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Emergency brake device of elevator

An emergency braking, elevator technology, applied in the direction of hoisting device, transportation and packaging, elevator, etc., can solve the problem of time-consuming, increase in car speed, etc.

Inactive Publication Date: 2008-12-31
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the above-mentioned conventional emergency braking device, it takes time from moving the brake bolt according to the abnormality detection signal until the drive sheave stops, thus causing a corresponding increase in the speed of the car.

Method used

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  • Emergency brake device of elevator
  • Emergency brake device of elevator
  • Emergency brake device of elevator

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Embodiment Construction

[0012] Next, preferred embodiments of the present invention will be described with reference to the drawings.

[0013] figure 1 It is a schematic configuration diagram of an elevator apparatus showing an example of an embodiment of the present invention. In the drawing, a pair of car guide rails 2 and a pair of counterweight guide rails 3 are provided in a hoistway 1 . The car 4 is guided by the car guide rail 2 and moves up and down in the hoistway 1 . The counterweight 5 is guided by the counterweight guide rail 3 and moves up and down in the hoistway 1 .

[0014] A machine room 6 is provided on the top of the hoistway 1 . The machine room 6 is provided with a mechanical base 7 . A driving device (traction machine) 8 and a deflecting wheel 9 are supported on the mechanical base 7 . This driving device 8 has: a driving device main body 8a including a motor and a brake; and a driving sheave (traction sheave) 8b rotated by the motor of the driving device main body 8a.

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PUM

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Abstract

An emergency brake device for an elevator has a braking member and braking / releasing means connected to the braking member. The braking member has an attachment member that is capable of rocking about a rotation shaft of a deflector sheave, and a brake shoe that is provided to the attachment member and brought into and out of contact with the deflector sheave side outer peripheral surface of a drive sheave due to the rocking motion of the attachment member. Upon brake release, the braking / releasing means holds the brake shoe in a separated position separated from the drive sheave, and upon braking, the braking / releasing means causes the braking member to rock to thereby bring the brake shoe into abutment with the drive sheave.

Description

technical field [0001] The invention relates to an emergency braking device of an elevator, which brakes the rotation of a driving sheave to stop a car from traveling upwards. Background technique [0002] For example, in the emergency braking device of the conventional elevator apparatus disclosed in Japanese Patent Laid-Open No. Hei 5-193860, the brake sheave adjacent to the axial end portion of the drive sheave rotates integrally with the drive sheave. The brake pulley is provided with a braking surface that engages the axial end of the drive sheave. In addition, the brake pulley is pressed toward the drive sheave by the brake spring. [0003] When the ascending speed of the car exceeds the preset speed, the brake bolt engages with the brake wheel, thereby stopping the rotation of the brake wheel. When the brake pulley stops, the drive sheave is braked by friction with the brake surface. [0004] However, in the above-mentioned conventional emergency braking device, it...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66B5/02B66D5/08B66D5/30
CPCB66B5/02B66D5/08B66D5/30
Inventor 伊藤和昌
Owner MITSUBISHI ELECTRIC CORP