专利摘要:
A method and an apparatus for producing a support element in the ground are described, a hole being sunk through non-stable ground at least down to the load bearing soil. As a result of a wedge-shaped construction of the drill bit the loosened soil is displaced into the adjacent region of the hole and consequently the area round the hole is compacted. The drill has a circular cylindrical core, which is provided with an outlet opening in the vicinity of the drill bit. Preferably tampable material is filled through the core tube, accompanied by the retraction of the drill. The material is simultaneously tamped with the aid of the drill. The invention has the particular advantage that, in cost effective manner, it is possible to use tampable material from the area immediately surrounding the building site and there is no need for expensive, classified filling material. Tubing of the hole is unnecessary through the use of the core tube.
公开号:SU1595348A3
申请号:SU874202875
申请日:1987-07-16
公开日:1990-09-23
发明作者:Хенн Гюнтер;Штоккер Манфред;Штэтцер Эрвин;Фридрих Конрад;Бауэр Томас
申请人:Бауэр Специалтифбау Гмбх (Фирма);
IPC主号:
专利说明:

Izobreteshge refers to the drilling equipment8, namely, drills for installing the support element in the ground.
The aim of the invention is to increase the efficiency of the drill,
FIG. 1 shows a drill for mounting a support element in the ground, general view; in fig. 2 is a section A-A in FIG. one,
The drill contains a column tube 1 with an open distal end 2, on the side surface of which there is a horseshoe notch 3., a spiral 4z mounted on the outer surface of the core tube 1 ,, and a cutting tip in the form of a blade 5 installed at the exit of the distal end of the column tube t with a cutting blade 6 which extends tangentially from the axis of the core pipe 1 to its side surface at the location of the horseshoe-shaped extruder 3 and is inclined to the said n-horny axis at an angle equal to or less than 90, the Blade 5 turns into iral 4, with its external size equal to the external surface, the spiral of the distal end 2 of the column 1 has a wedge section 7 5 starting from the inner end of the blade 5 and ending on the side surface of the core pipe. When this wedge section 7 is provided with a free front edge 8 ,, one end of which is connected with the inner end of the cutting blade 6 of the blade 5, and the other with the core pipe 1
In the improved version of the drill Sbobod on the front edge of the wedge 8
jj 40 45 d
ka 7 is projected radially, the wedge section 7 itself is made spiral (in this case, the w-Ekn edge of this area forms a spiral 9, which passes into the end edge 11 of the core pipe 1), and the blade 5 has a pitch corresponding to the helix pitch 4, Preferably also the supply of the cutting blade 6. blades 5 teeth 10, In addition, the end edge 11 of the core pipe 1 may have a spiral notch 12, forming at least one cutting tooth 13, parallel to the axis of the core pipe 1, Depending on the strength of the rocks, there may be several teeth. Finally, point 14 connects the inner end of the 6 blade cutting blade.
5 with the end of the free leading edge of the wedge section 7 may lie on the axis of the core pipe 1.
At the end of the core pipe 1, opposite the distal end 2, there is a quick-release lock 15 for connecting the drill to the drill pipes.
(not shown).
A drill for setting the support element in the ground works as follows. .
During drilling, the axial load and torque are transferred to the drill, under the action of which the cutting blade
6 blade 5 cuts the soil, ensuring the deepening of the borehole. In this case, the cutting tooth 13 (or several such teeth) facilitates the work of the cutting blade 6, creating an additional zone of destruction. Separated soil is forced out.
the inclined wedge section 7 to the walls of the well, where the soil particles are rearranged and partially compacted, forming a layer with a sufficient bearing capacity near the walls of the well, and partially move from the blade 5 to the coil 4 and is removed from the well. In soils with insufficient capacity for the rearrangement of particles, Q stresses arise, which also increase the bearing capacity of the soil. Despite the fact that almost the entire area of the outlet of the distal end 2 of the circulating pipe 1 is open, the drill 15 fines are completely forced out to the walls of the well and then to the transporting coil 4 by making a drill with a radially arranged blade 5 and adjacent to its inner 20 wedge section 7. As a result, the internal cavity of the core pipe 1 remains free of cuttings during the drilling process.
After the well reaches 25 of the required depth, a support element is inserted into it. Due to the presence of an open distal end 2 of the core tube 1 and without the open and with a horseshoe cut on the side surface, the cutting tip is made as a blade with a cutting blade installed at the outlet of the distal end of the core tube with a cutting blade tangent from the axis of the core tube to its side the surface at the location of the horseshoe-shaped notch and inclined to the said axis at an angle equal to or less than 90, the blade turning into a spiral, and its external size is equal to the outer radius of the spiral and, at the same time, the distal end of the core pipe has a wedge section starting from the inner end of the blade and ending on the side surface of the core pipe, and the section itself is provided with a free front edge, one end of which is connected to the inner end of the cutting blade of the blade, and with a core tube.
2. The drill according to claim 1, which means that the leading edge of the wedge section is free, pass in the projection in the radial direction.
3. The drill according to claim 1, distinguishes 35
made spiral.
4. The drill according to claim 1, which means that the blade is made in steps corresponding to the step of the helix.
5. Bur in one of the paragraphs. 1-4, in that the cutting blade of the blade is provided with teeth.
f
40
In the last sludge, the creation of a support for the wedge-shaped wedge element is carried out by well-known technologies, including with the lowering into the well a core rod made of steel or concrete (Fig. 2), through the drill without lifting it and disconnecting the cutting tip, which provides a significant simplification of the process of creating a support element in the ground and repeated use of the drill. All this increases the efficiency of the drill.
Invention Formula
1. A drill for installing a support element in the ground, containing a core pipe, a helix mounted on the outer surface of the core pipe, and a cutting tip, so that, in order to increase efficiency in operation, the distal - the ny end of the core tube is made
6.Bur in one of the paragraphs. 1-5, about t. the fact that the end edge of the core pipe and / or the wedge section has a spiral cut and at least
.f one cutting tooth, parallel to the axis of the core tube.
7. Bur in one of the paragraphs. 1-6, about the fact that the point
connecting the inner end of the cutting blade blade with the end of the free front edge of the wedge section of the tape on the axis of the core tube.
50
open and with a horseshoe cut on the side surface, and the cutting tip is designed as a blade with a cutting blade installed at the outlet of the distal end of the core tube, tangentially passing from the axis of the core tube to its side surface at the location of the horseshoe cut and inclined to the said axes at an angle equal to or less than 90, the blade goes into a spiral, and its external size is equal to the outer radius of the spiral, while the distal end of the core tube has a wedge section nayuschiys from the inner end of the blade and terminating at the lateral surface of the core barrel, and the front portion is provided with a free edge, one end of which is connected to the inner end of the blade of the cutting blade, and the other - with the core barrel.
2. The drill according to claim 1, which means that the leading edge of the wedge section is free, pass in the projection in the radial direction.
3. The drill according to claim 1, distinguishes 35
made spiral.
4. The drill according to claim 1, which means that the blade is made in steps corresponding to the step of the helix.
5. Bur in one of the paragraphs. 1-4, in that the cutting blade of the blade is provided with teeth.
f
a wedge section
40
a wedge section
6.Bur in one of the paragraphs. 1-5, about t. the fact that the end edge of the core pipe and / or the wedge section has a spiral cut and at least
.f one cutting tooth, parallel to the axis of the core tube.
7. Bur in one of the paragraphs. 1-6, about the fact that the point
connecting the inner end of the cutting blade blade with the end of the free leading edge of the wedge section of the tape on the axis of the core pipe.
50
YU
Fie.2
权利要求:
Claims (7)
[1]
Claim
1. A drill for installing a support element in the soil, comprising a core pipe, a spiral mounted on the outer surface of the core pipe, and a cutting tip, which is necessary so that, in order to increase work efficiency, the distal the end of the core tube is made open and with a horseshoe-shaped cutout on the side surface, and the cutting tip is made in the form of a distal installed at the outlet
5 of the end of the core tube of the blade with a cutting blade extending in a tangential direction from the axis of the core tube to its lateral surface at the location of the horseshoe-shaped cut and inclined to the axis at an angle equal to or less than 90 °, the blade becoming a spiral and its outer size equal to external
15 to the radius of the spiral, while the distal end of the core tube has a wedge section starting from the inner end of the blade and ending on the side surface
20 core pipe, and the site itself is equipped with a free leading edge, one end of which is connected to the inner end of the cutting blade of the blade, and the other to the core pipe.
25
[2]
2. The drill according to claim 1, with the exception that the free front edge of the wedge section extends in the projection in the radial direction.
[3]
3. The drill in π. 1, I distinguish 3 Q and with the fact that the wedge section is made spiral.
[4]
4. The drill according to claim 1, with the fact that the blade is made with a step corresponding to the step of the spiral.
35
[5]
5. Drill according to one of paragraphs. 1-4, characterized in that the cutting blade blade is provided with teeth.
I
[6]
6. Drill according to one of paragraphs. 1-5, characterized in that the end edge of the core tube and / or wedge section has a spiral cut and at least 4 5 made one cutting tooth located parallel to the axis of the core tube.
[7]
7. Drill according to one of paragraphs. 1-6, characterized in that the point of connection of the inner end of the cutting blade blade with the end of the free front edge of the wedge section lies on the axis of the core pipe.
l-d
Figure 2
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引用文献:
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法律状态:
优先权:
申请号 | 申请日 | 专利标题
DE3624202A|DE3624202C2|1986-07-17|1986-07-17|Twist drill|
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