Door hinge detection device and detection method

Abstract

The present invention discloses a door hinge detection device and a detection method, which belongs to the technical field of automobile parts detection. The technical solution is a door hinge detection device, including a wheel limit structure and a baffle structure, a door reset structure and a hydraulic rod for knocking the door. The hydraulic rod at a distance from the door is used to simulate the action of a person closing the door externally; the limit structure and the baffle structure can be used to limit the door during the detection process; in order to facilitate repeated detection of the door, a structure for driving the limit column and the door reset rod to be linked is also provided; the position of the hydraulic rod can be adjusted, and can be arbitrarily aligned with different positions of the door, making the hinge detection more flexible. The beneficial effects of the present invention are: providing a door hinge detection device and a detection method.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile component detection, and in particular relates to a door hinge detection device and a detection method. Background Art

[0002] Automobile door hinges generally include hinge shafts, hinge heads, and hinge bases. They are key components that connect the door and the body of the car, and are directly related to the opening and closing functions of the door. If there is a problem with the hinge, such as deformation or looseness, the door may not be able to close tightly, affecting the sound insulation and waterproofing effects in the car, and even affecting the aerodynamic performance of the vehicle. During the use of the car, the door will undergo frequent opening and closing operations, and the quality of the hinge directly affects the service life of the door. Therefore, the detection of automobile door hinges is to ensure the safety, durability, sealing, comfort and compliance of the vehicle, and is an indispensable part of the automobile manufacturing and maintenance process. At present, the detection of automobile hinges in the prior art is generally to directly drive the door to rotate through a power device (motor). This detection method makes the door panel relatively stable during the rotation process, which deviates from the closing action in real life. In view of this problem, a door hinge detection device and detection method are provided. Summary of the invention

[0003] The object of the present invention is to provide a door hinge detection device and a detection method.

[0004] The present invention is realized by the following measures: a vehicle door hinge detection device, characterized in that it comprises a bottom plate fixed on the ground, a column is fixedly arranged above one end of the bottom plate, a vehicle door is connected to the column through a hinge, two hinge bases are fixed on the column, and two hinge heads are fixed on the vehicle door;

[0005] A lower sleeve concentric with the hinge shaft is fixedly arranged at the lower part of the outer wall of the column, a lower rotating shaft is rotatably arranged in the lower sleeve, a rotating plate is fixedly arranged at the upper end of the lower rotating shaft, screws are rotatably arranged at both ends of the rotating plate, a lifting plate is arranged on the two screws through threaded connection, and a hydraulic rod is slidably arranged on the lifting plate;

[0006] A horizontal plate is fixedly arranged on the column and below the vehicle door, a limiting structure is arranged on one side of the horizontal plate close to the hydraulic rod, and a baffle structure is fixedly arranged on the other side; the limiting structure comprises a boss fixedly arranged below the horizontal plate, a blind hole extending to the boss is opened on the horizontal plate, a limiting column is slidably arranged in the blind hole, the bottom wall of the limiting column is connected to the bottom wall of the blind hole through a spring 1, the upper end of the limiting column extends out of the horizontal plate and a slope 1 is arranged on the extended end, the slope 1 is located on a side close to the hydraulic rod and the upper end of the slope 1 is close to the baffle structure;

[0007] The door reset structure also includes a door reset structure, which includes an upper sleeve fixedly arranged on the upper part of the outer wall of the column, the upper sleeve is concentric with the hinge shaft and is internally rotatably provided with an upper rotating shaft concentric therewith, the upper end of the upper rotating shaft is fixedly provided with a rotating rod, and a door reset rod is fixedly provided below the outer end of the rotating rod, a pulley 1 is fixedly provided on the horizontal plate and close to the boss, a lower external connecting plate is fixedly provided on the side of the horizontal plate away from the hydraulic rod, a pulley 2 is fixedly provided on the outer side of the lower external connecting plate, an upper external connecting plate away from the hydraulic rod is fixedly provided on the upper end of the column, and downward vertical plates are provided on both sides of the upper external connecting plate, the two vertical plates are connected below by a mounting plate, and a pulley 3 is fixedly provided on the mounting plate. A trigger rod is slidably provided on the upper external plate and located on the inner side of the pulley three, and a mounting block is fixedly provided at the lower end of the trigger rod, the mounting block and the upper external plate are connected by a spring two, the spring two is sleeved on the trigger rod, a steel wire rope is provided at the outer end of the mounting block, the other end of the steel wire rope is sequentially passed over the top of the pulley three, the outer side of the pulley two, the bottom of the pulley one, extends from the bottom of the boss into the blind hole and is fixedly connected to the limiting column; an arc-shaped pressure rod is fixedly provided on the rotating rod, the arc-shaped pressure rod is concentrically arranged with the upper rotating shaft, the arc-shaped pressure rod is located directly above the trigger rod, the lower end surface of the arc-shaped pressure rod is lower than the lower end surface of the rotating rod, and the two lower end surfaces are transitioned by an inclined plane two;

[0008] When the lower part of the second inclined surface contacts the upper end surface of the trigger rod, the upper end of the limit column extends out of the horizontal plate, and when the lower end surface of the arc-shaped pressure rod contacts the upper end surface of the trigger rod, the limit column is hidden in the blind hole;

[0009] When the vehicle door is parallel to the horizontal plate, the upper rotating shaft rotates, driving the rotating rod, the arc pressure rod and the vehicle door reset rod to rotate. The lower end surface of the arc pressure rod first contacts the trigger rod, the mounting block moves downward, and the limit column is pulled downward from the bottom of the limit column by the steel wire rope. The upper end of the limit column is hidden in the blind hole, and the vehicle door is disengaged from the limit of the limit column. The vehicle door reset rod contacts the inner side of the vehicle door while continuing to rotate and drives the vehicle door to move in the direction of the hydraulic rod.

[0010] The two screws are preferably located on the outside of the door, the screw close to the hinge can be slightly located on the inside of the door, and the screw far away from the hinge must be located on the outside of the door.

[0011] Furthermore, it also includes a motor 1 for driving the upper rotating shaft to rotate, the motor 1 is fixed on the column, a gear 1 is arranged on the motor shaft, the lower end of the upper rotating shaft extends out of the upper sleeve and a gear 2 is arranged on the extended end to mesh with the gear 1. The upper rotating shaft is driven to rotate by the motor 1, which drives the rotating rod to rotate, and then the door is pushed to reset through the door reset rod.

[0012] In order to facilitate the placement of the motor 1, the column includes an upper part and a lower part, the motor 1 is located between the upper part and the lower part, a motor fixing plate is fixedly provided at the upper end of the lower part, the motor 1 is fixed on the motor fixing plate, a vertical column is fixedly provided on the motor fixing plate and located on the outside of the motor 1, and the upper end of the vertical column is fixedly connected to the upper part through a horizontal column.

[0013] Furthermore, the baffle structure includes a baffle perpendicular to the horizontal plate, and a buffer pad is provided on a side of the baffle facing the hydraulic rod, so that the vehicle door can be protected.

[0014] Furthermore, the buffer pad is generally made of rubber or sponge material.

[0015] Furthermore, the upper end surface of the baffle structure is not higher than the door glass.

[0016] Furthermore, the upper end surface of the trigger rod is a spherical surface.

[0017] Furthermore, a pulley four corresponding to the pulley three is arranged below the upper external plate, and the steel wire rope is located between the two pulleys.

[0018] Furthermore, the lifting plate is provided with a strip opening, the outer end of the strip opening is beyond the door, a stud is slidably provided in the strip opening, a clamp is provided at the upper end of the stud, the cylinder outer wall of the hydraulic rod is fixed to the stud through the clamp, and the lower end of the stud extends out of the lifting plate and is fixed by a nut. The stud moves along the strip opening to adjust the horizontal position of the hydraulic rod.

[0019] A motor bracket is fixedly arranged at the middle position of the outer side of the rotating plate, a second motor is fixedly arranged on the motor bracket, and a motor shaft of the second motor is respectively connected to two lead screws through a transmission belt.

[0020] Furthermore, a wheel with a braking function can be arranged below the motor bracket according to actual conditions.

[0021] Furthermore, a plurality of reinforcing rods are arranged on a side of the baffle away from the hydraulic rod.

[0022] This embodiment provides a detection method based on the vehicle door hinge detection device, which is characterized by comprising:

[0023] S1, initial position, ensure that the lower part of the second inclined surface is in contact with the trigger rod, even if the limit column extends out of the horizontal plate; install the door hinge to be tested on the column and the door;

[0024] S2. According to the opening and closing angle of the vehicle door to be detected, the lower rotating shaft is rotated to make it consistent with the opening and closing angle to be detected, and the distance between the movable end of the hydraulic rod and the force point of the vehicle door is determined;

[0025] S3, the rotating rod is rotated in the direction of the hydraulic rod, the lower end surface of the arc-shaped pressure rod contacts the trigger rod and presses the trigger rod, at this time the second spring is compressed, the mounting block moves downward and the limit column is pulled from below the limit column by the wire rope to move downward, and the limit column is hidden in the blind hole;

[0026] S4, continue to rotate the rotating rod, the door reset rod contacts the door, and drives the door to move toward the hydraulic rod until the rotation angle of the door and the lower rotating shaft are consistent, and then the rotating rod is reset;

[0027] S5, rotating the lead screw, adjusting the position of the lifting plate according to the force point of the door, so that the movable end of the hydraulic rod and the force point are on the same horizontal plane;

[0028] S6. Horizontally adjust the position of the hydraulic rod on the lifting plate so that the movable end is aligned with the force point of the door;

[0029] S7, starting the hydraulic rod to hit the force point of the door through the movable end, driving the door to rotate, and the door contacts the inclined surface and presses the limit column during the rotation process. When the door passes the limit column, the door is blocked between the limit column and the baffle structure;

[0030] S8, repeat the steps of S3-S7 repeatedly. In this way, the quality and life of the door hinge 1 can be tested according to the test records.

[0031] Also includes:

[0032] S9. After the inspection of the door hinge 1 is completed, the door hinge 1 is removed; and the door hinge 2 from the same batch is installed on the pillar and the door;

[0033] S10, changing the force point of the door, repeating steps S3-S7 with the same door opening and closing angle, the same distance between the movable end of the hydraulic rod and the force point, and the same number of tests.

[0034] The force points are generally selected from the positions where people often touch their hands when closing the car door in daily life. The actual force points of the door when closing the door are generally located on the outer edge of the door above the door handle, which is far from the hinge and easily causes the door to shake. The device detects different force points of the door and can detect the impact of different force points of the door on the quality and life of the hinge.

[0035] The beneficial effects of the technical solution provided by the embodiment of the present invention are: the action of simulating a person closing the car door from the outside is realized by a hydraulic rod that is at a distance from the car door; the position of the car door can be limited during the detection process by a limiting structure and a baffle structure; in order to facilitate repeated detection of the car door, a structure for driving the limiting column and the car door reset rod to be linked is also provided; the position of the hydraulic rod can be adjusted and can be arbitrarily aligned with different positions of the car door, making the hinge detection more flexible. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings used in the embodiments. Obviously, the drawings listed below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0037] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present invention;

[0038] Figure 2 yes Figure 1 A partial enlarged view of the middle A;

[0039] Figure 3 is with Figure 1 Schematic diagram of the overall structure at different angles;

[0040] Figure 4 yes Figure 3 A partial enlarged view of point B in the middle;

[0041] Figure 5 yes Figure 3 A partial enlarged view of point C in the middle;

[0042] Figure 6 It is a partial structural schematic diagram of an embodiment of the present invention;

[0043] Figure 7 yes Figure 6 A partial enlarged view of point D in the middle;

[0044] Figure 8 is with Figure 6 Schematic diagram of the structure at different angles;

[0045] Fig. 9 yes Figure 8A partial enlarged view of point E in the middle;

[0046] Fig.10 yes Figure 8 A partial enlarged view of point F in the middle;

[0047] Fig.11 It is a structural diagram of the base plate and its related parts.

[0048] In the attached drawings, the components represented by the reference numerals are as follows: 1. bottom plate; 2. upright column; 3. lower sleeve; 4. rotating plate; 5. lead screw; 6. lifting plate; 7. hydraulic rod; 8. upper sleeve; 9. rotating rod; 10. door reset rod; 11. arc pressure rod; 12. boss; 13. limit column; 14. upper external plate; 15. upright plate; 16. trigger rod; 17. spring 2; 18. mounting block; 19. lower external plate; 20. pulley 1; 21. pulley 2; 22. wire rope; 23. pulley 3; 24. pulley 4; 25. door; 26. hinge base; 2 7. Hinge head; 28. Hinge shaft; 29. ​​Motor 1; 30. Gear 1; 31. Gear 2; 33. Baffle; 34. Buffer pad; 201. Lower part; 202. Upper part; 203. Horizontal plate; 204. Motor fixing plate; 205. Vertical column; 301. Lower shaft; 502. Transmission belt; 503. Motor 2; 504. Motor bracket; 601. Strip mouth; 701. Hoop; 702. Stud; 703. Nut; 801. Upper shaft; 1101. Inclined surface 2; 1201. Blind hole; 1301. Inclined surface 1; 1501. Mounting plate. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. Of course, the specific embodiments described here are only used to explain the present invention and are not used to limit the present invention.

[0050] See also Figure 1-Figure 11 A vehicle door hinge detection device, characterized in that it comprises a base plate 1 fixed on the ground, a column 2 is fixedly arranged above one end of the base plate 1, a vehicle door 25 is connected to the column 2 through a hinge, two hinge bases 26 are fixed on the column 2, and two hinge heads 27 are fixed on the vehicle door 25;

[0051] A lower sleeve 3 is fixedly provided at the lower part of the outer wall of the column 2 and is concentric with the hinge shaft 28. A lower rotating shaft 301 is rotatably provided in the lower sleeve 3. A rotating plate 4 is fixedly provided at the upper end of the lower rotating shaft 301. Lead screws 5 are rotatably provided at both ends of the rotating plate 4. Lifting plates 6 are provided on the two lead screws 5 through threaded connection. A hydraulic rod 7 is slidably provided on the lifting plates 6.

[0052] A horizontal plate 203 is fixedly arranged on the column 2 and below the vehicle door 25, a limiting structure is arranged on one side of the horizontal plate 203 close to the hydraulic rod 7, and a baffle structure is fixedly arranged on the other side; the limiting structure includes a boss 12 fixedly arranged below the horizontal plate 203, a blind hole 1201 extending to the boss 12 is opened on the horizontal plate 203, a limiting column 13 is slidably arranged in the blind hole 1201, the bottom wall of the limiting column 13 is connected to the bottom wall of the blind hole 1201 through a spring 1, the upper end of the limiting column 13 extends out of the horizontal plate 203 and a slope 1301 is arranged on the extended end, the slope 1301 is located on the side close to the hydraulic rod 7 and the upper end of the slope 1301 is close to the baffle structure;

[0053] The door 25 also includes a reset structure, which includes an upper sleeve 8 fixedly arranged on the upper part of the outer wall of the pillar 2, the upper sleeve 8 is concentric with the hinge shaft 28 and is internally rotatably provided with an upper rotating shaft 801 concentric therewith, a rotating rod 9 is fixedly arranged on the upper end of the upper rotating shaft 801, a door reset rod 10 is fixedly arranged on the lower outer end of the rotating rod 9, a pulley 20 is fixedly arranged on the horizontal plate 203 and close to the boss 12, a lower external connecting plate 19 is fixedly arranged on the side of the horizontal plate 203 away from the hydraulic rod 7, a pulley 21 is fixedly arranged on the outer side of the lower external connecting plate 19, an upper external connecting plate 14 away from the hydraulic rod 7 is fixedly arranged on the upper end of the pillar 2, downwardly facing vertical plates 15 are arranged on both sides of the upper external connecting plate 14, the two vertical plates 15 are connected below by a mounting plate 1501, and a pulley 3 2 is fixedly arranged on the mounting plate 1501. 3. A trigger rod 16 is slidably provided on the upper external plate 14 and located on the inner side of the pulley three 23. A mounting block 18 is fixedly provided at the lower end of the trigger rod 16. The mounting block 18 and the upper external plate 14 are connected by a spring two 17. The spring two 17 is sleeved on the trigger rod 16. A steel wire rope 22 is provided at the outer end of the mounting block 18. The other end of the steel wire rope 22 passes through the upper side of the pulley three 23, the outer side of the pulley two 21, the lower side of the pulley one 20 in sequence, and extends from the lower side of the boss 12 into the blind hole 1201 and is fixedly connected to the limit column 13. An arc pressure rod 11 is fixedly provided on the rotating rod 9. The arc pressure rod 11 is concentrically arranged with the upper rotating shaft 801. The arc pressure rod 11 is located directly above the trigger rod 16. The lower end surface of the arc pressure rod 11 is lower than the lower end surface of the rotating rod 9 and the two lower end surfaces are transitioned by the inclined surface two 1101.

[0054] The lower part of the second inclined surface 1101 contacts the upper end surface of the trigger rod 16, the upper end of the limiting column 13 extends out of the horizontal plate 203, the lower end surface of the arc pressure rod 11 contacts the upper end surface of the trigger rod 16, and the limiting column 13 is hidden in the blind hole 1201;

[0055] When the car door 25 is parallel to the horizontal plate 203, the upper rotating shaft 801 rotates, driving the rotating rod 9, the arc pressure rod 11 and the car door reset rod 10 to rotate. The lower end surface of the arc pressure rod 11 first contacts the trigger rod 16, the mounting block 18 moves downward, and the limit column 13 is pulled downward from the bottom of the limit column 13 by the wire rope 22. The upper end of the limit column 13 is hidden in the blind hole 1201, and the car door 25 is disengaged from the limit of the limit column 13. The car door reset rod 10 contacts the inner side of the car door 25 while continuing to rotate and drives the car door 25 to move in the direction of the hydraulic rod 7.

[0056] The two lead screws 5 are preferably located on the outside of the vehicle door 25 . The lead screw 5 close to the hinge can be located slightly inside the vehicle door 25 , and the lead screw 5 away from the hinge must be located on the outside of the vehicle door 25 .

[0057] The upper rotating shaft 801 is also provided with a motor 29 for driving the upper rotating shaft 801 to rotate. The motor 29 is fixed on the column 2, and a gear 30 is arranged on the motor shaft. The lower end of the upper rotating shaft 801 extends out of the upper sleeve 8, and the extended end is provided with a gear 2 31 meshing with the gear 30. The upper rotating shaft 801 is driven to rotate by the motor 29, and the rotating rod 9 is driven to rotate, and then the door 25 is pushed to reset through the door reset rod 10.

[0058] In order to facilitate the placement of motor 29, the column 2 includes an upper part 202 and a lower part 201, and the motor 29 is located between the upper part 202 and the lower part 201. A motor fixing plate 204 is fixedly provided at the upper end of the lower part 201, and the motor 29 is fixed on the motor fixing plate 204. A vertical column 205 is fixedly provided on the motor fixing plate 204 and located on the outside of the motor 29, and the upper end of the vertical column 205 is fixedly connected to the upper part 202 through a horizontal column.

[0059] The baffle structure includes a baffle 33 perpendicular to the horizontal plate 203 , and a buffer pad 34 is provided on a side of the baffle 33 facing the hydraulic rod 7 , so that the vehicle door 25 can be protected.

[0060] The buffer pad 34 is generally made of rubber or sponge.

[0061] The upper end surface of the baffle structure is not higher than the door 25 glass.

[0062] The upper end surface of the trigger rod 16 is a spherical surface.

[0063] A pulley four 24 corresponding to the pulley three 23 is arranged below the upper external plate 14, and the wire rope 22 is located between the two pulleys.

[0064] The lifting plate 6 is provided with a strip opening 601, the outer end of the strip opening 601 is beyond the door 25, a stud 702 is slidably provided in the strip opening 601, a clamp 701 is provided at the upper end of the stud 702, the outer wall of the cylinder of the hydraulic rod 7 is fixed to the stud 702 through the clamp 701, and the lower end of the stud 702 extends out of the lifting plate 6 and is fixed by a nut 703. The stud 702 moves along the strip opening 601 to adjust the horizontal position of the hydraulic rod 7. The clamp 701 is formed by splicing two semicircular ring structures and connected by bolts.

[0065] A motor bracket 504 is fixedly arranged at the middle position of the outer side of the rotating plate 4 , and a second motor 503 is fixedly arranged on the motor bracket 504 . The motor shaft of the second motor 503 is connected to the two lead screws 5 respectively through a transmission belt 502 .

[0066] A wheel with a braking function may be provided below the motor bracket 504 according to actual conditions.

[0067] A plurality of reinforcing rods are arranged on one side of the baffle plate 33 away from the hydraulic rod 7 .

[0068] This embodiment provides a detection method based on a door hinge detection device, which is characterized by comprising:

[0069] S1, initial position, ensure that the lower part of the second inclined surface 1101 is in contact with the trigger rod 16, even if the limit column 13 extends out of the horizontal plate 203; install the door hinge 1 to be tested on the column 2 and the door 25;

[0070] S2. According to the opening and closing angle of the vehicle door 25 to be detected, the lower rotating shaft 301 is rotated to make it consistent with the opening and closing angle to be detected, and the distance between the movable end of the hydraulic rod 7 and the force point of the vehicle door 25 is determined;

[0071] S3, the rotating rod 9 is rotated in the direction of the hydraulic rod 7, and the lower end surface of the arc-shaped pressure rod 11 contacts the trigger rod 16 and presses the trigger rod 16. At this time, the spring 17 is compressed, the mounting block 18 moves downward and pulls the limit column 13 from the bottom of the limit column 13 through the wire rope 22 to make it move downward. The limit column 13 is hidden in the blind hole 1201;

[0072] S4, continue to rotate the rotating rod 9, the door reset rod 10 contacts the door 25, and drives the door 25 to move toward the hydraulic rod 7 until the rotation angle of the door 25 and the lower rotating shaft 301 are consistent, and then the rotating rod 9 is reset;

[0073] S5, rotating the lead screw 5, adjusting the position of the lifting plate 6 according to the force point of the door 25, so that the movable end of the hydraulic rod 7 and the force point are on the same horizontal plane;

[0074] S6. On the lifting plate 6, adjust the position of the hydraulic rod 7 horizontally so that the movable end is aligned with the force point of the door 25;

[0075] S7, start the hydraulic rod 7 to hit the force point of the door 25 through the movable end, so as to drive the door 25 to rotate. During the rotation process, the door 25 contacts the inclined surface 1301 and presses the limit column 13. When the door 25 passes the limit column 13, the door 25 is blocked between the limit column 13 and the baffle structure.

[0076] S8, repeat the steps of S3-S7 repeatedly. Like this, can detect the quality and life span of hinge one of car door 25 according to the detection record.

[0077] Also includes:

[0078] S9, after the inspection of the door hinge 1 is completed, the door hinge 1 is removed; and the door hinge 2 from the same batch is installed on the pillar 2 and the door 25;

[0079] S10, changing the stress point of the door 25, repeating steps S3-S7 with the same opening and closing angle of the door 25, the same distance between the movable end of the hydraulic rod 7 and the stress point, and the same number of tests.

[0080] The force points are generally selected from the positions where people often touch their hands when closing the car door 25 in daily life. The actual force points of the car door 25 when closing the door are generally located on the outer edge of the car door 25 above the door handle, which is far from the hinge and easily causes the car door 25 to shake. The device detects different force points of the car door 25, and can detect the influence of different force points of closing the door on the quality and life of the hinge.

[0081] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A door hinge detection device, characterized in that: It comprises a bottom plate fixed on the ground, a column is fixedly arranged above one end of the bottom plate, the door is connected to the column through a hinge, two hinge bases are fixed on the column, and two hinge heads are fixed on the door; A lower sleeve concentric with the hinge shaft is fixedly arranged at the lower part of the outer wall of the column, a lower rotating shaft is rotatably arranged in the lower sleeve, a rotating plate is fixedly arranged at the upper end of the lower rotating shaft, screws are rotatably arranged at both ends of the rotating plate, a lifting plate is arranged on the two screws through threaded connection, and a hydraulic rod is slidably arranged on the lifting plate; A horizontal plate is fixedly arranged on the column and below the vehicle door, a limiting structure is arranged on one side of the horizontal plate close to the hydraulic rod, and a baffle structure is fixedly arranged on the other side; the limiting structure comprises a boss fixedly arranged below the horizontal plate, a blind hole extending to the boss is opened on the horizontal plate, a limiting column is slidably arranged in the blind hole, the bottom wall of the limiting column is connected to the bottom wall of the blind hole through a spring 1, the upper end of the limiting column extends out of the horizontal plate and a slope 1 is arranged on the extended end, the slope 1 is located on a side close to the hydraulic rod and the upper end of the slope 1 is close to the baffle structure; The door reset structure also includes a door reset structure, which includes an upper sleeve fixedly arranged on the upper part of the outer wall of the column, the upper sleeve is concentric with the hinge shaft and is internally rotatably provided with an upper rotating shaft concentric therewith, the upper end of the upper rotating shaft is fixedly provided with a rotating rod, and a door reset rod is fixedly provided below the outer end of the rotating rod, a pulley 1 is fixedly provided on the horizontal plate and close to the boss, a lower external connecting plate is fixedly provided on the side of the horizontal plate away from the hydraulic rod, a pulley 2 is fixedly provided on the outer side of the lower external connecting plate, an upper external connecting plate away from the hydraulic rod is fixedly provided on the upper end of the column, and downward vertical plates are provided on both sides of the upper external connecting plate, the two vertical plates are connected below by a mounting plate, and a pulley 3 is fixedly provided on the mounting plate. A trigger rod is slidably provided on the upper external plate and located on the inner side of the pulley three, and a mounting block is fixedly provided at the lower end of the trigger rod, the mounting block and the upper external plate are connected by a spring two, the spring two is sleeved on the trigger rod, a steel wire rope is provided at the outer end of the mounting block, the other end of the steel wire rope is sequentially passed over the top of the pulley three, the outer side of the pulley two, the bottom of the pulley one, extends from the bottom of the boss into the blind hole and is fixedly connected to the limiting column; an arc-shaped pressure rod is fixedly provided on the rotating rod, the arc-shaped pressure rod is concentrically arranged with the upper rotating shaft, the arc-shaped pressure rod is located directly above the trigger rod, the lower end surface of the arc-shaped pressure rod is lower than the lower end surface of the rotating rod, and the two lower end surfaces are transitioned by an inclined plane two; When the lower part of the second inclined surface contacts the upper end surface of the trigger rod, the upper end of the limit column extends out of the horizontal plate, and when the lower end surface of the arc-shaped pressure rod contacts the upper end surface of the trigger rod, the limit column is hidden in the blind hole; When the vehicle door is parallel to the horizontal plate, the upper rotating shaft rotates, driving the rotating rod, the arc pressure rod and the vehicle door reset rod to rotate. The lower end surface of the arc pressure rod first contacts the trigger rod, the mounting block moves downward, and the limit column is pulled downward from the bottom of the limit column by the steel wire rope. The upper end of the limit column is hidden in the blind hole, and the vehicle door is disengaged from the limit of the limit column. The vehicle door reset rod contacts the inner side of the vehicle door while continuing to rotate and drives the vehicle door to move in the direction of the hydraulic rod.

2. The door hinge detection device according to claim 1, characterized in that: It also includes a motor 1 for driving the upper rotating shaft to rotate. The motor 1 is fixed on the column, and a gear 1 is arranged on the motor shaft. The lower end of the upper rotating shaft extends out of the upper sleeve and a gear 2 meshing with the gear 1 is arranged on the extended end.

3. The door hinge detection device according to claim 1, characterized in that: The baffle structure comprises a baffle perpendicular to the horizontal plate, and a buffer pad is arranged on a side of the baffle facing the hydraulic rod.

4. The door hinge detection device according to claim 1, characterized in that: The upper end surface of the trigger rod is a spherical surface.

5. The door hinge detection device according to claim 1, characterized in that: A pulley four corresponding to the pulley three is arranged below the upper external connection plate, and the steel wire rope is located between the two pulleys.

6. The vehicle door hinge detection device according to claim 1, characterized in that: The lifting plate is provided with a strip opening, the outer end of the strip opening protrudes beyond the vehicle door, a stud is slidably arranged in the strip opening, a clamp is arranged at the upper end of the stud, the outer wall of the cylinder body of the hydraulic rod is fixed to the stud through the clamp, and the lower end of the stud protrudes out of the lifting plate and is fixed by a nut.

7. A detection method for a door hinge detection device according to any one of claims 1 to 6, characterized in that: include: S1, initial position, ensuring that the lower part of the second inclined surface is in contact with the trigger rod, even if the limit column extends out of the horizontal plate; Install the door hinge to be tested on the pillar and the door; S2. According to the opening and closing angle of the vehicle door to be detected, the lower rotating shaft is rotated to make it consistent with the opening and closing angle to be detected, and the distance between the movable end of the hydraulic rod and the force point of the vehicle door is determined; S3, the rotating rod is rotated in the direction of the hydraulic rod, the lower end surface of the arc-shaped pressure rod contacts the trigger rod and presses the trigger rod, at this time the second spring is compressed, the mounting block moves downward and the limit column is pulled from below the limit column by the wire rope to move downward, and the limit column is hidden in the blind hole; S4, continue to rotate the rotating rod, the door reset rod contacts the door, and drives the door to move toward the hydraulic rod until the rotation angle of the door and the lower rotating shaft are consistent, and then the rotating rod is reset; S5, rotating the lead screw, adjusting the position of the lifting plate according to the force point of the door, so that the movable end of the hydraulic rod and the force point are on the same horizontal plane; S6. Horizontally adjust the position of the hydraulic rod on the lifting plate so that the movable end is aligned with the force point of the door; S7, starting the hydraulic rod to hit the force point of the door through the movable end, driving the door to rotate, and the door contacts the inclined surface and presses the limit column during the rotation process. When the door passes the limit column, the door is blocked between the limit column and the baffle structure; S8. Repeat steps S3-S7 repeatedly.

8. The detection method according to claim 7, characterized in that: Also includes: S9. After the inspection of the door hinge 1 is completed, the door hinge 1 is removed; and the door hinge 2 from the same batch is installed on the pillar and the door; S10, changing the force point of the door, repeating steps S3-S7 with the same door opening and closing angle, the same distance between the movable end of the hydraulic rod and the force point, and the same number of tests.

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