Novel electric control device of hydraulic valve

Abstract

The utility model discloses a novel electric control device of a hydraulic valve, which comprises a control module, the control module comprises an execution controller, the execution controller is connected with a steering engine driving circuit board, the control module is connected with an execution module, the execution module comprises a hydraulic mechanical valve group, the steering engine driving circuit board is connected with the hydraulic mechanical valve group, and the hydraulic mechanical valve group is connected with the execution module. The hydraulic mechanical valve set comprises a plurality of steering engines which are evenly arranged, the steering engines are connected with steering engine arms, the steering engine arms are connected with mechanical connecting rods, and the mechanical connecting rods are connected with mechanical valve element pull rods. The utility model can effectively solve the problems of electric control precision and cost of the hydraulic valve, and has the advantages of small operating force, sensitive operation, remote control and the like compared with a mechanical control hydraulic valve; compared with a hydraulic control valve, the hydraulic control valve has the advantages of high expansibility and capability of simply incorporating a remote control function; compared with a traditional electromagnetic proportional control valve, cost is reduced, control precision is completely consistent, and electric control and remote control popularization of hydraulic equipment can be effectively achieved through reliability, effectiveness and low cost of the electromagnetic proportional control valve.

Description

Technical Field

[0001] This utility model belongs to the field of hydraulic valve technology, and specifically relates to a novel electrical control device for hydraulic valves. Background Technology

[0002] A hydraulic valve is an automated component operated by pressurized oil. It is controlled by the pressurized oil of a pressure regulating valve and is usually used in combination with a solenoid pressure regulating valve. It can be used for remote control of the on / off of oil, gas and water pipeline systems in hydropower stations. It is commonly used in oil circuits for clamping, control and lubrication. Hydraulic valves can be classified according to their operation method as manual, motorized, electric control and hydraulic control.

[0003] Hydraulic valves are core components of excavators. They are devices that control the movement and working state of actuators by adjusting or changing parameters such as the flow direction, pressure, and flow rate of hydraulic fluid in the hydraulic system. In excavators, hydraulic valves mainly control the excavator's travel, rotation, boom, and stick movements, ensuring that the excavator can perform various operations according to the operator's instructions.

[0004] In the existing hydraulic engineering equipment market, hydraulic valves controlled by electric handles cost about eight to ten times more than ordinary mechanical valves. Remote control systems (remote controllers and controllers) add another two to three times the price. Therefore, there is an urgent need for a new type of electric control device for hydraulic valves to reduce the production cost of electric and remote control hydraulic engineering equipment. Utility Model Content

[0005] In view of the problems mentioned above in the background technology, the purpose of this utility model is to provide a new type of electronic control device for hydraulic valves.

[0006] To achieve the above-mentioned technical objectives, the technical solution adopted by this utility model is as follows:

[0007] A novel electronic control device for a hydraulic valve includes a control module. The control module includes an execution controller connected to a servo motor drive circuit board. The control module is connected to an execution module, which includes a hydraulic-mechanical valve assembly. The servo motor drive circuit board is connected to the hydraulic-mechanical valve assembly. The hydraulic-mechanical valve assembly includes several evenly arranged servos. Each servo motor is connected to a servo motor arm, which is connected to a mechanical linkage. The mechanical linkage is connected to a mechanical valve core pull rod.

[0008] Furthermore, the actuator controller is defined as a 0-5V electric control handle, a PWM control handle, or a switch. This structural design facilitates operation and control.

[0009] Furthermore, the control module also includes a remote controller connected to a receiver, which is connected to the hydraulic mechanical valve assembly. This structural design also enables remote control and allows switching between remote control and actuator controller operation.

[0010] Furthermore, the mechanical linkage is a fisheye linkage. This structural design effectively solves the problem of force tilting when the rotational force is converted into an up-and-down reciprocating force.

[0011] Furthermore, the actuator controller is connected to the input terminal of the servo drive circuit board via a signal line, and the output terminal of the servo drive circuit board is connected to the servo. This structural design facilitates connection and use.

[0012] The beneficial effects of this utility model are as follows: This utility model can effectively solve the problems of electric control accuracy and cost of hydraulic valves. Compared with mechanically controlled hydraulic valves, it has the advantages of small operating force, sensitive operation, and remote control capability. Compared with hydraulic control valves, it has the advantages of strong expandability and simple integration of remote control function. Compared with traditional electromagnetic proportional control valves, the cost is reduced by 70% while the control accuracy is completely consistent. The reliability, effectiveness, and low cost of this utility model can effectively realize the popularization of electric and remote control of hydraulic equipment. Attached Figure Description

[0013] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings;

[0014] Figure 1 This is a schematic diagram of the module connection structure of the electronic control device for a novel hydraulic valve according to an embodiment of the present invention;

[0015] Figure 2 This is a schematic diagram of the servo shaft side structure of an electronic control device for a novel hydraulic valve according to an embodiment of the present invention;

[0016] The symbols for the main components are explained below:

[0017] Control module 1, Execution controller 2, Servo drive circuit board 3, Execution module 4, Hydraulic mechanical valve group 5, Servo 6, Servo arm 7, Mechanical linkage 8, Mechanical valve core rod 9, Remote controller 10, Receiver 11. Detailed Implementation

[0018] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0019] Example 1, such as Figure 1 and Figure 2As shown, a novel electronic control device for a hydraulic valve includes a control module 1 comprising an execution controller 2, which is connected to a servo motor drive circuit board 3. The control module 1 is also connected to an execution module 4, which includes a hydraulic mechanical valve assembly 5. The servo motor drive circuit board 3 is connected to the hydraulic mechanical valve assembly 5, which includes several evenly arranged servo motors 6. Each servo motor 6 is connected to a servo motor arm 7, which is connected to a mechanical linkage 8. The mechanical linkage 8 is connected to a mechanical valve core pull rod 9.

[0020] In this embodiment, the execution controller 2 sends control commands to the servo drive circuit board 3. After receiving the control commands from the execution controller 2, the servo drive circuit board 3 sends action commands to the execution module 4 after signal conversion by the control module 1. The servo 6 rotates up and down under the command, transmitting the rotational torque of the servo arm 7 to the mechanical link 8. The mechanical link 8 transmits the driving force to the mechanical valve core pull rod 9. The mechanical valve core pull rod 9 pulls the hydraulic valve core, and the hydraulic oil flows to the working device to complete the action.

[0021] Example 2, as Figure 1 As shown, this embodiment adds the following structure to the embodiment 1: the execution controller 2 is a 0-5V electric control handle, a PWM control handle, and a switch.

[0022] In this embodiment, the present invention can use a 0-5V electric control handle, a PWM (pulse width modulation signal) control handle, or a high-torque servo motor and a set of linkage mechanisms to replace the existing mechanical handle of the hydraulic valve, control the oil pressure and electromagnetic proportional iron to drive the hydraulic valve core, and realize the on-off control of the hydraulic valve core.

[0023] Example 3, as Figure 1 As shown, this embodiment adds the following structure based on embodiment 1: the control module 1 also includes a remote controller 10, the remote controller 10 is connected to a receiver 11, and the receiver 11 is connected to the hydraulic mechanical valve group 5.

[0024] In this embodiment, a remote controller 10 can also be used to directly send action commands to the servo motor 6 through the receiver 11. The control circuits of the remote controller 10 and the execution controller 2 are protected against interference by a two-to-one logic circuit, realizing one-button switching between remote control and manual control.

[0025] In this invention, the electronic control and remote control functions can be used separately and are not necessarily related.

[0026] Example 4, as Figure 2 As shown, this embodiment adds the following structure to the embodiment 1: the mechanical link 8 is a fisheye link.

[0027] In this embodiment, since the rotational torque is converted into reciprocating operating force, there will be a tilting force. Therefore, the upper and lower connecting parts of the mechanical link 8 use fisheye universal joints to solve the risk of locking of the action due to the tilting force and to make the reciprocating action smooth.

[0028] Example 5, as Figure 1 As shown, this embodiment adds the following structure to the embodiment 1: the execution controller 2 is connected to the input terminal of the servo drive circuit board 3 via a signal line, and the output terminal of the servo drive circuit board 3 is connected to the servo 6.

[0029] In this embodiment, the execution controller 2 is connected to the servo drive circuit board 3 via a signal line, which makes the connection stable and convenient for subsequent use. The output end of the servo drive circuit board 3 and the servo 6 can be directly controlled and used.

[0030] Taking a 9-channel hydraulic excavator mechanical valve as an example, this utility model uses a servo motor and connecting rod to replace the original lever handle to control the on / off state of the hydraulic valve, as detailed below:

[0031] 1. Select two 0-5V circumferential signal electric control handles to control the excavator's boom, stick, bucket, and swing respectively. In addition, use five self-resetting three-position switches to control the bulldozer blade, track extension and retraction, left and right travel, and boom sway.

[0032] 2. Select a servo motor with a force of 35kg-45kg and connect the servo motor arm with a fisheye link and a mechanical valve rod. The fisheye link can effectively solve the problem of tilting force when the rotational force is converted into the up-and-down reciprocating force.

[0033] 3. In actual operation, when the electric control handle is tilted 360°, the voltage signal corresponding to each direction is transmitted to the servo drive board. The servo drive board converts the 0-5V signal from the handle switch into PWM (pulse width modulation signal) and outputs it to the servo.

[0034] 4. After receiving the drive signal from the drive board, the servo motor rotates 90 degrees counterclockwise or clockwise. During rotation, the servo arm converts the rotational torque into radial force and transmits it to the connecting rod, causing the connecting rod to move up and down, thereby pulling the hydraulic valve core.

[0035] 5. After the hydraulic valve core is pulled, the hydraulic oil can be connected to the corresponding working cylinder or motor according to the action requirements, and the working cylinder or motor can perform the action.

[0036] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A novel electrical control device for a hydraulic valve, characterized in that: The system includes a control module (1), which includes an execution controller (2). The execution controller (2) is connected to a servo drive circuit board (3). The control module (1) is connected to an execution module (4), which includes a hydraulic mechanical valve group (5). The servo drive circuit board (3) is connected to the hydraulic mechanical valve group (5). The hydraulic mechanical valve group (5) includes several evenly arranged servos (6). The servos (6) are connected to servo arms (7). The servo arms (7) are connected to mechanical linkages (8). The mechanical linkages (8) are connected to mechanical valve core pull rods (9).

2. The electronic control device for a novel hydraulic valve according to claim 1, characterized in that: The execution controller (2) is a 0-5V electric control handle, a PWM control handle, and a switch.

3. The electronic control device for a novel hydraulic valve according to claim 2, characterized in that: The control module (1) also includes a remote controller (10), which is connected to a receiver (11), and the receiver (11) is connected to the hydraulic mechanical valve group (5).

4. The electronic control device for a novel hydraulic valve according to claim 3, characterized in that: The mechanical link (8) is a fisheye link.

5. The electronic control device for a novel hydraulic valve according to claim 4, characterized in that: The execution controller (2) is connected to the input terminal of the servo drive circuit board (3) via a signal line, and the output terminal of the servo drive circuit board (3) is connected to the servo (6).

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