CN113332651A - Fire extinguishing device - Google Patents
Fire extinguishing device Download PDFInfo
- Publication number
- CN113332651A CN113332651A CN202110646667.9A CN202110646667A CN113332651A CN 113332651 A CN113332651 A CN 113332651A CN 202110646667 A CN202110646667 A CN 202110646667A CN 113332651 A CN113332651 A CN 113332651A
- Authority
- CN
- China
- Prior art keywords
- fire extinguishing
- drive
- driving mechanism
- ball
- driving
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Classifications
-
- 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
- A62C31/03—Nozzles specially adapted for fire-extinguishing adjustable, e.g. from spray to jet or vice versa
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/28—Accessories for delivery devices, e.g. supports
-
- 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
- A62C37/40—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 with electric connection between sensor and actuator
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- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The invention belongs to the technical field of fire fighting equipment, and discloses a fire extinguishing device which comprises a fire extinguishing ball, a lifting driving mechanism and a translation driving mechanism, wherein the fire extinguishing ball used for executing fire extinguishing action is connected to an execution end of the lifting driving mechanism, and the lifting driving mechanism is connected to an execution end of the translation driving mechanism. The lifting driving mechanism can drive the fire extinguishing ball to lift, the translation driving mechanism can drive the lifting driving mechanism and the fire extinguishing ball to translate, and then the fire extinguishing ball can move on two degrees of freedom, and is convenient to maintain and replace.
Description
Technical Field
The invention relates to the technical field of fire fighting equipment, in particular to a fire extinguishing device.
Background
The fire extinguishing ball burns the winding wire of putting out a fire of top layer after meeting the naked light, drives the automatic dry powder that sprays of kernel outburst device afterwards, reaches automatic fire extinguishing's effect, in all kinds of factory buildings, stations such as workshop, block terminal, all need hang a plurality of fire extinguishing balls directly over all kinds of equipment to satisfy the fire control requirement. In the prior art, when the fire extinguishing ball is regularly checked, maintained and replaced, in order to ensure safety and prevent safety accidents such as personal casualties, transformer, power distribution cabinet short circuit, grounding, equipment damage and the like caused by careless dropping in the process of checking, picking and hanging the fire extinguishing ball by ascending a height, maintenance personnel can carry out maintenance and replacement work of the fire extinguishing ball after equipment below is powered off and stopped. Under such adverse conditions, the fire extinguishing ball may be out of date for maintenance or the fire extinguishing ball may be replaced, resulting in frequent power failure and outage of the equipment.
Based on the above situation, it is desired to design a fire extinguishing apparatus to solve the above problems.
Disclosure of Invention
One object of the present invention is: the utility model provides a fire extinguishing apparatus can realize the removal of fire extinguishing ball, and then is convenient for maintain and change fire extinguishing ball.
In order to achieve the purpose, the invention adopts the following technical scheme:
a fire suppression apparatus, comprising:
the fire extinguishing ball is used for executing fire extinguishing action;
the fire extinguishing ball is connected to an execution end of the lifting driving mechanism, and the lifting driving mechanism can drive the fire extinguishing ball to lift;
the fire extinguishing ball device comprises a translation driving mechanism, a lifting driving mechanism and a fire extinguishing ball, wherein the lifting driving mechanism is connected to an execution end of the translation driving mechanism, and the translation driving mechanism can drive the lifting driving mechanism and the fire extinguishing ball to translate.
As a preferable aspect, the elevation driving mechanism includes:
the first driving piece is arranged at the execution end of the translation driving mechanism;
wire rope, one end is connected the output of first driving piece, and the other end is connected with the ball of putting out a fire, first driving piece can the rolling wire rope is in order to draw and rise the ball of putting out a fire, perhaps releases wire rope descends the ball of putting out a fire.
Preferably, the lifting driving mechanism further includes a rope winding member, the rope winding member is connected to an output end of the first driving member in a transmission manner, the one end of the rope winding member is wound around a peripheral portion of the rope winding member, and the first driving member can drive the rope winding member to rotate.
As a preferred scheme, extinguishing device still includes the locating part, the locating part is located the serving and put out a fire between the ball, the locating part can restrict the ball of putting out a fire is close to the serving.
Preferably, the lifting driving mechanism further comprises a U-shaped cover, the U-shaped cover is installed on the outer sides of the first driving member and the rope winding member to shield the first driving member and the rope winding member, and the steel wire rope penetrates through the U-shaped cover in a sliding mode and is connected with the fire extinguishing ball.
As a preferable aspect, the translation drive mechanism includes:
a second driving member;
the screw rod is in transmission connection with the output end of the second driving piece, and the second driving piece can drive the screw rod to rotate;
the nut is sleeved on the lead screw in a transmission manner, the lead screw can drive the nut to move, and the lifting driving mechanism is arranged on the nut.
As a preferable aspect, the translation driving mechanism further includes:
the guide rail is arranged in parallel to the lead screw;
the sliding block is connected with the nut and is in sliding connection with the guide rail, and the lifting driving mechanism is installed on the sliding block.
As a preferred scheme, the second driving member extends along the vertical direction and is perpendicular to the lead screw, and the translational driving mechanism further comprises a transmission assembly, wherein the transmission assembly is in transmission connection with the output end of the second driving member and the lead screw so as to convert the transmission direction
Preferably, the transmission assembly comprises a first bevel gear and a second bevel gear, the first bevel gear is in transmission connection with the output end of the second driving member, the second bevel gear is meshed with the first bevel gear, and the second bevel gear is in transmission connection with the lead screw.
As a preferred scheme, the fire extinguishing apparatus further comprises a position sensing member, the position sensing member is mounted on the translation driving mechanism and is in communication connection with the lifting driving mechanism, and the position sensing member can sense the position of the lifting driving mechanism so as to control the starting and stopping of the lifting driving mechanism.
The invention has the beneficial effects that: the utility model provides a fire extinguishing apparatus, when needs are maintained and are changed the ball of putting out a fire, utilize translation actuating mechanism to keep away from power equipment's top with ball of putting out a fire and lift actuating mechanism translation earlier, reuse lift actuating mechanism drive ball of putting out a fire and descend, be convenient for maintain and change the ball of putting out a fire.
Drawings
The invention is explained in more detail below with reference to the figures and examples.
FIG. 1 is a schematic structural diagram of a fire extinguishing apparatus according to an embodiment;
FIG. 2 is an exploded view of the fire suppression apparatus according to the embodiment;
fig. 3 is a front view of the fire extinguishing apparatus according to the embodiment.
In fig. 1 to 3:
1. fire extinguishing balls;
2. a lifting drive mechanism; 21. a first driving member; 22. a wire rope; 23. a rope winding member; 24. a U-shaped cover;
3. a translation drive mechanism; 31. a second driving member; 32. a guide rail; 33. a slider;
4. and a limiting member.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
The first embodiment is as follows:
as shown in fig. 1-2, the present embodiment provides a fire extinguishing apparatus, which includes a fire extinguishing ball 1, a lifting driving mechanism 2 and a translation driving mechanism 3, wherein the fire extinguishing ball 1 is used for performing fire extinguishing action; the fire extinguishing ball 1 is connected with an execution end of the lifting driving mechanism 2, and the lifting driving mechanism 2 can drive the fire extinguishing ball 1 to lift; the lifting driving mechanism 2 is connected to the execution end of the translation driving mechanism 3, and the translation driving mechanism 3 can drive the lifting driving mechanism 2 and the fire extinguishing ball 1 to translate. When the fire extinguishing ball 1 needs to be maintained and replaced, the fire extinguishing ball 1 and the lifting driving mechanism 2 are firstly translated by the translation driving mechanism 3 to be far away from the upper part of the power equipment, and then the lifting driving mechanism 2 is used for driving the fire extinguishing ball 1 to descend, so that the maintenance and replacement of the fire extinguishing ball 1 are facilitated, in the process, the normal operation of the power equipment (a transformer, a power distribution cabinet and the like) below is not influenced, and the safety distance between an operator and the electrified power equipment can be kept; after the maintenance and the replacement of the fire extinguishing ball 1 are finished, the fire extinguishing ball 1 is reset by the lifting driving mechanism 2 and the translation driving mechanism 3.
Specifically, the lifting driving mechanism 2 comprises a first driving member 21 and a steel wire rope 22, and the first driving member 21 is mounted at an execution end of the translation driving mechanism 3; one end of the steel wire rope 22 is connected to the output end of the first driving piece 21, the other end of the steel wire rope 22 is connected with the fire extinguishing ball 1, and the first driving piece 21 can wind the steel wire rope 22 to lift the fire extinguishing ball 1 or release the steel wire rope 22 to lower the fire extinguishing ball 1. The first driving member 21 may be configured as an electric motor or a pneumatic motor, the first driving member 21 in this embodiment is an electric motor, and one end of the steel wire 22 is connected to an output end of the electric motor. When the motor rotates forwards, the steel wire rope 22 is wound to pull up the fire extinguishing ball 1; when the motor is reversed, the wire rope 22 is released to lower the fireball 1. In other embodiments of the present invention, the lifting driving mechanism 2 may also be configured as a telescopic rod, the telescopic rod is installed at the executing end of the translation driving mechanism 3, and the fire extinguishing ball 1 is connected to the tail end of the telescopic rod, so as to achieve the same function.
In a preferred embodiment, the lifting drive mechanism 2 further includes a rope winding member 23, the rope winding member 23 is connected to the output end of the first drive member 21 in a transmission manner, one end of the wire rope 22 is wound around the circumference of the rope winding member 23, and the first drive member 21 can drive the rope winding member 23 to rotate. Rope rolling member 23 can set up to serving as a rope winder or straight-bar, and rope rolling member 23 of this embodiment is the rope winder, and wire rope 22 is fixed and twine on the rope winder, and first driving piece 21 is through the rotatory wire rope 22 that comes the rolling or release of drive rope winder, prevents that wire rope 22 from knoing, has improved the reliability.
As a preferred embodiment, the fire extinguishing apparatus further includes a limiting member 4, the limiting member 4 is located between the rope rolling member 23 and the fire extinguishing ball 1, and the limiting member 4 can limit the fire extinguishing ball 1 from approaching the rope rolling member 23. When serving as the rope winding piece 23 to wind the steel wire rope 22 so as to lift the fire extinguishing ball 1, the limiting piece 4 can abut against the fire extinguishing ball 1 to limit the fire extinguishing ball 1 to continue to move along the direction close to the rope winding piece 23 so as to cause the blocking, and the reliability is improved.
Specifically, the elevating driving mechanism 2 further includes a U-shaped cover 24, the U-shaped cover 24 is installed at the outer side of the first driving member 21 and the rope winding member 23 to shield the first driving member 21 and the rope winding member 23, and the wire rope 22 slidably penetrates the U-shaped cover 24 and is connected to the fire extinguishing ball 1. On one hand, the U-shaped cover 24 can shield and protect the first driving member 21 and the rope winding member 23, and prevent the external interference with the operation of the first driving member 21 and the rope winding member 23; on the other hand, the bottom surface of the U-shaped cover 24 can also restrict the movement of the stopper 4 and the fire extinguishing ball 1 in the direction approaching the rope winding member 23, further improving the reliability.
In this embodiment, the translational driving mechanism 3 includes a second driving member 31, a lead screw and a nut, the lead screw is connected to the output end of the second driving member 31 in a transmission manner, and the second driving member 31 can drive the lead screw to rotate; the nut transmission sleeve is established on the lead screw, and the lead screw can drive the nut and remove, and elevating drive mechanism 2 sets up on the nut. The second driving member 31 can be set as a motor or a pneumatic motor, the second driving member 31 of the embodiment is a motor, the motor is installed on the wall surface, the screw rod is connected to the output end of the motor in a transmission manner, and the nut is in threaded connection with the screw rod. When the motor drives the screw rod to rotate, the lifting driving mechanism 2 and the fire extinguishing ball 1 which are arranged on the nut can move along the axial direction of the screw rod, and the structure is simple. In other embodiments of the present invention, the translation driving mechanism 3 may also be configured as a rack and pinion mechanism, a gear is connected to the output end of the motor, and a rack is engaged with the gear, so as to achieve the same translation driving function.
As a preferred embodiment, the translation drive mechanism 3 further comprises a guide rail 32 and a slider 33, the guide rail 32 being arranged parallel to the lead screw; the slide block 33 is connected to the nut and slidably connected to the guide rail 32, and the elevation drive mechanism 2 is mounted on the slide block 33. The rope winding member 23 of the elevation driving mechanism 2 is rotatably provided on a cover plate fixed to the slider 33. When the nut drives the lifting driving mechanism 2 to move, the sliding block 33 which is connected with the guide rail 32 in a sliding mode can play a role in guiding, and reliability is improved.
Example two:
as shown in fig. 3, the second driving member 31 of the translational driving mechanism 3 of this embodiment extends along the vertical direction and is perpendicular to the screw rod, and the translational driving mechanism 3 further includes a transmission assembly, and the transmission assembly is in transmission connection with the output end of the second driving member 31 and the screw rod to convert the transmission direction. Second driving piece 31 extends along vertical direction, and the lead screw extends along the horizontal direction, and the structure is compacter, has reduced extinguishing device's shared space, and drive assembly converts the vertical direction transmission of second driving piece 31 output into the horizontal direction transmission and transmits for the lead screw.
In this embodiment, the transmission assembly includes a first bevel gear and a second bevel gear, the first bevel gear is connected to the output end of the second driving member 31 in a transmission manner, the second bevel gear is engaged with the first bevel gear, and the second bevel gear is connected to the lead screw in a transmission manner. It can be understood that the first bevel gear with the axial direction in the vertical direction is in transmission connection with the output end of the second driving member 31, the second bevel gear with the axial direction in the horizontal direction is meshed with the first bevel gear, and the second bevel gear is in transmission connection with the screw rod, so that the structure is simple. In other embodiments of the present invention, the transmission assembly can also be configured as a worm wheel and a worm, which can achieve the same transmission function.
As a preferred embodiment, the fire extinguishing apparatus further includes a position sensing component, the position sensing component is installed on the translational driving mechanism 3 and is in communication connection with the lifting driving mechanism 2, and the position sensing component can sense the position of the lifting driving mechanism 2 to control the start and stop of the lifting driving mechanism 2. The position sensor can be configured as a position sensor or an electromagnetic switch, and the position sensor of this embodiment is an electromagnetic switch installed on the first driving member 21. When the translation driving mechanism 3 drives the fire extinguishing ball 1 and the lifting driving mechanism 2 to translate, the second driving piece 31 stops running, and the lifting driving mechanism 2 cannot drive the fire extinguishing ball 1 to lift; after translation actuating mechanism 3 drive fire extinguishing ball 1 to the target location, second driving piece 31 is opened to the electromagnetic induction switch, makes lift actuating mechanism 2 can drive fire extinguishing ball 1 and descends, and then the operation personnel can maintain and change fire extinguishing ball 1. The setting up of position response piece can avoid putting out a fire when the translation, and 2 drive of lifting drive mechanism put out a fire ball 1 goes up and down and make the ball 1 that puts out a fire take place the swing, finally lead to the ball 1 peripheral power equipment that puts out a fire, improved the reliability.
In the description herein, it is to be understood that the terms "upper," "lower," "left," "right," and the like are based on the orientation or positional relationship shown in the drawings for convenience in description and simplicity of operation, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the present invention. Furthermore, the terms "first" and "second" are used merely for descriptive purposes and are not intended to have any special meaning.
In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
In addition, the foregoing is only the preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A fire suppression apparatus, comprising:
the fire extinguishing ball (1) is used for executing fire extinguishing action;
the fire extinguishing ball (1) is connected to an execution end of the lifting driving mechanism (2), and the lifting driving mechanism (2) can drive the fire extinguishing ball (1) to lift;
translation actuating mechanism (3), lift actuating mechanism (2) connect in the execution end of translation actuating mechanism (3), translation actuating mechanism (3) can drive lift actuating mechanism (2) with fire extinguishing ball (1) translation.
2. Fire extinguishing apparatus according to claim 1, characterized in that the lifting drive mechanism (2) comprises:
a first driving member (21) mounted at an execution end of the translation driving mechanism (3);
wire rope (22), one end is connected the output of first driving piece (21), and the other end is connected with fire extinguishing ball (1), first driving piece (21) can the rolling wire rope (22) are in order to draw and rise fire extinguishing ball (1), perhaps release wire rope (22) are in the decline fire extinguishing ball (1).
3. The fire extinguishing apparatus according to claim 2, wherein the lifting drive mechanism (2) further comprises a rope winding member (23), the rope winding member (23) is in transmission connection with an output end of the first drive member (21), one end of the rope winding member is wound around the periphery of the rope winding member (23), and the first drive member (21) can drive the rope winding member (23) to rotate.
4. A fire extinguishing apparatus according to claim 3, characterized in that it further comprises a limiting member (4), said limiting member (4) being located between the rope winding member (23) and the fire extinguishing ball (1), said limiting member (4) being capable of limiting the approach of the fire extinguishing ball (1) to the rope winding member (23).
5. A fire extinguishing apparatus according to claim 3, characterized in that the lifting drive mechanism (2) further comprises a U-shaped cover (24), the U-shaped cover (24) being mounted on the outside of the first driving member (21) and the rope winding member (23) to shield the first driving member (21) and the rope winding member (23), the wire rope (22) sliding through the U-shaped cover (24) and connecting the fire extinguishing ball (1).
6. Fire extinguishing apparatus according to claim 1, characterized in that the translational drive mechanism (3) comprises:
a second drive member (31);
the screw rod is in transmission connection with the output end of the second driving piece (31), and the second driving piece (31) can drive the screw rod to rotate;
the transmission sleeve is arranged on the lead screw, the lead screw can drive the nut to move, and the lifting driving mechanism (2) is arranged on the nut.
7. Fire extinguishing apparatus according to claim 6, characterized in that the translational drive mechanism (3) further comprises:
a guide rail (32) arranged parallel to the lead screw;
and the sliding block (33) is connected with the nut and is in sliding connection with the guide rail (32), and the lifting driving mechanism (2) is arranged on the sliding block (33).
8. Fire extinguishing apparatus according to claim 6, wherein the second driving member (31) extends in a vertical direction and is arranged perpendicular to the lead screw, the translational driving mechanism (3) further comprising a transmission assembly which drivingly connects an output end of the second driving member (31) with the lead screw for switching a transmission direction.
9. Fire extinguishing apparatus according to claim 8, wherein the transmission assembly comprises a first bevel gear drivingly connected to the output of the second drive member (31) and a second bevel gear in mesh with the first bevel gear, the second bevel gear being drivingly connected to the lead screw.
10. The fire extinguishing apparatus according to claim 1, further comprising a position sensing member mounted on the translational drive mechanism (3) and communicatively connected to the elevation drive mechanism (2), the position sensing member being capable of sensing the position of the elevation drive mechanism (2) to control the start and stop of the elevation drive mechanism (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110646667.9A CN113332651A (en) | 2021-06-10 | 2021-06-10 | Fire extinguishing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110646667.9A CN113332651A (en) | 2021-06-10 | 2021-06-10 | Fire extinguishing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113332651A true CN113332651A (en) | 2021-09-03 |
Family
ID=77476174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110646667.9A Withdrawn CN113332651A (en) | 2021-06-10 | 2021-06-10 | Fire extinguishing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113332651A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105056431A (en) * | 2015-08-10 | 2015-11-18 | 国网浙江省电力公司湖州供电公司 | Fire protection system for substation |
| CN207822339U (en) * | 2017-12-14 | 2018-09-07 | 山东科技大学 | A kind of intelligent scalable fire extinguisher of all direction multifunctional |
| CN210250962U (en) * | 2019-07-24 | 2020-04-07 | 河北浦升安全技术工程有限公司 | Fire extinguishing device and fire extinguishing system thereof |
| CN112402850A (en) * | 2020-11-05 | 2021-02-26 | 苏州南师大科技园投资管理有限公司 | Wisdom mill fire control system of patrolling and examining |
| CN112843546A (en) * | 2021-03-03 | 2021-05-28 | 杨国胜 | Live replacement suspension type fire extinguisher transmission system |
-
2021
- 2021-06-10 CN CN202110646667.9A patent/CN113332651A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105056431A (en) * | 2015-08-10 | 2015-11-18 | 国网浙江省电力公司湖州供电公司 | Fire protection system for substation |
| CN207822339U (en) * | 2017-12-14 | 2018-09-07 | 山东科技大学 | A kind of intelligent scalable fire extinguisher of all direction multifunctional |
| CN210250962U (en) * | 2019-07-24 | 2020-04-07 | 河北浦升安全技术工程有限公司 | Fire extinguishing device and fire extinguishing system thereof |
| CN112402850A (en) * | 2020-11-05 | 2021-02-26 | 苏州南师大科技园投资管理有限公司 | Wisdom mill fire control system of patrolling and examining |
| CN112843546A (en) * | 2021-03-03 | 2021-05-28 | 杨国胜 | Live replacement suspension type fire extinguisher transmission system |
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Application publication date: 20210903 |
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| WW01 | Invention patent application withdrawn after publication |