CN217475857U

CN217475857U - Decomposition tool

Info

Publication number: CN217475857U
Application number: CN202221746639.0U
Authority: CN
Inventors: 李明; 余振兴; 郭琳
Original assignee: AECC Commercial Aircraft Engine Co Ltd
Current assignee: AECC Commercial Aircraft Engine Co Ltd
Priority date: 2022-07-06
Filing date: 2022-07-06
Publication date: 2022-09-23
Anticipated expiration: 2032-07-06

Abstract

An object of the utility model is to provide a decomposition tool, it includes base, supporting seat, a plurality of pulling claws, locating part and application of force spare. The supporting seat is supported above the base and is provided with a plurality of cantilevers protruding towards the outer periphery of the supporting seat. The pulling claws are arranged on the cantilever in a one-to-one correspondence manner and can move along the extension direction of the cantilever, and each pulling claw is provided with a hook part. The limiting piece is arranged corresponding to each pulling claw, and the movement of the pulling claws along the extension direction is limited at the specified position. The force application part is connected in the supporting seat and used for applying external force to the supporting seat, so that the supporting seat has the tendency of moving towards the end far away from the low-vortex-shaft along the axial direction. The distance between the cantilever and the end of the low-vortex shaft is adjustable, and the hook part can hook the flange platform of the sealing ring, so that when the force application part applies force, the hook part applies axial tension to the hooked flange platform. The disassembly tool can be used for disassembling sealing rings with different installation positions and sizes.

Description

Decomposition tool

Technical Field

The utility model relates to an aeroengine assembly field especially relates to a decomposition tool.

Background

The sealing ring is an important part for ensuring the sealing performance of the aero-engine, is an important component of an engine rotor, and is usually installed in a structural form of interference spigot fit and bolt connection, for example, the sealing ring of a low-pressure turbine rotor supporting conical wall inner cavity, in order to ensure the assembly quality and the assembly repeatability of the rotor.

Fig. 1 shows a schematic view of a prior art seal ring structure, wherein the end of a model low-pressure turbine shaft 90 is provided with a front seal ring 91, a middle seal ring 92 and a rear seal ring 93. The front sealing ring 91, the middle sealing ring 92 and the rear sealing ring 93 have different sizes and are positioned on different axial sections, and the size and the installation position have larger differences.

How to provide a disassembling tool, which can disassemble the sealing rings at different positions and sizes of the end of the low-pressure turbine shaft 90, is a problem to be solved urgently.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a decomposition instrument can realize dismantling the ring of obturaging of different mounted position and size.

To achieve the foregoing object, a disassembly tool for removing a seal ring at a low scroll shaft end includes:

a base supportable at the low scroll shaft end;

the supporting seat is supported above the base and is provided with a plurality of cantilevers which protrude towards the outer peripheral side of the supporting seat;

the pulling claws are arranged on the cantilever in a one-to-one correspondence manner and can move along the extension direction of the cantilever, and each pulling claw is provided with a hook part;

the limiting piece is arranged corresponding to each pulling claw and limits the movement of the pulling claws along the extending direction at a specified position; and

the force application piece is connected in the supporting seat and used for applying external force to the supporting seat so that the supporting seat has a tendency of moving towards the end far away from the low-vortex-axis along the axial direction;

the distance between the cantilever and the shaft end of the low vortex shaft is adjustable, and the hook part can hook the flange platform of the sealing ring, so that when the force application part applies force, the hook part applies axial tension to the hooked flange platform.

In one or more embodiments, the disassembly tool further comprises one or more adapters, the adapters being removably disposed between the base and the support base;

the distance between the cantilever and the shaft end of the low vortex shaft is adjusted by increasing or decreasing the number of the adapters.

In one or more embodiments, a bearing piece is further arranged between the adapter piece and the support seat, and the bearing piece is provided with a first connecting end and a second connecting end;

the first connecting end can be detachably connected with the adapter or the base, and the supporting seat is sleeved on the periphery of the second connecting end.

In one or more embodiments, the second connecting end has a force bearing end face, the force application member is a pressure cylinder, and the pressure cylinder has an actuating part which can extend out of or retract into a body of the pressure cylinder;

when the actuating part extends out of the body of the pressure cylinder, the actuating part is pressed against the force bearing end face to apply external force to the supporting seat, so that the supporting seat has the tendency of moving towards the axial end far away from the low-vortex shaft along the axial direction.

In one or more embodiments, the pressure cylinder is threaded into the support base.

In one or more embodiments, the adaptor is in fit connection with the base spigot, and the first connection end is in fit connection with the adaptor or the base spigot.

In one or more embodiments, the cantilever is provided with a plurality of first through holes, the plurality of first through holes are distributed along the extending direction of the cantilever, the claw is provided with a plurality of second through holes, and the limiting member is a bolt;

after the second through hole moves to a position aligned with any one of the first through holes, the bolt is inserted into the first through hole and the second through hole to limit the movement of the pulling claw along the extending direction.

In one or more embodiments, the number of the cantilevers is three, and the cantilevers are uniformly distributed on the periphery of the supporting seat.

The beneficial effects of the utility model reside in that:

this decomposition frock simple structure, the adjustment is convenient, convenient operation, and processing cost is low, through set up height-adjustable, radial position adjustable claw 3 in the decomposition instrument, can utilize same instrument to realize dismantling the ring of obturating of different positions, radius size, need not to relapse assembly and disassembly tools at the dismantlement in-process, has promoted dismantlement efficiency.

The foregoing description is only an overview of the technical solutions of the present application, and the present application can be implemented according to the content of the description in order to make the technical means of the present application more clearly understood, and the following detailed description of the present application is given in order to make the above and other objects, features, and advantages of the present application more clearly understandable.

Drawings

Various additional advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Moreover, like reference numerals are used to refer to like elements throughout. In the drawings:

FIG. 1 shows a schematic diagram of a prior art seal ring structure;

FIG. 2 illustrates a perspective view of a break-up tool according to some embodiments of the present application;

FIG. 3 illustrates a schematic half-section view of a break-up tool according to some embodiments of the present application;

FIG. 4 illustrates a disassembly state diagram of a disassembly tool according to some embodiments of the present application;

FIG. 5 illustrates a schematic view of a disassembly tool removing a front seal ring according to some embodiments of the present application;

FIG. 6 illustrates a schematic view of a disassembly tool removing a middle packing ring according to some embodiments of the present application;

FIG. 7 illustrates a disassembly tool with a rear packing ring removed according to some embodiments of the present application.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are merely used to more clearly illustrate the technical solutions of the present application, and therefore are only examples, and the protection scope of the present application is not limited thereby.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof, in the description and claims of this application and the description of the above figures are intended to cover non-exclusive inclusions.

At present, when the sealing rings at different positions such as shown in fig. 1 are disassembled, the pulling tools with different configurations need to be replaced, the three sealing rings are respectively disassembled one by one, and the whole disassembling process is complicated, time-consuming and labor-consuming because the pulling tools need to be reassembled every time the sealing rings are disassembled.

The applicant has found after research that the aforesaid problem can be solved by providing a new type of disassembly tool, which can be adapted and removed for different positions and structures of the sealing ring.

According to some embodiments of the present application, a disassembly tool is provided, as shown in fig. 2, which illustrates a perspective view of a disassembly tool according to some embodiments of the present application, fig. 3, which illustrates a half-section view of a disassembly tool according to some embodiments of the present application, and fig. 4, which illustrates a disassembly state view of a disassembly tool according to some embodiments of the present application.

As shown in fig. 4, the disassembling tool is used for disassembling the sealing ring at the end of the low-vortex shaft, and as shown in fig. 2 to 3, the disassembling tool includes: the device comprises a base 1, a supporting seat 2, a claw 3, a limiting piece 4 and a force application piece 5. Wherein, base 1 can support in the axle head of low vortex, for example supports in the axle head of low vortex through the tang cooperation to play the supporting role to whole decomposition instrument, supporting seat 2 supports and sets up in the top of base 1 to have a plurality of cantilevers 20 that protrude towards supporting seat 2 periphery side as shown in the figure, the claw 3 is a plurality ofly that set up with cantilever 20 quantity one-to-one, and every claw 3 all follows the extending direction of cantilever 20, and the direction of stretching out is movable promptly. Each pulling claw 3 is provided with a hook part 30, and the hook parts 30 hook the sealing ring to realize the pulling and detaching of the sealing ring. In a specific embodiment, the hook 30 is formed to protrude toward one side of the extracting claw 3, and in other embodiments different from the embodiment shown in the drawings, the hook 30 may be a hook with other structures, such as a hook.

The limiting members 4 are disposed corresponding to each of the fingers 3, and the limiting members 4 can limit the movement of the fingers 3 along the extending direction of the cantilever 20 at the designated positions, wherein the specific structure and the limiting manner of the limiting members 4 will be described in detail later, and will not be described herein again.

The force application part 5 is connected in the support seat 2 and is used for applying external force to the support seat 2, so that the support seat 2 has the tendency of moving away from the shaft end of the low vortex shaft along the axial direction.

The distance between the cantilever 20 and the shaft end of the lower scroll shaft is adjustable, and the hook portion 30 can hook the flange platform of the sealing ring, so that when the force application member 5 applies force, the hook portion 30 applies axial tension to the hooked flange platform, and the sealing ring is pulled out.

Fig. 5 shows a schematic diagram of the disassembly tool according to some embodiments of the present application when the front sealing ring is disassembled, in this state, the base 1 is firstly supported and disposed at the shaft end of the low-vortex shaft 90, the supporting seat 2 is supported and disposed above the base 1, the pulling claw 3 moves to a position close to the front sealing ring 91 along the cantilever 20, and the height of the pulling claw 3 is adjusted to make the hook portion 30 hook under the flange platform of the front sealing ring 91, at this time, the force applying member 5 is made to actuate, and an axial external force is applied to the supporting seat 2, so that the supporting seat 2 supported above the base 1 has a tendency of moving towards the shaft end far away from the low-vortex shaft 90, and thus the plurality of pulling claws 3 pull the front sealing ring 91 under the driving of the cantilever 20 of the supporting seat 2, so as to achieve the pulling out of the front sealing ring 91.

Fig. 6 shows a schematic diagram of the disassembling of the middle sealing ring by the disassembling tool according to some embodiments of the present application, in this state, the base 1 is firstly supported and disposed at the shaft end of the low-vortex shaft 90, the supporting seat 2 is supported and disposed above the base 1, the pulling claw 3 moves to a position close to the middle sealing ring 92 along the cantilever 20, and the height of the pulling claw 3 is adjusted to make the hook portion 30 hook under the flange platform of the middle sealing ring 92, at this time, the force application member 5 is actuated to apply an axial external force to the supporting seat 2, so that the supporting seat 2 supported above the base 1 has a tendency to move towards the shaft end far away from the low-vortex shaft 90, and thus the pulling claws 3 pull down the sealing ring 92 in the driving of the cantilever 20 of the supporting seat 2 to realize the pulling out of the middle sealing ring 92.

Fig. 7 shows a schematic diagram of the disassembly tool according to some embodiments of the present application when the rear sealing ring is disassembled, in this state, the base 1 is firstly supported and disposed at the shaft end of the low-vortex shaft 90, the supporting seat 2 is supported and disposed above the base 1, the pulling claw 3 moves to a position close to the rear sealing ring 93 along the cantilever 20, and the height of the pulling claw 3 is adjusted to make the hook portion 30 hook under the flange table of the rear sealing ring 93, at this time, the force application member 5 is actuated to apply an axial force to the supporting seat 2, so that the supporting seat 2 supported above the base 1 has a tendency of moving towards the shaft end far away from the low-vortex shaft 90, and thus the plurality of pulling claws 3 pull the rear sealing ring 93 under the driving of the cantilever 20 of the supporting seat 2, so as to realize the pulling-out of the rear sealing ring 93.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein may be combined with other embodiments.

In the description of the embodiments of the present application, "a plurality" means two or more unless specifically defined otherwise.

According to some embodiments of the present application, please refer to fig. 2 and fig. 3, the disassembling tool further includes one or more adapters 6, the adapters 6 are detachably disposed between the base 1 and the supporting seat 2, and the height of the supporting seat 2 on the base 1 is adjusted by increasing or decreasing the number of the adapters between the base 1 and the supporting seat 2, so as to adjust the distance between the cantilever 20 and the shaft end of the lower scroll 90.

In some other embodiments different from the one shown, the adjustment of the axial end distance of the cantilever 20 relative to the lower scroll 90 can be realized by other structures or forms, for example, in some embodiments, by providing a telescopic rod between the base 1 and the supporting seat 2, or by providing the base 1 and/or the supporting seat 2 in a telescopic manner in whole or in part.

Further, according to some embodiments of the present application, please refer to fig. 2 and fig. 3, a force bearing member 7 is further disposed between the adaptor 6 and the support base 2, the force bearing member 7 has a first connection end 71 and a second connection end 72, wherein the first connection end 71 is configured to be detachably connected to the adaptor 6 or the base 1, that is, when one or more adaptor is disposed between the base 1 and the support base 2, the force bearing member 7 is detachably disposed on the adaptor 6, and when the adaptor 6 is not disposed between the base 1 and the support base 2, the force bearing member 7 is directly detachably disposed on the base 1, so as to ensure that when the cantilever 20 needs to be adjusted to different heights, the adjustment can be achieved by adding, deleting, or directly not disposing the adaptor 6. The supporting seat 2 is sleeved and connected to the outer periphery of the second connecting end 72, specifically, in the embodiment shown in the figure, the second connecting end 72 is an axial structure, the supporting seat 2 has a hole portion, and the supporting seat 2 and the force bearing member 7 are detachably connected in an axial hole manner in a matching manner. Can strengthen the coaxiality of supporting seat 2 and force bearing part 7 through this kind of cooperation mode for the application of force direction of application of force part 5 can be located the axis that supports the conical wall, thereby reaches the direction of motion of supporting seat 2 and is unanimous with low vortex 90 axis, guarantees that the pulling force of a plurality of pulling claws 3 is unanimous, avoids the ring of obturating to pull out partially unable decomposition.

As shown in fig. 5 to 7, for example, in fig. 5, because the front sealing ring 91 has a low height, the adapter 6 is not arranged between the supporting seat 2 and the base 1, but the base 2 is directly placed on the bearing member 7 on the base 1; in fig. 6, the height of the middle sealing ring 92 is higher than that of the front sealing ring 91, an adapter 6 is arranged between the support base 2 and the base 1, and the adapter 6 is located between the force bearing member 7 and the base 1; finally, in fig. 7, the rear sealing ring 93 has a relatively higher height, two adapters 6 are arranged between the support base 2 and the base 1, and the two adapters 6 are stacked between the force bearing member 7 and the base 1.

Further, in one embodiment, as shown in fig. 2 to 3, the upper and lower end surfaces of the adaptor 6, the upper end surface of the base 1, and the lower end surface of the force bearing member 7 respectively have a spigot portion, the spigot portion of the adaptor 6 is connected with the base 1 in a fitting manner, and the spigot portion of the first connection end 71 of the force bearing member 7 is connected with the base 1 or the adaptor 6 in a fitting manner.

With continued reference to fig. 3, in an embodiment of the present application, the second connecting end 72 has a force-bearing end surface 720, the force-applying member 5 is a pressure cylinder, the pressure cylinder has an actuating portion 50, and the actuating portion 50 can extend out of or retract into the body of the pressure cylinder 5. When the actuating portion 50 extends out of the body of the pressure cylinder, the actuating portion 50 will press against the force-bearing end surface 720, and when a downward force is applied to the force-bearing end surface 720, an external force is applied to the support base 2 by a reaction force, so that the support base 2 has a tendency of moving toward the end far away from the low-vortex shaft 90 along the axial direction.

Further, in one embodiment, the force applying member 5 (pressure cylinder) is screwed into the support base 2. In other embodiments than those shown in the drawings, the force applying member 5 may be other means for applying axial force, such as a ram.

Referring to fig. 3, in an embodiment of the present application, a plurality of first through holes 201 are formed in the cantilever 20, the plurality of first through holes 201 are arranged along the extending direction of the cantilever 20, a plurality of second through holes 31 are formed on the claw 3, and the limiting member 4 is a plug. After the second through hole 31 is moved to a position aligned with any one of the first through holes 201, the movement of the claw 3 along the extending direction of the cantilever 20 is limited by inserting the pin into the first through hole 201 and the second through hole 31.

In other embodiments different from the embodiments shown in the drawings, the position-limiting member 4 may have other structures to limit the position of the extracting claw 3, for example, the position-limiting member 4 may be a locking bolt.

In one embodiment of the present application, the cantilevers 20 are three cantilevers uniformly arranged on the periphery of the supporting base 2, correspondingly, the number of the pulling claws 3 is three corresponding to the number of the cantilevers 20, and the number of the limiting members 4 is three corresponding to the number of the pulling claws 3. The three cantilevers 20 make it possible to apply a more uniform force to the packing ring during the disassembly process.

In a specific embodiment, the claw 3 is sleeved on the suspension arm 20 through a hole in an axis-fitting manner, so as to be movable along the suspension arm 20, and in other embodiments, the suspension arm 20 and the claw 3 may be connected through a sliding rail or a slider fitting manner, for example.

In the description of the embodiments of the present application, the technical terms "first", "second", and the like are used only for distinguishing different objects, and are not to be construed as indicating or implying relative importance or implicitly indicating the number, specific order, or primary-secondary relationship of the technical features indicated.

In the description of the embodiments of the present application, the term "and/or" is only one kind of association relationship describing an associated object, and means that three relationships may exist, for example, a and/or B, and may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

In the description of the embodiments of the present application, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are used in a broad sense, and for example, may be fixedly connected, detachably connected, or integrated; mechanical connection or electrical connection is also possible; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the embodiments of the present application can be understood by those of ordinary skill in the art according to specific situations.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present disclosure, and the present disclosure should be construed as being covered by the claims and the specification. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present application is not intended to be limited to the particular embodiments disclosed herein but is to cover all embodiments that may fall within the scope of the appended claims.

Claims

1. A disassembly tool for removing a seal ring from a low-turbine shaft end, the disassembly tool comprising:

a base supportable at the low scroll shaft end;

the supporting seat is supported above the base and provided with a plurality of cantilevers protruding towards the outer peripheral side of the supporting seat;

the force application part is connected in the supporting seat and used for applying external force to the supporting seat so that the supporting seat has the tendency of moving towards the axial end far away from the low-vortex shaft along the axial direction;

the distance between the cantilever and the shaft end of the low-vortex shaft is adjustable, and the hook part can hook the flange platform of the sealing ring, so that when the force application part applies force, the hook part applies axial tension to the hooked flange platform.

2. The disassembly tool of claim 1, further comprising one or more adapters removably disposed between the base and the support base;

the distance between the cantilever and the shaft end of the low vortex shaft is adjusted by increasing or decreasing the number of the adapter pieces.

3. The disassembly tool of claim 2, wherein a bearing member is further disposed between the adapter member and the support base, the bearing member having a first connection end and a second connection end;

4. The disassembly tool of claim 3, wherein the second connection end has a force-bearing end face, the force-applying member is a pressure cylinder, the pressure cylinder has an actuating portion that is extendable or retractable from a body of the pressure cylinder;

when the actuating part extends out of the body of the pressure cylinder, the actuating part is pressed against the force bearing end face to apply external force to the supporting seat, so that the supporting seat has a tendency of moving towards the end far away from the low-vortex shaft along the axial direction.

5. The disassembly tool of claim 4 wherein the pressure cylinder is threaded into the support block.

6. The disassembly tool of claim 4 wherein the adapter is matingly coupled to the base seam allowance and the first connection end is matingly coupled to either the adapter or the base seam allowance.

7. The disassembly tool of claim 1, wherein the cantilever has a plurality of first through holes, the plurality of first through holes are arranged along the extending direction of the cantilever, the pawl has a plurality of second through holes, and the position-limiting member is a pin;

after the second through hole moves to a position aligned with any one of the first through holes, the bolt is inserted into the first through hole and the second through hole so as to limit the movement of the pulling claw along the extending direction.

8. The disassembly tool of claim 1, wherein the cantilever is three that are uniformly disposed about the periphery of the support base.