Drilling system and using method

Abstract

The invention discloses a drilling system and a using method, belongs to the field of civil engineering, and particularly relates to the field of wall surface grooving of the civil engineering. Comprising a feeding device, a drilling device, a lead screw and a power source. The feeding device is driven by a power source, the first end of the lead screw is fixedly connected with the feeding device, and the lead screw is driven by the feeding device to rotate around the axis. The second end of the lead screw is connected with a transmission threaded hole in the drilling device in a matched mode. The rotation of the screw rod drives the drilling device to generate cutting motion; the axial tension of the screw rod drives the drilling device to generate feeding motion close to the feeding device; the drilling device comprises a gear box body, a guide frame, an input shaft, a planetary gear set and a drill bit; the guide frame plays a role in guiding and stabilizing the drilling device. The wall groove capable of containing the threading pipe is constructed in the side wall of the foundation wall groove, the opening is narrower than that in the prior art, and the problems of surface defects of the facing layer, bulging and loosening of filler and collapse of the threading pipe are solved.

Description

Technical Field

[0001] The invention belongs to the field of civil engineering, and particularly relates to the field of wall surface grooving in civil engineering. Background Art

[0002] In civil engineering projects, it is often necessary to bury pipelines on the wall surface, such as Figure 1 As shown, there are two junction boxes on the wall, requiring conduit to be buried between them. The wiring harness passes through the conduit to connect to the junction boxes. Conventional construction methods involve creating a wall groove between the junction boxes, both wider and deeper than the conduit diameter. The conduit is placed in the groove, and finally, plaster mortar is applied to the groove space between the conduit surface and the wall. After the mortar solidifies, a decorative layer is applied to the wall to beautify it, forming a wall finish.

[0003] The above process used in the prior art has the following three defects.

[0004] First, a large amount of mortar needs to be filled in the wall groove. The volume difference between the mortar in the groove and the mortar on the wall is large, which forms a large shrinkage stress at the edge of the groove, causing cracks in the wall finishing layer on the wall surface, affecting the appearance; Secondly, the fixation of the wire conduit in the cable trough depends on the bonding strength between the mortar and the side of the wall trough. If the surface of the cable trough is not cleaned properly before filling with mortar, the bonding strength will be greatly affected. Over time, the filler in the wall trough and the wire conduit will produce strain under the influence of temperature and humidity, causing the filler to loosen, the wire conduit to be unstable, and even cause bulges on the wall surface. Third, if the wall where the wire conduit is located is under normal pressure, such as burying the wire conduit in a groove in the ground (wall in a broad sense), filling the space between the wire conduit and the wall with mortar and solidifying it, the movement of people or the rolling of wheels will exert an alternating force on the mortar in the filling area. This force will be applied to the surface of the wire conduit, squeezing it. In extreme cases, such as when the filling mortar is not well bonded to the side of the groove, the groove is too wide, or the pressure is too high, the wire conduit will collapse and squeeze the internal wiring harness, causing electrical faults such as short circuits and open circuits.

[0005] The above is an explanation of the wire harness conduit in the prior art. In fact, a similar scenario is laying water pipes in the wall. Elbows or tees and other joints need to be installed at both ends of the water pipes. The space where these joints are placed is the junction box.

[0006] In summary, the wall groove in the prior art is wider than the wire conduit, which causes problems such as surface defects of the finishing layer, bulging of the filler, and collapse of the wire conduit. Summary of the Invention

[0007] The present invention aims to solve the problem in the prior art that the wall groove is wider than the threading pipe, which causes surface defects of the finishing layer, bulging and loosening of the filling material and collapse of the threading pipe.

[0008] In order to achieve the above purpose, the scheme is as follows: A drilling system is designed, including a tool feeding device, a drilling device, a screw and a power source; the tool feeding device is driven by the power source, the first end of the screw is fixedly connected to the tool feeding device, and the screw is driven by the tool feeding device to rotate around the axis; the second end of the screw is cooperated with the transmission threaded hole in the drilling device; the rotation of the screw drives the drilling device to generate a cutting motion; the axial tension of the screw drives the drilling device to generate a feed motion close to the tool feeding device; the drilling device includes a gear box, a guide frame, an input shaft, a planetary gear set and a drill bit; the gear box is fixedly connected to the guide frame; the input shaft is rotationally connected to the second end of the gear box, and the input shaft is provided with a transmission threaded hole along its own axis, namely the transmission threaded hole; the drill bit is rotationally connected to the first end of the gear box; the planetary gear set is inside the gear box, and the rotation of the input shaft reduces speed to drive the drill bit to rotate; the guide frame plays a guiding and stabilizing role for the drilling device.

[0009] Furthermore, a method for using the drilling system is characterized by comprising the following steps: 1) Construct the first foundation groove, the second foundation groove and the foundation wall groove connecting them on the wall surface; the width of the foundation wall groove is smaller than the diameter of the wire threading pipe; 2) Connect the tool feeding device and drilling device to the screw respectively; 3) Place the tool feeding device in the first foundation groove, the drilling device in the second foundation groove, and the screw in the foundation wall groove; 4) Adjust the depth of the tool feed device in the wall so that the feed direction of the drilling device is parallel to the foundation wall groove; 5) Connect the power source of the cutting device, drive the drilling device through the foundation wall groove, and drill its side to form a space for accommodating the wire tube.

[0010] The present invention constructs a wall groove capable of accommodating a wire conduit in the side wall of the foundation wall groove, and the opening is narrower than that of the prior art, thereby avoiding the problems of surface defects of the finishing layer, bulging and loosening of the filler, and collapse of the wire conduit. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings, which constitute a part of the present application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings: Figure 1 The existing technology of slotting; Figure 2 Schematic diagram of the foundation wall groove of the present invention; Figure 3 Schematic diagram of the drilling system used in this application; Figure 4 right Figure 3 Cut open the wall to hide the power source; Figure 5 and Figure 6 Schematic diagram of the forces acting on the drilling device; Figure 7 and Figure 8 The drilling process of the drilling system and the over-travel state after drilling is completed, and the wall is cut open; Figure 9 and Figure 10 Drilling is completed to form the foundation wall groove and insert the wire conduit; Figures 11 to 14 3D and exploded views of the drilling device; Figures 15 and 16 Three-dimensional diagram of the tool feeding device; Figure 17 Three-dimensional diagram of the tie rod shaft; Figure 18 Schematic diagram of the screw end structure; Figures 19 to 21 Schematic diagram of the connection between the screw rod and the pull rod; Figure 22 and Figure 23 Connector diagram; Figures 24 to 27 Schematic diagram of the connector and lead screw assembly; Figure 28 and Figure 29 Schematic diagram of the drilling device; The following are marked in the figure: 1. Tool feed mechanism; 11. Tool carriage; 111. Support surface; 112. Depth adjuster; 12. Tie rod shaft; 121. Docking threaded hole; 122. Side opening; 123. Shoulder groove; 13. Drive shaft; 2. Drilling device; 21. Gearbox; 22. Guide frame; 221. Stopper; 222. Screw hole; 223. Balancing blade; 23. Input shaft; 231. Drive threaded hole; 232. Chip groove; 233. Sun gear; 24. Thrust bearing; 25. Restraint cover; 26. Planetary gear set; 261. Planetary gear; 262. Planet carrier; 263. Output carrier; 27. Drill bit; 271. Cutting edge; 272. Chip groove; 3. Screw; 31. Anti-rotation surface; 321. First shoulder; 322. Second shoulder 4. Power source; 5. Connector; 51. Connecting sleeve; 511. Conformal hole; 512. Semi-threaded hole; 513. Anti-rotation screw hole; 52. Set screw; DETAILED DESCRIPTION

[0012] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0013] For ease of expression and understanding, Figure 3 The present invention is shown as being placed within a wall. Here, "upper" or "top" refers to the wall surface, while "interior" or "bottom" refers to the interior of the wall. The depth direction is from the interior of the wall to the wall surface, or vice versa. The width of the foundation wall groove is the lateral direction. This article uses the system operating within a horizontal wall (e.g., the floor) as an example. When the system is used on a vertical wall, ceiling, or other angled wall, the relative relationships between them remain unchanged.

[0014] like Figure 1 As shown in the figure, the existing technology of buried conduit operation method and existing problems are described, namely, there are problems such as surface defects of the finishing layer, bulging and loosening of the filler, and collapse of the conduit. Similar scenarios include laying water pipes in the wall, and elbows or tees need to be installed at both ends of the water pipes. In order to be compatible with these scenarios, Figure 2 As shown, this article uses the first foundation groove and the second foundation groove as the conceptual expression of the junction box, which is the space opened in the wall to accommodate components such as the junction box and pipe joints, usually a rectangular parallelepiped.

[0015] like Figure 2 As shown, using existing technology, a first foundation groove and a second foundation groove are constructed in the same wall (a wall herein generally refers to a building surface such as a ceiling, wall, or floor). The two grooves are arranged opposite each other, that is, their adjacent surfaces are parallel. Using existing grooving tools, a foundation wall groove is constructed to connect the adjacent surfaces of the two grooves. The foundation wall groove has a rectangular cross-section and is open at the top. The bottom surface is higher than the bottom surfaces of the first and second foundation grooves. The width of the foundation wall groove is less than the outer diameter of the conduit (a conduit herein generally refers to the tubular object connecting the first and second foundation grooves).

[0016] In the first embodiment, the drilling system disclosed in the present invention is as follows: Figure 2 、 Figure 3 and Figure 4 As shown, the present invention comprises a tool feeding device 1, a drilling device 2, a screw rod 3, and a power source 4. The tool feeding device 1 is driven by the power source 4. The first end of the screw rod 3 is fixedly connected to the tool feeding device 1 and is driven by the tool feeding device 1 to rotate about its axis. The second end of the screw rod 3 is engaged with a transmission threaded hole in the drilling device 2. The rotation of the screw rod 3 drives the drilling device 2 to produce a cutting motion. The axial tension of the screw rod 3 drives the drilling device 2 to produce a feed motion close to the tool feeding device 1.

[0017] The power source 4 can be integrated with the tool feeding device 1, or a power source of existing technology, such as an electric drill, an electric screwdriver, etc., which converts electrical energy into rotational mechanical energy, can be used to reduce manufacturing costs by using existing equipment.

[0018] Specifically, such as Figure 4 、 Figure 15 and Figure 16 As shown, the tool feed mechanism 1 includes a tool holder 11, a pull rod shaft 12, and a drive shaft 13. The tool holder 11 is a stretched body with a concave cross-section in the vertical direction, with its opening facing the drilling mechanism 2. In the center is a rectangular base plate, with the opposing sides of the base plate being a first plate and a second plate, respectively. The surfaces of the first plate and the second plate located in the direction of the opening of the tool holder 11 are support surfaces 111. The base plate is provided with a first through hole, the axial direction of the first through hole being parallel to the longitudinal direction of the foundation wall groove. A boss is provided in the vertical direction on the surface of the base plate away from the support surface 111, and a second through hole extends vertically through the upper and lower end surfaces of the boss.

[0019] The support surface 111 contacts the side of the first basic groove close to the second basic groove, generating normal support force and spanwise friction force, which respectively bear the cutting force when the pulling drilling device 2 moves and the rotational counter-torque. In order to reliably generate friction force, the support surface 111 can be made into a feature that reduces the contact area; the screw rod 3 passes through the area enclosed by the support surface 111, and the support is stable and does not overturn.

[0020] The first end of the pull rod shaft 12 is a bevel gear, and the second end of the pull rod shaft 12 is a cylinder that is coaxial with the bevel gear at the first end. The outer circumference of the cylinder is rotatably connected to the first through hole of the base plate, and a docking threaded hole 121 is provided inwardly on the end surface of the cylindrical surface. This docking threaded hole 121 is threadedly connected to the first end of the screw rod 3; the above-mentioned rotational connection can be that the first through hole is fixedly connected to the outer ring of the rolling bearing, and the pull rod shaft 12 is fixedly connected to the inner ring of the rolling bearing; a sliding bearing can also be embedded in the first through hole of the base plate, and the outer circumference of the cylinder is rotatably matched with the inner hole of the sliding bearing.

[0021] The first end of the drive shaft 13 is rotatably connected to the second through hole and is exposed on the wall. The second end of the drive shaft 13 is a bevel gear that meshes with the bevel gear on the first end of the pull rod shaft 12. The rotational connection between the first end of the drive shaft 13 and the second through hole can be achieved by installing rolling bearings at both ends of the second through hole, and the drive shaft 13 passes through the rolling bearings to achieve rotational connection.

[0022] like Figure 3 、 Figure 7 and Figure 8As shown, the transmission ratio of the pull rod shaft 12 and the drive shaft 13 is not less than 1; the purpose is to provide sufficient cutting pulling force through the speed reduction torque of the power source 4, and on the other hand, it also reduces the torque requirement of the power source 4 and increases the selection range of the power source 4.

[0023] The tool holder 11 faces the opening of the drilling device 2, and there is enough space to accommodate the drilling overtravel of the drilling device 2; the drilling is completed only when the cutting edge of the drill bit of the drilling device 2 is completely pulled out from the side of the foundation wall groove. This requires the tool holder 1 to provide sufficient travel to the drilling device 2. Since the space of the first foundation groove is limited, the tool holder 11 is set to face the space of the drilling device 2 to accommodate the overtravel of the drilling device 2.

[0024] At least three threaded holes are evenly distributed on the top of the first and second plates. The axis of the holes is in the up and down direction. A screw is matched with the holes. A butterfly-shaped hand-tightening piece is provided on the upper part of the screw. The purpose of the hand-tightening piece is to facilitate tool-free operation. Fastener joints, such as internal and external hexagonal sockets, can also be used and operated with general tools.

[0025] The power source 4 is an electric drill or an electric screwdriver, and the chuck thereof clamps the first end of the input shaft 17 .

[0026] According to the method of using the drilling system in the above embodiment, Figure 3 、 Figure 9 and Figure 10 As shown, the following steps need to be included: 1) Construct the first foundation groove, the second foundation groove and the foundation wall groove connecting them on the wall surface; the width of the foundation wall groove is smaller than the diameter of the wire threading pipe; 2) Connect the tool feeding device 1 and the drilling device 2 to the screw rod 3 respectively; 3) Place the tool feeding device 1 in the first foundation groove, the drilling device 2 in the second foundation groove, and the screw rod 3 in the foundation wall groove; 4) Adjust the depth of the cutting device 1 in the wall so that the feeding direction of the drilling device 2 is parallel to the foundation wall groove; 5) Connect the cutting device 1 to the power source 4, drive the drilling device 2 to pass through the foundation wall groove, and drill its side to form a space for accommodating the threading pipe.

[0027] The wire threading pipe has a certain degree of deflection and a certain amount of deformation. The inner diameter of the processed wall groove is larger than the outer diameter of the wire threading pipe. The wire threading pipe passes through the processed wall groove from the first basic groove or the second basic groove.

[0028] In the case of machining wall grooves, the distance between the first foundation wall groove and the second foundation wall groove is random, while the length of the screw rods 3 prepared by the drilling system is limited. A possible solution is to use standard screw rods for screw rods 3. Screw rods are easily available and inexpensive in the civil engineering field. They are commonly used in scenarios such as connecting exterior ceiling panels and fixing formwork. The length of the screw rods is long enough, usually exceeding 4 meters, to cover practical scenarios. Screw rods of the corresponding length can be cut and used. Alternatively, screw rods 3 of different lengths can be prepared in advance and their connection shapes and operation methods can be designed accordingly. This reduces the variety of screw rod 3 lengths while allowing for different length combinations, improving the scenario coverage of the drilling system. Specifically.

[0029] Example 2, as Figures 17 to 23 As shown, the screw assembly includes a connector 5 that connects two screws 3, enabling them to transmit tension and torque. N screws 3 are connected by N-1 connectors 5 to form a screw assembly. The first end of the screw assembly is fixedly connected to the tool feed mechanism 1, and the second end is matingly connected to the transmission threaded hole in the drilling mechanism 2. The total length of the screw assembly allows the tool feed mechanism 1 and the drilling mechanism 2 to be placed in the first foundation wall groove and the second foundation wall groove, respectively.

[0030] The screw rod 3 and connector 5 closest to the tool feeding device 1 are the first screw rod and the first connector respectively; the screw rod 3 and connector 5 closest to the drilling device 2 are the Nth screw rod and the N-1th connector respectively.

[0031] like Figure 18 As shown, the screw assembly has two fixed connection positions at its first end, namely the first fixed connection position and the second fixed connection position. Either of the two fixed connection positions can be fixedly connected to the tool feeding device 1; when switching from the second fixed connection position to the first fixed connection position, the screw assembly moves a distance A in the direction of the drilling device 2; the distance A is large enough to meet the requirement that after the Nth screw and the N-1th connector are removed, the second end of the screw assembly can be matched with the transmission threaded hole in the drilling device 2 for connection.

[0032] like Figure 18 and Figure 19As shown, the first end of the screw rod 3 is provided with two planes symmetrical about the axis, which are the anti-rotation surfaces 31. A rectangular notch, namely the first shoulder 321, is provided symmetrically about the axis near the first end of the screw rod 3 on the side of the anti-rotation surface 31, i.e., the first fixed position. A second shoulder 322, i.e., the second fixed position, is provided by moving a distance A away from the first end of the screw rod 3 along the axial direction. The distance between the two anti-rotation surfaces 31 is B. The radial distance along the screw rod 3 of the bottom surfaces of the two corresponding first shoulders 321 is C; the radial distance along the screw rod 3 of the bottom surfaces of the two corresponding second shoulders 322 is C. The opening width of the first shoulder 321 is D; the opening width of the second shoulder 322 is D. The second end of the screw rod 3 is also provided with an anti-rotation surface 31, a first shoulder 321, and a second shoulder 322, which are symmetrical with the corresponding features of the first end about the center point of the length direction of the screw rod 3.

[0033] like Figure 22 and Figure 23 As shown, connector 5 is cylindrical with an outer diameter smaller than the width of the foundation wall groove, facilitating rotation within the foundation wall groove when assembled into a screw assembly. Threaded holes are provided along the axis of connector 5, penetrating both end faces. These threaded holes mate with screw rod 3, with the axis of the threaded holes coinciding with the axis of connector 5.

[0034] Along the axis of the connector 5, a special-shaped hole with a diameter equal to the major diameter of the screw rod 3 and a width of B is provided, penetrating the end faces at both ends. The centerline of the special-shaped hole coincides with the axis of the connector 5. The above-mentioned threaded hole and special-shaped hole are combined to form a semi-threaded hole 512 with a threaded portion and a non-threaded shaped hole 511. At least one anti-rotation screw hole 513 is provided on the side wall of the semi-threaded hole 512 near the end face of the connector 5. This design allows the screw rod 3 to be inserted into the connector 5 and rotated 90°, so that the thread at the end of the screw rod 3 and the semi-threaded hole 512 of the connector 5 engage with each other. Subsequently, the anti-rotation screw hole 513 presses against the anti-rotation surface 31, thereby firmly connecting the connector 5 and the screw rod 3 and reliably transmitting torque and tension.

[0035] like Figure 15 、 Figure 16 and Figure 17 As shown, based on Figure 15 and Figure 16The scheme shown is a scheme of the tool feeding device 1 that integrates the above-mentioned screw assembly scheme as follows. The tool feeding device 1 includes a tool holder 11, a pull rod shaft 12 and a drive shaft 13. The tool holder 11 is a stretching body with a concave cross-section in the up and down directions, with an opening facing the drilling device 2, and a rectangular base plate in the middle. The opposite sides of the base plate are the first plate and the second plate, respectively. The surfaces of the first plate and the second plate located in the opening direction of the tool holder 11 are support surfaces 111; a first through hole is provided on the base plate, and the axial direction of the first through hole is parallel to the length direction of the foundation wall groove; a boss is provided on the surface of the base plate away from the support surface 111 in the up and down directions, and the second through hole passes through the upper and lower end surfaces of the boss in the up and down directions; the first end of the pull rod shaft 12 is a bevel gear, and the second end of the pull rod shaft 12 is a cylindrical The body is coaxial with the bevel gear at the first end; a radial recess is provided at the second end of the pull rod shaft 12 for accommodating the screw rod 3 when fixedly connected to the second shaft shoulder 322 of the screw rod 3; the distance between the end face of the second end of the pull rod shaft 12 and the wall of the radial recess is less than D; a U-shaped groove, i.e., a side opening 122, is radially provided on the end face of the second end of the pull rod shaft 12, and the opening width is greater than C; the side opening 122 is opposite to the end face of the second end of the pull rod shaft 12, and two shoulder grooves 123 are symmetrically provided around the center of rotation, and the length between the two shoulder grooves 123 is greater than the major diameter of the screw rod 3, the width of the shoulder groove 123 is B, and the depth is less than D.

[0036] The first end of the drive shaft 13 is rotatably connected to the second through hole and exposed to the wall, and the second end of the drive shaft 13 is a bevel gear that meshes with the bevel gear of the first end of the pull rod shaft 12; the transmission ratio of the pull rod shaft 12 and the drive shaft 13 is not less than 1; the tool holder 11 faces the opening of the drilling device 2, and there is enough space to accommodate the drilling overtravel of the drilling device 2; at least 3 threaded holes are evenly distributed on the top of the first plate and the second plate, and the axis of the hole is in the up and down direction, and is matched with a screw, and a butterfly-shaped hand-tightening piece is provided on the upper part of the screw; the power source 4 is an electric drill or an electric screwdriver, and its chuck clamps the first end of the input shaft 17.

[0037] According to the method of using the drilling solution of the second embodiment, Figures 24 to 27 As shown, the following steps need to be included: 1) Construct the first foundation groove, the second foundation groove and the foundation wall groove connecting them on the wall surface; the width of the foundation wall groove is smaller than the diameter of the wire threading pipe; 2) Select N screw rods 3 of appropriate length and assemble them into a screw rod assembly through N-1 connectors 5; 3) Connect the tool feeding device 1 and the second fixed connection position of the screw assembly; 4) Connect the drilling device 2 to the screw assembly; 5) Place the tool feeding device 1 in the first foundation groove, the drilling device 2 in the second foundation groove, and the screw assembly in the foundation wall groove; 6) Adjust the depth of the cutting device 1 in the wall so that the feeding direction of the drilling device 2 is parallel to the foundation wall groove; 7) Execute drilling. When the stroke of the Nth screw is exhausted, remove the N-1th connector and the Nth screw; 8) Connect the tool feeding device 1 and the first fixed position of the screw assembly; 9) Connect the drilling device 2 to the screw assembly; 10) Place the tool feeding device 1 in the first foundation groove, the drilling device 2 in the second foundation groove, and the screw assembly in the foundation wall groove; 11) After drilling exceeds stroke A, connect the tool feed device 1 and the second fixed position of the screw assembly; 12) Drill and repeat steps 3 to 11 until the entire foundation wall groove is penetrated to form a space for the wire conduit.

[0038] Example 3, as shown in the figure, the drilling system disclosed by the present invention, Figure 2 、 Figure 3 、 Figure 13 and Figure 14 As shown, it includes a tool feeding device 1, a drilling device 2, a screw rod 3 and a power source 4.

[0039] The tool feeding device 1 is driven by a power source 4. The first end of the screw rod 3 is fixedly connected to the tool feeding device 1, and the screw rod 3 is driven by the tool feeding device 1 to rotate around the axis; the second end of the screw rod 3 is cooperated with the transmission threaded hole in the drilling device 2; the rotation of the screw rod 3 drives the drilling device 2 to generate cutting motion; the axial tension of the screw rod 3 drives the drilling device 2 to generate a feed motion close to the tool feeding device 1.

[0040] The drilling device 2 includes a gear box 21, a guide frame 22, an input shaft 23, a planetary gear set 26 and a drill bit 27; the gear box 21 is fixedly connected to the guide frame 22; the input shaft 23 is rotationally connected to the second end of the gear box 21, and the input shaft 23 is provided with a transmission threaded hole 231 along its own axis, namely the transmission threaded hole 231; the drill bit 27 is rotationally connected to the first end of the gear box 21; the planetary gear set 26 is inside the gear box 21, and the rotation of the input shaft 23 reduces the speed and drives the drill bit 27 to rotate; the guide frame 22 plays a guiding and stabilizing role for the drilling device 2.

[0041] The rotation of screw 3 drives input shaft 23 through transmission threaded hole 231. Input shaft 23, through the deceleration and torque-increasing action of planetary gear set 26, drives drill bit 27 to rotate and drill the wall. Drill bit 27 is obstructed by the wall, which means screw 3 generates axial tension on transmission threaded hole 231, pressing drill bit 27 against the wall. In other words, screw 3 drives transmission threaded hole 231 to rotate, producing the main drilling action on drill bit 27, while also generating axial tension on transmission threaded hole 231, which exerts pressure on drill bit 27. The action of screw 3 is used simultaneously for two functions, complementing each other to achieve drilling. The transmission ratio of planetary gear set 26 is greater than 1. Furthermore, this transmission ratio setting ensures that the drill bit's rotational speed matches the pressure applied to the drill bit by the system.

[0042] The guide frame 22 consists of a stretching body in the upper and lower directions and a cantilever extending in the middle of the stretching body toward and away from the tool feeding device 1. The lower part of the above-mentioned stretching body is the first end of the guide frame 22, the upper part of the above-mentioned stretching body is the second end of the guide frame 22, and the distal end of the above-mentioned cantilever is the third end of the guide frame 22; a screw through hole 222 is provided at the first end of the guide frame 22, the direction of the center line of the screw through hole 222 is consistent with the working direction, and the inner diameter of the screw through hole 222 is larger than the large diameter of the screw 3; the screw 3 passes through the screw through hole 222.

[0043] like Figure 5 and Figure 6 As shown, during the drilling process, the drilling device 2 will be subjected to the torque Mdrill exerted by the wall on the cutting edge of the drill bit 27, and the balancing blade 223 and the inner wall of the foundation wall groove need to act to form a torque Msupport in the opposite direction of Mdrill. Taking the screw 3 as an example with a right-hand thread, observing the drilling device 2 from the direction of the tool feeding device 1, Mdrill is counterclockwise and Msupport is clockwise, which requires that the balancing blade 223 on the left is higher than the balancing blade 223 on the right.

[0044] Furthermore, to prevent the drilling trajectory of the drilling device 2 from deviating toward the wall due to gravity or other random factors during the drilling process, the balancing blade 223 is designed as an inclined blade. Under the action of the torque M, it presses against the inner wall of the foundation wall groove. As the drilling device 2 moves during the drilling process, the force F exerted by the foundation wall groove on the balancing blade 223 tends to pull the drilling device 2 toward the bottom of the foundation wall groove. This force is balanced by the contact between the stopper 221 and the wall surface. In this way, the drilling device 2 drills smoothly in the direction guided by the foundation wall groove during the drilling process.

[0045] In detail, a long strip of balancing blade 223 is provided on each side of the first end of the guide frame 22, the length direction of the balancing blade 223 is consistent with the working direction, and the balancing blade 223 contacts the wall of the foundation wall groove; when observed from the tool feeding device 1 to the drilling device 2, the balancing blade 223 on the left and the balancing blade 223 on the right are of different heights, the center of the left balancing blade 223 and the center of the right balancing blade 223 are at the same distance from the axis of the screw rod 3, and the center of the left balancing blade 223 and the center of the right balancing blade 223 are located on the same plane perpendicular to the axis of the screw rod 3.

[0046] The second end of the guide frame 22 extends outwards to both sides of the cantilever, and the distal end of each cantilever is provided with a threaded through hole in the upper and lower directions. The lower portion of the limiter 221 is externally threaded and the upper portion is a hand-tightening piece. The external thread of the lower portion of the limiter 221 is screwed into the above-mentioned threaded through hole; The third end of the guide frame 22 is fixedly connected to the gear box body 21 .

[0047] like Figures 11 to 14 As shown, the gear box body 21 is an annular stretched body, the center line direction of which is consistent with the working direction, an internal gear is provided on the inner circumference, a boss is provided on the upper part of the outer circumference, and the top of the boss is fixedly connected to the third end of the guide frame 22.

[0048] The end of the gear box body 21 close to the tool feeding device 1 is the first end of the gear box body 21, and the other end is the second end of the gear box body 21; the input shaft 23 is cylindrical, and its center line direction is consistent with the working direction. A threaded hole passing through the end face is provided along the center line direction, namely, the transmission threaded hole 231. The internal thread of the transmission threaded hole 231 matches the thread of the screw rod 3; When the drilling device 2 is in operation, dust particles and the like are present in the surrounding area. In particular, the screw rod 3 may enter the interior of the transmission threaded hole 231. To remove dust particles from the threads of the screw rod 3, the sidewall of the transmission threaded hole 231 is provided with at least one chip groove 232 that penetrates both end faces of the input shaft 23 and has a depth exceeding the major diameter of the thread. Dust particles from the threads of the screw rod 3 are removed while some are allowed to remain in the chip groove 232, thereby achieving smooth meshing. The end of the input shaft 23 facing away from the tool feed mechanism 1 is the second end of the input shaft 23. An external gear is disposed on the outer circumference of the second end of the input shaft 23. A flange extends radially from the second end of the input shaft 23. The input shaft 23 is coaxial with the gearbox 21. A thrust bearing 24 is disposed between the flange at the second end of the input shaft 23 and the second end of the gearbox 21. The input shaft 23 also includes a restraining cover 25, which is an annular rotating body that fits over the outer side of the flange at the second end of the input shaft 23. A small radial and axial gap exists between the restraining cover 25 and the flange at the second end of the input shaft 23. This small gap is intended to prevent the ingress of dust particles from the environment. Sealing rings can also be added in these radial and axial directions for even better protection. A boss is formed on the upper portion of the outer circumference of the restraining cover 25, which is fixedly connected to a boss on the upper portion of the gearbox 21.

[0049] The planetary gear set 26 includes an output frame 263 and a planetary gear 261; the output frame 263 is a circular rotating body, the first end face of the output frame 263 faces the cutting device 1, and the second end face of the output frame 263 faces the gear box body 21; the first end face of the output frame 263 is fixedly connected to the drill bit 27, and a thrust bearing 24 is arranged between the second end face of the output frame 263 and the first end of the gear box body 21; the constraint cover 25 is sleeved on the outside of the output frame 263, and there is a small gap between the constraint cover 25 and the output frame 263 in the radial and axial directions; the upper part of the outer peripheral surface of the constraint cover 25 has a boss, which is fixedly connected to the boss on the upper part of the gear box body 21; the output frame 263 is sleeved on the outside of the input shaft 23 body, and there is a small gap between them. The purpose of the small gap here is to prevent dust particles in the environment from entering; sealing rings can also be added in the above-mentioned radial and axial directions to achieve better protection. At least two short shafts are evenly distributed in the normal direction on the second end surface of the output frame 263, and each short shaft is sleeved with a planetary gear 261. The planetary gear 261 is meshed with the internal gear of the gear box 21 and the external gear at the second end of the input shaft 23 at the same time.

[0050] The planetary gear set 26 includes a first planet carrier 262 and a corresponding first planet gear 261; the side of the first planet carrier 262 facing the drill bit 27 is the first end face of the first planet carrier 262, and the other side is the second end face of the first planet carrier 262; the first end face of the first planet carrier 262 extends outward along the centerline direction, and the outer peripheral surface of the protruding ring is provided with an external gear; at least two short shafts are evenly distributed circumferentially on the second end face of the first planet carrier 262, and each short shaft is provided with a first planet gear 261; the first planet carrier 262 is sleeved on the outside of the input shaft 23 body, and there is a small gap between them; the external gear of the first planet carrier 262 is meshed with the first planet gear 261 of the output carrier 263; the first planet gear 261 on the second end face of the first planet carrier 262 is meshed with the internal gear of the gear box 21 and the external gear at the second end of the input shaft 23 at the same time.

[0051] The planetary gear transmission is compact and can be easily connected in series to achieve a larger transmission ratio. It also includes the second planet carrier 262 to the Nth planet carrier 262, and their corresponding second planetary gears 261 to the Nth planetary gear 261; the second planetary carrier 262 to the Nth planetary carrier 262 are all mounted on the outside of the input shaft 23 body, and there is a small radial gap between them; the external gear of the second planetary carrier 262 is engaged with the first planetary gear 261; the second planetary gear 261 is simultaneously engaged with the internal gear of the gear box body 21 and the external gear of the third planetary carrier 262; the Nth planetary gear 261 is simultaneously engaged with the internal gear of the gear box body 21 and the external gear at the second end of the input shaft 23.

[0052] like Figure 13 and Figure 14As shown, a through hole is provided at the center of the drill bit 27, the inner diameter of the through hole is larger than the major diameter of the screw rod 3, and the drill bit 27 is sleeved on the outside of the screw rod 3; the drill bit 27 is located between the first end of the guide frame 22 and the output frame 263; the end of the drill bit 27 facing the guide frame 22 is the first end of the drill bit 27, and the other end is the second end of the drill bit 27; the first end of the drill bit 27 is conical, with cutting edges 271 uniformly distributed along the busbar direction, and auxiliary cutting edges extending to the circumferential surface, and the main back surfaces and auxiliary back surfaces of the cutting edges 271 and the auxiliary cutting edges form a chip groove 272. The cutting edge 271 rotates and sweeps out a circular cutting surface and cuts in the working direction to form a hollow cylinder. The hollow area of ​​this cylinder is entirely in the foundation wall groove, and the outer diameter of the cylinder is larger than the outer diameter of the gear box body 21; this ensures that the inner wall of the foundation wall groove will not remain in the area where the wire pipe is expected to be threaded, and the cut wall debris is discharged from the chip groove 272 backward through the gear box body 21 and the gap between the wall groove formed after drilling.

[0053] The second end of the drill bit 27 is evenly distributed with at least two blind holes, which is sleeved on the end column corresponding to the first end surface of the output frame 263. When the drill bit 27 is worn, it can be removed from the output frame 263 and replaced.

[0054] like Figure 5 and Figure 6 As shown, the contact area between the balancing blade 223 and the wall of the foundation wall groove is small; the end of the balancing blade 223 close to the tool feeding device 1 is lower than the other end; when viewed from the tool feeding device 1 toward the drilling device 2, when the screw rod 3 is clockwise, the center of the left balancing blade 223 is lower than the center of the right balancing blade 223; when the screw rod 3 is counterclockwise, the center of the left balancing blade 223 is higher than the center of the right balancing blade 223; like Figure 28 and Figure 29 As shown, in order to bring the screw hole 222 of the drilling device 2 closer to the tool feed device 1, this helps reduce the aforementioned value A and helps reduce the size of the tool feed device 1. Specifically, the inner diameter of the screw hole 222 at the first end of the guide frame 22 is larger than the outer diameter of the input shaft 23 body; the inner diameter of the central hole of the drill bit 27 is larger than the outer diameter of the input shaft 23 body; the screw hole 222 at the first end of the guide frame 22 and the central hole of the drill bit 27 are sleeved outside the input shaft 23 body.

[0055] like Figure 3 、 Figure 9 and Figure 10 As shown, the method for using the drilling system is characterized by comprising the following steps: 1) Construct the first foundation groove, the second foundation groove and the foundation wall groove connecting them on the wall surface; the width of the foundation wall groove is smaller than the diameter of the wire threading pipe; 2) Connect the tool feeding device 1 and the drilling device 2 to the screw rod 3 respectively; 3) Place the tool feeding device 1 in the first foundation groove, the drilling device 2 in the second foundation groove, and the screw rod 3 in the foundation wall groove; 4) Adjust the depth of the cutting device 1 in the wall so that the feeding direction of the drilling device 2 is parallel to the foundation wall groove; 5) Connect the cutting device 1 to the power source 4, drive the drilling device 2 to pass through the foundation wall groove, and drill its side to form a space for accommodating the threading pipe.

[0056] The embodiments of the present invention are presented for purposes of illustration and description and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are chosen and described in order to better illustrate the principles of the invention and its practical application and to enable those skilled in the art to understand the invention and design various embodiments with various modifications as suited for specific applications.

Claims

1. A drilling system, characterized in that: It comprises a tool feeding device (1), a drilling device (2), a screw rod (3) and a power source (4); The tool feeding device (1) is driven by a power source (4), a first end of a screw rod (3) is fixedly connected to the tool feeding device (1), and the screw rod (3) is driven by the tool feeding device (1) to rotate around an axis; The second end of the screw rod (3) is cooperatively connected with the transmission threaded hole in the drilling device (2); The rotation of the screw rod (3) drives the drilling device (2) to generate a cutting motion; The axial pulling force of the screw rod (3) drives the drilling device (2) to generate a feeding motion close to the tool feeding device (1); The drilling device (2) includes a gear box (21), a guide frame (22), an input shaft (23), a planetary gear set (26) and a drill bit (27); The gear box body (21) is fixedly connected to the guide frame (22); The input shaft (23) is rotatably connected to the second end of the gear box body (21), and the input shaft (23) is provided with a transmission threaded hole (231) along its own axis, namely the transmission threaded hole; The drill bit (27) is rotatably connected to the first end of the gear box (21); The planetary gear set (26) is inside the gear box (21), and the rotation of the input shaft (23) is reduced to drive the drill bit (27) to rotate; The guide frame (22) plays a guiding and stabilizing role for the drilling device (2).

2. A drilling system according to claim 1, characterized in that: The guide frame (22) is composed of a stretching body in the upper and lower directions and a cantilever extending in the middle of the stretching body in a direction away from the tool feeding device (1), the lower part of the stretching body is the first end of the guide frame (22), the upper part of the stretching body is the second end of the guide frame (22), and the distal end of the cantilever is the third end of the guide frame (22); A screw rod through hole (222) is provided at the first end of the guide frame (22), the direction of the center line of the screw rod through hole (222) is consistent with the working direction, and the inner diameter of the screw rod through hole (222) is larger than the major diameter of the screw rod (3); A long strip balancing blade (223) is provided on each side of the first end of the guide frame (22), the length direction of the balancing blade (223) is consistent with the working direction, and the balancing blade (223) contacts the wall of the foundation wall groove; when viewed from the tool feeding device (1) toward the drilling device (2), the balancing blade (223) on the left side and the balancing blade (223) on the right side are of different heights, the center of the left balancing blade (223) and the center of the right balancing blade (223) are at the same distance from the axis of the screw rod (3), and the center of the left balancing blade (223) and the center of the right balancing blade (223) are located on the same plane perpendicular to the axis of the screw rod (3); The second end of the guide frame (22) extends cantilevers to both sides, and the distal end of each cantilever is provided with a threaded through hole in the upper and lower directions. The lower portion of the limiter (221) is an external thread and the upper portion is a hand-tightening piece. The external thread of the lower portion of the limiter (221) is screwed into the above-mentioned threaded through hole; The third end of the guide frame (22) is fixedly connected to the gear box body (21).

3. A drilling system according to claim 2, characterized in that: The gear box body (21) is a circular stretched body, the center line direction of which is consistent with the working direction, the inner peripheral surface is provided with an internal gear, the upper part of the outer peripheral surface is provided with a boss, and the top of the boss is fixedly connected to the third end of the guide frame (22); One end of the gear box body (21) close to the tool feeding device (1) is the first end of the gear box body (21), and the other end is the second end of the gear box body (21); The input shaft (23) is cylindrical in shape, and its centerline direction is consistent with the working direction. A threaded hole penetrating the end face is provided along the centerline direction, namely, a transmission threaded hole (231). The internal thread of the transmission threaded hole (231) matches the thread of the screw rod (3). The side wall of the transmission threaded hole (231) is provided with at least one chip groove (232) penetrating through both end surfaces of the input shaft (23) and having a depth exceeding the major diameter of the thread; The end of the input shaft (23) away from the tool feeding device (1) is the second end of the input shaft (23), and an external gear is provided on the outer peripheral surface of the second end of the input shaft (23); The second end of the input shaft (23) extends radially out of a flange; The input shaft (23) is coaxial with the gear housing (21), and a thrust bearing (24) is provided between the flange at the second end of the input shaft (23) and the second end of the gear housing (21); It also includes a restraining cover (25), which is an annular rotating body and is sleeved on the outer side of the second end flange of the input shaft (23). There is a small gap between the restraining cover (25) and the second end flange of the input shaft (23) in the radial and axial directions. The upper portion of the outer peripheral surface of the restraining cover (25) is provided with a boss, which is fixedly connected to the boss on the upper portion of the gear box body (21).

4. A drilling system according to claim 3, characterized in that: The planetary gear set (26) includes an output carrier (263) and planetary gears (261); The output rack (263) is a circular rotating body, the first end face of the output rack (263) faces the tool feeding device (1), and the second end face of the output rack (263) faces the gear box body (21); The first end face of the output frame (263) is fixedly connected to the drill bit (27), and a thrust bearing (24) is provided between the second end face of the output frame (263) and the first end of the gear box (21); a restraining cover (25) is sleeved on the outside of the output frame (263), and a small gap is provided between the restraining cover (25) and the output frame (263) in radial and axial directions; The upper portion of the outer peripheral surface of the restraint cover (25) is provided with a boss, which is fixedly connected to the boss on the upper portion of the gear box body (21); The output frame (263) is sleeved on the outside of the input shaft (23) body, with a small gap between them; At least two short shafts are evenly distributed in the normal direction on the second end surface of the output frame (263), and each short shaft is sleeved with a planetary gear (261). The planetary gear (261) is simultaneously engaged with the internal gear of the gear box (21) and the external gear at the second end of the input shaft (23).

5. A drilling system according to claim 4, characterized in that: The planetary gear set (26) includes a first planet carrier (262) and a corresponding first planet gear (261); The first planet carrier (262) has a first end surface facing the drill bit (27) and a second end surface facing the drill bit (27). A protruding ring extends outward from a first end surface of the first planet carrier (262) along a centerline direction, and an external gear is provided on an outer peripheral surface of the protruding ring; at least two short shafts are evenly distributed in a circumferential direction on a second end surface of the first planet carrier (262), and each short shaft is sleeved with a first planet gear (261); The first planet carrier (262) is sleeved on the outside of the input shaft (23) body, with a small gap between them; The outer gear of the first planetary carrier (262) is meshed with the first planetary gear (261) of the output carrier (263); The first planetary gear (261) on the second end surface of the first planetary carrier (262) is meshed with the internal gear of the gear box (21) and the external gear at the second end of the input shaft (23) at the same time.

6. A drilling system according to claim 5, characterized in that: Also included are the second planet carrier (262) to the Nth planet carrier (262), and their corresponding second planet gears (261) to the Nth planet gear (261); The second planet carrier (262) to the Nth planet carrier (262) are all sleeved on the outside of the input shaft (23) body, with a small radial gap between them; The outer gear of the second planetary carrier (262) is meshed with the first planetary gear (261); The second planetary gear (261) is meshed with the internal gear of the gear box (21) and the external gear of the third planetary carrier (262); The Nth planetary gear (261) is simultaneously engaged with the internal gear of the gear box (21) and the external gear at the second end of the input shaft (23).

7. A drilling system according to claim 4, characterized in that: A through hole is provided at the center of the drill bit (27), the inner diameter of the through hole is larger than the major diameter of the screw rod (3), and the drill bit (27) is sleeved on the outside of the screw rod (3); The drill bit (27) is located between the first end of the guide frame (22) and the output frame (263); One end of the drill bit (27) facing the guide frame (22) is the first end of the drill bit (27), and the other end is the second end of the drill bit (27); The first end of the drill bit (27) is tapered, with cutting edges (271) uniformly distributed along the generatrix direction and secondary cutting edges extending to the circumferential surface; the main flank surfaces and secondary flank surfaces of the cutting edges (271) and the secondary cutting edges form a chip groove (272); The second end of the drill bit (27) is evenly distributed with at least two blind holes, which are sleeved on the end column corresponding to the first end surface of the output frame (263).

8. A drilling system according to claim 7, characterized in that: The contact area between the balancing blade (223) and the wall of the foundation wall groove is small; One end of the balancing blade (223) close to the cutting device (1) is lower than the other end; Observe from the tool feeding device (1) toward the drilling device (2); When the screw (3) is right-handed, the center of the left balancing blade (223) is lower than the center of the right balancing blade (223); When the screw rod (3) is rotated in the left direction, the center of the balancing blade (223) on the left side is higher than the center of the balancing blade (223) on the right side.

9. A drilling system according to claim 8, characterized in that: The inner diameter of the screw rod through hole (222) at the first end of the guide frame (22) is larger than the outer diameter of the input shaft (23) body; The inner diameter of the central through hole of the drill bit (27) is larger than the outer diameter of the input shaft (23) body; The screw rod through hole (222) at the first end of the guide frame (22) and the central through hole of the drill bit (27) are sleeved on the outside of the input shaft (23) body.

10. The method for using a drilling system according to any one of claims 1 to 9, wherein: The following steps are involved: 1) The first foundation groove, the second foundation groove and the foundation wall groove connecting them are constructed on the wall surface; the width of the foundation wall groove is smaller than the diameter of the wire threading pipe; 2) connecting the tool feeding device (1) and the drilling device (2) to the screw rod (3) respectively; 3) placing the tool feeding device (1) in the first foundation groove, the drilling device (2) in the second foundation groove, and the screw rod (3) in the foundation wall groove; 4) Adjust the tool feed device (1) to a depth position in the wall so that the feed direction of the drilling device (2) is parallel to the foundation wall groove; 5) Connect the tool feeding device (1) to the power source (4), drive the drilling device (2) to pass through the foundation wall groove, drill its side, and form a space for accommodating the threading pipe.

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