Fire detection and camera device in the cargo hold of a container ship

Abstract

The present invention relates to the technical field of fire detection systems for container ships, and discloses a fire detection and imaging device in the cargo hold of a container ship, a temperature sensor, a camera, and a parallel circuit. The temperature sensor includes a mounting plate, and a mounting seat is provided at the bottom of the mounting plate. The camera includes a top plate, and a housing is fixedly installed at the bottom of the top plate. A fixed control component is provided inside the housing. The parallel circuit connects the temperature sensor and the camera to a power source. For this fire detection and imaging device in the cargo hold of a container ship, by setting the temperature sensor and the camera, based on the internal structure of the ship's hold, the camera and the temperature sensor can be arranged first according to the cabin design drawings and the requirements of the manufacturer, so that the camera is in a good field of view, and then the temperature sensor is gradually installed, so that each camera can be connected in parallel with multiple groups of temperature sensors, achieving the purpose of synchronously detecting and preventing fires in terms of field of view and temperature sensing, and reducing the cost of simultaneously deploying a smoke detection system and a fire detection system.

Description

Technical Field

[0001] The present invention relates to the technical field of fire detection systems for container ships, and specifically to a fire detection and imaging device in the cargo hold of a container ship. Background Art

[0002] For conventional container ships, according to the requirements of SOLAS regulations, a cargo hold smoke detection system (Cargo Hold Smoke Detection System) is equipped in the cargo hold. That is, the fire in the cargo hold is monitored. When a fire breaks out in the cargo hold, the generated smoke is pumped by the cargo hold fan through the CO2 release pipeline and the three-way conversion valve group to the main alarm unit. When the smoke concentration exceeds the specified value, the system alarms and feeds back to the repeater panel to show which hold is on fire, reminding the duty personnel to handle it promptly.

[0003] However, for container ships with the DNV FCS (FD) class notation, in addition to the cargo hold smoke detection system required by SOLAS above, an additional fire detection system needs to be equipped. Currently, the existing fire detection systems are costly, and most of them are for smoke detection. When a fire occurs in the cabin, if the smoke does not pass through the location where the smoke detection system is arranged, it is easy to miss the detection, thus delaying the discovery time of the fire and making it impossible to extinguish it in time, increasing property losses. Moreover, the current fire detection systems in the cabin are all monitored by circuits. When a fire occurs, if the monitoring circuit is damaged, it is easy to cause power out of control in the cabin and unable to cut off the power in time, thus bringing danger to the firefighters. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the present invention provides a fire detection and imaging device in the cargo hold of a container ship, which solves the problems mentioned in the above background.

[0005] The present invention provides the following technical solutions: A fire detection and imaging device in the cargo hold of a container ship, comprising:

[0006] A temperature sensor probe, the temperature sensor probe includes a mounting plate, a mounting seat is provided at the bottom of the mounting plate, a regulating member is slidably connected to the outer edge of the mounting seat, a semi-enclosed wax melting box is fixedly installed on the outer edge of the mounting seat, and one end of the regulating member penetrates through the wax melting box. The bottom of the mounting seat is fixedly installed with a bottom shell with a honeycomb-shaped outer edge, and a thermal-sensitive component is fixedly installed at the bottom of the inner wall of the bottom shell. The mounting seat is a hollow ring-shaped insulating structure. Limiting blocks and connecting tubes are respectively fixedly installed on the inner wall of the hollow part of the mounting seat. One end of the connecting tube is provided with an insulating sliding group. The inner wall of the insulating sliding group penetrates through the connecting tube and a tension spring is fixedly installed. One end of the tension spring away from the insulating sliding group is fixedly installed on the inner wall of the inner ring of the mounting seat. The end of the insulating sliding group close to the connecting tube is inserted into the connecting tube, and a current conducting piece is connected in the connecting tube.

[0007] A camera, the camera includes a top plate, a housing is fixedly installed at the bottom of the top plate, a fixed control component is arranged inside the housing, the fixed control component controls a rotating rod after being connected to an electric current, a smoke recognition head is arranged at the bottom of the rotating rod, a chute is opened on the side surface of the housing, and a fixed-rail active control component for fixing the rotation direction of the smoke recognition head is slidably connected to the inner wall of the chute;

[0008] A parallel circuit, the parallel circuit connects a temperature-sensitive probe and a camera to a power supply, resistors are arranged at both ends of the camera connected to the parallel circuit, and the temperature-sensitive probe is provided with another set of parallel circuit connected to a circuit breaker at the power supply.

[0009] Preferably, connecting rods are arranged at both ends of the top of the thermosensitive component, and the temperature-sensitive probe is connected to a wire through the connecting rods and is connected in parallel with the power supply of the camera.

[0010] Preferably, the cross-section of the wax melting box is an L-shaped figure when viewed from above, the overall shape of the regulating member is a semi-circular arc-shaped strip, a connecting block is arranged on the inner wall of the regulating member, and is fixedly installed through the outer wall of the mounting seat and the outer wall of the insulating sliding group. Pressing wax blocks and dialing blocks are respectively fixedly installed at the outer edge of the regulating member. The length of the pressing wax block corresponds to the distance between the inner wall of the wax melting box and the outer edge of the regulating member closest to the regulating member. The distance between the dialing block and the pressing wax block is one-fourth of the side length of the outer edge of the mounting seat, and the distance between the pressing wax block and the deepest part of the inner wall of the wax melting box corresponds to the distance between the insulating sliding group and the power connection pipe.

[0011] Preferably, the insulating sliding group includes a slider, pulleys are arranged on the inner wall of the slider, the number of the pulleys is two, a pull rod is arranged between the two pulleys, the pull rod is fixedly connected to the center of the inner wall of the slider, and one end of the pull rod away from the pulley penetrates into the inner ring of the mounting seat and is fixedly installed with one end of a tension spring. A probe rod is arranged at one end of the slider close to the power connection pipe. A second contact piece is fixedly installed at one end of the probe rod penetrating into the power connection pipe. A contact core is inlaid on the inner walls of the slider and the probe rod. One end of the contact core is connected to the second contact piece, and the other end of the contact core is connected to a wire.

[0012] Preferably, an arc-shaped groove is opened at one end of the power connection pipe close to the insulating sliding group. The cross-sectional shape of the inner wall of the arc-shaped groove corresponds to one end of the insulating sliding group close to the power connection pipe. A first contact piece is fixedly installed at the deepest part of the inner wall of the arc-shaped groove. The side surface of the first contact piece is connected to a wire penetrating through the power connection pipe.

[0013] Preferably, the fixed control component includes a motor, the motor is fixedly installed on the side of the housing, the output shaft of the motor penetrates the housing and is fixedly installed with a worm, a one-way bearing is engaged on the outer edge of the worm, the inner ring of the one-way bearing is made of conductive metal material, the center of the one-way bearing is fixedly sleeved on the surface of the rotating rod, there are two fixed control components, and the two fixed control components are arranged on the housing in sections, and the rotation directions of the one-way bearings in the two fixed control components are opposite.

[0014] Preferably, a contact block is arranged on the inner ring of the one-way bearing, the position of the contact block corresponds to the position of the fixed rail active control component, and the contact block is made of conductive material.

[0015] Preferably, the fixed rail active control component includes a sliding member, the sliding member is made of insulating material, the sliding member is a hollow T-shaped structure, a fastening nut is threadedly connected to the surface of the sliding member near the outer side, an insulating box is fixedly installed at the outer end of the sliding member, a conductive rod is slidably connected to the inner wall of the sliding member, one end of the conductive rod is fixedly installed with a power-on block, the other end of the conductive rod penetrates the insulating box, and both the conductive rod and the power-on block are made of conductive material, a baffle is fixedly sleeved on the surface of the conductive rod, and a spring is arranged on one side of the baffle, and both the baffle and the spring are located inside the insulating box.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. For the fire detection and camera device in the cargo hold of the box ship, by setting the temperature sensor probe and the camera, based on the internal structure of the cabin, the camera and the temperature sensor probe can be arranged first according to the cabin design drawing and the manufacturer's requirements, so that the camera is in a good visual field, and then the temperature sensor probe is gradually installed, so that each camera can be connected in parallel with multiple groups of temperature sensor probes, achieving the purpose of synchronous detection and prevention of fire in terms of vision and temperature sensing, and reducing the cost of simultaneously arranging the smoke detection system and the fire detection system.

[0018] 2. For the fire detection and camera device in the cargo hold of the box ship, when the temperature received by the temperature sensor probe rises, the start or stop of the camera is controlled by using the temperature change threshold sensed by the temperature sensor probe. When the temperature is too high, the camera will start to capture the high-temperature area. By using the normal dormancy of the camera, the power consumption is reduced, and at the same time, the fire detection and camera device is more accurate in detecting fires, avoiding misjudgment. Moreover, the captured image of the camera can be directly uploaded to the total control, enabling the staff to immediately determine whether the alarm is caused by a fire.

[0019] 3. The fire detection and camera device in the cargo hold of this container ship uses a temperature sensor probe to set up another parallel circuit connected to the circuit breaker protector at the power supply. When the temperature sensed by the temperature sensor probe is too high, the wax stick inserted in the wax melting box melts, causing the first contact piece and the second contact piece to come into contact, short-circuiting the current through the circuit breaker protector and tripping the breaker, thus preventing the occurrence of conductive situations in the cabin due to damaged circuits and improving the safety of the fire-fighting personnel. Brief Description of the Drawings

[0020] Figure 1 Figure [X] is a schematic diagram of the overall structure of the temperature sensor probe of the present invention;

[0021] Figure 2 Figure [X] is a schematic diagram of the overall structure of the camera of the present invention;

[0022] Figure 3 Figure [X] is a schematic diagram of the side sectional structure of the temperature sensor probe of the present invention;

[0023] Figure 4 Figure [X] is a schematic diagram of the upward view of the cross-section at the mounting base of the temperature sensor probe of the present invention;

[0024] Figure 5 Figure [X] is a schematic diagram of the upward view of the cross-section at the power connection tube of the temperature sensor probe of the present invention;

[0025] Figure 6 Figure [X] is a schematic diagram of the rear view of the camera of the present invention;

[0026] Figure 7 Figure [X] is a schematic diagram of the upward view of the cross-section at the fixed control component of the camera of the present invention;

[0027] Figure 8 In the present invention Figure 7 Enlarged structure schematic diagram at position A;

[0028] Figure 9 Figure [X] is a schematic diagram of the parallel circuit structure of the present invention.

[0029] In the figures: 1. mounting plate; 2. mounting base; 3. wax melting box; 4. bottom shell; 5. regulating part; 6. dial block; 7. wax pressing block; 8. top plate; 9. outer shell; 10. fixed control component; 101. motor; 102. worm; 103. one-way bearing; 11. sliding groove; 12. rotating rod; 13. smoke recognition head; 14. tension spring; 15. thermal sensitive component; 16. connecting rod; 17. limiting block; 18. power connection tube; 19. insulating sliding group; 191. slider; 192. pulley; 193. pull rod; 194. probe rod; 195. contact core; 20. arc groove; 21. first contact piece; 22. second contact piece; 23. fixed rail and movable control component; 231. sliding part; 232. fastening nut; 233. insulating box; 234. conductive rod; 235. baffle; 236. spring; 237. energized block; 24. contact block. Detailed Description of the Invention

[0030] Next, in combination with the accompanying drawings in the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] Please refer to Figures 1-9 , a fire detection and camera device in the cargo hold of a box ship, comprising:

[0032] A temperature sensor probe, which includes a mounting plate 1. At the bottom of the mounting plate 1, there is a mounting seat 2. The outer edge of the mounting seat 2 is slidably connected with a regulating member 5. A semi-enclosed wax melting box 3 is fixedly installed on the outer edge of the mounting seat 2, and one end of the regulating member 5 penetrates through the wax melting box 3. At the bottom of the mounting seat 2, a bottom shell 4 with a honeycomb-shaped outer edge is fixedly installed. At the bottom of the inner wall of the bottom shell 4, a thermal-sensitive component 15 is fixedly installed. The mounting seat 2 is a hollow ring-shaped insulating structure. Inside the hollow part of the mounting seat 2, a limiting block 17 and a power connection tube 18 are respectively fixedly installed. At one end of the power connection tube 18, there is an insulating sliding group 19. Inside the inner wall of the insulating sliding group 19, a tension spring 14 is fixedly installed through the power connection tube 18. The end of the tension spring 14 away from the insulating sliding group 19 is fixedly installed on the inner wall of the inner ring of the mounting seat 2. The end of the insulating sliding group 19 close to the power connection tube 18 is inserted into the power connection tube 18, and a current conducting sheet is connected inside the power connection tube 18;

[0033] A camera, which includes a top plate 8. At the bottom of the top plate 8, a housing 9 is fixedly installed. Inside the housing 9, a fixed control component 10 is provided. After the fixed control component 10 is energized, it controls a rotating rod 12. At the bottom of the rotating rod 12, there is a smoke recognition head 13. A sliding groove 11 is opened on the side of the housing 9. Inside the inner wall of the sliding groove 11, a fixed track active control component 23 for determining the rotation direction of the fixed track smoke recognition head 13 is slidably connected;

[0034] A parallel circuit, which connects the temperature sensor probe and the camera to the power supply. Resistors are provided at both ends of the parallel circuit connected to the camera. Another parallel circuit of the temperature sensor probe is connected to the circuit breaker at the power supply.

[0035] Among them; at both ends of the top of the thermal-sensitive component 15, there are connection rods 16. And the temperature sensor probe is connected to the power supply of the camera through the connection rods 16 and in parallel. When the thermal-sensitive component 15 is heated, the resistance inside it will continuously increase. After the resistance reaches the threshold value, it will directly exceed the resistance set at both ends of the camera, and then the current will enter the camera, enabling it to reach the startup threshold. After the camera reaches the temperature rise area under the control of the fixed control component 10, it will take a snapshot and upload it due to the fixed track active control component 23 to further confirm whether the high temperature is caused by a fire.

[0036] Among them; the upward view of the cross-section of the wax melting box 3 is an L-shaped figure. The overall shape of the regulating part 5 is a semi-circular arc-shaped strip. The inner wall of the regulating part 5 is provided with a connecting block, which penetrates through the outer wall of the mounting seat 2 and is fixedly installed with the outer wall of the insulating sliding group 19. The outer edge of the regulating part 5 is fixedly installed with a wax pressing block 7 and a dialing block 6 respectively. The length of the wax pressing block 7 corresponds to the distance from the inner wall of the wax melting box 3 closest to the outer edge of the regulating part 5. The distance between the dialing block 6 and the wax pressing block 7 is one-fourth of the side length of the outer edge of the mounting seat 2. And the distance between the wax pressing block 7 and the deepest part of the inner wall of the wax melting box 3 corresponds to the distance between the insulating sliding group 19 and the power connection tube 18. By inserting a wax rod into the wax melting box 3, when the wax pressing block 7 is blocked by the wax rod, the regulating part 5 can pull the insulating sliding group 19 to ensure that the insulating sliding group 19 does not contact the deep part of the inner wall of the power connection tube 18. When the wax rod is melted due to too high temperature, the insulating sliding group 19 can immediately contact the power connection tube 18, thereby controlling the circuit breaker to trip.

[0037] Among them; the insulating sliding group 19 includes a slider 191. A pulley 192 is arranged on the inner wall of the slider 191. The number of pulleys 192 is two. And a pull rod 193 is arranged between the two pulleys 192. The pull rod 193 is fixedly connected to the center of the inner wall of the slider 191. One end of the pull rod 193 away from the pulley 192 penetrates into the inner ring of the mounting seat 2 and is fixedly installed with one end of a tension spring 14. One end of the slider 191 close to the power connection tube 18 is provided with a probe rod 194. A second contact piece 22 is fixedly installed at one end of the probe rod 194 that penetrates into the power connection tube 18. The inner walls of the slider 191 and the probe rod 194 are inlaid with a contact core 195. One end of the contact core 195 is connected to the second contact piece 22, and the other end of the contact core 195 is connected to a wire. Adding the pulley 192 makes the slider 191 slide more smoothly under the pulling of the tension spring 14, thereby improving the agility of the insulating sliding group 19 to control the current short circuit after the wax rod is melted.

[0038] Among them; an arc-shaped groove 20 is opened at one end of the power connection tube 18 close to the insulating sliding group 19. The cross-sectional shape of the inner wall of the arc-shaped groove 20 corresponds to one end of the insulating sliding group 19 close to the power connection tube 18. The deepest part of the inner wall of the arc-shaped groove 20 is fixedly installed with a first contact piece 21. The side of the first contact piece 21 is connected to a wire penetrating through the power connection tube 18. By using the insertion of the arc-shaped groove 20 and one end of the insulating sliding group 19, the first contact piece 21 and the second contact piece 22 can be internally protected to avoid the leakage of current. At the same time, it can also ensure that the contact between the first contact piece 21 and the second contact piece 22 is not affected by dust.

[0039] Among them, the fixed control component 10 includes a motor 101. The motor 101 is fixedly installed on the side surface of the housing 9. The output shaft of the motor 101 penetrates through the housing 9 and is fixedly installed with a worm 102. A one-way bearing 103 is engaged on the outer edge of the worm 102. The inner ring of the one-way bearing 103 is made of a conductive metal material. The center of the one-way bearing 103 is fixedly sleeved on the surface of the rotating rod 12. There are two fixed control components 10, and the two fixed control components 10 are arranged in sections on the housing 9. The rotation directions of the one-way bearings 103 in the two fixed control components 10 are opposite. When the one-way bearing 103 rotates forward, it can drive the rotating rod 12 to rotate. When it rotates in the reverse direction, it will idle, ensuring that the rotating rod 12 can rotate left and right to search for the direction of the temperature rise. The fixed control component 10 receives the current transmitted after the resistance of the temperature sensing probe increases, so that the fixed control component 10 can immediately start driving the smoke recognition head 13 to rotate and capture the image of the temperature rise in time.

[0040] Among them, a contact block 24 is arranged on the inner ring of the one-way bearing 103. The position of the contact block 24 corresponds to the position of the fixed rail active control component 23. The contact block 24 is made of a conductive material. A series circuit is formed by the contact between the contact block 24 and the fixed rail active control component 23, thereby controlling the capture direction of the smoke recognition head 13 and ensuring the accuracy of fire recognition.

[0041] Among them, the fixed rail active control component 23 includes a slider 231. The slider 231 is made of an insulating material and has a hollow T-shaped structure. A fastening nut 232 is threadedly connected to the surface of the outer end of the slider 231. An insulating box 233 is fixedly installed at the outer end of the slider 231. A conductive rod 234 is slidably connected to the inner wall of the slider 231. One end of the conductive rod 234 is fixedly installed with a power-on block 237. The other end of the conductive rod 234 penetrates through the insulating box 233. Both the conductive rod 234 and the power-on block 237 are made of conductive materials. A baffle 235 is fixedly sleeved on the surface of the conductive rod 234. A spring 236 is arranged on one side of the baffle 235. Both the baffle 235 and the spring 236 are located inside the insulating box 233. The spring 236 pushes the baffle 235 by elastic pressure, so that the conductive rod 234 always drives the power-on block 237 to extend into the housing 9, facilitating contact with the contact block 24 to form a series circuit after the fixed control component 10 rotates, and then turning on the camera to capture the image.

[0042] Working principle: First, confirm the installation positions of the temperature sensors according to the arrangement of the cabin drawings. Subsequently, install the cameras according to the field of view conditions so that the cameras can cover all the temperature sensors connected to them within their field of view. Then, adjust the position of the fixed-rail active control component 23 so that the end of the fixed-rail active control component 23 points to the temperature sensor. Next, connect the temperature sensors connected to the cameras to the fixed control components 10 at different levels respectively to control the turning of the smoke recognition heads 13. When the temperature received by the thermal component 15 in the temperature sensor is too high, it will directly conduct the current to the camera, causing the camera to start running. Subsequently, when the camera rotates towards the place where the temperature rises, the fixed-rail active control component 23 just contacts the contact block 24, controlling the smoke recognition head 13 to take a snapshot, thereby confirming the reason for the temperature rise. When the temperature sensor is burned by the flame, the wax rod located inside the wax melting box 3 will quickly melt, causing the first contact piece 21 to contact the second contact piece 22, thereby tripping the circuit breaker to cut off the power supply, avoiding the damaged wire from causing the cabin to conduct electricity and ensuring the safety of the fire extinguishing personnel.

[0043] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Fire detection and video camera device inside the cargo hold of a container ship, characterized in that, Including: A temperature sensing probe, the temperature sensing probe includes a mounting plate (1), a mounting seat (2) is arranged at the bottom of the mounting plate (1), a regulating member (5) is slidably connected to the outer edge of the mounting seat (2), a semi-enclosed wax melting box (3) is fixedly installed on the outer edge of the mounting seat (2), and one end of the regulating member (5) penetrates through the wax melting box (3). A bottom shell (4) with a honeycomb-shaped outer edge is fixedly installed at the bottom of the mounting seat (2), a thermal sensitive component (15) is fixedly installed at the bottom of the inner wall of the bottom shell (4), the mounting seat (2) is a hollow ring-shaped insulating structure, a limiting block (17) and a power connection pipe (18) are respectively fixedly installed on the inner wall of the hollow part of the mounting seat (2), an insulating sliding group (19) is arranged at one end of the power connection pipe (18), a tension spring (14) penetrates through the inner wall of the insulating sliding group (19) and is fixedly installed on the inner wall of the inner ring of the mounting seat (2) at the end far away from the insulating sliding group (19), one end of the insulating sliding group (19) close to the power connection pipe (18) is inserted into the power connection pipe (18), and a current conducting sheet is connected in the power connection pipe (18). A camera, the camera includes a top plate (8), a housing (9) is fixedly installed at the bottom of the top plate (8), a fixed control component (10) is arranged inside the housing (9), a rotating rod (12) is controlled after the fixed control component (10) is powered on, a smoke recognition head (13) is arranged at the bottom of the rotating rod (12), a sliding groove (11) is opened on the side surface of the housing (9), and a fixed rail active control component (23) for fixing the rotation direction of the smoke recognition head (13) is slidably connected to the inner wall of the sliding groove (11). A parallel circuit, the parallel circuit connects the temperature sensing probe and the camera to a power supply, resistors are arranged at both ends of the camera connected to the parallel circuit, and another set of parallel circuit of the temperature sensing probe is connected to a circuit breaker at the power supply.

2. The fire detection and camera device in the cargo hold of the box ship according to claim 1, characterized in that, Both ends of the top of the thermal sensitive component (15) are provided with connecting rods (16), and the temperature sensing probe is connected to a wire through the connecting rods (16) and is connected in parallel with the power supply of the camera.

3. The fire detection and camera device in the cargo hold of the container ship according to claim 1, characterized in that, The cross-sectional elevation view of the wax melting box (3) is an L-shaped figure, the overall shape of the regulating member (5) is a semi-circular arc-shaped strip, a connecting block is arranged on the inner wall of the regulating member (5), and penetrates through the outer wall of the mounting seat (2) and is fixedly installed on the outer wall of the insulating sliding group (19). A wax pressing block (7) and a dialing block (6) are respectively fixedly installed on the outer edge of the regulating member (5). The length of the wax pressing block (7) corresponds to the distance between the inner wall of the wax melting box (3) closest to the outer edge of the regulating member (5). The distance between the dialing block (6) and the wax pressing block (7) is one-fourth of the side length of the outer edge of the mounting seat (2), and the distance between the wax pressing block (7) and the deepest part of the inner wall of the wax melting box (3) corresponds to the distance between the insulating sliding group (19) and the power connection pipe (18).

4. The fire detection and camera device in the cargo hold of the container ship according to claim 1, characterized in that The insulating sliding group (19) includes a slider (191). A pulley (192) is arranged at the inner wall of the slider (191). The number of the pulleys (192) is two, and a pull rod (193) is arranged between the two pulleys (192). The pull rod (193) is fixedly connected to the center of the inner wall of the slider (191). One end of the pull rod (193) away from the pulley (192) penetrates into the inner ring of the mounting seat (2) and is fixedly installed with one end of a tension spring (14). One end of the slider (191) close to the power connection tube (18) is provided with a probe rod (194). A second contact piece (22) is fixedly installed at one end of the probe rod (194) that penetrates into the power connection tube (18). The inner walls of the slider (191) and the probe rod (194) are inlaid with a contact core (195). One end of the contact core (195) is connected to the second contact piece (22), and the other end of the contact core (195) is connected to a wire.

5. The fire detection and camera device in the cargo hold of the container ship according to claim 1, characterized in that An arc-shaped groove (20) is opened at one end of the power connection tube (18) close to the insulating sliding group (19). The cross-sectional shape of the inner wall of the arc-shaped groove (20) corresponds to one end of the insulating sliding group (19) close to the power connection tube (18). A first contact piece (21) is fixedly installed at the deepest part of the inner wall of the arc-shaped groove (20). The side of the first contact piece (21) is connected to a wire penetrating through the power connection tube (18).

6. The fire detection and camera device in the cargo hold of the container ship according to claim 1, characterized in that, The fixed control component (10) includes a motor (101). The motor (101) is fixedly installed on the side of the outer shell (9). The output shaft of the motor (101) penetrates through the outer shell (9) and is fixedly installed with a worm (102). A one-way bearing (103) is engaged with the outer edge of the worm (102). The inner ring of the one-way bearing (103) is made of a conductive metal material. The center of the one-way bearing (103) is fixedly sleeved on the surface of the rotating rod (12). The number of the fixed control components (10) is two, and the two fixed control components (10) are arranged on the outer shell (9) in sections. The rotating directions of the one-way bearings (103) in the two fixed control components (10) are opposite.

7. The fire detection and camera device in the cargo hold of the box ship according to claim 6, characterized in that, A contact block (24) is arranged on the inner ring of the one-way bearing (103). The position of the contact block (24) corresponds to the position of the fixed rail active control component (23), and the contact block (24) is made of a conductive material.

8. The fire detection and imaging device in the cargo hold of the box ship according to claim 1, characterized in that The fixed-rail active control component (23) includes a sliding member (231). The sliding member (231) is made of insulating material and has a hollow T-shaped structure. A fastening nut (232) is threadedly connected to the surface of one end of the sliding member (231) close to the outside. An insulating box (233) is fixedly installed at one end of the sliding member (231) close to the outside. A conductive rod (234) is slidably connected to the inner wall of the sliding member (231). One end of the conductive rod (234) is fixedly installed with an energizing block (237). The other end of the conductive rod (234) penetrates through the insulating box (233), and both the conductive rod (234) and the energizing block (237) are made of conductive materials. A baffle (235) is fixedly sleeved on the surface of the conductive rod (234). A spring (236) is arranged on one side of the baffle (235). Both the baffle (235) and the spring (236) are located inside the insulating box (233).

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