CN208362931U - A kind of municipal administration bridge construction platform - Google Patents

A kind of municipal administration bridge construction platform Download PDF

Info

Publication number
CN208362931U
CN208362931U CN201820948053.XU CN201820948053U CN208362931U CN 208362931 U CN208362931 U CN 208362931U CN 201820948053 U CN201820948053 U CN 201820948053U CN 208362931 U CN208362931 U CN 208362931U
Authority
CN
China
Prior art keywords
bridge
bridge guardrail
connection frame
vertical bar
guardrail
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.)
Active
Application number
CN201820948053.XU
Other languages
Chinese (zh)
Inventor
欧高翔
郭涛
李熊海
谯利锋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sichuan First Boat Construction Engineering Co Ltd
Original Assignee
Sichuan First Boat Construction Engineering Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sichuan First Boat Construction Engineering Co Ltd filed Critical Sichuan First Boat Construction Engineering Co Ltd
Priority to CN201820948053.XU priority Critical patent/CN208362931U/en
Application granted granted Critical
Publication of CN208362931U publication Critical patent/CN208362931U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)

Abstract

The utility model relates to a kind of municipal bridge construction platforms, belong to bridge construction ancillary equipment, solve the problems, such as that the operation platform being erected on bridge guardrail in the construction process may move, including the operation platform for hanging over the connection frame on bridge guardrail and being fixed on connection frame bottom end and constructing for operating personnel, idler wheel is provided between connection frame and the contact surface of bridge guardrail, the fixed structure for being fixed on connection frame on bridge guardrail is provided on connection frame, fixed structure includes being arranged on connection frame perpendicular to the crossbeam of bridge guardrail and being slidably arranged on crossbeam for locking bridge guardrail locking member, idler wheel rolls, connection frame moves on bridge guardrail, reach construction place, at this time, slide-and-lock part, so that locking member locks bridge guardrail, to avoid constructing to a certain extent When connection frame it is mobile, improve the safety of bridge high altitude operation to a certain extent.

Description

A kind of municipal administration bridge construction platform
Technical field
The utility model relates to bridge construction ancillary equipment field more particularly to a kind of municipal bridge construction platforms.
Background technique
In bridge construction or maintenance process, as installed rain on the outside of the installation of drainpipe, the defect repair of wing plate or bridge eaves It takes, generally requires by construction auxiliary equipment close contact operation side, sometimes by the limit of bridge local environment condition It makes, construction bracket can not be built under bridge, or be not easy to construct building construction bracket.
Authorization Notice No. is that CN207295494U Chinese patent discloses a kind of bridge workbench, including hangs over bridge protection Connection frame on column and be fixed on the connection frame bottom end and the workbench for operating personnel's construction, the connection frame with it is described It is provided with roll wheel assembly between the contact surface of bridge guardrail, is provided on the connection frame for driving the roll wheel assembly to turn The dynamic driving device for moving the connection frame along the bridge guardrail.The construction personnel to stand on the table passes through driving Device controls the rotation of roll wheel assembly, moves back and forth workbench, does not need to set special messenger's push-and-pull, still, work on bridge floor again When platform stopping is constructed, workbench be may move, and be easy to influence the work of operating personnel.
Utility model content
The purpose of this utility model is to provide a kind of municipal bridge construction platforms, have fixed structure, certain journey The mobile advantage of operation platform in construction is avoided on degree.
The above-mentioned purpose of the utility model has the technical scheme that
A kind of municipal administration bridge construction platform, including hanging over the connection frame on bridge guardrail and being fixed on connection frame bottom End and the operation platform constructed for operating personnel, are provided with idler wheel between the connection frame and the contact surface of bridge guardrail, The fixed structure for being fixed on connection frame on bridge guardrail is provided on the connection frame, the fixed structure includes setting It sets on connection frame perpendicular to the crossbeam of bridge guardrail and is slidably arranged on crossbeam for locking bridge guardrail locking member.
Implement above-mentioned technical proposal, idler wheel rolls, and connection frame moves on bridge guardrail, reach construction place, at this point, Slide-and-lock part, so that locking member locks bridge guardrail, to avoid connection frame when construction mobile to a certain extent, centainly The safety of bridge high altitude operation is improved in degree;Locking member is slidably arranged on crossbeam, can be adapted for the bridge of different-thickness Beam protective fence.
Further, locking member includes the latch for being slidably arranged in crossbeam both ends, the plane where the latch and cross The axial direction of beam is mutually perpendicular to, and the bridge guardrail is located between two latch.
Implement above-mentioned technical proposal, beam erection is on bridge guardrail and vertical with bridge guardrail short transverse, horizontal The axial direction of plane and crossbeam where the latch at beam both ends is mutually perpendicular to, and the latch positioned at bridge guardrail two sides is by bridge Protective fence locking, so that connection frame preferably be made mutually to fix with bridge guardrail.
Further, first sliding groove is offered along the length direction of crossbeam on the crossbeam, is provided on the latch Sliding block for being slided in first sliding groove.
Implement above-mentioned technical proposal, sliding block slides in first sliding groove, drives latch to slide on crossbeam, to make to lock Tight plate rolls or static close to or far from bridge guardrail convenient for idler wheel.
Further, the first sliding groove is dovetail groove, and the sliding block is dovetails.
Implement above-mentioned technical proposal, first sliding groove is dovetail groove, and sliding block is dovetails, while facilitating latch to slide, Latch can be prevented to move or be detached from the vertical direction cross bar.
Further, the driving cylinder for driving latch to move in first sliding groove is provided on the connection frame.
Implement above-mentioned technical proposal, is slided on crossbeam with driving cylinder driving latch, do not push manually, save labor Power, it is easy to operate, it is easy to implement.
Further, the latch is bonded side with bridge guardrail and is provided with hook thorn.
Implement above-mentioned technical proposal, the setting of hook thorn can place the skidding between latch and bridge guardrail, be convenient for The mobile probability of connection frame is reduced in construction.
Further, the connection frame includes the vertical bar for being parallel to bridge guardrail short transverse and being bonded with bridge guardrail Connecting rod with being erected on bridge guardrail perpendicular to vertical bar and for connecting vertical bar, the connecting rod both ends are provided with perpendicular Bar, the vertical bar include connecting with platform and the first vertical bar being bonded with bridge guardrail and be bonded with bridge guardrail second Vertical bar, first vertical bar and the second vertical bar are provided with idler wheel towards bridge guardrail side, and the second vertical bar sliding is set It sets in connecting rod.
Implementation above-mentioned technical proposal, the first vertical bar and the second vertical bar are provided with idler wheel towards bridge guardrail side, subtract Friction between few first vertical bar and the second vertical bar and bridge guardrail, operation platform easy to remove;The sliding setting of second vertical bar In connecting rod, the distance between adjustable second vertical bar and the first vertical bar, so that operation platform be made to be suitable for different-thickness Bridge guardrail.
Further, the second sliding slot for the sliding of the second vertical bar is offered in the connecting rod, is arranged on second vertical bar There is the stop for preventing the second vertical bar from sliding.
Implement above-mentioned technical proposal, the second vertical bar slides in second sliding slot, and stop prevents the second vertical bar sliding second Sliding in slot, the mode for making the second vertical bar slide or the second vertical bar is prevented to slide is simple, facilitates operation, easy to implement.
Further, the stop is the fastening bolt through connecting rod and with connecting rod rotation connection, the fastening spiral shell The nut for preventing connecting rod and the second vertical bar from being detached from is provided on bolt.
Implement above-mentioned technical proposal, rotate fastening bolt, be detached from nut and connecting rod, at this point, the second vertical bar can be the Sliding in two sliding slots, turns round fastening bolt, contradicts nut and connecting rod, at this point, the second vertical bar is fixed on the by fastening bolt In two sliding slots, stop structure is simple, facilitates operation, easy to implement.
Further, it is provided with jack on the connection frame, the telescopic direction of the jack is towards bridge guardrail.
Implement above-mentioned technical proposal, idler wheel rolls, and connection frame moves on bridge guardrail, reach construction place, at this point, Start jack, jack is flexible, so that idler wheel and bridge guardrail is exerted a force while disengaging to bridge guardrail, thus the company of prevention It connects frame to move on bridge guardrail, improves the safety of bridge high altitude operation to a certain extent.
In conclusion the utility model has the following beneficial effects:
One, beam erection is on bridge guardrail and vertical with bridge guardrail short transverse, the latch at crossbeam both ends It is mutually perpendicular to crossbeam, the latch positioned at bridge guardrail two sides locks bridge guardrail, to keep away to a certain extent It is mobile to exempt from connection frame when construction, improves the safety of bridge high altitude operation to a certain extent;
Two, the second vertical bar is slidably arranged in connecting rod, the distance between adjustable second vertical bar and the first vertical bar, from And make bridge guardrail of the operation platform suitable for different-thickness.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram that the overall structure of the utility model embodiment one is placed on bridge guardrail;
Fig. 2 is the portion the A enlarged drawing in Fig. 1;
Fig. 3 is the integrally-built structural schematic diagram of the utility model embodiment one;
Fig. 4 is the fixed structure of the utility model embodiment one and the structural schematic diagram of connecting rod;
Fig. 5 is the integrally-built structural schematic diagram of the utility model embodiment two.
Appended drawing reference: 1, connection frame;11, vertical bar;111, the first vertical bar;112, the second vertical bar;12, connecting rod;121, Two sliding slots;2, operation platform;3, idler wheel;4, fixed structure;41, crossbeam;411, first sliding groove;42, locking member;421, it locks Plate;4211, sliding block;4212, hook pierces;5, cylinder is driven;6, fastening bolt;61, nut;7, jack.
Specific embodiment
In the following detailed description, many details are proposed, in order to the comprehensive understanding to the utility model.But It is, it will be apparent to those skilled in the art that the utility model can not need one in these details Implement in the case where a little details.Below the description of embodiment is used for the purpose of providing by showing the example of the utility model The utility model is more fully understood.
Below in conjunction with attached drawing, the technical solution of the utility model embodiment is described.
Embodiment one
As shown in Figure 1, a kind of municipal administration bridge construction platform, including hanging over the connection frame 1 on bridge guardrail and consolidating Due to 1 bottom end of connection frame and for operating personnel construction operation platform 2, connection frame 1 include be parallel to bridge guardrail height It direction and the vertical bar 11 being bonded with bridge guardrail and is erected on bridge guardrail perpendicular to vertical bar 11 and for connecting vertical bar 11 connecting rod 12,12 both ends of connecting rod are provided with vertical bar 11, and vertical bar 11 includes connecting with platform and being bonded with bridge guardrail The first vertical bar 111 and the second vertical bar 112 for being bonded with bridge guardrail, the first vertical bar 111 and the second vertical bar 112 towards bridge Protective fence side is provided with idler wheel 3, is provided in connecting rod 12 for being provided with rolling between the contact surface of bridge guardrail Wheel 3 reduces the friction between the first vertical bar 111 and the second vertical bar 112 and bridge guardrail, operation platform 2 easy to remove.Second Vertical bar 112 is slidably arranged in connecting rod 12, and the first vertical bar 111 is respectively provided with the second vertical bar 112 towards bridge guardrail side There is idler wheel 3, the second vertical bar 112 is slidably arranged in connecting rod 12, between adjustable second vertical bar 112 and the first vertical bar 111 Distance, thus make operation platform 2 be suitable for different-thickness bridge guardrail.
As shown in Figure 1, 2, offered in connecting rod 12 for the second vertical bar 112 sliding second sliding slot 121(referring to fig. 4), Be provided on second vertical bar 112 for prevent the second vertical bar 112 slide stop, stop be through connecting rod 12 and with even The fastening bolt 6 that extension bar 12 is rotatablely connected is provided with the spiral shell for preventing connecting rod 12 and the disengaging of the second vertical bar 112 in fastening bolt 6 Mother 61 rotates fastening bolt 6, is detached from nut 61 and connecting rod 12, at this point, the second vertical bar 112 can be slided in second sliding slot 121 It is dynamic, fastening bolt 6 is turned round, contradicts nut 61 and connecting rod 12, at this point, the second vertical bar 112 is fixed on second by fastening bolt 6 In sliding slot 121, stop structure is simple, facilitates operation, easy to implement.
As shown in Figure 3,4, the fixed structure for being fixed on connection frame 1 on bridge guardrail is provided on connection frame 1 4, fixed structure 4 includes being arranged on connection frame 1 to use perpendicular to the crossbeam of bridge guardrail 41 and being slidably arranged on crossbeam 41 In locking bridge guardrail locking member 42, locking member 42 includes the latch 421 for being slidably arranged in 41 both ends of crossbeam, latch The axial direction of plane and crossbeam 41 where 421 is mutually perpendicular to, and bridge guardrail is located between two latch 421, crossbeam 41 It is erected on bridge guardrail and vertical with bridge guardrail short transverse, latch 421 and 41 phase of crossbeam at 41 both ends of crossbeam Mutually vertical, the latch 421 positioned at bridge guardrail two sides locks bridge guardrail, to avoid constructing to a certain extent When connection frame 1 it is mobile, improve the safety of bridge high altitude operation to a certain extent;Locking member 42 is slidably arranged on crossbeam 41, It can be adapted for the bridge guardrail of different-thickness.Latch 421 is bonded side with bridge guardrail and is provided with hook thorn 4212, hook The setting of thorn 4212 can place the skidding between latch 421 and bridge guardrail, move convenient for reducing connection frame 1 in construction Dynamic probability.
As shown in Figure 3,4, first sliding groove 411, first sliding groove 411 are offered along the length direction of crossbeam 41 on crossbeam 41 For dovetail groove, the sliding block 4211 for sliding in first sliding groove 411 is provided on latch 421, sliding block 4211 is dovetails, Implement above-mentioned technical proposal, sliding block 4211 slides in first sliding groove 411, and drive latch 421 to slide on crossbeam 41, thus Make latch 421 close to or far from bridge guardrail, is rolled convenient for idler wheel 3 or static;First sliding groove 411 is dovetail groove, sliding block 4211 be dovetails, while facilitating latch 421 to slide, latch 421 can be prevented to move or be detached from the vertical direction cross Bar.The driving cylinder 5 for driving latch 421 to move in first sliding groove 411 is provided on connection frame 1, with driving cylinder 5 Driving latch 421 slides on crossbeam 41, saves labour, easy to operate.
The course of work:
Idler wheel 3 rolls, and connection frame 1 moves on bridge guardrail, and when reaching at construction location, starting driving cylinder 5 is driven Cylinder 5 of taking offence stretching, extension, driving cylinder 5 push latch 421 close to bridge guardrail, lock latch 421 by bridge guardrail, At this point, operation platform 2 will not in the upper movement of bridge guardrail, to avoid connection frame 1 when construction mobile to a certain extent, The safety of bridge high altitude operation is improved to a certain extent;After having constructed, starting driving cylinder 5, driving cylinder 5 is shunk, so that Bridge guardrail is detached from by locking member 42, at this point, idler wheel 3 can roll, moves operation platform 2.
Embodiment two
As shown in figure 5, a kind of municipal administration bridge construction platform, the present embodiment and the difference of embodiment one essentially consist in, Jack 7 is provided on connection frame 1, the telescopic direction of jack 7 is towards bridge guardrail, and idler wheel 3 rolls, and connection frame 1 is in bridge It is moved on beam protective fence, reaches construction location, at this point, starting jack 7, jack 7 is flexible, makes idler wheel 3 and bridge guardrail It exerts a force while disengaging to bridge guardrail, so that connection frame 1 be prevented to move on bridge guardrail, improves bridge to a certain extent The safety of deck-molding idle job.
Above embodiments are only to illustrate the technical solution of the utility model, rather than carry out to the protection scope of utility model Limitation.Obviously, described embodiment is only the utility model section Example, rather than whole embodiments.Based on these Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all Belong to the utility model scope of the claimed.
Although the utility model is described in detail referring to above-described embodiment, those of ordinary skill in the art are still Can it is according to circumstances mutual to the feature in various embodiments of the utility model that creative work not be made in the absence of conflict Other adjustment are made in combination, additions and deletions, to obtain different, essence without departing from the other technologies side of the design of the utility model Case, these technical solutions similarly belong to the utility model scope of the claimed.

Claims (10)

1. a kind of municipal administration bridge construction platform, including hanging over the connection frame on bridge guardrail (1) and being fixed on connection frame (1) bottom end and the operation platform (2) for operating personnel's construction, between the connection frame (1) and the contact surface of bridge guardrail It is provided with idler wheel (3), which is characterized in that be provided on the connection frame (1) for connection frame (1) to be fixed on bridge guardrail On fixed structure (4), the fixed structure (4) include be arranged on connection frame (1) perpendicular to the crossbeam of bridge guardrail (41) it and is slidably arranged on crossbeam (41) for locking the locking member (42) of bridge guardrail.
2. a kind of municipal bridge construction platform according to claim 1, which is characterized in that locking member (42) includes sliding Latch (421) of the dynamic setting at crossbeam (41) both ends, plane and the axial phase of crossbeam (41) where the latch (421) It is mutually vertical, and the bridge guardrail is located between two latch (421).
3. a kind of municipal bridge construction platform according to claim 2, which is characterized in that edge on the crossbeam (41) The length direction of crossbeam (41) offer first sliding groove (411), be provided on the latch (421) in first sliding groove (411) sliding block (4211) slided in.
4. a kind of municipal bridge construction platform according to claim 3, which is characterized in that the first sliding groove It (411) is dovetail groove, the sliding block (4211) is dovetails.
5. a kind of municipal bridge construction platform according to claim 3, which is characterized in that on the connection frame (1) It is provided with the driving cylinder (5) for driving latch (421) to move in first sliding groove (411).
6. a kind of municipal bridge construction platform according to claim 3, which is characterized in that the latch (421) The side being bonded with bridge guardrail is provided with hook thorn (4212).
7. a kind of municipal bridge construction platform according to claim 4, which is characterized in that connection frame (1) packet It includes and is parallel to bridge guardrail short transverse and the vertical bar (11) that is bonded with bridge guardrail and is erected at perpendicular to vertical bar (11) Connecting rod (12) on bridge guardrail and for connecting vertical bar (11), connecting rod (12) both ends are provided with vertical bar (11), The vertical bar (11) includes connecting and the first vertical bar (111) for being bonded with bridge guardrail and being bonded with bridge guardrail with platform The second vertical bar (112), first vertical bar (111) and the second vertical bar (112) are provided with rolling towards bridge guardrail side It takes turns (3), second vertical bar (112) is slidably arranged on connecting rod (12).
8. a kind of municipal bridge construction platform according to claim 7, which is characterized in that on the connecting rod (12) The second sliding slot (121) for the second vertical bar (112) sliding is offered, is provided on second vertical bar (112) for preventing the The stop of two vertical bars (112) sliding.
9. a kind of municipal bridge construction platform according to claim 8, which is characterized in that the stop be through Connecting rod (12) and fastening bolt (6) with connecting rod (12) rotation connection, prevention connection is provided on the fastening bolt (6) The nut (61) that bar (12) and the second vertical bar (112) are detached from.
10. a kind of municipal bridge construction platform according to claim 8, which is characterized in that on the connection frame (1) It is provided with jack (7), the telescopic direction of the jack (7) is towards bridge guardrail.
CN201820948053.XU 2018-06-19 2018-06-19 A kind of municipal administration bridge construction platform Active CN208362931U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201820948053.XU CN208362931U (en) 2018-06-19 2018-06-19 A kind of municipal administration bridge construction platform

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201820948053.XU CN208362931U (en) 2018-06-19 2018-06-19 A kind of municipal administration bridge construction platform

Publications (1)

Publication Number Publication Date
CN208362931U true CN208362931U (en) 2019-01-11

Family

ID=64929565

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201820948053.XU Active CN208362931U (en) 2018-06-19 2018-06-19 A kind of municipal administration bridge construction platform

Country Status (1)

Country Link
CN (1) CN208362931U (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109468962A (en) * 2019-01-08 2019-03-15 云南省建设投资控股集团有限公司 High-altitude construction auxiliary device and method
CN109750601A (en) * 2019-01-16 2019-05-14 四川同风源建设工程有限公司 A kind of highway bridge avris construction operation platform
CN111196326A (en) * 2020-02-19 2020-05-26 程晓斌 Highway waveform guardrail driving trolley
CN111778872A (en) * 2020-07-31 2020-10-16 孙喜军 A device that falls is prevented in construction for municipal bridge engineering
CN111877155A (en) * 2020-07-31 2020-11-03 孙喜军 Bridge engineering construction is with preventing equipment that falls
CN113529585A (en) * 2021-08-12 2021-10-22 中交一公局西北工程有限公司 Guardrail construction platform and installation method thereof

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109468962A (en) * 2019-01-08 2019-03-15 云南省建设投资控股集团有限公司 High-altitude construction auxiliary device and method
CN109750601A (en) * 2019-01-16 2019-05-14 四川同风源建设工程有限公司 A kind of highway bridge avris construction operation platform
CN109750601B (en) * 2019-01-16 2020-08-07 四川同风源建设工程有限公司 Highway bridge avris construction work platform
CN111196326A (en) * 2020-02-19 2020-05-26 程晓斌 Highway waveform guardrail driving trolley
CN111778872A (en) * 2020-07-31 2020-10-16 孙喜军 A device that falls is prevented in construction for municipal bridge engineering
CN111877155A (en) * 2020-07-31 2020-11-03 孙喜军 Bridge engineering construction is with preventing equipment that falls
CN113529585A (en) * 2021-08-12 2021-10-22 中交一公局西北工程有限公司 Guardrail construction platform and installation method thereof

Similar Documents

Publication Publication Date Title
CN208362931U (en) A kind of municipal administration bridge construction platform
CA2733317A1 (en) Self-climbing perimetric protection system for construction works in buildings
CN110259088B (en) Method for erecting external protection scaffold of building with twisted vertical face
CN108678365A (en) From angle hydraulic climbing form frame system
US4540150A (en) Self elevating formwork installation with variable geometry for making concrete surfaces, particularly very high concrete surfaces
CN213418443U (en) Self-climbing type elevator shaft operation platform
US3394776A (en) Suspended traveling scaffold
CN217054267U (en) Protection device construction structure
CN101457587B (en) Template mutually lifting climbing apparatus and method
CN217780548U (en) Safe hoisting equipment for building construction
CN114232968B (en) Attached lifting scaffold device
CN212359266U (en) A foldable maintenance platform for electric block
CN111764667B (en) Steel structure truss installation construction equipment and installation construction method
CN108999082B (en) Platform for bridge maintenance
CN210152247U (en) Construction hydraulic pressure template climbing device
CN210828255U (en) Telescopic mobile operation platform for side wall construction
CN218813173U (en) A moving platform for public road bridge roof beam anticollision barrier
CN214885319U (en) Vertical greening steel structure house building construction device
KR20020054259A (en) Bridge inspection device and construction method
CN117550501B (en) Climbing frame attached adjustable tower crane walkway and integral lifting method
CN218893910U (en) Railway construction machinery guard rail lifting device capable of preventing toppling
CN219972936U (en) Platform for bridge engineering bent cap construction
CN213952920U (en) Novel telescopic roof construction operation platform that uses in energy-conserving reduction of loss roof construction
CN218346759U (en) Movable steel structure canopy construction operation platform for warehouse
CN213448351U (en) Double-layer multifunctional on-off equipment maintenance platform

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant