Soft bottom carpet resilience force testing device

Abstract

The invention relates to the field of soft bottom carpet testing, in particular to a soft bottom carpet resilience force testing device which comprises a supporting table and a supporting frame installed at the top of the supporting table. An intermittent rotating mechanism for driving the bearing mechanism to intermittently rotate is mounted in the supporting table, and a resilience force testing mechanism located above the bearing mechanism is arranged on the front face of the supporting frame. The driving motor drives the bearing mechanism to intermittently rotate through the intermittent rotating mechanism, the hammering and pressing position of the soft-bottom carpet can be continuously adjusted, different parts of the soft-bottom carpet can be tested multiple times, the testing precision is improved, and the testing efficiency is improved. Meanwhile, the driving motor drives the resilience force testing mechanisms to reciprocate up and down at different speeds through the reciprocating mechanism, the resilience effects of the soft-bottom carpet under different hammering forces are tested at the same time, the testing efficiency is improved, the testing diversity is improved, and then the accuracy of the testing result is improved.

Description

Technical Field

[0001] The invention relates to the technical field of soft-bottom carpet testing, in particular to a soft-bottom carpet resilience testing device. Background Art

[0002] Rubber-backed carpets are carpets made of natural rubber, synthetic rubber and other polymer materials. The resilience test of rubber-backed carpets is to evaluate the speed and degree of the carpet's recovery after being subjected to heavy pressure. This is one of the key factors in measuring the comfort, durability and use of carpets, and is crucial to ensuring product performance and user satisfaction.

[0003] At present, the resilience test of the rubber soft bottom carpet is usually carried out by selecting a rubber soft bottom carpet sample and placing it on the test platform. Then, the lifting mechanism drives the hammer to be suspended above the rubber soft bottom carpet, and then the hammer is dropped to perform an impact test on the rubber soft bottom carpet. By observing the speed and degree of the rubber soft bottom carpet recovering to its original state after being subjected to heavy pressure, the resilience performance of the rubber soft bottom carpet can be judged. However, the above-mentioned resilience test method of the soft bottom carpet still has the following shortcomings: 1. When the existing test device is testing, the soft bottom carpet is fixed on the test platform, and the hammer hits the same position of the soft bottom carpet. The test results are relatively simple. In order to improve the accuracy of the test, multiple groups of rebound force tests are carried out. The test time of multiple groups of tests using the same test device is long, which will affect the overall test efficiency. When multiple test devices are used for testing at the same time, each test device requires an independent power source to drive, and the test cost is high; 2. When the existing test device performs impact tests with different contact areas, different hammer parts need to be replaced, and the interval pause time between adjacent tests is long. Moreover, when multiple test devices need to be replaced, the entire interval pause time will be further increased, affecting the test efficiency. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a soft bottom carpet rebound force testing device, including a support platform and a support frame installed on the top of the support platform, the top of the support platform is rotatably installed with a plurality of equally distributed bearing mechanisms, the interior of the support platform is installed with an intermittent rotating mechanism for driving the bearing mechanism to intermittently rotate, the front of the support frame is provided with a rebound force testing mechanism located above the bearing mechanism, the interior of the support platform is provided with a reciprocating moving mechanism for driving the rebound force testing mechanism to move up and down, and the interior of the support platform is also installed with a driving motor for driving the intermittent rotating mechanism and the reciprocating moving mechanism to operate.

[0005] The rebound force testing mechanism includes a movable component that is slidably installed on the front side of the support frame, and a number of hammer components with different contact areas are evenly distributed circumferentially at the bottom of the movable component. A switching component that pushes one of the hammer components to move downward is rotatably installed inside the movable component, and a stepping motor that drives the switching component to rotate is installed on the top of the movable component.

[0006] The reciprocating mechanism includes a crankshaft assembly rotatably mounted inside the support platform and having a plurality of different rotational radii. The crankshaft assembly is connected to a plurality of movable assemblies via a rotatably connected connecting assembly and drives each movable assembly to reciprocate up and down at different speeds.

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

[0008] In one possible implementation, the intermittent rotation mechanism includes a plurality of transmission rods rotatably mounted on the top wall of the inner cavity of the support platform and evenly distributed at equal intervals, the outside of the transmission rods being coaxially fixedly connected with a dial plate, the bottom end of the first rotating shaft passes through the interior of the support platform and is fixedly connected with a groove wheel, the groove wheel cooperates with the dial plate, adjacent transmission rods are connected by belt drive, and the drive motor is connected to the transmission rod at the far left end through a bevel gear set.

[0009] In one possible implementation, a plurality of equally spaced and evenly distributed slide grooves are provided on the front of the support frame, and the movable component includes a slider installed in the corresponding slide groove for up and down sliding, and a shell is fixedly connected to the front of the slider, and the shell is located directly above the corresponding supporting turntable.

[0010] In one possible implementation, the hammer assembly includes a movable rod slidably installed on the bottom of the shell, the top of the movable rod is fixedly connected to a top plate, the bottom of the top plate is fixedly connected to the inner wall of the corresponding shell, the bottom of the movable rod passes through the bottom of the shell and is fixedly connected to a hammer block, and the contact area of ​​the bottom of several hammer blocks gradually decreases in the clockwise direction.

[0011] In a possible implementation, a plurality of diagonal support plates are evenly distributed circumferentially on the side surface of the movable rod, and the bottom of the diagonal support plate is fixedly connected to the top of the hammer block.

[0012] In a possible implementation, the heights of the plurality of sliding blocks decrease gradually and equidistantly 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 It is a front view of the present invention.

[0021] Figure 3 The present invention Figure 2 Sectional view along AA direction.

[0022] Figure 4 It is a three-dimensional structural schematic diagram of the intermittent rotating mechanism of the present invention.

[0023] Figure 5 It is a three-dimensional structural schematic diagram of the resilience testing mechanism of the present invention.

[0024] Figure 6 It is a three-dimensional structural schematic diagram of the reciprocating mechanism of the present invention.

[0025] In the figure: 1. support platform; 11. support frame; 111. slide groove; 2. bearing mechanism; 21. bearing turntable; 22. first rotating shaft; 23. ball bearing; 3. intermittent rotation mechanism; 31. transmission rod; 32. toggle plate; 33. groove wheel; 4. resilience test mechanism; 41. movable component; 411. slider; 412. shell; 42. hammer component; 421. movable rod; 422. top plate; 423. return spring; 424. hammer block; 425. diagonal support plate; 43. switching component; 431. disc; 432. protrusion block; 44. stepping motor; 5. reciprocating mechanism; 51. crankshaft assembly; 511. second rotating shaft; 512. crank; 513. balance block; 52. connecting component; 521. connecting rod; 522. connecting seat; 6. driving motor. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of 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 violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0027] See also Figure 1 , Figure 2 and Figure 3A soft bottom carpet resilience testing device comprises a support platform 1 and a support frame 11 installed on the top of the support platform 1, a plurality of equally distributed bearing mechanisms 2 are rotatably installed on the top of the support platform 1, an intermittent rotating mechanism 3 for driving the bearing mechanism 2 to intermittently rotate is installed inside the support platform 1, a resilience testing mechanism 4 located above the bearing mechanism 2 is arranged on the front of the support frame 11, a reciprocating moving mechanism 5 for driving the resilience testing mechanism 4 to move up and down is arranged inside the support platform 1, and a driving motor 6 for driving the intermittent rotating mechanism 3 and the reciprocating moving mechanism 5 to operate is also installed inside the support platform 1.

[0028] See also Figure 1 , Figure 3 and Figure 5 The resilience testing mechanism 4 includes a movable component 41 which is slidably installed on the front side of the support frame 11. 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 pushing one of the hammer 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] See also Figure 3 and Figure 6 The reciprocating mechanism 5 includes a crankshaft assembly 51 rotatably mounted inside the support platform 1 and having different rotational radii. The crankshaft assembly 51 is connected to a plurality of movable assemblies 41 through a rotatably connected connecting assembly 52 and drives each movable assembly 41 to reciprocate up and down at different speeds.

[0030] See also Figure 1 , Figure 3 and Figure 4 The bearing mechanism 2 includes a bearing turntable 21 rotatably mounted on the top of the support platform 1, and a first rotating shaft 22 is coaxially fixedly connected to the bottom of the bearing turntable 21. The first rotating shaft 22 is rotatably mounted on the upper end of the support platform 1. Balls 23 are evenly distributed circumferentially at the bottom of the bearing turntable 21, and the bottom surface of the ball 23 is in contact with the top surface of the support platform 1.

[0031] During the test, a sample of the soft-bottomed carpet is placed on the supporting turntable 21. The supporting turntable 21 drives the soft-bottomed carpet to rotate intermittently, so that the impacted part of the soft-bottomed carpet can be changed, and impact tests on multiple parts can be performed to observe the rebound of different parts of the soft-bottomed carpet, thereby improving the accuracy of the test. The ball 23 at the bottom of the supporting turntable 21 can play the role of rotation support, which is conducive to the stable and smooth rotation of the supporting turntable 21.

[0032] See also Figure 3 and Figure 4The intermittent rotation mechanism 3 includes 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 outside of the transmission rod 31 is coaxially fixedly connected with a toggle plate 32. The bottom end of the first rotating shaft 22 passes through the interior of the support platform 1 and is fixedly connected with a groove wheel 33. The groove wheel 33 cooperates with the toggle plate 32. Adjacent transmission rods 31 are connected by belt drive. The drive motor 6 is connected to the transmission rod 31 at the far left end through a bevel gear set.

[0033] The driving motor 6 drives the transmission rod 31 at the far left to rotate, and the adjacent transmission rods 31 are mutually transmitted through belts, and then the transmission rod 31 drives the dial 32 to rotate, and the dial 32 drives the groove wheel 33 and the first rotating shaft 22 to rotate intermittently, so as to facilitate driving multiple supporting turntables 21 to rotate intermittently at the same time.

[0034] See also Figure 1 , Figure 3 and Figure 5 A plurality of equally spaced and evenly distributed slide grooves 111 are provided on the front of the support frame 11. The movable component 41 includes a slider 411 which is installed in the corresponding slide groove 111 for sliding up and down. A shell 412 is fixedly connected to the front of the slider 411. The shell 412 is located directly above the corresponding supporting turntable 21.

[0035] See also Figure 1 , Figure 3 and Figure 5 The hammer assembly 42 includes a movable rod 421 slidably installed at the bottom of the shell 412, 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 bottom of the hammer blocks 424 gradually decreases in the clockwise direction.

[0036] The return spring 423 provides an upward elastic force to the top plate 422. When not pushed by the switching assembly 43, the return spring 423 can push the top plate 422 to move upward, so that the hammer block 424 can be quickly reset upward. By setting up multiple hammer assemblies 42 with different contact areas, it is convenient to carry out multiple groups of impact tests with different contact areas, thereby improving the diversity and accuracy of the resilience test results of the soft bottom carpet.

[0037] See also Figure 1 , Figure 3 and Figure 5 A plurality of diagonal support plates 425 are evenly distributed on the side of the movable rod 421 in the circumferential direction, and the bottom of the diagonal support plate 425 is fixedly connected to the top of the hammer block 424 .

[0038] By providing the diagonal support plates 425 to support the edges of the hammer block 424 at equal intervals, the forces on various parts of the hammer block 424 can be more evenly applied, which is beneficial to improving the uniformity of the impact of the hammer block 424 and further improving the accuracy of the test.

[0039] See also Figure 1 , Figure 2 and Figure 6 , the heights of the plurality of sliders 411 are gradually and evenly reduced from left to right.

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

[0041] The disc 431 is driven to rotate by the stepper motor 44. During the rotation of the disc 431, the raised block 432 at the bottom can push the top plate 422 to move downward, which is convenient for quickly switching different hammer assemblies 42. When the raised block 432 stays above the required top plate 422, the required hammer block 424 can move downward. The hammer block 424 moving downward can hit the soft bottom carpet for testing. The switching assembly 43 can quickly switch the hammer assemblies 42 with different contact areas for impact testing, thereby improving the test efficiency.

[0042] See also Figure 3 and Figure 6 The crankshaft assembly 51 includes a second rotating shaft 511 rotatably mounted inside the support frame 11, and a plurality of evenly distributed cranks 512 are arranged on the second rotating shaft 511, and the rotation radius of the cranks 512 gradually decreases evenly from left to right, and a plurality of evenly distributed balancing blocks 513 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; by setting the balancing block 513, the crankshaft assembly 51 can be made more stable when rotating, and the detection accuracy is improved.

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

[0044] The second rotating shaft 511 is driven to rotate by the driving motor 6, and then the second rotating shaft 511 drives the crank 512 to rotate. The crank 512 pulls the slider 411 to move up and down through the connecting rod 521, so that the hammer block 424 can continuously perform an impact test on the soft bottom carpet. By setting the crank 512 with different rotation radius, different angular velocities can be generated when it rotates, thereby driving the slider 411 to move up and down at different speeds, so that each hammer block 424 can perform an impact test on the soft bottom carpet with different impact forces, thereby increasing the detection range and better testing the resilience performance of the soft bottom carpet.

[0045] When used specifically, step 1: select a plurality of soft-bottom carpet samples to be tested, and then place the samples on respective carrying turntables 21 , and then start the drive motor 6 to start the resilience test.

[0046] Step 2: The second rotating shaft 511 and the crank 512 are driven to rotate by the driving motor 6, and then the crank 512 drives the connecting seat 522 and the resilience testing mechanism 4 to move up and down through the connecting rod 521, so that the hammer block 424 hits the soft bottom carpet downward. When the hammer block 424 moves upward, the resilience performance of the soft bottom carpet is judged by observing the speed and degree of recovery of the impacted part. Different cranks 512 have different rotation radii, which can drive the resilience testing mechanism 4 to fall at different speeds, so as to facilitate the simultaneous testing of multiple groups of different hammering forces.

[0047] Step 3: When the hammer block 424 moves upward, the driving motor 6 drives the groove wheel 33 to rotate through the dial 32, and then the groove wheel 33 drives the first rotating shaft 22 and the supporting rotating disk 21 to rotate intermittently, so as to adjust the impacted part of the soft bottom carpet, and then repeat step 2 to perform impact tests on different parts.

[0048] Step 4: When the rebound force testing mechanism 4 moves to a high position, the stepper motor 44 drives the disc 431 to rotate clockwise by a certain angle, so that the protrusion 432 moves to the next hammer assembly 42, so that the next hammer assembly 42 protrudes downward, and at the same time, after the previous hammer assembly 42 loses the pressure of the protrusion 432, it automatically moves upward and resets under the elastic force of the reset spring 423, and then repeats steps 2 and 3 to perform impact tests with different contact areas.

[0049] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" 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 a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be included in 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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