CN203530839U - Bridge-end telescopic device for large-displacement railroad bridges - Google Patents
Bridge-end telescopic device for large-displacement railroad bridges Download PDFInfo
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- CN203530839U CN203530839U CN201320596333.6U CN201320596333U CN203530839U CN 203530839 U CN203530839 U CN 203530839U CN 201320596333 U CN201320596333 U CN 201320596333U CN 203530839 U CN203530839 U CN 203530839U
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Abstract
The utility model relates to a bridge-end telescopic device for large-displacement railroad bridges. The bridge-end telescopic device comprises concrete sleepers and fixed steel sleepers. The concrete sleepers are arranged on the first bridge and the second bridge which are adjacent. The first steel sleeper and the second steel sleeper are arranged at the corresponding bridge ends of the two bridges respectively. Four supporting beams are arranged above the concrete sleepers and the steel sleepers in the length direction of steel rails, one end of each supporting beam is a fixed end, the other ends of the supporting beams are movable ends, the fixed ends are fixedly connected with the first concrete sleeper and the first fixed steel sleeper which are arranged on the first bridge, and the movable ends are movably connected with the second concrete sleeper and the second fixed steel sleeper which are arranged on the second bridge. At least one movable steel sleeper is arranged between the first bridge and the second bridge and connected with the bottoms of the supporting beams. The supporting beams are arranged above the fixed steel sleepers and the movable steel sleepers, and therefore the defects in the prior art are overcome; the structure is simple, and therefore line inspection is easy.
Description
Technical field
The utility model is about a kind of stretching device, especially a kind of large displacement railroad bridge end stretching device.LONG-SPAN RAILWAY bridge beam body is under the effects such as variations in temperature and live load of train, displacement between the beam-ends of adjacent bridge or bridge and abutment is larger, for keeping the continuity of bridge and track, beam-ends stretching device of the present utility model is set within the scope of adjacent bridge beam-ends, to meet the requirement of train operation.
Background technology
Railroad bridge end stretching device is arranged at beam seam place, and in order to guarantee that rail is in reliable transition and the support of adjacent bridge gap location, because stretching device is laid in the least favorable position of bridge, so its performance is most important.First beam-ends stretching device is answered all distortion of commensurate structure, as beam-ends corner, beam end displacement (vertical and horizontal) etc.; Secondly should there is good Rigidity and strength, can bear all loads that apply, mobile load as vertical in train, lateral force, fulcrum displacement etc.; Should there is suitable support stiffness, make track keep approaching or consistent in the rigidity of this section with the rigidity on bridge or on roadbed, improve the comfortableness of taking; Newly built railway Longspan Bridge has train running speed high (200km/h and more than), expansion amount at the tip of the girder large (reach ± 600mm and more than), the ride comfort of track is required to the features such as high, current train density is large, the maintenance time is short, beam-ends stretching device, except meeting usability, safety, comfortableness requirement, also should have few maintenance, the easy feature checking in operation process.In sum, the reasonable selection of beam-ends stretching device and structure design are that a n-th-trem relation n is to the important technology of bridge and track overall performance.
As Chinese patent discloses a kind of " for the stretching device of the large displacement of railroad bridge end " for No. 200820108378.3, as shown in Figure 1, this beam-ends stretching device is by movable steel sleeper 2, fixedly the support structure of steel sleeper 1, movable steel sleeper 2--supporting beam 4, displacement controlling box 3(divide fixed end and movable end), under movable steel sleeper under suspension bracket 5, movable steel sleeper bearing 7 with compressing support 8, fixedly steel sleeper is rested the head on lower bolster 6, connecting rod and side guide etc.This structure changes pillow distance by the slippage between movable steel sleeper, thereby adapts to the displacement of beam-ends.Fixedly steel sleeper is connected with displacement controlling box by pillow lower bolster, stiffness tuning by pillow lower bolster can meet rigidity and adjacent area smooth transition under the line of this section, fixedly steel sleeper two ends are provided with side guide keeper simultaneously, control the lateral displacement of side guide, reach the object of limit slippage sleeper lateral displacement.Supporting beam 4 is load-carrying members, and its one end hinge knot is on fixed end displacement controlling box, and the other end inserts in movable end displacement controlling box, realizes along bridge to free-extension.The two ends of brace summer 4 are provided with bearing 7 and compressing support 8, by the support stiffness under bearing 7 adjusting activity steel sleepers, by compressing support 8, prevent the jumping beam under train load, vertical rotating by bearing 7, compressing support 8 is out of shape to adapt to beam-ends corner simultaneously, reduces the additional force of structure.
The structural element of this kind of large displacement beam-ends stretching device is more, and interrelated between each member, production and assembly precision are had relatively high expectations, conventionally need factory-assembled and whole Transporting to job site, and must carry out scene by professional and install, personnel cost and cost of transportation are higher, secondly, after this kind of large displacement beam-ends stretching device is connected with access bridge with main bridge, when unexpected level appears in track circuit, during vertical deformation, beam-ends stretching device does not possess the lateral attitude of circuit and absolute altitude regulatory function, cannot meet the requirement of Track regularity, when unexpected level, when vertical deformation is larger, as taked not in time other measure, the usability of beam-ends stretching device will be had influence on, the comfortableness requirement that safety and personnel take, therefore, this known technology is higher to absolute altitude control and the track laying required precision of installation site, the maintenance that is unfavorable for construction and later stage.Simultaneously, the critical pieces such as brace summer, displacement case, connecting rod are positioned at the bottom of steel sleeper, after water proof rubber bar is installed, above-mentioned parts are just invisible on the line, maintenance personnel need remove water proof rubber bar while carrying out daily observation on the line, when parts generation disease, attached stand need be set on bridge pier and carry out Disease Processing, therefore, this kind of instructions for use that structure does not meet few maintenance, easily checks.
In addition, the large displacement beam-ends of the another kind stretching device structural shape that at present railroad bridge adopts is: beam-ends stretching device by be arranged on transition beam 9 between the main structure of a bridge 92 and access bridge 93, in the parts such as leg 91, sleeper, stopping means form, and the described main structure of a bridge 92 is connected with bridge pier 94 respectively with access bridge 93, refers to Fig. 2.This structure changes the pillow distance of its both sides by the slippage of transition beam 9, thereby adapts to the displacement of beam-ends.The steel sleeper of transition region A is fixed on transition beam 9 tops, and two pillow spacing are constant.Brace summer by beam at the bottom of the middle leg 91 that stretches out with beam two ends of bearing be connected, 91 of brace summer and middle legs can be free to slide.Transition region A steel sleeper is connected by fastener with rail, and contact surface is slip face, guarantees the free-extension of rail.
In the cantilever that this kind of large displacement beam-ends stretching device stretches out by beam-ends, leg bears train load, is subject to the restriction of middle leg cross section property and jib-length, this structural-load-carrying capacity a little less than, while using it for the railroad bridge of large displacement, heavy load, safety is poor; Meanwhile, this kind of structure only has the variable seam of twice, is subject to sleeper pitch to be no more than 650mm specification limits, the seam of variable seam is wide between 20mm～320mm, be less than ± 300mm of adaptable beam end displacement, for the railroad bridge of surpass ± 300mm of beam end displacement, it cannot meet instructions for use; In addition, the critical pieces such as brace summer, carrying bearing are positioned at the bottom of sleeper, after the normal operation of circuit, above-mentioned parts are just difficult for observation on the line, when parts generation disease, attached stand need be set on bridge pier and carry out Disease Processing, therefore, this kind of instructions for use that structure does not meet few maintenance, easily checks.
Because the defect that above-mentioned known technology exists, the utility model people is according to the Production design experience of being engaged in for many years this area and association area, develop safety, runability and the comfortableness that improves bullet train of the present utility model, there is easy inspection simultaneously, keep in repair less the large displacement railroad bridge end stretching device of advantage.
Utility model content
The purpose of this utility model is to provide a kind of large displacement railroad bridge end stretching device, and especially a kind of brace summer is arranged on the fixedly top of steel sleeper and movable steel sleeper, simple in structure, is easy to the large displacement railroad bridge end stretching device of maintenance.
For this reason, the utility model proposes a kind of large displacement railroad bridge end stretching device, it comprises: concrete crosstie, is arranged on the first adjacent bridge, the second bridge; Fixing steel sleeper, is respectively equipped with the first fixing fixing steel sleeper of steel sleeper, second at the corresponding beam-ends of bridge described in two; Brace summer, described concrete crosstie and fixedly steel sleeper above, along rail length direction, be provided with four brace summers, one end of described brace summer is fixed end, the other end is movable end, described fixed end and the first concrete crosstie arranging on wherein said the first bridge with first fixedly steel sleeper be fixedly connected with, described movable end and the second concrete crosstie and second arranging on described the second bridge fixedly between steel sleeper for being flexibly connected; Movable steel sleeper, at least one described movable steel sleeper is arranged between described the first bridge and the second bridge, is connected with the bottom of described brace summer.
Large displacement railroad bridge end stretching device as above, wherein, the cross section of described brace summer is I-shaped cross-section, comprise top end transverse member, bottom end rail and the web that connects this upper and lower end carriage, the thickness of described top end transverse member is greater than the thickness of bottom end rail, and the fixed end web of described brace summer is provided with a plurality of through holes.
Large displacement railroad bridge end stretching device as above, wherein, the fixed end of described brace summer is fixedly fixedly connected with by fixed end buckle between steel sleeper and the first concrete crosstie with first; Wherein, described fixed end buckle have can with described first the first fixed end that fixedly steel sleeper or the first concrete crosstie are connected, and the second fixed end being connected with described brace summer web, and between described the first fixed end and the second fixed end, form the buckling parts that can be fastened on described bottom end rail; Described the first fixed end is provided with the first through hole, described the second fixed end is provided with the second through hole, the center line of described the first through hole, the second through hole is 90 degree angles, by by the first bolt, through described the first through hole, by the first fixed end of fixed end buckle, fixedly steel sleeper or the first concrete crosstie are fixedly connected with first, and by the second bolt the through hole through described the second through hole and described web, the second fixed end of fixed end buckle is fixedly connected with the web of described brace summer.
Large displacement railroad bridge end stretching device as above, wherein, the movable end of described brace summer is fixedly connected by movable end buckle between steel sleeper, the second concrete crosstie with movable steel sleeper, second; Wherein, described movable end buckle have can be arranged on brace summer movable end described second fixedly steel sleeper, the second concrete crosstie or movable steel sleeper be connected first be connected and fixed end, by described first, be connected and fixed the extension that end extends to a side, described extension can be fastened on the bottom end rail upper surface of described brace summer, and described extension and described first is connected and fixed between end and forms the buckling parts that can be fastened on described bottom end rail; Described first is connected and fixed end is provided with through hole, by by bolt through described through hole by first of movable end buckle be connected and fixed end with described second fixedly steel sleeper, the second concrete crosstie or movable steel sleeper be fixedly connected with, the movable end of described brace summer can stretch along rail length direction.
Large displacement railroad bridge end stretching device as above, wherein, with between the described second extension bottom surface of described movable end buckle that fixedly steel sleeper, the second concrete crosstie are connected and the bottom end rail end face of described brace summer, be provided with the wear-resistant slide plate that can reduce sliding extension frictional resistance, the end face of the bottom end rail of described brace summer and bottom surface and described movable end buckle and described second fixedly form sliding friction surface between steel sleeper, the second concrete crosstie, and form matched in clearance between the side of described bottom end rail and described movable end buckle.
Large displacement railroad bridge end stretching device as above, wherein, is provided with service sleeve in described concrete crosstie, and described brace summer is connected with described service sleeve by bolt with described concrete crosstie.
Large displacement railroad bridge end stretching device as above, wherein, the bottom surface of described brace summer and the first concrete crosstie, first fixedly steel sleeper, movable steel sleeper, second are fixedly equipped with resilient sleeper-bearing between steel sleeper, the second concrete crosstie, and are arranged on described movable steel sleeper, second and fixedly between the end face of the described resilient sleeper-bearing on steel sleeper, the second concrete crosstie and described brace summer bottom surface, are provided with wear-resistant slide plate.
Large displacement railroad bridge end stretching device as above, wherein, described in two, the corresponding end of bridge is respectively equipped with a transition steel plate, and described fixedly steel sleeper is arranged in this transition steel plate, by steel sleeper buckle, described fixedly steel sleeper is connected with transition steel plate.
Large displacement railroad bridge end stretching device as above, wherein, is provided with resilient sleeper-bearing between described fixedly steel sleeper and transition steel plate.
Large displacement railroad bridge end stretching device as above, wherein, buckle seat is fixed in described transition steel plate removedly, and one end of described steel sleeper buckle is fastened on described fixedly steel sleeper, and the other end is connected with described buckle seat.
Large displacement railroad bridge end stretching device as above, wherein, is provided with resilient sleeper-bearing between the top of described buckle seat and the bottom surface of described fixedly steel sleeper.
Large displacement railroad bridge end stretching device as above, wherein, is provided with height adjusting cushion plate between the bottom of described buckle seat and described transition steel plate.
Large displacement railroad bridge end stretching device as above, wherein, the two ends of described steel sleeper buckle are respectively equipped with the screw of offering along described fixedly steel sleeper length direction, two adjusting bolts can be resisted against respectively the reinforcing rib of described fixedly steel sleeper through described screw, to regulate the lateral attitude of described fixedly steel sleeper.
Large displacement railroad bridge end stretching device as above, wherein, described first fixedly steel sleeper, second fixedly by rod hinge connection, connect at the both ends of steel sleeper, movable steel sleeper, described in each first fixedly steel sleeper, second be fixedly all connected to a fixed with one end of a L shaped connecting rod seat board one end of steel sleeper, movable steel sleeper, described connecting rod can be connected with the other end of described connecting rod seat board rotationally, and two adjacent interlinking lever ends are articulated and connected.
Large displacement railroad bridge end stretching device as above, wherein, the two ends of described connecting rod seat board respectively by bolt and described connecting rod, described first fixedly steel sleeper, second fixedly steel sleeper or movable steel sleeper be connected, described bolt matches with opening nut and cottor pin.
Large displacement railroad bridge end stretching device as above, wherein, the cross section of described movable steel sleeper is T-shaped.
Comparing feature of the present utility model and advantage with known technology is:
The utility model adopts the structural concept of many movable steel sleepers, a plurality of variable pillow spacing and four brace summers.The utility model, by lever regulated and setting slide plane, can guarantee the displacement synchronous of each movable steel sleeper, makes stretching device evenly flexible, adapts to the requirement of high speed traveling; By arrange the mode of four supporting beams on sleeper, effectively improved the vertical and horizontal bending rigidity of structure, reduced structure height and the linear variation of stretching device place track of structure self simultaneously, meet the requirement of train runability; The utility model, by brace summer resilient sleeper-bearing is set, regulates stretching device place track elasticity rigidity, by regulating the rigidity of backing plate, makes breathing zone consistent with the orbit rigidity of beam-ends both sides, meets the requirement of train comfortableness; The intensity of main bearing member of the present utility model, distortion inspection are calculated and are all met design and use requirement, and the size of structure is determined there is larger safety stock substantially by structural factor; The utility model is by fixedly arranging height adjusting cushion plate between steel sleeper and transition steel plate, can make the circuit at this place reach ± 10mm that heightens ability, solve the sleeper end face absolute altitude inconsistence problems that the production error due to alignment error, product causes, improved the compliance of beam-ends stretching device to line elevation; By fixing steel sleeper is being fixed on the steel pad buckle in pre-high transition steel plate left and right adjusting bolt is being set, reach ± 20mm of regulating power, the horizontal irregularity problem that can effectively solve beam-ends place circuit, improves the compliance of this structure to track, better meets the requirement of comfortable driving.By above measure, make the utility model can guarantee continuity, ride comfort, stability and the safety of beam-ends track on railroad bridge.
The utility model, for after the real bridge engineering of railroad bridge, can improve safety, runability and the comfortableness of bullet train, has advantages of easy inspection, few maintenance simultaneously, has huge economic benefit and social benefit.
Accompanying drawing explanation
The following drawings is only intended to the utility model to schematically illustrate and explain, does not limit scope of the present utility model.Wherein,
Fig. 1 is a kind of known railroad bridge end stretching device structural representation;
Fig. 2 is another kind of known beam-ends stretching structure schematic diagram;
Fig. 3 is large displacement railroad bridge end stretching device schematic top plan view of the present utility model;
Fig. 4 A is the cross-sectional schematic along I-I line in Fig. 3;
Fig. 4 B is the cross-sectional schematic along I '-I ' line in Fig. 3;
Fig. 5 is the cross-sectional schematic along A-A, B-B line in Fig. 3;
Fig. 6 is the cross-sectional schematic along C-C line in Fig. 3;
Fig. 7 is the cross-sectional schematic along D-D line in Fig. 3;
Fig. 8 is the cross-sectional schematic along E-E line in Fig. 3;
Fig. 9 is the cross-sectional schematic along F-F line in Fig. 3;
Figure 10 is the cross-sectional schematic along G-G in Fig. 3;
Figure 11 is the local enlarged diagram at I place in Fig. 5;
Figure 12 is the local enlarged diagram at II place in Fig. 6;
Figure 13 is the local enlarged diagram at III place in Fig. 7;
Figure 14 is the local enlarged diagram at IV place in Fig. 9;
Figure 15 is the local enlarged diagram at V place in Fig. 8;
Figure 16 is the local enlarged diagram at VI place in Fig. 6, Fig. 7, represents the annexation between fixing steel sleeper and default transition steel plate;
Figure 17 is fixedly steel sleeper of the present utility model and default transition steel plate syndeton lateral view;
Figure 18 is the connecting rod position schematic diagram of a flexible state of large displacement railroad bridge end stretching device of the present utility model;
Figure 19 is the partial schematic diagram of overlooking of state shown in Figure 18;
Figure 20 is the connecting rod position schematic diagram of large another flexible state of displacement railroad bridge end stretching device of the present utility model;
Figure 21 is the schematic top plan view of state shown in Figure 20;
Figure 22 is the connecting rod position schematic diagram of large another flexible state of displacement railroad bridge end stretching device of the present utility model;
Figure 23 is the schematic top plan view of state shown in Figure 22;
Figure 24 is connecting rod of the present utility model and the fixing syndeton schematic diagram of steel sleeper, movable steel sleeper.
Description of reference numerals:
Prior art
1, fixedly steel sleeper 2, movable steel sleeper 3, displacement controlling box 4, supporting beam
5, suspension bracket 6 under slip sleeper, fixedly bearing 8, compressing support under steel sleeper pillow lower bolster 7, slip sleeper
9, transition beam 91, middle leg 92, the main structure of a bridge 93, access bridge 94, bridge pier A, transition region
The utility model
10, movable steel sleeper 20, the fixing fixing fixing steel sleeper of steel sleeper 22, second of steel sleeper 21, first
23, reinforcing rib 30, concrete crosstie 31, the first concrete crosstie 32, the second concrete crosstie
40, brace summer 401, top end transverse member 402, bottom end rail 403, web
41, fixed end 410, fixed end buckle 411, the first fixed end 4110, the first through hole
412, the second fixed end 4120, the second through hole 413, buckling parts 414, bolt
415, service sleeve 42, movable end 420, movable end buckle 421, first are connected and fixed end
422, extension 423, buckling parts 430, location buckle 50, wear-resistant slide plate 60, resilient sleeper-bearing
70, transition steel plate 71, steel sleeper buckle 72, resilient sleeper-bearing 73, buckle seat
74, height adjusting cushion plate 75, adjusting bolt 80, connecting rod 81, connecting rod seat board
100, rail 101, main bridge side 102, simply supported beam side 1011,1021, coagulation earthen platform.
The specific embodiment
A kind of large displacement railroad bridge end stretching device the utility model proposes, comprising: concrete crosstie, is arranged on the first adjacent bridge, the second bridge; Fixing steel sleeper, is respectively equipped with the first fixing fixing steel sleeper of steel sleeper, second at the corresponding beam-ends of bridge described in two; Brace summer, concrete crosstie and fixedly steel sleeper above, along rail length direction, be provided with four brace summers, one end of described brace summer is fixed end, the other end is movable end, described fixed end and the first concrete crosstie arranging on wherein said the first bridge with first fixedly steel sleeper be fixedly connected with, described movable end and the second concrete crosstie and second arranging on described the second bridge fixedly between steel sleeper for being flexibly connected; At least one movable steel sleeper is arranged between described the first bridge and the second bridge, is connected with the bottom of described brace summer.
The structural form of beam-ends stretching device, support stiffness to track, during driving, the uniformity variation of beam-ends stretching device pillow distance and the indexs such as regulating power vertical to circuit, lateral attitude become the principal element of controlling Track regularity, travel safety and comfortableness on bridge.In the utility model, four brace summers are uniformly distributed, wherein, in rail inner side, two brace summers are set, outside at rail arranges respectively a brace summer, by arrange the mode of four supporting beams on sleeper, has effectively improved the vertical and horizontal bending rigidity of structure, structure height and the linear variation of stretching device place track of structure self have been reduced simultaneously, meet the requirement of train runability, due to brace summer, be arranged on the top of sleeper simultaneously, be therefore easy to the inspection of line.
For technical characterictic of the present utility model, object and effect being had more clearly, understand, below in conjunction with accompanying drawing and preferred embodiment, the specific embodiment, structure, feature and effect to large displacement railroad bridge end stretching device of the present utility model, be described in detail as follows.In addition, by the explanation of the specific embodiment, can be to reach technological means and the effect that predetermined object takes more to be goed deep into concrete understanding to the utility model, however institute's accompanying drawing be only to provide with reference to and explanation use, be not used for the utility model to be limited.
As shown in Figures 3 to 10, the large displacement railroad bridge end stretching device the utility model proposes comprises: concrete crosstie 30, is arranged on the first adjacent bridge, the second bridge.Fixedly steel sleeper 20, at the corresponding beam-ends of two bridges, are respectively equipped with the first fixing fixing steel sleeper 22 of steel sleeper 21, second.Brace summer 40, above the concrete crosstie 30 arranging on two bridges and fixedly steel sleeper 20, be provided with four brace summers 40 along rail length direction, one end of brace summer 40 is fixed end 41, the other end is movable end 42, fixed end 41 and the first concrete crosstie 31 arranging on the first bridge wherein with first fixedly steel sleeper 21 be fixedly connected with, movable end 42 and the second concrete crosstie 32 and second arranging on the second bridge fixedly between steel sleeper 22 for being flexibly connected.Between the first bridge and the second bridge, be provided with at least one movable steel sleeper 10, the top of this activity steel sleeper is connected with the bottom of brace summer 40.Above-mentioned respectively with the fixed end 41 of brace summer 40, the first concrete crosstie 31 that movable end 42 is connected, the first fixedly steel sleeper 21 and the second concrete crosstie 32, second fixedly steel sleeper 22 formed a plurality of constant fulcrum of brace summer 40, and be positioned at main bridge side (the first bridge) 101, the movable steel sleeper 10 being connected with brace summer 40 between simply supported beam side (the second bridge) 102 has formed the variable fulcrum of brace summer 40, between each variable fulcrum and adjacent fulcrum, formed variable pillow spacing, the quantity of movable steel sleeper 10 is set by change, can increase the quantity of variable pillow spacing, thereby improve the telescopic displacement amount of two bridge adjacent bridge ends.
Please refer to Figure 11, Figure 12, Figure 13, Figure 14, Figure 15, wherein, the cross section of brace summer 40 is I-shaped cross-section, comprise top end transverse member 401, bottom end rail 402 and the web 403 that connects this upper and lower end carriage, and the thickness of top end transverse member 401 is greater than the thickness of bottom end rail 402, form upper and lower asymmetric I-shaped cross-section, fixed end 41 webs 403 of brace summer 40 are provided with a plurality of through holes.Adopt the different I-shaped cross-section structure of this upper and lower thickness, reduced the thickness of bottom end rail 402, can under the condition that guarantees the rigidity of structure, reduce buckle height, to guarantee traffic safety as far as possible.
Further, as shown in Fig. 6, Fig. 8, Figure 12, Figure 15, the fixed end 41 of described brace summer 40 is fixedly fixedly connected with by fixed end buckle 410 between steel sleeper 21 and the first concrete crosstie 31 with first.Wherein, fixed end buckle 410 have can with first the first fixed end 411 that fixedly steel sleeper 21 or the first concrete crosstie 31 are connected, and the second fixed end 412 being connected with described brace summer web 403, and between described the first fixed end 411 and the second fixed end 412, form the buckling parts 413 that can be fastened on described bottom end rail 402.Described the first fixed end 411 is provided with the first through hole 4110, described the second fixed end 412 is provided with the second through hole 4120, described the first through hole 4110, the center line of the second through hole 4120 is 90 degree angles, by by bolt 414, through described the first through hole 4110, by the first fixed end 411 of fixed end buckle 410, fixedly steel sleeper 21 or the first concrete crosstie 31 are fixedly connected with first, and by bolt 415 through hole through the second through hole 4120 and web 403, the second fixed end 412 of fixed end buckle 410 is fixedly connected with the web 403 of brace summer 40, thereby by the fixed end of described brace summer 41 with first fixedly steel sleeper 21 be fixedly connected with the first concrete crosstie 31.
In addition,, as shown in Fig. 5, Fig. 7, Fig. 9, Figure 11, Figure 13, Figure 14, the movable end 42 of brace summer 40 is fixedly connected by movable end buckle 420 between steel sleeper 22, the second concrete crosstie 32 with movable steel sleeper 10, second.Wherein, movable end buckle 420 have can be arranged on brace summer movable end 42 second fixedly steel sleeper 22, the second concrete crosstie 32 or movable steel sleeper 10 be connected first be connected and fixed end 421, the extension 422 being extended to form to a side by the described first top that is connected and fixed end 421, extension 422 can be fastened on the upper surface of the bottom end rail 402 of described brace summer 40, and described extension 422 and first is connected and fixed and between end 421, forms the buckling parts 423 can be fastened on described bottom end rail 402.First is connected and fixed end 421 is provided with through hole, by by bolt through described through hole by first of movable end buckle 420 be connected and fixed end 421 with described second fixedly steel sleeper 22, the second concrete crosstie 32 or movable steel sleeper 10 be fixedly connected with, the movable end 42 of described brace summer 40 can stretch along rail length direction (longitudinally).That is, movable end buckle 420 of the present utility model is fastened on brace summer 40, and is connected and fixed and holds 421 to be fixed on movable steel sleeper 10 first of movable end buckle 420 by bolt, and making can relative sliding between movable steel sleeper 10 and brace summer 40.
A specific embodiment is, is provided with service sleeve 415 in concrete crosstie 30, and brace summer 40 is connected with service sleeve 415 by bolt with concrete crosstie 30.As shown in Figure 14, Figure 15, fixed end 41, movable end 42 and first concrete crosstie 31 of brace summer 40, the annexation of the second concrete crosstie 32 have wherein been schematically shown respectively.Specifically, the fixed end 41 of brace summer 40 is connected by bolt, fixed end buckle 410 and service sleeve 415 with the first concrete crosstie 31, and the movable end 42 of brace summer 40 is connected by bolt, movable end buckle 420 and service sleeve 415 with the second concrete crosstie 32.
As shown in Figure 13, Figure 14, a feasible scheme is, with between the described second extension 422 bottom surfaces of described movable end buckle 420 that fixedly steel sleeper 22, the second concrete crosstie 32 are connected and bottom end rail 402 end faces of described brace summer 40, be provided with the wear-resistant slide plate 50 that can reduce sliding extension frictional resistance, the end face of the bottom end rail 402 of described brace summer 40 and bottom surface and described movable end buckle 420 and described second fixedly form sliding friction surface between steel sleeper 22, the second concrete crosstie 32, and are matched in clearance between the side of bottom end rail 402 and movable end buckle 420.
In addition,, as shown in Figure 11 to Figure 15, the bottom surface of described brace summer 40 and the first concrete crosstie 31, first fixedly steel sleeper 21, movable steel sleeper 10, second are fixedly equipped with resilient sleeper-bearing 60 between steel sleeper 22, the second concrete crosstie 32.By being set, resilient sleeper-bearing 60 can regulate the elastic stiffness that beam-ends stretching device of the present utility model place track is set,, by the rigidity of adjustable elastic backing plate 60, make breathing zone consistent with the orbit rigidity of beam-ends both sides, thereby meet the requirement of train comfortableness.
For the movable end of brace summer 40 that further the reduces beam-ends stretching device resistance in telescopic process, improve its ride comfort when flexible, can fixedly between the end face of resilient sleeper-bearing 60 on steel sleeper 22, the second concrete crosstie 32 and the bottom surface of the movable end bottom end rail 402 of brace summer 40, wear-resistant slide plate 50 be set at movable steel sleeper 10, second.
In addition, on the second concrete crosstie being connected in the end with brace summer 40 movable ends 42 (movable end concrete crosstie) 32, be provided with location buckle 430, in the telescopic process of brace summer 40, by this location buckle 430, play the guide-localization effect to brace summer movable end 42, the buckle 430 nonelastic backing plates 60 in place in described location are set on this second concrete crosstie, and the extension bottom surface of location buckle is also without wear-resistant slide plate 50, as shown in figure 10.
As shown in Fig. 4 A, Fig. 4 B, Fig. 6, Fig. 7, Figure 16, Figure 17, described in two, there is respectively a default transition steel plate 70 the corresponding end of bridge, described fixedly steel sleeper 20 is arranged in this default transition steel plate 70, by steel sleeper buckle 71, bolt, described fixedly steel sleeper 20 is connected with default transition steel plate 70.It is pre-buried that described transition steel plate 70 adopts conventional method to carry out, and do not repeat them here.Two transition steel plate 70 in the utility model embed respectively the coagulation earthen platform 1011 of main bridge side 101 ends and the coagulation earthen platform 1021 of simply supported beam side 102 ends, the end face of each transition steel plate 70 is flushed with beam-ends concrete surface, make to be arranged on fixedly steel sleeper 20 end faces in transition steel plate 70 and concrete crosstie 30 at sustained height.In transition steel plate 70, have bolt hole, divide into sleeve and anchor bar, by bolt, realize and being fixedly connected with of coagulation earthen platform 1011,1021.
Further, as shown in Figure 16, Figure 17, between described fixedly steel sleeper 20 and default transition steel plate 70, be provided with resilient sleeper-bearing 72.
A concrete scheme is, buckle seat 73 is fixed in described default transition steel plate 70 removedly, and one end of described steel sleeper buckle 71 is fastened on described fixedly steel sleeper 20, and the other end is connected with described buckle seat 73.
Between the bottom surface of the top of described buckle seat 73 and described fixedly steel sleeper 20, be provided with resilient sleeper-bearing 72, so that the rigidity smooth transition of track.
Between the bottom of described buckle seat 73 and described default transition steel plate 70, be provided with height adjusting cushion plate 74.By this height adjusting cushion plate 74 is set, to avoid the rear fixedly end face of steel sleeper 20 of installation and the top of concrete crosstie 30 to have height tolerance, improve the vertical ride comfort of circuit, thereby improved the comfortableness of train operation.
The two ends of described steel sleeper buckle 71 are respectively equipped with the screw of offering along described fixedly steel sleeper 20 length directions, two adjusting bolts 75 can be resisted against respectively the reinforcing rib 23 of described fixedly steel sleeper through described screw, to regulate the lateral attitude of described fixedly steel sleeper 20, to overcome because processing, alignment error cause the impact on track horizontal compliance, guarantee the traffic safety of train.
Please refer to Fig. 3, Fig. 4 A, Figure 18-Figure 24, described first fixedly steel sleeper 21, second fixedly the both ends of steel sleeper 22, movable steel sleeper 10 respectively by connecting rod 80 connection that is hinged.As shown in figure 24, described in each first fixedly steel sleeper 21, second be fixedly all connected to a fixed with one end of a connecting rod seat board 81 one end of steel sleeper 22, movable steel sleeper 10, described connecting rod 80 can be connected with the other end of described connecting rod seat board 81 rotationally, and two adjacent interlinking lever ends are articulated and connected.Wherein, in the present embodiment, connecting rod seat board 81 is L-shaped.
By bolt, one end of described connecting rod seat board 81 is connected with connecting rod 80, the other end with first fixedly steel sleeper 21, second fixedly steel sleeper 22 or movable steel sleeper 10 be connected, described bolt matches with opening nut and cottor pin, to prevent bolt falling.
In the utility model, the cross section of preferred movable steel sleeper 10 is T-shaped, so that sleeper pitch headroom meets the requirement of maximal dilation amount.
Below in conjunction with specific embodiment, further illustrate the operating principle of the large displacement railroad bridge end of the utility model stretching device.
Brace summer 40 is supports of movable steel sleeper 10, for it provides vertical supporting, train load is delivered to brace summer 40 by movable steel sleeper 10, brace summer 40 passes to resilient sleeper-bearing 60, resilient sleeper-bearing 60 passes to concrete crosstie 30, the rigidity of brace summer 40 and distortion directly have influence on state and the driving of circuit, are the critical components of whole beam-ends stretching device.Wherein, described resilient sleeper-bearing 60 for example can adopt rubber mat plate.Brace summer 40 cross sections are asymmetric " work " tee section.Brace summer 40 is divided into fixed end 41 and movable end 42, on the web 403 of fixed end 41 1 sides, offers through hole, by bolt and buckle and the first concrete crosstie 31 and first fixedly steel sleeper 21 carry out anchor and position, reach the spacing effect of vertical, horizontal; Movable end 42 is telescopic end, the wear-resistant slide plate 50 that the bottom surface of brace summer 40 movable ends 42 and the end face of bottom end rail 402 arrange respectively and between movable end buckle 420 and resilient sleeper-bearing 60 forms sliding friction surface, when carrying out cross spacing by movable end buckle 420, realize free-extension longitudinally, referred to Figure 13, Figure 14.Brace summer 40 is branched some continuous beam, the constant fulcrum span of fixed end 41 and movable end 42 is 600mm, middle variable fulcrum span is 250mm～650mm, the flexible total amount of a variable pillow spacing is 400mm, according to the requirement of total displacement beam, a plurality of variable pillow spacing can be set, realize modularization design.Generally, when a movable steel sleeper 10 is set, there are two variable pillow distances, can the reach ± 400mm of design maximum stroke of stretching device, 1 movable steel sleeper of later every increase, can increase ± 200mm of telescopic displacement amount.
Table 1
| Movable steel sleeper quantity | Design maximum telescopic displacement amount |
| 1 | ±400mm |
| 2 | ±600mm |
| 3 | ± |
| 4 | ±1000mm |
| 5 | ±1200mm |
The cross section of described movable steel sleeper 10 adopts "T"-shaped cross section, and fixedly the cross section of steel sleeper 20 adopts " work " tee section, and in order to make headroom between sleeper meet the requirement of maximal dilation amount, the width of sleeper is 200mm.Movable steel sleeper 10 is connected with brace summer 40 with bolt by movable end buckle 420, and four brace summers 40 of take are fulcrum simultaneously, movable steel sleeper 10 is the indeterminate beam structure of four fulcrums, the constraint of brace summer 40 and 420 pairs of movable steel sleepers 10 of movable end buckle is equivalent to consolidated node, has effectively reduced the load span of movable steel sleeper 10.Structure of the present utility model can effectively reduce the vertical displacement of movable end buckle 420 centers and the self-deformation of movable steel sleeper 10, greatly improves the stability of driving.
Fixedly steel sleeper 20 is connected by default transition steel plate 70 with beam-ends (end of bridge), is two fulcrum simple beam structures, and cross section is " work " word cross section, and end face is connected by buckle with four brace summers 40, for it provides vertical supporting.For there being quarrel bridge floor, at stretching device place, be without quarrel structure, in order to make the vertical rigidity at stretching device place, coordinate mutually with there being the rigidity of quarrel bridge floor, between fixing steel sleeper 20 and default transition steel plate 70, be provided with resilient sleeper-bearing 72, the pressure-bearing rigidity of resilient sleeper-bearing 72 is kcp=(80 ± 10) kN/mm, fixedly the lower vertical global stiffness of steel sleeper 20 pillow is at 140～180kN/mm, and has under the pillow of quarrel bridge floor rigidity approaching, realized the target of orbit rigidity smooth transition.Brace summer 40 and concrete crosstie 30, fixedly steel sleeper 20 is buckle with movable steel sleeper 10 and is connected, in installation process, change with sleeper one with the absolute altitude of the brace summer 40 of concrete crosstie 30 coupling parts, but fixedly steel sleeper 20 transition steel plate 70 default with bridge floor is connected, the rear fixedly end face of steel sleeper 20 and the end face of concrete crosstie 30 are installed and are had unavoidably height tolerance, the vertical irregularity of circuit causing in order to reduce this discrepancy in elevation, fixedly 70 of steel sleeper 20 and default transition steel plate are provided with height adjusting cushion plate 74, and can improve regulating power by the varied in thickness of height adjusting cushion plate 74, make to heighten reach-20mm of scope～+ 20mm.In addition, fixedly steel sleeper 20 be connected with bridge floor after self supreme under, the adjustment capability of left and right, but after fixedly steel sleeper 20 installations are located, due to alignment error and machining deviation, make the Kong Weiyu theoretical value of fastener have certain deviation, as adjusted not in time, by the side sway that causes rail 100 at this place, cause the extra additional force of track cross level irregularity and rail 100, and then have influence on driving.In order to address this problem, the utility model is provided with the bolt of left and right adjusting on the steel sleeper buckle 71 of fixing fixedly steel sleeper 20, when fixedly steel sleeper 20 needs left and right adjusting, only need loosen the setscrew nut in adjusting bolt, then fixedly steel sleeper 20 carries out left and right and is adjusted to rational position, screw adjusting bolt, make it and fixedly reinforcing rib 23 surface of steel sleeper 20 is closely connected, and fastening setscrew nut prevents that bolt from getting loose.The left and right adjusting ability of adjusting bolt is ± 20mm, can effectively solve the horizontal irregularity problem of this place's circuit, improves the compliance of this structure to track, better meets the requirement of comfortable driving.
Be provided with in the present embodiment two movable steel sleepers 10, between two movable steel sleepers 10 and and fixedly between steel sleeper 20 between spacing evenness by connecting rod 80, regulate, connecting rod 80 is facade layout, and Figure 18-Figure 23 is the relative position of 80, the different connecting rods that stretch under states.Connecting rod 80 by connecting rod seat board 81(referring to Figure 24) be connected with fixing steel sleeper 20 ends, connecting rod seat board 81 is " L " shape junction plate, the end of upper end and fixedly steel sleeper 20 or movable steel sleeper 10 is bolted, be provided with slotted nut and cottor pin, prevent bolt falling and cause connecting rod seat board 73 locate failures; Described connecting rod seat board 81 sides and connecting rod 80 are bolted, and are also provided with slotted nut and cottor pin, prevent bolt falling and cause the disabler of lever regulated pillow distance.The syndeton of connecting rod 80 and fixedly steel sleeper 20 or movable steel sleeper 10 is shown in Figure 24.The employing square-section, cross section of connecting rod 80, as long 100mm, wide 30mm.Above construction measure has been considered maintenance and the replacing of connecting rod in use procedure.
The foregoing is only the schematic specific embodiment of the utility model, not in order to limit scope of the present utility model.Any those skilled in the art, is not departing from equivalent variations and the modification of doing under the prerequisite of design of the present utility model and principle, all should belong to the scope of the utility model protection.And it should be noted that, each ingredient of the present utility model is not limited in above-mentioned overall applicability, each technical characterictic of describing in manual of the present utility model can select one to adopt separately or select the multinomial use that combines according to actual needs, therefore, the utility model has been contained other combination relevant with this case inventive point and specifically application in the nature of things.
Claims (16)
1. a large displacement railroad bridge end stretching device, is characterized in that, described device comprises:
Concrete crosstie, is arranged on the first adjacent bridge, the second bridge;
Fixing steel sleeper, is respectively equipped with the first fixing fixing steel sleeper of steel sleeper, second at the corresponding beam-ends of bridge described in two;
Brace summer, described concrete crosstie and fixedly steel sleeper above, along rail length direction, be provided with four brace summers, one end of described brace summer is fixed end, the other end is movable end, described fixed end and the first concrete crosstie arranging on wherein said the first bridge with first fixedly steel sleeper be fixedly connected with, described movable end and the second concrete crosstie and second arranging on described the second bridge fixedly between steel sleeper for being flexibly connected;
Movable steel sleeper, at least one described movable steel sleeper is arranged between described the first bridge and the second bridge, is connected with the bottom of described brace summer.
2. large displacement railroad bridge end stretching device as claimed in claim 1, it is characterized in that, the cross section of described brace summer is I-shaped cross-section, comprise top end transverse member, bottom end rail and the web that connects this upper and lower end carriage, the thickness of described top end transverse member is greater than the thickness of bottom end rail, and the fixed end web of described brace summer is provided with a plurality of through holes.
3. large displacement railroad bridge end stretching device as claimed in claim 2, is characterized in that, the fixed end of described brace summer is fixedly fixedly connected with by fixed end buckle between steel sleeper and the first concrete crosstie with first; Wherein, described fixed end buckle have can with described first the first fixed end that fixedly steel sleeper or the first concrete crosstie are connected, and the second fixed end being connected with described brace summer web, and between described the first fixed end and the second fixed end, form the buckling parts that can be fastened on described bottom end rail; Described the first fixed end is provided with the first through hole, described the second fixed end is provided with the second through hole, the center line of described the first through hole, the second through hole is 90 degree angles, by by the first bolt, through described the first through hole, by the first fixed end of fixed end buckle, fixedly steel sleeper or the first concrete crosstie are fixedly connected with first, and by the second bolt the through hole through described the second through hole and described web, the second fixed end of fixed end buckle is fixedly connected with the web of described brace summer.
4. large displacement railroad bridge end stretching device as claimed in claim 2, is characterized in that, the movable end of described brace summer is fixedly connected by movable end buckle between steel sleeper, the second concrete crosstie with movable steel sleeper, second; Wherein, described movable end buckle have can be arranged on brace summer movable end described second fixedly steel sleeper, the second concrete crosstie or movable steel sleeper be connected first be connected and fixed end, by described first, be connected and fixed the extension that end extends to a side, described extension can be fastened on the bottom end rail upper surface of described brace summer, and described extension and described first is connected and fixed between end and forms the buckling parts that can be fastened on described bottom end rail; Described first is connected and fixed end is provided with through hole, by by bolt through described through hole by first of movable end buckle be connected and fixed end with described second fixedly steel sleeper, the second concrete crosstie or movable steel sleeper be fixedly connected with, the movable end of described brace summer can stretch along rail length direction.
5. large displacement railroad bridge end stretching device as claimed in claim 4, it is characterized in that, with between the described second extension bottom surface of described movable end buckle that fixedly steel sleeper, the second concrete crosstie are connected and the bottom end rail end face of described brace summer, be provided with the wear-resistant slide plate that can reduce sliding extension frictional resistance, the end face of the bottom end rail of described brace summer and bottom surface and described movable end buckle and described second fixedly form sliding friction surface between steel sleeper, the second concrete crosstie, and form matched in clearance between the side of described bottom end rail and described movable end buckle.
6. the large displacement railroad bridge end stretching device as described in claim 3 to 5 any one, is characterized in that, in described concrete crosstie, is provided with service sleeve, and described brace summer is connected with described service sleeve by bolt with described concrete crosstie.
7. the large displacement railroad bridge end stretching device as described in claim 1 to 5 any one, it is characterized in that, the bottom surface of described brace summer and the first concrete crosstie, first fixedly steel sleeper, movable steel sleeper, second are fixedly equipped with resilient sleeper-bearing between steel sleeper, the second concrete crosstie, and are arranged on described movable steel sleeper, second and fixedly between the end face of the described resilient sleeper-bearing on steel sleeper, the second concrete crosstie and described brace summer bottom surface, are provided with wear-resistant slide plate.
8. large displacement railroad bridge end stretching device as claimed in claim 1, it is characterized in that, described in two, the corresponding end of bridge is respectively equipped with a transition steel plate, and described fixedly steel sleeper is arranged in this transition steel plate, by steel sleeper buckle, described fixedly steel sleeper is connected with transition steel plate.
9. large displacement railroad bridge end stretching device as claimed in claim 8, is characterized in that, between described fixedly steel sleeper and transition steel plate, is provided with resilient sleeper-bearing.
10. large displacement railroad bridge end stretching device as claimed in claim 8, is characterized in that, buckle seat is fixed in described transition steel plate removedly, and one end of described steel sleeper buckle is fastened on described fixedly steel sleeper, and the other end is connected with described buckle seat.
11. large displacement railroad bridge end stretching devices as claimed in claim 10, is characterized in that, between the top of described buckle seat and the bottom surface of described fixedly steel sleeper, are provided with resilient sleeper-bearing.
12. large displacement railroad bridge end stretching devices as claimed in claim 10, is characterized in that, between the bottom of described buckle seat and described transition steel plate, are provided with height adjusting cushion plate.
13. large displacement railroad bridge end stretching devices as claimed in claim 8, it is characterized in that, the two ends of described steel sleeper buckle are respectively equipped with the screw of offering along described fixedly steel sleeper length direction, two adjusting bolts can be resisted against respectively the reinforcing rib of described fixedly steel sleeper through described screw, to regulate the lateral attitude of described fixedly steel sleeper.
14. large displacement railroad bridge end stretching devices as claimed in claim 1, it is characterized in that, described first fixedly steel sleeper, second fixedly by rod hinge connection, connect at the both ends of steel sleeper, movable steel sleeper, described in each first fixedly steel sleeper, second be fixedly all connected to a fixed with one end of a L shaped connecting rod seat board one end of steel sleeper, movable steel sleeper, described connecting rod can be connected with the other end of described connecting rod seat board rotationally, and two adjacent interlinking lever ends are articulated and connected.
15. large displacement railroad bridge end stretching devices as claimed in claim 14, it is characterized in that, the two ends of described connecting rod seat board respectively by bolt and described connecting rod, described first fixedly steel sleeper, second fixedly steel sleeper or movable steel sleeper be connected, described bolt matches with opening nut and cottor pin.
16. large displacement railroad bridge end stretching devices as claimed in claim 1, is characterized in that, the cross section of described movable steel sleeper is T-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320596333.6U CN203530839U (en) | 2013-09-23 | 2013-09-23 | Bridge-end telescopic device for large-displacement railroad bridges |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320596333.6U CN203530839U (en) | 2013-09-23 | 2013-09-23 | Bridge-end telescopic device for large-displacement railroad bridges |
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| Publication Number | Publication Date |
|---|---|
| CN203530839U true CN203530839U (en) | 2014-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320596333.6U Withdrawn - After Issue CN203530839U (en) | 2013-09-23 | 2013-09-23 | Bridge-end telescopic device for large-displacement railroad bridges |
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| CN (1) | CN203530839U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103469726A (en) * | 2013-09-23 | 2013-12-25 | 中国铁道科学研究院铁道建筑研究所 | Large-displacement railroad bridge end expansion device |
| CN110055888A (en) * | 2019-05-30 | 2019-07-26 | 中铁二院工程集团有限责任公司 | A kind of the beam-ends telescopic device and construction method of embedded tracks |
-
2013
- 2013-09-23 CN CN201320596333.6U patent/CN203530839U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103469726A (en) * | 2013-09-23 | 2013-12-25 | 中国铁道科学研究院铁道建筑研究所 | Large-displacement railroad bridge end expansion device |
| CN103469726B (en) * | 2013-09-23 | 2015-06-24 | 中国铁道科学研究院铁道建筑研究所 | Large-displacement railroad bridge end expansion device |
| CN110055888A (en) * | 2019-05-30 | 2019-07-26 | 中铁二院工程集团有限责任公司 | A kind of the beam-ends telescopic device and construction method of embedded tracks |
| CN110055888B (en) * | 2019-05-30 | 2023-09-19 | 中铁二院工程集团有限责任公司 | Beam end telescoping device of embedded track and construction method |
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