JP2563452Y2 - Rock drill fixing device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for fixing a rock drill to rock during drilling.

[0002]

2. Description of the Related Art In a tunnel, a mine, or the like, when a ground is crushed by an explosive and excavated, a blast hole for loading an explosive into rock is previously drilled. Is a rock drill. For example, a drifter, a type of rock drill, is fixed to the rear of a linear guide shell, and transmits the striking or rotating force of this drifter to a bit at the tip via a rod directly connected to the drifter. The rock is crushed and drilled. When drilling by the rock drilling machine, a projection or a rubber non-slip is attached to the tip of the guide shell so that the bit does not shift from the drilling position.

[0003]

However, as described above, since a rock drill is pierced by a striking force and a rotating force, the tip of the bit is separated from the rock at a moment when struck. The rock surface is not always flat, but rather has slopes and irregularities. Therefore, it is difficult to completely fix the rock drill with the protrusion or the rubber non-slip provided at the tip of the guide shell. An object of the present invention is to provide a device that can completely fix a rock drill to rock during drilling.

[0004]

In order to achieve the above object, a rock drilling machine according to the present invention is provided with a rock drilling machine that drills a hole with a hitting force or a rotating force of a bit fixed to the tip of a rod. It is an object of the present invention to solve the problem by providing a drill bit that can bite into rock in parallel with the bit and in parallel with the rod, and a motor that rotates the drill blade. .

[0005]

After the tip of the drill bit is pressed against the rock, the drill bit is rotated to cut rock. When the drill bit has sufficiently penetrated the rock, the fixing operation is completed and the rock is drilled with the bit. When removing the bit, pull out the drill bit while rotating it.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a longitudinal sectional side view of a fixing device of a rock drill, and shows a rod 2 of the rock drill with a bit 1 fixed to a tip portion.
Are provided along the linear guide shell 3.
A drifter (not shown) is connected to a rear portion of the rod 2. A fixing device 10 is provided at the tip of the guide shell 3.

In the fixing device 10, a box-shaped motor box 12 accommodating a motor 11 is provided at the distal end of the guide shell 3, and the box 12 is juxtaposed with the bit 1. A compression coil spring 17 is interposed between the rear end surface of the motor box 12 and the front end of the guide shell 3 to urge the box 12 forward. A rubber-made cylindrical foot pad 18 is fixed to the front surface of the motor box 12, and a drill blade 14 that is rotated by the drive of the motor 11 is disposed on the axis of the pad 18. As the drill blade 14, a commercially available hand-held concrete drill can be used, and it is preferable that the blade 14 be parallel to the rod 2. Note that the tip of the drill bit 14 is slightly projected from the tip of the foot pad 18.

To drill a rock using a rock drill equipped with the fixing device 10, first, the tip of the drill bit 14 is pressed against the rock, and then the motor 11 is driven to rock the rock.
Since the impact force of the drill blade 14 is extremely small as compared with the impact force of the drifter, almost no side slip occurs. By the time the drill bit 14 digs into the rock, the foot pad 18
The motor 11 is stopped because the tip of the abuts against the rock surface, and the fixing operation is completed. The pressing force of the tip of the drill blade 14 against the rock is adjusted by the elastic force of the compression coil spring 17 and the foot pad 18. After the fixing operation, as shown in FIG. At the time of rock removal of the bit 1, the drill blade 14 is reversed and pulled out.

[0009]

[Effects of the Invention] The rock drill fixing device according to the present invention is obtained by drilling the rock near the drilling position with a drill having a small impact and juxtaposed with a bit, and using the drill as an anchor. , Because it fixes the tip of the rock drill,
This has the effect of preventing the rock drill from skidding and firmly fixing the rock drill to the rock.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional side view showing a fixing device of a rock drill.

FIG. 2 is a longitudinal sectional side view of the fixing device in a drilled state.

[Explanation of symbols]

 1 bit 2 rod 3 guide shell 10 fixing device 11 motor 12 motor box 14 drill bit 18 foot pad

Claims (1)

(57) [Scope of request for utility model registration] 1. A fixing device for a rock drilling machine that drills a hole by a striking force or a rotating force of a bit fixed to a tip end portion of a rod, the device being arranged on the bit and parallel to the rod so as to cut into a rock. A rock drill fixing device, comprising a drill bit and a motor for rotating the drill bit.