Pneumatic charging machine structure of emulsion explosive cartridge

Abstract

The utility model discloses a pneumatic charging machine structure for emulsion explosive cartridges. Automatic pneumatic charging of the emulsion explosive cartridges is achieved. A charging conveying channel of an explosive cartridge (301) is formed by the feeding port barrel (204), the front conical cavity (203), the charging airflow conveying main pipe (201), the front conical cavity (203), the discharging port barrel (205) and the conveying hose (206). A first compressed air inlet (208) is formed in the cavity wall of the front conical cavity (203), a second compressed air inlet (207) is formed in the cavity wall of the rear conical cavity (202), a normally-closed contact (222) on a compressed air switch valve (215) penetrates through the outer side wall of the charging airflow conveying main pipe (201) and then is arranged in a pipe cavity of the charging airflow conveying main pipe (201), the front end of the normally-closed contact (222) can be matched with a mechanical arm, and the rear end of the normally-closed contact (222) can be matched with the mechanical arm. And the rear end is connected with an explosive cartridge conveying mechanism, and full-automatic charging of the two cartridges is automatically achieved through a pneumatic method.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of intelligent charging system of blasting hole in tunnel blasting excavation, in particular to a kind of structure of emulsion explosive roll pneumatic charging machine and its pneumatic charging method. BACKGROUND

[0002] In the process of tunnel blasting excavation construction, the filling of detonating charge and explosive charge is the most important link in the whole construction process, and the filling efficiency and quality of the charge directly affect the progress of blasting excavation and the construction quality of the whole tunnel; Due to the limitation of the tunnel excavation environment, the tunnel blasting explosive is generally filled in the form of emulsion explosive roll into the blasting hole drilled on the excavation working face; The detonating charge is generally made into a sausage-like form structure, and an electronic detonator is embedded in the detonating charge roll; The lead wire of the electronic detonator is led out of the detonating charge roll and connected with the terminal box; The shape of the explosive charge is similar to a complete sausage, and only emulsion explosive is coated in the cylindrical coating; The charge of each blasting hole is to fill a detonating charge roll at the bottom of the blasting hole, and the lead wire of the detonator of the detonating charge roll is thrown out of the blasting hole to the working face outside the blasting hole, so that the terminal box connected with the outer end of the lead wire of the detonator is arranged on the working face outside the blasting hole; Then, a plurality of explosive charge rolls are sequentially filled to fill the blasting hole with explosive; After the filling of the explosive charge in all blasting holes on the blasting working face is completed, the terminal boxes at the outer ends of the lead wires of the detonators of the detonating charge rolls are connected to the busbar, and finally, the blasting signal is sent through the busbar to detonate the explosive filled on the working face, thereby realizing the blasting excavation of the tunnel.

[0003] At present, in the tunnel blasting construction, the emulsion explosive roll (detonating charge roll and explosive charge roll) is filled into the blasting hole by manual charging method, and the operator works in a high temperature, high humidity and high dust environment; Since the blasting working face is as high as ten meters or more, high-intensity manual explosive filling is carried out at high altitude, which has the risk of high-altitude operation; In addition, the construction environment is harsh, the explosive filling quality is not high, the labor intensity is too large, and the charging efficiency is low; Therefore, how to develop a convenient and reliable charging mechanism and method has become an urgent problem to be solved in the construction site. SUMMARY

[0004] The present application provides a kind of emulsion explosive roll pneumatic charging machine structure, which realizes the automatic pneumatic charging of emulsion explosive roll and solves the technical problems of high labor intensity and low charging efficiency in emulsion explosive roll charging.

[0005] The present application solves the above technical problems by the following technical solutions:

[0006] The general idea of the present application is to develop a front end that can cooperate with a mechanical hand to carry out the pneumatic transmission of the primer, and a rear end that can cooperate with an explosive cartridge transmission mechanism to carry out the pneumatic transmission of the explosive cartridge, so as to realize one gun for two purposes and automatically realize the full-automatic charging of the two cartridges by using the pneumatic method.

[0007] The structure of the pneumatic charging machine for the emulsion explosive cartridge comprises a pneumatic machine support, a charging airflow delivery main pipe arranged on the pneumatic machine support, a compressed air access pipe arranged on the outside of the pneumatic machine support, a rear conical cavity communicated with the left end port of the charging airflow delivery main pipe, a feeding port cylinder communicated with the left end port of the rear conical cavity, a front conical cavity communicated with the right end port of the charging airflow delivery main pipe, a discharging port cylinder communicated with the right end port of the front conical cavity, a conveying hose connected with the right end port of the discharging port cylinder, a compressed air first inlet arranged on the cavity wall of the front conical cavity, a compressed air second inlet arranged on the cavity wall of the rear conical cavity, a compressed air switch valve connected with the outside wall of the charging airflow delivery main pipe, a normally closed contact of the compressed air switch valve arranged in the pipe cavity of the charging airflow delivery main pipe after penetrating through the outside wall of the charging airflow delivery main pipe, a valve body input port, a valve body first output port and a valve body second output port arranged on the compressed air switch valve respectively; when the normally closed contact is not triggered, the valve body second output port is in a closed state, and the compressed air entering the compressed air switch valve is output from the valve body first output port; when the normally closed contact is triggered, the valve body second output port is in an open state, and the compressed air entering the compressed air switch valve is output from the valve body first output port and the valve body second output port respectively; a compressed air access pipe is connected with the valve body input port, a compressed air second delivery pipe is connected between the valve body second output port and the compressed air second inlet, and a compressed air first delivery pipe is connected between the valve body first output port and the compressed air first inlet; a one-way flap valve is arranged at the connection between the feeding port cylinder and the rear conical cavity, and the one-way flap valve can only be flipped to the inside of the rear conical cavity.

[0008] A pressure-adjustable pressure reducing valve is connected in series on the compressed air access pipe, and a reduced-pressure compressed air delivery pipe is connected between the pressure reducing output port of the pressure reducing valve and the compressed air input port.

[0009] A normally closed contact control air pipe is connected between the compressed air access pipe and the normally closed contact control port of the compressed air switch valve, and the compressed air in the compressed air access pipe enters the compressed air switch valve through the normally closed contact control air pipe, so that the normally closed contact is in a normally closed state by air pressure.

[0010] The application discloses a pneumatic charging method for an emulsion explosive initiating cartridge of a pneumatic charging machine, characterized in that a mechanical hand holds a cartridge taking pipe connected to a conveying hose front end port; when the cartridge taking pipe is provided with an initiating cartridge, compressed air sequentially passes through a compressed air access pipe, a pressure reducing valve, a valve body input port, a compressed air switch valve, a valve body first output port, a compressed air first conveying pipe and a compressed air first gas inlet, and enters into a front conical cavity, a charging gas flow conveying main pipe and a rear conical cavity which are in communication with each other; at this time, a one-way flap valve seals a connection between the inlet port cylinder and the rear conical cavity, and the initiating cartridge in the cartridge taking pipe is shot forward under the pressure of the compressed air, so that the initiating cartridge enters into a blasting hole, thereby completing the charging of the initiating cartridge.

[0011] When the cartridge taking pipe is in an empty state, an explosive cartridge is conveyed into the inlet port cylinder, and the explosive cartridge opens the one-way flap valve under the action of inertia and enters into the charging gas flow conveying main pipe; the one-way flap valve resets to seal the connection between the inlet port cylinder and the rear conical cavity again; at this time, the explosive cartridge pushes up the normally closed contact to trigger, and the valve body second output port is opened; at this time, the compressed air in the compressed air switch valve enters into the rear conical cavity through the compressed air second conveying pipe, and derives the explosive cartridge to move rightward; at the same time, the compressed air in the compressed air switch valve enters into the front conical cavity through the compressed air first conveying pipe, and is sprayed rightward along the outlet port cylinder, the conveying hose and the cartridge taking pipe, thereby forming a suction effect on the explosive cartridge on the left side; under the action of the two compressed air flows, the explosive cartridge accelerates to pass through the outlet port cylinder, the conveying hose and the cartridge taking pipe and then enters into the blasting hole, thereby completing the charging of the explosive cartridge.

[0012] The application only needs to provide a stable pressure air source on site to continuously work, has a simple and compact structure, and can realize automatic charging of the initiating cartridge and the explosive cartridge, reduces the charging construction cost and improves the charging quality. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a three-dimensional structure schematic diagram of the charging machine of the application;

[0014] Figure 2 is a three-dimensional structure schematic diagram of the charging machine of the application;

[0015] Figure 3 is a structure schematic diagram of the application when the initiating cartridge 101 is pneumatically charged;

[0016] Figure 4 is a structure schematic diagram of the application when the explosive cartridge 301 enters into the inlet port cylinder 204;

[0017] Figure 5Fig. 3 is a structural schematic diagram of the explosive cartridge 301 of the present application when it is being fed into the main gas flow conveying pipe 201;

[0018] Figure 6 Fig. 4 is a structural schematic diagram of the explosive cartridge 301 of the present application when it is being ejected from the cartridge taking pipe 401. DETAILED DESCRIPTION

[0019] The present application will be described in detail below with reference to the accompanying drawings:

[0020] The application discloses a structure of a pneumatic charging machine for an emulsion explosive roll, which comprises a pneumatic machine support 209, a charging air flow conveying main pipe 201 arranged on the pneumatic machine support 209, a compressed air access pipe 210 arranged on the pneumatic machine support 209 outside the charging air flow conveying main pipe 201, a rear conical cavity 202 communicated with a left end port of the charging air flow conveying main pipe 201, a feeding port cylinder 204 communicated with a left end port of the rear conical cavity 202, a front conical cavity 203 communicated with a right end port of the charging air flow conveying main pipe 201, a discharging port cylinder 205 communicated with a right end port of the discharging port cylinder 205, a conveying hose 206 connected with the right end port of the discharging port cylinder 205, and the feeding port cylinder 204, the front conical cavity 203, the charging air flow conveying main pipe 201, the front conical cavity 203, the discharging port cylinder 205 and the conveying hose 206 form a charging and conveying channel of an explosive roll 301; a compressed air first inlet 208 is arranged on a cavity wall of the front conical cavity 203, a compressed air second inlet 207 is arranged on a cavity wall of the rear conical cavity 202, a compressed air switch valve 215 is connected with an outer side wall of the charging air flow conveying main pipe 201, a normally closed contact 222 on the compressed air switch valve 215 is arranged in a pipe cavity of the charging air flow conveying main pipe 201 after penetrating through the outer side wall of the charging air flow conveying main pipe 201, the closing or opening of a valve body second output port 218 on the compressed air switch valve 215 can be realized by controlling the normally closed contact 222, a valve body input port 216, a valve body first output port 217 and the valve body second output port 218 are arranged on the compressed air switch valve 215 respectively; when the normally closed contact 222 is not touched, the valve body second output port 218 is in a closed state, at this time, compressed air entering the compressed air switch valve 215 is output from the valve body first output port 217; when the normally closed contact 222 is touched, the valve body second output port 218 is in an open state, and compressed air entering the compressed air switch valve 215 is output from the valve body first output port 217 and the valve body second output port 218 respectively; the compressed air access pipe 210 is connected with the valve body input port 216, a compressed air second conveying pipe 220 is connected between the valve body second output port 218 and the compressed air second inlet 207, and a compressed air first conveying pipe 219 is connected between the valve body first output port 217 and the compressed air first inlet 208; a one-way flap valve 221 is arranged at a connection position of the feeding port cylinder 204 and the rear conical cavity 202, and the one-way flap valve 221 can only be turned up to the inside of the rear conical cavity 202.When the normally closed contact 222 is not touched, the second output port 218 of the valve body is in a closed state, after the compressed air enters the front conical cavity 203 through the compressed air first delivery pipe 219 and the compressed air first inlet port 208, a part of the compressed air enters the rear conical cavity 202 along the charging gas flow delivery main pipe 201, forms the pressure on the one-way flap valve 221, reliably seals the connection between the feed port cylinder 204 and the rear conical cavity 202, and the other part of the compressed air is discharged from the right port of the conveying hose 206 along the discharge port cylinder 205 and the conveying hose 206.

[0021] The pressure-adjustable pressure reducing valve 211 is connected in series on the compressed air access pipe 210, the compressed air delivery pipe 214 is connected between the pressure reducing outlet 213 of the pressure reducing valve 211 and the valve body inlet 216, and the pressure adjusting knob is arranged on the pressure reducing valve 211, so as to realize the adjustment of the compressed air pressure by rotating the pressure adjusting knob.

[0022] The normally closed contact control air pipe 223 is connected between the compressed air access pipe 210 and the normally closed contact control port of the compressed air switch valve 215, and the compressed air in the compressed air access pipe 210 enters the compressed air switch valve 215 through the normally closed contact control air pipe 223, and the normally closed contact 222 is in a normally closed state by air pressure; the normally closed contact 222 of the compressed air switch valve 215 is pressed by air pressure to realize the normally closed state, and only under the pressure of external force, the constant pressure overcomes the air pressure, so as to realize the opening of the second output port 218 of the valve body.

[0023] A kind of emulsion explosive detonating charge of pneumatic charging method of pneumatic charging machine, specifically relates to the charging operation process of filling into blast hole in detonating charge 101, mechanical hand holds the medicine taking pipe 401 connected on the front end port of conveying hose 206, mechanical hand operates medicine taking pipe 401 to take out detonating charge 101 from detonating charge warehouse, and medicine taking pipe 401 is moved to blast hole, when setting up detonating charge 101 in medicine taking pipe 401, compressed air enters front conical cavity 203, charging gas flow delivery main pipe 201 and rear conical cavity 202 in communication with each other in sequence through compressed air access pipe 210, pressure reducing valve 211, valve body inlet 216, compressed air switch valve 215, valve body first output port 217, compressed air first delivery pipe 219 and compressed air first inlet port 208, at this time, one-way flap valve 221 seals the connection between feed port cylinder 204 and rear conical cavity 202, and the pressurized compressed air ejects detonating charge 101 in medicine taking pipe 401 forward, so that detonating charge 101 enters blast hole, thereby completing the charging of detonating charge 101.

[0024] The application relates to a kind of pneumatic charging methods of emulsion explosive detonating cartridge of pneumatic charging machine, specifically to the operation of filling explosive cartridge into blast hole, mechanical hand holds medicine taking tube 401 is connected on the front end port of conveying hose 206, when medicine taking tube 401 is in idle state, that is, after filling detonating cartridge into blast hole, start filling explosive cartridge into hole operation, explosive cartridge 301 is conveyed into inlet cylinder 204 by conveying mechanism of explosive cartridge, explosive cartridge 301 is opened one-way flap valve 221 under the action of inertia and enters into charging air flow conveying main pipe 201, one-way flap valve 221 resets, and inlet cylinder 204 and rear conical cavity 202 connection is closed again, at this time, explosive cartridge 301 will normally closed contact 222 be up and contact trigger, valve body second output port 218 is opened, at this time, compressed air in compressed air switch valve 215 enters into rear conical cavity 202 through compressed air second conveying pipe 220, and deduces explosive cartridge 301 to move right, while, compressed air in compressed air switch valve 215 enters into front conical cavity 203 through compressed air first conveying pipe 219, the compressed air is ejected along outlet cylinder 205, conveying hose 206 and medicine taking tube 401 to right, thereby forming suction effect to left explosive cartridge 301, under the action of two compressed air, explosive cartridge 301 accelerates through outlet cylinder 205, conveying hose 206 and medicine taking tube 401 and enters into blast hole, thereby completing explosive cartridge 301 charging.

Claims

1. A kind of emulsion explosive roll's air-powered charger structure, comprising air-powered machine support (209), be provided with charging airflow delivery main pipe (201) on air-powered machine support (209), be provided with compressed air access pipe (210) on the air-powered machine support (209) outside charging airflow delivery main pipe (201), be communicated with rear conical cavity (202) on the left end port of charging airflow delivery main pipe (201), be communicated with inlet port cylinder (204) on the left end port of rear conical cavity (202), be communicated with front conical cavity (203) on the right end port of charging airflow delivery main pipe (201), be communicated with outlet port cylinder (205) on the right end port of front conical cavity (203), be connected with conveying hose (206) on the right end port of outlet port cylinder (205), it is characterized in that, The first compressed air inlet (208) is arranged on the cavity wall of the front conical cavity (203), the second compressed air inlet (207) is arranged on the cavity wall of the rear conical cavity (202), the compressed air switch valve (215) is connected to the outer side wall of the charge airflow delivery main pipe (201), the normally closed contact (222) on the compressed air switch valve (215) is arranged in the pipe cavity of the charge airflow delivery main pipe (201) after penetrating the outer side wall of the charge airflow delivery main pipe (201), the valve body input port (216), the valve body first output port (217) and the valve body second output port (218) are arranged on the compressed air switch valve (215) respectively; when the normally closed contact (222) is not touched, the valve body second output port (218) is in a closed state, at this time, the compressed air entering the compressed air switch valve (215) is output from the valve body first output port (217); when the normally closed contact (222) is touched, the valve body second output port (218) is in an open state, the compressed air entering the compressed air switch valve (215) is output from the valve body first output port (217) and the valve body second output port (218) respectively; the compressed air access pipe (210) is connected to the valve body input port (216), the second compressed air delivery pipe (220) is connected between the valve body second output port (218) and the second compressed air inlet (207), and the first compressed air delivery pipe (219) is connected between the valve body first output port (217) and the first compressed air inlet (208); the one-way flap valve (221) is arranged at the connection between the feed port cylinder (204) and the rear conical cavity (202), and the one-way flap valve (221) can only be flipped to the inside of the rear conical cavity (202).

2. The air-powered charging machine structure of the emulsion explosive roll according to claim 1, characterized in that, The pressure-adjustable pressure reducing valve (211) is connected in series on the compressed air access pipe (210), and the reduced pressure compressed air delivery pipe (214) is connected between the pressure reducing output port (213) of the pressure reducing valve (211) and the valve body input port (216).

3. The air-powered charging machine structure of the emulsion explosive roll according to claim 1 or 2, characterized in that, The normally closed contact control air pipe (223) is connected between the compressed air access pipe (210) and the normally closed contact control port of the compressed air switch valve (215), and the compressed air in the compressed air access pipe (210) enters the compressed air switch valve (215) through the normally closed contact control air pipe (223), and the compressed air is in a normally closed state by air pressure.

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