operation, and then the high-pressure oil is supplied to the on-board valve by the off-board valve, and the on-board valve is operated to complete the actions of luffing, telescopic arm, landing hook and rotation. **Reach.