A synchronous rectangular deep hole drilling machine with horizontal cantilever adapted to rock stratum

Abstract

The application discloses a synchronous rectangular deep hole drilling machine with horizontal cantilever suitable for rock stratum, which comprises a drilling rig with a cable and a drilling machine hoisted at the lower end of the cable, wherein the drilling machine comprises a pipeline fixing frame, a rock slag treatment mechanism, a sliding horizontal drilling assembly and a vertical drilling device connected in sequence from top to bottom; the rock slag treatment mechanism comprises a stirring device, a crushing device, a slag suction system, a slag discharge system and a grouting system; the grouting system is connected to the sliding horizontal drilling assembly and the vertical drilling device; the sliding horizontal drilling assembly comprises a horizontal drilling device, a horizontal hydraulic cylinder and a horizontal drilling reaction force frame, wherein the horizontal hydraulic cylinder is fixed on the horizontal drilling reaction force frame and drives the horizontal drilling device to move laterally. The application has the advantages that the horizontal cantilever structure and the vertical pile body can be once formed into a hole without other mechanical assistance, thereby improving the construction efficiency and saving the construction and equipment costs.

Description

Technical Field

[0001] This invention relates to the field of anti-slide pile drilling equipment, specifically to a synchronous rectangular deep hole drilling machine with a horizontal cantilever adapted to rock formations. Background Technology

[0002] In engineering projects such as slope protection, roadbed construction, foundation pit excavation, and tunnel entrance / exit construction, anti-slide piles are the most effective measure to transfer the lateral thrust of the soil and rock mass to the stable strata below the sliding surface, resisting lateral thrust and mitigating engineering and geological hazards. Anti-slide piles are divided into rectangular cross-section anti-slide piles and circular cross-section anti-slide piles. Rectangular anti-slide piles have advantages such as high lateral stiffness and high single pile bearing capacity, effectively enhancing anti-slide force and increasing the anti-slide coefficient. Therefore, rectangular cross-section anti-slide piles are widely used in various engineering fields.

[0003] Traditional rectangular cross-section anti-slide piles have large cross-sections and cannot fully utilize the strength of the soil and rock in front of the pile. For anti-slide piles with horizontal cantilever structures, the horizontal cantilever can fully utilize the strength of the soil and rock in front of the pile, improving the anti-slide capacity of the pile. However, drilling the horizontal cantilever pile holes for rectangular anti-slide piles with horizontal cantilever structures is extremely difficult. Traditional rectangular cross-section anti-slide piles are usually excavated manually or mechanically. Collapses caused by manual excavation account for 65% of all collapse accidents, and it is inefficient and costly. Mechanical excavation is safer and more efficient. Therefore, using mechanical drilling to excavate pile holes for rectangular anti-slide piles with horizontal cantilever structures within soil and rock layers is of great significance for ensuring the safety of construction personnel and improving efficiency.

[0004] Currently, there are various rectangular drilling rigs and excavation methods, such as:

[0005] Patent No. CN 106836354 A, "Mechanical Hole Forming Device for Rectangular Anti-slide Piles", uses multiple cutting blades to form a rectangular shovel head. The rear end of the shovel head is equipped with a counterweight or hydraulic propulsion device to realize the drilling of rectangular pile holes.

[0006] Patent No. CN 103244053 A "Rectangular Drilling Machine" mainly uses two cam bodies to drive two T-shaped cutter heads evenly distributed at the bottom of two steel frames to move towards each other and back and forth, cutting the soil into rectangular holes.

[0007] Patent No. CN 104533300 A, "Rectangular Drilling Machine", has a conical drill bit at the bottom of a rectangular transmission box and cross-shaped long cutters on the four sides. The conical drill bit drills in to form a circular pile hole, and then the cross-shaped long cutters rotate and cut to shape it into a rectangular pile hole.

[0008] The patent number CN 207715083 U, "A Rectangular Anti-slide Pile Drilling Rig", mainly involves setting a circular drill cylinder and a rectangular drill cylinder at the bottom of the drill rod. The circular drill cylinder is screwed in to form a circular pile hole, and then the rectangular drill cylinder cuts the soil around the circular pile hole to form a rectangular pile hole.

[0009] Patent No. CN 105951798 A, "A Rectangular Drilling Machine", mainly uses a motor to drive four concave cylindrical parts with agitators to cut the soil and drill rectangular pile holes.

[0010] Existing drilling machines mainly form vertical rectangular pile holes in soil and rock, but they have the following problems: (1) They cannot drill rectangular anti-slide pile holes with horizontal cantilever structures in soil, nor can they drill in rock (gravel, pebble, hard rock and other strata); (2) They cannot drill rectangular pile holes with horizontal cantilever structures and vertical pile bodies in rock at the same time; (3) They use other machinery (grab bucket) or auxiliary measures (slurry positive circulation slag removal method) to clean the slag in the pile hole. The integration of drilling and slag removal equipment is low, and the drilling construction efficiency is low and the cost is high. Summary of the Invention

[0011] The purpose of this invention is to address the shortcomings of the prior art by providing a synchronous rectangular deep-hole drilling rig with a horizontal cantilever adapted to rock formations. This rig is hoisted using cables on a drilling rig to accommodate the required length of the deep hole, and utilizes its own weight to generate pressure for downward drilling. The rig achieves synchronous construction of the rectangular deep hole with the horizontal cantilever by controlling a sliding horizontal drilling assembly and a vertical drilling device. Specifically, the vertical drilling device excavates vertical rectangular pile holes using cylindrical drilling assemblies arranged in a matrix. After the vertical rectangular pile hole is excavated to the designed depth of the horizontal cantilever, the sliding horizontal drilling assembly, driven by a horizontal hydraulic cylinder, drills the horizontal cantilever pile hole while the vertical drilling device continues drilling the vertical pile hole. After the horizontal cantilever pile hole is completed, the sliding horizontal drilling assembly retracts, and finally, the vertical drilling device continues to excavate the rectangular pile hole to the designed depth. Furthermore, when the vertical drilling device and the sliding horizontal drilling assembly are tumbling through the rock formation, a grouting system injects mud into the pile hole to facilitate the extraction of rock fragments mixed with the mud.

[0012] The objective of this invention is achieved through the following technical solutions:

[0013] A synchronous rectangular deep-hole drilling rig with a horizontal cantilever adapted to rock formations, characterized in that the rectangular deep-hole drilling rig includes a drilling rig with a cable and a drilling machine suspended at the lower end of the cable. The drilling machine includes, from top to bottom, a pipe fixing frame, a rock cuttings handling mechanism, a sliding horizontal drilling assembly, and a vertical drilling device; wherein:

[0014] The rock slag treatment mechanism includes a mixing device, a crushing device, a slag suction system, a slag discharge system, and a grouting system. The mixing device includes a mixing tank and a mixing mechanism mounted on the mixing tank. The slag suction port on the mixing tank is connected to the slag suction system, and the slag discharge port on the mixing tank is connected to the slag discharge system. The grouting system is connected to the sliding horizontal drilling assembly and the vertical drilling device. The grouting system includes a grouting main pipe and a grouting pump mounted on the grouting main pipe. The lower end of the grouting main pipe branches into a vertical grouting branch pipe and a horizontal grouting branch pipe. The nozzles of the vertical grouting branch pipes extend into the vertical drilling device, and the nozzles of the horizontal grouting branch pipes extend into the horizontal drilling assembly. Each nozzle is equipped with a grouting valve. The pipe bodies of both the vertical and horizontal grouting branch pipes are telescopic pipes.

[0015] The sliding horizontal drilling assembly includes a horizontal drilling device, a horizontal hydraulic cylinder, and a horizontal drilling reaction frame. The horizontal hydraulic cylinder is fixed to the horizontal drilling reaction frame and drives the horizontal drilling device to move laterally. The horizontal drilling device includes several horizontally arranged cylindrical drilling assemblies that form a rectangular excavation face vertically. The horizontal drilling reaction frame of the sliding horizontal drilling assembly includes a reaction plate, an upper side plate, a lower side plate, and hydraulic side guards. The upper side plate and the lower side plate are respectively located on the upper and lower parts of the reaction plate, and the hydraulic side guards are respectively located on both sides of the reaction plate. The horizontal drilling device is located between the upper side plate and the lower side plate. The horizontal hydraulic cylinder is located within the space formed by the upper side plate, the lower side plate, the hydraulic side guard plate, and the reaction plate. The cylinder end face of the horizontal hydraulic cylinder is fixed to the reaction plate. The piston rod of the horizontal hydraulic cylinder is connected to the horizontal drilling device. Vertical guide grooves for installing vertical guide plates are provided on both the upper side plate and the lower side plate. The vertical guide plates pass through the vertical guide grooves on the upper side plate and the lower side plate, and both ends of the vertical guide plates are connected to the mixing tank and the vertical drilling device, respectively. A rigid enclosure is installed circumferentially along the bottom surface of the lower side plate, and a rubber pad is provided on the rigid enclosure.

[0016] The drilling rig includes a vehicle-mounted platform, a steel column, a tie rod, a hinge shaft, a guide rail, a slider, a steel cantilever beam, a winch motor, and a cable support. The steel column is vertically mounted on the vehicle-mounted platform. The upper end of the tie rod is hinged to the upper end of the steel column, and the lower end is hinged to the hinge shaft fixed on the vehicle-mounted platform. The guide rail is vertically mounted and fixed along the steel column. The slider is slidably mounted on the guide rail. The steel cantilever beam is fixed to the slider. The winch motor is fixed to the steel cantilever beam, and the cable support is fixed below the steel cantilever beam. The winch motor drives the cable to move up and down in the vertical direction.

[0017] The slag suction system includes a main slag suction pipe and vertical and horizontal slag suction branches branching from the suction port of the main slag suction pipe. The suction head of the vertical slag suction branch is connected to the vertical drilling device, and the suction head of the horizontal slag suction branch is connected to the sliding horizontal drilling assembly. Each suction head is equipped with a slag suction valve. The pipe bodies of both the vertical and horizontal slag suction branches are telescopic pipes.

[0018] The slag discharge system includes a slag discharge pipe and a slag discharge pump. One end of the slag discharge pump is connected to the slag discharge pipe, and the other end is connected to the slag discharge port on the mixing tank.

[0019] The slag suction main pipe, the grouting main pipe, and the slag discharge pipe are all arranged and fixed along the pipe fixing frame.

[0020] The vertical drilling device includes a U-shaped fork plate and several cylindrical drill assemblies mounted on the U-shaped fork plate and forming a rectangular excavation face in the horizontal direction. The U-shaped fork plate of the vertical drilling device consists of a web plate, wing plates disposed on both sides of the bottom surface of the web plate, and a steel support disposed in the middle of the bottom surface of the web plate. The cylindrical drill assembly of the vertical drilling device includes two cylinders, a motor driving the cylinders to rotate, several roller cutter assemblies spaced apart on the surface of the cylinders, and several reamer assemblies disposed between adjacent roller cutter assemblies. The roller cutter assembly includes a roller cutter base and a ring of roller cutters fixed on the roller cutter base. The reamer assembly includes a reamer base and reamer cutters inclinedly fixed on the reamer base. The rotating shaft of the motor passes through the cylinders on both sides, and the end of the rotating shaft is correspondingly disposed in the rotating shaft holes of the wing plates on both sides of the U-shaped fork plate. The outer shell of the motor is welded and fixed to the steel support.

[0021] The stirring mechanism includes a main gear and several auxiliary gears that mesh with and drive the main gear. The main gear is driven to rotate by a stirring motor. A stirring main shaft extending into the stirring tank is coaxially mounted on the main gear, and stirring blades are mounted on the stirring main shaft. An auxiliary stirring shaft extending into the stirring tank is coaxially mounted on the auxiliary gear, and stirring blades are mounted on the auxiliary stirring shaft.

[0022] The advantages of this invention are:

[0023] (1) Rectangular pile holes for horizontal cantilever structures are drilled in deep rock mass using a cable and a retractable horizontal cylindrical drill with spaced cutters and rollers.

[0024] (2) Simultaneous drilling of horizontal cantilever and embedded section pile holes can improve construction efficiency;

[0025] (3) Both the horizontal cantilever structure and the vertical pile body can be drilled in one go without the need for other mechanical assistance, thereby improving construction efficiency and saving construction and equipment costs;

[0026] (4) The rock is crushed twice by the crushing box, which can better discharge it from the pile hole and prevent the slag discharge pipe from being blocked;

[0027] (5) It has both drilling and slag removal functions, and the drilling rig has a high degree of integration, which realizes the uninterrupted synchronous operation of drilling and slag removal, reduces construction procedures, saves construction costs, and improves drilling efficiency. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the present invention;

[0029] Figure 2 This is a schematic diagram showing the positions of various cross-sections of the present invention;

[0030] Figure 3 This is a partial schematic diagram of the present invention;

[0031] Figure 4 For the present invention Figure 2 AA section view in the middle;

[0032] Figure 5 This is a front view of the vertical drilling device in this invention;

[0033] Figure 6 For the present invention Figure 5 BB section view in the middle;

[0034] Figure 7 For the present invention Figure 2 CC section view in the middle;

[0035] Figure 8 For the present invention Figure 2 DD section view in the middle;

[0036] Figure 9 For the present invention Figure 2 EE section view;

[0037] Figure 10 For the present invention Figure 2 FF section view;

[0038] Figure 11 This is a schematic diagram of the sliding horizontal drill assembly of the present invention;

[0039] Figure 12 For the present invention Figure 11 Cross-sectional view of GG in China;

[0040] Figure 13 for Figure 2 Cross-sectional view of HH section;

[0041] Figure 14 for Figure 2 Section II;

[0042] Figure 15 for Figure 2 Cross-sectional view of JJ;

[0043] Figure 16 for Figure 2 Cross-sectional view of KK in China;

[0044] Figure 17 for Figure 2 Middle LL section view;

[0045] Figure 18 This is a schematic diagram of the construction steps of the synchronous rectangular deep hole drilling rig with horizontal cantilever adapted to rock formations in this invention;

[0046] like Figure 1-18 As shown, the labels in the figure are as follows:

[0047] 1. Vertical drilling device; 2. Sliding horizontal drilling assembly; 3. Mixing device; 4. Crushing device; 5. Slag suction system; 6. Pipe fixing frame; 7. Slag discharge system; 8. Grouting system; 9. Drilling rig;

[0048] 11. Cylindrical drill assembly; 111. Cylindrical part; 112. Auger assembly; 113. Roller assembly; 114. Motor; 115. Motor shaft; 1121. Auger base; 1122. Auger; 1131. Roller base; 1132. Roller; 12. U-shaped fork plate; 121. Wing plate; 122. Web plate; 123. Steel support; 124. Shaft hole; 125. Vertical slag suction branch pipe through hole; 126. Vertical grouting branch pipe through hole;

[0049] 21. Horizontal drilling device; 211. Horizontal slag suction branch pipe through hole; 212. Horizontal grouting branch pipe through hole; 22. Horizontal hydraulic cylinder; 23. Horizontal drilling reaction frame; 231. Hydraulic side guard plate; 232. Upper side plate; 233. Lower side plate; 234. Reaction plate; 235. Slag suction main pipe through hole; 236. Grouting main pipe through hole; 237. Vertical guide groove; 238. Rigid enclosure; 239. Rubber pad; 2310. Vertical guide plate;

[0050] 31. Mixing tank; 32. Double-layer large blades; 33. Main mixing shaft; 34. Double-layer small blades; 35. Auxiliary mixing shaft; 36. Single-layer small blades; 37. Main gear; 38. Main gear isolation pad; 39. Auxiliary gear; 310. Auxiliary gear isolation pad; 311. Steel cover plate; 312. Mixing motor;

[0051] 41. Crushing box; 42. Middle partition; 43. Connecting pipe; 44. Frame; 45. Fan motor; 46. Fan blades; 47. Crushing blade; 48. Filter screen;

[0052] 51. Main suction pipe, 52. Vertical suction branch pipe, 53. Horizontal suction branch pipe, 54. Telescopic pipe, 55. Suction head, 56. Vertical suction valve, 57. Horizontal suction valve;

[0053] 61. Top steel plate, 62. Middle steel plate, 63. Bottom steel plate, 64. Side upright plate, 65. Square through hole, 66. Slag discharge pipe fixing hole, 67. Grouting pipe fixing hole;

[0054] 71. Slag discharge pipe; 72. Slag discharge pump;

[0055] 81. Grouting main pipe, 82. Grouting pump, 83. Vertical grouting branch pipe, 84. Horizontal grouting branch pipe, 85. Nozzle, 86. Vertical grouting valve, 87. Horizontal grouting valve;

[0056] 91. Hoist motor; 92. Fixed shaft; 93. Cable; 94. Cable support; 95. Steel cantilever beam; 96. Slider; 97. Steel column; 98. Guide rail; 99. Hinge shaft; 910. Tie rod; 911. Vehicle platform;

[0057] a. Rock strata, b. Drilling rig, c. Free section pile hole, d. Horizontal cantilever pile hole, e. Embedded section pile hole. Implementation

[0058] The features and other related features of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments, so as to facilitate understanding by those skilled in the art:

[0059] Example: Figure 1-17 As shown, this embodiment specifically relates to a synchronous rectangular deep hole drilling rig with a horizontal cantilever adapted to rock formations. The rectangular deep hole drilling rig includes a drilling rig 9 and a drilling machine hoisted by a cable 93 on the drilling rig 9. The drilling rig includes, from top to bottom, a pipe fixing frame 6, a rock cuttings treatment mechanism, a sliding horizontal drilling assembly 2, and a vertical drilling device 1. The rock cuttings treatment mechanism includes a stirring device 3, a crushing device 4, a slag suction system 5, a slag discharge system 7, and a grouting system 8.

[0060] like Figure 1As shown, the drilling rig 9 includes a vehicle-mounted platform 911, a steel column 97, a tie rod 910, a hinge shaft 99, a guide rail 98, a slider 96, a steel cantilever beam 95, a cable support 94, a winch motor 91, a fixed shaft 92, and a cable 93. The vehicle-mounted platform 911 has tracked wheels and is located on the ground. The steel column 97 is vertically mounted at the front end of the vehicle-mounted platform 911. The tie rod 910 provides diagonal bracing reinforcement to the steel column 97. Specifically, the upper end of the tie rod 910 is hinged to the upper end of the steel column 97, and the lower end... The system is hinged to the hinge shaft 99 of the vehicle platform 911; the guide rail 98 is fixedly attached to the steel column 97 to form a vertical track; the slider 96 is slidably mounted on the guide rail 98 and can slide vertically under the drive of the power mechanism; the steel cantilever beam 95 is fixed to the slider 96; the cable bracket 94 is fixed to the bottom surface of the steel cantilever beam 95; the winch motor 91 is fixed to the steel cantilever beam 95 via the fixed shaft 92; the winch motor 91 is used to drive the cable 93 and the drilling rig suspended at its lower end to perform lifting and lowering movements. It should be noted that, due to the large weight of the drilling rig, it can move downwards under its own weight, eliminating the need for the drill rod to press down as before; and the cable 93 has sufficient length to meet the drilling requirements for rectangular deep holes.

[0061] like Figure 1-9 As shown, the vertical drilling device 1 can be used for deep hole drilling of rectangular anti-slide piles. The vertical drilling device 1 mainly includes several cylindrical drill assemblies 11 and a U-shaped fork plate 12 for use as a mounting frame. The U-shaped fork plate 12 mainly includes a web plate 122 and wing plates 121 located on both sides of the web plate 122. Based on the number of cylindrical drill assemblies 11, a steel support 123 is vertically welded at the middle position of the web plate 122. Each set of cylindrical drill assemblies 11 consists of two cylindrical drills, a motor 114 and a motor shaft 115. In this embodiment, the vertical drilling device 1 has four cylindrical drills, which are arranged in a matrix to form a rectangular cutting surface to form a rectangular pile hole during its downward cutting process. The cylindrical drill includes a cylinder 111, a plurality of hobbing cutter assemblies 113 spaced apart on the surface of the cylinder 111, and a plurality of reamer assemblies 112 spaced apart between adjacent hobbing cutter assemblies 113 on the surface of the cylinder 111. A centrally located steel support 123 is welded or bolted to the housing of a motor 114. The motor shaft 115 of the motor 114 drives the cylinders 111 on both sides to rotate, and the end of the motor shaft 115 is supported in the shaft holes 124 of the side flanges 121. Figure 1-7As shown, the height of the roller cutter assembly 113 protruding from the cylinder 111 is higher than that of the auger assembly 112. Therefore, when cutting the rock, the roller cutter 1132 on the roller cutter assembly 113 contacts the rock first. That is, the roller cutter assembly 113 first crushes the rock surface into several large rock blocks, and then the auger assembly 112 further cuts the large rock blocks on the excavation surface into small-diameter rock blocks (or rock debris). The roller cutter assembly 113 includes a roller cutter base 1131 and a ring of roller cutters 1132 fixed on the roller cutter base 1131. The auger assembly 112 includes an auger base 1121 and an auger 1122. The auger 1122 is installed at an angle under the fixation of the auger base 1121 to facilitate the excavation of rock strata. For rock masses, if the roller cutter 1132 directly crushes the rock mass at the excavation face or the auger 1122 directly excavates it, the strength, hardness, and wear resistance of the roller cutter and auger materials need to meet high requirements. This not only increases the difficulty of developing the roller cutter and auger materials but also increases construction costs. By combining the roller cutter 1132 and the auger 1122, the roller cutter 1132 only crushes the rock mass at the excavation face, reducing its strength. This makes it easier for the auger 1122 to cut the rock mass, thus reducing the requirements for the strength, hardness, and wear resistance of the roller cutter and auger materials, and also reducing wear on the cutter and auger. Therefore, the method of first crushing the rock mass at the excavation face with the roller cutter 1132, followed by cutting the crushed low-strength rock mass with the auger 1122, not only improves work efficiency but also reduces tool wear and lowers construction costs. In addition, the web plate 122 is provided with a vertical slag suction branch pipe through hole 125 and a vertical grouting branch pipe through hole 126, which are used to fix the vertical slag suction branch pipe 52 of the slag suction system 5 and the vertical grouting branch pipe 83 of the grouting system 8, respectively.

[0062] like Figure 1-13 As shown, the sliding horizontal drill assembly 2 can be used for excavating horizontal cantilever pile holes. The sliding horizontal drill assembly 2 includes a horizontal drill device 21, a horizontal hydraulic cylinder 22, and a horizontal drill reaction frame 23. The horizontal hydraulic cylinder 22 is fixed on the horizontal drill reaction frame 23 and drives the horizontal drill device 21 to move laterally.

[0063] The horizontal drilling device 21 also includes several cylindrical drill assemblies 11 and a U-shaped fork plate 12 serving as a mounting frame. The structures of the cylindrical drill assemblies 11 and U-shaped fork plate 12 in the horizontal drilling device 21 are the same as those in the vertical drilling device 1, except for their orientation (the horizontal drilling device 21 is vertically positioned, while the vertical drilling device 1 is horizontally positioned), so they will not be described in detail here. In this embodiment, the sliding horizontal drilling assembly 2 also has four cylindrical drills, which are arranged in a matrix to form a rectangular cutting surface, forming a rectangular horizontal cantilever pile hole during its side cutting process. The horizontal drilling reaction frame 23 includes a reaction plate 234, an upper side plate 232, a lower side plate 233, and a hydraulic side guard plate 231. The upper side plate 232 and the lower side plate 233 are respectively located on the upper and lower parts of the reaction plate 234, and the hydraulic side guard plate 231 is respectively located on both sides of the reaction plate 234. The horizontal drilling device 21 is located between the upper side plate 232 and the lower side plate 233. The horizontal hydraulic cylinder 22 is located in the space formed by the upper side plate 232, the lower side plate 233, the hydraulic side guard plate 231, and the reaction plate 234. The hydraulic side guard plate 231 can prevent the rock mass from contacting the horizontal hydraulic cylinder 22 during excavation, thereby protecting the horizontal hydraulic cylinder 22. The cylinder end face of the horizontal hydraulic cylinder 22 is fixed on the reaction plate 234. The piston rod of the horizontal hydraulic cylinder 22 is connected to the horizontal drilling device 21. Vertical guide grooves 237 are provided on both the upper side plate 232 and the lower side plate 233. The size and shape of the vertical guide grooves 237 are matched with the size and shape of the vertical guide plate 2310. The vertical guide grooves 237 are used to install the vertical guide plate 2310. The vertical guide plate 2310 passes through the vertical guide grooves 237 on the upper side plate 232 and the lower side plate 233. Both ends of the vertical guide plate 2310 are connected to the mixing box 31 of the mixing device 3 and the vertical drilling device 1, respectively. The sliding horizontal drilling assembly 2 can move along the height direction of the vertical guide plate 2310. At the same time, the vertical guide plate 2310 can also limit the horizontal position of the sliding horizontal drilling assembly 2 (horizontal drilling reaction frame 23) to prevent the sliding horizontal drilling assembly 2 (horizontal drilling reaction frame 23) from moving in the horizontal direction. A rigid barrier 238 is installed around the bottom surface of the lower side plate 233. A rubber pad 239 is provided on the rigid barrier 238. When the sliding horizontal drill assembly 2 comes into contact with the vertical drill device 1, the rubber pad 239 can prevent the rigid barrier 238 from colliding with the horizontal drill reaction frame 23 of the sliding horizontal drill assembly 2, thus playing a buffering role.In addition, the U-shaped fork plate 12 of the horizontal drilling device 21 is provided with a horizontal slag suction branch pipe through hole 211 and a horizontal grouting branch pipe through hole 212, which are used to fix the horizontal slag suction branch pipe 53 of the slag suction system 5 and the horizontal grouting branch pipe 84 of the grouting system 8, respectively. The upper side plate 232 is provided with a slag suction main pipe through hole 235 and a grouting main pipe through hole 236, which are used to fix the slag suction main pipe 51 of the slag suction system 5 and the grouting main pipe 81 of the grouting system 8, respectively. The lower side plate 233 is provided with a vertical slag suction branch pipe through hole 125 and a vertical grouting branch pipe through hole 126, which are used to fix the vertical slag suction branch pipe 52 of the slag suction system 5 and the vertical grouting branch pipe 83 of the grouting system 8, respectively.

[0064] like Figure 1-17 As shown, the rock slag treatment mechanism includes a mixing device 3, a crushing device 4, a slag suction system 5, a slag discharge system 7, and a grouting system 8.

[0065] The mixing device 3 mainly includes a mixing box 31 and a mixing mechanism. The mixing box 31 is fixedly installed on the upper surface of the sliding horizontal drill assembly 2 (vertical guide plate 2310). The mixing mechanism includes a main gear 37 and multiple auxiliary gears 39 meshing with it. The main gear 37 is driven to rotate by the mixing motor 312, which in turn drives the auxiliary gears 39 to rotate. A mixing main shaft 33 extending into the mixing box 31 is coaxially arranged on the main gear 37. The mixing main shaft 33 is equipped with mixing blades, which are double-layered large blades 32. Each auxiliary gear 39 is coaxially arranged with a mixing auxiliary shaft 35 extending into the mixing box 31. The mixing auxiliary shaft 35 is also equipped with mixing blades. The mixing blades on some of the mixing auxiliary shafts 35 are double-layered small blades 34, and the mixing blades on the other part of the mixing auxiliary shafts 35 are single-layered small blades 36. By mixing the rock debris and mud in the mixing box 31, a uniformly mixed mud can be obtained, which is convenient for discharge. To prevent slurry from seeping into the gearbox containing the main gear 37 and auxiliary gear 39 during mixing, a main gear isolation pad 38 is provided at the connection point between the main mixing shaft 33 and the mixing box 31, and an auxiliary gear isolation pad 310 is provided at the connection point between the auxiliary mixing shaft 35 and the mixing box 31. Figure 3 As shown, a steel cover plate 311 is located on top of the gearbox containing the main gear 37 and the auxiliary gear 39, for connecting to the pipe fixing bracket 6. The mixing tank 31 is equipped with a slag suction port and a slag discharge port.

[0066] A slag suction system 5 is connected to the slag suction port of the mixing tank 31. The slag suction system 5 mainly includes a slag suction main pipe 51, a vertical slag suction branch pipe 52, and a horizontal slag suction branch pipe 53. One end of the slag suction main pipe 51 is connected to the slag suction port of the mixing tank 31 via the crushing device 4. The other end of the slag suction main pipe 51 (i.e., the suction end) is connected to the vertical slag suction branch pipe 52 and the horizontal slag suction branch pipe 53. The vertical slag suction branch pipe 52 extends into the vertical drilling device 1, and the suction head 55 of the vertical slag suction branch pipe 52 is close to the vertical drilling device. At the cylindrical drill assembly 11 of the horizontal drill 21, a vertical slag suction valve 56 is installed at the suction head 55 of the vertical slag suction branch pipe 52 to control the pipeline opening and closing. The horizontal slag suction branch pipe 53 extends into the horizontal drill 21, and its suction head 55 is close to the cylindrical drill assembly 11 of the horizontal drill 21 to allow it to suction the slag excavated from the vertical drill. A horizontal slag suction valve 57 is installed at the suction head 55 of the horizontal slag suction branch pipe 53 to control the pipeline opening and closing. Furthermore, both the vertical slag suction branch pipe 52 and the horizontal slag suction branch pipe 53 utilize telescopic pipes 54.

[0067] The extracted rock debris is crushed into fine particles by the crushing device 4 and then enters the mixing tank 31. The crushing device 4 mainly includes a crushing tank 41, a partition plate 42, a connecting pipe 43, a frame 44, a blower motor 45, blower blades 46, a crushing blade 47, and a filter screen 48. The partition plate 42 is inclined in the crushing tank 41 to form a ramp that facilitates the flow of rock debris. The blower motor 45 is installed on the top plate in the crushing tank 41 via the frame 44. The blower motor 45 has blower blades 46 on its rotating shaft. The high-speed rotating blower motor 45 and blower blades 46 can create negative pressure in the slag suction main pipe 51. A crushing blade 47 is installed at the installation location of the blower motor 45 so that the extracted rock debris must be crushed by the crushing blade 47 before entering the mixing tank 41 through the connecting pipe 43. A screen 48 is installed at the end face of the blower motor 45 to filter large rock debris particles and prevent rock debris from flowing into the mixing tank 31 from the blower motor 45.

[0068] The grout outlet of the grouting system 8 extends into the vertical drilling device 1 and the sliding horizontal drilling assembly 2. The grouting system 8 mainly includes a grouting main pipe 81, a grouting pump 82, a vertical grouting branch pipe 83 and a horizontal grouting branch pipe 84. One end of the grouting main pipe 81 is connected to the grouting pump 82 located on the ground, and the other end is connected to the vertical grouting branch pipe 83 and the horizontal grouting branch pipe 84. The vertical grouting branch pipe 83 extends into the vertical drilling device 1, with its nozzle 85 located near the cylindrical drill assembly 11. Grouting system 8 injects mud into the rock debris, mixing the rock debris with the mud for easy extraction by the suction system 5. A vertical grouting valve 86 is installed at the nozzle 85 of the vertical grouting branch pipe 83 to control the pipeline's flow. Similarly, the horizontal grouting branch pipe 84 extends into the horizontal drilling device 21, with its nozzle 85 located near the cylindrical drill assembly 11. Grouting system 8 injects mud into the rock debris, mixing the rock debris with the mud for easy extraction by the suction system 5. A horizontal grouting valve 87 is installed at the nozzle 85 of the horizontal grouting branch pipe 84 to control the pipeline's flow. Both the vertical grouting branch pipe 83 and the horizontal grouting branch pipe 84 are telescopic pipes.

[0069] like Figure 1-17 As shown, the pipe fixing frame 6 has a box-shaped structure, including a top steel plate 61, a middle steel plate 62, a bottom steel plate 63, and several side uprights 64 connecting the three. Furthermore, a square through hole 65 is provided on the bottom steel plate 63 of the pipe fixing frame 6 for installing the mixing motor 312. Additionally, slag discharge pipe fixing holes 66 for the slag discharge pipe 71 and grouting pipe fixing holes 67 for the grouting main pipe 81 are also provided on the top steel plate 61, middle steel plate 62, and bottom steel plate 63. To prevent pipe swaying during drilling, the pipe fixing frame 6 provides fixation for each passing pipe. It should be noted that four lifting points are provided on the top steel plate 61 for cable 93 connection to ensure stable hoisting of the pipe fixing frame 6.

[0070] like Figure 1-18 As shown, this embodiment also includes the following construction methods:

[0071] (S1) In the rock stratum a, the vertical drilling device 1 on the drilling rig b is used to drill vertical rectangular pile holes to form free section pile holes c until the designed depth of the horizontal cantilever pile hole d is reached. During this process, the suction head 55 on the vertical slag suction branch pipe 52 near the cylindrical drill assembly 11 of the vertical drilling device 1 and the nozzle 85 on the vertical grouting branch pipe 83 respectively perform slag suction and grouting.

[0072] (S2) After the sliding horizontal drilling assembly 2 reaches the bottom design elevation of the horizontal cantilever pile hole d, the horizontal hydraulic cylinder 22 of the sliding horizontal drilling assembly 2 is activated. The piston rod of the horizontal hydraulic cylinder 22 extends to the side of the rock mass to drive the horizontal drilling device 21 to move laterally. The sliding horizontal drilling assembly 2 drills laterally to the design length of the horizontal cantilever pile hole d, and the vertical drilling device 1 drills downward to the embedded section pile hole e. During this process, the suction head 55 on the vertical slag suction branch pipe 52 near the cylindrical drilling assembly 11 of the vertical drilling device 1 and the nozzle 85 on the vertical grouting branch pipe 83 respectively perform slag suction and grouting. The suction head 55 on the horizontal slag suction branch pipe 53 near the cylindrical drilling assembly 11 of the horizontal drilling device 21 and the nozzle 85 on the horizontal grouting branch pipe 84 respectively perform slag suction and grouting.

[0073] (S3) The piston rod of the horizontal hydraulic cylinder 22 retracts to its minimum stroke, causing the horizontal drilling device 21 to retract into the free section pile hole c. The sliding horizontal drilling assembly 2 moves downward under its own weight and contacts the vertical drilling device 1. The cylindrical drilling assembly 11 on the vertical drilling device 1 continues to drill downward to the designed depth of the embedded section pile hole e. During this process, the suction head 55 on the vertical slag suction branch pipe 52 near the cylindrical drilling assembly 11 of the vertical drilling device 1 and the nozzle 85 on the vertical grouting branch pipe 83 respectively perform slag suction and grouting.

[0074] The advantages of this embodiment are:

[0075] (1) Rectangular pile holes for horizontal cantilever structures are drilled in deep rock mass using a cable and a retractable horizontal cylindrical drill with spaced cutters and rollers.

[0076] (2) Simultaneous drilling of horizontal cantilever and embedded section pile holes can improve construction efficiency;

[0077] (3) Both the horizontal cantilever structure and the vertical pile body can be drilled in one go without the need for other mechanical assistance, thereby improving construction efficiency and saving construction and equipment costs;

[0078] (4) The rock is crushed twice by the crushing box, which can better discharge it from the pile hole and prevent the slag discharge pipe from being blocked;

[0079] (5) It has both drilling and slag removal functions, and the drilling rig has a high degree of integration, which realizes the uninterrupted synchronous operation of drilling and slag removal, reduces construction procedures, saves construction costs, and improves drilling efficiency.

[0080] Although the above embodiments have described the concept and embodiments of the present invention in detail with reference to the accompanying drawings, those skilled in the art will recognize that various improvements and modifications can still be made to the present invention without departing from the scope of the claims, and therefore will not be elaborated here.

Claims

1. A synchronous rectangular deep-hole drilling rig with a horizontal cantilever adapted to rock formations, characterized in that... The rectangular deep-hole drilling rig includes a drilling rig with a cable and a drilling machine suspended from the lower end of the cable. The drilling rig includes, from top to bottom, a pipe fixing frame, a rock cuttings handling mechanism, a sliding horizontal drilling assembly, and a vertical drilling device; wherein: The rock slag treatment mechanism includes a mixing device, a crushing device, a slag suction system, a slag discharge system, and a grouting system. The mixing device includes a mixing tank and a mixing mechanism mounted on the mixing tank. The slag suction port on the mixing tank is connected to the slag suction system, and the slag discharge port on the mixing tank is connected to the slag discharge system. The grouting system is connected to the sliding horizontal drilling assembly and the vertical drilling device. The grouting system includes a grouting main pipe and a grouting pump mounted on the grouting main pipe. The lower end of the grouting main pipe branches into a vertical grouting branch pipe and a horizontal grouting branch pipe. The nozzles of the vertical grouting branch pipes extend into the vertical drilling device, and the nozzles of the horizontal grouting branch pipes extend into the sliding horizontal drilling assembly. Each nozzle is equipped with a grouting valve. The pipe bodies of both the vertical and horizontal grouting branch pipes are telescopic pipes. The sliding horizontal drilling assembly includes a horizontal drilling device, a horizontal hydraulic cylinder, and a horizontal drilling reaction frame. The horizontal hydraulic cylinder is fixed to the horizontal drilling reaction frame and drives the horizontal drilling device to move laterally. The horizontal drilling device includes several horizontally arranged cylindrical drilling assemblies that form a rectangular excavation face vertically. The horizontal drilling reaction frame of the sliding horizontal drilling assembly includes a reaction plate, an upper side plate, a lower side plate, and hydraulic side guards. The upper side plate and the lower side plate are respectively located on the upper and lower parts of the reaction plate, and the hydraulic side guards are respectively located on both sides of the reaction plate. The horizontal drilling device is located between the upper side plate and the lower side plate. The horizontal hydraulic cylinder is located within the space formed by the upper side plate, the lower side plate, the hydraulic side guard plate, and the reaction plate. The cylinder end face of the horizontal hydraulic cylinder is fixed to the reaction plate. The piston rod of the horizontal hydraulic cylinder is connected to the horizontal drilling device. Vertical guide grooves for installing vertical guide plates are provided on both the upper side plate and the lower side plate. The vertical guide plates pass through the vertical guide grooves on the upper side plate and the lower side plate, and both ends of the vertical guide plates are connected to the mixing tank and the vertical drilling device, respectively. A rigid enclosure is installed circumferentially along the bottom surface of the lower side plate, and a rubber pad is provided on the rigid enclosure.

2. The synchronous rectangular deep-hole drilling rig with a horizontal cantilever adapted to rock formations according to claim 1, characterized in that... The drilling rig includes a vehicle-mounted platform, a steel column, a tie rod, a hinge shaft, a guide rail, a slider, a steel cantilever beam, a winch motor, and a cable support. The steel column is vertically mounted on the vehicle-mounted platform. The upper end of the tie rod is hinged to the upper end of the steel column, and the lower end is hinged to the hinge shaft fixed on the vehicle-mounted platform. The guide rail is vertically mounted and fixed along the steel column. The slider is slidably mounted on the guide rail. The steel cantilever beam is fixed to the slider. The winch motor is fixed to the steel cantilever beam, and the cable support is fixed below the steel cantilever beam. The winch motor drives the cable to move up and down in the vertical direction.

3. The synchronous rectangular deep-hole drilling rig with a horizontal cantilever adapted to rock formations according to claim 1, characterized in that... The slag suction system includes a main slag suction pipe and vertical and horizontal slag suction branches branching from the suction port of the main slag suction pipe. The suction head of the vertical slag suction branch is connected to the vertical drilling device, and the suction head of the horizontal slag suction branch is connected to the sliding horizontal drilling assembly. Each suction head is equipped with a slag suction valve. The pipe bodies of both the vertical and horizontal slag suction branches are telescopic pipes.

4. A synchronous rectangular deep-hole drilling rig with a horizontal cantilever adapted to rock formations as described in claim 3, characterized in that... The slag discharge system includes a slag discharge pipe and a slag discharge pump. One end of the slag discharge pump is connected to the slag discharge pipe, and the other end is connected to the slag discharge port on the mixing tank.

5. A synchronous rectangular deep-hole drilling rig with a horizontal cantilever adapted to rock formations according to claim 4, characterized in that... The slag suction main pipe, the grouting main pipe, and the slag discharge pipe are all arranged and fixed along the pipe fixing frame.

6. A synchronous rectangular deep-hole drilling rig with a horizontal cantilever adapted to rock formations according to claim 1, characterized in that... The vertical drilling device includes a U-shaped fork plate and several cylindrical drill assemblies mounted on the U-shaped fork plate and forming a rectangular excavation face in the horizontal direction. The U-shaped fork plate of the vertical drilling device consists of a web plate, wing plates disposed on both sides of the bottom surface of the web plate, and a steel support disposed in the middle of the bottom surface of the web plate. The cylindrical drill assembly of the vertical drilling device includes two cylinders, a motor driving the cylinders to rotate, several roller cutter assemblies spaced apart on the surface of the cylinders, and several reamer assemblies disposed between adjacent roller cutter assemblies. The roller cutter assembly includes a roller cutter base and a ring of roller cutters fixed on the roller cutter base. The reamer assembly includes a reamer base and reamer cutters inclinedly fixed on the reamer base. The rotating shaft of the motor passes through the cylinders on both sides, and the end of the rotating shaft is correspondingly disposed in the rotating shaft holes of the wing plates on both sides of the U-shaped fork plate. The outer shell of the motor is welded and fixed to the steel support.

7. A synchronous rectangular deep-hole drilling rig with a horizontal cantilever adapted to rock formations as described in claim 1, characterized in that... The stirring mechanism includes a main gear and several auxiliary gears that mesh with and drive the main gear. The main gear is driven to rotate by a stirring motor. A stirring main shaft extending into the stirring tank is coaxially mounted on the main gear, and stirring blades are mounted on the stirring main shaft. An auxiliary stirring shaft extending into the stirring tank is coaxially mounted on the auxiliary gear, and stirring blades are mounted on the auxiliary stirring shaft.

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