CN109464758A - A kind of security against fire prompt drop bar - Google Patents
A kind of security against fire prompt drop bar Download PDFInfo
- Publication number
- CN109464758A CN109464758A CN201811355860.1A CN201811355860A CN109464758A CN 109464758 A CN109464758 A CN 109464758A CN 201811355860 A CN201811355860 A CN 201811355860A CN 109464758 A CN109464758 A CN 109464758A
- Authority
- CN
- China
- Prior art keywords
- air cavity
- drop bar
- prompt drop
- compression air
- security against
- 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.)
- Pending
Links
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B1/00—Devices for lowering persons from buildings or the like
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B35/00—Safety belts or body harnesses; Similar equipment for limiting displacement of the human body, especially in case of sudden changes of motion
- A62B35/04—Safety belts or body harnesses; Similar equipment for limiting displacement of the human body, especially in case of sudden changes of motion incorporating energy absorbing means
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Emergency Lowering Means (AREA)
Abstract
The present invention relates to fire fighting equipment technical fields, disclose a kind of security against fire prompt drop bar, including inner sleeve and outer tube, the hollow structure inside of the inner sleeve is as external compression air cavity, the hollow structure inside of the outer tube is as interior compression air cavity, the inner sleeve and outer tube head and the tail are socketed, the external compression air cavity is connected with the interior compression air cavity, the both ends of the external compression air cavity inner wall are combined with a pair of of external seal piston, the both ends of the interior compression air cavity inner wall are combined with sealing piston in one pair, it is joined end to end between the external seal piston by reset spring, it joins end to end between the interior sealing piston also by reset spring, the both ends of the prompt drop bar by be detachably connected upper-top part and under step on component and be sealed, the present invention, which has to apply to, to be higher by the fire-extinguishing and lifesaving that jump is fallen, with reliable slow Punching acts on, is safe and convenient to use, can be the beneficial effect that fire fighter and lifesaving personnel get the times of more seeking survival.
Description
Technical field
The present invention relates to fire fighting equipment technical field more particularly to a kind of security against fire prompt drop bars.
Background technique
When fire occurs, burner is jumped out in somebody's selection, but since the floor having is too high, is produced serious casualties, high
Rope may also be blown when warm, and safe prompt drop bar may act as hand-held ripping bar tool when crisis, and can be used as fire-fighting work
Industry personnel climb auxiliary tool, it is most important that fire fighter can be helped to jump off and preserve from from eminence.Existing fire-fighting
Bar can not accomplish effective buffer function when fire fighter jumps off from eminence, cannot be fire-fighting people using inadequate safe ready
Member and lifesaving personnel, which get, more to seek survival the time, such as: Chinese patent application notification number CN108394773A, data of publication of application
On August 14th, 2018, invention and created name be a kind of urgent fire-fighting bar of elevator, including rubber pad, mounting blocks, counterscrew,
Positive sleeve, extending frame, expansion knife rest, handle, fixed block, installation convex block, handle, rubber pad splicing are mounted on mounting blocks, pacify
Dress block screw thread is equipped with counterscrew, and counterscrew both ends screw thread is socketed in positive sleeve diameter, counterscrew and positive sleeve
It is fastened and is installed by fixed block, extending frame is mounted on installation convex block by screw socket, and handle screw flight is mounted on expansion
On frame, handle screw tip is equipped with expansion knife rest, and a kind of urgent fire-fighting bar of elevator, it is tight that present apparatus design is suitable for elevator door
Pressure under anxious state expands, and rotates positive sleeve, and counterscrew, which laterally rotates, props up lift door frame, during fixed block is mounted on
At the installation convex block of heart position, trim locations make to expand knife rest alignment elevator crack between a door and its frame, rotate handle, and expansion knife rest is triangle
Design struts elevator door, then unplugs elevator door manually, realizes urgent fire-fighting operation.The device is disadvantageous in that, Wu Fayun
It uses in the fire-extinguishing and lifesaving for being higher by and jumping and falling, effective buffer function can not be played, cannot be fire-fighting people using inadequate safe ready
Member and lifesaving personnel, which get, more to seek survival the time.
Summary of the invention
The present invention in order to solve fire-fighting bar in the prior art can not apply to be higher by jump in the fire-extinguishing and lifesaving that falls, Wu Faqi
To effective buffer function, using inadequate safe ready, cannot get and more seek survival the time for fire fighter and lifesaving personnel
Deficiency, provide in a kind of fire-extinguishing and lifesaving that can be applied to and be higher by and jump and fall, there is reliable buffer function, using secure side
Just, the security against fire prompt drop bar for times of more seeking survival can be got for fire fighter and lifesaving personnel.
To achieve the above object, the present invention adopts the following technical scheme:
A kind of security against fire prompt drop bar, including inner sleeve and outer tube, the hollow structure inside of the inner sleeve is as external compression
The hollow structure inside of air cavity, the outer tube is socketed as interior compression air cavity, the inner sleeve and outer tube head and the tail, institute
It states external compression air cavity to be connected with the interior compression air cavity, it is living that the both ends of the external compression air cavity inner wall are combined with a pair of of external seal
Plug, the both ends of the interior compression air cavity inner wall are combined with sealing piston in one pair, pass through reset bullet between the external seal piston
Spring joins end to end, and joins end to end between the interior sealing piston also by reset spring, and the both ends of the prompt drop bar pass through removable
It unloads connection upper-top part and steps on component under to be sealed.The present invention is joined end to end structure by several inner sleeves and several outer tubes
At the inside of outer tube and inner sleeve is designed with compression air cavity, and inner sleeve can glide on the external compression air cavity in outer tube
It is dynamic, sealing mechanism is set between the both ends and outer tube of inner sleeve, and has been detachably connected upper-top part at the both ends of prompt drop bar
Component is stepped on under, so that the inside of entire prompt drop bar is formed a confined space, entire prompt drop bar is vertical, upper-top part when use
Abdomen or the front of user are withstood, both feet slam and step on component holding balance under lower end, when lifesaving personnel fall from eminence jump, by
In the effect of inertia, the upper end that prompt drop bar is acted on when body impacts down is pressed down, and the inner space of prompt drop bar becomes smaller, gas quilt
Compression prevents body from continuing to play first layer buffer function toward undershoot, compresses all be provided in air cavity and interior compression air cavity outside
Sealing piston and reset spring, when falling impact power is excessive, gas will be by Fast Compression, because there is the sealing of sealing piston
Effect, the gas in entire prompt drop bar is separated, and has been formed it into adjacent one by one stingy section, has been avoided in air cavity
Gas by Fast Compression, and weaken buffer function, reset spring is in order to back push sealing piston, to delay next time
Punching is prepared, and sealing piston and being used cooperatively for reset spring play second layer buffer function, and double buffering uses prompt drop bar
Safe ready, and prompt drop bar of the invention is that inner sleeve and the end to end composition of outer tube are arranged more according to the height of landing
Grade buffer cell, increases buffer cell, convenient installation and removal according to the actual situation, and compact can deposit in balcony, door back
The place within reach such as face can get more preciousnesses using also extremely facilitating for fire fighter and lifesaving personnel in seeking survival
Time.
Preferably, the outer tube is equipped with the constant pressure of connection ambient atmosphere and external compression air cavity close to one end of inner sleeve
Valve.When the air pressure in external compression air cavity reaches rating number, constant pressure valve opens the gas in release external compression air cavity, prevents outer
Casing rebound locking, increases buffer distance, improves safety.
Preferably, the inner sleeve is equipped with the constant pressure of logical ambient atmosphere and interior compression air cavity far from one end of outer tube
Valve.When the intracavitary air pressure of inside and outside compressed gas reaches rating number, constant pressure valve opens the gas in release in compression air cavity, prevents
Inner sleeve rebound locking, increases buffer distance, improves safety.
Preferably, the lateral wall at the inner sleeve both ends is socketed with sealing scraping ring.Sealing scraping ring prevents inner sleeve and outer
Casing is connected position gas leakage, reduces buffer function.
Preferably, the upper-top part include connect sleeve and be fixedly connected on connection sleeve upper surface arc it is soft
Pad, one end plug connection of the connection sleeve and prompt drop bar.Connection sleeve is used for and the top of prompt drop bar socket-connects, the company of playing
It connects and sealing function, arc cushion is used to abut against with the abdomen of human body or thoracic cavity, prevent prompt drop bar from stabbing human body.
Preferably, stepping on component under described includes base socket sleeve and the guiding suction for being detachably connected on base socket sleeve lower end surface
Disk, one end plug connection of the base socket sleeve and prompt drop bar.Base socket sleeve is used for and the bottom end of prompt drop bar socket-connects, the company of playing
It connects and sealing function, the guiding sucker below base socket sleeve, the effect of existing buffering, and can guarantee that prompt drop bar drops vertically as far as possible
It falls, rather than tiltedly throwing makes one injured.
Preferably, the side wall for stepping on component under described is equipped with a pair of of groove, component is stepped under described and passes through torsional spring for a pair of of foot
Articulated connection is pedaled among groove.Pedal can help user to slam and fix the lower end of prompt drop bar, be acted on by torsional spring
Pedal can be hidden among groove, the volume of component is stepped under diminution, stored more convenient.
Preferably, the guiding sucker includes the elastic metallic skeleton in sucker and sucker.Metallic framework increases
It is oriented to the toughness of sucker, is easily deformed it less, moreover it is possible to guiding role is improved, guarantees prompt drop bar vertical drop, rather than
Tiltedly throwing makes one injured.
Preferably, the bottom of the base socket sleeve sets slotting chamber, one end plug connection of the guiding sucker in slotting chamber it
In.Movable chamber of the chamber as guiding sucker is inserted, allows to be oriented to sucker and moves up and down.
Preferably, the guiding sucker, which is inserted between one end and the inner bottom surface of slotting chamber of chamber, has abutted sucker spring.
Sucker spring works as a buffer guiding sucker, increases buffer distance, improves safety.
Preferably, the side of the prompt drop bar is equipped with safety handle.By holding safety handle, guarantee prompt drop as far as possible
Bar vertical drop, rather than tiltedly throwing makes one injured.
Therefore, a kind of security against fire prompt drop bar of the invention has the advantage that the fire-fighting for applying to and being higher by and jumping and fall
In lifesaving, there is reliable buffer function, is safe and convenient to use, can be got when more seeking survival for fire fighter and lifesaving personnel
Between.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is perspective view of the invention.
Fig. 3 is the partial enlarged view at the position K in Fig. 1.
Fig. 4 is the partial enlarged view at the position P in Fig. 1.
Wherein: outer tube 1, inner sleeve 2, external compression air cavity 3, interior compression air cavity 4, external seal piston 5, interior sealing piston 6,
Reset spring 7, constant pressure valve 8, sealing scraping ring 9, connection sleeve 10, arc cushion 11, base socket sleeve 12, guiding sucker 13, pedal
14, sucker 15, elastic metallic skeleton 16, slotting chamber 17, sucker spring 18, safety handle 19.
Specific embodiment
Below with reference to the embodiments and with reference to the accompanying drawing the technical solutions of the present invention will be further described.
As shown in Figure 1,2,3, 4, a kind of security against fire prompt drop bar, in which:
A kind of security against fire prompt drop bar includes an inner sleeve 2 of upper and lower two outer tubes 1 and intermediate position, inner sleeve
Hollow structure inside is as external compression air cavity 3, and the hollow structure inside of outer tube is as interior compression air cavity 4, two outer tubes point
It is not socketed in the both ends of inner sleeve, external compression air cavity is connected with interior compression air cavity, and the both ends of external compression air cavity inner wall are combined with
The both ends of a pair of of external seal piston 5, interior compression air cavity inner wall are combined with sealing piston 6 in one pair, pass through between external seal piston
Reset spring 7 joins end to end, and joins end to end between interior sealing piston also by reset spring, and the both ends of prompt drop bar pass through detachable
Connection upper-top part steps on component under to be sealed.The present embodiment is joined end to end structure by an inner sleeve and two outer tubes
At the inside of outer tube and inner sleeve is designed with compression air cavity, and inner sleeve can glide on the external compression air cavity in outer tube
It is dynamic, sealing mechanism is set between the both ends and outer tube of inner sleeve, and has been detachably connected upper-top part at the both ends of prompt drop bar
Component is stepped on under, so that the inside of entire prompt drop bar is formed a confined space, entire prompt drop bar is vertical, upper-top part when use
Abdomen or the front of user are withstood, both feet slam and step on component holding balance under lower end, when lifesaving personnel fall from eminence jump, by
In the effect of inertia, the upper end that prompt drop bar is acted on when body impacts down is pressed down, and the inner space of prompt drop bar becomes smaller, gas quilt
Compression prevents body from continuing to play first layer buffer function toward undershoot, compresses all be provided in air cavity and interior compression air cavity outside
Sealing piston and reset spring, when falling impact power is excessive, gas will be by Fast Compression, because there is the sealing of sealing piston
Effect, the gas in entire prompt drop bar is separated, and has been formed it into adjacent one by one stingy section, has been avoided in air cavity
Gas by Fast Compression, and weaken buffer function, reset spring is in order to back push sealing piston, to delay next time
Punching is prepared, and sealing piston and being used cooperatively for reset spring play second layer buffer function, and double buffering uses prompt drop bar
Safe ready, and prompt drop bar of the invention is that inner sleeve and the end to end composition of outer tube are arranged more according to the height of landing
Grade buffer cell, increases buffer cell, convenient installation and removal according to the actual situation, and compact can deposit in balcony, door back
The place within reach such as face can get more preciousnesses using also extremely facilitating for fire fighter and lifesaving personnel in seeking survival
Time.Outer tube is equipped with the constant pressure valve 8 of connection ambient atmosphere and external compression air cavity close to one end of inner sleeve.When external compression gas
When intracavitary air pressure reaches rating number, constant pressure valve opens the gas in release external compression air cavity, prevents outer tube rebound locking,
Buffer distance is increased, safety is improved.Inner sleeve is equipped with logical ambient atmosphere and interior compression air cavity far from one end of outer tube
Constant pressure valve.When the intracavitary air pressure of inside and outside compressed gas reaches rating number, constant pressure valve opens the gas in release in compression air cavity
Body prevents inner sleeve rebound locking, increases buffer distance, improve safety.The lateral wall at inner sleeve both ends is socketed with close
Seal scraping ring 9.Sealing scraping ring prevents inner sleeve to be connected with outer tube position gas leakage, reduces buffer function.Upper-top part includes connecting
One end grafting of female connector cylinder 10 and the arc cushion 11 for being fixedly connected on connection sleeve upper surface, connection sleeve and prompt drop bar connects
It connects.Connection sleeve is used for and the top of prompt drop bar socket-connects, and plays the role of connection and sealing, arc cushion is used for and the abdomen of human body
Portion or thoracic cavity abut against, and prevent prompt drop bar from stabbing human body.Under to step on component include base socket sleeve 12 and being detachably connected on base sleeve
The guiding sucker 13 of cylinder lower end surface, one end plug connection of base socket sleeve and prompt drop bar.Base socket sleeve is used for and the bottom of prompt drop bar
End socket-connects, and plays the role of connection and sealing, the guiding sucker below base socket sleeve, the effect of existing buffering, and can be as far as possible
Guarantee prompt drop bar vertical drop, rather than tiltedly throwing makes one injured.Under step on the side wall of component and be equipped with a pair of of groove, under step on component
A pair of of pedal 14 is articulated and connected among groove by torsional spring.Pedal can help user to slam and fix prompt drop bar
Pedal can be hidden among groove by torsional spring effect, the volume of component is stepped under diminution, stored more convenient by lower end.Guiding
Sucker includes the elastic metallic skeleton 16 in sucker 15 and sucker.Metallic framework increases the toughness of guiding sucker, makes it not
It is so easily deformed, moreover it is possible to improve guiding role, guarantee prompt drop bar vertical drop, rather than tiltedly throwing makes one injured.Pedestal
The bottom of sleeve, which is equipped with, inserts chamber 17, and one end plug connection of the guiding sucker is among slotting chamber.Chamber is inserted as guiding sucker
Movable chamber allows to be oriented to sucker and moves up and down.Guiding sucker is inserted between one end and the inner bottom surface of slotting chamber of chamber and has abutted suction
Disk spring 18.Sucker spring works as a buffer guiding sucker, increases buffer distance, improves safety.The side of prompt drop bar
Face is equipped with safety handle 19.By holding safety handle, guarantee prompt drop bar vertical drop as far as possible, rather than tiltedly throwing makes one
It is injured.
A kind of security against fire prompt drop bar of the invention is reliable with that can apply in the fire-extinguishing and lifesaving for being higher by and jumping and falling, have
Buffer function, beneficial effect safe and convenient to use, that the times of more seeking survival can be got for fire fighter and lifesaving personnel.
Claims (10)
1. a kind of security against fire prompt drop bar, characterized in that including inner sleeve and outer tube, the hollow structure inside of the inner sleeve
As external compression air cavity, the hollow structure inside of the outer tube is as interior compression air cavity, the inner sleeve and the outer tube
Head and the tail are socketed, and the external compression air cavity is connected with the interior compression air cavity, and the both ends of the external compression air cavity inner wall are combined with
The both ends of a pair of of external seal piston, the interior compression air cavity inner wall are combined with sealing piston in one pair, the external seal piston it
Between joined end to end by reset spring, join end to end between the interior sealing piston also by reset spring, the prompt drop bar
Both ends by be detachably connected upper-top part and under step on component and be sealed.
2. a kind of security against fire prompt drop bar according to claim 1, characterized in that the outer tube is close to the inner sleeve
One end be equipped with connection ambient atmosphere and external compression air cavity constant pressure valve.
3. a kind of security against fire prompt drop bar according to claim 1 or 2, characterized in that the inner sleeve is far from outer tube
One end be equipped with the constant pressure valve of logical ambient atmosphere and interior compression air cavity.
4. a kind of security against fire prompt drop bar according to claim 1 or 2 or 3, characterized in that outside the inner sleeve both ends
Side wall is socketed with sealing scraping ring.
5. a kind of security against fire prompt drop bar according to claim 1, characterized in that the upper-top part includes connection sleeve
With the arc cushion for being fixedly connected on connection sleeve upper surface.
6. a kind of security against fire prompt drop bar according to claim 1, characterized in that stepping on component under described includes base socket sleeve
With the guiding sucker for being detachably connected on base socket sleeve lower end surface.
7. a kind of security against fire prompt drop bar according to claim 1 or 6, characterized in that the side wall for stepping on component under described is set
There is a pair of of groove, component is stepped under described, a pair of of pedal is articulated and connected among groove by torsional spring.
8. according to claim 6 or a kind of security against fire prompt drop bar, characterized in that the guiding sucker includes sucker
With the elastic metallic skeleton in sucker.
9. according to claim 6 or a kind of security against fire prompt drop bar, characterized in that the bottom of the base socket sleeve is equipped with
Chamber is inserted, one end plug connection of the guiding sucker is among slotting chamber.
10. according to claim 6 or 8 or a kind of security against fire prompt drop bar, characterized in that the guiding sucker insertion is inserted
Sucker spring has been abutted between one end of chamber and the inner bottom surface of slotting chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811355860.1A CN109464758A (en) | 2018-11-14 | 2018-11-14 | A kind of security against fire prompt drop bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811355860.1A CN109464758A (en) | 2018-11-14 | 2018-11-14 | A kind of security against fire prompt drop bar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109464758A true CN109464758A (en) | 2019-03-15 |
Family
ID=65672857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811355860.1A Pending CN109464758A (en) | 2018-11-14 | 2018-11-14 | A kind of security against fire prompt drop bar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109464758A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115531761A (en) * | 2022-09-30 | 2022-12-30 | 重庆瑜煌电力设备制造有限公司 | Anti-falling device for electric power iron tower |
| CN116370857A (en) * | 2023-03-24 | 2023-07-04 | 贵州电网有限责任公司 | Safety belt suspension device for electric power overhaul |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202506005U (en) * | 2012-03-12 | 2012-10-31 | 刘灿莹 | Parachute-type descent self-rescue device |
| CN202609089U (en) * | 2012-03-13 | 2012-12-19 | 叶秋诗 | Multifunctional rescue capsule |
| CN203507355U (en) * | 2013-10-21 | 2014-04-02 | 王本 | Escape parachute used in narrow well |
| CN205108791U (en) * | 2015-10-16 | 2016-03-30 | 中国石油大学(华东) | Buffering formula high safe lifesaving umbrella of standing |
-
2018
- 2018-11-14 CN CN201811355860.1A patent/CN109464758A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202506005U (en) * | 2012-03-12 | 2012-10-31 | 刘灿莹 | Parachute-type descent self-rescue device |
| CN202609089U (en) * | 2012-03-13 | 2012-12-19 | 叶秋诗 | Multifunctional rescue capsule |
| CN203507355U (en) * | 2013-10-21 | 2014-04-02 | 王本 | Escape parachute used in narrow well |
| CN205108791U (en) * | 2015-10-16 | 2016-03-30 | 中国石油大学(华东) | Buffering formula high safe lifesaving umbrella of standing |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115531761A (en) * | 2022-09-30 | 2022-12-30 | 重庆瑜煌电力设备制造有限公司 | Anti-falling device for electric power iron tower |
| CN115531761B (en) * | 2022-09-30 | 2024-01-19 | 重庆瑜煌电力设备制造有限公司 | Anti-falling device for electric power iron tower |
| CN116370857A (en) * | 2023-03-24 | 2023-07-04 | 贵州电网有限责任公司 | Safety belt suspension device for electric power overhaul |
| CN116370857B (en) * | 2023-03-24 | 2024-01-26 | 贵州电网有限责任公司 | Safety belt suspension device for electric power overhaul |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101716405B (en) | Fire-fighting cannon of high-rise building | |
| CN109464758A (en) | A kind of security against fire prompt drop bar | |
| CN101940820B (en) | Lifesaving device by breaking window | |
| CN102218201A (en) | Fire engine capable of implementing highrise rescue | |
| CN107583211A (en) | A kind of high-rise rescue device | |
| CN104815400B (en) | A kind of Backpack type life line | |
| CN110538391A (en) | high-altitude fire emergency escape system backpack | |
| CN201800011U (en) | Window breaker used by pressing | |
| CN202506005U (en) | Parachute-type descent self-rescue device | |
| CN109914777A (en) | Power construction equipment based on friction aeration and the safety protection function of pressure buffer | |
| CN111589008A (en) | Safety protection type building straight-jump escape device | |
| CN1268382A (en) | Lifesaving air bag | |
| CN212994770U (en) | High-reliability safety helmet | |
| CN211798328U (en) | Novel supporting set | |
| CN208856733U (en) | High-rise building fire ladder for escaping | |
| KR101105333B1 (en) | parachute survival equipment | |
| CN208193406U (en) | The withdrawable gas cylinder of fire fighting truck is supplied for bottle rack structure | |
| CN2364917Y (en) | Life-saving air bag | |
| CN209494474U (en) | A kind of building safety rescue window | |
| CN110510125A (en) | Preparatory expansion high-rise life saving pack | |
| CN218965320U (en) | Fire-fighting hammer | |
| CN211724425U (en) | Fire-fighting lifesaving air cushion | |
| CN218512226U (en) | Fire safety helmet testing arrangement | |
| CN113877135B (en) | Treadmill safety body-building auxiliary device | |
| CN217311721U (en) | Remote control flight type dry powder fire extinguishing lifesaving device |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190315 |
|
| RJ01 | Rejection of invention patent application after publication |