A testing device for automobile dust covers

Abstract

This utility model relates to a testing device for automotive dust covers, comprising a workbench. Two first clamping mechanisms for clamping drive shafts and two second clamping mechanisms for clamping universal joints are symmetrically arranged in the center of the workbench surface, with the two second clamping mechanisms located on either side of the first clamping mechanisms. The workbench also includes a drive mechanism connected to support wheels of the two first clamping mechanisms and swing arms of the two second clamping mechanisms, facilitating simultaneous rotation of the support wheels to rotate the drive shaft and reciprocating movement of the swing arms to deflect the universal joints. This utility model simplifies the power transmission path and reduces energy consumption and mechanical complexity by linking the rotation of the support wheels and the swing arm's movement through a single drive shaft in the drive mechanism. The elongated hole design between the crank and the swing arm enables synchronous control of the reciprocating movement of the swing arm and the rotation of the drive shaft, improving the coordination and repeatability of the testing process.

Description

Technical Field

[0001] This utility model relates to the field of automotive dust cover testing technology, and in particular to an automotive dust cover testing device. Background Technology

[0002] As is well known, driveshaft dust covers are crucial components in the automotive industry. Located outside the wheel-side and differential-side universal joints, their primary function is to protect the universal joints from external contaminants such as mud and dust, thereby ensuring the smooth operation of the driveshaft. The quality of the dust cover directly affects the performance of the automotive driveshaft universal joints, which in turn impacts the vehicle's handling stability and safety.

[0003] In existing experimental devices, the power transmission paths for the rotation of the rotating shaft and the yaw of the universal joint are independent, resulting in a large number of power sources, complex structure, and high energy consumption.

[0004] To address this, we designed a testing device for automotive dust covers. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, this utility model discloses a test device for automobile dust covers.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A vehicle dust cover testing device includes a workbench, on which two first clamping mechanisms for clamping drive shafts and two second clamping mechanisms for clamping universal joints are symmetrically arranged in the center of the workbench surface, and the two second clamping mechanisms are respectively located on both sides of the first clamping mechanisms.

[0008] The first clamping mechanism has two support wheels for the rolling support drive shaft and a pressing wheel for the rolling pressing drive shaft;

[0009] The second clamping mechanism has a linear slide rail and a slider that slides with it. The slider is rotatably connected to a connector that can cooperate with a universal joint spline shaft. The outer wall is provided with a swing rod perpendicular to its sliding direction.

[0010] The worktable is also equipped with a drive mechanism that is connected to the support wheels of the two first clamping mechanisms and the swing rods of the two second clamping mechanisms, so as to simultaneously drive the support wheels to rotate, thereby driving the transmission shaft to rotate, and drive the swing rods to reciprocate, thereby driving the universal joint to swing.

[0011] Furthermore, the drive mechanism includes:

[0012] A drive motor is mounted on the surface of the workbench;

[0013] A drive shaft is connected to the output shaft of a drive motor, and a crank is provided at the end of the drive shaft.

[0014] The support wheel is driven to the drive shaft via a gear set or chain set;

[0015] The swing arm has an elongated hole along its length for the crank arm to be inserted into, so as to drive the swing arm to move back and forth during the rotation of the crank.

[0016] Furthermore, the first clamping mechanism includes a U-shaped bracket, with two support wheels rotatably connected to the bottom sidewall of the U-shaped bracket;

[0017] The top side wall of the U-shaped bracket is provided with a pressure rod that can be adjusted vertically, and the pressing wheel is rotatably connected to the lower end of the pressure rod.

[0018] Furthermore, the pressure rod slides through the top sidewall of the U-shaped bracket, and a compression spring is sleeved on the rod body at a position below the top sidewall of the U-shaped bracket.

[0019] Furthermore, the two support wheels and the pressing wheel are arranged in an isosceles triangle.

[0020] Furthermore, the rim surface of the pressing wheel is provided with a flexible layer.

[0021] Furthermore, the linear slide rail is arranged along the width direction of the worktable, and the upper end of the swing rod is correspondingly connected to the bottom surface of the slider.

[0022] Furthermore, the two ends of the linear slide rail are connected to the two ends of the workbench in the width direction by support plates; the bottom wall of the linear slide rail is provided with an opening for the swing rod to pass through.

[0023] Compared with the prior art, the beneficial effects of this utility model are:

[0024] 1. The drive mechanism simplifies the power transmission path and reduces energy consumption and mechanical complexity by linking the rotation of the support wheel and the swing arm through a single transmission shaft. The elongated hole design of the crank and the swing arm enables synchronous control of the reciprocating movement of the swing arm and the rotation of the transmission shaft, improving the coordination and repeatability of the testing process.

[0025] 2. The device can simultaneously drive the drive shaft to rotate and the universal joint to wobble via a drive mechanism (one drive motor, drive shaft, and crank), enabling durability testing of the dust cover under combined "rotation + wobble" conditions. This design is closer to real-world usage scenarios and can comprehensively verify the dust cover's sealing and tear resistance under dynamic loads.

[0026] 3. The first clamping mechanism adopts a combination design of U-shaped bracket, support wheel and pressing wheel. The pressing wheel is automatically springed back and clamped by compression spring. It is easy to operate and highly adaptable. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of this utility model;

[0028] Figure 2 This is a schematic diagram of the assembly structure of the workbench, the first clamping mechanism, and the drive mechanism in this utility model.

[0029] Figure 3 This is a right view of the assembly structure of the workbench, the first clamping mechanism, and the drive mechanism in this utility model.

[0030] Figure 4 This is a schematic diagram of the assembly structure of the worktable, the second clamping mechanism, and the drive mechanism in this utility model.

[0031] Figure 5 This is a right view of the assembly structure of the worktable, the second clamping mechanism, and the drive mechanism in this utility model.

[0032] In the diagram: 1. Workbench; 2. First clamping mechanism; 21. Support wheel; 22. Pressing wheel; 23. U-shaped bracket; 24. Pressure rod; 25. Compression spring; 3. Second clamping mechanism; 31. Linear slide rail; 32. Slider; 33. Connector; 34. Swing rod; 35. Support plate; 4. Drive mechanism; 41. Drive motor; 42. Transmission shaft; 43. Crank. Detailed Implementation

[0033] The present invention will be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention. In the description of the present invention, it should be understood that if terms such as "upper", "lower", "front", "rear", "left", "right" indicate orientation or positional relationship, they are only corresponding to the drawings of this application for the convenience of describing the present invention. It should be understood that if terms such as "end", "side", "end portion", "side part", "lateral", "longitudinal", etc. indicate orientation or positional relationship, they are only corresponding to the length and width of the corresponding component. That is, "end" indicates the head and tail area in the length direction of the corresponding component, and "side part" indicates the head and tail area in the width direction of the corresponding component. They are used for the convenience of describing the present invention and do not indicate or imply that the device or element referred to must have a specific orientation.

[0034] Example 1, in conjunction with Appendix Figure 1-5A vehicle dust cover testing device includes a workbench 1. Two first clamping mechanisms 2 for clamping drive shafts and two second clamping mechanisms 3 for clamping universal joints are symmetrically arranged in the center of the workbench 1, with the two second clamping mechanisms 3 located on either side of the first clamping mechanisms 2. The workbench 1 also includes a drive mechanism 4 capable of driving the first clamping mechanisms 2 to rotate the drive shaft and simultaneously driving the second clamping mechanisms 3 to deflect the universal joints. That is, the drive mechanism 4 drives the drive shaft to rotate and simultaneously drives the universal joints to deflect, thus achieving the function of testing the durability of the dust cover.

[0035] In one possible implementation, the first clamping mechanism 2 has a U-shaped bracket 23 (installed at a 90° angle, i.e., with the opening facing forward), two support wheels 21 for rolling support drive shafts, and a pressing wheel 22 for rolling pressing drive shafts.

[0036] Both support wheels 21 are rotatably connected to the bottom sidewall of the U-shaped bracket 23. The top sidewall of the U-shaped bracket 23 is equipped with a vertically adjustable pressure rod 24. For example, the pressure rod 24 slides through the top sidewall of the U-shaped bracket 23, and a compression spring 25 is fitted onto the rod body below the top sidewall of the U-shaped bracket 23. A pressing wheel 22 is rotatably connected to the lower end of the pressure rod 24. This allows the pressure rod 24 to be pulled upwards, further compressing the compression spring 25 and raising the pressing wheel 22 to provide space for the rotating shaft; and after the rotating shaft is placed, the return of the compression spring 25 causes the pressing wheel 22 to move downwards to press the rotating shaft, completing the clamping operation of the rotating shaft.

[0037] As needed, the pressure rod 24 is a prism rod with a lifting handle at the top.

[0038] Preferably, the two support wheels 21 and the pressing wheel 22 are arranged in an isosceles triangle.

[0039] It should be noted that: in the first clamping mechanism 2, only one support wheel 21 can be driven and connected to the drive shaft 42 of the drive mechanism 4, or both support wheels 21 can be driven and connected to the drive shaft 42 of the drive mechanism 4.

[0040] As required, the rim surface of the pressing wheel 22 is provided with a flexible layer.

[0041] In one possible example, the axle of the support wheel 21 is driven to the drive shaft 42 of the drive mechanism 4 via a gear set.

[0042] In one possible implementation, the second clamping mechanism 3 has a linear slide rail 31 and a slider 32 that slides with it. The linear slide rail 31 is arranged along the width direction of the worktable 1, and its two ends are connected to the two ends of the worktable 1 in the width direction by support plates 35. The slider 32 is rotatably connected to a connector 33 that can cooperate with a universal joint spline shaft (for example, one end of the connector 33 is sleeved on the universal joint spline shaft), and the outer side wall is provided with a swing rod 34 perpendicular to its sliding direction. As needed, the swing rod 34 is arranged vertically, and its upper end is connected to the bottom surface of the slider 32.

[0043] As needed, the bottom wall of the linear chute 31 is provided with an opening for the swing rod 34 to pass through.

[0044] In one possible implementation, the drive mechanism 4 includes a drive motor 41 mounted on the table surface of the workbench 1, the output shaft of the drive motor 41 is connected to a transmission shaft 42, and the end of the transmission shaft 42 is provided with a crank 43.

[0045] Among them, the support wheel 21 is driven to the drive shaft 42 through a gear set or chain set;

[0046] The swing arm 34 is provided with an elongated hole along its length for the crank 43 to be inserted into, so as to drive the swing arm 34 to reciprocate during the rotation of the crank 43.

[0047] In one example, the drive shaft 42 is rotatably connected to the bottom side wall of the U-shaped bracket 23 via a bearing.

[0048] If necessary, crank 43 can be connected to the end of drive shaft 42 via a gearbox.

[0049] In this way, the drive motor 41 drives the transmission shaft 42 to rotate, and the transmission shaft 42 drives the support wheel 21 to rotate, thus making the rotating shaft rotate. At the same time, the transmission shaft 42 also drives the crank 43 to rotate. The circular motion of the crank 43 drives the swing rod 34 to move back and forth, causing the universal joint to swing, thus realizing the function of the test protective cover.

[0050] The parts of this utility model not described in detail are prior art. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that this utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the above embodiments should be regarded as exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended to include all changes that fall within the meaning and scope of the equivalents of the claims in this utility model, and no reference numerals in the claims should be regarded as limiting the content of the claims.

Claims

1. A testing device for automobile dust covers, characterized in that, The worktable (1) includes two first clamping mechanisms (2) for clamping the drive shaft and two second clamping mechanisms (3) for clamping the universal joint, which are symmetrically arranged in the middle of the upper surface of the worktable (1). The two second clamping mechanisms (3) are located on both sides of the first clamping mechanism (2). The first clamping mechanism (2) has two support wheels (21) for rolling support drive shafts and a pressing wheel (22) for rolling pressing drive shafts. The second clamping mechanism (3) has a linear slide rail (31) and a slider (32) that slides with it. The slider (32) is rotatably connected to a connector (33) that can cooperate with a universal joint spline shaft. The outer wall is provided with a swing rod (34) perpendicular to its sliding direction. The workbench (1) is also provided with a drive mechanism (4) that is connected to the support wheels (21) of the two first clamping mechanisms (2) and the swing rods (34) of the two second clamping mechanisms (3) so as to simultaneously drive the support wheels (21) to rotate and drive the transmission shaft to rotate and drive the swing rods (34) to reciprocate and drive the universal joint to swing.

2. The automotive dust cover testing device according to claim 1, characterized in that: The drive mechanism (4) includes: A drive motor (41) is installed on the upper surface of the worktable (1); A drive shaft (42) is connected to the output shaft of a drive motor (41), and a crank (43) is provided at the end of the drive shaft (42). The support wheel (21) is driven to the drive shaft (42) via a gear set or chain set; The swing rod (34) has an elongated hole along its length for the crank (43) handle to be inserted into, so as to drive the swing rod (34) to move back and forth during the rotation of the crank (43).

3. The automotive dust cover testing device according to claim 1, characterized in that: The first clamping mechanism (2) includes a U-shaped bracket (23), and two support wheels (21) are rotatably connected to the bottom side wall of the U-shaped bracket (23); The top side wall of the U-shaped bracket (23) is provided with a pressure rod (24) whose vertical position is adjustable, and the pressing wheel (22) is rotatably connected to the lower end of the pressure rod (24).

4. The automotive dust cover testing device according to claim 3, characterized in that: The pressure rod (24) slides through the top side wall of the U-shaped bracket (23), and a compression spring (25) is sleeved on the rod body at the position below the top side wall of the U-shaped bracket (23).

5. The automotive dust cover testing device according to claim 1, characterized in that: The two support wheels (21) and the pressing wheel (22) are arranged in an isosceles triangle.

6. The automotive dust cover testing device according to claim 1, characterized in that: The rim surface of the pressing wheel (22) is provided with a flexible layer.

7. The automotive dust cover testing device according to claim 1, characterized in that: The linear slide rail (31) is arranged along the width direction of the worktable (1), and the upper end of the swing rod (34) is connected to the bottom surface of the slider (32).

8. The automotive dust cover testing device according to claim 7, characterized in that: The two ends of the linear slide rail (31) are connected to the two ends of the workbench (1) in the width direction by the support plate (35); the bottom wall of the linear slide rail (31) is provided with an opening for the swing rod (34) to pass through.

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