Temporary support for water conservancy engineering geological drilling

Abstract

The utility model relates to the technical field of geological drilling, specifically relates to water conservancy engineering geological drilling temporary support, include: fixed plate, the lower end surface of fixed plate even installation has a plurality of inserting rod, the lower end surface fixed mounting of fixed plate has vibration detection element, vibration detection element electric connection has controller, support subassembly, support subassembly includes even rotation installation in the fixed plate's a plurality of elbow pole, drive subassembly, drive subassembly includes rotation installation in the fixed plate's cylindrical box, the utility model discloses when the drill rod encounters the hard underground obstacle, displacement detection element real -time capture drive shaft and the rotating deviation signal of detection rod, the controller is adjusted the current of first electromagnetic device according to the signal rapidly, makes first magneto rheological fluid by high viscosity solid state change for low viscosity newton fluid, instantaneous cut off the torque transmission of rotary drive piece to the drill rod, effectively avoid the fracture or structural damage of drill rod because of forcibly drilling in.

Description

Technical Field

[0001] This utility model relates to the field of geological drilling technology, specifically to temporary supports for geological drilling in water conservancy projects. Background Technology

[0002] Temporary geological drilling supports are used to support the drilling rig and the area around the borehole during geological drilling, ensuring the stability and safety of the drilling operation. There are many types of existing temporary geological drilling supports. For example, the temporary geological drilling support for water conservancy projects disclosed in patent CN222253840U can be adjusted in height by using a low-speed forward and reverse motor in conjunction with a lead screw pair. The support plate facilitates the installation of drilling equipment. The detachable fixed plates on both sides and the limiting devices installed on the fixed plates can stably connect the column to the ground. The support plate can also be detachably connected to the moving block and connecting block. The whole device is easy to disassemble and install, saving time and effort, and is simple to operate, making it practical.

[0003] However, in geological drilling operations for water conservancy projects, the stability and safety of temporary supports directly affect exploration accuracy and equipment lifespan. Traditional supports mostly employ mechanical rigid structures, facing two major technical bottlenecks;

[0004] When encountering hard underground obstacles, relying on the operator's experience to judge the shutdown can easily lead to drill pipe breakage due to torque overload. Existing displacement detection elements (such as mechanical torque limiters) have significant response delays and cannot achieve millisecond-level power cut-off.

[0005] Ground vibration during drilling can cause the support to sway. Conventional solutions involve passively reducing vibration by reinforcing the base or adding counterweights, but these methods cannot dynamically adjust rigidity according to the vibration frequency. Especially under complex hydrogeological conditions, continuous deviation can easily cause borehole skew, requiring repeated corrections and severely reducing construction efficiency. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the existing technology, this utility model provides a temporary support for geological drilling in water conservancy projects, which can effectively solve the problem that torque overload can easily lead to drill rod breakage in the existing technology.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] This utility model provides a temporary support for geological drilling in water conservancy projects, including:

[0009] A fixed plate, on the lower end face of which multiple insert rods are evenly installed, and a vibration detection element is fixedly installed on the lower end face of which is electrically connected to a controller;

[0010] The support assembly includes a plurality of bent rods that are uniformly rotatably mounted within a fixed plate;

[0011] The drive assembly includes a cylindrical box rotatably mounted inside a fixed plate, a transmission ring plate rotatably mounted inside the cylindrical box, toothed blocks fixedly mounted in a circumferential array on the outer wall of the transmission ring plate, a first magnetorheological fluid and a first electromagnetic device acting on the first magnetorheological fluid filling the cylindrical box, the first electromagnetic device being electrically connected to a controller, and a drill rod disposed below the cylindrical box.

[0012] Preferably, the outer wall of the fixed plate is provided with a rotating groove, and two fixed tanks are symmetrically installed in the rotating groove. A drive shaft is rotatably installed in the fixed tank. Multiple teeth are fixedly installed in a circumferential array on the outer wall of the drive shaft and inside the fixed tank. A rotating seat is rotatably installed at the end of the drive shaft away from the fixed tank. A bent rod is fixedly installed at the lower end of the rotating seat. The fixed tank is filled with a second magnetorheological fluid and a second electromagnetic device that acts on the second magnetorheological fluid. The second electromagnetic device is electrically connected to the controller.

[0013] Preferably, the lower end face of the rotating seat is fixedly connected to the bent rod, a connecting block is fixedly installed on one side of the rotating seat, a fixing block is fixedly installed on the lower end face of the fixing plate, and a spring is fixedly installed between the connecting block and the fixing block.

[0014] Preferably, a fixing frame is fixedly installed on the upper end face of the fixing plate, a rotary drive component is fixedly installed on the upper end face of the fixing frame, a drive shaft is fixedly installed through the fixing frame at the output end of the rotary drive component, the drive shaft is fixedly connected to the transmission ring plate, a transmission frame is fixedly installed on the lower end face of the cylindrical box, a sleeve is fixedly installed on the lower end face of the transmission frame, and the inner wall of the sleeve is threadedly connected to the drill rod.

[0015] Preferably, a detection rod is fixedly installed on the upper end face of the transmission frame, and a displacement detection element is fixedly installed on the lower end face of the drive shaft. The displacement detection element is rotatably connected to the outer wall of the detection rod, and the displacement detection element is electrically connected to the controller.

[0016] The technical solution provided by this utility model has the following advantages compared with the known prior art:

[0017] 1. When the drill rod encounters a hard underground obstacle, the displacement detection element captures the rotational deviation signal between the drive shaft and the detection rod in real time; the controller quickly adjusts the current of the first electromagnetic device based on the signal, so that the first magnetorheological fluid changes from a high-viscosity solid to a low-viscosity Newtonian fluid, instantly cutting off the torque transmission from the rotating drive component to the drill rod, effectively avoiding the breakage or structural damage of the drill rod caused by forced drilling.

[0018] 2. During the drilling process, the ground vibration triggers the vibration detection element at the bottom of the fixed plate. The controller synchronously adjusts the current intensity of the second electromagnetic device, so that the second magnetorheological fluid in the fixed tank is solidified into a rigid state, which strongly locks the rotation of the drive shaft and the tooth head. By rigidly constraining the rotating seat and the bent rod, the shaking of the support caused by the impact of the drill pipe or changes in the formation pressure is significantly suppressed, ensuring the vertical stability of the drilling equipment and the safety of operation. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of the support component of this utility model;

[0022] Figure 3 This is a cross-sectional view of the drive component of this utility model.

[0023] Reference numerals: 1. Fixing plate; 101. Insert rod; 2. Support assembly; 201. Fixing tank; 202. Drive shaft; 203. Tooth head; 204. Rotating seat; 205. Connecting block; 206. Spring; 207. Fixing block; 208. Bent rod; 3. Drive assembly; 301. Fixing frame; 302. Rotary drive component; 303. Cylindrical box; 304. Drive shaft; 305. Transmission ring plate; 306. Tooth block; 307. Transmission frame; 308. Sleeve; 309. Drill rod; 310. Detection rod; 311. Detection element. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0025] The present invention will be further described below with reference to the embodiments.

[0026] Example: Refer to Figures 1 to 3Temporary supports for geological drilling in water conservancy projects, including:

[0027] A fixed plate 1 has multiple insert rods 101 evenly installed on its lower end face. A vibration detection element is fixedly installed on the lower end face of the fixed plate 1. The vibration detection element is electrically connected to a controller. The vibration detection element uses an existing piezoelectric accelerometer. Utilizing the properties of piezoelectric materials, when subjected to vibration, the piezoelectric material generates an electric charge, which is converted into an electrical signal, thereby realizing vibration detection.

[0028] Support assembly 2, which includes a plurality of bent rods 208 uniformly rotatably mounted in the fixed plate 1;

[0029] The drive assembly 3 includes a cylindrical box 303 rotatably mounted in the fixed plate 1, a transmission ring plate 305 rotatably mounted inside the cylindrical box 303, toothed blocks 306 fixedly mounted in a circumferential array on the outer wall of the transmission ring plate 305, a first magnetorheological fluid and a first electromagnetic device acting on the first magnetorheological fluid filling the cylindrical box 303, the first electromagnetic device being electrically connected to the controller, and a drill rod 309 being provided below the cylindrical box 303.

[0030] Reference Figure 2 The outer wall of the fixed plate 1 has a rotating groove, and two fixed tanks 201 are symmetrically installed in the rotating groove. A drive shaft 202 is rotatably installed in the fixed tank 201. Multiple teeth 203 are fixedly installed in a circumferential array on the outer wall of the drive shaft 202 and inside the fixed tank 201. A rotating seat 204 is rotatably installed at the end of the drive shaft 202 away from the fixed tank 201. A bent rod 208 is fixedly installed at the lower end of the rotating seat 204. When the controller fails, the magnetorheological fluid automatically recovers to the Newtonian fluid state under zero magnetic field. Drill rod 3 09 can be manually retracted. The support maintains basic stability through the mechanical self-locking of spring 206 and bent rod 208 to prevent instantaneous collapse. The fixed tank 201 is filled with a second magnetorheological fluid and a second electromagnetic device acting on the second magnetorheological fluid. The second electromagnetic device is electrically connected to the controller. The first magnetorheological fluid (used for torque transmission) uses a silicone oil-based carrier, and the second magnetorheological fluid (used for shock resistance) uses a synthetic hydrocarbon-based carrier. The rheological properties remain stable in the ranges of -40℃ to 150℃ and -30℃ to 120℃, respectively.

[0031] Reference Figure 3 The lower end face of the rotating seat 204 is fixedly connected to the bent rod 208. A connecting block 205 is fixedly installed on one side of the rotating seat 204. A fixing block 207 is fixedly installed on the lower end face of the fixing plate 1. A spring 206 is fixedly installed between the connecting block 205 and the fixing block 207.

[0032] Reference Figure 3A fixing frame 301 is fixedly installed on the upper end face of the fixing plate 1. A rotary drive component 302 is fixedly installed on the upper end face of the fixing frame 301. A drive shaft 304 is fixedly installed through the fixing frame 301 at the output end of the rotary drive component 302. The drive shaft 304 is fixedly connected to the transmission ring plate 305. A transmission frame 307 is fixedly installed on the lower end face of the cylindrical box 303. A sleeve 308 is fixedly installed on the lower end face of the transmission frame 307. The inner wall of the sleeve 308 is threadedly connected to the drill rod 309.

[0033] Reference Figure 3 A detection rod 310 is fixedly installed on the upper end face of the transmission frame 307, and a displacement detection element 311 is fixedly installed on the lower end face of the drive shaft 304. By installing an existing displacement sensor, the minute axial or rotational displacement of the drive shaft 304 and the detection rod 310 can be accurately measured. The displacement sensor can detect very small displacement changes, thereby determining whether there is resistance or jamming. The displacement detection element 311 is rotatably connected to the outer wall of the detection rod 310, and the displacement detection element 311 is electrically connected to the controller.

[0034] The working principle of this utility model is as follows:

[0035] The insertion rod 101 is fixed in the soil by pressing the fixing plate 1. The spring 206 supports the rotating seat 204 and the bent rod 208 to maintain an inclined state. During the insertion of the insertion rod 101 into the soil, the bent rod 208 is also inserted obliquely into the soil to support the fixing plate 1 and the drive assembly 3. By opening the rotation drive component 302, the drive shaft 304 and the transmission ring plate 305 are driven to rotate. The transmission ring plate 305 drives the toothed block 306 to move on the inner wall of the cylindrical box 303. At this time, the controller controls the voltage input to the first electromagnetic device, so that the first electromagnetic device... The device generates magnetic force, which acts on the first magnetorheological fluid, causing the fluid to change from a low-viscosity Newtonian fluid to a high-viscosity solid for rigid transmission. This causes the toothed block 306 to rotate, simultaneously rotating the cylindrical box 303. The cylindrical box 303 then drives the transmission frame 307 and the sleeve 308 to rotate synchronously. The sleeve 308 engages with the drill rod 309, causing the drill rod 309 to rise and fall within its inner wall, driving it to drill into the soil for geological exploration. When the drill rod 309 encounters hard objects in the soil, such as rocks or other impurities, the drill... The rotation of rod 309 will be hindered. During the process of the sleeve 308 driving the detection rod 310 to rotate coaxially with the drive shaft 304, the detection rod 310 will have a small rotational deviation from the drive shaft 304 due to the obstruction of drill rod 309. Although the tooth block 306 drives the cylindrical box 303 to rotate through the first magnetorheological fluid, due to the limitation of the viscosity adjustment of the first magnetorheological fluid, the tooth block 306 cannot mechanically control the rotation of the cylindrical box 303 through the first magnetorheological fluid (high viscosity solid rigid transmission will still cause the drive shaft 304 to rotate when the drill rod 309 is obstructed). A slight rotational deviation occurs, which causes the detection rod 310 and the drive shaft 304 to rotate synchronously. The detection element 311 detects this deviation and generates a corresponding electrical signal. The controller controls the voltage input to the first electromagnetic device through the generated electrical signal, causing the first magnetorheological fluid to change from a high-viscosity solid to a low-viscosity Newtonian fluid. This prevents the transmission force of the drive shaft 304 from being transmitted to the sleeve 308, thus stopping the drive of the drill rod 309 to descend and preventing damage to the drill rod 309 when it is obstructed.

[0036] When the drill rod 309 is driven into the soil, deeper boreholes need to support more weight and be able to effectively cope with changes in underground pressure. Otherwise, vibrations will occur during drilling. The vibration detection element will generate a corresponding electrical signal. The controller controls the voltage input to the second electromagnetic device through the generated electrical signal. The magnetic force generated by the second electromagnetic device will act on the second magnetorheological fluid, preventing the drive shaft 202 and the tooth 203 from rotating inside the fixed tank 201. The rotating seat 204 is then fixed between the fixed tanks 201, reducing the negative impact of vibration on the fixed plate 1.

[0037] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model 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 will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. A temporary support for geological drilling in water conservancy projects, characterized in that, include: A fixing plate (1) is provided with a plurality of insert rods (101) evenly installed on the lower end face of the fixing plate (1), and a vibration detection element is fixedly installed on the lower end face of the fixing plate (1), and the vibration detection element is electrically connected to a controller. Support assembly (2), the support assembly (2) includes a plurality of bent rods (208) uniformly rotatably installed in the fixed plate (1); The drive assembly (3) includes a cylindrical box (303) rotatably mounted in a fixed plate (1), a transmission ring plate (305) rotatably mounted in the cylindrical box (303), tooth blocks (306) fixedly mounted on the outer wall of the transmission ring plate (305) in a circumferential array, the cylindrical box (303) being filled with a first magnetorheological fluid and a first electromagnetic device acting on the first magnetorheological fluid, the first electromagnetic device being electrically connected to a controller, and a drill rod (309) being provided below the cylindrical box (303).

2. The hydraulic engineering geological drilling temporary support according to claim 1, characterized in that, The outer wall of the fixed plate (1) is provided with a rotating groove, and two fixed tanks (201) are symmetrically installed in the rotating groove. A drive shaft (202) is rotatably installed in the fixed tank (201). Multiple teeth (203) are fixedly installed in a circumferential array on the outer wall of the drive shaft (202) and in the fixed tank (201). A rotating seat (204) is rotatably installed at the end of the drive shaft (202) away from the fixed tank (201). A bent rod (208) is fixedly installed at the lower end of the rotating seat (204). The fixed tank (201) is filled with a second magnetorheological fluid and a second electromagnetic device that acts on the second magnetorheological fluid. The second electromagnetic device is electrically connected to the controller.

3. The hydraulic engineering geological drilling temporary support according to claim 2, characterized in that, The lower end face of the rotating seat (204) is fixedly connected to the bent rod (208). A connecting block (205) is fixedly installed on one side of the rotating seat (204). A fixing block (207) is fixedly installed on the lower end face of the fixing plate (1). A spring (206) is fixedly installed between the connecting block (205) and the fixing block (207).

4. The hydraulic engineering geological drilling temporary support according to claim 3, characterized in that, A fixing frame (301) is fixedly installed on the upper end face of the fixing plate (1). A rotary drive component (302) is fixedly installed on the upper end face of the fixing frame (301). A drive shaft (304) is fixedly installed through the fixing frame (301) at the output end of the rotary drive component (302). The drive shaft (304) is fixedly connected to the transmission ring plate (305). A transmission frame (307) is fixedly installed on the lower end face of the cylindrical box (303). A sleeve (308) is fixedly installed on the lower end face of the transmission frame (307). The inner wall of the sleeve (308) is threadedly connected to the drill rod (309).

5. The hydraulic engineering geological drilling temporary support according to claim 4, characterized in that, A detection rod (310) is fixedly installed on the upper end face of the transmission frame (307), and a displacement detection element (311) is fixedly installed on the lower end face of the drive shaft (304). The displacement detection element (311) is rotatably connected to the outer wall of the detection rod (310), and the displacement detection element (311) is electrically connected to the controller.

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