Tool and method for testing shearing force of automobile rear windshield bracket

Abstract

The invention relates to the technical field of shearing force testing, and particularly discloses an automobile rear windshield support shearing force testing tool which comprises a base, a first supporting rod, a mounting frame and a testing mechanism, the testing mechanism comprises an air cylinder, a push rod, a trigger mechanism and a force application assembly, the mounting frame is of a shell structure, and the air cylinder is arranged on one side of a shell at the upper end of the mounting frame; when the rear windshield support is bonded to the mounting frame, the air cylinder pushes the push rod to move, so that the shifting block is pushed to move towards the direction close to the mounting plate, the connecting shaft is pushed to move, the cam extends out of the upper end shell wall of the mounting frame, and the rear windshield support is bonded to the mounting frame. The upper edge of the rear windshield support makes contact with the bottom of the cam, after the rear windshield support is bonded and fixed, the air cylinder continues to push the shifting block to move in the direction close to the mounting plate, the push column drives the connecting shaft to rotate, and when the cam rotates, the cam provides shearing force for the rear windshield support.

Description

Technical Field

[0001] The invention relates to the technical field of shear force testing, and in particular to a shear force testing tool for a rear windshield bracket of an automobile and a testing method thereof. Background Art

[0002] In the process of automobile rear windshield production, processing and installation, in order to detect the product qualification rate, it is necessary to conduct a shear force test on the automobile rear windshield bracket. The existing test method is to use manual bending test, which is labor-intensive and easy to cause worker injuries. This method is inefficient and the detection is inaccurate, and there is a hidden danger of failure, which seriously affects the subsequent installation and use of automobile factories. It is not convenient to apply shear force to the windshield bracket through other pulling devices, and it is easy to cause damage to the windshield bracket. Therefore, a shear force test tool for automobile rear windshield bracket is needed. Summary of the invention

[0003] In order to solve the deficiencies of the prior art, the purpose of the present invention is to provide a shear force testing tool for a rear windshield bracket of an automobile and a testing method thereof.

[0004] In order to achieve the above technical objectives, the technical solution adopted by the present invention is as follows.

[0005] A shear force test tool for a rear windshield bracket of an automobile, comprising:

[0006] A base, a support rod, a mounting frame, and a testing mechanism. The mounting frame is arranged on the base through a support rod. The testing mechanism is arranged on the mounting frame and is close to the top of the mounting frame. The windshield bracket is bonded to the frame surface of the mounting frame through a sealant. The testing mechanism includes a cylinder, a push rod, a trigger mechanism, and a force-applying assembly. The mounting frame is a shell structure. The cylinder is arranged on one side of the upper end shell of the mounting frame. The push rod is horizontally fixedly connected to the end of the cylinder. The force-applying assembly is arranged in the upper end shell of the mounting frame. There are multiple groups of force-applying assemblies and they are evenly spaced along the length direction of the upper end shell of the mounting frame. A mounting plate is vertically arranged in the upper end shell of the mounting frame. The force-applying assembly includes a connecting shaft, a cam, and a limit plate. The connecting shaft horizontally passes through the plate surface of the mounting plate. The cam is arranged at the end of the connecting shaft. The cam passes through the upper end shell wall of the mounting frame. The limit plate is fixedly arranged on the wall of the connecting shaft. The mounting plate is between the limit plate and the cam. The trigger mechanism is arranged on the push rod, and the trigger mechanism is connected to the connecting shaft through transmission.

[0007] As a further improvement of the present technical solution, the trigger mechanism is provided with multiple groups and corresponds one-to-one with the multiple groups of force-applying components respectively. The trigger mechanism includes a shift block 1, a connecting column 1, a connecting sleeve 1, and a push column. The shift block 1 is located on one side of the push rod and close to the limit plate. One end of the connecting column 1 is connected to the wall of the shift block 1, and the other end of the connecting column 1 extends horizontally. Two connecting columns 1 are provided and are arranged in parallel. One end of the connecting sleeve 1 is fixedly connected to the wall of the push rod, and the other end of the connecting sleeve 1 is sleeved on the connecting column 1. A spring 1 is sleeved on the connecting column 1 and the connecting sleeve 1. One end of the spring 1 is connected to the wall of the push rod, and the other end of the spring 1 is connected to the wall of the shift block 1. The push column is vertically arranged at the bottom of the shift block 1, and the wall of the connecting shaft is provided with a spiral groove. The bottom end of the push column matches and extends into the spiral groove of the connecting shaft. A pressure sensor is provided on the arc surface of the cam.

[0008] As a further improvement of the present technical solution, a shift block 2 is arranged directly above the shift block 1, and the connection method between the shift block 2 and the shift block 1 is the same as the connection method between the push rod of the shift block 1. A guide groove 1 is provided on the shift block 2, and the guide groove 1 is arranged obliquely. A connecting plate is fixedly provided on the push rod, and a guide column 1 is vertically provided on the plate surface of the connecting plate. The guide column 1 is matched and sleeved in the guide groove 1. An avoidance groove is provided on the top of the upper end shell of the mounting frame, and the avoidance groove is parallel to the connecting axis. A push rod is vertically provided on the top of the shift block 2, and the push rod passes through the avoidance groove on the top of the upper end shell of the mounting frame.

[0009] As a further improvement of the present technical solution, a feedback mechanism is arranged at the top of the upper shell of the mounting frame, and the feedback mechanism includes a column, a load plate 1, a load plate 2, and a feedback assembly. The column is vertically arranged at the top of the upper shell of the mounting frame. Two columns are provided and are arranged in parallel. A baffle is arranged on the top of the column. The load plate 1 and the load plate 2 are sleeved on the column. The column is sleeved with a spring 2 and a spring 3. One end of the spring 2 contacts the plate surface of the load plate 1, and the other end of the spring 2 contacts the baffle at the top of the column. One end of the spring 3 contacts the plate surface of the load plate 2, and the other end of the spring 3 contacts the top of the upper shell of the mounting frame. A trigger rod is horizontally fixed at the top of the top rod. The trigger rod extends horizontally and extends between the load plate 1 and the load plate 2. The feedback assembly is arranged at the ends of the load plate 1 and the load plate 2.

[0010] As a further improvement of the present technical solution, a support rod 2 is fixedly provided at the end of the carrier plate 1, a dial and an image sensor are provided at the end of the support rod 2, the feedback assembly includes a support rod 3, a guide column 2, and an indicator rod, the support rod 3 is fixedly provided at the end of the carrier plate 2, the guide column 2 is vertically provided on the support rod 3, the indicator rod is rotatably provided at the end of the carrier plate 1, a guide groove 2 is provided on the indicator rod, and the guide column 2 is matchably sleeved in the guide groove 2 of the indicator rod.

[0011] As a further improvement of the present technical solution, a drainage channel is arranged inside the installation frame, and a water supply tank 1 and a water supply tank 2 are arranged on the base. The water supply tank 1 contains hot water, and the water supply tank 2 contains ice water. The water supply tank 1 is connected to the drainage channel through a connecting pipe 1, and the water supply tank 2 is connected to the drainage channel through a connecting pipe 2. Valve 1 and valve 2 are respectively arranged on connecting pipe 1 and connecting pipe 2, and water pumps are arranged on water supply tank 1 and water supply tank 2.

[0012] Compared with the prior art, the present invention has the following progress and advantages: during the use of the present invention, when the rear windshield bracket is bonded to the mounting frame, the upper edge of the rear windshield bracket contacts the bottom of the cam, which facilitates the alignment and installation of the rear windshield bracket. After the rear windshield bracket is bonded and fixed, the cam provides shear force to the rear windshield bracket. The shear force is provided to the rear windshield bracket by multiple groups of force applying components, so that the force conditions of multiple positions of the rear windshield bracket can be detected.

[0013] When a group of force-applying components applies force to cause the rear windshield bracket to shift or be damaged, the rear windshield bracket has no obstruction to the deflection of the cam of this group, the push rod and the shift block one move away from each other, the guide column one drives the shift block two to move downward, thereby driving the trigger rod to move downward, so that the bearing plate one and the bearing plate two move away from each other, and then the guide column two drives the indicator rod to deflect, and the image sensor detects the deflection of the indicator rod, indicating that a group of force-applying components causes the rear windshield bracket to shift or be damaged, and the pressure sensor on the cam reflects the magnitude of the shear force on the rear windshield bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0016] Figure 2 It is a schematic diagram of the coordination between the installation frame of the present invention and water supply tank 1 and water supply tank 2.

[0017] Figure 3 It is a schematic diagram of the testing mechanism of the present invention.

[0018] Figure 4 It is a schematic diagram of the cooperation between the trigger mechanism and the force-applying assembly of the present invention.

[0019] Figure 5 It is a schematic diagram of the force-applying component of the present invention.

[0020] Figure 6 It is a schematic diagram of the trigger mechanism of the present invention.

[0021] Figure 7 It is a schematic diagram of the feedback mechanism of the present invention.

[0022] Figure 8 Schematic diagram of the feedback component of the present invention.

[0023] The figure shows:

[0024] 10. Base; 110. Support rod 1; 120. Mounting frame; 121. Avoidance groove; 130. Water supply tank 1; 131. Connecting pipe 1; 132. Connecting pipe 2; 140. Water supply tank 2;

[0025] 20. Testing mechanism; 210. Cylinder; 220. Push rod; 221. Connecting plate; 222. Guide column 1; 230. Trigger mechanism; 231. Displacement block 1; 232. Connecting column 1; 233. Connecting sleeve 1; 234. Push rod; 235. Displacement block 2; 236. Guide groove 1; 237. Push rod; 238. Trigger rod; 240. Force application assembly; 241. Mounting plate; 242. Connecting shaft; 243. Cam; 244. Limiting plate; 245. Spiral groove;

[0026] 30. Feedback mechanism; 310. Column; 320. Carrying plate one; 330. Carrying plate two; 331. Support rod two; 332. Scale plate; 333. Image sensor; 340. Feedback assembly; 341. Support rod three; 342. Guide column two; 343. Indicator rod; 344. Guide slot two. DETAILED DESCRIPTION

[0027] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0028] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0029] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inside", "outside", etc. appear to indicate the orientation or position relationship, it is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0030] In the description of the present invention, unless otherwise clearly specified and limited, if the term "connection" or the like appears to indicate the connection relationship between components, the term should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two components or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] like Figure 1-Figure 8 As shown, a shear force test tool for a rear windshield bracket of an automobile comprises:

[0032] The base 10, the support rod 110, the mounting frame 120, and the test mechanism 20. The mounting frame 120 is arranged on the base 10 through the support rod 110. The test mechanism 20 is arranged on the mounting frame 120 and is close to the top of the mounting frame 120. The windshield bracket is bonded to the frame surface of the mounting frame 120 by a sealant. The test mechanism 20 includes a cylinder 210, a push rod 220, a trigger mechanism 230, and a force-applying assembly 240. The mounting frame 120 is a shell structure. The cylinder 210 is arranged on one side of the upper end shell of the mounting frame 120. The push rod 220 is horizontally fixedly connected to the end of the cylinder 210. The force-applying assembly 240 is arranged in the upper end shell of the mounting frame 120. 40 is provided with multiple groups and is evenly spaced along the length direction of the upper end shell of the mounting frame 120. A mounting plate 241 is vertically arranged in the upper end shell of the mounting frame 120. The force-applying component 240 includes a connecting shaft 242, a cam 243, and a limit plate 244. The connecting shaft 242 horizontally passes through the plate surface of the mounting plate 241. The cam 243 is arranged at the end of the connecting shaft 242. The cam 243 passes through the wall of the upper end shell of the mounting frame 120. The limit plate 244 is fixedly arranged on the wall of the connecting shaft 242. The mounting plate 241 is located between the limit plate 244 and the cam 243. The trigger mechanism 230 is arranged on the push rod 220, and the trigger mechanism 230 is connected to the connecting shaft 242 through a transmission connection.

[0033] More specifically, the trigger mechanism 230 is provided with multiple groups and corresponds to the multiple groups of force-applying components 240 one by one. The trigger mechanism 230 includes a displacement block 231, a connecting column 232, a connecting sleeve 233, and a push column 234. The displacement block 231 is located on one side of the push rod 220 and is close to the limit plate 244. One end of the connecting column 232 is connected to the wall of the displacement block 231, and the other end of the connecting column 232 extends horizontally. The connecting column 232 is provided with two and They are arranged in parallel, one end of the connecting sleeve 233 is fixedly connected to the wall of the push rod 220, the other end of the connecting sleeve 233 is sleeved on the connecting column 232, a spring 1 is sleeved on the connecting column 232 and the connecting sleeve 233, one end of the spring 1 is connected to the wall of the push rod 220, and the other end of the spring 1 is connected to the wall of the displacement block 231, the push column 234 is vertically arranged at the bottom of the displacement block 231, and the wall of the connecting shaft 242 is provided with a spiral groove 245. The bottom end of the push column 234 matches and extends into the spiral groove 245 of the connecting shaft 242. A pressure sensor is arranged on the arc surface of the cam 243. When the rear windshield bracket is bonded to the mounting frame 120, the cylinder 210 pushes the push rod 220 to move, thereby pushing the displacement block 231 to move in the direction close to the mounting plate 241, thereby pushing the connecting shaft 242 to move, and the cam 243 extends out of the upper end shell wall of the mounting frame 120, and the limit plate 244 contacts the plate surface of the mounting plate 241. Then the rear windshield bracket is bonded to the mounting frame 120, and the upper edge of the rear windshield bracket contacts the bottom of the cam 243. After the rear windshield bracket is bonded and fixed, the cylinder 210 continues to push the displacement block 231 to move in the direction close to the mounting plate 241, and the push column 234 drives the connecting shaft 242 to rotate, thereby driving the cam 243 to rotate. When the cam 243 rotates, the cam 243 provides shear force to the rear windshield bracket.

[0034] like Figure 5-Figure 7 As shown, a shift block 235 is arranged directly above the shift block 1 231, and the connection method between the shift block 235 and the shift block 1 231 is the same as the connection method between the shift block 1 231 and the push rod 220. A guide groove 1 236 is provided on the shift block 235, and the guide groove 1 236 is arranged obliquely. A connecting plate 221 is fixedly provided on the push rod 220, and a guide column 1 222 is vertically provided on the plate surface of the connecting plate 221, and the guide column 1 222 is matched and sleeved in the guide groove 1 236. An avoidance groove 121 is provided on the top of the upper end shell of the mounting frame 120, and the avoidance groove 121 is parallel to the connecting shaft 242. A top rod 237 is vertically provided on the top of the shift block 235, and the top rod 237 passes through the avoidance groove 121 on the top of the upper end shell of the mounting frame 120.

[0035] like Figure 4-Figure 8As shown, a feedback mechanism 30 is disposed on the top of the upper shell of the mounting frame 120, and the feedback mechanism 30 includes a column 310, a bearing plate 1 320, a bearing plate 2 330, and a feedback assembly 340. The column 310 is vertically disposed on the top of the upper shell of the mounting frame 120, and two columns 310 are provided and arranged in parallel. A baffle is disposed on the top of the column 310, and the bearing plate 1 320 and the bearing plate 2 330 are sleeved on the column 310. The column 310 is sleeved with a spring 2, a spring 3, and a spring 2. One end of spring 237 contacts the surface of carrier plate 1 320, the other end of spring 2 contacts the baffle at the top of column 310, one end of spring 3 contacts the surface of carrier plate 2 330, the other end of spring 3 contacts the top of the upper shell of mounting frame 120, a trigger rod 238 is horizontally fixed on the top of top rod 237, the trigger rod 238 extends horizontally and extends between carrier plate 1 320 and carrier plate 2 330, and feedback assembly 340 is arranged at the ends of carrier plate 1 320 and carrier plate 2 330.

[0036] More specifically, a support rod 2 331 is fixedly provided at the end of the carrier plate 1 320, and a dial 332 and an image sensor 333 are provided at the end of the support rod 2 331. The feedback assembly 340 includes a support rod 3 341, a guide column 2 342, and an indicator rod 343. The support rod 341 is fixedly provided at the end of the carrier plate 2 330, the guide column 2 342 is vertically provided on the support rod 3 341, and the indicator rod 343 is rotatably provided at the end of the carrier plate 1 320. A guide groove 2 344 is provided on the indicator rod 343, and the guide column 2 342 is matched and sleeved in the guide groove 2 344 of the indicator rod 343. The shift block 1 231 moves toward the direction close to the mounting plate 241, and the push column 234 drives the connecting shaft 242 to rotate, thereby driving the cam 243 to rotate. When the cam 243 rotates, the cam 243 provides a shear force to the rear windshield bracket. In the process of driving the cam 243 to rotate, the push column 234 drives the connecting shaft 242 to rotate, thereby driving the cam 243 to rotate. The rod 220 and the displacement block 1 231 are close to each other, and the guide column 1 drives the displacement block 235 to move upward, thereby driving the trigger rod 238 to move upward, thereby driving the bearing plate 1 320 and the bearing plate 2 330 to move upward synchronously. When a group of force-applying components 240 applies force to displace or damage the rear windshield bracket, the rear windshield bracket has no obstacle to the deflection of the cam 243 of this group, and the push rod 220 and the displacement block 1 231 are away from each other, and the guide column 1 222 drives the displacement block 235 to move downward, thereby driving the trigger rod 238 to move downward, so that the bearing plate 1 320 and the bearing plate 2 330 are away from each other, and then the guide column 2 342 drives the indicator rod 343 to deflect, and the image sensor 333 detects the deflection of the indicator rod 343, indicating that a group of force-applying components 240 causes the rear windshield bracket to be displaced or damaged, and the pressure sensor on the cam 243 reflects the magnitude of the shear force on the rear windshield bracket.

[0037] like Figure 2As shown, a drainage channel is provided inside the mounting frame 120, and a water supply tank 130 and a water supply tank 140 are provided on the base 10. Hot water is stored in the water supply tank 130, and ice water is stored in the water supply tank 140. The water supply tank 130 is connected to the drainage channel via a connecting pipe 131, and the water supply tank 140 is connected to the drainage channel via a connecting pipe 132. The connecting pipe 131 and the connecting pipe 132 are respectively provided with a valve 1 and a valve 2. The water supply tank 130 and the water supply tank 140 are provided with a water pump. When the rear windshield bracket is bonded to the mounting frame 120, ice water is discharged into the drainage channel of the mounting frame 120 to accelerate the bonding speed of the rear windshield bracket. When the rear windshield bracket needs to be removed, hot water is discharged into the drainage channel of the mounting frame 120 to heat the sealant to facilitate the removal of the rear windshield bracket.

[0038] Working principle:

[0039] During use of the present invention, when the rear windshield bracket is bonded to the mounting frame 120, the cylinder 210 pushes the push rod 220 to move, thereby pushing the shift block 231 to move in the direction close to the mounting plate 241, thereby pushing the connecting shaft 242 to move, and the cam 243 extends out of the upper end shell wall of the mounting frame 120, and the limit plate 244 contacts the plate surface of the mounting plate 241. Then the rear windshield bracket is bonded to the mounting frame 120, and the upper edge of the rear windshield bracket contacts the bottom of the cam 243. After the rear windshield bracket is bonded and fixed, the cylinder 210 continues to push the shift block 231 to move in the direction close to the mounting plate 241, and the push column 234 drives the connecting shaft 242 to rotate, thereby driving the cam 243 to rotate. When the cam 243 rotates, the cam 243 provides a shear force to the rear windshield bracket. In the process of driving the cam 243 to rotate, the push rod 22 0 and the displacement block 1 231 are close to each other, the guide column 1 drives the displacement block 2 235 to move upward, thereby driving the trigger rod 238 to move upward, thereby driving the bearing plate 1 320 and the bearing plate 2 330 to move upward synchronously, when a certain group of force-applying components 240 applies force to displace or damage the rear windshield bracket, the rear windshield bracket has no obstacle to the deflection of the cam 243 of this group, and the push rod 220 and the displacement block 1 231 are away from each other, the guide column 1 222 drives the displacement block 2 235 to move downward, thereby driving the trigger rod 238 to move downward, so that the bearing plate 1 320 and the bearing plate 2 330 are away from each other, and then the guide column 2 342 drives the indicator rod 343 to deflect, and the image sensor 333 detects the deflection of the indicator rod 343, indicating that a certain group of force-applying components 240 causes the rear windshield bracket to be displaced or damaged, and the pressure sensor on the cam 243 reflects the magnitude of the shear force on the rear windshield bracket.

[0040] It should be noted that the above specific implementations are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art should understand that various modifications, equivalent substitutions, changes, etc. can be made to the present invention. However, as long as these changes do not deviate from the spirit of the present invention, they should be within the scope of protection of the present invention. In addition, some terms used in the specification and claims of this application are not restrictive, but are only for the convenience of description.

Claims

1. A shear force test tool for a rear windshield bracket of an automobile, characterized in that: It includes: A base, a support rod, a mounting frame, and a testing mechanism. The mounting frame is arranged on the base through a support rod. The testing mechanism is arranged on the mounting frame and is close to the top of the mounting frame. The windshield bracket is bonded to the frame surface of the mounting frame through a sealant. The testing mechanism includes a cylinder, a push rod, a trigger mechanism, and a force-applying assembly. The mounting frame is a shell structure. The cylinder is arranged on one side of the upper end shell of the mounting frame. The push rod is horizontally fixedly connected to the end of the cylinder. The force-applying assembly is arranged in the upper end shell of the mounting frame. There are multiple groups of force-applying assemblies and they are evenly spaced along the length direction of the upper end shell of the mounting frame. A mounting plate is vertically arranged in the upper end shell of the mounting frame. The force-applying assembly includes a connecting shaft, a cam, and a limit plate. The connecting shaft horizontally passes through the plate surface of the mounting plate. The cam is arranged at the end of the connecting shaft. The cam passes through the upper end shell wall of the mounting frame. The limit plate is fixedly arranged on the wall of the connecting shaft. The mounting plate is between the limit plate and the cam. The trigger mechanism is arranged on the push rod, and the trigger mechanism is connected to the connecting shaft through transmission.

2. According to claim 1, a shear force testing tool for rear windshield bracket of an automobile, characterized in that: The trigger mechanism is provided with multiple groups and corresponds to the multiple groups of force-applying components one by one. The trigger mechanism includes a shift block, a connecting column, a connecting sleeve, and a push column. The shift block is located on one side of the push rod and close to the limit plate. One end of the connecting column is connected to the wall of the shift block, and the other end of the connecting column extends horizontally. Two connecting columns are provided and are arranged in parallel. One end of the connecting sleeve is fixedly connected to the wall of the push rod, and the other end of the connecting sleeve is sleeved on the connecting column. A spring is sleeved on the connecting column and the connecting sleeve. One end of the spring is connected to the wall of the push rod, and the other end of the spring is connected to the wall of the shift block. The push column is vertically arranged at the bottom of the shift block, and the wall of the connecting shaft is provided with a spiral groove. The bottom end of the push column matches and extends into the spiral groove of the connecting shaft. A pressure sensor is provided on the arc surface of the cam.

3. According to claim 2, a vehicle rear windshield bracket shear force testing tool is characterized in that: A shift block 2 is arranged directly above the shift block 1. The connection method between the shift block 2 and the shift block 1 is the same as the connection method between the push rod of the shift block 1. A guide groove 1 is provided on the shift block 2, and the guide groove 1 is arranged obliquely. A connecting plate is fixedly provided on the push rod, and a guide column 1 is vertically provided on the plate surface of the connecting plate. The guide column 1 is matched and sleeved in the guide groove 1. An avoidance groove is provided on the top of the upper end shell of the mounting frame, and the avoidance groove is parallel to the connecting axis. A push rod is vertically provided on the top of the shift block 2, and the push rod passes through the avoidance groove on the top of the upper end shell of the mounting frame.

4. The shear force testing tool for rear windshield bracket of an automobile according to claim 3, characterized in that: A feedback mechanism is arranged on the top of the upper shell of the mounting frame, and the feedback mechanism includes a column, a bearing plate 1, a bearing plate 2, and a feedback assembly. The column is vertically arranged on the top of the upper shell of the mounting frame, and two columns are provided and arranged in parallel. A baffle is arranged on the top of the column, and the bearing plate 1 and the bearing plate 2 are sleeved on the column. A spring 2 and a spring 3 are sleeved on the column, one end of the spring 2 contacts the plate surface of the bearing plate 1, and the other end of the spring 2 contacts the baffle on the top of the column, one end of the spring 3 contacts the plate surface of the bearing plate 2, and the other end of the spring 3 contacts the top of the upper shell of the mounting frame, and a trigger rod is horizontally fixed on the top of the top rod, and the trigger rod extends horizontally and extends between the bearing plate 1 and the bearing plate 2, and the feedback assembly is arranged at the ends of the bearing plate 1 and the bearing plate 2.

5. The shear force testing tool for rear windshield bracket of an automobile according to claim 4, characterized in that: A support rod 2 is fixedly arranged at the end of the first carrier plate, and a scale plate and an image sensor are arranged at the end of the second support rod.

6. The automobile rear windshield bracket shear force testing tool according to claim 5, characterized in that: The feedback assembly includes a support rod three, a guide column two, and an indicator rod. The support rod three is fixedly arranged at the end of the supporting plate two, the guide column two is vertically arranged on the support rod three, the indicator rod is rotatably arranged at the end of the supporting plate one, the indicator rod is provided with a guide groove two, and the guide column two is matched and sleeved in the guide groove two of the indicator rod.

7. The shear force testing tool for rear windshield bracket of an automobile according to claim 6, characterized in that: A drainage channel is arranged inside the installation frame, and a water supply tank 1 and a water supply tank 2 are arranged on the base. The water supply tank 1 contains hot water, and the water supply tank 2 contains ice water. The water supply tank 1 is connected to the drainage channel through a connecting pipe 1, and the water supply tank 2 is connected to the drainage channel through a connecting pipe 2. The connecting pipe 1 and the connecting pipe 2 are respectively provided with a valve 1 and a valve 2, and the water supply tank 1 and the water supply tank 2 are provided with water pumps.

8. A method for testing a shear force testing tool for a rear windshield bracket of an automobile according to claim 7, wherein: S1. When the rear windshield bracket is bonded to the mounting frame, the cylinder pushes the push rod to move, thereby pushing the shift block to move in the direction close to the mounting plate, thereby pushing the connecting shaft to move, the cam extends out of the upper shell wall of the mounting frame, the limit plate contacts the plate surface of the mounting plate, and then the rear windshield bracket is bonded to the mounting frame, the upper edge of the rear windshield bracket contacts the bottom of the cam, and after the rear windshield bracket is bonded and fixed, the cylinder continues to push the shift block to move in the direction close to the mounting plate, the push column drives the connecting shaft to rotate, thereby driving the cam to rotate, and when the cam rotates, the cam provides shear force to the rear windshield bracket; S2. In the process of driving the cam to rotate, the push rod and the shift block 1 approach each other, the guide column 1 drives the shift block 2 to move upward, thereby driving the trigger rod to move upward, thereby driving the bearing plate 1 and the bearing plate 2 to move upward synchronously. When a group of force-applying components applies force to displace or damage the rear windshield bracket, the rear windshield bracket has no obstacle to the deflection of the cam of this group, the push rod and the shift block 1 move away from each other, the guide column 1 drives the shift block 2 to move downward, thereby driving the trigger rod to move downward, so that the bearing plate 1 and the bearing plate 2 move away from each other, and then the guide column 2 drives the indicator rod to deflect. The image sensor detects the deflection of the indicator rod, indicating that a group of force-applying components causes the rear windshield bracket to shift or damage, and the pressure sensor on the cam reflects the magnitude of the shear force on the rear windshield bracket.

Images