Control circuit for controlling hydraulic motor driver in forklift

Abstract

The invention discloses a control circuit for controlling a hydraulic motor driver in a forklift, comprising a power supply module (1), a main control module (2), a potentiometer signal input circuit (3), a solenoid valve drive module (4), a stroke Switch signal input circuit (5) and bus module (6), potentiometer signal input circuit (3), solenoid valve drive module (4), travel switch signal input circuit (5) and bus module (6) are all connected with the main control module (2) Electrical connection, main control module (2), potentiometer signal input circuit (3), solenoid valve drive module (4), travel switch signal input circuit (5) and bus module (6) are all connected to the power module (1 ) electrical connection; the present invention realizes the stepless speed regulation of the rise and fall of the front fork of the forklift, and realizes the stepless control of the front and rear adjustment speed of the front fork of the forklift, which greatly improves the flexibility and operability of the forklift in use.

Description

technical field [0001] The invention relates to the technical field of forklift control circuits, in particular to a control circuit for controlling a hydraulic motor driver in a forklift. Background technique [0002] Electric forklifts have the advantages of high energy conversion efficiency, low noise, no exhaust gas emissions, and convenient control. They are widely used in workshops, warehouses, food, pharmaceuticals, microelectronics, and instrumentation, etc. The forklift relies on the battery installed inside the electric forklift to provide electric energy, and the lifting of the front fork in the electric forklift is controlled by a hydraulic system. The hydraulic system mainly includes hydraulic motors, hydraulic pumps, pipelines, solenoid valves, and hydraulic cylinders. And the hydraulic motor driver used to drive the hydraulic motor to rotate. When working, the hydraulic motor drives the hydraulic pump to rotate under the control of the hydraulic motor driver. ...

AI Technical Summary

Problems solved by technology

However, the current hydraulic motor is under the control of the hydraulic motor driver, and the speed of the hydraulic motor is constant, so that the speed of the hydraulic pump is inconvenient, and the lifting speed of the front fork in the forklift is constant.

Since the lifting speed of the front fork is constant, there are disadvantages of poor stability when the forklift is lifting, lowering and handling goods, and there is a disadvantage of poor operational flexibility

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