Brake disc releasing device, turning device, elevator rescue kit and method

Patent metadata

Field	Value
Publication number	US-11667495-B2
Application number	US-201916401605-A
Country	US
Kind code	B2
Filing date	May 2, 2019
Priority date	May 3, 2018
Publication date	Jun 6, 2023
Grant date	Jun 6, 2023

Abstract

A brake disc release device, a turning device, and an elevator rescue package and method. The brake disc release device comprises: an actuating mechanism; a gear connected to a first end of the actuating mechanism; a first slider capable of sliding along a first guide piece and comprising a rack portion for engagement with the gear and a first wedge portion; a second slider capable of sliding along a second guide piece and comprising a second wedge portion for engagement with the first wedge portion of the first slider; and a pulling cable having a first end connected to the second slider and a second end connected to the brake disc.

First claim

What is claimed is:

1. A brake disc release device for elevators equipped with a brake disc, the brake disc release device comprising:
an actuating mechanism having a first end and a second end;
a gear connected to the first end of the actuating mechanism;
a first slider capable of sliding along a first guide piece and comprising a rack portion for engagement with the gear and a first wedge portion;
a second slider capable of sliding along a second guide piece and comprising a second wedge portion for engagement with the first wedge portion of the first slider; and
a pulling cable having a first end connected to the second slider and a second end connected to the brake disc;
wherein the actuating mechanism is rotated to drive the gear to rotate, drive the first slider to move in a first direction by means of the engagement between the gear and the rack portion of the first slider, drive the second slider to move in a second direction by means of the engagement between the first wedge portion of the first slider and the second wedge portion of the second slider, and thus drive the pulling cable to pull the brake disc;
wherein the first direction is different than the second direction.

2. The brake disc release device according to claim 1 , characterized in that the first direction is perpendicular to the second direction.

3. The brake disc release device according to claim 1 , characterized in that the brake disc release device further comprises a housing, wherein the gear, the first slider, and the second slider are arranged inside the housing, and the actuating mechanism and the pulling cable are partially arranged inside the housing.

4. The brake disc release device according to claim 3 , characterized in that the housing is formed by connecting a lower housing and an upper housing.

5. The brake disc release device according to claim 4 , characterized in that the brake disc release device further comprises a pedal connected to the lower housing.

6. The brake disc release device according to claim 3 , characterized in that the actuating mechanism comprises a pair of actuating levers on two sides of the housing, first ends of the pair of actuating levers are connected to the gear via a shaft, and second ends of the pair of actuating levers are connected with each other to form a handle.

7. The brake disc release device according to claim 3 , characterized in that the first guide piece is a first guide post laterally arranged in the housing, and the first guide post runs through the rack portion and the first wedge portion of the first slider.

8. The brake disc release device according to claim 7 , characterized in that, when the brake disc release device is placed on the ground, the first guide post is oriented horizontally.

9. The brake disc release device according to claim 3 , characterized in that the second guide piece is a plurality of second guide posts vertically arranged in the housing, and the plurality of second guide posts run through the second slider at the circumference.

10. The brake disc release device according to claim 9 , characterized in that, when the brake disc release device is placed on the ground, the plurality of second guide posts are oriented vertically.

11. The brake disc release device according to claim 1 , characterized in that the brake disc release device comprises a plurality of pulling cables with second ends thereof being evenly distributed and connected to circumferential positions of the brake disc.

12. The brake disc release device according to claim 1 , characterized in that the brake disc release device has a capability of magnifying a force by more than 40 times.

13. The brake disc release device according to claim 1 , characterized in that a first end of the pulling cable is connected to the second slider via a bolt, and a second ends of the pulling cable is connected to the brake disc via a bolt.

14. An elevator rescue package, comprising:
the brake disc release device according to claim 1 .

Assignees

• Otis Elevator Co

Inventors

• Zhu Fengkun
• Wu Hongliang
• Hubbard James L

Classifications

• F16D65/092 Primary

  for axially-engaging brakes, e.g. disc brakes · CPC title

• F16D2127/02

  Release mechanisms · CPC title

• F16D65/18

  adapted for drawing members together {, e.g. for disc brakes} · CPC title

• F16D2121/14

  Mechanical · CPC title

• B66B5/027 Primary

  to permit passengers to leave an elevator car in case of failure, e.g. moving the car to a reference floor or unlocking the door · CPC title