Lime pile hole-forming drill rod

Abstract

The utility model provides a lime pile pore-forming drill rod which comprises a drill body, a drill bit and a drill tip, the drill bit is arranged at the bottom of the drill body, and the drill tip is arranged at the bottom of the drill bit. A square groove is formed in the bottom of the drill body, clamping grooves are formed in the two sides of the inner side face of the square groove, and a mounting groove is formed in one side of each clamping groove; a square block is fixedly mounted at the top of the drill bit, and a moving cavity is formed in the square block. According to the lime pile pore-forming drill rod provided by the utility model, the drill body, the square groove, the clamping groove, the drill bit, the square block, the clamping block, the movable plate, the push rod, the drill tip, the threaded rod and other structures are matched with one another, so that when the lime pile pore-forming drill rod is used, the drill bit can be quickly disassembled and assembled only by rotating and disassembling the drill tip; the drill bit replacement process is greatly simplified, the replacement time is shortened, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of lime pile drilling equipment, and in particular to a drill rod for lime pile drilling. Background Technology

[0002] The lime pile method, as an effective technique widely used in the treatment of weak foundations, plays an important role in the field of construction engineering. This method involves driving quicklime piles into the weak foundation, utilizing the properties of quicklime such as water absorption and expansion, heat generation, and ion exchange to compact and reinforce the soil around the piles, providing stable foundation support for various types of buildings.

[0003] In the construction of lime piles, drill rods are an indispensable key piece of equipment. The main function of drill rods is to hammer holes in the ground to create conditions for the subsequent installation of quicklime piles. However, in actual engineering applications, drill bits face severe working environment challenges. During the drilling process, drill bits need to continuously cut and break various types of rock and soil. The long-term high-intensity operation makes them extremely susceptible to wear. Once the drill bit wears down, it will not only reduce drilling efficiency and affect the quality of hole formation, but may also lead to problems such as deviation in pile verticality and substandard hole diameter. In severe cases, it may even affect the stability and bearing capacity of the entire lime pile composite foundation.

[0004] Currently, several solutions have emerged in the market to address the wear problem of drill rods and drill bits. For example, patent application CN216108435U, by installing helical blades on the outer wall of the drill rod and fitting the drill bit onto the lower outer wall of the drill rod, and incorporating a positioning bolt and an internal hexagonal sealing block at the connection between the drill bit and the drill rod, achieves a replaceable drill bit. This design, to a certain extent, solves the problem of needing to replace worn drill bits, avoids a decline in construction efficiency due to prolonged use of drill bits, and allows for the replacement of drill tips based on the soil hardness, effectively protecting construction machinery and enhancing the practicality of compaction pile construction machinery.

[0005] Nevertheless, existing technology still has significant shortcomings in drill bit replacement operations. When replacing a drill bit, users need to use multiple tools and perform a series of relatively complex operations. Specifically, they must first use tools to rotate the internal hexagonal seal block to disengage it from the drill bit, then rotate the locating pin to disengage it from the locating post, drill rod, and drill bit, then rotate the drill bit to disengage the upper connecting pin from the drill rod, and finally remove the drill bit from the drill rod for replacement and maintenance. This series of operations is cumbersome, time-consuming, and labor-intensive, greatly reducing work efficiency.

[0006] Therefore, it is necessary to provide a drill rod for drilling lime piles to solve the above-mentioned technical problems. Utility Model Content

[0007] This utility model provides a drill rod for drilling lime piles, which solves the problem of cumbersome, time-consuming and labor-intensive drill bit replacement operations in the prior art, resulting in low work efficiency.

[0008] To solve the above-mentioned technical problems, this utility model provides a drill rod for drilling lime piles, comprising:

[0009] The drill body, drill bit, and drill tip are provided, wherein the drill bit is disposed at the bottom of the drill body and the drill tip is disposed at the bottom of the drill bit;

[0010] The bottom of the drill body is provided with a square groove, and both sides of the inner side of the square groove are provided with snap-fit ​​grooves, and one side of the snap-fit ​​groove is provided with an installation groove.

[0011] A square block is fixedly installed on the top of the drill bit. A movable cavity is opened inside the square block. Both ends of the inner side of the movable cavity are slidably connected to the locking blocks. A push groove is opened inside the drill bit. A movable plate is slidably connected inside the push groove. A push rod is fixedly installed on the top of the movable plate. The top of the push rod is located between the two locking blocks.

[0012] A threaded rod is fixedly installed on the top of the drill tip. The threaded rod is threaded into the inside of the drill bit, and the top of the threaded rod also abuts against the bottom of the moving plate.

[0013] Preferably, the square block is engaged with the inner side of the square groove, and the engaging block is engaged with the inner side of the engaging groove.

[0014] Preferably, a first elastic element is fixedly installed on one side of the inner side of the mounting groove, and one end of the first elastic element abuts against one end of the snap-fit ​​block.

[0015] Preferably, a second elastic element is fixedly installed at both ends of the top of the movable plate.

[0016] Preferably, the top of the second elastic member is fixedly installed on the top of the inner side of the push groove.

[0017] Preferably, a pile hammer is provided at the top of the drill body.

[0018] Preferably, the drill tip has a through hole inside.

[0019] Compared with related technologies, the lime pile drilling rod provided by this utility model has the following beneficial effects:

[0020] This utility model provides a drill rod for drilling lime piles. The drill rod consists of a drill body, a square groove, a snap-fit ​​groove, a drill bit, a square block, a snap-fit ​​block, a moving plate, a push rod, a drill tip, and a threaded rod, which work together to achieve quick disassembly and installation of the drill bit by simply rotating the drill tip. This greatly simplifies the drill bit replacement process, reduces replacement time, and improves work efficiency. Attached Figure Description

[0021] Figure 1 A schematic diagram of the structure of a first embodiment of a lime pile drilling rod provided by this utility model;

[0022] Figure 2 for Figure 1 The diagram shows a partial cross-sectional structure of the drill bit and drill body.

[0023] Figure 3 for Figure 2 The enlarged schematic diagram of part A shown below;

[0024] Figure 4 This is a schematic diagram of the second embodiment of a lime pile drilling rod provided by this utility model.

[0025] The following are the labels in the diagram: 1. Piling hammer, 2. Drill body, 21. Square groove, 22. Snap-fit ​​groove, 23. Mounting groove, 24. First elastic element, 3. Drill bit, 31. Square block, 32. Moving cavity, 33. Snap-fit ​​block, 34. Push groove, 35. Moving plate, 36. Second elastic element, 37. Push rod, 4. Drill tip, 41. Threaded rod, 5. Through hole. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] First Embodiment

[0028] Please refer to the following: Figure 1 , Figure 2 , Figure 3 ,in, Figure 1 A schematic diagram of the structure of a first embodiment of a lime pile drilling rod provided by this utility model; Figure 2 for Figure 1 The diagram shows a partial cross-sectional structure of the drill bit and drill body. Figure 3 for Figure 2 The enlarged schematic diagram of part A is shown. A drill rod for drilling lime piles includes: a drill body 2, a drill bit 3, and a drill tip 4, wherein the drill bit 3 is disposed at the bottom of the drill body 2, and the drill tip 4 is disposed at the bottom of the drill bit 3;

[0029] The bottom of the drill body 2 is provided with a square groove 21, and both sides of the inner side of the square groove 21 are provided with snap-fit ​​grooves 22, and one side of the snap-fit ​​groove 22 is provided with an installation groove 23.

[0030] A square block 31 is fixedly installed on the top of the drill bit 3. A movable cavity 32 is opened inside the square block 31. Both ends of the inner side of the movable cavity 32 are slidably connected to the locking block 33. A push groove 34 is opened inside the drill bit 3. A movable plate 35 is slidably connected inside the push groove 34. A push rod 37 is fixedly installed on the top of the movable plate 35. The top of the push rod 37 is located between the two locking blocks 33.

[0031] A threaded rod 41 is fixedly installed on the top of the drill tip 4. The threaded rod 41 is threadedly connected to the inside of the drill bit 3, and the top of the threaded rod 41 also abuts against the bottom of the moving plate 35.

[0032] The square block 31 and the square groove 21 are compatible, ensuring that the square block 31 is inserted into the inner side of the square groove 21 during installation. The snap-fit ​​block 33 and the snap-fit ​​groove 22 are compatible, and the top of the snap-fit ​​block 33 is provided with an inclined surface. When the square block 31 is inserted into the inner side of the square groove 21, the snap-fit ​​block 33 can move along the guide of the inclined surface towards the inner side of the moving cavity 32. This facilitates the insertion of the square block 31 into the inner side of the square groove 21.

[0033] The square block 32 is engaged with the inner side of the square groove 21, and the engaging block 33 is engaged with the inner side of the engaging groove 22.

[0034] A first elastic element 24 is fixedly installed on one side of the inner side of the mounting groove 23, and one end of the first elastic element 24 abuts against one end of the snap-fit ​​block 33.

[0035] The elasticity of the first elastic element 24 always pushes the two locking blocks 33 towards the middle, so that after the push rod 37 moves away from the middle of the two locking blocks 33, the two locking blocks 33 can retract to the inner side of the moving cavity 32, thereby facilitating the user to disassemble the drill bit 3.

[0036] The two ends of the top of the movable plate 35 are fixedly installed with second elastic elements 36.

[0037] The top of the second elastic member 36 is fixedly installed on the top of the inner side of the push groove 34.

[0038] The elasticity of the second elastic element 36 always pushes the moving plate 35 downward, so that after the drill tip 4 is disassembled, the moving plate 35 can automatically move downward under the elastic action of the second elastic element 36.

[0039] A pile hammer 1 is installed on the top of the drill body 2.

[0040] When in use, the pile hammer 1 is connected to an external pile driving device.

[0041] The working principle of the lime pile drilling rod provided by this utility model is as follows:

[0042] When the drill bit 3 needs to be disassembled and replaced, the operator only needs to rotate the drill tip 4, which drives the threaded rod 41 to make a threaded connection inside the drill bit 3. This causes the drill tip 4 to move the threaded rod 41 downward. Since the top of the threaded rod 41 abuts against the bottom of the moving plate 35, as the threaded rod 41 moves downward, the moving plate 35 loses the upward support force of the threaded rod 41. At this time, the second elastic element 36 will push the moving plate 35 downward. At the same time, the moving plate 35 will drive the push rod 37 downward, so that the top of the push rod 37 is away from the middle of the two locking blocks 33. Originally, the top of the push rod 37 was located in the middle of the two locking blocks 33, which played a role in restricting the position of the locking blocks 33. When the push rod 37 moves downward, this restrictive effect disappears. At this time, due to the elasticity of the first elastic element 24, the locking block 33 will be pushed out of the locking groove 22. At this time, the user can take out the square block 31 from the inner side of the square groove 21, thereby disassembling the drill bit 3.

[0043] Compared with related technologies, the lime pile drilling rod provided by this utility model has the following beneficial effects:

[0044] The drill bit 3 is quickly disassembled and installed by means of the drill body 2, square groove 21, snap-fit ​​groove 22, drill bit 3, square block 31, snap-fit ​​block 33, moving plate 35, push rod 37, drill tip 4 and threaded rod 41, etc. The drill bit 3 is quickly disassembled and installed by simply rotating the drill tip 4 during use. This greatly simplifies the drill bit replacement process, reduces replacement time and improves work efficiency.

[0045] Second Embodiment

[0046] Please refer to the following: Figure 4 Based on the first embodiment of this application which provides a drill rod for drilling lime piles, the second embodiment of this application proposes another drill rod for drilling lime piles. The second embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the separate implementation of the first embodiment.

[0047] Specifically, the second embodiment of this application provides a different type of lime pile drilling rod, wherein the drill tip 4 has a through hole 5 inside.

[0048] The working principle of the lime pile drilling rod provided by this utility model is as follows:

[0049] When it is necessary to disassemble the drill tip 4, the user can insert the auxiliary rod into the inner side of the through hole 5, and then rotate the auxiliary rod, so that the auxiliary rod drives the drill tip 4 to rotate, causing the threaded rod 41 to be threaded inside the drill bit 3, and then the drill tip 4 can be disassembled.

[0050] Compared with related technologies, the lime pile drilling rod provided by this utility model has the following beneficial effects:

[0051] By creating a through hole 5 inside the drill tip 4, it is easier for the user to rotate and disassemble the drill tip 4, making the operation convenient and quick.

[0052] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A drill rod for drilling lime piles, characterized in that, include: The drill body, drill bit, and drill tip are provided, wherein the drill bit is disposed at the bottom of the drill body and the drill tip is disposed at the bottom of the drill bit; The bottom of the drill body is provided with a square groove, and both sides of the inner side of the square groove are provided with snap-fit ​​grooves. One side of the snap-fit ​​groove is provided with an installation groove. A square block is fixedly installed on the top of the drill bit. A movable cavity is opened inside the square block. Both ends of the inner side of the movable cavity are slidably connected to the locking blocks. A push groove is opened inside the drill bit. A movable plate is slidably connected inside the push groove. A push rod is fixedly installed on the top of the movable plate. The top of the push rod is located between the two locking blocks. A threaded rod is fixedly installed on the top of the drill tip. The threaded rod is threaded into the inside of the drill bit, and the top of the threaded rod also abuts against the bottom of the moving plate.

2. The drill rod for drilling lime piles according to claim 1, characterized in that, The square block is engaged with the inner side of the square groove, and the engaging block is engaged with the inner side of the engaging groove.

3. A drill rod for drilling lime piles according to claim 2, characterized in that, A first elastic element is fixedly installed on one side of the inner side of the mounting groove, and one end of the first elastic element abuts against one end of the snap-fit ​​block.

4. A drill rod for drilling lime piles according to claim 1, characterized in that, The top of the movable plate is fixedly installed with a second elastic element at both ends.

5. A drill rod for drilling lime piles according to claim 4, characterized in that, The top of the second elastic member is fixedly installed on the top of the inner side of the push groove.

6. A drill rod for drilling lime piles according to claim 1, characterized in that, A pile hammer is installed at the top of the drill body.

7. A drill rod for drilling lime piles according to claim 1, characterized in that, The drill tip has a through hole inside.

Images