Long-distance horizontal directional drilling construction device and method

Abstract

The present invention provides a long-distance horizontal directional drilling construction device, including a drill rod and a pipeline, a reamer fixedly installed at the rear end of the drill rod, a connecting rod fixedly installed at the rear end of the reamer, a support assembly provided at the rear end of the connecting rod, and an inner support locking assembly provided on the outer surface of the support assembly; the support assembly includes a connecting ring fixedly connected to the rear end of the connecting rod, a round rod rotatably connected to the outer surface of the connecting ring, a hydraulic mechanism provided on the outer surface of the round rod, an adjustment mechanism provided on the outer surface of the connecting rod, and a buffer mechanism provided on one end of the adjustment mechanism. The present invention also provides a long-distance horizontal directional drilling construction method, which is provided with a hydraulic mechanism, an adjustment mechanism, and a buffer mechanism, so that the inner wall of the hole can be rotated and smoothed by rotating the arc plate during reaming, 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 laying of the pipeline, and can also reduce stress concentration points on the inner wall of the hole, reducing the risk of damage to the hole due to uneven force.

Description

Technical Field

[0001] The present 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 end of the pipeline to be laid is sealed, and then a pipe pulling head with greater strength than the pipeline to be laid is installed. 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 Publication No. CN116293077A discloses a non-slotted horizontal directional drilling construction device, including a pull rod, with pull rings and sleeve assemblies connected to both ends of the pull rod, respectively. Action assemblies for assisting movement are provided at both ends of the pull rod. A drive group is provided on the pull rod to cooperate with a cleaning assembly to clean gravel and impurities on the inner wall of the hole. The inner wall of the hole is then compacted and flattened by a flattening assembly. 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, making it more flexible and convenient to use. However, the above patent document still has the following defects during implementation:

[0004] 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

[0005] In response to 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 of being unable to rotate and smooth the inner surface of holes of different diameters and lock and fix pipes of different diameters. In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0006] A long-distance horizontal directional drilling construction device includes a drill rod and a pipe, a reamer is fixedly installed on the rear end of the drill rod, a connecting rod is fixedly installed on the rear end of the reamer, a support assembly is provided at the rear end of the connecting rod, and an inner support locking assembly is provided on the outer surface of the support assembly; the support assembly includes 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 provided on the outer surface of the round rod, an adjustment mechanism is provided on the outer surface of the connecting rod, and a buffer mechanism is provided at one end of the adjustment mechanism.

[0007] 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, the inner surface of the oil tank passes through and extends to the front end of the connecting ring and is fixedly connected to a connecting pipe 1, a lower end of the connecting pipe is fixedly connected to an oil pump, the inner surface of the connecting pipe 1 passes through and extends to the rear part of the inner surface of the circular groove and is fixedly connected to a 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.

[0008] Furthermore, the adjustment mechanism includes a circular groove 1 distributed in an annular manner on the outer surface of the connecting rod, and the outer surface of the connecting rod is fixedly connected to a number of connecting rods connected to the inner surface of the circular groove 1 at one place in the circular groove, the inner surfaces of several connecting rods are slidably connected to pistons 1, one end of several pistons passes through and extends to one end of the connecting rod and is slidably connected to push rods, the outer surfaces of several connecting rods are sleeved with springs 1, the two ends of several springs 1 are respectively fixedly connected to one end of the piston 1 and the inner surface of the connecting rod, the ends of several connecting rods away from the piston 1 are fixedly connected to arc plates, and the inner surfaces of several connecting rods are fixedly connected to ventilation nets 1 that are connected to their outer surfaces.

[0009] 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. 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.

[0010] 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.

[0011] 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 to a piston 2 behind the limiting block, and a rectangular hole 1 is opened on the rear side of the upper outer surface of the round rod and communicated with the inner surface of the circular groove 2, the inner surface of the rectangular hole 1 is slidably connected to 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 to an arc surface block 1 tightly attached to the upper inner surface of the circular groove 2, the width of the arc surface block 1 is greater than the width of the inner surface of the rectangular hole 1, the length of the arc surface 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 passes through and extends to the rear end of the round rod and is fixedly connected to a ventilation net 2.

[0012] 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 the 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 jointly rotatably connected to the support blocks, and the outer surfaces of the four support blocks are all fixedly connected to rubber blocks.

[0013] Furthermore, the locking mechanism includes four flow channels distributed in an annular manner 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 to the piston 3, the rear end of the disc is provided with a rectangular hole 2 connected to the inner surface of the flow channel, the inner surfaces of the four rectangular holes 2 are all slidably connected to a connecting block 2 fixedly connected to one end of the piston 3, the rear ends of the four connecting blocks 2 are all fixedly connected to a clamping block, and the side of the inner surfaces of the four flow channels close to each other passes through and extends to the rear end of the disc where a ventilation net 3 is fixedly connected.

[0014] Furthermore, the outer surfaces of the four connecting blocks 2 are fixedly connected with arc surface blocks 2 that 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.

[0015] The present invention also adopts the following technical solutions:

[0016] A long-distance horizontal directional drilling construction method, using the long-distance horizontal directional drilling construction device as described above, comprises the following steps:

[0017] 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;

[0018] S2. Start the oil pump to allow hydraulic oil to enter the inner support locking assembly. The push mechanism drives the notch block 1 to move backward, driving the support rod to expand, so that the rubber block is tightly attached to the inner wall of the pipe. At the same time, the piston 3 slides in the flow channel, and the clamping block extends and locks on the outer surface of the pipe, achieving stable support and locking of pipes of different diameters.

[0019] S3. Under the action of the drilling rig, the drill rod drives the reamer forward, and the reaming operation begins. During this process, the support assembly rotates with the reamer, and the adjustment mechanism adjusts the position of the curved plate according to the hole diameter, so that the curved plate is in close contact with the hole wall. It is then rotated and smoothed to remove burrs, protrusions, and cutting marks on the inner wall of the hole, forming a smooth hole wall.

[0020] S4. As the hole enlargement process progresses, the pipe is gradually pulled into the enlarged hole until the entire pipe is laid;

[0021] 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.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 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 for holes of different diameters, making it more adaptable and practical.

[0024] 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, avoiding 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 efficiency of pipeline laying. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below with reference to the accompanying drawings and examples:

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 It is a schematic diagram of the overall cross-sectional structure of the present invention;

[0028] Figure 3 It is a schematic cross-sectional structure diagram of the support assembly and the inner support locking assembly of the present invention;

[0029] Figure 4 For the present invention Figure 3 Schematic diagram of the enlarged structure at A in the middle;

[0030] Figure 5 Schematic diagram of the cross-sectional structure of the support assembly of the present invention;

[0031] Figure 6 For the present invention Figure 5 Schematic diagram of the enlarged structure at B in the middle;

[0032] Figure 7Schematic diagram of the cross-sectional structure of the pushing mechanism of the present invention;

[0033] Figure 8 Schematic diagram of the cross-sectional structure of the inner supporting mechanism and the pushing mechanism of the present invention;

[0034] Figure 9 Schematic diagram of the cross-sectional structure of the locking mechanism of the present invention;

[0035] Figure 10 For the present invention Figure 9 Schematic diagram of the enlarged structure at point C in the middle.

[0036] In the figure: 1. Drill rod; 2. Reamer; 3. Connecting rod; 4. Pipe; 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. Adjusting 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 , internal 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, internal 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

[0037] The technical solutions of the present invention are further described below with reference to the accompanying drawings and embodiments.

[0038] Example 1

[0039] 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 provided at the rear end of the connecting rod 3, and an inner support locking assembly 6 is provided on the outer surface of the support assembly 5.

[0040] 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.

[0041] 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 solution, their reaming and rotation functions are utilized, and their specific connection method, structure and principle are no longer elaborated.

[0042] Specifically, in order to lock and fix the pipe 4, refer to Figure 3 and Figure 5 In 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.

[0043] For further information, see Figure 3 、 Figure 5 、 Figure 7 、 Figure 8 、 Figure 9 and Figure 10 In this embodiment, the internal 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 internal 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.

[0044] For further information, see Figure 3 and Figure 7In this embodiment, the pushing mechanism 62 includes a circular groove 621 provided on the rear part of the inner surface of the round rod 51, and the front upper part of the 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 to the piston 623 behind the limiting block 622. A rectangular hole 624 is provided on the rear part of the upper part of the outer surface of the round rod 51, which is connected to the inner surface of the circular groove 621. The inner surface of the rectangular hole 624 is slidably connected to the connecting block 625 fixedly connected to the rear end of the piston 623. The outer surface of the connecting block 625 is fixedly connected to the arc block 626 that is tightly attached to the upper part of the 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, and 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 circular groove 621 passes through and extends to the rear end of the round rod 51 and is fixedly connected to the ventilation net 627.

[0045] 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 backward movement of the piston 2 623, the air in the rear space of the circular groove 2 621 will be discharged through the ventilation net 2 627.

[0046] 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. Its connection method, specific structure and principle will not be elaborated again.

[0047] For further information, see Figure 3 and Figure 8 In this embodiment, the internal support mechanism 63 includes a notch block 2 632 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 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 jointly rotatably connected to the support block 634, and the outer surfaces of the four support blocks 634 are all fixedly connected to rubber blocks 635.

[0048] During implementation, the backward movement of piston 2 623 will drive the notch block 1 631 on the connecting block 1 625 to move backward. Since the support rod 633 is rotatably connected to the inner surface of notch block 1 631, and notch block 2 632 is fixed, the two support rods 633 on the same side will move closer to the center and spread around, making the rubber block 635 on the support block 634 close 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 to the inner surface of the pipe 4, avoid the soil generated when the reamer 2 is reaming in front of the pipe 4 from squeezing 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 drilling tools, 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.

[0049] For further information, see Figure 3 、 Figure 9 and Figure 10 In this embodiment, the locking mechanism 64 includes four flow channels 641 distributed in an annular manner and opened at the front part of the inner surface of the circular groove 2 621. The inner surfaces of the four flow channels 641 are all slidably connected to the piston 3 642. The rear end of the disc 61 is provided with a rectangular hole 2 645 distributed in an annular manner and connected to the inner surface of the flow channel 641. The inner surfaces of the four rectangular holes 2 645 are all slidably connected to the connecting block 2 643 fixedly connected to one end of the piston 3 642. The rear ends of the four connecting blocks 2 643 are all fixedly connected to the clamping block 644. The inner surfaces of the four flow channels 641 are close to each other and extend through and extend to the rear end of the disc 61 to be fixedly connected to the ventilation net 3 647.

[0050] For further information, see Figure 10 In this embodiment, the outer surfaces of the four connecting blocks 643 are fixedly connected to the arc surface blocks 646 that are tightly attached to the inner surface of the flow channel 641. The width of the four arc surface blocks 646 is greater than the width of the inner surface of the rectangular hole 645, and the length of the four arc surface blocks 626 is greater than the length of the inner surface of the rectangular hole 645.

[0051] As can be seen from the above, after the hydraulic oil enters the second circular groove 621, it enters the flow channel 641, and the third piston 642 slides in the flow channel 641, which in turn drives 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 in place, preventing the pipe 4 from moving forward and backward during the laying process.

[0052] 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.

[0053] The length of the arc block 2 646 mentioned above is always greater than the moving distance of the connecting block 2 643 in the rectangular hole 2 645, that is, no matter where the connecting block 2 643 moves to, the arc block 2 646 can always block the rectangular hole 2 645, and the arc block 1 626 and the rectangular hole 1 624 also meet this requirement.

[0054] Example 2

[0055] 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.

[0056] 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.

[0057] For further information, see Figure 3 、 Figure 5 and Figure 6 In this embodiment, the adjustment mechanism 53 includes a circular groove 531 annularly distributed and opened on the outer surface of the connecting rod 3. The outer surface of the connecting rod 3 is fixedly connected to a plurality of connecting rods 532 connected to the inner surface of the circular groove 531 at the circular groove 531. The inner surfaces of the plurality of connecting rods 532 are slidably connected to pistons 533. One end of the plurality of pistons 533 passes through and extends to the one end of the connecting rod 532 and is slidably connected to the push rod 534. The outer surfaces of the plurality of connecting rods 532 are sleeved with springs 535. The 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. The ends of the plurality of connecting rods 532 away from the piston 533 are fixedly connected to an arc plate 536. The inner surfaces of the plurality of connecting rods 532 are fixedly connected to a ventilation net 537 connected to their outer surfaces.

[0058] 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 each provided with a spring 2 542, and the two ends of the two springs 2 542 are respectively fixedly connected to the side of the arc plate 543 and the arc plate 536 close to each other.

[0059] During implementation, the oil pump 523 is started to extract the hydraulic oil in the oil tank 521 into the connecting pipe 1 524, and under the action of the solenoid valve 526, it enters the circular groove 1 531, which can then push the piston 1 533 away from each other, and push the push rod 534 to slide away from each other on the inner surface of the connecting rod 532, pushing the arc plate 536 out, so that the arc plate 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 plate 543 will rotate with the reamer 2, so that the arc surface of the arc plate 543 will scrape and smooth the inner wall of the hole during the rotation. 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 pipe 4 during the subsequent laying of the pipe 4, 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, avoiding hole collapse, and improving the work efficiency of laying the pipe 4.

[0060] 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.

[0061] Working process: When in use, the hydraulic pressure of the hydraulic mechanism 52 and the pushing mechanism 62 cooperate to make the inner support mechanism 63 and the locking mechanism 64 lock and fix the pipe 4, and at the same time, can lock and fix pipes 4 of different diameters. Then, the hydraulic mechanism 52 and the adjusting mechanism 53 cooperate to make the arc panel 543 in the buffer mechanism 54 close 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.

[0062] Example 3

[0063] The present invention also provides a long-distance horizontal directional drilling construction method, which utilizes the long-distance horizontal directional drilling construction device as described above, and includes the following steps:

[0064] 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;

[0065] S2. Start the oil pump 523 to allow hydraulic oil to enter the inner support locking assembly 6. The pushing mechanism 62 drives the notched block 1 631 to move backward, causing the support rod 633 to expand, so that the rubber block 635 is tightly attached to the inner wall of the pipe 4. At the same time, the piston 3 642 slides in the flow channel 641, and the clamping block 644 extends and locks on the outer surface of the pipe 4, achieving stable support and locking of pipes of different diameters.

[0066] S3. Under the action of the drilling rig, the drill rod 1 drives the reamer 2 forward, and the reaming operation begins. During this process, the support assembly 5 rotates with the reamer 2, and the adjustment mechanism 53 adjusts the position of the curved plate 536 according to the hole diameter, so that the curved plate 543 is in close contact with the hole wall. The curved plate 543 is rotated and smoothed to remove burrs, protrusions, and cutting marks on the inner wall of the hole, forming a smooth hole wall.

[0067] S4, as the hole enlarging process progresses, the pipe 4 is gradually pulled into the enlarged hole until the entire pipe is laid;

[0068] S5. After the pipeline is laid, reverse the oil pump 523 to retract the block 644 and release the lock on the pipeline 4. Then slowly retract the support assembly 5 and the inner support locking assembly 6. Finally, separate the drill pipe 1, the reamer 2 and the connecting rod 3 to complete the construction.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. 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 solutions of the present invention may be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions of the present invention, which should all 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 provided at the rear end of the connecting rod (3), and an inner support locking assembly (6) is provided 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); the outer surface of the connecting ring (55) is rotatably connected to a 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 adjustment mechanism (53); and one end of the adjustment mechanism (53) is provided with a buffer mechanism (54); The regulating mechanism (53) comprises a circular groove (531) distributed in an annular manner on the outer surface of the connecting rod (3); the outer surface of the connecting rod (3) is fixedly connected to a plurality of connecting rods (532) connected to the inner surface of the circular groove (531); the inner surfaces of the plurality of connecting rods (532) are slidably connected to pistons (533); one end of the plurality of pistons (533) passes through and extends to one end of the connecting rod (532) and is slidably connected to a push rod (534); the outer surfaces of the plurality of connecting rods (532) are sleeved with springs (535); the two ends of the plurality of springs (535) are fixedly connected to one end of the piston (533) and the inner surface of the connecting rod (532) respectively; the ends of the plurality of connecting rods (532) away from the piston (533) are fixedly connected to arc plates (536); the inner surfaces of the plurality of connecting rods (532) are fixedly connected to ventilation nets (537) connected to their outer surfaces; 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); The locking mechanism (64) includes four flow channels (641) annularly distributed and opened at the front 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 disc (61) is annularly distributed and opened 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 block (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 block (644), and the inner surfaces of the four flow channels (641) are close to each other and extend through and extend to the rear end of the disc (61) and are fixedly connected to the ventilation net (647).

2. A long distance horizontal directional drilling construction device according to claim 1, characterized in that: 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 formed 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 end 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).

3. The long-distance horizontal directional drilling construction device according to claim 1, 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 the arc plate (543); the outer surfaces of the two telescopic rods (541) are both provided with a spring 2 (542); the two ends of the two spring 2 (542) are respectively fixedly connected to the arc plate (543) and the side of the arc plate (536) close to each other.

4. The long-distance horizontal directional drilling construction device according to claim 1, characterized in that: The pushing mechanism (62) includes a second circular groove (621) provided on the rear portion of the inner surface of the round rod (51), the front side of the upper portion of the inner surface of the second circular groove (621) is fixedly connected to a limit block (622), the inner surface of the second circular groove (621) is located behind the limit block (622) and is slidably connected to a second piston (623), the upper portion of the outer surface of the round rod (51) is provided with a first rectangular hole (624) connected to the inner surface of the second circular groove (621), the inner surface of the first rectangular hole (624) is slidably connected to the piston The rear end of the second circular groove (623) is fixedly connected to the connecting block one (625), the outer surface of the connecting block one (625) is fixedly connected to the arc block one (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 one (626) is greater than the width of the inner surface of the rectangular hole one (624), the length of the arc block one (626) is greater than the length of the inner surface of the rectangular hole one (624), and the rear part of the inner surface of the second circular groove (621) passes through and extends to the rear end of the round rod (51) and is fixedly connected to the ventilation net two (627).

5. The long-distance horizontal directional drilling construction device according to claim 1, characterized in that: The inner support mechanism (63) includes 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 the 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 jointly 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).

6. The long-distance horizontal directional drilling construction device according to claim 1, characterized in that: The outer surfaces of the four connecting blocks 2 (643) are fixedly connected to the arc surface blocks 2 (646) that are tightly attached to the inner surface of the flow channel (641). The width of the four arc surface blocks 2 (646) is greater than the width of the inner surface of the rectangular hole 2 (645). The length of the four arc surface blocks 1 (626) is greater than the length of the inner surface of the rectangular hole 2 (645).

7. 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 6, characterized in that: The following steps are involved: S1. Connect the drill rod (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. Start the oil pump (523) to allow the hydraulic oil to enter the inner support locking assembly (6). The notch block 1 (631) is driven to move backward by 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). At the same time, the piston 3 (642) slides in the flow channel (641), and the clamping block (644) extends 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 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 size of 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, 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 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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