CN113963499A - Optical fiber alarm device and power equipment - Google Patents
Optical fiber alarm device and power equipment Download PDFInfo
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- CN113963499A CN113963499A CN202111302413.1A CN202111302413A CN113963499A CN 113963499 A CN113963499 A CN 113963499A CN 202111302413 A CN202111302413 A CN 202111302413A CN 113963499 A CN113963499 A CN 113963499A
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 119
- 230000000903 blocking effect Effects 0.000 claims abstract description 36
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- 239000000835 fiber Substances 0.000 abstract description 8
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/16—Actuation by interference with mechanical vibrations in air or other fluid
- G08B13/1654—Actuation by interference with mechanical vibrations in air or other fluid using passive vibration detection systems
- G08B13/169—Actuation by interference with mechanical vibrations in air or other fluid using passive vibration detection systems using cable transducer means
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Abstract
The invention discloses an optical fiber alarm device and power equipment, wherein the optical fiber alarm device specifically comprises a base, wherein the base comprises an accommodating box body in which a cavity is arranged; the accommodating box body is provided with an optical fiber unit, and one end of the optical fiber unit extends into the cavity; the optical fiber triggering assembly is rotationally connected in the cavity and is also connected with a resetting unit; a blocking part is arranged outside the accommodating box body; a limiting component is arranged between the blocking part and the accommodating box body; one end of the limiting component extends into the cavity and is connected with the optical fiber triggering component; the other end of the limiting assembly penetrates through the blocking part and is fixedly connected with an external connecting unit; an alarm triggering unit is further arranged on one side of the blocking part, which is far away from the accommodating box body; the alarm triggering unit is detachably connected with the external connecting unit; when the above-mentioned condition that faces the invasion, optic fibre trigger assembly can carry out twice of fixed interval to the optical fiber unit and strike, produces two vibration signals that the degree of discernment is very high promptly, has with low costs and the efficient advantage of reporting to the police.
Description
Technical Field
The invention relates to the technical field of theft prevention, in particular to an optical fiber alarm device and power equipment.
Background
For civil equipment such as transformer substations and communication base stations, the cable trench is an indispensable infrastructure, and cables in the cable trench are not only used for power transmission, but also used for functions such as relay protection, automatic control, communication, measurement and metering, and are nerve centers of various equipment. Therefore, once an illegal intrusion action aiming at the cable trench occurs, the cable therein can be in failure, the failure is difficult to be checked and takes a long time to be checked, and the relay protection or the control loop can be out of work, so that the accident is expanded, even the main equipment is damaged, and the production can not be recovered for a long time. The current checking mode depends on the traditional manual checking mode, and the cable fault and the malignant human casualty accident caused by external factors such as disorder, rough construction and the like are difficult to be effectively prevented. Therefore, a real-time distributed intelligent cable safety monitoring and early warning technology is needed, which can eliminate blind areas in time and space.
Currently, many cities try to realize the theft prevention of cables and cable ducts by means of infrared ray correlation, electronic well covers and the like, but no matter the infrared ray correlation or the electronic well covers, the cable and cable ducts can only be installed underground by using power supply terminals, and the full underground trench cannot be monitored. In addition, for the infrared correlation scheme, the problems of poor environmental reliability and the like exist, particularly in the south, the rainy season is long, the environment is humid, and the service life of an infrared system is far lower than the design value. For the scheme of the electronic well lid (namely, a mobile phone communication chip and an accelerometer are added in the well lid to monitor the movement of the well lid), only the state of the well lid can be monitored, the abnormal condition of a cable duct is difficult to be considered, for millions of well lids in cities, the technology combining the electronics and the chip has the problems of overhigh price, poor environmental adaptability, easy corrosion, difficult power supply and the like in humid regions, frequent replacement, short service life of the system and high later maintenance cost.
In order to overcome the defect of high cost of schemes such as infrared ray correlation and electronic well lid, the prior art also provides an anti-theft alarm method using optical fibers, the core of the anti-theft alarm method is that armored optical fibers are buried along a cable trench, and when an intruder opens the well lid to generate vibration, the optical fibers carry out intrusion judgment through vibration signals. However, the method is easily affected by media such as air in the cable trench and a protective sleeve for protecting the optical fiber, and is also easily affected by vibration signals in the cable trench in autumn, so that an intrusion alarm cannot be accurately sent, often an intruder needs to be close to the protective object or touch the optical fiber to send the alarm, and the alarm efficiency is low.
Therefore, there is a need to develop a new alarm device to overcome the problem that the alarm devices in the prior art are not compatible with low cost and high alarm efficiency.
Disclosure of Invention
The invention aims to provide an optical fiber alarm device and power equipment, and solves the problems that the existing alarm device in the prior art cannot be compatible at the same time, and is low in cost and high in alarm efficiency.
In order to achieve the purpose, the invention adopts the following technical scheme:
an optical fiber alarm device comprises a base, wherein the base comprises an accommodating box body with a cavity arranged therein; an optical fiber unit is arranged on one side wall of the accommodating box body, and one end of the optical fiber unit extends into the cavity;
an optical fiber triggering assembly is rotatably connected in the cavity and used for knocking the optical fiber unit to give an alarm; the optical fiber triggering assembly is also connected with a resetting unit;
a blocking part is arranged outside the accommodating box body; a limiting component is arranged between the blocking part and the accommodating box body; one end of the limiting assembly extends into the cavity, is connected with the optical fiber triggering assembly and is used for driving the optical fiber triggering assembly to rotate; the other end of the limiting assembly penetrates through the blocking part and is fixedly connected with an external connecting unit;
an alarm triggering unit is further arranged on one side, away from the accommodating box body, of the blocking part; the alarm triggering unit is detachably connected with the external connecting unit;
when the external connecting unit is dragged towards a direction far away from the blocking part, the limiting component drives the optical fiber triggering component to rotate along a first self-rotation direction until a knocking part of the optical fiber triggering component abuts against the optical fiber unit, and the first knocking is completed;
after the first knocking is finished, the resetting unit drives the optical fiber triggering assembly to rotate along the direction opposite to the first rotation direction until the knocking part of the optical fiber triggering assembly props against the optical fiber unit again, and the second knocking is finished.
Optionally, the spacing assembly comprises a spacing ring disposed outside the cavity;
one side of the limiting ring is connected with a first connecting wire, the tail end of the first connecting wire is fixedly connected to the optical fiber triggering assembly, and the first connecting wire is wound on the optical fiber triggering assembly;
and the other side of the limiting ring is connected with a second connecting wire, and the second connecting wire penetrates through the blocking part and is fixedly connected with the external connecting unit.
Optionally, a second avoidance hole is formed in a position, corresponding to the second connecting line, of the blocking portion;
the second connecting wire with be connected with spacing ball between the external connection unit, spacing ball set up in the stop part with between the external connection unit, and can not pass the hole is dodged to the second.
Optionally, the optical fiber triggering assembly comprises a rotating shaft rotatably connected with the base;
the rotary shaft is sleeved with a knocking rotator, the reset unit is a reset torsion spring, the reset torsion spring is sleeved on the rotary shaft, a first end part of the reset torsion spring is fixedly connected with the knocking rotator, and a second end part of the reset torsion spring is fixedly connected with the base;
the first connecting line is wound on and fixedly connected with the knocking rotator.
Optionally, the knocking rotator comprises a knocking central part sleeved on the rotating shaft, and a first knocking part and a second knocking part are respectively and convexly arranged at two ends of the knocking central part.
Optionally, the external connection unit is a magnet block.
Optionally, the base comprises a main mounting frame; the main mounting frame is convexly provided with the blocking part and is mounted on the accommodating box body through a bolt.
An electrical apparatus comprising a fibre-optic alarm device as described above.
Compared with the prior art, the invention has the following beneficial effects:
according to the optical fiber alarm device and the power equipment, when the optical fiber alarm device faces an intrusion condition, the alarm trigger unit can be dragged, so that the external connection unit can be dragged along the direction away from the blocking part, the limiting component is driven to move, the optical fiber trigger component is driven to rotate along the first rotation direction, and the optical fiber trigger component can knock the optical fiber unit for the first time; and after the external connection unit is dragged a certain distance, the limiting assembly is abutted against the blocking part, so that a reaction force is provided for the external connection unit, at the moment, the external connection unit is not dragged any more due to the reaction force, and then under the action of the reset unit, the reset unit drives the optical fiber triggering assembly to rotate along the direction opposite to the direction of the first rotation, so that the optical fiber triggering assembly performs secondary knocking on the optical fiber unit. When the above-mentioned condition that faces the invasion, optic fibre trigger assembly has carried out fixed interval's twice to the optical fiber unit and has strikeed, produces two vibration signals that the degree of distinguishing is high promptly to transmit to the optical fiber unit, thereby just can realize reporting to the police in the early stage of invasion, ensured alarm efficiency, and compare in schemes such as infrared system, electron well lid cost lower, have with low costs and the efficient advantage of warning.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
The structure, proportion, size and the like shown in the drawings are only used for matching with the content disclosed in the specification, so that the person skilled in the art can understand and read the description, and the description is not used for limiting the limit condition of the implementation of the invention, so the method has no technical essence, and any structural modification, proportion relation change or size adjustment still falls within the scope of the technical content disclosed by the invention without affecting the effect and the achievable purpose of the invention.
Fig. 1 is a schematic overall structure diagram of an optical fiber alarm device according to an embodiment of the present invention;
fig. 2 is a schematic front view of a first state of an optical fiber alarm device according to an embodiment of the present invention;
FIG. 3 is a schematic view of the enlarged partial structure of FIG. 2 at A;
fig. 4 is a schematic front view of a second state of the optical fiber alarm device according to the embodiment of the present invention.
Illustration of the drawings: 10. a base; 11. a cavity; 12. a movable portion; 13. a first avoidance hole; 14. a second avoidance hole; 15. a main mounting frame; 151. a blocking portion; 16. an accommodation box body;
20. a fiber optic triggering assembly; 21. a rotating shaft; 22. knocking the rotator; 221. knocking the central part; 222. a first knocking portion; 223. a second striking portion;
30. a limiting component; 31. a limiting ring; 32. a first connecting line; 33. a second connecting line; 40. an optical fiber unit; 50. an external connection unit; 60. an alarm triggering unit; 70. and a limiting ball.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the embodiments described below 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.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. It should be noted that when one component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present.
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
Referring to fig. 1 to 4, fig. 1 is a schematic overall structure diagram of an optical fiber alarm device according to an embodiment of the present invention, fig. 2 is a schematic front view structure diagram of a first state of the optical fiber alarm device according to the embodiment of the present invention, fig. 3 is a schematic partial enlarged structure diagram of fig. 2 at a point a, and fig. 4 is a schematic front view structure diagram of a second state of the optical fiber alarm device according to the embodiment of the present invention.
Example one
The optical fiber alarm device provided by the embodiment is applied to the technical field of theft prevention, is mainly applied to equipment which is provided with a well lid and internally stores cables, can be distinguished from conventional optical fiber alarm means, infrared systems, electronic well lids and other schemes, and has the advantages of low cost and high precision.
As shown in fig. 1, 2 and 4, the optical fiber alarm device provided in this embodiment includes a base 10, where the base 10 includes a containing box 16 with a cavity 11 therein; a side wall of the receiving box 16 is provided with an optical fiber unit 40, and one end of the optical fiber unit 40 extends into the cavity 11.
The optical fiber triggering assembly 20 is rotatably connected in the cavity 11 and used for knocking the optical fiber unit 40 to alarm; the fiber triggering component 20 is also connected with a resetting unit. The optical fiber unit 40 can pass through the respective bases 10 of the multiple groups of optical fiber alarm devices, or each base 10 can be provided with an independent optical fiber unit 40; the resetting unit is used for resetting the optical fiber triggering component 20 after the external force of the optical fiber triggering component 20 is removed.
A blocking portion 151 is provided outside the storage case 16; a limiting component 30 is arranged between the blocking part 151 and the accommodating box body 16; one end of the limiting component 30 extends into the cavity 11, is connected with the optical fiber triggering component 20, and is used for driving the optical fiber triggering component 20 to rotate; the other end of the spacing assembly 30 passes through the blocking portion 151 and is fixedly connected with the external connection unit 50. Wherein a movable part 12 is formed between the blocking part 151 and the receiving box 16, and the position limiting assembly 30 can move up and down in the movable part 12.
An alarm triggering unit 60 is further arranged on one side of the blocking part 151 away from the accommodating box body 16; the alarm triggering unit 60 is detachably connected to the external connection unit 50. The alarm triggering unit 60 is a unit that can protect devices such as cables inside, such as a manhole cover, a protective cover, and a top cover.
When the external connection unit 50 is dragged in a direction away from the blocking portion 151, the limiting component 30 drives the optical fiber triggering component 20 to rotate in the first rotation direction until the knocking portion of the optical fiber triggering component 20 abuts against the optical fiber unit 40, thereby completing the first knocking. In addition, in an initial state, that is, when the external connection unit 50 is not dragged, the external connection unit 50 is supported on the base 10, and at this time, the optical fiber triggering component 20 does not knock the optical fiber unit 40, specifically, the optical fiber triggering component 20 does not contact with the optical fiber unit 40, and can also continuously contact with the optical fiber unit 40, and the optical fiber unit 40 is not knocked; here, the direction away from the blocking portion 151 specifically refers to a first direction as shown in fig. 2, and refers to a vertically upward direction in the present embodiment.
After the first knocking is completed, the reset unit drives the optical fiber triggering assembly 20 to rotate along the direction opposite to the first rotation direction until the knocking part of the optical fiber triggering assembly 20 abuts against the optical fiber unit 40 again, and the second knocking is completed. In the present embodiment, the first rotation direction refers to a counterclockwise rotation direction, and a direction opposite to the first rotation direction refers to a clockwise rotation direction.
Specifically, it protects internal cables and the like by an alarm triggering unit 60 such as a manhole cover, and the alarm triggering unit 60 is detachably connected to the external connection unit 50. When the optical fiber triggering assembly 20 is in an intrusion condition, the alarm triggering unit 60 can be dragged by an illegal person along a first direction, so that the external connection unit 50 is driven to move along the first direction, and meanwhile, the limiting assembly 30 is driven to move along the first direction, so that the knocking part of the optical fiber triggering assembly 20 is driven to rotate along the direction close to the optical fiber unit 40; until the limiting assembly 30 abuts against the blocking portion 151, the optical fiber triggering assembly 20 knocks the optical fiber unit 40 for the first time; meanwhile, since the position limiting assembly 30 abuts against the blocking portion 151, a reaction force opposite to the first direction is provided to the external connection unit 50, and the external connection unit 50 is disconnected from the alarm triggering unit 60 by the reaction force; at this time, the external force applied to the alarm triggering unit 60 is no longer transmitted to the external connection unit 50, so that the optical fiber triggering component 20 is reset under the action of the resetting unit, and the optical fiber unit 40 is rapidly knocked for the second time through reverse rotation (i.e. clockwise in fig. 2). When the above-mentioned condition that faces the invasion, optic fibre trigger assembly 20 has carried out twice strikes of fixed interval to optic fibre unit 40, produces two vibration signals that the degree of distinguishing is high promptly to transmit to optic fibre unit 40, thereby just can realize reporting to the police in the early stage of invasion, ensured alarm efficiency, and compare in schemes such as infrared system, electron well lid cost lower, have with low costs and the efficient advantage of reporting to the police. It is necessary to supplement that, because the interval between the two vibration signals is preset and limited by the reset unit, the alarm device can more easily identify the two vibration signals, so that the system can receive the vibration information at the early stage of intrusion occurrence, and the internal effect is protected powerfully.
Further, the position limiting assembly 30 includes a position limiting ring 31 disposed outside the cavity 11.
One side of the limiting ring 31 is connected with a first connecting wire 32, the first connecting wire 32 extends into the cavity 11 and is fixedly connected to the optical fiber triggering component 20, and the first connecting wire 32 is wound on the optical fiber triggering component 20. Additionally, as an alternative embodiment, a rack is connected to one side of the limiting ring 31, and the optical fiber triggering assembly 20 includes a gear mounted on the shaft thereof, such that when the limiting ring 30 is pulled in the first direction, the rack is engaged with the gear, thereby rotating the optical fiber triggering assembly 20.
The other side of the limiting ring 31 is connected with a second connecting line 33, and the second connecting line 33 passes through the blocking portion 151, extends to the outside of the movable portion 12 along the first direction, and is fixedly connected with the external connection unit 50.
Further, the blocking portion 151 is provided with a second avoiding hole 14 at a position corresponding to the second connecting line 33.
A limiting ball 70 is connected between the second connecting line 33 and the external connecting unit 50, and the limiting ball 70 is disposed between the blocking portion 151 and the external connecting unit 50 and cannot pass through the second avoiding hole 14. When the alarm triggering unit 60 is not dragged, the check ball 70 is supported on the blocking portion 151.
In one embodiment, the fiber optic activation assembly 20 includes a rotatable shaft 21 that is rotatably coupled to the base 10.
The cover is equipped with on the rotation axis 21 and strikes circulator 22, and the reset unit is the reset torsion spring, and on the rotation axis 21 was located to the reset torsion spring cover, the first end of reset torsion spring and strike circulator 22 fixed connection, the second tip and the base 10 fixed connection of reset torsion spring.
The first connecting wire 32 is wound around and fixedly attached to the tapping rotator 22.
Further, the knocking rotator 22 includes a knocking center 221 sleeved on the rotating shaft 21, and a first knocking portion 222 and a second knocking portion 223 are respectively protruded at both ends of the knocking center 221.
Specifically, when the external connection unit 50 is not dragged and is carried on the stopper 151, the first tap portion 222 abuts against the optical fiber unit 40; when the external connection unit 50 is dragged in the first direction, the first tap portion 222 rotates in a direction away from the optical fiber unit 40, the second tap portion 223 rotates in a direction close to the optical fiber unit 40, and the second tap portion 223 makes a first tap on the optical fiber unit 40; after the alarm triggering unit 60 is disconnected from the external connection unit 50, the first knocking portion 222 rotates in a direction close to the optical fiber unit 40 under the action of the reset unit, and causes a second knocking to the optical fiber unit 40; the second tap portion 223 rotates in a direction away from the optical fiber unit 40.
It should be added that the reset unit may also be a compression spring, for example, the compression spring connects the base 10 and the first knocking portion 222, and when the external connection unit 50 is dragged along the first direction, the compression spring is compressed; after the alarm triggering unit 60 is disconnected from the external connection unit 50, the pressing spring is reset, so that the first tap portion 222 moves in a direction to approach the optical fiber unit 40.
In other alternative embodiments, the optical fiber triggering assembly 20 may further include a central shaft, a triggering rod is rotatably connected to the central shaft and can be driven by the limiting assembly 30 to rotate, one end of the triggering rod is rotatably connected to the central shaft, and the other end of the triggering rod forms a knocking portion; the tap portion taps the optical fiber unit 40 from the lower side while rotating counterclockwise when the external connection unit 50 is dragged in the first direction; after the alarm triggering unit 60 is disconnected from the external connection unit 50, the striking portion is rotated clockwise to strike the optical fiber unit 40 from the upper side by the reset unit.
In an alternative embodiment, the external connection unit 50 is a magnet block. It should be added that the external connection unit 50 may also be a projection with a snap-fit that can snap-fit into a corresponding slot on the alarm triggering unit 60.
Further, the base 10 includes a main mounting frame 15; the main mounting frame 15 is provided with a stopper 151 thereon and the receiving case 16 is mounted thereon by bolts. Meanwhile, the accommodating box 16 is provided with a first avoiding hole 13 at a position corresponding to the first connecting line 32. The storage case 16 has a cavity 11 formed therein, and a movable portion 12 is formed between the storage case 16 and the stopper 151.
In conclusion, the optical fiber alarm device provided by the embodiment has the advantages of low cost, high alarm efficiency, easy intrusion detection, high detection precision and the like.
Example two
The embodiment provides electric equipment, which comprises the optical fiber alarm device; the alarm triggering unit 60 is detachably connected to the external connection unit 50, and components requiring theft prevention, such as cables and electronic components, are provided on a side of the external connection unit 50 away from the alarm triggering unit 60. The first embodiment describes a specific structure and technical effects of the optical fiber alarm device, and the electric power equipment of the first embodiment also has the technical effects by using the structure.
In conclusion, the power equipment provided by the embodiment has the advantages of low cost, high alarm efficiency, easy intrusion detection, high detection precision and the like.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. An optical fiber alarm device is characterized by comprising a base (10), wherein the base (10) comprises an accommodating box body (16) provided with a cavity (11) inside; an optical fiber unit (40) is arranged on one side wall of the accommodating box body (16), and one end of the optical fiber unit (40) extends into the cavity (11);
an optical fiber trigger assembly (20) is rotatably connected in the cavity (11) and used for knocking the optical fiber unit (40) to alarm; the optical fiber triggering assembly (20) is also connected with a resetting unit;
a blocking part (151) is arranged outside the accommodating box body (16); a limiting component (30) is arranged between the blocking part (151) and the accommodating box body (16); one end of the limiting component (30) extends into the cavity (11), is connected with the optical fiber triggering component (20) and is used for driving the optical fiber triggering component (20) to rotate; the other end of the limiting component (30) penetrates through the blocking part (151) and is fixedly connected with an external connecting unit (50);
an alarm triggering unit (60) is further arranged on one side, away from the accommodating box body (16), of the blocking part (151); the alarm triggering unit (60) is detachably connected with the external connection unit (50);
when the external connection unit (50) is dragged towards a direction far away from the blocking part (151), the limiting component (30) drives the optical fiber triggering component (20) to rotate along a first rotation direction until the knocking part of the optical fiber triggering component (20) abuts against the optical fiber unit (40), and the first knocking is completed;
after the first knocking is finished, the resetting unit drives the optical fiber triggering assembly (20) to rotate along the direction opposite to the first rotation direction until the knocking part of the optical fiber triggering assembly (20) props against the optical fiber unit (40) again, and the second knocking is finished.
2. A fibre-optic alarm device according to claim 1, characterised in that the stop assembly (30) comprises a stop collar (31) disposed outside the cavity (11);
one side of the limiting ring (31) is connected with a first connecting wire (32), the tail end of the first connecting wire (32) is fixedly connected to the optical fiber triggering assembly (20), and the first connecting wire (32) is wound on the optical fiber triggering assembly (20);
the other side of the limiting ring (31) is connected with a second connecting wire (33), and the second connecting wire (33) penetrates through the blocking part (151) and is fixedly connected with the external connecting unit (50).
3. The optical fiber alarm device according to claim 2, wherein a second avoidance hole (14) is formed in the position of the blocking portion (151) corresponding to the second connecting wire (33);
second connecting wire (33) with be connected with spacing ball (70) between external connection unit (50), spacing ball (70) set up in block portion (151) with between external connection unit (50), and can not pass hole (14) are dodged to the second.
4. A fibre-optic alarm device according to claim 2 wherein the fibre-optic activating assembly (20) comprises a rotary shaft (21) rotatably connected to the base (10);
the rotary shaft (21) is sleeved with a knocking rotator (22), the reset unit is a reset torsion spring, the reset torsion spring is sleeved on the rotary shaft (21), the first end of the reset torsion spring is fixedly connected with the knocking rotator (22), and the second end of the reset torsion spring is fixedly connected with the base (10);
the first connecting line (32) is wound around and fixedly connected to the tapping rotator (22).
5. The optical fiber alarm device according to claim 4, wherein the knocking rotator (22) comprises a knocking center (221) sleeved on the rotating shaft (21), and a first knocking portion (222) and a second knocking portion (223) are respectively protruded at two ends of the knocking center (221).
6. A fibre-optic alarm device according to claim 1, characterised in that the external connection unit (50) is a magnet block.
7. A fibre-optic alarm device according to claim 1, characterised in that the base (10) comprises a main mounting frame (15); the main mounting frame (15) is convexly provided with the blocking part (151) and is mounted on the accommodating box body (16) through bolts.
8. An electrical apparatus comprising a fibre-optic alarm device according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111302413.1A CN113963499A (en) | 2021-11-04 | 2021-11-04 | Optical fiber alarm device and power equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111302413.1A CN113963499A (en) | 2021-11-04 | 2021-11-04 | Optical fiber alarm device and power equipment |
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| CN113963499A true CN113963499A (en) | 2022-01-21 |
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| CN202111302413.1A Pending CN113963499A (en) | 2021-11-04 | 2021-11-04 | Optical fiber alarm device and power equipment |
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