CN106835993B - Mobile formwork front leg strut pedestal - Google Patents
Mobile formwork front leg strut pedestal Download PDFInfo
- Publication number
- CN106835993B CN106835993B CN201710130748.7A CN201710130748A CN106835993B CN 106835993 B CN106835993 B CN 106835993B CN 201710130748 A CN201710130748 A CN 201710130748A CN 106835993 B CN106835993 B CN 106835993B
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- CN
- China
- Prior art keywords
- front leg
- leg strut
- box
- bolt
- convex surface
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- 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.)
- Expired - Fee Related
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Classifications
-
- 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
Abstract
The invention discloses a kind of mobile formwork front leg strut pedestals, including support underframe, length adjustment mechanism and front leg strut fastening system, the support underframe is box shape steel structure, its upside is connected with front leg strut column lower end using bolt, box shape steel structure two sides are symmetrical arranged box cantilever, box cantilever is equipped with the front leg strut fastening system for connecting bridge pier built-in fitting, and fixed setting is used to support the length adjustment mechanism on bridge pier in the box shape steel structure central cavity；The function of not only realizing the uniform bearing capacity of front leg strut, avoid unbalance loading, and realize the function that the left and right leg length of front leg strut independently adjusts, and have the function of preventing front leg strut fulcrum all around play and disengaging bridge pier, to improve the safety of Construction Through Form on Traveler.
Description
Technical field
The present invention relates to construction of railways technical field of auxiliary equipment more particularly to a kind of mobile formwork front leg strut pedestals.
Background technique
Mobile formwork is the construction equipment that hole-specifically cast-in-site is carried out to beams of concrete, including girder, front leg strut, after
The parts such as supporting leg and lower nose girder can once complete pouring for a bridge body concrete, and can vertically move along bridge axle line, mobile mould
More than 400 ton of frame weight, made more than 800 ton of beams of concrete weight.
Front leg strut is one of the supporting structure of mobile formwork main body, and lower end is supported on bridge pier platform.Bridge pier upper mounting plate
Out-of-flatness often lead to front leg strut present part carrying, to generate structure unbalance loading, influence the safety of mobile formwork operation；
Mobile formwork host via hole operation need to shrink front leg strut, host it is in place when need to extend front leg strut, and because two, bridge pier it is flat
The height of platform may be different, need two leg lengths in left and right that can independently adjust；The position of mobile formwork supporting leg, which determines, pours
Build the position of beams of concrete, it is therefore desirable to by fixed pivot on bridge pier, and need to play the role of preventing host from tumbling.Cause
This design it is a kind of with uniform load, adjustable-length, limit play front leg strut base mechanism, be that this field is urgently to be solved
Problem.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of mobile formwork front leg strut pedestals, not only realize that front leg strut is equal
Even bearing capacity, the function of avoiding unbalance loading, and realize the function that the left and right leg length of front leg strut independently adjusts, and have anti-
Only front leg strut fulcrum all around play and be detached from bridge pier function, to improve the safety of Construction Through Form on Traveler.
In order to solve the above technical problems, the technical solution adopted by the present invention is that：A kind of mobile formwork front leg strut pedestal, packet
Support underframe, length adjustment mechanism and front leg strut fastening system are included, the support underframe is box shape steel structure, upside and preceding branch
Leg column lower end is connected using bolt, and box shape steel structure two sides are symmetrical arranged box cantilever, and box cantilever is equipped with for connecting
The front leg strut fastening system of bridge pier built-in fitting, the interior fixed setting of the box shape steel structure central cavity are used to support on bridge pier
Length adjustment mechanism.
The box shape steel structure includes two sets of box beams installed side by side and top plate, and top plate is welded on two casing top surface of the beams,
The inner cavity for being used for installation length regulating mechanism is formed between two sets of box beams and top plate lower surface, front leg strut is bolted in top plate
Lower end, two sets of box cantilevers are respectively welded on two sets of box beam lateral surfaces.
The length adjustment mechanism includes adjusting sleeve, convex surface bolt, concave surface boots and caging bolt, the adjusting sleeve vertical
Into the inner cavity being fixed between two sets of box beams and its axis is overlapped with front leg strut center line, and it is trapezoidal to adjust hub internal bore setting
Internal screw thread, the convex surface bolt is the hollow columnar structures of lower end closed and its lower end is spherical crown surface, the cylinder of convex surface bolt
Trapezoidal external screw thread is arranged in part, and convex surface bolt is threadedly engaged with sleeve is adjusted, and concave surface boots, concave surface are installed in convex surface bolt lower end
Spherical groove for accommodating convex surface bolt spherical crown surface, the spherical groove bottom of concave surface boots and the ball of convex surface bolt are set in the middle part of boots
Crown apex opens up through-hole, and caging bolt penetrates the through-hole of spherical groove bottom and spherical crown surface apex from bottom to top, limit
Position bolt is located at the mating installation locking nut in one end on the inside of the bolt of convex surface.
Concave surface sole face be plane, convex surface bolt lower part set there are four run through its side wall adjustment hole.
The front leg strut fastening system includes two fining twisted steels being symmetrically mounted on two sets of box cantilevers, finish rolling spiral shell
Line steel upper end is passed through the vertical perforations being arranged on box cantilever and is fixedly connected by means of anchorage with box cantilever, finish rolling screw thread
Steel lower end also is provided with anchorage, and the anchorage of fining twisted steel lower end setting is for connecting the anchor pole upper end being embedded on bridge pier.
Generated beneficial effect is by adopting the above technical scheme：It is mutually matched by being arranged on front leg strut pedestal
Convex, recessed hemisphere meets the function of the ball dumpling of certain rotation angle, can be realized front leg strut on bridge pier fulcrum stress self
Adjustment reaches the control of supporting leg stress equalization；Using the matching mechanism for adjusting convex surface bolt and adjusting sleeve, before can not only realizing
Supporting leg stretches to contact or be detached from the function of bridge pier, and can be realized the independent of two leg lengths of front leg strut and adjust,
Front leg strut stress unbalance loading problem caused by avoiding because of position of the fulcrum out-of-flatness；Front leg strut support underframe is coupled using screw-thread steel anchorage
With the embedded anchor bar of bridge pier, front leg strut position of the fulcrum can not only be fixed to prevent its play all around, and can be prevented
Only front leg strut fulcrum is detached from bridge pier and the accident that causes mobile formwork to tumble.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention（Complete section）；
Fig. 2 is the top view of Fig. 1；
Fig. 3 is the structure half sectional view for adjusting sleeve；
Fig. 4 is the structure half sectional view of convex surface bolt；
Fig. 5 is the structure half sectional view of concave surface boots；
Wherein：1, support underframe；2, fining twisted steel；3, front leg strut column；4, sleeve is adjusted；5, convex surface bolt；6, thousand
Jin top；7, concave surface boots；8, bridge pier；9, caging bolt.
Specific embodiment
With reference to the attached drawing in the embodiment of the present invention, technical solution in the embodiment of the present invention carries out clear, complete
Ground description, it is clear that described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, but the present invention can be with
Implemented using other than the one described here other way, those skilled in the art can be without prejudice to intension of the present invention
In the case of do similar popularization, therefore the present invention is not limited by the specific embodiments disclosed below.
As Figure 1-Figure 2, the invention discloses a kind of mobile formwork front leg strut pedestals, including support underframe 1, length tune
Mechanism and front leg strut fastening system are saved, the support underframe 1 is box shape steel structure, and upside uses spiral shell with front leg strut column lower end
Bolt is connected, and box shape steel structure two sides are symmetrical arranged box cantilever, and box cantilever is equipped with the preceding branch for connecting bridge pier built-in fitting
Leg fastening system, the interior fixed setting of the box shape steel structure central cavity are used to support the length adjustment mechanism on bridge pier.
The box shape steel structure includes two sets of box beams installed side by side and top plate, and top plate is welded on two casing top surface of the beams,
The inner cavity for being used for installation length regulating mechanism is formed between two sets of box beams and top plate lower surface, front leg strut is bolted in top plate
Lower end, two sets of box cantilevers are respectively welded on two sets of box beam lateral surfaces.
The length adjustment mechanism includes adjusting sleeve 4（Referring to attached drawing 3）, convex surface bolt（Referring to attached drawing 4）, concave surface boots 7
（Referring to attached drawing 5）With caging bolt 9, the adjusting sleeve 4 vertically be fixed in the inner cavity between two sets of box beams and its axis with
Front leg strut center line is overlapped, and adjusts 4 inner hole of sleeve and trapezoidal internal thread is arranged, the convex surface bolt is the hollow circuit cylinder of lower end closed
Shape structure and its lower end are spherical crown surface, and trapezoidal external screw thread, convex surface bolt 5 and adjusting sleeve 4 is arranged in the column part of convex surface bolt
It is threadedly engaged, concave surface boots 7 are installed in 5 lower end of convex surface bolt, are arranged in the middle part of concave surface boots 7 for accommodating 5 spherical crown surface of convex surface bolt
Spherical groove, the spherical groove bottom of concave surface boots 7 and the spherical crown surface apex of convex surface bolt 5 open up through-hole, caging bolt 9
The through-hole of spherical groove bottom and spherical crown surface apex is penetrated from bottom to top, and caging bolt 9 is located at one end of 5 inside of convex surface bolt
Mating installation locking nut.
7 bottom surface of concave surface boots is plane, and 5 lower part of convex surface bolt sets there are four the adjustment hole for running through its side wall, adjusts
The effect of knothole is that penetrating spanner rotates convex surface bolt, the adjustment of front leg strut strut length is realized with this, and before left and right
Supporting leg can individually adjust.
The front leg strut fastening system includes two fining twisted steels 2 being symmetrically mounted on two sets of box cantilevers, finish rolling
2 upper end of screw-thread steel is passed through the vertical perforations being arranged on box cantilever and is fixedly connected by means of anchorage with box cantilever, finish rolling spiral shell
2 lower end of line steel also is provided with anchorage, and the anchorage of 2 lower end of fining twisted steel setting is for connecting the anchor pole upper end being embedded on bridge pier.
In the specific application process, the present invention by the concave, convex spherical support of convex surface bolt 5 and concave surface boots 7 act on it is micro-
Amount rotation, not only realizes the transmitting of front leg strut support force, but also eliminates the local pressure of supporting leg automatically, ensure that fulcrum stress
Safety；Under the assistance that jack 6 jacks support underframe, the adjustment hole on 5 side wall of convex surface bolt is penetrated using axis class tool, it can
Convex surface bolt 5 is rotated, 7 baseplane of concave surface boots coupled by bolt and nut can be detached from bridge pier by precession screw thread, and screwing out screw thread can
So that front leg strut is supported in bridge pier, need to guarantee that the bottom surface of concave surface boots 7 is steadily bonded with bridge pier top surface, and can independently adjust a front leg strut left side
Right two leg lengths, to meet construction site requirement, after-contraction jack so that base mechanism reaches loaded state；Work as bottom
After seat mechanism is in place, screw-thread steel anchorage 2 is penetrated from the vertical through hole of 1 two sides cantilever beam of support underframe, using anchorage top nut
And fining twisted steel upper end is installed on the upper position of 1 box cantilever of support underframe perforation by backing plate, it will using anchorage lower nut
Fining twisted steel lower end is connected with the anchor pole for being embedded in pier coping portion in advance, thus branch before preventing mobile formwork from occurring during beam processed
Leg fulcrum play on bridge pier platform, and limit front leg strut fulcrum and will not be detached from bridge pier in unexpected situations and cause mobile mould
The accident that frame is tumbled, it is ensured that construction safety.
Claims (3)
1. a kind of mobile formwork front leg strut pedestal, it is characterised in that：Including support underframe（1）, length adjustment mechanism and front leg strut
Fastening system, the support underframe（1）For box shape steel structure, upside is connected with front leg strut column lower end using bolt, box
Steel construction two sides are symmetrical arranged box cantilever, and box cantilever is equipped with the front leg strut fastening system for connecting bridge pier built-in fitting,
Fixed setting is used to support the length adjustment mechanism on bridge pier in the box shape steel structure central cavity；The box shape steel structure
The box beam and top plate installed side by side including two sets, top plate are welded on two casing top surface of the beams, two sets of box beams and top plate lower surface it
Between form the inner cavity for being used for installation length regulating mechanism, top plate is bolted front leg strut lower end, and two sets box cantilevers are distinguished
It is welded on two sets of box beam lateral surfaces；
The length adjustment mechanism includes adjusting sleeve（4）, convex surface bolt, concave surface boots（7）And caging bolt（9）, the adjusting
Sleeve（4）It is vertically fixed in the inner cavity between two sets of box beams and its axis is overlapped with front leg strut center line, adjust sleeve（4）
Trapezoidal internal thread is arranged in inner hole, and the convex surface bolt is the hollow columnar structures of lower end closed and its lower end is spherical crown surface, convex
Trapezoidal external screw thread, convex surface bolt is arranged in the column part of face bolt（5）With adjusting sleeve（4）It is threadedly engaged, the convex surface bolt
（5）Lower end is installed by concave surface boots（7）, concave surface boots（7）Middle part is arranged for accommodating convex surface bolt（5）The spherical groove of spherical crown surface, it is recessed
Face boots（7）Spherical groove bottom and convex surface bolt（5）Spherical crown surface apex open up through-hole, caging bolt（9）From lower and
On penetrate the through-hole of spherical groove bottom and spherical crown surface apex, caging bolt（9）Positioned at convex surface bolt（5）Match one end of inside
Cover installation locking nut.
2. mobile formwork front leg strut pedestal according to claim 1, it is characterised in that：The concave surface boots（7）Bottom surface is flat
Face, the convex surface bolt（5）Lower part set there are four run through its side wall adjustment hole.
3. mobile formwork front leg strut pedestal according to claim 2, it is characterised in that：The front leg strut fastening system includes
Two fining twisted steels being symmetrically mounted on two sets of box cantilevers（2）, fining twisted steel（2）Upper end passes through to be set on box cantilever
It the vertical perforations set and is fixedly connected by means of anchorage with box cantilever, fining twisted steel（2）Lower end also is provided with anchorage, finish rolling
Screw-thread steel（2）The anchorage of lower end setting is for connecting the anchor pole upper end being embedded on bridge pier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710130748.7A CN106835993B (en) | 2017-03-07 | 2017-03-07 | Mobile formwork front leg strut pedestal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710130748.7A CN106835993B (en) | 2017-03-07 | 2017-03-07 | Mobile formwork front leg strut pedestal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106835993A CN106835993A (en) | 2017-06-13 |
| CN106835993B true CN106835993B (en) | 2018-11-27 |
Family
ID=59137475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710130748.7A Expired - Fee Related CN106835993B (en) | 2017-03-07 | 2017-03-07 | Mobile formwork front leg strut pedestal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106835993B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006214209A (en) * | 2005-02-04 | 2006-08-17 | Noda Jidosha Kogyosho:Kk | Method of erecting and removing bridge girder, and bridge girder construction apparatus |
| CN103015322A (en) * | 2012-12-17 | 2013-04-03 | 河北工业大学 | Device for adjusting and fixing heights of support legs of bridge erection machine |
| CN204435238U (en) * | 2015-01-30 | 2015-07-01 | 中铁二十三局集团第四工程有限公司 | For the braced structures of nose girder under Bridge Erector |
| JP2016180250A (en) * | 2015-03-24 | 2016-10-13 | 五洋建設株式会社 | Suspension frame and structure construction method using the same |
| CN106192772A (en) * | 2016-07-19 | 2016-12-07 | 中建五局土木工程有限公司 | Jack bascule and mobile formwork for mobile formwork |
| CN106400699A (en) * | 2016-12-01 | 2017-02-15 | 中铁工程机械研究设计院有限公司 | Front landing leg supporting device for improving stability of longitudinal-moving via-hole construction through bridge girder erection machine |
-
2017
- 2017-03-07 CN CN201710130748.7A patent/CN106835993B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006214209A (en) * | 2005-02-04 | 2006-08-17 | Noda Jidosha Kogyosho:Kk | Method of erecting and removing bridge girder, and bridge girder construction apparatus |
| CN103015322A (en) * | 2012-12-17 | 2013-04-03 | 河北工业大学 | Device for adjusting and fixing heights of support legs of bridge erection machine |
| CN204435238U (en) * | 2015-01-30 | 2015-07-01 | 中铁二十三局集团第四工程有限公司 | For the braced structures of nose girder under Bridge Erector |
| JP2016180250A (en) * | 2015-03-24 | 2016-10-13 | 五洋建設株式会社 | Suspension frame and structure construction method using the same |
| CN106192772A (en) * | 2016-07-19 | 2016-12-07 | 中建五局土木工程有限公司 | Jack bascule and mobile formwork for mobile formwork |
| CN106400699A (en) * | 2016-12-01 | 2017-02-15 | 中铁工程机械研究设计院有限公司 | Front landing leg supporting device for improving stability of longitudinal-moving via-hole construction through bridge girder erection machine |
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| Publication number | Publication date |
|---|---|
| CN106835993A (en) | 2017-06-13 |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181127 |