Rotary excavating drill bit with early warning device

Abstract

The invention discloses a rotary excavating drill bit with an early warning device. The rotary excavating drill bit comprises a rotary excavating barrel, a first early warning sensor, a rotary excavating strip seat and a sensor electric connection socket located in the middle of the top end of the rotary excavating barrel. The device has the beneficial effects that an early-warning radar sensing scanning circular surface can be formed through a group of first early-warning sensors which are linearly distributed, dangerous obstacles in an unknown area in front of a rotary excavating section can be comprehensively scanned without dead angles, and high-value buried objects such as underground important cables and the like are prevented from being damaged by rotary excavating; the early warning sensor I is arranged in the protective circular groove with the micropore cover, so that the early warning sensor I is prevented from being damaged; the structure function of closing the fan-shaped hole in the end part by virtue of self-rotation adjustment is achieved, so that rotary soil can be ensured to enter the rotary excavating barrel, and the soil can be prevented from falling off after being lifted and moved out of the tunnel; the problem that due to the rotary digging depth problem, connection between a sensing element arranged on a rotary digging structure and a cable is inconvenient is solved.

Description

Technical Field

[0001] This invention relates to the field of rotary drilling rigs, specifically a rotary drilling bit with an early warning device. Background Technology

[0002] Rotary drilling rigs are specialized equipment used in foundation engineering construction, primarily for drilling and grouting piles, and are widely used in building construction, bridge construction, subway construction, and other engineering fields. However, existing rotary drilling bits, during deep rotary drilling operations, have a limited front-end structure with a single function, making it impossible to assess the conditions of the soil ahead. This poses a potential hazard to buried high-value objects such as cables. Therefore, to address these issues, a rotary drilling bit with an early warning device is proposed. Summary of the Invention

[0003] The purpose of this invention is to provide a rotary drilling bit with an early warning device in order to solve the above-mentioned problems.

[0004] The present invention achieves the above-mentioned objectives through the following technical solution: a rotary drilling bit with an early warning device, comprising a rotary drilling cylinder, an early warning sensor one, a rotary drilling bar seat, and a sensor electrical connector located at the top center of the rotary drilling cylinder. The bottom end of the rotary drilling cylinder has two fan-shaped holes, and the middle position of the bottom of the rotary drilling cylinder is connected to the middle of the rotary drilling bar seat via a rotating shaft. Each threaded connection seat distributed on both sides of the inclined surface of the rotary drilling bar seat is equipped with a high-hardness conical tooth, and an early warning sensor one is installed inside each protective circular groove between the threaded connection seats. Strip blocks are installed on the two fan-shaped baffles at the top of the rotary drilling bar seat, and an early warning sensor two is installed inside the slot on one side of the strip block. The top end face of the sensor electrical connector has a groove, and the inside of the groove has an upper guide groove and a lower guide groove respectively on both sides. The first and second warning sensors are electrically connected to the second sensor connector. The second sensor connector is fixed in the middle of the bottom of the groove. Two semi-circular protective plates symmetrically covering the second sensor connector are each equipped with an arc magnet. The two arc magnets are fitted with the same set of spring coils. The two arc magnets are in a state of outward movement due to the repulsive force formed between them by the inserted tubular magnet. The first sensor connector and the second sensor connector are in contact at the bottom of the tubular magnet.

[0005] Preferably, the tubular magnet is installed inside the circular groove structure at one end of the rotating rod, and the other end of the rotating rod is provided with a sensor electrical connector with the same connection structure.

[0006] Preferably, one end of the rotating section is fixedly connected to the top of the rotary drilling cylinder via a flange, and there are several rotating sections, which are also connected to each other via flanges.

[0007] Preferably, the convex plate on one side of the semi-circular shielding plate is slidably located inside the lower guide groove.

[0008] Preferably, a guide plate is installed in the middle of the surface of the arc magnet block, and the two sides of the guide plate are slidably installed inside the upper guide groove.

[0009] Preferably, the protective circular groove is threaded with a microporous cap structure.

[0010] Preferably, a central circular groove is provided at the middle position of the bottom of the rotary drilling bar seat, and the central circular groove is connected to the interior of the distributed protective circular grooves through a channel, and a sealing cover is installed at the opening of the central circular groove.

[0011] The beneficial effects of this invention are: A set of early warning sensors arranged in a straight line can form an early warning radar sensing scanning circle, which can scan dangerous obstacles in the unknown area in front of the rotary excavation section without blind spots, avoiding damage to important underground cables and other high-value buried objects. The early warning sensors are placed inside a protective circular groove with a microporous cover to prevent damage to the early warning sensors. It has the structural function of closing the end fan-shaped hole by adjusting its own rotation, which can not only ensure that the rotating soil enters the rotary excavator, but also prevent the soil from falling out of the tunnel when it is lifted out. Both ends of the rotating section are equipped with a tubular magnet with sensor electrical connector one and a sensor electrical connector socket with the same connection structure. The end-to-end connection between the rotating sections can meet the needs of rotary drilling at different depths. At the end-to-end connection between two adjacent rotating sections, the tubular magnet is inserted between two arc-shaped magnet blocks. Combined with the mutual repulsion between the tubular magnet and the two arc-shaped magnet blocks, the two semi-circular protective plates connected to the two arc-shaped magnet blocks move to both sides at the same time, thereby exposing the sensor electrical connector two located at the bottom of the groove. This allows the sensor electrical connector two to be connected to the sensor electrical connector one, and the electrical connection is firm. This ensures the convenience and protection of the sensor cable connection, and solves the problem of inconvenience in setting up sensing elements and connecting cables on the rotary drilling structure due to the depth of rotary drilling. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram showing the connection between the overall structure of the invention and the rotating joint. Figure 2 This is a schematic diagram of the overall structure and connection of the present invention; Figure 3 This is a cross-sectional view of the sensor electrical connector connection structure of the present invention; Figure 4 This is a partially enlarged view of the rotary drilling strip support connection structure of the present invention; Figure 5 This is a schematic diagram of the connection structure between the bottom of the rotary drilling cylinder and the rotary drilling strip seat of the present invention.

[0014] In the diagram: 1. Rotary drilling cylinder; 110. End fan-shaped hole; 2. Early warning sensor one; 3. Rotary drilling bar seat; 310. Threaded connection seat; 320. Protective circular groove; 330. Central circular groove; 4. High-hardness conical teeth; 5. Fan-shaped baffle; 6. Sensor electrical connector one; 7. Tubular magnet; 8. Rotary joint; 9. Sensor electrical connector socket; 910. Groove; 911. Upper guide groove; 912. Lower guide groove; 10. Strip block; 11. Sensor electrical connector two; 12. Semi-circular shielding plate; 13. Guide plate; 14. Arc magnet block; 15. Spring ring; 16. Early warning sensor two; 17. Rotary shaft. Detailed Implementation

[0015] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0016] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0017] In the description of this invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0018] Please see Figure 1-5As shown, a rotary drilling bit with an early warning device includes a rotary drilling body 1, an early warning sensor 2, a rotary drilling strip seat 3, and a sensor electrical connector 9 located at the top center of the rotary drilling body 1. The bottom of the rotary drilling body 1 has two fan-shaped holes, and the middle position of the bottom of the rotary drilling body 1 is connected to the middle of the rotary drilling strip seat 3 through a rotating shaft 17. Each threaded connection seat 310 distributed on both sides of the inclined surface of the rotary drilling strip seat 3 is equipped with a high-hardness conical tooth 4, and an early warning sensor 2 is installed inside each protective circular groove 320 located between the threaded connection seats 310. A strip block 10 is installed on each of the two fan-shaped baffles 5 at the top of the rotary drilling strip seat 3, and an early warning sensor 16 is installed inside the slot on one side of the strip block 10. The top end face of the sensor electrical connector 9 has a groove 910, and the inside of the groove 910 has an upper guide groove 911 and a lower guide groove 912 respectively on both sides. The first warning sensor 2 and the second warning sensor 16 are electrically connected to the second sensor connector 11. The second sensor connector 11 is fixed in the middle position of the bottom of the groove 910. The surfaces of the two semi-circular protective plates 12 that symmetrically cover the second sensor connector 11 are each equipped with an arc magnet block 14. The two arc magnet blocks 14 are fitted with the same set of spring coils 15. The two arc magnet blocks 14 are in a state of outward movement due to the repulsive force formed between them by the inserted tubular magnet 7. The first sensor connector 6 located at the bottom of the tubular magnet 7 is in contact with the second sensor connector 11.

[0019] The tubular magnet 7 is installed inside the circular groove structure at one end of the rotating section 8, and the other end of the rotating section 8 is provided with a sensor electrical connector 9 with the same connection structure. One end of the rotating section 8 is fixedly connected to the top of the rotary drilling cylinder 1 through a flange, and there are several rotating sections 8. The several rotating sections 8 are also connected to each other through flanges. By setting several rotating sections 8 that can be connected end to end, it is not only convenient for deep rotary drilling, but also ensures the effective connection between sensor cables.

[0020] Furthermore, the convex plate on one side of the semi-circular shielding plate 12 is slidably located inside the lower guide groove 912.

[0021] Furthermore, a guide plate 13 is installed in the middle of the surface of the arc magnet block 14, and the two sides of the guide plate 13 are slidably installed inside the upper guide groove 911.

[0022] Furthermore, the protective circular groove 320 is threaded with a microporous cover structure.

[0023] Furthermore, a central circular groove 330 is provided at the middle position of the bottom of the rotary drilling bar seat 3, and the central circular groove 330 is connected to the interior of the distributed protective circular grooves 320 through a channel, and a sealing cover is installed at the opening of the central circular groove 330.

[0024] Specific early warning plans: such as Figure 1 , Figure 5 and Figure 4 As shown, by setting protective circular grooves 320 between the threaded connection seats 310 for installing high-hardness conical teeth 4, and protectively installing early warning sensors 2 inside each protective circular groove 320, an early warning radar sensing scanning surface can be formed. At the same time, the early warning sensors 2 are connected to external image monitoring equipment. Once the early warning sensors 2 detect obstacles such as underground cables or high-hardness objects in front of the high-hardness conical teeth 4, the external image monitoring equipment will be in an alarm state, prompting the rotary drilling personnel to adjust the construction plan. The advantage is that by a set of linearly distributed early warning sensors 2, an early warning radar sensing scanning surface can be formed, which can comprehensively scan the unknown area in front of the rotary drilling section without blind spots, avoiding damage to important underground cables and other high-value buried materials during rotary drilling. Moreover, the early warning sensors 2 are placed inside the protective circular grooves 320 with microporous covers to prevent damage to the early warning sensors 2. The operating principle of the rotary drilling bit is as follows: Under the rotation of the rotary drilling cylinder 1 connected by the rotary drilling rig via the rotating link 8, the bottom of the rotary drilling bar seat 3 is on the ground, and the high-hardness conical teeth 4 installed on it are inserted into the soil. The middle part of the rotary drilling bar seat 3 is rotatably connected to the middle position of the bottom of the rotary drilling cylinder 1 via the rotating shaft 17. Thus, the rotary drilling cylinder 1 rotates first. After the end fan-shaped hole 110 on the rotary drilling cylinder 1 is completely misaligned with the fan-shaped baffle 5 on the rotary drilling bar seat 3, the side wall corresponding to the end fan-shaped hole 110 touches the strip block 10 on the fan-shaped baffle 5 and rotates together along the rotary drilling direction. Thus, at this time, the rotary drilling bar seat 3 and the high-hardness conical teeth 4 connected to it open and rotate together to achieve the rotary drilling effect. The drilled soil enters the interior of the rotary drilling cylinder 1 through the open end fan-shaped hole 110. When it is necessary to remove the rotary drilling cylinder 1 filled with soil from the tunnel, the rotary drilling cylinder 1 rotates slightly in the opposite direction, so that the end fan-shaped hole 110 is blocked by the fan-shaped baffle 5 to prevent the soil from falling when the rotary drilling cylinder 1 is lifted. When the rotary drilling cylinder 1 is moved out, the part connected to the bottom of the rotary drilling bar seat 3 is fixed to the ground. At the same time, the rotary drilling cylinder 1 is rotated slightly in the forward direction again, so that the fan-shaped baffle 5 is moved away from the end fan-shaped hole 110. At this time, the rotary drilling cylinder 1 is lifted, so that the soil inside the rotary drilling cylinder 12 falls to the ground from the end fan-shaped hole 110 under gravity. The advantage of this is that it has the structural function of closing the end fan-shaped hole 110 by adjusting its own rotation, which can both ensure that the rotating soil enters the rotary excavator body 1 and prevent the soil from falling out of the tunnel when it is lifted out. The rotating section 8 is equipped with a tubular magnet 7 with a sensor electrical connector 6 at each end and a sensor electrical connector socket 9 with the same connection structure. The end-to-end connection between the rotating sections 8 can meet the needs of rotary drilling at different depths. At the end-to-end connection between two adjacent rotating sections 8, the tubular magnet 7 is inserted between two arc-shaped magnet blocks 14. Combined with the mutual repulsion between the tubular magnet 7 and the two arc-shaped magnet blocks 14, the two semi-circular shielding plates 12 connected to the two arc-shaped magnet blocks 14 move to both sides at the same time, so as to expose the sensor electrical connector 11 located at the bottom of the groove 910. This allows the sensor electrical connector 11 to be connected to the sensor electrical connector 6, and the electrical connection is firm. This ensures the convenience and protection of the sensor cable connection and solves the problem of inconvenience in setting up sensing elements and connecting cables on the rotary drilling structure due to the depth of rotary drilling.

[0025] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of the equivalent elements of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0026] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A rotary drilling bit with an early warning device, characterized in that: The system includes a rotary drilling cylinder (1), a warning sensor (2), a rotary drilling bar seat (3), and a sensor electrical connector (9) located at the top center of the rotary drilling cylinder (1). The rotary drilling cylinder (1) has two fan-shaped holes at its bottom end, and the middle of the bottom of the rotary drilling cylinder (1) is connected to the middle of the rotary drilling bar seat (3) via a rotating shaft (17). Each threaded connector (310) located on the inclined surfaces on both sides of the rotary drilling bar seat (3) is equipped with high-hardness conical teeth (4), and the threaded connector (310) is located on the inclined surfaces on both sides of the rotary drilling bar seat (310). Each protective circular groove (320) between 0) is equipped with a warning sensor 1 (2), and two fan-shaped baffles (5) at the top of the rotary drilling bar seat (3) are equipped with strip blocks (10). A warning sensor 2 (16) is installed in the slot on one side of the strip block (10). The top end face of the sensor electrical connector (9) is provided with a groove (910), and the inside of the groove (910) is provided with an upper guide groove (911) and a lower guide groove (912) on both sides respectively. The first warning sensor (2) and the second warning sensor (16) are electrically connected to the second sensor connector (11). The second sensor connector (11) is fixed in the middle position of the bottom of the groove (910). The surfaces of the two semi-circular shields (12) symmetrically covering the second sensor connector (11) are equipped with arc magnet blocks (14). The two arc magnet blocks (14) are fitted with the same set of spring rings (15). The two arc magnet blocks (14) are in a state of pushing outward by the repulsive force formed between them by the inserted tubular magnet (7). The first sensor connector (6) located at the bottom of the tubular magnet (7) is in contact with the second sensor connector (11).

2. A rotary drilling bit with an early warning device according to claim 1, characterized in that: The tubular magnet (7) is installed inside the circular groove structure at one end of the rotating rod (8), and the other end of the rotating rod (8) is provided with a sensor electrical connector (9) with the same connection structure.

3. A rotary drilling bit with an early warning device according to claim 2, characterized in that: One end of the rotating section (8) is fixedly connected to the top of the rotary drilling cylinder (1) via a flange, and there are several rotating sections (8), which are also connected to each other via flanges.

4. A rotary drilling bit with an early warning device according to claim 1, characterized in that: The convex plate on one side of the semi-circular shield (12) slides inside the lower guide groove (912).

5. A rotary drilling bit with an early warning device according to claim 1, characterized in that: A guide plate (13) is installed in the middle of the surface of the arc magnet block (14), and the two sides of the guide plate (13) are slidably installed inside the upper guide groove (911).

6. A rotary drilling bit with an early warning device according to claim 1, characterized in that: The protective circular groove (320) has a micro-hole cover structure installed in the groove thread.

7. A rotary drilling bit with an early warning device according to claim 1, characterized in that: The rotary drilling bar seat (3) has a central circular groove (330) at the middle position of its bottom, and the central circular groove (330) is connected to the interior of the distributed protective circular grooves (320) through a channel. A sealing cover is installed at the opening of the central circular groove (330).

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