CN216746784U - Loading device of flexible bearing test bed for harmonic reducer - Google Patents
Loading device of flexible bearing test bed for harmonic reducer Download PDFInfo
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- CN216746784U CN216746784U CN202220174630.0U CN202220174630U CN216746784U CN 216746784 U CN216746784 U CN 216746784U CN 202220174630 U CN202220174630 U CN 202220174630U CN 216746784 U CN216746784 U CN 216746784U
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Abstract
The utility model relates to a loading device of a flexible bearing test bed for a harmonic reducer, and belongs to the technical field of testing of flexible bearings for harmonic reducers. The device comprises a bidirectional hydraulic cylinder, a main body frame, a driving rod, a transition sliding block, a loading seat, a pressure sensor, a spring seat, a spring fixing rod, a supporting seat, a spring, a compression block, a compression rod, a loading block and a buffer sliding block; when the driving rod is subjected to the telescopic motion of the bidirectional hydraulic cylinder, the driving rod moves up and down along the vertical direction, and the transition sliding blocks at the left end and the right end of the driving rod move left and right under the action of the driving rod. The device can simulate the loading condition of the flexible bearing in the working process of the harmonic reducer, and the load is kept unchanged in the process of testing the performance of the flexible bearing; the load of the flexible bearings with various sizes can be applied by adjusting the telescopic length of the push-pull rod of the bidirectional hydraulic cylinder.
Description
Technical Field
The utility model relates to a loading device of a flexible bearing test bed for a harmonic reducer, and belongs to the technical field of testing of flexible bearings for harmonic reducers.
Background
The harmonic reducer has been invented for more than 50 years, and is widely applied to the fields of satellites, rockets, robots and the like at present by virtue of the characteristics of high transmission ratio, high transmission precision, high transmission stability and the likeResearch for this technology is very important in many developed countries, both abroad and abroad[3]. Through the development of half a century, the research on harmonic transmission technology in the three countries of the united states, the japanese and the russia is at the world leading level. The harmonic gear transmission technology is researched in 1961 in China, and nowadays, a plurality of scientific research units such as Beijing harmonic transmission technology research institute, Beijing Zhongzhimei LLC company, Harbin industry university and the like are engaged in the research and production of the technology, so that a solid foundation is laid for the development of the harmonic transmission technology in China.
The harmonic reducer is composed of a wave generator (flexible bearing and cam), a flexible gear and a steel gear, wherein the flexible bearing is used as a main component, the flexible bearing is different from a common bearing, the wall thickness of an inner ring and an outer ring of the flexible bearing is very thin, the flexible bearing is easy to generate elastic deformation after the cam is installed in the flexible bearing, the flexible bearing is forced to deform into an ellipse after the cam is installed in an elliptical wave generator, the flexible gear installed on the outer ring of the flexible bearing also changes into an elliptical shape, the flexible gear and the steel gear are in a meshing state at a long shaft of the wave generator and are in a disengagement state at a short shaft of the wave generator, a transition position from the long shaft to the short shaft is in a gear-in and gear-out state, and a meshing area of gear teeth of the flexible gear and the steel gear is about 60 degrees.
At present, the technical problems of the harmonic reducer in domestic research include low precision, low transmission efficiency, short service life, small bearing capacity and the like, the structure size is required to be simplified, the performance level of the harmonic reducer is further improved, the performance of a flexible bearing is an essential important content in deep research, the conventional bearing performance detection test bed takes a common bearing as a test object, the inner ring and the outer ring of the bearing are always kept circular when the bearing works, the working state of the flexible bearing is that a cam is arranged on the inner ring, a flexible wheel is arranged on the outer ring, and a meshing area is a loaded area. At present, no good performance testing machine exists for the flexible bearing in a working state in a harmonic reducer.
Disclosure of Invention
The technical problem to be solved by the technical scheme of the utility model is to provide a loading device of a flexible bearing testing machine for a harmonic reducer, which can solve the problem that a common bearing testing machine cannot meet the loading requirement of a flexible bearing in a working state.
The technical scheme adopted by the utility model is as follows: a loading device of a flexible bearing test bed for a harmonic reducer comprises a bidirectional hydraulic cylinder 1, a main body frame 2, a driving rod 3, a transition sliding block 4, a loading seat 5, a pressure sensor 6, a spring seat 7, a spring fixing rod 8, a supporting seat 9, a spring 10, a compression block 11, a compression rod 12, a loading rod 13, a loading block 14 and a buffer sliding block 15;
the main body frame 2 is fixedly connected with a supporting seat 9, a bidirectional hydraulic cylinder 1 is arranged above the main body frame 2, the left side and the right side of the main body frame are provided with slideways for a transition sliding block 4 to slide, a push-pull rod of the bidirectional hydraulic cylinder 1 penetrates through a top plate of the main body frame 2 and then is connected with a driving rod 3 below, the left side and the right side of the driving rod 3 are inclined planes and are provided with first bosses, the inclined plane at the inner side of the transition sliding block 4 is provided with a first groove matched and connected with the first bosses, the left side and the right side of the bottom of the transition sliding block 4 are respectively and fixedly connected with a loading seat 5, the inner side end of the loading seat 5 is provided with a buffer sliding block 15, the buffer sliding block 15 slides in a second groove at the bottom of the upper end of the loading seat 5 through a second boss at the top, a loading rod 13 is fixedly penetrated in the middle part of the buffer sliding block 15, the inner side end of the loading rod 13 is detachably connected with a loading block 14, the front side and the back side of the buffer sliding block 15 are respectively connected with a compression block 11 at the outer side through a compression rod 12, and the outer side end of a spring 10 is fixed on a spring seat 7, the inner side end of the fixed rod 8 is in contact with the outer side end of the compression block 11, the pressure sensor 6 is arranged between the spring seat 7 and the inner wall of the loading seat 5, the inner side end of the fixed rod is fixedly connected with the compression block 11, and the other end of the fixed rod penetrates through the spring 10, the spring seat 7, the pressure sensor 6 and the buffer sliding block 15 in sequence and then is fixed on the loading seat 5.
Preferably, the end surface of the loading block 14 is arc-shaped.
Preferably, the main body frame 2 is fixedly connected with the supporting seat 9 through bolts.
Preferably, a threaded hole is formed in the middle of the buffer sliding block 15, the loading rod 13 penetrates through the rear outer side end of the threaded hole and is fixed through a bolt, and the loading rod 13 is in threaded connection with the loading block 14.
Specifically, the compression rod 12 is a threaded rod, one end of the threaded rod penetrates through the buffer sliding block 15, the other end of the threaded rod penetrates through the compression block 11, and the contact positions of the front end and the rear end of the compression rod 12 and the front end and the rear end of the buffer sliding block 15 and the contact positions of the front end and the rear end of the compression block 11 are fixed through bolts.
Specifically, the fixing rod 8 is a threaded rod, the inner end of the fixing rod 8 penetrates through the compression block 11 and then is fixed by a bolt, and the outer end of the fixing rod penetrates through the loading seat 5 and then is fixed by a bolt.
Specifically, the inside cavity that is equipped with installation transition slider 4 of main part frame 2, the cavity lower part is equipped with square groove, and both sides are equipped with the square boss of being connected with square groove cooperation around the transition slider 4 lower part.
Preferably, the first boss, the first groove, the second boss and the second groove are all in a T shape.
Preferably, a hollow cavity is arranged in the middle of the transition sliding block 4.
Specifically, two driving blocks are arranged at the top of the driving rod 3 and connected through a connecting rod, and the bottom of a push-pull rod of the bidirectional hydraulic cylinder 1 is clamped with the connecting rod.
The utility model has the beneficial effects that: the utility model can simulate the loading condition of the flexible bearing in the working process of the harmonic reducer, the load is kept unchanged in the process of testing the performance of the flexible bearing, and the load of the flexible bearing with various sizes can be applied by adjusting the telescopic length of the push-pull rod of the bidirectional hydraulic cylinder. Meanwhile, the whole structure of the equipment is not damaged when few parts are replaced, and the test requirements of flexible bearings with different sizes are met, so that the applicability and the universality of the equipment are improved.
Drawings
FIG. 1 is a schematic plan view of a loading device of a flexible bearing testing machine for a harmonic reducer;
FIG. 2 is an assembly drawing of a drive rod and a transition slider of a loading device of a flexible bearing testing machine for a harmonic reducer;
FIG. 3 is an assembly schematic diagram of a loading block, a loading seat, a buffer slide block, a spring and a loading rod of a flexible bearing testing machine for a harmonic reducer;
FIG. 4 is a right side view of the overall structure of a loading device of a flexible bearing testing machine for a harmonic reducer;
fig. 5 is a schematic view of the overall structure of a loading device of a flexible bearing testing machine for a harmonic reducer.
Reference numbers in the figures: the device comprises a bidirectional hydraulic cylinder-1, a main body frame-2, a driving rod-3, a transition sliding block-4, a loading seat-5, a pressure sensor-6, a spring seat-7, a spring fixing rod-8, a supporting seat-9, a spring-10, a compression block-11, a compression rod-12, a loading rod-13, a loading block-14 and a buffer sliding block-15.
Detailed Description
The utility model is further described with reference to the following figures and specific examples.
Embodiment 1 as shown in fig. 1 to 5, a loading device of a flexible bearing test bed for a harmonic reducer comprises a bidirectional hydraulic cylinder 1, a main body frame 2, a driving rod 3, a transition slider 4, a loading seat 5, a pressure sensor 6, a spring seat 7, a spring fixing rod 8, a supporting seat 9, a spring 10, a compression block 11, a compression rod 12, a loading rod 13, a loading block 14 and a buffer slider 15;
the main body frame 2 is fixedly connected with a supporting seat 9, a bidirectional hydraulic cylinder 1 is arranged above the main body frame 2, the left side and the right side of the main body frame are provided with slideways for a transition sliding block 4 to slide, a push-pull rod of the bidirectional hydraulic cylinder 1 penetrates through a top plate of the main body frame 2 and then is connected with a driving rod 3 below, the left side and the right side of the driving rod 3 are inclined planes and are provided with first bosses, the inclined plane at the inner side of the transition sliding block 4 is provided with a first groove matched and connected with the first bosses, the left side and the right side of the bottom of the transition sliding block 4 are respectively and fixedly connected with a loading seat 5, the inner side end of the loading seat 5 is provided with a buffer sliding block 15, the buffer sliding block 15 slides in a second groove at the bottom of the upper end of the loading seat 5 through a second boss at the top, a loading rod 13 is fixedly penetrated in the middle part of the buffer sliding block 15, the inner side end of the loading rod 13 is detachably connected with a loading block 14, the front side and the back side of the buffer sliding block 15 are respectively connected with a compression block 11 at the outer side through a compression rod 12, and the outer side end of a spring 10 is fixed on a spring seat 7, the inner side end of the fixed rod 8 is in contact with the outer side end of the compression block 11, the pressure sensor 6 is arranged between the spring seat 7 and the inner wall of the loading seat 5, the inner side end of the fixed rod is fixedly connected with the compression block 11, and the other end of the fixed rod penetrates through the spring 10, the spring seat 7, the pressure sensor 6 and the buffer sliding block 15 in sequence and then is fixed on the loading seat 5.
Furthermore, the end face of the loading block 14 is arc-shaped, the loading device and the flexible bearing to be tested are concentrically installed, the loading block 14 is about a 60-degree arc, a loading load directly acts on the flexible bearing to be tested, and the load is kept unchanged in the process of testing the performance of the flexible bearing after the load is adjusted and fixed.
Further, the main body frame 2 is fixedly connected with the supporting seat 9 through bolts, and the structure is simple and the installation is convenient.
Furthermore, a threaded hole is formed in the middle of the buffer sliding block 15, the loading rod 13 penetrates through the threaded hole and is fixed to the outer side end of the rear portion of the threaded hole through a bolt, the loading rod 13 is in threaded connection with the loading block 14, and different loading blocks 14 can be replaced according to requirements.
Further, compression rod 12 is the threaded rod and its one end passes buffer slide 15, and other end passes compression block 11, and compression rod 12 all passes through bolt fastening, easy dismounting with buffer slide 15 front and back both ends, compression block 11 front and back both ends's contact department.
Furthermore, the fixing rod 8 is a threaded rod, the inner side end of the fixing rod 8 penetrates through the compression block 11 and then is fixed through a bolt, and the outer side end of the fixing rod penetrates through the loading seat 5 and then is fixed through a bolt, so that the structure is simple, and the installation is convenient.
Further, the inside cavity that is equipped with installation transition slider 4 of main part frame 2, the cavity lower part is equipped with square groove, and both sides are equipped with the square boss of being connected with square groove cooperation around the transition slider 4 lower part. The transition sliding block 4 can slide left and right in the square groove.
Furthermore, the first boss, the first groove, the second boss and the second groove are all T-shaped, so that the connected parts are connected more tightly, the structure is more reasonable, and the space is saved.
Furthermore, the middle part of the transition sliding block 4 is provided with a hollow cavity, so that the material can be saved, and the cost can be reduced.
Furthermore, two driving blocks are arranged at the top of the driving rod 3 and connected through a connecting rod, and the bottom of a push-pull rod of the bidirectional hydraulic cylinder 1 is clamped with the connecting rod, so that the structure is simple.
The working principle of the utility model is as follows: when the driving rod 3 is subjected to the telescopic motion of the bidirectional hydraulic cylinder 1, the driving rod 3 vertically moves, and the transition sliding blocks 4 at the left end and the right end of the driving rod 3 move left and right under the action of the driving rod 3. When the bidirectional hydraulic cylinder 1 is in the longest extending state, the driving rod 3 is positioned at the lower part of the main body frame 2, and the distance between the left and right transition sliding blocks 4 in the horizontal direction is the farthest distance. When a push-pull rod of the bidirectional hydraulic cylinder 1 is in a pulling-back process in a longest extending state, a driving rod 3 moves in a vertical direction under the action of the push-pull rod of the bidirectional hydraulic cylinder 1, first T-shaped bosses are arranged at the left end and the right end of the driving rod 3, first T-shaped grooves are formed in the inclined surface of a transition sliding block 4, the driving rod 3 and the transition sliding block 4 slide in a matching manner through the first T-shaped bosses and the first T-shaped grooves, the pulling-back driving rod 3 of the bidirectional hydraulic cylinder 1 moves upwards to drive two opposite transition sliding blocks 4 to horizontally move towards the center of the device, the movement of the transition sliding block 4 drives a loading seat 5 to horizontally move towards the center of the device, loading blocks 14 at the left end and the right end horizontally move towards the center of the device to be in contact with a flexible bearing to be tested, and the reaction force of the loading blocks 14 in contact with the flexible bearing to be tested enables a buffer sliding block 15 to move outwards on a second T-shaped groove on the loading seat 5, compression pole 12 couples together compression piece 11 and buffering slider 15 through the nut, and buffering slider 15 outwards removes on passing through compression pole 12 transmission power to compression piece 11 to make compression piece 11 compression spring 10, the pressure sensor 6 of the other end of spring 10 can measure the pressure that receives, and then can apply accurate loading to the flexible bearing that awaits measuring, just opposite to the uninstallation mode and the loading mode of the flexible bearing that awaits measuring.
By adjusting the telescopic length of the push-pull rod of the bidirectional hydraulic cylinder 1, the distance between the two transition sliding blocks 4 in the horizontal direction can be controlled, and the application of loads to flexible bearings of various sizes can be realized by replacing the corresponding loading blocks 14.
The loading device can simulate the loading condition of the flexible bearing in the working process of the harmonic reducer, and the load is kept unchanged in the process of testing the performance of the flexible bearing; the load of the flexible bearings with various sizes can be applied by adjusting the telescopic length of the push-pull rod of the bidirectional hydraulic cylinder 1; meanwhile, the whole structure of the equipment is not damaged when few parts are replaced, and the test requirements of flexible bearings with different sizes are met, so that the applicability and the universality of the equipment are improved.
In the present invention, the inner end and the inner side are an end or a side close to the center of the loading device, and the outer end and the outer side are opposite to the inner end and the inner side.
While the present invention has been described in detail with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (10)
1. The utility model provides a loading device of flexible bearing test bench for harmonic speed reducer ware which characterized in that: the device comprises a bidirectional hydraulic cylinder (1), a main body frame (2), a driving rod (3), a transition sliding block (4), a loading seat (5), a pressure sensor (6), a spring seat (7), a spring fixing rod (8), a supporting seat (9), a spring (10), a compression block (11), a compression rod (12), a loading rod (13), a loading block (14) and a buffer sliding block (15);
the main body frame (2) is fixedly connected with the supporting seat (9), a bidirectional hydraulic cylinder (1) is arranged above the main body frame (2), slide ways for the transition sliding block (4) to slide are arranged on the left side and the right side of the main body frame, a push-pull rod of the bidirectional hydraulic cylinder (1) penetrates through a top plate of the main body frame (2) and then is connected with a driving rod (3) below the top plate, the left side and the right side of the driving rod (3) are inclined planes and are provided with first bosses, first grooves matched and connected with the first bosses are formed in the inclined planes on the inner side of the transition sliding block (4), loading seats (5) are respectively and fixedly connected with the left side and the right side of the bottom of the transition sliding block (4), a buffer sliding block (15) is arranged at the inner side end of each loading seat (5), the buffer sliding block (15) slides in a second groove at the bottom of the upper end of each loading seat (5) through a second boss on the top portion, a loading rod (13) penetrates through the middle portion of each buffer sliding block (15), and is detachably connected with a loading block (14), the front side and the rear side of the buffer sliding block (15) are respectively connected with the compression block (11) on the outer side through the compression rod (12), the outer side end of the spring (10) is fixed on the spring seat (7), the inner side end of the spring contacts with the outer side end of the compression block (11), a pressure sensor (6) is arranged between the spring seat (7) and the inner wall of the loading seat (5), the inner side end of the fixed rod (8) is fixedly connected with the compression block (11), and the other end of the fixed rod sequentially penetrates through the spring (10), the spring seat (7), the pressure sensor (6) and the buffer sliding block (15) to be fixed on the loading seat (5).
2. The loading device of the flexible bearing test bed for the harmonic reducer according to claim 1, characterized in that: the end surface of the loading block (14) is arc-shaped.
3. The loading device of the flexible bearing test bed for the harmonic reducer according to claim 1, characterized in that: the main body frame (2) is fixedly connected with the supporting seat (9) through bolts.
4. The loading device of the flexible bearing test bed for the harmonic reducer according to claim 1, characterized in that: the middle of the buffer sliding block (15) is provided with a threaded hole, the outer end of the rear side of the loading rod (13) penetrating through the threaded hole is fixed through a bolt, and the loading rod (13) is in threaded connection with the loading block (14).
5. The loading device of the flexible bearing test bed for the harmonic reducer according to claim 1, characterized in that: the compression rod (12) is a threaded rod, one end of the compression rod penetrates through the buffering sliding block (15), the other end of the compression rod penetrates through the compression block (11), and the contact positions of the front end and the rear end of the compression rod (12) and the buffering sliding block (15) and the front end and the rear end of the compression block (11) are fixed through bolts.
6. The loading device of the flexible bearing test bed for the harmonic reducer according to claim 1, characterized in that: the fixing rod (8) is a threaded rod, the inner side end of the fixing rod (8) penetrates through the compression block (11) and then is fixed through a bolt, and the outer side end of the fixing rod penetrates through the loading seat (5) and then is fixed through a bolt.
7. The loading device of the flexible bearing test bed for the harmonic reducer according to claim 1, characterized in that: the main body frame (2) is internally provided with a cavity for installing the transition sliding block (4), the lower part of the cavity is provided with a square groove, and the front side and the rear side of the lower part of the transition sliding block (4) are provided with square bosses which are connected with the square groove in a matched mode.
8. The loading device of the flexible bearing test bed for the harmonic reducer according to claim 1, characterized in that: the first boss, the first groove, the second boss and the second groove are all T-shaped.
9. The loading device of the flexible bearing test bed for the harmonic reducer according to claim 1, characterized in that: and a hollow cavity is arranged in the middle of the transition sliding block (4).
10. The loading device of the flexible bearing test bed for the harmonic reducer according to claim 1, characterized in that: the top of the driving rod (3) is provided with two driving blocks which are connected through a connecting rod, and the bottom of a push-pull rod of the bidirectional hydraulic cylinder (1) is connected with the connecting rod in a clamping manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220174630.0U CN216746784U (en) | 2022-01-23 | 2022-01-23 | Loading device of flexible bearing test bed for harmonic reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220174630.0U CN216746784U (en) | 2022-01-23 | 2022-01-23 | Loading device of flexible bearing test bed for harmonic reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216746784U true CN216746784U (en) | 2022-06-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220174630.0U Expired - Fee Related CN216746784U (en) | 2022-01-23 | 2022-01-23 | Loading device of flexible bearing test bed for harmonic reducer |
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| Country | Link |
|---|---|
| CN (1) | CN216746784U (en) |
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2022
- 2022-01-23 CN CN202220174630.0U patent/CN216746784U/en not_active Expired - Fee Related
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Granted publication date: 20220614 |