Pipe anticorrosive coating peeling machine

Abstract

The application discloses a pipeline anticorrosive coating stripping machine, which comprises a main body capable of moving along the outer diameter of a pipeline and stripping the anticorrosive coating; the main body comprises a walking mechanism capable of ensuring the circumferential movement of the main body; the main body comprises a cutting mechanism capable of stripping the anticorrosive coating of the pipeline; the main body comprises a rack for providing support for each mechanism; the walking mechanism is arranged on the rack; and the cutting mechanism is arranged on the rack. Compared with the prior art, the pipeline anticorrosive coating stripping machine has the advantages of fast stripping speed, stable stripping process, fast cutter replacement, light weight and portability, and can effectively solve the problem of stripping the anticorrosive coating of an oil and gas pipeline.

Description

Technical Field

[0001] This invention relates to the field of pipeline repair, and in particular to a pipeline anti-corrosion coating stripping machine. Background Technology

[0002] Defects such as damage, peeling, detachment, and aging of the anti-corrosion coating on buried pipelines can lead to corrosion, perforation, and leakage, resulting in resource waste and serious financial losses for enterprises. The anti-corrosion coating needs to be peeled off during pipeline repair work involving cutting and welding. Traditional pipeline anti-corrosion peeling machines suffer from drawbacks such as low cutting efficiency, short blade life, blade jamming, and slow blade replacement.

[0003] Therefore, there is a need to develop lightweight, fast, and portable maintenance tools to address the shortcomings of slow anti-corrosion coating peeling speed and easy equipment damage during maintenance operations. A pipeline anti-corrosion coating peeling machine is urgently needed to solve these problems. Summary of the Invention

[0004] In view of the above shortcomings, this application provides a pipeline anti-corrosion coating stripping machine, which can effectively solve the problem of anti-corrosion coating stripping in oil and gas pipelines.

[0005] To solve the above-mentioned technical problems, this application adopts the following technical solution: a pipeline anti-corrosion coating stripping machine, comprising: a main body that can move circumferentially along the outer diameter of the pipeline and strip the anti-corrosion coating; the main body includes a traveling mechanism that can ensure the circumferential movement of the pipeline anti-corrosion coating stripping machine; the main body includes a cutting mechanism that can strip the pipeline anti-corrosion coating; the main body includes a frame that provides support for each mechanism; the traveling mechanism is mounted on the frame; the cutting mechanism is mounted on the frame; the main body is made of a rigid material.

[0006] The traveling mechanism includes a feed motor that provides power for the circumferential movement of the main body of the pipe anti-corrosion coating stripping machine, and toothed wheels and toothed belts for transmitting power; the traveling mechanism includes two driving top wheel shafts and four driving wheels; the traveling mechanism includes four driven shafts and four driven wheels; the traveling mechanism includes a pair of toothed wheels and a toothed belt between the two driving top wheel shafts; the four driving wheels, four driven wheels, and related structures are symmetrically distributed on both sides of the frame; the four driving wheels are sleeved on both ends of the two driving top wheel shafts; the four driven wheels are sleeved on the four driven shafts; the driven wheels and driven shafts are located at the lower part of the frame and can move circumferentially along the pipe; the traveling mechanism includes a pair of toothed wheels and a toothed belt between the two driving top wheel shafts; the traveling mechanism includes a chain tensioning mechanism for ensuring that the equipment is tightly attached to the pipe.

[0007] In a preferred embodiment, the feed motor is fixed to the motor mounting bracket, and the feed motor is fixed to the motor mounting bracket by multiple bolts; the motor mounting bracket is fixed to the mounting plate by multiple evenly arranged bolts; the frame mounting plate is welded to the top of the frame; the toothed wheel on the feed motor shaft and the toothed wheel on one end of the drive top wheel shaft transmit power through a toothed belt; the toothed wheel and the shaft are connected by a flat key.

[0008] In a preferred embodiment, the two active top wheel shafts are mounted on the frame for transmitting power and mounting the active wheel; the two active top wheel shafts are connected to the active wheel via a flat key and the displacement of the active wheel is limited by a bushing and a nut; the two active top wheel shafts are located on both sides of the upper part of the frame, and the two shafts are connected to a toothed wheel via a toothed belt to transmit power.

[0009] In a first preferred embodiment, the chain tensioning mechanism includes a tension wheel mounting plate, a screw, a self-locking handwheel, a compression spring, a tension wheel rotating block, a tension wheel clamping plate, a tension wheel, and a swivel chain. The chain tensioning mechanism is mounted on a frame. The tension wheel mounting plate is bolted to the upper sides of the frame. The tension wheel is positioned between the two tension wheel clamping plates via a rotating shaft and a nut. The tension wheel rotating block is positioned between the two tension wheel clamping plates. The lower end of the screw is inserted into and connected to the hole in the tension wheel rotating block. The compression spring is positioned above the tension wheel mounting plate and sleeved on the screw. The compression spring is compressed via the self-locking handwheel to move the screw up and down and control the tension. The chain is a swivel chain with adjustable length.

[0010] In a preferred embodiment, the tensioning mechanism is mounted on a frame; the tensioning mechanism includes a tensioning wheel mounting plate, a screw, a self-locking handwheel, a compression spring, a tensioning wheel rotating block, a tensioning wheel clamping plate, and a tensioning wheel.

[0011] In a preferred embodiment, the tensioning wheel mounting plate is mounted on the frame by two bolts for mounting the tensioning mechanism; the tensioning wheel is mounted between two tensioning wheel clamping plates via a rotating shaft, and displacement is limited by a nut; the tensioning wheel rotating block is used to connect the screw and also ensures that the tensioning wheel can swing within a small range; the tensioning wheel rotating block is mounted on the upper part between the two tensioning wheel clamping plates and displacement is limited by an elastic retaining ring; a threaded hole is opened in the middle of the tensioning wheel rotating block, and the lower end of the screw is inserted into the hole of the tensioning wheel rotating block and connected to it, and fixed by a nut.

[0012] In a preferred embodiment, the compression spring is positioned above the tension wheel mounting plate and sleeved on the screw. The upper end of the spring is compressed by a self-locking handwheel to move the screw up and down and control the tension. When the self-locking handwheel moves downward, the screw moves upward under the action of the spring force to tighten the chain, thereby achieving the tensioning function.

[0013] In a preferred embodiment, the chain is a swivel chain, which allows for free length adjustment.

[0014] In one preferred embodiment, the tensioning mechanism is symmetrically distributed on both sides of the frame; the chain is wound in a regular pattern around the drive wheel, driven wheel, and tensioning wheel.

[0015] In a preferred embodiment, the cutting mechanism includes a tool mounting bracket; the cutting mechanism includes a hollow sliding long shaft and a hollow sliding long shaft support; the cutting mechanism includes a cutting motor and a toothed wheel; the cutting mechanism includes a tool assembly; the cutting mechanism includes a fixed hollow conical shaft, a sliding hollow conical shaft, a sliding sleeve, and a bolt shaft; the cutting mechanism includes a tool adjustment mechanism and a chip removal cover.

[0016] In a preferred embodiment, the tool mounting bracket is housed within the frame for mounting the tool assembly; a hollow sliding long shaft is provided at the bottom of the frame to support the tool mounting bracket.

[0017] In a preferred embodiment, the tool mounting bracket and the hollow sliding long shaft support are sleeved on the hollow sliding long shaft. The tool mounting bracket can move along the hollow sliding long shaft and cooperate with the tool adjustment mechanism to control the chip position.

[0018] In a preferred embodiment, the cutting motor is bolted to the side plate of the tool mounting bracket to provide power to the cutting mechanism; the toothed wheel on the output shaft of the cutting motor and the toothed wheel on the fixed hollow conical shaft are driven by a toothed belt; the two toothed wheels are respectively sleeved on the motor shaft and the fixed hollow conical shaft by flat keys; the toothed wheel on the motor output shaft has its axial displacement restricted by end caps and screws; the toothed wheel on the fixed hollow conical shaft has its axial displacement restricted by a back nut.

[0019] In a preferred embodiment, the tool assembly includes a centrifugal tool, a tool clamp, a tool shim, a tool clamping plate, a tool spindle, a tool baffle, four tool rotating shafts, and four tool limiting shafts.

[0020] In a preferred embodiment, the cutting motor is mounted on the side plate of the tool mounting bracket. One end of the fixed hollow conical shaft has a keyway, and a toothed wheel is fitted over the keyway. The toothed wheel is connected to the fixed hollow conical shaft by a common flat key. A toothed belt is provided on the toothed wheel, and the power transmission between the output shaft of the cutting motor and the fixed conical shaft is realized through the toothed belt.

[0021] In a preferred embodiment, the tool clamps and tool pads are spaced apart and fitted onto the tool spindle, with adjacent tool clamps arranged at a 90° angle. The tool shafts pass through the tool clamps and are fitted into their inner holes at a 90° circumference, with both ends fixed to the inner holes of the tool clamping plates. A tool limiting shaft is fitted into the inner hole of the tool clamping plate. Centrifugal tools are fitted between the two tool clamps on the tool spindle. One end of the centrifugal blade has an inner hole for fitting the tool shaft. One end of the centrifugal blade has an arc-shaped groove that contacts the tool limiting shaft to define the ultimate cutting position. The centrifugal blade's cutting angle is set to angle α, ensuring optimal force distribution when cutting the pipe's anti-corrosion layer, thus extending tool life. The blade's center of mass is set to a specific position, allowing the centrifugal blade to cut and peel off the pipe's anti-corrosion layer by relying on its inertia when the tool spindle rotates at high speed. This effectively avoids excessive cutting force that could damage the pipe surface and the centrifugal tool body, while providing sufficient cutting force to complete the peeling of the pipe's external anti-corrosion layer.

[0022] In one preferred embodiment, the tool assembly is mounted on the tool mounting bracket via the engagement of an internal tool spindle conical hole and a conical shaft. In another preferred embodiment, the fixed hollow conical shaft is fixed to the tool mounting bracket by a back-tightening nut and a shoulder. The fixed hollow conical shaft is fitted with a toothed wheel via a flat key and is driven by a toothed belt to a toothed wheel on the cutting motor. A bolt shaft is inserted into the hollow hole of the fixed hollow conical shaft, and the fixed hollow conical shaft engages with the conical surface of the tool spindle.

[0023] In a preferred embodiment, a sliding sleeve is fitted over the sliding hollow conical shaft, and the sliding sleeve is fixed to the tool mounting bracket by a back-tightening nut. The sliding hollow conical shaft can move within the sliding sleeve. A bolt shaft is inserted into the hole of the hollow conical shaft, and the bolt shaft can be freely disassembled. After disassembly, the sliding hollow conical shaft can be freely disengaged from the conical hole of the tool spindle, and the tool assembly can be freely disengaged from the fixed hollow conical shaft, realizing a quick overall tool change.

[0024] In a preferred embodiment, the chip cover is mounted on the tool mounting bracket by screws; the chip cover covers the front of the tool and can limit the splashing of waste chips.

[0025] In a preferred embodiment, the tool adjustment mechanism is mounted on the machine frame; the tool adjustment mechanism includes a movable slider, a hollow sliding short shaft, a hollow sliding short shaft support, a screw, a compression spring, a cutting assembly rotating block, and a cutting assembly rotating support.

[0026] In a preferred embodiment, the cutting assembly rotating support is welded to the tool assembly mounting bracket to support the cutting assembly rotating block, and the cutting assembly rotating block has a threaded hole in the middle for connecting the tool adjusting screw.

[0027] In a preferred embodiment, the lower end of the tool adjusting screw is inserted into the hole of the rotating block of the cutting assembly and locked by a nut. The compression spring is located above the nut and supports the nut below the moving slider. The tool adjusting mechanism can be adjusted up and down by the screw and locked by the nut.

[0028] In a preferred embodiment, the hollow sliding short shaft is mounted on the frame via a hollow sliding short shaft support and is fixed with a cotter pin.

[0029] In a preferred embodiment, the movable slider is longitudinally sleeved on the upper end of the screw and laterally sleeved on the hollow sliding short shaft; the movable slider can move and rotate along the hollow sliding short shaft and be locked by a nut; the cutting position can be changed by changing the position of the movable slider.

[0030] In one preferred embodiment, the two side plates of the frame are evenly perforated; tensioning mechanism mounting plates are provided on both sides of the frame; and a feed motor mounting plate, a top hollow shaft, and ribs are provided on the upper part of the frame.

[0031] The beneficial effects of the present invention are as follows: compared with the prior art, the present invention has a fast peeling speed, a stable peeling process, quick tool replacement, and lightweight and portable equipment, which can effectively solve the problem of anti-corrosion layer peeling. Attached Figure Description

[0032] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments of the present invention will be briefly described below. Obviously, the drawings described below only relate to some embodiments of the present invention and are not intended to limit the present invention. Wherein:

[0033] Figure 1 An isometric view of a pipe corrosion protection coating stripping machine is shown.

[0034] Figure 2 A top view of a pipe corrosion protection coating stripping machine is shown;

[0035] Figure 3 The right view of a pipe corrosion protection coating stripping machine is shown;

[0036] Figure 4 A bottom view of a pipe corrosion protection coating stripping machine is shown;

[0037] Figure 5 A cross-sectional view of the cutting assembly is shown;

[0038] Figure 6 A cross-sectional view of the tool adjustment mechanism is shown;

[0039] Figure 7 A cross-sectional view of the main cutting mechanism is shown.

[0040] In the diagram: 1. Feed motor; 2. Driven wheel; 3. Driven wheel; 4. Tensioner wheel under its own weight; 5. Cutting motor; 6. Tool mounting bracket; 7. Chip cover; 8. Moving retainer; 9. Gear on the output shaft of the feed motor; 10. Driven top wheel shaft; 11. Gear on one end of the drive top wheel shaft; 12. Gear on the other end of the drive top wheel shaft; 13. Tensioning mechanism clamping plate; 14. Self-locking handwheel; 15. Tensioning mechanism compression spring; 16. Tensioning mechanism threaded rod; 17. Tensioner wheel clamping plate; 18. Chain constraint. 19. Tensioning wheel at the bottom; 20. Hollow shaft at the bottom of the frame; 21. Frame; 22. Toothed gear on the output shaft of the cutting motor; 23. Toothed gear on the tool spindle; 24. Tool spindle; 25. Tool; 26. Bolt shaft; 27. Hollow conical shaft; 28. Nut remover; 29. ​​Tool adjusting screw; 30. Hollow shaft; 31. Upper plate of the frame; 32. Compression spring; 33. Transverse short shaft; 34. Tool mounting bracket fixing shaft; 35. Centrifugal blade; 36. Tool limiting shaft; 37. Tool rotating shaft; 38. Centrifugal tool center of mass position. Detailed Implementation

[0041] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0042] The terminology used in this invention is that which is currently widely used in the art in consideration of the function of the invention; however, these terms may vary according to the intent of those skilled in the art, precedent, or new technology in the art. Furthermore, specific terms may be chosen by the applicant, and in such cases, their detailed meanings will be described in the detailed description of the invention. Therefore, the terms used in this specification should not be construed as simple names, but rather based on their meanings and the overall description of the invention.

[0043] refer to Figure 1 , Figure 2 and Figure 4The feed motor 1 is bolted to the motor mounting bracket, which is bolted to the frame mounting plate. The frame mounting plate is welded to the upper part of the frame 20. The bolt holes on the frame mounting plate are elongated slotted holes, which can adjust the installation position of the feed motor 1. The toothed wheel 9 on the output shaft of the feed motor is sleeved on the output shaft of the feed motor 1 and fixed by the end cover and bolts. The toothed wheel 9 on the output shaft of the feed motor drives the toothed wheel 11 at one end of the drive top wheel shaft to rotate through the toothed belt, thereby driving the drive top wheel shaft 10 to rotate. A toothed wheel 12 is fitted at the other end of the active top wheel shaft, which drives another active top wheel shaft to rotate via a toothed belt. The two top wheel shafts are mounted on the frame via bushings and bearings. Active wheels 2 are fitted at both ends of the top wheel shafts. The active wheels 2 are fixed to one side of the top wheel shaft by bolts and anti-loosening washers (the active wheels 2 on the other side are the same). Four driven wheels 3 are respectively fitted on two independent short shafts and on the hollow shaft 19 at the bottom of the frame. The two short shafts are mounted on the frame. The driven wheels 3 are fixed to one end of the two short shafts and both ends of the hollow shaft 19 at the bottom of the frame by nuts.

[0044] Further reference Figure 3 The tensioning mechanism clamping plate 13 is fixed at the middle position of the upper part of the two side plates of the frame; the tensioning mechanism threaded rod 16 passes through the hole of the tensioning mechanism clamping plate 13, and the self-locking handwheel 14 and the tensioning mechanism compression spring 15 are sleeved on the upper end of the tensioning mechanism threaded rod 16. The lower end of the tensioning mechanism compression spring 15 presses the tensioning mechanism clamping plate 13, and the upper end supports the self-locking handwheel 14; the lower end of the tensioning mechanism threaded rod 16 is connected to the tensioning wheel clamping plate 17, and the tensioning wheel 18 under the constraint of the chain is fixed on the tensioning wheel clamping plate 17 by bolts.

[0045] Further reference Figure 1 , Figure 4 , Figure 5 , Figure 6 and Figure 7The tool mounting bracket 6 is fixed by the hollow shaft 19 at the bottom of the frame and the tool adjustment mechanism at the top of the frame; the cutting motor 5 is fixed to the tool mounting bracket 6 by screws, and the toothed wheel 21 on the output shaft of the cutting motor is sleeved on the output shaft of the cutting motor 5 and fixed by end caps and bolts; the toothed wheel 21 on the output shaft of the cutting motor drives the toothed wheel 22 on the tool spindle to rotate 22 through the toothed belt, and the toothed wheel 22 on the tool spindle drives the hollow conical shaft 26 to rotate. The conical holes at both ends of the tool spindle 23 cooperate with the hollow conical shaft 26, and the bolt shaft 25 ensures that the hollow conical shaft 26 and the tool spindle 23 are pressed tightly. When the tool 24 is damaged, the bolt shaft 25 can be quickly removed to remove the tool disc and replace the tool 24; the tool rotating shaft 36 and the tool limiting shaft 35 are evenly arranged on the tool clamping plate and fixed by bolts; the tool rotating shaft 36 passes through the tool clamping plate and is sleeved on the tool clamping plate at a circumferential 90° angle. The inner hole is fixed at both ends to the inner hole of the tool clamping plate; the tool limiting shaft 35 is sleeved in the inner hole of the tool clamping plate; the centrifugal blades 34 are respectively sleeved between the two tool clamping plates on the tool spindle 23; one end of the centrifugal blade 34 has an inner hole for sleeved on the tool rotating shaft 36; one end of the centrifugal blade 34 has an arc groove, which contacts the tool limiting shaft 35 to limit the extreme cutting position; the cutting angle of the centrifugal blade 34 is set to angle α, so that the tool is in the optimal force state when cutting the anti-corrosion layer of the pipeline, which can extend the service life of the tool; the centrifugal tool centrifugal tool center of mass position 37 is set to a specific position, and when the tool rotating shaft 36 rotates at high speed, the inertial force of the centrifugal blade 34 is used to cut and peel off the anti-corrosion layer of the pipeline, which can effectively avoid excessive cutting force damaging the pipeline surface and the centrifugal blade 34 body, and can provide sufficient cutting force to complete the peeling of the outer anti-corrosion layer of the pipeline.

[0046] Further reference Figure 1 and Figure 6 The chip removal cover 7 is located on the tool mounting bracket 6 and connected by screws, which can effectively solve the problem of chip splashing. The hollow shaft 29 is supported by two ribs on the upper part of the frame 20. The tool adjustment mechanism is sleeved on the hollow shaft 29 through the movable retaining ring 8. The tool adjustment screw 28 passes through the movable retaining ring 8 and is fixed by the upper and lower nuts. The lower end of the tool adjustment screw 28 is connected to the movable retaining ring 8, which is located between the two ribs above the tool mounting bracket 6, which can ensure that the tool adjustment mechanism can move axially along the hollow shaft 29. The lower end of the tool adjustment screw 28 is sleeved with a compression spring 31. The hollow shaft 29 is installed on the upper plate 30 of the frame. The end of the tool adjustment screw 28 is connected to the tool mounting bracket 6 through the transverse short shaft 32, which ensures that the cutting assembly can rotate within a small range along the fixed shaft 33 of the tool mounting bracket.

[0047] Further reference Figure 1 The frame 20 has evenly spaced holes on both sides to reduce the overall weight of the equipment; the frame 20 has tensioning mechanism mounting plates 13 on both sides; the upper part of the frame has a feed motor mounting plate, a top hollow shaft 29 and ribs.

[0048] Finally, it should be noted that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways as long as they do not depart from the scope of the present invention.

Claims

1. A pipe anti-corrosion coating stripping machine, characterized in that, include: A main body that can move circumferentially along the outer diameter of a pipe; the main body includes a traveling mechanism that ensures the circumferential movement of the equipment; the main body includes a cutting mechanism that can peel off the anti-corrosion layer of the pipe; the main body includes a frame that provides support; the main body is made of a rigid material.

2. The pipeline anti-corrosion coating stripping machine as described in claim 1, characterized in that, The traveling mechanism includes a feed motor (1) that provides power for the circumferential movement of the main body and toothed wheels and toothed belts for transmitting power; the traveling mechanism includes two drive top wheel shafts (10) for transmission and four drive wheels (2); the traveling mechanism includes four driven shafts and four driven wheels (3) for traveling; the traveling mechanism includes a pair of toothed wheels and toothed belts between the two drive top wheel shafts (10); the traveling mechanism includes a chain tensioning mechanism for ensuring that the equipment is in close contact with the pipeline.

3. The pipeline anti-corrosion coating stripping machine as described in claim 2, characterized in that, The feed motor (1) is mounted on the mounting plate of the frame (20) by bolts; the toothed wheel (9) on the output shaft of the feed motor is connected to the toothed wheel (11) at one end of the drive top wheel shaft by a toothed belt; the toothed wheel is engaged with the rotating shaft by a flat key.

4. The pipeline anti-corrosion coating peeling machine as described in claim 3, characterized in that, The two active top wheel shafts (10) are mounted on the frame (20); the two active top wheel shafts (10) are connected to four active wheels (2) by a flat key, and the four active wheels (2) are respectively sleeved on the ends of the two active top wheel shafts (10), and the displacement of the active wheels (2) is restricted by the bushing and nut; the toothed wheel (11) at one end of the two active top wheel shafts transmits power through the toothed belt.

5. The pipe anti-corrosion coating peeling machine as described in claim 4, characterized in that, The chain tensioning mechanism includes a tensioning mechanism clamping plate (13), a tensioning mechanism threaded rod (16), a self-locking handwheel (14), a tensioning mechanism compression spring (15), a tensioning wheel rotating block, a tensioning wheel clamping plate (17), a tensioning wheel, and a live-joint chain; the chain tensioning mechanism is mounted on a frame (20); the tensioning mechanism clamping plate (13) is bolted to the upper part of both sides of the frame (20); the tensioning wheel is located between the two tensioning wheel clamping plates (17) via a rotating shaft and a nut; the tensioning wheel... The rotating block is located on the upper part between the two tensioning wheel clamps (17); the lower end of the tensioning mechanism threaded rod (16) is inserted into the hole of the tensioning wheel rotating block and connected to it; the tensioning mechanism compression spring (15) is located above the tensioning mechanism clamp (13) and sleeved on the tensioning mechanism threaded rod (16); the tensioning mechanism compression spring (15) is compressed by the self-locking handwheel (14) to realize the up and down movement of the tensioning mechanism threaded rod (16) and control the tension amount; the chain is a live joint chain and the chain length can be freely adjusted.

6. The pipeline anti-corrosion coating stripping machine as described in claim 5, characterized in that, The cutting mechanism includes a tool mounting bracket (6), a hollow sliding long shaft, and a hollow sliding long shaft support; the cutting mechanism includes a tool adjustment mechanism and a chip removal cover (7); the cutting mechanism includes a tool assembly; the cutting mechanism includes a cutting motor (5) and a toothed wheel; the cutting mechanism includes a fixed hollow conical shaft (26), a sliding sleeve, and a bolt shaft (25).

7. The pipe anti-corrosion coating stripping machine as described in claim 6, characterized in that, The tool mounting bracket (6) is located inside the frame (20) via a hollow sliding long shaft to protect the cutting assembly; the hollow sliding long shaft support is located on the frame to support the hollow sliding long shaft; the tool mounting bracket (6) and the hollow sliding long shaft support are sleeved on the hollow sliding long shaft; the tool mounting bracket (6) can move along the hollow sliding long shaft and control the cutting position of the tool assembly by cooperating with the tool adjustment mechanism.

8. The pipe anti-corrosion coating stripping machine as described in claim 7, characterized in that, The chip discharge cover (7) is bolted to the tool mounting bracket (6) for discharging waste chips.

9. The pipe anti-corrosion coating stripping machine as described in claim 8, characterized in that, The tool adjustment mechanism includes a movable slider, a hollow sliding short shaft, a hollow sliding short shaft support, a tool adjustment screw (28), a compression spring (31), a cutting assembly rotating block, and a cutting assembly rotating support; the tool adjustment mechanism is mounted on the frame (20); the cutting assembly rotating support is welded to the upper end of the tool assembly mounting bracket and connected to the tool adjustment screw (28) through the cutting assembly rotating block; the cutting assembly rotating block is located between the two cutting assembly rotating supports; the lower end of the tool adjustment screw (28) is inserted into the hole of the cutting assembly rotating block and locked with a nut; the... The compression spring (31) is located above the locking nut of the rotating block and supports the nut below the moving slider; the tool adjustment mechanism can be adjusted up and down by the tool adjustment screw (28) and locked by the upper and lower nuts of the moving slider; the two hollow sliding short shaft supports are located on the frame (20); the hollow sliding short shaft is located in the hole of the hollow sliding short shaft support and is fixed by the cotter pin; the moving slider is longitudinally sleeved on the tool adjustment screw (28) and laterally sleeved on the hollow sliding short shaft; the moving slider can move and rotate along the hollow sliding short shaft and is locked by the nut.

10. The pipe anti-corrosion coating stripping machine as described in claim 9, characterized in that, The tool assembly includes a centrifugal blade (34), a tool clamp, a tool shim, a tool clamping plate, a tool spindle (23), a tool baffle, four tool rotating shafts (36), and four tool limiting shafts (35).

11. The pipe anti-corrosion coating stripping machine as described in claim 10, characterized in that, The cutting motor (5) is mounted on the side plate of the tool mounting bracket (6). One end of the fixed hollow conical shaft (26) has a keyway. A toothed wheel is fitted over the keyway. The toothed wheel is connected to the fixed hollow conical shaft (26) by a common flat key. A toothed belt is provided on the toothed wheel. The power transmission between the output shaft of the cutting motor (5) and the fixed hollow conical shaft (26) is realized through the toothed belt.

12. The pipe anti-corrosion coating stripping machine as described in claim 11, characterized in that, The tool assembly is mounted on a hollow conical shaft (26) fixed at both ends; the fixed hollow conical shaft (26) is fixed to the tool mounting bracket (6) by a back tightening nut and a shoulder; a sliding sleeve is fitted over the fixed hollow conical shaft (26), and the sliding sleeve is fixed to the tool mounting bracket (6) by a back tightening nut; the tool assembly is connected to the hollow conical shaft (26) fixed at both ends by a bolt shaft (25) to achieve the fixing of the tool assembly and the transmission of power.

13. The pipe anti-corrosion coating stripping machine as described in claim 12, characterized in that, The bolt shaft (25) can be freely disassembled; the fixed hollow conical shaft (26) is fixedly installed on the tool mounting bracket (6); the fixed hollow conical shaft (26) can move within the sliding sleeve; after the bolt shaft (25) is disassembled, the fixed hollow conical shaft (26) can be freely disengaged from the conical hole of the tool spindle (23), and then the tool assembly can be freely disengaged from the fixed hollow conical shaft (26) to achieve overall quick tool change.

14. The pipe anti-corrosion coating stripping machine as described in claim 13, characterized in that, The tool clamps and tool pads are spaced apart and fitted on the tool spindle (23), with adjacent tool clamps arranged at a 90° angle; the tool shaft (36) passes through the tool clamps and is fitted in the inner hole of the tool clamps at a 90° circumference, and is fixed at both ends to the inner hole of the tool clamping plate; the tool limiting shaft is fitted in the inner hole of the tool clamping plate; the centrifugal blade (34) is fitted between the two tool clamps on the tool spindle (23); one end of the centrifugal blade (34) has an inner hole for fitting the tool shaft (36); the other end of the centrifugal blade has an arc groove that contacts the tool limiting shaft (35) to limit the extreme cutting position.

15. The pipe anti-corrosion coating stripping machine as described in claim 14, characterized in that, The two ends of the tool spindle (23) are located in the tool clamping plate holes; the four tool rotating shafts (36) and the four tool limiting shafts (35) are located in the tool clamping plate holes.

16. The pipe anti-corrosion coating stripping machine as described in claim 15, characterized in that, The frame is made of angle steel welded together.

Images