A device for testing the compressive strength of a car door limiter housing

Abstract

This invention belongs to the field of automotive technology, specifically a device for testing the compressive strength of a car door limiter housing. The proposed solution includes a base with a support frame mounted on top. A limit bracket is fixedly mounted at one end of the top of the support frame, and a movable seat is slidably mounted in the middle of the limit bracket. A stepper motor for adjusting the movable seat's movement is mounted at the end of the limit bracket. A testing frame is mounted on the top of the movable seat, and a pressure-bearing mechanism is mounted on the top of the testing frame. This invention allows for rapid adjustment of the pressure applied to the door limiter's limiting box. When the driving mechanism drives the pressure adjustment mechanism in a free-fall motion from top to bottom, it applies pulsed impact pressure to the surface of the limiting box, causing deformation of the limiting box. The pressure change detected by the load seat is recorded, and the compressive strength test data of the limiting box is obtained. The test results are accurate and reliable.

Description

Technical Field

[0001] This invention relates to the field of automotive technology, and in particular to a device for testing the compressive strength of a door limiter housing. Background Technology

[0002] The function of a door opening limiter is to restrict the extent to which a car door can be opened. On one hand, it limits the maximum opening angle of the door, preventing it from opening too wide. On the other hand, it can keep the door open when needed, such as when the car is parked on a slope or in a moderate wind, preventing the door from closing automatically. Common door opening limiters are standalone pull-type limiters, while some are integrated with the door hinge, typically providing a limiting function when the door is fully open or partially open.

[0003] The lever-type door limiter consists of a limiter bracket, a limiter box, and an elastic rubber block. The bracket is bolted to the vehicle body, and the limiter box is screwed onto the door. When the door opens, the limiter box slides along the limiter arm. The rubber block undergoes different elastic deformations due to changes in the height of the limiter arm, requiring different forces to close the door. When the door opens to its maximum distance, pressure is applied to the outer side of the limiter box. Currently, the ultimate compressive strength of the limiter box is mainly tested through destructive testing by continuously applying tensile force, or by using a force detector to detect the applied force and the compressive force that the limiter housing can withstand. The pressure on the limiter box increases continuously, while the pressure on the limiter housing during use is mostly impact force. Therefore, traditional pressure testing equipment cannot accurately obtain the compressive durability data of the limiter box.

[0004] In view of this, the present invention provides a door limiter housing pressure resistance testing device to solve the technical problems existing in the prior art. Summary of the Invention

[0005] Based on the technical problems existing in the background art, the present invention proposes a device for testing the compressive strength of a door limiter housing.

[0006] This invention proposes a device for testing the compressive strength of a car door limiter housing, comprising a base, a support frame mounted on the top of the base, a limit bracket fixedly mounted at one top end of the support frame, a movable seat slidably mounted in the middle of the limit bracket, a stepper motor for driving the movable seat to move and adjust at the end of the limit bracket, a testing frame mounted on the top of the movable seat, a pressure-bearing mechanism mounted on the top of the testing frame, a load seat mounted on the top of the pressure-bearing mechanism, and a car door limiter to be tested mounted in the middle of the load seat. A pressure-applying mechanism is rotatably mounted at the bottom of the pressure-bearing mechanism, and the bottom of the car door limiter is fixedly connected to the middle of the pressure-applying mechanism. A vertically distributed guide rail is fixedly mounted at the other top end of the support frame, and a pressure adjusting mechanism is slidably mounted inside the guide rail. A vertically distributed drive mechanism is also fixedly mounted at the other top end of the support frame, the drive mechanism being used to drive the pressure adjusting mechanism to reciprocate up and down along the guide rail, and the front end of the pressure applying mechanism is slidably connected to the pressure adjusting mechanism.

[0007] Preferably, in this invention, the pressure regulating mechanism includes a pressure regulating frame and a counterweight disposed at the bottom of the pressure regulating frame. The top of the pressure regulating frame is provided with a guide groove that slides with the pressure applying mechanism. A connecting bolt is screwed to the top of the pressure regulating frame, and a threaded through hole that is screwed to the connecting bolt is provided on the top of the counterweight. Both ends of the pressure regulating frame and the counterweight are provided with sliders that slide with the guide rail. The pressure regulating mechanism also includes a lifting cylinder fixedly installed on the base, and the counterweight is stacked above the lifting cylinder.

[0008] Preferably, in this invention, the pressure regulating frame is provided with a mounting groove in the middle, and a movable pin is slidably installed inside the mounting groove. A spring is sleeved on the outside of the movable pin, and an arc-shaped groove adapted to the bottom of the connecting bolt is provided at the inner end of the movable pin.

[0009] Preferably, in this invention, the driving mechanism includes a mounting frame arranged parallel to the guide rail, a plurality of motor-driven sprockets are rotatably mounted in the middle of the mounting frame, and a driving chain plate is sleeved on the outer side of the sprockets. Two driving blocks that cooperate with the pressure adjustment mechanism are mounted on the outer side of the driving chain plate.

[0010] Preferably, in this invention, guide grooves are provided on both sides of the guide rail, and a limiting plate that cooperates with the bottom of the pressure regulating mechanism is installed inside the two guide grooves. The limiting plate is composed of a horizontally moving plate and a motor that drives the plate to move back and forth, and a shock-absorbing plate is provided on the top of the plate.

[0011] Preferably, in this invention, the limiting bracket includes a rectangular frame, and the middle part of the frame is provided with a sliding groove that slides and engages with the bottom of the movable seat. A threaded screw that is screwed and engaged with the movable seat is rotatably mounted in the middle part of the sliding groove, and the output shaft of the stepper motor is connected to the threaded screw for transmission.

[0012] Preferably, in this invention, the movable seat includes an adjusting base, and multiple rectangular slots are provided on both sides of the top of the adjusting base. A positioning pin is slidably installed inside the rectangular slot. Two columnar gears are rotatably installed on the top of the adjusting base, and a rack portion that meshes with the columnar gears is provided at the bottom of the positioning pin. A motor that drives the columnar gears to rotate is installed at the end of the adjusting base. Positioning slots that are adapted to the ends of the positioning pins are provided on both sides of the inner wall of the frame.

[0013] Preferably, in this invention, the pressure-bearing mechanism includes a pressure-bearing rod installed on the upper part of the testing frame, and a sliding part is provided in the middle of the pressure-bearing rod. A hinge seat that rotates with the inner end of the pressure-applying mechanism is slidably installed on the outer side of the sliding part, and a telescopic bolt is screwed into the middle of the hinge seat. A locking member is rotatably installed at the bottom of the telescopic bolt, and locking rods are provided at both ends of the bottom of the locking member. Locking grooves that are adapted to the locking rods are provided on both sides of the sliding part.

[0014] Preferably, in this invention, the bottom of the load seat is provided with a pull rod through groove for the pressure-bearing rod, and pressure sensors are provided on both sides of the top of the load seat, and the top of each pressure sensor is provided with a fixing part adapted to the door limiter.

[0015] Preferably, in this invention, the pressure applying mechanism includes a pressure applying rod, the inner end of which is rotatably connected to a hinge seat, the outer end of which is provided with a force-bearing rod that slides with a pressure adjusting mechanism, the middle part of which is provided with a pressure adjusting part, and the outer side of which is slidably mounted with a pressure seat connected to the bottom of a door limiter, both sides of which are screwed with positioning bolts, and both sides of the pressure adjusting part are provided with multiple positioning threaded holes that cooperate with the positioning bolts.

[0016] Compared with the prior art, the present invention provides a device for detecting the compressive strength of a door limiter housing, which has the following advantages:

[0017] In this invention, a load seat is provided for fixing the door limiter's limiting box, and a pressure applying mechanism is provided for fixing the door limiter's pull rod. The load seat is mounted on the pressure bearing mechanism, and one end of the pressure applying mechanism is rotatably mounted on the bottom of the pressure bearing mechanism. The other end of the pressure applying mechanism is connected to a pressure regulating mechanism. When the pressure regulating mechanism drives one end of the pressure applying mechanism to descend, the pressure applying mechanism rotates downward around its other end, thereby simulating the opening and closing of the car door and driving the pull rod of the door limiter downward. The middle part of the pressure applying mechanism is connected to the pull rod of the door limiter. The bottom is fixed to form a lever structure. During the test, by changing the weight of the pressure adjustment mechanism and the distance between the bottom of the door limiter and the pressure application mechanism, the pressure applied to the door limiter box can be quickly changed. When the drive mechanism drives the pressure adjustment mechanism to reciprocate from top to bottom in a free fall motion, it drives the door limiter lever to apply pulse-like impact pressure to the surface of its limiter box until the door limiter box deforms. The pressure change detected by the load seat is recorded to obtain the pressure resistance test data of the limiter box. The test results are accurate and reliable. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a door limiter housing compression resistance testing device proposed in this invention;

[0019] Figure 2 This is a schematic diagram of the drive mechanism structure of a door limiter housing compression resistance testing device proposed in this invention;

[0020] Figure 3 This is a schematic diagram of the pressure adjustment mechanism of a door limiter housing pressure resistance testing device proposed in this invention;

[0021] Figure 4 This is a schematic diagram of the limiting platform structure of a door limiter housing compression resistance testing device proposed in this invention;

[0022] Figure 5 This is a schematic diagram of the lifting cylinder distribution structure of a door limiter housing pressure resistance testing device proposed in this invention;

[0023] Figure 6 This is a schematic diagram of the movable seat structure of a door limiter housing compression resistance testing device proposed in this invention;

[0024] Figure 7 This is a schematic diagram of the movable seat distribution structure of a door limiter housing compression resistance testing device proposed in this invention;

[0025] Figure 8 This is a schematic diagram of the pressure-bearing mechanism of a door limiter housing pressure resistance testing device proposed in this invention;

[0026] Figure 9This is a schematic diagram of the pressure application mechanism of a door limiter housing pressure resistance testing device proposed in this invention;

[0027] Figure 10 This is a schematic diagram of the pressure application mechanism distribution structure of a door limiter housing pressure resistance testing device proposed in this invention.

[0028] In the diagram: 1. Base, 2. Support frame, 3. Limiting plate, 31. Plate body, 32. Motor, 33. Shock absorber, 4. Drive mechanism, 41. Mounting bracket, 42. Drive block, 43. Drive chain plate, 5. Guide rail, 6. Pressure adjustment mechanism, 61. Pressure adjustment bracket, 62. Guide groove, 63. Connecting bolt, 64. Arc groove, 65. Movable pin, 66. Mounting groove, 67. Counterweight, 68. Sliding block, 69. Lifting cylinder, 7. Door limiter, 8. Load seat, 9. Pressure application mechanism, 91. Pressure rod, 92. Force rod, 9... 3. Pressure adjustment section, 94. Pressure seat, 95. Positioning threaded hole, 10. Pressure bearing mechanism, 101. Pressure bearing rod, 102. Sliding part, 103. Hinge seat, 104. Locking groove, 105. Locking rod, 106. Locking part, 11. Detection frame, 12. Movable seat, 121. Adjustment base, 122. Rectangular groove, 123. Positioning pin, 124. Column gear, 125. Motor, 13. Limit bracket, 131. Frame, 132. Positioning groove, 133. Sliding groove, 134. Threaded screw, 14. Stepper motor. Detailed Implementation

[0029] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0030] Reference Figures 1-10A device for testing the compressive strength of a car door limiter housing includes a base 1, a support frame 2 mounted on the top of the base 1, a limit bracket 13 fixedly mounted on one top end of the support frame 2, a movable seat 12 slidably mounted on the middle of the limit bracket 13, a stepper motor 14 for adjusting the displacement of the movable seat 12 mounted on the end of the limit bracket 13, a testing frame 11 mounted on the top of the movable seat 12, a pressure-bearing mechanism 10 mounted on the top of the testing frame 11, a load seat 8 mounted on the top of the pressure-bearing mechanism 10, and the part to be tested mounted in the middle of the load seat 8. The bottom of the door limiter 7 and the pressure bearing mechanism 10 is rotatably mounted with a pressure applying mechanism 9, and the bottom of the door limiter 7 is fixedly connected to the middle of the pressure applying mechanism 9. The other end of the top of the support frame 2 is fixedly mounted with a vertically distributed guide rail 5, and a pressure adjusting mechanism 6 is slidably installed inside the guide rail 5. The other end of the top of the support frame 2 is also fixedly mounted with a vertically distributed drive mechanism 4, which is used to drive the pressure adjusting mechanism 6 to move up and down along the guide rail 5. The front end of the pressure applying mechanism 9 is slidably connected to the pressure adjusting mechanism 6.

[0031] In this invention, a load seat 8 is provided for fixing the door limiter 7's limiting box, and a pressure applying mechanism 9 is provided for fixing the door limiter 7's pull rod. The load seat 8 is mounted on a pressure bearing mechanism 10, and one end of the pressure applying mechanism 9 is rotatably mounted on the bottom of the pressure bearing mechanism 10. The other end of the pressure applying mechanism 9 is connected to a pressure regulating mechanism 6. When the pressure regulating mechanism 6 drives one end of the pressure applying mechanism 9 to descend, the pressure applying mechanism 9 rotates downward around its other end, thereby simulating the opening and closing of the car door and driving the pull rod of the door limiter 7 to move downward. The middle part of the pressure applying mechanism 9 is connected to the door limiter. The bottom end of the door limiter 7 is fixed to form a lever structure. During the test, by changing the weight of the pressure adjustment mechanism 6 and the distance between the bottom end of the door limiter 7 and the pressure application mechanism 9, the pressure applied to the door limiter 7 box can be quickly changed. When the drive mechanism 4 drives the pressure adjustment mechanism 6 to reciprocate from top to bottom in a free fall motion, it drives the door limiter 7 lever to apply pulse-like impact pressure to the surface of its limiter box until the door limiter 7 box deforms. The pressure change detected by the load seat 8 is recorded to obtain the pressure resistance test data of the limiter box. The test results are accurate and reliable.

[0032] As a further embodiment of the present invention, the pressure regulating mechanism 6 includes a pressure regulating frame 61 and a counterweight 67 disposed at the bottom of the pressure regulating frame 61. The top of the pressure regulating frame 61 is provided with a guide groove 62 that slides with the pressure applying mechanism 9. A connecting bolt 63 is screwed onto the top of the pressure regulating frame 61, and the top of the counterweight 67 is provided with a threaded through hole that screws with the connecting bolt 63. Both ends of the pressure regulating frame 61 and the counterweight 67 are provided with slider portions 68 that slide with the guide rail 5. The pressure regulating mechanism 6 also includes a lifting cylinder 69 fixedly mounted on the base 1, and the counterweight 67 is stacked above the lifting cylinder 69. In the Mingzhong method, the pressure regulating mechanism 6 falls freely above the guide rail 5, applying a downward pulling force to the front end of the pressure applying mechanism 9. This downward pulling force is then generated on the door limiter 7 by the pressure applying mechanism 9, which is converted into pressure on the door limiter 7's pull rod against its limit box. The pressure regulating mechanism 6 is then driven by the drive mechanism 4 to move upward and then fall again, realizing a reciprocating pressure test operation. When the weight needs to be changed, the lifting cylinder 69 lifts the counterweight 67 located at the bottom. At the same time, the connecting bolt 63 is screwed into the counterweight 67 below to adjust the downward pulling force. The pressure adjustment process is simple and convenient, and the detected pressure is stable.

[0033] As a further embodiment of the present invention, a mounting groove 66 is provided in the middle of the pressure regulating bracket 61, and a movable pin 65 is slidably installed inside the mounting groove 66. A spring is sleeved on the outside of the movable pin 65, and an arc-shaped groove 64 adapted to the bottom of the connecting bolt 63 is provided at the inner end of the movable pin 65. In the present invention, one end of the mounting groove 66 is connected to a threaded hole on the pressure regulating bracket 61, and the inner end of the movable pin 65 is inside the threaded hole. When the connecting bolt 63 moves downward, the bottom of the movable pin 65 presses against the arc-shaped groove 64 of the movable pin 65, causing the outer end of the movable pin 65 to move outward and extend. The driving mechanism 4 can then pull the pressure regulating mechanism 6 upward through the movable pin 65.

[0034] As a further embodiment of the present invention, the drive mechanism 4 includes a mounting frame 41 arranged parallel to the guide rail 5. Multiple motor-driven sprockets are rotatably mounted in the middle of the mounting frame 41, and a drive chain plate 43 is sleeved on the outer side of the sprockets. Two drive blocks 42 that cooperate with the pressure regulating mechanism 6 are mounted on the outer side of the drive chain plate 43. In the present invention, when the drive block 42 moves to the side of the pressure regulating mechanism 6 with the drive chain plate 43, the drive block 42 cooperates with the movable pin 65 on the pressure regulating mechanism 6, pushing the pressure regulating mechanism 6 to move upward along the guide rail 5. When the drive block 42 moves to the top and rotates, it disengages from the movable pin 65, and the pressure regulating mechanism 6 then falls freely, generating downward pressure on the end of the pressure applying mechanism 9. Through the alternating movement of the two drive blocks 42, the pressure regulating mechanism 6 reciprocates up and down.

[0035] As a further embodiment of the present invention, guide grooves are provided on both sides of the guide rail 5, and a limiting plate 3 that cooperates with the bottom of the pressure regulating mechanism 6 is installed inside the two guide grooves. The limiting plate 3 consists of a horizontally moving plate 31 and a motor 32 that drives the plate 31 to move back and forth. A shock-absorbing plate 33 is provided on the top of the plate 31. In the present invention, after the weight of the pressure regulating mechanism 6 is adjusted, the motor 32 drives the plate 31 to move inward, thereby closing the bottom space of the guide rail 5.

[0036] As a further embodiment of the present invention, the limiting bracket 13 includes a rectangular frame 131, and the middle of the frame 131 is provided with a sliding groove 133 that slides and engages with the bottom of the movable seat 12. A threaded screw 134 that is screwed and engaged with the movable seat 12 is rotatably mounted in the middle of the sliding groove 133. The output shaft of the stepper motor 14 is connected to the threaded screw 134 for transmission. In the present invention, the pressure regulating mechanism 6 is raised to the highest position by the drive mechanism 4. At this time, the pressure applying mechanism 9 is in a horizontal position. When the door limiter 7 is installed between the load seat 8 and the pressure applying mechanism 9, the front and rear distance of the movable seat 12 is adjusted by the cooperation of the stepper motor 14 and the threaded screw 134, thereby adjusting the connection position between the door limiter 7 and the pressure applying mechanism 9, controlling the lever torque ratio of the pressure applying mechanism 9, and adjusting the opening and closing scale of the pressure applying mechanism 9. In conjunction with the weight adjustment of the pressure regulating mechanism 6, the detection operation of door limiters 7 of various sizes can be quickly adapted.

[0037] As a further embodiment of the present invention, the movable base 12 includes an adjusting base 121, and multiple rectangular slots 122 are provided on both sides of the top of the adjusting base 121. Positioning pins 123 are slidably installed inside the rectangular slots 122. Two cylindrical gears 124 are rotatably mounted on the top of the adjusting base 121, and a rack portion is provided at the bottom of the positioning pins 123 to mesh with the cylindrical gears 124 for transmission. A motor 125 for driving the cylindrical gears 124 to rotate is installed at the end of the adjusting base 121. The frame 131 has multiple rectangular slots 122 on both sides of the frame 131. Each wall is provided with a positioning groove 132 that matches the end of the positioning pin 123. In this invention, after the spacing of the movable seat 12 is adjusted, the motor 125 drives the two column gears 124 to rotate, which in turn drives the positioning pins 123 on both sides to move outward synchronously. The end of the positioning pin 123 is inserted into the positioning groove 132 to effectively fix the position of the movable seat 12, so as to avoid the movable seat 12 from moving forward and backward when the door limiter 7 is pressed, and improve the stability of the pressure resistance test of the door limiter 7.

[0038] As a further embodiment of the present invention, the pressure-bearing mechanism 10 includes a pressure-bearing rod 101 mounted on the upper part of the testing frame 11, and a sliding part 102 is provided in the middle of the pressure-bearing rod 101. A hinge seat 103 that rotatably engages with the inner end of the pressure-applying mechanism 9 is slidably mounted on the outer side of the sliding part 102. A telescopic bolt is screwed into the middle of the hinge seat 103. A locking member 106 is rotatably mounted on the bottom of the telescopic bolt. Locking rods 105 are provided at both ends of the bottom of the locking member 106. Locking grooves 104 that are adapted to the locking rods 105 are provided on both sides of the sliding part 102. In the present invention, when When the pressure applying mechanism 9 is in a horizontal position, during the adjustment of the position of the movable seat 12, the hinge seat 103 moves on the sliding part 102 to adjust the distance between the inner end of the pressure applying mechanism 9 and the bottom end of the door limiter 7 pull rod, thereby adjusting the lever torque ratio at both ends of the pressure applying mechanism 9. In conjunction with the weight adjustment of the pressure regulating mechanism 6, the pressure applied by the door limiter 7 limit box is adjusted. After the position adjustment is completed, the inner end position of the pressure applying mechanism 9 is fixed by the cooperation of the locking rod 105 and the locking groove 104, thereby increasing the adjustment range of the device's detection pressure and the convenience of the adjustment process.

[0039] As a further embodiment of the present invention, the bottom of the load seat 8 is provided with a pull rod through groove for the pressure-bearing rod 101, and pressure sensors are provided on both sides of the top of the load seat 8. The top of each pressure sensor is provided with a fixing part that is adapted to the door limiter 7. In the present invention, the limiting box of the door limiter 7 is installed between the two pressure sensors. When the pull rod of the door limiter 7 moves downward and impacts the limiting box, the pressure sensor records the pressure data and obtains the pressure resistance detection data of the limiting box of the door limiter 7.

[0040] As a further embodiment of the present invention, the pressure applying mechanism 9 includes a pressure applying rod 91, the inner end of which is rotatably connected to the hinge seat 103. The outer end of the pressure applying rod 91 is provided with a force-receiving rod 92 that slides with the pressure adjusting mechanism 6. A pressure adjusting part 93 is provided in the middle of the pressure applying rod 91, and a pressure applying seat 94 connected to the bottom of the door limiter 7 is slidably mounted on the outer side of the pressure adjusting part 93. Positioning bolts are screwed onto both sides of the pressure applying seat 94. Multiple positioning threaded holes 95 that cooperate with the positioning bolts are provided on both sides of the pressure adjusting part 93. In this invention, after the door limiter 7 is installed and fixed, the angle of the door limiter 7 pull rod in the limit box is changed by pushing the pressure seat 94 to move back and forth. This controls the angle at which the pull rod impacts the surface of the limit box when it moves downward, simulating the size change of the door opening and closing. At the same time, through the adjustment and coordination of the movable seat 12, the pressure bearing mechanism 10 and the pressure applying mechanism 9, and the weight adjustment of the pressure regulating mechanism 6, the device can quickly adapt to the pressure resistance test operation of door limiters 7 of different sizes and models, and obtain accurate pressure resistance test data for door limiters 7 of different sizes and models.

[0041] In use, the door limiter 7 is installed between the load seat 8 and the pressure applying mechanism 9. The load seat 8 is installed on the pressure bearing mechanism 10, and one end of the pressure applying mechanism 9 is rotatably installed at the bottom of the pressure bearing mechanism 10. The other end of the pressure applying mechanism 9 is connected to the pressure regulating mechanism 6. When the pressure regulating mechanism 6 drives one end of the pressure applying mechanism 9 to descend, the pressure applying mechanism 9 rotates downward around its other end. This simulates the opening and closing of the door, causing the pull rod of the door limiter 7 to move downward. The middle of the pressure applying mechanism 9 is connected to the bottom of the pull rod of the door limiter 7. The fixed end forms a lever structure. During the testing process, by changing the weight of the pressure adjustment mechanism 6 and the distance between the bottom end of the door limiter 7 and the pressure application mechanism 9, the pressure applied to the limit box of the door limiter 7 can be quickly changed. When the drive mechanism 4 drives the pressure adjustment mechanism 6 to reciprocate from top to bottom in a free fall motion, it drives the door limiter 7 pull rod to apply pulse-like impact pressure to the surface of its limit box until the limit box of the door limiter 7 deforms. The pressure change detected by the load seat 8 is recorded to obtain the pressure resistance test data of the limit box.

[0042] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A device for testing the compressive strength of a car door limiter housing, comprising a base (1), wherein a support frame (2) is mounted on the top of the base (1), characterized in that, A limiting bracket (13) is fixedly installed at one top end of the support frame (2), and a movable seat (12) is slidably installed in the middle of the limiting bracket (13). A stepper motor (14) for driving the displacement adjustment of the movable seat (12) is installed at the end of the limiting bracket (13). A detection frame (11) is installed on the top of the movable seat (12), and a pressure bearing mechanism (10) is installed on the top of the detection frame (11). A load seat (8) is installed on the top of the pressure bearing mechanism (10), and a door limiter (7) to be tested is installed in the middle of the load seat (8). The bottom of the pressure bearing mechanism (10) is... A pressure-applying mechanism (9) is rotatably installed, and the bottom of the door limiter (7) is fixedly connected to the middle of the pressure-applying mechanism (9). A vertically distributed guide rail (5) is fixedly installed at the other end of the top of the support frame (2), and a pressure adjustment mechanism (6) is slidably installed inside the guide rail (5). A vertically distributed drive mechanism (4) is also fixedly installed at the other end of the top of the support frame (2). The drive mechanism (4) is used to drive the pressure adjustment mechanism (6) to move up and down along the guide rail (5). The front end of the pressure-applying mechanism (9) is slidably connected to the pressure adjustment mechanism (6). The pressure-bearing mechanism (10) includes a pressure-bearing rod (101) installed on the upper part of the testing frame (11), and a sliding part (102) is provided in the middle of the pressure-bearing rod (101). A hinge seat (103) that rotates with the inner end of the pressure-applying mechanism (9) is slidably installed on the outer side of the sliding part (102), and a telescopic bolt is screwed into the middle of the hinge seat (103). A locking member (106) is rotatably installed at the bottom of the telescopic bolt, and locking rods (105) are provided at both ends of the bottom of the locking member (106). Locking grooves (104) that are adapted to the locking rods (105) are provided on both sides of the sliding part (102). The pressure applying mechanism (9) includes a pressure applying rod (91), and the inner end of the pressure applying rod (91) is rotatably connected to the hinge seat (103). The outer end of the pressure applying rod (91) is provided with a force-bearing rod (92) that slides with the pressure adjusting mechanism (6). The middle part of the pressure applying rod (91) is provided with a pressure adjusting part (93), and the outer side of the pressure adjusting part (93) is slidably installed with a pressure seat (94) that is connected to the bottom of the door limiter (7). Both sides of the pressure seat (94) are screwed with positioning bolts. Both sides of the pressure adjusting part (93) are provided with multiple positioning threaded holes (95) that cooperate with the positioning bolts.

2. The door limiter housing compression resistance testing device according to claim 1, characterized in that, The pressure regulating mechanism (6) includes a pressure regulating frame (61) and a counterweight (67) disposed at the bottom of the pressure regulating frame (61). The top of the pressure regulating frame (61) is provided with a guide groove (62) that slides with the pressure applying mechanism (9). A connecting bolt (63) is screwed to the top of the pressure regulating frame (61), and a threaded through hole that is screwed to the connecting bolt (63) is provided on the top of the counterweight (67). Both ends of the pressure regulating frame (61) and the counterweight (67) are provided with sliders (68) that slide with the guide rail (5). The pressure regulating mechanism (6) also includes a lifting cylinder (69) fixedly installed on the base (1), and the counterweight (67) is stacked above the lifting cylinder (69).

3. The door limiter housing compression resistance testing device according to claim 2, characterized in that, The pressure regulating bracket (61) has a mounting groove (66) in the middle, and a movable pin (65) is slidably installed inside the mounting groove (66). A spring is sleeved on the outside of the movable pin (65), and an arc groove (64) adapted to the bottom of the connecting bolt (63) is provided at the inner end of the movable pin (65).

4. The door limiter housing compression resistance testing device according to claim 3, characterized in that, The drive mechanism (4) includes a mounting frame (41) arranged parallel to the guide rail (5). Multiple motor-driven sprockets are rotatably mounted in the middle of the mounting frame (41), and a drive chain plate (43) is sleeved on the outer side of the sprockets. Two drive blocks (42) that cooperate with the pressure adjustment mechanism (6) are installed on the outer side of the drive chain plate (43).

5. The door limiter housing compression resistance testing device according to claim 1, characterized in that, Guide grooves are provided on both sides of the guide rail (5), and a limiting plate (3) that cooperates with the bottom of the pressure regulating mechanism (6) is installed inside the two guide grooves. The limiting plate (3) consists of a horizontally moving plate (31) and a motor (32) that drives the plate (31) to move back and forth. A shock-absorbing plate (33) is provided on the top of the plate (31).

6. The door limiter housing compression resistance testing device according to claim 1, characterized in that, The limiting bracket (13) includes a rectangular frame (131), and the middle part of the frame (131) is provided with a sliding groove (133) that slides and engages with the bottom of the movable seat (12). The middle part of the sliding groove (133) is rotatably mounted with a threaded screw (134) that is screwed and engaged with the movable seat (12). The output shaft of the stepper motor (14) is connected to the threaded screw (134) for transmission.

7. The door limiter housing compression resistance testing device according to claim 6, characterized in that, The movable seat (12) includes an adjusting base (121), and multiple rectangular slots (122) are provided on both sides of the top of the adjusting base (121). A positioning pin (123) is slidably installed inside the rectangular slot (122). Two columnar gears (124) are rotatably installed on the top of the adjusting base (121), and a rack part that meshes with the columnar gears (124) is provided at the bottom of the positioning pin (123). A motor (125) that drives the columnar gears (124) to rotate is installed at the end of the adjusting base (121). Positioning slots (132) that are adapted to the end of the positioning pins (123) are provided on both sides of the inner wall of the frame (131).

8. The door limiter housing compression resistance testing device according to claim 7, characterized in that, The bottom of the load seat (8) is provided with a pull rod through groove for the pressure-bearing rod (101), and pressure sensors are provided on both sides of the top of the load seat (8), and the top of the two pressure sensors is provided with a fixing part that is compatible with the door limiter (7).

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