Horizontal directional drilling machine auxiliary device capable of improving drilling precision

Abstract

The utility model discloses a horizontal directional drilling machine auxiliary device capable of improving drilling precision, relates to the technical field of horizontal directional drilling machine auxiliary devices, and solves the problems that an existing horizontal directional drilling machine is large in overall size, inconvenient to enter a site, not easy to install, different in working site, unstable in supporting and difficult to control, and the horizontal directional drilling machine cannot be used easily when used. The horizontal directional drilling machine comprises a base, a barrel is fixedly installed on the base, the upper end of the barrel is of an open structure, and a lifting rod is installed in the barrel in an inserted mode. The angle direction of the drill rod is adjusted through the rotating assembly, the drill rod is supported through the three-point supporting assembly, displacement of the drill rod is prevented, and the stability and adjustable diversity of the horizontal directional drilling machine are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of auxiliary devices for horizontal directional drilling rigs, specifically an auxiliary device for horizontal directional drilling rigs that improves drilling accuracy. Background Technology

[0002] Horizontal directional drilling rigs are construction machines used to lay various underground utilities (pipelines, cables, etc.) without excavating the ground surface. They are widely used in the construction of flexible pipelines for water supply, electricity, telecommunications, natural gas, coal gas, and oil. They are suitable for sandy soil, clay, and other soil conditions, but not suitable for soils with high groundwater levels or gravel strata. They can be used in most non-hard rock areas in my country.

[0003] Existing horizontal directional drilling rigs are generally large, making them inconvenient to bring to the site and difficult to install. Depending on the work site, unstable support can occur, making them difficult to control. Furthermore, when using horizontal directional drilling rigs, it is not easy to adjust the angle of the rig. An improper angle can increase resistance and cause the rig to deviate, affecting the drilling quality. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an auxiliary device for horizontal directional drilling rigs that improves drilling accuracy. It solves the technical problems of existing horizontal directional drilling rigs being large and inconvenient to bring to the site and difficult to install, having unstable support and being difficult to control depending on the working site, and having difficulty adjusting the angle of the horizontal directional drilling rig when using it. An improper angle will increase resistance and cause the drilling rig to deviate, affecting the drilling quality.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an auxiliary device for improving drilling accuracy in a horizontal directional drilling rig, comprising a base, on which a cylinder is fixedly mounted. The upper end of the cylinder has an open structure, and a lifting rod is inserted into the cylinder. A lifting assembly is provided between the lifting rod and the cylinder. The upper end of the lifting rod is exposed outside the cylinder. An annular cylinder is provided at the upper end of the lifting rod. An inner cavity is provided inside the annular cylinder. A three-point support assembly is provided inside the inner cavity. A rotating assembly is provided between the lifting rod and the annular cylinder.

[0006] Preferably, the lifting assembly includes a first lead screw, which is rotatably mounted on the lower wall of the cylinder. The lower end of the lifting rod has a first threaded groove, and the upper end of the first lead screw is meshed with the first threaded groove. The cylinder has a rectangular cross-sectional shape, and the lifting rod has a rectangular cross-sectional shape. A first driven gear is fixedly mounted on the first lead screw. A first shaft is rotatably mounted on the rear wall of the cylinder. One end of the first shaft is located inside the cylinder, and the other end is exposed outside the cylinder. A first driving gear is fixedly mounted on one end of the first shaft, and the first driving gear meshes with the first driven gear.

[0007] Preferably, a second shaft is fixedly installed on the front wall of the inner cylinder, and a support gear is rotatably installed on the other end of the second shaft. The support gear is meshed with a first driven gear, and the first driving gear, the first driven gear, and the support gear are all bevel gear structures.

[0008] Preferably, the rotating assembly includes a bearing plate, which is fixedly installed on the upper end of the lifting rod. A cover plate is fixedly installed on the lower outer wall of the annular cylinder. The cover plate is rotatably installed on the bearing plate. An insertion hole is opened on the side wall of the cover plate, and a bolt is inserted into the insertion hole. A plurality of limiting thread grooves are opened on the side wall of the bearing plate, and the bolt matches the limiting thread grooves.

[0009] Preferably, the three-point support assembly includes a turntable rotatably mounted within the inner cavity. A driving gear ring is fixedly mounted on the front wall of the turntable, and a worm gear is fixedly mounted on the rear wall of the turntable. A worm is rotatably mounted within the inner cavity and above the worm gear, meshing with the worm gear. One end of the worm protrudes from the annular cylinder. Three housings are fixedly mounted outside the annular cylinder, with one end of each housing located within the inner cavity. An internally threaded sleeve is rotatably mounted on one end of each housing. A second driven gear is fixedly mounted on the outer wall of the internally threaded sleeve, meshing with the driving gear ring. Sliding grooves are respectively formed on the two inner walls of each housing, and sliders are slidably mounted within these grooves. Threaded columns are fixedly mounted between the sliders, meshing with the internally threaded sleeves. The lower end of the threaded column protrudes from the housing and penetrates the annular cylinder. A clamping plate is fixedly mounted on the lower end of the threaded column, and a ball bearing is rotatably mounted on the clamping plate.

[0010] Preferably, self-locking casters are installed at the four corners of the lower wall of the base, and a through hole is provided on the base on one side of the self-locking casters, with a grounding pin inserted into the through hole.

[0011] Beneficial effects

[0012] This invention provides an auxiliary device for horizontal directional drilling rigs to improve drilling accuracy. It solves the technical problems of existing horizontal directional drilling rigs being large, inconvenient to access and install, prone to instability and difficult to control depending on the work site, and difficult to adjust the angle of the horizontal directional drilling rig during use. An improper angle can increase resistance and cause the rig to deviate, affecting drilling quality. This invention adjusts the height of the lifting rod through a lifting assembly, thereby adjusting the horizontal drilling height of the drill rod. A rotating assembly adjusts the angle of the drill rod, and a three-point support assembly supports the drill rod to prevent displacement, improving the stability and adjustability of the horizontal directional drilling rig. Attached Figure Description

[0013] Figure 1This is a front view structural schematic diagram of an auxiliary device for improving drilling accuracy for a horizontal directional drilling rig, as described in this utility model.

[0014] Figure 2 This is a schematic diagram of the lifting component structure of the horizontal directional drilling machine auxiliary device for improving drilling accuracy as described in this utility model.

[0015] Figure 3 This is a schematic diagram of the three-point support assembly structure of an auxiliary device for improving drilling accuracy in a horizontal directional drilling rig, as described in this utility model.

[0016] Figure 4 This is a side view of the three-point support assembly of the horizontal directional drilling rig auxiliary device for improving drilling accuracy, as described in this utility model.

[0017] In the diagram: 1. Base; 2. Cylinder; 3. Lifting rod; 4. Annular cylinder; 5. First lead screw; 6. First driven gear; 7. First shaft; 8. First driving gear; 9. Second shaft; 10. Support gear; 11. Bearing plate; 12. Cover plate; 13. Bolt; 14. Limiting threaded groove; 15. Turntable; 16. Driving gear ring; 17. Worm gear; 18. Worm; 19. Housing; 20. Second driven gear; 21. Slide groove; 22. Slider; 23. Threaded column; 24. Ball bearing; 25. Clamping plate; 26. Grounding pin. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Its detailed connection method is a well-known technology in this field. The following mainly introduces the working principle and process, and the specific work is as follows.

[0020] Please see Figure 1-4 This utility model provides a technical solution: an auxiliary device for a horizontal directional drilling rig to improve drilling accuracy, including a base 1, a cylinder 2 fixedly installed on the base 1, the upper end of the cylinder 2 having an open structure, a lifting rod 3 inserted inside the cylinder 2, a lifting assembly between the lifting rod 3 and the cylinder 2, the upper end of the lifting rod 3 being exposed outside the cylinder 2, an annular cylinder 4 being provided at the upper end of the lifting rod 3, an inner cavity being provided inside the annular cylinder 4, a three-point support assembly being provided in the inner cavity, and a rotating assembly being provided between the lifting rod 3 and the annular cylinder 4;

[0021] The lifting assembly moves the lifting rod 3 from inside the cylinder 2, thereby adjusting the total length of the lifting rod 3 and the cylinder 2, which in turn adjusts the drilling height of the drill rod. The rotating assembly is adjusted to adjust the drilling angle of the drill rod. The three-point support assembly provides support for the assembly, providing stable support for the drill rod during operation.

[0022] In this embodiment, the lifting assembly includes a first lead screw 5, which is rotatably mounted on the lower inner wall of the cylinder 2. The lower end of the lifting rod 3 has a first threaded groove, and the upper end of the first lead screw 5 is meshed with the first threaded groove. The cylinder 2 has a rectangular cross-sectional shape, and the lifting rod 3 has a rectangular cross-sectional shape. A first driven gear 6 is fixedly mounted on the first lead screw 5. A first shaft 7 is rotatably mounted on the rear wall of the cylinder 2. One end of the first shaft 7 is located inside the cylinder 2, and the other end is exposed outside the cylinder 2. A first driving gear 8 is fixedly mounted on one end of the first shaft 7, and the first driving gear 8 is meshed with the first driven gear 6.

[0023] Rotating the first shaft 7 drives the first driving gear 8 to rotate, which in turn drives the first driven gear 6 to rotate. The first driven gear 6 then drives the first lead screw 5 to rotate. Since the first lead screw 5 and the lifting rod 3 are connected by a first threaded groove, the rotation of the first lead screw 5 drives the lifting rod 3. The lifting rod 3 moves upward along the inside of the cylinder 2, thereby adjusting the drilling height of the drill rod.

[0024] In this embodiment, a second shaft 9 is fixedly installed on the inner front wall of the cylinder 2, and a support gear 10 is rotatably installed on the other end of the second shaft 9. The support gear 10 is meshed with the first driven gear 6. The first driving gear 8, the first driven gear 6 and the support gear 10 are all bevel gear structures.

[0025] In this embodiment, the rotating assembly includes a bearing plate 11, which is fixedly installed on the upper end of the lifting rod 3. A cover plate 12 is fixedly installed on the lower outer wall of the annular cylinder 4. The cover plate 12 is rotatably installed on the bearing plate 11. An insertion hole is opened on the side wall of the cover plate 12, and a bolt 13 is inserted into the insertion hole. A plurality of limiting thread grooves 14 are opened on the side wall of the bearing plate 11, and the bolt 13 matches the limiting thread grooves 14.

[0026] Rotate the cover plate 12 to adjust the angle of the annular cylinder 4, thereby adjusting the drilling angle of the drill rod. After adjustment, insert the bolt 13 into the insertion hole and screw the bolt 13 into the limiting thread groove 14 so that the cover plate 12 is limited to prevent the annular cylinder 4 from rotating.

[0027] In this embodiment, the three-point support assembly includes a turntable 15, which is rotatably mounted within the inner cavity. A drive gear ring 16 is fixedly mounted on the front wall of the turntable 15, and a worm gear 17 is fixedly mounted on the rear wall of the turntable 15. A worm 18 is rotatably mounted within the inner cavity and above the worm gear 17, meshing with the worm gear 17. One end of the worm 18 protrudes from the annular cylinder 4. Three housings 19 are fixedly mounted outside the annular cylinder 4, with one end of each housing 19 located within the inner cavity and one end of each housing 19 rotatably mounted with an internal thread. The inner threaded sleeve has a second driven gear 20 fixedly installed on its outer wall surface. The second driven gear 20 meshes with the driving gear ring 16. The inner side walls of the housing 19 are respectively provided with sliding grooves 21. A slider 22 is slidably installed in the sliding grooves 21. A threaded post 23 is fixedly installed between the sliders 22. The threaded post 23 meshes with the inner threaded sleeve. The lower end of the threaded post 23 is exposed outside the housing 19 and passes through the annular cylinder 4. A clamping plate 25 is fixedly installed at the lower end of the threaded post 23. A ball bearing 24 is rotatably installed on the clamping plate 25.

[0028] Rotating the worm gear 18 causes the worm wheel 17 to rotate, which in turn causes the turntable 15 to rotate. The turntable 15 then causes the drive gear ring 16 to rotate. The drive gear ring 16 has a conical structure, as does the second driven gear 20. When the drive gear ring 16 rotates, it meshes with the second driven gear 20, causing the second driven gear 20 to rotate simultaneously. The second driven gear 20 then drives the internal threaded sleeve to rotate. Since the internal threaded sleeve meshes with the threaded column 23, the rotation of the internal threaded sleeve drives the threaded column 23. This causes the threaded column 23 to move along the path of the slide groove 21 under the action of the slider 22, moving it towards the center of the annular cylinder 4. After the threaded column 23 pushes the clamping plate 25 into contact with the drill rod, the balls 24 facilitate the rotation and feeding of the drill rod.

[0029] In this embodiment, the four corners of the lower wall of the base 1 are respectively equipped with self-locking casters, and a through hole is provided on the base 1 and on the side of the self-locking casters, and a grounding pin 26 is inserted into the through hole.

[0030] The self-locking casters facilitate the movement of the base 1. When the base 1 is moved to the construction site, the grounding pin 26 is inserted through the through hole and into the ground, so that the base 1 is stably fixed.

[0031] It should be noted that in this paper, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

Claims

1. An apparatus for assisting a horizontal directional drill in improving the accuracy of a borehole, comprising a base (1), characterised in that, The base (1) is fixedly installed with a cylinder (2), the upper end of the cylinder (2) is open, a lifting rod (3) is inserted in the cylinder (2), a lifting assembly is arranged between the lifting rod (3) and the cylinder (2), the upper end of the lifting rod (3) is exposed outside the cylinder (2), an annular cylinder (4) is arranged at the upper end of the lifting rod (3), an inner cavity is arranged in the annular cylinder (4), a three-point support assembly is arranged in the inner cavity, and a rotating assembly is arranged between the lifting rod (3) and the annular cylinder (4).

2. A horizontal directional drill assist device for improving borehole accuracy according to claim 1, wherein The lifting assembly comprises a first lead screw (5), the first lead screw (5) is rotatably installed on the inner lower wall of the cylinder (2), a first threaded groove is formed in the lower end of the lifting rod (3), the upper end of the first lead screw (5) is engagedly connected in the first threaded groove, the cross section of the cylinder (2) is in a rectangular structure, the cross section of the lifting rod (3) is in a rectangular structure, a first driven gear (6) is fixedly installed on the first lead screw (5), a first shaft (7) is rotatably installed on the rear wall of the cylinder (2), one end of the first shaft (7) is located in the cylinder (2) and the other end is exposed outside the cylinder (2), a first driving gear (8) is fixedly installed on one end of the first shaft (7), and the first driving gear (8) is engagedly connected with the first driven gear (6).

3. A horizontal directional drill assist device for improving borehole accuracy according to claim 2, wherein A second shaft (9) is fixedly installed on the inner front wall of the cylinder (2), a support gear (10) is rotatably installed on the other end of the second shaft (9), the support gear (10) is engagedly connected with the first driven gear (6), and the first driving gear (8), the first driven gear (6) and the support gear (10) are all in a conical gear structure.

4. The horizontal directional drill assist device of claim 1, wherein The rotating assembly comprises a bearing disc (11), the bearing disc (11) is fixedly installed on the upper end of the lifting rod (3), a cover plate (12) is fixedly installed on the outer lower wall of the annular cylinder (4), the cover plate (12) is rotatably installed on the bearing disc (11), a plug hole is formed in the side wall of the cover plate (12), a bolt (13) is inserted in the plug hole, a plurality of limiting threaded grooves (14) are formed in the side wall of the bearing disc (11), and the bolt (13) is matched with the limiting threaded grooves (14).

5. The horizontal directional drill assist device of claim 1, wherein The three-point supporting assembly comprises a rotating disc (15) which is rotatably installed in the inner cavity, a driving gear ring (16) is fixedly installed on the front wall surface of the rotating disc (15), a worm wheel (17) is fixedly installed on the back wall surface of the rotating disc (15), a worm (18) is rotatably installed above the worm wheel (17) in the inner cavity, the worm (18) is in meshing connection with the worm wheel (17), one end of the worm (18) is exposed outside the annular barrel (4), three box bodies (19) are fixedly installed outside the annular barrel (4), one end of each box body (19) is located in the inner cavity, an internally-threaded sleeve is rotatably installed at one end of each box body (19), a second driven gear (20) is fixedly installed on the outer wall surface of the internally-threaded sleeve, the second driven gear (20) is in meshing connection with the driving gear ring (16), a sliding groove (21) is formed in each side wall surface of the box body (19), a sliding block (22) is slidably installed in each sliding groove (21), a threaded column (23) is fixedly installed between the sliding blocks (22), the threaded column (23) is in meshing connection with the internally-threaded sleeve, the threaded column (23) is exposed outside the box body (19) at the lower end and penetrates through the annular barrel (4), a clamping plate (25) is fixedly installed at the lower end of the threaded column (23), and a ball (24) is rotatably installed on the clamping plate (25).

6. The horizontal directional drill assist device of claim 1, wherein A self-locking universal wheel is installed at each corner of the lower wall surface of the base (1), a through hole is formed on the upper side of the base (1) and located at one side of the self-locking universal wheel, and a ground pin (26) is inserted into the through hole.

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