Strength detection equipment for new energy automobile fastening bolt research and development

Abstract

The invention relates to the technical field of bolt detection, in particular to strength detection equipment for new energy automobile fastening bolt research and development, which comprises a tensile platform and a U-shaped bolt, the top end of the tensile platform is fixedly connected with a tensile rack, the top end of the tensile platform is fixedly connected with a lower clamp, and an upper clamp is arranged above the lower clamp. Through the arrangement of the feeding mechanism and the discharging mechanism, the U-shaped bolt provided with the upper connecting plate and the nut only needs to be placed in the placing groove, and the broken U-shaped bolt can be automatically pushed out after the tensile strength detection of the previous U-shaped bolt is completed, so that the detection efficiency is greatly improved, and the labor intensity of workers is reduced. The U-shaped bolt is automatically placed in the upper cylinder and the lower cylinder for tensile strength detection, a protective door does not need to be opened in the whole process, position conversion of the U-shaped bolt is achieved through rotation of the round block, the protective effect of tensile strength detection is guaranteed, and the detection efficiency of the device is improved.

Description

Technical Field

[0001] This invention relates to the field of bolt testing technology, and in particular to a strength testing device for the research and development of fastening bolts for new energy vehicles. Background Technology

[0002] The strength testing equipment is specifically designed for testing new materials in fastening bolts for new energy vehicles. It serves the research and verification process of new alloy materials, composite materials, and special coated bolts. Under the technological trend of emphasizing both lightweighting and high strength in new energy vehicles, traditional metal materials are constantly being replaced by new high-performance materials. During the research and development stage, it is essential to verify the reliability of new materials through systematic strength testing. The equipment, based on the characteristics of new materials, accurately evaluates the ultimate bearing capacity and deformation characteristics of new fastening bolts by simulating tensile, shear, torsional, and fatigue loads under real vehicle conditions. It can promptly identify microstructural defects or process compatibility issues in materials, providing key evidence for material formulation optimization and heat treatment process improvement. The testing process covers everything from material-level performance verification to finished product reliability confirmation, ensuring that new material bolts maintain connection stability in complex environments such as vibration, temperature difference, and corrosion.

[0003] In the field of new energy vehicle manufacturing, U-bolts are widely used in key parts such as battery pack fixing, motor installation, and chassis suspension. Their tensile strength is directly related to the safety performance of the whole vehicle. When existing tensile testing equipment performs multi-batch testing on U-bolts, it is necessary to frequently open and close the protective door to complete the material loading and unloading operation. The testing process is relatively cumbersome. This operation mode leads to low testing efficiency and makes it difficult to meet the needs of rapid verification of new material bolts in the R&D stage. It seriously restricts the progress and production capacity of R&D testing of fastening bolts for new energy vehicles.

[0004] Therefore, a strength testing device for the development of fastening bolts for new energy vehicles is proposed to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of the prior art by proposing a strength testing device for the research and development of fastening bolts for new energy vehicles.

[0006] To achieve the above objectives, the technical solution adopted by this invention is as follows: a strength testing device for the research and development of fastening bolts for new energy vehicles, comprising a tensile platform and U-bolts. A tensile frame is fixedly connected to the top of the tensile platform, and a lower clamp is fixedly connected to the top of the tensile platform. An upper clamp is provided above the lower clamp. A testing mechanism for driving the upper clamp to move up and down and pull the U-bolts is provided on the tensile platform. A U-shaped protective cover is fixedly connected to the outer wall of the tensile frame. A protective door is hinged to the U-shaped protective cover. An upper cylinder is bolted to the upper clamp, and a lower cylinder is bolted to the lower clamp. A moving platform is laterally slidably connected to the tensile platform. A pair of lateral movement mechanisms for driving the moving platform to move back and forth are provided on the tensile platform. A circular block is rotatably connected to the moving platform. A top plate is fixedly connected to the top of the moving platform. A placement groove is opened on the outer wall of the circular block. A feeding mechanism for automatically pushing the U-bolts into the placement groove is provided, and a discharging mechanism for automatically ejecting the U-bolts after testing is also provided.

[0007] In the above technical solution, a rotary motor is fixedly connected to the top of the top plate, and the output end of the rotary motor passes through the bottom of the top plate and is fixedly connected to the top of the round block. A front groove is opened through the front side of the protective door.

[0008] In the above technical solution, the feeding mechanism further includes an upper electric telescopic cylinder, a lower T-shaped groove is provided on the front side of the lower cylinder, an upper T-shaped groove is provided on the front side of the upper cylinder, a pair of upper electric telescopic cylinders are provided, the upper electric telescopic cylinders are respectively fixedly connected to the rear side of the upper cylinder and the lower cylinder, a receiving groove is provided on the rear side of both the upper T-shaped groove and the lower T-shaped groove, a feeding plate is provided inside the receiving groove, the output end of the upper electric telescopic cylinder passes through the receiving groove and is fixedly connected to the side wall of the feeding plate, and the top of the placement groove is flush with the top of the upper T-shaped groove.

[0009] In the above technical solution, the lower cylinder is further provided with an arc-shaped groove for placing U-bolts on the front side, the upper T-shaped groove is provided through both sides, the bottom end of the placement groove is set as a semi-circular arc, and the bottom end of the placement groove is adapted to the outer wall of the U-bolt, and the bottom end of the arc-shaped groove is flush with the bottom end of the placement groove.

[0010] In the above technical solution, the feeding mechanism further includes a pair of lower electric telescopic cylinders. A pair of inner grooves are provided inside the placement groove. The lower electric telescopic cylinders are all fixedly connected to the inner side of the inner grooves. Electromagnets are fixedly connected to the output ends of the lower electric telescopic cylinders. U-bolts are placed inside the placement grooves. Connecting plates are inserted between the two ends of the U-bolts. Nuts are threaded to both ends of the U-bolts. The connecting plates and U-bolts are both made of alloy steel.

[0011] In the above technical solution, a pair of locking blocks are fixedly connected to the inner side of the placement slot, and L-shaped plates are fixedly connected to both sides of the outer wall of the locking blocks. The bottom end of each L-shaped plate is provided with an inclined groove.

[0012] In the above technical solution, a pair of vertical grooves are further provided inside the upper cylinder, and vertical plates are slidably connected to the inner side of each vertical groove. The top of each vertical plate is provided through the inner side of the upper T-shaped groove. A return spring is fixedly connected between the bottom end of the vertical groove and the bottom end of the vertical plate. Straight grooves are provided on the side walls of each vertical groove, and round rods are fixedly connected to the side walls of each vertical plate relative to the position inside the straight groove.

[0013] In the above technical solution, a lower groove is further provided at the top of the tensile platform relative to the front side of the lower clamp, and a collection box is placed inside the lower groove.

[0014] In the above technical solution, the top of the upper T-shaped groove is provided with a semi-circular annular groove, the top of the annular groove is provided through the top of the upper cylinder, the inner side of the annular groove is provided with an arc plate, the bottom end of the arc plate is fixedly connected to a pair of lower rods, the top of the upper cylinder is fixedly connected to a top electric telescopic cylinder, and the output end of the top electric telescopic cylinder is fixedly connected to the top of the arc plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention, through the setting of the feeding and unloading mechanisms, only requires placing the U-bolt with the connecting plate and nut installed in the placement groove. After the tensile strength test of the previous U-bolt is completed, the broken U-bolt is automatically pushed out, and then the U-bolt is automatically placed into the upper and lower cylinders for tensile strength testing. The entire process does not require opening the protective door, and the position of the U-bolt is changed by the rotation of the circular block, which ensures the protective function of tensile strength testing and improves the testing efficiency of the device.

[0016] 2. Through the design of the card block, upper T-slot and lower T-slot, this invention enables the equipment to automatically switch between loading and unloading U-shaped spirals and ordinary bolts, thereby improving the applicability of the device. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the front of the strength testing device of the present invention; Figure 2 This is a frontal perspective view of the tensile platform, tensile frame, and mobile platform of the present invention; Figure 3 This is a rear three-dimensional structural diagram of the tensile platform, tensile frame, upper clamp, and lower clamp of the present invention. Figure 4 This is a frontal perspective view of the tensile platform and testing mechanism of the present invention; Figure 5 This is a rear-view perspective three-dimensional structural diagram of the circular block and the moving platform of the present invention; Figure 6 This is a three-dimensional structural diagram of the upper and lower cylinders of the present invention. Figure 7 This is a partial cross-sectional three-dimensional structural diagram of the upper cylinder and the upper electric telescopic cylinder of the present invention; Figure 8 This is a schematic diagram of the overall appearance structure of the protective door of the present invention; Figure 9 This is a partial cross-sectional three-dimensional structural diagram of the circular block and rotary motor of the present invention; Figure 10 This is a partial cross-sectional three-dimensional structural diagram of the upper cylinder and U-bolt of the present invention. Figure 11 This is a schematic diagram of the three-dimensional structure of a partial cross-section of the front of the upper cylinder of the present invention.

[0018] In the diagram: 1. Tensile platform; 2. Tensile frame; 3. Lower clamp; 4. Upper clamp; 5. U-bolt; 6. Testing mechanism; 7. U-shaped protective cover; 8. Protective door; 9. Upper cylinder; 10. Lower cylinder; 11. Moving platform; 12. Lateral movement mechanism; 13. Round block; 14. Top plate; 15. Placement slot; 16. Rotary motor; 17. Lower T-slot; 18. Arc-shaped slot; 19. Upper T-slot; 20. Upper electric telescopic cylinder; 21. Storage slot; 22. Feeding plate; 23. Lower electric telescopic cylinder; 24. Electromagnet; 25. Connecting plate; 26. Nut; 27. Clamping block; 28. L-shaped plate; 29. ​​Inclined slot; 30. Vertical slot; 31. Vertical plate; 32. Return spring; 33. Straight slot; 34. Round rod; 35. Lower slot; 36. Collection box; 37. Annular slot; 38. Arc plate; 39. Lower rod; 40. Top electric telescopic cylinder; 41. Front slot. Detailed Implementation

[0019] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the invention is not limited to the specific embodiments disclosed below.

[0021] In practical use, it was found that when the existing tensile testing equipment performs multiple batch tests on U-bolts 5, it is necessary to frequently open and close the protective door 8 to complete the material loading and unloading operation. The testing process is relatively cumbersome. This operation mode leads to low testing efficiency and makes it difficult to meet the needs of rapid verification of new material bolts in the R&D stage. It seriously restricts the progress and production capacity of R&D testing of fastening bolts for new energy vehicles. In order to solve the above problems, the following structure was invented.

[0022] like Figures 1-11 The strength testing equipment shown is for the research and development of fastening bolts for new energy vehicles. It includes a tensile platform 1 and U-bolts 5. A tensile frame 2 is fixedly connected to the top of the tensile platform 1, and a lower clamp 3 is also fixedly connected to the top of the platform 1. An upper clamp 4 is located above the lower clamp 3. A testing mechanism 6 is provided on the tensile platform 1 to drive the upper clamp 4 to move up and down and pull the U-bolts 5. A U-shaped protective cover 7 is fixedly connected to the outer wall of the tensile frame 2, and a protective door 8 is hinged to the U-shaped protective cover 7. An upper cylinder 9 is bolted to the upper clamp 4, and a lower cylinder 10 is bolted to the lower clamp 3. The tensile platform 1 slides laterally. A mobile platform 11 is connected to the tensile platform 1. A pair of transverse mechanisms 12 are provided on the tensile platform 1 to drive the mobile platform 11 to move back and forth. The transverse mechanism 12 is mainly composed of a motor and a lead screw, etc. It can drive the mobile platform 11 to move back and forth. It is a mature technology in the prior art and will not be described in detail here. A circular block 13 is rotatably connected to the mobile platform 11. A top plate 14 is fixedly connected to the top of the mobile platform 11. A placement groove 15 is opened on the outer wall of the circular block 13. A feeding mechanism for automatically pushing U-bolts 5 is provided in the placement groove 15. A discharging mechanism for automatically pushing out U-bolts 5 after inspection is also provided.

[0023] A rotary motor 16 is fixedly connected to the top of the top plate 14. The output end of the rotary motor 16 passes through the bottom of the top plate 14 and is fixedly connected to the top of the round block 13. A front groove 41 is opened through the front side of the protective door 8.

[0024] The unloading mechanism includes an upper electric telescopic cylinder 20. A lower T-slot 17 is provided on the front side of the lower cylinder 10, and an upper T-slot 19 is provided on the front side of the upper cylinder 9. A pair of upper electric telescopic cylinders 20 are provided, and the upper electric telescopic cylinders 20 are fixedly connected to the rear side of the upper cylinder 9 and the lower cylinder 10 respectively. A receiving groove 21 is provided on the rear side of both the upper T-slot 19 and the lower T-slot 17. A unloading plate 22 is provided inside the receiving groove 21. The output end of the upper electric telescopic cylinder 20 passes through the receiving groove 21 and is fixedly connected to the side wall of the unloading plate 22. The top of the placement groove 15 is flush with the top of the upper T-slot 19.

[0025] The lower cylinder 10 has an arc-shaped groove 18 for placing the U-bolt 5 on the front side. The upper T-shaped groove 19 is provided through both sides. The bottom end of the placement groove 15 is set as a semi-circular arc, and the bottom end of the placement groove 15 is adapted to the outer wall of the U-bolt 5. The bottom end of the arc-shaped groove 18 is flush with the bottom end of the placement groove 15.

[0026] The top of the tensile platform 1 is provided with a lower groove 35 relative to the front side of the lower clamp 3, and a collection box 36 is placed inside the lower groove 35.

[0027] When the testing mechanism 6 is running, the upper clamp 4 and the upper cylinder 9 are driven by a servo electric cylinder and a lead screw to move upward at a uniform speed, applying an axial tensile load to the U-bolt 5 until the set force value is reached or the bolt breaks. A high-precision force sensor is installed on the upper cylinder 9 to collect the load value in real time during the tensile process. At the same time, the displacement of the upper cylinder 9 is monitored by a grating ruler or encoder to calculate the elastic deformation and plastic elongation of the bolt. The control system records the load-displacement curve synchronously and automatically captures key indicators such as yield point, maximum tensile force and fracture strength to achieve accurate evaluation of the mechanical properties of the new material bolt. When the U-bolt 5 breaks, the detection mechanism 6 is first controlled to drive the upper clamp 4 to reset, and then the upper electric telescopic cylinder 20 is controlled to start, driving the unloading plate 22 to move out of the collection groove 21, thereby pushing the broken U-bolt 5 out of the upper T-groove 19 and the lower T-groove 17, so that it falls into the collection box 36 for centralized collection and processing.

[0028] In summary, through the design of the above structure, the broken U-bolt 5 can be automatically pushed out after the tensile strength test of the previous U-bolt 5 is completed, thereby improving the testing efficiency of the device.

[0029] Based on the above embodiments, it was found during use that when performing multiple batch tests on U-bolts 5, the protective door 8 needs to be opened and closed frequently to complete the material feeding operation, making the testing process cumbersome. This operation mode leads to low testing efficiency, making it difficult to meet the needs of rapid verification of new material bolts in the R&D stage, which seriously restricts the progress and production capacity of R&D testing of fastening bolts for new energy vehicles. To solve the above problems, further improvements were made to the above structure.

[0030] The feeding mechanism includes a pair of lower electric telescopic cylinders 23. A pair of inner grooves are provided inside the placement groove 15. The lower electric telescopic cylinders 23 are fixedly connected to the inner side of the inner grooves. Electromagnets 24 are fixedly connected to the output ends of the lower electric telescopic cylinders 23. U-bolts 5 are placed inside the placement groove 15. A connecting plate 25 is inserted between the two ends of the U-bolts 5. Nuts 26 are threaded to both ends of the U-bolts 5. The connecting plate 25 and the U-bolts 5 are both made of alloy steel.

[0031] A pair of locking blocks 27 are fixedly connected to the inner side of the placement slot 15. L-shaped plates 28 are fixedly connected to both sides of the outer wall of the locking blocks 27. The bottom end of each L-shaped plate 28 is provided with a slanted groove 29.

[0032] The upper cylinder 9 has a pair of vertical grooves 30 inside. Vertical plates 31 are slidably connected to the inner side of each vertical groove 30. The top of the vertical plate 31 passes through the inner side of the upper T-shaped groove 19. A return spring 32 is fixedly connected between the bottom end of the vertical groove 30 and the bottom end of the vertical plate 31. Straight grooves 33 are opened on the side walls of the vertical groove 30. Round rods 34 are fixedly connected to the side walls of the vertical plate 31 relative to the position inside the straight grooves 33.

[0033] The top of the upper T-shaped groove 19 is provided with a semi-circular annular groove 37, the top of the annular groove 37 passes through the top of the upper cylinder 9, and an arc plate 38 is provided on the inner side of the annular groove 37. A pair of lower rods 39 are fixedly connected to the bottom of the arc plate 38. A top electric telescopic cylinder 40 is fixedly connected to the top of the upper cylinder 9, and the output end of the top electric telescopic cylinder 40 is fixedly connected to the top of the arc plate 38.

[0034] During the tensile testing of one of the U-bolts 5, the rotary motor 16 can be controlled to start and drive the round block 13 to rotate, rotating the placement groove 15 to the front. Then, the tester first inserts the connecting plate 25 onto the U-bolt 5, and then screws in the nut 26. (It should be noted that, through the setting of the round rod 34 and the inclined groove 29, the vertical plate 31 can be pressed down before the connecting plate 25 is pushed in. Therefore, when the nut 26 is screwed in, it is only necessary to screw the nut 26 onto the U-bolt 5 as a whole, and make the connecting plate 25 above the locking block 27, so as to ensure that the connecting plate 25 is accurately pushed into the upper T-groove 19.) Then, the U-bolt 5 is placed in the placement groove 15, and the connecting plate 25 is made to fit against the bottom of the nut 26. The U-bolt 5 and the connecting plate 25 are placed on the electromagnet 24. Then, the electromagnet 24 is energized to attract and fix the connecting plate 25 and the U-bolt 5. Then, the rotary motor 16 can be started to drive the circular block 13 to rotate in the opposite direction, rotating the placement slot 15 to the rear. After the U-bolt 5 between the upper cylinder 9 and the lower cylinder 10 is inspected, the unloading mechanism can be started to repeat the above operation, pushing the broken U-bolt 5 out of the upper T-slot 19 and the lower T-slot 17. Then, the unloading mechanism is reset, and the transverse mechanism 12 is started to drive the moving platform 11 to move backward, docking the placement slot 15 with the upper T-slot 19 and the lower T-slot 17. During this process, the backward movement of the circular block 13, the moving platform 11, and the top plate 14 will drive the locking block 27 and the L-shaped plate 28 to move together. At this time, the L-shaped plate 28... The inclined groove 29 will move above the round rod 34. Since the round rod 34 can only slide up and down in the straight groove 33, under the pressure of the inclined surface of the inclined groove 29, it will gradually drive the round rod 34 to slide down in the straight groove 33, and drive the vertical plate 31 to move down, while compressing the return spring 32, until the placement groove 15 is connected with the upper T-groove 19 and the lower T-groove 17. (It should be noted that the position of the arc groove 18 and the bottom position of the placement groove 15 are fixed and cannot be adjusted. Therefore, the only variables are the upper T-groove 19 and the screw-in position of the nut 26. Therefore, by pressing down the vertical plate 31, it can be ensured that the connecting plate 25 can be accurately inserted into the upper T-groove 19 in different positions.) Finally, the lower electric telescopic cylinder 23 is activated to push the electromagnet 24 backward, which in turn moves the U-bolt 5, which is fixed in place, backward and inserts it into the arc-shaped groove 18 and the upper T-shaped groove 19. After insertion, the horizontal movement mechanism 12 is controlled to move the moving platform 11 forward to reset. At this time, the lower electric telescopic cylinder 23 continues to operate, thereby ensuring that the U-bolt 5 remains in the insertion position when the round block 13 moves forward. When the L-shaped plate 28 is moved away from the round rod 34, the round rod 34 is released from compression and pushed back to its original position under the elastic force of the return spring 32, so that the vertical plate 31 is tightly attached to the bottom of the connecting plate 25. Then, the electromagnet 24 is de-energized, and the vertical plate 31 and the connecting plate 25 are pushed upward under the elastic force of the return spring 32, pressing the U-bolt 5 tightly against the arc-shaped groove 18 and the upper T-shaped groove 19. In slot 18, ensure the stability of the position of the U-bolt 5 after placement. Then, control the lower electric telescopic cylinder 23 to reset, which will control the detection mechanism 6 to drive the upper clamp 4 and upper cylinder 9 to move upward. At this time, the reset spring 32 will be compressed until the vertical plate 31 contacts the bottom of the upper T-slot 19. At this time, the U-bolt 5 is in a tensile testing state. Then, control the top electric telescopic cylinder 40 to start and drive the arc plate 38 and lower rod 39 to move downward, so that the lower rod 39 is pressed against the connecting plate 25 (to prevent the connecting plate 25 from bouncing under the elastic force of the reset spring 32 when the U-bolt 5 breaks). Then, control the detection mechanism 6 to run and perform tensile testing on the U-bolt 5. At this time, the above operation can be repeated to control the rotary motor 16 to start and put in another U-bolt 5.

[0035] In summary, through the design of the above structure, the U-bolt 5 with the connecting plate 25 and nut 26 installed is placed in the placement groove 15, and the U-bolt 5 can be automatically placed into the upper cylinder 9 and lower cylinder 10 for tensile strength testing under the operation of the feeding mechanism. There is no need to open the protective door 8 throughout the process, and the position of the U-bolt is changed by rotating the circular block 13, which ensures the protective function of tensile strength testing and improves the testing efficiency of the device. At the same time, this equipment can not only automatically switch the loading and unloading of U-shaped spirals 5, but also automatically switch the loading and unloading of ordinary bolts, thus improving the applicability of the device.

[0036] Finally, it should be noted that during the inspection of U-bolt 5, at the moment of breakage, the lower half of U-bolt 5 will flip downwards, but due to the restriction of the arc groove 18, it will remain in the arc groove 18. The upper half of U-bolt 5 will remain in the upper T-groove 19 due to the resistance of the lower rod 39. Therefore, when U-bolt 5 breaks, it will not fly off, ensuring safety during the inspection process and ensuring the normal operation of the feeding mechanism. The function of the protective door 8 and the U-shaped protective cover 7 is to prevent the debris at the break point from flying out.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of the present invention.

[0038] Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of the present invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed.

Claims

1. A strength testing device for the research and development of fastening bolts for new energy vehicles, comprising a tensile platform (1) and a U-bolt (5), wherein a tensile frame (2) is fixedly connected to the top of the tensile platform (1), a lower clamp (3) is fixedly connected to the top of the tensile platform (1), an upper clamp (4) is provided above the lower clamp (3), and a testing mechanism (6) for driving the upper clamp (4) to move up and down to pull the U-bolt (5) is provided on the tensile platform (1), characterized in that: The tensile frame (2) is fixedly connected to a U-shaped protective cover (7) on its outer wall. A protective door (8) is hinged to the U-shaped protective cover (7). An upper cylinder (9) is installed on the upper clamp (4) by bolts. A lower cylinder (10) is installed on the lower clamp (3) by bolts. A moving platform (11) is slidably connected to the tensile platform (1). A pair of transverse moving mechanisms (12) for driving the moving platform (11) to move back and forth are provided on the tensile platform (1). A round block (13) is rotatably connected to the moving platform (11). A top plate (14) is fixedly connected to the top of the moving platform (11). A placement groove (15) is opened on the outer wall of the round block (13). A feeding mechanism for automatically pushing U-shaped bolts (5) is provided in the placement groove (15). A discharging mechanism for automatically pushing out the U-shaped bolts (5) after the test is completed is also provided.

2. The strength testing equipment for the research and development of fastening bolts for new energy vehicles according to claim 1, characterized in that: A rotary motor (16) is fixedly connected to the top of the top plate (14). The output end of the rotary motor (16) passes through the bottom of the top plate (14) and is fixedly connected to the top of the round block (13). A front groove (41) is opened through the front side of the protective door (8).

3. The strength testing equipment for the research and development of fastening bolts for new energy vehicles according to claim 1, characterized in that: The feeding mechanism includes an upper electric telescopic cylinder (20), a lower T-shaped groove (17) is provided on the front side of the lower cylinder (10), an upper T-shaped groove (19) is provided on the front side of the upper cylinder (9), a pair of upper electric telescopic cylinders (20) are provided, and the upper electric telescopic cylinders (20) are respectively fixedly connected to the rear side of the upper cylinder (9) and the lower cylinder (10). A storage groove (21) is provided on the rear side of both the upper T-shaped groove (19) and the lower T-shaped groove (17). A feeding plate (22) is provided inside the storage groove (21). The output end of the upper electric telescopic cylinder (20) passes through the storage groove (21) and is fixedly connected to the side wall of the feeding plate (22). The top of the placement groove (15) is flush with the top of the upper T-shaped groove (19).

4. The strength testing equipment for the research and development of fastening bolts for new energy vehicles according to claim 3, characterized in that: The lower cylinder (10) has an arc-shaped groove (18) for placing U-bolts (5) on the front side. The upper T-shaped groove (19) is provided through both sides. The bottom end of the placement groove (15) is set as a semi-circular arc and the bottom end of the placement groove (15) is adapted to the outer wall of the U-bolt (5). The bottom end of the arc-shaped groove (18) is flush with the bottom end of the placement groove (15).

5. The strength testing equipment for the research and development of fastening bolts for new energy vehicles according to claim 1, characterized in that: The feeding mechanism includes a lower electric telescopic cylinder (23), and a pair of lower electric telescopic cylinders (23) are provided. A pair of inner grooves are opened on the inner side of the placement groove (15). The lower electric telescopic cylinders (23) are all fixedly connected to the inner side of the inner groove. The output end of the lower electric telescopic cylinders (23) is fixedly connected to an electromagnet (24). The U-bolt (5) is placed inside the placement groove (15). A connecting plate (25) is inserted between the two ends of the U-bolt (5). Nuts (26) are threaded to both ends of the U-bolt (5). The connecting plate (25) and the U-bolt (5) are both made of alloy steel.

6. The strength testing equipment for the research and development of fastening bolts for new energy vehicles according to claim 1, characterized in that: A pair of locking blocks (27) are fixedly connected to the inner side of the placement slot (15). L-shaped plates (28) are fixedly connected to both sides of the outer wall of the locking blocks (27). The bottom end of the L-shaped plates (28) is provided with inclined grooves (29).

7. The strength testing equipment for the research and development of fastening bolts for new energy vehicles according to claim 3, characterized in that: The upper cylinder (9) has a pair of vertical grooves (30) inside. The vertical grooves (30) are longitudinally slidably connected to the inner side of each vertical plate (31). The top of the vertical plate (31) passes through the inner side of the upper T-shaped groove (19). A return spring (32) is fixedly connected between the bottom end of the vertical groove (30) and the bottom end of the vertical plate (31). The side wall of the vertical groove (30) is provided with a straight groove (33). The side wall of the vertical plate (31) is fixedly connected with a round rod (34) relative to the position inside the straight groove (33).

8. The strength testing equipment for the research and development of fastening bolts for new energy vehicles according to claim 1, characterized in that: The top of the tensile platform (1) is provided with a lower groove (35) at the position of the front side of the lower clamp (3), and a collection box (36) is placed inside the lower groove (35).

9. The strength testing equipment for the research and development of fastening bolts for new energy vehicles according to claim 3, characterized in that: The top of the upper T-shaped groove (19) is provided with a semi-circular annular groove (37), the top of the annular groove (37) is provided through the top of the upper cylinder (9), the inner side of the annular groove (37) is provided with an arc plate (38), the bottom end of the arc plate (38) is fixedly connected with a pair of lower rods (39), the top of the upper cylinder (9) is fixedly connected with a top electric telescopic cylinder (40), and the output end of the top electric telescopic cylinder (40) is fixedly connected to the top of the arc plate (38).

Images