CN217601101U - Locking device, turnout and rail transit system - Google Patents

Abstract

The utility model discloses a locking device, switch and track traffic system, locking device includes: the locking seat is arranged on a guide rail of the turnout and is provided with a locking groove; the tapered end, the tapered end with the walking beam of switch links to each other, the tapered end with locking groove complex latched position and break away from locking the unblock position of groove between portable. The locking device of this application can be used for restricting the removal of walking beam, and when the walking beam formed the driving passageway that switches on with arbitrary fixed beam cooperation, the locking device of this application can lock its activity of walking beam restriction, strengthens this driving passageway's stability, and the locking device of this application can also unblock the walking beam, thereby makes the walking beam can move about to other positions and switch the driving passageway.

Description

Locking device, turnout and rail transit system

Technical Field

The application relates to the technical field of rail transit, in particular to a locking device, a turnout and a rail transit system.

Background

In the turnout in the related art, a movable beam is arranged between two fixed beams, and the movable beam is driven to move between the two fixed beams through a driving mechanism so as to switch different travelling channels. The movable beam is movably arranged between the two fixed beams and is provided with a first position and a second position, and when the movable beam is positioned at the first position, the movable beam is matched with one fixed beam to form a communicated travelling crane channel; when the movable beam is at the second position, the movable beam is matched with the other fixed beam to form a communicated travelling crane channel. Because the rail vehicle needs stable driving conditions when driving on the driving channel, the driving channel formed when the movable beam is matched with any fixed beam needs higher stability, namely, the stability of the movable beam when the rail vehicle drives is higher.

SUMMERY OF THE UTILITY MODEL

The present application is directed to solving at least one of the problems in the prior art. Therefore, an object of the present invention is to provide a locking device, which can be used to limit the movement of a movable beam, and when the movable beam cooperates with any fixed beam to form a conductive driving channel, the locking device can lock the movable beam to limit its movement, and enhance the stability of the driving channel.

The application also provides a turnout with the locking device.

The application also provides a rail transit system with the turnout.

According to the locking device of this application embodiment, include: the locking seat is arranged on a guide rail of the turnout and is provided with a locking groove; the tapered end, the tapered end with the walking beam of switch links to each other, the tapered end with locking groove complex latched position and break away from locking the unblock position of groove between portable.

According to the locking device of the embodiment of the application, the lock head is arranged on the movable beam capable of moving, and the locking seat is arranged on the fixed guide rail, so that when the movable beam moves to a position where the lock head is opposite to the locking groove, the lock head can move to the locking position matched with the locking groove to limit the movement of the lock head, so that the movement of the movable beam connected with the lock head is limited, and the stability of the movable beam is enhanced; correspondingly, the lock head can also move to an unlocking position separated from the locking groove, so that the movable beam can move to other positions. The utility model provides a locking device is through setting up the locking seat on the guided way, and when making the walking beam activity to the position that the tapered end just is locking the groove, the walking beam can be locked in this position, consequently can all set up the locking seat in the first position and in the second position corresponding to the walking beam on the guided way to make the walking beam can lock in first position or second position, the stability of the walking beam when reinforcing supplies rail vehicle to travel.

In one embodiment of the present application, the locking device further comprises: and the locking device driving piece drives the lock head to move between the locking position and the unlocking position, and is connected with the movable beam.

In one embodiment of the present application, the locking device drive is configured as a locking cylinder, the telescoping rod of the locking cylinder being connected to the locking head.

In one embodiment of the application, the locking cylinder is connected with the movable beam through a locking cylinder support, and the lock head is fixed on the movable beam through a lock head seat.

In an embodiment of the present application, a locking head hole through which the locking head passes is provided on the locking head seat, and a first wear-resistant plate is provided on an inner circumferential wall of the locking head hole.

In one embodiment of the application, a second wear-resistant plate is arranged on the inner peripheral wall of the locking groove, one end of the second wear-resistant plate, which is far away from the guide rail, is configured as a guide section, and the inner diameter of the guide section is gradually increased in the direction far away from the guide rail

In one embodiment of the present application, the locking device further comprises: the locking device comprises a first position sensor and a second position sensor, wherein the first position sensor is suitable for detecting that the movable beam moves to a preset position, and the second position sensor is suitable for detecting the matching condition of the lock head and the locking groove.

According to this application embodiment's switch, including at least one monomer switch, monomer switch includes: a fixed beam, the fixed beam comprising: a first edge beam and a second edge beam; the movable beam is movably arranged between the first side beam and the second side beam to limit two switchable travelling channels, and the top surface of the movable beam is configured into a first travelling surface for travelling wheels of the railway vehicle to travel; the walking beam includes: the movable beam is connected with the other end of the rotating beam and moves along a preset path; a guide rail, the guide rail comprising: a first guide rail configured as a linear guide rail and a second guide rail, the first guide rail being disposed below the traveling beam, and the traveling beam traveling on the first guide rail along the preset path; the second guide rail is configured as a linear guide rail, the second guide rail is arranged below the moving beam, and the moving beam can move along the preset path on the second guide rail; the locking device of the above technology is used for locking the movable beam when the traveling passage is defined, and the locking seat is arranged on the first guide rail or the second guide rail.

According to this application embodiment's rail transit system, including rail vehicle and the switch in the above-mentioned technique, rail vehicle is last to be provided with walking wheel and leading wheel, it is suitable for to walk the wheel and roll on the top surface of walking beam and the top surface of fixed beam, the leading wheel is suitable for first boundary beam with the walking beam rolls on the side just right each other or rolls on the walking beam with the side just right each other of second boundary beam.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

Drawings

The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic diagram of a branch provided in an embodiment of the present application.

Fig. 2 is a schematic view of a movable beam in the embodiment of the present application.

Fig. 3 is a front view of a locking device in an embodiment of the present application.

Fig. 4 is a cross-sectional view of a locking device in an embodiment of the present application.

Fig. 5 is a schematic structural diagram of a locking structure in an embodiment of the present application.

Fig. 6 is a schematic view of a rail vehicle in an embodiment of the present application.

Reference numerals are as follows: 100. a locking device; 110. a locking seat; 111. a locking groove; 112. a second wear plate; 1121. a guide section; 120. a lock head; 130. a locking cylinder; 131. a telescopic rod; 140. locking the cylinder bracket; 141. a support plate; 150. a lock head seat; 151. a first wear plate; 160. a first position sensor; 170. a second position sensor; 200. a single turnout; 210. a fixed beam; 211. a first edge beam; 212. a second edge beam; 220. a movable beam; 221. a turning beam; 2211. a center of rotation; 222. a moving beam; 230. a guide rail; 231. a first guide rail; 232. a second guide rail; 300. a rail vehicle; 310. a running wheel; 320. a guide wheel.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

In a turnout in the related art, a movable beam is arranged between two fixed beams, and a driving mechanism drives a sliding beam to move between the two fixed beams so as to switch different travelling channels. The movable beam is movably arranged between the two fixed beams and provided with a first position and a second position, and when the movable beam is positioned at the first position, the movable beam is matched with one fixed beam to form a communicated travelling crane channel; when the movable beam is at the second position, the movable beam is matched with the other fixed beam to form a communicated travelling crane channel. Because the rail vehicle needs stable driving conditions when driving on the driving channel, the driving channel formed when the movable beam is matched with any fixed beam needs higher stability, namely, the stability of the movable beam when the rail vehicle drives is higher.

The application provides a locking device, and the locking device is used for locking a movable beam when a traffic channel is limited. For example, when the movable beam moves to the first position, the movable beam and one of the fixed beams define a first running channel, and the locking device can lock the movable beam so that the first running channel is kept stable; when the movable beam moves to the second position, the movable beam and the other fixed beam define a second travelling crane channel, and the locking device can lock the movable beam at the moment so that the second travelling crane channel is kept stable.

A lock device 100 according to an embodiment of the present application is described below with reference to fig. 1 to 6.

Referring to fig. 1 to 4, a locking device 100 according to an embodiment of the present application includes at least: a lock base 110 and a lock head 120. The locking seat 110 is arranged on a guide rail 230 of the turnout, and the locking groove 111 is arranged on the locking seat 110. The guide rail 230 of the switch is a track for defining a moving track of the movable beam 220 in the switch structure, the movable beam 220 can move along the extending direction of the guide rail 230, the guide rail 230 is fixed, and therefore the locking seat 110 provided on the guide rail 230 is also fixed. The tapered end 120 is connected to the movable beam 220 of the switch, the tapered end 120 moves along with the movement of the movable beam 220, and the tapered end 120 is used for cooperating with the locking groove 111 to limit the movement of the movable beam 220 connected to the tapered end 120. The locking head 120 may be moved to a locking position cooperating with the locking groove 111, i.e., a position where the locking head 120 is inserted into the locking groove 111; the locking head 120 may also be moved to an unlocked position out of the locking slot 111.

It should be understood that, in order to achieve the locking effect of the locking device 100, the moving direction of the locking head 120 when engaging with the locking groove 111 cannot be parallel to the extending direction of the guide rail 230, and the moving direction of the locking head 120 when engaging with the locking groove 111 is at an angle to the extending direction of the guide rail 230. Preferably, the direction of movement of the locking head 120 when engaged with the locking groove 111 is perpendicular to the direction of extension of the guide rail 230. When the locking head 120 is in the locking position, the locking groove 111 is matched with the locking head 120 to limit the movement of the locking head 120 in the extending direction of the guide rail 230, so that the movement of the movable beam 220 on the guide rail 230 is limited, and the effect of locking the movable beam 220 is achieved.

According to the locking device 100 of the embodiment of the application, the locking head 120 is arranged on the movable beam 220 which can move, and the locking seat 110 is arranged on the fixed guide rail 230, so that when the movable beam 220 moves to a position where the locking head 120 faces the locking groove 111, the locking head 120 can move to a locking position matched with the locking groove 111, the movement of the locking head 120 is limited, the movement of the movable beam 220 connected with the locking head 120 is limited, and the stability of the movable beam 220 is enhanced; correspondingly, the lock head 120 can also be moved to an unlocking position where the lock head is disengaged from the locking groove 111, so that the movable beam 220 can be moved to other positions. The locking device 100 of the application enables the movable beam 220 to be movable to the position where the locking head 120 is just opposite to the locking groove 111 by arranging the locking seat 110 on the guide rail 230, the movable beam 220 can be locked at the position, and therefore the movable beam 220 can be correspondingly arranged at the first position and the locking seat 110 at the second position on the guide rail 230, so that the movable beam 220 can be locked at the first position or the second position, and the stability of the movable beam 220 when the rail vehicle 300 runs is enhanced.

It will be appreciated that movement of the lock head 120 between the locked and unlocked positions requires a drive mechanism to actuate, and thus, in one embodiment of the present application, the locking device 100 further includes a locking device actuator that actuates movement of the lock head 120 between the locked and unlocked positions, the locking device actuator also being coupled to the moveable beam 220 and moving with the movement of the moveable beam 220. The locking head 120 is driven by the locking device driving member to move to the locking position engaged with the locking groove 111 or to move to the unlocking position disengaged from the locking groove 111, thereby enhancing convenience and reliability of the locking device 100. And the locking device driving member is also connected to the movable beam 220, so that only one locking device driving member needs to be provided, and the locking device driving members can drive the locking head 120 to move when the movable beam 220 moves to different positions, thereby reducing the cost of the locking device 100.

Alternatively, in one embodiment of the present application, the locking device driving part is configured as a locking cylinder 130, and the telescopic direction of the telescopic bar 131 of the locking cylinder 130 is parallel to the moving direction when the locking head 120 is inserted into the locking groove 111. The telescopic rod 131 of the locking cylinder 130 is connected to the locking head 120. Specifically, the lock head 120 is configured as a long strip structure with a rectangular cross section, the length direction of the lock head 120 is parallel to the telescopic direction of the telescopic rod 131 of the locking cylinder 130, and the locking cylinder 130 is disposed on one side of the lock head 120 away from the locking seat 110 and is fixedly connected with one end of the lock head 120 away from the locking seat 110. In this embodiment, the extension rod 131 of the locking cylinder 130 is fixedly connected to the lock head 120 through a pin. The locking cylinder 130 may be an air cylinder or a hydraulic cylinder, and the driving device may be a linear driving motor as long as the telescopic rod 131 can move in a linear direction.

When the movable beam 220 moves to a position where the locking head 120 faces the locking groove 111, the locking cylinder 130 can drive the telescopic rod 131 to extend out, and the telescopic rod 131 pushes the locking head 120 to enable the locking head 120 to be inserted into the locking groove 111 to reach a locking position, so that the movable beam 220 is locked, and the movement of the movable beam 220 is limited; when the locking cylinder 130 drives the telescopic rod 131 to retract, the telescopic rod 131 pulls the lock head 120 to enable the lock head 120 to be separated from the locking groove 111 to reach the unlocking position, so that the movable beam 220 is unlocked, and the movable beam 220 can be moved to other positions.

In one embodiment of the present application, the locking cylinder 130 is connected to the movable beam 220 by the locking cylinder bracket 140, which enhances the stability of the locking cylinder 130. The locking head 120 is fixed on the movable beam 220 through the locking head seat 150, so that the moving stability of the locking head 120 is enhanced.

Specifically, in the present embodiment, the locking cylinder bracket 140 includes two support plates 141 spaced apart from each other, the two support plates 141 are connected to the movable beam 220, and the locking cylinder 130 is installed between the two support plates 141, but it should be understood that the configuration of the locking cylinder bracket 140 is not limited to the support plates 141, and may be other configurations that support the locking cylinder 130, such as a support frame, a support column, and the like.

In one embodiment of the present application, the lock cylinder seat 150 is provided with a lock cylinder hole for the lock cylinder 120 to pass through, and an inner circumferential wall of the lock cylinder hole is provided with a first wear plate 151. Wear between the lock cylinder 120 and the lock cylinder receptacle 150 during movement is reduced by the first wear plate 151.

In one embodiment of the present application, the second wear plate 112 is disposed on an inner circumferential wall of the locking groove 111, and wear between the locking head 120 and the locking groove 111 is reduced by the second wear plate 112. One end of the second wear plate 112, which is far away from the guide rail 230, is a guide section 1121, and the inner diameter of the guide section 1121 gradually increases in the direction far away from the guide rail 230, so that the locking head 120 can be conveniently and quickly positioned in the locking groove 111, and the locking head 120 can be quickly matched with the locking groove 111. When the moving position of the movable beam 220 deviates, the lock head 120 is guided by the guide segment 1121 to enter the locking groove 111, that is, the movable beam 220 can be guided to move to a designated position and locked at the position, so that the reliability of the turnout structure is enhanced.

Referring to fig. 5, in one embodiment of the present application, the locking device 100 further includes: a first position sensor 160 adapted to detect the movement of the movable beam 220 to a preset position, and a second position sensor 170 adapted to detect the engagement of the locking head 120 with the locking groove 111. For example, the first position sensor 160 may detect whether the movable beam 220 is moved to the first position or the second position, and the second position sensor 170 may detect the engagement state of the locking head 120 with the locking groove 111.

Referring to fig. 1, 2 and 3, the present embodiment also provides a switch, which includes at least one single switch 200 according to the present embodiment. The single turnout 200 includes: the fixed beam 210 comprises a first side beam 211 and a second side beam 212 which are oppositely arranged, the movable beam 220 is movably arranged between the first side beam 211 and the second side beam 212 to define two switchable traffic lanes, and the top surface of the movable beam 220 is configured as a first running surface for the running wheels 310 of the railway vehicle 300 to run.

For example, when the movable beam 220 is in the first position, the movable beam 220 defines a first lane with the first side beam 211, and when the movable beam 220 is in the second position after being moved, the movable beam 220 defines a second lane with the second side beam 212. It should be noted that the top surfaces of the first side beam 211 and the second side beam 212 are configured as running surfaces on which the rail vehicle 300 runs, and two sets of running wheels on the rail vehicle 300 may run on the top surface of the movable beam 220 and the top surface of the first side beam 211, respectively, or on the top surface of the movable beam 220 and the top surface of the second side beam 212, respectively.

The first side rail 211 and the second side rail 212 do not intersect and overlap each other and extend along the traveling direction of the railway vehicle 300, and since different traveling directions of the railway vehicle 300 can be selected at the single turnout 200, the first side rail 211 and the second side rail 212 can respectively extend along different traveling directions. The movable beam 220 can move between the first side beam 211 and the second side beam 212, and during the movement of the movable beam 220, the single turnout 200 can present two lanes, wherein each lane guides the track vehicle 300 in different directions, and only one of the two lanes can be used for the track vehicle 300 to pass at the same time, thus indicating that the two lanes are switchable.

The movable beam 220 includes: the turning beam 221 and the transfer beam 222 are provided with a turning center 2211 at one end of the turning beam 221, and the turning beam 221 can turn around the turning center 2211. The movable beam 222 is pivotally connected to the other end of the rotary beam 221, the rotary beam 221 can rotate around the rotation center 2211, and the movable beam 222 can perform a translational motion and drive the rotary beam 221 to rotate. Since the other end of the turning beam 221 is connected to the transfer beam 222, the moving trace of the portion of the transfer beam 222 connected to the turning beam 221 is the same as the moving trace of the other end of the turning beam 221.

Since the transfer beam 222 is connected to the other end of the turning beam 221, and thus the movement locus of one end of the transfer beam 222 connected to the turning beam 221 is the same as that of the other end of the turning beam 221, the transfer beam 222 may be influenced by the movement of the other end of the turning beam 221 to form an arc-shaped predetermined path, and the transfer beam 222 may be moved along the predetermined path.

The guide rail 230 includes: a first guide rail 231 and a second guide rail 232, the first guide rail 231 being configured as a linear guide rail, the first guide rail 231 being disposed below the traveling beam 222, and the traveling beam 222 being movable on the first guide rail 231 along a predetermined path.

Meanwhile, the moving beam 222 can translate on the first guide rail 231, and a moving track of one end of the moving beam 222, which is connected to the rotating beam 221, is an arc shape, so as to ensure that the moving beam 222 does not interfere with the first guide rail 231, and therefore, the moving beam 222 can also move in a direction orthogonal to the extending direction of the first guide rail 231, and the moving track of the moving beam 222 is obtained by combining a moving track of the moving beam 222 in the extending direction of the first guide rail 231 and a moving track of the moving beam 222 in a direction orthogonal to the extending direction of the first guide rail 231. Thus, the predetermined path of the travel beam 222 is also arcuate.

The second guide rail 232 is configured as a linear guide rail, the second guide rail 232 is disposed below the traveling beam 222, and the traveling beam 222 is movable along a predetermined path at the second guide rail 232. The second guide rail 232 and the first guide rail 231 may support the traveling beam 222 together, improving the traveling stability of the traveling beam 222.

The switch according to the embodiment of the present application further includes a locking device 100 of the above-mentioned technology, the locking device 100 is used for locking the movable beam 220 when defining the service passage, and the locking seat 110 is disposed on the first guide rail 231 or the second guide rail 232.

Alternatively, the locking head 120 may be disposed below the turning beam 221 and also below the transfer beam 222.

Specifically, the lock head 120 is disposed below the movable beam 222, two lock seats 110 are disposed, each of the two lock seats 110 is disposed on the first guide rail 231 toward one side of the lock head 120 and spaced along the length direction of the first guide rail 231, and the two lock seats 110 are respectively located at the first position and the second position corresponding to the movable beam 220. When the lock head 120 is inserted into the lock seat 110 close to the first edge beam 211, the movable beam 220 is in the second position, and a second traffic channel is defined between the movable beam 220 and the second edge beam 212; when the lock head 120 is inserted into the lock seat 110 adjacent to the second side beam 212, the movable beam 220 is in the first position, and a first driving passage is defined between the movable beam 220 and the first side beam 211.

In the switch of the present application, the locking device 100 of the present application is provided, so that the movable beam 220 can be locked in the first position or the second position, thereby enhancing the firmness of the movable beam 220 when the railway vehicle 300 travels, and thus enhancing the stability of the switch.

The embodiment of the application also provides a rail transit system, and the rail transit system according to the embodiment of the application comprises the turnout in the technology.

Referring to fig. 6, in one embodiment of the present application, the rail transit system further includes: the track vehicle 300 is provided with traveling wheels 310 and guide wheels 320, and the traveling wheels 310 can be two sets and roll on the top surfaces of the first side beam 211 and the movable beam 220 respectively or roll on the top surfaces of the movable beam 220 and the second side beam 212 respectively; the guide wheels 320 are also provided in two sets, and the guide wheels 320 are adapted to roll on the sides of the first side beam 211 and the movable beam 220 facing each other or on the sides of the movable beam 220 and the second side beam 212 facing each other.

The rail transit system has the turnout, so that the movable beam 220 can be locked at the first position or the second position, the firmness degree of the movable beam 220 when the rail vehicle 300 runs is enhanced, the stability of the turnout is enhanced, and the running stability of the rail vehicle 300 is enhanced.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

In the description of the present application, "the first feature" and "the second feature" may include one or more of the features.

In the description of the present application, "a plurality" means two or more.

In the description of the present application, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact via another feature therebetween.

In the description of the present application, the first feature being "on," "over" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature.

In the description herein, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims (9)

1. A locking device, comprising:

the locking device comprises a locking seat (110), wherein the locking seat (110) is arranged on a guide rail (230) of a turnout, and a locking groove (111) is arranged on the locking seat (110);

the locking head (120), locking head (120) with walking beam (220) of switch link to each other, locking head (120) with locking groove (111) complex latched position and break away from locking groove (111) between the unblock position portable.

2. The locking device of claim 1, further comprising: a locking device actuator for actuating the locking head (120) between the locked position and the unlocked position, the locking device actuator being coupled to the moveable beam (220).

3. The locking device according to claim 2, characterized in that the locking device drive is configured as a locking cylinder (130), the telescopic rod (131) of the locking cylinder (130) being connected to the locking head (120).

4. A locking arrangement as claimed in claim 3, characterised in that the locking cylinder (130) is connected to the travelling beam (220) by a locking cylinder bracket (140), the locking head (120) being secured to the travelling beam (220) by a locking head (120) seat.

5. A locking arrangement according to claim 4, wherein the seat of the locking head (120) is provided with a locking head (120) bore through which the locking head (120) passes, the inner circumferential wall of the locking head (120) bore being provided with the first wear plate (151).

6. A locking arrangement according to claim 1, characterised in that a second wear plate (112) is provided on the inner circumferential wall of the locking groove (111), the end of the second wear plate (112) remote from the guide rail (230) being configured as a guide section (1121), the inner diameter of the guide section (1121) increasing progressively in a direction away from the guide rail (230).

7. The locking device of claim 1, further comprising: a first position sensor (160) adapted to detect the movement of the movable beam (220) to a predetermined position and a second position sensor (170) adapted to detect the engagement of the locking head (120) with the locking groove (111).

8. A switch, characterized in that it comprises at least one single switch (200), said single switch (200) comprising:

a stationary beam (210), the stationary beam (210) comprising: a first edge beam (211) and a second edge beam (212);

the movable beam (220) is movably arranged between the first side beam (211) and the second side beam (212) to define two switchable travelling channels, and the top surface of the movable beam (220) is configured as a first travelling surface for travelling wheels (310) of a railway vehicle (300);

the movable beam (220) includes: the device comprises a rotating beam (221) and a moving beam (222), wherein one end of the rotating beam (221) is provided with a rotating center (2211), the rotating beam (221) can rotate around the rotating center (2211), and the moving beam (222) is connected with the other end of the rotating beam (221) and moves along a preset path;

a guide rail (230), the guide rail (230) comprising: a first guide rail (231) and a second guide rail (232), the first guide rail (231) being configured as a linear guide rail (230), the first guide rail (231) being disposed below the moving beam (222), and the moving beam (222) moving on the first guide rail along the preset path; the second guide rail (232) is configured as a linear guide rail (230), the second guide rail (232) is disposed below the moving beam (222), and the moving beam (222) is movable on the second guide rail (232) along the preset path;

the locking device of any one of claims 1 to 7 for locking the travelling beam (220) when defining the traffic channel, the locking seat (110) being provided on the first guide rail (231) or the second guide rail (232).

9. A rail transit system comprising a rail vehicle (300) and a switch as claimed in claim 8, said rail vehicle (300) being provided with running wheels (310) and guide wheels (320), said running wheels (310) being adapted to roll on the top face of said movable beam (220) and on the top face of the fixed beam (210), said guide wheels (320) being adapted to roll on the side faces of said first side beam (211) and said movable beam (220) facing each other or on the side faces of said movable beam (220) and said second side beam (212) facing each other.

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