Detection tool for automobile frame longitudinal beam assembly

Abstract

The utility model provides a detection tool for an automobile frame longitudinal beam assembly, which comprises a workbench, the upper surface of the workbench is symmetrically provided with two groups of positioning supporting plates in sliding connection, the upper surface of each positioning plate is provided with a pressing plate, and two groups of elastic connecting assemblies are symmetrically arranged between the two sides of the upper surface of each positioning supporting plate and the two sides of each pressing plate. A plurality of sets of positioning holes are distributed in the upper surface of the workbench, positioning rods are in threaded connection with the interiors of the positioning holes, a side plate is fixedly installed on one side of the workbench, a top plate is fixedly installed on one side of the top surface of the side plate, and an electric push rod is fixedly installed in the middle of the top surface of the top plate. The output end of the electric push rod penetrates through the bottom surface of the top plate and is fixedly connected with an internal damage detection plate, a frame longitudinal beam needing to be detected is placed and positioned through the arranged workbench, the two sides of the frame longitudinal beam are clamped through the arranged positioning supporting plate and the arranged pressing plate, and adaptation is facilitated according to frame longitudinal beams of different models and thicknesses.

Description

Technical Field

[0001] This utility model relates to the field of testing tooling technology, specifically a testing tooling for automotive frame longitudinal beam assemblies. Background Technology

[0002] The chassis is a frame structure that spans the front and rear axles of a car, commonly known as a beam. It is the base of the car and is generally composed of two longitudinal beams and several transverse beams. It is supported on the wheels via the suspension system, front axle, and rear axle. The chassis must have sufficient strength and rigidity to withstand the load of the car and the impact transmitted from the wheels. The function of the chassis is to support and connect the various assemblies of the car, keep the assemblies in a relatively correct position, and withstand various loads inside and outside the car. Therefore, it requires many testing items during its manufacturing process.

[0003] The patent application CN217403810U discloses a testing fixture for a car subframe reinforcement plate, comprising a worktable. The worktable includes a transverse mounting rod and a longitudinal mounting rod. Several positioners are movably connected to the surface of the worktable. Each positioner includes a connecting plate, and several positioning rods are fixed to one side of the connecting plate. A mounting plate is fixed to one end of each positioning rod. The mounting plate has threaded holes on its surface. Through the action of the positioners, the device can flexibly adjust the position of the support on the worktable surface. Compared with traditional fixed positioning, this device can be used for more reinforcement plates of different specifications, and the adjustment process is quick and flexible, allowing for rapid replacement of the support position, making the device more convenient and flexible to use.

[0004] However, the above-mentioned device still has the following problems during implementation:

[0005] 1. The existing testing fixtures for vehicle frame longitudinal beams are relatively simple in structure, and the size of the testing platform is fixed. They cannot provide temporary testing platforms specifically for vehicle frames of different lengths and sizes, resulting in poor flexibility and practicality.

[0006] 2. Most existing inspection fixtures for vehicle frame longitudinal beams use inspection plates to mount sensor probes. The existing inspection plate structure is not convenient for adjusting the height to match the inspection height of the vehicle frame longitudinal beams, which reduces the accuracy of the inspection. Utility Model Content

[0007] The purpose of this invention is to provide a testing fixture for automotive frame longitudinal beam assemblies to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A testing fixture for an automotive frame longitudinal beam assembly includes a workbench. Two sets of positioning plates are symmetrically and slidably connected on the upper surface of the workbench. Each positioning plate has a pressure plate on its upper surface. Two sets of elastic connecting components are symmetrically arranged between the two sides of the upper surface of the positioning plate and the two sides of the pressure plate. Multiple sets of positioning holes are distributed on the upper surface of the workbench, and positioning rods are threaded into each positioning hole.

[0010] A side plate is fixedly installed on one side of the workbench, and a top plate is fixedly installed on the top surface of the side plate. An electric push rod is fixedly installed at the center of the top surface of the top plate. The output end of the electric push rod passes through to the bottom surface of the top plate and is fixedly connected to a connecting top plate. An internal damage detection plate is snapped into the bottom surface of the connecting top plate. The internal damage detection plate is set above the positioning support plate and matched with it.

[0011] Preferably, four sets of support legs are symmetrically and fixedly connected at the four corners of the bottom surface of the workbench, and four sets of sliding grooves are symmetrically opened on the upper surface of the workbench. Slider blocks are fixedly installed on both sides of the bottom surface of the two sets of positioning trays corresponding to the sliding groove positions, and the sliders are slidably connected inside the sliding grooves.

[0012] Preferably, the bottom surface of the workbench is provided with symmetrical mounting grooves on both sides, and motors are symmetrically installed inside the mounting grooves. A lead screw is bolted to the output end of the motor. A fixing block is fixedly connected to the bottom surface of the workbench through a support rod. One end of the lead screw is rotatably connected to one side of the fixing block through a connecting block.

[0013] The lead screw is threaded to a connecting base plate. Two sets of connecting columns are fixedly installed on both sides of the upper surface of the connecting base plate. The bottom surface of the slider is symmetrically provided with grooves corresponding to the positions of the connecting columns. The connecting base plate is fitted to the slider through the connecting columns.

[0014] Preferably, a central positioning sleeve is fixedly installed in the middle of the connecting base plate, and an internal threaded sleeve is movably provided inside the central positioning sleeve. The connecting base plate is movably installed outside the lead screw through the internal threaded sleeve.

[0015] Preferably, the elastic connection assembly includes a base, a return spring, and a connector. The base is fixedly connected to both sides of the upper surface of the positioning tray. A groove is provided inside the base. The connector is slidably connected inside the groove. The bottom end of the return spring is fixedly connected to the bottom of the groove. The top end of the return spring is fixedly connected to the bottom surface of the connector.

[0016] The connector is symmetrically equipped with positioning shafts on its inner side, and docking blocks are symmetrically fixed on the left and right sides of the pressure plate. The end of the positioning shaft is rotatably installed inside the docking block.

[0017] Preferably, the upper surface of the positioning tray is provided with an anti-slip pad, and the lower surface of the pressure plate is adhered with a protective pad. The anti-slip pad and the protective pad are matched and configured to position the two sides of the longitudinal beam of the frame to be inspected by matching the positioning tray and the pressure plate.

[0018] Preferably, telescopic rods are symmetrically arranged between the four corners of the bottom surface of the top plate and the four corners of the upper surface of the internal damage detection plate. The connection of the telescopic rods increases the stability of the internal damage detection plate when it rises and falls. The internal damage detection plate is equipped with a radiographic testing module, which is electrically connected to a sensor to perform internal damage detection on the longitudinal beams of the vehicle frame.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] 1. The frame longitudinal beam to be inspected is placed and positioned using the set workbench. The frame longitudinal beam is clamped on both sides using the set positioning tray and pressure plate. The function of the pressure plate is increased by the set elastic connecting components, which makes it easy to adapt to frame longitudinal beams of different models and thicknesses.

[0021] 2. The motor drives the lead screw to rotate, and the rotation of the lead screw causes the threaded connecting base plate to slide. The bottom surface of the positioning plate is connected to the connecting base plate through the connecting column. Thus, the rotation of the lead screw can drive the two sets of oppositely set positioning plates to move closer or further away, which can be adapted according to the length of the frame longitudinal beam, increasing functionality.

[0022] 3. An electric push rod is installed on the top plate. The output end of the electric push rod is fixedly connected to the top center of the connecting top plate. The internal damage detection plate is snapped onto the bottom surface of the connecting top plate. The electric push rod drives the internal damage detection plate to rise and fall easily, adapting to the longitudinal beams of the vehicle frame for detection, thus increasing the accuracy of the detection. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the main structure of the connecting top plate portion of this utility model;

[0025] Figure 3 This is a schematic diagram of the main structure of the lead screw part of this utility model;

[0026] Figure 4 This is a schematic diagram of the main structure of the workbench portion of this utility model;

[0027] Figure 5 This is a schematic diagram of the main structure of the positioning tray part of this utility model.

[0028] In the diagram: 1. Workbench; 101. Support leg; 2. Positioning tray; 3. Pressure plate; 4. Elastic connection assembly; 401. Base; 402. Return spring; 403. Connector; 5. Positioning hole; 6. Positioning rod; 7. Side plate; 8. Top plate; 801. Connecting top plate; 9. Electric push rod; 10. Internal damage detection plate; 11. Slide groove; 12. Slider; 13. Mounting slot; 14. Motor; 15. Lead screw; 16. Support rod; 17. Fixing block; 18. Connecting base plate; 19. Connecting column; 20. Positioning sleeve; 21. Internal threaded sleeve; 22. Groove; 23. Positioning shaft; 24. Connecting block; 25. Telescopic rod. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figure 1-5 This utility model provides a technical solution:

[0031] Example 1:

[0032] A testing fixture for an automobile frame longitudinal beam assembly includes a workbench 1. Two sets of positioning plates 2 are symmetrically and slidably connected on the upper surface of the workbench 1. Each positioning plate 2 has a pressure plate 3 on its upper surface. Two sets of elastic connecting components 4 are symmetrically arranged between the two sides of the upper surface of the positioning plate 2 and the two sides of the pressure plate 3. Multiple sets of positioning holes 5 are distributed on the upper surface of the workbench 1. Each positioning hole 5 is threaded with a positioning rod 6. The positioning rod 6 is used to position the main body of the frame longitudinal beam by cooperating with the bushing hole of the frame longitudinal beam.

[0033] A side plate 7 is fixedly installed on one side of the workbench 1, and a top plate 8 is fixedly installed on one side of the top surface of the side plate 7. An electric push rod 9 is fixedly installed in the center of the top surface of the top plate 8. The output end of the electric push rod 9 passes through to the bottom surface of the top plate 8 and is fixedly connected to a connecting top plate 801. An internal damage detection plate 10 is snapped into the bottom surface of the connecting top plate 801. The internal damage detection plate 10 is set above the positioning support plate 2 and matched with it.

[0034] Four sets of support legs 101 are symmetrically fixedly connected at the four corners of the bottom surface of the workbench 1. Four sets of sliding grooves 11 are symmetrically opened on the upper surface of the workbench 1. Slider 12 is fixedly installed on both sides of the bottom surface of the two sets of positioning plates 2 corresponding to the sliding grooves 11. The slider 12 is slidably connected to the inside of the sliding grooves 11. Mounting grooves 13 are symmetrically opened on both sides of the bottom surface of the workbench 1. Motors 14 are symmetrically installed inside the mounting grooves 13. A lead screw 15 is bolted to the output end of the motor 14. A fixing block 17 is fixedly connected to the bottom surface of the workbench 1 through a support rod 16. One end of the lead screw 15 is rotatably connected to one side of the fixing block 17 through a connecting block.

[0035] The lead screw 15 is threadedly connected to a connecting base plate 18. Two sets of connecting columns 19 are fixedly installed on both sides of the upper surface of the connecting base plate 18. The bottom surface of the slider 12 is symmetrically provided with grooves corresponding to the positions of the connecting columns 19. The connecting base plate 18 is fitted to the slider 12 through the connecting columns 19. A central positioning sleeve 20 is fixedly installed in the middle of the connecting base plate 18. An internal threaded sleeve 21 is movably provided inside the central positioning sleeve 20. The connecting base plate 18 is movably installed outside the lead screw 15 through the internal threaded sleeve 21. The lead screw 15 is driven to rotate by the motor 14. The rotation of the lead screw 15 causes the threaded connecting base plate 18 to slide. The bottom surface of the positioning plate 2 is connected to the connecting base plate 18 through the connecting columns 19. Thus, the rotation of the lead screw 15 can drive the two sets of oppositely arranged positioning plates 2 to move closer or further apart.

[0036] Example 2:

[0037] Based on Embodiment 1, this embodiment details the elastic connection component 4 in Embodiment 1. The elastic connection component 4 includes a base 401, a return spring 402, and a connector 403. The base 401 is fixedly connected to both sides of the upper surface of the positioning plate 2. A groove 22 is provided inside the base 401. The connector 403 is slidably connected inside the groove 22. The bottom end of the return spring 402 is fixedly connected to the bottom of the groove 22. The top end of the return spring 402 is fixedly connected to the bottom surface of the connector 403. A positioning shaft 23 is symmetrically installed inside the connector 403. A docking block 24 is symmetrically fixedly installed on the left and right sides of the pressure plate 3. The end of the positioning shaft 23 is rotatably installed inside the docking block 24.

[0038] The upper surface of the positioning tray 2 is provided with anti-slip rubber pads, and the lower surface of the pressure plate 3 is attached with protective rubber pads. The anti-slip rubber pads and protective rubber pads are matched and set together. The positioning tray 2 and the pressure plate 3 are matched and set together to position the two sides of the frame longitudinal beam to be tested. The elastic connecting component 4 is set to increase the functionality of the pressure plate 3, making it easy to adapt to the frame longitudinal beams of different models and thicknesses.

[0039] The internal damage detection plate 10 is easily raised and lowered by the electric push rod 9, which is adapted to the longitudinal beam of the frame for inspection, thus increasing the accuracy of the inspection. Telescopic rods 25 are symmetrically arranged between the four corners of the bottom surface of the top plate 8 and the four corners of the upper surface of the internal damage detection plate 10. The connection of the telescopic rods 25 increases the stability of the internal damage detection plate 10 when it rises and falls. The internal damage detection plate 10 is equipped with a radiographic inspection module. The radiographic inspection module is electrically connected to the sensor to perform internal damage inspection on the longitudinal beam of the frame. Multiple sets of inspection probes are installed on the bottom surface of the internal damage detection plate 10 and are connected to the PLC controller for data transmission. Its power supply, specific composition and principle are clear to those skilled in the art, so they will not be described in detail.

[0040] Working principle: During use, the device positions the longitudinal beam of the vehicle frame to be inspected on the workbench 1. The positioning plate 2 and pressure plate 3 clamp the two sides of the longitudinal beam. The elastic connecting component 4 enhances the functionality of the pressure plate 3. The motor 14 drives the lead screw 15 to rotate. The rotation of the lead screw 15 causes the threaded connecting base plate 18 to slide. Thus, the rotation of the lead screw 15 can move the two sets of opposing positioning plates 2 closer or further apart, adapting to the length of the longitudinal beam of the vehicle frame, thereby increasing functionality.

[0041] An electric push rod 9 is installed on the top plate 8. The output end of the electric push rod 9 is fixedly connected to the top center of the connecting top plate 801. The internal damage detection plate 10 is snapped onto the bottom surface of the connecting top plate 801. The electric push rod 9 drives the internal damage detection plate 10 to rise and fall easily, adapting to the longitudinal beam of the frame for detection, thus increasing the accuracy of the detection.

[0042] It should be noted that the electric push rod 9, internal damage detection plate 10, motor 14, lead screw 15 and telescopic rod 25 are existing devices or equipment, or devices or equipment that can be implemented by existing technology. Their power supply, specific composition and principle are clear to those skilled in the art, so they will not be described in detail.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A testing fixture for an automobile frame longitudinal beam assembly, comprising a workbench (1), characterized in that: The workbench (1) has two sets of slidably connected positioning plates (2) symmetrically arranged on its upper surface. Each positioning plate (2) has a pressure plate (3) on its upper surface. Two sets of elastic connecting components (4) are symmetrically arranged between the two sides of the upper surface of the positioning plate (2) and the two sides of the pressure plate (3). The workbench (1) has multiple sets of positioning holes (5) distributed on its upper surface. Each positioning hole (5) is threaded with a positioning rod (6). A side plate (7) is fixedly installed on one side of the workbench (1), and a top plate (8) is fixedly installed on one side of the top surface of the side plate (7). An electric push rod (9) is fixedly installed in the center of the top surface of the top plate (8). The output end of the electric push rod (9) extends through to the bottom surface of the top plate (8) and is fixedly connected to a connecting top plate (801). An internal damage detection plate (10) is snapped onto the bottom surface of the connecting top plate (801). The internal damage detection plate (10) is set above the positioning support plate (2) and matched with it.

2. The inspection fixture for an automotive frame longitudinal beam assembly according to claim 1, characterized in that: The workbench (1) has four sets of support legs (101) symmetrically fixedly connected at the four corners of its bottom surface. The workbench (1) has four sets of sliding grooves (11) symmetrically opened on its upper surface. The two sets of positioning plates (2) have sliders (12) fixedly installed on both sides of their bottom surfaces corresponding to the positions of the sliding grooves (11). The sliders (12) are slidably connected inside the sliding grooves (11).

3. The inspection fixture for an automobile frame longitudinal beam assembly according to claim 2, characterized in that: The workbench (1) has symmetrically provided mounting slots (13) on both sides of its bottom surface. Motors (14) are symmetrically installed inside the mounting slots (13). A lead screw (15) is bolted to the output end of the motor (14). A fixing block (17) is fixedly connected to the bottom surface of the workbench (1) through a support rod (16). One end of the lead screw (15) is rotatably connected to one side of the fixing block (17) through a connecting block. The lead screw (15) is threadedly connected to a connecting base plate (18). Two sets of connecting columns (19) are fixedly installed on both sides of the upper surface of the connecting base plate (18). The bottom surface of the slider (12) is symmetrically provided with grooves corresponding to the positions of the connecting columns (19). The connecting base plate (18) is fitted and installed with the slider (12) through the connecting columns (19).

4. The inspection fixture for an automobile frame longitudinal beam assembly according to claim 3, characterized in that: A central positioning sleeve (20) is fixedly installed in the middle of the connecting base plate (18). An internal threaded sleeve (21) is movably provided inside the central positioning sleeve (20). The connecting base plate (18) is movably installed outside the lead screw (15) through the internal threaded sleeve (21).

5. The inspection fixture for an automobile frame longitudinal beam assembly according to claim 1, characterized in that: The elastic connection assembly (4) includes a base (401), a return spring (402), and a connector (403). The base (401) is fixedly connected to both sides of the upper surface of the positioning plate (2). A groove (22) is provided inside the base (401). The connector (403) is slidably connected inside the groove (22). The bottom end of the return spring (402) is fixedly connected to the bottom of the groove (22), and the top end of the return spring (402) is fixedly connected to the bottom surface of the connector (403). The connector (403) is symmetrically equipped with a positioning shaft (23) on its inner side, and the pressure plate (3) is symmetrically fixed with docking blocks (24) on its left and right sides. The end of the positioning shaft (23) is rotatably installed inside the docking block (24).

6. The inspection fixture for an automobile frame longitudinal beam assembly according to claim 5, characterized in that: The upper surface of the positioning plate (2) is provided with an anti-slip pad, and the lower surface of the pressure plate (3) is adhered with a protective pad. The anti-slip pad and the protective pad are matched and positioned to locate both sides of the longitudinal beam of the frame to be inspected by matching the positioning plate (2) and the pressure plate (3).

7. The inspection fixture for an automobile frame longitudinal beam assembly according to claim 1, characterized in that: Telescopic rods (25) are symmetrically arranged between the four corners of the bottom surface of the top plate (8) and the four corners of the upper surface of the internal damage detection plate (10). The connection of the telescopic rods (25) increases the stability of the internal damage detection plate (10) when it rises and falls. The internal damage detection plate (10) is equipped with a radiographic detection module. The radiographic detection module is electrically connected to the sensor to perform internal damage detection on the longitudinal beam of the frame.

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