Conical concave rotary excavating drill bit

Abstract

The utility model discloses a conical inwards-concave rotary excavating drill bit and belongs to the technical field of rotary excavating drills, the conical inwards-concave rotary excavating drill bit comprises a rotary excavating drill bit body, a guide plate, cutting teeth, a waste pile and an adjusting mechanism, a discharging groove is formed in the bottom of the rotary excavating drill bit body and divides the rotary excavating drill bit body into two parts, and a cutting knife is arranged on the side, close to the discharging groove, of the rotary excavating drill bit body. A guide plate with cutting teeth at the lower end forms a conical concave towards the interior of the rotary excavating drill bit, the section of the guide plate forms a triangular cutting opening, one end of the waste pile is located in the triangular cutting opening, stable cutting of the waste pile is achieved through the rotary excavating drill bit, and the design of the conical concave can wrap the waste pile in the cutting process. Through the design of the conical indent and the triangular cutting opening, stable support can be provided when a waste pile is cut, the waste pile is prevented from shaking in the cutting process, and the durability and practicability of the drill bit are improved through the optimization measures of additionally arranging the wear-resistant material layer and the reinforcing ribs, adjusting the length of the cutting teeth and the like.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of rotary drill bits, and in particular relates to a conical concave rotary drill bit. BACKGROUND

[0002] A rotary drill bit is a key component for foundation construction in engineering machinery and is widely used in the fields of building engineering, bridge engineering and the like. The working principle of the rotary drill bit is based on the rotary cutting principle, and the rotary drill bit is used to cut soil or rock layers to form a hole slot. The rotary drill bit has undergone multiple technical innovations since its development. The patent with the authorized announcement number CN216305830U describes a rotary drill bit, and the technical points of the patent include the design of a spiral drill bit, which is suitable for drilling in different geological conditions. The patents with the authorized announcement numbers CN214118088U and CN112502631B respectively relate to different structural designs and application scenarios of the rotary drill bit.

[0003] A conventional rotary drill bit is usually designed as a straight line or a simple curved cutting edge. Such a design cannot effectively fix a waste pile when the waste pile is cut, so that the waste pile shakes during the cutting process, thereby affecting the work efficiency and safety.

[0004] Therefore, in the prior art, the rotary drill bit has the problem of insufficient stability when cutting the waste pile, especially when one end of the waste pile is located in the cutting opening of the drill bit. Due to the lack of effective wrapping and fixing mechanism, the cutting process is not stable, thereby affecting the construction efficiency and safety.

[0005] Therefore, the application provides a conical concave rotary drill bit. CONTENT OF THE UTILITY MODEL

[0006] The conical concave rotary drill bit provided by the application solves the problems in the background art. Through the design of the conical concave structure and the triangular cutting opening, stable support can be provided when the waste pile is cut, so that the waste pile does not shake during the cutting process, thereby significantly improving the cutting efficiency and safety. At the same time, through the optimization measures such as the addition of the wear-resistant material layer, the reinforcing rib and the adjustment of the length of the cutting pick, the durability and use flexibility of the drill bit are further improved, and the practicality of the device is greatly improved.

[0007] In order to achieve the above-mentioned purpose, the application adopts the following technical solutions:

[0008] The utility model provides a kind of conical concave rotary drill bit, including rotary drill bit, guide plate, pick, waste pile and adjusting mechanism, the rotary drill bit bottom position is equipped with material discharge groove, the material discharge groove divides into two parts, the rotary drill bit is equipped with cutting knife near material discharge groove side, the guide plate with pick in material discharge groove other side position fixedly connected with baffle, rotary drill bit lower end forms conical concave to rotary drill bit interior, section constitutes a triangular cutting mouth, the waste pile one end is in triangular cutting mouth, realizes stable cutting to waste pile by rotary drill bit, the design of conical concave can be wrapped in cutting process to waste pile.

[0009] As a preferred embodiment, the guide plate forms a conical concave in the interior of the rotary drill bit, and a layer of wear-resistant material is added to the inner wall of the conical concave;

[0010] By adding a layer of wear-resistant material to the inner wall of the conical concave, the wear during cutting is reduced, the service life of the drill bit is prolonged, and the practicality of the device is improved.

[0011] As a preferred embodiment, the rotary drill bit is provided with reinforcing ribs on the outside, and the number of reinforcing ribs is several;

[0012] By adding reinforcing ribs to the outside of the drill bit, the overall structural strength of the drill bit is improved, ensuring that the drill bit does not deform or break during cutting, thereby improving the practicality of the device.

[0013] As a preferred embodiment, the adjusting mechanism includes a motor, a shaft, a main gear, a slave gear, a one-third gear, a moving plate, a tooth slot, a push plate, a main pulley, and a slave pulley;

[0014] By designing adjustable picks, the extension length of the picks can be adjusted according to the cutting requirements to adapt to the cutting operation of waste piles of different diameters, thereby improving the practicality of the device.

[0015] As a preferred embodiment, the two shafts are rotatably connected inside the rotary drill bit, the motor is fixedly connected inside the rotary drill bit, the output end of the motor is fixedly connected to one end of one of the shafts, the main pulley and the slave pulley are fixedly connected to the other shaft, respectively, and the main pulley and the slave pulley are connected by a belt drive;

[0016] By driving the motor to rotate one of the shafts, the main pulley rotates synchronously at the same time, and the main pulley and the slave pulley are driven to rotate the other shaft through the belt drive, thereby improving the practicality of the device.

[0017] As a preferred implementation form, the outer part of each of the two rotating shafts is fixedly connected with a main gear, and the inner part of the rotary drill bit is rotatably connected with a plurality of slave gears, each of which is in meshing connection with the main gear.

[0018] When the two rotating shafts rotate simultaneously, the main gears connected with the rotating shafts rotate, and the meshing of the main gears with the slave gears on both sides promotes the rotation of the third gear, thereby improving the practicability of the device.

[0019] As a preferred implementation form, one end of each of the two rotating shafts and on the side of the slave gear is fixedly connected with a third gear, and the inner part of the rotary drill bit and between the third gears is provided with two moving plates, and the inner part of each of the two moving plates is provided with a plurality of tooth grooves.

[0020] When the third gear on the left side of the main gear rotates to mesh with the tooth groove, the moving plate moves towards the deep part of the rotary drill bit, and when the third gear on the right side of the main gear rotates to mesh with the tooth groove, the moving plate extends towards the outer part of the rotary drill bit, so that the extension length of the cutting tooth can be adjusted according to the actual use requirement, thereby improving the practicability of the device.

[0021] As a preferred implementation form, each of the two moving plates is fixedly connected with a push plate, and one end of each of the cutting teeth is fixedly connected with the side of the push plate away from the moving plate.

[0022] When the cutting tooth is fixedly connected with the side of the push plate in the rotary drill bit, the extension length of the cutting tooth can be adjusted when the adjusting mechanism is driven, thereby improving the practicability of the device.

[0023] As a preferred implementation form, the position outside the rotary drill bit is provided with a discharge port, the outer part of the discharge port is fixedly connected with a sliding blocking groove, the inner part of the sliding blocking groove is slidingly connected with a sliding blocking plate outside the discharge port, and the outer part of the sliding blocking plate is fixedly connected with a handle.

[0024] The discharge of the cutting waste is realized through the setting of the discharge port, the sliding blocking plate is slidingly connected outside the discharge port in the initial state, the waste cut by the cutting knife enters the inner part of the rotary drill bit through the discharge groove, when the cutting of the waste pile is completed or a certain amount of waste is accumulated in the inner part of the rotary drill bit, the sliding blocking plate can be slid upwards along the outer part of the sliding blocking groove through the handle, so that the discharge port is completely opened, and then the waste is discharged outside along the discharge port

[0025] The beneficial effects of the present application are as follows:

[0026] 1. This conical concave rotary drilling bit, through the design of concave concave and triangular cutting edge, can provide stable support when cutting waste piles, preventing the waste piles from shaking during the cutting process, thereby significantly improving cutting efficiency and safety. At the same time, through optimization measures such as adding wear-resistant material layer, reinforcing ribs and adjusting the cutting tooth length, the durability and flexibility of the drill bit are further improved, greatly enhancing the practicality of the device.

[0027] 2. This conical concave rotary drilling bit, through innovative drill bit design, incorporates the principle of triangular vortex dynamics. The conical concavity and precision guide plate work together to form a stable gripping force field for the waste pile, maintaining excellent cutting stability even when working at heights. The innovative triangular cutting edge, combined with reinforced material, sharpens the cutting edge, significantly accelerating the cutting process for hard concrete, improving work efficiency, enhancing the stability and efficiency of waste pile cutting operations, and greatly improving the practicality of the device. Attached Figure Description

[0028] Figure 1 A schematic diagram of the top section structure of the device in this application;

[0029] Figure 2 A schematic diagram of the bottom cross-sectional structure of the device in this application;

[0030] Figure 3 This is a schematic diagram of the overall structure of the device in this application;

[0031] Figure 4 This is a schematic diagram of the internal structure of the device described in this application;

[0032] Figure 5 For this application Figure 1 Enlarged view of point A in the middle;

[0033] Figure 6 This is a schematic diagram of the adjustment mechanism of the device in this application.

[0034] The following are the labeling elements in the diagram: 1. Rotary drilling bit; 11. Reinforcing rib; 12. Discharge port; 13. Sliding groove; 14. Sliding baffle; 15. Handle; 2. Guide plate; 21. Wear-resistant material layer; 3. Cutting tooth; 4. Waste pile; 5. Adjustment mechanism; 51. Motor; 52. Shaft; 53. Main gear; 55. Driven gear; 56. One-third gear; 57. Moving plate; 58. Gear groove; 59. Push plate; 60. Main pulley; 61. Driven pulley; 7. Discharge chute; 71. Cutting blade; 72. Baffle. Detailed Implementation

[0035] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0036] Reference Figures 1-6 A conical concave rotary drilling bit includes a rotary drilling bit 1, a guide plate 2, cutting teeth 3, a waste pile 4, and an adjustment mechanism 5. The rotary drilling bit 1 has a discharge chute 7 at its bottom, dividing the rotary drilling bit 1 into two parts. Two cutting blades 71 are symmetrically arranged on the side of the other part of the rotary drilling bit 1 near the discharge chute 7. A baffle 72 is fixedly connected to the other side of the discharge chute 7. The guide plate 2, with cutting teeth 3 at its lower end, forms a concave concave shape inside the rotary drilling bit 1, with a cross-section forming a triangular cutting edge. One end of the waste pile 4 is located inside the triangular cutting opening. The rotary drilling bit 1 is used to achieve stable cutting of the waste pile 4. The concave design can wrap the waste pile 4 during the cutting process. When in use, the rotary drilling bit 1 is controlled to rotate, thereby driving the bottom cutting blade 71 to rotate and cut the waste pile 4. During this process, the waste material generated by cutting enters the interior of 1 through the discharge chute 7. Due to the setting of the baffle 72, the cut waste material will not be discharged through the discharge chute 7 on the other side, thereby realizing the collection of the cut waste material and preventing the cut waste material from contaminating the pile groove.

[0037] A layer of wear-resistant material 21 is added to the inner wall of the conical concave part of the guide plate 2 to form the rotary drill bit 1. By adding the wear-resistant material layer 21 to the inner wall of the conical concave part, wear during the cutting process is reduced, the service life of the drill bit is extended, and the practicality of the device is improved.

[0038] The rotary drilling bit 1 is provided with reinforcing ribs 11 on the outside, and there are several reinforcing ribs 11. By adding reinforcing ribs 11 on the outside of the drill bit, the overall structural strength of the drill bit is improved, ensuring that the drill bit will not deform or break during the cutting process, thereby improving the practicality of the device.

[0039] The adjustment mechanism 5 includes a motor 51, a rotating shaft 52, a main gear 53, a driven gear 55, a third gear 56, a moving plate 57, a tooth groove 58, a push plate 59, a main pulley 60, and a driven pulley 61. By designing adjustable cutting teeth 3, the extension length of the cutting teeth 3 can be adjusted according to the cutting requirements to adapt to the cutting operation of waste piles 4 of different diameters, thereby improving the practicality of the device.

[0040] Both rotating shafts 52 are rotatably connected inside the rotary drilling bit 1. A motor 51 is fixedly connected inside the rotary drilling bit 1, and the output end of the motor 51 is fixedly connected to one end of one of the rotating shafts 52. A main pulley 60 and a driven pulley 61 are fixedly connected to the two rotating shafts 52 respectively, and the main pulley 60 and the driven pulley 61 are connected by belt drive. By driving the motor 51 to drive one of the rotating shafts 52 to rotate, the main pulley 60 rotates synchronously at the same time. The main pulley 60 and the driven pulley 61 drive the other rotating shaft 52 to rotate through belt drive, thereby improving the practicality of the device.

[0041] Both rotating shafts 52 are fixedly connected to the outside of a main gear 53. The rotary drilling bit 1 is rotatably connected to multiple driven gears 55, each driven gear 55 meshing with the main gear 53. When the two rotating shafts 52 rotate simultaneously, they will drive the main gear 53 connected to them to rotate. The main gear 53 meshes with the driven gears 55 on both sides, causing one-third gear 56 to start rotating, thereby improving the practicality of the device.

[0042] One-third gears 56 are fixedly connected to one end of each of the two rotating shafts 52 and to the side of the gear 55. Two movable plates 57 are arranged inside the rotary drill bit 1 and between the one-third gears 56. Multiple tooth grooves 58 are opened inside the two movable plates 57. When the one-third gear 56 located on the left side of the main gear 53 rotates to mesh with the tooth grooves 58, it will drive the movable plates 57 to move deeper into the rotary drill bit 1. When the one-third gear 56 located on the right side of the main gear 53 rotates to mesh with the tooth grooves 58, it will drive the movable plates 57 to extend outward from the rotary drill bit 1. The extension length of the cutting teeth 3 can be adjusted according to actual usage requirements, thereby improving the practicality of the device.

[0043] Push plates 59 are fixedly connected to both movable plates 57, and one end of each cutting tooth 3 is fixedly connected to the side of the push plate 59 away from the movable plate 57. By fixing one end of the cutting tooth 3 inside the rotary drill bit 1 to one side of the push plate 59, the cutting tooth 3 can be adjusted to adjust its extension length when the adjustment mechanism 5 is driven, thereby improving the practicality of the device.

[0044] Symmetrical discharge ports 12 are located on the outer side of the rotary drilling bit 1. A sliding baffle 13 is fixedly connected to the outer side of the discharge port 12. A sliding baffle 14 is slidably connected inside the sliding baffle 13 outside the discharge port 12. A handle 15 is fixedly connected to the outer side of the sliding baffle 14. The discharge port 12 is designed to discharge the cut waste. In the initial state, the sliding baffle 14 is slidably connected to the outer side of the discharge port 12. The waste cut by the cutting blade 71 enters the rotary drilling bit 1 through the discharge channel 7. When the cutting of the waste pile 4 is completed or a certain amount of waste accumulates inside the rotary drilling bit 1, the sliding baffle 14 can be slid upward along the outer side of the sliding baffle 13 using the handle 15, thereby fully opening the discharge port 12. Then the waste will be discharged outward along the discharge port 12.

[0045] Working principle: When the extension length of the cutting tooth 3 needs to be adjusted, the drive motor 51 drives one of the rotating shafts 52 to rotate. At the same time, the main pulley 60 rotates synchronously. The main pulley 60 and the driven pulley 61 drive the other rotating shaft 52 to rotate through belt transmission. When the two rotating shafts 52 rotate at the same time, they will drive the main gear 53 connected to them to rotate. The main gear 53 meshes with the driven gears 55 on both sides, causing the third gear 56 to start rotating. When the third gear 56 on the left side of the main gear 53 rotates to mesh with the tooth groove 58, it will drive the moving plate 57 to move deeper into the rotary drill bit 1. When the third gear 56 on the right side of the main gear 53 rotates to mesh with the tooth groove 58, it will drive the moving plate 57 to extend to the outside of the rotary drill bit 1. The extension length of the cutting tooth 3 can be adjusted according to the actual use requirements.

[0046] The rotary drilling bit 1 has a guide plate 2 with cutting teeth 3 at its lower end that forms a conical concave shape inside the drill bit, creating a triangular cutting edge. This design allows one end of the waste pile 4 to be located within the triangular cutting edge during cutting, enabling stable cutting of the waste pile 4 by the rotary drilling bit 1. Simultaneously, the conical concave design encloses the waste pile 4 during cutting, significantly improving the stability of the cutting process. A wear-resistant material layer 21 is added to the inner wall of the conical concave shape to reduce wear during cutting and extend the drill bit's service life. Reinforcing ribs 11 are added to the outer side of the drill bit to improve its overall structural strength, ensuring that the drill bit will not deform or break during cutting. The adjustable cutting teeth 3 allow for adjustment of their extension length according to cutting requirements, accommodating waste piles 4 of different diameters. The cutting teeth 3 can be made of cemented carbide or ceramic materials to improve cutting efficiency and wear resistance.

[0047] The design of the conical concave shape and triangular cutting edge provides stable support when cutting the waste pile 4, preventing the waste pile 4 from shaking during the cutting process, thereby significantly improving cutting efficiency and safety. At the same time, the durability and flexibility of the drill bit are further improved by adding wear-resistant material layer 21, reinforcing rib 11 and adjusting the length of the cutting tooth 3.

[0048] In existing rotary drill bits, the guide plate 2 with cutting teeth 3 is parallel to or protrudes outward from the end of the rotary drill bit 1. In this application, the guide plate 2 with cutting teeth 3 and the end of the rotary drill bit 1 are concave in a conical shape. Through innovative drill bit design, the principle of triangular vortex dynamics is incorporated. The conical concavity and the precision guide plate work together to form a stable gripping force field for the waste pile. Even when working at height, it can maintain excellent cutting stability. The innovative triangular cutting edge is combined with reinforced material to sharpen the cutting edge. It significantly speeds up the cutting process for hard concrete and improves work efficiency. The integrated intelligent slag discharge channel uses centrifugal force and spiral diversion technology to optimize the flow trajectory of waste slag, ensuring unobstructed continuous operation, extending the service life of the equipment and improving work efficiency. It also improves the stability and efficiency of the waste pile 4 cutting operation.

[0049] The above are merely preferred embodiments of this application, but the scope of protection of this application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and the inventive concept of this application, should be included within the scope of protection of this application.

Claims

1. A conical concave rotary drilling bit, comprising a rotary drilling bit (1), a guide plate (2), cutting teeth (3), a waste pile (4), and an adjustment mechanism (5), characterized in that, The rotary drilling bit (1) has a discharge trough (7) at the bottom, which divides the rotary drilling bit (1) into two parts. The rotary drilling bit (1) has a cutting blade (71) on the side near the discharge trough (7), and a baffle (72) is fixedly connected on the other side of the discharge trough (7). The guide plate (2) with cutting teeth (3) at the lower end of the rotary drilling bit (1) forms a conical concave shape inside the rotary drilling bit (1), and the cross section forms a triangular cutting mouth. One end of the waste pile (4) is located inside the triangular cutting mouth. The rotary drilling bit (1) achieves stable cutting of the waste pile (4). The conical concave design can wrap the waste pile (4) during the cutting process.

2. The conical concave rotary drilling bit according to claim 1, characterized in that, The guide plate (2) has an additional layer of wear-resistant material (21) on the inner wall of the conical concave part inside the rotary drill bit (1).

3. The conical concave rotary drilling bit according to claim 1, characterized in that, The rotary drilling bit (1) is provided with reinforcing ribs (11) on its outer side, and there are several reinforcing ribs (11).

4. A conical concave rotary drilling bit according to claim 1, characterized in that, The adjustment mechanism (5) includes a motor (51), a rotating shaft (52), a main gear (53), a driven gear (55), a third gear (56), a moving plate (57), a toothed groove (58), a push plate (59), a main pulley (60), and a driven pulley (61).

5. A conical concave rotary drilling bit according to claim 4, characterized in that, Both of the rotating shafts (52) are rotatably connected inside the rotary drilling bit (1). A motor (51) is fixedly connected inside the rotary drilling bit (1), and the output end of the motor (51) is fixedly connected to one end of one of the rotating shafts (52). A main pulley (60) and a driven pulley (61) are fixedly connected to the two rotating shafts (52), and the main pulley (60) and the driven pulley (61) are connected by belt drive.

6. A conical concave rotary drilling bit according to claim 5, characterized in that, Both of the two rotating shafts (52) are fixedly connected to the outside of the main gear (53), and the rotary drilling bit (1) is rotatably connected to a plurality of driven gears (55), each of the driven gears (55) meshing with the main gear (53).

7. A conical concave rotary drilling bit according to claim 6, characterized in that, One-third gear (56) is fixedly connected to one end of each of the two rotating shafts (52) and to the side of the gear (55). Two movable plates (57) are provided inside the rotary drilling bit (1) and between the one-third gears (56). Multiple tooth grooves (58) are provided inside the two movable plates (57).

8. A conical concave rotary drilling bit according to claim 4, characterized in that, Push plates (59) are fixedly connected to both of the moving plates (57), and one end of each cutting tooth (3) is fixedly connected to the side of the push plate (59) away from the moving plate (57).

9. A conical concave rotary drilling bit according to claim 1, characterized in that, The rotary drilling bit (1) is provided with symmetrical discharge ports (12) on the outside. A sliding groove (13) is fixedly connected to the outside of the discharge port (12). A sliding baffle (14) is slidably connected inside the sliding groove (13) on the outside of the discharge port (12). A handle (15) is fixedly connected to the outside of the sliding baffle (14).

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