Emergency-door and end-door push rod lock for rail transit platform

Abstract

The invention provides an emergency-door and end-door push rod lock for a rail transit platform and relates to the technical field of hardware. The emergency-door and end-door push rod lock comprises an unlocking unit, a central locking unit and a lock bolt unit. The lock bolt unit is connected with the central locking unit through a first connection rod. The first connection rod is provided with a large-scale-length-adjusting locking and fastening connection piece. The central locking unit is connected with the unlocking unit through a second connection rod. The second connection rod is provided with a length-fine-adjusting locking and fastening connection piece. The emergency-door and end-door push rod lock is simple in structure, convenient to operate, standard, and universal, the long-hole-distance machining error of the lock is overcome, the stability and the reliability of the lock are improved greatly, and the reaction speed of the lock is increased greatly; the three modules are all of the rigid frame sealed packaging structures, the strength of the lock is enhanced, the internal structure of the lock is prevented from being damaged by external impact, the problem that the stroke of a lock is insufficient or excessive due to the cumulative error of an integrated lock frame is solved, the structure is modular, occupied space is reduced, a door body does not need to be detached, and great convenience is provided for later maintenance.

Description

Technical field: [0001] The invention relates to the technical field of hardware, in particular to an emergency door of a rail transit platform and a push rod lock of an end door. Background technique: [0002] Rail transit platform screen doors and security doors were introduced relatively late in China, but the development speed is very fast. There is still no unified standard in China, especially the door locks are used by some of their own non-standard parts, and there are many safety issues. and hidden dangers in use and maintenance. The push rod lock is a very important escape tool in the operation of rail transit, and plays a pivotal role in safety assurance. There are mainly several types of non-standard push rod locks currently in use: A. Substitution of building fire locks; B. Modification by borrowing the principle of opening and closing the door frame of the fire lock; C. One with secondary protection with certain technical content Lock frame structure lock. P...

AI Technical Summary

Problems solved by technology

Problems with the above locks: A. The fire lock substitute lock is not strong enough; the opening and closing lock response speed is slow; B. The touch-type lock lock response speed is slow; heavy closing rebound cannot be effectively locked; C. Secondary protection The one-piece lock frame structure lock has a short service life and cannot withstand the frequent door opening and closing requirements of high-frequency end doors; D. They still have some common problems, that is, the lock frames are all one-piece locks with a length of about 2 meters, and the processing error of the lock and the door frame The processing error directly affects the use effect of the lock, resulting in the lock being often stuck and the door cannot be opened and closed; E, screen doors and safety doors are heavy-duty doors of steel structure, which require extremely high response speed of the lock when closing the door. The lock is often bounced back by the frame and cannot be locked, that is, their locking time is too long; F, the power transmission structure for unlocking from the platform side and unlocking from the track side is not separated, and the internal structure is too complicated or simple, resulting in the unlocking force Too large; G. The stroke of the lock has no effective protection, which often leads to insufficient or excessive stroke of the lock. If the stroke is not enough, it will not be able to lock effectively. If the stroke is too large, the floor will be closed when the door is opened and the door cannot be opened; H, there is no multi-level unlocking Protection, when I lose the unlocking force in the middle, I will cause the door bolt to hang on the floor and cannot open the door; I, the integrated door lock structure, the maintenance cannot be completed quickly in the later stage, and the door needs to be disassembled before it can be completed; J, the lock has no self-protection , can not withstand the impact of external force

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