JP2860847B2 - Automatic loading device for flowable explosives - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic loading device for a flowable explosive.

[0002]

2. Description of the Related Art ANFO (ammonium nitrate explosive Ammoni)
um Nitrate Fuel Oil Explo
The method of loading a flowable explosive with an air-loading device, such as an air explosive, is performed by manually inserting a flowable explosive loading hose into the blast hole, pulling out the hose by hand while transporting the explosive with compressed air, and removing a suitable explosive from the blast hole. Stop the air at a suitable position.

[0003] When the charging is completed in this way, the tip of the hose is moved to the next blast hole, and the next explosive charging operation is started. Depending on the type of the loading machine, the above-mentioned operation includes a two-stage operation of cleaning the blast holes by blowing compressed air and charging.

[0004]

Conventionally, these operations are performed manually, and the charge start position, the stop position, and the withdrawal speed of the explosive charging hose are also largely varied according to the worker's intuition. Getting the hose in and out is also a repetitive manual labor. In addition, since it must be performed near a blast hole to be charged, the human body receives a burst of repeated explosives, which is not desirable for health.

The present invention has been proposed in view of the above-mentioned problems of the prior art, and an object of the present invention is to load a fluid explosive into a blast hole with an explosive loading hose connected to an explosive loading machine. It is an object of the present invention to provide an automatic loading device for a flowable explosive which is automatically mechanized and performs safe and accurate explosive loading, hose insertion and extraction, and explosive loading.

[0006]

In order to achieve the above-mentioned object, an automatic loading device for a flowable explosive according to the present invention guides a flowable explosive loading hose interlocked with a pneumatic explosive loading machine to a blast opening. A guide pipe, a hose feed roller mounted on the guide pipe, comprising a pair of opposite rollers for feeding the hose, a slip adjusting device for adjusting a hose gripping force by the roller, and a blast hole of the hose. It consists of a hose feed mechanism provided with a distance sensor for detecting the inner moving distance, and an operation panel of the hose feed mechanism.

[0007]

Since the present invention is configured as described above,
Using the guide pipe, the worker is positioned at an appropriate distance from the blast hole, and is separated from the blast hole.The hose feed roller in the hose automatic feeder mounted on the guide pipe is operated by the operation panel, and the hose is moved. Enters and exits the blast holes mechanically.

[0008] At this time, the depth sensor detects the depth in the hole of the hose, measures the charge start position and the charge end position, and moves the hose by an automatic hose feeder. The flowable explosive is automatically filled at an appropriate position in the blast hole by the air loading device. When the hose is inserted into the blasting hole, when a failure is encountered due to roughening of the hole, or when a predetermined appropriate resistance value of a pushing force of 20 kg or less is reached, the hose feed is slipped by the slip adjusting device. Safety is ensured.

If the pressure rises such that the explosive flows back to the outside of the hose during charging while returning the hose, the hose automatically slips and the hose retreats faster than the retraction speed.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explosive loading hose linked to a pneumatic explosive loading machine (not shown), and 2 is a guide pipe of the hose. There are two types of pneumatic explosive loading machines that can open and close the air valve manually, and models that have remote control equipment.The manual model is based on the assumption that the remote control equipment for opening and closing the valve is installed before linking with this device. And

The function of the air loading machine is to have a function of simply carrying the explosive by air, and two functions of air blowing and carrying the explosive.
There is a step switching. Hereinafter, an embodiment in which the present invention uses a two-stage switching air loading machine will be described. The explosive loading hose 1 is guided to a blast opening via a guide pipe 2. A hose feed mechanism 3 is mounted on a base end of the guide pipe 2, and a hose feed roller device 4 including a drive roller 4a and a driven roller 4b facing each other is mounted on the hose feed mechanism 3, A distance sensor 5 for detecting a moving distance of the hose in the blast hole is mounted. Further, the distance sensor 5 and the hose feeder 4 are electrically connected to an operation panel 6 composed of a computer or the like, and the operation and reading of the distance are performed by the operation panel 6, and the hose feed mechanism 3 and the distance sensor Reference numeral 5 is linked with the operation panel 6.

The hose feed roller device 4 includes, in addition to the feed drive roller 4 a for the hose 2, each of the rollers 4.
A slip adjusting device 7 for adjusting the gripping force of the hose by a and 4b is provided. (Refer to FIG. 2) The devices other than the operation panel 6 may be moved to the blast opening by the moving device 8 by human power. Since the illustrated embodiment is configured as described above, the present apparatus guided to the blast opening by the moving device 8 is operated by operating the switch of the operation panel 6 so that the hose feed roller device 4 is linked with the hose feed roller device 4. The feed or return speed of the hose 1 by the feed roller device 4 is 0.2 to 2 m / s.
ec is manually inserted into the hose 1 blast hole or automatically inserted at a preselected hose feed rate.

Thereafter, the inside of the blast hole is cleaned with the compressed air by interlocking with the opening of the air blowing valve of the explosive loading machine. Then, the feed distance of the hose 1 at the blast hole entrance is read by the distance sensor 5, and when the hose reaches the bottom of the hole, the hose feed slips and stops, and the depth of the blast hole is read. Thereafter, the hose 1 is returned by the operation panel 6 switch, and the air blowing valve is interlocked so as to be stopped. When the hose 1 comes to the mouth, the hose automatically stops at the distance previously read.

As described above, a parent die and a priming (a dynamite loaded with a priming, preferably electrically non-electric type priming such as a nonel priming) are used in the blasting opening in the blasting slot read by the distance sensor. And the feeding device is operated with the loading hose to feed. Next, the operation of feeding the hose 1 is stopped before the hole tail according to the parent die length set in advance on the operation panel 6.

When the hose 1 automatically returns to the explosive blowing start position (the position where it returns by 0.5 to 1 m), the explosive blowing valve of the loading machine is automatically opened, and the charging is started. Thus, when the injection completion position is reached, the explosive injection valve is closed and the transfer of the explosive from the loading machine is stopped. The blow-off valve opens automatically, allowing the explosive residue in the hose to be swept into the bore.

Thereafter, the apparatus is moved to the next blast hole and the above operation is repeated. At this time, the parent die position, the explosive blowing start position, and the blowing completion position may be continuously used,
You may set a new one. The above series of operations can be automatically switched so that they can be manually operated.

In the above-mentioned embodiment, the functions of the air loading machine include those having a function of simply carrying explosives by air, and those having two-stage switching between air blowing and carrying of explosives. Although the above embodiment has been described with reference to the two-stage switching, a model that only carries explosives can be used only by removing the part of the air blow. FIG. 3 shows an embodiment of the present invention, in which a swiveling elevating boom 9 and a mancage 10 for constructing a face of a large-section tunnel are used as moving equipment.

In the figure, P is a face, Q is a worker, R is a blast hole and other parts equivalent to those in the above embodiment are denoted by the same reference numerals. FIG. 4 shows a state in which the flowable explosive is being loaded by a worker from the front of the face P. In the figure, the same reference numerals are given to the same parts as those in the above-mentioned embodiments.

[0019]

According to the present invention, the operation of loading a flowable explosive into a blast hole with a hose connected to an air loader is automatically automated, and the insertion and withdrawal of the explosive-loaded hose into the blast hole is performed.
The aim is to ensure safe and reliable loading of explosives, reduce the labor of workers and improve the working environment.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of an automatic loading device for a flowable explosive according to the present invention.

FIG. 2 is a view taken in the direction of arrows in FIG. 1;

FIG. 3 is a vertical sectional side view showing an example of a use state of the device of the present invention.

FIG. 4 is a vertical sectional side view showing another example of another usage state of the device of the present invention.

FIG. 5 is a flowchart of an explosive loading step performed by the apparatus of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Explosive loading hose 2 Guide pipe 3 Hose feed mechanism 4 Hose feed roller device 4a Drive roller 4b Followed roller 5 Distance sensor 6 Operation panel 7 Slip adjustment device 8 Moving equipment 9 Revolving boom 10 Mancage P Facet Q Worker R blasting Hole

Claims (1)

(57) [Claims] 1. A guide pipe for guiding a fluid explosive loading hose linked to a pneumatic explosive loading machine to a blast opening, and a pair of opposed rollers for feeding the hose mounted on the guide pipe. A hose feed mechanism comprising a hose feed roller comprising: a slip adjusting device for adjusting a hose gripping force by the roller; a distance sensor for detecting a moving distance of the hose in a blast hole; and an operation panel of the hose feed mechanism. An automatic loading device for a flowable explosive, comprising: