JP2011163745A - Cartridge assembly for blasting crush rock - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cartridge assembly for blasting capable of improving construction performance and initial ignition efficiency, and reducing a misfire rate. <P>SOLUTION: This cartridge assembly includes: a cartridge cover 50 having the shape of a given length in the longitudinal direction and hollow inside, and provided with a connection projecting end 51 on one end and a connection thread groove 56 on the other end; and an ignition plug including a connecting section having a thread 55 on a part of its outer peripheral face to be connected with the connection thread groove 56 of the cartridge cover 50, a PCB board disposed on one end of the connecting section and including a number of circuit elements, a probe having a pair of electrodes electrically connected to the PCB board, and a housing connected to one end of the connecting section to receive the PCB board. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

The present invention relates to a cartridge assembly for blasting for rock crushing, and more particularly, to blasting for rock crushing that can improve construction performance, improve initial ignition efficiency, and reduce non-occurrence rate. The present invention relates to a cartridge assembly for use.

    In general, in order to increase work efficiency during tunnel excavation and subway construction, explosives are attached so that rocks and rocks are crushed with a strong impact.

    As explosives mounted in this way, explosives and dynamite have been mainly used. However, in the case of explosives such as explosives and dynamite, not only is there a risk of explosion due to carelessness or impact during the storage or transportation process, but there is a considerable explosion in the explosion process. Occurs and adversely affects the surrounding environment.

    Recently, as an explosive for crushing rock mass, instead of explosives and dynamite, current is rapidly discharged to metal oxide that causes oxidation reaction, and the electrolyte and metal oxide placed in the cartridge undergo oxidation reaction A “rapidly expanded metal mixture” is used in which the medium is expanded and heated to give an impact to the periphery of the medium so that the object is crushed.

    The rapidly expanding metal mixture includes a metal salt that is an oxidant, a metal powder that is oxidized by the metal salt and increases in volume by an exothermic reaction, a reaction accelerator that accelerates an oxidation reaction of the metal salt and the metal powder, and the like. It consists of a rapidly expanding metal mixture to be mixed.

    In order to promote the oxidation reaction between the metal salt and the metal powder, a solution obtained by dissolving ammonium borate, nitrate, sulfate, etc. in glycerins such as ethylene glycol and alcohols is used as the electric spark induction electrolyte. It was.

    FIG. 1 is an exemplary view showing a conventional cartridge structure for blasting for rock crushing. As shown in FIG. 1, a conventional cartridge structure includes a cylindrical case 11 in which a metal oxide is placed, an upper cap 12 and a lower cap 13 that close the upper and lower portions of the case 11, and an interior of the case 11. It is comprised from the both-sides terminal 14, the power supply part 17 which supplies an electric current to the said terminal 14, and the electric wire 16 so that a big electric current may be applied to the accommodated medium.

    Here, a predetermined spacing layer is formed between the both side terminals 14, and an initiation wire 15 is connected between the terminals 14.

    With the configuration as described above, switching is performed by the power supply unit 17, a large current flows between the pair of terminals 14, and the initiation wire 15 is discharged to form a plasma channel. In the process of generating in such a plasma channel, the volume of the metal expansion agent 20 expands and enlarges the blast hole.

However, the conventional blasting cartridge has a problem that the discharge efficiency transmitted to the metal oxide is not improved because the initiation wire is connected to the case in a short diameter direction. In addition, the metal oxide housed inside the case is deposited at the bottom of the case during storage or movement, so that the voids between the oxides become dense, and an air layer is formed above the case. There remains a problem that acts as a factor that lowers the initiation performance of the initiation wire.

The present invention has been made in view of the above problems, and is a cartridge assembly for blasting for rock mass crushing that can improve the construction performance, increase the initial ignition efficiency, and reduce the misfire rate. The purpose is to provide.

According to one embodiment of the present invention for achieving the above object, the shape has a certain length in the longitudinal direction and is vacant in the interior, and has a connecting protruding end at one end, A cartridge cover having a connecting screw groove formed at an end thereof; a connecting part having a thread formed on a part of an outer peripheral surface so as to be connected to the connecting screw groove of the cartridge cover; and an end of the connecting part A PCB board provided with a number of circuit elements; a probe having a pair of electrodes electrically connected to the PCB board;
A blasting cartridge assembly for rock crushing is provided, including a spark plug provided with a housing coupled to one end of the connecting portion to receive the PCB board.

    It is preferable that an igniter-containing cup for protecting the electrode and charging the igniter is inserted into the probe of the spark plug.

    It is preferable that a dust cap having a diameter of one end penetrated larger than the diameter of the other end is attached to the tip of the ignition agent storage cup.

    Preferably, at least one spline groove is formed on one end surface of the housing of the spark plug so as to induce a forward explosion.

    It is preferable that at least one crimping line for improving airtightness is formed on an outer peripheral surface of the housing where the housing and the connecting portion of the spark plug are coupled.

    It is preferable that a packing ring for improving airtightness is attached to the connecting portion of the spark plug when the cartridge cover is coupled.

    It is preferable that a packing ring for maintaining airtightness is fitted to the connecting protruding end of the cartridge cover.

An end of the cartridge cover in which the connection screw groove is formed has a separate coupling member screwed into the end of the cartridge cover, and the connection member has the connection screw groove formed therein, and the connection screw. A finished portion in a sealed state is formed at the end of the groove, and a cutting line is formed so that the periphery of the finished portion can be easily removed by an external force.

    According to the present invention, a large number of cartridge covers can be quickly installed in a row, and there is an effect of improving construction efficiency.

In addition, the present invention can improve the initial ignition efficiency at the time of blasting through the spark plug provided on the cartridge cover, reduce the initial misfire rate, and achieve stable and quick blasting performance.

It is an illustration figure which shows the cartridge structure for blasting for the conventional rock crushing. FIG. 4 is an exemplary view illustrating a cartridge cover of a blasting cartridge assembly for crushing rock according to an embodiment of the present invention. FIG. 5 is an exemplary view illustrating a state in which a cartridge cover of a blasting cartridge assembly for rock crushing according to an embodiment of the present invention is continuously installed. FIG. 5 is an exemplary view illustrating a finishing portion of a cartridge cover of a blasting cartridge assembly for crushing rock according to an embodiment of the present invention. FIG. 3 is an exemplary view illustrating a state in which a spark plug of a blasting cartridge assembly for crushing rock according to an embodiment of the present invention is coupled. It is a block diagram which shows each component of the ignition plug of the cartridge assembly for blasting for rock crushing by one Example of this invention. 1 is a perspective view of a spark plug of a blasting cartridge assembly for crushing rock according to an embodiment of the present invention.

    Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

    First, the blasting cartridge assembly of the present invention is largely composed of a cartridge cover 50 and a spark plug 70 coupled thereto.

    FIG. 2 is an exemplary view illustrating a cartridge cover of a blasting cartridge assembly for crushing rock according to an embodiment of the present invention, and FIG. 3 is a blasting cartridge assembly for crushing rock according to an embodiment of the present invention. FIG. 4 is an exemplary view showing a finished part of a cartridge cover of a blasting cartridge assembly for crushing rock according to an embodiment of the present invention.

    As shown in FIGS. 2 to 4, the cartridge structure 50 of the blasting cartridge assembly is formed of a longitudinal cylinder. In addition, a projecting end 51 having a thread 52 formed at one end is formed, and the other end coupling portion 54 having a thread 55 formed on the outer periphery is formed at the other end.

    Further, a connecting member 60 is separately fastened to the other end connecting portion 54, and the connecting member 60 has a connecting screw groove 62 formed therein. In addition, a sealed finish portion 61 is formed at the inner end of the connecting screw groove 62.

    Here, the finishing portion 61 is formed with a cutting line 63 in the periphery thereof, and when the protruding end 51 of another cartridge structure 50 a is inserted, the finishing portion 61 is easily removed along the cutting line 63. .

    On the other hand, such a cartridge structure 50 is connected long in series as shown in FIG. That is, it is possible to easily connect a large number in series by fastening and attaching the protruding end 51 of the first cartridge structure 50a to the connection screw groove 62 of the second cartridge structure 50b.

    Here, when the packing ring 59 is connected to the protruding end 51 and a plurality of cartridge structures are connected in series, it is natural that the airtightness of the connecting portions can be improved.

    FIG. 5 is an exemplary view showing a state in which a spark plug of a blasting cartridge assembly for crushing rock according to an embodiment of the present invention is coupled, and FIG. 6 is a diagram for crushing rock according to an embodiment of the present invention. FIG. 7 is a block diagram showing components of a spark plug of the blasting cartridge assembly, and FIG. 7 is a perspective view of the spark plug of the blasting cartridge assembly for rock crushing according to one embodiment of the present invention.

    As shown in FIGS. 5 and 7, the spark plug 70 of the blasting cartridge assembly is mounted and installed on a coupling member 60 coupled to the end of the cartridge assembly 50.

    Specifically, the spark plug 70 is largely composed of a connecting portion 74 formed with a screw thread and a PCB board 76 provided with various circuit elements. Here, a hexagon bolt head portion 77 is formed at the tip of the connecting portion 74 so as to be easily engaged, and an O-ring 75 for sealing is fitted between the hexagon bolt head portion 77 and the connecting portion 74. It has been.

    On the other hand, a PCB board 76 for delaying the blasting signal is connected to the end of the connecting part 74. Specifically, the PCB board 76 is formed with a bridge 74a extending from the connecting part 74 and soldered to the bridge 74a. It is provided in the attached state.

    A pair of electrodes 73 electrically connected to the circuit elements are formed at the end of the PCB board 76. Specifically, the probe 73a is formed with the electrodes 73 soldered to the inside. , Coupled to the PCB board 76. A mounting projection 73b is formed on the outer peripheral surface of the probe portion 73a. An unexplained symbol 'L' is a leg line for supplying a current to the electrode 73.

    Here, in order to protect the electrode 73, an igniter accommodating cup 72 is fitted to the end of the PCB board 76, and the igniter accommodating cup 72 is ignited with an explosive charged in the housing 71. A small amount of igniting agent is contained, and in this state, the igniting agent containing cup 72 is fitted to the electrode 73 of the PCB board 76. Further, the ignition agent storage cup 72 has a partition wall 72a formed therein, and a mounting groove 72b to be fastened to the mounting protrusion 73b of the probe portion 73a is formed on the inner peripheral surface.

    On the other hand, a dust cap 78 is attached to the ignition agent storage cup 72. The dust cap 78 has a funnel shape (penetrated shape) in which the diameter at one end is larger than the diameter at the other end.

    When the PCB board 76 is inserted into the housing 71, the dust cap 78 having such a shape is formed by the explosive charged in the housing 71 due to the pressure with which the PCB board 76 is drawn and pressurized. 71 is applied as a means for preventing discharge to the outside of 71.

    That is, the dust cap 78 has a size in close contact with the inner diameter of the housing 71 and has a wide upper portion and a narrow lower portion. Therefore, when the PCB board 76 is pulled into the housing 71, the explosive charged in the housing 71 is used. Is prevented from being discharged to the outside, and air inside the dust cap 78 escapes from a narrow hole, so that the stable ignition plug 70 can be assembled.

    On the other hand, when the PCB board 76 is inserted into the housing 71 and the connecting portion 74 and the housing 71 are coupled, the coupling portion of the housing 71 is crimped and a crimping line 79 is formed, thereby sealing the inside of the housing 71. be able to. Thereby, the water tightness with respect to groundwater can also be improved.

    A large number of spline grooves S are formed on the front end surface of the housing 71 for inducing an explosion forward when the spark plug 70 is detonated. As a result, the explosive force of the spark plug 70 can be concentrated forward at the time of explosion, and can be transmitted intensively to the explosive charged in the cartridge cover 50, thereby reducing the misfire rate.

Although the present invention has been illustrated and described with respect to specific embodiments, the present invention is not limited to the above-described embodiments, and those having ordinary knowledge in the technical field to which the present invention belongs will be described below. Various modifications can be made without departing from the spirit of the technical idea of the present invention described in the claims.

50: Cartridge cover 51: Connection projecting end 52, 55: Screw thread 53: Cartridge body 54: Other end coupling portion 56: Connection screw groove 60: Connection member 61: Finishing portion 70: Spark plug 71: Housing 72: Ignition agent accommodation Cup 73: Electrode 74: Connecting part 75: Packing ring 76: PCB board 78: Dust cap

Claims (9)

A cartridge cover having a fixed length in the longitudinal direction and having a hollow interior, a connection protruding end formed at one end, and a connection screw groove formed at the other end;
A blasting cartridge assembly for rock mass crushing, comprising a spark plug coupled to the connecting screw groove of the cartridge cover. The spark plug is
A connecting portion in which a screw thread is formed on a part of the outer peripheral surface so as to be coupled to the connecting screw groove;
A PCB board provided at one end of the connecting portion and provided with a number of circuit elements;
A probe having a pair of electrodes electrically connected to the PCB board;
The blasting cartridge assembly for crushing a rock mass according to claim 1, further comprising a housing coupled to one end of the connecting portion so as to receive the PCB board.     The blasting material for crushing rock according to claim 2, wherein the probe of the spark plug is inserted with an igniter-containing cup that protects the electrode and into which the igniter is charged. Cartridge assembly.     4. The cartridge assembly for blasting according to claim 3, wherein a dust cap having a diameter of one end penetrating larger than a diameter of the other end is attached to a tip of the ignition agent storage cup. .     The cartridge assembly for blasting according to claim 2, wherein at least one spline groove is formed on one end surface of the housing of the spark plug so as to induce a forward explosion. .     The at least one crimping line for improving airtightness is formed on an outer peripheral surface of the housing to which the housing and the connecting portion of the spark plug are coupled. Cartridge assembly for blasting of rock.     3. The blasting cartridge assembly for crushing rock according to claim 2, wherein a packing ring for improving airtightness is attached to the connecting portion of the spark plug when the cartridge cover is coupled.     The blasting cartridge assembly for crushing a rock mass according to claim 1, wherein a packing ring for maintaining airtightness is fitted to the projecting end of the cartridge cover. The end of the cartridge cover in which the connecting screw groove is formed is a separate coupling member that is screwed to the end of the cartridge cover,
The coupling member is formed with the connecting screw groove therein, and an end portion of the connecting screw groove is formed with a sealed finish.
The blasting cartridge assembly for crushing a rock mass according to claim 1 or 8, wherein a cutting line is formed so that a periphery of the finishing portion can be easily removed by an external force.

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