CN117027644A

CN117027644A - Synchronous rectangular shallow hole drill with haunched horizontal cantilever suitable for rock stratum

Info

Publication number: CN117027644A
Application number: CN202311091509.7A
Authority: CN
Inventors: 赵璐; 黄昌富; 姚铁军
Original assignee: China Railway 15th Bureau Group Co Ltd
Current assignee: China Railway 15th Bureau Group Co Ltd
Priority date: 2023-08-29
Filing date: 2023-08-29
Publication date: 2023-11-10

Abstract

The invention discloses a synchronous rectangular shallow hole drill with a haunched horizontal cantilever, which is suitable for a rock stratum, and comprises a drill carriage with a vertical drill rod, wherein the lower end of the vertical drill rod is sequentially provided with a pipeline fixing frame, a rock residue treatment mechanism, a sliding horizontal drill component and a vertical drilling device; 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 communicated into the sliding horizontal drilling assembly and the vertical drilling device; the sliding horizontal drill component comprises a horizontal drill device, a horizontal hydraulic cylinder and a horizontal drill reaction frame; the sliding horizontal drill component and the vertical drill device are fixed through an electromagnetic device. The invention has the advantages that: the rectangular pile hole with the haunched horizontal cantilever structure is drilled in the shallow rock body through a drill rod, an electromagnetic device and a telescopic horizontal cylindrical drill with a reamer and a hob; the armpit, the horizontal cantilever and the vertical pile body can be formed at one time without other mechanical assistance, so that the purposes of improving the construction efficiency and saving the construction and equipment cost are achieved.

Description

Synchronous rectangular shallow hole drill with haunched horizontal cantilever suitable for rock stratum

Technical Field

The invention relates to the field of anti-slide pile drilling equipment, in particular to a synchronous rectangular shallow hole drilling machine with a haunching horizontal cantilever, which is suitable for a rock stratum.

Background

In the projects such as side slope support, roadbed construction, foundation pit excavation, tunnel entrance and exit construction and the like, the slide-resistant pile is the most effective measure capable of transmitting the side thrust of a rock-soil body into a stable stratum below a sliding surface, resisting the side thrust and treating the projects and geological disasters. The slide-resistant piles are divided into rectangular section slide-resistant piles and circular section slide-resistant piles. The rectangular anti-skid pile has the advantages of high lateral rigidity, high single pile bearing capacity and the like, and can effectively enhance the anti-skid force and improve the anti-skid coefficient. Therefore, rectangular-section slide piles are widely used in various engineering fields.

The traditional rectangular section slide-resistant pile has a larger section and can not fully utilize the strength of rock-soil mass in front of the pile. For the anti-slide pile with the horizontal cantilever structure, the horizontal cantilever can fully utilize the strength of rock and soil mass in front of the pile, so that the anti-slide capacity of the anti-slide pile is improved, but the hole forming difficulty of a horizontal cantilever pile hole of the rectangular anti-slide pile with the horizontal cantilever is extremely high. The traditional rectangular section slide-resistant pile adopts a manual excavation and mechanical excavation mode, collapse caused by manual hole digging pile construction accounts for 65% of the total number of collapse accidents, and the traditional rectangular section slide-resistant pile is low in efficiency, high in cost, and safer and more efficient in mechanical excavation. Therefore, the mechanical drilling of pile holes with the horizontal cantilever rectangular anti-slide piles in the rock and soil layers has important significance for ensuring the safety of constructors and improving the efficiency.

At present, rectangular drilling equipment and excavation modes are various, for example:

the patent number CN 106836354A 'rectangular anti-slide pile mechanical pore-forming device' is characterized in that a rectangular shovel head is formed by a plurality of cutting blades, and a counterweight or a hydraulic propulsion device is arranged at the rear end of the shovel head to drill rectangular pile holes.

The patent number CN 103244053A rectangular drilling machine mainly drives T-shaped cutter heads uniformly distributed at the lower parts of two steel frames to move in opposite directions and reciprocate through two cam bodies, and cuts soil into rectangular holes.

The patent number CN 104533300A rectangular drilling machine is characterized in that a conical drill bit is arranged at the bottom of a rectangular transmission case, cross-shaped long cutters are arranged on four sides of the rectangular transmission case, the conical drill bit drills to form a circular pile hole, and then the circular pile hole is trimmed into the rectangular pile hole through rotary cutting of the cross-shaped long cutters.

The patent No. CN 207715083U, a rectangular anti-slide pile hole-forming drilling machine, mainly sets a round drilling cylinder and a rectangular drilling cylinder at the bottom of a drill rod, the round drilling cylinder is screwed into a round pile hole, and then the rectangular pile hole is formed by cutting soil around the round pile hole through the rectangular drilling cylinder.

The patent No. CN 105951798A 'rectangular drilling machine' mainly uses a motor to drive four concave waist cylinders with stirring blades to cut soil body, and drills rectangular pile holes.

The existing drilling machine mainly forms vertical rectangular pile holes in a rock-soil body, but has the following problems:

(1) The rectangular anti-slide pile holes with the horizontal cantilever and the haunched horizontal cantilever structure cannot be drilled in the soil body, and the drilling in rock bodies (broken stone, pebble, hard rock and other strata) cannot be realized;

(2) The rectangular pile holes of the horizontal cantilever structure and the vertical pile body cannot be synchronously drilled in the rock body;

(3) Other machines (grab buckets) or auxiliary measures (a mud positive circulation deslagging method) are adopted to clean the slag soil in the pile holes, and the integration level of drilling and deslagging equipment is low, the drilling construction efficiency is low and the cost is high.

Disclosure of Invention

According to the defects of the prior art, the invention provides a synchronous rectangular shallow hole drill with a haunching horizontal cantilever, which is suitable for a rock stratum, wherein a drill carriage with a vertical drill rod is used for driving a sliding horizontal drilling assembly and a vertical drilling device to synchronously construct rectangular shallow holes with the haunching horizontal cantilever, namely, the vertical drilling device is used for excavating vertical rectangular pile holes by adopting a cylindrical drilling assembly distributed in a matrix form, and after the vertical rectangular pile holes are excavated to the design depth with the haunching horizontal cantilever, the sliding horizontal drilling assembly is used for driving the horizontal drilling device to drill the haunching pile holes by a horizontal hydraulic cylinder; afterwards, the electromagnet is powered off to separate the sliding horizontal drilling assembly from the vertical drilling device, the sliding horizontal drilling assembly and the vertical drilling device drill a horizontal cantilever pile hole and a embedded section rectangular pile hole simultaneously and respectively, the sliding horizontal drilling assembly is retracted after the horizontal cantilever pile hole is drilled, and finally, the vertical drilling device continues to drill down the rectangular pile hole to the designed depth; in addition, when the vertical drilling device and the sliding horizontal drilling assembly roll-twist rock stratum, mud slurry is injected into the pile hole through the grouting system so as to be beneficial to sucking rock blocks mixed with the mud.

The invention is realized by the following technical scheme:

the rectangular shallow hole drilling machine is characterized by comprising a drill carriage with a vertical drill rod, wherein a pipeline fixing frame, a rock slag processing mechanism, a sliding horizontal drilling assembly and a vertical drilling device are sequentially arranged at the lower end of the vertical drill rod from top to bottom; wherein:

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 stirring device comprises a stirring box and a stirring mechanism arranged on the stirring box, and the lower end of the vertical drill rod is connected with and drives the stirring mechanism; the slag suction port arranged on the stirring box is connected with the slag suction system, and the slag discharge port arranged on the stirring box is connected with the slag discharge system; the grouting system is communicated into the sliding horizontal drilling assembly and the vertical drilling device, the grouting system comprises a grouting main pipe and grouting pumps arranged on the grouting main pipe, the lower port of the grouting main pipe is branched into a vertical grouting branch pipe and a horizontal grouting branch pipe, a spray head of the vertical grouting branch pipe extends into the vertical drilling device, a spray head of the horizontal grouting branch pipe extends into the horizontal drilling assembly, grouting valves are arranged at the spray heads, and telescopic pipes are adopted for the pipe bodies of the vertical grouting branch pipe and the horizontal grouting branch pipe;

the sliding horizontal drilling assembly comprises a horizontal drilling device, a horizontal hydraulic cylinder and a horizontal drilling reaction frame, wherein the horizontal hydraulic cylinder is fixed on the horizontal drilling reaction frame and drives the horizontal drilling device to laterally move, and the horizontal drilling device comprises a plurality of cylindrical drilling assemblies which are horizontally arranged and vertically form a rectangular excavation surface;

the vertical drilling device comprises a U-shaped fork plate and a plurality of cylindrical drilling components which are arranged on the U-shaped fork plate and form a rectangular excavation surface in the horizontal direction;

the sliding horizontal drilling assembly is fixed with the vertical drilling device through an electromagnetic device, the electromagnetic device comprises a magnet base and an electromagnet, the magnet base is circumferentially arranged at the bottom of the sliding horizontal drilling assembly, a circle of electromagnet is arranged on the magnet base, and the electromagnet is magnetically attracted to the vertical drilling device when being electrified.

The horizontal drilling reaction frame of the sliding horizontal drilling assembly comprises a reaction plate, an upper side plate, a lower side plate and a hydraulic side guard plate, wherein the upper side plate and the lower side plate are respectively arranged at the upper part and the lower part of the reaction plate, the hydraulic side guard plates are respectively arranged at the two sides of the reaction plate, the horizontal drilling device is arranged between the upper side plate and the lower side plate, the horizontal hydraulic cylinder is arranged in a space formed by the upper side plate, the lower side plate, the hydraulic side guard plate and the reaction plate, the end face of a cylinder barrel of the horizontal hydraulic cylinder is fixed on the reaction plate, a piston rod of the horizontal hydraulic cylinder is connected with the horizontal drilling device, vertical guide grooves for installing vertical guide plates are respectively formed in the upper side plate and the lower side plate, and the vertical guide plates penetrate through the vertical guide grooves on the upper side plate and the lower side plate and two ends of the vertical guide plates are respectively connected with the stirring box and the vertical drilling device.

The drill carriage comprises a vehicle-mounted platform, a steel upright post, a pull rod, a hinged shaft, a guide rail, a sliding block, a steel cantilever beam and a rotating motor, wherein the steel upright post is vertically arranged on the vehicle-mounted platform, the upper end of the pull rod is hinged with the upper end of the steel upright post, the lower end of the pull rod is hinged with the hinged shaft fixed on the vehicle-mounted platform, the guide rail is vertically arranged and fixed along the steel upright post, the sliding block is slidably assembled on the guide rail, the steel cantilever beam is fixed on the sliding block, and the rotating motor is fixed on the steel cantilever beam and drives the vertical drill rod to rotate.

The U-shaped fork plate of the vertical drilling device consists of a web plate, wing plates arranged on two sides of the bottom surface of the web plate and a steel support arranged in the middle of the bottom surface of the web plate; the cylindrical drilling assembly of the vertical drilling device comprises two cylinders, a motor for driving the cylinders to rotate, a plurality of hob assemblies arranged on the surfaces of the cylinders at intervals and a plurality of reamer assemblies arranged between the adjacent hob assemblies, wherein each hob assembly comprises a hob base and a circle of hob fixed on the hob base, each reamer assembly comprises a reamer base and a reamer obliquely fixed on the reamer base, a rotating shaft of the motor penetrates through the cylinders on two sides and the end parts of the rotating shaft are correspondingly arranged in rotating shaft holes of the wing plates on two sides of the U-shaped fork plate, and a shell of the motor is welded and fixed on the steel support.

The stirring mechanism comprises a main gear and a plurality of auxiliary gears which are meshed with the main gear for transmission, the lower end of the vertical drill rod drives the main gear to rotate, a stirring main rotating shaft which extends into the stirring box is coaxially arranged on the main gear, and stirring blades are arranged on the stirring main rotating shaft; the auxiliary gear is coaxially provided with a stirring auxiliary rotating shaft extending into the stirring box, and the stirring auxiliary rotating shaft is provided with stirring blades.

The slag sucking system comprises a slag sucking main pipe, a vertical slag sucking branch pipe and a horizontal slag sucking branch pipe, wherein the vertical slag sucking branch pipe and the horizontal slag sucking branch pipe are branched from a suction port of the slag sucking main pipe, a suction head of the vertical slag sucking branch pipe is connected into the vertical drilling device, a suction head of the horizontal slag sucking branch pipe is connected into the sliding horizontal drilling assembly, slag sucking valves are arranged at the suction heads respectively, and a pipe body of the vertical slag sucking branch pipe and a pipe body of the horizontal slag sucking branch pipe are telescopic pipes.

The slag discharging system comprises a slag discharging pipe and a slag discharging pump, wherein one end of the slag discharging pump is connected with the slag discharging pipe, and the other end of the slag discharging pump is connected with the slag discharging port on the stirring box.

The pipeline fixing frame is sleeved on the outer side of the vertical drill rod, and the slag suction main pipe, the grouting main pipe and the slag discharge pipe are all fixedly arranged along the pipeline fixing frame.

The invention has the advantages that:

(1) The rectangular pile hole with the haunched horizontal cantilever structure is drilled in the shallow rock body through a drill rod, an electromagnetic device and a telescopic horizontal cylindrical drill with a reamer and a hob;

(2) The aim of improving the construction efficiency can be achieved by synchronously drilling the horizontal cantilever and the pile hole of the embedded section;

(3) The haunching, the horizontal cantilever and the vertical pile body can be formed at one time without other mechanical assistance, so that the purposes of improving the construction efficiency and saving the construction and equipment cost are achieved;

(4) Rock is crushed for the second time through the crushing box, so that the pile hole can be better discharged, and the slag discharge pipe is prevented from being blocked;

(5) Meanwhile, the drilling machine has the functions of drilling and deslagging, the integration level of the drilling machine is high, uninterrupted synchronous drilling and deslagging are realized, the construction procedures are reduced, the construction cost is saved, and the drilling construction efficiency is improved.

Drawings

FIG. 1 is a schematic illustration of the present invention;

FIG. 2 is a schematic view of the cross-sectional positions of the present invention;

FIG. 3 is a partial schematic view of the present invention;

FIG. 4 is a cross-sectional view A-A of FIG. 2 in accordance with the present invention;

FIG. 5 is a front view of the vertical drilling apparatus of the present invention;

FIG. 6 is a cross-sectional view B-B of FIG. 5 in accordance with the present invention;

FIG. 7 is a cross-sectional view of the C-C of FIG. 2 in accordance with the present invention;

FIG. 8 is a D-D cross-sectional view of FIG. 2 according to the present invention;

FIG. 9 is a cross-sectional view E-E of FIG. 2 in accordance with the present invention;

FIG. 10 is a cross-sectional view of F-F of FIG. 2 in accordance with the present invention;

FIG. 11 is a schematic view of a sliding horizontal drill assembly of the present invention;

FIG. 12 is a section view of the G-G of FIG. 11 in accordance with the present invention;

FIG. 13 is a section view H-H of FIG. 2;

FIG. 14 is a cross-sectional view I-I of FIG. 2;

FIG. 15 is a section view of J-J of FIG. 2;

FIG. 16 is a cross-sectional view of K-K of FIG. 2;

FIG. 17 is a cross-sectional view of L-L of FIG. 2;

FIG. 18 is a schematic view of the construction steps of the adaptive rock strata synchronous belt haunching horizontal cantilever rectangular shallow hole drill according to the present invention;

as shown in fig. 1-18, the labels in the figures are respectively:

1. the vertical drilling device comprises a vertical drilling device, a sliding horizontal drilling assembly, a stirring device, a crushing device, a slag sucking system, a pipeline fixing frame, a slag discharging system, a grouting system and a drill carriage, wherein the vertical drilling device comprises a vertical drilling device, a sliding horizontal drilling assembly, a stirring device, a crushing device, a slag sucking system, a pipeline fixing frame, a slag discharging system, a grouting system and a drill carriage;

11. the cylindrical drilling component 111, the cylindrical, 112, the reamer component 113, the hob component 114, the motor 115, the motor rotating shaft 1121, the reamer base 1122, the reamer 1131, the hob base 1132, the hob, the 12U-shaped fork plate 121, the wing plate 122, the web plate 123, the steel support 124, the rotating shaft hole 125, the vertical slag suction branch pipe through hole 126 and the vertical grouting branch pipe through hole;

21. the horizontal drilling device comprises 211 parts of horizontal slag suction branch pipe through holes, 212 parts of horizontal grouting branch pipe through holes, 22 parts of horizontal hydraulic cylinders, 23 parts of horizontal drilling reaction frames, 231 parts of hydraulic side guard plates, 232 parts of upper side plates, 233 parts of lower side plates, 234 parts of reaction plates, 235 parts of slag suction main pipe through holes, 236 parts of grouting main pipe through holes, 237 parts of vertical guide grooves, 238 parts of electromagnets, 239 parts of magnet bases, 2310 parts of bolts, 2311 parts of screw holes, 2312 parts of vertical guide plates.

31. Stirring box 32, double-layer big blade 33, stirring main rotating shaft 34, double-layer small blade 35, stirring auxiliary rotating shaft 36, single-layer small blade, 37, 38, 39, 310, 311, 312, drill pipes;

41. the crushing box, 42, middle partition plates, 43, connecting pipes, 44, a rack, 45, a fan motor, 46, fan blades, 47, crushing cutters and 48, and a filter screen;

51. the slag sucking main pipe is 52, the vertical slag sucking branch pipe is 53, the horizontal slag sucking branch pipe is 54, the telescopic pipe is 55, the suction head is 56, the vertical slag sucking valve is 57;

61. the grouting device comprises a top steel plate, a middle steel plate, a bottom steel plate, a side vertical plate, a circular through hole, a slag discharging pipe fixing hole and a grouting pipe fixing hole, wherein the top steel plate, the middle steel plate, the bottom steel plate, the side vertical plate, the circular through hole and the circular through hole are respectively arranged at the bottom and the top and the bottom;

71. slag discharging pipe 72. Slag discharging pump;

81. the grouting device comprises a grouting main pipe, 82, a grouting pump, 83, a vertical grouting branch pipe, 84, a horizontal grouting branch pipe, 85, a spray head, 86, a vertical grouting valve and 87;

91. the vehicle-mounted platform comprises a rotating motor, 92, a steel cantilever beam, 93, a sliding block, 94, a steel upright post, 95, a guide rail, 96, a hinged shaft, 97, a pull rod and 98;

a. rock stratum b, drilling machine c, free section pile hole d, armpit hole e, horizontal cantilever pile hole f, embedding section pile hole.

Description of the embodiments

The features of the present invention and other related features are described in further detail below by way of example in conjunction with the following drawings, to facilitate understanding by those skilled in the art:

examples: as shown in fig. 1-17, the present embodiment specifically relates to a synchronous rectangular shallow hole drill with a haunching horizontal cantilever, which is suitable for a rock stratum, and the rectangular shallow hole drill comprises a drill carriage 9, a pipeline fixing frame 6, a rock residue treatment mechanism, a sliding horizontal drill assembly 2 and a vertical drill device 1; the drill carriage 9 is provided with a vertically arranged drill rod 312, the pipeline fixing frame 6 is sleeved on the rod body of the drill rod 312, and the rock slag treatment mechanism, the sliding horizontal drill assembly 2 and the vertical drill device 1 are sequentially connected from top to bottom from the lower end of the drill rod 312, wherein the rock slag treatment mechanism comprises a stirring device 3, a crushing device 4, a slag suction system 5, a slag discharge system 7 and a grouting system 8.

As shown in fig. 1, the drill carriage 9 includes a vehicle-mounted platform 98, a steel upright post 94, a pull rod 97, a hinge shaft 96, a guide rail 95, a sliding block 93, a steel cantilever beam 92 and a rotating motor 91, wherein the vehicle-mounted platform 98 is provided with a track wheel capable of running and is positioned on the ground, the steel upright post 94 is vertically erected at the front end of the vehicle-mounted platform 98, the pull rod 97 forms a diagonal bracing reinforcing effect on the steel upright post 94, and in particular, the upper end of the pull rod 97 is hinged with the upper end of the steel upright post 94, and the lower end of the pull rod 97 is hinged with the hinge shaft 96 on the vehicle-mounted platform 98; the guide rail 95 is attached and fixed along the steel upright post 94 to form a track in the vertical direction, and the sliding block 93 is slidably assembled on the guide rail 95 and can slide in the vertical direction under the drive of the power mechanism; the steel cantilever beam 92 is fixed on the sliding block 93, the rotating motor 91 is installed on the steel cantilever beam 92, and the vertically arranged drill rod 312 is driven to rotate by the rotating motor 91 and can move along with the sliding block 93 in the vertical direction, namely, the drill rod 312 can drill downwards under the driving of the sliding block 93.

As shown in fig. 1-9, the vertical drilling device 1 may be used for shallow hole drilling of rectangular slide piles. The vertical drilling device 1 mainly comprises a plurality of cylindrical drilling assemblies 11 and a U-shaped fork plate 12 used as a mounting frame, wherein the U-shaped fork plate 12 mainly comprises a web 122 and wing plates 121 positioned on two sides of the web 122, and a steel support 123 is vertically welded in the middle of the web 122 based on the number of the cylindrical drilling assemblies 11. Each set of cylindrical drill assembly 11 is composed of two cylindrical drills, a motor 114 and a motor shaft 115, and in this embodiment, the number of cylindrical drills of the vertical drill device 1 is 4, and the cylindrical drills are distributed in a matrix to form rectangular cutting surfaces, and rectangular pile holes are formed in the downward cutting process. The cylindrical drill comprises a cylinder 111, a plurality of hob assemblies 113 distributed on the surface of the cylinder 111 at intervals, and a plurality of reamer assemblies 112 distributed between adjacent hob assemblies 113 on the surface of the cylinder 111 at intervals, a centrally arranged steel support 123 is welded or bolted with the shell of a motor 114, a motor rotating shaft 115 of the motor 114 drives the cylinders 111 on two sides to rotate, and the end parts of the motor rotating shaft 115 are supported in rotating shaft holes 124 of wing plates 121 on two sides. As shown in fig. 1-7, the height of the hob assembly 113 protruding above the cylinder 111 is higher than the reamer assembly 112, so that when cutting a rock mass, the hob 1132 on the hob assembly 113 first contacts the rock mass, i.e., the hob assembly 113 first breaks the rock face in its entirety into a plurality of large pieces of rock, and then further twists the large pieces of rock on the excavated face into small diameter rock pieces (or slag) by the reamer assembly 112; hob assembly 113 includes a hob base 1131 and a ring of hob 1132 secured to hob base 1131; the reamer assembly 112 includes a reamer base 1121 and a reamer 1122, and the reamer 1122 is in an inclined installation posture under the fixation of the reamer base 1121 to facilitate the reaming of a rock formation. For rock mass, if the hob 1132 is adopted to directly crush the rock mass of the excavated surface or the reamer 1122 is directly used for cutting, the strength, hardness and wear resistance of the hob and reamer materials are required to meet higher requirements, so that the development difficulty of the hob and reamer materials is increased, and the construction cost is increased. The hob 1132 and the reamer 1122 are combined, and the hob 1132 only fractures the rock mass of the excavated surface, so that the strength of the rock mass is reduced, the reamer 1122 is beneficial to cutting the rock mass more easily, the requirements on the strength, the hardness and the wear resistance of the hob and the reamer material can be correspondingly reduced, and the wear of the reamer and the hob can be reduced. Therefore, the method of combining the rock mass with the low strength after the hob 1132 is firstly used for fracturing the rock mass with the excavated face and then the reamer 1122 is used for cutting the rock mass with the low strength after the fracturing is adopted, so that the working efficiency can be improved, the cutter abrasion can be reduced, and the construction cost can be reduced. In addition, the web 122 is further provided with a vertical slag sucking branch pipe through hole 125 and a vertical grouting branch pipe through hole 126, which are respectively used for fixing the vertical slag sucking branch pipe 52 of the slag sucking system 5 and the vertical grouting branch pipe 83 of the grouting system 8.

As shown in fig. 1-13, the sliding horizontal drilling assembly 2 may be used to perform excavation of horizontal cantilever pile holes as well as excavation of haunched holes. The sliding horizontal drill assembly 2 comprises a horizontal drill device 21, a horizontal hydraulic cylinder 22 and a horizontal drill reaction frame 23, wherein the horizontal hydraulic cylinder 22 is fixed on the horizontal drill reaction frame 23 and drives the horizontal drill device 21 to move laterally.

The horizontal drilling device 21 also includes a plurality of cylindrical drilling assemblies 11 and a U-shaped fork plate 12 used as an installation frame, and the structures of the cylindrical drilling assemblies 11 and the U-shaped fork plate 12 of the horizontal drilling device 21 are identical to the structures of the cylindrical drilling assemblies 11 and the U-shaped fork plate 12 of the vertical drilling device 1, and only the setting directions are different (the horizontal drilling device 21 is vertically set, and the vertical drilling device 1 is horizontally set), so that details are not repeated herein. In this embodiment, the number of cylindrical drills of the sliding horizontal drill set 2 is also 4 and is distributed in a matrix to form rectangular cutting surfaces, which form rectangular horizontal cantilever pile holes during the lateral cutting thereof, and can also form haunched holes when the sliding horizontal drill set 2 is cut down and simultaneously to the lateral side. The horizontal drill reaction frame 23 includes a reaction plate 234, an upper side plate 232, a lower side plate 233, and a hydraulic side guard 231, the upper side plate 232 and the lower side plate 233 are respectively disposed at the upper and lower parts of the reaction plate 234, the hydraulic side guard 231 is respectively disposed at two sides of the reaction plate 234, the horizontal drill device 21 is disposed between the upper side plate 232 and the lower side plate 233, the horizontal hydraulic cylinder 22 is disposed in a space formed by the upper side plate 232, the lower side plate 233, the hydraulic side guard 231, and the reaction plate 234, and the hydraulic side guard 231 can prevent a rock body 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 counter-force plate 234, the piston rod of the horizontal hydraulic cylinder 22 is connected with the horizontal drilling device 21, vertical guide grooves 236 are formed in the upper side plate 232 and the lower side plate 233, the size and the shape of each vertical guide groove 236 are matched with those of each vertical guide plate 2311, each vertical guide groove 236 is used for installing each vertical guide plate 2311, each vertical guide plate 2311 penetrates through each vertical guide groove 236 in the upper side plate 232 and the lower side plate 233, two ends of each vertical guide plate 2311 are respectively connected with the stirring box 31 of the stirring device 3 and the vertical drilling device 1, when the sliding horizontal drilling assembly 2 and the vertical drilling device 1 are not fixed, the sliding horizontal drilling assembly 2 can move along the height direction of the vertical guide plates 2311, and meanwhile, each vertical guide plate 2311 can limit the horizontal position of the sliding horizontal drilling assembly 2 (the horizontal drilling counter-force frame 23) to prevent the sliding horizontal drilling assembly 2 (the horizontal drilling counter-force frame 23) from moving in the horizontal direction. The lower side plate 233 is circumferentially provided with a magnet base 238 along the bottom surface, screw holes 2310 are formed in the lower side plate 233 and the magnet base 238, the magnet base 238 is fixed on the lower side plate 233 through the cooperation of bolts 239 and the screw holes 2310, a circle of electromagnet 237 is arranged on the magnet base 238, the electromagnet 237 is magnetically attracted to the vertical drilling device 1 when being electrified, and the electromagnet 237 is electrified or powered off, so that the fixing or separation between the sliding horizontal drilling assembly 2 and the vertical drilling device 1 is realized, and different working conditions are met. In addition, the U-shaped fork plate 12 of the horizontal drilling device 21 is provided with a horizontal slag sucking branch pipe through hole 211 and a horizontal grouting branch pipe through hole 212, which are respectively used for fixing the horizontal slag sucking branch pipe 53 of the slag sucking system 5 and the horizontal grouting branch pipe 84 of the grouting system 8, the upper side plate 232 is provided with a slag sucking main pipe through hole 235 and a grouting main pipe through hole 236, which are respectively used for fixing the slag sucking main pipe 51 of the slag sucking system 5 and the grouting main pipe 81 of the grouting system 8, and the lower side plate 233 is provided with a vertical slag sucking branch pipe through hole 125 and a vertical grouting branch pipe through hole 126, which are respectively used for fixing the vertical slag sucking branch pipe 52 of the slag sucking system 5 and the vertical grouting branch pipe 83 of the grouting system 8.

As shown in fig. 1-17, the rock slag treatment mechanism comprises a stirring device 3, a crushing device 4, a slag suction system 5, a slag discharge system 7 and a grouting system 8.

The stirring device 3 mainly comprises a stirring box 31 and a stirring mechanism, wherein the stirring box 31 is fixedly arranged on the upper surface of a sliding horizontal drill component 2 (a vertical guide plate 2311), the stirring mechanism comprises a main gear 37 and a plurality of auxiliary gears 39 meshed with the main gear 37 for transmission, the main gear 37 is fixedly connected with the lower end of a drill rod 312, the rotating drill rod 312 can drive the main gear 37 to rotate so as to drive the auxiliary gears 39 to rotate, a stirring main rotating shaft 33 extending into the stirring box 31 is coaxially arranged on the main gear 37, stirring blades are arranged on the stirring main rotating shaft 33, and the stirring blades adopt double-layer large blades 32; each auxiliary gear 39 is coaxially provided with a stirring auxiliary rotating shaft 35 extending into the stirring box 31, the stirring auxiliary rotating shaft 35 is also provided with stirring blades, part of stirring blades on the stirring auxiliary rotating shaft 35 adopt double-layer small blades 34, and the other part of stirring blades on the stirring auxiliary rotating shaft 35 adopt single-layer small blades 36, so that evenly mixed slurry can be obtained by stirring the rock slag and slurry of the stirring box 31, and the discharge is facilitated. In order to avoid slurry in the stirring tank 31 from penetrating into the gear box where the main gear 37 and the auxiliary gear 39 are located during stirring, a main gear isolation pad 38 is provided at the junction of the stirring main rotating shaft 33 and the stirring tank 31, and an auxiliary gear isolation pad 310 is provided at the junction of the stirring auxiliary rotating shaft 35 and the stirring tank 31. As shown in fig. 3, a steel cover plate 311 is arranged on the top of the gear box where the main gear 37 and the auxiliary gear 39 are arranged, and is used for being connected with the pipe fixing frame 6. The stirring tank 31 is provided with a slag suction port and a slag discharge port.

The slag sucking system 5 is connected to the slag sucking port of the stirring tank 31, the slag sucking system 5 mainly comprises a slag sucking main pipe 51, a vertical slag sucking branch pipe 52 and a horizontal slag sucking branch pipe 53, one end of the slag sucking main pipe 51 is communicated with the slag sucking port of the stirring tank 31 through the crushing device 4, the other end (namely a sucking end) of the slag sucking main pipe 51 is connected with the vertical slag sucking branch pipe 52 and the horizontal slag sucking branch pipe 53, wherein the vertical slag sucking branch pipe 52 extends into the vertical drilling device 1, a suction head 55 of the vertical slag sucking branch pipe 52 is close to a cylindrical drilling component 11 of the vertical drilling device 1 so that slag can be sucked and cut out, and a vertical slag sucking valve 56 is arranged at the suction head 55 of the vertical slag sucking branch pipe 52 and used for controlling on-off of a pipeline; the horizontal slag sucking branch pipe 53 extends into the horizontal drilling device 21, the suction head 55 of the horizontal slag sucking branch pipe 53 is close to the cylindrical drilling assembly 11 of the horizontal drilling device 21 so that the horizontal slag sucking branch pipe 53 can suck and cut the slag which is cut and dug, and the suction head 55 of the horizontal slag sucking branch pipe 53 is provided with a horizontal slag sucking valve 57 for controlling the on-off of a pipeline. In addition, the pipe body of the vertical slag sucking branch pipe 52 and the pipe body of the horizontal slag sucking branch pipe 53 adopt telescopic pipes 54.

The pumped rock slag is crushed into fine particles by the crushing device 4 and then enters the stirring tank 31, the crushing device 4 mainly comprises a crushing tank 41, a middle partition plate 42, a connecting pipe 43, a rack 44, a fan motor 45, fan blades 46, a crushing knife 47 and a filter screen 48, the middle partition plate 42 is obliquely arranged in the crushing tank 41 to form a ramp which is beneficial to the flow of the rock slag, the fan motor 45 is arranged on a top plate in the crushing tank 41 through the rack 44, the fan blades 46 are arranged on a rotating shaft of the fan motor 45, the fan motor 45 and the fan blades 46 rotating at high speed can form negative pressure suction in a slag suction main pipe 51, a crushing knife 47 is arranged at the installation position of the fan motor 45, so that the pumped rock slag can enter the stirring tank 41 through the connecting pipe 43 after being crushed by the crushing knife 47, and a screen 48 is arranged at the end face of the fan motor 45 to filter the large-particle rock slag, and prevent the rock slag from flowing into the stirring tank 31 from the fan motor 45.

The grout outlet of the grouting system 8 extends into the vertical drilling device 1 and the sliding horizontal drilling assembly 2, and the grouting system 8 mainly comprises a grouting main pipe 81, a grouting pump 82, a vertical grouting branch pipe 83 and a horizontal grouting branch pipe 84, wherein one end of the grouting main pipe 81 is connected with the grouting pump 82 positioned on the ground, and the other end is connected with 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, a spray head 85 of the vertical grouting branch pipe 83 is close to a cylindrical drilling assembly 11 of the vertical drilling device 1, slurry is injected into a rock slag position through a grouting system 8, so that the rock slag is mixed with the slurry, extraction of the slag suction system 5 is facilitated, and a vertical grouting valve 86 is arranged at the spray head 85 of the vertical grouting branch pipe 83 and used for controlling on-off of a pipeline; the horizontal grouting branch pipe 84 extends into the horizontal drilling device 21, the spray head 85 of the horizontal grouting branch pipe 84 is close to the cylindrical drilling assembly 11 of the horizontal drilling device 21, slurry is injected into the rock slag through the grouting system 8, so that the rock slag is mixed with the slurry, the extraction of the slag suction system 5 is facilitated, and a horizontal grouting valve 87 is arranged at the spray head 85 of the horizontal grouting branch pipe 84 and used for controlling the on-off of a pipeline. In addition, the pipe bodies of the vertical grouting branch pipes 83 and the horizontal grouting branch pipes 84 are telescopic pipes.

As shown in fig. 1 to 17, the pipe fixing frame 6 has a box-shaped structure, and includes a top steel plate 61, a middle steel plate 62, a bottom steel plate 63, and a plurality of side vertical plates 64 connecting the three, in addition, circular through holes 65 are formed in the top steel plate 61, the middle steel plate 62, and the bottom steel plate 63 of the pipe fixing frame 6 for the drill pipe 312 to pass through, and in addition, slag pipe fixing holes 66 for the slag pipes 71 to pass through and grouting pipe fixing holes 67 for the grouting main pipe 81 to pass through are formed in the top steel plate 61, the middle steel plate 62, and the bottom steel plate 63. In order to avoid pipe wobble during drilling, the pipe holder 6 may provide a fixing for each pipe passing.

As shown in fig. 1 to 18, the present embodiment further has the following construction method:

(S1) in the rock stratum a, a vertical rectangular pile hole is drilled by using the vertical drilling device 1 on the drilling machine b to form a free section pile hole c until the design depth of a haunched hole d, in the process, the suction head 55 on the vertical slag suction branch pipe 52 and the spray head 85 on the vertical grouting branch pipe 83 near the cylindrical drilling assembly 11 of the vertical drilling device 1 are respectively used for sucking slag and grouting, the electromagnet 238 is in an electrified state, and the sliding horizontal drilling assembly 2 is fixed on the vertical drilling device 1.

(S2) after the sliding horizontal drilling assembly 2 reaches the top design elevation of the haunched hole d, starting the horizontal hydraulic cylinder 22 of the sliding horizontal drilling assembly 2, and extending the piston rod of the horizontal hydraulic cylinder 22 to the side of the rock body to drive the horizontal drilling device 21 to move laterally, drilling the rock body to form the haunched hole d, and drilling the pile hole f downwards by the vertical drilling device 1, wherein in the process, the suction head 55 on the vertical suction slag branch pipe 52 and the spray head 85 on the vertical grouting branch pipe 83 near the cylindrical drilling assembly 11 of the vertical drilling device 1 are respectively used for sucking and grouting, and the suction head 55 on the horizontal suction slag branch pipe 53 and the spray head 85 on the horizontal grouting branch pipe 84 near the cylindrical drilling assembly 11 of the horizontal drilling device 21 are respectively used for sucking and grouting.

(S3) after the sliding horizontal drilling assembly 2 reaches the bottom design elevation of the haunched hole d, the electromagnet 237 is powered off, the sliding horizontal drilling assembly 2 is separated from the vertical drilling device 1, the sliding horizontal drilling assembly 2 drills laterally to the design length of the horizontal cantilever pile hole e, and simultaneously the vertical drilling device 1 continues to drill downwards, in this process, the suction head 55 on the vertical suction slag branch pipe 52 and the spray head 85 on the vertical grouting branch pipe 83 near the cylindrical drilling assembly 11 of the vertical drilling device 1 perform suction slag and grouting respectively, and the suction head 55 on the horizontal suction slag branch pipe 53 and the spray head 85 on the horizontal grouting branch pipe 84 near the cylindrical drilling assembly 11 of the horizontal drilling device 21 perform suction slag and grouting respectively.

(S4) the piston rod of the horizontal hydraulic cylinder 22 is retracted to the minimum stroke, so that the horizontal drilling device 21 is retracted into the free section pile hole c, the sliding horizontal drilling assembly 2 moves downwards under the self weight of the horizontal drilling device 21, and when the sliding horizontal drilling assembly 2 contacts with the vertical drilling device 1, the electromagnet 237 is electrified, so that the vertical drilling device 1 and the sliding horizontal drilling assembly 2 are adsorbed together, the cylindrical drilling assembly 11 on the vertical drilling device 1 continues to drill downwards to the design depth of the embedded section pile hole f, and in the process, the suction head 55 on the vertical suction slag branch pipe 52 and the spray head 85 on the vertical grouting branch pipe 83 near the cylindrical drilling assembly 11 of the vertical drilling device 1 perform slag suction and grouting respectively.

The advantages of this embodiment are:

Although the foregoing embodiments have been described in some detail with reference to the accompanying drawings, it will be appreciated by those skilled in the art that various modifications and changes may be made thereto without departing from the scope of the invention as defined in the appended claims, and thus are not repeated herein.

Claims

1. The rectangular shallow hole drilling machine is characterized by comprising a drill carriage with a vertical drill rod, wherein a pipeline fixing frame, a rock slag processing mechanism, a sliding horizontal drilling assembly and a vertical drilling device are sequentially arranged at the lower end of the vertical drill rod from top to bottom; wherein:

2. The rectangular shallow hole drilling machine with the haunched horizontal cantilever, which is suitable for the rock stratum, is characterized in that the horizontal drilling reaction frame of the sliding horizontal drilling assembly comprises a reaction plate, an upper side plate, a lower side plate and a hydraulic side guard plate, wherein the upper side plate and the lower side plate are respectively arranged at the upper part and the lower part of the reaction plate, the hydraulic side guard plates are respectively arranged at two sides of the reaction plate, the horizontal drilling device is arranged between the upper side plate and the lower side plate, the horizontal hydraulic cylinder is arranged in a space formed by the upper side plate, the lower side plate, the hydraulic side guard plate and the reaction plate, the cylinder barrel end face of the horizontal hydraulic cylinder is fixed on the reaction plate, the piston rod of the horizontal hydraulic cylinder is connected with the horizontal drilling device, the upper side plate and the lower side plate are respectively provided with vertical guide grooves for installing vertical guide plates, and the vertical guide plates penetrate through the vertical guide plates on the upper side plate and the lower side plate and are respectively connected with the stirring box and the vertical drilling device.

3. The rectangular shallow hole drill machine with the haunched horizontal cantilever, which is adaptive to the rock stratum, is characterized in that the drill carriage comprises a vehicle-mounted platform, a steel upright post, a pull rod, a hinged shaft, a guide rail, a sliding block, a steel cantilever beam and a rotating motor, wherein the steel upright post is vertically arranged on the vehicle-mounted platform, the upper end of the pull rod is hinged with the upper end of the steel upright post, the lower end of the pull rod is hinged with the hinged shaft fixed on the vehicle-mounted platform, the guide rail is vertically arranged and fixed along the steel upright post, the sliding block is slidably assembled on the guide rail, the steel cantilever beam is fixed on the sliding block, and the rotating motor is fixed on the steel cantilever beam and drives the vertical drill rod to rotate.

4. The synchronous rectangular shallow hole drilling machine with the haunched horizontal cantilever, which is suitable for the rock stratum, according to the claim 1, is characterized in that the U-shaped fork plate of the vertical drilling device consists of a web plate, wing plates arranged on two sides of the bottom surface of the web plate and a steel support arranged in the middle of the bottom surface of the web plate; the cylindrical drilling assembly of the vertical drilling device comprises two cylinders, a motor for driving the cylinders to rotate, a plurality of hob assemblies arranged on the surfaces of the cylinders at intervals and a plurality of reamer assemblies arranged between the adjacent hob assemblies, wherein each hob assembly comprises a hob base and a circle of hob fixed on the hob base, each reamer assembly comprises a reamer base and a reamer obliquely fixed on the reamer base, a rotating shaft of the motor penetrates through the cylinders on two sides and the end parts of the rotating shaft are correspondingly arranged in rotating shaft holes of the wing plates on two sides of the U-shaped fork plate, and a shell of the motor is welded and fixed on the steel support.

5. The synchronous rectangular shallow hole drill with the haunched horizontal cantilever, which is suitable for the rock stratum, according to claim 1, is characterized in that the stirring mechanism comprises a main gear and a plurality of auxiliary gears meshed with the main gear for transmission, the lower end of the vertical drill rod drives the main gear to rotate, a stirring main rotating shaft extending into the stirring box is coaxially arranged on the main gear, and stirring blades are arranged on the stirring main rotating shaft; the auxiliary gear is coaxially provided with a stirring auxiliary rotating shaft extending into the stirring box, and the stirring auxiliary rotating shaft is provided with stirring blades.

6. The synchronous rectangular shallow hole drilling machine with the haunched horizontal cantilever, which is suitable for the rock stratum, is characterized in that the slag sucking system comprises a slag sucking main pipe, a vertical slag sucking branch pipe and a horizontal slag sucking branch pipe, wherein the vertical slag sucking branch pipe and the horizontal slag sucking branch pipe branch from a suction port of the slag sucking main pipe are branched, suction heads of the vertical slag sucking branch pipe are connected into the vertical drilling device, suction heads of the horizontal slag sucking branch pipe are connected into the sliding horizontal drilling assembly, slag sucking valves are arranged at the suction heads, and telescopic pipes are adopted for a pipe body of the vertical slag sucking branch pipe and a pipe body of the horizontal slag sucking branch pipe.

7. The synchronous rectangular shallow hole drill with the haunched horizontal cantilever, which is applicable to the rock stratum, according to claim 6, is characterized in that the slag discharging system comprises a slag discharging pipe and a slag discharging pump, one end of the slag discharging pump is connected with the slag discharging pipe, and the other end of the slag discharging pump is connected with the slag discharging port on the stirring box.

8. The synchronous rectangular shallow hole drill with the haunched horizontal cantilever, which is suitable for the rock stratum, according to claim 7, is characterized in that the pipeline fixing frame is sleeved on the outer side of the vertical drill rod, and the slag suction main pipe, the grouting main pipe and the slag discharge pipe are all arranged and fixed along the pipeline fixing frame.