Cone drill for drilling holes in rock-soil layer

Abstract

The utility model discloses a rock-soil layer inner drilling cone drill, which comprises a drill bit and a power device for driving the drill bit to rotate, the drill bit comprises a conical cutter head and a plurality of slag inlet holes arranged along the circumferential direction of the cutter head, and the outer wall of the cutter head is provided with a cutting knife at the edge of each slag inlet hole. The utility model has the advantages that the component force block hole is drilled and dug in the rock-soil body through the conical drill, the component force block can exert the vertical component force of the residual gliding force and provide the bending moment which is opposite to the horizontal force, and the bending resistance of the slide-resistant pile or the retaining wall is improved; drilling and deslagging equipment is high in integration level, other mechanical assistance is not needed, and the purposes of improving construction efficiency and saving construction and equipment cost are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling machines, in particular to a cone drill for drilling holes in rock and soil layers. Background Art

[0002] In slope support, roadbed construction and other projects, anti-slide piles / retaining walls are the most effective measures to transfer the lateral thrust of rock and soil to the stable stratum below the sliding surface, resist lateral thrust, and control engineering and geological disasters. They are widely used in various engineering fields. When the landslide thrust acts on the anti-slide piles or retaining walls, the direction of the residual sliding force is usually not horizontal, but at a certain angle to the horizontal direction. The angle of most landslides is between 10 and 30°. According to the residual sliding force vector analysis, there are horizontal and vertical components. The commonly used anti-slide piles or retaining walls only resist the horizontal component, and the vertical component only acts on the anti-slide piles or retaining walls to transfer to the sliding bed, and has no direct effect on ordinary anti-slide piles or retaining walls. For retaining walls with multiple rows of sawtooth force blocks at the cantilever end of the anti-slide piles or retaining walls, the force blocks can exert the vertical component of the residual sliding force, provide a bending moment in the opposite direction of the horizontal force, and improve the bending resistance of the anti-slide piles / retaining walls. However, it is extremely difficult to drill holes for sawtooth anti-slide piles or retaining wall force blocks. Traditional anti-slide piles or retaining wall holes are usually excavated manually or mechanically. Collapses caused by manual bored pile construction account for 65% of the total collapse accidents, and are inefficient and costly. Mechanical excavation is safer and more efficient. Therefore, the use of mechanical drilling and digging of sawtooth anti-slide piles or retaining wall holes in the rock and soil layer is of great significance to ensure the safety of construction workers and improve efficiency.

[0003] At present, there are various drilling equipment and mechanical excavation methods. For example, the existing anti-slip pile drilling machinery has patent number CN103244053 A "Rectangular Drilling Machine", which mainly drives two T-shaped cutters evenly distributed at the bottom of the two steel frames to move toward each other and reciprocate through two cam bodies to cut the soil into a rectangular hole. Patent number CN 104533300 A "Rectangular Drilling Machine" sets a conical drill bit at the bottom of the rectangular transmission box and a cross-shaped long knife on the four sides. The conical drill bit drills into a circular pile hole, and then the cross-shaped long knife is rotated and cut to trim it into a rectangular pile hole. Patent number CN 105951798 A "A Rectangular Drilling Machine" mainly drives four concave waist cylinders with stirring knives to cut the soil through a motor to drill into a rectangular pile hole. Existing retaining wall slotting technologies mainly include bucket type and milling wheel type. Patent number CN 114687393A "A Continuous Wall Construction Equipment and Construction Method" uses a rotary drill and a grab bucket to circulate and drill the ground-connected wall slot. Patent No. CN 110258693A "A hydraulic grab and underground continuous wall construction equipment" realizes the switching between the hydraulic grab and the double-wheel milling machine through movable buckles and connecting parts, achieving multiple uses of one machine for drilling and digging underground continuous wall trenches. In order to realize the construction of ground-connected wall in low clearance, patent number CN 114086618A "A modular milling slot device for underground ground-connected wall construction" modularizes the functional components of the ground-connected wall slotting equipment into milling and cutting modules, slurry extraction modules, coiling modules and accessory reel modules, and connects them from front to back and lays them on the track; patent number CN 216108696 U "A truss chain milling and stirring ground-connected wall machine" and patent number CN 115897551 A "A continuous wall construction equipment and construction method based on TRD drilling rig" are both equipped with a chain with multiple milling heads evenly distributed on the truss with active and passive drive mechanisms at both ends, and the chain with milling heads is driven by the active drive mechanism to drill the ground-connected wall slot. Although the existing anti-slip pile or retaining wall slotting machine has solved some hole and slotting problems. However, the following problems still exist: (1) Existing drilling rigs mainly form vertical rectangular pile holes or wall grooves in the rock and soil, but are unable to drill force block holes in the rock and soil; (2) Auxiliary equipment is required to clean the debris in the pile holes or grooves, the drilling and slag removal equipment has a low integration level, and the drilling construction efficiency is low and the cost is high. Summary of the invention

[0004] The purpose of the utility model is to provide a cone drill for drilling holes in rock and soil layers in accordance with the above-mentioned deficiencies of the prior art, which consists of a drill bit and a power device. A slag discharge channel is formed by arranging a slag inlet hole on the cutter disc of the drill bit and installing a slag discharge pipe on the power device. By first drilling horizontally in the rock and soil layer and then performing horizontal rotary drilling, it is possible to drill force component block holes in the rock and soil body. The force component blocks can exert the vertical component of the remaining sliding force, provide a bending moment in the opposite direction to the horizontal force, and improve the bending resistance of anti-sliding piles or retaining walls. The drilling and slag discharge equipment has a high degree of integration, which saves construction period and construction costs, improves work efficiency, and ensures project quality and the safety of construction personnel.

[0005] The purpose of this utility model is achieved by the following technical solutions:

[0006] A cone drill for drilling holes in rock and soil layers comprises a drill bit and a power device for driving the drill bit to rotate. The drill bit comprises a conical cutter disc and a plurality of slag inlet holes arranged along the circumference of the cutter disc. A cutting tool is installed on the outer wall of the cutter disc at the edge of each slag inlet hole.

[0007] The power device includes a protective cover, a baffle, a base plate and a rotary cutting motor. The baffle and the base plate are respectively installed at both ends of the protective cover. A shaft hole is opened at the center of the baffle. The rotary cutting motor is fixed between the baffle and the base plate. The rotary cutting motor shaft on the rotary cutting motor passes through the shaft hole on the baffle and is connected to the center of the inner wall of the cutter disc.

[0008] A slag inlet hole is provided on the side of the baffle plate, a slag outlet hole is provided on the side of the bottom plate, and a slag discharge pipe is connected between the slag inlet hole and the slag outlet hole.

[0009] The rotary shaft of the rotary cutting motor is provided with a plurality of steel supports along its circumference, and the rotary shaft of the rotary cutting motor is connected to the inner wall of the cutter disc through the steel supports.

[0010] The slag inlet hole on the cutter disc extends from the side of the cutter disc to the middle of the cutter disc and the inner diameter of the slag inlet hole gradually decreases. The cutting blade extends from the side of the cutter disc to the middle of the cutter disc.

[0011] The advantages of the utility model are:

[0012] (1) Through the cone drill, force block holes are drilled in the rock and soil. The force block can exert the vertical component of the remaining sliding force, provide the same horizontal force to produce the opposite bending moment, and improve the bending resistance of the anti-sliding pile or retaining wall;

[0013] (2) The drilling and slag removal equipment is highly integrated and does not require other mechanical assistance, thereby achieving the goal of improving construction efficiency and saving construction and equipment costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a plan view of the conical drill of the utility model;

[0015] Figure 2 for Figure 1 Cross-section of the middle AA;

[0016] Figure 3 for Figure 2 Cross-section of the middle BB;

[0017] Figure 4 for Figure 2 Cross-section of the middle CC;

[0018] Figure 5 for Figure 2 Cross-section of the middle DD;

[0019] Figure 6 This is a force diagram of the anti-sliding pile of the utility model;

[0020] Figure 7 for Figure 6 Enlarged view of middle d;

[0021] Figure 8 It is a three-dimensional schematic diagram of the force dividing block of the utility model;

[0022] like Figures 1 to 8 As shown, the marks in the figure represent respectively:

[0023] 1. Drill bit, 2. Power unit;

[0024] 11. Cutter head, 12. Slag inlet hole, 13. Cutting knife, 14. Steel support;

[0025] 21. Protective cover, 22. Baffle, 23. Slag inlet hole, 24. Rotating shaft hole, 25. Bottom plate, 26. Slag outlet hole, 27. Peeling motor, 28. Peeling motor rotating shaft, 29. Slag discharge pipe;

[0026] a. Rock and soil slope, b. Anti-sliding piles, c. Force distribution block, T. Sliding force, M T .Moment of sliding force, T v .Vertical component of sliding force, T h .Horizontal component of sliding force, M Tv .The torque of the vertical component of the sliding force. DETAILED DESCRIPTION

[0027] The following is a further detailed description of the features of the present invention and other related features through embodiments in conjunction with the accompanying drawings to facilitate understanding by technicians in the same industry:

[0028] Example: Figures 1 to 8 As shown, this embodiment relates to a cone drill for drilling holes in rock and soil layers, which mainly includes a drill bit 1 and a power device 2. The power device 2 drives the drill bit 1 to rotate. The cone drill is used to drill the force block holes of the anti-sliding piles b or retaining walls. Figures 6-8As shown, taking the anti-sliding pile b as an example, a conical hole is drilled in the rock slope a by a cone drill, and then a force component hole is drilled in the rock body by horizontal rotation drilling to form a force component c. The force component c can exert the vertical component of the remaining sliding force, provide the same horizontal force to generate a reverse bending moment, and improve the bending resistance of the anti-sliding pile. Specifically, the anti-sliding pile b includes a pile body and a force component c (a plurality of force components c form a sawtooth structure). The sliding force T of the rock slope a acts on the anti-sliding pile b, and the sliding force T is decomposed into the vertical component of the sliding force T v and the horizontal component of the sliding force T h , the moment of the sliding force T is M T , the pile is used to resist the horizontal component of sliding force T h , the force block c is used to convert the vertical component of the sliding force T v Converted into torque M Tv , and the moment M Tv With torque M T On the contrary, the bending resistance of the anti-slide pile is further improved.

[0029] like Figures 1 to 4 As shown, the drill bit 1 comprises a cutter disc 11, a slag feed hole 12 and a cutting blade 13. The cutter disc 11 is conical, and a plurality of slag feed holes 12 are arranged along the circumference of the cutter disc 11. The extending direction of the slag feed hole 12 is from the side of the cutter disc 11 to the middle of the cutter disc 11, and the inner diameter gradually decreases. A cutting blade 13 is installed at the edge of each slag feed hole 12 on the outer wall of the cutter disc 11, and the cutting blade 13 is also arranged along the circumference of the cutter disc 11, and the extending direction of the cutting blade 13 is also the same as the extending direction of the slag feed hole 12, that is, the extending direction of the cutting blade 13 is from the side of the cutter disc 11 to the middle of the cutter disc 11. The cutting blade 13 is used for cutting rock and soil, and the cut rock and soil can enter the inside of the cutter disc 11 through the slag feed hole 12.

[0030] like Figures 1 to 5 As shown, the power device 2 includes a protective cover 21, a baffle 22, a base plate 25 and a rotary cutting motor 27. The protective cover 21 is cylindrical, and the baffle 22 and the base plate 25 are both circular. The baffle 22 and the base plate 25 are respectively installed at both ends of the protective cover 21. A shaft hole 24 is opened at the center of the baffle 22. The rotary cutting motor 27 is fixed between the baffle 22 and the base plate 25. The rotary cutting motor shaft 28 on the rotary cutting motor 27 passes through the shaft hole 24 on the baffle 22 and is connected to the center of the inner wall of the cutter disc 11. The rotary cutting motor 27 drives the rotary cutting motor shaft 28 thereon to rotate, so as to drive the cutter disc 11 to rotate, so as to realize the cutting of the rock and soil by the cutting tool 13. The rotary cutting motor shaft 28 is provided with a plurality of steel supports 14 along its circumference. The rotary cutting motor shaft 28 is connected to the inner wall of the cutter disc 11 through the steel supports 14 to play a role in connection reinforcement. Moreover, each steel support 14 is located between two adjacent slag inlet holes 12 of the cutter disc 11 and will not hinder the rock and soil from entering the cutter disc 11.

[0031] like Figures 1 to 5 As shown, the cutter disc 11 is rotatably connected to the baffle 22 to prevent rock and soil from entering through the gap between the cutter disc 11 and the baffle 22. A slag inlet hole 23 is provided on the side of the baffle 22, and a slag outlet hole 26 is provided on the side of the bottom plate 25. The position and size of the slag inlet hole 23 correspond to the position and size of the slag outlet hole 26. A slag outlet pipe 29 is connected between the slag inlet hole 23 and the slag outlet hole 26, and the slag outlet pipe 29 is connected to the slag suction device. In this embodiment, the rotary cutting motor 27 drives the cutting blade 13 on the cutter disc 11 to cut the rock and soil. The cut rock and soil enter the inside of the cutter disc 11 through the slag inlet hole 12, and then pass through the slag outlet pipe 29, and finally discharged through the slag suction device.

[0032] The beneficial technical effects of this embodiment are:

[0033] (1) Through the cone drill, force block holes are drilled in the rock and soil. The force block can exert the vertical component of the remaining sliding force, provide the same horizontal force to produce the opposite bending moment, and improve the bending resistance of the anti-sliding pile or retaining wall;

[0034] (2) The drilling and slag removal equipment is highly integrated and does not require other mechanical assistance, thereby achieving the goal of improving construction efficiency and saving construction and equipment costs.

[0035] Although the above embodiments have described the concepts and embodiments of the purpose of the utility model in detail with reference to the accompanying drawings, ordinary technicians in this field can recognize that various improvements and modifications can still be made to the utility model without departing from the scope of the claims, so they are not described one by one here.

Claims

1. A cone drill for drilling holes in rock and soil layers. Features: The drill comprises a drill bit and a power device for driving the drill bit to rotate. The drill bit comprises a conical cutter disc and a plurality of slag inlet holes arranged along the circumference of the cutter disc. A cutting tool is installed at the edge of each slag inlet hole on the outer wall of the cutter disc.

2. A cone drill for drilling holes in rock and soil layers as claimed in claim 1, Features: The power device includes a protective cover, a baffle, a base plate and a rotary cutting motor. The baffle and the base plate are respectively installed at both ends of the protective cover. A shaft hole is opened at the center of the baffle. The rotary cutting motor is fixed between the baffle and the base plate. The rotary cutting motor shaft on the rotary cutting motor passes through the shaft hole on the baffle and is connected to the center of the inner wall of the cutter disc.

3. A cone drill for drilling holes in rock and soil layers as claimed in claim 2, Features: A slag inlet hole is provided on the side of the baffle plate, a slag outlet hole is provided on the side of the bottom plate, and a slag discharge pipe is connected between the slag inlet hole and the slag outlet hole.

4. A cone drill for drilling holes in rock and soil layers as claimed in claim 2, Features: The rotary shaft of the rotary cutting motor is provided with a plurality of steel supports along its circumference, and the rotary shaft of the rotary cutting motor is connected to the inner wall of the cutter disc through the steel supports.

5. A cone drill for drilling holes in rock and soil layers as claimed in claim 1, Features: The slag inlet hole on the cutter disc extends from the side of the cutter disc to the middle of the cutter disc and the inner diameter of the slag inlet hole gradually decreases. The cutting blade extends from the side of the cutter disc to the middle of the cutter disc.

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