Automatic winding device for medium frequency heating cable of oil pipeline

Abstract

The present invention discloses an automatic winding walking device for medium-frequency heating cables in oil pipelines, comprising: a clamping walking mechanism, which encloses and clamps the outer periphery of the jacket tube and advances at a constant speed; a cable winding mechanism, which winds the medium-frequency heating cable around the outer periphery of the jacket tube while the clamping walking mechanism advances; and a sheet metal box body, which accommodates and supports the clamping walking mechanism and the cable winding mechanism. The clamping walking mechanism comprises: a top longitudinal bracket, which is located at the top of the jacket tube, and whose axis is parallel to the axis of the jacket tube; active walking wheels, which are installed below the two ends of the top longitudinal bracket and are respectively supported on the top of the jacket tube; a bottom longitudinal bracket, which is symmetrically located on both sides of the bottom of the jacket tube and is distributed in an isosceles triangle with the top longitudinal bracket; and bottom walking wheels, which are installed at both ends of the corresponding bottom longitudinal bracket and respectively rest against the bottom of the jacket tube. This device can meet the construction requirements of long-distance oil pipelines, greatly reduce labor intensity, save construction expenses, and reduce construction costs.

Description

Technical Field

[0001] The invention relates to a device for field oil pipeline construction, in particular to an automatic winding and walking device for a medium-frequency heating cable in an oil pipeline, belonging to the technical field of oil pipeline construction. Background Art

[0002] my country's oil fields produce a large amount of waxy crude oil. Waxy crude oil is a multiphase hydrocarbon mixture. The solubility of wax in crude oil decreases with decreasing temperature. During crude oil transportation, when the temperature drops to a certain value where the solubility of wax in crude oil is less than the wax content of the crude oil, the dissolved wax in the crude oil begins to precipitate and adhere to the inner wall of the oil pipeline. The viscosity of the crude oil increases sharply. As the temperature continues to decrease, the number of precipitated wax crystals increases, and they cross-link into a network structure. When the network structure reaches a certain strength, the crude oil loses its fluidity and solidifies, seriously affecting its transportation. Therefore, oil pipelines must adopt thermal wax removal and prevention technology, using heat energy to increase the temperature of the transported crude oil and melt the wax crystals to achieve the purpose of wax removal and prevention.

[0003] Compared to other heating technologies, medium-frequency cable heating offers superior safety, high reliability, easy operation and maintenance, and zero emissions. Therefore, medium-frequency heating cables are currently widely used for heating and insulation of single-well oil pipelines in oil fields. The installation method for medium-frequency heating cables is manual winding, which is not only time-consuming and labor-intensive, but also inefficient and difficult to meet long-distance construction requirements.

[0004] The Chinese utility model patent with publication number CN218174180U discloses a rotary stress relieving tool for field construction of medium-frequency heating cables in oil pipelines. The left and right ends of the horizontal base plate are respectively welded with upwardly erected and parallel tripods, and the vertices of the two tripods are respectively welded with short shafts extending toward each other and coaxial, one of the short shafts is provided with an outlet hole passing through along the axial direction; a rectangular frame is hinged between the two short shafts, and the middle parts of the left and right sides of the rectangular frame are supported on the corresponding short shafts by bearings respectively, and the middle parts of the other two sides of the rectangular frame are provided with frame through holes, and the inner edges of the two frame through holes are respectively provided with frame bosses, and a cable drum is installed between the two frame bosses. The center tube of the cable drum is sleeved on the long shaft, and the two ends of the long shaft are respectively supported in the two frame through holes of the rectangular frame, and the medium-frequency cable wrapped on the cable drum is led out from the outlet holes of the short shaft. This technical solution solves the problem of twist release during the unwinding process of the medium frequency cable and eliminates rotational stress. However, it still requires manual work to wind the cable around the outer wall of the oil pipeline, which is labor-intensive and time-consuming. Construction is also difficult if ditches are encountered. Summary of the Invention

[0005] The purpose of the present invention is to overcome the problems existing in the prior art of manually winding heating cables and to provide an automatic winding walking device for medium-frequency heating cables in oil pipelines, which can meet the construction requirements of long-distance oil pipelines, greatly reduce labor intensity, and at the same time reduce construction costs and save construction costs.

[0006] In order to solve the above technical problems, the present invention provides an automatic winding walking device for medium-frequency heating cables in oil pipelines, comprising:

[0007] The clamping walking mechanism clamps the outer periphery of the jacket tube and moves forward at a constant speed;

[0008] a cable winding mechanism for winding the medium frequency heating cable around the outer periphery of the jacket tube while the clamping travel mechanism advances;

[0009] The sheet metal box accommodates and supports the clamping travel mechanism and the cable winding mechanism.

[0010] Furthermore, the clamping walking mechanism includes:

[0011] a top longitudinal support, located at the top of the jacket tube, with an axis parallel to the axis of the jacket tube;

[0012] Active running wheels are installed below both ends of the top longitudinal support and are respectively supported on the top of the jacket tube;

[0013] Bottom longitudinal supports are symmetrically located on both sides of the bottom of the jacket tube and are distributed in an isosceles triangle with the top longitudinal supports;

[0014] The bottom running wheels are mounted on both ends of the corresponding bottom longitudinal brackets and respectively abut against the bottom of the jacket tube.

[0015] Furthermore, the active walking wheels are driven by walking servo motors respectively.

[0016] Furthermore, U-shaped brackets are fixedly connected to the same side of both ends of the top longitudinal bracket, and the travel servo motors are respectively fixed on the U-shaped brackets.

[0017] Furthermore, the opening of the U-shaped bracket is downward, the travel servo motor is fixed on the outside of the travel reducer, the travel reducer is fixed on the outer wall of the U-shaped bracket and the output shaft is connected to the axle of the active travel wheel through a coupling.

[0018] Furthermore, the top center of the top longitudinal bracket is fixedly connected to the lower center of the transverse bracket, and the two ends of the transverse bracket are respectively fixed to the inner walls on both sides of the sheet metal box body.

[0019] Furthermore, the top longitudinal support is a channel steel with an opening facing downward, and each of the active running wheels and the bottom running wheels is a concave arc rubber wheel.

[0020] Furthermore, the transverse bracket includes two mutually parallel transverse plates, and the two clamp arms pass symmetrically between the two transverse plates. The lower hooks of the two clamp arms are respectively fixedly connected to the middle of the outer wall of the bottom longitudinal bracket, and the upper parts of the two clamp arms are respectively hinged to the two ends of the cross arm. A screw nut is fixed to the middle of the cross arm, and a screw is screwed in the screw nut. The lower end of the screw can be rotatably connected to the center of the top longitudinal bracket and axially positioned.

[0021] Furthermore, limit pins are respectively provided on both sides of the two clamp arms, and both ends of the limit pins are fixed on the transverse plate; the upper part of the clamp arm passes through the top straight groove of the sheet metal box body.

[0022] Furthermore, a guide sleeve is installed in the middle of the transverse bracket, and both sides of the guide sleeve are embedded in the grooves of the two transverse plates. The lower end polished rod section of the lead screw passes through the guide sleeve.

[0023] Furthermore, the upper end of the lead screw is provided with a through hole or a square tenon or a hexagonal head.

[0024] Furthermore, reinforcing ribs are fixed to the inner walls of both sides of the sheet metal box body, and both ends of the transverse bracket are fixed to the reinforcing ribs through angle connectors.

[0025] Furthermore, a box body hole for accommodating the jacket tube is provided at the center of the rear wall of the sheet metal box body, and a box body notch for the jacket tube to pass through is provided at the lower end of the box body hole.

[0026] Furthermore, the cable winding mechanism includes:

[0027] A winding rotating disk is located outside the rear wall of the sheet metal box body and is coaxial with the box body opening. The circumference of the winding rotating disk is provided with a rotating disk opening for the jacket tube to pass through;

[0028] The cable drum installation shaft is vertically fixed to the outer end surface of the winding rotary drum and extends outward in a cantilevered manner;

[0029] The pay-off mechanism is vertically fixed to the outer end surface of the winding rotary disk and symmetrically located on both sides of the cable drum installation axis. The outer end is provided with a pay-off guide wheel.

[0030] Furthermore, the winding rotating disk is driven by a plurality of symmetrically distributed rotating disk friction wheels, each of which is a groove wheel, and the outer edge of the winding rotating disk is respectively embedded in the groove of each of the rotating disk friction wheels.

[0031] Furthermore, the middle section of the axle of each turntable friction wheel passes through the driving wheel axle seat respectively, and each driving wheel axle seat is fixed on the sheet metal box body respectively. The inner end of the axle of each turntable friction wheel extends into the sheet metal box body and is respectively fixed with a winding drive wheel. Each winding drive wheel is connected through a winding drive belt transmission and is driven by a winding servo motor.

[0032] Furthermore, each of the winding drive wheels is a double-groove pulley, and each winding drive wheel is connected in series through the winding drive belt. A large synchronous pulley is coaxially installed on the inner side of one of the winding drive wheels, and the large synchronous pulley is connected to the small synchronous pulley through a synchronous toothed belt. The small synchronous pulley is installed at the output end of the winding servo motor.

[0033] Furthermore, the winding servo motor is fixed on an angular support, the angular support is fixed on the outer wall of the sheet metal box body, and the synchronous toothed belt passes through a hole in the sheet metal box body.

[0034] Furthermore, there are four turntable friction wheels, which are respectively close to the four corners of the rear wall of the sheet metal box body; the turntable friction wheels located at the bottom are connected to the turntable friction wheels above them through vertically winding drive belts, and the two upper turntable friction wheels are connected through horizontally winding drive belts.

[0035] Furthermore, the middle sections of the vertically winding drive belt and the horizontally winding drive belt are respectively provided with tensioning wheels, the axles of each tensioning wheel respectively pass through the I-shaped grooves of the sheet metal box body, the outer ends of the axles of each tensioning wheel are respectively fixed in the adjusting seats, the bottom walls of the adjusting seats are movably connected to the outer walls of the sheet metal box body and can be translated along the direction of the I-shaped grooves; the middle parts of the bent ends of the adjusting seats are respectively connected with adjusting screws, the heads of the adjusting screws are respectively rotatably fixed in the fixing seats, and the fixing seats are fixedly connected to the sheet metal box body.

[0036] Furthermore, the outer periphery of the winding rotating disk is symmetrically provided with turntable straightening wheels, each turntable straightening wheel is a groove wheel, the outer edge of the winding rotating disk is respectively embedded in the groove of each turntable straightening wheel, the axle of each turntable straightening wheel is respectively fixed in the straightening wheel axle seat, and each straightening wheel axle seat is respectively fixed on the sheet metal box body.

[0037] Furthermore, the front side and the bottom of the sheet metal box body are open, and the box body hole, the box body notch and the lower edge of the rear wall of the sheet metal box body are provided with a bent reinforcement plate.

[0038] Furthermore, a damping gear is installed at the root of the cable drum installation shaft, the damping gear is meshed with a damping pinion, and the central axis of the damping pinion is fixed on the winding rotating disk.

[0039] Furthermore, a control box is fixed to the outer wall of the sheet metal box body, and the control box controls the rotation speed of the winding servo motor and the rotation speed of the travel servo motor to be linked.

[0040] Furthermore, battery boxes are respectively inserted into the two upper corners of the sheet metal box body, and both battery boxes are located above the horizontal bracket.

[0041] Furthermore, handles are symmetrically installed on the lower parts of both sides of the sheet metal box body.

[0042] Compared with the existing technology, the present invention has achieved the following beneficial effects: 1. It transforms the traditional manual winding method into a mechanized and automated method, which can greatly improve work efficiency and reduce labor costs;

[0043] 2. It adopts advanced motor drive technology and programmable control system, which can automatically adjust according to the heating pipelines of different diameters to achieve precise control; it can automatically wind the heating cable evenly according to the winding density and has a large load-bearing capacity;

[0044] 3. The frame of the winding device can be hung on the pipeline to automatically move the entire device along the pipeline direction. The moving speed matches the density of the cable wound by the winding device to meet the design requirements of uniform heating;

[0045] 4. Efficiently and at low cost, it can meet the needs of pipeline medium frequency heating cables, change the time-consuming and labor-intensive situation of manual installation, and also solve the difficult situation of outdoor ground and ditch construction;

[0046] 5. After being put into use, work efficiency has increased by more than 3-4 times, and labor costs have been reduced by about 60%. In addition, it can be expanded to other uses: by replacing the cable on the medium-frequency heating cable winder with glass fiber cloth, it can be used for the construction of anti-corrosion glass fiber cloth on the outside of field pipelines, and can complete the winding of one to three layers of glass fiber cloth at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The accompanying drawings are only provided for reference and illustration and are not intended to limit the present invention.

[0048] Figure 1 This is a front view of the automatic winding walking device for the medium-frequency heating cable of the oil pipeline of the present invention;

[0049] Figure 2 for Figure 1 Right view;

[0050] Figure 3 for Figure 1 A top view of

[0051] Figure 4 The three-dimensional structure of the automatic winding walking device of the medium-frequency heating cable of the oil pipeline of the present invention Figure 1 ;

[0052] Figure 5 The three-dimensional structure of the automatic winding walking device of the medium-frequency heating cable of the oil pipeline of the present invention Figure 2 ;

[0053] Figure 6 This is a front view of the clamping travel mechanism of the present invention;

[0054] Figure 7 for Figure 6 Right view;

[0055] Figure 8 for Figure 6 Stereoscopic image of

[0056] Figure 9 This is an end view of the cable winding mechanism of the present invention;

[0057] Figure 10 for Figure 9 Rear view;

[0058] Figure 11 for Figure 9 Stereoscopic image of

[0059] In the figure: 1. Sheet metal box; 1a. Reinforcement rib; 2. Top longitudinal bracket; 2a. Active travel wheel; 3. Bottom longitudinal bracket; 3a. Bottom travel wheel; 4. U-shaped bracket; 5. Travel servo motor; 6. Coupling; 7. Cross arm; 7a. Limit pin; 8. Screw nut; 9. Screw; 10. Clamp arm; 11. Cross bracket; 12. Angular connector; 13. Guide sleeve; 14. Winding rotary disc; 15. Cable drum mounting shaft; 16. Damping gear; 17. Damping gear; 18. Pay-off mechanism; 1 8a. Pay-off guide wheel; 19. Turntable friction wheel; 20. Winding drive wheel; 21. Vertical winding drive belt; 22. Horizontal winding drive belt; 23. Winding servo motor; 24. Small synchronous pulley; 25. Synchronous toothed belt; 26. Large synchronous pulley; 27. Angular support; 28. Fixed seat; 29. ​​Adjusting screw; 30. Adjusting seat; 31. Tensioner; 32. Turntable straightening wheel; 32a. Straightening wheel shaft; 33. Control box; 34. Handle; 35. Battery box; 36. Oil pipeline; 36a. Jacket tube. DETAILED DESCRIPTION

[0060] In the following description of the present invention, the terms "up", "down", "front", "back", "left", "right", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not mean that the device must have a specific direction.

[0061] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below with reference to specific illustrations.

[0062] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0063] like Figures 1 to 5 As shown, the automatic winding travel device for medium-frequency heating cables in oil pipelines of the present invention comprises a clamping travel mechanism, a cable winding mechanism, and a sheet metal box 1. The clamping travel mechanism includes a top longitudinal bracket 2, a bottom longitudinal bracket 3, and a travel servo motor 5. The top longitudinal bracket 2 is located at the top of the jacket tube 36a, which wraps around the outer circumference of the oil pipeline 36, with insulation material filling the space between the top longitudinal bracket 2 and the bottom longitudinal bracket 3. Two bottom longitudinal brackets 3 are symmetrically located on either side of the bottom of the jacket tube 36a, forming an isosceles triangle with the top longitudinal bracket 2. The axes of the top longitudinal bracket 2 and the bottom longitudinal bracket 3 are both parallel to the axis of the jacket tube 36a.

[0064] like Figures 6 to 8 As shown, the top longitudinal bracket 2 is a channel steel with an opening downward, and ears can also be welded or fixed at both ends. Active walking wheels 2a are installed under the ears through roller shafts. The two active walking wheels 2a are both supported on the top of the jacket tube 36a and have friction for walking. Driven by the walking servo motor 5, the entire device can be carried to walk along the axial direction of the jacket tube 36a.

[0065] The bottom longitudinal bracket 3 is a channel steel with an opening facing the jacket tube 36a, and bottom running wheels 3a are respectively installed at both ends of the channel steel. The two sets of bottom running wheels 3a are symmetrically against the bottom sides of the jacket tube 36a. Each active running wheel 2a and the bottom running wheel 3a are concave arc rubber wheels, which are enclosed and clamped on the outer periphery of the jacket tube 36a, and double wheels are used for axial support, which can protect the outer anti-corrosion and heat-insulating jacket tube 36a of the oil pipeline 36; the axial support points are spaced a distance apart, and can also resist overturning torque.

[0066] A U-shaped bracket 4 is fixedly connected to the same side of both ends of the top longitudinal bracket 2. The opening of the U-shaped bracket 4 is downward. The outside of the U-shaped bracket 4 is fixed with a travel reducer. The travel servo motor 5 is fixed on the outside of the travel reducer and drives the input end of the travel reducer. The output shaft of the travel reducer is connected to the axle of the active travel wheel 2a through a coupling 6.

[0067] The clamping travel mechanism suspends the entire device horizontally along the pipeline axis. Two travel servo motors 5 synchronously drive the two active travel wheels 2a to advance at a constant speed along the axial direction of the jacket tube 36a. During travel, the cable winding mechanism winds the cable according to the designed winding density, completing the automatic cable winding process.

[0068] The top center of the top longitudinal bracket 2 is fixedly connected to the lower center of the transverse bracket 11. The transverse bracket 11 comprises two parallel transverse plates, each of which is secured to the reinforcing ribs 1a via angle connectors 12 at each end. The reinforcing ribs 1a are screwed to the inner walls of the sheet metal box 1 on either side to enhance the strength of the sheet metal box 1. The reinforcing ribs 1a can be X-shaped or two V-shaped plates connected top to bottom. The V-shaped plate with the upward opening is shorter, while the V-shaped plate with the downward opening is longer. The joint is widened to accommodate the angle connectors 12.

[0069] The two clamp arms 10 pass symmetrically between the two horizontal plates, and the upper part of the clamp arm 10 passes through the straight groove at the top of the sheet metal box body 1; the lower hooks of the two clamp arms 10 are respectively welded to the middle of the outer wall of the bottom longitudinal bracket 3, and the upper parts of the two clamp arms 10 are respectively hinged to the two ends of the cross arm 7 through pins. The cross arm 7 also includes two plates parallel to each other. A screw nut 8 is fixed in the middle part of the cross arm 7, that is, between the two plates. A screw nut 8 is screwed in the screw nut 8. The lower end of the screw 9 is rotatably connected to the center of the top longitudinal bracket 2 and axially positioned.

[0070] The upper end of the lead screw 9 is provided with a through hole, a square tenon, or a hexagonal head to facilitate the rotation of the lead screw 9. A guide sleeve 13 is mounted in the middle of the transverse bracket 11. The two sides of the guide sleeve 13 are embedded in the grooves of the two transverse plates. The lower end of the lead screw 9 passes through the guide sleeve 13, which serves as a guide to ensure that the axis of the lead screw 9 points vertically downward to the axis of the oil pipeline 36 and its jacket tube 36a.

[0071] Limit pins 7a are respectively provided on both sides of the two clamp arms 10, and the two ends of the limit pins 7a are fixed on the horizontal plate; the inner pair of limit pins 7a limit the minimum angle between the two clamp arms 10, and the outer pair of limit pins 7a limit the maximum angle between the two clamp arms 10.

[0072] A box body hole for accommodating the jacket tube 36 a is provided at the center of the rear wall of the sheet metal box body 1 , and a box body notch for the jacket tube 36 a to pass through is provided at the lower end of the box body hole.

[0073] The clamping mechanism has a uniform opening. When the device is placed on the jacket tube 36a, the lower ends of the two clamp arms 10 open slightly wider, widening the opening between the two bottom longitudinal supports 3. This allows the active running wheels 2a of the top longitudinal support 2 to rest on the top of the jacket tube 36a. The screw 9 is then rotated. Due to the axial positioning of the lower end of the screw 9, the screw nut 8 drives the cross arm 7 upward, and the lower ends of the two clamp arms 10 converge until the bottom running wheels 3a on the two bottom longitudinal supports 3 are symmetrically enclosed at the bottom of the jacket tube 36a. This achieves automatic centering and suspension of the clamping mechanism. Adjustment of the screw 9 allows the clamping mechanism to accommodate pipe diameters ranging from 48 mm to 159 mm. This device is not only compact but also widely applicable, meeting the requirements for winding heating cables on most oil pipelines.

[0074] The cable winding mechanism is used to wind the medium frequency heating cable around the outer periphery of the jacket tube 36a while the clamping walking mechanism moves forward. The cable winding mechanism includes a winding rotary disk 14, a winding rotary disk 14 driving mechanism, a cable drum mounting shaft 15 and a wire-releasing mechanism 18.

[0075] The winding rotary disk 14 is located outside the rear wall of the sheet metal box body 1 and is coaxial with the box body hole. The circumference of the winding rotary disk 14 is provided with a rotary disk opening for the jacket tube 36a to pass through. When installing the device, the rotary disk opening faces downward, making it easy to ride the device on the jacket tube 36a.

[0076] The winding disc 14 is driven by a plurality of symmetrically distributed friction wheels 19. Preferably, four friction wheels 19 are provided, located near the four corners of the rear wall of the sheet metal box 1. Each friction wheel 19 is a grooved wheel, and the outer edge of the winding disc 14 fits into a groove in each friction wheel 19. The arc length of the disc opening is shorter than the arc length between two friction wheels 19, ensuring that all four friction wheels 19 can drive the winding disc 14 to rotate smoothly and continuously.

[0077] like Figure 5 、 Figures 9 to 11 As shown, the cable drum installation shaft 15 is vertically fixed on the outer end surface of the winding rotary disk 14 and extends outward in a cantilevered manner. When the rotary disk opening is facing downward, the cable drum installation shaft 15 is located on the top of the winding rotary disk 14. The cable drum installation shaft 15 is used to install the cable drum and fix it as required. A medium frequency heating cable with a length of 100-200 meters can be wound on the cable drum. The commonly used model of the medium frequency heating cable is ZR-YJV0.6 / 11×25), the conductor is a copper core or an aluminum core, the insulation layer is made of cross-linked polyethylene insulation, the outer periphery is made of polyvinyl chloride sheath, the withstand voltage is 600--1000V, it is a flame retardant low-voltage power cable, and the single core area is 25mm 2 .

[0078] The pay-off mechanism 18 is also vertically fixed to the outer end surface of the winding rotary disk 14, symmetrically located on both sides of the cable drum mounting shaft 15. The outer end is equipped with a pay-off guide wheel 18a. The intermediate frequency heating cable drawn from the cable drum is released outward through the pay-off guide wheel 18a on one side, ensuring that the cable is wound orderly and evenly around the outer circumference of the jacket tube 36a during the release process.

[0079] A damping gear 16 is mounted at the root of the cable drum mounting shaft 15. The damping gear 16 meshes with a damping pinion 17. The central axis of the damping pinion 17 is inserted into the pinion mounting seat, which is fixed to the winding rotary disk 14. This provides a certain degree of damping and braking for the rotation of the cable drum, preventing the cable from being loosened due to excessive release, and ensuring the safety and reliability of the entire device.

[0080] The outer circumference of the winding disc 14 is symmetrically provided with turntable straightening wheels 32, typically three in number: one located above the top of the winding disc 14, and the other two symmetrically located on either side of the winding disc 14. Each straightening wheel 32 is a sheave, with the outer edge of the winding disc 14 nestled within a notch in each straightening wheel 32. The straightening wheel axle 32a of each straightening wheel 32 is secured within a straightening wheel axle seat, which is secured to the sheet metal box 1. The three straightening wheels 32 further limit the circumference of the winding disc 14, ensuring smoother rotation and reducing vibration.

[0081] The winding rotary disk driving mechanism includes a winding servo motor 23, a small synchronous pulley 24, a synchronous toothed belt 25, a large synchronous pulley 26, a winding driving wheel 20, a winding driving belt and a tensioning mechanism.

[0082] The middle section of the axle of each turntable friction wheel 19 passes through the driving wheel axle seat respectively, and each driving wheel axle seat is fixed on the sheet metal box body 1 respectively. The inner end of the axle of each turntable friction wheel 19 extends into the sheet metal box body 1 and is respectively fixed with a winding drive wheel 20. Each winding drive wheel 20 is connected through a winding drive belt transmission and is driven by a winding servo motor 23.

[0083] The winding servo motor 23 is fixed to an angular support 27, which is fixed to the outer wall of the sheet metal box 1. A small synchronous pulley 24 is mounted on the output end of the winding servo motor 23. The small synchronous pulley 24 is connected to a large synchronous pulley 26 via a synchronous toothed belt 25. The synchronous toothed belt 25 passes through the hole in the sheet metal box 1. The large synchronous pulley 26 is coaxially mounted with one of the winding drive wheels 20 and rotates synchronously.

[0084] Each winding drive wheel 20 is a double-groove pulley. The turntable friction wheel 19 located below is connected to the turntable friction wheel 19 above it through a vertical winding drive belt 21, and the two upper turntable friction wheels 19 are connected through a horizontal winding drive belt 22. In this way, the synchronous rotation of each winding drive wheel 20 is achieved by bypassing the lower end opening of the sheet metal box body 1, and the synchronous rotation of each turntable friction wheel 19 is also achieved.

[0085] A tensioning pulley 31 is provided in the middle section of the vertical winding drive belt 21 and the horizontal winding drive belt 22. The axle of each tensioning pulley 31 passes through a slot in the sheet metal box body 1. The outer end of the axle of each tensioning pulley 31 is fixed to an adjustment seat 30. The bottom wall of the adjustment seat 30 is movably connected to the outer wall of the sheet metal box body 1 and can be translated along the direction of the slot. An adjusting screw 29 is connected to the middle of the bent end of each adjustment seat 30. The head of each adjusting screw 29 is rotatably fixed to a fixed seat 28, which is fixed to the sheet metal box body 1. Rotating the head of each adjusting screw 29 can pull the corresponding adjustment seat 30 to translate along the slot in the sheet metal box body 1. The slot provides clearance for the axle of the tensioning pulley 31. Through the translation of the tensioning pulley 31, the loose edge of the winding drive belt is tensioned.

[0086] Battery boxes 35 are respectively inserted into the two upper corners of the sheet metal box body 1. The two battery boxes 35 are both located above the transverse bracket 11 to provide power for the travel servo motor 5 and the winding servo motor 23.

[0087] A control box 33 is fixed to the outer wall of the sheet metal box body 1. This control box 33 controls the speed of the winding servo motor 23 and the speed of the travel servo motor 5. The travel mechanism and the cable winding mechanism are linked through a control program. The logical relationship is simple and reliable, achieving unified and coordinated operation of the device. After manually checking the coordination of the entire mechanism, the control box 33 can be turned on. The ratio of the speed of the winding rotary disk 14 to the travel speed of the device determines the winding density of the medium-frequency heating cable.

[0088] The front side and bottom of the sheet metal box body 1 are open, and the box body hole, box body notch and the lower edge of the rear wall of the sheet metal box body 1 are provided with bent reinforcement plates to strengthen weak parts such as the edge of the hole.

[0089] The cable winding mechanism's winding disc 14 is made of lightweight composite aluminum and features a car hub structure, high strength, and a large load-bearing capacity, meeting the demands of cable handling applications.

[0090] This device can be expanded for use by placing the glass fiber cloth roll on the cable drum installation shaft 15 and adding two wire-releasing mechanisms 18. Without major changes to the entire device, the construction of glass fiber cloth winding in pipeline external corrosion protection can be realized, and one to three layers of glass fiber cloth can be wound simultaneously.

[0091] The above description is only a preferred embodiment of the present invention, which shows and describes the basic principles, main features and advantages of the present invention, but does not limit the scope of patent protection of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. In addition to the above embodiments, the present invention may have other implementation modes without departing from the spirit and scope of the present invention. The present invention may also have various changes and improvements, and all technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention. The scope of protection required by the present invention is defined by the attached claims and their equivalents. Technical features not described in the present invention can be achieved by or using existing technologies, and will not be described here.

Claims

1. An automatic winding walking device for medium frequency heating cables in oil pipelines, characterized in that: include: The clamping walking mechanism is clamped around the outer periphery of the jacket tube and moves forward at a constant speed; a cable winding mechanism for winding the medium frequency heating cable around the outer periphery of the jacket tube while the clamping travel mechanism advances; A sheet metal box body accommodates and supports the clamping travel mechanism and the cable winding mechanism; The locking mechanism includes two longitudinal plates, each of which is fixedly secured to a position adjacent to the bottom bracket, and two rear ends of the crossbeam are secured to the locking mechanism, each of which is secured to a position adjacent to the bottom bracket. The center of the rear wall of the sheet metal box body is provided with a box body hole for accommodating the jacket tube, and the lower end of the box body hole is provided with a box body notch for the jacket tube to pass through; the cable winding mechanism includes: A winding rotating disk is located outside the rear wall of the sheet metal box body and is coaxial with the box body opening. The circumference of the winding rotating disk is provided with a rotating disk opening for the jacket tube to pass through; The cable drum installation shaft is vertically fixed to the outer end surface of the winding rotary drum and extends outward in a cantilevered manner; The pay-off mechanism is vertically fixed to the outer end surface of the winding rotary disk and symmetrically located on both sides of the cable drum installation axis, and the outer end is provided with a pay-off guide wheel; The winding rotating disk is driven by a plurality of symmetrically distributed rotating disk friction wheels, each of which is a grooved wheel, and the outer edge of the winding rotating disk is respectively embedded in the groove of each rotating disk friction wheel; The middle section of the axle of each turntable friction wheel passes through the driving wheel axle seat respectively, and each driving wheel axle seat is fixed on the sheet metal box body respectively. The inner end of the axle of each turntable friction wheel extends into the sheet metal box body and is fixed with a winding drive wheel respectively. Each winding drive wheel is connected by a winding drive belt and driven by a winding servo motor; Each of the winding drive wheels is a double-groove pulley, and each winding drive wheel is connected in series through the winding drive belt. A large synchronous pulley is coaxially installed on the inner side of one of the winding drive wheels, and the large synchronous pulley is connected to the small synchronous pulley through a synchronous toothed belt. The small synchronous pulley is installed at the output end of the winding servo motor.

2. The automatic winding walking device for medium frequency heating cables in oil pipelines according to claim 1 is characterized in that: The clamping walking mechanism also includes: Active running wheels are installed below both ends of the top longitudinal support and are respectively supported on the top of the jacket tube; The bottom running wheels are mounted on both ends of the corresponding bottom longitudinal brackets and respectively abut against the bottom of the jacket tube.

3. The automatic winding walking device for medium frequency heating cables in oil pipelines according to claim 2 is characterized in that: The active travel wheels are driven by travel servo motors respectively.

4. The automatic winding walking device for medium frequency heating cables in oil pipelines according to claim 3 is characterized in that: The same sides of both ends of the top longitudinal bracket are respectively fixedly connected with U-shaped brackets, and the travel servo motors are respectively fixed on the U-shaped brackets.

5. The automatic winding walking device for medium frequency heating cables in oil pipelines according to claim 4 is characterized in that: The opening of the U-shaped bracket is downward, the travel servo motor is fixed on the outside of the travel reducer, the travel reducer is fixed on the outer wall of the U-shaped bracket and the output shaft is connected to the axle of the active travel wheel through a coupling.

6. The automatic winding walking device for medium frequency heating cables in oil pipelines according to claim 2 is characterized in that: The top longitudinal support is a channel steel with an opening downward, and each of the active running wheels and the bottom running wheels is a concave arc rubber wheel.

7. The automatic winding walking device for medium frequency heating cables in oil pipelines according to claim 1 is characterized in that: Limit pins are respectively provided on both sides of the two clamp arms, and both ends of the limit pins are fixed on the transverse plate; the upper part of the clamp arm passes through the top straight groove of the sheet metal box body.

8. The automatic winding walking device for medium frequency heating cables in oil pipelines according to claim 1 is characterized in that: A guide sleeve is installed in the middle of the transverse bracket, and two sides of the guide sleeve are embedded in the grooves of the two transverse plates. The lower end polished rod section of the lead screw passes through the guide sleeve.

9. The automatic winding walking device for medium frequency heating cables in oil pipelines according to claim 1 is characterized in that: The upper end of the lead screw is provided with a through hole, a square tenon or a hexagonal head.

10. The automatic winding walking device for medium frequency heating cables in oil pipelines according to claim 1 is characterized in that: Reinforcement ribs are fixed to the inner walls of both sides of the sheet metal box body, and both ends of the transverse bracket are fixed to the reinforcement ribs through angle connectors.

11. The automatic winding walking device for medium frequency heating cables in oil pipelines according to claim 1 is characterized in that: The winding servo motor is fixed on an angular support, the angular support is fixed on the outer wall of the sheet metal box body, and the synchronous toothed belt passes through a hole in the sheet metal box body.

12. The automatic winding walking device for medium frequency heating cables in oil pipelines according to claim 1 is characterized in that: There are four turntable friction wheels, which are respectively close to the four corners of the rear wall of the sheet metal box body; the turntable friction wheels located at the bottom are connected to the turntable friction wheels above them through vertically wound drive belts, and the two upper turntable friction wheels are connected through horizontally wound drive belts.

13. The automatic winding walking device for medium frequency heating cables in oil pipelines according to claim 12 is characterized in that: The middle sections of the vertically winding drive belt and the horizontally winding drive belt are respectively provided with tensioning pulleys, the axles of each tensioning pulley pass through the straight grooves of the sheet metal box body respectively, the outer ends of the axles of each tensioning pulley are respectively fixed in the adjusting seats, the bottom walls of the adjusting seats are movably connected to the outer walls of the sheet metal box body and can be translated along the direction of the straight grooves; the middle sections of the bent ends of the adjusting seats are respectively connected with adjusting screws, the heads of the adjusting screws are respectively rotatably fixed in the fixing seats, and the fixing seats are fixedly connected to the sheet metal box body.

14. The automatic winding device for medium-frequency heating cables in oil pipelines according to claim 1 is characterized in that: The outer circumference of the winding rotating disk is also symmetrically provided with turntable straightening wheels, each turntable straightening wheel is a groove wheel, the outer edge of the winding rotating disk is respectively embedded in the groove of each turntable straightening wheel, the axle of each turntable straightening wheel is respectively fixed in the straightening wheel axle seat, and each straightening wheel axle seat is respectively fixed on the sheet metal box body.

15. The automatic winding device for medium frequency heating cables in oil pipelines according to claim 1 is characterized in that: The front side and the bottom of the sheet metal box body are open, and the box body hole, the box body notch and the lower edge of the rear wall of the sheet metal box body are provided with a bent reinforcement plate.

16. The automatic winding device for medium-frequency heating cables in oil pipelines according to claim 1 is characterized in that: A damping gear is installed at the root of the cable drum installation shaft. The damping gear is meshed with a damping pinion. The central axis of the damping pinion is fixed on the winding rotary disk.

17. The automatic winding device for medium frequency heating cables in oil pipelines according to claim 1 is characterized in that: A control box is fixed on the outer wall of the sheet metal box body, and the control box controls the rotation speed of the winding servo motor and the rotation speed of the travel servo motor to be linked.

18. The automatic winding device for medium-frequency heating cables in oil pipelines according to claim 1 is characterized in that: Battery boxes are respectively inserted into the two upper corners of the sheet metal box body, and both battery boxes are located above the horizontal bracket.

19. The automatic winding walking device for medium frequency heating cables in oil pipelines according to any one of claims 1 to 18, characterized in that: Handles are symmetrically installed on the lower parts of both sides of the sheet metal box body.

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