Hard rock cone drill

Abstract

The utility model discloses a hard rock cone drill which comprises a drill bit and a power assembly driving the drill bit to rotate, the drill bit comprises a conical cutter head and a plurality of reamer assemblies evenly arranged on the outer wall of the cutter head, and the power assembly comprises a protective cover shell, a baffle and a bottom plate. The baffle and the bottom plate are installed at the two ends of the protective cover shell correspondingly, and the cutter head is rotationally connected to the baffle. The utility model has the advantages that through the conical drill, component force block holes are drilled in the rock mass, and the bending resistance of the slide-resistant pile or the retaining wall is improved; drilling and digging of the component force block holes do not need assistance of other machines, 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 hard rock cone drill. 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 in sequence; 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 construction method drilling rig" are both to set a chain with multiple milling heads evenly distributed on the truss with active and passive drive mechanisms at both ends, and drive the chain with milling heads to drill the ground-connected wall slots through the active drive mechanism. Although the existing anti-slip pile or retaining wall slotting machine has solved some hole and slotting problems, the existing drilling rig mainly forms vertical rectangular pile holes or wall slots in the rock and soil, and cannot realize the drilling of force block holes in the rock and soil. Summary of the invention

[0004] The purpose of the utility model is to provide a hard rock cone drill, which is composed of a drill bit and a power component, based on the above-mentioned deficiencies in the prior art. The power component drives the drill bit to rotate, so as to drive the reamer component on the drill bit to drill the rock and soil, so as to realize the drilling of force component block holes in the rock body. The force component blocks can exert the vertical component of the remaining sliding force, provide the same horizontal force to produce a reverse bending moment, and improve the bending resistance of anti-sliding piles or retaining walls; the drilling of the force component block holes does not require the assistance of other mechanical equipment, which saves construction period and construction costs, improves work efficiency, and ensures the quality of the project and the safety of construction personnel.

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

[0006] A hard rock cone drill comprises a drill bit and a power assembly for driving the drill bit to rotate, wherein the drill bit comprises a conical cutter disc and a plurality of reamer assemblies evenly arranged on the outer wall of the cutter disc, the power assembly comprises a protective cover, a baffle and a bottom plate, the baffle and the bottom plate are respectively installed at both ends of the protective cover, and the cutter disc is rotatably connected to the baffle.

[0007] The power assembly also includes a rotary cutting motor, a shaft hole is opened at the center of the baffle, the rotary cutting motor is fixed between the baffle and the bottom plate, and 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] 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.

[0009] The reamer assembly comprises a cutter seat and a reamer mounted on the cutter seat. The cutter seat is provided with a plurality of circles along the circumference of the outer wall of the cutter disc, and the reamer is provided obliquely outward.

[0010] The advantages of the utility model are:

[0011] (1) Through the cone drill, force-dividing block holes are drilled in the rock body to improve the bending resistance of anti-slide piles or retaining walls;

[0012] (2) The drilling of the force block hole does not require any other mechanical assistance, thereby improving construction efficiency and saving construction and equipment costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a plan view of the conical drill of the utility model;

[0014] Figure 2 for Figure 1 Cross-section of the middle AA;

[0015] Figure 3 for Figure 2 Cross-section of the middle BB;

[0016] Figure 4 for Figure 2 Cross-section of the middle CC;

[0017] Figure 5 for Figure 2 Cross-section of the middle DD;

[0018] Figure 6 This is a force diagram of the anti-sliding pile of the utility model;

[0019] Figure 7 for Figure 6 Enlarged view of middle d;

[0020] Figure 8 It is a three-dimensional schematic diagram of the force dividing block of the utility model;

[0021] like Figures 1 to 8 As shown, the marks in the figure represent respectively:

[0022] 1. Drill bit, 2. Power assembly;

[0023] 11. Cutter disc, 12. Cutter assembly, 13. Cutter, 14. Cutter holder, 15. Steel support;

[0024] 21. protective cover, 22. baffle, 23. shaft hole, 24. bottom plate, 25. peeling motor, 26. peeling motor shaft;

[0025] 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

[0026] 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:

[0027] Example: Figures 1 to 8 As shown, this embodiment relates to a hard rock cone drill, which mainly includes a drill bit 1 and a power assembly 2. The power assembly 2 drives the drill bit 1 to rotate. The cone drill is used to drill the force block hole of the anti-sliding pile b or the retaining wall. Figures 6-8 As 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.

[0028] like Figures 1 to 4 As shown, the drill bit 1 includes a cutter disc 11 and a reamer assembly 12. The cutter disc 11 is conical. A plurality of reamer assemblies 12 are provided. The plurality of reamer assemblies 12 are evenly arranged on the outer wall of the cutter disc 11 for drilling rock and soil. In this embodiment, the reamer assembly 12 includes a cutter seat 14 and a reamer 13 installed on the cutter seat 14. The cutter seat 14 is provided with a plurality of circles along the circumference of the outer wall of the cutter disc 11. The reamer 13 is arranged obliquely outward. The arrangement of the cutter seat 14 and the reamer 13 facilitates the drill bit 1 to better drill the rock and soil.

[0029] like Figures 1 to 5 As shown, the power assembly 2 includes a protective cover 21, a baffle 22, a bottom plate 24 and a rotary cutting motor 25. The protective cover 21 is cylindrical, and the baffle 22 and the bottom plate 24 are both circular. The baffle 22 and the bottom plate 24 are respectively installed at both ends of the protective cover 21. A rotating shaft hole 23 is opened at the center of the baffle 22. The rotary cutting motor 25 is fixed between the baffle 22 and the bottom plate 24. The rotary cutting motor shaft 26 on the rotary cutting motor 25 passes through the rotating shaft hole 23 on the baffle 22 and is connected to the center of the inner wall of the cutter disc 11. The rotary cutting motor 25 drives the rotary cutting motor shaft 26 thereon to rotate, so as to drive the cutter disc 11 to rotate, so as to realize the reamer 13 to wretch the rock and soil. The rotary cutting motor shaft 26 is provided with a plurality of steel supports 15 along its circumference. The rotary cutting motor shaft 26 is connected to the inner wall of the cutter disc 11 through the steel supports 15, which plays a role in connection reinforcement. In addition, the cutter head 11 is rotatably connected to the baffle plate 22 to prevent rock and soil from entering through the gap between the cutter head 11 and the baffle plate 22 .

[0030] The beneficial technical effects of this embodiment are:

[0031] (1) Through the cone drill, force-dividing block holes are drilled in the rock body to improve the bending resistance of anti-slide piles or retaining walls;

[0032] (2) The drilling of the force block hole does not require any other mechanical assistance, thereby improving construction efficiency and saving construction and equipment costs.

[0033] 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 hard rock cone drill, Features: The utility model comprises a drill bit and a power assembly for driving the drill bit to rotate, wherein the drill bit comprises a conical cutter disc and a plurality of reamer assemblies evenly arranged on the outer wall of the cutter disc, and the power assembly comprises a protective cover, a baffle and a bottom plate, wherein the baffle and the bottom plate are respectively installed at both ends of the protective cover, and the cutter disc is rotatably connected to the baffle.

2. A hard rock cone drill according to claim 1, Features: The power assembly also includes a rotary cutting motor, a shaft hole is opened at the center of the baffle, the rotary cutting motor is fixed between the baffle and the bottom plate, and 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 hard rock cone drill according to 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.

4. A hard rock cone drill according to claim 1, Features: The reamer assembly comprises a cutter seat and a reamer mounted on the cutter seat. The cutter seat is provided with a plurality of circles along the circumference of the outer wall of the cutter disc, and the reamer is provided obliquely outward.

Images