A soft-bottom carpet resilience testing device

Abstract

The present invention relates to the field of soft-bottom carpet testing, and specifically to a resilience testing device for soft-bottom carpets, which includes a support platform and a support frame installed on the top of the support platform. A number of equally spaced bearing mechanisms are rotatably installed on the top of the support platform. An intermittent rotation mechanism for driving the bearing mechanisms to rotate intermittently is installed inside the support platform. A resilience testing mechanism located above the bearing mechanisms is arranged on the front surface of the support frame. In the present invention, the driving motor drives the bearing mechanisms to rotate intermittently through the intermittent rotation mechanism, which can continuously adjust the positions of the soft-bottom carpet being hammered and pressed, and can conduct multiple tests on different parts of the soft-bottom carpet, improving the testing accuracy. At the same time, the driving motor drives a number of resilience testing mechanisms to reciprocate up and down at different speeds through the reciprocating movement mechanism, and simultaneously tests the resilience effects of the soft-bottom carpet under different hammering forces, improving the testing efficiency, increasing the diversity of the tests, and thus improving the accuracy of the test results.

Description

Technical Field

[0001] The present invention relates to the technical field of soft-bottom carpet testing, and particularly to a device for testing the resilience of a soft-bottom carpet. Background Art

[0002] A rubber soft-bottom carpet refers to a carpet made of high-molecular materials such as natural rubber, synthetic rubber, and other components. The resilience test of a rubber soft-bottom carpet is to evaluate the speed and degree of the carpet's recovery to its original state after being subjected to heavy pressure, which is one of the key factors for measuring the comfort, durability, and usage effect of the carpet, and is crucial for ensuring product performance and user satisfaction.

[0003] Currently, for the resilience test of rubber soft-bottom carpets, usually a sample of a rubber soft-bottom carpet is placed on a test platform, and then a hammering member is suspended directly above the rubber soft-bottom carpet by a lifting mechanism. After that, the hammering member is allowed to fall to impact the rubber soft-bottom carpet for the impact test. By observing the speed and degree of the rubber soft-bottom carpet's recovery to its original state after being subjected to heavy pressure, the resilience performance of the rubber soft-bottom carpet is judged. However, the above-mentioned method for testing the resilience of soft-bottom carpets has the following deficiencies: 1. When the existing test device conducts the test, the soft-bottom carpet is fixed on the test platform, and the hammering member always impacts the same position on the soft-bottom carpet, so the test results are relatively single. When conducting multiple groups of resilience tests to improve the test accuracy, using the same test device for multiple groups of tests takes a long time, which will affect the overall test efficiency. When using multiple test devices for testing simultaneously, each test device requires an independent power source for driving, resulting in a high test cost; 2. When the existing test device conducts impact tests with different contact areas, different hammering members need to be replaced, and the interval pause time between adjacent tests is relatively long. Moreover, when multiple test devices need to be replaced, the overall interval pause time will be further increased, affecting the test efficiency. Summary of the Invention

[0004] To solve the above problems, the present invention provides a device for testing the resilience of a soft-bottom carpet, which includes a support platform and a support frame installed on the top of the support platform. A plurality of equally spaced bearing mechanisms are rotatably installed on the top of the support platform. An intermittent rotation mechanism for driving the bearing mechanisms to rotate intermittently is installed inside the support platform. A resilience test mechanism is arranged on the front surface of the support frame above the bearing mechanisms. A reciprocating movement mechanism for driving the resilience test mechanism to move up and down is arranged inside the support platform. A driving motor for driving the intermittent rotation mechanism and the reciprocating movement mechanism to operate is also installed inside the support platform.

[0005] The resilience testing mechanism includes a movable component slidably mounted up and down on the front of the support frame. A number of hammering components with different contact areas are evenly distributed circumferentially at the bottom of the movable component. A switching component for pushing one of the hammering components to move downward is rotatably mounted inside the movable component. A stepping motor for driving the switching component to rotate is mounted at the top of the movable component.

[0006] The reciprocating movement mechanism includes a crankshaft component rotatably mounted inside the support platform and having a number of different rotation radii. The crankshaft component is connected to a number of movable components through a rotatably connected connecting component and drives each movable component to reciprocate up and down at different speeds.

[0007] In a possible implementation manner, the carrying mechanism includes a carrying turntable rotatably mounted on the top of the support platform. A first rotating shaft is coaxially and fixedly connected to the bottom of the carrying turntable. The first rotating shaft is rotatably mounted at the upper end of the support platform. A number of balls are evenly distributed circumferentially at the bottom of the carrying turntable. The bottom surfaces of the balls are in contact with the top surface of the support platform.

[0008] In a possible implementation manner, the intermittent rotation mechanism includes a number of transmission rods evenly distributed at equal intervals and rotatably mounted on the top wall of the inner cavity of the support platform. A dial is coaxially and fixedly connected to the outside of the transmission rod. The bottom end of the first rotating shaft penetrates into the inside of the support platform and is fixedly connected with a sprocket wheel. The sprocket wheel is matched with the dial. Adjacent transmission rods are connected by belt drive. The drive motor is connected to the leftmost transmission rod through a bevel gear set.

[0009] In a possible implementation manner, a number of chutes evenly distributed at equal intervals are provided on the front of the support frame. The movable component includes a slider slidably mounted up and down inside the corresponding chute. A housing is fixedly connected to the front of the slider. The housing is located directly above the corresponding carrying turntable.

[0010] In a possible implementation manner, the hammering component includes a movable rod slidably mounted up and down at the bottom of the housing. A top plate is fixedly connected to the top of the movable rod. A return spring is fixedly connected between the bottom of the top plate and the inner wall of the corresponding housing. The bottom of the movable rod penetrates through the bottom of the housing and is fixedly connected with a hammering block. The contact areas of the bottoms of a number of the hammering blocks gradually decrease in the clockwise direction.

[0011] In a possible implementation manner, a number of inclined support plates are evenly distributed circumferentially on the side surface of the movable rod. The bottom of the inclined support plate is fixedly connected to the top of the hammering block.

[0012] In a possible implementation manner, the heights of a number of the sliders gradually decrease at equal intervals from left to right.

[0013] In one possible implementation, the switching assembly includes a disc rotatably mounted inside the shell, the disc is located above the top plate, a raised block is fixedly connected to the edge of the bottom of the disc, and inclined surfaces are provided on the left and right sides of the raised block. The stepper motor is fixedly mounted on the top of the shell, and the bottom of the stepper motor output shaft is fixedly connected to the top of the disc.

[0014] In one possible implementation, the crankshaft assembly includes a second rotating shaft rotatably mounted inside a support frame, the second rotating shaft is provided with a plurality of evenly distributed cranks at equal intervals, the rotation radius of the plurality of cranks gradually decreases evenly from left to right, a plurality of evenly distributed balancing blocks are fixedly mounted on the outer side of the second rotating shaft, and the drive motor is connected to the second rotating shaft through a belt transmission.

[0015] In a possible implementation, the connecting assembly includes a connecting rod rotatably mounted on a crank, a top of the connecting rod is rotatably connected to a connecting seat, and the connecting seat is fixedly mounted on the rear side of the corresponding slider.

[0016] The beneficial effects of the present invention are as follows: 1. The present invention drives the bearing mechanism to intermittently rotate through the intermittent rotating mechanism by driving the motor, so as to continuously adjust the hammering and pressing position of the soft bottom carpet, and can perform multiple tests on different parts of the soft bottom carpet, thereby improving the accuracy of the test. At the same time, the driving motor drives a plurality of resilience testing mechanisms to reciprocate up and down at different speeds through the reciprocating mechanism, and simultaneously tests the rebound effect of the soft bottom carpet under different hammering forces, thereby improving the efficiency of the test, increasing the diversity of the test, and thus improving the accuracy of the test results. Moreover, a single driving source driving motor is used to simultaneously drive the intermittent rotating mechanism and the reciprocating mechanism, so that the bearing mechanism and the resilience testing mechanism can cooperate more closely, thereby reducing the test cost.

[0017] 2. The present invention drives the switching component to rotate through a stepper motor, and can quickly switch the hammer components with different contact areas to move downward, thereby realizing hammer tests with different contact areas on soft bottom carpets. There is no need to replace the hammer parts, which reduces the time spent on replacing the hammer parts and improves the test efficiency.

[0018] 3. The present invention arranges a plurality of cranks with different rotational radii on the second rotating shaft. When the second rotating shaft rotates, the crank can pull a plurality of resilience testing mechanisms to move downward at different speeds through a connecting assembly, so that the plurality of resilience testing mechanisms can hammer onto the soft bottom carpet with different hammering forces, thereby facilitating simultaneous performance of a plurality of groups of resilience tests with different hammering forces on the soft bottom carpet, thereby further improving the efficiency of the test and the accuracy of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0020] Figure 2 This is the front view of the present invention.

[0021] Figure 3 This is the Figure 2 cross-sectional view taken along the A-A direction in the present invention.

[0022] Figure 4 This is the schematic perspective view of the intermittent rotation mechanism of the present invention.

[0023] Figure 5 This is the schematic perspective view of the resilience testing mechanism of the present invention.

[0024] Figure 6 This is the schematic perspective view of the reciprocating movement mechanism of the present invention.

[0025] In the figure: 1, support platform; 11, support frame; 111, chute; 2, bearing mechanism; 21, bearing turntable; 22, first rotating shaft; 23, ball; 3, intermittent rotation mechanism; 31, transmission rod; 32, dial; 33, grooved wheel; 4, resilience testing mechanism; 41, movable assembly; 411, slider; 412, housing; 42, hammering assembly; 421, movable rod; 422, top plate; 423, return spring; 424, hammering block; 425, inclined support plate; 43, switching assembly; 431, disc; 432, protruding block; 44, stepping motor; 5, reciprocating movement mechanism; 51, crankshaft assembly; 511, second rotating shaft; 512, crank; 513, balance weight; 52, connecting assembly; 521, connecting rod; 522, connecting seat; 6, drive motor. Detailed Embodiments

[0026] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the following will describe in detail the specific embodiments of the present invention with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described below, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0027] Please refer to Figure 1 , Figure 2 and Figure 3, A soft-bottom carpet resilience test device, comprising a support platform 1 and a support frame 11 installed on the top of the support platform 1. A number of evenly distributed bearing mechanisms 2 are rotatably installed on the top of the support platform 1. An intermittent rotation mechanism 3 for driving the bearing mechanisms 2 to rotate intermittently is installed inside the support platform 1. A resilience test mechanism 4 located above the bearing mechanisms 2 is provided on the front of the support frame 11. A reciprocating movement mechanism 5 for driving the resilience test mechanism 4 to move up and down is provided inside the support platform 1. A drive motor 6 for driving the intermittent rotation mechanism 3 and the reciprocating movement mechanism 5 to operate is also installed inside the support platform 1.

[0028] Please refer to Figure 1 , Figure 3 and Figure 5 , The resilience test mechanism 4 includes a movable component 41 slidably installed up and down on the front of the support frame 11. A number of hammering components 42 with different contact areas are evenly distributed circumferentially at the bottom of the movable component 41. A switching component 43 for pushing one of the hammering components 42 to move downward is rotatably installed inside the movable component 41. A stepping motor 44 for driving the switching component 43 to rotate is installed on the top of the movable component 41.

[0029] Please refer to Figure 3 and Figure 6 , The reciprocating movement mechanism 5 includes a crankshaft component 51 rotatably installed inside the support platform 1 and having different rotation radii. The crankshaft component 51 is connected to a number of movable components 41 through a rotatable connection component 52 and drives each movable component 41 to reciprocate up and down at different speeds.

[0030] Please refer to Figure 1 , Figure 3 and Figure 4 , The bearing mechanism 2 includes a bearing turntable 21 rotatably installed on the top of the support platform 1. A first rotating shaft 22 is coaxially and fixedly connected to the bottom of the bearing turntable 21. The first rotating shaft 22 is rotatably installed at the upper end of the support platform 1. A number of balls 23 are evenly distributed circumferentially at the bottom of the bearing turntable 21. The bottom surfaces of the balls 23 are in contact with the top surface of the support platform 1.

[0031] During the test, a sample of the soft-bottom carpet is placed in the bearing turntable 21. The soft-bottom carpet is driven to rotate intermittently by the bearing turntable 21, which can change the impact parts of the soft-bottom carpet and perform multi-part impact tests. By observing the rebound conditions of different parts of the soft-bottom carpet, the test accuracy can be improved. The balls 23 at the bottom of the bearing turntable 21 can play a role in rotational support, which is beneficial to the smooth and stable rotation of the bearing turntable 21.

[0032] Please refer to Figure 3 and Figure 4, the intermittent rotation mechanism 3 includes a number of drive rods 31 that are rotatably installed on the top wall of the inner cavity of the support table 1 and are evenly distributed at equal intervals. A dial 32 is coaxially and fixedly connected to the outside of the drive rod 31. The bottom end of the first rotating shaft 22 penetrates into the support table 1 and is fixedly connected with a grooved wheel 33. The grooved wheel 33 cooperates with the dial 32. The adjacent drive rods 31 are connected by belt drive, and the drive motor 6 is connected to the leftmost drive rod 31 through a bevel gear set.

[0033] The drive motor 6 drives the leftmost drive rod 31 to rotate. The adjacent drive rods 31 are mutually driven by a belt. Then, the drive rod 31 drives the dial 32 to rotate. The grooved wheel 33 and the first rotating shaft 22 are driven by the dial 32 to rotate intermittently, which facilitates driving multiple load-bearing turntables 21 to rotate intermittently at the same time.

[0034] Please refer to Figure 1 、 Figure 3 and Figure 5 , a number of chutes 111 that are evenly distributed at equal intervals are provided on the front surface of the support frame 11. The movable assembly 41 includes sliders 411 that are slidably installed up and down inside the corresponding chutes 111. A housing 412 is fixedly connected to the front surface of the slider 411. The housing 412 is located directly above the corresponding load-bearing turntable 21.

[0035] Please refer to Figure 1 、 Figure 3 and Figure 5 , the hammering assembly 42 includes a movable rod 421 that is slidably installed up and down at the bottom of the housing 412. A top plate 422 is fixedly connected to the top of the movable rod 421. A return spring 423 is fixedly connected between the bottom of the top plate 422 and the inner wall of the corresponding housing 412. The bottom of the movable rod 421 penetrates to the bottom of the housing 412 and is fixedly connected with a hammering block 424. The contact areas of the bottoms of the several hammering blocks 424 gradually decrease in the clockwise direction.

[0036] The return spring 423 gives an upward elastic force to the top plate 422. When not being pushed by the switching assembly 43, the return spring 423 can push the top plate 422 to move upward, which facilitates the rapid upward reset of the hammering block 424. By providing multiple hammering assemblies 42 with different contact areas, it is convenient to conduct multiple groups of impact tests with different contact areas, improving the diversity and accuracy of the test results of the resilience of the soft-bottom carpet.

[0037] Please refer to Figure 1 、 Figure 3 and Figure 5 , a number of diagonal support plates 425 are evenly distributed circumferentially on the side surface of the movable rod 421. The bottom of the diagonal support plate 425 is fixedly connected to the top of the hammering block 424.

[0038] By arranging the diagonal bracing plates 425 to support the edges of the hammering blocks 424 at equal intervals, the forces on all parts of the hammering blocks 424 can be made more uniform, which is beneficial to improving the uniformity of the impact of the hammering blocks 424, thereby improving the accuracy of the test.

[0039] Please refer to Figure 1 、 Figure 2 and Figure 6 , the heights of several sliders 411 gradually decrease at equal intervals from left to right.

[0040] Please refer to Figure 3 and Figure 5 , the switching component 43 includes a disc 431 rotatably installed inside the housing 412. The disc 431 is located above the top plate 422. A raised block 432 is fixedly connected to the bottom edge of the disc 431. The left and right sides of the raised block 432 are provided with inclined surfaces. The stepping motor 44 is fixedly installed on the top of the housing 412. The bottom of the output shaft of the stepping motor 44 is fixedly connected to the top of the disc 431.

[0041] By driving the disc 431 to rotate through the stepping motor 44, the raised block 432 at the bottom of the disc 431 can push the top plate 422 downward during the rotation process, facilitating the quick switching of different hammering components 42. When the raised block 432 stays above the required top plate 422, the required hammering block 424 can move downward, and the downward-moving hammering block 424 can impact the soft-bottom carpet for testing. The switching component 43 can quickly switch different hammering components 42 with different contact areas for impact testing, improving the test efficiency.

[0042] Please refer to Figure 3 and Figure 6 , the crankshaft assembly 51 includes a second rotating shaft 511 rotatably installed inside the support frame 11. A number of crank throws 512 are arranged on the second rotating shaft 511 at equal intervals and evenly distributed. The rotation radii of the several crank throws 512 gradually decrease at equal intervals from left to right. A number of balance blocks 513 are fixedly installed on the outer side of the second rotating shaft 511 at equal intervals. The driving motor 6 is connected to the second rotating shaft 511 through a belt; by arranging the balance blocks 513, the crankshaft assembly 51 can rotate more stably, improving the detection accuracy.

[0043] Please refer to Figure 3 and Figure 6 , the connecting assembly 52 includes a connecting rod 521 rotatably installed on the crank throw 512. The top of the connecting rod 521 is rotatably connected to a connecting seat 522. The connecting seat 522 is fixedly installed on the rear side of the corresponding slider 411. The lengths of the several connecting rods 521 are the same.

[0044] The driving motor 6 drives the second rotating shaft 511 to rotate. Then, the second rotating shaft 511 drives the crank 512 to rotate. The crank 512 pulls the slider 411 to move up and down reciprocally through the connecting rod 521, enabling the hammer block 424 to continuously impact-test the soft-bottom carpet. By setting crank 512s with different rotation radii, different angular velocities can be generated during rotation, thereby driving the slider 411 to move up and down at different speeds, enabling each hammer block 424 to impact-test the soft-bottom carpet with different impact forces, expanding the detection range, and better testing the resilience performance of the soft-bottom carpet.

[0045] During specific use: Step 1: Select multiple soft-bottom carpet samples to be tested, then place the samples into each bearing turntable 21 respectively, and then start the driving motor 6 to conduct the resilience test.

[0046] Step 2: The driving motor 6 drives the second rotating shaft 511 and the crank 512 to rotate. Then, the crank 512 drives the connecting seat 522 and the resilience test mechanism 4 to move up and down reciprocally through the connecting rod 521, causing the hammer block 424 to impact the soft-bottom carpet downward. When the hammer block 424 moves upward and leaves, the resilience performance of the soft-bottom carpet is judged by observing the speed and degree of the impacted part of the soft-bottom carpet returning to its original state. Different cranks 512 have different rotation radii, which can drive the resilience test mechanism 4 to fall at different speeds, facilitating simultaneous testing of multiple groups with different hammering forces.

[0047] Step 3: When the hammer block 424 moves upward, the driving motor 6 drives the grooved wheel 33 to rotate through the dial 32. Then, the grooved wheel 33 drives the first rotating shaft 22 and the bearing turntable 21 to rotate intermittently, which can adjust the impacted part of the soft-bottom carpet. Then, repeat Step 2 to conduct impact tests on different parts.

[0048] Step 4: When the resilience test mechanism 4 moves to a high position, the stepping motor 44 drives the disk 431 to rotate clockwise by a certain angle, causing the protruding block 432 to move to the next hammering assembly 42, making the next hammering assembly 42 protrude downward. At the same time, after the previous hammering assembly 42 loses the pressure of the protruding block 432, it automatically moves upward and resets under the elastic force of the return spring 423. Then, repeat Step 2 and Step 3 to conduct impact tests with different contact areas.

[0049] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "arranged", "connected", "installed", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, an integral connection, or a sliding connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0050] The embodiments of the specific implementation manners are all preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A soft-bottom carpet resilience testing device, comprising a support platform (1) and a support frame (11) mounted on the top of the support platform (1), characterized in that: A plurality of equally spaced bearing mechanisms (2) are rotatably mounted on the top of the support platform (1); an intermittent rotating mechanism (3) is mounted inside the support platform (1) for driving the bearing mechanism (2) to intermittently rotate; a rebound force testing mechanism (4) located above the bearing mechanism (2) is mounted on the front of the support frame (11); a reciprocating mechanism (5) is mounted inside the support platform (1) for driving the rebound force testing mechanism (4) to move up and down; and a driving motor (6) is also mounted inside the support platform (1) for driving the intermittent rotating mechanism (3) and the reciprocating mechanism (5) to operate; The resilience testing mechanism (4) comprises a movable component (41) slidably mounted on the front side of the support frame (11) up and down, a plurality of hammer components (42) with different contact areas are evenly distributed around the bottom of the movable component (41), a switching component (43) for driving one of the hammer components (42) to move downward is rotatably mounted inside the movable component (41), and a stepping motor (44) for driving the switching component (43) to rotate is mounted on the top of the movable component (41); The reciprocating mechanism (5) comprises a crankshaft assembly (51) rotatably mounted inside the support platform (1) and having a plurality of different rotational radii; the crankshaft assembly (51) is connected to a plurality of movable assemblies (41) via a rotatably connected connecting assembly (52) and drives each movable assembly (41) to reciprocate up and down at different speeds.

2. A soft-bottom carpet resilience testing device according to claim 1, characterized in that: The bearing mechanism (2) comprises a bearing turntable (21) rotatably mounted on the top of the support platform (1); the bottom of the bearing turntable (21) is coaxially fixedly connected with a first rotating shaft (22); the first rotating shaft (22) is rotatably mounted on the upper end of the support platform (1); and balls (23) are evenly distributed in the circumferential direction of the bottom of the bearing turntable (21); the bottom surface of the balls (23) is in contact with the top surface of the support platform (1).

3. A soft-bottom carpet resilience testing device according to claim 2, characterized in that: The intermittent rotation mechanism (3) comprises a plurality of transmission rods (31) rotatably mounted on the top wall of the inner cavity of the support platform (1) and evenly distributed at equal intervals. The outer portion of the transmission rod (31) is coaxially fixedly connected to a dial plate (32). The bottom end of the first rotating shaft (22) passes through the interior of the support platform (1) and is fixedly connected to a groove wheel (33). The groove wheel (33) cooperates with the dial plate (32). Adjacent transmission rods (31) are connected by belt transmission. The drive motor (6) is transmission-connected to the leftmost transmission rod (31) via a bevel gear set.

4. A soft-bottom carpet resilience testing device according to claim 2, characterized in that: The front of the support frame (11) is provided with a plurality of equally spaced and evenly distributed slide grooves (111); the movable component (41) comprises a slider (411) slidably mounted in the corresponding slide groove (111) up and down; the front of the slider (411) is fixedly connected to a housing (412); the housing (412) is located directly above the corresponding supporting turntable (21).

5. The soft-bottom carpet resilience testing device according to claim 4, characterized in that: The hammer assembly (42) comprises a movable rod (421) slidably mounted on the bottom of the shell (412) up and down, the top of the movable rod (421) is fixedly connected to a top plate (422), a return spring (423) is fixedly connected between the bottom of the top plate (422) and the inner wall of the corresponding shell (412), the bottom of the movable rod (421) penetrates through the bottom of the shell (412) and is fixedly connected to a hammer block (424), and the contact area of ​​the bottoms of the plurality of hammer blocks (424) gradually decreases in the clockwise direction.

6. A soft-bottom carpet resilience testing device according to claim 5, characterized in that: A plurality of diagonal support plates (425) are evenly distributed in the circumferential direction on the side surface of the movable rod (421), and the bottom of the diagonal support plate (425) is fixedly connected to the top of the hammer block (424).

7. The soft-bottom carpet resilience testing device according to claim 4, characterized in that: The heights of the plurality of sliding blocks (411) are gradually and evenly reduced from left to right.

8. The soft-bottom carpet resilience testing device according to claim 5, characterized in that: The switching assembly (43) comprises a disk (431) rotatably mounted inside the housing (412); the disk (431) is located above the top plate (422); a raised block (432) is fixedly connected to the edge of the bottom of the disk (431); inclined surfaces are provided on the left and right sides of the raised block (432); the stepping motor (44) is fixedly mounted on the top of the housing (412); and the bottom of the output shaft of the stepping motor (44) is fixedly connected to the top of the disk (431).

9. The soft-bottom carpet resilience testing device according to claim 4, characterized in that: The crankshaft assembly (51) comprises a second rotating shaft (511) rotatably mounted inside a support frame (11); a plurality of cranks (512) evenly distributed at equal intervals are arranged on the second rotating shaft (511); the rotation radius of the cranks (512) gradually decreases evenly from left to right; a plurality of balancing blocks (513) evenly distributed are fixedly mounted on the outer side of the second rotating shaft (511); and the driving motor (6) is connected to the second rotating shaft (511) through a belt.

10. The soft-bottom carpet resilience testing device according to claim 9, characterized in that: The connecting assembly (52) comprises a connecting rod (521) rotatably mounted on a crank (512), the top of the connecting rod (521) being rotatably connected to a connecting seat (522), and the connecting seat (522) being fixedly mounted on the rear side of a corresponding sliding block (411).

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