Drill bit floating ball signal transmission early warning device of vertical shaft drilling machine

Abstract

The invention discloses a vertical shaft drilling machine drill bit floating ball signal transmission early warning device which comprises a box body, and the box body is installed in a drill bit of a vertical shaft drilling machine and is adjacent to a drill bit center hole in the center of the drill bit. The hob operation state sensor is arranged adjacent to the hob on the bottom surface of the drill bit and is used for generating a hob operation state signal according to the operation state of the hob; the sensing module is installed in the box body, the hob operation state sensor is in communication connection with the sensing module, and the sensing module receives and analyzes a hob operation state signal and generates a driving control instruction; and the driving module is arranged in the box body, the driving module is in communication connection with the sensing module, and the driving module receives a driving control instruction sent by the sensing module and drives the floating ball releasing module to release the floating ball according to the driving control instruction. The state of the hob can be accurately monitored in real time, effective early warning is provided, and the safety and construction efficiency of the vertical shaft drilling machine are remarkably improved.

Description

Technical Field

[0001] The invention relates to the technical field of vertical shaft construction, and more particularly to a vertical shaft drilling rig drill bit float signal transmission early warning device. Background Art

[0002] The drilling method is an efficient underground engineering construction technology that uses large vertical shaft drilling rigs to perform drilling operations from top to bottom on the ground, thereby achieving the goal of all-ground operations and drilling without going down into the well. In the first stage of this method, the drilling process, the vertical shaft is drilled and expanded from top to bottom through the rotation of the drill bit and the rotation of the roller cutter. At the same time, the mud diluted by air is used for reverse circulation from bottom to top to discharge the debris and waste residue generated by drilling, effectively discharging the debris and waste residue out of the well, ensuring the continuity and efficiency of the drilling operation.

[0003] In vertical shaft drilling projects, roller cutters are the most important rock-breaking tools, and their performance and status are directly related to drilling efficiency and cost. Usually, dozens of roller cutters are installed in each drill bit to provide sufficient rock-breaking capacity and drilling speed. However, roller cutters work in a high-pressure mud environment and face multiple failure risks.

[0004] First, due to continuous contact with hard rock, the cutter teeth will wear out, resulting in a decrease in rock breaking ability. Secondly, the cutter shaft bearings of the cutter are also prone to damage under long-term, high-load operation, which in turn affects the normal operation of the cutter. In addition, impurities and particles in the mud may adhere to the surface of the cutter, forming the so-called "mud-covered drill" phenomenon, which not only reduces the rock breaking efficiency of the cutter, but may also cause the cutter to fail completely.

[0005] The failure of the roller cutter will not only reduce drilling efficiency and increase construction costs, but may also cause damage to the drilling rig itself and even cause safety accidents. Therefore, how to timely and accurately monitor the working status of the roller cutter and prevent the failure of the roller cutter has become a technical problem that needs to be solved in the vertical shaft drilling project. Summary of the invention

[0006] To this end, the technical problem to be solved by the present invention is to provide a vertical shaft drilling rig drill bit float signal warning device, which aims to monitor the working status of the roller cutter in real time through innovative technical means, and promptly issue an early warning when the roller cutter shows signs of failure, so as to ensure the safety and efficiency of the drilling operation.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0008] A vertical shaft drilling rig drill bit float signal warning device, comprising:

[0009] A box body, the box body is installed in the drill bit of the shaft drilling machine and is adjacent to the drill bit center hole at the center of the drill bit;

[0010] A roller cutter operation state sensor, the roller cutter operation state sensor is arranged adjacent to the roller cutter on the bottom surface of the drill bit, and is used to generate a roller cutter operation state signal according to the operation state of the roller cutter;

[0011] A sensor module, the sensor module is installed in the box, the roller cutter operation status sensor is communicatively connected to the sensor module, the sensor module receives and analyzes the roller cutter operation status signal, and generates a drive control instruction;

[0012] A driving module, wherein the driving module is arranged in the box, the driving module is communicatively connected with the sensing module, the driving module receives a driving control instruction issued by the sensing module, and drives a float release module to release the float according to the driving control instruction;

[0013] A float release module, the float release module is arranged on the outer surface of the box body adjacent to the center hole of the drill bit, and the float is contained in the float release module; the density of the float is less than the density of the drilling mud in the shaft, and the diameter of the float is less than the diameter of the center hole of the drill bit; the density of the float is less than the density of the drilling mud in the shaft, so that the float can float in the drilling mud; the diameter of the float is less than the diameter of the center hole of the drill bit, so as to avoid the floats being stuck in the center hole of the drill bit when multiple floats are released at the same time;

[0014] When the roller cutter changes from a normal operating state to a failure state, the roller cutter operating state sensor sends a roller cutter operating state signal to the sensor module, and the sensor module generates a drive control instruction to control the drive module to drive the float release module to release the float, and the float enters the center hole of the drill bit and floats to the ground in the mud in the center hole of the drill bit. The device can monitor the roller cutter state in real time and accurately, without laying an extra-long cable, and has a simple and reliable structure, and is easy to install and maintain.

[0015] In the above-mentioned shaft drilling rig drill bit float signal transmission warning device, the sensor module includes an information processor, and the information processor is communicatively connected with the roller cutter operation status sensor.

[0016] The above-mentioned vertical shaft drilling rig drill bit float signal warning device, the driving module includes an electric cylinder, a push-pull synchronization block and a push-pull rod, the free end of the piston rod of the electric cylinder, the push-pull synchronization block and the push-pull rod are connected in sequence, and the end of the push-pull rod away from the push-pull synchronization block passes through the side wall of the box body and extends to the outside of the box body, and is connected to the float release module.

[0017] In the above-mentioned shaft drilling rig drill bit float signal warning device, the base of the electric cylinder is fixedly connected to the box; a push-pull rod seal is provided at the position where the push-pull rod passes through the side wall of the box, and the push-pull rod seal is sleeved on the push-pull rod. This design ensures the stable operation of the drive module in a high-pressure mud environment, prevents mud from entering the box and causing damage to the components, and at the same time ensures the flexibility and sealing of the push-pull rod.

[0018] The above-mentioned shaft drilling rig drill bit float signal warning device, the float release module includes a ball control cover plate and a ball storage seat that accommodates the float; the ball storage seat is provided with a U-shaped groove, and the opening of the U-shaped groove faces the inner cavity of the center hole of the drill bit; two parallel sliding grooves are processed on the inner wall at the notch position of the U-shaped groove on the ball storage seat, and the sliding grooves are arranged along the length direction of the ball storage seat; the ball control cover plate is slidably connected to the ball storage seat through the sliding grooves; one plate surface of the ball control cover plate faces the inner cavity of the ball storage seat, and the other plate surface faces the inner cavity of the center hole of the drill bit, and an ear seat is provided on the plate surface of the ball control cover plate facing the inner cavity of the center hole of the drill bit, and the push-pull rod is drivingly connected to the float release module through the ear seat.

[0019] The above-mentioned shaft drilling rig drill bit float signal warning device has a ball socket on the bottom wall of the U-shaped groove on the ball storage seat for limiting the float, and the ball socket is a hemispherical depression, and the float is located in the ball socket.

[0020] In the above-mentioned shaft drilling rig drill bit float signal warning device, the radius of the open part of the ball socket is greater than the radius of the float; the depth of the ball socket is less than or equal to the radius of the float, and the vertical distance between the deepest part of the ball socket and the ball control cover plate is greater than the diameter of the float and less than 1.2 times the diameter of the float. The radius of the open part of the ball socket is greater than the radius of the float, which makes a gap between the float and the ball socket, and the drilling mud can enter these gaps to generate buoyancy on the float. The depth of the ball socket and the spacing between the deepest part of the ball socket and the ball control cover plate are designed to prevent the float from getting stuck in the ball storage seat.

[0021] In the above-mentioned vertical shaft drilling rig drill bit float signal warning device, one end of the ball storage seat extends toward the shaft mouth, and the other end extends toward the shaft bottom; the number of the ball sockets is two or more, and the ball sockets are arranged along the extension direction of the ball storage seat.

[0022] The above-mentioned shaft drilling rig drill bit float signal warning device, the float release module also includes a triangular prism-shaped anti-retention component; the anti-retention component is arranged on one end of the ball storage seat adjacent to the shaft wellhead; the prism side of the anti-retention component includes an anti-retention slope, the anti-retention slope faces the bottom of the shaft, and in the direction from the bottom of the shaft to the wellhead, the distance between the anti-retention slope and the hole wall of the drill bit center hole gradually decreases from bottom to top; one end of the ball storage seat adjacent to the shaft wellhead passes through the anti-retention slope; the ball socket is arranged on the bottom wall of the U-shaped groove of the ball storage seat outside the anti-retention component. The anti-retention slope ensures that the release path of the float is unobstructed, avoiding mud deposition or impurity accumulation that may cause the float to fail to release.

[0023] The above-mentioned vertical shaft drilling rig drill bit float signal warning device also includes a battery, which is arranged in the box body, and the battery is electrically connected to the sensor module and the drive module respectively, and the battery supplies power to the sensor module and the drive module.

[0024] The technical solution of the present invention achieves the following beneficial technical effects:

[0025] 1. The present invention comprehensively optimizes the key technical links in the process of early warning of cutter failure through the innovatively designed sensor module, drive module and float release module. When the sensor module detects the cutter failure signal, it can quickly trigger the drive control command to ensure the timeliness of the early warning. The float release module controls the release of the floats one by one through the ball socket structure of the ball storage seat and the sliding cooperation of the ball control cover plate. The synergistic effect of the above technical means significantly improves the real-time monitoring of the cutter status and the intelligent level of the early warning system.

[0026] 2. The present invention ensures the long-term stable operation of the automatic float device in a high-pressure mud environment through the sealed design of the box and the optimization of the material selection of key components. The battery in the box provides a reliable power supply for the sensor module and the drive module to prevent the impact of the harsh environment on the performance of the equipment. This device does not require the laying of extra-long cables and has a simple and reliable structure that is easy to install and maintain. The present invention can issue an early warning at the beginning of the failure of the roller cutter to avoid construction interruptions and equipment damage caused by the failure. At the same time, it provides intuitive data support to help make quick decisions and improve the overall construction safety and efficiency of the shaft drilling rig. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A structural schematic diagram of a vertical shaft drilling rig drill bit float signal warning device of the present invention;

[0028] Figure 2 A schematic diagram of the structure of the drill bit body and the drill rod in the present invention;

[0029] Figure 3A schematic diagram of the structure of the float release module in the present invention;

[0030] Figure 4 A schematic diagram of a state of the float bin during the float release process in the present invention;

[0031] Figure 5 Schematic diagram of the position of the step on the top of the ball storage seat in the present invention.

[0032] The reference numerals in the figure are represented as follows: 1-box; 2-battery; 3-sensor module; 301-information processor; 4-driving module; 401-electric cylinder; 402-push-pull synchronization block; 403-push-pull rod; 5-float release module; 501-ball storage seat; 502-float; 503-ball control cover plate; 504-ear seat; 505-anti-retention component; 5051-anti-retention slope; 506-sliding groove; 507-ear seat channel; 508-ball socket; 509-step; 6-drill center hole; 7-drill rod; 8-drill body; 9-first seal; 10-box cover; 11-second seal; 12-push-pull rod seal; 13-communication cable. DETAILED DESCRIPTION

[0033] In this embodiment, a drill bit float signal transmission and early warning device for a vertical shaft drilling rig is provided. The drill bit float signal transmission and early warning device for the vertical shaft drilling rig is installed in a drill bit body 8 of the vertical shaft drilling rig.

[0034] like Figure 2 As shown, a roller cutter is arranged on the bottom surface of the drill body 8. A drill rod 7 is connected to the center of the top surface of the drill body; a drill center hole 6 is arranged at the center of the drill body 8 and the drill rod 7, and the drill center hole 6 is coaxial with the drill body 8 and the drill rod 7. One end of the drill center hole 6 passes through the bottom surface of the drill body 8 and is in fluid communication with the shaft, and the other end is in fluid communication with the mud pool on the ground; the shaft drilling rig drill float signal warning device is adjacent to the drill center hole 6.

[0035] like Figure 1 As shown, the shaft drilling rig drill bit float signal warning device includes a box 1, which is designed as a protective component that completely isolates the high-pressure mud environment, and multiple components are integrated inside. The inner cavity of the box 1 is effectively sealed by a first seal 9 and a box cover 10 to ensure that the internal components (sensing module 3 and driving module 4) are not externally damaged in the high-pressure mud environment.

[0036] The shaft drilling rig drill bit float signal transmission warning device also includes a roller cutter operation status sensor. The roller cutter operation status sensor is arranged adjacent to the roller cutter on the bottom surface of the drill bit, and is used to generate a roller cutter operation status signal according to the operation status of the roller cutter, and transmit the signal to the sensor module 3 through the communication cable 13. The communication cable 13 passes through the bottom wall of the box body 1, and a second sealing member 11 is arranged at the bottom wall of the box body 1 where the communication cable 13 passes through, and the second sealing member 11 is used to prevent mud from entering the interior of the box body 1.

[0037] The sensor module 3 includes an information processor 301 and a signal connection line. The information processor 301 is used to receive and analyze the signal transmitted by the roller cutter operation status sensor. When the analysis shows that the roller cutter is operating abnormally, a drive control instruction is generated and the drive control instruction is transmitted to the drive module 4 through the signal connection line.

[0038] The driving module 4 is used to receive the driving control instruction issued by the sensor module 3, and drive the float release module 5 to release the float 502 according to the driving control instruction. The driving module 4 includes an electric cylinder 401, a push-pull synchronization block 402 and a push-pull rod 403. The base of the electric cylinder 401 is fixed inside the box 1, and the free end of its piston rod is connected to the push-pull rod 403 through the push-pull synchronization block 402; that is, the free end of the piston rod of the electric cylinder 401, the push-pull synchronization block 402 and the push-pull rod 403 are connected in sequence. The piston rod of the electric cylinder 401 can be extended or retracted, and the push-pull rod 403 is driven to move by the push-pull synchronization block 402. One end of the push-pull rod 403 away from the push-pull synchronization block 402 passes through the side wall of the box 1 and extends to the outside of the box 1. A push-pull rod seal 12 is provided at the place where the push-pull rod 403 passes through the side wall of the box, and the seal 12 is sleeved on the push-pull rod 403 to ensure the isolation of the internal and external environments of the box.

[0039] The float release module 5 is arranged on the outer surface of the box body 1 adjacent to the drill center hole 6, and its core components include a ball storage seat 501 and a ball control cover plate 503. A U-shaped groove is provided on the ball storage seat 501, and the opening of the U-shaped groove faces the inner cavity of the drill center hole 6. A ball socket 508 for limiting the displacement of the float 502 is provided on the bottom wall of the U-shaped groove on the ball storage seat 501. The ball socket 508 is a hemispherical depression, and its depth is equal to the radius of the float 502. The vertical distance between the deepest part of the ball socket 508 and the ball control cover plate 503 is greater than the diameter of the float 502 and less than 1.2 times the diameter of the float 502.

[0040] A sliding groove 506 is machined at the notch position of the U-shaped groove on the ball storage seat 501, and the sliding groove 506 is arranged along the length direction of the ball storage seat 501. The ball control cover plate 503 is slidably connected to the ball storage seat 501 through the sliding groove 506. One plate surface of the ball control cover plate 503 faces the inner cavity of the ball storage seat 501, and the other plate surface faces the inner cavity of the drill bit center hole 6. An ear seat 504 is provided on the ball control cover plate 503, and the push-pull rod 403 of the driving module 4 is drivingly connected to the float release module 5 through the ear seat 504. The ball control cover plate 503 slides in the sliding groove 506 to control the amount of the float released.

[0041] In the initial state, the piston rod of the electric cylinder 401 is completely retracted, and the ball control cover plate 503 closes the U-shaped opening of the ball storage seat 501 (referring to the opening of the ball storage seat toward the drill bit center hole 6), ensuring that all the floating balls 502 are controlled in the ball socket 508. The radius of the open part of the ball socket 508 is larger than the radius of the floating ball 502, so there is a gap between the floating ball and the ball socket, and the surrounding of the floating ball 502 is filled with mud, and the floating ball 502 is constantly slightly moved under the influence of buoyancy.

[0042] When the roller cutter is in an abnormal operating state, the sensor module 3 generates a driving control instruction, so that the electric cylinder 401 of the driving module 4 drives the push-pull synchronization block 402 and the push-pull rod 403 to move, so that the ball control cover plate 503 slides in the sliding groove 506, and gradually releases the floating ball 502 in the ball storage seat 501. The floating ball 502 enters the drill bit center hole 6 under the action of the mud buoyancy, and floats to the ground in the mud in the drill bit center hole 6.

[0043] The density of the float 502 is less than the density of the drilling mud in the shaft, which allows the float to float in the drilling mud; the diameter of the float 502 is smaller than the diameter of the drill bit center hole 6 to prevent the floats from being stuck in the drill bit center hole when multiple balls are released at the same time.

[0044] In this embodiment, the extension direction of the ball storage seat 501 is parallel to the central axis of the drill bit center hole 6, that is, one end extends toward the shaft mouth, and the other end extends toward the shaft bottom. The number of the ball sockets 508 is 3, and the ball sockets 508 are arranged along the extension direction of the ball storage seat 501. In the initial state, the ball control cover plate 503 closes the opening of the U-shaped groove on the ball storage seat 501, and each of the ball sockets 508 is embedded with a float 502; when the roller cutter is in an abnormal operating state, the ball control cover plate 503 slides toward the wellhead under the drive of the drive module 4; along the sliding direction of the ball control cover plate 503, the floats 502 embedded in the ball sockets 508 enter the drill bit center hole 6 one by one. Figure 4 shown.

[0045] In some other embodiments, the extension direction of the ball storage seat 501 may also be perpendicular to the center axis of the drill center hole 6.

[0046] The float release module 5 also includes a triangular prism-shaped anti-retention component 505; the anti-retention component 505 is arranged on one end of the ball storage seat 501 adjacent to the shaft opening; the prism side of the anti-retention component includes an anti-retention slope 5051, the anti-retention slope 5051 faces the bottom of the shaft, and the distance between the anti-retention slope 5051 and the hole wall of the drill bit center hole 6 gradually decreases from bottom to top; one end of the ball storage seat 501 adjacent to the shaft opening passes through the anti-retention slope 5051 and is inserted into the interior of the anti-retention component, such as Figure 3 The ball socket 508 is arranged on the bottom wall of the U-shaped groove of the ball storage seat 501 outside the anti-retention component 505. In addition, the anti-retention component 505 is provided with an ear seat channel 507 for the ear seat 504 to pass through, and one end of the ear seat channel 507 penetrates the anti-retention inclined surface 5051. When the ball control cover plate 503 slides upward along the sliding groove 506, the ear seat 504 enters the ear seat channel 507.

[0047] like Figure 5 As shown, there is a step 509 at the ball storage seat 501, and the depth of the step 509 is equal to the vertical distance between the ball control cover plate 503 and the non-ball socket area surface of the bottom wall of the U-shaped groove of the ball storage bin 309. The depth of the ball socket 508 is equal to the radius of the float 502. The vertical distance between the deepest part of the ball socket 508 and the ball control cover plate 503 is greater than the diameter of the float 502, and less than 1.2 times the diameter of the float 502. At this time, the depth of the step 509 is less than the diameter of the float 502, and the float 502 is not easy to get stuck at the step 509 after it escapes from the ball socket 508. In some other embodiments, the depth of the ball socket 508 can also be less than the radius of the float 502.

[0048] like Figure 4 As shown, when the roller cutter is converted from a normal operating state to a failure state, the sensor module 3 generates and issues a drive control instruction. After the drive module 4 receives the drive control instruction, the piston rod of the electric cylinder 401 extends, and drives the push-pull rod 403 to move upward through the push-pull synchronization block 402. Further, the push-pull rod 403 drives the ball control cover plate 503 to slide upward (toward the shaft wellhead) in the sliding groove 506 through the ear seat 504, and the float 502 located at the bottom of the ball socket 508 is released first. Under the buoyancy of the mud, the float 502 rises rapidly along the center hole 6 of the drill bit until it reaches the ground.

[0049] The degree of opening of the float bin is determined by the degree of drill bit jamming and is directly controlled by the ball control cover plate 503. When the number of drill bits jamming is different, the driving control instructions issued by the sensor module 3 are different, and the piston rod of the electric cylinder 401 extends to different degrees, so that the ball control cover plate 503 slides upward in the sliding groove 506 to different extents. The more drill bits jamming, the greater the extent of the ball control cover plate 503 sliding upward in the sliding groove 506, and the greater the degree of opening of the float bin.

[0050] Furthermore, when the electric cylinder 401 pulls the ball control cover plate 503 to the maximum position, all the floating balls 502 in the ball storage seat 501 are released and enter the drill bit center hole 6. The optimized design of the anti-retention slope 5051 ensures that the release path of the floating balls is unobstructed, avoiding mud deposition or impurity accumulation that may cause the floating balls to fail to release.

[0051] In addition, a battery 2 is provided in the housing 1 as a core component for powering the system. The battery 2 is electrically connected to the information processor 301 in the sensor module 3 and the electric cylinder 401 in the drive module 4, respectively, to provide stable power support for the information processor 301 and the electric cylinder 401.

[0052] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the claims of this patent application.

Claims

1. A vertical shaft drilling rig drill bit float signal warning device, characterized in that: include: A box (1), the box (1) being installed in a drill bit of a shaft drilling machine and being adjacent to a drill bit center hole (6) at the center of the drill bit; A roller cutter operation state sensor, the roller cutter operation state sensor is arranged adjacent to the roller cutter on the bottom surface of the drill bit, and is used to generate a roller cutter operation state signal according to the operation state of the roller cutter; A sensor module (3), the sensor module (3) is installed in the housing (1), the roller cutter operation status sensor is communicatively connected to the sensor module (3), the sensor module (3) receives and analyzes the roller cutter operation status signal, and generates a drive control instruction; A driving module (4), wherein the driving module (4) is arranged in the housing (1), the driving module (4) is communicatively connected with the sensing module (3), the driving module (4) receives a driving control instruction issued by the sensing module (3), and drives the floating ball release module (5) to release the floating ball (502) according to the driving control instruction; A float release module (5), the float release module (5) being arranged on the outer surface of the box (1) adjacent to the drill bit center hole (6), the float release module (5) containing the float (502); the density of the float (502) is less than the density of the drilling mud in the shaft, and the diameter of the float (502) is less than the diameter of the drill bit center hole (6); When the roller cutter is converted from a normal operating state to a failure state, the roller cutter operating state sensor sends a roller cutter operating state signal to the sensor module (3), and the sensor module (3) generates a drive control instruction to control the drive module (4) to drive the float release module (5) to release the float (502), and the float (502) enters the drill bit center hole (6) and floats to the ground in the mud in the drill bit center hole (6).

2. The vertical shaft drilling rig drill bit float signal warning device according to claim 1 is characterized in that: The sensor module (3) comprises an information processor (301), and the information processor (301) is communicatively connected to the roller cutter operation status sensor.

3. The vertical shaft drilling rig drill bit float signal warning device according to claim 1 is characterized in that: The driving module (4) comprises an electric cylinder (401), a push-pull synchronization block (402) and a push-pull rod (403); the free end of the piston rod of the electric cylinder (401), the push-pull synchronization block (402) and the push-pull rod (403) are connected in sequence, and one end of the push-pull rod (403) away from the push-pull synchronization block (402) passes through the side wall of the box body (1) and extends to the outside of the box body (1), and is connected to the float release module (5).

4. The vertical shaft drilling rig drill bit float signal warning device according to claim 3 is characterized in that: The base of the electric cylinder (401) is fixedly connected to the box body (1); a push-pull rod seal (12) is provided at the position where the push-pull rod (403) passes through the side wall of the box body (1), and the push-pull rod seal (12) is sleeved on the push-pull rod (403).

5. The vertical shaft drilling rig drill bit float signal warning device according to claim 3, characterized in that: The float release module (5) comprises a ball control cover plate (503) and a ball storage seat (501) for accommodating the float (502); a U-shaped groove is provided on the ball storage seat (501), and the opening of the U-shaped groove faces the inner cavity of the drill bit center hole (6); two mutually parallel sliding grooves (506) are processed on the inner wall at the notch position of the U-shaped groove on the ball storage seat (501), and the sliding grooves (506) are arranged along the length direction of the ball storage seat (501); the ball control cover plate (503) is slidably connected to the ball storage seat (501) through the sliding groove (506); one plate surface of the ball control cover plate (503) faces the inner cavity of the ball storage seat (501), and the other plate surface faces the inner cavity of the drill bit center hole (6); an ear seat (504) is provided on the plate surface of the ball control cover plate (503) facing the inner cavity of the drill bit center hole (6), and the push-pull rod (403) is drivingly connected to the float release module (5) through the ear seat (504).

6. The vertical shaft drilling rig drill bit float signal warning device according to claim 5, characterized in that: A ball socket (508) for limiting the floating ball (502) is provided on the bottom wall of the U-shaped groove on the ball storage seat (501); the ball socket (508) is a hemispherical depression, and the floating ball (502) is located in the ball socket (508).

7. The vertical shaft drilling rig drill bit float signal warning device according to claim 6, characterized in that: The radius of the open end of the ball socket (508) is greater than the radius of the float (502); the depth of the ball socket (508) is less than or equal to the radius of the float (502); the vertical distance between the deepest part of the ball socket (508) and the ball control cover plate (503) is greater than the diameter of the float (502) and less than 1.2 times the diameter of the float (502).

8. The vertical shaft drilling rig drill bit float signal warning device according to claim 6, characterized in that: One end of the ball storage seat (501) extends toward the shaft opening, and the other end extends toward the shaft bottom; the number of the ball sockets (508) is two or more, and the ball sockets (508) are arranged along the extension direction of the ball storage seat (501).

9. The vertical shaft drilling rig drill bit float signal warning device according to claim 8, characterized in that: The float release module (5) further comprises a triangular prism-shaped anti-retention component (505); the anti-retention component is arranged on one end of the ball storage seat (501) adjacent to the shaft opening; the prism side of the anti-retention component (505) comprises an anti-retention slope (5051), the anti-retention slope (5051) faces the shaft bottom of the shaft, and in the direction from the shaft bottom to the shaft opening, the distance between the anti-retention slope (5051) and the hole wall of the drill bit center hole (6) gradually decreases from bottom to top; one end of the ball storage seat (501) adjacent to the shaft opening passes through the anti-retention slope (5051); the ball socket (508) is arranged on the bottom wall of the U-shaped groove of the ball storage seat (501) outside the anti-retention component (505).

10. The vertical shaft drilling rig drill bit float signal warning device according to claim 1, characterized in that: The shaft drilling rig drill bit float signal warning device further comprises a battery (2), wherein the battery (2) is arranged in the box (1), the battery (2) is electrically connected to the sensor module (3) and the drive module (4) respectively, and the battery (2) supplies power to the sensor module (3) and the drive module (4).

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