Directional drilling equipment with controllable curvature and method of using the same

Abstract

The present invention provides a directional drilling device with controllable curvature and a method for using the same, belonging to the technical field of directional drilling devices. The device includes a ground equipment body, a directional drill bit for drilling and turning, and a drill rod connected to the directional drill bit, wherein a detachable fixing rod is installed between the directional drill bit and the drill rod; the device also includes a hole reaming mechanism for adjusting the hole reaming diameter according to the diameter of the drag tube, wherein the hole reaming mechanism is connected to the drill rod, and the hole reaming mechanism includes a first fixing ring and a second fixing ring fixedly connected to both ends of the fixing rod, wherein a third fixing ring located between the first fixing ring and the second fixing ring is slidably connected to the fixing rod, wherein the third fixing ring and the second fixing ring are both hinged with a second expansion plate, and a first expansion plate is hinged between the two second expansion plates. The present invention can adjust the diameter of the hole reaming mechanism according to the required diameter by setting the hole reaming mechanism, and when reaming multiple times, it is only necessary to increase the diameter based on the current diameter of the hole reaming mechanism, without having to replace the reamer multiple times.

Description

Technical Field

[0001] The invention relates to the technical field of directional drilling equipment, and in particular to a directional drilling equipment with controllable curvature and a use method thereof. Background Art

[0002] Soil hole expanders are used in the field of trenchless soil drilling technology. Trenchless technology refers to a technology and method for detecting, inspecting, repairing and laying various underground public facilities without excavating the surface. According to different operation requirements, directional drilling equipment is divided into controllable curvature and uncontrollable curvature, and controlled curvature directional drilling equipment also includes large-scale construction and small-scale construction; controlled curvature directional drilling equipment includes drill rods and directional drill bits, as well as ground equipment that provides power, conveys water flow and splices drill rods. During drilling, the directional drill bit can be remotely controlled to turn according to a predetermined trajectory; the drill rod is hollow, and water can be conveyed through the drill rod, and finally ejected through the directional drill rod or expander. The water flow plays the role of flushing the hole and lubricating.

[0003] The expander diameter is larger than the diameter of the dragged pipe so that the pipe can enter the hole better. During small-scale construction, it is usually necessary to select a reamer according to the soil quality. If the soil quality is good, a reamer with a larger diameter can be used directly. Generally, the rear end of the reamer is connected to the pipe, and the pipe is placed in the hole while reaming. If the soil quality is poor, reaming is usually required multiple times. If the pipe diameter is relatively large, the reamer needs to be gradually replaced to reach the required diameter. This method can reduce the pressure on the borehole wall and avoid problems such as rupture or collapse of the borehole wall caused by excessive expansion at one time. In this process, repeated disassembly and replacement of the reamer is more cumbersome, and it is also troublesome to carry multiple reamers of different diameters and find the reamer of the required diameter. In addition, when encountering emergencies during reaming, such as stones around the hole wall, since the reamer diameter is fixed, it is easy for the reamer to get stuck, making it difficult to drag out the reamer, and even causing the drill rod connection to fall off. Therefore, the present application provides a directional drilling device with controllable curvature and a method for using it to meet the needs. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a directional drilling device with controllable curvature and a method of using the same to solve the problem that the existing drilling equipment needs to repeatedly disassemble and replace the reamer during multiple hole expansions, and the reamer is difficult to retract after getting stuck.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A directional drilling device with controllable curvature comprises a ground equipment body, a directional drill bit for drilling and turning, and a drill rod connected to the directional drill bit, wherein a detachable fixing rod is installed between the directional drill bit and the drill rod; and further comprises a hole expansion mechanism for adjusting the hole expansion diameter according to the diameter of the drag pipe, wherein the hole expansion mechanism is connected to the drill rod.

[0007] Optionally, the reaming mechanism includes a first fixing ring and a second fixing ring fixedly connected at both ends of the fixing rod, a third fixing ring is slidably connected to the fixing rod and is located between the first fixing ring and the second fixing ring, one end of the third fixing ring is in contact with a threaded ring that cooperates with the thread of the fixing rod, a second expansion plate is hinged on the third fixing ring and the second fixing ring, and a first expansion plate is hinged between the two second expansion plates.

[0008] Optionally, a plurality of protruding nails are fixedly connected to the surface of the first expansion plate, and a groove is formed on the surface of the second expansion plate.

[0009] Optionally, a plurality of positioning rods are fixedly connected between the first fixing ring and the second fixing ring, and the plurality of positioning rods are located around the fixing rods.

[0010] Optionally, one end of the third fixing ring is in contact with a threaded ring that is threadedly matched with the fixing rod, and a plurality of rings and a pair of mounting boxes are fixedly connected to the circumferential side of the third fixing ring. The plurality of rings and the plurality of positioning rods are slidably matched, and a lifting switch and a bolt are respectively installed in the pair of mounting boxes, and the lifting switch and the inner ends of the bolts pass through the third fixing ring, and a pair of extrusion plates are installed in the third fixing ring, and a surface of the pair of extrusion plates close to the third fixing ring is provided with a socket; a surface of the pair of extrusion plates close to each other is fixedly connected with an anti-slip pad.

[0011] Optionally, the bolt and the extrusion plate are threadedly connected, the output end of the lifting switch and the extrusion plate are fixedly connected, an auxiliary rod is fixedly connected inside the third fixing ring, and the auxiliary rod and the socket are slidingly matched; a support plate is fixedly connected between the third fixing ring and the second fixing ring, the support plate includes an elastic plate, and the middle section of the elastic plate is the contact end.

[0012] Optionally, both ends of the fixing rod are respectively fixedly connected with fixing heads, a sleeve is sleeved on the fixing head, and a connecting ring is fixedly connected to the inner end of the fixing head.

[0013] Optionally, a plurality of first water outlet holes and a plurality of second water outlet holes are provided on the surface of the positioning rod, the plurality of first water outlet holes and the plurality of second water outlet holes face different positions respectively, and one end of the positioning rod is fixedly connected to a water pipe communicating with the fixing rod.

[0014] Optionally, the second fixing ring and the first fixing ring are both fixedly connected with support plates, both sides of the support plates are fixedly connected with mounting rods, the second expansion plate is rotatably connected to the mounting rods, and both side surfaces of the second expansion plate are concave portions.

[0015] The present application also provides a method for using a food packaging box, comprising the following steps:

[0016] S1. When in use, first move the third fixing ring so that the plurality of second expansion plates are tilted outward to adjust the diameter of the hole expansion mechanism;

[0017] S2, then adjust the position of a pair of extrusion plates by adjusting the jacking switch or bolts, so that the position of the third fixing ring is locked, so that the diameter of the reaming mechanism can be maintained, and finally the position of the threaded ring is moved;

[0018] S3. When expanding the hole multiple times, first loosen the position of the jacking switch or the bolt, then adjust the hole expansion mechanism to the required position, and then tighten the position of the jacking switch or the bolt to lock the third fixing ring;

[0019] S4. In case of emergencies, the position of the extrusion plate is adjusted by controlling the remote lifting switch, and the reaming mechanism is reset under the elastic force of the elastic sheet. At this time, the drill rod and the reaming mechanism can be pulled back, and the position of the threaded ring limits the expansion range of the reaming mechanism.

[0020] Compared with the prior art, the present invention has at least the following beneficial effects:

[0021] In the above scheme, by setting up a reaming mechanism, the diameter of the reaming mechanism can be adaptively adjusted according to the required diameter. When reaming multiple times, it is only necessary to increase the diameter based on the current diameter of the reaming mechanism, without having to replace the reamer multiple times, which greatly improves the working efficiency.

[0022] By setting a support sheet, when the support sheet is squeezed, it drives the elastic sheet to support the first expansion plate, thereby further improving the stability of the reaming mechanism; by setting a contact end, the first expansion plate is kept stably supported, and at the same time the contact area with the first expansion plate can be reduced; and the elastic sheet is in a compressed state when supporting the first expansion plate. When the lifting switch moves one of the squeezing plate positions, the elastic sheet is freed from the constraint and resets, and drives the third fixing ring to reset and reduce its volume, thereby achieving the purpose of remotely controlling the resetting of the reaming mechanism, making it convenient to drag out the reaming mechanism in special circumstances.

[0023] By setting a positioning rod, the positioning rod can play a role in maintaining the position stability of the first fixing ring and the second fixing ring. At the same time, the third fixing ring slides on the positioning rod through the ring, which also plays a role in guiding the sliding of the third fixing ring and increasing the structural stability, thereby preventing the third fixing ring from rotating around the fixing rod and causing the second expansion plate on the third fixing ring to twist, thereby further improving the overall stability of the reaming mechanism.

[0024] By setting a first water outlet hole and a second water outlet hole on the positioning rod, the water sprayed in the first water outlet hole is sprayed into the hole toward the gap between the plurality of second expansion plates, which can lubricate the hole and flush the hole wall; the water sprayed from the second water outlet hole is sprayed toward the arc structure on the inner surface of the plurality of second expansion plates arranged in a ring, so that the water flow splashes to form a ring-shaped splash, which can flush and reduce the mud on the inner surface of the second expansion plate and the surface of the fixed rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable those skilled in the relevant art to make and use the invention.

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of a directional drilling device with controllable curvature;

[0027] Figure 2 for Figure 1 A schematic diagram of the second perspective structure;

[0028] Figure 3 It is a schematic diagram of the matching state of the hole expansion mechanism connected to the external transfer case;

[0029] Figure 4 It is a schematic diagram of the initial state of the hole expansion mechanism;

[0030] Figure 5 It is a schematic diagram of the cross-sectional structure of the hole expansion mechanism from the first perspective;

[0031] Figure 6 for Figure 5 The enlarged structural diagram at A in the middle;

[0032] Figure 7 for Figure 5 The enlarged structural diagram at C in the middle;

[0033] Figure 8 is a schematic diagram of the positioning rod structure;

[0034] Fig. 9 is a schematic diagram of the structure of the first fixing ring;

[0035] Fig.10 is a schematic diagram of the supporting sheet structure;

[0036] Fig.11 It is a schematic diagram of the matching state between the support plate and the second expansion plate;

[0037] Fig.12 is a schematic diagram of the structure of the second expansion plate;

[0038] Fig.13 is a schematic diagram of the structure of the third fixing ring;

[0039] Fig.14 is a schematic diagram of the structure of the second fixing ring;

[0040] Fig.15 It is a schematic diagram of the extruded plate structure;

[0041] Fig.16 It is a schematic diagram of the cross-sectional structure of the expansion mechanism from a second viewing angle;

[0042] Fig.17 for Fig.16 Enlarged structural diagram at B in the middle.

[0043] Reference numerals:

[0044] 1. Directional drill bit; 2. Drill rod; 3. Fixed rod; 4. Auxiliary rod; 5. First expansion plate; 6. Second expansion plate; 7. Support plate; 8. Groove; 9. Protruding nail; 10. Positioning rod; 11. First fixing ring; 12. Second fixing ring; 13. Third fixing ring; 14. First water outlet; 15. Second water outlet; 16. Ring; 17. Mounting box; 18. Lifting switch; 19. Bolt; 20. Extrusion plate; 21. Socket; 22. Anti-slip pad; 23. Support plate; 24. Mounting rod; 25. Elastic sheet; 26. Contact end; 27. Inner recess; 28. Fixed head; 29. ​​Connecting ring; 30. Casing; 31. Water pipe; 32. Threaded ring.

[0045] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0046] The following is a detailed description of a directional drilling device with controllable curvature and a method of using the device provided by the present invention in conjunction with the accompanying drawings and specific embodiments. It is also noted that, in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternatives to implement some known technologies; and the accompanying drawings are only for a more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0047] It should be noted that the references to "one embodiment", "embodiment", "exemplary embodiments", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0048] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0049] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” not only means “directly on” something, but also includes the meaning of being “on” something with intervening features or layers therebetween, and “on” or “over” not only means “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers therebetween.

[0050] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.

[0051] like Figures 1 to 17 As shown, an embodiment of the present invention provides a directional drilling equipment with controllable curvature, including a ground equipment body, a directional drill bit 1 for drilling and turning, and a drill rod 2 connected to the directional drill bit 1. The above-mentioned directional drill bit 1, the drill rod 2 and the ground equipment body are all prior arts and will not be described in detail herein. A detachable fixing rod 3 is installed between the directional drill bit 1 and the drill rod 2; it also includes a hole expansion mechanism for adjusting the hole expansion diameter according to the diameter of the drag pipe, and the hole expansion mechanism is connected to the drill rod 2.

[0052] like Figures 1 to 8As shown, the reaming mechanism includes a first fixing ring 11 and a second fixing ring 12 fixedly connected to both ends of the fixing rod 3, a third fixing ring 13 located between the first fixing ring 11 and the second fixing ring 12 is slidably connected to the fixing rod 3, a second expansion plate 6 is hingedly connected to the third fixing ring 13 and the second fixing ring 12, and a first expansion plate 5 is hingedly connected between the two second expansion plates 6; wherein the first expansion plates 5 and the second expansion plates 6 are multiple groups, and multiple groups of the first expansion plates 5 and the second expansion plates 6 are arranged in a ring around the fixing rod 3 to form the reaming mechanism, the third fixing ring 13 is positioned close to the first fixing ring 11 by default, At this time, the second expansion plates 6 on the first fixing ring 11 and the third fixing ring 13 are wrapped around the side surface of the fixing rod 3. When the third fixing ring 13 moves toward the second fixing ring 12, the distance between the third fixing ring 13 and the second fixing ring 12 is shortened, so that the multiple second expansion plates 6 on the third fixing ring 13 and the second fixing ring 12 are all tilted outward, so as to achieve the purpose of adjusting the diameter of the reaming mechanism. When in use, the diameter of the reaming mechanism is adjusted according to the diameter of the pipe to be dragged. When reaming multiple times, it is only necessary to increase the diameter based on the current diameter of the reaming mechanism, and there is no need to replace the reamer multiple times, which greatly improves the working efficiency.

[0053] like Figures 3 to 5 As shown, a plurality of protruding nails 9 are fixedly connected to the surface of the first expansion plate 5, and a groove 8 is provided on the surface of the second expansion plate 6. The protruding nails 9 and the groove 8 on the surfaces of the first expansion plate 5 and the second expansion plate 6 improve the friction between the reaming mechanism and the soil, and help the reamer to better grasp and squeeze the soil in soft soil layers.

[0054] like Figures 5 to 15As shown, a plurality of positioning rods 10 are fixedly connected between the first fixing ring 11 and the second fixing ring 12, and the plurality of positioning rods 10 are located around the fixing rod 3. One end of the third fixing ring 13 is in contact with a threaded ring 32 that is threadedly matched with the fixing rod 3. When the threaded ring 32 is moved, the threaded ring 32 can be pushed to rotate by the handle rods on both sides of the threaded ring 32. The height of the handles on both sides is lower than the height of the positioning rod 10. During the rotation and movement of the threaded ring 32, the third fixing ring 13 is pushed to move. A plurality of sleeve rings 16 and a pair of mounting boxes 17 are fixedly connected to the side surface of the third fixing ring 13. The plurality of sleeve rings 16 and the plurality of positioning rods 10 are slidably matched. Since the positioning rod 10 is fixed between the first fixing ring 11 and the second fixing ring 12, the positioning rod 1 0 can play a role in maintaining the position stability of the first fixing ring 11 and the second fixing ring 12. At the same time, the third fixing ring 13 slides on the positioning rod 10 through the collar 16, which also plays a role in guiding the sliding of the third fixing ring 13 and increasing the structural stability, thereby preventing the third fixing ring 13 from rotating around the fixing rod 3, which may cause the second expansion plate 6 on the third fixing ring 13 to twist. A pair of mounting boxes 17 are respectively installed with a jacking switch 18 and a bolt 19. The jacking switch 18 is a remote control switch. The remote control switch, the battery, the control panel and other structures are all installed in one of the mounting boxes 17. It should be noted that the above structures are all prior arts and will not be described in detail here. The output end of the jacking switch 18 and the inner end of the bolt 19 The third fixing ring 13 has a pair of extrusion plates 20 installed in it, and a surface of the pair of extrusion plates 20 close to the third fixing ring 13 is provided with a plurality of insertion holes 21; the bolt 19 is threadedly connected to the extrusion plate 20, the output end of the lifting switch 18 is fixedly connected to the extrusion plate 20, the third fixing ring 13 is fixedly connected with an auxiliary rod 4, the auxiliary rod 4 and the insertion hole 21 are slidably matched, the pair of extrusion plates 20 are located on opposite sides of the third fixing ring 13, the insertion hole 21 on one of the extrusion plates 20 is threadedly connected to the bolt 19, and the auxiliary rod 4 and the insertion hole 21 are slidably connected, so when the bolt 19 rotates, the extrusion plate 20 can be driven to move in the third fixing ring 13, and the other extrusion plate 20 is fixedly connected to the lifting switch 18, through The extrusion plate 20 can be driven to move by ejecting and resetting the lifting switch 18. Since a pair of extrusion plates 20 are located on opposite sides of the side surface of the fixing rod 3, the third fixing ring 13 needs to be moved when adjusting the diameter of the hole expansion mechanism. After being pushed to the desired position, the lifting switch 18 can be started or the bolt 19 can be manually adjusted to move the extrusion plate 20, so that the extrusion plate 20 fits and squeezes the fixing rod 3, thereby preventing the third fixing ring 13 from moving. A surface of the pair of extrusion plates 20 that is close to each other is fixedly connected with an anti-skid pad 22, wherein the surface of the anti-skid pad 22 has a plurality of protrusions, the purpose of which is to increase the friction with the fixing rod 3 and further improve the locking ability; after the third fixing ring 13 is fixed, the position of the threaded ring 32 can be moved in the reverse direction as required;During the hole expansion process, if the hole expansion mechanism cannot be dragged out due to special circumstances, the position of one of the extrusion plates 20 can be moved by the remotely controlled lifting switch 18, and the third fixing ring 13 can be reset after being released from the constraint. The reset hole expansion mechanism is easy to be dragged out of the hole, and the position of the threaded ring 32 can limit the reset position of the third fixing ring 13, thereby limiting the expansion range of the hole expansion mechanism after reset, which is convenient for adjustment according to own needs and improves adaptability. ;

[0055] like Figures 8 to 11 As shown, a plurality of annularly arranged support sheets 7 are fixedly connected between the third fixing ring 13 and the second fixing ring 12, and the plurality of support sheets 7 include an elastic sheet 25, and the middle section of the elastic sheet 25 is a contact end 26, wherein the support sheet 7 and the elastic sheet 25 are an integral structure, and when the third fixing ring 13 slides inwardly, the support sheet 7 on the third fixing ring 13 squeezes the elastic sheet 25, so that the elastic sheet 25 tilts upward and presses against the first expansion plate 5, and at this time, the elastic sheet 25 plays a role in supporting the first expansion plate 5, thereby improving the overall stability of the expansion mechanism; and the elastic sheet 25 is in a compressed state at this time, and when the remote control When the lifting switch 18 moves the position of one of the extrusion plates 20, the elastic sheet 25 is reset and drives the third fixing ring 13 to reset, thereby achieving the purpose of remote control of the hole expansion mechanism reset; in addition, since the middle section of the elastic sheet 25 is the contact end 26, wherein the contact end 26 is a wavy sheet structure, when the elastic sheet 25 is tilted to support the first expansion plate 5, the multiple protrusions on the wavy sheet structure contact the first expansion plate 5. The advantage of such a setting is that it can maintain stable support for the first expansion plate 5, and at the same time reduce the contact area with the first expansion plate 5, and reduce the accumulation of soil between the first expansion plate 5 and the contact end 26.

[0056] like Figures 3 to 8 As shown, the two ends of the fixing rod 3 are respectively fixedly connected with a fixing head 28, a sleeve 30 is sleeved on the fixing head 28, and a connecting ring 29 is fixedly connected to the inner end of the fixing head 28. One end of the drill rod 2 is the fixing head 28, and the other end is a slot that matches the thread of the fixing head 28. Multiple drill rods 2 can be assembled and lengthened; one end of the directional drill bit 1 is also provided with a slot that matches the thread of the fixing head 28. During installation, the fixing head 28 at one end of the fixing rod 3 is inserted into the slot on the drill rod 2, and the fixing head 28 at the other end of the fixing rod 3 is inserted into the slot on the directional drill bit 1, and the sleeve 30 is moved to the connection between the fixing head 28 and the slot, and finally an external bolt or other rod-shaped object is inserted for reinforcement. This structure is a prior art and will not be described in detail; by arranging the connecting ring 29 on the fixing head 28, when the reaming mechanism reams the hole in the drill hole, the slope of the connecting ring 29 is connected with the slope of the second expansion plate 6, which is conducive to the reaming mechanism to pre-reaming.

[0057] like Figures 5 to 17As shown, a plurality of first water outlet holes 14 and a plurality of second water outlet holes 15 are provided on the surface of the positioning rod 10, and the plurality of first water outlet holes 14 and the plurality of second water outlet holes 15 are respectively oriented to different positions. A water pipe 31 connected to the fixing rod 3 is fixedly connected to one end of the positioning rod 10. When spraying water, the water in the drill rod 2 enters the fixing rod 3, and enters the positioning rod 10 through the water pipe 31, and finally sprays out through the first water outlet holes 14 and the second water outlet holes 15 on the surface of the positioning rod 10. The water sprayed in the first water outlet hole 14 flows toward the gap between the plurality of second expansion plates 6, and thus sprays into the hole, and the water sprayed in the second water outlet hole 15 flows toward the inner surfaces of the plurality of second expansion plates 6.

[0058] like Figures 12 to 17 As shown, the second fixing ring 12 and the first fixing ring 11 are both fixedly connected with a support plate 23, and both sides of the support plate 23 are fixedly connected with a mounting rod 24, the second expansion plate 6 and the mounting rod 24 are rotatably connected, and both sides of the second expansion plate 6 are inner recesses 27, and the inner recesses 27 are arc-shaped structures. By arranging the inner recesses 27 of the arc-shaped structure on the side of the second expansion plate 6, when several second expansion plates 6 are closed, there will be gaps between them, preventing the accumulation of mud on the side of the second expansion plate 6 and causing the problem of ineffective closure; in addition, since several second expansion plates 6 are arranged in a ring and several second expansion plates 6 are of an arc-shaped structure, the water sprayed from the second water outlet 15 is directed toward the second expansion plate 6, and the water flow splashes to both sides through the arc-shaped structure. Several second water outlets 15 work simultaneously to form annular splashing water, which can, on the one hand, flush the inner surface of the second expansion plate 6 to reduce mud accumulation, and on the other hand, reduce mud accumulation on the surface of the fixing rod 3.

[0059] The present application also provides a method for using a food packaging box, comprising the following steps:

[0060] S1. When in use, first move the third fixing ring 13 so that the plurality of second expansion plates 6 are tilted outward to adjust the diameter of the hole expansion mechanism;

[0061] S2, then adjust the position of a pair of extrusion plates 20 by adjusting the jacking switch 18 or the bolt 19, so that the position of the third fixing ring 13 is locked, so that the diameter of the reaming mechanism can be maintained, and finally move the position of the threaded ring 32;

[0062] S3. When expanding the hole multiple times, first loosen the position of the jacking switch 18 or the bolt 19, then adjust the hole expansion mechanism to the desired position, and then tighten the position of the jacking switch 18 or the bolt 19 to lock the third fixing ring 13;

[0063] S4. In case of an emergency, the position of the extrusion plate 20 is adjusted by controlling the remote lifting switch 18, and the reaming mechanism is reset under the elastic force of the elastic sheet 25. At this time, the drill rod and the reaming mechanism can be pulled back, and the position of the threaded ring 32 limits the expansion range of the reaming mechanism.

[0064] The working principle of the technical solution provided by the present invention is as follows:

[0065] The directional drill bit 1 is drilled into the soil through the entry point and drilled out of the ground through the exit point. The diameter of the reaming mechanism is adjusted by adjusting the position of the third fixing ring 13, and the position is locked by adjusting the jacking switch 18 or the bolt 19. There is no need to repeatedly replace the reamer when reaming multiple times. When reaming multiple times, the reaming mechanism can be deployed after the directional drill bit 1 drills out of the ground from the exit point, and then dragged back. When the reaming mechanism is dragged back to the entry point, the reaming mechanism can be retracted, so that the drill rod 2 and the reaming mechanism move along the drill hole to the exit point, and then the reaming mechanism is deployed again, and this is repeated. Another way is to set the ground equipment body at both the entry point and the exit point. When reaming, the drill rod is also connected to the other end of the reaming mechanism. The reaming mechanism is pulled back and forth by the two equipment bodies to improve the reaming efficiency. After the reaming is completed, remove the directional drill bit 1, connect the external splitter to the reaming mechanism, connect the end of the splitter away from the reaming mechanism to the dragged pipeline, and then start to drag the pipeline back.

[0066] When adjusting the position of the third fixing ring 13, the elastic sheet 25 is squeezed to support the first expansion plate 5; since the elastic sheet 25 is in a compressed state at this time, when the lifting switch 18 moves the position of one of the squeezing plates 20, the elastic sheet 25 is reset and drives the third fixing ring 13 to reset, thereby achieving the purpose of remotely controlling the resetting of the hole expansion mechanism, which is convenient for retracting the hole expansion mechanism in case of unexpected situations during hole expansion.

[0067] When spraying water, the water in the drill rod 2 enters the fixed rod 3, and enters the positioning rod 10 through the water pipe 31, and finally sprays out through the first water outlet hole 14 and the second water outlet hole 15 on the surface of the positioning rod 10. The water sprayed in the first water outlet hole 14 is sprayed into the hole toward the gap between the plurality of second expansion plates 6; the water sprayed in the second water outlet hole 15 is sprayed toward the inner surfaces of the plurality of second expansion plates 6, and the water splashes to both sides through the arc structure. The plurality of second water outlet holes 15 work simultaneously to form annular splashing water, which can, on the one hand, flush the inner surface of the second expansion plate 6 to reduce soil accumulation, and on the other hand, reduce soil accumulation on the surface of the fixed rod 3.

[0068] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0069] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A directional drilling device with controllable curvature, characterized in that: It comprises a ground equipment body, a directional drill bit for drilling and turning, and a drill rod connected to the directional drill bit, wherein a detachable fixing rod is installed between the directional drill bit and the drill rod; It also includes a hole expansion mechanism for adjusting the hole expansion diameter according to the drag pipe diameter, and the hole expansion mechanism is connected to the drill pipe; The hole expansion mechanism comprises a first fixing ring and a second fixing ring fixedly connected to both ends of the fixing rod, a third fixing ring located between the first fixing ring and the second fixing ring is slidably connected to the fixing rod, a second expansion plate is hingedly connected to the third fixing ring and the second fixing ring, and a first expansion plate is hingedly connected between the two second expansion plates; A plurality of protruding nails are fixedly connected to the surface of the first expansion plate, and a groove is formed on the surface of the second expansion plate; A plurality of positioning rods are fixedly connected between the first fixing ring and the second fixing ring, and the plurality of positioning rods are located around the fixing rods; One end of the third fixing ring is in contact with a threaded ring that is threadedly matched with the fixing rod, a plurality of collars and a pair of mounting boxes are fixedly connected to the circumferential side of the third fixing ring, a plurality of collars and a plurality of the positioning rods are slidably matched, a lifting switch and a bolt are respectively installed in the pair of mounting boxes, the lifting switch and the inner ends of the bolts both pass through the third fixing ring, a pair of extrusion plates are installed in the third fixing ring, and a surface of the pair of extrusion plates close to the third fixing ring is provided with a plug hole; A pair of surfaces of the extrusion plates close to each other are fixedly connected with anti-skid pads; The bolt is threadedly connected to the extrusion plate, the output end of the lifting switch is fixedly connected to the extrusion plate, an auxiliary rod is fixedly connected inside the third fixing ring, and the auxiliary rod is slidably matched with the jack; A support sheet is fixedly connected between the third fixing ring and the second fixing ring, the support sheet comprises an elastic sheet, and a middle section of the elastic sheet is a contact end; The two ends of the fixing rod are respectively fixedly connected with fixing heads, the fixing heads are sleeved with sleeves, and the inner ends of the fixing heads are fixedly connected with connecting rings; The surface of the positioning rod is provided with a plurality of first water outlet holes and a second water outlet hole, the plurality of the first water outlet holes and the plurality of the second water outlet holes are respectively oriented to different positions, and one end of the positioning rod is fixedly connected to a water pipe communicating with the fixing rod; The second fixing ring and the first fixing ring are both fixedly connected with support plates, both sides of the support plates are fixedly connected with mounting rods, the second expansion plate is rotatably connected to the mounting rods, and both side surfaces of the second expansion plate are inner concave portions.

2. The method for using the curvature-controllable directional drilling equipment according to claim 1, characterized in that: The following steps are involved: S1. When in use, first move the third fixing ring so that the plurality of second expansion plates are tilted outward to adjust the diameter of the hole expansion mechanism; S2, then adjust the position of a pair of extrusion plates by adjusting the jacking switch or bolts, so that the position of the third fixing ring is locked, the diameter of the reaming mechanism is maintained, and finally the position of the threaded ring is moved; S3. When expanding the hole multiple times, first loosen the position of the jacking switch or the bolt, then adjust the hole expansion mechanism to the required position, and then tighten the position of the jacking switch or the bolt to lock the third fixing ring; S4. In case of emergencies, the position of the extrusion plate is adjusted by controlling the remote lifting switch, and the reaming mechanism is reset under the elastic force of the elastic sheet. At this time, the drill rod and the reaming mechanism can be pulled back, and the position of the threaded ring limits the expansion range of the reaming mechanism.

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