PU wheel tension detector

Abstract

The PU wheel tension detector comprises a base, the left side and the right side of the upper end of the base are each fixedly provided with a set of supporting frames, sliding blocks are installed in the supporting frames in a sliding mode, and a cross beam is fixedly installed between the two sets of sliding blocks. A mounting shaft provided with a PU wheel is placed between two groups of mounting frames, then a top cover is mounted through a bolt, then a first telescopic device is started to enable a V-shaped top plate to upwards abut against the PU wheel, then a motor is started to drive a lead screw to rotate to downwards move two groups of sliding seats, after the two groups of sliding seats move to designated positions, two groups of second telescopic devices are started, and the PU wheel is mounted on the top cover. The two sets of clamping parts clamp the PU wheel through cooperation of the friction parts, then the motor is started again to move the cross beam upwards, reading detection is conducted on the PU wheel through the tension detection device, a push plate and a sliding base are in movable contact through a ball, stretching and retracting between second telescopic devices cannot affect the tension detection result, and reading is more accurate.

Description

Technical Field

[0001] This utility model relates to the field of PU wheel testing technology, and in particular to a PU wheel tensile testing instrument. Background Technology

[0002] PU wheels, also known as PU injection wheels: Strictly speaking, PU is also a type of plastic, but additives are added during the production process, resulting in superior performance. The characteristics of PU injection wheels are: elasticity, which can play a certain role in shock absorption (even better than air wheels), good grip, not easy to slip, more wear-resistant, and good comfort performance.

[0003] Existing tensile testing instruments cannot perform targeted tensile testing on PU wheels. Not only is it inconvenient to fix the test in place, but the test data is also inaccurate and has too large an error. Utility Model Content

[0004] In order to overcome the above-mentioned defects in the existing technology, this utility model provides a PU wheel tensile testing instrument.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a PU wheel tensile testing instrument, including a base, a set of support frames fixedly installed on the left and right sides of the upper end of the base, a slider slidably installed inside the support frame, a crossbeam fixedly installed between the two sets of sliders, a fixed frame installed at the lower end of the crossbeam through a tensile testing device, a clamping mechanism provided on the fixed frame, a mounting groove provided in the middle of the upper end of the base, a set of mounting frames fixedly installed on the left and right sides of the mounting groove, a mounting shaft installed between the two sets of mounting frames, a PU wheel movably installed on the mounting shaft, and a positioning mechanism provided at the bottom of the PU wheel.

[0006] Furthermore, a motor is fixedly installed on the inner bottom of the support frame, and a lead screw is fixedly connected to the power output shaft of the motor. The lead screw is movably installed inside the support frame, and a slider is movably installed on the lead screw.

[0007] Furthermore, the clamping mechanism includes a second telescopic device, with one set of the second telescopic device fixedly installed on the outer side of each of the left and right ends of the fixed frame. A push plate is fixedly installed at the telescopic end of the second telescopic device. Several sets of balls are provided on the inner surface of the push plate. A slide block is installed in contact with the inner side of the balls. The slide block is slidably installed on the inner side of the fixed frame.

[0008] Furthermore, a slide rail is fixedly installed on the upper inner wall of the fixed frame, and a slide block is slidably installed on the slide rail. The two sets of slide blocks are fixedly connected by a spring, and the spring is located on the upper inner side of the slide block.

[0009] Furthermore, the lower end of the slide is provided with a clamping part, and the inner side of the clamping part is provided with a friction part, which is used to contact the surface of the PU wheel.

[0010] Furthermore, a set of top covers is detachably mounted on the top of the mounting bracket by bolts, and the top covers are used to lock the mounting shaft inside the mounting bracket.

[0011] Furthermore, the positioning mechanism includes a first telescopic device, which is fixedly installed inside the mounting groove. A V-shaped top plate is fixedly installed at the telescopic end of the first telescopic device, and the V-shaped top plate is in contact with the bottom of the PU wheel.

[0012] The beneficial effects of this utility model are as follows: The mounting shaft with the PU wheel is placed between two sets of mounting brackets, and then the top cover is installed with bolts. The first telescopic device is then activated, causing the V-shaped top plate to press the PU wheel upwards. Next, the motor drives the lead screw to rotate and move the two sets of slides downwards. After moving to the designated position, the two sets of second telescopic devices are activated, causing the two clamping parts to clamp the PU wheel through the cooperation of the friction parts. Then, the motor is activated again to move the crossbeam upwards. The PU wheel is then read and tested using a tension detection device. The push plate and slides are in active contact through ball bearings, ensuring that the extension and retraction of the second telescopic devices do not affect the tension test results, making the readings more accurate. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0014] Figure 1 This is the front view of the present invention;

[0015] Figure 2 This is a side view of the positioning mechanism of this utility model;

[0016] Figure 3 This is a schematic diagram of the internal structure of the support frame of this utility model;

[0017] Figure 4 This is an enlarged view of section A of this utility model.

[0018] In the diagram: 1. Base, 2. Support frame, 3. Mounting frame, 4. Mounting slot, 5. First telescopic device, 6. V-shaped top plate, 7. PU wheel, 8. Mounting shaft, 9. Top cover, 10. Clamping part, 11. Crossbeam, 12. Tension detection device, 13. Fixing frame, 14. Second telescopic device, 15. Push plate, 16. Slide block, 161. Friction part, 17. Slide rail, 18. Spring, 19. Motor, 20. Lead screw, 21. Slider, 22. Ball bearing. Detailed Implementation

[0019] To more clearly illustrate the technical solution of this utility model, the following description is made in conjunction with the accompanying drawings. Obviously, the drawings described below are only one embodiment of this utility model. For those skilled in the art, other embodiments can be obtained based on these drawings and embodiments without creative effort, and all of them fall within the protection scope of this utility model.

[0020] like Figure 1 and Figure 3 As shown, this utility model includes a base 1. A set of support frames 2 are fixedly installed on the left and right sides of the upper end of the base 1. A slider 21 is slidably installed inside the support frame 2. A motor 19 is fixedly installed on the inner bottom of the support frame 2 by bolts. A lead screw 20 is fixedly connected to the power output shaft of the motor 19. The lead screw 20 is movably installed inside the support frame 2 by bearings. The slider 21 is movably installed on the lead screw 20. A crossbeam 11 is fixedly installed between the two sets of sliders 21. A fixing frame 13 is installed on the lower end of the crossbeam 11 through a tension detection device 12. A clamping mechanism is provided on the fixing frame 13.

[0021] like Figure 1 and Figure 4 As shown, the clamping mechanism includes a second telescopic device 14. A set of the second telescopic device 14 is fixedly installed on the outer side of each of the left and right ends of the fixed frame 13. A push plate 15 is fixedly installed at the telescopic end of the second telescopic device 14. A plurality of sets of balls 22 are provided on the inner surface of the push plate 15. A slide block 16 is installed in contact with the inner side of the balls 22. A slide rail 17 is fixedly installed on the upper inner wall of the fixed frame 13. The slide block 16 is slidably installed on the slide rail 17. The two sets of slide blocks 16 are fixedly connected by a spring 18. The spring 18 is located in the upper part of the inner side of the slide block 16.

[0022] like Figure 1 As shown, a mounting groove 4 is provided in the upper middle part of the base 1. A set of mounting brackets 3 are fixedly installed on the left and right sides of the mounting groove 4 by bolts. A mounting shaft 8 is installed between the two sets of mounting brackets 3. A PU wheel 7 is movably installed on the mounting shaft 8. A set of top covers 9 are detachably installed on the top of the mounting bracket 3 by bolts. The top covers 9 are used to lock the mounting shaft 8 inside the mounting bracket 3.

[0023] like Figure 1 and Figure 4 As shown, the lower end of the slide block 16 is provided with a clamping part 10, and the inner side of the clamping part 10 is provided with a friction part 161, which is used to contact the surface of the PU wheel 7.

[0024] like Figure 1 and Figure 2As shown, the bottom of the PU wheel 7 is provided with a positioning mechanism, which includes a first telescopic device 5. The first telescopic device 5 is fixedly installed inside the mounting groove 4. The telescopic end of the first telescopic device 5 is fixedly installed with a V-shaped top plate 6, and the V-shaped top plate 6 is in contact with the bottom of the PU wheel 7.

[0025] In use, this invention involves placing the mounting shaft 8, on which the PU wheel 7 is mounted, between two sets of mounting brackets 3, and then installing the top cover 9 with bolts. The first telescopic device 5 is then activated, causing the V-shaped top plate 6 to press the PU wheel 7 upwards. Next, the motor 19 drives the lead screw 20 to rotate and move the two sets of sliding blocks 16 downwards. After reaching the designated position, the two sets of second telescopic devices 14 are activated, causing the two sets of clamping parts 10 to clamp the PU wheel 7 through the cooperation of the friction parts 161. Then, the motor 19 is activated again to move the crossbeam 11 upwards. The tensile testing device 12 measures the reading of the PU wheel 7. The push plate 15 and the sliding block 16 are in contact via ball bearings 22, ensuring that the extension and retraction of the second telescopic devices 14 do not affect the tensile test results, resulting in more accurate readings.

[0026] The above embodiments are merely exemplary embodiments of the present utility model and are not intended to limit the present utility model. The scope of protection of the present utility model is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to the present utility model within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of the present utility model.

Claims

1. A PU wheel tensile testing instrument, comprising a base (1), characterized in that: A set of support frames (2) are fixedly installed on the left and right sides of the upper end of the base (1). A slider (21) is slidably installed inside the support frame (2). A crossbeam (11) is fixedly installed between the two sets of sliders (21). A fixing frame (13) is installed at the lower end of the crossbeam (11) through a tensile testing device (12). A clamping mechanism is provided on the fixing frame (13). An installation groove (4) is provided in the middle of the upper end of the base (1). A set of installation frames (3) is fixedly installed on the left and right sides of the installation groove (4). An installation shaft (8) is installed between the two sets of installation frames (3). A PU wheel (7) is movably installed on the installation shaft (8). A positioning mechanism is provided at the bottom of the PU wheel (7).

2. The PU wheel tensile testing instrument according to claim 1, characterized in that, A motor (19) is fixedly installed on the inner bottom of the support frame (2). A lead screw (20) is fixedly connected to the power output shaft of the motor (19). The lead screw (20) is movably installed inside the support frame (2). A slider (21) is movably installed on the lead screw (20).

3. The PU wheel tensile testing instrument according to claim 1, characterized in that, The clamping mechanism includes a second telescopic device (14), which is fixedly installed on the outer sides of the left and right ends of the fixed frame (13). A push plate (15) is fixedly installed at the telescopic end of the second telescopic device (14). A number of balls (22) are provided on the inner surface of the push plate (15). A slide (16) is installed in contact with the inner side of the balls (22). The slide (16) is slidably installed on the inner side of the fixed frame (13).

4. The PU wheel tensile testing instrument according to claim 3, characterized in that, A slide rail (17) is fixedly installed on the upper inner wall of the fixed frame (13), and a slide block (16) is slidably installed on the slide rail (17). The two sets of slide blocks (16) are fixedly connected by a spring (18), and the spring (18) is located on the upper part of the inner side of the slide block (16).

5. A PU wheel tensile testing instrument according to claim 4, characterized in that, The lower end of the slide (16) is provided with a clamping part (10), and the inner side of the clamping part (10) is provided with a friction part (161), which is used to contact the surface of the PU wheel (7).

6. The PU wheel tensile testing instrument according to claim 1, characterized in that, A set of top covers (9) are detachably mounted on the top of the mounting bracket (3) by bolts. The top covers (9) are used to lock the mounting shaft (8) inside the mounting bracket (3).

7. A PU wheel tensile testing instrument according to claim 6, characterized in that, The positioning mechanism includes a first telescopic device (5), which is fixedly installed inside the mounting groove (4). A V-shaped top plate (6) is fixedly installed at the telescopic end of the first telescopic device (5), and the V-shaped top plate (6) is in contact with the bottom of the PU wheel (7).

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