A testing device for the compressive performance of automobile axles

Abstract

The present invention relates to the field of vehicle axle detection technology, and in particular to a device for detecting the compressive resistance of automobile axles, comprising a shell, a mounting column fixedly mounted on the shell, an automobile axle placed on the upper end of the shell, a limiting auxiliary mechanism for fixing the automobile axle on the upper end of the shell, a compressive resistance detection mechanism provided on the upper and lower sides of the limiting auxiliary mechanism, a safety protection mechanism provided on the upper side of the shell, the compressive resistance detection mechanism comprising a movable track movably mounted inside the shell, support push rods provided below the left and right sides of the movable track, and a movable block slidably connected inside the movable track. The present invention, by providing a compressive resistance detection mechanism and utilizing the mutual cooperation between the support push rod and the movable track, can automatically cause the two ends of the automobile axle to alternately tilt upwards during the hammering test, thereby simulating the situation when the vehicle passes through a pit, and can greatly improve the credibility of the hammering test results.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle axle detection, and in particular to a device for detecting the compressive performance of a vehicle axle. Background Art

[0002] The axle, also known as the axle, is connected to the frame (or load-bearing body) through the suspension, with wheels installed at both ends. The function of the axle is to bear the load of the car and maintain the normal driving of the car on the road. Therefore, the compressive resistance of the axle will directly affect the safety and stability of the vehicle's driving. Therefore, the axle will be tested for its compressive resistance after production.

[0003] In the prior art, when performing compression testing on axles, the axles are usually first suspended and fixed, and then a cylinder is used to continuously apply force to the axles until the axles are damaged. The ultimate force applied to the axles is then tested. However, the magnitude and direction of the force applied to the axles are constantly changing while the vehicle is driving. The above-mentioned testing method directly fixes the axles completely, which may result in inaccurate test results and low reliability. Summary of the Invention

[0004] In response to the shortcomings of the existing technology, the present invention provides a device for testing the compressive performance of automobile axles, which solves the technical problems in the existing technology that the results of compressive testing of axles are not accurate enough and the credibility is low. It has the advantage of being able to automatically simulate the situation when a vehicle passes through a pothole during the compressive testing process, which can effectively improve the credibility of the test results.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a device for detecting the compressive performance of an automobile axle, comprising a shell, a mounting column fixedly mounted on the shell, an automobile axle placed on the upper end of the shell, a limiting auxiliary mechanism for fixing the automobile axle on the upper end of the shell, a pressure detection mechanism provided on the upper and lower sides of the limiting auxiliary mechanism, a safety protection mechanism provided above the shell, when performing the detection work, the limiting auxiliary mechanism will limit the position of the automobile axle, and then the pressure detection mechanism will perform a hammer pressure test on the automobile axle, and during the test, the safety protection mechanism will shield and protect the detection area, and the pressure detection mechanism includes a movable track movably mounted inside the shell, the movable track Support push rods are provided at the bottom of the left and right sides, the movable block is connected to the inner sliding connection of the movable track, a hydraulic hammer assembly is provided at the upper end of the mounting column, and a controller is provided above the hydraulic hammer assembly. A limited through hole is provided on the side wall of the movable track, and mounting grooves are provided on the front and rear sides of the movable block. The internal sliding connection of the mounting groove is connected to the limited protrusion, an electromagnetic base is fixedly installed inside the mounting groove, and a push spring is fixedly installed between the electromagnetic base and the limit protrusion. An adjusting pull rod is fixedly installed on the outside of the movable block, and rectangular channels are provided on the left and right sides of the shell. When working, the hydraulic hammer assembly will perform a compressive hammer test on the car axle. During the test, the support push rod will automatically extend upward to cause the left and right sides of the car axle to tilt.

[0006] Preferably, the limiting auxiliary mechanism includes a horizontal through slot opened at the upper end of the shell body, a supporting slide is movably installed inside the horizontal through slot, the lower end of the supporting slide is rotatably connected to the movable block, the upper end of the supporting slide is provided with a limiting slide, the internal movably installed with a bidirectional screw rod, the back of the supporting slide is fixedly provided with a driving motor for driving the bidirectional screw rod, the external movably installed with a sliding protrusion of the bidirectional screw rod, the upper end of the sliding protrusion is fixedly provided with a limiting block, the upper end of one of the limiting blocks is movably provided with an arc buckle plate, the upper end of the other limiting block is provided with an avoidance groove, and a fixed magnetic block is arranged inside the avoidance groove. During the detection process, the four limiting blocks will complete the limiting effect on the automobile axle under the action of the bidirectional screw rod. After the limiting is completed, the arc buckle plate will block the top of the automobile axle.

[0007] Preferably, the bidirectional screw consists of two threaded sections with opposite rotation directions, and the sliding protrusion is threadedly matched with the bidirectional screw. When the bidirectional screw rotates under the action of the driving motor, the two sliding protrusions will approach each other, thereby achieving a limiting effect on the car axle.

[0008] Preferably, the fixed magnetic block is an electromagnet, and an iron block is fixedly installed at the end of the arc-shaped buckle plate. After the fixed magnetic block is energized to generate magnetism, the end of the arc-shaped buckle plate will be magnetically fixed.

[0009] Preferably, a rotating shaft is fixedly installed in the middle of the movable track, and the rotating shaft is rotatably connected to the inner wall of the shell. The support push rod is fixedly installed inside the shell, and the upper end of the support push rod contacts the end of the movable track. When the support push rod extends upward, one end of the movable track will be tilted upward, thereby causing the car axle to tilt.

[0010] Preferably, the hydraulic hammer assembly includes a hydraulic hammer movably mounted on the upper end of the mounting column, and the hydraulic hammer is electrically connected to the controller via a wire. When in use, the inspector can adjust the hammering force and number of hammering times of the hydraulic hammer through the controller.

[0011] Preferably, the limiting protrusion is made of iron, and the shape of the limiting protrusion matches the limiting through hole. When the limiting protrusion extends outward under the action of the push spring, it will pass through the inside of the limiting through hole, thereby completing the limiting.

[0012] Preferably, the end of the adjusting rod extends to the outside of the shell through a rectangular channel, and a push switch is provided at the end of the adjusting rod. The push switch is electrically connected to the electromagnetic base through a wire. When the inspector manually turns on the push switch, the electromagnetic base will magnetically attract the limit protrusion and move it to the inside of the installation groove.

[0013] Preferably, the safety protection mechanism includes vertical slide grooves opened on the left and right sides of the mounting column, a vertical slider is movably installed inside the vertical slide groove, and a protective cover shell is movably installed above the shell, the protective cover shell is made of transparent plastic and is fixedly connected to the vertical slider.

[0014] By means of the above technical solution, the present invention provides a device for testing the compressive performance of automobile axles, which has at least the following beneficial effects:

[0015] 1. The present invention provides a compression detection mechanism and utilizes the interaction between the support push rod and the movable track to automatically cause the two ends of the vehicle axle to alternately tilt upward during the hammer detection process, thereby simulating the situation when the vehicle passes through a pothole, which can greatly improve the credibility of the hammer detection results.

[0016] 2. The present invention provides a compression detection mechanism and utilizes the mutual cooperation between the limiting protrusion and the movable block to automatically adjust the distance between the two supporting slides according to the detection needs, so that the device can be applied to automobile axles of various lengths and sizes, and has a wide range of applications.

[0017] 3. The present invention sets a limiting auxiliary mechanism and utilizes the mutual cooperation between the sliding protrusion and the bidirectional screw rod to automatically clamp and limit the front and rear sides of the automobile axle so that it is located directly below the hydraulic hammer assembly. This can effectively prevent the automobile axle from moving forward and backward during the hammer detection process, thereby ensuring the consistency of the hammer position and improving the detection accuracy.

[0018] 4. The present invention sets a limiting auxiliary mechanism and utilizes the mutual cooperation between the arc-shaped gusset plate and the fixed magnetic block to automatically magnetically fix the arc-shaped gusset plate above the automobile axle, thereby shielding the upper side of the automobile axle, which can effectively prevent the automobile axle from popping up during the hammer test and improve the safety of the pressure resistance test.

[0019] 5. The present invention provides a safety protection mechanism and utilizes the cooperation between the protective cover and the vertical slider to automatically shield and isolate the hammering area, which can effectively prevent the fragments that may be generated during hammering from causing damage to the inspectors. Moreover, the inspectors can observe the car axle at all times through the protective cover, which greatly improves the safety of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0021] Figure 1 It is a front view of the overall structure of the present invention;

[0022] Figure 2 It is a schematic diagram of some structures in the present invention;

[0023] Figure 3 Schematic diagram of the interior of the position limiting auxiliary mechanism of the present invention;

[0024] Figure 4 is a cross-sectional view of the supporting slide structure of the present invention;

[0025] Figure 5 Schematic diagram of the internal structure of the housing in the present invention;

[0026] Figure 6 Schematic diagram of the compression testing mechanism of the present invention;

[0027] Figure 7 Schematic diagram of the internal structure of the movable block in the present invention.

[0028] In the figure: 1. Shell; 2. Mounting column; 3. Limit auxiliary mechanism; 301. Horizontal through groove; 302. Support slide; 303. Limit slide; 304. Bidirectional screw; 305. Drive motor; 306. Sliding protrusion; 307. Limit block; 308. Arc-shaped buckle plate; 309. Avoidance groove; 310. Fixed magnetic block; 4. Compression detection mechanism; 401. Movable track; 402. Support push rod; 403. Movable block; 404. Hydraulic hammer assembly; 405. Controller; 406. Limit through hole; 407. Limit protrusion; 408. Electromagnetic base; 409. Push spring; 410. Adjustment rod; 411. Rectangular channel; 5. Safety protection mechanism; 501. Vertical slide; 502. Vertical slider; 503. Protective cover; 6. Automobile axle. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] Example 1

[0031] according to Figure 1-Figure 5 As shown, a device for testing the compressive performance of an automobile axle includes a shell 1, a mounting column 2 is fixedly mounted on the shell 1, an automobile axle 6 is placed on the upper end of the shell 1, and a limiting auxiliary mechanism 3 for fixing the automobile axle 6 is provided on the upper end of the shell 1. Compression testing mechanisms 4 are provided on the upper and lower sides of the limiting auxiliary mechanism 3, and a safety protection mechanism 5 is provided above the shell 1. When performing the detection work, the limiting auxiliary mechanism 3 will limit the position of the automobile axle 6, and then the compression testing mechanism 4 will perform a hammer compression test on the automobile axle 6. During the test, the safety protection mechanism 5 will shield and protect the detection area.

[0032] Specifically, the limiting auxiliary mechanism 3 includes a horizontal through slot 301 provided at the upper end of the shell 1, and a supporting slide 302 is movably installed inside the horizontal through slot 301. The lower end of the supporting slide 302 is rotatably connected to the movable block 403. The upper end of the supporting slide 302 is provided with a limiting slot 303. A bidirectional screw rod 304 is movably installed inside the limiting slot 303. The bidirectional screw rod 304 consists of two threaded sections with opposite rotation directions. A driving motor 305 for driving the bidirectional screw rod 304 is fixedly installed on the back of the supporting slide 302, and a sliding protrusion 306 is movably installed on the outside of the bidirectional screw rod 304. The sliding protrusion 306 is threadedly matched with the bidirectional screw rod 304. When the bidirectional screw rod 304 rotates under the action of the driving motor 305, the two sliding The movable protrusions 306 are close to each other, thereby realizing the limiting effect on the automobile axle 6. The upper end of the sliding protrusion 306 is fixedly installed with a limiting block 307, and the upper end of one of the limiting blocks 307 is movably installed with an arc-shaped clip 308, and the upper end of the other limiting block 307 is provided with an avoidance groove 309. The inside of the avoidance groove 309 is provided with a fixed magnetic block 310, and the fixed magnetic block 310 is an electromagnet. The end of the arc-shaped clip 308 is fixedly installed with an iron block. After the fixed magnetic block 310 is energized to generate magnetism, the end of the arc-shaped clip 308 will be magnetically fixed. During the detection process, the four limiting blocks 307 will complete the limiting effect on the automobile axle 6 under the action of the bidirectional screw rod 304. After the limiting is completed, the arc-shaped clip 308 will block the top of the automobile axle 6.

[0033] In this embodiment, before the compression test begins, the tester will place the automobile axle 6 above the support slide 302. Then, the bidirectional screw 304 will rotate around its own axis under the action of the drive motor 305. When the bidirectional screw 304 rotates, the two sliding protrusions 306 will approach each other. When the sliding protrusions 306 move, the limit blocks 307 will move synchronously. After the limit blocks 307 move, they will clamp and limit the front and rear sides of the automobile axle 6, thereby ensuring the accuracy of the hammering position during the compression test.

[0034] Moreover, if Figure 4 As shown, after the limiting is completed, the inspector will manually rotate the arc-shaped buckle plate 308 to rotate the arc-shaped buckle plate 308 to a horizontal state. At this time, the end of the arc-shaped buckle plate 308 will enter the avoidance groove 309. Since the fixed magnetic block 310 is in an energized and magnetized state at this time, the fixed magnetic block 310 will adsorb and fix the end of the arc-shaped buckle plate 308, so that the arc-shaped buckle plate 308 is blocked above the car axle 6.

[0035] This embodiment sets a limit auxiliary mechanism 3, and utilizes the mutual cooperation between the sliding protrusion 306 and the bidirectional screw rod 304 to automatically clamp and limit the front and rear sides of the automobile axle 6, so that it is located directly below the hydraulic hammer assembly 404, which can effectively prevent the automobile axle 6 from moving forward and backward during the hammer detection process, thereby ensuring the consistency of the hammering position and improving the detection accuracy; moreover, this embodiment sets a limit auxiliary mechanism 3, and utilizes the mutual cooperation between the arc-shaped buckle plate 308 and the fixed magnetic block 310 to automatically magnetically fix the arc-shaped buckle plate 308 above the automobile axle 6, thereby shielding the upper side of the automobile axle 6, which can effectively prevent the automobile axle 6 from popping up during the hammer detection process, thereby improving the safety of the pressure resistance detection.

[0036] Example 2

[0037] according to Figure 1-Figure 7 As shown, on the basis of embodiment 1, the pressure resistance detection mechanism 4 includes a movable track 401 movably installed inside the shell 1, a rotating shaft is fixedly installed in the middle of the movable track 401, and the rotating shaft is rotatably connected to the inner wall of the shell 1, and support push rods 402 are provided below the left and right sides of the movable track 401, and the support push rods 402 are fixedly installed inside the shell 1. The upper end of the support push rod 402 contacts the end of the movable track 401. When the support push rod 402 extends upward, one end of the movable track 401 will be tilted upward, thereby tilting the automobile axle 6. A movable block 403 is slidably connected to the interior of the movable track 401, and a hydraulic hammer assembly 404 is provided on the upper end of the mounting column 2. A controller 405 is provided above the hydraulic hammer assembly 404, and a limited through hole 406 is provided on the side wall of the movable track 401. The front and rear sides of the movable block 403 are provided with mounting grooves, and the internal sliding connection of the mounting grooves is provided with a limiting protrusion 407, which is made of iron. The shape of the limiting protrusion 407 matches the limiting through-hole 406. When the limiting protrusion 407 extends outward under the action of the push spring 409, it will pass through the inside of the limiting through-hole 406, thereby completing the limitation. An electromagnetic base 408 is fixedly installed inside the mounting groove, and a push spring 409 is fixedly installed between the electromagnetic base 408 and the limiting protrusion 407. An adjusting rod 410 is fixedly installed outside the movable block 403, and rectangular channels 411 are provided on the left and right sides of the shell 1. When working, the hydraulic hammer assembly 404 will perform a compressive hammer test on the automobile axle 6. During the test, the support push rod 402 will automatically extend upward to cause the left and right sides of the automobile axle 6 to tilt.

[0038] Specifically, the hydraulic hammer assembly 404 includes a hydraulic hammer movably mounted on the upper end of the mounting column 2 . The hydraulic hammer is electrically connected to the controller 405 via a wire. During use, the inspector can adjust the hammering force and number of hammering times of the hydraulic hammer through the controller 405 .

[0039] Specifically, the end of the adjusting rod 410 extends to the outside of the shell 1 through the rectangular channel 411. A push switch is provided at the end of the adjusting rod 410. The push switch is electrically connected to the electromagnetic base 408 through a wire. When the inspector manually turns on the push switch, the electromagnetic base 408 will magnetically attract the limit protrusion 407 and move it to the inside of the installation groove.

[0040] In this embodiment, the movable track 401 is initially in a horizontal state. The inspector will hold the end of the adjustment rod 410 to turn on the push switch. After the push switch is turned on, the limiting protrusion 407 will shrink into the inside of the installation groove under the magnetic attraction of the electromagnetic base 408, thereby releasing the limiting effect on the movable block 403.

[0041] Next, the inspector will drag the adjustment rod 410 to make the movable block 403 move horizontally along the movable track 401. When the movable block 403 moves, the supporting slide 302 will move synchronously, thereby adjusting the distance between the two supporting slides 302. After the adjustment is completed, the inspector's hand will be out of contact with the press switch. Then, the limit protrusion 407 will extend and insert into the inside of the limit through hole 406 under the action of the push spring 409, thereby fixing the position of the movable block 403 again.

[0042] Next, the inspector will fix the automobile axle 6 above the support slide 302 and set the hammering pressure and number on the controller 405. After the parameters are set, the hydraulic hammer will automatically perform hammering inspection on the automobile axle 6 under the action of the controller 405.

[0043] During the hammer test, if Figure 6 As shown, the two support push rods 402 will extend upward alternately under the control of the inspector. When the support push rods 402 extend upward, one of the support slides 302 will move upward a certain distance, thereby causing one end of the car axle 6 to tilt upward, thereby simulating the situation of the vehicle driving on a bumpy road.

[0044] This embodiment provides a pressure-resistant detection mechanism 4, and utilizes the mutual cooperation between the support push rod 402 and the movable track 401, so that the two ends of the automobile axle 6 can be automatically tilted upward alternately during the hammer detection process, thereby simulating the situation when the vehicle passes through a pothole, which can greatly improve the credibility of the hammer detection result; in addition, this embodiment provides a pressure-resistant detection mechanism 4, and utilizes the mutual cooperation between the limit protrusion 407 and the movable block 403, so that the distance between the two supporting slides 302 can be automatically adjusted according to the detection needs, so that the device can be applicable to automobile axles 6 of various lengths and sizes, and has a wide range of applications.

[0045] Example 3

[0046] according to Figure 1 and Figure 2 As shown, the safety protection mechanism 5 includes a vertical slide groove 501 opened on the left and right sides of the mounting column 2, a vertical slider 502 is movably installed inside the vertical slide groove 501, and a protective cover shell 503 is movably installed above the shell 1. The protective cover shell 503 is made of transparent plastic and is fixedly connected to the vertical slider 502.

[0047] In this embodiment, Figure 1 As shown, during the hammering test, the inspector will push the protective cover shell 503 downward so that the protective cover shell 503 covers the four sides of the hammering processing area, which can effectively prevent the fragments that may be generated during the hammering process from flying around, thereby preventing the inspector from being injured.

[0048] Moreover, since the protective cover shell 503 is made of transparent plastic, the inspector can observe the status of the car axle 6 at any time during the hammering process to prevent accidents. After the hammering test is completed, the inspector will push the protective cover shell 503 upward to move it out of the hammering area so that it will not block the unloading operation.

[0049] This embodiment provides a safety protection mechanism 5 and utilizes the cooperation between the protective cover shell 503 and the vertical slider 502 to automatically shield and isolate the hammering area, which can effectively prevent the fragments that may be generated during the hammering from causing damage to the inspector. Moreover, the inspector can observe the car axle 6 at all times through the protective cover shell 503, which greatly improves the safety of the device.

[0050] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by a person skilled in the art. The provision of power is also common knowledge in the art. The present invention is mainly used to protect mechanical devices, so the control method and circuit connection are not explained in detail in the present invention.

[0051] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements that are inherent to such process, method, article or apparatus.

[0052] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A device for testing the compressive performance of an automobile axle, comprising a housing (1), a mounting post (2) fixedly mounted on the housing (1), and an automobile axle (6) placed on the upper end of the housing (1), characterized in that: The upper end of the housing (1) is provided with a position limiting auxiliary mechanism (3) for fixing the automobile axle (6), and the upper and lower sides of the position limiting auxiliary mechanism (3) are both provided with a pressure resistance detection mechanism (4), and a safety protection mechanism (5) is provided above the housing (1); The pressure resistance detection mechanism (4) includes a movable track (401) movably mounted inside the housing (1), support push rods (402) are provided below the left and right sides of the movable track (401), a movable block (403) is slidably connected inside the movable track (401), a hydraulic hammer assembly (404) is provided at the upper end of the mounting column (2), a controller (405) is provided above the hydraulic hammer assembly (404), a limited through hole (406) is provided on the side wall of the movable track (401), a mounting groove is provided on the front and rear sides of the movable block (403), a limited protrusion (407) is slidably connected inside the mounting groove, an electromagnetic base (408) is fixedly installed inside the mounting groove, a push spring (409) is fixedly installed between the electromagnetic base (408) and the limited protrusion (407), an adjusting pull rod (410) is fixedly installed outside the movable block (403), and rectangular channels (411) are provided on the left and right sides of the housing (1); The limiting auxiliary mechanism (3) includes a horizontal through slot (301) provided at the upper end of the housing (1), a support slide (302) is movably installed inside the horizontal through slot (301), the lower end of the support slide (302) is rotatably connected to the movable block (403), a limiting slide slot (303) is provided at the upper end of the support slide (302), a bidirectional screw rod (304) is movably installed inside the limiting slide slot (303), and a useful screw rod (304) is fixedly installed on the back of the support slide (302). A driving motor (305) for driving a bidirectional screw rod (304) is provided. A sliding protrusion (306) is movably mounted on the outside of the bidirectional screw rod (304). A limiting block (307) is fixedly mounted on the upper end of the sliding protrusion (306). An arc-shaped buckle plate (308) is movably mounted on the upper end of one limiting block (307). An avoidance groove (309) is provided on the upper end of the other limiting block (307). A fixed magnetic block (310) is provided inside the avoidance groove (309). The fixed magnetic block (310) is an electromagnet, and an iron block is fixedly mounted on the end of the arc-shaped buckle plate (308).

2. The device for testing the compressive performance of an automobile axle according to claim 1, characterized in that: The bidirectional screw rod (304) is composed of two threaded sections with opposite rotation directions, and the sliding protrusion (306) is threadedly engaged with the bidirectional screw rod (304).

3. The device for testing the compressive performance of an automobile axle according to claim 1, characterized in that: A rotating shaft is fixedly installed in the middle of the movable track (401), and the rotating shaft is rotatably connected to the inner wall of the shell (1). The support push rod (402) is fixedly installed inside the shell (1), and the upper end of the support push rod (402) contacts the end of the movable track (401).

4. The device for testing the compressive performance of an automobile axle according to claim 1, characterized in that: The hydraulic hammer assembly (404) includes a hydraulic hammer movably mounted on the upper end of the mounting column (2), and the hydraulic hammer is electrically connected to the controller (405) via a wire.

5. The device for testing the compressive performance of an automobile axle according to claim 1, characterized in that: The limiting protrusion (407) is made of iron, and the shape of the limiting protrusion (407) matches the limiting through hole (406).

6. The device for testing the compressive performance of an automobile axle according to claim 1, characterized in that: The end of the adjusting rod (410) extends to the outside of the housing (1) through a rectangular channel (411). A push switch is provided at the end of the adjusting rod (410), and the push switch is electrically connected to the electromagnetic base (408) via a wire.

7. The device for testing the compressive performance of an automobile axle according to claim 1, characterized in that: The safety protection mechanism (5) comprises vertical slide grooves (501) provided on the left and right sides of the mounting column (2), a vertical slider (502) being movably mounted inside the vertical slide grooves (501), and a protective cover shell (503) being movably mounted above the housing (1), the protective cover shell (503) being made of transparent plastic and fixedly connected to the vertical slider (502).

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