Electro-hydraulic pressure servo valve testing equipment

Abstract

The utility model discloses electro-hydraulic pressure servo valve testing equipment, which comprises a main body mechanism, the main body mechanism comprises a base, clamping seats symmetrically arranged on the base, communicating pipes fixed to one sides of the clamping seats, a driving piece installed in an inner cavity of the base and penetrating through the clamping seats, a pump fixed to one side of the base, a transparent hose with one end connected with the communicating pipes on one side and the other side connected with the inner cavity of the base, and an electric heating pipe installed on one side of the base and stretching into the base. The temperature sensor is installed on the other side of the base and extends into the base, the control panel is installed on the outer side face of the base, the base is used for installing other assemblies, the clamping seat is used for clamping and fixing the servo valve, and the stability of the servo valve during testing is guaranteed; the clamping seat comprises a clamping plate movably arranged at the top end of the base, a rubber cushion layer fixed to one side of the clamping plate and a threaded sleeve fixed to the bottom end of the clamping plate, and the electro-hydraulic pressure servo valve testing equipment has the advantages that the servo valve is fast and convenient to fix, and testing is comprehensive.

Description

Technical Field

[0001] The utility model relates to the technical field of servo valve testing equipment, in particular to an electro-hydraulic pressure servo valve testing equipment. Background Technique

[0002] The servo valve mainly refers to the electro-hydraulic servo valve. After receiving the electrical analog signal, it correspondingly outputs the modulated flow rate and pressure. It is both an electro-hydraulic conversion element and a power amplification element. It can convert the weak electrical input signal with small power into the hydraulic energy (flow rate and pressure) with large power output. In the electro-hydraulic servo system, it connects the electrical part and the hydraulic part to realize the conversion of electro-hydraulic signals and hydraulic amplification. The electro-hydraulic servo valve is the core of the electro-hydraulic servo system control. During the production process of the servo valve, it is necessary to test the servo valve to ensure the quality of the servo valve.

[0003] The existing electro-hydraulic pressure servo valve testing equipment mainly has the following disadvantages during use: it is troublesome to fix during the servo valve testing process, and it is difficult to fix servo valves of different sizes. In addition, there is a lack of testing on the stability of the servo valve in different temperature media. Therefore, there is room for improvement. Content of the Utility Model

[0004] The utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0005] For this reason, the technical solution adopted by the utility model is as follows: an electro-hydraulic pressure servo valve testing equipment, including: a main body mechanism, the main body mechanism includes a base, clamping seats symmetrically arranged on the base, a communication pipe fixed on one side of the clamping seat, a driving member installed in the inner cavity of the base and passing through the clamping seat, a pump machine fixed on one side of the base, a transparent hose with one end connected to one communication pipe and the other end connected to the inner cavity of the base, an electric heating pipe installed on one side of the base and extending into the base, a temperature sensor installed on the other side of the base and extending into the base, and a control panel installed on the outer side surface of the base.

[0006] A cavity is formed inside the base. One end of the pump machine is communicated with the cavity through a water inlet pipe, and the other end is connected to the communication pipe through a water outlet pipe.

[0007] In a preferred example, the utility model can be further configured as: the clamping seat includes a clamping plate movably arranged at the top of the base, a rubber cushion layer fixed on one side of the clamping plate, and a threaded sleeve fixed at the bottom of the clamping plate.

[0008] In a preferred example, the utility model can be further configured as: a groove is formed at the top of the base. The driving member includes a threaded rod rotatably installed in the groove and a motor installed on one side of the base with its shaft fixedly connected to the end of the threaded rod. The threaded sleeve is slidably fitted in the groove, and the threaded rod passes through the threaded sleeve and meshes with the threaded sleeve.

[0009] In a preferred example, the present utility model can be further configured as follows: the communicating pipe includes a pipe body fixed to one side of the clamping plate and a flow sensor installed on the pipe body.

[0010] In a preferred example, the present utility model can be further configured as follows: a flow channel penetrating the clamping plate is opened on the clamping plate, one end of the flow channel extends out through the rubber cushion layer, and the other end is communicated with the pipe body.

[0011] In a preferred example, the present utility model can be further configured as follows: the output ends of the flow sensor and the temperature sensor are electrically connected to the input end of the control panel through wires.

[0012] By adopting the above technical solutions, the beneficial effects obtained by the present utility model are as follows:

[0013] 1. In the present utility model, a base is provided, and clamping seats are symmetrically arranged on the base. At the same time, a driving member is provided on the base, and the clamping seats are driven by the driving member to perform clamping. Through the above settings, when testing the servo valve, only need to place the servo valve above the base. At this time, the driving member drives the clamping seats to clamp and fix the servo valve, effectively increasing the convenience of fixing during the servo valve testing process, and being applicable to servo valves of different sizes. In addition, communicating pipes are installed on both sides of the clamping seats. The communicating pipe on one clamping seat is communicated with the pump, and the communicating pipe on the other clamping seat is communicated with the inner cavity of the base through a transparent hose. Through the above settings, the flow control accuracy of the servo valve can be accurately tested, increasing the practical performance.

[0014] 2. In the present utility model, an electric heating pipe extending into the inner cavity of the base is installed on one side of the base, and a temperature sensor extending into the inner cavity of the base is installed on the other side of the base. Through the above settings, the test medium in the inner cavity of the base can be heated, thereby facilitating the test of the stability of the servo valve when operating with different temperature media, and further increasing the comprehensiveness of the test data. Description of the Drawings

[0015] Figure 1 is a schematic structural diagram of the present utility model;

[0016] Figure 2 is a schematic bottom structural diagram of the present utility model;

[0017] Figure 3 is a schematic sectional view of the present utility model;

[0018] Figure 4 is an exploded structural diagram of the present utility model.

[0019] Reference Signs:

[0020] 100, Main body mechanism; 110, Base; 111, Groove; 112, Cavity; 120, Clamping seat; 121, Clamping plate; 122, Rubber cushion layer; 123, Threaded sleeve; 130, Connecting pipe; 131, Pipe body; 132, Flow sensor; 140, Driving member; 141, Threaded rod; 142, Motor; 150, Pump; 151, Inlet pipe; 152, Outlet pipe; 160, Transparent hose; 170, Electric heating pipe; 180, Temperature sensor; 190, Control panel. Detailed implementation mode

[0021] To make the purpose, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in combination with the specific implementation modes and with reference to the accompanying drawings. It should be noted that, without conflict, the embodiments of the present utility model and the features in the embodiments can be combined with each other.

[0022] Some embodiments of the present utility model will be described below with reference to the accompanying drawings.

[0023] Embodiment 1:

[0024] Combined with Figures 1-4 As shown, this embodiment provides a test device for an electro-hydraulic pressure servo valve, including: a main body mechanism 100.

[0025] Among them, the main body mechanism 100 includes a base 110, clamping seats 120 symmetrically arranged on the base 110, a connecting pipe 130 fixed on one side of the clamping seat 120, a driving member 140 installed in the inner cavity of the base 110 and passing through the clamping seat 120, a pump 150 fixed on one side of the base 110, a transparent hose 160 with one end connected to one side of the connecting pipe 130 and the other end connected to the inner cavity of the base 110, an electric heating pipe 170 installed on one side of the base 110 and extending into the base 110, a temperature sensor 180 installed on the other side of the base 110 and extending into the base 110, and a control panel 190 installed on the outer side surface of the base 110.

[0026] The base 110 is used to install other components, and the clamping seat 120 is used to clamp and fix the servo valve to ensure the stability of the servo valve during testing. The clamping seat 120 includes a clamping plate 121 movably arranged at the top of the base 110, a rubber cushion layer 122 fixed on one side of the clamping plate 121, and a threaded sleeve 123 fixed at the bottom of the clamping plate 121. The clamping plate 121 is used to clamp the servo valve, and the rubber cushion layer 122 can ensure the sealing between the clamping plate 121 and the servo valve. In addition, a flow channel penetrating the clamping plate 121 is opened on the clamping plate 121, and one end of the flow channel extends out through the rubber cushion layer 122, facilitating the feeding or discharging of the test medium through the flow channel into or out of the servo valve during testing.

[0027] A groove 111 is formed at the top of the base 110. The driving member 140 includes a threaded rod 141 rotatably installed in the groove 111 and a motor 142 installed on one side of the base 110 with its shaft fixedly connected to the end of the threaded rod 141. Meanwhile, the threaded sleeve 123 is slidably fitted in the groove 111, and the threaded rod 141 passes through the threaded sleeve 123 and meshes with it. When the motor 142 is started, it drives the threaded rod 141 to rotate. The rotation of the threaded rod 141 drives the threaded sleeves 123 on both sides to move towards each other, that is, drives the clamping plates 121 to move towards each other to clamp and fix the servo valve.

[0028] The connecting pipe 130 is used to send in or send out the medium, and includes a pipe body 131 fixed on one side of the clamping plate 121 and a flow sensor 132 installed on the pipe body 131. The flow sensor 132 is used to accurately monitor the flow rate of the test medium passing through the pipe body 131.

[0029] A cavity 112 is formed inside the base 110 for storing the test medium. One end of the pump 150 is connected to the cavity 112 through a water inlet pipe 151, and the other end is connected to the pipe body 131 on one side of the clamping plate 121, which is convenient for pumping out the test medium in the cavity 112 and pumping it into the pipe body 131 through the water outlet pipe 152, and then entering the servo valve through the pipe body 131 for testing.

[0030] The pipe body 131 on the other clamping plate 121 is connected to the cavity 112 through a transparent hose 160, which is convenient for sending the test medium passing through the servo valve back to the cavity 112 to form a cycle.

[0031] The electric heating pipe 170 is used to heat the test medium in the cavity 112 inside the base 110, which is convenient for testing the stability of the servo valve when operating with different temperature media. The temperature sensor 180 is used to monitor the temperature of the test medium.

[0032] The control panel 190 is used to display the monitoring data of the flow sensor 132 and the temperature sensor 180, and is convenient for the tester to control each component.

[0033] Working principle and usage process of the utility model: When in use, place the servo valve on the top of the base 110. Start the motor 142, which drives the threaded rod 141 to rotate. The rotation of the threaded rod 141 drives the thread sleeve 123 to move towards each other. The movement of the thread sleeve 123 drives the clamping plate 121 to move, clamping and fixing the servo valve. At the same time, the flow channel inside one clamping plate 121 is aligned with the inlet of the servo valve, and the flow channel on the other clamping plate 121 is aligned with the outlet of the servo valve. At this time, start the pump 150. When the pump 150 starts, it pumps out the test medium in the inner cavity 112 of the base 110 through the water inlet pipe 151, and pumps it into the pipe body 131 on one clamping plate 121 through the water outlet pipe 152. Then, it enters the servo valve through the flow channel on the clamping plate 121, and is sent out from the outlet inside the servo valve, enters the transparent hose 160 through the flow channel and the pipe body 131 on the other clamping plate 121, and then is sent back to the inner cavity 112 of the base 110. During the circulation process, the flow sensors 132 on the two pipe bodies 131 monitor the flow before and after the servo valve. According to the monitoring results, it can be judged whether the flow control of the servo valve is accurate. In addition, during the test, start the electric heating tube 170 to heat the test medium in the inner cavity 112 of the base 110, and then the stability of the servo valve during operation with different temperature media can be tested.

[0034] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. An electro-hydraulic pressure servo valve testing device, comprising: The main body mechanism (100) is characterized in that the main body mechanism (100) comprises a base (110), a clamping seat (120) symmetrically arranged on the base (110), a connecting pipe (130) fixed on one side of the clamping seat (120), a driving member (140) installed in the inner cavity of the base (110) and passing through the clamping seat (120), a pump (150) fixed on one side of the base (110), a transparent hose (160) having one end connected to one side of the connecting pipe (130) and the other side connected to the inner cavity of the base (110), an electric heating pipe (170) installed on one side of the base (110) and extending into the base (110), a temperature sensor (180) installed on the other side of the base (110) and extending into the base (110), and a control panel (190) installed on the outer surface of the base (110); A cavity (112) is formed inside the base (110); one end of the pump (150) is connected to the cavity (112) via a water inlet pipe (151), and the other end is connected to the connecting pipe (130) via a water outlet pipe (152).

2. The electro-hydraulic pressure servo valve testing device according to claim 1, characterized in that: The clamping seat (120) comprises a clamping plate (121) movably arranged on the top end of the base (110), a rubber cushion layer (122) fixed on one side of the clamping plate (121), and a threaded sleeve (123) fixed on the bottom end of the clamping plate (121).

3. The electro-hydraulic pressure servo valve testing device according to claim 2, characterized in that: The top of the base (110) is provided with a groove (111), the driving member (140) comprises a threaded rod (141) rotatably mounted in the groove (111), and a motor (142) mounted on one side of the base (110) and having a shaft fixedly connected to the end of the threaded rod (141), the threaded sleeve (123) being slidably engaged in the groove (111), and the threaded rod (141) passing through the threaded sleeve (123) and meshing with the threaded sleeve (123).

4. The electro-hydraulic pressure servo valve testing device according to claim 2, characterized in that: The connecting pipe (130) comprises a pipe body (131) fixed to one side of the clamping plate (121) and a flow sensor (132) mounted on the pipe body (131).

5. The electro-hydraulic pressure servo valve testing device according to claim 2, characterized in that: The clamping plate (121) is provided with a flow channel penetrating the clamping plate (121), one end of the flow channel passes through the rubber cushion layer (122) and extends out, and the other end is communicated with the tube body (131).

6. The electro-hydraulic pressure servo valve testing device according to claim 4, characterized in that: The output ends of the flow sensor (132) and the temperature sensor (180) are electrically connected to the input end of the control panel (190) via electric wires.

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