CN112128147A - Simply-assembled reusable balancing device and assembling method - Google Patents
Simply-assembled reusable balancing device and assembling method Download PDFInfo
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- CN112128147A CN112128147A CN202011106869.6A CN202011106869A CN112128147A CN 112128147 A CN112128147 A CN 112128147A CN 202011106869 A CN202011106869 A CN 202011106869A CN 112128147 A CN112128147 A CN 112128147A
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- ball
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- balancing
- balance
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/662—Balancing of rotors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Testing Of Balance (AREA)
Abstract
The invention provides a simply-assembled reusable balancing device which comprises a rotor blade disc (1) and a balancing block assembly, wherein the balancing block assembly comprises a balancing block cap cover (2), a spring (3), an amplitude limiter (4), a ball I (5), a ball II (7) and a balancing block main body (6). The rotor balance block is designed into a non-threaded structure, and the assembly and the disassembly of the balance block can be completed by adopting a simple tool, so that the assembly performance of the rotor balance block is improved.
Description
Technical Field
The invention belongs to the field of design of an aircraft engine compressor, and particularly relates to a balancing device which is simple in assembly and can be used repeatedly.
Background
The core engine is a vital core component of the aircraft engine and is in a three-high (high-temperature, high-pressure and high-rotating-speed) working environment, and the quality of the working state of the core engine can have great influence on the whole engine. And the stable operation of the rotor of the core machine is the basic guarantee of the safe operation of the engine. The introduction of an imbalance in the rotor of the engine is a major cause of rotor vibration.
The rotor balancing means is various, such as removing redundant materials, or adding balance blocks and the like.
In the actual use process of the engine, the engine is influenced by the use state, the balance state of the rotor of the engine is continuously deteriorated, regular maintenance is needed, and the dynamic balance of the rotor is carried out again, so that the rotor needs to undergo a plurality of times of balance work. Meanwhile, the times of dismounting and mounting the fasteners are limited, and when a certain dismounting and mounting times is reached, the fasteners need to be replaced by new fasteners so as to ensure the reliable connection of the rotors and cause great waste. The existing balancing device is formed by matching a screw and a locking plate with a balancing block main body, the locking plate needs to be deformed to lock the screw in the using process, and the screw is connected with the balancing block main body through threads; when the balancing device is disassembled and assembled, the deformation shape and the threads of the locking plate are changed, and the rotor balancing result is influenced after the balancing device is installed again, so that the balancing device cannot be used repeatedly.
Disclosure of Invention
The purpose of the invention is as follows: the utility model provides a simple and easy assembly repeatedly usable balancing unit designs into non-threaded structure with the rotor balancing piece, adopts simple and easy frock can accomplish the assembly and the decomposition of balancing piece, has improved the assembly nature of rotor balancing piece.
The technical scheme of the invention is as follows: on one hand, the balancing device which is simple in assembly and can be used repeatedly is provided, and comprises a rotor blade disc 1 and a balancing block assembly, wherein the balancing block assembly comprises a balancing block cap cover 2, a spring 3, an amplitude limiter 4, a ball I5, a ball II 7 and a balancing block main body 6;
the balance block cap cover 2 is of a cylindrical structure with a counter bore, a first through hole is formed in the balance block cap cover 2, and a ball socket 25 is arranged at the intersection of the first through hole and the counter bore; a channel is arranged on the balance block cap cover 2 in a direction perpendicular to the first through hole;
the balance weight main body 6 is of a cylindrical structure, and a second through hole is formed in the fixed end of the balance weight main body 6; mounting through holes are formed in the circumferential direction of the rotor blade disc 1;
the fixed end of the balance weight main body 6 passes through the installation through hole and is contacted with the surface of the counter bore of the balance weight cap cover 2; the first through hole of the balance weight cap cover 2 is coaxial with the second through hole of the balance weight main body 6, and the spring 3 is arranged in the first through hole and the second through hole in a penetrating manner; two ends of the spring 3 are respectively contacted with the ball I5 and the ball II 7; the ball I5 and the ball II 7 are positioned in two opposite ball sockets; when the balance device is assembled, after the balance block cap cover 2 is rotated, the ball I5 or the ball II 7 rolls to a ball socket through a channel arranged on the balance block cap cover 2;
the amplitude limiter 4 is located in the spring 3 and used for limiting the balls I5 and the balls II 7 in the length direction of the spring.
Optionally, the mounting end 60 of the weight body 6 is provided with a stop plane for preventing the weight body 6 from rotating.
Optionally, the diameter of the first through hole is not more than two thirds of the diameter of the balls I5 and II 7, so as to prevent the balls from falling off when the rotor moves.
Optionally, the diameter of the ball socket 25 is not less than one half of the diameter of the balls I5 and II 7 and not more than two thirds of the diameter of the balls I5 and II 7 so as to limit the balls.
Optionally, the height dimension of the amplitude limiter 4 is smaller than the difference between the inner diameter of the counter bore of the balance weight cap 2 and the spherical diameter of the ball I5; the ball I5 and the ball II 7 are the same in size.
Optionally, the first through hole has the same aperture as the second through hole.
In another aspect, there is provided an assembling method of a rotor balancing apparatus using the balancing apparatus as described above, the assembling method including:
the fixed end of the balance weight main body 6 penetrates through the mounting through hole of the rotor blade disc 1, and the mounting end of the balance weight main body 6 is limited on one side of the rotor blade disc 1; the spring 3 is arranged in the second through hole, and the ball I5 and the ball II 7 are positioned at two ends of the spring 3 and in the channel;
and rotating the balance weight cap cover 2 to enable the balls I5 and the balls II 7 to roll to the ball socket from the groove channel, enabling the spring 3 to be in an extension state, and enabling the balance weight main body 6 to be connected with the balance weight cap cover 2.
Optionally, a stop surface on the mounting end of the counterweight body 6 contacts the rotor blisk 1, preventing the counterweight body 6 from rotating when the rotor is in motion.
The invention has the beneficial effects that: the structural design fundamentally solves the problems that in the rotor balancing process, the process is complicated when the balance block needs to be decomposed for multiple times, the working efficiency is low, and the balance block can damage related components of the rotor in the assembling and decomposing processes; meanwhile, the influence of mass center offset of the balance weight and locking of the locking plate on the unbalance is avoided; the rotor balancing efficiency is improved. More importantly, the method for solving the problems provides reference for future design work.
The invention simplifies the rotor balancing process, saves the balancing period, improves the working efficiency and solves the practical problems encountered in balancing. The balance precision is improved, and a good foundation is laid for later use of the compressor rotor.
Drawings
FIG. 1 is a schematic view of the balancing apparatus after assembly;
FIG. 2 is a schematic view of a main body of the counterbalance;
FIG. 3 is a schematic view of a weight cap.
Detailed Description
The present invention will be described in further detail below by way of specific embodiments:
the balance block main body is installed on the basis of the installation hole structure of the rotor disk rim installation edge balance structure, and the balance structure does not need to be redesigned. The installation, the decomposition of carrying out the balancing piece that can convenient and fast, the characteristic of balancing piece does not change, the reflection rotor balanced state that can be accurate, assurance balance precision under balanced process and in-service use state. The structure is a self-locking structure, and other locking devices such as locking plates are not needed, so that safety risks are avoided in the locking process.
Example 1:
in this embodiment, fig. 1 is a schematic diagram of a balancing apparatus after assembly, and as shown in fig. 1, a simple-assembly reusable balancing apparatus is provided, where the balancing apparatus includes a rotor blade disc 1 and a balancing mass assembly, and the balancing mass assembly includes a balancing mass cap 2, a spring 3, a limiter 4, a ball i 5, a ball ii 7, and a balancing mass main body 6;
fig. 3 is a schematic structural diagram of the weight cap, and as shown in fig. 3, the weight cap 2 is a cylindrical structure with a counterbore, wherein the left drawing is a top view, and the right drawing is a cross-sectional view a-a. A first through hole is formed in the balance block cap cover 2, and a ball socket is arranged at the intersection of the first through hole and the counter bore; the balance weight cap 2 is provided with a channel vertical to the direction of the first through hole.
Fig. 2 is a schematic structural view of the balance weight main body, as shown in fig. 2, the balance weight main body 6 is a cylindrical structure, and a fixed end of the balance weight main body 6 is provided with a second through hole; the circumferential direction of the rotor blade disc 1 is provided with a mounting through hole.
In the embodiment, the fixed end of the balance weight main body 6 passes through the installation through hole and contacts with the surface of the counter bore of the balance weight cap 2; the first through hole of the balance weight cap cover 2 is coaxial with the second through hole of the balance weight main body 6, and the spring 3 is arranged in the first through hole and the second through hole in a penetrating manner; two ends of the spring 3 are respectively contacted with the ball I5 and the ball II 7; the ball I5 and the ball II 7 are both positioned in the ball socket; when the balancing device is assembled, the balls I5 or II 7 roll into the ball socket 25 via the groove provided on the balancing weight cap 2.
The amplitude limiter 4 is located in the spring 3 and used for limiting the balls I5 and the balls II 7 in the length direction of the spring.
In the present embodiment, as shown in fig. 2, the mounting end 60 of the weight body 6 is provided with a stopper plane for preventing the weight body 6 from rotating. The diameter size of the first through hole is not more than two thirds of the diameter sizes of the balls I5 and the balls II 7, so that the balls are prevented from falling off when the rotor moves. The diameter size of the ball socket is not less than one half of the diameter sizes of the balls I5 and II 7 and not more than two thirds of the diameter sizes of the balls I5 and II 7 so as to limit the balls. The first through hole and the second through hole have the same aperture. Further, the height dimension of the amplitude limiter 4 is smaller than the difference between the inner diameter of the counter bore of the balance weight cap 2 and the spherical diameter of the ball I5. In this embodiment, the balls I5 and II 7 are the same size.
In this embodiment, the height and size of the limiter are limited based on meeting the assembly requirements, and at the same time, ensuring that the ball does not fall off in the ball socket in the state of spring failure or extreme compression. The ball socket size limitation ensures that at least one half of the ball falls into the ball socket, and ensures that the ball does not generate relative displacement with the ball socket in the ball socket during the high-speed rotation of the rotor.
Example 2
In this embodiment, there is provided an assembling method of a rotor balancing apparatus, using the balancing apparatus as described above, the assembling method including:
the fixed end of the balance weight main body 6 penetrates through the mounting through hole of the rotor blade disc 1, and the mounting end of the balance weight main body 6 is limited on one side of the rotor blade disc 1; the spring 3 is arranged in the second through hole, and the ball I5 and the ball II 7 are positioned at two ends of the spring 3 and in the channel;
the balance weight cap 2 is rotated to enable the balls I5 and II 7 to roll to the ball socket 25 from the groove channel, the spring 3 is in an extension state, and the balance weight main body 6 is connected with the balance weight cap 2.
Further, a stop plane on the mounting end of the weight body 6 contacts the rotor disk 1, preventing the weight body 6 from rotating when the rotor is moving.
This embodiment, the channel design is used for the ball to assemble in place, because stop device does not have the deformation demand, can change the cap according to weight needs wantonly among the balanced process, avoids traditional balance to choose for use other plastic materials to substitute the deviation that the balancing weight caused because the barycenter is different, ensures that balanced result is more accurate.
Claims (8)
1. The balancing device is simple in assembly and capable of being used repeatedly, and is characterized by comprising a rotor blade disc (1) and a balancing block assembly, wherein the balancing block assembly comprises a balancing block cap cover (2), a spring (3), an amplitude limiter (4), a ball I (5), a ball II (7) and a balancing block main body (6);
the balance block cap cover (2) is of a cylindrical structure with a counter bore, a first through hole is formed in the balance block cap cover (2), and a ball socket (25) is arranged at the position where the first through hole and the counter bore intersect; a channel is arranged on the balance block cap cover (2) and is vertical to the direction of the first through hole;
the balance block main body (6) is of a cylindrical structure, and a second through hole is formed in the fixed end of the balance block main body (6); mounting through holes are formed in the circumferential direction of the rotor blade disc (1);
the fixed end of the balance weight main body (6) penetrates through the mounting through hole and is in contact with the surface of the counter bore of the balance weight cap cover (2); the first through hole of the balance block cap cover (2) is coaxial with the second through hole of the balance block main body (6), and the spring (3) is arranged in the first through hole and the second through hole in a penetrating manner; two ends of the spring (3) are respectively contacted with the ball I (5) and the ball II (7); the ball I (5) and the ball II (7) are positioned in the two opposite ball sockets; when the balance device is assembled, after the balance block cap cover (2) is rotated, the ball I (5) or the ball II (7) rolls to a ball socket through a channel arranged on the balance block cap cover (2);
the amplitude limiter (4) is positioned in the spring (3) and used for limiting the balls I (5) and the balls II (7) in the length direction of the spring.
2. The balancing apparatus according to claim 1, wherein the mounting end (60) of the weight body (6) is provided with a stop plane for preventing the weight body (6) from rotating.
3. A balancing device according to claim 1, wherein the first through-hole has a diameter of no more than two thirds of the diameter of the balls i (5) and ii (7) for preventing the balls from falling out during movement of the rotor.
4. Balancing device according to claim 1, characterized in that the diameter of the socket (25) is no less than half and no more than two thirds of the diameter of the balls i (5) and ii (7) in order to limit the ball.
5. The balancing device according to claim 1, characterized in that the height dimension of the limiter (4) is smaller than the difference between the inner diameter of the counter bore of the balancing mass cap (2) and the spherical diameter of the ball i (5); the ball I (5) and the ball II (7) are the same in size.
6. The balancing apparatus of claim 1, wherein the first through hole has the same diameter as the second through hole.
7. A method of assembling a rotor balancing device using the balancing device according to any one of claims 1 to 6, comprising:
the fixed end of the balance weight main body (6) penetrates through the mounting through hole of the rotor blade disc (1), and the mounting end of the balance weight main body (6) is limited on one side of the rotor blade disc (1); the spring (3) is arranged in the second through hole, and the ball I (5) and the ball II (7) are positioned at two ends of the spring (3) and in the channel;
and rotating the balance weight cap cover (2) to enable the balls I (5) and the balls II (7) to roll to the ball socket from the groove channel, enabling the spring (3) to be in an extension state, and enabling the balance weight main body (6) to be connected with the balance weight cap cover (2).
8. The assembly method according to claim 7, wherein a stop surface on the mounting end of the counterweight body (6) contacts the rotor disk (1) to prevent the counterweight body (6) from rotating when the rotor is in motion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011106869.6A CN112128147B (en) | 2020-10-16 | 2020-10-16 | Simply-assembled reusable balancing device and assembling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011106869.6A CN112128147B (en) | 2020-10-16 | 2020-10-16 | Simply-assembled reusable balancing device and assembling method |
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| Publication Number | Publication Date |
|---|---|
| CN112128147A true CN112128147A (en) | 2020-12-25 |
| CN112128147B CN112128147B (en) | 2022-08-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011106869.6A Active CN112128147B (en) | 2020-10-16 | 2020-10-16 | Simply-assembled reusable balancing device and assembling method |
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| CN (1) | CN112128147B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1256486A (en) * | 1969-04-02 | 1971-12-08 | ||
| CN1077283A (en) * | 1993-03-12 | 1993-10-13 | 浙江大学 | Electromagnetic self-balancing head |
| CN204164152U (en) * | 2014-10-13 | 2015-02-18 | 上虞市通特锻造有限公司 | A kind of new type crank |
| CN204182814U (en) * | 2014-10-29 | 2015-03-04 | 重庆智锐德科技有限公司 | Material grasping hook feed mechanism |
| CN205001254U (en) * | 2015-09-29 | 2016-01-27 | 中航商用航空发动机有限责任公司 | Rotor blade dish, compressor and aeroengine |
| CN206360724U (en) * | 2016-12-14 | 2017-07-28 | 中国燃气涡轮研究院 | Aeroengine rotor counterweight block structure |
| CN108252961A (en) * | 2017-12-28 | 2018-07-06 | 中国航发四川燃气涡轮研究院 | A kind of axial thrust balancing devices for axial flow compressor performance test |
| CN210550736U (en) * | 2019-09-28 | 2020-05-19 | 周渝枫 | Multifunctional bolt wrench for automobile maintenance |
-
2020
- 2020-10-16 CN CN202011106869.6A patent/CN112128147B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1256486A (en) * | 1969-04-02 | 1971-12-08 | ||
| CN1077283A (en) * | 1993-03-12 | 1993-10-13 | 浙江大学 | Electromagnetic self-balancing head |
| CN204164152U (en) * | 2014-10-13 | 2015-02-18 | 上虞市通特锻造有限公司 | A kind of new type crank |
| CN204182814U (en) * | 2014-10-29 | 2015-03-04 | 重庆智锐德科技有限公司 | Material grasping hook feed mechanism |
| CN205001254U (en) * | 2015-09-29 | 2016-01-27 | 中航商用航空发动机有限责任公司 | Rotor blade dish, compressor and aeroengine |
| CN206360724U (en) * | 2016-12-14 | 2017-07-28 | 中国燃气涡轮研究院 | Aeroengine rotor counterweight block structure |
| CN108252961A (en) * | 2017-12-28 | 2018-07-06 | 中国航发四川燃气涡轮研究院 | A kind of axial thrust balancing devices for axial flow compressor performance test |
| CN210550736U (en) * | 2019-09-28 | 2020-05-19 | 周渝枫 | Multifunctional bolt wrench for automobile maintenance |
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| Publication number | Publication date |
|---|---|
| CN112128147B (en) | 2022-08-05 |
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