CN116922265A

CN116922265A - Cutting and polishing device and using method thereof

Info

Publication number: CN116922265A
Application number: CN202310850015.6A
Authority: CN
Inventors: 李淮伟; 袁林涛; 田荣; 宋水; 刘坤; 周航; 田壮
Original assignee: China Nuclear Power Operation Co Ltd
Current assignee: China Nuclear Power Operation Co Ltd
Priority date: 2023-07-12
Filing date: 2023-07-12
Publication date: 2023-10-24
Anticipated expiration: 2043-07-12
Also published as: CN116922265B

Abstract

The present application relates to a cutting and grinding device and its use method. The cutting and grinding device includes a clamping mechanism and an angle grinder. The clamping mechanism includes a first chuck, a second chuck and a locking piece. The first chuck and the second The clamps are arranged along the first direction and are used to be held on the extension joint of the finger sleeve assembly. The second clamp has a first end and a second end arranged along the second direction. The first end is connected to the first clamp. The head is rotated and connected, and the second end is locked with the first chuck through a locking piece, wherein the first direction, the second direction, and the axial direction of the casing assembly are perpendicular to each other; the angle grinder is connected to the clamping mechanism, An angle grinder is used to make cuts on finger sleeve assemblies. When using the cutting and grinding device provided by this application, you only need to use the clamping assembly to clamp the finger sleeve assembly first, and then you can operate the angle grinder for cutting. The cutting and grinding device has a simple structure and simple operating steps, which improves the efficiency of cutting. efficiency.

Description

Cutting and polishing device and using method thereof

Technical Field

The application relates to the technical field of nuclear power, in particular to a cutting and polishing device and a using method thereof.

Background

In a core neutron measurement system, a reactor core neutron measurement probe is utilized to detect the distribution of neutron flux of the core, and a thimble tube is used to provide a passageway for the reactor core neutron measurement probe. In use, it is necessary to insert portions of the finger sleeve into the interior of the fuel assembly, but the finger sleeve wears to some extent under the impact and vibration of the water flow in the reactor. In order to avoid the abrasion exceeding the standard of the finger sleeve, in the related art, a new abrasion point is generally established on the finger sleeve by adopting a pipe cutting displacement method. When the method of pipe cutting and shifting is adopted, the cutting and polishing device is needed to cut on the finger sleeve assembly, but the existing cutting and polishing device is complex in structure and complex in operation steps.

Disclosure of Invention

Based on the problems, the conventional cutting and polishing device is complex in structure and complex in operation steps, and the cutting and polishing device and the using method thereof are provided.

A cutting and grinding device, the cutting and grinding device comprising:

the clamping mechanism comprises a first chuck, a second chuck and a locking piece, wherein the first chuck and the second chuck are arranged along a first direction and are used for being clasped on an extension joint of the finger sleeve assembly, the second chuck is provided with a first end and a second end which are arranged along a second direction, the first end is rotationally connected with the first chuck, and the second end is locked with the first chuck through the locking piece, wherein the first direction, the second direction and the axial direction of the finger sleeve assembly are perpendicular to each other;

and the angle grinder is connected with the clamping mechanism and is used for cutting on the finger sleeve assembly.

In one embodiment, the cutting and polishing device further comprises a coupling mechanism comprising:

the guide rail is connected with the first chuck and extends along the second direction;

the first clamp is connected with the angle grinder, the first clamp is in sliding fit with the guide rail, and the angle grinder can move along the extending direction of the guide rail with the first clamp.

In one embodiment, the first holding clamp comprises a connecting part and a sliding part, wherein the connecting part is connected with the angle grinder, a through hole for the guide rail to pass through is formed in the sliding part, and a linear bearing is mounted on the wall of the through hole so that the through hole is in sliding fit with the guide rail.

In one embodiment, the connecting mechanism further comprises a second holding clamp, the second holding clamp and the connecting portion are oppositely arranged and connected with each other, the second holding clamp and the connecting portion are respectively provided with a containing groove, and the two containing grooves are communicated to form a mounting cavity for mounting the angle grinder.

In one embodiment, the cutting and polishing device further comprises a limiting seat arranged at one end of the guide rail, which is away from the first clamping head, and the limiting seat or the first clamping head can be abutted to the first holding clamp so as to limit the moving stroke of the first holding clamp along the second direction.

In one embodiment, the clamping mechanism further comprises a base, the first clamping head and the base are arranged along the second direction, the first clamping head is connected to one end of the guide rail, which is away from the limiting seat, through the base, and the first end of the second clamping head is rotatably connected to the base.

In one embodiment, the first chuck is provided with a dodging groove along one end of the second direction away from the base, and the locking member includes:

the locking bolt is rotationally connected to the second end of the second chuck, the axial direction of the locking bolt is parallel to the first direction, and the locking bolt can be partially accommodated in the avoidance groove;

the locking nut can be in threaded connection with the locking bolt and is abutted to the side wall of the first chuck so as to lock the first chuck and the second chuck.

In one embodiment, the angle grinder comprises a cutting blade for cutting the finger sleeve assembly, the cutting and polishing device further comprises a protective cover, the protective cover is sleeved outside the cutting blade, and an opening is formed in the protective cover and used for exposing a part of the cutting blade.

The application also provides a using method of the cutting and polishing device, which is used for cutting and polishing the finger sleeve assembly, and comprises the following steps:

s1, a first chuck and a second chuck of a clamping mechanism are clasped on an extension joint of the finger sleeve assembly and are locked by the locking piece;

s2, connecting the clamping mechanism with the angle grinder;

s3, driving the angle grinder to move so that the angle grinder cuts on the finger sleeve assembly.

In one embodiment, in step S2, the clamping mechanism is connected to the angle grinder by a connecting mechanism;

in step S3, the angle grinder is driven to move along the second direction to the vicinity of the finger sleeve assembly for cutting.

According to the cutting and polishing device, the first end of the second chuck of the clamping mechanism is rotationally connected with the first chuck, the first chuck and the second chuck are clasped on the extending joint of the finger sleeve assembly, and the first chuck and the second chuck are locked by the locking piece, so that the finger sleeve assembly is clamped, and the cutting is prevented from being influenced by shaking. The angle grinder is connected to the clamping mechanism and is used to cut at the cutting location of the finger sleeve assembly. When the cutting and polishing device provided by the application is used, the finger sleeve assembly is clamped by the clamping assembly, then the angle grinder can be operated to cut, the structure of the cutting and polishing device is simple, the operation steps are simple, and the cutting efficiency is improved.

Drawings

Fig. 1 is a schematic view of the construction of the finger sleeve assembly mentioned in the background.

Fig. 2 is a schematic structural diagram of a first view angle of the cutting and polishing device according to the present application.

Fig. 3 is a schematic structural diagram of a second view angle of the cutting and polishing device according to the present application.

Fig. 4 is a schematic structural view of a third view angle of the cutting and polishing device provided by the application.

Fig. 5 is a schematic structural diagram of a fourth view angle of the cutting and polishing device according to the present application.

Fig. 6 is a schematic structural diagram of a first holding clip provided by the present application.

Fig. 7 is a schematic structural diagram of a second holding clip provided by the present application.

Fig. 8 is a schematic structural view of the first chuck and the base according to the present application arranged along the second direction.

Fig. 9 is a schematic structural diagram of a second chuck provided by the present application.

Fig. 10 is a schematic structural view of a protective cover provided by the present application.

In the figure:

100. a finger sleeve assembly; 110. a finger sleeve; 120. an end plug; 130. a thrust section; 140. an extension joint; 150. sealing the weld; 160. butt welding;

200. a clamping mechanism; 210. a first chuck; 211. an avoidance groove; 212. a clamping groove; 220. a second chuck; 221. a first tab; 222. a second tab; 230. a locking member; 231. a locking bolt; 232. a lock nut; 240. a base;

300. an angle grinder;

400. a connecting mechanism; 410. a guide rail; 420. a first holding clamp; 421. a connection part; 422. a sliding part; 4221. a through hole; 430. a second holding clamp; 4311. a receiving groove;

500. a limit seat;

600. a protective cover; 610. an opening.

Detailed Description

In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.

In the description of the present application, it should be understood that, if any, these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., are used herein with respect to the orientation or positional relationship shown in the drawings, these terms refer to the orientation or positional relationship for convenience of description and simplicity of description only, and do not indicate or imply that the apparatus or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the application.

Furthermore, the terms "first," "second," and the like, if any, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the terms "plurality" and "a plurality" if any, mean at least two, such as two, three, etc., unless specifically defined otherwise.

In the present application, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly. For example, the two parts can be fixedly connected, detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present application, unless expressly stated or limited otherwise, the meaning of a first feature being "on" or "off" a second feature, and the like, is that the first and second features are either in direct contact or in indirect contact through 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.

It will be understood that if an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. If an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein, if any, are for descriptive purposes only and do not represent a unique embodiment.

As shown in fig. 1, the finger sleeve assembly 100 includes a finger sleeve 110, an end plug 120, a thrust section 130, and an extension joint 140, one end of the finger sleeve 110 is welded with the end plug 120 for sealing, the other end is welded with the thrust section 130, and the thrust section 130 is welded with the extension joint 140. In use, it is necessary to insert end plug 120 and portions of finger sleeve 110 into the interior of the fuel assembly, but finger sleeve 110 wears to some extent under the impact and vibration of the reactor water flow. In order to avoid the abrasion of the finger sleeve 110 exceeding the standard, in the related art, a new abrasion point is generally established on the finger sleeve 110 by a method of pipe cutting displacement.

The method for shifting the cut pipe comprises the following steps: the butt welding seam 160 of the thrust section 130 and the extension joint 140 and the sealing welding seam 150 of the thrust section 130 and the finger sleeve 110 are cut by adopting the existing cutting and polishing device, so that the finger sleeve 110, the thrust section 130 and the extension joint 140 are separated, then the corresponding length is cut according to the abrasion length of the finger sleeve 110, the unnecessary effective length of the finger sleeve is avoided to the greatest extent, and the thrust section 130 and the extension joint 140 can be reused.

Because the thrust section 130 and the extension joint 140 are made of stainless steel, the materials and the performances of the thrust section and the extension joint can be changed after being welded for a plurality of times, the thrust section and the extension joint can be generally only welded for two times, and then the thrust section and the extension joint can be not reused, when the third cutting is performed, the cutting position is determined by the area between the butt welding seam 160 and the sealing welding seam 150, and the thrust section 130 and the extension joint 140 are directly cut at the cutting position, so that the finger sleeve 110, the thrust section 130 and the extension joint 140 are separated, then the corresponding length of the cut is performed according to the abrasion length of the finger sleeve 110, and finally the brand-new thrust section 130 and the brand-new extension joint 140 are installed on the cut finger sleeve 110. However, whether two welding lines are cut respectively or finally the welding lines are cut at the cutting position, the conventional cutting and polishing device is adopted, so that the time consumption is long, the efficiency is low, and the operation is complex.

In order to solve the above problems, the present application provides a cutting and polishing apparatus, as shown in fig. 1 to 3, which includes a clamping mechanism 200 and an angle grinder 300, wherein the clamping mechanism 200 includes a first collet 210, a second collet 220, and a locking member 230, the first collet 210 and the second collet 220 are arranged along a first direction and are used to be engaged on an extension joint 140 of a finger sleeve assembly 100, the second collet 220 has a first end and a second end arranged along a second direction, the first end is rotatably connected with the first collet 210, and the second end is locked with the first collet 210 by the locking member 230, wherein the first direction, the second direction, and the axial direction of the finger sleeve assembly 100 are perpendicular to each other; an angle grinder 300 is coupled to the clamping mechanism 200, the angle grinder 300 being used to make cuts on the finger sleeve assembly 100.

In the above-mentioned cutting and polishing device, the first end of the second chuck 220 of the clamping mechanism 200 is rotatably connected with the first chuck 210, so that the first chuck 210 and the second chuck 220 are clasped on the extension joint 140 of the finger sleeve assembly 100, and the first chuck 210 and the second chuck 220 are locked by the locking member 230, thereby clamping the finger sleeve assembly 100 and preventing the shaking thereof from affecting cutting. The angle grinder 300 is connected to the clamping mechanism 200 and the angle grinder 300 is used to cut on the finger sleeve assembly 100. When the cutting and polishing device provided by the application is used, the finger sleeve assembly 100 is clamped by the clamping assembly, then the angle grinder 300 can be operated to cut, the cutting and polishing device has a simple structure, the operation steps are simple, and the cutting efficiency is improved.

In some embodiments, as shown in fig. 1-3, the cutting and polishing device further comprises a connection mechanism 400, the connection mechanism 400 comprising a rail 410 and a first clasping clip 420, the rail 410 being connected to the first collet 210, and the rail 410 extending in a second direction; the first holding clamp 420 is connected with the angle grinder 300, the first holding clamp 420 is in sliding fit with the guide rail 410, and the angle grinder 300 can move along the extending direction of the guide rail 410 with the first holding clamp 420. By extending the guide rail 410 along the second direction, and connecting one end of the guide rail 410 along the second direction to the first chuck 210, the first holding clamp 420 is slidably engaged with the guide rail 410, the clamping mechanism 200 is connected to the angle grinder 300 through the connecting mechanism 400, and the first holding clamp 420 can drive the angle grinder 300 to move along the extending direction of the guide rail 410, i.e. along the second direction, so as to define the moving direction of the angle grinder 300.

Specifically, as shown in fig. 4, 5 and 6, the first holding clamp 420 includes a connecting portion 421 and a sliding portion 422 that are connected, the connecting portion 421 is connected to the angle grinder 300, a through hole 4221 through which the guide rail 410 passes is provided on the sliding portion 422, and a linear bearing is mounted on a wall of the through hole 4221 so that the through hole 4221 and the guide rail 410 are slidably engaged. By providing the sliding portion 422, a linear bearing is mounted on a wall of the through hole 4221 of the sliding portion 422, so that sliding fit between the first holding clamp 420 and the guide rail 410 is achieved, and the sliding portion 422 is connected to the angle grinder 300 through the connection portion 421, so that connection between the first holding clamp 420 and the angle grinder 300 is achieved.

In some embodiments, as shown in fig. 4 to 6, the guide rail 410 is provided in plurality, the through hole 4221 is provided in plurality, and the plurality of through holes 4221 and the plurality of guide rails 410 are in one-to-one correspondence. For example, the guide rails 410 are provided with two through holes 4221, the guide strength is improved by providing two guide rails 410, and two through holes 4221 corresponding to the two guide rails 410 one by one are provided on the first clamp 420, thereby limiting the space between the two guide rails 410.

In some embodiments, the guide rail 410 is a polished rod, and in some embodiments, the guide rail 410 may have any structure as long as a guiding function is achieved, for example, a guide groove is provided on the guide rail 410, and a guide rod extending into the guide groove is provided on the first holding clamp 420, and when the first holding clamp 420 slides along the guide rail 410, the guide rod slides in the guide groove.

In some embodiments, as shown in fig. 4 to 7, the connection mechanism 400 further includes a second holding clamp 430, where the second holding clamp 430 and the connection portion 421 are disposed opposite to each other and connected to each other, and the second holding clamp 430 and the connection portion 421 are each provided with a receiving slot 4311, and the two receiving slots 4311 are communicated to form a mounting cavity for mounting the angle grinder. Through setting up an holding tank 4311 on the second clamp 430, set up an holding tank 4311 on connecting portion 421, thereby second clamp 430 and connecting portion 421 set up and two holding tanks 4311 intercommunication each other form the installation cavity, through setting up installation cavity installation angle mill 300, improved the connection stability of coupling mechanism 400 and angle mill 300.

In some embodiments, as shown in fig. 4 and 5, the cutting and polishing device further includes a limiting seat 500 disposed at an end of the guide rail 410 away from the first chuck 210, where the limiting seat 500 or the first chuck 210 can abut against the first holding clamp 420 to limit a movement stroke of the first holding clamp 420 along the second direction. The limiting seat 500 is connected to one end of the guide rail 410, which is away from the first chuck 210, and the limiting seat 500 and the first chuck 210 are mutually matched, so that the first holding clamp 420 is limited to move along the second direction.

In some embodiments, two guide rails 410 are provided, two limiting holes are provided on the limiting seat 500, one end of the guide rail 410, which deviates from the first chuck 210, extends into the limiting hole, the fastener penetrates through the limiting seat 500 and abuts against the outer wall of the guide rail 410, which extends into the limiting hole, and by arranging the limiting seat 500, not only is the first holding clamp 420 limited in movement along the second direction, but also the two limiting holes and the two guide rails 410 are in one-to-one correspondence, and the distance between the two guide rails 410 is further limited. More specifically, the fastener is a fastening screw or pin.

In some embodiments, as shown in fig. 5 and 8, the clamping mechanism 200 further includes a base 240, the first chuck 210 and the base 240 are arranged along the second direction, the first chuck 210 is connected to an end of the guide rail 410 away from the limiting seat 500 through the base 240, and the first end of the second chuck 220 is rotatably connected to the base 240. Through setting up base 240, first chuck 210 is connected in the one end that guide rail 410 deviates from spacing seat 500 through base 240, and base 240 and spacing seat 500 mutually support to the removal of first embracing clamp 420 along the second direction has been spacing. And a first end of the second collet 220 is rotatably coupled to the base 240 to thereby achieve a rotational fit of the first collet 210 and the second collet 220.

In some embodiments, as shown in fig. 5, 8 and 9, the first collet 210 and the second collet 220 are disposed opposite to each other in the first direction, and the first collet 210 and the second collet 220 are each provided with a clamping groove 212 for fitting with the outer circumferential surface of the extension joint 140, and when the first collet 210 and the second collet 220 are connected by the locking member 230, the groove walls of the two clamping grooves 212 abut against the extension joint 140.

Specifically, as shown in fig. 3, 5, 8 and 9, the first end of the second chuck 220 is provided with two first lugs 221 disposed at intervals along the axial direction of the finger sleeve assembly 100, a first accommodating space for accommodating the base 240 is formed between the two first lugs 221, a pin shaft hole extending along the axial direction of the finger sleeve assembly 100 is provided on the base 240, and the first rotation pin sequentially passes through one first lug 221, the pin shaft hole and the other first lug 221, so that the second chuck 220 can rotate around the first rotation pin, and the rotation fit of the first chuck 210 and the second chuck 220 is realized, so as to facilitate clamping or loosening of the finger sleeve assembly 100.

More specifically, the two ends of the first rotation pin are provided with a first shaft retainer ring, and the first shaft retainer ring is abutted against the outer wall of the side, facing away from the pin shaft hole, of the first connection lug 221, so as to prevent the first rotation pin from being separated from the second chuck 220 or the base 240.

In some embodiments, as shown in fig. 5, 8 and 9, the first chuck 210 is provided with a avoidance groove 211 at an end facing away from the base 240 along the second direction, the locking member 230 includes a locking bolt 231 and a locking nut 232, the locking bolt 231 is rotatably connected to the second end of the second chuck 220, and the axial direction of the locking bolt 231 is parallel to the first direction, and the locking bolt 231 can be partially accommodated in the avoidance groove 211; the locking nut 232 can be screwed to the locking bolt 231 and abutted against the side wall of the first collet 210 to lock the first collet 210 and the second collet 220. The locking bolt 231 is rotatably connected to the second end of the second chuck 220, and the locking bolt 231 can rotate relative to the second chuck 220, so that a part of the locking bolt 231 is accommodated in the avoidance groove 211, and then is connected to the locking bolt 231 through the locking nut 232 in a threaded manner and is abutted to the side wall of the first chuck 210, so that the first chuck 210 and the second chuck 220 are locked.

Specifically, as shown in fig. 5, 8 and 9, the second end of the second chuck 220 is provided with two second lugs 222 disposed at intervals along the axial direction of the finger sleeve assembly 100, a second accommodating space for accommodating the locking bolt 231 is formed between the two second lugs 222, a locking hole is formed on the locking bolt 231, and a second rotation pin sequentially passes through one of the second lugs 222, the locking hole and the other second lug 222, so that the locking bolt 231 can rotate around the second rotation pin, and the rotation fit of the locking bolt 231 and the second chuck 220 is realized, when the first chuck 210 and the second chuck 220 need to be locked, the locking bolt 231 is rotated to be partially located in the avoidance groove 211, and then is connected to the locking bolt 231 through the locking nut 232 in a threaded manner and is abutted against the side wall of the first chuck 210. When it is not necessary to lock the first and second chucks 210 and 220, the lock bolt 231 is rotated to be withdrawn out of the escape groove 211.

More specifically, the second rotation pin is provided with a second axial retainer ring at both ends, and the second axial retainer ring abuts against the outer wall of the side of the second lug 222 facing away from the locking hole, so as to prevent the second rotation pin from being separated from the second chuck 220 or the locking bolt 231.

In some embodiments, as shown in fig. 1, 2 and 9, the angle grinder 300 includes a cutting blade for cutting the finger sleeve assembly 100, the cutting grinding device further includes a protective cover 600, the protective cover 600 is sleeved outside the cutting blade, and an opening 610 is formed in the protective cover 600, and the opening 610 is used for exposing a portion of the cutting blade. By covering the cutting blade with the protective cover 600, the chips generated by the cutting blade cutting are prevented from splashing around. And an opening 610 is provided in the protective cover 600 to prevent the protective cover 600 from interfering with the contact of the cutting blade with the extension tab 140. Specifically, the openings 610 and the locations where cutting is desired are distributed along the second direction.

The application also provides a use method of the cutting and polishing device, which is used for cutting and polishing the finger sleeve assembly 100, and comprises the following steps:

s1, the first clamping head 210 and the second clamping head 220 of the clamping mechanism 200 are clasped on the extension joint 140 of the finger sleeve assembly 100, and the first clamping head 210 and the second clamping head 220 are locked by the locking piece 230;

s2, connecting the clamping mechanism 200 with the angle grinder 300;

s3, driving the angle grinder 300 to move so that the angle grinder 300 cuts on the finger sleeve assembly 100.

According to the application method of the cutting and polishing device provided by the application, the clamping mechanism 200 is clasped and clamped on the extension joint 140 of the finger sleeve assembly 100, the first chuck 210 and the second chuck 220 are locked by the locking piece 230, and then the clamping mechanism 200 is connected with the angle grinder 300 to drive the angle grinder 300 to move, so that cutting is performed on the finger sleeve assembly 100, and cutting operation is completed. According to the application method of the cutting and polishing device, when the device is used, the finger sleeve assembly 100 is clamped by the clamping assembly, then the angle grinder 300 can be operated to cut, the operation steps are simple, and the cutting efficiency is improved.

In some embodiments, in step S2, the clamping mechanism 200 is connected to the angle grinder 300 by a connection mechanism 400; in step S3, the angle grinder 300 is moved in the second direction to the vicinity of the finger sleeve assembly 100 for cutting. The clamping mechanism 200 is connected to the angle grinder 300 through the connecting mechanism 400, and the first holding clamp 420 can only drive the angle grinder 300 to move along the second direction because the guide rail 410 extends along the second direction, thereby defining the moving direction of the angle grinder 300.

When the above cutting polishing mechanism is used to cut the finger sleeve assembly 100, if the thrust section 130 and the extension joint 140 of the finger sleeve assembly 100 belong to the cutting after the first use, the thrust section 130 and the extension joint 140 can be reused, then:

first, clamping the finger sleeve assembly 100 to the cutting and grinding device;

next, the constructor moves the angle grinder 300 in the second direction to the vicinity of the finger sleeve assembly 100, cuts the butt welds 160 of the thrust segment 130 and the extension joint 140, and the seal welds 150 of the thrust segment 130 and the finger sleeve 110, thereby separating the finger sleeve 110, the thrust segment 130, and the extension joint 140;

then, cutting the finger sleeve 110 according to the abrasion length to avoid unnecessary effective cutting of the finger sleeve to the maximum extent;

finally, the cut thrust segment 130 and extension joint 140 are sleeved on the cut finger sleeve 100.

Because the thrust segment 130 and the extension joint 140 are made of stainless steel, the materials and the properties of the extension joint can be changed after being welded for multiple times, so that the extension joint can be welded for multiple times generally only twice, and then the extension joint is not reused, and if third cutting is needed, the extension joint is cut for the third time:

secondly, determining a position of cutting at a region between the butt weld 160 and the seal weld 150;

again, the constructor holds the angle grinder 300 to move near the finger sleeve assembly 100 along the second direction, directly cuts at the cutting position, and directly separates the finger sleeve 110, the thrust section 130 and the extension joint 140;

then, cutting corresponding length according to the abrasion length of the finger sleeve 110;

finally, a new thrust segment 130 and a new extension joint 140 are installed on the cut finger sleeve 110.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.

Claims

1. A cutting and grinding device, characterized in that the cutting and grinding device comprises:

the clamping mechanism (200) comprises a first clamping head (210), a second clamping head (220) and a locking piece (230), wherein the first clamping head (210) and the second clamping head (220) are arranged along a first direction and are used for being clasped on an extension joint (140) of the finger sleeve assembly (100), the second clamping head (220) is provided with a first end and a second end which are arranged along a second direction, the first end is rotationally connected with the first clamping head (210), and the second end is locked with the first clamping head (210) through the locking piece (230), wherein the first direction, the second direction and the axial direction of the finger sleeve assembly (100) are perpendicular to each other;

-an angle grinder (300) connected to the clamping mechanism (200), the angle grinder (300) being adapted to perform a cut on the finger sleeve assembly (100).

2. The cutting and grinding device of claim 1, further comprising a coupling mechanism (400), the coupling mechanism (400) comprising:

-a guide rail (410) connected to the first collet (210), and the guide rail (410) extends in the second direction;

the first holding clamp (420) is connected with the angle grinder (300), the first holding clamp (420) is in sliding fit with the guide rail (410), and the angle grinder (300) can move along the extending direction of the guide rail (410) with the first holding clamp (420).

3. The cutting and polishing device according to claim 2, wherein the first holding clamp (420) comprises a connecting portion (421) and a sliding portion (422) which are connected, the connecting portion (421) is connected with the angle grinder (300), a through hole (4221) for the guide rail (410) to pass through is formed in the sliding portion (422), and a linear bearing is mounted on a hole wall of the through hole (4221) so that the through hole (4221) and the guide rail (410) are in sliding fit.

4. A cutting and grinding device according to claim 3, wherein the connecting mechanism (400) further comprises a second holding clamp (430), the second holding clamp (430) and the connecting portion (421) are oppositely arranged and are mutually connected, the second holding clamp (430) and the connecting portion (421) are respectively provided with a containing groove (4311), and the two containing grooves (4311) are communicated to form a mounting cavity for mounting the angle grinder (300).

5. The cutting and grinding device of claim 2, further comprising a limiting seat (500) disposed at an end of the guide rail (410) facing away from the first collet (210), wherein the limiting seat (500) or the first collet (210) is capable of abutting against the first collet (420) to limit a movement stroke of the first collet (420) in the second direction.

6. The cutting and polishing device according to claim 5, wherein the clamping mechanism (200) further comprises a base (240), the first clamp head (210) and the base (240) are arranged along the second direction, the first clamp head (210) is connected to an end of the guide rail (410) facing away from the limiting seat (500) through the base (240), and the first end of the second clamp head (220) is rotatably connected to the base (240).

7. The cutting and grinding device of claim 6, wherein an end of the first collet (210) facing away from the base (240) in the second direction is provided with a relief groove (211), the retaining member (230) comprising:

a locking bolt (231) rotatably connected to the second end of the second chuck (220), wherein the axial direction of the locking bolt (231) is parallel to the first direction, and the locking bolt (231) can be partially accommodated in the avoidance groove (211);

and a locking nut (232) which can be connected with the locking bolt (231) in a threaded manner and is abutted against the side wall of the first chuck (210) so as to lock the first chuck (210) and the second chuck (220).

8. The cutting and grinding device according to any one of claims 1 to 7, wherein the angle grinder (300) comprises a cutting blade for cutting the finger sleeve assembly (100), the cutting and grinding device further comprises a protective cover (600), the protective cover (600) is sleeved outside the cutting blade, an opening (610) is formed in the protective cover (600), and the opening (610) is used for exposing a part of the cutting blade.

9. A method of using a cutting and grinding device according to any one of claims 1-8 to cut and grind a finger sleeve assembly (100), the method comprising:

s1, a first chuck (210) and a second chuck (220) of a clamping mechanism (200) are clasped on an extension joint (140) of the finger sleeve assembly (100), and the first chuck (210) and the second chuck (220) are locked through a locking piece (230);

s2, connecting the clamping mechanism (200) with the angle grinder (300);

s3, driving the angle grinder (300) to move so that the angle grinder (300) cuts on the finger sleeve assembly (100).

10. The method of using a cutting and grinding device according to claim 9, characterized in that in step S2, the clamping mechanism (200) is connected to the angle grinder (300) by means of a connecting mechanism (400);

in step S3, the angle grinder (300) is driven to move along a second direction to the vicinity of the finger sleeve assembly (100) for cutting.