JP2005280988A - Bilateral type elevator, and method for controlling the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bilateral type elevator suitable for the elevator which is installed in a public space such as a station and elevated/lowered between upper and lower levels. <P>SOLUTION: A pair of cars 1, 2 are mounted on both ends of a rope 3, the rope 3 is stretched over a hoisting drum 5 and a deflector wheel 8 arranged immediately thereabove so that one car 1 is elevated when the other car 2 is lowered, and a floor alignment mechanism 12 is provided on the rope 3. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a double-action elevator that moves up and down between two levels, such as a station and a public square, and a control method therefor.

  Elevators installed in high-rise buildings and the like generally move up and down between a plurality of floors according to demand, but even when a plurality of elevators are installed, they are usually operated independently. For this reason, it is necessary to provide one lifting mechanism for one car on which personnel and luggage are mounted. As a lifting mechanism, a rope type in which a wire rope (hereinafter simply referred to as “rope”) in which a car is suspended is wound around a winding drum, a screw shaft type that rotates either a vertical screw shaft and a nut that is screwed on the rope, hydraulic pressure A hydraulic type that is pushed up by a cylinder is often used.

  FIG. 3 is a configuration diagram of a very general rope-type elevator. 1 is a car, 3 is a rope, 4 is a counterweight, 5 is a winding drum (shallow wheel) as an elevating mechanism, and 8 is a curling wheel. In addition, as shown in this figure, the rope 1 is attached to the rope 1 and the counterweight 4 at both ends as shown in this figure. The rope is fixed to the floor, and the car is moved to the front via a moving pulley. There is 2: 1 roping that suspends the counterweight, but the present invention is not related to which one of them, so the following description will be made with a simple former example.

  In this way, the conventional elevator has one elevator mechanism for one car, and even when a plurality of elevators are provided, even if electrical “group management” is performed, each elevator. Are mechanically independent of each other and repeatedly move up and down individually. As a result, even when a plurality of elevators are installed, there is often a phenomenon that the elevator moves up and down following the same direction, and the waiting time is often not reduced.

Patent Document 1 describes that a pair of cars are attached to both ends of one rope, and operation control is performed with two elevators as bodies. This will be briefly described.
FIG. 4 is a block diagram of this set of elevators, 1 and 2 are a pair of cars, 3 is a rope, and 4 is a counterweight. Here, this counterweight is a linear motor together with a rail 8 that acts as a reaction plate. Is configured. 5 and 6 are winding drums, and 7 is a control device. This elevator has a linear motor as the main power and a conventional winding drum as auxiliary power. The weight of the counterweight 4 is canceled as a pair of cars, that is, two cars, and the linear motor and the hoisting drum correspond to the power for the remaining load. Furthermore, the group management by the control device controls the pair of cars so that they do not rise or fall at the same time, thereby suppressing load peaks and raising and lowering the pair of cars with less power.

The elevator described in Patent Document 1 is an elevator for a general building that serves a plurality of floors. Even if it is attempted to control two elevators as a set with such an elevator, the stop floor is different for each unit, and it is not possible to operate in a sliding manner at exactly the same timing. It must be used, or two lifting mechanisms must be used, and some kind of cushioning mechanism must be provided on the rope that suspends each car.
JP-A-9-142742

By the way, public spaces such as stations and roads that were established in May 2000 were triggered by the “Traffic Barrier-Free Act” (official name: Act for facilitating mobility using public transportation systems for the elderly and physically disabled). Barrier-free in Japan is making progress. Part of that is the installation of elevators on station premises and footbridges. Such elevators, unlike conventional elevators in general buildings, often repeat up and down between two levels, such as the ground and floor concourse, or the ticket gate floor and home.
An object of the present invention is to realize a double-acting elevator suitable as an elevator that moves up and down between two upper and lower levels, and a control method therefor.

  In the present invention, a pair of cars is attached to both ends of a rope, the rope is passed over a fixed pulley arranged directly above each of the pair of cars, and the rope or one of the cars is connected to a lifting mechanism. In addition, it is a double-acting elevator characterized in that when one of the cars is raised, the other car is lowered, and at least one of the fixed pulleys arranged immediately above the pair of cars is moved vertically. It is possible to move in the direction perpendicular to the straight line connecting the two-way elevator provided with the floor-to-floor mechanism, or two fixed pulleys arranged immediately above a pair of cars. The above-described double-acting elevator provided with a floor alignment mechanism in which a third pulley is arranged, and the above-mentioned double-acting elevator that is started only when each of a pair of cars can be started. of It is your way.

  According to the present invention, even if one car has just started, it means that the other car is approaching, so there is no need to press a button to call the car, and demand is concentrated in one direction. In addition to being able to respond efficiently when there is demand in both directions, not only can it be used comfortably without waiting time, but also two cars can be raised and lowered with the power of one conventional car, The car is called unattended and does not go up and down, so it has an excellent effect that significant energy saving can be achieved.

  In the present invention, since the car only moves up and down between the upper and lower two levels, the function can be achieved simply by attaching a pair of cars to both ends of the rope and simply moving it up and down in a slidable manner. Since the conventional counterweight is replaced with another car, basically the power of one conventional elevator can be used to raise and lower one-to-two cars.

  Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram of a double-acting elevator according to the embodiment. In addition to those used so far, reference numeral 12 denotes a floor matching mechanism, 1F is a floor on the lower floor, and 2F is a floor on the upper floor.

  A pair of cars 1 and 2 are attached to both ends of the rope 3, and the rope is stretched over a fixed pulley arranged immediately above each of the pair of cars. In this figure, one of the fixed pulleys is also used as the hoisting drum 5 so that the rope 3 is connected to the lifting mechanism, and the other fixed pulley is warped to form the vehicle 8. In addition, you may use things other than a rope type as a raising / lowering mechanism, and you may connect the rope for raising / lowering to one cage | basket separately from the rope 3 of the illustration which has suspended the cage | basket directly also in the case of a rope type. It is also within the scope of the present invention that the end of the rope 3 is not directly connected to the car but the 2: 1 roping is performed via a pulley.

  By the way, it is necessary to align the floors of the elevators so that there is no level difference between the car and the floor surface at every stop floor. For example, for one car 1, floor matching can be performed by a conventional method using a proximity switch or the like. However, since the car 2 stops at the same timing when the car 1 stops in the twin-type elevator of the present invention, when the stop position of the car 1 is adjusted on the first floor, the car 2 is not exactly at the floor level on the second floor. Don't be. Therefore, if the elongation of the rope 3 and various errors are taken into consideration, it is difficult to match both floor levels at the same time. Therefore, the double-action elevator of the present invention is provided with a floor matching mechanism 12. In the example of FIG. 1, the floor alignment mechanism 12 is inserted into the portion where the curving wheel 8 is suspended so that the warping wheel 8 can be moved in the vertical direction so that the height of the car 2 relative to the car 1 can be adjusted. . The floor alignment mechanism 12 is, for example, a screw mechanism that expands and contracts the entire length.

  FIG. 2 shows an example of a floor alignment mechanism 12 different from that shown in FIG. A fixed pulley arranged just above a pair of cars, that is, in this example, a third pulley 11 that is movable in a direction perpendicular to a straight line connecting the winding drum 5 and the baffle 8 shown by a broken line is arranged in the middle. doing. The height of the car 2 relative to the car 1 can be adjusted by moving the third pulley 11 with the floor matching mechanism 12.

  Another problem that must be solved in the twin elevator of the present invention is the timing of the start of the car. Since the conventional elevator is operated independently for each car, the car door is closed and can be started when a predetermined time elapses. However, in the double-type elevator of the present invention, even if one of the cars is start OK, it cannot be started unless it is confirmed that the other car is start OK. Generally, the door is closed by either a “close” button or a timer setting, and a warning alarm for closing the door is also provided.However, if there is a passenger, the optical sensor or the safety door edge inside the door Normally, a door that has been closed by sensing is reopened, and the function of the present invention is naturally provided in the double-action elevator of the present invention.

  Therefore, even if one car is OK to start, if the other car is not OK, it is necessary to cancel the start by the control circuit. Although not particularly shown, this is easy by making the starting condition of the control device an AND circuit. Further, it is preferable to provide a display lamp for informing the other party's car status, a TV image, or the like so that the other party can understand such a situation.

  It is a block diagram which shows the double type elevator of an Example.   It is a block diagram which shows the example of the floor alignment mechanism different from FIG.   It is a block diagram which shows the conventional elevator.   It is a block diagram of the elevator which raises / lowers two cars in a prior art.

Explanation of symbols

1, 2 Car 3 Rope 4 Counterweight 5, 6 Winding drum (shelves)
7 Control device 8 Rail 9, 10 Warpage wheel 11 Pulley 12 Floor alignment mechanism 1F Lower floor 2F Upper floor

Claims (4)

  A pair of cars (1, 2) is attached to both ends of the rope (3), and the rope or one of the cars is passed over the fixed pulleys (5, 8) arranged immediately above the pair of cars. Is connected to one lifting mechanism, and is configured such that when one car rises, the other car descends.   The twin according to claim 1, further comprising a floor alignment mechanism (12) that allows at least one of the fixed pulleys (5, 8) arranged immediately above the pair of cars (1, 2) to move in the vertical direction. Dynamic elevator.   A floor-matching mechanism comprising a third pulley (11) movable in a direction perpendicular to a straight line connecting these two fixed pulleys (5, 8) arranged immediately above a pair of cars ( 12. A double-action elevator according to claim 1, comprising 12).   4. The control method for a double-acting elevator according to claim 1, wherein each of the pair of cars is started only when both of the cars are ready to start.

Images