CN111551357A - Rotor torsional vibration test device - Google Patents
Rotor torsional vibration test device Download PDFInfo
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- CN111551357A CN111551357A CN202010435796.9A CN202010435796A CN111551357A CN 111551357 A CN111551357 A CN 111551357A CN 202010435796 A CN202010435796 A CN 202010435796A CN 111551357 A CN111551357 A CN 111551357A
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- rotor
- torsional vibration
- test
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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
Abstract
The invention belongs to the technical field of rotating machinery experiment devices, and particularly relates to a rotor torsional vibration experiment device. Aiming at the defect that the function of the conventional rotor torsional vibration simulation experiment table is single, the invention adopts the following technical scheme: a rotor torsional vibration test apparatus, comprising: a base; the supporting device is arranged on the base; a test rotor rotatably supported by a support device; the driving assembly drives the test rotor to rotate; the torsional vibration piece is arranged at the driving end of the test rotor; a load applying device that applies a load to the rotor. The rotor torsional vibration test device is provided with the driving assembly, the test rotor is driven to rotate by the driving assembly, and rotor torsional vibration tests at different rotating speeds can be carried out; the device is provided with a load loading device, so that a rotor torque test under a load can be carried out.
Description
Technical Field
The invention belongs to the technical field of rotating machinery experiment devices, and particularly relates to a rotor torsional vibration experiment device.
Background
In recent years, with the increase of the capacity of a single machine, the increase of the capacity of a power transmission network, and the diversification of power loads, the accidents of shafting torsional vibration induced by machine-network coupling are more frequent.
Torsional vibration has very big destructiveness, and generating set shafting torsional vibration can cause the unit operation shafting junction to produce the distortion, leads to shafting fatigue damage, and the long-term accumulation of shafting torsional vibration even causes the rotor fracture, seriously influences unit safety. The unit damage accident caused by multi-start shafting torsional vibration which occurs at home and abroad causes serious economic loss.
Most of the existing shafting research aiming at the turbonator focuses on theoretical analysis. The shafting torsional vibration relates to a plurality of disciplines such as electric power, materials, mechanics and the like, and the shafting boundary condition is complex during operation, so that the calculation simulation has great deviation from the actual condition, and the research on the shafting safety is seriously influenced. Most of the existing rotor torsional vibration simulation test beds focus on torsional vibration tests at different rotating speeds, are difficult to test or cannot test the torsional vibration tests under dynamic loads, and have single function.
In addition, the structure of the existing multifunctional rotor torsional vibration testing device is improved.
Disclosure of Invention
The invention provides a rotor torsional vibration test device aiming at the defect that the function of the conventional rotor torsional vibration simulation experiment table is single, and the device can be used for performing torsional vibration tests of rotors at different rotating speeds and other tests.
In order to achieve the purpose, the invention adopts the following technical scheme: a rotor torsional vibration test apparatus, comprising:
a base;
the supporting device is arranged on the base;
a test rotor rotatably supported by a support device;
the driving assembly drives the test rotor to rotate;
the torsional vibration piece is arranged at the driving end of the test rotor;
a load applying device that applies a load to the rotor.
The rotor torsional vibration test device is provided with the driving assembly, the test rotor is driven to rotate by the driving assembly, and rotor torsional vibration tests at different rotating speeds can be carried out; the device is provided with a load loading device, so that a rotor torque test under a load can be carried out. The torsional vibration piece is sleeved on the test rotor, unbalanced force is provided for the test rotor during testing, and the torsional vibration piece can be a non-uniform circle such as a cam.
As an improvement, the supporting device comprises a first supporting component positioned at the driven end of the test rotor, the first supporting component comprises a first vertical plate, a first cylinder fixedly connected with the first vertical plate, and a bearing fixedly connected in the first cylinder, and the inner ring of the bearing is matched with the test rotor.
As an improvement, the first cylinder comprises two half cylinders which are assembled together, a positioning groove is formed in the first cylinder, and the bearing is installed in the positioning groove.
As an improvement, an end cover is arranged at the outer end of the first cylinder, and a damping spring is arranged between the end cover and the test rotor.
As an improvement, the test rotor comprises a driving shaft, a coupler and a driven shaft, the driving end of the coupler is in threaded connection with the driving shaft, and the driven end of the coupler is in concave-convex positioning butt joint with the driven shaft.
As an improvement, the end cover seals the outer end of the first cylinder, a first connecting piece and a second connecting piece which can rotate relatively are further arranged between the inner end of the first cylinder and the coupler, the first connecting piece is in threaded connection with the inner end of the first cylinder, and the second connecting piece is fixedly connected with the coupler.
As an improvement, one end of the first connecting piece is in threaded connection with the first cylinder and is fastened through a screw, the first connecting piece is provided with a small-diameter ring, the second connecting piece is provided with a large-diameter ring, and the large-diameter ring is arranged outside the small-diameter ring.
As an improvement, the supporting device comprises a second supporting assembly, the second supporting assembly comprises a second vertical plate, a second cylinder fixedly connected with the second vertical plate, and a bearing fixedly connected in the second cylinder, and the inner ring of the bearing is matched with the test rotor.
As a refinement, the load loading means is located adjacent the torsional member; the load loading device comprises a first gear arranged on the rotating shaft, a second gear capable of being meshed with the first gear, a gear shaft fixedly connected with the second gear, a bearing with a seat matched with the gear shaft and a rotating handle arranged at the other end of the gear shaft.
As an improvement, the load loading device further comprises a displacement assembly for enabling the bearing with the seat, the gear shaft and the second gear to move in the radial direction, wherein the displacement assembly comprises a sliding rail arranged on the base, a sliding block matched with the sliding rail, a screw nut assembly and a moving handle.
The rotor torsional vibration test device has the beneficial effects that: the test device is provided with a driving assembly, and the test rotor is driven to rotate by the driving assembly, so that the rotor torsional vibration test at different rotating speeds can be carried out; the device is provided with a load loading device, and can be used for carrying out torsional vibration tests at different rotating speeds and torque tests under rotor loads.
Drawings
Fig. 1 and 2 are schematic perspective views (a first cylinder and a second cylinder are half-sectioned) of a rotor torsional vibration test apparatus according to a first embodiment of the present invention.
Fig. 3 is a sectional view of a rotor torsional vibration test apparatus according to a first embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a load loading device of a rotor torsional vibration testing apparatus according to a first embodiment of the present invention.
In the figure, 1, a base; 2. a support device; 21. a first support assembly; 211. a first vertical plate; 212. a first cylinder; 213. an end cap; RB, a bearing; 22. a second support assembly; 221. a second vertical plate; 222. a second cylinder; 3. testing the rotor; 31. a drive section; 32. a coupling; 33. a driven section; 4. a drive assembly; 5. a torsional vibration member; 6. a load loading device; 61. a first gear; 62. a second gear; 63. a gear shaft; 64. a pedestal bearing; 65. rotating the handle; 66. a slide rail; 67. a slider; 68. a displacement assembly; 7. a first connecting member; 8. a second connecting member; 9. a damping spring.
Detailed Description
The technical solutions of the embodiments of the present invention will be explained and explained below with reference to the drawings of the embodiments of the present invention, but the embodiments described below are only preferred embodiments of the present invention, and are not all embodiments. Other embodiments obtained by persons skilled in the art without any inventive work based on the embodiments in the embodiment belong to the protection scope of the invention.
Referring to fig. 1 to 4, a rotor torsional vibration test apparatus of the present invention includes:
a base;
the supporting device is arranged on the base;
a test rotor rotatably supported by a support device;
the driving assembly drives the test rotor to rotate;
the torsional vibration piece is arranged at the driving end of the test rotor;
a load applying device that applies a load to the rotor.
The rotor torsional vibration test device is provided with the driving assembly, the test rotor is driven to rotate by the driving assembly, and rotor torsional vibration tests at different rotating speeds can be carried out; the device is provided with a load loading device, so that a rotor torque test under a load can be carried out. The torsional vibration piece is sleeved on the test rotor, unbalanced force is provided for the test rotor during testing, and the torsional vibration piece can be a non-uniform circle such as a cam.
Example one
Referring to fig. 1 to 4, a rotor torsional vibration testing apparatus according to a first embodiment of the present invention includes:
a base 1;
the supporting device 2 is arranged on the base 1;
a test rotor 3, said test rotor 3 being rotatably supported by a support means 2;
the driving assembly 4 drives the test rotor 3 to rotate;
the torsional vibration piece 5 is arranged at the driving end of the test rotor 3;
a load applying device 6, the load applying device 6 applying a load to the rotor.
As an improvement, the supporting device 2 includes a first supporting assembly 21 located at the driven end of the test rotor 3, the first supporting assembly 21 includes a first vertical plate 211, a first cylinder 212 fixedly connected to the first vertical plate 211, and a bearing RB fixedly connected to the first cylinder 212, and an inner ring of the bearing RB is matched with the test rotor 3.
In order to prevent the first vertical plate 211 and the first cylinder 212 from moving radially, the first vertical plate 211 and the first cylinder 212 may be fixed by providing an axial screw.
As a modification, the first cylinder 212 comprises two half cylinders assembled together, and a positioning groove is formed in the first cylinder 212, and the bearing RB is mounted in the positioning groove.
As a modification, an end cover 213 is disposed at the outer end of the first cylinder 212, and a damping spring 9 is disposed between the end cover 213 and the test rotor 3. The damping spring 9 is a compression spring. The arrangement of the damping spring 9 can reduce the axial play of the test rotor 3.
As the improvement, the test rotor 3 comprises a driving shaft, a coupler 32 and a driven shaft, the driving end of the coupler 32 is in threaded connection with the driving shaft, and the driven end of the coupler 32 is in concave-convex positioning butt joint with the driven shaft. The drive shaft has external threads and the coupling 32 has external threads, the coupling 32 being threaded onto the drive shaft. The driven end of the coupler 32 is in concave-convex positioning butt joint with the driven shaft, positioning holes can be formed in the end faces of the coupler 32 and the driven shaft, positioning blocks are arranged in the positioning holes, and the mode is easy to machine and assemble.
As an improvement, the end cover 213 closes the outer end of the first cylinder 212, a first connecting piece 7 and a second connecting piece 8 which can rotate relatively are further arranged between the inner end of the first cylinder 212 and the coupler 32, the first connecting piece 7 is in threaded connection with the inner end of the first cylinder 212, and the second connecting piece 8 is fixedly connected with the coupler 32. The end cover 213 reduces the dust and impurities entering the first cylinder 212 from the outer end of the first cylinder 212, thereby improving the measurement accuracy.
As a modification, one end of the first connecting member 7 is screwed and fastened to the first cylinder 212 by a screw, the first connecting member 7 has a small-diameter ring, and the second connecting member 8 has a large-diameter ring outside the small-diameter ring. The large diameter ring and the small diameter ring form a close sealing structure.
As an improvement, the supporting device 2 includes a second supporting assembly 22, the second supporting assembly 22 includes a second vertical plate 221, a second cylinder 222 fixedly connected to the second vertical plate 221, and a bearing RB fixedly connected to the second cylinder 222, and an inner ring of the bearing RB is matched with the test rotor 3.
In order to prevent the second vertical plate 221 and the second cylinder 222 from moving radially, the second vertical plate 221 and the second cylinder 222 can be fixedly connected by arranging axial screws.
As a modification, the load loading means 6 is located adjacent the torsional member 5, and the first gear 61 is located between the torsional member 5 and the second support member 22.
As a modification, the load applying device 6 includes a first gear 61 disposed on the rotating shaft, a second gear 62 capable of meshing with the first gear 61, a gear shaft 63 fixedly connected to the second gear 62, a bearing 64RB with a seat engaged with the gear shaft 63, and a rotating handle 65 disposed at the other end of the gear shaft 63. The engagement process of the second gear 62 with the first gear 61 can be made easy by providing the turning handle 65.
Different loads may be mounted on the gear shaft 63 to test torsional vibration at different loads.
As a modification, the load loading device 6 further includes a displacement assembly 68 for radially moving the bearing 64RB with seat, the gear shaft 63 and the second gear 62, and the displacement assembly 68 includes a slide rail 66 arranged on the base 1, a slide block 67 engaged with the slide rail 66, a lead screw nut assembly and a moving handle.
The load applying means 6 is further provided with screws for fixing the slide 67 relative to the slide 66.
The rotor torsional vibration test device provided by the embodiment of the invention has the beneficial effects that: the test device is provided with a driving assembly 4, and the test rotor 3 is driven to rotate by the driving assembly 4, so that the rotor torsional vibration test at different rotating speeds can be carried out; the device is provided with a load loading device 6, so that a rotor torque test under a load can be carried out.
While the invention has been described with reference to specific embodiments thereof, it will be understood by those skilled in the art that the invention is not limited thereto but is intended to cover various modifications and changes, including but not limited to the details shown in the drawings and described in the foregoing detailed description. Any modification which does not depart from the functional and structural principles of the invention is intended to be included within the scope of the following claims.
Claims (10)
1. The utility model provides a rotor torsional vibration test device which characterized in that: the rotor torsional vibration test device includes:
a base (1);
the supporting device (2), the said supporting device (2) locates on base (1);
a test rotor (3), said test rotor (3) being rotatably supported by a support means (2);
the driving assembly (4), the driving assembly (4) drives the test rotor (3) to rotate;
the torsional vibration piece (5), the said torsional vibration piece (5) locates the drive end of the test rotor (3);
a load applying device (6), the load applying device (6) applying a load to the rotor.
2. A rotor torsional vibration test apparatus as claimed in claim 1, wherein: the supporting device (2) comprises a first supporting component (21) located at the driven end of the test rotor (3), the first supporting component (21) comprises a first vertical plate (211), a first cylinder (212) fixedly connected with the first vertical plate (211), and a bearing (RB) fixedly connected in the first cylinder (212), and the inner ring of the bearing (RB) is matched with the test rotor (3).
3. A rotor torsional vibration test apparatus as claimed in claim 2, wherein: the first cylinder (212) comprises two half cylinders which are assembled together, a positioning groove is formed in the first cylinder (212), and the bearing (RB) is installed in the positioning groove.
4. A rotor torsional vibration test apparatus as claimed in claim 2, wherein: an end cover (213) is arranged at the outer end of the first cylinder (212), and a damping spring (9) is arranged between the end cover (213) and the test rotor (3).
5. The rotor torsional vibration test apparatus of claim 4, wherein: the test rotor (3) comprises a driving shaft, a coupler (32) and a driven shaft, the driving end of the coupler (32) is in threaded connection with the driving shaft, and the driven end of the coupler (32) is in concave-convex positioning butt joint with the driven shaft.
6. A rotor torsional vibration test apparatus as claimed in claim 5, wherein: the end cover (213) seals the outer end of the first cylinder (212), a first connecting piece (7) and a second connecting piece (8) which can rotate relatively are further arranged between the inner end of the first cylinder (212) and the coupler (32), the first connecting piece (7) is in threaded connection with the inner end of the first cylinder (212), and the second connecting piece (8) is fixedly connected with the coupler (32).
7. The rotor torsional vibration test apparatus of claim 6, wherein: one end of the first connecting piece (7) is in threaded connection with the first cylinder (212) and is fastened through a screw, the first connecting piece (7) is provided with a small-diameter ring, the second connecting piece (8) is provided with a large-diameter ring, and the large-diameter ring is arranged outside the small-diameter ring.
8. A rotor torsional vibration test apparatus as claimed in claim 1, wherein: the supporting device (2) comprises a second supporting component (22), the second supporting component (22) comprises a second vertical plate (221), a second shell fixedly connected with the second vertical plate (221), and a bearing (RB) fixedly connected in the second shell, and an inner ring of the bearing (RB) is matched with the test rotor (3).
9. A rotor torsional vibration test apparatus as claimed in claim 1, wherein: the load loading device (6) is close to the torsional vibration piece (5); the load loading device (6) comprises a first gear (61) arranged on the rotating shaft, a second gear (62) capable of being meshed with the first gear (61), a gear shaft (63) fixedly connected with the second gear (62), a bearing (64) with a base matched with the gear shaft (63), and a rotating handle (65) arranged at the other end of the gear shaft (63).
10. A rotor torsional vibration test apparatus as claimed in claim 8, wherein: the load loading device (6) further comprises a displacement assembly (68) enabling the bearing with the seat (64), the gear shaft (63) and the second gear (62) to move radially, wherein the displacement assembly (68) comprises a sliding rail (66) arranged on the base (1), a sliding block (67) matched with the sliding rail (66), a screw nut assembly and a moving handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010435796.9A CN111551357A (en) | 2020-05-21 | 2020-05-21 | Rotor torsional vibration test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010435796.9A CN111551357A (en) | 2020-05-21 | 2020-05-21 | Rotor torsional vibration test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111551357A true CN111551357A (en) | 2020-08-18 |
Family
ID=72000938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010435796.9A Pending CN111551357A (en) | 2020-05-21 | 2020-05-21 | Rotor torsional vibration test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111551357A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112179690A (en) * | 2020-09-04 | 2021-01-05 | 沈阳工业大学 | Test bed for testing sealing performance of heavy pressure centrifuge |
| CN113418688A (en) * | 2021-06-22 | 2021-09-21 | 嘉兴恩碧技电气有限公司 | Slip ring integrated test equipment |
-
2020
- 2020-05-21 CN CN202010435796.9A patent/CN111551357A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112179690A (en) * | 2020-09-04 | 2021-01-05 | 沈阳工业大学 | Test bed for testing sealing performance of heavy pressure centrifuge |
| CN112179690B (en) * | 2020-09-04 | 2022-08-05 | 沈阳工业大学 | Test bed for testing sealing performance of heavy pressure centrifuge |
| CN113418688A (en) * | 2021-06-22 | 2021-09-21 | 嘉兴恩碧技电气有限公司 | Slip ring integrated test equipment |
| CN113418688B (en) * | 2021-06-22 | 2022-01-04 | 嘉兴恩碧技电气有限公司 | Slip ring integrated test equipment |
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