Pipe dragging device for horizontal directional drilling

Abstract

The utility model relates to the technical field of horizontal directional drilling construction equipment, and discloses a horizontal directional drilling pipe dragging device which comprises a drilling rod. One end of the reamer is detachably connected with one end of the drill rod, and the reamer and the drill rod can rotate synchronously; the pipe supporting head is connected with the other end of the reamer, the side, away from the reamer, of the pipe supporting head is provided with a cylindrical inner groove used for containing a pipeline, the inner groove plate is provided with a plurality of abutting plates, and the abutting plates extend in the axis direction of the inner groove and are arranged at equal angles in the axis direction of the inner groove; and the driving mechanism is used for driving the abutting plate to move towards or close to the axis direction of the inner groove. According to the pipe supporting head, the multiple abutting plates are arranged to abut against the inner side wall of a pipeline, the abutting plates are matched with the inner groove to clamp the pipeline, the contact area between the pipeline and the pipe supporting head is increased, and the stability in the pipe supporting process is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to horizontal directional drilling construction equipment technical field, in particular to a kind of horizontal directional drilling pipe dragging device. BACKGROUND

[0002] In municipal engineering, communication engineering and other underground pipeline laying construction, horizontal directional drilling technology is widely used due to its small impact on the surrounding environment, high construction efficiency and other advantages.

[0003] Patent No. CN221400356U discloses a horizontal directional drilling pipe dragging device. The reamer of the patent adopts a hollow design. After the drill cuttings enter the reamer, the differential speed of the drill rod and the spiral conveying rod causes the drill cuttings to be discharged in time, allowing the drill cuttings generated by reaming to continuously enter the reamer, reducing the flow of drill cuttings between the pipeline and the hole wall, and reducing the possibility of scratching the pipeline, preventing damage to the pipeline anticorrosion layer and affecting the service life. The pipe dragging head is driven by an electric push rod to move the connecting rod, forcing the fixed block to tightly contact the inner wall of the pipeline, thereby achieving quick connection of the pipe dragging head body and the pipeline. When the pipeline and the hole wall rub, the resistance of the fixed block to the pipeline can be increased, making the connection more reliable.

[0004] Under normal circumstances, the pipeline used in pipe dragging construction is mostly PE pipe or PP pipe, and the pipeline laying distance is generally long. In this case, if only the fixed block is tightly contacted with the inner wall of the pipeline, the contact area between the fixed block and the pipeline is relatively small, which may cause poor stability. INVENTION CONTENTS

[0005] The utility model aims to provide a kind of horizontal directional drilling pipe dragging device to overcome the above-mentioned situation deficiency.

[0006] To achieve the above purpose, the technical scheme of the utility model is as follows: a horizontal directional drilling pipe dragging device, comprising:

[0007] a drill rod;

[0008] a reamer connected to one end of the drill rod and capable of rotating synchronously with the drill rod;

[0009] a pipe supporting head connected to the other end of the reamer, the pipe supporting head is provided with an inner groove on the side away from the reamer for accommodating the pipeline, and the inner groove is in the form of a cylinder, and the inner groove plate is provided with a plurality of abutting plates, the abutting plates extend along the inner groove axis direction and are arranged at equal angles along the inner groove axis direction; and

[0010] a driving mechanism for driving the abutting plates to move towards or close to the inner groove axis direction.

[0011] Further, the driving mechanism comprises:

[0012] A fixed ring is located in the direction of the inner groove axis and is fixedly connected with the inner groove, one end of a plurality of first connecting rods is hingedly connected to the fixed ring, and the other end of the plurality of first connecting rods is hingedly connected to the abutting plate one by one;

[0013] A first movable ring is located in the direction of the inner groove axis and is located on the side of the fixed ring away from the reamer, one end of a plurality of second connecting rods is hingedly connected to the first movable ring, the other end of the plurality of second connecting rods is hingedly connected to the abutting plate one by one, and the extension line of the first connecting rod and the second connecting rod hingedly connected to the same abutting plate intersects;

[0014] A driving assembly for driving the fixed ring and the first movable ring to move closer to or away from each other.

[0015] Further, the driving assembly comprises:

[0016] A driving motor fixedly connected in the inner groove, the driving motor is located on the side of the fixed ring close to the reamer;

[0017] A screw rod connected in transmission with the output of the driving motor through a shaft coupling, the screw rod is located in the direction of the inner groove axis; and

[0018] A threaded sleeve sleeved on the side of the screw rod and threadedly connected with the screw rod, a plurality of the first movable rings are fixedly connected to the outer side wall of the threaded sleeve and are arranged at intervals in the direction of the threaded sleeve axis.

[0019] Further, the fixed ring is movably sleeved on the side of the output shaft of the driving motor, the outer side wall of the fixed ring is fixedly connected with a plurality of support rods, the support rods are arranged alternately with the first connecting rods, and the support rods are fixedly connected with the inner side wall of the inner groove.

[0020] Further, the outer side wall of the threaded sleeve is fixedly connected with a second movable ring at an end away from the fixed ring, the outer side wall of the second movable ring is fixedly connected with a plurality of telescopic rods, the telescopic rods are located in the radial direction of the inner groove, the other end of the telescopic rods is provided with a sliding wheel, and the sliding wheel is selectively connected in sliding connection with one of the inner side wall of the inner groove or the inner side wall of the pipeline.

[0021] Further, the telescopic rod comprises:

[0022] A fixed rod having one end fixedly connected with the second movable ring, and the other end of the fixed rod is fixedly connected with a sliding sleeve;

[0023] A sliding rod having one end connected in sliding connection with the sliding sleeve, and the other end of the sliding rod is provided with the sliding wheel;

[0024] The side wall of the sliding sleeve is provided with a sliding groove, one end of the sliding rod is fixedly connected with a sliding protrusion, and the sliding protrusion is in sliding connection with the sliding groove.

[0025] A compression spring is arranged in the sliding sleeve, one end of the compression spring is connected with the inner end wall of the sliding sleeve, and the other end of the compression spring is connected with one end of the sliding rod.

[0026] Further, the reamer comprises:

[0027] A connecting head in a cylindrical shape is fixedly connected with a threaded connecting sleeve at an end away from the pipe supporting head, the threaded connecting sleeve is detachably connected with the drill rod in a threaded mode, and the outer side wall of the connecting head is provided with spiral cutting teeth.

[0028] A cutting seat fixedly connected with the connecting head is provided with a conical surface at an end close to the connecting head, the conical surface is provided with impact alloy columns, and the conical surface and the side wall of the cutting seat are provided with a plurality of chip removal grooves in communication.

[0029] Further, a connecting ring in a U-shaped structure is further included, a first connecting rod is fixedly connected with an end of the cutting seat away from the connecting head, the first connecting rod is sleeved on the circumferential side of the connecting ring and is rotationally connected with the cutting seat, a second connecting rod is connected between two ends of the connecting ring, one end of a connecting plate is fixedly connected with an end of the pipe supporting head close to the connecting head, and the other end of the connecting plate is rotationally connected with the second connecting rod.

[0030] Compared with the prior art, the utility model has at least the following advantages:

[0031] The utility model discloses a plurality of abutting plates are arranged to abut against the inner side wall of the pipeline, and the pipeline is clamped by cooperating with the inner groove, so that the contact area between the pipeline and the pipe supporting head is increased, and the stability of the pipe dragging process is improved. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can also be obtained according to these drawings without paying the creativity of the labor.

[0033] Figure 1 It is the whole structure schematic diagram of the utility model horizontal directional drilling pipe dragging device;

[0034] Figure 2 It is the utility model pipe supporting head and drive mechanism's sectional view;

[0035] Figure 3 It is the assembly schematic view of the second movable ring, telescopic rod and sliding wheel of the utility model;

[0036] Figure 4 It is the structural schematic view of the reamer of the utility model.

[0037] The figure mark: 1, drill rod;2, pipe head;3, inner groove;4, pipeline;5, abutment plate;6, fixed ring;7, first connecting rod;8, support rod;9, first movable ring;10, second connecting rod;11, drive motor;12, shaft coupling;13, screw;14, threaded sleeve;15, second movable ring;16, fixed rod;17, sliding sleeve;18, sliding rod;19, sliding wheel;20, sliding groove;21, sliding convex;22, compression spring;23, connecting head;24, threaded connection sleeve;25, cutting seat;26, impact alloy column;27, chip removal groove;28, connecting ring;29, first connecting rod;30, second connecting rod;31, connecting plate. DETAILED DESCRIPTION

[0038] The technical scheme in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0039] In order to make the above-mentioned purpose, features and advantages of the utility model more apparent, obvious and easy to understand, the utility model will be further described in detail below with reference to the drawings and specific embodiments.

[0040] Reference Figures 1-2 The utility model provides a kind of horizontal directional drilling pipe dragging device, including drill rod 1, reamer, pipe head 2 and drive mechanism. Drill rod 1 is used to be connected with drilling machine and transmit power. Reamer one end is detachably connected with the one end of drill rod 1, and can be rotated with drill rod 1, its main role is to enlarge hole in the process of drill rod 1 drilling, to facilitate subsequent pipeline 4 smoothly drag into. Pipe head 2 is connected with the other end of reamer, and the side away from reamer is equipped with the inner groove 3 for accommodating pipeline 4 and being cylindrical, the setting of inner groove 3 provides stable placement space for pipeline 4. Inner groove 3 board is provided with several abutment plates 5, these abutment plates 5 extend along the axis direction of inner groove 3, and are arranged at equal angle along the axis direction of inner groove 3, pipeline 4 can be effectively supported and fixed by abutment plate 5, prevent pipeline 4 from displacement or wobble in the process of dragging. After drill rod 1 drills through guide hole and extends from the other side, the one end of reamer is connected with drill rod 1, and is rotated under the driving of drill rod 1, uses reamer to ream the guide hole, realizes the laying effect of pipeline 4.

[0041] The driving mechanism is a key component for realizing the movement of the abutting plate 5 towards or close to the axis direction of the inner groove 3, which specifically comprises a fixed ring 6, a first movable ring 9, a first connecting rod 7, a second connecting rod 10 and a driving assembly.

[0042] The fixed ring 6 is located in the axis direction of the inner groove 3 and is fixedly connected with the inner groove 3, and a plurality of one ends of the first connecting rods 7 are hingedly connected on the fixed ring 6. The other ends of the first connecting rods 7 are hingedly connected with the abutting plate 5 one by one. The first movable ring 9 is also located in the axis direction of the inner groove 3 and is located on the side of the fixed ring 6 away from the reamer. A plurality of one ends of the second connecting rods 10 are hingedly connected on the first movable ring 9. The other ends of the second connecting rods 10 are hingedly connected with the abutting plate 5 one by one, and intersect with the extension lines of the first connecting rods 7 and the second connecting rods 10 hingedly connected on the same abutting plate 5. This intersecting connecting rod layout can ensure that the abutting plate 5 can move towards or away from the inner wall of the pipeline 4 under the joint action of the first connecting rods 7 and the second connecting rods 10, so as to realize the clamping or loosening action of the pipeline 4.

[0043] The driving assembly is a power source for driving the fixed ring 6 and the first movable ring 9 to move close to or away from each other, which specifically comprises a driving motor 11, a screw rod 13 and a threaded sleeve 14. The driving motor 11 is located on the side of the fixed ring 6 close to the reamer. The screw rod 13 is connected with the output of the driving motor 11 through a shaft coupling 12, and the screw rod 13 is located in the axis direction of the inner groove 3. When the driving motor 11 starts, the power output by the driving motor 11 is transmitted to the screw rod 13 through the shaft coupling 12, so that the screw rod 13 rotates. The threaded sleeve 14 is sleeved on the side of the screw rod 13 and is threadedly connected with the screw rod 13. A plurality of first movable rings 9 are fixedly connected on the outer side wall of the threaded sleeve 14 and are arranged at intervals along the axis direction of the threaded sleeve 14. When the screw rod 13 rotates, the threaded sleeve 14 will move linearly along the axis direction of the screw rod 13 due to the threaded connection relationship between the threaded sleeve 14 and the screw rod 13, thereby driving the first movable ring 9 to move along the axis direction of the inner groove 3, so as to realize the adjustment of the position of the abutting plate 5.

[0044] In order to improve the stability of the fixed ring 6 and the structural strength of the whole device, the fixed ring 6 is movably sleeved on the side of the output shaft of the driving motor 11. The outer side wall of the fixed ring 6 is fixedly connected with a plurality of support rods 8. The support rods 8 are arranged alternately with the first connecting rods 7 and are fixedly connected with the inner side wall of the inner groove 3. The fixed ring 6 and the inner side wall of the inner groove 3 are fixedly connected through the support rods 8, which can enhance the stability of the fixed ring 6.

[0045] In order to realize the stability of the threaded sleeve 14 structure, ensure that the threaded sleeve 14 away from the fixed ring 6 end to achieve stable support, threaded sleeve 14 outer wall away from the fixed ring 6 end fixedly connected with the second movable ring 15, the outer wall of the second movable ring 15 is fixedly connected with a plurality of telescopic rods, telescopic rods in the inner groove 3 radial direction, the other end of the telescopic rod is installed with a sliding wheel 19, the sliding wheel 19 has selectively with the inner wall of the inner groove 3 or the inner wall of the pipeline 4 sliding connection.

[0046] The specific structure of the telescopic rod includes: one end of the fixed rod 16 is fixedly connected with the second movable ring 15, the other end of the fixed rod 16 is fixedly connected with the sliding sleeve 17, the sliding sleeve 17 provides sliding space for the sliding rod 18; one end of the sliding rod 18 is slidingly connected with the sliding sleeve 17, the other end of the sliding rod 18 is installed with a sliding wheel 19, the sliding wheel 19 can slide on the inner wall of the inner groove 3 or the inner wall of the pipeline 4.

[0047] The side wall of the sliding sleeve 17 is provided with a sliding groove 20, one end of the sliding rod 18 is fixedly connected with a sliding protrusion 21, the sliding protrusion 21 is slidingly connected with the sliding groove 20. The cooperation mode of the sliding groove 20 and the sliding protrusion 21 can ensure that the sliding rod 18 stably slides in the sliding sleeve 17 along the predetermined direction, avoiding the sliding rod 18 from deviating or being stuck during movement.

[0048] The compression spring 22 is arranged in the sliding sleeve 17, one end of the compression spring 22 is connected with the inner end wall of the sliding sleeve 17, the other end is connected with one end of the sliding rod 18. The compression spring 22 can be elastically deformed when the sliding rod 18 is subjected to the pipeline 4, thereby realizing the telescopic function of the telescopic rod. When the pipeline 4 is taken out of the inner groove 3, the compression spring 22 is elongated, so that the sliding wheel 19 slides in the inner groove 3, to realize the effect of stably supporting the end of the sliding sleeve 17 away from the fixed ring 6.

[0049] The reamer is a key component of the device for enlarging the hole, which specifically comprises a connecting head 23 and a cutting seat 25. The connecting head 23 is in a cylindrical shape, and a threaded connecting sleeve 24 is fixedly connected to the end of the connecting head 23 away from the pipe head 2, and the threaded connecting sleeve 24 is threadedly detachably connected with the drill rod 1. This threaded connection mode makes the connection between the reamer and the drill rod 1 firm and convenient to disassemble, and facilitates the replacement of reamers of different specifications according to different construction requirements. The outer side wall of the connecting head 23 is provided with helical cutting teeth, which can cut and crush the soil around the hole during the rotation of the drill rod 1, so as to gradually enlarge the hole and create conditions for the pulling-in of the pipeline 4. The cutting seat 25 is fixedly connected with the connecting head 23, and the end of the cutting seat 25 close to the connecting head 23 is provided with a conical surface, and the conical surface is provided with an impact alloy column 26. The impact alloy column 26 has high hardness and wear resistance, and can impact and crush hard obstacles around the hole during the rotation and advancement of the drill rod 1, further enlarging the hole. The conical surface and the side wall of the cutting seat 25 are provided with a plurality of chip removal grooves 27 in communication, so as to avoid the accumulation of debris affecting the reaming effect and pipe pulling efficiency.

[0050] In order to improve the overall stability and connection reliability of the device, the device further comprises a U-shaped connecting ring 28. The end of the cutting seat 25 away from the connecting head 23 is fixedly connected with a first connecting rod 29, and the first connecting rod 29 is sleeved on the side of the connecting ring 28 and is rotatably connected with the cutting seat 25. The second connecting rod 30 is connected between the two ends of the connecting ring 28, and the end of the pipe head 2 close to the connecting head 23 is fixedly connected with one end of a connecting plate 31, and the other end of the connecting plate 31 is rotatably connected with the second connecting rod 30. Through the cooperation of the U-shaped connecting ring 28 and the connecting rods and the connecting plate 31, the pipe head can swing up and down in the borehole, facilitating the movement of the pulled pipeline 4 at the turning place of the borehole.

[0051] In the description of the present application, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application.

[0052] The above-described embodiments are only preferred modes of the present application, and do not limit the scope of the present application. Without departing from the design spirit of the present application, various modifications and improvements to the technical solutions of the present application made by those skilled in the art shall fall within the protection scope determined by the claims of the present application.

Claims

1. A horizontal directional drill pipe pulling device, comprising: The utility model relates to a pipe supporting device for drilling rig, which comprises: a drill pipe (1); a reamer detachably connected with one end of the drill pipe (1) and capable of rotating synchronously with the drill pipe (1); a pipe supporting head (2) connected with the other end of the reamer, the pipe supporting head (2) being provided with an inner groove (3) in the shape of a cylinder for accommodating a pipe (4) and being provided with a plurality of abutting plates (5) on the side away from the reamer, the abutting plates (5) extending along the axis of the inner groove (3) and being arranged at equal angles along the axis of the inner groove (3); and a driving mechanism for driving the abutting plates (5) to move towards or close to the axis of the inner groove (3). The driving mechanism comprises:

2. The horizontal directional pullback apparatus of claim 1, wherein, a fixed ring (6) fixedly connected with the inner groove (3) along the axis of the inner groove (3), one end of a plurality of first connecting rods (7) being hingedly connected to the fixed ring (6), the other end of the first connecting rods (7) being hingedly connected to the abutting plates (5) one by one; a first movable ring (9) located on the side of the fixed ring (6) away from the reamer along the axis of the inner groove (3), one end of a plurality of second connecting rods (10) being hingedly connected to the first movable ring (9), the other end of the second connecting rods (10) being hingedly connected to the abutting plates (5) one by one, and the extension lines of the first connecting rods (7) and the second connecting rods (10) hingedly connected to the same abutting plate (5) intersecting each other; and a driving assembly for driving the fixed ring (6) and the first movable ring (9) to move close to or away from each other. The driving assembly comprises:

3. The horizontal directional pullback apparatus of claim 2, wherein, a driving motor (11) fixedly connected in the inner groove (3), the driving motor (11) being located on the side of the fixed ring (6) close to the reamer; a screw rod (13) connected to the output of the driving motor (11) through a shaft coupling (12), the screw rod (13) being located along the axis of the inner groove (3); and a threaded sleeve (14) sleeved on the side of the screw rod (13) and threadedly connected with the screw rod (13), a plurality of the first movable rings (9) being fixedly connected to the outer side wall of the threaded sleeve (14) and being arranged at intervals along the axis of the threaded sleeve (14). The fixed ring (6) is movably sleeved on the side of the output shaft of the driving motor (11), the outer side wall of the fixed ring (6) being fixedly connected with a plurality of support rods (8), the support rods (8) being arranged alternately with the first connecting rods (7), and the support rods (8) being fixedly connected with the inner side wall of the inner groove (3).

4. The horizontal directional pullback apparatus of claim 3, wherein, The outer side wall of the threaded sleeve (14) is fixedly connected with a second movable ring (15) on the side away from the fixed ring (6), the outer side wall of the second movable ring (15) being fixedly connected with a plurality of telescopic rods, the telescopic rods being located along the radial direction of the inner groove (3), the other end of the telescopic rods being provided with a sliding wheel (19), and the sliding wheel (19) being selectively connected with one of the inner side wall of the inner groove (3) and the inner side wall of the pipe (4).

5. The horizontal directional pullback apparatus of claim 3, wherein, The telescopic rod comprises:

6. The horizontal directional pullback apparatus of claim 5, wherein, ​ A fixed rod (16) is fixedly connected with the second movable ring (15), and the other end of the fixed rod (16) is fixedly connected with a sliding sleeve (17); A sliding rod (18) is slidably connected with one end of the sliding sleeve (17), and the other end of the sliding rod (18) is provided with the sliding wheel (19); A sliding groove (20) is arranged on the side wall of the sliding sleeve (17), one end of the sliding rod (18) is fixedly connected with a sliding protrusion (21), and the sliding protrusion (21) is slidably connected with the sliding groove (20); and A compression spring (22) is arranged in the sliding sleeve (17), one end of the compression spring (22) is connected with the inner end wall of the sliding sleeve (17), and the other end of the compression spring (22) is connected with one end of the sliding rod (18).

7. The horizontal directional pull plow apparatus of claim 1, wherein, The reamer comprises: A connecting head (23) in a cylindrical shape, one end of the connecting head (23) away from the pipe supporting head (2) is fixedly connected with a threaded connecting sleeve (24), the threaded connecting sleeve (24) is threadedly detachably connected with the drill rod (1), and the outer side wall of the connecting head (23) is provided with spiral cutting teeth; and A cutting seat (25) fixedly connected with the connecting head (23), one end of the cutting seat (25) close to the connecting head (23) is provided with a conical surface, the conical surface is provided with impact alloy columns (26), and the conical surface and the side wall of the cutting seat (25) are provided with a plurality of connected communication chip removal grooves (27).

8. The horizontal directional pull plow apparatus of claim 7, wherein, Further comprising a connecting ring (28) in a U-shaped structure, one end of the cutting seat (25) away from the connecting head (23) is fixedly connected with a first connecting rod (29), the first connecting rod (29) is sleeved on the side of the connecting ring and is rotatably connected with the cutting seat (25), the second connecting rod (30) is connected between the two ends of the connecting ring (28), one end of the pipe supporting head (2) close to the connecting head (23) is fixedly connected with one end of a connecting plate (31), and the other end of the connecting plate (31) is rotatably connected with the second connecting rod (30).

Images