CN104911964A - Magnetic levitation traffic curve track beam - Google Patents

Abstract

The invention relates to a magnetic levitation track beam and especially relates to a magnetic levitation traffic curve track beam, which comprises a track beam and is characterized in that the magnetic levitation traffic curve track beam also comprises two contact tracks set at two sides of the track beam, a track support platform fixed on a top portion of the track beam and a track mounted on a top portion of the track support platform, wherein the track is turned at a horizontal direction by surrounding an axis thereof and is set in an inclined way; the turning angle of a top face of the track at the horizontal direction is theta; the two contact tracks are set in an inclined way with one high and one low; a connection surface of a center line of the two contact tracks is parallel to the top face of the track; and the track beam is turned to a super high side of the track at the horizontal direction. According to the invention, the structure is simple; compared with the existing technology, the construction difficulties are lowered to a large degree; and the requirement of super high accuracy is easily controlled.

Description

A kind of magnetic floating traffic curve track beam

Technical field

The present invention relates to the design and construction field of magnetic levitation track girder, refer to a kind of magnetic floating traffic curve track beam particularly.

Background technology

Magnetic floating traffic track needs to arrange superelevation in route curve area usually, the object arranging superelevation offsets the centrifugal force of vehicle by producing during curve circuit, ensure vehicle can safely, quick, stablize, meet design speed and economy cosily by circular curve, the pattern that existing techniques in realizing magnetic floats curve track superelevation mainly realizes track superelevation by being in tilted layout by support rail beam.

Method one: utilize the geotechnique basis under support rail beam to realize superelevation, base surface under support rail beam is in tilted layout, support rail beam tilts to lay realization deflection, the contact path of rail level line, vehicle both sides is vertical with rail level line with the structure vertical axis of top surface of the beam line parallel, beam, the design and installation of track can not be affected like this, also can not affect Rail car manufacture parameter.The pattern that curve track realizes superelevation is floated as the patent No. be " CN204325812U " the Chinese utility model patent of by name " middle low speed magnetic suspension traffic engineering is low puts route curve support rail beam " describes a kind of magnetic, this structure is that the concrete floor be in tilted layout realizes superelevation by arranging a upper surface in the below of support rail beam beam body, support rail beam beam body is in tilted layout by base plate, structure is simple, can meet the requirement of track beam, but there is following shortcoming in the method:

1, the bearing surface of reinforced concrete floor needs to water the base surface building up inclination, and it is irregular for building shape, when support rail beam is transitioned into curved section by straightway, beam body axis is by being vertically transitioned into heeling condition gradually, beam body shows as space and reverses, and difficulty of construction is very big, and construction precision is difficult to control;

2, the bearing surface of reinforced concrete floor is in tilted layout, base plate both sides discontinuity, and the operation diseases such as the later stage easily sends out distortion, support rail beam falls into groove, hypervelocity is inadequate, may affect comfortableness and the safety of car operation time serious.

Method two: concrete bed is installed in support rail beam lower end, upper surface is in tilted layout, the lower surface horizontal arrangement of concrete bed is also fixed on building basis, and if the patent No. is " CN202626819U ", the one of Chinese utility model patent introduction of " medium-and low-speed maglev curve track beam " by name realizes superelevation by the reinforced concrete footing bearing surface that is in tilted layout.There is following problem in the method:

1, the lower surface of concrete bed is provided with bearing, and during actual use, the Bearing Seat Force of superelevation side is much larger than the bearing inside track, and under Long-Time Service, the problem of damaging may appear in the bearing of superelevation side;

2, when support rail beam is transitioned into curved section by straightway, beam body axis is by being vertically transitioned into heeling condition gradually, and beam body shows as space and reverses, and difficulty of construction is very big, and construction precision is difficult to control;

In sum, realize track superelevation there is many problems in existing technology by being in tilted layout by support rail beam, a kind of support rail beam of palpus exploitation need not be in tilted layout and just can realize the method for track superelevation.

Summary of the invention

Object of the present invention is exactly to solve that the bearing that the existing techniques in realizing track superelevation mentioned in above-mentioned background technology easily occurs is fragile, difficulty of construction large, construction precision is difficult to the problems such as control, provides a kind of magnetic floating traffic curve track beam.

Technical scheme of the present invention is: a kind of magnetic floating traffic curve track beam, comprises rail beam, it is characterized in that: also comprise be arranged in rail beam both sides two conductor rails, be fixed on the track at rail beam top and be arranged on the steel tie at track top; Described steel tie lateral deflection is in tilted layout, and its end, left and right sides is provided with upper end surface in conplane F type track; Described track upper surface and the angle of horizontal plane are θ; Two described conductor rails are one high and one low to be in tilted layout, and the joint face of two conductor rail axis is parallel with the upper surface of track; Described rail beam is to track superelevation side lateral shift.

Further described steel tie its central spot level height from straightway to curved section remains unchanged.

Further described rail beam is box-beam structure.

Further described track comprises the first bearing and the second bearing that are fixed on rail beam end face; The first described bearing is arranged in the upper surface inside by rail beam, and it is highly less than the second bearing; The second described bearing is arranged in the upper surface outside by rail beam.

Further described rail beam end face lateral deflection angle θ is calculated by following formula:

$\mathrm{\θ}=57.3{\tan }^{-1}\left\{\frac{v^2}{127R}\right\}$

Wherein: v is the speed that train passes through, km/h; R is the radius of curvature of rail beam, m.

Further described rail beam is calculated to the distance, delta of track superelevation side lateral shift by following formula:

Δ＝h sinθ

Wherein: h is the distance between the joint face of two conductor rail axis and track upper surface, mm.

The present invention has the following advantages: the present invention has the following advantages: 1, rail beam of the present invention does not laterally deflect, and structure construction is simple, the difficulty of construction reducing curved section rail beam of high degree;

2, track of the present invention uses the pattern of half superelevation, and concrete superelevation mode is adjusted by the height of support of track, and adjustment modes is convenient and simple.Track adopts reinforced concrete structure, and after track installation is in place, row is built again, more effectively can control the precision of track superelevation deflection;

3, rail beam of the present invention is to superelevation side lateral shift, taken into full account train deflection after and conductor rail between distance, ensure train by time safety and stability;

4, the width of rail beam of the present invention and the width of track corresponding, meet conductor rail and install the requirement of gauge, mounting structure arranges advantages of simple;

5, structure of the present invention is simple, and difficulty of construction has compared to prior art and reduces significantly, and the present invention more easily controls the required precision of superelevation.

Accompanying drawing explanation

Fig. 1: structural representation of the present invention (track transverse cross sectional figure);

Fig. 2: the syndeton schematic diagram of Fig. 1 middle orbit of the present invention and steel tie;

Wherein: 1-rail beam; 2-conductor rail; 3-steel tie; 4-the first bearing; 5-the second bearing; 6-track.

Detailed description of the invention

Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.

As Fig. 1, a kind of magnetic floating traffic curve track beam, comprise rail beam 1, the both sides of rail beam 1 are provided with conductor rail 2, and two conductor rails 2 split the left and right sides of rail beam 1, and (as shown in Figure 1, the left side of drawing is left direction, the right side of drawing is right direction, the upper of drawing is upper direction, and the lower of drawing is lower direction), the joint face of two conductor rail 2 both axis one high and one low and horizontal plane.

The upper end of rail beam 1 is provided with two bearings as track, wherein be positioned at inside rail beam 1 that (inner side of rail beam 1 refers to the side of curve track towards its center of circle, outside refers to the side in the center of circle dorsad, the wherein outside of rail beam 1 and superelevation side) be the first bearing 4, be positioned at outside rail beam 1 is the second bearing 5, the height of the first bearing 4 is less than the height of the second bearing 5, and both upper surfaces are in being in tilted layout.

The upper end of the first bearing 4 and the second bearing 5 is provided with steel tie 3, and steel tie 3 is in tilted layout by the slanted upper end surface bearing of the first bearing 4 and the second bearing 5.As shown in Figure 2, the left and right sides of the upper surface of steel tie 3 is provided with the track 6 of two F types, track 6 provides support force upwards and guiding force to train, the upper surface of track 6 is provided with tablet, train promotes train advance by producing repulsion between linear induction motor that bogie is arranged and tablet, the upper surface of track 6 refers to the upper surface of F type track 6 and steel tie 3 connecting portion, instead of refers to the upper surface of tablet.

Due to being in tilted layout of steel tie 3, two tracks 6 are one high and one low, and form superelevation pattern, the upper end end face of its middle orbit 6 and the angle of horizontal plane are θ, i.e. superelevation angle, can calculate θ according to superelevation formula,

$\mathrm{\θ}=57.3{\tan }^{-1}\left\{\frac{v^2}{127R}\right\}$ Formula 1

Wherein: the radius of curvature-m of v to be speed-km/h, R that train passes through be rail beam 1.

The upper surface of track 6 is parallel with the joint face of the axis of two conductor rails 2, and distance is between the two h, and during practical application, the lower surface of this distance h and train is equal with the distance of conductor rail 2 link, and therefore h can obtain according to the specific design parameter of train.

The superelevation pattern that the present invention adopts is half superelevation, and namely steel tie 3 remains constant in the level height of straightway and its central point of curved section.After track 6 superelevation, track 6 can not change with the relative position of conductor rail 2, and conductor rail 2 becomes closely with the distance of beam body, cannot meet minimal distance requirement between electrical body and structure.

Therefore track 6 is when constructing, and needs the change of the spacing taking into full account track 6 and conductor rail 2.This structure in work progress, by rail beam 1 is laterally offset the correspondence that a distance completes conductor rail 2 and girder construction laterally.As shown in Figure 1, the distance between the center line of rail beam 1 and the center line of track 6 is Δ, and Δ can calculate according to the geometrical relationship of h and θ,

Δ=h sin θ formula 2

Wherein: h is the vertical height between the joint face of the center line of two conductor rails 2 and track 6 end face, mm.

During practical application, the relation between rail beam 1 and track 6 is accurately calculated according to above-mentioned two formula, according to the distance relation between super-high structure pattern fine adjustment conductor rail 2 and girder construction, the control realizing track 6 superelevation by regulating the first bearing 4 and the second bearing 5.

More than show and describe general principle of the present invention, principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and manual just illustrates principle of the present invention; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.

Claims (6)

1. a magnetic floating traffic curve track beam, comprise rail beam (1), it is characterized in that: also comprise be arranged in rail beam (1) both sides two conductor rails (2), be fixed on the track at rail beam (1) top and be arranged on the steel tie (3) at track top; Described steel tie (3) lateral deflection is in tilted layout, and its end, left and right sides is provided with two upper end surfaces in conplane F type track (6); Described track (6) upper surface and the angle of horizontal plane are θ; Two described conductor rails (2) are one high and one low to be in tilted layout, and the joint face of two conductor rail (2) axis is parallel with the upper surface of track (6); Described rail beam (1) is to track (6) superelevation side lateral shift.

2. a kind of magnetic floating traffic curve track beam as claimed in claim 1, is characterized in that: described steel tie (3) its central spot level height from straightway to curved section remains unchanged.

3. a kind of magnetic floating traffic curve track beam as claimed in claim 2, is characterized in that: described rail beam (1) is box-beam structure.

4. a kind of magnetic floating traffic curve track beam as claimed in claim 1, is characterized in that: described track comprises the first bearing (4) and the second bearing (5) that are fixed on rail beam (1) end face; Described the first bearing (4) is arranged in the upper surface by rail beam (1) inner side, and it is highly less than the second bearing (5); Described the second bearing (5) is arranged in the upper surface by rail beam (1) outside.

5. a kind of magnetic floating traffic curve track beam as claimed in claim 1, is characterized in that: described rail beam (1) end face lateral deflection angle θ is calculated by following formula:

$\mathrm{\θ}=57.3{\tan }^{-1}\left\{\frac{v^2}{127R}\right\}$

Wherein: v is the speed that train passes through, km/h; R is the radius of curvature of rail beam (1), m.

6. a kind of magnetic floating traffic curve track beam as claimed in claim 1, is characterized in that: described rail beam (1) is calculated to the distance, delta of track (6) superelevation side lateral shift by following formula:

Δ＝h sinθ

Wherein: h is the distance between the joint face of two conductor rail (2) axis and track (6) upper surface, mm.