Cutting and polishing apparatus and method of use thereof

Abstract

The application relates to a cutting and polishing device and a use method thereof. The cutting and polishing device comprises a clamping mechanism and an angle grinder. The clamping mechanism comprises a first chuck, a second chuck and a locking piece. The first chuck and the second chuck are arranged along a first direction and are used for being clamped on an extension joint of a finger sleeve assembly. The second chuck has a first end and a second end 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. The first direction, the second direction and the axial direction of the finger sleeve assembly are perpendicular to each other. The angle grinder is connected with the clamping mechanism and is used for cutting on the finger sleeve assembly. The cutting and polishing device provided by the application is simple in structure and simple in operation steps, and the cutting efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of nuclear power technology, and in particular to a cutting and grinding device and its method of use. Background Technology

[0002] In reactor core neutron measurement systems, reactor core neutron measurement probes are used to detect the distribution of neutron flux in the reactor core. Finger sleeves provide a channel for these probes. During use, a portion of the finger sleeve needs to be inserted into the fuel assembly; however, the finger sleeve will experience wear due to the impact and vibration of the reactor's water flow. To prevent excessive wear, related technologies typically employ a cutting and repositioning method to create new wear points on the finger sleeve. This method requires cutting and grinding equipment to cut the finger sleeve assembly; however, existing cutting and grinding equipment is complex in structure and cumbersome in operation. Summary of the Invention

[0003] Therefore, it is necessary to provide a cutting and grinding device and its usage method to address the problems of complex structure and cumbersome operation of existing cutting and grinding devices.

[0004] A cutting and grinding apparatus, the cutting and grinding apparatus comprising:

[0005] The clamping mechanism includes a first clamp, a second clamp, and a locking member. The first clamp and the second clamp are arranged along a first direction and are used to engage with the extension joint of the finger sleeve assembly. The second clamp has a first end and a second end arranged along a second direction. The first end is rotatably connected to the first clamp, and the second end is locked to the first clamp by the locking member. The first direction, the second direction, and the axial direction of the finger sleeve assembly are perpendicular to each other.

[0006] An angle grinder, connected to the clamping mechanism, is used to cut on the finger sleeve assembly.

[0007] In one embodiment, the cutting and grinding device further includes a connecting mechanism, the connecting mechanism comprising:

[0008] A guide rail is connected to the first chuck, and the guide rail extends along the second direction;

[0009] A first clamp is connected to the angle grinder. The first clamp is slidably engaged with the guide rail, and the angle grinder can move along the extension direction of the guide rail with the first clamp.

[0010] In one embodiment, the first clamp includes a connecting part and a sliding part connected together. The connecting part is connected to the angle grinder, and the sliding part is provided with a through hole for the guide rail to pass through. A linear bearing is installed on the wall of the through hole so that the through hole and the guide rail slide together.

[0011] In one embodiment, the connecting mechanism further includes a second clamp, which is disposed opposite to and connected to the connecting portion. Both the second clamp and the connecting portion are provided with receiving grooves, and the two receiving grooves are connected to form a mounting cavity for mounting the angle grinder.

[0012] In one embodiment, the cutting and grinding device further includes a limiting seat disposed at one end of the guide rail away from the first chuck, the limiting seat or the first chuck being able to abut against the first clamp to limit the movement of the first clamp along the second direction.

[0013] In one embodiment, the clamping mechanism further includes a base, the first clamp and the base are arranged along the second direction, the first clamp is connected to the end of the guide rail away from the limiting seat through the base, and the first end of the second clamp is rotatably connected to the base.

[0014] In one embodiment, the first chuck has a clearance groove at one end opposite to the base along the second direction, and the locking member includes:

[0015] A locking bolt is rotatably connected to the second end of the second collet, and the axial direction of the locking bolt is parallel to the first direction. The locking bolt can be partially accommodated in the clearance groove.

[0016] A locking nut is threaded onto the locking bolt and abuts against the side wall of the first chuck to lock the first chuck and the second chuck.

[0017] In one embodiment, the angle grinder includes a cutting blade for cutting the finger sleeve assembly, and the cutting and grinding device further includes a protective cover fitted over the cutting blade, the protective cover having an opening for exposing a portion of the cutting blade.

[0018] This application also provides a method of using a cutting and grinding device, wherein the cutting and grinding device described above is used to cut and grind a finger sleeve assembly, and the method of using the cutting and grinding device includes:

[0019] S1. The first and second clamps of the clamping mechanism are engaged on the extension joint of the finger sleeve assembly and locked by the locking member;

[0020] S2. Connect the clamping mechanism and the angle grinder;

[0021] S3. Move the angle grinder so that it can cut on the finger sleeve assembly.

[0022] In one embodiment, in step S2, the clamping mechanism is connected to the angle grinder via a connecting mechanism;

[0023] In step S3, the angle grinder is moved along the second direction to the vicinity of the finger sleeve assembly for cutting.

[0024] In the aforementioned cutting and grinding device, the first end of the second chuck of the clamping mechanism is rotatably connected to the first chuck. The first and second chucks are engaged on the extension joint of the finger sleeve assembly, and the first and second chucks are locked using a locking device, thereby clamping the finger sleeve assembly and preventing it from shaking and affecting the cutting. An angle grinder is connected to the clamping mechanism, and the angle grinder is used to cut at the cutting position of the finger sleeve assembly. The cutting and grinding device provided in this application only requires clamping the finger sleeve assembly with the clamping assembly first, and then the angle grinder can be operated for cutting. The cutting and grinding device has a simple structure and simple operation steps, improving cutting efficiency. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the finger sleeve assembly mentioned in the background art.

[0026] Figure 2 This is a first-view structural schematic diagram of the cutting and grinding device provided in this application.

[0027] Figure 3 This is a structural schematic diagram of the cutting and grinding device provided in this application from a second perspective.

[0028] Figure 4 This is a structural schematic diagram of the cutting and grinding device provided in this application from a third-view perspective.

[0029] Figure 5 This is a structural schematic diagram of the cutting and grinding device provided in this application from a fourth perspective.

[0030] Figure 6 A schematic diagram of the structure of the first clamp provided in this application.

[0031] Figure 7 A schematic diagram of the structure of the second clamp provided in this application.

[0032] Figure 8 A schematic diagram of the structure provided in this application, showing the first clamp and base arranged along the second direction.

[0033] Figure 9A schematic diagram of the structure of the second clamp provided in this application.

[0034] Figure 10 This is a schematic diagram of the structure of the protective cover provided in this application.

[0035] In the picture:

[0036] 100. Finger sleeve assembly; 110. Finger sleeve; 120. End plug; 130. Thrust section; 140. Extension joint; 150. Sealing weld; 160. Butt weld;

[0037] 200 Clamping mechanism; 210 First chuck; 211 Clearance groove; 212 Clamping groove; 220 Second chuck; 221 First lug; 222 Second lug; 230 Locking element; 231 Locking bolt; 232 Locking nut; 240 Base;

[0038] 300. Angle grinder;

[0039] 400. Connecting mechanism; 410. Guide rail; 420. First clamp; 421. Connecting part; 422. Sliding part; 4221. Through hole; 430. Second clamp; 4311. Receiving groove;

[0040] 500, Limiting seat;

[0041] 600, protective cover; 610, opening. Detailed Implementation

[0042] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0043] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0044] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0045] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0046] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0047] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0048] like Figure 1As shown, 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 to the end plug 120 for sealing, and the other end is welded to the thrust section 130, which is also welded to the extension joint 140. During use, the end plug 120 and a portion of the finger sleeve 110 need to be inserted into the fuel assembly. However, the finger sleeve 110 will experience some wear due to the impact and vibration of the reactor's water flow. To prevent excessive wear of the finger sleeve 110, in related technologies, a cutting and repositioning method is typically used to create new wear points on the finger sleeve 110.

[0049] The method of cutting and relocating the tube refers to using existing cutting and grinding equipment to cut the butt weld 160 of the thrust section 130 and the extension joint 140, as well as the sealing weld 150 of the thrust section 130 and the finger sleeve 110, thereby separating the finger sleeve 110, the thrust section 130, and the extension joint 140. Then, the finger sleeve 110 is cut to the appropriate length according to the wear length of the finger sleeve 110, so as to avoid unnecessary cutting of the effective length of the finger sleeve to the greatest extent. Moreover, the thrust section 130 and the extension joint 140 can be reused.

[0050] Since the thrust section 130 and the extension joint 140 are made of stainless steel, their material and performance will change after multiple welding processes. Therefore, they can generally only be welded twice and then not reused. When making a third cut, the cutting position is determined by the area between the butt weld 160 and the sealing weld 150. The cutting is performed directly at this position to separate the finger sleeve 110, the thrust section 130, and the extension joint 140. Then, the finger sleeve 110 is cut to the appropriate length based on its wear. Finally, a new thrust section 130 and a new extension joint 140 are installed on the cut finger sleeve 110. However, whether cutting the two welds separately or making the final cut at the designated cutting position, using existing cutting and grinding equipment is time-consuming, inefficient, and cumbersome.

[0051] To address the aforementioned problems, this application provides a cutting and grinding apparatus, such as... Figures 1 to 3 As shown, the cutting and grinding device includes a clamping mechanism 200 and an angle grinder 300. The clamping mechanism 200 includes a first chuck 210, a second chuck 220, and a locking member 230. The first chuck 210 and the second chuck 220 are arranged along a first direction and are used to engage with the extension joint 140 of the finger sleeve assembly 100. The second chuck 220 has a first end and a second end arranged along a second direction. The first end is rotatably connected to the first chuck 210, and the second end is locked to the first chuck 210 by the locking member 230. The first direction, the second direction, and the axial direction of the finger sleeve assembly 100 are perpendicular to each other. The angle grinder 300 is connected to the clamping mechanism 200 and is used to cut on the finger sleeve assembly 100.

[0052] In the aforementioned cutting and grinding device, the first end of the second chuck 220 of the clamping mechanism 200 is rotatably connected to the first chuck 210, clamping the first chuck 210 and the second chuck 220 onto the extension joint 140 of the finger sleeve assembly 100. The locking member 230 locks the first chuck 210 and the second chuck 220, thereby clamping the finger sleeve assembly 100 and preventing it from shaking and affecting the cutting. An angle grinder 300 is connected to the clamping mechanism 200, and the angle grinder 300 is used to cut the finger sleeve assembly 100. The cutting and grinding device provided in this application only requires clamping the finger sleeve assembly 100 with the clamping assembly before operating the angle grinder 300 for cutting. The cutting and grinding device has a simple structure and simple operation steps, improving cutting efficiency.

[0053] In some embodiments, such as Figures 1 to 3 As shown, the cutting and grinding device also includes a connecting mechanism 400, which includes a guide rail 410 and a first clamp 420. The guide rail 410 is connected to the first chuck 210 and extends along a second direction. The first clamp 420 is connected to the angle grinder 300, and the first clamp 420 is slidably engaged with the guide rail 410, allowing the angle grinder 300 to move along the extension direction of the guide rail 410 with the first 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, and slidably engaging the first clamp 420 with the guide rail 410, the clamping mechanism 200 is connected to the angle grinder 300 through the connecting mechanism 400. The first clamp 420 can drive the angle grinder 300 to move along the extension direction of the guide rail 410, i.e., along the second direction, thereby limiting the movement direction of the angle grinder 300.

[0054] Specifically, such as Figure 4 and Figure 5 , Figure 6 As shown, the first clamp 420 includes a connecting part 421 and a sliding part 422 connected together. The connecting part 421 is connected to the angle grinder 300. The sliding part 422 is provided with a through hole 4221 for the guide rail 410 to pass through. A linear bearing is installed on the wall of the through hole 4221 to allow the through hole 4221 and the guide rail 410 to slide together. By providing the sliding part 422 and installing the linear bearing on the wall of the through hole 4221 of the sliding part 422, the sliding engagement between the first clamp 420 and the guide rail 410 is achieved. The sliding part 422 is connected to the angle grinder 300 through the connecting part 421, thereby realizing the connection between the first clamp 420 and the angle grinder 300.

[0055] In some embodiments, such as Figures 4 to 6As shown, multiple guide rails 410 and multiple through holes 4221 are provided, with each through hole 4221 corresponding to one guide rail 410. For example, two guide rails 410 and two through holes 4221 are provided. By providing two guide rails 410, the guiding strength is improved. Furthermore, the first clamp 420 is provided with two through holes 4221 that correspond one-to-one with the two guide rails 410, thereby limiting the distance between the two guide rails 410.

[0056] In some embodiments, the guide rail 410 is a smooth rod. In some embodiments, the guide rail 410 can be any structure, as long as it can achieve the guiding function. For example, the guide rail 410 is provided with a guide groove, and the first clamp 420 is provided with a guide rod extending into the guide groove. When the first clamp 420 slides along the guide rail 410, the guide rod slides in the guide groove.

[0057] In some embodiments, such as Figures 4 to 7 As shown, the connecting mechanism 400 also includes a second clamp 430. The second clamp 430 and the connecting portion 421 are disposed opposite to each other and connected to each other. Both the second clamp 430 and the connecting portion 421 are provided with receiving grooves 4311. The two receiving grooves 4311 are connected to form a mounting cavity for mounting the angle grinder. By providing a receiving groove 4311 on the second clamp 430 and a receiving groove 4311 on the connecting portion 421, and by providing a mounting cavity for mounting the angle grinder 300, the connection stability between the connecting mechanism 400 and the angle grinder 300 is improved.

[0058] In some embodiments, such as Figure 4 and Figure 5 As shown, the cutting and grinding device further includes a limiting seat 500 disposed at the end of the guide rail 410 opposite to the first chuck 210. The limiting seat 500 or the first chuck 210 can abut against the first clamp 420 to limit the movement of the first clamp 420 in the second direction. By connecting the limiting seat 500 to the end of the guide rail 410 opposite to the first chuck 210, the limiting seat 500 and the first chuck 210 cooperate with each other to limit the movement of the first clamp 420 in the second direction.

[0059] In some embodiments, two guide rails 410 are provided, and two limiting holes are provided on the limiting seat 500. The end of the guide rail 410 facing away from the first clamp 210 extends into the limiting hole. Fasteners pass through the limiting seat 500 and abut against the outer wall of the guide rail 410 extending into the limiting hole. By providing the limiting seat 500, not only is the movement of the first clamp 420 in the second direction limited, but the two limiting holes and the two guide rails 410 correspond one-to-one, further limiting the distance between the two guide rails 410. More specifically, the fasteners are fastening screws or pins.

[0060] In some embodiments, such as Figure 5 and Figure 8 As shown, the clamping mechanism 200 also includes a base 240. The first clamp 210 and the base 240 are arranged along a second direction. The first clamp 210 is connected to the end of the guide rail 410 away from the limiting seat 500 via the base 240. The first end of the second clamp 220 is rotatably connected to the base 240. By setting the base 240, the first clamp 210 is connected to the end of the guide rail 410 away from the limiting seat 500 via the base 240. The base 240 and the limiting seat 500 cooperate with each other, thereby limiting the movement of the first clamp 420 along the second direction. The first end of the second clamp 220 is rotatably connected to the base 240, thereby realizing the rotational cooperation of the first clamp 210 and the second clamp 220.

[0061] In some embodiments, such as Figure 5 , Figure 8 and Figure 9 As shown, the first clamp 210 and the second clamp 220 are arranged opposite to each other along the first direction. Both the first clamp 210 and the second clamp 220 are provided with clamping grooves 212 for adapting to the outer peripheral surface of the extension joint 140. When the first clamp 210 and the second clamp 220 are connected by the locking member 230, the groove walls of the two clamping grooves 212 abut against the extension joint 140.

[0062] Specifically, such as Figure 3 , Figure 5 , Figure 8 as well as Figure 9 As shown, the first end of the second chuck 220 is provided with two first lugs 221 spaced apart along the axial direction of the finger sleeve assembly 100. A first receiving space for accommodating the base 240 is formed between the two first lugs 221. The base 240 is provided with a pin hole extending along the axial direction of the finger sleeve assembly 100. The first rotating pin passes through one first lug 221, the pin hole, and the other first lug 221 in sequence, so that the second chuck 220 can rotate around the first rotating pin, realizing the rotational engagement of the first chuck 210 and the second chuck 220, which facilitates clamping or releasing the finger sleeve assembly 100.

[0063] More specifically, both ends of the first rotating pin are provided with a first shaft retaining ring, and the first shaft retaining ring abuts against the outer wall of the first lug 221 on the side away from the pin hole, to prevent the first rotating pin from disengaging from the second chuck 220 or the base 240.

[0064] In some embodiments, such as Figure 5 , Figure 8 as well as Figure 9As shown, the first chuck 210 has a relief groove 211 at one end 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. The locking bolt 231 can be partially accommodated in the relief groove 211. The locking nut 232 can be threaded to the locking bolt 231 and abut against the side wall of the first chuck 210 to lock the first chuck 210 and the second chuck 220. The locking bolt 231 is rotatably connected to the second end of the second chuck 220. The locking bolt 231 can rotate relative to the second chuck 220, so that part of the locking bolt 231 is accommodated in the relief groove 211. The locking nut 232 is threadedly connected to the locking bolt 231 and abuts against the side wall of the first chuck 210, thereby locking the first chuck 210 and the second chuck 220.

[0065] Specifically, such as Figure 5 , Figure 8 as well as Figure 9 As shown, the second end of the second collet 220 is provided with two second lugs 222 spaced apart along the axial direction of the finger sleeve assembly 100. A second receiving space for accommodating the locking bolt 231 is formed between the two second lugs 222. The locking bolt 231 is provided with a locking hole. The second rotating pin passes through one of the second lugs 222, the locking hole, and the other second lug 222 in sequence, so that the locking bolt 231 can rotate around the second rotating pin, realizing the rotational engagement of the locking bolt 231 and the second collet 220. When it is necessary to lock the first collet 210 and the second collet 220, the locking bolt 231 is rotated so that it is partially located in the relief groove 211, and then the locking nut 232 is threadedly connected to the locking bolt 231 and abuts against the side wall of the first collet 210. When it is not necessary to lock the first collet 210 and the second collet 220, the locking bolt 231 is rotated so that it is removed from the relief groove 211.

[0066] More specifically, both ends of the second rotating pin are provided with second shaft retaining rings, and the second shaft retaining rings abut against the outer wall of the second lug 222 on the side away from the locking hole, to prevent the second rotating pin from disengaging from the second chuck 220 or the locking bolt 231.

[0067] In some embodiments, such as Figure 1 , Figure 2 as well as Figure 9As shown, the angle grinder 300 includes a cutting blade for cutting the finger sleeve assembly 100. The cutting and grinding device also includes a protective cover 600, which is fitted over the cutting blade. The protective cover 600 has an opening 610 for exposing a portion of the cutting blade. By covering the cutting blade with the protective cover 600, debris generated during cutting is prevented from flying everywhere. The opening 610 on the protective cover 600 prevents it from interfering with the contact between the cutting blade and the extension joint 140. Specifically, the opening 610 and the area to be cut are distributed along a second direction.

[0068] This application also provides a method of using a cutting and grinding device to cut and grind the finger sleeve assembly 100. The method of using the cutting and grinding device includes:

[0069] S1. The first clamp 210 and the second clamp 220 of the clamping mechanism 200 are engaged on the extension joint 140 of the finger sleeve assembly 100, and the first clamp 210 and the second clamp 220 are locked by the locking member 230.

[0070] S2. Connect the clamping mechanism 200 and the angle grinder 300;

[0071] S3. Move the angle grinder 300 so that the angle grinder 300 can cut on the finger sleeve assembly 100.

[0072] The cutting and grinding device provided in this application involves clamping the clamping mechanism 200 onto the extension joint 140 of the finger sleeve assembly 100, and locking the first chuck 210 and the second chuck 220 with the locking member 230. Then, the clamping mechanism 200 is connected to the angle grinder 300, causing the angle grinder 300 to move, thereby performing cutting on the finger sleeve assembly 100 and completing the cutting operation. In use, the cutting and grinding device provided in this application only requires clamping the finger sleeve assembly 100 with the clamping mechanism before operating the angle grinder 300 for cutting. The operation is simple and improves cutting efficiency.

[0073] In some embodiments, in step S2, the clamping mechanism 200 is connected to the angle grinder 300 via the connecting mechanism 400; in step S3, the angle grinder 300 is moved along 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 via the connecting mechanism 400 because the guide rail 410 extends along the second direction, and the first clamp 420 can only move the angle grinder 300 along the second direction, thus limiting the direction of movement of the angle grinder 300.

[0074] When cutting the finger sleeve assembly 100 using the aforementioned cutting and grinding mechanism, if the thrust section 130 and extension joint 140 of the finger sleeve assembly 100 are being cut after their first use, and the thrust section 130 and extension joint 140 are reusable, then:

[0075] First, clamp the finger sleeve assembly 100 onto the cutting and grinding device;

[0076] Secondly, the construction workers use an angle grinder 300 to move along the second direction to the vicinity of the finger sleeve assembly 100, and cut the butt weld 160 of the thrust section 130 and the extension joint 140, as well as the sealing weld 150 of the thrust section 130 and the finger sleeve 110, thereby separating the finger sleeve 110, the thrust section 130, and the extension joint 140.

[0077] Then, cut the finger sleeve 110 to the appropriate length according to the wear length, so as to avoid unnecessary cutting of the effective length of the finger sleeve to the greatest extent.

[0078] Finally, the cut-off thrust section 130 and extension joint 140 are fitted onto the cut finger sleeve 100.

[0079] Since the thrust section 130 and the extension joint 140 are made of stainless steel, their material and performance will change after repeated use and welding. Therefore, they can generally only be welded twice and then not reused. If a third cutting is required, then:

[0080] First, clamp the finger sleeve assembly 100 onto the cutting and grinding device;

[0081] Secondly, the cutting location is determined by the area between the butt weld 160 and the sealing weld 150;

[0082] Next, the construction workers moved the angle grinder 300 along the second direction to the vicinity of the finger sleeve assembly 100 and cut directly at the cutting position, separating the finger sleeve 110, the thrust section 130, and the extension joint 140.

[0083] Then, cut to the appropriate length according to the wear length of the finger sleeve 110;

[0084] Finally, a new thrust section 130 and a new extension joint 140 are installed on the cut finger sleeve 110.

[0085] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0086] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A cutting and grinding device, characterized in that, The cutting and grinding device includes: The clamping mechanism (200) includes a first clamp (210), a second clamp (220), and a locking member (230). The first clamp (210) and the second clamp (220) are arranged along a first direction and are used to engage with the extension joint (140) of the finger sleeve assembly (100). The second clamp (220) has a first end and a second end arranged along a second direction. The first end is rotatably connected to the first clamp (210), and the second end is locked to the first clamp (210) by the locking member (230). 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 connected to the clamping mechanism (200) and is used to cut on the finger sleeve assembly (100); The cutting and grinding device further includes a connecting mechanism (400), the connecting mechanism (400) comprising: A guide rail (410) is connected to the first chuck (210), and the guide rail (410) extends along the second direction; A first clamp (420) is connected to the angle grinder (300). The first clamp (420) is slidably engaged with the guide rail (410). The angle grinder (300) can move along the extension direction of the guide rail (410) with the first clamp (420). The cutting and grinding device also includes a limiting seat (500) disposed at one end of the guide rail (410) away from the first chuck (210); 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 the 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); The first end of the second chuck (220) is provided with two first lugs (221) spaced apart along the axial direction of the finger sleeve assembly (100). A first receiving space for accommodating the base (240) is formed between the two first lugs (221). The base (240) is provided with a pin hole extending along the axial direction of the finger sleeve assembly (100). A first rotating pin passes through one first lug (221), the pin hole, and the other first lug (221) in sequence, so that the second chuck (220) can rotate around the first rotating pin. The second end of the second collet (220) is provided with two second lugs (222) spaced apart along the axial direction of the finger sleeve assembly (100). A second receiving space for accommodating a locking bolt (231) is formed between the two second lugs (222). The locking bolt (231) is provided with a locking hole. The second rotating pin passes through one of the second lugs (222), the locking hole, and the other second lug (222) in sequence, so that the locking bolt (231) can rotate around the second rotating pin.

2. The cutting and grinding device according to claim 1, characterized in that, The first clamp (420) includes a connecting part (421) and a sliding part (422) connected to each other. The connecting part (421) is connected to the angle grinder (300). The sliding part (422) is provided with a through hole (4221) through which the guide rail (410) passes. A linear bearing is installed on the wall of the through hole (4221) so that the through hole (4221) and the guide rail (410) slide in fit.

3. The cutting and grinding device according to claim 2, characterized in that, The connecting mechanism (400) further includes a second clamp (430), which is disposed opposite to and connected to the connecting part (421). Both the second clamp (430) and the connecting part (421) are provided with receiving grooves (4311), and the two receiving grooves (4311) are connected to form a mounting cavity for mounting the angle grinder (300).

4. The cutting and grinding device according to claim 1, characterized in that, The limiting seat (500) or the first clamp (210) can abut against the first clamp (420) to limit the travel of the first clamp (420) along the second direction.

5. The cutting and grinding device according to claim 1, characterized in that, The first chuck (210) has a clearance groove (211) at one end opposite to the base (240) along the second direction, and the locking member (230) includes: A locking bolt (231) is rotatably connected to the second end of the second collet (220), and the axial direction of the locking bolt (231) is parallel to the first direction. The locking bolt (231) can be partially accommodated in the relief groove (211). A locking nut (232) is threaded to the locking bolt (231) and abuts against the side wall of the first collet (210) to lock the first collet (210) and the second collet (220).

6. The cutting and grinding device according to claim 1, characterized in that, The angle grinder (300) includes a cutting blade for cutting the finger sleeve assembly (100). The cutting and grinding device also includes a protective cover (600) that is fitted over the cutting blade. The protective cover (600) has an opening (610) for exposing a portion of the cutting blade.

7. A method of using a cutting and polishing device, wherein the cutting and polishing device according to any one of claims 1-6 is used to cut and polish a finger sleeve assembly (100), characterized in that, The method of using the cutting and grinding device includes: S1. The first clamp (210) and the second clamp (220) of the clamping mechanism (200) are engaged on the extension joint (140) of the finger sleeve assembly (100), and the first clamp (210) and the second clamp (220) are locked by the locking member (230); S2. Connect the clamping mechanism (200) and the angle grinder (300); S3. Move the angle grinder (300) so that the angle grinder (300) can cut on the finger sleeve assembly (100).

8. The method of using the cutting and grinding device according to claim 7, characterized in that, In step S2, the clamping mechanism (200) is connected to the angle grinder (300) via the connecting mechanism (400); In step S3, the angle grinder (300) is moved along the second direction to the vicinity of the finger sleeve assembly (100) for cutting.

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