Suspension device for mining dump truck

Abstract

The invention discloses a suspension device for a mining dump truck, which comprises a cylinder barrel and a piston rod barrel. The inner side of the piston rod barrel and the inner side of the cylinder barrel form a cylinder barrel oil cavity; the lower end of the piston rod barrel is sleeved with a piston; the upper end of the cylinder barrel is provided with a cylinder sleeve; the inner side of the cylinder barrel and the outer side of the piston rod barrel form a ring-shaped oil cavity; and the ring-shaped oil cavity is connected with the cylinder barrel oil cavity through an internal damping hole and an internal damping one-way valve passage respectively which are formed on the piston rod cylinder. The suspension device is characterized in that: the outer side of the cylinder barrel, which is close to the internal damping hole, is provided with an external damping mechanism; an external damping oil cavity is formed in the external damping mechanism; an external damping one-way valve passage divides the external damping oil cavity into an upper oil cavity and a lower oil cavity; the upper oil cavity is communicated with the ring-shaped oil cavity through a through hole; and the lower oil cavity is communicated with the cylinder barrel oil cavity through the external damping hole, the external damping hole is arranged below the idle load travel of the piston and above the full load travel. The external damping mechanism is arranged, so the suspension device can meet the requirements of a vehicle on rigidity and damping performance under idle load and full load working conditions.

Description

technical field [0001] The invention relates to a suspension device, in particular to a suspension device used for mine dump trucks. Background technique [0002] In daily engineering construction, it is often necessary to use engineering trucks. Engineering trucks are mainly used for the transportation of various materials. Among engineering trucks, mining dump trucks are more commonly used. Mining dump truck is a mining transport vehicle, which belongs to one of the mining equipment and is mainly used for the transportation of ore and other bulk materials in the mine. Due to changes in driving conditions such as load and road conditions during driving, the mining dump truck has high requirements for stiffness and damping characteristics, so the vehicle is equipped with a suspension device. [0003] The suspension device is the shock absorbing device, which is the general term for all force transmission devices between the frame of the vehicle and the axle or wheels. Give...

AI Technical Summary

Problems solved by technology

[0004] However, in actual use, the design of the suspension device of a general mining dump truck is mostly based on a certain working condition of the vehicle. The problem of poor driving comfort

From the above, it can be seen that there is a big problem with the commonly used suspension devices at present, that is, it cannot take into account the requirements of stiffness and damping performance of mining dump trucks under both no-load and full-load conditions at the same time.

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