A device for testing the tensile strength of a fitness resistance band.

Abstract

This application discloses a tensile performance testing device for a fitness resistance band, relating to the field of resistance band manufacturing technology. It includes a base and a tensioning assembly. A first sliding rail is mounted on the top outer end of the base, and the tensioning assembly is mounted on the top outer end of the first sliding rail. The device features a bonding wheel that is tightly fitted to the outer surface of the connecting frame. When the connecting frame slides within the base under tension, the bonding wheel rotates accordingly. The device can control a first electrically controlled lead screw to reciprocate the resistance band at a uniform speed, causing the connecting frame to slide at a uniform speed, and the bonding wheel to rotate at a uniform speed. A lap speed detector records the rotation data under these conditions. If the resistance band experiences elastic decay or localized damage after repeated stretching, it will generate non-uniform sliding resistance during the stretching process, resulting in uneven sliding speed of the connecting frame and fluctuations in the rotation of the bonding wheel. By monitoring the rotation uniformity using the lap speed detector, the device can accurately determine whether the resistance band has experienced tensile damage or abnormal elasticity.

Description

Technical Field

[0001] This application relates to the field of resistance band manufacturing technology, specifically a device for testing the tensile performance of a resistance band for fitness. Background Technology

[0002] Resistance bands, as a common type of fitness equipment, are widely used in strength training, rehabilitation exercises, and flexibility improvement due to their portability, versatility, and adjustable resistance. With the continuous increase in the number of fitness enthusiasts, the market demand for resistance bands is rising year by year, and the requirements for their product quality, especially their tensile performance, are becoming increasingly stringent. The tensile performance of resistance bands directly affects the training effect and safety of users. If the resistance band experiences elasticity decay, local damage, or breakage during use, it may lead to a decrease in training effect or even sports injuries. Therefore, accurate and comprehensive testing of the tensile performance of resistance bands is of great significance during the production process.

[0003] Currently, most common resistance band testing devices on the market use a uniaxial stretching method, which involves using a drive mechanism to stretch the resistance band at a uniform speed in one direction until it breaks or reaches a preset stretch length, thereby obtaining parameters such as its maximum tensile force or elongation at break. However, in actual use, the stress state of a resistance band is far more complex than simple uniaxial stretching. During training, users often perform dynamic and reciprocating stretching of the resistance band, including rapid explosive stretching and slow controlled force release. At the same time, the angle of force application and changes in wrist and elbow posture also affect the force distribution of the resistance band. Due to structural limitations, existing testing devices cannot simulate this complex dynamic loading process and human force application habits, resulting in deviations between the test results and actual performance, and making it impossible to fully assess the durability and reliability of the resistance band in real-world usage scenarios.

[0004] In addition, when performing repeated tensile tests on tension bands, existing equipment can usually only record changes in tensile force, making it difficult to effectively capture minor damage or uneven elasticity that occurs during fatigue. If the tension band is damaged or its elasticity is reduced in a localized area, it will generate non-uniform sliding resistance during the stretching process, causing fluctuations in the stretching speed. However, traditional equipment lacks corresponding monitoring methods and cannot accurately determine the location and extent of damage to the tension band, affecting the accuracy and comprehensiveness of the test.

[0005] In summary, how to provide a tensile performance testing device for tension bands that can simulate real-world usage scenarios, achieve multi-dimensional dynamic loading, and possess accurate damage identification capabilities has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0006] The purpose of this application is to provide a device for testing the tensile performance of a fitness resistance band, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this application provides the following technical solution: A device for testing the tensile performance of a fitness resistance band includes a base and a tensioning assembly. A first sliding rail is mounted on the top outer end of the base, and the tensioning assembly is mounted on the top outer end of the first sliding rail. The tensioning assembly includes a first sliding seat, a first lead screw connector mounted on the outer end of the first sliding seat, a rotating platform mounted on the top outer end of the first sliding seat, a first motor mounted on the outer end of the rotating platform, a meshing gear mounted on the output end of the first motor, a steering seat mounted inside the rotating platform, meshing teeth formed at the bottom of the steering seat, and a first electrically controlled push rod mounted inside the steering seat. An extension seat is installed at the output end of the base, a second motor is installed at the outer end of the extension seat, and a steering head is provided at the output end of the second motor. The end of the steering head away from the second motor is connected to a mounting base. A first fixing component is installed inside the mounting base, and a data acquisition component is installed at the outer end of the mounting base. A first electric control screw is installed at the top outer end of the base, and a second sliding rail is installed at the top outer end of the base. A support component is installed at the top outer end of the second sliding rail. A second electric control screw is installed at the top outer end of the base, and a second fixing component is installed at the top outer end of the base. A tension band is fixed between the first fixing component and the second fixing component.

[0008] Furthermore, the first fixing component includes a connecting frame, a positioning seat is disposed at the bottom of the inner side of the connecting frame, and a positioning groove is provided inside the positioning seat. A second electrically controlled push rod is disposed at the top of the inner side of the connecting frame, and a pressing seat is disposed at the output end of the second electrically controlled push rod. A ratchet seat is disposed in the middle section of the inner side of the pressing seat.

[0009] Furthermore, the tensioning assembly also includes a tension spring, and a tension rope is provided between the connecting frame and the mounting base, with a tension detector connected to the middle section of the tension rope.

[0010] Furthermore, the connecting frame is elastically connected to the mounting base via a tension spring, and the inner contour of the mounting base fits into the outer contour of the connecting frame.

[0011] Furthermore, the bottom contour dimension of the pressing seat matches the top contour dimension of the positioning seat, and the outer contour dimension of the ratchet seat matches the outer contour dimension of the positioning groove.

[0012] Furthermore, the first motor drives the steering seat to rotate through the meshing of meshing gears and meshing teeth, and the first electrically controlled push rod drives the extension seat to rise and fall inside the steering seat.

[0013] Furthermore, the acquisition component includes a connector, an outer end of which is fitted with a roller, and a lap speed detector is disposed between the roller and the connector.

[0014] Furthermore, the connecting seat is fixedly connected to the mounting seat, and the fitting wheel is fitted to the outer surface of the connecting frame.

[0015] Furthermore, the support assembly includes a second sliding seat, a third electric actuator is disposed at the top outer end of the second sliding seat, and a fitting seat is disposed at the output end of the third electric actuator, and a second lead screw connecting seat is disposed at the outer end of the second sliding seat.

[0016] Furthermore, the structure of the second fixing component is the same as that of the first fixing component, and the second fixing component is fixedly connected to the base. Beneficial effects

[0017] 1. This application allows the tension band to be pressed into the positioning groove via a ratchet seat. The structural design of the positioning groove enhances friction during the pressing process, effectively preventing the tension band from slipping out during stretching. Simultaneously, the rotation direction of the ratchet seat is opposite to the stretching direction of the tension band, enabling locking of the tension band within the positioning groove, thereby significantly improving the stability of the tension band under tension. This locking method only requires placing the tension band within the positioning seat to complete the fixation, reducing cumbersome locking steps, effectively simplifying the operation process, and improving testing efficiency.

[0018] 2. This application can drive the first sliding seat to slide along the first sliding rail through the first lead screw connecting seat, thereby causing the first fixed component to move synchronously, realizing the stretching of the tension band and completing the basic test of tensile performance. During the stretching process, the first electrically controlled push rod drives the extension seat to move downward, simulating the downward pressing action when a real person applies force. The first motor drives the steering seat to rotate through the meshing gear, causing the first fixed component to rotate accordingly, simulating the posture change of the elbow during the stretching process. The second motor drives the mounting seat to rotate through the steering head, further driving the first fixed component to adjust the angle, simulating the rotation habit of the wrist. Through the above multi-dimensional adjustment, the device can realistically reproduce the force trajectory of the human body when using the tension band. Compared with the traditional single-axis tensile testing method, this design can more accurately collect the force data of the tension band under actual use, thereby significantly improving the authenticity and accuracy of the test results.

[0019] 3. The bonding seat of this application serves as an adjustable fulcrum, providing support for the tension band during stretching. This simulates the typical scenario of pulling the band downwards around a crossbar, expanding the diversity of testing conditions. The second electric control screw drives the second sliding seat to move horizontally via the second screw connector, changing the horizontal position of the bonding seat. The third electric actuator drives the bonding seat to rise and fall, adjusting its vertical height. Together, these two mechanisms enable flexible adjustment of the fulcrum position, simulating the user's operation mode of stretching the tension band using different parts as support points. The high-strength locking of the tension band by the first and second fixing components ensures good stability under various postures and stress conditions, providing reliable assurance for accurate testing in complex conditions.

[0020] 4. The mounting base of this application is elastically connected to the connecting frame via a tension spring. When the first fixing component stretches the tension band, the rebound force generated by the tension band is transmitted to the tension spring through the connecting frame, causing the spring to stretch and drive the connecting frame to slide within the mounting base. A tension rope is provided between the connecting frame and the mounting base. When the connecting frame moves, the tension rope is straightened and is in a taut state. At this time, the tension detector can obtain the tensile force on the tension band in real time by reading the tension value of the tension rope, realizing quantitative detection of tensile performance. At the same time, the contact wheel is tightly attached to the outer surface of the connecting frame. When the connecting frame moves within the mounting base under the action of tension... During sliding, the bonding wheel rotates accordingly. The equipment can control the first electric control screw to reciprocate the tension belt at a uniform speed, so that the connecting frame slides at a uniform speed and the bonding wheel also maintains a uniform rotation speed. The rotation speed detector records the rotation data in this state. If the tension belt experiences elastic decay or local damage after repeated stretching, it will generate non-uniform sliding resistance during the stretching process, resulting in uneven sliding speed of the connecting frame and fluctuations in the rotation of the bonding wheel. By monitoring the rotation uniformity through the rotation speed detector, the equipment can accurately determine whether the tension belt has tension damage or abnormal elasticity, thereby achieving a qualitative assessment of the durability performance of the tension belt. Attached Figure Description

[0021] To more clearly illustrate the technical solution of this application, the accompanying drawings used in this application will be briefly described below. Obviously, the drawings described below are merely some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without any creative effort.

[0022] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a tensile performance testing device for a fitness resistance band according to this application; Figure 2 Figure A shows a schematic diagram of the tensile component structure of a tensile performance testing device for a fitness resistance band according to this application; Figure 3Figure B shows a schematic diagram of the tensile component structure of a tensile performance testing device for a fitness resistance band according to this application; Figure 4 Figure C shows a schematic diagram of the tensile component structure of a tensile performance testing device for a fitness resistance band according to this application; Figure 5 This is a schematic diagram of the internal structure of the mounting base for a tensile performance testing device for a fitness resistance band according to this application; Figure 6 This is a schematic diagram of the connecting frame structure of a tensile performance testing device for a fitness resistance band according to this application; Figure 7 This application relates to a device for testing the tensile performance of a fitness resistance band. Figure 3 Enlarged structural diagram at point A in the middle; Figure 8 This is a schematic diagram of the testing state of a tensile performance testing device for a fitness resistance band according to this application.

[0023] Explanation of reference numerals in the attached drawings: 1. Base; 2. First sliding rail; 3. Tension assembly; 301. First sliding seat; 302. First lead screw connecting seat; 303. Rotating base; 304. First motor; 305. Meshing gear; 306. Steering seat; 307. Meshing teeth; 308. First electrically controlled push rod; 309. Extension seat; 310. Second motor; 311. Steering head; 312. Mounting seat; 313. Tension spring; 314. Tension rope; 315. Tension detector; 4. First fixing assembly; 01. Connecting frame; 402. Positioning seat; 403. Positioning groove; 404. Second electric control push rod; 405. Pressing seat; 406. Ratchet seat; 5. Acquisition component; 501. Connecting seat; 502. Cyclic speed detector; 503. Adhesion wheel; 6. First electric control lead screw; 7. Second sliding rail; 8. Support component; 801. Second sliding seat; 802. Third electric push rod; 803. Adhesion seat; 804. Second lead screw connecting seat; 9. Second electric control lead screw; 10. Second fixing component; 11. Tension band. Detailed Implementation

[0024] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0026] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0027] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0028] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" 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. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0029] Please see Figures 1 to 8 The tensile performance testing device for a fitness resistance band provided in this application includes a base 1 and a tensioning assembly 3. A first sliding rail 2 is mounted on the top outer end of the base 1, and the tensioning assembly 3 is mounted on the top outer end of the first sliding rail 2. The tensioning assembly 3 includes a first sliding seat 301, a first lead screw connecting seat 302 is mounted on the outer end of the first sliding seat 301, a rotating base 303 is mounted on the top outer end of the first sliding seat 301, a first motor 304 is mounted on the outer end of the rotating base 303, and a meshing device is mounted on the output end of the first motor 304. Gear 305, inside the rotating base 303 is a steering seat 306, the bottom of the steering seat 306 is provided with meshing teeth 307, inside the steering seat 306 is a first electrically controlled push rod 308, the output end of the first electrically controlled push rod 308 is provided with an extension seat 309, the outer end of the extension seat 309 is provided with a second motor 310, and the output end of the second motor 310 is provided with a steering head 311, the end of the steering head 311 away from the second motor 310 is connected to a mounting seat 312, inside the mounting seat 312 is a first fixing component 4.

[0030] In some embodiments, the first fixing component 4 includes a connecting frame 401. A positioning seat 402 is disposed at the bottom inner end of the connecting frame 401, and a positioning groove 403 is formed inside the positioning seat 402. A second electrically controlled push rod 404 is disposed at the top inner side of the connecting frame 401, and a pressing seat 405 is disposed at the output end of the second electrically controlled push rod 404. A ratchet seat 406 is disposed in the middle section inside the pressing seat 405. The bottom contour dimension of the pressing seat 405 matches the top contour dimension of the positioning seat 402, and the outer contour dimension of the ratchet seat 406 matches the outer contour dimension of the positioning groove 403. The first motor 304 drives the steering seat 306 to rotate through the meshing of the meshing gear 305 and the meshing tooth 307, and the first electrically controlled push rod 308 drives the extension seat 309 to rise and fall inside the steering seat 306. A first electrically controlled lead screw 6 is installed at the top outer end of the base 1, and a second sliding rail 7 is installed at the top outer end of the base 1. A support assembly 8 is installed at the top outer end of the second sliding rail 7. The support assembly 8 includes a second sliding seat 801. A third electrically driven rod 802 is installed at the top outer end of the second sliding seat 801. A fitting seat 803 is installed at the output end of the third electrically driven rod 802. A second lead screw connecting seat 804 is installed at the outer end of the second sliding seat 801. A second electrically controlled lead screw 9 is installed at the top outer end of the base 1. A second fixing assembly 10 is installed at the top outer end of the base 1. The structure of the second fixing assembly 10 is the same as that of the first fixing assembly 4. The second fixing assembly 10 is fixedly connected to the base 1. A tension band 11 is fixed between the first fixing assembly 4 and the second fixing assembly 10.

[0031] It should be noted that the operator inserts both ends of the tension band 11 to be tested into the first fixing component 4 and the second fixing component 10, respectively. This allows the tension band 11 to contact the positioning seat 402. The second electrically controlled push rod 404 operates, causing the pressing seat 405 to move downwards. This allows the positioning seat 402 to fit against the pressing seat 405. During this fitting process, the ratchet seat 406 presses the tension band 11 into the positioning groove 403. The shape of the positioning groove 403 increases the friction of the tension band 11 during the pressing process. This design effectively prevents the tension band 11 from falling off during the stretching process. In addition, the rotation direction of the ratchet seat 406 is opposite to the direction of the tension force on the tension band 11. This allows the tension band 11 to be locked in place by the ratchet seat 406 when it is in the positioning groove 403. This greatly improves the stability of the tension band 11 during the stretching process. Furthermore, with this design, the operator only needs to place the tension band 11 into the positioning seat 402 to achieve positioning, without too many locking steps. This greatly simplifies the locking process of the tension band 11, thereby improving the testing efficiency of the equipment.

[0032] After the tension band 11 is fixed, the first electric control screw 6 operates, which causes the first screw connecting seat 302 to drive the first sliding seat 301 to slide along the first sliding rail 2. During the sliding of the first sliding seat 301, the first fixing component 4 can be moved synchronously. This operation can stretch the tension band 11, thereby realizing the tensile performance test of the tension band 11. During the stretching of the tension band 11 by the equipment, the first electric control push rod 308 operates, which can drive the extension seat 309 to move downward. This allows the equipment to simulate the downward force applied by a real person when pulling the tension band 11. The first motor 304 drives the meshing gear 305 to rotate, which can cause the steering seat 306 to rotate. During the rotation of the steering seat 306, the first fixing component 4 can be moved and adjusted synchronously. This design can effectively simulate the rotation of the elbow when a real person uses the tension band 11.

[0033] It should be further explained that the second motor 310, through the steering head 311, drives the mounting base 312 to rotate, which in turn drives the first fixing component 4 to rotate synchronously. This design simulates the wrist rotation habits of a real person using the resistance band 11. Through the above operation, the device can simulate the force application habits of a real person using the resistance band 11. Because common tensile testing equipment on the market mainly performs uniform, unidirectional stretching of the resistance band 11 until it breaks, but the use of the resistance band 11 is usually dynamic and reciprocating, including rapid explosive force stretching and slow controlled force release. Existing equipment cannot simulate this complex dynamic loading and cyclic fatigue process. Through the above design, compared to simply stretching the resistance band 11 to test the tensile force, this design can more accurately obtain the tensile force value when a real person pulls the resistance band 11, which improves the accuracy of the device's tensile performance testing. In addition, the bonding seat 803 provides a fulcrum for the tension band 11 during stretching, which can simulate the common operation of pulling the tension band 11 down around the crossbar in actual use. This allows the equipment to detect the tensile performance of the tension band 11 under different usage conditions. By operating the second electric control screw 9, the second screw connecting seat 804 can drive the second sliding seat 801 to move, which changes the position of the bonding seat 803. The third electric push rod 802 can drive the bonding seat 803 to move up and down. Through the above operations, the bonding seat 803 can change the fulcrum position of the tension band 11, which can simulate the operator's operation of using different positions of the tension band 11 as fulcrums. Thanks to the high-strength locking of the tension band 11 by the first fixing component 4 and the second fixing component 10, the fixed stability of the tension band 11 can be guaranteed during high-strength multi-position stretching.

[0034] Please see Figures 1 to 8The tensioning component 3 also includes a tension spring 313. A tension rope 314 is provided between the connecting frame 401 and the mounting seat 312. A tension detector 315 is connected to the middle section of the tension rope 314. The connecting frame 401 is elastically connected to the mounting seat 312 through the tension spring 313. The inner contour of the mounting seat 312 fits the outer contour of the connecting frame 401. A collection component 5 is installed at the outer end of the mounting seat 312.

[0035] In some embodiments, the acquisition component 5 includes a connecting seat 501, an adhesion wheel 503 is disposed at the outer end of the connecting seat 501, a lap speed detector 502 is disposed between the adhesion wheel 503 and the connecting seat 501, the connecting seat 501 is fixedly connected to the mounting seat 312, and the adhesion wheel 503 is in contact with the outer surface of the connecting frame 401.

[0036] The specific operation is as follows: the mounting base 312 is connected to the connecting frame 401 via a tension spring 313. During the stretching displacement of the tension band 11 by the first fixing component 4, the rebound force generated by the tension band 11 is transmitted to the tension spring 313 through the connecting frame 401. This causes the tension spring 313 to stretch, and the connecting frame 401 to slide within the mounting base 312. A tension rope 314 is provided between the connecting frame 401 and the mounting base 312. When the connecting frame 401 moves within the mounting base 312, the tension rope 314 is stretched taut. At this time, the tension detector 315 can directly obtain the tensile force generated at the tension band 11 by reading the tension value of the tension rope 314. The contact wheel 503 is in contact with the outer surface of the connecting frame 401. Due to the influence of the tensile force, the connecting frame 401... The mounting seat 312 slides within the seat, causing the connecting frame 401 to rotate the bonding wheel 503 during this sliding motion. After the tension band 11 is reciprocated, the device can achieve uniform tension by controlling only the first electric control screw 6. This allows the connecting frame 401 to slide at a constant speed, and the bonding wheel 503 also rotates at a constant speed. The lap speed detector 502 records this state. If the elasticity of the tension band 11 is problematic after repeated tension tests, there will be a feeling of jamming during the tensioning process. This prevents the connecting frame 401 from being pulled out evenly, and the bonding wheel 503 from rotating at a constant speed. Through this design, the device can accurately determine whether the tension band 11 has been damaged after repeated tension tests by using the bonding wheel 503 and the lap speed detector 502.

[0037] When using the tensile performance testing device for fitness resistance bands of this application, the operator places both ends of the resistance band 11 to be tested into the first fixing component 4 and the second fixing component 10, respectively. This allows the resistance band 11 to contact the positioning seat 402. The second electrically controlled push rod 404 operates, causing the pressing seat 405 to move downwards. This allows the positioning seat 402 to fit against the pressing seat 405. During this fitting process, the ratchet seat 406 presses the resistance band 11 into the positioning groove 403. The shape of the positioning groove 403 increases the resistance band 11's position during the pressing process. The friction force effectively prevents the tension band 11 from falling off during the stretching process. In addition, the rotation direction of the ratchet seat 406 is opposite to the direction of the tension force on the tension band 11. This allows the tension band 11 to be locked in place by the ratchet seat 406 when it is in the positioning groove 403. This design greatly improves the stability of the tension band 11 during the stretching process. Furthermore, with this design, the operator only needs to place the tension band 11 into the positioning seat 402 to achieve positioning without too many locking steps. This greatly simplifies the locking process of the tension band 11, thereby improving the detection efficiency of the equipment. After the tension band 11 is fixed, the first electrically controlled lead screw 6 operates, causing the first lead screw connecting seat 302 to drive the first sliding seat 301 to slide along the first sliding rail 2. During the sliding of the first sliding seat 301, the first fixing component 4 is synchronously displaced. This operation stretches the tension band 11, thereby enabling the testing of the tension performance of the tension band 11. During the stretching of the tension band 11, the first electrically controlled push rod 308 operates, causing the extension seat 309 to move downwards. This allows the device to simulate the downward force applied by a real person when pulling the tension band 11. The first motor 304 drives the meshing gear 305 to rotate, causing the steering seat 306 to rotate. During the rotation of the steering seat 306, the first fixing component 4 is synchronously displaced and adjusted. This design effectively simulates the elbow movement of a real person using the tension band 11. In addition to the rotation of the part, the second motor 310 works, which drives the mounting seat 312 to rotate through the steering head 311. The mounting seat 312 can drive the first fixed component 4 to rotate synchronously. This design can simulate the wrist rotation habit of a real person using the resistance band 11. Through the above operation, the device can simulate the force application habit of a real person using the resistance band 11. Because the common tensile testing equipment on the market mainly stretches the resistance band 11 at a constant speed and in one direction until it breaks, but the use of the resistance band 11 is usually dynamic and reciprocating, including rapid explosive force stretching and slow controlled force release. Existing equipment cannot simulate this complex dynamic loading and cyclic fatigue process. Through the above design, compared with the simple stretching of the resistance band 11 to test the tensile force, this design can more accurately obtain the tensile force value when a real person pulls the resistance band 11, which can improve the accuracy of the tensile performance test of the device. Next, since the bonding seat 803 can provide a fulcrum for the tension band 11 during stretching, this can simulate the common operation of pulling the tension band 11 down around the crossbar in actual use. This allows the equipment to detect the tensile performance of the tension band 11 under different usage conditions. By operating the second electric control screw 9, the second screw connecting seat 804 can drive the second sliding seat 801 to move, which changes the position of the bonding seat 803. The third electric push rod 802 can drive the bonding seat 803 to move up and down. Through the above operations, the bonding seat 803 can change the fulcrum position of the tension band 11. This can simulate the operation of the operator using different positions of the tension band 11 as fulcrums. Thanks to the high-strength locking of the tension band 11 by the first fixing component 4 and the second fixing component 10, the fixed stability of the tension band 11 can be guaranteed when it is subjected to high-strength multi-position stretching. Subsequently, the mounting base 312 is connected to the connecting frame 401 via the tension spring 313. During the process of the first fixing component 4 stretching and displacing the tension band 11, the rebound force generated by the tension band 11 will be transmitted to the tension spring 313 through the connecting frame 401. This causes the tension spring 313 to stretch and the connecting frame 401 to slide within the mounting base 312. A tension rope 314 is provided between the connecting frame 401 and the mounting base 312. When the connecting frame 401 moves within the mounting base 312, the tension rope 314 will be stretched and taut. At this time, the tension detector 315 can intuitively obtain the tensile force generated at the tension band 11 by reading the tension value of the tension rope 314. Finally, because the bonding wheel 503 is in contact with the outer surface of the connecting frame 401, the connecting frame 401 slides within the mounting seat 312 due to the tensile force. This causes the bonding wheel 503 to rotate during the sliding displacement. After the equipment reciprocates the tension band 11, it can achieve uniform tension by controlling only the first electric control screw 6. This allows the connecting frame 401 to slide at a uniform speed. At this time, the bonding wheel 503 also rotates at a uniform speed. The lap speed detector 502 can record this state. After the tension band 11 has undergone repeated tension tests, if the elasticity of the tension band 11 is problematic, there will be a feeling of jamming during the tensioning process. This prevents the connecting frame 401 from being pulled out evenly, and prevents the bonding wheel 503 from rotating at a uniform speed. Through this design, the equipment can accurately determine whether the tension band 11 has been damaged after repeated tension tests by using the bonding wheel 503 and the lap speed detector 502.

[0038] This document uses specific examples to illustrate the principles and implementation methods of this application. The examples are merely for the purpose of helping to understand the methods and core ideas of this application. The above descriptions are only preferred embodiments of this application. It should be noted that due to the limitations of written expression, and the existence of an infinite number of specific structures, those skilled in the art can make various improvements, modifications, or variations without departing from the principles of this application, and can also combine the above technical features in an appropriate manner. These improvements, modifications, variations, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of this application.

Claims

1. A device for testing the tensile performance of a fitness resistance band, characterized in that, The system includes a base and a tensioning assembly. A first sliding rail is mounted on the top outer end of the base, and a tensioning assembly is mounted on the top outer end of the first sliding rail. The tensioning assembly includes a first sliding seat, a first lead screw connecting seat on the outer end of the first sliding seat, a rotating platform on the top outer end of the first sliding seat, a first motor on the outer end of the rotating platform, a meshing gear on the output end of the first motor, a steering seat inside the rotating platform, meshing teeth on the bottom of the steering seat, a first electrically controlled push rod inside the steering seat, and an extension rod on the output end of the first electrically controlled push rod. The base has a second motor mounted on its outer end, and a steering head mounted on the output end of the second motor. The end of the steering head away from the second motor is connected to a mounting base. A first fixing component is mounted inside the mounting base, and a collection component is mounted on its outer end. A first electric control screw is mounted on the top outer end of the base, and a second sliding rail is mounted on the top outer end of the base. A support component is mounted on the top outer end of the second sliding rail. A second electric control screw is mounted on the top outer end of the base, and a second fixing component is mounted on the top outer end of the base. A tension band is fixed between the first fixing component and the second fixing component.

2. The tensile performance testing device for a fitness resistance band according to claim 1, characterized in that, The first fixing component includes a connecting frame, a positioning seat is disposed at the bottom of the inner side of the connecting frame, and a positioning groove is provided inside the positioning seat. A second electrically controlled push rod is disposed at the top of the inner side of the connecting frame, and a pressing seat is disposed at the output end of the second electrically controlled push rod. A ratchet seat is disposed in the middle section of the inner side of the pressing seat.

3. The tensile performance testing device for a fitness resistance band according to claim 2, characterized in that, The tensioning assembly also includes a tension spring, and a tension rope is provided between the connecting frame and the mounting base. A tension detector is connected to the middle section of the tension rope.

4. The tensile performance testing device for a fitness resistance band according to claim 3, characterized in that, The connecting frame is elastically connected to the mounting base via a tension spring, and the inner contour of the mounting base fits into the outer contour of the connecting frame.

5. The tensile performance testing device for a fitness resistance band according to claim 4, characterized in that, The bottom contour dimension of the pressing seat matches the top contour dimension of the positioning seat, and the outer contour dimension of the ratchet seat matches the outer contour dimension of the positioning groove.

6. The tensile performance testing device for a fitness resistance band according to claim 5, characterized in that, The first motor drives the steering seat to rotate through the meshing of the meshing gear and the meshing teeth, and the first electrically controlled push rod drives the extension seat to rise and fall inside the steering seat.

7. The tensile performance testing device for a fitness resistance band according to claim 6, characterized in that, The acquisition component includes a connector, an outer end of which is fitted with a roller, and a lap speed detector is disposed between the roller and the connector.

8. The tensile performance testing device for a fitness resistance band according to claim 7, characterized in that, The connecting seat is fixedly connected to the mounting seat, and the fitting wheel is fitted to the outer surface of the connecting frame.

9. The tensile performance testing device for a fitness resistance band according to claim 8, characterized in that, The support assembly includes a second sliding seat, a third electric actuator is mounted on the top outer end of the second sliding seat, and a fitting seat is mounted on the output end of the third electric actuator. A second lead screw connecting seat is mounted on the outer end of the second sliding seat.

10. A tensile performance testing device for a fitness resistance band according to claim 9, characterized in that, The structure of the second fixing component is the same as that of the first fixing component, and the second fixing component is fixedly connected to the base.

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