Equipment and methods for testing the durability of traction belts

Abstract

This invention belongs to the field of automotive safety testing technology and discloses a strap durability testing device and method. The strap durability testing device includes an anchoring device, a first pulling member, and a second pulling member. The anchoring device is used to fix the hook end of the strap. The ends of the strap located on both sides of the length adjuster are a free end and a binding end, respectively. The first pulling member is fixedly connected to the free end of the strap. Along the length direction of the strap, the first pulling member can drive the free end of the strap away from the anchoring device, so that the strap slides relative to the length adjuster. The second pulling member is fixedly connected to the binding end of the strap. Along the length direction of the strap, the second pulling member can drive the binding end of the strap away from the anchoring device, so that the strap slides relative to the length adjuster. This strap durability testing device has a simple structure, is easy to operate, and can improve the accuracy and reliability of the test.

Description

Technical Field

[0001] This invention relates to the field of automotive safety testing technology, and in particular to a strap durability testing device and testing method. Background Technology

[0002] Child safety seats are the core device for ensuring children's safety while traveling in vehicles, and their safety performance requires rigorous regulatory certification. In recent years, with the continuous improvement of people's safety awareness, new regulations have placed higher demands on the durability of the top strap and strap adjuster of child safety seats. As key components connecting the seat body and the vehicle anchor points, wear, loosening, or malfunction of the top strap and strap adjuster during long-term use can directly lead to higher safety risks. Therefore, regulations require child safety seats to undergo durability testing of the top strap before leaving the factory to ensure reliable performance throughout their lifespan.

[0003] Currently, there is a lack of unified standards for durability testing of child safety seat top straps and strap adjusters, with most companies using manual methods. For example, the top strap is manually pulled to simulate real-world usage scenarios, the number of pulls is recorded using a counter, and the frequency and speed of pulling are adjusted according to test requirements. However, this manual testing method requires significant manpower and resources, and it is difficult to control the pulling force and speed, thus compromising the accuracy of the test.

[0004] Therefore, there is an urgent need to design a tether durability testing device to solve the above-mentioned problems in the existing technology. Summary of the Invention

[0005] The purpose of this invention is to provide a device and method for testing the durability of a taper, which is simple in structure, easy to operate, and can improve the accuracy and reliability of the test.

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

[0007] A pull belt durability testing device, used to test the durability of pull belts, includes:

[0008] An anchoring device for securing the hook end of the pull strap;

[0009] The first pulling member has a free end and a binding end at the ends of the pull strap located on both sides of the length adjuster, respectively. The first pulling member is used to fix the free end of the pull strap. Along the length direction of the pull strap, the first pulling member can drive the free end of the pull strap away from the anchoring device so that the pull strap slides relative to the length adjuster.

[0010] A second pulling member is used to be fixedly connected to the binding end of the pull strap. Along the length direction of the pull strap, the second pulling member can drive the binding end of the pull strap away from the anchoring device so that the pull strap slides relative to the length adjuster.

[0011] Preferably, the traction durability testing equipment further includes an adjustment mechanism configured to press the release button of the length adjuster when the second pulling member drives the binding end away from the anchoring device.

[0012] Preferably, the adjustment mechanism includes an adjustment cylinder and a pusher plate, the pusher plate being connected to the output end of the adjustment cylinder, and the end of the pusher plate being positioned opposite the release button of the length adjuster.

[0013] Preferably, the anchoring device includes a mounting frame, an anchor rod, a platform, and a pressing member, wherein the anchor rod is disposed on the mounting frame, and the anchor hook at the hooking end is hooked onto the anchor rod;

[0014] The platform is used to support the length adjuster, the pressing member is disposed on the mounting frame, and the pressing member presses the length adjuster against the platform.

[0015] Preferably, the anchor bolt is positioned adjustablely on the mounting frame along the length of the pull strap.

[0016] Preferably, the mounting frame has a mounting groove that extends along the length of the pull strap, and the anchor rod passes through the mounting groove;

[0017] The anchoring device further includes a push rod and a locking nut. The push rod is movably disposed on the mounting frame parallel to the length direction of the traction band. The end of the push rod is fixedly connected to the anchor rod. The locking nut is screwed onto the push rod and abuts against the mounting frame.

[0018] Preferably, the anchoring device further includes a positioning element, which is threadedly connected to the mounting bracket, and the end of the positioning element abuts against the side of the length adjuster.

[0019] Preferably, the strap durability testing equipment further includes a stand, on which both the first pulling member and the second pulling member are height-adjustable.

[0020] The method for testing the durability of a traction cable, using the aforementioned traction cable durability testing equipment, includes the following steps:

[0021] S1. Fix the hook end of the pull strap to the anchoring device, and fix the free end and the binding end to the first pull member and the second pull member respectively;

[0022] S2. Activate the first pulling member and pull the free end along the length direction of the pull belt, so that the pull belt slides a first specified length A relative to the length adjuster;

[0023] S3. The first pulling member drives the free end to move back to the initial position along the length direction of the pulling strip;

[0024] S4. Activate the second pulling member, press the release button of the length adjuster, and pull the binding end along the length direction of the pull strap to make the pull strap slide a second specified length B relative to the length adjuster;

[0025] S5. The second pulling member drives the binding end to move back to the initial position along the length direction of the pull strap;

[0026] S6. Repeat steps S2 to S5.

[0027] Preferably, the specified length A and the specified length B are equal.

[0028] The beneficial effects of this invention are as follows:

[0029] The durability testing device for a pull strap provided by this invention includes an anchoring device, a first pulling member, and a second pulling member. The hook end of the pull strap is fixed to the anchoring device to achieve the fixation of the pull strap. The first pulling member is fixedly connected to the free end of the pull strap, and the second pulling member is fixedly connected to the binding end of the pull strap. Since the first pulling member can drive the free end of the pull strap away from the anchoring device along the length direction of the pull strap, so that the pull strap slides relative to the length adjuster, it can simulate the situation when the pull strap shortens and passes through the length adjuster in actual use. Since the second pulling member can drive the binding end of the pull strap away from the anchoring device along the length direction of the pull strap, so that the pull strap slides relative to the length adjuster, it can simulate the situation when the pull strap stretches and passes through the length adjuster in actual use. This strap durability testing equipment simulates the actual connection between the strap and the back of a car seat by hooking the strap onto an anchoring device. It also simulates the scenario of manually adjusting the strap length in real-world conditions by using a first and second pulling component to move the strap relative to a length adjuster. The equipment uses the first and second pulling components in conjunction to repeatedly pull the strap, replacing manual pulling and significantly reducing labor costs. Furthermore, it allows for precise control of the movement distance and speed each time, thereby improving the accuracy and reliability of the test.

[0030] Using this pull strap durability test method, the two ends of the pull strap are pulled by the first and second pull components respectively to simulate the scenario of manually adjusting the length of the pull strap through the length adjuster in real-world conditions. The structure is simple and easy to operate, replacing manual testing, thereby reducing labor costs and improving test accuracy and reliability. Attached Figure Description

[0031] Figure 1 This is a side view of the tether durability testing device provided in a specific embodiment of the present invention;

[0032] Figure 2 This is a schematic diagram of the anchoring device provided in a specific embodiment of the present invention;

[0033] Figure 3 This is an exploded view of the anchoring device provided in a specific embodiment of the present invention.

[0034] In the picture:

[0035] 100 - Strap; 110 - Anchor hook;

[0036] 200-Length adjuster;

[0037] 1-Anchoring device; 11-Mounting bracket; 111-Mounting groove; 12-Anchor bolt; 13-Platform; 14-Pressure piece; 15-Push rod; 16-Locking nut; 17-Positioning piece;

[0038] 2-First pulling component;

[0039] 3-Second pulling component;

[0040] 4-Adjusting mechanism; 41-Adjusting cylinder; 42-Push plate;

[0041] 5-Erect frame;

[0042] 6-Base. Detailed Implementation

[0043] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0044] 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, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0045] In this invention, unless otherwise explicitly 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 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 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.

[0046] In the description of this embodiment, the terms "upper," "lower," "right," and "left," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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 limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0047] like Figure 1 and Figure 2 As shown, the present invention provides a pull strap durability testing device for testing the durability of a pull strap 100. The device includes an anchoring device 1, a first pulling member 2, and a second pulling member 3. The anchoring device 1 is used to fix the hook end of the pull strap 100. The ends of the pull strap 100 located on both sides of the length adjuster 200 are a free end and a binding end, respectively. The first pulling member 2 is fixedly connected to the free end of the pull strap 100. Along the length direction of the pull strap 100, the first pulling member 2 can drive the free end of the pull strap 100 away from the anchoring device 1, so that the pull strap 100 slides relative to the length adjuster 200. The second pulling member 3 is fixedly connected to the binding end of the pull strap 100. Along the length direction of the pull strap 100, the second pulling member 3 can drive the binding end of the pull strap 100 away from the anchoring device 1, so that the pull strap 100 slides relative to the length adjuster 200.

[0048] Since the first pulling member 2 can drive the free end of the pull strap 100 away from the anchoring device along the length direction of the pull strap 100 so that the pull strap 100 slides relative to the length adjuster 200, it is possible to simulate the situation where the pull strap 100 shortens and passes through the length adjuster 200 in actual use; since the second pulling member 3 can drive the binding end of the pull strap 100 away from the anchoring device along the length direction of the pull strap 100 so that the pull strap 100 slides relative to the length adjuster 200, it is possible to simulate the situation where the pull strap 100 extends and passes through the length adjuster 200 in actual use. This strap durability testing equipment simulates the actual connection between the strap 100 and the back of a car seat by hooking the strap 100 to the anchoring device via the anchor hook 110. It also simulates the scenario of manually adjusting the length of the strap 100 in real-world conditions by driving the strap 100 relative to the length adjuster 200 through the first pulling member 2 and the second pulling member 3. The equipment uses the first pulling member 2 and the second pulling member 3 in cooperation to repeatedly pull the strap 100, replacing manual pulling, which greatly reduces labor costs and can precisely control the movement distance and speed each time, thereby improving the accuracy and reliability of the test.

[0049] In this embodiment, the pull strap 100 is a common connection structure used in child safety seats. The pull strap 100 passes through the length adjuster 200 to form a free section and a binding section on both sides of the length adjuster 200. The end of the binding section is the binding end, which is fixed to the safety seat. The end of the free section is the free end. The length adjuster 200 and the anchor hook 110 provided at the end of the length adjuster 200 form a hook end. When the free end is pulled, the binding section of the pull strap 100 becomes a free section through the length adjuster 200. At this time, the length of the binding section becomes shorter, thereby shortening the effective fixing length of the pull strap 100. Conversely, pulling the binding end makes the effective fixing length of the pull strap 100 longer. Therefore, users can adjust the fixed length of the pull strap 100 by pulling the two sections located on both sides of the length adjuster 200. The length adjuster 200 is a commonly used one-way locking mechanism in the field, capable of locking the pull strap 100 passing through it in one direction. Its specific structure and principle will not be elaborated here. When the user pulls the free end, the pull strap 100 can pass freely through the length adjuster 200. However, when the user pulls the binding end or any position on the binding section, the pull strap 100 is locked by the length adjuster 200 and cannot move. Only by pressing the release button on the length adjuster 200 can the pull strap 100 be moved through the length adjuster 200. The pull strap durability testing equipment tests the pull strap 100 and the length adjuster 200. After the test, staff can determine whether the product meets the standards by observing the degree of wear inside the pull strap 100 and the length adjuster 200.

[0050] To further improve the automation level of this tack strip durability testing equipment, such as Figure 2 and Figure 3 As shown, the strap durability testing equipment also includes an adjustment mechanism 4. The adjustment mechanism 4 is configured to press the release button of the length adjuster 200 when the second pulling member 3 drives the binding end away from the anchoring device 1. In this embodiment, during testing, the first pulling member 2 and the second pulling member 3 alternately pull the strap 100. When the first pulling member 2 pulls the strap 100, the strap 100 is pulled and slides relative to the length adjuster 200. When the second pulling member 3 pulls the strap 100, the adjustment mechanism 4 simultaneously presses the release button of the length adjuster 200 to ensure that the strap 100 slides smoothly relative to the length adjuster 200 under the pull of the second pulling member 3. By setting the adjustment mechanism 4, during testing, there is no need for staff to manually press the release button of the length adjuster 200 with the assistance of the second pulling member 3, thereby improving the automation level of the strap durability testing equipment and reducing labor costs.

[0051] The specific structure of the adjustment mechanism 4 can be configured according to actual conditions. For example, such as... Figure 2 and Figure 3 As shown, the adjustment mechanism 4 includes an adjustment cylinder 41 and a pusher plate 42. The pusher plate 42 is connected to the output end of the adjustment cylinder 41, and its end is positioned directly opposite the release button of the length adjuster 200. In this embodiment, the pusher plate 42 is fixedly connected to the output end of the adjustment cylinder 41. Therefore, when the output end of the adjustment cylinder 41 is activated, the pusher plate 42 can move along with the output end to press or release the release button. The specific structure and shape of the pusher plate 42 are not limited here, as long as its end can press the release button under the drive of the output end of the adjustment cylinder 41.

[0052] Furthermore, such as Figure 2 and Figure 3As shown, the anchoring device 1 includes a mounting frame 11, an anchor rod 12, a platform 13, and a pressing member 14. The anchor rod 12 is mounted on the mounting frame 11, and the anchor hook 110 at the hook end is hooked on the anchor rod 12. The platform 13 is used to support the length adjuster 200. The pressing member 14 is mounted on the mounting frame 11, and the pressing member 14 presses the length adjuster 200 against the platform 13. In this embodiment, the length adjuster 200 and the anchor hook 110 disposed at the end of the length adjuster 200 form the hook end of the pull strap 100. The anchor hook 110 is a hook-shaped structure, and the anchor rod 12 is a rod-shaped structure. The anchor hook 110 can hook onto the anchor rod 12. At the same time, the length adjuster 200 is fixed by the lower platform 13 and the upper pressing member 14. Therefore, the anchoring device 1 can fix the hook end of the pull strap 100 to prevent the test results from being affected by the loosening of the length adjuster 200 during the test. The pressing member 14 is a screw. The mounting frame 11 also includes a top plate located above the platform 13. The length adjuster 200 is placed in the space between the top plate and the platform 13. The top plate has a threaded hole. The pressing member 14 is screwed into the threaded hole, and the end of the pressing member 14 extending out of the threaded hole abuts against the lower length adjuster 200.

[0053] To achieve durability testing of different specifications of 100 pull belts, such as Figure 2 and Figure 3 As shown, the anchor rod 12 is adjustablely positioned on the mounting frame 11 along the length of the pull strap 100. It can be understood that the length adjuster 200 and the anchor hook 110 are spaced apart along the length of the pull strap 100. For different pull straps 100, the distance between the length adjuster 200 and the anchor hook 110 is different. In order to ensure that the anchoring device 1 can hook the anchor hook 110 and the anchor rod 12 while fixing the length adjuster 200, the anchor rod 12 is designed to be adjustablely positioned on the mounting frame 11 along the length of the pull strap 100.

[0054] The engagement method between the anchor bolt 12 and the mounting bracket 11 can be set according to the actual situation, as long as it ensures that the anchor bolt 12 can move closer to or further away from the platform 13 along the length of the tension strap 100 on the mounting bracket 11. In this embodiment, as shown... Figure 2 and Figure 3 As shown, the mounting frame 11 has a mounting groove 111 extending along the length of the pull strap 100, and the anchor rod 12 passes through the mounting groove 111. The anchoring device 1 also includes a push rod 15 and a locking nut 16. The push rod 15 is movably disposed on the mounting frame 11 parallel to the length of the pull strap 100. The end of the push rod 15 is fixedly connected to the anchor rod 12. The locking nut 16 is screwed onto the push rod 15 and abuts against the mounting frame 11.

[0055] Specifically, the mounting frame 11 includes side plates on both sides of the anchor hook 110, with mounting grooves 111 formed on the side plates. Anchor rods 12 pass through the mounting grooves 111 of the two side plates, and the two ends of the anchor rods 12 extending out of the side plates are fixedly connected to the push rods 15. Therefore, the movement of the push rods 15 along the length of the pull strap 100 can drive the anchor rods 12 to move along the mounting grooves 111. Ear plates are provided on the side plates, with ear holes formed on the ear plates. The push rods 15 pass through the ear holes and have external threads. Locking nuts 16 are screwed onto both sides of the push rods 15 located on the ear plates, and the two locking nuts 16 abut against the sides of the ear plates, thereby fixing the push rods 15 to the mounting frame 11 to ensure the stability of the anchor rods 12.

[0056] When the position of the anchor rod 12 needs to be adjusted, the worker first loosens the locking nut 16 on one side of the movement direction to disengage it from the ear plate. After the push rods 15 on both side plates are disengaged from the locking nuts 16, the worker moves the two push rods 15 on both sides synchronously along the length of the pull belt 100 to drive the anchor rod 12 to move along the mounting groove 111. When the anchor rod 12 moves to the designated position, the worker tightens the locking nuts 16 to ensure that each locking nut 16 is in contact with the ear plate.

[0057] To further improve the stability of the length adjuster 200 during testing, such as Figure 2 and Figure 3 As shown, the anchoring device 1 also includes a positioning member 17, which is threadedly connected to the mounting bracket 11, and the end of the positioning member 17 abuts against the side of the length adjuster 200. In this embodiment, the positioning member 17 is a screw, and a threaded hole matching the screw is provided on the side plate of the mounting bracket 11. The positioning member 17 is screwed into the threaded hole, and the end of the positioning member 17 extends out of the side plate and abuts against the length adjuster 200 on the platform 13. It can be understood that positioning members 17 are provided on both sides of the mounting bracket 11, so the positioning members 17 on the two side plates clamp the length adjuster 200 in the middle from both sides. The positioning members 17 on the side cooperate with the pressing member 14 above to ensure the stability of the length adjuster 200 during the test.

[0058] In this embodiment, the platform 13 extends along the length of the pull strap 100 to form a side plate of the mounting bracket 11, and the adjusting cylinder 41 is fixedly installed at the part of the platform 13 that extends out of the side plate; the pull strap durability testing device also includes a base 6, and the mounting bracket 11 is installed on the base 6, thereby integrating the anchoring device 1 and the adjusting mechanism 4 onto the base 6, and the base 6 is provided with a handle, so as to facilitate the workers to move the anchoring device 1 and the adjusting mechanism 4.

[0059] Furthermore, such as Figure 1As shown, the zipper durability testing equipment also includes a stand 5. The first pulling member 2 and the second pulling member 3 are both height-adjustable on the stand 5. Therefore, the height of the first pulling member 2 and the second pulling member 3 relative to the anchoring device 1 can be adjusted to simulate the use scenario of the zipper 100 under different pulling angles, thereby expanding the testing scenario of the zipper durability testing equipment. In this embodiment, the first pulling member 2 and the second pulling member 3 are both cylinders commonly used in the art. The cylinder bodies of the first pulling member 2 and the second pulling member 3 are mounted on the upright frame 5. The free end of the pulling strap 100 is fixed to the output end of the first pulling member 2, and the binding end of the pulling strap 100 is fixed to the output end of the second pulling member 3. The upright frame 5 includes a frame body and a movable block mounted on the frame body. The movable block passes through the vertical guide rod of the frame body and can move along the guide rod. The movable block is fixed in position by means of fasteners or bolts. In another embodiment, the movable block passes through the guide rod and is driven by a screw guide rail device to move along the guide rod. The screw guide rail device is a commonly used driving device in the art, and its specific structure and working principle will not be described in detail here.

[0060] In this embodiment, the pull belt durability testing equipment also includes a control console, which is equipped with a PLC control unit. The PLC control unit is electrically connected to the first pulling member 2, the second pulling member 3, and the adjusting cylinder 41, and can receive signals from the three and control their actions. The control console is also equipped with an operation interface, through which the operator can adjust the test parameters (such as the pulling distance and pulling speed of the first pulling member 2 and the second pulling member 3) to meet different test requirements.

[0061] This embodiment also provides a method for testing the durability of a traction strip, which uses the aforementioned traction strip durability testing equipment and includes the following steps:

[0062] S1. Fix the hook end of the pull strap 100 to the anchoring device 1, and fix the free end and the binding end to the first pull member 2 and the second pull member 3 respectively;

[0063] S2. Activate the first pulling member 2 and pull the free end along the length direction of the pull belt 100 so that the pull belt 100 slides a first specified length A relative to the length adjuster 200.

[0064] S3. The first pulling element 2 drives the free end to move back to the initial position along the length direction of the pulling belt 100;

[0065] S4. Activate the second pull member 3, press the release button of the length adjuster 200, and pull the binding end along the length direction of the pull belt 100 so that the pull belt 100 slides a second specified length B relative to the length adjuster 200.

[0066] S5. The second pulling component 3 drives the binding end to move back to the initial position along the length direction of the pulling belt 100.

[0067] S6. Repeat steps S2 to S5.

[0068] In this embodiment, the two ends of the pull strap 100 are pulled by the first pull member 2 and the second pull member 3 respectively to simulate the scenario of manually adjusting the length of the pull strap 100 by the length adjuster 200 in real situation. The structure is simple and easy to operate, which replaces manual testing, thereby reducing labor costs and improving the accuracy and reliability of testing.

[0069] Specifically, the pull belt durability testing equipment also includes an adjusting cylinder 41. In step S4, before the second pulling member 3 pulls the binding end, the output end of the adjusting cylinder 41 extends under the control of the preset program of the PLC control unit and presses the release button. The action sequence of the first pulling member 2, the second pulling member 3, and the adjusting cylinder 41 in this pull belt durability testing method is as follows: The PLC control unit starts the first pulling member 2 and controls the first pulling member 2 to pull the free end of the pull belt 100 until the output end of the first pulling member 2 moves a first specified length A. During this process, the length adjuster 200 allows the pull belt 100 to be located in the binding section. Partially, the free section is formed; then the PLC control unit controls the output end of the first pulling member 2 to move back to the initial position, at which point the free section will bend and accumulate; then the PLC control unit starts the second pulling member 3 and controls the output end of the adjusting cylinder 41 to extend and press the release button of the length adjuster 200. At this time, the length adjuster 200 releases the one-way locking of the pull belt 100, and then the second pulling member 3 pulls the binding end of the pull belt 100 until the output end of the second pulling member 3 moves the second specified length B. During this process, the part of the pull belt 100 located in the free section forms a binding section through the length adjuster 200.

[0070] Furthermore, if the specified length A and the specified length B are equal, that is, the distance that the first pulling member 2 and the second pulling member 3 move by pulling the end of the pull belt 100 each time are the same, then the first pulling member 2 and the second pulling member 3 can repeatedly pull the pull belt 100 without interruption of the test due to the limited stroke of the pull belt 100.

[0071] After the test is completed, the staff will remove the pull strap 100 and check its wear. The inspection will include the wear of the pull strap 100 itself and the length adjuster 200. If the pull strap 100 is damaged or malfunctions, or if the length adjuster 200 is severely damaged and cannot perform the normal one-way locking and releasing functions, the product will be deemed unqualified.

[0072] 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 will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. 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 pull strap durability testing apparatus for testing the durability of a pull strap (100), characterized by, The utility model relates to a kind of anchor device and the length adjustment device of durable test equipment of pull belt, including: Anchor device (1), the anchor device (1) is used to fix the hooking end of the pull belt (100); First puller (2), the pull belt (100) is located the end of length adjuster (200) two side parts respectively as free end and binding end, the first puller (2) is used to be fixedly connected with the free end of the pull belt (100), along the length direction of the pull belt (100), the first puller (2) can drive the free end of the pull belt (100) away from the anchor device (1), to make the pull belt (100) relative to length adjuster (200) sliding; Second puller (3), the second puller (3) is used to be fixedly connected with the binding end of the pull belt (100), along the length direction of the pull belt (100), the second puller (3) can drive the binding end of the pull belt (100) away from the anchor device (1), to make the pull belt (100) relative to the length adjuster (200) sliding; The pull belt durability test equipment further includes adjusting mechanism (4), the adjusting mechanism (4) is configured to press the release button of the length adjuster (200) when the second puller (3) drives the binding end away from the anchor device (1).

2. The pull strip durability testing apparatus of claim 1, wherein, The adjusting mechanism (4) includes adjusting cylinder (41) and push piece (42), the push piece (42) is connected to the output end of the adjusting cylinder (41), and the end of the push piece (42) is arranged opposite to the release button of the length adjuster (200).

3. The pull strip durability testing apparatus of claim 1, wherein, The anchor device (1) includes a mounting frame (11), an anchor rod (12), a platform (13), and a pressing member (14). The anchor rod (12) is arranged on the mounting frame (11), and the hooking end of the anchor hook (110) is hooked on the anchor rod (12). The platform (13) is used to support the length adjuster (200), and the pressing member (14) is arranged on the mounting frame (11) and presses the length adjuster (200) against the platform (13).

4. The pull strip durability testing apparatus of claim 3, wherein, The anchor rod (12) is adjustably arranged on the mounting frame (11) along the length direction of the pull belt (100).

5. The pull strip durability testing apparatus of claim 4, wherein, The mounting frame (11) is provided with a mounting groove (111) extending along the length direction of the pull belt (100), and the anchor rod (12) is arranged in the mounting groove (111). The anchor device (1) further includes a push rod (15) and a locking nut (16). The push rod (15) is movably arranged on the mounting frame (11) parallel to the length direction of the pull belt (100), the end of the push rod (15) is fixedly connected with the anchor rod (12), and the locking nut (16) is screwed on the push rod (15) and abuts against the mounting frame (11).

6. The pull strip durability testing apparatus of claim 3, wherein, The anchor device (1) further includes a positioning member (17) which is threadedly connected to the mounting frame (11) and has an end abutting against the side surface of the length adjuster (200).

7. The pull strip durability testing apparatus of claim 1, wherein, The pull strap durability test device further comprises a stand (5), and the first puller (2) and the second puller (3) are both height-adjustably arranged on the stand (5).

8. A method of pull strip durability testing characterised by, The use of the pull strap durability test device according to any one of claims 1-7 comprises the following steps: S1, fixing the hooking end of the pull strap (100) on the anchoring device (1), and fixing the free end and the binding end on the first puller (2) and the second puller (3) respectively; S2, starting the first puller (2) to pull the free end along the length direction of the pull strap (100), so that the pull strap (100) slides relative to the length adjuster (200) by a first specified length A; S3, the first puller (2) drives the free end to move back to the initial position along the length direction of the pull strap (100); S4, starting the second puller (3) to press the release button of the length adjuster (200), and pulling the binding end along the length direction of the pull strap (100), so that the pull strap (100) slides relative to the length adjuster (200) by a second specified length B; S5, the second puller (3) drives the binding end to move back to the initial position along the length direction of the pull strap (100); S6, repeating steps S2 to S5.

9. The method of pull strip durability testing of claim 8, wherein, The specified length A and the specified length B are equal.

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