Anchor device is drawn for nose girder under Bridge Erector
Technical field
The utility model relates to Bridge Erector technical field, is specifically related to draw anchor device for nose girder under Bridge Erector.
Background technology
Bridge Erector is transported by prefabricated case beam in bridge engineering and is placed into the equipment on prefabricated bridge pier, applies to widely in current bridge construction.With regard to the structure of Bridge Erector, current Bridge Erector is mainly divided into integral type Bridge Erector, freely-supported purlin formula Bridge Erector, lower nose-girder bridging machine.Fortune frame is separated, fix a point lifting, light structure, safe and reliable feature wherein to descend nose-girder bridging machine to have, and obtains and uses widely.
Lower nose-girder bridging machine mainly includes girder, suspender, front leg strut, middle supporting leg, rear support leg, lower nose girder, in construction, after Bridge Erector is arranged and is put in place, suspender on girder is sling between pile equipment to bridge pier, after this pile equipment puts construction in place, girder along lower nose girder move to next across bridge pier on, after girder puts in place, lower nose girder is moved to by suspender on the bridge pier of next stage again again, and then play box beam by girder and install, repeat, until all case beams are mounted complete according to above-mentioned steps.
In above-mentioned steps, girder along lower nose girder move to next across bridge pier on, in engineering, be called bridge machine via hole, in concrete operations, inventor finds, because the weight of Bridge Erector own is extremely heavy, girder is under edge in nose girder sliding process, certain thrust can be imposed to lower nose girder, when thrust is excessive, lower nose girder will be shifted, and makes the supporting leg of nose girder under support from landing bridge pier, make the failure of bridge machine via hole, time serious, also can cause security incident.
So based on above-mentioned, at present, needing one badly in bridge machine via hole operation, can make lower nose girder fix, avoids lower nose girder from the fastening devices of landing bridge pier.
Utility model content
The purpose of this utility model is: for the problems referred to above existed in Bridge Erector construction, provide one in bridge machine via hole operation, lower nose girder can be fixed, avoid lower nose girder from the fastening devices of landing bridge pier.
To achieve these goals, the technical solution adopted in the utility model is:
Anchor device is drawn for nose girder under Bridge Erector, include anchoring piece body, described anchoring piece body includes the first anchoring part and the second anchoring part, described first anchoring part is arranged on mounted case beam, described second anchoring part is arranged on described lower nose girder, is provided with connector between described first anchoring part and described second anchoring part.Carrying out in bridge machine via hole operation, first the first anchoring part is fixedly installed on mounted case beam, second anchoring part is fixedly installed on lower nose girder, then the first anchoring part and the second anchoring part is connected by connector, when girder is under edge in nose girder sliding process, certain thrust can be imposed to lower nose girder, and anchoring piece body imposes pulling force to lower nose girder and offsets the thrust that girder imposes, and then lower nose girder is avoided from the landing bridge pier in bridge machine via hole operation.
As preferably, described first anchoring part includes screw mandrel, described screw mandrel lower end is positioned at the below of the top board of described case beam, the upper end of described screw mandrel is positioned at the top of described top board through described top board, the lower end of described screw mandrel is provided with the nut matched with described screw mandrel, be provided with cushion block between the downside of described nut and described top board, the upper end of described screw mandrel is provided with the first otic placode, and described connector is connected with described first otic placode and described second anchoring part.By arranging screw mandrel, screw mandrel, through the top board of case beam, makes to form firm connection between screw mandrel and case beam, arranges nut and cushion block, facilitate the installation and removal of screw mandrel in screw mandrel lower end, and avoids damaging case beam during installing/dismounting screw mandrel by cushion block.
As preferably, described second anchoring part includes the second otic placode, and described connector is connected with described first otic placode and the second otic placode.Connector is set between the first otic placode and the second otic placode, facilitates the installation and removal of connector.
As preferably, described connector is have flexible flexible connecting member, the adjustable length of described connector.Adopt flexible connector, after connecting the first anchoring part and the second anchoring part, then strain connector, facilitate the installation of connector.
As preferably, described connector is Chain block.Adopt Chain block as connector, in installation process, after Chain block connects the first anchoring part and the second anchoring part, making Chain block be tensioned state again, when removing, first making Chain block be relaxed state, and then remove, so, facilitate installation and removal.
As preferably, described in draw anchor device to include two cover anchoring piece bodies, two cover anchoring piece bodies are arranged symmetrically with along the central axis of the length direction of described lower nose girder.By two anchoring piece bodies, further ensure to draw anchor device to impose reliable pulling force to lower nose girder, avoid the landing of lower nose girder.
In sum, owing to have employed technique scheme, the beneficial effects of the utility model are:
Anchoring piece body imposes pulling force to lower nose girder and offsets the thrust that imposes of girder, makes to avoid lower nose girder from landing bridge pier in bridge machine via hole operation.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the top view of Fig. 1;
Fig. 3 is the partial enlarged drawing in Fig. 1,
Mark in figure: 1-anchoring piece body, 2-first anchoring part, 3-second anchoring part, 4-case beam, nose girder under 5-, 6-connector, 7-bridge pier, 21-screw mandrel, 22-nut, 23-cushion block, 24-first otic placode, 31-second otic placode.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in detail.
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
As shown in the figure draw anchor device for nose girder under Bridge Erector, include anchoring piece body 1, described anchoring piece body 1 includes the first anchoring part 2 and the second anchoring part 3, described first anchoring part 2 is arranged on mounted case beam 4, described second anchoring part 3 is arranged on described lower nose girder 5, is provided with connector 6 between described first anchoring part 2 and described second anchoring part 3.Carrying out in bridge machine via hole operation, first the first anchoring part 2 is fixedly installed on mounted case beam 4, second anchoring part 3 is fixedly installed on lower nose girder 5, then the first anchoring part 2 and the second anchoring part 3 is connected by connector 6, when girder is under edge in nose girder 5 sliding process, certain thrust can be imposed to lower nose girder 5, and anchoring piece body 1 imposes pulling force to lower nose girder 5 and offsets the thrust that girder imposes, and then lower nose girder 5 is avoided from the landing bridge pier 7 in bridge machine via hole operation.
As preferably, described first anchoring part 2 includes screw mandrel 21, described screw mandrel 21 lower end is positioned at the below of the top board of described case beam 4, the upper end of described screw mandrel 21 is positioned at the top of described top board through described top board, the lower end of described screw mandrel 21 is provided with the nut 22 matched with described screw mandrel 21, be provided with cushion block 23 between described nut 22 and the downside of described top board, the upper end of described screw mandrel 21 is provided with the first otic placode 24, and described connector 6 is connected with described first otic placode 24 and described second anchoring part 3.By arranging screw mandrel 21, screw mandrel 21, through the top board of case beam 4, makes to form firm connection between screw mandrel 21 and case beam 4, arranges nut 22 and cushion block 23 in screw mandrel 21 lower end, facilitate the installation and removal of screw mandrel 21, and avoid damaging case beam 4 during installing/dismounting screw mandrel 21 by cushion block 23.
As preferably, described second anchoring part 3 includes the second otic placode 31, and described connector 6 is connected with described first otic placode 24 and the second otic placode 31.Connector 6 is set between the first otic placode 24 and the second otic placode 31, facilitates the installation and removal of connector 6.
As preferably, described connector 6 is for having flexible flexible connecting member 6, the adjustable length of described connector 6.Adopt flexible connector 6, after connecting the first anchoring part 2 and the second anchoring part 3, then strain connector 6, facilitate the installation of connector 6.
As preferably, described connector 6 is Chain block.Adopt Chain block as connector 6, in installation process, after Chain block connects the first anchoring part 2 and the second anchoring part 3, making Chain block be tensioned state again, when removing, first making Chain block be relaxed state, and then remove, so, facilitate installation and removal.
As preferably, described in draw anchor device to include two cover anchoring piece bodies 1, two to overlap anchoring piece bodies 1 and be arranged symmetrically with along the central axis of the length direction of described lower nose girder 5.By two anchoring piece bodies 1, further ensure to draw anchor device to impose reliable pulling force to lower nose girder 5, avoid the landing of lower nose girder 5.
All do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.