JP2005280956A - Rescue device for confined passenger in elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rescue device for confined passengers from an elevator capable of reducing the time and labor till the rescue of passengers who are confined in an elevator car and performing a quick rescue activity. <P>SOLUTION: The rescue device for the confined passengers from elevator is equipped with a rope attached to the car and moving in the vertical direction interlocking with the car elevating and sinking motions, a holding part fixed to the rope and slipping off from the rope when a force is applied to the rope acting upward, an assist weight installed in the holding part, and a movement stopping means to stop the holding part and assist weight moving downward. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a rescue device used when an elevator passenger is trapped in a car.

  A conventional chain block suspension jig used to suspend an elevator confinement rescue device on a rope or the like includes a receiving plate having a holding portion for holding the rope side by holding the rope so as to be wound from the side, and the receiving plate. A holding arm having one end pivotably attached to the pivot shaft at the upper end of the plate and having a pressing portion that presses the side of the rope facing the holding portion, and a chain block slidably attached to the other end of the holding arm And a spring that connects the backing plate and the pressing arm to provide a force for gripping the rope, and a gripping force that is applied to the side of the rope. In order to release the movement, there is one to which a release lever that rotates the holding plate around the pivot shaft is attached (for example, see Patent Document 1).

JP 2000-38289 A

  When an elevator car becomes inoperable due to a power failure or other reason and passengers are trapped in the car, the car is usually moved to the nearest landing by manually winding the hoist or opening the brake device. Rescuing passengers from the landing. However, when the passenger is trapped in an elevator device that uses a hoisting machine that cannot be manually wound due to its structure, the weight of the entire car including the passenger at that time is balanced with the weight of the entire counterweight device. Even if the brake device is released, the car does not move, and the car cannot be moved to the nearest landing to rescue the passenger. In such a case, an operator enters the pit of the hoistway and attaches a rescue weight to one side of the balance chain or the rope for the governor so that the weight between the car side and the balance weight side can be increased. The car is moved by forcing an imbalance. FIG. 10 is a view showing that an auxiliary weight for rescue is attached to the balance chain to create a weight imbalance state. Moreover, when attaching the rescue auxiliary weight to the balancing rope and the governor rope, the cage was moved using a chain block hanging jig described in Patent Document 1 above. . However, in such a conventional confinement / rescue device, the distance that the car can be moved by a single mounting operation of the confinement / rescue device is the moving distance of the auxiliary weight, that is, the return of the counterweight from the attachment position of the auxiliary weight. If the distance from the stop position of the car to the nearest landing is relatively long, the confinement and rescue device must be replaced many times. It required labor and made rescue work difficult quickly. In particular, when a worm gear is used in the hoisting machine, a large load is required until the rotation starts from the viewpoint of gear efficiency, and thus a great amount of time and labor are required before rescue.

  The present invention has been made to solve the above-described problems, and its purpose is to reduce the time and labor required to rescue a passenger when the passenger is confined in an elevator car. It is to provide an elevator confinement rescue device.

  The elevator confinement and rescue device according to the present invention is attached to an elevator car, and is a rope that moves up and down in conjunction with the raising and lowering of the car, and is fixed to the rope, and an upward force is applied to the rope. In this case, there are provided a holding part that comes off the rope, an auxiliary weight provided in the holding part, and a movement stopping means for stopping the holding part and the auxiliary weight from moving downward.

  The present invention relates to a rope that is attached to an elevator car and moves up and down in conjunction with the raising and lowering of the car, and a holding part that is fixed to the rope and comes off the rope when an upward force is applied to the rope. And when the passenger is confined in the elevator car, the auxiliary weight provided in the holding portion and the movement stopping means for stopping the holding portion and the downward movement of the auxiliary weight are provided. The time and labor to rescue the passengers can be reduced.

Embodiment 1 FIG.
FIG. 1 is an overall front view of the elevator apparatus. In the figure, a car 2 and a counterweight 3 that move up and down in the elevator hoistway 1 in opposite directions are suspended by a main rope 4 in a fishing bottle manner. The main rope 4 is wound around the driving sheave 6 and the deflector 7 of the hoisting machine installed in the machine room 5 above the hoistway 1, and the frictional force generated between the driving sheave 6 and the sheave groove of the driving sheave 6. Accordingly, the drive sheave 6 moves in conjunction with the rotation. Here, the counterweight 3 is the same as the total weight of the car 2 when about half of the passengers get on the car 2 in order to reduce the load on the hoisting machine necessary for raising and lowering the car 2. The weight is set so that the total weight of the three is equal. Further, the length of the main rope 4 from the car 2 to the driving sheave 6 and the length of the main rope 4 from the deflector 7 to the counterweight 3 differ depending on the position of the car 2, so The weight and the weight on the counterweight 3 side also vary depending on the position of the car 2. In order to correct the unbalanced state of the car 2 side and the counterweight 3 side of the main rope 4 due to the position of the car 2, the lower ends of the car 2 and the lower part of the counterweight 3 have respective end portions of the counter chain 8 Is fixed and the ratio of the total weight on the side of the car 2 to the total weight on the side of the counterweight 3 is set to be substantially constant when the load weight of the car 2 does not change.

  A governor 9 is installed in the machine room 5 above the elevator hoistway 1 to forcibly stop the lowering of the car 2 when the lowering speed of the car 2 exceeds a predetermined speed. An endless governor rope 12 is wound around the speed governor 9 installed in the machine room 5 above the hoistway 1 and the tension wheel 11 provided in the pit 10 below the hoistway 1. The speed governor rope 12 is always tensioned by the speed governor weight 13 suspended from the tension wheel 11. A part of the governor rope 12 is coupled to the car 2 and moves in conjunction with the raising and lowering of the car 2. The speed governor 9 around which the speed governor rope 12 is wound operates the emergency stop 14 provided at the lower portion of the car 2 when the moving speed of the speed governor rope 12 exceeds a predetermined value. Let the car 2 stop forcibly.

  2 is a front view of the elevator confinement and rescue apparatus according to Embodiment 1 of the present invention, FIG. 3 is a side view thereof, FIG. 4 is a plan view of the main part thereof, FIG. 5 is a front view of the main part thereof, and FIG. It is a figure for demonstrating operation | movement of the elevator confinement rescue apparatus in Embodiment 1 of invention. In the figure, the elevator confinement and rescue device includes a holding portion 15 fixed to the governor rope 12 and an auxiliary attached to the holding portion 15 in order to create an unbalanced state of the weights on the car 2 side and the counterweight 3 side. It is composed of a weight 16. First, the structure of the holding part 15 and the auxiliary weight 16 will be described with reference to FIGS.

  The table 17 having a substantially rectangular parallelepiped shape is provided with guide surfaces 17a and 17b facing downward and obliquely facing each other from the upper surface to the lower surface, and the guide surfaces 17a and 17b have a substantially T-shaped cross section. The presenting rails 18 are provided in the vertical direction so as to face each other. The retainers 19 slidably provided on the rails 18 are arranged so that the vertical surfaces on the side opposite to the rails 18 face each other in parallel, and the perpendicular surfaces facing each other have a semicircular shape. A rope groove 19a is formed in the vertical direction. In addition, auxiliary weight mounting plates 20 are fastened and fixed to both side surfaces of the instrument base 17 by bolts, and attachment holes 20a are formed in the lower portions of the auxiliary weight mounting plates 20 protruding below the instrument base 17, respectively. Has been. On the other hand, the auxiliary weight 16 is provided with a hook-like hooking portion 21 at the upper portion thereof, and at the lower portion thereof is provided with a foot portion 22 composed of a rod-like movement stopping means projecting greatly downward.

Next, in an elevator apparatus that uses a hoisting machine that cannot be manually wound due to its structure, a passenger is trapped due to a power failure or the like, and the weight of the entire car 2 including the passenger at that time is balanced with the weight of the counterweight 3 as a whole. A passenger rescue method using the confinement rescue device will be described with reference to FIGS.
After confirming that the car 2 does not move even if the brake device is released and the total weight on the car 2 side and the total weight on the counterweight 3 side are balanced, the pit 10 of the hoistway 1 The holder 15 is attached to the governor rope 12. First, the gripper 19 is moved along the rail 18 to the lower portion of the instrument base 17, and then the holding portion 15 is lifted up as much as possible so that the governor rope 12 is disposed between the grippers 19. At this time, since the clamp 19 is disposed at the lower part of the instrument base 17, the distance between the vertical surfaces of the clamp 19 on the side opposite to the rail 18 is larger than the width of the governor rope 12. And the governor rope 12 do not come into contact with each other. Next, the table 17 is moved downward while pushing up the clamp 19, and the holding portion 15 is connected to the governor rope so that the governor rope 12 is clamped by the rope 19 a of the clamp 19. 12 is fixed. At this time, since the clamp 19 is urged toward the governor rope 12 by the guide surfaces 17a and 17b of the instrument base 17, the holder 15 can be easily attached to the governor without using bolts or the like. It can be fixed to the rope 12 for use. Next, the auxiliary weights 16 are respectively hooked in the mounting holes 20a provided on both sides of the holding portion 15, and the car 2 is moved by creating an unbalanced state of the weight between the car 2 side and the counterweight 3 side. . When the movement of the car 2 is started, the holding portion 15 and the auxiliary weight 16 move downward until the lower end of the foot portion 22 of the auxiliary weight 16 collides with the bottom surface of the pit 10. The foot 22 below the auxiliary weight 16 prevents the holding portion 15 and the auxiliary weight 16 from coming into contact with the tension wheel 11 and the governor weight 13 when the foot 22 collides with the bottom surface of the pit 10. Its length has been adjusted. When the lower end of the foot part 22 of the auxiliary weight 16 collides with the bottom surface of the pit 10, the fall of the auxiliary weight 16 and the holding part 15 is stopped by the collision, but the speed governor rope 12 continues to move due to inertial force. The clamp 19 holding the speed rope 12 is also guided by the rail 18 and moves downward. Thereafter, the gripper 19 is separated from the governor rope 12 and stops at the lower portion of the instrument base 17, but the governor rope 12 continues to move due to the inertial force even after the pit 10 collides with the foot 22. . That is, the movement of the car 2 continues even after the confinement rescue device is stopped.

  According to the first embodiment of the present invention, the movement of the car 2 is not stopped even after the foot portion 22 of the auxiliary weight 16 collides with the bottom surface of the pit 10 and the dropping of the holding portion 15 and the auxiliary weight 16 stops. Since it continues, the distance which can move the cage | basket | car 2 by one installation work of the confinement rescue apparatus can be lengthened significantly. For this reason, guidance to the nearest landing can be performed quickly, and it becomes possible to significantly reduce the time and labor required to rescue a passenger trapped in the car 2. Usually, the force required to rotate the driving sheave of the hoisting machine that is stopped is greater than the force required to continue the rotation, so once the movement of the car 2 is started, the auxiliary weight The car 2 continues to move for a long time after the 16 is removed. For this reason, the frequency | count of attachment of the holding | maintenance part 15 and the auxiliary | assistant weight 16 can be reduced extremely, and it becomes an effective means especially in the case of the winding machine in which the worm gear with bad gear efficiency is used. In addition, when the car 2 stops without arriving at the nearest landing and needs to be reattached to the confinement rescue device, the auxiliary weight 16 is detachable and only the holding portion 15 is moved up and down. Therefore, it is possible to significantly reduce the time and labor required for attachment.

  In the first embodiment, the case where the hoisting machine is installed in the machine room has been described. However, the same effect can be obtained for a machine room-less elevator in which the hoisting machine is installed on a hoistway wall or the like. Needless to say, there are. Also, if the confinement rescue device can be attached to a rope that moves up and down in conjunction with the raising and lowering of the car 2, the same effects as in the first embodiment can be obtained, so that the car 2 and the lower part of the counterweight 3 are balanced. When a balancing rope is provided in place of the chain 8, the same rescue as in the first embodiment may be performed by attaching a holding portion 15 or the like to the balancing rope. In the first embodiment, the holding portion 15 is described as having a wedge shape. However, the holding portion 15 is applied to the governor rope 12 when a force is applied downward to the governor rope 12. The configuration is not limited as long as it has a configuration that is fixed and can be removed from the governor rope 12 when a force is applied downward to the governor rope 12.

Embodiment 2. FIG.
FIG. 7 is a diagram for explaining the operation of the elevator confinement / rescue device according to Embodiment 2 of the present invention. In the drawing, the auxiliary weight 16 is hooked on the auxiliary weight mounting plate 20 provided only on one side surface of the holding portion 15 via the hook portion 21. The auxiliary weight 16 is not provided with the foot portion 22 as in the first embodiment. Further, the pedestal 23 erected on the bottom surface of the pit 10 has a flat surface at the upper portion thereof, and this flat surface is disposed above the tension wheel 11 and in the vicinity of the speed governor rope 12. The rest of the configuration is the same as that of the first embodiment.

Next, a passenger rescue method when using this confinement rescue device will be described.
As in the first embodiment, the holding portion 15 and the auxiliary weight 16 are attached to the governor rope 12 to create an unbalanced state of weight between the car 2 side and the counterweight 3 side, and the car 2 is moved. When the movement of the car 2 is started, the holding unit 15 and the auxiliary weight 16 move downward until the lower surface of the instrument base 17 of the holding unit 15 collides with the flat upper surface of the base 23. When the lower surface of the device base 17 of the holding unit 15 collides with the upper surface of the pedestal 23, the auxiliary weight 16 and the holding unit 15 stop falling due to the collision, but the governor rope 12 continues to move due to inertial force. The clamp 19 holding the governor rope 12 is also guided by the rail 18 and moves downward. Thereafter, the clamp 19 is separated from the governor rope 12 and stops at the lower part of the device base 17. However, the governor rope 12 continues to move due to inertial force even after the upper surface of the pedestal 23 of the holding portion 15 collides. Become. That is, the movement of the car 2 continues even after the confinement rescue device is stopped.

  According to the second embodiment of the present invention, the movement of the car 2 is continued without stopping even after the holding portion 15 collides with the upper surface of the base 23 and the dropping of the holding portion 15 and the auxiliary weight 16 stops. The distance by which the car 2 can be moved by a single mounting operation of the confinement rescue device can be greatly increased, and a quick rescue operation can be performed. Further, since the auxiliary weight 16 is provided only on one side surface of the holding portion 15, the auxiliary weight 16 and the like come into contact with the tension wheel 11 and the governor weight 13 when the holding portion 15 collides with the upper surface of the base 23. It becomes easy to attach so that it does not, and workability | operativity can be improved. Other than that, the same effects as those of the first embodiment can be obtained.

Embodiment 3 FIG.
FIG. 8 is a front view of an elevator confinement and rescue apparatus according to Embodiment 3 of the present invention, and FIG. 9 is a diagram for explaining the operation of the elevator confinement and rescue apparatus according to Embodiment 3 of the present invention.
When a passenger is trapped due to a power failure, the worker must not move the car 2 even if the brake device is released, and the total weight on the car 2 side and the total weight on the counterweight 3 side should be balanced. After confirming the above, it enters into the pit 10 of the hoistway 1, and the holding portion 24 is fixed as high as possible on the balance chain 8. The holding portion 24 includes an attachment portion 25 having a concave portion 25a on the upper surface and an attachment plate 26. The balance chain 8 is sandwiched between the attachment portion 25 and the attachment plate 26, and the attachment plate 26 is attached with bolts. It is attached to the balance chain 8 by being fastened to the portion 25. After attaching the holding part 24 to the balance chain 8, the hook-like hooking part 22 b of the auxiliary weight 16 is hooked on the concave part 25 a of the fixing part 25 from above, so that the weight between the car 2 side and the counterweight 3 side is increased. The car 2 is moved. When the movement of the car 2 is started, the holding portion 24 and the auxiliary weight 16 move downward until the lower surface of the auxiliary weight 16 collides with the bottom surface of the pit 10. When the auxiliary weight 16 collides with the bottom surface of the pit 10, the latching portion 22b is detached from the recess 25a and the auxiliary weight 16 stops, but the counter chain 8 continues to move due to the inertial force. That is, the movement of the car 2 continues even after the auxiliary weight 16 stops.

  According to the third embodiment of the present invention, since the movement of the car 2 continues without stopping even after the auxiliary weight 16 collides with the bottom surface of the pit 10 and the dropping of the auxiliary weight 16 stops, the confinement and rescue device can be connected to the balancing chain. Even in the case of attaching to the car 8, the distance that the car 2 can be moved can be greatly increased by one installation work of the confinement and rescue device, and the time required to rescue the passengers trapped in the car 2 And labor can be greatly reduced, and prompt rescue is possible. In the third embodiment, the auxiliary weight 16 directly collides with the bottom surface of the pit 10 and is detached from the holding portion 24. However, in order to reduce this impact, a movement stopping means such as an impact reducing material is used. May be provided on the bottom surface of the pit 10.

It is a whole front view of an elevator apparatus. BRIEF DESCRIPTION OF THE DRAWINGS It is a front view of the elevator confinement rescue apparatus in Embodiment 1 of this invention. It is a side view of the elevator confinement rescue apparatus in Embodiment 1 of this invention. It is a principal part top view of the confinement rescue apparatus of the elevator in Embodiment 1 of this invention. It is a principal part front view of the elevator confinement rescue apparatus in Embodiment 1 of this invention. It is a figure for demonstrating operation | movement of the elevator confinement rescue apparatus in Embodiment 1 of this invention. It is a figure for demonstrating operation | movement of the elevator confinement rescue apparatus in Embodiment 2 of this invention. It is a front view of the elevator confinement rescue apparatus in Embodiment 3 of this invention. It is a figure for demonstrating operation | movement of the elevator confinement rescue apparatus in Embodiment 3 of this invention. It is a front view of the conventional confinement rescue apparatus of an elevator.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hoistway 2 Cage 3 Counterweight 4 Main rope 5 Machine room 6 Drive sheave 7 Baffle 8 Balance chain 9 Governor 10 Pit 11 Tensioner 12 Governor rope 13 Governor weight 14 Emergency stop 15, 24, 27 Holding portion 16 Auxiliary weight 17 Instrument base 17a, 17b Guide surface 18 Rail 19 Foot 19a Tight groove 20 Auxiliary weight mounting plate 20a Mounting hole 21 Latching portion 22 Foot portion 23 Base 25 Mounting portion 25a Recessed portion 26 Mounting plate

Claims (5)

  A rope attached to the elevator car and moving up and down in conjunction with the raising and lowering of the car; and a holding part that is fixed to the rope and is released from the rope when a force acts on the rope upward; An elevator confinement / rescue device comprising: an auxiliary weight provided in the holding portion; and a movement stopping means for stopping the holding portion and the auxiliary weight from moving downward.   The elevator confinement rescue apparatus according to claim 1, wherein the rope is a balance rope or a governor rope.   The elevator confinement / rescue device according to claim 1 or 2, wherein the auxiliary weight is detachable from the holding portion.   A balance chain that is attached to the elevator car and moves up and down in conjunction with the raising and lowering of the car, a holding part provided on the balance chain, and fixed to the holding part, and upward with respect to the holding part An elevator confinement / rescue device comprising an auxiliary weight that is disengaged from the holding portion when a force is applied.   The elevator confinement rescue means according to claim 4, further comprising a movement stop means for stopping the downward movement of the auxiliary weight.

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