JP6793603B2 - Elevator emergency stop activation device - Google Patents

Description

The present invention relates to an elevator emergency stop starter.

As a background technique in this technical field, there is Japanese Patent Application Laid-Open No. 2016-1660559 (Patent Document 1). This publication describes an elevator device having a car that is configured to be able to move up and down along a guide rail provided vertically in the hoistway, and is provided in the car and the car is referred to as the guide rail. A guide device having a guide member that elastically supports the vehicle, a linear encoder capable of reading a pattern formed along the length direction of the guide rail, and a guide device provided on the car side. The linear encoder is held at a reading position at a predetermined distance from the guide rail, and the linear encoder is fixed to the car in the elevating direction and supported in a movable state in the horizontal plane direction intersecting the elevating direction. An elevator device provided with a support mechanism and a driven mechanism provided between the support mechanism and the guide device to drive the linear encoder to follow the displacement of the guide member in the horizontal plane direction. Are listed.

Japanese Unexamined Patent Publication No. 2016-166059

However, the elevator device described in Patent Document 1 has a complicated configuration and is reliable because the emergency stop device is electrically operated after electrically detecting the abnormal descending speed of the car. There was a problem in terms of.

In order to solve the above problems, the present invention provides an emergency stop device provided on the car when the car configured to be able to move up and down along a guide rail provided in the hoistway reaches an abnormal descent speed. An emergency stop starting device to be operated, wherein the emergency stop starting device is a pulley that rotates while in contact with the guide rail, a rotating shaft that is the center of rotation of the pulley, and the emergency stop that corresponds to the rotation of the rotating shaft. Provided is an emergency stop starter including a release control device for controlling activation, and a pull-up link device operated by the release control device and pressed against the guide rail by pulling up the sliding member of the emergency stop.

According to the safety device of the elevator device of the present invention, it can be configured without using a governor rope, and the emergency stop device can be mechanically operated reliably to improve reliability. Issues, configurations, and effects other than those described above will be clarified by the following description of the embodiments.

It is a front view which shows the safety device of the elevator device by one Example of this invention. It is a side view of the safety device of the elevator device shown in FIG. It is a front view of the pull-up link device and the release control device. It is a front view which shows the safety device of the elevator device by another Example of this invention. It is a front view which shows the safety device of the elevator device by still another Example of this invention.

Hereinafter, examples of the present invention will be described with reference to the drawings.

1 and 2 are a front view and a side view showing a safety device for an elevator device according to an embodiment of the present invention.

Although detailed illustration is omitted, the elevator device of this embodiment has a car side 2 that can move up and down along a guide rail 1 fixed in the hoistway, and a main car that connects the car to the drive system. It includes a rope, an encoder 3 used to detect the position and speed of the car, an emergency stop device 4 for safely stopping the car when an abnormal descent speed is reached, and the like. An integrated main body 5 is attached in the vicinity of the guide rail 1 on the car side 2, and an encoder 3 and an emergency stop device 4 are configured close to the integrated main body 5.

A pair of pulleys that are arranged on both sides of the guide rail 1 on the upper part of the integrated main body 5 and that rotate around the rotation shafts 6A and 6B by contact with the guide rail 1 as the car side 2 moves up and down. Encoders 3A and 3B, which are coupled to the same rotating shafts 6A and 6B as 5A and 5B and are used to detect the position and speed of the car, particularly the above-mentioned abnormal descent speed, are configured by a signal processing calculation unit (not shown). There is.

An emergency stop device 4 is configured in the lower portion of the encoders 3A and 3B in the integrated main body 5. This emergency stop device 4 includes a pair of sliding members 7A and 7B as in a generally known configuration, and when the sliding members 7A and 7B are pulled up, they are pressed so as to sandwich the guide rail 1. It is configured to brake the car by its gripping frictional force.

However, there is no governor rope between the encoder 3 and the emergency stop device 4. Instead, the integrated main body 5 is configured with a pull-up link device 8 for pulling up the sliding members 7A and 7B to give a gripping frictional force to the guide rail 1, and the pull-up link device 8 described in detail later. A fulcrum 9 is formed in. Further, although detailed illustration in FIG. 2 is omitted, a release control device 10 for permitting or restricting the pulling operation of the sliding members 7A and 7B by the pull-up link device 8 is configured in the vicinity of the rotating shaft 6A. There is. Here, a device including a shaft rotation shaft 6A, 6B, pulleys 5A, 5B, encoders 3A, 3B, pull-up link device 8, release control device 10, and operating the emergency stop device 4 is referred to as an emergency stop starter. ..

FIG. 3 is a front view of the pull-up link device 8 and the release control device 10. The pull-up link device 8 in this embodiment is connected to an operating body 11 that rotates about a fulcrum 9 and is connected to one end of the operating body 11 so as to drive a pair of sliding members 7A and 7B. It is configured to include a sliding material connecting rod 12, a counterweight 13 connected to the other end of the actuator 11, a roller 14 rotatably attached to the lower portion of the counterweight 13, and the like.

Further, the release control device 10 described above includes a hook 15 that regulates the clockwise rotation of the operating body 11 around the fulcrum 9 by a balance weight 13 so that the rotation can be released, and a rotation shaft 16 that rotatably supports the hook 15. A ratchet disk 18 which is attached so as to idle with respect to the rotation shaft 6A of the pulley 5A and has a plurality of convex portions 17 discretely formed on the outer circumference, and the rotation of the rotation shaft 6A is the encoder 3A. , 3B and the speed adjustment spring 19 whose spring force is adjusted so that the collision part moves by the centrifugal force when the rotation is such that the abnormal descent speed is detected by the signal processing calculation unit, and the rotation shaft 6A has the abnormal descent speed. When the rotation speed is reached, the collision portion 20 that moves by centrifugal force and engages between the plurality of convex portions 17 to connect the rotation shaft 6A and the ratchet disk 18 and the outer peripheral portion of the ratchet disk 18 It is provided and has a release protrusion 21 or the like that causes the hook 15 to rotate in the clockwise release direction due to the rotation of the ratchet disk 18 when connected to the rotation shaft 6A.

The speed adjusting spring 19 has a pair of configurations arranged dispersedly at positions avoiding the rotation shaft 6A, and has a configuration in which a collision portion 20 is coupled between the free end sides on the right side thereof.

In the pull-up link device 8 described above, the length of the arm from the fulcrum 9 in the operating body 11 to the connecting portion of the sliding material connecting rod 12 is shorter than the length of the arm from the fulcrum 9 to the connecting portion of the balance weight 13. Has been done. According to the principle of leverage, a clockwise force acts on the operating body 11 by the counterweight 13 about the fulcrum 9.

However, since the collision portion 20 is not engaged with the convex portion 17 of the ratchet disk 18 in the steady state, the rotating shaft 6A and the ratchet disk 18 are not connected, and the ratchet disk 18 does not rotate together with the rotating shaft 6A. It has become. Therefore, the hook 15 is prevented from moving downward by the position holding spring (not shown) at its free end, and the clockwise rotation of the operating body 11 is prevented, and the state shown by the solid line is shown. It is held.

On the other hand, when it is detected by a signal processing calculation unit (not shown) that the abnormal descending speed of the car is reached, the collision portion 20 of the speed adjusting spring 19 that has been rotating in synchronization with the pulley 5A moves to the right side due to centrifugal force. After moving, the rotation shaft 6A and the ratchet disk 18 are connected. Therefore, the ratchet disk 18 rotates in the direction of the arrow. Along with this rotation, the release protrusion 21 provided on the outer peripheral portion of the ratchet disk 18 collides with the hook 15, and the free end side of the hook 15 is rotated clockwise around the rotation shaft 16.

Therefore, the hook 15 is in the state shown by the dotted line, and there is nothing to prevent the balance weight 13 from moving downward. As a result, the operating body 11 of the pull-up link device 8 is rotated clockwise by the counterweight 13 about the fulcrum 9 as shown by the dotted line. By the operation of the pull-up link device 8, the sliding member connecting rod 12 is pulled up, and the sliding members 7A and 7B connected to the lower end thereof are pulled up to grip the guide rail 1, and the car is gripped by the gripping frictional force. Braking.

The pull-up link device 8 and the release control device 10 described above can adopt various configurations without being limited to the illustrated configuration, but the encoders 3A, 3B and the pulleys 5A, 5B are placed on both sides of the guide rail 1 so as to sandwich the guide rail 1. The configuration is simplified so that the encoder 3 and the emergency stop device 4 can be arranged close to each other without using a governor rope. Therefore, the configuration between the encoder 3 and the emergency stop device 4 can be extremely simple. In addition, the governor rope is not required, and it can be used as a safety device for an elevator device compatible with an electronic safety system.

Moreover, the pull-up link device 8 in which the sliding members 7A and 7B of the emergency stop device 4 are connected to one end, and the steady holding state of the pull-up link device 8 by the hook 15 when the abnormal descending speed of the car is detected are released. Since the release control device 10 is provided, the sliding members 7A and 7B can be mechanically driven to perform a reliable operation.

As described above, since the pull-up link device 8 has a fulcrum 9 that serves as a fulcrum of the principle of leverage, the sliding members 7A and 7B can be pulled up to easily obtain a braking force with respect to the guide rail 1. ..

FIG. 4 is a front view showing a safety device for an elevator device according to another embodiment of the present invention.

In the previous embodiment, the pulleys 5A, 5B and the encoders 3A, 3B are arranged on both sides of the guide rail 1, and the emergency stop device 4 is arranged close to the lower portions of the pulleys 5A, 5B and the encoders 3A, 3B. In this embodiment, the emergency stop device 4 is arranged close to the upper portions of the pulleys 5A and 5B and the encoders 3A and 3B.

Even with this embodiment, almost the same effect as that of the previous embodiment can be obtained.

FIG. 5 is a front view showing a safety device for an elevator device according to still another embodiment of the present invention.

In this embodiment, another guide rail 22 is arranged in the vicinity of the guide rail 1, the emergency stop device 4 is arranged so as to sandwich the guide rail 1, and the pulleys 5A and 5B are arranged so as to sandwich the other guide rail 22. And encoders 3A and 3B are arranged. Even if the emergency stop device 4 and the encoders 3A and 3B are arranged side by side in this way, almost the same effect as that of the previous embodiment can be obtained.

As described above, the present invention has a pair of pulleys 5A and 5B that rotate around the rotation shafts 6A and 6B while contacting the guide rail 1 on both sides of the guide rail 1, and an emergency stop device that does not have a governor rope. A pair of encoders 3A and 3B, which are arranged in the vicinity of 4 and rotate around the respective rotation shafts 6A and 6B, are provided, and are released when the abnormal descending speed of the car is reached, and both sliding members 7A, A pull-up link device 8 for mechanically driving the 7B to the grip side was provided.

According to such a configuration, the configuration is simplified so that the encoder 3 and the emergency stop device 4 can be arranged in close proximity without using a governor rope, and the mechanical pull-up link device 8 ensures operation. Therefore, it can be a safety device with improved reliability. In addition, the governor rope is not required, and it can be used as a safety device for an elevator device compatible with an electronic safety system.

Further, in the present invention, in addition to the above-described configuration, the emergency stop device 4 and both encoders 3A and 3B are arranged in a vertical relationship along the axial direction of the guide rail 1.

According to such a configuration, the emergency stop device 4 and the encoders 3A and 3B can be arranged close to each other in the vertical direction, and a simple configuration can be obtained.

Further, in the present invention, in addition to the above-described configuration, another guide rail 22 is juxtaposed close to the guide rail 1, an emergency stop device 4 is arranged on one guide rail 1 side, and the other guide rail 22 side. Encoders 3A and 3B and pulleys 5A and 5B were arranged in the air.

According to such a configuration, the emergency stop device 4 and the encoders 3A and 3B can be arranged close to each other in the lateral direction, and a simple configuration can be obtained.

Further, in addition to the above-described configuration, in the present invention, the pull-up link device 8 includes an operating body 11 having a fulcrum and a sliding material connecting rod 12 connected to both sliding materials 7A and 7B on one end side of the operating body 11. And the counterweight 13 which is connected to the other end side of the operating body 11 and is rotated about the fulcrum with respect to the operating body 11 so as to move to the gripping side of both sliding members 7A and 7B. A hook 15 for preventing the rotation of the operating body 11 from being released and a hook 15 for releasing the hook 15 are provided.

According to such a configuration, the sliding members 7A and 7B can be mechanically driven by the pull-up link device 8 without interposing a governor rope to perform reliable operation.

The present invention is not limited to the above-described embodiment, and includes various modifications. For example, the above-described examples have been described in detail in order to explain the present invention in an easy-to-understand manner, and are not necessarily limited to those having all the described configurations.

1 Guide rail 3A, 3B Encoder 4 Emergency stop device 5A, 5B Pulley 7A, 7B Sliding material 8 Pulling link device 11 Actuating body 12 Sliding material connecting rod 13 Balance weight 15 Hook

Claims (4)

It is an emergency stop starter that operates the emergency stop device installed in the car when the car that is configured to be able to move up and down along the guide rail provided in the hoistway reaches an abnormal descent speed.
The emergency stop starting device is a pulley that rotates while in contact with the guide rail.
The rotating shaft, which is the center of rotation of the pulley,
A release control device that controls the activation of the emergency stop device in response to the rotation of the rotation shaft.
It has a pull-up link device, which is operated by the release control device and is pressed against the guide rail by pulling up the sliding material of the emergency stop device .
The pull-up link device is connected to an operating body having a fulcrum, a sliding material connecting rod connected to the sliding material on one end side of the operating body, and connected to the other end side of the operating body, and said. It has a counterweight that rotates around the fulcrum with respect to the operating body so as to move to the gripping side of the sliding material.
The release control device includes a hook that restricts the clockwise rotation of the operating body so that it can be released, and a plurality of convex portions that are attached so as to idle with respect to the rotation axis and are discretely formed on the outer circumference. A ratchet disk having the above, a speed adjusting spring that prevents the collision portion from colliding with the convex portion until the rotation of the rotating shaft becomes a rotating state due to an abnormal descending speed, and a rotating state in which the rotation of the rotating shaft is caused by an abnormal descending speed In the case of, the collision portion that moves and engages between the plurality of convex portions to connect the rotating shaft and the ratchet disk, and the collision portion provided on the outer peripheral portion of the ratchet disk, and It has a release protrusion that rotates the hook by the rotation of the ratchet disk when connected to the rotation shaft and releases the clockwise rotation of the operating body.
The speed adjusting spring has a pair of configurations dispersedly arranged at positions avoiding the rotation axis, and the collision portion is coupled between the free end sides of the pair.
Emergency stop activation device. The emergency stop activation device is attached to a part of the car.
The emergency stop activation device according to claim 1, wherein the emergency stop device is arranged in the vicinity of the emergency stop device. The pulley is plural,
The emergency stop starting device according to claim 2, wherein the guide rail is arranged on both sides of the guide rail so as to sandwich the guide rail. The emergency stop device activation device is
The emergency stop starting device according to claim 3, wherein the emergency stop device and the guide rail are arranged in a vertical relationship along the axial direction.

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