CN113375861A - Support for dynamic balance detection of rotor part of micro turbojet engine - Google Patents
Support for dynamic balance detection of rotor part of micro turbojet engine Download PDFInfo
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- CN113375861A CN113375861A CN202110838381.0A CN202110838381A CN113375861A CN 113375861 A CN113375861 A CN 113375861A CN 202110838381 A CN202110838381 A CN 202110838381A CN 113375861 A CN113375861 A CN 113375861A
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- support
- tightening belt
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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
- G01M1/00—Testing static or dynamic balance of machines or structures
- G01M1/02—Details of balancing machines or devices
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Abstract
The invention relates to a support for detecting dynamic balance of a rotor part of a micro turbojet engine, which comprises a pair of support seats and a positioning support movably and telescopically arranged on the support seats, wherein the rotor part is supported and arranged in an engine shell through a bearing, and the engine shell is supported and arranged on the positioning support; the pre-tightening belt support is arranged between the pair of support seats and is coaxial with the support seats; the pre-tightening belt support is provided with a pair of pre-tightening belt buckles for fixing the pre-tightening belt, the pre-tightening belt is tightly pressed on the engine shell, and two ends of the pre-tightening belt are respectively fixed on the pre-tightening belt buckles; the bracket base and the pre-tightening belt support are both fixedly arranged on the balance detection platform. The rotor component dynamic balance adjusting device has strong universality and convenient adjustment and use, and can meet the dynamic balance requirements of rotor components of miniature turbojet engines with different models and different external dimensions.
Description
Technical Field
The invention relates to the technical field of detection of a miniature turbojet engine, in particular to a dynamic balance detection device for a rotor component of the miniature turbojet engine.
Background
The micro turbojet engine has high rotating speed, the rotating speed range is from 4 to 16 thousands of revolutions, if the unbalance amount of the rotor part is large when the rotor part rotates, the vibration of the engine is increased under high rotating speed, the noise is increased, the bearing is damaged when the bearing is serious, the service life of the engine is shortened, and even the engine is directly damaged. Therefore, rotor dynamic balancing is a very important step in engine assembly.
The mounting bracket of conventional rotor dynamic balance equipment is designed and manufactured aiming at a specific engine, a special mounting bracket is arranged on one type of engine, the mounting bracket needs to be detached and replaced when rotor components of engines of different types are in dynamic balance, the universality is poor, and the dynamic balance precision is easily reduced due to frequent detachment.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides the support for the dynamic balance detection of the rotor part of the micro turbojet engine, which has the advantages of simple structure, strong universality and convenience in adjustment and use, and can meet the dynamic balance requirements of the rotor parts of the micro turbojet engines with different models and different external dimensions.
In order to achieve the purpose, the invention adopts the technical scheme that: a support for detecting dynamic balance of a rotor part of a micro turbojet engine comprises a pair of support seats and a positioning support which is movably and telescopically arranged on the support seats, wherein the rotor part is supported and arranged in an engine shell through a bearing, and the engine shell is supported and arranged on the positioning support;
the pre-tightening belt support is arranged between the pair of support seats and is coaxial with the support seats; the pre-tightening belt support is provided with a pair of pre-tightening belt buckles for fixing the pre-tightening belt, the pre-tightening belt is tightly pressed on the engine shell, and two ends of the pre-tightening belt are respectively fixed on the pre-tightening belt buckles;
the pair of support seats and the positioning support are erected at two end parts of the engine shell, the pre-tightening belt support between the pair of support seats is not in contact with the engine shell and is arranged at the central position of the engine shell, and the support seats and the pre-tightening belt support are fixedly arranged on the balance detection platform.
Furthermore, a pair of support rods is vertically arranged on the support seat, elongated sliding holes are longitudinally and symmetrically arranged on the pair of support rods, fixing holes corresponding to the elongated sliding holes are formed in the positioning support, and bolts penetrate through the elongated sliding holes to be fixed in the fixing holes and are used for fixing the position of the positioning support on the support rods.
Furthermore, a sliding block is arranged between the pair of fixing holes of the positioning support, and the width of the sliding block is matched with the distance between the pair of supporting rods.
Furthermore, the support base comprises a first bottom plate and a vertical plate, the first bottom plate is parallel to the balance detection platform, the vertical plate is perpendicular to the first bottom plate, the section of the support base is in an inverted T shape, the pair of supporting rods are fixedly arranged on the vertical plate, and the support base is fixedly connected to the balance detection platform through the bottom plate.
Furthermore, the pre-tightening belt support is a U-shaped support formed by a second bottom plate and two side plates, the second bottom plate is arranged in parallel with the balance detection platform, and the two side plates are vertically arranged on the second bottom plate; the pre-tightening belt support is fixedly connected with the balance detection platform through a second bottom plate;
the pre-tightening belt buckle is an L-shaped clamping piece consisting of two mutually perpendicular clamping plates, and one clamping plate of the pre-tightening belt buckle is arranged on the outer side surfaces of two side plates of the pre-tightening belt support through bolts.
Furthermore, a triangular support for increasing the support stability is arranged between the second bottom plate and the two side plates, one vertical edge of the triangular support is fixedly connected to the second bottom plate, and the other vertical edge of the triangular support is fixedly connected to the two side plates.
Furthermore, a long strip adjusting hole of the vertical balance detection platform is formed in a clamping plate connected with the pre-tightening belt buckle and the pre-tightening belt support, and a bolt penetrates through the long strip adjusting hole to be fixedly connected to two side plates of the pre-tightening belt support, so that the pre-tightening belt support is buckled on the pre-tightening belt support seat to move up and down to adjust the pre-tightening force of the pre-tightening belt.
Furthermore, a triangular support for improving the support stability is arranged between two mutually vertical clamping plates of the pre-tightening buckle, and two vertical edges of the triangular support are fixedly connected to the two mutually vertical clamping plates respectively.
Furthermore, the contact surface of the positioning support and the engine shell is V-shaped, and the angle formed by two sides of the V-shaped contact surface is 90-120 degrees, so that the dynamic balance requirement of a rotor component with the diameter of 60-260 mm can be met.
The invention has the beneficial effects that: the dynamic balance mounting bracket for the rotor of the micro turbojet engine provided by the invention has strong universality and is convenient to adjust and use, the dynamic balance requirements of the rotor components of the micro turbojet engines with different models and different external dimensions can be met, and when the dynamic balance mounting bracket is used, the distance between the rotor component bracket seats and the height of the rotor component bracket are adjusted according to the length dimension and the diameter of the rotor component, and then the rotor component is fixed by using the elastic band, so that the high-speed dynamic balance can be carried out on the rotor component.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a stand base and positioning stand according to the present invention;
FIG. 3 is a schematic view of another alternative support base and positioning support of the present invention;
FIG. 4 is a schematic diagram of the construction of the pretensioner belt support of the present invention.
Shown in the figure: 1. a support base; 11. a strut; 12. a strip-shaped sliding hole; 13. a first base plate; 14. a vertical plate; 2. a first screw; 3. a position adjusting bracket; 31. a fixing hole; 32. a slider; 4. pre-tightening the belt bracket buckle; 41. a strip adjustment aperture; 42. a triangular support; 5. pre-tightening the belt support; 51. a second base plate; 52. a side plate; 53. a triangular support; 6. a second screw; 7. an engine housing; 8. and pre-tightening the belt.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
Example 1: as shown in fig. 1, 2, 3 and 4, a support for detecting the dynamic balance of a rotor component of a micro turbojet engine comprises a pair of support bases 1 and a positioning support 3 movably and telescopically arranged on the support bases 1, wherein the rotor component is supported and arranged in an engine housing 7 through a bearing, and the engine housing 7 is supported and arranged on the positioning support 3; the support device further comprises a pre-tightening belt support 5, wherein the pre-tightening belt support 5 is arranged between the pair of support bases 1 and is coaxial with the support bases 1; the pre-tightening belt support 5 is provided with a pair of pre-tightening belt buckles 4 for fixing pre-tightening belts 8, the pre-tightening belts 8 are tightly pressed on the engine shell 7, and two ends of each pre-tightening belt 8 are respectively fixed on the pre-tightening belt buckles 4; the pair of support seats 1 and the positioning support 3 are erected at two end parts of an engine shell 7, a pre-tightening belt support 5 between the pair of support seats 1 is not in contact with the engine shell 7 and is arranged at the central position of the engine shell 7, and the support seats 1 and the pre-tightening belt support 5 are fixedly arranged on a balance detection platform.
The bracket base 1 comprises a first bottom plate 13 and a vertical plate 14, wherein the first bottom plate 13 is arranged in parallel with the balance detection platform, the vertical plate 14 is perpendicular to the first bottom plate 13, the section of the bracket base 1 is in an inverted T shape, a pair of supporting rods 11 are fixedly arranged on the vertical plate 14, and the bracket base 1 is fixedly connected to the balance detection platform through the bottom plate 13. The vertical plate 14 is vertically provided with a pair of support rods 11, the pair of support rods 11 are longitudinally and symmetrically provided with elongated sliding holes 12, the positioning support 3 is provided with fixing holes 31 corresponding to the elongated sliding holes 12, and the first screws 2 penetrate through the elongated sliding holes 12 and are fixed in the fixing holes 31 and used for fixing the positions of the positioning support 3 on the support rods 11. A sliding block 32 is arranged between the pair of fixing holes 31 of the positioning support 3, and the width of the sliding block 32 is matched with the distance between the pair of supporting rods 11, so that the positioning support 3 can stably slide, and the supporting friction force and the stability are increased.
The pre-tightening belt support 5 is a U-shaped support formed by a second bottom plate 51 and two side plates 52, the second bottom plate 51 is arranged in parallel with the balance detection platform, and the two side plates 52 are vertically arranged on the second bottom plate 51; the pre-tightening belt support 5 is fixedly connected with the balance detection platform through a second bottom plate 51; a triangular support 53 for increasing the support stability is arranged between the second bottom plate 51 and the two side plates 52, one vertical edge of the triangular support 53 is fixedly connected to the second bottom plate 51, and the other vertical edge is fixedly connected to the two side plates 52.
The pre-tightening belt buckle 4 is an L-shaped clamping piece consisting of two mutually perpendicular clamping plates, and one clamping plate of the pre-tightening belt buckle 4 is arranged on the outer side surfaces of the two side plates 52 of the pre-tightening belt support 5 through a second screw 6. The clamping plate connected with the pre-tightening belt buckle 4 and the pre-tightening belt support 5 is provided with a strip adjusting hole 41 of a vertical balance detection platform, and the second screw 6 penetrates through the strip adjusting hole 41 to be fixedly connected to the two side plates 52 of the pre-tightening belt support 5, so that the pre-tightening belt support buckle 4 moves up and down on the pre-tightening belt support 5 to adjust the pre-tightening force of the pre-tightening belt 8. A triangular support 42 for increasing the support stability is arranged between two mutually vertical clamping plates of the pre-tightening buckle 4, and two vertical edges of the triangular support 42 are respectively fixedly connected to the two mutually vertical clamping plates.
The contact surface of the positioning support 3 and the engine shell 7 is V-shaped, and the angle formed by two sides of the V-shaped contact surface is 90-120 degrees, so that the dynamic balance requirement of a rotor component with the diameter of 60-260 mm can be met.
According to the dynamic balance mounting bracket for the rotor of the micro turbojet engine, when the rotor part 7 of the micro turbojet engine needs to be subjected to dynamic balance as shown in figure 1, the distance between two rotor part bracket bases 1 and the position of a pretightening belt bracket base 5 are adjusted according to the length of an engine shell 7 when the micro turbojet engine is subjected to dynamic balance. And then, the engine housing 7 with the rotor parts arranged therein is placed on the two rotor part brackets 3, and the upper and lower positions of the rotor part brackets are adjusted according to the difference of the rotor diameters at the positions of the two supporting points, so that the horizontal arrangement of the engine housing 7 is ensured. After the adjustment is finished, one end of a circular elastic band 8 is hooked on one pre-tightening band bracket buckle 4, and then the circular elastic band is wound on the rotor component and then hooked on the pre-tightening band bracket buckle 4 at the other end to fix the rotor component, so that the installation work before the dynamic balance of the rotor component is finished. Simple structure, the adjustment step is few, and need not to dismantle can be suitable for the rotor part of multiple size.
Example 2, the same as example 1, except that: the contact surface of the positioning support 3 and the engine shell 7 is V-shaped, and the angle formed by two sides of the V-shaped contact surface is 120 degrees, so that the positioning support is more suitable for the sizes of the shells of various types of micro turbojet engines.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. The support for detecting the dynamic balance of the rotor part of the micro turbojet engine is characterized by comprising a pair of support seats (1) and a positioning support (3) movably and telescopically arranged on the support seats (1), wherein the rotor part is supported and arranged in an engine shell (7) through a bearing, and the engine shell (7) is supported and arranged on the positioning support (3);
the support device is characterized by further comprising a pre-tightening belt support (5), wherein the pre-tightening belt support (5) is arranged between the pair of support bases (1) and is coaxial with the support bases (1); the pre-tightening belt support (5) is provided with a pair of pre-tightening belt buckles (4) used for fixing the pre-tightening belt (8), the pre-tightening belt (8) is pressed on the engine shell (7), and two ends of the pre-tightening belt (8) are respectively fixed on the pre-tightening belt buckles (4);
the pair of support seats (1) and the positioning support (3) are erected at two end parts of the engine shell (7), the pre-tightening belt support (5) between the pair of support seats (1) is not in contact with the engine shell (7) and is arranged at the center of the engine shell (7), and the support seats (1) and the pre-tightening belt support (5) are fixedly arranged on the balance detection platform.
2. The support for detecting the dynamic balance of the rotor component of the micro turbojet engine according to claim 1, wherein a pair of support rods (11) are vertically arranged on the support base (1), the pair of support rods (11) are longitudinally and symmetrically provided with elongated sliding holes (12), the positioning support (3) is provided with fixing holes (31) corresponding to the elongated sliding holes (12), and the first screws (2) penetrate through the elongated sliding holes (12) and are fixed in the fixing holes (31) for fixing the position of the positioning support (3) on the support rods (11).
3. The support for detecting the dynamic balance of the rotor component of the micro turbojet engine as claimed in claim 2, wherein a slide block (32) is arranged between the pair of fixing holes (31) of the positioning support (3), and the width of the slide block (32) is matched with the distance between the pair of support rods (11).
4. The support for detecting the dynamic balance of the rotor component of the micro turbojet engine as claimed in claim 2, wherein the support base (1) comprises a first base plate (13) arranged parallel to the balance detection platform and a vertical plate (14) perpendicular to the first base plate (13), so that the cross section of the support base (1) forms an inverted T shape, the pair of support rods (11) are fixedly arranged on the vertical plate (14), and the support base (1) is fixedly connected to the balance detection platform through the base plate (13).
5. The support for detecting the dynamic balance of the rotor component of the micro turbojet engine according to claim 1, wherein the pre-tightening belt support (5) is a U-shaped support formed by a second bottom plate (51) and two side plates (52), the second bottom plate (51) is arranged in parallel with the balance detection platform, and the two side plates (52) are vertically arranged on the second bottom plate (51); the pre-tightening belt support (5) is fixedly connected with the balance detection platform through a second bottom plate (51);
the pre-tightening belt buckle (4) is an L-shaped clamping piece consisting of two clamping plates which are perpendicular to each other, and one clamping plate of the pre-tightening belt buckle (4) is arranged on the outer side surfaces of the two side plates (52) of the pre-tightening belt support (5) through a second screw (6).
6. The support for detecting the dynamic balance of the rotor component of the micro turbojet engine according to claim 5, wherein a triangular support (53) for increasing the support stability is arranged between the second base plate (51) and the two side plates (52), and one vertical edge of the triangular support (53) is fixedly connected to the second base plate (51) and the other vertical edge of the triangular support is fixedly connected to the two side plates (52).
7. The support for detecting the dynamic balance of the rotor component of the micro turbojet engine according to claim 5, wherein a strip adjusting hole (41) perpendicular to the balance detection platform is formed in a clamping plate connecting the pre-tightening buckle (4) and the pre-tightening belt support (5), and the second screw (6) penetrates through the strip adjusting hole (41) and is fixedly connected to two side plates (52) of the pre-tightening belt support (5), so that the pre-tightening belt support buckle (4) moves up and down on the pre-tightening belt support (5) to adjust the pre-tightening force of the pre-tightening belt.
8. The support for detecting the dynamic balance of the rotor component of the micro turbojet engine according to claim 5, wherein a triangular support (42) for increasing the support stability is arranged between the two mutually perpendicular clamping plates of the pre-tightening buckle (4), and two vertical edges of the triangular support (42) are respectively fixedly connected to the two mutually perpendicular clamping plates.
9. The support for detecting the dynamic balance of the rotor component of the micro turbojet engine according to any of claims 1 to 8, wherein the contact surface of the positioning support (3) and the engine housing (7) is V-shaped, and the angle formed by two sides of the V-shaped contact surface is 90-120 degrees so as to meet the dynamic balance requirement of the rotor component with the diameter of 60-260 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110838381.0A CN113375861A (en) | 2021-07-23 | 2021-07-23 | Support for dynamic balance detection of rotor part of micro turbojet engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110838381.0A CN113375861A (en) | 2021-07-23 | 2021-07-23 | Support for dynamic balance detection of rotor part of micro turbojet engine |
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| Publication Number | Publication Date |
|---|---|
| CN113375861A true CN113375861A (en) | 2021-09-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110838381.0A Pending CN113375861A (en) | 2021-07-23 | 2021-07-23 | Support for dynamic balance detection of rotor part of micro turbojet engine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114323443A (en) * | 2021-11-30 | 2022-04-12 | 南京航空航天大学 | Reusable dynamic balance experiment platform and experiment method for engine rotor |
-
2021
- 2021-07-23 CN CN202110838381.0A patent/CN113375861A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114323443A (en) * | 2021-11-30 | 2022-04-12 | 南京航空航天大学 | Reusable dynamic balance experiment platform and experiment method for engine rotor |
| CN114323443B (en) * | 2021-11-30 | 2022-10-18 | 南京航空航天大学 | Reusable dynamic balance experiment platform and experiment method for engine rotor |
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