Structure and working principle of Crane truck
Time:2019-11-13
Views:1475
Truck-mounted cranes, also known as crane trucks, can be divided into 2 tons, 3.2 tons, 6.3 tons, 8 tons, 10 tons, 12 tons, 16 tons, 20 tons, etc. according to the tonnage. According to the chassis brand, it can be divided into ISUZU. , JAC, Shacman , FAW, Dongfeng, SINOTRUK, etc., according to the crane brand can be divided into XCMG, Changxing, UNIC, Sany, new Feigong and so on.
What is the structure and principle of the truck crane?
1. The boom and the crane boom have rectangular, hexagonal and octagonal structures. Nowadays, hexagonal and octagonal shapes are used. The main function is to support the load and change the working radius of the crane. It consists of a basic arm, various stages of telescopic arms, telescopic cylinders, etc. The boom movements of the truck cranes are generally carried out in a certain order. When extending, the two arms are extended first, and then the three arms and the top arm are extended. The order of retraction is reversed, and the sequential actions are controlled by sequential valves.
2. Hoisting mechanism: The hoisting mechanism is mainly composed of a hoisting motor, a reduction gear box and a reel. It is mounted on the column, and the ram drive motor drives the reduction gear box to drive the reel to rotate, thereby achieving lifting and lowering of heavy objects. Feel free to stop.
3. Variable-width cylinder: The variable-width cylinder is mainly composed of a cylinder block, a piston rod, a cylinder head and a seal. The principle is to use the flow of liquid to complete the expansion and contraction of the cylinder, and its function is to adjust the undulation angle of the boom.
4. Swing mechanism: The slewing mechanism consists of a rotary reduction gearbox and a hydraulic motor. The principle is to use the hydraulic power of the truck crane to drive the hydraulic motor to rotate, and drive the worm of the rotary reduction gearbox to rotate. The function of the slewing mechanism is to drive the upper column and the jib of the crane. Center rotation.
5. Leg structure: The legs are divided into forelegs and rear legs. The front leg mechanism consists of a leg frame, a leg frame telescopic cylinder and a leg cylinder. The rear leg mechanism consists of a bracket and a leg cylinder. The liquid flow is used to complete the expansion and contraction of the cylinder, and the function is to stabilize and support the operation of the cylinder during operation, thereby reducing the load on the chassis beam.
What is the structure and principle of the truck crane?
1. The boom and the crane boom have rectangular, hexagonal and octagonal structures. Nowadays, hexagonal and octagonal shapes are used. The main function is to support the load and change the working radius of the crane. It consists of a basic arm, various stages of telescopic arms, telescopic cylinders, etc. The boom movements of the truck cranes are generally carried out in a certain order. When extending, the two arms are extended first, and then the three arms and the top arm are extended. The order of retraction is reversed, and the sequential actions are controlled by sequential valves.
2. Hoisting mechanism: The hoisting mechanism is mainly composed of a hoisting motor, a reduction gear box and a reel. It is mounted on the column, and the ram drive motor drives the reduction gear box to drive the reel to rotate, thereby achieving lifting and lowering of heavy objects. Feel free to stop.
3. Variable-width cylinder: The variable-width cylinder is mainly composed of a cylinder block, a piston rod, a cylinder head and a seal. The principle is to use the flow of liquid to complete the expansion and contraction of the cylinder, and its function is to adjust the undulation angle of the boom.
4. Swing mechanism: The slewing mechanism consists of a rotary reduction gearbox and a hydraulic motor. The principle is to use the hydraulic power of the truck crane to drive the hydraulic motor to rotate, and drive the worm of the rotary reduction gearbox to rotate. The function of the slewing mechanism is to drive the upper column and the jib of the crane. Center rotation.
5. Leg structure: The legs are divided into forelegs and rear legs. The front leg mechanism consists of a leg frame, a leg frame telescopic cylinder and a leg cylinder. The rear leg mechanism consists of a bracket and a leg cylinder. The liquid flow is used to complete the expansion and contraction of the cylinder, and the function is to stabilize and support the operation of the cylinder during operation, thereby reducing the load on the chassis beam.
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