阅读说明：本技术 一种长螺旋方形孔钻杆、钻孔装置及工作方法 (Long spiral square hole drill rod, drilling device and working method ) 是由 马正 王建光 任文 孙义 刘兴隆 张未林 尹清嵩 于 2020-06-10 设计创作，主要内容包括：本发明涉及一种长螺旋方形孔钻杆、钻孔装置及工作方法,包括同轴设置的第一轴段和第二轴段,第一轴段和第二轴段之间设有与其非同轴的第三轴段,第二轴段端部设有破碎组件,第三轴段与第一螺旋叶片的内侧部转动连接,第一螺旋叶片的外侧部与截面为莱洛三角形的第一护筒固定连接,第一轴段设有与第一螺旋叶片旋向相反的第二螺旋叶片,使用本发明的钻杆,能够一次性钻孔成型,工作效率高,劳动强度低。(The invention relates to a long spiral square hole drill rod, a drilling device and a working method, wherein the drill rod comprises a first shaft section and a second shaft section which are coaxially arranged, a third shaft section which is not coaxial with the first shaft section is arranged between the first shaft section and the second shaft section, the end part of the second shaft section is provided with a crushing assembly, the third shaft section is rotatably connected with the inner side part of a first spiral blade, the outer side part of the first spiral blade is fixedly connected with a first protective cylinder with a Lelo triangle-shaped section, and the first shaft section is provided with a second spiral blade with a rotation direction opposite to that of the first spiral blade.)

1. The utility model provides a long spiral quad slit drilling rod, its characterized in that, including first shaft segment and the second shaft segment of coaxial setting, be equipped with between first shaft segment and the second shaft segment rather than the coaxial third shaft segment of non-, second shaft segment tip is equipped with broken subassembly, the third shaft segment rotates with first helical blade's medial part to be connected, first helical blade's outside portion and cross-section are the first section of thick bamboo fixed connection that protects of lai luo triangle-shaped, first shaft segment is equipped with the second helical blade that revolves to the opposite with first helical blade.

2. The rectangular spiral square hole drill rod as claimed in claim 1, wherein a first transition shaft section is provided between the first shaft section and the third shaft section, the axis of the first transition shaft section is arranged at an angle to the axis of the first shaft section, a second transition shaft section is provided between the second shaft section and the third shaft section, and the axis of the second transition shaft section is arranged at an angle to the axis of the third shaft section.

3. The rectangular spiral square hole drill rod as claimed in claim 1, wherein a sleeve is sleeved on the third shaft section, the sleeve can freely rotate around the axis of the third shaft section, and the outer cylindrical surface of the sleeve is fixedly connected with the inner side part of the first spiral blade.

4. A rectangular spiral square-hole drill rod according to claim 3, wherein a sealing member is provided between both ends of the sleeve and the outer peripheral surface of the third shaft section.

5. The drill rod with the long spiral square hole as claimed in claim 1, wherein the crushing assembly comprises a cutter head fixed at the end of the second shaft section, one end face of the cutter head is fixedly connected with the second shaft section, and the other end face of the cutter head is provided with a drill bit.

6. The rectangular-shaped-hole drill rod as claimed in claim 1, wherein the end of the first casing near the crushing assembly is provided with a first soil-taking tooth, and the first soil-taking tooth is arranged at the end of the first helical blade.

7. The rectangular-shaped-hole drill rod as claimed in claim 1, wherein a second protective sleeve is further arranged on the periphery of the first shaft section, and the second protective sleeve is fixedly connected with the outer side part of the second helical blade.

8. The rectangular spiral square hole drill rod as claimed in claim 7, wherein the second casing is provided with a second soil-extracting tooth at an end portion thereof adjacent to the third shaft section, the second soil-extracting tooth being provided at an end portion of the second spiral blade.

9. A drilling apparatus comprising a drilling machine equipped with the long helical square-hole drill rod according to any one of claims 1 to 8.

10. The working method of the drilling device according to claim 9, wherein the drilling machine drives the first shaft section and the second shaft section to rotate around the axes of the first shaft section and the second shaft section along a first direction, the third shaft section rotates around the axes of the first shaft section and the second shaft section, the long spiral square hole drill rod drills into a soil body, the soil body is crushed by the crushing assembly, in the drilling process, the first spiral blade and the first protective cylinder rotate along a second direction opposite to the first direction under the action of soil body friction force, the crushed soil body is conveyed towards the ground direction, the square hole is corrected by the first protective cylinder, and the soil body is conveyed to the ground by the second spiral blade.

Technical Field

The invention relates to the technical field of geotechnical engineering, in particular to a long spiral square hole drill rod, a drilling device and a working method.

Background

The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art.

In engineering, the pile foundation is usually made into a cylindrical shape due to the characteristic that a circular shape is easy to form a hole. In actual engineering, the bearing capacity of the cylindrical pile is smaller than that of a square pile with the same volume when the cylindrical pile is used as a friction pile due to the appearance characteristics, the bending resistance of the cylindrical pile is poor when reinforcement calculation is carried out, and the square pile has great advantages particularly in a large-span structure and a single-pile structure.

The inventor finds that the existing pile forming method of the square pile mainly adopts a mode of improving excavation after manual hole forming or cylindrical pile hole forming, has low efficiency and high labor intensity, and cannot meet the requirement of rapid development of foundation engineering, so that a method for rapidly forming the square hole is urgently needed, and the application of the square pile is popularized.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, and provides a long spiral square hole drill rod which can drill a square hole, improve the working efficiency of square hole construction and reduce the labor intensity.

In order to achieve the purpose, the invention adopts the following technical scheme:

in a first aspect, an embodiment of the invention provides a rectangular spiral square hole drill rod, which comprises a first shaft section and a second shaft section which are coaxially arranged, wherein a third shaft section which is not coaxial with the first shaft section is arranged between the first shaft section and the second shaft section, the end part of the second shaft section is provided with a crushing assembly, the third shaft section is rotatably connected with the inner side part of a first spiral blade, the outer side part of the first spiral blade is fixedly connected with a first protection cylinder with a Lelo triangle section, and the outer shaft surface of the first shaft section is provided with a second spiral blade.

In a second aspect, embodiments of the present invention provide a drilling apparatus comprising a drill rig on which is mounted the slot drill pipe.

In a third aspect, an embodiment of the invention provides a working method of a drilling device, a drilling machine drives a first shaft section and a second shaft section to rotate around the axes of the first shaft section and the second shaft section along a first direction, a third shaft section rotates around the axes of the first shaft section and the second shaft section, a long spiral square hole drill rod drills into a soil body, a crushing assembly crushes the soil body, in the drilling process, a first spiral blade and a first protective cylinder rotate along a second direction opposite to the first direction under the action of soil body friction force to convey the crushed soil body to the ground direction, the square hole is corrected by using the first protective cylinder, and the soil body is conveyed to the ground by using a second spiral blade.

The invention has the beneficial effects that:

according to the long spiral square hole drill rod, through the movement of the first shaft section, the second shaft section and the third shaft section, a soil body can be crushed by the crushing assembly, the first protective cylinder and the first spiral blade can rotate under the action of soil body extrusion and friction force to correct a square hole and convey the crushed soil body upwards, the second spiral blade can convey the soil body to the ground continuously, the square hole is drilled out at one time, and compared with a mode of manual hole forming or circular hole improved excavation, the long spiral square hole drill rod is simple in construction step, high in working efficiency, short in construction period and capable of reducing labor intensity.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.

FIG. 1 is a schematic view of the overall structure of embodiment 1 of the present invention;

FIG. 2 is a schematic view of the invention taken along line A of FIG. 1;

FIG. 3 is a schematic view of the invention taken along line B of FIG. 1;

FIG. 4 is a schematic view of the invention taken along line C of FIG. 1;

FIG. 5 is a schematic view of the structure of a crushing unit in example 1 of the present invention;

the soil cutting machine comprises a machine body, a first shaft section, a second shaft section, a third shaft section, a fourth shaft section, a fifth shaft section, a sixth shaft section, a.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

For convenience of description, the words "up", "down", "left" and "right" in the present invention, if any, merely indicate correspondence with up, down, left and right directions of the drawings themselves, and do not limit the structure, but merely facilitate the description of the invention and simplify the description, rather than indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.

Just as the introduction of background art, current direction hole construction method work efficiency is low, and intensity of labour is high, and to the above-mentioned problem, the application provides a rectangular spiral quad slit drilling rod.

In example 1, which is an exemplary embodiment of the present application, as shown in fig. 1 to 5, a drill rod with a helical rectangular hole includes a rotating shaft, the rotating shaft includes a first shaft segment 1, a second shaft segment 2, and a third shaft segment 3, the third shaft segment is disposed between the first shaft segment and the second shaft segment, the first shaft segment and the second shaft segment are coaxially disposed, the third shaft segment and the first shaft segment and the second shaft segment are non-coaxially disposed, and an axis of the third shaft segment is parallel to axes of the first shaft segment and the second shaft segment. The first shaft section can be connected with the power mechanism and rotates under the driving of the power mechanism, so that the first shaft section and the second shaft section rotate around the axes of the first shaft section and the second shaft section, and the third shaft section rotates around the axes of the first shaft section and the second shaft section.

Be provided with first transition shaft section 4 between first shaft section and the third shaft section, the axis of first transition shaft section is the contained angle setting with the axis of first shaft section, be provided with second transition shaft section 5 between second shaft section and the third shaft section, second transition shaft section axis is the contained angle setting with second shaft section axis.

One end of the second shaft section is integrally connected with the second transition shaft section, and the other end of the second shaft section is fixed with a crushing component which is used for crushing a soil body.

Broken subassembly is including fixing the blade disc 6 at second shaft section end, a side end face and the second shaft section end of blade disc can be dismantled fixedly, and another side end face can be dismantled and be fixed with drill bit 7, the blade disc has three sword tooth 6-1, and the knife tip of three sword tooth is located same circular arc, and the blade disc rotates and to utilize the sword tooth to cut the soil body broken, the sword tooth also can set up two or four or more, can set up according to actual need.

In this embodiment, second shaft section tip can set up the connecting plate, and the second shaft section passes through the connecting plate and the bolt can dismantle fixed connection with the blade disc, the drill bit can set up the connecting plate, and the drill bit passes through the connecting plate and the bolt can dismantle fixed connection with the blade disc.

In the embodiment, the cutter head is used for cutting harder blocks in soil, if the soil to be drilled is soft loose soil, a spiral drill bit or other types of drill bits can be directly installed at the end part of the second shaft section, and the soil is directly dug by the spiral drill bit.

The last sleeve 8 that is connected with of rotation of third shaft section, the both ends of third shaft section are provided with spacing boss 9, and the sleeve setting is between two spacing bosses, and spacing boss is used for preventing that the sleeve from droing from the third shaft section.

The sleeve can be at the axis free rotation of third shaft section peripheral face around the third shaft section, is provided with the ball between sleeve medial surface and the third shaft section lateral surface to fill lubricated medium, make the sleeve can rotate around third shaft section axis, in order to prevent that lubricated medium from leaking from the clearance between sleeve and the third shaft section peripheral face, set up the sealing member between sleeve both ends and third shaft section lateral surface, the sealing member adopts current axle sleeve sealing member, for example mechanical seal or rubber ring etc. as long as satisfy sealed demand can.

The lateral surface of the sleeve is fixedly connected with the inner side of the first helical blade 10, the outer side of the first helical blade is fixedly connected with the inner side of the first protective cylinder 11, the cross section of the first protective cylinder is a Lelo triangle, and the first protective cylinder and the third shaft section are coaxially arranged.

The tip that first protects a section of thick bamboo and is close to broken subassembly is equipped with first tooth 12 that fetches earth, first tooth that fetches earth is fixed at first helical blade's tip, first tooth that fetches earth adopts sawtooth pattern structure, first tip that protects a section of thick bamboo and be close to broken subassembly still is provided with two first teeth 18 that loosen the soil, first tooth that loosen the soil adopts sawtooth pattern blade, its one end and sleeve lateral surface fixed connection for the convenient soil body that loosens the soil upwards transports through first helical blade.

The square hole drilling rod of this embodiment creeps into the in-process at the soil body, because first protecting a section of thick bamboo and first helical blade pass through the sleeve and are connected with the third shaft section rotation, the in-process of drilling, under the effect of the extrusion force and the frictional force of the soil body, first protecting a section of thick bamboo and first helical blade can rotate around the axis of third shaft section, and then revise the drilling hole into the square hole, first helical blade can upwards carry broken soil body simultaneously, during the drilling initial stage, need artifical assistance one-tenth square hole, the lateral wall that makes the pore-forming can provide certain initial frictional force.

And a second helical blade 13 is fixed on the outer axial surface of the first axial section, the rotating direction of the second helical blade is opposite to that of the first helical blade, and the second helical blade can rotate around the axis of the first axial section to continuously convey the crushed soil conveyed by the first helical blade until the crushed soil is conveyed to the ground.

The periphery of first shaft section is provided with the second and protects a section of thick bamboo 14, the second protects a section of thick bamboo and is close to the setting of third shaft section, the second protects a medial surface and second helical blade's outside portion fixed connection, adopts the second to protect a section of thick bamboo, can effectively avoid the excavation eccentric deformation problem that drilling depth increases and leads to.

The tip that the second protects a section of thick bamboo and is close to the third shaft section is provided with second tooth 15 that fetches earth, the second tooth that fetches earth sets up the tip at second helical blade, the second tooth that fetches earth adopts sawtooth pattern structure, the tip that the second protects a section of thick bamboo and is close to the third shaft section still is provided with two second tooth 19 that loosen the soil, the second tooth that loosens the soil adopts sawtooth pattern blade, the lateral surface fixed connection of its one end and first shaft section, the second tooth that loosens the soil is used for loosening the soil, makes things convenient for the soil body to be carried to ground by second helical blade.

By adopting the drill rod of the embodiment, in the process of drilling once, the second protective cylinder can be utilized to correct the drilled hole into the square hole, and the broken soil body is transported to the ground, so that the construction is convenient, the construction period is short, the working efficiency is high, the labor intensity of constructors is reduced, and the drill rod is suitable for drilling the square hole with smaller size.