CN112144420A - Middle/front support leg structure of bridge girder erection machine suitable for erecting small-radius curve beam - Google Patents
Middle/front support leg structure of bridge girder erection machine suitable for erecting small-radius curve beam Download PDFInfo
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- CN112144420A CN112144420A CN202011018016.7A CN202011018016A CN112144420A CN 112144420 A CN112144420 A CN 112144420A CN 202011018016 A CN202011018016 A CN 202011018016A CN 112144420 A CN112144420 A CN 112144420A
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- horizontal
- bridge girder
- erection machine
- girder erection
- erecting
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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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- 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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- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to a middle/front leg structure of a bridge girder erection machine, which is suitable for erecting small-radius curve girders and comprises an upper upright column, a transverse moving wheel box and a horizontal connecting rod, wherein the upper upright column is connected with a guide beam, a horizontal rotating device is arranged between the upper upright column and the transverse moving wheel box, and the horizontal rotation between the upper upright column and the guide beam as well as between the upper upright column and the transverse moving wheel box is realized through the horizontal rotating device when the small-radius curve girders are erected. Compared with the prior art, the horizontal rotating device is used for connecting the middle/front support leg transverse moving wheel box with the upright column and the guide beam on the upper part of the middle/front support leg, and the horizontal telescopic device is added in the middle/front support leg connecting rod to connect the two sides of the support legs, so that the large-angle steering of the bridge girder erection machine is realized, and the guide beam does not generate bending moment during the steering; the method can be matched with the erection scenes of most of curve section beam pieces, can generate steering with a larger angle in an instant self-adaption way, and has high turning efficiency.
Description
Technical Field
The invention relates to the field of bridge construction equipment, in particular to a middle/front support leg structure of a bridge girder erection machine, which is suitable for erecting a small-radius curve beam.
Background
The bridge erecting machine is equipment for placing prefabricated beam pieces on prefabricated piers, belongs to the field of cranes, and mainly has the functions of lifting the beam pieces, then moving the beam pieces longitudinally in a walking mode, and putting down the beam pieces after the beam pieces are conveyed to the proper positions.
Generally, the bridge girder erection machine mainly comprises a machine arm, a first hoisting trolley, a second hoisting trolley, a front auxiliary rod, a front support leg, a middle support leg, a rear support leg, a hydraulic system, an electrical system, a diesel generator set, a safety protection monitoring system and the like.
The existing bridge girder erection machine mainly has the following problems: 1) most of the existing bridge girder erection machines are mostly suitable for erecting straight-line section beam pieces, and the erection of curved section beam pieces is difficult to carry out; 2) when the bridge girder erection machine steers at the curve section, large-angle steering is obtained through the accumulation of small-angle steering, and the steering efficiency is low. 3) When the bridge girder erection machine turns at a curve section, additional bending moment is generated on the guide beam, and the stress on the guide beam is unfavorable.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a middle/front leg structure of a bridge girder erection machine suitable for erecting small-radius curve girders.
The purpose of the invention can be realized by the following technical scheme:
the middle/front support leg structure of the bridge girder erection machine comprises an upper upright column, a transverse moving wheel box and a horizontal connecting rod, wherein the upper upright column is connected with a guide beam, a horizontal rotating device is arranged between the upper upright column and the transverse moving wheel box, and the horizontal rotating device realizes the horizontal rotation between the upper upright column and the guide beam as well as between the upper upright column and the transverse moving wheel box when the small-radius curve girder is erected.
Furthermore, a horizontal telescopic device is arranged on a horizontal connecting rod corresponding to the middle/front supporting leg structure, and the horizontal telescopic device is used for realizing the adjustment of the space adaptability of the supporting legs at two sides within a certain range.
Furthermore, the horizontal rotating device and the horizontal telescopic device respectively carry out self-adaptive adjustment on the angle and the telescopic quantity when the small-radius curved beam is erected, so that the steering adjustment of the bridge girder erection machine when the small-radius curved beam is erected is realized.
Further, the horizontal rotation device comprises a lower rotation base and an upper rotation member.
Further, the rotating base is arranged on the upper surface of the traverse wheel box;
the rotating member is arranged on the lower surface of the upper upright post.
Furthermore, the rotating base is connected with the rotating part on the upper portion through a bearing, so that relative rotation of the two portions is realized, and an included angle between the upper portion guide beam and the cross beam is changed.
Furthermore, the horizontal telescopic device is a comb-tooth-shaped expansion joint structure.
Further, the horizontal telescopic device comprises a telescopic convex edge and a telescopic concave edge which are telescopically engaged with each other.
Furthermore, the telescopic convex edge and the telescopic concave edge are respectively provided with a limiting sliding chute and a limiting convex block which are matched with each other, so that the limitation of the telescopic process is realized.
Further, the length of spacing spout is 50cm for the flexible range that horizontal telescoping device provided is 0 ~ 50 cm.
Compared with the prior art, the invention has the following technical advantages:
1) the horizontal rotating device is connected with the middle/front support leg transverse moving wheel box, the upright column and the guide beam on the upper part of the middle/front support leg, and the horizontal telescopic device is added in the middle/front support leg connecting rod to connect the two sides of the support legs, so that the large-angle steering of the bridge girder erection machine is realized, and the guide beam does not produce bending moment during steering.
2) The method can be matched with the erection scenes of most of curve section beam pieces, can generate steering with a larger angle in an instant self-adaption way, and has high turning efficiency.
Drawings
FIG. 1 is a front elevational view of a mid/front leg
FIG. 2 is a left side view of the mid/front leg
FIG. 3 is a top plan view of the mid/front leg
FIG. 4 is a perspective view of the mid/front leg
FIG. 5 is a view of the middle/front leg link horizontal telescoping device
FIG. 6 is a perspective view of the mid/front leg link horizontal telescoping device
FIG. 7 is a view of a middle/front leg horizontal swiveling apparatus
FIG. 8 is a perspective view of a mid/front leg horizontal swivel arrangement
FIG. 9 is an elevation view of a bridge erecting machine
FIG. 10 is a schematic view of a via hole of a bridge girder erection machine on a curved beam
In the figure: 1-supporting beam, 2-traversing wheel box wheel, 3-traversing wheel box, 4-horizontal rotating device, 5-upper upright post, 6-horizontal connecting rod, 7-horizontal telescopic device, 8-telescopic convex edge, 9-telescopic concave edge, 10-rotating base, 11-rotating piece, 12-front auxiliary rod, 13-front supporting leg, 14-middle supporting leg, 15-rear supporting leg, 16-upper guide beam, 17-first crane trolley, 18-second crane trolley, 19-erected beam piece, 20-front cover beam, 21-position of bridge girder erection machine after steering
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments.
The middle/front supporting leg structure of the bridge girder erection machine, which is suitable for erecting the small-radius curve girder, comprises an upper upright post 5, a traverse wheel box 3 and a horizontal connecting rod 6, wherein the upper upright post 5 is connected with a guide beam, and the structure is shown in figure 9.
A horizontal rotating device 4 is arranged between the upper upright post 5 and the traverse wheel box 3, and as shown in fig. 1 to 4, when a small-radius curve beam is erected, the horizontal rotating device 4 realizes the horizontal rotation between the upper upright post 5 and the guide beam as well as between the traverse wheel box 3. The horizontal rotating device 4 and the horizontal telescopic device 7 respectively carry out self-adaptive adjustment on the angle and the telescopic quantity when the small-radius curved beam is erected, and steering adjustment of the bridge girder erection machine when the small-radius curved beam is erected is realized. The horizontal rotation device 4 comprises a lower rotation base 10 and an upper rotation member 11, and the three-dimensional structure is shown in fig. 8. The rotating base 10 is arranged on the upper surface of the traverse wheel box 3; the rotating member 11 is provided on the lower surface of the upper column 5. The rotary base 10 and the upper rotary part 11 are connected through a bearing, for example, the rotary base is respectively connected with an outer ring and an inner ring of the bearing, so that the relative rotation of the two parts is realized, and the included angle between the upper guide beam and the cross beam is changed.
The horizontal connecting rod 6 corresponding to the middle/front supporting leg structure is provided with a horizontal telescopic device 7, referring to fig. 1, 5 and 6, and the horizontal telescopic device 7 is used for realizing the distance adaptability adjustment of the supporting legs at two sides in a certain range. The horizontal expansion device 7 is a comb-tooth expansion joint structure. The horizontal telescopic device 7 comprises a telescopic convex edge 8 and a telescopic concave edge 9 which are telescopically engaged with each other. The telescopic convex edge 8 and the telescopic concave edge 9 are respectively provided with a limiting sliding chute and a limiting convex block which are matched with each other, so that the limitation of the telescopic process is realized.
The guide beam 16 shown in fig. 9 is fixed with the front auxiliary rod 12, and can slide along the longitudinal direction of the bridge girder erection machine relative to the middle supporting leg 14 and the front supporting leg 13 shown in fig. 9, the middle/front supporting legs are connected through the horizontal connecting rod 6 shown in fig. 1, and the distance between the guide beams at both sides is kept constant all the time.
The front auxiliary rod 12 of the bridge girder erection machine shown in fig. 9 passes through the hole to the front cover beam 20 shown in fig. 10, the front auxiliary rod 12 shown in fig. 9 and the rear support leg 15 shown in fig. 9 are folded, and the front support leg 13 shown in fig. 9 and the middle support leg 14 shown in fig. 9 are jointly supported.
The electric system and the hydraulic system control the supporting legs 14 shown in fig. 9 to move transversely on the supporting beam 1 shown in fig. 1 in the outward arc direction, at this time, the distance between the two guide beams 16 shown in fig. 9 is kept unchanged, the position of the supporting beam 1 shown in fig. 1 below is kept unchanged, the distance between the supporting legs on the guide beams is increased, as shown in the position 21 of the bridge girder erection machine after turning to fig. 10, the distance is increased by horizontally extending and contracting the supporting leg horizontal extending and contracting device 7 in fig. 1, the specific implementation mode is realized by the relative extension and contraction of the convex edge 8 and the concave edge 9 of the horizontal extending and contracting device shown in fig. 5, and the extension.
During steering, the upper guide beam 16 shown in fig. 10 and the cross beam 1 shown in fig. 10 are changed from orthogonal to oblique, and the change of the angle is realized by the horizontal rotating device 4 shown in fig. 1. The horizontal rotation between the upper upright post 5 and the upper guide beam shown in figure 1 and the traverse wheel box 3 shown in figure 1 is realized through a horizontal rotation device;
the transverse movement and rotation of the middle support leg drive the front support leg to realize the same change, and the change is similar to that of the middle support leg, and the difference is that the transverse movement distance of the front support leg is smaller.
And completing the steering on the small-radius curve beam section. The steering is not restricted, and bending moment is not generated on the guide beam.
The embodiments described above are described to facilitate an understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
Claims (10)
1. The middle/front leg structure of the bridge girder erection machine is characterized by comprising an upper upright post (5), a transverse moving wheel box (3) and a horizontal connecting rod (6), wherein the upper upright post (5) is connected with a guide beam, a horizontal rotating device (4) is arranged between the upper upright post (5) and the transverse moving wheel box (3), and the horizontal rotation between the upper upright post (5) and the guide beam and between the transverse moving wheel box (3) is realized through the horizontal rotating device (4) when the small-radius curve girder is erected.
2. The bridge girder erection machine middle/front supporting leg structure suitable for erecting the small-radius curved girder according to claim 1, wherein a horizontal telescopic device (7) is arranged on a horizontal connecting rod (6) corresponding to the middle/front supporting leg structure, and the horizontal telescopic device (7) is used for realizing the distance adaptability adjustment of the supporting legs at two sides within a certain range.
3. The middle/front leg structure of bridge girder erection machine suitable for erecting small radius curved girder according to claim 2, wherein the horizontal rotating device (4) and the horizontal telescoping device (7) respectively perform adaptive adjustment of angle and telescoping amount when erecting small radius curved girder, so as to realize steering adjustment of bridge girder erection machine when erecting small radius curved girder.
4. A bridge girder erection machine middle/front leg structure suitable for erecting a small-radius curved beam as claimed in claim 1, wherein the horizontal swivel means (4) comprises a lower swivel base (10) and an upper swivel (11).
5. A bridge girder erection machine middle/front leg structure suitable for erecting small-radius curved girders as claimed in claim 4, wherein said rotating base (10) is provided on the upper surface of said traverse wheel box (3);
the rotating piece (11) is arranged on the lower surface of the upper upright post (5).
6. A bridge girder erection machine middle/front leg structure suitable for erecting small radius curve girders according to claim 4, wherein the rotating base (10) and the upper rotating member (11) are connected through a bearing to realize the relative rotation of the two parts, thereby changing the included angle between the upper guide beam and the cross beam.
7. The middle/front leg structure of bridge girder erection machine suitable for erecting small radius curved beam as claimed in claim 2, wherein said horizontal expansion device (7) is a comb-tooth type expansion joint structure.
8. A bridge girder erection machine middle/front leg structure suitable for erecting a small-radius curved beam as claimed in claim 7, wherein said horizontal telescopic means (7) comprises a telescopic male edge (8) and a telescopic female edge (9) telescopically engaged with each other.
9. The middle/front leg structure of bridge girder erection machine suitable for erecting small radius curved beam as claimed in claim 8, wherein said telescopic convex edge (8) and telescopic concave edge (9) are respectively provided with a limit sliding groove and a limit projection which are matched with each other, thereby realizing the limit of the telescopic process.
10. The middle/front leg structure of bridge girder erection machine suitable for erecting small radius curved beam as claimed in claim 9, wherein the length of said limit chute is 50cm, so that the extension range provided by the horizontal extension device (7) is 0-50 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011018016.7A CN112144420B (en) | 2020-09-24 | 2020-09-24 | Middle/front support leg structure of bridge girder erection machine suitable for erecting small-radius curve beam |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011018016.7A CN112144420B (en) | 2020-09-24 | 2020-09-24 | Middle/front support leg structure of bridge girder erection machine suitable for erecting small-radius curve beam |
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| Publication Number | Publication Date |
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| CN112144420A true CN112144420A (en) | 2020-12-29 |
| CN112144420B CN112144420B (en) | 2021-07-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011018016.7A Active CN112144420B (en) | 2020-09-24 | 2020-09-24 | Middle/front support leg structure of bridge girder erection machine suitable for erecting small-radius curve beam |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114150589A (en) * | 2021-12-17 | 2022-03-08 | 中铁高新工业股份有限公司 | Rotary support applied to curved beam erecting and bridge erecting machine |
| CN114277688A (en) * | 2021-12-28 | 2022-04-05 | 中交路桥华南工程有限公司 | Bridge erecting machine |
Citations (7)
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| JP2000257022A (en) * | 1999-03-08 | 2000-09-19 | Sanshin Kogyo Kk | Erection device for bridge |
| JP2010236260A (en) * | 2009-03-31 | 2010-10-21 | Taisei Corp | Track girder for saddle-type monorail, box girder, and construction method for box girder |
| CN203530847U (en) * | 2013-09-22 | 2014-04-09 | 郑州江河重工有限公司 | Bridge erecting machine capable of erecting narrow small-curvature-radius highway ramp bridges |
| CN105421243A (en) * | 2015-11-27 | 2016-03-23 | 河南新科起重机股份有限公司 | Front supporting leg structure of novel highway bridging hoisting equipment |
| CN106480828A (en) * | 2016-12-16 | 2017-03-08 | 四川公路桥梁建设集团有限公司 | Small-radius curve T-shaped beam bridge erecting machine and rotary installation construction method |
| CN207812303U (en) * | 2017-12-19 | 2018-09-04 | 孔锴 | Rest device in Bridge Erector |
| CN109763430A (en) * | 2019-01-31 | 2019-05-17 | 浙江中建路桥设备有限公司 | A kind of Bridge Erector that curve via holes are set a roof beam in place and its application method |
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2020
- 2020-09-24 CN CN202011018016.7A patent/CN112144420B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000257022A (en) * | 1999-03-08 | 2000-09-19 | Sanshin Kogyo Kk | Erection device for bridge |
| JP2010236260A (en) * | 2009-03-31 | 2010-10-21 | Taisei Corp | Track girder for saddle-type monorail, box girder, and construction method for box girder |
| CN203530847U (en) * | 2013-09-22 | 2014-04-09 | 郑州江河重工有限公司 | Bridge erecting machine capable of erecting narrow small-curvature-radius highway ramp bridges |
| CN105421243A (en) * | 2015-11-27 | 2016-03-23 | 河南新科起重机股份有限公司 | Front supporting leg structure of novel highway bridging hoisting equipment |
| CN106480828A (en) * | 2016-12-16 | 2017-03-08 | 四川公路桥梁建设集团有限公司 | Small-radius curve T-shaped beam bridge erecting machine and rotary installation construction method |
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| CN109763430A (en) * | 2019-01-31 | 2019-05-17 | 浙江中建路桥设备有限公司 | A kind of Bridge Erector that curve via holes are set a roof beam in place and its application method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114150589A (en) * | 2021-12-17 | 2022-03-08 | 中铁高新工业股份有限公司 | Rotary support applied to curved beam erecting and bridge erecting machine |
| CN114277688A (en) * | 2021-12-28 | 2022-04-05 | 中交路桥华南工程有限公司 | Bridge erecting machine |
| CN114277688B (en) * | 2021-12-28 | 2024-02-02 | 中交路桥华南工程有限公司 | Bridge girder erection machine |
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| Publication number | Publication date |
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| CN112144420B (en) | 2021-07-20 |
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