JPH09279979A - Elevating device for horizontal boring machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To construct a side wall part close to the earth retaining pit of a shaft by arranging a boring machine on a frame cantilever-likely supported with a pillar so that the boring direction is outside the elevating guide face of the pillar. SOLUTION: A cylindrical supporting part 2a provided on the rear end part of a frame 2 is fitted into a pillar 1 vertically provided in a shaft T, capably of being smoothly vertically moved cantilever-likely. A boring machine B pressing in a pipe from left to right in parallel with the center line is loaded on the frame 2. A jack 8 is provided on the extreme end of the frame 2, and a jack 6 is provided on the rear end of the cylindrical supporting part 2a. The frame 2 is stopped on the desired position, the frame 2 is stabilized by the reaction receiving jack 6 and the jack 8, and the horizontal boring machine B is operated so as to horizontally press a steel pipe in the earth. When the press-in is completed, the jacks 6, 8 are loosened, the frame 2 is moved vertically by a winch 10, and a steel pipe is similarly again pressed in the earth on the next position. By repeating the above-mentioned operation, a side wall part is constructed in the earth.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lifting device for vertically moving a horizontal boring machine for horizontally press-fitting a pipe such as a steel pipe into the ground to place the pipe in a press-fitting position.

[0002]

2. Description of the Related Art As an auxiliary construction method for excavating a tunnel across roads, railways or rivers, as shown in FIGS. 5 and 6, a large number of steel pipes P are horizontally drilled. A method (pipe roof method) is known in which a primary lining is performed by sequentially press-fitting one machine B in parallel and horizontally in the destination.

In the above construction method, when the side wall body Ka is formed of the steel pipe P, the horizontal boring machine B is installed in the steel pipe P.
Of the upper wall Kb
When constructing, the horizontal boring machine B needs to be moved laterally.

Therefore, conventionally, in the case of forming the side wall body Ka, four or more columns 32 are erected vertically around the pedestal 31, and the pedestal 31 can be raised and lowered by the chain block 33 on these columns 32. When the horizontal boring machine B is placed on the pedestal 31 and sequentially moved downward or upward using the supported lifting device, and when the upper wall body Kb is formed,
Rails are laid in the direction in which the steel pipes P are arranged, and the horizontal boring machine B is laterally fed along the rails.

[0005]

In the structure of the above-mentioned conventional lifting device, since it is necessary to provide the support columns 32 along the upset H of the mountain retaining pile Ya of the vertical shaft T, the mountain retaining pile is located at the site boundary. Y
In the case where a is cast, the pillar 32 along the upset H of the mountain retaining pile Ya becomes an obstacle and the side wall body Ka cannot be constructed in the immediate vicinity of the site boundary. There is. There is no problem in forming the upper wall body Kb.

[0006]

In order to solve the above problems, a lifting device for a horizontal boring machine according to the present invention comprises:
A pedestal on which a horizontal boring machine is placed is supported so as to be vertically movable on columns vertically erected in a shaft or the like.
An elevating device for a horizontal boring machine provided with an elevating means for elevating and lowering the gantry along a column, wherein the gantry is vertically guided with one side edge along the boring direction of the horizontal boring machine along the boring direction of the column. It is arranged so as to be arranged outside the surface.

[0007] It is preferable to guide the guide members provided on the upper and lower portions of the cylindrical support portion, which is fixed to the support, to the guide surface of the support so that the pedestal can be raised and lowered. The gantry can be cantileveredly supported by one column.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described based on examples with reference to the drawings. 1 and FIG.
Is a support. The pillar 1 is the abutment H of the Yamadome piles Ya and Yb.
It is erected vertically in the vertical shaft T at a great distance from. The cross-sectional shape of the pillar 1 is quadrangular. A mast such as a tower crane can be used for the pillar 1, but the pillar 1 may be designed and manufactured for a lifting device, and the cross-sectional shape is not limited to the above and is arbitrary.

Reference numeral 2 is a mount. The gantry 2 is formed in a substantially long shape with its lateral width sufficiently larger than that of the support column 1. The cylindrical support portion 2a provided at the rear end portion on the left side in FIGS. It is supported in a cantilevered manner so that it can move up and down together. The cylindrical support portion 2a has a rectangular cross-sectional shape that is slightly larger than the support column 1, and has guide members 3 such as guide rollers provided on the upper and lower portions of the four inner surfaces of the support column 1a.
The guide surface 1a formed on each of the outer surfaces of the upper and lower surfaces smoothly moves up and down.

FIG. 2 of the center line CL along the length of the gantry 2.
Horizontal boring machine B is installed on the upper side, and center line C
The lower side of L in FIG. 2 is the work scaffold 2b. The boring direction of the horizontal boring machine B is the center line CL of the gantry 2.
The horizontal boring machine B is parallel to, and pushes the pipe from left to right in FIGS. 1 and 2 to press it into the ground.

The pedestal 2 has its center line CL aligned with the center line of the column 1, and the side edge 2 on the horizontal boring machine B side along the boring direction of the horizontal boring machine B.
c is provided outside the elevating guide surface F (guide surface 1a) of the pillar 1 along the boring direction (on the side of the mountain retaining pile Ya in FIG. 2).

A reaction force receiver 7 having a reaction force receiving jack 6 is provided at the rear end of the support portion 2a, and a jack 8 is provided at the tip of the gantry 2. Reaction force receiving jack 6
Is for agitating the horizontal boring machine B during boring operation and abutting against H to receive a reaction force, and another jack 8 pushes the front wall surface of the shaft T to stabilize the gantry 2. The jacks 6 and 8 are mechanical type, hydraulic cylinder type,
There are pneumatic cylinder type, etc., but the type and specific structure are arbitrary.

Reference numeral 10 is an electric low speed winch (elevating means). The winch 10 is for raising and lowering the gantry 2 along the column 1, and is provided at the bottom of the mine, and its wire 10a is wound around the pulleys 11, 12, 13, and 14. Two pulleys 13 are provided side by side on the upper end of the column 1, and two pulleys 14 are provided side by side on the upper surface of the support portion 2a (they overlap in FIG. 1) to form a pulley device. The pulleys 12 and 13 and the jack 8 are omitted in FIG. The winch can also be installed on the gantry 2.

A wire 10a is attached to the gantry 2 and the winch 10.
A drop prevention device and an overload prevention device at the time of disconnection are provided as is well known, and an upper limit switch for outputting a signal to stop the winch 10 when the pedestal 2 rises to the upper limit, and the pedestal 2 Is provided with a lower limit switch that outputs a signal to stop the winch 10 when is lowered to the lower limit. 16 is a brave.

In the elevating and lowering device of the horizontal boring machine configured as described above, the gantry 2 is moved down or up by the winch 10 to stop at a desired position, and the jack 6 is agitated and brought into contact with H, and the jack 8 is used. Then, the pedestal 2 is stabilized and the horizontal boring machine B is operated to press the steel pipe horizontally into the ground. When the press-fitting of the steel pipe is completed, the jacks 6 and 8 are loosened, the gantry 2 is moved downward or upward again to the next position, and the steel pipe is press-fitted into the ground in the same manner as above. The side wall Ka (FIGS. 5 and 6) is built in the ground by repeating the above operation.

In this vertical boring machine lifting device, a side edge 2c of the gantry 2 on the horizontal boring machine B side is provided.
Are arranged outside the up-and-down guide surface F of the pillar 1, so that the horizontal boring machine B can be brought close to the Yamadome pile Ya without being disturbed by the pillar 1, and the arrangement surface of the Yamadome pile Ya (strictly speaking, , The side wall Ka can be constructed in the immediate vicinity of the extended surface of the lined surface). Further, unlike the conventional lifting device, since a mast of a tower crane or the like can be used for the support column 1, it is not necessary to manufacture a dedicated support column, which is economical and cost can be reduced. Furthermore, the pedestal 2
Since it is supported cantilevered by the column 1, it has excellent versatility, and can be freely diverted to other machines other than the horizontal boring machine B or to lift and lower loads.

3 and 4 show another embodiment of the present invention.
The same members as those in FIGS. 1 and 2 are designated by the same reference numerals, and detailed description thereof will be omitted.

The cylindrical support 22a of the lifting device of this embodiment
Is provided at a corner of the rear end of the gantry 22, and the reaction force receiver 7 provided with the jack 6 is provided at the back of the horizontal boring machine B.

Also in this lifting device, the side edge 22c of the pedestal 22 on the horizontal boring machine B side is outside the lifting guide surface F of the column 1. Therefore, it has the same effect as the lifting device of FIGS.

In the above two embodiments, the pedestals 2 and 22
Are both supported cantilevered by one column 1, but side edges 2 of the pedestals 2 and 22 on the horizontal boring machine B side.
If c and 22c are arranged outside the elevating guide surface F of the column 1, it is possible to support them with two or more columns 1. In this case, the pedestals 2 and 22 are not always supported by the support 1 in a cantilever manner.

[0021]

As described above, in the elevating / lowering device for the horizontal boring machine according to the present invention, the pedestal on which the horizontal boring machine is placed is movably supported by the columns vertically installed on the vertical shaft or the like. In a lifting device for a horizontal boring machine, which is provided with lifting means for lifting and lowering the gantry along a column, the gantry has one side edge along the boring direction of the horizontal boring machine, the boring direction of the column. Since the horizontal boring machine is not disturbed by the support pillars, for example, the horizontal boring machine is brought close to the mountain retaining pile of the vertical shaft, and the arrangement surface of the mountain retaining pile is arranged. Side walls can be built very close to. Therefore, when the mountain retaining pile is struck on the site boundary, it becomes easy to excavate the tunnel close to the site boundary.

Further, since the mast of a tower crane can be used for the columns, and it is not necessary to purposely manufacture a dedicated column, it is economical and the construction cost of the side wall can be reduced.

When the guide members provided on the upper and lower portions of the cylindrical support portion that is fitted to the support pillar are guided to the guide surfaces of the support pillar so that the mount base can be raised and lowered, the mount base can be smoothly moved up and down.

Further, if the gantry is constructed so as to be supported cantileveredly by one column, the versatility is improved, and it is diverted to other machines other than the horizontal boring machine and loads and loads to improve the operation rate. be able to.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of a lifting device for a horizontal boring machine according to the present invention.

2 is a plan view of the lifting device of FIG. 1. FIG.

FIG. 3 is a plan view showing another embodiment of the lifting device for the horizontal boring machine according to the present invention.

4 is a front view of the lifting device of FIG.

FIG. 5 is a rear view of a lifting device for a conventional horizontal boring machine.

6 is a side view of the lifting device of FIG.

[Explanation of symbols]

 1 Support 1a Guide surface 2,22 Frame 2a, 22a Cylindrical support 2c, 22c Side edge 3 Guide member 10 Winch (lifting means) 10a Wire 11, 12, 13, 14 Pulley B Horizontal boring machine F Lifting guide surface H Belly Raising T Shaft Ya, Yb Yamadome pile

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Tadashi Saito 4-4-3 Midori, Sumida-ku, Tokyo Yoshinaga Machinery Co., Ltd.

Claims (3)

[Claims] 1. A mount for mounting a horizontal boring machine,
It is supported up and down by a column vertically installed on a vertical shaft,
In the elevating / lowering device of the horizontal boring machine, in which the pedestal is provided with an elevating means for elevating / lowering the pedestal along a column, the gantry has one side edge along the boring direction of the horizontal boring machine, and An elevating device for a horizontal boring machine, which is provided outside the elevating guide surface along the boring direction. 2. The gantry is characterized in that the guide members provided on the upper and lower portions of a cylindrical support portion that is fitted to the support column are guided by the guide surface of the support column so as to be able to move up and down. Lifting device for the horizontal boring machine described in 1. 3. The elevating device for a horizontal boring machine according to claim 1, wherein the gantry is cantilevered by one column.