A steel pipe pole outer wall annular following type polishing device

Abstract

The application discloses a kind of steel pipe pole outer wall annular follow-up type polishing device, it is related to steel pipe pole processing relevant field, including mounting seat, base, polishing part and limiting portion, the mounting seat is fixedly arranged on base, and mounting seat is opened with the through hole for steel pipe pole body to pass through;The limiting portion is adapted to different diameter steel pipe pole body and realizes circumferential limiting, and polishing part carries out annular follow-up type polishing to the outer wall of steel pipe pole body.This steel pipe pole outer wall annular follow-up type polishing device is provided with three groups of equal-angle arrangement cooperation push rod and limiting plate, and the center limiting of different diameter steel pipe pole can be quickly self-adapted, and deviation during polishing is prevented;Hollow rotating gear drives polishing piece to do coaxial annular rotation, realizes the uniform follow-up polishing of whole domain of outer wall, and the problem of unstable artificial polishing pressure and poor surface consistency is solved from the root;Transmission mechanism drives accommodating cylinder to reciprocate, cooperates with piston pump type liquid spraying structure, and synchronously accurately sprays degreasing agent during polishing, removes oil dirt in time.

Description

Technical Field

[0001] This invention relates to the technical field of steel pipe pole processing, specifically to a ring-shaped follow-up grinding device for the outer wall of a steel pipe pole. Background Technology

[0002] Steel pipe poles are widely used in power line construction, municipal engineering, and other fields. The outer wall of these poles needs to be free of oxide scale, weld burrs, and rust to ensure coating and performance. Currently, the industry mostly uses manual hand-held grinding tools, which is labor-intensive, inefficient, and results in uneven grinding pressure and poor surface quality. Therefore, grinding equipment is needed. However, grinding the outer wall of steel pipe poles requires rotation to achieve uniform grinding, and current grinding equipment cannot rotate and grind steel pipes of different diameters. Furthermore, the outer wall of stainless steel pipe poles requires processing to accommodate different pipe diameters during grinding.

[0003] To solve the above problems, a high-efficiency outer wall grinding device for thick-walled stainless steel seamless pipes can be disclosed in the prior art (Chinese patent application number CN202022031190.7, application date September 16, 2020). This device consists of a moving block, a moving frame, and an extension rod mounted on the grinding device frame, with fixed holes. The moving block can move on the grinding device frame and is fixed by the fixed holes and bolts. The extension rod can slide on the moving frame. By changing the distance between the rolling cylinders, steel pipes of different diameters can be driven. The device rotates, making it highly adaptable. It can also be compared to a prior art (Chinese patent application number CN202221105246.1, application date 20220509) that discloses a spiral steel pipe outer wall grinding device. This device has baffles on the inner side of the conveying base to guide the spiral steel pipe during conveying, preventing it from deviating and improving the stability of the grinding quality. The distance between the baffles can be adjusted by a screw. A crossbar is connected to the side plate via a hydraulic cylinder, allowing the height of the grinding mechanism to be adjusted to accommodate pipes of different sizes.

[0004] Although it can adapt to grinding steel pipes of different diameters, there are still some shortcomings in the process. After the steel pipes are produced, there is oil on their surface, which requires the use of degreasing agent to remove the oil. However, the existing equipment only uses a single spraying device for degreasing during grinding, but the long stay results in a long degreasing process, which is not conducive to the subsequent grinding process.

[0005] Therefore, we propose a ring-shaped following grinding device for the outer wall of steel pipe poles to solve the problems mentioned above. Summary of the Invention

[0006] The purpose of this invention is to provide a ring-shaped follow-up grinding device for the outer wall of steel pipe poles, so as to solve the problems currently on the market mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a ring-shaped following grinding device for the outer wall of a steel pipe pole, comprising a mounting base, a base, a grinding part, and a limiting part. The mounting base is fixedly disposed on the base and has a through hole for the steel pipe pole body to pass through. The grinding part and the limiting part are respectively disposed on the mounting base. The grinding part acts on the steel pipe pole body, and the driving source of the grinding part is a drive motor. The drive motor is connected to a receiving cylinder through a transmission mechanism. The receiving cylinder is rotatably disposed outside the rotating shaft at the top of the mounting base. The receiving cylinder is connected to a functional component for simultaneously performing degreasing and axial conveying of the steel pipe pole body. The limiting part is adapted to steel pipe pole bodies of different diameters and achieves circumferential limiting. The grinding part performs ring-shaped following grinding on the outer wall of the steel pipe pole body.

[0008] Preferably, the grinding part includes a drive motor, a reduction gear, a rotating gear, and a grinding component; the output end of the drive motor is fixedly connected to the reduction gear, the outer side of the reduction gear is meshed with a hollow rotating gear, the rotating gear is rotatably disposed inside the mounting base and its center is collinear with the center of the through hole of the mounting base, the right end of the rotating gear is fixedly connected to the grinding component, the grinding component is composed of a grinding block and a threaded rod, and the threaded rod is threadedly connected to the right side of the rotating gear.

[0009] Preferably, the limiting part includes three sets of matching push rods arranged at equal angles around the center of the through hole of the mounting base. The output end of the matching push rod is fixedly connected to the limiting plate. A roller is rotatably arranged on the inner side of the limiting plate, and the outer side of the roller is attached to the circumferential outer wall of the steel pipe rod body.

[0010] Preferably, the transmission mechanism includes a reciprocating lead screw rotatably disposed at the center of the reduction gear, a connecting sleeve threadedly connected to the outer side of the reciprocating lead screw, an outer end of a telescopic rod rotatably connected to the outer side of the connecting sleeve, and an end of the telescopic rod away from the connecting sleeve fixedly connected to the outer wall of the receiving cylinder.

[0011] Preferably, the side wall of the container is connected to an inlet pipe with a central flexible hose, a one-way inlet valve is embedded inside the inlet pipe, and a storage tank is connected to the outside of the inlet pipe, which is filled with degreasing agent.

[0012] Preferably, the functional components include an extension rod, a strong spring, a piston disc, and a roller; the extension rod is slidably disposed below the receiving cylinder, and a roller is rotatably disposed at the bottom end of the extension rod in one direction; a plurality of negative pressure adsorption discs are formed at equal angles around the outer side of the roller around its own center; the piston disc is fixed at one end of the extension rod that extends into the receiving cylinder, the outer wall of the piston disc is in contact with the inner wall of the receiving cylinder, and the top of the piston disc is connected to the inner wall of the receiving cylinder through a strong spring.

[0013] Preferably, the upper end of the extension rod is provided with a liquid inlet, the bottom of the extension rod is provided with a first liquid spraying port in a ring shape facing outwards, and the center of the bottom end of the extension rod is provided with a second liquid spraying port vertically, with the bottom of the second liquid spraying port facing the upper end of the negative pressure adsorption plate directly above.

[0014] Preferably, a one-way valve is provided inside the liquid inlet. The one-way valve is closed when the container is filled with liquid and the one-way inlet valve is open. The one-way valve is open when the container is discharging liquid and the one-way inlet valve is closed, so that the second spray port and the first spray port can spray liquid internally when the piston disc is pressed down and the container is filled with liquid when the piston disc is reset and moved upward.

[0015] Preferably, a drive shaft is fixed to the bottom of the extension rod, the drive shaft is fixedly connected to the ratchet, the ratchet is fitted with a pawl on the outside, and the pawl is elastically rotatable inside the roller.

[0016] Preferably, the liquid inlet is always located inside the receiving cylinder, and the first and second liquid spray nozzles are always located outside the bottom of the receiving cylinder, and a sealing ring is provided at the sliding part of the receiving cylinder and the extension rod.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: The annular following grinding device for the outer wall of the steel pipe rod has three sets of equally angled push rods and limiting plates that can quickly adapt to the centering limit of steel pipe rods of different diameters, eliminating grinding deviation; the hollow rotating gear drives the grinding part to rotate in a coaxial ring, realizing uniform following grinding of the entire outer wall, solving the problems of unstable pressure and poor surface consistency of manual grinding from the root; the transmission mechanism drives the receiving cylinder to swing back and forth, and with the piston pump-type liquid spraying structure, degreasing agent is sprayed synchronously and accurately throughout the grinding process, removing oil stains in time and avoiding the degreasing agent from staying for a long time and affecting subsequent processes; the ratchet and pawl one-way conveying mechanism, together with rollers, realizes automatic axial feeding of the steel pipe rod, integrating the three processes of degreasing, grinding and conveying into one, eliminating the need for manual transfer, greatly reducing labor intensity and improving processing efficiency. The specific details are as follows: 1. By flexibly fitting the inner rollers to the outer wall of the steel pipe pole, stable centering and limiting of poles of different diameters can be quickly achieved, effectively preventing the poles from shaking or shifting during grinding; the rotating gear and the through hole of the mounting seat are aligned with the center, driving the grinding part to rotate in a uniform circular motion, realizing circular following grinding of the outer wall of the steel pipe pole, and the steel pipe pole body is moved to the right by the unidirectional rotating rollers.

[0018] 2. Relying on the reciprocating screw and telescopic rod to drive the receiving cylinder to swing back and forth, in conjunction with the piston disc and two-way one-way valve structure, the degreasing agent is precisely sprayed and automatically stored simultaneously during grinding. The degreasing agent acts directly on the outer wall of the rod and the roller adsorption area, removing oil stains immediately and avoiding the long waiting time of the independent degreasing process, thus greatly reducing the pretreatment time; the ratchet and pawl one-way transmission structure drives the roller to realize the axial automatic conveying of the steel pipe rod; Furthermore, the first spray nozzle degreases the oil stains on the outer surface of the workpiece, and the second spray nozzle can degrease the shielded position of the steel pipe rod at the roller contact position. In addition, the contact position of the negative pressure adsorption plate is moist, and the multiple sets of negative pressure adsorption plates are more stable when handling the workpiece. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is a side view of the structure of the present invention; Figure 3 This is a schematic diagram of the main structure of the mounting base of the present invention; Figure 4 This is a schematic diagram of the main structure of the reduction gear of the present invention; Figure 5 This is a schematic diagram of the cross-sectional structure of the receiving cylinder of the present invention; Figure 6 For the present invention Figure 5 Enlarged structural diagram at point A in the middle; Figure 7 This is a schematic diagram of the main structure of the extension rod of the present invention; Figure 8 This is a schematic diagram of the main cross-sectional structure of the extension rod of the present invention; Figure 9 This is a schematic diagram of the main structure of the roller of the present invention; Figure 10 This is a schematic diagram of the swinging state of the container cylinder of the present invention.

[0020] In the diagram: 1. Mounting base; 2. Base; 3. Drive motor; 4. Reduction gear; 5. Rotating gear; 6. Grinding component; 7. Matching push rod; 8. Limiting plate; 9. Steel pipe rod body; 10. Reciprocating screw; 11. Connecting sleeve; 12. Telescopic rod; 13. Receiving cylinder; 14. Rotating shaft; 15. Extension rod; 151. Liquid inlet; 152. First spray nozzle; 153. Second spray nozzle; 16. Strong spring; 17. Piston disc; 18. Liquid inlet pipe; 181. One-way liquid inlet valve; 19. Roller; 191. Negative pressure adsorption plate; 20. Drive shaft; 21. Ratchet; 22. Pawl. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figures 1-10The present invention provides the following technical solution: a ring-shaped follow-up grinding device for the outer wall of a steel pipe pole.

[0023] Example 1: To address the issue of oil stains on the surface of steel pipe poles after production, a degreasing agent is needed for degreasing. Existing equipment uses only a single spraying device for degreasing during grinding, but the prolonged contact time results in a lengthy degreasing process, which is detrimental to subsequent grinding. (See attached...) Figure 1 -Appendix Figure 7The grinding device includes a mounting base 1, a base 2, a grinding section, and a limiting section. The mounting base 1 is fixedly mounted on the base 2 and has a through hole for the steel pipe rod body 9 to pass through. The grinding section and the limiting section are respectively mounted on the mounting base 1. The grinding section acts on the steel pipe rod body 9, and the driving source of the grinding section is a drive motor 3. The drive motor 3 is connected to a receiving cylinder 13 through a transmission mechanism. The receiving cylinder 13 is rotatably mounted on the outside of the rotating shaft 14 at the top of the mounting base 1. The receiving cylinder 13 is connected to a functional component for simultaneously performing degreasing and axial conveying on the steel pipe rod body 9. The limiting section adapts to steel pipe rod bodies 9 of different diameters and achieves circumferential limiting. The grinding section performs annular following grinding on the outer wall of the steel pipe rod body 9. The grinding section includes a drive motor 3, a reduction gear 4, a rotating gear 5, and a grinding component 6. The drive motor 3 outputs... The output end is fixedly connected to a reduction gear 4, and the outer side of the reduction gear 4 is meshed with a hollow rotating gear 5. The rotating gear 5 is rotatably set inside the mounting base 1 and its center is collinear with the center of the through hole of the mounting base 1. The right end of the rotating gear 5 is fixedly connected to a grinding component 6, which is composed of a grinding block and a threaded rod. The threaded rod is threadedly connected to the right side of the rotating gear 5. The transmission mechanism includes a reciprocating screw 10 rotatably set at the center of the reduction gear 5. The outer side of the reciprocating screw 10 is threadedly connected to a connecting sleeve 11. The outer side of the connecting sleeve 11 is rotatably connected to the outer end of a telescopic rod 12. The end of the telescopic rod 12 away from the connecting sleeve 11 is fixedly connected to the outer wall of the receiving cylinder 13. The side wall of the receiving cylinder 13 is connected to an inlet pipe 18 with a flexible hose in the middle. A one-way inlet valve 181 is embedded inside the inlet pipe 18. The inlet pipe 18 is connected to a storage tank, which is filled with degreasing agent. An inlet 151 is provided at the upper end of the extension rod 15, a first spray nozzle 152 is provided at the bottom of the extension rod 15 in a ring shape, and a second spray nozzle 153 is provided vertically at the center of the bottom end of the extension rod 15, with the bottom of the second spray nozzle 153 facing the upper end of the negative pressure adsorption plate 191 directly above. A one-way valve is provided inside the inlet 151. The one-way valve is closed when the receiving cylinder 13 is filled with liquid, and the one-way inlet valve 181 is open. When the receiving cylinder 13 is discharging liquid, the one-way valve is open, and the one-way inlet valve 181 is closed, so that liquid can be sprayed inside the second spray nozzle 153 and the first spray nozzle 152 when the piston disc 17 is pressed down, and the telescopic rod 12 is filled with liquid when the piston disc 17 is reset and moved upward. The inlet 151 is always located inside the receiving cylinder 13, and the first spray nozzle 152 and the second spray nozzle 153 are always located outside the bottom of the receiving cylinder 13. A sealing ring is provided at the sliding part of the receiving cylinder 13 and the extension rod 15.

[0024] First, the steel pipe rod body 9 to be processed is inserted into the through hole of the mounting base 1 and the center hole of the hollow rotating gear 5. The external control system drives three sets of matching push rods 7, arranged at equal angles around the center of the through hole, to move synchronously. The output end of the matching push rods 7 drives the limiting plate 8 to move towards the center. The rollers on the inner side of the limiting plate 8 flexibly conform to the circumferential outer wall of the steel pipe rod body 9, quickly completing the automatic centering and circumferential limiting of steel pipe rod bodies 9 of different diameters, preventing the rod from shaking or shifting during grinding and ensuring a stable grinding trajectory. Then, the drive motor 3 is started, and its output end drives the reduction gear 4 to rotate. The reduction gear 4 and the hollow rotating gear 5... The meshing transmission drives the rotating gear 5 to rotate coaxially around the center of the through hole inside the mounting base 1; the right side of the rotating gear 5 is connected to the grinding part 6 through a threaded rod, and the grinding part 6 rotates continuously in a 360° ring with the rotating gear 5, performing ring-following grinding on the outer wall of the steel pipe rod body 9 to remove oxide scale, weld burrs and rust layer; the extension length of the grinding part 6 can be adjusted by the threaded rod to adapt to the grinding needs of different pipe diameters; the reduction gear 4 synchronously drives the reciprocating screw 10 to rotate, and the reciprocating screw 10 drives the outer connecting sleeve 11 to move axially back and forth, and the connecting sleeve 11 drives the receiving cylinder 13 to rotate around the shaft 14 through the telescopic rod 12. The fulcrum swings back and forth on the top of the mounting base 1 to achieve synchronous power transmission, providing drive for degreasing spraying and axial conveying; the side wall of the receiving cylinder 13 is connected to a liquid storage tank through the liquid inlet pipe 18, and the liquid storage tank is filled with degreasing agent. The one-way liquid inlet valve 181 inside the liquid inlet pipe 18 only allows the degreasing agent to enter the receiving cylinder 13 in one direction; when the receiving cylinder 13 swings downward, the roller 19 at the bottom end of the extension rod 15 is pressed, driving the extension rod 15 to slide upward, pushing the piston disc 17 to press up inside the receiving cylinder 13, forming a negative pressure inside the receiving cylinder 13, opening the one-way liquid inlet valve 181, and automatically replenishing the degreasing agent to complete the liquid storage; when the receiving cylinder When the piston 17 swings back upwards, the strong spring 16 pushes the piston disc 17 to reset and move downwards, squeezing the degreasing agent in the cylinder. The degreasing agent enters the internal flow channel through the liquid inlet 151 at the upper end of the extension rod 15, and is sprayed out from the first spray nozzle 152 and the second spray nozzle 153 respectively. The first spray nozzle 152 sprays outwards in a ring, degreasing a large area of ​​the outer wall of the steel pipe rod body 9. The second spray nozzle 153 sprays vertically downwards, aiming at the negative pressure adsorption plate 191 on the roller 19, and degreasing the blind area where the roller 19 is in contact with the pipe wall. The liquid inlet 151 has a built-in reverse one-way valve to ensure that the spraying and the storage do not interfere with each other, realizing synchronous online degreasing throughout the grinding process.

[0025] Example 2: To handle the steel pipe rod, the limiting part includes three sets of mating push rods 7 arranged at equal angles around the center of the through hole of the mounting base 1. The output end of the mating push rod 7 is fixedly connected to the limiting plate 8. A roller is rotatably arranged on the inner side of the limiting plate 8, and the outer side of the roller is in contact with the circumferential outer wall of the steel pipe rod body 9. The functional components include an extension rod 15, a strong spring 16, a piston disc 17, and a roller 19. The extension rod 15 is slidably arranged below the receiving cylinder 13, and the bottom end of the extension rod 15 is unidirectionally rotatably equipped with a roller. 19. Several negative pressure adsorption plates 191 are formed at equal angles around the center of the roller 19 on its outer side; one end of the extension rod 15 that extends into the receiving cylinder 13 is fixed with a piston plate 17, the outer wall of the piston plate 17 is attached to the inner wall of the receiving cylinder 13, and the top of the piston plate 17 is connected to the inner wall of the receiving cylinder 13 by a strong spring 16; a drive shaft 20 is fixed at the bottom of the extension rod 15, the drive shaft 20 is fixedly connected to the ratchet 21, the outer side of the ratchet 21 is attached to the pawl 22, and the pawl 22 is elastically rotatably disposed inside the roller 19.

[0026] The bottom of the extension rod 15 is fixed with a ratchet 21 via a drive shaft 20. The roller 19 has a pawl 22 that rotates elastically inside, which works with the ratchet 21 to achieve unidirectional transmission. When the receiving cylinder 13 swings to the left, the pawl 22 slides over the ratchet 21, and the roller 19 spins without moving the steel pipe rod body 9. When the receiving cylinder 13 swings back to the right, the pawl 22 engages with the ratchet 21, and the roller 19 rotates unidirectionally. Combined with the adsorption force and friction of the negative pressure adsorption plate 191, it drives the steel pipe rod body 9 to move in a step-by-step manner along the axial direction. The degreasing agent sprayed from the second spray nozzle 153 wets the surface of the negative pressure adsorption plate 191, improves the adsorption stability, and ensures smooth delivery.

[0027] Example 3: This example differs from Example 2 in that the tension between the roller 19 and the steel pipe pole body 9 is further increased to facilitate the handling of the steel pipe pole body 9 by the negative pressure adsorption plate 191. (See attached diagram.) Figure 7 -Appendix Figure 10 When the transmission mechanism moves the receiving cylinder 13 left and right, after the receiving cylinder 13 moves to the left, three sets of receiving cylinders 13 can move, thereby causing the piston disc 17 inside the receiving cylinder 13 to move downward, which will cause the degreasing agent to be directly sprayed onto the outer side of the negative pressure adsorption plate 191 through the second spray nozzle 153. Due to the unidirectional rotating roller 19, when the receiving cylinder 13 moves to the left, the roller 19 rolls and can clean the oil stains through the second spray nozzle 153. Therefore, since the liquid remains on the surface of the negative pressure adsorption plate 191, the tension between the negative pressure adsorption plate 191 and the steel pipe rod body 9 can also be increased. When the receiving cylinder 13 rotates to the right, the tension between the wet negative pressure adsorption plate 191 and the steel pipe rod body 9 and the elastic force of the strong spring 16 make the handling more stable and convenient. Moreover, through the setting of the second spray nozzle 153, the hidden contact surface of the steel pipe rod body 9 in the lateral position of the negative pressure adsorption plate 191 can be degreased.

[0028] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A ring-shaped grinding device for the outer wall of a steel pipe pole, comprising a mounting base (1), a base (2), a grinding part, and a limiting part, wherein the mounting base (1) is fixedly disposed on the base (2), the mounting base (1) has a through hole for the steel pipe pole body (9) to pass through, the grinding part and the limiting part are respectively disposed on the mounting base (1), the grinding part acts on the steel pipe pole body (9), and the driving source of the grinding part is a drive motor (3); characterized in that: The drive motor (3) is connected to the receiving cylinder (13) through the transmission mechanism. The receiving cylinder (13) is rotatably set outside the rotating shaft (14) at the top of the mounting base (1). The receiving cylinder (13) is connected to a functional component for simultaneously performing degreasing and axial conveying of the steel pipe rod body (9). The limiting part is adapted to steel pipe rod bodies (9) of different diameters and realizes circumferential limiting. The grinding part performs annular following grinding on the outer wall of the steel pipe rod body (9). The grinding section includes a reduction gear (4) fixedly connected to the output end of a drive motor (3), a hollow rotating gear (5) meshing with the outer side of the reduction gear (4), and a grinding component (6) fixedly connected to the right end of the rotating gear (5). The transmission mechanism includes a reciprocating screw (10) rotatably set at the center of the reduction gear (4), a connecting sleeve (11) threadedly connected to the outside of the reciprocating screw (10), an outer end of a telescopic rod (12) rotatably connected to the outside of the connecting sleeve (11), and a fixed connection between the end of the telescopic rod (12) away from the connecting sleeve (11) and the outer wall of the receiving cylinder (13) to realize the reciprocating swing of the receiving cylinder (13). The functional components include an extension rod (15), a strong spring (16), a piston disc (17), and a roller (19); the extension rod (15) is slidably disposed below the receiving cylinder (13), and the piston disc (17) is fixed at one end of the extension rod (15) that extends into the receiving cylinder (13), and the roller (19) is unidirectionally rotatable at the bottom end of the extension rod (15).

2. The annular following grinding device for the outer wall of a steel pipe pole according to claim 1, characterized in that: The rotating gear (5) is rotatably disposed inside the mounting base (1) and its center is collinear with the center of the through hole of the mounting base (1). The grinding part (6) is composed of a grinding block and a threaded rod, and the threaded rod is threadedly connected to the right side of the rotating gear (5).

3. The annular following grinding device for the outer wall of a steel pipe pole according to claim 1, characterized in that: The limiting part includes three sets of matching push rods (7) arranged at equal angles around the center of the through hole of the mounting base (1). The output end of the matching push rod (7) is fixedly connected to the limiting plate (8). A roller is rotatably arranged on the inner side of the limiting plate (8), and the outer side of the roller is attached to the circumferential outer wall of the steel pipe rod body (9).

4. The annular following grinding device for the outer wall of a steel pipe pole according to claim 1, characterized in that: The side wall of the container (13) is connected to an inlet pipe (18) with a central flexible hose. A one-way inlet valve (181) is embedded inside the inlet pipe (18). The inlet pipe (18) is connected to a storage tank, which is filled with degreasing agent.

5. The annular following grinding device for the outer wall of a steel pipe pole according to claim 1, characterized in that: The roller (19) has several negative pressure adsorption disks (191) at equal angles around its own center on the outer side; the outer wall of the piston disk (17) is attached to the inner wall of the receiving cylinder (13), and the top of the piston disk (17) is connected to the inner wall of the receiving cylinder (13) by a strong spring (16).

6. The annular following grinding device for the outer wall of a steel pipe pole according to claim 5, characterized in that: The extension rod (15) has an inlet (151) at the upper end, a first spray nozzle (152) is provided at the bottom of the extension rod (15) in a ring shape, and a second spray nozzle (153) is provided vertically at the center of the bottom end of the extension rod (15). The bottom of the second spray nozzle (153) faces the upper end of the negative pressure adsorption plate (191) directly above.

7. The annular following grinding device for the outer wall of a steel pipe pole according to claim 6, characterized in that: The inlet (151) is equipped with a one-way valve. When the container (13) is filled with liquid, the one-way valve (181) is open. When the container (13) is discharged from liquid, the one-way valve (181) is closed. This enables the second spray port (153) and the first spray port (152) to spray liquid internally when the piston disc (17) is pressed down. When the piston disc (17) is reset and moved upward, the telescopic rod (12) is filled with liquid.

8. The annular following grinding device for the outer wall of a steel pipe pole according to claim 5, characterized in that: The extension rod (15) has a drive shaft (20) fixed at the bottom. The drive shaft (20) is fixedly connected to the ratchet (21). The ratchet (21) is attached to the pawl (22) on the outside. The pawl (22) is elastically rotated inside the roller (19).

9. The annular following grinding device for the outer wall of a steel pipe pole according to claim 6, characterized in that: The inlet (151) is always located inside the container (13), and the first spray nozzle (152) and the second spray nozzle (153) are always located outside the bottom of the container (13). A sealing ring is provided at the sliding part of the container (13) and the extension rod (15).

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