A preset trajectory type trenchless perforating assembly and perforating device

Abstract

This invention relates to a pre-trajectory trenchless drilling assembly, comprising a feed drive seat, an arc-shaped drill rod, and a flexible drive shaft. The feed drive seat includes a base body, a support leg mechanism, a hydraulic motor, and a guide structure. The support leg mechanism is located outside the base body, the hydraulic motor is located on the base body, and the output shaft of the hydraulic motor is equipped with a drive gear. The guide structure is located inside the base body. The arc-shaped drill rod is located within the guide structure of the feed drive seat. The hydraulic motor drives the arc-shaped drill rod to reciprocate relative to the feed drive seat via the drive gear. The arc-shaped drill rod includes an arc-shaped sliding frame, an arc-shaped rack, and a drill bit. The drill bit is located at the end of the arc-shaped sliding frame, and the arc-shaped rack meshes with the drive gear. This invention also relates to a drilling device. This invention drills holes along the outer wall of the pipeline without completely excavating and excavating the pipeline, forming a channel on the outside of the pipeline to address problems at any point on the outer wall of the pipeline, or to fix objects at any point on the outer wall of the pipeline, saving construction work.

Description

Technical Field

[0001] This invention relates to the field of trenchless drilling, specifically to a pre-trajectory type trenchless drilling component and drilling equipment. Background Technology

[0002] After a long period of use, pre-buried large-diameter cement pipes may experience structural aging or changes in external stress. In order to extend the service life of cement pipes, they need to be reinforced or repaired.

[0003] Because the pre-buried large-diameter cement pipes are buried underground and are quite heavy, excavating a deep pit to expose the pipes completely could cause destructive damage to them.

[0004] Existing technology, such as Chinese invention patent application number 202010067358.1 entitled "A Method for Supporting Shafts with Elastic Spiral Anchors," discloses the following technical solution: "A method for supporting shafts with elastic spiral anchors, comprising: supporting shafts with elastic spiral anchors; Step 1: determining the spacing between anchors and the anchoring depth of the anchors according to the cross-sectional shape of the shaft, and selecting an integral U-shaped support frame; Step 2: drilling boreholes, cleaning the boreholes, and removing the..." The elastic spiral anchor rod is inserted into the borehole, and the collar is fixed inside the borehole. The pipe body is rotated to expand the spiral radius of the elastic spiral rod except at both ends. Grouting is then performed on the pipe body, and the borehole is sealed after grouting is completed. Step three: Fix the U-shaped support frame onto the pipe body. This invention improves the utilization rate of roadway space by using elastic spiral anchor rods to support the tunnel. Furthermore, by fixing the U-shaped support frame to the surrounding rock of the roadway through the anchor rods, the integral support frame can be tightly attached to the surrounding rock, improving the overall stability of the surrounding rock of the roadway.

[0005] The above-described solution uses elastic spiral anchor bolts to support the tunnel, increasing its anchoring force. Furthermore, by fixing the ∩-shaped support frame to the surrounding rock through the anchor bolts, the integral support frame is tightly attached to the surrounding rock, improving the overall stability of the tunnel's surrounding rock. While this solution achieves external support of the tunnel without excavation, the support achieved through a single, continuous elastic spiral anchor bolt cannot provide support or reinforcement at any single point. Summary of the Invention

[0006] The purpose of this invention is:

[0007] Design a pre-trajectory trenchless drilling component and a drilling device to drill along the outer wall of the pipeline without excavating and exposing the entire pipeline, forming a complete channel on the outside of the pipeline, so as to deal with problems at any part of the outer wall of the pipeline, or fix objects at any part of the outer wall of the pipeline, saving construction work.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] A pre-defined trajectory trenchless drilling assembly includes a feed drive base, an arc-shaped drill rod, and a flexible drive shaft. The feed drive base includes a base body, a support leg mechanism, a hydraulic motor, and a guide structure. The support leg mechanism is located on the outside of the base body, the hydraulic motor is located on the base body, and the output shaft of the hydraulic motor is equipped with a drive gear. The guide structure is located inside the base body. The arc-shaped drill rod is located within the guide structure of the feed drive base. The hydraulic motor drives the arc-shaped drill rod to reciprocate relative to the feed drive base via the drive gear. The arc-shaped drill rod includes an arc-shaped sliding frame, an arc-shaped rack, and a drill bit. The drill bit is located at the end of the arc-shaped sliding frame, the arc-shaped rack is connected to the upper part of the arc-shaped sliding frame, and the arc-shaped rack meshes with the drive gear.

[0010] Furthermore, the arc-shaped sliding frame is arc-shaped, and the curvature is consistent with the curvature of the feed drive seat.

[0011] Furthermore, the arc-shaped rack is arc-shaped and is arranged along the extension direction of the arc-shaped sliding frame; the number of hydraulic motors is at least two, and the drive gear is located inside the base.

[0012] Furthermore, the arc-shaped drill rod also includes a drill bit plate, an upper connecting plate, and a lower connecting plate. The drill bit plate is located at the end of the arc-shaped sliding frame, and the drill bit is movably connected to the drill bit plate through a top sleeve. The upper connecting plate is located on the arc-shaped rack, and the lower connecting plate is located on the arc-shaped sliding frame.

[0013] Furthermore, the outrigger mechanism includes a telescopic outrigger and an outrigger cylinder. The telescopic outrigger is located inside a guide sleeve on the outside of the base body. The two ends of the outrigger cylinder are movably connected to the guide sleeve and the telescopic outrigger, respectively, for driving the telescopic outrigger to extend and retract.

[0014] Furthermore, the guiding structure includes a guide groove and a guide wheel. The guide groove is located in the lower part of the inner side of the base body. The guide groove is arc-shaped and the arc-shaped drill rod is movably disposed in the guide groove. The guide wheel is located on the inner wall of the guide groove and is in rolling connection with the arc-shaped sliding frame of the arc-shaped drill rod.

[0015] Furthermore, the feed drive seat also includes a rotary structure located at the top of the seat body; and / or, the flexible drive shaft passes through the seat body and the arc-shaped sliding frame and is connected to the drill bit.

[0016] A perforation device includes a tracked power station or a sliding pit frame, and the aforementioned preset trajectory type trenchless perforation component; the base of the preset trajectory type trenchless perforation component is movably connected to the tracked power station or the sliding pit frame.

[0017] Furthermore, the tracked power station is located at the top of the foundation pit where the pre-buried pipeline is located. The tracked power station is connected to the slewing mechanism via a robotic arm, and the tracked power station is connected to the arc-shaped drill rod via a water pipe.

[0018] Furthermore, the sliding pit frame is located at the top of the foundation pit where the pre-buried pipe is located. The sliding pit frame is connected to the feed drive seat through a lifting cylinder, and the sliding pit frame is connected to the arc-shaped drill rod through a water pipe.

[0019] The beneficial effects of this invention are as follows:

[0020] A pre-trajectory trenchless drilling assembly and a drilling device are disclosed. Without completely excavating and exposing the entire pipeline, only one-third of the pipeline is exposed. A feed drive seat is fixed via a tracked power station or a sliding pit frame. The feed drive seat drives an arc-shaped drill rod to drill along the arc-shaped wall of the outer circumference of the pre-embedded pipeline. This allows drilling to specific parts of the pipeline outer wall requiring repair or reinforcement, and can also safely and reliably form a complete channel on the outside of the pipeline to address problems at any point on the pipeline outer wall or to fix objects at any point on the pipeline outer wall. Compared to existing technologies, this significantly reduces construction work and lowers construction costs. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a perforation device according to the present invention used in foundation pit construction.

[0022] Figure 2 This is a schematic diagram of a pre-trajectory type trenchless perforation component and a pre-embedded pipe according to the present invention.

[0023] Figure 3 This is a schematic diagram of the structure of a pre-trajectory type trenchless perforation component according to the present invention.

[0024] Figure 4 This is a schematic diagram of the feed drive seat of a pre-trajectory type trenchless perforation assembly according to the present invention.

[0025] Figure 5 This is a schematic diagram of a drill rod assembly for a pre-trajectory type trenchless perforation component according to the present invention.

[0026] Figure 6 This is a schematic diagram of an arc-shaped drill rod for a pre-trajectory type trenchless perforation assembly according to the present invention.

[0027] In the diagram: 1. Feed drive seat; 11. Seat body; 12. Rotary mechanism; 13. Outrigger mechanism; 131. Telescopic outrigger; 132. Outrigger cylinder; 14. Hydraulic motor; 15. Guide groove; 16. Guide wheel; 2. Arc-shaped drill rod; 21. Arc-shaped sliding frame; 22. Arc-shaped rack; 23. Drill bit plate; 24. Top sleeve; 25. Drill bit; 26. Upper connecting plate; 27. Lower connecting plate; 3. Flexible drive shaft; 4. Water pipe; 5. Tracked power station; 6. Robotic arm; 7. Foundation pit; 8. Embedded pipeline. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0029] refer to Figures 2 to 6 A pre-trajectory trenchless drilling assembly includes a feed drive seat 1, an arc-shaped drill rod 2, and a flexible drive shaft 3; wherein the flexible drive shaft is used to drive the drilling of the end of the arc-shaped drill rod 2, and the feed drive seat 1 is used to drive the feed of the arc-shaped drill rod 2.

[0030] The feed drive base 1 includes a base body 11, a support leg mechanism 13, a hydraulic motor 14, and a guide structure. The support leg mechanism 13 is located on the outside of the base body 11 and is used to support the pre-embedded pipe 8 to achieve stable positioning of the base body 11. The hydraulic motor 14 is located on the base body 11 and the output shaft of the hydraulic motor 14 is equipped with a drive gear. The guide structure is located inside the base body 11. The hydraulic motor 14 drives the drive gear to rotate, thereby driving the arc-shaped drill rod 2.

[0031] The arc-shaped drill rod 2 is located within the guide structure of the feed drive seat 1. The guide structure is used to guide the movement of the arc-shaped drill rod 2. The hydraulic motor 14 drives the arc-shaped drill rod 2 to reciprocate relative to the feed drive seat 1 through the drive gear. The hydraulic motor 14 is connected to the hydraulic system.

[0032] The arc-shaped drill rod 2 includes an arc-shaped sliding frame 21, an arc-shaped rack 22, and a drill bit 25. The drill bit 25 is located at the end of the arc-shaped sliding frame 21 and can rotate relative to the arc-shaped sliding frame 21 to achieve rotary drilling. The arc-shaped rack 22 is connected to the upper part of the arc-shaped sliding frame 21 and meshes with a drive gear. The drive gear drives the arc-shaped sliding frame 21 through the arc-shaped rack 22.

[0033] The arc-shaped sliding frame 21 is arc-shaped, and its curvature is consistent with the curvature of the seat body 11 of the feed drive seat 1. Both are matched with the outer diameter curvature of the standard pre-embedded pipe 8, thereby realizing the arc-shaped drill rod 2 to perform arc-shaped drilling along the outer wall of the pre-embedded pipe 8.

[0034] The arc-shaped rack 22 is arc-shaped and is arranged along the extension direction of the arc-shaped sliding frame 21; to ensure that the drive gear drives the arc-shaped sliding frame 21 to match the curvature of the arc-shaped drill rod 2 itself.

[0035] The number of hydraulic motors 14 is at least two, and the drive gear (not shown in the attached figure) is located inside the base 11. At least two hydraulic motors 14 can ensure sufficient driving force and avoid the problem of drilling jamming. The meshing of the drive gear and the arc-shaped rack 22 is a gear and rack meshing type.

[0036] The arc-shaped drill rod 2 also includes a drill bit plate 23, an upper connecting plate 26 and a lower connecting plate 27. The drill bit plate 23 is located at the end of the arc-shaped sliding frame 21. The drill bit plate 23 is used to support the drill bit 25 and also serves as a support for the end of the water pipe 4. The drill bit 25 is movably connected to the drill bit plate 23 through a top sleeve 24. The top sleeve 24 is used to support the rotating bearing of the drill bit 25.

[0037] The upper connecting plate 26 is located on the arc-shaped rack 22, and the lower connecting plate 27 is located on the arc-shaped sliding frame 21. The upper connecting plate 26 and the lower connecting plate 27 are used to assemble adjacent arc-shaped drill rods 2 to form a drill rod assembly.

[0038] The outrigger mechanism 13 includes a telescopic outrigger 131 and an outrigger cylinder 132. The telescopic outrigger 131 is located inside the guide sleeve outside the base 11. The telescopic outrigger 131 can telescopically move relative to the guide sleeve. The two ends of the outrigger cylinder 132 are movably connected to the guide sleeve and the telescopic outrigger 131, respectively, and are used to drive the telescopic outrigger 131 to telescopically move. A support plate is provided at the end of the telescopic outrigger 131. The support plate is used to fit against the outer wall of the pre-embedded pipe 8.

[0039] The guiding structure includes a guide groove 15 and a guide wheel 16. The guide groove 15 is located on the lower inner side of the base 11. The guide groove 15 is arc-shaped and the arc-shaped drill rod 2 is movably disposed in the guide groove 15. The curvature of the guide groove 15 is consistent with the curvature of the arc-shaped drill rod 2.

[0040] The guide wheel 16 is located on the inner wall of the guide groove 15 and is rolledly connected to the arc-shaped sliding frame 21 of the arc-shaped drill rod 2. The guide wheel 16 is used to guide the movement of the arc-shaped drill rod 2.

[0041] The feed drive seat 1 also includes a rotary structure 12 located on top of the seat body 11, which is used to drive the rotation of the seat body 11; and / or, a flexible drive shaft 3 passes through the seat body 11 and the arc-shaped sliding frame 21 and is connected to the drill bit 25, which is flexible and is used to drive the rotation of the drill bit 25.

[0042] refer to Figure 1A perforation device includes a tracked power station 5 or a sliding pit frame, and a preset trajectory type trenchless perforation assembly as described above; the base 11 of the preset trajectory type trenchless perforation assembly is movably connected to the tracked power station 5 or the sliding pit frame, and the tracked power station 5 or the sliding pit frame is connected to the feed drive seat 1.

[0043] The tracked power station 5 is located at the top of the foundation pit 7 where the pre-buried pipeline 8 is situated. The tracked power station 5 is connected to the rotary mechanism 12 via a robotic arm 6, and is also connected to the arc-shaped drill rod 2 via a water pipe 4. The tracked power station 5 includes a mud pump, which is connected to the water pipe 4. The mud pump pressurizes the mud and transmits it through the water pipe 4 to the drill bit 25 of the arc-shaped drill rod 2, achieving lubrication and cooling during drilling. The robotic arm 6 is used to move and position the feed drive seat 1.

[0044] The sliding pit frame is located at the top of the foundation pit 7 where the pre-embedded pipe 8 is located. The sliding pit frame can move along the axial direction of the pre-embedded pipe 8. The sliding pit frame is connected to the feed drive seat 1 through a lifting cylinder. The lifting cylinder is used to drive the feed drive seat 1 to move up and down, and at the same time to position the feed drive seat 1. The sliding pit frame is connected to the arc-shaped drill rod 2 through a water pipe 4. The sliding pit frame has a mud pump, which is connected to the water pipe 4. The mud pump is used to pressurize the mud and transmit it to the drill bit 25 of the arc-shaped drill rod 2 through the water pipe 4 to achieve lubrication and cooling during drilling.

[0045] The working principle of this invention is as follows:

[0046] When reinforcement or repair is required at a specific location on the exterior of the pre-buried pipe 8 within the foundation pit 7, the foundation pit 7 should first be excavated to a depth that exposes one-third of the pre-buried pipe 8. Figure 1 As shown.

[0047] Subsequently, the tracked power station 5 or the sliding pit frame moves the feed drive seat 1 to the exposed part of the pre-embedded pipe 8, and puts the arc-shaped drill rod 2 into the guide groove 15 of the feed drive seat 1.

[0048] The tracked power station 5 or the sliding pit frame drives the flexible drive shaft 3 to rotate, which in turn drives the drill bit 25 of the arc-shaped drill rod 2 to rotate; the hydraulic motor 14 of the feed drive seat 1 operates, which drives the arc-shaped rack 22 on the arc-shaped drill rod 2 through the drive gear, thereby realizing the arc-shaped drill rod 2 to drill along the arc-shaped outer wall of the pre-embedded pipe 8.

[0049] During drilling, the guide wheel 16 guides the arc-shaped sliding frame 21 of the arc-shaped drill rod 2. At the same time, the mud pump supplies mud to the drill bit 25 of the arc-shaped drill rod 2 through the water pipe 4.

[0050] Since the length of a single arc-shaped drill rod 2 is limited, after the arc-shaped drill rod 2 has moved through drilling, another arc-shaped drill rod 2 can be assembled after the previous arc-shaped drill rod 2. The assembly is achieved through the fixed connection of the upper connecting plate 26 and the lower connecting plate 27, thereby enabling continued drilling until the specific external position of the pre-embedded pipe 8 is reached. This allows drilling to the specific external position of the pre-embedded pipe 8 without complete excavation, forming a channel on the outer wall of the pre-embedded pipe 8, so as to facilitate reinforcement or repair of the specific external position of the pre-embedded pipe 8. Compared with the existing technology, this can significantly reduce the amount of construction work and save the construction period.

[0051] In this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," "fixed," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0052] The above embodiments are used to further illustrate the present invention, but do not limit the present invention to these specific embodiments. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be understood as falling within the protection scope of the present invention.

Claims

1. A pre-trajectory type trenchless perforation assembly, characterized in that: The system includes a feed drive base (1), an arc-shaped drill rod (2), and a flexible drive shaft (3). The feed drive base (1) includes a base body (11), a support leg mechanism (13), a hydraulic motor (14), and a guide structure. The support leg mechanism (13) is located outside the base body (11), the hydraulic motor (14) is located on the base body (11), and the output shaft of the hydraulic motor (14) is equipped with a drive gear. The guide structure is located inside the base body (11). The arc-shaped drill rod (2) is located inside the base body (11). Within the guide structure of the feed drive seat (1), the hydraulic motor (14) drives the arc-shaped drill rod (2) to reciprocate relative to the feed drive seat (1) via a drive gear; the arc-shaped drill rod (2) includes an arc-shaped sliding frame (21), an arc-shaped rack (22), and a drill bit (25). The drill bit (25) is located at the end of the arc-shaped sliding frame (21), the arc-shaped rack (22) is connected to the upper part of the arc-shaped sliding frame (21), and the arc-shaped rack (22) meshes with the drive gear.

2. The pre-trajectory type trenchless perforation assembly according to claim 1, characterized in that: The arc-shaped sliding frame (21) is arc-shaped, and the curvature is consistent with the curvature of the seat (11) of the feed drive seat (1).

3. The pre-trajectory type trenchless perforation assembly according to claim 2, characterized in that: The arc-shaped rack (22) is arc-shaped and is arranged along the extension direction of the arc-shaped sliding frame (21); the number of hydraulic motors (14) is at least two, and the drive gear is located inside the seat (11).

4. A pre-trajectory type trenchless perforation assembly according to claim 3, characterized in that: The arc-shaped drill rod (2) also includes a drill bit plate (23), an upper connecting plate (26) and a lower connecting plate (27). The drill bit plate (23) is located at the end of the arc-shaped sliding frame (21), and the drill bit (25) is movably connected to the drill bit plate (23) through a top sleeve (24). The upper connecting plate (26) is located on the arc-shaped rack (22), and the lower connecting plate (27) is located on the arc-shaped sliding frame (21).

5. A pre-trajectory type trenchless perforation assembly according to claim 1, characterized in that: The outrigger mechanism (13) includes a telescopic outrigger (131) and an outrigger cylinder (132). The telescopic outrigger (131) is located inside the guide sleeve outside the seat body (11). The two ends of the outrigger cylinder (132) are movably connected to the guide sleeve and the telescopic outrigger (131) respectively, and are used to drive the telescopic outrigger (131) to telescopically move.

6. A pre-trajectory type trenchless perforation assembly according to claim 1, characterized in that: The guide structure includes a guide groove (15) and a guide wheel (16). The guide groove (15) is located on the lower inner side of the seat (11). The guide groove (15) is arc-shaped and the arc-shaped drill rod (2) is movably disposed in the guide groove (15). The guide wheel (16) is located on the inner wall of the guide groove (15) and is rolledly connected to the arc-shaped sliding frame (21) of the arc-shaped drill rod (2).

7. A pre-trajectory type trenchless perforation assembly according to claim 1, characterized in that: The feed drive seat (1) further includes a rotary structure (12) located on top of the seat body (11); and / or, the flexible drive shaft (3) passes through the seat body (11) and the arc-shaped sliding frame (21) and is connected to the drill bit (25).

8. A perforation device, characterized in that: It includes a tracked power station (5) or a sliding pit frame, and a preset trajectory type trenchless perforation assembly as described in claims 1-7; the base (11) of the preset trajectory type trenchless perforation assembly is movably connected to the tracked power station (5) or the sliding pit frame.

9. A perforation device according to claim 8, characterized in that: The tracked power station (5) is located at the top of the foundation pit (7) where the pre-buried pipe (8) is located. The tracked power station (5) is connected to the slewing mechanism (12) through the mechanical arm (6), and the tracked power station (5) is connected to the arc-shaped drill rod (2) through the water pipe (4).

10. A perforation device according to claim 8, characterized in that: The sliding pit frame is located at the top of the foundation pit (7) where the pre-embedded pipe (8) is located. The sliding pit frame is connected to the feed drive seat (1) through the lifting oil cylinder, and the sliding pit frame is connected to the arc drill rod (2) through the water pipe (4).

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