CN223841465U - A fatigue resistance testing device for plastic gears - Google Patents

Abstract

The utility model discloses a fatigue resistance testing device for a plastic gear, which is used for testing the plastic gear and comprises a supporting seat and a testing table at the top of the supporting seat, the supporting seat is provided with a control center, and the test bench is provided with an adjusting and positioning mechanism for positioning plastic gears with different sizes to be tested. The plastic gear fatigue resistance testing device realizes the stable abutting fixation of the inner hole of the plastic gear through the cooperation of the electric telescopic rod and the first connecting column. Meanwhile, due to the sliding expansion design of the positioning arc plate in the limiting frame, the fixing firmness is enhanced, the inner hole requirements of plastic gears with different sizes are met, and the universality and the flexibility of the device are improved. In addition, through rotating the handle adjusting screw, can easily change the position of test gear, make its and plastic gear meshing, further promoted the accuracy and the efficiency of test.

Description

Fatigue resistance testing device for plastic gear

Technical Field

The utility model relates to the technical field of plastic gear testing devices, in particular to a plastic gear fatigue resistance testing device.

Background

With the wide application of plastic gears in mechanical equipment, the requirements on durability and reliability of the plastic gears are increasingly increased, and in order to meet the requirements, a fatigue resistance testing device for plastic gears is often used in the production of the plastic gears so as to simulate the gear operation under actual working conditions and evaluate the fatigue resistance performance of the plastic gears.

For example, chinese patent (issued to the public number CN 218847627U) discloses a fatigue resistance testing device for a plastic gear, the existing device drives a mounting rod to rotate through a rotary driver, drives another mounting rod to rotate through gear engagement, and two mounting rods drive two first gears to translate to two sides, thereby pulling a connecting belt, thereby driving a second gear to move to a slot direction, and thus completing the fatigue resistance test for the plastic gear. However, the existing device drives the mounting rod to rotate through the rotary driver, and drives the other mounting rod to rotate by means of gear engagement, so that two first gears translate to two sides. Because of the limited adaptability of this mechanical linkage to gears of different sizes, precise mechanical design and adjustment is required and the adjustment process is relatively cumbersome. Particularly when the gear size varies greatly, it may be necessary to replace the mounting bar or gear of a different size, which increases the complexity and cost of the test preparation. In addition, if the connecting belt is loosened, worn or broken in the test process, the fixing mechanism can be unstable, and the fatigue resistance test result of the plastic gear is further affected.

Disclosure of utility model

The utility model aims to provide a fatigue resistance testing device for plastic gears, which effectively improves the adaptability adjustment capability, the testing accuracy and reliability and the flexibility of the position adjustment of the tested gears for plastic gears with different sizes by introducing designs such as an adjusting and positioning mechanism, an adjusting and testing mechanism and the like.

The technical scheme is that the fatigue resistance testing device for the plastic gear comprises a supporting seat and a testing table arranged at the top of the supporting seat, wherein a control center is arranged outside the supporting seat, and an adjusting and positioning mechanism for positioning the plastic gears with different sizes to be tested is arranged in the testing table.

The adjusting and positioning mechanism comprises a plurality of connecting plates movably arranged outside the test board, and positioning arc plates for positioning the inner holes of the plastic gears are rotatably arranged outside the connecting plates.

And an adjusting and testing mechanism for performing fatigue resistance test on the plastic gear is further arranged in the test bench.

The adjustment test mechanism includes a test gear that can be engaged with plastic gears of different sizes to perform a test.

Preferably, the adjusting and positioning mechanism further comprises a mounting plate arranged at the top of the test bench, a limiting frame is arranged at the top of the mounting plate, and the bottom end of the positioning arc plate is slidably arranged in the limiting frame.

Preferably, the adjusting and positioning mechanism further comprises a mounting frame arranged in the test bench, an electric telescopic rod is arranged in the mounting frame, a first connecting column is arranged at the output end of the electric telescopic rod, and a sleeve is arranged outside the first connecting column.

Preferably, a plurality of the connection plates are arranged outside the sleeve in pairs.

Preferably, one side of the connecting plate, which is close to the sleeve, is rotatably arranged outside the sleeve.

Preferably, the mounting plate is provided with a connecting hole for the first connecting column to penetrate through, and the bottom end of the mounting plate is movably connected with the mounting frame.

Preferably, the adjusting and testing mechanism further comprises an adjusting screw rod which is rotatably arranged in the test table, a handle is arranged outside the adjusting screw rod, a movable plate is connected with the adjusting screw rod through external threads, an installation seat is arranged at the bottom of the movable plate, a driving motor is arranged in the installation seat, a second connecting column is connected to an output shaft of the driving motor in a transmission manner, and the testing gear is arranged outside the second connecting column.

Preferably, the movable plate is slidably mounted in the test bench at a side far away from the adjusting screw.

Compared with the prior art, the utility model provides a plastic gear fatigue resistance testing device, which has the following beneficial effects:

1. The plastic gear fatigue resistance testing device realizes the stable abutting fixation of the inner hole of the plastic gear through the cooperation of the electric telescopic rod and the first connecting column. Meanwhile, due to the sliding expansion design of the positioning arc plate in the limiting frame, the fixing firmness is enhanced, the inner hole requirements of plastic gears with different sizes are met, and the universality and the flexibility of the device are improved. In addition, through rotating the handle adjusting screw, can easily change the position of test gear, make its and plastic gear meshing, further promoted the accuracy and the efficiency of test.

2. The plastic gear fatigue resistance testing device is smooth in the whole testing process and easy to control from the fixing of the plastic gear and the position adjustment of the testing gear to the starting and data recording of the driving motor, simplifies the fatigue resistance testing process of the plastic gear, and is simple, convenient and quick to operate. In addition, after the test is finished, the fixing of the plastic gear can be easily released through the reverse movement of the electric telescopic rod, the tested plastic gear can be conveniently and quickly replaced, and the test efficiency and the utilization rate of equipment are further improved.

Drawings

Fig. 1 is a schematic perspective view of a plastic gear fatigue resistance testing device according to the present utility model.

Fig. 2 is a schematic diagram of a three-dimensional structure of a plastic gear fatigue resistance testing device according to the present utility model.

Fig. 3 is a schematic diagram of a partial three-dimensional structure of an adjusting and positioning mechanism in the fatigue resistance testing device for the plastic gear.

Fig. 4 is a schematic diagram of a partial three-dimensional structure of an adjusting and positioning mechanism in the fatigue resistance testing device for the plastic gear.

Fig. 5 is a schematic diagram showing a three-dimensional structure of an adjusting and positioning mechanism in the fatigue resistance testing device for plastic gears.

Fig. 6 is a schematic diagram showing a three-dimensional structure of an adjusting and positioning mechanism in the fatigue resistance testing device for the plastic gear.

Fig. 7 is a schematic perspective view of an adjusting and testing mechanism in the plastic gear fatigue resistance testing device.

The device comprises a supporting seat, a testing table, a plastic gear, a regulating and positioning mechanism, a connecting plate, a positioning arc plate, a mounting plate, a limiting frame, a mounting frame, an electric telescopic rod, a first connecting column, a sleeve, a regulating and testing mechanism, a regulating screw rod, a handle, a movable plate, a mounting seat, a driving motor, a second connecting column, a testing gear, a control center and a control center, wherein the regulating and positioning mechanism comprises the components of the supporting seat, the testing table, the plastic gear, the regulating and positioning mechanism, the regulating and positioning arc plate, the mounting plate, the positioning arc plate, the mounting frame, the electric telescopic rod, the regulating and testing mechanism, the regulating and positioning arc plate, the regulating and positioning arc-shaped frame and the electric telescopic rod, the regulating and the control center.

Detailed Description

The utility model will be further described in detail with reference to the drawings and the detailed description below, in order to further understand the features and technical means of the utility model and the specific objects and functions achieved.

Referring to fig. 1-7, the utility model provides a technical scheme of a plastic gear fatigue resistance testing device, which is used for testing a plastic gear 3, and comprises a supporting seat 1 and a testing table 2 at the top of the supporting seat, wherein a control center 6 is arranged outside the supporting seat 1, and an adjusting and positioning mechanism 4 for positioning the plastic gears 3 with different sizes to be tested is arranged in the testing table 2. The design enables the device to flexibly adapt to the testing requirements of the plastic gears 3 with different sizes, and improves the universality and practicality of the testing.

The adjusting and positioning mechanism 4 comprises a plurality of connecting plates 41 movably arranged outside the test bench 2, and positioning arc plates 42 for positioning the inner holes of the plastic gears 3 are rotatably arranged outside the connecting plates 41. By means of rotation and expansion of the positioning arc-shaped plate 42, stable clamping of the inner hole of the plastic gear 3 is achieved, and accuracy in the testing process is guaranteed.

The test bench 2 is also provided with an adjusting and testing mechanism 5 for performing fatigue resistance test on the plastic gear 3.

The adjustment test mechanism 5 includes a test gear 57 that can be engaged with different sized plastic gears 3 for testing.

Further, the adjusting and positioning mechanism 4 further comprises a mounting plate 43 arranged at the top of the test bench 2, a limiting frame 44 is arranged at the top of the mounting plate 43, and the bottom end of the positioning arc plate 42 is slidably arranged in the limiting frame 44. The stability and guidance of the positioning arc plate 42 during the expansion and contraction are ensured, and the stability and reliability of fixation are further enhanced.

Further, the adjusting and positioning mechanism 4 further comprises a mounting frame 45 arranged in the test bench 2, an electric telescopic rod 46 is arranged in the mounting frame 45, a first connecting column 47 is arranged at the output end of the electric telescopic rod 46, and a sleeve 48 is arranged outside the first connecting column 47. The introduction of the electric telescopic rod 46 achieves automatic adjustment, improves the operation efficiency, simplifies the operation flow, shortens the test preparation time, and simultaneously maintains the positioning capability with high precision.

Further, a plurality of connection plates 41 are provided outside the sleeve 48 in pairs. The structural strength of the device is improved, and the stable support of the plastic gear 3 in the testing process is ensured.

Further, the side of the connection plate 41 adjacent to the sleeve 48 is rotatably mounted to the outside of the sleeve 48. This rotational mounting allows the connection plate 41 to flexibly rotate outside the sleeve 48, accommodating the fixed requirements of different sizes of plastic gears 3.

Further, a connecting hole for the first connecting post 47 to penetrate is formed in the mounting plate 43, and the bottom end of the mounting plate 43 is movably connected with the mounting frame 45. It is ensured that the first connection post 47 can smoothly pass through the mounting plate 43 while maintaining stable support of the mounting plate 43.

Referring to fig. 7, in combination with the first embodiment, the adjusting and testing mechanism 5 further includes an adjusting screw 51 rotatably disposed in the test stand 2, a handle 52 is disposed outside the adjusting screw 51, a movable plate 53 is connected to the adjusting screw 51 through an external thread, a mounting seat 54 is disposed at the bottom of the movable plate 53, a driving motor 55 is disposed in the mounting seat 54, a second connecting post 56 is connected to an output shaft of the driving motor 55 through transmission, and a testing gear 57 is disposed outside the second connecting post 56. This design allows the position of the test gear 57 to be easily adjusted by adjusting the screw 51 to accommodate different sizes of plastic gears 3.

Further, a movable plate 53 is slidably mounted in the test stand 2 at a side away from the adjusting screw 51. This sliding mounting allows the movable plate 53 to move smoothly in the test stand 2, ensures accurate adjustment of the position of the test gear 57, enhances flexibility and accuracy of the adjustment of the position of the test gear 57, and improves reliability and efficiency of the test.

In the actual operation process, when the fatigue resistance test is required for the plastic gear 3, the operation steps are as follows:

First, the inner hole of the plastic gear 3 to be tested is placed through to the outside of the first connecting post 47. To ensure test stability, the electric telescopic rod 46 is opened, the first connecting post 47 is contracted, the sleeve 48 is driven to move, and the connecting plate 41 is rotated. Under the action of the limiting frame 44, the positioning arc plate 42 slides in the limiting frame 44 and is in an expanded state, so that the inner hole of the plastic gear 3 is abutted tightly, and the position of the plastic gear is fixed.

Next, the position of the test gear 57 is adjusted according to the position of the external teeth of the plastic gear 3. The knob 52 is turned to rotate the adjusting screw 51 in the test stand 2. Since the movable plate 53 is slidably mounted in the test stand 2 on the side away from the adjustment screw 51, rotation of the adjustment screw 51 moves the movable plate 53 in the test stand 2, thereby changing the position of the test gear 57. After the test gear 57 is engaged with the plastic gear 3, the rotation of the handle 52 is stopped.

Then, the driving motor 55 is turned on to rotate the second connecting post 56, so as to drive the test gear 57 to rotate, and further drive the plastic gear 3 meshed with the test gear to rotate, so that fatigue resistance test is performed. The test data may be recorded by the control center 6.

After the test is finished, when the plastic gear 3 needs to be removed, the first connecting post 47 is reversely slid by the reverse movement of the electric telescopic rod 46, the connecting plate 41 reversely rotates, the positioning arc plate 42 is tightened, the abutting of the inner hole of the plastic gear 3 is relieved, and then the plastic gear 3 can be removed.

The foregoing examples merely illustrate one or more embodiments of the utility model, which are described in greater detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of the utility model should be assessed as that of the appended claims.

Claims (8)

1. A fatigue testing device for plastic gears, used for testing plastic gears (3), including a support base (1) and a test platform (2) on top of it, wherein a control center (6) is provided outside the support base (1), characterized in that: the test platform (2) is provided 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) further includes a mounting plate (43) disposed on the top of the test bench (2), the top of the mounting plate (43) is provided with a limiting frame (44), and the bottom end of the positioning arc plate (42) is slidably disposed 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) disposed in the test bench (2), an electric telescopic rod (46) is disposed in the mounting frame (45), a first connecting column (47) is disposed at the output end of the electric telescopic rod (46), and a sleeve (48) is disposed outside the first connecting column (47). 4. The fatigue resistance testing device for plastic gears according to claim 1, characterized in that: a plurality of 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 installed 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) is provided with a connecting hole for the first connecting post (47) to pass through, and the bottom end of the mounting plate (43) is movably connected to the mounting frame (45). 7. A fatigue testing device for plastic gears according to claim 1, characterized in that: the adjusting testing mechanism (5) further includes an adjusting screw (51) rotatably disposed in the testing table (2), a handle (52) is provided outside the adjusting screw (51), a movable plate (53) is threadedly connected to the adjusting 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 testing 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 installed in the test bench (2) on the side away from the adjusting screw (51).