CN110141806A - A kind of escaping device from fire disaster that sinking speed is controllable - Google Patents
A kind of escaping device from fire disaster that sinking speed is controllable Download PDFInfo
- Publication number
- CN110141806A CN110141806A CN201910549539.5A CN201910549539A CN110141806A CN 110141806 A CN110141806 A CN 110141806A CN 201910549539 A CN201910549539 A CN 201910549539A CN 110141806 A CN110141806 A CN 110141806A
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- China
- Prior art keywords
- rope
- fixed pulley
- wheel
- winding wheel
- fire disaster
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- 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.)
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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
- A62B1/06—Devices for lowering persons from buildings or the like by making use of rope-lowering devices
- A62B1/14—Devices for lowering persons from buildings or the like by making use of rope-lowering devices with brakes sliding on the rope
-
- 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
- A62B1/06—Devices for lowering persons from buildings or the like by making use of rope-lowering devices
- A62B1/18—Other single parts for rope lowering-devices, e.g. take-up rollers for ropes, devices for shooting ropes
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- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Emergency Lowering Means (AREA)
Abstract
The controllable escaping device from fire disaster of sinking speed of the invention, including safety belt, rope and escape apparatus, safety belt are mutually fixed with human body and escape apparatus；Escape apparatus is made of wiring mechanism, transmission mechanism, deceleration mechanism and reduction of speed control mechanism；Wiring mechanism is made of lower upper fixed pulley, rope-winding wheel, lower upper bush, rope is successively wrapped in lower fixed pulley, rope-winding wheel, on upper fixed pulley, deceleration mechanism is made of decelerating motor, brake disc and brake block, rope-winding wheel is sequentially connected through transmission mechanism and decelerating motor and brake disc, and rope-winding wheel is braked by control brake block by deceleration mechanism；Decelerating motor is realized by power generation consumption and is braked to rope-winding wheel.Escaping device from fire disaster of the invention, user using escape apparatus along rope when being declined, gravitional force a part is decelerated motor and is converted into power consumption, and another part is consumed by the friction work of brake disc, can be by the speed control of user in safety falling velocity range.
Description
Technical field
The present invention relates to a kind of escaping device from fire disaster, more specifically, more particularly to a kind of potential energy by user
For electric energy and the controllable escaping device from fire disaster of interior consumable sinking speed that rubs.
Background technique
The development of urbanization is so that the population in city, small towns is continuously increased, in order to accommodate more people on limited soil
Mouthful live, more and more cities eliminate the construction of multilayer (6,7 layers or less) building substantially, but select construction high-rise with it is super
Skyscraper.The aggregation of population, the increase of depth of building bring new challenge to fire rescue, when fire occurs, for
For personnel on skyscraper, general aerial ladder can not be reached, that is to say, that can not be to the personnel on high-storey
It sues and labours, this requires high-rise personnel will have the ability of oneself escape when fire occurs.
High level personnel escape when in order to help fire to occur, and someone designs kinds of schemes now, such as in walking
Continuous slide is added in stair, when fire occurs, the personnel on high level can make slide and quickly go downstairs, existing to flee from fire
, but this device first is that add it is relatively difficult, second is that when fire lower layer sprawling come when, chute-the-chute escape
Personnel can face the danger into fire zone.For another example Patent No. CN2013104409605, entitled " skyscraper fire
The patent document of calamity escape apparatus " discloses the device a kind of when fire occurs, the personnel on high level can escape by it, but
This escape device needs when in use by gloves in foam-rubber cushion and holds handle, and this requires the arm strength ratios of escape personnel
It is larger, it, then can not normal use device progress fire escape since its arm strength is limited for women, children.
Summary of the invention
The present invention in order to overcome the shortcomings of the above technical problems, provides a kind of fire disaster escaping that sinking speed is controllable dress
It sets.
The controllable escaping device from fire disaster of sinking speed of the invention, including safety belt, rope and escape apparatus, rope upper end are solid
Be scheduled at escape, lower end is hung down to ground, safety belt is fixed on survivor's human body and mutually fixes with escape apparatus；Escape apparatus is by shell
And it is set to wiring mechanism, transmission mechanism, deceleration mechanism and reduction of speed control mechanism composition in shell；It is characterized by: described
Wiring mechanism is made of lower fixed pulley, upper fixed pulley, rope-winding wheel, lower sleeve and upper bush, and lower sleeve is located under lower fixed pulley
Side, upper bush are located at the top of upper fixed pulley, and rope-winding wheel is located at the lower section of upper fixed pulley, lower fixed pulley, upper fixed pulley and wiring
Wheel is in the same plane；Rope is successively wrapped in lower fixed pulley, rope-winding wheel, on upper fixed pulley after lower sleeve penetrates, and passes through
Upper bush is pierced by；Deceleration mechanism is made of decelerating motor, brake disc and brake block, rope-winding wheel through transmission mechanism and decelerating motor and
Brake disc is sequentially connected, and brake block is set to the periphery of brake disc for braking to brake disc, deceleration control mechanism with
Brake disc is connected, and deceleration mechanism realizes the retarding braking to rope-winding wheel by holding of the control brake block to brake disc；Slow down
Motor realizes the retarding braking to rope-winding wheel by power generation consumption.
The controllable escaping device from fire disaster of sinking speed of the invention, the lower fixed pulley, upper fixed pulley rotate setting respectively
In on the first wheel shaft and the second wheel shaft, rope-winding wheel is fixed on third wheel shaft；The transmission mechanism is by the first gear wheel, first small
Gear, the second gear wheel and the second pinion gear composition, the first gear wheel is fixed on third wheel shaft, the first pinion gear and second largest
Gear is fixed on fourth round axis, and the second pinion gear and brake disc are fixed on the 5th wheel shaft, the first gear wheel and the first small tooth
Wheel is meshed, and the second gear wheel is meshed with the second pinion gear；The output end of decelerating motor is connected with reduction gearbox, reduction gearbox it is defeated
Shaft is coaxial with the 5th wheel shaft and is fixedly connected.
The controllable escaping device from fire disaster of sinking speed of the invention, the rope-winding wheel is located at the lower section of upper fixed pulley, lower fixed
Pulley is located at the left or right side of rope-winding wheel, and winding angle of the rope on lower fixed pulley is half cycle, and rope is on rope-winding wheel
Winding angle is greater than half cycle；Upper fixed pulley, lower fixed pulley outer surface on offer accommodate rope annular groove, rope-winding wheel
Outer surface on offer the wiring chamber of annular, the cross section of wiring chamber is the wide V-shaped in narrow base, outer；The diameter of rope
Greater than wiring bottom of chamber portion width and be less than wiring chamber on edge width.
The controllable escaping device from fire disaster of sinking speed of the invention, the reduction of speed control mechanism is by deceleration handle, pull rod, L
Shape connecting rod composition, is fixed with handle on the shell of escape apparatus, and shell is internally provided with support plate, the middle part of deceleration handle the
Two locating shafts are articulated on handle, and one end of pull rod is articulated with the end of deceleration handle, and one end of the other end and L shape connecting rod is mutually cut with scissors
It connects, the other end of L shape connecting rod is connected with brake block；It is rotatably dispose on the first locating shaft in the middle part of L shape connecting rod, the first positioning
Axis is fixed in support plate.
The controllable escaping device from fire disaster of sinking speed of the invention, along the radial direction side of rope-winding wheel on the inner wall of the wiring chamber
To being provided with several fins.
The controllable escaping device from fire disaster of sinking speed of the invention, the connection type of the safety belt and escape apparatus are as follows: peace
Full band is fixed on handle or is arranged on the shell of escape apparatus the hook with safe band connection.
The beneficial effects of the present invention are: escaping device from fire disaster of the invention, by being arranged by rope-winding wheel and upper and lower fixed pulley
And the wiring mechanism of upper and lower sleeve composition, after rope is wound on rope-winding wheel and upper and lower fixed pulley, if rope-winding wheel can not
Rotation, then rope can not also wind at it and move on path；Brake further through setting through transmission mechanism and rope-winding wheel transmission connection
Hull and decelerating motor, so that the rotation of rope-winding wheel will drive decelerating motor when human body drives escape apparatus to decline on rope
Power generation, decelerating motor power generation consumption realizes the braking to rope-winding wheel again in turn, realizes the drop to user's decrease speed
Speed effect；Meanwhile user can brake brake disc by reduction of speed control mechanism, brake disc brake while can reduce around
The revolving speed of rope sheave, and then realize the control to escape apparatus and user's decrease speed.
Escaping device from fire disaster of the invention changes the form that previous rope is mutually fixed with escape apparatus, but uses rope
The form of wiring mechanism in escape apparatus, while being securely attached together escape apparatus and personnel using safety belt, it uses
When being declined using escape apparatus along rope, gravitional force a part is decelerated motor and is converted into power consumption, another part quilt person
The friction work of brake disc consumes, and realizes the speed control of user in safety falling velocity range, is suitable for fire
When safe escape be used.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of escaping device from fire disaster of the invention；
Fig. 2 is that escaping device from fire disaster of the invention removes the perspective view after shell；
Fig. 3 is that escaping device from fire disaster of the invention removes the main view after shell；
Fig. 4 is that escaping device from fire disaster of the invention removes the rearview after shell；
Fig. 5 is that escaping device from fire disaster of the invention removes the left view after shell；
Fig. 6 is that escaping device from fire disaster of the invention removes the top view after shell；
Fig. 7 is that escaping device from fire disaster of the invention removes the main view after shell and shell inner support plate；
Fig. 8 is that escaping device from fire disaster of the invention removes the left view after shell and shell inner support plate；
Fig. 9 is that escaping device from fire disaster of the invention removes the perspective view after shell and shell inner support plate.
In figure: 1 escape apparatus, 2 shells, 3 handles, 4 deceleration handles, 5 support plates, 6 descend fixed pulleys, fixed pulley on 7,8 wirings
Wheel, 9 lower sleeves, 10 upper bushes, 11 first gear wheels, 12 first pinion gears, 13 second gear wheels, 14 second pinion gears, 15 stop
Hull, 16 brake blocks, 17 fall line channels, 18 first wheel shafts, 19 second wheel shafts, 20 third wheel shafts, 21 fourth round axis, 22 the 5th wheels
Axis, 23 pull rods, 24 L shape connecting rods, 25 first locating shafts, 26 second locating shafts, 27 ropes, 28 decelerating motors, 29 wiring chambers, 30
Fin, 31 reduction gearboxes.
Specific embodiment
The invention will be further described with embodiment with reference to the accompanying drawing.
As shown in Figure 1, giving the structural schematic diagram of escaping device from fire disaster of the invention, this is set forth in Fig. 2 to Fig. 6
Perspective view, main view, rearview, left view and top view after the escaping device from fire disaster removal shell of invention, fire of the invention
Calamity escape device is made of safety belt, rope 27 and escape apparatus 1, and the upper end of rope 27 is for fixing pinnacled escape position
Place, lower end are hung down to ground, and safety belt is fixed on the body of survivor, and is fixedly connected with escape apparatus 1, and survivor is through safety
Band is connected as one with escape apparatus 1.Wiring mechanism, transmission mechanism, deceleration mechanism of the escape apparatus 1 by shell 2 and in shell
It is formed with reduction of speed control mechanism, rope 27 is through in the wiring mechanism of escape apparatus 1, in this way, embracing after survivor puts on safety belt
Escape apparatus 1 decline along rope, and decrease speed is controlled through reduction of speed control mechanism, to guarantee that safety is landed.Escape apparatus 1
Shell 2 on be fixed with handle 3, so that survivor holds, safety belt is securable on handle 3, can also be set on shell 2
Set the hook or hanging ring being fixedly connected with safety belt.
Shown in wiring mechanism be made of lower sleeve 9, lower fixed pulley 6, rope-winding wheel 8, upper fixed pulley 7 and upper bush 10, under
The cavity passed through convenient for rope 27 is offered on sleeve 9 and upper bush 10, lower sleeve 9 and the opening direction of upper bush 10 are flat
Row, rope 27 also realize guiding role after passing through in cavity.Lower fixed pulley 6 is located at the top of lower sleeve 9,7, upper fixed pulley
In the lower section of upper bush 10, lower fixed pulley 6, upper fixed pulley 7 and rope-winding wheel 8 are in the same plane, and rope 27 is worn from lower sleeve 9
After entering, after successively being wound on lower fixed pulley 7, rope-winding wheel 8 and upper fixed pulley 7, then it is pierced by through upper bush 10.
In order to realize, when rope-winding wheel 8 not can be rotated, rope 27 also winds at it immovable in path, it is necessary to rope
The shape of wiring chamber 29 on the winding path of rope 27 and rope-winding wheel 8 is designed, shown in rope-winding wheel 8 be located at upper fixed pulley 7
Lower section, and lower fixed pulley 6 is located at the left or right side of rope-winding wheel 8, and ensures winding angle of the rope 27 on lower fixed pulley 6
For half cycle, winding angle of the rope 27 on rope-winding wheel 8 is greater than half cycle (being about 3 π/4 in figure).And lower fixed pulley 6 and upper determine cunning
The annular groove for accommodating rope 27 is offered on the outer wall of wheel 7, the periphery of rope-winding wheel 8 offers the wiring chamber for accommodating rope 27
29.The cross section of wiring chamber 29 is in narrow base along wide V-shaped, and the diameter of rope 27 is greater than the width of 29 bottom of wiring chamber
Degree, and it is less than the width on edge on wiring chamber 29.
In this way, after rope 27 is wound on lower fixed pulley 6, rope-winding wheel 8 and upper fixed pulley 7, be braked when rope-winding wheel 8 and
When not can be rotated, rope 27 can not also move in wiring chamber 29, and only when rope-winding wheel 8 can rotate, rope 27 just can be with
It rotates therewith, i.e., the movement speed of rope 27 is consistent with the velocity of rotation of rope-winding wheel 27, and also exactly this rope 27 can only
The characteristic for following rope-winding wheel 8 to move together just ensure that deceleration mechanism can slow down to it control.Rope 27 in order to further increase
With the frictional force between rope-winding wheel 8, the radial direction on the inner wall of shown wiring chamber 29 along rope-winding wheel 8 is provided with a plurality of fin
30。
As shown in Figure 7, Figure 8 and Figure 9, escaping device from fire disaster removal shell and shell inner support of the invention is set forth
Main view, left view and perspective view after plate, shown in transmission mechanism by the first gear wheel 11, the first pinion gear 12, second largest
Gear 13 and the second pinion gear 14 composition.Support plate 5 is provided in shell 2, lower fixed pulley 6, upper fixed pulley 7 rotate setting respectively
In on the first wheel shaft 18 and the second wheel shaft 19, rope-winding wheel 8 is fixed on third wheel shaft 20, and the first wheel shaft 18, the second wheel shaft 19 are
It is fixed in support plate 5, third wheel shaft 20 is rotatably dispose in support plate 5.
First gear wheel 12 is coaxially disposed with rope-winding wheel 8, also is secured on third wheel shaft 20.First pinion gear 12 and second
Gear wheel 13 is coaxially disposed, and is both secured on fourth round axis 21, the second pinion gear 14 is fixed on the 5th wheel shaft 22, the first canine tooth
Wheel 11 is engaged with the first pinion gear 12, and the second gear wheel 13 is engaged with the second pinion gear 14, in this way, when the mistake of the rotation of rope-winding wheel 8
Cheng Zhong can drive the second pinion gear 14 and the 5th wheel shaft 22 to rotate together, and carry out 2 grades of speedups.
Shown in deceleration mechanism be made of decelerating motor 28, brake disc 15 and brake block 16, brake disc 15 and the second small tooth
14 coaxial arrangement of wheel, that is, be fixed on the 5th wheel shaft 22, and brake block 16 is set to the periphery of brake disc 15, by brake embraced
Tight mode brakes it.Brake block 16 is connected with reduction of speed control mechanism, and reduction of speed control mechanism can brake to 16 pairs of brake block
The holding strength of disk 15 is controlled, to control the revolving speed of brake disc 15 in required range.The revolving speed of brake disc 15
After controlling, the revolving speed for being also equivalent to rope-winding wheel 8 is under control, that is, realizes the movement velocity in winding path of rope 27
Control, finally realize user and safety belt along the control of 27 decrease speed of rope.
The output end of decelerating motor 28 is connected with reduction gearbox 31, and the output shaft of reduction gearbox 31 is coaxially set with the 5th wheel shaft 22
It sets, that is, is fixed on the 5th wheel shaft 22.In the case where rope-winding wheel 8 is as driving wheel, reduction gearbox 31 is for decelerating motor 28
It says and is equivalent to speedup, in this way, the rope-winding wheel 8 of rotation drives decelerating motor 28 to be rotated after 3 grades of speedups, high-speed rotation
Decelerating motor 28 is conducive to power generation operation, and good regenerative braking can be achieved after the external electricity consumption device of decelerating motor 28, to realize
To the braking reduction of speed of rope-winding wheel 8.
Shown in reduction of speed control mechanism be made of deceleration handle 4, pull rod 23, L shape connecting rod 24, the middle part of deceleration handle 4 warp
Second locating shaft 26 is articulated with the inside of handle 3, when user holds handle 3 again, it is convenient to grasp to deceleration handle 4
Control.One end of pull rod 23 and the end of deceleration handle 4 are hinged, and one end of the other end and L shape connecting rod 24 is hinged, L shape connecting rod
24 other end is fixedly connected with brake block 16.The middle part of L shape connecting rod 24 is rotatably dispose on the first locating shaft 25, the first positioning
Axis 25 is fixed in support plate 5, in this way, when holding deceleration handle 4, it can be to brake block 16 to the holding strength of brake disc 15
It is controlled, and then realizes and the velocity of rotation of brake disc 15 and rope-winding wheel 8 is controlled, is i.e. control user and escape apparatus 1
Along the decrease speed of rope 27.
The application method of escaping device from fire disaster of the invention are as follows: since rope 27 is to wind to run through in escape apparatus 1 in advance
, therefore when escape, it will be firmly fixed on escape position aloft from 27 one end of rope that upper bush 10 is pierced by first, so
The rope 27 being pierced by from lower sleeve 9 is got rid of to ground afterwards；Then, safety belt is put on, and safety belt and escape apparatus 1 are fixed and connected
It connects；Finally, having escape apparatus 1 in arms and holding spanner 3 can slide along rope 27, during declining along rope 27, pass through hand
Decrease speed can be controlled by holding deceleration handle 4, to realize the purpose landed safely.
Claims (6)
1. a kind of escaping device from fire disaster that sinking speed is controllable, including safety belt, rope (27) and escape apparatus (1), rope upper end
Be fixed at escape, lower end is hung down to ground, safety belt is fixed on survivor's human body and mutually fixes with escape apparatus (1)；Escape apparatus
It is made of shell (2) and the wiring mechanism being set in shell, transmission mechanism, deceleration mechanism and reduction of speed control mechanism；Its feature
Be: the wiring mechanism is by lower fixed pulley (6), upper fixed pulley (7), rope-winding wheel (8), lower sleeve (9) and upper bush (10) group
At lower sleeve is located at the lower section of lower fixed pulley, and upper bush is located at the top of upper fixed pulley, and rope-winding wheel is located under upper fixed pulley
Side, lower fixed pulley, upper fixed pulley and rope-winding wheel are in the same plane；For rope after lower sleeve penetrates, it is lower fixed to be successively wrapped in
Pulley, rope-winding wheel on upper fixed pulley, and are pierced by through upper bush；Deceleration mechanism is by decelerating motor (28), brake disc (15) and brake
Piece (16) composition, rope-winding wheel (8) are sequentially connected through transmission mechanism and decelerating motor and brake disc, and brake block is set to brake disc
Periphery for being braked to brake disc, deceleration control mechanism is connected with brake disc, and deceleration mechanism is by controlling brake block
The retarding braking to rope-winding wheel is realized to the holding of brake disc；Decelerating motor realizes the deceleration system to rope-winding wheel by power generation consumption
It is dynamic.
2. the controllable escaping device from fire disaster of sinking speed according to claim 1, it is characterised in that: the lower fixed pulley
(6), upper fixed pulley (7) is rotatably dispose in respectively on the first wheel shaft (18) and the second wheel shaft (19), and rope-winding wheel (8) is fixed on third
On wheel shaft (20)；The transmission mechanism is small by the first gear wheel (11), the first pinion gear (12), the second gear wheel (13) and second
Gear (14) composition, the first gear wheel are fixed on third wheel shaft, and the first pinion gear and the second gear wheel are fixed on fourth round axis
(21) on, the second pinion gear and brake disc (15) are fixed on the 5th wheel shaft (22), and the first gear wheel is mutually nibbled with the first pinion gear
It closes, the second gear wheel is meshed with the second pinion gear；The output end of decelerating motor (28) is connected with reduction gearbox (31), reduction gearbox
Output shaft is coaxial with the 5th wheel shaft and is fixedly connected.
3. the controllable escaping device from fire disaster of sinking speed according to claim 1 or 2, it is characterised in that: the rope-winding wheel
(8) it is located at the lower section of upper fixed pulley (7), lower fixed pulley (6) is located at the left or right side of rope-winding wheel, and rope (27) is in lower fixed pulley
On winding angle be half cycle, winding angle of the rope on rope-winding wheel be greater than half cycle；The outer surface of upper fixed pulley, lower fixed pulley
On offer the annular groove for accommodating rope, the wiring chamber (29) of annular is offered on the outer surface of rope-winding wheel, wiring chamber
The V-shaped that cross section is narrow base, outer is wide；The diameter of rope is greater than the width in wiring bottom of chamber portion and is less than edge on wiring chamber
Width.
4. the controllable escaping device from fire disaster of sinking speed according to claim 1 or 2, it is characterised in that: the reduction of speed control
Mechanism processed is made of deceleration handle (4), pull rod (23), L shape connecting rod (24), is fixed with handle (3) on the shell (2) of escape apparatus,
Shell (2) is internally provided with support plate (5), and the second locating shaft of middle part (26) of deceleration handle is articulated on handle, pull rod
One end be articulated with the end of deceleration handle, one end of the other end and L shape connecting rod is hinged, the other end of L shape connecting rod and brake
Piece (16) is connected；It is rotatably dispose in the middle part of L shape connecting rod on the first locating shaft (25), the first locating shaft is fixed on support plate
On.
5. the controllable escaping device from fire disaster of sinking speed according to claim 3, it is characterised in that: the wiring chamber (29)
Inner wall on the radial direction of rope-winding wheel (8) is provided with several fins (30).
6. the controllable escaping device from fire disaster of sinking speed according to claim 1 or 2, it is characterised in that: the safety belt
With the connection type of escape apparatus (1) are as follows: safety belt is fixed on handle (3) or setting and safety belt on the shell (2) of escape apparatus
The hook of connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910549539.5A CN110141806A (en) | 2019-06-24 | 2019-06-24 | A kind of escaping device from fire disaster that sinking speed is controllable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910549539.5A CN110141806A (en) | 2019-06-24 | 2019-06-24 | A kind of escaping device from fire disaster that sinking speed is controllable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110141806A true CN110141806A (en) | 2019-08-20 |
Family
ID=67596324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910549539.5A Pending CN110141806A (en) | 2019-06-24 | 2019-06-24 | A kind of escaping device from fire disaster that sinking speed is controllable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110141806A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111420310A (en) * | 2020-03-18 | 2020-07-17 | 浙安集团有限公司 | Hydraulic damping descent control device for high-rise escape |
-
2019
- 2019-06-24 CN CN201910549539.5A patent/CN110141806A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111420310A (en) * | 2020-03-18 | 2020-07-17 | 浙安集团有限公司 | Hydraulic damping descent control device for high-rise escape |
| CN111420310B (en) * | 2020-03-18 | 2021-11-05 | 浙安集团有限公司 | Hydraulic damping descent control device for high-rise escape |
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