JPH018880Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a device that automatically loads explosives into blast holes drilled in rocks, etc., and in particular, the device is designed to automatically load explosives into blast holes drilled in rocks, etc. The explosive insertion part attached to the tip of the guide shell and movable to any blast hole position is connected via a flexible charge tube and controlled remotely, automating the loading of explosives and drilling the explosive insertion part. To be configured so as to be connectable and detachable to a liftable deck of a drilling machine, and to be connected to the liftable deck during drilling so as not to impede the workability of drilling.

Generally, when performing blasting work such as tunnel excavation, explosives are loaded into the blast hole manually using a loading rod. However, manual charging is time-consuming and causes great worker fatigue, making it difficult to improve the efficiency of blasting work. On the other hand, in recent years, charging devices that load explosives using compressed air have been proposed (for example,
Special Publication No. 36-7399, Special Publication No. 49-19484, etc.)

However, although these charging devices mechanize loading, they require a worker to position the explosive insertion tube in the blast hole, and cannot prevent workers from danger from falling rocks at the face. .

This invention solves such problems in the charging device.

Therefore, the purpose of this invention is to provide a charging device that can position and charge an explosive insertion part in a blast hole using the guide shell of a drilling machine. The purpose of this invention is to provide a charging device that saves the trouble of charging work and improves the efficiency of blasting work without impeding the workability of drilling. To provide a charging device which eliminates the need for a worker and improves the safety of charging work.

That is, this invention, as in the illustrated embodiment, consists of a main body 9 of the charger installed in the drilling machine 1 and an explosive insertion part 17 attached to the tip of the guide shell 4.
1 and 2 are connected to each other by a flexible charging tube 15, and the explosive insertion portion 17 is configured to be connectable to and detachable from the liftable deck 7 of the drilling machine 1.

This invention will be explained below with reference to illustrated embodiments. FIG. 1 is a side view of a drilling machine equipped with an automatic charge device, which is an embodiment of this invention. A guide shell 4 is rotatably attached to the tip of the boom 3. A rock drill 5 is mounted on the guide shell 4, and drills a hole in the rock by moving forward while applying impact and rotation to the rod 6. Further, on the truck 2 of the drilling machine 1, a liftable deck 7 for performing various related operations is supported at the tip of a decking boom 8 that is raised up and down so as to be movable back and forth.

On this liftable deck 7, a known charger main body 9 is installed. The main body 9 of the charger is the second
As shown in the figure, a cartridge extrusion cylinder 11 is provided below a hopper 10 into which a cartridge is placed, and a cartridge delivery pressurized air chamber 12 is connected in front of this cartridge extrusion cylinder 11. The cartridge delivery pressurized air chamber 12 is provided with a pressurized air supply port 13 and is connected to a pressurized air source (not shown), and a flexible charge tube 15 is inserted into the cartridge insertion portion 14 at the front end. One end is attached. 16 is a cartridge supply feeder, and hopper 1
The cartridges in 0 are taken out by this cartridge supply feeder 16, quickly inserted into the cartridge insertion part 14 by the cartridge extrusion cylinder 11, and then passed through the pressurized air supply port 13 to the pressurized air chamber 12 for cartridge delivery. The cartridge can be delivered to the charge tube 15 by supplying pressurized air from.

The other end of the charge tube 15 is connected to an insertion tube 18 of the explosive insertion section 17 . This explosive insertion part 17 is
As shown in FIG. 3, the insertion tube 18 is fixed to a support 19, and the mounting groove 20 provided in the support 19 is connected to the centralizer 21 at the tip of the guide shell 4. It can be attached to the attachment member 22. The explosive insertion part 17 is configured such that the center of the tip of the insertion tube 18 and the rod 6 of the rock drill 5 coincide with each other when it is attached to the guide shell 4. Since the charge tube 15 between the machine body 19 is flexible, the guide shell 4 can be freely moved to the same position as when drilling a hole, and the tip of the insertion tube 18 can be aligned with the blast hole. . In order to prevent the explosive insertion portion 17 from disconnecting during the charging operation, it is desirable that the attachment groove 20 be provided with a mechanism to prevent it from falling off, such as a cylinder or a spring.

Further, this explosive insertion part 17 has a locking protrusion 23 protruding from the rear surface of the support body 19, and can be locked by fitting into a locking groove 24 provided at the front end of the liftable deck 7. It's becoming like that. It is preferable that this locking groove 24 also be provided with a drop-off prevention mechanism.

When performing blasting work with this device,
First, after the explosive insertion part 17 is connected to the liftable deck 7 and removed from the guide shell 4, a hole is drilled with the rock drill 5.

During this time, liftable deck 7 was moving backwards.
The explosive insertion portion 17 does not interfere with the drilling operation. When drilling is completed, the rock drill 5 is retreated to the rear end of the guide shell 4, and the liftable deck 7 is advanced. Then, the guide shell 4 is moved and the mounting member 22 is attached to the support 19 of the explosive insertion part 17 which is connected to the front end of the liftable deck 7.
The explosive insertion part 17 is removed from the liftable deck 7.
Therefore, by moving the guide shell 4 in the same manner as when drilling a hole, the insertion tube 18 can be aligned with the position of the blast hole. When the positioning of the insertion tube 18 is completed, the cartridge is taken out from the hopper 10 of the main body 9 of the loading machine by the cartridge supply feeder 16, inserted into the receiving cartridge insertion part 14 by the cartridge extrusion cylinder 11, and the cartridge is delivered. By supplying pressurized air to the pressurized air chamber 12, the explosive passes through the charging tube 15 and is loaded into the blast hole from the insertion tube 18. When the charging of one blast hole is completed, the guide shell 4 is moved to the next blast hole position and charged, and by repeating this sequentially, all the blast holes are loaded with explosives.

As mentioned above, according to the device of this invention, the positioning of the insertion tube 18 is also possible by remote control of the guide shell 4, so by sequentially controlling the positioning of the insertion tube 18 and the loading of explosives from the driver's seat,
All charging work can be carried out efficiently. In particular, when used in an automatic drilling machine controlled by a computer, the insertion tube 18 may be positioned to reproduce the movement of the guide shell 4 during drilling.
Extremely accurate and efficient.

Moreover, since the explosive insertion portion 17 is configured to be moored to the liftable deck 7 during drilling, there is no risk of hindrance to the drilling operation.

Since an independent explosive insertion part 17 that can be removed from the guide shell is used so that it can be connected to and disconnected from the liftable deck 7, its charging hole is made large in diameter, and the hole in the flexible charge tube 15 is also made in a large diameter. This makes it suitable for solid explosive charges.

Furthermore, since there is no need for a charging worker on the face, the number of man-hours for blasting work can be reduced, and there is no danger from falling rocks, etc., which improves safety.

[Brief explanation of the drawing]

Fig. 1 is a side view of a drilling machine equipped with an automatic charging device, which is an embodiment of this invention, Fig. 2 is an explanatory diagram showing the structure of the main body of the charging machine, and Fig. 3 is an explosive insertion FIG. In the diagram, 1...Drilling machine, 2...Dolly, 3...Boom, 4...Guide shell, 5...Rock drilling machine, 6
... rod, 7 ... liftable deck, 9 ... charge machine body, 15 ... charge tube, 17 ... explosive insertion part, 18 ... insertion tube, 19 ... support body.

Claims (1)

[Scope of utility model registration request] The main body of the charger installed in the drilling machine and the explosive insertion part attached to the tip of the guide shell are connected with a flexible charge tube, and the explosive insertion part is connected to the liftable deck of the drilling machine. An automatic charging device characterized by being configured so that it can be connected and detached from the device.