CN201148725Y - Trolley type inclining-proof device adhering to elevating scaffold - Google Patents
Trolley type inclining-proof device adhering to elevating scaffold Download PDFInfo
- Publication number
- CN201148725Y CN201148725Y CNU2008200520538U CN200820052053U CN201148725Y CN 201148725 Y CN201148725 Y CN 201148725Y CN U2008200520538 U CNU2008200520538 U CN U2008200520538U CN 200820052053 U CN200820052053 U CN 200820052053U CN 201148725 Y CN201148725 Y CN 201148725Y
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- dumping
- proof device
- inclining
- roll
- track
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Abstract
The utility model discloses a pulley-type anti-roll device for attached lifting scaffold, which comprises anti-roll rails in the straight rod shape and having longitudinal concave surfaces, and an anti-roll assembly, wherein the anti-roll assembly has such a structure that 2 to 6 wall bolts penetrate through a wall body to fix a connection board attached to the wall surface, two brackets extending horizontally and arranged respectively on both sides of the anti-roll rails are fixed on the connection board, an anti-roll configuration box is arranged between the two brackets to make movement up and down relative to the anti-roll rails and is connected with the anti-roll rails through pulleys embedded in the concave surfaces of the anti-roll rails, and the pulleys are fixed on the anti-roll configuration box surrounding the anti-roll rails. The pulley-type anti-roll device has the advantages of good anti-roll property, high safety and reliability, convenient disassembly, low cost, and repeated use, and can improve the safety of an attached lifting scaffold and meet the requirement for safety operation of the attached lifting scaffold.
Description
Technical field
The utility model relates to a kind of construction implement, particularly a kind of attached lift scaffold inclining-proof device.
Background technology
Attached lift scaffold is the tool-type scaffold that a kind of branch is striden, do not landed, be generally 6～8 step framves, seek connections with on the exterior wall of building, satisfy the instructions for use of Structural Engineering and decoration of exterior wall construction, extensively adopted by high-building construction the section construction of scaffold.Its elevating movement is carried out lifting by electric block to adjustable shelf and inclining-proof device and is realized.When scaffold is in running order, inclining-proof device and body of wall relative fixed; When scaffold needs lifting, use electric block that support body is promoted, replace attached wall by load diagonal member and inclining-proof device, scaffold can be along the lifting successively of the preformed hole on the body of wall.The anti-function of toppling of attached lift scaffold is an important safety index, at present, the anti-dumping function of outrigger scaffold is to adopt the steel pipe guide rail to prevent that attached lift scaffold support body in lifting process from toppling, adopt wall-connecting piece to connect the wall mode and prevent that when support body remains static support body from toppling, used anti-dumping track is a common steel tube, its with the main frame of attached lift scaffold on the parallel installation of interior vertical rod, its wall-connecting piece is that fastener is connected with the side bar or the shear wall of building, the every floor of general requirements all will be provided with, connected mode adopts pre-buried screw on side bar or shear wall, be connected with anti-tilt device with screw rod through walls again after the form removal, because the external surface of common steel tube is a convex surface, it is little that fastener is in contact with it area, it is lower that the fastener antiskid moves ability, landing appears easily, so the inclining-proof device anti-dumping effect of this structure is limited, the quality of fastener own is uneven in addition, safety factor is lower, occurring fastener easily connects unstable, security incident takes place in the phenomenon of artificially removing and causing outrigger to topple.Its field of employment also is subjected to certain restriction, possibly can't use at following building: as towering buildings such as the tubular construction building of opening space building, justifying shear wall greatly, special-shaped building, chimney, water towers.Usually can not satisfy the desired two step three mid-span requirements of standard as setting up wall connecting rod according to a conventional method, and this type of building mostly is high-rise, the security incident that support body topples appears in wall-connecting piece easily as not meeting the demands, and to satisfy this requirement must be on wall power be cut embedded steel tube or ironware, must cause the wasting of resources to increase cost, not have economic feasibility.
Particularly attached lift scaffold is in lifting process, the steel pipe guide rail is when doing the effect of vertically guiding to the lifting of attached lift scaffold, the swing all around of attached lift scaffold can not be limited, elevating safety operation requirement can not be satisfied, by relevant working specification is forbidden.
The utility model content
The purpose of this utility model is to provide a kind of trolley type inclining-proof device of attached lift scaffold, and it has good anti-dumping performance, and is safe and reliable, for convenience detach, and member is with low cost, reusable.
The technical solution of the utility model is:
A kind of attached lifting scaffold trolley type inclining-proof device, comprise straight-bar shape anti-dumping track and 2 groups above be vertically fixed on fall prevention components on the body of wall along the anti-dumping track, it is characterized in that: described anti-dumping track is the straight-bar with vertical inner concave.
As to further improvement of the utility model, the structure of described fall prevention components is: 2-6 through-wall bolt passes the junction plate that body of wall will be affixed on metope and fixes, be fixed with on the junction plate two levels overhanging, place the support of anti-dumping track both sides respectively, set up the anti-dumping structure box of only doing relative motion up and down with the anti-dumping track between two supports, described anti-dumping structure box is connected with the anti-dumping track by the pulley that embeds anti-dumping track inner concave, and described pulley is fixed on the anti-dumping structure box box body that surrounds the anti-dumping track.
As to further improvement of the utility model, the support of described fall prevention components is provided with level trough, the both ends of anti-dumping structure box box body place respectively in the level trough of two stands, also be fixed with the telescopic adjustment plate between described two stands, be fixed with telescopic adjustment bolt on the telescopic adjustment plate with anti-dumping structure box box body Bolt Connection, described anti-dumping structure box box body is moved horizontally by the control of telescopic adjustment bolt, and the junction plate of described fall prevention components is provided with waist hole, ellipse garden.
As to further improvement of the utility model, described anti-dumping track is an i iron, and described anti-dumping structure box has a pair of pulley that embeds two relative inner concaves of i iron respectively.
As to further improvement of the utility model, described anti-dumping track is a channel-section steel, and described anti-dumping structure box has a pulley that embeds the channel-section steel inner concave.
As to further improvement of the utility model, described i iron is No. 10 i iron.
As to further improvement of the utility model, described channel-section steel is No. 63 channel-section steels.
The fall prevention components of described inclining-proof device successively is laid on the body of wall of the vertical floor of striding of attached lift scaffold, and quantity is that the number of plies of the vertical floor of striding of attached lift scaffold subtracts one.
The beneficial effects of the utility model are:
1, because anti-dumping track of the present utility model is the straight-bar with vertical inner concave, be generally i iron or channel-section steel, the rigidity of itself steel pipe more of the prior art strengthens greatly;
2, because its anti-dumping track has vertical inner concave, and anti-dumping structure box surrounds the anti-dumping track, make itself and anti-dumping track only do relative motion up and down, limited the swing all around of attached lift scaffold, fall prevention components is set to pulley type with the contact surface of anti-dumping track and contacts, both made things convenient for relatively moving of fall prevention components and anti-dumping track, the embedded way of contact has increased the supporting force that prevents that outrigger from tumbling again.
3, fall prevention components of the present utility model is provided with the telescopic adjustment plate and is fixed on the support, regulate the front and back position of anti-dumping structure box by the telescopic adjustment bolt, avoid that the error from the wall distance causes anti-dumping to construct the inner concave that box can not embed i iron or channel-section steel when assemble because of support body.Fall prevention components of the present utility model is by the fixing anti-dumping structure box and be connected building of support, and be provided with waist hole, ellipse garden with the building junction plate, when there is site error in the pre-embedded bolt hole on the shear wall of architecture enclosing or the side bar, inclining-proof device can be in waist hole, ellipse garden left and right adjusting, effect is installed and used in assurance, for convenience detach, member is with low cost, its wall-connecting piece has been saved half of materials than common steel tube wall-connecting piece, and is reusable.
4, the utility model pre-buried screw through walls on limit shear wall or frame beam supports mounting means with through-wall bolt horizontal fixed fall prevention components, avoided with building between the defective that connects of dependence fastener, its anti-ability of shearing strengthens greatly, and integral rigidity strengthens greatly.The verticality that keeps attached lift scaffold to greatest extent prevents that effectively attached lift scaffold from producing the inside or outside distortion of toppling.
5, the utility model can be installed by the mode of preformed hole, not limited by the form of building structure, can be adapted to steel reinforced concrete core tube engineering, towering engineering contour level building, for abnormally-structured building, be that floor height variation, profile variation, step contraction, garden arc, corner, balcony, bridging piece, cantilever platform etc. all adapt to.Avoid the use fastener as wall-connecting piece, can satisfy the desired two step three mid-span requirements of standard.
6, at attached lift scaffold in lifting process, anti-dumping guide rail of the present utility model and with connect the wall assembly and need not to throw off fully, the anti-dumping guide rail of this moment can play does the vertically effect of guiding to the lifting of attached lift scaffold, limit the swing all around of attached lift scaffold, satisfied elevating safety operation requirement.
Description of drawings
Fig. 1 is the structural representation of the utility model inclining-proof device;
Fig. 2 is the side structure schematic diagram of the utility model inclining-proof device;
Fig. 3 is the structural representation of the junction plate of the utility model inclining-proof device;
Fig. 4 is the view of installing and using of the utility model inclining-proof device.
Among the figure: vertical rod in 1-fall prevention components, 1-1-anti-dumping structure box, 1-2-telescopic adjustment plate, 1-3-fixed block junction plate, 1-4-pulley, 1-5 telescopic adjustment bolt, 1-6-support, 2-anti-dumping track, 3-and building junction plate, 4-through-wall bolt, the 5-attached lift scaffold, 6-typical floor flooring, 7-load hanging piece, 8-clamp catching device, 9-load diagonal member, 10-trolley type inclining-proof device, 11-electric lift, 12-load girder steel.
The specific embodiment
Embodiment 1:
One of certain engineering company's construction is totally 34 one storey buildings, typical floor floor height 3.00m, and roofing height 109.72m all adopts the frame-shear wall structure.Typical floor (7.22m to 109.72m) floor uses the attached lift scaffold construction, all adopts inclining-proof device of the present utility model.Its structure is as shown in Figure 1-Figure 3: anti-dumping track 2 is No. 10 i iron, the structure of fall prevention components 1 is: 2 M24 through-wall bolts 4 pass body of wall and will be affixed on the fixing with building junction plate 3 of metope, with be fixed with on the building junction plate 3 two levels overhanging, place the support 1-6 of anti-dumping track 2 both sides respectively, support 1-6 is provided with level trough, set up between two support 1-6 and 2 works of anti-dumping track anti-dumping structure box 1-1 of relative motion up and down, be provided with a pair of pulley 1-4 that embeds two relative inner concaves of i iron respectively in the anti-dumping structure box 1-1.Pulley 1-4 is fixed on the anti-dumping structure box 1-1 box body that surrounds anti-dumping track 2, the both ends of anti-dumping structure box 1-1 box body place respectively in the level trough of two stands 1-6, also be fixed with telescopic adjustment plate 1-2 between two stands 1-6, be fixed with telescopic adjustment bolt 1-5 on the telescopic adjustment plate 1-2 with anti-dumping structure box 1-1 box body Bolt Connection, anti-dumping structure box 1-1 box body is moved horizontally by telescopic adjustment bolt 1-5 control, being provided with 140mm with building junction plate 3 and growing waist hole, ellipse garden of fall prevention components 1.
Attached lift scaffold support body height is 14.1 meters, and vertically the number of plies of the floor of striding is 4, and the height of anti-dumping track is 7.8 meters less than the support body height.The installation and application of attached lifting scaffold trolley type inclining-proof device is: inclining-proof device is laid between attached lift scaffold and the body of wall, the anti-dumping parallel track is fixedly installed in the attached lift scaffold inboard, the mounting method of inclining-proof device is: at needs pre-buried a plurality of bolts hole on the shear wall of attached lift scaffold or the side bar are installed, quantity according to the length computation inclining-proof device of attached lift scaffold, the quantity of inclining-proof device is identical with the quantity of load diagonal member assembly, and the spacing between satisfied two inclining-proof devices is less than 7 meters, the area of the attached lift scaffold of striding is less than 110 square metres requirement, the fall prevention components of inclining-proof device successively is laid on the body of wall of the vertical floor of striding of attached lift scaffold, quantity is that the number of plies of the vertical floor of striding of attached lift scaffold subtracts one, and the attached lift scaffold vertically basecoat of the floor of striding is not laid.After treating that the assembling of attached lift scaffold support body finishes, anti-dumping track and the fixing parallel installation of interior vertical rod with above-mentioned quantity, the fall prevention components of above-mentioned quantity is inserted in from the anti-dumping rail end, move to respectively and place place, pre-embedded bolt hole on each shear wall or the side bar in advance, through-wall bolt with 2 is fixed, bottom that layer of attached lift scaffold is not installed fall prevention components, promptly can be user mode.
The vertical load of attached lift scaffold is born by being fixed on the body of wall and with the load diagonal member assembly that the attached lift scaffold base is fixedly connected, attached lift scaffold upwards (descending) moves through the realization of adjustment load diagonal member, mounting method when make progress at attached lift scaffold (the descending) of inclining-proof device is mobile is: behind (descending) the mobile 30cm that makes progress at attached lift scaffold, the fall prevention components of the end (top) portion separates with the anti-dumping track, stop to move, (descending) portion is removed and moved to this fall prevention components, continue to move, anti-dumping track top (end) portion is penetrated in this fall prevention components, with the through-wall bolt that places pre-embedded bolt hole on each shear wall or the side bar in advance this fall prevention components is fixed, so alternately realized lifting successively.
Construction sequence is: exterior wall reserve outer hole and ironware pre-buried → set up carriage → installations force-bearing base → install between vertical main frame → vertical main frame the horizontal truss → support body of installation set up → install anti-tilt device → installation diagonal member → installation girder steel → installation lifting means → installation electric-control system → test-run a machine → support body and rise frame → support body undercarriage → support body dismounting.
Construction point is:
One, body of wall preformed hole
Position according to the layout plan and the crane attached wall bearing of scaffold is provided with preformed hole on concrete wall.Preformed hole combines layout with the bolt hole of fixedly touching plate as far as possible, and preformed hole is by pre-buried formation of Φ 32mm pvc pipe.For lifting is carried out smoothly, the preformed hole center must be on same straight line; ± deviation≤10mm.
Two, install
Require according to design and assembly figure groups such as mounting guide rail spare, support body, through-wall bolt, inclining-proof device, load girder steel, lifting means decide into.
(1) the anti-dumping track is fixed together with the vertical main frame of typing.
(2) through-wall bolt is fixed on fall prevention components in the building structure.
(3) the anti-dumping track is enclosed within the fall prevention components.
(4) the load girder steel by model be M24 through-wall bolt and diagonal member independent stationary in building structure, lifting means is hooked on the load girder steel.
Three, lifting
As shown in Figure 4, after every preparation meets the requirements through inspection, electric block is linked to each other with support body.The method for improving of attached lift scaffold and program are: the load girder steel is good and sound and hang up electric block → electric block and hook attached lift scaffold force-bearing base and tension chain → inspection and connect electric wiring → starting electrical control cubicles and promote master switch → attached lift scaffold and begin liftings → attached lift scaffold and promote bottom about 30cm height behind the inclining-proof device getaway, remove fall prevention components immediately and move on the superstructure and fix, and adjust its position, close after allowing the guide rail top penetrate in the fall prevention components → to promote to put in place lifting master switch → install force-bearing base diagonal member → loosening electric block → make force-bearing base stressed → set wall connecting rod → attaching frame to enter duty, finish whole lifting process, attached lift scaffold has just been finished 1 lifting like this.Repeat said process, attached lift scaffold just can constantly promote (or decline).Chain block is hung on the 5th step of attached lift scaffold frame and the corresponding position of hoist, tie up on girder steel chain stressed, girder steel and top diagonal member are connected wall screw, with Chain block girder steel, diagonal member, electric block are promoted (or decline) one deck, install, can enter next lifting.
Embodiment 2:
Certain engineering company construction commercial residential buildings.This project is the frame-shear wall structure, 56000 square metres of building areas, and roofing height 89m, 1-3 layer are annex, ground 26+1 layer, underground 1 layer, typical floor 4-26 layer.Bring into use attached lift scaffold to construct from typical floor 4-26 layer.This building profile is comparatively complicated, and circular arc, corner, balcony, bridging piece are arranged around the building, and construction brings certain difficulty to outrigger.Need adopt fall prevention components bottom cushioning pad, bridging piece place to increase frame connection steel column at the circular arc place make support body and being connected of fall prevention components have enough stiffness to satisfy construction requirement.
The structure of fall prevention components is: 6 M24 through-wall bolts 4 pass body of wall and will be affixed on the fixing with building junction plate 3 of metope, with be fixed with on the building junction plate 3 two levels overhanging, place the support 1-6 of anti-dumping track 2 both sides respectively, support 1-6 is provided with level trough, set up between two support 1-6 and 2 works of anti-dumping track anti-dumping structure box 1-1 of relative motion up and down, be provided with a pair of pulley 1-4 that embeds two relative inner concaves of i iron respectively in the anti-dumping structure box 1-1.Pulley 1-4 is fixed on the anti-dumping structure box 1-1 box body that surrounds anti-dumping track 2, the both ends of anti-dumping structure box 1-1 box body place respectively in the level trough of two stands 1-6, also be fixed with telescopic adjustment plate 1-2 between two stands 1-6, be fixed with telescopic adjustment bolt 1-5 on the telescopic adjustment plate 1-2 with anti-dumping structure box 1-1 box body Bolt Connection, anti-dumping structure box 1-1 box body is moved horizontally by telescopic adjustment bolt 1-5 control, being provided with 140mm with building junction plate 3 and growing waist hole, ellipse garden of fall prevention components 1.
Attached lift scaffold support body height is 14.1 meters, and vertically the number of plies of the floor of striding is 4, and the height of anti-dumping track is 7.8 meters less than the support body height.The installation and application of attached lifting scaffold trolley type inclining-proof device, inclining-proof device is laid between attached lift scaffold and the body of wall, the anti-dumping parallel track is fixedly installed in the attached lift scaffold inboard, the mounting method of inclining-proof device is: at needs pre-buried a plurality of bolts hole on the shear wall of attached lift scaffold or the side bar are installed, quantity according to the length computation inclining-proof device of attached lift scaffold, the quantity of described inclining-proof device is identical with the quantity of load diagonal member assembly, and the spacing between satisfied two inclining-proof devices is less than 7 meters, the area of the attached lift scaffold of striding is less than 110 square metres requirement, the fall prevention components of described inclining-proof device successively is laid on the body of wall of the vertical floor of striding of attached lift scaffold, quantity is that the number of plies of the vertical floor of striding of attached lift scaffold subtracts one, and the attached lift scaffold vertically basecoat of the floor of striding is not laid.After treating that the assembling of attached lift scaffold support body finishes, anti-dumping track and the fixing parallel installation of interior vertical rod with above-mentioned quantity, the fall prevention components of above-mentioned quantity is inserted in from the anti-dumping rail end, move to respectively and place place, pre-embedded bolt hole on each shear wall or the side bar in advance, through-wall bolt with 2 is fixed, bottom that layer of attached lift scaffold is not installed fall prevention components, promptly can be user mode.
The vertical load of attached lift scaffold is born by being fixed on the body of wall and with the load diagonal member assembly that the attached lift scaffold base is fixedly connected, attached lift scaffold upwards (descending) moves through the realization of adjustment load diagonal member, mounting method when make progress at attached lift scaffold (the descending) of inclining-proof device is mobile is: behind (descending) the mobile 30cm that makes progress at attached lift scaffold, the fall prevention components of the end (top) portion separates with the anti-dumping track, stop to move, (descending) portion is removed and moved to this fall prevention components, continue to move, anti-dumping track top (end) portion is penetrated in this fall prevention components, with the through-wall bolt that places pre-embedded bolt hole on each shear wall or the side bar in advance this fall prevention components is fixed, so alternately realized lifting successively.
Its construction sequence, construction point and embodiment are basic identical.
The utility model is the form of structure with straight-bar of vertical inner concave including but not limited to above-mentioned embodiment as long as adopted the anti-dumping track, promptly belongs to protection domain of the present utility model.
Claims (8)
1, a kind of attached lifting scaffold trolley type inclining-proof device is characterized in that: it comprise straight-bar shape anti-dumping track and 2 groups above be vertically fixed on fall prevention components on the body of wall along the anti-dumping track, described anti-dumping track is the straight-bar with vertical inner concave.
2, attached lifting scaffold trolley type inclining-proof device according to claim 1, it is characterized in that: the structure of described fall prevention components is: 2-6 through-wall bolt passes the junction plate that body of wall will be affixed on metope and fixes, it is overhanging to be fixed with two levels on the junction plate, place the support of anti-dumping track both sides respectively, set up the anti-dumping structure box of only doing relative motion up and down with the anti-dumping track between two supports, described anti-dumping structure box is connected with the anti-dumping track by the pulley that embeds anti-dumping track inner concave, and described pulley is fixed on the anti-dumping structure box box body that surrounds the anti-dumping track.
3, attached lifting scaffold trolley type inclining-proof device according to claim 2, it is characterized in that: the support of described fall prevention components is provided with level trough, the both ends of anti-dumping structure box box body place respectively in the level trough of two stands, also be fixed with the telescopic adjustment plate between described two stands, be fixed with telescopic adjustment bolt on the telescopic adjustment plate with anti-dumping structure box box body Bolt Connection, described anti-dumping structure box box body is moved horizontally by the control of telescopic adjustment bolt, and the junction plate of described fall prevention components is provided with waist hole, ellipse garden.
4, attached lifting scaffold trolley type inclining-proof device according to claim 2 is characterized in that: described anti-dumping track is an i iron, and described anti-dumping structure box has a pair of pulley that embeds two relative inner concaves of i iron respectively.
5, attached lifting scaffold trolley type inclining-proof device according to claim 2 is characterized in that: described anti-dumping track is a channel-section steel, and described anti-dumping structure box has a pulley that embeds the channel-section steel inner concave.
6, attached lifting scaffold trolley type inclining-proof device according to claim 4 is characterized in that: described i iron is No. 10 i iron.
7, attached lifting scaffold trolley type inclining-proof device according to claim 5 is characterized in that: described channel-section steel is No. 63 channel-section steels.
8, attached lifting scaffold trolley type inclining-proof device according to claim 5, it is characterized in that: the fall prevention components of described inclining-proof device successively is laid on the body of wall of the vertical floor of striding of attached lift scaffold, and quantity is that the number of plies of the vertical floor of striding of attached lift scaffold subtracts one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200520538U CN201148725Y (en) | 2008-01-10 | 2008-01-10 | Trolley type inclining-proof device adhering to elevating scaffold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200520538U CN201148725Y (en) | 2008-01-10 | 2008-01-10 | Trolley type inclining-proof device adhering to elevating scaffold |
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| CN201148725Y true CN201148725Y (en) | 2008-11-12 |
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| CNU2008200520538U Expired - Lifetime CN201148725Y (en) | 2008-01-10 | 2008-01-10 | Trolley type inclining-proof device adhering to elevating scaffold |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101982633A (en) * | 2010-11-08 | 2011-03-02 | 四川华山建筑有限公司 | Layer stopping structure of attachment lifting scaffold |
| CN109296190A (en) * | 2018-09-26 | 2019-02-01 | 中交武汉港湾工程设计研究院有限公司 | A kind of climbing device of head tower operation platform |
| CN109296191A (en) * | 2018-09-26 | 2019-02-01 | 中交武汉港湾工程设计研究院有限公司 | A kind of automatic climbing platform for head tower construction |
| CN110777666A (en) * | 2019-11-12 | 2020-02-11 | 广州市第一市政工程有限公司 | Steel box girder construction platform and use method |
-
2008
- 2008-01-10 CN CNU2008200520538U patent/CN201148725Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101982633A (en) * | 2010-11-08 | 2011-03-02 | 四川华山建筑有限公司 | Layer stopping structure of attachment lifting scaffold |
| CN109296190A (en) * | 2018-09-26 | 2019-02-01 | 中交武汉港湾工程设计研究院有限公司 | A kind of climbing device of head tower operation platform |
| CN109296191A (en) * | 2018-09-26 | 2019-02-01 | 中交武汉港湾工程设计研究院有限公司 | A kind of automatic climbing platform for head tower construction |
| CN110777666A (en) * | 2019-11-12 | 2020-02-11 | 广州市第一市政工程有限公司 | Steel box girder construction platform and use method |
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20081112 |
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| CX01 | Expiry of patent term |