JPS605996A - Continuous drilling apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a drilling device for drilling a slit-like hole in which a plurality of holes are continuous (hereinafter referred to as continuous holes), and in particular, the present invention relates to a drilling device for drilling a slit-like hole in which a plurality of holes are continuous (hereinafter referred to as continuous holes), and in particular, to The second part is pivoted with the sub-guide shell on which the continuous hole drilling machine is mounted,
Between the main guide shell and the sub guide shell (2. The sub guide shell can be rotated (2) A hydraulic cylinder is provided to support the
Allows continuous holes to be drilled with bends.

When there are existing facilities or structures such as houses or other existing facilities near the site, the blasting method may cause environmental problems due to vibration and noise during blasting, as well as flying stones, etc.
For safety reasons, the blasting time, number of blasts per blast, and amount of stylus used for one blast are strictly regulated. Normally, one blast will cause an explosion;) F1 C can be blasted in several times. We must do this and dig deeper. Furthermore, in areas where it is completely impossible to use explosives, breakers are sometimes used to crush the rock, but this is inefficient for excavating hard rock layers. In such cases, continuous hole drilling allows the crushing work to be carried out efficiently. In addition, even if there are no restrictions on blasting, if continuous holes are drilled along the excavation pattern such as around the outer periphery of the excavation cross section or around the burn hole, and blasting is performed using this as a free surface, the tensile fracture of the rock can be utilized. Therefore, there are advantages in that the amount of charge is small, the finished surface of the tunnel excavation is good, and the amount of concrete filling by over-drilling can be reduced.

Therefore, in order to drill such continuous holes, a plurality of rock drills and rods are installed in parallel (2), and the tips of the adjacent rods (-) part of the rotation trajectory of the attached pit 1 is mutual (:
Overlapping continuous hole drilling devices have been proposed (for example, Japanese Patent Application Laid-open No. 126601/1982, Japanese Utility Model Application No.
No. 142303, JP-A-57-316893, etc.).

However, in such a conventional continuous hole drilling device, due to its rod arrangement, as shown in FIG.

However, as shown in Figure 2 (: the outer circumference of the tunnel 2
is generally a curved line, so when drilling the outer periphery 2 of the tunnel with a linear continuous hole drilling machine, the drilling operation must be repeated many times with the continuous hole 1 having a narrow width W. In addition, in the drilling pattern of blast hole O as shown in Fig. 2,
When drilling a continuous hole 4 that is bent as a free surface, it is necessary to
But it's the same.

This invention solves this problem in a continuous hole drilling device.

Therefore, an object of the present invention is to provide a continuous hole drilling device capable of drilling continuous holes whose cross-sectional shape is not only linear (2) but also curved at any angle (2). A 17+ object of the present invention is to provide a continuous hole drilling device that can drill relatively wide continuous holes even in a curved section, reducing the number of holes to be drilled and improving drilling efficiency. be.

That is, in the illustrated embodiment, the guide mounting 10 is pivotally attached to the tip of the boom 8 provided on the work cart 5 (2), and the cough guide mounting 10 (1 supporting the main guide shell 11) is mounted on the cough guide mounting 10 (1). Then, on the side of the main kite shell 11, there is a sub-guytonel 15 that mounts the continuous hole drilling machine 12.
are pivotally connected to the main guide shell 11 and the sub guide shell 15.
The present invention relates to a continuous hole drilling device characterized by being provided with a 413-pressure cylinder 17 that can rotate and support the sub-guide shell 15 between the two.

The present invention will be explained below based on the illustrated embodiments.

FIG. 3 is a side view of a continuous hole drilling device which is an embodiment of the present invention, and this continuous hole drilling device has a boom stand 7 pivotally attached to a base A of a known work cart 5. (7) Boom stand 7
(=The lower end of boom 8 is pivotally connected.

The boom 8 is provided with an elevation cylinder 9 and a rotation cylinder (not shown), and is capable of elevation and rotation. A guide mounting 10 is pivotally attached to the upper end of the boom 8, and a main guide shell 1 is attached to the guide mounting 10.
1 is slidable (2 is supported. Main guide shell 11
A continuous hole boring machine 12 is mounted on the main guide shell 11, and a feed cylinder (not shown) is installed in the main guide shell 11.
2. Move forward and backward. As shown in Figure 4 (2), in the continuous hole drilling hole vA12, a plurality of rods 13 are installed so that a part of the rotation locus of the bit 14 attached to the tip thereof is aligned with each other. This rod 13c: By applying impact and rotation, a continuous hole 1 having a cross-sectional shape as shown in FIG. 1 can be bored.

FIG. 5 is a cross-sectional view taken along the line -V in FIG. This secondary guide shell 15 (the second is also similar to the main guide shell 11 (a double hole boring machine 12 is installed). Between the main guide shell 11 and the secondary guide shell 15 (the second is a hydraulic cylinder 17 By expanding and contracting this hydraulic cylinder 17, the auxiliary guide shell 15 is rotated around the shaft 16 and supported at an arbitrary angle, so even curved continuous holes 4 can be drilled. .

The rotation angle of the sub-guide shell 15 can also be remotely controlled by providing angle detection.

6 and 7 are sectional views showing other embodiments of the present invention. FIG. 6 shows a case where sub guide shells 15 are provided on both sides of the main guide shell 11; In the figure, a continuous hole drilling machine is installed only on the sub guide shell 15,
This figure shows the case where the main guide shell does not have a continuous hole drilling machine.

When drilling continuous holes (Secondly, move the boom 8, rotate the sub guide shell 15 by a predetermined angle, and position the continuous hole drilling machine 12 at a predetermined easy position on the face surface. After that, the rod 16 is struck and rotated, and then the feed cylinder is used to tilt the rod.

When drilling the tunnel outer periphery 2, the rotation angle of the sub-guide shell 15 is determined by the curvature of the tunnel outer periphery 2, and when drilling a curved continuous hole 4 as a free blasting surface, the rotation angle of the sub-guide shell 15 is determined by the blasting method. Therefore, the rotation angle of the sub-guide shell 15 is determined.If two booms are installed on the trolley 5, one for continuous hole drilling and one for blast hole drilling, It is convenient to drill holes with .4 at the same time.

As mentioned above, the continuous hole drilling device of the present invention can drill not only continuous holes with a straight cross-sectional shape but also curved continuous holes, so it can drill wide continuous holes even in curved areas such as the outer periphery of a tunnel. It is possible to drill holes, reduce the number of holes to be drilled, and improve efficiency. Moreover, the finished surface is clean and the amount of over-excavation is small, reducing the amount of concrete.

In addition, it is easy to drill holes in the free surface of the hole pattern (double pattern), which improves the blasting effect and reduces the amount of charge.

[Brief explanation of drawings]

Fig. 1 is a sectional view showing the shape of a conventional continuous hole drilling device (two linear continuous holes), Fig. 2 is an explanatory drawing showing the drilling pattern on the tunnel face surface, and Fig. 3 is the invention according to the present invention. 4 is a plan view of the continuous hole drilling machine, FIG. 5 is a sectional view taken along the line ■-v in FIG. 3, and FIG. Fig. 7 is a +111° sectional view showing the configuration of a guide shell in another embodiment. In the figure, 1 and 4 are continuous holes, 2 is a tunnel outer periphery, 6 is a blast hole,
5 is a trolley, 8 is a boom, 1o is a guide mounting, 1
1 is a main guide shell, 12 is a continuous hole drilling machine, 15 is a sub guide shell, and 17 is a hydraulic cylinder. Patent applicant Furukawa Mining Co., Ltd. Agent Patent attorney Tetsuya Mori Patent attorney Yoshiaki Naito Patent attorney Shimizu Masaru Kajiyama Kakore

Claims (1)

[Claims] A guide mounting is pivotally attached to the tip of the boom provided on the work cart, and a continuous hole drilling machine is mounted on the guide mounting (1 supporting the main guide shell, and on the side of the main guide 1). A continuous hole drilling device, characterized in that a hydraulic cylinder is provided between the main guide shell and the sub guide shell, the sub guide shell being mounted thereon pivotably supporting the sub guide shell in a rotatable manner.