JPH023877B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a shaft excavation device using a grab bucket and a kibble (container for excavated earth and sand).

(Prior Art) A conventional shaft excavation device of this type will be explained based on FIGS. 3 and 4. The conventional device has 1 kibble in the center.
an annular scaffold 3 having a passage opening 2; a rail 4 having a circular planar shape attached to the scaffold 3 along the bottom surface of the scaffold 3; and at least a pair of circular motion wheels running within the rail 4. 5, a motor (not shown) for driving the circular motion wheels 5, a swing box 6 suspended by the circular motion wheels 5, a winch 7 provided in the swing box 6, and a winch 7. A grab/bucket 9 is suspended by a winding 8, and an operating device (not shown) for controlling the motor for the circular motion wheel 5 and the winch 7 is provided in the scaffold 3. , and operated by a worker inside the scaffold 3.

Further, the hanging rope 10 of the kibble 1 is wound around a shaft hoist (not shown) on the ground while passing through the passage opening 2 of the scaffold 3. Incidentally, the scaffold 3 is also suspended by another shaft hoist on the ground, as is known.

To explain the excavation work using the above-mentioned conventional shaft excavation equipment, when the shaft 11 has been dug down to a certain extent (15 to 24 m or more), the empty kibble 1
is lowered from the ground side through the center of the passage port 2 of the scaffold 3 to near the bottom of the shaft 11,
Immediately before the kibble 1 lands in the shaft 11, workers (3 to 4 people) who have entered the shaft 11 in advance position the kibble 1 directly under the movement trajectory of the grab bucket 9, Push the kibble 1 sideways as shown by the arrow. In this way, kibble 1
After locating the kibble at an appropriate location, the bottom of the shaft 11 is dug by lowering the grab bucket 9 at a location where there is no kibble 1. Thereafter, the grab bucket 9 holding the excavated earth and sand is raised by the winch 7, and the swing box 6 is rotated along the rail 4. When the grab bucket 9 is located above the kibble 1, the grab bucket 9 The earth and sand in the bucket 9 is allowed to fall into the kibble 1. The same excavation work is repeated thereafter, and when Kibble 1 is full of earth and sand, it is lifted to the ground. When the empty kibble 1 is placed in the shaft 11 again, it is placed in a place dug deeper by the grab bucket 9. Thereafter, similar operations are repeated to open the shaft 11 to a desired depth. Note that concrete walls 12 and the like are fitted into the peripheral wall surface of the shaft 11 in order from the top.

(Problems to be solved by the invention) In the above-mentioned conventional shaft drilling equipment, the grab
The bucket 9 can only move in a circular direction along the rail 4 in a horizontal plane, so the worker has to move the kibble 1 in the shaft 11 as described above, and when the kibble 1 is shaken, etc. is extremely dangerous. In particular, when the inner diameter of the shaft 11 is small (approximately 3.8 m), the kibble 1 generally has a height of approximately
1.5m and a diameter of about 1m, and the maximum opening width of Grab Bucket 9 is also large, about 1.4m, so the evacuation area for workers is very narrow. was waved,
There is a risk that a worker may be caught between the kibble 1 and the grab/bucket 9, and the reality is that underground workers are always in a dangerous situation when loading waste.

The present invention was made to solve such conventional problems, and its purpose is to be able to move grab buckets in all directions within a shaft, and to move kibble to a desired location within the shaft by remote control. To provide a shaft excavation device that can be landed at a location and eliminates the need for placing a worker at the bottom of the shaft.

(Means for Solving the Problems) The present invention comprises an annular scaffold having a kibble passage opening in the center, a planar circular rail attached to the bottom of the scaffold, and a self-propelled structure that runs on the rail. a plurality of circular motion wheels, and a plurality of straight lines that are each suspended horizontally and parallel to each other by the circular motion wheels, and that are integrated with each other and that form a passage space for the kibble therebetween; A rail, a plurality of self-propelled linear motion wheels running on each of the linear rails, a swing box suspended by each of the linear motion wheels, a winch provided in the swing box, and the winch. a grab bucket suspended by windings of the swivel box, and an operating device disposed within the scaffold for operating each of the circular and linear wheels and the winch; This is a shaft excavation device that has a roller that guides the kibble rope at the contact part with the rope.

(Function) The swing box and the grab bucket suspended by the winch therein can move along both the circular rail and the straight rail, so the entire horizontal direction within the shaft can be moved. In addition, the grab bucket can also be moved up and down, making it possible to move in three dimensions. Therefore, even if the kibble is located anywhere in the shaft, waste can be loaded into the kibble from the grab bucket.
In addition, even if the inner diameter of the shaft is small, if it is necessary to push the kibble into a corner of the shaft before excavation with a grab/bucket, the swing box can be used to push the kibble hanging rope to the side. This allows the kibble to be moved towards the desired corner.

(Example) The present invention will be described below based on an example shown in FIGS. 1 and 2. Note that the same reference numerals will be used to describe the same components as those in the prior art.

The shaft excavation device according to the present invention includes an annular scaffold 3 having a passage port 2 for kibble 1 in the center like the conventional one, and a circular shape in a horizontal plane that is attached to the scaffold 3 along the bottom surface of the scaffold 3. It is equipped with a rail 4.
The device of the present invention further drives a plurality of circular motion wheels running within the rail 4, that is, a pair of integrated circular motion wheels 5 and another circular motion wheel 5a, and the circular motion wheels 5, 5a. For example, a first motor (not shown) attached to the circular motion wheel 5, and a plurality of linear rails 20 suspended horizontally and parallel to each other by each of the circular motion wheels 5, 5a. 21.
The straight rails 20 and 21 form a passage space S for the kibble 1 between them, and
They are integrated with each other by appropriate members. The device of the present invention also includes a plurality of linear motion wheels 24 running on each of the linear rails 20 and 21;
and a second motor (not shown) attached thereto to drive the linear motion wheels 24. A swing box 6 similar to the conventional one is suspended from each of the linear motion wheels 24, a winch 7 is provided in the swing box 6, and a grab/bucket 9 is attached to the end of the winding 8 of the winch 7. It is suspended. In the present invention, an operating device (not shown) for controlling the first and second motors and the winch 7 includes:
It is provided within the scaffold 3. Also,
According to the invention, the rotating box 6 is configured to include the kibble 1
It has ropes 25 and 26 that guide the hanging rope 10 at the contact portion with the hanging rope 10.

As is clear from the configuration of the above embodiment, when the circular motion wheels 5, 5a run along the rail 4, the linear rails 20, 21 perform circular motion in a horizontal plane, and As the linear motion wheels 24 travel, the swing box 6 performs a combination of circular motion and linear motion. Therefore, the turning box 6 can move in all directions within the horizontal plane. Therefore, the grab bucket 9 can be moved up and down at any position within the shaft 11, and is moved three-dimensionally. Therefore, no matter where the kibble 1 is placed in the shaft 11, it is possible to load waste into it. In addition, if the kibble 1 gets in the way of digging by the grab bucket 9, the rotating box 6 pushes the hanging rope 10 toward the corner of the shaft 11 just before the kibble 1 lands in the shaft 11. , Kibble 1 can be placed at the corner of the shaft 11. At that time, the rollers 25 and 26 are connected to the rotating box 6 and the hanging rope 1.
Prevents zero friction. All of these operations can be performed remotely from within the scaffold 3.

(Effects of the Invention) As explained above, in the present invention, a straight rail is added below the circular rail, and the rotating box that supports the grab/bucket moves in all directions on a horizontal plane, and the rotating box allows the kibble to be moved in all directions on the horizontal plane. Since the hanging rope can be pushed in a desired direction, the grab bucket and kibble can be positioned at the desired location by remote control, eliminating the need for workers to be stationed underground in the shaft. As a result, work efficiency is improved and work safety is ensured.

[Brief explanation of drawings]

FIG. 1 is a vertical cross-sectional view of a shaft excavation device according to an embodiment of the present invention, FIG. 2 is a cross-sectional view of FIG. 1,
Figure 3 is a longitudinal cross-sectional view of a conventional shaft excavation device;
The figure is a - sectional view of FIG. [Explanation of symbols], 1... Kibble, 2... Passing gate,
3...Scafode, 4...Circular rail, 5,
5a... Circular motion wheel, 6... Swivel box, 7... Winch, 8... Winding wire, 9... Grab/bucket, 1
0... Hanging rope, 11... Shaft, 12... Concrete wall, 20, 21... Straight rail, 24...
...Linear motion wheels, 25, 26...Rollers, S...
passing space.

Claims (1)

[Claims] 1. An annular scaffold installed in a shaft with a kibble passage opening in the center is provided with a rail with a circular plane along the bottom surface of the scaffold, and the rail has a plurality of circular motions driven by a motor. A plurality of linear rails are suspended horizontally and parallel to each other from each of the circular motion wheels in such a manner as to secure a passage space for the kibble, and each linear motion wheel driven by a motor is mounted on the linear rails. A swing box with a built-in winch is suspended from each linear motion wheel, a grab bucket is suspended from the winding of the winch, and each of the motors is remotely controlled on the scaffold. The grab/bucket is configured to be able to move arbitrarily within the shaft via a swing box by driving the circular motion wheels and the linear motion wheels, and the swing box is suspended from the bottom side of the shaft during the movement. 1. A shaft excavation device characterized by being provided with a guide roller that pushes a hanging rope of kibble and moves and installs the kibble at a desired position.