JPH08282945A - Elevator device for deep foundation - Google Patents

Abstract

PURPOSE: To provide an elevator device for a deep foundation wherein a worker or the like can be quickly lifted without generating any obstacle in machine excavation by a clamshell. CONSTITUTION: An elevator device main unit 1 for a deep-foundation, comprising a strut 11, overhung part 12 provided to protrude sideward in an upper part of the strut, body of equipment 13 suspended from the overhung part and a lift means 14 for lifting the body of equipment, is arranged movably along a guide rail 2 provided in an upper edge part of a caisson type pile foundation hole H.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deep foundation elevator system.

[0002]

2. Description of the Related Art One of the methods for forming columnar piles is the deep foundation method. In this deep foundation method, a hole or a segment made of corrugated iron plate and chevron steel is used to excavate a hole manually, and after reaching the supporting ground, rebar is assembled,
It is a construction method in which concrete is poured while removing the mountain stoppers to produce piles. Usually, excavation is performed with two or three workers in the hole, and when the ground is soft, a scoop is used, and when the ground is hard, a rock drill or the like is used. Further, the excavated earth and sand is carried out of the hole by winding a small bucket attached to the tower assembled on the deep foundation hole with a winch.

[0003]

Conventionally, when an operator enters into a deep foundation hole, a trap is attached to the side wall of the deep foundation hole. However, as the depth of the deep foundation hole becomes deeper (for example, it may become about 25 m), the burden on the worker during lifting and lowering becomes great, and the time required for lifting and lowering also becomes long. The use of elevator equipment is also considered as a means for coping with such a problem.

However, when the elevator device is installed,
In the case of a deep foundation with a diameter of the deep foundation hole of about 4500 mm, the elevator device and the clam cell for excavating earth and sand carry out interference, which causes another problem that mechanical excavation using the clam cell cannot be performed.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide an elevator for a deep foundation capable of quickly raising and lowering a worker or the like without causing any trouble in mechanical excavation by a clam cell. To provide a device.

[0006]

In order to achieve the above object, in the invention according to claim 1, a pillar, an overhang portion provided on an upper portion of the pillar so as to project laterally, and a suspension from the overhang portion. An elevator main body for a deep foundation including a housing that can be lowered and an elevating means for elevating and lowering the housing is arranged so as to be movable along a guide rail provided at an upper edge portion of the deep foundation hole. And

According to a second aspect of the invention, the guide rail is arranged so as to extend in the radial direction with respect to the deep foundation hole.

According to a third aspect of the present invention, a sloping portion is provided at a base end portion of the supporting column so as to project laterally from the supporting column so as to be positioned substantially below the overhang portion. To do.

[0009]

In the present invention, when an operator or equipment is sent into the deep foundation hole or conversely is pulled up from the deep foundation hole, the deep foundation elevator device main body is moved along the guide rail to expose the deep foundation hole. In this state, the housing suspended from the overhang portion is moved up and down by using the lifting means.

In the excavation work using a normal clam cell, the deep foundation elevator device body is moved along the guide rail so as to be separated from the deep foundation hole. Therefore, in this case, the deep foundation elevator device main body and the clam cell do not interfere with each other, and there is no problem in mechanical excavation using the clam cell.

[0011]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view of an elevator device for deep foundation according to the present invention, in which reference numeral 1 is an elevator device body for deep foundation and 2 is an elevator device body for deep foundation 1 provided at an upper edge portion of a deep foundation hole. Is a guide rail that guides in a direction toward and away from the deep foundation hole H.

The elevator device main body 1 for the deep foundation is provided with a pillar 11.
An overhang portion 12 provided on the upper portion of the column 11 so as to project laterally; a housing 13 suspended from the overhang portion 12; and an elevating means 14 for elevating the housing 13.

The pillar 11 is formed by assembling a large number of shaped steels in a substantially triangular shape in a side view, and wheels 11a, ... It is placed open. Further, the wheels 11a, ... Are connected to a drive source 15 such as a hydraulic motor via a power transmission means (not shown), and the power of the drive source 15 causes the wheels 11a.
a is rotated on the guide rail, and the deep foundation elevator device main body 1 is moved and operated. The overhang portion 12 is formed by assembling a large number of shaped steels in a square shape, and pulleys 12a, 1 for suspending the housing 13 are provided therein.
2a is attached. Also, the overhang part 1
2 is set so as to face the deep foundation hole H side when the deep foundation elevator device body 1 is set on the guide rail 2.

The housing 13 is sized so that a worker, equipment for excavation, etc. can be carried into the housing 13, and the engaging portion 13a attached to the upper surface has the pulleys 12a, 1a.
It is suspended and supported by a wire 13b extending downward from 2a. The housing 13 is lifted and lowered by the wire 13b being wound and unwound by the lifting means 14 which is built in the bottom portion of the column 11 and includes a hydraulic motor and a winch that is rotationally driven by the hydraulic motor. To be done.

A ramp portion 16 is provided at the base end of the column 11.
Is provided so as to project laterally from the column 11 so as to be positioned substantially below the overhang portion 12. As shown in FIG. 1, the trap portion 16 is used when an operator or the like enters the inside of the housing 13 or descends from the housing 13 when the housing 13 is hung up to the upper end position.

Further, a tilt stopper is provided at the bottom rear portion of the column 11, so that the column 11 does not fall even when a moment is applied to the column 11 when suspending the housing 13 from the overhang portion 12. It has become. The fall stop is configured by being fixed to the bottom side portion of the column 11 so that the L-shaped member holds the guide rail 2 from the side. Further, a cushioning member such as rubber is provided inside the stopper at the end of the guide rail 2 so that the deep foundation elevator device body 1 can be prevented from rushing against the stopper.

Therefore, according to the deep foundation elevator device having the above structure, when the worker or the equipment is fed into the deep foundation hole H, the drive source 15 is driven and the deep foundation elevator device main body 1 is illustrated. As shown in 1, the guide rail 2 is moved to its tip.

At this time, the housing 13 hung from the overhang portion 12 is located in the deep foundation hole H, and the operator or the like rides into the housing 13 using the trap portion 16, and then the lifting means 14 is used. The operator can be brought to the bottom of the deep foundation hole H by driving the and lowering the housing 13.

On the other hand, in the case of advancing the work by using the clam cell in the normal excavation work, with the housing 13 pulled up to the upper end position, the deep foundation elevator device body 1 is installed on the guide rail 2 as shown in FIG. It is retracted along the direction away from the deep foundation hole H. At this time, the deep foundation elevator device body 1 including the housing 13 is not located in the deep foundation hole H.
Therefore, in this case, the deep foundation elevator device body 1 and the clam cell do not interfere with each other, and mechanical excavation using the clam cell does not cause any trouble.

When the worker or equipment is pulled up from the deep foundation hole H, the deep foundation elevator device main body 1 is moved to the tip of the guide rail 2 to move the housing 13 into the deep foundation hole H as described above. In this state, the casing 13 is lowered in this state to reach the bottom of the deep foundation hole H, the operator is put in the casing 13, and then the raising and lowering means 14 raises the casing 13, thereby deepening the worker. It can be pulled up from the foundation hole H.

The present invention is not limited to the above-described embodiment, but the shapes of the columns 11 and the overhang portions 12, the number of the housings 13 and the like can be appropriately changed in practice. For example, in the above-described embodiment, in order to move the deep foundation elevator device body 1, the drive source 15 provided in the column 11 is used.
But it is not limited to this,
The deep foundation elevator device main body 1 may be moved by a pulling means provided separately from the column 11.

Further, although the trap portion 16 is of a fixed type, it is not limited to this, and it is also possible to use a type in which the support portion 11 is tilted toward the housing 13 side by utilizing a hinge portion.

Further, in the above-mentioned embodiment, the guide rail 2 is extended in the radial direction of the deep foundation hole H. However, the present invention is not limited to this, and the guide rail 2 is arranged along the tangential direction of the deep foundation hole H. May be. In this case, the traveling direction of the deep foundation elevator device body 1 is set to the direction orthogonal to the direction in which the housing 13 is provided.

[0024]

According to the first aspect of the present invention, the elevator apparatus main body can be located inside the deep foundation hole only when necessary, and can be located outside the deep foundation hole when not required. Therefore, in the excavation work using a normal clam cell, the deep foundation elevator device body and the clam cell do not interfere with each other, and mechanical excavation using the clam cell does not cause any problems. Further, as compared with the conventional raising and lowering using the trap, the raising and lowering can be performed safely and in a short time, and the physical strength of the worker is less consumed.

According to the second aspect of the present invention, since the guide rail is arranged so as to extend in the radial direction with respect to the deep foundation hole, it is possible to travel the elevator apparatus main body for a short distance.
It is possible to switch between the case of being located inside the deep foundation hole and the case of being located outside the deep foundation hole.

According to the third aspect of the present invention, since the ramp portion is provided at the base end portion of the support column so as to be located substantially below the overhang portion, the projection portion is provided laterally from the support column. Will be easier.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of the present invention.

FIG. 2 is a plan view of the embodiment.

FIG. 3 is a side view illustrating the operation of the present invention.

[Explanation of symbols]

 1 Elevator device main body for deep foundation 2 Guide rail 11 Strut 12 Overhang portion 13 Enclosure 14 Elevating means 15 Drive source 16 Talap portion H Deep foundation hole

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Osamu Takano 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Construction Co., Ltd. (72) Inventor Issei Taguchi 3-1-1 Komontocho, Hakata-ku, Fukuoka Inside Guchi Industry Co., Ltd.

Claims (3)

[Claims] 1. A deep foundation comprising a column, an overhang portion provided on an upper portion of the column so as to project laterally, a housing suspended from the overhang portion, and an elevating means for elevating and lowering the housing. An elevator apparatus body for a deep foundation, wherein the elevator apparatus main body is movably arranged along a guide rail provided at an upper edge portion of the deep foundation hole. 2. The elevator device for deep foundation according to claim 1, wherein the guide rail is arranged so as to extend in a radial direction of the deep foundation hole. 3. The deep foundation elevator apparatus according to claim 2, wherein a lap portion is provided at a base end portion of the pillar so as to project laterally from the pillar so as to be located substantially below the overhang portion. Elevator device for deep foundations that is characterized by being.