Strength detection method for automobile mounting bracket

Abstract

The invention discloses a method for detecting the strength of an automobile mounting bracket. The method comprises the following steps: mounting a lower impact mechanism, mounting a clamping mechanism, mounting an upper impact mechanism and detecting the automobile mounting bracket. The detection method is simple in step, the automobile mounting support can be stably clamped and fixed, the strength detection requirements of the upper side face and the lower side face can be met, the automobile mounting support does not need to be overturned, and the strength detection efficiency is greatly improved.

Description

Technical Field

[0001] The invention relates to a strength detection method for an automobile mounting bracket. Background Art

[0002] New energy vehicles refer to vehicles that use electricity as a driving force to enable normal driving. As batteries are the main power source for new energy vehicles, the mounting brackets used for batteries need to have strong support capabilities. Car batteries are heavy, and during driving, the car will shake due to road conditions, causing the battery to impact the mounting bracket. If the mounting bracket cannot withstand the impact, it will deform, causing the car power to be cut off and unable to be used normally. Therefore, it is necessary to perform strength testing on the mounting bracket.

[0003] In the prior art, when performing strength testing on a vehicle mounting bracket, a flipping mechanism needs to be added to meet the testing requirements, which not only makes the structure complicated, but also increases the difficulty of testing and easily leads to inaccurate positioning. Summary of the invention

[0004] The purpose of the present invention is to provide a technical solution for a strength detection method of an automobile mounting bracket in view of the deficiencies in the prior art, which can not only stably clamp and fix the automobile mounting bracket, but also meet the strength detection requirements of the upper and lower sides without flipping the automobile mounting bracket, thereby greatly improving the efficiency of strength detection.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] The strength testing method of the automobile mounting bracket is characterized by comprising the following steps:

[0007] S1. Installation of lower impact mechanism

[0008] a. First, select a suitable test bench, install the support legs symmetrically along the bottom surface of the test bench, ensure that the length of each support leg is consistent, and open several through holes on the test bench;

[0009] b. Then install a fixing plate horizontally between the supporting legs and below the test bench, and install the impact mechanism on the fixing plate at a position corresponding to the through hole;

[0010] c. Then install the control box on the side of one of the supporting legs;

[0011] S2. Clamping mechanism installation

[0012] The installation position of the clamping mechanism is determined according to the size of the test bench. The clamping mechanism is distributed in a ring shape. Each clamping mechanism includes an L-shaped column, an upper clamping assembly and a lower clamping assembly. The L-shaped column is provided with a first guide groove and a second guide groove parallel to each other. The upper clamping assembly is driven by the upper pushing assembly to move up and down along the first guide groove and the second guide groove of the L-shaped column. The lower clamping assembly is driven by the lower pushing assembly to move up and down along the first guide groove and the second guide groove of the L-shaped column. The upper clamping assembly and the lower clamping assembly cooperate to achieve clamping and fixing of the automobile mounting bracket;

[0013] S3. Installation of upper impact mechanism

[0014] a. First, install the lifting mechanism according to the distance between two adjacent clamping mechanisms on the same side;

[0015] b. Then install the lifting plate between the two lifting mechanisms to keep the lifting plate level;

[0016] c. Then, an upper impact mechanism is installed on the lifting plate above the lower impact mechanism;

[0017] S4, Car mounting bracket detection

[0018] a. First, the lifting plate is driven upward by the lifting mechanism, so that the lifting plate drives the upper impact mechanism to move upward to the set position synchronously, and at the same time, the upper clamping assembly of the adjustment mechanism is raised along the L-shaped column to the required height position;

[0019] b. Then adjust the height position of the lower clamping assembly of the clamping mechanism until all the lower clamping assemblies are at the required height position, and then place the automobile mounting bracket to be tested on each lower clamping assembly so that each hole position on the automobile mounting bracket is limited on the lower clamping assembly;

[0020] c. Then lower the height position of the upper clamping assembly and start the upper clamping assembly at the same time, so that the upper clamping assembly and the lower clamping assembly are firmly matched;

[0021] d. Finally, start the upper impact mechanism or the lower impact mechanism to perform impact testing on the vehicle mounting bracket to be tested.

[0022] The detection method has simple steps and can not only stably clamp and fix the automobile mounting bracket, but also meet the strength detection requirements of the upper and lower sides without turning over the automobile mounting bracket, thereby greatly improving the efficiency of the strength detection.

[0023] Furthermore, the lower impact mechanism includes a first lower hydraulic cylinder and a first impact plate. The first lower hydraulic cylinder is located directly below the through hole. The first lower hydraulic cylinder is connected to the first impact plate through a first piston rod. The first impact plate matches the through hole. The first lower hydraulic cylinder can drive the first impact plate to impact the automobile mounting bracket from bottom to top through the first piston rod to detect the strength of the automobile mounting bracket. When not working, the first impact plate can be retracted into the through hole.

[0024] Furthermore, the upper clamping assembly includes an upper mounting plate, a motor, a first boss and a screw. The motor and the first boss are respectively arranged on the top and bottom surfaces of the upper mounting plate. The screw vertically penetrates the first boss and the upper mounting plate and is connected to the output shaft of the motor. The lower clamping assembly includes a lower mounting plate, a second boss and a positioning sleeve. The positioning sleeve is connected to the lower mounting plate through the second boss. The positioning sleeve is located directly below the screw. An internal thread is provided in the positioning sleeve, and the internal thread matches the screw. The first boss and the upper mounting plate improve the stability and reliability of the installation of the motor and the screw. The second boss and the lower mounting plate improve the stability and reliability of the installation of the positioning sleeve. When the upper mounting plate is close to the lower mounting plate, the screw is driven to rotate by the motor, so that the screw is matched with the positioning sleeve, and the automobile mounting bracket is clamped and fixed by the first boss and the second boss, which can meet the strength detection requirements of the upper and lower sides of the automobile mounting bracket and is flexible and convenient to use.

[0025] Furthermore, the upper pushing assembly includes a third hydraulic cylinder, a fourth piston rod, a first guide rod and a second guide rod. The third hydraulic cylinder is fixedly connected to the L-shaped column through a support plate. The first guide rod and the second guide rod are respectively arranged on two adjacent side surfaces of the upper mounting clamping plate. The first guide rod and the second guide rod are respectively matched with the first guide groove and the second guide groove. The first guide rod and the second guide rod are fixedly connected by an L-shaped connecting rod. A first booster plate is arranged on the L-shaped connecting rod. The first booster plate is connected to the third hydraulic cylinder through the fourth piston rod. The first booster plate can be driven up and down by the third hydraulic cylinder via the fourth piston rod, and then can be moved up and down along the first guide groove and the second guide groove respectively through the first guide rod and the second guide rod, so as to meet the height adjustment requirement of the upper clamping assembly. The support plate improves the stability and reliability of the installation of the third hydraulic cylinder. The first guide rod, the second guide rod, the first guide groove and the second guide groove improve the stability and reliability of the upper clamping assembly during movement, so as to further improve the clamping stability of the automobile mounting bracket.

[0026] Furthermore, the lower pushing assembly includes a fourth hydraulic cylinder, a fifth piston rod, a first guide rod and a second guide rod. The fourth hydraulic cylinder is fixedly connected to the inspection table. The first guide rod and the second guide rod are respectively arranged on two adjacent sides of the lower mounting clamping plate. The first guide rod and the second guide rod are respectively matched with the first guide groove and the second guide groove. The first guide rod and the second guide rod are fixedly connected by an L-shaped connecting rod. A second booster plate is provided on the L-shaped connecting rod. The second booster plate is connected to the fourth hydraulic cylinder through the fifth piston rod. The second booster plate is driven up and down by the fourth hydraulic cylinder via the fifth piston rod, and then can be moved up and down along the first guide groove and the second guide groove respectively through the first guide rod and the second guide rod, thereby meeting the height adjustment requirement of the lower clamping assembly. The first guide rod, the second guide rod, the first guide groove and the second guide groove improve the stability and reliability of the lower clamping assembly during movement, and further improve the clamping stability of the automobile mounting bracket.

[0027] Furthermore, the upper impact mechanism includes a first upper hydraulic cylinder and a second impact plate. The first upper hydraulic cylinder is fixedly connected to the lifting plate, and the second impact plate is connected to the first upper hydraulic cylinder through a second piston rod. The second impact plate is driven to move by the first upper hydraulic cylinder via the second piston rod to achieve impact on the automobile mounting bracket from top to bottom, thereby detecting the strength of the automobile mounting bracket.

[0028] Furthermore, the lifting mechanism includes a cross beam, a second hydraulic cylinder and a third piston rod. The cross beam is fixedly connected between the tops of the two clamping mechanisms. The second hydraulic cylinder is arranged on the cross beam. The second hydraulic cylinder is connected to the lifting plate through the third piston rod. The lifting plate can be driven up and down by the second hydraulic cylinder through the third piston rod to adjust the entire height position of the upper impact mechanism.

[0029] The present invention has the following beneficial effects due to the adoption of the above technical solution:

[0030] 1. The detection method of the present invention has simple steps, which can not only stably clamp and fix the automobile mounting bracket, but also meet the strength detection requirements of the upper and lower sides, without turning over the automobile mounting bracket, thereby greatly improving the efficiency of strength detection.

[0031] 2. The first boss and the upper clamping plate improve the stability and reliability of the installation of the motor and the screw, and the second boss and the lower clamping plate improve the stability and reliability of the installation of the positioning sleeve. When the upper clamping plate is close to the lower clamping plate, the screw is driven to rotate by the motor, so that the screw and the positioning sleeve are matched and connected, and the automobile mounting bracket is clamped and fixed by the first boss and the second boss, which can meet the strength detection requirements of the upper and lower sides of the automobile mounting bracket, and is flexible and convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The present invention will be further described below in conjunction with the accompanying drawings:

[0033] Figure 1 It is a flow chart of the strength detection method of the automobile mounting bracket of the present invention;

[0034] Figure 2 It is a structural schematic diagram of the strength detection device in the present invention;

[0035] Figure 3 It is a structural schematic diagram of the clamping mechanism in the present invention;

[0036] Figure 4 for Figure 3 Structural schematic diagram of the middle A direction;

[0037] Figure 5 It is a schematic diagram of the structure of the upper clamping assembly and the lower clamping assembly in the present invention.

[0038] In the figure: 1-testing table; 2-supporting foot; 3-control box; 4-fixing plate; 5-first lower hydraulic cylinder; 6-first impact plate; 7-first piston rod; 8-through hole; 9-clamping mechanism; 10-lifting plate; 11-first upper hydraulic cylinder; 12-second impact plate; 13-second piston rod; 14-crossbeam; 15-second hydraulic cylinder; 16-third piston rod; 17-L-shaped column; 18-first guide groove; 19-second guide groove; 20-support Support plate; 21-third hydraulic cylinder; 22-fourth piston rod; 23-upper clamping assembly; 24-fourth hydraulic cylinder; 25-fifth piston rod; 26-lower clamping assembly; 27-upper clamping plate; 28-lower clamping plate; 29-first boss; 30-screw; 31-motor; 32-second boss; 33-positioning sleeve; 34-first guide rod; 35-second guide rod; 36-L-shaped connecting rod; 37-first booster plate; 38-second booster plate. DETAILED DESCRIPTION

[0039] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0040] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only embodiments of a part of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0041] like Figures 1 to 5 As shown, the strength detection method of the automobile mounting bracket of the present invention comprises the following steps:

[0042] S1. Installation of lower impact mechanism

[0043] a. First, select a suitable test platform 1, install the support legs 2 symmetrically along the bottom surface of the test platform 1, ensure that the length of each support leg 2 is consistent, and open a number of through holes 8 on the test platform 1;

[0044] b. Then, a fixing plate 4 is horizontally installed between the supporting legs 2 and below the testing platform 1, and a lower impact mechanism is installed on the fixing plate 4 at a position corresponding to the through hole 8;

[0045] The lower impact mechanism includes a first lower hydraulic cylinder 5 and a first impact plate 6. The first lower hydraulic cylinder 5 is located directly below the through hole 8. The first lower hydraulic cylinder 5 is connected to the first impact plate 6 through a first piston rod 7. The first impact plate 6 matches the through hole 8. The first lower hydraulic cylinder 5 can drive the first impact plate 6 to impact the automobile mounting bracket from bottom to top through the first piston rod 7 to detect the strength of the automobile mounting bracket. When not working, the first impact plate 6 can be retracted into the through hole 8.

[0046] c. Then install the control box 3 on the side of one of the supporting legs 2;

[0047] S2. Installation of clamping mechanism 9

[0048] The installation position of the clamping mechanism 9 is determined according to the size of the test bench 1. The clamping mechanism 9 is distributed in a ring shape. Each clamping mechanism 9 includes an L-shaped column 17, an upper clamping assembly 23 and a lower clamping assembly 26. The L-shaped column 17 is provided with a first guide groove 18 and a second guide groove 19 parallel to each other. The upper clamping assembly 23 is driven by the upper push assembly to move up and down along the first guide groove 18 and the second guide groove 19 of the L-shaped column 17. The lower clamping assembly 26 is driven by the lower push assembly to move up and down along the first guide groove 18 and the second guide groove 19 of the L-shaped column 17. The upper clamping assembly 23 and the lower clamping assembly 26 cooperate to achieve clamping and fixing of the automobile mounting bracket;

[0049] The upper clamping assembly 23 includes an upper clamping plate 27, a motor 31, a first boss 29 and a screw 30. The motor 31 and the first boss 29 are respectively arranged on the top surface and the bottom surface of the upper clamping plate 27. The screw 30 vertically penetrates the first boss 29 and the upper clamping plate 27 and is connected to the output shaft of the motor 31. The lower clamping assembly 26 includes a lower clamping plate 28, a second boss 32 and a positioning sleeve 33. The positioning sleeve 33 is connected to the lower clamping plate 28 through the second boss 32. The positioning sleeve 33 is located directly below the screw 30. An internal thread is arranged in the positioning sleeve 33, and the internal thread is connected to the screw. The first boss 29 and the upper clamping plate 27 improve the stability and reliability of the installation of the motor 31 and the screw 30, and the second boss 32 and the lower clamping plate 28 improve the stability and reliability of the installation of the positioning sleeve 33. When the upper clamping plate 27 is close to the lower clamping plate 28, the screw 30 is driven to rotate by the motor 31, so that the screw 30 is matched with the positioning sleeve 33, and the automobile mounting bracket is clamped and fixed by the first boss 29 and the second boss 32, which can meet the strength detection requirements of the upper and lower sides of the automobile mounting bracket, and is flexible and convenient to use.

[0050] The upper push assembly includes a third hydraulic cylinder 21, a fourth piston rod 22, a first guide rod 34 and a second guide rod 35. The third hydraulic cylinder 21 is fixedly connected to the L-shaped column 17 through the support plate 20. The first guide rod 34 and the second guide rod 35 are respectively arranged on two adjacent sides of the upper clamping plate 27. The first guide rod 34 and the second guide rod 35 are matched with the first guide groove 18 and the second guide groove 19 respectively. The first guide rod 34 and the second guide rod 35 are fixedly connected by an L-shaped connecting rod 36. The L-shaped connecting rod 36 is provided with a first booster plate 37. The first booster plate 37 is connected to the upper clamping plate 27 through the fourth piston rod 22. In the third hydraulic cylinder 21; the first booster plate 37 can be driven to move up and down through the third hydraulic cylinder 21 via the fourth piston rod 22, and then can be moved up and down along the first guide groove 18 and the second guide groove 19 respectively through the first guide rod 34 and the second guide rod 35, to meet the height adjustment requirements of the upper clamping assembly 23, the support plate 20 improves the stability and reliability of the installation of the third hydraulic cylinder 21, the first guide rod 34, the second guide rod 35, the first guide groove 18 and the second guide groove 19 improve the stability and reliability of the upper clamping assembly 23 during movement, and further improves the clamping stability of the automobile mounting bracket.

[0051] The lower push assembly includes a fourth hydraulic cylinder 24, a fifth piston rod 25, a first guide rod 34 and a second guide rod 35. The fourth hydraulic cylinder 24 is fixedly connected to the detection platform 1. The first guide rod 34 and the second guide rod 35 are respectively arranged on two adjacent sides of the lower clamping plate 28. The first guide rod 34 and the second guide rod 35 are matched with the first guide groove 18 and the second guide groove 19 respectively. The first guide rod 34 and the second guide rod 35 are fixedly connected by an L-shaped connecting rod 36. The L-shaped connecting rod 36 is provided with a second booster plate 38. The second booster plate 38 is connected to the lower clamping plate 28. The fifth piston rod 25 is connected to the fourth hydraulic cylinder 24; the second booster plate 38 is driven to move up and down through the fourth hydraulic cylinder 24 and the fifth piston rod 25, and then can be moved up and down along the first guide groove 18 and the second guide groove 19 respectively through the first guide rod 34 and the second guide rod 35, so as to meet the height adjustment requirement of the lower clamping assembly 26. The first guide rod 34, the second guide rod 35, the first guide groove 18 and the second guide groove 19 improve the stability and reliability of the lower clamping assembly 26 during movement, and further improve the clamping stability of the automobile mounting bracket.

[0052] S3. Installation of upper impact mechanism

[0053] a. First, install the lifting mechanism according to the distance between two adjacent clamping mechanisms 9 on the same side;

[0054] The lifting mechanism includes a cross beam 14, a second hydraulic cylinder 15 and a third piston rod 16. The cross beam 14 is fixedly connected between the tops of the two clamping mechanisms 9. The second hydraulic cylinder 15 is arranged on the cross beam 14. The second hydraulic cylinder 15 is connected to the lifting plate 10 through the third piston rod 16. The lifting plate 10 can be driven up and down by the second hydraulic cylinder 15 through the third piston rod 16 to adjust the entire height position of the upper impact mechanism.

[0055] b. Then install the lifting plate 10 between the two lifting mechanisms to keep the lifting plate 10 horizontal;

[0056] c. Then, an upper impact mechanism is installed on the lifting plate 10 above the lower impact mechanism;

[0057] The upper impact mechanism includes a first upper hydraulic cylinder 11 and a second impact plate 12. The first upper hydraulic cylinder 11 is fixedly connected to the lifting plate 10. The second impact plate 12 is connected to the first upper hydraulic cylinder 11 through a second piston rod 13. The second impact plate 12 is driven to move by the first upper hydraulic cylinder 11 through the second piston rod 13 to achieve impact on the automobile mounting bracket from top to bottom and detect the strength of the automobile mounting bracket.

[0058] S4, Car mounting bracket detection

[0059] a. First, the lifting plate 10 is driven upward by the lifting mechanism, so that the lifting plate 10 drives the upper impact mechanism to move upward to the set position synchronously, and at the same time, the upper clamping assembly 23 of the adjustment mechanism is raised along the L-shaped column 17 to the required height position;

[0060] b. Then adjust the height position of the lower clamping assembly 26 of the clamping mechanism 9 until all the lower clamping assemblies 26 are at the required height position, and then place the automobile mounting bracket to be tested on each lower clamping assembly 26 so that each hole position on the automobile mounting bracket is limited on the lower clamping assembly 26;

[0061] c. Then lower the height position of the upper clamping assembly 23 and start the upper clamping assembly 23 at the same time, so that the upper clamping assembly 23 and the lower clamping assembly 26 are firmly matched;

[0062] d. Finally, start the upper impact mechanism or the lower impact mechanism to perform impact testing on the vehicle mounting bracket to be tested.

[0063] The detection method has simple steps and can not only stably clamp and fix the automobile mounting bracket, but also meet the strength detection requirements of the upper and lower sides without turning over the automobile mounting bracket, thereby greatly improving the efficiency of the strength detection.

[0064] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the present invention to achieve basically the same technical effects are all included in the protection scope of the present invention.

Claims

1. A strength testing method for a vehicle mounting bracket, characterized in that The steps include: S1. Installation of lower impact mechanism a. First, select a suitable test bench, install the support legs symmetrically along the bottom surface of the test bench, ensure that the length of each support leg is consistent, and open several through holes on the test bench; b. Then install a fixing plate horizontally between the supporting legs and below the test bench, and install the impact mechanism on the fixing plate at a position corresponding to the through hole; c. Then install the control box on the side of one of the supporting legs; S2. Clamping mechanism installation The installation position of the clamping mechanism is determined according to the size of the inspection table. The clamping mechanism is distributed in a ring shape. Each clamping mechanism includes an L-shaped column, an upper clamping assembly and a lower clamping assembly. The L-shaped column is provided with a first guide groove and a second guide groove parallel to each other. The upper clamping assembly is driven by the upper pushing assembly to move up and down along the first guide groove and the second guide groove of the L-shaped column. The lower clamping assembly is driven by the lower pushing assembly to move up and down along the first guide groove and the second guide groove of the L-shaped column. The upper clamping assembly and the lower clamping assembly cooperate to achieve clamping and fixing of the automobile mounting bracket; S3. Installation of upper impact mechanism a. First, install the lifting mechanism according to the distance between two adjacent clamping mechanisms on the same side; b. Then install the lifting plate between the two lifting mechanisms to keep the lifting plate level; c. Then, an upper impact mechanism is installed on the lifting plate above the lower impact mechanism; S4, Car mounting bracket detection a. First, the lifting plate is driven upward by the lifting mechanism, so that the lifting plate drives the upper impact mechanism to move upward to the set position synchronously, and at the same time, the upper clamping assembly of the adjustment mechanism is raised along the L-shaped column to the required height position; b. Then adjust the height position of the lower clamping assembly of the clamping mechanism until all the lower clamping assemblies are at the required height position, and then place the automobile mounting bracket to be tested on each lower clamping assembly so that each hole position on the automobile mounting bracket is limited on the lower clamping assembly; c. Then lower the height position of the upper clamping assembly and start the upper clamping assembly at the same time, so that the upper clamping assembly and the lower clamping assembly are firmly matched; d. Finally, start the upper impact mechanism or the lower impact mechanism to perform impact testing on the vehicle mounting bracket to be tested.

2. The strength detection method of the automobile mounting bracket according to claim 1, characterized in that: The lower impact mechanism includes a first lower hydraulic cylinder and a first impact plate. The first lower hydraulic cylinder is located directly below the through hole. The first lower hydraulic cylinder is connected to the first impact plate via a first piston rod. The first impact plate matches the through hole.

3. The strength detection method of the automobile mounting bracket according to claim 1, characterized in that: The upper clamping assembly includes an upper clamping plate, a motor, a first boss and a screw rod. The motor and the first boss are respectively arranged on the top and bottom surfaces of the upper clamping plate. The screw rod vertically penetrates the first boss and the upper clamping plate and is connected to the output shaft of the motor. The lower clamping assembly includes a lower clamping plate, a second boss and a positioning sleeve. The positioning sleeve is connected to the lower clamping plate through the second boss. The positioning sleeve is located directly below the screw rod. An internal thread is provided in the positioning sleeve, and the internal thread matches the screw rod.

4. The strength detection method of the automobile mounting bracket according to claim 3, characterized in that: The upper pushing assembly includes a third hydraulic cylinder, a fourth piston rod, a first guide rod and a second guide rod. The third hydraulic cylinder is fixedly connected to the L-shaped column through a support plate. The first guide rod and the second guide rod are respectively arranged on two adjacent side surfaces of the upper clamping plate. The first guide rod and the second guide rod are respectively matched with the first guide groove and the second guide groove. The first guide rod and the second guide rod are fixedly connected by an L-shaped connecting rod. The L-shaped connecting rod is provided with a first booster plate, and the first booster plate is connected to the third hydraulic cylinder through the fourth piston rod.

5. The strength testing method of the automobile mounting bracket according to claim 4, characterized in that: The lower pushing assembly includes a fourth hydraulic cylinder, a fifth piston rod, the first guide rod and the second guide rod. The fourth hydraulic cylinder is fixedly connected to the detection platform. The first guide rod and the second guide rod are respectively arranged on two adjacent side surfaces of the lower clamping plate. The first guide rod and the second guide rod are respectively matched with the first guide groove and the second guide groove. The first guide rod and the second guide rod are fixedly connected by the L-shaped connecting rod. The L-shaped connecting rod is provided with a second booster plate. The second booster plate is connected to the fourth hydraulic cylinder through the fifth piston rod.

6. The strength testing method of the automobile mounting bracket according to claim 1, characterized in that: The upper impact mechanism comprises a first upper hydraulic cylinder and a second impact plate, wherein the first upper hydraulic cylinder is fixedly connected to the lifting plate, and the second impact plate is connected to the first upper hydraulic cylinder via a second piston rod.

7. The strength testing method of the automobile mounting bracket according to claim 1, characterized in that: The lifting mechanism includes a crossbeam, a second hydraulic cylinder and a third piston rod. The crossbeam is fixedly connected between the tops of the two clamping mechanisms. The second hydraulic cylinder is arranged on the crossbeam. The second hydraulic cylinder is connected to the lifting plate through the third piston rod.

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