CN113176091A - Fatigue life test bench for speed reducer - Google Patents
Fatigue life test bench for speed reducer Download PDFInfo
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- CN113176091A CN113176091A CN202110638030.5A CN202110638030A CN113176091A CN 113176091 A CN113176091 A CN 113176091A CN 202110638030 A CN202110638030 A CN 202110638030A CN 113176091 A CN113176091 A CN 113176091A
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- speed reducer
- tested
- inertia disc
- hole
- motor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
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- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a fatigue life test bench for a speed reducer, which comprises a base, a motor, a mounting shaft, an inertia disc and the speed reducer to be tested, wherein the speed reducer to be tested is arranged in a first through hole through a second through hole, and is connected with the inertia disc through the second adapter flange, only the second adapter flange needs to be disassembled and assembled when the inertia disc is disassembled and assembled, the inertia disc does not need to be disassembled and assembled, the operation is simple, the installation is convenient, the time for disassembling and assembling the inertia disc is saved, the working efficiency is improved, in addition, in the invention, the reducer to be tested is driven to drive the inertia disc to rotate around the mounting shaft by taking the bearing as a fulcrum along with the work of the motor, the actual working condition is simulated by changing the rotating speed curve of the motor, the weight of the inertia disc and the weight of the second adapter flange are borne by the bearing, the generated bending moment is also borne by the bearing, the reducer to be tested does not bear the bending moment generated by the inertia disc, and the problem that the output end of the reducer to be tested bears the overlarge bending moment is solved.
Description
Technical Field
The invention relates to the technical field of speed reducer test tables, in particular to a fatigue life test table for a speed reducer.
Background
The service life of the speed reducer is a key application index of the speed reducer, the current fatigue life test bench of the speed reducer usually uses an inertia disc to simulate the actual working condition of the speed reducer for loading, the inertia disc is connected with the output end of the tested speed reducer, the inertia disc is supported by the speed reducer, the speed reducer bears the bending moment generated by the weight of the inertia disc, and the bending moment borne by the speed reducer is larger due to the larger weight of the inertia disc; in addition, in the testing process, the speed reducer needs to be disassembled and assembled many times, the inertia disc needs to be disassembled and assembled every time, the inertia disc is heavy and high in matching precision with the speed reducer, the assembly and the disassembly are difficult, the assembly process is complex and time-consuming, and therefore the problem is solved by the speed reducer fatigue life testing table in urgent need.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provides a fatigue life test bench for a speed reducer.
In order to achieve the purpose, the invention provides the following technical scheme: a fatigue life test stand for a speed reducer, comprising:
the base is provided with a first through hole;
the motor is arranged on the base, and the output end of the motor is coaxial with the first through hole and is positioned in the through hole;
the mounting shaft is mounted on the base and is coaxial with the first through hole, and a second through hole is formed in the mounting shaft in the axial direction;
the center of the inertia disc is provided with a bearing and the inertia disc is arranged on the installation shaft through the bearing;
and the speed reducer to be tested is arranged in the first through hole through the second through hole, wherein the input shaft of the speed reducer to be tested is connected with the output end of the motor, the output end of the speed reducer to be tested is connected with the inertia disc, and the speed reducer to be tested is driven to drive the inertia disc to rotate around the mounting shaft by taking the bearing as a fulcrum along with the work of the motor.
Preferably, the base comprises a base and a support installed on the base, the first through hole is formed in the support, and the support is provided with a supporting plate.
Preferably, a first adapter flange is installed in the first through hole, the first adapter flange is hollow inside and forms a cavity, and the speed reducer to be tested is installed in the cavity.
Preferably, a sealing ring is installed at the connection position of the cavity of the first adapter flange and the adapter of the speed reducer to be tested.
Preferably, the output end of the motor is provided with a switching shaft sleeve, the input shaft of the speed reducer to be tested is arranged in the switching shaft sleeve, and a hydraulic tensioning sleeve is arranged between the input shaft of the speed reducer to be tested and the switching shaft sleeve.
Preferably, the output end of the speed reducer to be tested is provided with a second adapter flange and is connected with the inertia disc through the second adapter flange.
Preferably, the bearing is a rolling bearing, wherein the mounting shaft and the second adapter flange respectively compress the inner ring and the outer ring of the rolling bearing, so that the axial positioning of the rolling bearing is realized.
Compared with the prior art, the invention has the beneficial effects that: in the invention, the speed reducer to be tested is arranged in the first through hole through the second through hole and is connected with the inertia disc through the second adapter flange, only the second adapter flange needs to be disassembled and assembled when the speed reducer to be tested is disassembled and assembled, the inertia disc does not need to be disassembled and assembled, the operation is simple, the installation is convenient, the time for disassembling and assembling the inertia disc is saved, the working efficiency is improved, in addition, the speed reducer to be tested is driven to drive the inertia disc to rotate around the installation shaft by taking the bearing as a fulcrum along with the work of the motor, the actual working condition is simulated by changing the rotating speed curve of the motor, wherein the weight of the inertia disc and the second adapter flange is born by the bearing, the generated bending moment is also born by the bearing, the speed reducer to be tested does not bear the bending moment generated by the inertia disc, and the problem that the output end of the speed reducer to be tested bears the excessive bending moment is solved.
Drawings
FIG. 1 is a schematic view of a testing platform according to the present invention;
FIG. 2 is a schematic view of another embodiment of the testing platform of the present invention;
FIG. 3 is a cross-sectional view of a test station according to the present invention;
reference numbers in the figures: 1. a base; 2. a support; 3. a motor; 4. a switching shaft sleeve; 5. a seal ring; 6. a first adaptor flange; 7. a hydraulic tensioning sleeve; 8. the input shaft of the speed reducer to be tested; 9. an inertia disc; 10. a bearing; 11. installing a shaft; 12. a speed reducer to be tested; 13. a second adaptor flange; 14. and a support plate.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Example (b): as shown in fig. 1-3, a fatigue life test bench for a speed reducer comprises a base, a motor 3, a mounting shaft 11, an inertia disc 9 and a speed reducer 12 to be tested; a first through hole is formed in the base, the motor 3 is installed on the base, and the output end of the motor 3 is coaxial with and located in the first through hole; the mounting shaft 11 is mounted on the base and is coaxially arranged with the first through hole, wherein a second through hole is formed in the axis direction of the mounting shaft 11 and can be used as a sealing protection shell for measuring the speed reducer 12 to be measured in the circumferential direction; the center of the inertia disc 9 is provided with a bearing 10 and is arranged on a mounting shaft 11 through the bearing 10; the speed reducer 12 to be tested is arranged in the first through hole through the second through hole, wherein the input shaft 8 of the speed reducer to be tested is connected with the output end of the motor 3, the output end of the speed reducer 12 to be tested is connected with the inertia disc 9, and the speed reducer 12 to be tested is driven to drive the inertia disc 9 to rotate around the installation shaft 11 by taking the bearing 10 as a fulcrum along with the work of the motor 3.
As shown in fig. 1-2, the base includes a base 1 and a bracket 2 mounted on the base 1, the first through hole is formed in the bracket 2, and the bracket 2 is provided with a plurality of support plates 14, so that the support stability of the bracket 2 can be effectively improved, the support for the output end of the reducer 12 to be tested can be satisfied, and the influence of the deformation of the bracket 2 on the test result can be reduced;
referring to fig. 3, a first adapter flange 6 is installed in a first through hole of a bracket 2, the first adapter flange 6 is hollow and forms a cavity, and a speed reducer 12 to be tested is installed in the cavity, wherein a sealing ring 5 is installed at a connection position where the cavity of the first adapter flange 6 is connected with the speed reducer 12 to be tested, so that foreign matters can be effectively prevented from entering the speed reducer 12 to be tested, the fatigue life test result of the speed reducer 12 to be tested is influenced, and meanwhile, lubricating oil leakage of the speed reducer 12 to be tested can be prevented.
Referring to fig. 3, a switching shaft sleeve 4 is arranged at the output end of a motor 3, an input end of a speed reducer 12 to be tested is arranged in the switching shaft sleeve 4, a hydraulic tensioning sleeve 7 is arranged between the input end of the speed reducer 12 to be tested and the switching shaft sleeve 4, the switching shaft sleeve 4 can realize connection between the output end of the motor 3 and an input end 8 of the speed reducer 12 to be tested, the hydraulic tensioning sleeve 7 can conveniently and quickly ensure stable connection between the input end 8 of the speed reducer 12 to be tested and the output end of the motor 3, and the concentricity tolerance requirement of the input end 8 of the speed reducer 12 to be tested can be ensured.
Referring to fig. 1 or 3, a second adapter flange 13 is installed at an output end of the speed reducer 12 to be tested, and is connected to the inertia disc 9 through the second adapter flange 13, wherein the second adapter flange 13 may be provided with output ends adapted to a plurality of speed reducer models to connect with mechanical interfaces, so as to achieve universality, and may also be a disc type torque meter to directly obtain output torque; in addition, the bearing 10 is a rolling bearing, wherein the mounting shaft 11 and the second adapter flange 13 respectively press the inner ring and the outer ring of the rolling bearing to axially position the rolling bearing, so that the rolling bearing is prevented from axial movement in the operation process.
During operation, will await measuring reduction gear 12 and install according to the above-mentioned, starting motor 3 drives reduction gear input shaft 8 that awaits measuring through motor 3 and rotates for the output of reduction gear 12 that awaits measuring rotates, drives inertia dish 9 through second adaptor flange 13 and rotates, simulates operating condition through the rotational speed curve that changes motor 3, realizes the test to the reduction gear 12 fatigue life that awaits measuring. When the inertia disc 9 rotates, the weight of the inertia disc and the weight of the second adapter flange 13 are borne by the bearing 10, the generated bending moment is borne by the bearing 10, the reducer 12 to be tested does not bear the bending moment generated by the inertia disc 9, and the problem that the output end of the reducer 12 to be tested bears the overlarge bending moment is solved.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a reduction gear fatigue life testboard which characterized in that includes:
the base is provided with a first through hole;
the motor is arranged on the base, and the output end of the motor is coaxial with the first through hole and is positioned in the through hole;
the mounting shaft is mounted on the base and is coaxial with the first through hole, and a second through hole is formed in the mounting shaft along the axis direction;
the center of the inertia disc is provided with a bearing and the inertia disc is arranged on the installation shaft through the bearing;
and the speed reducer to be tested is arranged in the first through hole through the second through hole, wherein the input shaft of the speed reducer to be tested is connected with the output end of the motor, the output end of the speed reducer to be tested is connected with the inertia disc, and the speed reducer to be tested is driven to drive the inertia disc to rotate around the mounting shaft by taking the bearing as a fulcrum along with the work of the motor.
2. The fatigue life test bench for the speed reducer according to claim 1, wherein: the base comprises a base and a support arranged on the base, a first through hole is formed in the support, and a supporting plate is arranged on the support.
3. A fatigue life test bench for speed reducer according to claim 1 or 2, characterized in that: a first adapter flange is installed in the first through hole, the first adapter flange is hollow inside and forms a cavity, and a speed reducer to be tested is installed in the cavity.
4. A fatigue life test bench for speed reducer according to claim 3, characterized in that: and a sealing ring is arranged at the connection part of the cavity of the first adapter flange and the adapter of the speed reducer to be tested.
5. The fatigue life test bench for the speed reducer according to claim 1, wherein: the output end of the motor is provided with a switching shaft sleeve, the input shaft of the speed reducer to be tested is arranged in the switching shaft sleeve, and a hydraulic tensioning sleeve is arranged between the input shaft of the speed reducer to be tested and the switching shaft sleeve.
6. The fatigue life test bench for the speed reducer according to claim 1, wherein: and the output end of the speed reducer to be tested is provided with a second adapter flange and is connected with the inertia disc through the second adapter flange.
7. The fatigue life test bench for the speed reducer according to claim 6, wherein: the bearing is a rolling bearing, wherein the mounting shaft and the second adapter flange respectively press the inner ring and the outer ring of the rolling bearing, so that the axial positioning of the rolling bearing is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110638030.5A CN113176091A (en) | 2021-06-08 | 2021-06-08 | Fatigue life test bench for speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110638030.5A CN113176091A (en) | 2021-06-08 | 2021-06-08 | Fatigue life test bench for speed reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113176091A true CN113176091A (en) | 2021-07-27 |
Family
ID=76927648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110638030.5A Pending CN113176091A (en) | 2021-06-08 | 2021-06-08 | Fatigue life test bench for speed reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113176091A (en) |
-
2021
- 2021-06-08 CN CN202110638030.5A patent/CN113176091A/en active Pending
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