Unilateral throttling synchronism loop of dual-column gantry lifting machine

Abstract

The invention discloses a unilateral throttling synchronism loop of a dual-column gantry lifting machine and belongs to the filed of hydraulic transmission. The unilateral throttling synchronism loop comprises an oil tank, a hydraulic pump, an overflow valve, a reversal valve, a hydraulic cylinder and a one-way throttle valve, wherein an inlet oil tube of the hydraulic pump is connected with the oil tank, and an outlet oil tube of the hydraulic pump is respectively connected with the overflow valve and the reversal valve; oil return tubes of the overflow valve and the reversal valve are connected with the oil tank; the one-way throttle valve is connected with a connecting oil way of the hydraulic cylinder and the reversal valve in series. The unilateral throttling synchronism loop can be used for solving the problem that the lifting speed and displacement of an existing dual-column gantry lifting machine in a lifting process are difficult to synchronize, and has the advantages of being simple in structure, reasonable in design and easy to manufacture.

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 lifting speed and displacement of the existing two-column gantry lift are difficult to synchronize during the lifting process, the present invention provides a one-side throttling synchronous circuit of the two-column gantry lift. A one-way throttle valve is installed on the oil return line to adjust the flow rate of the throttle valve so that the speed and displacement of the hydraulic cylinder are synchronized

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