An explosion-proof solenoid valve strength testing equipment

Abstract

The present invention relates to the technical field of explosion-proof solenoid valve strength testing, and specifically to an explosion-proof solenoid valve strength testing device, comprising a simulation unit and a test unit. The present invention drives the explosion-proof solenoid valve to vibrate on a horizontal plane and a vertical plane through a vibration frame, and drives an impact box to impact the explosion-proof solenoid valve at the same time. After the vibration, a pressure frame applies pressure to the explosion-proof solenoid valve, and finally the explosion-proof solenoid valve and the detection frame are matched through a clamping frame, a connection and a detection frame, so that the explosion-proof solenoid valve is fixed and the explosion-proof solenoid valve is centered. The explosion-proof solenoid valve is detected by the detection frame. If the explosion-proof solenoid valve works normally, the strength of the explosion-proof solenoid valve meets the standard, otherwise it does not meet the standard. During the whole process, there is no need to move the explosion-proof solenoid valve multiple times, and simulations under vibration, impact and high-pressure environments can be performed, thereby improving detection efficiency, and there is no need to set up other machines, thereby reducing detection costs.

Description

Technical Field

[0001] The invention relates to the technical field of explosion-proof solenoid valve strength testing, in particular to explosion-proof solenoid valve strength testing equipment. Background Art

[0002] Explosion-proof solenoid valve is a special solenoid valve used in dangerous environments. It has the characteristics of explosion-proof, corrosion-resistant, waterproof, and high temperature resistance. It is widely used in the fields of petroleum, chemical industry, natural gas, etc. Explosion-proof solenoid valve is to enclose all the parts of the equipment that may ignite explosive gas mixture in a shell. The shell can withstand the internal explosion of the flammable mixture that penetrates into the shell through any joint surface or structural gap of the shell without damage, and will not cause the ignition of the explosive environment formed by one or more gases or vapors outside. The parts that may generate sparks, arcs and dangerous temperatures are placed in the flameproof shell, which separates the internal space of the equipment from the surrounding environment.

[0003] In order to ensure the performance and quality of explosion-proof solenoid valves, it is generally necessary to test the processed solenoid valves. The traditional purpose of testing is to determine whether the explosion-proof solenoid valves can work normally, but the explosion-proof solenoid valves will experience vibration, impact and high pressure during use. Therefore, in order to understand whether the explosion-proof solenoid valves can work normally after long-term use, they also need to be strength tested. Explosion-proof solenoid valves are divided into normally closed solenoid valves and normally open solenoid valves. Here, strength tests are performed on normally closed solenoid valves. Traditional testing methods only perform tests in a single environment at a time, and the solenoid valve needs to be moved multiple times during the entire process, resulting in low detection efficiency of the solenoid valve, and a variety of testing machines require a larger work site, resulting in higher testing costs. Summary of the invention

[0004] In view of the above problems, the embodiment of the present application provides an explosion-proof solenoid valve strength testing device to solve the technical problems of low detection efficiency and high detection cost of magnetic valves in the related art. In order to achieve the above purpose, the embodiment of the present application provides the following technical solutions.

[0005] A first aspect of an embodiment of the present application provides an explosion-proof solenoid valve strength testing device, comprising a simulation unit and a test unit, wherein the test unit is arranged on the simulation unit for testing the explosion-proof solenoid valve under a simulated environment; the simulation unit comprises a workbench, a vibration frame is fixedly installed on the workbench, an impact box is fixedly installed on the upper end of the vibration frame, a clamping frame is arranged in the impact box, an adjustment frame is arranged on the clamping frame, and a pressure frame is arranged on the workbench; the test unit comprises a connecting frame, a connecting frame is arranged on the workbench and on the left and right sides of the impact box, and a detection frame is arranged on the connecting frame.

[0006] According to an embodiment of the present invention, the vibration frame includes a sprocket, which is rotatably connected to the workbench and located directly below the four corners of the impact box. The sprocket is connected through a toothed chain belt transmission. Motor 1 is fixed to the workbench through a motor seat. The output shaft of motor 1 is fixedly connected to the sprocket on the right front through a coupling. A cylindrical cam is fixedly installed on the upper end of the sprocket, and a sliding block is connected to the cylindrical cam in a sliding fit manner. A connecting rod is fixedly installed on the left end of the sliding block, and the left end of the connecting rod is hinged to the workbench, a supporting column is fixedly installed on the upper end of the middle part of the connecting rod, and a connecting ball is fixedly installed on the upper end of the support column, and the upper ends of the connecting balls are all ball-hinged with the impact box.

[0007] According to an embodiment of the present invention, the impact box includes a box body, the upper end of the connecting ball is hinged with the box body, circular grooves are symmetrically opened at the left and right ends of the box body, a cylindrical spring is evenly fixedly installed on the inner end of the box body, and an impact ball is fixedly installed on the end of the cylindrical spring.

[0008] According to an embodiment of the present invention, the clamping frame includes a cylindrical guide plate, which is symmetrically connected to the left and right sides of the box body in a sliding fit manner. A conical groove is provided in the middle of the cylindrical guide plate. The bottom diameter of the conical groove facing the center of the box body is larger than the bottom diameter of the conical groove away from the center of the box body. Extrusion blocks are evenly connected in the conical groove in a sliding fit manner, and the extrusion block and the box body are connected in a sliding fit manner.

[0009] According to an embodiment of the present invention, the adjustment frame includes a bidirectional screw, which is rotatably connected to the front side of the box body, and the left and right sides of the bidirectional screw are respectively connected to adjacent cylindrical guide plates by threaded connection. Motor 2 is fixedly installed on the box body through a motor seat, and the output shaft of motor 2 is fixedly connected to the bidirectional screw through a coupling.

[0010] According to an embodiment of the present invention, the pressure frame includes a right-angle bracket, a right-angle bracket is fixedly installed on the workbench, a distance control cylinder is fixedly installed on the lower end of the horizontal section of the right-angle bracket, a pressure display is fixedly installed on the distance control cylinder, and a П-shaped extrusion plate is fixedly installed on the telescopic end of the distance control cylinder.

[0011] According to an embodiment of the present invention, the connecting frame includes a bidirectional threaded rod, which is rotatably connected to the workbench, and a motor three is fixedly installed on the workbench through a motor seat. The output shaft of motor three is fixedly connected to the bidirectional threaded rod through a coupling, and a movable plate is symmetrically connected to the left and right sides of the bidirectional threaded rod in a threaded manner. The movable plate and the workbench are connected in a sliding manner, and a detection frame is arranged on the upper end of the movable plate.

[0012] According to an embodiment of the present invention, the detection frame includes a ventilation pipe, a ventilation pipe is fixedly installed on the movable plate on the right side, an annular groove 1 is opened at the left end of the ventilation pipe, a rubber sealing ring 1 is fixedly installed in the annular groove 1, an air pump is fixedly installed at the end of the ventilation pipe, an air intake pipe is fixedly installed at the air inlet of the air pump, a filter plate is fixedly installed at the inner end of the air intake pipe, a sealing cylinder is fixedly installed on the movable plate on the left side, an annular groove 2 is opened at the right end of the sealing cylinder, a rubber sealing ring 2 is fixedly installed in the annular groove 2, and an air pressure display is fixedly installed on the sealing cylinder.

[0013] It can be seen from the above technical solutions that the present invention has the following advantages:

[0014] 1. In the present invention, the explosion-proof solenoid valve is limited by an impact box, and the impact box is driven to vibrate by a vibration frame, thereby driving the explosion-proof solenoid valve to vibrate on a horizontal plane and a vertical plane. At the same time, during the vibration process, the explosion-proof solenoid valve is impacted by the impact box. After the vibration is completed, pressure is applied to the explosion-proof solenoid valve by a pressure frame. Finally, the explosion-proof solenoid valve is clamped by a clamping frame so that it is centered on the clamping frame. The distance between the detection frame and the explosion-proof solenoid valve is adjusted by a connecting frame so that the detection frame and the explosion-proof solenoid valve are tightly attached to each other, thereby further centered the explosion-proof solenoid valve between the detection frames. The explosion-proof solenoid valve is detected by the detection frame. If the explosion-proof solenoid valve works normally, the strength of the explosion-proof solenoid valve meets the standard, otherwise it does not meet the standard. During the whole process, there is no need to move the explosion-proof solenoid valve multiple times to simulate vibration, impact and high-pressure environments, thereby improving detection efficiency, and there is no need to set up other machines, thereby reducing detection costs.

[0015] 2. In the present invention, with the cooperation of the toothed chain belt, the sprocket rotates synchronously, driving the cylindrical cam to rotate, and the cylindrical cam drives the sliding block to move. Under the restriction of the connecting rod, the sliding block drives the connecting rod to tilt and rotate at the hinge point of the connecting rod and the workbench. The tilted and rotating connecting rod drives the support column and the connecting ball to move on the horizontal and vertical planes. Therefore, driven by the connecting ball, the impact box is forced to move on the horizontal and vertical planes, thereby driving the explosion-proof solenoid valve to vibrate on the horizontal and vertical planes, preventing the test in a single direction from affecting the test results.

[0016] 3. In the present invention, when the box body vibrates, the impact ball is moved by inertia, and under the limit of the elastic force of the cylindrical spring, the impact ball is driven to return to the initial state, so that the impact ball moves back and forth, and the explosion-proof solenoid valve is impacted by the reciprocating impact ball, so that the explosion-proof solenoid valve is vibrated and impacted at the same time, and the П-shaped extrusion plate is driven to move downward by the distance control cylinder until the П-shaped extrusion plate squeezes the explosion-proof solenoid valve. At this time, the pressure display shows the pressure of the distance control cylinder, which is convenient for controlling the high pressure of the explosion-proof solenoid valve.

[0017] 4. In the present invention, the ventilation pipe is driven to move toward the inlet of the explosion-proof solenoid valve by the movable plate on the right side until the ventilation pipe is in close contact with the inlet of the explosion-proof solenoid valve, and the first rubber sealing ring is used to further ensure that the ventilation pipe and the inlet of the explosion-proof solenoid valve are in close contact, and the sealing cylinder is driven to move toward the outlet of the explosion-proof solenoid valve by the movable plate on the left side, and the second rubber sealing ring is used to further ensure that the sealing cylinder and the outlet of the explosion-proof solenoid valve are in close contact, thereby quickly detecting whether the explosion-proof solenoid valve can be used normally after vibration, impact and high pressure, thereby further improving the detection efficiency of the equipment.

[0018] In addition to the technical problems solved by the embodiments of the present application described above, the technical features that constitute the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions, other technical problems that can be solved by an explosion-proof solenoid valve strength testing device provided by the embodiments of the present application, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further described in detail in the specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0020] Figure 1 A schematic diagram of a main-view stereoscopic structure provided according to an embodiment of the present invention is shown.

[0021] Figure 2 A schematic diagram of a main cross-sectional plane structure provided according to an embodiment of the present invention is shown.

[0022] Figure 3 A schematic diagram of a main viewing plane structure provided according to an embodiment of the present invention is shown.

[0023] Figure 4 Shows Figure 3 AA section view.

[0024] Figure 5 Shows Figure 3 BB cross-sectional view.

[0025] Figure 6 Shows Figure 3 Cross-sectional view along CC direction.

[0026] The above drawings include the following reference numerals:

[0027] 1. Simulation unit; 11. Workbench; 12. Vibration frame; 121. Sprocket; 122. Toothed chain belt; 123. Motor 1; 124. Cylindrical cam; 125. Sliding block; 126. Connecting rod; 127. Support column; 128. Connecting ball; 13. Impact box; 131. Box body; 132. Circular groove; 133. Cylindrical spring; 134. Impact ball; 14. Clamping frame; 141. Cylindrical guide plate; 142. Cone groove; 143. Extrusion block; 15. Adjustment frame; 151. Bidirectional screw; 152. Motor 2 ;16. Pressure rack;161. Right-angle bracket;162. Distance control cylinder;163. Pressure display;164. П-shaped extrusion plate;2. Test unit;21. Connecting rack;211. Threaded rod;212. Motor three;213. Moving plate;22. Detection rack;221. Ventilation pipe;222. Annular groove one;223. Rubber sealing ring one;224. Air pump;225. Inlet pipe;226. Filter plate;227. Sealing cylinder;228. Annular groove two;229. Rubber sealing ring two;230. Air pressure display. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0029] See also Figure 1 and Figure 2, an explosion-proof solenoid valve strength test device, comprising a simulation unit 1 and a test unit 2, the test unit 2 is arranged on the simulation unit 1 for testing the explosion-proof solenoid valve under a simulated environment; the simulation unit 1 comprises a workbench 11, a vibration frame 12 is fixedly mounted on the workbench 11, an impact box 13 is fixedly mounted on the upper end of the vibration frame 12, a clamping frame 14 is arranged in the impact box 13, an adjustment frame 15 is arranged on the clamping frame 14, and a pressure frame 16 is arranged on the workbench 11; the test unit 2 comprises a connecting frame 21, a connecting frame 21 is arranged on the workbench 11 and on the left and right sides of the impact box 13, and a detection frame 22 is arranged on the connecting frame 21; firstly, the to-be-tested The explosion-proof solenoid valve is placed in the impact box 13, and then the vibration frame 12 is opened to make the impact box 13 vibrate together with the explosion-proof solenoid valve. During the vibration process, the impact box 13 impacts the explosion-proof solenoid valve. After the vibration, pressure is applied to the explosion-proof solenoid valve through the pressure frame 16, and then the pressure frame 16 is reset, and the explosion-proof solenoid valve is clamped by the clamping frame 14 so that it is centered on the clamping frame 14. At this time, the distance between the detection frame 22 and the explosion-proof solenoid valve is adjusted through the connecting frame 21, so that the detection frame 22 and the explosion-proof solenoid valve are tightly attached, and the explosion-proof solenoid valve is tested by the detection frame 22. If the explosion-proof solenoid valve works normally, the strength of the explosion-proof solenoid valve meets the standard, otherwise it does not meet the standard.

[0030] See also Figure 2 and Figure 5 The vibration frame 12 includes a sprocket 121, and the sprockets 121 are rotatably connected on the workbench 11 and located directly below the four corners of the impact box 13. The sprocket 121 is connected through a toothed chain belt 122. A motor 123 is fixed on the workbench 11 through a motor seat. The output shaft of the motor 123 is fixedly connected to the sprocket 121 on the right front through a coupling. A cylindrical cam 124 is fixedly installed on the upper end of the sprocket 121. A sliding block 125 is connected in a sliding fit manner in the cylindrical cam 124. A connecting rod 126 is fixedly installed on the left end of the sliding block 125. The left end of the connecting rod 126 is hinged to the workbench 11. A support column 127 is fixedly installed on the upper end of the middle part of the connecting rod 126. A connecting ball 127 is fixedly installed on the upper end of the support column 127. 28. The upper ends of the connecting balls 128 are spherically hinged with the impact box 13; the sprocket 121 is driven to rotate by the motor 123, and with the cooperation of the toothed chain belt 122, the sprocket 121 rotates synchronously, driving the cylindrical cam 124 to rotate, and the cylindrical cam 124 drives the sliding block 125 to move. Under the restriction of the connecting rod 126, the sliding block 125 drives the connecting rod 126 to tilt and rotate at the hinge point of the connecting rod 126 and the workbench 11, and the tilted connecting rod 126 drives the support column 127 and the connecting ball 128 to move on the horizontal and vertical planes, so that under the drive of the connecting ball 128, the impact box 13 is forced to move on the horizontal and vertical planes, thereby driving the explosion-proof solenoid valve to vibrate on the horizontal and vertical planes.

[0031] See also Figure 4 The impact box 13 includes a box body 131, the upper end of the connecting ball 128 is hinged with the box body 131, and circular grooves 132 are symmetrically opened at the left and right ends of the box body 131. A cylindrical spring 133 is evenly fixedly installed on the inner end of the box body 131, and an impact ball 134 is fixedly installed at the end of the cylindrical spring 133; when the box body 131 vibrates, the impact ball 134 is moved by inertia, and under the limit of the elastic force of the cylindrical spring 133, the impact ball 134 is driven to return to the initial state, so that the impact ball 134 reciprocates, and the explosion-proof solenoid valve is impacted by the reciprocating impact ball 134.

[0032] See also Figure 6 The clamping frame 14 includes a cylindrical guide plate 141, and the cylindrical guide plates 141 are symmetrically connected to the left and right sides of the box body 131 in a sliding fit manner. A truncated cone groove 142 is opened in the middle of the cylindrical guide plate 141. The bottom diameter of the truncated cone groove 142 facing the center of the box body 131 is larger than the bottom diameter of the truncated cone groove 142 away from the center of the box body 131. Extrusion blocks 143 are evenly connected in the truncated cone groove 142 in a sliding fit manner, and the extrusion blocks 143 are connected to the box body 131 in a sliding fit manner; the cylindrical guide plate 141 is driven to move by the adjustment frame 15, so that the extrusion blocks 143 are squeezed by the truncated cone groove 142 with a smaller inner diameter, and the distance between the extrusion blocks 143 becomes smaller until the inlet and outlet of the explosion-proof solenoid valve are clamped so that the center line thereof coincides with the center line of the cylindrical guide plate 141.

[0033] See also Figure 6 The adjustment frame 15 includes a bidirectional screw 151, and the front side of the box body 131 is rotatably connected with the bidirectional screw 151. The left and right sides of the bidirectional screw 151 are respectively connected to the adjacent cylindrical guide plates 141 by threaded connection. A second motor 152 is fixedly installed on the box body 131 through a motor seat, and the output shaft of the second motor 152 is fixedly connected to the bidirectional screw 151 through a coupling; the bidirectional screw 151 is driven to rotate by the second motor 152, thereby driving the cylindrical guide plate 141 to move.

[0034] See also Figure 4 The pressure frame 16 includes a right-angle bracket 161, the right-angle bracket 161 is fixedly installed on the workbench 11, a distance control cylinder 162 is fixedly installed on the lower end of the horizontal section of the right-angle bracket 161, a pressure display 163 is fixedly installed on the distance control cylinder 162, and a П-shaped extrusion plate 164 is fixedly installed on the telescopic end of the distance control cylinder 162; the П-shaped extrusion plate 164 is driven downward by the distance control cylinder 162 until the П-shaped extrusion plate 164 squeezes the explosion-proof solenoid valve, and at this time, the pressure display 163 displays the pressure of the distance control cylinder 162.

[0035] See also Figure 2The connecting frame 21 includes a bidirectional threaded rod 211, which is rotatably connected to the workbench 11. A motor 3 212 is fixedly installed on the workbench 11 through a motor seat. The output shaft of the motor 3 212 is fixedly connected to the bidirectional threaded rod 211 through a coupling. The left and right sides of the bidirectional threaded rod 211 are symmetrically connected to a movable plate 213 in a threaded connection. The movable plate 213 is connected to the workbench 11 in a sliding fit. The upper end of the movable plate 213 is provided with a detection frame 22; the bidirectional threaded rod 211 is driven to rotate by the motor 3 212, thereby driving the movable plate 213 to move toward each other until the detection frame 22 is in close contact with the inlet and outlet of the explosion-proof solenoid valve in the box body 131.

[0036] Continue reading Figure 2 The detection frame 22 includes a vent pipe 221, a vent pipe 221 is fixedly installed on the right movable plate 213, an annular groove 222 is provided at the left end of the vent pipe 221, a rubber sealing ring 223 is fixedly installed in the annular groove 222, an air pump 224 is fixedly installed at the end of the vent pipe 221, an air inlet pipe 225 is fixedly installed at the air inlet of the air pump 224, a filter plate 226 is fixedly installed at the inner end of the air inlet pipe 225, a sealing cylinder 227 is fixedly installed on the left movable plate 213, an annular groove 228 is provided at the right end of the sealing cylinder 227, a rubber sealing ring 229 is fixedly installed in the annular groove 228, and an air pressure display 230 is fixedly installed on the sealing cylinder 227; the vent pipe 221 is driven to move toward the inlet of the explosion-proof solenoid valve by the movable plate 213 on the right until the vent pipe 221 is in close contact with the inlet of the explosion-proof solenoid valve, and the vent pipe is further ensured by the rubber sealing ring 223. 221 is in close contact with the inlet of the explosion-proof solenoid valve, and the sealing cylinder 227 is driven to move toward the outlet of the explosion-proof solenoid valve through the movable plate 213 on the left, and the sealing cylinder 227 is further ensured to be in close contact with the outlet of the explosion-proof solenoid valve through the rubber sealing ring 229. At this time, the value of the favorite air pressure display 230 is recorded, and then the air filtered by the filter plate 226 is passed into the ventilation pipe 221 and the explosion-proof solenoid valve through the air intake pipe 225 through the air pump 224. After a period of time, observe whether the value of the air pressure display 230 changes. If it does not change, the sealing of the explosion-proof solenoid valve is still good. If it changes, then on the contrary, then the explosion-proof solenoid valve is energized, and continue to observe whether the value of the air pressure display 230 changes. If it changes, the electromagnetic coil of the explosion-proof solenoid valve works normally to generate electromagnetic suction to lift the valve core. If it does not change, the electromagnetic coil of the explosion-proof solenoid valve cannot work normally to generate electromagnetic suction to lift the valve core.

[0037] Working principle of the present invention: Step 1: First, put the explosion-proof solenoid valve to be tested into the impact box 13, and then open the vibration frame 12 to make the impact box 13 and the explosion-proof solenoid valve vibrate together. During the vibration process, the impact box 13 impacts the explosion-proof solenoid valve.

[0038] Step 2: After the vibration is finished, pressure is applied to the explosion-proof solenoid valve through the pressure frame 16, and then the pressure frame 16 is reset.

[0039] Step 3: Clamp the explosion-proof solenoid valve by the clamping frame 14 so that it is centered on the clamping frame 14. At this time, adjust the distance between the detection frame 22 and the explosion-proof solenoid valve by the connecting frame 21 so that the detection frame 22 and the explosion-proof solenoid valve are in close contact. The explosion-proof solenoid valve is tested by the detection frame 22. If the explosion-proof solenoid valve works normally, the strength of the explosion-proof solenoid valve meets the standard, otherwise it does not meet the standard.

[0040] In the description of the present invention, it is necessary to understand that the terms "center", "middle", "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "end", "axial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0041] In addition, the terms "first", "second", "number one", "number two", "one", "two" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. In the description of the present invention, "multiple" means at least two, such as two, three, etc., unless otherwise clearly and specifically limited.

[0042] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, a sliding connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An explosion-proof solenoid valve strength testing device, characterized in that , comprising a simulation unit (1) and a test unit (2), wherein the test unit (2) is arranged on the simulation unit (1) and is used to test the explosion-proof solenoid valve under the simulated environment; The simulation unit (1) comprises a workbench (11), a vibration frame (12) is fixedly mounted on the workbench (11), an impact box (13) is fixedly mounted on the upper end of the vibration frame (12), a clamping frame (14) is arranged inside the impact box (13), an adjustment frame (15) is arranged on the clamping frame (14), and a pressure frame (16) is arranged on the workbench (11); The test unit (2) comprises a connecting frame (21), the connecting frame (21) is arranged on the workbench (11) and located on the left and right sides of the impact box (13), and a detection frame (22) is arranged on the connecting frame (21); The vibration frame (12) comprises a sprocket (121), and the sprockets (121) are rotatably connected to the workbench (11) and are located directly below the four corners of the impact box (13). The sprockets (121) are connected by transmission via a toothed chain belt (122). A motor 1 (123) is fixed to the workbench (11) via a motor seat. The output shaft of the motor 1 (123) is fixedly connected to the sprocket (121) at the right front side via a coupling. A cylindrical cam is fixedly mounted on the upper end of the sprocket (121). Wheel (124), a sliding block (125) is connected in a sliding fit manner in the cylindrical cam (124), a connecting rod (126) is fixedly installed on the left end of the sliding block (125), the left end of the connecting rod (126) is hinged to the workbench (11), a supporting column (127) is fixedly installed on the middle upper end of the connecting rod (126), a connecting ball (128) is fixedly installed on the upper end of the supporting column (127), and the upper end of the connecting ball (128) is jointly ball-hinged with the impact box (13); The impact box (13) comprises a box body (131), the upper end of the connecting ball (128) is spherically hinged with the box body (131), the left and right ends of the box body (131) are symmetrically provided with circular grooves (132), the inner end of the box body (131) is evenly fixedly installed with a cylindrical spring (133), and the end of the cylindrical spring (133) is fixedly installed with an impact ball (134); The pressure frame (16) comprises a right-angle bracket (161), the right-angle bracket (161) is fixedly mounted on the workbench (11), a distance control cylinder (162) is fixedly mounted on the lower end of the horizontal section of the right-angle bracket (161), a pressure display instrument (163) is fixedly mounted on the distance control cylinder (162), and a P-shaped extrusion plate (164) is fixedly mounted on the telescopic end of the distance control cylinder (162).

2. The explosion-proof solenoid valve strength testing device according to claim 1, characterized in that: The clamping frame (14) comprises a cylindrical guide plate (141), and the cylindrical guide plates (141) are symmetrically connected to the left and right sides of the box body (131) in a sliding manner. A truncated cone groove (142) is provided in the middle of the cylindrical guide plate (141), and the bottom diameter of the truncated cone groove (142) facing the center of the box body (131) is larger than the bottom diameter of the truncated cone groove (142) away from the center of the box body (131). An extrusion block (143) is evenly connected in a sliding manner in the truncated cone groove (142), and the extrusion block (143) and the box body (131) are connected in a sliding manner.

3. The explosion-proof solenoid valve strength testing device according to claim 1, characterized in that: The adjustment frame (15) comprises a bidirectional screw (151), the front side of the box body (131) is rotatably connected with the bidirectional screw (151), the left and right sides of the bidirectional screw (151) are respectively connected to the adjacent cylindrical guide plates (141) in a threaded connection manner, a second motor (152) is fixedly mounted on the box body (131) via a motor seat, and the output shaft of the second motor (152) is fixedly connected to the bidirectional screw (151) via a coupling.

4. The explosion-proof solenoid valve strength testing device according to claim 1, characterized in that: The connecting frame (21) comprises a bidirectional threaded rod (211), the bidirectional threaded rod (211) is rotatably connected to the workbench (11), a motor 3 (212) is fixedly mounted on the workbench (11) via a motor seat, an output shaft of the motor 3 (212) is fixedly connected to the bidirectional threaded rod (211) via a coupling, a movable plate (213) is symmetrically connected to the left and right sides of the bidirectional threaded rod (211) in a threaded manner, the movable plate (213) and the workbench (11) are connected in a sliding manner, and a detection frame (22) is arranged on the upper end of the movable plate (213).

5. The explosion-proof solenoid valve strength testing device according to claim 4, characterized in that: The detection frame (22) comprises a vent pipe (221), the vent pipe (221) is fixedly mounted on the right movable plate (213), an annular groove (222) is provided at the left end of the vent pipe (221), a rubber sealing ring (223) is fixedly mounted in the annular groove (222), an air pump (224) is fixedly mounted at the end of the vent pipe (221), an air inlet pipe (225) is fixedly mounted at the air inlet of the air pump (224), a filter plate (226) is fixedly mounted at the inner end of the air inlet pipe (225), a sealing cylinder (227) is fixedly mounted on the left movable plate (213), an annular groove (228) is provided at the right end of the sealing cylinder (227), a rubber sealing ring (229) is fixedly mounted in the annular groove (228), and an air pressure display (230) is fixedly mounted on the sealing cylinder (227).

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