JPH0753998B2 - Drilling equipment for ground inside caisson - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a device for excavating the ground inside a caisson, and more particularly to a device for moving the excavator to a lower inner wall of a caisson frame and the ground surface.

[Conventional technology]

As shown in Japanese Examined Patent Publication No. Sho 60-22132, an excavator is provided with an annular rail attached to the lower part of the inner wall of the caisson frame, and the excavator is moved in the circumferential direction along the annular rail to excavate the internal ground of the caisson. It has been known.

[Problems to be Solved by the Invention]

Spring water may accumulate in the ground inside the caisson, and the excavator may also excavate in water.Therefore, the excavator was pulled up to the surface for inspection and repair, and it was again placed below the inner wall of the caisson frame. It is necessary to hang it and set it on an annular rail.

For this reason, in the above-mentioned excavator, the excavator must be set or removed from the annular rail by a diver or the like, which is very troublesome and difficult.

Then, it becomes clear that the present invention provides an excavation device for ground inside the caisson, which is capable of solving the above-mentioned problems.

[Means and Actions for Solving the Problems]

A guide rail is partially discontinuously installed along the lower part of the inner wall of the caisson frame, and the moving guide rail facing this discontinuous part is vertically movable along the vertical guide rail provided on the inner wall of the caisson frame to guide the excavator body. The excavator body can be moved along the rails and the movement guide rails so that the excavator body can be transferred to the guide rails and the movement guide rails and can be pulled up to the ground surface together with the movement guide rails.

〔Example〕

A pair of upper and lower guide rails 3, 3 are formed in the lower part of the inner wall 2 of the caisson body 1 in the circumferential direction.
Is partially discontinuous, and a pair of upper and lower movement guide rails 4, 4 are located on the discontinuous portions 3a, 3a to form an annular rail.

A pair of vertical moving frames 5, 5 are connected to the rear surfaces of the pair of upper and lower moving guide rails 4, 4 respectively.
The guide rollers 6 are attached above and below, respectively, and the guide rollers 6 are slidable along the vertical guide rails 7 formed on the inner wall 2 of the caisson frame 1, and the pair of upper and lower moving guide rails 4, 4 are The pair of upper and lower guide rails 3, 3 are movable between a lower position that matches the discontinuous portions 3a, 3a and the ground surface.

Guide rollers 9 are attached above and below the back of the excavator body 8, and the guide rollers 9 are slidable along the guide rails 3 and the moving guide rails 4. The excavator body 8 has a bucket type excavation not shown. The machine is installed.

Because of this, the guide roller 9 of the excavator body 8 is slid on the moving guide rail 4, and the excavator body 8 and the moving guide rail 4 are simultaneously pulled up along the vertical guide rail 7 to bring the excavator to the surface. Can be raised up to.

Further, the excavator body 8 and the guide rails 4 are simultaneously moved downward along the vertical guide rails 7 to move the guide rails 4.
Is aligned with the discontinuous portion 3a of the guide rail 3 and the guide roller 9 of the excavator body 8 is slid on the guide rail 3, the excavator body 8 can be moved along the guide rail 3.

Therefore, set the excavator on the guide rail 3,
You can easily remove and remove it.

〔The invention's effect〕

Since the excavator main body 8 can be moved over the movement guide rails 4 and 3, and the movement guide rail 4 can be moved to the ground along the vertical guide rails 7, the excavator main body 8 can be moved along with the movement guide rails 4 on the ground surface. It can be pulled up to the guide rail 3 and transferred to the guide rail 3, and the work of setting the excavator on the guide rail 3 and removing it becomes easy.

[Brief description of drawings]

1 shows a front view, FIG. 2 is a plan view, FIG. 3 is a perspective view, and FIG. 4 is a sectional view of a bearing portion of an excavator body. 1 is a caisson frame, 2 is an inner wall, 3 is a guide rail, 4 is a moving guide rail, 7 is a vertical guide rail, and 8 is an excavator.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Katsu Hirosawa 2-3-3 Akasaka, Minato-ku, Tokyo Komatsu Ltd. (72) Inventor Kaoru Tanaka 2-3-6 Akasaka, Minato-ku, Tokyo Stocks Komatsu Ltd. (56) References Japanese Patent Publication Sho 61-10611 (JP, B2)

Claims (1)

[Claims] 1. A caisson body 1 has a guide rail 3 attached to a lower portion of an inner wall 2 in a discontinuous manner along a circumferential direction, and a movable guide rail 4 facing a discontinuous portion 3a of the guide rail 3 has an inner wall of the caisson body 1. 2. An excavation device for ground inside a caisson, which is vertically movable along a vertical guide rail 7 provided in 2, and an excavator body 8 is movable along a guide rail 3 and a movable guide rail 4.