Polishing device for anticorrosion adhesive tape layer of petrochemical pipeline

Abstract

The invention belongs to the technical field of petrochemical pipeline anti-corrosion adhesive tape layer polishing, and discloses a petrochemical pipeline anti-corrosion adhesive tape layer polishing device which is characterized in that a polishing disc is fixedly arranged on a shaft sleeve of a main shaft and close to the left side, and a rotary driving device is fixedly arranged on the right side of the main shaft; the lifting grinding device is fixedly arranged at the front side of the bottom of the grinding disc. The dust removal pipe frame is fixedly arranged on the rear side of the upper portion of the grinding disc. The corrugated pipe through hole is formed in the bottom of the left side surface of the bracket close to the front side; the limiting mechanism is fixedly arranged at the position, close to the front side, of the upper portion of the corrugated pipe through hole and used for sensing the rotating angle of the grinding disc and transmitting a sensed position signal to the control system. The control system is fixedly arranged on the front side face of the support. The device has the beneficial effects that concentric rotating grinding of the anti-corrosion adhesive tape layer on the end face of the stone pipeline is achieved automatically, and the grinding uniformity of the anti-corrosion adhesive tape layer on the end face of the stone pipeline is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of grinding of anti-corrosion tape layers for petrochemical pipelines, and particularly relates to a grinding device for anti-corrosion tape layers of petrochemical pipelines. Background Art

[0002] Anti-corrosion tapes are mainly used for anti-corrosion protection of metal pipelines. Especially in industries such as petroleum, natural gas, and chemical engineering, due to the long-term erosion of pipeline by corrosive media, it is easy to cause leakage and damage, and even lead to safety accidents. The anti-corrosion tape can closely adhere to the metal surface, forming a solid protective layer to effectively isolate the corrosive media, thereby extending the service life of the pipeline. Wrapping anti-corrosion tape on petrochemical pipelines is an essential process in the pipeline processing. First, the surface of the petrochemical pipeline needs to be derusted, and then an epoxy paint is sprayed on the surface of the petrochemical pipeline. The anti-corrosion tape of the petrochemical pipeline is automatically wound through an anti-corrosion tape winding machine. Finally, the end anti-corrosion tape layer wound on the surface of the petrochemical pipeline needs to be processed to leave a butt welding end to facilitate the butt welding of the petrochemical pipeline.

[0003] In the prior art, for petrochemical pipelines with anti-corrosion tape wound and processed, the anti-corrosion tape layers at both ends of the petrochemical pipeline are cut off by a cutting method (circular cutting). The main technical problems existing in the above processing method for the end anti-corrosion tape layer of the petrochemical pipeline are: the surface of the anti-corrosion tape on the surface of the petrochemical pipeline is very hard after curing, and the cutting is difficult; and after the end anti-corrosion tape of the petrochemical pipeline is cut, it is easy for the cutting end face of the anti-corrosion tape to bulge (flange) and separate from the surface of the petrochemical pipeline. Based on the above defects in the prior art, the inventor has developed a grinding device for anti-corrosion tape layers of petrochemical pipelines, which can well solve the above technical problems existing in the prior art. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides a grinding device for anti-corrosion tape layers of petrochemical pipelines, which has a simple structure and is scientifically and reasonably designed, and can form a 45° grinding bevel for the anti-corrosion tape at the end of the petrochemical pipeline; the present invention solves the technical problems that the anti-corrosion tape on the surface of the petrochemical pipeline is difficult to cut after curing and the cutting end face of the anti-corrosion tape is easy to flange.

[0005] The technical solution adopted by the present invention is as follows: A grinding device for an anti-corrosion tape layer of a petrochemical pipeline, including a pipe rack, a pipe support body, and a bracket. The pipe rack is fixedly arranged at the corresponding central position on the left side of the bracket. The pipe rack is rectangular in shape. The pipe support body is horizontally symmetrically fixedly arranged on the upper part of the pipe rack. The bracket is fixedly arranged at the right side position of the pipe rack. The bracket is in a T shape with a larger size at the lower part and a smaller size at the upper part. The grinding disc is fixedly arranged on the bushing of the main shaft near the left side. The rotating tensioning fixing disc is fixedly arranged at the left end of the main shaft. The fixed cylinder is fixedly arranged on the right end face of the rotating tensioning fixing disc. The strengthening fastening mechanism is fixedly arranged on the right side of the fixed cylinder. The right end of the strengthening fastening mechanism is fixedly connected to the connecting disc. The connecting disc is fixedly connected to the left end of the main shaft. The bushing is fixedly sleeved on the outer wall of the main shaft. The bushing fixedly passes through the central part of the upper part of the bracket and extends at the left and right ends of the bracket. The main shaft hole is penetrated and opened in the center of the main shaft. The rotating driving device is fixedly arranged at the right side position of the main shaft. The rotating driving device is used to rotate and drive the grinding disc and the rotating tensioning fixing disc. The lifting and grinding device is fixedly arranged at the position in front of the bottom of the grinding disc. The dust removal pipe rack is fixedly arranged at the position at the rear side of the upper part of the grinding disc. The corrugated pipe through hole is opened at the position near the front side at the bottom of the left side surface of the bracket. The limiting mechanism is fixedly arranged at the position near the front side of the upper part of the corrugated pipe through hole. The limiting mechanism is used to sense the rotation angle of the grinding disc and transmit the sensed position signal to the control system. The control system is fixedly arranged on the front side surface of the bracket. The control system is used to set and input the motor current change threshold of the rotating driving device, automatically control the rotation and tensioning of the rotating tensioning fixing disc, and automatically control the start and stop of the grinding disc.

[0006] The height of the pipe support body is lower than the position of the rotating tensioning fixing disc. A V-shaped opening for centering and placing the petrochemical pipeline is opened on the upper part of the pipe support body.

[0007] The grinding disc includes a grinding disc body. The grinding disc body is circular in shape. A mounting hole one is opened in the center of the grinding disc body. The mounting hole one of the grinding disc body is mounted at the position near the left end on the bushing. The grinding disc, the strengthening fastening mechanism, the connecting disc, the driven gear disc, and the large slewing bearing are axially concentrically arranged.

[0008] The length of the bushing is less than the length of the main shaft. The main shaft extends out of the left and right ends of the bushing.

[0009] The strengthening fastening mechanism includes a disc one. Mounting holes two are opened in the centers of the disc one and the disc two. The left side surface of the disc one is fixed to the right side surface of the fixed cylinder. The disc two is arranged on the right side of the disc one. There is a spacing between the disc one and the disc two. The screw rods uniformly pass through the circumferential edges of the disc one and the disc two and extend on both sides of the disc one and the disc two. Nuts are meshingly installed at the left ends of the screw rods. Nuts are meshingly installed on the screw rods between the disc one and the disc two. The extending ends of the screw rods uniformly passing through the right side circumference of the disc two are fixed to the left side surface of the connecting disc. The disc one, the disc two, the fixed cylinder, and the connecting disc are concentrically arranged.

[0010] The connecting disc includes a connecting disc body, the connecting disc body is disc-shaped, and a through hole is provided at the center of the connecting disc body.

[0011] The rotary driving device includes a driven gear disc. The driven gear disc is fixedly arranged on the right side of the grinding disc and is mounted on the bushing. The inner ring of the large slewing bearing is mounted on the bushing, and the outer ring of the large slewing bearing is fixedly connected to the middle side surface of the upper part of the left side of the bracket. The motor bracket is fixedly arranged on the right end surface of the main shaft, and the stepping motor is mounted on the right end of the motor bracket. The driving rotary shaft passes through the motor bracket, the main shaft hole, the connecting disc, the strengthening fastening mechanism, the fixed cylinder and is fixedly connected to the center of the right end of the rotary tensioning fixing disc. The right end of the driving rotary shaft is fixedly connected to the power output shaft of the stepping motor. The main driving motor is fixedly mounted on the upper part of the speed reducer. The speed reducer is fixedly arranged at the rear side position of the bottom right end of the bracket. The main driving shaft is arranged at the bottom of the speed reducer. The main driving shaft passes through the bracket body and extends to the left side of the bracket. The outer ring of the small slewing bearing is fixedly mounted on the left side surface of the bracket corresponding to the main driving shaft, and the main driving shaft is mounted on the inner ring of the small slewing bearing. The driving gear is fixedly mounted on the left end of the main driving shaft. The driving gear and the driven gear disc are arranged in a front-back correspondence and are meshed with each other for transmission.

[0012] The driven gear disc includes a driven gear disc body. An installation hole three is provided at the center of the driven gear disc body. The driven gear disc body is mounted on the bushing through the installation hole three.

[0013] The motor bracket includes support columns. The support columns are arranged in a cross-symmetrical manner. The left end of the support column is fixed on the right end of the main shaft, and the support disc is fixedly arranged at the right end of the support column. The stepping motor is mounted on the right end of the support disc.

[0014] The driving rotary shaft of the stepping motor passes through the center of the support column, the main shaft hole, the through hole of the connecting disc, the installation hole two of disc one and disc two, the center of the fixed cylinder from right to left and is fixedly connected to the rotary shaft of the rotary tensioning fixing disc.

[0015] The lifting and grinding device includes a bottom plate, which is arranged parallel to the flipping plate up and down. The right end of the bottom plate is fixed to the left side surface of the grinding disc. A cylinder mounting hole is provided at the center of the bottom plate. The cylinder is fixedly installed at the bottom of the bottom plate, and the telescopic rod of the cylinder passes through the center of the cylinder mounting hole and extends upward and downward. The top seat is fixedly arranged at the center of the bottom of the flipping plate, and the upper end of the telescopic rod of the cylinder is fixedly connected to the bottom of the top seat. Fixed blocks are symmetrically and fixedly arranged at both ends on the right side of the flipping plate. A flipping bearing is installed at the center of the fixed block. The right end face of the fixed block is fixed to the left side surface of the grinding disc. The flipping shaft is horizontally installed in the inner ring of the flipping bearings of the symmetrically arranged fixed blocks. The grinding motor is fixedly arranged at the middle position near the rear side of the upper part of the flipping plate. The shaft seat is fixedly arranged at the middle position of the rear side of the upper part of the flipping plate. The coupling is fixedly arranged at the rear end of the grinding motor. The front end of the grinding shaft passes through the shaft seat and is fixedly connected to the rear end of the coupling. A wire wheel is fixedly installed at the rear end of the grinding shaft. The dust collection box is arranged at the rear side of the bottom plate and the flipping plate. Strip-shaped plates are symmetrically arranged on the front and rear sides of the right side surface of the dust collection box. The right end face of the strip-shaped plate is fixed to the left side surface of the grinding disc. The dust collection box is in the shape of a bucket with an open upper part and a closed lower part. The dust collection pipe is fixedly arranged at the bottom position of the dust collection box, and the dust collection pipe is communicated with the inside of the dust collection box.

[0016] The dust removal pipe rack includes a fixed column, which is fixed at the rear side position above the grinding disc. The rotating cylinder is installed at the left end of the fixed column, and retaining discs are fixedly installed at the left and right ends of the rotating cylinder.

[0017] The left end of the dust collection pipe is fixedly connected to the corrugated pipe, and the other end of the corrugated pipe is wound around the rotating cylinder for several turns and then passes through the corrugated pipe through hole and is fixedly communicated with the dust collector.

[0018] The limiting mechanism includes an induction frame, which is L-shaped. The laser sensor is horizontally installed on the rear end face of the induction frame. The induction piece is Z-shaped. The left end of the induction piece is fixedly connected to the front side near the lower part of the right side surface of the driven gear disc, and the right end of the induction piece extends to the front of the front induction head of the laser sensor.

[0019] The control system includes a control box, which is fixedly arranged at the lower position near the front side of the bracket. The display screen is fixedly arranged on the upper front side of the control box. The current induction module is fixedly arranged at the lower left position of the display screen. The PLC control module is arranged on the right side corresponding to the display screen. The emergency stop button, start button, and stop button are equidistantly arranged in sequence from left to right below the current induction module and the PLC control module.

[0020] The laser sensor is connected to the PLC control module through a signal transmission line; the emergency stop key, start key, and shutdown key are respectively connected to the display screen and the PLC control module through wires; a detection circuit for detecting the current change of the stepping motor is provided inside the current induction module, and the current induction module is fixedly connected to the stepping motor through a signal line; the main drive motor is fixedly connected to the PLC control module through a signal line.

[0021] The electromagnetic air valve of the cylinder is fixedly connected to the PLC control module and the display screen through a signal transmission line, and the grinding motor is fixedly connected to the PLC control module and the display screen through a signal transmission line.

[0022] The working process of this grinding device for the anti-corrosion tape layer of petrochemical pipelines is as follows: First, hoist and clamp the petrochemical pipeline: First, press the power-on key of the control system to make the display screen, current induction module, and PLC control module in the control box in the working state; then use the overhead crane to hoist the petrochemical pipeline wrapped with anti-corrosion tape, and insert one end of the petrochemical pipeline close to the grinding disc into the rotating tightening and fixing disc, and make the rotating tightening and fixing disc concentric with the petrochemical pipeline; at this time, the operator presses the stepping motor power-on key on the display screen of the control system, the rotation of the stepping motor drives the driving rotating shaft to rotate, and the rotation of the driving rotating shaft further drives the rotating shaft of the rotating tightening and fixing disc to rotate. Under the rotation of the rotating shaft, the cross-symmetric tightening bodies are synchronously pushed out radially in the square direction of the rotating tightening and fixing disc (for the specific synchronous tightening and fixing action of the rotating tightening and fixing disc, refer to the content disclosed in the patent number 2025202732703). When the tightening body is pushed out and abuts against the inner wall of the petrochemical pipeline, the rotational load of the stepping motor is at a relatively large value. At this time, the current detection circuit of the current induction module of the control system detects an increase in the current of the stepping motor. When the set maximum current threshold is reached, the current induction module sends a current value signal to the PLC control module, and the PLC control module simultaneously sends a control instruction to the stepping motor to stop rotating, and the stepping motor stops rotating; at this time, the rotating tightening and fixing disc fixes the inner wall of the petrochemical pipeline, and at the same time, the overhead crane places the petrochemical pipeline on the V-shaped opening of the pipe support body symmetrically on the pipe rack; II. Grinding of the anti-corrosion tape layer of the petrochemical pipeline: After the above-mentioned petrochemical pipeline is clamped and fixed, the operator first clicks the start button of the air cylinder on the display screen of the control system. The telescopic rod of the air cylinder extends, and the extension action of the air cylinder jacks up the turning plate through the top seat (at this time, the turning plate rotates and cooperates with the turning bearing through the turning shaft), realizing the upward turning action of the turning plate. The upward turning of the turning plate moves the grinding motor, coupling, shaft seat, grinding shaft and wire wheel upward. When the wire wheel tightly contacts the anti-corrosion tape layer at the end of the petrochemical pipeline, the operator clicks the stop button of the air cylinder on the display screen (the telescopic rod of the air cylinder stops moving). At the same time, the operator clicks the start button of the grinding motor on the display screen, and the grinding motor starts to run and drives the wire wheel on the grinding shaft to rotate at high speed. At the same time, the operator clicks the start button of the main drive motor of the rotary drive device on the display screen. The main drive motor starts to rotate. The power output of the main drive motor is transmitted to the reducer, and the rotation torque of the main drive shaft is increased through the multi-stage speed change of the reducer. The large-torque rotation of the main drive shaft drives the drive gear to rotate through the small slewing bearing, and drives the driven gear disc and the grinding disc to rotate through the meshing transmission of the drive gear and the driven gear disc. Under the rotation action of the grinding disc, the lifting and grinding device is driven to rotate synchronously (at this time, the wire wheel rotates and grinds while synchronously rotating and grinding around the anti-corrosion tape layer at the end of the petrochemical pipeline). When the induction piece on the right side of the driven gear disc rotates to the position of the laser sensor, the laser sensor transmits the sensed position signal to the PLC control module. The PLC control module sends control instructions to stop the rotation of the main drive motor and the grinding motor at the same time. At this time, the grinding disc rotates 360 degrees, thus completing the bevel grinding of the anti-corrosion tape layer at the end of the petrochemical pipeline.

[0023] The beneficial effects of the present invention are as follows: Through the settings of the pipe rack, support, grinding disc, rotary tightening and fixing disc, drive device, lifting and grinding device, dust removal pipe rack, limiting mechanism and control system, and with the linkage cooperation of the above-mentioned equipment components, the concentric rotary grinding of the anti-corrosion tape layer on the end face of the stone pipeline is realized automatically, improving the uniformity of the grinding of the anti-corrosion tape layer on the end face of the stone pipeline, and forming a process anti-corrosion tape layer bevel that meets the butt welding of the petrochemical pipeline, completely eliminating the warping of the anti-corrosion tape layer at the end face of the petrochemical pipeline caused by cutting; facilitating the butt welding of the petrochemical pipeline, being conducive to the repair of the anti-corrosion tape after the butt welding of the petrochemical pipeline, and forming a uniform anti-corrosion tape layer after the butt welding of the petrochemical pipeline. Brief Description of the Drawings

[0024] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a rear view structural schematic diagram of the support of the present invention; Figure 3 It is an enlarged structural view of the limiting mechanism of the present invention; Figure 4This is an enlarged structural view of the rotating tightening and fixing disc and the strengthening fastening mechanism of the present invention; Figure 5 This is a schematic structural view of the lifting and grinding device of the present invention; Figure 6 This is a sectional view of the support, grinding disc, fixed cylinder, strengthening fastening mechanism, connecting disc, main shaft, shaft sleeve, driven gear disc, large slewing bearing, motor frame, stepping motor and driving rotating shaft of the present invention; Markings in the figure: 1, pipe support frame; 2, pipe support body; 3, support; 4, grinding disc, 41, grinding disc body, 42, first mounting hole; 5, rotating tightening and fixing disc; 6, fixed cylinder; 7, strengthening fastening mechanism, 71, first disc, 72, second disc, 73, second mounting hole, 74, screw, 75, nut; 8, connecting disc, 81, connecting disc body, 82, through hole; 9, main shaft; 10, shaft sleeve; 11, main shaft hole; 12, rotation driving device, 121, driven gear disc, 1211, driven gear disc body, 1212, third mounting hole, 122, large slewing bearing, 123, motor frame, 1231, support column, 1232, support disc, 124, stepping motor, 125, driving rotating shaft, 126, main driving motor, 127, speed reducer, 128, main driving shaft, 129, small slewing bearing, 1210, driving gear; 13, lifting and grinding device, 131, bottom plate, 132, cylinder mounting hole, 133, cylinder, 134, top seat, 135, turning plate, 136, fixed block, 137, turning bearing, 138, turning shaft, 139, grinding motor, 1310, coupling, 1311, shaft seat, 1312, grinding shaft, 1313, wire wheel, 1314, dust collection box, 1315, strip plate, 1316, dust collection pipe; 14, dust removal pipe support frame, 141, fixed column, 142, rotating cylinder, 143, retaining disc; 15, bellows through hole; 16, limiting mechanism, 161, induction frame, 162, laser sensor, 163, induction piece; 17, control system, 171, control box, 172, display screen, 173, current induction module, 174, PLC control module, 175, emergency stop button, 176, start button, 177, stop button. Detailed implementation manners

[0025] The following further elaborates on the detailed implementation manners of the present invention with reference to the accompanying drawings.

[0026] The present invention provides a grinding device for the anticorrosive tape layer of petrochemical pipelines: As Figure 1 and 6As shown in the figure, the grinding disc 4 is fixedly arranged on the bushing 10 of the main shaft 9 near the left side. The rotating tensioning and fixing disc 5 is fixedly arranged at the left end of the main shaft 9. The fixed cylinder 6 is fixedly arranged on the right end face of the rotating tensioning and fixing disc 5. The grinding disc 4 includes a grinding disc body 41, the grinding disc body 41 is circular, the first mounting hole 42 is opened at the center of the grinding disc body 41, and the first mounting hole 42 of the grinding disc body 41 is mounted at a position near the left end on the bushing 10. The grinding disc 4, the strengthening and fastening mechanism 7, the connecting disc 8, the driven gear disc 12, and the large slewing bearing 13 are axially concentrically arranged. The length of the bushing 10 is less than the length of the main shaft 9, and the main shaft 9 extends out of the left and right ends of the bushing 10.

[0027] Through the above settings of the grinding disc 4 and the first mounting hole 42, the grinding disc 4 can be fixedly installed on the main shaft 9. On the one hand, it provides a fixed installation space for the lifting grinding device 13, enabling the wire wheel 1313 of the lifting grinding device 13 to rotate around the end face of the anti-corrosion tape layer of the petrochemical pipeline while rotating itself. On the other hand, it improves the grinding uniformity of the end face of the anti-corrosion tape layer of the petrochemical pipeline, thereby improving the grooving grinding quality of the anti-corrosion tape layer of the petrochemical pipeline.

[0028] Through the above settings that the grinding disc 4, the strengthening and fastening mechanism 7, the connecting disc 8, the driven gear disc 12, and the large slewing bearing 13 are axially concentrically arranged; the rotating tensioning and fixing disc 5 is always in a concentric state with the petrochemical pipeline, ensuring the concentric rotation of the wire wheel 1313 of the lifting grinding device 13 around the anti-corrosion tape layer on the surface of the petrochemical pipeline, and realizing the uniform grinding of the anti-corrosion tape layer of the petrochemical pipeline.

[0029] Through the above settings that the length of the bushing 10 is less than the length of the main shaft 9 and the main shaft 9 extends out of the left and right ends of the bushing 10, the installation and matching accuracy of the grinding disc 4, the driven gear disc 121 and the bracket 3 is improved, and the radial shaking during the rotation of the grinding disc 4 and the driven gear disc 121 is reduced, thereby improving the rotation accuracy of the grinding disc 4 and the driven gear disc 121, providing a technical guarantee for the uniform grinding of the anti-corrosion tape layer of the petrochemical pipeline.

[0030] As Figure 1 、 6 shown in the figure, the rotating tensioning and fixing disc 5 is fixedly arranged at the left end of the main shaft 9, and the fixed cylinder 6 is fixedly arranged on the right end face of the rotating tensioning and fixing disc 5. Through the above settings of the rotating tensioning and fixing disc 5 (specifically, referring to the content disclosed in the patent number 2025202732703 for the fixing method of the rotating tensioning and fixing disc 5 on the inner wall of the petrochemical pipeline), on the one hand, the fixing of the inner wall of the petrochemical pipeline is realized; on the other hand, the axial concentricity of the petrochemical pipeline and the main shaft 9 is ensured.

[0031] As Figure 1 、 4As shown in Figure 6, the strengthening and fastening mechanism 7 is fixedly arranged on the right side of the fixed cylinder 6, and the right end of the strengthening and fastening mechanism 7 is fixedly connected to the connecting disk 8, and the connecting disk 8 is fixedly connected to the left end of the main shaft 9; the strengthening and fastening mechanism 7 includes a disk 1 71, and a mounting hole 2 73 is opened in the center of the disk 1 71 and the disk 2 72. The left side of the disk 1 71 is fixed to the right side of the fixed cylinder 6, and the disk 2 72 is arranged on the right side of the disk 1 71. A spacing is arranged between the disk 1 71 and the disk 2 72. The screw rod 74 evenly passes through the circumferential edges of the disk 1 71 and the disk 2 72, and extends on both sides of the disk 1 71 and the disk 2 72. The left end of the screw rod 74 is meshed and installed with a nut 75, and the screw rod 74 between the disk 1 71 and the disk 2 72 is meshed and installed with a nut 75. The extended end of the screw rod 74 uniformly passing through the right side of the disk 2 72 in the circumferential direction is fixed to the left side of the connecting disk 8; the disk 1 71, the disk 2 72, the fixed cylinder 6 and the connecting disk 8 are concentrically arranged.

[0032] By strengthening the arrangement of the disk 1 71, the disk 2 72, the screw 74 and the nut 75 of the fastening mechanism 7, the rotational support and fixing disk 5 is strengthened and fastened. On the one hand, the integrity of the rotational support and fixing disk 5 and the petrochemical pipeline is improved. On the other hand, the concentric rotation of the wire wheel 1313 of the lifting and grinding device 13 and the anti-corrosion tape layer of the petrochemical pipeline is achieved.

[0033] like Figure 1 and 6 As shown, the spindle hole 11 is opened through the center of the spindle 9, and the driving rotating shaft 125 of the stepper motor 124 passes through the center of the support column 1231, the spindle hole 11, the through hole 82 of the connecting disk 8, the mounting hole 2 73 of disk 1 71 and disk 2 72, the center of the fixing cylinder 6 and is fixedly connected with the rotating shaft of the rotating support fixing disk 5 from right to left.

[0034] The above-mentioned setting of the main shaft hole 11 provides a rotating space for the driving rotating shaft 125. On the one hand, the driving rotating shaft 125 realizes concentric rotation under the rotation of the stepping motor 124; on the other hand, the rotational power of the driving rotating shaft 125 is transmitted to the rotating shaft of the rotating tightening fixing disk 5, thereby realizing the tightening body of the rotating tightening fixing disk 5, which is rotated and pushed out synchronously, so as to rotate and tighten the inner wall of the petrochemical pipeline.

[0035] like Figure 1 , 2, as shown in Fig. 6, the rotary drive device 12 is fixedly arranged at the right side position of the main shaft 9. The rotary drive device 12 is used to rotate and drive the grinding disc 4 and the rotary tensioning and fixing disc 5. The rotary drive device 12 includes a driven gear disc 121. The driven gear disc 121 is fixedly arranged on the right side of the grinding disc 4. The driven gear disc 121 is mounted on the sleeve 10. The inner ring of the large slewing bearing 122 is mounted on the sleeve 10. The outer ring of the large slewing bearing 122 is fixedly connected to the middle side surface of the upper part of the left side of the bracket 3. The motor bracket 123 is fixedly arranged on the right end surface of the main shaft 9. The stepping motor 124 is mounted on the right end of the motor bracket 123. The driving rotary shaft 125 passes through the motor bracket 123, the main shaft hole 11, the connecting disc 8, the strengthening and fastening mechanism 7, the fixed cylinder 6 and is fixedly connected to the center of the right end of the rotary tensioning and fixing disc 5. The right end of the driving rotary shaft 125 is fixedly connected to the power output shaft of the stepping motor 124. The main driving motor 126 is fixedly mounted on the upper part of the speed reducer 127. The speed reducer 127 is fixedly arranged at the rear side position of the bottom of the right end of the bracket 3. The main driving shaft 128 is arranged at the bottom of the speed reducer 127. The main driving shaft 128 passes through the main body of the bracket 3 and extends to the left side of the bracket 3. The outer ring of the small slewing bearing 129 is fixedly mounted on the left side surface of the bracket 3 corresponding to the main driving shaft 128. The main driving shaft 128 is mounted on the inner ring of the small slewing bearing 129. The driving gear 1210 is fixedly mounted on the left end of the main driving shaft 128. The driving gear 1210 and the driven gear disc 121 are arranged in a front-back corresponding manner and are engaged and driven with each other.

[0036] Through the above settings of the driven gear disc 121, the large slewing bearing 122, the main driving motor 126, the speed reducer 127, the main driving shaft 128, the small slewing bearing 129 and the driving gear 1210, with the main driving motor 126 as the driving power, the rotational torque is increased through the speed reducer 127, and through the rotational cooperation with the inner ring of the small slewing bearing 129 with the main driving shaft 128 as the rotation center, the driving gear 1210 rotates with a large torque. Then, through the meshing drive between the driving gear 1210 and the driven gear disc 121, with the inner ring of the large slewing bearing 122 as the rotation center, the uniform rotation of the driven gear disc 121 and the grinding disc 4 is finally realized. On the one hand, the uniform rotation of the grinding disc 4 is realized, thereby driving the wire wheel 1313 of the lifting and grinding device 13 to rotate uniformly. On the other hand, the driven gear disc 121 realizes a slow and uniform rotation with a large torque reduction.

[0037] Through the above settings of the motor bracket 123, the stepping motor 124 and the driving rotary shaft 125, with the stepping motor 124 as the forward or reverse rotation power, drives the forward or reverse rotation of the driving rotary shaft 125, thereby driving the forward or reverse rotation of the rotary shaft of the rotary tensioning and fixing disc 5, and finally realizing the synchronous rotation and telescopic movement of the four tightening bodies of the rotary tensioning and fixing disc 5 to rotate and tightly fix the inner wall of the petrochemical pipeline.

[0038] AsFigure 1 and 5 As shown in 5 , the lifting and grinding device 13 is fixedly arranged at the front side position at the bottom of the grinding disc 4; the bottom plate 131 and the turning plate 135 are arranged parallel to each other up and down. The right end of the bottom plate 131 is fixed to the left side surface of the grinding disc 4. A cylinder mounting hole 132 is formed at the center of the bottom plate 131. The cylinder 133 is fixedly installed at the bottom of the bottom plate 131. The telescopic rod of the cylinder 133 passes through the center of the cylinder mounting hole 132 and makes a telescopic movement upward. The top seat 134 is fixedly arranged at the center of the bottom of the turning plate 135. The upper end of the telescopic rod of the cylinder 133 is fixedly connected to the bottom of the top seat 134; The fixing blocks 136 are symmetrically and fixedly arranged at both ends on the right side of the turning plate 135. A turning bearing 137 is installed at the center of the fixing block 136. The right end face of the fixing block 136 is fixed to the left side surface of the grinding disc 4. The turning shaft 138 is horizontally installed in the inner ring of the turning bearings 137 of the symmetrically arranged fixing blocks 136.

[0039] The main purpose of the above setting is that under the jacking action with the telescopic rod of the cylinder 133 as the telescopic power, the turning plate 135 can be jacked up to a certain height through the cooperation of the turning shaft 138 and the turning bearing 137, so that the grinding motor 139, the coupling 1310, the shaft seat 1311 and the wire wheel 1313 on the turning plate 135 are jacked up, and thus the wire wheel 1313 is tightly contacted with the anti-corrosion tape layer of the petrochemical pipeline.

[0040] As Figure 1 and 5 As shown in 5 , the grinding motor 139 is fixedly arranged at the position near the rear side in the middle of the upper part of the turning plate 135. The shaft seat 1311 is fixedly arranged at the position in the middle of the rear side of the upper part of the turning plate 135. The coupling 1310 is fixedly arranged at the rear end of the grinding motor 139. The front end of the grinding shaft 1312 passes through the shaft seat 1311 and is fixedly connected to the rear end of the coupling 1310. The wire wheel 1313 is fixedly installed at the rear end of the grinding shaft 1312.

[0041] The main purpose of the above setting is that under the rotation of the grinding motor 139, the rotational power is transmitted to the grinding shaft 1312 through the coupling 1310. The grinding shaft 1312 rotates at a high speed with the inner ring of the bearing of the shaft seat 1311 as the center, and finally the wire wheel 1313 rotates at a high speed, playing the role of rotating and grinding the anti-corrosion tape layer of the petrochemical pipeline with the high-speed rotating wire wheel 1313.

[0042] Under the uniform rotation of the grinding disc 4, the grinding motor 139, the coupling 1310, the shaft seat 1311, the grinding shaft 1312 and the wire wheel 1313 can be driven to rotate and grind around the surface of the anti-corrosion tape layer of the petrochemical pipeline, so as to form an end face groove with uniform thickness of the anti-corrosion tape layer of the petrochemical pipeline.

[0043] As Figure 1 and5 As shown in the figure, the dust collection box 1314 is arranged at the rear side position of the bottom plate 131 and the turning plate 135. Strip plates 1315 are symmetrically arranged on the front and rear sides of the right side surface of the dust collection box 1314. The right end surface of the strip plate 1315 is fixed to the left side surface of the grinding disc 4. The dust collection box 1314 is in the shape of a hopper with an open upper part and a closed lower part. The dust collection pipe 1316 is fixedly arranged at the bottom position of the dust collection box 1314, and the dust collection pipe 1316 is communicated with the inside of the dust collection box 1314.

[0044] The main purpose of the above setting is that when the wire wheel 1313 rotating at high speed grinds the anti-corrosion tape layer of the petrochemical pipeline, debris-like dust will be generated. First, the dust collection box 1314 is used for short-term collection. At the same time, by means of the suction effect of the dust collector induced draft fan, the debris-like dust generated during grinding is timely sucked into the dust collector through the corrugated pipe and the dust collection pipe 1316. On the one hand, the working environment of the operation site can be improved, and on the other hand, the pollution of the debris-like dust to the environment can be reduced.

[0045] As Figure 1 、 2 shown in FIGS. 3, the limit mechanism 16 is fixedly arranged at the upper part near the front side position of the through hole 15 of the corrugated pipe. The limit mechanism 16 is used to sense the rotation angle of the grinding disc 4 and transmit the sensed position signal to the control system 17. The limit mechanism 16 includes an induction frame 161. The induction frame 161 is L-shaped. The laser sensor 162 is horizontally installed on the rear end surface of the induction frame 161. The induction piece 163 is Z-shaped. The left end of the induction piece 163 is fixed to the front side near the lower part of the right side surface of the driven gear disc 121, and the right end of the induction piece 163 extends to the front of the front induction head of the laser sensor 162.

[0046] Through the setting of the induction frame 161, the laser sensor 162, and the induction piece 163, and at the same time under the linkage cooperation of the PLC control module 174, when the wire wheel 1313 rotating with the uniform rotation of the grinding disc 4 rotates 360°, the induction piece 163 just rotates to the position of the laser sensor 162. At this time, the laser sensor 162 senses the position signal of the induction piece 163, and the laser sensor 162 transmits the sensed position signal to the PLC control module 174. After receiving the signal, the PLC control module 174 simultaneously sends a control instruction to stop rotating to the main drive motor 126 and the grinding motor 139 of the rotation drive device 12, and the grinding disc 4 and the wire wheel 1313 stop rotating, thus completing the bevel grinding operation of one end face of the anti-corrosion tape layer of the petrochemical pipeline.

[0047] As Figure 1 and 2As shown in the figure, the control system 17 includes a control box 171 which is fixedly arranged at a position near the lower part of the front side of the bracket 3. The display screen 172 is fixedly arranged on the upper front side of the control box 171. The current induction module 173 is fixedly arranged at the lower left position of the display screen 172. The PLC control module 174 is arranged on the corresponding right side of the display screen 172. The emergency stop key 175, the start key 176, and the shutdown key 177 are arranged at equal intervals from left to right below the current induction module 173 and the PLC control module 174.

[0048] Through the setting of the display screen 172 as described above, the maximum current threshold of the stepping motor 124 can be set, and at the same time, the human-machine interaction control of the stepping motor 124 and the main drive motor 126 of the driving device 12 can be realized. Through the setting of the current induction module 173 as described above, by using the current detection circuit in the current induction module 173, the current change of the stepping motor 124 can be detected in real time, so as to realize the control of the stretching distance limit of the stretching body of the rotating tightening fixing disc 5. Through the setting of the PLC control module 174 as described above, in cooperation with the laser sensor 162, the position signal sensed by the laser sensor 162 is transmitted to the PLC control module 174. After receiving the signal, the PLC control module 174 controls the opening and closing of the main drive motor 126 of the automatic control rotating driving device 12 and the grinding motor 139.

[0049] As Figure 1 、 2 、6 shows, the dust removal pipe rack 14 includes a fixed column 141 which is fixed at the upper rear position of the grinding disc 4. The rotating cylinder 142 is installed at the left end of the fixed column 141. The left and right ends of the rotating cylinder 142 are fixedly installed with retaining discs 143. Through the setting of the fixed column 141, the rotating cylinder 142, and the retaining discs 143 as described above, a larger margin can be set for the corrugated pipe connecting the dust collection pipe 1361, and the corrugated pipe is wound around the rotating cylinder 142. As the grinding disc 4 rotates, the corrugated pipe with the margin wound around the rotating cylinder 142 rotates with the grinding disc 4 to perform the pipe releasing operation, so as to finally realize the extraction and dust collection of the grinding dust while grinding.

[0050] As Figures 1-6As shown, the working process of this grinding device for the anti-corrosion tape layer of petrochemical pipelines is as follows: First, the hoisting and clamping of the petrochemical pipeline: First, press the power-on button 176 of the control system 17 to make the display screen 172, current induction module 173, and PLC control module 174 in the control box 171 in the working state; then use the overhead crane to lift the petrochemical pipeline wrapped with anti-corrosion tape, and insert one end of the petrochemical pipeline close to the grinding disc 4 into the rotating tightening and fixing disc 5, and make the rotating tightening and fixing disc 5 concentric with the petrochemical pipeline; at this time, the operator presses the power-on button of the stepping motor 124 on the display screen 172 of the control system 17, and the rotation of the stepping motor 124 drives the driving rotating shaft 125 to rotate. The rotation of the driving rotating shaft 125 further drives the rotating shaft of the rotating tightening and fixing disc 5 to rotate. Under the rotation of the rotating shaft, the cross-symmetric tightening bodies are synchronously pushed out radially in the square direction of the rotating tightening and fixing disc 5 (for the specific synchronous tightening and fixing action of the rotating tightening and fixing disc 5, refer to the content disclosed in the patent number 2025202732703). When the tightening body is pushed out and abuts against the inner wall of the petrochemical pipeline, the rotational load of the stepping motor 124 is at a relatively large value. At this time, the current detection circuit of the current induction module 173 of the control system 17 detects the increased value of the current of the stepping motor 124. When the set maximum current threshold is reached, the current induction module 173 sends a current value signal to the PLC control module, and the PLC control module 174 simultaneously sends a control instruction to stop the rotation of the stepping motor 124, and the stepping motor 124 stops rotating; at this time, the rotating tightening and fixing disc 5 fixes the inner wall of the petrochemical pipeline, and at the same time, the overhead crane places the petrochemical pipeline on the V-shaped openings of the pipe supports 2 on the pipe rack 1 symmetrically.

[0051] II. Grinding of the anti-corrosion tape layer of the petrochemical pipeline: After the above-mentioned petrochemical pipeline is clamped and fixed, the operator first clicks the start button of the cylinder 133 on the display screen 172 of the control system 17. The telescopic rod of the cylinder 133 extends, and the extension action of the cylinder 133 jacks up the turning plate 135 through the top seat 134 (at this time, the turning plate 135 rotates with the turning bearing 137 through the turning shaft 138) to realize the upward turning action of the turning plate 135. The upward turning of the turning plate 135 moves the grinding motor 139, coupling 1310, shaft seat 1311, grinding shaft 1312 and wire wheel 1313 upward. When the wire wheel 1313 tightly contacts the anti-corrosion tape layer at the end of the petrochemical pipeline, the operator clicks the stop button of the cylinder 133 on the display screen 172 (the telescopic rod of the cylinder 133 stops moving), and at the same time, the operator clicks the start button of the grinding motor 139 on the display screen 172, and the grinding motor 139 starts to operate and drives the wire wheel 1313 on the grinding shaft 1312 to rotate at high speed. At the same time, the operator clicks the start button of the main drive motor 126 of the rotary drive device 12 on the display screen 172. The main drive motor 126 starts to rotate. The power output by the main drive motor 126 is transmitted to the reduction gearbox 127, and the rotation torque of the main drive shaft 128 is increased through the multi-stage speed change of the reduction gearbox 127. The large-torque rotation of the main drive shaft 128 drives the drive gear 1210 to rotate through the small slewing bearing 129, and drives the driven gear disk 121 and the grinding disk 4 to rotate through the meshing transmission between the drive gear 1210 and the driven gear disk 121. Under the rotation action of the grinding disk 4, the lifting and grinding device 13 is driven to rotate synchronously (at this time, the wire wheel 1313 rotates and grinds synchronously around the anti-corrosion tape layer at the end of the petrochemical pipeline). When the induction piece 163 on the right side of the driven gear disk 121 rotates to the position of the laser sensor 162, the laser sensor 162 transmits the sensed position signal to the PLC control module 174. The PLC control module 174 sends control instructions to stop the rotation of the main drive motor 126 and the grinding motor 139 at the same time. At this time, the grinding disk 4 rotates 360 degrees, thus completing the bevel grinding of the anti-corrosion tape layer at the end of the petrochemical pipeline.

[0052] Various modifications to the above embodiments will be apparent to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. A grinding device for the anti-corrosion tape layer of a petrochemical pipeline, comprising a pipe rack, a pipe support body, and a bracket, wherein the pipe rack is fixedly arranged at the center position corresponding to the left side of the bracket, the pipe rack is rectangular in shape, and the pipe support body is laterally symmetrically fixedly arranged at the upper part of the pipe rack; the bracket is fixedly arranged at the right side of the pipe rack, and the bracket is T-shaped with a large lower size and a small upper size; the characteristics are: The grinding disc is fixedly arranged on the shaft sleeve of the main shaft near the left side, the rotating tightening and fixing disc is fixedly arranged on the left end of the main shaft, and the fixing cylinder is fixedly arranged on the right end face of the rotating tightening and fixing disc; the strengthening fastening mechanism is fixedly arranged on the right side of the fixing cylinder, and the right end of the strengthening fastening mechanism is fixedly connected to the connecting disc, and the connecting disc is fixedly connected to the left end of the main shaft; the shaft sleeve is fixedly sleeved on the outer wall of the main shaft, and the shaft sleeve is fixedly passed through the upper center of the bracket and extends to the left and right ends of the bracket; the main shaft hole is opened through the center of the main shaft; the rotating driving device is fixedly arranged on the right side of the main shaft, and the rotating driving device is used to drive the grinding disc and the rotating tightening and fixing disc The lifting and grinding device is fixedly arranged at the front side of the bottom of the grinding disc; the dust removal pipe holder is fixedly arranged at the rear side of the upper part of the grinding disc; the bellows through hole is opened at the bottom of the left side of the bracket near the front side; the limit mechanism is fixedly arranged at the upper part of the bellows through hole near the front side, and the limit mechanism is used to sense the rotation angle of the grinding disc and transmit the sensed position signal to the control system; the control system is fixedly arranged on the front side of the bracket, and the control system is used to set the motor current change threshold of the input rotation drive device, automatically control the rotation and tightening of the rotating tightening and fixing disc, and automatically control the start and stop of the grinding disc.

2. The grinding device for the anti-corrosion tape layer of a petrochemical pipeline according to claim 1 is characterized by: The grinding disc comprises a grinding disc body, which is circular in shape, a mounting hole 1 is provided at the center of the grinding disc body, and a mounting hole 1 of the grinding disc body is installed on the shaft sleeve near the left end; the grinding disc, the strengthening fastening mechanism, the connecting disc, the driven gear disc, and the large slewing bearing are axially concentrically arranged.

3. The grinding device for the anti-corrosion tape layer of a petrochemical pipeline according to claim 1 is characterized by: The reinforcing and fastening mechanism includes disk one, and a mounting hole two is provided in the center of disk one and disk two. The left side of disk one is fixed to the right side of the fixing tube, and disk two is arranged on the right side of disk one. A spacing is arranged between disk one and disk two, and a screw rod evenly passes through the circumferential edges of disk one and disk two, and extends on both sides of disk one and disk two. A nut is meshed and installed on the left end of the screw rod, and a nut is meshed and installed on the screw rod between disk one and disk two. The extended end of the screw rod evenly passing through the circumference of the right side of disk two is fixed to the left side of the connecting disk; disk one, disk two, the fixing tube and the connecting disk are concentrically arranged.

4. The grinding device for the anti-corrosion tape layer of a petrochemical pipeline according to claim 1 is characterized by: The rotary drive device includes a driven gear disc, which is fixedly arranged on the right side of the grinding disc and is installed on the shaft sleeve; the inner ring of the large slewing bearing is installed on the shaft sleeve, and the outer ring of the large slewing bearing is fixed to the middle side of the upper left part of the bracket; the motor frame is fixedly arranged on the right end face of the main shaft, and the stepper motor is installed on the right end of the motor frame; the driving rotating shaft passes through the motor frame, the main shaft hole, the connecting disc, the strengthening fastening mechanism, the fixing cylinder and is fixed to the right end center of the rotating tightening fixing disc, and the right end of the driving rotating shaft is fixed to the power output shaft of the stepper motor; the main driving motor is fixedly arranged on the upper part of the reducer, the reducer is fixedly arranged at the rear side of the bottom of the right end of the bracket, the main driving shaft is arranged at the bottom of the reducer, the main driving shaft passes through the bracket body and extends to the left side of the bracket, the outer ring of the small slewing bearing is fixedly arranged on the left side face of the bracket corresponding to the main driving shaft, and the main driving shaft is installed on the inner ring of the small slewing bearing; the driving gear is fixedly arranged on the left end portion of the main driving shaft, and the driving gear and the driven gear disc are arranged front and back correspondingly, and are meshed and transmitted with each other.

5. The grinding device for the anti-corrosion tape layer of a petrochemical pipeline according to claim 4 is characterized in that: The driven gear disc comprises a driven gear disc body, a mounting hole three is opened at the center of the driven gear disc body, and the driven gear disc body is mounted on the shaft sleeve through the mounting hole three.

6. The grinding device for the anti-corrosion tape layer of a petrochemical pipeline according to claim 4 is characterized by: The motor frame includes a support column, which is arranged in a cross-symmetrical manner, the left end of the support column is fixed on the right end of the main shaft, and the support plate is fixed on the right end of the support column; the stepper motor is installed on the right end of the support plate; the dust removal pipe frame includes a fixed column, the fixed column is fixed on the upper rear side of the grinding plate, the rotating cylinder is installed on the left end of the fixed column, and baffles are fixedly installed on the left and right ends of the rotating cylinder.

7. The grinding device for the anti-corrosion tape layer of a petrochemical pipeline according to claim 6 is characterized by: The driving rotating shaft of the stepper motor passes through the center of the support column, the main shaft hole, the through hole of the connecting disk, the mounting hole 2 of disk one and disk two, the center of the fixing cylinder and is fixedly connected to the rotating shaft of the rotating and tightening fixing disk from right to left.

8. The grinding device for the anti-corrosion tape layer of a petrochemical pipeline according to claim 1 is characterized by: The lifting and grinding device comprises a bottom plate, which is arranged parallel to the flip plate in the upper and lower parts, the right end of the bottom plate is fixed to the left side of the grinding disc, a cylinder mounting hole is opened in the center of the bottom plate, the cylinder is fixedly mounted on the bottom of the bottom plate, the telescopic rod of the cylinder passes through the center of the cylinder mounting hole and telescopes upward, the top seat is fixedly arranged at the bottom center of the flip plate, and the upper end of the telescopic rod of the cylinder is fixedly connected to the bottom of the top seat; the fixed blocks are symmetrically fixedly arranged at the two ends of the right side of the flip plate, a flip bearing is installed in the center of the fixed block, the right end face of the fixed block is fixed to the left side of the grinding disc, and the flip axis is transversely mounted in the inner ring of the flip bearing of the symmetrically arranged fixed block; The grinding motor is fixedly arranged in the middle of the upper part of the flip plate near the rear side, the shaft seat is fixedly arranged in the middle of the upper rear side of the flip plate, the coupling is fixedly arranged at the rear end of the grinding motor, the front end of the grinding shaft passes through the shaft seat and is fixed to the rear end of the coupling, and a wire wheel is fixedly installed at the rear end of the grinding shaft; the dust collecting box is arranged at the rear side of the bottom plate and the flip plate, and the right side surface of the dust collecting box is symmetrically provided with strip plates, and the right end face of the strip plates is fixed to the left side face of the grinding disc, the dust collecting box is in the shape of a bucket with an opening at the top and a closing at the bottom, the dust collecting pipe is fixedly arranged at the bottom position of the dust collecting box, and the dust collecting pipe is connected with the inside of the dust collecting box.

9. The grinding device for the anti-corrosion tape layer of a petrochemical pipeline according to claim 1, characterized in that: The limiting mechanism includes a sensing frame, which is L-shaped. The laser sensor is horizontally installed on the rear end surface of the sensing frame. The sensing plate is Z-shaped. The left end of the sensing plate is fixed to the front side of the right side of the driven gear plate near the lower part, and the right end of the sensing plate extends to the front end of the sensing head on the front side of the laser sensor.

10. The grinding device for the anti-corrosion tape layer of a petrochemical pipeline according to claim 1, characterized in that: The control system includes a control box, which is fixedly arranged on the front side of the bracket near the lower position, the display screen is fixedly arranged on the upper front side of the control box, the current sensing module is fixedly arranged on the lower left position of the display screen, and the PLC control module is arranged on the right side corresponding to the display screen; the emergency stop button, the start button, and the close button are equidistantly arranged from left to right at the bottom of the current sensing module and the PLC control module; the laser sensor is connected to the PLC control module through a signal transmission line; the emergency stop button, the start button, and the close button are respectively connected to the display screen and the PLC control module through wires; a detection circuit for detecting the current change of the stepper motor is arranged inside the current sensing module, and the current sensing module is fixedly connected to the stepper motor through a signal line; the main drive motor is fixedly connected to the PLC control module through a signal line; the solenoid valve of the cylinder is fixedly connected to the PLC control module and the display screen through a signal transmission line, and the grinding motor is fixedly connected to the PLC control module and the display screen through a signal transmission line.

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