Zipper torsion moment test fixture
By designing a zipper torsional torque test fixture and using the transmission arm of the universal tensile testing machine to drive the connecting chain, the slider clamping assembly and the pull tab clamping assembly can be rotated synchronously, solving the problem that the universal tensile testing machine cannot twist the slider, achieving accurate testing of the zipper torsional torque, and reducing testing costs.
Patent Information
- Application Number
- CN202422105439.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-29
- Publication Date
- 2025-10-21
- Estimated Expiration
- 2034-08-29
AI Technical Summary
Most of the testing instruments used in existing laboratories to provide controllable force values are universal tensile testing machines, which cannot twist the slider, resulting in an inability to meet the zipper torsional torque testing requirements. The additional configuration of torque testing instruments will increase testing costs.
A zipper torsional torque test fixture is designed, which includes a slider clamping assembly, a tab clamping assembly, a bearing support, a torque shaft, a torque wheel and a connecting chain. The connecting chain is driven by the transmission arm of a universal tensile testing machine, so that the torque wheel, the torque shaft and the tab clamping assembly rotate synchronously at a constant angular velocity to achieve torsion testing of the zipper tab.
The need for zipper torsional torque testing can be met without the need for additional torque testing equipment, reducing testing costs. It can also be used in conjunction with a universal tensile testing machine to accurately record torsional torque.
Smart Images
Figure CN223461357U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application belongs to the technical field of zipper testing, and more particularly to a zipper torsional resistance torque testing fixture. BACKGROUND
[0002] According to relevant standards, when testing the torsional resistance torque of a zipper, a fixed clamp is used to clamp the puller and the pull ring of the zipper respectively, and then a testing instrument is used to twist the puller at a specific twisting speed until the puller or the pull piece is twisted or broken, and the corresponding torque value of the testing instrument is recorded.
[0003] However, most of the testing instruments used in laboratories to provide controllable force values are universal tensile testing machines, which can only apply force in a linear direction and thus cannot twist the puller, which does not meet the testing requirements. If a torque testing instrument is additionally configured, the testing cost will increase accordingly. CONTENT OF THE UTILITY MODEL
[0004] The application aims to provide a zipper torsional resistance torque testing fixture, which aims to solve the problem that most of the testing instruments used in laboratories to provide controllable force values are universal tensile testing machines, which can only apply force in a linear direction and thus cannot twist the puller, which does not meet the testing requirements. If a torque testing instrument is additionally configured, the testing cost will increase accordingly.
[0005] To achieve the above-mentioned purpose, the technical solution adopted by the application is to provide a zipper torsional resistance torque testing fixture, characterized in that it comprises a puller clamping assembly, a pull piece clamping assembly, a bearing support, a torsional resistance torque testing fixture, a torsional resistance torque testing fixture, a connecting chain, and a supporting base. The puller clamping assembly and the bearing support are both arranged on the supporting base, and the puller clamping assembly and the pull piece clamping assembly are arranged in opposite intervals. The torsional resistance torque testing fixture is connected to the bearing support and is synchronously connected to the pull piece clamping assembly and the torsional resistance torque testing fixture, respectively. The connecting chain is wound around the torsional resistance torque testing fixture.
[0006] In one embodiment, the puller clamping assembly comprises a first clamping plate and a second clamping plate arranged adjacent to each other, both of which are arranged on the supporting base. The first clamping plate has a first inclined edge adjacent to the second clamping plate, and the second clamping plate has a second inclined edge adjacent to the first clamping plate. The first inclined edge and the second inclined edge cooperate to form a V-shaped gap between the first clamping plate and the second clamping plate.
[0007] In one embodiment, the puller clamping assembly further comprises a connecting clamping plate arranged on the supporting base and fixedly connected to the first clamping plate and the second clamping plate, and the connecting clamping plate, the first clamping plate, and the second clamping plate are integrally formed.
[0008] In one of the embodiments, the puller clamping assembly further comprises a first movable support and a second movable support, the connecting clamping plate is fixedly arranged on the first movable support, the first movable support is movably arranged on the second movable support, and is used for synchronously adjusting the relative height of the first clamping plate and the second clamping plate in the vertical direction, and the second movable support is movably arranged on the support base, and is used for synchronously adjusting the relative distance between the first clamping plate and the second clamping plate and the puller clamping assembly in the horizontal direction.
[0009] In one of the embodiments, the puller clamping assembly further comprises a first locking screw, the second movable support has a guide column extending in the vertical direction, the first movable support is movably arranged on the guide column in the vertical direction, and the first locking screw is threadedly connected to the first movable support in the horizontal direction and penetrates the first movable support, so as to lock or unlock the first movable support and the second movable support in the vertical direction.
[0010] In one of the embodiments, the puller clamping assembly further comprises a second locking screw, a limiting column and a limiting pressing plate, the second movable support has a guide groove in the horizontal direction, the guide groove penetrates the opposite two surfaces of the second movable support in the vertical direction, the limiting column is fixedly arranged on the support base and penetrates the guide groove, the second locking screw penetrates the limiting pressing plate in the vertical direction and is threadedly connected to the end of the limiting column away from the support base, and the limiting pressing plate is located between the surface of the second movable support away from the support base and the head of the second locking screw, so as to lock or unlock the second movable support and the support base in the horizontal direction.
[0011] In one of the embodiments, the puller clamping assembly comprises a first clamping block, a second clamping block, a fixed support block and a connecting screw rod, one end of the torsion shaft has a movable groove extending in the radial direction of the torsion shaft and penetrating the opposite two sides of the torsion shaft, the first clamping block and the second clamping block are movably connected to the movable groove in the radial direction of the torsion shaft, the fixed support block is fixedly arranged in the movable groove and located between the first clamping block and the second clamping block, and the connecting screw rod penetrates the first clamping block, the fixed support block and the second clamping block in sequence and oppositely threadedly connects the first clamping block and the second clamping block.
[0012] In one of the embodiments, the bearing support comprises a support body and a rotating bearing, the support body is fixedly arranged on the support base and fixedly connected to the outer ring of the rotating bearing, and the torsion shaft is fixedly connected to the inner ring of the rotating bearing.
[0013] In one of the embodiments, one end of the connecting chain is fixedly connected to the torsion rotating wheel, the other end is provided with a first universal tensile testing machine connecting part, and the bottom of the support base is provided with a second universal tensile testing machine connecting part.
[0014] The beneficial effect of the zipper torsional torque test fixture provided by the present application is that, compared with the prior art, the above-mentioned zipper torsional torque test fixture includes a slider clamping assembly, a pull tab clamping assembly, a bearing support, a torsion shaft, a torsion wheel, a connecting chain and a supporting base, wherein the slider clamping assembly and the bearing support are both arranged on the supporting base, the slider clamping assembly and the pull tab clamping assembly are arranged relatively spaced apart, the torsion shaft is connected to the bearing support by self-rotation, and synchronously drives the pull tab clamping assembly and the torsion wheel respectively, and the connecting chain is wound around and connected to the torsion wheel, so that the slider clamping assembly and the bearing support are fixedly arranged on the fixed base of the universal tensile testing machine, and connected by the connecting chain. The transmission arm of the universal tensile testing machine is fixedly connected to the transmission arm of the universal tensile testing machine, so that when the slider clamping assembly and the pull tab clamping assembly respectively clamp the slider and the pull tab of the test zipper, the transmission arm of the universal tensile testing machine is driven to pull the connecting chain at a constant linear speed, thereby making the torque wheel, the torque shaft and the pull tab clamping assembly rotate synchronously at a constant angular velocity to achieve the twisting of the pull tab of the test zipper, and record the corresponding force value of the universal tensile testing machine until the slider or the pull tab is twisted off or damaged, so that the torsional torque conversion can be performed. It can be seen that the above-mentioned zipper torsional torque test fixture can be combined with the universal tensile testing machine to meet the testing requirements, and there is no need to configure additional torque testing instruments to increase the testing cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.
[0016] Figure 1 A schematic structural diagram of a zipper torsional torque test fixture provided in one embodiment of the present application;
[0017] Figure 2 for Figure 1 Schematic diagram of the structure of the slider clamping assembly in the zipper torsional torque test fixture shown;
[0018] Figure 3 for Figure 2 The schematic diagram of the structure of the slider clamping assembly facing the pull tab clamping assembly;
[0019] Figure 4 for Figure 2 The schematic diagram of the structure of the slider clamping assembly is shown as a portion facing away from the support base;
[0020] Figure 5 for Figure 4 A schematic diagram of the connection structure between the guide groove and the limiting column in the slider clamping assembly shown;
[0021] Figure 6 for Figure 1 A perspective structural diagram of a pull tab clamping assembly in a zipper torsional moment test fixture is shown;
[0022] Figure 7 for Figure 1 A schematic structural diagram of one end of the torque shaft in the zipper torsional moment test fixture shown;
[0023] Figure 8 for Figure 1 The diagram shows the structure of the bearing support in the zipper torsional moment test fixture.
[0024] Figure: 10, zipper torsional torque test fixture; 100, slider clamping assembly; 110, first clamping plate; 112, first inclined edge; 120, second clamping plate; 122, second inclined edge; 130, connecting clamping plate; 132, connecting back plate; 140, first movable bracket; 150, second movable bracket; 152, guide column; 154, guide groove; 160, first locking bolt; 170, second locking bolt; 180, limit pressure piece; 19 0. Limit column; 200. Pull tab clamping assembly; 210. First clamping block; 220. Second clamping block; 230. Fixed support block; 240. Connecting screw; 300. Bearing support; 310. Support body; 320. Rotating bearing; 400. Torque shaft; 410. Movable groove; 500. Torque wheel; 600. Connecting chain; 610. First universal tensile testing machine connection; 700. Support base; 710. Second universal tensile testing machine connection. DETAILED DESCRIPTION
[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.
[0026] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.
[0027] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.
[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.
[0029] See also Figure 1 , the zipper torsional torque test fixture 10 provided in one embodiment of the present application is now described. The above-mentioned zipper torsional torque test fixture 10 includes a slider clamping assembly 100, a pull tab clamping assembly 200, a bearing support 300, a torque shaft 400, a torque wheel 500 and a connecting chain 600, wherein the slider clamping assembly 100 and the pull tab clamping assembly 200 are arranged relative to each other in the horizontal direction, so as to respectively clamp and fix the slider (not shown in the figure) and the pull tab (not shown in the figure) of the test zipper, the torque shaft 400 is rotatably connected to the bearing support 300, and synchronously transmits and connects the pull tab clamping assembly 200 and the torque wheel 500 respectively, and the connecting chain 600 is wound around the torque wheel 500 and is used to be fixedly connected to the transmission arm of the universal tensile testing machine (not shown in the figure).
[0030] The zipper torsional resistance torque test fixture 10 provided by the application has the beneficial effect that, compared with the prior art, the zipper torsional resistance torque test fixture 10 is fixedly arranged on the fixed base of the universal tensile testing machine through the puller clamping assembly 100 and the bearing support 300, and is fixedly connected to the transmission arm of the universal tensile testing machine through the connecting chain 600, so that when the puller clamping assembly 100 and the pull tab clamping assembly 200 respectively clamp and fix the puller of the test zipper and the pull tab of the test zipper, the transmission arm of the universal tensile testing machine can be driven to pull the connecting chain 600 at a constant linear speed, the torsion wheel 500 rotates immediately during the movement of the connecting chain 600, and the torsion wheel 500, the torsion shaft 400 and the pull tab clamping assembly 200 rotate synchronously at a constant angular speed, the pull tab of the test zipper is twisted, and the corresponding force value of the universal tensile testing machine is recorded when the puller or the pull tab is twisted and broken or damaged, so that the torsional torque conversion can be carried out. It can be seen that the zipper torsional resistance torque test fixture 10 cooperates with the universal tensile testing machine to meet the test requirements, and there is no need to additionally configure a torque testing instrument to increase the test cost.
[0031] Further, in the embodiment, the zipper torsional resistance torque test fixture 10 further comprises a support base 700, the puller clamping assembly 100 and the bearing support 300 are arranged on the support base 700 and are relatively spaced apart in the horizontal direction, the opposite ends of the torsion shaft 400 extend out of the bearing support 300 and are synchronously connected to the pull tab clamping assembly 200 and the torsion wheel 500 respectively, and the pull tab clamping assembly 200 and the puller clamping assembly 100 are arranged in a spaced apart manner in the horizontal direction.
[0032] Please refer to Figure 3 In the embodiment, the puller clamping assembly 100 comprises a first clamping plate 110 and a second clamping plate 120, wherein the first clamping plate 110 and the second clamping plate 120 are indirectly arranged on the support base 700, the first clamping plate 110 and the second clamping plate 120 are mirror-symmetric, the first clamping plate 110 has a first inclined edge 112 adjacent to one side of the second clamping plate 120, the second clamping plate 120 has a second inclined edge 122 adjacent to one side of the first clamping plate 110, and the first inclined edge 112 and the second inclined edge 122 cooperate to form a V-shaped gap between the first clamping plate 110 and the second clamping plate 120, thereby being suitable for clamping and fixing pullers of different sizes.
[0033] Further, in the embodiment, the puller clamping assembly 100 further comprises a connecting clamping plate 130 and a connecting back plate 132, the connecting clamping plate 130 is indirectly arranged on the support base 700 and is fixedly connected with the first clamping plate 110 and the second clamping plate 120 respectively, and the connecting clamping plate 130, the first clamping plate 110 and the second clamping plate 120 are integrally formed, the connecting back plate 132 is indirectly arranged on the support base 700 and is arranged at the side of the first clamping plate 110 and the second clamping plate 120 away from the pull tab clamping assembly 200, thereby being suitable for assisting in supporting pullers with different sizes.
[0034] Please refer to Figure 1 and Figure 2 In the embodiment, the puller clamping assembly 100 further comprises a first movable support 140 and a second movable support 150, wherein the first clamping plate 110, the second clamping plate 120, the connecting clamping plate 130 and the connecting back plate 132 are fixedly arranged on the first movable support 140, the first movable support 140 is movably arranged on the second movable support 150, for synchronously adjusting the relative height of the first clamping plate 110, the second clamping plate 120, the connecting clamping plate 130 and the connecting back plate 132 in the vertical direction, and the second movable support 150 is movably arranged on the support base 700, for synchronously adjusting the relative distance between the first clamping plate 110, the second clamping plate 120, the connecting clamping plate 130, the connecting back plate 132 and the pull tab clamping assembly 200 in the horizontal direction, thereby enabling the puller clamping assembly 100 to adjust the relative position of the puller after clamping and fixing the puller with different sizes, and / or the pull tab clamping assembly 200 to adjust the relative position of the pull tab after clamping and fixing the pull tab with different sizes, so that the puller and the pull tab are relatively aligned in the vertical direction and relatively expanded in the horizontal direction, for facilitating the torsional resistance torque test.
[0035] Please refer to Figure 2 and Figure 3 In the embodiment, the puller clamping assembly 100 further comprises a first locking bolt 160, the second movable support 150 has a guide column 152 extending in the vertical direction, the first movable support 140 is movably arranged on the guide column 152 in the vertical direction, and the first locking bolt 160 is threadedly connected to the first movable support 140 in the horizontal direction and penetrates the first movable support 140, for locking or unlocking the first movable support 140 and the second movable support 150 in the vertical direction, specifically, by tightening the first locking bolt 160 in the horizontal direction, the first movable support 140 and the second movable support 150 can be locked in the vertical direction, and by loosening the first locking bolt 160 in the horizontal direction, the first movable support 140 and the second movable support 150 can be unlocked in the vertical direction.
[0036] Please refer to Figure 2 , Figure 4 andFigure 5 In the embodiment, the puller clamping assembly 100 further comprises a second locking bolt 170, a limiting pressing plate 180 and a limiting column 190. The second movable bracket 150 has a guide groove 154 extending in the horizontal direction, the guide groove 154 penetrates through the opposite two sides of the second movable bracket 150 in the vertical direction, the limiting column 190 is fixedly arranged on the support base 700 and penetrates through the guide groove 154 in the vertical direction, one end of the limiting column 190 away from the support base 700 is accommodated in the guide groove 154, and the corresponding opposite two sides of the limiting column 190 have guide side walls (not shown in the figure) parallel to the extension direction of the guide groove 154, so that the second movable bracket 150 can only reciprocate along the extension direction of the guide groove 154 in the horizontal direction. The second locking bolt 170 penetrates through the limiting pressing plate 180 in the vertical direction and is threadedly connected to one end of the limiting column 190 away from the support base 700, and the limiting pressing plate 180 is located between the side of the second movable bracket 150 away from the support base 700 and the head of the second locking bolt 170, so as to lock or unlock the second movable bracket 150 and the support base 700 in the horizontal direction. Specifically, by tightening the second locking bolt 170 in the vertical direction, the second movable bracket 150 and the support base 700 can be locked in the horizontal direction, and by loosening the second locking bolt 170 in the vertical direction, the second movable bracket 150 and the support base 700 can be unlocked in the horizontal direction.
[0037] Please refer to Figure 6 and Figure 7 In the embodiment, the puller clamping assembly 200 comprises a first clamping block 210, a second clamping block 220, a fixed supporting block 230 and a connecting screw 240. One end of the torsion shaft 400 away from the puller clamping assembly 100 has a movable groove 410 extending in the radial direction of the torsion shaft 400 and penetrating through the opposite two sides of the torsion shaft 400 (the center line of the movable groove 410 extending in the direction of its own extension direction is the radial direction of the torsion shaft 400). The first clamping block 210 and the second clamping block 220 are movably connected to the movable groove 410 in the radial direction of the torsion shaft 400. The fixed supporting block 230 is fixedly arranged in the central region of the movable groove 410 and located between the first clamping block 210 and the second clamping block 220. The connecting screw 240 penetrates through the first clamping block 210, the fixed supporting block 230 and the second clamping block 220 in sequence and oppositely threadedly connects the first clamping block 210 and the second clamping block 220. In this way, by rotating the connecting screw 240, the first clamping block 210 and the second clamping block 220 can move towards each other or move in the opposite direction, thereby clamping pullers of different sizes.
[0038] Please refer to Figure 8In the embodiment, the bearing support 300 includes a support body 310 and a rotating bearing 320, the support body 310 is fixedly arranged on the support base 700 and fixedly connected with the outer ring of the rotating bearing 320, and the torsion shaft 400 is fixedly connected with the inner ring of the rotating bearing 320. Specifically, in the embodiment, the support body 310 includes a support block (not shown in the figure) and a support cylinder (not shown in the figure), the support block is fixedly arranged on the support base 700 and fixedly connected with the outer wall of the support cylinder, the support cylinder is arranged horizontally, the rotating bearing 320 is coaxially arranged on the inner wall of the support cylinder, and the torsion shaft 400 is coaxially arranged on the inner ring of the rotating bearing 320.
[0039] Further, in the embodiment, one end of the connecting chain 600 is fixedly connected with the torsion wheel 500, the other end is provided with a first universal tensile testing machine connecting part 610 for fixedly connecting with the transmission arm of the universal tensile testing machine, the bottom of the support base 700 is provided with a second universal tensile testing machine connecting part 710 for fixedly connecting with the fixed base of the universal tensile testing machine, and when the transmission arm of the universal tensile testing machine pulls the connecting chain 600 along the vertical direction, the first universal tensile testing machine connecting part 610 is always arranged opposite to the second universal tensile testing machine connecting part 710 along the vertical direction, thereby keeping the overall structure of the zipper torsional resistance moment test fixture 10 stable.
[0040] Specifically, taking the standard QB / T2171-2014 requirement as an example, the pull tab needs to be twisted at a constant angular velocity of 1.5r / min, and the diameter of the torsion wheel 500 in the zipper torsional resistance moment test fixture 10 provided by the application is set to 44.50mm, and the transmission arm of the universal tensile testing machine pulls the connecting chain 600 at a constant linear velocity of 210mm / min, that is, the standard requirement can be met.
[0041] The above only describes the preferred embodiments of the application and is not intended to limit the application. Any modification, equivalent replacement and improvement made within the spirit and principle of the application shall be included in the protection scope of the application.
Claims
1. A zipper torsion resistance torque test fixture, characterized by, Including pull head clamping assembly, pull piece clamping assembly, bearing support, torsion shaft, torsion rotating wheel, connecting chain and support base, the pull head clamping assembly and the bearing support are arranged on the support base, and the pull head clamping assembly and the pull piece clamping assembly are arranged at intervals, the torsion shaft is connected on the bearing support, and the pull piece clamping assembly and the torsion rotating wheel are connected, the connecting chain is wound on the torsion rotating wheel.
2. The zipper torsional resistance moment test fixture of claim 1, wherein, The pull head clamping assembly includes adjacent first clamping plate and second clamping plate, the first clamping plate and the second clamping plate are arranged on the support base, the first clamping plate has a first inclined edge adjacent to one side of the second clamping plate, the second clamping plate has a second inclined edge adjacent to one side of the first clamping plate, and the first inclined edge and the second inclined edge cooperate to form a V-shaped gap between the first clamping plate and the second clamping plate.
3. The zipper torsional resistance moment test fixture of claim 2, wherein, The pull head clamping assembly further includes a connecting clamping plate, the connecting clamping plate is arranged on the support base and fixedly connected with the first clamping plate and the second clamping plate, and the connecting clamping plate, the first clamping plate and the second clamping plate are integrally formed.
4. The zipper torsional resistance moment test fixture of claim 3, wherein, The pull head clamping assembly further includes a first movable support and a second movable support, the connecting clamping plate is fixedly arranged on the first movable support, the first movable support is movably arranged on the second movable support, for synchronously adjusting the relative height of the first clamping plate and the second clamping plate in the vertical direction, and the second movable support is movably arranged on the support base, for synchronously adjusting the relative distance between the first clamping plate, the second clamping plate and the pull piece clamping assembly in the horizontal direction.
5. The zipper torsional resistance moment test fixture of claim 4, wherein, The pull head clamping assembly further includes a first locking bolt, the second movable support has a guide column extending in the vertical direction, the first movable support is movably arranged on the guide column in the vertical direction, and the first locking bolt is threadedly connected to the first movable support in the horizontal direction and penetrates the first movable support, for locking or unlocking the first movable support and the second movable support in the vertical direction.
6. The zipper torsional resistance moment test fixture of claim 4, wherein, The pull head clamping assembly further includes a second locking bolt, a limiting column and a limiting pressing piece, the second movable support has a guide groove in the horizontal direction, the guide groove penetrates the opposite two sides of the second movable support in the vertical direction, the limiting column is fixedly arranged on the support base and penetrates the guide groove, the second locking bolt penetrates the limiting pressing piece in the vertical direction and is threadedly connected to the end of the limiting column away from the support base, and the limiting pressing piece is located between the side of the second movable support away from the support base and the head of the second locking bolt, for locking or unlocking the second movable support and the support base in the horizontal direction.
7. The zipper torsional resistance moment test fixture of claim 1, wherein, The pull-tab clamping assembly comprises a first clamping block, a second clamping block, a fixed supporting block and a connecting screw rod, one end of the torsion shaft is provided with a movable groove which extends along the radial direction of the torsion shaft and penetrates through the opposite sides of the torsion shaft, the first clamping block and the second clamping block are movably connected to the movable groove along the radial direction of the torsion shaft respectively, the fixed supporting block is fixedly arranged in the movable groove and located between the first clamping block and the second clamping block, and the connecting screw rod is sequentially arranged through the first clamping block, the fixed supporting block and the second clamping block and oppositely and reversely connected with the first clamping block and the second clamping block.
8. The zipper torsional resistance moment test fixture of claim 1, wherein, The bearing support comprises a support body and a rotating bearing, the support body is fixedly arranged on the supporting base and fixedly connected with the outer ring of the rotating bearing, and the torsion shaft is fixedly connected with the inner ring of the rotating bearing.
9. The zipper torsional resistance moment test fixture of claim 1, wherein, One end of the connecting chain is fixedly connected with the torsion wheel, the other end is provided with a first universal tensile testing machine connecting part, and the bottom of the supporting base is provided with a second universal tensile testing machine connecting part.