CN-224226424-U - Elevator car door opening anti-falling device

CN224226424UCN 224226424 UCN224226424 UCN 224226424UCN-224226424-U

Abstract

The utility model discloses an elevator car door opening anti-falling device, which belongs to the technical field of elevator anti-falling, wherein when a car reaches a flat layer position, a driving mechanism drives a car door to open, and the car door drives a driving part to synchronously move, the driving part drives a first driven part to outwards extend out of the car by utilizing transmission of a transmission mechanism, and as the opening distance of the car door is increased, the first driven part is gradually inserted into an anti-falling hole of an anti-falling part corresponding to the flat layer position on a guide rail frame, so that the first driven part is matched with the anti-falling hole of the anti-falling part to prevent the car from falling or rushing to the top when the car door is opened.

Inventors

WANG KUN
YANG HONG
HE JIANLIN
YUAN HONGLING
ZHANG JIANLONG
ZHANG WENJIE
BAI ZHIPENG

Assignees

广东环境保护工程职业学院

Dates

Publication Date: 20260512
Application Date: 20250428

Claims (10)

1. An elevator car door opening anti-drop device, comprising: The elevator car is provided with an elevator car door and guide shoes; the driving mechanism is arranged on the car and connected with the car door, and the driving mechanism drives the car door to move along the horizontal direction; The guide rail frame is vertically arranged, a guide rail which is vertically arranged is arranged on the guide rail frame, the guide rail and the guide shoe are vertically matched in a sliding or rolling mode, the guide rail frame is also provided with a plurality of anti-falling pieces which are vertically distributed at intervals, and each anti-falling piece is provided with an anti-falling hole; The driving piece is connected with the car door and moves synchronously with the car door; A first follower horizontally slidably coupled to the car; the driving part drives the first driven part to be inserted into the anti-falling hole of the corresponding floor or separated from the anti-falling hole of the corresponding floor through the transmission mechanism.
2. The elevator car door opening anti-drop device of claim 1, wherein there are two guide shoes, there are two guide rail brackets, two guide rail brackets are distributed on two sides of the elevator car, the two guide shoes are respectively in sliding fit or rolling fit with the two guide rails, the elevator car door opening anti-drop device further comprises: The second driven piece is connected with the car in a horizontal sliding mode, the second driven piece is connected with the transmission mechanism, and the driving piece drives the first driven piece and the second driven piece to be inserted into the two anti-falling holes of the corresponding floor or separated from the two anti-falling holes respectively through the transmission mechanism.
3. The elevator car door opening fall protection device of claim 2, wherein the driving member, the transmission mechanism, the first driven member, and the second driven member are driven in rack and pinion engagement.
4. The elevator car door opening fall protection device of claim 3, wherein the driving member is provided with a driving rack, the first driven member is provided with a first driven rack, the second driven member is provided with a second driven rack, and the transmission mechanism comprises: the first driving gear is arranged on the lift car and meshed with the driving rack; The second driving gear is arranged on the car and meshed with the first driving gear; the first driven gear is arranged on the car, and the first driven rack and the second driving gear are respectively meshed with the first driven gear; And the second driven gear is coaxially connected with the first driven gear and is meshed with the second driven rack.
5. The elevator car door opening fall protection device of claim 4, wherein the first follower and the second follower move in opposite directions.
6. The elevator car door opening anti-drop device of claim 4, wherein the outer diameters of the first drive gear, the second drive gear, the first driven gear, and the second driven gear are the same.
7. The elevator car door opening fall prevention device according to claim 2, wherein a width of the first follower in a vertical direction and a width of the second follower in the vertical direction are smaller than a width of the fall prevention hole in the vertical direction.
8. The elevator car door-opening fall protection device of claim 2, wherein the drive mechanism, the first follower, the second follower, and the transmission mechanism are all disposed at a top of the car, and the driving member is connected to a top of the car door.
9. The elevator car door opening fall protection device of claim 1, wherein the distance of the fall protection member from the first follower in the horizontal direction is no greater than half of the travel of the car door when open.
10. The elevator car door opening fall protection device of claim 9, wherein the fall protection member is not more than 20cm horizontally from the first follower.

Description

Elevator car door opening anti-falling device Technical Field The utility model relates to the technical field of elevator falling prevention, in particular to an elevator car door opening falling prevention device. Background Elevator operation safety has been a central concern for people purchasing and riding an elevator. Elevator safety accidents are often of particular concern as a type of public transportation. At present, an elevator car is opened to walk a ladder or falls to be a serious safety accident, and a falling prevention device in the prior art is used for preventing the elevator from falling or rushing to the top, however, if the elevator car door of the elevator is in an open state and the elevator falls or rushes to the top, serious injury can be caused to personnel entering and exiting the elevator in the process of emergency braking of the falling prevention device on the elevator. Disclosure of utility model The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the elevator car door opening anti-falling device, along with the increase of the opening distance of the car door, the first driven piece is gradually inserted into the anti-falling hole of the anti-falling piece corresponding to the flat layer position on the guide rail frame, so that the first driven piece is matched with the anti-falling hole of the anti-falling piece, and the car is prevented from falling or rushing to the top when the car door is opened. According to the embodiment of the utility model, the elevator car door opening anti-falling device comprises: The elevator car is provided with an elevator car door and guide shoes; the driving mechanism is arranged on the car and connected with the car door, and the driving mechanism drives the car door to move along the horizontal direction; The guide rail frame is vertically arranged, a guide rail which is vertically arranged is arranged on the guide rail frame, the guide rail and the guide shoe are vertically matched in a sliding or rolling mode, the guide rail frame is also provided with a plurality of anti-falling pieces which are vertically distributed at intervals, and each anti-falling piece is provided with an anti-falling hole; The driving piece is connected with the car door and moves synchronously with the car door; A first follower horizontally slidably coupled to the car; the driving part drives the first driven part to be inserted into the anti-falling hole of the corresponding floor or separated from the anti-falling hole of the corresponding floor through the transmission mechanism. The elevator car door opening anti-falling device has the advantages that when the elevator car reaches the flat layer position, the driving mechanism drives the elevator car door to open, the elevator car door drives the driving piece to move synchronously, the driving piece utilizes transmission of the transmission mechanism to enable the first driven piece to extend outwards out of the elevator car, along with the increase of the opening distance of the elevator car door, the first driven piece is gradually inserted into the anti-falling hole of the anti-falling piece corresponding to the flat layer position on the guide rail frame, and then the first driven piece is matched with the anti-falling hole of the anti-falling piece, so that the elevator car is prevented from falling or rushing to the top when the elevator car door is opened. According to some embodiments of the present utility model, there are two guide shoes, two guide rail frames are distributed on two sides of the car, the two guide shoes are respectively in sliding fit or rolling fit with the two guide rails, and the elevator car door opening anti-falling device further includes: The second driven piece is connected with the car in a horizontal sliding mode, the second driven piece is connected with the transmission mechanism, and the driving piece drives the first driven piece and the second driven piece to be inserted into the two anti-falling holes of the corresponding floor or separated from the two anti-falling holes respectively through the transmission mechanism. According to some embodiments of the utility model, the driving member, the transmission mechanism, the first driven member and the second driven member are driven by rack and pinion engagement. According to some embodiments of the utility model, the driving member is provided with a driving rack, the first driven member is provided with a first driven rack, the second driven member is provided with a second driven rack, the transmission mechanism comprises: the first driving gear is arranged on the lift car and meshed with the driving rack; The second driving gear is arranged on the car and meshed with the first driving gear; the first driven gear is arranged on the car, and the first driven rack and the second driving gear are respectively meshed with