CN108831104B - Gravity-triggered shear pin signal measurement alarm element - Google Patents
Gravity-triggered shear pin signal measurement alarm element Download PDFInfo
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- CN108831104B CN108831104B CN201810962651.7A CN201810962651A CN108831104B CN 108831104 B CN108831104 B CN 108831104B CN 201810962651 A CN201810962651 A CN 201810962651A CN 108831104 B CN108831104 B CN 108831104B
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- 238000005259 measurement Methods 0.000 title claims abstract description 25
- 230000005484 gravity Effects 0.000 title claims abstract description 22
- 230000001960 triggered effect Effects 0.000 title claims abstract description 21
- 239000004020 conductor Substances 0.000 claims abstract description 60
- 229910052802 copper Inorganic materials 0.000 claims abstract description 40
- 239000010949 copper Substances 0.000 claims abstract description 40
- 239000000919 ceramic Substances 0.000 claims abstract description 23
- 238000010008 shearing Methods 0.000 claims abstract description 22
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000004146 energy storage Methods 0.000 claims description 11
- 238000005192 partition Methods 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 6
- 238000004381 surface treatment Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
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- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Current Or Voltage (AREA)
- Emergency Alarm Devices (AREA)
Abstract
A gravity-triggered shear pin signal measurement alarm element relates to a signal measurement technology and solves the problems that an existing shear pin signal measurement element is failed to trigger, single in alarm means and difficult to find faults. The conductor plate is of a pot body structure; the battery compartment is arranged inside the conductor plate basin body structure and used for placing batteries; the positive electrode of the battery is connected with the positive plate, and the negative electrode of the battery is connected with the negative plate; the alarm circuit is used for sending an alarm signal, the positive input end of the alarm circuit is connected with the positive plate, and the negative end of the alarm circuit is connected with the conductor plate; one end of the full copper heavy hammer is elastically connected to the bottom surface of the negative plate; the other end of the all-copper heavy hammer penetrates through the bottom of the conductor plate in a non-contact manner and then extends into the ceramic bottom shell, and the conductor plate is supported by the bottom of the ceramic bottom shell, and the negative plate and the conductor plate are in a disconnected state at the moment; when the bottom of the ceramic bottom shell is broken by shearing force, the negative plate and the conductor plate are in a conducting state. The alarm has the advantages of high reliability and abundant and timely alarm means.
Description
Technical Field
The present invention relates to a signal measurement technique.
Background
The triggering mode of the common existing shear pin signal device is that a spring tension contact type is adopted to start:
the method is characterized in that the spring is tightly pressed by the pull rod and then locked on the discontinuous part, when the discontinuous part is broken off when meeting shearing force, the pull rod returns to the closed contact under the action of the spring force, so that a loop is conducted, and alarm output is realized.
The disadvantages are as follows: 1. when the service time of the element is too long, the tension of the spring is lost, so that the contact cannot be closed effectively;
2. the pull rod is blocked by the shearing part to a certain degree, so that the contact cannot be closed.
Meanwhile, the alarm output only provides a passive normally open or normally closed contact structure; the alarm means is single, and the fault position can not be rapidly indicated after the alarm occurs, so that a large amount of redundant work is brought to subsequent overhaul.
Disclosure of Invention
The invention aims to solve the problems of triggering failure, single alarming means and difficult fault finding of the existing shearing pin signal measuring element, and provides a gravity-triggered shearing pin signal measuring alarming element.
The invention relates to a gravity-triggered shear pin signal measurement alarm element which comprises a ceramic bottom shell, an all-copper heavy hammer, a conductor part, a battery chamber and an alarm circuit, wherein the ceramic bottom shell is provided with a plurality of through holes;
the conductor member includes a positive electrode plate, a negative electrode plate, and a conductor plate;
the conductor plate is of a pot body structure;
the battery chamber is arranged inside the conductor plate basin body structure and used for placing batteries; the positive electrode of the battery is connected with the positive plate, and the negative electrode of the battery is connected with the negative plate;
the alarm circuit is used for sending an alarm signal, the positive input end of the alarm circuit is connected with the positive plate, and the negative input end of the alarm circuit is connected with the conductor plate;
one end of the all-copper heavy hammer is elastically connected to the bottom surface of the negative plate; the other end of the all-copper heavy hammer penetrates through the bottom of the conductor plate in a non-contact manner and then extends into the ceramic bottom shell, and the conductor plate is supported by the bottom of the ceramic bottom shell, and the negative plate and the conductor plate are in a disconnected state at the moment; when the bottom of the ceramic bottom shell is broken by shearing force, the negative plate and the conductor plate are in a conducting state.
The working principle of the invention is as follows: when the measuring alarm element is not subjected to shearing force, the all-copper heavy hammer is borne by the ceramic bottom shell, and the negative plate and the conductor plate are in a non-contact state, at the moment, the alarm circuit cannot form a passage and does not send any alarm signal; when this measure alarm element receives the shearing force, pottery drain pan bottom is broken, and full copper weight is owing to losing bearing, and it is vertical downstream under the effect of gravity, leads to full copper weight and conductor plate contact, and at this moment, alarm circuit's positive input end links to each other through positive plate and battery positive pole, and alarm circuit's negative pole output loops through conductor plate, full copper weight and negative plate back and links to each other with the negative pole of battery, and alarm circuit constitutes the route promptly, sends alarm signal, realizes the monitoring to the round pin signal of cuting.
The invention has the advantages that the alarm is triggered by the gravity of the all-copper heavy hammer, so that the measuring element has high reliability and the accuracy of the action of the equipment is improved; because the alarm signal of the alarm circuit is not limited to one or more, the alarm means is abundant, and because the fault point of the alarm signal is visible, the fault is conveniently searched, so that the fault can be timely eliminated.
The invention is applied to the vertical hydraulic generator.
Drawings
Fig. 1 is a schematic structural diagram of a signal measurement alarm element of a gravity-triggered shear pin according to a first embodiment;
FIG. 2 is a schematic view of a conductor member according to one embodiment;
FIG. 3 is a schematic structural diagram of a ceramic bottom case according to a second embodiment;
FIG. 4 is a schematic diagram of an all-copper weight according to a third embodiment;
FIG. 5 is a schematic diagram of a battery compartment according to a fourth embodiment;
fig. 6 is a schematic structural diagram of a circuit board in a fifth embodiment and a schematic structural diagram of a component arrangement position relationship of an alarm circuit in a sixth embodiment.
Detailed Description
The first embodiment is as follows: the embodiment is described with reference to fig. 1 and 2, and the gravity-triggered shear pin signal measurement alarm element of the embodiment comprises a ceramic bottom shell 1, an all-copper heavy hammer 2, a conductor part 3, a battery chamber 4 and an alarm circuit;
the conductor member 3 includes a positive plate 3-1, a negative plate 3-2, and a conductor plate 3-3;
the conductor plate 3-3 is of a pot body structure;
the battery compartment 4 is arranged inside the basin body structure of the conductor plate 3-3, and the battery compartment 4 is used for placing batteries; the positive electrode of the battery is connected with the positive plate 3-1, and the negative electrode of the battery is connected with the negative plate 3-2;
the alarm circuit is used for sending an alarm signal, the positive input end of the alarm circuit is connected with the positive plate 3-1, and the negative input end of the alarm circuit is connected with the conductor plate 3-3;
one end of the full-copper heavy hammer 2 is elastically connected to the bottom surface of the negative plate 3-2; the other end of the all-copper heavy hammer 2 penetrates through the bottom of the conductor plate 3-3 in a non-contact manner and then extends into the ceramic bottom shell 1 to be borne by the bottom of the ceramic bottom shell 1, and the negative plate 3-2 and the conductor plate 3-3 are in a disconnected state at the moment; when the bottom of the ceramic bottom case 1 is broken by a shearing force, the negative electrode plate 3-2 and the conductor plate 3-3 are in a conduction state.
In the embodiment, the material of the ceramic bottom case 1 is brittle ceramic, and the surface of the positive plate 3-1 facing the positive electrode of the battery is subjected to rough surface treatment to increase the contact area; the center of the bottom of the conductor plate 3-3 is provided with a central hole, and the aperture of the central hole and the inner diameter of the sheared part of the ceramic bottom shell 1 are preferably less than 2 mm.
The second embodiment is as follows: the present embodiment is described with reference to fig. 3, and is further limited to a gravity-triggered shear pin signal measurement alarm device according to the first embodiment, in which the ceramic bottom case 1 includes a connecting portion 1-1 and a shearing portion 1-2;
the connecting part 1-1 and the shearing part 1-2 are both hollow cylinders, and the two hollow cylinders are coaxially arranged; the diameter of the connecting part 1-1 is larger than that of the shearing part 1-2;
the bottom end of the shearing part 1-2 is used for bearing an all-copper heavy hammer 2;
the outer wall of the conductor plate 3-3 is cylindrical;
the inner wall of the connecting part 1-1 is connected with the outer wall of the conductor plate 3-3 through threads.
In this embodiment, the diameter of the connecting portion 1-1 is 1.5-1.8 times of the diameter of the cut portion 1-2 to provide a sufficient supporting section, and the inner wall of the connecting portion 1-1 is threaded with fine threads to be closely fitted with the threads on the lower portion of the outer wall of the conductor plate 3-3.
The third concrete implementation mode: referring to fig. 4, the present embodiment is further limited to the gravity triggered shear pin signal measurement alarm device according to the second embodiment, in the present embodiment, the all-copper weight 2 includes a weight rod 2-1, a weight cap 2-2 and an all-copper pressure spring 2-3;
the hammer cap 2-2 is fixed at the top end of the hammer rod 2-1, and one end of the full copper pressure spring 2-3 is fixed at the top end of the hammer cap 2-2; the other end of the all-copper pressure spring 2-3 is fixed on the bottom surface of the negative plate 3-2;
the bottom end of the hammer rod 2-1 penetrates through the bottom of the conductor plate 3-3 in a non-contact mode and then extends into the shearing part 1-2, and the shearing part 1-2 carries the bottom end of the hammer rod 2-1.
In the present embodiment, the diameter of the hammer rod 2-1 is preferably 3/5 of the inner diameter of the sheared portion 1-2, and the length of the hammer rod 2-1 is preferably equal to the sum of the total length of the sheared portion 1-2 and the length of the 1/2 connecting portion 1-1; the diameter of the hammer cap 2-2 is preferably 3/5 of the inner diameter of the connecting part 1-1, and the length of the hammer cap 2-2 is preferably 1/2 of the length of the connecting part 1-1; the full-copper pressure spring 2-3 and the hammer cap 2-2 are connected into a whole in a welding mode, the full-copper pressure spring 2-3 is made of full copper, and the full-copper pressure spring 2-3 is used for assisting the full-copper hammer 2 to move vertically downwards.
The fourth concrete implementation mode: the present embodiment is described with reference to fig. 5, and is further limited to a gravity-triggered shear pin signal measurement alarm device according to the third embodiment, in the present embodiment, the battery compartment 4 includes a battery compartment upper cover 4-1, a battery compartment 4-2 and a spring energy storage compartment 4-3;
the battery compartment 4-2 is used for placing batteries; the spring energy storage bin 4-3 is positioned at the bottom of the battery bin 4-2, and the battery bin upper cover 4-1 covers the top of the battery bin 4-2;
a first through hole is arranged in the middle of the upper cover 4-1 of the battery compartment; the positive plate 3-1 penetrates through the first through hole to be connected with the positive electrode of the battery;
the negative plate 3-2 comprises an upper disc and a lower disc, the upper disc is arranged at the bottom of the battery bin 4-2, the lower disc is arranged at the top of the spring energy storage bin 4-3, and the upper disc and the lower disc are connected through a stud and clamped on a partition plate of the spring energy storage bin 4-3 and the battery bin 4-2;
the upper disk is connected with the negative electrode of the battery, and the other end of the full copper pressure spring 2-3 is fixed on the bottom surface of the lower disk.
In the embodiment, the battery chamber 4 is made of an insulating material, and the length of the full-copper pressure spring 2-3 is 2 times of the height of the spring energy storage chamber 4-3; the diameter of the positive plate 3-1 is preferably 2/3 battery chamber 4-2 inner diameter; the negative plate 3-2 is tightly clamped on a partition board of the battery bin 4-2 and the spring energy storage bin 4-3 by connecting an upper disc body and a lower disc body through a double-head screw cylinder, the upper disc body is connected with the battery cathode, the diameter is preferably the inner diameter of a battery bin 4-2 of 4/5, the surface of the upper disc, which faces the battery cathode, is subjected to pitted surface treatment to increase the contact area, the lower disc body is welded with an all-copper pressure spring 2-3, and the diameter is preferably the inner diameter of a battery bin 4-2 of 2/3; the outer diameter of the battery compartment 4 is determined by the inner diameter of the conductor plate 3-3; the inner diameter of the battery compartment 4-2 is determined by the diameter of the battery used; the height of the battery compartment 4-2 is determined by the height of the battery; the height of the spring energy storage bin 4-3 is the same as that of the battery bin 4-2.
The fifth concrete implementation mode: the present embodiment will be described with reference to fig. 6, and is further defined by a gravity triggered shear pin signal measurement alarm device according to the fourth embodiment, wherein the measurement device further includes a circuit board member 5;
the circuit board piece 5 is disc-shaped, and the outer diameter of the circuit board piece is the same as the inner diameter of the opening end of the basin body structure of the conductor plate 3-3;
the edge of the circuit board piece 5 is covered by an all-copper conductor, and the tight combination of the outer edge of the circuit board piece 5 and the conductor plate 3-3 is ensured;
a second through hole is formed in the center of the circuit board piece 5; the edge of the second through hole is covered with an all-copper conductor and extends out of the shaft collar structure;
the conductor part 3 further comprises a threaded stud 3-4; the bottom end of the threaded column 3-4 is fixed on the top of the positive plate 3-1;
the inner wall of the shaft collar structure is provided with threads and is tightly connected with the threaded columns 3-4 through the threads;
the components of the alarm circuit are circumferentially arranged on the circuit board 5, the positive input ends of the components of the alarm circuit are connected in parallel and then connected with the shaft collar structure, and the negative input ends of the components of the alarm circuit are connected in parallel and then connected with the outer edge of the circuit board 5.
In the embodiment, the threaded column 3-4 and the positive plate 3-1 are of an integral structure; the threads of the threaded columns 3-4 are used for adjusting the compression degree of the positive plates 3-1;
the sixth specific implementation mode: the present embodiment is described with reference to fig. 6, and is further limited to the gravity triggered shear pin signal measurement alarm device according to the fifth embodiment, in which the components of the alarm circuit include an LED7, a buzzer 8 and a photocoupler 9;
the LED7 is used for sending out an optical alarm signal;
the buzzer 8 is used for sending out an acoustic alarm signal;
the photoelectric coupler 9 is provided with two external output terminals, and the two external output terminals are used for being externally connected with other alarm devices.
The seventh embodiment: the present embodiment is further limited to the gravity triggered shear pin signal measurement alarm device according to the fifth embodiment, and in the present embodiment, the measurement device further includes a transparent end cap 6;
the transparent end cover 6 is a hollow transparent cylindrical cup body, the inner wall of the opening end of the transparent end cover is provided with threads, and the transparent end cover is connected with the outer wall of the conductor plate 3-3 through the threads; in addition, a threaded hole is formed in the center of the top of the transparent end cover 6; the threaded posts 3-4 fasten the transparent end cap 6 through the threaded holes.
In the embodiment, the upper part of the outer wall of the transparent end cover 6 is opposite to the position of the external terminal, and a hole is opened and a waterproof measure is taken, so that the alarm can be led out conveniently.
Claims (7)
1. A gravity-triggered shear pin signal measurement alarm element is characterized by comprising a ceramic bottom shell (1), an all-copper heavy hammer (2), a conductor component (3), a battery chamber (4) and an alarm circuit;
the conductor member (3) includes a positive electrode plate (3-1), a negative electrode plate (3-2), and a conductor plate (3-3);
the conductor plate (3-3) is of a pot body structure;
the battery compartment (4) is arranged inside the basin body structure of the conductor plate (3-3), and the battery compartment (4) is used for placing batteries; the positive electrode of the battery is connected with the positive plate (3-1), and the negative electrode of the battery is connected with the negative plate (3-2);
the alarm circuit is used for sending an alarm signal, the positive input end of the alarm circuit is connected with the positive plate (3-1), and the negative input end of the alarm circuit is connected with the conductor plate (3-3);
one end of the all-copper heavy hammer (2) is elastically connected to the bottom surface of the negative plate (3-2); the other end of the all-copper heavy hammer (2) penetrates through the bottom of the conductor plate (3-3) in a non-contact manner and then extends into the ceramic bottom shell (1) to be carried by the bottom of the ceramic bottom shell (1), and the negative plate (3-2) and the conductor plate (3-3) are in a disconnected state at the moment; when the bottom of the ceramic bottom shell (1) is broken by shearing force, the negative plate (3-2) and the conductor plate (3-3) are in a conducting state.
2. A gravity triggered shear pin signal measurement alarm element according to claim 1, characterised in that the ceramic bottom shell (1) comprises a connecting portion (1-1) and a shearing portion (1-2);
the connecting part (1-1) and the shearing part (1-2) are both hollow cylinders, and the two hollow cylinders are coaxially arranged; the diameter of the connecting part (1-1) is larger than that of the shearing part (1-2);
the bottom end of the shearing part (1-2) is used for bearing an all-copper heavy hammer (2);
the outer wall of the conductor plate (3-3) is cylindrical;
the inner wall of the connecting part (1-1) is connected with the outer wall of the conductor plate (3-3) through threads.
3. A gravity triggered shear pin signal measurement alarm element according to claim 2, characterized in that the all-copper weight (2) comprises a weight rod (2-1), a weight cap (2-2) and an all-copper pressure spring (2-3);
the hammer cap (2-2) is fixed at the top end of the hammer rod (2-1), and one end of the full copper pressure spring (2-3) is fixed at the top end of the hammer cap (2-2); the other end of the all-copper pressure spring (2-3) is fixed on the bottom surface of the negative plate (3-2);
the bottom end of the hammer rod (2-1) penetrates through the bottom of the conductor plate (3-3) in a non-contact mode and then extends into the shearing part (1-2), and the shearing part (1-2) carries the bottom end of the hammer rod (2-1).
4. A gravity triggered shear pin signal measurement alarm element according to claim 3, wherein the battery compartment (4) comprises a battery compartment upper cover (4-1), a battery compartment (4-2) and a spring energy storage compartment (4-3);
the battery compartment (4-2) is used for accommodating batteries; the spring energy storage bin (4-3) is positioned at the bottom of the battery bin (4-2), and the upper cover (4-1) of the battery bin covers the top of the battery bin (4-2);
a first through hole is arranged in the middle of the upper cover (4-1) of the battery compartment; the positive plate (3-1) passes through the first through hole and is connected with the positive electrode of the battery;
the negative plate (3-2) comprises an upper disc and a lower disc, the upper disc is arranged at the bottom of the battery bin (4-2), the lower disc is arranged at the top of the spring energy storage bin (4-3), and the upper disc and the lower disc are connected through a stud and clamped on a partition plate of the spring energy storage bin (4-3) and the battery bin (4-2);
the upper disk is connected with the negative electrode of the battery, and the other end of the full-copper pressure spring (2-3) is fixed on the bottom surface of the lower disk.
5. A gravity triggered shear pin signal measurement alarm element according to claim 4, characterized in that the measurement element further comprises a circuit board member (5);
the circuit board piece (5) is disc-shaped, and the outer diameter of the circuit board piece is the same as the inner diameter of the opening end of the basin body structure of the conductor plate (3-3);
the edge of the circuit board piece (5) is covered by a full copper conductor, and the tight combination of the outer edge of the circuit board piece (5) and the conductor plate (3-3) is ensured;
a second through hole is formed in the center of the circuit board piece (5); the edge of the second through hole is covered with an all-copper conductor and extends out of the shaft collar structure;
the conductor part (3) further comprises a threaded post (3-4); the bottom end of the threaded column (3-4) is fixed at the top of the positive plate (3-1);
the inner wall of the shaft collar structure is provided with threads and is tightly connected with the threaded columns (3-4) through the threads;
the components of the alarm circuit are circumferentially arranged on the circuit board (5), the positive input ends of the components of the alarm circuit are connected in parallel and then connected with the shaft collar structure, and the negative input ends of the components of the alarm circuit are connected in parallel and then connected with the outer edge of the circuit board (5).
6. The gravity triggered shear pin signal measurement alarm element according to claim 5, wherein components of the alarm circuit comprise an LED (7), a buzzer (8) and a photocoupler (9);
the LED (7) is used for emitting an optical alarm signal;
the buzzer (8) is used for sending out an acoustic alarm signal;
the photoelectric coupler (9) is provided with two external output terminals, and the two external output terminals are used for being externally connected with other alarm devices.
7. A gravity triggered shear pin signal measurement alarm element according to claim 5, characterized in that the measurement element further comprises a transparent end cap (6);
the transparent end cover (6) is a hollow transparent cylindrical cup body, the inner wall of the opening end of the transparent end cover is provided with threads, and the transparent end cover is connected with the outer wall of the conductor plate (3-3) through the threads; in addition, a threaded hole is formed in the center of the top of the transparent end cover (6); the threaded columns (3-4) fasten the transparent end cover (6) through the threaded holes.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810962651.7A CN108831104B (en) | 2018-08-22 | 2018-08-22 | Gravity-triggered shear pin signal measurement alarm element |
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| CN201810962651.7A CN108831104B (en) | 2018-08-22 | 2018-08-22 | Gravity-triggered shear pin signal measurement alarm element |
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| CN108831104B true CN108831104B (en) | 2020-05-29 |
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| CN113007006B (en) * | 2021-02-02 | 2022-09-16 | 湖北清江水电开发有限责任公司 | Visible acousto-optic alarm shear pin annunciator |
| CN114753958B (en) * | 2022-03-03 | 2023-11-17 | 华能澜沧江水电股份有限公司 | Monitoring device for shear pin of guide vane of water turbine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2847280Y (en) * | 2005-06-15 | 2006-12-13 | 马梁 | Automatic safety monitor for underground pipeline |
| CN203398351U (en) * | 2013-07-10 | 2014-01-15 | 国家电网公司 | Live part verification prompting device for hitched ground wire |
| CN204166662U (en) * | 2014-11-12 | 2015-02-18 | 广东梅雁吉祥水电股份有限公司 | A kind of break pin signalling means |
| CN204614123U (en) * | 2015-03-20 | 2015-09-02 | 吴敏卿 | Cable theft-prevention monitoring device |
| CN207081426U (en) * | 2017-08-15 | 2018-03-09 | 上海建工七建集团有限公司 | Tilt prior-warning device |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201025556Y (en) * | 2006-12-15 | 2008-02-20 | 党金春 | A cable theft prevention alarming device |
| CN201223533Y (en) * | 2008-07-29 | 2009-04-22 | 湖南工程学院 | Alarming device of blind-guiding stick |
| US8117946B2 (en) * | 2008-10-31 | 2012-02-21 | Ring And Pinion Service, Inc. | Locking differential with shear pin/spring assembly |
| US20140240139A1 (en) * | 2013-02-22 | 2014-08-28 | Marketing Displays, Inc. | Portable message device |
| CN204791356U (en) * | 2015-06-22 | 2015-11-18 | 泉州市森海讯电子科技有限公司 | Cable burglar alarm |
| CN205097118U (en) * | 2015-10-29 | 2016-03-23 | 新疆新能发展有限责任公司大山口水力发电厂 | Hydraulic generator break pin instrument of choosing |
| CN206945040U (en) * | 2017-06-01 | 2018-01-30 | 哈尔滨电机厂有限责任公司 | A kind of hydraulic turbine break pin state on_line monitoring element |
-
2018
- 2018-08-22 CN CN201810962651.7A patent/CN108831104B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2847280Y (en) * | 2005-06-15 | 2006-12-13 | 马梁 | Automatic safety monitor for underground pipeline |
| CN203398351U (en) * | 2013-07-10 | 2014-01-15 | 国家电网公司 | Live part verification prompting device for hitched ground wire |
| CN204166662U (en) * | 2014-11-12 | 2015-02-18 | 广东梅雁吉祥水电股份有限公司 | A kind of break pin signalling means |
| CN204614123U (en) * | 2015-03-20 | 2015-09-02 | 吴敏卿 | Cable theft-prevention monitoring device |
| CN207081426U (en) * | 2017-08-15 | 2018-03-09 | 上海建工七建集团有限公司 | Tilt prior-warning device |
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| CN108831104A (en) | 2018-11-16 |
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