A pipe outer surface polishing device

Abstract

The utility model relates to a pipeline outer surface polishing device belongs to mechanical processing technical field. Technical scheme is: the bottom plate (1) is pre -fixed on the pipeline outer wall (15) of waiting to polish, drives the mounting seat (2) to move left and right in the work space (25) through the rotation screw, and the polishing mechanism (4) on the mounting seat (2) polishes the pipeline outer wall (15) of waiting to polish in the work space (25), and the polishing blade (17) can make the rotary motion around the transmission rod (19), and the distance between the polishing blade (17) and the pipeline outer wall (15) of waiting to polish is adjusted through the feed adjusting mechanism (18). The utility model discloses the decoupling design of radial cutting and axial tool-feeding motion, realizes the high-precision, high-efficiency mechanized polishing of pipeline outer wall plane on portable device, effectively solves the problem of unstable quality, low efficiency and high labor intensity of traditional manual polishing, and is especially suitable for the on-site maintenance and processing of in-service pipeline.

Description

Technical Field

[0001] This utility model relates to a device for grinding the outer surface of pipes, which solves the problem of high-precision and high-efficiency milling of the outer surface of large, fixed or difficult-to-rotate pipes / cylinders. It belongs to the field of mechanical processing technology, and further relates to precision milling technology in pipe and container manufacturing, petrochemical equipment, nuclear power engineering, shipbuilding and heavy machinery industry. Background Technology

[0002] Currently, surface repair or grooving of the outer walls of fixed or large, immobile pipelines (such as nuclear power loop pipelines, subsea oil pipelines, and large reactor bodies) remains a technical challenge. Existing technologies for processing the outer walls of such fixed pipelines mainly rely on manual grinding and air gouging. Operators use angle grinders, pneumatic grinding wheels, or carbon arc gouging tools for manual processing. This method has significant drawbacks. On the one hand, the processing quality is extremely unstable, with angles and surface roughness entirely dependent on the operator's skill level and experience, making it difficult to guarantee processing accuracy and consistency. On the other hand, it is labor-intensive and inefficient, especially slowing down progress in large-scale projects. Utility Model Content

[0003] The purpose of this invention is to provide a pipe outer surface grinding device that can be stably clamped on pipes of various diameters to achieve precision milling motion around the pipe wall, complete high-quality and high-precision pipe outer wall processing, realize radial and axial feed, improve the quality and efficiency of on-site grinding operations, and solve the above-mentioned technical problems existing in the prior art.

[0004] The technical solution of this utility model is: A pipe outer surface grinding device includes a base plate, a mounting base, an adapter plate, a grinding mechanism, guide rails, sliders, a lead screw lever, and a lead screw slide. The base plate is mounted on the outer wall of the pipe to be ground. Two parallel guide rails are arranged on the base plate along the pipe axis. A working space is provided on the base plate between the two guide rails. An annular mounting base is provided in the working space, and the grinding mechanism is mounted on the inner ring of the mounting base. Sliders are matched on the two guide rails respectively, and adapter plates are provided on the sliders. The two adapter plates are respectively connected to the two sides of the outer ring of the mounting base. The outer ring of the mounting base is connected to one end of the lead screw lever. The lead screw lever is matched and connected to the lead screw slide mounted on the side of the base plate to form a lead screw mechanism. By rotating the lead screw, the mounting base is driven to move left and right in the working space, and the grinding mechanism on the mounting base grinds the outer wall of the pipe to be ground in the working space.

[0005] The grinding mechanism includes a rotary disk, grinding blades, a feed adjustment mechanism, a transmission rod, a grinding motor, and a housing. The housing is fixed on a mounting base. The output shaft of the grinding motor inside the housing is connected to the rotary disk via the transmission rod. Grinding blades are mounted on the rotary disk. The housing also has a feed adjustment mechanism to adjust the radial feed of the grinding blades. By driving the rotation of the grinding blades, the outer wall of the pipe to be ground is milled and ground. The grinding blades can rotate around the transmission rod, and the distance between the grinding blades and the outer wall of the pipe to be ground is adjusted by the feed adjustment mechanism.

[0006] The rotating disk is provided with a mounting groove, and the grinding blade is fixed in the mounting groove, with the grinding blade protruding from the lower surface of the rotating disk.

[0007] The base plate is wrapped around the outer wall of the pipe to be ground by a chain, and the base plate is fixed to the outer wall of the pipe by a fixing element and a locking nut threadedly matched; the fixing element is hinged to the chain link at the end of the chain by a pin, and the end of the pin is provided with a cotter pin for positioning to prevent the pin from coming out of the fixing element.

[0008] The chain consists of multiple chains that fix the base plate to the outer wall of the pipe to be ground.

[0009] The working space of the base plate is an oblong hole.

[0010] The lead screw slide is mounted on the side of the base plate via a slide adapter.

[0011] The feed adjustment mechanism is a known and commonly used displacement adjustment mechanism; for example, a knob-type (threaded adjustment) adjustment mechanism, etc. When the feed adjustment mechanism is rotated clockwise by external force, the grinding blade moves toward the outer wall of the pipe to be ground; conversely, when the feed adjustment mechanism is rotated counterclockwise, the grinding blade moves away from the outer wall of the pipe to be ground, thereby realizing radial feed and retraction.

[0012] The outer ring of the mounting base is provided with a mounting hole one, which is matched and connected to the mounting hole two on the adapter plate by a bolt one; the inner ring of the mounting base is provided with a mounting hole three, which is matched and connected to the mounting hole four on the outer shell by a bolt two.

[0013] This utility model is mainly used for partial grinding of the outer wall of the pipe to be ground, so as to facilitate the installation of other measuring equipment in the grinding area. This utility model can effectively and accurately grind, avoid the waste of resources caused by grinding the entire outer wall of the pipe to be ground, and effectively improve the work efficiency of grinding.

[0014] The beneficial effects of this utility model are: 1. Portable and versatile: The chain-type fixing eliminates the need for special processing or complex positioning of the pipes, adapts to different pipe diameters, and is especially suitable for on-site operations.

[0015] 2. High precision: The decoupled radial and axial precision feed mechanism replaces the traditional hand-held grinding method that relies entirely on manual feel, significantly improving flatness and surface quality.

[0016] 3. High efficiency: The axial feed is smooth and continuous, and long strips of surface can be ground in one go, avoiding the joint marks of manual segmented grinding and greatly improving efficiency.

[0017] 4. High rigidity and easy operation: The device and pipeline form a rigid whole, which counteracts the grinding reaction force. The operator only needs to control the feed, resulting in low labor intensity. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model; Figure 2 This is a schematic diagram of the grinding mechanism assembly according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the chain locking part in an embodiment of this utility model; Figure 4 This is a schematic diagram of the connection between the lead lever and the lead screw slide in an embodiment of this utility model; Figure 5 This is a schematic diagram of angle measurement according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the parallelism test of an embodiment of this utility model; Figure 7 This is a schematic diagram of the grinding depth test according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the grinding and feeding process according to an embodiment of the present invention; Figure 9 This is a schematic diagram of the outer shell of an embodiment of this utility model; In the diagram: 1. Base plate; 2. Mounting seat; 3. Adapter plate; 4. Grinding mechanism; 5. Guide rail; 6. Slider; 7. Lead screw lever; 8. Slider slide; 9. Slide adapter; 10. Cotter pin; 11. Chain; 12. Fixing element; 13. Pin; 14. Locking nut; 15. Outer wall of the pipe to be ground; 16. Rotary disk; 17. Grinding blade; 18. Feed adjustment mechanism; 19. Transmission rod; 20. Angle measuring device; 21. Horizontal measuring device; 22. Depth measuring point one; 23. Depth measuring point two; 24. Working space; 25. Outer shell; 26. Mounting hole one; 27. Mounting hole two; 28. Mounting hole three; 29. ​​Mounting hole four; 30. Mounting groove; 31. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] A pipe outer surface grinding device includes a base plate 1, a mounting base 2, a transition plate 3, a grinding mechanism 4, guide rails 5, sliders 6, a lead lever 7, and a lead screw slide 8. The base plate 1 is mounted on the outer wall 15 of the pipe to be ground. Two parallel guide rails 5 are arranged on the base plate 1 along the pipe axis. A working space 25 is provided on the base plate 1 between the two guide rails 5. An annular mounting base 2 is provided in the working space 25. The grinding mechanism 4 is mounted on the inner ring of the mounting base 2. Sliders 6 are matched on the two guide rails 5 respectively. The sliders 6 are equipped with transition plates 3. The two transition plates 3 are respectively connected to the two sides of the outer ring of the mounting base 2. The outer ring of the mounting base 2 is connected to one end of the lead lever 7. The lead lever 7 is matched and connected to the lead screw slide 8 mounted on the side of the base plate 1 to form a lead screw mechanism. By rotating the lead screw, the mounting base 2 is driven to move left and right in the working space 25. The grinding mechanism 4 on the mounting base 2 grinds the outer wall 15 of the pipe to be ground in the working space 25.

[0021] The grinding mechanism 4 includes a rotary disk 16, a grinding blade 17, a feed adjustment mechanism 18, a transmission rod 19, a grinding motor, and a housing 26. The housing 26 is fixed on the mounting base 2. The output shaft of the grinding motor inside the housing 26 is connected to the rotary disk 16 through the transmission rod 19. The rotary disk 16 is provided with a grinding blade 17. The housing 26 is also provided with a feed adjustment mechanism 18 to adjust the radial feed of the grinding blade 17. By driving the rotation of the grinding blade (17), the outer wall 15 of the pipe to be ground is milled and ground. The grinding blade 17 can rotate around the transmission rod 19. The distance between the grinding blade 17 and the outer wall 15 of the pipe to be ground is adjusted by the feed adjustment mechanism 18.

[0022] The rotating disk 16 is provided with a mounting groove 31, and the grinding blade 17 is fixed in the mounting groove 31, with the grinding blade 17 protruding from the lower surface of the rotating disk 16.

[0023] The base plate 1 is wrapped around the outer wall 15 of the pipe to be ground by a chain 11, and the base plate 1 is fixed to the outer wall 15 of the pipe to be ground by the threaded matching of the fixing element 12 and the locking nut 14. The fixing element 12 is hinged to the chain link at the end of the chain 11 by a pin 13. The end of the pin 13 is provided with a cotter pin 10 for positioning to prevent the pin 13 from coming out of the fixing element 12.

[0024] The number of chains 11 is multiple, which fix the base plate 1 to the outer wall 15 of the pipe to be ground.

[0025] The working space 25 of the base plate 1 is an oblong hole.

[0026] In this embodiment, an angle measuring device 20 is provided on the upper surface of the base plate 1. The angle of the base plate 1 on the outer wall 15 of the pipe to be ground is adjusted according to the measurement result of the angle measuring device 20, so as to achieve grinding at any angle. The angle measuring device 20 adopts an instrument with existing mature technology, such as the LevelBox instrument manufactured by Delixi Manufacturing Co., Ltd., with a measuring range of 0-360°.

[0027] A horizontal measuring device 21 is arranged on the slide rail 5 to verify whether the base plate 1 is axially parallel to the outer wall 15 of the pipe to be ground, thus achieving precise positioning. The horizontal measuring device 21 adopts an instrument with existing mature technology, such as the TLL-90S instrument manufactured by Dongguan Jingyan Instrument Technology Co., Ltd., which can measure the horizontal in multiple directions.

[0028] The working space 25 of the base plate 1 is equipped with a depth measuring device 22. The depth measuring device 22 measures the depth at depth measuring point 23 and depth measuring point 24 to calibrate the depth distance between the base plate 1 and the outer wall 15 of the pipe to be ground, ensuring consistency in grinding depth. The depth measuring device 22 uses a depth gauge with existing mature technology, such as those produced by Chengdu Xincheng Measuring Tools Co., Ltd., with a measuring range of 0-150mm.

[0029] The lead screw slide 8 is mounted on the side of the base plate 1 via a slide adapter 9.

[0030] The feed adjustment mechanism 18 is a known and commonly used displacement adjustment mechanism, such as a knob-type (threaded adjustment) adjustment mechanism. When the feed adjustment mechanism 18 is rotated clockwise by external force, the grinding blade 17 moves toward the outer wall 15 of the pipe to be ground; conversely, when the feed adjustment mechanism 18 is rotated counterclockwise, the grinding blade 17 moves away from the outer wall 15 of the pipe to be ground, thereby realizing radial feed and retraction.

[0031] The outer ring of the mounting base 2 is provided with mounting hole 27, which is matched and connected to mounting hole 28 on the adapter plate 3 by bolt 1; the inner ring of the mounting base 2 is provided with mounting hole 29, which is matched and connected to mounting hole 30 on the outer shell 26 by bolt 2.

[0032] In this embodiment, the present invention is used for partial grinding of the outer wall 15 of the pipe to be ground, so as to facilitate the installation of other measuring equipment at the grinding area. The specific steps are as follows: 1. First, the base plate 1 needs to be pre-fixed on the outer wall 15 of the pipe to be ground. Due to the constraints of the working space 25 on the base plate 1, the grinding range is any section of the outer wall 15 of the pipe to be ground in the working space 25.

[0033] 2. The pin 13 is provided with a through hole, and the pin 10 is inserted through it for axial limiting to prevent the pin 10 from coming out of the fixing element 12.

[0034] 3. The pin 13 is used to pass through the chain link at the end of the chain 11. The fixing element 12 has an external thread that mates with the locking nut 14. The chain 11 is locked by tightening the locking nut 14.

[0035] 4. After the base plate 1 is pre-fixed on the outer wall 15 of the pipe to be ground, the angle measuring device 20 can be used to adjust the base plate 1 at any angle on the outer wall 15 of the pipe to be ground, so as to realize grinding at any angle or grinding of two parallel surfaces with strict requirements.

[0036] 5. Arrange a horizontal measuring device 21 on the guide rail 5 to verify whether the base plate 1 is axially parallel to the outer wall 15 of the pipe to be ground, so as to achieve accurate positioning.

[0037] 6. Using the depth measuring device 22, the depth distance between the base plate 1 and the outer wall 15 of the pipe to be ground is compared at depth measuring point 1 23 and depth measuring point 24 respectively, to ensure the consistency of the grinding depth.

[0038] 7. The chain 11 and fixing element 12 surround the base plate 1 around the outer wall 15 of the pipe to be ground, and the base plate 1 is pre-fixed to the outer wall 15 of the pipe to be ground by the locking nut 14. The mounting base 2 is fixed to the guide rail 5 by the adapter plate 3 and the slider 6. The guide rail 5 is fixed to the base plate 1. The grinding mechanism 4 has a feed adjustment mechanism 18. By rotating the feed adjustment mechanism 18, the radial feed of the grinding blade 17 can be realized. The grinding blade 17 can be fed radially and can also rotate rapidly along the central axis of the grinding mechanism 4. The grinding mechanism 4 has a rotating disk 16 with the grinding blade 17 on it. By rotating the grinding blade 17, the outer wall 15 of the pipe to be ground is milled and ground. The transmission rod 19 is connected to the rotating disk 16.

[0039] 8. The lead lever 7 is fixed on the lead screw slide 8 and the slide adapter 9. The lead lever 7 can slide within the slide 8 and the slide adapter 9. The lead screw slide 8 and the slide adapter 9 are both arranged on one side of the base plate 1. The lead lever 7 drives the mounting base 2 to move within the working space 25 on the base plate 1.

[0040] 9. The guide rail 5 is provided with a mounting base 2, an adapter plate 3, a grinding mechanism 4 and a slider 6, which can slide on the guide rail 5.

[0041] This invention achieves high-precision and high-efficiency mechanized grinding of the outer wall surface of pipelines on a portable device by decoupling the radial cutting and axial cutting motions. It effectively solves the problems of unstable quality, low efficiency and high labor intensity of traditional manual grinding, and is particularly suitable for on-site maintenance and processing of in-service pipelines.

Claims

1. A device for grinding the outer surface of a pipe, characterized in that: The system includes a base plate (1), a mounting base (2), an adapter plate (3), a grinding mechanism (4), guide rails (5), a slider (6), a lead screw lever (7), and a lead screw slide (8). The base plate (1) is mounted on the outer wall (15) of the pipe to be ground. Two parallel guide rails (5) are arranged on the base plate (1) along the axial direction of the pipe. A working space (25) is provided on the base plate (1) between the two guide rails (5). An annular mounting base (2) is provided in the working space (25). The grinding mechanism (4) is installed on the inner ring of the mounting base (2). The two guide rails (5) are mounted on the outer wall (15) of the pipe to be ground. The rail (5) is matched with a slider (6), and the slider (6) is provided with a transition plate (3). The two transition plates (3) are connected to the two sides of the outer ring of the mounting seat (2). The outer ring of the mounting seat (2) is connected to one end of the screw lever (7). The screw lever (7) is matched and connected with the screw slide (8) installed on the side of the base plate (1) to form a screw mechanism. By rotating the screw, the mounting seat (2) is driven to move left and right in the working space (25). The grinding mechanism (4) on the mounting seat (2) grinds the outer wall (15) of the pipe to be ground in the working space (25).

2. The pipe outer surface grinding device according to claim 1, characterized in that: The grinding mechanism (4) includes a rotating disk (16), a grinding blade (17), a feed adjustment mechanism (18), a transmission rod (19), a grinding motor, and a housing (26). The housing (26) is fixed on the mounting base (2). The output shaft of the grinding motor inside the housing (26) is connected to the rotating disk (16) through the transmission rod (19). The rotating disk (16) is provided with a grinding blade (17). The housing (26) is also provided with a feed adjustment mechanism (18) to adjust the radial feed of the grinding blade (17). By driving the rotation of the grinding blade (17), the outer wall (15) of the pipe to be ground is milled and ground.

3. The pipe outer surface grinding device according to claim 2, characterized in that: The rotating disk (16) is provided with a mounting groove (31), and the grinding blade (17) is fixed in the mounting groove (31) and the grinding blade (17) protrudes from the lower surface of the rotating disk (16).

4. A pipe outer surface grinding device according to claim 1 or 2, characterized in that: The base plate (1) is wrapped around the outer wall (15) of the pipe to be ground by a chain (11). The base plate (1) is fixed to the outer wall (15) of the pipe to be ground by the thread matching of the fixing element (12) and the locking nut (14). The fixing element (12) is hinged to the chain link at the end of the chain (11) by a pin (13). The end of the pin (13) is provided with a cotter pin (10) for positioning.

5. A pipe outer surface grinding device according to claim 1 or 2, characterized in that: The working space (25) of the base plate (1) is an oblong hole.

6. A pipe outer surface grinding device according to claim 1 or 2, characterized in that: The lead screw slide (8) is mounted on the side of the base plate (1) via a slide adapter (9).

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