Elevator parachute safety deceleration device

Abstract

A parachute type safety deceleration device for an elevator, the elevator includes a car body, the parachute type safety deceleration device includes a parachute box; the box door opening mechanism is arranged in the parachute box cavity and is hinged with the box door; On the wall of the side of the parachute box cavity facing the mouth of the cavity, the other end is supported on the opening mechanism of the box door; the locking rod control mechanism is fixed on the cavity wall of the side of the parachute box cavity facing the mouth of the cavity; the parachute is located on Between the box door opening mechanism and the box door; the speed measuring mechanism, including a speed measuring wheel bracket, a speed measuring wheel, a tension spring and a set of centrifugal hammers, the upper end of the speed measuring wheel bracket is hinged with the front right end of the car body bracket, and the speed measuring wheel At the lower end of the wheel bracket, one end of the extension spring is hung on the car body bracket, the other end is hung on the middle part of the speed measuring wheel bracket, and a group of centrifugal hammers are distributed at intervals around the circumferential direction of the speed measuring wheel. Avoid causing damage to the occupants; guarantee the speed of the parachute and automatically release it; reduce the intensity of management work.

Description

technical field [0001] The invention belongs to the technical field of elevator safety facilities, and in particular relates to a parachute-type safety deceleration device for elevators. Background technique [0002] The elevator mentioned above mainly refers to the inclined elevator. The technical information of setting up the parachute type safety deceleration device on the elevator vertically running up and down can be found in the published Chinese patent documents, such as "a kind of elevator with a parachute" recommended by the invention patent publication number CN105752803A and the invention patent publication number CN105621207A provides "a special elevator car for a security type community". The technical scheme of the former in these two patents is: be provided with parachute box on the car top, be provided with parachute in the parachute box, the width of hoistway is greater than the diameter of parachute, the bottom of parachute is fixed on the car outer top wa...

AI Technical Summary

Problems solved by technology

[0003] However, looking at the full text of the aforementioned CN105752803A description, the specific structure of the parachute safety deceleration device has not been seen, such as how to open the parachute in time when the elevator fails, and how to reliably control the parachute in the parachute box in the standby state (the patent claims In the parachute box), how the elevator controller sends a signal to the safety deceleration device at the moment the elevator falls, how to ensure that the parachute can quickly escape from the parachute box, etc.

In addition, CN105752803A seems to be inadvisable to set the switch for opening the parachute box in the car, because once the occupant unintentionally touches it, abnormal activation will occur, which will not only cause false alarm to the occupants, but also bring trouble to the elevator management

In addition, when the car falls out of control when the danger occurs, at least the following disadvantages exist in the manual operation of the switch: because the car falls usually without warning in an instant, it may have fallen before the occupant reacts. And because even if the occupant responds, there is a time difference between manually touching the switch, so it cannot be effective in the first time, and because the occupant is often in a state of high tension and panic during the elevator's descent, and will not immediately press the button. The action of moving the switch

[0004] In addition, since the aforementioned CN105752803A and CN105621207A are all aimed at vertically ascending and descending elevators, they are not instructive for oblique elevators, and CN1056210207A also has the aforementioned shortcomings of CN105728203A

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