A device for testing the strength of a door hinge of a motor vehicle body

Abstract

The application relates to a vehicle body door hinge strength detection device, and relates to the technical field of vehicle body door hinge strength detection.The device comprises a detection table, a fixing seat is installed on the detection table, one side of a hinge is installed on the fixing seat, a lateral pressure structure and a vertical pressure structure are installed on the detection table, the lateral pressure structure comprises a side pressure seat, a rotating piece and a first pressure rod, the side pressure seat is installed on the detection table through an adjusting assembly, the position of the side pressure seat is adjusted through the adjusting assembly to correspond to the rotating axis of the hinge, the rotating piece is installed on the side pressure seat, the first pressure rod is installed on the rotating piece, the first pressure rod is driven to rotate through the rotating piece to exert lateral pressure on the hinge to perform horizontal load measurement and longitudinal load measurement, the vertical pressure structure is installed on the detection table and corresponds to the rotating limit position of the hinge, and is used for exerting vertical pressure on the hinge to perform vertical load measurement.The application has the effect of further improving the accuracy of the detection structure of the hinge.

Description

Technical Field

[0001] This application relates to the field of automotive body door hinge strength testing technology, and in particular to an automotive body door hinge strength testing device. Background Technology

[0002] Strength testing of automotive door hinges is a crucial step in automotive research and development, production, and quality control. To ensure driving safety, guarantee the reliability of door functions, and extend the service life of doors, it is necessary to test the strength of the hinges themselves before they are put into use in vehicles, thereby determining whether the hinges meet the process standards.

[0003] Currently, common testing methods in the field of door hinge strength testing include static pressure testing and dynamic load simulation. Static pressure testing typically involves mounting the hinge on a test platform using a fixed fixture and applying unidirectional pressure using hydraulic or pneumatic devices to test the hinge's load-bearing capacity. Dynamic load simulation, on the other hand, simulates torque changes in real-world usage scenarios, such as applying forces in different directions to the hinge using a rotating mechanism, to evaluate its performance under complex working conditions. Additionally, another method involves manually applying force to the hinge using hand tools and observing its deformation. All these methods aim to test the hinge's strength characteristics in different ways.

[0004] However, existing testing methods have certain limitations. For example, static pressure testing can only detect loads in a single direction and cannot fully reflect the performance of the hinge under multi-directional forces. Although dynamic load simulation can partially solve the problem of multi-directional testing, its structure is complex, inconvenient to adjust, and difficult to accurately align with the hinge's rotation axis, resulting in inaccurate test results. Summary of the Invention

[0005] To further improve the accuracy of hinge testing, this application provides a device for testing the strength of automotive body door hinges.

[0006] The automotive body door hinge strength testing device provided in this application adopts the following technical solution:

[0007] A device for testing the strength of a car body door hinge includes a testing platform with a fixed base mounted on it. One side of the hinge is mounted on the fixed base. A lateral pressure structure and a vertical pressure structure are mounted on the testing platform. The lateral pressure structure includes a side pressure seat, a rotating component, and a first pressure rod. The pressure seat is mounted on the testing platform via an adjustment assembly. The position of the pressure seat is adjusted by the adjustment assembly to correspond to the rotation axis of the hinge. The rotating component is mounted on the pressure seat, and the first pressure rod is mounted on the rotating component. The rotating component drives the first pressure rod to rotate, applying lateral pressure to the hinge for lateral load testing and longitudinal load testing. The vertical pressure structure is mounted on the testing platform and installed at the hinge's rotation limit position for applying vertical pressure to the hinge for vertical load testing.

[0008] By adopting the above technical solution, comprehensive strength testing of automotive door hinges can be achieved. The mounting bracket on the testing platform is used to stably install the hinges, ensuring their position remains fixed during testing. The lateral pressure structure adjusts the position of the lateral pressure seat to match the hinge's rotation axis via an adjusting component. The rotating component drives the first pressure rod to rotate, thereby applying precise and controllable lateral pressure to the hinge, completing the application and testing of lateral and longitudinal loads. The vertical pressure structure is installed according to the hinge's rotation position, applying vertical pressure to the hinge to complete the testing of vertical loads. It can also be used in conjunction with the lateral pressure structure for simultaneous testing, simulating the actual force scenarios experienced by the door when it is opened. This solution effectively improves the comprehensiveness and accuracy of the testing, ensuring that the hinge's strength performance under various stress conditions is fully verified, thus guaranteeing the safety and reliability of the vehicle.

[0009] In one specific implementation scheme, the adjustment assembly includes an adjustment motor, an adjustment screw, and an adjustment block. An adjustment groove is provided on the detection platform, which is arranged along the hinge length direction. The adjustment motor is installed in the adjustment groove, the adjustment screw is rotatably connected in the adjustment groove, and is fixedly connected to the output shaft of the adjustment motor. The adjustment block is installed at the bottom of the pressure measuring seat and is slidably connected in the adjustment groove. The adjustment block is drivenly connected to the adjustment screw.

[0010] By adopting the above technical solution, the adjustment motor drives the adjustment screw to rotate, thereby achieving precise displacement of the adjustment block in the adjustment groove and improving the automation level of the pressure measuring seat position adjustment. The driving connection method between the adjustment block and the adjustment screw ensures the stability and accuracy of the pressure measuring seat movement and improves the adaptability of the detection device to hinges of different specifications.

[0011] In one specific implementation, the rotating component includes a rotating base and a rotating motor. The pressure measuring base has a cavity. A support rod is installed at the center of the lower end of the rotating base. The support rod extends through the side wall of the pressure measuring base into the cavity. An auxiliary gear ring is installed at one end of the support rod extending into the cavity. The rotating motor is installed on the side pressure base. The output shaft of the rotating motor extends into the cavity. A drive gear is installed on the output shaft of the rotating motor. The drive gear meshes with the auxiliary gear ring for driving.

[0012] By adopting the above technical solution, the rotating seat achieves stable rotation through the cooperation of the support rod and the auxiliary gear ring. The rotating motor drives the gear to mesh with the auxiliary gear ring, which can precisely control the rotation angle and force of the rotating seat, thereby driving the first pressure rod to accurately apply lateral pressure. This solution improves the controllability and accuracy of lateral pressure application, ensures the reliability of measuring the lateral and longitudinal loads of the hinge, and further improves the detection accuracy and efficiency.

[0013] In one specific implementation, the rotary motor is provided in two sets and is symmetrically installed on both sides of the support rod, and the two drive gears are respectively symmetrically meshed with the rotary motors on both sides of the auxiliary gear.

[0014] By adopting the above technical solution, the rotary motor is configured as two sets and symmetrically installed on both sides of the support rod, which can achieve balanced drive of the auxiliary gear ring, effectively avoiding the uneven force distribution problem that may be caused by unilateral drive, thereby improving the stability of the rotary seat rotation. The two sets of drive gears are symmetrically meshed on both sides of the auxiliary gear, further ensuring the uniform distribution of driving force, enhancing the accuracy and reliability of the first pressure rod when applying lateral pressure, and improving the accuracy of hinge strength detection.

[0015] In one specific implementation scheme, the first pressure rod includes a first rod body, a second rod body, and a third rod body. The first rod body is slidably connected to the rotating seat and can move along the moving direction of the pressure measuring seat. The second rod body is arranged perpendicular to the first rod body and is hinged perpendicularly. The third rod body is arranged perpendicular to the second rod body. A lateral pressure measuring cylinder is installed on the third rod body. A lateral pressure block is installed on the piston rod of the pressure measuring cylinder. The piston rod of the lateral pressure measuring cylinder is hinged perpendicularly.

[0016] By adopting the above technical solution, the combined design of the first, second, and third rods can accurately position the lateral pressure measuring cylinder, ensuring that the pressure direction is perpendicular to the hinge, thereby improving the accuracy of lateral pressure application. The lateral pressure block on the piston rod of the lateral pressure measuring cylinder further ensures stable pressure transmission, effectively improving the reliability of hinge lateral load measurement and the accuracy of test results.

[0017] In one specific implementation scheme, the vertical pressure applying mechanism includes a support frame, a lateral moving member, a longitudinal moving member, and a vertical pressure applying member. The support frame is mounted on the testing platform, the lateral moving member is mounted on the upper end of the support frame, the longitudinal moving member is mounted on the lateral moving member, and the vertical pressure applying member is mounted on the longitudinal moving member. The lateral moving member and the longitudinal moving member drive the vertical test pressure member to change position as the hinge rotates.

[0018] By adopting the above technical solution, the vertical pressure applying mechanism can flexibly adjust the position of the vertical pressure applying component according to the rotation position of the hinge. Specifically, the support frame provides a stable installation foundation for the entire vertical pressure applying mechanism, and the coordinated use of the lateral and longitudinal moving components enables precise displacement of the vertical pressure applying component in space, thereby ensuring that the vertical pressure applying component can accurately follow the rotation limit position of the hinge for adjustment. This design effectively improves the adaptability and accuracy of the detection device, making the process of applying vertical pressure to the hinge more reliable, thereby improving the accuracy and efficiency of vertical load measurement.

[0019] In one specific implementation, the horizontal moving component includes a horizontal motor, a horizontal lead screw, a horizontal slide rail, and a moving seat. The horizontal slide rail is mounted on a support frame, the horizontal motor is mounted on the horizontal slide rail, the horizontal lead screw is arranged along the length of the horizontal slide rail and is fixedly connected to the output shaft of the horizontal motor, and the moving seat is slidably connected to the horizontal slide rail and is drivenly connected to the horizontal lead screw.

[0020] By adopting the above technical solution, a horizontal motor drives a horizontal lead screw to rotate, and through the lead screw transmission principle, the moving seat moves precisely along the horizontal slide rail, ensuring that the vertical pressure mechanism can accurately align with the test position of the hinge. The horizontal slide rail provides stable guiding support for the moving seat, avoiding deviations during movement, thereby improving test accuracy. This structure is compact and easy to operate, effectively improving testing efficiency and ensuring the reliability and accuracy of automotive body door hinge strength testing.

[0021] In one specific implementation scheme, the longitudinal moving member structure is configured the same as the transverse moving member structure, and the transverse moving member is positioned on the plate surface when the vertical hinge is not rotated, and the moving direction of the longitudinal moving member is perpendicular to the moving direction of the transverse moving member.

[0022] By adopting the above technical solutions, the structural consistency of the lateral and longitudinal moving parts simplifies the device design and reduces manufacturing costs and maintenance difficulty. The lateral moving part is set perpendicular to the plate surface when the hinge is not rotated, ensuring that the vertical pressure-applying part can accurately follow its position change during hinge rotation. The longitudinal moving part moves in a direction perpendicular to the lateral moving part, achieving precise positioning of the vertical pressure-applying part in three-dimensional space, improving the accuracy of vertical pressure application, and thus enhancing the reliability of the test results.

[0023] In one specific implementation, the vertical pressure application component includes a pressure cylinder and a vertical pressure block, with the pressure cylinder mounted on a movable base and the vertical pressure block mounted on the piston rod of the pressure cylinder.

[0024] By adopting the above technical solution, the vertical pressure application component consists of a pressure cylinder and a vertical pressure block. The pressure cylinder is mounted on a movable base, and the vertical pressure block is mounted on the piston rod of the pressure cylinder. This solution enables precise vertical pressure application to the hinge, ensuring the controllability of the pressure application point. Simultaneously, the pressure is adjusted through the extension and retraction of the cylinder, improving the automation and flexibility of the testing process.

[0025] In one specific implementation, the hinge is bolted to a mounting base.

[0026] By adopting the above technical solution, the hinge is bolted to the fixed base, making the connection between the hinge and the fixed base more convenient and quick, while also facilitating disassembly and replacement. This detachable connection method improves the flexibility and practicality of the testing device, enabling it to adapt to the testing needs of hinges of different specifications, reducing maintenance costs and improving testing efficiency.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. By combining the lateral pressure structure and the vertical pressure structure, lateral pressure and vertical pressure can be applied to the hinge respectively, realizing comprehensive detection of the hinge's lateral load, longitudinal load and vertical load, solving the problem of insufficient detection in a single direction in the existing technology;

[0029] 2. The introduction of the adjustment component allows the position of the pressure sensor to be precisely adjusted to correspond to the rotation axis of the hinge, ensuring the accuracy of the pressure application point and thus improving the reliability of the test results;

[0030] 3. The vertical pressure structure can be adjusted according to the rotation limit position of the hinge, effectively simulating complex working conditions in actual use and making up for the shortcomings of traditional dynamic load simulation structures that are complex and inconvenient to adjust. Attached Figure Description

[0031] Figure 1 This is a structural schematic diagram of an embodiment of this application.

[0032] Figure 2 This is a right view of an embodiment of this application.

[0033] Figure 3 for Figure 2 A cross-sectional view along the AA direction.

[0034] Figure 4 for Figure 3 Enlarged view of part A in the middle.

[0035] Explanation of reference numerals in the attached drawings: 1. Testing table; 2. Fixed base; 3. Lateral pressure structure; 31. Pressure measuring base; 32. Rotating component; 321. Rotating base; 322. Rotary motor; 323. Support rod; 324. Drive gear; 325. Auxiliary gear ring; 33. First pressure rod; 331. First rod body; 332. Second rod body; 333. Third rod body; 334. Pressure measuring cylinder; 335. Lateral pressure block; 4. Vertical pressure structure; 41. Support frame; 42. Lateral moving component; 43. Longitudinal moving component; 44. Vertical pressure component; 5. Adjustment assembly; 51. Adjustment motor; 52. Adjustment screw; 53. Adjustment block. Detailed Implementation

[0036] This application discloses a device for testing the strength of automotive body door hinges.

[0037] like Figure 1 As shown, the automotive body door hinge strength testing device includes a testing platform 1, a fixed base 2, a lateral pressure structure 3, and a vertical pressure structure 4. The fixed base 2 is mounted on the testing platform 1, and the hinge is bolted to the fixed base 2. The lateral pressure structure 3 and the vertical pressure structure 4 are also mounted on the testing platform 1, which respectively measure the lateral, longitudinal, and vertical loads on the hinge, thereby comprehensively evaluating the hinge's strength performance.

[0038] like Figure 2 As shown, the lateral pressure structure 3 includes a lateral pressure seat, a rotating component, and a pressure rod. The lateral pressure seat is mounted on the testing table 1 via an adjusting assembly 5, which adjusts the position of the lateral pressure seat to correspond to the rotation axis of the hinge. The rotating component is mounted on the lateral pressure seat and drives the pressure rod to rotate, thereby applying lateral pressure to the hinge and detecting both lateral and longitudinal loads. The vertical pressure structure 4 is mounted on the testing table 1 and positioned corresponding to the hinge's rotation position. It applies vertical pressure to the hinge to detect vertical loads.

[0039] like Figure 3-4 As shown, specifically, the adjustment assembly 5 includes a motor, a lead screw, and an adjustment block 53. The motor is installed in an adjustment slot on the testing table 1, which is set along the length of the hinge. The lead screw is rotatably connected in the adjustment slot and fixedly connected to the motor output shaft. The adjustment block 53 is installed at the bottom of the pressure testing seat 31, slidably connected in the adjustment slot, and driven by the lead screw. By driving the lead screw to rotate through the motor, the adjustment block 53 drives the side pressure seat to move along the adjustment slot, thereby precisely aligning it with the rotation axis of the hinge.

[0040] Specifically, the rotating component includes a rotating base 321 and a motor. A cavity is formed within the pressure measuring base 31. A support rod 323 is mounted at the lower center of the rotating base 321, extending through the side wall of the pressure measuring base 321 into the cavity. A gear ring is mounted on one end of the support rod extending into the cavity. The motor is mounted on the side pressure base, with its output shaft extending into the cavity and equipped with a drive gear 324. The drive gear 324 meshes with the gear ring, driving the rotating base 321 to rotate via the motor, thereby causing the pressure rod to apply lateral pressure to the hinge.

[0041] The rotating seat 321 achieves stable rotation through the cooperation of the support rod 323 and the auxiliary gear ring 325. The rotary motor 322 drives the gear 324 to mesh with the auxiliary gear ring 325, which can precisely control the rotation angle and force of the rotating seat 321, thereby driving the first pressure rod 33 to accurately apply lateral pressure. This solution improves the controllability and accuracy of lateral pressure application, ensures the reliability of measuring the lateral and longitudinal loads of the hinge, and further improves the detection accuracy and efficiency.

[0042] To improve the stability of the rotating base 321, two sets of motors are installed symmetrically on both sides of the support rod 323. The two sets of motors drive the corresponding drive gears 324 respectively. The two drive gears 324 are symmetrically meshed on both sides of the gear ring, thereby achieving synchronous drive on both sides and ensuring the smooth operation of the rotating base 321.

[0043] Specifically, the pressure rod includes a first rod body 331, a second rod body 332, and a third rod body 333. The first rod body 331 is mounted on a rotating base 321, which has a sliding groove. The first rod body 331 is slidably connected within the sliding groove. The first rod body 331 is driven to slide by a motor and a lead screw, adjusting the position of the pressure rod. The second rod body 332 is perpendicular to the first rod body 331 and perpendicular to the hinge. The third rod body 333 is perpendicular to the second rod body 332. A pressure-measuring cylinder 334 is mounted on the third rod body 333. A lateral pressure block 335 is mounted on the piston rod of the pressure-measuring cylinder 334, which is perpendicular to the hinge. By extending or retracting the piston rod of the pressure-measuring cylinder 334, the lateral pressure block 335 is pushed to contact the hinge, achieving precise application of lateral pressure.

[0044] The combined design of the first rod 331, the second rod 332, and the third rod 333 enables precise positioning of the lateral pressure measuring cylinder 334, ensuring that the pressure direction is perpendicular to the hinge, thereby improving the accuracy of lateral pressure application. The lateral pressure block 335 on the piston rod of the lateral pressure measuring cylinder 334 further ensures stable pressure transmission, effectively improving the reliability of hinge lateral load measurement and the accuracy of test results.

[0045] Specifically, the vertical pressure applying structure 4 includes a support frame 41, a lateral moving member 42, a longitudinal moving member 43, and a vertical pressure applying member 44. The support frame 41 is mounted on the testing table 1, the lateral moving member 42 is mounted on the upper end of the support frame 41, the longitudinal moving member 43 is mounted on the lateral moving member 42, and the vertical pressure applying member 44 is mounted on the longitudinal moving member 43. Through the cooperation of the lateral moving member 42 and the longitudinal moving member 43, the vertical pressure applying member 44 is driven to change position as the hinge rotates, thereby accurately applying vertical pressure to different positions of the hinge.

[0046] The vertical pressure applying mechanism can flexibly adjust the position of the vertical pressure applying component 44 according to the rotation position of the hinge. Specifically, the support frame 41 provides a stable mounting base for the entire vertical pressure applying mechanism. The coordinated use of the lateral moving component 42 and the longitudinal moving component 43 enables the precise displacement of the vertical pressure applying component 44 in space, thereby ensuring that the vertical pressure applying component 44 can accurately follow the rotation limit position of the hinge for adjustment. This design effectively improves the adaptability and accuracy of the detection device, making the process of applying vertical pressure to the hinge more reliable, thereby improving the accuracy and efficiency of vertical load measurement.

[0047] Specifically, the lateral moving component 42 includes a horizontal motor, a horizontal lead screw, a horizontal slide rail, and a moving base. The horizontal slide rail is mounted on the support frame 41, the horizontal motor is mounted on the horizontal slide rail, and the horizontal lead screw is arranged along the length of the horizontal slide rail and fixedly connected to the output shaft of the horizontal motor. The moving base is slidably connected to the horizontal slide rail and driven by the horizontal lead screw. By driving the horizontal lead screw to rotate through the horizontal motor, the moving base moves along the horizontal slide rail, thereby achieving lateral position adjustment.

[0048] The longitudinal moving member 43 has the same structure as the transverse moving member 42, but its moving direction is perpendicular to the moving direction of the transverse moving member 42. Through the cooperation of the horizontal moving member and the longitudinal moving member 43, the vertical pressure member 44 is precisely positioned in the plane.

[0049] Specifically, the vertical pressure applying component 44 includes a pressure applying cylinder and a vertical pressure applying block. The pressure applying cylinder is mounted on the movable base, and the vertical pressure applying block is mounted on the piston rod of the pressure applying cylinder. By extending and retracting the piston rod of the pressure applying cylinder, the vertical pressure applying block is driven to contact the hinge, thereby applying vertical pressure.

[0050] The implementation principle of the automotive body door hinge strength testing device in this application embodiment is as follows: Through the coordinated action of the lateral pressure structure 3 and the vertical pressure structure 4, precise pressure testing of the hinge in multiple directions (lateral, longitudinal, and vertical) is achieved. The introduction of the adjustment component 5 ensures that the lateral pressure structure 3 can accurately align with the hinge's rotation axis, improving testing accuracy. The dual-motor drive design enhances the stability of the rotating seat 321, avoiding deviations caused by unilateral force. The cooperation of the lateral moving component 42 and the longitudinal moving component 43 enables flexible positioning of the vertical pressure component 44 in the plane, further improving the flexibility and accuracy of the testing. The overall solution simplifies the structural design, reduces operational difficulty, and significantly improves testing efficiency while ensuring testing accuracy.

[0051] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A device for testing the strength of automotive body door hinges, characterized in that: The system includes a testing platform (1), on which a fixed base (2) is installed. One side of the hinge is installed on the fixed base (2). A lateral pressure structure (3) and a vertical pressure structure (4) are installed on the testing platform (1). The lateral pressure structure (3) includes a pressure measuring seat (31), a rotating component (32), and a first pressure rod (33). The pressure measuring seat (31) is installed on the testing platform (1) through an adjustment component (5). The position of the pressure measuring seat (31) is adjusted by the adjustment component (5) to correspond to the rotation axis of the hinge. The rotating component (32) is installed on the pressure measuring seat (31). The first pressure rod (33) is installed on the rotating component (32). The rotating component (32) drives the first pressure rod (33) to rotate and apply lateral pressure to the hinge for transverse load measurement and longitudinal load measurement. The vertical pressure structure (4) is installed on the testing platform (1) and is installed at the limit position of the hinge rotation. It is used to apply vertical pressure to the hinge for vertical load measurement. The rotating component (32) includes a rotating base (321) and a rotating motor (322). The pressure measuring base (31) has a cavity. The lower center of the rotating base (321) is mounted on a support rod (323). The support rod (323) extends through the side wall of the pressure measuring base (31) into the cavity. An auxiliary gear ring (325) is installed at one end of the support rod (323) extending into the cavity. The rotating motor (322) is mounted on the pressure measuring base (31). The output shaft of the rotating motor (322) extends into the cavity. A drive gear (324) is mounted on the output shaft of the rotating motor (322). The drive gear (324) meshes with the auxiliary gear ring (325) for driving. The first pressure rod (33) includes a first rod body (331), a second rod body (332) and a third rod body (333). The first rod body (331) is slidably connected to the rotating seat (321) and can move along the moving direction of the pressure measuring seat (31). The second rod body (332) is set perpendicular to the first rod body (331) and is set with a vertical hinge. The third rod body (333) is set perpendicular to the second rod body (332). A lateral pressure measuring cylinder (334) is installed on the third rod body (333). A lateral pressure block (335) is installed on the piston rod of the pressure measuring cylinder (334). The piston rod of the lateral pressure measuring cylinder (334) is set with a vertical hinge. The adjustment assembly (5) includes an adjustment motor (51), an adjustment screw (52), and an adjustment block (53). An adjustment groove is provided on the detection table (1), which is set along the hinge length direction. The adjustment motor (51) is installed in the adjustment groove. The adjustment screw (52) is rotatably connected in the adjustment groove and fixedly connected to the output shaft of the adjustment motor (51). The adjustment block (53) is installed at the bottom of the pressure measuring seat (31) and is slidably connected in the adjustment groove. The adjustment block (53) is drivenly connected to the adjustment screw (52).

2. The automobile body door hinge strength testing apparatus according to claim 1, characterized by: Two sets of rotary motors (322) are provided and are symmetrically installed on both sides of the support rod (323). Two drive gears (324) are symmetrically meshed with the rotary motors (322) on both sides of the auxiliary gears.

3. The automobile body door hinge strength testing device according to claim 1, characterized in that: The vertical pressure structure (4) includes a support frame (41), a transverse moving part (42), a longitudinal moving part (43), and a vertical pressure part (44). The support frame (41) is installed on the testing table (1), the transverse moving part (42) is installed on the upper end of the support frame (41), the longitudinal moving part (43) is installed on the transverse moving part (42), and the vertical pressure part (44) is installed on the longitudinal moving part (43). The transverse moving part (42) and the longitudinal moving part (43) drive the vertical test piece to change position as the hinge rotates.

4. The automobile body door hinge strength testing device according to claim 3, characterized in that: The lateral moving part (42) includes a horizontal motor, a horizontal lead screw, a horizontal slide rail and a moving seat. The horizontal slide rail is mounted on the support frame (41), the horizontal motor is mounted on the horizontal slide rail, the horizontal lead screw is set along the length of the horizontal slide rail and is fixedly connected to the output shaft of the horizontal motor, and the moving seat is slidably connected to the horizontal slide rail and is drivenly connected to the horizontal lead screw.

5. The automobile body door hinge strength testing device according to claim 3, characterized in that: The longitudinal moving part (43) has the same structure as the transverse moving part (42), and the transverse moving part (42) is set on the plate surface when the vertical hinge is not rotated. The moving direction of the longitudinal moving part (43) is perpendicular to the moving direction of the transverse moving part (42).

6. The automobile body door hinge strength testing device according to claim 3, characterized in that: The vertical pressure application component (44) includes a pressure testing cylinder (334) and a vertical pressure application block. The pressure testing cylinder (334) is mounted on a movable seat, and the vertical pressure application block is mounted on the piston rod of the pressure testing cylinder (334).

7. The automobile body door hinge strength testing device according to claim 1, characterized in that: The hinge is mounted on the fixed base (2) by bolts.

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