CN107929962A - A kind of rescue speed difference device of the replaceable energy absorption of convenient quickly - Google Patents
A kind of rescue speed difference device of the replaceable energy absorption of convenient quickly Download PDFInfo
- Publication number
- CN107929962A CN107929962A CN201711444218.6A CN201711444218A CN107929962A CN 107929962 A CN107929962 A CN 107929962A CN 201711444218 A CN201711444218 A CN 201711444218A CN 107929962 A CN107929962 A CN 107929962A
- Authority
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- China
- Prior art keywords
- housing
- spring
- pulley
- energy absorption
- speed difference
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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.)
- Pending
Links
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 30
- 230000007246 mechanism Effects 0.000 claims abstract description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 19
- 239000010959 steel Substances 0.000 claims description 19
- 238000007789 sealing Methods 0.000 claims description 4
- 230000013011 mating Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000000338 in vitro Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 9
- 206010057071 Rectal tenesmus Diseases 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 208000012271 tenesmus Diseases 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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
-
- 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
- A62B1/08—Devices for lowering persons from buildings or the like by making use of rope-lowering devices with brake mechanisms for the winches or pulleys
- A62B1/10—Devices for lowering persons from buildings or the like by making use of rope-lowering devices with brake mechanisms for the winches or pulleys mechanically operated
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Emergency Lowering Means (AREA)
Abstract
The present invention relates to a kind of rescue speed difference device of the replaceable energy absorption of convenient quickly, including the first housing and the second housing, first housing is matched with the second housing and phase split is set, receiving area is equipped with first housing and second shell body of phase split, swing mechanism is provided with the receiving area, splicing has the 3rd housing on second housing, and energy absorbing device and pawl are provided with it, both are meshed setting, and the swing mechanism is equipped with energy absorbing device.The effect of present invention can play slow drop by pulley, spring slotted disk, volute spring, wheel shaft and energy absorbing device, makes operating personnel that the personal safety of operating personnel can be effectively ensured in working at height.
Description
Technical field
The present invention relates to one kind to rescue speed difference device, more particularly to a kind of rescue speed of the replaceable energy absorption of convenient quickly
Poor device.
Background technology
At present, in working at height using protection by the way of be fairly simple mode, simply using safety rope as with fixation
The connection of bar, to ensure the safety of working at height personnel, but with the rapid development of science and technology, high-altitude working safety rope
Obtained technological improvement, but it is present be easily separated from, activity is poor, and tenderness difference, is easily broken off, and difficulty of construction is big, safety
Property is poor, and service life is short, and it is very inconvenient to be brought to user.
In view of the above shortcomings, the designer, is actively subject to research and innovation, to found a kind of the convenient of new structure
The rescue speed difference device of quick replaceable energy absorption, makes it with more the utility value in industry.
The content of the invention
In order to solve the above technical problems, the rescue the object of the present invention is to provide a kind of replaceable energy absorption of convenient quickly
Speed difference device.
To achieve the above object, the present invention adopts the following technical scheme that：
A kind of rescue speed difference device of the replaceable energy absorption of convenient quickly, including the first housing and the second housing, it is described
First housing is matched with the second housing and phase split is set, and is equipped with and accommodates in first housing and second shell body of phase split
Area, is provided with swing mechanism in the receiving area, and the swing mechanism includes the first support plate and the second support plate, and described first
Support plate and the second support plate are installed on the inner wall of the first housing and the second housing respectively, between the two equipped with spacing, and two
Mutually fixed by support shaft between person, pulley is provided between first support plate and the second support plate, the pulley
Side is provided with spring slotted disk, and volute spring is provided with the spring slotted disk, and buckle has spring bumper cover on the spring slotted disk,
The opposite side of the pulley is provided with fixed convex disk, fixed convex disk is fixed on through pulley on spring slotted disk by screw, institute
State and be set with bearing on fixed convex disk, wheel shaft sequentially passes through the convex disk of the fixation, pulley, spring slotted disk, volute spring and spring
The central shaft of cover board, wherein, the center shaft end of wheel shaft and volute spring is mutually fixedly installed, and volute spring is done with the rotation of wheel shaft
Tighten or loosen setting, be installed in through one end of the wheel shaft of spring bumper cover in the first support plate, the wheel shaft it is another
Hold through the circular hole opened up in the second support plate, the 3rd housing, second housing and the 3rd are provided with second housing
Energy absorbing device and pawl are provided between housing, one end of the energy absorbing device passes through the other end of wheel shaft, and inserts
It is connected on fixed convex disk, the pawl is arranged on the second support plate, is filled positioned at the upper end of energy absorbing device and with energy absorption
The setting that is meshed is put, around being connected on pulley, the other end of steel wire rope, which passes through, mutually splices the first housing and second for one end of steel wire rope
Housing is external on connector.
Further, the rescue speed difference device of the replaceable energy absorption of a kind of convenient quickly, wherein, further include close
Seal, is installed at all part mating connections.
Further, the rescue speed difference device of the replaceable energy absorption of a kind of convenient quickly, wherein, phase split
The upper end of first housing and the second housing be provided with anchor point.
Further, the rescue speed difference device of the replaceable energy absorption of a kind of convenient quickly, wherein, described
It is provided with first housing of anchor point both sides phase split and the second housing upper end and connects button.
Again further, the rescue speed difference device of the replaceable energy absorption of a kind of convenient quickly, wherein, it is described
Clutch shaft bearing is provided between spring bumper cover and the first support plate, is sleeved on wheel shaft.
Again further, the rescue speed difference device of the replaceable energy absorption of a kind of convenient quickly, wherein, it is described
Deliverance apparatus is provided between second housing and the 3rd housing, positioned at the underface of energy absorbing device, in second support plate
Through hole is offered, positioned at the underface of circular hole, the deliverance apparatus is installed on through hole, is meshed with the gear that pulley is equipped with
Set, the upper end of the through hole is provided with pawl, and the pawl is engaged with deliverance apparatus.
Again further, the rescue speed difference device of the replaceable energy absorption of a kind of convenient quickly, wherein, it is described
Handle is provided with the side of first shell.
Again further, the rescue speed difference device of the replaceable energy absorption of a kind of convenient quickly, wherein, it is described
Fixed steel wire rope fixing part, the perforation phase of the fixing piece and the first housing of steel wire penetrating and the second housing are provided with pulley
It is correspondingly arranged.
Again further, the rescue speed difference device of the replaceable energy absorption of a kind of convenient quickly, wherein, it is described
Spring slotted disk and pulley are integrally formed setting.
According to the above aspect of the present invention, the present invention has at least the following advantages：
The present invention can be played slow by the cooperation between pulley, spring slotted disk, volute spring, wheel shaft and energy absorbing device
The effect of drop, make operating personnel in working at height, can be effectively ensured the personal safety of operating personnel, while the device can be
More change steel rope in the case of the first shell and the second housing is not dismantled, is replaced its convenient, is effectively reduced the difficulty of replacement,
Improve work efficiency.As long as after the present invention dismantles the 3rd housing at the same time, with regard to energy absorbing device can be replaced, replacement is improved
Efficiency.As long as the part being connected in the present invention uses sealing ring, its leakproofness is improved, effectively improves its waterproof effect.This
It deliverance apparatus is additionally used in invention can will quickly fall personnel and quickly saved, it is ensured that the safety of operating personnel.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention,
And can be practiced according to the content of specification, below with presently preferred embodiments of the present invention and coordinate attached drawing describe in detail as after.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, therefore be not construed as pair
The restriction of scope, for those of ordinary skill in the art, without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the structure diagram of the present invention.
Embodiment
With reference to the accompanying drawings and examples, the embodiment of the present invention is described in further detail.Implement below
Example is used to illustrate the present invention, but is not limited to the scope of the present invention.
In order to make those skilled in the art more fully understand the present invention program, below in conjunction with attached in the embodiment of the present invention
Figure, is clearly and completely described the technical solution in the embodiment of the present invention, it is clear that described embodiment is only this
Invention part of the embodiment, instead of all the embodiments.Embodiments of the present invention, which are generally described and illustrated herein in the accompanying drawings
Component can arrange and design with a variety of configurations.Therefore, the implementation of the invention to providing in the accompanying drawings below
The detailed description of example is not intended to limit the scope of claimed invention, but is merely representative of the selected implementation of the present invention
Example.Based on the embodiment of the present invention, those skilled in the art are obtained all on the premise of creative work is not made
Other embodiment, belongs to the scope of protection of the invention.
Embodiment
As shown in Figure 1, a kind of rescue speed difference device of the replaceable energy absorption of convenient quickly, including the first housing 1 and
Two housings 2, first housing 1 is matched with the second housing 2 and phase split is set, first housing 1 and second of phase split
Receiving area is equipped with housing 2, energy absorption mechanism is provided with the receiving area, the energy absorption mechanism includes the first support
3 and second support plate 4 of plate, 3 and second support plate 4 of the first support plate are installed in the first housing 1 and the second housing 2 respectively
On inner wall, between the two equipped with spacing, and to be fixed between the two by 8 phase of support shaft, support shaft 8 is arranged at intervals in upper and lower,
Pulley 11 is provided between first support plate, 3 and second support plate 4, the side of the pulley 11 is provided with spring slotted disk 7,
The spring slotted disk 7 in be provided with volute spring 6, buckle has spring bumper cover 5 on the spring slotted disk 7, the pulley 11
Opposite side is provided with fixed convex disk 14, fixed convex disk 14 is fixed on through pulley 11 on spring slotted disk 7 by screw, described solid
Bearing is set with fixed convex disk 14, wheel shaft 12 sequentially passes through the convex disk 14 of the fixation, pulley 11, spring slotted disk 7, volute spring 6
With the central shaft of spring bumper cover 5, wherein, wheel shaft 12 and the center shaft end of volute spring 6 are mutually fixedly installed, make volute spring 6 with
Setting is tightened or loosened in the rotation of wheel shaft 12, and the first support plate 3 is installed in through one end of the wheel shaft 12 of spring bumper cover 5
On, the other end of the wheel shaft 12 passes through the circular hole opened up in the second support plate 4, it is provided with the 3rd shell on second housing 2
Body, is provided with energy absorbing device 13 and pawl between 2 and the 3rd housing of the second housing, the energy absorbing device 13
One end passes through the other end of wheel shaft 12, and is plugged on fixed convex disk 14, and the pawl is arranged on the second support plate 4, positioned at energy
Measure the upper end of absorption plant 13 and the setting that is meshed with energy absorbing device 13, one end of steel wire rope is around being connected on pulley 11, steel
The other end of cord is through mutually splicing the first housing 1 and the second housing 2 is external on connector 10.By pulley, spring slotted disk,
The effect of being used cooperatively between volute spring, wheel shaft and energy absorbing device can play slow drop, makes operating personnel make in high-altitude
During industry, the personal safety of operating personnel can be effectively ensured.
Sealing ring is further included in the present invention, is installed on all parts place in mating connection, can effectively improve its waterproof effect
Fruit, easy to can be used normally on rainy day, it is ensured that the security of the device.
The upper end of first housing, 1 and second housing 2 of phase split in the present invention is provided with anchor point 9, in the anchor point
It is provided with first housing of both sides phase split and the second housing upper end and connects button.
Clutch shaft bearing (not shown) is provided between heretofore described 5 and first support plate 1 of spring bumper cover, is sleeved on wheel
On axis 12, pulley 11 is facilitated to work.
Deliverance apparatus is provided between heretofore described second housing, 2 and the 3rd housing, positioned at energy absorbing device 13
Underface, offers through hole in second support plate 4, and positioned at the underface of circular hole, the deliverance apparatus is installed on through hole,
Be meshed setting with the gear that pulley is equipped with, and the upper end of the through hole is provided with pawl, and the pawl matches with deliverance apparatus
Close.The people of whereabouts can timely be succoured by deliverance apparatus, it is ensured that the safety of operating personnel.
Fixed steel wire rope fixing part, the fixing piece and steel wire penetrating first are provided with heretofore described pulley 11
The corresponding setting of perforation of 1 and second housing 2 of housing, can need not be carried out the first housing and the second housing by fixing piece
Just more change steel rope is split, it is convenient to use again.
Handle is provided with the side of heretofore described first shell 1, facilitates the operation of operating personnel.
Heretofore described spring slotted disk 7 and pulley 11 are integrally formed setting.
The operation principle of the present invention is as follows：
During specific works, the receiving area between the first housing the second housing, mainly have pulley, wheel shaft, two pieces of support plates,
Steel wire rope and volute spring, the effect of volute spring are can voluntarily to be returned to after steel wire rope is extracted in pulley, the second housing
And the 3rd be provided with the pawl that replaceable acceptor of energy is matched somebody with somebody and used with it between housing, when operating personnel's falling from high altitude
When, steel wire rope is quickly extracted out, and pawl is engaged with the ratchet of energy absorbing device, pulley is stopped operating, and steel wire rope cannot be by
Extraction, plays the role of braking, so as to protect operating personnel, is produced when acceptor of energy can absorb user's tenesmus in braking
Energy so that tenesmus energy is less than 6kn, tenesmus distance is less than 2 meters, it is ensured that the safety of user.
There is deliverance apparatus between the second housing and the 3rd housing, operating personnel's falls and be suspended in sky by product braking
When middle, another one rescuer can use the deliverance apparatus in product, and rescue tool is inserted into deliverance apparatus and is rotated, so that
Outstanding skyborne user is risen or had and is fallen.
The present invention can be played slow by the cooperation between pulley, spring slotted disk, volute spring, wheel shaft and energy absorbing device
The effect of drop, make operating personnel in working at height, can be effectively ensured the personal safety of operating personnel, while the device can be
More change steel rope in the case of the first shell and the second housing is not dismantled, is replaced its convenient, is effectively reduced the difficulty of replacement,
Improve work efficiency.As long as after the present invention dismantles the 3rd housing at the same time, with regard to energy absorbing device can be replaced, replacement is improved
Efficiency.As long as the part being connected in the present invention uses sealing ring, its leakproofness is improved, effectively improves waterproof effect.This
It deliverance apparatus is additionally used in invention can will quickly fall personnel and quickly saved, it is ensured that the safety of operating personnel.
The above is only the preferred embodiment of the present invention, is not intended to limit the invention, it is noted that for this skill
For the those of ordinary skill in art field, without departing from the technical principles of the invention, can also make it is some improvement and
Modification, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (9)
- A kind of 1. rescue speed difference device of the replaceable energy absorption of convenient quickly, it is characterised in that：Including the first housing and second Housing, first housing is matched with the second housing and phase split is set, in first housing and second shell body of phase split Equipped with receiving area, swing mechanism is provided with the receiving area, the swing mechanism includes the first support plate and the second support plate, First support plate and the second support plate are installed on the inner wall of the first housing and the second housing respectively, between being equipped between the two Away from, and mutually fixed by support shaft between the two, pulley is provided between first support plate and the second support plate, it is described The side of pulley is provided with spring slotted disk, and volute spring is provided with the spring slotted disk, and buckle has bullet on the spring slotted disk Spring cover board, the opposite side of the pulley are provided with fixed convex disk, fixed convex disk is fixed on spring groove through pulley by screw On disk, bearing is set with the convex disk of fixation, wheel shaft sequentially passes through the convex disk of the fixation, pulley, spring slotted disk, volute spring With the central shaft of spring bumper cover, wherein, the center shaft end of wheel shaft and volute spring is mutually fixedly installed, and makes volute spring with wheel shaft Setting is tightened or loosened in rotation, is installed in through one end of the wheel shaft of spring bumper cover in the first support plate, the wheel shaft The other end through the circular hole opened up in the second support plate, be provided with the 3rd housing, second housing on second housing Energy absorbing device and pawl are provided between the 3rd housing, one end of the energy absorbing device passes through the another of wheel shaft End, and be plugged on fixed convex disk, the pawl is arranged on the second support plate, positioned at the upper end of energy absorbing device and and energy Absorption plant is meshed setting, and one end of steel wire rope is around being connected on pulley, and the other end of steel wire rope is through mutually splicing the first housing It is connected in vitro on connector with second shell.
- A kind of 2. rescue speed difference device of the replaceable energy absorption of convenient quickly according to claim 1, it is characterised in that： Sealing ring is further included, is installed at all part mating connections.
- A kind of 3. rescue speed difference device of the replaceable energy absorption of convenient quickly according to claim 1, it is characterised in that： The upper end of first housing and the second housing of phase split is provided with anchor point.
- A kind of 4. rescue speed difference device of the replaceable energy absorption of convenient quickly according to claim 3, it is characterised in that： It is provided with first housing of the anchor point both sides phase split and the second housing upper end and connects button.
- A kind of 5. rescue speed difference device of the replaceable energy absorption of convenient quickly according to claim 1, it is characterised in that： Clutch shaft bearing is provided between the spring bumper cover and the first support plate, is sleeved on wheel shaft.
- A kind of 6. rescue speed difference device of the replaceable energy absorption of convenient quickly according to claim 1, it is characterised in that： Deliverance apparatus is provided between second housing and the 3rd housing, positioned at the underface of energy absorbing device, second support Through hole is offered on plate, positioned at the underface of circular hole, the deliverance apparatus is installed on through hole, the gear phase being equipped with pulley Engagement is set, and the upper end of the through hole is provided with pawl, and the pawl is engaged with deliverance apparatus.
- A kind of 7. rescue speed difference device of the replaceable energy absorption of convenient quickly according to claim 1, it is characterised in that： Handle is provided with the side of first shell.
- A kind of 8. rescue speed difference device of the replaceable energy absorption of convenient quickly according to claim 1, it is characterised in that： It is provided with fixed steel wire rope fixing part on the pulley, the fixing piece and the first housing of steel wire penetrating and the second housing are worn The corresponding setting in hole.
- A kind of 9. rescue speed difference device of the replaceable energy absorption of convenient quickly according to claim 1, it is characterised in that： The spring slotted disk and pulley are integrally formed setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711444218.6A CN107929962A (en) | 2017-12-27 | 2017-12-27 | A kind of rescue speed difference device of the replaceable energy absorption of convenient quickly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711444218.6A CN107929962A (en) | 2017-12-27 | 2017-12-27 | A kind of rescue speed difference device of the replaceable energy absorption of convenient quickly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107929962A true CN107929962A (en) | 2018-04-20 |
Family
ID=61939388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711444218.6A Pending CN107929962A (en) | 2017-12-27 | 2017-12-27 | A kind of rescue speed difference device of the replaceable energy absorption of convenient quickly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107929962A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3946989A (en) * | 1972-05-22 | 1976-03-30 | Masao Tsuda | Slow descender including fluid and mechanical braking devices |
| US20050145435A1 (en) * | 2001-04-24 | 2005-07-07 | Choate Gary E. | Twin retractable for fall arrest |
| CN101808694A (en) * | 2007-09-28 | 2010-08-18 | Db工业股份有限公司 | Retrieval assembly |
| US20110100755A1 (en) * | 2009-11-02 | 2011-05-05 | D B Industries, Inc. | Brake assembly for a self-retracting lifeline assembly |
| US20110174914A1 (en) * | 2010-01-20 | 2011-07-21 | Gimmal Co., Ltd. | Connector device to prevent person from falling |
| US20120118670A1 (en) * | 2010-11-17 | 2012-05-17 | Reliance Industries, Llc | Retractable Fall Arrest WIth Component Assembly and Cantilevered Main Shaft |
| CN103830853A (en) * | 2014-03-03 | 2014-06-04 | 青岛亿和海丽安防科技有限公司 | Self-return type coaxial descent control device |
| CN107007952A (en) * | 2017-03-29 | 2017-08-04 | 温州赛凯劳动防护装备有限公司 | A kind of speed difference automatic controller of the overall deliverance apparatus of band |
| CN107376151A (en) * | 2017-08-23 | 2017-11-24 | 浙江三锋实业股份有限公司 | A kind of multi-functional anti-fall descending lifeline |
| CN207856095U (en) * | 2017-12-27 | 2018-09-14 | 代尔塔（中国）安全防护有限公司 | A kind of rescue speed difference device of the replaceable energy absorption of convenient quickly |
-
2017
- 2017-12-27 CN CN201711444218.6A patent/CN107929962A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3946989A (en) * | 1972-05-22 | 1976-03-30 | Masao Tsuda | Slow descender including fluid and mechanical braking devices |
| US20050145435A1 (en) * | 2001-04-24 | 2005-07-07 | Choate Gary E. | Twin retractable for fall arrest |
| CN101808694A (en) * | 2007-09-28 | 2010-08-18 | Db工业股份有限公司 | Retrieval assembly |
| US20110100755A1 (en) * | 2009-11-02 | 2011-05-05 | D B Industries, Inc. | Brake assembly for a self-retracting lifeline assembly |
| US20110174914A1 (en) * | 2010-01-20 | 2011-07-21 | Gimmal Co., Ltd. | Connector device to prevent person from falling |
| US20120118670A1 (en) * | 2010-11-17 | 2012-05-17 | Reliance Industries, Llc | Retractable Fall Arrest WIth Component Assembly and Cantilevered Main Shaft |
| CN103830853A (en) * | 2014-03-03 | 2014-06-04 | 青岛亿和海丽安防科技有限公司 | Self-return type coaxial descent control device |
| CN107007952A (en) * | 2017-03-29 | 2017-08-04 | 温州赛凯劳动防护装备有限公司 | A kind of speed difference automatic controller of the overall deliverance apparatus of band |
| CN107376151A (en) * | 2017-08-23 | 2017-11-24 | 浙江三锋实业股份有限公司 | A kind of multi-functional anti-fall descending lifeline |
| CN207856095U (en) * | 2017-12-27 | 2018-09-14 | 代尔塔（中国）安全防护有限公司 | A kind of rescue speed difference device of the replaceable energy absorption of convenient quickly |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20180420 |