JPS5894514A - Constructing device for sand pile - Google Patents

Abstract

PURPOSE:To raise the efficiency of working without the need to stop the drawing of an outer casing. CONSTITUTION:Sand in an outer casing 2 is compacted by vertically moving a casing 5 by the alternate operation of an elevating air spring 4 and a lowering air spring 400. In short, by moving a base 12 by alternately charging air into or drawing air out of the elevating air spring 4 and the lowering air spring 400, the casing 5 is vertically moved to compact the sand inside the outer casing 2 and also the sand at the tip of the outer casing 2 is pushed out of an outlet 22 while the surrounding ground G of the outer casing 2 is protected from being stirred. When air is further supplied to a vibrator 6 through an air supply pipe 68, a hammer 65 moves vertically independently of the vertical movement of the elevating casing 3, and thereby the sand pushed out and compacted by the casing 5 is further compacted.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sand pile construction device for constructing sand piles in soft ground in order to improve the soft ground.

There have been various types of sand pile construction equipment for creating sand piles in soft ground, but one of them has a double pipe structure consisting of an outer casing and an inner casing, and is capable of creating high-quality sand piles. There is a sand pile creation device that can be used.

The sand pile creation device includes a hollow outer casing, an exciter disposed above the outer casing so as to be movable up and down via an air spring, and an upper end fixed to the exciter. an inner casing whose lower part is suspended in the outer casing; the air spring is filled with pressurized air to integrally fix the exciter and the outer casing; The outer casing (including the inner casing) penetrates into the ground due to the vertical vibration of the casing. Then, the pressurized air in the air spring is gradually released and the edge between the exciter and the outer casing is cut to prevent the vibration of the exciter from being transmitted to the outer casing. To prevent the ground from being agitated by the vibrations transmitted to the surrounding ground, only the inner casing is moved up and down by the vibration of the exciter to compact the sand in the outer casing, and then the air spring is filled with pressurized air again to remove the outer casing. The outer casing is pulled out by propagating the vibration of the exciter, and the above-mentioned operation is repeated to create a sand pile in the ground. However, since the above-mentioned sand pile construction apparatus uses a vibrator, a shock absorber is required. In addition, in order to cut the edge between the outer casing and the inner casing to prevent vibrations from being transmitted to the ground around the outer casing, we temporarily stopped pulling out the outer casing, and then moved only the inner casing up and down to remove the outer casing. It is necessary to compact the sand, which has the disadvantage of poor work efficiency.

The present invention aims to provide a sand pile construction device that improves the above-mentioned drawbacks. EMBODIMENT OF THE INVENTION Hereinafter, two examples of the embodiments of the sand pile construction apparatus according to the present invention will be described with reference to the accompanying drawings.

1 to 8 show a first embodiment of the sand pile building apparatus of the present invention.

The sand pile building device of the present invention in this embodiment includes a tote frame 100 and a lower frame 1, guide columns 10 and 11 whose upper and lower ends are fixed between the upper and lower frames 100 and 1, and the guide columns 10 and 11. 11 K Interposed between a lifting platform 12 mounted to be able to rise and fall, the upper mount 100, lower mount 1, and the lifting pedestal 12, and extending and contracting to move the lifting platform 12 up and down over a long stroke. A long stroke earth air spring 4 and a lower air spring 400, a fixed support 13 extending downward from the lower surface of the lower mount 1,
A hollow outer casing 2 extends further downward from the lower end of the fixed column 13, and a first rotation drive section 3 and a second rotation drive section 9 are provided vertically in the middle of the fixed column 13.
and its upper end is rotatably attached to the first rotary drive part 3, and the part below the upper end is inserted into the outer casing 2, and the lower end is located above the lower end of the outer casing Ii6.12. Hollow first rotary tube (material)
The upper end is rotatably attached to the second rotary drive section 9, and the portion below the upper end is attached to the first rotary tube (material).
a hollow first rotary drive which is inserted into the interior and whose lower end is located below the lower end of the first rotary tube (material); An elevating casing 5 that is inserted into the second rotating pipe and whose lower end is located below the lower end of the second rotating pipe (part), and a lower end of the first rotating pipe (part) and the first rotating drive, respectively. The attached excavating blade 31 for forward rotation and the excavating blade 91 for reverse rotation, the vibrator 6 attached to the lower end of the lifting casing 5, and the vibrator 6 installed in the outer casing 2, are installed to transfer sand between the outer casing 2 and the first rotation drive. A hopper 7 for a sand input and supply port is provided between the two.

The outer casing 2 is divided into three parts at its lower end to form the outer casing 2 itself, a short pipe 32 for forward rotation, and a short pipe 92 for reverse rotation. The upper end of the short tube for forward rotation is rotatably attached via a shaft bearing member, and the reverse rotation short tube 92 is rotatably attached to the lower end of the forward rotation short tube 32 via a shaft bearing member. The short tube 32 for forward rotation is attached to the lower end of the first rotary tube, and the short tube 92 for reverse rotation is integrally attached to the lower end of the second rotary tube. Further, the forward rotation digging blade 31 is provided spirally in the right direction (clockwise) when viewed from above on the outer peripheral side of the forward rotation short pipe 32, and the reverse rotation cutting blade 31 is provided on the outer peripheral side of the reverse rotation short pipe 92. Rotating drilling blade 9
1 is provided in a spiral shape K in the left direction (counterclockwise direction) when viewed from above. Thus, the sand discharge port 22 at the lower opening of the outer casing 2, that is, the lower opening of the short pipe 92 for reverse rotation, is opened and closed.
is closed when the outer casing 2 penetrates to prevent earth and sand from entering the outer casing 2, and is opened when the outer casing 2 is pulled out so that it can be opened and closed by a hinge mechanism U so as not to interfere with the construction IL of the sand pile.

The first rotary drive unit 3 includes a reducer unit fixed to the fixed column 13K, and two drive motors (the number of which is not particularly limited) 34 mounted on the reducer. and a drive motor 34, and the upper end of the first rotary tube is rotatably attached to the reducer. A through hole (not shown) is provided in the reduction gear 33 so that the elevating casing 5 and the second rotary tube can be inserted into the first rotary tube.

Similarly, the second rotary drive unit 9 includes a reducer 93 fixed to the fixed column 13 and a reducer 93 mounted on the reducer 93.
A drive motor 94 (the number of which is not particularly limited) is connected to the drive motor 9, and the reducer 93 and the drive motor 94 are connected to each other, and the reducer 93K is rotatably attached to the upper end of the second rotating pipe spool. A through hole (not shown) is provided in the reducer 93K so that the elevating casing 5 can be inserted therethrough during the second rotational drive.

The first rotary tube has an outer diameter smaller than the inner diameter of the outer casing 2 and can rotate within the outer casing 2. On the other hand, the second rotary tube spool has an outer diameter smaller than the inner diameter of the first rotary drive, and can rotate within the first rotary tube.

The elevating casing 5 has a cylindrical shape with an outer diameter smaller than the inner diameter of the second rotary tube, and is configured to be rotatable in the second rotary tube, with its upper end connected to the lower surface of the elevating table 12. The vibrator 6 is attached to the lower end of the vibrator 6, and the lower end of the vibrator 6 is inserted into the second rotary tube through the middle of the second rotary tube, and the lower end of the vibrator 6 is protruded further downward than the opening/closing shoe 23 of the outer casing 2.

The guide columns 10 and 11 consist of four large-diameter guide nozzles (10) and four small-diameter guide nozzles (11), each with two guide poles (four in total) as a set, and the upper and lower ends are connected to the upper mount 100 and the lower mount. IKK is fixed,
To ensure that the vertical expansion and contraction strokes of air springs 4 and 400 for earthworks are sufficiently long.

Although the elevating table 12 is omitted in the drawing, a through hole through which the guide columns 10 and 11 can be inserted is provided.

As shown in FIGS. 2 to 5, the upper air spring 4 is
The so-called 5-piece type includes two circular end plates 41, an appropriate number of circular plates (for example, four) having a diameter slightly smaller than the diameter of the end plates 41, and an elastic member such as rubber. It is provided with an appropriate number of bellows mallets, for example, five bellows hammers and a shoe 10° John ring 430, each having a four-row bellows shape.

An engaging pawl a10 that closely engages the end of the bellows 43 is protruded in an annular shape on one surface of the end plate 41, and a mounting hole 411 is appropriately provided at a location outside the engaging pawl 410 of the end plate 41. establish. The engaging claws 420 that tightly engage the ends of the bellows on both sides of the intermediate plate e are connected to the engaging claws 41 of the end plate 41.
0, and a through hole 421 for air circulation is provided at the center inside the engaging claw 420 of the intermediate sales company, while a guide arm U is provided at the outer peripheral end of the intermediate sales company. Set up a group. This guide mechanism consists of a substantially rectangular fixing plate 440 fixed to the outer peripheral end of the intermediate plate, a substantially triangular slide plate a, a semi-annular guide member 442 fixed to the slide plate 441, and a fixing bolt. 443 and nuts 444, the fixing plate 440 is provided with two through holes 445 through which the fixing bolts 443 are inserted, and the slide plate 441 is provided with elongated holes 446 through which the fixing bolts 443 can be inserted. Two holes are provided corresponding to the through holes 445 of the plate 440 and so that the longitudinal direction of the elongated holes 446 coincides with the radial direction of the intermediary sales company.
5 and the elongated hole 446 of the slide plate 441, tighten the fixing bolt 443 and nut 444, and then
1 is attached to the fixed plate 44G so as to be able to slide slightly in the radial direction of the intermediate plate core.

Then, the two end plates 41 are placed facing each other with an appropriate gap between them with the engaging claws 410 inside, and the four intermediate sales companies are arranged between the two end plates 41, and the intermediate plates 42
and between the end plate 41 and between the intermediate plate and the intermediate sales company.
Bellows 43 are arranged so that both ends of the bellows 43 are connected between the engagement claw 41G of the end plate 41 and the engagement claw 420 of the intermediate plate 42, or between the engagement claw 420 of the intermediate plate C and the engagement claw 420 of the intermediate plate 42. A cushion ring 430 is fitted into the valley of the bellows, and a through hole 412 for air circulation is provided in the center of the lower end plate 41. Although the lower air spring 400 is not illustrated and described, the above-mentioned lower air spring 4
It is a 5-unit type similar to the .

Two soil air springs 4 thus formed are interposed between the lifting platform 12 and the lower pedestal 1, and both upper and lower end plates 4 of the soil air springs 4 are installed.
1 is fixed to the lifting platform 12 and the lower pedestal l, respectively, and the guide member 442 of the air spring 4 is fixed to the guide column lO and 1.
1, and a branch pipe (not shown) from the air circulation pipe (not shown) K is connected to the through hole 412 for air circulation in the lower end plate 41 of the soil air spring 4. Further, the lower air spring 400 is interposed between the lifting platform 12 and the upper mount 100, and a branch pipe of the VC air distribution pipe is connected to the lower air spring 40G.

An air hose or the like (not shown) from a compressor (not shown) is connected to an air inlet and an air outlet provided in this air distribution pipe via a solenoid pulp or the like (not shown). By switching this solenoid valve etc., air from the compressor is alternately pressed into and out of the soil air spring 4 and the lower air spring 400, so that the soil air spring 4 and the lower air spring 400 alternately expand and contract. The lifting platform 12 is raised between the upper mount 100 and the lower mount 1,
Configure to fall.

As shown in FIGS. 6 and 7, the vibrator 6 has a head ω fixedly attached to the lower end of the inner casing 5, and an upper flange attached to a 7-lunge of the head ω. - Prefectural Sea - A cylinder 62 with a 7-piece fixed by bolts 61 etc.,
/ cylinder 62 K slidably housed piston 63
Then, I fixed it to the bottom end of the piston with Pol I...
The head ω is provided with an air supply port 600 and a bifurcated air supply passage 601, and the cylinder 6
2 is provided with two air supply passages 621 in the axial direction of the cylinder 62 that communicate with the air supply passage 601 of the head ω, and an air discharge port 622 is provided in the cylinder 62 in the four air supply passages 621 below the air supply passage 621. An air insertion port 630 is provided in the piston 6, and an air passage port 630 is provided in the piston 6 between the outer circumference of the piston and the inner circumference of the cylinder 62. A first air chamber communicating with the supply path 621 is provided, and a second air chamber 67 communicating with the air insertion port 630 is provided within the piston port.

The lower end of the air supply pipe passed through the inner casing 5 is connected to the supply port 60G of the head ω, and the air hose or the like (not shown) from a compressor (not shown) is connected to the upper end of the air supply pipe 68. When connected and supplying air through this air supply pipe, the handle 14 is configured to move up and down. That is, when air is supplied through the air supply pipe 8, the air is supplied to the supply port SO.
O, through the feed passages 601 and 621 and the insertion port 630, the piston θ is pressed down into the second air chamber 67, and the hammer 65 is lowered accordingly. The piston 8 descends, the first air chamber and the second air chamber 67 are closed, and the insertion port 63 is closed.
When the second air chamber 67 and the discharge port 622 communicate with each other through the insertion hole 630. Outlet 6
Air is discharged to the outside through the air supply port 600.22 and is continuously supplied through the air supply pipe Nishiki. The piston 63 is pushed up by being press-fitted into the first air space through the supply paths 601 and 621, and the hammer 65 rises accordingly.

Thereafter, the above-mentioned action is repeated to cause the main brocade to move downward independently of the vertical movement of the elevating casing 5 by the air springs 4 and 400.

The sand pile building apparatus of the present invention in this embodiment has the above-mentioned configuration.Next, the sand pile building operation will be explained with reference to FIG.

(a) First, the sand pile construction device of the present invention is suspended from a leader via a wire rope, a hanger, a sheave, etc. (not shown in the drawing), and is positioned at a predetermined position on the soft ground G to be improved. Next, drive the drive motor of the first rotation drive unit 3 to rotate the first rotation tube (main) and the short tube blade for forward rotation in the direction of the arrow (rightward when viewed from above), and at the same time rotate the second rotation. The drive motor 94 of the drive unit 9 is driven to move the second rotary tube spool and the reverse rotation short tube 92 in the direction of the arrow (the first rotary tube (
The cutting blade 31 of the forward rotation short tube 32 rotates forward in the right direction, and the excavation blade 31 of the forward rotation short tube 32 rotates forward in the right direction. The outer casing 2. The first rotating pipe (material), the second rotating pipe spool, the elevating casing 5, etc. are penetrated into the ground G to a required depth. At this time, the short tube blade for forward rotation of the second rotation drive rotates clockwise in the forward direction, while the short tube 92 for reverse rotation of the second rotation f9o rotates counterclockwise in the left direction, so that the rotational moment of the forward rotation is opposite to that of the forward rotation. The rotational moment of rotation is canceled out, and the outer casing 2. The first rotating pipe (capital), the second rotating pipe spool, and the elevating casing 5 are twisted! There is no risk of it happening. In addition, since the rotation of the excavation blades 31 and 91 causes the outer casing 21 first rotary pipe addition, second rotary pipe spool, and elevating casing 5 to penetrate into the ground G, a vibro (exciter) is used to penetrate the outer casing 21 into the ground G.
- The outer casing 2, etc. can be penetrated earlier than the one that penetrates the chassis leg, etc., and together with the above-mentioned counterbalancing effect of the rotational moment, it can be penetrated with almost no noise and vibration. There is no need for a Yotsuk upsorber or the like. In addition, when the outer casing 1 and 2 penetrate, the opening/closing shoe phantom is closed, so that the earth and sand are released into the outer casing 2.
There is no risk of it getting inside.

(b) By the operation of (a) above, the outer casing 2.
First rotating tube, second rotating tube and lifting casing 15
5 to the required depth, the drive motor is installed.

The feed is stopped and sand is thrown into the space between the outer casing 2 and the elevating casing 5 from the hopper 7.

(e), (ω) Then, the earth air spring 4 and the lower air spring 400 are operated alternately to raise and lower the lifting cage 52o.
The sand in the outer casing 2 is compacted by moving it up and down.

-! Page 7°- That is, by alternately pressing air into and releasing air from the upper air spring 4 and the lower air spring 400 to raise and lower the lifting platform 12, the ground G around the outer casing 2 is not stirred. While the rice is being stored, the elevating casing 5 is raised and lowered via the elevating table 12.

The sand in the outer casing 2 is compacted by the elevating casing 5, and the sand at the tip of the outer casing 2 is pushed out from the discharge port 22. Furthermore, when air is supplied to the vibrator 6 via the air supply vibro 8, the casing moves up and down independently of the vertical movement of the elevating casing 5, and the sand is pushed out and compacted by the elevating casing 5. further strengthen.

Then, depending on the amount of sand pushed out of the elevating casing 5, the drive motors 34 and 94 are driven to reversely rotate the digging P11 blades 39°91 to move the outer casing 2. Gradually pull out the first rotary tube (to), the second rotary tube spool, and the lifting casing 5.

At this time, if the stroke length of the vertical movement of the lifting casing 5 is large, the amount of sand pushed out by the lifting casing 5 will be large, and therefore the sand will come out well and the sand pile can be built efficiently and quickly.

Furthermore, in the present invention, when the elevating casing 5 is lowered, the lower air spring 400 operates to forcibly push down the elevating casing 5, so that the pushing blade of the elevating casing 5 is simply due to the weight of the elevating platform 12. It is extremely large compared to That is, the lifting casing 5 is pushed down with a large force. Therefore, tamping and extrusion of sand is good.

As described above, according to one aspect of the present invention, there is no need to stop pulling out the outer casing 2, so that work efficiency can be significantly improved.

Although omitted in the above embodiment, if a jet nozzle is provided in the lifting casing 5, sand is pushed out from the tip of the outer casing 2 by jetting air from this jet nozzle, and the lifting casing 5 is pushed out. In combination with the tamping and the tamping of the vibrator 6, even stronger sand piles can be created quickly.

Also, when constructing sand piles, the opening/closing shoe n will not open.
- -,,,,,,,,--,-,-, so there is no risk of any hindrance to the construction of sand piles.0 (e) Repeat the steps (c) and (d) above. Build strong sand piles in soft ground G.

FIG. 9 is a partially cutaway front view showing a second embodiment of the sand pile building apparatus of the present invention.

The sand pile building device of this embodiment uses a hydraulic cylinder 8 as a telescopic lifting/lowering operating means.

That is, the base end of the hydraulic cylinder 8 is fixed to the upper frame 100, and the piston rod 81 of the hydraulic cylinder 8 is fixed.
The tip of the lifting table 12 is fixed to the upper surface IIC.

When pressure oil is supplied to the head chamber (not shown) of this hydraulic cylinder 8, the piston rod 81 moves forward, and the elevating casing 5 descends via the elevating platform 12. Further, when pressure oil is supplied to a rod chamber (not shown) of the hydraulic cylinder 8, the piston rod 81 retreats, and the elevating casing S rises via the elevating table 12.

Furthermore, when pressure oil is supplied into the head chamber, the oil in the rod chamber is discharged, and conversely, the trapped pressure oil in the rond chamber is
94514(5) When supplied, the oil in the head 1 chamber is discharged.

In addition, in this embodiment, the g1 rotation drive unit 3 is mounted on the lower mount.
The main body of the speed reducer fa33, the main body of the speed reducer 93 of the second rotary drive m9, and the top end of the outer casing 2 also serve as the main body.
゛As is clear from the above embodiments, the sand pile construction device of the present invention raises and lowers the lifting casing by means of lifting and lowering operation means for soil use, while compacting and discharging the sand in the outer casing. Since the outer casing is pulled up, sand removal is good and there is no need to stop pulling up the outer casing, which improves work efficiency. Furthermore, since no exciter is used, there is no need for a shock absorber, and there are fewer problems with noise and vibration. Moreover,
Since the rotation of the first rotating tube and the rotation of the 11!2 rotating tube are reversed, the forward and reverse rotational moments cancel each other out, causing the outer casing, first rotating tube, second rotating tube, and lifting casing to twist. There is no doubt. Furthermore, when the elevating casing is lowered, the telescopic elevating and lowering actuating means is operated to forcibly lower the elevating casing, so that the sand comes out even faster and the work efficiency is improved.

Note that, as a matter of course, the sand pile construction apparatus of the present invention is not limited to the above-mentioned embodiments.

[Brief explanation of the drawing]

1 to 8 show a first embodiment of the sand pile construction apparatus according to the present invention, FIG. 1(a) is a partially cutaway front view of the upper part, and FIG. 1(b) is the lower part. Partially cutaway front view of 5! !
2 and 3 ri cross-sectional view and plan view of the air spring,
Figure 4 is an enlarged view of the ■ part in Figure M3, Figure 5 is the ■ arrow diagram in Figure 4, Figure 6 is a vertical cross-sectional view of the end a.., Figure 7 (a), (b) n air hammer. Explanatory diagram of the operating state of , Figure 8 (a), (b), (e), (
d) and (e) are construction explanatory drawings. Figures 61 and 9 are partially cutaway front views showing a second embodiment of the sand pile building device of the present invention. 1... Lower mount, 100... Upper mount, 10, 11.
... Guide column, 12 ... Lifting table, 2 ... Outer casing, 3 ... First rotation drive section, (fund) ... First rotation pipe, 31 ... Excavation blade for forward rotation, 4... Upper L spring, -400... Lower 1 spring, 5... Elevating casing, 6... Pipe rake -17... Hopper, 8...
・・Oil field cylinder, 9・・2nd rotation drive unit, ・・
Second rotating pipe, 91...Drilling blade for reverse rotation. Patent Applicant Nakatomi Kurimoto Masashi Kurimoto Agent Patent Attorney Tadashi Akimoto Figure 1 (b) Figure 2 Figure 6 64 Procedural Amendment (Self II) July 22, 1980 Commissioner of the Japan Patent Office Haruki Shimada Tono 1, "J + Go' 1 display 11□1m 14th year special - No. 1 F 1774 No. 2,
Name of the invention Relationship with person 1111 who operates sand pile creation device 3, Supplementary 1F- Patent applicant 111, (Residence) 4-7 Himejima, Takukawa-ku, Osaka-shi, Osaka Prefecture
-11 names. B11. Kurimoto Naka
Tomi (and 1 other person) 4, agent telephone number Tokyo e8υ4414 Representative 5, Supplement 11” dated 1920, month, day, page 1, page 1, line 17, line it, and line it as below: join. "In addition, in the above-mentioned upper air vent 9μ and lower air vent qoo, By passing one guide pipe through the provided hole 7'c (not shown), it is possible to further prevent the upper air spring l and the lower air panel θO from lateral deflection.''

Claims (1)

[Claims] 1. An upper pedestal and a lower pedestal, a guide column fixed between the upper pedestal and the lower pedestal, an elevating table attached to the guide column so as to be able to rise and fall, and the elevating table and the upper pedestal. and a telescopic elevating actuator that is interposed between the lower pedestal or between the elevating platform and the upper pedestal or the lower pedestal and raises and lowers the elevating platform;
a hollow outer casing extending downward from the lower mount; a first rotation drive section and a second rotation drive section provided on any of the upper mount, the lower mount, and the outer casing; and the first rotation drive section. a hollow first rotary tube having an upper end rotatably attached and a portion below the upper end inserted into the outer casing; A hollow conduit 2 co-transforming pipe whose part is inserted into the first rotating pipe, and an elevating casing whose upper end is fixed to the elevating platform and whose part below the upper end is pushed into the second rotating pipe. , and 1. Said first
A forward rotation excavation blade and a reverse rotation excavation blade are attached to the lower ends of the rotary tube and the second rotary tube, respectively, and the outer casing is provided with sand for supplying sand between the outer casing and the first rotary tube. A sand pile construction device characterized by comprising a sand input supply port. 2. The sand pile construction device according to claim 1, wherein the telescopic elevating and lowering operating means has a longer telescopic stroke length to increase the stroke length of the vertical movement of the elevating casing. 3. A patent claim characterized in that the telescopic elevating and lowering actuating means consists of an earth air spring interposed between the lower pedestal and the elevating table, and a lower air spring interposed between the upper pedestal and the elevating table. The sand pile construction device according to item 1 or 2. 4. The sand pile construction apparatus according to claim 1 or 2, wherein the telescopic elevating and lowering operating means is a cylinder interposed between the upper frame and the elevating table. 5. Claim 1, wherein the elevating casing has a vibrator at its lower end. The sand pile construction device according to item 2, 3, or 4.