Rail transit platform door isolation device

Abstract

The utility model discloses a rail transit platform door isolation device, including and the mechanical isolation lock of lintel connection, and the isolation support of door leaf connection, mechanical isolation lock includes lock core, lock tongue, lock core front end connection lock tongue, and the keyhole that is equipped with for professional key access is equipped in the back, and lock core and lintel rotation is connected, forms mechanical isolation, and lock core drives lock tongue to rotate, and the clearance between door leaf is reduced, and the isolation support is prevented to cross lock tongue. Through setting lock core structure, prevent misoperation, and lock core drive lock tongue movement, prevent sliding door to slide, and sliding door can not open, on the basis of electric isolation, increase a safeguard, guarantee security.

Description

Technical Field

[0001] This utility model relates to a lock for rail transit, and more particularly to a rail transit platform door isolation device. Background Technology

[0002] Sliding doors (platform screen doors) are devices installed on the trackside edge of subway platforms to isolate the platform area from the track area. Electrically isolated sliding doors are widely used in platform screen door systems. When a single sliding door malfunctions, to avoid affecting overall operation, the operator manually activates the electrical isolation function to isolate the malfunctioning door from the system, without affecting the operation of other normal sliding doors. If a sliding door malfunctions and the electrical isolation device is effective, the malfunctioning door will not open after the train arrives at the station, and passengers can enter and exit through other normal sliding doors. However, if the electrical isolation suddenly fails, a sliding door that should not be opened may open, posing a risk of passengers accidentally entering the tracks. If a sliding door malfunctions and is electrically isolated, and passengers escape through the sliding door on the trackside without subsequently closing the malfunctioning door, the malfunctioning sliding door may remain open during normal train operation, also potentially causing passengers to accidentally enter the tracks.

[0003] Existing mechanical isolation devices are generally divided into two parts: a locking tongue fixed to the vehicle body or column, and a corresponding interface set on the door leaf. When isolation is required, external force drives the locking tongue into the interface to achieve door leaf isolation. For example, a positioning isolation device suitable for sliding doors of rail vehicles disclosed in CN216546164U has a relatively simple isolation device structure, but it can be operated by anyone and has poor security. Utility Model Content

[0004] Purpose of the utility model: The purpose of this utility model is to provide a simple and safe rail transit platform door isolation device.

[0005] Technical solution: The present invention provides a rail transit platform door isolation device, comprising a mechanical isolation lock connected to the lintel and an isolation bracket connected to the door leaf. The mechanical isolation lock includes a lock cylinder and a lock tongue. The front end of the lock cylinder is connected to the lock tongue, and the rear end is provided with a keyhole for a professional key. The lock cylinder and the lintel are rotatably connected. When mechanical isolation is formed, rotating the lock cylinder drives the lock tongue to rotate, reducing the gap between the lock cylinder and the door leaf and preventing the isolation bracket from passing over the lock tongue.

[0006] Preferably, the latch is connected to the lock cylinder via a latch mounting shaft, and the surface of the latch is perpendicular to the axis of the latch mounting shaft.

[0007] Preferably, the latch is fan-shaped.

[0008] Preferably, the bolt mounting shaft and the lock cylinder are coaxially arranged.

[0009] Preferably, the lock cylinder and the lock tongue are rotatably connected through a base and a lintel, and the outer surface of the base is provided with an indicator mark that reflects the position of the lock tongue.

[0010] Preferably, the mechanical isolation lock includes a stop bracket, which is connected to the lintel or base. When isolation is formed, the stop bracket abuts against the back side of the lock tongue away from the isolation bracket.

[0011] Preferably, the mechanical locking mechanism includes a magnet connected to the lintel or base, which attracts the bolt when the locking mechanism is released.

[0012] Preferably, the magnet is connected to the lintel or base via a magnet bracket.

[0013] Beneficial effects: Compared with the prior art, this utility model has the following advantages: 1. Simple structure and safe and reliable; 2. Adding a manual mechanical isolation device to prevent passengers from forcibly opening the door from the track side when the sliding door malfunctions, thereby avoiding the risk of forgetting to close the sliding door after the malfunction is resolved; 3. As another important guarantee for the sudden failure of the electrical isolation function, it greatly improves the safety and reliability of operation; 4. Setting a magnet to engage the locking tongue to prevent false isolation caused by vibration. Attached Figure Description

[0014] Figure 1 A schematic diagram of the assembly state of the platform screen door isolation device and door leaf in a rail transit station.

[0015] Figure 2 A schematic diagram of the structure of a rail transit platform screen door isolation device viewed from below from the outside.

[0016] Figure 3 A top-down view of the internal structure of a rail transit platform screen door isolation device;

[0017] Figure 4 A schematic diagram illustrating the principle of de-isolation and isolation switching of platform screen door isolation devices in rail transit stations;

[0018] Figure 5 A schematic diagram of the structure of the platform screen door isolation device and sliding door after assembly and release from isolation in a rail transit station. Detailed Implementation

[0019] The technical solution of this utility model will be further described below with reference to the accompanying drawings.

[0020] like Figures 1 to 3 The platform screen door isolation device of rail transit station mainly consists of two parts: mechanical isolation lock 1 and isolation bracket 13. The mechanical isolation lock 1 mainly consists of base 7, lock cylinder 8 and lock tongue 10.

[0021] The base 7 and the lintel 4 of the sliding door 2 are fixedly connected. The lock cylinder 8 is located inside the base 7 and is rotatably connected to the base 7. The front end of the lock cylinder 8 is connected to the lock tongue 10, and the rear end is provided with a keyhole for professional keys to be inserted to drive the lock cylinder 8 to rotate, thereby restricting the operation of the isolation device, preventing accidental operation, and ensuring safety.

[0022] The lock cylinder 8 is connected to the lock tongue 10 via a lock tongue mounting shaft. The lock tongue mounting shaft and the lock cylinder 8 are on the same straight line, and the surface of the lock tongue 10 forms a certain angle with the axis of the lock cylinder mounting shaft, preferably perpendicular. Driven by the lock cylinder 8, the lock tongue 10 rotates a certain angle with the lock tongue mounting shaft, causing the gap between the lock tongue 10 and the sliding door 2 to decrease or recover. The isolation bracket 13 is fixed to the sliding door 2 and moves synchronously with the sliding door 2. Figure 4 The right half of the lock cylinder 8 drives the bolt 10 to rotate counterclockwise toward the sliding door 2, reducing the gap between the sliding door 2 and the bolt 10. The isolation bracket 13 cannot pass over the bolt 10, preventing the sliding door 2 from opening and creating a mechanical isolation state. Figure 4 left half Figure 5 The latch 10 rotates towards the lintel 4 (clockwise) and retracts, restoring the gap between the latch 10 and the sliding door 2. The mechanical isolation is released, allowing the sliding door 2 to drive the isolation bracket 13 through the gap and be opened.

[0023] The latch 10 is fan-shaped to reduce its rotation radius and prevent it from interfering with sliding doors or other structures when rotating. The base 7 has indicator marks on its surface to reflect the working status of the latch 10 of the mechanical isolation lock 1.

[0024] The mechanical isolation lock 1 also includes a stop bracket 9, a magnetic bracket 11, and a magnet 12. The stop bracket 9 is fixedly connected to the lintel. When the stop bracket 9 is close to the sliding door 2 and forms a mechanical isolation state, the stop bracket 9 abuts against the back side of the lock tongue 10 away from the isolation bracket 13, increasing the limiting force of the lock tongue and ensuring that the lock tongue 10 cannot be pushed further (counterclockwise) by the isolation bracket 13.

[0025] The magnet bracket 11 is fixedly connected to the lintel 4. The magnet bracket 11 and the stop bracket 9 are arranged in front and behind, close to the side of the lintel 4. The magnet bracket 11 is equipped with a magnet 12. When the isolation state is released, the lock tongue 10 approaches the magnet 12 and is attracted by the magnet 12, preventing the lock tongue 10 from rotating (counterclockwise) under vibration and accidentally mechanically isolating the sliding door 2.

[0026] During normal operation, the mechanical isolation lock 1 is in the disengaged state. It will only be manually switched to the isolated state by professionals when the sliding door malfunctions.

[0027] A mode switch 3 is also provided on the lintel 4. Mode switch 3 is used to activate the electric isolation lock. When the sliding door 2 malfunctions, mode switch 3 is switched to the electric isolation position, and then the lock cylinder 8 of the mechanical isolation lock is switched from the release isolation point 5 on the base 7 to the isolation point 6, thus achieving dual protection of electrical and mechanical isolation. At this time, the sliding door 2 cannot be opened from the track side. The mechanical isolation lock 1 is only operated after the electrical isolation is effective, serving as another layer of protection in the event of electrical isolation failure.

Claims

1. A platform screen door isolation device for rail transit stations, comprising a mechanical isolation lock (1) connected to the lintel and an isolation bracket (13) connected to the door leaf, characterized in that, The mechanical isolation lock (1) includes a lock cylinder (8), a base (7), and a bolt (10). The lock cylinder (8) is located inside the base (7) and is rotatably connected to the base (7). The front end of the lock cylinder (8) is connected to the bolt (10), and the rear end is provided with a keyhole for professional keys. The bolt (10) is fan-shaped. When isolation is formed, rotating the lock cylinder (8) drives the bolt (10) to rotate, reducing the gap between the bolt and the door leaf and preventing the isolation bracket (13) from passing over the bolt (10).

2. The rail transit platform door isolation device according to claim 1, characterized in that, The latch (10) is connected to the lock cylinder (8) via a latch mounting shaft, and the surface of the latch (10) is perpendicular to the axis of the latch mounting shaft.

3. The rail transit platform door isolation device according to claim 2, characterized in that, The bolt mounting shaft and the lock cylinder (8) are coaxial.

4. The rail transit platform door isolation device according to any one of claims 1 to 3, characterized in that, The outer surface of the base (7) is provided with an indicator mark to reflect the position of the latch (10).

5. The rail transit platform door isolation device according to claim 4, characterized in that, The mechanical isolation lock (1) includes a stop bracket (9), which is connected to the lintel or base (7). When isolation is formed, the stop bracket (9) abuts against the bolt (10) away from the back side of the isolation bracket (13).

6. The rail transit platform door isolation device according to claim 4, characterized in that, The mechanical isolation lock (1) includes a magnet (12), which is connected to the lintel or base (7). When the isolation is released, the magnet (12) attracts the lock tongue (10).

7. The rail transit platform door isolation device according to claim 6, characterized in that, The magnet (12) is connected to the lintel or base (7) via the magnet bracket (11).

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