JPH0641689B2 - Slime processing equipment - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a slime treatment device for an underground drill hole.

Conventional technology In general, cast-in-place concrete piles are piles that are constructed on site by placing concrete in the excavation holes that have been drilled in the ground in advance, but to maintain the stability of the hole wall, It is customary to fill the hole with muddy water or a stabilizing solution during excavation to prevent collapse of the hole wall and to prevent hole boiling and heaving. Then, when the excavation to the predetermined support ground is completed, suspend the reinforcing bar cage in the hole, and
A concrete pile is constructed by suspending a tremie pipe and pouring concrete from the tremie pipe into the hole.

When pouring the above concrete, if the slime (excavation waste, sediment, etc.) remains at the bottom of the hole and the amount of consolidation is large,
Since it is extremely harmful, slime should be removed as completely as possible. This hole bottom treatment is to remove slime on the hole bottom after the completion of excavation and to adhere the placing concrete to the supporting ground, but the construction method, the excavation depth, the soil to be excavated, the water depth in the hole, etc. There are various methods depending on those situations. However, the general method of slime treatment is the suction method or the air lift method, both of which use a tremie pipe as a water supply pipe, and a suction pump is connected to the tremie pipe that reaches the bottom of the hole to suction and
It is the discharge by the air lift pump that discharges or sends the air to the lower part.

Problems to be Solved by the Invention However, in this type of conventional slime treatment method, slime is removed only in the vicinity of the periphery of the lower end of the tremie pipe, and therefore the tremie pipe is lifted by a crane to move its position, It is suspended again, sucked and removed, and this work is repeated to suck the slime on the entire hole bottom as much as possible, but it is difficult to completely remove it. Therefore, a blade is attached to the lower end of the tremie tube and rotated to scrape off the slime at the bottom of the hole. As described above, in the method of using slime treatment only with the tremie tube, it is not possible to complete the slime treatment, and in the structure in which the blade is attached to the tremie tube and the blade is rotated, the apparatus becomes large-scale and the handling is not easy. .

The present invention has been made in view of the above circumstances, and an object thereof is to provide a slime treatment apparatus capable of completely removing slime at the bottom of an excavation hole.

Means for Solving the Problems In order to solve the above problems, the present invention fixes a body for suspending and setting a frame by bridging a frame to the edge of an excavation hole, fixes a volute pump incorporated in the body. It is submerged near the surface of the water so that it can be operated, and a suction pipe that communicates with the centrifugal pump is provided to allow the water at the bottom of the hole to be sucked out and discharged, and the discharged water conveys slime etc. to the outside. On the other hand, a slimming device for an excavation hole is configured by providing a drive unit located on the water surface, making the suction pipe rotatable by the drive unit, and providing a scraper at the lower end of the suction pipe. .

Effect According to the above configuration of the present invention, when the drill hole is completed, the suction pipe is inserted into the hole, the centrifugal pump located below the water surface is driven, and the water in the hole is sucked and discharged to the outside. , The suction pipe is rotated by the drive unit located above the water surface. Due to this operation, the centrifugal pump is located near the water surface, so that pumping can be started immediately without raising pressure and water resistance and without priming, and the scraper can be operated via the drive unit. If it is gently rotated, the scraper scrapes off the slime at the bottom of the hole, while the water containing the slime is sucked from the lower end of the suction pipe and discharged to the ground.

Embodiment One embodiment of the present invention will be described above with reference to the drawings. First
FIG. 1 is a sectional side view showing the slime treating apparatus of the present invention as a whole, and FIG. 2 is a sectional side view showing its partial operation.
In the figure, 1 is a bottom-drilled hole, 2 is a casing for protecting the upper part of the hole 1, 3 is a frame fixed over the upper end of the casing 2, and 4 is vertically movable engagement with the frame 3. The main body 5 is a wire for suspending the main body 4 and is suspended from an appropriate crane. 6 is a suction pipe rotatably connected to the body 4, 7 is a delivery pipe connected to the suction pipe 6, 8 is a hose connected to the delivery pipe 7, and 9 is muddy water W in the hole 1. For supplying the suction pipe 6, a driving unit for rotating the suction pipe 6, 11 a rotary shaft connecting the driving unit 10 and the suction pipe 6, and 12 a suction pipe 6
And a centrifugal pump located at an intermediate portion of the delivery pipe 7, and 13 and 13 are scrapers attached to the lower end of the suction pipe 6 so as to be capable of expanding.

3 to 4 are sectional side views, AA sectional views and BB sectional views of the main body 4, which show in detail the construction of the main part of the present invention. That is, the main body 4 forms a rectangular frame body by the four angle-type vertical members 14 surrounded by the frame 3, and the drive unit 10 including an electric or hydraulic motor is fixed to the plate 15 on the upper portion of the frame body 14. Further, chambers 17 fixedly attached to the bottom plate 16 are provided in the lower part. The upper end of the suction pipe 6 has a head portion 19 in which holes 18 are opened in the chamber 17, and the rotary shaft 11 is connected to the head portion 19 in a non-removable manner. That is, the chamber 17 and the hole 18 which is the upper opening of the suction pipe 6 form a swivel. The centrifugal pump 12 is fixedly attached to the upper part of the chamber 17, and an opening 20 communicating with the chamber 17 is formed. Reference numeral 21 is a connection port for the power cord 22. As shown in the figure, the frame 3 is in the shape of an iget and surrounds the main body 4, and the main body 4 is provided with stoppers 23, 23 for preventing the frame 3 from coming off near the lower part. Also, the main body 4
The frame 3 which receives the rotational reaction force of the
Protrudes from the upper edge of the casing 2 and locks non-rotatably.

On the other hand, FIGS. 6 and 7 show the scraper 13 at the lower end of the suction pipe 6 in detail. The spline projections 6a, 6a are provided at the lower end of the suction pipe 6.
And a pair of brackets 25, 25 facing each other in the diametrical direction above where the spline protrusions 6a, 6a are located.
And one ends of links 26, 26 are rotatably attached to the brackets 25, 25, respectively. on the other hand,
As shown in FIG. 10, the spline projections 6a, 6a of the suction pipe 6 are inserted into a cylindrical body 28 having grooves 27, 27 engaged with the projections 6a, 6a formed on the inner peripheral surface thereof. . The cylindrical body 28 has a diametrical scraper body 29 at its lower end and a shaft 3 at both end portions of the scraper body 29.
It has enlarged scrapers 31, 31 rotatably connected via 0, 30. The other ends of the links 26, 26 are attached to the shaft 3 of the expansion scrapers 31, 31.
2, 32 are connected.

Next, the operation of the above-described embodiment will be described. The scraper 13 of the main body 4 and the suction pipe 6 hanging from the hole 1 is suspended from the upper side of the hole 1 where the excavation is completed by a wire 5 suspended by an appropriate crane. Insert inside. At this time, the scraper 13 is shown in FIG.
As shown in the figure, the enlarged scrapers 31, 31 are different in weight due to their own weight, the weight of the scraper body 29, and the tubular body 28.
It is suspended from the suction pipe 6, folded upward, and stored with a sufficient margin within the cross-sectional diameter of the excavation hole 1. Then, when the scraper main body 29 lands on the hole bottom 33, the scraper main body 29 receives the resistance force of the hole bottom 33, so that the spline projections 6 a, 6 a of the suction pipe 6 are received.
a descends into the cylindrical body 28. As a result, the link 26,
26 spreads to expand the scraper 31, 31, the shaft 30,
Since it opens outward around 30, as shown in FIG. 8 and FIG.
Land on. On the other hand, the frame 3 is the casing 2
It is mounted on the upper end portion of and is fixed non-rotatably by the rotation stopper 3a. The body 4 can slide down the frame 3 and descend, and the centrifugal pump 12 located at the lower end of the body 4 is submerged in water. Drive unit 10 and centrifugal pump 1
When the scraper 13 lands on the hole bottom 33 as described above by driving 2, the suction pipe 6 rotates about its axial center and the vortex pump 12 smoothly injects the priming water into the lower end of the suction pipe 6. Aspirate water from the section. Then, since the suction pipe 6 rotates, the scraper 13 rotates in the hole bottom 33.
The slime deposited on the hole bottom 33 is scraped off, and the peeled slime is sucked up by the suction pipe 6 together with water and rises, and the hole 1 at the upper end of the suction pipe 6 is lifted.
8 and 18 to the inside of the swivel device 17, and further, through the opening 20 of the swivel device 17, the delivery pipe 7
Then, it is discharged from the hose 8 to the outside of the hole 1. The suction pipe 6 is rotated relatively slowly to prevent the scraped-off slime from floating due to appropriate agitation and becoming difficult to be sucked.

When the slime on the hole bottom 33 is removed for a predetermined time as described above and the processing is completed, the crane is operated again to operate the wire 5
The main body 4 is lifted up through the. When the main body 4 rises, the frame 3 remains stationary on the upper edge of the casing 2 until it engages with the stoppers 23, 23, but when the stoppers 23, 23 rise, it becomes integral with the main body 4 and moves upward. Can be moved to. On the other hand, when the suction pipe 6 moves upward, the scraper 13 moves upward so that the spline projections 6a, 6a come out of the cylinder 28, and the cylinder 28 and the scraper body 29 are still in the hole bottom 33. Rest, link 2
When 6 and 26 lift the expansion scrapers 31 and 31, the scraper main body 29 and the expansion scraper move upward together with the suction pipe 6. That is, the scraper 13 is automatically folded.

The present invention can also be used as an excavator by replacing the scraper with an excavating bit.

EFFECTS OF THE INVENTION According to the present invention described above, since the centrifugal pump located below the water surface is near the water surface in the hole and not at the bottom of the hole, the consideration of pressure resistance, water resistance and safety of the centrifugal pump is remarkable. Further, since the driving unit only requires a small amount of power because the drive unit only needs to rotate the scraper gently, there is an advantage that the power system of the apparatus as a whole has an extremely low output. Furthermore, since the centrifugal pump is submerged in water, it does not need any other priming water or a vacuum pump to start it, and smooth pumping can be done immediately. Improve work efficiency. In addition, the configuration is extremely simple, compact, and lightweight, so that the hanging and setting work at the site can be performed easily, and the handling work can be extremely simple because the operation of the electric switch is sufficient.

[Brief description of drawings]

1 is an overall side view showing an embodiment of the present invention, FIG. 2 is a partial side view showing a partial change of FIG. 1, FIG. 3 is a sectional side view showing the upper part of the apparatus, and FIG. Is a sectional view taken along the line AA in FIG. 3, FIG. 5 is a sectional view taken along the line BB in FIG. 4, FIG. 6 is a side view showing the lower part of the apparatus, and FIG. 7 is CC in FIG. 8 is a sectional view taken along the line, FIG. 8 is an explanatory view of the operation of FIG. 6, and FIG.
-D line sectional drawing, FIG. 10 is the EE line sectional enlarged view of FIG. 1 ... Expanded bottom drilling hole, 2 ... Casing, 3 ... Frame, 4 ...
Body, 6 ... Suction pipe, 7 ... Delivery pipe,
8 ... Hose, 10 ... Drive part, 11 ... Rotating shaft, 12 ... Centrifugal pump, 13 ... Scraper.

Claims (1)

[Claims] 1. A main body for suspending and setting a frame by bridging the frame to the edge of an excavation hole is fixed to the frame, and a centrifugal pump incorporated in the main body is submerged near the water surface so as to be operable. By providing a suction pipe that communicates with the centrifugal pump, it is possible to suck and discharge the water at the bottom of the hole to the outside, and while the slime etc. is transported to the outside by the discharged water, a drive unit located on the water surface is provided, A slime treatment device for an underground excavation hole, wherein the suction pipe is rotatable by the drive unit and a scraper is provided at a lower end of the suction pipe.