阅读说明：本技术 一种龙门吊火灾检测及灭火触发的系统及方法 (System and method for detecting fire and triggering fire extinguishment of gantry crane ) 是由 杨晓刚 吴士杰 束孝华 金吉 黄瑾珉 姚文斌 钟卓远 于 2021-08-03 设计创作，主要内容包括：本发明涉及龙门吊火灾检测技术领域,特别地,涉及一种龙门吊火灾检测及灭火触发的系统及方法,包括配电箱,龙门吊驾驶室内安装有中控单元,本发明利用传感器以及摄像头采集信息并通过中控单元判定配电箱内腔内部是温度过高或者有明火产生,进而采取不同的应对措施,其一：温度过高,控制密封装置将排风通道开启,同时控制散热风扇对配电箱内腔进行降温处理,其二：有明火产生,中控单元控制移动机构进行移动并利用温度传感器采集配电箱内腔各个位置温度数值,最终将分配器停止在温度峰值点位上方,接着控制电磁控制组件,实现灭火装置内部灭火试剂从分配器内部向下喷出,实现点对点灭火,提高灭火效果。(The invention relates to the technical field of gantry crane fire detection, in particular to a system and a method for gantry crane fire detection and fire extinguishing triggering, wherein the system comprises a distribution box, a central control unit is arranged in a cab of a gantry crane, a sensor and a camera are used for acquiring information, the central control unit is used for judging whether the temperature in the inner cavity of the distribution box is too high or open fire is generated, and different countermeasures are taken, wherein one of the countermeasures is as follows: high temperature, control sealing device will exhaust air the passageway and open, and the simultaneous control radiator fan cools down the processing, its two to the block terminal inner chamber: when open fire occurs, the central control unit controls the moving mechanism to move, the temperature sensors are used for collecting temperature values of all positions of the inner cavity of the distribution box, finally the distributor is stopped above the temperature peak point position, the electromagnetic control assembly is controlled, fire extinguishing agents in the fire extinguishing device are sprayed downwards from the interior of the distributor, point-to-point fire extinguishing is achieved, and the fire extinguishing effect is improved.)

1. The utility model provides a system that portal crane conflagration detected and put out a fire and trigger, includes block terminal (11), its characterized in that: install well accuse unit (47) in the portal crane driver's cabin, on block terminal (11) and the inside extinguishing device that is equipped with of block terminal inner chamber (12), extinguishing device is including distributor (32) that is used for distributing fire extinguishing agent, install the moving mechanism that is used for driving distributor (32) to remove in block terminal inner chamber (12), fixed temperature sensor (35) and smoke transducer (36) of being equipped with on distributor (32), the fixed camera (37) that is equipped with of block terminal inner chamber (12) inner wall, be equipped with the electromagnetic control assembly who is used for controlling the release of fire extinguishing agent on block terminal (11), be equipped with air exhaust passageway (42) with block terminal inner chamber (12) and external intercommunication on block terminal (11), the inside radiator fan (43) that is equipped with of air exhaust passageway (42), be equipped with on block terminal (11) with sealed chamber (44) that air exhaust passageway (42) communicates, and a sealing device for sealing the air exhaust channel (42) is arranged in the sealing cavity (44).

2. The system for detecting fire and triggering fire extinguishment of the gantry crane according to claim 1, wherein: the driver's cabin internally mounted has bee calling organ (48) and display panel (49), bee calling organ (48), display panel (49), temperature sensor (35), smoke transducer (36), camera (37), electromagnetic control assembly, moving mechanism, sealing device and radiator fan (43) all with well accuse unit (47) electric connection.

3. The system for detecting fire and triggering fire extinguishment of the gantry crane according to claim 2, wherein: moving mechanism includes first spout (24) that block terminal inner chamber (12) upper wall was seted up, the inside slip of first spout (24) is equipped with and extends to first slide bar (25) in block terminal inner chamber (12), first slide bar (25) lower extreme is fixed to be equipped with removes rail (26), block terminal inner chamber (12) lateral wall is fixed to be equipped with second motor (38), the output fixedly connected with second lead screw (39) of second motor (38), second lead screw (39) with remove rail (26) screw-thread fit and realize the horizontal migration of removing rail (26).

4. The system for detecting fire and triggering fire extinguishment of the gantry crane according to claim 3, wherein the system comprises: the moving mechanism further comprises a second sliding groove (27) formed in the moving rail (26), a sliding plate (29) extending out of the sliding rail (26) is arranged in the second sliding groove (27) in a sliding mode, a first motor (31) is fixedly arranged at the side end of the sliding rail (26), an output shaft of the first motor (31) is fixedly connected with a first lead screw (30) penetrating through the second sliding groove (27), the first lead screw (30) is in threaded connection with the sliding plate (29), a distributor (32) is fixed on the sliding plate (29), and a shielding cover (33) assisting in spraying of fire extinguishing agents is fixedly arranged at the lower end of the distributor (32).

5. The system for detecting fire and triggering fire extinguishment of the gantry crane according to claim 1, wherein: a sensor positioning plate (34) is fixedly arranged on the distributor (32), and the temperature sensor (35) and the smoke sensor (36) are both fixed on the sensor positioning plate (34).

6. The system for detecting fire and triggering fire extinguishment of the gantry crane according to claim 1, wherein: the fire extinguishing device comprises a carbon dioxide storage tank (14), a port of the carbon dioxide storage tank (14) extends to the inside of the connecting sleeve (16) and is in threaded connection, and a release valve (15) used for controlling the release of carbon dioxide is fixedly arranged in the port of the carbon dioxide storage tank (14).

7. The system for detecting fire and triggering fire extinguishment of the gantry crane according to claim 1, wherein: be equipped with connecting sleeve (16) with block terminal inner chamber (12) and external intercommunication on block terminal (11), connecting sleeve (16) inner chamber is fixed and is equipped with locating plate (17), fixed trigger sleeve (18) that is equipped with on locating plate (17), solenoid electric components includes trigger sleeve inner chamber (19) inside gliding ejector pin (23), gliding armature plate (20) about ejector pin (23) lower extreme is fixed and is equipped with, trigger sleeve inner chamber (19) inner wall is fixed and is equipped with electro-magnet (21), ejector pin (23) pass electro-magnet (21) upwards extend, electro-magnet (21) with be equipped with the cover between armature plate (20) spring (22) in the ejector pin (23) outside.

8. The system for detecting fire and triggering fire of the gantry crane according to claim 7, wherein: a delivery pipe (28) is communicated between the connecting sleeve (16) and the distributor (32).

9. The system for detecting fire and triggering fire extinguishment of the gantry crane according to claim 1, wherein: sealing device includes sealing door (45), slide rail (41), gyro wheel (40), third lead screw (46), opens and close motor (13), sealing door (45) are in sealed chamber (44) inside slides, slide rail (41) fixed mounting be in sealed chamber (44) inner wall, gyro wheel (40) are installed on sealing door (45) and roll on slide rail (41), third lead screw (46) run through sealed chamber (44) inner wall and with sealing door (45) screw-thread fit, it fixes to open and close motor (13) on block terminal (11), open and close the output shaft of motor (13) with third lead screw (46) one end fixed connection.

10. A method for detecting and triggering fire extinguishing of a gantry crane based on the system for detecting and triggering fire extinguishing of a gantry crane according to any one of claims 1 to 9, characterized in that:

s1: the temperature sensor (35) and the smoke sensor (36) are normally opened, the internal temperature of the inner cavity (12) of the distribution box is detected in real time, signals are converted through the signal conversion module, and then the signals are transmitted to the central control unit (47);

s2: when the internal temperature of the inner cavity (12) of the distribution box exceeds a set threshold value, the central control unit (47) controls a buzzer (48) in the cab to respond and remind a driver of fault, and the central control unit (47) controls the camera (37) to be started and detects whether the internal part of the inner cavity (12) of the distribution box catches fire or not;

s3: the camera (37) transmits a signal to the central control unit (47), the central control unit is matched with the temperature sensor (35) and the smoke sensor (36) to use to judge whether open fire is found or not, and the environment inside the inner cavity (12) of the distribution box is displayed on the display panel (49);

s4: when open fire does not appear in the inner cavity (12) of the distribution box, the sealing device is normally closed, the central control unit (47) controls the starting and stopping motor (13) to start, so that the third screw rod (46) is driven, the sealing door (45) is driven to move, the air exhaust channel (42) is opened, meanwhile, the central control unit (47) controls the driving of the cooling fan (43), so that hot air in the inner cavity (12) of the distribution box is conveyed outwards, and cooling treatment is achieved;

s5: when open fire occurs in the inner cavity (12) of the distribution box, the central control unit (47) controls the first motor (31) and the second motor (38) to further drive the distributor (32) to move in the inner cavity (12) of the distribution box, further drive the temperature sensor (35) to detect the temperature value in the inner cavity (12) of the distribution box, and stop the distributor (32) at the temperature peak point;

s6: the central control unit (47) is used for electrifying the electromagnet (21) so as to generate magnetic force to attract the armature plate (20) to move upwards and extrude the spring (22), and at the moment, the ejector rod (23) moves upwards and is abutted against the release valve (15) so as to control the release valve (15) to be opened;

s7: high pressure carbon dioxide inside the carbon dioxide storage tank (14) enters the inside of the distributor (32) through the connection sleeve (16) and the delivery pipe (28) and is sprayed downward through the shield (33) to extinguish the fire.

Technical Field

The invention relates to the technical field of gantry crane fire detection, in particular to a system and a method for gantry crane fire detection and fire extinguishing triggering.

Background

A gantry crane and a gantry crane are mainly used for loading and unloading outdoor goods yards, stockyards and bulk goods.

The goods quality of portal crane loading and unloading is big, needs frequent going up and down to lifting hook, and the portal crane current size takes place frequent transformation in the course of the work, causes the circuit temperature too high easily, influences the life of circuit, causes the block terminal to take place the conflagration simultaneously easily.

Among the prior art, the block terminal is installed in the driver's cabin outside, the operator is carrying out the handling in-process to the goods, the inside condition of discovery block terminal that can not be timely, the lifting hook is at frequent lift in-process, cause the inside electric current of cable to change, make the cable temperature rise easily, and then cause the conflagration, the inside fire extinguishing equipment that disposes of current block terminal, but can not realize point-to-point putting out a fire according to the position of ignition, the fire extinguishing effect is not good, current fire extinguishing equipment is when launching simultaneously, can not be timely with conflagration situation feedback to the driver's cabin, influence the quick judgement of making of operator, how to design a conflagration detection and the system that triggers of putting out a fire and become the technical problem that technical staff in the field awaits urgent need to solve for this reason.

Disclosure of Invention

The present invention provides a system and method for detecting a fire and triggering fire extinguishing of a gantry crane.

In order to solve the technical problems, the technical scheme of the invention is as follows:

a system and a method for detecting fire and triggering fire extinguishment of a gantry crane comprise a distribution box, a central control unit is arranged in a cab of the gantry crane, fire extinguishing devices are arranged on the distribution box and inside the inner cavity of the distribution box, each fire extinguishing device comprises a distributor for distributing a fire extinguishing agent, a moving mechanism for driving the distributor to move is arranged in the inner cavity of the distribution box, a temperature sensor and a smoke sensor are fixedly arranged on the distributor, a camera is fixedly arranged on the inner wall of the inner cavity of the distribution box, an electromagnetic control assembly for controlling the release of the fire extinguishing agent is arranged on the distribution box, the distribution box is provided with an air exhaust channel which communicates the inner cavity of the distribution box with the outside, a cooling fan is arranged in the air exhaust channel, the distribution box is provided with a sealing cavity communicated with the air exhaust channel, and a sealing device used for sealing the air exhaust channel is arranged in the sealing cavity.

The invention collects the environment change information of the inner cavity of the distribution box by using the sensor and the camera and transmits the information to the central control unit, so that the information is transmitted to the display panel in the cab for real-time detection, and the driver is informed in time and makes a judgment quickly;

utilize sensor and camera information collection and through well accuse unit to judge that the block terminal inner chamber is inside to be the high temperature or there is naked light to produce, and then take different counter measures, one of them: high temperature, control sealing device will exhaust air the passageway and open, and the simultaneous control radiator fan cools down the processing, its two to the block terminal inner chamber: when open fire occurs, the central control unit controls the moving mechanism to move, the temperature sensors are used for collecting temperature values of all positions of the inner cavity of the distribution box, finally the distributor is stopped above the temperature peak point position, the electromagnetic control assembly is controlled, fire extinguishing agents in the fire extinguishing device are sprayed downwards from the interior of the distributor, point-to-point fire extinguishing is achieved, and the fire extinguishing effect is improved.

Furthermore, the driver's cabin internally mounted has bee calling organ and display panel, bee calling organ, display panel, temperature sensor, smoke transducer, camera, electromagnetic control assembly, moving mechanism, sealing device and radiator fan all with well accuse unit electric connection.

Further, the moving mechanism includes the first spout that the block terminal inner chamber upper wall was seted up, the inside slip of first spout is equipped with and extends to first slide bar in the block terminal inner chamber, the fixed removal rail that is equipped with of first slide bar lower extreme, the fixed second motor that is equipped with of block terminal inner chamber lateral wall, the output end fixedly connected with second lead screw of second motor, the second lead screw with remove rail screw-thread fit and realize the horizontal migration of removal rail.

Furthermore, the moving mechanism further comprises a second sliding groove formed in the moving rail, a sliding plate extending out of the sliding rail is arranged in the second sliding groove in a sliding mode, a first motor is fixedly arranged on the side end of the sliding rail, a first lead screw penetrating through the second sliding groove is fixedly connected to an output shaft of the first motor, the first lead screw is in threaded connection with the sliding plate, the distributor is fixed on the sliding plate, and a shielding cover assisting in spraying of fire extinguishing agents is fixedly arranged at the lower end of the distributor.

Furthermore, a sensor positioning plate is fixedly arranged on the distributor, and the temperature sensor and the smoke sensor are both fixed on the sensor positioning plate.

Further, extinguishing device includes carbon dioxide storage jar, carbon dioxide storage jar port extends to inside and threaded connection of coupling sleeve, carbon dioxide storage jar end internal fixation is equipped with the release valve that is used for controlling the carbon dioxide release.

Further, be equipped with the connecting sleeve with block terminal inner chamber and external intercommunication on the block terminal, the fixed locating plate that is equipped with of connecting sleeve inner chamber, the fixed trigger sleeve that is equipped with on the locating plate, solenoid electric component includes the gliding ejector pin of trigger sleeve inner chamber inside, gliding armature plate about the fixed being equipped with of ejector pin lower extreme, the fixed electro-magnet that is equipped with of trigger sleeve inner chamber inner wall, the ejector pin passes the electro-magnet upwards extends, the electro-magnet with be equipped with the cover between the armature plate the spring in the ejector pin outside.

Furthermore, a conveying pipe is communicated between the connecting sleeve and the distributor.

Further, sealing device includes sealing door, slide rail, gyro wheel, third lead screw, opens and close the motor, sealing door is in the inside slip of sealing chamber, slide rail fixed mounting in the sealing chamber inner wall, the gyro wheel is installed on the sealing door and roll on the slide rail, the third lead screw run through the sealing chamber inner wall and with sealing door screw-thread fit, it fixes to open and close the motor on the block terminal, open and close the output shaft of motor with third lead screw one end fixed connection.

A method for detecting fire and triggering fire extinguishment of a gantry crane is operated according to the following steps:

s1: the temperature sensor and the smoke sensor are normally opened, the temperature inside the inner cavity of the distribution box is detected in real time, signals are converted through the signal conversion module, and then the signals are transmitted to the central control unit;

s2: when the temperature in the inner cavity of the distribution box exceeds a set threshold value, the central control unit controls a buzzer in the cab to respond and reminds a driver of a fault, and controls the camera to be started and detects whether the inner cavity of the distribution box catches fire or not;

s3: the camera transmits signals to the central control unit, the central control unit is matched with the temperature sensor and the smoke sensor to judge whether open fire is found or not, and the environment inside the inner cavity of the distribution box is displayed on the display panel;

s4: when open fire does not appear in the inner cavity of the distribution box, the sealing device is normally closed, the central control unit controls the starting and stopping motor to start, so that the third screw rod is driven, the sealing door is driven to move, the exhaust channel is opened, meanwhile, the central control unit controls the driving of the cooling fan, so that hot air in the inner cavity of the distribution box is conveyed outwards, and cooling treatment is realized;

s5: when open fire occurs in the inner cavity of the distribution box, the central control unit controls the first motor and the second motor so as to drive the distributor to move in the inner cavity of the distribution box, further drive the temperature sensor to detect the temperature value in the inner cavity of the distribution box and stop the distributor at the temperature peak point;

s6: the central control unit is used for electrifying the electromagnet, generating magnetic force to attract the armature plate to move upwards and extrude the spring, and the ejector rod moves upwards and abuts against the release valve to control the release valve to open;

s7: the high-pressure carbon dioxide in the carbon dioxide storage tank enters the distributor through the connecting sleeve and the conveying pipe and is sprayed downwards through the shielding cover, and then the fire is extinguished.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged schematic view of A in FIG. 1;

FIG. 3 is a cross-sectional view of FIG. 1;

FIG. 4 is a schematic structural diagram of B-B in FIG. 3;

FIG. 5 is an enlarged view of C in FIG. 3;

FIG. 6 is an enlarged view of D in FIG. 3;

FIG. 7 is an enlarged view of E in FIG. 4;

FIG. 8 is a schematic view of the structure of F-F in FIG. 7;

FIG. 9 is a control relationship diagram of the central control unit;

fig. 10 is a fire suppression triggering logic diagram.

Reference numerals: 11. a distribution box; 12. an inner cavity of the distribution box; 13. starting and stopping the motor; 14. a carbon dioxide storage tank; 15. a release valve; 16. a connecting sleeve; 17. positioning a plate; 18. triggering the sleeve; 19. an inner cavity of the trigger sleeve; 20. an armature plate; 21. an electromagnet; 22. a spring; 23. a top rod; 24. a first chute; 25. a first slide bar; 26. a moving rail; 27. a second chute; 28. a delivery pipe; 29. a sliding plate; 30. a first lead screw; 31. a first motor; 32. a dispenser; 33. a shield cover; 34. a sensor positioning plate; 35. a temperature sensor; 36. a smoke sensor; 37. a camera; 38. a second motor; 39. a second lead screw; 40. a roller; 41. a slide rail; 42. an air exhaust channel; 43. a heat radiation fan; 44. sealing the cavity; 45. a sealing door; 46. a third screw rod; 47. a central control unit; 48. a buzzer; 49. a display panel.

Detailed Description

The following detailed description of the embodiments of the present invention is provided in order to make the technical solution of the present invention easier to understand and understand.

Example (b):

the embodiment provides a system and a method for detecting a fire disaster and triggering fire extinguishment of a gantry crane, which are mainly used for being installed in a distribution box of the gantry crane to detect and extinguish the fire disaster.

Comprises a distribution box 11, a central control unit 47 is arranged in a driving cab of the gantry crane, fire extinguishing devices are arranged on the distribution box 11 and inside an inner cavity 12 of the distribution box, the fire extinguishing device comprises a distributor 32 for distributing fire extinguishing agent, a moving mechanism for driving the distributor 32 to move is arranged in the inner cavity 12 of the distribution box, a temperature sensor 35 and a smoke sensor 36 are fixedly arranged on the distributor 32, a camera 37 is fixedly arranged on the inner wall of the inner cavity 12 of the distribution box, an electromagnetic control assembly for controlling the release of the fire extinguishing agent is arranged on the distribution box 11, an exhaust passage 42 for communicating the inner cavity 12 of the distribution box with the outside is arranged on the distribution box 11, the inside of the air exhaust channel 42 is provided with a cooling fan 43, the distribution box 11 is provided with a sealing cavity 44 communicated with the air exhaust channel 42, and the inside of the sealing cavity 44 is provided with a sealing device for sealing the air exhaust channel 42.

Specifically, the method comprises the following steps:

in order to realize the centralized control of the central control unit 47, as shown in fig. 9, a buzzer 48 and a display panel 49 are installed inside the cab, and the buzzer 48, the display panel 49, the temperature sensor 35, the smoke sensor 36, the camera 37, the electromagnetic control assembly, the moving mechanism, the sealing device, and the cooling fan 43 are all electrically connected to the central control unit 47.

Through the arrangement, the central control unit 47 receives signals transmitted by the sensor and the camera 37, the signals are processed and then transmitted to the display panel 49 to be displayed, the buzzer 48 is controlled to give an alarm, the electromagnetic control assembly is controlled to release the fire extinguishing agent through the central control unit 47, the moving mechanism is controlled to move by the central control unit 47, the position of a fire point is detected by the sensor and the camera, the distributor 32 is moved above a fire source, the opening and closing of the sealing device are controlled, and the inner cavity 12 of the distribution box is sealed or cooled.

In order to realize the transverse movement of the moving rail 36, in this embodiment, as shown in fig. 4 and 5, the moving mechanism includes a first sliding groove 24 formed in the upper wall of the inner cavity 12 of the distribution box, a first sliding rod 25 extending into the inner cavity 12 of the distribution box is slidably disposed inside the first sliding groove 24, the lower end of the first sliding rod 25 is fixedly provided with the moving rail 26, the side wall of the inner cavity 12 of the distribution box is fixedly provided with a second motor 38, the output end of the second motor 38 is fixedly connected with a second screw rod 39, and the second screw rod 39 is in threaded fit with the moving rail 26 to realize the horizontal movement of the moving rail 26.

With the above arrangement, by driving the second motor 38, the second lead screw 39 is driven to rotate, and since the first sliding rod 25 extends into the first sliding groove 24 to limit the turning of the moving rail 26, the moving rail 26 can move transversely along the length direction of the first sliding groove 24.

In order to realize the longitudinal movement of the distributor 32, in the embodiment, as shown in fig. 5, the moving mechanism further includes a second sliding chute 27 formed in the moving rail 26, a sliding plate 29 extending out of the sliding rail 26 is slidably disposed in the second sliding chute 27, a first motor 31 is fixedly disposed at a side end of the sliding rail 26, a first lead screw 30 penetrating through the second sliding chute 27 is fixedly connected to an output shaft of the first motor 31, the first lead screw 30 is in threaded connection with the sliding plate 29, the distributor 32 is fixed on the sliding plate 29, and a shielding cover 33 for assisting the spraying of the fire extinguishing agent is fixedly disposed at a lower end of the distributor 32.

Through the above arrangement, the first motor 31 is driven, and then the first lead screw 30 is driven to rotate, and as the sliding plate 29 is abutted against the inner wall of the second chute 27 and is in threaded fit with the first lead screw 30, the sliding plate 29 can be driven to longitudinally slide along the second chute 27, and then the distributor 32 fixedly connected is driven to longitudinally move, and the distributor 32 can be moved at any point position in the inner cavity 12 of the distribution box by combining with the transverse movement of the movable rail 26.

In order to realize the movement of the temperature sensor 35 and the smoke sensor 36, in this embodiment, as shown in fig. 5, a sensor positioning plate 34 is fixedly disposed on the distributor 32, and both the temperature sensor 35 and the smoke sensor 36 are fixed on the sensor positioning plate 34.

Through the setting, install temperature sensor 35 and smoke transducer 36 on distributor 32, and then can carry out all-round detection to the inside temperature of block terminal inner chamber 12, and then be convenient for accurately detect out the ignition point position.

In order to realize the storage of the fire extinguishing agent, in the embodiment, as shown in fig. 3, 4 and 6, the fire extinguishing apparatus includes a carbon dioxide storage tank 14, a port of the carbon dioxide storage tank 14 extends to the inside of the connecting sleeve 16 and is connected with the connecting sleeve by screw threads, and a release valve 15 for controlling the release of carbon dioxide is fixedly arranged in the port of the carbon dioxide storage tank 14.

In order to realize that the electromagnetic control assembly controls the release valve 15 to be opened, in this embodiment, as shown in fig. 2 and fig. 6, a connecting sleeve 16 for communicating the inner cavity 12 of the distribution box with the outside is arranged on the distribution box 11, a positioning plate 17 is fixedly arranged in the inner cavity of the connecting sleeve 16, a trigger sleeve 18 is fixedly arranged on the positioning plate 17, the electromagnetic control assembly includes a push rod 23 sliding in the inner cavity 19 of the trigger sleeve, an armature plate 20 sliding up and down is fixedly arranged at the lower end of the push rod 23, an electromagnet 21 is fixedly arranged on the inner wall of the inner cavity 19 of the trigger sleeve, the push rod 23 penetrates through the electromagnet 21 to extend upwards, and a spring 22 sleeved outside the push rod 23 is arranged between the electromagnet 21 and the armature plate 20.

Through the arrangement, when the inner cavity 12 of the distribution box catches fire, the electromagnet 21 is electrified, magnetic force is generated to attract the armature plate 20 to move upwards and compress the spring 22, the ejector rod 23 is pushed to move upwards and abut against the release valve 15, opening of the release valve 15 is controlled, when the electromagnet 21 stops power supply, the spring 22 pushes the armature plate 20 to reset, the ejector rod 23 is driven to move downwards, the ejector rod 23 is separated from the release valve 15 at the moment, and the release valve 15 is closed.

In order to achieve the delivery of the fire suppressant, in this embodiment, as shown in fig. 5, a delivery tube 28 is provided in communication between the connecting sleeve 16 and the distributor 32.

In order to realize the cooling and sealing of the inner cavity 12 of the distribution box, in this embodiment, as shown in fig. 7 and 8, the sealing device includes a sealing door 45, a sliding rail 41, a roller 40, a third lead screw 46, and an opening and closing motor 13, the sealing door 45 slides inside the sealing cavity 44, the sliding rail 41 is fixedly mounted on the inner wall of the sealing cavity 44, the roller 40 is mounted on the sealing door 45 and rolls on the sliding rail 41, the third lead screw 46 runs through the inner wall of the sealing cavity 44 and is in threaded fit with the sealing door 45, the opening and closing motor 13 is fixed on the distribution box 11, and an output shaft of the opening and closing motor 13 is fixedly connected with one end of the third lead screw 46.

Through the above arrangement, when the inner cavity 12 of the distribution box needs to be cooled, the control start-stop motor 13 works, and then the third lead screw 46 is driven to rotate, and then the closed door 45 with the thread fit is driven to move, and then the exhaust passage 42 is opened, meanwhile, the heat dissipation fan 43 is powered, and then the heat dissipation fan is driven to rotate, so that the hot air in the inner cavity 12 of the distribution box is discharged outwards, the exchange between the air flow in the inner cavity 12 of the distribution box and the external air flow is realized, and the temperature in the inner cavity 12 of the distribution box is reduced.

The implementation principle is as follows: the temperature sensor 35 and the smoke sensor 36 are used for detecting the internal temperature of the inner cavity 12 of the distribution box in real time, converting signals through a signal conversion module and then transmitting the signals to the central control unit 47; when the temperature in the inner cavity 12 of the distribution box exceeds a set threshold value, the central control unit 47 controls a buzzer 48 in the cab to respond and remind a driver of a fault, and the central control unit 47 controls the camera 37 to be started and detects whether the inner cavity 12 of the distribution box catches fire or not; the camera 37 transmits signals to the central control unit 47, the central control unit is matched with the temperature sensor 35 and the smoke sensor 36 to judge whether open fire is found or not, and the environment inside the inner cavity 12 of the distribution box is displayed on the display panel 49; when open fire does not appear in the inner cavity 12 of the distribution box, the sealing device is normally closed, the central control unit 47 controls the starting and stopping motor 13 to start, so that the third screw rod 46 is driven, the sealing door 45 is driven to move, the exhaust channel 42 is opened, meanwhile, the central control unit 47 controls the driving of the cooling fan 43, so that hot air in the inner cavity 12 of the distribution box is conveyed outwards, and the cooling treatment of the inner cavity 12 of the distribution box is realized; when open fire occurs in the inner cavity 12 of the distribution box, the central control unit 47 controls the first motor 31 and the second motor 38 to drive the distributor 32 to move in the inner cavity 12 of the distribution box, further drive the temperature sensor 35 to detect the temperature value in the inner cavity 12 of the distribution box, and stop the distributor 32 at the temperature peak point; the central control unit 47 energizes the electromagnet 21, so that magnetic force is generated to attract the armature plate 20 to move upwards and extrude the spring 22, and at the moment, the ejector rod 23 moves upwards and abuts against the release valve 15, so that the release valve 15 is controlled to be opened; the high pressure carbon dioxide inside the carbon dioxide storage tank 14 enters the interior of the distributor 32 through the connecting sleeve 16 and the delivery pipe 28 and is sprayed downward through the shield 33, thereby extinguishing the fire.

The above are only typical examples of the present invention, and besides, the present invention may have other embodiments, and all technical solutions formed by equivalent substitutions or equivalent transformations fall within the scope of the present invention.