CN109594476B - Beam section sliding device suitable for curved beam - Google Patents
Beam section sliding device suitable for curved beam Download PDFInfo
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- CN109594476B CN109594476B CN201811427336.0A CN201811427336A CN109594476B CN 109594476 B CN109594476 B CN 109594476B CN 201811427336 A CN201811427336 A CN 201811427336A CN 109594476 B CN109594476 B CN 109594476B
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- sliding shoe
- sliding
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- jack
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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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- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to a beam section sliding device suitable for a curved beam, which comprises an upper bearing platform, a jacking jack, a middle supporting platform and a lower sliding shoe which are sequentially arranged from top to bottom, wherein the middle supporting platform and the lower sliding shoe are matched through a spherical surface and can relatively rotate in a vertical plane, a sliding shoe fixing frame capable of rotating in a horizontal plane is further arranged at the rear end of the lower sliding shoe, the beam section sliding device further comprises a pushing jack and a tail sliding shoe, and two ends of the pushing jack are respectively and rotatably connected with the sliding shoe fixing frame and the tail sliding shoe. Compared with the prior art, the invention ensures that the whole device can be suitable for automatic sliding construction under various working conditions such as variable beam height, flat curve and the like through the arrangement of the two steering adjusting mechanisms, and the sliding flexibility and precision are improved.
Description
Technical Field
The invention belongs to the technical field of bridge construction, and relates to a beam section sliding device suitable for a curved beam.
Background
The existing curve sliding method construction mostly adopts traction type construction, sliding trolleys on an inner rail and an outer rail are respectively drawn by a winch, and construction control is carried out by a computer numerical control system. The Zhongxing bridge adopts a sliding shoe matched with a three-way jack to carry out sliding assembly construction, and a hydraulic synchronous sliding system is utilized to complete sliding. The beam section is lifted to the sliding starting point and then is slid to the assembling position by the jack. This technique can make the roof beam position put quite high accuracy, but its operating mode that is suitable for is comparatively single, only is applicable to the construction of straight beam bridge, can't realize the rotation in the sliding plane, and this precision that makes original system of sliding be used for bent beam construction is difficult to control. The following problems mainly exist in the traction type construction scheme: 1) the drawing precision is difficult to control: theoretically, the control can be carried out through a computer, and in practice, the problem of great precision exists when the winch pulls. 2) The construction equipment is complicated: the computer numerical control technology, the winch, the inhaul cable, the trolley or the sliding shoe are used for sliding, so that more equipment is needed, the construction procedure is complicated, and the application and the transfer are inconvenient. 3) Cannot adapt to beam height variations: the trolley or the horizontal sliding shoe is arranged at the bottom of the beam to slide, and cannot adapt to the change of the height of the beam.
In the same way, the push-type hydraulic sliding construction has the following problems: 1) the applicable working condition is single: the sliding shoes and the jacks cannot rotate relatively, and the sliding shoes are only suitable for construction of linear bridges and cannot be suitable for construction of plane curved beams. 2) The jack is in large quantity, and the maintenance cost is high: the existing scheme uses a three-way jack for construction control, and has the problems of oil leakage and the like, and the maintenance cost is high.
Disclosure of Invention
The present invention aims to overcome the defects of the prior art and provide a beam section sliding device suitable for a curved beam.
The purpose of the invention can be realized by the following technical scheme:
the utility model provides a roof beam section displacement device suitable for bent beam, includes upper portion cushion cap, jacking jack, middle part brace table and the lower part piston shoes that from the top down arranged in proper order, can rotate relatively in vertical plane through sphere cooperation and both between middle part brace table and the lower part piston shoes, still is provided with the piston shoes mount that can rotate in the horizontal plane in the rear end of lower part piston shoes, roof beam section displacement device still includes jack and tail piston shoes, and wherein, the both ends of jack are rotated respectively and are connected piston shoes mount and tail piston shoes.
Furthermore, a fine-tuning spherical steering wheel with a spherical curved surface at the top is installed on the lower sliding shoe, a bowl-shaped groove matched with the top of the fine-tuning spherical steering wheel is processed at the lower end of the middle supporting table, and the middle supporting table is buckled on the lower sliding shoe to realize the spherical matching of the middle supporting table and the lower sliding shoe.
Furthermore, the rear end of the lower sliding shoe is also provided with a sliding shoe steering wheel which can rotate in the horizontal plane, and the sliding shoe fixing frame is fixedly arranged on the sliding shoe steering wheel.
Furthermore, the pushing jack is respectively connected with the slipper fixing frame and the tail slipper in a rotating mode through a front jack pin shaft and a tail jack pin shaft which rotate on a vertical plane.
Furthermore, the bottoms of the lower sliding shoe and the tail sliding shoe are respectively provided with a front sliding shoe guide block and a tail sliding shoe guide block which can slide on the sliding track.
Furthermore, the sliding track is a double-track type guide rail, and the front sliding shoe guide block and the tail sliding shoe guide block are both wedge-shaped structures embedded between the double tracks.
Furthermore, the front sliding shoe guide block and the tail sliding shoe guide block are respectively fixed at the bottoms of the lower sliding shoe and the tail sliding shoe through welding.
Further, the beam section sliding device further comprises a fastener for fixing the tail sliding shoe on the sliding track.
Furthermore, the fastener is a stop block which is detachably fixed on the sliding rail and used for abutting against the rear end of the tail sliding shoe.
Furthermore, the pushing jack and the jacking jack are both hydraulic jacks controlled by a computer.
According to the invention, the lower sliding shoe and the tail sliding shoe are in direct contact with the steel rail, the guide block is arranged at the bottom of the steel rail, so that the steel rail can be adaptive to a curved rail conveniently, and the guide block is connected with the sliding shoe through welding. The slipper steering wheel realizes flexible sliding of the device on a curve. The fine-tuning spherical steering wheel is used for fine tuning a bearing platform under the conditions of superelevation, beam height variation and the like so that the top surface of the beam is always kept approximately horizontal, and the structure of the fine-tuning spherical steering wheel is similar to that of a spherical support. The pushing jack is rotatably connected with the sliding shoe steering wheel through a single hinge structure, the jacking jack is connected with the fine-tuning spherical steering wheel through a bowl buckle structure in a spherical matching mode, and the jacking jack and the fine-tuning spherical steering wheel are respectively responsible for fine tuning of the beam section in the front-back direction and the up-down direction. The two jacks and the synchronous sliding equipment are utilized to realize the accurate control of the sliding of the whole curve. When the sliding device slides, the tail sliding shoes can be fixed by using fixing pieces such as the stop blocks, the pushing of the pushing jack is accurately controlled to enable the beam section to slide forwards, and meanwhile, the guide blocks, the sliding shoe steering wheels and the like below the two sliding shoes are automatically adjusted along with the curvature of the track. After the sliding block slides to the designated position, the fixing of the tail sliding shoe is released and oil return is carried out, the lower sliding shoe is relatively fixed under the self-weight action of the beam section, so that the pushing jack retracts to the initial state, and the stop block is moved to carry out the next section of sliding.
Compared with the prior art, the invention has the following advantages:
(1) the spherical matching structure of the steerable middle supporting table and the fine-tuning spherical steering wheel is additionally arranged between the lower sliding shoe and the jacking jack, and meanwhile, the sliding shoe fixing frame capable of rotating in the horizontal plane is additionally arranged between the lower sliding shoe and the pushing jack, so that the sliding shoe fixing frame is applicable to automatic sliding construction under various working conditions such as variable beam height, flat curve and the like.
(2) The jack and the steering mechanism are utilized for fine adjustment, the sliding flexibility and precision are improved, the automatic construction of the curved beam bridge can be realized, and the industrialization degree is high.
Drawings
FIG. 1 is a schematic front view of a beam section displacement apparatus of the present invention;
FIG. 2 is a schematic top view of the beam section displacement apparatus of the present invention;
FIG. 3 is a schematic bottom view of the beam section displacement apparatus of the present invention;
FIG. 4 is a left side schematic view of the beam section displacement apparatus of the present invention;
FIG. 5 is a schematic right view of the beam section displacement apparatus of the present invention;
FIG. 6 is an axial schematic view of the beam section displacement apparatus of the present invention;
FIG. 7 is a schematic diagram of the present invention operating on a curved glide track;
FIG. 8 is a schematic view of the connection of the jack to the lower shoe;
FIG. 9 is a partial schematic view of a fine spherical steering wheel portion of the beam segment skid;
FIG. 10 is a plan view of a fine spherical steering wheel portion of the beam segment skid;
FIG. 11 is a partial isometric view of a slipper steering wheel;
the notation in the figure is:
1-upper bearing platform, 2-jacking jack, 3-middle supporting platform, 4-fine-tuning spherical steering wheel, 5-lower sliding shoe, 6-sliding shoe steering wheel, 7-sliding shoe fixing frame, 8-jack front pin shaft, 9-pushing jack, 10-jack tail pin shaft, 11-tail sliding shoe, 12-front sliding shoe guide block and 13-tail sliding shoe guide block.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
Example 1
A beam section sliding device suitable for a curved beam is shown in figures 1-6 and comprises an upper bearing platform 1 for supporting an upper bridge section, a jacking jack 2, a middle supporting platform 3, a fine-tuning spherical steering wheel 4, a lower sliding shoe 5, a sliding shoe steering wheel 6, a sliding shoe fixing frame 7, a jack front pin shaft 8, a pushing jack 9, a jack tail pin shaft 10, a tail sliding shoe 11, a front sliding shoe guide block 12 and a tail sliding shoe guide block 13.
Wherein, the front slipper guide block 12 is welded under the lower slipper 5, and the fine tuning spherical steering wheel 4 is arranged above the lower slipper 5; the fine-tuning spherical steering wheel 4 is of a hemispherical structure, a bowl-shaped groove is processed at the bottom of the middle supporting table 3 and is matched and buckled above the fine-tuning spherical steering wheel 4, and the fine-tuning spherical steering wheel 4 and the middle supporting table 3 can be matched to form a steering structure which can adapt to steering in various directions, and the steering structure is shown in fig. 9 and 10. And a jacking jack 2 is arranged above the bowl-buckled type middle supporting platform 3 and used for adjusting the vertical height of the beam section, and an upper bearing platform 1 is fixedly arranged above the jacking jack 2. The rear part (i.e. the rear end) of the lower sliding shoe 5 is provided with a sliding shoe steering wheel 6 (which can be composed of an upper part structure and a lower part structure which are in rotating fit with each other) capable of rotating in a horizontal plane, wherein the upper part structure is arranged on the lower sliding shoe 5, the upper part structure is fixedly provided with a sliding shoe fixing frame 7 and is used for plane steering of curved sliding shoes (shown in figure 11), the upper end of the sliding shoe steering wheel 6 is fixedly provided with the sliding shoe fixing frame 7, the sliding shoe fixing frame 7 and a pushing jack 9 are in rotating connection by a front pin shaft of the jack, please refer to figures 1 and 8 again, the rear part of the pushing jack 9 is in rotating connection with a tail sliding shoe 11 through a tail pin shaft 10 of the jack, and a tail sliding shoe guide block 13 for steering is welded below the tail. A detachable fixing piece (such as a stop block which is detachably arranged on the sliding track and abuts against the tail sliding boot) can be arranged beside the tail sliding boot 11 and is used for fixing during pushing sliding construction.
The sliding rail in the embodiment adopts a double-rail type guide rail, the line type and the curvature of the sliding rail can be obtained by calculation according to the line type and the curvature of a constructed curved bridge, the lower sliding shoe 5 and the tail sliding shoe 11 are respectively placed between the double rails through a front sliding shoe guide block 12 and a tail sliding shoe guide block 13, and the tail sliding shoe 11 is fixed on the sliding rail through a fixing piece; during construction, the bridge sections are fixed on the upper bearing platform 1.
The beam section sliding device of the embodiment is suitable for the field of bridge section assembling, pushing and sliding construction and is suitable for various working conditions such as curved bridges and variable-section beams, and the working process of the beam section sliding device is explained by taking the assembling and sliding construction of the variable-section curved bridge sections as an example.
1) Designing, calculating and manufacturing the sliding track beam: calculating the linear type of the sliding track according to the linear design of the constructed bridge, wherein the linear type comprises parameters such as the length of a linear section, the length of a curve, the radius of curvature and the like, and customizing the sliding track beam in a factory according to the calculation result, such as the curve sliding track beam in fig. 7.
2) Erecting a sliding track beam: and erecting the sliding track beam according to specific construction conditions, including but not limited to erecting a lattice type support to erect the sliding track beam.
3) Movement of the beam section sliding device on the linear sliding track beam: and beam section sliding devices are arranged on the corresponding linear sliding track beams. The tail sliding shoe 11 is fixed on the linear sliding track beam through a fixing piece, and the front sliding shoe guide block 12 and the tail sliding shoe guide block 13 are arranged in the middle of the bidirectional guide rail at the upper part of the sliding track beam, so that the forward pushing direction is consistent with the guide rail direction; when the pushing and sliding are carried out, a pushing jack 9 (a hydraulic jack and the like can be adopted) advances in a pushing mode, the jacking jack 2 is controlled to adjust the vertical height of the beam section, and meanwhile, the fine-adjustment spherical steering wheel 4 can rotate and perform fine adjustment in a vertical plane to adapt to the pushing and sliding of the variable-section bridge section. After the pushing and sliding movement is finished for one time, the fixing piece is loosened, the pushing jack 9 retracts, at the moment, the lower sliding shoe 5 keeps relatively fixed under the action of gravity, the tail sliding shoe 11 slides forwards along the guide rail, and after the retraction is finished, the tail sliding shoe is fixed again for the next pushing and sliding movement.
4) Movement of the beam section sliding device on the curved sliding track beam: when the corresponding curved sliding track beam (such as fig. 7) is pushed and slid, the pushing jack 9 controls the pushing force to push and move forwards, and meanwhile, the vertical height of the beam section is adjusted through the jacking jack 2, and the fine-adjustment spherical steering wheel 4 can rotate and perform fine adjustment in a vertical plane so as to adapt to the pushing and sliding of the variable-section bridge section. The front shoe guide block 12 is a wedge structure, which can ensure the steering sliding between the guide rails of the curve section and reduce the impact friction. When the pushing jack 9 pushes, the lower sliding shoes 5 and the upper components thereof can automatically turn along the guide rails through the sliding shoe steering wheels 6 so as to slide on the tracks through the curved sections, and meanwhile, the beam sections can rotate on the horizontal plane through the fine-adjustment spherical steering wheels 4. After the pushing and sliding movement is finished for one time, the fixing piece is loosened, the pushing jack 9 is controlled to retract, the tail sliding shoe 11 slides forwards along the guide rail, and after the retraction is finished, the tail sliding shoe is fixed again for the next pushing and sliding movement.
5) And (3) realizing fine adjustment of the bridge section: when the bridge segment is pushed and slid, four beam segment sliding devices are fixed at four top corners of the bottom of the segment. The fine adjustment of the bridge section is realized by locally adjusting the pushed section beam to be parallel and horizontal to the guide rail all the time under the conditions of turning, super-elevation and the like through a jack. The beam fine adjustment is realized by a fine adjustment spherical steering wheel 4 in the beam section sliding device. As shown in fig. 9, the fine tuning spherical steering wheel 4 and the central support 3 form a spherical matching structure, and the specific working mode is as follows:
(1) when the roof beam shifts to the region that becomes high, can produce the gravity eccentricity of roof beam, because the sphere cooperation structure of bowl knot formula can rock from top to bottom on the sphere, when receiving the disturbance because the dead weight eccentricity of roof beam, bowl knot can automatic adjust from top to bottom, until the dead weight eccentricity of roof beam disappears, beam surface level promptly. This way of fine tuning the beam may be referred to as "tumbler-like tuning". In addition, when the beam is pushed to an area with too large height, and the vertical adjustment cannot be met only by the fine adjustment steering wheel, the beam is roughly adjusted through the jacking jack 2, and then the fine adjustment spherical steering wheel 4 is used for self-adaptive adjustment.
(2) When the beam is pushed on the curve track, the turntables at the lower four corners of the beam are mutually restrained and rotate around the shaft on the horizontal plane together, so that the problem of adjusting the direction and the trend of the segmental beam is solved. This fine adjustment of the beam may be referred to as "steering wheel adjustment" in reference to the steering operation of the car when the train is turning. Since the rotation of the bowl buckle in the horizontal plane of the spherical surface is 360 degrees, the adjustment in this way can adapt to the tracks with various curvature radii.
6) After the bridge sections are slid to be in place by the pushing and sliding technical scheme, the bridge sections can be spliced and installed in place according to specific construction conditions, and the details are not repeated.
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 (7)
1. The beam section sliding device is characterized by comprising an upper bearing platform (1), a jacking jack (2), a middle supporting platform (3) and a lower sliding shoe (5) which are sequentially arranged from top to bottom, wherein the middle supporting platform (3) and the lower sliding shoe (5) are matched through a spherical surface and can relatively rotate in a vertical plane, a sliding shoe fixing frame (7) capable of rotating in a horizontal plane is further arranged at the rear end of the lower sliding shoe (5), the beam section sliding device further comprises a pushing jack (9) and a tail sliding shoe (11), and two ends of the pushing jack (9) are respectively and rotatably connected with the sliding shoe fixing frame (7) and the tail sliding shoe (11);
the rear end of the lower sliding shoe (5) is also provided with a sliding shoe steering wheel (6) which can rotate in the horizontal plane, and the sliding shoe fixing frame (7) is fixedly arranged on the sliding shoe steering wheel (6);
the bottoms of the lower sliding shoe (5) and the tail sliding shoe (11) are respectively provided with a front sliding shoe guide block (12) and a tail sliding shoe guide block (13) which can slide on a sliding track;
the upper sliding shoe and the lower sliding shoe are characterized in that a fine-adjustment spherical steering wheel (4) with a spherical curved surface at the top is installed on the lower sliding shoe (5), a bowl-shaped groove matched with the top of the fine-adjustment spherical steering wheel (4) is processed at the lower end of the middle supporting table (3), and the middle supporting table (3) is buckled on the lower sliding shoe (5) to realize the spherical matching of the upper sliding shoe and the lower sliding shoe.
2. The beam section sliding device suitable for the curved beam is characterized in that the pushing jack (9) is respectively and rotatably connected with the sliding shoe fixing frame (7) and the tail sliding shoe (11) through a jack front pin shaft (8) and a jack tail pin shaft (10) which rotate in a vertical plane.
3. The beam section sliding device suitable for the curved beam according to claim 1, wherein the sliding track is a double-track type guide rail, and the front sliding shoe guide block (12) and the tail sliding shoe guide block (13) are both wedge-shaped structures embedded between the double tracks.
4. A beam segment displacement device for a curved beam according to claim 1, characterized in that the front shoe guide block (12) and the rear shoe guide block (13) are fixed by welding to the bottom of the lower shoe (5) and the rear shoe (11), respectively.
5. A beam segment displacement device for a curved beam according to claim 1, characterized in that it further comprises a fastener for fixing the tail shoe (11) on the displacement rail.
6. The beam section sliding device for the curved beam is characterized in that the fastener is a stop block which is detachably fixed on the sliding rail and used for abutting against the rear end of the tail sliding shoe (11).
7. The beam section displacement device for curved beams, according to claim 1, characterized in that the pushing jack (9) and the jacking jack (2) are hydraulic jacks controlled by computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811427336.0A CN109594476B (en) | 2018-11-27 | 2018-11-27 | Beam section sliding device suitable for curved beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811427336.0A CN109594476B (en) | 2018-11-27 | 2018-11-27 | Beam section sliding device suitable for curved beam |
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| Publication Number | Publication Date |
|---|---|
| CN109594476A CN109594476A (en) | 2019-04-09 |
| CN109594476B true CN109594476B (en) | 2020-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811427336.0A Active CN109594476B (en) | 2018-11-27 | 2018-11-27 | Beam section sliding device suitable for curved beam |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110644377B (en) * | 2019-09-30 | 2021-01-12 | 中铁二院工程集团有限责任公司 | Roller type beam body pushing construction device |
| CN111472281A (en) * | 2020-04-23 | 2020-07-31 | 中铁二十二局集团第二工程有限公司 | Pushing walking system |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2633797A1 (en) * | 1976-07-28 | 1978-02-02 | Egon Forstner | Civil engineering load handling machine - has winch driving ropes suspending load and attached to rear to thrust it forward |
| DE4306040C2 (en) * | 1993-02-26 | 1995-03-30 | Walter Dipl Ing Komm | Method and device for the transverse displacement of bridge components manufactured at heights |
| CN104989114B (en) * | 2015-07-15 | 2017-05-10 | 上海绿地建设(集团)有限公司 | Sliding construction device and method for large-span arc-shaped roof |
| CN106065574A (en) * | 2016-06-17 | 2016-11-02 | 柳州黔桥工程材料有限公司 | Stride incremental launching construction crosses the method for jigsaw |
| CN205894717U (en) * | 2016-08-12 | 2017-01-18 | 河北建工集团有限责任公司 | Space truss structure accumulation sliding system |
| CN206070386U (en) * | 2016-09-20 | 2017-04-05 | 江苏京沪重工有限公司 | A kind of sliding pushing tow system for bridge steel structural unit |
| CN108560429A (en) * | 2017-09-18 | 2018-09-21 | 贵州路桥集团有限公司 | Stride thrustor and pushing method |
| CN207933903U (en) * | 2018-03-12 | 2018-10-02 | 中交第二航务工程局有限公司 | The slipping-shoe device of box girder with variable cross section pushing tow |
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