CN112227221A - Rear support leg device of bridge girder erection machine - Google Patents
Rear support leg device of bridge girder erection machine Download PDFInfo
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- CN112227221A CN112227221A CN202011228927.2A CN202011228927A CN112227221A CN 112227221 A CN112227221 A CN 112227221A CN 202011228927 A CN202011228927 A CN 202011228927A CN 112227221 A CN112227221 A CN 112227221A
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- landing leg
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- 230000001105 regulatory effect Effects 0.000 claims description 4
- 125000003003 spiro group Chemical group 0.000 claims description 4
- 239000003381 stabilizer Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 description 5
- 230000003014 reinforcing effect Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 241000761557 Lamina Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
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- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
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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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- 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
- E01D21/06—Methods or apparatus specially adapted for erecting or assembling bridges by translational movement of the bridge or bridge sections
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Abstract
The invention discloses a rear supporting leg device of a bridge girder erection machine, which comprises a rear supporting leg cross beam, wherein a bottom rotary supporting frame is fixed on the bottom surface of the rear supporting leg cross beam, a rear supporting leg cross beam pulley block is installed on the rear supporting leg cross beam, a rear supporting leg balancing seat is fixedly connected onto a top plate of the rear supporting leg cross beam pulley block through a bolt, and an inner sleeve body connecting seat is hinged onto the rear supporting leg balancing seat through a balancing shaft; it adopts the back landing leg to remove the change gear and removes along the bridge girder erection machine girder, its frictional force is little, and is effectual, and it can adjust the bottom swivel mount frame as required and be in the bottom surface position of back landing leg crossbeam, guarantee that it can be in two lateral wall portions of case roof beam directly over, and the back landing leg crossbeam assembly pulley of two back landing legs is in on the back landing leg crossbeam, the increase can be adjusted to the interval between the back landing leg crossbeam assembly pulley of two back landing legs, it can guarantee that the distance between two back landing legs is fit for the case roof beam connecting block to pass through, satisfy atress and needs that pass through, and is effectual.
Description
The technical field is as follows:
the invention relates to the technical field of road and bridge equipment, in particular to a rear supporting leg device of a bridge girder erection machine.
Background art:
in the conventional bridge girder erection machine, the rear support leg device moves along the top surface of the edge part of the main girder through the polytetrafluoroethylene plate when moving along the main girder, so that the friction force is large, the movement and the adjustment are not easy, and the effect is poor;
simultaneously, it is the direct hard joint bottom runing rest in bottom of back landing leg device generally, the bottom surface of the back landing leg of bottom runing rest need press the stress position department of the top surface of the case roof beam of bridge, on the case roof beam top surface of the vertical top of two lateral wall portions of case roof beam promptly, and because the middle part of bridging machine need guarantee can pass through the case roof beam connecting block, interval between two back landing legs of consequently bridging machine needs to be enough big, when its interval is greater than the distance between two lateral wall portions of case roof beam, the bottom of its back landing leg can directly press on two pterygoid laminas in the top of case roof beam, just can't atress completely this moment, can make the pterygoid lamina impaired, the effect is poor.
The invention content is as follows:
the invention aims to provide a rear supporting leg device of a bridge girder erection machine, which adopts a rear supporting leg moving hanging wheel to move along a main beam of the bridge girder erection machine, has small friction force and good effect, can adjust the position of a bottom rotating supporting frame at the bottom surface of a rear supporting leg cross beam according to the requirement to ensure that the bottom rotating supporting frame can be positioned right above two side wall parts of a box girder, rear supporting leg cross beam pulley blocks of two rear supporting legs are positioned on the rear supporting leg cross beam, the distance between the rear supporting leg cross beam pulley blocks of the two rear supporting legs can be adjusted and increased, can ensure that the distance between the two rear supporting legs is suitable for a box girder connecting block to pass through, meets the requirements of stress and passing, and has good effect.
The technical solution of the invention is as follows:
a rear supporting leg device of a bridge girder erection machine comprises a rear supporting leg cross beam, a plurality of bottom rotary supporting frames are fixed on the bottom surface of the rear supporting leg cross beam, a rear supporting leg cross beam pulley block is installed on the rear supporting leg cross beam, a rear supporting leg balancing seat is fixedly connected on the top plate of the rear supporting leg cross beam pulley block through bolts, an inner sleeve body connecting seat is hinged on the rear supporting leg balancing seat through a balancing shaft, an inner sleeve body is fixed on the top surface of the inner sleeve body connecting seat, the upper part of the inner sleeve body is inserted and sleeved in the outer sleeve body, two oblique supporting arms at the bottom of the rear supporting leg supporting frame are fixed on two outer side walls of the outer sleeve body, a rear supporting leg main oil cylinder is hinged to the middle of the bottom surface of a horizontal beam of the rear supporting leg supporting frame, a lower connecting seat is fixed on the top surface of an inner sleeve body connecting seat, the bottom end of a push rod of the rear supporting leg main oil cylinder is hinged to the lower connecting seat through a hinge shaft, and the inner sleeve body and the outer sleeve body are fixedly connected through a plurality of rear supporting leg pin shafts;
the rear support leg device is characterized in that a rear support leg side supporting frame is fixed to the left portion and the right portion of the top surface of a horizontal beam of the rear support leg supporting frame, a rear support leg moving speed reducing motor is fixed to the middle portion of the outer side wall of the rear support leg side supporting frame, an output shaft of the rear support leg moving speed reducing motor penetrates through the rear support leg side supporting frame and is fixed with a rear support leg moving driving gear, a rear support leg moving hanging wheel is hinged to the rear support leg side supporting frame through a bearing, a rear support leg driving gear is fixed to the inner end portion of the rear support leg moving hanging wheel.
The bottom rotary supporting frame comprises a rear supporting leg bottom rotary supporting frame, the rear supporting leg bottom rotary supporting frame is fixedly connected to the bottom surface of a rear supporting leg cross beam through bolts, a rear supporting leg bottom adjusting block is fixed to the bottom surface of the rear supporting leg bottom rotary supporting frame, and a screw portion of a rear support supporting leg is in screwed connection with a middle screw hole of the rear supporting leg bottom adjusting block.
The rear supporting leg beam pulley block comprises a rear supporting leg lower pulley seat, a plurality of lower supporting plates fixed on the bottom edge of the rear supporting leg lower pulley seat are hinged with rear supporting leg rollers through bearings, and the top surfaces of the rear supporting leg rollers and the bottom surface of the top plate edge of the rear supporting leg beam have intervals.
The bottom surface of the rear supporting leg lower pulley seat is pressed on the top surface of the top plate of the rear supporting leg cross beam, the middle part of the top plate of the rear supporting leg cross beam is provided with a rear supporting leg upper part moving through groove, a rear supporting leg positioning pressing plate is fixedly connected onto a bottom plate of the rear supporting leg lower pulley seat through a bolt, a bolt plug bush of the rear supporting leg positioning pressing plate is sleeved in the rear supporting leg upper part moving through groove, and the top surface of the rear supporting leg positioning pressing plate is close to the bottom surface of the top plate.
A plurality of rear leg edge arc through grooves are formed in the edge of the top plate of the rear leg lower pulley seat, and bolts connected between the rear leg balance seat and the top plate of the rear leg lower pulley seat are inserted and sleeved in the rear leg edge arc through grooves;
and the bottom plate of the rear leg balancing seat is hinged with the middle part of the top plate of the rear leg lower pulley seat through a hinge shaft.
A plurality of vertically-arranged connecting through holes are formed in two side walls of the inner sleeve body, a plurality of vertically-arranged external connecting through holes are formed in two corresponding side walls of the outer sleeve body, and the rear support leg pin shaft is inserted in the corresponding connecting through holes and the external connecting through holes.
All articulated through the articulated shaft on the inside wall of back landing leg side support frame have a direction guide pulley, and the bridge girder erection machine girder has been placed to the top of the horizontal beam of back landing leg support frame, and the bottom plate side of the bottom beam of bridge girder erection machine girder is close to the lateral wall of the direction guide pulley that corresponds.
The bottom surface of the rear support leg moving hanging wheel is positioned on the top surface of the edge of the top plate of the bottom beam of the main beam of the bridge erecting machine.
Wear-resisting guide strips are fixed on the top surfaces of the top plate side portions of the bottom beams of the main beam of the bridge erecting machine, and the bottom surfaces of the rear support leg moving hanging wheels are close to the top surfaces of the corresponding wear-resisting guide strips.
A plurality of rear supporting leg cross beam reinforcing blocks with I-shaped sections are arranged between the two main transverse plates in the middle of the rear supporting leg cross beam, and two ends of each rear supporting leg cross beam reinforcing block are welded and fixed on the inner side walls of the two main transverse plates.
The invention has the beneficial effects that:
1. it adopts the rear support leg moving change gear to move along the main beam of the bridge girder erection machine, has small friction force and good effect,
2. it can adjust the bottom rotation support frame as required and be in the bottom surface position of back landing leg crossbeam, guarantees that it can be in two lateral wall portions of case roof beam directly over, and the back landing leg crossbeam assembly pulley of two back landing legs is in on the back landing leg crossbeam, and the increase can be adjusted to the interval between the back landing leg crossbeam assembly pulley of two back landing legs, and it can guarantee that the distance between two back landing legs is fit for the case roof beam connecting block to pass through, satisfies the atress and needs that pass through, and is effectual.
3. It is through the interior cover body flexonics of the balanced seat of back landing leg crossbeam assembly pulley and back landing leg, the back landing leg crossbeam can produce certain slope when placing, and interior cover body need guarantee vertical state, and simultaneously, the bottom surface laminating that needs to guarantee back landing leg crossbeam assembly pulley again presses the top surface at back landing leg crossbeam, can pass through the balanced seat of back landing leg through back landing leg crossbeam assembly pulley along balanced axle rotatory moving angle, the bottom surface laminating that realizes back landing leg crossbeam assembly pulley presses the top surface at back landing leg crossbeam, and simultaneously, guarantee that the interior cover body is vertical state, the bottom surface and the back landing leg crossbeam atress of back landing leg crossbeam assembly pulley are balanced.
Description of the drawings:
FIG. 1 is a schematic view of a partial structure between the present invention and a main beam of a bridge erecting machine;
FIG. 2 is a partial schematic view of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 1;
FIG. 4 is a schematic view of an angle-changing partial structure according to the present invention;
FIG. 5 is an enlarged view of a portion of FIG. 4;
fig. 6 is a partial cross-sectional view of the rear leg lower pulley block.
The specific implementation mode is as follows:
example (b): referring to fig. 1 to 6, a rear leg device of a bridge girder comprises a rear leg beam 20, a plurality of bottom rotary support frames 21 are fixed on the bottom surface of the rear leg beam 20, a rear leg beam pulley block 22 is installed on the rear leg beam 20, a rear leg balance seat 23 is fixedly connected on the top plate of the rear leg beam pulley block 22 through bolts, an inner sleeve body connecting seat 24 is hinged on the rear leg balance seat 23 through a balance shaft, an inner sleeve body 25 is fixed on the top surface of the inner sleeve body connecting seat 24, the upper part of the inner sleeve body 25 is inserted and sleeved in the outer sleeve body 26, two oblique support arms 271 at the bottom of the rear leg support frame 27 are fixed on two outer side walls of the outer sleeve body 26, a rear leg main cylinder 272 is hinged in the middle of the bottom surface of a horizontal beam of the rear leg support frame 27, a lower connecting seat is fixed on the top surface of the inner sleeve body connecting seat 24, the bottom end of a, the inner sleeve body 25 and the outer sleeve body 26 are fixedly connected through a plurality of rear leg pin shafts 201;
the left part and the right part of the top surface of a horizontal beam of the rear leg supporting frame 27 are both fixed with a rear leg side supporting frame 273, the middle part of the outer side wall of the rear leg side supporting frame 273 is fixed with a rear leg moving speed reducing motor 274, the output shaft of the rear leg moving speed reducing motor 274 penetrates through the rear leg side supporting frame 273 and is fixed with a rear leg moving driving gear 275, a rear leg moving hanging wheel 276 is hinged on the rear leg side supporting frame 273 through a bearing, a rear leg transmission gear 277 is fixed at the inner end part of the rear leg moving hanging wheel 276, and the rear leg transmission gear 277 is meshed with the rear leg moving driving gear 275.
Further, bottom rotation support frame 21 includes back landing leg bottom rotation support frame 211, and back landing leg bottom rotation support frame 211 passes through bolt fixed connection on the bottom surface of back landing leg crossbeam 20, is fixed with back landing leg bottom regulating block on the bottom surface of back landing leg bottom rotation support frame 211, and the screw portion spiro union of back landing leg support 212 is in the middle part spiro union hole of back landing leg bottom regulating block.
Furthermore, the rear leg beam pulley block 22 includes a rear leg lower pulley seat 221, a plurality of lower support plates fixed on the bottom edge of the rear leg lower pulley seat 221 are hinged with a rear leg roller 222 through bearings, and the top surface of the rear leg roller 222 is spaced from the bottom surface of the top plate edge of the rear leg beam 20.
Furthermore, the bottom surface of the rear leg lower pulley seat 221 is pressed against the top surface of the top plate of the rear leg beam 20, a rear leg upper portion moving through groove 202 is formed in the middle of the top plate of the rear leg beam 20, a rear leg positioning pressing plate 229 is fixedly connected to the bottom plate of the rear leg lower pulley seat 221 through bolts, the bolts of the rear leg positioning pressing plate 229 are inserted into the rear leg upper portion moving through groove 202, and the top surface of the rear leg positioning pressing plate 229 is close to the bottom surface of the top plate of the rear leg beam 20.
Further, a plurality of rear leg edge arc through grooves 223 are formed in the edge of the top plate of the rear leg lower pulley seat 221, and bolts connected between the rear leg balance seat 23 and the top plate of the rear leg lower pulley seat 221 are inserted into the rear leg edge arc through grooves 223;
the bottom plate of the rear leg balancing seat 23 is hinged to the middle of the top plate of the rear leg lower pulley seat 221 through a hinge shaft.
Further, a plurality of vertically arranged connecting through holes are formed on two side walls of the inner sleeve body 25, a plurality of vertically arranged external connecting through holes are formed on two corresponding side walls of the outer sleeve body 26, and the rear leg pin shaft 201 is inserted into the corresponding connecting through holes and the external connecting through holes.
Further, all articulate through the articulated shaft on the inside wall of back landing leg side support frame 273 and have guide pulley 278, bridge girder erection machine main beam 1000 has been placed to the top of the horizontal beam of back landing leg support frame 273, and the bottom plate side of the bottom beam of bridge girder erection machine main beam 1000 is close to the lateral wall of corresponding guide pulley 278.
Further, the bottom surface of the rear leg moving hanger 276 is located at the top surface of the top plate edge of the bottom beam of the main beam 1000 of the bridge girder erection machine.
Further, a wear-resistant guide strip 1001 is fixed on the top surface of the top plate edge of the bottom beam of the main beam 1000 of the bridge girder erection machine, and the bottom surface of the rear leg moving hanging wheel 276 is close to the top surface of the corresponding wear-resistant guide strip 1001.
Further, a plurality of rear leg beam reinforcing blocks 28 with h-shaped cross sections are arranged between the two main transverse plates in the middle of the rear leg beam 20, and two ends of the plurality of rear leg beam reinforcing blocks 28 are welded and fixed on the inner side walls of the two main transverse plates.
The working principle is as follows: when in use, the embodiment is hung on the main girder 1000 of the bridge erecting machine by the rear-leg moving hanging wheel 276, when the rear leg needs to be used as a support, the bottom surface of the rear support leg 212 is pressed on the top surface right above the side wall part of the box girder of the bridge body by the push rod of the rear-leg main cylinder 272, the height of the bottom surface of the rear support leg 212 can be adjusted by rotating the screw part of the rear support leg 212, wherein after the push rod of the rear-leg main cylinder 272 is pushed, the bottom surface of the rear-leg lower pulley seat 221 is pressed on the top surface of the top plate of the rear-leg cross beam 20, then, the nut screwed on the bolt at the rear-leg positioning pressing plate 229 is rotated, the top surface of the rear-leg positioning pressing plate 229 is pressed on the bottom surface of the top plate of the rear-leg cross beam 20, so as to realize fixation, wherein, when the bottom surface of the rear-lower-, through the hinging action (flexible connection) of the balance shaft of the rear leg balance seat 23, the relative rotation between the rear leg lower pulley seat 221 and the inner sleeve body connecting seat 24 can be adjusted, so that the inner sleeve body 25 is ensured to be in a vertical state, the bottom surface of the rear leg lower pulley seat 221 is pressed against the top surface of the top plate of the rear leg beam 20, and the balance of stress is realized.
When two rear leg beam pulley blocks 22 in this embodiment need to be moved, that is, when two rear legs (each of which is composed of the rear leg beam pulley block 22, the rear leg balance seat 23, the inner sleeve connecting seat 24, the inner sleeve 25, the outer sleeve 26, and the rear leg support 27) need to be moved, nuts screwed on bolts at the rear leg positioning pressure plate 229 can be loosened, nuts of bolts connected between the rear leg balance seat 23 and the top plate of the rear leg lower pulley seat 221 are loosened, and retracted by the push rod of the rear leg main cylinder 272, at this time, the top plate edge of the rear leg beam 20 is pressed against the top surface of the rear leg roller 222, so that the rear leg beam pulley block 22 can move along the rear leg beam 20, and at the same time, nuts of bolts connected between the rear leg balance seat 23 and the top plate of the rear leg lower pulley seat 221 are loosened, and a plurality of rear leg arc-shaped edge through grooves 223 are formed at the edge of the top plate of the leg lower pulley seat 221, the rear supporting leg balancing seat 23 can horizontally rotate for a certain angle along the top plate of the rear supporting leg lower pulley seat 221, and when the rear supporting leg device moves along the top surface of the arc section of the box girder of the bridge body, the rear supporting leg device can rotate for a certain degree according to an arc line and cannot be locked; meanwhile, due to the fact that a push rod of the rear support leg main oil cylinder 272 retracts, the bottom surface of the rear support leg moving hanging wheel 276 is made to be tightly attached to the top surface of the wear-resistant guide strip 1001, the bottom plate of the bottom beam of the main beam 1000 of the bridge girder erection machine is not pressed against the upper portion of the horizontal beam of the rear support leg supporting frame 273 any more, then the rear support leg moving speed reducing motor 274 operates, the rear support leg can move and convey along the main beam 1000 of the bridge girder erection machine, the rear support leg moving hanging wheel 276 rolls and moves, friction force is small, and moving is convenient.
Meanwhile, all the guide wheels 278 can ensure that the main beam 1000 of the bridge girder erection machine is positioned between all the guide wheels 278 when the rear leg moving change gear 276 moves along the top surface of the wear-resistant guide bar 1001, so that excessive deviation between the position of the rear leg supporting frame 27 and the main beam 1000 of the bridge girder erection machine can not be generated when the rear leg supporting frame 27 moves, and the bottom surface of the rear leg moving change gear 276 is always pressed against the top surface of the wear-resistant guide bar 1001 to move when the rear leg moving change gear moves.
In this embodiment, the bottom surface of the rear leg beam 20 is fixed with four bottom rotation support frames 21, the rear leg bottom rotation support frames 211 of the four bottom rotation support frames 21 are fixedly connected to the bottom surface of the rear leg beam 20 through bolts, a plurality of connection screw holes are formed in the bottom surface of the rear leg beam 20, the rear leg bottom rotation support frames 211 are installed in the corresponding connection screw holes as required, so that the positions of the bottom rotation support frames 21 on the bottom surface of the rear leg beam 20 are changed as required, and different installation requirements are met.
Claims (10)
1. A back landing leg device of bridging machine, includes back landing leg crossbeam (20), its characterized in that: a plurality of bottom rotary support frames (21) are fixed on the bottom surface of the rear support leg beam (20), a rear support leg beam pulley block (22) is installed on the rear support leg beam (20), a rear support leg balance seat (23) is fixedly connected on the top plate of the rear support leg beam pulley block (22) through bolts, an inner sleeve body connecting seat (24) is hinged on the rear support leg balance seat (23) through a balance shaft, an inner sleeve body (25) is fixed on the top surface of the inner sleeve body connecting seat (24), the upper part of the inner sleeve body (25) is inserted and sleeved in the outer sleeve body (26), two oblique support arms (271) at the bottom of the rear support leg support frame (27) are fixed on two outer side walls of the outer sleeve body (26), a rear support leg main oil cylinder (272) is hinged in the middle of the bottom surface of a horizontal beam of the rear support leg support frame (27), a lower connecting seat is fixed on the top surface of the inner sleeve body connecting seat (24, the inner sleeve body (25) and the outer sleeve body (26) are fixedly connected through a plurality of rear supporting leg pin shafts (201);
the top surface left part and the right part of the horizontal beam of back landing leg support frame (27) all are fixed with back landing leg side support frame (273), the lateral wall middle part of back landing leg side support frame (273) is fixed with back landing leg removal gear motor (274), the output shaft that back landing leg removed gear motor (274) passes back landing leg side support frame (273) and is fixed with back landing leg removal drive gear (275), it has back landing leg removal peg (276) to articulate through the bearing on back landing leg side support frame (273), the interior tip that back landing leg removed peg (276) is fixed with back landing leg drive gear (277), back landing leg drive gear (277) and back landing leg removal drive gear (275) mesh mutually.
2. A rear leg assembly of a bridge girder erection machine according to claim 1, wherein: bottom rotation support frame (21) are including back landing leg bottom rotation support frame (211), and back landing leg bottom rotation support frame (211) is fixed with back landing leg bottom regulating block on the bottom surface of back landing leg crossbeam (20) through bolt fixed connection on the bottom surface of back landing leg bottom rotation support frame (211), and the screw section spiro union of back support stabilizer blade (212) is in the middle part spiro union hole of back landing leg bottom regulating block.
3. A rear leg assembly of a bridge girder erection machine according to claim 1, wherein: rear leg crossbeam assembly pulley (22) include rear leg lower pulley seat (221), and articulated through the bearing have rear leg gyro wheel (222) on a plurality of lower backup pads that rear leg lower pulley seat (221)'s bottom surface limit portion is fixed with, and the top surface of rear leg gyro wheel (222) has the interval with the roof limit portion bottom surface of rear leg crossbeam (20).
4. A rear leg assembly of a bridge girder erection machine according to claim 3, wherein: the bottom surface of the rear leg lower pulley seat (221) is pressed against the top surface of the top plate of the rear leg cross beam (20), a rear leg upper portion moving through groove (202) is formed in the middle of the top plate of the rear leg cross beam (20), a rear leg positioning pressing plate (229) is fixedly connected onto the bottom plate of the rear leg lower pulley seat (221) through bolts, bolt inserting sleeves of the rear leg positioning pressing plate (229) are arranged in the rear leg upper portion moving through groove (202), and the top surface of the rear leg positioning pressing plate (229) is close to the bottom surface of the top plate of the rear leg cross beam (20).
5. A rear leg assembly of a bridge girder erection machine according to claim 3, wherein: a plurality of rear leg edge arc-shaped through grooves (223) are formed in the edge of the top plate of the rear leg lower pulley seat (221), and bolts connected between the rear leg balance seat (23) and the top plate of the rear leg lower pulley seat (221) are inserted into the rear leg edge arc-shaped through grooves (223);
the bottom plate of the rear leg balancing seat (23) is hinged with the middle part of the top plate of the rear leg lower pulley seat (221) through a hinge shaft.
6. A rear leg assembly of a bridge girder erection machine according to claim 1, wherein: a plurality of vertically-arranged connecting through holes are formed in two side walls of the inner sleeve body (25), a plurality of vertically-arranged external connecting through holes are formed in two corresponding side walls of the outer sleeve body (26), and the rear leg pin shaft (201) is inserted and sleeved in the corresponding connecting through holes and the external connecting through holes.
7. A rear leg assembly of a bridge girder erection machine according to claim 1, wherein: all articulated through the articulated shaft have direction guide pulley (278) on the inside wall of back landing leg side support frame (273), and frame bridge crane girder (1000) has been placed to the top of the horizontal beam of back landing leg support frame (273), and the bottom plate side of the bottom beam of frame bridge crane girder (1000) is close to the lateral wall of the direction guide pulley (278) that corresponds.
8. A rear leg assembly of a bridge girder erection machine according to claim 7, wherein: the bottom surface of the rear support leg moving change gear (276) is positioned on the top surface of the top plate edge part of the bottom beam of the main beam (1000) of the bridge girder erection machine.
9. A rear leg assembly of a bridge girder erection machine according to claim 8, wherein: wear-resistant guide strips (1001) are fixed on the top surfaces of the top plate side portions of the bottom beams of the main beam (1000) of the bridge erecting machine, and the bottom surfaces of the rear support leg moving hanging wheels (276) are close to the top surfaces of the corresponding wear-resistant guide strips (1001).
10. A rear leg assembly of a bridge girder erection machine according to claim 1, wherein: be equipped with back landing leg crossbeam boss (28) that a plurality of cross-sections are the I shape between two main horizontal boards in the middle part of back landing leg crossbeam (20), the both ends welded fastening of a plurality of back landing leg crossbeam bosses (28) is on the inside wall of two main horizontal boards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011228927.2A CN112227221B (en) | 2020-11-06 | 2020-11-06 | Rear supporting leg device of bridge girder erection machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011228927.2A CN112227221B (en) | 2020-11-06 | 2020-11-06 | Rear supporting leg device of bridge girder erection machine |
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| CN112227221A true CN112227221A (en) | 2021-01-15 |
| CN112227221B CN112227221B (en) | 2024-05-10 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112962459A (en) * | 2021-02-05 | 2021-06-15 | 武汉通联路桥机械技术有限公司 | Integrated bridge girder erection machine for piling, pier mounting and girder erection and bridge construction method |
| CN113651248A (en) * | 2021-06-28 | 2021-11-16 | 中铁第五勘察设计院集团有限公司 | Moving device of cable crane |
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