CN110607756B - Connecting structure of main beam and supporting legs of bridge girder erection machine - Google Patents
Connecting structure of main beam and supporting legs of bridge girder erection machine Download PDFInfo
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- CN110607756B CN110607756B CN201910978868.1A CN201910978868A CN110607756B CN 110607756 B CN110607756 B CN 110607756B CN 201910978868 A CN201910978868 A CN 201910978868A CN 110607756 B CN110607756 B CN 110607756B
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- main beam
- portal frame
- bearing platform
- bridge
- symmetrically arranged
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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
Abstract
The invention discloses a connecting structure of a main beam and a supporting leg of a bridge girder erection machine, which comprises a bearing platform, a lifting mechanism, a pull rod, a connecting rod, a stand column, a portal frame, a rotating mechanism, a power pulley mechanism, a supporting leg, a main beam mechanism and a bridge pier, wherein the supporting leg and the bridge pier are arranged at two ends of the main beam mechanism, the supporting leg is fixedly connected with the bridge pier, the stand column is symmetrically arranged at one end of the main beam mechanism, the bearing platform is arranged at one end of the main beam mechanism, the bottom of the bearing platform is fixedly connected with the top ends of the two symmetrically arranged stand columns, the lifting mechanism is fixed at the top of the bearing platform, the portal frame is arranged below the bearing platform, a driving rolling shaft and a driven rolling shaft are driven by a servo motor to rotate, a sliding block is driven by a pull rope to slide in a limiting groove, the sliding, when the skew bridge is used, the bridge can be directly erected after being rotated by a proper angle without being disassembled.
Description
Technical Field
The invention relates to a connecting structure, in particular to a connecting structure of a main beam and a supporting leg of a bridge girder erection machine, and belongs to the technical field of bridge girder erection machine application.
Background
The bridge girder erection machine is equipment for placing prefabricated beam pieces on a prefabricated bridge pier. Bridge girder erection machines belong to the crane category, as their main function is to lift the beam piece up and then transport it into position and put it down. But it is very different from a general crane. The required conditions are harsh, and the beam piece runs upwards or is called longitudinal movement. The bridge girder erection machine is divided into a highway bridge erection machine, a conventional railway bridge erection machine, a passenger-dedicated railway bridge erection machine and the like.
The current patent publication is a novel bridging machine of CN201058969, this bridging machine provides a light, compact and make things convenient for the complete machine to pass through the novel bridging machine in tunnel, however, this bridging machine can't change the longitudinal position of portal frame, simultaneously, at this bridging machine in the curve section, need angle of rotation directly to erect the bridge during the skew bridge, need dismantle the part, operation such as reinstallation does this, we provide a connection structure of bridging machine girder and landing leg.
Disclosure of Invention
The invention aims to drive a portal frame to move upwards through a lifting mechanism, so that a connecting rod arranged on the outer side of an upright post and a pull rod arranged on the inner side of the upright post are contracted, the position of the portal frame is changed, a driving roller and a driven roller are driven to rotate through a servo motor, a pull rope drives a sliding block to slide in a limiting groove, the sliding block drives a bottom plate to move, and a turntable on the bottom plate adjusts the angle according to actual requirements.
The technical problem solved by the invention is as follows:
(1) how to adjust the position of the bridging girder in the longitudinal direction of the upright column by arranging the portal frame so as to solve the problem that the longitudinal height of the bridging girder is difficult to adjust in the prior art;
(2) how to drive initiative roller bearing and driven roller bearing through servo motor and rotate for the stay cord drives the slider and slides in the spacing inslot, and the slider drives the bottom plate motion, and the carousel on the bottom plate carries out angle modulation according to actual need, solves among the prior art and is difficult to directly adjust the problem of bridging curve section under the condition of not dismantling the overhead device.
The purpose of the invention can be realized by the following technical scheme: a connecting structure of a main beam and supporting legs of a bridge girder erection machine comprises a bearing platform, a lifting mechanism, a pull rod, a connecting rod, an upright post, a portal frame, a rotating mechanism, a power pulley mechanism, supporting legs, a main beam mechanism and a pier, wherein the supporting legs and the pier are arranged at two ends of the main beam mechanism respectively, the supporting legs are fixedly connected with the pier, and the upright post is symmetrically arranged at one end of the main beam mechanism;
a bearing platform is arranged at one end of the main beam mechanism, the bottom of the bearing platform is fixedly connected with the top ends of the two symmetrically arranged stand columns, and a lifting mechanism is fixed at the top of the bearing platform;
a portal frame is arranged below the bearing platform and is positioned between two symmetrically arranged stand columns, the portal frame is connected between the two symmetrically arranged stand columns in a sliding manner, connecting rods are symmetrically fixed at the bottom of the bearing platform, the bottom ends of the connecting rods are fixedly connected with the portal frame, the two symmetrically arranged connecting rods are positioned at the outer sides of the two symmetrically arranged stand columns, one sides of the stand columns, far away from the connecting rods, are rotatably connected with pull rods through hinges, and one ends of the pull rods, far away from the stand columns, are rotatably connected with the top of the portal frame through hinges;
the limiting groove is formed in the inner wall of the bottom of the portal frame, the power pulley mechanism is installed in the limiting groove, the rotating mechanism is arranged above the power pulley mechanism, and the rotating mechanism is located right above the limiting groove.
The invention has further technical improvements that: the power pulley mechanism consists of a driving rolling shaft, a servo motor, a pull rope, a sliding block and a driven rolling shaft, the driving rolling shaft and the driven rolling shaft are symmetrically arranged in the limiting groove, the driving rolling shaft and the driven rolling shaft are rotationally connected with the portal frame through bearings, and the driving rolling shaft and the driven rolling shaft are in transmission connection through the pull rope;
the limiting groove is internally fixed with a servo motor, the end part of an output shaft of the servo motor is fixedly connected with one end of the driving rolling shaft, a sliding block is connected in the limiting groove in a sliding mode and fixedly connected with the pull rope, and the top of the sliding block penetrates through the inner wall of the bottom of the portal frame.
The invention has further technical improvements that: the rotating mechanism comprises a bottom plate, a rotary table, a pin shaft and a pulley, wherein the bottom plate is arranged above the limiting groove, the bottom of the bottom plate is fixedly connected with the top of the sliding block, the pin shaft is fixed at the top of the bottom plate, the rotary table is arranged above the bottom plate, and the rotary table is rotatably connected with the pin shaft through a bearing;
the top of the rotary table is provided with grooves at equal intervals, pulleys are arranged in the grooves, and two ends of each pulley are rotatably connected with the rotary table through bearings.
The invention has further technical improvements that: the connecting rod and the pull rod are telescopic rods.
The invention has further technical improvements that: the lifting mechanism is specifically a lifting machine.
Compared with the prior art, the invention has the beneficial effects that:
1. when the gantry type bridge girder erection device is used, the lifting mechanism starts to work to drive the gantry to move upwards, so that the connecting rod arranged on the outer side of the upright and the pull rod arranged on the inner side of the upright are contracted, the position of the gantry is changed, the bridge girder erection device can adjust the position of the bridge girder in the longitudinal direction of the upright through the arrangement of the gantry, the structure is simple, the operation is convenient, the horizontal height of the bridge girder erection device can be adjusted conveniently, the time is saved, and the working efficiency is improved.
2. The servo motor drives the driving roller to rotate, the driving roller and the driven roller are connected through the stay cord in a transmission way, so the servo motor drives the stay cord to move in the limiting groove, the slide block slides in the limiting groove along with the movement of the stay cord to change the position of the bottom plate, the turntable is rotationally connected with a pin shaft fixed at the top of the bottom plate through a bearing, so the angle of the turntable can be adjusted at the top of the bottom plate, the bridging girder is placed at the top of the turntable and then is contacted with the roller arranged in the groove, so the bridging girder can slide at the top of the turntable, the rotating angle and the position of the bridging girder can be adjusted, the driving roller and the driven roller are driven to rotate through the servo motor, the stay cord drives the slide block to slide in the limiting groove, the slide block drives the bottom plate to move, the turntable on the bottom plate can adjust the angle according to actual, need not to dismantle, operation such as reinstallation has realized the continuity operation under the multiple operating mode, and at the curve section that curvature radius is greater than m, girder mechanism can once only adjust and target in place, has saved a large amount of time, very big improvement efficiency.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic view of the overall connection structure of the present invention;
FIG. 2 is a schematic view of a portal frame connection structure according to the present invention;
FIG. 3 is a schematic structural view of a rotating mechanism according to the present invention;
fig. 4 is a schematic view of the internal structure of the power pulley mechanism of the present invention;
FIG. 5 is a schematic view of a connection structure between a servo motor and a driving roller according to the present invention.
In the figure: 1. a load-bearing platform; 2. a lifting mechanism; 3. a pull rod; 4. a connecting rod; 5. a column; 6. a gantry; 7. a rotation mechanism; 8. a powered pulley mechanism; 9. a base plate; 10. a turntable; 11. a pin shaft; 12. a groove; 13. a pulley; 14. a driving roller; 15. a servo motor; 16. pulling a rope; 17. a slider; 18. a limiting groove; 19. a driven roller; 20. a support leg; 21. a main beam mechanism; 22. provided is a bridge pier.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, a connecting structure of a main beam and a support leg of a bridge girder erection machine comprises a bearing platform 1, a lifting mechanism 2, a pull rod 3, a connecting rod 4, an upright post 5, a portal frame 6, a rotating mechanism 7, a power pulley mechanism 8, a support leg 20, a main beam mechanism 21 and a pier 22, wherein the support leg 20 and the pier 22 are arranged at two ends of the main beam mechanism 21, the support leg 20 is fixedly connected with the pier 22, and the upright post 5 is symmetrically arranged at one end of the main beam mechanism 21;
a bearing platform 1 is arranged at one end of the main beam mechanism 21, the bottom of the bearing platform 1 is fixedly connected with the top ends of two symmetrically arranged upright posts 5, and a lifting mechanism 2 is fixed at the top of the bearing platform 1;
a portal frame 6 is arranged below the bearing platform 1, the portal frame 6 is positioned between two symmetrically arranged upright posts 5, the portal frame 6 is connected between the two symmetrically arranged upright posts 5 in a sliding manner, the output end of the lifting mechanism 2 is fixedly connected with the top of the portal frame 6, connecting rods 4 are symmetrically fixed at the bottom of the bearing platform 1, the bottom ends of the connecting rods 4 are fixedly connected with the portal frame 6, the two symmetrically arranged connecting rods 4 are positioned at the outer sides of the two symmetrically arranged upright posts 5, one sides of the upright posts 5, which are far away from the connecting rods 4, are rotatably connected with pull rods 3 through hinges, and one ends of the pull rods 3, which are far away from the upright posts 5, are rotatably connected with the top of the portal frame 6;
limiting groove 18 has been seted up to 6 bottom inner walls of portal frame, install power pulley mechanism 8 in the limiting groove 18, power pulley mechanism 8 top is provided with rotary mechanism 7, and rotary mechanism 7 is located directly over limiting groove 18.
The power pulley mechanism 8 consists of a driving roller 14, a servo motor 15, a pull rope 16, a sliding block 17 and a driven roller 19, the driving roller 14 and the driven roller 19 are symmetrically arranged in the limiting groove 18, the driving roller 14 and the driven roller 19 are rotatably connected with the portal frame 6 through bearings, and the driving roller 14 and the driven roller 19 are in transmission connection through the pull rope 16;
the automatic adjusting device is characterized in that a servo motor 15 is fixed in the limiting groove 18, the end portion of an output shaft of the servo motor 15 is fixedly connected with one end of the driving roller 14, a sliding block 17 is connected in the limiting groove 18 in a sliding mode, the sliding block 17 is fixedly connected with a pull rope 16, the top of the sliding block 17 penetrates through the inner wall of the bottom of the portal frame 6, and the movement of the bottom plate 9 is adjusted through the arrangement of the sliding block 17 and the pull rope 16.
The rotating mechanism 7 comprises a bottom plate 9, a rotary table 10, a pin shaft 11 and a pulley 13, the bottom plate 9 is arranged above the limiting groove 18, the bottom of the bottom plate 9 is fixedly connected with the top of a sliding block 17, the pin shaft 11 is fixed at the top of the bottom plate 9, the rotary table 10 is arranged above the bottom plate 9, and the rotary table 10 is rotatably connected with the pin shaft 11 through a bearing;
The lifting mechanism 2 is specifically a lifting machine, and the height of the portal frame 6 can be conveniently adjusted through the arrangement of the lifting machine.
The working principle is as follows: when the invention is used, firstly, the lifting mechanism 2 starts to work to drive the portal frame 6 to move upwards, so that the connecting rod 4 arranged at the outer side of the upright post 5 and the pull rod 3 arranged at the inner side of the upright post 5 are contracted, so that the position of the portal frame 6 is changed, the servo motor 15 drives the driving roller 14 to rotate, because the driving roller 14 is in transmission connection with the driven roller 19 through the pull rope 16, the servo motor 15 drives the pull rope 16 to move in the limit groove 18, the sliding block 17 slides in the limit groove 18 along with the movement of the pull rope 16, the position of the bottom plate 9 is changed, because the rotary table 10 is rotationally connected with a pin shaft 11 fixed on the top of the bottom plate 9 through a bearing, the rotary table 10 can adjust the angle on the top of the bottom plate 9, the bridging girder is placed on the top of the rotary table 10 and then contacts with the roller arranged in the groove 12, so that the bridging girder can slide on the top of the turntable 10, and the rotation angle and the position of the bridging girder can be adjusted.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (5)
1. The utility model provides a connection structure of frame bridge crane girder and landing leg which characterized in that: the device comprises a bearing platform (1), a lifting mechanism (2), a pull rod (3), a connecting rod (4), an upright post (5), a portal frame (6), a rotating mechanism (7), a power pulley mechanism (8), support legs (20), a main beam mechanism (21) and bridge piers (22), wherein the support legs (20) and the bridge piers (22) are arranged at two ends of the main beam mechanism (21), the support legs (20) are fixedly connected with the bridge piers (22), and the upright post (5) is symmetrically arranged at one end of the main beam mechanism (21);
a bearing platform (1) is arranged at one end of the main beam mechanism (21), the bottom of the bearing platform (1) is fixedly connected with the top ends of two symmetrically arranged upright posts (5), and a lifting mechanism (2) is fixed at the top of the bearing platform (1);
a portal frame (6) is arranged below the bearing platform (1), the portal frame (6) is located between two symmetrically arranged columns (5), the portal frame (6) is connected between the two symmetrically arranged columns (5) in a sliding manner, connecting rods (4) are symmetrically fixed at the bottom of the bearing platform (1), the bottom ends of the connecting rods (4) are fixedly connected with the portal frame (6), the two symmetrically arranged connecting rods (4) are located at the outer sides of the two symmetrically arranged columns (5), one sides of the columns (5) far away from the connecting rods (4) are rotatably connected with pull rods (3) through hinges, and one ends of the pull rods (3) far away from the columns (5) are rotatably connected with the top of the portal frame (6) through hinges;
limiting groove (18) have been seted up to portal frame (6) bottom inner wall, install power pulley mechanism (8) in limiting groove (18), power pulley mechanism (8) top is provided with rotary mechanism (7), and rotary mechanism (7) are located directly over limiting groove (18).
2. The connecting structure of the main beam and the support legs of the bridge girder erection machine according to claim 1, wherein the power pulley mechanism (8) is composed of a driving roller (14), a servo motor (15), a pull rope (16), a slider (17) and a driven roller (19), the driving roller (14) and the driven roller (19) are symmetrically arranged in the limiting groove (18), the driving roller (14) and the driven roller (19) are rotatably connected with the portal frame (6) through bearings, and the driving roller (14) and the driven roller (19) are in transmission connection through the pull rope (16);
spacing groove (18) internal fixation has servo motor (15), the output shaft tip of servo motor (15) and the one end fixed connection of initiative roller bearing (14), sliding connection has slider (17) in spacing groove (18), and slider (17) and stay cord (16) fixed connection, portal frame (6) bottom inner wall is run through at slider (17) top.
3. The connecting structure of the main beam and the support leg of the bridge girder erection machine according to claim 1, wherein the rotating mechanism (7) is composed of a bottom plate (9), a rotary table (10), a pin shaft (11) and a pulley (13), the bottom plate (9) is arranged above the limiting groove (18), the bottom of the bottom plate (9) is fixedly connected with the top of a sliding block (17), the pin shaft (11) is fixed at the top of the bottom plate (9), the rotary table (10) is arranged above the bottom plate (9), and the rotary table (10) is rotatably connected with the pin shaft (11) through a bearing;
the top of the rotary table (10) is provided with a groove (12) at equal intervals, a pulley (13) is arranged in the groove (12), and two ends of the pulley (13) are rotatably connected with the rotary table (10) through bearings.
4. A structure for connecting main beam and supporting leg of bridge erecting machine according to claim 1, wherein said connecting rod (4) and said pull rod (3) are telescopic rods.
5. A structure for connecting main beam and support leg of bridge girder erection machine according to claim 1, wherein said lifting mechanism (2) is a hoist.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910978868.1A CN110607756B (en) | 2019-10-15 | 2019-10-15 | Connecting structure of main beam and supporting legs of bridge girder erection machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910978868.1A CN110607756B (en) | 2019-10-15 | 2019-10-15 | Connecting structure of main beam and supporting legs of bridge girder erection machine |
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| Publication Number | Publication Date |
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| CN110607756A CN110607756A (en) | 2019-12-24 |
| CN110607756B true CN110607756B (en) | 2020-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910978868.1A Active CN110607756B (en) | 2019-10-15 | 2019-10-15 | Connecting structure of main beam and supporting legs of bridge girder erection machine |
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| CN113774801B (en) * | 2021-09-17 | 2023-03-14 | 宁波市政工程建设集团股份有限公司 | Construction method for quick orthogonal deflection frame beam |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2846480Y (en) * | 2006-05-19 | 2006-12-13 | 北京万桥兴业机械有限公司 | Guide beam type bridging machine for passing through tunnel |
| CN101487235A (en) * | 2009-02-18 | 2009-07-22 | 苏州大方特种车辆有限公司 | Movable supporting legs of bridge erecting machine |
| JP2012202162A (en) * | 2011-03-28 | 2012-10-22 | Sumitomo Mitsui Construction Co Ltd | Bridge crane, bridge erection method and bridge removal method |
| CN104631335A (en) * | 2015-02-05 | 2015-05-20 | 郑州新大方重工科技有限公司 | Novel large-tonnage bridge girder erection machine and construction method thereof |
| CN105735135A (en) * | 2016-03-21 | 2016-07-06 | 石家庄铁道大学 | Carrying support of single-girder bridge erecting machine |
| CN206800211U (en) * | 2017-05-24 | 2017-12-26 | 郑州新大方重工科技有限公司 | Constructed by cross for precast segmental beam the main frame structure of Bridge Erector |
-
2019
- 2019-10-15 CN CN201910978868.1A patent/CN110607756B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2846480Y (en) * | 2006-05-19 | 2006-12-13 | 北京万桥兴业机械有限公司 | Guide beam type bridging machine for passing through tunnel |
| CN101487235A (en) * | 2009-02-18 | 2009-07-22 | 苏州大方特种车辆有限公司 | Movable supporting legs of bridge erecting machine |
| JP2012202162A (en) * | 2011-03-28 | 2012-10-22 | Sumitomo Mitsui Construction Co Ltd | Bridge crane, bridge erection method and bridge removal method |
| CN104631335A (en) * | 2015-02-05 | 2015-05-20 | 郑州新大方重工科技有限公司 | Novel large-tonnage bridge girder erection machine and construction method thereof |
| CN105735135A (en) * | 2016-03-21 | 2016-07-06 | 石家庄铁道大学 | Carrying support of single-girder bridge erecting machine |
| CN206800211U (en) * | 2017-05-24 | 2017-12-26 | 郑州新大方重工科技有限公司 | Constructed by cross for precast segmental beam the main frame structure of Bridge Erector |
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