CN104612060B - Construction working stand under prefabricated side bar lateral roof - Google Patents
Construction working stand under prefabricated side bar lateral roof Download PDFInfo
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- CN104612060B CN104612060B CN201510066702.4A CN201510066702A CN104612060B CN 104612060 B CN104612060 B CN 104612060B CN 201510066702 A CN201510066702 A CN 201510066702A CN 104612060 B CN104612060 B CN 104612060B
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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Abstract
Description
技术领域：Technical field:
本发明涉及一种预制边梁外侧顶板下施工工作台架，适用于预制梁边梁外侧顶板下桥梁施工。The invention relates to a construction workbench under the outer roof of a prefabricated side beam, which is suitable for bridge construction under the outer roof of a prefabricated side beam.
背景技术：Background technique:
先简支后连续梁施工方法简单、质量可靠，实现了桥梁施工的工厂化、标准化和装配化。通过墩顶混凝土现浇后施加预应力，用简支梁的施工工艺，达到连续梁的施工目的。但梁顶板下预应力工程施工普遍为高空作业，特别是边梁外侧预应力施工，现有工作平台普遍存在安全性差、不宜就位等问题。The construction method of simply supported first and then continuous beam is simple, reliable in quality, and realizes factory, standardization and assembly of bridge construction. The construction purpose of the continuous beam is achieved by applying the prestress after the concrete on the top of the pier is cast, and using the construction technology of the simply supported beam. However, the construction of the prestressing engineering under the beam roof is generally a high-altitude operation, especially the prestressing construction outside the side beam. The existing working platforms generally have problems such as poor safety and unsuitable positioning.
发明内容：Invention content:
为克服现有技术的缺陷，本发明的目的在于提供一种安全可靠、易就位、操作性强的顶板下施工工作台架。In order to overcome the defects of the prior art, the object of the present invention is to provide a safe, reliable, easy-to-place, and highly operable construction workbench under the roof.
本发明解决技术问题采用如下技术方案：The present invention solves technical problem and adopts following technical scheme:
预制边梁外侧顶板下施工工作台架：Construction workbench under the outer roof of prefabricated side beams:
设置吊篮式工作平台、总体呈L形的可翻转主架，所述可翻转主架的水平段设于T形预制边梁的顶面，并且水平段的长度方向平行于T形预制边梁的宽度方向；可翻转主架的竖直段的底部与所述工作平台固联；Set up a hanging basket-type working platform and an overall L-shaped reversible main frame. The horizontal section of the reversible main frame is set on the top surface of the T-shaped prefabricated side beam, and the length direction of the horizontal section is parallel to the T-shaped prefabricated side beam. The width direction; the bottom of the vertical section of the reversible main frame is fixedly connected with the working platform;
在所述L形的可翻转主架的折弯部固设有向上倾斜的转角架，并在所述转角架的前端设有定滑轮；An upwardly inclined corner frame is fixed at the bending part of the L-shaped reversible main frame, and a fixed pulley is provided at the front end of the corner frame;
设置爬梯，所述爬梯的底部固联于所述工作平台上，爬梯顶部固联于所述L形的可翻转主架的折弯部；A ladder is provided, the bottom of the ladder is fixedly connected to the working platform, and the top of the ladder is fixedly connected to the bending part of the L-shaped reversible main frame;
设置锁定架，所述锁定架的一端固定于所述T形预制边梁的顶板内侧边缘，锁定架的另一端与所述可翻转主架的水平段铰接；A locking frame is provided, one end of the locking frame is fixed to the inner edge of the top plate of the T-shaped prefabricated side beam, and the other end of the locking frame is hinged to the horizontal section of the reversible main frame;
在所述锁定架上设有机架，卷扬设备固定于所述机架上。A frame is arranged on the locking frame, and the hoisting equipment is fixed on the frame.
所述可翻转主架由两根平行的L形骨架构成，两根骨架之间的间距为1.2米，并在两根骨架之间固联有至少一根连接件使两根骨架成为一体，两根L形骨架的竖直段的底部与所述工作平台固联，两根L形骨架的水平段的前端与所述锁定架铰接。The reversible main frame is composed of two parallel L-shaped frames, the distance between the two frames is 1.2 meters, and at least one connecting piece is fixedly connected between the two frames to make the two frames into one. The bottom of the vertical section of one L-shaped frame is fixedly connected with the working platform, and the front ends of the horizontal sections of the two L-shaped frames are hinged with the locking frame.
所述工作平台的底板由满足刚度、强度的轻质钢材焊制，工作平台分为供预应力施工人员操作的内平台和供人员、设备上下传送的外平台；内外平台的四周焊接有刚性防护围栏。The bottom plate of the working platform is welded by light steel that meets the rigidity and strength. The working platform is divided into an inner platform for prestressed construction personnel to operate and an outer platform for personnel and equipment to be transported up and down; the inner and outer platforms are welded around the rigid protection fence.
所述爬梯由两根平行的立杆和焊接在两根立杆之间的多根横杆构成，并在两根立杆上自上而下焊接有多个弧形的防护罩，所述防护罩上设置有密目网。The ladder is composed of two parallel poles and a plurality of cross bars welded between the two poles, and a plurality of arc-shaped protective covers are welded from top to bottom on the two vertical poles. Set with dense mesh.
所述转角架与所述可翻转主架的水平段呈135°夹角。The angle between the corner frame and the horizontal section of the reversible main frame is 135°.
两根L形骨架的水平段的前端各自设有两个销孔，两个骨架对应销孔的轴线连线平行于T形预制边梁的长度方向；所述锁定架由两根平行的槽钢构成，两根槽钢朝向L形骨架的一端各自设有两个销孔，锁定架与两根L形骨架的水平段之间通过插入在一对销孔内的销轴铰接，并可通过插入在另一对销孔内的锁定销锁定。The front ends of the horizontal sections of the two L-shaped skeletons are respectively provided with two pin holes, and the axis lines corresponding to the pin holes of the two skeletons are parallel to the length direction of the T-shaped prefabricated side beams; the locking frame is composed of two parallel channel steel Composition, two channel steels facing one end of the L-shaped skeleton are provided with two pin holes respectively, the locking frame and the horizontal section of the two L-shaped skeletons are hinged by pin shafts inserted in a pair of pin holes, and can be inserted through A locking pin in the other pair of pin holes locks.
与已有技术相比，本发明的有益效果体现在：Compared with the prior art, the beneficial effects of the present invention are reflected in:
在T形预制边梁制作完成后，需要对T形预制边梁的外侧面进行进一步的施工，采用本发明的工作台架，工作平台的内平台可作为施工人员操作平台，外平台可作为人员、设备上下传送平台，方便T形预制边梁外侧顶板下的施工。由于T形预制边梁的顶面沿长度方向需要对多处进行施工，因此在施工完一处后，需要将工作台架沿T形预制边梁的长度方向进行搬移，但因为T形预制边梁的外侧设有预埋钢筋，因此无法将工作台架推移，本发明工作台架的可翻转主架与锁定架之间为铰接连接，利用卷扬设备能够将可翻转主架翻转至T形预制边梁的顶面(工作平台也同时翻转上来)，再将承载卷扬设备的机架底部的万向轮升起，即可推动锁定架、可翻转主架以及工作平台沿T形预制边梁的长度方向移动，进行下一处的施工。After the T-shaped prefabricated side beams are manufactured, further construction needs to be carried out on the outer side of the T-shaped prefabricated side beams. With the working platform of the present invention, the inner platform of the working platform can be used as an operating platform for construction personnel, and the outer platform can be used as a construction personnel's operating platform. , The upper and lower transmission platforms of the equipment facilitate the construction under the outer roof of the T-shaped prefabricated side beams. Since the top surface of the T-shaped prefabricated side beam needs to be constructed in multiple places along the length direction, after the construction of one place, the workbench needs to be moved along the length direction of the T-shaped prefabricated side beam, but because the T-shaped prefabricated side beam The outer side of the beam is provided with pre-embedded steel bars, so the workbench cannot be moved. The reversible main frame of the workbench and the locking frame of the present invention are hingedly connected, and the reversible main frame can be turned into a T shape by using hoisting equipment. The top surface of the prefabricated side beam (the working platform is also turned up at the same time), and then the universal wheel at the bottom of the frame carrying the hoisting equipment is raised to push the locking frame, the reversible main frame and the working platform along the T-shaped prefabricated side. The length direction of the beam is moved, and the construction of the next place is carried out.
附图说明：Description of drawings:
图1为本发明的一侧结构示意图；图2为本发明的另一侧结构示意图；图3为本发明的仰视示意图；图4为本发明的侧视图。Fig. 1 is a schematic view of the structure of one side of the present invention; Fig. 2 is a schematic view of the structure of the other side of the present invention; Fig. 3 is a schematic bottom view of the present invention; Fig. 4 is a side view of the present invention.
图中标号：1工作平台，11内平台，12外平台，2爬梯，3可翻转主架，31水平段，32竖直段，4为T形预制边梁，5转角架，6锁定架，7机架，8卷扬设备，9钢丝绳。Numbers in the figure: 1 working platform, 11 inner platform, 12 outer platform, 2 ladder, 3 reversible main frame, 31 horizontal section, 32 vertical section, 4 is T-shaped prefabricated edge beam, 5 corner frame, 6 locking frame, 7 racks, 8 hoisting equipment, 9 wire ropes.
以下通过具体实施方式，并结合附图对本发明作进一步说明。The present invention will be further described below through specific embodiments and in conjunction with the accompanying drawings.
具体实施方式：detailed description:
实施例：结合附图，本实施例以T形预制边梁为例，当然，本发明装置也可应用于箱梁的边梁上施工，不限于T形梁边梁。Embodiment: With reference to the accompanying drawings, this embodiment takes T-shaped prefabricated side beams as an example. Of course, the device of the present invention can also be applied to the construction of side beams of box girders, not limited to T-shaped beams.
本发明的预制边梁外侧顶板下施工工作台架，其结构特征如下：The construction workbench under the outer roof of the prefabricated edge beam of the present invention has the following structural features:
设置吊篮式工作平台1、以及总体呈L形的可翻转主架3，可翻转主架的水平段31设于T形预制边梁4的顶面，并且水平段31的长度方向平行于T形预制边梁的宽度方向；可翻转主架的竖直段32的底部与工作平台1固联；在L形的可翻转主架3的折弯部固设有向上倾斜的转角架5，并在转角架的前端设有定滑轮；具体设置中，可翻转主架3由两根平行的L形骨架构成，两根骨架之间的间距为1.2米，并在两根骨架之间固联有至少一根连接件使两根骨架成为一体，两根L形骨架的竖直段的底部与工作平台1固联，两根L形骨架的水平段的前端与锁定架铰接。Set up a hanging basket type working platform 1 and an overall L-shaped reversible main frame 3. The horizontal section 31 of the reversible main frame is arranged on the top surface of the T-shaped prefabricated side beam 4, and the length direction of the horizontal section 31 is parallel to the T The width direction of the prefabricated edge beam; the bottom of the vertical section 32 of the reversible main frame is fixedly connected with the working platform 1; the bending part of the L-shaped reversible main frame 3 is fixed with an upwardly inclined corner frame 5, and The front end of the corner frame is provided with a fixed pulley; in the specific setting, the reversible main frame 3 is composed of two parallel L-shaped skeletons, the distance between the two skeletons is 1.2 meters, and there is a fixed connection between the two skeletons. At least one connecting piece makes the two frameworks into one, the bottoms of the vertical sections of the two L-shaped frameworks are fixedly connected with the working platform 1, and the front ends of the horizontal sections of the two L-shaped frameworks are hinged with the locking frame.
在工作平台1上设置有爬梯2，爬梯的底部固联于工作平台上，爬梯顶部固联于L形的可翻转主架的折弯部(即两根L形骨架的连接件)；具体设置中，爬梯2由两根平行的立杆和焊接在两根立杆之间的多根横杆构成，并在两根立杆上自上而下焊接有多个弧形的防护罩，在防护罩上设置有密目网，防止工作人员从爬梯上跌落。A ladder 2 is provided on the working platform 1, the bottom of the ladder is fixedly connected to the working platform, and the top of the ladder is fixedly connected to the bending part of the L-shaped reversible main frame (that is, the connecting piece of two L-shaped skeletons); the specific setting Among them, the ladder 2 is composed of two parallel poles and a plurality of cross bars welded between the two poles, and a plurality of arc-shaped protective covers are welded from top to bottom on the two vertical poles. A dense mesh is provided to prevent the staff from falling from the ladder.
图3所示，锁定架6的一端固定于T形预制边梁4的顶板内侧边缘(远离爬梯的一侧)，锁定架的另一端与可翻转主架的水平段铰接；具体设置中，锁定架也是由两根平行的骨架构成，骨架的一端设为U形的弯钩状，勾住在T形预制边梁的顶板内侧边缘，两根骨架之间固定连接有机架7，卷扬设备8固定于机架7上，并在机架的底部设有可升降的万向轮。As shown in Figure 3, one end of the locking frame 6 is fixed on the top plate inner edge of the T-shaped prefabricated side beam 4 (the side away from the ladder), and the other end of the locking frame is hinged with the horizontal section of the reversible main frame; The frame is also composed of two parallel skeletons. One end of the skeleton is set as a U-shaped hook, hooked on the inner edge of the top plate of the T-shaped prefabricated side beam, and the frame 7 is fixedly connected between the two skeletons. The hoisting equipment 8 is fixed on the frame 7, and the bottom of the frame is provided with liftable universal wheels.
工作平台1的底板由满足刚度、强度的轻质钢材焊制，工作平台分为供施工人员操作的内平台11和供人员、设备上下传送的外平台12；内外平台的四周焊接有刚性防护围栏。The bottom plate of the working platform 1 is welded by light steel that meets the rigidity and strength. The working platform is divided into an inner platform 11 for construction personnel to operate and an outer platform 12 for personnel and equipment to be transported up and down; rigid protective fences are welded around the inner and outer platforms .
转角架5固定连接在可翻转主架3的弯折部，并且转角架与可翻转主架3的水平段31呈135°夹角，即转角架向可翻转主架的水平段的斜上方伸出，定滑轮安装在转角架上，方便卷扬设备驱动的钢丝绳吊取设备。The corner frame 5 is fixedly connected to the bending part of the reversible main frame 3, and the angle between the corner frame and the horizontal section 31 of the reversible main frame 3 is 135°, that is, the corner frame extends obliquely upward to the horizontal section of the reversible main frame. Out, the fixed pulley is installed on the corner frame, which is convenient for the wire rope hoisting equipment driven by the hoisting equipment.
可翻转主架与锁定架的铰接形式如下：可翻转主架两根L形骨架的水平段的前端各自设有两个销孔，两个骨架对应销孔的轴线连线平行于T形预制边梁的长度方向；锁定架6由两根平行的槽钢构成，两根槽钢朝向L形骨架的一端各自设有两个销孔，锁定架与两根L形骨架的水平段之间通过插入在一对销孔内的销轴铰接，并可通过插入在另一对销孔内的锁定销锁定。The hinged form of the reversible main frame and the locking frame is as follows: the front ends of the horizontal sections of the two L-shaped skeletons of the reversible main frame are respectively provided with two pin holes, and the axes connecting the corresponding pin holes of the two skeletons are parallel to the T-shaped prefabricated side The length direction of the beam; the locking frame 6 is composed of two parallel channel steels, and the two channel steels are respectively provided with two pin holes facing one end of the L-shaped skeleton, and the locking frame and the horizontal sections of the two L-shaped skeletons are inserted through The pin shafts in one pair of pin holes are hinged and can be locked by a locking pin inserted in the other pair of pin holes.
工作中，施工人员在操作平台的内平台11上对T形预制边梁的外侧部进行施工，外平台12作为人员、设备上下传送平台，便于在T形预制边梁的顶板下进行施工，人员上下通过爬梯2完成，设备起吊由卷扬设备8带动钢丝绳9完成，转角架5上的定滑轮为钢丝绳的支撑点。当施工完一处后，拔出可翻转主架3水平段31与锁定架6之间的锁定销，将钢丝绳9的一端固定在转角架5上或工作平台上，启动卷扬设备8，钢丝绳9带动可翻转主架3绕水平段31与锁定架6之间的铰接点(销轴)向上翻转，将可翻转主架3(连同工作平台、爬梯)翻转至T形预制边梁的顶面上(目的是避开T形预制边梁顶板外侧向上伸出的预埋钢筋)，再升起机架7底部的万向轮，即可将整个施工工作台架推动至另一位置，工作台架到位后，施工人员抬起可翻转支架3绕销轴翻转，钢丝绳起制动作用，缓慢地将可翻转主架3(连同爬梯和工作平台)下放至T形预制边梁顶板的下部，插上锁定销即可再次施工。During work, construction workers construct the outer side of the T-shaped prefabricated edge beam on the inner platform 11 of the operating platform, and the outer platform 12 is used as a platform for personnel and equipment to be transported up and down, which is convenient for construction under the roof of the T-shaped prefabricated edge beam. Up and down is completed by climbing ladder 2, and equipment hoisting is completed by hoisting equipment 8 to drive wire rope 9, and the fixed pulley on the corner frame 5 is the supporting point of wire rope. After one place has been constructed, pull out the locking pin between the horizontal section 31 of the reversible main frame 3 and the locking frame 6, fix one end of the steel wire rope 9 on the corner frame 5 or on the working platform, start the hoisting device 8, wire rope 9 Drive the reversible main frame 3 to turn upward around the hinge point (pin shaft) between the horizontal section 31 and the locking frame 6, and turn the reversible main frame 3 (together with the working platform and ladder) to the top surface of the T-shaped prefabricated side beam (the purpose is to avoid the pre-embedded steel bars protruding upward from the outside of the top plate of the T-shaped prefabricated side beam), and then raise the universal wheel at the bottom of the frame 7 to push the entire construction workbench to another position. After the frame is in place, the construction workers lift the reversible support 3 and turn it around the pin shaft. The steel wire rope acts as a brake, and slowly lowers the reversible main frame 3 (together with the ladder and the working platform) to the lower part of the top plate of the T-shaped prefabricated edge beam. The upper locking pin can be used for construction again.
采用本发明的工作台架，对边梁外侧施工安全可靠、易就位、操作性强。By adopting the working bench frame of the present invention, the construction on the outer side of the side beam is safe and reliable, easy to put in place, and has strong operability.
Claims (4)
- Construction working stand under the most prefabricated side bar lateral roof, it is characterised in that:Basket-hanging work platforms (1), the most L-shaped turning body frame (3), the horizontal segment of described turning body frame are set (31) it is located at the end face of the prefabricated side bar of T-shaped (4), and the length direction of horizontal segment (31) is parallel to the prefabricated limit of T-shaped The width of beam；The bottom of the vertical section (32) of turning body frame connects firmly with described work platforms (1)；Bending part at the turning body frame (3) of described L-shaped is installed with acclivitous corner rack (5), and at described turn The front end of corner bracket is provided with fixed pulley；Arranging cat ladder (2), the bottom of described cat ladder is fixed on described work platforms, and cat ladder top is fixed on described L-shaped The bending part of turning body frame；Arranging lock bracket (6), the top board inside edge of the prefabricated side bar of described T-shaped (4) is fixed in one end of described lock bracket, The other end of lock bracket is hinged with the horizontal segment of described turning body frame；Being provided with frame (7) in described lock bracket, hoisting equipment (8) is fixed in described frame (7)；Described turning body frame (3) is made up of two parallel L-shaped skeletons, and the spacing between two skeletons is 1.2 meters, and Being fixedly connected with at least connector between two skeletons makes two skeletons be integrally forming, the end of the vertical section of two L-shaped skeletons Portion connects firmly with described work platforms (1), and the front end of the horizontal segment of two L-shaped skeletons is hinged with described lock bracket；The front end of the horizontal segment of two L-shaped skeletons is each provided with two pin-and-holes, and the axis line of two skeleton respective pin hole is parallel Length direction in the prefabricated side bar of T-shaped；Described lock bracket (6) is made up of two parallel channel-section steels, and two channel-section steels are towards L One end of shape skeleton is each provided with two pin-and-holes, by being inserted in pair of pin between the horizontal segment of lock bracket and two L-shaped skeletons Hinge in hole, and by being inserted in another, stop pin in pin-and-hole can be locked.
- Construction working stand under prefabricated side bar lateral roof the most according to claim 1, it is characterised in that: described work The base plate of platform (1) by meeting rigidity, the lightweight steel of intensity are welded, it is interior flat that work platforms is divided into for workmen's operation Platform (11) and the outer platform (12) transmitted up and down for personnel, equipment；The surrounding of interior outer platform is welded with rigid protection fence.
- Construction working stand under prefabricated side bar lateral roof the most according to claim 1, it is characterised in that: described cat ladder (2) it is made up of two parallel vertical rods and the many cross bars being welded between two vertical rods, and in two vertical rods from top to bottom It is welded with the protective cover of multiple arc, described protective cover is provided with Dense mesh screen.
- Construction working stand under prefabricated side bar lateral roof the most according to claim 1, it is characterised in that: described corner The horizontal segment (31) of frame (5) and described turning body frame (3) is in 135 ° of angles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510066702.4A CN104612060B (en) | 2015-02-09 | 2015-02-09 | Construction working stand under prefabricated side bar lateral roof |
Applications Claiming Priority (1)
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| CN104612060B true CN104612060B (en) | 2016-08-24 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106545150A (en) * | 2016-11-09 | 2017-03-29 | 中交路桥华东工程有限公司 | A kind of cantilevered operation platform |
| CN111622115A (en) * | 2020-05-18 | 2020-09-04 | 李涛 | Efficient bridge engineering construction platform |
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| CN2255468Y (en) * | 1996-05-23 | 1997-06-04 | 余鹏 | External hanging basket for building construction |
| CN203200655U (en) * | 2013-03-22 | 2013-09-18 | 武汉二航路桥特种工程有限责任公司 | Bridge construction auxiliary hanging basket convenient and fast to use |
| CN203559573U (en) * | 2013-10-23 | 2014-04-23 | 无锡吊蓝机械制造有限公司 | Foldable suspension of suspended platform |
| CN203961243U (en) * | 2014-04-29 | 2014-11-26 | 武汉一冶建筑安装工程有限责任公司 | Automatic control moving nacelle device |
| CN203998713U (en) * | 2014-08-12 | 2014-12-10 | 刁占峰 | A kind of gig and elevator system |
| CN204024005U (en) * | 2014-07-11 | 2014-12-17 | 中建安装工程有限公司 | Assembly type suspension platform |
| CN204125842U (en) * | 2014-09-09 | 2015-01-28 | 中交第一公路工程局有限公司总承包经营分公司 | The jointing of case beam breast board is constructed removable Hanging Basket Mobile workbench |
| CN204455839U (en) * | 2015-02-09 | 2015-07-08 | 安徽省路桥工程集团有限责任公司 | Construction working stand under prefabricated side bar lateral roof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090183947A1 (en) * | 2008-01-17 | 2009-07-23 | Stacey Leigh Hudgens-Wallace | Portable scaffolding device |
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| CN2255468Y (en) * | 1996-05-23 | 1997-06-04 | 余鹏 | External hanging basket for building construction |
| CN203200655U (en) * | 2013-03-22 | 2013-09-18 | 武汉二航路桥特种工程有限责任公司 | Bridge construction auxiliary hanging basket convenient and fast to use |
| CN203559573U (en) * | 2013-10-23 | 2014-04-23 | 无锡吊蓝机械制造有限公司 | Foldable suspension of suspended platform |
| CN203961243U (en) * | 2014-04-29 | 2014-11-26 | 武汉一冶建筑安装工程有限责任公司 | Automatic control moving nacelle device |
| CN204024005U (en) * | 2014-07-11 | 2014-12-17 | 中建安装工程有限公司 | Assembly type suspension platform |
| CN203998713U (en) * | 2014-08-12 | 2014-12-10 | 刁占峰 | A kind of gig and elevator system |
| CN204125842U (en) * | 2014-09-09 | 2015-01-28 | 中交第一公路工程局有限公司总承包经营分公司 | The jointing of case beam breast board is constructed removable Hanging Basket Mobile workbench |
| CN204455839U (en) * | 2015-02-09 | 2015-07-08 | 安徽省路桥工程集团有限责任公司 | Construction working stand under prefabricated side bar lateral roof |
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| CN104612060A (en) | 2015-05-13 |
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