CN111975704B

CN111975704B - Dismounting tool

Info

Publication number: CN111975704B
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: 2024-07-09
Anticipated expiration: 2040-08-27
Also published as: CN111975704A

Abstract

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

Description

Dismounting tool

Technical Field

The invention relates to the technical field of mechanical assembly tools, in particular to a disassembly and assembly tool.

Background

In the mechanical component attaching and detaching process, an attaching and detaching tool is generally required to assist. When the shaft assembly comprises a shaft core and an outer shaft sleeved and fixed on the outer side of the shaft core, the shaft core and the outer shaft are assembled and disassembled, and special tools are needed to assist.

Taking the disassembly and assembly of a control rod assembly and a driving shaft in a nuclear reactor as an example, 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 vessel, and three hydraulic cylinders are adopted to sequentially drive and transmit and clamp two sets of control rod assemblies to move so as to realize the functions of step-up, step-down and rod-dropping of the control rod assemblies. In the process of installing the control rod driving wire, how to conveniently and rapidly disassemble and assemble the driving shaft to be matched with the detachable connecting mechanism becomes a problem which puzzles the technical staff. And in the related art of mechanical component assembly, no tool suitable for assembling and disassembling the connection relationship between the cross wing control rod assembly and the driving shaft has been found.

Disclosure of Invention

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

According to an embodiment of the present invention, a disassembly tool for disassembling a shaft assembly including an outer shaft and an inner shaft core fastened to the outer shaft, includes:

A connection pipe 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 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 so as to switch the moving piece between an installation position close to the first fixing piece and a disassembly position far away from the first fixing piece; in the installation position, the unlocking part is used for being inserted into the shaft assembly to release the clamping of the outer shaft and the shaft core.

According to one embodiment of the invention, the driving member comprises a rotating part and a guiding part with at least two positions having different distances from the rotating part, and the rotating part is rotatably connected to the connecting pipe; the movable part is provided with a connecting piece, and the connecting piece is connected with the guide part and is arranged to be movable along the guide part.

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

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

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

According to one embodiment of the present invention, the guide portion is provided in an arc-shaped long hole structure, and the 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 one embodiment of the invention, the moving member comprises a limiting part and an unlocking part, wherein the inner wall of the limiting part and the inner wall of the unlocking part form a through cavity, the outer wall of the limiting part is attached to the inner wall of the connecting pipe, and the unlocking part is suitable for being inserted into a circular seam between the outer shaft and the shaft core.

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

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

According to one embodiment of the invention, the connecting pipe is connected with a hanging ring.

The above technical solutions in the embodiments of the present invention have at least one of the following technical effects:

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

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 invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a disassembly tool according to an embodiment of the present invention;

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

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

FIG. 4 is a schematic view of the structure of the mounting shaft assembly of the disassembly tool according to the embodiment of the invention;

Fig. 5 is a schematic view of an exploded view of a disassembly tool according to an embodiment of the present invention.

Reference numerals:

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

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

3: a driving member; 31: a rotating part; 32: a guide part; 321: an opening; 33: a fixed block; 331: a fixing 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: an expansion ring; 44: and (5) circular seam.

Detailed Description

Embodiments of the present invention are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of 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 directions or positional relationships indicated by the terms "center", "upper", "lower", "top", "bottom", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience in describing the embodiments of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In describing embodiments of the present invention, it should be noted that, unless explicitly stated and limited otherwise, the terms "coupled," "coupled," and "connected" should be construed broadly, and may be either a fixed connection, a removable connection, or an integral connection, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in embodiments of the present invention will be understood in detail by those of ordinary skill in the art.

In embodiments of the invention, unless expressly specified and limited otherwise, a first feature "up" or "down" on a second feature may be that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means 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 the embodiments of the present invention. In this specification, schematic representations of the above terms are not necessarily directed 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, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

In one embodiment of the present invention, as shown in connection with fig. 1-5, a removal tool is provided for removing a shaft assembly 4 comprising an outer shaft 41 and an inner core 42 secured to the outer shaft 41. The assembly and disassembly tools of this embodiment include: a connecting pipe 1, a moving member 2 and a driving member 3; the connection tube 1 is provided with a first fixing piece 11 for fixing the outer shaft 41; the moving member 2 is positioned in the connection pipe 1, and the moving member 2 includes an unlocking part 23, a cavity 24 into which the shaft core 42 is inserted, and a second fixing member 25 for fixing the shaft core 42; the driving piece 3 is connected with the moving piece 2, and the driving piece 3 is used for driving the moving piece 2 to move along the axial direction of the connecting pipe 1 so as to switch the moving piece 2 between an installation position close to the first fixing piece 11 and a disassembly position far away from the first fixing piece 11; in the mounted position of the moving member 2, the unlocking portion 23 is configured to be inserted into the shaft assembly 4 to release the locking of the outer shaft 41 and the shaft core 42.

When the shaft core 42 and the outer shaft 41 need to be converted from the mounted state to the dismounted state, the shaft assembly 4, in which the shaft core 42 and the outer shaft 41 are fixed, is inserted into the connection pipe 1, wherein the outer shaft 41 is fixed to the connection pipe 1 by the first fixing member 11, the shaft core 42 is inserted into the cavity 24 of the moving member 2 and fixed to the moving member 2 by the second fixing member 25, and during the process of inserting the shaft core 42 into the cavity 24, the unlocking portion 23 of the moving member 2 is inserted between the outer shaft 41 and the shaft core 42 to release the fastening of the outer shaft 41 and the shaft core 42. After the outer shaft 41 and the shaft core 42 are fixed in the disassembly 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 disassembly position, so that the shaft core 42 moves in a direction away from the outer shaft 41 by a preset 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 mounted 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 member 3 drives the moving member 2 to move reversely, so that the shaft core 42 moves towards the direction close to the outer shaft 41 by a preset displacement, the moving member 2 moves to the installation position, the unlocking part 23 is inserted between the shaft core 42 and the outer shaft 41 again, so that the shaft core 42 and the outer shaft 41 can be installed and fixed, at the moment, the fixing relation between the shaft core 42 and the moving member 2 by the second fixing member 25 is released, the driving member 3 can drive the moving member 2 to move towards the dismounting position again, the unlocking part 23 of the moving member 2 is separated from the shaft assembly 4, the plugging and unlocking relation of the moving member 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 the outer shaft 41 is realized.

Wherein, referring to fig. 3, an embodiment of a structure of a shaft assembly 4 is provided, the shaft assembly 4 comprises an outer shaft 41, a shaft core 42 and an expansion ring 43, when the outer shaft 41 is fixed with the shaft core 42, the outer shaft 41 and the shaft core 42 are clamped by the expansion ring 43, when the outer shaft 41 and the shaft core 42 need to be disassembled, the expansion ring 43 needs to be spread so that the expansion ring 43 enters a groove of the outer shaft 41, and the limit of the expansion ring 43 and the groove matched with the shaft core 42 is released. A circumferential gap 44 is formed between the outer shaft 41 and the shaft core 42, and the circumferential gap 44 is used for a tool to extend in, so that the tool can prop up 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 annular groove 411, and the shape of the first fixing piece 11 can be matched with the shape of the outer shaft annular groove 411, so that the first fixing piece 11 and the outer shaft annular groove 411 are clamped and limited; the shaft core 42 is provided with a shaft core annular groove 421, and the shape of the second fixing piece 25 can be matched with the shape of the shaft core annular groove 421, so that the second fixing piece 25 and the shaft core annular groove 421 are clamped and limited.

In the disassembly and assembly tool of the embodiment, the driving piece 3 can manually drive the moving piece 2 to move, a power mechanism is not required, and the structure is simple. Of course, the driving piece 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 disassembly and assembly process is simpler, more convenient and quicker.

When the assembly and disassembly 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 the structure of a drive shaft in the nuclear reactor, and the assembly and disassembly tool is taken as an example of the assembly and disassembly of the drive shaft.

Referring to fig. 4, in the nuclear reactor, a drive shaft includes a core and an outer shaft, and the drive shaft and the control rod assembly are assembled and disassembled by assembling and disassembling the core and the outer shaft of the drive shaft and moving the 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 member 2, the outer shaft 41 is sleeved outside the shaft core 42, the other end of the shaft core 42 is connected with the connecting mechanism, the connecting mechanism is provided with a clamping structure for clamping and fixing the control rod, and the shaft core 42 can drive the clamping structure to clamp or prevent loosening when moving along the axial direction, 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 relieved, the shaft core 42 moves along the axial direction, and the shaft core 42 can connect or dismount the driving shaft and the control rod assembly when moving, so that the dismounting tool is simple in structure, convenient to operate and suitable for mounting and dismounting a driving wire of the built-in control rod assembly.

The embodiment is suitable for dismounting the shaft assembly in a working state so as to meet the state adjustment of the claw structure matched with the shaft assembly.

Next, embodiments of the driving member 3 and the moving member 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 a guiding portion 32 having at least two positions different from each other in distance from the rotating portion 31, and the rotating portion 31 is rotatably connected to the connection 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.

The driving piece 3 is provided with rotating power, the guide part 32 rotates synchronously with the rotating part 31 in the rotating process of the driving piece 3, and the moving piece 2 is limited by the connecting pipe 1, so that the relative position of the connecting piece 21 connected with the moving piece 2 in the guide part 32 changes, when the distance from the position of the guide part 32 where the connecting piece 21 is positioned to the rotating part 31 changes, the position of the connecting piece 21 in the connecting pipe 1 changes, and the axial movement of the connecting piece 21 in the connecting pipe 1 is realized, namely the axial movement of the moving piece 2 along the connecting pipe 1 is realized, and the structure is simple and the operation is simple.

In this embodiment, the driving member 3 converts rotational power into linear motion power through the cooperation of the rotating portion 31 and the guiding portion 32, so as to realize the linear motion of the driving member 3 driving the moving member 2 along the axial direction of the connecting tube 1, which is simple and convenient to operate, and saves time and labor.

Wherein, the rotation portion 31 can be a shaft structure or a hole structure, when the rotation portion 31 is a shaft structure, the connecting pipe 1 is provided with a hole adapted to the shaft structure, and when the rotation portion 31 is a hole structure, the connecting pipe 1 is provided with a connecting shaft 12 adapted to the hole structure, and the structure is simple. Referring to fig. 5, the connecting shaft 12 may be a stud with both ends screwed on the connecting pipe 1, which is convenient to assemble and disassemble and has a simple structure. The guide portion 32 may be a guide rail, a guide groove, or a guide hole; the connecting piece 21 can be connected to the guiding part 32 in a sliding way or in a rolling way, and the relative movement of the connecting piece 21 and the guiding part 32 can be realized.

In one embodiment, as shown in connection with fig. 2, 4 and 5, the connection 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 to the guide part 32 in a rolling way through the roller 212, the resistance of the connecting piece 21 to the movement of the guide part 32 is small, and the movement process is more flexible.

The two ends of the lever structure 211 are fixedly connected to the moving member 2 (on the limiting portion 22 in the following embodiment), and the lever structure 211 may be a bolt or a pin, so that the assembly and disassembly are convenient, and the structure is simple. The rollers 212 on the lever structure 211 may be coupled by bearings to reduce rotational friction.

In one embodiment, the connecting tube 1 and the moving member 2 are provided with through holes, and the driving member 3 passes through the through holes to be connected with the roller 212 positioned in the connecting tube 1. The driving piece 3 passes through the through hole and is connected in the connecting pipe 1, and the moving piece 2 and the connecting piece 21 are both located in the connecting pipe 1, and the driving piece 3 does not need to be connected outside the connecting pipe 1, so that the radial size of the connecting pipe 1 is reduced, and the operation in a small space is facilitated.

Meanwhile, the connecting pipe 1 is provided with a first through hole 13, the moving part 2 is provided with a second through hole 221, and the driving part 3 passes through the first through hole 13 and the second through hole 221 so as to ensure that the driving part 3 can be stably driven. Both the first through-hole 13 and the second through-hole 221 are provided to satisfy the movement of the driver 3. At this time, the roller 212 may be connected to the central position of the lever structure 211, so as to ensure that the lever structure 211 and the moving member 2 are uniformly stressed.

Of course, if the connecting tube 1 and the moving member 2 are not provided with through-holes, the driving member 3 may be provided outside the connecting tube 1, the connecting shaft 12 fitted to the rotating portion 31 may extend out of the outer wall of the connecting tube 1, and the end portion of the connecting member 21 may extend out of the connecting tube 1 and may move in the axial direction of the connecting tube 1.

In one embodiment, as shown in fig. 1 and 5, at least one end of the guiding portion 32 is provided with an opening 321, so that the connecting piece 21 (such as the roller 212 in the above embodiment) is conveniently mounted on the guiding portion 32 from the position of the opening 321, which is simple in structure and convenient to mount. The opening 321 is connected with a fixed block 33 for closing the opening 321, the fixed block 33 is limited on the outer wall of the connecting pipe 1, and the fixed 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.

The fixing block 33 is fixedly connected to the driving member 3 through a fixing bolt 331, and has a simple structure. The other end of the guide portion 32 may be a closed structure, 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 embodiment, and one end of the guide portion 32 is opened 321 and the other end is closed, so that the structure is simple and the processing is simple.

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

In one embodiment, as shown in fig. 1 and 5, the guide portion 32 is provided in an arc-shaped long hole structure, and the distance from the guide portion 32 to the rotating portion 31 gradually decreases from one end of the guide portion 32 to the other end. The guide part 32 is of an arc long hole structure, the connecting piece 21 and the guide part 32 are convenient to be matched and installed, the radius of the guide part 32 is gradually reduced, the distance from the guide part 32 to the rotating part 31 is gradually reduced, the moving distance of the moving piece 2 is gradually changed, and the moving process is more stable.

The extending path of the guiding portion 32 is a quarter elliptical arc, and the distance from the guiding portion 32 to the rotating portion 31 is gradually reduced from the major axis of the ellipse to the minor axis of the ellipse, so that 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 limiting portion 22 and an unlocking portion 23, and an inner wall of the limiting portion 22 and an inner wall of the unlocking portion 23 form a cavity 24 therethrough for inserting the shaft core 42. The outer wall of the limiting part 22 is attached to the inner wall of the connecting pipe 1, so that the inner wall of the connecting pipe 1 limits and guides the limiting part 22. The unlocking portion 23 is adapted to be inserted into a circumferential slit 44 between the outer shaft 41 and the shaft core 42 to expand the expander 43.

The wall thickness of the limiting portion 22 of the moving member 2 is different from the wall thickness of the unlocking portion 23, the wall thickness of the unlocking portion 23 is related to the size of the circumferential seam 44, and the wall thickness of the limiting portion 22 is properly increased to ensure the structural strength of the moving member 2. The connecting piece 21 in the above embodiment is connected to the limiting portion 22, and the second fixing piece 25 is also connected to the limiting portion 22, so as to ensure the structural strength of the limiting portion 22, and ensure the strength and the service life of the moving piece 2.

In one embodiment, the first fixing member 11 is a bolt penetrating through the connecting tube 1, which is convenient to assemble and disassemble and has low cost.

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

Of course, the first fixing member 11 and the second fixing member 25 are not limited to a structure using bolts or screws. The first fixing member 11 and the second fixing member 25 may also be pins, or may also be in the form of a buckle structure that is adjusted by pressing or sliding. The first fixing member 11 and the second fixing member 25 may have the function of fixing the outer shaft 41 and the shaft core 42, or may have other structures capable of achieving fixation.

In the above embodiment, the first fixing member 11 is symmetrically disposed on opposite sides of the connecting tube 1, and the second fixing member 25 is symmetrically disposed on both 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 gripping portion 34 for an operator to grip, so as to facilitate the operator to provide the driving force manually.

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

In one embodiment, as shown in fig. 1, 2 and 5, the hanging ring 15 is connected to the connecting pipe 1, so that the connecting pipe 1 is conveniently lifted and fixed.

The hanging ring 15 is fixed on the top of the connecting pipe 1 through a 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 through 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, so that the fixing stability of the hanging ring 15 is enhanced.

In one embodiment, as shown in connection with fig. 1 to 5, the dismounting tool includes a connection pipe 1, a moving member 2, a driving member 3, a connection member 21, and a hanging ring 15. The connecting pipe 1 is fixedly connected with the hanging ring 15, the connecting shaft 12 is arranged on the connecting pipe 1, the connecting shaft 12 is rotationally connected with the rotating part 31 of the driving piece 3, the moving piece 2 is connected with the connecting piece 21 provided with the roller 212, the roller 212 is arranged in the guide part 32 of the driving piece 3, and the displacement of the moving piece 2 along the axial movement of the connecting pipe 1 is limited by the distance from the guide part 32 to the rotating part 31. One end of the guide portion 32 is provided with an opening 321, the roller 212 is installed in the guide portion 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 piece 3. And the first fixing member 11 is coupled to the connection tube 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 is related to the position of the central shaft core 42 of the driving shaft, the clamping structure is opened when the central shaft core 42 moves away from the control rod assembly, the driving shaft is separated from the control rod assembly at this time, the clamping structure is clamped when the central shaft core 42 moves towards the direction close to the control rod assembly, and the driving shaft is connected with the control rod assembly at this time. The driving shaft comprises an outer shaft 41, a shaft core 42 and an expansion ring 43 shown in fig. 3, the dismounting tool of the embodiment is matched with the clamping structure for use, when the driving shaft and the control rod assembly are required to be dismounted, the shaft core 42 is required to be dismounted from the outer shaft 41, one end of the driving shaft far away from the control rod assembly is inserted into the connecting pipe 1, the outer shaft 41 is fixed in the connecting pipe 1, the shaft core 42 is inserted into and fixed in the moving member 2, the moving member 2 releases the clamping of the expansion ring 43 to the outer shaft 41 and the shaft core 42, the driving member 3 drives the moving member 2 to axially move along the connecting pipe 1 so that the shaft core 42 can independently move for preset displacement, and the clamping structure is driven to be opened in the moving process of the shaft core 42 so as to separate the control rod assembly from the driving shaft; when the driving shaft and the control rod assembly need to be fixed, the shaft core 42 needs to reversely move for a preset distance and be fixed with the outer shaft 41, at this time, the driving piece 3 reversely drives the moving piece 2, and meanwhile, the shaft core 42 moves to drive the clamping structure to clamp and fix the control rod assembly and the driving shaft.

The dismounting tool of the embodiment can be applied to the dismounting process of the control rod assembly driving line of the nuclear reactor, can manually drive the control rod assembly to be dismounted from the driving shaft, has the characteristics of simple structure and convenient operation, and can realize engineering and productization. The embodiment not only meets the engineering application of the control rod built-in hydraulic driving technology on the 50-300MW advanced integrated small-sized water reactor, but also can be applied to the disassembly and assembly process of the shaft assembly 4 of other equipment.

The above embodiments are only for illustrating the present invention, and are not limiting of the present invention. While the invention has been described in detail with reference to the embodiments, those skilled in the art will appreciate that various combinations, modifications, or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and it is intended to be covered by the scope of the claims of the present invention.

Claims

1. The utility model provides a mounting and dismounting tool for the dismouting axle subassembly, its characterized in that, the axle subassembly includes outer axle, axle core and expander, works as the outer axle with the axle core is fixed, the outer axle with the axle core passes through the expander card is solid, works as the outer axle with the axle core needs to dismantle, the expander struts, so that the expander gets into in the recess of outer axle, release the expander with the recess cooperation is right the spacing of axle core, mounting and dismounting tool includes:

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 moving piece comprises a limiting part and an unlocking part, the inner wall of the limiting part and the inner wall of the unlocking part form a through cavity, the outer wall of the limiting part is attached to the inner wall of the connecting pipe, and the unlocking part is suitable for being inserted into a circular seam between the outer shaft and the shaft core;

2. The disassembling tool according to claim 1, wherein the driving member comprises a rotating portion and a guiding portion having at least two positions different in distance from the rotating portion, the rotating portion being rotatably connected to the connecting pipe;

The movable part is provided with a connecting piece, and the connecting piece is connected with the guide part and is arranged to be movable along the guide part.

3. The assembly and disassembly tools of claim 2, wherein the connector includes a lever structure and a roller rotatably coupled to the lever structure, the roller coupled to the guide.

4. A tool according to claim 3, wherein the connecting pipe and the moving member are each provided with a through hole, and the driving member passes through the through hole to be connected with the roller in the connecting pipe.

5. The disassembling tool according to claim 2, wherein at least one end of the guiding portion is provided with an opening, a fixing block for closing the opening is connected to the opening, and the fixing block is limited on the outer wall of the connecting pipe.

6. The removing tool according to claim 2, wherein 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.

7. The assembly and disassembly tools according to any one of claims 1 to 6, wherein the first fixing member is a bolt penetrating through and connected to the connection pipe;

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

8. The removing tool according to any one of claims 1 to 6, wherein a grip portion is provided on the driving member.

9. The assembly and disassembly tools according to any one of claims 1 to 6, wherein the connection pipe is connected with a hanging ring.