CN118172880A - Fire safety automatic alarm device - Google Patents

Abstract

The invention discloses a fire safety automatic alarm device, which comprises a main body assembly, wherein the main body assembly comprises an alarm, a fixed column and a mounting plate, the fixed column is fixed at the top of the alarm, and the mounting plate is fixed at the top end of the fixed column; the protection component is arranged on the alarm and comprises a protection piece, a plugging piece, a rotating piece, a triggering piece and a locking piece, wherein the protection piece is positioned on the outer side of the alarm, the plugging piece is arranged in the protection piece, the rotating piece is positioned on one side of the protection piece, the triggering piece is arranged at the top of the protection piece, and the locking piece is positioned on the triggering piece. The invention has the beneficial effects that: through the setting of protection component, when the position temperature that the alarm was located is too high, protection component just can outwards pop out this moment to wrap up the alarm in, with this protection to the alarm, with this condition that avoids the alarm to receive the influence of high temperature can take place to damage.

Description

Fire safety automatic alarm device

Technical Field

The invention relates to the technical field of fire alarm, in particular to a fire safety automatic alarm device.

Background

The fire-fighting automatic alarm device is used for monitoring fire and automatically giving out an alarm when the fire occurs, is one of the most important means for preventing the fire, and has the functions of being used for detecting a great amount of smoke to generate an alarm when the fire is caused, the fire-fighting automatic alarm device can realize remote monitoring and control functions through an Internet platform, when the fire-fighting automatic alarm device detects fire, smoke or other dangerous signals, alarm information can be sent to related management staff in real time through the Internet platform, meanwhile, the management staff can monitor alarm conditions in real time through the Internet platform and remotely control related equipment to carry out emergency treatment, the fire-fighting automatic alarm device can transmit detected data to a cloud server for storage and analysis through the Internet platform, related data can be uploaded to the Internet platform in real time, so that management staff can conveniently check historical data and trend analysis at any time, a reference basis is provided for fire-fighting safety management, the Internet platform can carry out centralized management and monitoring on a plurality of fire-fighting automatic alarm devices, management efficiency and response speed are improved, and more intelligent early warning and emergency treatment schemes can be provided through data analysis and artificial intelligence.

When a fire disaster occurs and the fire disaster is not extinguished in time, the indoor temperature continuously rises, most of alarm devices in the prior art lack protection to the indoor temperature, and when the indoor temperature is too high, a circuit or a sensor of the alarm device is damaged due to the high temperature, so that the service life of the circuit or the sensor is shortened.

Disclosure of Invention

This section is intended to outline some aspects of embodiments of the application and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description of the application and in the title of the application, which may not be used to limit the scope of the application.

The present invention has been made in view of the above-mentioned and/or existing problems with fire safety automatic alarm devices.

Therefore, the problem to be solved by the invention is that most alarm devices in the prior art lack protection to the alarm devices, and when the indoor temperature is too high, the circuit or the sensor of the alarm device is damaged due to the high temperature, so that the service life of the alarm device is reduced.

In order to solve the technical problems, the invention provides the following technical scheme: the automatic fire safety alarm device comprises a main body assembly, wherein the main body assembly comprises an alarm, a fixed column and a mounting plate, the fixed column is fixed at the top of the alarm, and the mounting plate is fixed at the top end of the fixed column;

The protection component is arranged on the alarm and comprises a protection piece, a plugging piece, a rotating piece, a triggering piece and a locking piece, wherein the protection piece is positioned on the outer side of the alarm, the plugging piece is arranged in the protection piece, the rotating piece is positioned on one side of the protection piece, the triggering piece is arranged at the top of the protection piece, and the locking piece is positioned on the triggering piece.

As a preferable scheme of the automatic fire safety alarm device, the invention comprises the following steps: the protection piece comprises a fixing plate, a protection plate, a bottom plate and a connecting block, wherein the fixing plate is fixed on the outer side of the fixing column, the protection plate is arranged on the outer side of the fixing plate, the bottom plate is fixed on the bottom of the protection plate, the connecting block is fixed on one side of the protection plate, a groove is formed in the fixing plate, and the connecting block is rotationally connected with the groove through a rotating shaft.

As a preferable scheme of the automatic fire safety alarm device, the invention comprises the following steps: and a heat insulation cavity is formed in the protection plate.

As a preferable scheme of the automatic fire safety alarm device, the invention comprises the following steps: the plugging piece comprises a stop block, a supporting block, a first spring and a sealing block, wherein the stop block is positioned in the heat insulation cavity, the supporting block is fixed on one side of the stop block, two ends of the first spring are respectively fixed with the supporting block and the heat insulation cavity, the sealing block is fixed on one side of the stop block, and ventilation holes are formed in one side of the protection plate.

As a preferable scheme of the automatic fire safety alarm device, the invention comprises the following steps: the blocking piece further comprises a connecting column, and one end of the connecting column is fixed with the stop block.

As a preferable scheme of the automatic fire safety alarm device, the invention comprises the following steps: the rotating piece comprises a moving rod, a sliding rail, a fixed shaft and a supporting frame, wherein the moving rod is positioned at the bottom of the protection plate, the sliding rail is fixed at the bottom of the protection plate, the fixed shaft is fixed at one end of the moving rod, and the supporting frame is fixed at the bottom of the fixed plate.

As a preferable scheme of the automatic fire safety alarm device, the invention comprises the following steps: the rotating piece further comprises a rotating disc, a guide shaft, a rotating sleeve and a connecting rod, wherein the rotating disc is located on the outer side of the fixed column, one end of the guide shaft is fixed to the moving rod, the rotating sleeve is rotationally connected to the fixed column, two ends of the connecting rod are respectively fixed to the rotating disc and the rotating sleeve, a guide groove is formed in the rotating disc, and the guide shaft slides in the guide groove.

As a preferable scheme of the automatic fire safety alarm device, the invention comprises the following steps: the trigger piece comprises a heat conduction sleeve, an expansion block, a movable rod, a rotating rod and a movable sleeve, wherein the heat conduction sleeve is fixed at the top of the fixed plate, the expansion block is positioned in the heat conduction sleeve, the movable rod is inserted into the heat conduction sleeve, one end of the rotating rod is fixed with the rotating sleeve, and the movable sleeve is sleeved outside the rotating rod.

As a preferable scheme of the automatic fire safety alarm device, the invention comprises the following steps: the trigger piece further comprises a connecting plate and a second spring, wherein the connecting plate is fixed at one end of the movable rod, and two ends of the second spring are respectively fixed with the connecting plate and the inner wall of the heat conducting sleeve.

As a preferable scheme of the automatic fire safety alarm device, the invention comprises the following steps: the locking piece comprises a positioning frame, a limiting column, a positioning plate and a third spring, wherein the positioning frame is fixed at the top of the fixing plate, the limiting column is inserted into the positioning frame, the positioning plate is fixed at the top end of the limiting column, two ends of the third spring are respectively fixed with the positioning plate and the positioning frame, and a limiting hole corresponding to the limiting column is formed in the movable rod.

The invention has the beneficial effects that: through the setting of protection component, when the position temperature that the alarm was located is too high, protection component just can outwards pop out this moment to wrap up the alarm in, with this protection to the alarm, with this condition that avoids the alarm to receive the influence of high temperature can take place to damage.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:

FIG. 1 is an overall view of a fire safety automatic alarm device.

FIG. 2 is a block diagram of a fixing plate of the fire safety automatic alarm device.

Fig. 3 is a partially enlarged structural view of the automatic fire safety alarm device at a position a in fig. 2.

Fig. 4 is a bottom view structural diagram of a fixing plate of the fire safety automatic alarm device.

Fig. 5 is a partially enlarged structural view of the automatic fire safety alarm device at B in fig. 4.

FIG. 6 is a cross-sectional view of a heat conducting sleeve of the automatic fire safety alarm device.

Fig. 7 is a sectional view of a fixing column of the fire safety automatic alarm device.

Fig. 8 is a sectional view of a protection plate of the fire safety automatic alarm device.

Fig. 9 is a partially enlarged structural view of the fire safety automatic alarm device at C in fig. 8.

Detailed Description

In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present invention is not limited to the specific embodiments disclosed below.

Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic can be included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.

Example 1

Referring to fig. 1 to 9, a fire safety automatic alarm device according to a first embodiment of the present invention is provided, which includes a main body assembly 100 and a protection assembly 200, and the service life of an alarm 101 can be increased by the protection assembly 200.

The main body assembly 100 comprises an alarm 101, a fixed column 102 and a mounting plate 103, wherein the fixed column 102 is fixed on the top of the alarm 101, and the mounting plate 103 is fixed on the top end of the fixed column 102.

The mounting plate 103 is provided with mounting holes, and the mounting holes are matched with bolts to fix the alarm 101, so that the alarm 101 can be mounted at a designated position, when a large amount of smoke appears, the alarm 101 can trigger an alarm, the scheme is not repeated, and a person skilled in the art can clearly know the working principle.

The protection component 200 is arranged on the alarm 101 and comprises a protection piece 201, a blocking piece 202, a rotating piece 203, a triggering piece 204 and a locking piece 205, wherein the protection piece 201 is arranged on the outer side of the alarm 101, the blocking piece 202 is arranged in the protection piece 201, the rotating piece 203 is arranged on one side of the protection piece 201, the triggering piece 204 is arranged on the top of the protection piece 201, and the locking piece 205 is arranged on the triggering piece 204.

Through the setting of guard 201, when guard 201 is opening, can shelter from alarm 101 top, and then it drops to alarm 101 top to avoid the wall top to have the dust, can cause the jam to alarm 101, thereby influence alarm 101 to the response of smog, when the position temperature that alarm 101 was located is higher, guard 201 just can draw in downwards this moment, and wrap up alarm 101 in, make alarm 101 be in a space isolated with the external world, the air around the multiplicable alarm 101 flows simultaneously, make the high temperature air around the alarm 101 discharge this space, thereby can make alarm 101 surrounding temperature drop, protect alarm 101 through guard 201 this moment, and keep apart with external high temperature, so that alright avoid alarm 101 can take place the condition of damage under the high temperature condition.

The inside shutoff of guard 201 is carried out through shutoff piece 202, avoid when need not protect, guard 201 inside can take place the condition that gas leaked, through the setting of rotating piece 203, be used for driving guard 201 and draw in, thereby can make guard 201 wrap up alarm 101 in, through trigger 204 location setting, be used for responding to the temperature of alarm 101 place, when the temperature around the alarm 101 is too high, alright drive rotating piece 203 through trigger 204 rotates, through the setting of locking piece 205, when guard 201 wraps up alarm 101 completely in, alright lock it in current state through locking piece 205, in order to avoid in the protection process to alarm 101, guard 201 can open because of the external force emergence, and then the condition that leads to alarm 101 to expose outside.

Example 2

Referring to fig. 1-9, a second embodiment of the present invention is based on the previous embodiment.

Specifically, the protection piece 201 includes a fixing plate 201a, a protection plate 201b, a bottom plate 201c and a connection block 201d, the fixing plate 201a is fixed on the outer side of the fixing column 102, the protection plate 201b is arranged on the outer side of the fixing plate 201a, the bottom plate 201c is fixed on the bottom of the protection plate 201b, the connection block 201d is fixed on one side of the protection plate 201b, a groove 201a-1 is formed in the fixing plate 201a, and the connection block 201d is rotationally connected with the groove 201a-1 through a rotating shaft.

The number of the protection plates 201b is multiple, the protection plates 201b are annularly and uniformly distributed on the outer side of the fixed plate 201a, the protection plates 201b are arc-shaped, and the bottom plate 201c is fan-shaped.

When a plurality of guard plates 201b are in a horizontal state, the upper part of the alarm 101 can be shielded, so that dust on the wall top is prevented from falling to the top of the alarm 101, and the alarm 101 can be blocked, thereby affecting the induction of the alarm 101 to smoke.

When the protection plates 201b rotate downwards to be in a vertical state, the protection plates 201b are combined into an annular sleeve, and meanwhile, the bottom plates 201c are combined into a flat plate and wrap the alarm 101, so that the alarm 101 can be located in a space isolated from the outside and can be isolated from the outside at high temperature, the alarm 101 can be protected, and the situation that the alarm 101 is damaged due to the outside height is avoided.

Specifically, the shielding plate 201b is provided with a heat insulation chamber 201b-1.

By providing the heat insulating chamber 201b-1, the heat insulating effect of the shielding plate 201b to the outside can be improved, and thus the protective effect of the alarm 101 can be improved.

The heat insulation chamber 201b-1 is filled with gas, when the protection plate 201b rotates downwards and wraps the alarm 101, the gas in the protection plate 201b is discharged outwards, and blows air around the alarm 101 to accelerate to flow, so that high-temperature air around the alarm 101 is discharged to the inner sides of the protection plates 201b, the temperature around the alarm 101 can be lowered, the situation that the protection plate 201b wraps the high-temperature air around the alarm 101 when wrapping the alarm 101 is avoided, the alarm 101 is always in a high-temperature environment, and the protection effect on the alarm 101 is reduced.

Specifically, the blocking piece 202 includes a block 202a, a supporting block 202b, a first spring 202c and a sealing block 202d, the block 202a is located in the heat insulation chamber 201b-1, the supporting block 202b is fixed on one side of the block 202a, two ends of the first spring 202c are respectively fixed with the supporting block 202b and the heat insulation chamber 201b-1, the sealing block 202d is fixed on one side of the block 202a, and ventilation holes 201b-2 are formed on one side of the protection plate 201 b.

The number of the blocking pieces 202 corresponds to that of the protection plate 201b, the blocking pieces are used for exhausting gas in the protection plate 201b through the ventilation holes 201b-2, the sealing blocks 202d are clamped in the ventilation holes 201b-2, the ventilation holes 201b-2 are blocked through the matching of the sealing blocks 202d and the check blocks 202a, so that the situation that the gas can leak outwards through the ventilation holes 201b-2 when the protection plate 201b is in a horizontal state is avoided, the first springs 202c are used for applying tension to the supporting blocks 202b, and the check blocks 202a are driven by the supporting blocks 202b to be tightly attached to the heat insulation chamber 201b-1, and the situation that the connection between the sealing blocks 202d and the ventilation holes 201b-2 is loose is avoided.

Specifically, the blocking member 202 further includes a connecting post 202e, and one end of the connecting post 202e is fixed to the stopper 202 a.

One end of the connecting column 202e penetrates to the outer side of the protection plate 201b and is movably connected with the protection plate 201b, the end part of the connecting column 202e is inclined, when the protection plate 201b rotates downwards to be in a vertical state and two adjacent protection plates 201b are contacted, the inclined surface of the end part of the connecting column 202e is contacted with the adjacent protection plates 201b and extruded by the adjacent protection plates 201b to move, so that the connecting column 202e can drive the protection plates 201b and the sealing block 202d to move, the sealing block 202d is separated from the ventilation holes 201b-2, and at the moment, gas in the protection plates 201b can leak outwards.

Specifically, the rotating member 203 includes a moving rod 203a, a sliding rail 203b, a fixed shaft 203c, and a supporting frame 203d, the moving rod 203a is located at the bottom of the protection plate 201b, the sliding rail 203b is fixed at the bottom of the protection plate 201b, the fixed shaft 203c is fixed at one end of the moving rod 203a, and the supporting frame 203d is fixed at the bottom of the fixed plate 201 a.

The number of the rotating parts 203 corresponds to that of the protection plates 201b, the fixed shafts 203c are movably connected with the inside of the sliding rails 203b, the movable rods 203a are movably connected with the inside of the supporting frame 203d, when the movable rods 203a move, the fixed shafts 203c are driven to slide in the sliding rails 203b, when the fixed shafts 203c contact with the inner walls of the sliding rails 203b, the sliding rails 203b are pulled to move, and the protection plates 201b are driven to rotate downwards through the sliding rails 203b, so that the protection plates 201b can wrap the alarm 101.

Example 3

Referring to fig. 1-9, a third embodiment of the present invention is based on the first two embodiments.

Specifically, the rotating member 203 further includes a rotating disc 203e, a guiding shaft 203f, a rotating sleeve 203g and a connecting rod 203h, the rotating disc 203e is located outside the fixed column 102, one end of the guiding shaft 203f is fixed with the moving rod 203a, the rotating sleeve 203g is rotationally connected in the fixed column 102, two ends of the connecting rod 203h are respectively fixed with the rotating disc 203e and the rotating sleeve 203g, a guiding groove 203e-1 is formed in the rotating disc 203e, and the guiding shaft 203f slides in the guiding groove 203 e-1.

The fixed column 102 is provided with a sliding groove, the connecting rod 203h is movably connected with the inside of the sliding groove, the guide groove 203e-1 is arc-shaped, one end of the guide groove is close to the outer side of the rotating disc 203e, and the other end of the guide groove is close to the inner side of the rotating disc 203 e.

When the rotating sleeve 203g rotates, the rotating disc 203e is driven to rotate by the connecting rod 203h, and when the rotating disc 203e rotates, the guide shaft 203f slides in the guide groove 203e-1, and the moving rod 203a is driven to move by the cooperation of the guide shaft 203f and the guide groove 203e-1, so that the moving rod 203a drives the fixed shaft 203c to slide in the slide rail 203 b.

Specifically, the trigger piece 204 includes a heat conducting sleeve 204a, an expansion block 204b, a movable rod 204c, a rotating rod 204d and a movable sleeve 204e, wherein the heat conducting sleeve 204a is fixed on the top of the fixed plate 201a, the expansion block 204b is located in the heat conducting sleeve 204a, the movable rod 204c is inserted into the heat conducting sleeve 204a, one end of the rotating rod 204d is fixed with the rotating sleeve 203g, and the movable sleeve 204e is sleeved on the outer side of the rotating rod 204 d.

The heat conducting sleeve 204a has the effect of heat conduction, the expansion block 204b has the characteristic of heat expansion and cold contraction, the fixed column 102 is provided with a movable groove, the rotating rod 204d is movably connected with the movable groove, and one end of the movable rod 204c is hinged with the movable sleeve 204e through a hinged plate.

When the temperature around the alarm 101 increases, the heat conducting sleeve 204a will transfer heat to the expansion block 204b, the expansion block 204b expands when heated, and pushes the movable rod 204c to move, and when the movable rod 204c moves, the movable sleeve 204e cooperates with the movable sleeve 204e to drive the rotating sleeve 203g to move, so that the rotating sleeve 204d can drive the rotating sleeve 203g to rotate.

Specifically, the trigger piece 204 further includes a connection plate 204f and a second spring 204g, the connection plate 204f is fixed at one end of the movable rod 204c, and two ends of the second spring 204g are respectively fixed with the connection plate 204f and the inner wall of the heat conducting sleeve 204 a.

One side of the connecting plate 204f is in contact with the expansion block 204b, and the second spring 204g is used for applying thrust to the connecting plate 204f, so that the connecting plate 204f is always clung to the expansion block 204b, and the situation that the movable rod 204c is moved by external force is avoided.

Specifically, the locking piece 205 includes a positioning frame 205a, a limiting post 205b, a positioning plate 205c and a third spring 205d, the positioning frame 205a is fixed on the top of the fixed plate 201a, the limiting post 205b is inserted into the positioning frame 205a, the positioning plate 205c is fixed on the top of the limiting post 205b, two ends of the third spring 205d are respectively fixed with the positioning plate 205c and the positioning frame 205a, and a limiting hole 204c-1 corresponding to the limiting post 205b is formed on the movable rod 204 c.

The movable rod 204c is movably connected with the positioning frame 205a, when the movable rod 204c pushes the rotating rod 204d to rotate and the protection plate 201b wraps the alarm 101, the limiting column 205b is overlapped with the limiting hole 204c-1, a pulling force is applied to the positioning plate 205c through the third spring 205d, the limiting column 205b is driven to move downwards through the positioning plate 205c, the limiting column 205b is clamped with the limiting hole 204c-1, the movable rod 204c can be locked through the cooperation of the limiting column 205b and the limiting hole 204c, the movable rod 204c cannot move, the protection plate 201b can be locked in the current state, the protection plate 201b continuously protects the alarm 101, the situation that the protection plate 201b is loosened due to the influence of external force in the protection process, and the alarm 101 is exposed is further caused.

When a large amount of smoke appears, the alarm 101 triggers an alarm, when the temperature around the alarm 101 rises, at the moment, the heat conduction sleeve 204a can transfer heat to the expansion block 204b, the expansion block 204b is heated to expand and push the movable rod 204c to move, when the movable rod 204c moves, the movable rod 204c is driven to move through the cooperation of the movable sleeve 204e, the rotating sleeve 203g can be driven to rotate through the rotating rod 204d, the rotating disc 203e can be driven to rotate through the connecting rod 203h when the rotating sleeve 203g rotates, the guide shaft 203f can slide in the guide groove 203e-1 when the rotating disc 203e rotates, the movable rod 203a can be driven to move through the cooperation of the guide shaft 203f and the movable rod, the fixed shaft 203c can be driven to slide in the slide rail 203b when the movable rod 203a moves, and the fixed shaft 203c can pull the slide rail 203b to move and the protection plate 201b to rotate downwards through the slide rail 203b when the fixed shaft 203c contacts with the inner wall of the slide rail 203 b.

When the protection plates 201b rotate downwards to be in a vertical state, the protection plates 201b are combined into an annular sleeve, and meanwhile, the bottom plates 201c are combined into a flat plate and wrap the alarm 101, so that the alarm 101 can be located in a space isolated from the outside and can be isolated from the outside at high temperature, the alarm 101 can be protected, and the situation that the alarm 101 is damaged due to the outside height is avoided.

Meanwhile, when the protection plates 201b rotate downwards to be in a vertical state and two adjacent protection plates 201b are contacted, the inclined surfaces at the end parts of the connecting columns 202e are contacted with the adjacent protection plates 201b and are extruded by the connecting columns to move, so that the connecting columns 202e drive the protection plates 201b and the sealing blocks 202d to move, the sealing blocks 202d are separated from the ventilation holes 201b-2, at the moment, air in the protection plates 201b leaks outwards, air around the alarm 101 is blown to accelerate to flow, high-temperature air around the alarm 101 is discharged out of the inner sides of the protection plates 201b, the temperature around the alarm 101 can be reduced, and the situation that the surrounding high-temperature air is wrapped by the protection plates 201b when the alarm 101 is wrapped is avoided, so that the alarm 101 is always in a high-temperature environment, and the protection effect on the alarm 101 is reduced.

It should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention may be modified or substituted without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered in the scope of the claims of the present invention.

Claims (10)

1. The utility model provides a fire safety automatic alarm device which characterized in that: comprising the steps of (a) a step of,

The main body assembly (100) comprises an alarm (101), a fixed column (102) and a mounting plate (103), wherein the fixed column (102) is fixed at the top of the alarm (101), and the mounting plate (103) is fixed at the top end of the fixed column (102);

The protection component (200) is arranged on the alarm (101), and comprises a protection piece (201), a blocking piece (202), a rotating piece (203), a triggering piece (204) and a locking piece (205), wherein the protection piece (201) is arranged on the outer side of the alarm (101), the blocking piece (202) is arranged in the protection piece (201), the rotating piece (203) is arranged on one side of the protection piece (201), the triggering piece (204) is arranged on the top of the protection piece (201), and the locking piece (205) is arranged on the triggering piece (204).

2. The fire safety automatic alarm device according to claim 1, wherein: the protection piece (201) comprises a fixing plate (201 a), a protection plate (201 b), a bottom plate (201 c) and a connecting block (201 d), wherein the fixing plate (201 a) is fixed on the outer side of the fixing column (102), the protection plate (201 b) is arranged on the outer side of the fixing plate (201 a), the bottom plate (201 c) is fixed on the bottom of the protection plate (201 b), the connecting block (201 d) is fixed on one side of the protection plate (201 b), a groove (201 a-1) is formed in the fixing plate (201 a), and the connecting block (201 d) is connected with the groove (201 a-1) in a rotating mode through a rotating shaft.

3. The fire safety automatic alarm device according to claim 2, wherein: a heat insulation cavity (201 b-1) is formed in the protection plate (201 b).

4. A fire safety automatic alarm apparatus according to claim 3, wherein: the plugging piece (202) comprises a stop block (202 a), a supporting block (202 b), a first spring (202 c) and a sealing block (202 d), wherein the stop block (202 a) is positioned in the heat insulation chamber (201 b-1), the supporting block (202 b) is fixed on one side of the stop block (202 a), two ends of the first spring (202 c) are respectively fixed with the supporting block (202 b) and the heat insulation chamber (201 b-1), the sealing block (202 d) is fixed on one side of the stop block (202 a), and an air vent (201 b-2) is formed in one side of the protection plate (201 b).

5. The fire safety automatic alarm device according to claim 4, wherein: the plugging piece (202) further comprises a connecting column (202 e), and one end of the connecting column (202 e) is fixed with the stop block (202 a).

6. The fire safety automatic alarm apparatus according to claim 4 or 5, wherein: the rotating piece (203) comprises a moving rod (203 a), a sliding rail (203 b), a fixed shaft (203 c) and a supporting frame (203 d), wherein the moving rod (203 a) is located at the bottom of the protection plate (201 b), the sliding rail (203 b) is fixed at the bottom of the protection plate (201 b), the fixed shaft (203 c) is fixed at one end of the moving rod (203 a), and the supporting frame (203 d) is fixed at the bottom of the fixed plate (201 a).

7. The fire safety automatic alarm device according to claim 6, wherein: the rotating piece (203) further comprises a rotating disc (203 e), a guide shaft (203 f), a rotating sleeve (203 g) and a connecting rod (203 h), wherein the rotating disc (203 e) is located outside the fixed column (102), one end of the guide shaft (203 f) is fixed with the moving rod (203 a), the rotating sleeve (203 g) is rotationally connected in the fixed column (102), two ends of the connecting rod (203 h) are respectively fixed with the rotating disc (203 e) and the rotating sleeve (203 g), a guide groove (203 e-1) is formed in the rotating disc (203 e), and the guide shaft (203 f) slides in the guide groove (203 e-1).

8. The fire safety automatic alarm device according to claim 7, wherein: the trigger piece (204) comprises a heat conduction sleeve (204 a), an expansion block (204 b), a movable rod (204 c), a rotating rod (204 d) and a movable sleeve (204 e), wherein the heat conduction sleeve (204 a) is fixed at the top of the fixed plate (201 a), the expansion block (204 b) is positioned in the heat conduction sleeve (204 a), the movable rod (204 c) is inserted into the heat conduction sleeve (204 a), one end of the rotating rod (204 d) is fixed with the rotating sleeve (203 g), and the movable sleeve (204 e) is sleeved outside the rotating rod (204 d).

9. The fire safety automatic alarm device according to claim 8, wherein: the trigger piece (204) further comprises a connecting plate (204 f) and a second spring (204 g), wherein the connecting plate (204 f) is fixed at one end of the movable rod (204 c), and two ends of the second spring (204 g) are respectively fixed with the connecting plate (204 f) and the inner wall of the heat conducting sleeve (204 a).

10. The fire safety automatic alarm apparatus according to claim 8 or 9, wherein: the locking piece (205) comprises a positioning frame (205 a), a limiting column (205 b), a positioning plate (205 c) and a third spring (205 d), wherein the positioning frame (205 a) is fixed at the top of the fixing plate (201 a), the limiting column (205 b) is inserted into the positioning frame (205 a), the positioning plate (205 c) is fixed at the top end of the limiting column (205 b), two ends of the third spring (205 d) are respectively fixed with the positioning plate (205 c) and the positioning frame (205 a), and a limiting hole (204 c-1) corresponding to the limiting column (205 b) is formed in the movable rod (204 c).