A drill rod structure for cement mixing pile in saline-alkali area

Abstract

The utility model discloses a drill rod structure for cement mixing pile in saline and alkaline area relates to cement mixing pile technical field, including drill rod body, the inner wall of drill rod body is seted up with recess, the inside of recess is provided with quick detach mechanism, quick detach mechanism includes with recess's the inside fixed connection's electric telescopic handle. The drill rod structure of cement mixing pile of the application through the cooperation of electric telescopic handle, fixed block, sliding block, sliding slot, fixed axle, first spring, buckle and second spring, electric telescopic handle is as power source, and through the retraction drive fixed block back off, and sliding block is guided under fixed axle and along sliding slot steady sliding, and the buffer effect of cooperation first spring, avoid mechanical impact, second spring releases pre -tightening force at this moment, and drive buckle rotates around the hinge point and separates drill bit card slot, realize drill bit automatic unlocking, and the whole process only needs to control electric telescopic handle to be completed, can clean the inside of drill rod, realize can convenient disassembly drill bit.

Description

Technical Field

[0001] This utility model relates to the field of cement mixing pile technology, specifically a drill rod structure for cement mixing piles in saline-alkali areas. Background Technology

[0002] Cement mixing piles are an effective form of soft soil treatment. They use cement as the main curing agent, and a mixing pile machine is used to spray cement into the soil and mix it thoroughly. This causes a series of physical and chemical reactions between the cement and the soil, which hardens the soft soil and improves the foundation strength.

[0003] A search revealed a Chinese patent (CN216839399U) disclosing a drill rod structure for cement mixing piles. The described auger drill bit is movably inserted into the hollow rotating drill rod via a connecting pile column; a buffer spring is fitted onto the exposed lower section of the connecting pile column; and the upper part of the connecting pile column is movably engaged with a lifting groove at the bottom of the hollow rotating drill rod via a limiting component. This design incorporates an automatic mortar flow adjustment device within the traditional cement mixing pile drill rod, automatically adjusting the mortar output based on the soil hardness to ensure the stability of the cement mixing pile, reduce mortar waste, and lower costs.

[0004] While the above-mentioned solutions can automatically adjust the mortar output according to the hardness of the soil layer to ensure the stability of the cement mixing pile, reduce mortar waste, and lower costs, the drill rod structure in the above patents makes it difficult to easily disassemble the drill bit. After use, impurities are easily left inside the drill rod, which can affect the service life of the drill rod. Therefore, we provide a drill rod structure for cement mixing piles in saline-alkali areas to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a drill rod structure for cement mixing piles in saline-alkali areas, so as to solve the problems raised in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a drill rod structure for cement mixing piles in saline-alkali areas, comprising a drill rod body, a groove formed on the inner wall of the drill rod body, a quick-release mechanism provided inside the groove, and the quick-release mechanism comprising an electric telescopic rod fixedly connected to the inside of the groove;

[0007] The telescopic end of the electric telescopic rod is fixedly connected to a fixed block. A sliding block is slidably connected to the inner wall of the fixed block. A groove is formed on the inner wall of the sliding block. A fixed shaft is slidably connected inside the groove. The outer surface of the fixed shaft is fixedly connected to the inner wall of the fixed block. A first spring is fixedly connected to the inner wall of the sliding block. The upper end of the first spring is fixedly connected to the inner wall of the fixed block. A buckle is hinged to one side of the sliding block. A drill bit is engaged at the lower end of the buckle.

[0008] Preferably, a second spring is fixedly connected to the inner side of the buckle, and the end of the second spring away from the buckle is fixedly connected to one side of the sliding block. The second spring is installed between the buckle and the sliding block and can push the buckle to move.

[0009] Preferably, the upper surface of the drill bit is provided with a telescopic mechanism, which includes a fixed frame fixedly connected to the upper surface of the drill bit. A motor is fixedly connected to the inner wall of the fixed frame. Under the action of the telescopic mechanism, the cement inside the drill rod can be controlled to be discharged.

[0010] Preferably, the output shaft of the motor is fixedly connected to a first helical gear, the outer surface of the first helical gear is meshed with a second helical gear, and a rotating cylinder is fixedly connected to the middle of the second helical gear. The motor can drive the first and second helical gears to rotate, so that the piston block can slide up and down on the inner wall of the drill rod.

[0011] Preferably, the interior of the fixed frame is rotatably connected to the outer surface of the rotating cylinder, and a threaded rod is threadedly connected to the inner wall of the rotating cylinder. A piston block is fixedly connected to the upper end of the threaded rod. When the rotating cylinder rotates, the threaded rod installed inside the rotating cylinder can drive the piston block to be adjusted up and down.

[0012] Preferably, a guide rod is fixedly connected to the lower surface of the piston block. The outer surface of the guide rod is slidably connected to the inner wall of the fixed frame. The guide rod passes through the fixed frame. When the piston block slides up and down, the guide rod can guide the piston block and prevent the piston block from rotating.

[0013] Preferably, the inner wall of the drill rod body is provided with a discharge groove, and the interior of the drill rod body is slidably connected to the outer surface of the piston block. When the piston block moves to the discharge groove opening, the cement inside the drill rod can be discharged.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. The drill rod structure of the cement mixing pile of this application uses an electric telescopic rod, a fixed block, a sliding block, a slide groove, a fixed shaft, a first spring, a buckle, and a second spring in combination. The electric telescopic rod serves as a power source, and its retraction drives the fixed block to retract. The sliding block slides smoothly along the slide groove under the guidance of the fixed shaft. With the buffering effect of the first spring, mechanical impact is avoided. At this time, the second spring releases the preload, driving the buckle to rotate around the hinge point and disengage from the drill bit slot, realizing automatic unlocking of the drill bit. The entire process can be completed by controlling the electric telescopic rod, which allows for cleaning of the inside of the drill rod and convenient disassembly of the drill bit.

[0016] 2. The drill rod structure of the cement mixing pile of this application uses a fixed frame, a motor, a first helical gear, a second helical gear, a rotating cylinder, a threaded rod, a piston block, and a guide rod in cooperation. The motor drives the first and second helical gears to rotate, which can drive the rotating cylinder to rotate. The rotating cylinder can push the piston block to adjust up and down, which can control the amount of cement discharged and prevent soil from entering the inner wall of the drill rod. Compared with the traditional mechanical valve control method, it saves cement consumption. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the overall cross-sectional three-dimensional structure of this utility model;

[0019] Figure 3 This is a three-dimensional cross-sectional view of the telescopic mechanism of this utility model;

[0020] Figure 4 This is an exploded three-dimensional structural diagram of the quick-release mechanism of this utility model;

[0021] Figure 5 This is a three-dimensional structural diagram of the electric telescopic pole of this utility model;

[0022] Figure 6 For the present utility model Figure 5 A magnified structural diagram at point A.

[0023] Labels in the diagram: 1. Drill pipe body;

[0024] 2. Telescopic mechanism; 201. Fixed frame; 202. Motor; 203. First helical gear; 204. Second helical gear; 205. Rotating cylinder; 206. Threaded rod; 207. Piston block; 208. Guide rod;

[0025] 3. Quick-release mechanism; 301. Electric telescopic rod; 302. Fixing block; 303. Sliding block; 304. Slide groove; 305. Fixing shaft; 306. First spring; 307. Buckle; 308. Second spring;

[0026] 4. Drill bit; 5. Discharge chute; 6. Groove. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] like Figure 2 As shown, this utility model provides a technical solution for a drill rod structure for cement mixing piles in saline-alkali areas. It includes a drill rod body 1, with a discharge groove 5 on the inner wall of the drill rod body 1. The interior of the drill rod body 1 is slidably connected to the outer surface of a piston block 207. The discharge groove 5 on the drill rod body 1 facilitates the discharge of cement from inside the drill rod body 1. The piston block 207 is installed inside the drill rod body 1 to control the discharge amount. A groove 6 is provided on the inner wall of the drill rod body 1, and a quick-release mechanism 3 is provided inside the groove 6. The quick-release mechanism 3 includes an electric telescopic rod 301 fixedly connected to the interior of the groove 6. The groove 6 inside the drill rod body 1 allows for easy installation of the quick-release mechanism 3. The drill bit 4 can be fixed using the quick-release mechanism 3, and the interior of the drill rod body 1 can be cleaned after removing the drill bit 4.

[0029] like Figure 4 As shown, a fixed block 302 is fixedly connected to the telescopic end of the electric telescopic rod 301. A sliding block 303 is slidably connected to the inner wall of the fixed block 302. A groove 304 is provided on the inner wall of the sliding block 303. A fixed shaft 305 is slidably connected inside the groove 304. The outer surface of the fixed shaft 305 is fixedly connected to the inner wall of the fixed block 302. A first spring 306 is fixedly connected to the inner wall of the sliding block 303. The upper end of the first spring 306 is fixedly connected to the inner wall of the fixed block 302. A buckle 307 is hinged on one side of the sliding block 303. When the drill bit 4 needs to be disassembled, the fixed block 302 can be pushed down by the electric telescopic rod 301. When the fixed block 302 slides down, it can push the sliding block 303 down, thereby releasing the buckles 307 on both sides from fixing the drill bit 4. This allows the drill bit 4 to be disassembled, facilitating the cleaning of the inside of the drill rod body 1 and improving the service life of the drill rod body 1.

[0030] like Figure 1 and Figure 6 As shown, a second spring 308 is fixedly connected to the inner side of the buckle 307. The end of the second spring 308 away from the buckle 307 is fixedly connected to one side of the sliding block 303. The second spring 308 is installed on the buckle 307. Through the tension of the second spring 308 itself, the buckles 307 on both sides can be pulled to fix the drill bit 4. The lower end of the buckle 307 is engaged with the drill bit 4. The upper surface of the drill bit 4 is provided with a telescopic mechanism 2. The telescopic mechanism 2 includes a fixed frame 201 fixedly connected to the upper surface of the drill bit 4.

[0031] like Figure 3As shown, the interior of the fixed frame 201 is rotatably connected to the outer surface of the rotating cylinder 205. A threaded rod 206 is threadedly connected to the inner wall of the rotating cylinder 205, and a piston block 207 is fixedly connected to the upper end of the threaded rod 206. The rotating cylinder 205 is installed inside the fixed frame 201 to prevent the fixed frame 201 from shaking during rotation, thus providing a fixing function. When the rotating cylinder 205 rotates, the threaded rod 206 pushes the piston block 207 to slide up and down. The piston block 207 controls the amount of cement discharged from inside the drill pipe body 1. It can also prevent external cement from entering the interior of the drill pipe body 1. A guide rod 208 is fixedly connected to the lower surface of the piston block 207. The outer surface of the guide rod 208 is slidably connected to the inner wall of the fixed frame 201. The guide rod 208 passes through the fixed frame 201 and is installed on the piston block 207. The guide rod 208 can slide on the inner wall of the fixed frame 201 according to the up and down adjustment of the piston block 207. The guide rod 208 can guide the piston block 207 and prevent the piston block 207 from rotating when sliding up and down, thus playing a guiding role.

[0032] A motor 202 is fixedly connected to the inner wall of the fixed frame 201. The telescopic mechanism 2 is installed on the drill bit 4. When the drill bit 4 is removed, it is convenient to clean the inside of the drill rod body 1, which is less susceptible to cement corrosion and helps to improve the service life of the drill rod body 1. The fixed frame 201 is installed on the drill bit 4 to fix it. The motor 202 is installed on the fixed frame 201 to prevent the motor 202 from shaking during operation. The output shaft of the motor 202 is fixedly connected to a first helical gear 203. A second helical gear 204 meshes with the outer surface of the first helical gear 203. A rotating cylinder 205 is fixedly connected to the middle of the second helical gear 204. When it is necessary to adjust the piston block 207 rubber, the motor 202 drives the first helical gear 203 and the second helical gear 204 to rotate. When the second helical gear 204 rotates, it can drive the rotating cylinder 205 to rotate, thereby driving the piston block 207 to adjust up and down.

[0033] The motor 202 and the electric telescopic pole 301 in this application are common electrical devices in the prior art, and their models or specific structures will not be described in detail in this application.

[0034] Working principle: The electric telescopic rod 301 retracts, causing the fixed block 302 to retract into the groove 6. As the fixed block 302 retracts, the sliding block 303 moves downwards along the fixed shaft 305 within the slide groove 304. The first spring 306 compresses to buffer the mechanical impact. As the sliding block 303 moves downwards, the preload of the second spring 308 pushes the latch 307 to rotate outwards around the hinge point, disengaging it from the slot of the drill bit 4, thus unlocking it. The drill bit 4 separates from the drill rod body 1, allowing for thorough cleaning of the drill rod's interior and preventing salt and alkali corrosion residues from affecting its lifespan. The motor 202 is started, driving the first helical gear 203 to rotate. Through gear meshing, this drives the second helical gear 204 and the rotating cylinder 205 to rotate. The threads on the inner wall of the rotating cylinder 205 push the threaded rod 206 up and down, moving the piston block. Piston block 207 slides inside drill rod body 1, piston block 207 moves down, exposing discharge chute 5. Cement is discharged through discharge chute 5, and the flow rate is adjusted by the position of piston block 207. Piston block 207 moves up to block discharge chute 5, preventing external soil from entering the drill rod. Guide rod 208 moves with piston block 207 and slides within fixed frame 201 to prevent piston block 207 from rotating, ensuring movement stability. Quick-release mechanism 2 enables one-click disassembly of drill bit 4, adapting to the frequent cleaning needs of saline-alkali areas and extending drill rod life. Telescopic mechanism 3 precisely adjusts cement discharge through mechanical transmission, reducing waste and improving foundation treatment quality. The sealing effect of piston block 207 prevents drill rod blockage, especially suitable for saline-alkali soil with high salt content and easy compaction, enabling convenient disassembly of drill bit 4.

[0035] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A drill rod structure for cement mixing piles in saline-alkali areas, comprising a drill rod body (1), characterized in that: The inner wall of the drill rod body (1) is provided with a groove (6), and a quick release mechanism (3) is provided inside the groove (6). The quick release mechanism (3) includes an electric telescopic rod (301) that is fixedly connected to the inside of the groove (6). The telescopic end of the electric telescopic rod (301) is fixedly connected to a fixed block (302). The inner wall of the fixed block (302) is slidably connected to a sliding block (303). The inner wall of the sliding block (303) is provided with a groove (304). The inside of the groove (304) is slidably connected to a fixed shaft (305). The outer surface of the fixed shaft (305) is fixedly connected to the inner wall of the fixed block (302). The inner wall of the sliding block (303) is fixedly connected to a first spring (306). The upper end of the first spring (306) is fixedly connected to the inner wall of the fixed block (302). A buckle (307) is hinged to one side of the sliding block (303). A drill bit (4) is engaged at the lower end of the buckle (307).

2. The drill rod structure for cement mixing piles in saline-alkali areas according to claim 1, characterized in that: A second spring (308) is fixedly connected to the inner side of the buckle (307), and the end of the second spring (308) away from the buckle (307) is fixedly connected to one side of the sliding block (303).

3. The drill rod structure for cement mixing piles in saline-alkali areas according to claim 1, characterized in that: The upper surface of the drill bit (4) is provided with a telescopic mechanism (2), the telescopic mechanism (2) includes a fixed frame (201) fixedly connected to the upper surface of the drill bit (4), and a motor (202) is fixedly connected to the inner wall of the fixed frame (201).

4. The drill rod structure for cement mixing piles in saline-alkali areas according to claim 3, characterized in that: The output shaft of the motor (202) is fixedly connected to a first helical gear (203), and a second helical gear (204) meshes with the outer surface of the first helical gear (203). A rotating cylinder (205) is fixedly connected to the middle part of the second helical gear (204).

5. A drill rod structure for cement mixing piles in saline-alkali areas according to claim 3, characterized in that: The interior of the fixed frame (201) is rotatably connected to the outer surface of the rotating cylinder (205). The inner wall of the rotating cylinder (205) is threaded with a threaded rod (206), and the upper end of the threaded rod (206) is fixedly connected with a piston block (207).

6. A drill rod structure for cement mixing piles in saline-alkali areas according to claim 5, characterized in that: A guide rod (208) is fixedly connected to the lower surface of the piston block (207). The outer surface of the guide rod (208) is slidably connected to the inner wall of the fixed frame (201). The guide rod (208) passes through the fixed frame (201).

7. A drill rod structure for cement mixing piles in saline-alkali areas according to claim 5, characterized in that: The inner wall of the drill rod body (1) is provided with a discharge groove (5), and the interior of the drill rod body (1) is slidably connected to the outer surface of the piston block (207).

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