Limiting structure of dumper front telescopic sleeve hydraulic cylinder

Abstract

The invention provides a limiting structure of a dumper front telescopic sleeve hydraulic cylinder. The limiting structure comprises a dumper front telescopic sleeve hydraulic cylinder body which is hinged to a secondary beam through a hinge shaft, a limiting valve is mounted on the side face of the lower portion of the dumper front telescopic sleeve hydraulic cylinder body through a limiting valve support, and an inverse-V-shaped baffle corresponding to the top end of the limiting valve is arranged on the secondary beam, so that the limiting valve and the baffle form a reversed limiting structure. According to the limiting structure, a traditional mounting mode and a locating structure are changed, the locating structure of a product is more reasonable, and mounting is convenient; meanwhile, the reliability and the stability of the limiting structure are guaranteed, and the failure of the limiting valve due to shaking of the secondary beam during running is avoided; the angle and the position of the baffle can be changed anytime according to needs, the cost of secondary replacement is low, and replacement can be achieved by common technicians.

Description

technical field [0001] The invention relates to the field of dump truck parts manufacturing, in particular to a position-limiting structure of a telescopic sleeve hydraulic cylinder at the front of the dump truck. Background technique [0002] Most of the limit valves of the traditional dump truck lifting system are installed on the chassis support and sub-beam. The dump truck telescopic sleeve hydraulic cylinder manufacturer will pre-weld the limit valve baffle on the outer cylinder of the cylinder. Sometimes the customer Welding will be performed on the limit valve baffle according to their own needs. Since the cylinder wall is thin, the inner wall of the cylinder will be deformed after welding, resulting in leakage of the oil cylinder or damage to the seal. At the same time, because the limit valve is installed on the auxiliary On the beam, long-term driving vibration will also cause the limit valve to fail. Contents of the invention [0003] The purpose of the present...

AI Technical Summary

Problems solved by technology

[0002] Most of the limit valves of the traditional dump truck lifting system are installed on the chassis support and sub-beam. The manufacturer of the telescopic sleeve hydraulic cylinder of the dump truck will pre-weld the limit valve baffle on the outer cylinder of the cylinder. Sometimes the customer Welding will be performed on the limit valve baffle according to their own needs. Since the cylinder wall is thin, the inner wall of the cylinder will be deformed after welding, resulting in leakage of the oil cylinder or damage to the seal. At the same time, because the limit valve is installed on the auxiliary On the beam, long-term driving vibration will also cause the failure of the limit valve

Images