Damping device of swing arms of slipping steering loaders

Abstract

The invention discloses a damping device of swing arms of slipping steering loaders, comprising a swing arm cylinder, a three-position six-way valve which is used for controlling the swing arm cylinder, an energy accumulator, a fuel tank, a first two-position two-way solenoid valve and a second two-position two-way solenoid valve. The first two-position two-way solenoid valve comprises a zero leakage plug-in-type cut-off valve. The large chamber of the swing arm cylinder is connected with the energy accumulator by an oil pipe and the first two-position two-way solenoid valve is arranged on the pipeline between the large chamber of the swing arm cylinder and the energy accumulator. The small chamber of the swing arm cylinder is connected with the fuel tank by the second two-position two-way solenoid valve. The damping device has beneficial effects that the two-position two-way solenoid valves adopted by the invention has a two-direction zero-leakage cutting off function, thus in the case of long-time halt state, the oil pressure in the energy accumulator remains unchanged to effectively avoid bad damping effects or damping failure which are caused by leakage of oil in the energy accumulator. A fixed throttling valve is adopted to reduce the purchase cost and adjustment workload and improve the reliability of the damping device.

Description

technical field [0001] The invention relates to a vibration damping device, in particular to a vibration damping device for a skid steer loader arm. Background technique [0002] The wheel side support of the skid steer loader is rigidly connected to the frame, and the excitation vibration caused by the uneven road surface is completely borne by the tires. Due to the harsh working conditions of the skid steer loader, and the center of gravity of the working device is outside the frame, strong vibration and impact will be generated during the transportation operation, which seriously affects 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 driving fatigue and serious damage. Due to the vibration, the material in the bucket will also be scattered. At the same time, it also limits the driving speed during ...

AI Technical Summary

Problems solved by technology

After the product is in the hands of the user, if the throttle valve is adjusted during the maintenance process, the vibration damping effect will change, and in severe cases, the vibration damping function will be lost

[0007] 3. There is no overflow valve in the circuit composed of the accumulator and the large chamber of the boom. If the road surface excitation exceeds the maximum pressure capacity of the accumulator, a safety accident will occur

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