Drive rod assembly trip force testing device and testing method

Abstract

This application discloses a testing device and method for testing the tripping force of a drive rod assembly. The testing device includes: a fixed frame with an axial direction, wherein the fixed frame has a first end and a second end arranged opposite to each other along the axial direction; a lifting drive assembly including: a drive rod and a drive cam, wherein the drive cam is rotatably disposed at the second end, and the drive rod is fixedly mounted on the circumferential surface of the drive cam; a force sensor disposed inside the fixed frame and fixedly connected to the drive cam; and a positioning unit including: at least two first positioning members for fixing the release button; and at least two second positioning members for fixing the drive rod. According to this application, it can accurately and effectively test the tripping force required to lift the release button to a corresponding height, and ultimately accurately and effectively evaluate the function of the drive rod assembly, improving the accuracy of the test results.

Description

Technical Field

[0001] This application relates to the field of nuclear engineering technology, and in particular to a device and method for testing the tripping force of a drive rod assembly. Background Technology

[0002] A CRDM (Control Rod Drive Mechanism) is a vertically stepping magnetic lifting device installed on the top cover of a reactor pressure vessel to control reactor startup, power regulation, and shutdown. The CRDM mainly consists of a sealing shell, a claw assembly, a coil assembly, a drive rod assembly, and a rod position detector. The drive rod assembly is a key component used to connect the control rod assembly and adjust the control rod height; it mainly includes a drive rod, a flexible joint, a release button, a core rod, and a retaining ring.

[0003] Existing drive lever assemblies all require a series of tests before use. One crucial test is verifying the functionality of the drive lever components, specifically the tripping force test when the release button is raised to a certain height. Due to the complex structure of the drive lever assembly and the significant tripping force required to raise the release button, existing testing devices cannot accurately raise the release button to a specific height, thus failing to effectively measure the required tripping force. Furthermore, the drive lever assembly incorporates a retaining ring to lock the release button, and existing testing devices cannot eliminate the retaining ring's effect on the release button, further hindering the effective measurement of the tripping force required to raise it. Therefore, accurately and effectively testing the tripping force required to raise the release button has become an urgent problem to be solved. Summary of the Invention

[0004] Embodiments of this application provide a device and method for testing the tripping force of a drive lever assembly, so as to accurately and effectively test the tripping force required to lift the release button.

[0005] To address the aforementioned technical problems, embodiments of this application disclose the following technical solutions:

[0006] On the one hand, a drive rod assembly tripping force testing device is provided, which is used to perform lifting tests on the drive rod and release button in the drive rod assembly, including:

[0007] A fixing frame having an axial direction, wherein the fixing frame is provided with a first end and a second end arranged opposite to each other along the axial direction;

[0008] A lifting drive assembly includes: a control lever and a drive cam, wherein the drive cam is rotatably disposed at the second end, and the control lever is fixedly mounted on the circumferential surface of the drive cam;

[0009] A force sensor is disposed inside the fixed frame and is fixedly connected to the drive cam;

[0010] A positioning unit, comprising: at least two first positioning members fixedly connected to the force sensor, wherein the first positioning members are used to fix the disassembly button; and

[0011] At least two second positioning elements are disposed at the first end of the fixing frame, and the second positioning elements are used to fix the drive rod.

[0012] Under the action of external driving force, the control rod controls the drive cam to rotate in a rotation direction, and simultaneously controls the first positioning member to move away from the second positioning member axially, so that the release button and the drive rod are relatively displaced, and the force sensor measures the release force.

[0013] In addition to one or more of the features disclosed above, or as an alternative, the circumferential surface of the drive cam is provided with a limiting portion that cooperates with the fixing frame to limit the drive cam.

[0014] In addition to one or more of the features disclosed above, or alternatively, the radii of different drive cams are different.

[0015] In addition to one or more of the features disclosed above, or as an alternative, the first positioning member is provided with a first clamping groove, and the circumferential surface of the disassembly button is provided with a first fixing part, the first fixing part being adapted to the first clamping groove.

[0016] In addition to one or more of the features disclosed above, or as an alternative, the size of the first clamping groove on different first positioning members is different.

[0017] In addition to one or more of the features disclosed above, or as an alternative, the positioning unit further includes: an adapter and a disassembly sleeve, one end of the adapter being fixedly connected to a force sensor, the disassembly sleeve and the adapter being mounted on the other end of the adapter, the disassembly sleeve being used to separate the retaining ring fitted onto the circumferential surface of the disassembly button from the disassembly button.

[0018] In addition to one or more of the features disclosed above, or as an alternative, the second positioning member is provided with a second clamping groove, and the circumferential surface of the drive rod is provided with a second fixing part, the second fixing part being adapted to the second clamping groove.

[0019] In addition to one or more of the features disclosed above, or alternatively, the size of the second clamping groove on different second positioning members may vary.

[0020] In addition to one or more of the features disclosed above, or alternatively, the lifting drive assembly further includes: an adjustment unit for adjusting the height of the force sensor along the axial direction;

[0021] The adjustment unit includes a first connector, an adjustment member, and a second connector arranged sequentially along the axial direction. One end of the first connector is fixedly connected to the drive cam, and the other end of the first connector is movably connected to the adjustment member. The first and last ends of the second connector are fixedly connected to the adjustment member and the force sensor, respectively.

[0022] Under the action of the driving force, the adjusting member moves closer to or further away from the first connecting member, so that the force sensor moves closer to or further away from the driving cam.

[0023] In addition to one or more of the features disclosed above, or as an alternative, the first connector and the adjusting member are movably connected by a screw connection.

[0024] On the other hand, a method for testing the tripping force of a drive rod assembly is further disclosed, applicable to the drive rod assembly tripping force testing device as described in any of the above claims, comprising the following steps:

[0025] Assemble the components into a test device and adjust each component to the initial test state;

[0026] The drive rod assembly is loaded into the test device, and the first positioning component is used to fix the disassembly button, the second positioning component is used to fix the drive rod, and the disassembly sleeve is used to separate the retaining ring from the disassembly button.

[0027] The drive cam in the drive test device rotates to raise the release button to the height to be tested, and the required tripping force is obtained by using a force sensor.

[0028] One of the above technical solutions has the following advantages or beneficial effects: In this application, the first positioning member is used to fix the disassembly button, and the second positioning member is used to fix the drive rod. The control rod controls the drive cam to rotate at a certain angle, so that the disassembly button is raised to a certain height. The force sensor is used to test the tripping force required to raise the disassembly button to the corresponding height. The drive cam can be used to accurately control the disassembly button to be raised to the corresponding height, thereby accurately and effectively testing the tripping force required to raise the disassembly button to the corresponding height. Finally, the function of the drive rod assembly can be accurately and effectively evaluated, improving the accuracy of the test results. At the same time, the overall structure is simple and facilitates the force measurement operation of the drive rod assembly. Attached Figure Description

[0029] The technical solution and other beneficial effects of this application will become apparent from the following detailed description of specific embodiments in conjunction with the accompanying drawings.

[0030] Figure 1 This is a structural view of the drive rod assembly tripping force testing device in its initial state according to an embodiment of this application;

[0031] Figure 2 yes Figure 1 A magnified view of a section at point A in the middle;

[0032] Figure 3 This is a structural view of the drive rod assembly tripping force testing device under test state according to the embodiments of this application;

[0033] Figure 4 This is a structural diagram of the drive rod assembly tripping force testing device provided in the embodiments of this application;

[0034] Figure 5 This is a structural diagram of the drive rod assembly provided according to an embodiment of this application;

[0035] Figure 6 This is a structural diagram of the positioning unit provided according to an embodiment of this application;

[0036] Figure 7 This is a top view of the first positioning element provided according to an embodiment of this application;

[0037] Figure 8 This is a top view of the second positioning element provided according to an embodiment of this application;

[0038] Figure 9 This is a flowchart illustrating the method for testing the tripping force of a drive rod assembly according to an embodiment of this application. Detailed Implementation

[0039] To make the objectives, technical solutions, and beneficial effects of this application clearer, the following detailed description, in conjunction with the accompanying drawings and specific embodiments, further illustrates this application. It should be understood that the specific embodiments described in this specification are merely for explaining this application and are not intended to limit it.

[0040] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. 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 indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0041] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0042] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being 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 includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0043] Currently, all existing drive rod assemblies require a series of tests before use. One of the key tests is verifying the functionality of the drive rod components, specifically testing the tripping force when the release button in the drive rod assembly is raised to a certain height. Due to the complex structure of the drive rod assembly and the large tripping force required to raise the release button, existing testing devices cannot accurately raise the release button to a certain height, thus failing to effectively test the required tripping force. Furthermore, the drive rod assembly has a retaining ring that locks the release button, but existing testing devices cannot eliminate the effect of the retaining ring on the release button, further hindering the effective testing of the tripping force required to raise the release button.

[0044] To address the aforementioned problems, embodiments of this application provide a drive rod assembly tripping force testing device 100. Wherein, Figures 1 to 8 A schematic diagram of the drive rod assembly tripping force testing device 100 is shown.

[0045] In the embodiments of this application, such as Figures 1 to 8 As shown, the drive rod assembly tripping force testing device 100 is used to perform lifting tests on the drive rod assembly 200.

[0046] Among them, such as Figure 5 As shown, the drive rod assembly 200 includes a drive rod 210, a release button 220, and a retaining ring 230. One end of the drive rod 210 has a receiving groove 212, the extending direction of the receiving groove 212 is parallel to the extending direction of the drive rod 210, at least part of the release button 220 is movably covered in the receiving groove 212, and the retaining ring 230 is sleeved on the circumferential surface of the portion of the release button 220 located in the receiving groove 212 to lock the release button 220.

[0047] Furthermore, the drive rod assembly tripping force testing device 100, used for immersion and lifting tests of the drive rod 210 and the release button 220, may include: a fixing frame 110 having an axial direction Z, with a first end and a second end arranged opposite to each other along the axial direction Z; a lifting drive assembly 120 including: a control rod 121 and a drive cam 122, the drive cam 122 being rotatably disposed at the second end, and the control rod 121 being fixedly mounted on the circumferential surface of the drive cam 122; a force sensor 130 disposed inside the fixing frame 110, and the force sensor 130 being fixedly connected to the drive cam 122; and a positioning unit 140 including: at least two first positioning members 141, which are fixedly connected to the force sensor 130 and are used to fix the release button 220; and at least two second positioning members 150, the two second positioning members 150 being disposed at the first end of the fixing frame 110 and being used to fix the drive rod 210;

[0048] Under the action of external driving force, the control lever 121 controls the drive cam 122 to rotate in a rotation direction, and simultaneously controls the first positioning member 141 to move away from the second positioning member 150 along the axial direction Z, so that the release button 220 and the drive lever 210 are relatively displaced, and the force sensor 130 measures the release force.

[0049] In this context, "first" and "second" in the first positioning element 141 and the second positioning element 150 are merely different positioning elements that can be distinguished, and are not a limitation on the number or order of the positioning elements.

[0050] The driving force can be provided by mechanical equipment or manually. This application does not impose specific limitations, and the choice can be made according to the actual situation.

[0051] Among them, the force sensor 130 can be a crane scale.

[0052] Understandably, in this application, by mounting the drive rod assembly 200 in the aforementioned testing device, the first positioning member 141 is used to fix the disassembly button 220, and the second positioning member 150 is used to fix the drive rod 210. The control rod 121 controls the drive cam 122 to rotate a certain angle along direction B, thereby controlling the first positioning member 141 to move away from the second positioning member 150 along the axial direction Z, that is, controlling the first positioning member 141 to lift a certain height along the axial direction Z, so that a relative displacement occurs between the disassembly button 220 and the drive rod 210, that is, the disassembly button 220 is lifted a certain height along the axial direction Z. Finally, the force sensor 130 tests the tripping force required to lift the disassembly button 220 to the corresponding height. The overall structure is simple and facilitates the force measurement operation of the drive rod assembly. At the same time, the drive cam can be used to accurately control the disassembly button 220 to be lifted to the corresponding height, thereby accurately and effectively testing the tripping force required to lift the disassembly button 220 to the corresponding height. Finally, the function of the drive rod assembly can be accurately and effectively evaluated, improving the accuracy of the test results.

[0053] After the test is completed, the drive cam 122 is rotated in direction C by the control lever 121 to a certain angle so that the disassembly button 220 is reset.

[0054] In the preferred embodiments of this application, such as Figure 4 As shown, the control lever 121 controls the drive cam 122 to rotate 180° in a rotational direction to raise the release button 220 to the corresponding height.

[0055] In the embodiments of this application, a limiting part 1221 is provided on the circumferential surface of the drive cam 122, and the limiting part 1221 cooperates with the fixing frame 110 to limit the drive cam 122.

[0056] Understandably, in this application, by providing a limiting part 1221 on the drive cam 122, when the control lever 121 controls the drive cam 122 to rotate to the correct position, the limiting part 1221 and the fixed frame 110 are used to limit the drive cam 122, preventing the control lever 121 from excessively controlling the rotation of the drive cam 122, so that the testing device can accurately raise the release button 220 to the corresponding height, and accurately test the required release force.

[0057] In the embodiments of this application, different drive cams 122 have different radii, so that the appropriate size of drive cam 122 can be selected according to the lifting height requirement of the release button 220. This ensures that the release button 220 can be accurately lifted to the corresponding height by the drive cam 122 when it is lifted to different heights. In this way, the different triggering forces required when the release button 220 is lifted to different heights can be accurately obtained, and the function of the drive rod assembly can be accurately evaluated.

[0058] Specifically, in this application, the drive cam 122 of a corresponding size can be selected according to the required lifting height of the release button 220. For example, when the required lifting height of the release button 220 is high, a drive cam 122 with a larger radius can be selected; when the required lifting height of the release button 220 is moderate, a drive cam 122 with a moderate radius can be selected; and when the required lifting height of the release button 220 is low, a drive cam 122 with a smaller radius can be selected. In this application, by selecting the corresponding drive cam 122 according to the required lifting height of the release button 220, the release button 220 can be lifted to a precise height for different test requirements, thereby accurately and effectively testing the required tripping force and accurately evaluating the function of the drive rod assembly.

[0059] In the embodiments of this application, such as Figure 1 , Figure 3 , Figure 5 , Figure 7 As shown, the first positioning member 141 is provided with a first clamping groove 1411, and the circumferential surface of the disassembly button 220 is provided with a first fixing part 221. The first fixing part 221 is adapted to the first clamping groove 1411, and a fixed limiting structure is formed between the first fixing part 221 and the first clamping groove 1411 to fix the disassembly button 220.

[0060] The term "first" in the first clamping slot 1411 is merely to distinguish between different clamping slots and does not constitute a limitation on the number or order of clamping slots.

[0061] The term "first" in "first fixing part 221" is merely for distinguishing different fixing parts and is not a limitation on the number or order of fixing parts.

[0062] In a preferred embodiment of this application, the shape of the first clamping groove 1411 can be any one of an arc shape, a V shape, or a U shape. For example, the shape of the first clamping groove 1411 is an arc shape; another example is that the shape of the first clamping groove 1411 is a V shape; yet another example is that the shape of the first clamping groove 1411 is a U shape. The specific setting of the shape of the first clamping groove 1411 can be selected by the operator according to the actual situation, and no specific limitation is made in this application. Preferably, the shape of the first clamping groove 1411 is an arc shape.

[0063] In the embodiments of this application, the size of the first clamping groove 1411 on different first positioning members 141 is different.

[0064] Specifically, in this application, a first positioning member 141 with a first clamping groove 1411 of a corresponding size can be selected according to the model of the disassembly button 220. For example, when the model of the disassembly button 220 is large, a first positioning member 141 with a larger first clamping groove 1411 can be selected; when the model of the disassembly button 220 is moderate, a first positioning member 141 with a moderately sized first clamping groove 1411 can be selected; and when the model of the disassembly button 220 is small, a first positioning member 141 with a smaller first clamping groove 1411 can be selected. In this application, by selecting the corresponding first positioning member 141 according to the model of the disassembly button 220, each disassembly button 220 is precisely clamped and fixed, so that the disassembly button 220 is firmly clamped.

[0065] Furthermore, the radius of the arc of the first clamping groove 1411 is defined as R1 mm, satisfying: 30 ≤ R1 ≤ 50 mm. That is, the radius of the arc of the first clamping groove 1411, R1, can be controlled within the range of 30 to 50 mm. For example, the radius of the arc of the first clamping groove 1411, R1, can be one of 30 mm, 32 mm, 34 mm, 36 mm, 38 mm, 40 mm, 42 mm, 44 mm, 46 mm, 48 mm, or 50 mm, or any combination thereof. It is worth noting that the specific value of the radius of the arc, R1, is given only as an example, and any value of the radius of the arc, R1, within the range of 30 to 50 mm is within the protection scope of this application. In this application, by controlling the radius of the arc of the first clamping groove 1411 within the range of 30 to 50 mm, it is convenient to select the corresponding first positioning member 141 for positioning and fixing according to the different sizes of the disassembly button 220, thus making the testing device universal.

[0066] In the embodiments of this application, such as Figures 1 to 4 and Figure 6As shown, the positioning unit 140 also includes: an adapter 142 and a disassembly sleeve 143. One end of the adapter 142 is fixedly connected to the force sensor 130. The disassembly sleeve 143 and the adapter 142 are installed on the other end of the adapter 142. The disassembly sleeve 143 is used to separate the retaining ring 230, which is sleeved on the circumferential surface of the disassembly button 220, from the disassembly button 220.

[0067] Preferably, the disassembly sleeve 143 is hollow inside to form a relief cavity 1431, and the inner diameter of the relief cavity 1431 is greater than or equal to the outer diameter of the disassembly button 220, while the outer diameter of the disassembly sleeve 143 is less than or equal to the inner diameter of the receiving groove 212.

[0068] Understandably, by setting the disassembly sleeve 143 in this application, when the drive rod assembly 200 is mounted on the test device, the disassembly sleeve 143 can extend into the receiving groove 212 to separate the retaining ring 230 from the disassembly button 220, preventing the retaining ring 230 from affecting the disassembly button 220 during the lifting test, ensuring the disassembly button 220 lifting test can be carried out, and enabling the test device to accurately test the required tripping force.

[0069] In the embodiments of this application, such as Figure 1 , Figure 5 , Figure 8 As shown, the second positioning member 150 is provided with a second clamping groove 151, and the circumferential surface of the drive rod 210 is provided with a second fixing part 211. The second fixing part 211 is adapted to the second clamping groove 151, and a fixed limiting structure is formed between the second fixing part 211 and the second clamping groove 151 to fix the drive rod 210 and prevent the drive rod 210 from moving during the test.

[0070] The term "first" in the second clamping groove 151 is only for distinguishing different clamping grooves and is not a limitation on the number or order of clamping grooves.

[0071] The term "first" in the second fixing part 211 is merely for distinguishing different fixing parts and is not a limitation on the number or order of fixing parts.

[0072] In a preferred embodiment of this application, the shape of the second clamping groove 151 can be any one of an arc shape, a V shape, or a U shape. For example, the shape of the second clamping groove 151 is an arc shape; another example is that the shape of the second clamping groove 151 is a V shape; yet another example is that the shape of the second clamping groove 151 is a U shape. The specific setting of the shape of the second clamping groove 151 can be selected by the operator according to the actual situation, and no specific limitation is made in this application. Preferably, the shape of the second clamping groove 151 is an arc shape.

[0073] In the embodiments of this application, the size of the second clamping groove 151 on different second positioning members 150 is different.

[0074] Specifically, in this application, a second positioning member 150 with a corresponding size of second clamping groove 151 can be selected according to the corresponding model of the drive rod 210. For example, when the model of the drive rod 210 is large, a second positioning member 150 with a larger second clamping groove 151 can be selected; when the model of the drive rod 210 is moderate, a second positioning member 150 with a moderately sized second clamping groove 151 can be selected; and when the model of the drive rod 210 is small, a second positioning member 150 with a smaller second clamping groove 151 can be selected. In this application, by selecting the corresponding second positioning member 150 according to the corresponding model of the drive rod 210, each drive rod 210 is precisely clamped and fixed, so that the drive rod 210 is firmly clamped.

[0075] Furthermore, the radius of the second clamping groove 151 is defined as R2 mm, satisfying: 40 ≤ R2 ≤ 60 mm. That is, the radius of the second clamping groove 151, R2, can be controlled within the range of 40 to 60 mm. For example, the radius of the second clamping groove 151, R2, can be one of 40 mm, 42 mm, 44 mm, 46 mm, 48 mm, 50 mm, 52 mm, 54 mm, 56 mm, 58 mm, or 60 mm, or any combination thereof. It is worth noting that the specific value of the radius of the second clamping groove, R2, is given only as an example, and any value of the radius of the second clamping groove, R2, within the range of 40 to 60 mm is within the protection scope of this application. In this application, by controlling the radius of the second clamping groove 151, R2, within the range of 40 to 60 mm, the appropriate second positioning element 150 can be selected for positioning and fixing according to different sizes of drive rods 210, making the testing device versatile.

[0076] In the embodiments of this application, such as Figure 3 As shown, the lifting drive assembly 120 also includes an adjustment unit 123, which is used to adjust the height of the force sensor 130 along the axial Z direction;

[0077] Furthermore, the adjustment unit 123 includes a first connecting member 1231, an adjusting member 1232, and a second connecting member 1233 arranged sequentially along the Z-axis. One end of the first connecting member 1231 is fixedly connected to the drive cam 122, and the other end of the first connecting member 1231 is movably connected to the adjusting member 1232. The first and last ends of the second connecting member 1233 are fixedly connected to the adjusting member 1232 and the force sensor 130, respectively.

[0078] Under the action of the driving force, the adjusting member 1232 moves closer to or further away from the first connecting member 1231, so that the force sensor 130 moves closer to or further away from the driving cam 122.

[0079] In this context, "first" and "second" in the first connector 1231 and the second connector 1233 are simply different connectors that can be distinguished, and are not a limitation on the number or order of the connectors.

[0080] The driving force can be provided by mechanical equipment or manually. This application does not impose specific limitations, and the choice can be made according to the actual situation.

[0081] Understandably, in this application, the force sensor 130 is adjusted to an appropriate height by adjusting the adjusting component 1232 to ensure that the force sensor 130 can accurately test the tripping force and ensure the accuracy of the test results.

[0082] In the embodiments of this application, the first connector 1231 and the adjusting member 1232 are connected by a screw connection to facilitate the assembly of the first connector 1231 and the adjusting member 1232, improve the assembly efficiency of the overall device, and at the same time, facilitate the adjusting member 1232 to adjust the height of the force sensor 130 along the Z-axis.

[0083] On the other hand, in the embodiments of this application, such as Figure 9 As shown, this application also provides a method for testing the tripping force of a drive rod assembly, applicable to the drive rod assembly tripping force testing device as described in any of the above claims, comprising the following steps:

[0084] S10. Assemble the components into a test device and adjust each component to the initial test state;

[0085] S20. Load the drive rod assembly 200 into the test device, while using the first positioning member 141 to fix the disassembly button 220, using the second positioning member 150 to fix the drive rod 210, and using the disassembly sleeve 143 to separate the retaining ring 230 from the disassembly button 220.

[0086] S30, the drive cam 122 in the drive test device rotates to raise the release button 220 to the height to be tested, and the required tripping force is obtained by the force sensor 130.

[0087] The above steps are provided only to help understand the method, structure, and core ideas of this application. Those skilled in the art can make various improvements and modifications to this application without departing from its principles, and these improvements and modifications also fall within the scope of protection of the claims.

Claims

1. A drive rod assembly release force testing device, used for lifting tests on the drive rod (210) and release button (220) in a drive rod assembly (200), characterized in that, include: A fixing frame (110) has an axial direction (Z), and the fixing frame (110) has a first end and a second end arranged opposite to each other along the axial direction (Z); The lifting drive assembly (120) includes a control lever (121) and a drive cam (122), wherein the drive cam (122) is rotatably disposed at the second end, and the control lever (121) is fixedly mounted on the circumferential surface of the drive cam (122); A force sensor (130) is disposed inside the fixed frame (110), and the force sensor (130) is fixedly connected to the drive cam (122); A positioning unit (140) includes: at least two first positioning members (141), an adapter (142), and a disassembly sleeve (143); the first positioning members (141) are fixedly connected to the force sensor (130), and the first positioning members (141) are used to fix the disassembly button (220); one end of the adapter (142) is fixedly connected to the force sensor (130); the disassembly sleeve (143) is installed on the other end of the adapter (142), and the disassembly sleeve (143) is used to separate the retaining ring (230) sleeved on the circumferential surface of the disassembly button (220) from the disassembly button (220); and At least two second positioning members (150) are disposed at the first end of the fixing frame (110), and the second positioning members (150) are used to fix the drive rod (210). Under the action of external driving force, the control rod (121) controls the drive cam (122) to rotate in a rotation direction, and simultaneously controls the first positioning member (141) to move away from the second positioning member (150) along the axial direction (Z), so that the release button (220) and the drive rod (210) are relatively displaced, and the force sensor (130) measures the release force.

2. The drive link assembly trip force testing device of claim 1, wherein, The circumferential surface of the drive cam (122) is provided with a limiting part (1221), which cooperates with the fixing frame (110) to limit the drive cam (122).

3. The drive bar assembly trip force testing device of either of claims 1 or 2, wherein, The radii of the different drive cams (122) are different.

4. The drive link assembly trip force testing device of claim 1, wherein, The first positioning member (141) is provided with a first clamping groove (1411), and the circumferential surface of the disassembly button (220) is provided with a first fixing part (221), which is adapted to the first clamping groove (1411).

5. The drive rod assembly tripping force testing device as described in claim 4, characterized in that, The size of the first clamping groove (1411) on different first positioning members (141) is different.

6. The drive rod assembly tripping force testing device as described in claim 1, characterized in that, The second positioning member (150) is provided with a second clamping groove (151), and the circumferential surface of the drive rod (210) is provided with a second fixing part (211), which is adapted to the second clamping groove (151).

7. The drive rod assembly tripping force testing device as described in claim 6, characterized in that, The second clamping groove (151) on different second positioning members (150) has different sizes.

8. The drive rod assembly tripping force testing device as described in claim 1, characterized in that, The lifting drive assembly (120) further includes an adjustment unit (123) for adjusting the height of the force sensor (130) along the axial (Z) direction; The adjustment unit (123) includes a first connector (1231), an adjustment member (1232), and a second connector (1233) arranged sequentially along the axial (Z) direction. One end of the first connector (1231) is fixedly connected to the drive cam (122), and the other end of the first connector (1231) is movably connected to the adjustment member (1232). The first and last ends of the second connector (1233) are fixedly connected to the adjustment member (1232) and the force sensor (130), respectively. Under the action of the driving force, the adjusting member (1232) moves closer to or further away from the first connecting member (1231), such that the force sensor (130) moves closer to or further away from the driving cam (122).

9. The drive rod assembly tripping force testing device as described in claim 8, characterized in that, The first connector (1231) and the adjusting member (1232) are connected by a screw thread.

10. A method for testing the tripping force of a drive rod assembly, applicable to the drive rod assembly tripping force testing device as described in any one of claims 1 to 9, characterized in that, Includes the following steps: Assemble the components into a test device and adjust each component to the initial test state; The drive rod assembly (200) is loaded into the test device, and the first positioning member (141) is used to fix the disassembly button (220), the second positioning member (150) is used to fix the drive rod (210), and the disassembly sleeve (143) is used to separate the retaining ring (230) from the disassembly button (220). The drive cam (122) in the drive test device rotates to lift the release button (220) to the height to be tested, and the required tripping force is obtained by the force sensor (130).

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