CN101664963A - Multifunctional operating platform for large-volume prestressed concrete box girder tensioning - Google Patents
Multifunctional operating platform for large-volume prestressed concrete box girder tensioning Download PDFInfo
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- CN101664963A CN101664963A CN200910186023A CN200910186023A CN101664963A CN 101664963 A CN101664963 A CN 101664963A CN 200910186023 A CN200910186023 A CN 200910186023A CN 200910186023 A CN200910186023 A CN 200910186023A CN 101664963 A CN101664963 A CN 101664963A
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Abstract
The invention discloses a multifunctional operating platform for large-volume prestressed concrete box girder tensioning, which mainly consists of a main body structure, a hoisting system, a tensioning oil pump, a tensioning jack, a tool storage box, a safety protection system, a climbing ladder and an appurtenant structure. The main body structure is a framework structure which consists of five plane trusses and two vertical trusses, and the hoisting system consists of an electric hoist, a crane girder, a walking trolley and a track. The multifunctional operating platform mainly adopts the electric hoist for lifting the jack, and electrical equipment of the electric hoist can be precisely controlled, thereby being conductive to the mounting para-position operation of the tensioning jack and ensuring the safety of the construction. The multifunctional operating platform has the advantages of strong adaptation capability, simple construction, convenient operation and high operation efficiency while tensioning the box girders with a variety of cross sections, the maximum lifting capacity is 1t, the maximum lifting height is 3.5m (the distance from the operating surface to the centerof the jack), and the stability is high, so that the multifunctional operating platform can not only be applicable to tension the straight-web plate box girders, but also be used for prestressed-tensioning the variable cross-section inclined web plate box girders.
Description
Technical field
The present invention relates to the bridge construction equipment, especially relate to a kind of multifunctional operating platform for large-volume prestressed concrete box girder tensioning that is used for.
Background technology
Along with China's economy and fast development of society, each developed area, the whole nation, many over strait, stride Jiang Daqiao and put into operation in succession, this for large-volume prestressed concrete box girder whole opening prefabricated, transport and set up the condition created.In the beam prefabricated process of case, the Post-tension Prestress Construction working procedure that is absolutely necessary, box girder pre-stressed stretch-draw construction method commonly used now is to hang with loop wheel machine, small-sized gantry the large-tonnage jack is sling to answering Shu Duantou to carry out contraposition, stretch-draw in advance, perhaps set up simple support and manually jack is lifted by crane contraposition with bottle gouard moved by hands, carry out the problem that there is the following aspects in the prestressed stretch-draw operation with these methods: 1, the lifting driver with the confidential specialty of hoisting hook cooperates, and it is big to take up an area of the space, hinders other production processes.2, use gantry crane lifting that special track for the gantry crane walking will be arranged, construction cost increases.3, stretch-draw is bigger with jack weight, and is dangerous big in the operation of a dead lift jack.
Summary of the invention
The object of the present invention is to provide a kind of installation that helps ground tackle, jack the installation contraposition, can satisfy a plurality of working procedures and adaptive capacity is strong, construction is simple and direct, operating efficiency is high, danger is low multifunctional operating platform for large-volume prestressed concrete box girder tensioning.
The object of the present invention is achieved like this:
A kind of multifunctional operating platform for large-volume prestressed concrete box girder tensioning, feature are to comprise agent structure, Lift-on/Lift-off System, stretch-draw oil pump, stretch-draw jack, tool storage bin and cat ladder, wherein:
Agent structure is by five layer plane truss and two frame structures that vertical truss constitutes, on agent structure, be fixed with upper platform and the two-layer job platform of lower floor's platform, on lower floor's platform that second layer plane girder constitutes, put stretch-draw oil pump, stretch-draw jack and tool storage bin, operator is operated the stretch-draw oil pump and ground tackle is installed on lower floor's platform, on the 4th layer plane truss of agent structure, Lift-on/Lift-off System is installed, on the vertical truss outside on the agent structure left side, is fixed with cat ladder.
Agent structure is made of angle steel and channel-section steel welding.
Two-layer job platform is welded into plane girder, is constituted at its surface soldered steel plate by shaped steel, can satisfy the stretch-draw operation of differing heights prestressing tendon, promptly finish the stretch-draw of case beam base plate and web lower edge prestressing tendon, on the upper platform that the 3rd layer plane truss constitutes, finish the stretch-draw of case web upper limb prestressing tendon at lower floor's platform.
Tool storage bin is made up of two steel plate casees, is to be used for instruments such as interim store tools ground tackle and stretch-draw instrument.
Lift-on/Lift-off System is made of electric block, crane girder, walking dolly and track, welded top at the 4th layer plane truss has the track of being made by channel-section steel, the crane girder of being made by worker's steel that is welded with walking dolly is installed in orbit, and 1 ton of electric block is installed in the lower end of crane girder.Electric block is used for lifting jack, can realize the jack of some installation and contraposition arbitrarily in the scope of operation with electric block.
Cat ladder is mainly used to handled easily personnel stretch-draw operation and interim lifting hook.
The present invention also comprises safe-guard system and accessory structure, and the removable plank of installing on the removable plank track of safe-guard system by two vertical truss outsides in the back of rail constitutes; Accessory structure is made of power supply box, suspension centre and rainproof ceiling, and power supply box is fixed on the middle standing pillar, and suspension centre is welded on the middle standing pillar, and rainproof ceiling is made up of the color steel that is fixed on the layer 5 plane girder.
The thickness of slab of channel-section steel, I-steel, angle steel and steel plate is not less than 8mm.
Adaptive capacity is strong when the box girder tensioning of multiple cross section, construction is simple and direct, easy to operate, operating efficiency is high in the present invention, biggest lifting capacity 1T, maximum lifting height 3.5m (scope of operation is apart from the jack center), stability is high, the stretch-draw of straight web box girder can not only be adapted to, the prestressed stretch-draw of the oblique web box girder of variable cross-section can also be used for.Therefore, the present invention have the installation that helps ground tackle, jack the installation contraposition, can satisfy a plurality of working procedures and adaptive capacity is strong, construction is simple and direct, operating efficiency is high, danger is low advantage.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the structural representation of Lift-on/Lift-off System;
Fig. 4 is the left view of Fig. 3;
Fig. 5 is the vertical view of Fig. 1;
Fig. 6 be among Fig. 1 C-C to schematic diagram;
Fig. 7 be among Fig. 1 F-F to schematic diagram;
Fig. 8 be among Fig. 1 D-D to schematic diagram
Fig. 9 be among Fig. 1 E-E to schematic diagram.
The specific embodiment
Below in conjunction with example and contrast accompanying drawing the present invention is described in further detail.
A kind of multifunctional operating platform for large-volume prestressed concrete box girder tensioning comprises agent structure 2, Lift-on/Lift-off System 3, stretch-draw oil pump 9, stretch-draw jack 10, tool storage bin 13 and cat ladder 1, wherein:
Lift-on/Lift-off System 3 is made of electric block 17, crane girder 18, walking dolly 19 and track 15, welded top at the 4th layer plane truss 5 has the track of being made by channel-section steel 15, the crane girder of being made by worker's steel 18 that is welded with walking dolly 19 is installed on the track 15, and 1 ton of electric block 17 is installed in the lower end of crane girder 18.Electric block 17 is used for lifting stretch-draw jack 10, can realize stretch-draw jack 10 installation and the contrapositions of any arbitrarily in the scope of operation with electric block 17.
The present invention also comprises safe-guard system and accessory structure, and safe-guard system is made of the removable plank of installing on the removable plank track 16 in two vertical truss 8 outsides in the back 7 of rail; Accessory structure is made of power supply box 12, suspension centre 22 and rainproof ceiling 20, and power supply box 12 is fixed on the middle standing pillar 11, and suspension centre is welded on the middle standing pillar 11, and rainproof ceiling 20 is made up of the color steel that is fixed on the layer 5 plane girder 5.
The thickness of slab of channel-section steel, I-steel, angle steel and steel plate is not less than 8mm.
On layer 5 plane girder 5, be fixed with four suspension centres 22, and be that quadrangle diagonal line and the limit angulation that four suspension centres 22 constitute is 34.6 degree.
Operation principle: with electric block 17 stretch-draw jack 10 is lifted desired height earlier, finish the installation of instrument ground tackle, finish the stretch-draw operation of case beam again.Because the electrical equipment of electric block 17 can accurately be controlled, so can satisfy the stretch-draw operation of locus arbitrarily in the scope of operation.
Claims (8)
1, a kind of multifunctional operating platform for large-volume prestressed concrete box girder tensioning is characterized in that: comprise agent structure (2), Lift-on/Lift-off System (3), stretch-draw oil pump (9), stretch-draw jack (10), tool storage bin (13) and cat ladder (1), wherein:
Agent structure (2) is by five layer plane truss and two frame structures that vertical truss constitutes, on agent structure (2), be fixed with upper platform (6) and the two-layer job platform of lower floor's platform (14), on lower floor's platform (14) that second layer plane girder constitutes, put stretch-draw oil pump (9), stretch-draw jack (10) and tool storage bin (13), operator is gone up operation stretch-draw oil pump (9) and ground tackle is installed at lower floor's platform (14), on the 4th layer plane truss (5) of agent structure (2), Lift-on/Lift-off System (3) is installed, on vertical truss (8) outside on agent structure (2) left side, is fixed with cat ladder (1).
2, be used for multifunctional operating platform for large-volume prestressed concrete box girder tensioning as claimed in claim 1, it is characterized in that: Lift-on/Lift-off System (3) is made of electric block (17), crane girder (18), walking dolly (19) and track (15), welded top at the 4th layer plane truss (5) has the track of being made by channel-section steel (15), the crane girder of being made by worker's steel (18) that is welded with walking dolly (19) is installed on the track (15), in the lower end of crane girder (18) 1 ton of electric block (17) is installed.
3, be used for multifunctional operating platform for large-volume prestressed concrete box girder tensioning as claimed in claim 1, it is characterized in that: upper platform (6) and the two-layer job platform of lower floor's platform (14) are welded into plane girder, constitute at its surface soldered steel plate by shaped steel, can satisfy the stretch-draw operation of differing heights prestressing tendon, promptly finish the stretch-draw of case beam base plate and web lower edge prestressing tendon, on the upper platform (6) that the 3rd layer plane truss constitutes, finish the stretch-draw of case web upper limb prestressing tendon at lower floor's platform (14).
4, be used for multifunctional operating platform for large-volume prestressed concrete box girder tensioning as claimed in claim 1, it is characterized in that: tool storage bin (13) is made up of two steel plate casees.
5, be used for multifunctional operating platform for large-volume prestressed concrete box girder tensioning as claimed in claim 1, it is characterized in that: agent structure (2) is made of angle steel and channel-section steel welding.
6, be used for multifunctional operating platform for large-volume prestressed concrete box girder tensioning as claimed in claim 1, it is characterized in that: also comprise safe-guard system and accessory structure, safe-guard system is made of the removable plank of rail (7) of the last installation of removable plank track (16) in two vertical truss (8) outside in the back; Accessory structure is made of power supply box (12), suspension centre (22) and rainproof ceiling (20), power supply box (12) is fixed on the middle standing pillar (11), suspension centre is welded on the middle standing pillar (11), and rainproof ceiling (20) is made up of the color steel that is fixed on the layer 5 plane girder 5.
7, be used for multifunctional operating platform for large-volume prestressed concrete box girder tensioning as claimed in claim 5, it is characterized in that: on layer 5 plane girder (5), be fixed with four suspension centres (22), and be that quadrangle diagonal line and the limit angulation that four suspension centres (22) constitute is 34.6 degree.
8, be used for as claim 2 or 3 or 4 or 5 or described multifunctional operating platform for large-volume prestressed concrete box girder tensioning, it is characterized in that: the thickness of slab of channel-section steel, I-steel, angle steel and steel plate is not less than 8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101860235A CN101664963B (en) | 2009-09-11 | 2009-09-11 | Multifunctional operating platform for large-volume prestressed concrete box girder tensioning |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009101860235A CN101664963B (en) | 2009-09-11 | 2009-09-11 | Multifunctional operating platform for large-volume prestressed concrete box girder tensioning |
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| CN101664963A true CN101664963A (en) | 2010-03-10 |
| CN101664963B CN101664963B (en) | 2011-05-04 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105235064A (en) * | 2015-08-31 | 2016-01-13 | 中建市政工程有限公司 | Reinforcing bar banding stretching rack for pre-stressed concrete prefabricated box girder |
| CN106065709A (en) * | 2016-06-20 | 2016-11-02 | 中国十九冶集团有限公司 | prefabricated concrete beam operating platform |
| CN114030077A (en) * | 2021-11-15 | 2022-02-11 | 中国建筑土木建设有限公司 | Tensioning jack mounting equipment for beam field and prestressed cable tensioning method for precast beam |
-
2009
- 2009-09-11 CN CN2009101860235A patent/CN101664963B/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105235064A (en) * | 2015-08-31 | 2016-01-13 | 中建市政工程有限公司 | Reinforcing bar banding stretching rack for pre-stressed concrete prefabricated box girder |
| CN106065709A (en) * | 2016-06-20 | 2016-11-02 | 中国十九冶集团有限公司 | prefabricated concrete beam operating platform |
| CN106065709B (en) * | 2016-06-20 | 2018-11-30 | 中国十九冶集团有限公司 | Prefabricated concrete beam operating platform |
| CN114030077A (en) * | 2021-11-15 | 2022-02-11 | 中国建筑土木建设有限公司 | Tensioning jack mounting equipment for beam field and prestressed cable tensioning method for precast beam |
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| Publication number | Publication date |
|---|---|
| CN101664963B (en) | 2011-05-04 |
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