Long-distance horizontal directional drilling construction device and method

Abstract

The long-distance horizontal directional drilling construction device comprises a drilling rod and a pipeline, a reamer is fixedly installed at the rear end of the drilling rod, a connecting rod is fixedly installed at the rear end of the reamer, a supporting assembly is arranged at the rear end of the connecting rod, and an inner supporting locking assembly is arranged on the outer surface of the supporting assembly; the supporting assembly comprises a connecting ring fixedly connected with the rear end of the connecting rod, the outer surface of the connecting ring is rotationally connected with a round rod, a hydraulic mechanism is arranged on the outer surface of the round rod, an adjusting mechanism is arranged on the outer surface of the connecting rod, and a buffering mechanism is arranged at one end of the adjusting mechanism. The invention further provides a long-distance horizontal directional drilling construction method, a hydraulic mechanism, an adjusting mechanism and a buffering mechanism are arranged, so that the inner wall of a hole can be rotationally flattened through rotation of an arc-shaped plate during reaming, the inner wall of the hole is smoother, and the drilling efficiency is improved. The smooth inner wall of the hole is beneficial to reducing damage to the outer surface of the pipeline during subsequent pipeline laying, stress concentration points of the inner wall of the hole can be reduced, and the risk that the hole is damaged due to uneven stress is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of horizontal directional drilling construction, and in particular to a long-distance horizontal directional drilling construction device and method. Background Art

[0002] After drilling a hole in the ground, a horizontal directional drill usually lays a pipeline. Usually, the front port of the pipeline to be laid is sealed, and then a pipe pulling head with greater strength than the pipeline to be laid is set. The pipe pulling head is welded to the front end of the pipeline to be laid, and the pipe pulling head is pulled by a wire rope to lay the pipeline in the hole drilled by the horizontal directional drill. After the pipeline is laid, the pipe pulling head is cut off.

[0003] Chinese patent announcement number CN116293077A discloses a non-slotted horizontal directional drilling construction device, including a pull rod, with pull rings and sleeve components connected to both ends of the pull rod, respectively, and action components for assisting movement are arranged at both ends of the pull rod, and a driving group is arranged on the pull rod to cooperate with a cleaning component to clean gravel impurities and the like on the inner wall of the hole, and then the inner wall of the hole is compacted and flattened by a flattening component. While laying the pipeline body, the inner wall of the hole can be flattened and optimized to prevent damage to the outer wall of the pipeline body, and it is more flexible and convenient to use; however, the above patent document still has the following defects during implementation: Although the above patent can compact and flatten the inner wall of the hole during implementation, it cannot rotate and smooth the inner surface of holes of different diameters, and it cannot lock and fix pipes of different diameters. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a long-distance horizontal directional drilling construction device and method, which can effectively solve the problem that the inner surface of holes of different diameters cannot be rotated and smoothed and pipes of different diameters cannot be locked and fixed. In order to achieve the above purpose, the present invention adopts the following technical solutions: A long-distance horizontal directional drilling construction device comprises a drill rod and a pipeline, wherein a hole reamer is fixedly mounted on the rear end of the drill rod, a connecting rod is fixedly mounted on the rear end of the hole reamer, a supporting assembly is arranged on the rear end of the connecting rod, an inner support locking assembly is arranged on the outer surface of the supporting assembly; the supporting assembly comprises a connecting ring fixedly connected to the rear end of the connecting rod, a round rod is rotatably connected to the outer surface of the connecting ring, a hydraulic mechanism is arranged on the outer surface of the round rod, an adjusting mechanism is arranged on the outer surface of the connecting rod, and a buffer mechanism is arranged on one end of the adjusting mechanism.

[0005] Furthermore, the hydraulic mechanism includes an oil tank fixedly connected to the outer surface of the round rod, a circular groove is provided on the inner surface of the round rod, a connecting pipe 1 is fixedly connected to the inner surface of the oil tank through and extending to the front end of the connecting ring, an oil pump is fixedly connected to a lower end of the connecting pipe, the inner surface of the connecting pipe 1 penetrates and extends to the rear part of the inner surface of the circular groove and is fixedly connected to the connecting pipe 2, and an electromagnetic valve is fixedly installed at the intersection of the outer surfaces of the connecting pipe 1 and the outer surfaces of the connecting pipe 2.

[0006] Furthermore, the adjustment mechanism includes a circular groove 1 which is annularly distributed and opened on the outer surface of the connecting rod, and a plurality of connecting rods connected to the inner surface of the circular groove 1 are fixedly connected to the outer surface of the connecting rod at one place in the circular groove, and a plurality of connecting rods are slidably connected to the inner surfaces of the connecting rods, and a plurality of pistons 1 pass through and extend to one end of the connecting rod and are slidably connected to a push rod, and a spring 1 is sleeved on the outer surfaces of the connecting rods, and the two ends of the spring 1 are respectively fixedly connected to one end of the piston 1 and the inner surface of the connecting rod, and a plurality of connecting rods are fixedly connected to an arc plate at one end away from the piston 1, and a ventilation net 1 which is connected to the outer surface thereof is fixedly connected to the inner surfaces of the connecting rods.

[0007] Furthermore, the buffer mechanism includes two telescopic rods fixedly connected to one end of the arc plate, and the ends of the two telescopic rods away from the arc plate are commonly fixedly connected to the arc plate, and the outer surfaces of the two telescopic rods are each provided with a spring 2, and the two ends of the two springs 2 are respectively fixedly connected to the arc plate and the side where the arc plate is close to each other.

[0008] Furthermore, the inner support locking assembly includes a disc fixedly connected to the outer surface of the round rod, a pushing mechanism is provided at the rear of the inner surface of the round rod, an inner support mechanism is provided at the rear of the outer surface of the round rod, and a locking mechanism is provided on the inner surface of the disc.

[0009] Furthermore, the pushing mechanism includes a circular groove 2 opened at the rear part of the inner surface of the round rod, the front side of the upper inner surface of the circular groove 2 is fixedly connected to a limiting block, the inner surface of the circular groove 2 is slidably connected with a piston 2 behind the limiting block, a rectangular hole 1 is opened on the rear side of the upper outer surface of the round rod, and the inner surface of the rectangular hole 1 is slidably connected with a connecting block 1 fixedly connected to the rear end of the piston 2, the outer surface of the connecting block 1 is fixedly connected with an arc block 1 tightly attached to the upper part of the inner surface of the circular groove 2, the width of the arc block 1 is greater than the width of the inner surface of the rectangular hole 1, the length of the arc block 1 is greater than the length of the inner surface of the rectangular hole 1, and the rear part of the inner surface of the circular groove 2 penetrates and extends to the rear end of the round rod and is fixedly connected with a ventilation net 2.

[0010] Furthermore, the internal support mechanism includes a notch block 2 fixedly connected to the rear part of the outer surface of the round rod, the outer surface of the round rod is slidably connected to a notch block 1 fixedly connected to the upper end of a connection block 1, the inner surfaces of the notch block 1 and the notch block 2 are both annularly distributed and rotatably connected to four support rods, the outer surfaces of the support rods on the same side are rotatably connected to support blocks, and the outer surfaces of the four support blocks are all fixedly connected to rubber blocks.

[0011] Furthermore, the locking mechanism includes four flow channels which are annularly distributed and opened at the front part of the inner surface of the circular groove 2, the inner surfaces of the four flow channels are all slidably connected with pistons 3, the rear end of the disc is annularly distributed with rectangular holes 2 which are connected to the inner surfaces of the flow channels, the inner surfaces of the four rectangular holes 2 are all slidably connected with connecting blocks 2 which are fixedly connected to one end of piston 3, the rear ends of the four connecting blocks 2 are all fixedly connected with clamping blocks, and the sides of the inner surfaces of the four flow channels which are close to each other penetrate and extend to the rear end of the disc and are fixedly connected with ventilation nets 3.

[0012] Furthermore, the outer surfaces of the four connecting blocks 2 are fixedly connected with arc surface blocks 2 which are tightly attached to the inner surface of the flow channel, the width of the four arc surface blocks 2 is greater than the width of the inner surface of the rectangular hole 2, and the length of the four arc surface blocks 1 is greater than the length of the inner surface of the rectangular hole 2.

[0013] The present invention also adopts the following technical solution: A long-distance horizontal directional drilling construction method, using the long-distance horizontal directional drilling construction device as described above, comprises the following steps: S1. Connect the drill pipe to the reamer and assemble them with the support assembly and the inner support locking assembly through the connecting rod; ensure that the hydraulic mechanism, adjustment mechanism, buffer mechanism, push mechanism, inner support mechanism and locking mechanism are in an operable state; S2. Start the oil pump to allow the hydraulic oil to enter the inner support locking assembly. The notch block 1 is driven to move backward through the pushing mechanism, driving the support rod to expand, so that the rubber block is closely attached to the inner wall of the pipe. At the same time, the piston 3 slides in the flow channel, and the block extends and locks on the outer surface of the pipe, thereby achieving stable support and locking of pipes of different diameters. S3. Under the action of the drilling rig, the drill rod drives the reamer forward to start the reaming operation; during this process, the support assembly rotates with the reamer, and the adjustment mechanism adjusts the position of the arc plate according to the hole size, so that the arc plate is in close contact with the hole wall, and is rotated and smoothed to remove burrs, protrusions and cutting marks on the inner wall of the hole to form a smooth hole wall; S4. As the hole enlargement process progresses, the pipe is gradually pulled into the enlarged hole until the entire pipe is laid; S5. After the pipeline is laid, operate the oil pump in reverse to retract the block and release the lock on the pipeline. Then slowly retract the support assembly and the inner support locking assembly. Finally, separate the drill pipe, reamer and connecting rod to complete the construction.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, by providing a hydraulic mechanism, an adjustment mechanism and a buffer mechanism, the inner wall of the hole can be smoothed by rotating the arc plate during hole expansion. The smoothing can effectively remove burrs, protrusions and cutting marks on the inner wall of the hole, making the inner wall of the hole smoother. The smooth inner wall of the hole helps to reduce damage to the outer surface of the pipeline during subsequent pipeline laying, and can also reduce stress concentration points on the inner wall of the hole, thereby reducing the risk of damage to the hole due to uneven force and avoiding hole collapse. At the same time, corresponding adjustments can be made to holes of different diameters, making the adaptability and practicality stronger; 2. In the present invention, by providing a pushing mechanism, an internal supporting mechanism and a locking mechanism, the rubber block and the clamping block will be in a relatively stable state under the action of the hydraulic oil, which can avoid damage to the inner and outer surfaces of the pipeline. At the same time, pipelines of different diameters can be internally supported and locked to avoid the need to manually disassemble the pipeline and the reamer after the pipeline is laid. At the same time, it can also avoid cutting off one end of the pipeline, thereby improving the utilization rate of the pipeline and the laying efficiency of the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below in conjunction with the accompanying drawings and embodiments: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the overall cross-sectional structure of the present invention; Figure 3 It is a schematic cross-sectional structure diagram of the support assembly and the inner support locking assembly of the present invention; Figure 4 For the present invention Figure 3 A schematic diagram of the enlarged structure at A in the middle; Figure 5 It is a schematic diagram of the cross-sectional structure of the support assembly of the present invention; Figure 6 For the present invention Figure 5 A schematic diagram of the enlarged structure at B in the middle; Figure 7 It is a schematic diagram of the cross-sectional structure of the driving mechanism of the present invention; Figure 8 It is a schematic cross-sectional structure diagram of the inner supporting mechanism and the pushing mechanism of the present invention; Fig. 9 It is a schematic cross-sectional structure diagram of the locking mechanism of the present invention; Fig.10 For the present invention Fig. 9 Schematic diagram of the enlarged structure at point C in the middle.

[0016] In the figure: 1, drill rod; 2, reamer; 3, connecting rod; 4, pipeline; 5, support assembly; 51, round rod; 52, hydraulic mechanism; 521, oil tank; 522, round groove; 523, oil pump; 524, connecting pipe 1; 525, connecting pipe 2; 526, solenoid valve; 53, adjustment mechanism; 531, round groove 1; 532, connecting rod; 533, piston 1; 534, push rod; 535, spring 1; 536, arc plate; 537, ventilation net 1; 54, buffer mechanism; 541, telescopic rod; 542, spring 2; 543, arc plate; 55, connecting ring; 6 , inner support locking assembly; 61, disc; 62, pushing mechanism; 621, circular groove two; 622, limit block; 623, piston two; 624, rectangular hole one; 625, connecting block one; 626, arc surface block one; 627, ventilation net two; 63, inner support mechanism; 631, notch block one; 632, notch block two; 633, support rod; 634, support block; 635, rubber block; 64, locking mechanism; 641, flow channel; 642, piston three; 643, connecting block two; 644, clamping block; 645, rectangular hole two; 646, arc surface block two; 647, ventilation net three. DETAILED DESCRIPTION

[0017] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0018] Embodiment 1 like Figure 1 and Figure 2 As shown, a long-distance horizontal directional drilling construction device includes a drill rod 1 including a pipe 4, a reamer 2 is fixedly installed at the rear end of the drill rod 1, a connecting rod 3 is fixedly installed at the rear end of the reamer 2, a support assembly 5 is arranged at the rear end of the connecting rod 3, and an inner support locking assembly 6 is arranged on the outer surface of the support assembly 5.

[0019] During the implementation of this embodiment, after the non-grooving drilling operation is performed on the ground by the drilling rig and drill bit in the prior art, the drill bit is removed, the reamer 2 and the drill rod 1 are installed, and then the pipe 4 is fixed and locked by the internal support locking assembly 6. The drill rod 1 returns to the hole under the action of the drilling rig, and the hole reaming operation is performed by the reamer 2. At the same time, the support assembly 5 will rotate with the reamer 2 to support and smooth the inner wall of the hole, and the pipe 4 is pulled into the hole for laying.

[0020] The drill pipe 1, reamer 2 and connecting rod 3 mentioned above are all mature reaming technical means and equipment in the prior art. In this scheme, their functions of reaming and rotating are utilized, and their specific connection method, structure and principle are not further elaborated.

[0021] Specifically, in order to lock and fix the pipeline 4, refer to Figure 3 and Figure 5In this embodiment, the hydraulic mechanism 52 includes an oil tank 521 fixedly connected to the outer surface of the round rod 51, a circular groove 522 is opened on the inner surface of the round rod 51, the inner surface of the oil tank 521 passes through and extends to the front end of the connecting ring 55 and is fixedly connected to a connecting pipe 1 524, the lower end of the connecting pipe 1 524 is fixedly connected to an oil pump 523, the inner surface of the connecting pipe 1 524 passes through and extends to the rear part of the inner surface of the circular groove 522 and is fixedly connected to a connecting pipe 2 525, and a solenoid valve 526 is fixedly installed at the intersection of the outer surfaces of the connecting pipe 1 524 and the outer surfaces of the connecting pipe 2 525.

[0022] For further information, see Figure 3 , Figure 5 , Figure 7 , Figure 8 , Fig. 9 and Fig.10 In this embodiment, the inner support locking assembly 6 includes a disc 61 fixedly connected to the outer surface of the round rod 51, a pushing mechanism 62 is provided at the rear of the inner surface of the round rod 51, an inner support mechanism 63 is provided at the rear of the outer surface of the round rod 51, and a locking mechanism 64 is provided on the inner surface of the disc 61.

[0023] For further information, see Figure 3 and Figure 7 In this embodiment, the pushing mechanism 62 includes a circular groove 621 opened at the rear part of the inner surface of the round rod 51, the front side of the upper inner surface of the circular groove 621 is fixedly connected to the limiting block 622, the inner surface of the circular groove 621 is slidably connected with the piston 623 behind the limiting block 622, a rectangular hole 624 connected to the inner surface of the circular groove 621 is opened at the rear side of the upper outer surface of the round rod 51, the inner surface of the rectangular hole 624 is slidably connected with a connecting block 625 fixedly connected to the rear end of the piston 623, the outer surface of the connecting block 625 is fixedly connected with an arc block 626 tightly attached to the upper inner surface of the circular groove 621, the width of the arc block 626 is greater than the width of the inner surface of the rectangular hole 624, the length of the arc block 626 is greater than the length of the inner surface of the rectangular hole 624, and the rear part of the inner surface of the circular groove 621 penetrates and extends to the rear end of the round rod 51 and is fixedly connected with a ventilation net 627.

[0024] During the implementation process, the oil pump 523 is started to extract the hydraulic oil in the oil tank 521 into the connecting pipe 1 524. Under the control of the solenoid valve 526, the flow direction of the hydraulic oil is changed to enter the connecting pipe 2 525, and then it can reach the front space of the circular groove 2 621. Under the action of the hydraulic oil, the piston 2 623 will be pushed to move backward, so that the piston 2 623 drives the connecting block 1 625 to slide on the inner surface of the rectangular hole 1 624. At the same time, during the movement of the piston 2 623 backward, the air in the rear space of the circular groove 2 621 will be discharged through the ventilation net 2 627.

[0025] The solenoid valve 526 mentioned above is a mature control technology means and equipment in the prior art. In this solution, it is used to control the reverse flow of hydraulic oil, and its connection method, specific structure and principle are not further explained.

[0026] For further information, see Figure 3 and Figure 8 In this embodiment, the inner support mechanism 63 includes a notch block 632 fixedly connected to the rear part of the outer surface of the round rod 51, and the outer surface of the round rod 51 is slidably connected to a notch block 631 fixedly connected to the upper end of the connection block 625. The inner surfaces of the notch block 631 and the notch block 632 are both annularly distributed and rotatably connected to four support rods 633. The outer surfaces of the support rods 633 on the same side are rotatably connected to support blocks 634, and the outer surfaces of the four support blocks 634 are all fixedly connected to rubber blocks 635.

[0027] During the implementation process, the piston 2 623 will drive the notch block 1 631 on the connecting block 1 625 to move backwards during the backward movement. Since the support rod 633 is rotatably connected to the inner surface of the notch block 1 631, and the notch block 2 632 is fixed, the two support rods 633 on the same side will move closer to the middle and spread around, so that the rubber block 635 on the support block 634 is tightly attached to the inner wall of the pipe 4, so that the inner surface of the pipe 4 is supported and fixed, which can provide a certain supporting force for the inner surface of the pipe 4, avoid the soil generated when the reamer 2 is reaming in front of the pipe 4 to squeeze the pipe 4, prevent the pipe 4 from being deformed in this area, ensure the straightness and stability of the pipe 4, enable the pipe 4 to better withstand the pressure from the soil and the drilling tool, reduce the risk of damage to the pipe 4 due to excessive pressure, and ensure that the reamer 2 maintains the correct position and angle during the reaming process, thereby improving the precision and accuracy of reaming.

[0028] For further information, see Figure 3 , Fig. 9 and Fig.10 In this embodiment, the locking mechanism 64 includes four flow channels 641 which are annularly distributed and opened at the front part of the inner surface of the circular groove 2 621, and the inner surfaces of the four flow channels 641 are all slidably connected with the piston 3 642. A rectangular hole 2 645 which is connected to the inner surface of the flow channel 641 is annularly distributed and opened at the rear end of the disk 61, and the inner surfaces of the four rectangular holes 2 645 are all slidably connected with a connecting block 2 643 which is fixedly connected to one end of the piston 3 642. The rear ends of the four connecting blocks 2 643 are all fixedly connected with a clamping block 644, and the inner surfaces of the four flow channels 641 which are close to each other penetrate and extend to the rear end of the disk 61 and are fixedly connected with a ventilation net 3 647.

[0029] For further information, see Fig.10In this embodiment, the outer surfaces of the four connecting blocks 643 are fixedly connected with arc blocks 646 that are tightly attached to the inner surface of the flow channel 641. The width of the four arc blocks 646 is greater than the width of the inner surface of the rectangular hole 645. The length of the four arc blocks 626 is greater than the length of the inner surface of the rectangular hole 645.

[0030] As can be seen from the above, after the hydraulic oil enters the second circular groove 621, it will enter the flow channel 641, and the third piston 642 will slide in the flow channel 641, thereby driving the second connecting block 643 on the third piston 642 to slide on the inner surface of the second rectangular hole 645, so that the clamping block 644 can clamp the outer surface of the pipe 4, thereby preventing the pipe 4 from being displaced forward and backward during the laying process; Secondly, through the mutual cooperation of the internal support mechanism 63 and the locking mechanism 64, the internal support mechanism 63 and the locking mechanism 64 will be in a relatively stable state under the action of the hydraulic oil, which can avoid damage to the inner and outer surfaces of the pipe 4. At the same time, the pipes 4 of different diameters can be locked and fixed, avoiding the need to manually disassemble the pipe 4 and the reamer 2 after the pipe 4 is laid. At the same time, it can also avoid cutting off one end of the pipe 4, thereby improving the utilization rate of the pipe 4 and the laying efficiency of the pipe 4.

[0031] The length of the arc block 646 mentioned above is always greater than the moving distance of the connecting block 643 in the rectangular hole 645, that is, no matter where the connecting block 643 moves to, the arc block 646 can always block the rectangular hole 645, and the arc block 626 and the rectangular hole 624 also meet this requirement.

[0032] Embodiment 2 This embodiment adds a supporting component 5 for supporting and smoothing the inner wall on the basis of the first embodiment, so as to achieve the purpose of supporting and smoothing the inner wall.

[0033] Specifically, in order to support and smooth the inner wall of the hole, refer to Figure 3 , Figure 4 , Figure 5 and Figure 6 In this embodiment, the support assembly 5 includes a connecting ring 55 fixedly connected to the rear end of the connecting rod 3, the outer surface of the connecting ring 55 is rotatably connected to the round rod 51, the outer surface of the round rod 51 is provided with a hydraulic mechanism 52, the outer surface of the connecting rod 3 is provided with an adjusting mechanism 53, and one end of the adjusting mechanism 53 is provided with a buffer mechanism 54.

[0034] For further information, see Figure 3 , Figure 5 and Figure 6In this embodiment, the adjustment mechanism 53 includes a circular groove 531 annularly distributed and opened on the outer surface of the connecting rod 3, and the outer surface of the connecting rod 3 is fixedly connected with a plurality of connecting rods 532 connected with the inner surface of the circular groove 531 at the circular groove 531, and the inner surfaces of the plurality of connecting rods 532 are slidably connected with pistons 533, and one end of the plurality of pistons 533 penetrates and extends to one end of the connecting rod 532 and is slidably connected with push rods 534, and the outer surfaces of the plurality of connecting rods 532 are sleeved with springs 535, and the two ends of the plurality of springs 535 are respectively fixedly connected with one end of the piston 533 and the inner surface of the connecting rod 532, and the ends of the plurality of connecting rods 532 away from the piston 533 are fixedly connected with arc plates 536, and the inner surfaces of the plurality of connecting rods 532 are fixedly connected with ventilation nets 537 connected with their outer surfaces.

[0035] For further information, see Figure 3 and Figure 5 In this embodiment, the buffer mechanism 54 includes two telescopic rods 541 fixedly connected to one end of the arc plate 536, and the ends of the two telescopic rods 541 away from the arc plate 536 are commonly fixedly connected to the arc plate 543, and the outer surfaces of the two telescopic rods 541 are both provided with springs 542, and the two ends of the two springs 542 are respectively fixedly connected to the side of the arc plate 543 and the arc plate 536 close to each other.

[0036] During the implementation process, the oil pump 523 is started to extract the hydraulic oil in the oil tank 521 into the connecting pipe 1 524, and enters the circular groove 1 531 under the action of the solenoid valve 526, thereby pushing the piston 1 533 away from each other, and pushing the push rod 534 to slide away from each other on the inner surface of the connecting rod 532, pushing out the arc plate 536, so that the arc panel 543 can be tightly attached to the inner wall of the hole under the cooperation of the telescopic rod 541 and the spring 2 542. At the same time, the arc panel 543 will rotate with the reamer 2, so that the arc surface of the arc panel 543 scrapes and smoothes the inner wall of the hole during the rotation process. The rotation and smoothing can effectively remove burrs, protrusions and cutting marks on the inner wall of the hole, making the inner wall of the hole smoother. The smooth inner wall of the hole helps to reduce damage to the outer surface of the pipeline 4 during the subsequent laying of the pipeline 4, and can also reduce the stress concentration points on the inner wall of the hole, thereby reducing the risk of damage to the hole due to uneven force, avoiding the occurrence of hole collapse, and improving the work efficiency of laying the pipeline 4.

[0037] Secondly, under the action of the adjustment mechanism 53, the arc panel 543 can rotate and smooth the inner surface of holes of different diameters, which is more adaptable and practical and does not need to be replaced according to the hole size.

[0038] Working process: When in use, through the cooperation of the hydraulic pressure of the hydraulic mechanism 52 and the pushing mechanism 62, the inner support mechanism 63 and the locking mechanism 64 can lock and fix the pipe 4, and can also lock and fix pipes 4 of different diameters. Then, under the cooperation of the hydraulic mechanism 52 and the adjusting mechanism 53, the arc panel 543 in the buffer mechanism 54 is tightly attached to the inner wall of the hole, so that the arc panel 543 rotates and smoothes the inner wall of the hole as the reamer 2 rotates.

[0039] Embodiment 3 The present invention also provides a long-distance horizontal directional drilling construction method, using the long-distance horizontal directional drilling construction device as described above, comprising the following steps: S1, connect the drill pipe 1 with the reamer 2, and assemble them with the support assembly 5 and the inner support locking assembly 6 through the connecting rod 3; ensure that the hydraulic mechanism 52, the adjustment mechanism 53, the buffer mechanism 54, the pushing mechanism 62, the inner support mechanism 63 and the locking mechanism 64 are in an operable state; S2, start the oil pump 523, so that the hydraulic oil enters the inner support locking assembly 6, and drives the notch block 1 631 to move backward through the pushing mechanism 62, driving the support rod 633 to expand, so that the rubber block 635 is closely attached to the inner wall of the pipe 4, and at the same time the piston 3 642 slides in the flow channel 641, and the clamping block 644 extends out and locks on the outer surface of the pipe 4, so as to achieve stable support and locking of pipes of different diameters; S3. Under the action of the drilling rig, the drill rod 1 drives the reamer 2 forward to start the reaming operation; during this process, the support assembly 5 rotates with the reamer 2, and the adjustment mechanism 53 adjusts the position of the arc plate 536 according to the hole diameter, so that the arc plate 543 is in close contact with the hole wall, and is rotated and smoothed to remove burrs, protrusions and cutting marks on the inner wall of the hole to form a smooth hole wall; S4, as the hole enlarging process progresses, the pipe 4 is gradually pulled into the enlarged hole until the entire pipe is laid; S5. After the pipeline is laid, the oil pump 523 is operated in reverse to retract the block 644, release the lock on the pipeline 4, and then slowly recover the support assembly 5 and the inner support locking assembly 6, and finally separate the drill pipe 1, the reamer 2 and the connecting rod 3 to complete the construction.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A long-distance horizontal directional drilling construction device, comprising a drill rod (1) and a pipe (4), characterized in that: A reamer (2) is fixedly mounted on the rear end of the drill rod (1), a connecting rod (3) is fixedly mounted on the rear end of the reamer (2), a supporting assembly (5) is arranged at the rear end of the connecting rod (3), and an inner supporting locking assembly (6) is arranged on the outer surface of the supporting assembly (5); The support assembly (5) comprises a connecting ring (55) fixedly connected to the rear end of the connecting rod (3); a round rod (51) is rotatably connected to the outer surface of the connecting ring (55); a hydraulic mechanism (52) is provided on the outer surface of the round rod (51); an adjustment mechanism (53) is provided on the outer surface of the connecting rod (3); and a buffer mechanism (54) is provided at one end of the adjustment mechanism (53).

2. A long-distance horizontal directional drilling construction device according to claim 1, characterized in that: The hydraulic mechanism (52) comprises an oil tank (521) fixedly connected to the outer surface of the round rod (51); a circular groove (522) is formed on the inner surface of the round rod (51); a connecting pipe (524) is fixedly connected to the inner surface of the oil tank (521) through and extending to the front end of the connecting ring (55); an oil pump (523) is fixedly connected to the lower end of the connecting pipe (524); a connecting pipe (525) is fixedly connected to the inner surface of the connecting pipe (524) through and extending to the rear of the inner surface of the circular groove (522); and a solenoid valve (526) is fixedly mounted at the intersection of the outer surfaces of the connecting pipe (524) and the connecting pipe (525).

3. A long-distance horizontal directional drilling construction device according to claim 1, characterized in that: The regulating mechanism (53) comprises a circular groove (531) arranged in an annular manner on the outer surface of the connecting rod (3); a plurality of connecting rods (532) connected to the inner surface of the circular groove (531) are fixedly connected to the outer surface of the connecting rod (3) at the circular groove (531); a plurality of connecting rods (532) are slidably connected to the inner surfaces of the connecting rods (532); one end of the plurality of connecting rods (533) penetrates through and extends to one end of the connecting rod (532) and is slidably connected to a push rod (534); a spring (535) is sleeved on the outer surfaces of the plurality of connecting rods (532); two ends of the plurality of springs (535) are respectively fixedly connected to one end of the piston (533) and the inner surface of the connecting rod (532); an arc plate (536) is fixedly connected to one end of the connecting rod (532) away from the piston (533); and a ventilation net (537) connected to the outer surface of the plurality of connecting rods (532) is fixedly connected to the inner surfaces of the plurality of connecting rods (532).

4. A long-distance horizontal directional drilling construction device according to claim 3, characterized in that: The buffer mechanism (54) comprises two telescopic rods (541) fixedly connected to one end of the arc plate (536); one end of the two telescopic rods (541) away from the arc plate (536) is fixedly connected to a curved plate (543); the outer surfaces of the two telescopic rods (541) are sleeved with springs (542); the two ends of the two springs (542) are respectively fixedly connected to the sides of the curved plate (543) and the curved plate (536) that are close to each other.

5. The long-distance horizontal directional drilling construction device according to claim 1, characterized in that: The inner support locking assembly (6) comprises a disc (61) fixedly connected to the outer surface of the round rod (51), a pushing mechanism (62) is provided at the rear of the inner surface of the round rod (51), an inner support mechanism (63) is provided at the rear of the outer surface of the round rod (51), and a locking mechanism (64) is provided at the inner surface of the disc (61).

6. A long-distance horizontal directional drilling construction device according to claim 5, characterized in that: The pushing mechanism (62) comprises a second circular groove (621) formed on the rear part of the inner surface of the round rod (51); a limit block (622) is fixedly connected to the front upper part of the inner surface of the second circular groove (621); a second piston (623) is slidably connected to the inner surface of the second circular groove (621) behind the limit block (622); a first rectangular hole (624) is formed on the rear upper part of the outer surface of the round rod (51) and is connected to the inner surface of the second circular groove (621); and the inner surface of the first rectangular hole (624) is slidably connected to the piston. The second circular groove (623) is fixedly connected to a connecting block (625) at the rear end thereof; the outer surface of the connecting block (625) is fixedly connected to an arc block (626) which is tightly attached to the upper part of the inner surface of the second circular groove (621); the width of the arc block (626) is greater than the width of the inner surface of the rectangular hole (624); the length of the arc block (626) is greater than the length of the inner surface of the rectangular hole (624); the rear part of the inner surface of the second circular groove (621) penetrates through and extends to the rear end of the round rod (51) and is fixedly connected to a ventilation net (627).

7. A long distance horizontal directional drilling construction device according to claim 6, characterized in that: The inner support mechanism (63) comprises a notch block 2 (632) fixedly connected to the rear portion of the outer surface of the round rod (51); the outer surface of the round rod (51) is slidably connected to a notch block 1 (631) fixedly connected to the upper end of the connection block 1 (625); the inner surfaces of the notch block 1 (631) and the notch block 2 (632) are both annularly distributed and rotatably connected to four support rods (633); the outer surfaces of the support rods (633) on the same side are rotatably connected to a support block (634); and the outer surfaces of the four support blocks (634) are all fixedly connected to a rubber block (635).

8. A long distance horizontal directional drilling construction device according to claim 6, characterized in that: The locking mechanism (64) comprises four flow channels (641) annularly distributed and opened at the front part of the inner surface of the circular groove (621); the inner surfaces of the four flow channels (641) are all slidably connected to the piston (642); the rear end of the disk (61) is annularly distributed and opened to the inner surface of the flow channels (641) with rectangular holes (645) connected to the inner surface of the flow channels (641); the inner surfaces of the four rectangular holes (645) are all slidably connected to the connecting blocks (643) fixedly connected to one end of the piston (642); the rear ends of the four connecting blocks (643) are all fixedly connected to the clamping blocks (644); and the inner surfaces of the four flow channels (641) are close to each other and penetrate and extend to the rear end of the disk (61) and are fixedly connected to the ventilation net (647).

9. A long distance horizontal directional drilling construction device according to claim 8, characterized in that: The outer surfaces of the four second connecting blocks (643) are fixedly connected to arc surface blocks (646) that are tightly attached to the inner surface of the flow channel (641); the width of the four second arc surface blocks (646) is greater than the width of the inner surface of the rectangular hole (645); and the length of the four first arc surface blocks (626) is greater than the length of the inner surface of the rectangular hole (645).

10. A long-distance horizontal directional drilling construction method, using the long-distance horizontal directional drilling construction device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Connect the drill pipe (1) to the reamer (2), and assemble them with the support assembly (5) and the inner support locking assembly (6) through the connecting rod (3); ensure that the hydraulic mechanism (52), the adjustment mechanism (53), the buffer mechanism (54), the pushing mechanism (62), the inner support mechanism (63) and the locking mechanism (64) are in an operable state; S2, starting the oil pump (523) to allow hydraulic oil to enter the inner support locking assembly (6), driving the notch block 1 (631) to move backward through the pushing mechanism (62), driving the support rod (633) to expand, so that the rubber block (635) is closely attached to the inner wall of the pipe (4), and at the same time the piston 3 (642) slides in the flow channel (641), and the clamping block (644) extends out and locks on the outer surface of the pipe (4), thereby achieving stable support and locking of pipes of different diameters; S3. Under the action of the drilling machine, the drill rod (1) drives the reamer (2) forward to start the reaming operation; during this process, the support assembly (5) rotates with the reamer (2), and the adjustment mechanism (53) adjusts the position of the arc plate (536) according to the hole diameter, so that the arc plate (543) is in close contact with the hole wall, and is rotated and smoothed to remove burrs, protrusions and cutting marks on the inner wall of the hole, thereby forming a smooth hole wall; S4, as the hole enlarging process progresses, the pipe (4) is gradually pulled into the enlarged hole until the entire pipe is laid; S5. After the pipeline is laid, the oil pump (523) is operated in reverse to retract the clamping block (644) and release the lock on the pipeline (4). Then, the support assembly (5) and the inner support locking assembly (6) are slowly recovered, and finally, the drill pipe (1), the reamer (2) and the connecting rod (3) are separated to complete the construction.

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