JPH11247576A - Shutdown device for dust collector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To avoid the closing of a cutting conveying passage by arranging a moisture sensor on the inlet side of the cutting conveying passage for a dust collector collecting the cutting of a drilling machine and stopping the operation of the dust collector by the detecting value of moisture. SOLUTION: Cutting discharged to the outside of a pit by blow air generated by drilling is conveyed to a pre-cleaner 13 through a transport pipe 15 form a suction cap 12, and coarse cutting is collected. Fine cutting is collected by a dust collector 14. A moisture sensor S is disposed at a place in the vicinity of the suction cap 12, and a decision section 20 is installed into a control panel 19 on a truck 2. The moisture sensor S detects the moisture of cutting, and transmits a detecting value to the decision section 20. The detecting value is compared with beforehand stored data in the decision 20, and whether or not suction stoppage is required is judged. Since a stop signal is transmitted at the time of much moisture content and a fan 17 for the dust collector 11 is stopped, trouble, in which cutting adheres on a side wall in the cutting conveying passage and the passage is closed, is avoided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to the present invention, when water or dust containing water is discharged at the time of drilling, the discharged material enters into the dust transport path of the dust collector and adheres to a side wall or the like. The present invention relates to a dust collection device operation stop device that stops the operation of a dust collection device so as not to block a dust transport path.

[0002]

2. Description of the Related Art In mining, quarrying, and civil engineering sites, a drilling machine is used to drill blast holes in rock.
The drilling machine is provided with a striking mechanism and a rotating mechanism, and a rod is attached to the front end. At the time of drilling, the striking mechanism and the rotating mechanism strike and rotate the bit at the tip of the rod.

At this time, the tip of the bit crushes the rock to generate powder. The generated milled powder is usually discharged out of the hole by a blower. The dust is collected by a dust collecting device in order to suppress dust at a drilling work site and improve a working environment.

[0004]

However, in the case where water flows out of a water-containing layer, a groundwater vein, etc. into a drilling hole and is discharged together with the dust, the dust containing water or mud-like clay is discharged. The discharged material may be sucked into the dust conveying path of the dust collecting device and adhere to a side wall or the like, thereby closing the dust conveying path. If the dust transport path is blocked, the dust collection device will not be able to collect the dust, so workers will have to work to find the blocked location and remove the adhering waste, and work efficiency will be reduced. descend.

SUMMARY OF THE INVENTION The present invention solves such a problem in drilling work. When discharge such as dust containing water is discharged into the drill, the discharge is reduced by a dust collector. An object of the present invention is to provide a dust collection device operation stop device that stops the operation of the dust collection device so that the dust collection device is not sucked into the transport path and adheres to a side wall or the like to block the dust transport path.

[0006]

According to the present invention, there is provided a dust collecting apparatus operation stop device, comprising: a moisture sensor disposed on an inlet side of a dust conveying path of a dust collecting apparatus for collecting dust of a drilling machine; A determination unit configured to determine whether or not to stop the suction based on the detection value of the moisture sensor and to stop the operation of the dust collector when necessary.

[0007] The powder generated during drilling is discharged out of the hole by a blower and collected by a dust collecting device. At this time, the moisture sensor arranged on the entrance side of the dust conveying path of the dust collector detects the moisture of the discharged matter discharged and conveyed together with the dust, and sends the detected value to the determination unit. The judging unit compares the detected value with pre-stored judging data indicating the relationship between the water content of the effluent and the occurrence of the trouble to judge whether or not the suction should be stopped. When it becomes necessary to stop the suction due to an increase in the water content, the determination unit outputs a stop signal to stop the operation of the dust collector.

Accordingly, even if the discharged material such as dust containing water is discharged into the drilling hole, the discharged material is sucked into the dust conveying path of the dust collecting device and adheres to the side wall or the like, and the dust is conveyed. Troubles such as obstructing the vehicle can be avoided.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a perspective view of a crawler drill provided with a dust collector operation stop device according to an embodiment of the present invention, and FIG. 2 is a configuration diagram of the dust collector operation stop device. .

The crawler drill 1 has a boom 3 at the front of a bogie 2, and the tip of the boom 3 supports a guide shell 5 on which a rock drill 4 is mounted. Rock drill 4
Is provided with a striking mechanism 6 and a rotating mechanism 7, and is fed by a feed mechanism 8 provided on the guide shell 5 and moves back and forth along the guide shell 5. A rod (not shown) having a bit attached to the tip is mounted on the rock drill 4.

The crawler drill 1 has a dust collecting device 11 for collecting powder. The dust collecting device 11 includes a suction cap 12 provided at a distal end portion of a guide shell and covering a drill hole, a pre-cleaner 13 for collecting coarse-grained dust, and a dust collector for collecting fine-grained dust. 1
The dust transport pipes 15 and 16 are connected between the suction cap 12 and the pre-cleaner 13 and between the pre-cleaner 13 and the dust collector 14 to form a dust transport path.

The dust collector 14 is provided with a fan 17 for sucking the dust. The dust generated by the drilling and discharged to the outside of the hole by the blower is first removed from the suction cap 12 to the dust conveying pipe 15. After passing through the pre-cleaner 13 through which the coarse dust is collected, the dust reaches the dust collector 14 via the dust transport pipe 16 and the fine dust is collected there. I have.

The suction cap 12 of the powder conveying pipe 15
A moisture sensor S for detecting the moisture of the discharged matter discharged and conveyed together with the powder is arranged at a position close to. The control unit 19 installed on the trolley 2 includes a determination unit 2.
0 is provided.

The moisture sensor S is an electric resistance type sensor, and as shown in FIG. 2, electrodes 23 and 24 are installed on opposing side walls 21 and 22 of the powder conveying pipe 15, respectively. A predetermined voltage is applied during 24. When the moisture of the discharge D such as the powder conveyed inside the powder conveying pipe 15 increases, the resistance between the electrodes 23 and 24 decreases and the discharge current between the electrodes 23 and 24 increases. The moisture of D can be detected as an electric current or a resistance value. The detection value of the moisture sensor S is sent to the determination unit 20 as a signal.

The judging section 20 preliminarily stores judgment data indicating the relationship between the water content of the various kinds of discharged materials D and the occurrence of troubles, the detection values of the water sensor S in the drilling holes and the memory. A comparing means for comparing the determination data with the determination data to determine whether or not to stop the suction;

At the time of drilling, the bit at the tip of the rod is hit and rotated by the striking mechanism 6 and the rotating mechanism 7 to drill. At this time, the tip of the bit crushes the rock to generate milling. The generated dust is discharged out of the hole by the blower of the rock drill 4, and is first conveyed from the suction cap 12 to the precleaner 13 through the dust conveying pipe 15, and the coarse dust is collected by the precleaner 13. Is done. Thereafter, the uncollected fine powder is transferred to the powder transport tube 16.
The dust reaches the dust collector 14 through which the fine dust is collected.

In the drilling, the moisture sensor S detects the moisture of the dust D and other discharged materials D, and sends the detected value to the judgment unit 20. The determination unit 20 compares the detection value of the moisture sensor S with the determination data stored in advance to determine whether or not the suction stop is necessary. When it becomes necessary to stop the suction due to the increase of the water content, the determination unit 20 sends a stop signal to the dust collector stop circuit 25 to stop the fan 17 of the dust collector 11.

Therefore, even if the discharged material D such as dust containing water is discharged into the drilling hole, the discharged material D is sucked into the dust-conveying path of the dust collecting device 11 and is transferred to the side walls 21, 22 and the like. Troubles such as sticking and blocking of the powder conveying path are avoided.

At this time, since the discharged material D such as dust contains moisture, even if the dust collection by the dust collecting device 11 is stopped, the dust scatters and floats on the drilling work site. There is no risk that the environment will deteriorate.

FIG. 3 is a block diagram showing another example of a device for stopping the operation of the dust collector. Here, the electrode 2 of the moisture sensor S
The reference numerals 3 and 24 are installed on the side wall 21 of the powder conveying pipe 15 in close proximity to each other.

When the water content of the discharge D such as the powder conveyed inside the powder conveying pipe 15 increases, the discharge D starts to adhere to the side wall 21. Then, the electrodes 23 and 24 are short-circuited by the waste D containing moisture, the resistance is reduced, and the current between the electrodes 23 and 24 is increased. Therefore, the moisture of the waste D is detected as an electric current or a resistance value. Can be. Other configurations are shown in FIG.
It is similar to that of

[0022]

As described above, according to the dust collector operation stop device of the present invention, when discharged materials such as dust containing water are discharged into the drilling holes, the discharged materials are collected. The trouble can be avoided by stopping the operation of the dust collecting device so that the dust collecting device is not sucked into the dust conveying route of the apparatus and adheres to the side wall or the like to block the dust conveying route.

[Brief description of the drawings]

FIG. 1 is a perspective view of a crawler drill provided with a dust collector operation stop device according to an embodiment of the present invention.

FIG. 2 is a configuration diagram of an operation stopping device of the dust collecting device.

FIG. 3 is a configuration diagram showing another example of the operation stopping device of the dust collecting device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 crawler drill 2 cart 3 boom 4 rock drill 5 guide shell 6 hitting mechanism 7 rotation mechanism 8 feed mechanism 11 dust collector 12 suction cap 13 precleaner 14 dust collector 15 dust conveying pipe 16 dust conveying pipe 17 fan 20 judgment unit 21 side wall 22 side wall 23 electrode 24 electrode 25 dust collector stop circuit D discharge S moisture sensor

Claims (1)

[Claims] 1. A moisture sensor disposed on an inlet side of a dust conveying path of a dust collecting device for collecting dust in a drilling machine, and determining whether or not to stop suction based on a detection value of the moisture sensor. A device for stopping operation of the dust collector when necessary.