CN220748154U - Long spiral drill bit for construction of long spiral bored pile - Google Patents
Long spiral drill bit for construction of long spiral bored pile Download PDFInfo
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- CN220748154U CN220748154U CN202321316117.1U CN202321316117U CN220748154U CN 220748154 U CN220748154 U CN 220748154U CN 202321316117 U CN202321316117 U CN 202321316117U CN 220748154 U CN220748154 U CN 220748154U
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- 238000010276 construction Methods 0.000 title claims abstract description 25
- 229910045601 alloy Inorganic materials 0.000 claims description 29
- 239000000956 alloy Substances 0.000 claims description 29
- 230000003014 reinforcing effect Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000005553 drilling Methods 0.000 description 21
- 239000002689 soil Substances 0.000 description 16
- 239000011435 rock Substances 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 7
- 238000011065 in-situ storage Methods 0.000 description 7
- 230000008901 benefit Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
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Abstract
The utility model relates to the technical field of drill bits and discloses a long spiral drill bit for long spiral bored pile construction, which solves the problems that the pneumatic down-the-hole hammer is additionally arranged on the conventional long spiral equipment, the manufacturing cost of the pneumatic down-the-hole hammer is high, and the drill bit is frequently replaced.
Description
Technical Field
The utility model belongs to the technical field of drill bits, and particularly relates to a long spiral drill bit for long spiral bored pile construction.
Background
The long spiral bored pile forming process is one kind of pile forming process widely used in China, and is suitable for use in producing viscous soil, silt soil, plain filled soil and sand with medium density.
Unlike conventional bored piles, long auger bored piles are constructed by using an auger drilling apparatus to ensure that the pile can be drilled to the depth required in the design, and concrete is poured under the power of a drill bit and then a reinforcement cage is inserted to form the pile body.
In terms of construction advantages, long auger bored piles have three main advantages. Firstly, the pile-forming agent has good adaptability, can be effectively applied to the soil properties of filled soil, cohesive soil and silt soil, and can smoothly form piles under the soil properties of a flowing layer, soft soil and a sandy pebble layer. Second, the noise in the work progress is very little, can not disturb the people, also need not carry out mud dado simultaneously, environmental protection. Thirdly, the pile tip does not have virtual soil, and the quality problems of diameter shrinkage, pile breakage and hole collapse can be prevented.
In the aspect of construction disadvantages, the main disadvantage of the long spiral cast-in-situ bored pile is that the long spiral cast-in-situ bored pile cannot be put into rock, and the long spiral cast-in-situ pile is not suitable for slightly hard strong weathered rock stratum geology and cannot meet the rock-entering depth requirement of part of drawing requirements due to the limitation of drill bit materials.
Aiming at the advantages and disadvantages, the construction technology based on the long spiral bored pile technology at present, which can meet the requirement of rock entering depth, is a technology of adding a pneumatic down-the-hole hammer head to long spiral equipment, and the combination of the two technologies is used, so that the wide applicability of the long spiral is realized, and meanwhile, the problem that the long spiral cannot enter the rock is solved by utilizing the high-strength down-the-hole hammer head material.
Although the technology of adding the pneumatic down-the-hole hammer to the long spiral equipment can solve the problem that the long spiral cast-in-situ bored pile cannot enter the rock, the pneumatic down-the-hole hammer still has some problems in construction, firstly, because the pneumatic down-the-hole hammer head is made of high-strength alloy steel, the pneumatic down-the-hole hammer head is made of special materials, has higher market price, is high in replacement cost once being worn seriously or broken in the construction process, has longer period and is unfavorable for construction period and economic benefit. Secondly, the pneumatic down-the-hole hammer is suitable for harder stratum geology, and the harder geological conditions are more favorable, so that a plurality of soft soil layers such as cohesive soil are arranged on the upper part, and the drill bit is required to be frequently replaced under the harder stratum geological conditions such as strong weathering, medium weathering and the like on the lower part, thereby influencing the construction period.
Based on the above, a long spiral drill bit for long spiral bored pile construction is designed.
Disclosure of Invention
Aiming at the situation, in order to overcome the defects of the prior art, the utility model provides the long spiral drill bit for the construction of the long spiral bored pile, and the problems that the pneumatic down-the-hole hammer is additionally arranged on the conventional long spiral equipment, the manufacturing cost of the pneumatic down-the-hole hammer is high, and the drill bit is frequently replaced are effectively solved.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the long spiral drill bit for the construction of the long spiral bored pile comprises a drill rod, wherein the lower portion of the drill rod is connected with a mounting seat, a spiral blade is fixedly connected to the outer portion of the drill rod, a plurality of alloy tooth bases are fixedly connected to the surface of the spiral blade uniformly, one end of each alloy tooth base is connected with an alloy tooth, and the bottom end of the drill rod is connected with a cross drill bit through a connecting pin in a rotating mode.
Preferably, the cross drill bit comprises a fixed plate, the lower end of the fixed plate is connected with a cross drill bit, two ends of the edge of the fixed plate are welded with positioning blocks, and one end of one positioning block is connected with a rotating block.
Preferably, the inside hollow groove that link up of seting up of drilling rod, the constant head tank has been seted up to drilling rod bottom edge symmetry, locating piece and constant head tank looks adaptation, and one of them constant head tank one side symmetry welding has the connecting block, and the connecting block lower extreme is connected with the dog, and the pinhole has been seted up in connecting block one end penetration.
Preferably, the alloy teeth are positioned at the lower end of the spiral blade at an angle of 45 degrees.
Preferably, one end of the spiral blade is connected with a reinforcing rib.
Compared with the prior art, the utility model has the beneficial effects that:
(1) According to the utility model, the alloy tooth base is welded on the spiral blade, and then the alloy tooth is installed, so that the construction limitation of a common long spiral cast-in-situ pile for different geological environments is solved, the problem that a common long spiral drill bit cannot drill into a strong weathered rock stratum is solved, and compared with the conventional long spiral cast-in-situ pile which utilizes a pneumatic down-the-hole hammer technology, the device drill bit is suitable for the geology of a harder strong weathered rock stratum, has soft geological conditions such as cohesive soil, sandy soil and the like, increases the selectivity of the long spiral cast-in-situ pile for the geological conditions, greatly reduces the construction cost and the construction period, and is beneficial to the cost control and the construction period control of construction projects;
(2) The alloy teeth at the front end of the device can be welded on site, the processing is convenient, the processing period is short, the replacement is easy, the alloy teeth can be put into use after being processed, the on-site construction period is not influenced, and other large auxiliary equipment is not needed.
Drawings
The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model.
In the drawings:
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is an exploded view of the present utility model;
FIG. 3 is a schematic view of the cross drill bit of the present utility model;
FIG. 4 is a top view of the present utility model;
in the figure: 1. a drill rod; 101. a hollow groove; 102. a positioning groove; 103. a connecting block; 104. a stop block; 105. a pin hole; 2. a mounting base; 3. spiral leaves; 4. alloy tooth base; 5. alloy teeth; 6. a connecting pin; 7. a cross drill; 701. a fixing plate; 702. a cross drill; 703. a positioning block; 704. and rotating the block.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model; all other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
1-4, for convenience of understanding, in order to illustrate, the utility model includes the drilling rod 1, the lower end of the drilling rod 1 is connected with the mount pad 2, the outside fixedly connected with spiral blade 3 of the drilling rod 1, the lower end of the spiral blade 3 is connected with the strengthening rib, can improve the intensity of the spiral blade 3, the surface of the spiral blade 3 is welded with the alloy tooth base 4 evenly, the alloy tooth base 4 can be any suitable shape, in this embodiment, in order to improve the structural solidity, design the alloy tooth base 4 into cylindric, one end of the alloy tooth base 4 is connected with the alloy tooth 5, in order to improve the intensity of the alloy tooth 5, the whole outline of the alloy tooth 5 is designed into the toper; the alloy teeth 5 can be connected at any suitable angle, preferably the alloy teeth 5 are positioned at the upper end of the spiral blade 3 at an angle of 45 degrees; further, in order to improve the drilling strength and efficiency of the alloy tooth 5, the surface of the alloy tooth 5 is provided with a strengthening rib; the upper end of the drill rod 1 is rotatably connected with a cross drill bit 7 through a connecting pin 6.
By welding the alloy tooth base on the spiral blade and then installing the alloy tooth, the construction limitation of the common long spiral drilling bored pile aiming at different geological environments is overcome, the problem that the common long spiral drilling bit cannot drill into a strong weathered rock stratum is solved, and compared with the conventional long spiral drilling bored pile which utilizes a pneumatic down-the-hole hammer technology, the device drilling bit is suitable for the geology of the harder strong weathered rock stratum, has soft geological conditions such as cohesive soil, sandy soil and the like, and increases the selectivity of the long spiral drilling bored pile to the geological conditions.
In the second embodiment, based on the first embodiment, the cross drill 7 includes a fixing plate 701, the outer edge of the fixing plate 701 is adapted to the outer edge of the drill rod 1, the upper end of the fixing plate 701 is connected with a cross drill 702, two ends of the edge of the fixing plate 701 are welded with positioning blocks 703, and one end of one positioning block 703 is connected with a rotating block 704;
a through hollow groove 101 is formed in the drill rod 1 and used for pouring concrete; positioning grooves 102 are symmetrically formed in the edge of the upper end of the drill rod 1, positioning blocks 703 are matched with the positioning grooves 102, a connecting block 103 is symmetrically welded on one side of one positioning groove 102, a stop block 104 is connected to the upper end of the connecting block 103, and a pin hole 105 is formed in one end of the connecting block 103 in a penetrating mode; the turning block 704 can be placed between the two connection blocks 103 and the stopper 104, and the connection pin 6 is connected between the two pin holes 105.
Working principle: when the drilling rod 1 is connected and assembled with a long spiral drilling machine, the cross drill bit 7 is in contact with the ground during drilling, positioning blocks 703 at two ends of the cross drill bit 7 are positioned in positioning grooves 102 on the drilling rod 1, so that the cross drill bit 7 is limited, driving equipment drives the drilling rod 1 and the cross drill bit 7 to rotate and drill downwards during piling spiral drilling, the cross drill bit 7 is positioned at the front end of the drilling rod downwards, soil, hard stones and the like can be broken, and alloy teeth 5 on the surface of the screw blade 3 outside the drilling rod 1 can break hard rock stratum while downwards drills, so that the aim of penetrating is fulfilled; when drilling is finished, the driving equipment drives the device to lift upwards for a certain distance, so that the cross drill bit 7 positioned at the bottom of the device turns downwards around the connecting pin 6 under the action of gravity, and the hollow groove 101 inside the drill rod 1 is communicated and opened, so that concrete pouring is facilitated.
The alloy tooth 5 at the front end of the device can be welded on site, is convenient to process, short in processing period and easy to replace, can be put into use after being processed, does not influence the on-site construction period, and does not need other large auxiliary equipment.
Claims (3)
1. A long auger bit for construction of long auger bored piles, comprising a drill rod (1), characterized in that: the lower part of the drill rod (1) is connected with a mounting seat (2), the outside of the drill rod (1) is fixedly connected with a spiral blade (3) which is positioned at the lower part of the mounting seat (2), a plurality of alloy tooth bases (4) are uniformly and fixedly connected to the surfaces of the spiral blade (3), one end of each alloy tooth base (4) is connected with an alloy tooth (5), and the bottom end of the drill rod (1) is rotationally connected with a cross drill bit (7) through a connecting pin (6); the cross drill (7) comprises a fixed plate (701), wherein the lower end of the fixed plate (701) is connected with a cross drill (702), positioning blocks (703) are welded at two ends of the edge of the fixed plate (701), and one end of one positioning block (703) is connected with a rotating block (704); the drill rod (1) is internally provided with a through hollow groove (101), the edge of the bottom end of the drill rod (1) is symmetrically provided with positioning grooves (102), a positioning block (703) is matched with the positioning grooves (102), one side of one positioning groove (102) is symmetrically welded with a connecting block (103), the lower end of the connecting block (103) is connected with a stop block (104), and one end of the connecting block (103) is penetrated and provided with a pin hole (105).
2. A long auger bit for use in long auger bored pile construction according to claim 1, wherein: the alloy teeth (5) are positioned at the lower ends of the spiral blades (3) at an angle of 45 degrees.
3. A long auger bit for use in long auger bored pile construction according to claim 1, wherein: one end of the spiral blade (3) is connected with a reinforcing rib.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321316117.1U CN220748154U (en) | 2023-05-29 | 2023-05-29 | Long spiral drill bit for construction of long spiral bored pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321316117.1U CN220748154U (en) | 2023-05-29 | 2023-05-29 | Long spiral drill bit for construction of long spiral bored pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220748154U true CN220748154U (en) | 2024-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321316117.1U Active CN220748154U (en) | 2023-05-29 | 2023-05-29 | Long spiral drill bit for construction of long spiral bored pile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220748154U (en) |
-
2023
- 2023-05-29 CN CN202321316117.1U patent/CN220748154U/en active Active
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