JPS6343554B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a drilling jumbo equipped with a plurality of rock drills adapted to a tunnel excavation cross section on the front side of a gantry.

Conventionally, a drilling jumbo equipped with a rock drill in front of an arched gantry is fixedly designed so that the size of the arched gantry, that is, the width and height, matches the internal cross section of the tunnel.
Therefore, it is not possible to use a rock drill for large cross-section tunnels in a small cross-section tunnel, and conversely, it is difficult to use a rock drill for small cross-section tunnels in a large cross-section tunnel due to the number of rock drills and equipment location. However, it was not suitable for the large excavation cross section.

The purpose of the drill jumbo of the present invention is to eliminate such drawbacks, and by making the gantry have a structure that allows its width and height to be freely adjusted, it can be used freely in tunnels with both large and small cross sections. This is what I did.

This will be explained in detail below with reference to the illustrated embodiment.

a, a' are left and right frame structures that constitute gantry A;
1, 1', 2, 2' are the front and rear struts made of square steel pipes of the left and right frame structures a, a', and the side frame plates 3, 3' are erected between these struts 1 and 2, 1' and 2'. are doing. Reference numeral 4 denotes a support leg made of a square steel tube inserted into each support column 1, 1', 2, 2' from below, and connects the tip of the rod 5' of a hydraulic cylinder 5 installed in each support column.

b, b' are telescopic front and rear upper beams composed of left and right arms 6, 6', 7, and 7' made of rectangular steel tubes formed in a F-shape, and these are attached to the front and back of the upper surfaces of the side frame plates 3 and 3'. The horizontal parts of the left arms 6 and 7 are inserted into the horizontal parts of the right arms 6' and 7', respectively, and a hydraulic cylinder 8 is installed between each of these arms 6 and 6' and 7 and 7'. are doing. That is, the base end of the hydraulic cylinder 8 is connected to the right arms 6', 7', and the tip of the rod 8' is connected to the left arms 6, 7.

c and c' are outer cylinders 10 and 10' made of square steel pipes,
Inner cylinder 11 also made of square steel pipe inserted on both sides
₁ , 11 ₂ , 11 ₁ ′, 11 ₂ ′ with front and rear lower beams,
The tips of the rods 12' of the hydraulic cylinders 12, which are installed in two of the outer cylinders 10 and 10', are connected to the inner cylinder 1 described above.
1 ₁ , 11 ₂ , 11 ₁ ', and 11 ₂ '.

The front lower beam c is connected to the lower front end of the side frame plate 3' by the inner cylinder 11 ₁ and close to the column 1', and the rear lower beam c' is connected to the lower surface of the side frame plate 3 by the inner cylinder 11 ₁ '. They are each attached to the end portions close to the support column 2 so as to be horizontally rotatable. That is, the front lower beam c has a storage position along and parallel to the lower surface of the side frame plate 3' (solid line in Figures 1 and 3), and an internal position at the front end of the lower surface of the side frame plate 3 close to the column 1. Cylinder 11
₂ and the straddle position perpendicular to the side frame plates 3 and 3' (dashed line in Figures 1 and 3, Figure 4). Storage position along and parallel to the bottom surface of plate 3 (solid line in Figures 1 and 3)
Then, the inner cylinder 11 ₂ ' is placed at the rear end of the lower surface of the side frame plate 3' and close to the column 2', and the side frame plate 3,
In order to be able to freely rotate horizontally between the straddle position perpendicular to 3', and to enable these front and rear lower beams c and c' to be freely engaged and detached from the storage position and the straddle position,
The inner cylinders 11 ₂ , 11 2 ′ of the front and rear lower beams c, c′ are received and locked in predetermined positions of the side frame plates 3, 3′ or columns 1, ₂ ′, and the locks are released. Appropriate engagement and disengagement means (not shown) are provided for the release.

Reference numeral 13 designates a wheel pivotally supported on the lower surfaces of the front and rear lower beams c and c', more precisely, the lower surface of the outer cylinders 10 and 10', and 14 represents a connecting rod that spans between the front and rear upper beams b and b'.

B and B' are rock drills that are attached to stays 15 and 15' that protrude from the front surfaces of the left and right frame structures a and a', that is, the front surfaces of the columns 1 and 1', so as to be rotatable vertically and horizontally.

In order to use the drill jumbo of the present invention having the above configuration in a tunnel L having a large cross section, as shown in FIGS. 1 to 3, by extending the rod 8' of the hydraulic cylinder 8, arms 6, 6',
7, 7' are extended, the left and right frame structures a,
In a state where the distance between a' is widened, that is, the gantry A is in an expanded state, and each support leg 4 of the struts 1, 1', 2, and 2' is extended by the extension of the rod 5'. In other words, the gantry A is in a tall state, and is used in a state that is suitable for the inner cross-section of the tunnel L, which has a large cross-section. At this time, the front and rear lower beams c and c' are locked in storage positions parallel to the lower surfaces of the side frame plates 3 and 3'.
A shear truck or the like can freely run on the rails 16, 16 without being obstructed by the front and rear lower beams c, c' to carry out predetermined work.

Tunnel L
To move within the storage position, press the front and rear lower beams c,
c' is rotated to the straddling position perpendicular to the side frame plates 3, 3' (dashed line in Figure 3), each support leg 4 is shortened, and the wheels 13,
13 on the rails 16, 16, and shorten the distance between the left and right frame structures a, a' to reduce the width and lower the gantry A (Fig. 4). In this state, move it forward or backward to the desired position. Just let it happen. Therefore, this drill jumbo can be easily moved within the tunnel L without worrying about the width, height, etc. of the tunnel L, especially since the tunnel L has a small inner cross section in one part. Sometimes, the movement is possible.

This width reduction, widening of the low drill jumbo,
In order to use the height, first widen the distance between the left and right frame structures a and a' by extending the front and rear upper beams b and b' and the front and rear lower beams c and c', and also extend each support leg 4. is lowered to the ground by hydraulic cylinder 5,
Subsequently, the entire gantry A is lifted by the hydraulic cylinder 5, and the front and rear lower beams c,
The wheels 13, 13 are floated away from the rails 16, 16 along with c', and the front and rear lower beams c, c' are rotated from the orthogonal straddling position to the parallel storage position and locked there (first to third figure).

In addition, in order to use the drill jumbo of the present invention in a tunnel S with a small cross section, it is necessary to reduce the width and lower the height as shown in FIG. 13 is placed on the rails 16, 16, each support leg 4 is lowered to the ground by the hydraulic cylinder 5, and then the hydraulic cylinder 5 lifts the entire gantry A so that the wheels 13, 13 are separated from the rails 16, 16. Lift it to a state where
It is sufficient to lock the front and rear lower beams c, c' in the storage position parallel to the side frame plates 3, 3', and thereby the rails 16,
A shear truck or the like can freely run on the 16 to carry out predetermined work.

In the above, the front and rear lower beams c and c' are horizontally rotatable, and in particular, the storage position is along the lower surface of the side frame plates 3 and 3'.
The storage position may be a position standing up along the side frame plates 3, 3'. Further, for the expansion and contraction of the upper and lower beams b, b', c, and c' and for the expansion and contraction of the support legs 4, it is possible to employ not only a hydraulic cylinder but also a pneumatic cylinder or other appropriate mechanical expansion and contraction means.

As is clear from the detailed description above, the drilling jumbo of the present invention allows the width of the gantry to be freely expanded and contracted by the front and rear upper beams and the front and rear lower beams, and the height of the gantry can also be adjusted by the support legs. It can be used by adjusting the size to suit the size of the tunnel cross section. In particular, since the front and rear lower beams can be rotated to storage positions along the left and right frame structures, they do not interfere with the passage of shear vehicles and the like. In addition, since the front and rear lower beams have wheels pivoted on their lower surfaces when they are straddled, they are convenient for moving the whole jumbo forward and backward. This serves to temporarily support the entire gantry during expansion and contraction.

[Brief explanation of the drawing]

The drawings show an embodiment of the drill jumbo of the present invention, in which Fig. 1 is a side view, Fig. 2 is a plan view, Fig. 3 is a side view, and Fig. 2 is a plan view.
Figure 4 is a front view of the gantry. B, B'...rock drill, A...gantry, a,
a'... Frame structure, b, b'... Front and rear upper beams, c, c'...
Front and rear lower beams, 13... Wheels, 1, 1', 2, 2'...
Pillar, 4...Support leg.

Claims (1)

[Claims] 1 In a drill jumbo consisting of multiple rock drills equipped on the front of the gantry, a telescopic front and rear upper beam is straddled between the left and right frame structures, and the base end is pivoted to one of the left and right frame structures. A telescopic front and rear lower beam is provided so as to be rotatable between a storage position along the left and right frame structures and a straddling position spanning between the left and right frame structures, and when the front and rear lower beams are in a straddling state. A drill jumbo characterized in that the gantry is constructed by pivotally supporting a wheel on the lower surface, and further having supporting legs telescopically mounted on each of the front and rear columns of the left and right frame structures.