Anti-blocking screw pile machine drill bit with early warning device and operation method

Abstract

The application discloses a kind of anti-clogging screw pile machine drill bits with early warning device and operating method, including drill bit, the lower end of inside drill bit is provided with check valve, infrared primary alarm and infrared secondary alarm, drill bit is provided with infrared primary alarm in the lower end of check valve, drill bit is provided with infrared secondary alarm in the upper end of check valve, the infrared primary alarm and infrared secondary alarm are electrically connected with mobile device terminal, infrared primary alarm and infrared secondary alarm are by infrared transmitter and infrared inductor, and the alarm signal sensed by infrared inductor is transmitted to mobile terminal device by infrared transmitter to start high-pressure water pipe and flush water.The application solves the technical problems of the prior art, such as the drill pipe and drill bit are blocked and cannot be warned in advance, and the construction period is extended due to manual dredging after the blockage.

Description

Technical Field

[0001] This invention relates to the field of screw-type cast-in-place pile construction technology, specifically to an anti-clogging screw-type pile drill bit with an early warning device and its operation method. Background Technology

[0002] Screw-driven cast-in-place piles refer to piles drilled using screw-driven piling rigs, employing both synchronous and asynchronous technologies to create a variable cross-section pile with a straight upper section and a threaded lower section. The threaded section effectively increases the pile's side friction, thereby enhancing the pile foundation's bearing capacity. Screw-driven cast-in-place piles offer advantages such as rapid construction, environmental friendliness (low noise, minimal soil removal), and high economic efficiency. In recent years, they have been widely used in highways, high-speed railways, and industrial and civil construction.

[0003] During the construction of screw-driven cast-in-place piles, screw-driven pile rigs are used for drilling. When the screw-driven pile rig is drilling in sandy soil and gravel strata, due to the defects of the drill bit itself (drilling vibration, and the drill bit chamber door not closing tightly), sand enters the drill bit. The vibration and compression during the drilling process cause the drill bit and the part of the drill rod near the drill bit to become blocked.

[0004] Concrete is pumped and poured through the cavity of a hollow drill pipe. Lifting the drill pipe opens the drill bit compartment, allowing concrete to be poured. Therefore, blockages in the drill pipe and drill bit can only be detected during the concrete pouring process. Manual clearing is typically done after lifting the drill, but this method is inefficient and cannot provide early warning of drill bit blockages. Summary of the Invention

[0005] The purpose of this invention is to provide an anti-clogging screw pile driver drill bit with an early warning device and an operating method, so as to solve the technical problems in the prior art where the drill rod and drill bit cannot be blocked in advance and the construction period is extended due to manual unblocking after the blockage.

[0006] To achieve the above objectives, the present invention provides an anti-clogging screw pile driver drill bit with an early warning device, comprising a drill bit, a check valve, a primary infrared alarm, and a secondary infrared alarm installed at the lower end of the drill bit's interior, the primary infrared alarm installed at the lower end of the check valve, and the secondary infrared alarm installed at the upper end of the check valve, wherein the primary infrared alarm and the secondary infrared alarm are electrically connected to a mobile device terminal.

[0007] Furthermore, the drill bit consists of a vertical lifting section and a conical drilling section. The outer wall of the vertical lifting section of the drill bit is threaded, and a borehole is opened in the conical drilling section at the bottom of the drill bit, on which a drill bit hatch is installed.

[0008] Furthermore, both primary and secondary infrared alarms consist of an infrared transmitter and an infrared sensor. The infrared sensor transmits the alarm signal it detects to the mobile terminal device via the infrared transmitter.

[0009] Furthermore, a high-pressure water pipe is installed at the lower end of the infrared primary alarm, and the high-pressure water pipe is electrically connected to the mobile terminal device.

[0010] Furthermore, the check valve consists of a semi-circular valve disc, a return torsion spring, a hinge shaft, and an annular baffle. The hinge shaft is radially mounted on the annular baffle, and two semi-circular valve discs and a return torsion spring are mounted on the hinge shaft.

[0011] Furthermore, the side wall of the annular baffle is provided with a stepped groove. The end of the semi-circular valve flap hinged on the hinge shaft of the annular baffle abuts against the stepped surface of the stepped groove. The end of the reset torsion spring provided on the hinge shaft abuts against the side of the semi-circular valve flap away from the stepped surface. The semi-circular valve flap is pressed against the annular baffle by the reset torsion spring.

[0012] A method for operating an anti-clogging screw pile driver drill bit with an early warning device, comprising the following steps:

[0013] S1. Align the drill bit of the screw pile driver with the pile location and adjust the verticality of the drill rod to allow the screw pile driver to drill down;

[0014] S2. The threaded drill rod is rotated down for drilling. The drill rod is drilled to the designed elevation using synchronous technology. The drill rod is rotated in the opposite direction using synchronous technology to lift the drill bit. At the same time, concrete is pumped. The concrete mixture is poured into the threaded borehole through the hollow drill rod until the threaded section reaches the designed elevation.

[0015] S3. Using asynchronous technology, continue to rotate in the opposite direction to lift the drill bit, while pumping concrete, pouring the straight section of the pile body, hoisting the steel cage, and using a vibrating rod to insert the steel cage into the concrete pile.

[0016] Furthermore, in S2, as the drill bit advances, the plugging material will begin to seep in from the bottom of the drill bit. After the plugging material seeps in, the following steps are performed:

[0017] S21. When the blockage rises to the height of the infrared primary alarm, the infrared sensor receives an abnormality and the mobile terminal device receives an alarm signal. At this time, the high-pressure water pipe can be activated to flush the blockage, and the drill can be lifted appropriately to achieve the first layer of prevention of drill bit blockage.

[0018] S22. When the infrared primary sensor fails or encounters special circumstances, the first step of preventing drill bit blockage in S21 cannot be completed. The check valve can prevent the blockage body from continuing to rise.

[0019] S23. When the check valve is insufficient to resist the impact of the blockage, the infrared secondary alarm is triggered. After receiving the signal, the terminal triggers the high-pressure water pipe to work, flushing water into the pipe under high pressure and working together to lift the drill to remove the blockage.

[0020] S24. After completing step S23, lift the drill string to check if the check valve is damaged, and repair or replace it in a timely manner.

[0021] Furthermore, the check valve in S23 has only one flow direction to prevent backflow of the medium. The check valve in the drill bit allows concrete to flow from top to bottom for grouting, and can prevent blockages such as sand and gravel from flowing from bottom to top into the interior of the drill bit.

[0022] Furthermore, during the concrete pouring in S23, when the pressure from the concrete pouring exceeds the sum of the compressive force of the return torsion spring on the semi-circular valve disc and its flow resistance, the semi-circular valve disc is opened. When the pouring is finished, the semi-circular valve disc automatically closes due to the rebound action of the return torsion spring.

[0023] Based on the above technical solution, the present invention can produce the following beneficial effects:

[0024] This invention provides an anti-clogging screw pile drill bit with an early warning device and its operating method. Addressing the problem of drill bit and drill rod clogging in sandy and gravelly soil strata during existing screw pile foundation construction, the invention incorporates an infrared sensor, an alarm, a check valve, and a secondary infrared alarm on the drill bit. During drilling, when the blockage begins to seep in from the bottom of the drill bit, the primary infrared alarm senses the blockage rising to its height and sends an alarm signal to the mobile control terminal. This triggers a high-pressure water jet to flush away the blockage, providing the first layer of clogging prevention. If the primary infrared sensor fails or encounters special circumstances preventing the first layer of clogging prevention, the check valve prevents the blockage from rising further, providing the second layer of clogging prevention. If the check valve is insufficient to resist the impact of the blockage, the secondary infrared alarm is triggered, sending a signal to the terminal to activate the high-pressure water jet to flush the pipe and simultaneously lift the drill bit to remove the blockage, providing the third layer of clogging prevention. This application provides a total of three layers of clogging prevention, enabling comprehensive early warning, prevention, and clearing of blockages. It protects the drill bit from damage, shortens the drilling period, saves costs, and is of great significance to the construction site. Attached Figure Description

[0025] Figure 1 This is a structural schematic diagram of an embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram of the check valve according to an embodiment of the present invention;

[0027] In the diagram: 1. Drill bit; 2. Check valve; 201. Semi-circular valve disc; 202. Return torsion spring; 203. Hinge shaft; 204. Annular baffle; 3. Infrared primary alarm; 4. Infrared secondary alarm; 5. Drill bit compartment door; 6. High-pressure water pipe. Implementation

[0028] To better understand the purpose, structure, and function of this invention, the following detailed description, in conjunction with the accompanying drawings, describes an anti-clogging screw pile driver drill bit with an early warning device and its operation method.

[0029] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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 the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] like Figure 1 As shown, the present invention provides an anti-clogging screw pile drill bit with an early warning device, comprising a drill bit 1. The drill bit 1 is characterized in that a check valve 2, an infrared primary alarm 3, and an infrared secondary alarm 4 are provided at the lower end of its interior. The drill bit 1 has an infrared primary alarm 3 at the lower end of the check valve 2 and an infrared secondary alarm 4 at the upper end of the check valve 2. The infrared primary alarm 3 and the infrared secondary alarm 4 are electrically connected to a mobile device terminal.

[0031] The drill bit 1 consists of a vertical lifting section and a conical drilling section. The outer wall of the vertical lifting section of the drill bit 1 is threaded, and a drill hole is opened in the conical drilling section at the bottom of the drill bit 1. A drill bit hatch 5 is installed on the drill hole.

[0032] The infrared primary alarm 3 and the infrared secondary alarm 4 are composed of an infrared transmitter and an infrared sensor. The infrared sensor will transmit the alarm signal it senses to the mobile terminal device through the infrared transmitter.

[0033] A high-pressure water pipe 6 is installed at the lower end of the infrared primary alarm 3, and the high-pressure water pipe 6 is electrically connected to the mobile terminal device.

[0034] like Figure 2 As shown, the check valve 2 is composed of a semi-circular valve disc 201, a reset torsion spring 202, a hinge shaft 203, and an annular baffle 204. The hinge shaft 203 is radially mounted on the annular baffle 204, and two semi-circular valve discs 201 and a reset torsion spring 202 are mounted on the hinge shaft 203.

[0035] The side wall of the annular baffle 204 is provided with a stepped groove. The end of the semi-circular valve 201 hinged on the hinge shaft 203 installed on the annular baffle 204 abuts against the stepped surface of the stepped groove. The end of the reset torsion spring 202 provided on the hinge shaft 203 abuts against the side of the semi-circular valve 201 away from the stepped surface. The semi-circular valve 201 is pressed against the annular baffle 204 by the reset torsion spring 202.

[0036] A method for operating an anti-clogging screw pile driver drill bit with an early warning device, comprising the following steps:

[0037] S1. Align the drill bit 1 of the screw pile driver with the pile location and adjust the verticality of the drill rod to allow the screw pile driver to drill down;

[0038] S2. The threaded drill rod is rotated down for drilling. The drill rod is drilled to the designed elevation using synchronous technology. The drill rod is rotated in the opposite direction using synchronous technology to lift the drill bit. At the same time, concrete is pumped. The concrete mixture is poured into the threaded borehole through the hollow drill rod until the threaded section reaches the designed elevation.

[0039] S3. Using asynchronous technology, continue to rotate in the opposite direction to lift the drill bit, while pumping concrete, pouring the straight section of the pile body, hoisting the steel cage, and using a vibrating rod to insert the steel cage into the concrete pile.

[0040] In step S2, as the drill bit advances, the plugging material will begin to seep in from the bottom of drill bit 1. After the plugging material seeps in, the following steps are performed:

[0041] S21. When the blockage rises to the height of the infrared primary alarm 3, the infrared sensor receives an abnormality and the mobile terminal device receives an alarm signal. At this time, the high-pressure water pipe 6 can be activated to flush the blockage, and the drill can be lifted appropriately to achieve the first layer of prevention of drill bit blockage.

[0042] S22. When the infrared primary sensor 3 fails or encounters special circumstances, it is impossible to complete the first step of preventing drill bit blockage in S21. The check valve 2 can prevent the blockage body from continuing to rise.

[0043] S23. When the check valve 2 is insufficient to resist the impact of the blockage, the infrared secondary alarm 4 is triggered. After the terminal receives the signal, it triggers the high-pressure water pipe 6 to work, flushing water into the pipe under high pressure and working together to lift the drill to remove the blockage.

[0044] S24. After completing step S23, lift the drill bit to check if check valve 2 is damaged, and repair or replace it in time.

[0045] Among them, the check valve 2 in S23 has only one flow direction to prevent backflow of the medium. The check valve 2 in the drill bit 1 allows concrete to flow from top to bottom for grouting, and can prevent blockages such as sand and gravel from flowing from bottom to top into the interior of the drill bit 1.

[0046] In the concrete pouring process in S23, when the pressure from the concrete pouring exceeds the sum of the squeezing force of the end of the reset torsion spring 202 on the semicircular valve 201 and its flow resistance, the semicircular valve 201 is opened. When the pouring is finished, the semicircular valve 201 is automatically closed due to the rebound action of the reset torsion spring 202.

[0047] It is understood that the present invention has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the invention. Furthermore, under the teachings of the present invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of the present invention.

Claims

1. An operating method for an anti-clogging screw pile driver drill bit with an early warning device, comprising a drill bit (1), characterized in that, The lower end of the drill bit (1) is equipped with a check valve (2), an infrared primary alarm (3), and an infrared secondary alarm (4). The drill bit (1) has an infrared primary alarm (3) at the lower end of the check valve (2) and an infrared secondary alarm (4) at the upper end of the check valve (2). The infrared primary alarm (3) and the infrared secondary alarm (4) are electrically connected to the mobile device terminal. The infrared primary alarm (3) and the infrared secondary alarm (4) are composed of an infrared transmitter and an infrared sensor. The infrared sensor transmits the alarm signal it senses to the mobile terminal device via the infrared transmitter; a high-pressure water pipe (6) is installed at the lower end of the infrared primary alarm (3), and the high-pressure water pipe (6) is electrically connected to the mobile terminal device; the drill bit (1) consists of a vertical lifting section and a conical drilling section, the drill bit (1) has threads on the outer wall of the vertical lifting section, and a drill hole is opened in the conical drilling section at the bottom of the drill bit (1), and a drill bit hatch (5) is installed on the drill hole. The operation method of the anti-clogging screw pile driver drill bit with early warning device includes the following steps: S1. Align the drill bit (1) of the screw pile driver with the pile point and adjust the verticality of the drill rod to make the screw pile driver drill down; S2. The threaded drill rod is rotated down for drilling. The drill rod is drilled to the designed elevation using synchronous technology. The drill rod is rotated in the opposite direction using synchronous technology to lift the drill bit. At the same time, concrete is pumped. The concrete mixture is poured into the threaded borehole through the hollow drill rod until the threaded section reaches the designed elevation. S3. Using asynchronous technology, continue to rotate in the opposite direction to lift the drill bit, while pumping concrete, pouring the straight section of the pile body, hoisting the steel cage, and using a vibrating rod to insert the steel cage into the concrete pile. In S2, as the drill bit advances, the plugging material will seep in from the bottom of the drill bit (1). After the plugging material seeps in, the following steps are included: S21. When the blockage rises to the height of the infrared primary alarm (3), the infrared sensor receives an abnormality and the mobile terminal device receives an alarm signal. At this time, the high-pressure water pipe (6) can be activated to flush the blockage, and the drill can be lifted appropriately to achieve the first layer of prevention of drill bit blockage. S22. When the infrared primary sensor (3) fails or encounters special circumstances, it is impossible to complete the first step of preventing drill bit blockage in S21. The check valve (2) can prevent the blockage body from continuing to rise. S23. When the check valve (2) is insufficient to resist the impact of the blockage, the infrared secondary alarm (4) is triggered. After the terminal receives the signal, it triggers the high-pressure water pipe (6) to work, flushing water into the pipe under high pressure and working together to remove the blockage. S24. After completing step S23, lift the drill and check whether the check valve (2) is damaged, and repair or replace it in time.

2. The operating method of an anti-clogging screw pile driver drill bit with an early warning device according to claim 1, characterized in that, The check valve (2) in S23 has only one flow direction to prevent backflow of the medium. The check valve (2) in the drill bit (1) allows concrete to flow from top to bottom for grouting and can prevent blockages such as sand and gravel from flowing from bottom to top into the interior of the drill bit (1).

3. The operating method of an anti-clogging screw pile driver drill bit with an early warning device according to claim 1, characterized in that, The check valve (2) is composed of a semi-circular valve disc (201), a reset torsion spring (202), a hinge shaft (203), and an annular baffle (204). The hinge shaft (203) is installed radially on the annular baffle (204), and two semi-circular valve discs (201) and a reset torsion spring (202) are installed on the hinge shaft (203). The side wall of the annular baffle (204) is provided with a stepped groove. The end of the semi-circular valve disc (201) hinged on the hinge shaft (203) installed on the annular baffle (204) abuts against the stepped surface of the stepped groove. The end of the reset torsion spring (202) provided on the hinge shaft (203) abuts against the side of the semi-circular valve disc (201) away from the stepped surface. The semi-circular valve disc (201) is pressed against the annular baffle (204) by the reset torsion spring (202).

4. The operating method of an anti-clogging screw pile driver drill bit with an early warning device according to claim 3, characterized in that, In the concrete pouring process described in S23, when the pressure brought by the concrete pouring is greater than the sum of the squeezing elastic force of the end of the reset torsion spring (202) on the semi-circular valve (201) and its flow resistance, the semi-circular valve (201) is opened. When the pouring is finished, the semi-circular valve (201) is automatically closed due to the rebound effect of the reset torsion spring (202).

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