阅读说明：本技术 一种轮轨结构悬挂式prt道岔结构及其转辙方法 (Wheel-rail structure suspension type PRT turnout structure and switching method thereof ) 是由 张耀平 陈春 刘宇 李胜善 于 2019-11-25 设计创作，主要内容包括：本发明公开一种轮轨结构悬挂式PRT道岔结构及其转辙方法,包括钢轨、移动心轨和岔心；移动心轨的尾端通过转动结构安装在岔心端头处,移动心轨的前端能够通过转动结构在两条岔线外轨之间水平摆动,移动心轨工作边踏面根据与其配合构成岔线的岔线外轨工作边形状确定,通过移动心轨摆动分别与两条岔线外轨搭配构成岔线轨道,从而使通过转向架悬挂系悬挂在轨道下方的车辆可以无障碍通过和经由道岔进行转向或并线行驶；移动心轨跟岔线外轨紧密贴合,有害空间小,车轮过岔时撞击、振动小。(The invention discloses a wheel track structure suspension type PRT turnout structure and a switching method thereof, wherein the wheel track structure suspension type PRT turnout structure comprises a steel rail, a movable point track and a turnout center; the tail end of the movable point rail is arranged at the end of the switch point through a rotating structure, the front end of the movable point rail can horizontally swing between the two outer rails of the switch line through the rotating structure, the working side tread of the movable point rail is determined according to the shape of the working side of the outer rail of the switch line which is matched with the working side tread to form the switch line, and the movable point rail swings to be respectively matched with the two outer rails of the switch line to form the switch line rail, so that vehicles which are suspended below the rail through a bogie suspension system can pass through the switch line without obstacles and can be steered or run in parallel through the switch line; the movable point rail is tightly attached to the outer rail of the turnout line, the harmful space is small, and the wheels have small impact and vibration when passing the turnout.)

1. The utility model provides a wheel rail structure suspension type PRT switch structure which characterized in that: comprises a steel rail (1), a movable point rail (3) and a fork point (4);

the steel rail (1) comprises a main line rail (11) and two branch line outer rails (12), the two branch line outer rails (12) are respectively connected with the two rails of the main line rail (11), the branch point (4) is positioned between the two branch line outer rails (12), the tail end (4) of the movable point rail (3) is installed at the end of the branch point (4) through a rotating structure, and the front end (33) of the movable point rail (3) can horizontally swing between the two branch line outer rails (12) through the rotating structure;

when the front end (33) of the movable point rail (3) moves to one side of one of the branch line outer rails (12), the front end is engaged and locked with the inner side of the branch line outer rail (12), and the working side tread surface of the inner side of the movable point rail (3) has the same shape as the working side tread surface of the inner side of the other separated branch line outer rail (12).

2. The wheel-track structure suspended PRT turnout structure of claim 1, wherein: the shape of the front end (33) of the movable point rail (3) is calculated according to the principle of minimizing the harmful space when the movable point rail is meshed with the outer rail (12) of the branch line.

3. The wheel-track structure suspended PRT turnout structure of claim 2, wherein: the front end (33) of the movable point rail (3) is provided with a positioning clamping groove or a clamping device, and the corresponding position on the inner side of the fork line outer rail (12) is provided with the clamping device or the clamping groove for fixing the movable point rail (3) when in meshing.

4. The wheel-track structure suspended PRT turnout structure of claim 2, wherein: the tail end (34) of the movable point rail (3) is provided with a rotating shaft or a rotating gear, and the fork core (4) at the corresponding position is provided with a driving motor for driving the rotating shaft or the rotating gear to rotate.

5. The wheel-track structure suspended PRT turnout structure according to any one of claims 1-4, wherein: the turnout line is of a symmetrical bifurcation structure, and the two turnout line outer rails (12) are symmetrical in structure and are symmetrically distributed on two sides of the turnout center (4); the treads on both sides of the movable center rail (3) are concave curved treads, and the concave curved treads on both sides are respectively determined according to the shape of the working edge treads on the inner side of a branch line outer rail (12) which is matched with the movable center rail (3) to form a branch line rail.

6. The wheel-track structure suspended PRT turnout structure according to any one of claims 1-4, wherein: the turnout line is of a straight line turning side line branching structure, one turnout line outer rail (12) is a straight line extension line of one rail of the main track, and the other turnout line outer rail (12) deviates from the other rail of the main track and extends towards one side at a certain angle; the tread of one side of the movable center rail (3) close to the linear branch line outer rail (12) is a linear tread, the tread of the other side of the movable center rail is a concave curved tread, and the concave curved shape of the tread is determined according to the shape of the tread of the working edge at the inner side of the other branch line outer rail (12).

7. The wheel-track structure suspended PRT turnout structure according to any one of claims 1-4, wherein: the front end (33) of the movable point rail (3) is locked by an elastic pin or an electromagnet.

8. The wheel-track structure suspended PRT turnout structure according to any one of claims 1-4, wherein: the movable point rail (3) is formed by cutting an I-shaped steel rail.

9. The wheel-track structure suspended PRT turnout structure according to any one of claims 1-4, wherein: the steel rail (1) is an I-shaped light steel rail.

10. A switching method of a suspended PRT switch structure of a wheel track structure according to claims 1-9, characterized by comprising the steps of:

the method comprises the following steps: the initial state is that the branch line B is in an open state, the front end (33) of the movable point rail (3) is locked at the inner side of the outer rail of the branch line A, and the front end (33) of the movable point rail (3) is unlocked;

step two: the rotating structure arranged at the fork point (4) drives the movable point rail (3) to rotate and swing, so that the front end (33) of the movable point rail (3) is turned to the outer rail close to the rail end of the fork line B;

step three: the front end of the movable point rail (3) is locked at the inner side of the outer rail of the branch line B, and the line opening state is changed into a 'positive line-branch line A' state, so that the vehicle enters the branch line A from the positive line or enters the positive line rail from the branch line A.

Technical Field

The invention belongs to the technical field of intelligent urban traffic, and particularly relates to a suspended PRT turnout structure with a wheel track structure and a switching method thereof.

Background

The PRT (personal Rapid transit) urban intelligent traffic system is an effective way for realizing door-to-door and transfer-free travel, and is expected to solve increasingly serious urban traffic jam. The automatic control system is basically characterized in that 2-6 passengers are carried by vehicles, the urban overhead is mainly used, and the automatic control system is unmanned and fully automatically operated. The PRT urban traffic generally employs an elevated beam guide rail system (elevated rail), which can be divided into a top-supported type, a suspended type and a side-hung type.

The piggyback PRT, i.e., the transport vehicle, is located above the overhead beams and rails, such as the morgan dun PRT (Morgantown PRT, West Virginia University), United kingdom hisro Airport PRT (Heathrow PRT, Heathrow Airport, London), alligator abbazabi PRT (massar PRT, Abudhabi, United Arab emerates), korean sunday PRT (sunkeneon Bay PRT), used as established in 1975. The patent application "city trackless and rail network PRT car" (CN201410096971) relates to a high-rise PRT. The Xian Qujiang monorail train is also a self-supporting PRT urban traffic system in nature.

The side-hung PRT is characterized in that bidirectional vehicles share one track beam, the side surfaces of two sides of the track beam are respectively provided with a track, and the vehicles are hung on the track to run.

The suspended PRT is characterized in that the PRT vehicle travels suspended under a track beam. The patent application "a bogie structure of a PRT suspension train and a running system containing the same" (CN201711336997) relates to a suspension type PRT, and Skytran and Metrino also belong to the suspension type PRT.

There are two basic forms of existing PRT track beams, one being concrete beams, such as the korean ascending PRT; the other is a box beam, such as a Simian Qujiang monorail. In any form of PRT, there is a need for lane changing and lane changing of vehicles. In the bolster PRT, a Simian Qujiang monorail adopts a turnout translation switching mode; the Shelter airport PRT is a vehicle autonomous guiding lane changing mode.

In the suspension type PRT, the patent application 'a direction control wheel for a suspension type railway vehicle' (CN201820043278.0) relates to an autonomous rail transfer device of a PRT vehicle.

The traditional railway, like the existing high-speed rail, is essentially a deck structure, and the rail is guided by the coupling action of the steel rail and the wheel rim, and the rail change and the switch of the vehicle are realized through the turnout. A typical railroad switch includes a point rail, a switch point, and a switch mechanism. The switch rail is characterized in that a harmful space is positioned at a fork center, and two switch rails are always positioned in a track center; when one point rail is in the open line direction, i.e. in the working state, the other point rail (in the idle state) still passes through the center of the track in the open line direction and exists. For a conventional railway of the deck type, this switch arrangement is certainly suitable. The conventional railroad switch structure is not suitable for underslung suspended PRTs using a wheel track structure because the vehicle is suspended below the track by a suspension system.

In order to make the wheel-track structure suitable for the suspension type PRT urban traffic system, a brand new turnout and a switching mode thereof need to be created and designed.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention aims to provide a suspended type PRT turnout structure with a wheel track structure and a switching method thereof, which are simple in structure, so that the suspended type PRT vehicle with the wheel track structure can realize bifurcation operation, smooth switching and track change.

In order to achieve the purpose, the invention adopts the technical scheme that:

a suspended PRT turnout structure with a wheel rail structure comprises a steel rail, a movable point rail and a turnout center;

the steel rails comprise a main line rail and two branch line outer rails, the two branch line outer rails are respectively connected with the two rails of the main line rail, the fork is positioned between the two branch line outer rails, the tail end of the movable center rail is arranged at the end of the fork through a rotating structure, and the front end of the movable center rail can horizontally swing between the two branch line outer rails through the rotating structure;

when the front end of the movable point rail moves to one side of one of the branch line outer rails, the front end of the movable point rail is engaged and locked with the inner side of the branch line outer rail, and at the moment, the working edge tread surface on the inner side of the movable point rail is the same as the shape of the working edge tread surface on the inner side of the other separated branch line outer rail.

Further, the shape of the front end of the movable point rail is calculated according to the principle of minimizing the harmful space when the movable point rail is engaged with the outer rail of the branch line.

Furthermore, the front end of the movable point rail is provided with a positioning clamping groove or a clamping device, and the corresponding position on the inner side of the outer rail of the fork line is provided with a clamping device or a clamping groove for fixing the movable point rail when in meshing.

Furthermore, a rotating shaft or a rotating gear is arranged at the tail end of the movable point rail, and a driving motor for driving the rotating shaft or the rotating gear to rotate is arranged on the fork point at the corresponding position.

Furthermore, the turnout line is of a symmetrical bifurcation structure, and the two turnout line outer rail structures are symmetrical and symmetrically distributed on two sides of the turnout center; the treads on both sides of the movable center rail are concave curved treads, and the concave curved treads on both sides are respectively determined according to the shape of the working edge treads on the inner side of the turnout outer rail which is matched with the movable center rail to form the turnout rail.

Furthermore, the turnout is of a straight line turning side line branching structure, one turnout outer rail is a straight line extension line of one rail of the main track, and the other turnout outer rail deviates from the main track and the other rail of the main track and extends to one side at a certain angle; the tread of one side of the movable center rail, which is close to the outer rail of the straight line bifurcation, is a straight tread, the tread of the other side of the movable center rail is a concave curved tread, and the concave curved shape of the tread is determined according to the shape of the tread of the working edge at the inner side of the outer rail of the other bifurcation.

Furthermore, the front end of the movable center rail is locked by an elastic pin or an electromagnet.

Furthermore, the movable center rail is formed by cutting an I-shaped steel rail.

Furthermore, the steel rail is an I-shaped light steel rail.

A switching method of a suspended PRT turnout structure of a wheel track structure comprises the following steps:

the method comprises the following steps: the initial state is that the turnout line B is in an open state, the front end of the movable point rail is locked at the inner side of the outer rail of the turnout line A, and the front end of the movable point rail is unlocked;

step two: the rotating structure arranged at the fork point drives the movable point rail to rotate and swing, so that the front end of the movable point rail is turned to the position, close to the rail end, of the outer rail of the fork line B;

step three: the front end of the movable point rail is locked at the inner side of the outer rail of the branch line B, and then the line opening state is changed into a 'positive line-branch line A' state, and the vehicle enters the branch line A from the positive line or enters the positive line rail from the branch line A.

The invention has the beneficial effects that:

the turnout structure is characterized in that the movable center rails capable of swinging are arranged on the two outer turnout line rails, the working side treads of the movable center rails are determined according to the shapes of the working sides of the outer turnout line rails which are matched with the movable center rails to form the turnout lines, and the movable center rails are respectively matched with the two outer turnout line rails through swinging to form the turnout line rails, so that a vehicle suspended below the rails through a bogie suspension system can pass through the turnout lines without obstacles and can be steered or run in parallel through the turnout; compared with the traditional turnout structure, the turnout structure has the advantages that only one point rail can be moved in a swinging mode, so that vehicles hung below the rails can turn or run in parallel through the turnout without obstacles; the movable point rail is tightly attached to the outer rail of the turnout line, the harmful space is small, and the wheels have small impact and vibration when passing the turnout.

The concave curved edge shape of the movable point rail is obtained by geometric transformation based on an imaginary crossing continuous curve, so that the vehicle can be ensured to smoothly pass through the turnout, and safety and reliability are ensured.

The shape of the concave curved edge at the front end of the movable point rail is obtained by cutting off the base curve of the movable point rail and rotating, so that the movable point rail can be tightly attached to the inner side of the outer rail of the turnout line, the harmful space left by the movable point rail obtained by cutting and rotating through geometric transformation is minimized, the impact is reduced when the wheel passes the turnout, and the vibration is reduced.

Drawings

FIG. 1 is a schematic plan view of a symmetrical bifurcated single-turnout and a double-concave curved moving point rail;

FIG. 2 is a cross-sectional view of a suspended PRT urban traffic system having a wheel-track configuration;

FIG. 3 is an elevation view of a suspended PRT urban transportation system having a wheel and rail configuration;

FIG. 4 is a schematic perspective view of a symmetrical bifurcated single-open turnout and a double-concave curved moving point rail;

FIG. 5 is a schematic perspective view of a symmetrical bifurcated single-turnout and a double-concave curved moving point rail;

FIG. 6 is a schematic plan view of a moving rail with a single-sided concave curved tread surface in a straight-through state;

FIG. 7 is a schematic plan view of a movable center rail with a single-sided concave curved tread surface when a branch line is opened;

FIG. 8 is a schematic diagram of a derivation process and principle of a biconcave moving heart rail;

FIG. 9 is a schematic diagram of the transformation, cutting and forming process of the dual concave curved moving core track geometry;

in the figure: the track comprises a steel rail 1, a main track 11, a branch outer track 12 and a branch outer track 13, wherein the main track is connected with the branch outer track; 2 is a wheel; 3 is a moving point rail, 31 is a branch line B imaginary rail, 32 is a branch line A imaginary rail, 33 is a front end, and 34 is a rear end; 4 is the frog center; 5 is a suspended PRT vehicle bogie; 6 is a vehicle passenger cabin; 7 is a harmful space of the turnout; and 8, a track beam.

Detailed Description

The present invention will be described in further detail with reference to the following examples, which are not intended to limit the invention thereto.

As shown in fig. 1, 2 and 3, the suspended PRT turnout structure with the wheel track structure of the invention comprises a steel rail 1, a movable point track 3 and a turnout center 4.

As shown in fig. 2 and 3, the steel rail 1 is an i-shaped light steel rail, the top of the cross section of the steel rail is composed of a group of curves, the steel rail 1 comprises a main track 11 and two branch outer rails 12, the two branch outer rails 12 are respectively connected with the two tracks of the main track 11, the fork 4 is positioned between the two branch outer rails 12, the weight grade of the steel rail 1 is 9-12 kg/m, and the steel rail 1 is laid on the lower chord of the opening of the track beam 8. The wheel 2 is a steel wheel or made of alloy materials, is provided with a cam edge and a wheel tread, and has a diameter of 200-300 mm. The track gauge of the two steel rails is 200-500 mm, and the cam edges and the wheel treads are coupled and used on the top and the inner side faces of the inner sides of the steel rails.

The tail end 4 of the movable point rail 3 is arranged at the end of the fork 4 through a rotating structure, and the fork 4 is arranged on the lower chord of the track beam 8 and is fixed; the front end 33 of the movable point rail 3 can horizontally swing between the two branch line outer rails 12 through a rotating structure; the rotating structure specifically comprises a rotating shaft or a rotating gear arranged at the tail end (fixed end) 34 of the movable core rail 3, and a driving motor arranged on the fork 4 at the corresponding position and used for driving the movable core rail 3 to rotate left and right so as to determine the opening direction of the line bifurcation.

When the front end 33 of the movable point rail 3 moves to one side of one of the branch line outer rails 12, the movable point rail is engaged and locked with the inner side of the branch line outer rail 12, and the inner working edge tread surface of the movable point rail 3 has the same shape as the inner working edge tread surface of the other separated branch line outer rail 12.

The basic forms of the turnout comprise a single turnout and a double turnout, wherein the single turnout can be divided into two situations of symmetrical bifurcation and straight-through turning of a side line.

When the lines are in symmetrical bifurcation layout, the corresponding single turnout is also in symmetrical bifurcation form, and the two outer turnout tracks 12 of the turnout are symmetrical in structure and are symmetrically distributed on two sides of the turnout center 4; the moving core rail 3 is a double concave curved moving core rail and is provided with double concave curved tread surfaces, and concave curved lines on two sides of the tread surfaces are respectively determined according to the shape of the tread surfaces on the working side of the inner side of the turnout outer rail 12 which is matched with the moving core rail 3 to form the turnout rail. The double concave curved moving point rail is shown as b in fig. 4, 5 and 9, and has double concave curved tread surfaces, namely two concave curved tread surfaces are respectively arranged at two sides of the moving point rail 3, the concave curve is a circular curve or a gentle curve (the curvature is gradually changed), and the radius is determined by calculating the vehicle crossing speed.

As shown in fig. 6 and 7, when the route is a straight-through route to branch route, one of the branch outer rails 12 is a straight extension line of one rail of the main track, and the other branch outer rail 12 extends to one side at an angle from the other rail of the main track; the tread of the moving center rail 3 close to one side of the straight line fork line outer rail 12 is a straight tread, the tread of the other side of the moving center rail is a concave curved tread, and the concave curved shape of the tread is determined according to the shape of the tread of the working edge at the inner side of the other fork line outer rail 12.

As shown in fig. 8 and 9, the biconcave moving point rail is obtained by rotating and merging the imaginary rail 32 of the branch line a and the imaginary rail 31 of the branch line B in opposite directions, reserving the inner arcs of the respective rail surfaces, and cutting the respective arc back lines; then, according to the principle of minimizing the harmful space when the double-concave curved moving point rail is engaged with each branch line, geometric transformation is carried out to obtain the shape arrangement of the front end (moving end) 33 of the moving point rail 3.

Fig. 8 a is a schematic diagram of a turnout zone and a turnout line imaginary rail; b is a diagram showing the movement of the imaginary rail 32 of the branch line A and the imaginary rail 31 of the branch line B; c is a schematic view of the virtual rail 32 of the branch line a and the virtual rail 31 of the branch line B after being rotationally combined.

As shown in a in fig. 9, the geometrical transformation process of cutting the arc back lines of the imaginary rail 32 of the branch line A and the imaginary rail 31 of the branch line B and reserving the inner arc lines of the respective rail surfaces is carried out; b is a schematic view of the double concave curved moving point rail and its curvature, front end 33.

The front end 33 of the movable point rail 3 is provided with a positioning clamping groove or a clamping device, and the inner side of the steel rail at the corresponding position is provided with a clamping device or a clamping groove for fixing the movable point rail 3 to prevent sliding and loosening.

For the single turnout exemplified by the scheme, the movable point rail 3 of the invention has a remarkable difference from the traditional railway turnout switch tongue, namely the movable point rail 3 only has one movable component, and concave curved treads at two sides of the movable point rail are used for two vehicles in a bifurcation direction to run and are used for the single turnout of suspension type PRT traffic with a wheel track structure. Conventional railroad switch rails have two movable switch rails, each of which has only one side that is a working side and the other side that is a non-working side.

The turnout switching method and the working method of the invention are explained according to two embodiments of symmetrical forked turnouts and straight-through line side-turning turnouts, which are as follows:

1. a symmetrical bifurcation switch method.

As shown in fig. 1 and 4, both sides of the moving core rail 3 are concave curves (gentle curves), the initial line opening state is "positive line-branch line B", at this time, the front end 33 of the moving core rail 3 is locked at the outer rail end (the end connected with the positive line, namely the tangent point of the curve) of the branch line a, and the vehicle can enter the branch line B from the positive line or enter the positive line from the branch line B. When a positive line PRT vehicle is about to enter a cross line A, the following steps are carried out:

the method comprises the following steps: the locking device is opened at the front end 33 of the moving point rail 3.

Step two: the driving motor arranged on the fork 4 is started, and the rotating gear drives the movable point rail 3 to rotate and swing, so that the front end of the movable point rail 3 is turned to the outer rail close to the rail end of the fork line B.

Step three: the front end of the movable point rail 3 is locked at a corresponding fixture (a clamping groove) at the inner side of the outer rail of the branch line B, and the circuit opening state is changed into a positive line-branch line A state.

Step four: the vehicle enters the branch line a from the main line, or enters the main line (straight direction) from the branch line a.

The front end 33 of the moving point rail 3 can be locked by an elastic pin, an electromagnet or other locking methods.

2. The straight line changes the side switch.

As shown in fig. 6, the movable point rail 3 is of a single-side concave curve shape, the initial line opening state is that a positive line is opened, at this time, the front end of the movable point rail 3 is locked at a corresponding fixture (a clamping groove) at the inner side of the outer rail of the branch line B, and the vehicle can only run on the positive line, that is, the positive line passes through. The wheels on one side of the movable point rail 3 are coupled and contacted with the linear side of the movable point rail 3 for rolling running. When a positive line PRT vehicle is about to enter a cross line B, the following steps are carried out:

the method comprises the following steps: the locking device is opened at the front end 33 of the moving point rail 3.

Step two: the driving motor arranged on the fork 4 is started, and the rotating gear drives the moving point rail 3 to rotate and swing, so that the front end 33 of the moving point rail 3 is turned to the outer rail of the positive line.

Step three: the front end 33 of the movable point rail 3 is locked at a corresponding fixture (a clamping groove) at the inner side of the positive line outer rail, and the line opening state is changed into a 'positive line-branch line B' state.

Step four: the vehicle enters the branch line B from the positive line, or enters the positive line from the branch line B.

The turnout principle and structure with the movable point rail 3 can be applied to a suspension type PRT traffic system which is provided with rubber tires and is automatically guided by the guide wheels on the upper side of the vehicle, the problem of suspension of the wheels when the vehicle passes through the turnout is solved, and the harmful space is reduced.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.