KR102341995B1 - Apparatus for braking sheave for elevator - Google Patents

Abstract

The present invention relates to a sheave braking apparatus for an elevator. According to the present invention, the sheave braking apparatus for an elevator comprises a brake disc (10) integrally connected to a sheave of an elevator driver to be axially rotated and a brake (20) braking and releasing the brake disk as being close to or being separated from any one of both sides while surrounding both sides of the outer surface of the brake disk. The brake (20) includes a brake base (21), a fixed plate (22), a movable plate (23), a brake pin (24), a brake handle (25), and a pin spring (26). A concave groove (21b) is provided on one side of the outer surface of the brake base and a convex protrusion (25a) inserted into and separated from the concave groove is provided on one side of the inner surface of the brake handle corresponding thereto, thereby braking and releasing the brake disc. Accordingly, reliability for braking the sheave can be basically provided, thereby providing an effect of increasing product competitiveness, etc. In addition, an accident due to the self-releasing of the brake handle can be prevented, thereby providing effects of increasing safety and providing stability.

Description

Sheave brake system for elevators {APPARATUS FOR BRAKING SHEAVE FOR ELEVATOR}

The present invention relates to a sheave braking device for an elevator, and more particularly, to a sheave braking device for an elevator in which a brake is disposed adjacent to a brake disc integrally connected with the sheave to perform braking on the sheave.

In general, in an elevator device that is installed for vertical movement of people or things in a building built for residential or business use, after installing a hoist through a separate machine room or inside a hoistway, the rope wound on the main sheave of the hoist is It is configured to move the passenger in the elevator car by selectively raising or lowering the elevator car and the counterweight respectively connected to one end and the other end of the rope by controlling to move.

That is, when the passenger in the elevator car operates the destination floor input button or operates the ascending or descending button at the platform of each floor, the elevator control panel controls accordingly to stop the elevator car on the corresponding floor. .

However, in the elevator operation as described above, during the control process, the elevator car slides in the landing section or overspeeds the specified speed in the ascending or descending direction due to the occurrence of an abnormal state in the elevator control system or a decrease in the braking force of the elevator brake device. An accident may occur, and accordingly, the elevator device is provided with a rope braking device to prevent safety accidents as described above in advance.

On the other hand, the conventional configuration of the rope braking device of the elevator is made of a direct compression method for pressing the rope through hydraulic pressure or the force of a spring, and as a return method for releasing the compression state of the rope, a hydraulic type or a spring type, A motor type or a manual return method will be used.

And, in the conventional braking device, the brake disk is integrally connected to one side of the sheave, a brake for braking the brake disk is installed, and the brake handle is axially rotated to perform braking while braking the brake disk. .

However, since the brake device of the prior art does not have a separate brake handle fixing means for fixing the brake handle in the shaft-rotated state after rotating the shaft, the brake handle automatically moves, thereby causing a safety accident. There were problems such as

In addition, since the prior art braking device is a method that applies the brake to only one side of the sheave, there is a risk that braking failure may occur because the balance with the force applied to the opposite side of the sheave is not met, and in particular, a large-capacity elevator drive In this case, the braking operation becomes more difficult and there is a risk of a safety accident.

Republic of Korea Patent Publication No. 10-2008-0099973

The present invention has been devised to solve this problem, and a stopper protrusion is installed on one side of the brake handle, and a stopper protrusion is provided on one side of the brake body corresponding to the stopper protrusion so that the stopper protrusion is caught and fixed and unfixed. An object of the present invention is to provide a sheave braking device for an elevator that can be fixed without loosening naturally after the shaft rotation is operated.

Another object of the present invention is to provide a sheave braking device for an elevator, in which brake discs are disposed on both sides of the sheave and correspondingly brakes are disposed adjacent to the respective brake discs to brake the respective brake discs.

A sheave braking device for an elevator according to the present invention for achieving the above object includes: a brake disk integrally connected to the sheave of the elevator driver to rotate the shaft; and a brake that brakes and releases the brake disk while being closely and separated from one of the both surfaces while surrounding both sides of the outer surface of the brake disk, wherein the brake comprises: a brake base provided with a shaft through hole and fixedly installed in the elevator driver; a fixing plate connected to the brake base and spaced apart from each other by a predetermined interval and having an inner side surface in contact with one side surface of the brake disc; a movable plate disposed on the inner surface of the brake base in a state of being spaced apart from the fixed plate by a predetermined distance in parallel and provided with a pinhole coincident with the shaft through-hole on one side and contacting the other side of the brake disk; a brake pin having a head portion disposed in the pinhole and a body portion protruding to the outside of the brake base through the shaft through hole; a brake handle connected to an end protruding outwardly of the brake pin and axially rotating along an outer surface of the brake base; and a pin spring interposed between the brake pin and the brake base to elastically support the brake pin, wherein a concave groove is provided on one side of an outer side of the brake base, and a concave groove is provided on one side of the inner side of the brake handle corresponding thereto. A convex protrusion to be inserted and separated from the concave groove is provided, and when the brake handle is rotated in a circular arc direction at a predetermined angle, the convex protrusion of the brake handle is separated from the concave groove of the brake base and located close to the outer surface of the brake base while pulling the brake pin to the outside, the movable plate interlocked therewith is moved in the direction of the brake base to release the brake on the brake disc.

In addition, in the sheave braking device for an elevator according to the present invention, the brake discs may be provided on both sides of the sheave, respectively.

In addition, in the sheave braking device for an elevator according to the present invention, the elevator driver may be further provided with a brake mounting plate for mounting the brake on one side adjacent to the brake disk.

In addition, in the sheave braking device for an elevator according to the present invention, the brake mounting plate may be further provided with a plurality of seating portions for disposing the brakes at equal intervals along an arc direction.

In addition, in the sheave braking device for an elevator according to the present invention, the seating portion has a concave cutout structure in which a portion is cut in the central axis direction of the brake mounting plate, and the brake is in a state in which the brake base is inserted into the seating portion In this case, a fixing wing may be further provided on one side of the brake so that the brake is fixed to a predetermined portion of the brake mounting plate adjacent to the seating portion.

In addition, in the sheave braking device for an elevator according to the present invention, the brake mounting plate blocks the brake seated on the seating part on one side of the outer surface from protruding from the brake mounting plate to the outside so as to surround the brake outside part A brake protection plate may be further provided.

In addition, in the sheave braking device for an elevator according to the present invention, the brake protection plate may have a structure that surrounds both sides and the lower edge of the brake seated on the seating part.

In addition, in the sheave braking device for an elevator according to the present invention, a handle fixing means for fixing the brake handle is further provided after the brake handle is axially rotated along a circular arc direction at a predetermined angle to release the brake on the brake disk can

In addition, in the sheave braking device for an elevator according to the present invention, the handle fixing means is provided with a stopper projection on one side of the brake handle facing the brake base, and the stopper projection on the surface of the brake base corresponding thereto It may be that a stopper water unit that manages the jamming and releasing of the jamming is provided.

In addition, in the sheave braking device for an elevator according to the present invention, the stopper projection has a first inclined surface that is inclined upward toward the rear from the tip in the direction in which the brake handle rotates the shaft, and a structure facing at the end of the first inclined surface is provided with a first locking protrusion having a second inclined surface that is in surface contact with the first inclined surface on one side and is inclined upward in the axial rotation direction, and a facing structure at the end of the second inclined surface. It may be provided with a second locking jaw having.

In addition, in the sheave braking device for an elevator according to the present invention, the stopper male part is a stopper while the first inclined surface of the stopper projection on one side of the bottom corresponding to the second inclined surface is slid along the second inclined surface of the stopper male part. An elevating support spring for elastically supporting that the hand part is pressed downward may be further provided.

In addition, in the sheave braking device for an elevator according to the present invention, the stopper male part is the stopper male part in order to release the latching state of the first stopping jaw of the stopper protrusion caught on the second stopping jaw of the stopper male part. It may be of a position-variable structure that moves in the direction in which the lock between the 1 and 2 locking jaws is released.

In addition, in the sheave braking device for an elevator according to the present invention, the stopper male part moves in a predetermined direction to release the jam between the first and second locking jaws and then returns to the original shape again. A spring may be further provided.

In addition, in the sheave braking device for an elevator according to the present invention, an instantaneous fixing protrusion is provided on one side of the bottom surface to be instantaneously fixed after position movement, and the instantaneous fixing protrusion is hung on one side of the brake base corresponding thereto. It may be that an instantaneous locking jaw to be fixed is further provided.

As described above, in the sheave braking device for an elevator of the present invention, a stopper protrusion is installed on one side of the brake handle, and the stopper protrusion is hooked on one side of the brake body corresponding to the stopper protrusion so as to be fixed and released. By allowing the handle to be fixed without loosening naturally after the shaft is rotated, it is possible to prevent safety accidents caused by self-unscrewing in advance, improving safety and providing stability, etc. have.

In addition, by arranging brake discs on both sides of the sheave and correspondingly arranging brakes adjacent to the respective brake discs to brake each of the brake discs, basically providing stability and reliability for braking of the sheave As a result, it is possible to obtain effects such as being able to improve product competitiveness and the like.

1 and 2 are perspective views showing a sheave braking device for an elevator according to the present invention.
3 is an exploded perspective view showing a sheave braking device for an elevator according to the present invention.
4 is a cross-sectional view showing a sheave braking device for an elevator according to the present invention.
5 is a schematic view showing the braking state of the sheave through the sheave braking device for an elevator according to the present invention.
6 is a schematic view showing a state of releasing the brake of the sheave through the sheave braking device for an elevator according to the present invention.
7 is a schematic diagram sequentially showing a process in which the brake handle is locked in the sheave braking device for an elevator according to the present invention.
8 is a schematic view showing a state in which the stopper projection of the brake handle is caught and fixed to the stopper male part of the brake base in the sheave braking device for an elevator according to the present invention.
9 is a schematic view showing a state in which the stopper projection of the brake handle is released from the stopper number of the brake base and returned to the original state in the sheave braking device for an elevator according to the present invention.

Hereinafter, the present invention will be described based on the accompanying drawings.

1 to 6 , the sheave braking device for an elevator according to the present invention includes a brake disc 10 and a brake 20 .

The brake disc 10 has a ring plate structure that is integrally connected with the sheave 11 of the elevator driver and is axially rotated by being accumulating on the drive shaft 13 connected to the motor 12 .

The brake 20 performs a function of braking and releasing the brake disk 10 while being close to and separated from either side of the both sides while surrounding both sides of the outer surface of the brake disk 10 .

More specifically, the brake 20 includes a brake base 21 , a fixed plate 22 , a movable plate 23 , a brake pin 24 , a brake handle 25 , and a pin spring 26 . ) is included.

A shaft through hole 21a is provided on one side of the brake base 21 and has a rectangular block structure that is fixedly installed in the elevator driver.

The fixing plate 22 is connected to the brake base 21 at a predetermined distance in parallel and has a plate structure in which one side of the inner surface is in contact with one side of the brake disc 10 .

The movable plate 23 is disposed on the inner surface of the brake base 21 in a state of being spaced apart from the fixed plate 22 by a predetermined distance in parallel with the fixed plate 22, and a pin hole 23a coincident with the shaft through hole 21a is provided on one side. and has a plate material structure in contact with the other side surface of the brake disc 10 .

The brake pin 24 has a long, multi-stage cylindrical structure in which a head portion 24a is disposed in the pinhole 23a and a body portion 24b protrudes to the outside of the brake base 21 through the shaft through hole 21a. is made of

The brake handle 25 has a long bar structure in which an end protruding outward of the brake pin 224 and one end are connected, and the other end is axially rotated along the outer surface of the brake base 21 .

The pin spring 26 has a coil spring structure interposed between the brake pin 24 and the brake base 21 to elastically support the protruding and retracting movement of the brake pin 24 with respect to the brake base 21 .

In addition, a concave groove 21b is provided on one side of the outer surface of the brake base 21, and a convex protrusion ( 25a) is provided, and when the brake handle 25 is axially rotated in the arc direction at a predetermined angle, the convex protrusion 25a of the brake handle 25 is separated from the concave groove 21b of the brake base 21 at the same time While being positioned close to the outer surface of the brake base 21, the brake pin 24 is pulled outward of the brake base 21 to move the movable plate 23 interlocked therewith in the direction of the brake base 21 The brake on the brake disc 10 is released.

Meanwhile, the brake disc 10 is provided on both sides of the sheave 11 and is integrally connected.

In addition, the lift driver is provided with a brake mounting plate 14 for mounting the brake 20 on one side adjacent to the brake disk 10 .

Here, the brake mounting plate 14 is provided with a plurality of seating portions 14a so that the brakes 20 are equally spaced along the arc direction.

In addition, the seating portion 14a has a concave cutout structure in which a portion is cut in the central axis direction of the brake mounting plate 14, and the brake 20 corresponding to this has the brake base 21 being the seating portion. A fixing wing 27 is provided on one side of the brake 20 so that the brake 20 is fixed to a predetermined portion of the brake mounting plate 14 adjacent to the seating portion 14a in the state inserted at 14a.

And, the brake mounting plate 14 blocks the brake 20 seated on the seating portion 14a on one side of the outer surface from protruding from the brake mounting plate 14 to the outside of the brake 20. A brake protection plate 15 is provided to surround it.

In addition, the brake protection plate 15 has a structure that surrounds both sides and the lower edge of the brake 20 seated on the seating portion 14a.

Unexplained reference numerals 22a and 23b denote friction pads installed on opposite surfaces of the fixed plate 22 and the movable plate 23 to closely fix both surfaces of the brake disk 10 .

An example of the use of the sheave braking device for an elevator according to an embodiment of the present invention according to this configuration is as follows.

First, when the brake handle 25 is placed in its original state (12 o'clock), the convex protrusion 25a of the brake handle 25 is inserted into the concave groove 21b of the brake base 21, and accordingly The fixed plate 22 is in close contact with one side of the brake disc 10 and the movable plate 23 is in close contact with the other side of the brake disc 10 so that the brake disc 10 is fixed in a locked state.

Then, in order to unlock the brake disc 10, when the brake handle 25 is rotated (clockwise), the convex protrusion 25a of the brake handle 25 becomes the concave groove of the brake base 21 ( 21b) and is placed on the outer surface of the brake base 21.

At the same time, the brake pin 24 connected to the brake handle 25 also moves to the right in the drawing, and the movable plate 23 is also moved to the right in conjunction with this. As a result, the movable plate 23 is a brake disc. As the surface contact is separated from (10), the locking of the brake disk (10) is released.

In this state, it is possible to rotate the sheave 11 by operating the drive shaft 13 through the motor 12 .

On the other hand, referring to FIGS. 7 to 9, looking at the sheave braking device for an elevator according to the present invention is as follows.

In the sheave braking device for an elevator according to the present invention, in particular, the brake handle 25 is axially rotated along a circular arc direction at a predetermined angle to release the brake on the brake disc 10, and then to fix the brake handle 25 A handle fixing means is provided for this.

More specifically, the handle fixing means is provided with a stopper protrusion 25b on one side of the brake handle 25 facing the brake base 21, and is formed on the surface of the brake base 21 corresponding thereto. It has a structure provided with a stopper male part 30 that controls the locking and release of the stopper protrusion (25b).

In more detail, the stopper protrusion 25b includes a first inclined surface 25b1 that is inclined upward toward the rear from the tip in the direction in which the brake handle 25 is axially rotated, and at the end of the first inclined surface 25b1. A first locking protrusion 25b2 having a facing structure is provided, and the stopper male part 30 corresponding thereto is in surface contact with the first inclined surface 25b1 on one side and a second inclined surface inclined upward along the axial rotation direction ( 31) and a second locking protrusion 32 having a facing structure at the end of the second inclined surface 31 is provided.

And, the stopper male part 30 has a first inclined surface 25b1 of the stopper protrusion 25b on one side of the bottom surface corresponding to the second inclined surface 31, and the second inclined surface 31 of the stopper male part 30 is A lifting support spring 33 is provided for elastically supporting the stopper water part 30 being pressed downward while sliding along.

In addition, the stopper male part 30 is the stopper male part to release the latching state of the first stopping protrusion 25b2 of the stopper protrusion 25b caught on the second stopping protrusion 32 of the stopper male part 30 . (30) has a position-variable structure to move in the direction in which the locking between the first and second locking jaws 25b2 and 32 is released.

In addition, the stopper male part 30 is a forward/backward support spring elastically supported on one side of the stopper male part 30 so as to return to its original state after moving in a predetermined direction to release the engagement between the first and second stopping jaws 25b2 and 32 . (34) is provided.

In addition, the stopper male part 30 is provided with an instantaneous fixing protrusion 35 to be instantaneously fixed after position movement on one side of the bottom surface, and the instantaneous fixing protrusion 35 is hung on one side of the brake base 21 corresponding thereto. An instantaneous locking jaw 21c is provided so as to be fixed.

An example of the use of the sheave braking device for an elevator according to an embodiment of the present invention according to this configuration is as follows.

First, in order to unlock the brake disc 10, when the brake handle 25 is rotated (clockwise), the convex protrusion 25a of the brake handle 25 becomes the concave groove of the brake base 21 ( 21b) and is placed on the outer surface of the brake base 21.

At the same time, the stopper protrusion 25b of the brake handle 25 is caught by the stopper male part 30 so that the brake handle 25 is momentarily fixed.

In more detail, when the brake handle 25 is rotated clockwise, the stopper projection 25b reaches the stopper male part 30, and at this time, the first inclined surface 25b1 of the stopper projection 25b becomes the stopper male part ( 30) and slides on the second inclined surface 31.

Then, as the stopper protrusion 25b progresses, the stopper male part 30 is pressed downward in a state resiliently supported by the elevating support spring 33 while guiding the stopper protrusion 25b so that the progress of the stopper protrusion 25b becomes smooth. , when the first inclined surface 25b1 rides over the second inclined surface 31 and the progress of the stopper protrusion 25b is completed, the first engaging protrusion 25b2 of the stopper protrusion 25b is the second engaging part of the stopper hand part 30 . As a result, the brake handle 25 is caught by the stopper male part 30 of the brake base 31 and is temporarily fixed.

On the other hand, when it is desired to release the fixed state of the brake handle 25 , the stopper male part 30 is moved to the right in the drawing, and the first locking jaw 25b2 hung on the second locking jaw 32 is caught. By releasing the state, the brake handle 25 can be restored to its original state.

At this time, the stopper male part 30 has the instantaneous fixing protrusion 35 on its bottom caught on the instantaneous locking jaw 21c of the brake base 21 and is in a momentarily fixed state, and then returns the brake handle 25 to its original state. After that, it is possible to elastically return the stopper male part 30 to the original position through the advancing and retreating support spring 34 by pushing it back to the original position.

As described above, in the sheave braking device for an elevator of the present invention, a stopper protrusion is installed on one side of the brake handle, and the stopper protrusion is hooked on one side of the brake body corresponding thereto to fix and release the brake handle, thereby providing a brake handle. By allowing the shaft to be fixed without loosening naturally after operating the shaft, it is possible to prevent safety accidents caused by spontaneous loosening in advance, improving safety and providing stability.

In addition, by arranging brake discs on both sides of the sheave and correspondingly arranging brakes adjacent to the respective brake discs to brake each of the brake discs, basically providing stability and reliability for braking of the sheave As a result, product competitiveness can be improved.

As described above, the present invention has been described with reference to the above preferred embodiments, but the technical field to which the present invention belongs in the claims and detailed description of the present invention, as well as modified examples in which these embodiments are simply combined and applied with conventional known techniques All technologies that can be easily changed and used by those skilled in the art will be considered to be naturally included in the technical scope of the present invention.

**Explanation of symbols for main parts of the drawing**
10: brake disc 11: sheave
12: motor 13: drive shaft
14: brake mounting plate 14a: seating part
15: brake protection plate 20: brake
21: brake base 21a: shaft through hole
21b: concave groove 21c: momentary latching jaw
22: fixed plate 22a: friction pad
23: movable plate 23a: pinhole
23b: friction pad 24: brake pin
24a: head part 24b: body part
25: brake handle 25a: convex
25b: stopper projection 25b1: first inclined surface
25b2: first locking jaw 26: pin spring
27: fixed blade 30: stopper hand part
31: second inclined surface 32: second locking jaw
33: elevating support spring 34: forward and backward support spring
35: instantaneous fixing projection 36: escape prevention wing

Claims (3)

a brake disk integrally connected to the sheave of the elevator driver to rotate the shaft; and
a brake that brakes and releases the brake disk while being closely and separated from any one of the both sides while surrounding both sides of the outer surface of the brake disk;
In the sheave braking device for an elevator comprising:
The brake is
a brake base provided with a shaft through hole on one side and fixedly installed in the elevator driver;
a fixing plate connected to the brake base and spaced apart from each other by a predetermined interval and having an inner side surface in contact with one side surface of the brake disc;
a movable plate disposed on the inner surface of the brake base in a state of being spaced apart from the fixed plate by a predetermined distance in parallel and provided with a pinhole coincident with the shaft through hole on one side and contacting the other side of the brake disk;
a brake pin having a head portion disposed in the pinhole and a body portion protruding to the outside of the brake base through the shaft through hole;
a brake handle connected to an end protruding outwardly of the brake pin and axially rotating along an outer surface of the brake base; and
a pin spring interposed between the brake pin and the brake base to elastically support the brake pin;
including,
A concave groove is provided on one side of the outer surface of the brake base, and a convex protrusion that is inserted into and separated from the concave groove is provided on one side of the inner surface of the brake handle corresponding thereto,
When the brake handle is axially rotated in a circular arc direction at a predetermined angle, the convex protrusion of the brake handle is separated from the concave groove of the brake base and is closely located on the outer surface of the brake base while pulling the brake pin to the outside and interlocking with it By moving the movable plate in the direction of the brake base, the brake on the brake disk is released,
and a handle fixing means for fixing the brake handle after the brake handle is axially rotated along a circular arc direction at a predetermined angle to release the brake on the brake disc. According to claim 1,
The stopper projection is provided with a first inclined surface inclined upward toward the rear from the tip in the direction in which the brake handle is axially rotated, and a first locking jaw having a facing structure at the end of the first inclined surface, and the corresponding number of stoppers A sheave braking device for an elevator, characterized in that the part is provided with a second inclined surface that is in surface contact with the first inclined surface on one side and inclined upward along the shaft rotation direction, and a second locking jaw having a facing structure at the end of the second inclined surface. . 3. The method of claim 2,
The stopper male part has an elevating support spring elastically supporting that the stopper male part is pressed downward while the first inclined surface of the stopper protrusion slides along the second inclined surface of the stopper male part on one side of the bottom surface corresponding to the second inclined surface. A sheave braking device for an elevator, characterized in that it is further provided.

Images