KR100651006B1 - Brake-releasing device for elevator hoist and method of operating the same - Google Patents

Abstract

The brake release device of the present invention has an outer tube 11 and an inner wire 12 extending between the brake 102a of the hoist 102 and the storage box 20 provided near the landing 108. The operation lever 40 connected to the inner wire 12 is rotatably attached to the frame 30 in the storage box 20. The outer tube 11 is connected to the frame 30 through the outer tube fixing shaft 35. The inner end portion 12a of the inner wire 12 is connected to the operation lever 40 via the inner wire connecting shaft 46.

Elevator hoist, brake opening device

Description

Brake opening device of elevator hoisting machine and its operation method {BRAKE-RELEASING DEVICE FOR ELEVATOR HOIST AND METHOD OF OPERATING THE SAME}

The present invention relates to a brake opening device of an elevator hoist used to open a brake of a hoist when the elevator hoister cannot be driven.

When an earthquake, a power failure, or the like occurs during operation of the elevator, or the elevator breaks down and operation of the elevator hoisting machine (also referred to as a hoisting machine) becomes impossible, the car may be stopped between floors. In this case, a rescue operation is performed in which the brake of the hoisting machine is manually opened to raise and lower the car to the landing.

Various apparatuses are proposed as an apparatus for manually opening the brake of a hoist. For example, during the rescue operation, the brake wire is pulled by pulling the end of the brake wire over the landing floor and pressing the foot-lever installed on the landing floor. The rescue operation operation mechanism which opens is known (for example, refer patent document 1).

In addition, a brake opening wire provided between the hoist of the elevator and the manual operation unit, a pinion fixed to the rotary shaft of the hoist, a rack engaged with the pinion, and an engaging for displacing the rack into an engaged position. The apparatus provided with the wire and the wire for manual drive which reciprocates the said rack in the longitudinal direction is also known (for example, refer patent document 2). In addition, a brake release lever for operating these wires, a manual drive lever, and an engagement lever are fixed to an indicator box of a landing.

Moreover, the braking force setting device of the hoisting machine which is provided in the floor of the boarding point vicinity of the lower part of a hoistway at the time of rescue operation, and has the lever mechanism which pulls two sets of brake wires provided in the hoisting machine independently, for example (patent document 3) Reference).

In Patent Literatures 1 to 3, the outer tube of the brake wire of the hoisting machine is fixed to a structure such as a frame, and the tip of the inner wire is connected to the lever, and the inner wire is rotated by the lever. Is towed against the outer tube. In addition, a male screw is formed outside the end of the outer tube, and the outer tube is fixed to the structure by a nut.

[Patent Document 1] Japanese Unexamined Patent Publication No. 2001-233563

[Patent Document 2] Japanese Unexamined Patent Publication No. 2001-122547

[Patent Document 3] Japanese Unexamined Patent Publication No. 2001-294386

In the above-mentioned prior art, when the brake opening device is provided near the landing floor, if the car is near the landing, the terminal of the brake wire provided in the landing may not be pulled to the landing side. In addition, it takes time or effort to pull the terminal of the brake wire from the hoistway, and there is a fear that the rescue may be delayed.

In addition, in order to pull the terminal of the brake wire to the landing floor surface, it is necessary to loosen the brake wire in the hoistway, but in this case, the loosened wire may be entangled in the car. Further, by pulling the brake wire toward the landing side, there is a risk that a part of the brake wire may jump out to the car side or add tension, thereby causing the wire to move and become entangled in the guided car.

In general, in order to open the brake of the hoisting machine, it may be necessary to apply a force applied from several hundred N to 1 kN or more to the operation wire over a stroke of several tens of millimeters. Do.

Therefore, when storing an operation lever in a boarding point indicator box etc., it is necessary to enlarge the said box and there exists a possibility that designability may deteriorate.

In addition, since the lever for pulling the inner wire of the brake wire rotates around its support shaft, the pulling direction of the inner wire and the fixing direction of the outer tube are shifted with the pulling, and the friction force between them increases, which makes smooth operation impossible. There is a risk that the safety of the rescue operation may be lowered due to breakage or damage to the inner wire.

In order to reduce the frictional force between the inner wire and the outer tube, it is necessary to reduce the angle shift, and for that purpose, the operating angle of the lever must be reduced.

By the way, in order to obtain the force and the stroke required for the traction at a small operating angle, it is effective to increase the distance between the position at which the inner wire is towed and the center of rotation of the lever, but the entire lever must be lengthened. As a result, since the brake release device must be made large, there is a problem that the storage space increases or the designability deteriorates.

It is also effective to configure the brake side mechanism so that the brake can be opened by a short stroke. However, since the traction force is increased, a thick wire is required or the mechanism may be enlarged. In addition, when the stroke is shortened to increase the traction force, it is difficult to make delicate adjustment of the traction force, which may make stable rescue operation difficult.

The present invention has been devised in view of this point, and it is not necessary to loosen the brake wire in the hoistway, the brake wire does not protrude into the hoistway during rescue operation, and the brake of the elevator hoisting machine does not need to install a large operation lever. An object of the present invention is to provide an opening device and a method of operating the same.

A brake opening device for guiding a car by opening a brake of an elevator hoist disposed in a hoist from a hoist with a hoist door, comprising: an accommodating part installed near the hoist and containing a frame, and between the brake and the accommodating part of the hoist. An outer tube extending in the outer tube, an inner wire extending in the outer tube, and an operating lever rotatably installed in a frame in the receiving portion and connected to the inner wire, wherein the outer tube includes an outer tube pivot support means. It is connected to the frame through the inner wire is the brake opening device of the elevator hoisting machine, characterized in that the front end thereof is connected to the operation lever through the inner wire rotation support means.

According to the present invention, the outer tube pivot support means comprises a first shaft-shaped member for passing the outer tube in a direction orthogonal to the shaft center, and the inner wire pivot support means allows the inner wire to pass in a direction orthogonal to the shaft center. It is a brake opening apparatus of the elevator hoisting machine which consists of a 2nd axial member.

According to the present invention, when the operation lever is rotated to pull the inner wire, the outer tube fixing shaft rotates freely and always faces the direction in which the inner wire is pulled. Therefore, it is possible to prevent the friction between the inner surface of the end of the outer tube and the inner wire to be strong, the operation is smooth, and the reliability is improved. In addition, since the operation angle of the operation lever can be increased, a large stroke can be pulled without using a grand lever, and the apparatus can be miniaturized.

This invention is the brake opening device of the elevator hoisting machine which connected the extension additional lever to the operation lever.

The present invention is a brake opening device of an elevator hoisting machine, wherein an additional lever removed from the operation lever is housed in the receiving portion.

According to the present invention, it is possible to easily extend the entire lever by combining the operation lever and the additional lever, and it is not necessary to provide the long operation lever, so that a large storage space for storing the operation lever is unnecessary.

The present invention is characterized in that the elevator hoisting machine is characterized in that the tip of the inner wire is not connected to the lever when the operation lever is in the accommodation portion, and the tip of the inner wire is connected to the operation lever when the operation lever comes out from the accommodation portion. Brake opening device.

According to the present invention, it is possible to prevent the inner wire from being towed accidentally, thereby improving safety and operability.

The present invention is a brake opening device of an elevator hoist, characterized in that the receiving portion is installed in a position that the operator can operate the operation lever while opening the landing door to watch the car in the hoistway.

The present invention provides a brake opening device for guiding a car by opening a brake of an elevator hoist disposed in a hoist from a hoist with a hoist door, which is provided near the hoist and includes a frame, and a brake and the hoist of the hoist. An outer tube extending, an inner wire extending in the outer tube, and a control lever rotatably mounted to the frame in the receiving portion and connected to the inner wire, wherein the outer tube is connected to the frame through the outer tube pivot support means. The inner wire has a tip end portion connected to an operation lever via an inner wire pivot support means, the method of operating a brake release device of an elevator hoisting machine comprising the steps of opening a landing door of a landing and a landing from a landing. Win through the door A method of operating a brake opening device for an elevator hoisting machine comprising the step of guiding a car while operating a control lever while opening a brake while watching a car in a roadway.

1 is a schematic view showing an embodiment of a brake opening device of an elevator hoist according to the present invention.

2 is an external view of a brake opening device as seen from the landing side.

3 (a) to 3 (d) are explanatory diagrams showing the configuration of the brake release device in detail.

Fig.4 (a)-(c) is explanatory drawing which shows the state which connects the lever of a brake release device.

5 (a) to 5 (c) are explanatory diagrams showing the operation of the lever of the brake release device;

6 is a schematic view showing an example of the configuration of an elevator.

EMBODIMENT OF THE INVENTION Hereinafter, with reference to drawings, one Example of the brake opening apparatus of the elevator traction machine by this invention is demonstrated.

First, a normal elevator will be described with reference to FIG. 6. 6 is a schematic view showing an example of an elevator.

The elevator 100 is provided with the car 104 arrange | positioned so that the movement of the up-down direction in the hoistway 101 of a building, and the elevator hoisting machine (also called the hoisting machine) 102 arrange | positioned above the hoistway 101 is possible. One side of the rope 103 suspended from the hoisting machine 102 is wound around a driven pulley 105 installed below the car 104, and an end of the rope 103 is near the upper end of the hoistway 101. Supported by

On the other hand, the other side of the rope 103 suspended from the hoisting machine 102 is wound around the pulley 107 installed on the counterweight 106, and the end of the rope 103 is supported near the upper end of the hoistway 101. It is.

In addition, the landing 108 of each floor has a floor 109, a wall 110, and a landing door 111.

Next, the brake release device of an elevator hoisting machine is demonstrated with reference to FIG. In FIG. 1, the left side in the drawing is the hoistway 101, and the right side is the hoistway 108.

As shown in FIG. 1, the hoist 102 has an emergency brake 102a. The brake opening device of the elevator hoisting machine according to the present invention opens the brake 102a of the hoisting machine 102 from the landing 108 side.

That is, the brake opening device is installed on the wall 110 near the landing 108 and includes a storage box (receiving portion) 20 in which the frame 30 is incorporated, and the brake 102a and the storage box of the hoisting machine 102 ( It rotates to the flexible outer tube 11 extended between 20, the flexible inner wire 12 extending in the outer tube 11, and the frame 30 in the storage box 20. As shown in FIG. It is provided so that the operation lever 40 connected to the inner wire 12 at the same time possible.

Among these, the brake wire 10 is comprised by the outer tube 11 and the inner wire 12, One end 10a of the brake wire 10 is connected to the brake 102a, and The other end 10b is guided to the frame 30 side of the storage box 20.

The brake 102a of the hoist 102 is opened by pulling the inner wire 12 of the brake wire 10 by the operation lever 40. Moreover, the storage box 20 is provided in the position where the worker can operate the operation lever 40, while the worker opens the landing door 111, and looks at the car 104 in the landing 101 of the landing hall 108. .

Next, the internal structure of the storage box (receiving part) 20 is demonstrated. The frame 30 is fixed inside the storage box 20, and the operation lever 40 is provided with respect to this frame 30 so that rotation is possible. The outer tube 11 has an end fitting 11a, which is rotatably supported on the frame 30 via an outer tube fixing shaft (first axial shaped member) 35. , The inner wire 12 has an end fitting 12a, which is rotatably supported via an inner wire connecting shaft (second axial member) 46 in the middle of the lever 40. do. Moreover, the cover 21 is attached to the storage box 20, and the inside is not seen from the boarding point 108. As shown in FIG.

FIG. 2: is an external view which shows the state which looked at the said storage box 20 from the boarding point side. An indicator panel 112 having a call button (not shown) or the like is provided on the wall 110 of the landing 108. The storage box 20 with the cover 21 is provided in the vicinity of the indicator panel 112, and a key 22 is provided in the cover 21.

Next, the internal structure of the storage box 20 is further demonstrated by FIG.3 (a)-(d). (A)-(d) is a figure which shows the internal structure of the storage box 20, FIG.3 (a) is a side view, FIG.3 (b) is a front view, and FIG.3 (c) ) Is an enlarged view of FIG. 3B, and FIG. 3D is a view showing an outer tube fixing shaft.

The frame 30 includes a pair of frame plates 31 having the same shape, a frame block 32 sandwiched between the pair of frame plates 31, and a bolt 33 fixing the pair of frame plates 31. It consists of). In addition, the frame block 32 is fixed to the fixing plate 113 provided in the wall 110 by four bolts 34.

Inside the pair of frame plates 31, an operation lever 40 is pivotably supported around the lever rotation shaft 41 attached to each frame plate 31. The operation lever 40 includes a pair of lever plates 42 having the same shape, a spacer 43 sandwiched between the pair of lever plates 42, and a bolt 44 for fixing the pair of lever plates 42. It consists of). In addition, a hole 42a is provided at the tip end of the lever plate 42. The refill pipe (additional lever) 45 can be connected to the operation lever 40 using the hole 42a, and the refill pipe 45 is housed in the storage box 20.

A screw 13 is formed outside the end fitting 11a of the outer tube 11. The end fitting 11a is inserted into the outer tube by inserting two nuts 14 coupled to the screw 13 with the end fitting 11a inserted into the hole provided perpendicular to the shaft center of the outer tube fixing shaft 35. It is fixed to the fixed shaft 35. The outer tube fixing shaft 35 is rotatably supported with respect to the frame plate 31. The outer tube fixing shaft 35 is provided with two planar processing surfaces 35a at a portion where the nut 14 abuts, and lock rings 35b at both ends of the outer tube fixing shaft 35. ) Is attached.

On the other hand, the screw 15 is formed in the front-end | tip part of the end fitting 12a of the inner side wire 12, and the end fitting 12a is inserted through the hole provided orthogonally to the shaft center of the inner side wire connection shaft 46, A nut 16 is attached to the distal end of the screw 15. The inner wire connecting shaft 46 is rotatably supported by the two lever plates 42. The planar working surface 46a is provided in the part which the nut 16 abuts, and the locking ring 46b is attached to the both ends of the inner wire connecting shaft 46. As shown in FIG. In addition, in the state shown in FIG. 3, the process surface 46a and the nut 16 of the inner side wire connecting shaft 46 do not contact, and are provided with a space.

Next, the operation of the present embodiment thus constructed will be described below with reference to Figs. 4A to 4C and Figs. 5A to 5C.

When the hoist of the elevator cannot be driven due to any abnormality or failure, and the car 104 stops between floors while the brake 102a of the hoist 102 is operated, the car 104 is operated as follows. The rescue operation of the passenger inside is executed.

First, the platform 108 door 111 of the floor close to the installation position of the hoisting machine 102 is opened slightly by the worker, and the inside of the hoistway 101 is visible.

The subsequent procedure will be described below with reference to FIGS. 4A to 4C. 4A to 4C are side views showing the inside of the storage box 20 in perspective. 4A shows a state in which the cover 21 of the storage box 20 is closed, and the reference symbol G in the drawing indicates the machining surface 46a of the inner wire connecting shaft 46 and the nut ( 16) is the allowable length.

First, in FIG. 4A, the key 22 of the storage box 20 is opened to open the cover 21, and the operation lever 40 is tilted forward. Next, the front end of the operation lever 40 is projected from the storage box 20 to bring the machining surface 46a and the nut 16 into contact with each other (FIG. 4B). At this time, the clearance G disappears, but no tension is applied to the inner wire 12.

Next, the replenishment pipe 45 is connected by the bolt 47 using the hole 42a at the tip of the protruding operation lever 40 (FIG. 4C).

An operation of pulling the inner wire 12 will be described below with reference to FIGS. 5A to 5C. 5A to 5C are schematic views showing the operation of the operation lever 40 to which the replenishment pipe 45 is connected.

The worker grasps the end of the replenishment pipe 45 and pulls it down while checking the inside of the hoistway 101 from the gap of the hoistway door 111. In this case, the relative distance between the outer tube fixing shaft 35 and the inner wire connecting shaft 46 increases, so that the inner wire 12 is pulled with respect to the outer tube 11, and from FIG. 5A to FIG. The state shown in (b) is obtained. When the operation lever 40 is lowered further, it will be in the state of FIG.

At this time, the tip of the inner wire 12 moves in an arc shape with the inclination of the operating lever 40, but the outer tube fixing shaft 35 is rotatable with respect to the frame 30. The end fitting 11a of the outer tube 11 always faces in the direction in which the inner wire 12 is towed. In addition, since the inner wire connecting shaft 46 is also rotatably supported with respect to the operation lever 40, no bending load is applied to the inner wire 12 even when the operation lever 40 is rotated. .

When the inner wire 12 is towed, the brake 102a of the hoist 102 is opened, and the heavier one of the car 104 and the counterweight 106 descends. In addition, when the weight of the car 104 and the counterweight 106 is balanced, the weight is increased or decreased so as not to be balanced by the method which is not explained in detail. Do not apply a load.

In this way, the operator intermittently pulls down the operation lever 40 while looking at the car 104 in the hoistway 101. By operation, the speed of the car 104 is appropriately adjusted while opening the brake 102a to guide the car 104 to the front of the landing 108. After that, the doors of the landing door 111 and the car 104 are opened to rescue the passengers.

As described above, according to the present embodiment, the following effects are obtained.

The supplementary pipe 45 is connected to the operation lever 40 in the storage box 20 installed on the wall 108 of the landing 108, and the brake 102a of the hoist 102 is pulled down only by pulling down the supplementary pipe 45. ) Can be opened. For this reason, it is not necessary to pull a brake wire to the boarding point bottom, etc., Even if a car is near a boarding point bottom, it can work safely without a problem. In addition, it is not necessary to loosen the brake wire in the hoistway, and safety is improved because the brake wire does not protrude into the hoistway during the rescue operation.

In addition, since the outer tube fixing shaft 35 rotates with respect to the frame 30 in accordance with the rotation of the operation lever 40, the inner tube 12 always faces in the direction in which the inner wire 12 is pulled, Since the inner wire 12 does not rub strongly, smooth operation, damage to the inner wire 12 can be prevented, and reliability can be ensured.

In addition, the operation angle of the operation lever 40 can be increased, so that a large stroke can be pulled without using a grand lever, and as a result, the apparatus can be miniaturized. In addition, since the subtle traction can be adjusted, the operability is excellent.

Since the inner wire connecting shaft 46 also rotates with respect to the frame 30, even if the operation angle of the operation lever 40 increases, an excessive bending load is not applied to the tip of the inner wire 12, thereby enabling smooth operation.

Moreover, the operation lever 40 at the time of providing a clearance to the inner wire 12, and connecting the operation lever 40 angle and the supplemental pipe 45 to the operation lever 40 when it is accommodated in the storage box 20 is carried out. Since a gap is provided at the angle), it is possible to prevent the inner wire 12 from being accidentally pulled at the time of connecting the refill pipe 45, thereby ensuring safety and operability. Moreover, since the operation lever 40 and the supplemental pipe 45 can be accommodated using the space in the storage box 20 sufficiently, the small storage space in the storage box 20 can be used effectively, and the storage box 20 ) Can be miniaturized.

In addition, in the said embodiment, although the example which connected one supplementary pipe 45 to the operation lever 40 was shown, it is not limited to this, The operation lever 40 is connected by connecting two or more supplementary pipes 45 to it. It is also possible to appropriately reduce the force required to operate. The lever may also be extended by a folding link mechanism or an elastic lever. Alternatively, the worker may have an extension lever.

In addition, although the outer tube fixing shaft 35 and the inner wire connecting shaft 46 were supported in direct contact with the frame plate 31 or the lever plate 42 in the above embodiment, the friction force was further increased by using a lubricant or a bearing. Reducing it enables more smooth operation.

In addition, although the hoist 102 was installed in the upper part of the hoistway 101 with reference to FIG. 6, the hoist 102 is a pit of the hoistway 101, another part of the hoistway 101, and a machine room. Even if installed inside, the same effect can be obtained.

As described above, according to the present invention, since the brake wire does not need to be pulled to the landing during the rescue operation, the rescue operation can be performed quickly and safely, and the rescue operation can be performed without problems even when the car is near the landing. In addition, since the brake wire does not need to be loosened in the hoistway, and the brake wire does not protrude into the hoistway during the rescue operation, it is possible to provide a high safety brake opening device for an elevator hoisting machine. Moreover, since the rotation angle of an operation lever can be enlarged, sufficient stroke can be pulled out without lengthening an operation lever, and operability improves. Moreover, the accommodating part which accommodates an operation lever can be miniaturized, and there is no possibility that designability may deteriorate.

Claims (7)

In a brake opening device for inducing a car by opening a brake of an elevator hoist disposed in a hoistway from a hoistway having a hoistway door, An accommodating part installed in the vicinity of the platform and including a frame; An outer tube extending between the brake of the elevator hoist and the receiving portion; An inner wire extending in the outer tube, It is provided rotatably in the said frame in the said accommodating part, and is provided with the operation lever connected to the said inner wire, The outer tube is connected to the frame via an outer tube pivot support means, One end of the inner wire is connected to the operation lever via an inner wire pivot support means, and the other end is connected to the brake of the elevator hoist. The method of claim 1, The outer tube pivot support means is made of a first shaft-shaped member through which the outer tube passes in a direction orthogonal to the shaft center, The said inner wire pivot support means consists of the 2nd shaft-shaped member which the said inner wire passes in the direction orthogonal to an axis center, The brake opening apparatus of the elevator hoisting machine characterized by the above-mentioned. The method of claim 1, An extension lever connected to the operation lever is connected to the brake hoist of the elevator hoisting machine. The method of claim 3, wherein The additional lever removed from the operation lever is accommodated in the accommodation portion. The method of claim 1, When the operation lever is in the accommodation portion, the one end of the inner wire is not connected to the operation lever, and when the operation lever comes out from the accommodation portion, the one end of the inner wire is connected to the operation lever. Brake opening device of the elevator hoisting machine, characterized in that connected. The method of claim 1, And the receiving portion is installed at a position where a worker can operate the operation lever while opening the landing door and watching the car in the landing. A brake opening device for guiding a car by opening a brake of an elevator hoist disposed in a hoist from a hoist with a hoist door, the brake part being provided near the hoist and containing a frame, and between the brake of the hoist and the hoist. An outer tube extending, an inner wire extending in the outer tube, and an operation lever rotatably installed on the frame in the receiving portion and connected to the inner wire, wherein the outer tube includes an outer tube pivot support means. Operation of the brake opening device of the elevator hoisting machine, which is connected to the frame via the inner wire, and one end thereof is connected to the operation lever via an inner wire pivot support means, and the other end thereof is connected to the brake of the elevator hoisting machine. On the way , Opening the landing door of the landing hall; And a step of guiding the car while opening the brake by operating the operation lever while watching the car in the hoistway from the landing via the landing door.

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