Synchronizing circuit of hydraulic motors of two-column gantry lifter

Abstract

The invention discloses a synchronizing circuit of hydraulic motors of a two-column gantry lifter and belongs to the field of hydraulic transmission. The synchronous circuit comprises an oil tank, a hydraulic pump, an overflow valve, a reversing valve, a hydraulic cylinder A, a hydraulic cylinder B, a hydraulic motor A and a hydraulic motor B. An inlet oil pipe of the hydraulic pump is connected with the oil tank, an outlet oil pipe is respectively connected with the overflow valve and the reversing valve, an oil return pipe of the overflow valve and the reversing valve is connected with the oil tank, an oil port A of the reversing valve is divided into two branches, one branch is serially connected with the hydraulic motor A and then connected with the hydraulic cylinder A, and the other branch is serially connected with the hydraulic motor B and then connected with the hydraulic cylinder B. The hydraulic motor A is fixedly connected with a rotary shaft of the hydraulic motor B. The synchronizing circuit solves the problem that during operating of the two-column gantry lifter, ascending and descending speed and displacement are less synchronous of the hydraulic cylinders, and has the advantages of simple structure, reasonableness in design and manufacturability.

Description

technical field [0001] The invention belongs to the field of hydraulic transmission, and more specifically relates to a synchronous circuit of a hydraulic system of a lift. Background technique [0002] With the continuous development of the automobile industry, automobile repair and maintenance has gradually become a new industry. Among them, the lift, as an important tool in the process of car repair and maintenance, has also developed rapidly. The lift is mainly to raise the car from a safe height to another safe height, so as to facilitate manual operation and maintenance. At present, there are many types of lifts, which can be divided into mechanical transmission and hydraulic transmission according to the transmission mode. The mechanical transmission structure is simple and the price is cheap, but the lifting weight is limited, and the lead screw or working nut is prone to slipping, which poses a great safety hazard. The hydraulic transmission lift has good safety ...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problem that the speed and displacement of the existing two-column gantry lift are difficult to be synchronized during the working process, the present invention provides a synchronous circuit for the hydraulic motor of the two-column gantry lift. hydraulic motor to realize the movement synchronization of the hydraulic cylinder

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