Drilling tool of rotary excavating cast-in-place pile machine

Abstract

The utility model relates to the technical field of drilling tools for pile machines, in particular to a drilling tool for a rotary excavating cast-in-place pile machine, which improves the cleaning effect of the drilling tool for the rotary excavating cast-in-place pile machine in a drilling barrel, especially muck adhered to the inner side wall of the drilling barrel, is convenient to quickly discharge the muck in the drilling barrel, and improves the practicability. A first scraping ring is attached to the inner side wall of the drilling barrel, a fixing plate is fixedly installed on the inner side wall of the first scraping ring through a plurality of first supports, a sliding rod is longitudinally and fixedly installed in the middle area of the fixing plate, and a fixing rod is slidably installed at the top end of the sliding rod and fixedly installed at the top end of the interior of the drilling barrel. A second scraping ring is fixedly installed at the bottom end of the sliding rod through a plurality of third supports and attached to the inner side wall of the drilling barrel. A moving mechanism is arranged at the top end of the drill cylinder.

Description

Technical Field

[0001] This utility model relates to the technical field of pile drilling tools, specifically a rotary drilling tool for cast-in-place piles. Background Technology

[0002] Rotary drilling rigs are construction machines suitable for hole-forming operations in building foundation engineering. They are mainly suitable for construction in soil layers such as sand, cohesive soil, and silty soil. They are widely used in various foundation constructions such as cast-in-place piles, continuous walls, and foundation reinforcement. During their construction, drilling tools are used to drill holes in the soil.

[0003] For example, Chinese utility model patent publication number CN220955442U discloses a rotary drilling rig drill bit. This utility model provides a rotary drilling rig drill bit that, by setting a connecting cover unit and a wall-brushing unit on the drill barrel, enables: 1. The rotary drilling rig drill bit to grind and smooth the interlocking parts of the pile through the wall-brushing unit, making the interlocking contact surface smooth, thereby greatly improving the interlocking quality of the pile; 2. The connecting cover unit connects the drill barrel in a unified manner, making the overall structure more stable and robust.

[0004] However, the existing devices have problems with unloading slag due to the slender length of the drill barrel, especially after clay layer construction. The clay adheres to the barrel wall, making it particularly difficult to unload the slag, which in turn makes it difficult to clean the slag and hinders the normal operation of the device. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a rotary drilling tool for cast-in-place piles that improves the efficiency and cleaning effect of the device in cleaning the inside of the drill barrel, especially the soil adhering to the inner wall of the drill barrel, and facilitates the rapid discharge of soil from the inside of the drill barrel, thus improving its practicality.

[0006] This utility model discloses a rotary drilling rig drilling tool, comprising a drill cylinder, a base plate, and multiple drill blocks. The bottom end of the drill cylinder is fixedly connected to the top end of the base plate through a fixing mechanism. Each drill block is fixedly installed at the bottom end of the base plate, and the bottom end of the base plate has multiple first through holes. A first scraper ring is attached to the inner side wall of the drill cylinder. A fixing plate is fixedly installed on the inner side wall of the first scraper ring through multiple first brackets. A sliding rod is longitudinally fixedly installed in the middle area of ​​the fixing plate. A fixing rod is slidably installed at the top end of the sliding rod. The fixing rod is fixedly installed at the top end of the inside of the drill cylinder. A second scraper ring is fixedly installed at the bottom end of the sliding rod through multiple third brackets. The second scraper ring is attached to the inner side wall of the drill cylinder.

[0007] A moving mechanism is installed at the top of the drill barrel. This rotary drilling rig simultaneously rotates the drill barrel, driving the base plate and drill blocks to rotate. The rotating drill blocks contact the soil, thus performing drilling operations. The excavated soil is discharged into the drill barrel through the first through hole for collection. After drilling is completed, the drill barrel and base plate are separated by a fixing mechanism, allowing for maintenance of the base plate and drill blocks. Soil is discharged through the bottom of the drill barrel. The moving mechanism moves the first scraper ring, which in turn moves the second scraper ring synchronously through the transmission of the first support, fixing plate, slide rod, fixing rod, and third support. The second and first scraper rings continuously contact the inner wall of the drill barrel, quickly cleaning the excavated soil adhering to the inner wall. This improves the efficiency and effectiveness of the device in cleaning the inside of the drill barrel, especially the excavated soil adhering to the inner wall, facilitating the rapid discharge of excavated soil from the drill barrel and enhancing its practicality.

[0008] Preferably, the fixing mechanism includes a first support plate, which is fixedly installed on the top of the base plate. A second support plate is fixedly installed on the inner wall of the drill barrel via a third support plate. The third support plate is located between the inner wall of the drill barrel and the outer wall of the second support plate. Multiple fixing screws are screwed onto both the second and first support plates. By screwing the fixing screws onto the first and second support plates, the base plate is fixedly connected to the bottom end of the drill barrel via the first, second, and third support plates, which facilitates the disassembly and replacement of the base plate and the drill block.

[0009] Preferably, the moving mechanism includes a second bracket, which is fixedly installed on the inner wall of the first scraper ring. Each second bracket has a screw rotatably installed at its top end, and the screw is screwed to the top end of the drill barrel. By rotating the screw, the second bracket and the first scraper ring are simultaneously driven to perform longitudinal movement. The first scraper ring contacts the inner wall of the drill barrel, thereby cleaning the slag adhering to the inner wall of the drill barrel.

[0010] Preferably, a support rod is fixedly installed at the bottom of each of the third supports, and multiple auxiliary rods are fixedly installed at the bottom of the support rod. Each auxiliary rod is located directly above each first through hole. The installation of the support rod and the auxiliary rods facilitates the rapid discharge of the slag inside the drill barrel through the first through hole.

[0011] Preferably, a second through hole is fixedly installed at the top of the drill barrel. By installing the second through hole, it is convenient to quickly clean the slag inside the drill barrel and to flush the inner wall of the drill barrel through the second through hole.

[0012] Preferably, multiple auxiliary supports are fixedly installed on the outer side wall of each auxiliary rod. By installing the auxiliary supports, the auxiliary rod can quickly loosen the soil inside the drill barrel, thereby facilitating the rapid discharge of the soil inside the drill barrel through the first through hole.

[0013] Preferably, multiple hooks are fixedly installed at the top of the drill barrel, which facilitates the hoisting and transportation of the drill barrel.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This rotary drilling rig simultaneously rotates the drill barrel, driving the base plate and drill block to rotate. The rotating drill block contacts the soil, thus performing drilling operations. The excavated soil generated during drilling is discharged into the interior of the drill barrel through the first through hole for collection. After drilling is completed, the drill barrel and base plate are separated by a fixing mechanism, allowing for maintenance of the base plate and drill block. Soil is discharged through the bottom of the drill barrel. The first scraper ring is moved by a moving mechanism, and the second scraper ring is moved synchronously through the transmission of the first support, fixing plate, sliding rod, fixing rod, and third support. The second and first scraper rings continuously contact the inner wall of the drill barrel, thus quickly cleaning the excavated soil adhering to the inner wall of the drill barrel. This improves the efficiency and effectiveness of the device in cleaning the interior of the drill barrel, especially the excavated soil adhering to the inner wall, and facilitates the rapid discharge of excavated soil from the inside of the drill barrel, thus improving its practicality. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a schematic cross-sectional view of the present invention.

[0017] Figure 3 This utility model Figure 2 Enlarged structural diagram of section A in the middle;

[0018] Figure 4 This is a schematic diagram of the connection structure of the drill barrel and hook of this utility model.

[0019] The following are labels in the attached diagram: 1. Drill barrel; 2. Base plate; 3. Drill block; 4. First through hole; 5. First scraper ring; 6. First bracket; 7. Fixing plate; 8. Slide rod; 9. Fixing rod; 10. Third bracket; 11. Second scraper ring; 12. First support plate; 13. Second support plate; 14. Third support plate; 15. Fixing screw; 16. Second bracket; 17. Screw; 18. Support rod; 19. Auxiliary rod; 20. Second through hole; 21. Auxiliary bracket; 22. Hook. Detailed Implementation

[0020] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete.

[0021] This utility model discloses a rotary drilling rig drilling tool, comprising a drill cylinder 1, a base plate 2, and multiple drill blocks 3. The bottom end of the drill cylinder 1 is fixedly connected to the top end of the base plate 2 through a fixing mechanism. Each drill block 3 is fixedly installed at the bottom end of the base plate 2. Multiple first through holes 4 are provided at the bottom end of the base plate 2. A first scraper ring 5 is attached to the inner side wall of the drill cylinder 1. A fixing plate 7 is fixedly installed on the inner side wall of the first scraper ring 5 through multiple first brackets 6. A sliding rod 8 is longitudinally fixedly installed in the middle area of ​​the fixing plate 7. A fixing rod 9 is slidably installed at the top end of the sliding rod 8. The fixing rod 9 is fixedly installed at the top end of the inside of the drill cylinder 1. A second scraper ring 11 is fixedly installed at the bottom end of the sliding rod 8 through multiple third brackets 10. The second scraper ring 11 is attached to the inner side wall of the drill cylinder 1.

[0022] A moving mechanism is provided at the top of the drill barrel 1. The fixing mechanism includes a first support plate 12, which is fixedly installed at the top of the base plate 2. A second support plate 13 is fixedly installed on the inner side wall of the drill barrel 1 via a third support plate 14. The third support plate 14 is located between the inner side wall of the drill barrel 1 and the outer side wall of the second support plate 13. Multiple fixing screws 15 are screwed onto both the second support plate 13 and the first support plate 12. The moving mechanism includes a second bracket 16, which is fixedly installed on the inner side wall of the first scraper ring 5. Each second bracket 16 has a screw 17 rotatably mounted on its top end, and the screw 17 is screwed onto the top end of the drill barrel 1. Each third bracket 10 has a support rod 18 fixedly mounted on its bottom end, and multiple auxiliary rods 19 are fixedly mounted on the bottom end of the support rod 18. Each auxiliary rod 19 is located directly above each first through hole 4. A second through hole 20 is fixedly mounted on the top end of the drill barrel 1. Multiple auxiliary brackets 21 are fixedly mounted on the outer side wall of each auxiliary rod 19. Multiple hooks 22 are fixedly mounted on the top end of the drill barrel 1.

[0023] like Figures 1 to 4As shown, this utility model discloses a rotary drilling rig for cast-in-place piles. During operation, the rotating drill barrel 1 simultaneously drives the base plate 2 and drill blocks 3 to rotate. The rotating drill blocks 3 contact the soil, thus performing drilling. Drilling debris is discharged into the drill barrel 1 through the first through hole 4 for collection. After drilling is completed, the base plate 2 is fixedly connected to the bottom end of the drill barrel 1 via fixing screws 15, first support plate 12, and second support plate 13. This facilitates the disassembly and replacement of the base plate 2 and drill blocks 3, enabling maintenance of these components. Soil is discharged through the bottom end of the drill barrel 1. Simultaneously, the rotating screw 17 drives the second support 16 and the first scraper ring 5 to move longitudinally. The first scraper ring 5 connects with the drill... The drill barrel 1 contacts the inner wall of the drill barrel 1, thereby cleaning the soil adhering to the inner wall of the drill barrel 1. The second scraper ring 11 moves synchronously through the transmission of the first support 6, the fixing plate 7, the sliding rod 8, the fixing rod 9, and the third support 10. The second scraper ring 11 and the first scraper ring 5 continuously contact the inner wall of the drill barrel 1, thereby quickly cleaning the soil adhering to the inner wall of the drill barrel 1. The installation of the support rod 18 and the auxiliary rod 19 facilitates the rapid discharge of the soil inside the drill barrel 1 through the first through hole 4. The installation of the auxiliary support 21 facilitates the rapid loosening of the soil inside the drill barrel 1 by the auxiliary rod 19, thereby facilitating the rapid discharge of the soil inside the drill barrel 1 through the first through hole 4. The installation of the second through hole 20 facilitates the flushing of the inner wall of the drill barrel 1.

[0024] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A drill tool of a rotary bored pile machine, comprising a drill barrel (1), a bottom plate (2) and a plurality of drill blocks (3), a bottom end of the drill barrel (1) is fixedly connected with a top end of the bottom plate (2) through a fixing mechanism, each drill block (3) is fixedly installed at a bottom end of the bottom plate (2), and a plurality of first through holes (4) are formed in the bottom end of the bottom plate (2), characterized in that: The inner side wall of the drill cylinder (1) is attached with a first scraping ring (5), the inner side wall of the first scraping ring (5) is fixedly installed with a fixed plate (7) through a plurality of first supports (6), the middle region of the fixed plate (7) is fixedly installed with a sliding rod (8) in the longitudinal direction, the top end of the sliding rod (8) is slidingly installed with a fixed rod (9), the fixed rod (9) is fixedly installed at the inner top end of the drill cylinder (1), the bottom end of the sliding rod (8) is fixedly installed with a second scraping ring (11) through a plurality of third supports (10), and the second scraping ring (11) is attached with the inner side wall of the drill cylinder (1). The top end of the drill cylinder (1) is provided with a moving mechanism.

2. A rotary cast-in-place pile machine drill according to claim 1, characterized in that: The fixing mechanism comprises a first supporting plate (12) fixedly installed at the top end of the bottom plate (2), a second supporting plate (13) fixedly installed on the inner side wall of the drill cylinder (1) through a third supporting plate (14), the third supporting plate (14) being located between the inner side wall of the drill cylinder (1) and the outer side wall of the second supporting plate (13), and a plurality of fixing screws (15) being screwed on the second supporting plate (13) and the first supporting plate (12).

3. A drill tool for a rotary dig-injection pile machine according to claim 1, characterized in that: The moving mechanism comprises a second support (16) fixedly installed on the inner side wall of the first scraping ring (5), and a screw rod (17) is rotatably installed at the top end of each second support (16), and the screw rod (17) is screwed with the top end of the drill cylinder (1).

4. The rotary cast-in-place pile machine drill according to claim 1, characterized in that: The bottom end of each third support (10) is fixedly installed with a supporting rod (18), and the bottom end of the supporting rod (18) is fixedly installed with a plurality of auxiliary rods (19), each auxiliary rod (19) being located directly above each first through hole (4).

5. The cast-in-place pile machine drill according to claim 1, characterized in that: The top end of the drill cylinder (1) is fixedly installed with a second through hole (20).

6. A cast-in-place rotary excavated pile machine drill according to claim 4, characterized in that: The outer side wall of each auxiliary rod (19) is fixedly installed with a plurality of auxiliary supports (21).

7. The cast-in-place pile machine drill according to claim 1, characterized in that: The top end of the drill cylinder (1) is fixedly installed with a plurality of hooks (22).

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