Test structure return unlocking device and test structure return unlocking method

Abstract

This invention belongs to the technical field of impact testing equipment and discloses a test structure return and unlocking device and a test structure return and unlocking method. The test structure return and unlocking device is used to drive the suspended test structure back from the right-side test end position to the left-side test initial position, and to disengage from the test structure after return. The test structure includes a test bench and a return block fixed to the underside of the test bench. The test structure return and unlocking device includes a frame, a drive assembly, a hook assembly, and an unlocking assembly. The drive assembly is mounted on the frame and drives the hook assembly to reciprocate in the left-right direction. The hook assembly engages with the return block, and the movement of the hook assembly pulls the return block and the test bench back to the left-side test initial position. The unlocking assembly, after the test bench reaches the left-side test initial position, drives the engaged hook assembly to unlock from the return block, ensuring return accuracy and complete separation after return.

Description

Technical Field

[0001] This invention relates to the field of impact testing equipment technology, and in particular to a test structure return and unlocking device and a test structure return and unlocking method. Background Technology

[0002] After completing an impact test, the suspended test structure must be precisely returned from the right end position to the left initial position to allow for subsequent test preparation and specimen installation on the test platform. To achieve this return, a specific structure is needed to pull the test platform to move in the left-right direction. After the test platform returns to the left initial position, the pulling structure must quickly disengage from the test platform and completely separate to avoid affecting the free movement of the test platform during the impact test, thus ensuring the accuracy of the test data and the safety of the test process.

[0003] Currently, the test structure return device suffers from problems such as incomplete traction separation, low return accuracy, and cumbersome operation, which can easily lead to test bench jamming and abnormal impact parameters, seriously affecting test efficiency and reliability.

[0004] Therefore, there is an urgent need for a test structure return and unlocking device and a test structure return and unlocking method to solve the above problems. Summary of the Invention

[0005] The first objective of this invention is to provide a test structure return and unlocking device to ensure return accuracy, solve the problems of incomplete traction separation and low return accuracy, prevent test bench jamming and abnormal impact parameters, and improve test efficiency and reliability.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A test structure return and unlocking device is used to drive the suspended test structure back from the right end position of the test to the left initial position of the test, and to disengage from the test structure after returning to its original position. The test structure includes a test platform and a return block fixed to the underside of the test platform. The test structure return and unlocking device includes:

[0008] The machine includes a frame, a drive assembly, and a hook assembly. The drive assembly is mounted on the frame and is configured to drive the hook assembly to reciprocate in the left-right direction. The hook assembly is configured to engage with the return block. The movement of the hook assembly can pull the return block and the test bench back to the left-side test initial position.

[0009] The unlocking component is configured to unlock the hook component, which is in an engaged state, from the return block after the test bench reaches the left test initial position.

[0010] As an alternative solution for the test structure return and unlocking device, the hook assembly includes:

[0011] A movable seat extends along the left-right direction, and the drive component is configured to drive the movable seat to reciprocate along the left-right direction;

[0012] A left locking hook is fixed to the left side of the movable seat, and the left locking hook has a first slot with an opening facing right that is adapted to the return block;

[0013] The device includes a right hook, a first rotating shaft, and a compression spring. One end of the right hook is rotatably connected to the movable seat via the first rotating shaft. Both ends of the compression spring are elastically connected to the right hook and the movable seat, respectively. In its natural state, the right hook is in a limited position with an acute angle to the left and right directions.

[0014] When the movable seat moves to the right, the return block presses against the free end of the right latch that is away from the first rotating shaft, the compression spring is compressed, and the right latch rotates around the first rotating shaft to the unlocked state, which extends in the left-right direction and is flush with the movable seat, thereby releasing the obstruction to the return block. At this time, the return block can engage with the first slot, driving the return block to move synchronously.

[0015] As an optional solution for the test structure return and unlocking device, the free end of the right latch is provided with a second slot with an opening facing left that is adapted to the return block. The distance between the first slot and the second slot is greater than the length of the return block. When the return block engages with the first slot, the return block can release the pressure on the right latch, the right latch switches to the limited state, and the return block is restricted between the first slot and the second slot. When the moving seat moves to the left, the return block can engage with the second slot, pulling the test platform to move to the left and return to the initial test position on the left side.

[0016] As an optional solution for the test structure return unlocking device, the hook assembly also includes an abutment post disposed on one side of the right hook member; the unlocking assembly includes a mounting frame and an unlocking plate, the mounting frame is fixed to the frame corresponding to the initial test position on the left side, the unlocking plate is rotatably connected to the mounting frame, the unlocking plate is an inverted trapezoidal plate, the inverted trapezoidal plate is provided with a first inclined surface, when the moving seat moves to the left, the abutment post can abut against the first inclined surface and push the inverted trapezoidal plate to rotate upward, so that the moving seat can pass through the mounting frame and move to the left side of the mounting frame.

[0017] As an optional solution for the test structure return and unlocking device, the inverted trapezoidal plate is also provided with a pressing plane and a second inclined plane. When the movable seat is located on the left side of the mounting frame, the drive assembly drives the movable seat to move to the right. The second inclined plane can abut against the abutting post, so that the compression spring is gradually compressed. The pressing plane can abut against the abutting post, so that the compression spring is continuously compressed. The right hook is switched to the unlocked state, so that the return block is disengaged from the second slot. The drive assembly drives the movable seat to move to the left again, so that the return block is disengaged from the first slot to complete the unlocking.

[0018] As an optional solution for the test structure return and unlocking device, the drive assembly includes a drive motor, a chain, and two sprockets. The drive motor is mounted on the frame, and the chain is wound around the two sprockets to form a closed-loop transmission structure. The output end of the drive motor is connected to either of the sprockets, and the drive motor can drive the sprocket to rotate and drive the chain to move. The chain has a connection notch for the movable seat to connect to. The two ends of the movable seat are fixedly connected to the chain links on both sides of the connection notch, and the connection surface between the movable seat and the chain is flush with the chain transmission plane. The movement of the chain can drive the movable seat to reciprocate in the left-right direction.

[0019] As an optional solution for the test structure return and unlocking device, the test structure return and unlocking device also includes a first sensor and a control mechanism. The first sensor and the drive motor are both electrically connected to the control mechanism. The first sensor is configured to detect whether the test platform has reached the left test initial position. When the first sensor detects that the test platform has reached the left test initial position, it can send a positioning signal. The control mechanism can receive the positioning signal and control the drive motor to reverse its operation, driving the chain to move the moving seat to the right, so that the return block disengages from the second slot.

[0020] As an optional solution for the test structure return and unlocking device, the test structure return and unlocking device further includes a guide rail and a slider. The guide rail is disposed on the frame and extends in the left-right direction. The slider is slidably disposed on the guide rail. The movable seat is connected to the slider to limit the movement trajectory of the movable seat.

[0021] As an optional solution for the test structure return and unlocking device, the test structure return and unlocking device also includes two limiting members, which are fixed on the frame and respectively correspond to the left limit movement position and the right limit movement position of the moving seat, so as to limit the reciprocating stroke of the moving seat.

[0022] The second objective of this invention is to provide a test structure return and unlocking method, which is applied to the aforementioned test structure return and unlocking device, to avoid test bench jamming and incomplete separation, ensure smooth test process, and improve test efficiency and data accuracy.

[0023] To achieve this objective, the present invention adopts the following technical solution:

[0024] The test structure return and unlocking method, applied to the aforementioned test structure return and unlocking device, includes the following steps:

[0025] Step S1: The drive assembly drives the movable seat to move to the right, the return block presses against the right latch, compresses the spring, and switches the right latch to the unlocked state; the return block engages with the first slot of the left latch, causing the return block to move synchronously, the spring resets and causes the right latch to rotate around the first pivot to the limit state, and the return block is restricted between the first slot and the second slot of the right latch;

[0026] Step S2: The drive assembly drives the moving seat to move to the left, and the return block engages with the second slot of the right hook, pulling the test bench to move to the left;

[0027] Step S3: The drive assembly drives the movable seat to move to the left, the abutting post abuts against the first inclined surface of the unlocking plate, and pushes the unlocking plate to rotate. The movable seat passes the mounting bracket and moves to the left side of the mounting bracket.

[0028] Step S4: The drive assembly drives the moving seat to move to the right, the return block engages with the first slot of the left latch, the second inclined surface abuts against the abutting post, causing the compression spring to be gradually compressed, the pressing surface abuts against the abutting post, causing the compression spring to be continuously compressed, and the right latch remains in the unlocked state, so that the return block disengages from the second slot;

[0029] Step S5: The drive component drives the moving seat to move to the left, the return block disengages from the first slot, and the test bench stops at the initial test position on the left side, completing the unlocking.

[0030] The beneficial effects of this invention are:

[0031] This invention provides a test structure return and unlocking device. Before the test begins, the drive component drives the hook component to move to the right, precisely engaging the hook component with the return block on the underside of the test bench in the suspended test structure. Subsequently, the drive component reverses its direction, moving the hook component along the frame to the left. The hook component pulls the return block and the test bench smoothly from the right end position of the test until the test bench reaches the left initial position. At this point, the unlocking component drives the hook component, which is in the engaged state, to unlock and completely separate the hook component from the return block, avoiding interference with subsequent impact tests. The test structure return and unlocking device ensures return accuracy through the drive component and hook component, and achieves complete separation through the unlocking component. This solves the problems of incomplete traction separation and low return accuracy, prevents test bench jamming and abnormal impact parameters, and improves test efficiency and reliability.

[0032] This invention provides a method for unlocking and repositioning a test structure. First, the drive assembly drives the moving seat to move to the right. After the return block unlocks by pressing against the right latch, it engages with the first slot. The compression spring resets, limiting the return block to between the first and second slots. Second, the moving seat moves to the left, and the return block engages with the second slot, pulling the test platform to the left. The abutment post pushes the unlocking plate to rotate, moving the moving seat to the left side of the mounting frame. Third, the moving seat moves to the right, and the second inclined surface and the abutment plane sequentially press against the abutment post, unlocking the right latch and disengaging the return block from the second slot. Finally, the moving seat moves to the left, disengaging the return block from the first slot, and the test platform remains at the initial test position on the left. This method for unlocking and repositioning a test structure achieves automatic engagement, traction, and unlocking through mechanical linkage and precise coordination, requiring no manual intervention. The actions are continuous and precise, avoiding jamming and incomplete separation, ensuring a smooth test process, and improving test efficiency and data accuracy. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the test structure return and unlocking device described in an embodiment of the present invention;

[0034] Figure 2 This is a front view of the hook assembly described in an embodiment of the present invention;

[0035] Figure 3 This is a top view of the hook assembly described in an embodiment of the present invention;

[0036] Figure 4 This is a schematic diagram of the unlocking component described in an embodiment of the present invention;

[0037] Figure 5 This is a schematic diagram of the unlocking plate described in an embodiment of the present invention;

[0038] Figure 6 yes Figure 1 Enlarged view of point A in the middle.

[0039] In the picture:

[0040] 100. Test structure; 101. Test bench; 102. Return block;

[0041] 1. Rack;

[0042] 2. Drive assembly; 21. Drive motor; 22. Chain; 221. Chain link; 23. Sprocket; 24. Connecting notch;

[0043] 3. Hook assembly; 31. Movable base;

[0044] 32. Left hook; 321. First groove;

[0045] 33. Right hook; 331. Second groove;

[0046] 34. First pivot; 35. Compression spring; 36. Abutment post;

[0047] 4. Unlocking component; 41. Mounting bracket; 42. Unlocking plate; 421. First inclined surface; 422. Pressing surface; 423. Second inclined surface; 43. Second pivot; 44. Support column; 45. Support plate;

[0048] 5. First sensor. Detailed Implementation

[0049] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0050] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or 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 invention according to the specific circumstances.

[0051] In the description of this invention, 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 below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0052] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0053] like Figure 1 As shown, the present invention provides a test structure return and unlocking device and a test structure return and unlocking method. The test structure return and unlocking device is used to drive the suspended test structure 100 to return from the right end position of the test to the left initial position of the test, and to disengage from the test structure 100 after returning. The test structure 100 includes a test platform 101 and a return block 102 fixed to the lower side of the test platform 101. The test structure return and unlocking device includes a frame 1, a drive assembly 2, a hook assembly 3, and an unlocking assembly 4. The drive assembly 2 is mounted on the frame 1 and is used to drive the hook assembly 3 to reciprocate in the left and right direction. The hook assembly 3 is used to engage with the return block 102. The movement of the hook assembly 3 can pull the return block 102 and the test platform 101 back to the left initial position of the test. The unlocking assembly 4 is used to drive the hook assembly 3, which is in the engaged state, to unlock from the return block 102 after the test platform 101 reaches the left initial position of the test.

[0054] Before the test begins, drive assembly 2 drives hook assembly 3 to move to the right, precisely engaging hook assembly 3 with the return block 102 on the underside of the test bench 101 in the suspended test structure 100. Then, drive assembly 2 reverses direction, moving hook assembly 3 along the frame 1 to the left. Hook assembly 3 pulls return block 102 and test bench 101 smoothly from the right end-of-test position until test bench 101 reaches the left initial-of-test position. At this point, unlocking assembly 4 drives hook assembly 3, which is in the engaged state, to unlock and completely separate hook assembly 3 from return block 102, preventing interference with subsequent impact tests. The test structure return and unlocking device ensures return accuracy through drive assembly 2 and hook assembly 3, and achieves complete separation with the help of unlocking assembly 4. This solves the problems of incomplete traction separation and low return accuracy, prevents test bench 101 from jamming and abnormal impact parameters, and improves test efficiency and reliability.

[0055] like Figures 1-2As shown, the hook assembly 3 includes a movable base 31, a left hook 32, a right hook 33, a first rotating shaft 34, and a compression spring 35. The movable base 31 extends in the left-right direction, and the drive assembly 2 is used to drive the movable base 31 to reciprocate in the left-right direction. The left hook 32 is fixed to the left side of the movable base 31, and the left hook 32 is provided with a first slot 321 with an opening facing right that is adapted to the return block 102. One end of the right hook 33 is rotatably connected to the movable base 31 through the first rotating shaft 34. The two ends of the compression spring 35 are elastically connected to the right hook 33 and the movable base 31 respectively. In the natural state, the right hook 33 is in a limited state with an acute angle inclined to the left-right direction. When the movable seat 31 moves to the right, the return block 102 presses against the free end of the right hook 33 away from the first rotating shaft 34, the compression spring 35 is compressed, and the right hook 33 rotates around the first rotating shaft 34 to the unlocked state where it extends in the left and right direction and is flush with the movable seat 31, thereby releasing the obstruction to the return block 102. At this time, the return block 102 can engage with the first slot 321, driving the return block 102 to move synchronously. In the initial state, with the spring 35 in its natural state, the right hook 33 is in a limited position with an acute angle to the left and right directions. When the drive assembly 2 drives the moving seat 31 to move to the right, the return block 102 presses against the free end of the right hook 33, the spring 35 is compressed, and the right hook 33 rotates around the first rotating shaft 34 to the unlocked state flush with the moving seat 31. The return block 102 then engages with the first slot 321 of the left hook 32. The movement of the moving seat 31 can drive the return block 102 and the test bench 101 to move synchronously. This structure achieves automatic engagement through mechanical linkage without manual intervention. The engagement is precise and stable, effectively improving the continuity and efficiency of the return action.

[0056] like Figures 1-2As shown, the free end of the right hook 33 is provided with a second slot 331 with an opening facing left, which is adapted to the return block 102. The distance between the first slot 321 and the second slot 331 is greater than the length of the return block 102. When the return block 102 engages with the first slot 321, the return block 102 can release the pressure on the right hook 33, the right hook 33 switches to the limited state, and the return block 102 is restricted between the first slot 321 and the second slot 331. When the moving seat 31 moves to the left, the return block 102 can engage with the second slot 331, and the traction test bench 101 moves to the left and returns to the initial test position on the left. First, the cooperation between the first slot 321 and the second slot 331 can stably limit the return block 102 between them, achieving bidirectional precise engagement and preventing the return block 102 from shifting or disengaging during traction, thus greatly improving engagement reliability and return accuracy. Second, the right hook 33 automatically resets and limits itself with the help of the compression spring 35, eliminating the need for manual intervention and simplifying the operation process. Furthermore, the stable engagement structure can prevent jamming during traction of the test bench 101, ensuring smooth and efficient return action, providing strong support for the accuracy of parameters and process safety in subsequent impact tests, and effectively improving the overall efficiency of the test.

[0057] like Figures 2-5 As shown, the hook assembly 3 also includes an abutment post 36, which is disposed on one side of the right hook member 33; the unlocking assembly 4 includes a mounting frame 41 and an unlocking plate 42. The mounting frame 41 is fixed to the frame 1 at the initial test position on the left side. The unlocking plate 42 is rotatably connected to the mounting frame 41. The unlocking plate 42 is an inverted trapezoidal plate with a first inclined surface 421. When the moving seat 31 moves to the left, the abutment post 36 can abut against the first inclined surface 421 and push the inverted trapezoidal plate to rotate upward, so that the moving seat 31 can pass through the mounting frame 41 and move to the left side of the mounting frame 41. When the movable seat 31 pulls the return block 102 to the left to the initial test position on the left, the abutment post 36 on one side of the right hook 33 abuts against the first inclined surface 421 of the unlocking plate 42, pushing the inverted trapezoidal unlocking plate 42 to rotate upward, so that the movable seat 31 can smoothly pass through the mounting frame 41 and move to the left side of the mounting frame 41. First, the unlocking plate 42 can be rotated without additional drive, so that the movable seat 31 can smoothly pass through the mounting frame 41 and move to the left side of the mounting frame 41, ensuring continuous and efficient return action. Second, the inverted trapezoidal unlocking plate 42 structure achieves smooth guidance through the first inclined surface 421, laying a stable foundation for the subsequent unlocking and separation of the hook assembly 3 and the return block 102, and improving the operational reliability of the test structure return unlocking device.

[0058] like Figures 2-5As shown, the inverted trapezoidal plate is also provided with a pressing surface 422 and a second inclined surface 423. When the movable seat 31 is located on the left side of the mounting frame 41, the drive assembly 2 drives the movable seat 31 to move to the right. The second inclined surface 423 can abut against the abutting post 36, causing the compression spring 35 to be gradually compressed. The pressing surface 422 can abut against the abutting post 36, causing the compression spring 35 to be continuously compressed. The right hook 33 switches to the unlocked state, so that the return block 102 disengages from the second slot 331. The drive assembly 2 drives the movable seat 31 to move to the left, so that the return block 102 disengages from the first slot 321 to complete the unlocking. Through the linkage of the second inclined surface 423, the pressing surface 422 and the abutting post 36, the hook assembly 3 and the return block 102 are automatically unlocked and separated without manual operation, ensuring complete separation, avoiding interference with subsequent impact tests, improving the accuracy of test data, and optimizing the automation level of the test structure return unlocking device.

[0059] like Figures 4-5 As shown, the unlocking component 4 also includes a second rotating shaft 43, through which the unlocking plate 42 is rotatably connected to the mounting bracket 41. The second rotating shaft 43 provides stable rotational support for the unlocking plate 42, ensuring that the unlocking plate 42 rotates smoothly and accurately around the second rotating shaft 43, avoiding deviation and jamming, and ensuring that the first inclined surface 421, the pressing surface 422, the second inclined surface 423 and the abutment post 36 are precisely engaged and force is transmitted, so that the right hook 33 can accurately switch the unlocking state, realize the complete separation of the hook component 3 and the return block 102, and improve the operational reliability of the test structure return unlocking device.

[0060] like Figures 4-5 As shown, the unlocking component 4 also includes a support column 44 and a support plate 45. The support column 44 is fixed on the mounting frame 41 and protrudes towards the unlocking plate 42. The support plate 45 is fixed on the mounting frame 41. The support plate 45 is a right-angled triangle, and one side of the right-angled triangle is a third inclined surface. Under normal conditions, the third inclined surface and the second inclined surface 423 of the unlocking plate 42 have the same inclination angle and fit tightly together. The free end of the support column 44 abuts against the pressing plane 422. The support column 44 and the support plate 45 form a two-sided support structure, which together limit the unlocking plate 42 to keep the pressing plane 422 of the unlocking plate 42 parallel to the mounting frame 41, ensuring the fitting force transmission accuracy with the abutting column 36, ensuring the accurate unlocking action of the right hook 33, ensuring the complete separation of the hook assembly 3 and the return block 102, avoiding unlocking offset and jamming, and improving the operational stability of the test structure return unlocking device.

[0061] like Figure 1 and Figure 6As shown, the drive assembly 2 includes a drive motor 21, a chain 22, and two sprockets 23. The drive motor 21 is mounted on the frame 1, and the chain 22 is wound around the two sprockets 23 to form a closed-loop transmission structure. The output end of the drive motor 21 is connected to either sprocket 23. The drive motor 21 can drive the sprocket 23 to rotate and drive the chain 22 to move. The chain 22 is provided with a connection notch 24 for the movable seat 31 to connect to. The two ends of the movable seat 31 are fixedly connected to the chain links 221 on both sides of the connection notch 24, and the connection surface of the movable seat 31 and the chain 22 is flush with the transmission plane of the chain 22. The movement of the chain 22 can drive the movable seat 31 to reciprocate in the left and right direction. The drive motor 21 forms a stable closed-loop transmission with the chain 22 through the sprocket 23. The two ends of the movable seat 31 are fixedly connected to the chain link 221. The connection surface of the movable seat 31 and the chain 22 is flush with the transmission plane of the chain 22, ensuring balanced transmission force and driving the movable seat 31 to move smoothly back and forth in the left and right directions, improving the return traction accuracy and action continuity, and avoiding jamming and deviation.

[0062] like Figure 1 As shown, the test structure return and unlocking device also includes a first sensor 5 and a control mechanism. Both the first sensor 5 and the drive motor 21 are electrically connected to the control mechanism. The first sensor 5 detects whether the test bench 101 has reached the left initial test position. When the first sensor 5 detects that the test bench 101 has reached the left initial test position, it sends a positioning signal. The control mechanism receives the positioning signal and controls the drive motor 21 to reverse its direction. The drive chain 22 drives the moving seat 31 to move to the right, causing the return block 102 to disengage from the second slot 331. The first sensor 5 can accurately detect whether the left initial test position has been reached and send a positioning signal. The control mechanism responds quickly and controls the drive motor 21 to reverse its direction, causing the moving seat 31 to move to the right, thus disengaging the return block 102 from the second slot 331. This eliminates the need for manual intervention, improving the automation and accuracy of the unlocking action, avoiding incomplete separation due to positioning errors, and ensuring smooth subsequent test procedures and data accuracy.

[0063] Optionally, the first sensor 5 can be a photoelectric sensor or a proximity sensor, without specific limitations.

[0064] In this embodiment, the test structure return and unlocking device also includes a second sensor (not shown). Both the second sensor and the drive motor 21 are electrically connected to the control mechanism. The second sensor detects whether the left hook 32 is under load. Initially, the drive motor 21 drives the chain 22 to move the movable seat 31 to the right. When the first slot 321 of the left hook 32 engages with the return block 102, the second sensor detects that the pressure value reaches a preset threshold and sends a signal indicating engagement. The control mechanism receives the engagement signal and controls the drive motor 21 to reverse direction, causing the drive chain 22 to move the movable seat 31 to the left. The second sensor accurately identifies the engagement status of the first slot 321 of the left hook 32 with the return block 102. The control mechanism then controls the drive motor 21 to drive the chain 22 to automatically reverse direction, moving the movable seat 31 from right to left, improving the engagement reliability and accuracy of the test structure return and unlocking device and reducing manual intervention.

[0065] Optionally, the second sensor can be a pressure sensor or a proximity sensor, without specific limitations.

[0066] In this embodiment, the test structure return and unlocking device further includes a guide rail and a slider. The guide rail is mounted on the frame 1 and extends in the left-right direction. The slider is slidably mounted on the guide rail. The movable seat 31 is connected to the slider to limit the movement trajectory of the movable seat 31. The sliding engagement structure of the guide rail and the slider provides precise movement guidance for the movable seat 31 in the left-right direction, strictly limiting the movement trajectory and preventing the movable seat 31 from deviating, tilting, or jamming during reciprocating motion. This improves the engagement and disengagement accuracy of the return block 102 with the first slot 321 and the second slot 331, reduces component transmission wear, enhances the operational stability and reliability of the test structure return and unlocking device, and provides guidance for the precise return and unlocking of the test structure 100.

[0067] In this embodiment, the test structure return and unlocking device also includes two limiting members, which are fixed on the frame 1 and correspond to the left and right extreme movement positions of the movable seat 31, respectively, to limit the reciprocating stroke of the movable seat 31. The two limiting members can accurately limit the movement stroke of the movable seat 31, avoiding collisions or interference with other components due to excessive movement, ensuring the safety and stability of the movement process, and ensuring that the engagement and disengagement actions with the return block 102 are always accurately completed within the preset stroke, providing reliable limiting guarantee for the smooth progress of the test process.

[0068] The test structure return and unlocking method in this embodiment is applied to the test structure return and unlocking device in this embodiment. The test structure return and unlocking method includes the following steps:

[0069] Step S1: Drive assembly 2 drives moving seat 31 to move to the right, return block 102 presses against right hook 33, compresses spring 35, and switches right hook 33 to unlocked state; return block 102 engages with first slot 321 of left hook 32, driving return block 102 to move synchronously, spring 35 resets and drives right hook 33 to rotate around first rotating shaft 34 to limit state, return block 102 is restricted between first slot 321 and second slot 331 of right hook 33;

[0070] Step S2: Drive assembly 2 drives moving seat 31 to move to the left, return block 102 engages with the second slot 331 of right hook 33, and traction test bench 101 moves to the left;

[0071] Step S3: Drive assembly 2 drives the moving seat 31 to move to the left, the abutting post 36 abuts against the first inclined surface 421 of the unlocking plate 42, and pushes the unlocking plate 42 to rotate. The moving seat 31 passes through the mounting bracket 41 and moves to the left side of the mounting bracket 41.

[0072] Step S4: Drive assembly 2 drives moving seat 31 to move to the right, return block 102 engages with first slot 321 of left hook 32, second inclined surface 423 can abut against abutting post 36, so that compression spring 35 is gradually compressed, pressing surface 422 can abut against abutting post 36, so that compression spring 35 is continuously compressed, right hook 33 remains unlocked, so that return block 102 disengages from second slot 331;

[0073] Step S5: Drive component 2 drives moving seat 31 to move to the left, return block 102 disengages from first slot 321, test table 101 stays at the initial test position on the left, and unlocking is completed.

[0074] First, the drive assembly 2 drives the movable seat 31 to move to the right. After the return block 102 presses against the right latch 33 to unlock, it engages with the first slot 321. The compression spring 35 resets, limiting the return block 102 to between the first slot 321 and the second slot 331. Second, the movable seat 31 moves to the left. The return block 102 engages with the second slot 331, pulling the test bench 101 to the left. The abutment post 36 pushes the unlocking plate 42 to rotate, moving the movable seat 31 to the left side of the mounting bracket 41. Third, the movable seat 31 moves to the right. The second inclined surface 423 and the abutment surface 422 press against the abutment post 36 in sequence, unlocking the right latch 33. The return block 102 disengages from the second slot 331. Finally, the movable seat 31 moves to the left. The return block 102 disengages from the first slot 321, and the test bench 101 stops at the initial test position on the left. The test structure return and unlocking method uses mechanical linkage and precise coordination, requiring no manual intervention. The actions are smooth and precise, avoiding jamming and incomplete separation, ensuring a smooth test process, and improving test efficiency and data accuracy.

[0075] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A test structure return and unlocking device, used to drive a suspended test structure (100) to return from the right test end position to the left test initial position, and to disengage from the test structure (100) after returning to its original position, wherein the test structure (100) includes a test platform (101) and a return block (102) fixed to the lower side of the test platform (101), characterized in that, The test structure return and unlocking device includes: The machine includes a frame (1), a drive assembly (2), and a hook assembly (3). The drive assembly (2) is mounted on the frame (1). The drive assembly (2) is configured to drive the hook assembly (3) to reciprocate in the left-right direction. The hook assembly (3) is configured to engage with the return block (102). The movement of the hook assembly (3) can pull the return block (102) and the test bench (101) back to the initial test position on the left side. The unlocking component (4) is configured to drive the hook component (3) in the engaged state to unlock the return block (102) after the test bench (101) reaches the left test initial position; The hook assembly (3) includes: The movable seat (31) extends along the left-right direction, and the drive assembly (2) is configured to drive the movable seat (31) to reciprocate along the left-right direction; The left hook (32) is fixed on the left side of the movable seat (31), and the left hook (32) is provided with a first slot (321) with an opening facing right that is adapted to the return block (102). The device consists of a right hook (33), a first rotating shaft (34), and a compression spring (35). One end of the right hook (33) is rotatably connected to the movable seat (31) via the first rotating shaft (34). Both ends of the compression spring (35) are elastically connected to the right hook (33) and the movable seat (31) respectively. In its natural state, the right hook (33) is in a limited position with an acute angle inclined to the left and right directions. When the movable seat (31) moves to the right, the return block (102) presses against the free end of the right hook (33) away from the first rotating shaft (34), the compression spring (35) is compressed, and the right hook (33) rotates around the first rotating shaft (34) to the unlocked state, extending along the left and right direction and flush with the movable seat (31), thereby releasing the obstruction of the return block (102). At this time, the return block (102) can engage with the first slot (321) and drive the return block (102) to move synchronously. The free end of the right hook (33) is provided with a second slot (331) with an opening facing left that is adapted to the return block (102). The distance between the first slot (321) and the second slot (331) is greater than the length of the return block (102). When the return block (102) engages with the first slot (321), the return block (102) can release the pressure on the right hook (33), the right hook (33) switches to the limiting state, and the return block (102) is restricted between the first slot (321) and the second slot (331). When the moving seat (31) moves to the left, the return block (102) can engage with the second slot (331) to pull the test bench (101) to move to the left and return to the initial test position on the left side. The hook assembly (3) further includes an abutment post (36), which is disposed on one side of the right hook member (33); the unlocking assembly (4) includes a mounting frame (41) and an unlocking plate (42). The mounting frame (41) is fixed to the frame (1) corresponding to the initial test position on the left side. The unlocking plate (42) is rotatably connected to the mounting frame (41). The unlocking plate (42) is an inverted trapezoidal plate. The inverted trapezoidal plate is provided with a first inclined surface (421). When the moving seat (31) moves to the left, the abutment post (36) can abut against the first inclined surface (421) and push the inverted trapezoidal plate to rotate upward so that the moving seat (31) can pass through the mounting frame (41) and move to the left side of the mounting frame (41); The inverted trapezoidal plate is also provided with a pressing surface (422) and a second inclined surface (423). When the movable seat (31) is located on the left side of the mounting bracket (41), the driving component (2) drives the movable seat (31) to move to the right. The second inclined surface (423) can abut against the abutting post (36), so that the compression spring (35) is gradually compressed. The pressing surface (422) can abut against the abutting post (36), so that the compression spring (35) is continuously compressed. The right hook (33) switches to the unlocked state, so that the return block (102) disengages from the second slot (331). The driving component (2) drives the movable seat (31) to move to the left again, so that the return block (102) disengages from the first slot (321) to complete the unlocking.

2. The test structure return and unlocking device according to claim 1, characterized in that, The drive assembly (2) includes a drive motor (21), a chain (22) and two sprockets (23). The drive motor (21) is mounted on the frame (1). The chain (22) is wound around the two sprockets (23) to form a closed-loop transmission structure. The output end of the drive motor (21) is connected to either of the sprockets (23). The drive motor (21) can drive the sprockets (23) to rotate and drive the chain (22) to move. The chain (22) is provided with a connection notch (24) for the movable seat (31) to connect. The two ends of the movable seat (31) are fixedly connected to the chain links (221) on both sides of the connection notch (24). The connection surface of the movable seat (31) and the chain (22) is flush with the transmission plane of the chain (22). The movement of the chain (22) can drive the movable seat (31) to reciprocate in the left and right direction.

3. The test structure return and unlocking device according to claim 2, characterized in that, The test structure return unlocking device also includes a first sensor (5) and a control mechanism. The first sensor (5) and the drive motor (21) are both electrically connected to the control mechanism. The first sensor (5) is configured to detect whether the test bench (101) has reached the left test initial position. When the first sensor (5) detects that the test bench (101) has reached the left test initial position, it can send a positioning signal. The control mechanism can receive the positioning signal and control the drive motor (21) to reverse its operation, drive the chain (22) to drive the moving seat (31) to move to the right, so that the return block (102) disengages from the second slot (331).

4. The test structure return and unlocking device according to claim 2, characterized in that, The test structure return unlocking device also includes a guide rail and a slider. The guide rail is set on the frame (1) and extends along the left and right direction. The slider is slidably set on the guide rail. The movable seat (31) is connected to the slider to limit the movement trajectory of the movable seat (31).

5. The test structure return and unlocking device according to claim 2, characterized in that, The test structure return and unlocking device also includes two limiting members, which are fixed on the frame (1) and correspond to the left limit movement position and right limit movement position of the moving seat (31) respectively, so as to limit the reciprocating motion stroke of the moving seat (31).

6. A test structure repositioning and unlocking method, characterized in that, The test structure return and unlocking device applied to any one of claims 1-5, the test structure return and unlocking method includes the following steps: Step S1: The driving component (2) drives the moving seat (31) to move to the right, the return block (102) presses against the right hook (33), compresses the compression spring (35), and switches the right hook (33) to the unlocked state; the return block (102) engages with the first slot (321) of the left hook (32), driving the return block (102) to move synchronously, the compression spring (35) resets and drives the right hook (33) to rotate around the first rotating shaft (34) to the limited state, and the return block (102) is restricted between the first slot (321) and the second slot (331) of the right hook (33); Step S2: The driving component (2) drives the moving seat (31) to move to the left, and the return block (102) engages with the second slot (331) of the right hook (33), pulling the test bench (101) to move to the left; Step S3: The driving component (2) drives the moving seat (31) to move to the left, the abutting post (36) abuts against the first inclined surface (421) of the unlocking plate (42), and pushes the unlocking plate (42) to rotate, the moving seat (31) passes through the mounting frame (41) and moves to the left side of the mounting frame (41); Step S4: The driving component (2) drives the moving seat (31) to move to the right, the return block (102) engages with the first slot (321) of the left hook (32), the second inclined surface (423) can abut against the abutting post (36), so that the compression spring (35) is gradually compressed, the pressing surface (422) can abut against the abutting post (36), so that the compression spring (35) is continuously compressed, and the right hook (33) remains in the unlocked state so that the return block (102) disengages from the second slot (331). Step S5: The driving component (2) drives the moving seat (31) to move to the left, the return block (102) disengages from the first slot (321), and the test bench (101) stays at the initial test position on the left side, thus completing the unlocking.

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