Pressure testing apparatus

Abstract

The utility model relates to test equipment technical field especially relates to a pressure test equipment. Pressure test equipment includes base assembly, fixed subassembly and test component, and base assembly is used for and bed board connection, and fixed subassembly is connected with base assembly, and test component includes test rod unit and test head unit, test rod unit is rotatively connected with fixed subassembly, and test rod unit can lengthen or shorten, test head unit is elastically connected with test rod unit, and is configured as the response to the external force and moves along the axial movement of test rod unit. Its advantage lies in, test rod unit can drive test head unit to rotate flexibly, and the elastic potential energy that accumulates between both is the pressure that test head unit gives to the component to be tested, to let test head unit can exert pressure to the multiple positions of the component to be tested, to help define the force value of the pressure sensor trigger system power-off interlock installed in the component to be tested.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, and in particular to a pressure testing device. Background Technology

[0002] During the use of medical equipment such as computed tomography (CT), patients are typically housed within the aperture of these devices. During entry or exit, the patient and / or bed are prone to colliding with the inner wall of the aperture. To prevent damage to the internal components of the medical equipment and to avoid medical accidents, a pressure sensor is installed on the aperture housing of the aforementioned medical equipment. This pressure sensor can trigger a power-off system based on the pressure applied to the housing.

[0003] Currently, when defining the anti-collision function of the housing of the aforementioned medical devices with formed apertures, there is a lack of tools to output a specified pressure at a designated location to simulate the situation when a patient or hospital bed accidentally collides with the housing of the medical device, in order to help define the force value of the pressure sensor that triggers the system's power-off interlock. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a pressure testing device.

[0005] A pressure testing device includes: a base assembly for connection to a bed plate; a fixing assembly connected to the base assembly; and a testing assembly including a test rod unit and a test head unit, the test rod unit being rotatably connected to the fixing assembly and capable of extending or retracting, and the test head unit being elastically connected to the test rod unit and configured to move axially along the test rod unit in response to an external force.

[0006] In this configuration, the base assembly is connected to the bed board, and the positions of the fixing assembly and the base assembly are relatively fixed. The test rod unit is rotatably connected to the fixing assembly, thus its position is relatively fixed; it only rotates without displacement. The test head unit and the test rod unit are elastically connected, and the accumulated elastic potential energy between them is the pressure applied by the test head unit to the test component. Since the test head unit can move along the axial direction of the test rod unit, when it moves closer to the test rod unit, its accumulated elastic potential energy increases, meaning it can apply greater pressure to the test component. In this case, the test rod unit can correspondingly extend, and the extension distance is the distance the test head unit moves towards the test rod unit, ensuring that the test head unit always contacts the test component. Similarly, when the test head unit moves away from the test rod unit, the pressure applied to the test component decreases, and the test rod unit needs to shorten accordingly.

[0007] In one embodiment, the test rod unit includes a sleeve and an elastic element. The sleeve is connected to the fixing component, and at least a portion of the sleeve is hollow. The test head unit and the elastic element are disposed inside the sleeve. One end of the elastic element abuts against the inner wall of the sleeve, and the other end abuts against the test head unit.

[0008] In one embodiment, the test head unit includes a moving block, a connecting rod, and a pressure head. The two ends of the connecting rod are connected to the moving block and the pressure head, respectively. The moving block is disposed inside the sleeve and abuts against the elastic element, and is capable of moving along the axial direction of the sleeve.

[0009] In one embodiment, the test head unit further includes an operating rod connected to the connecting rod. A through groove is formed on the outer wall of the sleeve, extending from the end of the sleeve away from the fixing component toward the fixing component. The operating rod is located in the through groove and moves along the axial direction of the sleeve, and the operating rod can engage with multiple positions on the groove wall.

[0010] In one embodiment, a plurality of snap-fit ​​grooves are provided on at least one side of the groove wall, and a snap-fit ​​protrusion is provided on the outer wall of the operating rod, the snap-fit ​​protrusion being able to snap and limit the position with the snap-fit ​​groove.

[0011] In one embodiment, the test head unit further includes a fixing ring and a fixing member. The fixing ring is connected to the operating rod and is sleeved on the outer periphery of the sleeve and moves synchronously with the operating rod. The fixing member passes through the fixing ring and can abut against the sleeve.

[0012] In one embodiment, the end of the pressure head away from the sleeve is configured as an arc-shaped structure and forms an arc-shaped surface, and an elastic pad is provided on the arc-shaped surface.

[0013] In one embodiment, the sleeve includes a first pipe section, a second pipe section, and a first connector arranged coaxially. The first pipe section is disposed in the second pipe section, and the elastic member abuts against the first pipe section. The first pipe section is movable along the axial direction of the second pipe section, and the first connector passes through the pipe wall of the second pipe section and abuts against the first pipe section.

[0014] In one embodiment, the sleeve further includes a third pipe section and a second connector. The third pipe section is sleeved on the outer periphery of the second pipe section and located at the end of the second pipe section away from the fixing component. The second connector passes through the pipe wall of the third pipe section and is capable of abutting against the first pipe section.

[0015] In one embodiment, the fixing component includes a rotating seat and a rotating unit. The rotating seat is connected to the base assembly. The rotating seat has a cavity. The rotating unit passes through the cavity, is coaxially arranged with and rotatably connected to the rotating seat, and is capable of rotating about the axis of the rotating seat. The rotating unit is connected to the test rod unit.

[0016] In one embodiment, the rotating unit includes a rotating shaft and a connecting flange. The connecting flange is connected to one end of the rotating shaft. The connecting flange includes two spaced-apart side plates and a limiting shaft passing through the two side plates. The test rod unit is located between the two side plates and is rotatably connected to the limiting shaft. The limiting shaft is axially movable to press the test rod unit against one of the side plates.

[0017] In one embodiment, the fixing component further includes a limiting unit, which includes a limiting plate, a limiting seat, and a pin. The limiting plate is connected to one end of the rotating unit, and a first limiting hole is provided on the limiting plate. The limiting seat is connected to the base assembly, and a plurality of second limiting holes are provided on the limiting seat. The plurality of second limiting holes are arranged circumferentially around the axis of the rotating unit. The pin is detachably inserted into the first limiting hole and the second limiting holes.

[0018] In one embodiment, the rotating seat is provided with at least two bearings, which are respectively sleeved on both ends of the rotating unit, and the outer walls of the two bearings are connected to the inner wall of the rotating seat.

[0019] In one embodiment, the base assembly includes a base plate, a clamping plate, and a third connector. The clamping plate is configured with a mounting groove for accommodating the base plate and the bed board. The third connector passes through the clamping plate and abuts against the base plate to press the base plate and the bed board against the groove wall of the mounting groove.

[0020] In one embodiment, the base assembly further includes at least one fourth connector, the clamp plate has a guide groove, the fourth connector passes through the guide groove and extends into the substrate, and is connected to the substrate, and the fourth connector is slidably connected to the guide groove.

[0021] Compared to existing technologies, this invention uses a test rod unit that is rotatably connected to a fixed component, allowing the test rod unit to drive the test head unit to rotate flexibly. Furthermore, the test head unit and the test rod unit are elastically connected, and the elastic potential energy accumulated between them is the pressure applied by the test head unit to the component under test. This allows the test head unit to apply pressure to multiple locations on the component under test, helping to define the force value of the pressure sensor installed in the component under test that triggers the system's power-off interlock. Attached Figure Description

[0022] Figure 1 A schematic diagram of one embodiment of the pressure testing device provided by this utility model;

[0023] Figure 2 for Figure 1 Enlarged view of section A in the image;

[0024] Figure 3 for Figure 2 A magnified view of a portion of the image;

[0025] Figure 4 for Figure 1 Enlarged view of section B in the image;

[0026] Figure 5 for Figure 1 Enlarged view of section C in the image;

[0027] Figure 6 for Figure 1 Enlarged view of section D in the image;

[0028] Figure 7 A schematic diagram of another angle of one embodiment of the pressure testing device provided by this utility model;

[0029] Figure 8 for Figure 7 Enlarged view of section E in the image;

[0030] Figure 9 A side view of one embodiment of the connecting flange of the pressure testing equipment provided by this utility model;

[0031] Figure 10 A schematic diagram of the structure of one embodiment of the connecting flange of the pressure testing equipment provided by this utility model;

[0032] Figure 11 A cross-sectional view of one embodiment of the rotating seat of the pressure testing device provided by this utility model;

[0033] Figure 12 A schematic diagram of one embodiment of the pressure testing equipment provided by this utility model, which is equipped with a bed plate;

[0034] Figure 13 This is a schematic diagram of one embodiment of the test head assembly of the pressure testing device provided by this utility model.

[0035] The symbols in the diagram represent the following meanings:

[0036] 100. Pressure testing equipment; 10. Base assembly; 11. Base plate; 12. Clamping plate; 121. Guide groove; 122. Mounting groove; 13. Third connector; 14. Fourth connector; 20. Fixing assembly; 21. Rotating seat; 211. Chamber; 212. Bearing; 22. Rotating unit; 221. Rotating shaft; 222. Connecting flange; 2221. Side plate; 2222. Limiting shaft; 23. Limiting unit; 231. Limiting plate; 2311. First limiting hole; 232. Limiting seat; 2321. Second limiting hole; 233. Pin; 24. Reinforcing seat; 30. Measuring... Test assembly; 31, Test rod unit; 311, Sleeve; 3111, Through slot; 3112, Snap-fit ​​slot; 3113, First pipe section; 3114, Second pipe section; 31141, Positioning slot; 3115, Third pipe section; 3116, First connector; 3117, Second connector; 312, Elastic element; 32, Test head unit; 321, Moving block; 322, Connecting rod; 323, Pressure head; 3231, Elastic pad; 324, Operating rod; 3241, Snap-fit ​​protrusion; 3242, Operating head; 325, Fixing ring; 326, Fixing element; 200, Bed board. Detailed Implementation

[0037] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0038] It should be noted that when a mechanism is referred to as being "fixed to" or "set on" another mechanism, it can be directly on the other mechanism or there may be an intervening mechanism. When a mechanism is considered to be "connected to" another mechanism, it can be directly connected to the other mechanism or there may be an intervening mechanism. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application's specification are for illustrative purposes only and do not represent the only possible implementation.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0040] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0041] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0042] Please see Figure 1 and Figure 12 This utility model provides a pressure testing device 100, which can apply a fixed pressure to the component to be tested, thereby assisting in defining the pressure trigger value of the component to be tested.

[0043] In this application, the pressure testing device 100 is used as an example of medical equipment such as CT / RT. The pressure testing device 100 is used to apply pressure to the aperture housing of the aforementioned medical equipment to help define the force value of the pressure sensor triggering the power-off interlock of the system.

[0044] The pressure testing device 100 includes a base assembly 10, a fixing assembly 20, and a test assembly 30. The base assembly 10 is connected to the bed plate 200. The fixing assembly 20 is connected to the base assembly 10. The test assembly 30 includes a test rod unit 31 and a test head unit 32. The test rod unit 31 is rotatably connected to the fixing assembly 20 and is capable of extending or shortening. The test head unit 32 is elastically connected to the test rod unit 31 and is configured to move along the axial direction of the test rod unit 31 in response to an external force.

[0045] Thus, the base assembly 10 is connected to the bed board 200, the positions of the fixing assembly 20 and the base assembly 10 are relatively fixed, and the test rod unit 31 is rotatably connected to the fixing assembly 20. Therefore, the position of the test rod unit 31 is relatively fixed, and it will only rotate without displacement. The test head unit 32 is elastically connected to the test rod unit 31, and the elastic potential energy accumulated between them is the pressure applied by the test head unit 32 to the part to be tested. Since the test head unit 32 can move along the axial direction of the test rod unit 31, when the test head unit 32 moves closer to the test rod unit 31, its accumulated elastic potential energy increases, that is, it can apply greater pressure to the part to be tested. In this case, the test rod unit 31 can correspondingly extend, and the extension distance is the distance that the test head unit 32 moves toward the test rod unit 31 to ensure that the test head unit 32 always abuts against the part to be tested. Similarly, when the test head unit 32 moves away from the test rod unit 31, the pressure applied to the part to be tested decreases, and the test rod unit 31 needs to be correspondingly shortened.

[0046] Specifically, please see Figures 2-3 as well as Figure 13 The test rod unit 31 includes a sleeve 311 and an elastic element 312. The sleeve 311 is connected to the fixing assembly 20, and at least a portion of the sleeve 311 is hollow. The test head unit 32 and the elastic element 312 are disposed inside the sleeve 311. One end of the elastic element 312 abuts against the inner wall of the sleeve 311, and the other end abuts against the test head unit 32. Thus, the mutual approaching movement of the sleeve 311 and the test head unit 32 can compress the elastic element 312, allowing the elastic element 312 to accumulate elastic potential energy and output a greater elastic force. Since both the test head unit 32 and the elastic element 312 are located inside the sleeve 311, they can cooperate with the inner wall of the sleeve 311. The inner wall of the sleeve 311 guides the movement direction of the elastic element 312 and the test head unit 32.

[0047] In this embodiment, the elastic element 312 is configured as a spring. It can be understood that in other embodiments, the elastic element 312 may also be configured as other elastic materials.

[0048] Furthermore, the test head unit 32 includes a moving block 321, a connecting rod 322, and a pressure head 323. The two ends of the connecting rod 322 are connected to the moving block 321 and the pressure head 323, respectively. The moving block 321 is disposed within the sleeve 311 and abuts against the elastic member 312, and is capable of moving along the axial direction of the sleeve 311. Thus, the moving block 321 abuts against the elastic member 312, and the elastic force of the elastic member 312 acts on the moving block 321, is transmitted to the pressure head 323 through the connecting rod 322, and applies pressure to the component under test through the pressure head 323.

[0049] Specifically, the diameter of the moving block 321 is larger than that of the connecting rod 322, and the moving block 321 is fitted with the inner wall of the sleeve 311 with a clearance, thereby making the movement of the test head unit 32 more stable.

[0050] The end of the pressure head 323 away from the sleeve 311 is configured as an arc-shaped structure and forms an arc-shaped surface, on which an elastic pad 3231 is provided. In this way, the elastic element 312 plays a buffering role between the pressure head 323 and the part to be tested, reducing structural damage caused by the pressure head 323 when force is applied.

[0051] Furthermore, the test head unit 32 also includes an operating rod 324, which is connected to the connecting rod 322. A through groove 3111 is formed on the outer wall of the sleeve 311, extending from the end of the sleeve 311 away from the fixing component 20 towards the fixing component 20. The operating rod 324 is located in the through groove 3111 and moves along the axial direction of the sleeve 311. The operating rod 324 can engage with multiple positions on the groove wall of the through groove 3111. Thus, the user can move the connecting rod 322 by operating the operating rod 324. When the connecting rod 322 moves, it can compress or release the elastic element 312. Therefore, when the operating rod 324 is engaged with different positions of the through groove 3111 along the axial direction of the sleeve 311, different pressure settings can be achieved.

[0052] Specifically, a portion of the operating lever 324 extends through the slot 3111 to the outer side of the sleeve 311 in the radial direction to facilitate user operation. An operating head 3242 is also connected to the end of the portion of the operating lever 324 located on the outer side of the sleeve 311. The operating head 3242 is designed with a spherical structure, allowing for better force application and a more comfortable grip.

[0053] The operating lever 324 and the groove wall of the through slot 3111 have multiple engagement methods. In this embodiment, at least one side of the groove wall of the through slot 3111 is provided with multiple engagement slots 3112, and the outer wall of the operating lever 324 is provided with engagement protrusions 3241, which can engage and limit the movement with the engagement slots 3112. In this way, the engagement slots 3112 and engagement protrusions 3241 can play a foolproof role. When the user perceives the engagement of the engagement protrusions 3241 and the engagement slots 3112, he / she can know that the operating lever 324 has moved to the designated position, and the above-mentioned engagement relationship helps the operating lever 324 to remain stable after moving to the preset position.

[0054] Specifically, in this embodiment, the outer side of the sleeve 311 is marked with graduations along the edge of the groove wall of the through slot 3111. These graduations are marked with numbers to correspond to different axial positions of the operating lever 324, i.e., the moving block 321. In other words, different graduations on the operating lever 324 represent different lengths to which the moving block 321 compresses the elastic element 312, thus reflecting the different pressures that the elastic element 312 can provide to the force-applying head. The graduations can be marked using various methods such as grooving, painting, or stickers.

[0055] To further ensure the test head unit 32 is fixed in the axial position of the sleeve 311, the test head unit 32 also includes a retaining ring 325 and a fixing member 326. The retaining ring 325 is connected to the operating rod 324 and is sleeved on the outer periphery of the sleeve 311, moving synchronously with the operating rod 324. The fixing member 326 passes through the retaining ring 325 and can abut against the sleeve 311. Thus, when the fixing member 326 abuts against the sleeve 311, the position of the fixing member 326 is fixed relative to the sleeve 311. Since the fixing member 326 passes through the retaining ring 325, the position of the retaining ring 325 is also relatively fixed. The retaining ring 325 is connected to the operating rod 324, meaning the position of the operating rod 324 remains stable.

[0056] Specifically, in this embodiment, a fixing hole is provided on the fixing ring 325, and the fixing member 326 passes through the fixing hole and is threaded into the fixing hole to ensure the connection strength with the fixing ring 325.

[0057] To allow the sleeve 311 to extend and retract freely, the sleeve 311 includes a first pipe section 3113, a second pipe section 3114, and a first connecting member 3116 arranged coaxially. The first pipe section 3113 is disposed within the second pipe section 3114, and the elastic member 312 abuts against the first pipe section 3113. The first pipe section 3113 can move axially along the second pipe section 3114. The first connecting member 3116 passes through the pipe wall of the second pipe section 3114 and abuts against the first pipe section 3113. Thus, the first pipe section 3113 is located within the second pipe section 3114 and can move axially along the second pipe section 3114. The inner wall of the second pipe section 3114 can guide the guiding direction of the first pipe section 3113. After the first connector 3116 abuts against the first pipe segment 3113, it can keep the first pipe segment 3113 in its current position. Since the first connector 3116 passes through the pipe wall of the second pipe segment 3114, the insertion and abutment of the first connector 3116 can keep the positions of the first pipe segment 3113 and the second pipe segment 3114 stable.

[0058] Specifically, in this embodiment, a first connecting hole is provided on the wall of the second pipe section 3114, and the first connecting member 3116 is threadedly engaged with the first connecting hole to ensure the connection strength with the second pipe section 3114 and the abutment strength with the first pipe section 3113.

[0059] Please see Figure 4 To further improve the length stability of the sleeve 311 after elongation or shortening, the sleeve 311 also includes a third pipe section 3115 and a second connector 3117. The third pipe section 3115 is sleeved on the outer periphery of the second pipe section 3114 and located at the end of the second pipe section 3114 away from the fixing component 20. The second connector 3117 passes through the pipe wall of the third pipe section 3115 and can abut against the first pipe section 3113. Thus, similar to the above, after the second connector 3117 abuts against the first pipe section 3113, it can ensure the positional stability between the first pipe section 3113, the second pipe section 3114, and the third pipe section 3115.

[0060] Specifically, the third pipe segment 3115 is sleeved between the connection area of ​​the first pipe segment 3113 and the second pipe segment 3114, while the first connector 3116 and the second connector 3117 are both inserted through the third pipe segment 3115 and extend into and abut against the first pipe segment 3113. The difference is that the first connector 3116 is also inserted through the second pipe segment 3114, thereby making the connection between the three pipe segments included in the sleeve 311 more stable.

[0061] The fixing assembly 20 includes a rotating base 21 and a rotating unit 22. The rotating base 21 is connected to the base assembly 10. The rotating base 21 is provided with a chamber 211. The rotating unit 22 passes through the chamber 211, is coaxially arranged with and rotatably connected to the rotating base 21, and can rotate around the axis of the rotating base 21. The rotating unit 22 is connected to the test rod unit 31. In this way, the rotation of the rotating unit 22 is limited by the inner wall of the rotating base 21, making its rotation around its own axis more stable. During its rotation, it drives the test rod unit 31 to rotate synchronously, enabling the test assembly 30 to perform contact tests on multiple positions of the component to be tested in various directions.

[0062] Please see Figure 5 The rotating unit 22 includes a rotating shaft 221 and a connecting flange 222. The connecting flange 222 is connected to one end of the rotating shaft 221. The connecting flange 222 includes two spaced-apart side plates 2221 and a limiting shaft 2222 passing through the two side plates 2221. The test rod unit 31 is located between the two side plates 2221 and is rotatably connected to the limiting shaft 2222. The limiting shaft 2222 can move along its axial direction to press the test rod unit 31 against one side plate 2221. Thus, the test rod unit 31 is rotatably connected to the limiting shaft 2222. The limiting shaft 2222 passes through the connecting flange 222 and remains in a fixed position. The test rod unit 31 rotates around the axis of the limiting shaft 2222, thereby realizing the angle adjustment of the test rod unit 31. The limiting shaft 2222 passes through the two side plates 2221 of the connecting flange 222 to ensure the connection strength between the limiting shaft 2222 and the connecting flange 222.

[0063] Specifically, the limiting shaft 2222 includes a first segment and a second segment. The diameter of the first segment is smaller than that of the second segment. Connected to the limiting shaft 2222 is the aforementioned second pipe segment 3114. A limiting hole is formed on the second pipe segment 3114, the diameter of which matches the diameter of the first segment. This means that the end of the second pipe segment 3114 is fitted onto the outer periphery of the first segment and can rotate flexibly around the axis of the first segment. The diameter of the second segment is larger than the diameter of the limiting hole, so the second segment can abut against the second pipe segment 3114 without extending into the limiting hole. When the limiting shaft 2222 is in the unlocked state, the second pipe segment 3114, i.e., the test rod unit 31, can rotate freely around the first segment. When the limiting shaft 2222 needs to lock the test rod unit 31, the second segment moves along its axial direction to press the test rod unit 31 against the side plate 2221 on one side, thus completing the limiting.

[0064] In this embodiment, a nut is fitted onto one end of the limiting shaft 2222 that protrudes from the side plate 2221, and threads are formed on the outer circumference of the limiting shaft 2222, thereby achieving locking through cooperation with the nut. In other embodiments, threaded holes can also be formed on the side plate 2221, and external threads can be formed on the outer circumference of the second section to achieve connection.

[0065] Please see Figure 11 The rotating base 21 is provided with at least two bearings 212, which are respectively sleeved on both ends of the rotating unit 22, and the outer walls of the two bearings 212 are connected to the inner wall of the rotating base 21. In this way, the rotation of the rotating unit 22 is more stable and its shaking is reduced.

[0066] The bearing 212 is welded to the inner wall of the rotating seat 21 to improve the connection strength. In other embodiments, the connection can also be achieved through interference fit or snap-fit.

[0067] Specifically, please see Figures 9-10 An angle scale mark is also provided on one side of the connecting flange 222. A positioning groove 31141 is opened on the second pipe section 3114. The positioning groove 31141 can be aligned with the angle mark on the connecting flange 222, thereby realizing the angle positioning of the test rod unit 31.

[0068] Please see Figures 7-8The fixing component 20 also includes a limiting unit 23, which includes a limiting plate 231, a limiting seat 232, and a pin 233. The limiting plate 231 is connected to one end of the rotating unit 22, and a first limiting hole 2311 is provided on the limiting plate 231. The limiting seat 232 is connected to the base component 10, and a plurality of second limiting holes 2321 are provided on the limiting seat 232. The plurality of second limiting holes 2321 are arranged circumferentially around the axis of the rotating unit 22. The pin 233 is detachably inserted into the first limiting hole 2311 and the second limiting hole 2321. In this way, the pin 233 can lock the rotating unit 22, which was originally able to rotate freely, by cooperating with the first limiting hole 2311 and the second limiting hole 2321, so that it is fixed at a set angle after rotating into position.

[0069] In addition, multiple reinforcing seats 24 are provided on both sides of the rotating seat 21. One side of the reinforcing seat 24 is connected to the rotating seat 21, and the other side is connected to the base assembly 10 to improve the installation strength of the rotating seat 21.

[0070] Please see Figure 6 The base assembly 10 includes a base plate 11, a clamping plate 12, and a third connector 13. The clamping plate 12 has a mounting groove 122 for accommodating the base plate 11 and the bed plate 200. The third connector 13 passes through the clamping plate 12 and abuts against the base plate 11 to press the base plate 11 and the bed plate 200 against the groove wall of the mounting groove 122. In this way, the bed plate 200 and the base plate 11 are stably clamped and limited in the mounting groove 122. The limiting effect of the third connector 13 on the base plate 11 can simultaneously apply clamping pressure to the base plate 11 and the bed plate 200 to complete the connection.

[0071] Specifically, a threaded hole is provided on the clamping plate 12, and the third connector 13 passes through the threaded hole and is screwed downward relative to the clamping plate 12, thereby pressing the base plate 11 and the bed plate 200.

[0072] The base assembly 10 also includes at least one fourth connector 14. A guide groove 121 is provided on the clamping plate 12. The fourth connector 14 passes through the guide groove 121 and extends into the substrate 11, and is connected to the substrate 11. The fourth connector 14 is slidably connected to the guide groove 121. Thus, the cooperation between the guide groove 121 and the fourth connector 14 makes the connection between the clamping plate 12, the substrate 11, and the bed board 200 more stable, reducing positional deviation.

[0073] Specifically, in this embodiment, the fourth connector 14 is configured as a shoulder screw, with a smooth outer peripheral side at the end near the nut, thereby achieving a sliding fit with the guide groove 121, while the outer peripheral side at the end away from the nut is provided with an external thread, thereby achieving a fixed connection with the substrate 11.

[0074] Compared to existing technologies, this invention rotatably connects the test rod unit 31 to the fixed component 20, allowing the test rod unit 31 to drive the test head unit 32 to rotate flexibly. Moreover, the test head unit 32 and the test rod unit 31 are elastically connected, and the elastic potential energy accumulated between them is the pressure applied by the test head unit 32 to the component under test. This allows the test head unit 32 to apply pressure to multiple locations on the component under test, helping to define the force value of the pressure sensor installed in the component under test that triggers the system's power-off interlock.

[0075] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0076] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A pressure testing apparatus, characterized by, include: A base assembly (10) for connection with the bed board (200); A fixing component (20) is connected to the base component (10); The test assembly (30) includes a test rod unit (31) and a test head unit (32), the test rod unit (31) being rotatably connected to the fixing assembly (20) and capable of elongation or shortening, the test head unit (32) being elastically connected to the test rod unit (31) and configured to move along the axial direction of the test rod unit (31) in response to an external force.

2. The pressure testing apparatus of claim 1, wherein, The test rod unit (31) includes a sleeve (311) and an elastic element (312). The sleeve (311) is connected to the fixing component (20), and at least a portion of the sleeve (311) is hollow. The test head unit (32) and the elastic element (312) are disposed inside the sleeve (311). One end of the elastic element (312) abuts against the inner wall of the sleeve (311), and the other end abuts against the test head unit (32).

3. The pressure testing apparatus of claim 2, wherein, The test head unit (32) includes a moving block (321), a connecting rod (322) and a pressure head (323). The two ends of the connecting rod (322) are connected to the moving block (321) and the pressure head (323) respectively. The moving block (321) is disposed inside the sleeve (311) and abuts against the elastic element (312), and can move along the axial direction of the sleeve (311).

4. The pressure testing equipment according to claim 3, characterized in that, The test head unit (32) also includes an operating rod (324), which is connected to the connecting rod (322). A through groove (3111) is provided on the outer wall of the sleeve (311). The through groove (3111) extends from the end of the sleeve (311) away from the fixing component (20) toward the fixing component (20). The operating rod (324) is located in the through groove (3111) and moves along the axial direction of the sleeve (311). The operating rod (324) can engage with multiple positions on the groove wall of the through groove (3111).

5. The pressure testing device according to claim 4, characterized in that, A plurality of snap-fit ​​grooves (3112) are provided on at least one side of the groove wall of the through groove (3111), and a snap-fit ​​protrusion (3241) is provided on the outer wall of the operating rod (324). The snap-fit ​​protrusion (3241) can snap and limit the position with the snap-fit ​​groove (3112).

6. The pressure testing device according to claim 4, characterized in that, The test head unit (32) further includes a fixing ring (325) and a fixing member (326). The fixing ring (325) is connected to the operating rod (324) and is sleeved on the outer periphery of the sleeve (311), and moves synchronously with the operating rod (324). The fixing member (326) passes through the fixing ring (325) and can abut against the sleeve (311).

7. The pressure testing equipment according to claim 3, characterized in that, The end of the pressure head (323) away from the sleeve (311) is configured as an arc-shaped structure and forms an arc-shaped surface, and an elastic pad (3231) is provided on the arc-shaped surface.

8. The pressure testing equipment according to claim 2, characterized in that, The sleeve (311) includes a first pipe section (3113), a second pipe section (3114), and a first connector (3116) arranged coaxially. The first pipe section (3113) is disposed in the second pipe section (3114), and the elastic member (312) abuts against the first pipe section (3113). The first pipe section (3113) can move along the axial direction of the second pipe section (3114). The first connector (3116) passes through the pipe wall of the second pipe section (3114) and can abut against the first pipe section (3113).

9. The pressure testing device according to claim 8, characterized in that, The sleeve (311) further includes a third pipe section (3115) and a second connector (3117). The third pipe section (3115) is sleeved on the outer periphery of the second pipe section (3114) and located at the end of the second pipe section (3114) away from the fixing component (20). The second connector (3117) passes through the pipe wall of the third pipe section (3115) and can abut against the first pipe section (3113).

10. The pressure testing device according to claim 1, characterized in that, The fixing component (20) includes a rotating seat (21) and a rotating unit (22). The rotating seat (21) is connected to the base component (10). The rotating seat (21) is provided with a chamber (211). The rotating unit (22) passes through the chamber (211), is coaxially arranged with the rotating seat (21) and rotatably connected, and can rotate around the axis of the rotating seat (21). The rotating unit (22) is connected to the test rod unit (31).

11. The pressure testing device according to claim 10, characterized in that, The rotating unit (22) includes a rotating shaft (221) and a connecting flange (222). The connecting flange (222) is connected to one end of the rotating shaft (221). The connecting flange (222) includes two spaced-apart side plates (2221) and a limiting shaft (2222) passing through the two side plates (2221). The test rod unit (31) is located between the two side plates (2221) and is rotatably connected to the limiting shaft (2222). The limiting shaft (2222) can move along its axial direction to press the test rod unit (31) against one of the side plates (2221).

12. The pressure testing device according to claim 10, characterized in that, The fixing component (20) further includes a limiting unit (23), which includes a limiting plate (231), a limiting seat (232), and a pin (233). The limiting plate (231) is connected to one end of the rotating unit (22), and a first limiting hole (2311) is provided on the limiting plate (231). The limiting seat (232) is connected to the base component (10), and a plurality of second limiting holes (2321) are provided on the limiting seat (232). The plurality of second limiting holes (2321) are arranged circumferentially around the axis of the rotating unit (22). The pin (233) is detachably inserted into the first limiting hole (2311) and the second limiting hole (2321).

13. The pressure testing device according to claim 10, characterized in that, The rotating seat (21) is provided with at least two bearings (212), which are respectively sleeved on both ends of the rotating unit (22), and the outer walls of the two bearings (212) are connected to the inner wall of the rotating seat (21).

14. The pressure testing device according to claim 1, characterized in that, The base assembly (10) includes a base plate (11), a clamping plate (12) and a third connector (13). The clamping plate (12) is configured with a mounting groove (122) for accommodating the base plate (11) and the bed board (200). The third connector (13) passes through the clamping plate (12) and abuts against the base plate (11) to press the base plate (11) and the bed board (200) against the groove wall of the mounting groove (122).

15. The pressure testing device according to claim 14, characterized in that, The base assembly (10) further includes at least one fourth connector (14). The clamping plate (12) has a guide groove (121). The fourth connector (14) passes through the guide groove (121) and extends into the substrate (11), and is connected to the substrate (11). The fourth connector (14) is slidably connected to the guide groove (121).

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