CN116905966A - Step-by-step rectangular shallow hole drill with haunching horizontal cantilever and adapted to rock stratum - Google Patents

Abstract

The invention discloses a stepwise rectangular shallow hole drill with a haunching horizontal cantilever, which is suitable for a rock stratum, wherein the rectangular shallow hole drill comprises a drill carriage with a vertical drill rod, and the lower end of the vertical drill rod is sequentially connected with a rock slag processing mechanism, a multifunctional drill assembly and a vertical drill device from top to bottom; the rock slag treatment mechanism comprises a stirring device, a slag suction system, a crushing device, a grouting system and a slag discharge system; the grouting system is communicated into the multifunctional drill assembly and the vertical drill device; the multifunctional drill assembly comprises a multifunctional drill device, a rotary hydraulic cylinder, a crank hydraulic cylinder, a horizontal hydraulic cylinder and a multifunctional drill reaction frame; the vertical drilling device comprises a U-shaped fork plate and a plurality of cylindrical drilling assemblies which are arranged on the U-shaped fork plate and distributed in a matrix. The invention has the advantages that: 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

Step-by-step rectangular shallow hole drill with haunching horizontal cantilever and adapted to rock stratum

Technical Field

The invention relates to the field of anti-slide pile drilling equipment, in particular to a stepwise rectangular shallow hole drilling machine with a haunched 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 motor to drive four concave waist cylinders with reamer to cut soil body, and uses motor to drill rectangular pile hole.

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 hole with the horizontal cantilever structure cannot be drilled in the soil body, and the drilling in rock bodies (broken stone, pebble, soft rock, hard rock and other strata) cannot be realized; (2) 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 stepwise rectangular shallow hole drill with a haunched horizontal cantilever, which is suitable for a rock stratum, wherein a drill carriage with a vertical drill rod is adopted for driving a multifunctional drill assembly and a vertical drill device to perform stepwise construction on a rectangular shallow hole with the haunched horizontal cantilever, namely, the vertical drill device is used for excavating a vertical rectangular pile hole by adopting a cylindrical drill assembly distributed in a matrix form, then the vertical rectangular pile hole is excavated to the designed depth with the haunched horizontal cantilever, the operation of the vertical drill device is stopped, the multifunctional drill assembly is outwards rotated to form a haunched part, and then a horizontal hydraulic cylinder on the multifunctional drill assembly is used for driving the multifunctional drill device to horizontally outwards move to drill a horizontal cantilever structure in a shallow rock body, so that the horizontal cantilever pile hole with the haunched is formed; then retracting the multifunctional drilling device, rotating and resetting to a vertical state, and finally continuing to dig rectangular pile holes to a designed depth through the vertical drilling device; in addition, when the multifunctional drilling component and the vertical drilling device 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 with the haunched horizontal cantilever is suitable for a rock stratum and is characterized by comprising a drill carriage with a vertical drill rod, wherein the lower end of the vertical drill rod is sequentially connected with a rock slag processing mechanism, a multifunctional drill assembly and a vertical drill device from top to bottom; wherein:

the rock slag treatment mechanism comprises a stirring device, a slag suction system, a crushing device, a grouting system and a slag discharge system, wherein the stirring device comprises a stirring box and a stirring mechanism arranged on the stirring box; the slag sucking port arranged on the stirring box is communicated with the slag sucking system through the crushing device, and the slag discharging port arranged on the stirring box is connected with the slag discharging system; the grouting system is communicated into the multifunctional drill assembly and the vertical drill device;

the multifunctional drill component comprises a multifunctional drill device, a rotary hydraulic cylinder, a crank hydraulic cylinder, a horizontal hydraulic cylinder and a multifunctional drill reaction frame, wherein the multifunctional drill reaction frame is of a box-shaped structure with a lateral opening, an upper swinging plate at the lower end of the multifunctional drill device and a lower swinging plate on the bottom surface of the multifunctional drill reaction frame are in rotary connection through a connecting shaft, the rotary hydraulic cylinder is hinged with the middle part or the upper part of the multifunctional drill device, the crank hydraulic cylinder is hinged with the upper swinging plate through a crank shaft, and the crank shaft is positioned right below the connecting shaft; the lower swing plate is connected with the bottom surface of the multifunctional drill reaction frame in a sliding manner, and the horizontal hydraulic cylinder is connected with the lower swing plate and drives the lower swing plate to move in the horizontal direction;

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 distributed in a matrix, wherein the U-shaped fork plate consists of a web plate, wing plates arranged on two sides of the web plate and steel supports vertically welded on the web plate, the cylindrical drilling components comprise two cylinders, a motor for driving the cylinders to rotate, a plurality of hob components which are arranged on the surfaces of the cylinders at intervals and a plurality of reamer components which are arranged between the adjacent hob components, each hob component comprises a hob base and a circle of hob fixed on the hob base, and each reamer component comprises a reamer base and a reamer which is obliquely fixed on the reamer base; the motor is fixed on the steel support and drives the cylinder to rotate.

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 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 multifunctional slag sucking branch pipe, wherein the vertical slag sucking branch pipe and the multifunctional 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, and a suction head of the multifunctional slag sucking branch pipe is connected into the multifunctional drilling device; the suction heads are respectively provided with a slag sucking valve, and the pipe body of the multifunctional slag sucking branch pipe adopts a telescopic pipe.

The grouting system comprises a grouting main pipe and a grouting pump arranged on the grouting main pipe, wherein the lower port of the grouting main pipe is bifurcated into a vertical grouting branch pipe and a multifunctional grouting branch pipe, a spray head of the vertical grouting branch pipe extends into the vertical drilling device at a position close to the cylindrical drilling assembly, and a spray head of the multifunctional grouting branch pipe extends into the multifunctional drilling assembly at a position close to the multifunctional drilling device; and grouting valves are arranged at the positions of the spray heads, and the pipe bodies of the multifunctional grouting branch pipes adopt 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 stirring mechanism is characterized in that a pipeline fixing frame is arranged above the stirring mechanism and sleeved on the outer side of the vertical drill rod, and the slag suction main pipe, the grouting pipe and the slag discharge pipe are all fixedly arranged along the pipeline fixing frame.

The multifunctional drill counterforce frame comprises a multifunctional hydraulic counterforce plate, a multifunctional hydraulic upper side plate arranged at the upper end of the multifunctional hydraulic counterforce plate, a multifunctional hydraulic lower side plate arranged at the lower end of the multifunctional hydraulic counterforce plate and multifunctional hydraulic side guard plates arranged at two sides of the multifunctional hydraulic counterforce plate, and the multifunctional hydraulic lower side plate is fixed on the vertical drill device; the rear end of the cylinder barrel of the rotary hydraulic cylinder is hinged with the multifunctional hydraulic counter-force plate through a hinged support, the rear end of the cylinder barrel of the crank hydraulic cylinder is hinged with the multifunctional hydraulic counter-force plate through a hinged support, and the rear end of the cylinder barrel of the horizontal hydraulic cylinder is fixed on the multifunctional hydraulic counter-force plate; the upper swing plate is semicircular;

the multifunctional drilling device comprises a mounting frame and a plurality of multifunctional cylindrical drilling components positioned on the mounting frame, wherein the mounting frame is composed of a multifunctional drilling web plate and multifunctional drilling wing plates positioned on two sides of the multifunctional drilling web plate, and the multifunctional cylindrical drilling components are distributed along the vertical surface and the top surface of the mounting frame at intervals.

The sliding connection between the lower swing plate and the bottom surface of the multifunctional drill reaction frame means that: the multifunctional hydraulic lower side plate is provided with a T-shaped sliding groove, the lower swing plate is provided with a T-shaped sliding block, and the T-shaped sliding block on the lower swing plate is assembled in the T-shaped sliding groove of the multifunctional hydraulic lower side plate to form sliding connection.

The invention has the advantages that:

(1) The horizontal cantilever and rectangular pile hole with the haunched structure are drilled in the shallow rock body through a drill rod and a rotatable and horizontally sliding multifunctional cylindrical drill with a reamer and a hob which are distributed at intervals;

(2) 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;

(3) 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;

(4) 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 cross-sectional view of the G-G of FIG. 2 in accordance with the present invention;

FIG. 12 is a cross-sectional view H-H of FIG. 2 in accordance with the present invention;

FIG. 13 is a side view of the multi-function drill assembly of the present invention;

FIG. 14 is a cross-sectional view I-I of FIG. 13 in accordance with the present invention;

FIG. 15 is a J-J cross-sectional view of FIG. 2 in accordance with the present invention;

FIG. 16 is a cross-sectional view of K-K of FIG. 2 in accordance with the present invention;

FIG. 17 is a cross-sectional view of the L-L of FIG. 2 in accordance with the present invention;

FIG. 18 is a cross-sectional view of M-M of FIG. 2 in accordance with the present invention;

FIG. 19 is a schematic view of the construction steps of the step-by-step rectangular shallow hole drill with haunched horizontal cantilever adapted to a rock formation of the present invention;

as shown in fig. 1-19, the labels in the figures are respectively:

1. the vertical drilling device comprises a vertical drilling device, a multifunctional 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 multifunctional 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 vertical drilling machine comprises a cylindrical drilling assembly, wherein the cylindrical drilling assembly is formed by a U-shaped fork plate, 111, 112, a reamer assembly, 113, a hob assembly, 114, a motor, 115, a motor rotating shaft, 121, a vertical drilling wing plate, 122, a vertical drilling middle web plate, 123, a vertical drilling upper web plate, 124, a vertical drilling steel support, 125, a rotating shaft hole, 126, a vertical slag suction branch pipe through hole, 127, a vertical grouting branch pipe through hole, 128, a vertical slag suction main pipe through hole, 1121, a reamer base, 1122, 1131, a hob base and 1132, and a hob;

21. the hydraulic system comprises a multifunctional drilling device 22, a rotary hydraulic cylinder 23, a crank hydraulic cylinder 24, a horizontal hydraulic cylinder 25, a multifunctional drilling reaction frame 211, a multifunctional drilling U-shaped fork plate 2111, a multifunctional drilling wing plate 2112, a multifunctional drilling web plate 2113, a groove 2114, a multifunctional slag suction branch pipe through hole 2115, a multifunctional grouting branch pipe through hole 212, a U-shaped thick plate 2121, a rotary shaft hydraulic cylinder wing plate 2122, a rotary shaft hydraulic cylinder web plate 2123, a rotary shaft 213, a U-shaped connector 2131, a bottom plate 2132, an upper swing plate 2133, a connecting shaft hole 2134, a connecting shaft 2135, a crank shaft 251, a multifunctional hydraulic side guard plate 252, a multifunctional hydraulic lower side plate 253, a 254, a 255T-shaped chute, a 256, a lower swing plate 257T-shaped slide block 258 and a hinge seat.

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, racks, 45, fan motors, 46, fan blades, 47, crushing cutters and 48, screen cloth;

51. the slag sucking main pipe is 52, the vertical slag sucking branch pipe is 53, the multifunctional 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. a slag discharging main pipe 72. A slag discharging pump;

81. the grouting device comprises a grouting main pipe, 82, a grouting pump, 83, a vertical grouting branch pipe, 84, a multifunctional 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. 1-18, the present embodiment specifically relates to a stepped 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 multifunctional 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 processing mechanism, the multifunctional 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 processing mechanism comprises a stirring device 3, a crushing device 4, a slag sucking system 5, a slag discharging 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. 1-8, the vertical drilling device 1 is used for shallow hole drilling of rectangular anti-slide piles, and mainly comprises a plurality of cylindrical drilling assemblies 11 and vertical drilling U-shaped fork plates 12 used as mounting frames, wherein the vertical drilling U-shaped fork plates 12 mainly comprise a vertical drilling middle web 122, vertical drilling upper webs 123 and vertical drilling wing plates 121 positioned on two sides of the vertical drilling middle web 122, and a vertical drilling steel support 124 is vertically welded in the middle position of the vertical drilling middle 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, in this embodiment, the number of cylindrical drills is 4, and the cylindrical drills are distributed in a matrix form to form rectangular cutting surfaces, and rectangular pile holes are formed in the downward cutting process, wherein the matrix distribution refers to that the cylindrical drills are respectively arranged on two sides of the vertical drill steel support 124. 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, a centrally arranged vertical drill steel support 124 is welded or bolted with a 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 125 of two vertical drill wing plates 121 on two sides. As shown in fig. 5-8, 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, a vertical slag suction main pipe through hole 128 is formed in the vertical drilling upper web 123 and is used for fixing the slag suction main pipe 51; the vertical drilling center web 122 is also provided with a plurality of vertical slag sucking branch pipe through holes 126 and vertical grouting branch pipe through holes 127 for fixing the vertical slag sucking branch pipe 53 and the vertical grouting branch pipe 83 respectively.

As shown in fig. 1-3 and 9-14, the multifunction drill assembly 2 includes a multifunction drill device 21, a rotary hydraulic cylinder 22, a crank hydraulic cylinder 23, a horizontal hydraulic cylinder 24, and a multifunction drill reaction frame 25; the multifunctional drill reaction frame 25 includes a multifunctional hydraulic reaction plate 254, multifunctional hydraulic side guard plates 251 disposed on both sides of the multifunctional hydraulic reaction plate 254, a multifunctional hydraulic upper side plate 252 disposed on the top of the multifunctional hydraulic reaction plate 254, and a multifunctional hydraulic lower side plate 253 disposed on the bottom of the multifunctional hydraulic reaction plate 254, so that the multifunctional drill reaction frame 25 forms a box-type structure with lateral openings. The multifunctional drilling device 21 is arranged in a box of the multifunctional drilling reaction frame 25 and positioned at an opening part of the box, and comprises a plurality of multifunctional cylindrical drilling components and a mounting frame for mounting the multifunctional cylindrical drilling components, wherein the mounting frame specifically comprises a multifunctional drilling web 2112 and multifunctional drilling wing plates 2111 positioned at two sides of the multifunctional drilling web, and each multifunctional cylindrical drilling component is distributed at intervals on a vertical surface and a top surface of the mounting frame, so that the multifunctional cylindrical drilling components can drill a rock body in a lateral movement process in a rotation process and in a horizontal state. The multifunctional cylindrical drill assembly in the embodiment comprises a cylinder, a plurality of hob assemblies arranged on the surface of the cylinder at intervals and a plurality of reamer assemblies arranged between the adjacent hob assemblies, wherein the cylinder is fixed on a mounting frame through a multifunctional U-shaped fork plate 211 of the drill, the height of the hob assemblies protruding out of the cylinder is higher than that of the reamer assemblies, the hob assemblies comprise hob bases and a circle of hob fixed on the hob bases, the reamer assemblies comprise reamer bases and reamers, and the reamer realizes inclined mounting postures under the fixation of the reamer bases so as to facilitate the reaming of rock strata. The bottom of the mounting frame is provided with a U-shaped connector 213 for hinging with a lower swing plate 256 on the multifunctional hydraulic lower side plate 253. The U-shaped connector 213 includes a bottom plate 2131 and upper swing plates 2132 welded to both sides of the bottom plate 2131, wherein the bottom plate 2131 is fixedly connected to the bottom of the multifunctional drilling web 2112 and the bottom of the multifunctional drilling wing 2111, the upper swing plates 2132 are semi-arc-shaped and are hinged to the lower swing plates 256 via connecting shafts 2134, and the connecting shafts 2134 penetrate through the lower swing plates 256 and connecting shaft holes 2133 on the upper swing plates 2132.

As shown in fig. 1-3 and 9-14, one end of the rotary hydraulic cylinder 22 is hinged to the multifunctional hydraulic counter-force plate 254, the other end is hinged to the U-shaped thick plate 212 on the back surface of the multifunctional drilling web 2112, the U-shaped thick plate 212 is specifically composed of a rotary shaft hydraulic cylinder wing plate 2121 and a rotary shaft hydraulic cylinder web 2122, the front end of the rotary hydraulic cylinder 22 is hinged to the U-shaped thick plate 212 through a rotary shaft 2123, the U-shaped thick plate 212 is located in the middle or upper position of the multifunctional drilling web 2112, and a groove 2113 is formed in the back surface of the multifunctional drilling web 2112 to facilitate setting of the U-shaped thick plate 212. The crank cylinder 23 is hinged at one end to the multifunction hydraulic reaction plate 254 via a hinge bracket 258, and is hinged at the other end to the upper swing plate 256 via a crank shaft 2135, and the hinge bracket 258, which is hinged to the crank cylinder 23 on the multifunction hydraulic reaction plate 254, and the connecting shaft 2134 are positioned at the same horizontal position, and the crank shaft 2135 is positioned directly below the connecting shaft 2134. One end of the horizontal hydraulic cylinder 24 is connected to the multifunctional hydraulic counter-force plate 254, the other end is connected to the lower swing plate 256, in this embodiment, a T-shaped chute 255 is formed on the multifunctional hydraulic lower side plate 253, a T-shaped slide block 257 is connected to the bottom of the lower swing plate 256, and the T-shaped slide block 257 and the T-shaped chute 255 form a sliding fit after being assembled, when the horizontal hydraulic cylinder 24 pushes the lower swing plate 256, the T-shaped slide block 257 thereon can move horizontally along the T-shaped chute 255. As shown in fig. 19, the connecting shaft 2134 is taken as a rotation center, the rotary hydraulic cylinder 22 pushes the multifunctional drilling device 21 outwards to rotate around the connecting shaft 2134, and meanwhile the crank hydraulic cylinder 23 assists the multifunctional drilling device 21 to rotate around the connecting shaft 2134, so that the aim of forming a haunched pile hole by driving the multifunctional drilling device 21 outwards in a combined manner by the rotary hydraulic cylinder 22 and the crank hydraulic cylinder 23 is fulfilled; after that, when the multifunction drilling device 21 is rotated from the vertical state to the horizontal state, the lower swing plate 256 is pushed to the outside by the horizontal hydraulic cylinder 24, and the rotary hydraulic cylinder 22 and the crank hydraulic cylinder 23 are also extended simultaneously during the outside movement. The method has the advantages that: first, increasing the cutting force of the multifunctional drilling device 21 in the process of rotationally cutting the rock-soil body; and secondly to increase the stability of the multifunction drilling device 21 during the rotary cutting of the rock and soil.

In addition, through holes are formed in the multifunctional hydraulic counter-force plate 254, and a multifunctional slag suction branch pipe through hole 2114 and a multifunctional grouting branch pipe through hole 2115 are formed in the multifunctional drilling web 2112, the multifunctional slag suction branch pipe 53 which is branched off from the slag suction main pipe 51 in the slag suction system 5 extends the suction head 55 of the multifunctional drilling device 21 to suck the excavated sludge through the through holes in the multifunctional hydraulic counter-force plate 254 and the multifunctional slag suction branch pipe through hole 2114 in the multifunctional drilling web 2112, and the multifunctional slag suction branch pipe 53 adopts a telescopic pipe form in order to adapt to the rotation and horizontal extension action of the multifunctional drilling device 21; the multi-functional grouting branch pipe 84 branched from the grouting main pipe 81 in the grouting system 8 extends the nozzle 85 into the multi-functional drilling device 21 for grouting through the through hole on the multi-functional hydraulic counter-force plate 254 and the multi-functional grouting branch pipe through hole 2115 on the multi-functional drilling web 2112, and the multi-functional grouting branch pipe 84 adopts a telescopic pipe form in order to adapt to the rotation and horizontal extension actions of the multi-functional drilling device 21.

As shown in fig. 1-18, 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 comprises a stirring box 31 and a stirring mechanism, the stirring box 31 is fixedly arranged on the upper surface of the multifunctional drill reaction frame 25, the stirring mechanism comprises a main gear 37 and a plurality of auxiliary gears 39 meshed with the main gear 37 for transmission, wherein 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 further 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 sludge and the slurry of the stirring box 31, and the stirring box is beneficial to discharge. 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, a multifunctional slag sucking branch pipe 53 and a crushing device 4, 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 branched into the vertical slag sucking branch pipe 52 and the multifunctional slag sucking branch pipe 53, as shown in fig. 3, 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 so that the vertical slag sucking branch pipe can suck and cut out rock sludge, and a vertical slag sucking valve 56 is arranged at the suction head 55 and used for controlling on-off of a pipeline. The multifunctional slag sucking branch pipe 53 extends into the multifunctional drilling assembly 2, the suction head 55 of the multifunctional slag sucking branch pipe 53 is close to the multifunctional drilling device 21 so that the multifunctional slag sucking branch pipe can suck and cut the stirred out rock sludge, and the multifunctional slag sucking valve 57 is arranged at the suction head 55 and used for controlling on-off of a pipeline, wherein the pipeline of the multifunctional slag sucking branch pipe 53 is in the form of a telescopic pipe 54 so as to adapt to rotation and forward and backward movement of the multifunctional drilling device 21.

The pumped sludge 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, a fan blade 46, a crushing blade 47 and a 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 sludge, the fan motor 45 is arranged on a top plate in the crushing tank 41 through the rack 44, the fan blade 46 is arranged on a rotating shaft of the fan motor 45, the fan motor 45 and the fan blade 46 rotating at high speed can form negative pressure suction in the sludge suction main pipe 5, the crushing blade 47 is arranged at the installation position of the fan motor 45, so that the pumped sludge can enter the stirring tank 31 through the connecting pipe 43 after being crushed by the crushing blade 47, and the screen 48 is arranged at the end face of the fan motor 45 to filter the large-particle sludge, so that the sludge is prevented from flowing into the stirring tank 31 from the fan motor 45.

The grouting system 8 mainly comprises a grouting main pipe 81, a grouting pump 82, a vertical grouting branch pipe 83 and a multifunctional grouting branch pipe 84, since the rectangular shallow hole drill in the embodiment is applied to a rock stratum, the cut rock slag is the rock slag, and the granular pure solid is difficult to be pumped and transported, the main function of the grouting system 8 is to pump the supplemented slurry to the cutting part, so that the rock slag and the slurry are mixed for convenient pumping, and the grouting pump 82 is responsible for pumping operation. The grouting main pipe 81 extends into the multifunctional drilling assembly 2 and the vertical drilling device 1 from the ground, the lower port of the grouting main pipe is bifurcated into a multifunctional grouting branch pipe 84 and a vertical grouting branch pipe 83, the multifunctional grouting main pipe extends into the multifunctional drilling assembly 2 and the vertical drilling device 1 to pump slurry, the injection end of the multifunctional grouting branch pipe 84 is provided with a spray head 85, the spray head 85 is provided with a multifunctional grouting valve 87, and the injection end of the vertical grouting branch pipe 83 is provided with a spray head 85, and the spray head 85 is provided with a vertical grouting valve 86; in the drilling process, the on-off of the multifunctional grouting valve 87 and the vertical grouting valve 86 are determined according to whether the rectangular shallow hole drilling machine is used for downwards excavating rectangular drilling holes or laterally excavating horizontal cantilever pile holes or excavating haunched holes.

The slag discharging port of the stirring box 31 is connected with a slag discharging system 7 from the ground, the slag discharging system 7 comprises a slag discharging pipe 71 and a slag discharging pump 72, the lower end of the slag discharging pipe 71 is communicated with the slag discharging port of the stirring box 31, and the port of the slag discharging pipe is extended downwards to a certain depth so as to facilitate pumping more slurry, and the slag discharging pipe 71 pumps the uniformly stirred slurry from the stirring box 31 to the ground through the slag discharging pump 72 for collection.

As shown in fig. 1 to 3 and 18, the pipe fixing frame 6 has a box structure including 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 discharging main pipe 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. 19, the construction method of the rectangular shallow hole drilling machine in the embodiment for step-by-step drilling rectangular anti-slide pile holes with haunched horizontal cantilevers in a rock stratum comprises the following steps:

(S1) in a rock stratum a, drilling a vertical rectangular pile hole by using a vertical drilling device 1 on a drilling machine b to form a free section pile hole c until the design depth of a horizontal cantilever pile hole e; in this process, the suction head 55 of the vertical suction slag branch pipe 52 continues to suck slag, the nozzle 85 of the vertical grouting branch pipe 83 continues to grouting, the suction head 55 of the multifunctional suction slag branch pipe 53 is closed, and the nozzle 85 of the multifunctional grouting branch pipe 84 is closed.

(S2) stopping the drilling work of the vertical drilling device 1 after the designed elevation of the horizontal cantilever pile hole e is reached; starting the multifunctional drilling assembly 2, and gradually rotating the multifunctional drilling device 21 outwards by taking the connecting shaft 2134 as a rotating shaft and simultaneously stirring and cutting the rock mass under the drive of the rotary hydraulic cylinder 22 and the crank hydraulic cylinder 23 until the multifunctional drilling device 21 rotates from a vertical state to a horizontal state, and performing accumulated rotation for 90 degrees to form a haunching hole d; in this process, the suction head 55 of the multifunctional suction slag branch pipe 53 continues to suck slag, the nozzle 85 of the multifunctional grouting branch pipe 84 continues to grouting, while the suction head 55 of the vertical suction slag branch pipe 52 is closed, and the nozzle 85 of the vertical grouting branch pipe 83 is closed.

After (S3), the horizontal hydraulic cylinder 24 is turned on and the lower swing plate 256 is driven to move laterally outwards, and the multifunctional drilling device 21 drills horizontally outwards to form a horizontal cantilever pile hole e; during this process, the rotary cylinder 22 and the crank cylinder 23 are also extended simultaneously; the suction head 55 of the multifunctional suction slag branch pipe 53 continuously sucks slag, the spray head 85 of the multifunctional grouting branch pipe 84 continuously performs grouting, the suction head 55 of the vertical suction slag branch pipe 52 is closed, and the spray head 85 of the vertical grouting branch pipe 83 is closed.

(S4) after the construction of the haunched hole d and the horizontal cantilever pile hole e is completed, the horizontal hydraulic cylinder 24 drives the multifunctional drilling device 21 to shrink inwards to the minimum stroke, and the rotary hydraulic cylinder 22 and the crank hydraulic cylinder 23 drive the multifunctional drilling device 21 to rotate and reset to the vertical state; and then the vertical drilling device 1 is used for continuously drilling to the designed depth to form a pile hole f of the embedded section, in the process, the suction head 55 of the vertical slag suction branch pipe 52 continuously sucks slag, the spray head 85 of the vertical grouting branch pipe 83 continuously performs grouting, the suction head 55 of the multifunctional slag suction branch pipe 53 is closed, and the spray head 85 of the multifunctional grouting branch pipe 84 is closed.

The beneficial effects of this embodiment lie in:

(1) The horizontal cantilever and rectangular pile hole with the haunched structure are drilled in the shallow rock body through a drill rod and a rotatable and horizontally sliding multifunctional cylindrical drill with a reamer and a hob which are distributed at intervals;

(2) 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;

(3) 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;

(4) 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.

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 (9)

1. The rectangular shallow hole drilling machine with the haunched horizontal cantilever is suitable for a rock stratum and is characterized by comprising a drill carriage with a vertical drill rod, wherein the lower end of the vertical drill rod is sequentially connected with a rock slag processing mechanism, a multifunctional drill assembly and a vertical drill device from top to bottom; wherein:

the rock slag treatment mechanism comprises a stirring device, a slag suction system, a crushing device, a grouting system and a slag discharge system, wherein the stirring device comprises a stirring box and a stirring mechanism arranged on the stirring box; the slag sucking port arranged on the stirring box is communicated with the slag sucking system through the crushing device, and the slag discharging port arranged on the stirring box is connected with the slag discharging system; the grouting system is communicated into the multifunctional drill assembly and the vertical drill device;

the multifunctional drill component comprises a multifunctional drill device, a rotary hydraulic cylinder, a crank hydraulic cylinder, a horizontal hydraulic cylinder and a multifunctional drill reaction frame, wherein the multifunctional drill reaction frame is of a box-shaped structure with a lateral opening, an upper swinging plate at the lower end of the multifunctional drill device and a lower swinging plate on the bottom surface of the multifunctional drill reaction frame are in rotary connection through a connecting shaft, the rotary hydraulic cylinder is hinged with the middle part or the upper part of the multifunctional drill device, the crank hydraulic cylinder is hinged with the upper swinging plate through a crank shaft, and the crank shaft is positioned right below the connecting shaft; the lower swing plate is connected with the bottom surface of the multifunctional drill reaction frame in a sliding manner, and the horizontal hydraulic cylinder is connected with the lower swing plate and drives the lower swing plate to move in the horizontal direction;

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 distributed in a matrix, wherein the U-shaped fork plate consists of a web plate, wing plates arranged on two sides of the web plate and steel supports vertically welded on the web plate, the cylindrical drilling components comprise two cylinders, a motor for driving the cylinders to rotate, a plurality of hob components which are arranged on the surfaces of the cylinders at intervals and a plurality of reamer components which are arranged between the adjacent hob components, each hob component comprises a hob base and a circle of hob fixed on the hob base, and each reamer component comprises a reamer base and a reamer which is obliquely fixed on the reamer base; the motor is fixed on the steel support and drives the cylinder to rotate.

2. The stepwise rectangular shallow hole drill with a haunched horizontal cantilever, which is suitable for a rock stratum, according to claim 1, and 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.

3. The rectangular shallow hole drill machine with the haunched horizontal cantilever, which is adaptive to the rock stratum, is characterized in that 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 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.

4. The stepwise rectangular shallow hole drilling machine with a haunched horizontal cantilever, which is suitable for a rock stratum, according to claim 1, and is characterized in that the slag sucking system comprises a slag sucking main pipe, a vertical slag sucking branch pipe and a multifunctional slag sucking branch pipe, wherein the vertical slag sucking branch pipe and the multifunctional 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, and a suction head of the multifunctional slag sucking branch pipe is connected into the multifunctional drilling device; the suction heads are respectively provided with a slag sucking valve, and the pipe body of the multifunctional slag sucking branch pipe adopts a telescopic pipe.

5. The stepwise rectangular shallow hole drill with a haunched horizontal cantilever, which is suitable for a rock stratum, according to claim 4, characterized in that the grouting system comprises a grouting main pipe and a grouting pump arranged on the grouting main pipe, wherein the lower port of the grouting main pipe is branched into a vertical grouting branch pipe and a multifunctional grouting branch pipe, a spray head of the vertical grouting branch pipe extends into the vertical drilling device at a position close to the cylindrical drilling assembly, and a spray head of the multifunctional grouting branch pipe extends into the multifunctional drilling assembly at a position close to the multifunctional drilling device; and grouting valves are arranged at the positions of the spray heads, and the pipe bodies of the multifunctional grouting branch pipes adopt telescopic pipes.

6. The stepwise rectangular shallow hole drill with a haunched horizontal cantilever, which is suitable for a rock stratum, according to claim 5, 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.

7. The stepwise rectangular shallow hole drill with a haunched horizontal cantilever, which is suitable for the rock stratum, according to claim 6, and is characterized in that a pipeline fixing frame is arranged above the stirring mechanism and sleeved on the outer side of the vertical drill rod, and the slag suction main pipe, the grouting pipe and the slag discharging pipe are all arranged and fixed along the pipeline fixing frame.

8. The stepwise rectangular shallow hole drilling machine with the haunched horizontal cantilever, which is suitable for the rock stratum, according to claim 1, and is characterized in that the multifunctional drilling reaction frame comprises a multifunctional hydraulic reaction plate, a multifunctional hydraulic upper side plate arranged at the upper end of the multifunctional hydraulic reaction plate, a multifunctional hydraulic lower side plate arranged at the lower end of the multifunctional hydraulic reaction plate and multifunctional hydraulic side guard plates arranged at two sides of the multifunctional hydraulic reaction plate, and the multifunctional hydraulic lower side plate is fixed on the vertical drilling device; the rear end of the cylinder barrel of the rotary hydraulic cylinder is hinged with the multifunctional hydraulic counter-force plate through a hinged support, the rear end of the cylinder barrel of the crank hydraulic cylinder is hinged with the multifunctional hydraulic counter-force plate through a hinged support, and the rear end of the cylinder barrel of the horizontal hydraulic cylinder is fixed on the multifunctional hydraulic counter-force plate; the upper swing plate is semicircular;

the multifunctional drilling device comprises a mounting frame and a plurality of multifunctional cylindrical drilling components positioned on the mounting frame, wherein the mounting frame is composed of a multifunctional drilling web plate and multifunctional drilling wing plates positioned on two sides of the multifunctional drilling web plate, and the multifunctional cylindrical drilling components are distributed along the vertical surface and the top surface of the mounting frame at intervals.

9. The stepwise rectangular shallow hole drill with haunched horizontal cantilever for adapting to rock strata according to claim 8, characterized in that the sliding connection between the lower swing plate and the bottom surface of the multifunctional drill reaction frame means: the multifunctional hydraulic lower side plate is provided with a T-shaped sliding groove, the lower swing plate is provided with a T-shaped sliding block, and the T-shaped sliding block on the lower swing plate is assembled in the T-shaped sliding groove of the multifunctional hydraulic lower side plate to form sliding connection.