Hydraulic control device for improving walking precision of forging manipulator and eliminating noise

Abstract

A hydraulic control device for improving walking precision of a forging manipulator and eliminating noise comprises a hydraulic pump, an executing mechanism hydraulic motor, a first one-way valve, a two-position three-way electromagnetic valve, a proportional direction valve, a switch cartridge valve and an active control valve set. The output end of the hydraulic pump is sequentially communicated with an oil inlet of the proportional direction valve and an A / B port hydraulic oil way of the executing mechanism hydraulic motor through a main oil way. An oil inlet of the first one-way valve is communicated with an A / B port oil way of the actuating mechanism hydraulic motor, and an oil outlet is connected with the oil tank through an oil supplementing pipeline; a first working oil port of the two-position three-way electromagnetic valve is communicated with an A port oil way of the actuating mechanism hydraulic motor, a second working oil port is communicated with a B port oil way, and an oil return port is connected with the oil tank; an oil return port of the proportional direction valve is communicated with the oil tank through the switch cartridge valve, and the active control valve set is integrated on an A / B port oil way of the executing mechanism hydraulic motor. According to the utility model, the problems of noise and low positioning precision in the walking process of the forging manipulator are effectively solved, and the forging operation quality and efficiency are improved.

Description

Technical Field

[0001] This utility model relates to the field of metal forming and forging technology, specifically a hydraulic control device for improving the walking accuracy and noise reduction of a forging manipulator. Background Technology

[0002] Forging manipulators are indispensable equipment in the forging industry. However, their traveling mechanisms often suffer from noise and low positioning accuracy during forward and backward movement. This is mainly due to deficiencies in the original hydraulic control circuit, leading to unnecessary noise and inaccurate positioning during movement, thus affecting the quality and efficiency of forging operations. Utility Model Content

[0003] The purpose of this invention is to provide a hydraulic control device that improves the walking accuracy and noise reduction of a forging manipulator, aiming to reduce noise and improve walking positioning accuracy, so as to solve the problems of loud noise and low positioning accuracy of existing forging manipulators in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a hydraulic control device for improving the traveling accuracy and noise reduction of a forging manipulator, comprising a hydraulic pump, an actuator hydraulic motor, a safety valve, a first check valve, a two-position three-way solenoid valve, a proportional directional valve, a switch cartridge valve, and an active control valve group; the output end of the hydraulic pump is connected sequentially to the inlet of the proportional directional valve and the A / B port hydraulic circuit of the actuator hydraulic motor via the main oil circuit; the safety valve is connected between the main oil circuit and the oil tank, and its set pressure value is 1.05-1.2 times the rated pressure of the system; the inlet of the first check valve is connected to the A / B port oil circuit of the actuator hydraulic motor, and the outlet is connected to the oil tank via a replenishment oil line. Connections: The first working port of the two-position three-way solenoid valve is connected to the A port oil circuit of the actuator hydraulic motor, the second working port is connected to the B port oil circuit, and the return port is connected to the oil tank; the return port of the proportional directional valve is connected to the oil tank via a switch cartridge valve, and the control chamber of the switch cartridge valve is connected to the return oil of the main valve proportional directional valve; the active control valve group is integrated into the A / B port oil circuit of the actuator hydraulic motor, and the active control valve group includes a pressure reducing valve, a second check valve, and a relief valve arranged in parallel, wherein the inlet of the pressure reducing valve is connected to the output end of the hydraulic pump, the outlet is connected to the A / B port oil circuit of the hydraulic motor via the second check valve, and the set pressure of the relief valve is 0.8-0.9 times the rated pressure of the system.

[0005] Preferably, the first check valve replenishes oil to the hydraulic motor of the actuator when the forging manipulator stops moving, to prevent high pressure from forming at one port and low pressure at the other port of the hydraulic motor of the actuator.

[0006] Preferably, the two-position three-way solenoid valve further effectively balances the pressure at ports A and B of the hydraulic motor when the forging manipulator stops moving.

[0007] Preferably, the active control valve group actively supplies oil to the hydraulic motor when the travel stops, causing the hydraulic motor on one side to rotate in both directions.

[0008] Preferably, the switch cartridge valve is located at the return port of the proportional directional valve, which effectively solves the problem of oil leakage in the O-type function of the proportional directional valve in the middle position.

[0009] The working process of this utility model is as follows:

[0010] During travel: The proportional directional valve controls the travel speed and direction, and the switch cartridge valve opens to allow normal oil return; When travel stops: The check valve prevents high or low pressure from forming at the hydraulic motor port; The two-position three-way valve balances the pressure at the A / B ports of the hydraulic motor; The active control valve group actively controls the forward and reverse rotation of one side of the hydraulic motor to improve positioning accuracy; The switch cartridge valve closes to prevent oil leakage.

[0011] The beneficial effects of this utility model are as follows:

[0012] (1) This utility model effectively balances the hydraulic motor pressure of the actuator by using a combination of a first check valve and a two-position three-way solenoid valve, thereby reducing noise during the walking process.

[0013] (2) In this utility model, the active control valve group actively controls the forward and reverse rotation of the hydraulic motor when the walking stops, thereby improving the positioning accuracy of the walking mechanism.

[0014] (3) The switch cartridge valve in this utility model solves the problem of oil leakage in the O-type function of the proportional directional valve in the middle position, and improves the stability of the system. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the hydraulic circuit of this utility model;

[0016] In the diagram: 1-Hydraulic motor, 2-Safety valve, 3-First check valve, 4-Two-position three-way solenoid valve, 5-Proportional directional valve, 6-Switch cartridge valve, 7-Active control valve assembly, 71-Pressure reducing valve, 72-Second check valve, 73-Relief valve. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings.

[0018] like Figure 1The hydraulic control device shown is for improving the walking accuracy and noise reduction of a forging manipulator. It includes a hydraulic pump, an actuator hydraulic motor 1, a safety valve 2, a first check valve 3, a two-position three-way solenoid valve 4, a proportional directional valve 5, a switch cartridge valve 6, and an active control valve group 7. The output end of the hydraulic pump is connected sequentially to the inlet of the proportional directional valve 5 and the A / B ports of the actuator hydraulic motor 1 via the main oil circuit. The safety valve 2 is connected between the main oil circuit and the oil tank, and its set pressure value is 1.05-1.2 times the rated pressure of the system. The inlet of the first check valve 3 is connected to the A / B ports of the actuator hydraulic motor 1, and its outlet is connected to the oil tank via a replenishment line. The first check valve 3 replenishes oil to the actuator hydraulic motor 1 when the forging manipulator stops moving, preventing high pressure from forming at one port and low pressure at the other.

[0019] The first working port of the two-position three-way solenoid valve 4 is connected to the A port oil circuit of the hydraulic motor 1 of the actuator, the second working port is connected to the B port oil circuit, and the return port is connected to the oil tank; the two-position three-way solenoid valve 4 further effectively balances the pressure of the hydraulic motor A / B ports when the forging manipulator stops moving.

[0020] The return port of the proportional directional valve 5 is connected to the oil tank via the switch cartridge valve 6. The control chamber of the switch cartridge valve 6 is connected to the return port of the main valve proportional directional valve 5, which effectively solves the problem of oil leakage in the O-type function of the proportional directional valve in the middle position.

[0021] The active control valve assembly 7 is integrated into the A / B port oil circuit of the actuator hydraulic motor 1. The active control valve assembly 7 includes a pressure reducing valve 71, a second check valve 72, and a relief valve 73 arranged in parallel. The inlet of the pressure reducing valve 71 is connected to the output end of the hydraulic pump, and its outlet is connected to the A / B port oil circuit of the hydraulic motor 1 via the second check valve 72. The set pressure of the relief valve 73 is 0.8-0.9 times the rated pressure of the system. When travel stops, the active control valve assembly 7 actively supplies oil to the hydraulic motor, causing one side of the hydraulic motor to rotate in both directions.

[0022] The working process of this utility model is as follows:

[0023] During travel: Proportional directional valve 5 controls travel speed and direction, and switch cartridge valve 6 opens to allow normal oil return.

[0024] When the travel stops: Check valve 3 prevents high or low pressure from forming at the hydraulic motor port; two-position three-way valve 4 balances the pressure at the A / B ports of the hydraulic motor; active control valve group 7 actively controls the forward and reverse rotation of one side of the hydraulic motor to improve positioning accuracy; switch cartridge valve 6 is closed to prevent oil leakage.

[0025] Through the above technical solutions, this utility model effectively solves the problems of noise and low positioning accuracy during the movement of the forging manipulator, and improves the quality and efficiency of forging operations.

[0026] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, based on the technical teachings provided by this utility model and as common knowledge in the mechanical field, other equivalent modifications and improvements can be made, and these should also be considered within the scope of protection of this utility model.

Claims

1. A hydraulic control device for improving walking accuracy and noise reduction of a forging manipulator, characterized by: The hydraulic pump, the actuator hydraulic motor (1), the safety valve (2), the first check valve (3), the two-position three-way electromagnetic valve (4), the proportional directional valve (5), the on-off cartridge valve (6) and the active control valve group (7) are included; the output end of the hydraulic pump is communicated with the oil inlet of the proportional directional valve (5) and the A / B port hydraulic oil circuit of the actuator hydraulic motor (1) in sequence through the main oil circuit; the safety valve (2) is connected across the main oil circuit and the oil tank, and the set pressure value is 1.05-1.2 times of the system rated pressure; the oil inlet of the first check valve (3) is communicated with the A / B port oil circuit of the actuator hydraulic motor (1), and the oil outlet is connected with the oil tank through the oil supplement pipeline; the first working oil port of the two-position three-way electromagnetic valve (4) is communicated with the A port oil circuit of the actuator hydraulic motor (1), the second working oil port is communicated with the B port oil circuit, and the oil return port is connected with the oil tank; The oil return port of the proportional directional valve (5) is communicated with the oil tank through the on-off cartridge valve (6), and the control cavity of the on-off cartridge valve (6) is communicated with the oil return of the main valve proportional directional valve (5); The active control valve group (7) is integrated in the A / B port oil circuit of the actuator hydraulic motor (1), and the active control valve group (7) includes the pressure reducing valve (71), the second check valve (72) and the overflow valve (73) arranged in parallel, wherein the inlet of the pressure reducing valve (71) is communicated with the output end of the hydraulic pump, the outlet is communicated with the A / B port oil circuit of the hydraulic motor (1) through the second check valve (72), and the set pressure of the overflow valve (73) is 0.8-0.9 times of the system rated pressure.

2. The hydraulic control device for improving walking accuracy and noise reduction of a forging manipulator according to claim 1, characterized in that: The first check valve (3) supplements the oil for the actuator hydraulic motor (1) when the forging manipulator stops walking, so that high pressure is formed at one port of the actuator hydraulic motor (1) and low pressure is formed at the other port.

3. The hydraulic control device for improving walking accuracy and muffling of a forging manipulator according to claim 1 or 2, characterized in that: The two-position three-way electromagnetic valve (4) further effectively balances the pressure of the A / B port of the hydraulic motor when the forging manipulator stops walking.

4. The hydraulic control device for improving walking accuracy and noise reduction of a forging manipulator according to claim 3, characterized in that: The active control valve group (7) actively supplies oil to the hydraulic motor when the walking stops, so that the hydraulic motor on one side is reversed.

5. The hydraulic control device for improving walking accuracy and muffling of a forging manipulator according to claim 4, characterized in that: The on-off cartridge valve (6) is arranged at the oil return port of the proportional directional valve (5), which effectively solves the oil leakage phenomenon of the O-shaped function in the middle position of the proportional directional valve.

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