Hydraulic oil cylinder for truck cab

Abstract

The hydraulic oil cylinder for the truck cab comprises an oil cylinder body, a connecting lug seat and a connecting lug shaft, the oil cylinder body is of a cylindrical structure, the connecting lug seat is installed at the left end of the oil cylinder body through a screw, the connecting lug shaft is detachably installed at the right end of the oil cylinder body, and installation holes are formed in the middle of the connecting lug seat and the middle of the connecting lug shaft. The problems that when an existing hydraulic oil cylinder is used, the overload protection function cannot be achieved usually, when an oil pipe explodes due to large bearing capacity, the hydraulic oil cylinder drives a truck head to fall instantly, and maintenance personnel below the truck head easily have large potential safety hazards can be solved, and meanwhile when the existing hydraulic oil cylinder is used, the maintenance personnel cannot fall off instantly. The piston rod is prone to eccentricity due to uneven stress, so that a sealing ring on the outer side of the piston rod is seriously abraded, and the hydraulic oil cylinder leaks oil.

Description

Technical field [0001] The invention relates to the field of hydraulic cylinders, in particular to a hydraulic cylinder for a truck cab. technical background [0002] Many parts of medium and heavy-duty vehicles are arranged under the cab. For convenience of maintenance, an oil cylinder is connected between the cab and the chassis, so that it is convenient for medium and heavy-duty vehicles to turn the cab over during maintenance. The oil cylinder has a simple structure and reliable work. When it is used to realize reciprocating motion, the deceleration device can be omitted, and there is no transmission clearance, so the motion is stable. It can be used as the lifting and turning device of the cab to improve the stability. [0003] At present, the existing hydraulic cylinder for truck cab usually has the following defects when in use: 1. When in use, the existing hydraulic cylinder usually can't achieve the function of overload protection, and when the oil pipe bursts due to the...

AI Technical Summary

Problems solved by technology

[0005] The present invention can solve the problem that the existing hydraulic oil cylinder cannot realize the function of overload protection when it is in use. When the oil pipe bursts due to the large bearing capacity, the hydraulic oil cylinder will drive the head of the truck to fall instantly, and the maintenance personnel under the head of the truck are likely to have more problems. At the same time, when the existing hydraulic cylinder is in use, the uneven force on the piston rod is prone to eccentricity, resulting in serious wear of the sealing ring on the outside of the piston rod, causing oil leakage in the hydraulic cylinder and other problems.

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