CN213114323U - Bridge girder erection machine over-span device based on curve track and large longitudinal slope environment - Google Patents
Bridge girder erection machine over-span device based on curve track and large longitudinal slope environment Download PDFInfo
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- CN213114323U CN213114323U CN202021214495.5U CN202021214495U CN213114323U CN 213114323 U CN213114323 U CN 213114323U CN 202021214495 U CN202021214495 U CN 202021214495U CN 213114323 U CN213114323 U CN 213114323U
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Abstract
The utility model discloses a device for bridge girder erection machine crossing based on curve track and large longitudinal slope environment, the bridge girder erection machine linearly moves along the longitudinal bridge direction of bridges with curve track and different heights, the bottom of the main girder of the bridge girder erection machine and the beam body connecting position of the main girder are both provided with a plurality of supporting nodes; the bottom of the main beam is also provided with a plurality of temporary switching devices, and the temporary switching devices can perform position conversion along the length direction of the bottom of the main beam; the rotary supporting devices are respectively arranged at the supporting nodes and can enable the main beam to displace along the transverse bridge direction; and the plurality of jacking devices are arranged at the bottom of the main beam and used for vertically adjusting the height of the main beam. The technical scheme of this application has strong adaptability and crosses and stride efficient technical field, but wide application in bridge construction equipment technical field.
Description
Technical Field
The utility model relates to a bridge construction equipment technical field. More specifically, the utility model relates to a bridge girder erection machine crosses and strides and uses device based on curve orbit and big longitudinal gradient environment down.
Background
The Malaysia SUKE CA4 highway project is located on Malaysia capital Jilong slope, the upper structure of the bridge is mainly designed by prefabricated small box girders, the maximum design length of the small box girders is 42m, and the highway is erected by a walking type highway bridge girder erection machine.
In view of the current situation of box girder mounted bridge girder erection machines at home and abroad, the current highway bridge girder erection machines in China can be divided into two categories of guide girder type bridge girder erection equipment and special bridge girder erection machines, and the performances are different. The conditions of a relatively mature erection line at home and abroad are that a longitudinal slope is within 3 percent, a transverse slope is within 5 percent, the minimum curve radius is 350m, and under the conditions, the bridge girder erection machine has small turning range, short supporting legs, good stability and large space for transporting and feeding the girder. The Malaysia SUKE CA4 project is limited by terrain and geographical position, the maximum longitudinal slope of the main line and ramp bridge part is designed to reach 7%, the maximum transverse slope reaches 6%, and the weight of the maximum small box girder is about 180 t. The part of the positions are in a small-radius curve state, the minimum curve radius of a route to be erected by the bridge girder erection machine is 160m, the girder erection condition is extremely harsh, and the traditional bridge girder erection machine over-span construction device cannot meet the bridge girder erection machine over-span construction environment with the height difference exceeding the conventional gradient and the curve track exceeding the conventional curve degree.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a strong adaptability and cross stride efficient bridge girder erection machine based on under curve orbit and the big longitudinal slope environment and cross and stride and use device.
To achieve these objects and other advantages in accordance with the present invention, there is provided a device for an overpass based on a curved trajectory and under a large longitudinal slope environment, the bridge erecting machine linearly moving along a longitudinal bridge direction of a bridge having the curved trajectory and different heights, the bottom of a main beam of the bridge erecting machine being provided with a plurality of support nodes, the plurality of support nodes being respectively provided with a pair of front legs, a pair of middle legs and a pair of tail legs;
the bottom of the main beam is also provided with a plurality of temporary switching devices, and the temporary switching devices can perform position conversion along the length direction of the bottom of the main beam;
the rotary supporting devices are respectively arranged at the supporting nodes and can enable the main beam to displace along the transverse bridge direction;
and the plurality of jacking devices are arranged at the bottom of the main beam and used for vertically adjusting the height of the main beam.
Preferably, a plurality of the temporary reversing devices at least comprise a pair of temporary middle support legs, and the temporary middle support legs are arranged between the front support legs and the middle support legs.
Preferably, each of the plurality of rotary supporting devices comprises a first hinged support and a second hinged support;
first hinged bases are respectively arranged between the front supporting leg and the main beam and between the middle supporting leg and the main beam;
and second hinged supports are arranged between the upper cross beam and the lower cross beam of the front supporting leg.
Preferably, each of the plurality of rotary supporting devices comprises a third hinged support and a fourth hinged support;
the bottom of the ingot beam of the middle supporting leg is provided with a transverse moving mechanism, and a third hinged support is arranged between the ingot beam and the transverse moving mechanism;
the top of girder is provided with the overhead traveling crane along indulging the bridge to the direction slip and indulges the mechanism that moves to and the overhead traveling crane indulges and is provided with a fourth free bearing between the entablature and the bottom end rail of moving the mechanism.
Preferably, a plurality of the jacking devices are all hydraulic oil cylinder systems.
Preferably, the hydraulic oil cylinder system is arranged on the height sections of the front supporting leg and the middle supporting leg and used for adjusting the jacking strokes of the middle supporting leg and the front supporting leg.
Preferably, the section of the front supporting leg for adjusting the jacking stroke through the hydraulic oil cylinder system is also provided with a climbing frame.
The utility model discloses at least, include following beneficial effect:
1. in the bridge girder erection machine over-span technology in the prior art, the front support leg, the middle support leg and the tail support leg are continuously switched, so that the complete machine displacement of the bridge girder erection machine is realized.
2. The hinged support is additionally arranged at the bottom of a main beam of the bridge girder erection machine so as to increase the single linear adjustment amplitude of the bridge girder erection machine.
3. The jacking stroke and the hydraulic system of the front middle supporting leg are increased, and the conversion frequency of stress of each supporting leg under a high posture is reduced, so that the safety risk of crossing a large longitudinal slope is reduced.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is an overall structure diagram of a bridge girder erection machine over-span device based on a curved track and a large longitudinal slope environment;
fig. 2 is a schematic structural view of a middle leg of the present invention;
FIG. 3 is a schematic structural view of the front leg of the present invention;
the specification reference numbers indicate: 1. girder, 2, preceding landing leg, 3, well landing leg, 4, tail landing leg, 5, interim landing leg, 6, the overhead traveling crane longitudinal movement mechanism, 7, first free bearing, 8, second free bearing, 9, hydraulic cylinder system, 10, third free bearing, 11, ingot beam, 12, sideslip mechanism.
Detailed Description
The present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.
In the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
As shown in fig. 1-3, a device for a bridge girder erection machine to stride over a bridge under a curved track and a large longitudinal slope environment, the bridge girder erection machine linearly moves along a longitudinal bridge direction of a bridge with the curved track and different heights, a plurality of support nodes are arranged at the bottom of a main girder 1 of the bridge girder erection machine, and a pair of front support legs 2, a pair of middle support legs 3 and a pair of tail support legs 4 are respectively arranged at the plurality of support nodes;
the bottom of the main beam 1 is also provided with a plurality of temporary switching devices, and the temporary switching devices can perform position conversion along the length direction of the bottom of the main beam 1;
the rotary supporting devices are respectively arranged at the supporting nodes and can enable the main beam 1 to displace along the transverse bridge direction;
and the plurality of jacking devices are arranged at the bottom of the main beam 1 and are used for vertically adjusting the height of the main beam 1.
In the technical scheme, a pair of temporary middle support legs 5 are arranged between a front support leg 2 and a middle support leg 3 of the bridge girder erection machine and used for vertical support of different sections in the length direction of the bridge girder erection machine when the bridge girder erection machine displaces along the longitudinal bridge direction, the height of the temporary middle support legs 5 can be adjusted and can be detachably arranged at the bottom of a main girder 1, and the positions of the temporary middle support legs 5 can be synchronously replaced and adjusted according to the displacement position of the bridge girder erection machine;
the method is characterized in that a plurality of hinged supports are arranged at the bottom of the main beam 1 and the beam body connecting structure of the main beam 1, the bridge girder erection machine achieves curve over-span required angle position adjustment of the whole bridge girder erection machine by utilizing the rotation adjusting angle of the hinged supports in the over-span construction of a curve environment, and the jacking stroke of the front supporting leg 2 and the middle supporting leg 3 of the bridge girder erection machine is additionally arranged for adjusting the height stroke of the whole bridge girder erection machine under the over-span construction environment with height difference.
In another technical solution, the plurality of temporary reversing devices at least comprise a pair of temporary middle support legs 5, and the temporary middle support legs 5 are arranged between the front support legs 2 and the middle support legs 3.
In another technical scheme, each of the plurality of rotary supporting devices comprises a first hinged support 7 and a second hinged support 8;
a first hinge seat 7 is respectively arranged between the front supporting leg 2 and the main beam 1 and between the middle supporting leg 3 and the main beam 1;
a second hinged support 8 is arranged between the upper cross beam and the lower cross beam of the front supporting leg 2;
in another technical solution, each of the plurality of rotary supporting devices includes a third hinge base 10 and a fourth hinge base;
the bottom of the ingot beam 11 of the middle supporting leg 3 is provided with a transverse moving mechanism 12, and a third hinged support 10 is arranged between the ingot beam 11 and the transverse moving mechanism 12;
the top of girder 1 is provided with the overhead traveling crane along indulging the bridge to the direction slip and indulges moving mechanism 6 to and the overhead traveling crane indulges and is provided with a fourth free bearing between moving mechanism 6's entablature and the bottom end rail.
In the technical scheme, a fifth hinged support is arranged at the joint of the transverse connection of the bridge girder erection machine and the guide beam, and the first hinged support 7, the second hinged support 8, the third hinged support 10, the fourth hinged support and the fifth hinged support synchronously rotate in a matched manner during curve spanning construction.
In another technical scheme, a plurality of the jacking devices are all hydraulic oil cylinder systems 9.
In another technical scheme, the hydraulic oil cylinder system 9 is arranged on the height sections of the front support leg 2 and the middle support leg 3 and is used for adjusting the jacking strokes of the middle support leg 3 and the front support leg 2.
In another technical scheme, the section of the front supporting leg 2 for adjusting the jacking stroke through the hydraulic oil cylinder system 9 is also provided with a climbing frame.
The first embodiment is as follows:
adding a pair of temporary middle support legs 5
The minimum curve radius that the original design of bridge girder erection machine can pass is only 200m, and the forward movement of the supporting legs is realized by switching the tail supporting legs 4 and the middle supporting legs 3 every 1-2m, so that the middle supporting legs 3 and the tail supporting legs 4 need to be switched ceaselessly when the bridge girder erection machine strides, the switching times are many, the physical loss of workers is large, and the working efficiency is low. And the working condition that the bridge deck is 8.9m but the curve radius is only 160m exists on site, and exceeds the curve construction environment designed by the bridge crane (the steel pipe pile support is planned to be erected to assist the bridge crane to cross). In the technical scheme of this application, increase one set of interim well landing leg 5, make the temporary well landing leg 5 and tail landing leg 4 can misplace the support in tandem when the small curve strides, reduce the number of times that 3 rearranges of well landing leg to the bridge girder erection machine auxiliary stand's of curve construction setting up has been avoided.
(II) increasing the hinge base at the key position
Arranging hinged supports at key positions of the following bridging machines:
1. a rotary hinge is arranged below the reverse roller set mechanism of the front supporting leg 2, and a rotary hinge is arranged between the upper and lower cross beams;
2. a rotary hinge is arranged below the reverse roller set mechanism of the middle supporting leg 3, and a rotary hinge is arranged between the ingot beam 11 and the cross beam of the transverse moving mechanism 12;
3. the upper and lower beams of the crown block longitudinal movement mechanism 6 are provided with a rotary hinge;
4. a rotary hinge is arranged at the joint of the transverse link and the guide beam.
When the bridge girder erection machine curve section crosses over, and the front and middle support legs 3 move transversely in opposite directions, the lower cross beam of the front support leg 2 and the transverse moving mechanism 12 of the middle support leg 3 move along the transverse moving track, the upper cross beam of the front support leg 2 and the ingot beam 11 of the middle support leg 3 form reverse displacement with the mechanism below the hinged support in the transverse moving process, and the maximum adjusting amplitude can be obtained in single linear adjustment. The rotary hinged support below each supporting leg reverse roller group rotates along with the upper cross beam, and the stress formed between the beam and the supporting legs due to linear adjustment can be completely released by the hinged support.
When the front auxiliary supporting legs of the curve section bridge girder erection machine are in place on the cap beams of the front piers, the linear support of the front piers needs to be adapted, the deformation of a guide beam frame of the bridge girder erection machine needs to be adapted, and after the main beam 1 on one side is singly pushed, the front and rear transverse hinged supports of the guide beam and the hinged supports of the overhead longitudinal moving mechanism are adapted to follow the selection and the rotation so as to overcome the stress of the transverse connection and the guide beam, and the stress of the overhead longitudinal moving mechanism 6 and the guide beam.
(III) increasing the jacking strokes of the front supporting leg 2 and the middle supporting leg 3
When the bridge girder erection machine passes through the longitudinal slope, the front supporting legs 2 and the middle supporting legs 3 need to be connected or disconnected with the heightening sections to adjust the height of the whole bridge girder erection machine when the gradient of the common bridge girder erection machine exceeds 2% of the longitudinal slope, the mode has extremely low efficiency, and the safety risk of frequently switching the supporting legs and stressing is high. After intensive research, a group adds a set of climbing frame driven by an oil cylinder to the front supporting leg 2, so that the free adjustable stroke of the front supporting leg 2 reaches 3 m; and a set of hydraulic oil cylinder jacking system is added to the middle supporting leg 3, so that the free adjustable stroke of the middle supporting leg 3 reaches 1.4 m. The efficiency can be greatly improved, the force switching of each supporting leg under a high posture is reduced, the mounting and dismounting of a supporting leg heightening section are reduced, and the safety factor of large longitudinal slope crossing is increased.
While the embodiments of the invention have been described above, it is not intended to be limited to the details shown, or described, but rather to cover all modifications, which would come within the scope of the appended claims, and all changes which come within the meaning and range of equivalency of the art are therefore intended to be embraced therein.
Claims (7)
1. A device for a bridge girder erection machine to stride on the basis of a curve track and a large longitudinal slope environment is characterized in that a plurality of supporting nodes are arranged at the bottom of a main girder of the bridge girder erection machine and the connection position of a girder body of the main girder, and a pair of front supporting legs, a pair of middle supporting legs and a pair of tail supporting legs are respectively arranged at the plurality of supporting nodes;
the bottom of the main beam is also provided with a plurality of temporary switching devices, and the temporary switching devices can perform position conversion along the length direction of the bottom of the main beam;
the rotary supporting devices are respectively arranged at the supporting nodes and can enable the main beam to displace along the transverse bridge direction;
and the plurality of jacking devices are arranged at the bottom of the main beam and used for vertically adjusting the height of the main beam.
2. The device for bridging machine to stride according to claim 1, wherein the plurality of temporary inverting devices comprise at least a pair of temporary middle legs, and the temporary middle legs are disposed between the front legs and the middle legs.
3. The bridge girder erection machine overspan device in the environment of curved track and large longitudinal slope according to claim 1, wherein each of the plurality of rotary supporting devices comprises a first hinge base, a second hinge base and a third hinge base;
first hinged bases are respectively arranged between the front supporting leg and the main beam and between the middle supporting leg and the main beam;
and second hinged supports are arranged between the upper cross beam and the lower cross beam of the front supporting leg.
4. The bridge girder erection machine spanning device based on the curve track and the large longitudinal slope environment as claimed in claim 1, wherein: the plurality of rotary supporting devices comprise a third hinged support and a fourth hinged support;
the bottom of the ingot beam of the middle supporting leg is provided with a transverse moving mechanism, and a third hinged support is arranged between the ingot beam and the transverse moving mechanism;
the top of girder is provided with the overhead traveling crane along indulging the bridge to the direction slip and indulges the mechanism that moves to and the overhead traveling crane indulges and is provided with a fourth free bearing between the entablature and the bottom end rail of moving the mechanism.
5. The bridge girder erection machine spanning device based on the curve track and the large longitudinal slope environment as claimed in claim 1, wherein a plurality of the jacking devices are all hydraulic cylinder systems.
6. The bridge girder erection machine overspan device in the environment of curved track and large longitudinal slope according to claim 5, wherein the hydraulic cylinder system is arranged on the height sections of the front support leg and the middle support leg for adjusting the jacking stroke of the middle support leg and the front support leg.
7. The bridge girder erection machine spanning device based on the curved track and the large longitudinal slope environment as claimed in claim 5, wherein the section of the front supporting leg for adjusting the jacking stroke through the hydraulic oil cylinder system is further provided with a climbing frame.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021214495.5U CN213114323U (en) | 2020-06-28 | 2020-06-28 | Bridge girder erection machine over-span device based on curve track and large longitudinal slope environment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021214495.5U CN213114323U (en) | 2020-06-28 | 2020-06-28 | Bridge girder erection machine over-span device based on curve track and large longitudinal slope environment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114277688A (en) * | 2021-12-28 | 2022-04-05 | 中交路桥华南工程有限公司 | Bridge erecting machine |
| CN115807387A (en) * | 2022-11-30 | 2023-03-17 | 中交四航局第一工程有限公司 | Small-radius curve large-gradient narrow-width ramp bridge girder erection machine and construction method |
-
2020
- 2020-06-28 CN CN202021214495.5U patent/CN213114323U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN115807387A (en) * | 2022-11-30 | 2023-03-17 | 中交四航局第一工程有限公司 | Small-radius curve large-gradient narrow-width ramp bridge girder erection machine and construction method |
| CN115807387B (en) * | 2022-11-30 | 2024-01-16 | 中交四航局第一工程有限公司 | Bridge girder erection machine with small radius curve and large gradient and narrow ramp and construction method |
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