Variable-angle adjusting mechanism for crossbeam of horizontal directional drilling machine

Abstract

The utility model relates to the technical field of horizontal directional drilling machines, and discloses a variable angle adjusting mechanism of a crossbeam of a horizontal directional drilling machine, which comprises a main big arm, an inner rotating barrel is movably connected in the main big arm, the bottom end of the inner rotating barrel is in threaded connection with a drill bit, and a circular groove is formed in the drill bit. A plurality of sets of racks are fixedly connected to the inner wall of the circular groove, one side of a first gear is meshed with the inner wall of each rack, a second gear is meshed with the other side of each first gear, and the output end of a first motor is fixedly connected to the interior of each second gear. According to the variable-angle adjusting mechanism of the horizontal directional drilling machine girder, after a drill bit makes contact with the ground, a first motor is started, the angle of a drilling tool on the drill bit is adjusted, the angle of the drilling tool is made to deviate, the position of the drill bit drilling soil under the ground is adjusted, a drilling route is adjusted, and the angle of the drilling tool is adjusted so that the variable-angle adjusting mechanism can better adapt to the field environment; and the drilling deviation caused by a fixed angle is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of horizontal directional drilling machines, in particular to a variable angle adjustment mechanism for a beam of a horizontal directional drilling machine. Background Art

[0002] In a horizontal directional drill (HDD), the variable angle adjustment mechanism of the beam is an important mechanical device, which is used to adjust the angle of the drill beam to adapt to different drilling angles and path requirements. By adjusting the angle of the beam, the drill can drill from the surface into the ground and change the drilling direction as needed, which is crucial for avoiding underground obstacles or meeting specific engineering needs. The operator sends instructions through the control system, and the hydraulic cylinder or electric push rod acts according to the instructions, pushing or pulling the hinge point, so that the beam rotates around the hinge point, thereby changing its angle. The whole process requires precise control to ensure that the drill beam maintains a stable posture and can accurately reach the required angle.

[0003] In the process of implementing this application, the inventor found that there are at least the following problems in this technology:

[0004] (1) The drill bit position of the horizontal directional drilling rig cannot be adjusted and cannot be optimized according to different geological conditions, resulting in low drilling efficiency in hard rock, soft soil or other complex formations, making it difficult to flexibly deal with underground obstacles, increasing construction difficulty and risk. Since the drill bit position cannot be adjusted, it is difficult to accurately control the drilling path, making it easy for the drill bit to deviate from the designed route, affecting the construction quality. The drill bit position cannot be adjusted, resulting in the inability to achieve the optimal drilling angle and pressure distribution, increasing drilling time and energy consumption, requiring frequent shutdowns for corrections and repositioning, and reducing overall construction efficiency.

[0005] (2) The drilling angle cannot be flexibly adjusted, making it difficult to adapt to various complex terrains and underground conditions. When faced with obstacles, it is impossible to bypass or adjust the path, which can easily lead to construction difficulties or failures. Since the angle cannot be fine-tuned, the path control of the drill bit is not precise enough and may deviate from the designed route, affecting the construction quality. The drilling rig works at an inappropriate angle, which may cause the equipment to be unstable or overturned, posing a safety hazard. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a variable angle adjustment mechanism for a horizontal directional drilling rig beam, which has the advantages of adjustable drill cutter angle and adjustable drilling rig boom angle, solving the problems of the inability to adjust the underground drill bit angle and the fixed drilling rig boom angle.

[0007] The utility model provides the following technical solution: a variable angle adjustment mechanism for a horizontal directional drilling rig beam, comprising a main arm, an inner rotating barrel movably connected inside the main arm, a drill bit threadedly connected to the bottom end of the inner rotating barrel, a circular groove is provided inside the drill bit, and a plurality of groups of racks are fixedly connected to the inner wall of the circular groove, one side of a gear one is meshed with the inner wall of the gear one, a gear two is meshed with the other side of the gear one, an output end of a motor one is fixedly connected to the inside of the gear two, a drill bit is fixedly connected to the bottom end of the motor one, and a drill cutter is fixedly connected to the bottom end of the gear one.

[0008] Preferably, a main base plate is provided at the bottom end of the main boom, an adjustment frame is fixedly connected to the top end of the main base plate, a threaded rod is movably sleeved on the adjustment frame, an outer wall of the threaded rod is threadedly connected to a connecting block two, an outer wall of the connecting block two is fixedly connected to two groups of connecting rods four, an outer wall of the connecting rod four is fixedly connected to a connecting rod two, a side of the connecting rod two is fixedly connected to a connecting rod five, and an outer wall of the connecting rod five is movably sleeved on the boom base plate.

[0009] Preferably, a slot is provided inside the drill bit, and a connecting rod three is movably sleeved inside the slot, and a gear one is fixedly connected to the outer wall of the connecting rod three.

[0010] Preferably, the side surface of the threaded rod is fixedly connected to the second motor, and the side surface of the second motor is fixedly connected to the outer wall of the adjustment frame.

[0011] Preferably, a slide groove is provided inside the adjustment frame, and a connecting rod four is slidably sleeved inside the slide groove.

[0012] Preferably, two groups of extension plates are fixedly connected to the top of the main base plate, a connecting block 1 is movably sleeved on the inner wall of the extension plate, and the upper arm base plates are fixedly connected to the opposite sides of the two groups of connecting blocks 1.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The variable angle adjustment mechanism of the beam of the horizontal directional drilling rig starts motor 1 when the drill bit contacts the ground. The output end of motor 1 drives gear 2 to rotate inside the drill bit and meshes with gear 1 at the same time, further driving connecting rod 3 to rotate inside the drill bit, thereby adjusting the position of connecting rod 3 and gear 1, and then adjusting the angle of the drill bit at the drill bit, so that the angle of the drill bit is offset, thereby adjusting the position of the drill bit drilling under the ground, and adjusting the drilling route. The drilling rig with adjustable drill bit angle can easily adapt to different drilling needs, whether it is vertical, horizontal or inclined drilling, it can be realized. Under irregular or restricted terrain conditions, adjusting the drill bit angle can better adapt to the on-site environment, improve operation flexibility, and can adjust the angle according to actual conditions to reduce drilling deviations caused by fixed angles.

[0015] 2. The variable angle adjustment mechanism of the beam of the horizontal directional drilling rig is to park the drilling rig at a suitable position and then start the motor 2. The output end of the motor 2 drives the threaded rod to rotate inside the adjustment frame, thereby driving the connecting block 2 to move inside the adjustment frame, and the connecting rods 4 on both sides move synchronously, synchronously driving the connecting rod 2 to rotate inside the bottom plate of the boom with the connecting rod 5 as the center of the circle, thereby adjusting the height of one end of the bottom plate of the boom, so that the main boom fixedly connected at the top adjusts its angle, thereby adjusting the angle between the drill bit and the ground. By adjusting the angle of the boom, the position of the drilling rig can be avoided from being frequently moved, thereby saving time and manpower and improving the overall work efficiency. Adjusting the angle of the boom can better control the direction and depth of the drilling hole and ensure the high precision of the drilling operation, which is particularly important in engineering projects that require precise positioning. In confined spaces or complex terrains, the drilling rig with an adjustable boom can flexibly adjust its posture to adapt to narrow or irregular working environments, so that the drilling task can be successfully completed under these difficult conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall external structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of the drill bit adjustment mechanism of the utility model;

[0018] Figure 3 This is a schematic diagram of the transverse cross-sectional structure of the upper arm adjustment mechanism of the utility model;

[0019] Figure 4 It is a schematic diagram of the vertical cross-section structure of the big arm adjustment mechanism of the utility model.

[0020] In the figure: 1. main boom; 2. inner rotating barrel; 3. drill bit; 4. drill cutter; 5. boom base plate; 6. extension plate; 7. connecting block one; 8. main base plate; 9. adjustment frame; 10. connecting rod two; 11. gear one; 12. motor one; 13. rack; 14. gear two; 15. connecting rod three; 16. connecting block two; 17. motor two; 18. threaded rod; 19. connecting rod four; 20. connecting rod five. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Reference Figure 1-4 A variable angle adjustment mechanism for a horizontal directional drilling rig beam comprises a main boom 1, an inner rotating barrel 2 is movably connected inside the main boom 1, a drill bit 3 is threadedly connected to the bottom end of the inner rotating barrel 2, a circular groove is provided inside the drill bit 3, and a plurality of racks 13 are fixedly connected to the inner wall of the circular groove, one side of a gear 11 is meshed with the inner wall of the gear 11, a gear 2 14 is meshed with the other side of the gear 11, an output end of a motor 12 is fixedly connected to the inside of the gear 2 14, and a drill bit 3 is fixedly connected to the bottom end of the motor 12, The bottom end of gear 11 is fixedly connected with a drill cutter 4. When the drill bit 3 touches the ground, the motor 12 is started. The output end of the motor 12 drives the gear 2 14 to rotate inside the drill bit 3, and at the same time engages with the gear 11, further driving the connecting rod 3 15 to rotate inside the drill bit 3, thereby adjusting the position of the connecting rod 3 15 and the gear 11, and then adjusting the angle of the drill cutter 4 at the drill bit 3, so that the drill cutter angle is offset, thereby adjusting the position of the drill bit 3 drilling the soil under the ground and adjusting the drilling route.

[0023] See also Figure 3 , 4 A main base plate 8 is provided at the bottom end of the main boom 1, and an adjustment frame 9 is fixedly connected to the top of the main base plate 8. A threaded rod 18 is movably sleeved on the adjustment frame 9. The outer wall of the threaded rod 18 is threadedly connected to a connecting block 2 16. The outer wall of the connecting block 2 16 is fixedly connected to two groups of connecting rods 4 19. The outer wall of the connecting rod 4 19 is fixedly connected to a connecting rod 2 10. The side of the connecting rod 2 10 is fixedly connected to a connecting rod 5 20. The outer wall of the connecting rod 5 20 is movably sleeved on the boom base plate 5. The drilling rig is parked in a suitable position, and then the motor 2 17 is started. The output end of the motor 2 17 drives the threaded rod 18 to rotate inside the adjustment frame 9, thereby driving the connecting block 2 16 to move inside the adjustment frame 9. The connecting rods 4 19 on both sides move synchronously, and synchronously drive the connecting rod 2 10 to rotate inside the boom base plate 5 with the connecting rod 5 20 as the center of the circle, thereby adjusting the height of one end of the boom base plate 5, so that the main boom 1 fixedly connected at the top adjusts its angle, thereby adjusting the angle between the drill bit 3 and the ground.

[0024] See also Figure 2 A slot is provided inside the drill bit 3, and a connecting rod 3 15 is movably sleeved inside the slot, and a gear 1 1 is fixedly connected to the outer wall of the connecting rod 3 15.

[0025] See also Figure 3 The side of the threaded rod 18 is fixedly connected to the motor 2 17 , and the side of the motor 2 17 is fixedly connected to the outer wall of the adjustment frame 9 .

[0026] See also Figure 3 A slide groove is provided inside the adjustment frame 9, and a connecting rod 19 is slidably sleeved inside the slide groove.

[0027] See also Figure 1 The top of the main bottom plate 8 is fixedly connected with two groups of extension plates 6, the inner wall of the extension plate 6 is movably sleeved with a connecting block 7, and the opposite sides of the two groups of connecting blocks 7 are fixedly connected with the upper arm bottom plate 5.

[0028] Working principle: when in use, the staff first parks the drilling rig in a suitable position, and then starts the motor 2 17. The output end of the motor 2 17 drives the threaded rod 18 to rotate inside the adjustment frame 9, thereby driving the connecting block 2 16 to move inside the adjustment frame 9, and the connecting rods 4 19 on both sides move synchronously, and synchronously drive the connecting rod 2 10 to rotate inside the boom base plate 5 with the connecting rod 5 20 as the center of the circle, thereby adjusting the height of one end of the boom base plate 5, so that the main boom 1 fixedly connected at the top adjusts its angle, thereby adjusting the angle between the drill bit 3 and the ground. When the drill bit 3 contacts the ground, start the motor 12. The output end of the motor 12 drives the gear 2 14 to rotate inside the drill bit 3, and at the same time meshes with the gear 1 11, further driving the connecting rod 3 15 to rotate inside the drill bit 3, thereby adjusting the position of the connecting rod 3 15 and the gear 1 11, and then adjusting the angle of the drill bit 4 at the drill bit 3, so that the drill bit angle is offset, thereby adjusting the position of the drill bit 3 drilling soil under the ground, and adjusting the drilling route.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A variable angle adjustment mechanism for a horizontal directional drilling rig beam, characterized in that: The invention comprises a main arm (1), wherein the main arm (1) is movably connected to an inner rotating barrel (2), the bottom end of the inner rotating barrel (2) is threadedly connected to a drill bit (3), a circular groove is provided inside the drill bit (3), and the inner wall of the circular groove is fixedly connected to a plurality of racks (13), the inner wall of the rack (13) is meshed with one side of a gear one (11), the other side of the gear one (11) is meshed with a gear two (14), the inside of the gear two (14) is fixedly connected to the output end of a motor one (12), the bottom end of the motor one (12) is fixedly connected to the drill bit (3), and the bottom end of the gear one (11) is fixedly connected to a drill bit (4).

2. The variable angle adjustment mechanism of a horizontal directional drilling rig beam according to claim 1, characterized in that: A main base plate (8) is provided at the bottom end of the main boom (1), the top end of the main base plate (8) is fixedly connected to an adjustment frame (9), the adjustment frame (9) is movably sleeved with a threaded rod (18), the outer wall of the threaded rod (18) is threadedly connected to a connecting block 2 (16), the outer wall of the connecting block 2 (16) is fixedly connected to two groups of connecting rods 4 (19), the outer wall of the connecting rod 4 (19) is fixedly connected to a connecting rod 2 (10), the side of the connecting rod 2 (10) is fixedly connected to a connecting rod 5 (20), and the outer wall of the connecting rod 5 (20) is movably sleeved with the boom base plate (5).

3. The variable angle adjustment mechanism of a horizontal directional drilling rig beam according to claim 1, characterized in that: The drill bit (3) is provided with a slotted hole inside, and a connecting rod three (15) is movably sleeved inside the slotted hole, and a gear one (11) is fixedly connected to the outer wall of the connecting rod three (15).

4. The variable angle adjustment mechanism of a horizontal directional drilling rig beam according to claim 2, characterized in that: The side surface of the threaded rod (18) is fixedly connected to the second motor (17), and the side surface of the second motor (17) is fixedly connected to the outer wall of the adjustment frame (9).

5. The variable angle adjustment mechanism of a horizontal directional drilling rig beam according to claim 2, characterized in that: A sliding groove is provided inside the adjustment frame (9), and a connecting rod 4 (19) is slidably sleeved inside the sliding groove.

6. The variable angle adjustment mechanism of a horizontal directional drilling rig beam according to claim 2, characterized in that: The top of the main bottom plate (8) is fixedly connected to two groups of extension plates (6), the inner wall of the extension plate (6) is movably sleeved with a connecting block (7), and the opposite sides of the two groups of connecting blocks (7) are fixedly connected to the upper arm bottom plate (5).

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