CN114495403A - Fire alarm controller with safety protection - Google Patents
Fire alarm controller with safety protection Download PDFInfo
- Publication number
- CN114495403A CN114495403A CN202210155237.1A CN202210155237A CN114495403A CN 114495403 A CN114495403 A CN 114495403A CN 202210155237 A CN202210155237 A CN 202210155237A CN 114495403 A CN114495403 A CN 114495403A
- Authority
- CN
- China
- Prior art keywords
- fire alarm
- alarm controller
- box
- safety protection
- box body
- Prior art date
- 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
Links
- 238000009423 ventilation Methods 0.000 claims description 11
- 239000004576 sand Substances 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 7
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 230000006978 adaptation Effects 0.000 claims description 3
- 239000000110 cooling liquid Substances 0.000 claims description 3
- 241000883990 Flabellum Species 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 8
- 238000007689 inspection Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000002826 coolant Substances 0.000 description 4
- 230000017525 heat dissipation Effects 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
Abstract
The utility model discloses a fire alarm controller with safety protection, which relates to the technical field of fire alarm controllers and comprises a box body, wherein the lower part of the box body is open, a driving piece is arranged on the upper surface of the box body, a supporting piece is arranged on the lower side of the box body, a controller body is arranged on the inner upper surface of the supporting piece, and a checking piece is arranged on the front surface of the box body. This fire alarm controller with safety protection, when needs inspection or use fire alarm controller, can be automatic should spill the fire alarm controller, do not use and can give it and accomodate, play the effect of protection, even when the height of fire alarm controller installation is higher, also can make things convenient for the staff to operate, when installing the fire alarm controller on the wall simultaneously, child is difficult for reaching of touching, and then improves the security.
Description
Technical Field
The utility model relates to the technical field of fire alarm controllers, in particular to a fire alarm controller with safety protection.
Background
The fire alarm controller is a heart of an automatic fire alarm system and can supply power to the detector, the fire alarm controller can be divided into area type and centralized type alarm systems and a control center alarm system according to monitoring areas, the area alarm controller is an automatic working device which is responsible for carrying out fire monitoring on one alarm area, and one alarm area comprises a plurality of detection areas.
Chinese publication is CN 213958203U's utility model discloses a fire alarm controller with safety protection relates to fire alarm controller technical field, including bottom plate and fire alarm controller body, two spouts have been seted up to the upper surface of bottom plate. The utility model has reasonable design structure, can rapidly reduce the temperature in the placing box through the matching arrangement of the blower, the vent hole, the liquid cooling plate, the air cooler and the connecting pipe, effectively avoids the situation that the fire alarm controller is difficult to discharge after generating heat, and prevents the damage to the fire alarm controller caused by overhigh temperature.
According to the above patent comparative example, the existing fire alarm controller has the following defects in the practical application process:
1. when the installation height of the fire alarm controller is higher, the working state of the fire alarm controller is inconvenient to observe by opening a door;
2. when the fire alarm controller is arranged on a wall, the rear side of the fire alarm controller is inconvenient to check when the fire alarm controller needs to be overhauled;
3. the existing fire alarm controller only uses a fan to dissipate heat, so that the heat dissipation effect is not ideal;
4. when the numerical value displayed on the fire alarm controller needs to be watched, the observation window on the outer box is used for observation, but after a long time, a lot of dust is generated on the observation window, so that the numerical value is not clear when being watched.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides a fire alarm controller with safety protection, which solves the problems that the working state of the fire alarm controller is inconvenient to observe by opening a door, when the fire alarm controller needs to be overhauled, the rear side of the fire alarm controller is inconvenient to check, the heat dissipation effect is not ideal, and the display numerical value on the fire alarm controller cannot be clearly seen after a long time.
In order to achieve the purpose, the utility model is realized by the following technical scheme: the utility model provides a fire alarm controller with safety protection, includes the box, the below of box is the open type, and the upper surface of box is provided with the driving piece, the downside of box is provided with support piece, support piece's inside upper surface is provided with the controller body, the front surface of box is provided with looks over the piece.
The driving piece includes the flange of difference fixed connection in box both sides upper surface, the upper surface of box is located position department fixed mounting between two flanges has biax servo motor, the equal horizontally connected with pivot of two output shafts of biax servo motor, two the pivot one end back of the body of the back of the body is rotated respectively and is passed two relative one sides of flange and fixedly connected with disc, the below both sides face of box all rotates and is connected with the toothed disc corresponding with the disc, two the equal perpendicular rotation in the front side edge that the back of the body was carried on the back of the body of disc is connected with the regulation pole, two the lower extreme of adjusting the pole rotates respectively and connects in the front side edge that the back of the body was carried on the back of the body of two toothed discs.
The support piece is including the base plate, the upper surface intermediate position department of base plate has seted up the concave groove, the inside in concave groove is provided with the slider, the both sides intermediate position department of base plate all is provided with the lug, two the upper surface of lug all is connected with the rack perpendicularly.
Preferably, the two gear discs are respectively meshed with the two racks, and the diameters of the gear discs are the same as the diameter of the circular disc.
Preferably, two one side that the rack is relative all is provided with the sand grip, the sliding tray with sand grip looks adaptation is all seted up to the both sides face of box, and two sand grips slidable mounting respectively are in the inside of two sliding trays.
Preferably, four corners of the upper surface of the base plate are respectively provided with a guide rod in a penetrating and sliding manner, and the upper ends of the guide rods are respectively fixedly connected to the four corners of the lower side of the box body.
Preferably, the saddle is including two spacing axles of fixed connection in the concave groove inboard, two cup joint slidable mounting between the surface of spacing axle and have the limiting plate, the controller body passes through bolt fixed mounting in the upper surface of limiting plate, the lower fixed surface of limiting plate is connected with the frame plate, and the upper surface intermediate position department of limiting plate has seted up the ventilation groove, the inside of ventilation groove is fixed and is provided with the ventilation net.
Preferably, a heat conduction box is arranged at the middle position inside the frame-shaped plate, a hollow groove is formed in the middle position of the upper surface of the heat conduction box, a support plate corresponding to the hollow groove is fixedly connected to the lower surface of the heat conduction box, a rotating motor is fixedly mounted on the lower surface of the support plate, and an output shaft of the rotating motor penetrates through the lower surface of the support plate and is fixedly connected with fan blades.
Preferably, the inside of heat conduction case is equipped with the coolant liquid, and one side upper surface corner of heat conduction case is provided with the inlet, the below front surface of heat conduction case is provided with the leakage fluid dram.
Preferably, the checking piece comprises a baffle which is rotatably connected to the front surface of the box body, a fixing rod is horizontally connected to the position, located above the baffle, of the front surface of the box body, a groove is formed in one end of the fixing rod, a guide wheel is rotatably mounted inside the groove, a steel wire rope is fixedly connected to the middle position of the front surface below the baffle, and the other end of the steel wire rope penetrates through the inside of the guide wheel in a sliding mode and is fixedly connected with a ball body.
Preferably, the front surface of the box body is provided with an observation port corresponding to the baffle.
Preferably, the rear surface below the baffle is fixedly connected with a magnet piece, and the box body is a stainless steel component.
Advantageous effects
The utility model provides a fire alarm controller with safety protection, which has the following beneficial effects compared with the prior art:
1. this fire alarm controller with safety protection, when needs inspection or use fire alarm controller, can be automatic should spill the fire alarm controller, do not use and can give it and accomodate, play the effect of protection, even when the height of fire alarm controller installation is higher, also can make things convenient for the staff to operate, when installing the fire alarm controller on the wall simultaneously, child is difficult for reaching of touching, and then improves the security.
2. This fire alarm controller with safety protection when overhauing fire alarm controller, can conveniently give the fire alarm controller and draw out, and then makes things convenient for the staff to carry out inspection work to fire alarm controller's the back.
3. This fire alarm controller with safety protection when fire alarm controller at the during operation, can play fine radiating action to it, has guaranteed fire alarm controller's life.
4. This fire alarm controller with safety protection, when needs look over the table on the fire alarm controller and show numerical value, the user only needs pulling wire rope can give the baffle and open, is convenient for look over, even after long-time the use, also can be clear see the table on the fire alarm controller and show numerical value.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the connection of the structure between the driving member and the supporting member according to the present invention;
FIG. 3 is a schematic view of a slider structure according to the present invention;
FIG. 4 is a schematic view of the internal structure of the frame-shaped plate of the present invention;
FIG. 5 is a schematic view of a viewer configuration of the present invention.
In the figure: 1. a box body; 2. a drive member; 21. a convex plate; 22. a double-shaft servo motor; 23. a rotating shaft; 24. a disc; 25. adjusting a rod; 26. a gear plate; 3. a support member; 31. a substrate; 32. a concave groove; 33. a slider; 331. a limiting shaft; 332. a limiting plate; 333. a frame-shaped plate; 334. a ventilation slot; 335. a ventilation net; 336. a heat conducting box; 337. hollowing out the grooves; 338. a support plate; 339. a rotating electric machine; 3310. a fan blade; 34. a bump; 35. a rack; 36. a guide bar; 4. a controller body; 5. checking the piece; 51. a baffle plate; 52. fixing the rod; 53. a groove; 54. a guide wheel; 55. a wire rope; 56. a sphere; 57. and a magnet piece.
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, the present invention provides a technical solution, and a fire alarm controller with safety protection includes a box 1, wherein a lower portion of the box 1 is open, a driving member 2 is disposed on an upper surface of the box 1, a supporting member 3 is disposed on a lower side of the box 1, a controller body 4 is disposed on an inner upper surface of the supporting member 3, and a viewing member 5 is disposed on a front surface of the box 1.
Referring to fig. 2, in the embodiment of the present invention, the driving member 2 includes protruding plates 21 respectively fixedly connected to the upper surfaces of two sides of the box 1, a dual-axis servo motor 22 is fixedly installed on the upper surface of the box 1 at a position between the two protruding plates 21, two output shafts of the dual-axis servo motor 22 are both horizontally connected with a rotating shaft 23, opposite ends of the two rotating shafts 23 respectively rotatably penetrate through opposite surfaces of the two protruding plates 21 and are fixedly connected with a circular disc 24, two lower side surfaces of the box 1 are both rotatably connected with gear discs 26 corresponding to the circular disc 24, edges of opposite front surfaces of the two circular discs 24 are both vertically rotatably connected with adjusting rods 25, lower ends of the two adjusting rods 25 are respectively rotatably connected to edges of opposite front surfaces of the two gear discs 26, the supporting member 3 includes a base plate 31, a concave groove 32 is formed in a middle position of the upper surface of the base plate 31, a slider 33 is disposed inside the concave groove 32, base plate 31's both sides intermediate position department all is provided with lug 34, the equal vertical connection of upper surface of two lugs 34 has rack 35, two toothed disc 26 respectively with two racks between 35 for the meshing, and toothed disc 26's diameter is the same with disc 24's diameter, two one sides that rack 35 is relative all are provided with the sand grip, the sliding tray with sand grip looks adaptation is all seted up to the both sides face of box 1, two sand grips sliding mounting respectively is in the inside of two sliding trays, when rack 35 removed, the sand grip can slide in the sliding tray, firm effect has been played to rack 35, four corners of upper surface of base plate 31 all run through slidable mounting and have guide bar 36, four corners of downside of fixed connection respectively in the upper end of each guide bar 36, guide bar 36 has played the effect of direction to base plate 31's removal.
Referring to fig. 3-4, in the embodiment of the present invention, the slider 33 includes two limiting shafts 331 fixedly connected to the inner sides of the concave groove 32, a limiting plate 332 is slidably mounted between the outer surfaces of the two limiting shafts 331, the controller body 4 is fixedly mounted on the upper surface of the limiting plate 332 by bolts, a frame-shaped plate 333 is fixedly connected to the lower surface of the limiting plate 332, a ventilation slot 334 is formed at the middle position of the upper surface of the limiting plate 332, a ventilation net 335 is fixedly disposed inside the ventilation slot 334, a heat conduction box 336 is disposed at the middle position inside the frame-shaped plate 333, a hollow slot 337 is disposed at the middle position of the upper surface of the heat conduction box 336, a support plate 338 corresponding to the hollow slot 337 is fixedly connected to the lower surface of the heat conduction box 336, a rotating motor 339 is fixedly mounted to the lower surface of the support plate 338, an output shaft of the rotating motor 339 passes through the lower surface of the support plate 338 and is fixedly connected to a fan blade 3310, the inside of heat conduction case 336 is equipped with the coolant liquid, and one side upper surface corner of heat conduction case 336 is provided with the inlet, and the below front surface of heat conduction case 336 is provided with the leakage fluid dram, and the inlet is for the convenience to add the coolant liquid, and the leakage fluid dram is for the convenience of the coolant liquid of discharging.
Referring to fig. 5, in the embodiment of the present invention, the checking piece 5 includes a baffle 51 rotatably connected to the front surface of the box 1, a fixing rod 52 is horizontally connected to the front surface of the box 1 at a position above the baffle 51, a groove 53 is formed at one end of the fixing rod 52, a guide wheel 54 is rotatably installed inside the groove 53, a steel wire rope 55 is fixedly connected to the middle position of the front surface below the baffle 51, the other end of the steel wire rope 55 slides through the inside of the guide wheel 54 and is fixedly connected with a sphere 56, an observation port corresponding to the baffle 51 is formed on the front surface of the box 1, a magnet piece 57 is fixedly connected to the rear surface below the baffle 51, the box 1 is a stainless steel component, and the box 1 is made of a stainless steel material so that the magnet piece 57 can be adsorbed on the box 1.
In the above, the model of the two-axis servo motor 22 is CH/V, and the model of the rotary motor 339 is GH/K.
And those not described in detail in this specification are well within the skill of those in the art.
The working principle is as follows: the double-shaft servo motor 22 drives the two rotating shafts 23 to rotate, the two rotating shafts 23 respectively drive the two circular discs 24 to rotate, the two circular discs 24 respectively drive the two adjusting rods 25 to do eccentric motion, the two adjusting rods 25 respectively drive the two gear discs 26 to rotate, the two gear discs 26 respectively drive the racks 35 meshed with the two gear discs to move up and down, and further drive the base plate 31 to slide on the guide rods 36, when the controller body 4 needs to be operated, the base plate 31 moves downwards to leak the controller body 4, if the back of the controller body 4 needs to be checked, a worker pulls the limiting plate 332 to pull out the limiting plate 332, so that the back of the controller body 4 can be checked, after the check is finished, the limiting plate 332 is pushed back to the original position, the double-shaft servo motor 22 is reversely rotated to enable the base plate 31 to move upwards, and the controller body 4 is stored, thus, the controller body 4 is dustproof;
further, when the controller body 4 works, the rotating motor 339 drives the fan blade 3310 to rotate, the fan blade 3310 blows air to the controller body 4 to play a role in heat dissipation, and meanwhile, since the inside of the heat conduction box 336 is filled with the cooling liquid which has a low temperature, the temperature of the cooling liquid is conducted to the inside of the hollow groove 337, so that the air blown out by the fan blade 3310 is cold air, and the heat dissipation effect can be improved;
further, when needing to look over the table on the controller body 4 and showing numerical value, hold spheroid 56 pulling wire rope 55, under the rotation of baffle 51, wire rope 55 will give baffle 51 and open, personnel can look over table through the viewing aperture on the box 1 and show numerical value like this, look over the back, loosen spheroid 56, under the gravity of baffle 51, baffle 51 can be closed automatically, and simultaneously under the magnetism of magnet 57, magnet 57 can adsorb on the box 1, guarantees the steadiness of baffle 51.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Claims (10)
1. The utility model provides a fire alarm controller with safety protection, includes box (1), its characterized in that: the lower part of the box body (1) is open, a driving piece (2) is arranged on the upper surface of the box body (1), a supporting piece (3) is arranged on the lower side of the box body (1), a controller body (4) is arranged on the upper surface inside the supporting piece (3), and a checking piece (5) is arranged on the front surface of the box body (1);
the driving piece (2) comprises convex plates (21) which are respectively and fixedly connected with the upper surfaces of the two sides of the box body (1), a double-shaft servo motor (22) is fixedly arranged on the upper surface of the box body (1) between the two convex plates (21), two output shafts of the double-shaft servo motor (22) are both horizontally connected with rotating shafts (23), one ends of the two rotating shafts (23) which are opposite to each other are respectively rotated to penetrate through the opposite surfaces of the two convex plates (21) and are fixedly connected with discs (24), gear discs (26) corresponding to the circular discs (24) are rotatably connected to two side faces below the box body (1), adjusting rods (25) are vertically and rotatably connected to edges of one faces of the two circular discs (24) on the back of the front sides, and the lower ends of the two adjusting rods (25) are respectively rotatably connected to edges of one faces of the two gear discs (26) on the back of the front sides;
support piece (3) including base plate (31), concave groove (32) have been seted up to the upper surface intermediate position department of base plate (31), the inside in concave groove (32) is provided with slider (33), the both sides intermediate position department of base plate (31) all is provided with lug (34), two the upper surface of lug (34) all is connected with rack (35) perpendicularly.
2. A fire alarm controller with safety protection as claimed in claim 1, wherein: the two gear discs (26) are respectively meshed with the two racks (35), and the diameters of the gear discs (26) are the same as the diameter of the circular disc (24).
3. A fire alarm controller with safety protection according to claim 1, wherein: two one side that rack (35) is relative all is provided with the sand grip, the sliding tray with sand grip looks adaptation is all seted up to the both sides face of box (1), and two sand grips slidable mounting are respectively in the inside of two sliding trays.
4. A fire alarm controller with safety protection according to claim 1, wherein: four corners of the upper surface of base plate (31) all run through slidable mounting and have guide bar (36), each the upper end of guide bar (36) is fixed connection in four corners of the downside of box (1) respectively.
5. A fire alarm controller with safety protection according to claim 1, wherein: slider (33) including two spacing axle (331) of fixed connection in concave groove (32) inboard, two cup joint slidable mounting between the surface of spacing axle (331) and have limiting plate (332), controller body (4) are through bolt fixed mounting in the upper surface of limiting plate (332), the lower fixed surface of limiting plate (332) is connected with frame plate (333), and the upper surface intermediate position department of limiting plate (332) has seted up ventilation groove (334), the inside of ventilation groove (334) is fixed and is provided with ventilation net (335).
6. A fire alarm controller with safety protection according to claim 5, wherein: the utility model discloses a fan blade of frame shaped plate, including frame shaped plate (333), the inside intermediate position department of frame shaped plate (333) is provided with heat conduction case (336), the upper surface intermediate position department of heat conduction case (336) is provided with fretwork groove (337), the lower surface fixed connection of heat conduction case (336) has extension board (338) corresponding with fretwork groove (337), the lower surface fixed mounting of extension board (338) has rotating electrical machines (339), the output shaft of rotating electrical machines (339) rotates and passes the lower surface of extension board (338) and fixedly connected with flabellum (3310).
7. A fire alarm controller with safety protection according to claim 6, wherein: the cooling liquid is filled in the heat conduction box (336), a liquid inlet is formed in the corner of the upper surface of one side of the heat conduction box (336), and a liquid outlet is formed in the front surface of the lower portion of the heat conduction box (336).
8. A fire alarm controller with safety protection according to claim 1, wherein: look over piece (5) including rotating baffle (51) of connecting in box (1) front surface, the top position department horizontally connect of the front surface of box (1) position in baffle (51) has dead lever (52), recess (53) are seted up to the one end of dead lever (52), leading wheel (54) are installed in the inside rotation of recess (53), below front surface intermediate position department fixedly connected with wire rope (55) of baffle (51), the other end of wire rope (55) slides and passes inside and fixedly connected with spheroid (56) of leading wheel (54).
9. A fire alarm controller with safety protection according to claim 8, wherein: the front surface of the box body (1) is provided with an observation port corresponding to the baffle (51).
10. A fire alarm controller with safety protection according to claim 8, wherein: the magnet piece (57) is fixedly connected to the rear surface below the baffle plate (51), and the box body (1) is a stainless steel component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210155237.1A CN114495403B (en) | 2022-02-21 | 2022-02-21 | Fire alarm controller with safety protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210155237.1A CN114495403B (en) | 2022-02-21 | 2022-02-21 | Fire alarm controller with safety protection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114495403A true CN114495403A (en) | 2022-05-13 |
| CN114495403B CN114495403B (en) | 2023-12-19 |
Family
ID=81482224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210155237.1A Active CN114495403B (en) | 2022-02-21 | 2022-02-21 | Fire alarm controller with safety protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114495403B (en) |
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| CN213394542U (en) * | 2020-10-27 | 2021-06-08 | 广州市广碳碳排放开发投资有限公司 | A visual carbon dioxide monitoring alarm device for forestry |
| CN214855463U (en) * | 2021-06-29 | 2021-11-26 | 安徽商贸职业技术学院 | Shockproof museum leads to cabinet |
| CN113794125A (en) * | 2020-10-09 | 2021-12-14 | 怀化建南电子科技有限公司 | Conveniently look over ammeter case of ammeter reading |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012251338A (en) * | 2011-06-01 | 2012-12-20 | Hitachi Zosen Corp | Floating body type flap gate |
| CN108453062A (en) * | 2018-02-01 | 2018-08-28 | 南华大学 | Packages method based on speeds match principle |
| CN209674488U (en) * | 2019-06-05 | 2019-11-22 | 张惠慧 | A kind of fire hazard monitoring warning device |
| CN210680463U (en) * | 2019-07-05 | 2020-06-05 | 中铁电气化局集团有限公司 | Clamping line type contact net elastic sling installation device |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN114495403B (en) | 2023-12-19 |
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