A rectangular anti-sliding pile hole-forming device for hard rock

Abstract

The present invention relates to the technical field of engineering construction, and particularly to a device for forming holes in rectangular anti-slide piles in hard rock. Through a transmission device arranged in a staggered manner in terms of height, adjacent drill bits will not interfere with each other during eccentric rotation. Through the transmission device arranged in a staggered manner in terms of height, adjacent drill bits have overlapping drilling areas without interfering with each other, and can effectively handle the under-excavation between adjacent drill bits. Under-excavation means that there are areas where the excavation is insufficient when adjacent drill bits drill and excavate hard rock. The Reuleaux drill bit adopts a special-shaped structure design, with the edge part hollowed out, and at the same time, the heights of the bases of adjacent drill bits are also different. By cooperating with the transmission device arranged in a staggered manner in terms of height, it is ensured that the cutters and cutter seats will not interfere with the drill bit matrix when the adjacent drill bits rotate. The rotation directions of the Reuleaux drill bits at the bottoms of adjacent transmission devices are opposite, so that the cutting forces generated by the adjacent Reuleaux drill bits during drilling can cancel each other out, thereby reducing the shaking of the entire hole-forming device during drilling.

Description

Technical Field

[0001] The invention relates to the technical field of engineering construction, and in particular to a hard rock rectangular anti-sliding pile hole-making device. Background Art

[0002] During the construction of highways, railways, and tunnels, in order to prevent landslides on the hillsides on both sides, anti-slip pile construction must be carried out to ensure the stability of the mountains on both sides. Currently, rectangular anti-slip piles are the most widely used. At present, the construction mode of rectangular anti-slip piles is basically to drill holes first and then repair the holes. The existing hole repair devices are basically homemade simple equipment, which can only be barely applied to geological conditions of soil layers or soft rocks. When encountering hard rocks, the mode of manual digging is still adopted. In order to solve this problem, it is necessary to provide a mechanical hole-making device for hard rock rectangular anti-slip piles to meet the requirements of hard rock pile hole repair, and at the same time better control over-excavation and under-excavation to meet the requirements of construction safety, construction period and construction cost.

[0003] At present, there are some rectangular anti-slip pile drilling devices on the market, but most of them have simple structures. The driving method mainly relies on the power of the rotary drilling rod, and the shaping method adopted is similar to the milling wheel or rock drilling impact. It is only applicable to soil layers or soft rocks with a hardness of about 10MPa. It is completely unsuitable for hard rocks with a hardness of more than 50MPa, and it is not good for over-excavation and under-excavation.

[0004] For example, in the one-time square pile rotary drilling device disclosed in patent application CN 111535740 A, the drill rod rotates relative to the earth-taking bucket, and the drill rod drives the Lello triangular plate to rotate in the earth-taking bucket through the transmission shaft. The Lello triangular plate is linked to the rotary drilling drill bit through the toothed cutter shaft to rotate and excavate to form rounded square piles, and the earth-taking bucket cuts into the soil to form right-angled square piles. The hole can be quickly drilled in one time, the process is simple, the construction is convenient, safe and efficient, and the construction cost is low.

[0005] In order to achieve the above purpose, the technical solution adopted is: a one-time hole-forming square pile rotary drilling device, including a drill rod, and also including:

[0006] The earth-taking bucket is a barrel body with an open bottom and a closed top, one end of the drill rod penetrates the top wall of the earth-taking bucket and extends into the barrel, the drill rod is rotatably connected to the earth-taking bucket, and the outer wall and the inner wall of the bottom of the earth-taking bucket form an inclined upward cut wall;

[0007] The transmission shaft is located inside the earth excavation bucket, and one end of the transmission shaft is connected to the drill pipe; Reuleaux triangle plate, the Reuleaux triangle plate is located below the transmission shaft and inside the earth excavation bucket, the upper surface of the Reuleaux triangle plate is connected to the other end of the transmission shaft, the central axis of the Reuleaux triangle plate is eccentrically connected to the central axis of the drill pipe through the transmission shaft, and the drill pipe makes the end angles of the Reuleaux triangle plate fit and rotate along the rounded square track on the inner wall of the earth excavation bucket through the eccentricity of the transmission shaft; Tooth cutter shaft, the tooth cutter shaft is located inside the earth excavation bucket, one end of the tooth cutter shaft is fixed on the lower surface of the Reuleaux triangle plate, the other end of the tooth cutter shaft extends out of the earth excavation bucket, and the end angles of the tooth cutter shaft correspond to the end angles of the Reuleaux triangle plate; Rotary drilling bit, the rotary drilling bit is arranged on the free end of the tooth cutter shaft, the end angles of the rotary drilling bit correspond to the end angles of the tooth cutter shaft, and cutting blades are arranged on the lower surface of the rotary drilling bit, and the cutting blades are distributed from the center to the axis lines of the three end angles. Preferably, the transmission shaft includes a first shaft rod, a second shaft rod and a third shaft rod connected in sequence from top to bottom. One end of the first shaft rod is fixed on the drill pipe, the other end of the first shaft rod extends vertically downward, the second shaft rod is fixed on the first shaft rod and extends obliquely downward, and one end of the third shaft rod is fixed on the second shaft rod and extends vertically downward,

[0008] The other end of the third shaft rod is fixed on the upper surface of the Reuleaux triangle plate and is located on the central axis of the Reuleaux triangle plate. A disc is also sleeved on the third shaft rod, the disc is tangent to the inner wall of the earth excavation bucket, triangular covers are arranged at the four end angles of the inner wall of the earth excavation bucket, the triangular covers are located above the disc, and the disc and the triangular covers form a sliding seal. The transmission shaft includes a fourth shaft rod and a shaft sleeve. One end of the fourth shaft rod is fixed on the upper surface of the Reuleaux triangle plate and is located on the central axis of the Reuleaux triangle plate. The other end of the fourth shaft rod extends vertically upward through the shaft sleeve and is connected to the drill pipe. A disc is also sleeved on the fourth shaft rod, the disc is tangent to the inner wall of the earth excavation bucket, triangular covers are arranged at the four end angles of the inner wall of the earth excavation bucket, the triangular covers are located above the disc, and the disc and the triangular covers form a sliding seal. A through hole is arranged on the top wall of the earth excavation bucket, a rolling bearing is arranged in the through hole, the drill pipe passes through the rolling bearing and extends into the bucket, and the drill pipe is rotatably connected to the rolling bearing. The length of the tooth cutter shaft extending out of the earth excavation bucket is 10 - 20 cm. The connection between the rotary drilling bit and the tooth cutter shaft is detachable. The connection between the rotary drilling bit and the tooth cutter shaft is a snap connection or a threaded connection. This invention is only applicable to soil working conditions, and the process is quite complex, and it is difficult to apply to rectangular pile holes with large cross-sections.

[0009] A rotary dug square pile drill disclosed in patent application CN 113323577 A includes a central shaft assembly, a counterweight device, a barrel body, and a tooth plate assembly. The counterweight device and the barrel body are sleeved on the central shaft assembly, and the tooth plate assembly is installed around the barrel body. The central shaft assembly includes a square head and a central tube. The square head is located at the upper end of the central tube. The counterweight device includes a counterweight block and an upper slider mounting plate. The barrel body includes a panel, side plates, and vertical plates. The key technology is to sleeve a total pressure plate between the square head above the central tube and the counterweight device, install a spring between the total pressure plate and the counterweight block, distribute limiting plates on the lower end face of the total pressure plate and the upper end face of the counterweight block, install connecting rods between the limiting plates, set an upper support plate on the lower end face of the counterweight block, set an upper slider group on the lower end face of the upper support plate, install side plates and vertical plates below the panel of the barrel body to form a box body, distribute lower support plates on the upper end face of the panel, set a lower slider group on the upper end face of the lower support plates, set a guide cylinder and an installation bucket in the middle of the panel, and set sleeves at the lower ends of the side plates and vertical plates. The tooth plate assembly includes a tooth plate shaft, tooth plates, and drilling teeth. The tooth plate shaft is located in the open sleeve, tooth plates are installed on the tooth plate shaft, and drilling teeth are evenly distributed on the tooth plates. The square head is strengthened by a square head connecting plate, and square head rib plates are arranged in the diagonal directions of the square head. The lower end of the central tube is inserted into the guide cylinder of the barrel body, and a limiting ring is sleeved on the outer wall of the central tube at the lower end of the guide cylinder, and the limiting ring is fixed in cooperation with the lower end of the central tube. A convex circular friction block is installed at the lower end of the central tube, and a concave circular groove is provided at the bottom of the installation bucket. An oil groove is provided at the bottom of the installation bucket. A spring pressure plate is installed at the upper end of the spring, and a pressure screw is installed on the total pressure plate. A wear-resistant plate mounting disc is sleeved in the middle of the central tube, and wear-resistant plates are installed below the wear-resistant plate mounting disc. Limiting strips are provided on the surface of the tooth plates. Angle tooth plates are arranged in the diagonal directions at the lower ends of the side plates and vertical plates. Longitudinal rib plates and transverse rib plates are distributed in the barrel body. This invention can achieve a certain effect on the shaping of some soft rock pile holes by means of impact, but the construction time is long, and the long-term impact is likely to cause the stability of the pile hole to deteriorate. It is not applicable to the form of impact on hard rock and cannot achieve the effect of rock breaking and shaping.

[0010] A square pile rotary drilling device for realizing square hole formation, as disclosed in the patent document CN 209457865 U, includes a first rotating member and a plurality of second rotating members that rotate with the first rotating member. The axes of rotation of the first rotating member and the second rotating members are parallel to each other. The first rotating member drives the main drill bit to rotate, and each second rotating member drives a secondary drill bit to rotate. All the secondary drill bits are located above the main drill bit; the projection of the secondary drill bit in the rotation plane of the main drill bit partially coincides with the main drill bit; it also includes a square scraping member located above the secondary drill bit. Aiming at the problem that the rotary drilling machine in the prior art cannot directly form a square hole, resulting in low construction efficiency and insecurity of square piles, a square pile rotary drilling device for realizing square hole formation is proposed. The first rotating member drives a plurality of second rotating members to rotate simultaneously. The first rotating member drives the main drill bit to rotate, and each second rotating member drives a secondary drill bit to rotate. Since all the secondary drill bits are located above the main drill bit, during the drilling construction, it is inevitable that the main drill bit first contacts the soil layer to form a corresponding main hole, and then the secondary drill bits gradually contact the soil layer as they continue to descend. Since the projection of the secondary drill bit in the rotation plane of the main drill bit partially coincides with the main drill bit, several secondary drill bits will inevitably expand the main hole formed by the main drill bit from the outside, expanding its edge into several arc-shaped structures. As the depth of the main hole continues to increase, the square scraping member above the secondary drill bit also contacts the soil layer. The square scraping member moves directly downward without rotating, and its outer wall scrapes and corrects the arc-shaped outer side of the pre-formed through hole, scraping the excess soil downward to form a complete square structure. The utility model has a simple structure and can realize square hole formation through a rotary drilling machine, solving the problem that cast-in-place square piles in the current civil engineering field can only be formed manually, achieving the purpose of rapid hole formation and shortening the construction period. It can realize rapid construction under working conditions such as anti-slide piles set on high-risk slopes of roadbeds, pile foundations of building engineering, and pile foundations of bridge abutments, greatly shortening the engineering construction period, reducing costs, reducing the labor intensity of workers, and avoiding the operation risks of manual excavation of square holes. The first rotating member and the second rotating members are both located above the square scraping member. Ensure that the main drill bit, the secondary drill bits, and the square scraping member are arranged in sequence from bottom to top to form a drill bit assembly that contacts the soil layer in sequence, so that the square hole is gradually formed, and avoid interference from the first rotating member and the second rotating members during the formation process of the square hole. The first rotating member is a main gear, and the second rotating members are secondary gears meshing with the main gear. The main gear and the secondary gears are both connected to the corresponding main drill bit and secondary drill bits through connecting rods passing through the square scraping member, and the square scraping member does not rotate with the connecting rods. The stable transmission between the first rotating member and the second rotating members can be ensured by the gear meshing method. The connecting rods pass through the square scraping member and rotate with the first rotating member and the second rotating members to drive the corresponding main drill bit and secondary drill bits. Among them, the square scraping member does not rotate with the connecting rods, that is, the square scraping member does not rotate circumferentially and only moves up and down as a whole with the rotary drilling device. Through holes for the connecting rods to pass through are provided on the square scraping member, and bearings are sleeved on the connecting rods, and the bearings are fixed on the inner walls of the through holes.The stable rotation of the connecting rod is ensured through the setting of bearings, and at the same time, the effect that the square scraping part does not rotate is achieved. Specifically, the connecting rod is connected to the inner ring of the bearing, and the square scraping part is connected to the outer ring of the bearing. There are four auxiliary drills in total. The centers of the four auxiliary drills are coplanar, and the centers of the four auxiliary drills are the four vertices of a rectangle. That is, the height distances of the four auxiliary drills relative to the main drill are exactly equal. When the main drill drills a hole vertically downward, the four auxiliary drills can simultaneously contact the horizontal soil layer and start working at the same time. The centers of the four auxiliary drills are the four vertices of a rectangle, which can make the holes formed by the four auxiliary drills be distributed in a square shape, so as to provide an approximately square preformed hole for the square scraping part, thereby greatly reducing the thickness of the soil body that needs to be scraped by the square scraping part, reducing the working load of the square scraping part, and improving the service life of the device. The projection of the center of the main drill on the plane where the centers of the four auxiliary drills are located coincides with the center of the rectangle formed by the centers of the four auxiliary drills. That is, the approximately square preformed hole formed by the four auxiliary drills is arranged in a square shape on the outside compared with the center of the main drill, so that each auxiliary drill only needs to drill through a local soil body and communicate with the drill hole of the main drill, avoiding problems such as uneven load between the auxiliary drills and different reaction forces exerted by the soil layer on the auxiliary drills in different directions, which may cause the drilling direction to tilt automatically, so that the device can prevent the hole from tilting and reduce the risk of the wellbore skewing. When the drilling direction is vertical, the projections of the main drill and the auxiliary drills in the horizontal plane are all within the projection range of the square scraping part. It can ensure that after the square scraping part is finally scraped, the formed hole is completely square without any redundant part, avoiding the waste of cement slurry during subsequent pouring. The projection of the square scraping part in the horizontal plane is also square, and the projection of any one auxiliary drill in the horizontal plane is tangent to the adjacent two sides of the square projection of the square scraping part at the same time. It can make the soil body that needs to be scraped by the square scraping part belong to the redundant part between the holes formed by two adjacent auxiliary drills. This part of the soil body is located at the corner position and has been loosened by the main drill and the auxiliary drills, belonging to the part that is easy to be scraped off. The load of the square scraping part is low, and the forming efficiency of the square hole is extremely high. However, this invention can only be applied to the geological conditions of soil layers, and there are a lot of under-excavation after the pile hole is formed, and the size of the steel reinforcement cage cannot meet the requirements of anti-slide pile construction.

[0011] Therefore, according to this market situation, it is necessary to specifically study a hard rock rectangular anti-slide pile hole-forming device suitable for hard rock and capable of well controlling over-excavation and under-excavation. Summary of the Invention

[0012] (I) Technical Problems to be Solved

[0013] In view of the above-mentioned disadvantages and deficiencies of the prior art, the present invention provides a hard rock rectangular anti-sliding pile hole-forming device, which can change the current situation that there is no professional mechanized equipment for forming hard rock rectangular pile holes, and solves the technical problem that the existing rectangular anti-sliding pile hole-forming device is prone to over-excavation and under-excavation.

[0014] (II) Technical Solution

[0015] In order to achieve the above object, the main technical solutions adopted by the present invention include:

[0016] A hard rock rectangular anti-sliding pile hole-forming device, the hard rock rectangular anti-sliding pile hole-forming device includes:

[0017] A base for connecting superior equipment;

[0018] A support device, including a plurality of support boots, the support boots are telescopically arranged on the base;

[0019] A plurality of transmission devices, with Reuleaux bits provided at the bottom of each transmission device; the plurality of transmission devices are arranged vertically and staggeredly around the base so that the Reuleaux bits do not interfere with each other during eccentric rotation; the adjacent Reuleaux bits rotate in opposite directions;

[0020] An electric control cabinet system, which is fixed on the base.

[0021] The transmission devices are arranged in a rectangular array around the base, and the transmission devices include: 2 first transmission devices, a plurality of second transmission devices, a plurality of third transmission devices, and 2 fourth transmission devices;

[0022] The first transmission devices are located at two opposite corners of the rectangular array, and the fourth transmission devices are located at the other two opposite corners of the rectangular array; the second transmission devices and the third transmission devices are arranged at intervals along the four sides of the rectangular array;

[0023] The second transmission devices and the fourth transmission devices are arranged at a height higher than that of the first transmission devices and the third transmission devices in the vertical direction, so that the adjacent transmission devices are arranged vertically and staggeredly around the base.

[0024] The first transmission device, the second transmission device, the third transmission device, and the fourth transmission device all include: a motor, a reducer, a support frame, and a universal shaft;

[0025] The universal shaft is arranged inside the support frame, the Reuleaux bit is connected to the bottom of the universal shaft, and the universal shaft is connected to the reducer;

[0026] A flange connection seat is provided at the top of the support frame, the reducer is fixed to the top of the support frame through the flange connection seat, and the motor is connected to the top of the reducer;

[0027] Vertical plates are arranged on the sides of the support frame, and a plurality of bolt holes and pin shaft holes are arranged on the support frame. The vertical plates and the base are fixedly connected by bolts and positioning pins.

[0028] A plurality of stoppers are provided on the side wall of the flange connection seat. The stoppers are in contact with the base or adjacent transmission devices.

[0029] An opening is provided at the front end of the support frame, and a sealing plate is correspondingly provided on the support frame opening. The sealing plate is used to close the support frame; a spray head is provided on the inner side of the sealing plate, and the spray head can spray the inside of the support frame by connecting to an external water circuit.

[0030] The tops of the flange connection seats of the first transmission device and the fourth transmission device incline towards the base, so that the motors and reducers on the upper part of the flange connection seats incline towards the base.

[0031] The tops of the flange connection seats of the second transmission device and the third transmission device are horizontal planes.

[0032] The base includes: a base main body and a plurality of supports. The plurality of supports are arranged on the base main body in the horizontal direction;

[0033] A plurality of base vertical plates are provided on the side walls of the supports; a plurality of attaching plates are provided on the middle side walls of the support frame, and the attaching plates are fixedly connected to the base vertical plates.

[0034] The electric control cabinet system includes: an electric control cabinet and an electric control cabinet support;

[0035] The electric control cabinet support is fixedly arranged on the base in the horizontal direction. The electric control cabinet is arranged on the top of the electric control cabinet support. An electric control cabinet cushion plate is provided at the bottom of the electric control cabinet, and a shock absorber is arranged between the electric control cabinet cushion plate and the electric control cabinet support. The shock absorber is used to shock-absorb the electric control cabinet.

[0036] The Reuleaux drill bit includes: a drill bit base body, a plurality of pick seats and picks;

[0037] The drill bit base body includes: a triangular cylinder and a triangular seat. The triangular seat is arranged at the bottom of the triangular cylinder. The pick seats are arranged at the bottom of the triangular seat. The picks are correspondingly arranged on the pick seats;

[0038] Wear-resistant strips are correspondingly arranged on the side walls at the corners of the triangular cylinder.

[0039] The Reuleaux drill bits are divided into clockwise Reuleaux drill bits and counterclockwise Reuleaux drill bits according to the rotation direction;

[0040] Among them, the first transmission device and the third transmission device adopt a Shun Reuleaux bit, and the second transmission device and the fourth transmission device adopt a reverse Reuleaux bit;

[0041] The heights of the triangular cylinders of the Shun Reuleaux bit and the reverse Reuleaux bit are the same, and the height of the triangular seat of the reverse Reuleaux bit is higher than that of the triangular seat of the Shun Reuleaux bit.

[0042] The support shoes are located between adjacent transmission devices. The support shoes include: a first support shoe and a second support shoe. Every two of the first support shoes are arranged oppositely, and the second support shoe is vertically arranged at the connection of the two first support shoes.

[0043] The first support shoe includes: a limit plate, a column, a first sliding frame, a first oil cylinder, and a first inner sleeve;

[0044] A support shoe fixing bottom plate is provided at the bottom of the base. The limit plate is fixedly connected to the support shoe fixing bottom plate. The top of the column is fixedly connected to the limit plate. The column is vertically arranged with the first sliding frame, and one end of the column is slidably connected to the first sliding frame;

[0045] The first oil cylinder is arranged inside the first sliding frame. The extending end of the first oil cylinder is connected to the first inner sleeve, so that the first inner sleeve can be telescopically arranged inside the first sliding frame.

[0046] The second support shoe includes: a support plate, a support rod, a second sliding frame, a second oil cylinder, and a second inner sleeve;

[0047] The support rod is fixedly connected to the first sliding frame through the support plate. The second sliding frame is fixedly connected to the support rod. The second oil cylinder is arranged inside the second sliding frame. The extending end of the second oil cylinder is connected to the second inner sleeve, so that the second inner sleeve can be telescopically arranged inside the second sliding frame.

[0048] Rubber buffer seats are provided at the outer ends of the first inner sleeve and the second inner sleeve.

[0049] (III) Beneficial effects

[0050] The beneficial effect of the present invention is: a hard rock rectangular anti-slide pile hole-forming device, through the transmission devices arranged at different levels, enables adjacent bits not to interfere with each other during eccentric rotation.

[0051] Through the transmission devices arranged at different levels, adjacent bits have overlapping drilling areas without interfering with each other, and can effectively handle the under-excavation between adjacent bits. Under-excavation means that there are areas where the excavation is insufficient when adjacent bits drill and excavate hard rock.

[0052] The Reuleaux bit adopts a special-shaped structure design, with the edge part hollowed out, and at the same time, the heights of adjacent bit bases are also different. By cooperating with the transmission devices arranged in a scattered manner, it is ensured that the picks and pick seats will not interfere with the bit matrix when the adjacent bits rotate.

[0053] The Reuleaux bits at the bottoms of adjacent transmission devices rotate in opposite directions, so that the cutting forces generated by the adjacent Reuleaux bits during drilling can cancel each other out, thereby reducing the shaking of the entire hole-forming device during drilling.

[0054] When the hole-forming device drills downward, multiple support boots are combined to form multiple support ends, which can support the equipment from multiple directions, reduce the vibration of the equipment during rock breaking, improve the operating stability of the equipment, and reduce the overbreak and underbreak caused by the shaking of the equipment, reduce the damage to the equipment, and ensure the effect of rock breaking and hole shaping of the pile hole. Description of the Drawings

[0055] Figure 1 is a three-dimensional view of the hard rock rectangular anti-slide pile hole-forming device of the present invention;

[0056] Figure 2 is a schematic structural view of the transmission device of the present invention;

[0057] Figure 3 is a front view of a partial structure of the first transmission device of the present invention;

[0058] Figure 4 is a three-dimensional view of a partial structure of the first transmission device of the present invention;

[0059] Figure 5 is a front view of a partial structure of the second transmission device of the present invention;

[0060] Figure 6 is a three-dimensional view of a partial structure of the third transmission device of the present invention;

[0061] Figure 7 is a front view of a partial structure of the fourth transmission device of the present invention;

[0062] Figure 8 is a three-dimensional view of a partial structure of the fourth transmission device of the present invention;

[0063] Figure 9 is a three-dimensional view of the structure of the base and the electric control system of the present invention;

[0064] Figure 10 is a three-dimensional view of the structure of the electric control cabinet support of the present invention;

[0065] Figure 11 is a bottom view of the base of the present invention;

[0066] Figure 12 is a three-dimensional view of the structure of the support device of the present invention;

[0067] Figure 13 This is a three-dimensional structure diagram of the Shun Lemo bit of the present invention;

[0068] Figure 14 This is a three-dimensional structure diagram of the reverse Lemo bit of the present invention.

[0069]

Description of the reference numerals in the drawings

[0070] 1: First transmission device;

[0071] 2: Second transmission device;

[0072] 3: Third transmission device;

[0073] 4: Fourth transmission device;

[0074] 5: Electric control system;

[0075] 6: Base;

[0076] 7: First support shoe;

[0077] 8: Second support shoe;

[0078] 9: Lemo bit;

[0079] 10: Sprinkler head;

[0080] 11: Motor;

[0081] 12: Reducer;

[0082] 13: Cardan shaft;

[0083] 14: Support frame;

[0084] 15: Flange connection seat;

[0085] 16: Vertical plate;

[0086] 17: Stop block;

[0087] 18: Sealing plate;

[0088] 51: Electric control cabinet;

[0089] 52: Electric control cabinet backing plate;

[0090] 53: Shock absorber;

[0091] 54: Electric control cabinet support;

[0092] 61: Base main body;

[0093] 62: Support;

[0094] 63: Base vertical plate;

[0095] 64: Boot support fixed bottom plate;

[0096] 71 Limit plate;

[0097] 72 Column;

[0098] 73 First sliding frame;

[0099] 74 First oil cylinder;

[0100] 75 Rubber buffer seat;

[0101] 76 First inner sleeve;

[0102] 81 Support plate;

[0103] 82 Support rod;

[0104] 83 Second sliding frame;

[0105] 84 Second oil cylinder;

[0106] 85 Second inner sleeve;

[0107] 91: Triangular cylinder;

[0108] 92: Triangular seat;

[0109] 93: Wear-resistant strip;

[0110] 94: Pressure plate;

[0111] 95: Pick holder;

[0112] 96: Pick. Detailed implementation manners

[0113] For better explaining the present invention for easy understanding, the present invention will be described in detail below with reference to the accompanying drawings through specific implementation manners.

[0114] For better understanding the above technical solutions, the exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more clear and thorough understanding of the present invention and to completely convey the scope of the present invention to those skilled in the art.

[0115] Such as Figure 1-14As shown in the figure, the present invention provides a pore-forming device for hard-rock rectangular anti-slide piles, which is used in cooperation with the output end of a rotary drilling rig. The pore-forming device for hard-rock rectangular anti-slide piles includes: a base 6, a support device, a plurality of transmission devices, and an electric control cabinet system 5. The base 6 is used to connect to the upper-level equipment. At the bottom corresponding to each transmission device, there is a Reuleaux bit 9. A plurality of transmission devices are arranged vertically and staggeredly around the base 6 so that the Reuleaux bits 9 do not interfere with each other during eccentric rotation, and the adjacent Reuleaux bits 9 rotate in opposite directions. The support device is telescopically arranged between adjacent transmission devices to support the pore-forming device.

[0116] The base 6 includes: a base main body 61 and a plurality of supports 62. The plurality of supports 62 are arranged on the base main body 61 in the horizontal direction. On the side wall of the support 62 in the horizontal direction, there are a plurality of base vertical plates 63. The base vertical plates 63 are provided with through holes for installing bolts or positioning pins to be fixedly connected to the transmission device through the base vertical plates 63. At the bottom of the base main body 61, there is also a support shoe fixing bottom plate 64 for connecting the support device.

[0117] The transmission device is used to drive the Reuleaux bit 9. A plurality of transmission devices are arranged in a rectangular array around the base main body 61. The transmission device includes: 2 first transmission devices 1, a plurality of second transmission devices 2, a plurality of third transmission devices 3, and 2 fourth transmission devices 4.

[0118] Among them, the first transmission device 1 is located at two opposite corners of the rectangular array, and the fourth transmission device 4 is located at the other two opposite corners of the rectangular array. The second transmission devices 2 and the third transmission devices 3 are arranged at intervals along the four sides of the rectangular array.

[0119] In this embodiment, a total of 16 transmission devices are provided, that is, the first transmission device 1 is located at two opposite corners of the rectangular array, and the fourth transmission device 4 is located at the other two opposite corners of the rectangular array, and is fixed by using bolts and positioning pins. The second transmission devices 2 and the third transmission devices 3 are installed at intervals in the other twelve positions of the base 6, and are all fixed by using bolts.

[0120] The second transmission device 2 and the fourth transmission device 4 are arranged at a height higher than that of the first transmission device 1 and the third transmission device 3 in the vertical direction, so that the adjacent transmission devices are arranged vertically and staggeredly around the base 6. Through the vertically and staggeredly arranged transmission devices, the adjacent drill bits have overlapping drilling areas without interfering with each other, and can effectively handle the under-excavation phenomenon between adjacent drill bits.

[0121] The first transmission device 1, the second transmission device 2, the third transmission device 3, and the fourth transmission device 4 all include: a motor 11, a reducer 12, a support frame 14, and a universal shaft 13.

[0122] The universal shaft 13 is arranged inside the support frame 14. The Reuleaux drill bit 9 is connected to the bottom of the universal shaft 13, and the universal shaft 13 is connected to the speed reducer 12. A flange connection seat 15 is provided at the top of the support frame 14. The speed reducer 12 is fixed to the top of the support frame 14 through the flange connection seat 15, and the motor 11 is connected to the top of the speed reducer 12. The universal shaft 13 is driven by the motor 11 and the speed reducer 12 to drive the Reuleaux drill bit 9 to rotate, realizing the drilling of the inner wall of the pile hole.

[0123] Vertical plates 16 are arranged on the sides of the support frame 14. A plurality of bolt holes and pin holes are arranged on the support frame 14. The vertical plate 16 and the support 62 of the base 6 are fixedly connected through bolts and locating pins. A plurality of attaching plates are provided on the middle side wall of the support frame 14, and the attaching plates are fixedly connected to the base vertical plate 63.

[0124] A plurality of stoppers 17 are provided on the side wall of the flange connection seat 15. The stopper 17 abuts against the base 6, or the stopper 17 abuts against the adjacent transmission device. By providing the stopper 17, the vibration between the transmission device and the base 6 can be reduced, and the structural stability can be enhanced. A plurality of vertical plates 16 can also be provided on the side wall of the flange connection seat 15 for fixedly connecting the adjacent transmission device or the base 6.

[0125] In this embodiment, the third transmission device 3 is provided with a stopper 17 on the back of the flange connection seat 15, and the stopper 17 can abut against the base 6. Stoppers 17 are arranged on both sides of the flange connection seat 15 of the first transmission device 1, and the stoppers 17 can abut against the base 6.

[0126] In this embodiment, the first transmission device 1 is provided with an attaching plate on the middle side of the support frame 14, which can be connected to the base vertical plate 63 on the base 6. The fourth transmission device 4 is provided with attaching plates on the upper and lower sides of the support frame 14, which can be connected to the base vertical plate 63 on the base 6.

[0127] The front end of the support frame 14 is provided with a support frame opening, and a sealing plate 18 is correspondingly provided on the support frame opening. The sealing plate 18 is used to seal the support frame 14.

[0128] A spray head 10 is provided on the inner side of the sealing plate 18. The spray head 10 can spray the inside of the support frame 14 by connecting to an external water circuit, reducing the temperature during the drilling process of the drill bit and suppressing dust.

[0129] The tops of the flange connection seats 15 of the first transmission device 1 and the fourth transmission device 4 are inclined towards the base 6, so that the motors 11 and speed reducers 12 on the upper part of the flange connection seat 15 are inclined towards the base 6, increasing the distance between the motors 11 and speed reducers 12 and the inner wall of the pile hole, and avoiding the situation of collision between the hole-forming device and the inner wall of the pile hole during the drilling process. The tops of the flange connection seats 15 of the second transmission device 2 and the third transmission device 3 are horizontal planes.

[0130] Preferably, the top surface of the flange connection seat 15 is inclined at 2.5° toward the base 6 so that the adjacent transmission device will not be over-extruded.

[0131] The Lello drill bit 9 comprises a drill bit base, a plurality of pick seats 95 and picks 96 .

[0132] The drill bit base includes: a triangular tube 91 and a triangular seat 92. The top of the triangular tube 91 is fixedly connected to the support frame 14. The triangular seat 92 is arranged at the bottom of the triangular tube 91. The pick seat 95 is arranged at the bottom of the triangular seat 92. The pick 96 is correspondingly arranged on the pick seat 95. The pick seat 95 drives the pick 96 to rotate through a transmission device.

[0133] Wear-resistant strips 93 are correspondingly arranged on the side walls at the corners of the triangular cylinder 91, and a plurality of pressing plates 94 for fixing the wear-resistant strips 93 are arranged on the top of the triangular cylinder 91. The arrangement of the wear-resistant strips 93 can avoid friction loss caused by the adjacent Lello drill bit 9.

[0134] The Lello drill bit 9 is divided into a forward Lello drill bit and a reverse Lello drill bit according to the rotation direction. Among them, the first transmission device 1 and the third transmission device 3 use a forward Lello drill bit, and the second transmission device 2 and the fourth transmission device 4 use a reverse Lello drill bit. The rotation directions of adjacent Lello drill bits 9 are different, so that the cutting forces generated by adjacent Lello drill bits 9 during drilling can offset each other, thereby reducing the shaking of the entire hole-making device during drilling.

[0135] The triangular tube 91 of the Shun Lello drill bit and the reverse Lello drill bit has the same height, and the triangular seat 92 of the reverse Lello drill bit is higher than the triangular seat 92 of the Shun Lello drill bit to ensure that the cutting teeth 96 located above the base 6 will not interfere with the triangular seat 92 arranged below the base 6.

[0136] The electric control cabinet system 5 is fixed on the base body 61 , and the electric control cabinet system 5 includes: an electric control cabinet 51 and an electric control cabinet bracket 54 .

[0137] The electric control cabinet bracket 54 is fixed on the base 6 in the horizontal direction, the electric control cabinet 51 is arranged on the top of the electric control cabinet bracket 54, and the electric control cabinet pad 52 is arranged at the bottom of the electric control cabinet 51. The electric control cabinet 51 is supported by the electric control cabinet bracket 54 and the electric control cabinet pad 52. A shock absorber 53 is arranged between the electric control cabinet pad 52 and the electric control cabinet bracket 54, so as to reduce the influence of the vibration of the hole forming device when working on the electrical components in the electric control cabinet 51.

[0138] The motor 11 is connected to the electric control cabinet 51, and the electric control cabinet 51 is connected to the power supply through a cable. By adopting high-voltage power supply, the number of power supply cables for the motor 11 can be greatly reduced, thereby improving the convenience of equipment use.

[0139] The support device includes: a plurality of supporting shoes, which are telescopically arranged on the base 6. A supporting shoe fixing bottom plate 64 is provided at the bottom of the base 6, and the supporting shoe fixing bottom plate 64 is used to connect the supporting shoes. The supporting shoes include: a first supporting shoe 7 and a second supporting shoe 8. Every two first supporting shoes 7 are arranged oppositely, and the second supporting shoe 8 is vertically arranged at the connection of the two first supporting shoes 7.

[0140] The first supporting shoe 7 includes: a limiting plate 71, a column 72, a first sliding frame 73, a first oil cylinder 74 and a first inner sleeve 76.

[0141] The limiting plate 71 is fixedly connected to the supporting shoe fixing bottom plate 64. The top of the column 72 is fixedly connected to the limiting plate 71. The column 72 is vertically arranged with the first sliding frame 73, and one end of the column 72 is slidably connected to the first sliding frame 73.

[0142] The first oil cylinder 74 is arranged inside the first sliding frame 73. The extending end of the first oil cylinder 74 is connected to the first inner sleeve 76, so that the first inner sleeve 76 is telescopically arranged inside the first sliding frame 73.

[0143] The second supporting shoe 8 includes: a support plate 81, a support rod 82, a second sliding frame 83, a second oil cylinder 84 and a second inner sleeve 85.

[0144] The support rod 82 is fixedly connected to the first sliding frame 73 through the support plate 81. The second sliding frame 83 is fixedly connected to the support rod 82. Through the combination of the support rod 82 and the support plate 81, the second supporting shoe 8 can form a T-shaped structure with the oppositely arranged first supporting shoes 7, and on the basis of not affecting the original support effect, the support in the third direction is realized.

[0145] The second oil cylinder 84 is arranged inside the second sliding frame 83. The extending end of the second oil cylinder 84 is connected to the second inner sleeve 85, so that the second inner sleeve 85 is telescopically arranged inside the second sliding frame 83.

[0146] Through the combined setting of the first supporting shoe 7 and the second supporting shoe 8, the supporting shoes can contact the inner wall of the pile hole in multiple directions, support the hole-forming device in multiple directions, can better stabilize the equipment, reduce the shaking of the equipment during rock breaking, thereby reducing the over-excavation amount, and ensuring the rock-breaking and shape-repairing effect of the pile hole.

[0147] Preferably, rubber buffer seats 75 are provided at the outer ends of the first inner sleeve 76 and the second inner sleeve 85 to enhance the friction between the supporting shoes and the inner wall of the pile hole and prevent the support device from slipping.

[0148] The present invention provides a hard-rock rectangular anti-slide pile hole-forming device. When in use, it needs to cooperate with a rotary drilling rig. The drill pipe of the rotary drilling rig is docked with the joint on the base 6, and the rotary drilling rig is used to drive the hard-rock rectangular anti-slide pile hole-forming device to rise or fall.

[0149] Before the hard rock rectangular anti-slip pile drilling device can officially start working, it first needs to use a rotary drilling rig with a barrel drill to complete the hole guiding, then replace the barrel drill with a hard rock rectangular anti-slip pile drilling device, and put the hard rock rectangular anti-slip pile drilling device into the pile hole. Then, the support shoes of the hard rock rectangular anti-slip pile drilling device extend out along the four directions of the hard rock rectangular anti-slip pile drilling device and tighten the inner wall of the pile hole. Then, the power supply of the hard rock rectangular anti-slip pile drilling device is turned on, and 16 motors 11 drive the corresponding Lelo drill bit 9 to rotate. By controlling the rotary drilling to slowly lower the drilling device, the Lelo drill bit 9 can slowly break the rock and shape it. Because there is an overlapping area between adjacent Lelo drill bits 9 during the rotation process, the under-digging of the pile hole by the entire drilling device can be reduced. Because the gripper is a step-by-step type, the gripper has a certain vertical travel. Therefore, when the rotary drilling rig lowers the hole-making device close to the vertical travel of the gripper, it is necessary to stop drilling downwards, retract the gripper, and the gripper will fall to the bottom under the action of gravity. The gripper is extended again to tighten the inner wall of the pile hole, and the equipment continues to drill downwards. Repeat this process until the predetermined depth is reached, and then the rotary drilling rig is operated to lift the hole-making device to complete the rectangular pile hole.

[0150] The invention provides a hard rock rectangular anti-slip pile drilling device, which can prevent adjacent drill bits from interfering with each other when they rotate eccentrically by means of transmission devices arranged in different heights.

[0151] Through the transmission device arranged at different heights, adjacent drill bits can have overlapping drilling areas without interfering with each other, which can effectively deal with the under-break phenomenon between adjacent drill bits. Under-break refers to the area where adjacent drill bits do not fully dig when drilling hard rock.

[0152] The Lelo drill bit 10 adopts a special-shaped structural design with a hollowed-out edge portion. At the same time, the heights of adjacent drill bit bases are also different. By cooperating with a transmission device arranged in different heights, it is ensured that the pick 96 and the pick seat 95 of the adjacent drill bits will not interfere with the drill bit base when they rotate.

[0153] The rotation directions of the Lello drill bits 10 at the bottom of adjacent transmission devices are opposite, so that the cutting forces generated by the adjacent Lello drill bits 10 during drilling can offset each other, thereby reducing the shaking of the entire hole-forming device during drilling.

[0154] A high-strength pick seat 95 is welded on the Lailo drill bit 9, and a large-diameter pick 96 is installed on the pick seat 95. In combination with a high-power transmission device, the requirements for hard rock drilling are met, making the hole-forming device more widely applicable.

[0155] The transmission devices are arranged in a rectangular array. The support frames 14 of the transmission devices located at the four corners adopt flange connection seats 15 with inclined surfaces, which will not interfere with other transmission devices. At the same time, the distance between the motor 11 and the speed reducer 12 and the inner wall of the pile hole is increased, avoiding the collision between the hole-forming device and the inner wall of the pile hole during the drilling process.

[0156] The transmission devices are fixed on the base 6 by means of bolts and positioning pins for fastening. The vertical plates 16 are welded to the sides of the support frames 14 of the transmission devices and are bolt-connected to the base 6. And for the lower transmission devices, stoppers 17 are also arranged on the support frames 14 to ensure the stability of the connection of the transmission devices by adopting various fixing methods; for the transmission devices at the four corners, patch plates are also welded to the sides of the support frames 14 and connected to the base 6 to ensure the connection stability of the corner transmission devices.

[0157] Sprinklers 10 are installed on the support frames 14 of all the transmission devices. Through the connected water circuit, spraying can be carried out inside the support frames 14 to reduce the temperature during the drilling process of the drill bit and inhibit dust.

[0158] When the hole-forming device drills downward, multiple support boots are combined to form multiple support ends, which can support the equipment from multiple directions, reduce the vibration of the equipment during rock breaking, improve the operating stability of the equipment, reduce the overbreak and underbreak caused by the shaking of the equipment, reduce the damage to the equipment, and ensure the effect of rock breaking and shape repair of the pile hole.

[0159] Two electric control cabinets 51 are arranged on the hole-forming device. The motor 11 is wired to the electric control cabinet 51, and the electric control cabinet 51 is connected to the power supply through a cable. By adopting high-voltage power supply, the number of power supply cables of the motor 11 can be greatly reduced, improving the convenience of equipment use.

[0160] The electric control cabinet 51 is supported by an electric control cabinet bracket 54 and an electric control cabinet backing plate 52. A shock absorber 53 is installed between the electric control cabinet bracket 54 and the electric control cabinet backing plate 52 to reduce the influence of the vibration during the operation of the hole-forming device on the electrical components in the electric control cabinet 51.

[0161] In the description of the present invention, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more unless otherwise specifically defined.

[0162] In the present invention, unless otherwise clearly specified or limited, terms such as "install", "connect", "link", "fix", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral one; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium; it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0163] In the present invention, unless otherwise clearly specified or limited, when the first feature is "on" or "under" the second feature, it may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, when the first feature is "above", "over" and "on top of" the second feature, it may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. When the first feature is "under", "beneath" and "underneath" the second feature, it may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0164] In the description of this specification, the descriptions of terms such as "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0165] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A rectangular anti-slide pile hole-forming device for hard rock, characterized in that, The hard rock rectangular anti-slide pile hole-forming device includes: A base (6) for connecting to upper-level equipment; A support device including a plurality of support shoes, and the support shoes are telescopically arranged on the base (6); A plurality of transmission devices, and a Reuleaux drill bit (9) is provided at the bottom of each transmission device; the plurality of transmission devices are arranged vertically and staggeredly around the base (6) so that the Reuleaux drill bits (9) do not interfere with each other during eccentric rotation; the rotation directions of adjacent Reuleaux drill bits (9) are opposite; An electric control cabinet system (5), and the electric control cabinet system (5) is fixed on the base (6); The transmission devices are arranged in a rectangular array around the base (6), and the transmission devices include: two first transmission devices (1), a plurality of second transmission devices (2), a plurality of third transmission devices (3), and two fourth transmission devices (4); The first transmission devices (1) are located at two opposite corners of the rectangular array, and the fourth transmission devices (4) are located at the other two opposite corners of the rectangular array; the second transmission devices (2) and the third transmission devices (3) are arranged at intervals along the four sides of the rectangular array; The tops of the flange connection seats (15) of the first transmission devices (1) and the fourth transmission devices (4) are inclined towards the base (6) so that the motors (11) and reducers (12) on the upper parts of the flange connection seats (15) are inclined towards the base (6); The support shoes include: a first support shoe (7) and a second support shoe (8); The first support shoe (7) includes: a limit plate (71), a column (72), and a first sliding frame (73); A support shoe fixed bottom plate (64) is provided at the bottom of the base (6), the limit plate (71) is fixedly connected to the support shoe fixed bottom plate (64), the top of the column (72) is fixedly connected to the limit plate (71), the column (72) is perpendicular to the first sliding frame (73), and the column (72) is slidably connected to one end of the first sliding frame (73); The second support shoe (8) includes: a support plate (81) and a support rod (82); The support rod (82) is fixedly connected to the first sliding frame (73) through the support plate (81).

2. The hard rock rectangular anti-slide pile hole-forming device according to claim 1, wherein The second transmission devices (2) and the fourth transmission devices (4) are arranged at a height higher than that of the first transmission devices (1) and the third transmission devices (3) in the vertical direction so that the adjacent transmission devices are arranged vertically and staggeredly around the base (6).

3. The bored pile forming device for hard rock rectangular anti-slide piles according to claim 2, characterized in that, The first transmission device (1), the second transmission device (2), the third transmission device (3), and the fourth transmission device (4) each include: a motor (11), a reducer (12), a support frame (14), and a universal shaft (13); The universal shaft (13) is arranged inside the support frame (14), the Reuleaux drill bit (9) is connected to the bottom of the universal shaft (13), and the universal shaft (13) is connected to the reducer (12); A flange connection seat (15) is arranged at the top of the supporting frame (14). The speed reducer (12) is fixed to the top of the supporting frame (14) through the flange connection seat (15), and the motor (11) is connected to the top of the speed reducer (12). Vertical plates (16) are arranged on the sides of the supporting frame (14). A plurality of bolt holes and pin shaft holes are arranged on the supporting frame (14), and the vertical plates (16) and the base (6) are fixedly connected through bolts and positioning pins.

4. The hard rock rectangular anti-slide pile hole-forming device according to claim 3, wherein Several blocks (17) are arranged on the side wall of the flange connection seat (15). The blocks (17) are abutted against the base (6), or the blocks (17) are abutted against the adjacent transmission device.

5. The hard rock rectangular anti-slide pile hole-forming device according to claim 3, wherein A support frame opening is provided at the front end of the support frame (14), and a sealing plate (18) is correspondingly provided on the support frame opening. The sealing plate (18) is used to seal the support frame (14); a spray head (10) is provided on the inner side of the sealing plate (18), and the spray head (10) can spray the inside of the support frame (14) by connecting to an external water circuit.

6. The hard rock rectangular anti-slide pile hole-forming device according to claim 3, wherein The top of the flange connection seat (15) of the second transmission device (2) and the third transmission device (3) is a horizontal plane.

7. The hard rock rectangular anti-slide pile hole-forming device according to claim 3, wherein The base (6) includes: a base main body (61) and several supports (62). The several supports (62) are arranged on the base main body (61) in the horizontal direction; Several base vertical plates (63) are arranged on the side wall of the support (62); several attaching plates are arranged on the middle side wall of the support frame (14), and the attaching plates are fixedly connected to the base vertical plates (63).

8. The hard rock rectangular anti-slide pile hole-forming device according to claim 1, wherein The electric control cabinet system (5) includes: an electric control cabinet (51) and an electric control cabinet support (54); The electric control cabinet support (54) is fixedly arranged on the base (6) in the horizontal direction. The electric control cabinet (51) is arranged on the top of the electric control cabinet support (54). An electric control cabinet cushion plate (52) is provided at the bottom of the electric control cabinet (51), and a shock absorber (53) is arranged between the electric control cabinet cushion plate (52) and the electric control cabinet support (54). The shock absorber (53) is used to shock-absorb the electric control cabinet (51).

9. The hard rock rectangular anti-slide pile hole-forming device according to claim 1, wherein The Reuleaux bit (9) includes: a bit matrix, several pick seats (95) and picks (96). The drill bit matrix includes: a triangular cylinder (91) and a triangular seat (92). The triangular seat (92) is arranged at the bottom of the triangular cylinder (91). The pick holder (95) is arranged at the bottom of the triangular seat (92). The picks (96) are correspondingly arranged on the pick holder (95). Wear-resistant strips (93) are correspondingly arranged on the side walls at the corners of the triangular cylinder (91).

10. The hard rock rectangular anti-slide pile hole-forming device according to claim 9, wherein The Reuleaux drill bit (9) is divided into a clockwise Reuleaux drill bit and a counterclockwise Reuleaux drill bit according to the rotation direction; Among them, the first transmission device (1) and the third transmission device (3) adopt clockwise Reuleaux drill bits, and the second transmission device (2) and the fourth transmission device (4) adopt counterclockwise Reuleaux drill bits; The heights of the triangular cylinders (91) of the clockwise Reuleaux drill bit and the counterclockwise Reuleaux drill bit are the same. The height of the triangular seat (92) of the counterclockwise Reuleaux drill bit is higher than that of the triangular seat (92) of the clockwise Reuleaux drill bit.

11. The hard rock rectangular anti-slide pile hole-forming device according to claim 1, wherein The support shoes are located between adjacent transmission devices. Every two of the first support shoes (7) are arranged oppositely. The second support shoe (8) is vertically arranged at the connection of the two first support shoes (7).

12. The hard rock rectangular anti-slide pile hole-forming device according to claim 11, wherein The first support shoe (7) further includes: a first oil cylinder (74) and a first inner sleeve (76); The first oil cylinder (74) is arranged inside the first sliding frame (73). The extending end of the first oil cylinder (74) is connected to the first inner sleeve (76) so that the first inner sleeve (76) is telescopically arranged inside the first sliding frame (73).

13. The hard rock rectangular anti-slide pile hole-forming device according to claim 12, wherein The second support shoe (8) further includes: a second sliding frame (83), a second oil cylinder (84) and a second inner sleeve (85); The second sliding frame (83) is fixedly connected to the support rod (82). The second oil cylinder (84) is arranged inside the second sliding frame (83). The extending end of the second oil cylinder (84) is connected to the second inner sleeve (85) so that the second inner sleeve (85) is telescopically arranged inside the second sliding frame (83).

14. The hard rock rectangular anti-slide pile hole-forming device according to claim 13, wherein Rubber buffer seats (75) are arranged at the outer ends of the first inner sleeve (76) and the second inner sleeve (85).

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