CN217844937U

CN217844937U - Anti-vibration and anti-impact electronic detonator

Info

Publication number: CN217844937U
Application number: CN202221210783.2U
Authority: CN
Inventors: 刘庆; 周桂松; 郝亚飞; 冷振东; 陈文基; 李宏兵; 张程娇
Original assignee: China Gezhouba Group Yipuli Co ltd
Current assignee: China Gezhouba Group Yipuli Co ltd
Priority date: 2022-05-20
Filing date: 2022-05-20
Publication date: 2022-11-18
Anticipated expiration: 2032-05-20

Abstract

The utility model discloses an anti-vibration and anti-impact electronic detonator, which comprises an electronic ignition element and a basic detonator; the electronic ignition element consists of a pin wire, a chip module and an ignition structure; the two core wires of the pin wire are respectively connected to two input electrodes of the chip module, and the ignition structure is electrically connected to the output end of the chip module in an SMT (surface mount technology) mode; the input electrode of the chip module is fixedly connected with the core wire of the leg wire in a riveting and welding combined connection mode; and a vibration reduction type protective sleeve is formed on the periphery of the ignition structure. The beneficial effects of the utility model are that, the electron detonator has good anti vibration shock resistance characteristic, is being arranged in small section blasting such as tunnel, hard rock, ground mining tunnelling, can effectively reduce the misfire rate.

Description

Anti-vibration and anti-impact electronic detonator

Technical Field

The utility model relates to an electron detonator structure, especially a type electron detonator that shocks resistance of anti vibration.

Background

With the continuous development and maturity of the electronic detonator technology, the superiority of the electronic detonator is more and more widely accepted. With the rapid popularization and application of the electronic detonator, the blasting environment is more and more complex, and the applicability and reliability of the electronic detonator product become the most core competitive weapon in the market. At present, the design and production of the electronic detonator are basically carried out according to the industry standard, and from the actual application condition, the product produced according to the standard can better meet the application in the domestic common open blasting. However, in small-section blasting such as tunnel, hard rock, underground mining and tunneling, under the action of strong vibration and impact, the electronic detonator has high explosion rejection rate, and the application of the electronic detonator in the environment is seriously influenced. Therefore, the vibration and impact resistance of the electronic detonator is an important index for the application to the aforementioned environments. But at present, no anti-vibration and anti-impact electronic detonator which is suitable for small-section blasting of tunnels is available. For this reason, further improvements to existing electronic detonators are needed.

Disclosure of Invention

The utility model aims at providing a to the unsatisfactory not enough of present electronic detonator rejection rate in the small-section blasting, provide a vibration resistance type electronic detonator that shocks resistance, it passes through riveting and welded built-up connection mode fixed connection through the heart yearn with the input electrode of chip module and foot line, it is more firm to make the two connect, set up damping type lag in the ignition structure periphery simultaneously, in order to form the protection to the ignition structure, prevent that the electric connection point between ignition structure and the chip module is not hard up, thereby the reliability of electricity connection has been strengthened at two weak points of connection, in order to effectively reduce the rejection rate.

In order to achieve the above purpose, the utility model adopts the following technical scheme.

An anti-vibration and anti-impact electronic detonator comprises an electronic ignition element and a basic detonator; the electronic ignition element consists of a pin wire, a chip module and an ignition structure; the two strands of core wires of the leg wire are respectively connected to two input electrodes of the chip module, and the ignition structure is electrically connected to the output end of the chip module in an SMT (surface mount technology) mode; the input electrode of the chip module is fixedly connected with the core wire of the leg wire in a riveting and welding combined connection mode; and a vibration reduction type protective sleeve is formed on the periphery of the ignition structure.

Adopt the electronic detonator of aforementioned scheme, through the heart yearn with the input electrode of chip module and leg wire through riveting and welded built-up connection mode fixed connection, make the two connect more firmly, set up damping type lag in ignition structure periphery simultaneously, in order to form the protection to ignition structure, and absorb shock vibration by the lag, reduce impact energy and transmit to ignition structure on, prevent that the electric connection point between ignition structure and the chip module is not hard up, or reduce not hard up influence factor, thereby the reliability of electric connection has been strengthened at two weak points of connection, in order to effectively reduce the rate of refusing to explode.

Preferably, the chip module is encapsulated by injection molding; the vibration reduction type protecting sleeve is composed of a heat shrink tube or a silica gel sleeve; or, the plastic package is formed through glue injection. The chip module can enhance the shock resistance of the chip module through injection molding and packaging, and the vibration reduction type protective sleeve is formed by a heat shrink tube or a silica gel sleeve or formed through glue injection and plastic packaging, so that the requirements of vibration reduction and vibration absorption can be fully met. The protective sleeve only surrounds the periphery of the ignition structure, and an ignition hole is formed at the free end of the ignition structure.

Preferably, the basic detonator comprises a steel shell, and the steel shell is subjected to bluing or copper plating treatment; and a conductive spring piece is arranged between the packaging layer formed by the chip module through injection molding and packaging and the steel tube shell. The steel tube shell is communicated with the packaging layer of the chip module through the conductive spring piece, static electricity on the chip module is eliminated, and therefore the anti-electromagnetic interference capacity is improved. The corrosion resistance of the steel pipe shell can be improved by surface treatment such as bluing or copper plating, and the storage time can be prolonged.

Preferably, the ignition structure is composed of a patch type bridge wire, a patch type resistor, a patch type energetic material or a semiconductor bridge, and is connected with the output end of the chip module in an SMT mode. The ignition structure with different forms is adopted, so that the convenience of purchasing related accessories in detonator production is realized, and the production cost is reduced. Wherein, the patch type bridge wire and the patch type resistor are required to be stained with explosive to form a explosive head; the patch type energetic material and the semiconductor bridge do not need to be stained with medicine; the patch type energetic material can excite the built-in chemical energy to form flame or flame after certain electric energy is conducted, and the semiconductor bridge can form sparks after the electric energy is conducted, so that the purpose of detonating the explosive can be achieved.

Preferably, the input electrode has an extension extending toward the core wire, the extension being preformed with a groove receiving the core wire. When the core wire is connected with the electrode, firstly, the free end of the core wire is placed in the groove of the extension part; then, the flanks at two sides of the groove are extruded by external force to be rolled inwards, the core wire is wrapped after plastic deformation, so that the two are riveted together, and the core wire is welded on the electrode by welding modes such as soldering and the like.

The beneficial effects of the utility model are that, have good anti vibration shock resistance characteristic, in being arranged in small section blasting such as tunnel, hard rock, ground mining tunnelling, can effectively reduce the explosion rejection rate.

Drawings

Fig. 1 is a schematic structural diagram of the middle electronic detonator of the present invention.

Fig. 2 is a schematic view of a part of the structure of the electronic detonator of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings, which are not intended to limit the scope of the embodiments described herein.

Referring to fig. 1 and 2, the anti-vibration and anti-impact electronic detonator comprises an electronic ignition element and a base detonator 1; the electronic ignition element consists of a pin wire 2, a chip module 3 and an ignition structure 4; two strands of core wires 2a of the leg wires 2 are respectively connected to two input electrodes 5 of the chip module 3, and the ignition structure 4 is connected to the output end of the chip module 3 in an SMT (surface mount technology) manner; the input electrode 5 of the chip module 3 is fixedly connected with the core wire 2a of the leg wire 2 in a riveting and welding combined connection mode; and a vibration reduction type protective sleeve 6 is formed on the periphery of the ignition structure 4.

Wherein, one end of the leg wire 2 is provided with an injection molding plug, and the leg wire 2 is tightly matched and fixed on the basic detonator 1 through the injection molding plug and the pipe hole at the free end of the pipe shell of the basic detonator 1; the other end of the leg wire 2 is provided with a line card 7 for networking. The lead of the leg wire 2 is a double-strand composite lead, the core wire is formed by drawing a tinned copper-clad steel core wire, a layer of inner-layer insulating material is wrapped on a single core wire, and the two core wires are compounded into a whole through an outer-layer insulating material.

The basic detonator 1 comprises a steel shell, the steel shell is blued or plated with copper, and the chip module 3 is encapsulated by injection molding; and a conductive spring piece is arranged between the packaging layer of the chip module 3 and the steel tube shell so as to eliminate static electricity through the conductive spring piece and improve the anti-electromagnetic interference capability. The vibration reduction type protecting sleeve 6 is made of a heat shrinkable tube, and an ignition hole is formed at the free end of the ignition structure 4. The ignition structure 4 is composed of a patch type bridge wire and a patch type resistor and is connected with the output end of the chip module 3 in an SMT mode; the damping type protecting jacket 6 is covered after the ignition structure 4 is dipped with the medicine.

In this embodiment, the ignition structure 4 may also be formed by a patch type energetic material or a semiconductor bridge, so as to replace a scheme in which a patch type bridge wire or a patch type resistor forms the ignition structure 4, and in the case of using the patch type energetic material or the semiconductor bridge, the ignition structure 4 does not need to be stained with a chemical.

In this embodiment, the vibration damping type protecting sleeve 6 may also be formed by a silica gel sleeve; or, the plastic injection molding is carried out.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by logical analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention by those skilled in the art should be within the scope of protection defined by the claims.

Claims

1. An anti-vibration and anti-impact electronic detonator comprises an electronic ignition element and a base detonator (1); the electronic ignition element consists of a pin wire (2), a chip module (3) and an ignition structure (4); two strands of core wires (2 a) of the leg wires (2) are respectively connected to two input electrodes (5) of the chip module (3), and the ignition structure (4) is electrically connected to the output end of the chip module (3) in an SMT (surface mount technology) mode; the input electrode (5) of the chip module (3) is fixedly connected with the core wire (2 a) of the leg wire (2) in a riveting and welding combined connection mode; and a vibration reduction type protective sleeve (6) is formed on the periphery of the ignition structure (4).

2. The anti-vibration and anti-impact electronic detonator according to claim 1, wherein the chip module (3) is encapsulated by injection molding; the vibration reduction type protective sleeve (6) is composed of a heat shrink tube or a silica gel sleeve; or, the plastic injection molding is carried out.

3. The anti-vibration and impact-resistant electronic detonator according to claim 2, wherein the base detonator (1) comprises a steel shell, the steel shell being blued or plated with copper; and a conductive spring piece is arranged between the packaging layer formed by the injection molding and packaging of the chip module (3) and the steel tube shell.

4. The electronic detonator of any one of claims 1 to 3 being of the vibration and impact resistant type, wherein the ignition structure (4) is constituted by a patch type bridge wire, a patch type resistor, a patch type energetic material or a semiconductor bridge and is connected with the output end of the chip module (3) by SMT means.

5. Anti-vibration and impact-resistant electronic detonator according to any of claims 1 to 3, wherein the input electrode (5) has an extended portion (5 a) extending towards the core wire (2 a) the extended portion (5 a) being pre-formed with a groove receiving the core wire (2 a).