CN104631334B - The middle part bracing or strutting arrangement of large-tonnage Bridge Erector - Google Patents

The middle part bracing or strutting arrangement of large-tonnage Bridge Erector Download PDF

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Publication number
CN104631334B
CN104631334B CN201510059251.1A CN201510059251A CN104631334B CN 104631334 B CN104631334 B CN 104631334B CN 201510059251 A CN201510059251 A CN 201510059251A CN 104631334 B CN104631334 B CN 104631334B
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China
Prior art keywords
support
roller
leg strut
entablature
leg
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CN201510059251.1A
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Chinese (zh)
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CN104631334A (en
Inventor
宋鲁竞
吴国梅
吴耀辉
周治国
林建青
卫森
张俊艳
刘舒馨
宋飞
邱宸
吕亚平
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郑州新大方重工科技有限公司
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Priority to CN201410807316 priority Critical
Priority to CN2014108073161 priority
Application filed by 郑州新大方重工科技有限公司 filed Critical 郑州新大方重工科技有限公司
Priority to CN201510059251.1A priority patent/CN104631334B/en
Publication of CN104631334A publication Critical patent/CN104631334A/en
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Publication of CN104631334B publication Critical patent/CN104631334B/en

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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00Methods or apparatus specially adapted for erecting or assembling bridges
    • E01D21/06Methods or apparatus specially adapted for erecting or assembling bridges by translational movement of the bridge or bridge sections

Abstract

The middle part bracing or strutting arrangement of large-tonnage Bridge Erector, comprise front leg strut and the rear support leg that is positioned at front leg strut rear, front leg strut comprises front leg strut entablature, the left and right sides, front leg strut entablature bottom surface is rotatably connected to a support member by front hinge respectively, front leg strut entablature end face is respectively equipped with a front slideway of offering along left and right directions in the left and right sides, in front slideway, slidably connect front tray, front leg strut entablature is provided with the front traversing driving oil cylinder for driving front tray to slide along front slideway, and front tray is provided with front carrying roller supporting mechanism. The present invention both can meet setting up of camber beam, also can meet the special operation condition that double width case beam centre-to-centre spacing changes, and can meet again the utmost point special operation condition that a side bridge floor supports, a side bridge pier supports. Greatly expand the use face of Bridge Erector, can better meet the various demands of setting a roof beam in place, alleviated the overall weight of Bridge Erector simultaneously, saved manufacture and the cost of investment of equipment.

Description

The middle part bracing or strutting arrangement of large-tonnage Bridge Erector
Technical field
The invention belongs to technical field of bridge construction, be specifically related to a kind of middle part bracing or strutting arrangement of large-tonnage Bridge Erector.
Background technology
Along with the development of China's science and technology and capital construction, especially, in highway and high-speed railway construction construction, various new technologies, new equipment are widely used and promote, and have improved speed of application and the quality of railway and highway.
The middle part bracing or strutting arrangement of large-tonnage Bridge Erector comprises front leg strut and rear support leg, when the setting up of large-tonnage highway beam, the front leg strut of middle part bracing or strutting arrangement props up and stands on bridge pier, end front leg strut when setting a roof beam in place props up and stands on bridge surface, rear support leg props up all the time and stands on bridge face, just need to distribute the strong point of front leg strut to meet the designing requirement of crane ' s major girder. In addition, setting up camber beam or double width case beam centre-to-centre spacing while changing, just need the center to center distance between main girder of Bridge Erector to make corresponding change. These contents become one of difficult point of erecting beam construction above, are also the technical problems that the middle part bracing or strutting arrangement of existing Bridge Erector is needed solution badly.
Summary of the invention
The present invention is in order to solve weak point of the prior art, a kind of middle part bracing or strutting arrangement of large-tonnage Bridge Erector is provided, this device both can meet setting up of camber beam, also the special operation condition that double width case beam centre-to-centre spacing changes can be met, the utmost point special operation condition of a side supporting bridge, the support of opposite side bridge pier can be met again.
For solving the problems of the technologies described above, the present invention adopts following technical scheme: the middle part bracing or strutting arrangement of large-tonnage Bridge Erector, comprise front leg strut 1 and the rear support leg 2 that is positioned at front leg strut 1 rear, described front leg strut 1 comprises front leg strut entablature 3, front leg strut entablature 3 left and right sides, bottom surface are rotatably connected to a support member by front hinge 8 respectively, front leg strut entablature 3 end faces are respectively equipped with a front slideway 30 of offering along left and right directions in the left and right sides, in front slideway 30, slidably connect front tray 5, front leg strut entablature 3 is provided with the front traversing driving oil cylinder 7 for driving front tray 5 to slide along front slideway 30, front tray 5 is provided with front carrying roller supporting mechanism 6,
Described rear support leg 2 comprises rear entablature 11, rear entablature 11 left and right sides, bottom surface are rotatably connected to a horizontally disposed post-equalization beam 16 by rear hinge 15 respectively, post-equalization beam 16 two ends are respectively equipped with rear support bracket 12, the inner coaxial rear support oil cylinder 18 that is provided with of each rear support bracket 12, rear support oil cylinder 18 lower ends are provided with rear telescopic mast 19, the outer rear support anchor ear 17 that is arranged with of rear telescopic mast 19, rear entablature 11 end faces are respectively equipped with a rear slide 31 of offering along left and right directions in the left and right sides, in rear slide 31, slidably connect rear pallet 14, rear entablature 11 is provided with the rear traversing driving oil cylinder 13 for driving rear pallet 14 to slide along rear slide 31, rear pallet 14 is provided with rear carrying roller supporting mechanism 32,
Front carrying roller supporting mechanism 6 is identical with the structure of rear carrying roller supporting mechanism 32.
Described front carrying roller supporting mechanism 6 and rear carrying roller supporting mechanism 32 include left roller rack 25 and right roller rack 26, on left roller rack 25, be provided with four left carrier rollers 20 along fore-and-aft direction, left roller rack 25 right sides are provided with left side guide wheel 22, left roller rack 25 left sides are provided with left hook davit 21, left hook davit 21 upper ends are provided with left box body 23, left box body 23 is provided with left motor reducer 27, in left box body 23, be provided with the left hanging wheel 28 being in transmission connection with left motor reducer 27, left hanging wheel 28 is positioned at left side guide wheel 22 tops, right side, in the middle of left roller rack 25, be vertically provided with the left jacking cylinder 24 between middle two left carrier rollers 20,
On right roller rack 26, be provided with four right carrier rollers 29 along fore-and-aft direction, right roller rack 26 left sides are provided with right side guide wheel 33, right roller rack 26 right sides are provided with right hook davit 34, right hook davit 34 upper ends are provided with right case 35, right case 35 is provided with right motor reducer 36, in right case 35, be provided with the right hanging wheel 37 being in transmission connection with right motor reducer 36, right hanging wheel 37 is positioned at right side guide wheel 33 tops, left side, is vertically provided with the right jacking cylinder 38 between middle two right carrier rollers 29 in the middle of right roller rack 26;
Girder 39 bottoms of large-tonnage Bridge Erector are located between left box body 23 and right case 35, left roller rack 25 is provided with and contacts the left support backing plate 40 supporting with girder 39 bottom surfaces, right roller rack 26 is provided with and contacts the right support backing plate 41 supporting with girder 39 bottom surfaces, the foot on girder 39 left sides and right side along its length level is provided with left rail 42 and right guide rail 43, left side guide wheel 22 contacts with left rail 42 left surfaces, right side guide wheel 33 contacts with right guide rail 43 right flanks, left hanging wheel 28 is positioned at directly over left rail 42, right hanging wheel 37 is positioned at directly over right guide rail 43.
Described support member is to be located at the column 4 on bridge pier 44 and/or to be located at the front equalizer 9 on bridge 45, and column 4 bottoms are fixedly located on bridge pier 44 by anchoring piece 46, are provided with the hound 10 of adjustable in length between column 4 sidepieces and bridge pier 44; Front equalizer 9 two ends are respectively equipped with front support bracket 47, the coaxial front support oil cylinder 48 that is provided with in each front support bracket 47 lower ends, front support oil cylinder 48 lower ends are provided with front support dish 49, and front support oil cylinder 48 overcoats have the front support anchor ear 50 between front support dish 49 and front support bracket 47.
Adopt technique scheme, the support conversion of front leg strut in the present invention in the time setting a roof beam in place operation and via hole operation, gravity while being via hole operation on supporting leg is by the carrier roller going down in front carrying roller supporting mechanism, and in the time setting a roof beam in place operation, gravity more than front leg strut is that carrier roller does not now stress by the roller rack going down in front carrying roller supporting mechanism; While normally setting a roof beam in place, front leg strut is supported on bridge pier, and end is when setting a roof beam in place, and front leg strut is supported on bridge surface, and now front leg strut can be realized by the conversion of column and front equalizer; For the double width case beam of different centre-to-centre spacing, at the interface of the reserved different distance in the junction of front leg strut entablature and front hinge. To meet the generation of setting up double width case beam centre-to-centre spacing; In the time setting up camber beam, can drive front tray to move horizontally by manipulating front traversing driving oil cylinder, relative traversing between the girder of realizing Bridge Erector and front leg strut meets the demand of setting a roof beam in place; When end is the front support oil cylinder holding capacity of avoiding in front equalizer when setting a roof beam in place, between front support oil cylinder and front support dish, install front support anchor ear additional.
The support conversion of rear support leg in the present invention in the time setting a roof beam in place operation and via hole operation, gravity while being via hole operation on rear support leg is by the carrier roller going down in rear carrying roller supporting mechanism, and in the time setting a roof beam in place operation, gravity more than rear support leg is that carrier roller does not now stress by the roller rack going down in rear carrying roller supporting mechanism; For the double width case beam of different centre-to-centre spacing, at the interface of the reserved different distance in the junction of entablature and rear hinge. To meet the variation of setting up double width case beam centre-to-centre spacing; In the time setting up camber beam, can realize relative traversing between crane ' s major girder and rear support leg by rear traversing driving oil cylinder and meet the demand of setting a roof beam in place; Rear support leg is the supporting leg of holding capacity maximum in the time setting a roof beam in place operation, at post-equalization Liang Chu, rear support bracket and hinged is with it installed, rear support oil cylinder is installed below rear support bracket, while setting a roof beam in place, be to avoid the rear support oil cylinder in post-equalization beam to bear pressure, between rear support oil cylinder and rear telescopic mast, install rear support anchor ear additional.
As from the foregoing, front carrying roller supporting mechanism of the present invention and rear carrying roller supporting mechanism can be realized front leg strut, rear support leg in via hole and the strong point conversion of setting a roof beam in place under different work pattern, to meet the instructions for use of Bridge Erector. Front leg strut of the present invention is normally setting a roof beam in place and end is realized when setting a roof beam in place and supported conversion. Front leg strut and rear support leg all can be realized a side by the conversion of column and equalizer and be supported on bridge pier, and opposite side supporting leg is supported on this extremely special construction requirement of Liang Mianshang.
In the time of the operation of Bridge Erector via hole, the hanging wheel of the carrier roller of front carrying roller supporting mechanism and rear carrying roller supporting mechanism and hanging roller box is alternately stressed, be that jacking cylinder shrinks, left support backing plate and right support backing plate take off, left hanging wheel rolls on left rail, right hanging wheel rolls on right guide rail, and whole like this bracing or strutting arrangement just can move along girder; After support means bottom portion is fixing, after support backing plate is taken off, carrier roller support girder. Front left jacking cylinder and the right jacking cylinder of manipulating of the operation of setting a roof beam in place; Height certain crane ' s major girder jacking, on the roller rack between two carrier rollers, the certain thickness support backing plate of cushioning, so that carrier roller does not stress in the time setting a roof beam in place operation, and allows roller rack bear pressure.
In sum, the present invention compared with prior art, has following beneficial effect:
1) the present invention can change the supporting way of front leg strut and rear support leg easily according to different construction operating modes, the application of transverse-moving mechanism (traversing driving oil cylinder), both can meet setting up of camber beam, also the special operation condition that double width case beam centre-to-centre spacing changes can be met, the utmost point special operation condition that a side bridge floor supports, a side bridge pier supports can be met again. Greatly expand the use face of Bridge Erector, can better meet the various demands of setting a roof beam in place.
2) the present invention adopts support anchor ear, has avoided the suffered power of Bridge Erector supporting leg in the process of setting a roof beam in place to be born by support cylinder, has extended the service life of support cylinder.
3) on front carrying roller supporting mechanism and rear carrying roller supporting mechanism, adopt the conversion of supporting way, the wheel load that has solved large-tonnage Bridge Erector middle idler roller wheel is too large, the stress that makes to act on crane ' s major girder causes structural volume huge too greatly, alleviate the overall weight of Bridge Erector, saved manufacture and the cost of investment of equipment.
Brief description of the drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of front leg strut in the time normally setting a roof beam in place in the present invention;
Fig. 3 is the left view of Fig. 2;
Fig. 4 is that in the present invention, front leg strut one side is supported on bridge pier, opposite side is supported on the structural representation on bridge floor;
Fig. 5 be in the present invention front leg strut at end the structural representation when setting a roof beam in place;
Fig. 6 is structural representation when rear support leg is supported on bridge surface in the present invention;
Fig. 7 is the left view of Fig. 6;
Fig. 8 is the structural representation of front carrying roller supporting mechanism and rear carrying roller supporting mechanism in the present invention;
Fig. 9 is A-A cutaway view in Fig. 8.
Detailed description of the invention
As shown in Fig. 1-Fig. 9, the middle part bracing or strutting arrangement of large-tonnage Bridge Erector of the present invention, comprise front leg strut 1 and the rear support leg 2 that is positioned at front leg strut 1 rear, described front leg strut 1 comprises front leg strut entablature 3, front leg strut entablature 3 left and right sides, bottom surface are rotatably connected to a support member by front hinge 8 respectively, front leg strut entablature 3 end faces are respectively equipped with a front slideway 30 of offering along left and right directions in the left and right sides, in front slideway 30, slidably connect front tray 5, front leg strut entablature 3 is provided with the front traversing driving oil cylinder 7 for driving front tray 5 to slide along front slideway 30, front tray 5 is provided with front carrying roller supporting mechanism 6.
Rear support leg 2 comprises rear entablature 11, rear entablature 11 left and right sides, bottom surface are rotatably connected to a horizontally disposed post-equalization beam 16 by rear hinge 15 respectively, post-equalization beam 16 two ends are respectively equipped with rear support bracket 12, the inner coaxial rear support oil cylinder 18 that is provided with of each rear support bracket 12, rear support oil cylinder 18 lower ends are provided with rear telescopic mast 19, the outer rear support anchor ear 17 that is arranged with of rear telescopic mast 19, rear entablature 11 end faces are respectively equipped with a rear slide 31 of offering along left and right directions in the left and right sides, in rear slide 31, slidably connect rear pallet 14, rear entablature 11 is provided with the rear traversing driving oil cylinder 13 for driving rear pallet 14 to slide along rear slide 31, rear pallet 14 is provided with rear carrying roller supporting mechanism 32.
Front carrying roller supporting mechanism 6 is identical with the structure of rear carrying roller supporting mechanism 32.
Front carrying roller supporting mechanism 6 and rear carrying roller supporting mechanism 32 include left roller rack 25 and right roller rack 26, on left roller rack 25, be provided with four left carrier rollers 20 along fore-and-aft direction, left roller rack 25 right sides are provided with left side guide wheel 22, left roller rack 25 left sides are provided with left hook davit 21, left hook davit 21 upper ends are provided with left box body 23, left box body 23 is provided with left motor reducer 27, in left box body 23, be provided with the left hanging wheel 28 being in transmission connection with left motor reducer 27, left hanging wheel 28 is positioned at left side guide wheel 22 tops, right side, in the middle of left roller rack 25, be vertically provided with the left jacking cylinder 24 between middle two left carrier rollers 20.
On right roller rack 26, be provided with four right carrier rollers 29 along fore-and-aft direction, right roller rack 26 left sides are provided with right side guide wheel 33, right roller rack 26 right sides are provided with right hook davit 34, right hook davit 34 upper ends are provided with right case 35, right case 35 is provided with right motor reducer 36, in right case 35, be provided with the right hanging wheel 37 being in transmission connection with right motor reducer 36, right hanging wheel 37 is positioned at right side guide wheel 33 tops, left side, is vertically provided with the right jacking cylinder 38 between middle two right carrier rollers 29 in the middle of right roller rack 26.
Girder 39 bottoms of large-tonnage Bridge Erector are located between left box body 23 and right case 35, left roller rack 25 is provided with and contacts the left support backing plate 40 supporting with girder 39 bottom surfaces, right roller rack 26 is provided with and contacts the right support backing plate 41 supporting with girder 39 bottom surfaces, the foot on girder 39 left sides and right side along its length level is provided with left rail 42 and right guide rail 43, left side guide wheel 22 contacts with left rail 42 left surfaces, right side guide wheel 33 contacts with right guide rail 43 right flanks, left hanging wheel 28 is positioned at directly over left rail 42, right hanging wheel 37 is positioned at directly over right guide rail 43.
Support member is to be located at the column 4 on bridge pier 44 and/or to be located at the front equalizer 9 on bridge 45, and column 4 bottoms are fixedly located on bridge pier 44 by anchoring piece 46, are provided with the hound 10 of adjustable in length between column 4 sidepieces and bridge pier 44; Front equalizer 9 two ends are respectively equipped with front support bracket 47, the coaxial front support oil cylinder 48 that is provided with in each front support bracket 47 lower ends, front support oil cylinder 48 lower ends are provided with front support dish 49, and front support oil cylinder 48 overcoats have the front support anchor ear 50 between front support dish 49 and front support bracket 47.
The support conversion of front leg strut 1 in the present invention in the time setting a roof beam in place operation and via hole operation, gravity while being via hole operation on supporting leg is by the carrier roller going down in front carrying roller supporting mechanism 6, and in the time setting a roof beam in place operation, more than 1 gravity of front leg strut is that carrier roller does not now stress by the roller rack going down in front carrying roller supporting mechanism 6; While normally setting a roof beam in place, front leg strut 1 is supported on bridge pier 44, and end is when setting a roof beam in place, and it is upper that front leg strut 1 is supported on bridge 45 surfaces, and now front leg strut 1 can be realized by column 4 and the conversion of front equalizer 9; For the double width case beam of different centre-to-centre spacing, the interface at front leg strut entablature 3 with the reserved different distance in junction of front hinge 8. To meet the generation of setting up double width case beam centre-to-centre spacing; In the time setting up camber beam, can drive front tray 5 to move horizontally by manipulating front traversing driving oil cylinder 7, relative traversing between the girder 39 of realizing Bridge Erector and front leg strut 1 meets the demand of setting a roof beam in place; When end is front support oil cylinder 48 holding capacity of avoiding in front equalizer 9 when setting a roof beam in place, between front support oil cylinder 48 and front support dish 49, install front support anchor ear 50 additional.
The support conversion of rear support leg 2 in the present invention in the time setting a roof beam in place operation and via hole operation, gravity while being via hole operation on rear support leg 2 is by the carrier roller going down in rear carrying roller supporting mechanism 32, and in the time setting a roof beam in place operation, more than 2 gravity of rear support leg is that carrier roller does not now stress by the roller rack going down in rear carrying roller supporting mechanism 32; For the double width case beam of different centre-to-centre spacing, at the interface of the reserved different distance in the junction of entablature and rear hinge. To meet the variation of setting up double width case beam centre-to-centre spacing; In the time setting up camber beam, can realize relative traversing between crane ' s major girder 39 and rear support leg 2 by rear traversing driving oil cylinder and meet the demand of setting a roof beam in place; Rear support leg 2 is the supporting leg of holding capacity maximum in the time setting a roof beam in place operation, at post-equalization Liang16Chu, rear support bracket 12 and hinged is with it installed, rear support bracket 12 is installed rear support oil cylinder 18 below, while setting a roof beam in place, be to avoid the rear support oil cylinder 18 in post-equalization beam 16 to bear pressure, between rear support oil cylinder 18 and rear telescopic mast 19, install rear support anchor ear 17 additional.
As from the foregoing, front carrying roller supporting mechanism 6 of the present invention and rear carrying roller supporting mechanism 32 can be realized front leg strut 1, rear support leg 2 in via hole and the strong point conversion of setting a roof beam in place under different work pattern, to meet the instructions for use of Bridge Erector. Front leg strut 1 of the present invention is normally setting a roof beam in place and end is realized when setting a roof beam in place and supported conversion. Front leg strut 1 and rear support leg 2 all can be realized a side with the conversion of equalizer by column 4 and be supported on bridge pier 44, and opposite side supporting leg is supported on this extremely special construction requirement of Liang Mianshang.
In the time of the operation of Bridge Erector via hole, the hanging wheel of the carrier roller of front carrying roller supporting mechanism 6 and rear carrying roller supporting mechanism 32 and hanging roller box is alternately stressed, be that jacking cylinder shrinks, left support backing plate 40 and right support backing plate 41 take off, left hanging wheel 28 rolls on left rail 42, right hanging wheel 37 rolls on right guide rail 43, and whole like this bracing or strutting arrangement just can move along girder 39; After support means bottom portion is fixing, after support backing plate is taken off, carrier roller support girder 39. Front left jacking cylinder 24 and the right jacking cylinder 38 of manipulating of the operation of setting a roof beam in place; The certain height of crane ' s major girder 39 jackings, on the roller rack between two carrier rollers, the certain thickness support backing plate of cushioning, so that carrier roller does not stress in the time setting a roof beam in place operation, and allows roller rack bear pressure.
Above embodiment is the unrestricted technical scheme of the present invention in order to explanation only, although the present invention is had been described in detail with reference to above-described embodiment, those of ordinary skill in the art is to be understood that: still can modify or be equal to replacement the present invention, and not departing from any modification or partial replacement of the spirit and scope of the present invention, it all should be encompassed in the middle of claim scope of the present invention.

Claims (3)

1. the middle part bracing or strutting arrangement of large-tonnage Bridge Erector, comprise front leg strut (1) and be positioned at the rear support leg (2) at front leg strut (1) rear, it is characterized in that: described front leg strut (1) comprises front leg strut entablature (3), front leg strut entablature (3) left and right sides, bottom surface is rotatably connected to a support member by front hinge (8) respectively, front leg strut entablature (3) end face is respectively equipped with a front slideway (30) of offering along left and right directions in the left and right sides, in front slideway (30), slidably connect front tray (5), front leg strut entablature (3) is provided with the front traversing driving oil cylinder (7) for driving front tray (5) to slide along front slideway (30), front tray (5) is provided with front carrying roller supporting mechanism (6),
Described rear support leg (2) comprises rear entablature (11), rear entablature (11) left and right sides, bottom surface is rotatably connected to a horizontally disposed post-equalization beam (16) by rear hinge (15) respectively, post-equalization beam (16) two ends are respectively equipped with rear support bracket (12), the inner coaxial rear support oil cylinder (18) that is provided with of each rear support bracket (12), rear support oil cylinder (18) lower end is provided with rear telescopic mast (19), the outer rear support anchor ear (17) that is arranged with of rear telescopic mast (19), rear entablature (11) end face is respectively equipped with a rear slide (31) of offering along left and right directions in the left and right sides, in rear slide (31), slidably connect rear pallet (14), rear entablature (11) is provided with the rear traversing driving oil cylinder (13) for driving rear pallet (14) to slide along rear slide (31), rear pallet (14) is provided with rear carrying roller supporting mechanism (32),
Front carrying roller supporting mechanism (6) is identical with the structure of rear carrying roller supporting mechanism (32).
2. the middle part bracing or strutting arrangement of large-tonnage Bridge Erector according to claim 1, it is characterized in that: described front carrying roller supporting mechanism (6) and rear carrying roller supporting mechanism (32) include left roller rack (25) and right roller rack (26), left roller rack (25) is upper is provided with four left carrier rollers (20) along fore-and-aft direction, left roller rack (25) right side is provided with left side guide wheel (22), left roller rack (25) left side is provided with left hook davit (21), left hook davit (21) upper end is provided with left box body (23), left box body (23) is provided with left motor reducer (27), in left box body (23), be provided with the left hanging wheel (28) being in transmission connection with left motor reducer (27), left hanging wheel (28) is positioned at top, left side guide wheel (22) right side, in the middle of left roller rack (25), be vertically provided with the left jacking cylinder (24) between two left carrier rollers (20) in the middle of being positioned at,
Right roller rack (26) is upper is provided with four right carrier rollers (29) along fore-and-aft direction, right roller rack (26) left side is provided with right side guide wheel (33), right roller rack (26) right side is provided with right hook davit (34), right hook davit (34) upper end is provided with right case (35), right case (35) is provided with right motor reducer (36), in right case (35), be provided with the right hanging wheel (37) being in transmission connection with right motor reducer (36), right hanging wheel (37) is positioned at top, right side guide wheel (33) left side, in the middle of right roller rack (26), be vertically provided with the right jacking cylinder (38) between two right carrier rollers (29) in the middle of being positioned at,
Girder (39) bottom of large-tonnage Bridge Erector is located between left box body (23) and right case (35), left roller rack (25) is provided with and contacts the left support backing plate (40) supporting with girder (39) bottom surface, right roller rack (26) is provided with and contacts the right support backing plate (41) supporting with girder (39) bottom surface, the foot on girder (39) left side and right side along its length level is provided with left rail (42) and right guide rail (43), left side guide wheel (22) contacts with left rail (42) left surface, right side guide wheel (33) contacts with right guide rail (43) right flank, left hanging wheel (28) is positioned at directly over left rail (42), right hanging wheel (37) is positioned at directly over right guide rail (43).
3. the middle part bracing or strutting arrangement of large-tonnage Bridge Erector according to claim 1 and 2, it is characterized in that: described support member is for to be located at the column (4) on bridge pier (44) and/or to be located at the front equalizer (9) on bridge (45), it is upper that column (4) bottom is fixedly located at bridge pier (44) by anchoring piece (46), is provided with the hound (10) of adjustable in length between column (4) sidepiece and bridge pier (44); Front equalizer (9) two ends are respectively equipped with front support bracket (47), the coaxial front support oil cylinder (48) that is provided with in each front support bracket (47) lower end, front support oil cylinder (48) lower end is provided with front support dish (49), and front support oil cylinder (48) overcoat has the front support anchor ear (50) being positioned between front support dish (49) and front support bracket (47).
CN201510059251.1A 2014-12-23 2015-02-05 The middle part bracing or strutting arrangement of large-tonnage Bridge Erector CN104631334B (en)

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