JP7352053B2 - slime processing equipment - Google Patents

Description

When constructing cast-in-place piles in pile holes excavated using various muddy water excavation methods, the present invention provides a method for installing cast-in-place piles at the bottom of the pile hole, especially when the inner diameter is larger than the inner diameter of the shaft of the pile hole. The present invention relates to a slime processing device used for removing slime deposited on an expanded bottom portion.

Conventionally, when constructing cast-in-place piles, when a pile hole is excavated in muddy water using the Benoto method, earth drill method, reverse method, etc., slime precipitated from the muddy water is deposited at the bottom of the pile hole.
If this slime is left as it is, the strength of the tip of the pile created in the pile hole will deteriorate when concrete is subsequently placed, so it is necessary to remove the slime before that.

By the way, as a slime processing device for removing the slime deposited in the expanded bottom part having an inner diameter larger than the inner diameter of the shaft part of the pile hole, the slime is rolled up by injecting water supplied from a submersible pump for water injection, A submersible slime suction pump that sucks the slime and discharges it onto the ground has been proposed and put into practical use (for example, see Patent Document 1).

However, the conventional slime processing apparatus has a problem in that the rolled up slime moves laterally and spreads, making it difficult to completely suck and discharge the slime with a submersible slime suction pump.

In addition, since the horizontal movement of conventional slime processing equipment is limited within the range of the inner diameter of the shaft of the pile hole, in particular When the eccentric bottom-expanded pile construction method was adopted, it was difficult to remove the slime deposited in the bottom-expanded section.

In order to deal with this problem, a slime processing device has been proposed that is equipped with a tilting means that moves the slime suction submersible pump radially outward from the inner wall surface of the shaft part at the expanded bottom part (see Patent Document 2). ).

However, in the slime processing apparatus described in Patent Document 2, it is expected that skill is required to move the slime suction submersible pump via a wire rope.

JP-A-4-194116 Patent No. 4412679

In view of the problems of the conventional slime processing equipment described above, the present invention reliably removes slime deposited in the enlarged bottom portion having an inner diameter larger than the inner diameter of the shaft portion of a pile hole without requiring any skill in operation. The purpose of the present invention is to provide a slime processing device that can handle slime.

In order to achieve the above object, the slime processing device of the present invention is a slime processing device for removing slime deposited in an expanded bottom portion having an inner diameter larger than the inner diameter of the shaft portion of a pile hole. A rigid vertical support member suspended from the ground so as to be movable in the horizontal direction, a horizontal support member attached to the lower end of the vertical support member, and a mounting position of the vertical support member of the horizontal support member. a submersible pump for water injection provided on one side with the above-mentioned submersible pump in between, a submersible pump for slime suction provided on the other side with the mounting position of the horizontal support member and the vertical support member interposed therebetween, and the submersible pump for slime suction. The present invention is characterized by comprising a water jetting member that jets water supplied from a submersible pump for jetting water in order to stir up slime in the vicinity of the water jetting water pump.

In this case, the vertical support member may be made of a pipe member, and the slime sucked in by the slime suction submersible pump may be discharged to the ground via the vertical support member.

Further, the water injection member is provided with a water injection port that injects water toward the slime suction submersible pump, and a scraper is provided at a position facing the water injection member and the slime suction submersible pump. be able to.

According to the slime processing device of the present invention, slime deposited in the expanded bottom portion having an inner diameter larger than the inner diameter of the shaft portion of the pile hole can be reliably removed without requiring any skill in operation.

FIG. 2 is an explanatory diagram showing the state of use of the first embodiment of the slime processing apparatus of the present invention. It is a front view of the same slime processing apparatus. It is a top view of the same slime processing apparatus. It is a side view of the same slime processing apparatus. The water injection member of the same slime processing apparatus is shown, (a) is a sectional view, and (b) is a front view. It is an explanatory view showing another usage state of the same slime processing device. A second embodiment of the slime processing apparatus of the present invention is shown, in which (a) is a front view, (b) is a plan view, and (c) is a plan view of a modified embodiment.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of a slime processing apparatus of the present invention will be described based on the drawings.

1 to 6 show a first embodiment of the slime processing apparatus of the present invention.
This slime processing device is for removing slime deposited in the expanded bottom part K, which has an inner diameter larger than the inner diameter of the shaft part H of the pile hole. A vertical support member 1 having rigidity hanging from the vertical support member 1, a horizontal support member 2 attached to the lower end of the vertical support member 1, and one side with the mounting position of the horizontal support member 2 and the vertical support member 1 in between. A submersible pump 3 for water injection provided on one side, a submersible pump 4 for slime suction provided on the other side across the mounting position of the vertical support member of the horizontal support member 2, and a submersible pump 4 for slime suction provided on the other side. A water injection member 5 that injects water supplied from a submersible pump 3 for injection water, and a scraper 6 provided at positions facing each other with the water injection member 5 and the submersible pump 4 for sucking slime interposed therebetween. .

In this case, the vertical support member 1 is composed of a member having strength and rigidity capable of supporting the lower structure of the slime processing device, specifically, a pipe member, and the above-ground part of the vertical support member 1 is By supporting it with a support mechanism (not shown) such as a machine, it is suspended from the ground so as to be movable in the horizontal and vertical directions within the shaft portion H of the pile hole.
In addition, the vertical support member 1 made of a pipe member closes the lower end and connects the discharge pipe 41 of the slime suction submersible pump 4 to vertically support the slime sucked in by the slime suction submersible pump 4. It can be discharged to the ground via the member 1.
Note that the slime can also be discharged by separately arranging a discharge pipe (not shown) along the vertical support member 1.

The horizontal support member 2 is made of a member having strength and rigidity capable of supporting the lower structure of the slime processing equipment, specifically, a shaped steel member, and is attached to the lower end of the vertical support member 1, and is attached to the lower end of the vertical support member 1, and is attached to the lower end of the vertical support member 1. In this embodiment, a counterweight 7 is provided on the injection water submersible pump 3 side so that no bending moment is applied to the vertical support member 1 when the pump 3, slime suction submersible pump 4, etc. are provided. I'm trying to balance the weight.

The water injection member 5 is made of a straight pipe member in which a water injection port 51 is formed, and by connecting the discharge pipe 31 of the submersible pump 3 for injection water, the submersible pump 3 for injection water is directed toward the submersible pump 4 for slime suction. It is possible to spray water supplied from
In this embodiment, the water injection port 51 sprays water toward the lower part of the slime suction submersible pump 4, that is, toward the bottom surface of the enlarged bottom part K, so as to spray water toward the enlarged bottom part in the vicinity of the slime suction submersible pump 4. The deposited slime is rolled up and sucked in by a slime suction submersible pump 4 so that it can be removed.
For this reason, the water injection port 51 is formed so as to eject water below the horizontal direction, specifically, in a direction of 30 degrees with respect to the horizontal direction.

Further, the straight pipe member constituting the water injection member 5 has its base end 53 rotatably supported, and by changing the position of the fixing point 54, the direction of water injection can be adjusted. .

By the way, when water is injected from the water injection port 51, the reaction force is applied to the lower structure of the slime processing apparatus through the water injection member 5, and acts to rotate the lower structure of the slime processing apparatus. A bending moment is applied to the vertical support member 1.
Therefore, in this embodiment, in order to offset this reaction force, a water injection port 52 is provided in the straight pipe member constituting the water injection member 5 on the opposite side of the water injection port 51, that is, at a 180° symmetrical position. so that the same amount of water as the water injection port 51 is injected.

The scraper 6 is connected to the water injection member 5 and a slime suction submersible pump in order to prevent the slime rolled up by the water ejected from the water injection port 51 of the water injection member 5 from moving laterally and spreading. A curved vertical member 61 and a member having strength and rigidity, specifically, a curved vertical member 61 made of a steel plate, are provided at positions facing each other with the submersible pump 4 in between. It is configured with a top plate member 62 and is attached to the horizontal support member 2.

In this slime processing device, the slime suction submersible pump 4 is placed on the bottom of the expanded bottom part K (or the shaft part H of the pile hole) to suck slime. In order to stabilize the posture of the lower structure, the horizontal support member 2 is provided with support legs 8 that touch the bottom of the enlarged bottom part K (or the shaft part H of the pile hole).

The lower structure of the slime processing device, which mainly consists of the horizontal support member 2, has a planar shape that is larger than the planar shape of the shaft portion H of the pile hole so that it can be suspended from the ground and installed in the expanded bottom portion K. I try to make it small.

Next, a slime processing method using this slime processing device will be explained.
When removing the slime deposited in the expanded bottom part K, as shown in FIG. By injecting water supplied from the submersible pump 3 from the water injection port 51 of the water injection member 5, the slime deposited on the expanded bottom part K is stirred up, and the slime is sucked together with water by the slime suction submersible pump 4. is discharged to the ground via the vertical support member 1.
At this time, the scraper 6 prevents the slime rolled up by the water jetted from the water jetting port 51 of the water jetting member 5 from moving laterally or otherwise spreading.
Then, by a support mechanism such as a construction machine that supports the above-ground part of the vertical support member 1, the vertical support member 1 is moved (revolution) along the inner circumferential surface of the shaft portion H of the pile hole, and the slime suction water is By rotating (rotating) the vertical support member 1 so that the middle pump 4 is located on the side of the expanded bottom part K, the slime deposited around the entire circumference of the expanded bottom part K can be removed.
Furthermore, by moving the vertical support member 1 to the inside (or outside) of the shaft portion H of the pile hole, it is possible to accommodate an enlarged bottom portion K having an irregular cross section other than a circular cross section.
The movement (revolution) of the slime processing device can be performed continuously or intermittently, and even when the slime suction submersible pump 4 is attached to the bottom of the expanded bottom part K or when it is suspended. It can be carried out.

Next, when removing the slime deposited on the shaft part H of the pile hole, as shown in FIG. In this state, by injecting water supplied from the submersible pump 3 for water injection from the water injection port 51 of the water injection member 5, the slime deposited on the shaft part H of the pile hole is rolled up and mixed with water. The slime sucked in by the slime suction submersible pump 4 is discharged to the ground via the vertical support member 1.
At this time, the scraper 6 prevents the slime rolled up by the water jetted from the water jetting port 51 of the water jetting member 5 from moving laterally or otherwise spreading.
Then, by a support mechanism such as a construction machine that supports the above-ground part of the vertical support member 1, the vertical support member 1 is moved (revolving) inside the shaft portion H of the pile hole, and the slime suction submersible pump 4 is activated. By rotating (rotating) the vertical support member 1 so that it is located on the outer circumferential side of the shaft portion H of the pile hole, slime deposited over the entire surface of the shaft portion H of the pile hole can be removed.
The movement (revolution) of the slime processing device can be performed continuously or intermittently, and even when the slime suction submersible pump 4 is attached to the bottom of the shaft portion H of the pile hole, or when it is lifted up. It can be done even in a closed state.
Moreover, the slime deposited on the shaft portion H of the pile hole can be removed by using a conventional slime processing device.

According to this slime processing device, by moving and operating the vertical support member 1 using a support mechanism such as a construction machine that supports the above-ground part of the vertical support member 1, pile holes can be removed without requiring any skill. The slime deposited on the enlarged bottom part K, which has an inner diameter larger than the inner diameter of the shaft part H, can be reliably removed.

FIG. 7 shows a second embodiment of the slime processing apparatus of the present invention.
This slime processing device is for removing slime deposited in the expanded bottom part K, which has an inner diameter larger than the inner diameter of the shaft part H of the pile hole. A vertical support member 1 having rigidity hanging from the vertical support member 1, a horizontal support member 2 attached to the lower end of the vertical support member 1, and one side with the mounting position of the horizontal support member 2 and the vertical support member 1 in between. The submersible pump 3 for water injection provided on one side and the submersible pump 4 for slime suction provided on the other side across the attachment position of the vertical support member of the horizontal support member 2, and the submersible pump 4 for slime suction are surrounded. A water injection member 5 for injection of water supplied from a submersible injection water pump 3 provided as above is provided.

In this embodiment, the water injection member 5 is formed of an annular pipe member formed with a water injection port, which is provided so as to surround the slime suction submersible pump 4, and is connected to the discharge pipe 31 of the injection water submersible pump 3. This allows the water supplied from the water injection submersible pump 3 to be injected toward the vicinity of the slime suction submersible pump 4.
Here, the water injection member 5 sprays water toward the lower part of the area near the submersible pump 4 for slime suction, that is, the bottom surface of the enlarged bottom part K, so that the enlarged bottom part of the area near the submersible pump 4 for slime suction The deposited slime is rolled up and sucked in by a slime suction submersible pump 4 so that it can be removed.
For this reason, the water jetting member 5 is formed so as to jet water toward the outer periphery below the horizontal direction, specifically, in a direction of 30° with respect to the horizontal direction.
Here, the water injection direction may be set at right angles to the annular pipe member constituting the water injection member 5, as shown in FIG. It can be set in an oblique direction (in this embodiment, a 45° direction).

By the way, in the slime processing apparatus of this embodiment, the slime rolled up by the water jetted from the water jetting member 5 can be immediately sucked up and removed by the slime suction submersible pump 4, so that it is different from the first embodiment. Although the scraper 6 provided in the slime processing apparatus is not provided, a scraper (not shown) may be provided so as to surround the outer periphery of the water injection member 5.

The other structure and operation of the slime processing apparatus of this embodiment are the same as those of the slime processing apparatus of the first embodiment.

The slime processing device of the present invention has been described above based on the embodiments thereof, but the present invention is not limited to the configuration described in the above embodiments, and the configuration can be changed as appropriate without departing from the spirit. It is something that can be done.

The slime processing device of the present invention can reliably remove the slime deposited in the expanded bottom portion, which has an inner diameter larger than the inner diameter of the shaft portion of the pile hole, without requiring any skill for operation. It can be suitably used in a slime processing device that removes slime deposited in an enlarged bottom part having an inner diameter larger than that of the bottom part.

1 Vertical support member 2 Horizontal support member 3 Submersible pump for water injection 4 Submersible pump for slime suction 5 Water injection member 6 Scraper 7 Counterweight 8 Support leg H Shaft of pile hole K Expanded bottom part

Claims (3)

In a slime processing device for removing slime deposited in an expanded bottom part having an inner diameter larger than the inner diameter of the shaft part of a pile hole,
a rigid vertical support member suspended from the ground and movable horizontally within the shaft of the pile hole;
a horizontal support member attached to the lower end of the vertical support member;
a submersible pump for water injection provided on one side of the mounting position of the horizontal support member and the vertical support member;
a submersible pump for slime suction provided on the other side of the mounting position of the horizontal support member and the vertical support member;
A slime processing device comprising: a water injection member that injects water supplied from the injection water submersible pump in order to stir up slime in the vicinity of the slime suction submersible pump. The slime treatment according to claim 1, wherein the vertical support member is made of a pipe member, and the slime sucked in by the slime suction submersible pump is discharged to the ground via the vertical support member. Device. The water jetting member is provided with a water jetting port for jetting water toward the slime suction submersible pump, and a scraper is provided at a position facing the water jetting member and the slime suction submersible pump with the water jetting member in between. The slime processing device according to claim 1 or 2.

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