CN111975704A

CN111975704A - Disassembling tool

Info

Publication number: CN111975704A
Application number: CN202010879164.1A
Authority: CN
Inventors: 薄涵亮; 姜胜耀; 张亚军; 王金海; 秦本科; 赵陈儒; 刘潜峰
Original assignee: Tsinghua University
Current assignee: Tsinghua University
Priority date: 2020-08-27
Filing date: 2020-08-27
Publication date: 2020-11-24
Anticipated expiration: 2040-08-27
Also published as: CN111975704B

Abstract

The invention relates to the technical field of mechanical assembling tools, and provides a disassembling tool which is used for disassembling and assembling a shaft assembly comprising an outer shaft and a shaft assembly core clamped and fixed in the inner shaft of the outer shaft, and the disassembling tool comprises: the connecting pipe is provided with a first fixing piece for fixing the outer shaft; the moving piece is positioned in the connecting pipe and comprises an unlocking part, a cavity for inserting the shaft core and a second fixing piece for fixing the shaft core; the driving part is connected with the moving part and used for driving the moving part to move along the axial direction of the connecting pipe so as to enable the moving part to be switched between an installation position close to the first fixing part and a disassembly position far away from the first fixing part; and in the mounting position, the unlocking part is used for being inserted into the shaft assembly to unlock the clamping of the outer shaft and the shaft core. The disassembling tool provided by the invention can realize the disassembling of the shaft assembly, has a simple structure, is convenient to operate, and is suitable for disassembling the control rod assembly and the driving shaft in a reactor.

Description

Disassembling tool

Technical Field

The invention relates to the technical field of mechanical assembling tools, in particular to a disassembling tool.

Background

In the machine component mounting and dismounting process, generally, a mounting and dismounting tool is required to assist. When the shaft assembly comprises a shaft core and an outer shaft sleeved outside the shaft core, the assembly and disassembly of the shaft core and the outer shaft require the assistance of special tools.

The hydraulic driving technology of the control rod of the nuclear reactor is a built-in control rod driving technology, a driving mechanism of the hydraulic driving technology is arranged in a high-temperature, high-pressure and irradiation environment in a reactor pressure container, and three hydraulic cylinders are used for driving transmission and clamping two sets of control rod assemblies to move in sequence through lifting, transmission and clamping, so that the functions of step lifting, step lowering and rod falling of the control rod assemblies are realized. In the installation process of the control rod drive wire, how to conveniently and quickly disassemble and assemble the drive shaft to be matched with the detachable connecting mechanism becomes a problem which troubles technical personnel. And no tool suitable for disassembling and assembling the connection between the cross wing control rod assembly and the drive shaft has been found in the related art of mechanical component assembly.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a disassembling tool which is simple in structure and convenient to operate.

The dismounting tool according to the embodiment of the invention is used for dismounting a shaft assembly comprising an outer shaft and a shaft core clamped in the outer shaft, and comprises:

the connecting pipe is provided with a first fixing piece for fixing the outer shaft;

the moving piece is positioned in the connecting pipe and comprises an unlocking part, a cavity for inserting the shaft core and a second fixing piece for fixing the shaft core;

the driving part is connected with the moving part and used for driving the moving part to move along the axial direction of the connecting pipe so as to enable the moving part to be switched between an installation position close to the first fixed part and a disassembly position far away from the first fixed part; and in the mounting position, the unlocking part is used for being inserted into the shaft assembly to unlock the clamping of the outer shaft and the shaft core.

According to an embodiment of the present invention, the driving member includes a rotating portion and at least two guide portions having different distances from the rotating portion, and the rotating portion is rotatably connected to the connecting pipe; the moving piece is provided with a connecting piece, and the connecting piece is connected to the guide part and can move along the guide part.

According to one embodiment of the invention, the connecting element comprises a bar construction and a roller rotatably connected to the bar construction, the roller being connected to the guide.

According to one embodiment of the invention, the connecting pipe and the moving member are both provided with a through opening, and the driving member passes through the through opening to be connected with the roller wheel positioned in the connecting pipe.

According to one embodiment of the invention, at least one end of the guide part is provided with an opening, the opening is connected with a fixing block for closing the opening, and the fixing block is limited on the outer wall of the connecting pipe.

According to an embodiment of the present invention, the guide portion is provided in an arc-shaped long hole structure, and a distance from the guide portion to the rotating portion is gradually reduced from one end of the guide portion to the other end.

According to an embodiment of the present invention, the moving member includes a stopper portion and the unlocking portion, the inner wall of the stopper portion and the inner wall of the unlocking portion form the through cavity, the outer wall of the stopper portion is attached to the inner wall of the connecting pipe, and the unlocking portion is adapted to be inserted into the circumferential seam between the outer shaft and the shaft core.

According to an embodiment of the present invention, the first fixing member is a bolt penetrating and connected to the connection pipe; and/or the second fixing piece is a screw which penetrates through the connecting pipe and is connected to the moving piece.

According to one embodiment of the invention, the driving member is provided with a gripping portion.

According to one embodiment of the invention, a lifting ring is connected to the connecting tube.

One or more technical solutions in the embodiments of the present invention have at least one of the following technical effects:

the dismounting tool provided by the embodiment of the invention comprises a connecting pipe, a moving piece and a driving piece, wherein the moving piece is arranged in the connecting pipe, the driving piece is connected with the moving piece and is used for driving the moving piece to move along the axial direction of the connecting pipe, and the moving piece can drive a shaft core to move so as to enable the shaft core to move relative to an outer shaft by a preset distance, so that the shaft core and the outer shaft are dismounted; on the contrary, the installation of the shaft core and the outer shaft can be realized, the operation is simple and convenient, and the structure is simple; the disassembly and assembly tool of the embodiment is particularly suitable for disassembling and assembling the cross wing control rod assembly and the driving shaft, namely, the cross wing control rod assembly and the driving shaft are connected or disassembled by the disassembly and assembly tool of the embodiment.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a disassembly and assembly tool according to an embodiment of the present invention;

FIG. 2 is a schematic sectional view A-A of FIG. 1;

FIG. 3 is a schematic structural view of a shaft assembly to which embodiments of the present invention are applicable;

FIG. 4 is a schematic structural diagram of a mounting shaft assembly of the assembly and disassembly tool provided by an embodiment of the invention;

fig. 5 is a schematic structural diagram of a disassembly and assembly tool according to an embodiment of the present invention in an exploded state.

Reference numerals:

1: a connecting pipe; 11: a first fixing member; 12: a connecting shaft; 13: a first through hole; 14: mounting holes; 15: a hoisting ring; 16: mounting a rod;

2: a moving member; 21: a connecting member; 211: a rod structure; 212: a roller; 22: a limiting part; 221: a second through hole; 23: an unlocking portion; 24: a cavity; 25: a second fixing member;

3: a drive member; 31: a rotating part; 32: a guide portion; 321: an opening; 33: a fixed block; 331: fixing the bolt; 34: a grip portion;

4: a shaft assembly; 41: an outer shaft; 411: an outer shaft ring groove; 42: a shaft core; 421: a shaft core ring groove; 43: expanding rings; 44: and (5) performing circular sewing.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the embodiments of the present invention, it should be noted that the terms "center", "upper", "lower", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only used for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.

In embodiments of the invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

One embodiment of the present invention, as shown in fig. 1 to 5, provides a tool for disassembling and assembling a shaft assembly 4 including an outer shaft 41 and a shaft core 42 fastened to the outer shaft 41. The assembly and disassembly tool of the embodiment comprises: the connecting pipe 1, the moving part 2 and the driving part 3; the connection pipe 1 is provided with a first fixing member 11 for fixing the outer shaft 41; the moving part 2 is positioned in the connecting pipe 1, and the moving part 2 comprises an unlocking part 23, a cavity 24 for inserting the shaft core 42 and a second fixing part 25 for fixing the shaft core 42; the driving part 3 is connected with the moving part 2, and the driving part 3 is used for driving the moving part 2 to move along the axial direction of the connecting pipe 1 so as to switch the moving part 2 between an installation position close to the first fixed part 11 and a disassembly position far away from the first fixed part 11; the moving member 2 is in the mounting position, and the unlocking portion 23 is used for being inserted into the shaft assembly 4 to release the clamping between the outer shaft 41 and the shaft core 42.

When the shaft core 42 and the outer shaft 41 need to be switched from the mounting state to the dismounting state, the shaft assembly 4 with the shaft core 42 and the outer shaft 41 fixed together is inserted into the connecting pipe 1, wherein the outer shaft 41 is in the connecting pipe 1 and fixed to the connecting pipe 1 through the first fixing part 11, the shaft core 42 is inserted into the cavity 24 of the moving part 2 and fixed to the moving part 2 through the second fixing part 25, and in the process of inserting the shaft core 42 into the cavity 24, the unlocking part 23 of the moving part 2 is inserted between the outer shaft 41 and the shaft core 42 to release the clamping between the outer shaft 41 and the shaft core 42. After the outer shaft 41 and the shaft core 42 are fixed in the disassembling tool and the clamping relationship is released, the driving member 3 can drive the moving member 2 to move away from the first fixing member 11 along the axial direction of the connecting pipe 1, at this time, the moving member 2 moves to the disassembling position, so that the shaft core 42 moves towards the direction away from the outer shaft 41 to preset the displacement, and the shaft core 42 and the outer shaft 41 are disassembled.

When the shaft core 42 and the outer shaft 41 need to be converted from the detached state to the installed state, the independent shaft core 42 is fixed to the moving member 2 through the second fixing member 25, and the independent outer shaft 41 is fixed to the connecting pipe 1 through the first fixing member 11; the driving part 3 drives the moving part 2 to move reversely, the shaft core 42 moves towards the direction close to the outer shaft 41 to preset displacement, the moving part 2 moves to the installation position, the unlocking part 23 is inserted between the shaft core 42 and the outer shaft 41 again, the shaft core 42 and the outer shaft 41 can be installed and fixed, at the moment, the fixed relation of the second fixing part 25 to the shaft core 42 and the moving part 2 is released, the driving part 3 can drive the moving part 2 to move towards the disassembly position again, the unlocking part 23 of the moving part 2 is separated from the shaft assembly 4, the insertion unlocking relation of the moving part 2 to the shaft assembly 4 is released, the outer shaft 41 and the shaft core 42 are clamped and fixed again, and the installation of the shaft core 42 and.

Referring to fig. 3, an embodiment of the structure of the shaft assembly 4 is provided, where the shaft assembly 4 includes an outer shaft 41, a shaft core 42, and an expansion ring 43, when the outer shaft 41 is fixed to the shaft core 42, the outer shaft 41 is fastened to the shaft core 42 through the expansion ring 43, and when the outer shaft 41 is detached from the shaft core 42, the expansion ring 43 needs to be expanded, so that the expansion ring 43 enters a groove of the outer shaft 41, and the limit of the expansion ring 43 on the shaft core 42 due to the matching of the expansion ring 43 and the groove is removed. An annular seam 44 is formed between the outer shaft 41 and the shaft core 42, and a tool can extend into the annular seam 44, so that the tool can expand the expansion ring 43 and the limit of the expansion ring 43 on the shaft core 42 is released. The outer shaft 41 is provided with an outer shaft ring groove 411, and the shape of the first fixing part 11 can be matched with the shape of the outer shaft ring groove 411, so that the first fixing part 11 and the outer shaft ring groove 411 are clamped and limited; the shaft core 42 is provided with a shaft core ring groove 421, and the shape of the second fixing piece 25 can be matched with the shape of the shaft core ring groove 421, so that the second fixing piece 25 and the shaft core ring groove 421 are clamped and limited.

The assembly and disassembly tools of this embodiment, but driving piece 3 manual drive moving member 2 removes, need not to set up power unit, simple structure. Of course, the driving member 3 can also rotate relative to the connecting pipe 1 under the driving of a motor or other equipment, so that automatic driving is realized, and the dismounting process is simpler, more convenient and faster.

When the tool of the present embodiment is applied to a nuclear reactor, the structure of the shaft assembly 4 in fig. 3 is taken as an example of a structure of a driving shaft in the nuclear reactor, and the tool is taken as an example of the tool for attaching and detaching the driving shaft.

Referring to fig. 4, in the nuclear reactor, the driving shaft includes a shaft core and an outer shaft, and the driving shaft and the control rod assembly can be disassembled and assembled by disassembling and assembling the shaft core and the outer shaft of the driving shaft and moving the shaft core. The outer shaft 41 and the shaft core 42 fixed through the expansion ring 43 are inserted into the connecting pipe 1, one end of the shaft core 42 is inserted into the cavity 24 of the moving part 2, the outer shaft 41 is sleeved outside the shaft core 42, the other end of the shaft core 42 is connected with a coupling mechanism, the coupling mechanism is provided with a clamping structure for clamping and fixing a control rod, and the shaft core 42 moves along the axial direction to drive the clamping structure to clamp or prevent looseness, so that the connection and the disassembly adjustment of the driving shaft and the control rod assembly are realized. By using the dismounting tool of the embodiment, the fixed relation between the outer shaft 41 and the shaft core 42 can be released, the shaft core 42 can be driven to move along the axial direction, and the driving shaft and the control rod assembly can be connected or dismounted when the shaft core 42 moves.

This embodiment is applicable to the dismouting that the axle subassembly is in operating condition to satisfy the state regulation with axle subassembly complex claw structure.

Next, embodiments of the driver 3 and the mover 2 are provided.

In one embodiment, as shown in fig. 1, 2, 4 and 5, the driving member 3 includes a rotating portion 31 and at least two guiding portions 32 having different distances from the rotating portion 31, the rotating portion 31 is rotatably connected to the connecting pipe 1; the moving member 2 is provided with a connecting member 21, and the connecting member 21 is connected to the guide portion 32 and is provided to be movable along the guide portion 32.

Provide power to driving piece 3, driving piece 3 pivoted in-process, guide part 32 rotates along with rotation part 31 is synchronous, because moving member 2 receives the spacing of connecting pipe 1, make the relative position of connecting piece 21 in guide part 32 of connecting piece 2 change, the distance of guide part 32 to rotation part 31 when connecting piece 21 is located changes, the position change of connecting piece 21 in connecting pipe 1, realize the axial displacement of connecting piece 21 in connecting pipe 1, the axial removal of moving member 2 along connecting pipe 1 has also been realized, moreover, the steam generator is simple in structure and easy and simple to handle.

In this embodiment, driving piece 3 converts rotation power into linear motion's power through rotation portion 31 and the cooperation of guide part 32, realizes driving piece 2 along the axial linear motion of connecting pipe 1 through driving piece 3, and is easy and simple to handle and labour saving and time saving.

Wherein, rotation portion 31 can be axle construction or pore structure, and when rotation portion 31 is axle construction, be equipped with the hole with the axle construction adaptation on connecting pipe 1, when rotation portion 31 is pore structure, set up connecting axle 12 with the pore structure adaptation on connecting pipe 1, simple structure. Referring to fig. 5, the connecting shaft 12 may be a stud bolt with both ends capable of being screwed on the connecting pipe 1, which facilitates disassembly and assembly and has a simple structure. The guide part 32 can be a guide rail, a guide groove or a guide hole; the connecting member 21 may be slidably or rollably connected to the guide portion 32, and the relative movement between the connecting member 21 and the guide portion 32 may be achieved.

In one embodiment, as shown in fig. 2, 4 and 5, the connecting member 21 includes a lever structure 211 and a roller 212 rotatably coupled to the lever structure 211, the roller 212 being coupled to the guide portion 32. The connecting piece 21 is connected with the guide part 32 in a rolling way through the roller 212, the resistance of the connecting piece 21 to moving relative to the guide part 32 is small, and the moving process is more flexible.

Wherein, both ends of the rod structure 211 are fixedly connected to the moving member 2 (on the limiting portion 22 in the following embodiments), and the rod structure 211 can be a bolt or a pin, which is convenient for disassembly and assembly and has a simple structure. The rollers 212 on the bar structure 211 may be coupled by bearings to reduce rotational friction.

In one embodiment, the connecting tube 1 and the moving member 2 are both opened with a through hole, and the driving member 3 passes through the through hole to connect with the roller 212 located in the connecting tube 1. The driving piece 3 passes through the through opening to be connected in the connecting pipe 1, and the moving piece 2 and the connecting piece 21 are both located the connecting pipe 1, and the driving piece 3 need not to be connected in the outside of connecting pipe 1, reduces the radial dimension of connecting pipe 1, helps operating in the small space.

Meanwhile, the connecting pipe 1 is provided with a first through hole 13, the moving member 2 is provided with a second through hole 221, and the driving member 3 penetrates through the first through hole 13 and the second through hole 221 so as to ensure that the driving member 3 can be stably driven. The first through hole 13 and the second through hole 221 are provided in two opposite positions so as to allow the driving member 3 to move. At this time, the roller 212 may be connected to the central position of the rod structure 211, so as to ensure that the rod structure 211 and the moving member 2 are uniformly stressed.

Of course, if the connecting pipe 1 and the moving member 2 are not provided with through holes, the driving member 3 can be disposed outside the connecting pipe 1, the connecting shaft 12 adapted to the rotating portion 31 can also extend out of the outer wall of the connecting pipe 1, and the end of the connecting member 21 extends out of the connecting pipe 1 and can move along the axial direction of the connecting pipe 1.

In one embodiment, as shown in fig. 1 and 5, at least one end of the guide portion 32 is provided with an opening 321, so that the connecting member 21 (the roller 212 in the above-mentioned embodiment) can be conveniently installed on the guide portion 32 from the position of the opening 321, and the structure is simple and the installation is convenient. The opening 321 is connected with a fixing block 33 for closing the opening 321, the fixing block 33 is limited on the outer wall of the connecting pipe 1, and the fixing block 33 closes the opening 321 to prevent the connecting piece 21 from slipping from the opening 321, so that the connecting piece 21 is ensured to stably move in the guide part 32.

Wherein, the fixed block 33 is fixedly connected on the driving member 3 through the fixing bolt 331, and the structure is simple. The other end of the guide portion 32 may be closed, or a fixing block 33 may be provided. As shown in fig. 1 and 5, the guide portion 32 has an arc-shaped long hole structure in the following embodiments, and one end of the guide portion 32 is open 321 while the other end is closed, so that the structure is simple and the processing is simple.

When the connecting pipe 1 and the moving member 2 are provided with the through holes, the fixing block 33 also plays a role in limiting, the cross section of the fixing block 33 is larger than the through holes, and the fixing block 33 limits one end of the driving member 3 on one side of the through holes.

In one embodiment, as shown in fig. 1 and 5, the guide portion 32 is configured as an arc-shaped long hole structure, and the distance from the guide portion 32 to the rotating portion 31 is gradually reduced from one end of the guide portion 32 to the other end. Guide portion 32 is arc slot hole structure, makes things convenient for connecting piece 21 and guide portion 32 cooperation installation to the radius of guide portion 32 reduces gradually, and guide portion 32 reduces gradually to the distance of rotation portion 31, and the displacement of moving member 2 changes gradually, and the removal process is more stable.

The extending path of the guide part 32 is a quarter elliptical arc, the distance from the guide part 32 to the rotating part 31 is gradually reduced from the major axis of the ellipse to the minor axis of the ellipse, the structure is simple, the processing is convenient, and the rotation is flexible.

In one embodiment, referring to fig. 2 and 5, the moving member 2 includes a stopper portion 22 and an unlocking portion 23, and an inner wall of the stopper portion 22 and an inner wall of the unlocking portion 23 form a through cavity 24 for inserting the shaft core 42. The outer wall of spacing portion 22 fits in the inner wall of connecting pipe 1 for the inner wall of connecting pipe 1 carries out spacing and direction to spacing portion 22. The unlocking portion 23 is adapted to be inserted into the annular gap 44 between the outer shaft 41 and the shaft core 42 to open the expander 43.

Wherein, the wall thickness of spacing portion 22 of moving member 2 is different with the wall thickness of unblock portion 23, and the wall thickness of unblock portion 23 is relevant with the size of circumferential weld 44, and the wall thickness of spacing portion 22 suitably increases in order to guarantee the structural strength of moving member 2. The connecting member 21 in the above embodiment is connected to the limiting portion 22, and the second fixing member 25 is also connected to the limiting portion 22, so that the structural strength of the limiting portion 22 is ensured, and the strength and the service life of the moving member 2 can be ensured.

In one embodiment, the first fixing member 11 is a bolt penetrating through the connecting pipe 1, so that the assembly and disassembly are convenient and the cost is low.

In another embodiment, the second fixing member 25 is a screw passing through the connection pipe 1 and connected to the moving member 2. The connecting pipe 1 is provided with a mounting hole 14 for the second fixing member 25 to pass through the connecting pipe 1, and the screw is screwed and fixed on the limiting part 22 of the moving member 2, so that the connection is simple and convenient to detach.

Of course, the first fixing member 11 and the second fixing member 25 are not limited to the structure using bolts or screws. The first fixing element 11 and the second fixing element 25 may also be pin shafts, or may also be in the form of a snap structure that is pressed or slidably adjusted. The first fixing member 11 and the second fixing member 25 may serve to fix the outer shaft 41 and the shaft core 42, or may have other structures capable of achieving fixing.

In the above embodiment, the first fixing members 11 are symmetrically disposed at two opposite sides of the connecting pipe 1, and the second fixing members 25 are symmetrically disposed at two sides of the moving member 2, so as to ensure that the outer shaft 41 and the shaft core 42 are uniformly stressed.

In one embodiment, as shown in fig. 1 and 5, the driving member 3 is provided with a holding portion 34 for being held by an operator, so that the operator can provide a driving force manually.

The shape of the holding part 34 is similar to the shape of a hand, so that the holding operation is convenient.

In one embodiment, as shown in fig. 1, 2 and 5, a hanging ring 15 is connected to the connecting pipe 1 to facilitate the hoisting and fixing of the connecting pipe 1.

The hanging ring 15 is fixed on the top of the connecting pipe 1 through the mounting rod 16, the mounting rod 16 can be connected to the connecting pipe 1 through threads or connected to the connecting pipe 1 through welding, and the mounting mode of the mounting rod 16 can be selected according to requirements. The hanging ring 15 and the mounting rod 16 are integrally formed or fixed by welding, so that the connection stability is ensured. The mounting rod 16 is connected to the connecting pipe 1 through threads and fixed through electric welding, and the fixing stability of the hanging ring 15 is enhanced.

In one embodiment, as shown in fig. 1 to 5, the disassembling tool includes a connecting pipe 1, a moving member 2, a driving member 3, a connecting member 21, and a hanging ring 15. Connecting pipe 1 and rings 15 fixed connection, set up connecting axle 12 on connecting pipe 1, connecting axle 12 rotates with the rotating part 31 of driving piece 3 and is connected, connects the connecting piece 21 that is equipped with gyro wheel 212 on moving member 2, and in the guide part 32 of driving piece 3 was arranged in to gyro wheel 212, through the guide part 32 to the distance restriction moving member 2 of rotating part 31 along the displacement of connecting pipe 1 axial displacement. An opening 321 is formed at one end of the guide part 32, the roller 212 is installed in the guide part 32 through the opening 321, the fixing block 33 is connected to the opening 321, and the fixing block 33 limits the rotation angle of the driving member 3. And the first fixing member 11 is coupled to the connecting pipe 1 to fix the outer shaft 41, and the second fixing member 25 is coupled to the moving member 2 to fix the shaft core 42.

When the embodiment is applied to a nuclear reactor, the driving shaft and the control rod assembly are clamped and fixed or opened and separated through the clamping structure of the coupling mechanism, the opening and closing of the clamping structure are related to the position of the shaft core 42 in the driving shaft, the shaft core 42 moves towards the direction far away from the control rod assembly, then the clamping structure is opened, the driving shaft is separated from the control rod assembly, the shaft core 42 moves towards the direction close to the control rod assembly, then the clamping structure is clamped, and the driving shaft is connected with the control rod assembly. The driving shaft comprises an outer shaft 41, a shaft core 42 and an expansion ring 43 which are shown in fig. 3, the disassembling tool of the embodiment is used in cooperation with a clamping structure, when the driving shaft and the control rod assembly need to be disassembled, the shaft core 42 needs to be disassembled from the outer shaft 41, one end of the driving shaft, which is far away from the control rod assembly, is inserted into the connecting pipe 1, the outer shaft 41 is fixed to the connecting pipe 1, the shaft core 42 is inserted into and fixed to the moving member 2, the moving member 2 releases clamping of the expansion ring 43 on the outer shaft 41 and the shaft core 42, the driving member 3 drives the moving member 2 to move along the axial direction of the connecting pipe 1, so that the shaft core 42 can independently move for preset displacement, and the clamping structure is; when the drive shaft and the control rod assembly need to be fixed, the shaft core 42 needs to move reversely for a preset distance and is fixed with the outer shaft 41, at the moment, the driving part 3 drives the moving part 2 reversely, and meanwhile, the shaft core 42 moves to drive the clamping structure to clamp and fix the control rod assembly and the drive shaft.

The disassembling tool of the embodiment can be applied to the disassembling process of the driving wire of the control rod assembly of the nuclear reactor, can manually drive the control rod assembly to be disassembled from the driving shaft, has the characteristics of simple structure and convenience in operation, and can realize engineering and productization. The embodiment not only meets the engineering application of the control rod built-in water pressure driving technology on the advanced integrated small water reactor with the thermal power of 50-300MW, but also can be applied to the dismounting process of the middle shaft assembly 4 of other equipment.

The above embodiments are merely illustrative of the present invention and are not to be construed as limiting the invention. Although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications or equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and the technical solution of the present invention is covered by the claims of the present invention.

Claims

1. The utility model provides a disassembly and assembly tool for the dismouting includes the outer axle and blocks in the axle subassembly of outer axle inner spindle core, its characterized in that includes:

2. The disassembly and assembly tool of claim 1, wherein the driving member comprises a rotating portion and at least two guiding portions having different distances from the rotating portion, the rotating portion being rotatably connected to the connecting pipe;

the moving piece is provided with a connecting piece, and the connecting piece is connected to the guide part and can move along the guide part.

3. The assembly and disassembly tool of claim 2, wherein the connecting member comprises a rod structure and a roller rotatably coupled to the rod structure, the roller being coupled to the guide portion.

4. The assembly and disassembly tool of claim 3, wherein the connecting tube and the moving member each have a through opening, and the driving member passes through the through opening to connect with the roller located in the connecting tube.

5. The disassembly and assembly tool of claim 2, wherein at least one end of the guide part is provided with an opening, the opening is connected with a fixing block for closing the opening, and the fixing block is limited on the outer wall of the connecting pipe.

6. The disassembly and assembly tool of claim 2, wherein the guide portion is configured as an arc-shaped long hole structure, and a distance from the guide portion to the rotation portion is gradually reduced from one end of the guide portion to the other end of the guide portion.

7. The disassembly and assembly tool of any one of claims 1 to 6, wherein the moving member comprises a limiting portion and the unlocking portion, the inner wall of the limiting portion and the inner wall of the unlocking portion form the through cavity, the outer wall of the limiting portion is attached to the inner wall of the connecting pipe, and the unlocking portion is suitable for being inserted into the annular seam between the outer shaft and the shaft core.

8. The disassembly and assembly tool of any one of claims 1 to 6, wherein the first fixing member is a bolt penetrating and connected to the connecting pipe;

and/or the second fixing piece is a screw which penetrates through the connecting pipe and is connected to the moving piece.

9. The setting and removing tool as claimed in any one of claims 1 to 6, wherein the driving member is provided with a gripping portion.

10. The disassembly and assembly tool of any one of claims 1 to 6, wherein a lifting ring is connected to the connecting pipe.