JP2545169Y2 - Boring machine - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a boring machine, and more particularly to a boring machine for drilling a vertical hole such as a manhole in advance and drilling a horizontal hole from the vertical hole.

[0002]

2. Description of the Related Art In particular, the construction of pipelines such as water pipes, sewer pipes, and electric wire pipes in urban areas is not cut off from the ground so that vertical holes such as manholes are not cut off from the ground so as not to hinder social activities such as traffic. Is formed in advance by a method of drilling a horizontal hole extending in a horizontal or inclined direction from the vertical hole.

Next, a boring machine for constructing such a pipeline will be described with reference to FIG.

FIG. 5 is a side view of a main part of a boring machine. In the figure, reference numeral 21 denotes a vertical hole such as a manhole, and reference numeral 22 denotes a horizontal hole which is to be drilled from the vertical hole 21 in a horizontal or inclined direction.

A pair of rails 23 are provided in the bottom 21a of the vertical hole 21 in parallel with the horizontal hole 22 to be drilled. 25 and sub-slider 2
6 are provided. The main slider 25 and the sub-slider 26 are provided with pins 27 and 28 so as to be insertable, and the lower ends 27 a and 28 a of the pins 27 and 28 are
The main and sub-sliders 25 and 26 are fixed to the rail 23 by inserting them into the locking holes 23a arranged in a row, and the pins 27 are removed from the main slider 25, and the hydraulic cylinder 24 is extended to connect the main slider 25 to the rail. 23, and the main slider 25 is moved to the pin 27 in the advanced position.
Then, the pin 28 is pulled out of the sub-slider 26 and the hydraulic cylinder 24 is contracted to pull the sub-slider 26 toward the main slider 25 and move forward. The pin 28 moves the sub-slider 26 to its position. To lock the rail 23. By repeating this operation, the boring machine main body provided on the main slider 25 is moved forward, or is moved backward along the rail 23 by performing an operation opposite to the above operation.

The boring machine main body provided on the main slider 25 includes a transmission 2 mounted on the main slider 25.
9. Rotary drive unit 3 protruding from rear of transmission 29
0, a cutter 31 provided on an output shaft 29a of a transmission 29 that is rotationally driven by a rotation drive device 30. The cutter 31 pierces the lateral hole 22 while moving forward by the main and sub sliders 25 and 26.

When the transmission 29 reaches the vicinity of the wall surface 21b of the vertical hole 21 while drilling the horizontal hole 22, the cutter 31 is separated from the output shaft 29a, and the boring machine body is expanded and contracted by the hydraulic cylinder 24 and the pins 27 and 28 are replaced. As described above, a cutter (not shown) is interposed between the output shaft 29a and the cutter 31, and the cutter 31 is rotated and driven by the rotation drive device 30 to advance the lateral hole 22 as described above. Similarly, at the retracted position, a new hole is successively added between the base end of the tube and the output shaft 29a by welding, so that the side hole is dug.

[0008]

According to the above-mentioned conventional boring machine, it is possible to dig a horizontal hole by adding a pipe while repeating forward and backward movements by a traveling section having a main, sub-slider and a hydraulic cylinder. It is.
However, every time the boring machine body advances and retreats, the pin must be replaced in accordance with the movement of the main slider and the sub-slider. Further, the rotary drive device is provided so as to protrude greatly rearward from the transmission. From being
There is a problem that the amount of movement in the longitudinal direction within a vertical hole of limited size is greatly limited, the length of the pipe to be added at one time is limited, and a lot of man-hours are required for drilling work. .

Accordingly, an object of the present invention is to make it possible to easily move forward and backward in a vertical hole or the like, to make a large amount of perforations by one forward movement, and to add a long pipe. Another object of the present invention is to provide a boring machine that can be expected to greatly improve work efficiency.

[0010]

According to the present invention, a boring machine for achieving the above object is connected to a pair of rails arranged along a drilling direction so as to be capable of coming and going with a hydraulic cylinder and moving on the rails. A main slider and a sub-slider which are provided so as to be able to move up and down, and a locking pin which is biased downward and upward by each of the main and sub-sliders and further has a slope inclined in a traveling direction of a lower end; A plurality of engaging recesses arranged in a row on the rail that allows the lower end to be inserted,
The transmission includes a transmission provided on the main slider, and a rotary drive provided above the transmission and configured to rotationally drive a cutter mounted on an output shaft of the transmission via the transmission.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a boring machine according to the present invention will be described below with reference to the drawings.

FIG. 1 is an overall side view of a boring machine, in which reference numeral 1 denotes a vertical hole such as a manhole, and 2 denotes a vertical hole.
It is a horizontal hole for water supply, sewerage, electric wire, etc. that is to be drilled in the horizontal direction.

A pair of rails 3 are provided at the bottom 1a of the vertical hole 1 in parallel with the horizontal hole 2 to be drilled. As shown in FIG. 2 and a cross section taken along the line AA of FIG. 2, the rail 3 has an engagement concave portion 4a having an E-shaped cross section and an upwardly open engaging recess 4a along the upper side edge. A part 4 is provided.

A main slider 5 and a sub-slider 6 serving as a traveling portion are movably provided so as to surround the upper surface of the rail 3 and the locking portion 4. Therefore, they are connected to each other so as to be able to come and go.

The sliders 5 and 6 are provided with cylindrical locking pins 9 and 10 urged downward by a spring 8 by holders 11 and 12 so as to be vertically movable. The upper ends protrude upward from the tops of the holders 11, 12, while the lower ends 9a, 10a penetrate the sliders 5, 6, are inserted into the engaging recesses 4a of the rail 3, and are inclined 9b, 10b inclined in the traveling direction. have.

Since the traveling portion is constructed as described above, for example, when the hydraulic cylinder 7 is extended in a state where the main and sub sliders 6 and 7 shown in FIGS. Lower end 9a is locked in the engagement recess 4a,
Movement is prevented, and the sub-slider 6 is pushed forward by the reaction force and moves forward. As the sub rider 6 moves forward, the slope 10 b formed at the lower end 10 a of the locking pin 10
a, and is pushed into the holder 12 against the spring 8 and moves on the rail 3 until it reaches the front engaging recess 4a, and the locking pin 10 is engaged by the spring 8. The lower end 10a is inserted into the recess 4a. Subsequently, when the hydraulic cylinder 7 is contracted, the sub-slider 6 is held by the engagement pin 10 which engages with the engagement recess 4a, while the main slider 5 is pulled forward and the inclined surface 9b is moved toward the engagement recess 4a. Pushed by the open end 4b, pushed into the holder 11 and moved on the rail,
Eventually, it reaches the front engaging recess 4a, and the spring 10
As a result, the lower end 9a of the engagement pin 9 is inserted into the engagement recess 4a. In this way, by repeatedly expanding and contracting the hydraulic cylinder 7, the main and sub-sliders 5 and 6 advance alternately, and the traveling section having the main and sub-sliders 5 and 6 sequentially moves forward.

Further, the upper ends 9c and 10c of the engaging pins 9 and 10 protruding from the holders 11 and 12 are pulled up, and the directions of the engaging pins 9 and 10 are switched so as to be opposite, that is, the slopes 9b and 10b face rearward. As described above, by extending and contracting the hydraulic cylinder 7, the traveling portion can be sequentially moved backward.

On the main slider 5, the boring machine body 1 is mounted.
3 are provided. The boring machine body 13 has a transmission 14 provided on the main slider 5 as shown in FIGS. 1 and 4, and a hydraulic motor or the like such that the rotation shaft 15a extends vertically above the transmission 14. Rotary drive 1
5 are provided. As shown in FIG. 4, the rotation driving device 15 rotationally drives a worm 14b extending in the vertical direction of the transmission 14 via a gear device 14a. Worm 14b
Is configured to rotationally drive a worm wheel 14c having a horizontal rotation axis in the front-rear direction. An output shaft 14d protruding forward of the main body 13 from the worm wheel 14c is provided, and a cutter 16 is attached to the output shaft 14d. Worm wheel 14c to worm 14b
As a result, the transmission 14 can be simplified, and the longitudinal dimension can be reduced.

The operation of the boring machine configured as described above will be described.

A vertical hole 1 such as a manhole is drilled at one end of the horizontal hole 2 to be drilled, and a pair of rails 3 are laid on the bottom 1a of the vertical hole 1 in parallel with the horizontal hole 2 to be drilled. As shown in FIGS. 1 to 3, a main slider 5 and a sub-slider 6, which are running parts of a boring machine, are mounted. At this time, the locking pins 9 and 10 are
The slopes 9b and 10b formed on the side a are adjusted so as to face the side holes 2 to be drilled.

Next, the rotation driving device 15 is started, the worm 14b is rotated, and the worm wheel 14c is rotationally driven to rotate the cutter 16 attached to the output shaft 14d.

Subsequently, by repeating the expansion and contraction operation of the hydraulic cylinder 7 of the traveling section, the engagement and disengagement of the engaging recesses 4a formed on the rail 3 by the locking pins 9 and 10 provided on the main slider 5 and the sub-slider 6 are performed. The process is repeated alternately, advanced, and perforated by the cutter 16.

When the hydraulic cylinder 7 reaches a predetermined position while piercing, the forward / rotation drive unit 15 stops due to the expansion and contraction of the hydraulic cylinder 7, and the output shaft 14d and the cutter 16 are separated from each other. The stop pins 9 and 10 are moved to their upper ends 9c,
10c is pulled up so that the engagement recess 4a of the rail 3 is formed.
From the lower end 9a, 10a of the locking pins 9, 10, and fitted into the engaging recess 4a so that the inclined surfaces 9b, 10b formed in the opposite direction to the lateral hole 2.

Subsequently, the main and auxiliary sliders 5 and 6 are retracted by extending and retracting the hydraulic cylinder 7, and thus the boring machine body 13 is retracted and stopped at the rear end of the rail 4.

With the boring machine body 13 retracted and positioned at the rear end of the rail, a pipe of a predetermined length is engaged between the output shaft 14d and the cutter 16. Next, the slopes 9b and 10b formed on the lower ends 9a and 10a of the locking pins 9 and 10 are
The direction of the locking pins 9 and 10 is changed so as to face the direction, the rotation driving device 15 is started to rotate the cutter 16 via the transmission 13 and the cylinder, and the hydraulic cylinder 7 is repeatedly extended and contracted to advance. Then, the drilling of the horizontal hole 2 is restarted.

Similarly, the boring machine main body 13 is reciprocated by replacing the locking pins 9 and 10 and repeating the expansion and contraction of the hydraulic cylinder 7, and the base end of the cylindrical body and the output shaft 14d.
The drilling of the lateral hole 2 is continued by adding new cylinders one after another by welding.

In the above description, the worm wheel is formed so as to be rotationally driven via a worm by one rotary driving device. However, two rotary driving devices are provided, and two worms facing each other via the worm wheel are used. It is also possible to rotationally drive the worm wheel.

A rail is laid at the bottom of the vertical hole, and the main and sub-sliders are mounted on the rail.
It is also possible to install the main and sub-sliders and the like on the rail in advance at the bottom of the vertical hole.

In the above description, the case of drilling water supply, sewerage, and conduits for electric wires has been described. In addition, it is widely used in other tunneling machines for civil engineering, such as advanced tunnels, drainage holes, and long holes geological survey holes in tunnels. It is possible and has a great practical effect.

[0030]

According to the boring machine of the present invention described above, the directions of the pins provided on the main and sub sliders are changed.
The boring machine can be easily moved forward and backward by simple operation of extending and retracting the hydraulic cylinder, and the rotary drive is arranged above the transmission, so that the longitudinal dimension of the boring machine can be significantly reduced. The range of movement of the boring machine in the longitudinal direction, such as in a limited vertical hole, has been greatly expanded, and the use of long pipes has become possible. Can be expected to be more efficient.

[Brief description of the drawings]

FIG. 1 is a side view showing a main part of an embodiment of a boring machine according to the present invention.

FIG. 2 is an enlarged side view of a main part of the embodiment.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is a cross-sectional view of a main part along line BB in FIG. 1;

FIG. 5 is a side view of a main part of a conventional boring machine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vertical hole 2 Side hole 3 Rail 4a Engagement concave part 5 Main slider 6 Secondary slider 7 Hydraulic cylinder 9 Lock pin 9b Slope 10 Lock pin 10b Slope 13 Boring machine body 14 Transmission 14d Output shaft 15 Rotary drive 16 Cutter

Claims (1)

(57) [Scope of request for utility model registration] A main slider and a sub-slider which are connected to each other by a hydraulic cylinder so as to be able to move toward and away from the pair of rails arranged along the drilling direction, and are provided movably on the rails. Each of the sliders is vertically movable and urged downward, and further has a locking pin formed with a slope inclined in the traveling direction of the lower end, and a plurality of rows arranged on the rail which allows the lower end of the locking pin to be inserted. An engagement recess, a transmission provided on the main slider, and a rotation drive device provided above the transmission and configured to rotationally drive a cutter mounted on an output shaft of the transmission via the transmission. Features boring machine.