CN108478977A - A kind of automatic fire extinguisher for diesel engine monorail crane locomotive - Google Patents
A kind of automatic fire extinguisher for diesel engine monorail crane locomotive Download PDFInfo
- Publication number
- CN108478977A CN108478977A CN201810241309.8A CN201810241309A CN108478977A CN 108478977 A CN108478977 A CN 108478977A CN 201810241309 A CN201810241309 A CN 201810241309A CN 108478977 A CN108478977 A CN 108478977A
- Authority
- CN
- China
- Prior art keywords
- diesel engine
- fire extinguisher
- connector
- monorail crane
- outlet
- 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
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/36—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device
- A62C37/38—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/02—Nozzles specially adapted for fire-extinguishing
Abstract
The present invention relates to the fire in special space to put out equipment, more particularly to a kind of automatic fire extinguisher for diesel engine monorail crane locomotive automatically.It includes foamite container, fuel factor releasing unit, fire extinguisher nozzle and pneumatic operated valve；The entrance of the pneumatic operated valve is connected to the foamite container；The fuel factor releasing unit is connected to by control pipe with the pressure relief opening of the pneumatic operated valve；The outlet that the fire extinguisher nozzle passes through fire extinguishing tube and the pneumatic operated valve；The fuel factor releasing unit includes control pin, fire detector element and the first connector, the control pin is fixed on by the fire detector element in the outlet of first connector, the import of outlet for blocking first connector, first connector is connected to the control pipe.Automatic fire extinguisher provided by the present invention for diesel engine monorail crane locomotive detects fire using mechanical structure device, realizes the automatic startup of fire extinguishing system by fuel factor releasing unit.
Description
Technical field
The present invention relates to the fire in special space to put out equipment automatically, more particularly to a kind of to be used for diesel engine single-rail crane
The automatic fire extinguisher of vehicle.
Background technology
Monorail crane locomotive belongs to one kind of underground auxiliary conveying equipments, it has hangs rail transport in the air, not by tunnel
Matter conditionality, it is adaptable, load and unload the features such as material facilitates.Material, personnel or equipment can not only be transported, realizes a variety of transports
Scheme can also complete the tasks such as promotion and the lifting of underground equipment.It is mining with the development of new and high technology and modern production
Monorail crane locomotive has been more and more widely used within coal mines as a kind of convenient assistant conveyance tool.Due in coal mine
The equipment run in mine there are certain requirements fire prevention, explosion-proof performance, and common vehicle fire extinguishing apparatus is not useful in single track
In loop wheel machine vehicle, therefore being badly in need of one kind can be suitable for monorail crane locomotive, the high extinguishing device of automation degree.
Existing monorail crane locomotive automatic fire extinguisher, to be mounted with the extinguishing device of intelligent control, when fire behavior occurs,
The intelligent detection and control system of temperature dependent detector, gas componant detector, control chip and solenoid valve etc. mechanisms composition,
This system price is expensive, and is possible to be burned when on fire or can not normally start because of other fortuitous events, example
The power-supply system of intelligent detection and control system is broken in being run such as monorail crane locomotive, automatic fire extinguishing system is caused to fail.
Invention content
It is existing to solve the purpose of the present invention is to provide a kind of automatic fire extinguisher for diesel engine monorail crane locomotive
Fragile, the of high cost problem of automatic fire extinguisher for diesel engine monorail crane locomotive.
The purpose of the present invention is what is realized by following technical proposals：
A kind of automatic fire extinguisher for diesel engine monorail crane locomotive, it is characterised in that：Including foamite container, thermal effect
Answer releasing unit, fire extinguisher nozzle and pneumatic operated valve；The entrance of the pneumatic operated valve is connected to the foamite container；The fuel factor
Releasing unit is connected to by control pipe with the pressure relief opening of the pneumatic operated valve, filling high pressure gas in the control pipe；The fire extinguishing
The outlet that device nozzle passes through fire extinguishing tube and the pneumatic operated valve；The fuel factor releasing unit includes control pin, detection
Element and the first connector, the control pin are fixed on by the fire detector element in the outlet of first connector,
The import of outlet for blocking first connector, first connector is connected to the control pipe.
Further, first connector is bolted with the control pipe.
Further, further include manual releasing unit, the manual releasing unit is connected to the control pipe.
Further, the manual releasing unit includes release button, locating ring and the second connector；The release button
In the outlet of second connector, the opening and closing of the outlet for controlling second connector, the positioning ring set
It is located in the release button, is pressed for limiting the release button；The outlet of second connector and the control pipe
Connection.
Further, further include pneumatic cut-off valve, the pressure relief opening of the pneumatic cut-off valve by the control pipe with it is described
The pressure relief opening of pneumatic operated valve is connected to, and the pneumatic cut-off valve is for cutting off Fuel Injection Mechanism of Diesel Engine.
Further, the outlet of the fire extinguisher nozzle is equipped with protective cap.
Further, there are two the fire extinguisher nozzle is set, two fire extinguisher nozzles are separately positioned on diesel engine
On top and diesel fuel pipe.
Further, there are two fuel factor releasing unit is set, two fuel factor releasing units are separately positioned on diesel oil
On the top and diesel fuel pipe of machine.
Further, the nitrogen that the high pressure gas in the control pipe is 1.2 to 1.5MPa.
Further, heptafluoro-propane is filled in the foamite container.
The present invention has the following advantages that compared with prior art：
1. a kind of automatic fire extinguisher for diesel engine monorail crane locomotive of the present invention comprising foamite container,
Fuel factor releasing unit, fire extinguisher nozzle and pneumatic operated valve；The entrance of the pneumatic operated valve is connected to the foamite container；The heat
Effect releasing unit is connected to by control pipe with the pressure relief opening of the pneumatic operated valve, filling high pressure gas in the control pipe；It is described
The outlet that fire extinguisher nozzle passes through fire extinguishing tube and the pneumatic operated valve；The fuel factor releasing unit includes control pin, fire
Detecting element and the first connector, the control pin are fixed on the outlet of first connector by the fire detector element
On, the import of the outlet for blocking first connector, first connector is connected to the control pipe；Fire occurs
When, because high temperature fire detector element fuses, control pin is detached from the first connector, and the high pressure gas in control pipe is released by fuel factor
Unit release is put, gas is discharged in the pressure relief opening of pneumatic operated valve so that the import of pneumatic operated valve and the outlet of pneumatic operated valve, extinguishing chemical hold
Extinguishing chemical in device is sprayed by fire extinguishing tube and fire extinguisher nozzle, realizes extinguishing effect；The present invention is visited using mechanical structure device
Fire detecting calamity realizes the automatic startup of fire extinguishing system, does not depend on electric elements, simple in structure, at low cost, sound construction, not rapid wear
It is bad.
Description of the drawings
Fig. 1 is the automatic fire extinguisher device connection figure for diesel engine monorail crane locomotive of the present invention；
Fig. 2 is fuel factor releasing unit structural schematic diagram of the present invention；
Fig. 3 is manual releasing cellular construction schematic diagram of the present invention；
Fig. 4 is fire extinguisher nozzle structural schematic diagram of the present invention；
Wherein：1- fuel factors releasing unit, 101- control pins, 102- fire detector elements, the first connectors of 103-, 104-
Bolt, 2- control pipes, 3- foamite containers, 4- fire extinguishing tubes, 5- fire extinguisher nozzles, 501- protective caps, 6- pneumatic operated valves, 7- are released manually
Put unit, 701- locating rings, 702- release buttons, the second connectors of 703-, 8- pneumatic cut-off valves.
Specific implementation mode
Technical scheme of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
The every other embodiment that personnel are obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term "center", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for the description present invention and simplify description, do not indicate or imply the indicated device or element must have a particular orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for description purposes only, and is not understood to indicate or imply relative importance.
Referring to Fig. 1, Fig. 2, a kind of automatic fire extinguisher for diesel engine monorail crane locomotive comprising foamite container 3,
Fuel factor releasing unit 1, fire extinguisher nozzle 5 and pneumatic operated valve 6；The entrance of the pneumatic operated valve is connected to the foamite container；Institute
It states fuel factor releasing unit to be connected to the pressure relief opening of the pneumatic operated valve by control pipe 2, filling high pressure gas in the control pipe；
The outlet that the fire extinguisher nozzle passes through fire extinguishing tube 4 and the pneumatic operated valve；The fuel factor releasing unit includes control pin
101, fire detector element 102 and the first connector 103, the control pin are fixed on described by the fire detector element
In the outlet of a connection piece, the outlet for blocking first connector, import and the control of first connector
Pipe is connected to；When fire occurs, because fire detector element described in high temperature fuses, the fire detector element is less than 100 by fusing point
Metal is made, and the control pin is detached from first connector, and the high pressure gas in the control pipe is released by the fuel factor
Unit release is put, gas pressure reduces in the control pipe, and then gas is discharged in the pressure relief opening of the pneumatic operated valve so that the gas
The outlet of the import and the pneumatic operated valve of dynamic valve, extinguishing chemical in the foamite container pass through the fire extinguishing tube and described
Fire extinguisher nozzle sprays, and realizes extinguishing effect；The present invention detects fire using mechanical structure device, realizes the automatic of fire extinguishing system
Start, does not depend on electric elements, simple in structure, at low cost, sound construction is hardly damaged.
Referring to Fig. 2, the first connector of the present invention is connect with the control pipe by bolt 104；Because fire occurs
Afterwards, the fuel factor releasing unit release, after fire extinguishing, the present invention, which reuses, needs replacing the fuel factor releasing unit, and
And fire does not occur, and in order to ensure that the normal operation of system, the fuel factor releasing unit are also required to regularly replace, the use
It is bolted, is convenient for the replacement of the fuel factor releasing unit.
Referring to Fig. 1, the invention also includes manual releasing unit 7, the manual releasing unit is connected to the control pipe, institute
Manual releasing unit is stated for high pressure gas in control pipe described in manual releasing；Pass through manual releasing unit manual releasing institute
High pressure gas in control pipe is stated, realization manually boots fire extinguishing system, fire has occurred in fuel factor releasing unit failure or just
When fuel factor releasing unit described in calamity does not discharge also, the manual releasing unit starting fire extinguishing system can be passed through.
Referring to Fig. 1, Fig. 3, manual releasing unit of the present invention includes release button 702, the connection of locating ring 701 and second
Part 703；The release button is mounted in the outlet of second connector, the outlet for controlling second connector
Opening and closing, the locating ring are set in the release button, are pressed for limiting the release button；Second connector
Outlet is connected to the control pipe；The locating ring is extracted, presses the release button, gas in control pipe described in manual releasing
Body, the locating ring can prevent from touching the release button unintentionally, cause gas in the control pipe to discharge, cause to miss
Operation.
Referring to Fig. 1, the invention also includes pneumatic cut-off valve 8, the pressure relief opening of the pneumatic cut-off valve passes through the control pipe
It is connected to the pressure relief opening of the pneumatic operated valve, the pneumatic cut-off valve is for cutting off Fuel Injection Mechanism of Diesel Engine；The startup stop valve installation
On the oil line pipe of the diesel engine, after the gas in the control pipe discharges, the pressure relief opening row of the pneumatic cut-off valve
Go out gas, cut off Fuel Injection Mechanism of Diesel Engine, closes diesel engine, prevent fire incident from expanding.
Referring to Fig. 4, the outlet of fire extinguisher nozzle of the present invention is equipped with protective cap 501；The protective cap can prevent
Sundries blocks the fire extinguisher nozzle.
Referring to Fig. 1, there are two fire extinguisher nozzle of the present invention is set, two fire extinguisher nozzles are separately positioned on diesel oil
On the top and diesel fuel pipe of machine；There are two fuel factor releasing unit of the present invention is set, two fuel factor releasing units
It is separately positioned on the top and diesel fuel pipe of diesel engine；The top of diesel engine and diesel fuel pipe are easy in diesel engine
The position that fire occurs needs to monitor as emphasis, and the timely discovery of fire may be implemented, put out in time.
Referring to Fig. 1, nitrogen that high pressure gas in control pipe of the present invention is 1.2 to 1.5MPa；Nitrogen is non-combustible
Gas, when release, will not cause combustion-supporting, and nitrogen is easy to get, at low cost.
Referring to Fig. 1, heptafluoro-propane is filled in foamite container of the present invention；Heptafluoro-propane is that one kind is with inhibition
The main clean gas chemical for having physics fire extinguishing effect concurrently, it is colourless, tasteless, less toxic, non-conductive, does not pollute by protection pair
As, property and accurate facility will not be damaged, can reliably be stamped out a fire with lower extinguishing concentration, storage space is small,
Critical-temperature is high, and critical pressure is low, the storage of liquefiable at normal temperatures；Particle or oily residue are free of after release, it is smelly to air
Oxygen layer will not cause the blocking of the fire extinguishing tube and the fire extinguisher nozzle without destruction.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, it will be understood by those of ordinary skill in the art that：Its according to
So can with technical scheme described in the above embodiments is modified, either to which part or all technical features into
Row equivalent replacement；And these modifications or replacements, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of automatic fire extinguisher for diesel engine monorail crane locomotive, it is characterised in that：Including foamite container, fuel factor
Releasing unit, fire extinguisher nozzle and pneumatic operated valve；The entrance of the pneumatic operated valve is connected to the foamite container；The fuel factor is released
It puts unit to be connected to the pressure relief opening of the pneumatic operated valve by control pipe, filling high pressure gas in the control pipe；The fire extinguisher
The outlet that nozzle passes through fire extinguishing tube and the pneumatic operated valve；The fuel factor releasing unit includes control pin, detection member
Part and the first connector, the control pin are fixed on by the fire detector element in the outlet of first connector, are used
In the outlet for blocking first connector, the import of first connector is connected to the control pipe.
2. the automatic fire extinguisher according to claim 1 for diesel engine monorail crane locomotive, it is characterised in that：Described
A connection piece is bolted with the control pipe.
3. the automatic fire extinguisher according to claim 1 for diesel engine monorail crane locomotive, it is characterised in that：Further include
Manual releasing unit, the manual releasing unit are connected to the control pipe.
4. the automatic fire extinguisher according to claim 3 for diesel engine monorail crane locomotive, it is characterised in that：The hand
Dynamic releasing unit includes release button, locating ring and the second connector；The release button is mounted on second connector
In outlet, the opening and closing of the outlet for controlling second connector, the locating ring is set in the release button, is used for
The release button is limited to press；The outlet of second connector is connected to the control pipe.
5. the automatic fire extinguisher according to claim 1 for diesel engine monorail crane locomotive, it is characterised in that：Further include
The pressure relief opening of pneumatic cut-off valve, the pneumatic cut-off valve is connected to by the control pipe with the pressure relief opening of the pneumatic operated valve, described
Pneumatic cut-off valve is for cutting off Fuel Injection Mechanism of Diesel Engine.
6. the automatic fire extinguisher according to claim 1 for diesel engine monorail crane locomotive, it is characterised in that：It is described to go out
The outlet of firearm nozzle is equipped with protective cap.
7. the automatic fire extinguisher according to claim 1 for diesel engine monorail crane locomotive, it is characterised in that：It is described to go out
There are two firearm nozzle is set, two fire extinguisher nozzles are separately positioned on the top and diesel fuel pipe of diesel engine.
8. the automatic fire extinguisher according to claim 1 for diesel engine monorail crane locomotive, it is characterised in that：Fuel factor
There are two releasing unit is set, two fuel factor releasing units are separately positioned on top and the diesel fuel pipe of diesel engine
On.
9. the automatic fire extinguisher according to claim 1 for diesel engine monorail crane locomotive, it is characterised in that：The control
The nitrogen that high pressure gas in tubulation is 1.2 to 1.5MPa.
10. according to any automatic fire extinguishers for diesel engine monorail crane locomotive of claim 1-9, feature exists
In：Heptafluoro-propane is filled in the foamite container.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810241309.8A CN108478977B (en) | 2018-03-22 | 2018-03-22 | Automatic fire extinguishing device for diesel engine monorail crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810241309.8A CN108478977B (en) | 2018-03-22 | 2018-03-22 | Automatic fire extinguishing device for diesel engine monorail crane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108478977A true CN108478977A (en) | 2018-09-04 |
| CN108478977B CN108478977B (en) | 2020-11-03 |
Family
ID=63319317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810241309.8A Active CN108478977B (en) | 2018-03-22 | 2018-03-22 | Automatic fire extinguishing device for diesel engine monorail crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108478977B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2605681A1 (en) * | 1976-02-13 | 1977-08-18 | Wilhelm Schlingmann Fahrzeug U | Remote control for tractor PTO - using pneumatic valves with sequence controlled by pressure fall across throttle |
| CN201727866U (en) * | 2010-06-28 | 2011-02-02 | 杨杨 | Fire protection system for rail tank car oil loading racks |
| CN202236985U (en) * | 2011-09-21 | 2012-05-30 | 重庆大江工业有限责任公司 | Integrated electrically controlled pneumatic waterway system of wheeled armored fire-fighting truck |
| CN203060631U (en) * | 2013-01-31 | 2013-07-17 | 北京凯润机电设备制造有限责任公司 | Automatic fire-extinguishing device for monorail cranes |
| CN203500162U (en) * | 2013-10-14 | 2014-03-26 | 安徽中捷矿山运输设备有限责任公司 | Single-rail hanging haulage motor pneumatic control system |
| CN104436506A (en) * | 2013-12-30 | 2015-03-25 | 青岛中阳消防科技有限公司 | Fire extinguishing method by adopting double fire detection tube starting manner and fire extinguishing device thereof with double fire detection tubes |
| CN204543364U (en) * | 2015-04-17 | 2015-08-12 | 重庆力杰消防工程有限公司 | Based on the multi-mode control type fire-smothering gear that extinguishing agent pressure starts |
| CN205055263U (en) * | 2015-09-11 | 2016-03-02 | 浙江利高消防科技有限公司 | Kitchen equipment extinguishing device based on gas cylinder drive formula |
| CN206535041U (en) * | 2017-01-24 | 2017-10-03 | 福建天广消防有限公司 | A kind of heptafluoro-propane temperature-sensitive self-starting extinguishing device |
| CN206675857U (en) * | 2017-04-01 | 2017-11-28 | 北京天康达科技发展有限公司 | A kind of hand-held perfluorethyl isopropyl ketone extinguishing device |
-
2018
- 2018-03-22 CN CN201810241309.8A patent/CN108478977B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2605681A1 (en) * | 1976-02-13 | 1977-08-18 | Wilhelm Schlingmann Fahrzeug U | Remote control for tractor PTO - using pneumatic valves with sequence controlled by pressure fall across throttle |
| CN201727866U (en) * | 2010-06-28 | 2011-02-02 | 杨杨 | Fire protection system for rail tank car oil loading racks |
| CN202236985U (en) * | 2011-09-21 | 2012-05-30 | 重庆大江工业有限责任公司 | Integrated electrically controlled pneumatic waterway system of wheeled armored fire-fighting truck |
| CN203060631U (en) * | 2013-01-31 | 2013-07-17 | 北京凯润机电设备制造有限责任公司 | Automatic fire-extinguishing device for monorail cranes |
| CN203500162U (en) * | 2013-10-14 | 2014-03-26 | 安徽中捷矿山运输设备有限责任公司 | Single-rail hanging haulage motor pneumatic control system |
| CN104436506A (en) * | 2013-12-30 | 2015-03-25 | 青岛中阳消防科技有限公司 | Fire extinguishing method by adopting double fire detection tube starting manner and fire extinguishing device thereof with double fire detection tubes |
| CN204543364U (en) * | 2015-04-17 | 2015-08-12 | 重庆力杰消防工程有限公司 | Based on the multi-mode control type fire-smothering gear that extinguishing agent pressure starts |
| CN205055263U (en) * | 2015-09-11 | 2016-03-02 | 浙江利高消防科技有限公司 | Kitchen equipment extinguishing device based on gas cylinder drive formula |
| CN206535041U (en) * | 2017-01-24 | 2017-10-03 | 福建天广消防有限公司 | A kind of heptafluoro-propane temperature-sensitive self-starting extinguishing device |
| CN206675857U (en) * | 2017-04-01 | 2017-11-28 | 北京天康达科技发展有限公司 | A kind of hand-held perfluorethyl isopropyl ketone extinguishing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108478977B (en) | 2020-11-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202876161U (en) | Automatic explosion suppression device of inflammable gas delivery pipeline | |
| CN101101085A (en) | Liquid ammonia storage tank remote control monitoring and automatic sprinkling system realization method | |
| CN205598471U (en) | Safe battery box and safety protection system thereof | |
| CN104110582B (en) | Safe delivery system for coal bed gas | |
| CN205598472U (en) | Vehicle safety battery box and vehicle power safety coefficient | |
| CN202223801U (en) | Automatic cabinet-type fire fighting device | |
| CN102061918A (en) | Coal mining method for co-mining gas in mine | |
| CN101701525A (en) | Fully automatic gas explosion proof equipment | |
| CN105169584A (en) | Multistage response type automatic extinguishing device and use method | |
| CN102728016A (en) | Oil-discharge nitrogen-injection fire extinguishing system | |
| CN102582984A (en) | Safety protection system and safety protection method for floating-roof oil tank based on active nitrogen filling | |
| CN106640177A (en) | Mining movable liquid carbon dioxide fire preventing and extinguishing system | |
| CN106628011A (en) | Safety device for interface of ship and shore on wharf | |
| CN202575116U (en) | Floating-roof oil tank safeguard system based on active filling of nitrogen | |
| CN110657270B (en) | Built-in gravity type safety valve for movable liquid ammonia liquid chlorine bottle and use method | |
| CN108478977A (en) | A kind of automatic fire extinguisher for diesel engine monorail crane locomotive | |
| CN101559269B (en) | Active nitrogen-rich fire-proof device | |
| CN101813000B (en) | Equipment for preventing gas and coal dust explosion on working face | |
| CN203255567U (en) | Cylindrical silo protection device | |
| CN205948873U (en) | Carbide feed bin nitrogen protection device | |
| CN201724778U (en) | Compressed air low-pressure automatic alarm system | |
| CN203489006U (en) | Safe conveying system for coalbed methane | |
| CN109439370B (en) | Burner cooling water protection device and method | |
| KR20130002307U (en) | Purge box for fluorine supply | |
| CN203060631U (en) | Automatic fire-extinguishing device for monorail cranes |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Gao Jie Inventor after: Gao Jian Inventor before: Shang Xuhai Inventor before: Gao Jian |