阅读说明：本技术 一种高分子防腐复合型桥架用自扑灭着火点的辅助设备 (Auxiliary equipment for self-extinguishing fire point for high-polymer anti-corrosion composite bridge ) 是由 柯有玺 柯正涛 柯正伟 于 2021-07-30 设计创作，主要内容包括：本发明公开了一种高分子防腐复合型桥架用自扑灭着火点的辅助设备,包括防护壳体,所述防护壳体下端卡接有支撑桥架,防护壳体两侧均贯通连接有调位电机,所述两个所述调位电机之间均固定有转动螺杆,转动螺杆外部通过螺纹连接有传动座,所述传动座下端固定有连接座,连接座下端设置有灭火机构,灭火机构两侧均设置有警报机构,所述警报机构内部设置有定位机构,警报机构与灭火机构之间设置有安装座。本发明通过温度传感器分析出着火点,调位电机启动带动转动螺杆转动,转动螺杆转动带动传动座滑动,传动座滑动带动连接座运动,连接座带动灭火机构运动,在高温下灭火机构、警报机构、定位机构开始运行扑灭火的同时进行报警。(The invention discloses auxiliary equipment for self-extinguishing fire points for a high-polymer anti-corrosion composite type bridge, which comprises a protective shell, wherein a supporting bridge is clamped at the lower end of the protective shell, positioning motors are connected to two sides of the protective shell in a penetrating manner, a rotating screw is fixed between the two positioning motors, a transmission seat is connected to the outside of the rotating screw through threads, a connecting seat is fixed at the lower end of the transmission seat, a fire extinguishing mechanism is arranged at the lower end of the connecting seat, alarm mechanisms are arranged on two sides of the fire extinguishing mechanism, a positioning mechanism is arranged in each alarm mechanism, and a mounting seat is arranged between each alarm mechanism and the fire extinguishing mechanism. According to the fire extinguishing device, the ignition point is analyzed through the temperature sensor, the positioning motor is started to drive the rotating screw to rotate, the rotating screw rotates to drive the transmission seat to slide, the transmission seat slides to drive the connecting seat to move, the connecting seat drives the fire extinguishing mechanism to move, and the fire extinguishing mechanism, the alarm mechanism and the positioning mechanism start to operate at high temperature and extinguish fire and simultaneously give an alarm.)

1. The utility model provides an anticorrosive compound crane span structure of polymer is with auxiliary assembly from putting out fire spot, includes protective housing (1), its characterized in that: the fire extinguishing device is characterized in that a supporting bridge frame (2) is clamped at the lower end of a protective shell (1), positioning motors (3) are connected to two sides of the protective shell (1) in a penetrating manner, a rotating screw (4) is fixed between the two positioning motors (3), a transmission seat (5) is connected to the outer portion of the rotating screw (4) through threads, a connecting seat (6) is fixed at the lower end of the transmission seat (5), a fire extinguishing mechanism (7) is arranged at the lower end of the connecting seat (6), alarm mechanisms (8) are arranged on two sides of the fire extinguishing mechanism (7), a positioning mechanism (9) is arranged in each alarm mechanism (8), a mounting seat (10) is arranged between each alarm mechanism (8) and the fire extinguishing mechanism (7), a heat conducting wire (11) is fixed in each mounting seat (10), a heat conducting block (12) is fixed at the lower end of each mounting seat (10), and an alarm frame (13) is arranged at the lower end of each fire extinguishing mechanism (7), the rear end of the alarm frame (13) is fixedly connected with the inner wall of the protective shell (1), and a temperature sensor (14) is fixed in the alarm frame (13);

the fire extinguishing mechanism (7) comprises a fire extinguishing shell (701), the fire extinguishing shell (701) is in through connection with an installation seat (10), the upper end of the fire extinguishing shell (701) is fixedly connected with a connecting seat (6), a buffer rod (702) is arranged inside the fire extinguishing shell (701), a buffer spring (703) is fixed outside the buffer rod (702), the buffer spring (703) is fixedly connected with the inner wall of the fire extinguishing shell (701), a sliding plug (704) is fixed at one end, close to the center of the fire extinguishing shell (701), of the buffer spring (703), the sliding plug (704) is in sliding connection with the fire extinguishing shell (701), an air storage bag (705) is arranged on one side, away from the buffer rod (702), of the sliding plug (704), a pressure valve (706) is fixed at the lower end of the air storage bag (705), and the pressure valve (706) is in through connection with the fire extinguishing shell (701);

the alarm mechanism (8) comprises an alarm shell (801), the alarm shell (801) is in through connection with the mounting seat (10), a transmission plug (802) is connected to the inside of the alarm shell (801) in a sliding mode, a reset spring (803) is fixed to one end, close to the mounting seat (10), of the transmission plug (802), the reset spring (803) is fixedly connected with the inner wall of the alarm shell (801), a transmission rod (804) is fixed to one side, far away from the reset spring (803), of the transmission plug (802), an alarm contact (805) is fixed to one end, far away from the transmission plug (802), of the transmission rod (804), a limiting ring (806) is connected to the outside of the alarm contact (805) in a sliding mode, the limiting ring (806) is fixedly connected with the inner wall of the alarm shell (801), and a power-on contact (807) is fixed to one end, far away from the alarm contact (805), of the limiting ring (806).

2. The auxiliary equipment for self-extinguishing fire point of the high-molecular anti-corrosion composite bridge frame as claimed in claim 1, is characterized in that: the positioning mechanism (9) comprises a push-pull rod (901), one end of the push-pull rod (901) is rotatably connected with the transmission plug (802), one end of the push-pull rod (901) far away from the transmission plug (802) is rotatably connected with a rotating wheel (903), the front end of the rotating wheel (903) is rotatably connected with a fixed rod (902), the front end of the fixed rod (902) is fixedly connected with the alarm shell (801), an extension rod (904) is fixed outside the rotating wheel (903), a hammer head (905) is fixed outside the extension rod (904), a vibrating ball (906) is arranged on one side of the rotating wheel (903) far away from the transmission plug (802), a vibrating spring (907) is fixed on one side of the vibrating ball (906) far away from the rotating wheel (903), the vibration spring (907) is fixedly connected with the alarm shell (801), an echo ring (908) is fixed outside the vibration spring (907), and the echo ring (908) is fixedly connected with the alarm shell (801).

3. The auxiliary equipment for self-extinguishing fire point of the high-molecular anti-corrosion composite bridge frame as claimed in claim 2, wherein: the extension rods (904) are four in number and distributed outside the rotating wheel (903) in an array.

4. The auxiliary equipment for self-extinguishing fire point of the high-molecular anti-corrosion composite bridge frame as claimed in claim 2, wherein: the distance from the flutter ball (906) to the circle center of the rotating wheel (903) is smaller than the distance from the hammer head (905) to the circle center of the rotating wheel (903).

5. The auxiliary equipment for self-extinguishing fire point of the high-molecular anti-corrosion composite bridge frame as claimed in claim 2, wherein: the flutter ball (906) and the echo ring (908) are made of metal materials.

6. The auxiliary equipment for self-extinguishing fire point of the high-molecular anti-corrosion composite bridge frame as claimed in claim 1, is characterized in that: the sliding plugs (704) are two in number and are symmetrically distributed on two sides of the air storage bag (705).

7. The auxiliary equipment for self-extinguishing fire point of the high-molecular anti-corrosion composite bridge frame as claimed in claim 1, is characterized in that: the sliding plug (704) has a diameter equal to the diameter of the inner wall of the fire extinguishing housing (701).

8. The auxiliary equipment for self-extinguishing fire point of the high-molecular anti-corrosion composite bridge frame as claimed in claim 1, is characterized in that: the fire extinguishing shell (701) and the alarm shell (801) are made of materials with high heat insulation and high ignition point.

9. The auxiliary equipment for self-extinguishing fire point of the high-molecular anti-corrosion composite bridge frame as claimed in claim 1, is characterized in that: the gas stored in the gas storage bag (705) is carbon dioxide.

Technical Field

The invention relates to the technical field of cable bridges, in particular to auxiliary equipment for self-extinguishing ignition points for a high-polymer anti-corrosion composite type bridge.

Background

The cable bridge mainly functions in supporting and protecting cables, so that the cables cannot be directly exposed outside, meanwhile, the bridge is convenient for managing the cables, the field cleanliness is improved, the cable bridge is exposed outside, the requirement on the corrosion resistance of the cable bridge is high, people have developed the high-polymer corrosion-resistant composite cable bridge, but the cables are placed in the bridge to cause the cables to be in a relatively closed space, and in the cable operation process, once a short circuit phenomenon occurs, a fire disaster is very easily caused.

The existing high-molecular anti-corrosion composite cable bridge is mainly made of fireproof materials for protecting a cable from fire, the fire spreading cannot be effectively restrained by the aid of the protection mode, the cable cannot be extinguished or an alarm is sent out to remind manual treatment in the first time of fire, so that the best time for extinguishing a fire source is missed, and finally, a fire disaster is caused, and property loss is caused.

Therefore, in view of the above, research and improvement are made for the existing structure and defects, and an auxiliary device for self-extinguishing of an ignition point for a polymer anticorrosion composite bridge frame is provided, so as to achieve the purpose of higher practical value.

Disclosure of Invention

Technical problem to be solved

The invention aims to solve the defects that a cable bridge cannot alarm and extinguish in time when a cable catches fire in the prior art, and provides auxiliary equipment for automatically extinguishing fire points for a high-molecular anti-corrosion composite bridge.

(II) technical scheme

In order to achieve the purpose, the invention adopts the following technical scheme:

a high-molecular anticorrosion composite bridge frame is used as an auxiliary device for self-extinguishing fire points, and comprises a protective shell, wherein a supporting bridge frame is clamped at the lower end of the protective shell, positioning motors are connected on two sides of the protective shell in a penetrating manner, a rotating screw rod is fixed between the two positioning motors, a transmission seat is connected to the outside of the rotating screw rod through threads, a connecting seat is fixed at the lower end of the transmission seat, a fire extinguishing mechanism is arranged at the lower end of the connecting seat, alarm mechanisms are arranged on two sides of the fire extinguishing mechanism, a positioning mechanism is arranged inside the alarm mechanism, a mounting seat is arranged between the alarm mechanism and the fire extinguishing mechanism, a heat conducting wire is fixed inside the mounting seat, a heat conducting block is fixed at the lower end of the mounting seat, an alarm frame is arranged at the lower end of the fire extinguishing mechanism, the rear end of the alarm frame is fixedly connected with the inner wall of the protective shell, a temperature sensor is fixed inside the alarm frame, and the fire extinguishing mechanism comprises a fire extinguishing shell, the fire extinguishing shell is communicated with the mounting seat, the upper end of the fire extinguishing shell is fixedly connected with the connecting seat, a buffer rod is arranged in the fire extinguishing shell, a buffer spring is fixed outside the buffer rod and fixedly connected with the inner wall of the fire extinguishing shell, a sliding plug is fixed at one end, close to the center of the fire extinguishing shell, of the buffer spring and is slidably connected with the fire extinguishing shell, an air storage bag is arranged at one side, away from the buffer rod, of the sliding plug, a pressure valve is fixed at the lower end of the air storage bag and is communicated with the fire extinguishing shell, the alarm mechanism comprises an alarm shell, the alarm shell is communicated with the mounting seat, a transmission plug is slidably connected in the alarm shell, a reset spring is fixed at one end, close to the mounting seat, of the transmission plug, the reset spring is fixedly connected with the inner wall of the alarm shell, and a transmission rod is fixed at one side, away from the reset spring, of the transmission plug, the one end that the transfer line kept away from the transmission stopper is fixed with the alarm contact, and alarm contact outside sliding connection has the spacing ring, spacing ring and alarm housing inner wall fixed connection, the one end that the spacing ring kept away from the alarm contact is fixed with the circular telegram contact.

Preferably, the positioning mechanism comprises a push-pull rod, one end of the push-pull rod is connected with the transmission plug in a rotating mode, one end, far away from the transmission plug, of the push-pull rod is connected with a rotating wheel in a rotating mode, the front end of the rotating wheel is connected with a fixed rod in a rotating mode, the front end of the fixed rod is fixedly connected with the alarm shell, an extension rod is fixed outside the rotating wheel, a hammer head is fixed outside the extension rod, a vibrating ball is arranged on one side, far away from the transmission plug, of the rotating wheel, a vibrating spring is fixed on one side, far away from the rotating wheel, of the vibrating spring is fixedly connected with the alarm shell, an echo ring is fixed outside the vibrating spring, and the echo ring is fixedly connected with the alarm shell.

Preferably, the extension rods are four in number and are distributed on the outer part of the rotating wheel in an array.

Preferably, the distance from the flutter ball to the circle center of the rotating wheel is smaller than the distance from the hammer head to the circle center of the rotating wheel.

Preferably, the flutter ball and the echo ring are made of metal materials.

Preferably, the sliding plugs are two in number and are symmetrically distributed on two sides of the air storage bag.

Preferably, the sliding plug has a diameter equal to the diameter of the inner wall of the fire extinguishing casing.

Preferably, the fire extinguishing shell and the alarm shell are made of materials with high heat insulation and high ignition point.

Preferably, the gas stored in the gas storage bag is carbon dioxide.

(III) advantageous effects

Compared with the prior art, the embodiment of the invention provides auxiliary equipment for self-extinguishing fire points for a high-polymer anti-corrosion composite bridge frame, which has the following beneficial effects:

1. according to the fire extinguishing device, a temperature sensor is used for analyzing an ignition point, the positioning motor is started to drive the rotating screw to rotate, the rotating screw rotates to drive the transmission seat to slide, the transmission seat slides to drive the connecting seat to move, the connecting seat drives the fire extinguishing mechanism to move, and the fire extinguishing mechanism, the alarm mechanism and the positioning mechanism start to operate at high temperature and extinguish fire and simultaneously give an alarm;

2. according to the invention, high temperature of flame is conducted into the heat conducting wires, so that the temperature rise pressure intensity of one side of the sliding plug, which is far away from the center of the fire extinguishing shell, is increased, the buffer rod is driven to stretch the buffer spring and move backwards, the gas storage bag is extruded, the internal pressure intensity of the gas storage bag is increased after the gas storage bag is extruded, carbon dioxide stored in the gas storage bag can be sprayed out through the pressure valve, and the effect of automatically extinguishing the cable when the cable is on fire is achieved;

3. according to the invention, the temperature rise pressure intensity of one side of the transmission plug, which is far away from the center of the alarm shell, is increased through the temperature rise of the heat conduction wire, so that the transmission plug is pushed to stretch the reset spring and then slide, the transmission plug moves to drive the transmission rod to move, the transmission rod moves to push the alarm contact to slide in the limiting ring until the alarm contact is contacted with the electrified contact, and thus the effect of automatic alarm after the cable is ignited is achieved;

4. according to the invention, the push-pull rod is driven to move at the same time in the sliding process of the transmission plug, the push-pull rod moves to drive the rotating wheel to rotate, the rotating wheel rotates to drive the hammer head to rotate, the hammer head rotates to knock the flutter ball, and the flutter ball can knock the echo ring in a reciprocating manner after being knocked, so that crisp sound is generated, and the effect of automatically sending knocking sound to help to position the ignition point after the cable is ignited is achieved.

Drawings

FIG. 1 is a cross-sectional view of a fire suppression housing of the present invention;

FIG. 2 is a schematic major face of the present invention;

FIG. 3 is a schematic view of the fire extinguishing mechanism according to the present invention;

FIG. 4 is a schematic view of the alarm mechanism of the present invention;

FIG. 5 is an enlarged view of the position A in FIG. 1 according to the present invention.

In the figure: 1. a protective housing; 2. supporting the bridge; 3. a positioning motor; 4. rotating the screw; 5. a transmission seat; 6. a connecting seat; 7. a fire extinguishing mechanism; 8. an alarm mechanism; 9. a positioning mechanism; 10. a mounting seat; 11. heat conducting wires; 12. a heat conducting block; 13. an alarm frame; 14. a temperature sensor; 701. a fire extinguishing housing; 702. a buffer rod; 703. a buffer spring; 704. a sliding plug; 705. a gas storage bag; 706. a pressure valve; 801. an alarm housing; 802. a drive plug; 803. a return spring; 804. a transmission rod; 805. an alarm contact; 806. a limiting ring; 807. a power-on contact; 901. a push-pull rod; 902. fixing the rod; 903. a rotating wheel; 904. an extension pole; 905. a hammer head; 906. a flutter ball; 907. vibrating the spring; 908. an echo ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Example one

Referring to fig. 1-3, an auxiliary device for self-extinguishing fire point for a polymer anticorrosion composite bridge comprises a protective shell 1, a supporting bridge 2 is clamped at the lower end of the protective shell 1, positioning motors 3 are connected with both sides of the protective shell 1 in a penetrating manner, a rotating screw 4 is fixed between the two positioning motors 3, a transmission seat 5 is connected with the outside of the rotating screw 4 through threads, a connecting seat 6 is fixed at the lower end of the transmission seat 5, a fire extinguishing mechanism 7 is arranged at the lower end of the connecting seat 6, alarm mechanisms 8 are arranged at both sides of the fire extinguishing mechanism 7, a positioning mechanism 9 is arranged inside the alarm mechanism 8, a mounting seat 10 is arranged between the alarm mechanism 8 and the fire extinguishing mechanism 7, a heat conducting wire 11 is fixed inside the mounting seat 10, a heat conducting block 12 is fixed at the lower end of the mounting seat 10, an alarm frame 13 is arranged at the lower end of the fire extinguishing mechanism 7, and the rear end of the alarm frame 13 is fixedly connected with the inner wall of the protective shell 1, a temperature sensor 14 is fixed inside the alarm frame 13.

Put into support crane span structure 2 with the cable when using in, and with 1 joint of protective housing on supporting crane span structure 2, when the phenomenon of catching fire appears in the cable, temperature sensor 14 can tell the ignition point by assay, at this moment positioning motor 3 starts to drive and rotates screw rod 4 and rotate, thereby it slides to rotate screw rod 4 and drive transmission seat 5, transmission seat 5 slides and drives connecting seat 6 motion, connecting seat 6 drives the motion of mechanism 7 of putting out a fire, central point and the central point of the ignition point are on same vertical line until the mechanism 7 of putting out a fire 7, the mechanism 7 of putting out a fire under high temperature this moment, alarm mechanism 8, positioning mechanism 9 begins to operate and puts out an alarm when putting out a fire.

The fire extinguishing mechanism 7 comprises a fire extinguishing housing 701, the fire extinguishing housing 701 is in through connection with an installation seat 10, the upper end of the fire extinguishing housing 701 is fixedly connected with a connecting seat 6, a buffer rod 702 is arranged inside the fire extinguishing housing 701, a buffer spring 703 is fixed outside the buffer rod 702, the buffer spring 703 is fixedly connected with the inner wall of the fire extinguishing housing 701, one end, close to the center of the fire extinguishing housing 701, of the buffer spring 703 is fixed with a sliding plug 704, the sliding plugs 704 are two in number and are symmetrically distributed on two sides of a gas storage bag 705, the diameter of the sliding plug 704 is equal to that of the inner wall of the fire extinguishing housing 701, the sliding plug 704 is in sliding connection with the fire extinguishing housing 701, one side, away from the buffer rod 702, of the sliding plug 704 is provided with the gas storage bag 705, gas stored inside the gas storage bag 705 is carbon dioxide, the lower end of the gas storage bag 705 is fixed with a pressure valve 706, and the pressure valve 706 is in through connection with the fire extinguishing housing 701.

In this embodiment, when a cable is on fire, the temperature sensor 14 will first sense the position of the fire point, then the power of the positioning motor 3 is turned on to drive the rotating screw 4 to rotate, the rotating screw 4 rotates to drive the transmission seat 5 to slide, the transmission seat 5 slides to drive the connection seat 6 to slide, the connection seat 6 slides to drive the fire extinguishing mechanism 7 to move, when the center point of the fire extinguishing mechanism 7 to which the fire extinguishing mechanism 7 moves and the center point of the fire point are on the same vertical line, the positioning motor 3 does not move any more, at this time, the high temperature of the flame is conducted into the heat conducting wire 11 through the heat conducting block 12, so that the temperature of the heat conducting wire 11 rises, the temperature of the side of the sliding plug 704 away from the center of the fire extinguishing housing 701 rises due to the temperature rise of the heat conducting wire 11, so that the pressure increases, the increased pressure can exert a thrust on the sliding plug 704, and the thrust can drive the buffer rod 702 to stretch the buffer spring 703 to deform and then move, at this time, the two sliding plugs 704 move relatively to extrude the gas storage bag 705, the internal pressure of the gas storage bag 705 is increased after the gas storage bag 705 is extruded, carbon dioxide stored in the gas storage bag is sprayed out through the pressure valve 706, the sprayed carbon dioxide is quickly distributed around a fire point, oxygen around the fire point is dispersed, and therefore combustion cannot be continued, and the effect of automatically extinguishing the cable when the cable catches fire is achieved.

Example two

Referring to fig. 1, 2 and 4, the present embodiment is substantially the same as the first embodiment, and more preferably, the alarm mechanism 8 includes an alarm housing 801, the fire extinguishing housing 701 and the alarm housing 801 are made of materials with high thermal insulation and high ignition point, the alarm housing 801 is connected to the mounting base 10 in a penetrating manner, a transmission plug 802 is slidably connected to the inside of the alarm housing 801, a return spring 803 is fixed to one end of the transmission plug 802 close to the mounting base 10, the return spring 803 is fixedly connected to the inner wall of the alarm housing 801, a transmission rod 804 is fixed to one side of the transmission plug 802 away from the return spring 803, an alarm contact 805 is fixed to one end of the transmission rod 804 away from the transmission plug 802, a limit ring 806 is slidably connected to the outside of the alarm contact 805, the limit ring 806 is fixedly connected to the inner wall of the alarm housing 801, and an energizing contact 807 is fixed to one end of the limit ring 806 away from the alarm contact 805.

In this embodiment, after the cable is on fire, the temperature of flame combustion is conducted to the heat conducting wire 11 through the heat conducting block 12, so that the temperature of the heat conducting wire 11 rises, and thus the temperature of the side, away from the center of the alarm housing 801, of the transmission plug 802 rises synchronously, and further the pressure is increased, the increased pressure pushes the transmission plug 802 to stretch the return spring 803 so as to make the return spring slide in the alarm housing 801 after deformation, the transmission plug 802 moves to drive the transmission rod 804 to move, the transmission rod 804 moves to push the alarm contact 805 to slide in the limit ring 806, when the alarm contact 805 slides to be in contact with the power-on contact 807, the external alarm receives an alarm signal, and starts to operate to send out an alarm, so that the effect of automatic alarm after the cable is on fire is achieved.

EXAMPLE III

Referring to fig. 1, 2, 4 and 5, the present embodiment is substantially the same as the first and second embodiments, and more preferably, the positioning mechanism 9 includes a push-pull rod 901, one end of the push-pull rod 901 is rotatably connected to the transmission plug 802, one end of the push-pull rod 901 remote from the transmission plug 802 is rotatably connected to a rotating wheel 903, a fixing rod 902 is rotatably connected to the front end of the rotating wheel 903, the front end of the fixing rod 902 is fixedly connected to the alarm housing 801, an extension rod 904 is fixed to the outside of the rotating wheel 903, the extension rod 904 has four extension rods 904 distributed in an array and distributed outside the rotating wheel 903, a hammer 905 is fixed to the outside of the extension rod 904, a flutter ball 906 is disposed on one side of the rotating wheel 903 remote from the transmission plug 802, the distance from the flutter ball 906 to the center of the rotating wheel 903 is smaller than the distance from the hammer 905 to the center of the rotating wheel 903, a vibration spring 907 is fixed to one side of the flutter ball 906 remote from the rotating wheel 903, the vibration spring 907 is fixedly connected to the alarm housing 801, an echo ring 908 is fixed to the outside of the echo spring 907, the flutter ball 906 and the echo ring 908 are made of metal materials, and the echo ring 908 is fixedly connected with the alarm shell 801.

In this embodiment, after the cable is on fire, the driving plug 802 will stretch the return spring 803 to make it slide after stretching, the driving plug 802 can simultaneously drive the push-pull rod 901 to move in the sliding process, the push-pull rod 901 moves to push the rotating wheel 903 to rotate around the fixed rod 902, the rotating wheel 903 can simultaneously drive the extension rod 904 to rotate in the rotating process, the extension rod 904 rotates to drive the hammer head 905 to rotate, the hammer head 905 can strike the flutter ball 906 in the rotating process, the flutter ball 906 can generate vibration after being struck, and then the vibration spring 907 is driven to rotate, the bounce ball 906 strikes the echo ring 908 in a reciprocating manner during the shaking of the shaking spring 907, thereby generating a crisp sound, when the worker finds the alarm signal and comes to the bridge, the ignition point can be quickly determined according to the problem of sound, therefore, the effect that the striking sound is automatically sent out after the cable is on fire to help to position the ignition point is achieved.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.