CN217442852U - Rub-impact test device - Google Patents
Rub-impact test device Download PDFInfo
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- CN217442852U CN217442852U CN202221392640.8U CN202221392640U CN217442852U CN 217442852 U CN217442852 U CN 217442852U CN 202221392640 U CN202221392640 U CN 202221392640U CN 217442852 U CN217442852 U CN 217442852U
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Abstract
The utility model provides a bump test device that rubs can the accurate control axial bump the invasion volume that rubs, and simple structure, and the cost is lower. The rub-impact test device is used for a rotor and stator rub-impact test of an aircraft engine and comprises a rotor test piece, a rub-impact body, a support, a rub-impact rod, a feeding device and a positioning device, wherein the support is connected with the rotor test piece and comprises a threaded through hole, and the axis of the threaded through hole is parallel to the axis of the rotor test piece; the friction rod is in threaded connection with the threaded through hole, and one end of the friction rod is connected with the friction body; the feeding device is connected with the rubbing rod and is used for driving the rubbing rod to rotate so as to change the axial position of the rubbing rod; the positioning device is used for locking the axial position of the rubbing rod.
Description
Technical Field
The utility model relates to an aeroengine tests technical field, concretely relates to bump test device that rubs.
Background
In order to increase the efficiency of an aircraft engine, the clearance between the rotor and the stator is designed to be small. However, rotor rubbing is caused by excessive vibration of the rotor of the engine or unstable flow, and is more likely to occur due to excessively small rotor clearances. Rotor rubbing not only makes the engine vibrate more vigorously, the resulting wear further reduces the efficiency of the engine and, in severe cases, even causes engine damage.
The rotor rubbing test of the system is not practical by adopting a real engine. Therefore, in order to fully reveal the rotor rubbing mechanism and the rotor rubbing fault characteristics, researchers often adopt an engine rotor rubbing fault simulation tester to conduct related research. One of the design cores of the tester is how to simulate rotor rubbing.
The existing engine rotor and stator rubbing test device mainly aims at rotor and stator radial rubbing faults, the number of test devices for rotor and stator axial rubbing faults is small, and the existing axial rubbing test device cannot accurately control the rubbing invasion amount, so that a rotor and stator axial rubbing simulation test device capable of accurately simulating a complex axial rubbing form of an engine is urgently needed.
It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present disclosure, and thus may include information that does not constitute prior art known to those of ordinary skill in the art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a bump test device rubs, can the accurate control axial bump the invasion volume of rubbing, and simple structure, the cost is lower.
The rub-impact test device for achieving the purpose is used for a rotor and stator rub-impact test of an aircraft engine and comprises a rotor test piece, a rub-impact body, a support, a rub-impact rod, a feeding device and a positioning device, wherein the support is connected with the rotor test piece and comprises a threaded through hole, and the axis of the threaded through hole is parallel to the axis of the rotor test piece; the friction rod is in threaded connection with the threaded through hole, and one end of the friction rod is connected with the friction body; the feeding device is connected with the rubbing rod and is used for driving the rubbing rod to rotate so as to change the axial position of the rubbing rod; the positioning device is used for locking the axial position of the rubbing rod.
In one or more embodiments of the rub-impact testing apparatus, the feeding device includes an operating panel, the positioning device includes a positioning pin and a plurality of first positioning holes, the plurality of first positioning holes are disposed in one of the support and the operating panel and distributed on a first circumference with a first point as a center, the first point is located on an axis of the rub-impact rod, the positioning pin includes a first end and a second end, the first end is axially opposite to the second end, the first end is used for being inserted into one of the first positioning holes, and the second end is used for being connected with the other one of the support and the operating panel to lock a relative position of the operating panel and the support.
In one or more embodiments of the rub-impact testing apparatus, the first plurality of positioning holes are evenly distributed over the first circumference.
In one or more embodiments of the rub-impact testing apparatus, the positioning apparatus further includes a plurality of second positioning holes for inserting the second ends of the positioning pins, the second positioning holes are disposed in the other one of the support and the operating panel and distributed on a second circumference with a second point as a center, and the second point is located on the axis of the rub-impact rod.
In one or more embodiments of the rub-impact test apparatus, the number of the first positioning holes is N 1 And are uniformly distributed on the first circumference, and the number of the second positioning holes is N 2 The distribution range of the second positioning holes on the second circumference is smaller than the whole circumference, and the included angle between the connecting lines of every two adjacent second positioning holes and the second point is (360 degrees/N) 1 +360°/N 1 /N 2 )。
In one or more embodiments of the rub-impact test apparatus, a line connecting a first or a last one of the first positioning holes and the second point is along a horizontal direction or a vertical direction.
In one or more embodiments of the rub-impact testing apparatus, the rub-impact body and the operating plate are respectively connected to both axial ends of the rub-impact rod.
In one or more embodiments of the rub-impact test device, the plurality of first positioning holes penetrate through the operating panel, a plurality of scales distributed along the circumferential direction are arranged on one side, far away from the support, of the operating panel, each scale corresponds to one of the first positioning holes, and the scales are used for marking the corresponding angle of the first positioning hole.
In one or more embodiments of the rub-impact testing device, the rub-impact testing device further comprises two locking nuts, the two locking nuts are respectively in threaded connection with the rub-impact rod and are respectively located on two axial sides of the operating panel, and the locking nuts are used for locking the relative positions of the operating panel and the rub-impact rod.
In one or more embodiments of the rub-impact test apparatus, the support includes a plurality of the threaded through holes, the plurality of the threaded through holes are distributed on a third circumference centered on a third point, and the third point is located on an axis of the rotor test piece.
In one or more embodiments of the rub-impact testing apparatus, the rub-impact rod is detachably connected to the rub-impact body.
In one or more embodiments of the rub-impact test apparatus, the support is a bearing mounting support of the rotor test piece.
This bump test device that rubs passes through threaded connection through bumping pole and support to adopt positioner locking to bump the axial position of rubbing pole and the body of rubbing, can adjust accurately and control the axial bump the invasion amount that rubs among the experiment of rubbing, and except the support, all the other spare parts do not all receive the structural dimension restriction of rotor test piece, and the commonality is good, simple structure, easily makes and assembles, and the cost is lower, the simple operation.
Drawings
The above and other features, properties and advantages of the present invention will become more apparent from the following description of the embodiments with reference to the accompanying drawings. It is to be noted that the figures are given by way of example only and are not to scale, and that the scope of protection of the invention as claimed in practice should not be limited thereby, and that components having similar relative characteristics or features may have the same or similar reference numerals.
FIG. 1 shows a schematic view of a rub-impact test apparatus.
Fig. 2 shows a schematic view from the direction a in fig. 1.
Fig. 3 shows a partial schematic view at B in fig. 2.
Fig. 4 shows a partial schematic view of the support.
FIG. 5 illustrates a partial schematic view of a rub bar according to one embodiment.
FIG. 6 illustrates a partial schematic view of a rub bar according to another embodiment.
Detailed Description
The following discloses many different embodiments or examples for implementing the subject technology described. Specific examples of components and arrangements are described below to simplify the present disclosure, but these are merely examples and are not intended to limit the scope of the present invention. Furthermore, some of the features, structures, or characteristics of one or more embodiments of the present application may be combined as appropriate.
According to the utility model discloses a rub-impact test device 1 of one or more embodiments is used for aeroengine's rotor stator axial to rub-impact test, refer to fig. 1 to 6, should rub-impact test device 1 and include rotor test piece 10, support 20, rub-impact pole 30, rub-impact body 40, feeding device 50 and positioner 60.
The rotor test piece 10 comprises a rotor shaft 11 and a rotor disk 12, wherein the rotor shaft 11 is connected with a support 20. The support 20 includes a threaded through hole 21, and the axis of the threaded through hole 21 is parallel to the axis of the rotor test piece 10. The rubbing rod 30 comprises a screw rod section 31 and is used for being in threaded connection with the threaded through hole 21, one axial end of the rubbing rod 30 is connected with a rubbing body 40, the rubbing body 40 is opposite to the rotor disc 12, and the rubbing body 40 is used for simulating a stator and generates axial rubbing with the rotor test piece 10. The feeding device 50 is connected to the rubbing rod 30 for rotating the rubbing rod 30 to change the axial positions of the rubbing rod 30 and the rubbing body 40, thereby adjusting the amount of rubbing penetration in the rubbing test. The positioning means 60 is used to lock the axial positions of the rubbing rod 30 and the rubbing body 40.
From this, this rub-impact testing device 1 is through bumping pole 30 and support 20 through threaded connection to adopt positioner 60 to lock the axial position who bumps pole 30 and the rubbing body 40, can adjust accurately and control the rub-impact invasion volume in the axial rub-impact test, and except support 20, all the other spare parts do not all receive the structural dimension restriction of rotor test piece 10, and the commonality is good, and simple structure easily makes and assembles, and the cost is lower, the simple operation.
The feeding device 50 comprises an operation plate 51, a through hole 511 is arranged in the middle of the operation plate 51, the through hole 511 is a threaded hole, and the rubbing rod 30 is connected with the through hole 511 through a thread. Two sides of the operating panel 51 are respectively provided with one locking nut 70, and the two locking nuts 70 are respectively in threaded connection with the rubbing rod 30, so that the operating panel 51 can be pressed through the locking nuts 70, the operating panel 51 is positioned and locked on the rubbing rod 30, and the rubbing rod locking device is simple in structure, reliable in connection and easy to assemble and adjust. In other embodiments, the operating disk 51 is snap-fit or otherwise connected to the operating disk 51. In the illustrated embodiment, the operating plate 51 is a circular plate, and in still other embodiments, the operating plate 51 has a rectangular or triangular or other cross-section.
With continued reference to fig. 1 to 6, the rubbing bodies 40 and the operating plate 51 are respectively attached to both axial ends of the rubbing rod 30, i.e., opposite to the first and second sides 201 and 202 of the support 20, respectively, for facilitating the operation.
The positioning device 60 includes a positioning pin 61 and a plurality of first positioning holes 601, the plurality of first positioning holes 601 are disposed on the operation panel 51 and distributed at a first point O 1 As a circle center and a first radius R 1 On a first circumference of radius, a first point O 1 Located on the axis of the crash bar 30, the locating pin 61 includes axially opposed first and second ends 611 and 612,the first end 611 is used for being inserted into one of the first positioning holes 601, and the second end 612 is used for being connected with the support 20, so that the operation plate 51 can be locked at different rotation angles by inserting the positioning pin 61 into different first positioning holes 601, so as to lock the rubbing rod 30 at different axial positions, and the structure is simple, and the operation is convenient.
The number of the first positioning holes 601 is N 1 ，N 1 The first positioning holes 601 are evenly distributed on the first circumference, that is, every two adjacent first positioning holes 601 and the first point O 1 Angle theta between the connecting lines 1 ＝360°/N 1 So as to accurately adjust and position the axial position of the rubbing rod 30, and has simple structure and easy processing and manufacturing.
Optionally, the positioning device 60 further comprises a plurality of second positioning holes 602 for inserting the second ends 612 of the positioning pins 61, the second positioning holes 602 are disposed on the support base 20, for example, the second positioning holes 602 are blind holes disposed on the second side 202 of the support base 20 or through holes penetrating through the support base 20. The number of the second positioning holes 602 is N 2 And is distributed at a second point O 2 As a circle center and a second radius R 2 On a second circumference of radius, a first radius R 1 And a second radius R 2 Equal, second point O 2 Is located on the axis of the rub bar 30, so that the accuracy of adjustment of the axial position of the rub bar 30 can be further improved.
N 2 The distribution range of the second positioning holes 602 on the second circumference is less than the whole circumference, so as to facilitate the processing, and every two adjacent second positioning holes 602 (wherein, the 1 st and the Nth ones are 2 The second positioning holes 602 are not considered to be adjacent) and the second point O 2 All included angles between the connecting lines are theta 2 . Wherein theta is 2 ＝θ 1+ Δ θ, which is the minimum rotational angle accuracy of the operation panel 51, is designed to be equal to θ 1 /N 2 ＝360°/N 1 /N 2 I.e. theta 2 ＝θ 1+ △θ＝(360°/N 1 +360°/N 1 /N 2 ) The screw pitch of the screw section 31 of the rubbing rod 30 is P, and the axial displacement adjustment precision of the rubbing rod 30 is P/N 1 /N 2 I.e. adjustment of axial rub-in intrusionAccuracy of P/N 1 /N 2 。
For example, in the illustrated embodiment, the number N of first positioning holes 601 in the operating panel 51 1 36, every two adjacent first positioning holes 601 and the first point O 1 Angle theta between the connecting lines 1 10 °, the number N of second positioning holes 602 in the support 20 2 10, every two adjacent second positioning holes 602 and second points O 2 Angle theta between the connecting lines 2 When the minimum rotational angle accuracy Δ θ of the operation panel 51 is 1 ° at 11 °, the axial displacement accuracy of the rub lever 30 is P/360.
Optionally, 1 st or Nth 2 A second positioning hole 602 and a second point O 2 Along a horizontal or vertical direction, to facilitate manufacturing and to calculate the rotation angle of the operating plate 51, which translates into an axial displacement of the rub bar 30.
Optionally, the first positioning hole 601 penetrates through the operating panel 51, and a plurality of scales distributed along the circumferential direction are disposed on a side of the operating panel 51 away from the support 20, where each scale corresponds to one of the first positioning holes 601 and is used for marking an angle of the corresponding first positioning hole 601, for example, one scale is disposed at intervals of 30 °, so as to determine a rotation angle of the operating panel 51 and further convert an axial displacement amount of the rubbing rod 30.
In the illustrated embodiment, the cross-section of the positioning pin 61, the first positioning hole 601 and the second positioning hole 602 is circular to facilitate manufacturing, and in other embodiments, the cross-section of the positioning pin 61, the first positioning hole 601 and the second positioning hole 602 is rectangular or triangular or other shapes.
In still other embodiments, the positioning device 60 only includes the positioning pin 61 and the first positioning hole 601, and does not include the second positioning hole 602, the first positioning hole 601 may be disposed on the operation panel 51, or may be disposed on the support 20, and a plurality of the first positioning holes 601 may be uniformly distributed on the first circumference, or may be disposed at a specific angle according to the experiment requirement.
In the illustrated embodiment, the support 20 is provided with only one threaded through hole 21, which can simulate single axial rubbing of the rotor and stator, and in other embodiments, the support 20 comprisesComprises a plurality of threaded through holes 21, the plurality of threaded through holes 21 are distributed at a third point O 3 As a circle center and a third radius R 3 On a third circumference of radius, a third point O 3 On the axis of the rotor test piece 10, third radius R 3 The numerical values of (2) and the circumferential positions of the threaded through holes 21 are set according to the test requirements, so that the axial rubbing at multiple positions can be simulated.
Optionally, the mount 20 is a bearing mounting mount for the rotor shaft 11, thereby further simplifying the structure of the rub test device 1.
In the embodiment shown in fig. 5 and 6, the rubbing body 40 and the rubbing rod 30 are integrated, that is, a specific shape, such as a hemisphere or a plane or other shape, is processed at the end of the rubbing rod 30, the rubbing rod 30 with the rubbing body 40 of different shape is replaced according to the test requirement, so that the point rubbing or the local rubbing can be simulated, and the rubbing between different materials can be simulated by replacing the rubbing rod 30 and the rubbing body 40 of different materials, so as to improve the versatility of the rubbing test device 1.
In the embodiment shown in fig. 1, the rubbing rod 30 is detachably connected to the rubbing body 40, for example, by a screw connection or a snap connection or other connection, so that it is possible to easily replace different rubbing bodies 40 without replacing the rubbing rod 30, thereby simplifying the test operation, saving materials, facilitating the manufacturing and reducing the cost.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, any modification, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention, all without departing from the content of the technical solution of the present invention, fall within the scope of protection defined by the claims of the present invention.
Claims (12)
1. Rub test device bumps and rubs for aeroengine's rotor stator is bumped and is rubbed the experiment, it includes rotor test piece and the body that rubs to bump the test device that rubs, its characterized in that, it still includes to bump the test device that rubs:
the support is connected with the rotor test piece and comprises a threaded through hole, and the axis of the threaded through hole is parallel to the axis of the rotor test piece;
the friction rod is in threaded connection with the threaded through hole, and one end of the friction rod is connected with the friction body;
the feeding device is connected with the rubbing rod and is used for driving the rubbing rod to rotate so as to change the axial position of the rubbing rod;
and the positioning device is used for locking the axial position of the rubbing rod.
2. The rub test device of claim 1, wherein the feeder device includes an operating plate, the positioning device includes a positioning pin and a plurality of first positioning holes disposed in one of the support and the operating plate and distributed on a first circumference centered on a first point located on the axis of the rub lever, the positioning pin includes axially opposite first and second ends, the first end is adapted to be inserted into one of the first positioning holes, and the second end is adapted to be coupled to the other of the support and the operating plate to lock the relative position of the operating plate to the support.
3. The rub test device of claim 2, wherein the first plurality of locating holes are evenly distributed about the first circumference.
4. The rub impact test device according to claim 2, wherein the positioning device further comprises a plurality of second positioning holes for inserting the second ends of the positioning pins, the second positioning holes being disposed in the other of the holder and the operating plate and distributed on a second circumference centered on a second point located on the axis of the rub impact bar.
5. The rub-impact test kit of claim 4Characterized in that the number of the first positioning holes is N 1 And are uniformly distributed on the first circumference, and the number of the second positioning holes is N 2 The distribution range of the second positioning holes on the second circumference is smaller than the whole circumference, and the included angle between the connecting lines of every two adjacent second positioning holes and the second point is (360 degrees/N) 1 +360°/N 1 /N 2 )。
6. The rub test device according to claim 5, wherein a line connecting the first or last one of the first positioning holes and the second point is in a horizontal direction or a vertical direction.
7. The rub test device according to any one of claims 2 to 6, wherein the rub bodies and the operating plate are respectively connected to both axial ends of the rub rod.
8. The rub impact test device of claim 7, wherein the first positioning holes extend through the operating plate, the operating plate is provided with a plurality of circumferentially-distributed scales on a side away from the support, each scale corresponds to one of the first positioning holes, and the scales are used for marking an angle of the corresponding first positioning hole.
9. The rub impact test device according to any one of claims 2 to 6, further comprising two lock nuts, each of the two lock nuts being threadedly coupled to the rub impact rod and located on both axial sides of the operating plate, for locking the relative positions of the operating plate and the rub impact rod.
10. The rub test device according to any one of claims 1 to 6, wherein the mount includes a plurality of the threaded through holes distributed on a third circumference centered on a third point located on an axis of the rotor test piece.
11. The rub test device according to any one of claims 1 to 6, wherein the rub bar is removably coupled to the rub body.
12. The rub impact test apparatus according to any one of claims 1 to 6, wherein the mount is a bearing mounting mount of the rotor test piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221392640.8U CN217442852U (en) | 2022-06-06 | 2022-06-06 | Rub-impact test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221392640.8U CN217442852U (en) | 2022-06-06 | 2022-06-06 | Rub-impact test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217442852U true CN217442852U (en) | 2022-09-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221392640.8U Active CN217442852U (en) | 2022-06-06 | 2022-06-06 | Rub-impact test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217442852U (en) |
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2022
- 2022-06-06 CN CN202221392640.8U patent/CN217442852U/en active Active
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