Steel pipe inner wall polishing device

Abstract

The invention belongs to the technical field of steel pipe grinding, and particularly relates to a steel pipe inner wall grinding device which comprises a U-shaped frame and a rotating cylinder, the bottom ends of the two sides of the U-shaped frame are each fixedly connected with two symmetrically-distributed rolling wheels, a mounting hole is formed in the surface of the top end of the U-shaped frame, and the hole wall of the mounting hole is fixedly connected with a first electric push rod. The steel pipe inner wall grinding device has the function of automatically and efficiently grinding and cleaning the inner wall of the steel pipe, the grinding device is not affected by the length of the steel pipe, meanwhile, the steel pipe inner wall grinding device is small in size, the use convenience of the steel pipe grinding device is effectively improved, and the reliability and efficiency of steel pipe inner wall grinding machining can be effectively improved; the steel pipe inner wall polishing device further has the functions of checking and repairing thickness unevenness of the inner wall of the steel pipe, so that the quality of the steel pipe leaving a factory can be effectively improved, and the strength stability, the effect and the service life of the steel pipe in use are guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of steel pipe grinding, and in particular relates to a steel pipe inner wall grinding device. Background Art

[0002] Steel pipe is a hollow long strip of pipe made of steel as raw material and processed by a specific process. It is widely used in fluid transportation, structural support and other fields. The inner wall of the steel pipe is in contact with the air, and oxygen and iron undergo oxidation reaction to generate rust. It also forms an electrolyte solution with water in the environment, which accelerates electrochemical corrosion. Based on the above oxidation situation, the inner wall of the steel pipe needs to be polished before leaving the factory. It is necessary to spray the corrosion-resistant layer after polishing. Grinding can remove the loose oxide layer on the inner wall of the steel pipe, making the surface of the steel pipe smoother and reducing corrosion hazards. It can also reduce fluid transportation resistance and improve transportation efficiency. At the same time, it provides a good foundation for subsequent anti-corrosion coating and other treatments, and enhances the comprehensive performance and service life of the steel pipe. For example, the authorization announcement number is CN214264939U, which discloses a steel pipe inner wall polishing device.

[0003] At present, due to the length limitation of the long steel pipes produced by steel plants, the existing steel pipe inner wall grinding device is difficult to reliably penetrate into the steel pipe for comprehensive and effective grinding. Therefore, the staff needs to fix the grinding tool on the long rod, and then manually extend the grinding tool into the long steel pipe to perform manual grinding of the inner wall of the long steel pipe. However, since the specific condition of the inner wall of the steel pipe cannot be clearly observed, it is very easy to miss the grinding during the grinding process, and the manual operation is time-consuming and laborious, which not only reduces the reliability and efficiency of the inner wall grinding of the steel pipe, but also increases the labor intensity of the staff. In addition, during the production process of long steel pipes, due to production process deviations and environmental factors, the inner wall is prone to local uneven thickness, but the existing grinding device cannot effectively solve this problem, resulting in quality defects in the long steel pipes leaving the factory, affecting the strength stability, effect and life of the long steel pipes.

[0004] We propose a steel pipe inner wall grinding device to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a steel pipe inner wall grinding device in view of the above problems.

[0006] To achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a steel pipe inner wall grinding device, comprising a U-shaped frame and a rotating cylinder, two symmetrically distributed rollers are fixedly connected to the bottom ends of both sides of the U-shaped frame, a mounting hole is opened on the top surface of the U-shaped frame, and a first electric push rod is fixedly connected to the hole wall of the mounting hole, a curved positioning block is fixedly connected to the moving end of the first electric push rod, and a control mechanism is fixedly connected to the top surface of the U-shaped frame; The side end of the rotating cylinder is fixedly connected with a rotating mechanism, and the side end of the rotating mechanism is fixedly connected with a traveling mechanism; A connecting ring is sleeved on the outer wall of one end of the rotating cylinder close to the rotating mechanism, and two threaded holes are provided on the outer wall of the connecting ring, and bolts for positioning the connecting ring are threadedly connected to the hole walls of the threaded holes, and a threaded blind hole matched with the bolt is provided on the outer wall of the rotating cylinder, and a high-temperature resistant polished steel wire brush ring is fixedly sleeved on the outer wall of the connecting ring; An inner wall inspection mechanism is fixedly connected to one end of the rotating cylinder away from the rotating mechanism; The inner wall of the rotating cylinder is fixedly connected with an inner wall repairing mechanism.

[0007] In the above-mentioned steel pipe inner wall grinding device, the control mechanism includes a PLC controller, an alarm and a mobile power supply fixedly connected to the top surface of the U-shaped frame, the upper surface of the U-shaped frame is fixedly connected to a heat dissipation mesh bracket, and the top inclined surface of the heat dissipation mesh bracket is fixedly connected to a touch screen computer.

[0008] In the above-mentioned steel pipe inner wall grinding device, the rotating mechanism includes an extension tube fixedly connected to the outer wall of the rotating cylinder, the outer wall of the extension tube is fixedly sleeved with a rotating bearing, the outer ring outer wall of the rotating bearing is fixedly sleeved with a fixed cover, the inner wall of the fixed cover is fixedly connected with a fixed bracket, the inner wall of the fixed bracket is fixedly connected with a rotating motor, the output end of the rotating motor is fixedly connected with a transmission gear, and the inner wall of the side end of the extension tube is fixedly connected with an internal gear ring meshing with the transmission gear.

[0009] In the above-mentioned steel pipe inner wall grinding device, the traveling mechanism includes a U-shaped debugging rod fixedly connected to the outer wall of the fixed cover, the rod wall of the U-shaped debugging rod is movably sleeved with an adjustment sleeve, the outer wall of the adjustment sleeve is fixedly connected with a multi-stage electric push rod, the fixed end outer wall of the multi-stage electric push rod is fixedly connected with a pipeline robot, the top end of the pipeline robot is fixedly connected with a second electric push rod and a wiring harness connector, and the movable end of the second electric push rod is fixedly connected with a rubber positioning block.

[0010] In the above-mentioned steel pipe inner wall grinding device, the inner wall inspection mechanism includes a three-way pipe fixedly connected to the side end of the rotating cylinder, and the inner walls at both ends of the three-way pipe are respectively fixedly connected to a multi-frequency microwave inspection probe and a night camera, and the top surface of the U-shaped frame is fixedly connected to the microwave inspection instrument body.

[0011] In the above-mentioned steel pipe inner wall grinding device, the inner wall repair mechanism includes a fixing ring fixedly connected to the inner wall of the rotating cylinder, the inner wall of the fixing ring is fixedly connected to a third electric push rod, the moving end of the third electric push rod is fixedly connected to a connecting block, the outer wall of the rotating cylinder is provided with two rectangular movable through holes, and the hole wall of the rectangular movable through hole is movably connected with a repair rod, the bottom end of the repair rod is fixedly sleeved with a connecting shaft, the outer wall of the connecting block is provided with a slot, and the slot wall of the slot is provided with two jacks matching the side end of the connecting shaft, the rod wall of the repair rod is hinged with a positioning rod, the bottom end of the positioning rod is hinged with an adjusting block, the outer wall of the rotating cylinder is provided with an adjusting slot matching the adjusting block, the adjusting block is fixedly connected to the slot wall of the adjusting slot by a screw, the side end inner wall of the rotating cylinder is fixedly connected with an infrared ranging sensor, the outer wall of the rotating cylinder is fixedly sleeved with a heat insulation cover, the outer wall of the heat insulation cover is provided with a groove, and the groove wall of the groove is fixedly sleeved with a heating coil.

[0012] In the above-mentioned steel pipe inner wall grinding device, the outer walls of the fixing ring and the connecting block are provided with a plurality of harness through holes for the harness to pass through, and a conductive slip ring is fixedly embedded on the side of the rotating cylinder close to the extension tube.

[0013] In the above-mentioned steel pipe inner wall grinding device, the outer walls of the rotating cylinder and the fixed cover are fixedly connected with multiple telescopic rods, the side ends of the telescopic rods are fixedly connected with positioning wheels, the outer walls of the telescopic rods are sleeved with positioning springs, and the two ends of the positioning springs are respectively fixedly connected to the outer walls of the fixed ends of the telescopic rods and the outer walls of the positioning wheels.

[0014] Compared with the existing technology, the advantages of a steel pipe inner wall grinding device are: Through the travel mechanism, rotating cylinder, rotating mechanism and high temperature resistant grinding wire brush ring, when the inner wall of the long steel pipe to be polished needs to be polished and cleaned, the steel pipe inner wall polishing device is first moved to the working position, and then the first electric push rod and the arc positioning block are used to stably limit the long steel pipe to be polished on the ground through the control mechanism, and then the inner wall rotating mechanism and the traveling mechanism are controlled to work automatically through the control program and PLC controller pre-installed on the touch screen computer, and the high temperature resistant grinding wire brush ring is driven to rotate, and the high temperature resistant grinding wire brush ring is driven to automatically walk along the inner wall of the long steel pipe to be polished, so as to realize comprehensive and reliable polishing treatment of the inner wall of the long steel pipe to be polished. The mechanism enables the steel pipe inner wall polishing device to have the function of automatic and efficient polishing and cleaning of the inner wall of the steel pipe, and the polishing device is not affected by the length of the steel pipe. At the same time, the steel pipe inner wall polishing device is small in size, which effectively improves the convenience of using the steel pipe polishing device, and can effectively improve the reliability and efficiency of the steel pipe inner wall polishing processing, and reduces the labor intensity of the staff.

[0015] Through the travel mechanism and inner wall inspection mechanism, when the travel mechanism drives the rotating drum to automatically travel on the inner wall of the long steel pipe to be polished, the multi-frequency microwave inspection probe and the night camera in the inner wall inspection mechanism can rotate to comprehensively scan and inspect the inner wall of the long steel pipe to be polished, which can not only clearly understand the distribution of oxidized impurities on the inner wall of the steel pipe, but also timely discover the uneven thickness of the inner wall of the long steel pipe to be polished, and improve the effect of subsequent polishing treatment of the long steel pipe to be polished, and ensure that the uneven thickness of the inner wall of the long steel pipe to be polished can be repaired in time and accurately, thereby improving the reliability and effect of the use of the steel pipe inner wall polishing device, and can effectively improve the quality of the steel pipes leaving the factory, while ensuring the strength stability, effect and life of the steel pipe.

[0016] Through the inner wall inspection mechanism and the inner wall repair mechanism, when the inner wall inspection mechanism finds that the inner wall of the long steel pipe to be polished has an uneven thickness area, the PLC controller controls the inner wall repair mechanism to automatically and efficiently repair the uneven thickness area. After the inner wall of the long steel pipe to be polished is repaired, the PLC controller controls the multi-stage electric push rod to retract. After the multi-stage electric push rod retracts, the second electric push rod also drives the rubber positioning block to move downward, and controls the pipeline robot to start again, so as to complete the subsequent inner wall polishing of the long steel pipe to be polished, and the multi-stage electric push rod During the retraction process of the moving end of the rod, the multi-frequency microwave inspection probe of the inner wall inspection mechanism once again checks the thickness uniformity of the just repaired position. If it is still too thick, the overly thick position can be repaired by rotating grinding with a high-temperature resistant steel wire brush ring. If it is still too thin, it means that the long steel pipe has quality defects. The staff will promptly mark the steel pipe as unqualified to avoid unqualified steel pipes leaving the factory. This mechanism enables the steel pipe inner wall grinding device to have the function of inspecting and repairing the uneven thickness of the steel pipe inner wall, thereby effectively improving the quality of the steel pipes leaving the factory. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a steel pipe inner wall grinding device provided by the present invention; Figure 2 It is a schematic structural diagram of a cross-section of a steel pipe inner wall grinding device provided by the present invention; Figure 3 It is a structural schematic diagram of a rotating mechanism in a steel pipe inner wall grinding device provided by the present invention; Figure 4 It is a structural schematic diagram of an inner wall inspection mechanism in a steel pipe inner wall grinding device provided by the present invention; Figure 5 It is a structural schematic diagram of an inner wall repair mechanism in a steel pipe inner wall grinding device provided by the present invention; Figure 6 It is a structural schematic diagram of a repair rod part in a steel pipe inner wall grinding device provided by the present invention; Figure 7 It is a structural schematic diagram of a high temperature resistant grinding wire brush ring part in a steel pipe inner wall grinding device provided by the present invention.

[0018] In the figure: 1 U-shaped frame, 2 rotating cylinder, 3 roller, 4 first electric push rod, 5 control mechanism, 51 PLC controller, 52 alarm, 53 mobile power supply, 54 heat dissipation mesh bracket, 55 touch screen computer, 6 rotating mechanism, 61 extension tube, 62 rotating bearing, 63 fixed cover, 64 fixed bracket, 65 rotating motor, 66 transmission gear, 67 inner gear ring, 7 travel mechanism, 71 U-shaped debugging rod, 72 adjustment sleeve, 73 multi-stage electric push rod, 74 pipeline robot, 75 second electric push rod, 76 harness connector, 77 rubber positioning block, 8 inner wall inspection mechanism, 81 three-way Tube, 82 multi-frequency microwave inspection probe, 83 night camera, 84 microwave inspection instrument body, 9 inner wall repair mechanism, 91 fixing ring, 92 third electric push rod, 93 connecting block, 94 rectangular moving through hole, 95 repair rod, 96 connecting shaft, 97 positioning rod, 98 adjustment block, 99 adjustment slot, 910 infrared ranging sensor, 911 heat insulation cover, 912 heating coil, 10 arc positioning block, 11 connecting ring, 12 threaded hole, 13 bolt, 14 high temperature resistant grinding wire brush ring, 15 wiring harness through hole, 16 conductive slip ring, 17 telescopic rod, 18 positioning wheel, 19 positioning spring. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] like Figure 1-Figure 7 As shown, a steel pipe inner wall grinding device includes a U-shaped frame 1 and a rotating cylinder 2, two symmetrically distributed rollers 3 are fixedly connected to the bottom ends of both sides of the U-shaped frame 1, a mounting hole is opened on the top surface of the U-shaped frame 1, and a first electric push rod 4 is fixedly connected to the hole wall of the mounting hole, an arc-shaped positioning block 10 is fixedly connected to the movable end of the first electric push rod 4, a control mechanism 5 is fixedly connected to the top surface of the U-shaped frame 1, the control mechanism 5 includes a PLC controller 51, an alarm 52 and a mobile power supply 53 fixedly connected to the top surface of the U-shaped frame 1, a heat dissipation mesh bracket 54 is fixedly connected to the upper surface of the U-shaped frame 1, and a touch screen computer 55 is fixedly connected to the top inclined surface of the heat dissipation mesh bracket 54.

[0021] The side end of the rotating cylinder 2 is fixedly connected with a rotating mechanism 6, and the rotating mechanism 6 includes an extension tube 61 fixedly connected to the outer wall of the rotating cylinder 2, the outer wall of the extension tube 61 is fixedly sleeved with a rotating bearing 62, the outer ring outer wall of the rotating bearing 62 is fixedly sleeved with a fixed cover 63, the inner wall of the fixed cover 63 is fixedly connected with a fixed bracket 64, the inner wall of the fixed bracket 64 is fixedly connected with a rotating motor 65, the output end of the rotating motor 65 is fixedly connected with a transmission gear 66, the inner wall of the side end of the extension tube 61 is fixedly connected with an inner gear ring 67 meshing with the transmission gear 66, and the side end of the rotating mechanism 6 is fixedly connected There is a traveling mechanism 7, which includes a U-shaped debugging rod 71 fixedly connected to the outer wall of the fixed cover 63, the rod wall of the U-shaped debugging rod 71 is movably sleeved with an adjusting sleeve 72, the outer wall of the adjusting sleeve 72 is fixedly connected with a multi-stage electric push rod 73, the fixed end outer wall of the multi-stage electric push rod 73 is fixedly connected with a pipeline robot 74, the top end of the pipeline robot 74 is fixedly connected with a second electric push rod 75 and a wiring harness connector 76, and the moving end of the second electric push rod 75 is fixedly connected with a rubber positioning block 77. This mechanism enables the steel pipe inner wall grinding device to have the function of automatically and efficiently grinding and cleaning the inner wall of the steel pipe.

[0022] A connecting ring 11 is sleeved on the outer wall of one end of the rotating cylinder 2 close to the rotating mechanism 6, and two threaded holes 12 are provided on the outer wall of the connecting ring 11, and the hole walls of the threaded holes 12 are threadedly connected with bolts 13 for positioning the connecting ring 11, and a threaded blind hole matching the bolts 13 is provided on the outer wall of the rotating cylinder 2, and a high-temperature resistant grinding wire brush ring 14 is fixedly sleeved on the outer wall of the connecting ring 11, and an inner wall inspection mechanism 8 is fixedly connected to the end of the rotating cylinder 2 away from the rotating mechanism 6, and the inner wall inspection mechanism 8 includes a three-way pipe 81 fixedly connected to the side end of the rotating cylinder 2, and a multi-frequency microwave inspection probe 82 and a night camera 83 are fixedly connected to the inner walls of the two ends of the three-way pipe 81, respectively, and a microwave inspection instrument body 84 is fixedly connected to the top surface of the U-shaped frame 1. This mechanism enables the staff to clearly observe the specific conditions of the inner wall of the steel pipe and ensure the reliability of the grinding treatment of the inner wall of the steel pipe.

[0023] The inner wall of the rotating cylinder 2 is fixedly connected with an inner wall repair mechanism 9, and the inner wall repair mechanism 9 includes a fixing ring 91 fixedly connected with the inner wall of the rotating cylinder 2, and the inner wall of the fixing ring 91 is fixedly connected with a third electric push rod 92, and the movable end of the third electric push rod 92 is fixedly connected with a connecting block 93, and the outer wall of the rotating cylinder 2 is provided with two rectangular movable through holes 94, and the hole wall of the rectangular movable through hole 94 is movably connected with a repair rod 95, and the bottom end of the repair rod 95 is fixedly sleeved with a connecting shaft 96, and the outer wall of the connecting block 93 is provided with a slot, and the slot wall of the slot is provided with two jacks matched with the side ends of the connecting shaft 96, and the rod wall of the repair rod 95 is hinged with a positioning rod 97, An adjusting block 98 is hinged at the bottom end of the positioning rod 97, and an adjusting groove 99 matching with the adjusting block 98 is provided on the outer wall of the rotating cylinder 2. The adjusting block 98 is fixedly connected to the groove wall of the adjusting groove 99 by screws. An infrared ranging sensor 910 is fixedly connected to the inner wall of the side end of the rotating cylinder 2. A heat insulation cover 911 is fixedly sleeved on the outer wall of the rotating cylinder 2. A groove is provided on the outer wall of the heat insulation cover 911, and a heating coil 912 is fixedly sleeved on the groove wall of the groove. This mechanism enables the steel pipe inner wall grinding device to have the function of inspecting and repairing the uneven thickness of the inner wall of the steel pipe, thereby effectively improving the quality of the steel pipes leaving the factory, and ensuring the strength stability, effect and life of the steel pipes.

[0024] The outer walls of the fixing ring 91 and the connecting block 93 are provided with a plurality of wiring harness through holes 15 for the wiring harness to pass through. A conductive slip ring 16 is fixedly embedded on the side of the rotating cylinder 2 close to the extension tube 61. The conductive slip ring 16 can ensure that the electrical connection of the powered equipment in the rotating part is stable and reliable. The outer walls of the rotating cylinder 2 and the fixed cover 63 are fixedly connected with a plurality of telescopic rods 17. The side ends of the telescopic rods 17 are fixedly connected with positioning wheels 18. The outer walls of the telescopic rods 17 are sleeved with positioning springs 19. The two ends of the positioning springs 19 are respectively fixedly connected to the outer walls of the fixed ends of the telescopic rods 17 and the outer walls of the positioning wheels 18. The cooperation of the telescopic rods 17, the positioning springs 19 and the positioning wheels 18 can constrain the rotating cylinder 2 to be at the central axis inside the steel pipe, thereby ensuring the reliability of the use of the grinding device.

[0025] The first electric push rod 4, the alarm 52, the rotating motor 65, the pipeline robot 74, the third electric push rod 92, the multi-stage electric push rod 73, the heating coil 912 and the second electric push rod 75 are electrically connected to the output end of the PLC controller 51 through wires and the wiring harness connector 76, the touch screen computer 55, the output end of the microwave inspection instrument body 84 and the infrared ranging sensor 910 are all electrically connected to the input end of the PLC controller 51 through wires and the wiring harness connector 76, the night camera 83 is electrically connected to the video interface of the touch screen computer 55 through wires, the multi-frequency microwave inspection probe 82 is electrically connected to the input end of the microwave inspection instrument body 84 through a data line and the wiring harness connector 76, and the mobile power supply 53 can provide stable power supply to the above-mentioned powered devices. The above-mentioned powered devices and electrical connections are all existing technologies and are not described here.

[0026] The operating principle of the present invention is described as follows: when the inner wall of a long steel pipe needs to be polished, first select a steel pipe inner wall polishing device that matches the inner diameter of the long steel pipe to be polished, then move the steel pipe inner wall polishing device to a side end of the long steel pipe to be polished through the roller 3, and control the first electric push rod 4 to extend through the control program pre-installed on the touch screen computer 55 and the PLC controller 51, so that the first electric push rod 4 pushes the arc-shaped positioning block 10 to squeeze the outer wall of the side end of the long steel pipe to be polished, and the long steel pipe to be polished is stably limited on the ground; Then, the control program pre-installed on the touch screen computer 55 and the PLC controller 51 control the inner wall inspection mechanism 8, the rotating mechanism 6 and the traveling mechanism 7 to work automatically. After the pipeline robot 74 of the traveling mechanism 7 is started, it will automatically push the inner wall inspection mechanism 8, the rotating cylinder 2 and the rotating mechanism 6 into the interior of the long steel pipe to be polished, and the multiple positioning wheels 18 will contact the inner wall of the long steel pipe to be polished. In addition, the elastic force of the positioning spring 19 and the cooperation of the telescopic rod 17 can adjust the rotating cylinder 2 to the central axis of the long steel pipe to be polished, so as to ensure that the inner wall of the long steel pipe to be polished is polished and To improve the accuracy of repair and inspection work, at the same time, the rotating motor 65 of the rotating mechanism 6 is controlled to start, and the rotating motor 65 drives the extension rod to rotate through the transmission gear 66 and the inner gear ring 67, and drives the rotating cylinder 2 to rotate. After the rotating cylinder 2 rotates, it drives the high-temperature resistant grinding wire brush ring 14 to rotate through the bolt 13 and the connecting ring 11, and is driven to move along the axis. The rotating high-temperature resistant grinding wire brush ring 14 can fully and efficiently grind and clean the oxidized impurities on the inner wall of the long steel pipe, ensuring the cleanliness of the inner wall of the long steel pipe, and the grinding of the inner wall of the steel pipe is not limited by the length of the steel pipe; While the inner wall grinding device of the steel pipe is working, the night camera 83 is driven to rotate by the rotating cylinder 2 and the three-way pipe 81, and then the night camera 83 comprehensively captures a clear image of the inner wall of the long steel pipe to be polished and transmits it to the touch screen computer 55, and the image captured by the night camera 83 is played through the touch screen computer 55, so that the staff can understand the distribution of oxidized impurities on the inner wall of the long steel pipe to be polished in real time, and can timely control the travel speed of the pipeline robot 74 through the touch screen computer 55 and the PLC controller 51. For example, if there are too many oxidized impurities somewhere on the inner wall of the long steel pipe to be polished, the working By reducing the travel speed of the pipeline robot 74, the rotating high-temperature resistant grinding wire brush ring 14 has sufficient time to reliably grind and clean the area, thereby ensuring the effect of grinding the inner wall of the long steel pipe to be polished. This mechanism enables the steel pipe inner wall grinding device to have the function of automatically and efficiently grinding and cleaning the inner wall of the steel pipe, and the grinding device is not affected by the length of the steel pipe. At the same time, the steel pipe inner wall grinding device is compact, which effectively improves the convenience of using the steel pipe grinding device, and can effectively improve the reliability and efficiency of the steel pipe inner wall grinding process, and reduces the labor intensity of the staff; While the steel pipe inner wall grinding device is working, the multi-frequency microwave inspection probe 82 will also be driven to rotate by the rotating cylinder 2 and the three-way pipe 81, and will scan and inspect the inner wall of the long steel pipe to be tested. The inspection result is transmitted to the microwave inspection instrument body 84 through the wiring harness and the wiring harness connector 76. The multi-frequency microwave inspection probe 82 emits microwaves to the inner wall of the steel pipe. Since the rotating cylinder 2 is positioned at the axis of the pipeline axis, the microwaves emitted by the multi-frequency microwave inspection probe 82 at different angles are at the same distance from the inner wall of the long steel pipe to be polished, thereby ensuring the accuracy of the multi-frequency microwave inspection probe 82 in inspecting the uneven thickness of the inner wall of the long steel pipe to be polished. Specifically, the multi-frequency microwave inspection probe 82 emits microwaves to the inner wall of the steel pipe. Based on the microwaves in different media, the multi-frequency microwave inspection probe 82 can detect the uneven thickness of the inner wall of the long steel pipe to be polished. According to the principle of different propagation characteristics in the mass, when the microwave encounters the place where the thickness of the inner wall of the long steel pipe to be polished changes, the signal will change due to reflection, refraction, scattering and absorption, such as changes in the amplitude, phase and frequency of the signal. Then, after the receiving module in the multi-frequency microwave inspection probe 82 receives these changed signals, it will be transmitted to the microwave inspection instrument body 84. After being processed and analyzed by the microwave inspection instrument body 84, the relevant electrical signals representing the abnormal thickness of the inner wall of the long steel pipe to be polished are fed back to the PLC controller 51. After receiving the electrical signals related to these abnormal characteristics, the PLC controller 51 will control the alarm 52 to sound an alarm. The alarm 52 will remind the staff that the inner wall of the long steel pipe to be polished has uneven thickness. At the same time, the automatic movement of the pipeline robot 74 is paused, and then the PLC controller 51 also controls the second electric push rod 75, the third electric push rod 92 and the heating coil 912 to start. The second electric push rod 75 pushes the rubber positioning block 77 to contact the inner wall of the long steel pipe to be polished, so as to realize the reliable positioning of the pipeline robot 74 and avoid the situation that the pipeline robot 74 shakes during the repair process caused by the rotation of the repair rod 95. After the heating coil 912 is energized, it can heat up the uneven thickness position of the inner wall of the long steel pipe to be polished, soften the uneven thickness position of the inner wall of the steel pipe, reduce the subsequent repair resistance of the repair rod 95, and ensure the repair effect and speed. After the third electric push rod 92 is started, the third electric push rod 92 pushes the connecting block 97 to contact the inner wall of the long steel pipe to be polished. 3 moves, and the infrared distance sensor 910 also monitors the distance between the connecting block 93 in real time, and converts the distance value into an electrical signal and transmits it to the PLC controller 51. When the infrared distance sensor 910 checks that the distance between the connecting block 93 meets the distance threshold preset by the PLC controller 51, the PLC controller 51 promptly controls the moving end of the second electric push rod 75 to stop moving. During the movement of the connecting block 93, under the restriction of the adjustment block 98 and the positioning rod 97, the repair rod 95 will be unfolded. After unfolding, the top of the repair rod 95 contacts the inner wall of the qualified area of ​​the long steel pipe to be polished. Then, the multi-stage electric push rod 73 is started again in the controller of the touch screen computer 55 and the PLC controller 51. When the moving end of the multi-stage electric push rod 73 is extended, it will push the rotating cylinder 2 in the rotating state to move through the rotating mechanism 6. The rotating cylinder 2 drives the inner wall repair mechanism 9 to approach the position where the inner wall thickness of the long steel pipe to be polished is uneven as discovered by the multi-frequency microwave inspection probe 82. The repair rod 95 that rotates and is reliably positioned can push the softened protruding part of the heating coil 912 to the recessed area to compensate for the lack of material in this area, thereby ensuring that the inner wall thickness of the long steel pipe to be polished is uniform. After the inner wall of the long steel pipe to be polished is repaired, the PLC controller 51 controls the multi-stage electric push rod 73 to retract. After the multi-stage electric push rod 73 has retracted, the second electric push rod 75 also drives the rubber positioning block 77 to move downward, and controls the pipeline robot 74 to start again. , complete the subsequent inner wall grinding treatment of the long steel pipe to be polished, and during the retraction of the moving end of the multi-stage electric push rod 73, the multi-frequency microwave inspection probe 82 of the inner wall inspection mechanism 8 again checks the thickness uniformity of the just repaired position. If it is still too thick, the over-thick position can be repaired by grinding with a rotating high-temperature resistant grinding wire brush ring 14. If it is still too thin, it means that the long steel pipe has quality defects. The staff will promptly mark the steel pipe as unqualified to avoid unqualified steel pipes from leaving the factory. This mechanism enables the steel pipe inner wall grinding device to have the function of inspecting and repairing the uneven thickness of the steel pipe inner wall, thereby effectively improving the quality of the steel pipes leaving the factory, and ensuring the strength stability, effect and life of the steel pipes.

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A steel pipe inner wall grinding device, comprising a U-shaped frame (1) and a rotating drum (2), characterized in that: Two symmetrically distributed rollers (3) are fixedly connected to the bottom ends of both sides of the U-shaped frame (1); a mounting hole is provided on the top surface of the U-shaped frame (1); a first electric push rod (4) is fixedly connected to the hole wall of the mounting hole; a curved positioning block (10) is fixedly connected to the movable end of the first electric push rod (4); and a control mechanism (5) is fixedly connected to the top surface of the U-shaped frame (1); A rotating mechanism (6) is fixedly connected to the side end of the rotating cylinder (2), and a traveling mechanism (7) is fixedly connected to the side end of the rotating mechanism (6); A connecting ring (11) is sleeved on the outer wall of one end of the rotating cylinder (2) close to the rotating mechanism (6); two threaded holes (12) are provided on the outer wall of the connecting ring (11); bolts (13) for positioning the connecting ring (11) are threadedly connected to the hole walls of the threaded holes (12); a threaded blind hole matching the bolts (13) is provided on the outer wall of the rotating cylinder (2); and a high-temperature resistant polished steel wire brush ring (14) is fixedly sleeved on the outer wall of the connecting ring (11); An inner wall inspection mechanism (8) is fixedly connected to one end of the rotating cylinder (2) away from the rotating mechanism (6); An inner wall repair mechanism (9) is fixedly connected to the inner wall of the rotating cylinder (2).

2. A steel pipe inner wall grinding device according to claim 1, characterized in that: The control mechanism (5) comprises a PLC controller (51), an alarm (52) and a mobile power supply (53) fixedly connected to the top surface of the U-shaped frame (1); a heat dissipation mesh bracket (54) is fixedly connected to the upper surface of the U-shaped frame (1); and a touch screen computer (55) is fixedly connected to the top inclined surface of the heat dissipation mesh bracket (54).

3. A steel pipe inner wall grinding device according to claim 1, characterized in that: The rotating mechanism (6) comprises an extension tube (61) fixedly connected to the outer wall of the rotating cylinder (2); a rotating bearing (62) is fixedly sleeved on the outer wall of the extension tube (61); a fixed cover (63) is fixedly sleeved on the outer wall of the outer ring of the rotating bearing (62); a fixed bracket (64) is fixedly connected to the inner wall of the fixed cover (63); a rotating motor (65) is fixedly connected to the inner wall of the fixed bracket (64); an output end of the rotating motor (65) is fixedly connected to a transmission gear (66); and an inner toothed ring (67) meshing with the transmission gear (66) is fixedly connected to the inner wall of the side end of the extension tube (61).

4. A steel pipe inner wall grinding device according to claim 3, characterized in that: The travel mechanism (7) comprises a U-shaped adjustment rod (71) fixedly connected to the outer wall of the fixed cover (63); the rod wall of the U-shaped adjustment rod (71) is movably sleeved with an adjustment sleeve (72); the outer wall of the adjustment sleeve (72) is fixedly connected to a multi-stage electric push rod (73); the outer wall of the fixed end of the multi-stage electric push rod (73) is fixedly connected to a pipeline robot (74); the top end of the pipeline robot (74) is fixedly connected to a second electric push rod (75) and a wiring harness connector (76); and the movable end of the second electric push rod (75) is fixedly connected to a rubber positioning block (77).

5. A steel pipe inner wall grinding device according to claim 4, characterized in that: The inner wall inspection mechanism (8) comprises a three-way pipe (81) fixedly connected to the side end of the rotating cylinder (2), the inner walls at both ends of the three-way pipe (81) are respectively fixedly connected to a multi-frequency microwave inspection probe (82) and a night camera (83), and the top surface of the U-shaped frame (1) is fixedly connected to a microwave inspection instrument body (84).

6. A steel pipe inner wall grinding device according to claim 5, characterized in that: The inner wall repair mechanism (9) comprises a fixing ring (91) fixedly connected to the inner wall of the rotating cylinder (2); the inner wall of the fixing ring (91) is fixedly connected to a third electric push rod (92); the movable end of the third electric push rod (92) is fixedly connected to a connecting block (93); the outer wall of the rotating cylinder (2) is provided with two rectangular movable through holes (94); the hole wall of the rectangular movable through hole (94) is movably connected to a repair rod (95); the bottom end of the repair rod (95) is fixedly sleeved with a connecting shaft (96); the outer wall of the connecting block (93) is provided with a slot, and the slot wall of the slot is provided with two slots that are connected to the side ends of the connecting shaft (96). The repair rod (95) is hingedly connected to a positioning rod (97) on the rod wall, and an adjusting block (98) is hingedly connected to the bottom end of the positioning rod (97). The outer wall of the rotating cylinder (2) is provided with an adjusting groove (99) that matches the adjusting block (98). The adjusting block (98) is fixedly connected to the groove wall of the adjusting groove (99) by means of screws. The inner wall of the side end of the rotating cylinder (2) is fixedly connected to an infrared distance measuring sensor (910). The outer wall of the rotating cylinder (2) is fixedly sleeved with a heat insulation cover (911). The outer wall of the heat insulation cover (911) is provided with a groove, and the groove wall of the groove is fixedly sleeved with a heating coil (912).

7. A steel pipe inner wall grinding device according to claim 6, characterized in that: The outer walls of the fixing ring (91) and the connecting block (93) are both provided with a plurality of wire harness through holes (15) for the wire harness to pass through, and a conductive slip ring (16) is fixedly embedded on a side of the rotating cylinder (2) close to the extension tube (61).

8. A steel pipe inner wall grinding device according to claim 1, characterized in that: The outer walls of the rotating cylinder (2) and the fixed cover (63) are both fixedly connected to a plurality of telescopic rods (17), the side ends of the telescopic rods (17) are fixedly connected to positioning wheels (18), the outer walls of the telescopic rods (17) are sleeved with positioning springs (19), and the two ends of the positioning springs (19) are respectively fixedly connected to the outer walls of the fixed ends of the telescopic rods (17) and the outer walls of the positioning wheels (18).

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