An automobile body wear resistance test device

Abstract

The present invention discloses a wear resistance test device for an automobile body. By hinging a support platform at the end of a robotic arm, a turntable rotates on the support platform through a second driving motor and an annular gear arranged on the turntable, so as to drive a reciprocating motion mechanism arranged thereon to rotate, enabling the reciprocating motion mechanism to conduct wear resistance tests on the automobile body in different directions; by driving a rotating ring arranged on a movable lifting lug through a third driving motor arranged on the support platform, the included angle between the movable lifting lug and a fixed lifting lug is adjusted, so that the elastic support balls on the movable lifting lug and the fixed lifting lug can limit and support the surfaces of irregular sizes at different positions of the vehicle body, and it is applicable to the wear resistance tests of different components on the outer surface of the vehicle body; meanwhile, by combining a first distance sensor and a second distance sensor, the acquisition and comparison of the wear resistance data of the vehicle body can be realized, effectively improving the detection efficiency and test accuracy of the wear resistance test of the automobile body.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle testing, and specifically to a wear resistance test device for an automobile body. Background Art

[0002] The outer covering parts of a vehicle are the "outer skin" of the automobile, and the paint on the outer covering parts is the "clothes" of the vehicle. The "clothes" of the vehicle need to experience various frictions during driving. The degrees of wear of the "clothes" of vehicles from different vehicle manufacturers are different, which mainly depends on the paint quality and its wear resistance. The wear resistance of an automobile body mainly refers to the tests on the outer covering parts and the opening and closing parts of the vehicle. Since a protective layer is formed after the vehicle is painted, the wear resistance of the automobile body mainly focuses on the wear resistance test of its protective layer to verify its wear resistance performance. Thus, the quality of the paint on the outer covering parts of the body can be judged through an accelerated friction test, and the test results can be fed back to the vehicle manufacturer to improve the wear resistance of the paint. There are few existing technologies for the wear resistance test of the vehicle body. A vehicle body surface wear detection device for vehicle inspection with the patent number CN202120496611.5 discloses that a telescopic mechanism drives a wear detection probe for detection and rotates along an annular slide rail at the same time, which can automatically detect the wear on the vehicle body surface; the disclosed technical solution mainly focuses on the detection of the wear on the vehicle body surface and cannot conduct a test on the wear resistance of the vehicle body. Summary of the Invention

[0003] The present invention provides a wear resistance test device for an automobile body, aiming to solve the problem that the wear resistance of the vehicle body cannot be tested.

[0004] To achieve the above object, the present invention provides a wear resistance test device for an automobile body, including a support platform, a turntable, a reciprocating motion mechanism and a robotic arm. The robotic arm is hinged to the support platform, the turntable is rotatably arranged on the support platform, and the reciprocating motion mechanism is arranged on the turntable; a plurality of elastic contact balls are arranged on the support platform along the circumferential direction; a telescopic component with an end hinged to the support platform is arranged on the robotic arm, so that the telescopic component adjusts the angle between the support platform and the vehicle body surface through telescopic motion; a friction component for detecting the wear resistance of the vehicle body is detachably arranged on the reciprocating motion mechanism; a first distance sensor for reading and recording the installation distance is arranged above the elastic contact balls on the support platform, and a second distance sensor for recording the distance between the vehicle body and the turntable before and after the test is arranged on the turntable.

[0005] Further, the reciprocating motion mechanism includes a first driving motor, a movable block, a rotating arm, and a rectangular frame. A rectangular through groove is provided on the turntable. The movable block is slidably arranged on one side of the rectangular through groove through a connecting rod. The rectangular frame is connected to the connecting rod. The first driving motor is fixedly arranged on the turntable. The output end of the first driving motor is connected to the rotating arm. A guide wheel is provided at the end of the rotating arm. The guide wheel is located inside the rectangular frame. A limiting through groove is provided on the turntable. The limiting through groove is located on both sides of the rectangular through groove. The movable block is slidably arranged on one side of the limiting through groove through a limiting roller. The friction member is a friction strip or a friction plate. The friction member is inserted into the movable block.

[0006] Further, a support column is provided on the support platform. The support columns are connected by a hinge rod. The telescopic member is an electric push rod. The output end of the electric push rod is hinged with a collar. The collar is fixed on the hinge rod. The end of the robotic arm is sleeved on the hinge rod. A support ring is provided on the support column. A second driving motor is fixed on the support ring. A ring gear is provided on the outer circle of the turntable. The output end of the second driving motor is meshed and driven with the ring gear through a gear, so that the turntable is rotatably arranged on the support platform.

[0007] Further, a lifting lug is protrudingly provided on the support platform. The elastic contact ball is slidably arranged on the lifting lug through a limiting rod. A spring is sleeved on the limiting rod. The lifting lug includes a fixed lifting lug and a movable lifting lug. The fixed lifting lug is correspondingly fixed on the support platform. The movable lifting lug is correspondingly movably arranged on the support platform. The movable lifting lug is connected with a rotating ring through an arc-shaped plate. A plurality of rotating teeth are provided on the rotating ring. A third driving motor is provided on the support ring. The output end of the third driving motor is meshed with the rotating teeth through a gear to drive the rotating ring to drive the movable lifting lug to perform a circular motion on the support platform. An arc-shaped through groove is provided on the support ring. The arc-shaped plate is located inside the arc-shaped through groove. A limiting sliding groove is provided on the outer wall of the support platform. A limiting protrusion is protrudingly provided on the movable lifting lug. The limiting protrusion is located inside the limiting sliding groove. A controller is further included. The first distance sensor is arranged on the fixed lifting lug and the movable lifting lug. The first distance sensor and the second distance sensor are electrically connected to the controller.

[0008] Compared with the prior art, it has the following beneficial effects:

[0009] The present invention discloses a wear resistance test device for an automobile body. By hinging a support platform at the end of a robotic arm, a turntable rotates on the support platform through a second driving motor and an annular gear provided on the turntable, so as to drive a reciprocating motion mechanism provided thereon to rotate, enabling the reciprocating motion mechanism to conduct wear resistance tests on the automobile body in different directions; by driving a rotating ring arranged on a movable lifting lug through a third driving motor provided on the support platform, the angle between the movable lifting lug and a fixed lifting lug is adjusted, so that the elastic support balls on the movable lifting lug and the fixed lifting lug can limit and support irregularly sized surfaces at different positions of the vehicle body, and it is applicable to wear resistance tests of different components on the outer surface of the vehicle body. At the same time, by arranging a first distance sensor on the fixed lifting lug and the movable lifting lug, and a second distance sensor on the bottom surface of the turntable, when the elastic contact ball contacts the vehicle body surface and compresses the spring to adjust the position of the support platform relative to the vehicle body surface, the first distance sensor records the distance between each lifting lug and the vehicle body surface. At this time, the second distance sensor also records the distance between the turntable and the vehicle body surface. After the reciprocating motion mechanism drives the friction component to start a test in a certain direction, the second distance sensor can be driven by the rotation of the turntable to rotate by 90 degrees to measure the distance of the worn vehicle body surface, so as to obtain the distance between the turntable and the vehicle body surface after friction for comparison, thereby achieving the acquisition of test data and effectively improving the detection efficiency and test accuracy of the wear resistance test of the automobile body. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only the preferred embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0011] Figure 1 It is a schematic diagram of a wear resistance test device for an automobile body according to the present application;

[0012] Figure 2 It is a partial cross-sectional structure diagram of a wear resistance test device for an automobile body according to the present application;

[0013] Figure 3 It is a partial enlarged schematic view A of a wear resistance test device for an automobile body according to the present application;

[0014] Figure 4 It is a partial enlarged schematic view B of a wear resistance test device for an automobile body according to the present application;

[0015] Figure 5 It is an axonometric view of a wear resistance test device for an automobile body according to the present application;

[0016] Figure 6It is the axonometric view of a vehicle body wear resistance test device of the present application;

[0017] Figure 7 It is the axonometric view of a vehicle body wear resistance test device of the present application;

[0018] Figure 8 It is the side view of a vehicle body wear resistance test device of the present application.

[0019] Reference numerals: 1 - support platform; 2 - turntable; 3 - robotic arm; 4 - elastic contact ball; 5 - telescopic member; 6 - friction member; 7 - first distance sensor; 8 - second distance sensor; 9 - pillar; 10 - support ring; 11 - arc-shaped support sleeve; 21 - first driving motor; 22 - movable block; 23 - rotating arm; 24 - rectangular frame; 25 - rectangular through groove; 26 - connecting rod; 27 - guide wheel; 28 - limiting through groove; 29 - limiting roller; 31 - hinge rod; 32 - collar; 41 - second driving motor; 42 - annular gear; 51 - fixed lifting lug; 52 - movable lifting lug; 53 - limiting rod; 54 - spring; 55 - swivel ring; 56 - arc-shaped plate; 57 - rotating tooth; 58 - third driving motor; 59 - arc-shaped through groove; 61 - limiting chute; 62 - limiting projection. Detailed implementation manners

[0020] In order to more easily understand the structure of the present invention and the functional features and advantages that can be achieved, the preferred embodiments of the present invention will be described in detail below in conjunction with the drawings as follows:

[0021] Embodiment 1:

[0022] As Figures 1 to 8As shown in the figure, the present invention provides a wear resistance test device for an automobile body, including a support platform 1, a turntable 2, a reciprocating motion mechanism and a robotic arm 3. Among them, the robotic arm 3 is a rotatable and telescopic structure, similar to the robotic arm 3 structure of an excavator; the robotic arm 3 is hinged to the support platform 1 so that the support platform 1 can rotate around the end of the robotic arm 3. The turntable 2 is rotatably arranged on the support platform 1, and the reciprocating motion mechanism is arranged on the turntable 2 to drive the reciprocating motion mechanism to rotate on the support platform 1 through the rotation of the turntable 2; further, a circular hole is provided in the middle of the support platform 1, and the turntable 2 is rotatably connected to the inner wall of the circular hole through balls or bearings. A number of elastic contact balls 4 are arranged on the support platform 1 along the circumferential direction to elastically contact the automobile body through the elastic contact balls 4 to adapt to the irregular body surface to ensure that the detection device can be used on the irregular body surfaces of different concave and convex surfaces; an expansion and contraction member 5 with an end hinged to the support platform 1 is provided on the robotic arm 3 so that the expansion and contraction member 5 adjusts the angle between the support platform 1 and the body surface through expansion and contraction movement; a friction member 6 for detecting the wear resistance of the body is detachably arranged on the reciprocating motion mechanism to drive the friction member 6 to perform a linear reciprocating motion through the reciprocating motion mechanism and rely on the turntable 2 to realize the rotational motion of the friction member 6, and combine its linear reciprocating motion to simulate the wear resistance test of the automobile body in different directions. A first distance sensor 7 for reading and recording the installation distance is arranged above the elastic contact balls 4 on the support platform 1, and a second distance sensor 8 for recording the distance between the body and the turntable 2 before and after the test is arranged on the turntable 2 to compare the data before and after the test through the first distance sensor 7 and the second distance sensor 8, so as to obtain accurate wear resistance test data. Specifically, the reciprocating motion mechanism includes a first driving motor 21, a movable block 22, a rotating arm 23 and a rectangular frame 24. A rectangular through groove 25 is provided on the turntable 2. The movable block 22 is slidably arranged on one side of the rectangular through groove 25 through a connecting rod 26. The rectangular frame 24 is connected to the connecting rod 26. The first driving motor 21 is fixedly arranged on the turntable 2. The output end of the first driving motor 21 is connected to the rotating arm 23. A guide wheel 27 is arranged at the end of the rotating arm 23. The guide wheel 27 is located inside the rectangular frame 24 to drive the rectangular frame 24 to perform a linear reciprocating motion by driving the rotating arm 23 to rotate through the first driving motor 21, so that the connecting rod 26 pushes the movable block 22 to perform a linear reciprocating motion. A limiting through groove 28 is provided on the turntable 2. The limiting through groove 28 is located on both sides of the rectangular through groove 25. The movable block 22 is slidably arranged on one side of the limiting through groove 28 through a limiting roller 29 to limit the movable block 22 on the turntable 2 through the limiting through groove 28 and the limiting roller 29 so that it can stably perform a linear reciprocating motion on the turntable 2. The friction member 6 is a friction strip or a friction plate, and the friction member 6 is inserted into the movable block 22; the friction member 6 can be a flexible friction plate or a hard friction plate, and different strength friction plates can be switched through the detachable insertion method to perform wear resistance tests on different positions of the body.

[0023] Embodiment 2:

[0024] As Figure 2 and Figure 3 shown, in combination with the technical solution of Embodiment 1, in this embodiment, a support column 9 is provided on the support platform 1, and the support columns 9 are connected by a hinge rod 31. Internal threads are provided at both ends of the hinge rod 31, through holes are provided on the support columns 9, both ends of the hinge rod 31 are located in the through holes, and the hinge rod 31 is fixed to the support column 9 by relying on bolts to connect with the internal threads; the telescopic member 5 is an electric push rod, and a collar 32 is hinged at the output end of the electric push rod. The collar 32 is fixedly connected to the hinge rod 31 through a connecting bolt, so that the electric push rod adjusts the angle between the support platform 1 and the vehicle body surface through telescopic movement, that is, the support platform 1 is pushed by the electric push rod to rotate at the end of the robotic arm 3. The end of the robotic arm 3 is sleeved on the hinge rod 31, so that the robotic arm 3 is hinged to the support column 9. A support ring 10 is provided on the support column 9, a second drive motor 41 is fixed on the support ring 10, a ring gear 42 is provided on the outer ring of the turntable 2, and the output end of the second drive motor 41 is meshed and driven with the ring gear 42 through a gear, so that the turntable 2 is rotatably arranged on the support platform 1.

[0025] Embodiment 3:

[0026] As Figures 1 to 7As shown, in combination with the technical solution of Embodiment 2, in this embodiment, a lifting lug is protrudingly provided on the support platform 1, and the elastic contact ball 4 is slidably arranged on the lifting lug through the limiting rod 53; a spring 54 is sleeved on the limiting rod 53, one end of the spring 54 is connected to the lifting lug, and the other end of the spring 54 is connected to the arc-shaped support sleeve 11 at the end of the limiting rod 53. The lifting lug includes a fixed lifting lug 51 and a movable lifting lug 52. The fixed lifting lug 51 is correspondingly fixed on the support platform 1, and the movable lifting lug 52 is correspondingly movably arranged on the support platform 1. The movable lifting lug 52 is connected with a swivel ring 55 through an arc-shaped plate 56. A plurality of rotating teeth 57 are provided on the swivel ring 55. A third driving motor 58 is provided on the support ring 10. The output end of the third driving motor 58 is meshed with the rotating teeth 57 through a gear to drive the swivel ring 55 to drive the movable lifting lug 52 to move in a circle on the support platform 1, thereby adjusting the included angle between the fixed lifting lug 51 and the movable lifting lug 52. An arc-shaped through groove 59 is provided on the support ring 10, and the arc-shaped plate 56 is located in the arc-shaped through groove 59 to limit the movable lifting lug 52 through the arc-shaped through groove 59 and the arc-shaped plate 56; a limiting chute 61 is provided on the outer wall of the support platform 1, and a limiting protrusion 62 is protrudingly provided on the movable lifting lug 52. The limiting protrusion 62 is located in the limiting chute 61, so that the movable lifting lug 52 can stably rotate on the support platform 1 to adjust its included angle with the fixed lifting lug 51, so as to adjust the contact range of the elastic contact ball 4, and the contact area between the four elastic contact balls 4 and the vehicle body can be adjusted. It further includes a controller. The first distance sensors 7 are provided on the fixed lifting lug 51 and the movable lifting lug 52, and the first distance sensors 7 are electrically connected to the second distance sensors 8 on the controller. Further, the electric push rod and the robotic arm 3 are respectively electrically connected to the controller to control the movement of the robotic arm 3 and the operation of the electric push rod through the controller; similarly, the first driving motor 21, the second driving motor 41, and the third driving motor 58 are also electrically connected to the controller to control the individual operations of the three driving motors through the controller; it should be noted that the first driving motor 21, the second driving motor 41, and the third driving motor 58 are driving motors with a self-locking function.

[0027] Working principle: By hinging the support platform 1 at the end of the robotic arm 3, the turntable 2 rotates on the support platform 1 through the second drive motor 41 and the ring gear 42 provided on the turntable 2, so as to drive the reciprocating motion mechanism provided thereon to rotate, enabling the reciprocating motion mechanism to conduct wear resistance tests on the automobile body in different directions; by driving the third drive motor 58 provided on the support platform 1 and connecting the swivel ring 55 to the movable lug 52, the angle between the movable lug 52 and the fixed lug 51 is adjusted, so that the elastic support balls on the movable lug 52 and the fixed lug 51 can limit and support the irregularly sized surfaces at different positions of the vehicle body, and it is applicable to the wear resistance tests of different parts on the outer surface of the vehicle body; at the same time, by providing the first distance sensors 7 on the fixed lug 51 and the movable lug 52, and providing the second distance sensor 8 on the bottom surface of the turntable 2, when the first distance sensor 7 records the distance between each lug and the vehicle body surface when the elastic contact ball 4 contacts the vehicle body surface and compresses the spring 54 to adjust the position of the support platform 1 relative to the vehicle body surface, at this time, the second distance sensor 8 also records the distance between the turntable 2 and the vehicle body surface. After the reciprocating motion mechanism drives the friction member 6 to start a test in a certain direction, the second distance sensor 8 can be rotated 90 degrees by the rotation of the turntable 2 to measure the distance of the worn vehicle body surface, so as to obtain the distance between the turntable 2 and the vehicle body surface after friction for comparison, so as to achieve the acquisition of test data, effectively improving the detection efficiency and test accuracy of the wear resistance test of the automobile body; in addition, the rotation of the turntable 2 can adjust the test direction of the reciprocating motion mechanism, and can also combine with the reciprocating motion mechanism to conduct wear resistance tests in multiple directions. The second distance sensor 8 can detect the wear resistance of the vehicle body by comparing the data before and after the test.

[0028] The above is only the preferred embodiment of the present invention, and does not impose any form of limitation on the present invention. Any person skilled in the art can make many possible changes and modifications to the technical solution of the present invention by using the above technical content within the scope of the technical solution of the present invention, or modify it into an equivalent embodiment with equivalent changes. Therefore, all changes, modifications, equivalent changes and modifications made to the above embodiments based on the technical solution of the present invention without departing from the content of the technical solution of the present invention shall fall within the protection scope of this technical solution.

Claims

1. An automobile body wear resistance test device, characterized in that, It includes a support platform, a turntable, a reciprocating motion mechanism and a robotic arm. The robotic arm is hinged to the support platform. The turntable is rotatably arranged on the support platform. The reciprocating motion mechanism is arranged on the turntable. A number of elastic contact balls are arranged circumferentially on the support platform. An expansion and contraction component with an end hinged to the support platform is arranged on the robotic arm, so that the expansion and contraction component adjusts the angle between the support platform and the vehicle body surface through expansion and contraction motion. A friction component for detecting the wear resistance of the vehicle body is detachably arranged on the reciprocating motion mechanism. A first distance sensor for reading and recording the installation distance is arranged above the elastic contact balls on the support platform. A second distance sensor for recording the distance between the vehicle body and the turntable before and after the test is arranged on the turntable. The reciprocating motion mechanism includes a first driving motor, a movable block, a rotating arm and a rectangular frame. A rectangular through groove is arranged on the turntable. The movable block is slidably arranged on one side of the rectangular through groove through a connecting rod. The rectangular frame is connected to the connecting rod. The first driving motor is fixedly arranged on the turntable. The output end of the first driving motor is connected to the rotating arm. A guide wheel is arranged at the end of the rotating arm. The guide wheel is located inside the rectangular frame. A support column is arranged on the support platform. A support ring is arranged on the support column. A second driving motor is fixed on the support ring. An annular gear is arranged on the outer ring of the turntable. The output end of the second driving motor is meshed and driven with the annular gear through a gear, so that the turntable is rotatably arranged on the support platform. A lifting lug protrudes from the support platform. The elastic contact ball is slidably arranged on the lifting lug through a limiting rod. A spring is sleeved on the limiting rod. The lifting lug includes a fixed lifting lug and a movable lifting lug. The fixed lifting lug is correspondingly fixed on the support platform. The movable lifting lug is correspondingly movably arranged on the support platform. The movable lifting lug is connected with a rotating ring through an arc-shaped plate. A number of rotating teeth are arranged on the rotating ring. A third driving motor is arranged on the support ring. The output end of the third driving motor is meshed with the rotating teeth through a gear to drive the rotating ring to drive the movable lifting lug to move circumferentially on the support platform.

2. The automobile body abrasion resistance test device according to claim 1, characterized in that, A limiting through groove is arranged on the turntable. The limiting through groove is located on both sides of the rectangular through groove. The movable block is slidably arranged on one side of the limiting through groove through a limiting roller.

3. The automobile body abrasion resistance test device according to claim 2, characterized in that, The support columns are connected by a hinge rod. The expansion and contraction component is an electric push rod. The output end of the electric push rod is hinged with a collar. The collar is fixed on the hinge rod. The end of the robotic arm is sleeved on the hinge rod.

4. The automobile body abrasion resistance test device according to claim 3, wherein An arc-shaped through groove is arranged on the support ring. The arc-shaped plate is located inside the arc-shaped through groove. A limiting sliding groove is arranged on the outer wall of the support platform. A limiting protrusion protrudes from the movable lifting lug. The limiting protrusion is located inside the limiting sliding groove.

5. The automotive body abrasion resistance test device according to claim 4, characterized in that, It also includes a controller. The first distance sensors are arranged on the fixed lifting lug and the movable lifting lug. The first distance sensors and the second distance sensor are electrically connected to the controller.

6. The automobile body abrasion resistance test device according to claim 1, characterized in that, The friction component is a friction strip or a friction plate. The friction component is inserted into the movable block.

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