A pipe sliding pulling structure

Abstract

The application relates to a pipe-through sliding traction structure and relates to the technical field of steel-in-steel steam pipeline construction, which comprises a limiting mechanism, a moving mechanism and a traction mechanism, the limiting mechanism comprises a limiting ring, the top end of the limiting ring is fixedly connected with two fixed blocks, the top end of each of the two fixed blocks is fixedly connected with a nut, the interiors of the two nuts are threadedly connected with a bidirectional screw rod, the outer surface of the limiting ring is fixedly connected with multiple rollers, and the interior of the limiting ring is fixedly connected with an antiskid pad. The limiting mechanism is arranged, the bidirectional screw rod is driven to rotate through a knob, the antiskid pad in the interior of the limiting ring is tightly attached to the surface of a pipeline through the fixed blocks and the nuts, the limiting ring can be fixedly installed on the surface of a pipeline with different diameters, and under the cooperation of the rollers, sliding friction between an inner pipe and an outer pipe can be converted into rolling friction, so that the anticorrosion structure on the surface of the pipeline is prevented from being abraded during traction.

Description

Technical Field

[0001] This application relates to the field of steel-jacketed steam pipeline construction technology, and in particular to a pipe-sliding traction structure. Background Technology

[0002] Steel-jacketed steam pipelines, also known as insulated steam pipelines, are used in insulation and cold-preservation projects in industries such as heating, cooling, hot oil transportation, and chemicals. These pipelines consist of an outer steel casing, an insulation layer, and an inner working steel pipe. They can transport steam or media with pressures ≤2.5MPa and temperatures ≤350℃. The outer steel pipe is highly resistant to damage and easy to install. Direct underground burial eliminates the need for concrete structural support, effectively reducing material costs and shortening the construction period. Currently, steel-jacketed steam pipeline installations are mostly for small-diameter or short-distance installations, often employing methods such as jacking with sand inside the concrete casing for traction or using jacks to push the pipe after sand is laid.

[0003] However, existing traction mechanisms are not convenient for traction of inner pipes of different diameters, and the anti-corrosion structure on the pipe surface is easily worn during the traction process. In order to solve the above problems, a pipe sliding traction structure is proposed. Utility Model Content

[0004] The purpose of this application is to provide a pipe-sliding traction structure that facilitates the traction of inner pipes of different diameters and avoids wear on the anti-corrosion structure of the pipe surface during the traction process.

[0005] The present application provides a tube-through sliding traction structure with the following technical solution: A tube-through sliding traction structure includes a limiting mechanism, a moving mechanism, and a traction mechanism. The limiting mechanism includes a limiting ring, with two fixing blocks fixedly connected to the top of the limiting ring. Nuts are fixedly connected to the top of each of the two fixing blocks, and bidirectional lead screws are threaded into the two nuts. Multiple rollers are fixedly connected to the outer surface of the limiting ring, and an anti-slip pad is fixedly connected to the inside of the limiting ring. Two fixing rings are fixedly connected to the surface of the limiting ring, and an inner tube passes through the inside of the limiting ring. The moving mechanism includes a movable plate, with two sets of jacks fixedly connected to the upper surface of the movable plate. Placement grooves are fixedly connected to the tops of the two sets of jacks, and one end of the inner tube overlaps the upper surface of the placement groove. Two sets of moving wheels are fixedly connected to the lower surface of the movable plate.

[0006] By adopting the above technical solution, the double-sided screw is rotated by a knob, which allows the nut to drive the anti-slip pad inside the limiting ring to fit tightly against the surface of the pipe through the fixing block. This facilitates the fixed installation of the limiting ring on the surface of pipes with different diameters. With the help of rollers, the sliding friction between the inner and outer pipes can be converted into rolling friction, avoiding wear on the anti-corrosion structure of the pipe surface during traction. Under the action of the jack, the height of the placement groove can be adjusted, which is convenient for supporting pipes of different diameters. It can quickly compensate for the height difference between the inner pipe pressure plate and the outer pipe. Furthermore, the two sets of moving wheels under the movable plate allow the mechanism to be moved flexibly, making it easy to adjust the support position according to the construction progress, thereby improving construction efficiency and support stability.

[0007] Preferably, the traction mechanism includes a fixed platform, two support plates are fixedly connected to the upper surface of the fixed platform, a rotating shaft is rotatably connected to the support plates via bearings, a take-up roller is fixedly connected to the surface of the rotating shaft, a traction rope is wound around the surface of the take-up roller, and a servo motor is fixedly connected to the upper surface of the fixed platform.

[0008] By adopting the above technical solution, the servo motor can be started by simply connecting an external control switch, which can drive the winding roller to wind the traction rope, providing traction force for the movement of the inner tube. Compared with manual traction, the power output is more stable, and the speed of the servo motor can be adjusted by connecting an external control switch to adapt to different traction needs, thereby improving the controllability and reliability of the traction process.

[0009] Preferably, the output shaft of the servo motor is fixedly connected to a drive wheel, the surface of the drive wheel is fitted with a transmission belt, one end of the rotating shaft is fixedly connected to a driven wheel, and the drive wheel and the driven wheel are connected by a transmission belt.

[0010] By adopting the above technical solution, with the cooperation of the driving wheel, the transmission belt and the driven wheel, the power of the servo motor can be stably transmitted to the rotating shaft. The transmission belt can buffer the instantaneous impact force when the motor starts, avoiding mechanical damage to the rotating shaft due to sudden force. The cooperation between the driving wheel and the driven wheel can ensure stable speed, so that the winding roller can wind the traction rope at a uniform speed, thereby ensuring that the inner tube moves at a uniform speed along the outer tube.

[0011] Preferably, one end of the traction rope is fixedly connected to the surface of the take-up roller, and the other end of the traction rope is fixedly connected to a connecting rope. Both ends of the connecting rope are fixedly connected to hooks, and the hooks and fixing rings are matched.

[0012] By adopting the above technical solution, with the cooperation of hooks and fixing rings, rapid connection and disassembly can be achieved without the need for professional tools, thus shortening the construction connection time. The two hooks are respectively attached to symmetrical fixing rings, so that the traction force is evenly transmitted to the limiting ring through the fixing ring, avoiding the limiting ring from tilting due to unilateral force, and ensuring that the inner tube always moves along the outer tube axis during the traction process.

[0013] Preferably, both ends of the bidirectional lead screw are fixedly connected to knobs, and the surfaces of the two knobs are provided with anti-slip textures. The anti-slip pads are made of rubber material.

[0014] By adopting the above technical solution, the surface of the knob is provided with anti-slip texture, which can increase the friction coefficient between the operator's hand and the knob. The screw can be turned easily without the aid of tools, and the clamping tightness of the limit ring can be quickly adjusted. The rubber anti-slip pad has both elasticity and high friction performance. It can not only fit tightly against the surface of the inner tube to enhance clamping stability and prevent traction slippage, but also avoid the squeezing damage to the thin-walled inner tube caused by rigid clamping through elastic buffering.

[0015] Preferably, the plurality of rollers are evenly arranged on the surface of the limiting ring, and the two fixing rings are symmetrically arranged on the surface of the limiting ring.

[0016] By adopting the above technical solution, multiple rollers are evenly arranged on the surface of the limiting ring, which can make the contact points between the limiting ring and the inner wall of the outer tube evenly distributed, avoiding excessive local contact pressure that could cause wear on the inner wall of the outer tube or damage to the rollers. Furthermore, the evenly distributed rollers can guide the limiting ring to drive the inner tube to move smoothly along the axis of the outer tube. The two fixed rings are symmetrically arranged so that after the hooks are connected, the traction force is symmetrically applied to both sides of the limiting ring, preventing the limiting ring from tilting due to uneven force.

[0017] Preferably, the outer tube is sleeved on the surface of the limiting ring and the inner tube, and the roller overlaps the inner wall of the outer tube.

[0018] By adopting the above technical solution, the roller on the limiting ring overlaps the inner wall of the outer tube, which enables the roller to roll along the inner wall of the outer tube. The outer tube guides the roller, ensuring that the inner tube always moves along the axis of the outer tube during the traction process, thus avoiding pipe opening deformation or pipe wall scraping caused by the inner tube deflection.

[0019] Preferably, the two sets of jacks are arranged in a rectangular shape on the upper surface of the movable plate, and the two sets of moving wheels are symmetrically arranged on the lower surface of the movable plate.

[0020] By adopting the above technical solution, the two sets of jacks can make the force distribution of the placement groove even, which can stably support inner tubes of different diameters, prevent the placement groove from tilting due to uneven force and causing the inner tube to slip, and improve the support stability. The two sets of moving wheels can balance the force on the movable plate, making it less likely to tip over when moving, and the mechanism can be easily pushed to adjust the support position.

[0021] In summary, this application includes at least one of the following beneficial technical effects: This pipe-sliding traction structure, through the setting of a limiting mechanism, allows the double-ended screw to be rotated by a knob, enabling the nut to drive the anti-slip pad inside the limiting ring to tightly adhere to the pipe surface via a fixing block. This facilitates the fixed installation of the limiting ring on pipes of different diameters. Furthermore, with the assistance of rollers, the sliding friction between the inner and outer pipes is converted into rolling friction, thus preventing wear on the anti-corrosion structure of the pipe surface during traction. The moving mechanism, with the action of a jack, allows for adjustment of the height of the placement groove, facilitating support for pipes of different diameters. It can quickly compensate for height deviations between the inner and outer pipes, and the two sets of moving wheels under the movable plate allow for flexible movement of the mechanism, facilitating adjustments to the support position according to the construction progress, thereby improving construction efficiency and support stability. Attached Figure Description

[0022] Figure 1 This is a structural schematic diagram of the frontal cross-section of this application; Figure 2 This utility model Figure 1 Enlarged structural diagram at point A; Figure 3 This is a top-view three-dimensional structural diagram of the limiting mechanism in this application; Figure 4 This is a side view of the structure of the mobile mechanism in this application; Figure 5 This is a side view of the traction mechanism in this application.

[0023] In the picture: 1. Limiting mechanism; 2. Moving mechanism; 3. Traction mechanism; 4. Outer tube; 5. Inner tube; 101. Limiting ring; 102. Fixing block; 103. Nut; 104. Two-way lead screw; 105. Knob; 106. Anti-slip pad; 107. Roller; 108. Fixing ring; 201. Movable plate; 202. Jack; 203. Placement slot; 204. Moving wheel; 301. Fixed platform; 302. Support plate; 303. Rotating shaft; 304. Take-up roller; 305. Servo motor; 306. Driving wheel; 307. Transmission belt; 308. Driven wheel; 309. Traction rope; 310. Connecting rope; 311. Hook. Detailed Implementation

[0024] The following is in conjunction with the appendix Figure 1 -Appendix Figure 5 This application will be described in further detail below.

[0025] Example 1: A tube-sliding traction structure, referring to Figure 1 , Figure 3 and Figure 4 The system includes a limiting mechanism 1, a moving mechanism 2, and a traction mechanism 3. The limiting mechanism 1 includes a limiting ring 101, with two fixing blocks 102 fixedly connected to the top of the limiting ring 101. Nuts 103 are fixedly connected to the top of each of the two fixing blocks 102. A two-way lead screw 104 is threaded into the interior of each nut 103. Multiple rollers 107 are fixedly connected to the outer surface of the limiting ring 101, and an anti-slip pad 106 is fixedly connected inside the limiting ring 101. By setting the limiting mechanism 1, simply rotating the two-way lead screw 104 via the knob 105 allows the nut 103 to drive the anti-slip pad 106 inside the limiting ring 101 to tightly adhere to the surface of the pipe through the fixing blocks 102. This facilitates the fixed installation of the limiting ring 101 on pipes of different diameters. Furthermore, with the cooperation of the rollers 107, the sliding friction between the inner pipe 5 and the outer pipe 4 is converted into rolling friction, preventing excessive traction. During the process, the anti-corrosion structure on the surface of the pipeline is worn. Two fixed rings 108 are fixedly connected to the surface of the limiting ring 101. An inner tube 5 is inserted inside the limiting ring 101. The moving mechanism 2 includes a movable plate 201. Two sets of jacks 202 are fixedly connected to the upper surface of the movable plate 201. A placement groove 203 is fixedly connected to the top of the two sets of jacks 202. One end of the inner tube 5 overlaps the upper surface of the placement groove 203. Two sets of moving wheels 204 are fixedly connected to the lower surface of the movable plate 201. By setting the moving mechanism 2, the height of the placement groove 203 can be adjusted under the action of the jacks 202, which is convenient for supporting pipelines of different diameters. It can quickly compensate for the height deviation between the inner tube 5 pressure plate and the outer tube 4. Furthermore, the two sets of moving wheels 204 under the movable plate 201 allow the mechanism to be moved flexibly, which is convenient for adjusting the support position according to the construction progress, thereby improving construction efficiency and support stability.

[0026] Please see Figure 1 , Figure 3 and Figure 5The traction mechanism 3 includes a fixed platform 301. Two support plates 302 are fixedly connected to the upper surface of the fixed platform 301. A rotating shaft 303 is rotatably connected to the support plates 302 via bearings. A winding roller 304 is fixedly connected to the surface of the rotating shaft 303, and a traction rope 309 is wound around the surface of the winding roller 304. A servo motor 305 is fixedly connected to the upper surface of the fixed platform 301. By simply activating the servo motor 305 via an external control switch, the rotating shaft 303 can drive the winding roller 304 to wind the traction rope 309, thus enabling the movement of the inner tube 5. It provides traction force, with a more stable power output compared to manual traction. Furthermore, the speed of the servo motor 305 can be adjusted via an external control switch to adapt to different traction needs, improving the controllability and reliability of the traction process. The output shaft of the servo motor 305 is fixedly connected to a drive wheel 306, and a transmission belt 307 is sleeved on the surface of the drive wheel 306. One end of the rotating shaft 303 is fixedly connected to a driven wheel 308. The drive wheel 306 and the driven wheel 308 are connected by the transmission belt 307. The drive wheel 306, transmission belt 307, and driven wheel... With the cooperation of 308, the power of the servo motor 305 can be stably transmitted to the rotating shaft 303. The transmission belt 307 can buffer the instantaneous impact force when the motor starts, avoiding mechanical damage to the rotating shaft 303 due to sudden force. The cooperation between the driving wheel 306 and the driven wheel 308 can ensure stable speed, so that the winding roller 304 winds the traction rope 309 at a uniform speed, thereby ensuring that the inner tube 5 moves at a uniform speed along the outer tube 4. One end of the traction rope 309 is fixedly connected to the surface of the winding roller 304, and the other end of the traction rope 309 is fixedly connected to a connecting rope. 310. Both ends of the connecting rope 310 are fixedly connected to hooks 311. The hooks 311 and the fixing rings 108 are matched. With the cooperation of the hooks 311 and the fixing rings 108, quick connection and disassembly can be achieved. Connection and disassembly can be completed without professional tools, shortening the construction connection time. The two hooks 311 are respectively hooked to the symmetrical fixing rings 108, so that the traction force is evenly transmitted to the limiting ring 101 through the fixing rings 108, avoiding the limiting ring 101 from tilting due to unilateral force, and ensuring that the inner tube 5 always moves along the axis of the outer tube 4 during the traction process.

[0027] Please see Figure 1 , Figure 2 and Figure 3Both ends of the bidirectional lead screw 104 are fixedly connected to knobs 105. The surfaces of both knobs 105 are textured with anti-slip patterns. Anti-slip pads 106 are made of rubber. The textured surfaces of the knobs 105 increase the friction coefficient between the operator's hand and the knobs 105, allowing for easy rotation of the lead screw without tools and quick adjustment of the clamping tightness of the limit ring 101. The rubber anti-slip pads 106 combine elasticity and high friction, ensuring close contact with the surface of the inner tube 5 to enhance clamping stability and prevent slippage. They also provide elastic cushioning to avoid squeezing damage to the thin-walled inner tube 5 caused by rigid clamping. Multiple rollers 107... The two fixed rings 108 are symmetrically arranged on the surface of the limiting ring 101, and the multiple rollers 107 are evenly arranged on the surface of the limiting ring 101. This ensures that the contact points between the limiting ring 101 and the inner wall of the outer tube 4 are evenly distributed, avoiding excessive local contact pressure that could cause wear on the inner wall of the outer tube 4 or damage to the rollers 107. Furthermore, the evenly distributed rollers 107 can guide the limiting ring 101 to drive the inner tube 5 to move smoothly along the axis of the outer tube 4. The symmetrical arrangement of the two fixed rings 108 ensures that after the hook 311 is connected, the traction force is symmetrically applied to both sides of the limiting ring 101, preventing the limiting ring 101 from tilting due to uneven force.

[0028] Please see Figure 1 , Figure 3 and Figure 4 An outer tube 4 is sleeved on the surface of the limiting ring 101 and the inner tube 5. A roller 107 overlaps the inner wall of the outer tube 4. The roller 107 on the limiting ring 101 overlaps the inner wall of the outer tube 4, which allows the roller 107 to roll along the inner wall of the outer tube 4. The outer tube 4 guides the roller 107, ensuring that the inner tube 5 always moves along the axis of the outer tube 4 during the traction process, avoiding tube deformation or tube wall scraping caused by the deviation of the inner tube 5. Two sets of jacks 202 are arranged in a rectangle on the upper surface of the movable plate 201, and two sets of moving wheels 204 are symmetrically arranged on the lower surface of the movable plate 201. The two sets of jacks 202 can make the force distribution of the placement groove 203 even, and can stably support inner tubes 5 of different diameters, preventing the placement groove 203 from tilting due to uneven force and causing the inner tube 5 to slip, thus improving the support stability. The two sets of moving wheels 204 can balance the force on the movable plate 201, making it less likely to tip over when moving, and can easily push the mechanism to adjust the support position.

[0029] The implementation principle of this application embodiment is as follows: First, the outer tube 4 is fixed on the preset construction path. Then, the moving mechanism 2 is pushed to a suitable position at one end of the outer tube 4. Then, the limiting ring 101 is placed on the inner tube 5 near the opening of the outer tube 4. The operator drives the bidirectional screw 104 to rotate through the knob 105, so that the nut 103 drives the limiting ring 101 to retract through the fixing block 102, thereby clamping the limiting ring 101 on the surface of the inner tube 5. Then, the inner tube 5 and the limiting ring 101 are moved into the interior of the outer tube 4 by an external conveying device, so that the roller 107 on the surface of the limiting ring 101 contacts the inner wall of the outer tube 4. Then, the end of the inner tube 5 away from the outer tube 4 is placed inside the placement groove 203, and the height of the placement groove 203 is adjusted by adjusting the two sets of jacks 202, so that the placement groove... 203 supports the inner tube 5, and then the two hooks 311 at both ends of the connecting rope 310 are respectively hung on the two fixed rings 108 of the limiting ring 101. The servo motor 305 is started by the external control switch. At the same time, the output shaft of the servo motor 305 drives the drive wheel 306 to rotate. Then, the driven wheel 308 and the rotating shaft 303 are driven to rotate by the transmission belt 307. At the same time, the rotating shaft 303 winds the traction rope 309 by the winding roller 304. The hooks 311 drive the inner tube 5 inside the limiting ring 101 to move along the outer tube 4 through the fixed rings 108, so that the roller 107 rolls along the inner wall of the outer tube 4. When the inner tube 5 is pulled to the preset position, the servo motor 305 is turned off by the external control switch. Then the hooks 311 are disassembled from the limiting ring 101, thus completing the construction process of pipe pulling.

Claims

1. A tube-sliding traction structure, comprising a limiting mechanism (1), a moving mechanism (2), and a traction mechanism (3), characterized in that: The limiting mechanism (1) includes a limiting ring (101), with two fixing blocks (102) fixedly connected to the top of the limiting ring (101), and nuts (103) fixedly connected to the top of each of the two fixing blocks (102). A two-way lead screw (104) is threaded into the inner surface of the two nuts (103). Multiple rollers (107) are fixedly connected to the outer surface of the limiting ring (101). An anti-slip pad (106) is fixedly connected to the inside of the limiting ring (101). Two fixing rings (108) are fixedly connected to the surface of the limiting ring (101). An inner tube (5) passes through the inside of the limiting ring (101). The moving mechanism (2) includes a movable plate (201), on the upper surface of the movable plate (201) are fixedly connected two sets of jacks (202), and the top ends of the two sets of jacks (202) are fixedly connected to a placement groove (203). One end of the inner tube (5) overlaps the upper surface of the placement groove (203), and the lower surface of the movable plate (201) is fixedly connected to two sets of moving wheels (204).

2. The tube-sliding traction structure according to claim 1, characterized in that: The traction mechanism (3) includes a fixed platform (301), on which two support plates (302) are fixedly connected. The support plates (302) are rotatably connected to a rotating shaft (303) via bearings. A take-up roller (304) is fixedly connected to the surface of the rotating shaft (303). A traction rope (309) is wound around the surface of the take-up roller (304). A servo motor (305) is fixedly connected to the upper surface of the fixed platform (301).

3. The tube-sliding traction structure according to claim 2, characterized in that: The output shaft of the servo motor (305) is fixedly connected to a drive wheel (306), and a transmission belt (307) is sleeved on the surface of the drive wheel (306). One end of the rotating shaft (303) is fixedly connected to a driven wheel (308), and the drive wheel (306) and the driven wheel (308) are connected by transmission belt (307).

4. The tube-sliding traction structure according to claim 2, characterized in that: One end of the traction rope (309) is fixedly connected to the surface of the take-up roller (304), and the other end of the traction rope (309) is fixedly connected to a connecting rope (310). Both ends of the connecting rope (310) are fixedly connected to hooks (311), and the hooks (311) and the fixing rings (108) are matched.

5. The tube-sliding traction structure according to claim 1, characterized in that: Both ends of the bidirectional lead screw (104) are fixedly connected to knobs (105), and the surfaces of the two knobs (105) are provided with anti-slip textures. The anti-slip pad (106) is made of rubber material.

6. The tube-sliding traction structure according to claim 1, characterized in that: Multiple rollers (107) are evenly arranged on the surface of the limiting ring (101), and two fixing rings (108) are symmetrically arranged on the surface of the limiting ring (101).

7. The tube-sliding traction structure according to claim 1, characterized in that: The outer tube (4) is sleeved on the surface of the limiting ring (101) and the inner tube (5), and the roller (107) overlaps on the inner wall of the outer tube (4).

8. The tube-sliding traction structure according to claim 1, characterized in that: The two sets of jacks (202) are arranged in a rectangular shape on the upper surface of the movable plate (201), and the two sets of moving wheels (204) are symmetrically arranged on the lower surface of the movable plate (201).

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