Cover support device, construction machinery and vehicle

Abstract

The invention discloses a cover support device, engineering machinery and vehicles. The cover support device includes a gas spring, a connecting rod, and a composite support; the first end of the gas spring is hinged to the first part at a first hinge point; the gas spring The second end of the composite support and the first end of the composite support are hinged at the second hinge point, and the second end of the composite support and the second component are hinged at the third hinge point; the second hinge point and the third hinge point are not arranged axially; The first end of the rod and the first part are hinged at the fourth hinge point; the composite support is provided with a through hole, and the second end of the connecting rod passes through the through hole and slidably cooperates with the through hole; in the closed state of the cover, the second The second hinge point and the fourth hinge point are located on the same side of the line connecting the first hinge point and the third hinge point; the first part is a cover, and the second part is a frame or a vehicle frame; or, the first part is a frame or In the vehicle frame, the second component is a cover. The present invention can reduce or avoid expansion and contraction of the gas spring under the condition of micro-movement of the cover part, and prolong the service life of the gas spring.

Description

technical field [0001] The invention relates to the field of machinery, in particular to a supporting device for a cover, construction machinery with the supporting device, and a vehicle with the supporting device. Background technique [0002] Vehicles or engineering machinery are usually provided with a cover for covering the engine, storage compartment, etc. The cover is usually hinged with the frame of the vehicle or the frame of the construction machinery, in order to save effort and support the cover after opening For the purpose of vehicle or engineering machinery cover, gas springs are generally used to provide pre-support torque; gas springs are usually in the form of pneumatic cylinders, and the traditional gas spring installation method is that the position of the hinge point at one end does not move, while the position of the hinge point at the other end May vary with cover. [0003] Normally, the pre-support torque provided by the gas spring is slightly smaller...

AI Technical Summary

Problems solved by technology

[0003] Normally, the pre-support torque provided by the gas spring is slightly smaller than the self-weight moment of the cover, and the direction is opposite. When the cover is opened or closed, the piston rod of the gas spring is in the extended state, so the cover is in the closed state. Because the pre-support torque of the gas spring will offset part of the self-weight torque, the locking torque in the closed state will be smaller

However, due to the continuous vibration of vehicles or construction machinery such as road rollers, the cover can easily overcome the locking torque cycle to produce a small opening-closing action (hereinafter referred to as micro-movement), so that the gas spring is continuously stretched, causing the gas spring to advance Failure to reach its designed number of uses (lifetime)

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