An easy-to-maintain external electrical cabinet for subway vehicles

Abstract

This invention relates to an easily maintainable external electrical cabinet for subway vehicles, belonging to the field of electrical cabinet technology. One side and bottom of this design are open. When a subway vehicle needs to undergo dual signaling system upgrades or intelligent system modifications, the open side of this design is placed against the end wall of the subway vehicle, while the bottom is fixed to the ground. This creates an external space for electrical components within the subway vehicle. The electrical components inside the cabinet can connect to the existing electrical components of the subway vehicle through the open side and bottom. This external electrical cabinet fully utilizes the edge space within the subway car, greatly facilitating electrical upgrades of existing subway systems and reducing upgrade costs. When maintenance is required, personnel can access the cabinet from three different locations: the main inspection door, the secondary inspection door, and the cover plate. This convenient operation improves maintenance efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of electrical cabinet technology, and in particular relates to an external electrical cabinet for easy maintenance of subway vehicles. Background Technology

[0002] With societal development, people's demands for travel efficiency, convenience, and safety continue to rise, leading more and more passengers to choose rail transit, especially the faster subway system. Against this backdrop, an increasing number of subway lines are adopting dual signaling systems to further ensure the safety and stability of subway operations.

[0003] For example, Beijing Metro Line 14 deployed both domestically produced CASCO and Thales systems for technical verification and redundancy backup; Shanghai Metro Line 10 used dual signaling systems to ensure operational reliability under high passenger flow pressure; and the Guangzhou Zhujiang New Town Core Area Municipal Transportation Project Passenger Automated Transport System, as Guangzhou Metro's first fully automated driving line, also used dual signaling systems to ensure its operational safety.

[0004] To implement a dual signaling system, the common approach is to upgrade the signaling system of a single-signaling subway car, which requires adding electrical components. Currently, most electrical components inside subway cars are installed in the wall partitions between the end walls or under the seats. The wall partitions typically house a large number of electrical components responsible for key functions such as control signal transmission and power distribution, while the areas under the seats generally house battery packs, inverters, and other components. The layout of electrical components in these areas is compact and rational, leaving almost no extra space for upgrading to a dual signaling system.

[0005] Therefore, a new technical solution is urgently needed among existing technologies to solve this problem. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide an external electrical cabinet that is easy to maintain for subway vehicles, so as to solve the technical problem of where to put the newly added electrical components when the dual signaling system is upgraded or the intelligent system is upgraded on the subway.

[0007] An easily maintainable external electrical cabinet for subway vehicles includes a rectangular frame welded together from carbon steel vertical beams and horizontal beams, forming a top surface, a bottom surface, two symmetrically arranged large sides, and two symmetrically arranged small sides. A main inspection door is fixedly installed on one side of the frame of one of the large sides. One long side of the main inspection door is hinged to the rectangular frame, and a lock is fixedly installed on the other long side of the main inspection door, locking or unlocking it to the rectangular frame. A secondary inspection door is fixedly installed on the frame of the adjacent small side. One long side of the secondary inspection door is hinged to the cuboid frame, and a lock is fixedly installed on the other long side of the secondary inspection door, which locks or opens the cuboid frame. A sealing plate is installed on the small side opposite the secondary inspection door. The sealing plate is fixedly and sealed to the cuboid frame. A cover plate is provided on the top surface. The cover plate is a movable cover plate. A cover plate clamp is provided on one side of the cover plate, and a lock is installed on the other side of the cover plate. The cover plate is clamped to the carbon steel beam on the top surface through the cover plate clamp and locked or opened by the lock. The opposite and bottom surfaces of the main inspection door are open.

[0008] This utility model discloses an external electrical cabinet for easy maintenance in subway vehicles. The cross-section of the carbon steel vertical beam and the carbon steel horizontal beam on one side of the cover plate lock is a square with an opening at one corner, and the opening side has a wing plate.

[0009] This utility model discloses an external electrical cabinet for easy maintenance in subway vehicles, wherein the main inspection door and the secondary inspection door are both hinged to the cuboid frame via concealed hinges.

[0010] This utility model discloses an external electrical cabinet for easy maintenance in subway vehicles, wherein all locks are four-corner locks.

[0011] Through the above design scheme, this utility model can bring the following beneficial effects:

[0012] When upgrading or intelligentizing a subway system with dual signaling systems, this utility model utilizes the open side of an easily maintainable external electrical cabinet for subway vehicles, positioned close to the end wall. This design leverages the interior edge space of the car to provide a rational and orderly arrangement for newly added electrical components. This significantly expands the utilization rate of the car's interior space and eliminates the need for extensive modifications to the original electrical component layout, avoiding potential risks associated with large-scale adjustments. This utility model enables the upgrading or intelligentization of the subway vehicle's electrical system with dual signaling systems with minimal modifications to the vehicle structure. This reduces the amount of engineering work, minimizes interference with normal subway operations, and further enhances the operational efficiency of the subway electrical system through the easy disassembly and maintenance of the electrical cabinet. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0014] Figure 1 This is a schematic diagram of an external electrical cabinet for easy maintenance of subway vehicles according to the present invention.

[0015] Figure 2 This utility model relates to the connection between the main inspection door and the carbon steel vertical beam of an external electrical cabinet for easy maintenance of subway vehicles.

[0016] Figure 3 This is a cross-sectional view of the carbon steel vertical beam and the carbon steel horizontal beam on one side of the cover plate lock of an external electrical cabinet for easy maintenance of subway vehicles according to the present invention.

[0017] Figure 4 This is a detailed drawing of the top cover plate of an external electrical cabinet for easy maintenance of subway vehicles according to the present invention;

[0018] In the diagram, 1-rectangular frame, 2-main inspection door, 3-concealed hinge, 4-corner lock, 5-secondary inspection door, 6-sealing plate, 7-cover plate, 101-carbon steel vertical beam, 102-carbon steel horizontal beam, 103-top surface, 104-bottom surface, 105-large side, 106-small side, 107-wing plate, 701-cover plate clamp. Detailed Implementation

[0019] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Two points need to be noted: First, although this embodiment is mainly used for the electrical system modification of subway vehicles, it is also applicable to other transportation vehicles that need to expand the space for electrical components, such as light rail. Second, the frame in this embodiment is a cuboid because it takes into account the needs of standardized design and production, and at the same time facilitates the arrangement and wiring of internal electrical components. When used in other situations, the shape of the frame can be changed according to actual needs. For example, it can be changed to a cube frame. In this case, the large side 105 and the small side 106 have the same area and no further distinction is needed.

[0020] like Figure 1The diagram illustrates an easily maintainable external electrical cabinet for subway vehicles, comprising a rectangular frame 1. The rectangular frame 1 is formed by welding bent carbon steel vertical beams 101 and carbon steel horizontal beams 102 end-to-end, providing mounting surfaces for a main inspection door 2, a secondary inspection door 5, a sealing plate 6, and a cover plate 7. The welded rectangular frame 1 has a top surface 103, a bottom surface 104, a large side surface 105, and a small side surface 106. A main inspection door 2 is fixedly installed on one side of the frame on the large side surface 105. One long side of the main inspection door 2 is hinged to the rectangular frame 1, optionally via a concealed hinge 3, allowing the main inspection door 2 to rotate around the axis of the concealed hinge 3. A lock is fixedly installed on the other long side of the main inspection door 2, locking or unlocking it to the rectangular frame 1. The lock is preferably a four-corner lock 4. When the main access door 2 needs to be opened, the four-corner lock 4 is rotated at a certain angle using the key. The locking mechanism of the four-corner lock 4 onto the mounting frame is lifted, allowing the main access door 2 to rotate and open around the axis of the concealed hinge 3. Considering the size of the electrical cabinet, to ensure a secure installation of the main access door 2 and the cuboid frame 1, it is advisable to have three concealed hinges 3. To balance convenience during maintenance and safety during daily vehicle operation, it is advisable to have three four-corner locks 4. The number of concealed hinges 3 and four-corner locks 4 can also be selected according to actual needs.

[0021] A secondary inspection door 5 is fixedly installed on the frame of a small side 106 adjacent to the main inspection door 2. The connection between the secondary inspection door 5 and the cuboid frame 1 is the same as that between the main inspection door 2 and the cuboid frame 1, also a hinge. The hinge can also be achieved through a concealed hinge 3, allowing the secondary inspection door 5 to rotate around the axis of the concealed hinge 3. A lock is fixedly installed on the other long side of the secondary inspection door 5, and is used to lock or unlock the cuboid frame 1. The lock is preferably a four-corner lock 4. The way to open the secondary inspection door 5 is the same as that to open the main inspection door 2, and will not be described again here. For the same reasons as with the main inspection door 2, the number of concealed hinges 3 and four-corner locks 4 on the secondary inspection door 5 should preferably be 3, but the number can be selected according to actual needs.

[0022] A sealing plate 6 is installed on the opposite side of the secondary inspection door 5. The sealing plate 6 is fixedly and sealed to the cuboid frame 1. The connection method can be welding or fixing it to the cuboid frame 1 with countersunk nails. The number of countersunk nails should be selected as needed according to the size of the sealing plate 6. Considering the size of the electrical cabinet, the number of countersunk nails should be 10.

[0023] A cover plate 7 is provided on the top surface 103 side. The cover plate 7 is a movable cover plate, such as... Figure 4As shown, a cover plate 701 is provided on one side of the cover plate 7, and a lock is installed on the other side. The cover plate 7 is engaged with the carbon steel beam 102 of the top surface 103 through the cover plate 701 and locked or opened by the lock. The lock is preferably a four-corner lock 4. Considering the size of the electrical cabinet, the number of cover plate 701 and four-corner lock 4 should preferably be 2. Users can also choose according to their actual needs.

[0024] In order to provide a mounting surface for the concealed hinge 3 in the cuboid frame 1, the cross-sectional shape of the carbon steel vertical beam 101 and the carbon steel horizontal beam 102 on the lock side of the cover plate 7 should preferably be as follows: Figure 3 The device shown has a U-shaped opening at one corner, with a wing plate 107 on the opening side. A concealed hinge 3 is fixedly connected to the wing plate 107. When the main inspection door 2, secondary inspection door 5, and cover plate 7 are locked, the wing plate 107 is engaged between the corresponding door panel and the locking plates of the four corner locks 4, preventing the inspection doors and cover plates from opening. To allow the components placed inside this external electrical cabinet to connect with the original vehicle components, the opposite side and bottom surface 104 of the main inspection door 2 are open, allowing connecting wires to enter the internal space of the electrical cabinet from the open side and bottom surface 104 as needed.

[0025] To ensure the installation strength and safe use of this external electrical cabinet, all mounting components should preferably be made of carbon steel and coated with insulating and anti-corrosion material as needed. To prevent external moisture, dust, impurities, and other contaminants from entering the electrical cabinet, appropriate sealing measures should be taken on the cuboid frame 1 on one side of the main inspection door 2, secondary inspection door 5, and cover plate 7, preferably by installing dustproof sealing strips. The electrical cabinet should be tightly connected to the ground and end wall of the subway vehicle. After installation, except for the bottom surface 104 and the open side with the cable entry surface, all other surfaces should be closed. If the electrical cabinet requires heat dissipation, ventilation windows or vents can be opened at appropriate locations on the closed surfaces, provided that the safety of the electrical cabinet is ensured.

[0026] The working principle of this utility model is as follows: When a dual-signal system or intelligent upgrade is required for a subway car, the open side of this external electrical cabinet is placed close to the end wall of the subway car, and the bottom surface 104 is fixedly installed on the ground of the subway car, forming an external electrical component placement space inside the subway car. The upgrade personnel place the electrical components that need to be expanded into this external electrical cabinet. The components inside this external electrical cabinet can be connected to the original electrical components of the subway car through the open side and bottom surface 104, making full use of the edge space inside the car and reducing upgrade costs. When maintenance is required, maintenance personnel can use a key to open the four corner locks and perform maintenance on the external electrical cabinet from three different locations: the main maintenance door 2, the secondary maintenance door 5, and the cover plate 7, as needed. This convenient operation further improves maintenance efficiency.

Claims

1. An easily maintainable external electrical cabinet for subway vehicles, comprising a cuboid frame (1), the cuboid frame (1) being welded end-to-end by carbon steel vertical beams (101) and carbon steel horizontal beams (102) to form a top surface (103), a bottom surface (104), two symmetrically arranged large side surfaces (105) and two symmetrically arranged small side surfaces (106); a main inspection door (2) is fixedly installed on one side of the frame of the large side surface (105), one long side of the main inspection door (2) is hinged to the cuboid frame (1), and a lock is fixedly installed on the other long side of the main inspection door (2) and locked or opened by the lock to the cuboid frame (1); characterized in that: A secondary inspection door (5) is fixedly installed on the frame of a small side (106) adjacent to the main inspection door (2); one long side of the secondary inspection door (5) is hinged to the cuboid frame (1), and a lock is fixedly installed on the other long side of the secondary inspection door (5) and locked or opened by the lock to the cuboid frame (1); a sealing plate (6) is installed on the small side (106) opposite to the secondary inspection door (5); the sealing plate (6) is fixedly connected to the cuboid frame (1). The sealing connection is provided; a cover plate (7) is provided on the top surface (103); the cover plate (7) is a movable cover plate, a cover plate clamp (701) is provided on one side of the cover plate (7), and a lock is installed on the other side of the cover plate (7). The cover plate (7) is engaged with the carbon steel beam (102) of the top surface (103) through the cover plate clamp (701) and locked or opened with the carbon steel beam (102) through the lock; the opposite side and bottom surface (104) of the main inspection door (2) are both open.

2. A serviceable external electrical cabinet for a metro vehicle as claimed in claim 1, wherein: The cross-section of the carbon steel vertical beam (101) and the carbon steel horizontal beam (102) on the lock side of the cover plate (7) is a square with an opening at one corner, and the opening side has a wing plate (107).

3. A serviceable external electrical cabinet for a metro vehicle as claimed in claim 1, wherein: The main inspection door (2) and the secondary inspection door (5) are both hinged to the cuboid frame (1) via concealed hinges (3).

4. A serviceable external electrical cabinet for a subway vehicle as defined in claim 1, wherein: All locks are four-corner locks (4).

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