Autonomous correction pipe laying device for high-precision horizontal directional drilling

Abstract

The utility model discloses a high-precision horizontal directional drilling automatic correction pipe laying device which is characterized by comprising a drill rod, a drill bit and a connecting assembly, and the drill rod is connected with the drill bit through the connecting assembly; the connecting assembly comprises a first circular truncated cone part and a second circular truncated cone part, the first circular truncated cone part is fixedly connected with the second circular truncated cone part, the first circular truncated cone part is in a circular truncated cone shape, the second circular truncated cone part is in a circular truncated cone shape, and four inwards-sunken arc inclined faces are evenly arranged on the second circular truncated cone part in the circumferential direction. A plurality of eccentric jet flow holes are uniformly formed in the arc inclined surface; and a corresponding electric inclined sliding rail is arranged in the second circular truncated cone part aiming at each arc inclined surface, a sealing plate is installed on the electric inclined sliding rail in a sliding mode, and the sealing plate can seal all the eccentric jet flow holes in the arc inclined surfaces. According to the utility model, the drilling direction of the horizontal directional drill can be more flexibly and finely corrected and adjusted.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field that horizontal directional drilling structure improves, concretely relates to a kind of high-precision horizontal directional drilling autonomous correction pipe-laying device. BACKGROUND

[0002] Horizontal directional drilling is a kind of construction equipment for laying various underground public facilities such as pipelines, cables and the like without excavating the ground surface.

[0003] When the existing horizontal directional drilling is used for pipe-laying operation construction, the drill rod of the horizontal directional drilling pushes the drill bit transversely to rotate forward, and the existing one is mostly conical or spiral, and the jet flow holes are symmetrically arranged, so that, under the joint action of the drill rod thrust and the mud flow uniformly sprayed by the jet flow holes, the hole drilled is a straight hole, but since the drilling process is entirely carried out underground, and the underground soil layer is complex and prone to cause deviation of the drilling direction, and the underground cables, gas pipelines and the like are usually avoided during drilling, it is necessary to preset the drilling route and constantly correct and rectify the drilling direction of the horizontal directional drilling.

[0004] When the drilling direction of the existing horizontal directional drilling deviates, the deviation direction and the deviation amount are measured by a detection device, and the deviation is usually corrected by means of the drill rod thrust, but the distance required by this correction method is long and the correction process is slow, and it is easily limited by the operation space. And some existing horizontal directional drilling with correction structure sets jet flow holes on one side, and the direction of the mud flow sprayed by rotating the jet flow holes is used to correct the drilling direction of the horizontal directional drilling, but since the jet flow holes are not symmetrically arranged, the jet flow holes need to be rotated constantly to correct them at all times, which leads to the defects that the setting method is complicated and consumes more power. CONTENT OF THE UTILITY MODEL

[0005] In view of the above deficiencies of the prior art, the utility model provides a kind of high-precision horizontal directional drilling autonomous correction pipe-laying device, four inwardly recessed arc bevels are evenly arranged in the circumferential direction, and a plurality of eccentric jet flow holes are evenly arranged on the arc bevels, and corresponding electrically-driven inclined sliding rails and sealing plates are arranged for each arc bevel, so as to selectively close all eccentric jet flow holes on the arc bevels except the deviation direction by means of the sealing plates, so as to facilitate more flexible and fine correction and adjustment of the drilling direction of the horizontal directional drilling.

[0006] The high-precision horizontal directional drilling autonomous correction pipe-laying device, comprising a drill rod, a drill bit and a connecting assembly, the drill rod is connected with the drill bit through the connecting assembly;

[0007] The connecting assembly comprises a first circular truncated cone and a second circular truncated cone, the first circular truncated cone is fixedly connected with the second circular truncated cone, the first circular truncated cone is in the shape of a circular truncated cone, the second circular truncated cone is in the shape of a circular truncated cone, four inwardly recessed circular arc inclined surfaces are uniformly arranged on the second circular truncated cone in the circumferential direction, and a plurality of eccentric jet holes are uniformly arranged on the circular arc inclined surfaces.

[0008] A corresponding electric inclined slide rail is arranged for each of the circular arc inclined surfaces in the second circular truncated cone, and a sealing plate is slidably installed on the electric inclined slide rail, and the sealing plate can seal all the eccentric jet holes on the circular arc inclined surface.

[0009] Furthermore, an electric control water tank is arranged in the first circular truncated cone, and the electric control water tank is communicated with all the eccentric jet holes through a flow guide pipe.

[0010] Furthermore, the circular arc inclined surface is provided with six or eight.

[0011] Furthermore, a signal generator is arranged in the first circular truncated cone.

[0012] Furthermore, the first circular truncated cone and the second circular truncated cone are detachably connected.

[0013] Furthermore, a first threaded section is arranged on the inner wall of one end of the first circular truncated cone, a second threaded section is arranged on the outer wall of one end of the second circular truncated cone, and the first threaded section is threadedly connected with the second threaded section.

[0014] The utility model has the beneficial effects that:

[0015] The utility model discloses four inwardly recessed circular arc inclined surfaces are uniformly arranged in the circumferential direction, and a plurality of eccentric jet holes are uniformly arranged on the circular arc inclined surfaces, and a corresponding electric inclined slide rail and a sealing plate are arranged for each of the circular arc inclined surfaces, so that when the horizontal directional drilling deviates, the sealing plate seals all the eccentric jet holes on the circular arc inclined surface except the deviation direction, the reverse force generated by the high-pressure mud flow sprayed through the eccentric jet hole on the circular arc inclined surface in the deviation direction is used to correct the drilling direction of the horizontal directional drilling, or a plurality of eccentric jet holes on the circular arc inclined surface are selectively sealed, so that the utility model is more favorable to flexibly and finely correct the drilling direction, compared with the prior art that only one side jet hole is arranged to correct the drilling direction, the utility model does not need to be adjusted at all times, and the reverse force generated by the uniformly arranged eccentric jet holes can ensure that the horizontal directional drilling drills a straight hole.

[0016] In conclusion, compared with the prior art, the correction device of the utility model is more convenient to operate and can more flexibly and finely correct the drilling direction of the horizontal directional drilling. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The structure schematic view of the high-precision horizontal directional drilling autonomous correction pipe laying device is provided in the utility model.

[0018] Figure 2 For Figure 1 The structure schematic view when the middle sealing plate completely seals all eccentric jet holes on the arc bevel;

[0019] Figure 3 The side view of the utility model from the drill rod along the drill bit direction;

[0020] Figure 4 The structure schematic view when the utility model is provided with an electric control water tank and a flow guide pipe;

[0021] In the figure: drill rod 1, drill bit 2, first circular table part 3, second circular table part 4, arc bevel 5, eccentric jet hole 6, electric inclined slide rail 7, sealing plate 8, electric control water tank 9, flow guide pipe 10. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, purposes and effects achieved by the utility model easy to understand, the utility model is further described below in combination with specific implementation manners.

[0023] In the description of the utility model, it should be pointed out that the directions or position relationships indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end" and "the other end" are based on the directions or position relationships shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model. The terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0024] In the description of the utility model, it should be pointed out that, unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "connection" and the like should be understood broadly, for example, "connection" can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, and can be the communication inside two elements. For ordinary skilled persons in the art, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0025] As Figures 1 to 3 shown, the utility model relates to a high-precision horizontal directional drilling autonomous correction pipe laying device, which comprises a drill rod 1, a drill bit 2 and a connecting assembly, the drill rod 1 is connected with the drill bit 2 through the connecting assembly;

[0026] The connecting assembly comprises a first circular truncated cone 3 and a second circular truncated cone 4, the first circular truncated cone 3 is fixedly connected with the second circular truncated cone 4, the first circular truncated cone 3 is in the shape of a circular truncated cone, the second circular truncated cone 4 is in the shape of a circular truncated cone, the second circular truncated cone 4 is uniformly provided with four inwardly recessed circular arc inclined surfaces 5 in the circumferential direction, and a plurality of eccentric jet holes 6 are uniformly arranged on the circular arc inclined surfaces 5;

[0027] The second circular truncated cone 4 is internally provided with a corresponding electrically-driven inclined slide rail 7 for each circular arc inclined surface 5, the electrically-driven inclined slide rail 7 is slidingly installed with a sealing plate 8, and the sealing plate 8 can seal all the eccentric jet holes 6 on the circular arc inclined surface 5.

[0028] Specifically, the drill rod 1 and the connecting assembly, specifically the first circular truncated cone 3, can be fixedly connected by welding or bolt connection, and the connection between the drill bit 2 and the second circular truncated cone 4 can be achieved by setting a mounting hole matched with the drill bit 2 in the second circular truncated cone 4, and then achieving relative fixed rotary connection by thread connection between the end of the drill bit 2 and the second circular truncated cone 4.

[0029] The inclination angle of the electrically-driven inclined slide rail 7 is preferably consistent with the inclination angle of the corresponding circular arc inclined surface 5, when it is necessary to seal the eccentric jet hole 6, the sealing plate 8 is slid out of the electrically-driven inclined slide rail 7 internally arranged on the side of the second circular truncated cone 4 close to the first circular truncated cone 3, so as to seal the eccentric jet hole 6, thereby cutting off the communication between the eccentric jet hole 6 and the drill bit 2 through the inside of the second circular truncated cone 4, so that the eccentric jet hole 6 cannot spray the high-pressure mud flow generated when the drill bit 2 drills from the side; when it is not necessary to seal, the sealing plate 8 needs to be completely retracted into the electrically-driven inclined slide rail 7 by sliding, so as to avoid affecting the work of the eccentric jet hole 6.

[0030] In the embodiment, four inwardly recessed circular arc inclined surfaces 5 are uniformly arranged on the outer side wall of the second circular truncated cone 4 in the circumferential direction, and a plurality of eccentric jet holes 6 are uniformly arranged on the circular arc inclined surfaces 5, and a corresponding electrically-driven inclined slide rail 7 and a sealing plate 8 are arranged for each circular arc inclined surface 5, wherein the electrically-driven inclined slide rail 7 is electrically connected with a control end on the ground, so that when the horizontal directional drilling deviates, the electrically-driven inclined slide rail 7 is remotely controlled by the control end to drive the sealing plate 8 to slide, so as to seal all the eccentric jet holes 6 on the circular arc inclined surfaces 5 except the deviation direction, so that the reverse force generated by the high-pressure mud flow sprayed through the eccentric jet holes 6 on the circular arc inclined surfaces 5 in the deviation direction can correct the drilling direction of the horizontal directional drilling, or selectively seal all the eccentric jet holes 6 on several circular arc inclined surfaces 5 so as to more finely and flexibly correct and adjust the drilling direction.

[0031] In addition, compared with the prior art method of setting only one side jet flow hole for correction, the embodiment does not need to rotate the circular arc slope 5 at all times to continuously correct and adjust, and when the horizontal directional drilling does not deviate, the reaction force generated by the uniformly arranged eccentric jet flow holes 6 ensures that the horizontal directional drilling drills a straight hole.

[0032] Therefore, compared with the prior art, the high-precision horizontal directional drilling autonomous correction pipe laying device provided by the embodiment has the advantages of being more convenient to operate and being more flexible and precise in correcting and adjusting the drilling direction of the horizontal directional drilling.

[0033] In an alternative embodiment, as shown in Figure 4 The first circular cone member 3 is internally provided with an electric control water tank 9, and the electric control water tank 9 is in communication with all the eccentric jet flow holes 6 through a flow guide pipe 10.

[0034] Specifically, the electric control water tank 9 is relatively small and is arranged inside the first circular cone member 3. The electric control water tank 9 is used to store clean water, and an electric high-pressure water pump is further arranged inside the electric control water tank 9. The electric high-pressure water pump is electrically connected with a control end on the ground, so that the electric high-pressure water pump can be controlled by the control end to turn on or off, so that the clean water in the electric control water tank 9 can flow to the eccentric jet flow holes 6 through the flow guide pipe 10, thereby playing a role of flushing and cleaning the eccentric jet flow holes 6, so as to prevent the eccentric jet flow holes 6 from being blocked by sludge and other objects and thus unable to play a role of spraying high-pressure mud flow. In other embodiments, the flow guide pipe 10 can be in communication with the drill bit 2, so as to cool and clean the drill bit 2, thereby improving the service life and drilling efficiency of the drill bit 2.

[0035] In an alternative embodiment, the circular arc slope 5 is provided with six or eight.

[0036] Specifically, by increasing the number of circular arc slopes 5, the flexibility and precision of the correction and adjustment of the drilling direction of the horizontal directional drilling through the eccentric jet flow holes 6 on the circular arc slopes 5 are improved.

[0037] In an alternative embodiment, the first circular cone member 3 is internally provided with a signal generator.

[0038] Specifically, by arranging the signal generator inside the first circular cone member 3, the position information of the drill bit 2 can be transmitted to the control end by the signal generator, so as to position the drill bit 2 of the horizontal directional drilling.

[0039] In an alternative embodiment, the first circular cone member 3 and the second circular cone member 4 are detachably connected.

[0040] Specifically, by setting the first circular cone part 3 and the second circular cone part 4 in detachable connection, when it is necessary to replace the drill bit 2 entirely new or of different specifications, or to change the number of the circular arc bevels 5, only the second circular cone part 4 needs to be replaced, thus the embodiment can facilitate the adjustment and replacement of the drill bit 2 or the circular arc bevels 5.

[0041] In an alternative embodiment, the inner wall of one end of the first circular cone part 3 is provided with a first threaded section, and the outer wall of one end of the second circular cone part 4 is provided with a second threaded section, and the first threaded section is threadedly connected with the second threaded section.

[0042] In the embodiment, the detachable connection of the first circular cone part 3 and the second circular cone part 4 is realized by threaded connection. Specifically, a first threaded section is provided on the inner wall of one end of the first circular cone part 3, and a second threaded section is provided on the outer wall of one end of the second circular cone part 4, so that the first circular cone part 3 and the second circular cone part 4 are fixedly connected by sleeving the threaded sections of the two parts and then rotating and fixing. In order to ensure the fastening of the connection, a buckle or a bolt can be additionally provided for fixed connection. The detachable connection of the embodiment is relatively simple in structure, easy to design and realize, and has the advantage of simple operation.

[0043] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above embodiments, and the above embodiments and the description in the specification are only to illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model can also have various changes and improvements, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A high-precision horizontal directional drilling autonomous correction pipe-laying device, characterized in that, The utility model provides a drilling tool, including drill rod (1), drill bit (2) and connecting assembly, drill rod (1) is connected with drill bit (2) through connecting assembly; The connecting assembly includes a first circular truncated cone (3) and a second circular truncated cone (4), the first circular truncated cone (3) is fixedly connected with the second circular truncated cone (4), the first circular truncated cone (3) is in the shape of a circular truncated cone, the second circular truncated cone (4) is in the shape of a circular truncated cone, the second circular truncated cone (4) is uniformly provided with four inwardly recessed circular arc inclined surfaces (5) along the circumference, and a plurality of eccentric jet holes (6) are uniformly arranged on the circular arc inclined surfaces (5). The second circular truncated cone (4) is internally provided with a corresponding electrically-driven inclined slide rail (7) for each circular arc inclined surface (5), the electrically-driven inclined slide rail (7) is slidably installed with a sealing plate (8), and the sealing plate (8) can seal all the eccentric jet holes (6) on the circular arc inclined surface (5).

2. A high-precision horizontal directional drilling autonomous correction pipe-laying device according to claim 1, characterized in that The first circular truncated cone (3) is internally provided with an electrically-controlled water tank (9), and the electrically-controlled water tank (9) is in communication with all the eccentric jet holes (6) through a flow guide pipe (10).

3. The high-precision horizontal directional drilling autonomous correction pipe-laying device according to claim 1, characterized in that, The circular arc inclined surface (5) is provided with six or eight.

4. The high-precision horizontal directional drilling autonomous correction pipe-laying device according to claim 1, characterized in that, The first circular truncated cone (3) is internally provided with a signal generator.

5. The high-precision horizontal directional drilling autonomous correction pipe-laying device according to claim 1, characterized in that, The first circular truncated cone (3) and the second circular truncated cone (4) are detachably connected.

6. A high-precision horizontal directional drilling autonomous correction pipe-laying device according to claim 5, characterized in that, An inner wall of one end of the first circular truncated cone (3) is provided with a first threaded section, an outer wall of one end of the second circular truncated cone (4) is provided with a second threaded section, and the first threaded section is threadedly connected with the second threaded section.

Images