Drill jamming escape structure of rotary drilling rig
Through the rotary drilling rig stuck drill release structure, using the rescue rotary drilling rig and external oil pipe to increase the rotational torque, combined with the electric rotary table and telescopic rod to cut the soil, the problem of difficulty in releasing the rotary drilling rig when the drill bit is located deep after the drill is stuck is solved, and efficient rescue and real-time monitoring are achieved to prevent drill buried accidents.
Patent Information
- Application Number
- CN202422847103.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-21
- Publication Date
- 2025-09-23
- Estimated Expiration
- 2034-11-21
AI Technical Summary
When a rotary drilling rig gets stuck, especially when the drill bit is located deep, existing treatment measures have limitations, making it difficult to get out of the jam in time, and may cause hole wall collapse and drill burial accidents.
A rotary drilling rig stuck drill rescue structure is adopted, including a rescue rotary drilling rig and multiple external oil pipes. The external oil pipes provide power to the hydraulic motor to increase the rotational torque of the trapped power head. It is equipped with a torque sensor and a central console for real-time monitoring and alarm, and combined with an electric rotary table and telescopic rod to cut the soil to assist in rescue.
It achieves efficient rescue when the drilling tool is located at a deep position, avoids spatial restrictions, improves rescue efficiency, and prevents drilling accidents through real-time monitoring and alarms.
Smart Images
Figure CN223374373U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of rotary drilling rigs, and more specifically relates to a drill stuck release structure for rotary drilling rigs. Background Art
[0002] A rotary drilling rig is a construction machine suitable for drilling holes in building foundation projects. Primarily suited for construction in sandy, clayey, and silty soils, it is widely used in various foundation construction applications, including cast-in-place piles, diaphragm walls, and foundation reinforcement. Rated power and torque range from 125 to 450 kW, with output torques from 120 to 400 kN·m, the rig can reach a maximum hole diameter of 1.5 to 4 meters and a maximum hole depth of 60 to 90 meters, meeting the requirements of various large-scale foundation construction projects. When constructing large-diameter, ultra-deep bored piles in predominantly sandy strata, geological factors, poor drilling slurry performance, and improper technical measures can cause the drill to become immobilized within the hole for extended periods, leading to drill jams. If drill jams persist and remain unresolved, they can lead to hole wall collapse and potentially cause drill burial accidents. Conventional measures to deal with stuck or buried drill bits include: first, repeatedly lifting and lowering the drill bit, and rotating it in forward and reverse cycles; second, using underwater cutting and reverse circulation methods to remove collapsed objects; and third, using a crane to forcefully lift the drill bit.
[0003] Although traditional treatment measures can solve the problems of stuck and buried drill, they have limitations when the drill tool is located at a deep position. In addition, the torque increases abnormally during the lifting and lowering of the drilling rig, the pump pressure rises, and even the pump is blocked. Utility Model Content
[0004] The utility model aims to provide a drill stuck release structure for a rotary drilling rig, aiming to solve the technical problem that when the drill tool of the rotary drilling rig is stuck at a deep position, the existing treatment measures are limited and cannot be released in time.
[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is to provide a drill stuck release structure for a rotary drilling rig, comprising:
[0006] A rotary drilling rig comprises a trapped power head body, a hydraulic motor, a drill bit and a drill rod, wherein the hydraulic motor is connected to the trapped power head body, the hydraulic motor is used to provide power to the trapped power head body, the trapped power head body is connected to the drill rod, the drill rod is connected to the drill bit, the trapped power head body is used to drive the drill rod to move, and the drill rod drives the drill bit to move during movement, and the hydraulic motor is connected to a plurality of first oil circuit joints;
[0007] A rescue rotary drilling rig, comprising a rescue power head body and a plurality of second oil circuit joints connected to the rescue rotary drilling rig, wherein the number of the first oil circuit joints is the same as the number of the second oil circuit joints;
[0008] A plurality of external oil pipes, both ends of which are connected to the plurality of first oil circuit joints and the plurality of second oil circuit joints in a one-to-one correspondence;
[0009] Wherein, the rescue rotary drilling rig is used to provide power to the hydraulic motor through multiple external oil pipes to increase the rotational torque of the trapped power head body.
[0010] In a possible implementation, the rotational torque of the rescue power head body of the rescue rotary drilling rig is greater than the rotational torque of the trapped power head body.
[0011] In one possible implementation, the rotary drilling rig is electrically connected to a torque sensor, which is used to monitor the rotational torque of the trapped power head body. The torque sensor is electrically connected to a display, which is used to display the rotational torque information of the trapped power head body. The rotary drilling rig includes a central console, which is electrically connected to the torque sensor and the alarm. The central console includes a PLC controller, and the PLC controller is provided with a torque threshold. When the torque monitored by the torque sensor is greater than or equal to the torque threshold, the central console instructs the alarm to send an alarm signal.
[0012] In a possible implementation, the center position of the bottom end of the trapped power head body is connected to the upper end of the drill rod, and the axial direction of the trapped power head body is arranged to coincide with the axial direction of the drill rod.
[0013] In one possible implementation, an electric rotary table is provided at the bottom end of the trapped power head body surrounding the upper end of the drill rod, the middle part of the electric rotary table is hollow, the drill rod is passed through the electric rotary table, the bottom end of the electric rotary table has circumferential rotation freedom, the electric rotary table is electrically connected to the central control console of the rotary drilling rig, and the central control console has a control module suitable for controlling the rotation operation of the electric rotary table.
[0014] In one possible implementation, the upper ends of multiple telescopic rods are evenly distributed along the circumference of the bottom end of the electric rotary table. The telescopic rods are arranged in a circle and surround the drill rod. The axial direction of the telescopic rods is parallel to the axial direction of the drill rod. The lower ends of the telescopic rods are used to insert into the soil outside the drill bit. The multiple telescopic rods are rotated with the help of the electric rotary table to cut the soil so that the drill bit can be separated from the soil.
[0015] In a possible implementation, the diameter of the circle axially enclosed by the multiple telescopic rods is larger than the outer diameter of the drill bit.
[0016] In one possible implementation, a blade is connected to the lower end of the telescopic rod. By controlling the extension and retraction of the telescopic rod, the blade is used to insert into the soil outside the drill bit. The multiple blades are used to cut the soil with the help of the rotation of the electric rotary table to separate the drill bit from the soil.
[0017] In a possible implementation, the telescopic rod is an electric telescopic rod, the electric telescopic rod is electrically connected to the center console, and the center console has a telescopic control module for controlling the telescopic operation of the electric telescopic rod.
[0018] In a possible implementation, the lower end of the telescopic rod is detachably connected to a pointed structure, the upper end of the pointed structure is connected to the lower end of the telescopic rod, the lower end is pointed and is used to be inserted into the soil.
[0019] The beneficial effects of the drill stuck and rescue structure of a rotary drilling rig provided by the utility model are as follows: compared with the prior art, the drill stuck and rescue structure of a rotary drilling rig provided by the utility model comprises a rotary drilling rig, a rescue rotary drilling rig and a plurality of external oil pipes, the rotary drilling rig comprises a trapped power head body, a hydraulic motor, a drill bit and a drill rod, the hydraulic motor is connected to the trapped power head body, the hydraulic motor is used to provide power to the trapped power head body, the trapped power head body is connected to the drill rod, the drill rod is connected to the drill bit, the trapped power head body is used to drive the drill rod to move, and the drill rod drives the drill bit to move during movement, and the hydraulic motor is connected to a plurality of first oil circuit joints; the rescue rotary drilling rig comprises a rescue The power head body and multiple second oil circuit joints connected to the rescue rotary drilling rig, the number of the first oil circuit joints is the same as the number of the second oil circuit joints; the two ends of multiple external oil pipes are respectively connected to the multiple first oil circuit joints and the multiple second oil circuit joints in a one-to-one manner; wherein, the rescue rotary drilling rig is used to provide power to the hydraulic motor through multiple external oil pipes to increase the rotational torque of the trapped power head body, which solves the technical problem that when the drill bit is located deep after the rotary drilling rig is stuck, the existing treatment measures are limited and cannot be rescued in time. It has the technical effect of being able to provide power to the trapped power head body, being easy to rescue, not being restricted by spatial conditions, and having high rescue efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0021] Figure 1 A schematic structural diagram of a drill stuck release structure for a rotary drilling rig provided by an embodiment of the utility model;
[0022] Figure 2A schematic structural diagram of a stuck drill head and a rescue drill head before they are connected, provided by an embodiment of the present invention;
[0023] Figure 3 A schematic diagram of the main structure of a stuck power head body of a rotary drilling rig stuck drill release structure provided by another embodiment of the present invention;
[0024] Figure 4 This is a schematic diagram of the main structure of a trapped power head body of a stuck drill release structure for a rotary drilling rig provided by another embodiment of the present invention.
[0025] Description of reference numerals:
[0026] 1. Rescue the power head body; 11. Second oil circuit connector; 2. Trapped power head body; 3. Hydraulic motor; 31. First oil circuit connector; 4. External oil pipe; 5. Drill rod; 6. Drill bit; 7. Center console; 8. Electric rotary table; 9. Telescopic rod; 91. Pointed structure; 10. Blade. DETAILED DESCRIPTION
[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.
[0028] Please also refer to Figures 1 to 4 The present invention provides a rotary drilling rig drill stuck release structure. The rotary drilling rig drill stuck release structure includes a rotary drilling rig, a rescue rotary drilling rig and multiple external oil pipes 4. The rotary drilling rig includes a trapped power head body 2, a hydraulic motor 3, a drill bit 6 and a drill rod 5. The hydraulic motor 3 is connected to the trapped power head body 2. The hydraulic motor 3 is used to provide power to the trapped power head body 2. The trapped power head body 2 is connected to the drill rod 5. The drill rod 5 is connected to the drill bit 6. The trapped power head body 2 is used to drive the drill rod 5 to move. The drill rod 5 drives the drill bit 6 to move during movement. The hydraulic motor 3 is connected to multiple first oil circuit joints 31; the rescue rotary drilling rig includes a rescue power head body 1 and multiple second oil circuit joints 11 connected to the rescue rotary drilling rig, and the number of first oil circuit joints 31 is the same as the number of second oil circuit joints 11; multiple external oil pipes 4 are connected to the multiple first oil circuit joints 31 and the multiple second oil circuit joints 11 at both ends in a one-to-one correspondence; wherein the rescue rotary drilling rig is used to provide power to the hydraulic motor 3 through the multiple external oil pipes 4 to increase the rotational torque of the trapped power head body 2.
[0029] The utility model provides a rotary drilling rig stuck drill release structure. Compared with the existing technology, a plurality of external oil pipes 4 are used to connect with the hydraulic motor 3, which can provide power to the hydraulic motor 3, thereby solving the technical problem that when the drill bit is located at a deep position after the rotary drilling rig is stuck, the existing treatment measures are limited and cannot be released in time. The utility model has the technical effect of being able to provide power to the trapped power head body 2, making it easy to release, not being restricted by spatial conditions, and having high release efficiency.
[0030] The rescue drilling rig used in this embodiment is more powerful than the rotary drilling rig. This increases the rotational torque of the trapped power unit 2, making it easier to disengage from the soil and escape. Both the rescue drilling rig and the rotary drilling rig are existing products and are capable of rotary drilling operations. In this embodiment, the number of first oil line connectors 31, second oil line connectors 11, and external oil pipes 4 are all five.
[0031] To ensure that escape can be achieved, in some embodiments, see Figures 1 to 4 In a possible implementation, the rotational torque of the rescue power head body 1 for rescuing the rotary drilling rig is greater than the rotational torque of the trapped power head body 2.
[0032] In order to monitor the rotation torque of the trapped power head body 2 in real time, in some embodiments, refer to Figures 1 to 4 The rotary drilling rig is electrically connected to a torque sensor, which is used to monitor the rotational torque of the trapped power head body 2. The torque sensor is electrically connected to a display, which is used to display the rotational torque information of the trapped power head body 2. The rotary drilling rig includes a central console 7, which is electrically connected to the torque sensor and an alarm. The central console 7 includes a PLC controller, which is set with a torque threshold. When the torque monitored by the torque sensor is greater than or equal to the torque threshold, the central console 7 instructs the alarm to issue an alarm signal. If the drill bit 6 is trapped, the rotational torque of the trapped power head body 2 increases. At this time, the PLC controller will determine that it is in a trapped state and send a command to the alarm. The alarm will issue an alarm signal to alert the staff and prevent the drill from being buried. The location of the torque sensor can be reasonably set according to actual conditions. In addition, the display can be set in the cab of the rotary drilling rig so that the staff can see the current torque signal. The PLC controller is a prior art product and can pre-set a torque threshold. This can prevent the rotational torque of the trapped power head body 2 from being too large and damaging the rotary drilling rig.
[0033] In some embodiments, see Figures 1 to 4 The center position of the bottom end of the trapped power head body 2 is connected to the upper end of the drill rod 5, and the axial direction of the trapped power head body 2 is coincident with the axial direction of the drill rod 5, that is, the axial direction of the trapped power head body 2 is coaxial with the axial direction of the drill rod 5, so that the trapped power head body 2 can drive the drill rod 5 to rotate and other movements.
[0034] In some embodiments, see Figures 3 and 4 , an electric rotary table 8 is provided on the upper end of the drill rod 5 surrounding the bottom end of the trapped power head body 2. The middle part of the electric rotary table 8 is hollow, and the drill rod 5 is arranged through the electric rotary table 8. The bottom end of the electric rotary table 8 has circumferential rotation freedom. The electric rotary table 8 is electrically connected to the central control table 7 of the rotary drilling rig. The central control table 7 has a control module suitable for controlling the rotation operation of the electric rotary table 8. The electric rotary table 8 in this embodiment adopts the hollow electric rotary table 8 in the prior art, which is in a circular ring structure. The drill rod 5 is sleeved inside it, which will not affect the normal operation of the drill rod 5. When the drill is stuck, the drill rod 5 is in a stationary state. At this time, the rotation of the electric rotary table 8 can be used to assist in the escape operation. The rotation of the electric rotary table 8 and the rotation of the drill rod 5 (the trapped power head body 2) do not affect each other, and the two are operated alternately.
[0035] In some embodiments, see Figures 3 and 4 The upper ends of multiple telescopic rods 9 are evenly distributed along the circumference of the bottom end of the electric rotary table 8. The telescopic rods 9 are arranged in a circular shape and surround the drill rod 5. The axial directions of the telescopic rods 9 are parallel to the axial direction of the drill rod 5. The lower ends of the telescopic rods 9 are used to insert into the soil outside the drill bit 6. The multiple telescopic rods 9 are rotated by the electric rotary table 8 to cut the soil, thereby freeing the drill bit 6 from the soil. In this embodiment, the number of telescopic rods 9 is two, but three, four, or more telescopic rods 9 can also be provided. By driving the multiple telescopic rods 9 to rotate by the electric rotary table 8, the lower ends of the telescopic rods 9 can cut the soil, separating the drill bit 6 from the soil, thereby achieving the goal of freeing the drill bit 6. It is important to note that the length of the telescopic rods 9 is first adjusted, and then the electric rotary table 8 is driven to rotate. Alternatively, the length can be adjusted while the telescopic rods 9 are rotated, so that the telescopic rods 9 gradually cut downward into the soil, i.e., the depth of the soil cut gradually deepens, thereby gradually achieving the goal of freeing the drill bit 6.
[0036] In some embodiments, see Figures 3 and 4 The diameter of the circle formed axially by the multiple telescopic rods 9 is larger than the outer diameter of the drill bit 6. Since the drill bit 6 has already penetrated deeply into the soil, the outer periphery of the drill bit 6 is surrounded by soil. To separate the drill bit 6 from the soil and escape, the lower ends of the telescopic rods 9 cut into the soil near the drill bit 6. This cut creates a circular shape, separating the drill bit 6 from the soil. The operating principle of the multiple telescopic rods 9 in this embodiment is similar to that of a milling cutter used in a workshop.
[0037] In order to improve the cutting efficiency of the telescopic rod 9 and the soil, in some embodiments, refer to Figures 3 and 4The lower end of the telescopic rod 9 is connected to a blade 10. By controlling the extension and retraction of the telescopic rod 9, the blade 10 is inserted into the soil outside the drill bit 6. The multiple blades 10 are used to cut the soil with the help of the rotation of the electric rotary table 8, thereby freeing the drill bit 6 from the soil. The blade 10 is an elongated structure, with its length along the axial direction of the telescopic rod 9. This allows the blade 10 to cut the soil efficiently, thus improving the efficiency of the drill bit 6 in removing the soil. During the rotary drilling process of the drill bit 6, the blade 10 is positioned above the drill bit 6 and does not affect its normal operation.
[0038] In some embodiments, see Figures 3 and 4 The telescopic rod 9 is an electrically powered telescopic rod, electrically connected to the center console 7. The center console 7 includes a telescopic control module for controlling the telescopic operation of the telescopic rod 9. The telescopic rod is a conventional product. Due to its harsh environment, it is made of high-strength steel to meet the requirements of use and to facilitate the extrication of the drill bit 6.
[0039] In order to enhance the cutting efficiency of the lower end of the telescopic rod 9 on the soil, in some embodiments, refer to Figures 3 and 4 The lower end of the telescopic rod 9 is detachably connected to a pointed structure 91. The upper end of the pointed structure 91 is connected to the lower end of the telescopic rod 9. The lower end is pointed and is used to penetrate the soil. When the blade 10 is not connected, the pointed structure 91 can be left connected to the lower end of the telescopic rod 9. When the blade 10 is in use, the pointed structure 91 can be removed. The pointed structure 91 and the blade 10 can be used interchangeably. In this embodiment, the pointed structure 91 has an inverted conical shape, which enables cutting of the soil without affecting or contacting the drill bit 6 during the cutting process.
[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A drill stuck release structure for a rotary drilling rig, characterized in that: include: A rotary drilling rig comprises a trapped power head body, a hydraulic motor, a drill bit and a drill rod, wherein the hydraulic motor is connected to the trapped power head body, the hydraulic motor is used to provide power to the trapped power head body, the trapped power head body is connected to the drill rod, the drill rod is connected to the drill bit, the trapped power head body is used to drive the drill rod to move, and the drill rod drives the drill bit to move during movement, and the hydraulic motor is connected to a plurality of first oil circuit joints; A rescue rotary drilling rig, comprising a rescue power head body and a plurality of second oil circuit joints connected to the rescue rotary drilling rig, wherein the number of the first oil circuit joints is the same as the number of the second oil circuit joints; A plurality of external oil pipes, both ends of which are connected to the plurality of first oil circuit joints and the plurality of second oil circuit joints in a one-to-one correspondence; Wherein, the rescue rotary drilling rig is used to provide power to the hydraulic motor through multiple external oil pipes to increase the rotational torque of the trapped power head body.
2. The drill stuck release structure for rotary drilling rig according to claim 1, characterized in that: The rotational torque of the rescue power head body of the rescue rotary drilling rig is greater than the rotational torque of the trapped power head body.
3. The drill stuck release structure for rotary drilling rig according to claim 1, characterized in that: The rotary drilling rig is electrically connected to a torque sensor, which is used to monitor the rotational torque of the trapped power head body. The torque sensor is electrically connected to a display, which is used to display the rotational torque information of the trapped power head body. The rotary drilling rig includes a central console, which is electrically connected to the torque sensor and the alarm. The central console includes a PLC controller, and the PLC controller is provided with a torque threshold. When the torque monitored by the torque sensor is greater than or equal to the torque threshold, the central console instructs the alarm to send an alarm signal.
4. The drill stuck release structure for rotary drilling rig according to claim 1, characterized in that: The center position of the bottom end of the trapped power head body is connected to the upper end of the drill rod, and the axial direction of the trapped power head body is arranged to coincide with the axial direction of the drill rod.
5. The drill stuck release structure for rotary drilling rig according to claim 4, characterized in that: An electric rotary table is provided at the bottom end of the trapped power head body surrounding the upper end of the drill rod. The middle part of the electric rotary table is hollow, and the drill rod is passed through the electric rotary table. The bottom end of the electric rotary table has circumferential rotation freedom. The electric rotary table is electrically connected to the central control console of the rotary drilling rig, and the central control console has a control module suitable for controlling the rotation operation of the electric rotary table.
6. The drill stuck release structure for rotary drilling rig according to claim 5, characterized in that: The upper ends of multiple telescopic rods are evenly distributed along the circumference of the bottom end of the electric rotary table. The telescopic rods are arranged in a circle and surround the drill rod. The axial direction of the telescopic rods is parallel to the axial direction of the drill rod. The lower ends of the telescopic rods are used to insert into the soil outside the drill bit. The multiple telescopic rods are rotated with the help of the electric rotary table to cut the soil so that the drill bit can be separated from the soil.
7. The drill stuck release structure for rotary drilling rig according to claim 6, characterized in that: The diameter of the circle axially surrounded by the multiple telescopic rods is larger than the outer diameter of the drill bit.
8. The drill stuck release structure for rotary drilling rig according to claim 6, characterized in that: The lower end of the telescopic rod is connected to a blade. By controlling the extension and retraction of the telescopic rod, the blade is used to insert into the soil outside the drill bit. The multiple blades are used to cut the soil with the help of the rotation of the electric rotary table to separate the drill bit from the soil.
9. The drill stuck release structure for rotary drilling rig according to claim 6, characterized in that: The telescopic rod is an electric telescopic rod, which is electrically connected to the center console. The center console has a telescopic control module for controlling the telescopic operation of the electric telescopic rod.
10. The drill stuck release structure for rotary drilling rig according to claim 6, characterized in that: The lower end of the telescopic rod is detachably connected to a pointed structure, the upper end of the pointed structure is connected to the lower end of the telescopic rod, the lower end is pointed and is used for inserting into the soil.