Detection device and detection method for service life of blocking cylinder

Abstract

The invention discloses a device for detecting the service life of a blocking cylinder. The device comprises a machine table, a load table, a circulating transmission structure, a pneumatic clutch and a circulating driving module, a conveying layer, a testing layer and a bearing layer are sequentially formed on the machine table from top to bottom, two long bases are oppositely arranged on the two sides of the testing layer of the machine table, a plurality of mounting plates are arranged between the two ends of the bearing layer, and a testing position is formed on each mounting plate on the testing layer; the load table is arranged on the conveying layer in a sliding manner; the circulating transmission structure is arranged between the two long bases and comprises a driving shaft and a driven shaft which are oppositely arranged at the two ends of the test layer, and two groups of first chain transmission assemblies mounted between the driving shaft and the driven shaft; one end of the driving shaft penetrates out of a long base and is a transmission end; a transmission block connected with the load table is arranged on the upper section of a transmission chain of the first chain transmission assembly. The transmission end of the driving shaft is connected with the driving end of the circulation driving module through the pneumatic clutch. According to the invention, the service life of a plurality of blocking cylinders with different specifications can be tested simultaneously.

Description

Technical Field

[0001] The present invention relates to the technical field of blocking cylinder detection equipment, and in particular to a service life detection device and detection method for a blocking cylinder. Background Art

[0002] In occasions such as automated assembly lines and logistics handling, due to the relatively large self-load of products, jigs, etc., and the relatively fast speed of the automated assembly line, problems such as inability to stop and accurately position at specific positions often occur. Especially in the field of automotive lithium battery product processing, the load of the jigs used in production is generally above 1T. Conventional stop cylinders and other products cannot meet the load requirements. The development of heavy-duty blocking cylinders can effectively solve the above-mentioned jig stop and positioning problems, and at the same time achieve strong versatility and low cost, providing more alternative solutions for automated production, being safe, reliable, economical and convenient.

[0003] The existing blocking cylinder testing machines on the market mainly conduct life tests on single-specification blocking cylinders, and it is difficult to systematically conduct comprehensive and stable life tests on multiple different specifications of heavy-duty blocking cylinders at the same time. Summary of the Invention

[0004] The purpose of the present invention is to provide a service life detection device and detection method for a blocking cylinder.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A service life detection device for a blocking cylinder includes a machine table, a load table, a circulating transmission structure, a pneumatic clutch, and a circulating drive module; the machine table successively forms a conveying layer, a testing layer, and a bearing layer from top to bottom. Two blocking seats are relatively arranged at both ends of the conveying layer of the machine table, two long bases are relatively arranged on both sides of the testing layer, and a plurality of mounting plates are arranged at intervals between both ends of the bearing layer. The number of the mounting plates is not less than two. A testing position is formed on each mounting plate in the testing layer for mounting the blocking cylinder to be detected on the testing position; a linear guide rail is installed on the top of each long base, and the load table is slidably arranged on the conveying layer along the two groups of linear guide rails;

[0007] The circulating transmission structure is arranged between the two long bases, and it includes a driving shaft and a driven shaft that are relatively rotatably arranged at both ends of the testing layer, and two groups of first chain transmission components installed between the driving shaft and the driven shaft; one end of the driving shaft passes out of one long base and is a transmission end; a transmission block connected to the load table is arranged on the upper section of the transmission chain of each first chain transmission component;

[0008] The pneumatic clutch connects the driving end of the driving shaft to the driving end of the circulating driving module, allowing the pneumatic clutch to switch between a pressure-relieved separation state and a pressure-boosted engagement state. When the pneumatic clutch is in the pressure-boosted engagement state, the circulating driving module can drive the driving shaft to rotate forward and backward, causing the transmission chain to rotate clockwise and counterclockwise, driving the load table to convey. And when about to impact the blocking cylinder, the pneumatic clutch switches to the pressure-relieved separation state, and the load table impacts the blocking cylinder by inertia.

[0009] As a further technical solution of the present invention: the circulating driving module includes a fixing frame arranged on one side of the machine table on the same side as the driving end of the driving shaft, a circulating driving motor installed on the fixing frame, and a second chain transmission assembly connecting the pneumatic clutch to the driving shaft of the circulating driving motor, for the driving shaft of the circulating driving motor to rotate, and the second chain transmission assembly drives the driving shaft to rotate with the pressure-boosted engagement state of the pneumatic clutch.

[0010] As a further technical solution of the present invention: a number of counterweight blocks are detachably installed on the load table.

[0011] As a further technical solution of the present invention: the service life detection device of the blocking cylinder includes a placement rack arranged outside the machine table for storing counterweight blocks.

[0012] As a further technical solution of the present invention: the service life detection device of the blocking cylinder includes an electric control console arranged outside the machine table for controlling the operation of the load table, the circulating transmission structure, the pneumatic clutch, and the circulating driving module.

[0013] As a further technical solution of the present invention: a number of buffer pads are provided on the surface of the blocking seat facing the load table.

[0014] As a further technical solution of the present invention: a number of caster mounting plates are spaced on the outer wall of the long base, and a braking caster is installed on each caster mounting plate.

[0015] As a further technical solution of the present invention: a number of photoelectric switches for sensing the load table are spaced on the top of any long base for sensing the displacement of the load table.

[0016] As a further technical solution of the present invention: there are three mounting plates in total, and different blocking cylinders are installed at the three test positions.

[0017] In addition, it is necessary for the present invention to provide a detection method for the service life detection device of the blocking cylinder.

[0018] A detection method for a service life detection device of a blocking cylinder includes the following steps:

[0019] First step, before detection, confirm that the three blocking cylinders to be detected are all in the initial state. The three blocking cylinders are located on the left, middle, and right sides of the test layer in sequence;

[0020] Second step, install the preset number of counterweights on the load platform according to the actual test requirements. On the touch screen of the electric control console, adjust the test speeds of the corresponding blocking cylinders respectively, and operate the manual button of the electric control console to move the load platform to the initial position on the left side of the conveying layer; press the start button, and the equipment will run automatically;

[0021] Third step, the two blocking cylinders in the middle and on the right change to the pre-blocking state as the equipment operates; the cyclic drive module starts, makes the load platform move to the right, accelerates to the test speed, and after maintaining a constant speed for a certain period of time, impacts the blocking cylinder in the middle; the load platform is blocked by the blocking cylinder in the middle, and this blocking cylinder is in the post-blocking state. After the load platform is completely stopped for 0.5S, the piston rod of this blocking cylinder retracts, and its buffer bracket falls by the torsion of the torsion spring and its own weight and returns to the initial state;

[0022] Fourth step, after the blocking cylinder in the middle returns to the initial state, the cyclic drive module restarts, makes the load platform move to the right, accelerates to the test speed, and after maintaining a constant speed for a certain period of time, impacts the blocking cylinder on the right (pre-blocking state); the load platform is blocked by this blocking cylinder, and the blocking cylinder is in the post-blocking state. After the load platform is completely stopped (1S - 2S), the piston rod of this blocking cylinder retracts, and the buffer bracket falls by the torsion of the torsion spring and its own weight and returns to the initial state;

[0023] Fifth step, after the blocking cylinder on the right returns to the initial state, the cyclic drive module restarts to make the load platform move to the right to the right stop position, the cyclic drive module stops and waits for 0.5S, and the cyclic drive module switches to reverse start, and the blocking cylinder on the left changes to the pre-blocking state;

[0024] Sixth step, the cyclic drive module makes the load platform move to the left, accelerates to the test speed, and after maintaining a constant speed for a certain period of time, impacts the blocking cylinder on the left (pre-blocking state); the load platform is blocked by this blocking cylinder, and the blocking cylinder is in the post-blocking state. After the load platform is completely stopped (1S - 2S), the piston rod of this blocking cylinder retracts, and the buffer bracket falls by the torsion of the torsion spring and its own weight and returns to the initial state;

[0025] Seventh step, after the blocking cylinder on the left returns to the initial state, the cyclic drive module restarts to make the load platform move to the left to the left initial position, the cyclic drive module stops and waits for 0.5S, and the cyclic drive module switches to forward start and repeats the third step to the seventh step to complete the cycle.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention provides a service life detection device and method for a blocking cylinder. Through the cooperation among the machine platform, the load platform, the cyclic transmission structure, the pneumatic clutch, and the cyclic drive module, it is possible to systematically and comprehensively and stably conduct life tests on multiple heavy-duty blocking cylinders of different specifications simultaneously. During continuous cyclic detection, the tests of the set number of times are finally completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic view of the first perspective of the service life detection device for the blocking cylinder.

[0028] Figure 2 It is a schematic view of the second perspective of the service life detection device for the blocking cylinder.

[0029] Figure 3 It is a sectional structure diagram of the service life detection device for the blocking cylinder DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] The following will describe in detail the specific embodiments of the present invention with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for explaining and illustrating the present invention, and are not used to limit the protection scope of the present invention.

[0031] Please refer to Figure 1 , Figure 2 and Figure 3 , a service life detection device for a blocking cylinder, comprising a machine platform 10, a load platform 20, a cyclic transmission structure 30, a pneumatic clutch 40 and a cyclic drive module 50;

[0032] The machine platform 10 successively forms a conveying layer 101, a testing layer 102 and a bearing layer 103 from top to bottom. At both ends of the conveying layer 101 of the machine platform 10, two blocking seats 11 are oppositely arranged. On both sides of the testing layer 102, two long bases 12 are oppositely arranged. Between the two ends of the bearing layer 103, a plurality of mounting plates 13 are arranged at intervals. The number of the mounting plates 13 is not less than two. In the middle of each mounting plate 13 corresponding to both sides of the testing layer 102, a testing position 131 is formed, on which a blocking cylinder to be detected can be installed, and the blocking end of the blocking cylinder penetrates out to the conveying layer 101;

[0033] On the top of each long base 12, a linear guide rail 121 is installed. The load platform 20 is slidably arranged on the conveying layer 101 along the two groups of linear guide rails 121. On both sides of the bottom surface of the load platform 20, a plurality of sliders 21 are arranged respectively, and the sliders 21 on each side correspond to a linear guide rail 121;

[0034] The cyclic transmission structure 30 is arranged between two long bases 12, and includes a driving shaft 31 and a driven shaft 32 that are relatively rotatably arranged at both ends of the test layer 102, and two groups of first chain transmission components 33 that are respectively adjacent to one long base 12 and are installed between the driving shaft 31 and the driven shaft 32; one end of the driving shaft 31 passes through a long base 12 and is a transmission end; each first chain transmission component 33 forms a transmission chain 331 that can operate as the driving shaft 31 and the driven shaft 32 rotate, and the transmission chain 331 is provided with a transmission block 332 connected to the bottom surface of the load platform 20 in the upper section.

[0035] The pneumatic clutch 40 connects the transmission end of the driving shaft 31 with the driving end of the cyclic drive module 50, and is used for the pneumatic clutch 40 to switch between a pressure-relieved separation state and a pressure-increased engagement state. When the pneumatic clutch 40 is in the pressure-increased engagement state, the cyclic drive module 50 can drive the driving shaft 31 to rotate forward and backward, so that the transmission chain 331 rotates clockwise and counterclockwise, driving the load platform 20 to circulate and convey between any two test positions 131, and when about to impact the blocking cylinder, the pneumatic clutch 40 switches to the pressure-relieved separation state, and the load platform 20 impacts the blocking cylinder by inertia.

[0036] Further, in this embodiment, the cyclic drive module 50 includes a fixing frame 51 arranged on one side of the machine table 10 on the same side as the transmission end of the driving shaft 31, a cyclic drive motor 52 installed on the fixing frame 51, and a second chain transmission component 53 connecting the pneumatic clutch 40 and the drive shaft of the cyclic drive motor 52, for the drive shaft of the cyclic drive motor 52 to rotate, so that the second chain transmission component 53 drives the driving shaft 31 to rotate along with the pressure-increased engagement state of the pneumatic clutch 40.

[0037] Further, in this embodiment, a number of counterweight blocks 201 are detachably installed on the load platform 20 to simulate different load environments and realize different kinetic energies generated by loads of different masses at different speeds.

[0038] Further, in this embodiment, the service life detection device of the blocking cylinder includes a placement rack 60 arranged outside the machine table 10 for storing the counterweight blocks 201 to facilitate adjusting the number of counterweight blocks 201 on the load platform 20.

[0039] Further, in this embodiment, the service life detection device of the blocking cylinder includes an electric control console arranged outside the machine table 10 for controlling the operation of the load platform 20, the cyclic transmission structure 30, the pneumatic clutch 40, and the cyclic drive module 50, and realizing functions such as speed control, parameter setting, abnormal alarm, and safety protection of the service life detection device of the blocking cylinder.

[0040] Further, in this embodiment, a number of buffer pads 111 are provided on the side of the blocking seat 11 facing the load platform 20, which play a protective role.

[0041] Further, in this embodiment, a number of reinforcing rods are provided between the two long bases 12 of the test layer 102, and the two ends of each reinforcing rod are relatively connected to the two long bases 12 to improve the overall strength of the machine platform 10.

[0042] Further, in this embodiment, a number of caster mounting plates 71 are provided on the outer wall of the long base 12 at intervals, and a braking caster 72 is installed on each caster mounting plate 71.

[0043] Further, in this embodiment, there are three mounting plates 13 in total. By installing two blocking cylinders at any two test positions 131, the life tests of the two blocking cylinders can be carried out simultaneously. Or blocking cylinders can be installed at all three test positions 131 to carry out the life tests of the three blocking cylinders simultaneously.

[0044] Further, in this embodiment, a number of photoelectric switches 73 for sensing the load platform 20 are provided on the top of any long base 12 at intervals to sense the displacement of the load platform 20.

[0045] Further, the service life detection device for the blocking cylinder is applicable to the life detection of multiple types of blocking cylinders. Among them, MTDAQ50x50-W1000A(1T), MTDAQ63x50-W2000A(2T), and MTDAQ32x40-W300A(300KG) have better detection effects.

[0046] It can be understood that the detection method of the service life detection device for the blocking cylinder includes the following steps:

[0047] The first step, before detection, confirm that the three blocking cylinders to be detected are all in the initial state, and the three blocking cylinders are located on the left, middle and right sides of the test layer 102 in sequence;

[0048] The second step, according to the actual test, install the preset number of counterweights 201 on the load platform 20 as required, adjust the test speed of the corresponding blocking cylinder respectively on the touch screen of the electric control console, and operate the manual button of the electric control console to move the load platform 20 to the initial position on the left side of the conveying layer 101; press the start button, and the device will run automatically;

[0049] Step 3: The two blocking cylinders in the middle and on the right change to the pre-blocking state as the equipment operates; the cyclic drive module 50 starts, causing the load stage 20 to move to the right, accelerate to the test speed, and maintain a constant speed for a certain period of time before impacting the blocking cylinder in the middle; the load stage 20 is blocked by the blocking cylinder in the middle, and this blocking cylinder is in the post-blocking state. After the load stage 20 is completely stopped for 0.5 s, the piston rod of this blocking cylinder retracts, and its buffer bracket falls due to the torsion of the torsion spring and its own weight, returning to the initial state;

[0050] Step 4: After the blocking cylinder in the middle returns to the initial state, the cyclic drive module 50 restarts, causing the load stage 20 to move to the right, accelerate to the test speed, and maintain a constant speed for a certain period of time before impacting the pre-blocking state of the blocking cylinder on the right; the load stage 20 is blocked by this blocking cylinder, and the blocking cylinder is in the post-blocking state. After the load stage 20 is completely stopped for 1 s - 2 s, the piston rod of this blocking cylinder retracts, and the buffer bracket falls due to the torsion of the torsion spring and its own weight, returning to the initial state;

[0051] Step 5: After the blocking cylinder on the right returns to the initial state, the cyclic drive module 50 restarts to move the load stage 20 to the right stop position, the cyclic drive module 50 stops and waits for 0.5 s, and the cyclic drive module 50 switches to reverse start, and the blocking cylinder on the left changes to the pre-blocking state;

[0052] Step 6: The cyclic drive module 50 causes the load stage 20 to move to the left, accelerate to the test speed, and maintain a constant speed for a certain period of time before impacting the pre-blocking state of the blocking cylinder on the left; the load stage 20 is blocked by this blocking cylinder, and the blocking cylinder is in the post-blocking state. After the load stage 20 is completely stopped for (1 s - 2 s), the piston rod of this blocking cylinder retracts, and the buffer bracket falls due to the torsion of the torsion spring and its own weight, returning to the initial state;

[0053] Step 7: After the blocking cylinder on the left returns to the initial state, the cyclic drive module 50 restarts to move the load stage 20 to the left to the left initial position, the cyclic drive module 50 stops and waits for 0.5 s, and the cyclic drive module 50 switches to forward start and repeats Step 3 to Step 7 to complete the cycle.

[0054] In this way, the service life detection of the blocking cylinder is completed. Among them, before the load stage 20 impacts the blocking cylinder while maintaining the test speed, the pneumatic clutch 40 changes to the pressure-relieving and disengaged state, causing the load stage 20 to impact the blocking cylinder by inertia. After the blocking cylinder after blocking changes to the initial state, the pneumatic clutch 40 changes to the pressure-increasing and engaged state, waiting for the cyclic drive module 50 to complete the subsequent actions.

[0055] When performing the service life test on MTDAQ50x50-W1000A(1T), MTDAQ63x50-W2000A(2T), and MTDAQ32x40-W300A(300KG) according to the above method, MTDAQ50x50-W1000A(1T) is the blocking cylinder on the right, MTDAQ63x50-W2000A(2T) is the blocking cylinder on the left, and MTDAQ32x40-W300A(300KG) is the blocking cylinder in the middle. The load on the load table 20 is 500 kg. When performing bidirectional movement under the action of the cyclic drive module 50, its maximum test speed is 1.5 m / s. The speed at which the load impacts the blocking cylinder is adjustable within 0 - 1.5 m / s. The blocking cylinders of different specifications are impacted at different speeds. After being impacted, the blocking cylinder changes from the blocking state that can be impacted by the load height to the initial state that cannot be impacted. After the load reaches the corresponding sensor point, under the control of the electrical system, the blocking cylinder is modified back to the blocking state that can be impacted and waits for the next impact. This process repeats continuously until the test of the set number of times is finally completed.

[0056] In summary, the service life detection device and method for a blocking cylinder of the present invention can systematically and comprehensively perform stable life tests on multiple heavy-duty blocking cylinders of different specifications simultaneously through the cooperation among the machine table 10, the load table 20, the cyclic transmission structure 30, the pneumatic clutch 40, and the cyclic drive module 50. During the continuous cyclic detection, the test of the set number of times is finally completed.

[0057] As long as it does not violate the idea of the present invention, any combination of various different embodiments of the present invention shall be regarded as the content disclosed in the present invention; within the scope of the technical concept of the present invention, any simple variation of the technical solution and any combination of different embodiments that do not violate the idea of the present invention shall be within the protection scope of the present invention.

Claims

1. A detection device for the service life of a blocking cylinder, characterized in that: It includes a machine platform (10), a load platform (20), a circulating transmission structure (30), a pneumatic clutch (40) and a circulating drive module (50); the machine platform (10) successively forms a conveying layer (101), a testing layer (102) and a bearing layer (103) from top to bottom. At both ends of the conveying layer (101) of the machine platform (10), two blocking seats (11) are oppositely arranged. On both sides of the testing layer (102), two long bases (12) are oppositely arranged. Between the two ends of the bearing layer (103), a number of mounting plates (13) are arranged at intervals. The number of the mounting plates (13) is not less than two. Each mounting plate (13) on the testing layer (102) forms a testing position (131) for installing a blocking cylinder to be detected on the testing position (131); at the top of each long base (12), a linear guide rail (121) is installed, and the load platform (20) is slidably arranged on the conveying layer (101) along the two groups of linear guide rails (121). The circulating transmission structure (30) is arranged between the two long bases (12), and it includes a driving shaft (31) and a driven shaft (32) which are oppositely rotatably arranged at both ends of the testing layer (102), and two groups of first chain transmission components (33) installed between the driving shaft (31) and the driven shaft (32); one end of the driving shaft (31) passes through a long base (12) and is the transmission end; on the upper section of the transmission chain (331) of each first chain transmission component (33), a transmission block (332) connected to the load platform (20) is arranged. The pneumatic clutch (40) connects the transmission end of the driving shaft (31) with the driving end of the circulating drive module (50), and the pneumatic clutch (40) is switched between a pressure-relief separation state and a pressure-boost suction state. When the pneumatic clutch (40) is in the pressure-boost suction state, the circulating drive module (50) can drive the driving shaft (31) to rotate forward and backward, so that the transmission chain (331) rotates clockwise and counterclockwise, driving the load platform (20) to convey. And when about to impact the blocking cylinder, the pneumatic clutch (40) is switched to the pressure-relief separation state, and the load platform (20) impacts the blocking cylinder by inertia.

2. The service life detection device for the blocking cylinder according to claim 1, wherein: The circulating drive module (50) includes a fixing frame (51) arranged on one side of the machine platform (10) on the same side as the transmission end of the driving shaft (31), a circulating drive motor (52) installed on the fixing frame (51), and a second chain transmission component (53) connecting the pneumatic clutch (40) with the drive shaft of the circulating drive motor (52), so that the drive shaft of the circulating drive motor (52) rotates, and the second chain transmission component (53) drives the driving shaft (31) to rotate along with the pressure-boost suction state of the pneumatic clutch (40).

3. The service life detection device for the blocking cylinder according to claim 1, characterized in that: A number of counterweight blocks (201) can be disassembled and installed on the load platform (20).

4. The service life detection device for the blocking cylinder according to claim 3, wherein: It includes a placing rack (60) arranged outside the machine platform (10) for storing the counterweight blocks (201).

5. The service life detection device for the blocking cylinder according to claim 1, wherein: It includes an electric control console () arranged outside the machine platform (10) for controlling the operations of the load platform (20), the circulating transmission structure (30), the pneumatic clutch (40) and the circulating drive module (50).

6. The service life detection device for the blocking cylinder according to claim 1, characterized in that: On one side of the blocking seat (11) facing the load platform (20), a number of buffer pads (111) are provided.

7. The service life detection device for the blocking cylinder according to claim 1, wherein: On the outer wall of the long base (12), a number of caster mounting plates (71) are provided at intervals, and a braking caster (72) is installed on each caster mounting plate (71).

8. The service life detection device for the blocking cylinder according to claim 1, wherein: On the top of any long base (12), a number of photoelectric switches (73) for sensing the load platform (20) are provided at intervals to sense the displacement of the load platform (20).

9. The service life detection device for a blocking cylinder according to any one of claims 1-8, characterized in that: There are three mounting plates (13) in total, and different blocking cylinders are installed at the three test positions (131).

10. A detection method for a service life detection device of a blocking cylinder as described in claim 9, characterized in that, Including the following steps: First step, before detection, confirm that the three blocking cylinders to be detected are all in the initial state. The three blocking cylinders are located on the left, middle, and right sides of the test layer (102) in sequence. Second step, according to the actual test, install a preset number of counterweight blocks (201) on the load platform (20) as required. Adjust the test speeds of the corresponding blocking cylinders respectively on the touch screen of the electric control console, and operate the manual button of the electric control console to move the load platform (20) to the initial position on the left side of the conveying layer (101); press the start button, and the equipment runs automatically. Third step, the two blocking cylinders in the middle and on the right become the pre-blocking state as the equipment operates; the cyclic drive module (50) starts, making the load platform (20) move to the right, accelerate to the test speed, and maintain a constant speed for a certain period of time before impacting the blocking cylinder in the middle; the load platform (20) is blocked and stopped by the blocking cylinder in the middle. This blocking cylinder is in the post-blocking state. After the load platform (20) is completely blocked for 0.5S, the cylinder piston rod of this blocking cylinder retracts, and its buffer bracket falls down by the torsion of the torsion spring and its own weight and returns to the initial state. Fourth step, after the blocking cylinder in the middle returns to the initial state, the cyclic drive module (50) restarts, making the load platform (20) move to the right, accelerate to the test speed, and maintain a constant speed for a certain period of time before impacting the blocking cylinder on the right (pre-blocking state). The load platform (20) is blocked and stopped by this blocking cylinder. The blocking cylinder is in the post-blocking state. After the load platform (20) is completely blocked for (1S - 2S), the cylinder piston rod of this blocking cylinder retracts, and the buffer bracket falls down by the torsion of the torsion spring and its own weight and returns to the initial state. Fifth step, after the blocking cylinder on the right returns to the initial state, the cyclic drive module (50) restarts to make the load platform (20) move to the right to the right stop position. The cyclic drive module (50) stops and waits for 0.5S. The cyclic drive module (50) switches to reverse start, and the blocking cylinder on the left becomes the pre-blocking state. Sixth step, the cyclic drive module (50) makes the load platform (20) move to the left, accelerate to the test speed, and maintain a constant speed for a certain period of time before impacting the blocking cylinder on the left (pre-blocking state); the load platform (20) is blocked and stopped by this blocking cylinder. The blocking cylinder is in the post-blocking state. After the load platform (20) is completely blocked for (1S - 2S), the cylinder piston rod of this blocking cylinder retracts, and the buffer bracket falls down by the torsion of the torsion spring and its own weight and returns to the initial state. In the seventh step, after the blocking cylinder on the left returns to the initial state, the cyclic drive module (50) restarts to move the load table (20) to the left to the initial position on the left. The cyclic drive module (50) stops and waits for 0.5S, then the cyclic drive module (50) switches to forward rotation start and repeats the third step to the seventh step to complete the cycle.

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