A kind of electric actuator sealing performance testing device

Abstract

The utility model relates to electric actuator sealing performance test technical field especially is a kind of electric actuator sealing performance testing device, including test board and electric actuator ontology, test board is provided with test mechanism and is used to carry out sealing performance test to electric actuator ontology, test mechanism includes: station subassembly, is set up on test board and is used to load and circulate electric actuator ontology;Positioning assembly is set up on test board and is used to fix electric actuator ontology on station subassembly;Implementation component includes the linear module of being fixed in test board top rear end, the sliding member of linear module is fixed with sliding seat, and the plug is fixed in the inside front end of sliding seat;Realized the automation and intelligentization of sealing performance test, greatly promoted the detection efficiency and consistency, and simultaneously ensured the reliability of determination result through accurate pressure monitoring, effectively guaranteed product quality.

Description

Technical Field

[0001] This utility model relates to the field of electric actuator sealing performance testing technology, specifically an electric actuator sealing performance testing device. Background Technology

[0002] In modern industrial automation systems, electric actuators, as key control terminal devices, are widely used in the driving and control of equipment such as valves and dampers. According to CN223597105U, a device for testing the sealing performance of an electric actuator is disclosed. This technology includes a base plate; a vertical plate is fixedly connected to the top surface of the base plate; a pressurizing assembly is installed on the top surface of the vertical plate; an auxiliary testing mechanism is installed on one side of the vertical plate; an actuator housing is placed on the top surface of the auxiliary testing mechanism; a threaded interface is fixedly connected to the outer surface of the actuator housing; a water tank is fixedly connected to the top surface of the base plate and below the auxiliary testing mechanism; the auxiliary testing mechanism includes protrusions; protrusions are fixedly connected to one side of the vertical plate; a lifting hydraulic rod is fixedly connected to the bottom surface of the protrusions; a clamping and positioning assembly is connected to the output end of the lifting hydraulic rod; the actuator housing is placed on the top surface of the clamping and positioning assembly; and a docking assembly is installed on the top surface of the clamping and positioning assembly. This technology achieves the technical effect of "testing the sealing performance of the actuator housing through the cooperation of the pressurizing assembly, the auxiliary testing mechanism, and the water tank." Because key steps such as workpiece positioning, test interface docking, and air circuit opening and closing are completed by simple, independent, and unintegrated mechanisms or manual valves, there are gaps and cumulative errors between the steps. As a result, the final fixed state of the actuator, the formation conditions of the sealing interface, and the starting point of pressure application cannot be accurately reproduced in each test. This ultimately results in discrete pressure monitoring data, low reproducibility, and the inability to establish a stable and reliable sealing judgment standard. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides an electric actuator sealing performance testing device, which realizes the automation and intelligence of sealing performance testing, greatly improves testing efficiency and consistency, and ensures the reliability of the judgment results through precise pressure monitoring, effectively guaranteeing product quality.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an electric actuator sealing performance testing device, comprising a test bench and an electric actuator body, wherein a testing mechanism is provided on the test bench for testing the sealing performance of the electric actuator body, and the testing mechanism includes: The workstation assembly is set on the test bench and is used for loading and transferring the electric actuator body; A positioning component is set on the test bench and used to fix the electric actuator body on the workstation component; The execution component includes a linear module fixed to the rear end of the top of the test bench. A slide block is fixed on the sliding part of the linear module. A plug is fixed to the front end inside the slide block. A three-way pipe is fixed to the rear end of the plug. A pressure gauge is fixed to the upper end of the three-way pipe.

[0005] Preferably, the actuation component further includes an electric valve connected to the rear end of the tee pipe, the other end of which is connected to a connector for connecting to a gas source device via a hose.

[0006] Preferably, the workstation assembly further includes a cam divider fixed to the front end of the top of the test bench, a turntable fixed to the output end above the cam divider, and three circumferentially arranged tooling fixtures fixed to the top of the turntable for positioning the electric actuator body.

[0007] Preferably, the positioning component further includes a gantry frame fixed in the middle of the top of the test bench. A vertical frame is fixed at the upper end of the gantry frame, a slide is slidably installed at the front end of the vertical frame, a horizontal plate is fixed at the lower end of the slide, and positioning heads are fixed on both the left and right sides of the lower end of the horizontal plate. A cylinder is installed at the upper end of the vertical frame and is used to drive the slide to lift.

[0008] Preferably, the front end of the plug is provided with a sealing ring, and the shape of the plug matches the interface of the electric actuator body.

[0009] Preferably, the tooling fixture has a contoured groove that matches the shape of the lower end of the electric actuator body.

[0010] Beneficial effects This invention provides a device for testing the sealing performance of electric actuators. Compared with the prior art, it has the following advantages: 1. After the positioning component fixes the electric actuator body, the linear module drives the slide and the plug fixed at its front end to move forward, so that the plug is inserted into the cable interface or reserved test port of the electric actuator body and forms a reliable seal. At this time, the rear end of the three-way pipe is connected to an electric valve for controlling the air circuit. The other end of the electric valve is connected to an external air source device such as an air compressor or nitrogen cylinder through a connector. After the test starts, the electric valve is opened to fill the actuator with gas at a stable pressure. At the same time, the pressure gauge installed on the upper end of the three-way pipe monitors and displays the pressure value in the actuator cavity in real time. During the pressure holding stage, by observing whether the pressure gauge reading remains stable within the specified time, it is possible to accurately determine whether the overall sealing performance of the housing, shaft seal and all joint surfaces of the electric actuator body meets the standard, which greatly improves the testing efficiency and accuracy.

[0011] 2. When the linear module drives the slide to move the plug forward and insert it into the cable interface or special test port of the actuator body, the sealing ring at the front end of the plug first comes into elastic contact with the inner wall or end face of the actuator interface and is squeezed and deformed, thereby forming a tight, annular temporary sealing interface. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the workstation component in this utility model; Figure 3 This is a schematic diagram of the positioning component in this utility model; Figure 4 This is a schematic diagram of the structure of the execution component in this utility model.

[0013] In the diagram: 1. Test bench; 2. Test mechanism; 21. Station component; 211. Cam divider; 212. Turntable; 213. Tooling fixture; 22. Positioning component; 221. Gantry frame; 222. Stand; 223. Slide; 224. Horizontal plate; 225. Positioning head; 226. Cylinder; 23. Actuation component; 231. Linear module; 232. Slide; 233. Plug; 234. T-connector; 235. Pressure gauge; 236. Electric valve; 237. Connector; 3. Electric actuator body. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1 - Figure 4 This utility model provides a technical solution: an electric actuator sealing performance testing device, including a test bench 1 and an electric actuator body 3. The test bench 1 is equipped with a testing mechanism 2 for testing the sealing performance of the electric actuator body 3. The testing mechanism 2 includes: The workstation assembly 21 is set on the test bench 1 and is used to load and transfer the electric actuator body 3; Positioning component 22 is set on test bench 1 and used to fix the electric actuator body 3 on station component 21; The execution component 23 includes a linear module 231 fixed to the rear end of the top of the test bench 1. A slide block 232 is fixed on the sliding part of the linear module 231. A plug 233 is fixed to the front end inside the slide block 232. A three-way pipe 234 is fixed to the rear end of the plug 233. A pressure gauge 235 is fixed to the upper end of the three-way pipe 234.

[0016] Specifically, the actuator 23 also includes an electric valve 236 connected to the rear end of the tee pipe 234, and the other end of the electric valve 236 is connected to a connector 237 for connecting to a gas source device via a hose.

[0017] In this embodiment, after the positioning component 22 fixes the electric actuator body 3, the linear module 231 drives the slide 232 and the plug 233 fixed at its front end to move forward, so that the plug 233 is inserted into the cable interface or reserved test port of the electric actuator body 3 and forms a reliable seal. At this time, the rear end of the three-way pipe 234 is connected to an electric valve 236 for controlling the opening and closing of the air circuit. The other end of the electric valve 236 is connected to an external air source device such as an air compressor or nitrogen cylinder through a connector 237. After the test starts, the electric valve 236 is opened to fill the actuator with gas at a stable pressure. At the same time, the pressure gauge 235 installed on the upper end of the three-way pipe 234 monitors and displays the pressure value in the actuator cavity in real time. During the pressure holding stage, by observing whether the reading of the pressure gauge 235 remains stable within a specified time, it is possible to accurately determine whether the overall sealing performance of the housing, shaft seal and all joint surfaces of the electric actuator body 3 meets the standard, which greatly improves the testing efficiency and accuracy.

[0018] Specifically, the workstation assembly 21 also includes a cam divider 211 fixed to the front end of the top of the test bench 1. A turntable 212 is fixed to the output end above the cam divider 211. Three tooling fixtures 213 arranged in a circle are fixed to the top of the turntable 212 and used to position the electric actuator body 3.

[0019] In this embodiment, the cam divider 211 drives the fixed turntable 212 on its output end to perform precise indexing rotation; at the top of the turntable 212, three tooling fixtures 213 evenly distributed along the circumference rotate synchronously with the turntable 212, accurately rotating the tooling fixture 213 carrying the actuator body 3 and stopping it at the test station, waiting for the subsequent operation of the positioning component 22 and the execution component 23.

[0020] Specifically, the positioning component 22 also includes a gantry 221 fixed in the middle of the top of the test bench 1. A vertical frame 222 is fixed at the upper end of the gantry 221. A slide 223 is longitudinally slidably installed at the front end of the vertical frame 222. A horizontal plate 224 is fixed at the lower end of the slide 223. Positioning heads 225 are fixed on both the left and right sides of the lower end of the horizontal plate 224. A cylinder 226 is installed at the upper end of the vertical frame 222 and is used to drive the slide 223 to rise and fall.

[0021] In this embodiment, when the tooling fixture 213 carrying the actuator body 3 is rotated to the test station and precisely positioned by the turntable 212, the cylinder 226 installed on the upper end of the stand 222 is then activated, driving the slide 223 connected to it to slide longitudinally downward along the front end of the stand 222; the horizontal plate 224 at the lower end of the slide 223 descends synchronously, and a pair of positioning heads 225 fixed on the left and right sides of the lower end of the horizontal plate 224 press down vertically until they are firmly pressed against the specific force-bearing parts on both sides of the upper part of the housing of the electric actuator body 3 at the test station.

[0022] Specifically, the front end of the plug 233 is provided with a sealing ring, and the shape of the plug 233 matches the interface of the electric actuator body 3.

[0023] In this embodiment, when the linear module 231 drives the slide 232 to move the plug 233 forward and insert it into the cable interface or special test port of the actuator body 3, the sealing ring at the front end of the plug 233 first comes into elastic contact with the inner wall or end face of the actuator interface and is squeezed and deformed, thereby forming a tight, annular temporary sealing interface.

[0024] Specifically, the tooling fixture 213 has a contour groove that matches the shape of the lower end of the electric actuator body 3.

[0025] In this embodiment, when the operator places the electric actuator body 3 on the tooling fixture 213, the lower end of the electric actuator body 3 will naturally fall into and fit into the recessed cavity of the contour groove; the inner contour of the contour groove and the contour of the lower end of the actuator body 3 cooperate with each other, thereby forming precise constraints and limits on the actuator body 3 in the horizontal direction and the rotation direction around the vertical axis.

[0026] The working principle and usage process of this utility model are as follows: First, the operator places the electric actuator body 3 to be tested onto the tooling fixture 213 at the loading station. At this time, the lower end of the actuator body 3 naturally falls into and fits into the contour groove opened on the tooling fixture 213, thereby achieving pre-positioning in the horizontal and rotational directions. Subsequently, the cam divider 211 is activated, driving the turntable 212 fixed at its upper output end to rotate precisely, accurately rotating the tooling fixture 213 carrying the actuator body 3 and stopping it at the testing station. After the actuator is transferred to the testing station, the cylinder 226 installed on the upper end of the stand 222 is activated, driving the slide 223 connected to it to slide longitudinally downward along the front end of the stand 222, causing the pair of positioning heads 225 fixed on the left and right sides of the horizontal plate 224 at the lower end of the slide 223 to press down vertically until firmly secured. The pressure is pressed tightly against both sides of the upper part of the housing of the electric actuator body 3. After the fixing is completed, the linear module 231 drives the slide 232 and the plug 233 fixed at its front end to move forward, so that the plug 233 is inserted into the cable interface or reserved test port of the electric actuator body 3. At this time, the sealing ring at the front end of the plug 233 is squeezed and deformed against the inner wall or end face of the interface to form a reliable temporary seal. Then, by controlling the opening of the electric valve 236 fixed at the rear end of the three-way pipe 234, the gas from the external air source equipment is injected into the actuator through the connector 237 and the electric valve 236 to fill the actuator with gas at a stable pressure. At the same time, the pressure gauge 235 installed at the upper end of the three-way pipe 234 monitors and displays the pressure value in the cavity in real time. During the pressure holding stage, by observing whether the reading of the pressure gauge 235 remains stable within the specified time, it can be accurately determined whether the sealing performance of the electric actuator body 3 meets the standard.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sealing performance testing device for an electric actuator, comprising a test bench (1) and an electric actuator body (3), characterized in that: The test bench (1) is equipped with a test mechanism (2) for testing the sealing performance of the electric actuator body (3). The test mechanism (2) includes: The workstation assembly (21) is set on the test bench (1) and is used to load and transfer the electric actuator body (3). The positioning component (22) is set on the test bench (1) and is used to fix the electric actuator body (3) on the workstation component (21); The execution component (23) includes a linear module (231) fixed to the rear end of the top of the test bench (1). A slide block (232) is fixed on the sliding part of the linear module (231). A plug (233) is fixed to the front end inside the slide block (232). A three-way pipe (234) is fixed to the rear end of the plug (233). A pressure gauge (235) is fixed to the upper end of the three-way pipe (234).

2. The electric actuator sealing performance testing device according to claim 1, characterized in that: The actuator (23) also includes an electric valve (236) connected to the rear end of the tee (234), the other end of which is connected to a connector (237) for connecting to a gas source device via a hose.

3. The electric actuator sealing performance testing device according to claim 1, characterized in that: The workstation assembly (21) also includes a cam divider (211) fixed at the front end of the top of the test bench (1). A turntable (212) is fixed at the output end above the cam divider (211). Three tooling fixtures (213) arranged in a circle are fixed on the top of the turntable (212) and used to position the electric actuator body (3).

4. The electric actuator sealing performance testing device according to claim 1, characterized in that: The positioning component (22) also includes a gantry (221) fixed in the middle of the top of the test bench (1). A vertical frame (222) is fixed at the upper end of the gantry (221). A slide (223) is longitudinally slidably installed at the front end of the vertical frame (222). A horizontal plate (224) is fixed at the lower end of the slide (223). Positioning heads (225) are fixed on both the left and right sides of the lower end of the horizontal plate (224). A cylinder (226) is installed at the upper end of the vertical frame (222) and is used to drive the slide (223) to rise and fall.

5. The electric actuator sealing performance testing device according to claim 1, characterized in that: The front end of the plug (233) is provided with a sealing ring, and the shape of the plug (233) matches the interface of the electric actuator body (3).

6. The electric actuator sealing performance testing device according to claim 3, characterized in that: The tooling fixture (213) has a contour groove that matches the shape of the lower end of the electric actuator body (3).

Images