JPH04339921A - Deep foundation excavating equipment - Google Patents

Abstract

PURPOSE:To excavate a deep foundation by moving an excavator upward and downward up to an estimated depth in a hole with the remote operation of an automatic control mechanism from a ground level, in a zone under bad condition like a mountain area obliquesection. CONSTITUTION:On a bracket 6 suspended on the upper sections of four supports 2 erected on a ground level, a winding machine 7 and a take-up wheel 18 are fixed, and under the bracket 6, a plurality of guide shafts 9 are connected to, and in the axial direction of the respective shafts, rails 11 are continuously set, and an ascending or descending holder 14 to be always engaged with the rails set, and the winding machine 7 via a wire 16 and the take-up wheel 18 via a wire 19 are connected to each other, and the holder 14 is contrived to be moved upward or downward along the guide shafts 9. With the upper section of the ascending or descending holder 14, an excavator main-body 15 is combined. To the tip sections of the guide shafts 9, an anchor 22 is connected, and its sharp end 23 is confronted with earth surface in a hole, and a bracing plate 24 fixed on the rear surface of the anchor section is confronted with a hole wall, and the stability in the axial direction of the guide shafts 9 is protected. The working of the winding machine, the ascending or descending holder, the excavator main-body, and the like is performed with the remote operation of an automatic control mechanism from a ground level outside the hole.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deep foundation excavation device for use in areas with poor environmental conditions such as mountainous slopes.

0002

[Prior Art] Conventionally, deep hole excavation can be carried out either manually or mechanically. In the latter case, a backhoe or telescopic arm type clamshell is used as an external type, and a small backhoe or a retractable arm type clamshell is used as an internal type. Supported types are also known. Not to mention manual excavation, mechanical excavation is also concerned with deep foundation excavation in areas such as mountainous slopes, where anti-external type machines are not suitable, and there is an urgent need to develop improved construction methods while focusing on internal excavation functions. It is said that

0003

[Problem to be solved by the invention] In recent years, the reality of various industries is that rapid progress has been remarkable in all fields.For example, in the electric power field, as power sources become remoter and equipment becomes larger in capacity, large-capacity As long-distance power transmission becomes necessary, and the transmission line route is selected taking into consideration the social environment and local conditions, the construction of steel towers has become inevitable, as it has no choice but to use slopes in mountainous areas. The supporting layer of the steel tower is deep, and deep foundations will be important.

[0004] In view of these circumstances, even when converting from manual excavation methods to mechanical methods, it is necessary to prevent dangers such as collapse of earth and sand due to machine overturning, falls, and vibrations, and to ensure stable installation conditions during construction. Although this is considered essential, it must be said that satisfactory construction is extremely difficult using existing construction methods.

[0005]

[Means for Solving the Problems] Therefore, the present invention provides a method for excavating deep foundations safely and with a small number of people, even in steep mountain slopes, without the above-mentioned dangers and with minimal change in character from the standpoint of preserving the natural environment. It was completed with the aim of making it possible to construct it in the field, and the details of this embodiment will be explained below with reference to the drawings.

[0006] Supports 2 are fixed upright at four locations on the outer periphery of the ground of a predetermined excavation hole 1 at a pre-planned and selected excavation target area,
Frame rods 3 and 4 are fixed to the upper end of each column to form a parallelogram shape, and a bracket 6 is installed via a hanging member 5 on the long sides of the opposing frames 4 and 4. 7 is a winding machine fixed to the bracket 6, and 8 is a hydraulic motor of the winding machine 7.

A plurality of guide shafts 9 made of square pipes are connected to the lower part of the bracket 6 via flanges 10, and rails 1 are connected in series in the axial direction on a pair of opposing surfaces of the shafts 9.
1 is provided protrudingly. A lifting holder 14 equipped with guide wheels 12 and 13 that constantly engages with the rail 11 is provided on the guide shaft 9, and the excavator main body 15 is assembled to this holder. The holder 14 is connected to the winding machine 7 via a wire 16, and an arm 17 is fixed and protrudes from the holder 14.
is connected to a wire 19 mounted on a winding wheel 18 mounted on the bracket 6. 20 is a hydraulic motor for winding the wire 19.

A telescopic cylinder 21 is provided at the tip of the guide shaft 9.
An anchor 22 with a hole inside is connected, and its sharp end 23 faces the ground surface inside the hole. A retaining plate 24 is fixed to the back of the anchor part, and a lifting holder 1 is mounted facing the inner wall of the excavation hole 1.
4. Restricts backward rocking. The excavator main body 15 is the boom 2
5, an arm 26, a bucket 27, etc., a known anti-internal type is suitable. In addition, the earth retaining wall 28 for excavation may be made of sheet piles, liner plates, or as described in Japanese Patent Application Laid-Open No. 1-1119.
The measures are taken according to the conditions, such as the construction method described in Publication No. 87.

[0009] In this device, an operator on the ground remotely controls the hoisting machine 7, lifting holder 14, excavator body 15, and other related operations using an automatic control mechanism while looking at a monitor drawing. The system or circuit is not shown or explained.

0010

[Operation] Since the present invention is constructed as described above,
The excavator main body 15 is fixed to a lifting holder 14 which is connected via a wire 16 to a hoisting machine 7 on a bracket 6 attached to the upper end frame rod 4 of a support column 2 upright on the ground. The holder is constantly engaged with the rail 11 of the guide shaft 9 via the guide wheels 12 and 13, and moves up and down together with a stable up and down movement, and the up and down movement of the holder is carried out by the winding wheel 18 on the bracket 6. Excavation work at a desired depth is carried out while being stably assisted via a mounted wire 19.

In this device, all related movements such as the operation of the lifting holder 14 and the excavation of the excavator main body 15 in the hole are remotely controlled by an automatic control mechanism from the ground, and the machining depth of the excavation hole 1 is controlled by a remote control mechanism. Accordingly, downward excavation is performed, and the guide shaft 9 made of a square pipe is connected and increased as necessary to cope with changes in the excavation depth.

[0012] As the excavation work progresses, the earth retaining wall 28 of the excavation hole 1 is constructed downward at any time to prevent landslides, and the remaining soil from the excavation is placed above and below the lifting holder 14. It is assumed that during operation, the excavator will carry out the work out of the hole.

During excavation work, in order to prevent instability of the guide shaft 9 such as vertical or lateral vibration due to the movement of the excavator main body 15, which is a heavy object, the anchor 22 at the tip of the guide shaft is a telescopic cylinder. 21, its sharp end 23 is pressed against the bottom of the hole, and furthermore, in the rear direction, a retaining plate 24 fixed to the anchor part faces the hole wall and absorbs the recoil and shock caused by the operation of the excavator body. That's what I do.

[0014]

[Effects of the Invention] As described above, the present invention aims to provide a means for excavating deep foundations in areas with poor environmental conditions such as mountainous slopes, without installing the excavator itself on the ground surface. This machine is designed to be able to move up and down in a deep foundation drilling hole according to the depth of the excavation, and the operator remotely controls the machine from the ground using an automatic control mechanism. It only issues commands for operation,
A lifting bracket is installed on the guide shaft that connects to the bracket suspended from the support above ground, and the excavator itself is attached to this bracket, so there is no need to worry about the excavator falling from the ground or landslides. The remaining soil in the hole was also discharged, and the vertical movement of the lifting holder, which is constantly engaged with the rails protruding in the axial direction along the guide shaft, was ensured, and the main body of the excavator was cleared. During operation, safe and normal deep foundation excavation is possible under stable conditions inside the hole.

[Brief explanation of drawings]

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

FIG. 2 is a side view showing a state in which the excavating machine main body is assembled.

FIG. 3 is a side view of the lifting holder portion of the present invention.

FIG. 4 is a diagram showing the relationship between the guide shaft and the lifting holder of the present invention.

FIG. 5 is a partially cutaway side view of the anchor portion of the present invention.

[Explanation of symbols]

1 Drilling hole 2 Pillar 3 Frame rod 4 Frame rod 5 Hanging member 6 Bracket 7 Winding machine 8 Hydraulic motor 9 Guide shaft 10 Flange 11 Rail 12 Guide wheel 13 Guide wheel 14 Lifting holder 15 Excavator body 16 Wire 17 Arm 18 Take-up wheel 19 Wire 20 Hydraulic motor for winding 21 Telescopic cylinder 22 Anchor 23 Sharp end 24 Brace board 25 Boom 26 Arm 27 Bucket 28 Earth retaining wall

Claims (1)

[Claims] [Claim 1] In a pre-planned and selected excavation target area, four pillars are erected on the outer periphery of the ground of a predetermined excavation hole, the upper ends of each pillar are connected in a parallelogram shape, and a bracket is hung. A hoisting machine is provided with a lifting holder that connects a plurality of guide shafts downwardly and keeps engaged with a series of rails protruding from each shaft at all times, and the excavator main body is assembled to the holder and fixed on the bracket. The winding device and the winding device are connected to the holder, and the anchor is connected to the guide shaft so as to face the ground surface in the hole. A retaining plate is fixed to the back of the anchor part, and the winding machine, lifting holder, excavator main body, and other related items are attached. A deep foundation excavation device characterized in that its operation is remotely controlled by an automatic control mechanism from outside the hole.