Longitudinal dual-mode elevator door anti-shear protection device

Abstract

The application provides a longitudinal double-mode elevator door anti-shear protection device, including: a base column and a pin column respectively arranged on two car doors and opposite to each other, the side of the base column away from the pin column is provided with a connecting seat, the The two ends of the base column are horizontally provided with ejector rods, and the middle part of the base column is provided with several displacement rods. The ejector rods and displacement rods slide through the base column, and one end is articulated with the pin, and the other end is fixedly connected to the connecting seat; The opposite sides of the two push rods are provided with displacement guide rails, and the displacement sliders of the displacement guide rails are respectively provided with mutually adapted infrared emitters and infrared receivers, and the side of the base column away from the pin column is provided with A telescopic mechanism, the output part of the telescopic mechanism is connected to the connecting seat, and the displacement rod is provided with a pressure sensitive sensor. The present application improves the detection strength of the door machine protection device through two modes of physical contact and optical non-contact in the longitudinal direction of the elevator door, facilitates the elimination of longitudinal detection blind spots, and further improves the detection sensitivity.

Description

technical field [0001] The present application relates to the technical field of elevator control, in particular to a longitudinal dual-mode elevator door anti-shear protection device. Background technique [0002] The statements in this section merely provide background technical information relevant to this application and do not necessarily constitute prior art. [0003] With the development of science and technology, the elevator control technology is constantly updated, and the door machine protection equipment is also constantly updated. Most manufacturers change the original door machine protection equipment from the safety touch panel to a more sensitive and flexible light curtain device, but due to the contradiction between sensitivity and cost and the inherent defects of optical detection, the light curtain always has certain limitations. Blind areas, for relatively slender targets such as dog leashes or relatively thin transparent objects, there is a risk of not ...

AI Technical Summary

Problems solved by technology

Most manufacturers change the original door machine protection equipment from the safety touch panel to a more sensitive and flexible light curtain device, but due to the contradiction between sensitivity and cost and the inherent defects of optical detection, the light curtain always has certain limitations. Blind areas, for relatively slender targets such as dog leashes or relatively thin transparent objects, there is a risk of not being recognized, and once they are not recognized, it is bound to cause shear damage to the target and also cause damage to the elevator itself , and most of the existing light curtain devices are located on the lateral sides of the elevator door, which increases the probability of missed detection of thin objects

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