The invention discloses an elevator car door foreign matter detection device, an elevator car door and a car door foreign matter detection method, a first pipeline and a circulation pipeline of the elevator car door foreign matter detection device are communicated to form a closed fluid loop, and a power device enables fluid to flow in the first pipeline at a constant flow speed. The pipe wall of the first pipeline is made of flexible materials, the first pipeline is located in a first groove formed in the first car door and extends in the vertical direction, and a flow meter electrically connected with the control system is arranged at the outlet end of the first pipeline and used for measuring the flow speed. The control system judges whether foreign matter is clamped between the elevator car doors or not according to changes of the flow speed in the first pipeline so as to open the elevator doors in time to prevent accidents. The pipe wall of the first pipeline is made of a flexible material, so that on one hand, the sensitivity of detecting small foreign matters is improved, that is, small articles are clamped between the car doors to cause deformation of the pipe wall, and the flow velocity of fluid at the outlet end is influenced; and on the other hand, foreign matter clamped between the car doors is protected, and the situation that passengers are injured after the foreign matter is clamped and broken is prevented.
本发明公开了一种电梯轿门异物检测装置、电梯轿门及轿门异物检测方法,其中,电梯轿门异物检测装置的第一管路和循环管路连通构成封闭的流体回路,动力装置使流体在第一管路内以恒定流速流动。第一管路管壁采用柔性材料制成,位于第一轿门开设的第一凹槽内且沿竖直方向延伸,并在出口端设有与控制系统电连接的流速计用于测量流速。控制系统根据第一管路内流速的变化判断电梯轿门间是否夹入异物从而及时打开电梯门防止事故发生。第一管路管壁采用柔性材料,一方面提高对体积较小异物检测的灵敏度,即细小物品夹入轿门间也会引起管壁变形,从而影响出口端流体的流速;另一方面对轿门间夹入的异物起到保护作用,防止异物夹碎后对乘客造成伤害。
Elevator car door foreign matter detection device, elevator car door and car door foreign matter detection method
电梯轿门异物检测装置、电梯轿门及轿门异物检测方法
2022-10-18
Patent
Electronic Resource
Chinese
IPC: | B66B Aufzüge , ELEVATORS |
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