External emergency unlocking device for rail vehicle door system

Abstract

The invention discloses an external emergency unlocking device for a rail vehicle door system, mainly comprising an operating handle, a transverse electromagnet, a vertical electromagnet, a position switch, a reset spring, a limit block, a connecting rod, and a handle support. The transverse electromagnet is fixed on the back of a housing, and the telescopic rod of the transverse electromagnet cooperates with the limit block. The upper part of the limit block is fixed to one end of the limit block rotating shaft, and the lower part cooperates with the handle support. The handle support is fixed on the operating handle through the rotating shaft. The middle part of the limit block rotating shaft is supported on the housing. The other end of the limit block rotating shaft is connected to the connecting rod. One end of the connecting rod is connected to the bracket through a reset spring, and the other end of the connecting rod is connected to the telescopic rod of the vertical electromagnet through a U-shaped block. A contact plate is fixed under the U-shaped block. When the contact plate falls, it touches and cooperates with the position switch. The vertical electromagnet and the position switch are fixed on the housing. The invention realizes emergency unlocking of the door without using a special key, which is conducive to rescue in an emergency situation, and can prevent arbitrary operation at the same time, ensuring vehicle safety and normal operation of the train, and has good application prospects.

Description

Technical Field

[0001] The invention relates to an unlocking device for emergency rescue of rail vehicles, in particular to an unlocking mechanism for emergency rescue of train doors. Background Art

[0002] Emergency unlocking device, also known as train emergency door opening device, is a device used to manually open the doors of rail vehicles under abnormal circumstances, such as when the doors cannot be opened or when encountering emergencies. The external emergency unlocking device is located on the external body of the vehicle and is mainly used by rescue personnel outside the vehicle.

[0003] In order to prevent the external emergency unlocking device from being operated arbitrarily in non-emergency situations and affecting train safety, the current external emergency unlocking devices all need to be operated with a special key. This will result in the train having to wait for professional personnel to carry out rescue in an emergency, which will delay the rescue to a certain extent and miss the best rescue time. Summary of the invention

[0004] The purpose of the present invention is to provide a novel external emergency unlocking device, which can be operated without using any tools in an emergency situation, thereby ensuring a rapid response to rescue, while preventing arbitrary operation in non-emergency situations that would affect operations.

[0005] To achieve the above-mentioned purpose of the invention, the present invention provides an external emergency unlocking device for a rail vehicle door system, which is characterized in that it mainly includes an operating handle, a transverse electromagnet, a vertical electromagnet, a position switch, a reset spring, a limit block, a connecting rod, and a handle support. The transverse electromagnet is fixed to the back of a shell, and the telescopic rod of the transverse electromagnet cooperates with the limit block. The upper part of the limit block is fixed to one end of the limit block rotating shaft, and the lower part cooperates with the handle support. The handle support is fixed to the operating handle through the rotating shaft. The middle part of the limit block rotating shaft is supported on the shell, and the other end of the limit block rotating shaft is connected to the connecting rod. One end of the connecting rod is connected to the bracket through a reset spring, and the other end of the connecting rod is connected to the telescopic rod of the vertical electromagnet through a U-shaped block. A contact plate is fixed under the U-shaped block. When the contact plate falls, it touches and cooperates with the position switch. The vertical electromagnet and the position switch are fixed on the shell.

[0006] A limit stopper is also fixed on the rotating shaft to prevent the operating handle from being opened too far, thereby preventing the steel wire rope connecting the operating handle and the door from being broken.

[0007] A stopper is arranged on the limit block to prevent the limit block from rotating too much clockwise and hitting the handle support under the action of the vertical electromagnet.

[0008] The position limiting block and the handle support are limited by the cooperation of the V-shaped protrusion under the limit block and the V-shaped groove of the fan-shaped handle support.

[0009] The present invention achieves that when the train is in a stationary state, the external emergency unlocking device receives a "stationary" signal, the electromagnet is activated, the operating handle is blocked by the limit block, the external emergency unlocking device is locked, and the train cannot be operated in both the powered and de-powered states through the ingenious cooperation of two electromagnets. When the train is in a non-stationary state, the external emergency unlocking device does not receive a stationary signal, the electromagnet is deactivated, the operating handle is released, and the external emergency unlocking device can be operated in both the powered and de-powered states. Emergency unlocking of the door can be achieved without using a special key, which is conducive to rescue in emergency situations, while preventing arbitrary operation, ensuring vehicle safety and normal operation of the train, and has good application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the front structure of the external emergency unlocking device;

[0011] Figure 2 This is a schematic diagram of the back structure of the external emergency unlocking device;

[0012] Figure 3 This is a schematic diagram of the locked state of the external emergency unlocking device;

[0013] Figure 4 For along Figure 3 Sectional view along line AA;

[0014] Figure 5 This is a schematic diagram of the operational state of the external emergency unlocking device;

[0015] Figure 6 is along Figure 5 Cross-sectional view along line BB. DETAILED DESCRIPTION

[0016] Reference Figure 1 , Figure 2The specific implementation of the utility model includes a shell 1, a vertical electromagnet 2, an operating handle 3, a reset spring 4, a position switch 5, a limit block 6, a transverse electromagnet 7, a connecting rod 8, a handle support 9, a rotating shaft 10, a bracket 11, a limit block rotating shaft 12, a limit block 13, a U-shaped block 14, a contact plate 15, a special-shaped connecting plate 16, and a telescopic rod 17 of the transverse electromagnet 7. The transverse electromagnet 7 is fixed to the back of the shell 1, and the telescopic rod 17 of the transverse electromagnet 7 passes through the limit block 6 to limit the position. The telescopic rod 17 of the transverse electromagnet 7 is retracted to release the limit. The upper part of the limit block 6 is fixed to one end of the limit block shaft 12, the middle part of the limit block shaft 12 is supported on the shell, the other end of the limit block shaft is connected to one end of the connecting rod 8, the other end of the connecting rod 8 is connected to the telescopic rod of the vertical electromagnet 2 through the U-shaped block 14, the upper part of the connecting rod 8 connected to one end of the U-shaped block 14 is connected to the bracket 11 through the reset spring 4, and a downwardly flanged contact plate 15 is fixed under the U-shaped block 14. When the contact plate falls, its flange touches and cooperates with the position switch 5, and the unlocking device status signal is transmitted to the staff through the touch switch. The special-shaped connecting plate 16 is fixed on the shell and the bracket, and the vertical electromagnet and the position switch are fixed on the special-shaped connecting plate 16. The V-shaped protrusion under the limit block 6 cooperates with the V-shaped groove of the fan-shaped handle support 9 to limit the fan-shaped handle support. When the telescopic rod 17 of the transverse electromagnet is retracted, the limit block 6 is not limited. When it rotates counterclockwise to a certain position, the telescopic rod 17 of the transverse electromagnet extends again to limit the limit block 6. At this time, the limit block 6 also plays a limiting role on the handle support, and the handle support cannot rotate clockwise. The handle support passes through the rotating shaft 10 and is fixed on the operating handle 3. A limit block 13 is also fixed on the rotating shaft. The limit block 13 is limited by the transverse electromagnet, thereby limiting the handle support to prevent the operating handle from opening too wide and causing the wire rope connecting the operating handle and the door to be broken.

[0017] Reference Figure 3 , Figure 4 , when the vehicle is stationary, the door system will receive a "stationary" signal and the external emergency unlocking device will be blocked from any operation, even if the vehicle loses power, as follows:

[0018] When the door system receives the "stationary" signal, the vertical electromagnet 2 is activated, and the vertical electromagnet 2 drives the connecting rod 8 to move clockwise around the limit block shaft. The U-shaped block 14 connected to the connecting rod 8 moves downward, the reset spring 4 is stretched, and the contact plate 15 connected to the lower side of the U-shaped block is flipped to trigger the position switch 5. At the same time, the limit block 6 is driven to rotate clockwise through the limit block shaft 12. The limit block 6 will be stuck in the blocking position of the handle support 9, and the handle 7 is locked and cannot be unlocked. While the limit block 6 rotates, the telescopic rod 17 of the horizontal electromagnet 7 extends out and returns to the initial position, and the limit block 6 is restricted. Since the limit block 6 is restricted, even if the vehicle is powered off, the vertical electromagnet 2 cannot return to the initial position, and the handle is still blocked, and cannot be unlocked.

[0019] Reference Figure 5 , Figure 6 When the vehicle exits the stationary state and the door system does not receive the "stationary" signal, the external emergency unlocking device will resume the operable state, even if the vehicle is powered off. The specific process is as follows:

[0020] The "stationary" signal is cancelled, the transverse electromagnet 7 is activated, the electromagnet telescopic rod leaves the blocking position of the limit block 6, the return spring 4 makes the limit block 6 leave the blocking position of the handle support 9 through the connecting rod 8, the operating handle 3 can be operated, and the unlocking device enters the normal mode; even if the vehicle is powered off, the unlocking can still be operated.

Claims

1. An external emergency unlocking device for a rail vehicle door system, characterized in that: It mainly includes an operating handle, a transverse electromagnet, a vertical electromagnet, a position switch, a reset spring, a limit block, a connecting rod, and a handle support. The transverse electromagnet is fixed on the back of the shell, and the telescopic rod of the transverse electromagnet cooperates with the limit block. The upper part of the limit block is fixed to one end of the limit block shaft and cooperates with the handle support at the bottom. The handle support is fixed on the operating handle through the rotating shaft. The middle part of the limit block shaft is supported on the shell, and the other end of the limit block shaft is connected to the connecting rod. One end of the connecting rod is connected to the bracket through a reset spring, and the other end of the connecting rod is connected to the telescopic rod of the vertical electromagnet through a U-shaped block. A contact plate is fixed under the U-shaped block. When the contact plate falls, it touches and cooperates with the position switch. The vertical electromagnet and the position switch are fixed on the shell.

2. The external emergency unlocking device of a rail vehicle door system according to claim 1, characterized in that: A limit stopper is also fixed on the rotating shaft to prevent the operating handle from being opened too far, thereby preventing the steel wire rope connecting the operating handle and the door from being broken.

3. The external emergency unlocking device of a rail vehicle door system according to claim 1, characterized in that: A stopper is arranged on the limit block to prevent the limit block from rotating too much clockwise and hitting the handle support under the action of the vertical electromagnet.

4. The external emergency unlocking device of a rail vehicle door system according to claim 1, characterized in that: The position limiting block and the handle support are limited by the cooperation of the V-shaped protrusion under the limit block and the V-shaped groove of the fan-shaped handle support.

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