CN215847903U - Disassembling and assembling tool and switching tool thereof - Google Patents
Disassembling and assembling tool and switching tool thereof Download PDFInfo
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- CN215847903U CN215847903U CN202121620135.XU CN202121620135U CN215847903U CN 215847903 U CN215847903 U CN 215847903U CN 202121620135 U CN202121620135 U CN 202121620135U CN 215847903 U CN215847903 U CN 215847903U
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Abstract
The adapter tool is used for disassembling and assembling a low-pressure turbine rotor, the low-pressure turbine rotor comprises a multi-stage turbine disc assembly, and the multi-stage turbine disc assembly is fixedly connected with one another in the axial direction through bolts and nuts. The adapter tool comprises a radial transmission assembly, an axial transmission assembly and a limiting piece, wherein the radial transmission assembly is provided with a first matching part, one end of the axial transmission assembly is in transmission connection with the first matching part, and the limiting piece is provided with a second matching part, is connected with the axial transmission assembly and can move along the extending direction of the axial transmission assembly. Wherein, at the dismouting in-process, adapter realizes at the ascending transmission of axial through axial drive subassembly, realizes the ascending transmission in the radial of multistage turbine dish subassembly through radial drive subassembly, and axial drive subassembly receives external force drive when rotating, can drive first cooperation portion synchronous rotation to assemble or decompose nut or bolt. A disassembly and assembly tool is also provided.
Description
Technical Field
The utility model relates to engine assembly, in particular to a disassembling and assembling tool and a switching tool thereof.
Background
The low-pressure turbine rotor is an important component of an aircraft engine and is composed of a plurality of stages of turbine disc assemblies, and adjacent turbine discs are connected and fixed through a large number of bolts and nuts. Adopt the manual assembly of double spanner or decompose under the existing mode, during assembly or decomposition promptly, a spanner cover prevents the bolt rotation at the bolt head, and another ratchet spanner is installed on the nut, and ratchet spanner rotates the in-process, realizes screwing up or not hard up of nut. The number of connecting bolt nuts among the multistage turbine discs of the low-pressure turbine rotor is large, the number of connecting bolt nuts of a single rotor is hundreds, and the double-wrench manual decomposition mode is low in efficiency.
Because the connecting bolt nut is located low pressure turbine dish intracavity, the dish chamber space is narrow and small, can't directly realize the assembly or the decomposition of nut through electric spanner, needs design an electric spanner's switching tool, realizes the electronic assembly or the decomposition of low pressure turbine dish connecting bolt nut.
SUMMERY OF THE UTILITY MODEL
One object of the present invention is to provide a transition tool for the motorized disassembly or assembly of low pressure turbine disk attachment bolt and nut.
The above adapter tool is used for dismounting and mounting a low-pressure turbine rotor, the low-pressure turbine rotor comprises a multi-stage turbine disk assembly, and the multi-stage turbine disk assembly is fixedly connected with each other along an axial direction through a bolt and a nut, and the adapter tool is characterized by comprising: a radial drive assembly having a first mating portion; one end of the axial transmission component is in transmission connection with the first matching part; the limiting piece is provided with a second matching part, is connected with the axial transmission assembly and can move along the extension direction of the axial transmission assembly; in the assembling and disassembling process, the adapter tool realizes transmission in the axial direction through the axial transmission assembly, transmission in the radial direction of the multistage turbine disk assembly is realized through the radial transmission assembly, when the axial transmission assembly is driven to rotate by external force, the first matching part can be driven to synchronously rotate, so that the radial transmission assembly drives one of the bolt or the nut to rotate through the first matching part, and meanwhile, the limiting part limits the other one of the bolt or the nut in the rotating direction through the second matching part, so as to assemble or disassemble the nut or the bolt.
In one or more embodiments, the radial transmission assembly includes a first transmission member, the first transmission member has the first matching portion, the one end of the axial transmission assembly is provided with a second transmission member, and the axial transmission assembly and the radial transmission assembly are in transmission connection through the second transmission member, wherein the peripheries of the first transmission member and the second transmission member both have gear structures, and a plurality of gears are arranged between the first transmission member and the second transmission member.
In one or more embodiments, the first transmission member, the second transmission member, and the plurality of gears are all detachable.
In one or more embodiments, the first mating portion is removably coupled to the radial drive assembly.
In one or more embodiments, the first fitting portion has a shape corresponding to an outer peripheral contour of the one of the bolt or the nut.
In one or more embodiments, the second fitting portion has a shape corresponding to an outer peripheral contour of the other of the bolt or the nut.
In one or more embodiments, the axial drive assembly includes a drive rod rotatable about an axis thereof, the axis being parallel to the axial direction, and a sleeve disposed on an outer peripheral side of the drive rod, the sleeve being rotatable relative to the drive rod.
Above-mentioned adapter tool realizes the axial drive through axial drive assembly, realizes radial drive through radial drive assembly, and the rotation axis that will wait to decompose bolt or nut shifts to the open space department in turbine dish heart hole from the dish intracavity, is convenient for connect electric spanner, through set up mobilizable locating part on axial drive assembly, satisfies adapter tool and installs the demand of waiting to decompose bolt or nut to and prevent that the bolt from following the demand of changeing.
Another object of the present invention is to provide a disassembling and assembling tool for performing electric disassembling or assembling of a bolt nut of a low pressure turbine disk.
The disassembling and assembling tool comprises an electric wrench and the switching tool, wherein the electric wrench applies external force to the axial transmission assembly at the other end of the axial transmission assembly.
The disassembling and assembling tool is mounted on the to-be-disassembled bolt or nut through the adapter tool, the rotation axis of the to-be-disassembled bolt or nut can be transferred to the open space of the turbine disk center hole from the disk cavity, the electric wrench is convenient to connect, the low-pressure turbine rotor connecting nut is screwed or loosened through the electric wrench, the disassembling or assembling is manually upgraded into electric, and the assembling and disassembling efficiency of a large number of nuts is greatly improved.
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, in which:
FIG. 1 is a schematic illustration of a low pressure turbine rotor portion.
Fig. 2 is a schematic view of a crossover tool.
Fig. 3 is a schematic view of a portion of a crossover tool.
FIG. 4 is a schematic view of the electric assembly and disassembly of the adapter coupling bolt and nut.
Description of symbol mark
1 locating part
2 radial drive assembly
3 axial drive assembly
4 connecting part
5 drive rod
6 sleeve
7 turbine disk assembly
8 bolt
9 nut
11 second fitting part
12 through hole
13 opening
14 extension segment
15 fastener
21 first transmission piece
22 second transmission member
23 first fitting part
24 gear
81 bolt head
Y axis
Detailed Description
The present invention is further described in the following description with reference to specific embodiments and the accompanying drawings, wherein the details are set forth in order to provide a thorough understanding of the present invention, but it is apparent that the present invention can be embodied in many other forms different from those described herein, and it will be readily appreciated by those skilled in the art that the present invention can be implemented in many different forms without departing from the spirit and scope of the utility model. It is noted that these and other figures which follow are merely exemplary and not drawn to scale and should not be considered as limiting the scope of the utility model as it is actually claimed.
As shown in fig. 1, the low-pressure turbine rotor includes a multi-stage turbine disk assembly 7, the multi-stage turbine disk assembly 7 is axially fixedly connected with each other through a bolt 8 and a nut 9, the bolt 8 and the nut 9 are respectively arranged in a narrow space formed between the multi-stage turbine disk assembly 7, and an existing fastener is disassembled and an assembling tool is difficult to stretch into the narrow space for assembling.
In order to solve the problem of at least one aspect existing in the prior art, the utility model provides a decompose and assembly tool, can realize the electronic assembly or the decomposition of low pressure turbine dish connecting bolt nut, should decompose and assembly tool includes electric spanner and adapter tool.
As shown in fig. 2, the adapter tool includes an axial transmission component 3, a radial transmission component 2, and a limiting member 1, one end of the axial transmission component 3 is in transmission connection with the radial transmission component 2, the electric wrench applies an external force to the axial transmission component 3 at the other end of the axial transmission component 3, and the limiting member 1 is connected with the axial transmission component 3 and is movable along the extending direction of the axial transmission component 3. The radial transmission assembly 2 has a first matching portion 23, the limiting member 1 has a second matching portion 11, the radial transmission assembly 2 drives one of the bolt 8 or the nut 9 to rotate through the first matching portion 23, the limiting member 1 limits the other one of the bolt 8 or the nut 9 in the rotating direction through the second matching portion 11, namely, the second matching portion 11 limits the rotation of the bolt 8 or the nut 9 connected with the second matching portion in a matching manner. The adapter tool realizes the transmission in the axial direction through the axial transmission component 3, realizes the transmission in the radial direction of the multistage turbine disc component 7 through the radial transmission component 2, and when the axial transmission component 3 is driven by external force to rotate, the first matching part 23 of the radial transmission component 2 is driven to synchronously rotate so as to assemble or disassemble the bolt 8 or the nut 9.
In one embodiment, the axial drive assembly 3 is configured as shown in the figure and comprises a drive rod 5 and a sleeve 6, wherein the sleeve 6 is arranged on the outer periphery of the drive rod 5, the drive rod 5 is rotatable around the axis Y thereof, the axis Y of the drive rod 5 is parallel to the axial direction, and the sleeve 6 is rotatable relative to the drive rod 5. The top end of the transmission rod 5 is provided with a connecting part 4, and the connecting part 4 can be connected with an electric wrench to drive the axial transmission component 3 to rotate.
As shown in fig. 3, the radial transmission assembly 2 includes a first transmission member 21, the first transmission member 21 has a first matching portion 23, one end of the axial transmission assembly 3 is provided with a second transmission member 22, and the axial transmission assembly 3 and the radial transmission assembly 2 are in transmission connection through the second transmission member 22, so that the transmission rod 5 and the first matching portion 23 can synchronously rotate.
In the embodiment shown in fig. 3, the radial transmission assembly 2 adopts a gear transmission manner to transfer the rotation axis of the nut 9 from the disk cavity to the open space of the disk core hole of the turbine disk, wherein the peripheries of the first transmission member 21 and the second transmission member 22 have a gear structure, and the synchronous rotation of the first transmission member 21 and the second transmission member 22 is realized by arranging a plurality of gears 24 between the first transmission member 21 and the second transmission member 22. The transmission of greater torque can be realized when adopting gear drive's mode to move the rotation axis of nut 9 to the outside, through changing the gear ratio between first driving medium 21 and the second driving medium 22, can change the rotational speed of nut 9 and exert the moment of torsion size on nut 9 according to the operation demand.
In one embodiment, the first transmission member 21, the second transmission member 22 and the plurality of gears 24 are detachably disposed on the radial transmission assembly 2 and the axial transmission assembly 3, so as to facilitate replacement of the gear assembly.
In another embodiment different from that shown in the drawings, the radial transmission assembly 2 may adopt other transmission modes, such as a belt transmission mode, a chain transmission mode, for example, by arranging an annular belt on the periphery of the first transmission member 21 and the second transmission member 22, so that the second transmission member 22 drives the first transmission member 21 to rotate axially, and the rotation axis of the nut 9 can also be transferred from the disk cavity to the open space of the disk center hole of the turbine disk.
In another embodiment different from that shown, the axial transmission assembly 3 may have other suitable shapes, such as a bracket and a transmission rod, wherein the axial transmission assembly is supported on the rotor disk core through the bracket, and the transmission rod is arranged in the bracket and can rotate along the axis.
As shown in fig. 2, in one embodiment, the end of the stopper 1 is provided with a second engagement portion 11, and the second engagement portion 11 restricts the bolt 8 in the direction of rotation thereof, preventing the bolt 8 from following when the nut 9 is tightened or loosened. Specifically, in one embodiment, the second matching portion 11 has a first limiting surface and a second limiting surface, and the first limiting surface and the second limiting surface are respectively contacted with two side surfaces of the bolt head 81 to realize limiting.
The connection mode of the limiting member 1 and the axial transmission assembly 3 is as shown in fig. 2, a through hole 12 is formed in the limiting member 1, and the sleeve 6 is inserted into the through hole 12, so that the limiting member 1 can rotate around the axis Y and can move in the extending direction of the axial transmission assembly 3. In the embodiment shown in fig. 2, the through hole 12 has an opening 13, the opening 13 has two opposite extending sections 14, the extending sections 14 are provided with connecting holes, the fastening member 15 is a bolt and a nut, the two extending sections 14 are clamped by the fastening member 15, when the fastening member 15 is loosened, the limiting member 1 can move in the extending direction of the axial transmission assembly 3, and when the fastening member 15 is tightened, the limiting member 1 can be fixed on the sleeve 6.
In another embodiment different from the one shown in the drawings, the limiting member 1 is sleeved on the sleeve 6, the outer circumference of the sleeve 6 is provided with screw threads, and the fixing of the limiting member 1 on the sleeve 6 is realized by arranging nuts on the sleeve 6 at both sides of the limiting member 1.
Alternatively, the first fitting portion 23 has a shape corresponding to the outer peripheral profile of one of the bolt 8 or the nut 9. In one embodiment shown in fig. 4, the first mating portion 23 has a shape corresponding to the outer circumferential profile of the nut 9, enabling the first mating portion 23 to fully conform to the nut 9. In other embodiments, the first matching portion 23 may have other shapes, such as an oval shape, as long as the first matching portion 23 can drive the bolt 8 or the nut 9 to rotate.
Alternatively, the second fitting portion 11 has a shape corresponding to the outer peripheral contour of the other of the bolt 8 or the nut 9. In the embodiment shown in fig. 4, the second matching part 11 has a shape corresponding to the outer peripheral profile of the bolt head 81, so that the second matching part 11 can completely fit with the bolt head 81 to provide a better limiting and rotation-preventing effect. In other embodiments, the second engagement portion 11 may have other shapes as long as the second engagement portion 11 can limit the bolt 8 or the nut 9 in the direction of rotation thereof.
In one embodiment, the first mating portion 23 is removably connected to the radial drive assembly 2 so as to be replaceable when a different nut 9 or bolt 8 is assembled or disassembled.
The use of the disassembly and assembly tool is described with reference to fig. 4, which the user can hold on the sleeve 6 during operation.
Loosening the fastening piece 15, and sliding the limiting piece 1 upwards along the axial direction to increase the axial distance between the limiting piece 1 and the radial transmission assembly 2;
sleeving the radial transmission assembly 2 on the nut 9 to make the nut 9 non-rotatable relative to the first matching part 23, and sleeving the limiting piece 1 on the bolt head 81 to make the bolt head 81 non-rotatable relative to the second matching part 11;
the fastener 15 is screwed, the limiting piece 1 is clamped on the sleeve 6 through the two extension sections 14, the fixing of the limiting piece 1 is realized, and the requirement of preventing the bolt 8 from rotating along with the rotation is met;
after the electric wrench is connected with the transmission rod 5, the transmission rod 5 is driven to rotate, and the rotation of the transmission rod 5 is transmitted to the first matching part 23 through the radial transmission assembly 2, so that the nut 9 is screwed or loosened.
In one embodiment, the bolt 8 and the nut 9 are axially clamped by the retaining member 1 and the radial transmission assembly 2, respectively, so that the adapter tool can be mounted without being held by hand at the sleeve 6 during the disassembly or assembly operation.
The disassembling and assembling tool realizes the screwing or loosening of the low-pressure turbine rotor connecting nut 9 through an electric wrench, the disassembling or assembling is manually upgraded into the electric assembling, and the assembling and disassembling efficiency of a large number of nuts 9 is greatly improved. The rotation axis of the bolt or the nut to be disassembled is transferred from the disk cavity to the open space of the disk center hole of the turbine disk through the radial transmission assembly 2, so that the electric wrench is convenient to connect. Through set up mobilizable locating part 1 on sleeve 6, satisfy adapter and install the demand of waiting to decompose bolt or nut to and prevent the demand that the bolt from following the commentaries on classics.
Although the present invention has been disclosed in terms of the preferred embodiment, it is not intended to limit the utility model, and variations and modifications may be made by one skilled in the art without departing from the spirit and scope of the utility model. Therefore, any modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope defined by the claims of the present invention, unless the technical essence of the present invention departs from the content of the present invention.
Claims (8)
1. An adapter tool for dismounting a low-pressure turbine rotor, wherein the low-pressure turbine rotor comprises a multi-stage turbine disk assembly, and the multi-stage turbine disk assembly is fixedly connected with the multi-stage turbine disk assembly in an axial direction through bolts and nuts, the adapter tool is characterized by comprising:
a radial drive assembly having a first mating portion;
one end of the axial transmission component is in transmission connection with the first matching part; and
the limiting piece is provided with a second matching part, is connected with the axial transmission assembly and can move along the extension direction of the axial transmission assembly;
in the assembling and disassembling process, the adapter tool realizes transmission in the axial direction through the axial transmission assembly, transmission in the radial direction of the multistage turbine disk assembly is realized through the radial transmission assembly, when the axial transmission assembly is driven to rotate by external force, the first matching part can be driven to synchronously rotate, so that the radial transmission assembly drives one of the bolt or the nut to rotate through the first matching part, and meanwhile, the limiting part limits the other one of the bolt or the nut in the rotating direction through the second matching part, so as to assemble or disassemble the nut or the bolt.
2. The crossover tool of claim 1, wherein the radial drive assembly includes a first drive member having the first engagement portion, wherein the axial drive assembly is provided at one end with a second drive member by which the axial drive assembly is drivingly connected to the radial drive assembly,
the periphery of the first transmission piece and the periphery of the second transmission piece are both provided with gear structures, and a plurality of gears are arranged between the first transmission piece and the second transmission piece.
3. The crossover tool of claim 2, wherein the first transmission member, the second transmission member, and the plurality of gears are all removable.
4. The adapter of claim 1, wherein the first mating portion is removably coupled to the radial drive assembly.
5. The adapter of claim 1, wherein the first mating portion has a shape corresponding to an outer peripheral profile of the one of the bolt or the nut.
6. The adapter of claim 1, wherein the second engagement portion has a shape corresponding to an outer peripheral profile of the other of the bolt or the nut.
7. The crossover tool of claim 1, wherein the axial drive assembly includes a drive link rotatable about an axis thereof, the axis being parallel to the axial direction, and a sleeve disposed on an outer peripheral side of the drive link, the sleeve being rotatable relative to the drive link.
8. A disassembly and assembly tool comprising a power wrench and a crossover tool as claimed in any of claims 1 to 7, the power wrench applying an external force to the axial drive assembly at the other end of the axial drive assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121620135.XU CN215847903U (en) | 2021-07-16 | 2021-07-16 | Disassembling and assembling tool and switching tool thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121620135.XU CN215847903U (en) | 2021-07-16 | 2021-07-16 | Disassembling and assembling tool and switching tool thereof |
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| Publication Number | Publication Date |
|---|---|
| CN215847903U true CN215847903U (en) | 2022-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121620135.XU Active CN215847903U (en) | 2021-07-16 | 2021-07-16 | Disassembling and assembling tool and switching tool thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114535982A (en) * | 2022-04-02 | 2022-05-27 | 中国航发沈阳发动机研究所 | Aeroengine doublestage high whirlpool stator unit body assembly fixture |
-
2021
- 2021-07-16 CN CN202121620135.XU patent/CN215847903U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114535982A (en) * | 2022-04-02 | 2022-05-27 | 中国航发沈阳发动机研究所 | Aeroengine doublestage high whirlpool stator unit body assembly fixture |
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