KR20160085532A

KR20160085532A - Elevator emergency stop device

Info

Publication number: KR20160085532A
Application number: KR1020150002639A
Authority: KR
Inventors: 이홍근
Original assignee: 현대엘리베이터주식회사
Priority date: 2015-01-08
Filing date: 2015-01-08
Publication date: 2016-07-18

Abstract

The present invention relates to an elevator emergency stop device which can secure constant braking power by integrally manufacturing a gib and a disk spring of the elevator emergency stop device to easily manage an assembly tolerance and can prevent damage to a traction machine and the emergency stop device by attaching a sliding plate to enable the return of an elevator car after braking. When an elevator cage (100) does a free fall due to speeding (1.2 times greater than a rated speed) or the breaking of a rope, an act arm (600) of the emergency stop device (500) is pulled up by the rope connected to a rope connection unit (300) of a governor (200) and thus the gib (700) is moved up to additionally compress the disk spring (900). Therefore, the gib (700) tightly cramps a rail (800) to stably stop the elevator cage (100) by reducing the speed of the elevator cage (100) by the friction between the gib (700) and the rail (800).

Description

[0001] Elevator emergency stop device [0002]

[0001] The present invention relates to an elevator emergency stop device, more particularly, to an elevator emergency stop device in which a gib (GIB) of an elevator emergency stop device and a disk spring are integrally formed so as to facilitate assembly tolerance management, And an elevator emergency stop device capable of restoring the elevator car after braking by attaching a sliding plate to prevent damage to the hoisting machine and the emergency stop device.

Generally, the elevator is provided not only when the rope is cut off but also when there is any abnormality, so that a governor is installed to prevent the elevator from dropping abnormally rapidly. Such a governor is usually provided with a governor rope When the speed of the elevator rises abnormally after the main wheel is rotated to rotate the main wheel, the pendulum of the governor main wheel is opened to the outside by the centrifugal force, and the overspeed switch is operated to shut off the motor power of the traction machine The elevator is stopped by operating the brake of the hoisting machine.

However, if the break of the traction machine breaks or the rope breaks, the elevator can not be stopped. Therefore, when the speed exceeds 1.3 times the rated speed, the pendulum of the governor main wheel rises again to pull the rope catcher, So that an emergency stop is possible.

However, in the conventional governor described above, the governor is operated to prevent the elevator from falling down only when the elevator falls freely downward in the descending direction due to cutting of the rope or the like,

There is no safety device other than that the switch for shutting off the main power source is operated during overspeed in the direction, so that there arises a problem in the passenger safety at the time of rise, and when the brake of the elevator hoist machine or the rope slips in the pulley of the hoist machine There is a problem that the elevator does not have a function of stopping the elevator by sensing the elevator when it is moving up and down with the door open from the platform due to an abnormality in the safety circuit,

Therefore, the emergency stop device that stops the car by friction with the rail when the elevator overspeed and the free fall by the rope rupture applies a spring to keep the frictional force constant. Recently, Disk Spring is applied to make a compact structure.

However, since the disk spring has a small displacement with respect to the load, an initial spring force causes an error in each assembly according to the assembly state.

In addition, since the emergency stop device directly connects the disk spring to the jaw frame, it is difficult to confirm the assembly tolerance, so that a braking force error occurs for each product. Also, when returning after braking the emergency stop device, one GIB ) Is fixed to the jaw frame, there is a problem that damage due to overload of the traction machine can not be recovered due to the frictional force between the rail and the Gib, or the traction machine and the emergency stop device are damaged.

Korean Patent Publication No. 10-2003-0069512

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems of the conventional art and it is an object of the present invention to provide an elevator emergency stop apparatus and method for controlling the assembly tolerance by making a gib (GIB) And an elevator emergency stop device capable of preventing the traction machine and the emergency stop device from being damaged by allowing the elevator car to return after braking by attaching a sliding plate.

In order to achieve the above object, according to an embodiment of the present invention, an elevator emergency stop device is connected by a rope connection part 300 of a governor 200, so that an overspeed of the elevator cage 100 When a free fall occurs due to rope breakage or the like, when the ACT arm 600 of the emergency stop device 500 is pulled upward, the disk spring 900 is added as the gib 700 is raised to the upper part So that the gib 700 and the rail 800 can stably stop the elevator cage 100 by the frictional force as the gib Gib tightens the rail 800. [

Also, the gang of the emergency stop device for the elevator and the disk prince are integrally formed to facilitate the assembly tolerance management.

And a sliding plate (DU BUSH) is applied to the rear side of the integral block of the gib and disk prime, thereby minimizing the frictional resistance upon braking and restoring the braking, thereby enabling the emergency stop device to return to the emergency stop device with a small amount of force.

And a guide bar is further attached to the upper and lower portions of the rear side of the integral block so that the integral block can move up and down.

According to the present invention, the elevator emergency stop apparatus according to the present invention is constructed by integrally forming a gib (GIB) of the elevator emergency stop apparatus and a disk spring (Disk Spring), thereby facilitating the management of assembly tolerances and securing a constant braking force, It is possible to return the elevator car after braking by attaching the plate, thereby preventing the traction machine and the emergency stop device from being damaged.

Fig. 1 is an operating structure according to the present invention,
2 is a schematic diagram according to the invention;

The terms and words used in the present specification and claims should not be construed to be limited to ordinary or dictionary meanings, but the inventor may appropriately define the concept of the term to describe its invention in the best way Can be interpreted as meaning and concept consistent with the technical idea of the present invention.

It should be noted that the embodiments described in this specification and the configurations shown in the drawings are merely preferred embodiments of the present invention and do not represent all the technical ideas of the present invention, It should be understood that various equivalents and modifications may be present.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 and 2, when the elevator cage 100 is free to fall due to overspeed (rated speed exceeding 1.2 times) or rope breakage or the like, the elevator emergency stop apparatus according to an embodiment of the present invention may include a governor When the ACT arm 600 of the emergency stop device 500 is pulled upward by the rope 400 connected by the rope connection part 300 of the robot 200, the wedge- As the disk spring 900 is further compressed, the gib (Gib) hits the rail 800 as it ascends.

At this time, the elevator cage 100 is stably stopped by the frictional force between the gib 700 and the rail 800.

The frictional force is determined by the compression amount of the initial disk spring (900) and the additional compression amount after braking, and the braking force is determined by the compression error due to the braking according to the parallelism of the friction material (1100) When manufacturing, it is possible to control the braking force constantly by minimizing the braking force error due to the dimension control.

Further, since the rail 800 is in contact with the friction material 1100 of the gear (Gib) 700 after the braking of the emergency stop device, friction between the rail and the gear is largely generated. As a result, The traction force of the gib and the rail surface generated after the trailer load is small, the cage 100 can not move to the top of the braking state.

In order to solve such a problem, a slip plate (solid lubricated bearing) 1000 is attached to the gib and disk spring integrated rear block 1200 to minimize the frictional coefficient and reduce the frictional force. .

Therefore, the present invention makes it easy to manage the assembly tolerance by making the gib of the emergency stop device for elevator and the disk prism integrally structured.

By applying a sliding plate (DU BUSH) on the rear side of the integral block of the gib and disk prong, the frictional resistance is minimized when returning after braking, so that the emergency stop device can be restored with a small power of the traction machine.

Further, a guide bar can be further attached to the upper and lower portions of the rear side of the integral block so that the integral block can move up and down.

100: Elevator cage 500: Emergency stop device
700: Gib 900: Disk spring
1100: Friction material

Claims

(ACT ARM) of the emergency stop device 500 when the elevator cage 100 is connected by the rope connection part 300 of the governor 200 and a free fall occurs due to the overspeed of the elevator cage 100 The disk spring 900 is further compressed as the Gib 700 is lifted upward when the Gib 700 is pulled upward and the Gib 700 is further compressed as the Gib 700 hits the rail 800. As a result, 700) and the rail (800) cause the elevator cage (100) to stop stably by the frictional force.

The method according to claim 1,
Wherein an emergency stop device for an elevator emergency stop device and a disc prong are integrally formed to facilitate assembly tolerance management.

The method according to claim 1,
(DU BUSH) is applied to the rear side of the integral block of the gib and disk prining to minimize the frictional resistance at the time of braking and return, thereby enabling the emergency stop device to be returned to the emergency stop device with a small force of the hoisting machine .

3. The method of claim 2,
Characterized in that a guide bar is further attached to the upper and lower portions of the rear side of the integral block so that the integral block can move up and down.