Hydraulic system for balancing integrated block of slewing reducer

Abstract

The invention relates to a hydraulic system for balancing an integrated block of a slewing reducer. The hydraulic system for balancing the integrated block of the slewing reducer comprises a crane direction control valve, a shuttle valve, balance valves, overflow valves, a damping plug, a motor and a brake, wherein the crane direction control valve is connected with the motor through the shuttle valve, the two balance valves and the two overflow valves, and the damping plug is serially connected between a control oil way of the shuttle valve and a control oil way at the front of the brake; control oil ways of the two balance valves are connected together in parallel and then are connected with the control oil way of the shuttle valve in parallel; the two overflow valves are connected in parallel and then are connected onto an oil way between the motor and the balance valves. The hydraulic system for balancing the integrated block of the slewing reducer has the advantages that the slewing braking of a lorry-mounted crane is enabled to be more reliable, the lorry-mounted crane can work stably during start and stop of a slewing action or under the impact, the slewing operation is enabled to be more safe and reliable, the gear wear of the slewing reducer is reduced and the service life of the slewing reducer is prolonged.

Description

technical field [0001] The invention relates to the technical field of truck-mounted crane hydraulic equipment, in particular to a hydraulic system for balancing a rotary reducer integrated block for a truck-mounted crane. Background technique [0002] The rotary reducer used to perform the rotary action is installed on the turntable of the truck-mounted crane, and the integrated block is installed on the rotary reducer. During the operation, it is very likely that there will be vibration due to start, stop or impact, which will accelerate the gear wear of the rotary reducer, thereby reducing the life of the rotary reducer. In order to prevent the above situation, two balance valves are generally installed on the manifold, but in the case of frequent rotation, the gear of the rotary reducer is still severely worn, and the assembly clearance is also too large. Therefore, the double balance valve manifold pales in comparison. Contents of the invention [0003] In view of...

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Problems solved by technology

In order to prevent the above situation, two balance valves are generally installed on the integrated block, but in the case of frequent rotation, the gear of the rotary reducer is still severely worn, and the assembly clearance is also too large

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