An obstacle-surmounting oil pipeline polishing and paint removing device

Abstract

The application relates to an obstacle-crossing oil pipeline polishing and paint-removing device which comprises a pressure applying mechanism, arc-shaped pressing members, mounting racks, a transmission mechanism, a walking mechanism and a polishing mechanism. The mounting racks comprise upper mounting racks and lower mounting racks. The lower mounting racks are correspondingly fixedly connected below the middle parts of the upper mounting racks. Left and right sides of the rear end faces of the upper mounting racks are symmetrically fixedly connected with connecting racks. The pressure applying mechanism is arranged in the middle part of the upper mounting rack. The arc-shaped pressing members are correspondingly and slidably connected at the two ends of the lower mounting rack and are correspondingly connected with the pressure applying mechanism. The transmission mechanism is fixedly connected between the bottoms of the two connecting racks and is coaxially arranged with the pipeline. The walking mechanism is arranged between the two arc-shaped pressing members and the pipeline and is slidably connected with the arc-shaped pressing members. The polishing mechanism is circumferentially arranged between the transmission mechanism and the pipeline and is slidably connected with the transmission mechanism. The device has good obstacle-crossing capability and is not prone to overturning. The device is easy to disassemble, install and maintain and can realize complete circumferential polishing.

Description

Technical Field

[0001] This invention relates to the field of paint removal and polishing technology for oil pipelines, and in particular to an oil pipeline polishing and paint removal device capable of overcoming obstacles. Background Technology

[0002] Pipeline transportation is currently a crucial mode of transporting oil and natural gas resources. However, most oil transport traverses rugged and complex environments, making pipelines prone to cracks and leaks. To inspect pipelines for these issues, regular paint removal and polishing are necessary. Current pipeline external wall polishing mechanisms cannot bypass pipe joints, limiting their ability to polish oil pipelines with large spans and numerous joints. Therefore, given the current state of oil pipeline paint removal and polishing, there is an urgent need for a new type of paint removal and polishing equipment capable of automatically removing paint and polishing pipelines over obstacles. Summary of the Invention

[0003] To address the aforementioned problems, the present invention aims to provide an obstacle-crossing oil pipeline grinding and paint removal device, which mainly uses a motor-driven grinding mechanism to grind the outer wall of the pipeline; a rubber tracked vehicle travels on the outer wall of the pipeline, and the rubber tracked vehicle applies positive pressure through mechanical claws to provide sufficient friction to travel on the pipeline wall; the grinding disc is retracted by a motor-driven mechanism, thereby enabling it to cross pipeline joints.

[0004] The technical solution adopted in this invention is as follows:

[0005] The present invention discloses an obstacle-crossing oil pipeline grinding and paint removal device, comprising a pressure applying mechanism, arc-shaped clamping components, a mounting frame, a transmission mechanism, a traveling mechanism, and a grinding mechanism. The mounting frame includes an upper mounting frame and a lower mounting frame, both of which are arc-shaped structures. The lower mounting frame is fixedly connected to the lower center of the upper mounting frame. Connecting frames are symmetrically fixed to the left and right sides of the rear end face of the upper mounting frame. The pressure applying mechanism is located in the middle of the upper mounting frame. The arc-shaped clamping components are slidably connected to both ends of the lower mounting frame and correspond to the pressure applying mechanism. The transmission mechanism is fixed between the bottoms of the two connecting frames and arranged coaxially with the pipeline. The traveling mechanism is located between the two arc-shaped clamping components and the pipeline, and is slidably connected to the arc-shaped clamping components. The grinding mechanism is circumferentially distributed between the transmission mechanism and the pipeline, and is slidably connected to the transmission mechanism.

[0006] Furthermore, the pressure applying mechanism includes a first motor, a left mechanical claw, a right mechanical claw, and a mounting shaft; the first motor is located on one side of the middle of the rear end face of the upper mounting bracket; the left and right mechanical claws are symmetrically arranged on both sides of the middle of the front end face of the upper mounting bracket, and their inner ends mesh with each other; the inner side of the left mechanical claw is engaged with the mounting shaft hole, and the mounting shaft is fixedly connected to the upper mounting bracket; the inner side of the right mechanical claw is keyed to the rotating shaft of the first motor.

[0007] Furthermore, the two arc-shaped clamping parts correspond to the ends of the left and right mechanical claws, respectively, and the arc-shaped clamping parts are slidably connected to the ends of the lower mounting bracket via a second circumferential track; the end face of the arc-shaped clamping parts is evenly distributed with screw holes in the circumferential direction, and a circumferential groove is opened below the screw holes.

[0008] Furthermore, the walking mechanism includes a rubber track vehicle, a connecting rod, and a slider; the bottom end of the connecting rod is vertically fixed to the middle of the upper end face of the rubber track vehicle; the slider is correspondingly disposed at the upper end of the connecting rod; the slider has a screw hole on its side; the slider is slidably connected to the groove on the end face of the arc-shaped clamping component, and the screw hole on the side of the slider and the corresponding screw hole on the end face of the arc-shaped clamping component are fixed together by screws.

[0009] Furthermore, the slider is composed of a left slider and a right slider; both the left slider and the right slider are L-shaped structures; wherein, the bottom end of the left slider is provided with a threaded rod, and the upper end of the connecting rod and the bottom end of the right slider are provided with corresponding threaded holes; the threaded rod at the bottom of the left slider passes through the upper end of the connecting rod and the bottom edge of the right slider in sequence, and is threadedly connected to the connecting rod and the bottom edge of the right slider respectively; the middle area of ​​the side of the left slider and the right slider are respectively provided with threaded holes.

[0010] Furthermore, the transmission mechanism includes an upper internal gear, a lower internal gear, a split guide rail, and bolted connectors; both the upper and lower internal gears are semi-circular structures; the upper and lower internal gears are connected to form a circular gear ring, and their two ends are fixedly connected by bolted connectors; the rear end faces of both the upper and lower internal gears are provided with circumferential grooves, and the split guide rails are slidably connected in the grooves respectively; the left and right sides of the outer circumferential end face of the upper internal gear are fixedly connected to the ends of the connectors respectively.

[0011] Furthermore, the grinding mechanism includes a large spur gear, a second motor, a fixed baffle, a spring, a sliding baffle, a third motor, a first track, a housing, a grinding disc, a rack, a fourth motor, and a small spur gear; the fixed baffle is disposed in the upper region inside the housing; the first track is longitudinally disposed on both sides of one end of the bottom surface inside the housing; the movable baffle is slidably connected to the first track on both sides; the spring is connected between the four corner regions of the fixed baffle and the sliding baffle; the large spur gear is disposed above the fixed baffle and is keyed to the shaft of the second motor; The second motor is fixedly connected to the housing; the third motor is fixedly connected to the bottom of the movable baffle, and its rotating shaft passes downward through the housing and is coaxially fixedly connected to the grinding disc; the fourth motor is fixedly connected to the bottom of the movable baffle; the small spur gear is coaxially keyed to the rotating shaft of the fourth motor; the rack is longitudinally fixed to the lower middle area of ​​the inner wall of the housing and does not interfere with the movable baffle; the small spur gear meshes with the rack; the top of the housing is fixedly connected to the split guide rail in the slide groove of the rear end face of the upper internal gear or the lower internal gear; the large spur gear meshes with the rack on the inner circumference of the upper internal gear or the lower internal gear.

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] 1. The grinding part of the present invention can convert the power provided by the motor into the meshing circumferential transmission of the grinding mechanism and the internal gear and the high-speed rotation grinding of the grinding disc. It can also achieve complete circumferential grinding of the pipe more accurately by adjusting the motor speed, and realize automatic control.

[0014] 2. The automatic control part of the present invention can control the output torque of the first motor to adjust the positive pressure on the rubber track vehicle, so that the rubber track vehicle can move radially, control the meshing transmission of the small spur gear and rack connected to the fourth motor, shrink the grinding disc, and realize the crossing of the pipe joint.

[0015] 3. The clamping device of the present invention can adjust the circumferential position of the rubber track vehicle by sliding the slider in the groove, and select a safer and more reliable circumferential position to travel on the outer wall of the pipe.

[0016] 4. The external design of this invention is all ring-shaped, and because the rubber tracked vehicle has a suspension system, it is not easy to overturn. It can also effectively reduce the space occupied by the rust removal and grinding mechanism, and can also be used when the pipes are close to each other.

[0017] 5. The grinding mechanism of this invention has four springs between the sliding baffle and the fixed baffle, which gives the grinding disc a certain clamping force on the outer wall of the pipe.

[0018] 6. All parts of this invention are easy to install and disassemble, and convenient to use. Attached Figure Description

[0019] Figure 1This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 for Figure 1 A schematic diagram of the rear structure;

[0021] Figure 3 This is a cross-sectional view of the grinding mechanism;

[0022] Figure 4 This is a structural diagram of the mounting bracket;

[0023] Figure 5 A schematic diagram of the connection structure between the arc-shaped clamping component and the lower mounting bracket;

[0024] Figure 6 This is a schematic diagram of the walking mechanism;

[0025] Figure 7 for Figure 6 A schematic diagram of the connection structure between the middle slider and the arc-shaped clamping component.

[0026] In the attached drawings, the following reference numerals are used: 1-Right mechanical claw; 2-Left mechanical claw; 3-Lower mounting bracket; 4-Upper mounting bracket; 5-Slider; 6-Upper internal gear; 7-Clamping device; 8-Lower internal gear; 9-Pipe; 10-Rubber track vehicle; 11-Connecting rod; 12-First motor; 13-Bolt connector; 14-Split guide rail; 15-Grinding mechanism; 16-Large spur gear; 17-Second motor; 18-Fixed baffle; 19-Spring; 20-Sliding baffle; 21-Third motor; 22-First track; 23-Outer shell; 24-Grinding disc; 25-Mounting shaft; 26-First motor shaft; 27-Connecting bracket; 28-Second track; 29-Left slider; 30-Right slider; 31-Rack; 32-Fourth motor; 33-Small spur gear. Detailed Implementation

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] It should be noted that in the description of this invention, the terms "upper", "lower", "top", "bottom", "one side", "the other side", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not mean that the device or element must have a specific orientation, or be constructed and operated in a specific orientation.

[0029] See appendix Figures 1 to 7This paper presents a specific structure of an embodiment of an obstacle-crossing oil pipeline grinding and paint removal device proposed in this invention. The device includes a pressure applying mechanism, an arc-shaped clamping member 7, a mounting frame, a transmission mechanism, a traveling mechanism, and a grinding mechanism 15.

[0030] like Figure 4 As shown, the mounting bracket includes a lower mounting bracket 3 and an upper mounting bracket 4. In this embodiment, both the upper mounting bracket 4 and the lower mounting bracket 3 are arc-shaped structures, and the arc length of the upper mounting bracket 4 is greater than that of the lower mounting bracket 3. The lower mounting bracket 3 is correspondingly disposed below the middle of the upper mounting bracket 4 and is fixedly connected to the upper mounting bracket 4. L-shaped connecting brackets 27 are symmetrically fixed to the left and right sides of the rear end face of the upper mounting bracket 4. The pressure applying mechanism is disposed in the middle of the upper mounting bracket 4. Circumferential sliding grooves are respectively installed at the left and right ends of the lower mounting bracket 3. The arc-shaped clamping members 7 are respectively slidably connected to the sliding grooves at both ends of the lower mounting bracket 3 via the second track 28. The grooves are respectively connected to the pressure applying mechanisms. This connection method is convenient for installation and allows the rubber tracked vehicle 10 to move radially. It can also transmit the power provided by the rubber tracked vehicle 10 to the entire device through the arc-shaped clamping member 7. The transmission mechanism is fixed between the bottom of the two connecting frames 27 and arranged coaxially with the pipe 9. The walking mechanism is respectively set between the arc-shaped clamping members 7 on both sides and the pipe 9, and the walking mechanism is slidably connected to the arc-shaped clamping member 7. The grinding mechanism 15 is evenly distributed around the circumference between the transmission mechanism and the pipe 9, and is slidably connected to the transmission mechanism. In this embodiment, the number of grinding mechanisms 15 is set to three sets.

[0031] The pressure-applying mechanism includes a right mechanical claw 1, a left mechanical claw 2, a first motor 12, and a mounting shaft 25. The first motor 12's shaft passes through the shaft hole of the mounting bracket 4 and is fixed to the middle of the rear end face of the upper mounting bracket 4 by bolts. The left mechanical claw 2 and the right mechanical claw 1 are symmetrically arranged on the left and right sides of the middle of the front end face of the upper mounting bracket 3, and the inner ends of the two mechanical claws mesh with each other. The inner side of the left mechanical claw 2 is shaft-fitted with the hole of the mounting shaft 25, and the mounting shaft 25 is fixed to the upper mounting bracket 4. The inner side of the right mechanical claw 1 is keyed to the shaft 26 of the first motor. In this embodiment, circular baffles are provided on the outer side of the connection between the left mechanical claw 2 and the mounting shaft 25, and on the outer side of the connection between the right mechanical claw 1 and the first motor shaft 26, to prevent the mechanical claws from jumping off.

[0032] The two arc-shaped clamping parts 7 correspond to the outer ends of the left mechanical claw 2 and the right mechanical claw 1, respectively; the end face of the arc-shaped clamping parts 7 is evenly distributed with screw holes in the circumferential direction, and a circumferential sliding groove is opened below each screw hole.

[0033] The walking mechanism includes a slider 5, a rubber track vehicle 10, and a connecting rod 11; the bottom end of the connecting rod 11 is vertically fixed to the middle of the upper end face of the rubber track vehicle 10; the slider 5 is correspondingly disposed at the upper end of the connecting rod 11; in this embodiment, the slider 5 is composed of a left slider 29 and a right slider 30; both the left slider 29 and the right slider 30 are L-shaped structures; wherein, the bottom end of the left slider 29 is provided with a threaded rod, and the upper end of the connecting rod 11 and the bottom end of the right slider 30 are respectively provided with corresponding... The threaded holes; the threaded rod on the bottom edge of the left slider 29 passes through the upper end of the connecting rod 11 and the bottom edge of the right slider 30 in sequence, and is threadedly connected to the connecting rod 11 and the bottom edge of the right slider 30 respectively; the middle area of ​​the side of the left slider 29 and the right slider 30 are respectively provided with threaded holes, and the bottom edges of the left slider 29 and the right slider 30 are respectively slidably connected to the grooves on the end face of the arc-shaped clamping member 7, and the threaded holes on the side of the left slider 29 and the right slider 30 are fixedly connected to the corresponding threaded holes on the end face of the arc-shaped clamping member 7 by bolts.

[0034] The left mechanical claw 2 and the right mechanical claw 1 transmit pressure to the arc-shaped clamping member 7 through tooth meshing transmission, thereby increasing the friction between the rubber track vehicle 10 and the outer wall of the pipe 9. When crossing the pipe 9 joint, the output torque of the first motor 12 is reduced, so that the rubber track vehicle 10 can move radially to cross the pipe 9 joint. Due to the suspension system of the rubber track vehicle 10, it can ensure its smooth forward movement and is not prone to overturning.

[0035] The transmission mechanism includes an upper internal gear 6, a lower internal gear 8, bolted connectors 13, and a split guide rail 14. Both the upper internal gear 6 and the lower internal gear 8 are semi-circular structures. They are connected to form a circular gear ring, with both ends fixedly connected by bolted connectors 13. The rear end faces of both the upper internal gear 6 and the lower internal gear 8 are provided with circumferential grooves, and the split guide rail 14 is slidably connected within these grooves. The left and right sides of the outer circumferential end face of the upper internal gear 6 are fixedly connected to the ends of the two connecting pieces 27. The split guide rail 14 is fixedly connected to the upper end of the grinding mechanism.

[0036] The grinding mechanism 15 includes a large spur gear 16, a second motor 17, a fixed baffle 18, a spring 19, a sliding baffle 20, a third motor 21, a first track 22, a housing 23, a grinding disc 24, a rack 31, a fourth motor 32, and a small spur gear 33. The housing 23 has a rectangular structure. The fixed baffle 18 is horizontally fixed to the upper region inside the housing 23. The first track 22 is longitudinally arranged on the front and rear sides of one end of the bottom surface inside the housing 23. The movable baffle 20 is horizontally arranged between the fixed baffle 18 and the bottom surface inside the housing, and is slidably connected to the first track 22 on both sides. The spring 19 is connected between the four corner regions of the fixed baffle 18 and the sliding baffle 20. The large spur gear 16 is located above the fixed baffle 18 and is connected to the shaft of the second motor 17. The connection is as follows: the second motor 17 is fixedly connected to the upper part of the housing 23; the third motor 21 is fixedly connected to one side of the bottom of the movable baffle 20, and its rotating shaft passes downward through the bottom surface of the housing 23 and is coaxially fixedly connected to the grinding disc 24; the fourth motor 32 is fixedly connected to the other side of the bottom of the movable baffle 20; the small spur gear 33 is coaxially keyed to the rotating shaft of the fourth motor 32; the rack 31 is longitudinally fixed to the lower middle part of the inner wall of one side of the housing 23, and the part of the movable baffle 20 corresponding to the rack 31 is provided with a through hole to ensure that it does not interfere with the rack 31; the small spur gear 33 meshes with the rack 31; the top of the housing 23 is fixedly connected to the split guide rail in the rear end face groove of the upper internal gear 6 or the lower internal gear 8 by bolts; the large spur gear 16 meshes with the rack on the inner circumference of the upper internal gear 6 or the lower internal gear 8.

[0037] The working principle of this invention is as follows:

[0038] The first motor 12 is started, and the left mechanical claw 2 and the right mechanical claw 1 mesh and rotate, applying positive pressure to the arc-shaped clamping parts 7 on both sides, thereby increasing the friction between the rubber track vehicle 10 and the outer wall of the pipe 9 to be painted, ensuring that there will be no slippage during the paint removal and polishing process.

[0039] The third motor 21 is started, and the power of the third motor 21 is converted into the high-speed rotation of the grinding disc 24, and the speed of the grinding disc 24 is adjusted.

[0040] The second motor 17 is started, and the power of the second motor 17 is converted into the meshing transmission between the large spur gear 16 and the upper internal gear 6 and the lower internal gear 8, so that the grinding mechanism 15 rotates circumferentially along the surface of the pipe 9 to be depainted.

[0041] Start the rubber track vehicle 10, the paint removal and polishing device moves forward, pre-removes and polishes a certain distance, and adjusts the rotation speed of the second motor 17 and the third motor 21 to ensure that the surface of the pipe 9 can be fully polished in a circumferential manner.

[0042] If the grinding process requires crossing the joint of pipe 9, adjust the torque of the first motor 12 to allow the rubber tracked vehicle 10 to move radially, turn off the third motor 21, start the fourth motor 32 to retract the grinding disc 24, and after passing the joint of pipe 9, turn off the fourth motor 32. The sliding baffle 20 slides down under the action of the spring 19, and the grinding disc 24 extends again. Start the third motor 21 again, adjust the torque of the first motor 12, and continue grinding.

[0043] All matters not covered in this invention are common knowledge.

[0044] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A device for grinding and removing paint from oil pipelines capable of overcoming obstacles, characterized in that: The device includes a pressure applying mechanism, arc-shaped clamping components, a mounting frame, a transmission mechanism, a traveling mechanism, and a grinding mechanism. The mounting frame includes an upper mounting frame and a lower mounting frame, both of which are arc-shaped structures. The lower mounting frame is fixedly connected to the lower middle part of the upper mounting frame. Connecting frames are symmetrically fixedly connected to the left and right sides of the rear end face of the upper mounting frame. The pressure applying mechanism is located in the middle of the upper mounting frame. The arc-shaped clamping components are slidably connected to both ends of the lower mounting frame and correspond to the pressure applying mechanism. The transmission mechanism is fixedly connected between the bottoms of the two connecting frames and is coaxially arranged with the pipe. The traveling mechanism is located between the two arc-shaped clamping components and the pipe and is slidably connected to the arc-shaped clamping components. The grinding mechanism is evenly distributed circumferentially between the transmission mechanism and the pipe and is slidably connected to the transmission mechanism. The pressure application mechanism includes a first motor, a left mechanical claw, a right mechanical claw, and a mounting shaft; the first motor is located on one side of the middle of the rear end face of the upper mounting bracket; the left and right mechanical claws are symmetrically arranged on both sides of the middle of the front end face of the upper mounting bracket, and their inner ends mesh with each other; the inner side of the left mechanical claw is engaged with the mounting shaft hole, and the mounting shaft is fixedly connected to the upper mounting bracket; the inner side of the right mechanical claw is keyed to the rotating shaft of the first motor. The two arc-shaped clamping parts correspond to the ends of the left and right mechanical claws, respectively, and the arc-shaped clamping parts are slidably connected to the ends of the lower mounting bracket via a second circumferential track; the end face of the arc-shaped clamping parts is evenly distributed with screw holes in the circumferential direction, and a circumferential groove is opened below the screw holes; The transmission mechanism includes an upper internal gear, a lower internal gear, a split guide rail, and bolted connectors; both the upper and lower internal gears are semi-circular structures; the upper and lower internal gears are connected to form a circular gear ring, and their two ends are fixedly connected by bolted connectors; the rear end faces of both the upper and lower internal gears are provided with circumferential grooves, and the split guide rails are slidably connected in the grooves; the left and right sides of the outer circumferential end face of the upper internal gear are fixedly connected to the ends of the connectors. The grinding mechanism includes a large spur gear, a second motor, a fixed baffle, a spring, a sliding baffle, a third motor, a first track, a housing, a grinding disc, a rack, a fourth motor, and a small spur gear; the fixed baffle is located in the upper region inside the housing; the first track is longitudinally arranged on both sides of one end of the bottom surface inside the housing; the sliding baffle is slidably connected to the first track on both sides; the spring is connected between the four corner regions of the fixed baffle and the sliding baffle; the large spur gear is located above the fixed baffle and is keyed to the shaft of the second motor; the second... The motor is fixedly connected to the housing; the third motor is fixedly connected to the bottom of the sliding baffle, and its rotating shaft passes downward through the housing and is coaxially fixedly connected to the grinding disc; the fourth motor is fixedly connected to the bottom of the sliding baffle; the small spur gear is coaxially keyed to the rotating shaft of the fourth motor; the rack is longitudinally fixedly connected to the lower middle area of ​​the inner wall of the housing and does not interfere with the sliding baffle; the small spur gear meshes with the rack; the top of the housing is fixedly connected to the split guide rail in the sliding groove of the rear end face of the upper internal gear or the lower internal gear; the large spur gear meshes with the rack on the inner circumference of the upper internal gear or the lower internal gear.

2. The obstacle-crossing oil pipeline grinding and paint removal device according to claim 1, characterized in that: The walking mechanism includes a rubber track vehicle, a connecting rod, and a slider; the bottom end of the connecting rod is vertically fixed to the middle of the upper end face of the rubber track vehicle; the slider is correspondingly disposed at the upper end of the connecting rod; the slider has a screw hole on its side; the slider is slidably connected to the groove on the end face of the arc-shaped clamping component, and the screw hole on the side of the slider is fixed to the corresponding screw hole on the end face of the arc-shaped clamping component by screws.

3. The obstacle-crossing oil pipeline grinding and paint removal device according to claim 2, characterized in that: The slider consists of a left slider and a right slider; both the left slider and the right slider are L-shaped; the bottom end of the left slider is provided with a threaded rod, and the upper end of the connecting rod and the bottom end of the right slider are provided with corresponding threaded holes; the threaded rod at the bottom of the left slider passes through the upper end of the connecting rod and the bottom edge of the right slider in sequence, and is threadedly connected to the connecting rod and the bottom edge of the right slider respectively; the middle area of ​​the side of the left slider and the right slider are respectively provided with threaded holes.

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