JPS59167700A - Succession type blasting electric igniter - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electric ignition device for blasting of the following type and has a large number of parallel blasting output generating circuits that operate one by one at intervals of a certain period of time 1b. The blasting output generating circuit in the next stage is energized only after the full energization of the blasting output generating circuit is confirmed.

In general, an igniter with a parallel blasting output circuit detonates a large number of electric detonators at regular intervals of seconds, and the detonation force causes the explosion of the explosive to efficiently destroy rocks, and also has the effect of reducing vibration711] It is used for Shibebe-scale blasting, but because it blasts multiple stages in parallel, during the progress of blasting each stage, the blasting output circuit for the later stage is often disconnected by flying stones from the earlier stage's blast. occurs.

In this way, the electric detonator that connects to the disconnected blasting output circuit will cause the explosion to proceed again from the next stage blasting output circuit, but the blasting method was designed in consideration of the crushing effect. Therefore, only after the previous stage has been detonated can the next stage explode!
The detonator is designed to exert the detonating effect of all stages, so if even one non-explosive circuit occurs, even if the electric detonators and explosives in the circuits from the next stage explode, the overall crushing effect will be satisfactory. It becomes difficult to carry out the blasting operation again, instead of incurring unnecessary losses during the blasting operation.

Taking this into consideration, we installed a circuit in the parallel circuit based on the blasting design that receives a signal from the fX when the current is sequentially energized at time intervals such as one foot second and instructs the circuit to energize the next stage. If the circuit is completely energized, if the circuit is broken, the circuit cannot be energized, so no command signal can be obtained from now on, and the energization of the circuits after the broken circuit is automatically stopped. If the broken circuit is then checked and the ignition operation is performed again based on the normal circuit, unnecessary losses can be eliminated and effective blasting work can be continued.

In the present invention, as described above, the output circuit of each stage is provided with a circuit that detects all energization and provides a energization instruction signal to the next stage so that the next stage can be energized only after confirming the energization of the previous stage. This is an electric ignition device for blasting using the following formula.

Next, a complete circuit diagram of an embodiment of the present invention will be explained with reference to the accompanying drawings.

In the figure, 1a' and 1b are power input terminals, 2 is a start switch,
3 is a DC voltage adjustment circuit, which is a step-up rectifier circuit in the case of AC, and a DC-DC converter in the case of DC.

Also, 4 is a charging/discharging capacitor, and 5a.

5b are connected in series and parallel to the capacitor 4 (dividing resistor for dividing the total charged voltage + 50 is inserted in parallel with the dividing resistor 5b, and lights up when the capacitor 4 reaches a constant voltage) It is a neon rung that indicates 6
17-J is a push-button switch for stopping the igniter function, and is always closed. By opening the push-button switch 6, the capacitor 4 is connected to the discharge output circuit.

7a, 7b.

71, ... are SORs inserted at least one at a time to stop the operation of each blasting output circuit, and are normally in an open state, and a pulse command signal is sent to the gate terminals 7a, +7.
a217bl H71)2+ 7c, I 7C2”,
・It becomes normal only when it is observed. 8a,
8b.

8C... is a photocoupler, and when current flows through the circuit, the light-emitting diode "a+ +" BL + 8 CI is caused by a voltage drop of low resistance RI + R2+ "3""'.
, -0- emits light, and the phototransistors 8a1 and 8b2
, 8c21011. receive this light and become conductive, and a command signal is applied to the next stage SCa gate terminals 7b, 7b2 of the photocup 8a via the gate circuit 10, thereby making 5CI (7b conductive). Others 1
6a, 16b.

16C・1. ... are the output terminals of the circuits to which the electric detonators are connected, and 9 is the panel for setting the blasting delay time between each stage of the blasting output generating circuit. It is set in advance whether or not the current should be energized, and the time adjustment for outputting a command signal to the gate terminal of the gate circuit 10 is performed in conjunction with the counter 11 through the control circuit. 13
is the blast push button, and by pressing it all the way, the counter circuit 1 is activated.
Start counting 10 and send the count output to gate circuit 10.
The entire command signal is sequentially outputted to each SCR gate terminal by incorporating the setting of the delay time and time given to the SCR gate terminal.For this reason, the pulse generating circuit 12 generates a predetermined pulse and uses it as a power source for counting the counter circuit 110.

15 is a gate circuit 10. This is a switch that starts the counter circuit 11 and the pulse generation circuit 12, and the voltage conversion circuit 1
Connected to 4. Note that the voltage conversion circuit 14 becomes a voltage conversion rectifier circuit when the power source is AC, and when the power source is DC, it is a 12-gate circuit 4 circuits 1-0. Counter circuit 11. The voltage is applied to the pulse generation circuit 12 as a power supply voltage. Next, the sequence of operations performed by the apparatus of the present invention will be described according to the illustrated embodiment. First, each output terminal 16a of a multi-stage blasting output generation circuit connected in parallel.

16b, 16cm, -, 10 as a total electric detonator
(Of course, it may be one, or several dozen may be used depending on the energy held by the capacitor) and are connected in series. Also, set the seconds to 05 seconds on the seconds setting panel 9, and connect a 12V DC power supply to the power terminals 1a and 1b.
When switches 2 and 15 are turned on, circuits 3 and 10 are immediately turned on.
．． 11 and 12 are in operation. First, the circuit 6 boosts and rectifies the power supply voltage and starts fully charging the capacitor 4. When the capacitor 4 is charged until it reaches 300 volts, a neon Rung 5c lights up, indicating to the ignitor operator that the capacitor 4 has been charged to sufficient energy to output energy. When the igniter operator confirms that the neon lamp 5c is lit and presses the blasting push button 16, the counter circuit 11 starts counting and the set delay time is 05.
Seconds later, a command is given to the gate terminals 7a, 7a2 of 5OR7a through the gate circuit IQi to give a signal voltage to 61C.
R7a becomes conductive, and a discharge current flows from the capacitor 4 to the first blasting output generation circuit.

In this way, an output is generated from the first blasting output generating circuit and applied to the electric detonator connected thereto for detonation. On the other hand, when the current coupler 8a is energized, the light emitting diode 8a emits light due to the voltage generated by the resistor R1, and the light-receiving transistor 8a2 receives this light and gives a energization confirmation signal to the gate circuit 1o, so that the counter circuit 11 starts counting again. 05 seconds later, an instruction signal is given to the gate circuits 7b, 7b2 of 5oR7b included in the second blasting output generation circuit, and the SCR'71) is energized to the second blasting output generation circuit. is energized, and the electric torpedo connected to it detonates.

This process is repeated in sequence until the final blasting output generating circuit is set, with the electric detonators of each circuit being detonated at 5.05 second intervals.

According to the results of more than 10 experiments using the device of the present invention, it is possible to obtain excellent crushing results because the timing of energization to each circuit is accurate. Even if a blast occurs, the igniter function automatically strafes, so blasting can now be carried out in accordance with the precise blasting design without incurring losses like in the past. If you suddenly want to stop the blasting while the circuits are being energized at regular intervals of seconds, press the pushbutton switch 6 all the way to open the circuit between the capacitor 4, which is the energy source, and each blasting output generation circuit. Since the ignition function is stopped from the moment the push switch 6 is pressed, it functions as a safety device.

[Brief explanation of the drawing]

The figure is a circuit configuration diagram of an embodiment of the device of the present invention. In the figure, 1a and 1b are power input terminals, 4 is a charging/discharging capacitor, 5a and 5bu resistors, and 5c is a neon lamp. 2.6.15 is push button swing f + 7 a, 7 b,
7 c ---- is s' c R, 8a', 8b
, 8c , -, , , is a photo camera, 9 is a seconds setting panel 9. 10 is a gate circuit, 11 is a counter circuit, 12
is an oscillation circuit, and 16 is a blasting push button. 3.14 is a voltage conversion rectifier circuit, 16a, 16b, 16c
0115. is the output terminal of the blasting output generation circuit. Agent Hidemi Horie□'', 71st Procedural Amendment (spontaneous) April 2, 1980 Kazuo Wakasugi, Commissioner of the Japan Patent Office1, Indication of the case 1982 Percentage Application No. 407942, Invention Name Sequential Blasting Electric Ignition Device 3 Relationship to the Case of Person Who Amends Patent Applicant Address (Residence) 2-1 Marunouchi-chome, Chiyoda-ku, Tokyo Name (Name) (408) President and Director of Nippon Kayaku Co., Ltd. Tsunekazu Itano (1 company) 4. Address: 4-9-5 Toranomon 2-chome, Minato-ku, Tokyo Contents of amendment to the date of the amendment order (1) The scope of the patent claims of this application is amended as shown in the attached sheet. (2) “Ignition” is replaced with “ignition” on page 3, line 16 of the specification of the present application.
and correct it. (3) Correct ``F operation stop J'' on page 4, line 16, to ``Switch green production.'' (4) Correct ``normal state'' on page 5, line 1, to ``conducting state.'' (5) On page 6, line 2, "Pulse generation" is corrected to "Generate pulse." (6) On page 7, line 2 of the same page, replace ``Shishinaru.'' with ``Nilru.''
and correct it. (7) On page 7, line 8, “lighting device” is amended to “ignition, device.” (8) Submit the power of attorney as shown in the attached sheet. (*4 R1
4,'Q]''?Ih'A,, )Claims (1) A blasting output generation circuit in which outputs are output one by one in a large number of parallel configurations, and a blasting output generation circuit in the preceding stage. Check the blasting output and instruct the operation of the next stage blasting output generation circuit.
For sequential blasting, the method is characterized by comprising an operation confirmation and instruction circuit that provides an indication, so that if any of the blasting output generating circuits is disconnected, the subsequent blasting output generating circuits are automatically stopped from operating. Electric igniter. (2) The sequential blasting-air ignition device according to claim 1, which includes a photocoupler in series with each circuit for checking the blasting output of each of the blasting output generating circuits. 433-

Claims (2)

[Claims] (1) Check the blasting outputs of the blasting output generation circuits, which output one output at a time in parallel, and the previous stage blasting output generation circuit, and give operation instructions to the next stage blasting output generation circuit. A sequential electric ignition device for blasting, characterized in that it is equipped with an operation confirmation and instruction circuit so that if any of the blasting output generation circuits has a failure, the subsequent blasting output generation circuits are automatically stopped from operating. . (2) The sequential electric ignition device for blasting according to claim 1, which includes seven Otokabufu metals in series with each circuit for checking the blasting output of each of the blasting output generating circuits.