Load test tool for hollow shaft harmonic speed reducer
By designing a hollow shaft harmonic reducer test tooling including bracket, motor, cross roller bearing, hollow shaft, flexible wheel and rigid wheel, the problems of low test accuracy and complex operation in the prior art are solved, and the problem of low test accuracy and complex operation is achieved. High-precision load testing and impact resistance detection improve the performance and life of the mechanical system.
Patent Information
- Application Number
- CN202421035869.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-13
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-05-13
AI Technical Summary
The existing hollow shaft harmonic reducer test tooling is complex, the test accuracy is not high, and the scope of application is limited. It cannot effectively detect the performance indicators of the reducer, which affects the performance and life of the mechanical system.
A test tool including bracket, motor, cross roller bearing, hollow shaft, flexible wheel, rigid wheel and load connection flange was designed. Through coaxial setting and tempering, high-precision rotation and load testing were achieved. Convenient installation and testing.
It realizes high-precision load testing of hollow shaft harmonic reducer, which can easily detect the load capacity and impact resistance of the reducer, saves installation space, and improves the coaxiality and rotation accuracy of the test.
Smart Images
Figure CN222280136U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of power transmission test fixtures, in particular to a hollow shaft harmonic reducer load test fixture. Background Art
[0002] The hollow shaft harmonic reducer is a reduction device widely used in the field of mechanical transmission. The hollow shaft 10 is a key component, which may be affected by various harmonic loads during operation. These harmonic loads may cause problems such as vibration, deformation and fatigue of the shaft, thereby affecting the performance and life of the mechanical system. Existing test fixtures often have problems such as complicated operation, low test accuracy and limited scope of application. In addition, the input end of the hollow shaft harmonic reducer is inconvenient to install, and the various performance indicators of the reducer cannot be detected. The performance and quality of the hollow shaft harmonic reducer have an important impact on the operating stability and reliability of mechanical equipment. Therefore, in the production process, load testing of the hollow shaft harmonic reducer is an indispensable link. Utility Model Content
[0003] In view of this, in order to overcome the deficiencies and defects in the background technology, an embodiment of the utility model provides a load testing tool for a whole hollow shaft harmonic reducer.
[0004] The embodiment of the utility model provides a hollow shaft harmonic reducer load test tool, comprising:
[0005] A bracket, wherein a motor connecting flange is fixed at the front end of the bracket, a driving motor is arranged at the rear end of the bracket, an output shaft of the driving motor extends forward to be fixed on the motor connecting flange, and a cross roller bearing is also fixed at the front end of the motor connecting flange;
[0006] A hollow shaft connected to the driving motor;
[0007] A flexible wheel, the rear end of which is fixed to the rear end of the cross roller bearing via a flexible wheel connecting flange, the flexible wheel connecting flange is sleeved on the rear end of the hollow shaft via a first bearing, the front end of which is sleeved on the hollow shaft via a flexible bearing and is located in the inner ring of the cross roller bearing;
[0008] A rigid wheel, the rigid wheel is sleeved on the outer side of the front end of the flexible wheel, and the rigid wheel is fixed to the front end of the cross roller bearing through a rigid wheel connecting flange, and the rigid wheel connecting flange is sleeved on the front end of the hollow shaft through a second bearing; and,
[0009] The load connecting flange is fixed at the front end of the rigid wheel connecting flange.
[0010] Furthermore, the motor connecting flange, the cross roller bearing, the hollow shaft, the flexible wheel, the flexible wheel connecting flange, the rigid wheel and the rigid wheel connecting flange are all coaxially arranged.
[0011] Furthermore, a fixing ring is convexly provided at the front end of the flexible wheel connecting flange, the first bearing is arranged between the hollow shaft and the fixing ring, and the rear end of the first bearing is also provided with an adjustment gasket and a wave spring piece in sequence, and the adjustment gasket and the wave spring piece are both loosely fitted and sleeved on the hollow shaft.
[0012] Furthermore, the motor connecting flange, the flexible wheel connecting flange, the rigid wheel connecting flange and the load connecting flange are all subjected to a quenching and tempering treatment.
[0013] Furthermore, an outer stop is convexly provided at the front end of the rigid wheel connection flange, an inner stop is concavely provided at the rear end of the load connection flange, and the outer stop is clamped on the inner stop.
[0014] Furthermore, the second bearing is a deep groove ball bearing.
[0015] Furthermore, the second bearing and the flexible bearing are interference fit with the hollow shaft.
[0016] Furthermore, the hollow shaft is connected to the output shaft of the driving motor via a motor adapter shaft.
[0017] Furthermore, the bracket and the motor connecting flange, the cross roller bearing and the motor connecting flange, the flexible wheel connecting flange and the cross roller bearing, and the cross roller bearing and the rigid wheel and the rigid wheel connecting flange are all fixedly connected by screws.
[0018] Furthermore, the screws are all coated with fastening glue.
[0019] The beneficial effects of the technical solution provided by the embodiment of the utility model are as follows: in the load test fixture of the hollow shaft harmonic reducer of the utility model, by connecting the load connection flange with the rigid wheel connection flange and the cross roller bearing set on the hollow shaft harmonic reducer, the rigid wheel of the hollow shaft harmonic reducer is connected to the cross roller bearing, the flexible wheel and the flexible wheel connection flange are also connected to the cross roller bearing, and the flexible wheel connection flange is connected to the motor connection flange, thereby achieving the coaxiality between the reducer and the test fixture, the cross roller bearing has good rotation accuracy, is easy to install, can withstand large axial and radial loads, can greatly save installation space, and make the reducer and the test fixture have high coaxiality. The test fixture has a reasonable structure, can realize the output torque of the rigid wheel of the hollow shaft harmonic reducer, and can conveniently test the load capacity and impact resistance of the reducer. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 The utility model is a schematic diagram of the structure of a hollow shaft harmonic reducer load test tool.
[0021] In the figure: 1. Flexwheel connecting flange; 2. Flexwheel; 3. Cross roller bearing; 4. Rigid wheel; 5. First sealing ring; 6. Rigid wheel connecting flange; 7. Flexible bearing; 8. Deep groove ball bearing; 9. Oil seal; 10. Hollow shaft; 11. First screw; 12. Adjusting gasket; 13. Wave spring; 14. Second sealing ring; 15. Second screw; 16. Motor adapter shaft; 17. Motor connecting flange; 18. Drive motor; 19. Bracket; 20. Load connecting flange. DETAILED DESCRIPTION
[0022] In order to make the purpose, technical solution and advantages of the present utility model clearer, the implementation mode of the present utility model will be further described below in conjunction with the accompanying drawings.
[0023] Please refer to Figure 1 As shown, an embodiment of the utility model provides a hollow shaft harmonic reducer load test fixture, including a bracket 19, a hollow shaft 10, a flexible wheel 2, a rigid wheel 4 and a load connection flange 20. A motor connection flange 17 is fixed to the front end of the bracket 19, and a drive motor 18 is provided at the rear end of the bracket 19, preferably a servo motor. The output shaft of the driving motor 18 extends forward to be fixed on the motor connecting flange 17, and a cross roller bearing 3 is also fixed to the front end of the motor connecting flange 17, and the bracket 19 is an L-shaped bracket 19; the hollow shaft 10 is connected to the driving motor 18; the rear end of the flexible wheel 2 is fixed to the rear end of the cross roller bearing 3 through the flexible wheel connecting flange 1, and the flexible wheel connecting flange 1 is sleeved on the rear end of the hollow shaft 10 through a first bearing, and the front end of the flexible wheel 2 is sleeved on the hollow shaft 10 through a flexible bearing 7, and is located in the inner ring of the cross roller bearing 3; the rigid wheel 4 is sleeved on the outer side of the front end of the flexible wheel 2, and the rigid wheel 4 is fixed to the front end of the cross roller bearing 3 through the rigid wheel connecting flange 6, and the rigid wheel connecting flange 6 is sleeved on the front end of the hollow shaft 10 through a second bearing, preferably, the second bearing is a deep groove ball bearing 8; the load connecting flange 20 is fixed to the front end of the rigid wheel connecting flange 6.
[0024] By connecting the load connection flange 20 with the rigid wheel connection flange 6 and the cross roller bearing 3 set on the hollow shaft harmonic reducer, the rigid wheel 4 of the hollow shaft harmonic reducer is connected to the cross roller bearing 3, the flexible wheel 2 and the flexible wheel connection flange 1 are also connected to the cross roller bearing 3, and the flexible wheel connection flange 1 is connected to the motor connection flange 17, so as to achieve the coaxiality between the reducer and the test fixture. The cross roller bearing 3 has good rotation accuracy, is easy to install, can withstand large axial and radial loads, can greatly save installation space, and make the reducer and the test fixture have high coaxiality. The test fixture has a reasonable structure, can realize the output torque of the rigid wheel 4 of the hollow shaft harmonic reducer, and can conveniently test the load capacity and impact resistance of the reducer.
[0025] Preferably, the motor connecting flange 17, the cross roller bearing 3, the hollow shaft 10, the flexible wheel 2, the flexible wheel connecting flange 1, the rigid wheel 4 and the rigid wheel connecting flange 6 are all coaxially arranged to ensure the coaxiality of the rigid wheel 4 and each flange, thereby achieving coaxiality between the reducer and the test fixture.
[0026] Specifically, a fixing ring is convexly provided at the front end of the flexible wheel connecting flange 1, the first bearing is arranged between the hollow shaft 10 and the fixing ring, and the rear end of the first bearing is also provided with an adjusting gasket 12 and a wave spring piece 13 in sequence, and the adjusting gasket 12 and the wave spring piece 13 are both sleeved on the hollow shaft 10 with a clearance fit.
[0027] The motor connection flange 17, the flexible wheel connection flange 1, the rigid wheel connection flange 6 and the load connection flange 20 may also be subjected to quenching and tempering treatment. The flanges have high wear resistance after quenching and tempering treatment and can be used to improve the torque bearing capacity of each flange.
[0028] Specifically, the front end of the rigid wheel connection flange 6 is convexly provided with an outer stopper, the rear end of the load connection flange 20 is concavely provided with an inner stopper, and the outer stopper is clamped on the inner stopper. The stopper is positioned and screwed, so the installation is convenient.
[0029] An oil seal 9 is also installed on the rigid wheel connection flange 6, and the oil seal 9 is arranged at the front end of the deep groove ball bearing 8. A first sealing ring 5 and a second sealing ring 14 are also arranged between the rigid wheel 4 and the rigid wheel connection flange 6, and between the flexible wheel 2 and the flexible wheel connection flange 1, respectively.
[0030] Specifically, the second bearing and the flexible bearing 7 are both interference fit with the hollow shaft 10 , and the hollow shaft 10 is connected to the output shaft of the drive motor 18 via the motor adapter shaft 16 , with clearance fit.
[0031] In the above structure, during installation, the flexible bearing 7 and the deep groove ball are first drawn and installed on the hollow shaft 10 with interference fit; then the wave spring piece 13 and the adjustment gasket 12 are installed on the hollow shaft 10 with clearance fit; then the hollow shaft 10 is inserted into the flexible wheel 2 and the flexible wheel connecting flange 1; the hollow shaft 10 is then connected to the motor connecting shaft, and the motor adapter shaft 16 is connected to the driving motor 18 with clearance fit. The motor connecting flange 17 is fixed to the cross roller bearing 3 and then connected to the flexible wheel 2, so that it has a higher coaxiality in the load test.
[0032] By using the convenient connection flange, installation is easier and the test run is smoother.
[0033] Specifically, the bracket 19 and the motor connecting flange 17, the cross roller bearing 3 and the motor connecting flange 17, the flexible wheel connecting flange 1 and the cross roller bearing 3, and the cross roller bearing 3 and the rigid wheel 4 and the rigid wheel connecting flange 6 are all fixedly connected by screws.
[0034] Reference Figure 1 As shown, the screws between the rigid wheel 4 and the rigid wheel connecting flange 6 are first screws 11, and the screws between the cross roller bearing 3 and the motor connecting flange 17, and between the flexible wheel connecting flange 1 and the cross roller bearing 3 are second screws 15. The screws are all coated with fastening glue, which makes the connection more secure and prevents loosening.
[0035] In the above structure, the test fixture can test the load and life of the reducer, and also test the reverse starting torque and vibration size of the reducer. The deep groove ball bearing 8 and the cross roller bearing 3 have good rotation accuracy, are easy to install, can withstand large axial and radial loads, and can greatly save installation space. The connection of the load connection flange 20 with the rigid wheel 4 and the cross roller bearing 3 will not affect the torque of the reducer.
[0036] In this document, the directional words such as front, back, top, and bottom are defined by the positions of the components in the drawings and the positions of the components relative to each other, and are only for the sake of clarity and convenience in expressing the technical solution. It should be understood that the use of the directional words should not limit the scope of protection claimed in this application.
[0037] In the absence of conflict, the above embodiments and features in the embodiments may be combined with each other.
[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A hollow shaft harmonic reducer load test tool, characterized in that: include: A bracket, wherein a motor connecting flange is fixed at the front end of the bracket, a driving motor is arranged at the rear end of the bracket, an output shaft of the driving motor extends forward to be fixed on the motor connecting flange, and a cross roller bearing is also fixed at the front end of the motor connecting flange; A hollow shaft connected to the driving motor; A flexible wheel, the rear end of which is fixed to the rear end of the cross roller bearing via a flexible wheel connecting flange, the flexible wheel connecting flange is sleeved on the rear end of the hollow shaft via a first bearing, the front end of which is sleeved on the hollow shaft via a flexible bearing and is located in the inner ring of the cross roller bearing; A rigid wheel, the rigid wheel is sleeved on the outer side of the front end of the flexible wheel, and the rigid wheel is fixed to the front end of the cross roller bearing through a rigid wheel connecting flange, and the rigid wheel connecting flange is sleeved on the front end of the hollow shaft through a second bearing; and, The load connecting flange is fixed at the front end of the rigid wheel connecting flange.
2. The hollow shaft harmonic reducer load test tool as claimed in claim 1, characterized in that: The motor connecting flange, the cross roller bearing, the hollow shaft, the flexible wheel, the flexible wheel connecting flange, the rigid wheel and the rigid wheel connecting flange are all coaxially arranged.
3. The hollow shaft harmonic reducer load test tool as claimed in claim 1, characterized in that: A fixing ring is convexly provided at the front end of the flexible wheel connecting flange, the first bearing is arranged between the hollow shaft and the fixing ring, and the rear end of the first bearing is also provided with an adjustment gasket and a wave spring piece in sequence, and the adjustment gasket and the wave spring piece are both sleeved on the hollow shaft with a clearance fit.
4. The hollow shaft harmonic reducer load test tool as claimed in claim 1, characterized in that: The motor connecting flange, the flexible wheel connecting flange, the rigid wheel connecting flange and the load connecting flange are all subjected to quenching and tempering treatment.
5. The hollow shaft harmonic reducer load test tool as claimed in claim 1, characterized in that: An outer stop is convexly arranged at the front end of the rigid wheel connection flange, and an inner stop is concavely arranged at the rear end of the load connection flange. The outer stop is clamped on the inner stop.
6. The hollow shaft harmonic reducer load test tool as claimed in claim 1, characterized in that: The second bearing is a deep groove ball bearing.
7. The hollow shaft harmonic reducer load test tool as claimed in claim 1, characterized in that: The second bearing and the flexible bearing are both interference fit with the hollow shaft.
8. The hollow shaft harmonic reducer load test tool as claimed in claim 1, characterized in that: The hollow shaft is connected to the output shaft of the driving motor via a motor adapter shaft.
9. The hollow shaft harmonic reducer load test tool as claimed in claim 1, characterized in that: The bracket and the motor connecting flange, the cross roller bearing and the motor connecting flange, the flexible wheel connecting flange and the cross roller bearing, the cross roller bearing and the rigid wheel and the rigid wheel connecting flange are all fixedly connected by screws.
10. The hollow shaft harmonic reducer load test tool as claimed in claim 9, characterized in that: The screws are all coated with fastening glue.