Cylindrical structure outer thermal insulation layer end face polishing tool

Abstract

The utility model discloses a tool for polishing the end face of an outer heat preservation layer of a cylindrical structure, and belongs to the technical field of precision machining. The device comprises a positioning sleeve, a polishing mechanism and a measuring mechanism, the positioning sleeve is fixedly arranged on a connecting cylinder in a sleeving mode, the peripheral face of the positioning sleeve corresponds to a cylinder body, the polishing mechanism and the measuring mechanism are rotatably arranged on the positioning sleeve in a replaceable and sleeving mode, the bottom of the polishing mechanism is a polishing face, and the measuring mechanism is arranged on the polishing face. The grinding face can rotate in the circumferential direction of the outer heat preservation layer to grind the top end face of the outer heat preservation layer, and the measuring end of the measuring mechanism can abut against the top end face of the outer heat preservation layer. The grinding tool integrates an outer thermal insulation layer end face grinding function and an end face height measuring function, can accurately grind the expansion portion of the end face of the outer thermal insulation layer of the cylindrical structure, can accurately measure the height of the end face of the outer thermal insulation layer, and has the advantages of being high in accuracy, high in efficiency, good in safety and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of precision mechanical processing, and more specifically to a tool for grinding the end surface of an external thermal insulation layer of a cylindrical structure. Background Art

[0002] For cylindrical structures, such as pipes, the material of the cylindrical part is generally stainless steel, and a layer of carbon phenolic insulation material is solidified on the outer surface. The outer surface of the insulation layer is sprayed with anti-rust paint, and the connection between the two sections of the pipe is tightened by threads. For the sake of sealing and insulation effect, the two sections of the pipe are required to have no gap between the metal layers when they are connected, and a gap of 0.02-0.2mm is reserved for the insulation layer. However, after the pipeline has been used for a period of time, its outer insulation layer expands due to moisture absorption and other reasons, causing the end face of the outer insulation layer to increase in height locally, resulting in the reserved gap failing to meet the requirements. Therefore, it is necessary to use a grinding device to accurately grind the increased height portion of the end face of the outer insulation layer so that it meets the requirements of the reserved gap.

[0003] The existing grinding method is generally manual grinding, that is, manually taking sandpaper to perform local grinding on the higher parts of the end face. After grinding, a reference fixture is set on one side of the end face to be polished of the cylindrical structure, so that the reference surface of the reference fixture is flush with the end face of the metal layer of the cylindrical structure, and a feeler gauge is inserted between the reference fixture and the polished end face to measure whether the height of the polished end face meets the standard. Therefore, a complete end face grinding process requires multiple grinding and repeated measurements. The reference fixture is removed during grinding, and the reference fixture is moved back and adjusted during measurement. On the one hand, repeatedly installing the reference fixture, polishing the end face, and measuring the end face gap is time-consuming, labor-intensive and inefficient; on the other hand, the measurement using a feeler gauge has low measurement accuracy and cannot accurately grasp the degree of polishing of the end face of the outer insulation layer, which can easily cause uneven grinding or even excessive grinding, resulting in the scrapping of the structure.

[0004] Therefore, how to provide a simple and efficient grinding tool that can quickly and accurately measure the height of the external insulation layer of the cylindrical structure and quickly and accurately grind the end surface of the insulation layer is a problem that technical personnel in this field urgently need to solve. Utility Model Content

[0005] In view of this, the utility model aims to provide a simple and easy-to-operate tool for grinding the end face of the external insulation layer of a cylindrical structure, so as to at least to some extent solve the technical problems in the prior art of low grinding efficiency, difficult control of the grinding degree and inability to accurately measure the polished end face.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A tool for grinding the end face of an external thermal insulation layer of a cylindrical structure, the cylindrical structure comprising a cylindrical body and a connecting cylinder, the connecting cylinder being coaxially arranged with the cylindrical body and fixed at the top end of the cylindrical body, and the outer diameter of the connecting cylinder being smaller than the outer diameter of the cylindrical body, and the external thermal insulation layer being coated on the outer side wall of the cylindrical body; comprising: a positioning sleeve, a grinding mechanism and a measuring mechanism, the positioning sleeve being sleeved and fixed on the connecting cylinder and the outer circumference of the positioning sleeve being arranged corresponding to the cylindrical body, the grinding mechanism and the measuring mechanism being replaceably rotatably sleeved on the positioning sleeve, and the bottom of the grinding mechanism being a grinding surface, the grinding surface being rotatable along the circumferential direction of the external thermal insulation layer to grind the top end face of the external thermal insulation layer, and the measuring end of the measuring mechanism being abuttable against the top end face of the external thermal insulation layer.

[0008] The beneficial effects that can be achieved by the utility model are as follows: after the grinding tool is positioned by the positioning sleeve, the grinding mechanism or the measuring mechanism can be directly installed on the positioning sleeve for grinding or measuring, which is convenient to replace and improves the efficiency of grinding and measuring. The tool integrates the end face grinding function of the outer insulation layer and the end face height measurement function, which can not only realize the precise grinding of the end face expansion part of the outer insulation layer of the cylindrical structure, but also realize the precise measurement of the end face height of the outer insulation layer, and has the advantages of high precision, high efficiency, good safety, etc.

[0009] Preferably, the positioning sleeve includes a positioning cylinder and a positioning column. The positioning cylinder is a cylindrical structure with a closed top. The positioning cylinder is sleeved downward on the outer circumference of the connecting cylinder with its opening facing downward and the outer circumference of the positioning cylinder is arranged corresponding to the cylinder body. The positioning column is coaxially arranged with the positioning cylinder and fixed at the top center of the positioning cylinder.

[0010] Preferably, the grinding mechanism includes a grinding positioning seat and a grinding assembly, a grinding rotating hole is opened in the middle of the grinding positioning seat, the grinding positioning seat corresponds to the top of the positioning cylinder and the positioning column is rotatably connected in the grinding rotating hole; the grinding assembly is fixed to the bottom of the grinding positioning seat, and the grinding surface of the bottom of the grinding assembly is rotatably ground on the top end face of the outer insulation layer.

[0011] Preferably, a polishing handle is fixed on the top of the polishing positioning seat.

[0012] Preferably, the grinding assembly includes a plurality of grinding assemblies fixed at intervals along the outer circumferential direction of the positioning cylinder at the bottom of the grinding positioning seat, each of the grinding assemblies includes a sandpaper fixing assembly and sandpaper, the sandpaper fixing assembly is fixed to the bottom of the grinding positioning seat, the sandpaper is fixed on the sandpaper fixing assembly and the bottom of the sandpaper is the grinding surface, and the grinding surface can rotate to grind the top end surface of the outer insulation layer.

[0013] Preferably, the sandpaper fixing assembly includes a connecting block, a mounting block, a pressing block and a locking bolt, the connecting block is fixed to the bottom of the grinding positioning seat, the mounting block is fixed to the lower end of the connecting block away from the inner cavity of the grinding positioning seat, a mounting groove is opened at the top center of the mounting block, the sandpaper is wound around the mounting block to form an annular structure arranged in the axial direction along the radial direction of the grinding positioning seat, the pressing block is installed in the mounting groove and can be pressed on the top of the sandpaper, the locking bolt is arranged along the axial direction of the grinding positioning seat and its tail end passes through the pressing block and is threadedly connected to the mounting block.

[0014] Preferably, the measuring mechanism includes a measuring positioning seat and a dial indicator. A measuring rotating hole is opened in the middle of the measuring positioning seat. The positioning column is rotatably connected in the measuring rotating hole. The dial indicator is installed on the measuring positioning seat and its measuring end can abut against the top end face of the outer insulation layer.

[0015] Preferably, a measuring handle is installed on the top of the measuring and positioning seat.

[0016] Preferably, it also includes a dial indicator horizontal adjustment assembly, which includes a fixed cover, an adjusting screw, a slider and a pressure plate, wherein the fixed cover is fixed on the top of the measuring positioning seat, the axial direction of the adjusting screw is arranged along the radial direction of the positioning cylinder and is rotatably installed in the fixed cover, one end of the adjusting screw passes through one side wall of the fixed cover and is connected to the adjusting knob, and the other end is threadedly connected to the other side wall opposite to the fixed cover; the upper end of the slider is threadedly connected to the adjusting screw, and a sliding groove is provided on the top of the measuring positioning seat, which is arranged along the radial direction of the positioning cylinder in its length direction, the top of one side end of the pressure plate is fixed to the bottom end of the slider, and the bottom is slidably connected to the sliding groove, and the other side end extends to the outside of the positioning cylinder, and the dial indicator is installed on the other side end of the pressure plate.

[0017] Preferably, it also includes a dial indicator height adjustment assembly, which includes an adjusting rod, a fastening bolt and a chuck. The other side end of the pressure plate is provided with an adjustment hole that passes through the upper and lower plate surfaces thereof. The upper end of the adjusting rod is inserted into the adjustment hole. The fastening bolt is arranged perpendicular to the axial direction of the adjusting rod and is threadedly connected to the end of the pressure plate away from the end of the adjusting screw. The tail end of the fastening bolt can abut against the adjusting rod to fix the adjusting rod. The chuck is fixed to the lower end of the adjusting rod, and the chuck is provided with a clamping groove for clamping the dial indicator.

[0018] It can be seen from the above technical solution that, compared with the prior art, the utility model discloses a tool for grinding the end surface of the external insulation layer of a cylindrical structure, which has the following beneficial effects:

[0019] 1. This tool integrates the end face grinding and end face height measurement of the external insulation layer. It can not only realize the precise grinding of the end face expansion part of the external insulation layer of the cylindrical structure, but also realize the precise measurement of the end face height of the external insulation layer. It has the advantages of high precision, high efficiency and good safety.

[0020] 2. This tool is positioned by a positioning sleeve, and it is convenient and quick to alternately replace the grinding mechanism and the measuring mechanism, thereby improving the grinding efficiency.

[0021] 3. The sandpaper of the grinding mechanism is firmly installed and easy to replace, which is beneficial to improving the grinding efficiency.

[0022] 4. The measuring mechanism adopts a dial indicator for measurement. The dial indicator is adjustable in multiple directions and can measure the end face without dead angle, thus improving the measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0024] Figure 1 It is a three-dimensional structural schematic diagram of a cylindrical structure external insulation layer end surface grinding tool in a grinding state provided by the utility model.

[0025] Figure 2 It is a three-dimensional structural schematic diagram of a cylindrical structure external insulation layer end surface grinding tooling in a measuring state provided by the utility model.

[0026] Figure 3 The utility model provides a schematic diagram of the cross-sectional structure of a cylindrical structure external insulation layer end surface grinding tool in a grinding state.

[0027] Figure 4 This is a schematic diagram of the three-dimensional structure of the positioning sleeve provided by the utility model.

[0028] Figure 5 This is a schematic diagram of the three-dimensional structure of the grinding mechanism provided by the utility model.

[0029] Figure 6 This is a schematic diagram of the main structure of the grinding mechanism provided by the utility model.

[0030] Figure 7 This is a three-dimensional structural schematic diagram of the measuring mechanism provided by the utility model.

[0031] Figure 8 This is a schematic diagram of the main structure of the measuring mechanism provided by the utility model when the fixed cover is removed.

[0032] Fig. 9 The present invention is a schematic diagram of the three-dimensional structure of the measuring and positioning seat provided by the utility model.

[0033] In the figure:

[0034] 1. a cylindrical structure, 11. a cylinder, 12. a connecting cylinder;

[0035] 2. External insulation layer;

[0036] 3. Positioning sleeve, 31. Positioning cylinder, 32. Positioning column;

[0037] 4. grinding mechanism, 41. grinding positioning seat, 411. grinding rotating hole, 42. grinding assembly, 421. sandpaper fixing assembly, 422. sandpaper, 4211. connecting block, 4212. mounting block, 4213. pressing block, 4214. locking bolt, 43. grinding handle;

[0038] 5. Measuring mechanism, 51. Measuring positioning seat, 511. Measuring rotating hole, 512. Slide slot, 52. Dial indicator, 53. Measuring handle, 54. Dial indicator horizontal adjustment assembly, 541. Fixed cover, 542. Adjusting screw, 543. Sliding block, 544. Pressing plate, 55. Dial indicator height adjustment assembly, 551. Adjusting rod, 552. Fastening bolt, 553. Chuck; DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0040] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0041] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] The cylindrical structure 1 includes a cylindrical body 11 and a connecting cylinder 12 which are integrally connected. The connecting cylinder 12 is coaxially arranged with the cylindrical body 11 and fixed at the top of the cylindrical body 11 . The outer diameter of the connecting cylinder 12 is smaller than that of the cylindrical body 11 . The outer insulation layer 2 is coated on the outer wall of the cylindrical body 11 .

[0043] See also Figure 1-Figure 9 The embodiment of the utility model discloses a cylindrical structure external insulation layer end surface grinding tool, including: a positioning sleeve 3, a grinding mechanism 4 and a measuring mechanism 5, the positioning sleeve 3 is sleeved and fixed on the connecting tube 12 and the outer circumference of the positioning sleeve 3 is arranged corresponding to the cylinder body 11, the grinding mechanism 4 and the measuring mechanism 5 are replaceably rotatably sleeved on the positioning sleeve 3, and the bottom of the grinding mechanism 4 is a grinding surface, which can be rotated along the circumferential direction of the external insulation layer 2 to grind the top end surface of the external insulation layer 2, and the measuring end of the measuring mechanism 5 can abut against the top end surface of the external insulation layer 2.

[0044] The present grinding tool is positioned by the positioning sleeve 3, and then the grinding mechanism 4 or the measuring mechanism 5 can be directly replaced and installed on the positioning sleeve 3 for grinding or measuring. The replacement and installation are convenient. The present tool integrates the end face grinding function of the outer insulation layer 2 and the end face height measurement function, and can realize the precise grinding of the end face expansion part of the outer insulation layer 2 of the tubular structure 1 and the precise measurement of the end face height of the outer insulation layer 2, and has the advantages of high precision, high efficiency and good safety.

[0045] In one specific embodiment, see Figure 3-Figure 4 The positioning sleeve 3 includes a positioning cylinder 31 and a positioning column 32. The positioning cylinder 31 is a cylindrical structure with a closed top. The positioning cylinder 31 is sleeved on the outer circumference of the connecting cylinder 12 with its opening facing downward, and the outer circumference of the positioning cylinder 31 is arranged corresponding to the cylinder body 11, that is, the outer diameter of the positioning cylinder 31 should be less than or equal to the inner diameter of the outer insulation layer 2 to prevent the end surface of the outer insulation layer 2 to be polished from being blocked; the positioning column 32 is coaxially arranged with the positioning cylinder 31 and integrally connected and fixed at the top center of the positioning cylinder 31. The connecting cylinder 12 of the pipeline is generally provided with an external thread, and the positioning cylinder 31 is provided with an internal thread, which is connected to the pipeline by a thread. In some other embodiments, the positioning cylinder 31 can also be fixed to the connecting cylinder 12 by screws. The upper end of the positioning column 32 is a tapered columnar structure with a diameter gradually increasing from top to bottom, which is convenient for installing a polishing mechanism or a measuring mechanism.

[0046] In one specific embodiment, see Figure 5-Figure 6 The grinding mechanism 4 includes a grinding positioning seat 41 and a grinding assembly 42. A grinding rotation hole 411 is opened in the middle of the grinding positioning seat 41. The grinding positioning seat 41 corresponds to the top of the positioning cylinder 31, and the positioning column 32 is rotatably connected in the grinding rotation hole 411 through a bearing; the grinding assembly 42 is fixed to the bottom of the grinding positioning seat 41, and the grinding surface at the bottom of the grinding assembly 42 is rotatably ground on the top end surface of the outer thermal insulation layer 2. The rotation of the grinding positioning seat 41 drives the grinding assembly 42 to rotate, so as to grind the top end surface of the outer thermal insulation layer 2.

[0047] In a specific embodiment, a grinding handle 43 is fixed on the top of the grinding positioning seat 41. The grinding positioning seat 41 can be rotated by holding the grinding handle 43.

[0048] In a specific embodiment, the grinding assembly 42 includes a plurality of grinding assemblies evenly spaced and fixed at the bottom of the grinding positioning seat 41 along the outer circumferential direction of the positioning cylinder, each grinding assembly includes a sandpaper fixing assembly 421 and sandpaper 422, the sandpaper fixing assembly 421 is fixed at the bottom of the grinding positioning seat 41, the sandpaper 422 is installed on the sandpaper fixing assembly 421, and the bottom of the sandpaper 422 is a grinding surface, and the grinding surface can be rotated to grind the top end surface of the outer insulation layer 2. The width of the grinding surface of the sandpaper 422 is slightly larger than the thickness of the outer insulation layer 2 to avoid inadequate grinding of part of the end surface of the outer insulation layer 2. In use, the end surface of the outer insulation layer can be divided into a plurality of sections according to the number of grinding assemblies in the circumferential direction, and each grinding assembly corresponds to a section. According to the different heights of the end surfaces of the insulation layer in different sections, the sandpaper 422 model required for grinding the grinding assembly of the corresponding section can be selected to prevent all grinding assemblies from being installed with the same sandpaper, resulting in excessive grinding or inadequate grinding of some sections.

[0049] In a specific embodiment, the sandpaper fixing assembly 421 includes a connecting block 4211, a mounting block 4212, a pressing block 4213 and a locking bolt 4214. The connecting block 4211 is fixed to the bottom of the grinding and positioning seat 41. The mounting block 4212 is fixed to the lower end of the connecting block 4211 away from the inner cavity of the grinding and positioning seat 41. A mounting groove is provided at the top center of the mounting block 4212. The sandpaper 422 is wound around the mounting block 4212 to form an annular structure arranged along the radial direction of the grinding and positioning seat 41 in the axial direction. The pressing block 4213 is installed in the mounting groove and can be pressed on the top of the sandpaper 422. The locking bolt 4214 is arranged along the axial direction of the grinding and positioning seat 41 and its tail end passes through the pressing block 4213 and is threadedly connected to the mounting block 4212. The sandpaper 422 is fixed to the mounting block 4212 by the cooperation of the pressing block 4213 and the locking bolt 4214. The sandpaper 422 is firmly installed and easy to replace.

[0050] In one specific embodiment, see Figure 7-Figure 9The measuring mechanism 5 includes a measuring positioning seat 51 and a dial indicator 52. A measuring rotating hole 511 is provided in the middle of the measuring positioning seat 51. The positioning column 32 is rotatably connected in the measuring rotating hole 511 through a bearing. The dial indicator 52 is installed on the measuring positioning seat 51 and its measuring end can abut against the top end surface of the outer insulation layer 2. The measuring positioning seat 51 is sleeved on the positioning column 32, and the installation and positioning are convenient, and the dial indicator 52 does not need to be re-adjusted after each installation.

[0051] In a specific embodiment, a measuring handle 53 is installed on the top of the measuring and positioning seat 51. The measuring and positioning seat 51 can be rotated by holding the measuring handle 53.

[0052] In a specific embodiment, it also includes a dial indicator horizontal adjustment component 54, which includes a fixed cover 541, an adjusting screw 542, a slider 543 and a pressure plate 544. The fixed cover 541 is fixed to the top of the measuring and positioning seat 51, the axial direction of the adjusting screw 542 is arranged along the radial direction of the positioning tube 31 and is rotatably installed in the fixed cover, one end of the adjusting screw 542 passes through one side wall of the fixed cover 541 and is connected to the adjusting knob, and the other end is threadedly connected to the other side wall opposite to the fixed cover 541; the upper end of the slider 543 is threadedly connected to the adjusting screw 542, and a slide groove 512 is arranged along the radial direction of the positioning tube 31 in the length direction at the top of the measuring and positioning seat 51; the top of one side end of the pressure plate 544 is fixed to the bottom end of the slider 543, and the bottom is slidably connected in the slide groove 512, and the other side end thereof extends to the outside of the positioning tube 31, and the dial indicator 52 is installed on the other side end of the pressure plate 544. By turning the adjusting knob, the slider 543 slides along the radial direction of the positioning cylinder 31 , driving the dial indicator 52 on the pressing plate 544 to move horizontally, so as to adjust the horizontal position of the dial indicator 52 .

[0053] In a specific embodiment, a dial gauge height adjustment assembly 55 is also included, which includes an adjustment rod 551, a fastening bolt 552 and a clamp 553. The other end of the pressure plate 544 is provided with an adjustment hole that runs through the upper and lower plate surfaces thereof. The upper end of the adjustment rod 551 is inserted into the adjustment hole. The fastening bolt 552 is arranged perpendicular to the axial direction of the adjustment rod 551 and is threadedly connected to the end of the pressure plate 544 away from the end of the adjustment screw 542. The tail end of the fastening bolt 552 can abut against the adjustment rod 551 to fix the adjustment rod 551. The clamp 553 is fixed to the lower end of the adjustment rod 551, and the clamp 553 is provided with a clamping groove, and the dial gauge 52 is hinged in the clamping groove. By changing the height of the adjustment rod 551, the height of the dial gauge 52 can be adjusted.

[0054] The method of using this tool includes the following steps:

[0055] 1. Before grinding, the cylindrical structure 1 needs to be fixed with the end to be ground facing upward.

[0056] 2. Install the positioning sleeve securely on the cylindrical structure.

[0057] 3. Install the measuring locating seat on the locating sleeve, ensure that the bottom of the measuring locating seat is in full contact with the top surface of the locating sleeve, install the dial indicator on the measuring locating seat, adjust the dial indicator so that the measuring head contacts the end surface of the outer insulation layer, and press down the dial indicator to reach the set count (the count can be set to an integer, such as 1mm, 2mm, etc.).

[0058] 4. Use the measuring handle to rotate the measuring mechanism one circle. By observing the changes in the counts on the dial indicator, find the section where the end surface height of the outer insulation layer increases. Record the height change value and mark it on the periphery.

[0059] 5. Remove the measuring mechanism and ensure that the dial indicator and the measuring locating seat do not move during the disassembly process.

[0060] 6. Install the grinding mechanism equipped with sandpaper on the positioning sleeve, shake the grinding handle, and manually grind the marked area section by section with sandpaper.

[0061] 7. After grinding for a period of time, remove the grinding mechanism and reinstall the measuring mechanism.

[0062] 8. Use the measuring handle to rotate the measuring mechanism one circle, observe the changes in the count of the dial indicator, and re-measure whether the end face of the outer insulation layer meets the requirements.

[0063] 9. If the end faces of the external insulation layer meet the requirements, remove all devices and complete the grinding.

[0064] 10. If some sections of the end surface of the external insulation layer do not meet the requirements, find the sections whose height does not meet the requirements by observing the changes in the counts of the dial indicator, record the height change value, and mark the outside.

[0065] 11. Repeat the above steps and polish the marked area again until the end surface of the outer insulation layer meets the requirements.

[0066] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0067] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A tool for grinding the end surface of an outer thermal insulation layer of a cylindrical structure, the cylindrical structure (1) comprising a cylindrical body (11) and a connecting cylinder (12), the connecting cylinder (12) being coaxially arranged with the cylindrical body (11) and fixed at the top end of the cylindrical body (11), and the outer diameter of the connecting cylinder (12) being smaller than the outer diameter of the cylindrical body (11), the outer thermal insulation layer (2) being coated on the outer side wall of the cylindrical body (11); characterized in that: include: A positioning sleeve (3), a grinding mechanism (4) and a measuring mechanism (5), wherein the positioning sleeve (3) is sleeved and fixed on the connecting tube (12) and the outer circumference of the positioning sleeve (3) is arranged corresponding to the cylinder body (11); the grinding mechanism (4) and the measuring mechanism (5) are interchangeably rotatably sleeved on the positioning sleeve (3), and the bottom of the grinding mechanism (4) is a grinding surface, which can be rotated along the circumferential direction of the outer thermal insulation layer (2) to grind the top end surface of the outer thermal insulation layer (2); and the measuring end of the measuring mechanism (5) can abut against the top end surface of the outer thermal insulation layer (2).

2. The end surface grinding tool of the external thermal insulation layer of a cylindrical structure according to claim 1 is characterized in that: The positioning sleeve (3) comprises a positioning sleeve (31) and a positioning column (32); the positioning sleeve (31) is a cylindrical structure with a closed top; the positioning sleeve (31) is sleeved on the outer peripheral surface of the connecting sleeve (12) with its opening facing downward, and the outer peripheral surface of the positioning sleeve (31) is arranged corresponding to the cylinder body (11); the positioning column (32) is coaxially arranged with the positioning sleeve (31) and fixed at the top center of the positioning sleeve (31).

3. The end surface grinding tool of the external thermal insulation layer of a cylindrical structure according to claim 2 is characterized in that: The grinding mechanism (4) comprises a grinding positioning seat (41) and a grinding assembly (42); a grinding rotation hole (411) is provided in the middle of the grinding positioning seat (41); the grinding positioning seat (41) corresponds to the top of the positioning cylinder (31) and the positioning column (32) is rotatably connected in the grinding rotation hole (411); the grinding assembly (42) is fixed to the bottom of the grinding positioning seat (41), and the grinding surface of the bottom of the grinding assembly (42) is rotatably ground on the top end surface of the outer thermal insulation layer (2).

4. The tool for grinding the end surface of the external thermal insulation layer of a cylindrical structure according to claim 3, characterized in that: A grinding handle (43) is fixed on the top of the grinding positioning seat (41).

5. The tool for grinding the end surface of the external thermal insulation layer of a cylindrical structure according to claim 3, characterized in that: The grinding assembly (42) comprises a plurality of grinding assemblies fixed at intervals along the outer circumferential direction of the positioning cylinder (31) at the bottom of the grinding positioning seat (41), each of the grinding assemblies comprising a sandpaper fixing assembly (421) and sandpaper (422), the sandpaper fixing assembly (421) being fixed at the bottom of the grinding positioning seat (41), the sandpaper (422) being mounted on the sandpaper fixing assembly (421) and the bottom of the sandpaper (422) being the grinding surface, and the grinding surface being rotatable to grind the top end surface of the outer thermal insulation layer (2).

6. The tool for grinding the end surface of the external thermal insulation layer of a cylindrical structure according to claim 5, characterized in that: The sandpaper fixing assembly (421) comprises a connecting block (4211), a mounting block (4212), a pressing block (4213) and a locking bolt (4214); the connecting block (4211) is fixed to the bottom of the grinding positioning seat (41); the mounting block (4212) is fixed to the lower end of the connecting block (4211) away from the inner cavity of the grinding positioning seat (41); a mounting groove is provided at the top center of the mounting block (4212); and the sandpaper (422) is fixed to the bottom of the grinding positioning seat (41 ... The mounting block (4212) is wound around the mounting block (4212) to form an annular structure arranged in the axial direction along the radial direction of the grinding positioning seat (41); the pressing block (4213) is installed in the mounting groove and can be pressed on the top of the sandpaper (422); the locking bolt (4214) is arranged in the axial direction of the grinding positioning seat (41) and its tail end passes through the pressing block (4213) and is threadedly connected to the mounting block (4212) to press the sandpaper (422).

7. The tool for grinding the end surface of the external thermal insulation layer of a cylindrical structure according to claim 2, characterized in that: The measuring mechanism (5) comprises a measuring positioning seat (51) and a dial indicator (52); a measuring rotating hole (511) is provided in the middle of the measuring positioning seat (51); the positioning column (32) is rotatably connected in the measuring rotating hole (511); the dial indicator (52) is mounted on the measuring positioning seat (51) and a measuring end thereof can abut against the top end surface of the outer thermal insulation layer (2).

8. The tool for grinding the end surface of the external thermal insulation layer of a cylindrical structure according to claim 7, characterized in that: A measuring handle (53) is installed on the top of the measuring positioning seat (51).

9. The tool for grinding the end surface of the external thermal insulation layer of a cylindrical structure according to claim 7, characterized in that: A dial gauge level adjustment assembly (54) is also provided, the dial gauge level adjustment assembly (54) comprising a fixed cover (541), an adjustment screw (542), a slider (543) and a pressure plate (544), the fixed cover (541) being fixed to the top of the measuring positioning seat (51), the adjustment screw (542) being arranged in an axial direction along the radial direction of the positioning cylinder (31) and being rotatably mounted in the fixed cover, one end of the adjustment screw (542) passing through a side wall of the fixed cover (541) and connected to an adjustment knob, and the other end being threadedly connected to a The other side wall is opposite to the fixed cover (541); the upper end of the slider (543) is threadedly connected to the adjusting screw (542); the top of the measuring positioning seat (51) is provided with a slide groove (512) arranged in the radial direction of the positioning cylinder (31) in the length direction; the top of one side end of the pressure plate (544) is fixed to the bottom end of the slider (543), and the bottom is slidably connected in the slide groove (512), and the other side end thereof extends to the outside of the positioning cylinder (31); the dial indicator (52) is installed on the other side end of the pressure plate (544).

10. The tool for grinding the end surface of the external thermal insulation layer of a cylindrical structure according to claim 9, characterized in that: A dial gauge height adjustment assembly (55) is also provided, and the dial gauge height adjustment assembly (55) includes an adjustment rod (551), a fastening bolt (552) and a chuck (553). The other side end of the pressure plate (544) is provided with an adjustment hole that passes through the upper and lower plate surfaces thereof. The upper end of the adjustment rod (551) is inserted into the adjustment hole. The fastening bolt (552) is arranged perpendicular to the axial direction of the adjustment rod (551) and is threadedly connected to the end of the pressure plate (544) away from the end of the adjustment screw (542). The tail end of the fastening bolt (552) can abut against the adjustment rod (551) to fix the adjustment rod (551). The chuck (553) is fixed to the lower end of the adjustment rod (551), and the chuck (553) is provided with a clamping groove for clamping the dial gauge (52).

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