Trolley pressure performance test device and test method thereof

Abstract

The invention provides a handcart pressure performance test device and a test method thereof. The handcart pressure performance test device comprises a support column; and the control cabinet is fixedly mounted on one side of the supporting column. According to the handcart pressure performance test device and the test method thereof provided by the invention, through mutual cooperation of the supporting column, the control cabinet, the pressure regulating knob, the display screen, the driving telescopic piece, the test assembly, the blocking assembly and other structures, when the handcart pressure performance test device is used, scientific and quantitative test of the handcart grip pressure performance can be realized; compared with a traditional testing means which depends on artificial experience and lacks quantitative standards, the device can accurately measure and visually display specific data of the handle of the handcart in the pressure bearing process through the pressure sensor and the display screen, the performance of the handcart under different pressure conditions can be accurately evaluated, and potential quality hazards can be effectively found.

Description

Technical Field

[0001] The present invention relates to the technical field of trolley testing equipment, and in particular to a trolley pressure performance testing device and a testing method thereof. Background Art

[0002] As a widely used transport tool in supermarkets, warehouses and other places, trolleys play an important role in daily life and commercial activities. With the rapid development of modern logistics and retail industries, the frequency of use and load requirements of trolleys are constantly increasing. In order to ensure the safety and reliability of trolleys during long-term, high-intensity use, accurate testing of their pressure performance has become a key link in ensuring product quality.

[0003] In the current field of trolley manufacturing, although trolley production continues to grow, quality inspection and pressure performance testing of trolleys face many challenges. Traditional testing methods often rely on manual experience and lack scientific and quantitative standards. They cannot accurately evaluate the performance of trolleys under different pressure conditions. For example, some small manufacturers simply judge the quality of trolleys by observing whether they show obvious deformation or damage when carrying a certain weight of cargo. This method cannot obtain accurate data on the trolleys during the pressure process, making it difficult to identify potential quality problems. At the same time, existing testing equipment generally suffers from single functions and low automation levels. Some testing devices on the market can only simulate a single pressure environment and cannot meet the testing requirements of the complex stress conditions that trolleys may encounter in actual use. Moreover, the testing process requires a lot of manual operation, which is not only inefficient but also prone to deviations in test results due to human factors, making it difficult to ensure the accuracy and reliability of test data.

[0004] Therefore, it is necessary to provide a trolley pressure performance test device and a test method thereof to solve the above technical problems. Summary of the Invention

[0005] The present invention provides a trolley pressure performance testing device and a testing method thereof, which solve the problems that traditional trolley pressure performance testing means lack scientific quantitative standards, the testing equipment has a single function and a low degree of automation, and the test results are easily affected by human factors.

[0006] In order to solve the above technical problems, the present invention provides a trolley pressure performance test device, comprising: Support columns; A control cabinet, the control cabinet is fixedly mounted on one side of the support column, and a voltage regulating knob and a display screen are fixedly mounted on the inner side of the control cabinet; A driving telescopic member, wherein the driving telescopic member is arranged on the front side of the supporting column; A test assembly is provided on the front of the support column, and includes a mounting block, a mounting plate, a pressure sensor, a fixing plate, and a rubber pad. The mounting block is fixedly mounted on the movable end of the driving telescopic member, the mounting plate is fixedly mounted on the bottom of the mounting block, the pressure sensor is fixedly mounted on the bottom of the mounting plate, the fixing plate is fixedly mounted on the bottom of the pressure sensor, and the rubber pad is fixedly mounted on the bottom of the fixing plate. Two blocking components, both of which are arranged on the front side of the support column.

[0007] Preferably, a plurality of sliding rods are fixedly mounted on the top of the fixed plate, the outer sides of the plurality of sliding rods are sleeved with elastic members, the tops of the plurality of sliding rods are slidably connected to the inside of the mounting plate, and the elastic members are arranged at the bottom of the mounting plate.

[0008] Preferably, the blocking assembly includes a side plate, a rotating frame, a rotating groove, a rotating shaft and a blocking shaft, the rotating frame is rotatably connected to the side surface of the side plate, the rotating groove is opened on one side of the rotating frame, the rotating shaft is fixedly installed on the inner side surface of the rotating groove, and the blocking shaft is rotatably connected to the outer side surface of the rotating shaft.

[0009] Preferably, a first mounting bracket and a second mounting bracket are fixedly mounted on the front of the support column, the first mounting bracket is arranged on the top of the second mounting bracket, and a base plate is fixedly mounted on the bottom of the support column.

[0010] Preferably, a mounting frame is fixedly mounted on the front of the first mounting frame, the front of the mounting frame is fixedly mounted to the telescopic driving member, and both sides of the second mounting frame are fixedly mounted to the side panels.

[0011] Preferably, the display screen and the pressure sensor are electrically connected, and the pressure regulating knob and the driving telescopic member are connected via an air pipe.

[0012] Preferably, a limiting assembly is provided at the bottom of the front side of the support column, and the limiting assembly includes a connecting plate, a positioning frame, a sliding sleeve, a locking screw, a limiting plate and a limiting block. The positioning frames are fixedly installed on both sides of the base plate, and the connecting plate is fixedly installed in the middle of the two positioning frames. The sliding sleeves are slidably connected to the two ends of the outer side surface of the connecting plate, and the locking screw is threadedly connected to the inside of the top of the sliding sleeve. The limiting plate is fixedly installed on the front side of the sliding sleeve, and the limiting block is provided on the side of the limiting plate.

[0013] Preferably, a sliding groove is provided on the top of the limit plate, the inner side of the sliding groove is slidably connected to a slider, one side of the slider is fixedly installed with the limit block, the other side of the slider is fixedly installed with a threaded rod, and the outer side of the threaded rod is threadedly connected with a nut.

[0014] Preferably, the bottom of the locking screw abuts against the top of the connecting plate, and the side of the nut abuts against the side of the limiting plate.

[0015] To solve the above problems, the present invention also provides a test method for a trolley pressure performance test device, comprising the following steps: S1. Push the shopping cart to the front of the device so that the handle of the shopping cart abuts against the front of the blocking shaft; S2. Then, the driving telescopic member is started by controlling the pressure regulating knob. The pressure regulating knob is connected to the driving telescopic member through an air pipe. Turning the pressure regulating knob can accurately adjust the air pressure inside the driving telescopic member, thereby accurately controlling the extension and contraction degree of the driving telescopic member. The driving telescopic member drives the test component downward until the bottom of the rubber pad abuts against the top of the shopping cart handle. Then, the pressure is continued to be applied. The pressure sensor will monitor the pressure data in real time. The display screen is electrically connected to the pressure sensor, so the pressure data can be displayed on the display screen in real time, making it convenient for the operator to observe the intensity of the pressure on the handle until the required test pressure is reached; S3. After the test is completed, the pressure regulating knob is turned again to change the air pressure inside the driving telescopic member, causing the driving telescopic member to contract and drive the test assembly back to the initial position.

[0016] Compared with related technologies, the trolley pressure performance test device and test method provided by the present invention have the following beneficial effects: The present invention provides a trolley pressure performance test device and a test method thereof. Through the cooperation of structures such as a support column, a control cabinet, a pressure regulating knob, a display screen, a driving telescopic part, a test assembly and a blocking assembly, scientific quantitative testing of the pressure performance of the trolley handle can be achieved when in use. Compared with traditional testing methods that rely on manual experience and lack quantitative standards, the device can accurately measure and intuitively display specific data of the trolley handle during the pressure-bearing process through a pressure sensor and a display screen, which is convenient for accurately evaluating the performance of the trolley under different pressure conditions and effectively discovering potential quality risks. Moreover, the device has a high degree of automation. The extension and retraction of the driving telescopic part is controlled by the pressure regulating knob, which reduces a large amount of manual operation, reduces the influence of human factors on the test results, and ensures the accuracy and reliability of the test data. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic structural diagram of a first embodiment of a trolley pressure performance testing device provided by the present invention; Figure 2 for Figure 1 Another perspective structural diagram shown; Figure 3 for Figure 1 The schematic diagram of the test component structure shown; Figure 4 for Figure 1 The schematic diagram of the blocking component structure shown; Figure 5 for Figure 1 The schematic diagram of the control cabinet structure shown in FIG. Figure 6 A schematic structural diagram of a second embodiment of a trolley pressure performance testing device provided by the present invention; Figure 7 for Figure 6 The schematic diagram of the limit component structure shown; Figure 8 for Figure 7 An enlarged schematic diagram of part A is shown.

[0018] Numbers in the figure: 1. Support column, 11. Base plate, 12. First mounting bracket, 13. Mounting frame, 14. Second mounting bracket, 2. Control cabinet, 21. Voltage regulating knob, 3. Display screen, 4. Driving telescopic member, 5. Test assembly, 51. Mounting block, 52. Mounting plate, 53. Pressure sensor, 54. Fixing plate, 55. Rubber pad, 56. Slide rod, 57. Elastic member, 6. Blocking assembly, 61. Side plate, 62. Rotating bracket, 63. Rotating groove, 64. Rotating shaft, 65. Blocking shaft, 7. Limiting assembly, 71. Connecting plate, 72. Positioning bracket, 73. Slide sleeve, 74. Locking screw, 75. Limiting plate, 76. Limiting block, 77. Slide groove, 78. Slider, 79. Threaded rod, 70. Nut. DETAILED DESCRIPTION

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments. Example

[0020] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 ,in, Figure 1 A schematic structural diagram of a first embodiment of a trolley pressure performance testing device provided by the present invention; Figure 2 for Figure 1 Another perspective structural diagram shown; Figure 3 for Figure 1 The schematic diagram of the test component structure shown; Figure 4 for Figure 1 The schematic diagram of the blocking component structure shown; Figure 5 for Figure 1 The control cabinet structure diagram is shown. A trolley pressure performance test device includes: a support column 1; A control cabinet 2 is fixedly mounted on one side of the support column 1 , and a voltage regulating knob 21 and a display screen 3 are fixedly mounted on the inner side of the control cabinet 2 ; A driving telescopic member 4, wherein the driving telescopic member 4 is arranged on the front side of the support column 1; A test assembly 5 is provided on the front face of the support column 1 and includes a mounting block 51, a mounting plate 52, a pressure sensor 53, a fixing plate 54, and a rubber pad 55. The mounting block 51 is fixedly mounted on the moving end of the driving telescopic member 4, the mounting plate 52 is fixedly mounted on the bottom of the mounting block 51, the pressure sensor 53 is fixedly mounted on the bottom of the mounting plate 52, the fixing plate 54 is fixedly mounted on the bottom of the pressure sensor 53, and the rubber pad 55 is fixedly mounted on the bottom of the fixing plate 54; Two blocking components 6 , both of which are arranged on the front side of the support column 1 .

[0021] A plurality of slide rods 56 are fixedly mounted on the top of the fixed plate 54 , and the outer sides of the plurality of slide rods 56 are sleeved with elastic members 57 . The tops of the plurality of slide rods 56 are slidably connected to the inside of the mounting plate 52 , and the elastic members 57 are arranged at the bottom of the mounting plate 52 .

[0022] The blocking assembly 6 includes a side plate 61, a rotating frame 62, a rotating groove 63, a rotating shaft 64 and a blocking shaft 65. The rotating frame 62 is rotatably connected to the side of the side plate 61, the rotating groove 63 is opened on one side of the rotating frame 62, the rotating shaft 64 is fixedly installed on the inner side of the rotating groove 63, and the blocking shaft 65 is rotatably connected to the outer side of the rotating shaft 64.

[0023] A first mounting bracket 12 and a second mounting bracket 14 are fixedly mounted on the front of the support column 1 . The first mounting bracket 12 is disposed on top of the second mounting bracket 14 . A base plate 11 is fixedly mounted on the bottom of the support column 1 .

[0024] The front of the first mounting frame 12 is fixedly mounted with a mounting frame 13 , the front of the mounting frame 13 is fixedly mounted to the telescopic driving member 4 , and both sides of the second mounting frame 14 are fixedly mounted to the side panels 61 .

[0025] The display screen 3 is electrically connected to the pressure sensor 53 , and the pressure regulating knob 21 is connected to the driving telescopic member 4 via an air pipe.

[0026] The control cabinet 2 is not only equipped with a pressure regulating knob 21 and a display screen 3, but also integrates complex control circuits and signal transmission lines. The pressure regulating knob 21 uses a high-precision pressure regulating element, which can achieve precise adjustment of the internal air pressure of the driving telescopic member 4, ensuring that the extension and contraction degree of the driving telescopic member 4 can meet the high-precision requirements of different testing needs; the display screen 3 is a high-definition liquid crystal display with good viewing angle and brightness adjustment function. Whether in a bright light environment or a dim working area, the operator can clearly observe the pressure data collected by the pressure sensor 53; The telescopic member 4 can be driven by a cylinder as a power source. The cylinder has the characteristics of fast response speed and stable output force. Its working principle is to adjust the air pressure entering the cylinder through the pressure regulating knob 21, thereby controlling the telescopic length of the cylinder piston rod. The mounting plate 52 is fixed to the bottom of the mounting block 51, providing a stable mounting platform for the pressure sensor 53. The flatness and rigidity of the mounting plate 52 have an important influence on the measurement accuracy of the pressure sensor 53. The pressure sensor 53 adopts a high-precision strain gauge sensor with the characteristics of high sensitivity and good linearity, and can accurately measure the pressure borne by the trolley handle; the rubber pad 55 is made of a rubber material with high elasticity and wear resistance. Its surface texture design can further increase the friction between it and the trolley handle, ensuring that during the test, there will be no relative sliding between the test component 5 and the handle. At the same time, the soft properties of the rubber material can effectively protect the handle surface to prevent scratches or damage during the test.

[0027] The working principle of the trolley pressure performance test device provided by the present invention is as follows: When in use, push the shopping cart to the front of the device so that the handle of the shopping cart is in contact with the front of the blocking shaft 65, and then start the driving telescopic member 4 by controlling the pressure regulating knob 21. The pressure regulating knob 21 is connected to the driving telescopic member 4 through an air pipe. Turning the pressure regulating knob 21 can accurately adjust the air pressure inside the driving telescopic member 4, thereby accurately controlling the degree of extension and contraction of the driving telescopic member 4. The driving telescopic member 4 drives the test assembly 5 to move downward. Since the mounting block 51 is fixedly mounted on the moving end of the driving telescopic member 4 and the mounting plate 52 is fixed to the bottom of the mounting block 51, the test assembly 5 can stably move with the driving telescopic member 4 until the bottom of the rubber pad 55 is The rubber pad 55 abuts against the top of the shopping cart handle, and the presence of the rubber pad 55 increases the friction between the rubber pad 55 and the shopping cart handle to prevent sliding during the test and avoid damage to the surface of the handle. Then, the pressure is continued to be applied, and the pressure sensor 53 monitors the pressure data in real time. The display screen 3 and the pressure sensor 53 are electrically connected, so the pressure data can be displayed on the display screen 3 in real time, which is convenient for the operator to observe the intensity of the pressure on the handle until the pressure required for testing is reached. After the test is completed, the pressure regulating knob 21 is turned again to change the air pressure inside the telescopic drive member 4, so that the telescopic drive member 4 is contracted, and the test component 5 is driven back to the initial position.

[0028] Compared with related technologies, the trolley pressure performance test device provided by the present invention has the following beneficial effects: Through the cooperation of structures such as the support column 1, the control cabinet 2, the pressure regulating knob 21, the display screen 3, the drive telescopic member 4, the test component 5 and the blocking component 6, when in use, a scientific quantitative test of the pressure performance of the trolley handle can be achieved. Compared with traditional testing methods that rely on manual experience and lack quantitative standards, the device can accurately measure and intuitively display the specific data of the trolley handle during the pressure process through the pressure sensor 53 and the display screen 3, which is convenient for accurately evaluating the performance of the trolley under different pressure conditions and effectively discovering potential quality risks; moreover, the device has a high degree of automation. The expansion and contraction of the drive telescopic member 4 is controlled by the pressure regulating knob 21, which reduces a large amount of manual operation, reduces the influence of human factors on the test results, and ensures the accuracy and reliability of the test data. Example

[0029] Please refer to Figure 6 、 Figure 7 and Figure 8 Based on the first embodiment of this application, which provides a trolley pressure performance test device, the second embodiment of this application provides another trolley pressure performance test device. The second embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0030] Specifically, the difference of the trolley pressure performance testing device provided in the second embodiment of the present application is that, in a trolley pressure performance testing device, a limiting assembly 7 is provided at the bottom of the front of the support column 1, and the limiting assembly 7 includes a connecting plate 71, a positioning frame 72, a sliding sleeve 73, a locking screw 74, a limiting plate 75 and a limiting block 76. The positioning frames 72 are respectively fixedly installed on both sides of the base plate 11, and the connecting plate 71 is fixedly installed in the middle of the two positioning frames 72. The sliding sleeves 73 are respectively slidably connected to the two ends of the outer side surface of the connecting plate 71, and the locking screw 74 is threadedly connected to the inside of the top of the sliding sleeve 73. The limiting plate 75 is fixedly installed on the front of the sliding sleeve 73, and the limiting block 76 is arranged on the side of the limiting plate 75.

[0031] A sliding groove 77 is provided on the upper surface of the limiting plate 75, and a slider 78 is slidably connected to the inner side of the sliding groove 77. One side of the slider 78 is fixedly installed with the limiting block 76, and a threaded rod 79 is fixedly installed on the other side of the slider 78. The outer side of the threaded rod 79 is threadedly connected to the nut 70.

[0032] The bottom of the locking screw 74 abuts against the top of the connecting plate 71 , and the side surface of the nut 70 abuts against the side surface of the limiting plate 75 .

[0033] The working principle of the trolley pressure performance test device provided by the present invention is as follows: When in use, the trolley is moved to the middle of the two limit plates 75, the positioning frames 72 are fixedly installed on both sides of the bottom plate 11, the connecting plate 71 connects the two positioning frames 72, and the sliding sleeve 73 slides on the outer side of the connecting plate 71. This structure allows the position of the limit plate 75 to be flexibly adjusted according to the width of the trolley. After adjusting the position, tighten the locking screw 74, the bottom of which abuts the top of the connecting plate 71, thereby fixing the position of the sliding sleeve 73, and also determining the position of the limit plate 75. At this time, the limit plate 75 can prevent the trolley from moving left and right; At the same time, the slider 78 is slidably connected in the sliding groove 77 opened on the limit plate 75. One side of the slider 78 is connected to the limit block 76 and the other side is connected to the threaded rod 79. By turning the nut 70, the position of the slider 78 in the sliding groove 77 is changed, and then the position of the limit block 76 is adjusted. Due to the obstruction of the limit block 76 and the connecting plate 71, the trolley can be prevented from moving vertically. During the entire test process, the trolley is stably confined in the test area to ensure that the trolley will not be displaced during the test, thereby ensuring the accuracy of the test data.

[0034] Compared with related technologies, the trolley pressure performance test device provided by the present invention has the following beneficial effects: By setting the limit assembly 7, when in use, the positions of the limit plate 75 and the limit block 76 can be flexibly adjusted according to the different sizes of the trolleys, which plays a stable limiting role for the trolley and effectively avoids the left and right and vertical movement of the trolley during the test process, ensuring that the trolley is always in a stable test state, thereby improving the accuracy of the test data.

[0035] To solve the above problems, the present invention also provides a test method for a trolley pressure performance test device, comprising the following steps: S1. Push the shopping cart to the front of the device so that the handle of the shopping cart abuts against the front of the blocking shaft 65; S2. Then, the driving telescopic member 4 is started by controlling the pressure regulating knob 21. The pressure regulating knob 21 is connected to the driving telescopic member 4 through an air pipe. Turning the pressure regulating knob 21 can accurately adjust the air pressure inside the driving telescopic member 4, thereby accurately controlling the extension and contraction degree of the driving telescopic member 4. The driving telescopic member 4 drives the test assembly 5 to move downward until the bottom of the rubber pad 55 abuts against the top of the shopping cart handle. Then, the pressure is continued to be applied. The pressure sensor 53 monitors the pressure data in real time. The display screen 3 is electrically connected to the pressure sensor 53, so that the pressure data can be displayed on the display screen 3 in real time, making it convenient for the operator to observe the intensity of the pressure on the handle until the pressure required for testing is reached. S3. After the test is completed, the pressure regulating knob 21 is rotated again to change the air pressure inside the driving telescopic member 4, causing the driving telescopic member 4 to contract and drive the testing assembly 5 back to the initial position.

[0036] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A trolley pressure performance test device, characterized in that: include: Support columns; A control cabinet, the control cabinet is fixedly mounted on one side of the support column, and a voltage regulating knob and a display screen are fixedly mounted on the inner side of the control cabinet; A driving telescopic member, wherein the driving telescopic member is arranged on the front side of the supporting column; A test assembly is provided on the front of the support column, and includes a mounting block, a mounting plate, a pressure sensor, a fixing plate, and a rubber pad. The mounting block is fixedly mounted on the movable end of the driving telescopic member, the mounting plate is fixedly mounted on the bottom of the mounting block, the pressure sensor is fixedly mounted on the bottom of the mounting plate, the fixing plate is fixedly mounted on the bottom of the pressure sensor, and the rubber pad is fixedly mounted on the bottom of the fixing plate. Two blocking components, both of which are arranged on the front side of the support column.

2. A trolley pressure performance test device according to claim 1, characterized in that: A plurality of slide bars are fixedly mounted on the top of the fixed plate, the outer sides of the plurality of slide bars are sleeved with elastic members, the tops of the plurality of slide bars are slidably connected to the inside of the mounting plate, and the elastic members are arranged at the bottom of the mounting plate.

3. A trolley pressure performance testing device according to claim 1, characterized in that: The blocking assembly includes a side plate, a rotating frame, a rotating groove, a rotating shaft and a blocking shaft. The rotating frame is rotatably connected to the side surface of the side plate, the rotating groove is opened on one side of the rotating frame, the rotating shaft is fixedly installed on the inner side surface of the rotating groove, and the blocking shaft is rotatably connected to the outer side surface of the rotating shaft.

4. A trolley pressure performance test device according to claim 3, characterized in that: A first mounting bracket and a second mounting bracket are fixedly mounted on the front of the support column, the first mounting bracket is arranged on the top of the second mounting bracket, and a base plate is fixedly mounted on the bottom of the support column.

5. A trolley pressure performance test device according to claim 4, characterized in that: A mounting frame is fixedly mounted on the front of the first mounting frame, the front of the mounting frame is fixedly mounted to the driving telescopic member, and both sides of the second mounting frame are fixedly mounted to the side plates.

6. A trolley pressure performance testing device according to claim 1, characterized in that: The display screen is electrically connected to the pressure sensor, and the pressure regulating knob is connected to the driving telescopic member via an air pipe.

7. A trolley pressure performance test device according to claim 4, characterized in that: A limiting assembly is provided at the bottom of the front side of the support column, and the limiting assembly includes a connecting plate, a positioning frame, a sliding sleeve, a locking screw, a limiting plate and a limiting block. The positioning frames are fixedly installed on both sides of the base plate, and the connecting plate is fixedly installed in the middle of the two positioning frames. The sliding sleeves are slidably connected to the two ends of the outer side surface of the connecting plate, and the locking screw is threadedly connected to the inside of the top of the sliding sleeve. The limiting plate is fixedly installed on the front side of the sliding sleeve, and the limiting block is provided on the side of the limiting plate.

8. A trolley pressure performance test device according to claim 7, characterized in that: A sliding groove is provided on the upper surface of the limit plate, and a slider is slidably connected to the inner side of the sliding groove. One side of the slider is fixedly installed with the limit block, and a threaded rod is fixedly installed on the other side of the slider. The outer side of the threaded rod is threadedly connected with a nut.

9. A trolley pressure performance test device according to claim 8, characterized in that: The bottom of the locking screw abuts against the top of the connecting plate, and the side surface of the nut abuts against the side surface of the limiting plate.

10. A test method for a trolley pressure performance test device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Push the shopping cart to the front of the device so that the handle of the shopping cart abuts against the front of the blocking shaft; S2. Then, the driving telescopic member is started by controlling the pressure regulating knob. The pressure regulating knob is connected to the driving telescopic member through an air pipe. Turning the pressure regulating knob can accurately adjust the air pressure inside the driving telescopic member, thereby accurately controlling the extension and contraction degree of the driving telescopic member. The driving telescopic member drives the test component downward until the bottom of the rubber pad abuts against the top of the shopping cart handle. Then, the pressure is continued to be applied. The pressure sensor will monitor the pressure data in real time. The display screen is electrically connected to the pressure sensor, so the pressure data can be displayed on the display screen in real time, making it convenient for the operator to observe the intensity of the pressure on the handle until the required test pressure is reached; S3. After the test is completed, the pressure regulating knob is turned again to change the air pressure inside the driving telescopic member, causing the driving telescopic member to contract and drive the test assembly back to the initial position.

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