JP2001058770A - Brake releasing device of elevator hoist - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a brake releasing device of elevator winch capable of taking an easy and quick measure for occurrence of any failure and shortening the time requisite for the measure. SOLUTION: An interlocking device 17 and actuation device 26 are installed at the upper edge of a landing gateway 3 of an elevator shaft 1, and a sliding door 21 is installed which is opened and closed by an interlocking line 19 of the device 17. A rotation transmitting device 29 is installed on an actuating pulley 27 of the actuation device 26 to drive a takeup device 33, and a flexible line 13 is coupled with the takeup device 33 and a brake device of a hoist so that a brake releasing mechanism 34 is formed. A coupling tool couples the interlocking line 19 manually with the actuating line 28 of the actuation device 26. Thereby the two members are coupled together by the coupling tool in the event of any failure to open and close the sliding door 21 manually, and the brake device is disengaged through the takeup device 33, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a brake release device for an elevator hoist that releases the braking operation of a hoist installed in a hoistway as needed by manual operation.

[0002]

2. Description of the Related Art FIGS. 6 and 7 show a conventional brake release device for an elevator hoisting machine. FIG. 6 is a longitudinal sectional view of a lower portion of an elevator hoistway, and FIG. 7 is an enlarged view of a portion A in FIG. is there.
In the figure, 1 is a hoistway of an elevator, 2 is a hoistway 1
Hall, 3 is hall entrance, 4 is hall entrance 3
Sliding door that opens and closes. Reference numeral 5 denotes a hoisting machine installed in a pit of the hoistway 1, which is provided with a drive sheave 6 and a braking device 7. Reference numeral 8 denotes a main rope wound around the drive sheave 6 and suspending an elevator car (not shown). Reference numeral 9 denotes a control panel installed on the pit side wall of the hoistway 1.

[0003] Reference numeral 10 denotes a braking release mechanism, which is a flexible strip 1 comprising a flexible outer cylinder 11 and a wire rope 12 inserted through the flexible outer cylinder 11 and having one end connected to the braking device 7.
3. L-shaped horizontal drawing is placed on the floor of landing 2 and L
The frame 14 in which the end of the flexible outer cylinder 11 on the side opposite to the braking device 7 is fixed to the upper end of the vertical drawing of the character, and the L-shaped bent portion of the L-shaped bent portion of the frame 14 is formed by a pin 15 The L-shaped horizontal picture is horizontally arranged, and is constituted by a lever 16 to which the end of the wire rope 12 on the side opposite to the braking device 7 is connected to the upper end of the L-shaped vertical picture.

[0004] The conventional brake release device of the elevator hoisting machine is configured as described above, and the flexible strip 13 is removed from the braking device 7 of the hoisting machine 5 during normal operation of the elevator. Then, the brake release mechanism 10 is stored in the pit of the hoistway 1, and is disposed at a position where the sliding door 4 of the landing 2 can be opened and easily pulled out to the floor of the landing 2.

[0005] And passengers are trapped in the car,
When an abnormality occurs such that the braking operation of the braking device 7 needs to be released due to a failure or the like, the sliding door 4 of the hall 2 is opened, and the worker enters the pit of the hoistway 1 and the flexible device is attached to the braking device 7. 13 is connected. Further, the frame 14 of the brake release mechanism 10 to which the flexible strip 13 is connected and the lever 16 is mounted is placed on the floor of the landing 2.

Next, when the worker steps on the horizontal portion of the lever 16 of the brake release mechanism 10 with his / her feet, the wire rope 12
Is pulled, and the braking action of the braking device 7 of the hoisting machine 5 is released by this operation. As a result, the hoisting machine 5 enters the non-braking state, and the car moves up and down at a very low speed. In this case, the direction of raising and lowering the car is lowered in the winding type elevator, and in the traction type elevator, the heavier one of the car and the counterweight (not shown) is lowered. Then, when an abnormality occurs, the car is moved to an appropriate place to rescue the passengers or repair the malfunction.

[0007]

In the conventional brake release device for an elevator hoist described above, the pit of the hoistway 1 is narrow in the case of a small elevator or the like, and the storage of the brake release mechanism 10 in the pit. May not be possible. In such a case, the brake release mechanism 10 is stored in a place outside the hoistway 1. However, depending on the situation of the building in which the elevator is installed, a storage place that can respond immediately to the occurrence of an abnormality may not be obtained. However, there has been a problem in that the promptness of the countermeasure work for occurrence of abnormality is impaired.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and an object of the present invention is to provide a brake release device for an elevator hoisting machine which can easily and quickly take measures when an abnormality occurs.

[0009]

In the brake release device for an elevator hoist according to the present invention, an endless pulley and an endless pulley are pivotally mounted on opposite sides of an upper edge of a landing entrance of a hoistway. An interlocking device consisting of an interlocking strip wound around an interlocking pulley, a sliding door connected to one longitudinal side of the interlocking strip to open and close the landing entrance, an operating pulley pivotally mounted on both sides of the upper edge and separated from each other; An actuating device consisting of an actuated strip wound endlessly around an actuating pulley, a winding device driven by a rotary transmission device provided on one of the actuating pulleys, and one end connected to the winding device at one end Is a brake release mechanism consisting of a flexible strip connected to the braking device of the hoisting machine installed in the hoistway, and the longitudinal main parts of both the interlocking strip and the operating strip sandwiched by manual operation. And a connector to press The binding member connects said both manually opening and closing the sliding door, interlock, actuator, rotary transmission,
The braking action of the braking device is released through the operation of the winding device and the braking release device.

In the brake releasing device for an elevator hoist according to the present invention, one is connected to one longitudinal side of the interlocking strip and the other is connected to the other side of the longitudinal length of the interlocking strip, and operates in opposite directions. A sliding door comprising a double sliding door for opening and closing the landing entrance is provided.

In the brake release device for an elevator hoist according to the present invention, the landing strip is connected to one longitudinal side of the interlocking strip to operate in one direction to open the landing entrance, and to operate in the other direction. A sliding door comprising a single sliding door that closes an entrance is provided.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 1 to 5 are views showing an example of an embodiment of the present invention. FIG. 1 is a front view of an elevator hall viewed from the inside of a hoistway, and FIG. 2 is an enlarged cross section taken along line BB of FIG. FIG. 3 is a left side view of FIG. 2, FIG. 4 is an enlarged view of a cross section taken along line CC of FIG.
FIG. 5 is a view corresponding to FIG. 4 for explaining an operation situation in which the braking action of the hoist is released when an abnormality occurs.

An elevator is configured in the same manner as in FIGS. 6 and 7 except for FIGS. In the figure, 1 is a hoistway of an elevator, 2 is a landing arranged on the hoistway 1, 3 is a landing entrance, and 17 is an interlocking device. It is constituted by a pulley 18 and an interlocking strip 19 which is endless and is wound around the interlocking pulley 18.

Reference numeral 20 denotes a guide rail having a length of 3 at the landing entrance.
Are mounted along the upper edge of the 21 is the landing entrance 3
Sliding door that opens and closes the guide rail 20
, And one of the sliding doors is connected to the upper side of the long side of the interlocking strip 19 by a locking piece 23, and the other of the sliding doors is connected to the upper side of the long side of the interlocking strip 19 by a locking piece 24. It is connected to the lower side and operates in opposite directions.

An engaging member 25 is provided on one of the sliding doors 21 and engages with a door device of a car of the elevator (not shown). An actuating device 26 is provided on both sides of the upper edge of the landing entrance 3. An operating pulley 27 pivotally mounted apart from the other and an operating strip 28 wound around the endless operating pulley 27
It is constituted by. Reference numeral 29 denotes a rotary transmission, which is fixed to one operating pulley 27 and is provided coaxially with the operating pulley 27 and a small gear 30 which is pivotally attached to a shaft 31 provided at the upper edge of the landing entrance 3. Large gear 32 meshing
It is constituted by.

Numeral 33 denotes a large gear 32 fixed to the large gear 32.
A winding device 34 is constituted by a winding cylinder provided coaxially with the winding device. A braking release mechanism 34 is provided. The winding cylinder of the winding device 33 has one end inserted through the flexible outer cylinder 11 and the flexible outer cylinder 11. And the other end is fixed to a flexible strip 13 composed of a wire rope 12 connected to a braking device 7 of a hoisting machine 5 installed in the hoistway 1 and an upper edge of the landing entrance 3. The flexible outer cylinder 11 includes a support 35 that holds an end of the flexible outer cylinder 11 on the winding device 33 side at a predetermined position.

Reference numeral 36 denotes a connecting member, which is a U-bolt 37, a pressing piece 38 which is fitted with a gap formed at the tip of the U-bolt 37, and a pressing piece 3 which is screwed into each tip of the U-bolt 37.
8 is pressed by a nut 39, and the longitudinal major portions of both the interlocking strip 19 and the operating strip 28 are fitted into the recesses of the U bolt 37 by manual operation. To press and connect the two. Since the connecting member 36 is a small article, it can be easily stored by being hooked on the back surface of the sliding door 21 or the like at normal times.

In the brake releasing device for an elevator hoist constructed as described above, the linking member 19 and the operating member 2 are connected by the connecting member 36 during normal operation of the elevator.
8 are not connected to each other, and one operation of the two is not transmitted to the other. In this state, the engaging body 25 is engaged with an engaging plate (not shown) of the door device provided on the elevator car, and one of the sliding doors 21 provided with the engaging body 25 is driven by the door device to open and close. .

The opening / closing operation of one of the sliding doors 21 is transmitted to the other sliding door 21 by the interlocking device 17 and operates in opposite directions to open and close the landing entrance 3. Also,
During normal operation of the elevator, the operating device 26, the rotation transmission device 29, the winding device 33, and the brake release device 34 are in a stationary state. Then, when an abnormality occurs in which a passenger is trapped in the car or the braking operation of the braking device 7 needs to be released due to a failure or the like, the elevator staff manually and fully opens the sliding door 21 from the landing 2.

Next, the interlocking strip 19 is connected by the connecting member 36.
And the operating strip 28 are connected to each other. When the elevator staff closes the sliding door 21, the operation of the sliding door 21 is changed to the operation device 26, the rotation transmission device 29, and the winding device 3.
3 and the transmission of the brake release device 34 and the winding device 33
The wire rope 12 is wound around the winding drum. By the pulling operation of the wire rope 12 by this, the braking action of the braking device 7 of the hoisting machine 5 is released.

As a result, the hoisting machine 5 is in the non-braking state, and the car moves up and down very slowly. In this case, the direction of raising and lowering the car is lowered in the winding type elevator, and in the traction type elevator, the heavier one of the car and the counterweight (not shown) is lowered. Then, when an abnormality occurs, the car is moved to an appropriate place to rescue the passengers or repair the malfunction.

The operation of releasing the braking action of the braking device 7 as described above is stored in an appropriate place where the connecting tool 36 can be easily used when necessary, that is, in the back surface of the sliding door 21 or the like. For this reason, the countermeasure work for occurrence of abnormality can be easily and quickly performed by the elevator staff who has arrived at the elevator installation site. Therefore, it is possible to reduce the time required for rescuing and restoring a passenger when an abnormality occurs.

In order to release the braking action of the braking device 7, a pulling force of the wire rope 12 of about 100 kg is generally required. However, in the embodiment of FIGS.
The operating force for closing the sliding door 21 during the release operation is enlarged by the rotary transmission 29 and transmitted to the wire rope 12. Therefore, the pulling force required for releasing the braking of the braking device 7 can be easily obtained. Therefore, the braking action of the braking device 7 can be easily released by the small door closing operation force of the sliding door 21.

Embodiment 2 FIG. In the embodiment of FIGS. 1 to 5, it is assumed that the sliding door 21 is a single sliding door. In addition, an interlocking device 17 is provided which is connected to the operating device 26 by a connecting tool 36 when an abnormality occurs, and is only for operating the operating device 26. With such a configuration, the operation of the embodiment shown in FIGS. 1 to 5 can be obtained also for the landing doorway 3 provided with the single sliding door.

[0025]

As described above, the present invention relates to an interlocking pulley which is pivotally mounted on both sides of an upper edge of a landing entrance of a hoistway, and which is endless and which is wound around the interlocking pulley. Interlocking device, a sliding door connected to one longitudinal side of the interlocking strip to open and close the landing entrance, an operating pulley that is pivotally mounted on both sides of the upper edge and separated from each other, and is wound endlessly around the operating pulley. Operating device consisting of an operating strip, a winding device driven by a rotary transmission device provided on one of the operating pulleys, and a hoist having one end connected to the winding device and the other end installed in a hoistway. A braking release mechanism composed of a flexible strip connected to a braking device of the machine, and a connecting tool for pressing the main portions of both the longitudinal sections of the interlocking strip and the operating strip by manual operation. .

The sliding door is manually opened / closed by connecting the above-mentioned parts with the connecting tool when necessary, and the braking action of the braking device is performed through the operations of the interlocking device, the operating device, the rotation transmission device, the winding device and the braking release device. Is released. And
Since the connecting device can be easily stored in an appropriate place such as the backside of the sliding door, it is easy for the elevator staff arriving at the elevator installation site to take countermeasures for the occurrence of an abnormality that requires the brake release device of the hoisting machine to be released. It can be performed quickly. Therefore, there is an effect that the time required for rescuing and restoring a passenger when an abnormality occurs is reduced.

Further, as described above, the present invention is configured such that one is connected to one longitudinal side of the interlocking strip and the other is connected to the other side of the interlocking strip, and operates in opposite directions to open and close the landing entrance. A sliding door comprising both sliding doors is provided.

[0028] With this, the interlocking strut and the actuating strut are connected by the connecting tool when necessary, and the sliding door composed of both sliding doors is manually opened / closed. The braking action of the braking device is released via the operation. Then, since the connecting device can be easily stored in an appropriate place such as the backside of the sliding door, a countermeasure work for occurrence of an abnormality that requires the release of the braking of the hoist braking device by the elevator staff arriving at the elevator installation site. It can be done easily and quickly. Therefore, there is an effect that the time required for rescuing and restoring a passenger when an abnormality occurs is reduced.

Further, as described above, the present invention is a piece that is connected to one longitudinal side of the interlocking strip and operates in one direction to open the landing entrance, and operates in the other direction to close the landing entrance. A sliding door comprising a sliding door is provided.

Thus, the interlocking member and the operating member are connected by the connecting member when necessary, and the sliding door composed of a single sliding door is manually opened / closed, so that the interlocking device, the operating device, the rotary transmission device, the winding device, and the brake release device are opened. The braking action of the braking device is released via the operation. Then, since the connecting device can be easily stored in an appropriate place such as the backside of the sliding door, a countermeasure work for occurrence of an abnormality that requires the release of the braking of the hoist braking device by the elevator staff arriving at the elevator installation site. It can be done easily and quickly. Therefore, there is an effect that the time required for rescuing and restoring a passenger when an abnormality occurs is reduced.

[Brief description of the drawings]

FIG. 1 is a view showing a first embodiment of the present invention, and is a front view of a landing of an elevator as viewed from inside a hoistway.

FIG. 2 is an enlarged view showing a cross section taken along line BB of FIG. 1;

FIG. 3 is a left side view of FIG. 2;

FIG. 4 is an enlarged view showing a cross section taken along line CC of FIG. 1;

FIG. 5 is a diagram corresponding to FIG. 4 for explaining an operation situation in which the braking action of the hoist is released when an abnormality occurs.

FIG. 6 is a vertical sectional view of a lower portion of an elevator hoistway, showing a conventional brake release device of an elevator hoist.

FIG. 7 is an enlarged view of a portion A in FIG. 6;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 hoistway, 3 landing doorway, 5 hoisting machine, 7 braking device, 13 flexible strip, 17 interlocking device, 18 interlocking pulley, 19 interlocking strip, 21 sliding door (double sliding door, single sliding door), 26 actuator , 27 operating pulley, 28 operating strip, 29 rotating transmission device, 33 winding device, 34
Brake release mechanism, 36 coupler.

Claims (3)

[Claims] 1. An interlocking device comprising an interlocking pulley and an interlocking strip formed endlessly and wrapped around the interlocking pulley, the interlocking pulley being pivotally mounted on both sides of an upper edge of a landing entrance of a hoistway, and being separated from each other. A sliding door connected to one longitudinal side of the body to open and close the landing doorway, an operating pulley pivotally mounted on both sides of the upper edge apart from each other, and an endless operating strip wound around the operating pulley; , A winding device driven by a rotary transmission device provided on one of the operation pulleys, and a hoist having one end connected to the winding device and the other end installed in the hoistway. A braking release mechanism consisting of a flexible strip connected to the braking device of the above, and a coupling tool for pressing the main parts of both of the interlocking strip and the actuating strip by manual operation. Connect the two with a connector and pull A brake release device for an elevator hoist that opens and closes a door manually and releases the braking action of the brake device through the operation of the interlocking device, the operating device, the rotation transmission device, the winding device, and the brake release device. 2. A sliding door, one of which is connected to one longitudinal side of the interlocking strip and the other of which is connected to the other side of the interlocking strip and operates in opposite directions to open and close the landing entrance. The brake release device for an elevator hoist according to claim 1, wherein the brake is released. 3. A sliding door which is connected to one longitudinal side of the interlocking strip and operates in one direction to open a landing doorway, and operates in the other direction to close the landing doorway. The brake release device for an elevator hoist according to claim 1, wherein: