An electro-hydraulic servo valve simulation test device

Abstract

The utility model discloses an electro -hydraulic servo valve simulation test device relates to valve related technical field. The utility model discloses a support platform, the intercommunication bin and servo motor, the top central of support platform is provided with the opening, the bottom rotation is connected with the shaft in the opening, the top of support platform is provided with servo motor, and the three vertical surfaces of support platform outside all are provided with the intercommunication mouth, and the vertical surface of support platform outside every intercommunication mouth all is fixed with the intercommunication bin, and the intercommunication bin is communicated with the intercommunication mouth. The utility model discloses through setting up support platform, the intercommunication bin and servo motor, have solved electro -hydraulic servo valve simulation test device and produced stronger water hammer effect, and determine the problem that no -load output pressure is not enough convenient, and the advantage of this electro -hydraulic servo valve simulation test device is: the influence of water hammer effect is smaller in electro -hydraulic servo valve simulation test device work, and determines no -load output pressure more convenient.

Description

Technical Field

[0001] This utility model belongs to the field of valve-related technology, and in particular relates to an electro-hydraulic servo valve simulation test device. Background Technology

[0002] The electro-hydraulic servo valve simulation test device is a highly specialized integrated system, mainly used to accurately simulate the real working conditions of servo valves in a laboratory environment, and to perform high-precision measurement and evaluation of their static and dynamic performance. This device is widely used in key aspects of electro-hydraulic servo valve research and development, production, quality inspection, and maintenance. However, the electro-hydraulic servo valve simulation test device still has the following drawbacks in practical use: In the simulation test of the electro-hydraulic servo valve, the test liquid is directly input into and output into the servo valve. During operation, the opening and closing of the valve will cause a strong water hammer effect, which will damage the test equipment and affect the accuracy of the test. Secondly, during operation, the output pipeline of the electro-hydraulic servo valve simulation test device is under load. Changes in load will cause changes in the delivery pressure, affecting the electromagnetic servo valve test. Compared with the no-load condition, it is necessary to use an additional valve to connect the bypass pipeline, which is not convenient for delivery. Utility Model Content

[0003] The purpose of this invention is to provide an electro-hydraulic servo valve simulation test device. By setting up a support platform, a connecting chamber, and a servo motor, it solves the problems of strong water hammer effect and inconvenience in determining the no-load output pressure in electro-hydraulic servo valve simulation test devices.

[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model relates to an electro-hydraulic servo valve simulation test device, comprising a support platform, a connecting chamber, and a servo motor. The support platform has an opening at its top center, with a rotating shaft rotatably connected to the bottom of the opening. A servo motor is mounted at the top of the support platform. Three connecting ports are located on the three vertical surfaces outside the support platform, and a connecting chamber is fixed to the vertical surface of the support platform outside each connecting port. The connecting chamber communicates with the connecting port. The opening at the top center of the support platform accommodates a liquid circuit control component and facilitates liquid transfer. A rotating plate and a sealing strip are connected to the bottom of the opening via a rotating shaft to control the liquid flow direction. Three connecting ports are located on the outer side of the support platform, each connected to a connecting chamber for connecting to external pipelines. A servo motor is mounted at the top of the support platform to power the rotating shaft.

[0005] Furthermore, a base bracket is fixed to the bottom of the support platform, and the connecting port is connected to the opening. The bottom of the support platform is fixed to the working surface by the base bracket to maintain stability, and the connecting port is directly connected to the internal opening to form a liquid passage.

[0006] Furthermore, rotating plates are symmetrically fixed around the circumference of the rotating shaft, and sealing strips are fixed at the ends of the two rotating plates away from the rotating shaft. The sealing strips are abutted and set inside the opening. Rotating plates are symmetrically installed on both sides of the rotating shaft, and sealing strips are fixed at their ends. When rotating, the sealing strips are tightly attached to the inner wall of the opening, which can close the designated connection port, thereby realizing the isolation and switching between liquid circuits.

[0007] Furthermore, a connector is fixedly connected to the upper part of the connecting chamber on the side away from the support platform. A pressure sensor is fixedly installed inside the connecting chamber below the connector. Each connecting chamber has a connector on its upper part for connecting to input, output or return pipelines. A pressure sensor is installed below it to monitor the pressure of the liquid flowing through it.

[0008] Furthermore, a sealing plate is fixed to the bottom of the servo motor, the output shaft of the servo motor passes through the sealing plate and a rotating block is fixed to the bottom end, the sealing plate is fixed to the top of the support platform, the bottom of the servo motor is fixed to the top of the support platform through the sealing plate, the sealing plate also closes the opening, and the motor output shaft is connected to the rotating block for transmitting torque.

[0009] Furthermore, the top center of the rotating shaft has an insertion port, and the rotating block is inserted into the insertion port. The rotating shaft, rotating plate, and sealing strip all abut against the bottom of the sealing plate. The top of the rotating shaft has an insertion port that is inserted into the rotating block. The servo motor drives the rotating block to rotate the rotating shaft, thereby controlling the position of the rotating plate and the sealing strip to achieve liquid circuit on / off control.

[0010] This utility model has the following beneficial effects: This invention solves the problem of strong water hammer effect in electro-hydraulic servo valve simulation test devices by setting up a support platform, a connecting chamber, and a servo motor. The liquid is transported from the opening of the support platform to the output connecting port, then to the connecting chamber, and finally to the output pipeline. Pressure changes during liquid transport are detected by a pressure sensor. After the detection is completed, the servo motor is restarted to drive the rotating plate and sealing strip to reset. When changing the output connector, the input connector is connected to at least the return or output connector, making the electro-hydraulic servo valve simulation test device less prone to water hammer effect and more convenient to operate.

[0011] This invention solves the problem of inconvenient no-load output pressure determination in liquid servo valve simulation test devices by setting up a support platform and a connecting chamber. Liquid is transported to the connecting chamber through the input liquid pipeline, then through the connecting chamber to the connecting port of the support platform, and then transferred to the connecting chamber through another connecting port of the support platform. Finally, it is output to the connector connected to the return pipeline and transported to the return pipeline. The flow pressure of the liquid is observed on the pressure sensors below the two working connectors, reducing interference from other factors and making it more convenient to determine the initial pressure. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 A three-dimensional view of the assembly structure of an electro-hydraulic servo valve simulation test device; Figure 2 This is a three-dimensional structural diagram of the support platform; Figure 3 This is a three-dimensional view of the structure after the rotating shaft, rotating plate, and base support are assembled. Figure 4 This is a three-dimensional structural diagram of the connected compartment; Figure 5 This is a three-dimensional view of the servo motor from below.

[0014] Figure label: 1. Support platform; 101. Opening; 102. Rotating shaft; 1021. Insertion port; 103. Rotating plate; 104. Sealing strip; 105. Base bracket; 106. Connecting port; 2. Connecting compartment; 201. Connector; 202. Pressure sensor; 3. Servo motor; 301. Sealing plate; 302. Rotating block. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model. Specific Implementation Example 1

[0016] Please see Figure 1-4This utility model is an electro-hydraulic servo valve simulation test device, including a support platform 1, a connecting chamber 2, and a servo motor 3. The support platform 1 has an opening 101 at the center of its top, in which the liquid circuit control part is placed. The opening 101 accommodates the components that control the liquid circuit and transfers the liquid. A rotating shaft 102 is rotatably connected to the bottom of the opening 101. When the rotating shaft 102 rotates, it drives the rotating plate 103 and the sealing strip 104. The servo motor 3 is set at the top of the support platform 1, and the servo motor 3 generates the power to drive the rotating shaft 102. Connecting ports 106 are opened on the three vertical surfaces on the outside of the support platform 1. The support platform 1 transfers the liquid in the opening 101 to the connecting chamber 2 through the connecting ports 106. A connecting chamber 2 is fixed on the vertical surface of the support platform 1 outside each connecting port 106. The connecting chamber 2 connects the connector 201 and the pressure sensor 202 to it and communicates with the external liquid delivery circuit. The connecting chamber 2 is connected to the connecting port 106.

[0017] Specifically, the bottom of the support platform 1 is fixed with a base bracket 105, and the connecting port 106 is connected to the opening 101. The support platform 1 is supported and set on the working plane by the base bracket 105.

[0018] Furthermore, rotating plates 103 are symmetrically fixed around the circumference of the rotating shaft 102. A sealing strip 104 is fixed to the end of each rotating plate 103 away from the rotating shaft 102. The sealing strip 104 is abutted and disposed in the opening 101. It is movably connected in the opening 101 through the two rotating plates 103 and the sealing strip 104. A communication port 106 is closed by the rotating plates 103, which closes the communication port 106 with the other two communication ports 106 in the support platform 1.

[0019] Furthermore, a connector 201 is fixedly connected to the upper part of the connecting chamber 2 on the side away from the support platform 1. A pressure sensor 202 is fixedly installed inside the connecting chamber 2 below the connector 201. The connector 201 connects and connects the pipelines for input, output and return liquids to the connecting chamber 2. The pressure sensor 202 measures the pressure of the liquid passing through the connecting chamber 2.

[0020] The operation process of this embodiment is as follows: During operation, the pipelines for external input liquid, output liquid, and return liquid are first connected to the connectors 201 on the three connecting chambers 2 respectively. The servo motor 3 is started, and the servo motor 3 drives the rotating shaft 102 to rotate until the rotating shaft 102 rotates to close the output liquid pipeline. Then, the liquid is transported to the connecting chamber 2 through the input liquid pipeline, and then through the connecting chamber 2 to the connecting port 106 of the support platform 1, entering the opening 101 of the support platform 1. It is then transferred through another connecting port 106 of the support platform 1 to the connecting chamber 2, output to the connector 201 connected to the return pipeline connector, and transported to the return pipeline. The flow pressure of the liquid is observed on the pressure sensors 202 below the two working connectors 201 to determine the initial pressure and reduce interference from other factors. Specific Implementation Example 2

[0021] Please see Figure 1-5 Based on the first specific embodiment, a sealing plate 301 is fixed to the bottom of the servo motor 3, the output shaft of the servo motor 3 passes through the sealing plate 301 and a rotating block 302 is fixed to the bottom end, the sealing plate 301 is fixed to the top of the support platform 1, and the opening 101 of the support platform 1 is closed by sealing and fixing the top of the support platform 1 through the sealing plate 301, and the servo motor 3 is supported and set on the support platform 1.

[0022] Specifically, a socket 1021 is provided at the center of the top of the rotating shaft 102, and the rotating block 302 is inserted into the socket 1021. The rotating shaft 102, the rotating plate 103 and the sealing strip 104 all abut against the bottom of the sealing plate 301. The rotating shaft 102 is movably connected to the rotating block 302 through the socket 1021. When the servo motor 3 drives the rotating block 302 to rotate, it drives the rotating shaft 102 to rotate.

[0023] The operation process of this embodiment is as follows: During operation, the servo motor 3 is started to drive the rotating block 302 to rotate. In the rotation of the rotating block 302, the rotating shaft 102 is driven to rotate, so that the two rotating plates 103 and the sealing strip 104 on the periphery of the rotating shaft 102 rotate until the two rotating plates 103 and the sealing strip 104 rotate to the connection port 106 corresponding to the return pipeline and block it. This allows the liquid to be transported from the opening 101 of the support platform 1 to the output connection port 106, and then to the connecting chamber 2. Through the connecting chamber 2, it is transported to the output pipeline. The pressure sensor 202 detects the pressure change in the liquid transport. After the detection is completed, the servo motor 3 is restarted to drive the rotating plate 103 and the sealing strip 104 to reset. When changing the output connector 201, the input connector 201 is connected to the return or output connector 201 at least to reduce the water hammer effect.

[0024] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0025] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An electro-hydraulic servo valve simulation test device, comprising a support platform (1), a connecting chamber (2), and a servo motor (3), characterized in that: An opening (101) is provided at the center of the top of the support platform (1). A rotating shaft (102) is rotatably connected to the bottom of the opening (101). A servo motor (3) is provided at the top of the support platform (1). A connecting port (106) is provided on each of the three vertical surfaces outside the support platform (1). A connecting compartment (2) is fixed on the vertical surface of the support platform (1) outside each connecting port (106). The connecting compartment (2) is connected to the connecting port (106).

2. The electro-hydraulic servo valve simulation test device according to claim 1, characterized in that: The bottom of the support platform (1) is fixed with a base bracket (105), and the connecting port (106) is connected to the opening (101).

3. The electro-hydraulic servo valve simulation test device according to claim 1, characterized in that: Rotating plates (103) are symmetrically fixed around the circumference of the rotating shaft (102). A sealing strip (104) is fixed at one end of each of the two rotating plates (103) away from the rotating shaft (102). The sealing strip (104) is abutted and disposed in the opening (101).

4. The electro-hydraulic servo valve simulation test device according to claim 1, characterized in that: The upper part of the connecting chamber (2) away from the support platform (1) is fixedly connected to a connector (201), and a pressure sensor (202) is fixedly installed inside the connecting chamber (2) below the connector (201).

5. The electro-hydraulic servo valve simulation test device according to claim 3, characterized in that: The bottom of the servo motor (3) is fixed with a sealing plate (301), the output shaft of the servo motor (3) passes through the sealing plate (301) and a rotating block (302) is fixed at the bottom end, and the sealing plate (301) is fixed on the top of the support platform (1).

6. The electro-hydraulic servo valve simulation test device according to claim 5, characterized in that: The top center of the rotating shaft (102) has an insertion port (1021), the rotating block (302) is inserted into the insertion port (1021), and the rotating shaft (102), rotating plate (103) and sealing strip (104) all abut against the bottom of the sealing plate (301).

Images