Oil pipe inner wall grinding device and method for oil pipe machining

Abstract

The invention discloses an oil pipe inner wall grinding device and method for oil pipe machining, and relates to the technical field of oil pipe machining. According to the oil pipe inner wall grinding device and method for oil pipe machining, through cooperation of the linear module, the grinding rod mechanism, the slag removal frame mechanism, the first servo motor and the telescopic hose, the first servo motor serves as a core power source, an output shaft of the first servo motor directly drives the grinding rod mechanism to rotate, grinding power for oil pipe inner wall grinding is formed, and meanwhile, the grinding efficiency is improved. When the grinding rod mechanism rotates, the grinding rod mechanism drives the deslagging frame mechanism to rotate synchronously through the friction transmission effect of the grinding rod mechanism and the deslagging frame mechanism, then power needed by deslagging is generated, an independent power source does not need to be additionally arranged for the deslagging function, the device structure is simplified, it can be guaranteed that the grinding action and the deslagging action are completely synchronous from the transmission logic, and the grinding efficiency is improved. The problem that waste residues are difficult to discharge due to the fact that the oil pipe is long is effectively solved, and continuity and cleanliness of grinding of the inner wall of the long oil pipe are guaranteed.

Description

Technical Field

[0001] This invention relates to the field of oil pipe processing technology, specifically to an oil pipe inner wall grinding device and method for oil pipe processing. Background Technology

[0002] In the field of intelligent manufacturing equipment for oil and natural gas, oil pipes are core components for fluid transportation and power transmission. The quality of their inner wall processing directly determines the safety, stability, and service life of the system. Currently, the inner wall of oil pipes must meet strict requirements for surface roughness, roundness tolerance, and cleanliness to avoid problems such as increased fluid resistance, pipeline blockage, seal failure, or component wear caused by impurities. Among these, the grinding process is a key step in oil pipe production to ensure a uniform and smooth inner wall thickness. Precision machining is achieved by removing and grinding excess material from the inner wall of the oil pipe using machine tools. With the continuous improvement of industry requirements for oil pipe performance, there is an urgent need to develop an oil pipe inner wall grinding device and method to meet practical application needs.

[0003] Referring to the patent application with publication number CN117300762A, an oil pipe inner wall grinding device is disclosed. By setting up an upper magnetic block and a lower magnetic block, the pressure can be adjusted by the cooperation between the upper and lower magnetic blocks to ensure that the pressure is changed when the inner wall is of different thicknesses, so as to effectively improve the grinding effect. At the same time, the heat insulation plate isolates the heat and prevents the magnetic blocks from being demagnetized at high temperature, which would affect the normal operation of the device.

[0004] A comprehensive analysis of the above-mentioned patents reveals the following shortcomings:

[0005] Existing oil pipe inner wall grinding devices and methods for oil pipe processing have limitations when grinding the inner walls of long oil pipes. Due to the narrow and long internal space of the oil pipe, the grinding waste generated is difficult to remove in a timely and effective manner and tends to accumulate in the grinding area, affecting the processing effect. Furthermore, the grinding mode switching is not convenient enough, which affects the processing efficiency. Therefore, it is necessary to provide an oil pipe inner wall grinding device and method for oil pipe processing to solve the above-mentioned technical problems. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides an oil pipe inner wall grinding device and method for oil pipe processing. It solves the problems that when grinding the inner wall of a long oil pipe, the waste residue generated during grinding is difficult to remove in a timely and effective manner due to the narrow and long internal space of the oil pipe, and it is easy to accumulate in the grinding area, affecting the processing effect. Furthermore, the grinding mode switching is not convenient enough, which affects the processing efficiency.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an oil pipe inner wall grinding device for oil pipe processing, comprising:

[0008] The machine platform has a linear module fixedly mounted on its top right side. A support base is mounted on the upper part of the linear module. A side plate is fixedly mounted on the top left side of the support base. A first servo motor is fixedly mounted on the lower right side of the side plate. A telescopic hose is fixedly mounted on the upper right side of the side plate. A first roller is rotatably mounted on the rear left side of the machine platform via two supports. A second roller is rotatably mounted on the front left side of the machine platform via two supports. A transmission mechanism is mounted on the left side of the left support. A second servo motor for driving the second roller is fixedly mounted on the front right side of the transmission mechanism. A support frame is fixedly mounted on the top of the machine platform and behind the first roller. Electric telescopic rods are fixedly mounted on both the left and right sides of the top of the support frame. The bottom of the electric telescopic rods slides through the bottom of the support frame and is fixedly mounted with a U-shaped frame. Rubber pressure rollers are rotatably mounted between the left and right side walls of the inner cavity of each U-shaped frame. Two vertical plates are fixedly mounted on the top of the machine platform and to the right of the first and second rollers. Four support rollers are rotatably mounted between the two vertical plates.

[0009] A grinding rod mechanism is used to perform grinding operations on the inner wall of a long oil pipe to be processed. The grinding rod mechanism is located on the lower left side of the side plate.

[0010] The slag removal frame mechanism is used to push the waste slag generated during grinding to the left in a timely manner. The slag removal frame mechanism is located on the upper left side of the side plate.

[0011] Preferably, the grinding rod mechanism includes a long rod, the right end of which rotatably passes through the right wall of the side plate and is fixedly connected to the output shaft of the first servo motor. An active friction wheel is fixedly sleeved on the left outer wall of the long rod. The long rod is located between the two lower support rollers. A hollow cavity is opened at the left end of the long rod, located to the left of the active friction wheel. An electric telescopic rod is fixedly installed in the hollow cavity. A grinding head assembly is provided at the left end of the long rod.

[0012] Preferably, the grinding head assembly includes a connecting rod, a cylinder is fixedly disposed on the left side of the connecting rod, the right side of the connecting rod is connected to the left side of the long rod by several bolts, three grinding block assemblies slide through the upper and lower walls of the cylinder from right to left, and a push-pull rod slides through the middle of the right side of the cylinder.

[0013] Preferably, a rhomboid block is fixedly provided at the left end of the push-pull rod inside the cylinder, and an inner sliding plate is fixedly provided at the right end of the push-pull rod. The inner sliding plate is slidably disposed between the inner walls of the connecting rod, and a first spring is sleeved on the outside of the push-pull rod. The first spring is located between the left side of the inner sliding plate and the cylinder.

[0014] Preferably, each of the grinding block assemblies includes a slide rod that slides through the outer wall of the cylinder. One end of the slide rod is fixedly provided with a trapezoidal block located inside the cylinder, which is adapted to a rhomboid block. A second spring is sleeved on the outside of the slide rod, located between the trapezoidal block and the inner wall of the cylinder. The other end of the slide rod is provided with an abrasive tool by two bolts. The abrasive tool is located outside the cylinder. The cutting abrasive grains distributed on the surface of the abrasive tool in each of the grinding block assemblies are different from right to left.

[0015] Preferably, the slag removal frame mechanism includes a crossbar, the right end of which is fixedly mounted on the upper left side of the side plate. The crossbar is located between two upper support rollers. The interior of the crossbar is connected to the interior of the telescopic hose. A connecting box is fixedly mounted on the left end of the crossbar. A connecting pipe is fixedly mounted on the left side of the connecting box. A filter screen is fixedly mounted on the left side of the connecting pipe. A functional rod assembly is rotatably mounted between the interior of the connecting box, the connecting pipe, and the filter screen.

[0016] Preferably, a bent pipe is fixedly provided at the rear of the crossbar, the connecting box, and the connecting tube. The right end of the bent pipe is fixedly connected to the left rear end of the crossbar. Several branch pipes are evenly fixedly connected to the left rear wall of the bent pipe. An inclined pipe is fixedly connected to the right front wall of the bent pipe. The inclined pipe passes through the rear wall of the connecting box.

[0017] Preferably, the functional rod assembly includes an inner rod that passes through the interior of the connecting box, the connecting tube, and the filter screen cover. The right end of the inner rod is rotatably connected to the right wall of the inner cavity of the connecting box, and the left end of the inner rod rotatably passes through the left wall of the filter screen cover. A driven friction wheel is fixedly sleeved on the right outer wall of the inner rod, and the driven friction wheel is located inside the connecting box. A fan located inside the filter screen cover is fixedly sleeved on the middle part of the inner rod, and a scraper rod located outside the filter screen cover is fixedly installed on the side wall of the inner rod.

[0018] Preferably, the scraper bar contacts the outer wall of the filter screen, and a spiral cleaning frame is fixedly installed on the left outer wall of the inner rod by several support rods. The spiral cleaning frame is located on the left side of the filter screen. The long rod rotates through the lower part of the connecting box, the active friction wheel is located inside the connecting box, and the bottom of the driven friction wheel contacts the top of the active friction wheel.

[0019] The present invention also provides a method for grinding the inner wall of an oil pipe for oil pipe processing, which uses an oil pipe inner wall grinding device and includes the following steps:

[0020] Step 1: Place the long oil pipe to be processed between the tops of the first and second rollers. Activate the electric telescopic rod to push the rubber pressure rollers downwards, ensuring the bottoms of both rollers contact the top of the long oil pipe. With the cooperation of the first and second rollers and the two rubber pressure rollers, the long oil pipe is positioned. Next, activate the second servo motor. With the assistance of the transmission mechanism, the second roller rotates, using friction to rotate the long oil pipe. Then, the linear module moves the support seat to the left, causing the grinding rod mechanism and the slag removal frame mechanism to move to the left as well. Activate the first servo motor to drive the grinding rod mechanism to rotate. The grinding rod mechanism moves to the left while rotating, removing impurities from the long oil pipe. Excess material on the wall is ground off. While the grinding rod mechanism rotates, the friction force drives the slag removal frame mechanism to rotate as well, causing the slag removal frame mechanism to work and generate a suction force to the left, which promptly sucks the waste slag generated during grinding to the left. At the same time, the rotating slag removal frame mechanism further sweeps and pushes the waste slag to the left. During the process, since the right end of the telescopic hose is connected to the external water tank and water pump, the external water pump draws water from the water tank into the telescopic hose and then into the slag removal frame mechanism, which promptly cools the left end of the grinding rod mechanism and the contact area between the grinding rod mechanism and the slag removal frame mechanism until the grinding rod mechanism completes the grinding of excess material on the inner wall of the long oil pipe.

[0021] Step 2: Then, using the linear module, pull the grinding rod mechanism and the slag removal frame mechanism to the right to the initial position. The grinding rod mechanism automatically switches the grinding mode. Similarly, the linear module then drives the grinding rod mechanism and the slag removal frame mechanism to move to the left, starts the first servo motor, and drives the grinding rod mechanism to rotate. The grinding rod mechanism performs rough grinding on the inner wall of the long oil pipe. At the same time, the slag removal frame mechanism sucks and pushes the waste residue to the left until the grinding rod mechanism completes the rough grinding of the inner wall of the long oil pipe.

[0022] Step 3: Then, using the linear module, pull the grinding rod mechanism and the slag removal frame mechanism to the right again to their initial positions. The grinding rod mechanism switches the grinding mode again. Similarly, with the cooperation of the linear module, the grinding rod mechanism, the slag removal frame mechanism, and the first servo motor, the finishing and grinding of the inner wall of the long oil pipe is completed.

[0023] Beneficial effects

[0024] This invention provides an apparatus and method for grinding the inner wall of oil pipes. Compared with the prior art, it has the following advantages:

[0025] 1. A device and method for grinding the inner wall of an oil pipe, comprising a linear module, a grinding rod mechanism, a slag removal frame mechanism, a first servo motor, and a telescopic hose, with the first servo motor as the core power source. The output shaft of the first servo motor directly drives the grinding rod mechanism to rotate, generating the grinding power for grinding the inner wall of the oil pipe. Simultaneously, when the grinding rod mechanism rotates, it drives the slag removal frame mechanism to rotate synchronously through frictional transmission, thereby generating the power required for slag removal. This design eliminates the need for an additional independent power source for the slag removal function, simplifying the device structure and ensuring complete synchronization between the grinding and slag removal actions from a transmission logic perspective. This effectively avoids the problem of difficult slag removal due to the long length of the oil pipe, ensuring the continuity and cleanliness of grinding the inner wall of long oil pipes.

[0026] 2. A device and method for grinding the inner wall of an oil pipe, comprising a crossbar, a filter screen, a driven friction wheel, a fan, a spiral cleaning frame, and a scraper, wherein the slag removal frame mechanism adopts an integrated design of suction, pushing, and anti-clogging, achieving unidirectional discharge of waste slag throughout the process. When the long rod rotates, the active friction wheel drives the driven friction wheel to rotate through friction, causing the functional rod assembly to rotate synchronously. The fan inside the filter screen rotates to generate a suction force to the left, drawing the grinding waste slag towards the left end of the oil pipe. At the same time, the spiral cleaning frame rotates, further pushing the adsorbed waste slag to the left, forming a dual power of suction and pushing, ensuring that waste slag inside the long oil pipe does not accumulate in the grinding area. Meanwhile, the rotating scraper scrapes off the waste slag adhering to the surface of the filter screen in real time, preventing the filter screen from clogging and ensuring continuous and effective slag removal.

[0027] 3. A device and method for grinding the inner wall of oil pipes, comprising a long rod, an electric telescopic rod, a push-pull rod, a rhombus block, and a grinding block assembly, wherein the grinding head assembly is provided with three sets of grinding block assemblies, and the cutting abrasive grains on the grinding surface from right to left are coarse, medium, and fine, corresponding to the processes of excess material removal, rough grinding, and finishing grinding, respectively. The electric telescopic rod controls the push-pull rod to move the rhombus block to the left. By utilizing the inclined surface cooperation between the rhombus block and the trapezoidal block, the grinding block assembly at the corresponding position can be precisely pushed out, and the grinding mode can be quickly switched, greatly improving the grinding efficiency of long oil pipes.

[0028] 4. A device and method for grinding the inner wall of an oil pipe, wherein the inclined pipe can spray water in a directional manner to the contact part between the active friction wheel and the driven friction wheel through the cooperation between the bent pipe, the branch pipe and the inclined pipe, thereby ensuring that the contact part between the active friction wheel and the driven friction wheel is sufficiently cooled, and indirectly ensuring the continuity and stability of grinding long oil pipes.

[0029] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0030] Figure 1 This is a first perspective view of the present invention;

[0031] Figure 2 This is a second perspective view of the present invention;

[0032] Figure 3 For the present invention Figure 2 A magnified view of a section at point A in the middle;

[0033] Figure 4 This is the first assembly drawing of the grinding rod mechanism and the slag removal frame mechanism of the present invention;

[0034] Figure 5 This is the second assembly drawing of the grinding rod mechanism and the slag removal frame mechanism of the present invention;

[0035] Figure 6 This is a perspective view of the bent pipe of the present invention;

[0036] Figure 7 This is a sectional perspective view of the grinding rod mechanism and the slag removal frame mechanism of the present invention;

[0037] Figure 8 This is a partial sectional perspective view of the long rod of the present invention;

[0038] Figure 9 This is a sectional perspective view of the grinding head assembly of the present invention;

[0039] Figure 10 This is a perspective view of the grinding block assembly of the present invention;

[0040] Figure 11 This is a cross-sectional perspective view of the connecting pipe of the present invention;

[0041] Figure 12 This is a perspective view of the functional lever assembly of the present invention.

[0042] In the diagram: 1. Machine base; 2. Linear module; 3. Bearing seat; 4. Side plate; 5. Grinding rod mechanism; 51. Long rod; 52. Active friction wheel; 53. Hollow cavity; 54. Electric telescopic rod one; 55. Grinding head assembly; 551. Connecting rod; 552. Cylinder; 553. Grinding block assembly; 5531. Slide rod; 5532. Trapezoidal block; 5533. Second spring; 5534. Grinding wheel; 554. Push-pull rod; 555. Rhomboid block; 556. Inner slide plate; 557. First spring; 6. Slag removal frame mechanism; 61. Horizontal... 62. Rod; 63. Connecting box; 64. Connecting pipe; 65. Filter screen; 66. Functional rod assembly; 67. Inner rod; 68. Driven friction wheel; 69. Fan; 60. Spiral cleaning rack; 61. Scraper; 62. Bend; 63. Branch pipe; 64. Inclined pipe; 7. First servo motor; 8. Telescopic hose; 9. First roller; 10. Second roller; 11. Transmission mechanism; 12. Second servo motor; 13. Support frame; 14. Electric telescopic rod II; 15. Rubber pressure roller; 16. Vertical plate; 17. Support roller. Detailed Implementation

[0043] 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.

[0044] This invention provides two technical solutions:

[0045] like Figure 1 and Figure 2 The first embodiment is shown: an oil pipe inner wall grinding apparatus for oil pipe processing, comprising:

[0046] Machine base 1. A linear module 2 is fixedly mounted on the top right side of machine base 1. A support base 3 is mounted on the upper part of the linear module 2. A side plate 4 is fixedly mounted on the top left side of the support base 3. A first servo motor 7 is fixedly mounted on the lower right side of the side plate 4. A telescopic hose 8 is fixedly mounted on the upper right side of the side plate 4. A first roller 9 is rotatably mounted on the rear part of the top left side of machine base 1 via two brackets. A second roller 10 is rotatably mounted on the front part of the top left side of machine base 1 via two brackets. A transmission mechanism 11 is mounted on the left side of the left bracket. A drive mechanism is fixedly mounted on the front right side of the transmission mechanism 11. The second servo motor 12 of the second roller 10, a support frame 13 is fixedly installed on the top of the machine base 1 and behind the first roller 9, an electric telescopic rod 14 is fixedly installed on the top left and right sides of the support frame 13, the bottom of the electric telescopic rod 14 slides through the bottom of the support frame 13 and is fixedly installed with a U-shaped frame, a rubber pressure roller 15 is rotatably installed between the left and right side walls of the inner cavity of each U-shaped frame, two vertical plates 16 are fixedly installed on the top of the machine base 1 and to the right of the first roller 9 and the second roller 10, and four support rollers 17 are rotatably installed between the two vertical plates 16;

[0047] The grinding rod mechanism 5 is used to perform grinding operations on the inner wall of the long oil pipe to be processed. The grinding rod mechanism 5 is located on the lower left side of the side plate 4.

[0048] The slag removal mechanism 6 is used to push the waste slag generated during grinding to the left in a timely manner. The slag removal mechanism 6 is located on the upper left side of the side plate 4.

[0049] Through the coordinated operation of linear module 2, grinding rod mechanism 5, slag removal frame mechanism 6, first servo motor 7 and telescopic hose 8, with the first servo motor 7 as the core power source, its output shaft directly drives the grinding rod mechanism 5 to rotate, forming the grinding power for grinding the inner wall of the oil pipe. At the same time, when the grinding rod mechanism 5 rotates, it drives the slag removal frame mechanism 6 to rotate synchronously through the friction transmission between the grinding rod mechanism 5 and the slag removal frame mechanism 6, thereby generating the power required for slag removal. This design does not require an additional independent power source for the slag removal function, which simplifies the device structure and ensures that the grinding action and the slag removal action are completely synchronized from the transmission logic. It effectively avoids the problem of difficult discharge of waste residue due to the long length of the oil pipe, and ensures the continuity and cleanliness of grinding the inner wall of the long oil pipe.

[0050] like Figures 3 to 12The second embodiment is shown, the main difference from the first embodiment being: an oil pipe inner wall grinding device for oil pipe processing, the grinding rod mechanism 5 includes a long rod 51, the right end of the long rod 51 rotatably passes through the right wall of the side plate 4 and is fixedly connected to the output shaft of the first servo motor 7, the left outer wall of the long rod 51 is fixedly sleeved with an active friction wheel 52, the long rod 51 is located between the two lower support rollers 17, the left end of the long rod 51 has a hollow cavity 53 located to the left of the active friction wheel 52, an electric telescopic rod 54 is fixedly installed in the hollow cavity 53, the left end of the long rod 51 is provided with a grinding head assembly 55, the grinding head assembly 55 includes a connecting rod 551, the left side of the connecting rod 551 is fixedly provided with a cylinder 552, and the right side of the connecting rod 551 is connected to the long rod 551 by several bolts. The left side of the rod 51 is connected. Three grinding block assemblies 553 slide through the upper and lower walls of the cylinder 552 from right to left. A push-pull rod 554 slides through the middle of the right side of the cylinder 552. A rhomboid block 555 located inside the cylinder 552 is fixedly installed at the left end of the push-pull rod 554. An inner slide plate 556 is fixedly installed at the right end of the push-pull rod 554. The inner slide plate 556 slides between the inner walls of the connecting rod 551. A first spring 557 is sleeved on the outside of the push-pull rod 554. The first spring 557 is located between the left side of the inner slide plate 556 and the cylinder 552. Each grinding block assembly 553 includes a slide rod 5531. The slide rod 5531 slides through the outer wall of the cylinder 552. A trapezoidal block 55 is fixedly installed at one end of the slide rod 5531 located inside the cylinder 552. 32. Trapezoidal block 5532 is adapted to rhomboid block 555. A second spring 5533 is sleeved on the outside of slide rod 5531. The second spring 5533 is located between trapezoidal block 5532 and inner wall of cylinder 552. The other end of slide rod 5531 is equipped with grinding wheel 5534 by two bolts. Grinding wheel 5534 is located outside cylinder 552. The cutting abrasive grains distributed on the surface of grinding wheel 5534 in each grinding block assembly 553 from right to left are different. Slag removal frame mechanism 6 includes crossbar 61. The right end of crossbar 61 is fixedly set on the upper left side of side plate 4. Crossbar 61 is located between the two upper support rollers 17. The inside of crossbar 61 is connected to the inside of telescopic hose 8. The left end of crossbar 61 is fixedly set with connecting box 62. The left side of connecting box 62 is fixed. A connecting pipe 63 is provided, and a filter screen 64 is fixedly installed on the left side of the connecting pipe 63. A functional rod assembly 65 is rotatably connected between the connecting box 62, the connecting pipe 63, and the filter screen 64. A bent pipe 66 is fixedly installed at the rear of the crossbar 61, the connecting box 62, and the connecting pipe 63. The right end of the bent pipe 66 is fixedly connected to the rear left end of the crossbar 61. Several branch pipes 67 are evenly fixedly connected to the left rear wall of the bent pipe 66. An inclined pipe 68 is fixedly connected to the right front wall of the bent pipe 66 and passes through the rear wall of the connecting box 62. The functional rod assembly 65 includes an inner rod 651, which passes through the interior of the connecting box 62, the connecting pipe 63, and the filter screen 64. The right end of the inner rod 651 is rotatably connected to the right wall of the inner cavity of the connecting box 62.The left end of the inner rod 651 rotates through the left wall of the filter screen 64. A driven friction wheel 652 is fixedly fitted onto the right outer wall of the inner rod 651, located inside the connecting box 62. A fan 653, located inside the filter screen 64, is fixedly fitted onto the middle of the inner rod 651. A scraper 655, located outside the filter screen 64, is fixedly installed on the side wall of the inner rod 651, contacting the outer wall of the filter screen 64. A spiral cleaning frame 654 is fixedly installed on the left outer wall of the inner rod 651 via several support rods, located to the left of the filter screen 64. The long rod 51 rotates through the lower part of the connecting box 62, with the driving friction wheel 52 located inside the connecting box 62. The bottom of the driven friction wheel 652 contacts the top of the driving friction wheel 52.

[0051] Through the coordinated operation of the crossbar 61, filter screen 64, driven friction wheel 652, fan 653, spiral cleaning frame 654, and scraper 655, the slag removal frame mechanism 6 adopts an integrated design of suction, pushing, and anti-clogging, achieving unidirectional discharge of waste slag throughout the process. When the long rod 51 rotates, the active friction wheel 52 drives the driven friction wheel 652 to rotate through friction, causing the functional rod assembly 65 to rotate synchronously. The fan 653 inside the filter screen 64 rotates to generate a suction force to the left, drawing the grinding waste slag towards the left end of the oil pipe. At the same time, the spiral cleaning frame 654 rotates, further pushing the adsorbed waste slag to the left, forming a dual power of suction and pushing. This ensures that the waste slag inside the long oil pipe does not accumulate in the grinding area. Meanwhile, the scraper 655 rotates to scrape off the waste slag attached to the surface of the filter screen 64 in real time, preventing the filter screen 64 from clogging and ensuring continuous and effective slag removal. Through the long rod 51, electric telescopic rod 54, and push-pull mechanism, the slag removal mechanism achieves continuous and effective slag removal. The interaction between rod 554, rhombus block 555, and grinding block assembly 553, with three sets of grinding block assemblies 553 on the grinding head assembly 55, and the cutting abrasive grains on the surface of the grinding wheel 5534 from right to left being coarse, medium, and fine, respectively corresponding to the processes of excess material removal, rough grinding, and finishing grinding. The push-pull rod 554 is controlled by the electric telescopic rod 54 to move the rhombus block 555 to the left. By utilizing the inclined surface of the rhombus block 555 and the trapezoidal block 5532, the grinding block assembly 553 at the corresponding position can be precisely pushed out, quickly switching the grinding mode and greatly improving the grinding efficiency of long oil pipes. Through the interaction between the bend pipe 66, branch pipe 67, and inclined pipe 68, the inclined pipe 68 can spray water in a directional direction to the contact part of the active friction wheel 52 and the driven friction wheel 652, ensuring that the contact part of the active friction wheel 52 and the driven friction wheel 652 is sufficiently cooled, indirectly ensuring the continuity and stability of long oil pipe grinding.

[0052] This invention also provides a method for grinding the inner wall of an oil pipe for oil pipe processing, using an oil pipe inner wall grinding device, and the specific method includes the following steps:

[0053] Step 1: Place the long oil pipe to be processed between the tops of the first roller 9 and the second roller 10. Activate the electric telescopic rod 14 to push the rubber pressure roller 15 downwards, ensuring that the bottoms of both rubber pressure rollers 15 are in close contact with the top of the long oil pipe. Under the support of the first roller 9 and the second roller 10, combined with the pressing force of the rubber pressure rollers 15, the long oil pipe is bidirectionally limited, preventing axial movement or radial displacement during grinding. Then, activate the second servo motor 12, and the second roller 10 rotates with the cooperation of the transmission mechanism 11. The transmission mechanism 11 is prior art known to those skilled in the art. The transmission mechanism 11 mainly consists of a housing, a chain, and two sprockets. Both sprockets are rotatably connected inside the housing, with one end of one sprocket connected to... One end of the second roller 10 is fixedly connected, and one end of the other sprocket is fixedly connected to the output shaft of the second servo motor 12. The chain meshes between the two sprockets. During the process, the friction between the second roller 10, the first roller 9, and the outer wall of the long oil pipe is used to drive the long oil pipe to rotate at a set speed. Then, the linear module 2 drives the bearing seat 3 to move to the left. The linear module 2 is a prior art known to those skilled in the art. The grinding rod mechanism 5 and the slag removal frame mechanism 6 move to the left at a uniform speed. The long rod 51 moves along the guide channel formed by the two lower support rollers 17 to ensure that the long rod 51 is smoothly inserted into the inner cavity of the oil pipe. The first servo motor 7 is started to drive the grinding rod mechanism 5 to rotate. The grinding rod mechanism 5 moves to the left while rotating, grinding the inner wall of the long oil pipe. Excess material is ground away. During the process, while the long rod 51 rotates, the electric telescopic rod 54 is activated, pushing the inner slide plate 556 to slide to the left along the inner wall of the connecting rod 551. This, in turn, causes the rhombus block 555 to move to the left via the push-pull rod 554. The rhombus block 555 then comes into contact with the inclined surfaces of the trapezoidal blocks 5532 of the two adjacent grinding block assemblies 553. As the rhombus block 555 moves to the left, the trapezoidal blocks 5532, under the action of the inclined surface thrust, cause the sliding rod 5531 to extend radially outward along the cylinder 552, making the grinding wheel 5534 come into close contact with the inner wall of the oil pipe. The second spring 5533 is compressed. Since the cutting abrasive grains distributed on the surface of the grinding wheel 5534 in the three grinding block assemblies 553 from right to left are coarse, medium, and fine, the rightmost grinding wheel containing coarse abrasive grains in this step... 5534 preferentially contacts the inner wall of the long oil pipe. Under the combined motion of the rotation of the long rod 51 and the feed of the bearing seat 3, excess material on the inner wall of the oil pipe is quickly removed. When the long rod 51 rotates, the active friction wheel 52 and the driven friction wheel 652 drive the inner rod 651 to rotate synchronously through friction. The fan 653 rotates accordingly, generating a suction force to the left, which promptly sucks away the waste generated during grinding to the left. At the same time, the spiral cleaning frame 654 rotates with the inner rod 651, assisting in further sweeping and pushing the waste to the left, preventing waste residue from remaining on the inner wall of the long oil pipe and affecting the grinding operation. Meanwhile, the scraper 655 rotates to promptly scrape off the waste residue attached to the surface of the filter screen 64, preventing the filter screen 64 from clogging. During the process, since the right end of the telescopic hose 8 is connected to the external water tank and water pump,An external water pump is activated to draw water from the tank into the telescopic hose 8, which then flows into the crossbar 61. The water flows along the crossbar 61 into the bend 66. Part of the water is sprayed through the inclined pipe 68 onto the contact area between the driving friction wheel 52 and the driven friction wheel 652. The other part is evenly sprayed through the branch pipes 67 onto the grinding head assembly 55 and the grinding area inside the long oil pipe, achieving synchronous cooling of the grinding head assembly 55 and the inner wall of the oil pipe, preventing material deformation caused by high temperatures, until the grinding head assembly 55 completes the grinding operation on the excess material inside the long oil pipe.

[0054] Step 2: Then, activate the electric telescopic rod 54 to move the rhombus block 555 to the left, disengaging it from the grinding block assembly 553. The grinding block assembly 553 resets. Then, use the linear module 2 to pull the grinding rod mechanism 5 and the slag removal frame mechanism 6 to the right back to their initial positions. The grinding rod mechanism 5 automatically switches the grinding mode. During this process, activate the electric telescopic rod 54 again to move the rhombus block 555 to the left, pushing the two grinding block assemblies 553 located in the middle position to a side further apart. One of the grinding tools 5534 on the grinding block assembly 553 in the middle position... The grinding block assembly 553 on the far right and far left of the long oil pipe does not contact the inner wall of the long oil pipe, realizing the switch from the residual removal mode to the coarse grinding mode. Similarly, the linear module 2 drives the grinding rod mechanism 5 and the slag removal frame mechanism 6 to move to the left, starts the first servo motor 7, drives the grinding rod mechanism 5 to rotate, and the grinding rod mechanism 5 performs coarse grinding operation on the inner wall of the long oil pipe. At the same time, the slag removal frame mechanism 6 sucks the waste residue to the left and pushes the waste residue out in coordination with the cleaning function until the grinding rod mechanism 5 completes the coarse grinding of the inner wall of the long oil pipe, and all components stop working.

[0055] Step 3: Then, activate the electric telescopic rod 54 to move the rhombus block 555 to the left, disengaging it from the grinding block assembly 553. Next, use the linear module 2 to pull the grinding rod mechanism 5 and the slag removal frame mechanism 6 back to their initial positions to the right. The grinding rod mechanism 5 switches the grinding mode again. During this process, activate the electric telescopic rod 54 again to move the rhombus block 555 to the left, pushing the two upper and lower grinding block assemblies 553 on the far left to a side away from each other. One of the grinding tools 5534 on the far left grinding block assembly 553 contacts the inner wall of the long oil pipe, while the rightmost and middle grinding block assemblies 553 do not contact the inner wall of the long oil pipe, thus achieving the switch from coarse grinding mode to finishing grinding mode. Similarly, with the cooperation of the linear module 2, the grinding rod mechanism 5, the slag removal frame mechanism 6, and the first servo motor 7, the finishing grinding of the inner wall of the long oil pipe is completed.

[0056] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0057] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for grinding the inner wall of oil pipes, characterized in that, include: The machine platform has a linear module fixedly mounted on its top right side. A support base is mounted on the upper part of the linear module. A side plate is fixedly mounted on the top left side of the support base. A first servo motor is fixedly mounted on the lower right side of the side plate. A telescopic hose is fixedly mounted on the upper right side of the side plate. A first roller is rotatably mounted on the rear left side of the machine platform via two supports. A second roller is rotatably mounted on the front left side of the machine platform via two supports. A transmission mechanism is mounted on the left side of the left support. A second servo motor for driving the second roller is fixedly mounted on the front right side of the transmission mechanism. A support frame is fixedly mounted on the top of the machine platform and behind the first roller. Electric telescopic rods are fixedly mounted on both the left and right sides of the top of the support frame. The bottom of the electric telescopic rods slides through the bottom of the support frame and is fixedly mounted with a U-shaped frame. Rubber pressure rollers are rotatably mounted between the left and right side walls of the inner cavity of each U-shaped frame. Two vertical plates are fixedly mounted on the top of the machine platform and to the right of the first and second rollers. Four support rollers are rotatably mounted between the two vertical plates. A grinding rod mechanism is used to perform grinding operations on the inner wall of a long oil pipe to be processed. The grinding rod mechanism is located on the lower left side of the side plate. The slag removal frame mechanism is used to push the waste slag generated during grinding to the left in a timely manner. The slag removal frame mechanism is located on the upper left side of the side plate.

2. The oil pipe inner wall grinding device for oil pipe processing according to claim 1, characterized in that: The grinding rod mechanism includes a long rod, the right end of which rotatably passes through the right wall of the side plate and is fixedly connected to the output shaft of the first servo motor. An active friction wheel is fixedly sleeved on the left outer wall of the long rod. The long rod is located between two lower support rollers. A hollow cavity is opened at the left end of the long rod, located to the left of the active friction wheel. An electric telescopic rod is fixedly installed in the hollow cavity. A grinding head assembly is provided at the left end of the long rod.

3. The oil pipe inner wall grinding device for oil pipe processing according to claim 2, characterized in that: The grinding head assembly includes a connecting rod, a cylinder is fixedly installed on the left side of the connecting rod, and the right side of the connecting rod is connected to the left side of a long rod by several bolts. Three grinding block assemblies slide through the upper and lower walls of the cylinder from right to left, and a push-pull rod slides through the middle of the right side of the cylinder.

4. The oil pipe inner wall grinding device for oil pipe processing according to claim 3, characterized in that: The left end of the push-pull rod is fixedly provided with a rhombus-shaped block located inside the cylinder, and the right end of the push-pull rod is fixedly provided with an inner sliding plate. The inner sliding plate is slidably disposed between the inner walls of the connecting rod. The outside of the push-pull rod is fitted with a first spring, which is located between the left side of the inner sliding plate and the cylinder.

5. The oil pipe inner wall grinding device for oil pipe processing according to claim 4, characterized in that: Each of the grinding block assemblies includes a slide rod that slides through the outer wall of a cylinder. One end of the slide rod is fixedly fitted with a trapezoidal block located inside the cylinder, which is adapted to a rhomboid block. A second spring is sleeved on the outside of the slide rod, located between the trapezoidal block and the inner wall of the cylinder. The other end of the slide rod is fitted with an abrasive tool via two bolts. The abrasive tool is located outside the cylinder. From right to left, the cutting abrasive grains distributed on the surface of the abrasive tool in each of the grinding block assemblies are different.

6. The oil pipe inner wall grinding device for oil pipe processing according to claim 2, characterized in that: The slag removal frame mechanism includes a crossbar. The right end of the crossbar is fixedly installed on the upper left side of the side plate. The crossbar is located between two upper support rollers. The interior of the crossbar is connected to the interior of the telescopic hose. A connecting box is fixedly installed on the left end of the crossbar. A connecting pipe is fixedly installed on the left side of the connecting box. A filter screen is fixedly installed on the left side of the connecting pipe. A functional rod assembly is rotatably installed between the interior of the connecting box, the connecting pipe, and the filter screen.

7. The oil pipe inner wall grinding device for oil pipe processing according to claim 6, characterized in that: A bent pipe is fixedly installed at the rear of the crossbar, connecting box, and connecting pipe. The right end of the bent pipe is fixedly connected to the left rear end of the crossbar. Several branch pipes are evenly fixedly connected to the left rear wall of the bent pipe. An inclined pipe is fixedly connected to the right front wall of the bent pipe. The inclined pipe passes through the rear wall of the connecting box.

8. The oil pipe inner wall grinding device for oil pipe processing according to claim 6, characterized in that: The functional rod assembly includes an inner rod that passes through the interior of the connecting box, the connecting tube, and the filter screen. The right end of the inner rod is rotatably connected to the right wall of the inner cavity of the connecting box, and the left end of the inner rod rotatably passes through the left wall of the filter screen. A driven friction wheel is fixedly sleeved on the right outer wall of the inner rod, and the driven friction wheel is located inside the connecting box. A fan located inside the filter screen is fixedly sleeved on the middle part of the inner rod, and a scraper rod located outside the filter screen is fixedly installed on the side wall of the inner rod.

9. The oil pipe inner wall grinding device for oil pipe processing according to claim 8, characterized in that: The scraper bar contacts the outer wall of the filter screen. A spiral cleaning frame is fixedly installed on the left outer wall of the inner rod by several support rods. The spiral cleaning frame is located on the left side of the filter screen. The long rod rotates through the lower part of the connecting box. The active friction wheel is located inside the connecting box. The bottom of the driven friction wheel contacts the top of the active friction wheel.

10. A method for grinding the inner wall of an oil pipe for oil pipe processing, characterized in that: The method, employing the oil pipe inner wall grinding apparatus as described in any one of claims 1-9, comprises the following steps: Step 1: Place the long oil pipe to be processed between the tops of the first and second rollers. Activate the electric telescopic rod to push the rubber pressure rollers downwards, ensuring the bottoms of both rollers contact the top of the long oil pipe. With the cooperation of the first and second rollers and the two rubber pressure rollers, the long oil pipe is positioned. Next, activate the second servo motor. With the assistance of the transmission mechanism, the second roller rotates, using friction to rotate the long oil pipe. Then, the linear module moves the support seat to the left, causing the grinding rod mechanism and the slag removal frame mechanism to move to the left as well. Activate the first servo motor to drive the grinding rod mechanism to rotate. The grinding rod mechanism moves to the left while rotating, removing impurities from the long oil pipe. Excess material on the wall is ground off. While the grinding rod mechanism rotates, the friction force drives the slag removal frame mechanism to rotate as well, causing the slag removal frame mechanism to work and generate a suction force to the left, which promptly sucks the waste slag generated during grinding to the left. At the same time, the rotating slag removal frame mechanism further sweeps and pushes the waste slag to the left. During the process, since the right end of the telescopic hose is connected to the external water tank and water pump, the external water pump draws water from the water tank into the telescopic hose and then into the slag removal frame mechanism, which promptly cools the left end of the grinding rod mechanism and the contact area between the grinding rod mechanism and the slag removal frame mechanism until the grinding rod mechanism completes the grinding of excess material on the inner wall of the long oil pipe. Step 2: Then, using the linear module, pull the grinding rod mechanism and the slag removal frame mechanism to the right to the initial position. The grinding rod mechanism automatically switches the grinding mode. Similarly, the linear module then drives the grinding rod mechanism and the slag removal frame mechanism to move to the left, starts the first servo motor, and drives the grinding rod mechanism to rotate. The grinding rod mechanism performs rough grinding on the inner wall of the long oil pipe. At the same time, the slag removal frame mechanism sucks and pushes the waste residue to the left until the grinding rod mechanism completes the rough grinding of the inner wall of the long oil pipe. Step 3: Then, using the linear module, pull the grinding rod mechanism and the slag removal frame mechanism to the right again to their initial positions. The grinding rod mechanism switches the grinding mode again. Similarly, with the cooperation of the linear module, the grinding rod mechanism, the slag removal frame mechanism, and the first servo motor, the finishing and grinding of the inner wall of the long oil pipe is completed.

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