Protection device of hydraulic oil cylinder and engineering vehicle

Abstract

The invention provides a protection device of a hydraulic oil cylinder and an engineering vehicle and relates to the technical field of hydraulic devices. The protection device comprises an airbag, afirst slide block and a second slide block, wherein the airbag comprises a first side face and a second side face; one end of the first slide block is connected to one end of a first side face of theairbag, and the other end of the first slide block and an oil cylinder port flange are connected in a slide manner along the circumferences; one end of the second slide block is connected to the otherend of the first side face of the airbag, and the other end of the second slide block and a piston rod fixation flange are connected in a slide manner along the circumferences; and the first slide block and the second slide block are used for adjusting the area, along the circumferences of a piston rod, of the airbag. During use, when the piston rod fixation flange is remote from and close to theoil cylinder port flange, the airbag can be driven to be unfolded and folded along the axial direction; when positions of the first slide block and the second slide block in a first slide block and asecond slide groove are adjusted, the area, along the circumferences of the piston rod, of the airbag can be adjusted, so a protection area of the airbag can be adjusted.

Description

technical field [0001] The invention relates to the technical field of hydraulic devices, in particular to a hydraulic oil cylinder protection device and an engineering vehicle. Background technique [0002] The working environment of general engineering machinery is very harsh, especially for a series of engineering vehicles such as excavators and bulldozers. In the reciprocating motion of conventional hydraulic cylinders, the piston and piston rod are the main components that bear the feedback force of the working mechanism, and mainly bear and transmit the force from Axial force, but due to the complex engineering environment, sometimes bending deformation occurs due to the radial force from the environment, affecting normal engineering operations. [0003] At present, in order to protect vulnerable parts such as piston rods, hydraulic cylinder protection devices are often added outside the piston rods. Most of the existing hydraulic cylinder protection devices are sleeve...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a hydraulic cylinder protection device to alleviate the existing hydraulic cylinder protection device, the ring structure of the sleeve is complicated and the working state of the piston rod of the cylinder cannot be checked at all times; Technical issues of adjusting the actual working posture

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