Anti-pinch device for flexible objects in urban rail doors

Abstract

The invention provides a flexible object anti-pinch device for an urban rail vehicle door. A barrier detecting rod is mounted on the outer side of a right door hinge and is fixed on a moving component of a rodless cylinder, and the rodless cylinder is mounted in a groove of the door hinge; a barrier-free detecting microswitch S1 is mounted below a left door hinge, the inner side of the left door hinge is similar to the outer side of the right door hinge, a barrier detecting rod is also mounted on the inner side of the left door hinge, a barrier-free detecting microswitch S2 is mounted above the right door hinge, and normally open contacts of the barrier-free detecting microswitch S1 and the barrier-free detecting microswitch S2 are serially connected to each other, are in parallel connection with a normally open contact of a fault clearing switch SA, and then are serially connected with a safe interlocking loop of an urban rail vehicle to form a new safe interlocking loop; and normally closed contacts of the barrier-free detecting microswitch S1 and the barrier-free detecting microswitch S2 are in parallel connection with each other, are serially connected with a normally closed contact of the fault clearing switch SA, and then are serially connected with a barrier alarming signal lamp L. When a barrier exists, the barrier-free detecting microswitch S1 and the barrier-free detecting microswitch S2 do not act, then the safe interlocking loop of the urban rail vehicle cannot be switched on, and at this time, the urban rail vehicle cannot be started normally.

Description

Technical field [0001] The invention relates to an urban rail vehicle door flexible object anti-clamping device which can prevent flexible objects and small objects from being clamped by the door of urban rail vehicles. Background technique [0002] Urban rail transit is now rapidly developing, making it easier for people to travel in more and more cities. As a passage for passengers in the vehicle, the door is related to the normal operation of the vehicle and the safety of the passengers, and is a very important part of the vehicle. The existing door anti-pinch device mainly uses the motor current detection mode and the door leaf stroke detection mode to determine whether there are foreign objects in the door and prevent people from being caught in the door. However, the existing door basically cannot detect objects with a diameter of less than 20mm, especially It is impossible to detect belt-like objects and flexible objects, resulting in many accidents and even injuries to p...

AI Technical Summary

Problems solved by technology

The existing door anti-trap device mainly uses the motor current detection mode and the travel detection mode of the door leaf to judge whether there is a foreign object in the door and prevent the door from being trapped. Belt-like objects and flexible objects cannot be detected, resulting in many accidents and even injuries to passengers

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