Horizontal directional drilling pipeline back-dragging auxiliary device

Abstract

The utility model discloses a horizontal directional drilling pipeline back-dragging auxiliary device, which relates to the technical field of pipeline construction, and comprises a base, a pipeline, a rubber fitting layer, an adjusting plate and a driving hydraulic rod, pushing and clamping assemblies for clamping the outer wall of the pipeline are distributed on the inner wall of the annular positioning frame in an annular array mode. The annular positioning frame, the elastic clamping arc plates, the pushing arc plates, the clamping and pushing hydraulic rods, the ball seats, the balls, the guide sliding rods and the buffer springs are used in cooperation, so that a pipeline can be subjected to multi-point positioning in the inner wall of the annular positioning frame to be limited and fixed, and then the pipeline is prevented from being separated from the bearing range of the bearing mechanism; and meanwhile, the pipelines of different specifications can be clamped and limited, and the pipelines are kept stable.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline construction, in particular to a horizontal directional drilling pipeline back-pulling auxiliary device. Background Art

[0002] Horizontal directional drilling construction refers to drilling a small diameter guide hole through the drill rod and drill bit according to the pre-set trajectory, then removing the drill bit on the drill rod head at the excavation end of the guide hole, installing the reamer to pull back the hole, and when the hole is expanded to meet the requirements, connect the rotary joint, the pipe head and the pipeline at the rear end of the reamer, pull the pipeline back into the guide hole, and then lay the underground pipeline. This technology is currently widely used in the laying of water supply, electricity, telecommunications, natural gas, coal gas, oil and other pipelines, and can be constructed in most non-hard rock areas.

[0003] When the pipeline is dragged into the unearthed end, since both ends of the guide hole are inclined, the pipeline bends under the action of gravity when entering the unearthed end. If the bending angle is too large, it is easy to cause damage to the pipeline; and the bending of the pipeline will also cause friction with the ground at the port of the unearthed end, especially when there are relatively hard stones on the ground, which will also cause damage to the pipeline.

[0004] In the prior art, a Chinese patent with a publication number of CN220378213U is proposed to solve the above-mentioned technical problems. The technical solution disclosed in the patent document is as follows: A horizontal directional drilling pipeline back-pulling auxiliary device, specifically related to the field of pipeline construction technology, solves the technical problem that the pipeline bends under the action of gravity when entering the unearthed end, and if the bending angle is too large, it is easy to cause damage to the pipeline. The utility model includes a base, a top plate is provided above the base, one end of the top plate is hinged to one end of the base through a first hinge seat, and a lifting mechanism for lifting the top plate is also provided between the top plate and the base; a plurality of guide receiving mechanisms are provided on the top plate, and the guide receiving mechanisms are fitted with the outer wall of the existing pipeline. The purpose is that the guide receiving mechanism receives the pipeline to prevent the pipeline from bending under the action of gravity due to the inclination of the guide hole, thereby avoiding damage; and the guide receiving mechanism lifts the pipeline to prevent the pipeline from rubbing against the ground at the port of the unearthed end, thereby causing damage.

[0005] Although this prior art can prevent the pipeline from bending under the action of gravity due to the inclination of the guide hole and avoid damage, and the guide receiving mechanism holds up the pipeline to prevent the pipeline from rubbing against the ground at the port of the unearthed end and causing damage, the pipeline is placed on the receiving mechanism in an overlapping manner. As a result, the pipeline is easily out of the range of the receiving mechanism when subjected to forces in other directions, resulting in pipeline dislocation and affecting the subsequent construction work. Utility Model Content

[0006] The utility model aims to provide a horizontal directional drilling pipeline pulling back auxiliary device to solve the problems raised in the above background technology.

[0007] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0008] A horizontal directional drilling pipeline pull-back auxiliary device comprises a base, a pipeline, a rubber bonding layer, an adjustment plate and a driving hydraulic rod, wherein the outer wall of the pipeline is sleeved with an annular positioning frame for positioning and guiding the pipeline, and the inner wall of the annular positioning frame is provided with a pushing and clamping assembly for clamping the outer wall of the pipeline in an annular array;

[0009] The annular positioning frame comprises an upper positioning arc plate and a lower positioning arc plate fixedly connected at both ends of the upper positioning arc plate by positioning bolts, and the bottom surface of the lower positioning arc plate is fixedly connected to the upper surface of the adjustment plate by a fixed bottom plate;

[0010] The pushing and clamping assembly includes an elastic clamping arc plate located on the inner wall of the upper positioning arc plate, a guide slide rod rotatably connected to the outer arc surface of the elastic clamping arc plate, a pushing arc plate slidably connected to the outer wall of the guide slide rod, and a clamping and pushing hydraulic rod fixedly connected at the center of the outer arc surface of the pushing arc plate, a buffer spring is sleeved on the outer wall of the guide slide rod, a ball seat is fixedly connected to the center of the outer arc surface of the elastic clamping arc plate, and a ball is movably connected to the inner wall of the ball seat.

[0011] A further improvement of the technical solution of the utility model is that the inner arc surface of the elastic clamping arc plate away from the guide slide rod is fixedly connected to a rubber bonding layer for bonding and buffering with the outer wall of the pipeline.

[0012] A further improvement of the technical solution of the utility model is that one end of the guide slide rod away from the elastic clamping arc plate movably penetrates the outer wall of the upper positioning arc plate, the outer wall of the upper positioning arc plate is provided with a mounting groove, and the inner wall of the mounting groove is fixedly connected to the outer wall of the clamping and pushing hydraulic rod.

[0013] A further improvement of the technical solution of the utility model is that one end of the buffer spring is fixedly connected to one side of the pushing arc plate, and the other end of the buffer spring overlaps the outer arc surface of the elastic clamping arc plate.

[0014] A further improvement of the technical solution of the utility model is that: the number of the annular positioning frames is several, and the several annular positioning frames are distributed and arranged on the outer wall of the pipeline.

[0015] A further improvement of the technical solution of the utility model is that the two ends of the upper positioning arc plate are overlapped with the two ends of the lower positioning arc plate.

[0016] A further improvement of the technical solution of the utility model is that the inner arc surface of the rubber bonding layer overlaps the outer wall of the pipe.

[0017] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0018] The utility model provides a horizontal directional drilling pipeline back-pulling auxiliary device, which utilizes the coordinated use of an annular positioning frame, an elastic clamping arc plate, a pushing arc plate, a clamping and pushing hydraulic rod, a ball seat, a ball, a guide slide bar and a buffer spring, so that the pipeline can be positioned at multiple points in the inner wall of the annular positioning frame for limited fixation, and then the pipeline is prevented from escaping from the range of the receiving mechanism, resulting in the problem of pipeline misalignment. At the same time, pipelines of different specifications can be clamped and limited, and stability can be maintained.

[0019] The utility model provides a horizontal directional drilling pipeline pulling back auxiliary device, which utilizes the coordinated use of an upper positioning arc plate, a lower positioning arc plate and positioning bolts so that the upper positioning arc plate and the lower positioning arc plate can be quickly disassembled as needed, thereby reducing the volume of the device and facilitating subsequent transfer, and can also be quickly assembled as needed for convenient subsequent use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the utility model;

[0021] Figure 2 It is a left-side structural schematic diagram of the utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the annular positioning frame of the utility model;

[0023] Figure 4 It is an enlarged schematic diagram of the structure at A of the utility model;

[0024] Figure 5 It is a bottom structural schematic diagram of the utility model.

[0025] In the figure: 1. base; 2. pipeline; 3. adjustment plate; 4. annular positioning frame; 5. driving hydraulic rod; 6. pushing clamping assembly; 7. fixing bottom plate; 8. upper positioning arc plate; 9. lower positioning arc plate; 10. positioning bolt; 11. clamping and pushing hydraulic rod; 12. pushing arc plate; 13. elastic clamping arc plate; 14. rubber bonding layer; 15. guide slide rod; 16. buffer spring; 17. ball seat; 18. ball. DETAILED DESCRIPTION

[0026] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] The present invention is further described in detail below in conjunction with the embodiments:

[0028] like Figure 1-5 As shown, the utility model provides a horizontal directional drilling pipeline back-pulling auxiliary device, including a base 1, a pipeline 2, a rubber bonding layer 14, an adjustment plate 3 and a driving hydraulic rod 5. The outer wall of the pipeline 2 is sleeved with an annular positioning frame 4 for positioning and guiding it, and the inner wall of the annular positioning frame 4 is distributed with a pushing and clamping component 6 for clamping the outer wall of the pipeline 2 in an annular array.

[0029] The annular positioning frame 4 includes an upper positioning arc plate 8 and a lower positioning arc plate 9 whose two ends are fixedly connected by positioning bolts 10 . The bottom surface of the lower positioning arc plate 9 is fixedly connected to the upper surface of the adjustment plate 3 by a fixed bottom plate 7 .

[0030] The pushing and clamping assembly 6 includes an elastic clamping arc plate 13 located on the inner wall of the upper positioning arc plate 8, a guide slide rod 15 rotatably connected to the outer arc surface of the elastic clamping arc plate 13, a pushing arc plate 12 slidably connected to the outer wall of the guide slide rod 15, and a clamping and pushing hydraulic rod 11 fixedly connected at the center of the outer arc surface of the pushing arc plate 12, a buffer spring 16 is sleeved on the outer wall of the guide slide rod 15, a ball seat 17 is fixedly connected to the center of the outer arc surface of the elastic clamping arc plate 13, and a ball 18 is movably connected to the inner wall of the ball seat 17.

[0031] like Figure 1-5 As shown, based on Example 1, the utility model provides a technical solution: preferably, the inner arc surface of the elastic clamping arc plate 13 away from the guide slide rod 15 is fixedly connected to the rubber bonding layer 14 for bonding and buffering with the outer wall of the pipe 2.

[0032] One end of the guide slide bar 15 away from the elastic clamping arc plate 13 movably penetrates the outer wall of the upper positioning arc plate 8 . The outer wall of the upper positioning arc plate 8 is provided with a mounting groove, and the inner wall of the mounting groove is fixedly connected to the outer wall of the clamping and pushing hydraulic rod 11 .

[0033] One end of the buffer spring 16 is fixedly connected to one side of the pushing arc plate 12 , and the other end of the buffer spring 16 overlaps the outer arc surface of the elastic clamping arc plate 13 .

[0034] There are a plurality of annular positioning frames 4 , which are distributed and arranged on the outer wall of the pipeline 2 .

[0035] The two ends of the upper positioning arc plate 8 overlap the two ends of the lower positioning arc plate 9, and the inner arc surface of the rubber bonding layer 14 overlaps the outer wall of the pipe 2. When the upper positioning arc plate 8 needs to be disassembled, the positioning bolts 10 connecting it with the end of the lower positioning arc plate 9 are removed, and then the lower positioning arc plate 9 and the upper positioning arc plate 8 can be separated, thereby reducing the overall volume of the device and facilitating subsequent transfer work.

[0036] The working principle of the horizontal directional drilling pipeline pull-back auxiliary device is described in detail below.

[0037] like Figure 1-5 As shown, when in use, the pipe 2 is placed in the annular positioning frame 4, and then the clamping and pushing hydraulic rod 11 is started, so that the clamping and pushing hydraulic rod 11 pushes the arc plate 12 to approach the pipe 2. After the arc plate 12 is pushed by force, it will drive the elastic clamping arc plate 13 and the rubber bonding layer 14 to fit the pipe 2. When the rubber bonding layer 14 fits the pipe 2, it will be compressed by force. The buffer spring 16 is buffered. When the clamping assembly 6 is pushed to clamp the pipe 2 stably, the angle of the adjustment plate 3 can be pushed and adjusted by driving the hydraulic rod 5. After the angle is adjusted to the right position, the rolling effect of the ball 18 on the inner wall of the ball seat 17 can be used to carry out subsequent work processes.

[0038] When the diameter of the pipe 2 is reduced, when the elastic clamping arc plate 13 fits against the outer wall of the pipe 2, after the elastic clamping arc plate 13 is compressed, under the push of the reaction force of the buffer spring 16, the two ends are deformed and fit closer to the outer wall of the pipe 2, thereby fixing and limiting the pipe 2. When the angle is adjusted to the right position, the clamping push hydraulic rod 11 pulls the push arc plate 12 outward by a certain distance, thereby releasing the fit and fixing effect of the two ends of the elastic clamping arc plate 13 on the outer wall of the pipe 2.

[0039] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A horizontal directional drilling pipeline pull-back auxiliary device, comprising a base (1), a pipeline (2), a rubber bonding layer (14), an adjustment plate (3) and a driving hydraulic rod (5), characterized in that: The outer wall of the pipe (2) is sleeved with an annular positioning frame (4) for positioning and guiding the pipe (2), and the inner wall of the annular positioning frame (4) is provided with a pushing and clamping assembly (6) for clamping the outer wall of the pipe (2) in an annular array; The annular positioning frame (4) comprises an upper positioning arc plate (8) and a lower positioning arc plate (9) fixedly connected at both ends of the upper positioning arc plate (8) by positioning bolts (10), and the bottom surface of the lower positioning arc plate (9) is fixedly connected to the upper surface of the adjustment plate (3) by a fixed bottom plate (7); The pushing and clamping assembly (6) comprises an elastic clamping arc plate (13) located on the inner wall of the upper positioning arc plate (8), a guide slide bar (15) rotatably connected to the outer arc surface of the elastic clamping arc plate (13), a pushing arc plate (12) slidably connected to the outer wall of the guide slide bar (15), and a clamping and pushing hydraulic rod (11) fixedly connected at the center of the outer arc surface of the pushing arc plate (12), a buffer spring (16) is sleeved on the outer wall of the guide slide bar (15), a ball seat (17) is fixedly connected at the center of the outer arc surface of the elastic clamping arc plate (13), and a ball (18) is movably connected to the inner wall of the ball seat (17).

2. The horizontal directional drilling pipeline pulling back auxiliary device according to claim 1, characterized in that: The inner arc surface of the elastic clamping arc plate (13) away from the guide slide rod (15) is fixedly connected to a rubber bonding layer (14) for bonding and buffering with the outer wall of the pipe (2).

3. The horizontal directional drilling pipeline pulling-back auxiliary device according to claim 1 is characterized in that: One end of the guide slide bar (15) away from the elastic clamping arc plate (13) movably penetrates the outer wall of the upper positioning arc plate (8), and the outer wall of the upper positioning arc plate (8) is provided with a mounting groove, and the inner wall of the mounting groove is fixedly connected to the outer wall of the clamping and pushing hydraulic rod (11).

4. The horizontal directional drilling pipeline pulling-back auxiliary device according to claim 1, characterized in that: One end of the buffer spring (16) is fixedly connected to one side of the pushing arc plate (12), and the other end of the buffer spring (16) overlaps the outer arc surface of the elastic clamping arc plate (13).

5. The horizontal directional drilling pipeline pulling-back auxiliary device according to claim 1, characterized in that: The number of the annular positioning frames (4) is a plurality, and the plurality of annular positioning frames (4) are distributed and arranged on the outer wall of the pipe (2).

6. The horizontal directional drilling pipeline pulling-back auxiliary device according to claim 1, characterized in that: The two ends of the upper positioning arc plate (8) are overlapped with the two ends of the lower positioning arc plate (9).

7. The horizontal directional drilling pipeline pulling-back auxiliary device according to claim 1, characterized in that: The inner arc surface of the rubber bonding layer (14) overlaps the outer wall of the pipe (2).

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