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The material of the dump truck cylinder: The raw material of the dump truck cylinder is general seamless steel pipe, and the material is silicomanganese. The limit pressure of the piston belt of the dump truck cylinder is 16 MPa, and the stroke range of the cylinder ranges from 3830 to 8000.

Dump Truck Cylinder

 1.The components of the dump truck cylinder: 5 parts, 1. Cylinder tube and cylinder head 2. Piston and piston rod 3. Sealing device 4. Buffer device 5. Exhaust device

  1. Cylinder tube and cylinder head: made of high-strength alloy steel, the cylinder body is manufactured by changing the wall thickness of the cylinder body according to the appropriate strength and size. The inner surface of the cylinder body of our company is rolled to achieve a good surface finish and hardness, so as to achieve internal friction. The force is minimized and the wear resistance is improved to extend the service life of the seal.

  2. Pistons and piston rods: made of precision ground high-strength carbon steel, based on the design concept of improving the strength of the rod body and high-performance heat treatment, through hard chromium plating and CNC numerical control polishing, to ensure the uniformity and texture of the surface High finish, thus ensuring the goodness of the surface oil film and improving the service life of the seal. All piston rods and piston assemblies have a safety factor of at least 4:1 based on the tensile strength under rated load at the smallest cross-section.

  3. Sealing device: The sealing ring that can overcome the use conditions of construction machinery, mining machinery, lifting and transportation industries, and the company’s unique sealing system design, effectively solves the problem of oil leakage at the end of the piston rod and dryness of the piston rod. The occurrence of friction phenomenon.

  4. Cushioning device: It is made of high-strength alloy steel. After heat treatment and surface treatment, it can fully ensure the test of high back pressure in the process of buffering before and after the hydraulic cylinder is used. In addition, there is a built-in buffer mechanism that can absorb shock and release pressure at the end of the stroke. The effective gap between the buffer sleeve and the piston rod can not only reduce the starting pressure of the hydraulic cylinder, but also has the function of automatically adjusting the concentricity, eliminating the effect of concentricity errors, and has good cushioning performance, which can reduce noise and impact load, and extend the machine's Service life.

  5. Exhaust device: According to needs, various valves with special slow-return counter balance and emergency shut-off functions can be installed relatively easily.

2. Working principle of dump truck:

    Take a manual jack as its working principle. The jack is the simplest oil cylinder. Manually pressurize the stalk (hydraulic manual pump) to make the hydraulic oil enter the cylinder through a single valve. At this time, the hydraulic oil entering the cylinder cannot be reversed because of the single valve, forcing the cylinder rod upward, and then continuing to make the hydraulic oil continue to work. Enter the hydraulic cylinder and continue to rise in this way. When it is about to fall, open the hydraulic valve to return the hydraulic oil to the tank. This is the simplest working principle, and everything else is improved on this basis.

The performance and use of the dump truck cylinder: the cylinder is mainly used for the front straight jacking mechanism of the dump truck. It adopts advanced processing technology, selects high-quality steel, and general imported seals. The structure is reasonable, the performance is reliable, and it is easy to install and maintain, and lift. Features such as large tonnage and long service life.


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