JP2012041142A - Elevator and compensation rope traction device used therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To rescue passengers by efficiently and safely moving a car of a balance state up to the nearest story in the middle of a hoistway.SOLUTION: This elevator of one embodiment includes a compensation rope, a compensation sheave and a compensation rope traction device. The compensation rope is suspended by connecting one end to the car and the other end to a counterweight. The compensation sheave is wound with the compensation rope, and freely moves in the vertical direction, and also imparts tension to the compensation rope by dead weight. The compensation rope traction device is detachably fixed to the compensation sheave, and has an auxiliary sheave and an operation handle. The auxiliary sheave is oppositely provided with a plurality of rope grooves to a rope groove of the compensation sheave of a fixing destination, and sandwiches the compensation rope between the compensation sheave and itself. The operation handle is arranged by being directly coupled with a rotary shaft of the auxiliary sheave, and rotates the auxiliary sheave by rotational operation, and tows the compensation rope.

Description

  Embodiments of the present invention relate to an elevator that moves a car to the nearest floor in a rescue operation during an emergency stop of an elevator, and a compen- rope pulling device used therefor.

  If an elevator carrying passengers stops in the middle of a boarding / exiting floor due to a power failure or malfunction, the car is moved to the nearest boarding / exiting floor (hereinafter the nearest floor) to safely rescue the passengers There is a need to. In a lift-type elevator composed of a car and a counterweight, the lift of the hoist installed in the machine room is released, so that the car is lifted up by an imbalance with the car and the counterweight. Or move it down. If the car and the counterweight are in a balanced state and the car does not move even after the hoisting machine's braking device is released, manually rotate the hoisting machine while releasing the hoisting machine's braking device. To move the car.

  On the other hand, in an elevator without a machine room, the hoist cannot be manually rotated even if the elevator does not move by releasing the brake device of the hoist by using a remote device. Therefore, in this case, from the nearest floor above the position where the car is stopped, the worker gradually loads the rescue weight on the ceiling of the car, and the car and the counterweight are unbalanced. The method of moving the car in a proper state is taken.

JP-A-8-99780

  However, the above-mentioned rescue method in an elevator without a machine room uses a rope to lower the rescue weight when the car is away from the nearest floor, so the work is complicated and time is required for rescue. . In the unlikely event that a rescue weight is dropped on the ceiling of the car, the passengers in the car will be further anxious. Also, even if the car is in the immediate vicinity of the nearest floor, the car can only be moved down, so it must eventually be moved to the nearest lower floor and rescued. Contributes to the increase in time.

  Therefore, in view of the above-mentioned problems of the prior art, the present invention provides an elevator that can efficiently and safely move a balanced car to the nearest floor in the middle of a hoistway, and a compen- sion towing used in the elevator. Propose the device.

  An elevator according to an embodiment of the present invention includes a compen- sion rope, a compensatory sheave, and a compen- sion rope traction device. The compen- sion rope is suspended by being connected at one end to the car and at the other end to a counterweight. The compensation sheave is wrapped around a compensation rope, is movable in the vertical direction, and gives tension to the compensation rope by its own weight. The compensation rope pulling device is detachably fixed to the compensation sheave and has an auxiliary sheave and an operation handle. The auxiliary sheave is provided with a plurality of rope grooves facing the rope groove of the compensator to which the auxiliary sheave is fixed, and sandwiches the compen- sion rope with the compensatory sheave. The operation handle is provided directly connected to the rotation shaft of the auxiliary sheave, and rotates the auxiliary sheave by a rotation operation to pull the compen- sion rope sandwiched between the operation sheave.

The schematic diagram which shows the structural example of the elevator which concerns on one Embodiment of this invention. The top view which shows the example of installation of the elevator rope pulling apparatus which concerns on one Embodiment of this invention. The side view of FIG. FIG. 2 is an enlarged view of a main part of the elevator rope pulling device shown in FIG. 1. The figure which shows the structure of the auxiliary sheave of the compensation rope traction device shown in FIG. The figure which shows the structure of the auxiliary sheave of the compensation rope pulling apparatus which concerns on the modification 1 of this invention. The top view which shows the example of installation of the elevator rope pulling apparatus which concerns on the modification 2 of this invention.

  Hereinafter, an elevator according to an embodiment of the present invention and a compen- rope pulling device used therewith will be described in detail with reference to FIGS. 1 to 7. In the drawings, the same portions are denoted by the same reference numerals, and redundant description is omitted.

  FIG. 1 is a schematic diagram illustrating a configuration example of an elevator according to an embodiment of the present invention. As shown in the figure, a hoisting machine 2 and a deflecting sheave 3 adjacent to the hoisting machine 2 are disposed at the upper part of the hoistway 1, and a main rope 4 is attached to the hoisting machine 2 and the deflecting sheave 3. It is wrapped around. One end of the main rope 4 is attached to the upper part of the car 5 and the other end is connected to the upper part of the counterweight 6. In the figure, it is shown that the car 5 stops under a certain floor and is in an equilibrium state.

  Further, one end side of the compen- sion rope 8 is connected to the lower part of the car 5 and the other end side is connected to the lower part of the counterweight 6. The intermediate portion of the compen- sion rope 8 is wound around a compensatory 9 disposed in the lowermost pit portion of the hoistway 1.

  The compensation sheave 9 is for imparting an appropriate tension to the compensation rope 8 by its own weight, and for preventing the compensation rope 8 from shaking greatly in the lateral direction while the car 5 is traveling. In particular, in a high floor elevator, the length of the main rope 4 is very long, so depending on the position of the car in the hoistway 1, it is caused by the weight of the main rope 4 between the car side and the counterweight side. Load imbalance is likely to occur. In order to prevent the occurrence of such load imbalance, a compen- sion rope 8 and a compensatory sheave 9 are installed.

  The sheave support of the compensatory 9 is vertically oriented within a certain range along the guide rail 10 for the compensatory 9 fixed to the floor of the lowermost part of the hoistway 1 (hereinafter referred to as “pit part”). It can be moved freely. Thus, by making the sheave support movable in the vertical direction, it is possible to suppress the vibration of the compensatory 9 during the elevator operation.

  The compen- sion rope pulling device 11 is detachably fixed to the compensatory 9 and the operator 12 performs a rotation operation with the compen- sion rope 8 being sandwiched between the compen- sive sheave 9 and the compen- sation rope 8. Can be pulled in a desired direction.

  FIG. 2 is a top view when the compensator pulling device 11 is fixed to the compensatory 9 shown in FIG. 1, and FIG. 3 is a side view thereof. The compensation sheave 9 includes a sheave 91 around which the compensation rope 8 is wound, a sheave support 92 formed of a pair of frame plates, and a rotating shaft 93 that supports the sheave 91 on the sheave support 92. The plurality of compen- sion ropes 8 are wound along a rope groove 91a provided on the outer periphery of the sheave 91. The sheave support 92 of the compensatory 9 is provided with a stud bolt 94 which is a fixing mechanism corresponding to the fastening body 116 on the compen- sion rope pulling device 11 side. 11 is fixed to the outer periphery of the compensatory 9.

  An operation handle 112 is detachably attached to both ends of the rotating shaft 111 of the compen- rope pulling device 11, and an auxiliary sheave 113 is connected around the rotating shaft 111. Then, when the operator manually rotates the operation handle 112 in a desired direction, the rotation shaft 111 and the auxiliary sheave 113 rotate in synchronization with each other and are sandwiched between the compensatory 9 and the compen- sion rope pulling device 11. The compen rope 8 is pulled.

  FIG. 4 is an enlarged view of a main part of the compen- rope pulling device 11 for the elevator shown in FIG. On the outer periphery of the auxiliary sheave 113, the same number of rope grooves 113a as the sheaves 91 of the compensatory sheave 9 are provided, and the sheave 91 and the auxiliary sheave 113 can sandwich the compen- sion rope 8 without contacting each other. By tightening the fastening body 116 provided on the outside of the bracket 115 in the direction in which the bracket 115 is pushed in, the distance between the rotary shaft 93 and the rotary shaft 111 is narrowed, so that the force for sandwiching the compensation rope 8 can be adjusted.

  FIG. 5 is a view showing the structure of the auxiliary sheave 113 of the compen- rope pulling device 11 according to this embodiment. Here, only the surface layer of the auxiliary sheave 113 or the entire auxiliary sheave 113 is made of a resin material such as urethane. With this configuration, the frictional force between the auxiliary sheave 113 and the compensation rope 8 is increased, so that the rotational force by the operation handle 112 can be efficiently transmitted to the compensation rope 8.

Hereinafter, the procedure of the rescue operation using the compen- rope pulling device 11 described with reference to FIGS. 1 to 4 will be described.
(1) The elevator stopped in an emergency on the middle floor and a passenger confinement accident occurred.
(2) Check the stop position of the car 5 and the nearest floor from there.
(3) The worker A moves to the top floor and releases the braking device of the hoist 2 using a remote device.
(4) If the car 5 does not move even after the braking device is released, the remaining workers B and C move to the pit portion, and the compen- sive rope pulling device 11 is installed on the compensatory 9.
(5) Worker A and workers B and C can always communicate with each other with a radio device or the like. Worker A and B release the brake device of hoisting machine 2 and worker B and C The operation handle 112 of the compen- rope pulling device 11 is rotated manually to move the car 5 to the nearest floor.
(6) Open the landing door 7 on the nearest floor and rescue the passenger.

  As described above, according to the compen- sion rope pulling device 11 according to the present embodiment, the rotational force of the operation handle 112 can be directly transmitted to the compen- sation rope 8 by sandwiching the compen- sion rope 8 with the compensatory 9. Therefore, even when the traction between the sheave 91 and the compensation rope 8 is small, the compensation rope 8 can be reliably pulled without causing slippage.

Hereinafter, a compen- sion rope pulling device 11 according to a modification of the present invention will be described with reference to Figs.
<Modification 1>
FIG. 6 is a diagram showing the structure of the auxiliary sheave of the compen- rope pulling device according to the first modification of the present invention. Groove machining (undercut) 113b is applied to the bottom of the rope groove 113a provided on the outer periphery of the auxiliary sheave 113.

  With this configuration, the groove processing 113b increases the surface pressure of the compensation rope 8 with respect to the auxiliary sheave 113, so that the rotational force by the operation handle 112 can be efficiently transmitted to the compensation rope 8.

<Modification 2>
FIG. 7 is a top view showing an installation example of the elevator rope pulling device according to the second modification of the present invention. Instead of the operation handle 112 described in FIG. 2 and FIG. 3, a general-purpose electric tool 13 is connected to the end of the rotating shaft 111 of the compen- rope pulling device 11 via the socket 13a. It is assumed that the end of the rotating shaft 111 has a shape that can be fitted to the socket 13a of the electric power tool 13.

  By comprising in this way, the burden of the operator required for rescue work can be reduced significantly by using the driving force of the electric tool 13. For example, this is particularly effective when there is a non-stop floor on the way and the moving distance to the nearest floor becomes long. It can also reduce the number of personnel required for rescue operations.

Therefore, according to the elevator compel rope traction device 11 according to the above embodiment, the following effects can be expected in common.
(1) Reduction of rescue time Troublesome work such as loading a rescue weight is reduced. In addition, since the work is performed in the pit portion, it can be surely rescued regardless of the stop position of the car 5, and the car 5 can be moved up and down, so that it can be moved to the nearest floor. That is, it is possible to move not only to the lower floor as in the prior art but also to the upper floor.
(2) Improvement of work reliability Failures such as dropping a rescue weight on the ceiling of the car 5 are reduced.
(3) Ensuring worker safety Since the work is performed in the pit, the risk of falling into the hoistway 1 from the nearest floor is reduced.

  In addition, although some embodiment of this invention was described, these embodiment is shown as an example and is not intending limiting the range of invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 1 ... Hoistway 2 ... Hoisting machine 3 ... Warp sheave 4 ... Main rope 5 ... Car 6 ... Balance weight 7 ... Landing door 8 ... Compen rope 9 ... Compensation sheave 10 ... Guide rail 11 ... Compen rope pulling device 12 ... Work Member 13 ... Electric tool 13a ... Socket 91 ... Sheave 91a ... Rope groove 92 ... Sheave support 93 ... Rotating shaft 94 ... Stud bolt 111 ... Rotating shaft 112 ... Operation handle 113 ... Auxiliary sheave 113a ... Rope groove 113b ... Groove machining 114 ... Bearing portion 115 ... bracket 116 ... fastened body

Claims (10)

One end is connected to the car, the other end is connected to the counterweight,
A compensator wound around the compenand rope, movable in the vertical direction, and applying tension to the compenand rope by its own weight;
A compenand rope pulling device fixed to the compensator so as to be detachable;
Comprising
The Compen rope pulling device is:
A plurality of rope grooves are provided opposite to the rope groove of the compensatory sheave of the fixing destination, and an auxiliary sheave that sandwiches the compen- sion rope with the compensatory sheave,
An operation handle that is provided directly connected to the rotation shaft of the auxiliary sheave, rotates the auxiliary sheave by a rotation operation, and pulls the compenand rope sandwiched between the compensatory sheave;
The elevator characterized by having.   The compen- sion rope pulling device further includes a fastening body that sandwiches the compen- sion rope between the auxiliary sheave and the compen- sation sheave by fixing to a fixing mechanism provided on the compens- ation sheave, and that can adjust the clamping force. The elevator according to claim 1, comprising:   3. The elevator according to claim 2, wherein the auxiliary sheave is a resin material having wear resistance in only the surface layer or the entire material.   The elevator according to claim 2, wherein the auxiliary sheave is grooved at the bottom of the rope groove.   The compen- rope pulling device includes a power tool socket fixing mechanism at one or both ends of the rotation shaft of the auxiliary sheave, and rotates the auxiliary sheave based on the driving force of the fixed electric tool. The elevator according to any one of claims 1 to 4. A compen- sion rope that has one end connected to the car and the other end connected to a counterweight, and the compen- sion rope is wound around, and the compen- Compensation rope traction device that is detachably fixed to the compensation sheave in an elevator comprising:
A plurality of rope grooves are provided opposite to the rope groove of the compensatory sheave of the fixing destination, and an auxiliary sheave that sandwiches the compen- sion rope with the compensatory sheave,
An operation handle that is provided directly connected to the rotation shaft of the auxiliary sheave, rotates the auxiliary sheave by a rotation operation, and pulls the compenand rope sandwiched between the compensatory sheave;
Compensating rope pulling device for an elevator.   The compen- sion rope pulling device further includes a fastening body that sandwiches the compen- sion rope between the auxiliary sheave and the compen- sation sheave by fixing to a fixing mechanism provided on the compens- ation sheave, and that can adjust the clamping force. The elevator rope pulling device for an elevator according to claim 6.   The elevator rope compensator pulling device according to claim 7, wherein the auxiliary sheave is made of a resin material having only a surface layer or an overall material having wear resistance.   The compensator pulling device for an elevator according to claim 7, wherein the auxiliary sheave is grooved at the bottom of the rope groove.   The compen rope pulling device further includes a power tool socket fixing mechanism at one or both ends of the rotation shaft of the auxiliary sheave, and rotates the auxiliary sheave based on the driving force of the fixed electric tool. The elevator rope pulling device for an elevator according to any one of claims 6 to 9.

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