Roller freedom detection device

Abstract

The utility model discloses a kind of free degree detection devices of gyro wheel, including detection table, detection support is movably installed on the detection table by detection lifting seat, the detection support is floatingly connected with detection lifting seat, detection driving wheel is rotatably supported on detection support, detection driving wheel is driven by detection driving device through gear belt transmission pair, detection driven wheel is also rotatably supported on detection support, the detection driven wheel is rotated by the detected rocker arm gyro wheel driven rotation of detection driving wheel, detection driven wheel and detection driving office are respectively connected with angle sensor transmission. The utility model can automatically detect the rotation flexibility of rocker arm gyro wheel.

Description

Technical Field

[0001] This utility model relates to a quality inspection device, and more particularly to a device for detecting the rotational flexibility of the rollers on an engine rocker arm. Background Technology

[0002] The rocker arm is a crucial component of an engine, used to control the opening and closing of engine valves via a camshaft. Its manufacturing and assembly quality significantly impacts engine performance. Rollers are often installed on the rocker arm to reduce friction between the rocker arm and connected components. These rollers must ensure smooth operation; otherwise, sliding friction may occur, increasing resistance and wear on contact surfaces, thus affecting engine performance and lifespan. However, there are relatively few methods for testing roller flexibility, and it is usually determined by inspectors rotating the rollers based on their senses. This method is neither quantifiable, yields inaccurate results, nor efficient. Utility Model Content

[0003] In view of the above-mentioned shortcomings of the existing technology, the technical problem to be solved by this utility model is to provide a roller degree of freedom detection device, which can automatically detect the rotational flexibility of the roller on the rocker arm.

[0004] To solve the above-mentioned technical problems, the present invention provides a roller degree of freedom detection device, including a detection platform. A detection bracket is movably mounted on the detection platform via a detection lifting seat. The detection bracket is floatingly connected to the detection lifting seat. A detection drive wheel is rotatably supported on the detection bracket and is driven by a detection drive device. A detection driven wheel is also rotatably supported on the detection bracket and is driven to rotate by the detection drive wheel through the detected rocker arm roller. The detection driven wheel is connected to an angle sensor.

[0005] After adopting the above technical solution, the detection drive wheel and detection driven wheel, which are rotatably supported on the detection bracket, can move up and down with the detection lifting seat. This allows the detection drive wheel and detection driven wheel to simultaneously contact the rollers on the rocker arm to be tested, which are fixedly installed below by the detection positioning mounting seat. The floating connection between the detection bracket and the detection lifting seat ensures that the outer diameters of the detection drive wheel and the detection driven wheel can reliably contact the rollers on the rocker arm simultaneously. After the detection drive device drives the detection drive wheel to rotate, it will drive the rollers to rotate, and the rollers will drive the detection driven wheel to rotate accordingly. The angle sensor, which is connected to the detection driven wheel, will record the operating parameters of the detection driven wheel in real time. The obtained detection data is compared with the operating parameters of the detection drive device through the detection control system. If they are the same, it indicates that the rollers are of good manufacturing and installation quality and there is no jamming or obstruction in the movement process. If the operating parameters obtained from the angle sensor are inconsistent with the operating parameters of the detection drive device, such as a decrease in rotation speed or uneven speed, it indicates that there is a problem with the manufacturing and installation of the rollers. By comparing the differences between the two sets of operating parameters, an accurate judgment can be made on whether the rotational flexibility of the rollers is qualified, thereby automatically detecting the rotational flexibility of the rollers on the rocker arm.

[0006] In a preferred embodiment of this invention, two guide columns are vertically arranged on the testing platform, and the testing lifting seat is sleeved on the two guide columns. The testing lifting seat is driven downward by a lifting drive cylinder through a compression spring. This embodiment ensures that the testing bracket can move up and down on the testing platform via the testing lifting seat. Furthermore, the downward movement of the testing bracket by the compression spring ensures that the testing drive wheel and the testing driven wheel on the testing bracket are in close contact with the rollers on the rocker arm, maintaining appropriate pressure. This avoids the problem of slippage between the testing drive wheel or the testing driven wheel and the rollers due to insufficient contact, which could affect the testing results.

[0007] In another preferred embodiment of this utility model, a support shaft is provided on the detection lifting seat. The detection bracket is swayably mounted on the support shaft, which is located above the detection drive wheel and the detection driven wheel. A floating connecting spring is provided above the detection bracket and between it and the detection lifting seat, with two floating connecting springs located on the left and right sides of the support shaft. With this embodiment, the detection bracket can swing on the support shaft, and the two floating connecting springs ensure that the detection drive wheel and the detection driven wheel make uniform contact with the rollers, thus forming a floating connection between the detection bracket and the detection lifting seat. This avoids differences in operating parameters caused by unequal contact stress between the detection drive wheel, the detection driven wheel, and the rollers due to incorrect positioning, ensuring the accuracy of the detection.

[0008] In another preferred embodiment of this utility model, the detection drive device is a servo motor, which is mounted on the detection bracket. Using this embodiment, the servo motor can operate accurately according to the instructions of the detection control system and can feed back the operating parameters to the detection control system, thereby enabling the detection control system to make accurate comparisons and judgments on the roller's operational flexibility.

[0009] In a further preferred embodiment of this invention, the servo motor is connected to the detection drive wheel via a toothed belt. This embodiment ensures good operational consistency between the driving and driven pulleys of the toothed belt drive, guaranteeing that the operating parameters of the detection drive device and the detection drive wheel are identical.

[0010] In another preferred embodiment of this invention, the detection drive wheel is connected to another angle sensor via a transmission connection. With this embodiment, the detection drive wheel is also connected to the angle sensor, so the actual operating parameters of the detection drive wheel are also obtained through the angle sensor. The comparison between the operating parameters of the detection drive wheel and the operating parameters of the driven wheel is more direct, reducing the impact of transmission errors between the detection drive device and the detection drive wheel on the detection results, resulting in more accurate detection results.

[0011] In another preferred embodiment of this invention, the angle sensor is connected to the support shaft of the corresponding driving wheel or driven wheel via a coupling. Using this embodiment, the angle sensor can directly obtain the operating parameters of the driving and driven wheels, and it has a compact structure and small detection error.

[0012] In a further preferred embodiment of this invention, the angle sensor is an incremental sensor, which is mounted on a detection bracket. Using this embodiment, the incremental sensor generates pulse signals through rotational motion, making it a high-precision measuring device that well meets the application requirements.

[0013] In another further preferred embodiment of this invention, the outer diameter of the detection drive wheel is equal to the outer diameter of the detection driven wheel. With this embodiment, the rotational speeds of the detection drive wheel and the detection driven wheel can be the same, and the results detected by the two angle sensors can be directly compared without conversion. Attached Figure Description

[0014] The roller degree of freedom detection device of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0015] Figure 1 This is a schematic diagram of a specific embodiment of the roller degree of freedom detection device of this utility model;

[0016] Figure 2 yes Figure 1Top view of the structure shown;

[0017] Figure 3 yes Figure 1 A cross-sectional view of part AA in the structure shown;

[0018] Figure 4 yes Figure 1 A cross-sectional view of the BB section in the structure shown;

[0019] Figure 5 yes Figure 1 A cross-sectional view of the CC region in the structure shown.

[0020] In the diagram: 1-Detection platform, 2-Guide column, 3-Rocker arm, 4-Roller, 5-Detection driven wheel, 6-Detection drive wheel, 7-Detection bracket, 8-Bracket support shaft, 9-Toothed belt, 10-Detection lifting seat, 101-Lifting seat upper arm, 102-Bracket shaft clamping seat, 11-Compression spring, 12-Lifting drive cylinder, 13-Detection drive device, 14-Angle sensor, 15-Coupling, 16-Floating connection spring. Detailed Implementation

[0021] exist Figure 1 and Figure 2 In the roller freedom testing device shown, the testing platform 1 is the basic support component of this testing device, and the testing bracket 7 is movably mounted on the testing platform 1 via the testing lifting seat 10. A testing drive wheel 6 and a testing driven wheel 5 are rotatably supported on the testing bracket 7. The testing drive wheel 6 and the testing driven wheel 5 are preferably steel wheels, or steel wheels with plastic or rubber wheels fitted over them. The outer diameter of the testing drive wheel 6 is equal to the outer diameter of the testing driven wheel 5. (See [reference]). Figure 3The driven wheel 5 is fixedly connected to the support shaft, which is rotatably supported on the detection bracket 7 via bearings. The driving wheel 6 is rotatably supported on the detection bracket 7 in the same manner. A detection drive device 13 is also fixedly connected to the detection bracket 7. The detection drive device 13 is preferably a servo motor, which is connected to the driving wheel 6 via a toothed belt 9. The tension of the toothed belt 9 can be achieved by fixing the detection bracket portion with the detection drive device 13 to the main body of the detection bracket 7 via a vertically adjustable connecting plate, or by setting a tensioning wheel. In this way, the driving wheel 6 is driven by the detection drive device 13, while the driven wheel 6 is rotatably supported on the detection bracket 7 via bearings. The driven wheel 5 is driven to rotate by the detection drive wheel 6 through the roller 4 on the rocker arm 3 being detected. The rocker arm 3 being detected is fixedly mounted on the detection table 1 through the detection positioning mounting seat, and the roller 4 is located in the middle and below between the detection drive wheel 6 and the detection driven wheel 5. The detection driven wheel 5 is connected to the rotating shaft of an angle sensor 14. The preferred connection method is that the rotating shaft of the angle sensor 14 is connected to the supporting rotating shaft of the detection driven wheel 5 through a coupling 15. As a preferred method, the detection drive wheel 6 is connected to another angle sensor 14 in the same way. The two angle sensors 14 are incremental sensors with the same specifications and parameters. The incremental sensors are mounted on the detection bracket 7.

[0022] The detection bracket 7 is floatingly connected to the detection lifting seat 10. The detection lifting seat 10 is a complex-shaped component, which includes an upper lifting seat arm 101 and a bracket shaft clamping seat 102 fixed thereto. See [reference needed]. Figure 3 A support shaft 8 is provided on the detection lifting seat 10. The support shaft 8 is fixedly connected to the detection lifting seat 10 via a support shaft clamping seat 102. The detection bracket 7 is swayably mounted on the support shaft 8 via a bearing. The support shaft 8 is located above the detection drive wheel 6 and the detection driven wheel 5. (See also...) Figure 4 A floating connecting spring 15 is provided between the upper arm 101 of the lifting seat of the detection lifting seat 10 and the upper arm 101 of the detection lifting seat 7. The floating connecting spring 15 is a compression spring, and the two floating connecting springs 15 are respectively located on the left and right sides of the support shaft 8 of the support.

[0023] See Figure 5 Two guide pillars 2 are vertically arranged on the testing table 1. The testing lifting seat 10 is sleeved on the two guide pillars 2. The two guide pillars 2 are connected above each other by a guide pillar connecting plate. A lifting drive cylinder 12 is installed on the guide pillar connecting plate. A drive rod is installed on the piston rod end of the lifting drive cylinder 12. The drive rod is movably inserted into the testing lifting seat 10. A table fan is provided at the lower end of the drive rod, which can drive the testing lifting seat 10 to move upward. A compression spring 11 is installed between the upper side of the testing lifting seat 10 and the drive rod. The testing lifting seat 10 is driven downward by the lifting drive cylinder 12 through the compression spring 11.

[0024] When testing the flexibility of the rollers 4 on the rocker arm 3, the rocker arm 3 to be tested is fixedly mounted on the rocker arm positioning mounting seat on the testing table 1. The lifting drive cylinder 12 drives the testing bracket 7, which is floatingly supported on the testing lifting seat 10, to move downward through the compression spring 11 and the testing lifting seat 10, so that the testing drive wheel 6 and the testing driven wheel 5 simultaneously contact the rollers 4 on the rocker arm 3 to be tested below. The compression spring 11 ensures that the testing drive wheel 6 and the testing driven wheel 5 exert appropriate pressure on the rollers 4. The testing drive device 13 drives the testing drive wheel 6 to run for a certain period of time at the rotation speed and rotation duration controlled by the testing control system, and drives the testing driven wheel 5 to run simultaneously through the rollers 4. The operation parameters of the testing drive wheel 6 and the testing driven wheel 5 are collected by their respective angle sensors 14 and uploaded to the testing control system. The testing control system compares the consistency of the relevant input and output operation data of the testing drive device 13 and the two angle sensors 14, and makes an accurate judgment on whether the rotation flexibility of the rollers 4 is qualified, thereby automatically detecting the rotation flexibility of the rollers 4 on the rocker arm 3.

[0025] The above are only some preferred embodiments of this utility model, but this utility model is not limited thereto, and many improvements and modifications can be made. Any improvements and modifications made based on the basic principles of this utility model should be considered to fall within the protection scope of this utility model.

Claims

1. A roller degree-of-freedom detection device, comprising a detection table (1), characterized in that: A detection bracket (7) is mounted on the detection platform (1) and can be moved up and down via a detection lifting seat (10). The detection bracket (7) is floatingly connected to the detection lifting seat (10). A detection drive wheel (6) is rotatably supported on the detection bracket (7). The detection drive wheel (6) is driven by a detection drive device (13). A detection driven wheel (5) is also rotatably supported on the detection bracket (7). The detection driven wheel (5) is driven to rotate by the detection drive wheel (6) through the rocker arm roller being detected. The detection driven wheel (5) is connected to an angle sensor (14) via a transmission.

2. The roller degree-of-freedom detection device according to claim 1, characterized in that: Two guide columns (2) are vertically arranged on the testing platform (1). The testing lifting seat (10) is sleeved on the two guide columns (2). The testing lifting seat (10) is driven to move downward by the lifting drive cylinder (12) through the compression spring (11).

3. The roller degree-of-freedom detection device according to claim 1 or 2, characterized in that: A support shaft (8) is provided on the detection lifting seat (10). The detection bracket (7) is swayably mounted on the support shaft (8). The support shaft (8) is located above the detection drive wheel (6) and the detection driven wheel (5). A floating connecting spring (16) is provided above the detection bracket (7) and between the detection lifting seat (10). The two floating connecting springs (16) are respectively located on the left and right sides of the support shaft (8).

4. The roller degree-of-freedom detection device according to claim 1, characterized in that: The detection drive device (13) is a servo motor, which is mounted on the detection bracket (7).

5. The roller degree-of-freedom detection device according to claim 4, characterized in that: The servo motor is connected to the detection drive wheel (6) via a toothed belt (9).

6. The roller degree-of-freedom detection device according to claim 1, characterized in that: The detection drive wheel (6) is connected to another angle sensor (14) via a transmission.

7. The roller degree-of-freedom detection device according to claim 1 or 6, characterized in that: The angle sensor (14) is connected to the support shaft of the corresponding detection drive wheel (6) or the support shaft of the detection driven wheel (5) via a coupling (15).

8. The roller degree-of-freedom detection device according to claim 1 or 6, characterized in that: The angle sensor (14) is an incremental sensor, and the angle sensor (14) is mounted on the detection bracket (7).

9. The roller degree-of-freedom detection device according to claim 1, characterized in that: The outer diameter of the detection drive wheel (6) is equal to the outer diameter of the detection driven wheel (5).

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