A multi-functional integrated pipe handling device for horizontal directional drilling construction

Abstract

The application discloses a multifunctional integrated pipeline operation device for horizontal directional drilling construction, which comprises a base plate, an advancing direction roller set, a rotating direction roller set, a scissor type lifting mechanism, a first transmission device, a second transmission device and a driving device, the advancing direction roller set is fixedly installed on the middle part of the upper end of the base plate, the advancing direction roller set is in transmission connection with the driving device through the first transmission device, the scissor type lifting mechanisms are respectively fixedly installed on the base plates on the two sides of the advancing direction roller set, the rotating direction roller set is fixedly installed on the upper end of the scissor type lifting mechanism, the rotating direction roller set is in transmission connection with the driving device through the second transmission device, and the driving device is fixedly installed on the upper end of the base plate. In view of the above-mentioned defects existing in the prior art, the application aims at providing a multifunctional integrated pipeline operation device with high structural integration degree, convenient working condition switching, high adjustment precision and high construction safety.

Description

Technical Field

[0001] This invention relates to the field of pipeline construction technology, specifically a multi-functional integrated pipeline operation device for horizontal directional drilling. Background Technology

[0002] Horizontal directional drilling (HDD) trenchless construction technology, with its outstanding advantages such as no surface excavation, minimal soil disturbance, high construction efficiency, and controllable pipeline laying accuracy, has been widely applied to various underground pipeline laying projects, including municipal water supply and drainage, gas transmission, power and communication, and long-distance oil and gas transmission. It is currently the mainstream technology for urban underground pipeline network renovation and obstacle-crossing pipeline construction. Among them, pipeline assembly welding and overall pipeline pullback are two key processes in HDD construction. Their construction accuracy, operation efficiency, and safety stability directly determine the overall project construction cycle, pipeline forming quality, and construction cost, and have a significant impact on the long-term safe operation performance of the pipeline.

[0003] Currently, in existing horizontal directional drilling pipeline construction processes, traditional auxiliary construction methods are still widely used for pipeline assembly welding and pipe pullback operations. These methods suffer from low integration and limited automation of auxiliary equipment, resulting in numerous inherent technical defects. In the pipeline assembly welding process, the industry's conventional approach relies on multiple cranes to suspend and support the pipeline at multiple points. Welding can only commence after manual alignment and leveling. Because the pipeline is suspended, its support rigidity is weak and its posture stability is poor. While welding conditions are good for the upper and side sections of the pipeline, the bottom weld can only be completed using overhead welding. Overhead welding is difficult to perform, highly dependent on operator skills, and the weld pool is difficult to control stably, easily leading to quality defects such as porosity, slag inclusions, incomplete penetration, and welding cracks. This results in poor weld consistency and a high rework rate, significantly reducing pipeline welding efficiency while increasing welding material consumption and labor costs, making it difficult to meet the construction and acceptance requirements of high-precision, high-reliability pipeline projects.

[0004] In the pipeline pullback construction process, the existing technology also relies on multiple cranes to suspend the integrally formed pipeline in coordination with a horizontal directional drilling rig to complete the pipeline entry and pullback operation. This operation mode has obvious drawbacks: First, the large number of cranes involved in the coordinated operation results in high machine shift costs, significantly increasing the project cost. Moreover, the large lifting equipment requires a large operating space and has strict requirements on the construction site conditions, making it difficult to adapt to restricted and complex construction scenarios such as narrow urban work areas and near riverbanks. Second, the synchronous control of multiple cranes is difficult, and the lifting and moving movements of each lifting device are difficult to coordinate precisely. During the pipeline suspension process, tilting, swaying, and uneven stress are prone to occur, which can easily lead to pipeline collisions, damage to the outer anti-corrosion layer, and misalignment of the pipe ends. Under extreme working conditions, there is a high risk of equipment overturning and pipeline falling, making construction safety management very difficult.

[0005] Meanwhile, existing pipeline construction auxiliary equipment has limited functionality and poor adaptability to different operating conditions. Functions such as pipeline posture correction, fixed-point support, axial conveying, and pullback assistance are independent and lack integrated structural support, making it impossible to quickly switch between welding and pullback modes. Under the traditional operating system, the lack of a pipeline adaptive rotation mechanism during the welding stage makes it impossible to convert high-difficulty overhead welding operations into flat welding operations. Under conditions such as pipeline placement deviations and uneven pipe wall thickness, it is difficult to autonomously correct the posture, which can easily lead to uneven heating of the pipeline welding and large dispersion in weld formation quality. In the pullback stage, there is no dedicated adaptive support and conveying structure. The frictional resistance during the pipeline pullback process is uncontrollable, which can easily lead to problems such as travel jamming, trajectory deviation, and local overload, directly affecting the accuracy of pipeline pullback and the success rate of construction.

[0006] Furthermore, existing conventional auxiliary equipment has a fixed structure and poor adjustability, making it difficult to adapt to the construction needs of pipelines with different diameters and lengths. This results in low equipment reuse rates and high costs associated with repeated project investments. Traditional equipment generally lacks integrated transmission and adaptive adjustment mechanisms, making it prone to transmission jamming, power disconnection, and meshing misalignment when adjusting support height and clamping spacing. This leads to poor equipment stability, a high failure rate, and high maintenance costs. Simultaneously, traditional construction methods heavily rely on manual operation and large machinery, resulting in high fossil fuel consumption and carbon emissions, which contradicts the industry's green and low-carbon development direction. The excessive reliance on manual intervention also leads to low levels of standardization and automation, making it difficult to meet the current development needs of refined, large-scale, and standardized horizontal directional drilling. Summary of the Invention

[0007] In view of the above-mentioned shortcomings in the existing technology, the purpose of this invention is to provide a multi-functional integrated pipeline operation device with high structural integration, convenient switching of working conditions, high adjustment accuracy and strong construction safety.

[0008] The technical solution adopted by the present invention to achieve the above objectives is: a multi-functional integrated pipeline operation device for horizontal directional drilling, comprising a base plate, a forward roller assembly, a rotation roller assembly, a scissor lift mechanism, a first transmission device, a second transmission device, and a drive device. The forward roller assembly is fixedly installed in the middle of the upper part of the base plate. The forward roller assembly is connected to the drive device through the first transmission device. Scissor lift mechanisms are fixedly installed on the base plates on both sides of the forward roller assembly. The rotation roller assembly is fixedly installed at the upper end of the scissor lift mechanism. The rotation roller assembly is connected to the drive device through the second transmission device. The drive device is fixedly installed in the upper part of the base plate.

[0009] In the above technical solution, the forward direction roller group includes a mounting base and a first rolling wheel. The mounting base is fixedly connected to the middle of the upper end of the base plate. The upper end of the mounting base is provided with two sets of symmetrical rotating grooves. The first rolling wheel is rotatably connected in each of the rotating grooves. The rotating shaft of the first rolling wheel passes through the mounting base and is connected to the first transmission device for transmission.

[0010] In the above technical solution, the rotation axis of the two sets of first rolling wheels is at an angle of 15°-30° with the horizontal plane.

[0011] In the above technical solution, the scissor lift mechanism includes a fixed base, a rotating shaft block, a first rotating rod, a second rotating rod, a slide rail, a slide block, a rotating shaft, a threaded block, a first bidirectional lead screw, a sliding rail, a sliding block, and a first transmission box. The fixed base is fixedly connected to the base plates on both sides of the forward roller assembly. The upper end of the fixed base is rotatably connected to the first bidirectional lead screw. One end of the first bidirectional lead screw passes through the fixed base and is connected to the first transmission box. The two sets of first transmission boxes are connected to each other via a first rotating shaft. The two ends of the first bidirectional lead screw are threadedly connected to threaded blocks, and the two ends of the threaded blocks are fixedly connected to... The device includes a rotating shaft, with a sliding block fixedly connected to the other end of each shaft. The sliding blocks are slidably connected within a sliding rail, which is fixedly connected to a fixed base. A first rotating rod is rotatably connected to the rotating shaft on both sides of the threaded block. The other end of each first rotating rod is rotatably connected to the lower end of the rotation direction roller assembly. A second rotating rod is rotatably connected to the middle of each first rotating rod. One end of each second rotating rod is rotatably connected to both sides of the rotating shaft block, and the other end is rotatably connected to both sides of a sliding block. The sliding blocks are slidably connected to a sliding rail, which is fixedly connected to the bottom of the rotation direction roller assembly.

[0012] In the above technical solution, the rotating direction roller assembly includes a slide seat, guide rails, a second bidirectional lead screw, roller frames, and second rolling wheels. The lower end of the slide seat is fixedly installed with a scissor-type lifting mechanism. The upper end of the slide seat has an installation groove. Two sets of symmetrical guide rails are fixedly connected in the installation groove. The second bidirectional lead screw is rotatably connected in the installation groove between the guide rails. One end of the second bidirectional lead screw passes through the slide seat and is connected to a second transmission box. The second transmission boxes are connected to each other through a second rotating shaft. Roller frames are threaded onto the two ends of the threads of the second bidirectional lead screw. Guide grooves are opened at the lower end of the roller frames. The guide rails are slidably connected in the guide grooves. The upper end of the roller frames is rotatably connected to a second rolling wheel. The rotating shaft of the second rolling wheel passes through the roller frame and is connected to a second transmission device.

[0013] In the above technical solution, the first transmission box and the second transmission box have the same structure, both including a box structure, a first worm gear, a first worm, a handle operating block, and a ratchet wrench. The box structure is fixedly connected to one end of a fixed seat or a sliding seat. One end of the first double-acting screw and the second double-acting screw passes through the box structure and is fixedly connected to the first worm gear. One side of the first worm gear is meshed with the first worm. The first worm gear and the first worm are rotatably connected inside the box structure. The first worm in the first transmission box passes through the box structure and is fixedly connected to the first rotating shaft. The first worm in the second transmission box passes through the box structure and is fixedly connected to the second rotating shaft. The first worm passes through the box structure and is fixedly connected to the handle operating block. A ratchet wrench is connected to the sliding sleeve on the handle operating block.

[0014] In the above technical solution, the first transmission device includes a second worm gear, a first bevel gear, and a second bevel gear. A transmission cavity is provided in the middle of the mounting base. The shaft of the first rolling wheel passes through the transmission cavity and is fixedly connected to the first bevel gear. The first bevel gear is meshed with the second bevel gear. The second bevel gear is fixedly connected to both ends of the first transmission shaft. The second worm gear is fixedly connected in the middle of the first transmission shaft. The second worm gear is connected to the driving device in a transmission connection.

[0015] In the above technical solution, the second transmission device includes a first splined shaft, a second splined shaft, a third worm gear, a third worm, a first support plate, a second support plate, a fourth worm gear, a fourth worm, a support frame, a mounting frame, a third bevel gear, a fourth bevel gear, a fifth worm gear, and a second transmission shaft. The rotating shaft of the second rolling wheel passes through the roller frame and is fixedly connected to the third worm gear. The third worm gear and the third worm are meshed together. Both ends of the third worm are rotatably connected to the first support plate. One end of the first support plate is fixedly connected to one side of the roller frame. A splined sleeve hole is formed through the center of the third worm. A first splined shaft is slidably connected inside the splined sleeve hole. Both ends of the first splined shaft are rotatably connected to both ends of the sliding groove seat. A fourth worm gear is fixedly connected to both ends of the first splined shaft. The fourth worm gear is meshed with the fourth worm, which is rotatably connected to the support frame. The support frame is fixedly connected to both ends of the slide seat. A splined guide hole is formed through the center of the fourth worm. A second splined shaft is rotatably connected to the splined guide hole and is fixedly connected to the upper end of the base plate. A third bevel gear is fixedly connected to one end of the second splined shaft. The third bevel gear meshes with the fourth bevel gear. The fourth bevel gear is fixedly connected to both ends of the second transmission shaft. The second transmission shaft is rotatably connected to the second support plate and is fixedly connected to the upper end of the base plate. A fifth worm gear is fixedly connected to the middle of the second transmission shaft and is connected to the drive device.

[0016] In the above technical solution, the driving device includes a drive motor, a motor bracket, a drive shaft, a second worm, a fifth worm, and a third support plate. The motor bracket is fixedly connected to one edge of the base plate, and the drive motor is fixedly connected to the upper end of the motor bracket. The drive shaft is fixedly connected to the end of the shaft of the drive motor. Several third support plates are rotatably connected to the drive shaft, and the third support plates are respectively fixedly connected to the base plate. The drive shaft is rotatably connected through the middle of the drive shaft in the transmission cavity. The second worm is fixedly connected to the drive shaft in the transmission cavity. The second worm and the second worm wheel are meshed with each other. Fifth worms are fixedly connected to both ends of the drive shaft, and the fifth worms are meshed with each other.

[0017] The beneficial effects of this invention are: 1. This invention adopts a highly integrated structural design, integrating pipeline forward conveying, circumferential rotation, and height adjustment functions into one unit, abandoning the traditional model of fragmented functions and separate operations. The device can quickly switch between welding and pullback construction modes, has a compact structure, strong site adaptability, effectively simplifies on-site construction processes, reduces investment in auxiliary equipment, and significantly improves the overall integration and automation level of horizontal directional drilling pipeline construction.

[0018] 2. This invention features a staggered structure between a liftable rotating roller assembly and a fixed forward roller assembly, allowing for switching of the pipeline support method according to construction needs. During welding, it can drive the pipeline to rotate smoothly, transforming traditional overhead welding into flat welding, avoiding welding defects caused by overhead welding, consistently improving the quality of pipeline weld formation, reducing welding difficulty, and effectively enhancing the standardization and reliability of pipeline welding construction.

[0019] 3. This invention utilizes a scissor-type lifting mechanism combined with a bidirectional screw adjustment structure to achieve adaptive and precise adjustment of the support height and clamping distance, making it suitable for pipeline construction operations with various pipe diameters. The overall adjustment process is smooth and precise, possessing excellent mechanical self-locking performance, effectively ensuring the stability of the pipeline support state, preventing pipeline displacement and shaking during construction, and improving construction alignment accuracy.

[0020] 4. This invention adopts an integrated power transmission structure. A single drive unit can simultaneously provide power for pipeline forward conveying and rotation operations. Combined with a multi-stage worm gear and bevel gear transmission system, it offers stable transmission, low power loss, and good synchronization. It also features a manual adjustment structure, adaptable to both electric automatic operation and manual fine-tuning modes, providing a wide range of working conditions and enhanced equipment stability and fault tolerance.

[0021] 5. This invention completely replaces the traditional multi-crane coordinated suspension operation method in construction, eliminating the need for on-site investment in large lifting equipment, simplifying on-site construction organization and collaborative management processes, and avoiding safety hazards such as overturning and collisions caused by multi-crane lifting. It effectively reduces on-site construction land occupation and equipment operation and maintenance costs, reduces energy consumption, and meets the needs of green and low-carbon construction development. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the left-side stereoscopic structure of the present invention; Figure 2 This is a schematic diagram of the right-side stereoscopic structure of the present invention; Figure 3 This is a schematic cross-sectional view of the forward direction roller assembly of the present invention; Figure 4 for Figure 3 Detailed structural diagram of part A1 in the middle; Figure 5 This is a schematic diagram of the scissor lift mechanism of the present invention; Figure 6 This is a schematic diagram of the rotating direction roller assembly structure of the present invention; Figure 7 This is a schematic diagram of the cross-sectional connection structure of the box structure of the present invention; Figure 8 This is a schematic diagram of the connection structure of the drive device of the present invention.

[0023] In the diagram: 1. Base plate; 2. Forward roller assembly; 3. Rotation roller assembly; 4. Scissor lift mechanism; 5. First transmission device; 6. Second transmission device; 7. Drive device; 101. Mounting seat; 102. First rolling wheel; 103. Rotating groove; 201. Fixed seat; 202. Rotating shaft block; 203. First rotating rod; 204. Second rotating rod; 205. Slide rail; 206. Slide block; 207. Rotating shaft; 208. Threaded block; 209. First double-acting lead screw; 210. Sliding rail; 211. Sliding block; 212. First transmission box; 213. First rotating shaft; 301. Slide seat; 302. Guide rail; 303. Second double-acting lead screw; 304. Roller frame; 305. Second rolling wheel; 306. Mounting groove; 307. Second transmission box; 308. Second rotating shaft. 401 Housing structure, 402 First worm gear, 403 First worm, 404 Handle operating block, 405 Ratchet wrench, 501 Second worm gear, 502 First bevel gear, 503 Second bevel gear, 504 Transmission cavity, 505 First transmission shaft, 601 First spline shaft, 602 Second spline shaft, 603 Third worm gear, 604 Third worm, 605 First support plate, 606 Second support plate, 607 Fourth worm gear, 608 Fourth worm, 609 Support frame, 610 Mounting bracket, 611 Third bevel gear, 612 Fourth bevel gear, 613 Fifth worm gear, 614 Second transmission shaft, 701 Drive motor, 702 Motor bracket, 703 Drive shaft, 704 Second worm, 705 Fifth worm, 706 Third support plate. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Please see Figure 1-8 This invention relates to a multi-functional integrated pipeline operation device for horizontal directional drilling (HDD) construction. It is primarily used in trenchless HDD applications for water conservancy, gas, and power pipelines. The device is designed to support two core construction scenarios: pipeline assembly welding and overall pipeline pullback. It addresses industry pain points such as the reliance on multiple cranes for collaborative operations, the difficulty of overhead welding, poor welding quality, high construction costs, numerous safety hazards, and high carbon emissions associated with traditional methods. Through integrated mechanical structure design, the invention integrates axial pipeline transport, adaptive vertical height adjustment, and circumferential pipeline rotation functions, enabling rapid switching between welding and pullback operations. This eliminates the need for crane assistance, significantly improving construction safety and efficiency while reducing costs.

[0026] The overall structure of this invention includes a base plate 1, a forward roller assembly 2, a rotational roller assembly 3, a scissor lift mechanism 4, a first transmission device 5, a second transmission device 6, and a drive device 7. The base plate 1 serves as the integral load-bearing base, with all functional mechanisms integrated and installed on its upper end, resulting in a compact structure and strong site adaptability. The forward roller assembly 2 is the core load-bearing and conveying structure for backhauling operations, enabling unobstructed axial sliding and power transmission of the pipeline. The rotational roller assembly 3, in conjunction with the scissor lift mechanism 4, provides height adjustment, offering rotational support for pipeline welding operations. The scissor lift mechanism 4 serves as the core execution structure for switching operating conditions, precisely controlling the lifting height of the rotational roller assembly 3. The supporting first transmission device 5, second transmission device 6, and drive device 7 constitute an integrated power system, providing stable power for axial movement and circumferential rotation of the pipeline, respectively, meeting the requirements for automated dual-condition operation.

[0027] The base plate 1 is made of high-strength low-alloy steel plate, which is cut and welded as a whole. The plate surface is flat and polished and treated with anti-rust and anti-corrosion. The bottom is a flat structure, which can be directly and stably laid on the ground of the construction site without the need for additional foundation pouring. It has a strong site adaptability. The base plate 1 has high overall rigidity and excellent load-bearing capacity. It can stably bear the self-weight load of large-diameter and long-distance pipelines, and eliminate problems such as plate surface deformation and mechanism displacement during operation. At the same time, the base plate 1 has reserved standardized installation positions for fixing components such as forward direction roller group 2, scissor lifting mechanism 4, and drive device 7, ensuring the assembly accuracy of each mechanism and providing a basic guarantee for the stable operation of the device.

[0028] Please see Figure 3 The forward direction roller group 2 is fixedly installed at the middle of the upper end of the base plate 1. It is the core support and conveying component in the pipeline pullback operation. It mainly includes the mounting seat 101 and the first rolling wheel 102. The mounting seat 101 is fixed to the middle of the base plate 1 by high-strength bolts and welding. It adopts an integrated cast steel structure with high structural strength and is not easily deformed. The upper end of the mounting seat 101 is symmetrically provided with two sets of oppositely arranged rotating grooves 103. The two sets of rotating grooves 103 are arranged obliquely and symmetrically. The first rolling wheel 102 is rotatably assembled in the grooves respectively. The first rolling wheel 102 adopts a composite structure with a metal wheel core and a wear-resistant rubber outer layer. The rubber outer layer has the characteristics of anti-slip, shock absorption and anti-pipe scratch, which not only ensures the load-bearing strength, but also effectively protects the anti-corrosion layer of the pipe outer wall. The rotation axis of the two sets of first rolling wheels 102 is limited to an angle of 15°-30° with the horizontal plane, preferably 20°. This angle allows the two sets of rollers to form a central clamping support structure, accurately adapt to the curvature of the outer wall of the circular pipe, and automatically center and position the pipe, completely solving the problem of left and right deviation and running off course during the pipe pullback process. Please see Figure 4The mounting base 101 is equipped with a sealed transmission cavity 504. The inner end of the axle of the first rolling wheel 102 extends into the transmission cavity 504 and is connected to the first transmission device 5. Power is transmitted through the first transmission device 5 to realize the synchronous and uniform rotation of the first rolling wheel 102, thereby driving the pipeline to move smoothly along the axial direction to meet the needs of pipeline pullback and pushing construction.

[0029] Please see Figure 4 The first transmission device 5 is arranged in the sealed transmission cavity 504 of the mounting base 101. It consists of a second worm gear 501, a first bevel gear 502, a second bevel gear 503, and a first transmission shaft 505. It provides precise transmission power to the forward direction roller group 2. The inner ends of the axles of the two sets of first rolling wheels 102 are fixedly equipped with first bevel gears 502. The two sets of first bevel gears 502 are symmetrically arranged and mesh with the corresponding second bevel gears 503 respectively. The two sets of second bevel gears 503 are fixedly installed at the left and right ends of the first transmission shaft 505 to realize the synchronous linkage between the transmission shaft and the two sets of rollers. The first drive shaft 505 is horizontally mounted inside the transmission cavity 504 and can rotate freely and smoothly. The second worm gear 501 is fixedly mounted in the middle. The second worm gear 501 meshes with the second worm 704 of the drive device 7. During operation, the drive motor 701 outputs power to drive the drive shaft 703 to rotate. The second worm 704 on the drive shaft 703 rotates synchronously. The second worm gear 704 is driven to rotate through the meshing transmission of the worm gear and worm wheel, which in turn drives the first drive shaft 505 to rotate. The first drive shaft 505 drives the two sets of first rolling wheels 102 to rotate synchronously, in the same direction, and at the same speed through the meshing transmission of the bevel gears at both ends. Relying on the static friction between the rollers and the outer wall of the pipe, the pipe is driven to move forward or backward along the axial direction. This transmission structure adopts a combination of worm gear and bevel gear transmission, which has a constant transmission ratio, low power loss, and mechanical self-locking characteristics. It can accurately control the start and stop of pipeline transportation and the transportation distance, avoid pipeline inertial slippage, and greatly improve the accuracy of backhauling operations.

[0030] Please see Figure 5Two sets of identical scissor-type lifting mechanisms 4 are symmetrically arranged on the left and right sides of the forward roller group 2. The two sets of mechanisms lift and lower synchronously, which is the core execution structure for switching between welding and back-pulling conditions in this invention. Each set of scissor-type lifting mechanisms 4 includes a fixed base 201, a rotating shaft block 202, a first rotating rod 203, a second rotating rod 204, a slide rail 205, a slide block 206, a rotating shaft rod 207, a threaded block 208, a first bidirectional lead screw 209, a sliding rail 210, a sliding block 211, and a first transmission box 212; the fixed base 201 is fixedly welded to... The upper end of the base plate 1 and both sides of the forward roller group 2 serve as the fixed base of the lifting mechanism. The upper end of the fixed seat 201 is horizontally rotatably mounted with the first bidirectional lead screw 209. The first bidirectional lead screw 209 is a bidirectional lead screw with positive and negative threads. The two ends of the screw body have opposite threads. The outer end of the first bidirectional lead screw 209 passes through the fixed seat 201 and is connected to the first transmission box 212. The first transmission boxes 212 of the left and right lifting mechanisms are linked through the first rotating shaft 213 to ensure that the two sets of bidirectional lead screws rotate synchronously, ensuring that the lifting height on both sides is completely consistent, and avoiding pipe tilting and uneven force. The first bidirectional lead screw 209 has two reverse threads on which threaded blocks 208 are respectively threaded. When the lead screw rotates, it can drive the two threaded blocks 208 to move horizontally in opposite directions. The front and rear ends of the threaded blocks 208 are fixedly connected to the rotating shaft 207. The sliding block 206 at the end of the rotating shaft 207 is slidably engaged in the sliding rail 205 on the fixed seat 201 to realize the horizontal limiting and guiding of the threaded blocks 208 and ensure that the movement process is smooth and without deviation. The first rotating rod 203 is rotatably hinged to the rotating shaft 207 of the threaded block 208. The upper end of the first rotating rod 203 is hinged to the bottom of the rotation direction roller group 3, and the middle part of the first rotating rod 203 is hinged to the second rotating rod 204. The lower end of the second rotating rod 204 is connected to the rotating shaft block 202 on the fixed seat 201, and the upper end is connected to the sliding block 211 on the bottom sliding rail 210 of the rotation direction roller group 3, forming a stable scissor-type linkage lifting structure. When the threaded blocks 208 move in opposite directions, the linkage structure retracts, realizing the lifting of the rotation direction roller group 3; when the threaded blocks 208 move towards each other, the linkage structure expands, realizing the lowering of the rotation direction roller group 3. The lifting adjustment is smooth, with large load-bearing capacity and high precision.

[0031] Please see Figure 6 The upper ends of the two sets of scissor lift mechanisms 4 are jointly supported by the rotation direction roller group 3. This mechanism can be raised and lowered synchronously with the lift mechanism. It is mainly used for support and rotation operations under pipeline welding conditions. It can transform the traditional overhead welding operation into a flat welding operation, greatly improving welding efficiency and quality. The rotation direction roller group 3 specifically includes a slide seat 301, a guide rail 302, a second bidirectional screw 303, a roller frame 304, and a second rolling wheel 305. The bottom of the slide seat 301 is fixedly connected to the scissor-type lifting mechanism 4 and rises and falls synchronously with it. The upper end of the slide seat 301 has an installation groove 306, and two sets of guide rails 302 are symmetrically fixed in the groove. A second bidirectional screw 303 is horizontally installed between the guide rails 302. The second bidirectional screw 303 also adopts a positive and negative thread structure. The second transmission box 307 of the left and right sets of rotation direction roller groups 3 achieves synchronous linkage through the second rotating shaft 308. The two sections of the threads of the second bidirectional screw 303 are respectively threaded with roller frames 304. The roller frames 304 slide with the guide rails 302 through the bottom guide groove to ensure that the roller frames 304 can move synchronously in opposite directions and smoothly, so as to realize the adaptive clamping and positioning of pipes with different diameters. The upper ends of both sets of roller frames 304 are rotatably mounted with second rollers 305. The second rollers 305 also adopt a metal wheel core and wear-resistant rubber outer layer structure to prevent slipping and damage. The outer end of the wheel axle of the second rollers 305 is connected to the second transmission device 6. The rollers are driven to rotate through the second transmission device 6, which in turn drives the clamped and fixed pipe to rotate circumferentially around its own axis, thus meeting the needs of all-round welding construction of the pipe.

[0032] Please see Figure 7 The first transmission box 212 and the second transmission box 307 of the present invention have completely identical structures and are interchangeable, effectively reducing the processing and maintenance costs of the equipment. The whole includes a box structure 401, a first worm gear 402, a first worm 403, a handle operating block 404, and a ratchet wrench 405. The first transmission box 212 is installed at the end of the fixed seat 201 of the scissor lifting mechanism 4. The first worm gear 402 inside is fixedly connected to the end of the first double-acting screw 209, and the first worm 403 is perpendicularly meshed with the first worm gear 402. The second transmission box 307 is installed at the end of the slide seat 301 of the rotation direction roller group 3. The first worm gear 402 inside is fixedly connected to the end of the second double-acting screw 303. The first worm 403 of the two sets of transmission boxes are linked left and right through the first rotating shaft 213 and the second rotating shaft 308 respectively, ensuring the synchronous operation of the equipment on both sides. Meanwhile, the outer end of the first worm gear 403 is equipped with a handle operating block 404 and a detachable ratchet wrench 405. On the construction site, the worm gear can be manually driven to rotate by the ratchet wrench 405 to achieve manual fine adjustment of the lifting height and the roller clamping distance, which is suitable for refined construction scenarios. One end of one set of the first worm gear 403 can be connected to a motor. The motor is fixedly installed on one side of the box structure 401 by a bracket, thus forming a dual adjustment mode of "electric as the main and manual as the auxiliary", which has a very strong adaptability to working conditions.

[0033] Please see Figure 6 and Figure 8The second transmission device 6 is the power core for the circumferential rotation operation of the pipeline. It has an adaptive compensation transmission function and can adapt to the dynamic working conditions of pipeline diameter adjustment and height adjustment. Specifically, it includes a first spline shaft 601, a second spline shaft 602, a third worm gear 603, a third worm 604, a first support plate 605, a second support plate 606, a fourth worm gear 607, a fourth worm 608, a support frame 609, a mounting frame 610, a third bevel gear 611, a fourth bevel gear 612, a fifth worm gear 613, and a second transmission shaft 614. The axle end of the second rolling wheel 305 is fixed with a third worm gear 603, which meshes with a third worm 604. The third worm 604 is supported on the outside of the roller frame 304 by a first support plate 605. A spline sleeve hole is opened in the center of the third worm 604 and it is slidably sleeved with the first spline shaft 601. It can achieve axial sliding compensation with the horizontal movement of the roller frame 304, avoiding transmission jamming and tooth stripping problems caused by pipe diameter adjustment. The two ends of the first spline shaft 601 are fixed with fourth worm gears 607, which mesh with a fourth worm 608 in the support frame 609. A spline guide hole is opened in the center of the fourth worm 608 and it is slidably sleeved with a second spline shaft 602. It can achieve vertical sliding compensation with the rise and fall of the rotating roller assembly. The lower end of the second spline shaft 602 is fixed with the third bevel gear 611, which meshes with the fourth bevel gear 612 at both ends of the second transmission shaft 614. The middle part of the second transmission shaft 614 is fixed with the fifth worm gear 613, which meshes with the fifth worm 705 of the drive device 7. During operation, the drive device 7 drives the second rolling wheel 305 to rotate smoothly through a combination of multi-stage worm gears and bevel gears, driving the pipeline to rotate precisely. The transmission stability is high, the noise is low, and the self-locking performance is good.

[0034] Please see Figure 8 The drive unit 7 is the sole power source for the entire device. It is integrated and installed in the middle of the base plate 1. It includes a drive motor 701, a motor bracket 702, a drive shaft 703, a second worm gear 704, a fifth worm gear 705, and a third support plate 706. The motor bracket 702 is fixed to the edge of the base plate 1 to stably support the drive motor 701. The drive motor 701 shaft is connected to the horizontally arranged drive shaft 703 through a coupling. The drive shaft 703 is supported and positioned at multiple points by multiple sets of third support plates 706, which effectively reduces rotational runout and offset. The second worm 704 is fixed in the middle of the drive shaft 703 and meshes with the second worm wheel 501 of the first transmission device 5 to provide power for axial conveying of the pipeline; the fifth worm 705 is symmetrically fixed at both ends of the drive shaft 703 and meshes with the fifth worm wheel 613 of the second transmission device 6 to provide power for circumferential rotation of the pipeline. The single motor integrates dual power output, which is simple in structure, low in energy consumption, and high in synchronous operation accuracy, and can simultaneously ensure the power requirements of pipeline conveying and rotation operation.

[0035] Please see Figure 1-8 The dual-mode switching and overall operation process of this invention are as follows: The core innovation of this invention lies in controlling the lifting and lowering of the rotation direction roller group 3 through the scissor lift mechanism 4, thereby achieving rapid switching between pipeline welding and pipeline pullback operations without the need for crane assistance throughout the entire process. The specific operation procedure is as follows: (1) Pipe assembly welding conditions In the early stage of construction, the first transmission box 212 is driven to control the scissor lifting mechanism 4 to lift the rotation direction roller group 3 to a height higher than the forward direction roller group 2, so that the pipeline is completely separated from the forward direction roller group 2 and is supported only by the second rolling wheel 305 of the rotation direction roller group 3. Then, according to the pipe diameter, the second transmission box 307 is adjusted to drive the second bidirectional screw 303 to drive the two side roller frames 304 to move towards or away from each other, so that the second rolling wheel 305 fits tightly against the outer wall of the pipeline at a suitable angle to complete the adaptive clamping and positioning. The drive motor 701 is started, and the second rolling wheel 305 is driven to rotate at a low and uniform speed through the second transmission device 6, which drives the pipeline to rotate smoothly around its own axis. The construction personnel can start and stop the rotation at any time according to the welding needs, which transforms the traditional high-altitude and difficult overhead welding operation into a convenient and stable flat welding operation. This operation method can increase the welding efficiency by about 50% and reduce the consumption of welding materials by 28.5%, completely solving the problems of unstable quality and high requirements for welder skills in traditional overhead welding.

[0036] (2) Pipeline pullback operation After the pipe assembly welding is completed, the pullback construction stage begins. The scissor lift mechanism 4 is controlled by the first transmission box 212 to lower the rotation direction roller assembly 3 to a height lower than the forward direction roller assembly 2. At this time, the weight of the pipe is completely supported by the first rolling wheel 102 of the forward direction roller assembly 2, and it is completely out of contact with the rotation direction roller assembly 3. The drive motor 701 is started, which drives the first rolling wheel 102 to rotate through the first transmission device 5. This causes the welded pipe section to slide smoothly along the axial direction. In conjunction with the horizontal directional drilling rig, the pipe pullback operation is completed. The entire process does not require multiple cranes to be used for lifting, which greatly reduces equipment rental costs and on-site coordination difficulties. It also eliminates the safety hazards of overturning and collision caused by multiple cranes lifting, while reducing fossil energy consumption and carbon emissions during construction, thus meeting the requirements of green construction. Taking the pullback construction of a 100m long pipe as an example, it can directly save about 1,700 yuan in crane machine hourly fees, resulting in significant economic benefits.

[0037] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0038] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A multi-functional integrated pipeline operation device for horizontal directional drilling, comprising a base plate (1), a forward roller assembly (2), a rotation roller assembly (3), a scissor-type lifting mechanism (4), a first transmission device (5), a second transmission device (6), and a drive device (7), characterized in that: A forward direction roller assembly (2) is fixedly installed at the middle of the upper end of the base plate (1). The forward direction roller assembly (2) is connected to the drive device (7) through the first transmission device (5). Scissor lift mechanisms (4) are fixedly installed on the base plates (1) on both sides of the forward direction roller assembly (2). A rotation direction roller assembly (3) is fixedly installed at the upper end of the scissor lift mechanism (4). The rotation direction roller assembly (3) is connected to the drive device (7) through the second transmission device (6). The drive device (7) is fixedly installed at the upper end of the base plate (1).

2. The multi-functional integrated pipeline operation device for horizontal directional drilling as described in claim 1, characterized in that: The forward direction roller assembly (2) includes a mounting base (101) and a first rolling wheel (102). The mounting base (101) is fixedly connected to the middle of the upper end of the base plate (1). The upper end of the mounting base (101) is provided with two sets of symmetrical rotating grooves (103). The first rolling wheel (102) is rotatably connected in each of the rotating grooves (103). The rotating shaft of the first rolling wheel (102) passes through the mounting base (101) and is connected to the first transmission device (5) for transmission.

3. A multi-functional integrated pipeline operation device for horizontal directional drilling as described in claim 2, characterized in that: The rotation axis of the two sets of first rolling wheels (102) is 15°-30° with the horizontal plane.

4. A multi-functional integrated pipeline operation device for horizontal directional drilling as described in claim 3, characterized in that: The scissor lift mechanism (4) includes a fixed base (201), a rotating block (202), a first rotating rod (203), a second rotating rod (204), a slide rail (205), a slide block (206), a rotating rod (207), a threaded block (208), a first bidirectional lead screw (209), a sliding rail (210), a sliding block (211), and a first transmission box (212). The fixed base (201) is fixedly connected to the bases on both sides of the forward direction roller assembly (2). On the base plate (1), a first bidirectional lead screw (209) is rotatably connected to the upper end of the fixed base (201). One end of the first bidirectional lead screw (209) passes through the fixed base (201) and is connected to the first transmission box (212). The two sets of the first transmission boxes (212) are connected to each other through the first rotating shaft (213). The two ends of the first bidirectional lead screw (209) are respectively threaded to threaded blocks (208). The two ends of the threaded blocks (208) are respectively A rotating shaft (207) is fixedly connected to the threaded block (208), and a sliding block (206) is fixedly connected to the other end of the rotating shaft (207). The sliding blocks (206) are slidably connected to the sliding rails (205), and the sliding rails (205) are fixedly connected to the fixed base (201). A first rotating rod (203) is rotatably connected to the rotating shaft (207) on both sides of the threaded block (208). The other end of the first rotating rod (203) is rotatably connected to a roller in the direction of rotation. At the lower end of the wheel assembly (3), the middle part of the first rotating rod (203) is rotatably connected to a second rotating rod (204). One end of the second rotating rod (204) is rotatably connected to both sides of the rotating shaft block (202), and the other end of the second rotating rod (204) is rotatably connected to both sides of the sliding block (211). The sliding block (211) is slidably connected to the sliding rail (210), and the sliding rail (210) is fixedly connected to the bottom of the roller assembly (3) in the rotation direction.

5. A multi-functional integrated pipeline operation device for horizontal directional drilling as described in claim 4, characterized in that: The rotating direction roller assembly (3) includes a slide seat (301), a guide rail (302), a second bidirectional lead screw (303), a roller frame (304), and a second rolling wheel (305). The lower end of the slide seat (301) is fixedly installed with the scissor lift mechanism (4). The upper end of the slide seat (301) is provided with an installation groove (306). Two sets of symmetrical guide rails (302) are fixedly connected in the installation groove (306). The second bidirectional lead screw (303) is rotatably connected in the installation groove (306) between the guide rails (302). One end of the second bidirectional lead screw (303) extends out of the slide seat. The seat (301) is connected to the second transmission box (307) for transmission. The second transmission boxes (307) are connected to each other through the second rotating shaft (308). The two ends of the second bidirectional lead screw (303) are threaded with roller frames (304). The lower end of the roller frame (304) is provided with guide grooves. The guide rails (302) are slidably connected in the guide grooves. The upper end of the roller frame (304) is rotatably connected with the second rolling wheel (305). The rotating shaft of the second rolling wheel (305) passes through the roller frame (304) and is connected to the second transmission device (6) for transmission.

6. A multi-functional integrated pipeline operation device for horizontal directional drilling as described in claim 5, characterized in that: The first transmission box (212) and the second transmission box (307) have the same structure, both including a box structure (401), a first worm gear (402), a first worm (403), a handle operating block (404), and a ratchet wrench (405). The box structure (401) is fixedly connected to one end of the fixed seat (201) or the slide seat (301). One end of the first double-acting screw (209) and the second double-acting screw (303) are inserted into the box structure (401) and fixedly connected to the first worm gear (402). One side of the first worm gear (402) is meshed with the first worm (403). The first worm gear (402) and the first worm (403) are rotatably connected inside the housing structure (401). The first worm (403) in the first transmission box (212) passes through the housing structure (401) and is fixedly connected to the first rotating shaft (213). The first worm (403) in the second transmission box (307) passes through the housing structure (401) and is fixedly connected to the second rotating shaft (308). The first worm (403) passes through the housing structure (401) and is fixedly connected to the handle operating block (404). A ratchet wrench (405) is connected to the sliding sleeve on the handle operating block (404).

7. A multi-functional integrated pipeline operation device for horizontal directional drilling as described in claim 6, characterized in that: The first transmission device (5) includes a second worm gear (501), a first bevel gear (502), and a second bevel gear (503). A transmission cavity (504) is provided in the middle of the mounting base (101). The shaft of the first rolling wheel (102) passes through the transmission cavity (504) and is fixedly connected to the first bevel gear (502). The first bevel gear (502) is meshed with the second bevel gear (503). The second bevel gear (503) is fixedly connected to both ends of the first transmission shaft (505). The second worm gear (501) is fixedly connected in the middle of the first transmission shaft (505). The second worm gear (501) is connected to the drive device (7) in a transmission connection.

8. A multi-functional integrated pipeline operation device for horizontal directional drilling as described in claim 7, characterized in that: The second transmission device (6) includes a first splined shaft (601), a second splined shaft (602), a third worm gear (603), a third worm (604), a first support plate (605), a second support plate (606), a fourth worm gear (607), a fourth worm (608), a support frame (609), a mounting frame (610), a third bevel gear (611), a fourth bevel gear (612), a fifth worm gear (613), and a second transmission shaft (614). The shaft of the second rolling wheel (305) passes through the roller frame (304) and is fixed to the third worm gear (603). The third worm gear (603) and the third worm (604) are meshed together. Both ends of the third worm (604) are rotatably connected to the first support plate (605). One end of the first support plate (605) is fixedly connected to one side of the roller frame (304). A spline sleeve hole is formed through the center of the third worm (604). A first spline shaft (601) is slidably connected inside the spline sleeve hole. Both ends of the first spline shaft (601) are rotatably connected to both ends of the slide seat (301). A fourth... The fourth worm gear (607) is meshed with the fourth worm (608). The fourth worm (608) is rotatably connected in the support frame (609). The support frame (609) is fixedly connected to both ends of the slide seat (301). A spline guide hole is opened through the center of the fourth worm (608). A second spline shaft (602) is rotatably connected in the spline guide hole. The second spline shaft (602) is rotatably connected in the mounting frame (610). The mounting frame (610) is fixedly connected to the upper end of the base plate (1). 602) A third bevel gear (611) is fixedly connected to one end. The third bevel gear (611) and the fourth bevel gear (612) are meshed with each other. The fourth bevel gear (612) is fixedly connected to both ends of the second transmission shaft (614). The second transmission shaft (614) is rotatably connected to the second support plate (606). The second support plate (606) is fixedly connected to the upper end of the base plate (1). A fifth worm gear (613) is fixedly connected to the middle of the second transmission shaft (614). The fifth worm gear (613) is connected to the drive device (7) for transmission.

9. A multi-functional integrated pipeline operation device for horizontal directional drilling as described in claim 8, characterized in that: The driving device (7) includes a drive motor (701), a motor bracket (702), a drive shaft (703), a second worm gear (704), a fifth worm gear (705), and a third support plate (706). The motor bracket (702) is fixedly connected to one edge of the base plate (1). The drive motor (701) is fixedly connected to the upper end of the motor bracket (702). The drive shaft (703) is fixedly connected to the end of the shaft of the drive motor (701). Several third support plates (706) are rotatably connected to the drive shaft (703). 06), the third support plate (706) is fixedly connected to the base plate (1), the drive shaft (703) is rotatably connected through the transmission cavity (504) in the middle, the drive shaft (703) in the transmission cavity (504) is fixedly connected to the second worm (704), the second worm (704) is meshed with the second worm wheel (501), the two ends of the drive shaft (703) are fixedly connected to the fifth worm (705), the fifth worm (705) is meshed with the fifth worm wheel (613).

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