Device for testing wear resistance and durability of automobile safety belt

Abstract

The invention discloses an automobile safety belt wear resistance and durability testing device which comprises a rack, a vertical reciprocating motion mechanism, a plurality of first testing stations, a plurality of second testing stations and weights. When the first test station is used for testing, the safety belt penetrates through the first friction test return buckle to be folded; the second test station is provided with a second guide wheel group, a hexagonal friction rod, a friction roller and a second friction test return buckle, and when the second test station is used for testing, the safety belt passes through the hexagonal friction rod, the friction roller or the second friction test return buckle under the guidance of the second guide wheel group; one end of the safety belt is clamped on a clamp of the vertical reciprocating motion mechanism, and the other end hangs a weight. According to the invention, two working conditions can be tested at the same time during testing, and the same working condition can be tested at multiple stations, so that multiple safety belts can be tested synchronously, and the testing efficiency is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of automotive seat belt testing technology, specifically to a device for testing the abrasion resistance and durability of automotive seat belts. Background Technology

[0002] Currently, wear resistance and durability are among the key indicators in the production and quality testing of automotive seat belts.

[0003] Traditional seatbelt abrasion testing equipment typically employs a single-station design, limiting testing to a single, fixed friction condition. It is designed to meet a specific standard or testing procedure. For example, a reciprocating mechanism at a fixed frequency drives a friction wheel or block to apply pressure and friction to the seatbelt, recording the number of friction cycles until the seatbelt fails. Traditional seatbelt abrasion testing equipment can only simulate one friction condition (such as friction under constant pressure), making it suitable for single testing tasks. However, it suffers from low testing efficiency, making it difficult to meet the needs of batch testing and diverse operating conditions. Furthermore, prolonged operation can lead to component fatigue and subsequent failure, affecting test accuracy.

[0004] To further improve testing efficiency, a multi-station safety belt overall performance testing device is provided by patent number CN202023193113.8. It includes multiple testing stations and can test multiple safety belt samples simultaneously. However, all samples work under the same friction conditions, which lacks flexibility and cannot adapt to complex standard testing requirements.

[0005] In addition, some high-end laboratories or research institutions have begun to try to build integrated testing platforms, integrating multiple testing modules into one device to achieve different types of tests (such as tension, torsion, friction, etc.). However, such devices are often bulky, expensive, have complex control systems, and high operating thresholds. They are mainly used for scientific research purposes and are not suitable for small and medium-sized enterprises, making them difficult to popularize and promote. Summary of the Invention

[0006] The purpose of this invention is to provide a device for testing the abrasion resistance and durability of automotive seat belts.

[0007] The objective of this invention is achieved through the following technical solution:

[0008] A device for testing the wear resistance and durability of automotive seat belts, characterized in that it includes a frame, a vertical reciprocating motion mechanism, multiple first test stations, multiple second test stations, and a set weight. A test platform is provided on the top of the frame. The multiple first test stations and multiple second test stations are arranged side-by-side on both sides of the test platform. The vertical reciprocating motion mechanism is located in the middle of the test platform and has clamps on it. Each first test station has a first guide wheel assembly and a first friction test buckle located away from the center of the test platform. When testing at the first test station, the seat belt, guided by the first guide wheel assembly, passes through the first friction test buckle and folds in half. The friction test buckle has a set horizontal angle between the two folded sections. The second test station is equipped with a second guide wheel group, a hexagonal friction rod, a friction roller, and a second friction test buckle. When testing at the second test station, the safety belt is guided by the second guide wheel group to pass through the hexagonal friction rod, the friction roller, or the second friction test buckle. When the safety belt passes over the friction roller for testing, the two folded sections of the safety belt at the friction roller position have a 90° angle. When the safety belt passes over the second friction test buckle for testing, the section of the safety belt in front of the second friction test buckle has a set spatial angle. During the test, one end of the safety belt is clamped on the fixture, and the other end is suspended by a weight.

[0009] A further technical solution of the present invention is as follows: the first guide wheel group includes a first intermediate guide wheel and an offset guide wheel. The first intermediate guide wheel is located in the middle of the test platform, and the offset guide wheel is located between the first intermediate guide wheel and the first friction test buckle. The installation positions of the first intermediate guide wheel and the first friction test buckle are on a straight line, but the installation position of the offset guide wheel is offset to one side relative to the straight line. The installation positions of the first friction test buckle and the offset guide wheel are rotated by a set angle. A first through hole for the safety belt to pass through is provided on the test platform at the position corresponding to the offset guide wheel.

[0010] A further technical solution of the present invention is as follows: the second guide wheel assembly includes a second intermediate guide wheel and a spatial angle guide wheel. The second intermediate guide wheel is located in the middle of the test platform. A second through hole for the safety belt to pass through is provided on the test platform away from the second intermediate guide wheel. The hexagonal friction rod, the friction roller, and the second friction test buckle are all located next to the second through hole. The installation height of the friction roller is equal to the installation height of the second intermediate guide wheel. The spatial angle guide wheel is located between the second friction test buckle and the second intermediate guide wheel. The installation orientation of the spatial angle guide wheel is rotated by a set angle. When the safety belt passes through the second friction test buckle for testing, the safety belt also passes under the spatial angle guide wheel, so that the section of the installation belt located between the spatial angle guide wheel and the second friction test buckle has a set spatial angle.

[0011] A further technical solution of the present invention is as follows: the test platform is provided with a central through hole for the safety belt to pass through, and the vertical reciprocating motion mechanism is located below the central through hole.

[0012] A further technical solution of the present invention is as follows: a first backlash mounting bracket is provided on the first test station, the first backlash mounting bracket is fixedly installed on the test table, and the first friction test backlash is rotatably connected to the first backlash mounting bracket.

[0013] A further technical solution of the present invention is as follows: a second backing mounting bracket and a fixing frame are provided on the second test station. The second backing mounting bracket and the fixing frame are both fixedly installed on the test table. A mounting plate is provided on the second backing mounting bracket corresponding to the second friction test backing. The second friction test backing is rotatably connected to the mounting plate. The hexagonal friction rod and the friction roller are fixedly installed on the fixing frame.

[0014] A further technical solution of the present invention is that the testing device also includes an electrical control box, which is electrically connected to the vertical reciprocating motion mechanism.

[0015] A further technical solution of the present invention is as follows: the testing device is used in conjunction with an environmental control test chamber in which the internal temperature and humidity can be varied. The entire frame is placed in the environmental control test chamber, but the electrical control part of the testing device is located outside the environmental control test chamber.

[0016] A further technical solution of the present invention is as follows: the testing device is used in conjunction with an aging test chamber with metal halide lamps installed inside, the entire frame is placed in the aging test chamber, but the electrical control part of the testing device is located outside the aging test chamber.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. This invention can test seat belts under four working conditions as needed, offering flexibility and comprehensive testing capabilities. Furthermore, it can simultaneously perform tests under two working conditions at multiple workstations, enabling synchronous testing of multiple seat belts and significantly improving testing efficiency.

[0019] 2. This invention can also be used in conjunction with an environmental control test chamber or an aging test chamber with metal halide lamps to simulate actual usage scenarios. Attached Figure Description

[0020] Figure 1 This is one of the perspective schematic diagrams of the testing device according to an embodiment of the present invention;

[0021] Figure 2 This is a second perspective view of the testing device according to an embodiment of the present invention;

[0022] Figure 3This is a schematic diagram of the test device according to an embodiment of the present invention with the opening and closing door hidden.

[0023] Figure 4 This is a schematic diagram of the structure of the second friction test rebate and the second rebate mounting bracket according to an embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of the structure of the first back-knot mounting bracket and the first friction test back-knot according to an embodiment of the present invention;

[0025] Figure 6 This is a schematic diagram of the fixture according to an embodiment of the present invention;

[0026] Figure 7 This is a schematic diagram of the vertical reciprocating motion mechanism according to an embodiment of the present invention;

[0027] Figure 8 This is a schematic diagram of the structure of the testing device according to an embodiment of the present invention when the second testing station selects the first working condition of the embodiment to test the seat belt during the testing process;

[0028] Figure 9 This is a schematic diagram of the structure of the testing device according to an embodiment of the present invention when the second testing station selects the second working condition of the embodiment to test the seat belt during the testing process;

[0029] Figure 10 This is a schematic diagram of the structure of the testing device according to an embodiment of the present invention when the second testing station selects the third working condition of the embodiment to test the seat belt during the testing process;

[0030] Figure 11 This is a schematic diagram of the state of the safety belt being tested at the first test station according to an embodiment of the present invention;

[0031] Figure 12 This is a schematic diagram of the state of the second test station in the first working condition of the embodiment of the present invention when testing the seat belt.

[0032] Meaning of the labels in the attached diagram:

[0033] 1-Frame; 1.1-Test platform; 1.2-Connecting hole; 1.3-Second through hole; 1.4-Central through hole; 1.5-First through hole; 2-Clamp; 2.1-Fixing clamp; 2.2-Guide block; 2.3-Slide rod; 2.4-Fixing bolt; 2.5-Fixing nut; 2.6-Handle; 2.7-Rotating component; 2.8-Right-angle bend; 2.9-Fixing plate; 2.10-Clamp; 3-Cast; 4-Second backlash mounting bracket; 4.1-Mounting plate; 5-Second friction test backlash; 5.1-Through hole for second friction test backlash; 6 - Fixed frame; 7- Hexagonal friction rod; 8- Spatial angle guide wheel; 9- Mounting base; 10- First intermediate guide wheel; 11- Second intermediate guide wheel; 12- Offset guide wheel; 13- First backlash mounting bracket; 14- First friction test backlash; 14.1- Through hole for first friction test backlash; 15- Electrical control box; 16- Sealing plate; 17- Lifting platform; 18- Opening and closing door; 19- Vertical reciprocating motion mechanism; 19.1- Mounting frame; 19.2- Vertical slide rail; 19.3- Motor; 20- Safety belt; 20.1- Hanging hole; 21- Friction rod; 22- Weight. Detailed Implementation

[0034] The present invention will be further described below with reference to embodiments.

[0035] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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. Therefore, they should not be construed as limiting this invention.

[0036] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0037] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0038] Example:

[0039] like Figures 1 to 7The image shows the abrasion resistance and durability testing device for automotive seat belts in this embodiment, which includes a frame 1, a vertical reciprocating motion mechanism 19, three first testing stations, three second testing stations, multiple weights 22 with set weights, and an electrical control box 15.

[0040] In this embodiment, the frame 1 is a cuboid metal frame. Opening doors 18 are provided on both sides of the frame 1. One end of the frame 1 is covered with a sealing plate 16, and the other end is open, with the electrical control box 15 placed inside the opening. The electrical control box 15 is electrically connected to the vertical reciprocating motion mechanism 19, and the testing is controlled through the electrical control box 15. Casters 3 are provided under the frame 1 for easy movement of the device. A test platform 1.1 is provided on the top of the frame 1. Three first test stations and three second test stations are respectively located on both sides of the test platform 1.1, arranged sequentially from front to back. Therefore, this embodiment has a total of six stations, enabling simultaneous testing of six safety belts 20. A central through hole 1.4 for the safety belt 20 to pass through is provided in the middle of the test platform 1.1. A vertical reciprocating motion mechanism 19 is installed in the frame 1 and located below the central through hole 1.4. A clamp 2 is provided on the vertical reciprocating motion mechanism 19. The clamp 2 is driven by the vertical reciprocating motion mechanism 19 to reciprocate in the vertical direction.

[0041] The first test station in this embodiment is provided with a first guide wheel group, a first friction test buckle 14, and a first buckle mounting bracket 13. The first guide wheel group includes a first intermediate guide wheel 10 and an offset guide wheel 12. The first intermediate guide wheel 10 is located in the middle of the test platform 1.1, near the edge of the central through hole 1.4. The first friction test buckle 14 is rotatably connected to the first buckle mounting bracket 13 by a pin and is fixedly installed in a position away from the middle of the test platform 1.1 by the first buckle mounting bracket 13. The offset guide wheel 12 is installed between the first intermediate guide wheel 10 and the first friction test buckle 14. A first through hole 1.5 is provided on the test platform 1.1 at the position corresponding to the offset guide wheel 12 for the safety belt 20 to pass through.

[0042] The first test station can be used to test a specific working condition, such as... Figure 8 and Figure 11As shown, during the test, the safety belt 20 passes over the first intermediate guide wheel 10, through the through hole 14.1 of the first friction test buckle, and over the offset guide wheel 12 in sequence. The safety belt 20 is folded in half at the friction test buckle 14 position. One end of the safety belt 20 passes downward through the central through hole 1.4 and is clamped by the clamp 2. The other end of the safety belt 20 passes downward through the first through hole 1.5, and a hanging hole 20.1 is provided at this end of the safety belt 20. The weight 22 of the corresponding weight is suspended through the hanging hole 20.1. The installation positions of the first intermediate guide wheel 10 and the first friction test buckle 14 are on a straight line, but the installation position of the offset guide wheel 12 is offset to one side relative to the straight line where the first intermediate guide wheel 10 and the first friction test buckle 14 are located. The installation orientation of the first friction test buckle 14 and the offset guide wheel 12 is rotated by a set angle, which makes the section of the seat belt 20 between the first intermediate guide wheel 10 and the first friction test buckle 14 and the section between the first friction test buckle 14 and the offset guide wheel 12 have a horizontal angle of 30°.

[0043] The first friction test buckle 14 simulates the friction of the seat belt buckle 20 against the seat belt itself. In this embodiment, the first friction test buckle 14 is provided with a square perforation, and a friction bar is formed at the front of the first friction test buckle 14.

[0044] The second testing station in this embodiment is equipped with a second guide wheel assembly, a hexagonal friction rod 7, a friction roller 21, a second friction test buckle 5, a second buckle mounting bracket 4, and a fixing frame 6. The second guide wheel assembly includes a second intermediate guide wheel 11 and a spatial angle guide wheel 8. The second intermediate guide wheel 11 is located in the middle of the testing platform 1.1, near the edge of the central through hole 1.4. A second through hole 1.3 for the safety belt 20 to pass through is provided on the testing platform 1.1 at a position away from the second intermediate guide wheel 11.

[0045] In this embodiment, a fixing bracket 6 is provided for each of the hexagonal friction rod 7 and friction roller 21. The hexagonal friction rod 7 and friction roller 21 are horizontally fixed on the fixing bracket 6. The hexagonal friction rod 7 and friction roller 21 can be fixed next to the second through hole 1.3 through the fixing bracket 6. The installation of the hexagonal friction rod 7 and friction roller 21 is selected according to the requirements of the test conditions. The installation height of the friction roller 21 is basically equal to the installation height of the second intermediate guide wheel 11, and the installation height of the hexagonal friction rod 7 is higher than that of the friction roller 21. The cross-section of the hexagonal friction rod 7 is hexagonal, and the cross-section of the friction roller 21 is circular. The surface is used for friction with the seat belt 20. The spatial angle guide wheel 8 is located between the second friction test buckle 5 and the second intermediate guide wheel 11. The length of the spatial angle guide wheel 8 is significantly longer than the length of the other guide wheels. The installation position of the spatial angle guide wheel 8 is rotated by a set angle, and the seat belt 20 is guided to form a spatial angle through the spatial angle guide wheel 8. Figure 4As shown, the second friction test rebate 5 is provided with a mounting plate 4.1 on the second rebate mounting bracket 4. The mounting plate 4.1 extends downward and is inclined towards the middle of the test platform 1.1. The second friction test rebate 5 is rotatably connected to the lower end of the mounting plate 4.1 by a pin. The second friction test rebate 5 is installed next to the second through hole 1.3 through the second rebate mounting bracket 4. The installation height of the second friction test rebate 5 is higher than that of the guide wheel. In this embodiment, the second friction test rebate 5 is provided with a long strip-shaped through hole.

[0046] The second test station allows for testing under three different conditions. The first condition is: Figure 8 As shown, one end of the safety belt 20 passes downward through the central through hole 1.4 and is clamped onto the clamp 2. The other end of the safety belt 20 passes over the top of the second intermediate guide wheel 11, then passes under the space angle guide wheel 8, passes through the through hole 5.1 of the second friction test buckle, and then passes vertically downward through the second through hole 1.3. A weight 22 of corresponding weight is suspended on the hanging hole 20.1 at this end. Under the guidance of the space angle guide wheel 8, the section of the safety belt 20 located between the space angle guide wheel 8 and the second friction test buckle 5 has a set space angle. The second working condition is: as follows Figure 9 As shown, one end of the safety belt 20 passes downward through the central through hole 1.4 and is clamped onto the clamp 2. The other end of the safety belt 20 passes over the second intermediate guide wheel 11 (here, a second intermediate guide wheel 11 and mounting base of a different size are selected for the first working condition), then passes over the friction roller 21, and then passes vertically downward through the second through hole 1.3. A weight 22 of corresponding weight is suspended on the hanging hole 20.1 at this end. The portion of the safety belt 20 located between the second intermediate guide wheel 11 and the friction roller 21 is in a horizontal state, that is, at a 90° angle to the vertical portion. The third working condition is: as shown in the figure. Figure 10 As shown, one end of the safety belt 20 passes downward through the central through hole 1.4 and is clamped on the clamp 2. The other end of the safety belt 20 passes over the second intermediate guide wheel 11 (here, a second intermediate guide wheel 11 and mounting base of different sizes for the first working condition are selected), then passes over the hexagonal friction rod 7, and then passes vertically downward through the second through hole 1.3. A weight 22 of corresponding weight is suspended on the hanging hole 20.1 at this end.

[0047] In the above description, the first testing station can perform one type of test, and the second testing station can perform three types of tests. Therefore, the testing device in this embodiment can perform a total of four types of tests on the seat belt 20. During the test, the first and second testing stations can test the seat belts simultaneously, meaning six seat belts can be tested at the same time, with the second testing station selecting one of the specified types of tests.

[0048] The aforementioned spatial angles are specifically: such as Figure 12 As shown, the projection line of the section of the mounting belt 20 located between the spatial angle guide wheel 8 and the second friction test buckle 5 on the horizontal plane forms an angle of 20°±5° with the horizontal part of the seat belt, and the projection line on the vertical plane also forms an angle of 20°±5° with the horizontal part of the seat belt.

[0049] The installation structure of the guide wheel is as follows: a mounting base 9 is fixedly provided on the test platform 1.1 at the position corresponding to the guide wheel. The guide wheel is rotatably mounted on the mounting base 9 through a rotating shaft, and the guide wheel is in a horizontal state.

[0050] The vertical reciprocating motion mechanism 19 in this embodiment adopts a conventional lead screw structure, and its general structure is as follows: Figure 7 As shown, the vertical reciprocating motion mechanism 19 is fixedly mounted on the frame 1 via a mounting bracket 19.1. A lifting platform 17 is slidably connected to the vertical slide rail 19.2 of the mounting bracket 19.1. The clamp 2 is mounted on the lifting platform 17. A lead screw is provided inside the mounting bracket 19.1. A nut is provided on the lifting platform 17. The nut is threadedly connected to the lead screw. The lower end of the lead screw is connected to the motor 19.3. The motor 19.3 drives the lead screw to rotate, thereby driving the lifting platform 17 and the clamp 2 to move up and down.

[0051] like Figure 6 As shown, the clamp 2 in this embodiment includes a fixed clamping plate 2.1 and three sets of clamping assemblies located in front of the fixed clamping plate 2.1. The clamping assemblies specifically include a guide block 2.2, a fixed plate 2.9, a fixing bolt 2.4, a fixing nut 2.5, a sliding rod 2.3, a handle 2.6, and a rotating component 2.7. The fixed plate 2.9 is fixedly installed away from the fixed clamping plate 2.1. The guide block 2.2 is located between the fixed clamping plate 2.1 and the fixed plate 2.9. The fixing bolt 2.4 passes through the fixed plate 2.9 and is locked by the fixing nut 2.5. The sliding rod 2.3... The bolt 2.4 slides through the central hole, and the slide rod 2.3 passes through the sliding hole on the guide block 2.2. A clamp 2.10 is provided at the end of the slide rod 2.3 near the fixed clamping plate 2.1. The end of the safety belt 20 is clamped between the clamp 2.10 and the fixed clamping plate 2.1. The handle 2.6 has a right-angle bend 2.8, which is rotatably connected to the other end of the slide rod 2.3 via a connecting pin. Both ends of the rotating part 2.7 are rotatably connected to the fixed bolt 2.4 and the bend of the handle 2.6 via connecting pins, respectively. In use, rotating the handle 2.6 causes the slide rod 2.3 to slide, thereby pressing the end of the safety belt 20 onto the fixed clamping plate 2.1 via the clamp 2.10. The operation is convenient and quick.

[0052] This embodiment can also be used in conjunction with an environmental control test chamber with variable internal temperature and humidity or an aging test chamber equipped with metal halide lamps. During testing, the entire frame is placed inside the environmental control test chamber or aging test chamber, while the electrical control box is placed outside. The environmental control test chamber heats or cools the internal temperature to simulate different usage scenarios at different temperatures, while the aging test chamber uses metal halide lamps to simulate aging under sunlight.

[0053] In this embodiment, both the first and second test stations are progressively higher from front to back, so that the portion of the safety belt 20 located above the test platform 1.1 during testing is progressively higher from front to back.

[0054] In this embodiment, a plurality of connection holes 1.2 arranged in a matrix are provided on the test platform 1.1. The first back-fastening mounting bracket 13, the second back-fastening mounting bracket 4, the fixing bracket 6, and the mounting base 9 are connected to the corresponding connection holes 1.2 by bolts.

[0055] In this embodiment, the testing device can be used to install safety belts 20 at the first testing station for testing under a horizontal angle of 30°. Safety belts 20 can also be installed at the second testing station, and the testing can be performed under one of the conditions at the second testing station as needed. During the test, the vertical reciprocating motion mechanism 19 drives the safety belts 20 to move simultaneously, causing them to rub against corresponding friction components, thus testing the wear resistance and durability of the safety belts 20. The testing device of this invention can significantly improve testing efficiency without increasing equipment size or operational complexity, meeting the needs of batch sample testing.

[0056] In this embodiment, the selection of motors, transmission components, friction components, etc. adopts highly durable materials and structures, and the control box 15 is selected with a control system that has strong anti-interference ability and better heat dissipation mechanism, thereby extending the service life of the test device and reducing the failure rate.

[0057] The above embodiments of the present invention are not intended to limit the scope of protection of the present invention. The implementation of the present invention is not limited thereto. All other modifications, substitutions or alterations made to the above structure of the present invention based on the above content of the present invention, in accordance with ordinary technical knowledge and common practice in the field, without departing from the basic technical idea of ​​the present invention, shall fall within the scope of protection of the present invention.

Claims

1. A device for testing the abrasion resistance and durability of automotive seat belts, characterized in that: The device includes a frame, a vertical reciprocating motion mechanism, multiple first test stations, multiple second test stations, and a weight with a set weight. A test platform is provided on top of the frame. The multiple first test stations and multiple second test stations are arranged side-by-side on both sides of the test platform. The vertical reciprocating motion mechanism is located in the center of the test platform and has a clamp. Each first test station has a first guide wheel assembly and a first friction test buckle located away from the center of the test platform. When testing at the first test station, the safety belt, guided by the first guide wheel assembly, passes through the first friction test buckle and folds in half. The safety belt is positioned at the first friction test buckle. The two folded sections have a set horizontal angle between them; the second test station is equipped with a second guide wheel group, a hexagonal friction rod, a friction roller, and a second friction test buckle. When testing at the second test station, the safety belt is guided by the second guide wheel group to pass through the hexagonal friction rod, the friction roller, or the second friction test buckle. When the safety belt passes over the friction roller for testing, the two folded sections of the safety belt have a 90° angle between them. When the safety belt passes over the second friction test buckle for testing, the section of the safety belt in front of the second friction test buckle has a set spatial angle. During the test, one end of the safety belt is clamped on the fixture, and the other end is suspended from the weight.

2. The automotive seat belt abrasion resistance and durability testing device according to claim 1, characterized in that: The first guide wheel assembly includes a first intermediate guide wheel and an offset guide wheel. The first intermediate guide wheel is located in the middle of the test platform. The offset guide wheel is located between the first intermediate guide wheel and the first friction test buckle. The installation positions of the first intermediate guide wheel and the first friction test buckle are on a straight line, but the installation position of the offset guide wheel is offset to one side relative to the straight line. The installation orientations of the first friction test buckle and the offset guide wheel are rotated by a set angle. A first through hole for the safety belt to pass through is provided on the test platform corresponding to the position of the offset guide wheel.

3. The automotive seat belt abrasion resistance and durability testing device according to claim 1, characterized in that: The second guide wheel assembly includes a second intermediate guide wheel and a spatial angle guide wheel. The second intermediate guide wheel is located in the center of the test platform. A second through hole for the safety belt to pass through is provided on the test platform away from the second intermediate guide wheel. The hexagonal friction rod, friction roller, and second friction test buckle are all located next to the second through hole. The installation height of the friction roller is equal to the installation height of the second intermediate guide wheel. The spatial angle guide wheel is located between the second friction test buckle and the second intermediate guide wheel. The installation orientation of the spatial angle guide wheel is rotated by a set angle. When the safety belt passes through the second friction test buckle for testing, the safety belt also passes under the spatial angle guide wheel, so that the section of the installation belt located between the spatial angle guide wheel and the second friction test buckle has a set spatial angle.

4. The automotive seat belt abrasion resistance and durability testing device according to claim 1, characterized in that: The test platform has a central through hole for the safety belt to pass through, and the vertical reciprocating motion mechanism is located below the central through hole.

5. The automotive seat belt abrasion resistance and durability testing device according to claim 1, characterized in that: The first test station is provided with a first backing mounting bracket, which is fixedly installed on the test table, and the first friction test backing is rotatably connected to the first backing mounting bracket.

6. The automotive seat belt abrasion resistance and durability testing device according to claim 1, characterized in that: The second test station is provided with a second rebate mounting bracket and a fixing frame. The second rebate mounting bracket and the fixing frame are both fixedly installed on the test table. The second rebate mounting bracket is provided with a mounting plate corresponding to the second friction test rebate. The second friction test rebate is rotatably connected to the mounting plate. The hexagonal friction rod and friction roller are fixedly installed on the fixing frame.

7. The automotive seat belt abrasion resistance and durability testing device according to claim 1, characterized in that: The testing device also includes an electrical control box, which is electrically connected to the vertical reciprocating motion mechanism.

8. The automotive seat belt abrasion resistance and durability testing device according to claim 1, characterized in that: The testing device is used in conjunction with an environmental control test chamber that can change the internal temperature and humidity. The entire frame is placed inside the environmental control test chamber, but the electrical control part of the testing device is located outside the environmental control test chamber.

9. The automotive seat belt abrasion resistance and durability testing device according to claim 1, characterized in that: The testing device is used in conjunction with an aging test chamber containing metal halide lamps. The entire frame is placed inside the aging test chamber, but the electrical control components of the testing device are located outside the aging test chamber.

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