A fatigue test and performance evaluation tool for a rotating assembly

Abstract

The utility model discloses a fatigue test and performance evaluation frock of rotating assembly, including bottom plate and mounting seat, a plurality of mounting seat linear array connection is in the bottom plate, the both sides fixed connection of bottom plate has first rotating seat, and the first rotating seat is rotatably connected with rotating support, and the fixed connection of the both ends of a pair of rotating supports has crosspiece, and the side of crosspiece is provided with a plurality of linear array distribution's connecting piece, and the connecting piece is connected with work piece, and the end of work piece is connected in mounting seat, the middle part fixed connection of crosspiece has second rotating seat, and the end fixed connection of bottom plate has third rotating seat, and the connecting of second rotating seat and third rotating seat has pneumatic cylinder. Through the start and stop of control pneumatic cylinder, through second rotating seat and push crosspiece reciprocating rotation, and work piece is connected with crosspiece through sucking disc. The life of this work piece can be obtained. Since testing to multiple work pieces simultaneously, save the test time, improve the test efficiency.

Description

Technical Field

[0001] This utility model relates to a fatigue testing and performance evaluation fixture for a rotating component, and particularly to its flipping structure, belonging to the field of testing fixture technology. Background Technology

[0002] Rotating components are widely used in mechanical equipment, such as bearing assemblies and rearview mirrors with rotating shafts. Their fatigue durability directly affects the reliability and service life of the entire mechanical equipment. Relevant product standards specify fatigue testing methods. Therefore, after the manufacturing of rotating components, fatigue testing and performance evaluation are necessary to determine whether they meet the standards. Existing testing fixtures for rotating components have many shortcomings. A single test can only be performed on a single workpiece. After testing multiple workpieces consecutively, the average value is calculated. This process is time-consuming and inefficient. Therefore, how to test multiple workpieces simultaneously is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0003] To overcome the above-mentioned shortcomings, the purpose of this utility model is to provide a fatigue testing and performance evaluation fixture for rotating components.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a fatigue testing and performance evaluation fixture for a rotating component, comprising a base plate and mounting seats, wherein a plurality of mounting seats are connected to the base plate in a linear array; a first rotating seat is fixedly connected to both sides of the base plate, a rotating bracket is rotatably connected to the first rotating seat, a crossbar is fixedly connected between the ends of a pair of rotating brackets, a plurality of connecting pieces are arranged in a linear array on the side of the crossbar, a workpiece is connected to the connecting piece, and the end of the workpiece is connected to the mounting seat; a second rotating seat is fixedly connected to the middle of the crossbar, a third rotating seat is fixedly connected to the end of the base plate, and a cylinder is connected between the second rotating seat and the third rotating seat.

[0005] The present invention is further configured such that: the workpiece includes a fixing part, a mirror part, and a rotating shaft; one end of the fixing part is threadedly connected to the mounting seat, and the other end is rotatably connected to the mirror part through the rotating shaft; the mirror part is connected to the connecting piece; the rotating shaft and the first rotating seat are on the same straight line.

[0006] A further feature of this invention is that the connecting member is a suction cup or a clamp.

[0007] The present invention is further configured such that: a vertical first limiting post is fixedly connected to the base plate, the bottom end of the first limiting post is connected to a limiting plate, and the other end of the limiting plate is connected to the bottom end of the first rotating seat.

[0008] The present invention is further configured such that: the top surface of the first limiting post is an inclined surface; when the rotating bracket rotates until it abuts against the first limiting post, the inclined surface is flush with the side surface of the rotating bracket.

[0009] The present invention is further configured such that: a vertical second limiting post is fixedly connected to the base plate, the top end of the second limiting post is connected to a horizontally arranged extension plate, and the other end of the extension plate abuts against the side of the vertically positioned bracket; the second limiting post and the first limiting post are arranged opposite to each other on both sides of the first rotating seat.

[0010] The present invention is further configured such that: the mounting base is inclined, and the rotating bracket rotates at a 45-degree angle between the inclined surface and the extension plate.

[0011] Compared with existing technologies, the advantages of this invention are as follows: Workpieces are mounted on a mounting base and connected to a crossbar via suction cups. Both ends of the crossbar are connected to a rotating bracket, which rotates on a first rotating seat. The first rotating seat, the rotating bracket, and the crossbar form a rotating bracket. By controlling the start and stop of a cylinder, the crossbar is pushed to reciprocate through a second rotating seat until one of the workpieces is damaged. The number of cylinder starts is recorded to determine the lifespan of the workpiece. The damaged workpiece is removed, and the remaining workpieces are tested until the last workpiece is damaged, completing the test. Because multiple connectors are installed on the crossbar, each connector connecting to one workpiece, multiple workpieces can be tested simultaneously, saving testing time and improving testing efficiency. Attached Figure Description

[0012] Figure 1 A structural schematic diagram of the workpiece, base plate, and mounting base;

[0013] Figure 2 A schematic diagram of the fixture for fatigue testing and performance evaluation of rotating components;

[0014] Figure 3 This is a schematic diagram of the fatigue testing and performance evaluation fixture for rotating components from another perspective.

[0015] In the diagram: 1. Base plate; 2. Mounting seat; 3. Fixing part; 4. Mirror surface; 5. First rotating seat; 6. Rotating bracket; 7. Crossbar; 8. Suction cup; 9. Second rotating seat; 10. Cylinder; 11. Third rotating seat; 12. First limiting post; 13. Second limiting post; 14. Extension plate; 15. Inclined surface; 16. Limiting plate; 17. Rotating shaft. Detailed Implementation

[0016] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0017] See appendix Figure 1-3 As shown, a fatigue testing and performance evaluation fixture for a rotating component in this embodiment includes a base plate 1 and a mounting base 2. A plurality of mounting bases 2 are connected to the base plate 1 in a linear array. First rotating seats 5 are fixedly connected to both sides of the base plate 1. Rotating brackets 6 are rotatably connected to the first rotating seats 5. A crossbar 7 is fixedly connected between the ends of a pair of rotating brackets 6. A plurality of connecting members arranged in a linear array are provided on the side of the crossbar 7. Workpieces are connected to the connecting members, and the ends of the workpieces are connected to the mounting bases 2. A second rotating seat 9 is fixedly connected to the middle of the crossbar 7, and a third rotating seat 11 is fixedly connected to the end of the base plate 1. A cylinder 10 connects the second rotating seat 9 and the third rotating seat 11. The workpiece is a rearview mirror with a rotating shaft, including a fixing part 3, a mirror surface 4, and a rotating shaft 17. One end of the fixing part 3 is threadedly connected to the mounting base 2, and the other end is rotatably connected to the mirror surface 4 via the rotating shaft 17. The mirror surface 4 is connected to the connecting members. The rotating shaft 17 and the first rotating seat 5 are on the same straight line. In this patent application, the connector is a suction cup 8. Clamps in the prior art can also be used as connectors and are applicable to this patent application, as long as they can connect the mirror surface 4 to the crossbar 7.

[0018] A vertical first limiting post 12 is fixedly connected to the base plate 1. A limiting plate 16 is connected to the bottom end of the first limiting post 12, and the other end of the limiting plate 16 is connected to the bottom end of the first rotating seat 5. The top surface of the first limiting post 12 is an inclined surface 15. When the rotating bracket 6 rotates until it abuts against the first limiting post 12, the inclined surface 15 is flush with the side surface of the rotating bracket 6. A vertical second limiting post 13 is fixedly connected to the base plate 1. A horizontally arranged extension plate 14 is connected to the top end of the second limiting post 13, and the other end of the extension plate 14 abuts against the side surface of the vertically positioned bracket 6. The second limiting post 13 and the first limiting post 12 are arranged opposite each other on both sides of the first rotating seat 5. The mounting base 2 is inclined, and the rotating bracket 6 rotates at a 45-degree angle between the inclined surface 15 and the extension plate 14.

[0019] In summary, the principle of the fatigue testing and performance evaluation fixture for the rotating assembly shown in this utility model is as follows: A workpiece is mounted on the mounting base 2, and the workpiece is connected to the crossbar 7 via a suction cup 8. Both ends of the crossbar 7 are connected to the rotating bracket 6, which rotates on the first rotating seat 5. The first rotating seat 5, the rotating bracket 6, and the crossbar 7 form the rotating bracket. By controlling the start and stop of the cylinder 10, the crossbar 7 is pushed to rotate reciprocally via the second rotating seat 9 until one of the workpieces is damaged. The number of times the cylinder 10 is started is recorded, thus determining the lifespan of the workpiece. The damaged workpiece is removed, and the remaining workpieces are tested until the last workpiece is damaged, completing the test. Because multiple connectors are provided on the crossbar 7, each connector connects to one workpiece, allowing for simultaneous testing of multiple workpieces, testing time is saved and testing efficiency is improved. The mounting base 2 is inclined, and the rotating bracket 6 rotates at a 45-degree angle between the inclined surface 15 and the extension plate 14. The inclined surface 15 and the extension plate 14 limit the rotation range of the rotating bracket 6, preventing the cylinder 10 from damaging the workpiece.

[0020] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They cannot be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model.

Claims

1. A fatigue testing and performance evaluation fixture for a rotating component, comprising a base plate (1) and mounting seats (2), wherein a plurality of mounting seats (2) are connected in a linear array on the base plate (1); characterized in that, The base plate (1) is fixedly connected to the two sides of the first rotating seat (5), and the first rotating seat (5) is rotatably connected to the rotating bracket (6). A crossbar (7) is fixedly connected between the ends of a pair of rotating brackets (6). Several connecting parts arranged in a straight array are provided on the side of the crossbar (7). Workpieces are connected to the connecting parts, and the ends of the workpieces are connected to the mounting base (2). The middle part of the crossbar (7) is fixedly connected to the second rotating seat (9), and the end of the base plate (1) is fixedly connected to the third rotating seat (11). A cylinder (10) is connected between the second rotating seat (9) and the third rotating seat (11).

2. The fatigue testing and performance evaluation fixture for the rotating assembly according to claim 1, characterized in that, The workpiece includes a fixing part (3), a mirror part (4) and a rotating shaft (17). One end of the fixing part (3) is threadedly connected to the mounting base (2), and the other end is rotatably connected to the mirror part (4) through the rotating shaft (17). The mirror part (4) is connected to the connecting piece. The rotating shaft (17) and the first rotating seat (5) are on the same straight line.

3. The fatigue testing and performance evaluation fixture for the rotating assembly according to claim 2, characterized in that, The connector is a suction cup (8) or a clamp.

4. The fatigue testing and performance evaluation fixture for the rotating assembly according to claim 3, characterized in that, A vertical first limiting post (12) is fixedly connected to the base plate (1). The bottom end of the first limiting post (12) is connected to a limiting plate (16), and the other end of the limiting plate (16) is connected to the bottom end of the first rotating seat (5).

5. The fatigue testing and performance evaluation fixture for the rotating assembly according to claim 4, characterized in that, The top surface of the first limiting post (12) is an inclined surface (15); when the rotating bracket (6) rotates until it abuts against the first limiting post (12), the inclined surface (15) is flush with the side surface of the rotating bracket (6).

6. The fatigue testing and performance evaluation fixture for the rotating assembly according to claim 5, characterized in that, A vertical second limiting post (13) is fixedly connected to the base plate (1). The top of the second limiting post (13) is connected to a horizontally arranged extension plate (14). The other end of the extension plate (14) abuts against the side of the vertical bracket (6). The second limiting post (13) and the first limiting post (12) are arranged opposite to each other on both sides of the first rotating seat (5).

7. The fatigue testing and performance evaluation fixture for the rotating assembly according to claim 6, characterized in that, The mounting base (2) is inclined, and the rotating bracket (6) rotates at a 45-degree angle between the inclined surface (15) and the extension plate (14).

Images