CN112270804A - Point type fire early warning device utilizing bimetallic strip principle - Google Patents
Point type fire early warning device utilizing bimetallic strip principle Download PDFInfo
- Publication number
- CN112270804A CN112270804A CN202011175790.9A CN202011175790A CN112270804A CN 112270804 A CN112270804 A CN 112270804A CN 202011175790 A CN202011175790 A CN 202011175790A CN 112270804 A CN112270804 A CN 112270804A
- Authority
- CN
- China
- Prior art keywords
- plate
- end cover
- movably connected
- swing joint
- bimetallic strip
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/06—Electric actuation of the alarm, e.g. using a thermally-operated switch
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/02—Mechanical actuation of the alarm, e.g. by the breaking of a wire
Abstract
The invention relates to the technical field of fire prevention, and discloses a point type fire early warning device utilizing a bimetallic strip principle, which comprises a mounting plate, wherein the interior of the mounting plate is movably connected with a cross rod, the left side of the cross rod is movably connected with a connecting plate, a fixing block is driven to be drawn close to the inner side through the cross rod, then a groove on the upper surface of an upper end cover is aligned with a groove on the lower surface of the mounting plate, then the cross rod is loosened, under the action of a return spring, the cross rod is pushed to move towards the outer side, so that a middle fixing block enters a stepped groove of the upper end cover, the upper end cover is fixed, through the bending of the bimetallic strip and the matching of a movable plate, an annular plate and a V-shaped rod, a trigger shaft is pushed to move upwards, voltage change is caused, a trigger electric signal is triggered, an alarm is sounded, the received external interference is small, the high-intensity magnetic and strong-current environment can still be used, and the stability and the safety are higher.
Description
Technical Field
The invention relates to the technical field of fire prevention, in particular to a point type fire early warning device utilizing a bimetallic strip principle.
Background
The city has the characteristics of dense buildings, concentrated population, concentrated property, more flammable and explosive materials, more sources, more points and wide range, thereby bringing more fire hazards and explosion hidden dangers.
The existing fire early warning device is complex in structure, troublesome in installation, maintenance and inspection, complex in internal structure, multiple in electronic elements, greatly influenced in strong-current strong-magnetic environment and possibly incapable of giving an alarm.
In order to solve the above problems, the inventors provide a point fire alarm device using a bimetal principle, which is convenient to mount and dismount and can be applied to a complex environment of strong magnetism and strong electricity.
Disclosure of Invention
In order to achieve the purpose, the invention provides the following technical scheme: a point type fire early warning device utilizing a bimetallic strip principle comprises a mounting plate, wherein a cross rod is movably connected inside the mounting plate, a connecting plate is movably connected on the left side of the cross rod, a fixed block is movably connected on the outer side below the connecting plate, a return spring is movably connected above the cross rod, an upper end cover is movably connected below the mounting plate, a buzzer is movably connected below the upper end cover, a capacitor plate is movably connected on the inner side of the buzzer, a fixed support is movably connected below the upper end cover, a bimetallic strip is movably connected below the fixed support, a movable plate is movably connected below the bimetallic strip, an annular plate is movably connected on the right side of the movable plate, a trigger shaft is movably connected on the inner side of the fixed support, a V-shaped rod is movably connected below the fixed support, and a clamping block is movably connected on the outer side of the trigger shaft, the outer side of the fixed support is movably connected with a lower end cover.
Preferably, the inner side of the connecting plate is movably connected with a positioning gear, and two groups of racks are arranged on the inner side of the connecting plate and are matched with the positioning gear.
Preferably, the mounting plate below and the corresponding position in top of upper end cover are seted up slottedly, and the position bilateral symmetry in groove, and the inslot is provided with fastening spring, and fastening spring is in compression state during the installation, is provided with the notch cuttype recess in the upper end cover, and the fixed block setting is in the recess.
Preferably, the capacitor plate is connected with the buzzer through a wire, and the wire of the capacitor plate is connected with a fire extinguishing device matched with the outside of the device.
Preferably, a moving block is arranged above the movable plate and on the inner side of the bimetallic strip, and the thermal expansion coefficient of the left metal in the bimetallic strip is greater than that of the right metal.
Preferably, the annular plates are provided with three groups in total and are respectively movably connected to the inner side of the movable plate and the lower part of the trigger shaft, the V-shaped rods are provided with two groups in total, one end of each V-shaped rod is slidably connected with the annular plate on the inner side of the movable plate, the other end of each V-shaped rod is slidably connected with the annular plate at the lower end of the trigger shaft, and the middle points of the V-shaped rods are hinged to the fixed support.
Preferably, the inner side of the fixed support is provided with a clamping groove, the clamping groove is movably connected with the clamping block through a spring, a positioning gear is arranged below the fixed support, and gear teeth meshed with the positioning gear are arranged on two sides of the trigger shaft.
Advantageous effects
Compared with the prior art, the invention provides a point type fire early warning device utilizing a bimetallic strip principle, which has the following beneficial effects:
1. this utilize point type conflagration early warning device of bimetallic strip principle, through pressing the horizontal pole, two connecting plates of positioning gear drive the fixed block and draw close to the inboard, the answer spring of connecting plate top is in tensile state simultaneously, then align the groove of upper end cover upper surface with the groove of mounting panel lower surface, then loosen the horizontal pole, under the effect of answer spring, the horizontal pole is promoted the lateral motion to the outside, drive connecting plate and fixed block lateral motion, wherein the fixed block enters into the notch cuttype inslot of upper end cover, fix the upper end cover, and the spring between mounting panel and the upper end cover is in compression state, because under the elastic force effect of spring, the frictional force between fixed block and the upper end cover recess has been increased, make whole device more firm.
2. This utilize point type conflagration early warning device of bimetallic strip principle, it is crooked through the bimetallic strip, promote the fly leaf and move to the inboard, cooperate through two annular slabs and V-arrangement pole, promote the trigger shaft upward movement, enter into between two electric capacity boards, arouse the voltage change, the signal of trigger signal of telecommunication, make the alarm sound, external extinguishing device through connection of electric lines starts simultaneously, begin to put out a fire, and be provided with the bleeder vent on the lower end cover, make things convenient for the bimetallic strip can in time sense abnormal temperature, in time make a reaction, the device simple structure, electronic component is few, the external interference that receives is less, can still use to strong magnetism forceful electric power environment, stability and security are higher.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the portion of the trigger shaft of FIG. 1 in accordance with the present invention;
fig. 3 is a bottom view of fig. 1 of the present invention.
In the figure: 1. mounting a plate; 2. a cross bar; 3. a connecting plate; 4. a fixed block; 5. a return spring; 6. an upper end cover; 7. a buzzer; 8. a capacitive plate; 9. fixing a bracket; 10. a bimetal; 11. a movable plate; 12. an annular plate; 13. a V-shaped rod; 14. a trigger shaft; 15. a clamping block; 16. and a lower end cover.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, a point type fire early warning device using a bimetallic strip principle comprises a mounting plate 1, a cross rod 2 is movably connected inside the mounting plate 1, two ends of the cross rod 2 are provided with press blocks, a connecting plate 3 is movably connected on the left side of the cross rod 2, a positioning gear is movably connected on the inner side of the connecting plate 3, two sets of racks are matched with the positioning gear, a fixing block 4 is movably connected on the lower outer side of the connecting plate 3, a return spring 5 is movably connected above the cross rod 2, an upper end cover 6 is movably connected below the mounting plate 1, grooves are formed in the corresponding positions above the upper end cover 6 and below the mounting plate 1, the positions of the grooves are bilaterally symmetrical, a fastening spring is arranged in each groove, the fastening spring is in a compression state during mounting, a stepped groove is formed in the upper end cover 6, the fixing block 4 is arranged inside the groove, a, the inner side of the buzzer 7 is movably connected with a capacitance plate 8, the capacitance plate 8 is connected with the buzzer 7 through an electric wire, the electric wire of the capacitance plate 8 is connected with a fire extinguishing device matched with the exterior of the device, the buzzer 7 starts alarming and is simultaneously connected with fire extinguishing equipment matched with the exterior, a fixed support 9 is movably connected below the upper end cover 6, a clamping groove is arranged on the inner side of the fixed support 9, the clamping groove is movably connected with a clamping block 15 through a spring, a positioning gear is arranged below the fixed support 9, gear teeth meshed with the positioning gear are arranged on two sides of the trigger shaft 14, a bimetallic strip 10 is movably connected below the fixed support 9, the thermal expansion coefficient of left metal in the bimetallic strip 10 is larger than that of right metal, a movable plate 11 is movably connected below the bimetallic strip 10, and a movable block is arranged above the movable plate 11 and on the inner side of the bimetallic strip 10, the right side swing joint of fly leaf 11 has annular plate 12, the inboard swing joint of fixed bolster 9 has trigger shaft 14, the below swing joint of fixed bolster 9 has V-arrangement pole 13, annular plate 12 is provided with three groups altogether, swing joint is respectively in the inboard of fly leaf 11 and the below of trigger shaft 14, V-arrangement pole 13 is provided with two sets altogether, wherein the one end of V-arrangement pole 13 and the annular plate 12 sliding connection of fly leaf 11 inboard, the other end and the annular plate 12 sliding connection of the 14 lower extreme of trigger shaft, and the midpoint hinge of V-arrangement pole 13 is on fixed bolster 9, the outside swing joint of trigger shaft 14 has fixture block 15, the outside swing joint of fixed bolster 9 has lower end cover 16, be provided with the bleeder vent on the lower end cover 16.
The working process and principle are as follows: the step of the mounting plate 1 of the device is provided with a screw hole, the mounting plate 1 is fixedly arranged at a designated position and then presses the cross rod 2 inwards, the positioning gear rotates, the two connecting plates 3 drive the fixing blocks 4 to approach towards the inner side, meanwhile, the return springs 5 above the connecting plates 3 are in a stretching state, then, the grooves on the upper surface of the upper end cover 6 are aligned with the grooves on the lower surface of the mounting plate 1, the springs in the grooves are in a compression state after being aligned, then the cross rod 2 is loosened, under the action of the return springs 5, the cross rod 2 is pushed to move towards the outer side, the connecting plates 3 and the fixing blocks 4 are driven to move towards the outer side, wherein the fixing blocks 4 enter the stepped grooves of the upper end cover 6, the upper end cover 6 is fixed, and the springs between the mounting plate 1 and the upper end cover 6 are in a compression state, and under the action, make whole device more firm, it is same, when the device need be changed the maintenance, inwards press horizontal pole 2, be the recess that fixed block 4 left upper end cover 6, under the restoring force effect of spring, take off upper end cover 6 and whole device very conveniently, be convenient for maintain and change.
When a fire disaster occurs in the effective range of the device, the temperature in the air rises, the bimetallic strip 10 is heated, because the thermal expansion coefficient of the left metal in the bimetallic strip 10 is larger than that of the right metal, when the temperature rises, the bimetallic strip 10 bends to the right side to push the movable plate 11 to move to the right side quickly, when the movable plate 11 moves to the inner side, the annular plate 12 drives the V-shaped rod 13 to rotate anticlockwise around the middle hinge point, meanwhile, the other end of the V-shaped rod 13 drives the trigger shaft 14 to move upwards through the annular plate 12, when the trigger shaft 14 moves upwards, the ejector rods at two sides push the clamping block 15 outwards, the clamping block 15 enters the clamping groove, meanwhile, the top of the trigger shaft 14 enters between the two capacitor plates 8, according to the formula of the capacitance C ═ epsilon S/4 pi kd, when the trigger block enters between the two capacitor plates 8, the dielectric constant epsilon changes, the electric capacity of electric capacity board 8 takes place the transform, arouses the voltage change, the signal of telecommunication triggers, buzzer 7 sounds the police dispatch newspaper sound this moment, the external extinguishing device through connection of electric lines starts simultaneously, begin to put out a fire, and be provided with the bleeder vent on the lower end cover 16, make things convenient for bimetallic strip 10 can in time sense abnormal temperature, in time react, the device simple structure, electronic component is few, the external interference that receives is less, still use to strong magnetic strong electric environment, the security is higher.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A point type fire early warning device using a bimetallic strip principle comprises a mounting plate (1), and is characterized in that: the inside swing joint of mounting panel (1) has horizontal pole (2), the left side swing joint of horizontal pole (2) has connecting plate (3), the below outside swing joint of connecting plate (3) has fixed block (4), the top swing joint of horizontal pole (2) has answer spring (5), the below swing joint of mounting panel (1) has upper end cover (6), the below swing joint of upper end cover (6) has bee calling organ (7), the inboard swing joint of bee calling organ (7) has electric capacity board (8), the below swing joint of upper end cover (6) has fixed bolster (9), the below swing joint of fixed bolster (9) has bimetallic strip (10), the below swing joint of bimetallic strip (10) has fly leaf (11), the right side swing joint of fly leaf (11) has annular plate (12), the inner side of the fixed support (9) is movably connected with a trigger shaft (14), the lower portion of the fixed support (9) is movably connected with a V-shaped rod (13), the outer side of the trigger shaft (14) is movably connected with a clamping block (15), and the outer side of the fixed support (9) is movably connected with a lower end cover (16).
2. A point type fire early warning apparatus using a bimetal principle according to claim 1, wherein: the inner side of the connecting plate (3) is movably connected with a positioning gear, and two groups of racks are also arranged and matched with the positioning gear.
3. A point type fire early warning apparatus using a bimetal principle according to claim 1, wherein: the mounting plate is characterized in that a groove is formed in the corresponding positions of the lower portion of the mounting plate (1) and the upper portion of the upper end cover (6), the groove is symmetrical in the left-right direction, a fastening spring is arranged in the groove, the fastening spring is in a compression state during mounting, a step-shaped groove is formed in the upper end cover (6), and the fixing block (4) is arranged in the groove.
4. A point type fire early warning apparatus using a bimetal principle according to claim 1, wherein: the capacitor plate (8) is connected with the buzzer (7) through an electric wire, and the electric wire of the capacitor plate (8) is connected with a fire extinguishing device matched with the device.
5. A point type fire early warning apparatus using a bimetal principle according to claim 1, wherein: and a moving block is arranged above the movable plate (11) and on the inner side of the bimetallic strip (10), and the thermal expansion coefficient of the left metal in the bimetallic strip (10) is greater than that of the right metal.
6. A point type fire early warning apparatus using a bimetal principle according to claim 1, wherein: the movable type automobile seat is characterized in that three groups of annular plates (12) are arranged in total and are respectively movably connected to the inner side of the movable plate (11) and the lower portion of the trigger shaft (14), two groups of V-shaped rods (13) are arranged in total, one end of each V-shaped rod (13) is connected with the annular plate (12) on the inner side of the movable plate (11) in a sliding mode, the other end of each V-shaped rod (13) is connected with the annular plate (12) on the lower end of the trigger shaft (14) in a sliding mode, and the middle point of each V-shaped rod (13.
7. A point type fire early warning apparatus using a bimetal principle according to claim 1, wherein: the inner side of the fixed support (9) is provided with a clamping groove, the clamping groove is movably connected with the clamping block (15) through a spring, a positioning gear is arranged below the fixed support (9), and gear teeth meshed with the positioning gear are arranged on two sides of the trigger shaft (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011175790.9A CN112270804B (en) | 2020-10-29 | 2020-10-29 | Point type fire early warning device utilizing bimetallic strip principle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011175790.9A CN112270804B (en) | 2020-10-29 | 2020-10-29 | Point type fire early warning device utilizing bimetallic strip principle |
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| Publication Number | Publication Date |
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| CN112270804A true CN112270804A (en) | 2021-01-26 |
| CN112270804B CN112270804B (en) | 2022-07-19 |
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| CN202011175790.9A Active CN112270804B (en) | 2020-10-29 | 2020-10-29 | Point type fire early warning device utilizing bimetallic strip principle |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113538868A (en) * | 2021-07-15 | 2021-10-22 | 王思文 | Early warning device for computer network safety |
| CN114122933A (en) * | 2022-01-27 | 2022-03-01 | 江苏迈克尔电子科技有限公司 | Circuit device for industrial production power distribution |
| CN116092258A (en) * | 2023-03-02 | 2023-05-09 | 山东启豪建设工程有限公司 | Fire-fighting smoke detector |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113538868A (en) * | 2021-07-15 | 2021-10-22 | 王思文 | Early warning device for computer network safety |
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| CN112270804B (en) | 2022-07-19 |
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Effective date of registration: 20220628 Address after: 310000 room 1110, building 1, Wantong center, Gongshu District, Hangzhou City, Zhejiang Province Applicant after: Zhejiang youdianyun Internet of things Technology Co.,Ltd. Address before: 730070 Lanzhou Jiaotong University Science Park, No.139 Zaolin Road, Anning District, Lanzhou City, Gansu Province Applicant before: Liu Liangliang |
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