A drill bit with quick mounting and dismounting structure

Abstract

The application belongs to the technical field of drill bits and discloses a drill bit with a quick mounting and dismounting structure, which comprises a mounting block, wherein the mounting block is internally provided with a drill bit extension assembly. The worm is driven to rotate by the No.1 motor, the worm is connected with the worm gear through thread engagement, so as to drive the rotating shaft to rotate, the rotating shaft drives the screw rod to rotate through the bevel gear transmission, the screw rod is connected with the thread matching rod through thread engagement, the thread matching rod is fixedly connected with the fixed plate, so as to drive the fixed plate to move downwards along the screw rod, then the driving motor is started to drive the No.1 ejector rod to rotate, the sliding block is arranged on the upper surface of the No.1 ejector rod, so as to limit the movement of the No.1 ejector rod, better drive the No.1 ejector rod to rotate, thereby achieving the effect of keeping the secondary drill cylinder at the lower end of the No.1 ejector rod stable, and when the fixed plate is driven to move up and down, the height of the secondary drill cylinder can be adjusted, so that the drill bit is better applicable to drilling.

Description

Technical Field

[0001] This invention belongs to the field of drill bit technology, and particularly relates to a drill bit with a quick-release structure. Background Technology

[0002] In the drilling process, the drill bit is the main tool for breaking rocks, and the wellbore is formed by the drill bit breaking rocks. The quality of a wellbore formation and the time it takes to form depend not only on the characteristics of the rock formation being drilled and the performance of the drill bit itself, but also on the degree of compatibility between the drill bit and the formation.

[0003] A search revealed that application number CN202221958930.4 discloses a novel drill bit device suitable for large-diameter construction. The device includes a mounting block with a mounting groove in the middle of its side wall. A mounting assembly is detachably mounted on the inner wall of the mounting groove. A connecting block is connected to the inner wall of the mounting groove via the mounting assembly. A connecting rod is fixedly mounted in the middle of the side wall of the connecting block, and the drill bit device body is fixedly mounted in the middle of the side wall of the connecting rod. In this design, the drill bit device, by using the mounting assembly, allows for easy replacement of the drill bit device body when the mounting rod needs to be moved. The mounting rod then retracts the arc-shaped fixing plate, separating the drill bit device body from the mounting block after retraction to a certain distance. Because the mounting rod has an automatic telescopic function, it saves time compared to manual disassembly of the drill bit device body, facilitating replacement and enhancing the device's practicality.

[0004] The problem with the above-mentioned technical solutions is that when drilling large-diameter cast-in-place piles into moderately or slightly weathered hard rock bearing strata, a staged reaming drilling process is typically adopted. This involves drilling from the center of the pile with a small-diameter rotary drill bit, gradually increasing the borehole diameter after reaching the designed pile bottom elevation, until the designed pile diameter is achieved. This staged reaming process maximizes the transmission of power and torque of the rotary drilling rig to the rotary drill bit, enabling rapid drilling in hard rock, and has been widely used in rotary drilling of hard rock. However, when hard rock strata have inclined rock surfaces or poor rock mass integrity with developed fissures and fracture zones, the small-diameter drill bit lacks lateral support in the hole during the process of drilling into the rock using staged reaming. This makes it very easy for the drill bit to deviate during drilling, which is difficult and time-consuming to correct. This results in low drilling efficiency, increased construction costs, and difficulty in ensuring the quality of the pile hole. In order to solve the above-mentioned problems in staged reaming drilling of large-diameter cast-in-place piles in hard rock, the project team, based on experiments and optimization, researched and manufactured two new types of drill bits: one with upper alignment and one with lower alignment, forming the "large-diameter cast-in-place pile hard rock rotary drilling directional staged reaming construction technology". This process employs an upper-aligning drill bit to construct a pilot hole during the initial rock drilling. The diameter of the upper-aligning guide section is the same as the designed diameter of the pile hole, providing effective lateral support for the initial drilling and overcoming the problem of hole deviation caused by fractured rock or inclined rock surfaces. In subsequent staged reaming, a lower-aligning rotary drilling rig is used, with the diameter of the lower-aligning guide section remaining the same as the previous stage's borehole diameter. The lower alignment guides the rotary drilling bit as it reams within the rock strata. In the next stage of reaming, the lower-aligning reaming drill bit is continuously used until the hard rock section is completed through staged reaming. This rotary drilling rig-guided staged reaming method effectively ensures borehole verticality through the upper and lower alignment settings on the rotary drilling bit, achieving high drilling efficiency and good hole quality in hard rock. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a drill bit with a quick installation and disassembly structure that can overcome or at least partially solve the above problems.

[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows: a drill bit with a quick installation and disassembly structure, including an installation block, a plurality of evenly distributed connecting plates fixedly connected to the outside of the installation block, a primary drill barrel fixedly connected to the outside of the connecting plates, a primary limiting protrusion fixedly connected to the outer surface of the primary drill barrel, a plurality of evenly distributed primary drill bits fixedly connected to the lower edge of the primary drill barrel, a top plate installed on the upper end of the installation block, a plurality of evenly distributed installation grooves provided on the edge of the top plate, a portable installation and disassembly assembly installed in the installation grooves, a drill bit extension assembly installed in the installation block, and a first-level push rod installed at the lower end of the drill bit extension assembly.

[0007] Preferably, a secondary drill barrel is fixedly connected to the lower end of the first top rod, a secondary limiting protrusion is fixedly connected to the outer surface of the secondary drill barrel, and several evenly distributed second drill barrels are fixedly connected to the lower end of the secondary drill barrel.

[0008] Preferably, the drill bit extension assembly includes a drive motor, the lower output shaft of the drive motor is fixedly connected to a first push rod, the upper end of the first push rod is fixedly connected to a slide rail, and sliders are installed on both sides of the slide rail.

[0009] Preferably, a connecting rod is fixedly connected to the upper surface of the sliders on both sides, a fixing plate is fixedly connected to the upper end of the connecting rods on both sides, a drive motor is fixedly connected to the lower surface of the fixing plate, and threaded rods are fixedly connected to both sides of the upper surface of the fixing plate.

[0010] Preferably, the upper ends of the threaded rods on both sides are connected to lead screws through threaded engagement, and bevel gears are fixedly sleeved on the upper ends of the lead screws on both sides. Another bevel gear is fixedly sleeved on the rotating shaft, and the two bevel gears are connected together through tooth meshing.

[0011] Preferably, worm gears are fixedly sleeved on the rotating shafts on both sides, and a worm is threadedly connected to the lower side of the worm gear. One end of the worm is fixedly connected to a No. 1 motor, which is fixedly connected to the inner wall of the mounting block.

[0012] Preferably, the convenient installation and disassembly assembly includes a rotating rod, which is rotatably installed on the upper end of the mounting slot. A second top rod is fixedly connected to one side of each rotating rod, and a clamping block is fixedly connected to the lower end of each second top rod. A roller is provided on the rear side of each second top rod, and the roller is rotatably installed on the mounting bracket. A telescopic rod is fixedly connected to the lower surface of the mounting bracket, and the telescopic rod is movably installed on the fixing ring.

[0013] Preferably, the fixing ring is disposed inside the mounting block, and a plurality of evenly distributed extension plates are fixedly connected to the fixing ring. One end of each extension plate is mounted on a limiting rod, and the limiting rod is fixedly connected to the upper surface of the mounting block. A spring push rod is fixedly connected to the lower surface of each extension plate, and the spring push rod is fixedly connected to the upper surface of the mounting block.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] This invention utilizes a system where a primary motor drives a worm gear to rotate. The worm gear, connected to a worm wheel via a threaded connection, drives a rotating shaft. This shaft, in turn, drives a lead screw via a bevel gear transmission. Since the lead screw is threadedly connected to a threaded mating rod, which is fixedly connected to a fixed plate, the fixed plate moves downwards along the lead screw. Subsequently, the drive motor is activated, causing the primary ejector rod to rotate. The slide rail on the upper surface of the primary ejector rod, equipped with a slider, limits its movement, thus better controlling its rotation. This maintains the stability of the secondary drill barrel at the lower end of the primary ejector rod. Furthermore, by moving the fixed plate up and down, the height of the secondary drill barrel can be adjusted for better drilling applications.

[0016] This invention uses a spring-loaded push rod to hold the fixed ring and move it upward along the limiting rod. Since the upper surface of the fixed ring is connected to a roller and a mounting bracket via a telescopic rod, the roller can hold the second push rod and rotate around the rotating rod to clamp and install the drill bit, thereby improving the efficiency of installing and removing the drill bit while saving manual labor. Attached Figure Description

[0017] Figure 1 This is a schematic perspective view of the overall structure provided in the embodiment of the present invention;

[0018] Figure 2 This is a partial structural schematic perspective view provided in an embodiment of the present invention;

[0019] Figure 3 This is a schematic perspective view of the drill bit extension assembly structure provided in an embodiment of the present invention;

[0020] Figure 4 This is a three-dimensional schematic diagram of the convenient installation and disassembly component structure provided in the embodiment of the present invention.

[0021] In the diagram: 1. Primary drill barrel; 2. Primary limiting protrusion; 3. Connecting plate; 4. Mounting block; 5. Top plate; 6. Primary drill bit; 7. Easy installation and removal assembly; 8. Drill bit extension assembly; 9. No. 1 top rod; 10. Secondary drill bit; 11. Secondary drill barrel; 12. Secondary limiting protrusion; 13. Mounting slot; 801. Drive motor; 802. Fixing plate; 803. Connecting rod; 804. Slider; 805. Slide rail; 806, threaded rod; 807, lead screw; 808, bevel gear; 809, rotating shaft; 810, worm gear; 811, worm; 812, motor No. 1; 701, rotating rod; 702, top rod No. 2; 703, clamping block; 704, roller; 705, mounting bracket; 706, telescopic rod; 707, extension plate; 708, limit rod; 709, spring top rod; 710, retaining ring. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0023] The structure of the present invention will now be described in detail with reference to the accompanying drawings.

[0024] like Figures 1 to 4 As shown, an embodiment of the present invention provides a drill bit with a quick-installation and disassembly structure, including a mounting block 4. Several evenly distributed connecting plates 3 are fixedly connected to the outside of the mounting block 4. A primary drill barrel 1 is fixedly connected to the outside of the connecting plates 3. A primary limiting protrusion 2 is fixedly connected to the outer surface of the primary drill barrel 1. Several evenly distributed primary drill bits 6 are fixedly connected to the lower edge of the primary drill barrel 1. A top plate 5 is installed on the upper end of the mounting block 4. Several evenly distributed mounting grooves 13 are provided on the edge of the top plate 5. A portable installation and disassembly component 7 is installed in the mounting grooves 13. A drill bit extension component 8 is installed in the mounting block 4. A first-level rod 9 is installed at the lower end of the drill bit extension component 8.

[0025] A secondary drill barrel 11 is fixedly connected to the lower end of the first-stage top rod 9. A secondary limiting protrusion 12 is fixedly connected to the outer surface of the secondary drill barrel 11. Several evenly distributed second-stage drill bits 10 are fixedly connected to the lower end of the secondary drill barrel 11. Multi-stage drilling is achieved through the first-stage drill bit 6 at the lower end of the first-stage drill barrel 1 and the second-stage drill bit 10 at the lower end of the secondary drill barrel 11, which better fits the drilling advancement and improves the drilling efficiency.

[0026] The drill bit extension assembly 8 includes a drive motor 801. A first push rod 9 is fixedly connected to the lower output shaft of the drive motor 801. A slide rail 805 is fixedly connected to the upper end of the first push rod 9. Slide blocks 804 are mounted on both sides of the slide rail 805. Connecting rods 803 are fixedly connected to the upper surfaces of the two slide blocks 804. A fixing plate 802 is fixedly connected to the upper ends of the two connecting rods 803. The drive motor 801 is fixedly connected to the lower surface of the fixing plate 802. Threads are fixedly connected to both sides of the upper surface of the fixing plate 802. The mating rod 806 has threaded engagement rods 806 on both sides, with lead screws 807 threadedly connected to the upper ends of the lead screws 807. A bevel gear 808 is fixedly sleeved on the upper end of each lead screw 807. Another bevel gear 808 is fixedly sleeved on a rotating shaft 808. The two bevel gears 808 are connected together by meshing. A worm gear 810 is fixedly sleeved on each rotating shaft 808. A worm 811 is threadedly connected to the lower side of the worm gear 810. One end of the worm 811 is fixedly connected to a No. 1 motor 812. Motor 812 is fixedly connected to the inner wall of mounting block 4. Motor 812 drives worm 811 to rotate. Worm 811 is threadedly connected to worm wheel 810, which in turn drives shaft 809 to rotate. Shaft 809 drives lead screw 807 to rotate through bevel gear 808. Since lead screw 807 is threadedly connected to threaded rod 806, and threaded rod 806 is fixedly connected to fixed plate 802, fixed plate 802 can move downward along lead screw 807. Then, drive motor 801 is started to drive first push rod 9 to rotate. Since slide rail 805 on the upper surface of first push rod 9 is equipped with slider 804, it can limit the movement of first push rod 9, better drive first push rod 9 to rotate, thereby achieving the effect of maintaining the stability of secondary drill barrel 11 at the lower end of first push rod 9. When fixed plate 802 is moved up and down, the height of secondary drill barrel 11 can be adjusted to better suit drilling.

[0027] The easy-to-install and disassemble component 7 includes a rotating rod 701, which is rotatably mounted on the upper end of the mounting slot 13. A second-stage push rod 702 is fixedly connected to one side of each rotating rod 701. A clamping block 703 is fixedly connected to the lower end of each second-stage push rod 702. A roller 704 is provided on the rear side of each second-stage push rod 702. The roller 704 is rotatably mounted on a mounting bracket 705. A telescopic rod 706 is fixedly connected to the lower surface of the mounting bracket 705. The telescopic rod 706 is movably mounted on a fixing ring 710, which is located within the mounting block 4. Several evenly distributed extension plates 707 are fixedly connected to the fixing ring 710. One end of the plate 707 is installed on the limiting rod 708, which is fixedly connected to the upper surface of the mounting block 4. A spring push rod 709 is fixedly connected to the lower surface of each extension plate 707. The spring push rod 709 is fixedly connected to the upper surface of the mounting block 4. The spring push rod 709 can push the fixing ring 710 to move upward along the limiting rod 708. Since the upper surface of the fixing ring 710 is connected to the roller 704 and the mounting bracket 705 through the telescopic rod 706, the roller 704 can push the second push rod 702 to rotate around the rotating rod 701, thereby clamping and installing the drill bit, improving the efficiency of installing and disassembling the drill bit while saving manual labor.

[0028] Working principle of the invention:

[0029] In use, multi-stage drilling is achieved through the first-stage drill bit 6 at the lower end of the first-stage drill barrel 1 and the second-stage drill bit 10 at the lower end of the second-stage drill barrel 11, which better fits the drilling advance and improves drilling efficiency. The first motor 812 drives the worm gear 811 to rotate. The worm gear 811 is threadedly connected to the worm wheel 810, which in turn drives the rotating shaft 809 to rotate. The rotating shaft 809 drives the lead screw 807 to rotate through the bevel gear 808. Since the lead screw 807 is threadedly connected to the threaded mating rod 806, and the threaded mating rod 806 is fixedly connected to the fixing plate 802, the fixing plate 802 can be moved downward along the lead screw 807. Then, the drive motor 801 is started to drive the first push rod 9 to rotate. Due to the slide rail 80 on the upper surface of the first push rod 9... 5. The installation of slider 804 can limit the movement of the first push rod 9, better drive the first push rod 9 to rotate, thereby achieving the effect of maintaining the stability of the secondary drill barrel 11 at the lower end of the first push rod 9. When the fixed plate 802 is moved up and down, the height of the secondary drill barrel 11 can be adjusted to better suit drilling. The spring push rod 709 can push the fixed ring 710 to move upward along the limit rod 708. Since the upper surface of the fixed ring 710 is connected to the roller 704 and the mounting bracket 705 through the telescopic rod 706, the roller 704 can push the second push rod 702 to rotate around the rotating rod 701, clamping and installing the drill bit, improving the efficiency of installing and removing the drill bit while saving manual labor.

[0030] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can exercise their rights without departing from the scope of the present invention.

Claims

1. A drill bit with a quick-release mechanism, comprising a mounting block (4), characterized in that: The mounting block (4) is fixedly connected to a number of evenly distributed connecting plates (3) on its outer side. A first-stage drill barrel (1) is fixedly connected to the outer side of the connecting plates (3). A first-stage limiting protrusion (2) is fixedly connected to the outer surface of the first-stage drill barrel (1). A number of evenly distributed first-stage drill bits (6) are fixedly connected to the lower edge of the first-stage drill barrel (1). A top plate (5) is installed on the upper end of the mounting block (4). A number of evenly distributed mounting grooves (13) are provided on the edge of the top plate (5). A convenient installation and removal component (7) is installed in the mounting groove (13). A drill bit extension component (8) is installed in the mounting block (4). A first-stage rod (9) is installed at the lower end of the drill bit extension component (8). The drill bit extension component (8) includes a drive motor (801). A first-stage rod (9) is fixedly connected to the lower output shaft of the drive motor (801). A slide rail (805) is fixedly connected to the upper end of the first-stage rod (9). Slider blocks (804) are installed on both sides of the slide rail (805). Connecting rods (803) are fixedly connected to the upper surfaces of the sliders (804) on both sides. A fixing plate (802) is fixedly connected to the upper end of the connecting rods (803) on both sides. A drive motor (801) is fixedly connected to the lower surface of the fixing plate (802). Threaded rods (806) are fixedly connected to both sides of the upper surface of the fixing plate (802). Lead screws (807) are threadedly connected to the upper ends of the threaded rods (806) on both sides. A fixed sleeve is fitted onto the upper end of the lead screws (807). A bevel gear (808) is fixedly sleeved on a rotating shaft (809), and the two bevel gears (808) are connected together by meshing. A worm gear (810) is fixedly sleeved on the rotating shaft (809) on both sides. A worm (811) is connected to the lower side of the worm gear (810) by thread meshing. A first motor (812) is fixedly connected to one end of the worm (811), and the first motor (812) is fixedly connected to the inner wall of the mounting block (4).

2. A drill bit with a quick-release structure as described in claim 1, characterized in that: The lower end of the first top rod (9) is fixedly connected to a secondary drill barrel (11), and a secondary limiting protrusion (12) is fixedly connected to the outer surface of the secondary drill barrel (11). Several evenly distributed second drill bits (10) are fixedly connected to the lower end of the secondary drill barrel (11).

3. A drill bit with a quick-release structure as described in claim 1, characterized in that: The convenient installation and removal assembly (7) includes a rotating rod (701), which is rotatably installed on the upper end of the mounting groove (13). A second top rod (702) is fixedly connected to one side of each rotating rod (701). A clamping block (703) is fixedly connected to the lower end of each second top rod (702). A roller (704) is provided on the rear side of each second top rod (702). The roller (704) is rotatably installed on the mounting bracket (705). A telescopic rod (706) is fixedly connected to the lower surface of the mounting bracket (705). The telescopic rod (706) is movably installed on the fixing ring (710).

4. A drill bit with a quick-release structure as described in claim 3, characterized in that: The fixing ring (710) is disposed inside the mounting block (4). Several evenly distributed extension plates (707) are fixedly connected to the fixing ring (710). One end of the extension plate (707) is installed on the limiting rod (708). The limiting rod (708) is fixedly connected to the upper surface of the mounting block (4). A spring push rod (709) is fixedly connected to the lower surface of each extension plate (707). The spring push rod (709) is fixedly connected to the upper surface of the mounting block (4).

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