Subway mobile contact net

Abstract

The present application belongs to rail transit technical field, and relates to a subway civil air defense mobile contact network, which comprises first and second fixed frames arranged at intervals, and a support frame slidingly connected to the first and second fixed frames. One side of the support frame is provided with a busbar, and the other side is provided with a walking mechanism. The walking mechanism can drive the support frame to move forward and backward, so as to realize the connection of the support frame to the first and second fixed frames, or the disconnection between the first and second fixed frames. The walking mechanism comprises at least two driving motors mounted on the support frame, and a gear meshing with a rack on the first fixed frame is arranged on the output shaft of the driving motor. The present application has the advantages of simple structure, convenient operation, stability and reliability, high positioning accuracy, etc. The contact network can be temporarily disconnected before the emergency closing of the civil air defense door, and can be quickly connected after recovery, without the need for personnel to risk entering the tunnel, thereby greatly improving the safety performance.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of rail transit, and particularly relates to a subway civil air defense mobile contact net. BACKGROUND

[0002] With the rapid development of urban rail transit construction in China, the rigid suspension contact net is widely used. The rigid suspension contact net is a system composed of contact lines embedded in the head-to-tail busbars, and it is an important equipment for power supply of electric railway locomotives and rail transit vehicles. The quality of the rigid suspension contact net directly affects the operation of the locomotives.

[0003] In the construction of urban subway tunnels, civil air defense doors are designed, and anti-flooding doors are designed when the tunnel passes under the river. In the case of war, fire and serious water leakage, the civil air defense door and the anti-flooding door need to be quickly closed to ensure the safety of the tunnel and personnel. However, under the obstruction of the busbar, the civil air defense door and the anti-flooding door cannot be completely closed, and special personnel need to enter the tunnel to remove a section of the busbar at the civil air defense door and the anti-flooding door from the entire contact net system. When the situation is urgent or the water inflow is large, personnel cannot enter the tunnel. Even if personnel can enter the tunnel, due to the existing design problems, the removal and recovery are time-consuming and laborious. SUMMARY

[0004] The present application aims to solve the problem that the existing subway civil air defense contact net is not convenient to disconnect and reconnect. The present application is simple in structure, stable and reliable, high in positioning accuracy, and can temporarily disconnect the contact net before the civil air defense door or the anti-flooding door is closed in emergency, and can quickly connect the contact net after recovery.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present application is as follows: a subway civil air defense mobile contact net, comprising a first fixed frame and a second fixed frame arranged at intervals, and a support frame slidably connected to the first fixed frame and the second fixed frame, wherein one side of the support frame is provided with a busbar, and the other side is provided with a walking mechanism, and the walking mechanism can drive the support frame to move forward and backward, so as to realize the connection between the support frame and the first fixed frame and the second fixed frame, or disconnect the connection between the first fixed frame and the second fixed frame.

[0006] Preferably, the walking mechanism comprises at least two drive motors mounted on the support frame, and a gear meshing with a rack on the first fixed frame is arranged on the output shaft of the drive motor.

[0007] Preferably, a hand crank device is further arranged between the two drive motors between the support frame and the first fixed frame, the hand crank device comprises a rotating shaft, one end of the rotating shaft is used for connecting a rotating wrench, and the other end is meshed with the rack.

[0008] Preferably, a plurality of first supporting rollers are arranged below the side of the supporting frame close to the first and second fixed frames, and the first fixed frame and the second fixed frame are provided with supporting roller grooves matched with the first supporting rollers.

[0009] Preferably, a walking installation plate and a plurality of second supporting rollers are arranged above the side of the supporting frame close to the first and second fixed frames, the second supporting rollers are symmetrically arranged at the front and rear ends of the walking installation plate, and the end of the walking installation plate away from the supporting frame is provided with a plurality of rollers, and the second supporting rollers and the rollers are arranged on the top surface and the outer side surface of the first fixed frame, respectively.

[0010] Preferably, the second supporting rollers are V-shaped supporting rollers, and the top surface of the second fixed frame is provided with a guide strip matched with the V-shaped supporting rollers.

[0011] Preferably, the first fixed frame is provided with a limiting component matched with the two ends of the walking installation plate at the front and rear ends, respectively, for limiting the moving distance of the supporting frame along the first fixed frame.

[0012] After the above technical scheme is adopted, the subway civil air defense mobile contact net provided by the present application has the following beneficial effects:

[0013] The present application realizes the connection and disconnection between the first fixed frame and the second fixed frame through the front and rear movement of the supporting frame, thereby realizing the disconnection and reconnection of the subway contact net in the tunnel, facilitating the emergency closing of the civil air defense door in the tunnel and the normal operation of the traffic after the opening, and ensuring the stability of the operation of the subway civil air defense mobile contact net through the design of two driving motors with two power supply circuits, so that the other power supply circuit can be started when one power supply circuit is disconnected, and the manual disconnection and connection of the contact net are realized through the design of the hand-operated device, so that the contact net can be manually operated in an emergency without power supply or automatic movement and disconnection, and the contact net has good strength and rigidity during operation through the design of the first supporting rollers, the second supporting rollers and the rollers, and the equipment is not deformed after long-term use, the cantilever deformation of the supporting frame is prevented through the design of the second supporting rollers on the top surface of the first fixed frame and the second fixed frame, the contact wire is effectively ensured to be in a straight line during movement through the design of the V-shaped second supporting rollers and the guide strip matched with the second supporting rollers on the second fixed frame. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1It is a structural schematic view of the embodiment one of the present application.

[0015] Figure 2 It is a front view of the embodiment one of the present application. Figure 1

[0016] Figure 3 It is an enlarged schematic view of part structure of the embodiment one of the present application. Figure 1

[0017] Figure 4 It is a structural schematic view of the embodiment two of the present application.

[0018] Figure 5 It is a front view of the embodiment two of the present application. Figure 4

[0019] Wherein: the first fixed frame 1, the second fixed frame 2, the support frame 3, the busbar 4, the walking mechanism 5, the driving motor 6, the rack 7, the gear 8, the hand shaking device 9, the rotating shaft 10, the first supporting roller 11, the supporting roller groove 12, the walking installation plate 13, the second supporting roller 14, the roller 15, the guide strip 16, the limiting assembly 17, the support frame 18, the sliding roller 19. DETAILED DESCRIPTION

[0020] The application will be further described in conjunction with the drawings and specific embodiments, obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative, but not as any limitation on the application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of the present application.

[0021] It should be noted that the terms used herein are only for the purpose of describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form, unless the context clearly indicates otherwise, and it should be understood that when the terms "comprise" and / or "include" are used in the specification, there is a feature, step, operation, device, component and / or combination thereof.

[0022] ​​​The foregoing is considered as illustrative only of the principles of the application. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the application to the exact construction and operation described. Accordingly, all such variations are intended to be included within the scope of the present application as defined in the claims. The application is also not limited to the details of the foregoing embodiment.

[0023] In the description of the present application, it is to be understood that the orientation or positional relationships indicated by terms such as "front", "back", "up", "down", "left", "right", "lateral", "vertical", "horizontal", "top", "bottom", and the like are generally based on the orientation or positional relationships shown in the drawings, and are merely intended to facilitate the description and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore cannot be construed as limiting the scope of protection of the present application. The orientation terms "inner", "outer" refer to the inner and outer relative to the contour of the components themselves.

[0024] For the convenience of description, spatial relative terms such as "over", "above", "upper surface", "upper", and the like can be used herein to describe the spatial positional relationship of one device or feature with respect to other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the devices described in the drawings. For example, if the devices in the drawings are inverted, the device described as "above" or "over" other devices or structures will be positioned "below" or "under" the other devices or structures. Thus, the exemplary term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein are interpreted accordingly.

[0025] In addition, it should be noted that the use of the terms "first", "second", and the like do not have a special meaning, and are merely used to distinguish corresponding parts, and therefore cannot be construed as limiting the scope of protection of the present application.

[0026] Example One

[0027] This embodiment describes a mobile contact network for subway civil defense, such as... Figures 1-3 As shown, a single-line mobile contact network for a tunnel with only one contact wire is installed on a relatively straight tunnel section. It includes a first fixed frame 1 and a second fixed frame 2, which are respectively fixed to the top of the tunnel by hanging columns. The first fixed frame 1 and the second fixed frame 2 are arranged on the same straight line (the first fixed frame 1 and the second fixed frame 2 can also be not on the same straight line and are staggered, as long as the support frame 3 can be supported by the first fixed frame 1 and the second fixed frame 2). The first fixed frame 1 and the second fixed frame 2 are spaced apart from the positions of the tunnel air-raid shelter doors (the air-raid shelter doors can be lowered from above or pushed out from the side, and the distance between the first fixed frame and the second fixed frame is slightly greater than the thickness of the air-raid shelter door). That is, the first fixed frame 1 is set on one side of the air-raid shelter door by hanging columns, and the second fixed frame 2 is set on the other side of the air-raid shelter door by hanging columns. A first fixed busbar and a second fixed busbar are respectively provided at the ends of the first fixed frame 1 and the second fixed frame 2 that are away from each other.

[0028] This embodiment also includes a support frame 3 slidably connected to the first fixed frame 1 and the second fixed frame 2. One end of the support frame 3 is connected to the busbar 4 via an insulator. A contact wire is provided in the groove at the lower end of the busbar 4. The other end is provided with a traveling mechanism 5. The traveling mechanism 5 can drive the support frame 3 to move back and forth, thereby realizing the connection between the support frame 3 and the first fixed frame 1 and the second fixed frame 2, or disconnecting the connection between the first fixed frame 1 and the second fixed frame 2. During the process of the support frame 3 driving the busbar 4 to move back and forth, the first fixed busbar and the second fixed busbar can be connected or disconnected. Furthermore, when the first fixed busbar and the second fixed busbar are connected through the busbar 4, the two ends of the contact wire of the busbar 4 have a certain length of overlap with the contact wires of the first fixed busbar and the second fixed busbar, respectively, which can ensure stable power supply when vehicles pass by. Preferably, the contact wire of the busbar 4 is designed to be about 25 meters long, the transition length between the two ends and the fixed contact network is about 5 to 7 meters, the width of the reserved air-raid shelter door is about 0.5 meters, and the insulator is about 0.5 meters away from the top of the tunnel.

[0029] Specifically, the walking mechanism 5 comprises at least two driving motors 6 mounted on the support frame 3, so that the support frame 3 has two driving power sources, which can ensure that another power source can be started when one power source loop is broken, thereby ensuring the stability of the subway mobile contact net during operation. The driving motor 6 is provided with a gear 8 engaged with a rack 7 on the first fixed frame 1 on the output shaft of the driving motor 6. By forward and reverse rotation of the driving motor 6, the driving gear 8 moves forward and backward along the rack 7, thereby realizing the forward and backward movement of the support frame 3. The driving motor 6 has an automatic starting and braking function, which is used to realize the automatic operation of the support frame 3 driving the busbar 4 to move forward and backward and the position locking after connection or disconnection. The support frame 3 is further provided with a hand crank device 9 between the two driving motors 6. The hand crank device 9 comprises a rotating shaft 10, one end of which is used to connect a rotating wrench, and the other end is engaged with the rack 7. Through the design of the hand crank device 9, the contact net has the functions of manual disconnection and connection, and can be manually operated in an emergency without power supply or automatic movement and disconnection. A plurality of first idlers 11 are arranged below the side of the support frame 3 close to the first fixed frame 1 and the second fixed frame 2. The first fixed frame 1 and the second fixed frame 2 are provided with idler grooves 12 matched with the first idlers 11. A walking mounting plate 13 and a plurality of second idlers 14 are arranged above the side of the support frame 3 close to the first fixed frame 1 and the second fixed frame 2. The plurality of second idlers 14 are symmetrically distributed at the front and rear ends of the walking mounting plate 13. A plurality of rollers 15 are arranged at the end of the walking mounting plate 13 away from the support frame 3. The second idlers 14 and the rollers 15 are arranged on the top surface and the outer side surface of the first fixed frame 1, respectively. Through the design of the first idlers 11, the second idlers 14 and the rollers 15, the contact net has good strength and rigidity during operation, and the equipment does not deform after long-term use. Since the first fixed frame 1 and the second fixed frame 2 are arranged on the same straight line, and the second idlers 14 are located on the top surface of the first fixed frame 1, when the support frame 5 moves to the second fixed frame 2, the second idlers 14 are also located on the top surface of the second fixed frame 2. Through the design that the second idlers 14 are located on the top surfaces of the first fixed frame 1 and the second fixed frame 2, the cantilever deformation of the support frame 3 can be prevented. The second idlers 14 are "V"-shaped idlers. The top surface of the second fixed frame 2 is provided with a guide strip 16 matched with the "V"-shaped idlers, which can effectively ensure that the contact wire is in a straight line during movement. The first fixed frame 1 is provided with a limiting component 17 matched with the two ends of the walking mounting plate 13 at the front and rear ends, respectively, for limiting the distance of the support frame 3 moving forward and backward along the first fixed frame 1.

[0030] It should be noted that the second idler roller 14 is not limited to a "V" shaped design. Those skilled in the art can make various structural modifications, as long as the second idler roller 14 and the guide strip 16 have a matching structure that can effectively ensure that the contact line is in a straight line during movement. No specific limitations are made here.

[0031] In this embodiment, when a mobile contact network for subway civil defense is used, the first fixed busbar, the second fixed busbar, and the busbar 4 on the support frame 3 are all used to provide power for the train's operation. Initially, the support frame 3 is connected to both the first fixed frame 1 and the second fixed frame 2, and the busbar 4 connects to both the first and second fixed busbars at both ends. The train is running normally, and at this time, the support frame 3 is located below the civil defense door, which cannot be closed. When an emergency occurs in the tunnel requiring the civil defense door to be closed, the walking mechanism 5 drives the support frame 3 along the first fixed frame 1 away from the second fixed frame 2. The fixed frame 2 moves to the limiting piece 17 at the end away from the second fixed frame 2. At this time, the busbar 4 moves completely to the side of the first fixed frame 1 and disconnects from the second fixed busbar, that is, the mobile contact network is disconnected, and the air-raid shelter door can automatically fall from top to bottom. When the tunnel is restored, the air-raid shelter door opens, and the traveling mechanism 5 drives the support frame 3 to move along the first fixed frame 1 towards the limiting piece 17 at the end near the second fixed frame 2. At this time, the support frame 3 returns to the initial position, and the busbar 4 connects the first fixed busbar and the second fixed busbar at both ends, and the mobile contact network is reconnected.

[0032] Example 2

[0033] This embodiment of a mobile contact network for subway civil defense is basically the same in structure as Embodiment 1, except that, as shown in the following... Figures 4-5 As shown, a dual-line mobile contact network for a tunnel with two contact lines (upper and lower) is installed in a relatively straight tunnel section. The two contact lines are symmetrically arranged on the left and right, each including a first fixed frame 1 and a second fixed frame 2 arranged at intervals. The symmetrical fixed frames share a common crossbeam and are fixed to the top of the tunnel by a hanging column to ensure that the weight on both sides can be balanced. The support frames 3 of the two contact lines can move simultaneously or separately, which can be set by electrical control according to actual needs.

[0034] It should be noted that, in order to further ensure the stability of the structure, the bottom of the second fixing frame 2 is also provided with a support frame 18 that extends outward and matches the bottom of the first fixing frame 1. The first fixing frame 1 is provided with a sliding roller 19 that cooperates with the support frame. Those skilled in the art can design other structures as long as they can achieve the effect of enhancing strength and rigidity, and no specific restrictions are made here.

[0035] In summary, the subway civil air defense mobile contact network has the advantages of simple structure, convenient operation, stability and reliability, high positioning accuracy, etc., can temporarily disconnect the contact network before the civil air defense door or the flood prevention door or the fire door is closed in emergency, and can quickly connect the contact network after recovery, without personnel risking entering the tunnel, greatly improving the safety performance.

[0036] The above merely describes the preferred embodiments of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can make equivalent replacements or changes within the technical range disclosed by the present application according to the technical solution and the inventive concept of the present application, which should be covered within the protection scope of the present application.

Claims

1. A mobile contact network for subway civil defense, characterized in that: The system includes a first fixed frame (1) and a second fixed frame (2) spaced apart, and a support frame (3) slidably connected to the first fixed frame (1) and the second fixed frame (2). The support frame (3) has a busbar (4) on one side and a traveling mechanism (5) on the other side. The traveling mechanism (5) can drive the support frame (3) to move back and forth, thereby connecting the support frame (3) to the first fixed frame (1) and the second fixed frame (2), or disconnecting the connection between the first fixed frame (1) and the second fixed frame (2). The support frame (3) has multiple first rollers (11) located below the side closest to the first fixed frame (1) and the second fixed frame (2). The first fixed frame (1) and the second fixed frame (2) are equipped with... The idler (11) has a matching idler groove (12). The support frame (3) is provided with a traveling mounting plate (13) and a plurality of second idlers (14) on the side near the first fixed frame (1) and the second fixed frame (2). The plurality of second idlers (14) are symmetrically distributed at the front and rear ends of the traveling mounting plate (13). The end of the traveling mounting plate (13) away from the support frame (3) is provided with a plurality of rollers (15). The second idlers (14) are set on the top surface of the first fixed frame (1). The rollers (15) are set on the outer side of the first fixed frame (1). The second idlers (14) are "V" shaped idlers. The top surface of the second fixed frame (2) is provided with guide strips (16) that match the "V" shaped idlers.

2. The mobile contact network for subway civil defense as described in claim 1, characterized in that: The walking mechanism (5) includes at least two drive motors (6) mounted on the support frame (3), and the output shaft of the drive motor (6) is provided with a gear (8) that meshes with the rack (7) on the first fixed frame (1).

3. The mobile contact network for subway civil defense as described in claim 2, characterized in that: A hand crank device (9) is also provided between the support frame (3) and the first fixed frame (1). The hand crank device (9) is located between the two drive motors (6). The hand crank device (9) includes a rotating shaft (10). One end of the rotating shaft (10) is used to connect to a rotating wrench, and the other end is engaged with a rack (7).

4. The mobile contact network for subway civil defense as described in claim 1, characterized in that: The first fixed frame (1) is provided with limiting components (17) at its front and rear ends, which are matched with the two ends of the walking mounting plate (13) to limit the distance that the support frame (3) moves back and forth along the first fixed frame (1).

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