An elevator floor door anti-detachment device

An anti-detachment device and landing door technology, which is applied to elevators, transportation and packaging in buildings, can solve the problems of door panels falling off, casualties, and elevator landing doors falling off, so as to prevent falling off, ensure safety and improve stability Effect
CN107792762BInactive Publication Date: 2019-09-24NANTONG CHENGSHAN CONSTR ENG
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NANTONG CHENGSHAN CONSTR ENG
Publication Date
2019-09-24
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an elevator landing door anti-detachment device which structurally comprises a landing door frame, an anti-detachment device, a cross beam connection rod, landing doors, a cardoor sill, a clamping groove and a pulley plate. In order to achieve the purpose that the upper end of the elevator landing door anti-detachment device can be powered to prevent a landing door from being detached, the anti-detachment device is arranged at the top end of the landing door frame, the landing doors can be combined in parallel and separated through the anti-detachment device, a motor drives a driving gear to enable an anti-detachment gear plate to drive a movable frame to work in a set range, the right landing door can be prevented from being detached when moved, a limiting rack onthe movable frame is matched with a driven gear to drive a sliding rack to move in the opposite direction, the left landing door can be matched with the right landing door to be opened and closed inparallel, and the limiting rack can limit the rotation range of the driven gear through a clamping strip. The design is in line with the principle, operation stability of an upper end power device isimproved, an elevator door plate is prevented from being detached when impacted, and elevator safety is ensured.
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Description

technical field

[0001] The invention is an elevator floor door anti-dropping device, which belongs to the field of elevators. Background technique

[0002] Landing doors are generally composed of doors, rail frames, pulleys, sliders, door frames, sills and other components. The landing door shall be a door without holes, and the net height shall not be less than 2m. After the landing door is closed, the gap between the door leaves and between the door leaf and the column, lintel and sill should be as small as possible. The passenger elevator should be 1-6mm, and the cargo elevator should be 1-8mm.

[0003] At present, the industry generally adopts the anti-falling of landing door device and the door system with anti-falling groove to realize the anti-falling function, so as to prevent passengers from accidentally falling into the hoistway. Groove structure, the interlocking structure of the door panel and the door casing in the front and rear directions, etc. However, when...

Claims

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