Fatigue resistance testing device for plastic gear

Abstract

The utility model discloses a plastic gear fatigue resistance testing device, which is used for testing plastic gears and comprises a supporting seat and a testing table at the top of the supporting seat, a control center is arranged outside the supporting seat, and an adjusting and positioning mechanism for positioning plastic gears to be tested with different sizes and specifications is arranged in the testing table. According to the fatigue resistance testing device for the plastic gear, through cooperative use of the electric telescopic rod and the first connecting column, stable abutting and fixing of an inner hole of the plastic gear are achieved. And meanwhile, due to the sliding expansion design of the positioning arc-shaped plate in the limiting frame, the fixing firmness is enhanced, the requirements of inner holes of plastic gears of different sizes are met, and the universality and flexibility of the device are improved. In addition, the position of the test gear can be easily changed by rotating the handle to adjust the adjusting screw rod, so that the test gear is meshed with the plastic gear, and the test accuracy and efficiency are further improved.

Description

Technical Field

[0001] This utility model relates to the technical field of plastic gear testing devices, specifically to a plastic gear fatigue resistance testing device. Background Technology

[0002] With the widespread application of plastic gears in mechanical equipment, the requirements for their durability and reliability are increasing. To meet this demand, plastic gear fatigue testing devices are often used in the production of plastic gears to simulate gear operation under actual working conditions in order to evaluate the fatigue resistance of plastic gears.

[0003] For example, a Chinese patent (authorization announcement number CN218847627U) discloses a fatigue testing device for plastic gears. This existing device uses a rotary driver to rotate a mounting rod, which in turn rotates another mounting rod through gear meshing. The two mounting rods then move two first gears laterally, pulling the connecting belt and causing the second gear to move towards the slot, thus completing the fatigue test on the plastic gear. However, this existing device relies on a rotary driver to rotate the mounting rod and on gear meshing to rotate the other mounting rod, thereby achieving the lateral movement of the two first gears. This mechanical linkage method has limited adaptability to gears of different sizes, requiring precise mechanical design and debugging, and the adjustment process is relatively cumbersome. Especially when the gear size varies significantly, it may be necessary to replace mounting rods or gears of different sizes, increasing the complexity and cost of test preparation. Furthermore, if the connecting belt becomes loose, wears, or breaks during the test, it can cause instability in the fixing mechanism, thus affecting the fatigue test results of the plastic gear. Utility Model Content

[0004] The purpose of this invention is to provide a fatigue testing device for plastic gears. By introducing an adjustment and positioning mechanism and an adjustment and testing mechanism, it effectively improves the adaptability to plastic gears of different sizes, the accuracy and reliability of the test, and the flexibility of adjusting the position of the test gear.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a plastic gear fatigue testing device for testing plastic gears, including a support base and a test platform on top of it, a control center is provided outside the support base, and an adjustment and positioning mechanism is provided in the test platform for positioning plastic gears of different sizes and specifications to be tested.

[0006] The adjustment and positioning mechanism includes multiple connecting plates movably disposed outside the test bench, and a positioning arc plate for positioning the inner hole of the plastic gear is rotatably disposed outside the connecting plates.

[0007] The test bench is also equipped with an adjustment test mechanism for fatigue testing of plastic gears.

[0008] The adjustment and testing mechanism includes test gears that can mesh with plastic gears of different sizes for testing.

[0009] Preferably, the adjustment and positioning mechanism further includes a mounting plate disposed on the top of the test bench, the top of the mounting plate being provided with a limiting frame, and the bottom end of the positioning arc plate being slidably disposed within the limiting frame.

[0010] Preferably, the adjustment and positioning mechanism further includes a mounting frame disposed in the test bench, wherein an electric telescopic rod is disposed in the mounting frame, a first connecting column is disposed at the output end of the electric telescopic rod, and a sleeve is disposed outside the first connecting column.

[0011] Preferably, the multiple connecting plates are arranged in pairs outside the sleeve.

[0012] Preferably, the side of the connecting plate closest to the sleeve is rotatably mounted to the outside of the sleeve.

[0013] Preferably, the mounting plate has a connecting hole through which the first connecting post passes, and the bottom end of the mounting plate is movably connected to the mounting frame.

[0014] Preferably, the adjustment and testing mechanism further includes an adjustment screw rotatably disposed in the test bench, a handle disposed on the outside of the adjustment screw, a movable plate externally threaded onto the adjustment screw, a mounting base disposed at the bottom of the movable plate, a drive motor disposed in the mounting base, a second connecting column being drivenly connected to the output shaft of the drive motor, and the test gear disposed outside the second connecting column.

[0015] Preferably, the movable plate is slidably mounted in the test bench on the side away from the adjusting screw.

[0016] Compared with the prior art, this utility model provides a fatigue resistance testing device for plastic gears, which has the following advantages:

[0017] 1. This fatigue testing device for plastic gears achieves stable and tight fixing of the inner hole of the plastic gear through the cooperation of the electric telescopic rod and the first connecting column. Simultaneously, the sliding expansion design of the positioning arc plate within the limiting frame not only enhances the fixation's firmness but also adapts to the inner hole requirements of plastic gears of different sizes, improving the device's versatility and flexibility. Furthermore, by rotating the handle to adjust the adjusting screw, the position of the test gear can be easily changed to mesh with the plastic gear, further improving the accuracy and efficiency of the test.

[0018] 2. This plastic gear fatigue testing device features a smooth and easily controllable testing process, from fixing the plastic gear and adjusting its position to starting the drive motor and recording data. This simplifies the fatigue testing procedure for plastic gears and makes operation quick and easy. Furthermore, after the test, the plastic gear can be easily released by reversing the movement of the electric telescopic rod, facilitating rapid replacement of the tested gear and further improving testing efficiency and equipment utilization. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of a plastic gear fatigue resistance testing device according to the present invention. Figure 1 .

[0020] Figure 2 This is a three-dimensional structural diagram of a plastic gear fatigue resistance testing device according to the present invention. Figure 2 .

[0021] Figure 3 This is a partial three-dimensional structural diagram of the adjustment and positioning mechanism in a plastic gear fatigue resistance testing device of this utility model. Figure 1 .

[0022] Figure 4 This is a partial three-dimensional structural diagram of the adjustment and positioning mechanism in a plastic gear fatigue resistance testing device of this utility model. Figure 2 .

[0023] Figure 5 This is a schematic diagram of the three-dimensional structure of the adjustment and positioning mechanism in a plastic gear fatigue resistance testing device of this utility model. Figure 1 .

[0024] Figure 6 This is a schematic diagram of the three-dimensional structure of the adjustment and positioning mechanism in a plastic gear fatigue resistance testing device of this utility model. Figure 2 .

[0025] Figure 7 This is a three-dimensional structural diagram of the adjustment testing mechanism in a plastic gear fatigue resistance testing device of this utility model.

[0026] In the diagram: 1. Support base; 2. Test bench; 3. Plastic gear; 4. Adjustment and positioning mechanism; 41. Connecting plate; 42. Positioning arc plate; 43. Mounting plate; 44. Limiting frame; 45. Mounting bracket; 46. Electric telescopic rod; 47. First connecting column; 48. Sleeve; 5. Adjustment and testing mechanism; 51. Adjusting screw; 52. Handle; 53. Movable plate; 54. Mounting base; 55. Drive motor; 56. Second connecting column; 57. Test gear; 6. Control center. Detailed Implementation

[0027] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0028] Example 1: Please refer to Figures 1-7 This utility model provides a technical solution: a fatigue resistance testing device for plastic gears 3, used for testing plastic gears 3, including a support base 1 and a test platform 2 on top of it, a control center 6 is provided outside the support base 1, and an adjustment and positioning mechanism 4 is provided in the test platform 2 for positioning plastic gears 3 of different sizes and specifications to be tested. This design allows the device to flexibly adapt to the testing needs of plastic gears 3 of different sizes, improving the versatility and practicality of the test.

[0029] The adjusting positioning mechanism 4 includes multiple connecting plates 41 movably mounted outside the test bench 2. A positioning arc-shaped plate 42 is rotatably mounted outside the connecting plates 41 to position the inner hole of the plastic gear 3. Through the rotation and expansion of the positioning arc-shaped plate 42, stable clamping of the inner hole of the plastic gear 3 is achieved, ensuring accuracy during the testing process.

[0030] The test bench 2 is also equipped with an adjustment test mechanism 5 for fatigue testing of the plastic gear 3.

[0031] The adjustment test mechanism 5 includes a test gear 57 that can mesh with plastic gears 3 of different sizes for testing.

[0032] Furthermore, the adjusting positioning mechanism 4 also includes a mounting plate 43 disposed on the top of the test bench 2. A limiting frame 44 is provided on the top of the mounting plate 43, and the bottom end of the positioning arc plate 42 is slidably disposed in the limiting frame 44. This ensures the stability and guidance of the positioning arc plate 42 during the expansion and contraction process, further enhancing the stability and reliability of the fixation.

[0033] Furthermore, the adjustment and positioning mechanism 4 also includes a mounting frame 45 disposed in the test bench 2. An electric telescopic rod 46 is disposed in the mounting frame 45, and a first connecting post 47 is disposed at the output end of the electric telescopic rod 46. A sleeve 48 is disposed outside the first connecting post 47. The introduction of the electric telescopic rod 46 enables automated adjustment, improves operational efficiency, simplifies the operation process, shortens test preparation time, and maintains high-precision positioning capability.

[0034] Furthermore, multiple connecting plates 41 are arranged in pairs outside the sleeve 48. This improves the structural strength of the device and ensures stable support for the plastic gear 3 during testing.

[0035] Furthermore, the side of the connecting plate 41 closest to the sleeve 48 is rotatably mounted to the outside of the sleeve 48. This rotatable mounting method allows the connecting plate 41 to rotate flexibly outside the sleeve 48, adapting to the fixing requirements of plastic gears 3 of different sizes.

[0036] Furthermore, the mounting plate 43 has a connecting hole through which the first connecting post 47 passes, and the bottom end of the mounting plate 43 is movably connected to the mounting bracket 45. This ensures that the first connecting post 47 can smoothly pass through the mounting plate 43 while maintaining the stable support of the mounting plate 43.

[0037] Example 2: Please refer to Figure 7 Furthermore, in conjunction with Embodiment 1, the adjustment testing mechanism 5 further includes an adjusting screw 51 rotatably mounted in the testing platform 2. A handle 52 is provided on the outside of the adjusting screw 51. A movable plate 53 is threaded onto the external side of the adjusting screw 51. A mounting base 54 is provided at the bottom of the movable plate 53. A drive motor 55 is mounted in the mounting base 54. A second connecting post 56 is drivenly connected to the output shaft of the drive motor 55. The testing gear 57 is mounted outside the second connecting post 56. This design allows the position of the testing gear 57 to be easily adjusted via the adjusting screw 51 to accommodate plastic gears 3 of different sizes.

[0038] Furthermore, the movable plate 53 is slidably mounted in the test bench 2 on the side away from the adjusting screw 51. This sliding mounting method allows the movable plate 53 to move smoothly within the test bench 2, ensuring precise adjustment of the position of the test gear 57, enhancing the flexibility and accuracy of the test gear 57 position adjustment, and improving the reliability and efficiency of the test.

[0039] In actual operation, when it is necessary to conduct a fatigue resistance test on the plastic gear 3, the operation steps are as follows:

[0040] First, the inner hole of the plastic gear 3 to be tested is inserted through and placed outside the first connecting post 47. To ensure test stability, the electric telescopic rod 46 is opened, causing the first connecting post 47 to retract, which in turn moves the sleeve 48 and causes the connecting plate 41 to rotate. Under the action of the limiting frame 44, the positioning arc plate 42 slides within the limiting frame 44 and expands, thereby abutting against the inner hole of the plastic gear 3 and fixing its position.

[0041] Next, adjust the position of the test gear 57 according to the position of the external teeth of the plastic gear 3. Turn the handle 52 to rotate the adjusting screw 51 in the test platform 2. Since the movable plate 53 is slidably mounted in the test platform 2 on the side away from the adjusting screw 51, the rotation of the adjusting screw 51 will cause the movable plate 53 to move in the test platform 2, thereby changing the position of the test gear 57. After the test gear 57 engages with the plastic gear 3, stop turning the handle 52.

[0042] Then, the drive motor 55 is turned on, causing the second connecting column 56 to rotate, which in turn drives the test gear 57 to rotate, and in turn drives the plastic gear 3 that meshes with it to rotate, in order to conduct a fatigue test. The test data can be recorded through the control center 6.

[0043] After the test is completed, when the plastic gear 3 needs to be removed, the first connecting column 47 slides in the opposite direction by the reverse movement of the electric telescopic rod 46, the connecting plate 41 rotates in the opposite direction, the positioning arc plate 42 tightens, and the pressure on the inner hole of the plastic gear 3 is released, and then the plastic gear 3 can be removed.

[0044] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A fatigue testing device for plastic gears, used for testing plastic gears (3), comprising a support base (1) and a test platform (2) on top thereof, wherein a control center (6) is provided outside the support base (1), characterized in that: The test bench (2) is equipped with an adjustment and positioning mechanism (4) for positioning plastic gears (3) of different sizes and specifications to be tested; The adjustment and positioning mechanism (4) includes multiple connecting plates (41) movably disposed outside the test bench (2), and a positioning arc plate (42) for positioning the inner hole of the plastic gear (3) is rotatably disposed outside the connecting plate (41). The test bench (2) is also equipped with an adjustment test mechanism (5) for fatigue testing of plastic gears (3); The adjustment test mechanism (5) includes a test gear (57) that can mesh with plastic gears (3) of different sizes for testing.

2. The fatigue resistance testing device for plastic gears according to claim 1, characterized in that: The adjustment and positioning mechanism (4) also includes a mounting plate (43) set on the top of the test bench (2), a limiting frame (44) is set on the top of the mounting plate (43), and the bottom end of the positioning arc plate (42) is slidably set in the limiting frame (44).

3. The fatigue resistance testing device for plastic gears according to claim 1, characterized in that: The adjustment and positioning mechanism (4) further includes a mounting frame (45) set in the test bench (2), an electric telescopic rod (46) is provided in the mounting frame (45), a first connecting column (47) is provided at the output end of the electric telescopic rod (46), and a sleeve (48) is provided outside the first connecting column (47).

4. The fatigue resistance testing device for plastic gears according to claim 1, characterized in that: Multiple connecting plates (41) are arranged in pairs outside the sleeve (48).

5. The fatigue resistance testing device for plastic gears according to claim 3, characterized in that: The connecting plate (41) is rotatably mounted on the side of the sleeve (48) near the sleeve (48).

6. The fatigue resistance testing device for plastic gears according to claim 2, characterized in that: The mounting plate (43) has a connecting hole through which the first connecting post (47) passes, and the bottom end of the mounting plate (43) is movably connected to the mounting bracket (45).

7. The fatigue resistance testing device for plastic gears according to claim 1, characterized in that: The adjustment test mechanism (5) further includes an adjustment screw (51) rotatably disposed in the test bench (2), a handle (52) is provided on the outside of the adjustment screw (51), a movable plate (53) is threadedly connected to the outside of the adjustment screw (51), a mounting base (54) is provided at the bottom of the movable plate (53), a drive motor (55) is provided in the mounting base (54), a second connecting column (56) is drivenly connected to the output shaft of the drive motor (55), and the test gear (57) is disposed outside the second connecting column (56).

8. The fatigue resistance testing device for plastic gears according to claim 7, characterized in that: The movable plate (53) is slidably mounted in the test bench (2) on the side away from the adjusting screw (51).

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