A strength detection device for automobile lower swing arm processing

Abstract

The application relates to the technical field of automobile lower swing arm detection, and discloses a strength detection device for automobile lower swing arm machining, which comprises a base, a mounting plate arranged above the base, two vertical rods connecting the base and the mounting plate, a groove arranged on the mounting plate, a cylinder arranged on the bottom surface of the mounting plate, a first rack fixed to the telescopic end of the cylinder, a plurality of test assemblies arranged on the mounting plate and distributed in a circumferential array around the central position of the mounting plate, and a driving assembly arranged on the bottom surface of the mounting plate and used for driving the plurality of test assemblies to operate. The application designs multiple test stations, can simultaneously test the strength of multiple automobile lower swing arms, avoids the tedious process of individual test, and significantly improves the overall test efficiency.

Description

Technical Field

[0001] This invention relates to the field of automotive lower control arm testing technology, and more particularly to a strength testing device for automotive lower control arm processing. Background Technology

[0002] The strength testing device for automotive lower control arms is a test equipment specifically designed to evaluate the strength and durability of automotive lower control arms and related components under long-term use.

[0003] In existing technologies, the lower swing arm is typically subjected to continuous vibration testing using a vibration machine. By repeatedly loading the load, the fatigue life of the lower swing arm is recorded, which is the number of cycles it can withstand before failure. However, the device can only test one lower swing arm at a time and cannot test multiple lower swing arms simultaneously, which significantly limits the overall testing efficiency and makes it difficult to meet the testing needs of large-scale production or high-efficiency R&D scenarios.

[0004] Therefore, it is necessary to design a strength testing device for the processing of automotive lower control arms to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a strength testing device for the processing of automotive lower control arms.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A strength testing device for processing automotive lower control arms includes a base, a mounting plate on top of the base, the mounting plate being connected to the base via two vertical rods, a groove on the mounting plate, a cylinder mounted on the bottom surface of the mounting plate, a first rack fixed to the telescopic end of the cylinder, a plurality of test components arranged on the mounting plate in a circumferential array around the center of the mounting plate, and a drive component on the bottom surface of the mounting plate for driving the test components to operate.

[0008] As a preferred embodiment of the present invention, the test assembly includes a fixed frame and a connecting frame. The fixed frame is fixed on a mounting plate, and the connecting frame and the fixed frame are connected by a rotating shaft. One end of the rotating shaft is fixed on the connecting frame, and the other end is rotatably mounted on the fixed frame. A gear is fixedly sleeved on the rotating shaft. A fixed plate is fixed on the connecting frame. A first positioning rod is fixed on the top surface of the fixed plate, and a fixed shaft is fixed on the bottom surface. A swing plate is rotatably sleeved on the fixed shaft. A connecting rod is fixed on the end of the swing plate away from the fixed shaft, and a second positioning rod is fixed on the top surface of the swing plate. The fixed plate and the swing plate are connected by a torsion spring.

[0009] As a preferred embodiment of the present invention, the drive assembly includes a first shaft, which is rotatably mounted at the center of the bottom surface of the mounting plate. A rotating disk is fixedly sleeved on the first shaft, and a plurality of horizontal plates are fixed on the outer circumferential surface of the rotating disk. The plurality of horizontal plates are respectively arranged opposite to a plurality of connecting rods. A second gear is fixedly sleeved on the first shaft, and the second gear meshes with a first rack.

[0010] As a preferred embodiment of the present invention, the mounting plate is provided with a flipping assembly for automatic disengagement of the lower swing arm. The flipping assembly includes several transmission rods. The mounting plate is provided with a rotating assembly for driving the several transmission rods to rotate. The rotating assembly includes a second rack. The mounting plate is provided with a positioning assembly and a pushing assembly. The positioning assembly is used to lock the position of the second rack, and the pushing assembly is used to push the second rack to move. The groove is provided with a reset assembly for controlling the reset of the second rack.

[0011] As a preferred embodiment of the present invention, the flipping assembly further includes a second shaft, which is rotatably mounted at the center of the top surface of the mounting plate. A gear three is arranged on the second shaft, and the gear three is connected to the second shaft through a one-way bearing. A plurality of transmission rods are rotatably mounted on the mounting plate, and the plurality of transmission rods are arranged in a circumferential array around the second shaft. A first bevel gear is fixedly sleeved on the second shaft. A second bevel gear is fixedly sleeved on each transmission rod, and the plurality of second bevel gears mesh with the first bevel gear. A gear four is fixedly sleeved on each transmission rod, and the plurality of gear four mesh with a plurality of gear one respectively.

[0012] As a preferred embodiment of the present invention, the rotating assembly further includes a slide rail, which is fixed to the top surface of the mounting plate by two support rods. A slider is slidably mounted on the slide rail. The second rack is fixed to the side of the slider and meshes with a gear. The top surface of the second rack has several slots. A connecting rod is also fixed to the side of the slider. The connecting rod has a U-shaped structure. The end of the connecting rod away from the slider extends to the bottom of the mounting plate. Several sleeve plates are fixedly mounted on the connecting rod. The sleeve plates are arranged in a linear array. A fixing block is fixed on the connecting rod.

[0013] As a preferred embodiment of the present invention, the positioning component includes a bracket, which is fixed to the top surface of the mounting plate. A first slide rod is slidably disposed on the bracket, and a locking plate is fixed to the bottom end of the first slide rod. An inclined surface is provided on the locking plate, and the locking plate is connected to the bracket by a first spring.

[0014] As a preferred embodiment of the present invention, the shape of the card plate is adapted to the slot, and when the card plate is inserted into the slot, the side of the card plate fits against the slot wall.

[0015] As a preferred embodiment of the present invention, the pushing assembly includes a side plate, the side plate is fixed to the side of the first rack, a second slide rod is slidably disposed on the side plate, a push block is fixed to the bottom end of the second slide rod, the push block is provided with an inclined surface, and the push block is connected to the side plate by a second spring.

[0016] As a preferred embodiment of the present invention, the reset assembly includes a cylinder and a rod. The cylinder is fixed in a groove, the rod slides in the cylinder, one end of the rod extends to the outside of the cylinder and is positioned opposite the fixing block, and the rod and the cylinder are connected by a third spring.

[0017] The present invention has the following beneficial effects:

[0018] 1. Multiple test stations were designed to simultaneously perform strength tests on multiple automotive lower control arms, avoiding the tedious process of testing them one by one and significantly improving overall testing efficiency.

[0019] 2. The device is equipped with a flipping component, a rotating component, a positioning component, a pushing component, and a reset component, which not only enables the device to perform testing but also allows for the rapid and automatic removal of several lower control arms of automobiles after the test, eliminating the need for manual disassembly and further improving work efficiency.

[0020] 3. The power generated by the cylinder driving the first rack to reciprocate during the test is used to store energy. After the test is completed, the lower swing arm can be automatically flipped and dropped through the linkage of various components. There is no need to set up a separate power source to drive the disassembly process, which reduces the energy consumption and cost of the device. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a strength testing device for processing automotive lower control arms proposed in this invention;

[0022] Figure 2 Schematic diagram of the mounting plate and several test components Figure 1 ;

[0023] Figure 3 Schematic diagram of the mounting plate and several test components Figure 2 ;

[0024] Figure 4 for Figure 2 Enlarged view of the structure at point A;

[0025] Figure 5 for Figure 3 Enlarged view of the structure at point B;

[0026] Figure 6 This is a cross-sectional view of the mounting plate.

[0027] Figure 7 Schematic diagram of the test component Figure 1 ;

[0028] Figure 8 Schematic diagram of the test component Figure 2 ;

[0029] Figure 9 A cross-sectional view of the second rack and the positioning assembly;

[0030] Figure 10 This is a schematic diagram of the structure of the first rack and the push assembly.

[0031] In the diagram: 1. Base; 2. Vertical rod; 3. Mounting plate; 31. Groove; 32. Cylinder; 33. First rack; 41. Fixing frame; 42. Rotating shaft; 421. Gear 1; 43. Connecting frame; 44. Fixing plate; 441. First positioning rod; 442. Fixing shaft; 45. Swing plate; 451. Connecting rod; 452. Second positioning rod; 46. Torsion spring; 51. First shaft; 511. Gear 2; 52. Rotating disk; 53. Horizontal plate; 61. Second shaft; 611. Gear 3; 6 12. One-way bearing; 62. Transmission rod; 621. Gear four; 63. First bevel gear; 64. Second bevel gear; 71. Slide rail; 72. Slider; 73. Second rack; 731. Slot; 74. Connecting rod; 741. Sleeve plate; 742. Fixing block; 81. Bracket; 82. First slide rod; 83. Clamping plate; 84. First spring; 91. Side plate; 92. Second slide rod; 93. Second spring; 94. Push block; 101. Cylinder; 102. Rod body; 103. Third spring. Detailed Implementation

[0032] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0033] Example 1: This example discloses a strength testing device for processing automotive lower control arms. (Refer to...) Figure 1-8The system includes a base 1, with a mounting plate 3 on top of the base 1. The mounting plate 3 is connected to the base 1 via two vertical rods 2. A groove 31 is provided on the mounting plate 3. A cylinder 32 is mounted on the bottom surface of the mounting plate 3. A first rack 33 is fixed to the telescopic end of the cylinder 32. Several test components are arranged on the mounting plate 3 in a circumferential array around the center of the mounting plate 3. Each test component includes a fixing frame 41 and a connecting frame 43. The fixing frame 41 is fixed to the mounting plate 3, and the connecting frame 43 is connected to the fixing frame 41 via a rotating shaft 42. One end of the rotating shaft 42 is fixed to the connecting frame 43, and the other end is rotatably mounted on the fixing frame 41. A gear 421 is fixedly sleeved on the rotating shaft 42. A fixed plate 44 is fixed on the connecting bracket 43. A first positioning rod 441 is fixed on the top surface of the fixed plate 44, and a fixed shaft 442 is fixed on the bottom surface. A swing plate 45 is rotatably sleeved on the fixed shaft 442. A connecting rod 451 is fixed to the end of the swing plate 45 away from the fixed shaft 442. A second positioning rod 452 is fixed to the top surface of the swing plate 45. The fixed plate 44 and the swing plate 45 are connected by a torsion spring 46. During testing, the operator places the hole at one end of the lower control arm onto the first positioning rod 441, and then places the hole at the other end of the lower control arm onto the second positioning rod 452, forming a... Figure 7 As shown, when the swing plate 45 swings, the second positioning rod 452 can drive the lower control arm of the car to swing, causing the lower control arm to vibrate continuously, thereby performing a strength test on the lower control arm. This invention designs multiple test stations, which can simultaneously perform strength tests on multiple lower control arms of the car, improving test efficiency.

[0034] The bottom surface of the mounting plate 3 is provided with a drive assembly for driving the operation of several test components. The drive assembly includes a first shaft 51, which is rotatably mounted at the center of the bottom surface of the mounting plate 3. A rotating disk 52 is fixedly sleeved on the first shaft 51. Several horizontal plates 53 are fixed on the outer circumference of the rotating disk 52. The several horizontal plates 53 are respectively positioned opposite several connecting rods 451. A second gear 511 is fixedly sleeved on the first shaft 51, and the second gear 511 meshes with the first rack 33.

[0035] The implementation principle of this embodiment is as follows: When using this invention, the operator first arranges several lower control arms of automobiles on several test components, forming a structure as shown in the figure. Figure 2As shown in the diagram, the cylinder 32 is then controlled to operate, causing its extension and retraction ends to periodically extend and retract. During this process, the cylinder 32 drives the first rack 33 to reciprocate. When the first rack 33 reciprocates, it drives the gear 511 to continuously rotate forward and backward, which in turn causes the first shaft 51 to drive the rotating disk 52 to continuously rotate forward and backward. When the rotating disk 52 rotates forward and backward, several horizontal plates 53 move accordingly. When the horizontal plate 53 moves in one direction, it pushes the connecting rod 451, causing the connecting rod 451 to drive the swing plate 45 to move. Conversely, when the horizontal plate 53 moves in another direction, it no longer pushes the connecting rod 451, and the swing plate 45 will return to its original position under the action of the tension spring. Based on the above process, during the operation of the cylinder 32, several horizontal plates 53 and several connecting rods 451 cooperate with each other to drive several swing plates 45 to continuously swing, thereby causing the lower control arm of the car to vibrate continuously. This allows for simultaneous strength testing of multiple lower control arms of the car, improving the working efficiency of the device.

[0036] Example 2: Based on Example 1, this example discloses a strength testing device for processing automotive lower control arms, such as... Figure 9 and Figure 10 As shown, a flipping assembly is provided on the mounting plate 3 for automatic disengagement of the lower swing arm. The flipping assembly includes a second shaft 61 and several transmission rods 62. The second shaft 61 is rotatably mounted at the center of the top surface of the mounting plate 3. A gear 611 is arranged on the second shaft 61, and the gear 611 is connected to the second shaft 61 through a one-way bearing 612. Several transmission rods 62 are rotatably mounted on the mounting plate 3 and are arranged in a circumferential array around the second shaft 61. A first bevel gear 63 is fixedly sleeved on the second shaft 61. A second bevel gear 64 is fixedly sleeved on each transmission rod 62, and several second bevel gears 64 mesh with the first bevel gear 63. A gear 621 is fixedly sleeved on each transmission rod 62, and several gears 621 mesh with several gears 421 respectively.

[0037] A rotating assembly is provided on the mounting plate 3. The rotating assembly is used to drive several transmission rods 62 to rotate. The rotating assembly includes a slide rail 71, which is fixed to the top surface of the mounting plate 3 by two support rods. A slider 72 is slidably mounted on the slide rail 71. A second rack 73 is fixed to the side of the slider 72 and meshes with a gear 611. Several slots 731 are opened on the top surface of the second rack 73. A connecting rod 74 is also fixed to the side of the slider 72. The connecting rod 74 has a U-shaped structure. The end of the connecting rod 74 away from the slider 72 extends to the bottom of the mounting plate 3. Several sleeve plates 741 are fixedly mounted on the connecting rod 74. The sleeve plates 741 are distributed in a linear array. A fixing block 742 is fixed on the connecting rod 74.

[0038] The mounting plate 3 is equipped with a positioning component and a pushing component. The positioning component is used to lock the position of the second rack 73, and the pushing component is used to control the movement of the second rack 73. The positioning component includes a bracket 81, which is fixed to the top surface of the mounting plate 3. A first slide rod 82 is slidably mounted on the bracket 81. A locking plate 83 is fixed to the bottom end of the first slide rod 82. The locking plate 83 is provided with an inclined surface. In the initial state, the locking plate 83 is engaged in one of the slots 731. The shape of the locking plate 83 is adapted to the slot 731. When the locking plate 83 is engaged in the slot 731, the side of the locking plate 83 is in contact with the groove wall of the slot 731. The locking plate 83 and the bracket 81 are connected by a first spring 84.

[0039] The pushing assembly includes a side plate 91, which is fixed to the side of the first rack 33. A second slide rod 92 is slidably disposed on the side plate 91. A push block 94 is fixed to the bottom end of the second slide rod 92. The push block 94 is provided with an inclined surface, and the push block 94 is connected to the side plate 91 by a second spring 93. In the initial state, the push block 94 is located between two adjacent sleeve plates 741.

[0040] A reset assembly is provided in the groove 31 to control the reset of the second rack 73. The reset assembly includes a cylinder 101 and a rod 102. The cylinder 101 is fixed in the groove 31, and the rod 102 slides in the cylinder 101. One end of the rod 102 extends to the outside of the cylinder 101 and is positioned directly opposite the fixing block 742. The rod 102 and the cylinder 101 are connected by a third spring 103. Under the elastic force of the third spring 103, the rod 102 always tends to extend out of the cylinder 101.

[0041] The implementation principle of this embodiment is as follows: The strength testing device proposed in this invention can not only test several lower control arms of automobiles, but also has the function of quickly removing several lower control arms of automobiles. Specifically, during the test, the first rack 33 reciprocates, and drives the push block 94 to reciprocate through the side plate 91 and the second slide rod 92. Figure 5 and Figure 6As shown, when the push block 94 moves forward, it pushes the corresponding sleeve 741, causing the sleeve 741 to move the connecting rod 74. When the connecting rod 74 moves, the slider 72 and the second rack 73 move accordingly. When the push block 94 moves in the opposite direction, the inclined surface of the push block 94 presses against the corresponding sleeve 741. Under the action of the inclined surface, the push block 94 moves upward and presses the third spring 103. When the push block 94 is misaligned with the corresponding sleeve 741, the push block 94 resets under the action of the third spring 103. Subsequently, the push block 94 moves forward again and pushes the connecting rod 74 again through the sleeve 741. At the same time, for the positioning component, when the second rack 73 is in the push block... When pushed by the first spring 84, the second rack 73 can press the inclined surface of the clamping plate 83, causing the clamping plate 83 to move upward. The second rack 73 has several slots 731. When the slots 731 move to the position directly opposite the clamping plate 83, the clamping plate 83 will be locked in the corresponding slots 731 under the action of the first spring 84. At this time, the clamping plate 83 and the corresponding slots 731 together fix the second rack 73. Under the cooperation of the clamping plate 83 and the slots 731, the second rack 73 can only move in one direction and cannot move in the opposite direction. In summary, under the cooperation of the positioning component and the pushing component, the second rack 73 will intermittently move in the forward direction during the test.

[0042] When the second rack 73 moves forward, it meshes with the third gear 611 and drives the third gear 611 to rotate forward. When the third gear 611 rotates forward, its rotation direction is opposite to the locking direction of the one-way bearing 612. Therefore, the third gear 611 does not drive the second shaft 61 to rotate through the one-way bearing 612; that is, the third gear 611 rotates while the second shaft 61 remains stationary. Simultaneously, when the connecting rod 74 moves, its fixed block 742 moves accordingly and pushes the rod body 102, causing the rod body 102 to retract into the cylinder 101. During this process, the rod body 102 compresses the third spring 103, causing the third spring 103 to compress and store force. After the test, the operator pulls up the first sliding rod 82, causing the first sliding rod 82 to drive the clamping plate 83 upward until the clamping plate 83 separates from the second rack 73. Constrained by the clamping plate 83, the second rack 73 can move in the opposite direction. At this time, under the elastic force of the third spring 103, the rod 102 will push the fixed block 742 to move, so that the fixed block 742 drives the connecting rod 74 to reset. When the connecting rod 74 moves, it drives the second rack 73 to move in the opposite direction through the slider 72. When the second rack 73 moves in the opposite direction, it also meshes with the gear 611, so that the gear 611 rotates in the opposite direction. In this process, the rotation direction of the gear 611 is the same as the locking direction of the one-way bearing 612. Therefore, the gear 611 can drive the second shaft 61 to rotate through the one-way bearing 612. When the second shaft 61 rotates, it drives the first bevel gear 63 to rotate, which in turn causes several second bevel gears 64 to rotate synchronously. When several second bevel gears 64 rotate, they can drive several transmission rods 62 to rotate.

[0043] For the transmission rod 62, when the transmission rod 62 rotates, it can drive the rotating shaft 42 to rotate through the meshing gear 1 421 and gear 4 621. It should be noted that during the process of the second rack 73 resetting and meshing with gear 3 611, several rotating shafts 42 rotate exactly 180°, which allows several lower control arms to flip synchronously and finally fall naturally into the base 1 under the action of gravity, realizing the automatic disassembly of several car lower control arms. Furthermore, a soft pad can be laid in the base 1 to avoid damage when the lower control arms fall.

[0044] In summary, the automatic disassembly function of the present invention relies on an energy storage-locking-release cycle. During the testing phase, the reciprocating motion of the cylinder 32 continuously stores energy for the third spring 103 in the reset assembly by pushing the component. At the same time, the positioning component ensures that the second rack 73 can only move in one direction, so that the gear 611 rotates without driving the flipping component. After the test, the locking of the positioning component is manually released, and the stored energy of the third spring 103 is released instantly, driving the second rack 73 to move in the opposite direction. At this time, the one-way bearing 612 is locked, and the power is transmitted to the flipping component to complete the 180° flipping action.

[0045] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A strength testing device for processing automotive lower control arms, characterized in that, Includes a base (1), and an mounting plate (3) is provided on the top of the base (1). The mounting plate (3) is connected to the base (1) by two vertical rods (2). A groove (31) is provided on the mounting plate (3). A cylinder (32) is installed on the bottom surface of the mounting plate (3). A first rack (33) is fixed to the telescopic end of the cylinder (32). Several test components are provided on the mounting plate (3). The test components are arranged in a circumferential array around the center position of the mounting plate (3). A driving component is provided on the bottom surface of the mounting plate (3) for driving the test components to run. The test assembly includes a fixed frame (41) and a connecting frame (43). The fixed frame (41) is fixed on the mounting plate (3). The connecting frame (43) and the fixed frame (41) are connected by a rotating shaft (42). One end of the rotating shaft (42) is fixed on the connecting frame (43), and the other end is rotatably mounted on the fixed frame (41). A gear (421) is fixedly sleeved on the rotating shaft (42). A fixed plate (44) is fixed on the connecting frame (43). A first positioning rod (441) is fixed on the top surface of the fixed plate (44), and a fixed shaft (442) is fixed on the bottom surface. A swing plate (45) is rotatably sleeved on the fixed shaft (442). A connecting rod (451) is fixed on the end of the swing plate (45) away from the fixed shaft (442). A second positioning rod (452) is fixed on the top surface of the swing plate (45). The fixed plate (44) and the swing plate (45) are connected by a torsion spring (46).

2. The strength testing device for processing automotive lower control arms according to claim 1, characterized in that, The drive assembly includes a first shaft (51), which is rotatably mounted at the center of the bottom surface of the mounting plate (3). A rotating disk (52) is fixedly sleeved on the first shaft (51). Several horizontal plates (53) are fixed on the outer circumference of the rotating disk (52). The several horizontal plates (53) are respectively positioned opposite several connecting rods (451). A gear II (511) is fixedly sleeved on the first shaft (51), and the gear II (511) meshes with the first rack (33).

3. The strength testing device for automobile lower control arm processing according to claim 1, characterized in that, The mounting plate (3) is provided with a flipping component for automatic disengagement of the lower swing arm. The flipping component includes several transmission rods (62). The mounting plate (3) is provided with a rotating component for driving several transmission rods (62) to rotate. The rotating component includes a second rack (73). The mounting plate (3) is provided with a positioning component and a pushing component. The positioning component is used to lock the position of the second rack (73). The pushing component is used to push the second rack (73) to move. The groove (31) is provided with a reset component for driving the second rack (73) to reset after the test.

4. The strength testing device for processing automotive lower control arms according to claim 3, characterized in that, The flipping assembly also includes a second shaft (61), which is rotatably mounted at the center of the top surface of the mounting plate (3). A gear three (611) is arranged on the second shaft (61), and the gear three (611) is connected to the second shaft (61) through a one-way bearing (612). Several transmission rods (62) are rotatably mounted on the mounting plate (3). Several transmission rods (62) are arranged in a circumferential array around the second shaft (61). A first bevel gear (63) is fixedly sleeved on the second shaft (61). A second bevel gear (64) is fixedly sleeved on each transmission rod (62). Several second bevel gears (64) mesh with the first bevel gear (63). A gear four (621) is fixedly sleeved on each transmission rod (62). Several gear fours (621) mesh with several gear ones (421).

5. The strength testing device for processing automotive lower control arms according to claim 4, characterized in that, The rotating assembly also includes a slide rail (71), which is fixed to the top surface of the mounting plate (3) by two support rods. A slider (72) is slidably arranged on the slide rail (71). The second rack (73) is fixed to the side of the slider (72) and meshes with the gear three (611). The top surface of the second rack (73) is provided with several slots (731). A connecting rod (74) is also fixed to the side of the slider (72). The connecting rod (74) has a U-shaped structure. The end of the connecting rod (74) away from the slider (72) extends to the bottom of the mounting plate (3). Several sleeve plates (741) are fixedly sleeved on the connecting rod (74). The sleeve plates (741) are arranged in a linear array. A fixing block (742) is fixed on the connecting rod (74).

6. The strength testing device for processing automotive lower control arms according to claim 5, characterized in that, The positioning component includes a bracket (81) fixed on the top surface of the mounting plate (3). A first slide rod (82) is slidably disposed on the bracket (81). A locking plate (83) is fixed at the bottom end of the first slide rod (82). An inclined surface is provided on the locking plate (83). The locking plate (83) and the bracket (81) are connected by a first spring (84).

7. The strength testing device for processing automotive lower control arms according to claim 6, characterized in that, The shape of the card plate (83) is adapted to the slot (731). When the card plate (83) is inserted into the slot (731), the side of the card plate (83) fits against the groove wall of the slot (731).

8. The strength testing device for processing automotive lower control arms according to claim 7, characterized in that, The pushing assembly includes a side plate (91) fixed to the side of the first rack (33). A second slide rod (92) is slidably disposed on the side plate (91). A push block (94) is fixed to the bottom end of the second slide rod (92). An inclined surface is disposed on the push block (94), and the push block (94) is connected to the side plate (91) by a second spring (93).

9. A strength testing device for processing automotive lower control arms according to claim 8, characterized in that, The reset assembly includes a cylinder (101) and a rod (102). The cylinder (101) is fixed in a groove (31), and the rod (102) slides in the cylinder (101). One end of the rod (102) extends to the outside of the cylinder (101) and is positioned opposite the fixing block (742). The rod (102) and the cylinder (101) are connected by a third spring (103).

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