A steering proportional valve group test platform

Abstract

The application provides a steering proportional valve group test platform, which comprises a case, a test table top arranged on the case, a central processing unit arranged in the case, and a test unit arranged on the case; the central processing unit is electrically connected with the test unit; the valve group to be tested is placed on the test table top and fixed; an oil line hose is used to connect an oil source of the test platform to an oil source of a test site; the oil line hose is used to complete pipeline connection according to a preset test schematic diagram; after the connection is completed, a total power switch of the test platform is turned on, and the test of the valve group to be tested is completed by running test software. The steering proportional valve group test platform provided by the application can automatically collect data such as flow and automatically control the opening degree of the proportional valve during the valve group test, thereby greatly improving the test efficiency and reducing the labor intensity of the operator.

Description

Technical Field

[0001] This invention belongs to the field of valve assembly testing equipment, and more specifically, relates to a steering proportion valve assembly testing platform. Background Technology

[0002] Hydraulic valve assemblies are components used to control and regulate the pressure, flow rate, and direction of liquids. During the production of hydraulic valve assemblies, they need to be inspected. The main function of hydraulic valve assembly inspection fixtures is to inspect the internal gaps of the hydraulic valve assembly to determine whether these gaps meet standards. Traditional manual inspection methods for hydraulic valve assemblies suffer from drawbacks such as low efficiency, poor accuracy, susceptibility to errors, and difficulty in collecting test data. Summary of the Invention

[0003] This invention provides a steering proportioning valve assembly test platform, which aims to solve the technical problem of difficulty in collecting test data in existing manual testing methods for hydraulic valve assemblies.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is: to provide a steering proportioning valve assembly test platform, comprising: The chassis is equipped with a test bench surface; The central processing unit is located inside the chassis; A test unit is mounted on the chassis; the central processing unit is electrically connected to the test unit. Place the valve assembly under test onto the test bench and secure it. Connect the oil source of the test platform to the oil source of the test site using an oil hose. Complete the pipeline connection using the oil hose according to the preset test schematic diagram. After connection, turn on the main power switch of the test platform and run the test software to complete the test of the valve assembly under test.

[0005] Preferably, the chassis is equipped with a flow meter head, a pressure meter head, a test pipeline interface, an overflow valve assembly, an oil inlet interface, a return port, and an external measurement port.

[0006] Preferably, the overflow valve assembly includes an overflow valve body and an overflow valve block; the overflow valve block is disposed on the housing, and the overflow valve body is mounted on the overflow valve block.

[0007] Preferably, the chassis is equipped with a pressure sensor and a flow sensor; the pressure sensor corresponds one-to-one with the pressure gauge head; the flow sensor corresponds one-to-one with the flow meter head.

[0008] Preferably, the chassis is provided with a support arm.

[0009] Preferably, the chassis is provided with pipelines, and the medium in the pipelines is aviation hydraulic oil; the pipelines include one or more of a first pipeline, a second pipeline, and a third pipeline.

[0010] Preferably, the test unit includes: a test power supply, a core test module, a conditioning module, a communication module, a valve control module, an internal power supply, and a valve signal acquisition module.

[0011] Preferably, the chassis is an integrated waterproof enclosure structure.

[0012] The beneficial effects of the steering proportional valve group test platform provided by the present invention are as follows: Compared with the prior art, the steering proportional valve group test platform provided by the present invention can automatically collect data such as flow rate and automatically control the opening degree of the proportional valve during the valve group test, which greatly improves the test efficiency, accuracy and precision, and reduces the labor intensity of the operator. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 A schematic diagram of the structure of a steering proportioning valve assembly test platform provided in an embodiment of the present invention. Figure 1 ; Figure 2 A schematic diagram of the structure of a steering proportioning valve assembly test platform provided in an embodiment of the present invention. Figure 2 ; Figure 3 A schematic diagram of the structure of a steering proportioning valve assembly test platform provided in an embodiment of the present invention. Figure 3 ; Figure 4 A schematic diagram of the structure of a steering proportioning valve assembly test platform provided in an embodiment of the present invention. Figure 4 ; Figure 5 A schematic diagram of the structure of a steering proportioning valve assembly test platform provided in an embodiment of the present invention. Figure 5 ; Figure 6 This is a schematic diagram of the structure of the central processing unit used in a steering proportioning valve assembly test platform provided in an embodiment of the present invention; Figure 7 A structural block diagram of the test unit used in a steering proportion valve group test platform provided in an embodiment of the present invention; Figure 8This is a test principle diagram of a steering proportion valve group test platform provided in an embodiment of the present invention.

[0015] In the diagram: 1. Central processing unit; 2. Test unit; 21. Test power supply; 22. Core test module; 23. Conditioning module; 24. Communication module; 25. Valve control module; 26. Internal power supply; 27. Valve signal acquisition module; 3. Chassis; 31. Overflow valve assembly; 32. Emergency stop switch; 33. Power supply interface; 34. Oil source interface; 35. Return port; 36. Signal interface; 37. External measurement port; 4. Flow meter head; 5. Test pipeline interface; 6. Pressure gauge head; 7. Gasket. Detailed Implementation

[0016] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0017] Please refer to the following: Figures 1 to 8 This invention provides a test platform for a steering proportioning valve assembly. The test platform includes: a housing 3, a central processing unit 1 housed within the housing 3, and a test unit 2 mounted on the housing 3. The central processing unit 1 and the test unit 2 are electrically connected. A test bench surface is provided on the housing 3. First, the valve assembly to be tested is placed on the test bench surface and fixed. An oil supply hose is used to connect the oil source of the test platform to the oil source of the test site. Using the oil supply hose, the test is performed according to the preset test principle diagram (…). Figure 8 Complete the pipeline connection. After the connection is complete, turn on the main power switch of the test platform and run the test software to complete the test of the valve assembly under test. The central processing unit 1 includes a host, display screen, keyboard and mouse, and is equipped with dedicated software. The central processing unit 1 is responsible for controlling the 24V power supply and synchronously displaying the flow and pressure values.

[0018] As one specific implementation of this invention, please refer to the following: Figures 1 to 7 Test unit 2 includes: test power supply 21, core test module 22, conditioning module 23, communication module 24, valve control module 25, internal power supply 26, and valve signal acquisition module 27.

[0019] In some feasible embodiments, the conditioning module 23 includes: a relay gating conditioning module and / or a valve signal conditioning module.

[0020] In one specific embodiment of the present invention, the chassis 3 is an integrated waterproof enclosure structure. A combing panel is installed on the chassis 3. The combing panel is used to facilitate the placement of the compression cable. Test cables are also provided on the chassis 3.

[0021] In some feasible embodiments, the chassis 3 is equipped with flow meter heads 4, pressure gauge heads 6, test pipeline interfaces 5, overflow valve assemblies 31, pipeline supports, oil inlet interfaces 34, and return ports 35. Specifically, the front panel of the chassis 3 is equipped with three flow meter heads 4, six pressure gauge heads 6, four test pipeline interfaces 5, and four overflow valve assemblies 31. More specifically, please refer to... Figure 3 The left side of the housing 3 features a pipeline support, seven external measurement ports 37 for pressure sensors, an oil inlet port 34, and a return port 35. The overflow valve assembly 31 includes an overflow valve body and an overflow valve block. Two sets of overflow valve assemblies are provided. The overflow valve block is mounted on the housing 3, and the overflow valve body is installed on the overflow valve block. The overflow valve body is used to connect to the product being tested. The two pairs of overflow valve bodies are connected in parallel to a flow meter. The flow meter is connected to a data acquisition module (i.e., an electrical box) via a cable. The data acquisition module is connected to a display module, allowing simultaneous viewing of flow information on a computer and display module. The pressure gauge head 6 displays the collected pressure and flow data.

[0022] In any feasible embodiment, the chassis houses pressure sensors and flow sensors. The pressure sensors are: a first pressure sensor, a second pressure sensor, a third pressure sensor, a fourth pressure sensor, a fifth pressure sensor, and a sixth pressure sensor. The flow sensors are: a first flow sensor, a second flow sensor, and a third flow sensor. Each pressure sensor corresponds one-to-one with a pressure gauge head 6. Each flow sensor corresponds one-to-one with a flow meter head 4. The pressure sensors are used to connect to the pressure testing connectors on the product.

[0023] In any feasible embodiment, please refer to Figure 2 An emergency stop switch 32 is located on the right side of chassis 3. Emergency stop switch 32 serves as the power switch and emergency stop position for the equipment. A power supply interface 33 is also located on the right side of chassis 3. Power supply interface 33 connects to an aviation connector for 220V power supply. The aviation connector is used to connect pressure sensors and / or drive interfaces and / or valve power supply interfaces. The aviation connector includes power supply connectors and signal connectors. The cable on the signal connector is a 1-to-7 branch cable, used to connect one pressure sensor, four PWM drive interfaces, and two valve power supply interfaces on the product. In any feasible embodiment, the signal connector uses Y50X-1419ZK10. The 220V power supply connector uses Y2M-3ZJ.

[0024] The right side of chassis 3 features a support arm with pre-drilled holes for cable management. The support arm only requires drilling holes according to the dimensions to install the base; the installation of the stand, monitor, keyboard, mouse, etc., is the responsibility of the client. The cable management holes are 50mm in diameter and are intended for VGA, power, and USB cables, and will accommodate cable retractors.

[0025] In some feasible embodiments, a double door is installed at the rear of the chassis 3 to facilitate installation, maintenance, and waste oil cleaning. The interior of the chassis 3 uses stainless steel piping, with aviation hydraulic oil as the medium, a maximum operating pressure of 20 MPa, and a maximum operating flow rate of 60 L / min. The piping includes a first pipe, a second pipe, and a third pipe. Specifically, First pipeline: Oil port 1 is the oil inlet, connected in series with the first flow meter and then connected to product port P; Second pipeline: After the second flow meter is connected in series with panel A1, a set of overflow valve assembly 31 is connected in parallel to the pipeline and then connected in series with panel B1; Third pipeline: After the third flow meter is connected in series with panel A2, another set of overflow valve assembly 31 is connected in parallel to the pipeline and then connected in series with panel B2; A digital display instrument is mounted on the side panel of chassis 3. The digital display shows the readings on its digital tubes; the panel lights up upon power-up and displays the initial values. Chassis 3 also features a nine-channel digital display instrument on its side panel, used to display the real-time values ​​from six pressure sensors and three flow sensors. It should be noted that panels A1, B1, A2, and B2 are interfaces on the product under test.

[0026] The chassis 3 houses the central processing unit 1 and the electrical box (i.e., the data acquisition module). Both the central processing unit 1 and the electrical box have left and right outgoing cables. Chassis 3 contains three types of valve blocks, which are fixedly installed inside the cabinet and / or on top. These are made of nickel-plated 45# steel. They are a flow meter valve block, an overflow valve block, and a pressure sensor mounting valve block.

[0027] As one specific implementation of this invention, please refer to the following: Figures 1 to 6 The central processing unit 1 uses an embedded industrial computer with an Intel i5-3427U processor, 4GB of DDR memory, and a 240GB solid-state drive, providing a reliable and high-performance computer platform. It connects to the core ARM board via a network interface and runs on Windows 7. The software allows for setting control and data acquisition, as well as recording and printing reports.

[0028] A method for using a steering proportioning valve assembly test platform includes the following steps: First, place the valve assembly to be tested onto the pad 7 on the test bench surface and secure it. Connect the oil source of the test bench to the oil source of the test site using an oil hose. Complete the pipeline connection according to the test schematic diagram using the oil hose.

[0029] First, connect the power supply cable, then connect the test signal cable according to the test schematic. After connection, turn on the main power switch on the right side of the test bench. The system will automatically start and run the test software. Check if the digital display is displaying correctly. After startup, the system will display the main software interface, where you can perform manual control and automatic testing of the fixture.

[0030] According to the technical requirements, tests are conducted. During the test, pressure and flow information will be automatically generated in the test report folder as an Excel file with the specified name, and the required curves and other data will also be automatically generated.

[0031] This invention provides a steering proportional valve assembly test platform, which, compared with existing technologies, can automatically collect data such as flow rate and automatically control the opening of the proportional valve during valve assembly testing. The steering proportional valve assembly test platform provided by this invention allows for automatic voltage output by setting starting voltage, ending voltage, and step voltage via software; it changes the opening of the proportional valve by varying the voltage, and simultaneously automatically records the data collected by the data acquisition device to a designated location in the software. This invention targets the field of valve assembly testing, using LabVIEW Professional Edition as the host computer software development platform, which features a graphical user interface for development and data collection. The computer automatically loads, collects, and controls relevant parameters, automatically generates and prints the required curves, and produces a test analysis report.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A test platform for a steering proportioning valve assembly, characterized in that, include: The chassis (3) is equipped with a test bench surface; The central processing unit (1) is located inside the chassis (3); The test unit (2) is mounted on the chassis (3); the central processing unit (1) is electrically connected to the test unit (2); Place the valve assembly under test on the test bench and fix it in place; use an oil hose to connect the oil source of the test platform to the oil source of the test site; use the oil hose to complete the pipeline connection according to the preset test principle diagram; After the connection is complete, turn on the main power switch of the test platform and run the test software to complete the test of the valve group under test.

2. The steering proportioning valve assembly test platform as described in claim 1, characterized in that: The chassis (3) is equipped with a flow meter head (4), a pressure meter head (6), a test pipeline interface (5), an overflow valve assembly (31), an oil inlet interface (34), a return port (35), and an external measurement port (37).

3. The steering proportioning valve assembly test platform as described in claim 2, characterized in that: The overflow valve assembly (31) includes an overflow valve body and an overflow valve block; the overflow valve block is disposed on the housing (3), and the overflow valve body is installed on the overflow valve block.

4. The steering proportioning valve assembly test platform as described in claim 3, characterized in that: The chassis is equipped with a pressure sensor and a flow sensor; the pressure sensor corresponds one-to-one with the pressure gauge head (6); the flow sensor corresponds one-to-one with the flow meter head (4).

5. The steering proportioning valve assembly test platform as described in claim 4, characterized in that: The chassis (3) is equipped with a support arm.

6. The steering proportioning valve assembly test platform as described in claim 5, characterized in that: The chassis (3) is equipped with pipelines, and the medium in the pipelines is aviation hydraulic oil; the pipelines include one or more of the first pipeline, the second pipeline and the third pipeline.

7. The steering proportioning valve assembly test platform as described in claim 1, characterized in that: The test unit (2) includes: a test power supply (21), a core test module (22), a conditioning module (23), a communication module (24), a valve control module (25), an internal power supply (26), and a valve signal acquisition module (27).

8. The steering proportioning valve assembly test platform as described in any one of claims 1-7, characterized in that: The chassis (3) is an integrated waterproof chassis structure.

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