JPS6312227Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is used to remove the excavated soil that is transported from underground to the surface when drilling holes in the ground using the auger crew of an earth auger excavator. This relates to earth removal equipment.

One of the construction methods that uses an earth auger excavator
There is a PIP method. In order to improve the construction speed of this PIP method, the inventors first developed a two-shaft PIP machine equipped with two auger screws.

By the way, when drilling a hole in the ground with an earth auger excavator, the excavated earth and sand generated is transported from underground to the surface by the flight of the auger screw. This excavated earth and sand (hereinafter referred to as
(abbreviated as sediment) is scraped off the flight,
The soil is loaded into a dump truck or vessel through an unloading device attached to an auger screw, and then transported out. Conventionally, the one shown in FIG. 1 has been used.

The two-shaft PIP machine A has a drive device (not shown) that rotates two auger screws A2 and A2 on a prop A1 installed on a crawler crane (not shown).
Leader pipes A3, A3 that hold the vertically movable
is installed.

The conventional earth removal device 1 installed in such a two-shaft PIP machine A includes a cylindrical casing 2 into which the auger screws A2 and A2 are inserted, and a slope attached to the opening side of one end of these casings. A slope 3a of the slope portion 3 is inclined downward toward the side facing the support column A1 and the leader pipe A3 (right side in FIG. 1, hereinafter referred to as the front).

In such an earth removal device 1, the earth and sand are slid forward, so when drilling a hole with the two-axis PIP machine A, there must be room for placing a bed cell or a belt conveyor to catch the sliding earth and sand. There was a drawback that a considerable amount of space was required in front of the Augus Screw A2 and A2. Additionally, when attempting to drill a hole close to the border of a neighboring property and drive piles using the PIP method, if there is a building on the neighboring property, the distance that can be approached to the border of the neighboring property will be limited due to the disposal of the excavated soil. There was an inconvenience.

This invention has been made in consideration of the above circumstances, and its object is to provide an earth removal device which enables drilling by Auger Screw to be carried out close to the boundary line between adjacent properties.

This invention will be described in detail below with reference to the drawings.

Figures 2 to 4 show an embodiment of the soil removal device of this invention, and Figure 5 shows the soil removal device installed on a two-shaft PIP machine A.
Reference numeral 11 in the figure is an earth removal device.

The earth removal device 11 is an auger screw A2, A2.
Two cylindrical casings 12, 1 into which are inserted
2, a slope part 14 forming a slope 13 around one end opening of the casings 12, 12, a reversible conveyor 15 provided along the lower edge of the slope 13 of the slope part 14, and each of both ends of the reversible conveyor 15. It consists of working degs 16 provided to sandwich the reversible conveyor between the two, and a holding part 17 for holding and fixing these to the two-axis PIP machine A.

As shown in FIG. 5, this earth removal device 11 is equipped with a two-shaft PIP machine A, and a reversible conveyor installed in the gap between the auger screws A2, A2 and the leader pipes A3, A3.
It is attached so that 5 is positioned.

In this two-axis PIP machine A, the support column A1 is erected on the crawler crane A4;
Leader pipes A3, A3 are attached in parallel on the left and right (in a direction perpendicular to the plane of the paper in FIG. 5). Also, this leader pipe A3, A3
In front of (right side in Figure 5) is the leader pipe A.
3. Auguscrew A in parallel on the left and right like A3
2, A2 is arranged. These auger screws A2, A2 are rotated by a drive device A5 which is attached to the leader pipes A3, A3 so as to be able to move up and down.

The casings 12, 12 of the earth removal device 11 are used to guide the auger screws A2, A2 accurately and vertically to the planned pile core. It also serves to maintain the distance between the creases A2 and A2 at a predetermined distance. This casing 12 is cylindrical, and its inner diameter is slightly larger than the outer diameter of the auger screw A2. Also, casing 12
The upper end opening is cut diagonally so as to coincide with the slope 13 of the slope portion 14.

The slope part 14 is for collecting earth and sand scraped off from the flight A6 of the auger screw A2, and is a slope that slopes downward from the auger screw A2 side toward the leader pipe A3 side (that is, backward) when in use. 13 is formed. This slope 13
is formed surrounding the upper end openings of the two casings 12, 12. A side plate 19 is erected on the periphery of the slope 13 except for the lower edge 18 to prevent the earth and sand scraped from the flight A6 from spilling onto the slope portion 14 other than the lower edge 18 side of the slope 13. being done.

The reversible conveyor 15 is a belt conveyor capable of forward and reverse rotation, and carries out earth and sand sliding down the slope 13 of the slope portion 14 to the left or right. This reversible conveyor 15 has slope 1
It is provided below and along the lower edge 18 of 3.

A plate-shaped baffle plate 20 is erected at the edge of the reversible conveyor 15 on the side of the leader pipe A3. This baffle plate 20 is for preventing earth and sand sliding down from the slope 13 of the slope portion 14 from falling backward (toward the leader pipe A3) over the reversible conveyor 15. In addition, the lower edge 18 of the slope 13
Skirts 21 and 21 are installed along the gap between the belt and the reversible conveyor 15 and the lower part of the baffle plate 20, respectively, so that earth and sand collect on the belt of the reversible conveyor 15.

At both ends of the reversible conveyor 15, there are receiving plates 22, 2.
2 are provided respectively. This receiving plate 22 is for discharging the earth and sand conveyed by the reversible conveyor 15 as far as possible. This receiving plate 22 is gutter-shaped and is rotatable at a predetermined angle about an axis parallel to the rotational axis of the rollers at both ends of the reversible conveyor 15. It is erected and, when in use, is folded down to form an inclined surface that slopes downward from the end of the reversible conveyor 15 toward the front.

This earth removal device 1 is installed at the bottom of the reversible conveyor 15.
1 to the leader pipes A3, A3 of the two-axis PIP machine A is provided.

Further, two working claws 16 are provided at both ends of the reversible conveyor 15 so as to sandwich the ends of the reversible conveyor 15. This work detsugi 1
Reference numeral 6 is a scaffold for workers who scrape off dirt from Flight A6 of Augus Crew A2, and a handrail 23 is provided around it to protect the workers.

In the case of such an earth removal device 11, from the flight A6 of the auger screw A2 to the slope portion 14
The soil scraped off slides down the slope of the slope portion 14 and falls onto the reversible conveyor 15, and is carried out to the right or left by the reversible conveyor 15.
Moreover, since the reversible conveyor 15 is placed in the gap between the auger screw A2 and the leader pipe A3 of the two-shaft PIP machine A, if this soil removal device is installed on the two-shaft PIP machine A, the front of the auger screw A2 There is no need to open a space for processing the excavated earth and sand, and therefore the auger screw A2 can be brought close to the border of the neighboring land to perform drilling.

In addition, since the reversible conveyor 15 can rotate in forward and reverse directions, the direction in which the earth and sand are carried out can be selected as appropriate.Especially at the corners of the site, the reversible conveyor 15 is configured so that the earth and sand are carried out toward the inside of the site. If you drive 15, Augus Creu A2
can be drilled close enough to the corner.

In addition, in the above explanation, the earth removal device 11 attached to a two-shaft PIP machine was explained, but the earth removal device of this invention can be used with one shaft or three or more shafts.
It may also be installed in a PIP machine, in which case the number of casings 12 is the same as the number of auger screws A2.

As explained above, the soil removal device of this invention is
A casing into which the auger screw is inserted, a slope portion formed around an opening at one end of the casing with a slope that slopes downward from the auger screw side toward the leader pipe side, and a slope portion provided along the lower edge of the slope portion. Since it is equipped with a reversible conveyor that is placed in the gap between the auger screw and the leader pipe, the excavated soil carried out by the auger screw is carried out to the left and right behind the auger screw. Therefore, if this earth removal device is attached to an earth auger excavator, it becomes possible to drill holes close to the border of neighboring land.

[Brief explanation of the drawing]

Fig. 1 is a schematic perspective view showing a conventional earth removal device attached to a two-axis PIP machine, and Figs. 2 to 4 show the earth removal device of this invention;
FIG. 3 is a plan view, FIG. 4 is a side view, and FIG. 5 is an explanatory view showing the soil removal device of this invention installed on a two-shaft PIP machine. A...Two-shaft PIP machine (earth auger excavator), A
2...Auguscrew, A3...Leader pipe, A5...Drive device, 11...Earth removal device, 12
... Casing, 13 ... Slope, 14 ... Slope part, 15 ... Reversible conveyor, 18 ... Lower edge.

Claims (1)

[Scope of Claim for Utility Model Registration] An earth removal device attached to an earth auger excavator having an auger screw and a leader pipe installed at the rear of the auger screw and holding the auger screw driving device, A casing into which the auger screw is inserted, a slope portion formed on the circumferential surface of the opening at one end of the casing with a slope that slopes downward from the auger screw side toward the leader pipe side, and a slope portion on the lower edge of the slope portion. A reversible conveyor is provided along the line and placed between the auger screw and the leader pipe, and the excavated earth and sand carried out by the auger screw is discharged through the slope section and the reversible conveyor. An earth removal device characterized by being adapted to do the following: