Brake-releasing device for elevator hoist and method of operating the same
A technology of mechanical brakes and release devices, applied in elevators, transportation and packaging, etc., can solve problems such as increased storage space, large-scale structure, difficult rescue operation, etc., to achieve smooth movement, improved reliability, improved safety and operational effect
Active Publication Date: 2008-08-06
TOSHIBA ELEVATOR KK
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Problems solved by technology
[0012] But the problem is that in order to obtain the necessary force and stroke on the traction at a small angle, it is effective to increase the distance between the position of the traction inner cable and the center of rotation of the rod, but the overall length of the rod must be lengthened
As a result, the brake release device must be enlarged to increase the storage space, which is not ideal for design.
[0013] In addition, in order to disengage the brake with a short stroke, the effective method is to configure the structure of the four sides of the brake, but in order to increase the traction force, a thick steel cable is required, which will increase the size of the structure.
In addition, once the stroke is shortened and the traction force is increased, it becomes difficult to finely adjust the traction force, and stable rescue operation becomes difficult.
Method used
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[0031] Hereinafter, embodiments of the elevator hoist brake release device according to the present invention will be described with reference to the accompanying drawings.
[0032] First, refer to Image 6 , to describe the ordinary elevator. Image 6 It is a schematic diagram showing an example of an elevator.
[0033] The elevator 100 includes a car 104 vertically movably arranged in a building hoistway 101 and an elevator hoist (also referred to as a "hoist") 102 arranged above the hoistway 101 . One side of the steel cable 103 hanging down from the winch 102 is wound on the driven pulley 105 provided on the lower side of the car 104 , and the end of the steel cable 103 is supported near the upper end of the hoistway 101 .
[0034] In addition, the other side of the steel cable 103 hanging from the winch 102 is wound on the pulley 107 assembled on the top of the counterweight 106 , and the end of the steel cable 103 is supported near the upper end of the hoistway 101 . ...
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A brake-releasing device has an outer tube (11) and an inner wire (12) that are extended between a brake (102a) for a hoist (102) and a holder box (20) that is installed in the vicinity of a landing area (108). An operation lever (40) connected to the inner wire (12) is swingably provided at a frame (30) in the holder box (20). The outer tube (11) is connected to the frame (30) by an outer tube-fixing shaft (35). The inner wire (12) is connected at its fore-end portion (12a) to the operation lever (40) by an inner wire-connecting shaft (46).
Description
technical field [0001] The present invention relates to an elevator hoist brake release device for disengaging the hoist brake when the elevator hoist cannot be driven. Background technique [0002] When the elevator hoist (hereinafter referred to as the hoist) cannot be operated due to earthquakes, power outages or elevator failures during elevator operation, the car often stops between floors. In this case, manually disengage the brake of the winch, so that the car can be lifted to the seating place for rescue work. [0003] There are various proposals as a device for manually opening the brake of the hoisting machine. For example, the known operating mechanism for rescue operation is to pull the end of the brake cable to the ground of the seat and then press the foot lever temporarily arranged on the floor of the seat to index the brake cable to open the rescue operation. Brake (see Patent Document 1: JP-A-2001-233563). [0004] In addition, a well-known (manual) devic...
Claims
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IPC IPC(8): B66B5/02
CPCB66B5/027B66B1/32B66B5/02
Inventor 村上伸石井隆史浦田尚纪
Owner TOSHIBA ELEVATOR KK