Hole repairing device and hole repairing method for square pile rotary drilling hole forming

Abstract

The invention relates to the field of roadbed construction equipment, in particular to a hole repairing device and a hole repairing method for square pile rotary drilling and hole forming, and the hole repairing device and the hole repairing method can be conveniently and quickly mounted and dismounted and are further suitable for the construction process that hole drilling and hole repairing are alternately carried out, the hole repairing device comprises a rotary drilling bucket and a trimming drill bit, the rotary drilling bucket is cylindrical, and the trimming drill bit is arranged at the bottom of the rotary drilling bucket; the section, in the horizontal plane direction, of the trimming drill bit is an equilateral triangle, hole trimming tooth edges are arranged on the side edges of three corners of the trimming drill bit, the hole trimming tooth edges extend in the side edge direction and are flush with the two ends of the side edges, and the trimming drill bit and the rotary excavating drilling bucket are coaxially arranged. A rotary excavating drilling bucket connecting end used for being connected with a rotary excavating drilling rod is arranged on the top face of the rotary excavating drilling bucket. The method is particularly suitable for the rotary drilling hole-forming construction process in which the two operation steps of drilling and hole repairing are alternately carried out.

Description

Technical Field

[0001] The invention relates to the field of roadbed construction equipment, in particular to a hole repairing device and a hole repairing method for drilling holes with square piles. Background Art

[0002] Anti-slide piles are piles that penetrate the landslide body and penetrate deep into the sliding bed to support the sliding force of the sliding body and stabilize the slope. Anti-slide piles are suitable for shallow and medium-thick landslides. They are the main measures for anti-slide treatment and can also be used in reinforcement projects such as abutments and tunnels. At present, rectangular anti-slide piles are widely used in landslide slope treatment projects, but they are basically constructed by manual digging. In the existing mechanized construction methods, a rotary drilling rig with a large diameter drill bit is first used to guide the hole, and then a hole repairing device is used as an auxiliary hole-forming device to perform full-section hole repair on the under-dug part. However, the efficiency of a large-diameter rotary drilling bit is slow when guiding the hole, which is particularly obvious under hard rock conditions. In addition, the hole repairing device has a large vibration when performing full-section hole repairing, and the actual workload of the hole repairing device is increased, while affecting the durability of the hole repairing device and increasing the maintenance cost of the hole repairing device in the later stage. There are certain difficulties in the actual operation process.

[0003] The existing anti-slip pile drilling device generally evenly distributes the digging teeth around the circumference of the rotary drilling bucket, and rotates the rotary drilling bucket to realize the rotation of the digging teeth to achieve the hole repair operation. In actual use, if the two operation steps of drilling and hole repair are performed alternately, the installation and disassembly of the above structure will be cumbersome, and thus it cannot meet the construction process requirements of the two operation steps of drilling and hole repairing alternately, which slows down the construction progress. At the same time, due to the size of the rotary drilling bucket, the area that can be processed by the digging teeth is limited, which greatly reduces the construction efficiency of the under-dug part between the drilled holes. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a hole repairing device and a hole repairing method for square pile rotary drilling, which can be easily installed and disassembled and is suitable for a construction process in which drilling and hole repairing are performed alternately.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a hole repairing device for rotary drilling of square piles, comprising a rotary drilling bucket and a trimming drill bit, the rotary drilling bucket is cylindrical, the trimming drill bit is arranged at the bottom of the rotary drilling bucket, the cross-section of the trimming drill bit along the horizontal plane direction is an equilateral triangle, and the sides of the three corners of the trimming drill bit are all provided with hole repairing teeth, the hole repairing teeth are extended along the direction of the side and are flush with the two ends of the side, the trimming drill bit is coaxially arranged with the rotary drilling bucket, and the top surface of the rotary drilling bucket is provided with a rotary drilling bucket connecting end head for connecting to a rotary drilling drill rod.

[0006] Furthermore, the bottom surface of the rotary drilling bucket is inscribed in the top surface of the trimming drill bit.

[0007] Furthermore, the rotary drilling bucket connecting end includes a fixed clamping head arranged on the top surface of the rotary drilling bucket, and a clamping groove for connecting with the rotary drilling drill rod is arranged in the fixed clamping head, and a pin hole is arranged in the horizontal direction in the clamping groove.

[0008] The method for repairing a hole by rotary drilling of a square pile comprises the following steps:

[0009] a. Level and compact the area around the square pile holes to be excavated, and set up temporary drainage ditches around the area;

[0010] b. The construction procedure of square pile holes is as follows: first, the soil drill bucket at the bottom of the rotary drilling rod is used to drill and excavate the drill holes, and the adjacent drill holes are set tangent to each other. Then, the soil drill bucket is removed from the bottom of the rotary drilling rod, and a hole repairing device is set at the bottom of the rotary drilling rod. Then, the hole repairing device is used to repair the hole and then the under-dug parts between the drill holes are dug out and excavated. The above steps are repeated until the bottom of the hole is dug and the square pile hole is completed. Then, the steel bar is set in the square pile hole, and finally, the concrete pouring is completed.

[0011] The beneficial effects of the present invention are as follows: in actual use, after the soil drill bucket at the bottom of the rotary drilling rod is used to drill a hole, the soil drill bucket is removed from the bottom of the rotary drilling rod, and a hole repairing device is set at the bottom of the rotary drilling rod to repair the hole. When repairing the hole, since the hole repairing teeth are extended along the direction of the side and flush with the two ends of the side, it can be ensured that the under-dug parts can be dug out wherever the hole repairing teeth reach, greatly improving the efficiency of soil repair. After completing the staged soil repair, the hole repairing device is removed, and then the soil drill bucket is installed to continue digging downwards and obtain a deeper drilled hole. The present invention is particularly suitable for rotary drilling hole construction processes in which the two operation steps of drilling and hole repairing are performed alternately. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 Schematic diagram of an embodiment of the hole repairing device of the present invention.

[0013] Figure 2 yes Figure 1 Top view of the .

[0014] Figure 3 It is a schematic diagram of the under-drilled part between the drill holes after the soil drill bucket drill obtains the drill hole.

[0015] The markings in the figure are: a fixed clamping head 1, a pin hole 2, a rotary drilling bucket 3, a trimming drill bit 4, a trimming tooth edge 41, a drilled hole 5, and an underdrilled portion 6. DETAILED DESCRIPTION

[0016] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0017] like Figure 1 , Figure 2 The figure shows a real-time example of a hole repairing device for drilling a hole in a square pile. The trimming drill bit 4 is a triangular prism structure, and the cross section of the trimming drill bit 4 along the horizontal plane is an equilateral triangle. The rotary drilling bucket 3 is a cylindrical structure, and the top surface of the trimming drill bit 4 is fixedly connected to the bottom surface of the rotary drilling bucket 3. The sides of the three corners of the trimming drill bit 4 extend in the vertical direction, and the sides of the three corners of the trimming drill bit 4 are provided with a hole repairing tooth edge 41, which also extends in the vertical direction. When the trimming drill bit 4 rotates around the axis, the hole repairing tooth edge 41 rotates and digs out the under-dug part 6 to realize the hole repairing operation. The side wall of the rotary drilling bucket 3 can be provided with a corresponding soil taking channel, and the soil dug by the hole repairing tooth edge 41 during the hole repairing process can be promptly discharged through the soil taking channel on the side wall of the rotary drilling bucket 3.

[0018] Among them, the bottom surface of the rotary drilling bucket 3 is inscribed on the top surface of the trimming drill bit 4, such as Figure 2 As shown, under the premise of ensuring the connection stability between the bottom surface of the rotary drilling bucket 3 and the top surface of the trimming drill bit 4, the interference of the side of the rotary drilling bucket 3 on the working area when the trimming drill bit 4 rotates is reduced. The top surface of the rotary drilling bucket 3 is provided with a fixed clamp 1, and a clamping groove for connecting with the rotary drilling rod is provided in the fixed clamp 1, and a latch hole 2 is provided in the horizontal direction in the clamping groove. In actual use, when the rotary drilling rod needs to be installed, the bottom of the rotary drilling rod is set in the clamping groove of the fixed clamp 1, and then the latch is inserted into the latch hole 2 and passed through the hole at the bottom of the rotary drilling rod, and then the bottom of the rotary drilling rod is fixedly set in the clamping groove of the fixed clamp 1 through the latch. When the drilling device needs to be removed later to replace the soil drilling bucket for the next step of drilling, the soil drilling bucket can also be set at the bottom of the rotary drilling rod through a similar latch structure, so that the alternation between the drilling operation of the drilling hole 5 and the drilling operation of the under-drilled part 6 is smoother and more reliable.

[0019] As for the specific construction steps, it mainly includes the following steps: a. Level and compact the surrounding area of ​​the square pile hole to be excavated, and set up temporary drainage ditches around the area; b. The construction procedure of the square pile hole is as follows: first, use the soil drill bucket at the bottom of the rotary drilling rod to drill the drill hole 5 and excavate the earth, and the adjacent drill holes 5 are set tangent to each other, then remove the soil drill bucket from the bottom of the rotary drilling rod, and set the hole repairing device at the bottom of the rotary drilling rod, then use the hole repairing device to repair the hole and then dig out the under-dug part 6 between the drill holes 5 and excavate the earth; repeat the above steps until the bottom of the hole is dug until the square pile hole is completed, then complete the steel bar setting in the square pile hole, and finally complete the concrete pouring.

[0020] by Figure 3 For the embodiment shown, the diameter of the anti-sliding pile to be obtained is 4.5m×3m. First, a soil drilling bucket with an outer diameter of 1.5m is used to guide the hole and extract soil in the forward direction to obtain a drill hole 5. Then, a soil drilling bucket with an outer diameter of 1.5m is used to guide the hole and extract soil in the forward direction to obtain a drill hole 5. Figure 1 and Figure 2The hole repairing device shown is Figure 3 The soil of the under-dug part 6 between the six drilled holes 5 is repaired to obtain a 4.5m×3m pile pit for the anti-sliding pile that has not yet been completed. Figure 1 and Figure 2 The hole repairing device shown only needs to operate on the under-dug part 6, that is, only partial hole repair is required, avoiding causing large disturbance to the hole wall of the initially formed drilled hole 5, and ensuring the accuracy and quality of construction. In addition, the structure is fully mechanically formed when in use, and no manual assistance is required for hole repair. It can not only greatly reduce the work intensity when manual participation is involved, increase work efficiency, but also avoid the dangers caused by manual hole repair, improve practicality and safety, and the small soil bucket of the device itself can transport the repaired soil to the outside of the hole, which is convenient and practical, and has strong practicality.

Claims

1. A hole-drilling device for drilling a hole in a square pile, comprising a rotary drilling bucket (3) and a trimming drill bit (4), wherein the rotary drilling bucket (3) is cylindrical and the trimming drill bit (4) is arranged at the bottom of the rotary drilling bucket (3), and is characterized in that: The cross section of the trimming drill bit (4) along the horizontal plane is an equilateral triangle. The sides of the three corners of the trimming drill bit (4) are all provided with hole-trimming tooth edges (41). The hole-trimming tooth edges (41) are extended along the direction of the side and are flush with the two ends of the side. The trimming drill bit (4) is coaxially arranged with the rotary drilling bucket (3). The top surface of the rotary drilling bucket (3) is provided with a rotary drilling bucket connecting end for connecting with a rotary drilling rod.

2. The hole repairing device for drilling holes with square piles as claimed in claim 1, characterized in that: The bottom surface of the rotary drilling bucket (3) is inscribed on the top surface of the trimming drill bit (4).

3. The hole repairing device for drilling a hole with a square pile according to claim 2, characterized in that: The rotary drilling bucket connecting end comprises a fixed clamping head (1) arranged on the top surface of the rotary drilling bucket (3), wherein a clamping groove for connecting with a rotary drilling rod is arranged in the fixed clamping head (1), and a pin hole (2) is arranged in the horizontal direction in the clamping groove.

4. A method for repairing a hole formed by rotary drilling of a square pile, comprising the device for repairing a hole formed by rotary drilling of a square pile as claimed in any one of claims 1 to 3, characterized in that: The steps include: a. Level and compact the area around the square pile holes to be excavated, and set up temporary drainage ditches around the area; b. The construction procedure of the square pile hole is as follows: first, the soil drill bucket at the bottom of the rotary drilling rod is used to drill the drill hole (5) and excavate the soil, and the adjacent drill holes (5) are arranged tangent to each other. Then, the soil drill bucket is removed from the bottom of the rotary drilling rod, and a hole repairing device is arranged at the bottom of the rotary drilling rod. Then, the hole repairing device is used to repair the hole and then the under-excavated part (6) between the drill holes (5) is excavated and excavated. The above steps are repeated until the bottom of the hole is dug and the square pile hole is completed. Then, the steel bar is arranged in the square pile hole, and finally, the concrete pouring is completed.

Images