Damping device for telescopic boom forklift

Abstract

The invention relates to a damping device for a telescopic boom forklift. The damping device comprises a valve body, a valve element, a first one-way damping valve, a first spring, an overflow valve assembly, a two-position three-way electromagnetic exchange valve, and a hand stop valve assembly, wherein a first oil port, a second oil port, a third oil port, a fourth oil port, a first mounting hole, a second mounting hole and a third mounting hole are arranged on the valve body; the valve element is arranged in the second mounting hole and is internally provided with a first damping channel and a second damping channel; and the first one-way damping valve is arranged in the first damping channel. The damping device for the telescopic boom forklift is simple in structure and compact in size, can realize damping control of the telescopic boom forklift when the telescopic boom forklift runs, and is convenient to maintain.

Description

technical field [0001] The invention belongs to the technical field of vibration damping devices, in particular to a vibration damping device for a telescopic arm forklift. Background technique [0002] The wheel side support of the telescopic forklift is rigidly connected to the frame, and the exciting vibration caused by the uneven road surface is completely borne by the four tires. When the telescopic forklift is driving or working, the boom cylinder does not move, and the boom, boom cylinder, and front frame are similar to rigid connections at this time. Due to the effect of road conditions and tires, the whole vehicle will center on the front axle. Swinging will sometimes cause the rear axle to break away from the ground, and the driver's body will swing with the vehicle at this time, making it difficult to control and driving comfort is very poor. Because the working device, heavy objects and other parts of the machine body will react to the bumpy bottom or obstacles,...

AI Technical Summary

Problems solved by technology

When the telescopic forklift is driving or working, the boom cylinder does not move, and the boom, boom cylinder, and front frame are similar to rigid connections at this time. Due to the effect of road conditions and tires, the whole vehicle will center on the front axle. Swinging sometimes causes the rear axle to leave the ground, the driver's body swings with the whole vehicle at this time, it is difficult to control, and the driving comfort is very poor

Because the working device, heavy objects and other parts of the machine body will react to the bumpy bottom or obstacles, strong vibration and shock will be generated, which will seriously affect the ride comfort and stability of the whole machine

These effects will cause fatigue damage to structural parts such as working devices and frames, and the comfort of the vehicle will deteriorate, which will easily cause driver fatigue and serious damage. At the same time, it will also limit the driving speed during long-distance transition operations. Reduced fuel economy and operational efficiency

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