CN109024105B

CN109024105B - Hinged transverse moving device of middle-low speed magnetic levitation bridge large-displacement telescopic device

Info

Publication number: CN109024105B
Application number: CN201811141791.4A
Authority: CN
Inventors: 龚俊虎; 谢海林; 鄢巨平; 张家炳
Original assignee: China Railway Maglev Transportation Investment Construction Co Ltd
Current assignee: China Railway Maglev Transportation Investment Construction Co Ltd
Priority date: 2018-09-28
Filing date: 2018-09-28
Publication date: 2024-03-15
Anticipated expiration: 2038-09-28
Also published as: CN109024105A

Abstract

The invention discloses a hinged transverse moving device of a large-displacement telescopic device of a medium-low speed magnetic levitation bridge, wherein the tops of two beam ends of adjacent track beams are respectively provided with a tail end track panel structure and a telescopic device support; a simple small longitudinal beam is arranged between the telescopic device supports, one end of the simple small longitudinal beam can rotate, and the other end of the simple small longitudinal beam can rotate and slide; the upper end of the simply supported small longitudinal beam is slidably provided with a modularized telescopic rail panel through a longitudinal beam sliding device; the modularized telescopic track panel comprises a plurality of track panel subunits; the track beam and the tail end track panel structure of the track panel subunit are provided with hinged transverse moving devices; and connecting rod devices are arranged between every two adjacent track panel subunits and between each adjacent track panel subunit and the tail end track panel structure, and two ends of each connecting rod device are connected and hinged with a hinged transverse moving device comprising a single-hinge transverse sliding device and a double-hinge transverse sliding device. The invention solves the problem that the I-type, II-type and III-type F-rail expansion joints can not adapt to large-displacement expansion of the rail beams, and is suitable for large-displacement expansion of the large-span rail beams or long-joint continuous rail beams.

Description

Hinged transverse moving device of middle-low speed magnetic levitation bridge large-displacement telescopic device

Technical Field

The invention belongs to the field of medium-low speed magnetic levitation track traffic, and particularly relates to a hinged transverse moving device of a medium-low speed magnetic levitation bridge large-displacement telescopic device.

Background

The middle-low speed magnetic levitation track traffic adopts a common electromagnet suction type levitation and guiding technology, and levitation and guiding of the vehicle are realized through electromagnetic attraction between the U-shaped electromagnet and the F-shaped steel rail on the vehicle levitation frame. At present, a middle-low speed magnetic levitation track beam structure and a track structure are divided into two parts, the track structure is laid above a concrete track beam, the track beam structure is constructed firstly, then the track structure is constructed on the track beam, and a slotted track is adopted for middle-low speed magnetic levitation traffic to adapt to the expansion and contraction of the track beam and the track structure.

At present, conventional medium-low speed magnetic levitation traffic slotted track joints (comprising I-type, II-type and III-type telescopic joints) are adopted, but the telescopic joints can only adapt to small telescopic quantity by using a larger structure.

The existing high-speed railway, urban rail transit, inter-urban railway and other wheel-rail transit also have large displacement expansion joints, which are commonly called as rail temperature expansion regulators, and the expansion regulating device is only applicable to wheel-rail systems and is not applicable to medium-low speed magnetic levitation traffic.

The existing highway and urban road large-span bridges have corresponding large-displacement expansion joints, and the common highway bridge large-displacement expansion joints have knuckle expansion joints or modulus expansion joints. The knuckle type expansion joint cannot be applied to a large-displacement expansion device on a medium-low speed magnetic levitation bridge, and the modulus type expansion joint adapts to large-displacement expansion through expansion of a plurality of small gaps, but needs to be deeply improved and changed to adapt to a series of characteristics of medium-low speed magnetic levitation traffic.

The straddle type monorail traffic also has a telescopic device which adapts to the large displacement telescopic quantity of the bridge, generally adopts knuckle type telescopic joints, and can not be applied to the large displacement telescopic device on the medium-low speed magnetic levitation bridge.

Different from the track traffic of the wheel track system which adopts a seamless track structure, the track structure of the middle-low speed magnetic levitation traffic adopts a slotted track structure at present, when the track beam structure stretches at the beam ends of two adjacent hole beams, the size of a gap at the joint part of the slotted track is adjusted to adapt to the stretching of the track beam, and when the track beam stretches and deforms, the track structure does not bear additional horizontal force. However, the conventional medium-low speed magnetic levitation traffic slotted track joint (comprising I-type, II-type and III-type telescopic joints) can only adapt to small telescopic quantity, and can not adapt to large displacement expansion of a track beam for a large-span track beam or a medium-span track beam with long continuous length.

The middle-low speed magnetic levitation traffic I-type expansion joint can only adapt to the maximum expansion amount of +/-20 mm, and the small expansion amount can only adapt to the structural deformation requirement of a simple support structure track beam with the span of 20-30 m of the conventional standard; the medium-low speed magnetic levitation transportation II type expansion joint can only adapt to the maximum expansion amount of +/-40 mm and can only adapt to a track beam structure with the continuous length smaller than 150 m; the middle-low speed magnetic levitation transportation III type expansion joint can only adapt to the maximum expansion amount of +/-60 mm and can only adapt to a track beam structure with the continuous length smaller than 250 m.

At present, in order to save cost, a conventional standard simple support track beam structure with the span of 20-30 m is generally provided with an I-shaped joint, but the I-shaped expansion joint only can adapt to the expansion amount of +/-20 mm at maximum, and the expansion amount of +/-10 mm of a track beam upper structure under the action of live load and temperature effect is deducted, so that the maximum longitudinal displacement of the track beam bridge pier under the action of the least adverse load is less than 10mm, and the limit ensures that the bridge pier of the middle-low speed magnetic levitation traffic is designed to be very thick and uneconomical when in high pier. The problem that the limit value of the longitudinal deformation of the bridge pier is very low also exists for the track beam adopting the II type expansion joint and the III type expansion joint, and finally, the middle-low speed magnetic levitation bridge pier is generally required to be designed to be very thick, the bridge pier is uneconomical, the advantage that the slotted track is adopted in the middle-low speed magnetic levitation traffic cannot be exerted, and the expansion device with larger displacement is required to enable the bridge pier to have larger longitudinal deformation.

For large-span bridges (arch bridges, cable-stayed bridges and suspension bridges) or medium-and-small-span bridges with long continuous length (multi-hole continuous beams), the beam end expansion and contraction amount can reach hundreds of millimeters, sometimes even 1000-2000 mm, and the large expansion and contraction amount can obviously not be achieved by the current I-type, II-type and III-type expansion joints.

Disclosure of Invention

Aiming at least one of the defects or the improvement demands of the prior art, the invention provides a hinged transverse moving device of a large-displacement telescopic device of a medium-low speed magnetic levitation bridge, solves the problem that an I-type, II-type and III-type F-rail telescopic joint cannot adapt to large-displacement telescopic of a rail beam, and is suitable for large-displacement telescopic of a large-span rail beam or a long-link continuous rail beam.

In order to achieve the above object, according to one aspect of the present invention, there is provided a hinged lateral movement device of a large displacement telescopic device of a medium-low speed magnetic levitation bridge, the large displacement telescopic device spans a beam seam of a track beam of a medium-low speed magnetic levitation track;

the beam tops of two beam ends of the adjacent track beams are respectively provided with a tail end track panel structure and a telescopic device support;

a simple small longitudinal beam is arranged between the two corresponding telescopic device supports, one end of the simple small longitudinal beam has a rotational degree of freedom and no sliding degree of freedom, and the other end of the simple small longitudinal beam has the rotational degree of freedom and the sliding degree of freedom in the longitudinal direction of the track beam;

the upper end of the simply supported small longitudinal beam is slidably provided with a modularized telescopic rail panel through a longitudinal beam sliding device;

the modularized telescopic rail panel comprises a plurality of rail panel subunits which are arranged along the longitudinal direction of the rail beam;

both sides of the track beam of the track panel subunit in the longitudinal direction and one side of the tail end track panel structure facing the beam seam are provided with transverse moving devices;

connecting rod devices are arranged between two adjacent track panel subunits and between the track panel subunits at two longitudinal ends and the tail end track panel structure, and two ends of each connecting rod device are connected with the hinged transverse moving device;

the hinged transverse moving device comprises a double-hinge transverse sliding device and a single-hinge transverse sliding device; the track panel subunit is provided with the double-hinge transverse sliding device, and one side, facing the beam seam, of the tail end track panel structure is provided with the single-hinge transverse sliding device.

Preferably, the track panel subunit comprises an F-rail and a cross beam;

the F-shaped rail is arranged at two longitudinal ends of the cross beam and aligned with the F-shaped rail of the tail end rail panel structure.

Preferably, one end of the simple small longitudinal beam is provided with a circular hole, and the simple small longitudinal beam is supported on the telescopic device support through a rotating shaft of the telescopic device support and can rotate around a rotating shaft of the hinge support; the other end of the simply supported small longitudinal beam is provided with an oblong hole, and the rotating shaft of the telescopic device support is supported on the telescopic device support at the other end and can rotate around the rotating shaft and simultaneously can longitudinally move along the oblong hole.

Preferably, the upper edge of the simple small longitudinal beam is provided with a longitudinal sliding groove, the longitudinal sliding groove consists of a longitudinal guide rail, a longitudinal guide rail built-in upper sliding plate and a longitudinal guide rail built-in lower sliding plate, the length of the longitudinal sliding groove is the same as that of the simple small longitudinal beam, the longitudinal guide rail built-in upper sliding plate is fixedly embedded in the inner side of the longitudinal guide rail, and the longitudinal guide rail built-in lower sliding plate is fixedly embedded in the upper edge of the simple small longitudinal beam to form a semi-closed longitudinal sliding groove.

Preferably, the longitudinal beam sliding device comprises a longitudinal sliding block, the longitudinal sliding block is fixed at the lower end of each track panel subunit, the setting position of the longitudinal sliding block corresponds to the position of the simply supported small longitudinal beam, the longitudinal sliding block is of an inverted T-shaped section, and the lower edge of the longitudinal sliding block is embedded in the longitudinal sliding groove, so that the longitudinal sliding block can longitudinally slide along the track beam in the longitudinal sliding groove.

Preferably, the cross beam is provided with a through hole in the longitudinal direction of the track beam, two ends of the hole are provided with an outer stiffening plate and an inner lining stiffening plate, and the double-hinge transverse sliding device is arranged in the hole;

the double-hinge transverse sliding device consists of a central sliding shaft and a sliding sleeve with double-side rotary hinges, wherein the central sliding shaft is fixedly arranged between the outer stiffening plate and the inner stiffening plate along the longitudinal direction of the cross beam, namely the transverse direction of the track beam, and the sliding sleeve with the double-side rotary hinges can freely slide along the direction of the central sliding shaft.

Preferably, the web plate of the transverse beam of the tail end track panel structure is provided with a through hole in the longitudinal direction of the track beam, two ends of the hole are provided with an outer stiffening plate and an inner lining stiffening plate, and the single-hinge transverse sliding device is arranged in the hole;

the single-hinge transverse sliding device consists of a central sliding shaft and a sliding sleeve with a single-side rotating hinge, wherein the central sliding shaft is fixedly arranged between the outer stiffening plate and the inner stiffening plate along the longitudinal direction of the cross beam, namely the transverse direction of the track beam, and the sliding sleeve with the single-side rotating hinge is positioned at one side facing the track Liang Liangfeng and can freely slide along the direction of the central sliding shaft.

Preferably, the linkage comprises a plurality of X-shaped links;

the X-shaped connecting rod consists of an inner rotating limb of the X-shaped connecting rod, an outer rotating limb of the X-shaped connecting rod and a rotating shaft of the X-shaped connecting rod;

the middle part of the inner side rotating limb of the X-shaped connecting rod is in a single rod shape, the middle part of the outer side rotating limb of the X-shaped connecting rod is in a double rod shape, and a space for accommodating the rotation of the single rod is arranged between the double rods; the inner side rotating limb of the X-shaped connecting rod and the outer side rotating limb of the X-shaped connecting rod can freely rotate around the rotating shaft of the X-shaped connecting rod positioned at the intersection point of the inner side rotating limb and the outer side rotating limb;

the two ends of the inner side rotating limb of the X-shaped connecting rod and the outer side rotating limb of the X-shaped connecting rod are respectively hinged with the hinged transverse moving device, in particular to one of the sliding sleeves with double-side rotating hinges of the double-hinge transverse sliding device or the sliding sleeve with single-side rotating hinge of the single-hinge transverse sliding device.

Preferably, the telescopic device support comprises a base plate of the hinge support, a vertical supporting plate of the hinge support and a rotating shaft of the hinge support; the rotating shaft of the hinge support is arranged between the two vertical support plates of the hinge support.

Preferably, waterproof flexible boards are arranged between the cross beams of two adjacent track panel subunits and between the cross beams of the track panel subunits and the cross beams of the tail end track panel structure of the track beam, the length of each waterproof flexible board in the transverse direction of the track beam is equal to that of the cross beam of the track panel subunit, and the waterproof flexible boards are connected with the upper edges of the cross beams.

The above-described preferred technical features may be combined with each other as long as they do not collide with each other.

In general, the above technical solutions conceived by the present invention have the following beneficial effects compared with the prior art:

1. the invention solves the problem that the I-type, II-type and III-type F-rail expansion joints can not adapt to large-displacement expansion of the rail beams, and is suitable for large-displacement expansion of the large-span rail beams or long-joint continuous rail beams.

2. The invention not only realizes the effective connection of the rail panel sub-units in the modularized rail panel, but also converts the longitudinal sliding of the rail panel sub-units into the transverse sliding through the unique structure of the hinged transverse moving device, in particular to the double-hinge transverse sliding device and the single-hinge transverse sliding device, and the structure ensures that the conversion range is large and the telescopic adjustment quantity is increased.

3. According to the invention, through the unique structures of the hinged support and the multi-degree-of-freedom simply supported longitudinal beam, the large-range expansion and contraction are realized by utilizing the simply supported small longitudinal beam to span the beam gaps among the track beams and the long circular holes of the simply supported small longitudinal beam, and meanwhile, the hinged support provides the rotation freedom degree for the simply supported small longitudinal beam, so that the simply supported small longitudinal beam can adapt to expansion and contraction deformation of the track under various working conditions such as vehicle live load, temperature change, longitudinal displacement of the track beam, bending deformation of the track beam and the like.

4. The invention realizes the connection, fixation and smooth sliding of the rail panel subunits of the modularized rail panel by the unique structures of the longitudinal beam sliding device and the upper part of the longitudinal beam, and ensures the driving safety and the large-scale expansion deformation of the beam seam.

5. According to the invention, through the unique structure of the modularized telescopic rail panel, the rail panel sub-units of the modularized telescopic rail panel and the tail end rail panel structure of the rail beam adopt basically similar structures, and a large number of common structures such as F-shaped rails, cross beams and the like are adopted, so that the structure is simple, the processing and the manufacturing are convenient, each rail panel sub-unit can independently stretch and deform, and larger longitudinal displacement stretching amount can be realized within a shorter structural length range.

6. The invention realizes that the larger longitudinal displacement generated by the track beam is automatically equally divided to the gap variation among the sub-units of each track panel through the connecting rod device (particularly the X-shaped connecting rod) and the transverse sliding device, thereby being suitable for the structural requirement of the medium-low speed magnetic levitation traffic slotted track.

7. The invention is arranged at the upper edge of the cross beam through the unique structure of the waterproof soft board, so as to protect the small expansion joint between the rail panel subunits and prevent water, sand and the like from falling into the expansion device.

8. After the invention is adopted, the bridge pier of the middle-low speed magnetic levitation track beam can generate larger longitudinal displacement of the pier top within the range of the strength requirement, thereby reducing the cross section size of the bridge pier and saving the lower structure investment of the middle-low speed magnetic levitation track beam.

Drawings

FIG. 1 is an elevational view of a medium and low speed magnetic levitation bridge large displacement telescoping device according to one embodiment of the invention;

FIG. 2 is a schematic cross-sectional view taken along section 1-1 of FIG. 1;

FIG. 3 is a schematic cross-sectional view taken along section 2-2 of FIG. 1;

FIG. 4 is a schematic cross-sectional view taken along section 3-3 of FIG. 1;

FIG. 5 is a schematic cross-sectional view taken along section 4-4 of FIG. 1;

FIG. 6 is a schematic cross-sectional view taken along section 5-5 of FIG. 1;

FIG. 7 is a schematic cross-sectional view taken along section 6-6 of FIG. 1;

FIG. 8 is a schematic cross-sectional view taken along section 7-7 of FIG. 1;

FIG. 9 is a schematic cross-sectional view taken along section 8-8 of FIG. 1;

FIG. 10 is a schematic cross-sectional view taken along section 9-9 of FIG. 1;

FIG. 11 is a schematic cross-sectional view taken along section 10-10 of FIG. 5;

FIG. 12 is a schematic cross-sectional view taken along section 11-11 of FIG. 5;

FIG. 13 is a schematic cross-sectional view taken along section 12-12 of FIG. 5;

FIG. 14 is a schematic cross-sectional view taken along section 13-13 of FIG. 5;

FIG. 15 is a schematic cross-sectional view taken along section 14-14 of FIG. 5;

FIG. 16 is a partial enlarged view of area A of FIG. 6;

FIG. 17 is a large view of the X-shaped link of FIG. 7;

FIG. 18 is a large sample view of a single-hinge lateral sliding device;

fig. 19 is an enlarged view of the double hinge lateral sliding device.

Detailed Description

The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other. The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1-19, the hinged transverse moving device of the large-displacement telescopic device of the middle-low speed magnetic levitation bridge spans a beam seam of the middle-low speed magnetic levitation track traffic track beam 11; the beam tops of two beam ends of the adjacent track beams 11 are respectively provided with a tail end track panel structure and a telescopic device support; a simple small longitudinal beam 18 is arranged between the two corresponding telescopic device supports, one end of the simple small longitudinal beam 18 has a rotational degree of freedom and no sliding degree of freedom, and the other end of the simple small longitudinal beam 18 has the rotational degree of freedom and the sliding degree of freedom in the longitudinal direction of the track beam; the upper end of the simply supported small longitudinal beam 18 is slidably provided with a modularized telescopic rail panel through a longitudinal beam sliding device; the modularized telescopic rail panel comprises a plurality of rail panel subunits which are arranged along the longitudinal direction of the rail beam; both sides of the track beam of the track panel subunit in the longitudinal direction and one side of the tail end track panel structure facing the beam seam are provided with transverse moving devices; connecting rod devices are arranged between two adjacent track panel subunits and between the track panel subunits at two longitudinal ends and the tail end track panel structure, and two ends of each connecting rod device are connected with the hinged transverse moving device.

The hinged transverse moving device comprises a double-hinge transverse sliding device 10 and a single-hinge transverse sliding device 7; the rail panel subunit is provided with the double-hinge transverse sliding device 10, and the side, facing the beam seam, of the tail end rail panel structure is provided with the single-hinge transverse sliding device 7.

The invention solves the problem that the I-type, II-type and III-type F-rail expansion joints can not adapt to large-displacement expansion of the rail beams, and is suitable for large-displacement expansion of the large-span rail beams or long-joint continuous rail beams. After the invention is adopted, the bridge pier of the middle-low speed magnetic levitation track beam can generate larger longitudinal displacement of the pier top within the range of the strength requirement, thereby reducing the cross section size of the bridge pier and saving the lower structure investment of the middle-low speed magnetic levitation track beam.

As shown in fig. 1 to 10, hinge supports are respectively arranged on the beam tops of two adjacent beam ends of the track beam 11, and each beam end is transversely provided with a plurality of embodiments, namely 2, 3 or more, which are specifically arranged according to the width of the top plate of the track beam and the stress requirement of the structure. Each hinge support is composed of a base plate 14 of the hinge support, a vertical supporting plate 15 of the hinge support, a rotating shaft 16 of the hinge support and a transverse movement preventing nut 17 of the rotating shaft of the hinge support, wherein the base plate 14 of one hinge support is connected with the vertical supporting plates 15 of 2 hinge supports into a whole, the rotating shaft 16 of the hinge support can freely rotate in a circular hole on the vertical supporting plate 15 of the hinge support, and the transverse movement preventing nuts 17 of the rotating shaft of the hinge support are arranged at two ends of the rotating shaft 16 of the hinge support. The longitudinal distance between the hinged supports at the two ends of the beam seam of the track beam 11 is determined according to the expansion and contraction amount and the construction requirement of the expansion and contraction device.

The simple support small longitudinal beam 18 is simply supported on two adjacent beam ends of the track beam 11 through the hinge support, one end of the simple support small longitudinal beam 18 is provided with a circular hole, and the simple support small longitudinal beam is supported on the hinge support through a rotating shaft 16 of the hinge support and can rotate around the rotating shaft 16 of the hinge support; the other end of the simple support small longitudinal beam 18 is provided with an oblong hole, the long round hole is supported on the hinge support at the other end through the hinge support rotating shaft 16, and the long round hole can rotate around the hinge support rotating shaft 16 and can longitudinally move along the hinge support rotating shaft 16, and two ends of each hinge support rotating shaft 16 are respectively provided with a hinge support rotating shaft anti-transverse movement nut 17. The setting position of the simple small longitudinal beam 18 corresponds to the position of the hinged support, and the simple small longitudinal beam 18 is transversely provided with a plurality of embodiments of 2, 2 or 3 or more along the track beam, and the simple small longitudinal beam 18 is specifically arranged according to the width of the top plate of the track beam and the stress requirement of the structure. According to the invention, through the unique structures of the hinged support and the multi-degree-of-freedom simply supported longitudinal beam, the large-range expansion and contraction are realized by utilizing the simply supported small longitudinal beam to span the beam gaps among the track beams and the long circular holes of the simply supported small longitudinal beam, and meanwhile, the hinged support provides the rotation freedom degree for the simply supported small longitudinal beam, so that the simply supported small longitudinal beam can adapt to expansion and contraction deformation of the track under various working conditions such as vehicle live load, temperature change, longitudinal displacement of the track beam, bending deformation of the track beam and the like.

As shown in fig. 1 to 10, the upper edge of each simple small longitudinal beam 18 is provided with a longitudinal sliding groove, the longitudinal sliding groove consists of a longitudinal guide rail 19, a longitudinal guide rail built-in upper sliding plate 21 and a longitudinal guide rail built-in lower sliding plate 22, the length of the longitudinal sliding groove is the same as that of the simple small longitudinal beam 18, the longitudinal guide rail built-in upper sliding plate 21 is embedded and fixed on the inner side of the longitudinal guide rail 19, the longitudinal guide rail built-in lower sliding plate 22 is embedded and fixed on the upper edge of the simple small longitudinal beam 18 to form a semi-closed longitudinal sliding groove, and the longitudinal guide rail built-in upper sliding plate 21 and the longitudinal guide rail built-in lower sliding plate 22 are made of tetrafluoro sliding plates or other low sliding friction coefficient materials. The longitudinal sliding groove is partially and greatly detailed in fig. 16.

As shown in fig. 1 to 10, a plurality of track panel subunits are arranged on the longitudinal sliding groove, and 8 track panel subunits are arranged in the embodiment. Each of the track panel sub-units comprises an F-rail 1, a cross beam 2, bolts 3, outer stiffening plates 8, inner stiffening plates 9, longitudinal slider means, the F-rail 1 being mounted at both longitudinal ends of the cross beam 2, i.e. transverse to the track beam, in alignment with the F-rail 1 of the end track panel structure. The number of the track panel subunits arranged on the simple supporting small longitudinal beam 18 can be 1 or a plurality of track panel subunits, and the specific arrangement number is determined according to the expansion and contraction amount of the expansion and contraction device. Along the longitudinal direction of the track beam, a certain gap is arranged between two adjacent track panel subunits, and the size of the gap is the longitudinal maximum sliding amount of a single track panel subunit. For each track panel subunit, the F-track 1 is bolted to the cross beam 2 by bolts 3, and the cross beam 2 may have an i-shaped cross section, or may have an H-shaped cross section, a box-shaped cross section, or other cross sections. According to the invention, through the unique structure of the modularized telescopic rail panel, the rail panel sub-units of the modularized telescopic rail panel and the tail end rail panel structure of the rail beam adopt basically similar structures, and a large number of common structures such as F-shaped rails, cross beams and the like are adopted, so that the structure is simple, the processing and the manufacturing are convenient, each rail panel sub-unit can independently stretch and deform, and larger longitudinal displacement stretching amount can be realized within a shorter structural length range.

The longitudinal beam sliding device comprises longitudinal sliding blocks 20, the longitudinal sliding blocks 20 are fixed at the lower end of each track panel subunit, the arrangement positions of the longitudinal sliding blocks 20 correspond to the positions of the simple supporting small longitudinal beams 18, the longitudinal sliding blocks 20 are of inverted T-shaped cross sections, the lower edges of the longitudinal sliding blocks 20 are embedded in the longitudinal sliding grooves in a clamping mode, and therefore the longitudinal sliding blocks 20 can longitudinally slide along the track beams in the longitudinal sliding grooves. Specifically, the lower edge of the cross beam 2 is connected with a longitudinal sliding block 20, the setting position of the longitudinal sliding block 20 corresponds to the position of the simple small longitudinal beam 18, the lower edge of the longitudinal sliding block 20 is closely attached to a lower sliding plate 22 with a built-in longitudinal guide rail, the upper edge of the longitudinal sliding block 20 is closely attached to an upper sliding plate 21 with a built-in longitudinal guide rail, and the longitudinal sliding block 20 can slide along a longitudinal bridge in a longitudinal sliding groove formed by the longitudinal guide rail 19, the upper sliding plate 21 with the built-in longitudinal guide rail and the lower sliding plate 22 with the built-in longitudinal guide rail. The longitudinal sliding groove and the longitudinal sliding block 20 are partially and greatly shown in fig. 16. The outer stiffening plates 8 and the inner stiffening plates 9 are welded on the cross beam 2 and are used for preventing the structure from being excessively deformed locally. When the structural deformation meets the requirement, the outer stiffening plate 8 and the inner stiffening plate 9 are not required. The cross-sectional views of the cross-beam 2 at different positions in the transverse direction are shown in fig. 11-15. The invention realizes the connection, fixation and smooth sliding of the rail panel subunits of the modularized rail panel by the unique structures of the longitudinal beam sliding device and the upper part of the longitudinal beam, and ensures the driving safety and the large-scale expansion deformation of the beam seam.

As shown in fig. 1 to 10, waterproof flexible boards 23 are respectively arranged between the cross beams 2 of two adjacent track panel subunits and between the cross beams 2 of the track panel subunits and the cross beams of the tail end track panel structure of the track beam, the length of each waterproof flexible board 23 in the transverse direction of the track beam is equal to the length of the cross beam 2 of the track panel subunit, and the waterproof flexible boards 23 are connected with the upper edges of the cross beams. The waterproof flexible plate 23 is made of a flexible material such as rubber, and the waterproof flexible plate 23 should be freely deformable when the sliding unit slides. The invention is arranged at the upper edge of the cross beam through the unique structure of the waterproof soft board, so as to protect the small expansion joint between the rail panel subunits and prevent water, sand and the like from falling into the expansion device.

As shown in fig. 7, in the initial installation, gaps between two adjacent track panel subunits and between the track panel subunits and the track beam end track panel structure should be equal, and the F tracks may not be connected or may be connected in a non-locking manner, for example, an existing type II or type III expansion joint. X-shaped connecting rods are arranged between two adjacent track panel subunits and between the track panel subunits and the track panel structure at the tail end of the track beam, and the X-shaped connecting rods are gap equally dividing devices and are used for maintaining gaps between the two adjacent track panel subunits and all F-shaped rails 1 between the track panel subunits and the track panel structure at the tail end of the track beam to be always equal when the size of the track Liang Liangfeng is changed. The X-shaped connecting rod consists of an inner rotating limb 24 of the X-shaped connecting rod, an outer rotating limb 25 of the X-shaped connecting rod and a rotating shaft 26 of the X-shaped connecting rod. The middle part of the inner side rotating limb 24 of the X-shaped connecting rod is in a single rod shape, the middle part of the outer side rotating limb 25 of the X-shaped connecting rod is in a double rod shape, and a space for accommodating the rotation of the single rod is arranged between the double rods; the inner rotating limb 24 of the X-shaped connecting rod and the outer rotating limb 25 of the X-shaped connecting rod can freely rotate around the rotating shaft 26 of the X-shaped connecting rod positioned at the intersection point of the inner rotating limb and the outer rotating limb; the X-shaped connecting rod is shown in a large scale in figure 17. The invention realizes that the larger longitudinal displacement generated by the track beam is automatically equally divided to the gap variation among the sub-units of each track panel through the connecting rod device (particularly the X-shaped connecting rod) and the transverse sliding device, thereby being suitable for the structural requirement of the medium-low speed magnetic levitation traffic slotted track.

As shown in fig. 5, a hole is formed in the web of the cross beam 2 of the sliding unit, and a double-hinge transverse sliding device 10 is arranged in the hole, and the large sample of the double-hinge transverse sliding device 10 is shown in fig. 19. The double-hinge transverse sliding device 10 consists of a central sliding shaft and a sliding sleeve with double-side rotary hinges, wherein the central sliding shaft is fixedly arranged between the outer stiffening plate 8 and the inner stiffening plate 9 along the longitudinal direction of the cross beam, namely the transverse direction of the track beam, and the sliding sleeve with the double-side rotary hinges can freely slide along the direction of the central sliding shaft. The inner rotary limb 24 of the X-shaped link and the outer rotary limb 25 of the X-shaped link are each hinged at both ends to the hinged lateral movement device, in particular to one of the sliding sleeves of the double-hinged lateral sliding device 10 with double-sided rotary hinges. The double-hinge lateral sliding device 10 is adapted to accommodate the movement of the X-shaped link about the axis of rotation 26 of the X-shaped link with the displacement of the inner rotating limb 24 of the X-shaped link and the outer rotating limb 25 of the X-shaped link in the transverse bridge direction.

As shown in fig. 1, 2 and 6, a hole is formed in the web plate of the cross beam 2 of the track structure on the bridge, a single-hinge transverse sliding device 7 is arranged in the hole, and a large sample of the single-hinge transverse sliding device 7 is shown in fig. 18. The single-hinge transverse sliding device 7 consists of a central sliding shaft and a sliding sleeve with a single-side rotating hinge, wherein the central sliding shaft is fixedly arranged between the outer stiffening plate 8 and the inner stiffening plate 9 along the longitudinal direction of the cross beam, namely the transverse direction of the track beam, and the sliding sleeve with the single-side rotating hinge can freely slide along the direction of the central sliding shaft. Both ends of the inner rotating limb 24 of the X-shaped link and the outer rotating limb 25 of the X-shaped link are respectively hinged to the hinged lateral movement device, specifically to the sliding sleeve with the single-sided rotating hinge of the single-hinge lateral sliding device 7. The invention not only realizes the effective connection of the rail panel sub-units in the modularized rail panel, but also converts the longitudinal sliding of the rail panel sub-units into the transverse sliding through the unique structure of the transverse moving device, in particular the double-hinge transverse sliding device and the single-hinge transverse sliding device, and the structure ensures that the conversion range is large and the telescopic adjustment quantity is increased.

As shown in fig. 2, the cross-section layout diagram of the rail structure at one side of the longitudinal fixed end of the simply supported small longitudinal beam 18 is shown, the F-rail 1 is bolted to the cross beam 2 through bolts 3, the cross beam 2 can be an i-shaped cross section, an H-shaped cross section, a box-shaped cross section or other cross sections, an outer stiffening plate 8 and an inner stiffening plate 9 are arranged on a web plate of the cross beam 2, holes are arranged between the outer stiffening plate 8 and the inner stiffening plate 9, and a single-hinge transverse sliding device 7 is arranged in the holes. The cross beam 2 is connected with the track beam 11 through the fastener 4, the height-adjusting cushion block 5 and the track bearing table 6.

As shown in fig. 3, the cross section layout diagram of the rail structure on one side of the longitudinal movable end of the simply supported small longitudinal beam 18 is shown, the F-shaped rail 1 is bolted on the cross beam 2 through bolts 3, the cross beam 2 can adopt an i-shaped cross section, an H-shaped cross section, a box-shaped cross section or other cross sections, an outer stiffening plate 8 and an inner stiffening plate 9 are arranged on a web plate of the cross beam 2, holes are arranged between the outer stiffening plate 8 and the inner stiffening plate 9, and a single-hinge transverse sliding device 7 is arranged in each hole. The cross beam 2 is connected with the track beam 11 through the fastener 4, the height-adjusting cushion block 5 and the track bearing table 6. In order to prevent the simple supporting small longitudinal beam 18 from being blocked by the height-adjusting cushion blocks 5 and the rail bearing table 6 when being longitudinally displaced, the positions of the fasteners 4, the height-adjusting cushion blocks 5 and the rail bearing table 6 should avoid the area which can be reached when the simple supporting small longitudinal beam 18 is longitudinally displaced, as shown in fig. 9 and 10 in detail. In fig. 3, the fastener 4, the height-adjusting cushion block 5 and the rail bearing table 6 are arranged at the transverse middle position of the rail beam, and meanwhile, the box-type reinforcing support 12 and the anchor bolt 13 are arranged to support the cross beam 2, so that the cross beam 2 is prevented from being excessively deformed to influence the rail surface smoothness of the F-rail 1.

As shown in fig. 4, each hinge support is composed of a base plate 14 of the hinge support, a vertical support plate 15 of the hinge support, a rotation shaft 16 of the hinge support, and a lateral movement preventing nut 17 of the rotation shaft of the hinge support. According to the width of the track beam top plate and the structural stress requirement, each beam end is transversely provided with a plurality of hinge supports, and the number of the hinge supports can be 2 or 3 or more.

The invention relates to a large-displacement telescopic device of a medium-low speed magnetic levitation bridge, which comprises the following steps:

when the track beam 11 is longitudinally displaced or vertically deflected under the action of external loads such as vehicle live load and temperature, the simply supported small longitudinal beam 18 can adapt to the beam end corner deformation caused by the deflection of the track beam through the hinged support on one hand, and can also longitudinally displace along the oblong holes arranged on the simply supported small longitudinal beam 18 through the hinged support to adapt to the longitudinal displacement of the track beam structure on the other hand.

When the track beam longitudinally displaces, the simple small longitudinal beam 18 longitudinally displaces along the oblong hole, the track structure of the longitudinal movable end of the simple small longitudinal beam 18 longitudinally displaces and drives the X-shaped connecting rod to be composed of an inner rotating limb 24 of the X-shaped connecting rod, an outer rotating limb 25 of the X-shaped connecting rod and a rotating shaft 26 of the X-shaped connecting rod, and the rotation along the central cross shaft of the X-shaped connecting rod simultaneously rotates, so that the single-hinge transverse sliding device 7 and the double-hinge transverse sliding device 10 are further driven to transversely slide, the X-shaped connecting rod connected with the single-hinge transverse sliding device is driven to rotate along the central cross shaft of the double-hinge transverse sliding device, finally all the X-shaped connecting rods rotate along the central cross shaft, and the movement of all the X-shaped connecting rods drives the track panel subunits connected with the X-shaped connecting rod to longitudinally slide, so that the longitudinal displacement of the track beam is equally distributed to the gap variation among the track panel subunits, and the large displacement and expansion of the middle-low-speed magnetic levitation track beam are realized.

When the track beam is subjected to flexural deformation, along with the upturned beam end, the hinged support is subjected to rotational displacement, longitudinal displacement and vertical displacement, and the simple small longitudinal beam 18 is correspondingly displaced along with the displacement of the hinged support. The vertical displacement of the hinged support drives the two ends of the simple small longitudinal beam 18 to generate equal vertical displacement, and all other components connected with the simple small longitudinal beam 18 generate corresponding vertical displacement, so that the rail surface elevation continuity of the beam seam position after the rail beam is deflected and deformed is ensured; the rotation displacement of the hinged support can freely happen, and the simple small longitudinal beam 18 has no corresponding displacement; the longitudinal displacement of the hinged support is the same as the longitudinal displacement of the whole track beam, and the description is omitted.

It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the invention and is not intended to limit the invention, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.

Claims

1. The utility model provides a well low-speed magnetic levitation bridge large displacement telescoping device's articulated transverse movement device which characterized in that: the large-displacement telescopic device spans a beam seam of the middle-low speed magnetic levitation track traffic track beam;

the beam tops of two beam ends of the adjacent track beams (11) are respectively provided with a tail end track panel structure and a telescopic device support;

a simple small longitudinal beam (18) is arranged between the two corresponding telescopic device supports, one end of the simple small longitudinal beam (18) has a rotational degree of freedom and no sliding degree of freedom, and the other end of the simple small longitudinal beam (18) has the rotational degree of freedom and the sliding degree of freedom in the longitudinal direction of the track beam;

the upper end of the simply supported small longitudinal beam (18) is slidably provided with a modularized telescopic rail panel through a longitudinal beam sliding device;

both sides of the track beam longitudinal direction of the track panel subunit and one side of the tail end track panel structure facing the beam seam are provided with hinged transverse moving devices;

the hinged transverse moving device comprises a double-hinge transverse sliding device (10) and a single-hinge transverse sliding device (7); the track panel subunit is provided with the double-hinge transverse sliding device (10), and the side, facing the beam seam, of the tail end track panel structure is provided with the single-hinge transverse sliding device (7);

the upper edge of the simple small longitudinal beam (18) is provided with a longitudinal sliding groove, the longitudinal sliding groove consists of a longitudinal guide rail (19), a longitudinal guide rail built-in upper sliding plate (21) and a longitudinal guide rail built-in lower sliding plate (22), the length of the longitudinal sliding groove is the same as the longitudinal length of the simple small longitudinal beam (18), the longitudinal guide rail built-in upper sliding plate (21) is embedded and fixed on the inner side of the longitudinal guide rail (19), and the longitudinal guide rail built-in lower sliding plate (22) is embedded and fixed on the upper edge of the simple small longitudinal beam (18) to form a semi-closed longitudinal sliding groove;

the longitudinal beam sliding device comprises longitudinal sliding blocks (20), the longitudinal sliding blocks (20) are fixed at the lower end of each track panel subunit, the arrangement positions of the longitudinal sliding blocks (20) correspond to the positions of the simple supporting small longitudinal beams (18), the longitudinal sliding blocks (20) are of inverted T-shaped cross sections, the lower edges of the longitudinal sliding blocks are clamped in the longitudinal sliding grooves, and accordingly the longitudinal sliding blocks (20) longitudinally slide along the track beams in the longitudinal sliding grooves.

2. The hinged lateral movement device of the medium-low speed magnetic levitation bridge large displacement telescoping device of claim 1, wherein:

the track panel subunit comprises an F track (1) and a cross beam (2);

the F-shaped rail (1) is arranged at two longitudinal ends of the cross beam (2) and is aligned with the F-shaped rail (1) of the tail end rail panel structure.

3. The hinged lateral movement device of the medium-low speed magnetic levitation bridge large displacement telescoping device of claim 1, wherein:

one end of the simple support small longitudinal beam (18) is provided with a circular hole, and the simple support small longitudinal beam is supported on the telescopic device support through a rotating shaft of the telescopic device support and rotates around a rotating shaft of the hinge support; the other end of the simply supported small longitudinal beam (18) is provided with an oblong hole, and the rotating shaft of the telescopic device support is supported on the telescopic device support at the other end and rotates around the rotating shaft of the hinged support and simultaneously moves longitudinally along the oblong hole.

4. The hinged lateral movement device of the medium-low speed magnetic levitation bridge large displacement telescoping device as set forth in claim 2, wherein:

the cross beam (2) is provided with a through hole in the longitudinal direction of the track beam, two ends of the hole are provided with an outer stiffening plate (8) and an inner lining stiffening plate (9), and the double-hinge transverse sliding device (10) is arranged in the hole;

the double-hinge transverse sliding device (10) consists of a central sliding shaft and a sliding sleeve with double-side rotary hinges, wherein the central sliding shaft is fixedly arranged between the outer stiffening plate (8) and the inner stiffening plate (9) along the longitudinal direction of the cross beam, namely the transverse direction of the track beam, and the sliding sleeve with the double-side rotary hinges freely slides along the direction of the central sliding shaft.

5. The hinged lateral movement device of the medium-low speed magnetic levitation bridge large displacement telescoping device of claim 1, wherein:

the web plate of the transverse beam of the tail end track panel structure is provided with a through hole in the longitudinal direction of the track beam, two ends of the hole are provided with an outer stiffening plate (8) and an inner lining stiffening plate (9), and the single-hinge transverse sliding device (7) is arranged in the hole;

the single-hinge transverse sliding device (7) consists of a central sliding shaft and a sliding sleeve with a single-side rotating hinge, wherein the central sliding shaft is fixedly arranged between the outer stiffening plate (8) and the inner stiffening plate (9) along the longitudinal direction of the cross beam, namely the transverse direction of the track beam, and the sliding sleeve with the single-side rotating hinge is positioned on one side facing the track Liang Liangfeng and freely slides along the direction of the central sliding shaft.

6. The hinged lateral movement device of the medium-low speed magnetic levitation bridge large displacement telescoping device of claim 4 or 5, wherein:

the connecting rod device comprises a plurality of X-shaped connecting rods;

the X-shaped connecting rod consists of an inner rotating limb (24) of the X-shaped connecting rod, an outer rotating limb (25) of the X-shaped connecting rod and a rotating shaft of the X-shaped connecting rod;

the middle part of the inner side rotating limb (24) of the X-shaped connecting rod is in a single rod shape, the middle part of the outer side rotating limb (25) of the X-shaped connecting rod is in a double rod shape, and a space for accommodating the rotation of the single rod is arranged between the double rods; the inner rotating limb (24) of the X-shaped connecting rod and the outer rotating limb (25) of the X-shaped connecting rod are free to rotate around the rotating shaft of the X-shaped connecting rod positioned at the intersection point of the inner rotating limb and the outer rotating limb;

both ends of an inner side rotating limb (24) of the X-shaped connecting rod and an outer side rotating limb (25) of the X-shaped connecting rod are respectively hinged to the hinged transverse moving device.

7. The hinged lateral movement device of the medium-low speed magnetic levitation bridge large displacement telescoping device of claim 1, wherein:

the telescopic device support comprises a base plate (14) of the hinge support, a vertical supporting plate (15) of the hinge support and a rotating shaft of the hinge support; the rotation axis of the hinge support is arranged between two vertical support plates (15) of the hinge support.

8. The hinged lateral movement device of the medium-low speed magnetic levitation bridge large displacement telescoping device as set forth in claim 2, wherein:

and waterproof soft plates (23) are arranged between the cross beams (2) of the adjacent two track panel subunits and between the cross beams (2) of the track panel subunits and the cross beams of the tail end track panel structures of the track beams, the length of each waterproof soft plate (23) in the transverse direction of the track beam is equal to the length of the cross beam (2) of the track panel subunits, and the waterproof soft plates (23) are connected with the upper edges of the cross beams.