CN206600143U - A kind of large-scale water tower cat ladder - Google Patents
A kind of large-scale water tower cat ladder Download PDFInfo
- Publication number
- CN206600143U CN206600143U CN201720036362.5U CN201720036362U CN206600143U CN 206600143 U CN206600143 U CN 206600143U CN 201720036362 U CN201720036362 U CN 201720036362U CN 206600143 U CN206600143 U CN 206600143U
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- cat ladder
- ladder
- tower body
- shaped
- scale water
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Abstract
The utility model discloses a kind of large-scale water tower cat ladder, it is intended to solves staff and climbs to the problem of column head is inconvenient by vertical cat ladder, its drip irrigation device is：Including tower body and cat ladder, the cat ladder upper end is articulated with the tower body top edge, and the cat ladder lower end sliding is connected with extension ladder, and the cat ladder is provided with to be contacted at ground or draw in the fixation kit in the cat ladder for locking the extension ladder inclination.A kind of large-scale water tower of the present utility model has the advantages that to facilitate staff to carry out cat ladder with cat ladder.
Description
Technical field
The utility model is related to a kind of large-scale water tower field, more specifically, it relates to a kind of large-scale water tower cat ladder.
Background technology
Largely to be supplied during concrete production with water, it will usually which a large-scale water tower, water are installed on the ground
There is the damage of the rubbish such as many incrustation scales or water tower in tower, therefore will be to water tower inside inside using water tower after a period of time
It is vertically-mounted generally in the tower wall in water tower to have cat ladder because water tower height is higher when cleaning or maintenance, reached by cat ladder
Operated to column head, or enter water tower inside from column head and operated.
Current large-scale water tower is to be vertically fixed cat ladder in the tower wall of water tower, and water tower top is climbed to by vertical cat ladder
Portion.
But the cat ladder staff being vertically arranged ladder during climbing is excessively precipitous, therefore there is staff
The problem of climbing to inconvenient during column head by vertical cat ladder.
Utility model content
In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of large-scale water tower cat ladder, tool
Have the advantages that to facilitate staff's cat ladder.
Above-mentioned technical purpose of the present utility model technical scheme is that：A kind of large-scale water tower is with climbing
Ladder, including tower body and cat ladder, the cat ladder upper end are articulated with the tower body top edge, and the cat ladder lower end sliding, which is connected with, stretches
Contracting ladder, the cat ladder is provided with to be contacted at ground or draws in the fixation group in the cat ladder for locking the extension ladder inclination
Part.
By using above-mentioned technical proposal, the cat ladder on tower body is fixed on tower body vertically in the lower of situation about need not use
On, when staff will be reached by cat ladder at the top of tower body, by cat ladder lower end inclination opening, then open the fixation on cat ladder
The extension ladder that component makes sliding be connected to cat ladder lower end glides to contradicting and is fixed on extension ladder on ground, then by fixation kit
Reach that cat ladder is obliquely installed on cat ladder, staff compares the cat ladder being vertically arranged by the cat ladder being obliquely installed is pedaling the mistake of ladder
More facilitate in journey.
The utility model is further arranged to：The cat ladder includes two first terraced side rods be arrangeding in parallel and is arranged on two
Between the individual first terraced side rod and above and below the described first terraced side rod it is spaced be used to climb it is multiple first horizontal
Ladder bars；The extension ladder includes two second terraced side rods be arrangeding in parallel and is arranged between two the described second terraced side rods and hangs down
Straight spaced the multiple second horizontal ladder bars for being used to climb above and below the described second terraced side rod；Under two the described first terraced side rods
End inner side is equipped with T-shaped embedded groove, and the described second terraced side rod sliding is connected in the T-shaped embedded groove, the first horizontal ladder bars
With setting of staggering above and below the described second horizontal ladder bars.
By using above-mentioned technical proposal, cat ladder passes through two the parallel first terraced side rods and multiple the first vertical horizontal ladders
Bar fixes composition cat ladder, cat ladder is firmly unlikely to deform, when the second terraced side rod is slided on T-shaped embedded groove, and the of setting of staggering
It is interference-free between one horizontal ladder bars and the second horizontal ladder bars.
The utility model is further arranged to：The fixation kit includes the latch for being arranged on the described first terraced side lower end
Hole, be arranged on the fixing hole that is engaged on the described second terraced side with the pin hole and at the same insert the pin hole and
The pin member of the fixing hole, two the described second terraced side lower ends are arranged at intervals with two fixing holes.
By using above-mentioned technical proposal, when the second terraced side rod on extension ladder is entirely located in inside T-shaped embedded groove, lead to
Pin member is crossed also cross pin hole and fixing hole, extension ladder is drawn in and is fixed on inside cat ladder, when extension ladder downslide inclination is supported
When touching on the ground, by fixing hole and same pin hole of the pin member also cross another group of setting, fix extension ladder
On cat ladder, whole ladder is inclined on tower body, facilitate progress to pedal terraced operation.
The utility model is further arranged to：Being provided between the cat ladder and the tower body is used to support the institute being obliquely installed
State the support component of cat ladder.
By using above-mentioned technical proposal, the cat ladder being obliquely installed, because the length of cat ladder is longer, in the process of climbing
In, cause cat ladder to rock, increase unsafe factor, cat ladder is supported by support component, increase the stability of cat ladder, enter
And increase the security of climbing personnel.
The utility model is further arranged to：The support component includes support bar and slipping block, the T-shaped embedded groove
T-shaped slippage slot is offered on the wall of side and the T-shaped slippage slot is oppositely arranged with the tower body, the sliding block is slided positioned at the T-shaped
Move in groove, described support bar one end is hinged on the tower body, the other end is hinged on the sliding block to realize that the cat ladder turns
Move support component when being positioned on the tower body to draw between the tower body and the cat ladder, the slipping block is located at institute
Slipping block upper end during Support Position is stated to contradict on the T-shaped slippage slot upper end roof.
By using above-mentioned technical proposal, when cat ladder when not in use, cat ladder is rotated and is fixed on vertically on tower body, simultaneously sliding
Block is to lower sliding in T-shaped slippage slot, and the support bar one end being hinged on slipping block is together moved down, until cat ladder is vertical
When being fixed on tower body, support bar is vertically positioned between cat ladder and tower body, during inclination opening cat ladder is rotated, and T-shaped is slided
The slipping block moved in groove slides upwards, and when slipping block upper end contradicts the upper end roof in T-shaped slippage slot, support bar reaches branch
Support position is supported, and increases the stability of cat ladder.
The utility model is further arranged to：Being provided with the T-shaped embedded groove is used to fix the support component positioned at branch
Support limiter assembly during position.
By using above-mentioned technical proposal, when cat ladder rotation is obliquely installed, support bar component is supported on cat ladder, simultaneously sliding
Move block upper end end to contradict on the upper end roof of T-shaped slippage slot, because staff is during climbing, cat ladder, which exists, to shake
It is dynamic, may cause the situation of slipping block slide downward, and then influence the stability of cat ladder, by limiter assembly limit slipping block to
Lower movement, makes support component is stable to be supported on cat ladder, further the stability of increase cat ladder.
The utility model is further arranged to：The limiter assembly includes elastic component and confinement block, the elastic component and institute
Confinement block is stated in the T-shaped embedded groove, is offered on the side wall of the T-shaped embedded groove and slides trench bottom phase with the T-shaped
Logical limiting holes, described confinement block one end is movably connected in the limiting holes, and the other end is fixed on the elastic component, and bullet
Property the part other end be fixed in T-shaped insertion groove sidewall；The confinement block is in contact with the T-shaped embedded groove upper end roof,
The slipping block lower end is in contact with the limiting holes upper end-face edge when slipping block is located at Support Position；Close to the elasticity
The confinement block lower surface inclined-plane of part is set, and the end of the described second terraced side rod is equally engaged with the confinement block inclined-plane
Inclined-plane set；The confinement block side is provided with conflict block.
By using above-mentioned technical proposal, when they sup-port is on the cat ladder and slipping block upper side wall contradict in T
During shape slippage slot upper end roof, confinement block makes the front end of confinement block pass through limiting holes under the elastic force effect of elastic component, makes limitation
The effect that fixed slipping block is reached in the lower wall of slipping block, and the conflict that confinement block side is set are contradicted on the upside of block front end
Block, it is to avoid confinement block passes through limiting holes under the elastic force effect of elastic component；When cat ladder is in the case of, cat ladder lower end is slided
Move two second of extension ladder terraced side rods of connection in the presence of the manpower on sliding, the second terraced side rod upper end end vamp and limitation
Block inclined-plane is inconsistent, makes confinement block compression elastic piece, while confinement block front end departs from T-shaped slippage slot, then rotating cat ladder makes
Slipping block, to lower sliding, reaches space-saving effect in T-shaped slippage slot.
The utility model is further arranged to：The cat ladder is provided with the first otic placode, and the tower body is provided with and described the
The second otic placode that one otic placode is engaged, first otic placode and second otic placode are fixed by screw bolt and nut.
By using above-mentioned technical proposal, when cat ladder is placed vertically, by screw bolt and nut by the first ear on cat ladder
The second otic placode on plate and tower body is fixed, and reaches the effect of fixed cat ladder.
The utility model is further arranged to：The cat ladder both sides are provided with handrail.
By using above-mentioned technical proposal, the handrail set in cat ladder both sides facilitates staff during cat ladder
Gripping force, increase cat ladder process security.
The utility model is further arranged to：The tower body top edge is provided with guard rail.
By using above-mentioned technical proposal, staff is set when being repaired or cleaning tower body at tower body edge
Guard rail, further increase staff security.
In summary, the utility model has the advantages that：
First, the tiltable cat ladder set on tower body, facilitates staff to carry out cat ladder；
Second, the support component and limiter assembly that are set on cat ladder increase the stability of cat ladder, and then increase cat ladder mistake
The security of journey；
Third, the handrail set in cat ladder both sides and the guard rail set in tower body top edge, further increase and climb
The security of terraced personnel.
Brief description of the drawings
Fig. 1 is overall structure diagram when cat ladder is vertically arranged in the present embodiment；
Fig. 2 is the enlarged drawing at A in Fig. 1；
Fig. 3 is overall structure diagram when cat ladder is obliquely installed in the present embodiment；
Fig. 4 is the enlarged drawing at B in Fig. 3；
Fig. 5 is the enlarged drawing at C in Fig. 3；
Fig. 6 is the enlarged drawing at D in Fig. 3；
Fig. 7 is the first terraced side rod internal structure schematic diagram in the present embodiment；
Fig. 8 is the structural representation of limiter assembly in the present embodiment；
Fig. 9 is the structural representation of the second terraced side rod upper end in the present embodiment.
In figure：1st, tower body；2nd, cat ladder；3rd, extension ladder；4th, fixation kit；5th, the first terraced side rod；6th, the first horizontal ladder bars；7th,
Two terraced side rods；8th, the second horizontal ladder bars；9th, T-shaped embedded groove；10th, pin hole；11st, fixing hole；12nd, pin member；13rd, support component；
14th, support bar；15th, slipping block；16th, T-shaped slippage slot；17th, limiter assembly；18th, elastic component；19th, confinement block；20th, limiting holes；
21st, block is contradicted；22nd, the first otic placode；23rd, the second otic placode；24th, handrail；25th, guard rail.
Embodiment
With reference to the accompanying drawings and examples, the utility model is described in detail.
A kind of large-scale water tower cat ladder, as shown in figure 1, including tower body 1 and cat ladder 2, the tower body 1 of water tower sets for cylinder
Put, the top of tower body 1 is welded with guard rail 25, guard rail 25 sets around the top edge of tower body 1 and leaves import and export；On cat ladder 2
End is hinged at the top edge of tower body 1.
As described in Figure 2, it is welded with the first otic placode 22, tower body 1 and is welded with and the first ear in the lower end left and right sidewall of cat ladder 2
The second otic placode 23 that plate 22 is engaged, the first otic placode 22 and the second otic placode 23 are fixed by screw bolt and nut.
As shown in figure 3, the sliding of the lower end of cat ladder 2 is connected with extension ladder 3, cat ladder 2 includes two first terraced side rods 5 and multiple the
One horizontal ladder bars 6, two first terraced side rods 5 be arranged in parallel, and multiple first horizontal ladder bars 6 are between the upper and lower every being welded on be arranged in parallel two
Between first terraced side rod 5 and perpendicular to the first terraced side rod 5；Handrail 24 is welded with two first terraced side rods 5；Extension ladder 3 is wrapped
Two second terraced side rods 7 and multiple second horizontal ladder bars 8 are included, two second terraced side rods 7 be arranged in parallel, in multiple second horizontal ladder bars 8
Lower interval is welded between be arranged in parallel two second terraced side rods 7 and perpendicular to the second terraced side rod 7, and the first horizontal ladder bars 6 with
Second horizontal ladder bars stagger setting about 8, interference-free when extension ladder 3 is slid on cat ladder 2.
As shown in Figure 4 and Figure 5, the first terraced lower end of side rod 5, which is upwardly extended, offers T-shaped embedded groove 9, and the second terraced side rod 7 is slided
Move and be connected in T-shaped embedded groove 9 and the notch of T-shaped embedded groove 9 is located on the second terraced side of side rod 7, the first terraced side rod 5 and is provided with
Fixation kit 4, fixation kit 4 is opened up including the terraced lower end interval of side rod 7 of pin hole 10, second that the first terraced lower end of side rod 5 is opened up
Two fixing holes 11 for being engaged with pin hole 10 and the pin member 12 of dead bolt bore 10 and fixing hole 11, fixing hole simultaneously
11 make the second terraced side rod 7 be fixed on the first terraced side rod 5 with reality in same position with pin hole 10 by the insertion of pin member 12
The fixation that fixation and extension ladder 3 when existing extension ladder 3 glides are drawn in.
As shown in Figures 6 and 7, T-shaped slippage slot 16 is offered on the side wall of T-shaped embedded groove 9 of the first terraced side rod 5, and T-shaped is slided
The notch of groove 16 is moved towards tower body 1, the internal slide of T-shaped slippage slot 16 has is provided with support group on slipping block 15, the first terraced side rod 5
Part 13, support component 13 includes slipping block 15 and support bar 14, and the one end of support bar 14 is hinged on slipping block 15, and the other end is hinged
On tower body 1.
As shown in Figure 8 and Figure 9, slipping block 15 is located at the upper end of T-shaped slippage slot 16 and the upper end of slipping block 15 and contradicted in T-shaped sliding
When on the upper end cell wall of groove 16, limiter assembly 17 is provided with the upper end cell wall position of T-shaped embedded groove 9, limiter assembly 17 includes elasticity
Part 18 and confinement block 19, elastic component 18 are spring, offer and are communicated with the side wall of T-shaped embedded groove 9 in the bottom of T-shaped slippage slot 16
Limiting holes 20, positioned at the upper end roof of the aperture top edge of limiting holes 20 and the T-shaped slippage slot 16 of T-shaped slippage slot 16 distance and
The lower-upper length of slipping block 15 is identical, and the front end of confinement block 19 is movably connected in limiting holes 20, and the rear end of confinement block 19 is fixed on bullet
On one end of spring, and the spring other end is fixed on the side wall of T-shaped embedded groove 9, close to spring one end in the lower wall of confinement block 19
Set in inclined-plane, the second terraced upper end end portion of side rod 7 is provided with the inclined-plane that confinement block 19 is engaged, and the side of confinement block 19 is welded with
Block 21 is contradicted, the confinement block 19 and T-shaped slippage slot realized on limiter assembly 17 are coordinated by the terraced side rod 7 of limiter assembly 17 and second
16 upper end cell walls grip slipping block 15 or confinement block 19 is departed from T-shaped slippage slot 16, slipping block 15 is slidably received
Contracting support bar 14.
The course of work：When staff will reach 1 top of tower body, rotating cat ladder 2 tilts cat ladder 2, while T-shaped
Slipping block 15 in slippage slot 16 drives support bar 14 to move up, when the upper end of slipping block 15 is contradicted in the upper of T-shaped slippage slot 16
During the roof at end, cat ladder 2 stops operating and moves down extension ladder 3, and the upper end of the second terraced side rod 7 is oblique with confinement block 19
Face is separated, and the front end of confinement block 19 is entered in T-shaped slippage slot 16 by limiting holes 20, the upper side wall of confinement block 19 is contradicted in cunning
In the lower wall for moving block 15, the movement for gripping slipping block 15 is reached, makes support bar 14 is stable to be supported on cat ladder 2；Together
When extension ladder 3 glide contradict on the ground, then by pin member 12 fix extension ladder 3, make cat ladder 2 be inclined at ground and
On tower body 1, facilitate cat ladder 2.
Described above is only preferred embodiment of the present utility model, and protection domain of the present utility model is not limited merely to
Above-described embodiment, all technical schemes belonged under the utility model thinking belong to protection domain of the present utility model.It should refer to
Go out, for those skilled in the art, some improvement under the premise of the utility model principle is not departed from and
Retouching, these improvements and modifications also should be regarded as protection domain of the present utility model.
Claims (10)
1. a kind of large-scale water tower cat ladder, including tower body (1) and cat ladder (2), it is characterised in that：Cat ladder (2) upper end is hinged
In the tower body (1) top edge, cat ladder (2) the lower end sliding is connected with extension ladder (3), and the cat ladder (2) is provided with use
Ground is contacted in locking extension ladder (3) inclination or is drawn in the fixation kit (4) in the cat ladder (2).
2. a kind of large-scale water tower cat ladder according to claim 1, it is characterised in that：The cat ladder (2) includes parallel set
Put two first terraced side rods (5) and it is arranged between two the described first terraced side rods (5) and perpendicular to the described first ladder side rod
(5) it is spaced up and down to be used for the multiple first horizontal ladder bars (6) of climbing；The extension ladder (3) includes two be arranged in parallel
Second terraced side rod (7) and it is arranged between two the described second terraced side rods (7) and perpendicular to the described second ladder side rod (7) between the upper and lower
Every the multiple second horizontal ladder bars (8) for being used to climb of setting；It is embedding that two described first terraced side rod (5) lower end insides are equipped with T-shaped
Enter groove (9), the described second terraced side rod (7) sliding is connected in the T-shaped embedded groove (9), the first horizontal ladder bars (6) with it is described
Second horizontal ladder bars (8) are staggered setting up and down.
3. a kind of large-scale water tower cat ladder according to claim 2, it is characterised in that：The fixation kit (4) includes setting
Put the described first ladder while lower end pin hole (10), be arranged on second ladder while on be engaged with the pin hole (10)
Fixing hole (11) and the pin member (12) for inserting the pin hole (10) and the fixing hole (11) simultaneously, described in two
Second terraced side lower end is arranged at intervals with two fixing holes (11).
4. a kind of large-scale water tower cat ladder according to claim 3, it is characterised in that：The cat ladder (2) and the tower body
(1) support component (13) for being used for supporting the cat ladder (2) being obliquely installed is provided between.
5. a kind of large-scale water tower cat ladder according to claim 4, it is characterised in that：The support component (13) includes branch
T-shaped slippage slot (16) is offered on strut (14) and slipping block (15), the side wall of the T-shaped embedded groove (9) and the T-shaped slides
Groove (16) is oppositely arranged with the tower body (1), and the slipping block (15) is located in the T-shaped slippage slot (16), the support bar
(14) one end is hinged on the tower body (1), and the other end is hinged on the slipping block (15) to realize that the cat ladder (2) is rotated
The support component (13) is drawn between the tower body (1) and the cat ladder (2) when being positioned on the tower body (1), described
Slipping block (15) is located at slipping block (15) upper end during Support Position and contradicted in T-shaped slippage slot (16) upper end roof
On.
6. a kind of large-scale water tower cat ladder according to claim 5, it is characterised in that：It is provided with the T-shaped embedded groove (9)
Limiter assembly (17) during for fixing the support component (13) positioned at Support Position.
7. a kind of large-scale water tower cat ladder according to claim 6, it is characterised in that：The limiter assembly (17) includes bullet
Property part (18) and confinement block (19), the elastic component (18) and the confinement block (19) be located in the T-shaped embedded groove (9), institute
The limiting holes (20) communicated with T-shaped slippage slot (16) bottom, the limitation are offered on the side wall for stating T-shaped embedded groove (9)
Block (19) one end is movably connected in the limiting holes (20), and the other end is fixed on the elastic component (18), and elastic component
(18) other end is fixed on the wall of T-shaped embedded groove (9) side；The confinement block (19) is pushed up with T-shaped embedded groove (9) upper end
Wall is in contact, slipping block (15) lower end and end edge in the limiting holes (20) when the slipping block (15) is located at Support Position
Edge is in contact；Set close to the confinement block (19) lower surface inclined-plane of the elastic component (18), and the described second terraced side rod (7)
The inclined-plane that is equally engaged with the confinement block (19) inclined-plane of end set；Confinement block (19) side is provided with conflict block
(21)。
8. a kind of large-scale water tower cat ladder according to claim 1, it is characterised in that：The cat ladder (2) is provided with first
Otic placode (22), the tower body (1) is provided with the second otic placode (23) being engaged with first otic placode (22), first otic placode
(22) fixed with second otic placode (23) by screw bolt and nut.
9. a kind of large-scale water tower cat ladder according to claim 1, it is characterised in that：Cat ladder (2) both sides are provided with and helped
Hand (24).
10. a kind of large-scale water tower cat ladder according to claim 1, it is characterised in that：Tower body (1) top edge is set
There is guard rail (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720036362.5U CN206600143U (en) | 2017-01-11 | 2017-01-11 | A kind of large-scale water tower cat ladder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720036362.5U CN206600143U (en) | 2017-01-11 | 2017-01-11 | A kind of large-scale water tower cat ladder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206600143U true CN206600143U (en) | 2017-10-31 |
Family
ID=60149966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720036362.5U Expired - Fee Related CN206600143U (en) | 2017-01-11 | 2017-01-11 | A kind of large-scale water tower cat ladder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206600143U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109225693A (en) * | 2018-11-22 | 2019-01-18 | 无锡市诚信洗选设备有限公司 | The cyclone dust collectors of rain-proof ladder are set |
| CN109381815A (en) * | 2018-11-09 | 2019-02-26 | 捷达消防科技（苏州）股份有限公司 | The telescoping ascending climbing ladder apparatus of emergency rescue fire vehicle |
| CN113089780A (en) * | 2021-02-20 | 2021-07-09 | 博维筑成设计有限公司 | Water supply system for high-rise building |
| CN113250602A (en) * | 2021-04-24 | 2021-08-13 | 芜湖市通达锅炉有限公司 | Special extension type ladder rack for large boiler |
| JP7479044B2 (en) | 2020-05-14 | 2024-05-08 | 株式会社山本製作所 | Grain dryer inspection ladder storage structure |
-
2017
- 2017-01-11 CN CN201720036362.5U patent/CN206600143U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109381815A (en) * | 2018-11-09 | 2019-02-26 | 捷达消防科技（苏州）股份有限公司 | The telescoping ascending climbing ladder apparatus of emergency rescue fire vehicle |
| CN109381815B (en) * | 2018-11-09 | 2023-08-18 | 捷达消防科技（苏州）股份有限公司 | Telescopic climbing ladder device of rescue fire truck |
| CN109225693A (en) * | 2018-11-22 | 2019-01-18 | 无锡市诚信洗选设备有限公司 | The cyclone dust collectors of rain-proof ladder are set |
| JP7479044B2 (en) | 2020-05-14 | 2024-05-08 | 株式会社山本製作所 | Grain dryer inspection ladder storage structure |
| CN113089780A (en) * | 2021-02-20 | 2021-07-09 | 博维筑成设计有限公司 | Water supply system for high-rise building |
| CN113250602A (en) * | 2021-04-24 | 2021-08-13 | 芜湖市通达锅炉有限公司 | Special extension type ladder rack for large boiler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171031 Termination date: 20190111 |
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| CF01 | Termination of patent right due to non-payment of annual fee |