Strength testing device for mechanical part of lifting arm of automobile lifting machine

Abstract

The invention provides an automobile lifting machine lifting arm mechanical part strength testing device, and relates to the technical field of lifting machine detection, the automobile lifting machine lifting arm mechanical part strength testing device comprises a fixed support and a lifting machine body, two sides of the fixed support are provided with guide vertical grooves and a plurality of uniformly distributed positioning holes; a fixed sliding plate is mounted in the guide vertical groove in a sliding manner; a fixed supporting plate is mounted on the inner side of the side end of the fixed sliding plate; the fixed supporting plate is installed at the bottom of the lifting arm body, and a rotating plate is rotationally installed on the side face of the fixed supporting plate. And an infrared horizontal measuring probe is mounted on the rotating plate. The fixed supporting plate is placed at the bottom position where the lifting arm body and the lifting machine body are connected, mechanical fixing of the lifting arm body through the fixed supporting plate is achieved, the risk of self-falling is greatly reduced, reliable safety guarantee is provided for detection personnel and equipment, the phenomenon of accidental self-falling of the lifting arm in the detection process is avoided, and the detection efficiency is improved. And the accuracy of the strength detection result of the lifting arm is influenced.

Description

Technical Field

[0001] The present invention relates to the technical field of lift detection, and particularly to a strength test device for mechanical components of a lifting arm of an automotive lift. Background Art

[0002] In the maintenance operation of new energy vehicles, a lift is an indispensable and important device. As a key structure in the lift that directly bears the lifting of new energy vehicles, the strength of the mechanical components of the lifting arm is directly related to the stability of the lifting process. To ensure that the lift can always maintain a stable and safe working state during long-term use, it is particularly necessary to use a strength test device to detect the strength of the lifting arm components, effectively verify the load-bearing capacity of the lifting arm, and thus provide a solid and reliable guarantee for the maintenance work of new energy vehicles.

[0003] In the prior art, when a strength test device detects the lifting arm of a lift, the lifting and lowering operation of the lifting arm components depends on the hydraulic system of the lift for control. During the detection, the strength test device needs to apply a significant pressure load to the lifting arm, and there may be a failure of the hydraulic system that controls the lifting arm, or the locking mechanism of the lift may be worn and loosened due to long-term use. In this case, it is possible that the lifting arm may accidentally fall during the detection process, thereby affecting the accuracy of the strength detection result of the lifting arm. Summary of the Invention

[0004] The present invention relates to a strength test device for mechanical components of a lifting arm of an automotive lift, which solves the problem that during the detection, the strength test device needs to apply a significant pressure load to the lifting arm, and there may be a failure of the hydraulic system that controls the lifting arm, or the locking mechanism of the lift may be worn and loosened due to long-term use. In this case, it is possible that the lifting arm may accidentally fall during the detection process, thereby affecting the accuracy of the strength detection result of the lifting arm.

[0005] The present invention provides a strength test device for mechanical components of a lifting arm of an automotive lift, which specifically includes: a fixed bracket and a lift body. A stabilizing plate is installed at the bottom of the fixed bracket, and installation side grooves are provided at the top and bottom of both sides of the fixed bracket, and the fixed bracket is installed outside the lift body; a lifting arm body is installed on the lift body; guide vertical grooves and a plurality of uniformly distributed positioning holes are provided on both sides of the fixed bracket; a fixed sliding plate is slidably installed inside the guide vertical groove; a slot is provided on the side surface of the fixed sliding plate, and two positioning rods are slidably installed in the slot on the side surface of the fixed sliding plate; the positioning rods are slidably installed inside the positioning holes, and connecting plates are installed at the outer ends of the two positioning rods; a fixed support plate is installed inside the side end of the fixed sliding plate; the fixed support plate is installed at the bottom of the lifting arm body, and a rotating plate is rotatably installed on the side surface of the fixed support plate; an infrared horizontal measurement probe is installed on the rotating plate.

[0006] Further, positioning plates are installed at both the inner top and bottom of the fixed bracket; a fixing plate is slidably installed inside the installation side groove; the fixing plate is of a U-shaped structure, and both ends of the fixing plate are provided with slotted openings, the opening positions of the two slotted openings are in opposite directions, and the fixing plate is slidably installed outside the lifting machine body.

[0007] Further, a driving screw is rotatably installed on the side of the positioning plate; a rotating member is installed on the driving screw; a fixed clamping plate is rotatably installed outside the rotating member; both ends of the fixed clamping plate are slidably installed in the slotted openings at both ends of the fixing plate.

[0008] Further, a positioning support plate is installed on the top of the fixed bracket; a driving cylinder is installed at the side end of the positioning support plate, and a traction support plate is installed on the side of the positioning support plate; the side of the traction support plate is connected to the side end of the stabilizing plate; two guiding rods are installed at the bottom of the positioning support plate.

[0009] Further, a guiding block is slidably installed outside the guiding rod; the side of the guiding block is connected to the output end of the driving cylinder at the side end of the positioning support plate; a guiding cover is installed at the bottom of the guiding block.

[0010] Further, a driving cylinder is installed at the side end of the guiding cover, and a guiding plate is slidably installed inside the guiding cover; the guiding plate is of a circular structure, the side of the guiding plate is connected to the output end of the driving cylinder at the side end of the guiding cover, and a fixing rib is rotatably installed at the bottom of the guiding plate.

[0011] Further, an upper support plate is installed at the bottom of the fixing rib; two upper adjusting rods are rotatably installed inside the bottom of the upper support plate; threads are provided on the two upper adjusting rods, the threads on the two upper adjusting rods are staggered, and two upper adjusting blocks are installed on the upper adjusting rods.

[0012] Further, a driving cylinder is installed at the bottom of the upper adjusting block, one upper adjusting block is installed on the thread of one upper adjusting rod, one upper adjusting block is slidably installed on the other upper adjusting rod, the other upper adjusting block is slidably installed on one upper adjusting rod, and the other upper adjusting block is installed on the thread of the other upper adjusting rod.

[0013] Further, a pressure sensor is installed at the output end of the driving cylinder at the bottom of the upper adjusting block, the bottom of the pressure sensor is connected to a lower adjusting block; a lower support plate is installed at the side end of the lifting arm body; two lower adjusting rods are rotatably installed inside the top of the lower support plate, and threads are provided on both of the two lower adjusting rods.

[0014] Further, one of the lower adjusting blocks is installed on the thread of one of the lower adjusting rods, and one of the lower adjusting blocks is slidably installed on the other lower adjusting rod, and the other lower adjusting block is slidably installed on one of the lower adjusting rods, and the other lower adjusting block is installed on the thread of the other lower adjusting rod; two rotating screws are installed on the lower support plate; a fixed cover is installed on the outer side of the rotating screw; the fixed cover is installed at the bottom of the side end of the lifting arm body.

[0015] The present invention provides a strength testing device for a lifting arm mechanical component of an automotive lift, which has the following beneficial effects: When the present invention is in use, before the strength detection of the lifting arm component of the lift, by placing the fixed support plate at the bottom position where the lifting arm body is connected to the lift body, the mechanical fixation of the lifting arm body by the fixed support plate is realized, and further stable support is formed for the bottom of the lifting arm body, greatly reducing the risk of the lifting arm body falling by itself during the detection due to factors such as hydraulic failure, wear and looseness of the locking mechanism, etc., providing reliable safety protection for the detection personnel and equipment, avoiding personal injuries and equipment damage caused by accidental self-falling, and ensuring the accuracy of the strength detection result of the lifting arm.

[0016] In addition, by respectively rotating the upper adjusting rod and the lower adjusting rod, and using the thread to drive the upper adjusting block and the lower adjusting block to slide, the distance between the two upper adjusting blocks and the two lower adjusting blocks can be flexibly adjusted, and the distances of the two lower adjusting blocks from the position of fixing the lifting arm body are different, so that when the driving cylinder applies pressure for testing, the strength detection situations of the lifting arm body under balanced pressure and unbalanced pressure can be simulated. By changing the positions of the upper adjusting block and the lower adjusting block, the strength test under different pressures can be realized, greatly broadening the test range, and being able to comprehensively evaluate the strength performance of the lifting arm under different stress states, providing rich data support for the quality control of the lifting arm.

[0017] In addition, during the detection process, combining the pressure value detected by the pressure sensor and the bending condition of the lifting arm body monitored by the infrared horizontal measurement probe on the rotating plate, the strength of the lifting arm of the lift is comprehensively judged from two key dimensions of pressure and deformation. The two cooperate with each other, making the test result more accurate and reliable, and being able to more comprehensively and truly reflect the strength condition of the lifting arm in actual use. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly introduced below.

[0019] The following drawings in the description only relate to some embodiments of the present invention and do not limit the present invention.

[0020] In the drawings: Figure 1Schematic diagram showing the overall structure of the present invention; Figure 2 Schematic diagram showing the three-dimensional structure of the bottom of the fixing bracket of the present invention; Figure 3 Schematic diagram showing the three-dimensional structure of the fixing plate of the present invention; Figure 4 Schematic diagram showing the three-dimensional structure of the bottom of the positioning support plate of the present invention; Figure 5 Schematic diagram showing the three-dimensional structure of the upper support plate of the present invention; Figure 6 Schematic diagram showing the sectional structure of the guiding cover of the present invention; Figure 7 Schematic diagram showing the sectional structure of the lower support plate of the present invention; Figure 8 Schematic diagram showing the three-dimensional structure of the fixing sliding plate of the present invention; Figure 9 Schematic diagram showing the three-dimensional structure of the rotating plate of the present invention.

[0021] List of reference numerals 1, fixing bracket; 101, stabilizing plate; 102, mounting side groove; 103, positioning plate; 104, fixing plate; 105, driving screw; 106, rotating member; 107, fixing clamping plate; 2, positioning support plate; 201, traction support plate; 202, guiding rod; 203, guiding block; 204, guiding cover; 205, guiding plate; 206, fixing rib; 207, upper support plate; 208, upper adjusting rod; 209, upper adjusting block; 2010, lower adjusting block; 2011, lower adjusting rod; 2012, lower support plate; 2013, rotating screw; 2014, fixing cover; 3, guiding vertical groove; 301, positioning hole; 302, fixing sliding plate; 303, positioning rod; 304, connecting plate; 305, fixing support plate; 306, rotating plate; 4, lift body; 401, lift arm body. Detailed implementation manners

[0022] For the purpose of making the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0023] Please refer to Figures 1 to 9 : Embodiment 1: The present invention proposes a strength testing device for the lifting arm mechanical components of an automotive lift, including: a fixed bracket 1 and a lift body 4. A stabilizing plate 101 is installed at the bottom of the fixed bracket 1, and mounting side grooves 102 are provided at the top and bottom on both sides of the fixed bracket 1. The fixed bracket 1 is installed outside the lift body 4. A lifting arm body 401 is installed on the lift body 4. Positioning plates 103 are installed at the top and bottom inside the fixed bracket 1. A fixing plate 104 is slidably installed inside the mounting side groove 102. The fixing plate 104 is of a U-shaped structure, and both ends of the fixing plate 104 are provided with slots. The opening positions of the two slots are in opposite directions, and the fixing plate 104 is slidably installed outside the lift body 4. A driving screw 105 is rotatably installed on the side of the positioning plate 103. A rotating member 106 is installed on the driving screw 105. A fixed clamping plate 107 is rotatably installed outside the rotating member 106. Both ends of the fixed clamping plate 107 are slidably installed in the slots at both ends of the fixing plate 104.

[0024] In the embodiment of the present invention, when performing strength detection on the lifting arm components of the lift, the fixed bracket 1 and the stabilizing plate 101 are placed outside the lift body 4. The fixing plate 104 is slidably installed outside the lift body 4. Both ends of the fixing plate 104 penetrate through the mounting side groove 102 and are located outside the fixed bracket 1. The fixed clamping plate 107 is rotated outside the rotating member 106. Both ends of the fixed clamping plate 107 are respectively rotatably installed in the slots at the upper and lower staggered positions at both ends of the fixing plate 104. The driving screw 105 is rotated at the side end of the positioning plate 103 to drive the rotating member 106 to move outward. The rotating member 106 drives the fixed clamping plate 107 to pull the fixing plate 104 to move outward, so that the fixing plate 104 is fixed outside the lift body 4. The upper and lower fixing plates 104 are fixed outside the fixed bracket 1, ensuring the stability of the installation position of the detection device and ensuring that the detection is carried out at the same horizontal position as the lift body 4.

[0025] Embodiment 2. On the basis of Embodiment 1, a positioning support plate 2 is installed on the top of the fixed support 1; a driving cylinder is installed at the side end of the positioning support plate 2, and a traction support plate 201 is installed on the side of the positioning support plate 2; the side of the traction support plate 201 is connected to the side end of the stabilizing plate 101; two guide rods 202 are installed at the bottom of the positioning support plate 2; a guide block 203 is slidably installed on the outer side of the guide rod 202; the side of the guide block 203 is connected to the output end of the driving cylinder at the side end of the positioning support plate 2; a guide cover 204 is installed at the bottom of the guide block 203; a driving cylinder is installed at the side end of the guide cover 204, and a guide plate 205 is slidably installed inside the guide cover 204; the guide plate 205 is of a circular structure, and the side of the guide plate 205 is connected to the output end of the driving cylinder at the side end of the guide cover 204, and a fixing rib 206 is rotatably installed at the bottom of the guide plate 205; an upper support plate 207 is installed at the bottom of the fixing rib 206; two upper adjusting rods 208 are rotatably installed at the inner side of the bottom of the upper support plate 207; the upper adjusting rods 208 are provided with threads, and the threads on the two upper adjusting rods 208 are distributed in a staggered manner, and two upper adjusting blocks 209 are installed on the upper adjusting rods 208; a driving cylinder is installed at the bottom of the upper adjusting block 209, one upper adjusting block 209 is installed on the thread of one upper adjusting rod 208, one upper adjusting block 209 is slidably installed on the other upper adjusting rod 208, the other upper adjusting block 209 is slidably installed on one upper adjusting rod 208, and the other upper adjusting block 209 is installed on the thread of the other upper adjusting rod 208; a pressure sensor is installed on the output end of the driving cylinder at the bottom of the upper adjusting block 209, and the bottom of the pressure sensor is connected to a lower adjusting block 2010; a lower support plate 2012 is installed on the side end of the lifting arm body 401; two lower adjusting rods 2011 are rotatably installed at the inner side of the top of the lower support plate 2012, and among them, threads are provided on both of the two lower adjusting rods 2011; one lower adjusting block 2010 is installed on the thread of one lower adjusting rod 2011, one lower adjusting block 2010 is slidably installed on the other lower adjusting rod 2011, the other lower adjusting block 2010 is slidably installed on one lower adjusting rod 2011, and the other lower adjusting block 2010 is installed on the thread of the other lower adjusting rod 2011; two rotating screws 2013 are installed on the lower support plate 2012; a fixing cover 2014 is installed on the outer side of the rotating screw 2013;The fixed cover 2014 is installed at the bottom of the side end of the lifting arm body 401. When performing a strength test on the lifting arm component of the lift, the lifting arm body 401 on the lift body 4 moves to a suitable position and unfolds at a suitable angle. Then, the drive cylinder at the side end of the positioning support plate 2 drives the guide block 203 to move to a suitable position along the two guide rods 202. The traction support plate 201 positions the positioning support plate 2 to ensure the levelness of the position of the positioning support plate 2. The guide block 203 drives the guide cover 204 at the bottom to move to a suitable position. The drive cylinder at the side end of the guide cover 204 drives the guide plate 205 to move. The guide plate 205 drives the lower fixing rib 206 and the upper support plate 207 to be at a suitable angle. And the fixing rib 206 at the bottom of the guide plate 205 rotates to drive the upper support plate 207 to adjust the angle, so that the lower support plate 2012 is installed on the side end of the lifting arm body 401. Rotate the rotating screw 2013 to drive the fixed cover 2014 to be installed on the lifting arm body 401. Rotate the upper adjusting rod 208 and the lower adjusting rod 2011 in sequence on the inner side of the bottom of the upper support plate 207 and the inner side of the top of the lower support plate 2012 respectively. The thread on one upper adjusting rod 208 drives one upper adjusting block 209 to slide on another upper adjusting rod 208. Then, the thread on one lower adjusting rod 2011 on the same side drives one lower adjusting block 2010 to slide on another lower adjusting rod 2011, so that the drive cylinder between the upper adjusting block 209 and the lower adjusting block 2010 on the same side moves. The thread on another upper adjusting rod 208 on the other side drives another upper adjusting block 209 to slide on one upper adjusting rod 208. Then, the thread on another lower adjusting rod 2011 on the same side drives another lower adjusting block 2010 to slide along one lower adjusting rod 2011, so that the drive cylinder between the upper adjusting block 209 and the lower adjusting block 2010 on the other same side moves, so that there is a suitable distance between the two upper adjusting blocks 209 and the two lower adjusting blocks 2010, and the distances of the two lower adjusting blocks 2010 from the position of the fixed lifting arm body 401 are different. When the drive cylinder applies pressure for testing, the strength detection of the lifting arm body 401 under balanced pressure and unbalanced pressure can be tested. According to the pressure value detected by the pressure sensor and combined with the bending condition of the lifting arm body 401 monitored by the infrared level measuring probe on the rotating plate 306, the strength value of the lift's lifting arm is judged. By adjusting the positions of the upper adjusting block 209 and the lower adjusting block 2010, strength tests under different pressures can be realized. The test range is wide and the test results are relatively accurate. Simulating the situation of uneven weight distribution of new energy vehicles makes the test results more in line with the actual use of the lift.

[0026] Embodiment 3. On the basis of Embodiment 1, guiding vertical grooves 3 and a plurality of uniformly distributed positioning holes 301 are formed on both sides of the fixing bracket 1; a fixing sliding plate 302 is slidably installed inside the guiding vertical groove 3; a slot is formed on the side surface of the fixing sliding plate 302, and two positioning rods 303 are slidably installed in the slot on the side surface of the fixing sliding plate 302; the positioning rods 303 are slidably installed inside the positioning holes 301, and a connecting plate 304 is installed at the outer ends of the two positioning rods 303; a fixing support plate 305 is installed inside the side end of the fixing sliding plate 302; the fixing support plate 305 is installed at the bottom of the lifting arm body 401, and a rotating plate 306 is rotatably installed on the side surface of the fixing support plate 305; an infrared horizontal measuring probe is installed on the rotating plate 306. When performing strength detection on the lifting arm component of the lift, before the detection, the fixing support plate 305 and the fixing sliding plate 302 are installed according to the position of the lifting arm body 401 of the lift body 4, so that the two fixing sliding plates 302 penetrate through the guiding vertical grooves 3 and are located outside the fixing bracket 1, then the fixing support plate 305 is placed at the bottom position where the lifting arm body 401 is connected to the lift body 4, and the connecting plate 304 drives the two positioning rods 303 to be inserted into the positioning holes 301 through the slots on the side surface of the fixing sliding plate 302 to fix the positions of the fixing sliding plate 302 and the fixing support plate 305, further fixing the bottom of the lifting arm body 401 mechanically to prevent the problem of self-falling of the lifting arm body 401 during the detection process. Rotate the rotating plate 306 on the side surface of the fixing support plate 305 to drive the infrared horizontal measuring probe to face the bottom of the lifting arm body 401, and detect the bending condition of the lifting arm body 401 during the detection process to ensure the accuracy of the detection result.

[0027] Working principle of this embodiment: Place the fixed bracket 1 and the stabilizing plate 101 outside the lifting machine body 4. Slide and install the fixing plate 104 outside the lifting machine body 4 so that both ends thereof penetrate through the installation side grooves 102. Rotate and fix the two ends of the clamping plate 107 on the outside of the rotating member 106 and install them in the slots at both ends of the fixing plate 104 respectively. Rotate the driving screw 105 to drive the clamping plate 107 on the outside of the rotating member 106 to pull the fixing plate 104 to move outwards. The upper and lower fixing plates 104 are fixed outside the fixed bracket 1. Install the fixed support plate 305 and the fixed sliding plate 302 at the position of the lifting arm body 401 of the lifting machine body 4. The two fixed sliding plates 302 penetrate through the guiding vertical grooves 3 and are located outside the fixed bracket 1. The fixed support plate 305 is placed at the bottom position where the lifting arm body 401 is connected to the lifting machine body 4. The positioning rod 303 is inserted into the positioning hole 301 through the slot on the side of the fixed sliding plate 302 to fix the fixed sliding plate 302 and the fixed support plate 305, and further fix the bottom of the lifting arm body 401 mechanically to prevent the problem of self-falling of the lifting arm body 401. Rotate the rotating plate 306 on the side of the fixed support plate 305 to drive the infrared horizontal measurement probe towards the bottom of the lifting arm body 401. The driving cylinder at the side end of the positioning support plate 2 drives the guide block 203 to move to a suitable position along the two guide rods 202. The guide block 203 drives the guide cover 204 at the bottom to move to a suitable position. The driving cylinder at the side end of the guide cover 204 drives the fixing rib 206 and the upper support plate 207 below the guide plate 205 to move. Rotate the fixing rib 206 at the bottom of the guide plate 205 to drive the upper support plate 207 to adjust the angle. The lower support plate 2012 is installed on the side end of the lifting arm body 401. Rotate the rotating screw 2013 to install the fixing cover 2014 on the lifting arm body 401. Rotate the upper adjusting rod 208 and the lower adjusting rod 2011 on the same side respectively. The thread on one upper adjusting rod 208 drives one upper adjusting block 209 to slide on the other upper adjusting rod 208. The thread on one lower adjusting rod 2011 on the same side drives one lower adjusting block 2010 to slide on the other lower adjusting rod 2011, so that the upper adjusting block 209 and the lower adjusting block 2010 on the same side drive the driving cylinder between them to move. The same operation method drives the upper adjusting block 209 and the lower adjusting block 2010 on the other same side to move, so that the distances between the two upper adjusting blocks 209 and the two lower adjusting blocks 2010 are appropriate. By adjusting the positions of the upper adjusting block 209 and the lower adjusting block 2010, strength tests under different pressures can be realized, simulating the situation of uneven weight distribution of new energy vehicles. According to the pressure value detected by the pressure sensor and combined with the bending condition of the lifting arm body 401 monitored by the infrared horizontal measurement probe on the rotating plate 306, the strength value of the lifting arm of the lifting machine is judged, making the test result more in line with the actual use situation of the lifting machine.

[0028] In this article, the following points need attention: 1. The accompanying drawings of the embodiments of the present invention only relate to the structures involved in the embodiments of the present invention, and other structures can refer to the general design.

[0029] 2. Without conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other to obtain new embodiments.

[0030] The above are only the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A strength testing device for the mechanical components of a lifting arm of an automotive lift, comprising: A fixed support (1) and a lift body (4), a stabilizing plate (101) is installed at the bottom of the fixed support (1), and installation side grooves (102) are provided at the top and bottom of both sides of the fixed support (1), and the fixed support (1) is installed on the outside of the lift body (4); a lifting arm body (401) is installed on the lift body (4); characterized in that, guide vertical grooves (3) and a plurality of uniformly distributed positioning holes (301) are provided on both sides of the fixed support (1); a fixed sliding plate (302) is slidably installed inside the guide vertical groove (3); a slot is provided on the side surface of the fixed sliding plate (302), and two positioning rods (303) are slidably installed in the slot on the side surface of the fixed sliding plate (302); the positioning rods (303) are slidably installed inside the positioning holes (301), and a connecting plate (304) is installed at the outer ends of the two positioning rods (303); a fixed support plate (305) is installed inside the side end of the fixed sliding plate (302); the fixed support plate (305) is installed at the bottom of the lifting arm body (401), and a rotating plate (306) is rotatably installed on the side surface of the fixed support plate (305); an infrared horizontal measurement probe is installed on the rotating plate (306).

2. The strength testing device for the lifting arm mechanical components of an automotive lift according to claim 1, characterized in that, Positioning plates (103) are installed at the top and bottom of the inner side of the fixed support (1); a fixing plate (104) is slidably installed inside the installation side groove (102); both ends of the fixing plate (104) are provided with slots, and the opening positions of the two slots are in opposite directions, and the fixing plate (104) is slidably installed on the outside of the lift body (4).

3. The strength testing device for the lifting arm mechanical component of an automotive lift according to claim 2, wherein A driving screw rod (105) is rotatably installed on the side surface of the positioning plate (103); a rotating part (106) is installed on the driving screw rod (105); a fixed clamping plate (107) is rotatably installed on the outside of the rotating part (106); both ends of the fixed clamping plate (107) are slidably installed in the slots at both ends of the fixing plate (104).

4. The strength testing device for the lifting arm mechanical component of an automotive lift according to claim 3, characterized in that A positioning support plate (2) is installed at the top of the fixed support (1); a driving cylinder is installed at the side end of the positioning support plate (2), and a traction support plate (201) is installed on the side surface of the positioning support plate (2); the side surface of the traction support plate (201) is connected to the side end of the stabilizing plate (101); two guide rods (202) are installed at the bottom of the positioning support plate (2).

5. A strength testing device for the lifting arm mechanical components of an automotive lift according to claim 4, characterized in that, A guide block (203) is slidably installed on the outside of the guide rod (202); the side surface of the guide block (203) is connected to the output end of the driving cylinder at the side end of the positioning support plate (2); a guide cover (204) is installed at the bottom of the guide block (203).

6. The strength testing device for the lifting arm mechanical component of an automotive lift according to claim 5, characterized in that A driving cylinder is installed at the side end of the guide cover (204), and a guide plate (205) is slidably installed inside the guide cover (204); the side surface of the guide plate (205) is connected to the output end of the driving cylinder at the side end of the guide cover (204), and a fixed rib (206) is rotatably installed at the bottom of the guide plate (205).

7. The strength testing device for the lifting arm mechanical component of an automotive lift according to claim 6, characterized in that, The bottom of the fixed rib (206) is provided with an upper support plate (207); two upper adjusting rods (208) are rotatably installed on the inner side of the bottom of the upper support plate (207); threads are provided on the upper adjusting rods (208), and the threads on the two upper adjusting rods (208) are staggered, and two upper adjusting blocks (209) are installed on the upper adjusting rods (208).

8. A strength testing device for the lifting arm mechanical component of an automotive lift, according to claim 7, characterized in that A driving cylinder is installed at the bottom of the upper adjusting block (209). One upper adjusting block (209) is installed on the thread of one upper adjusting rod (208), one upper adjusting block (209) is slidably installed on the other upper adjusting rod (208), the other upper adjusting block (209) is slidably installed on one upper adjusting rod (208), and the other upper adjusting block (209) is installed on the thread of the other upper adjusting rod (208).

9. The strength testing device for the lifting arm mechanical component of an automotive lift according to claim 8, wherein A pressure sensor is installed at the output end of the driving cylinder at the bottom of the upper adjusting block (209), and a lower adjusting block (2010) is connected to the bottom of the pressure sensor; a lower support plate (2012) is installed on the side end of the lifting arm body (401); two lower adjusting rods (2011) are rotatably installed on the inner side of the top of the lower support plate (2012), and threads are provided on both of the two lower adjusting rods (2011).

10. The strength testing device for the lifting arm mechanical component of an automotive lift according to claim 9, characterized in that, One lower adjusting block (2010) is installed on the thread of one lower adjusting rod (2011), one lower adjusting block (2010) is slidably installed on the other lower adjusting rod (2011), the other lower adjusting block (2010) is slidably installed on one lower adjusting rod (2011), and the other lower adjusting block (2010) is installed on the thread of the other lower adjusting rod (2011); two rotating screws (2013) are installed on the lower support plate (2012); a fixed cover (2014) is installed on the outer side of the rotating screw (2013); the fixed cover (2014) is installed at the bottom of the side end of the lifting arm body (401).

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