JP7003954B2 - Double deck elevator - Google Patents

Description

The present invention relates to a double-deck elevator, and more particularly to a double-deck elevator in which an upper car and a lower car are provided in an outer car.

The double-deck elevator, which has a two-story structure with an upper car and a lower car installed in the outer car that goes up and down in the hoistway, is superior in transportation capacity compared to an elevator consisting of a single car. .. In addition, less installation space is required to obtain the same transportation capacity. For this reason, it is being introduced into large-scale high-rise buildings.

The outer car is connected to the counterweight by a main rope, and the main rope is hung on a sheave of a hoist installed in a machine room at the upper part of the hoistway. Then, by driving the hoisting machine motor constituting the hoisting machine and rotating the sheave, the outer car is raised and lowered to the target position corresponding to each destination floor of the upper and lower car, and the upper car is raised and lowered. The basket and the lower basket are designed to land on different floors.

By the way, depending on the building, the floor height may be uneven. For example, the first floor is an entrance hall with a high ceiling, and the second floor and above are office floors with a lower ceiling than the first floor.

In a double-deck elevator installed in a building with uneven floor heights like this, it is necessary to adjust the distance between the upper and lower baskets according to the floor heights of the two floors that land at the same time. As a double deck elevator that enables this adjustment, the upper car was hung on one end side of a wire rope, which is a kind of cord-like object that was hung on a drive sheave and folded back, and the lower car was hung on the other end side. Those having a structure are known (Patent Document 1). Inside the outer car, guide rails for the upper and lower car are installed in the vertical direction, and each of the upper car and the lower car is provided with an upper car guide shoe and a lower car guide shoe guided by the guide rail. Has been done.

According to the above configuration, if the drive sheave is rotated in the first direction and the lower car is pulled up and raised, the upper car is guided by the guide rail via the upper car guide shoe and descends. The spacing can be shortened, the drive sheave can be rotated in a second direction opposite to the first direction, and the upper car can be pulled up and raised, and the lower car will be guided to the guide rail via the lower car guide shoe. Since it descends, the car spacing can be lengthened, and the car spacing can be adjusted. As a result, the distance between the cars can be adjusted according to the destination floor.

In the double deck elevator configured as described above, the upper and lower cages are only suspended by wire ropes inside the outer cage, so if the ascending outer cage suddenly stops, the upper and lower cages will be suspended. There is a situation where both of them jump up in the outside basket.

For example, the hoisting machine goes out of control due to a trouble in the electric system, and the counterweight plunges into a shock absorber installed at the bottom of the hoistway. In this case, the upper car and the lower car that are rising together with the outer car may jump up due to the inertia even after the outer car suddenly stops, and in some cases, the wire rope may come off from the drive sheave. ..

In order to prevent the upper car and the lower car from jumping up, Patent Document 1 describes the stopper sheaves 32a and 32b provided at the lower part of the outer car frame 7 and the stopper sheaves as shown in FIG. A double deck elevator having stopper ropes 33a and 33b wound around 32a and 32b and having one end connected to an upper car 8 and the other end connected to a lower car 9 is described (Patent Document 1 paragraph []. 0044]). Further, the stopper sheaves 32a and 32b and the stopper sheaves 32a and 32b are configured to be unevenly arranged on the front side of the upper car 8 and the lower car 9 (paragraph [0045] of Patent Document 1).

According to the double deck elevator described in Patent Document 1, even if the outer car frame 7 suddenly stops during the ascent, the upper car 8 and the lower car 9 are prevented from ascending to the outer car frame 7. Paragraph 1 of Patent Document 1 [0044]). Further, in Patent Document 1, "Since the stopper rope wheels 32a, 32b and the stopper ropes 33a, 33b are arranged unevenly on the front side of the upper car 8 and the lower car 9, the upper car 8 and the lower side with respect to the main frame 7 When preventing the car 9 from rising, an unbalanced load on the front side acts on the upper car 8 and the lower car 9. As a result, the frictional resistance of the upper car guide shoe 8c and the lower car guide shoe 9c is increased, and the upper car 8 and the lower car 9 can be more reliably prevented from rising with respect to the main frame 7. (Patent Document 1 paragraph [0045]).

International Publication No. 2014/027398 (Patent No. 5931023) International Publication No. 2007/074206

However, in the double deck elevator of Patent Document 1, the upper car 8 and the lower car 9 may be tilted and vibrate back and forth due to the influence of the eccentric load acting on the upper car 8 and the lower car 9. This may further increase passenger anxiety during an emergency stop.

In view of the above problems, the present invention can effectively suppress the jumping of the upper car and the lower car while preventing the upper car and the lower car from tilting as much as possible when the outer car is suddenly stopped. The purpose is to provide a double deck elevator.

In order to achieve the above object, the double deck elevator according to the present invention has an upper car and a lower car inside an outer car that moves up and down in the hoistway, and is hung on a drive sheave and folded back. Interval adjustment for adjustment A double-deck elevator that includes a configuration in which the upper car is suspended on one end side and the lower car is suspended on the other end side, and has a jump-up suppressing mechanism for the upper car and the lower car. The jump suppression mechanism is a fixed pulley device installed in an outer car portion below the lower car, and is guided upward by the fixed pulley device to fold the upper car and the lower car upward. It is provided with a cord-like means to be connected, and the upper cage and the lower cage are mutually pulled downward by the tension generated in the cord-like means, and the line of action of the resultant force of the tension acting on the upper cage is a plane. It is characterized in that the line of action of the resultant force of tension acting on the lower car passes through the center of gravity of the upper car in view and passes through the center of gravity of the lower car in plan view.

Further, the fixed pulley device includes a first fixed pulley and a second fixed pulley, the cord-like means is guided by the first fixed pulley and folded upward, and the first end portion is above the above. The second end is guided by the first cord-like object connected to the lower car and the second fixed pulley and folded upward, and the first end is attached to the upper car and the second. The end is composed of a second cord connected to the lower cage, and the first end of the first cord and the first end of the second cord are flat. It is connected at a position that is point-symmetrical with respect to the center of gravity of the upper cage visually, and the second end portion of the first cord-like object and the second end portion of the second cord-like object are flat surfaces. It is characterized in that it is connected at a position that is point-symmetrical with respect to the center of gravity of the lower cage visually.

Alternatively, it has a first movable pulley device and a second movable pulley device that are installed at the lower part of the lower car and move up and down together with the lower car, and the fixed pulley device is a first set consisting of a pair of fixed pulleys. Including a second set of fixed pulleys consisting of a fixed pulley and a pair of fixed pulleys, the cord-like means is composed of a first cord-like object and a second cord-like object, and the first cord-like object is The first end side, which is guided by the first movable pulley device and folded downward, is guided by one of the fixed pulleys of the first set of fixed pulleys and folded upward, and the first end is formed. The second end is connected to the upper cage, the second end side is guided by the other fixed pulley and folded upward, and the second end is connected to the upper cage. The first end side guided by the second movable pulley device and folded downward is guided by one of the fixed pulleys of the second set of fixed pulleys and folded upward, and the first end portion is above the above. The first end of the first cord-like object is connected to the car, the second end side is guided by the other fixed pulley and folded upward, and the second end is connected to the upper car. The portion and the second end portion, and the first end portion and the second end portion of the second cord-like object are connected at a position symmetrical with respect to the center of gravity of the upper cage in a plan view. In the first movable pulley device and the second movable pulley device, the line of action of the resultant force of the tension generated in the cord-like object portion guided and folded by each of the two movable pulley devices is the lower side in a plan view. It is characterized by being installed at a position that passes through the center of gravity of the car.
Alternatively, the fixed pulley device includes a first fixed pulley and a second fixed pulley, which are installed at the lower part of the lower cage and move up and down together with the lower cage. , The cord-like object is composed of a single cord-like object, and a part of the cord-like object is guided downward by the movable pulley device and is connected to the lower basket via the movable pulley device. The first end side guided by the movable pulley device and folded downward is guided by the first fixed pulley and folded upward, and the first end is connected to the upper cage and the second end is connected to the upper cage. The end side is guided by the second fixed pulley and folded upward so that the second end is connected to the upper cage, and the first end and the second end of the cord are connected to each other. The movable pulley device is connected at a position symmetrical with respect to the center of gravity of the upper car in a plan view, and the movable pulley device is guided by the movable pulley device and is acted on by the resultant force of tension generated in the folded both cord-like objects. The line is installed at a position passing through the center of gravity of the lower cage in a plan view.

In this case, the movable pulley device includes a first movable pulley and a second movable pulley, and the single cord-like object is hung on the first movable pulley and the second movable pulley. The first end side is the first movable pulley, the second end side is folded downward by the second movable pulley, and the first movable pulley and the second movable are movable. The pulley is characterized in that it is installed at a position symmetrical with respect to the center of gravity of the lower car in a plan view.

According to the double deck elevator according to the present invention having the above configuration, for example, the upper car and the lower car are rising together with the outer car due to the sudden stop of the rising outer car for some reason. Even if the car tries to jump up due to its inertia even after the car stops suddenly, the upper car and the lower car are guided by the fixed slide device installed in the outer car part below the lower car and turned back. Since it is connected by a cord-like means, excessive jumping is suppressed.

At this time, the reaction of the upper and lower cages pulling the cord-like means causes tension in the cord-like means, and the tension causes the upper and lower cages to be pulled downward from each other, but acts on the upper cage. The line of action of the resultant force of tension passes through the center of gravity of the upper car in plan view, and the line of action of the resultant force of tension acting on the lower car passes through the center of gravity of the lower car in plan view. The posture of the upper and lower cages is hardly changed by being pulled downward by the tension generated in the cord-like means. That is, it is possible to prevent the upper car and the lower car from tilting as much as possible.

It is a figure which shows the schematic structure of the whole double deck elevator which concerns on Embodiment 1. FIG. It is an enlarged view which shows the outer car of the double deck elevator and the equipment and devices installed in the outer car. In the double deck elevator, (a) is a front view mainly extracting components related to a car spacing adjusting mechanism, and (b) is a front view mainly extracting components related to a jump suppression mechanism. (A) is a diagram in which the upper car is drawn and (b) is a diagram in which the lower car is drawn in a plan view, and each is a diagram in which elements mainly related to the jump suppression mechanism are extracted and drawn. It is a front view which shows the outer car of the double deck elevator which concerns on Embodiment 2, and the apparatus and apparatus installed in the outer car. FIG. 5 is a right side view cut along the lines E and E in FIG. It is a left side view cut by the GG line in FIG. In the second embodiment, (a) is a diagram in which the upper car is drawn and (b) is a diagram in which the lower car is drawn in a plan view, and each is a diagram in which elements mainly related to the jump suppression mechanism are extracted and drawn. be. In the third embodiment, (a) is a diagram in which the upper car and (b) are drawn in a plan view, and each is a diagram in which elements mainly related to the jump suppression mechanism are extracted and drawn. be. 9 is a diagram showing an upper car, a lower car, and a jump-up suppressing mechanism in the direction of the arrow H in FIG. 9B.

Hereinafter, embodiments of the double deck elevator according to the present invention will be described with reference to the drawings.
<Embodiment 1>
(overall structure)
FIG. 1 is a diagram showing a schematic configuration of the entire double deck elevator 10 according to the embodiment.

As shown in FIG. 1, the double deck elevator 10 is a rope type elevator that employs a traction system as a drive system. A machine room 14 is provided in a building portion above the uppermost part of the hoistway 12. In the machine room 14, a hoisting machine having a sheave 16 and a deflecting wheel 18 are installed.

A main rope 20 is hung on the sheave 16 and the deflecting wheel 18 in a so-called double wrap type. Both ends of the main rope 20 are fixed to the upper part of the hoistway 12. An outer cage 24 is suspended between one end of the main rope 20 and the hoist via a crane 22, and a counter is placed between the other end of the main rope 20 and the hoist via a crane 26. The weight 28 is suspended.

In the above configuration, when the sheave 16 is rotated forward or reversed by a hoist motor (not shown), the main rope 20 wound around the sheave 16 travels, and the outer cage suspended by the main rope 20 travels. 24 and the counterweight 28 move up and down in opposite directions.

The bottom (pit) of the hoistway 12 has a counterweight shock absorber 30 in case the outer car 24 rises too much beyond the top floor or the outer car 24 falls for some reason. An outer car shock absorber 32 is installed.

FIG. 2 is an enlarged view showing the outer car 24 and the equipment and devices installed in the outer car 24. As shown in FIG. 2, the outer cage 24 includes an upper beam 34A, a lower beam 34B, and two vertical frames 34C and 34D connecting the upper beam 34A and the lower beam 34B, and is viewed vertically (up and down). It has a long rectangular outer cage frame 34 (in the direction). Inside the outer car 24, an upper car 36 and a lower car 38 are provided at intervals in the vertical direction.

(Car spacing adjustment mechanism)
FIG. 3A is a diagram in which components mainly for adjusting the car spacing are extracted from FIG. 2. The description will be continued with reference to FIGS. 2 and 3 (a).
The upper car 36 includes a pair of hanging cranes 42A and 42B provided on the upper car main body 40 and the upper part of the upper car main body 40. The lower car 38 includes a lower car main body 44 and a pair of cranes 46A and 46B provided at the lower part of the lower car main body 44.

A hoisting machine 48 for adjusting floors is installed on the upper beam 34A. The inter-floor adjustment hoisting machine 48 has a drive sheave 50 driven forward and reverse by an electric motor (not shown).

A wire rope 52 is hung on the drive sheave 50 as an interval adjusting cord for adjusting the car spacing, and one end 52a and the other end 52b of the wire rope 52 hung on the drive sheave 50 and folded back are both. It is connected to the upper beam 34A. The upper car body 40 is suspended from the wire rope 52 portion between one end 52a and the drive sheave 50 via the cranes 42A and 42B, and the wire rope 52 portion between the other end 52b and the drive sheave 50. The lower car body 44 is suspended from the lower car body 44 via the cranes 46A and 46B.

That is, in the double deck elevator 10 (FIG. 1), the upper car 36 is placed on one end 52a side of the wire rope 52 that is hung on the drive sheave 50 of the floor adjusting hoist 48 installed in the outer car 24 and folded back. It has a configuration in which the lower car 38 is suspended on the other end 52b side.

A pair of guide rails 54A and 54B are provided in the vertical direction between the upper beam 34A and the lower beam 34B (not shown in FIG. 3A). As shown in FIG. 2, guide shoes 56A and 56B and guide shoes 58A and 58B are provided on the upper part and the lower part of the upper car body 40, respectively, corresponding to the guide rails 54A and 54B. Further, guide shoes 60A and 60B and guide shoes 62A and 62B are provided on the upper part and the lower part of the lower car body 44 corresponding to the guide rails 54A and 54B, respectively.
The guide device for guiding the upper car 36 and the lower car 38 to the guide rails 54A and 54B is not limited to the guide shoe, and a roller guide may be used.

In the double deck elevator 10 having the above configuration, if the drive sheave 50 is rotated in the direction of the arrow A and the upper car 36 is pulled up and raised, the lower car 38 is lowered and the car spacing can be lengthened to drive the car. If the sheave 50 is rotated in the direction of arrow B opposite to arrow A and the lower car 38 is pulled up and raised, the upper car 36 is lowered and the car spacing can be shortened, so that the car spacing can be adjusted. It has become. As a result, the distance between the cars can be adjusted according to the destination floor.

(Jump suppression mechanism)
In a double deck elevator that employs a car spacing adjustment mechanism as described above, that is, a traction-type car spacing adjustment mechanism, as described in the [Background Technology] section, the upper and lower car when the outer car suddenly stops. Jumping up becomes a problem.

Hereinafter, the mechanism for suppressing the jumping of the upper car and the lower car in the first embodiment will be described with reference to FIGS. 2, 3 (b), and 4; FIG. 3B is a front view in which components mainly related to the jump suppression mechanism are extracted from FIG. 2. FIG. 4A is a view showing the upper car 36 and FIG. 4B is a view showing the lower car 38 in a plan view, and each is a view in which elements mainly related to the jump suppression mechanism are extracted and drawn. Is.

The jump suppression mechanism includes a fixed pulley device 66 and a cord-like means 72.
The fixed pulley device 66 is installed on the lower beam 34B, which is a portion of the outer car 24 below the lower car 38, via the pedestal 64. The fixed pulley device 66 includes a first fixed pulley 68 having a sheave 68a and a second fixed pulley 70 having a sheave 70a.

The cord-like means 72 includes a first wire rope 74 and a second wire rope 76, which are cord-like objects. The first wire rope 74 is guided upward by the first fixed pulley 68 (sheave 68a), and the first end portion 74e1 is connected to the upper car body 40 via the connecting means 78A. The end portion 74e2 is connected to the lower car body 44 via the connecting means 80A. The second wire rope 76 is guided upward by the second fixed pulley 70 (sheave 70a), and the first end portion 76e1 is connected to the upper car body 40 via the connecting means 78B. The end portion 76e2 is connected to the lower car body 44 via the connecting means 80B.

In the first wire rope 74, between the first fixed pulley 68 and the connecting means 78A, and between the first fixed pulley 68 and the connecting means 80A are stretched in the vertical direction. Further, in the second wire rope 76, the second fixed pulley 70 and the connecting means 78B and the second fixed pulley 70 and the connecting means 80B are stretched in the vertical direction.

As shown in FIG. 4A, the connecting means 78A and the connecting means 78B are provided at positions symmetrical with respect to the center of gravity C1 of the upper car 36 in a plan view. That is, the first end portion 74e1 of the first wire rope 74 and the first end portion 76e1 of the second wire rope 76 are connected at a position symmetrical with respect to the center of gravity C1 of the upper car 36 in a plan view.

Further, as shown in FIG. 4B, the connecting means 80A and the connecting means 80B are provided at positions symmetrical with respect to the center of gravity C2 of the lower car 38 in a plan view. That is, the second end portion 74e2 of the first wire rope 74 and the second end portion 76e2 of the second wire rope 76 are connected at a position symmetrical with respect to the center of gravity C2 of the lower basket 38 in a plan view.

Here, for example, consider a case where the hoisting machine for the outer car 24 goes out of control due to some trouble and the counterweight 28 shown in FIG. 1 plunges into the counterweight shock absorber 30. In this case, the upper car 36 and the lower car 38 that are rising together with the outer car 24 try to jump up due to the inertia even after the sudden stop of the outer car 24, but the upper car 36 and the lower car 38 are the first. Since the 1st wire rope 74 and the 2nd wire rope 76 are connected to each other, excessive jumping is suppressed.

At this time, the reaction of the upper car 36 and the lower car 38 pulling the first wire rope 74 and the second wire rope 76 to jump up causes tension in the first wire rope 74 and the second wire rope, and the tension causes tension in the first wire rope 74 and the second wire rope. , The upper car 36 and the lower car 38 will be pulled downward from each other.

In this case, the first end portion 74e1 of the first wire rope 74 and the first end portion 76e1 of the second wire rope 76 provide the upper car 36 at a position symmetrical with respect to the center of gravity C1 of the upper car 36 in a plan view. It will be pulled downward. That is, the line of action of the resultant force of the tension generated in the first wire rope 74 constituting the cord-shaped means 72 and the tension generated in the second wire rope 76 is configured to pass through the center of gravity C1 of the upper car 36.

Therefore, the posture of the upper basket 36 is hardly collapsed by being pulled downward by the tension generated in the first wire rope 74 and the second wire rope 76. That is, the "uneven load" described in Patent Document 1 (paragraph [0045] of Patent Document 1) hardly acts on the upper car 36. As a result, tilting of the upper car 36 can be suppressed as much as possible.

Further, in Patent Document 1, the guide shoes 8c and 9c (FIG. 2 of Patent Document 1) provided as a guide device are strongly pressed against the guide rail by the above-mentioned "uneven load", so that the guide shoes 8c and 9c are damaged. May be invited. If the guide shoes 8c and 9c are damaged, normal operation cannot be resumed until maintenance personnel replace them, so it takes time to restore the double deck elevator.

On the other hand, in the first embodiment, as described above, since the above-mentioned "uneven load" hardly acts on the upper car 36, the guide shoes 56A, 56B, 58A, 58B, which are guide devices, are damaged as much as possible. It can be avoided.

In addition, not when the above trouble occurs, but even when the outer car is accelerated downward at the start of descent during normal operation, tension is applied to the wire rope connecting the upper car and the lower car. Occurs. In this case, in Patent Document 1, the upper car and the lower car may be tilted due to the above-mentioned "uneven load" and vibrate back and forth, which may adversely affect the riding comfort. Since the posture does not collapse, it does not adversely affect the ride quality as much as possible.

The same applies to the lower basket 38. That is, the second end portion 74e2 of the first wire rope 74 and the second end portion 76e2 of the second wire rope 76 lower the lower car 38 at a position symmetrical with respect to the center of gravity C2 of the lower car 38 in a plan view. Will be pulled to. That is, the line of action of the resultant force of the tensions generated in the first wire rope 74 and the second wire rope 76 constituting the cord-like means 72 is configured to pass through the center of gravity C2 of the lower basket 38.

As a result, the lower car 38 can be prevented from tilting as much as possible, and damage to the guide shoes 60A, 60B, 62A, 62B (FIG. 1), which are guide devices, is avoided as much as possible. In addition, it does not adversely affect the riding comfort during normal operation as much as possible.

<Embodiment 2>
The second embodiment has basically the same configuration as that of the first embodiment except that the jumping suppression mechanism is different. Therefore, the common configuration will be described with reference to the same reference numerals as those in the first embodiment, and the description thereof will be omitted or referred to as necessary, and the jumping suppression mechanism, which is a different part, will be mainly described below.

FIG. 5 is an enlarged view showing the outer car 24 and the devices and devices installed in the outer car 24 in the second embodiment, and is a front view from which elements mainly related to the jump suppression mechanism are extracted. 6 is a right side view of FIG. 5 cut along the EE line, and FIG. 7 is a left side view of FIG. 5 cut along the GG line. FIG. 8A is a view showing the upper car 36 and FIG. 8B is a view showing the lower car 38 in a plan view, and each is a view in which elements mainly related to the jump suppression mechanism are extracted and drawn. Is.

In the jump suppression mechanism according to the second embodiment, the fixed pulley device 84 provided on the lower beam 34B, which is a portion of the outer car 24 below the lower car 38, via the pedestal 82 is the first set of fixed pulleys 86A and the second. Includes two sets of fixed pulleys 86B, one set of fixed pulleys.
The cord-like means includes a first wire rope 92A and a second wire rope 92B.
Further, at the lower part of the lower car 38, a first movable pulley device 94A and a second movable pulley device 94B that move up and down together with the lower car 38 are installed.

In the second embodiment, (i) a first wire rope 92A, a first set of fixed pulleys 86A, and a first movable pulley device 94A, and (ii) a second wire rope 92B, a second set of fixed pulleys 86B, and In the second movable pulley device 94B, the upper car 36 and the lower car 38 are configured to be pulled downward from each other.

As shown in FIG. 6, the first set of fixed pulleys 86A includes a pair of fixed pulleys of a first fixed pulley 88A and a second fixed pulley 90A. Further, the first movable pulley device 94A includes a first movable pulley 96A and a second movable pulley 98A.

The first wire rope 92A is guided by the first movable pulley 96A (sheave 961A) and folded downward, and the first end portion 92Ae1 side is guided by the first fixed pulley 88A and folded upward, and the first end is folded. The portion 92Ae1 is connected to the upper basket 36 by the connecting means 100A. Further, the first wire rope 92A is guided by the second movable pulley 98A (the sheave 981A) and folded downward, and the second end portion 92Ae2 side is guided by the second fixed pulley 90A and folded upward. The two end portions 92Ae2 are connected to the upper basket 36 by the connecting means 102A.

As shown in FIG. 7, the second set of fixed pulleys 86B includes a pair of fixed pulleys of the first fixed pulley 88B and the second fixed pulley 90B. Further, the second movable pulley device 94B includes the first movable pulley 96B and the second movable pulley 98B.

The second wire rope 92B is guided by the first movable pulley 96B (the sheave 961B) and folded downward, and the first end portion 92Be1 side is guided by the first fixed pulley 88B and folded upward, and the first end is folded. The portion 92Be1 is connected to the upper basket 36 by the connecting means 100B. Further, the second wire rope 92B is guided by the second movable pulley 98B (the sheave 981B) and folded downward, and the first end portion 92Be2 side is guided by the second fixed pulley 90B and folded upward. The two end portions 92Be2 are connected to the upper basket 36 by the connecting means 102B.

As shown in FIG. 8A, the four connecting means 100A, connecting means 102A, connecting means 100B, and connecting means 102B are provided at positions symmetrical with respect to the center of gravity C1 of the upper car 36 in a plan view. There is. That is, the first end portion 92Ae1 and the second end portion 92Ae2 of the first wire rope 92A, the first end portion 92Be1 and the second end portion 92Be2 of the second wire rope 92B are in plan view with respect to the center of gravity C1 of the upper basket 36. , Are connected at a point-symmetrical position.

As shown in FIG. 8B, the sheave 961A and the sheave 961B have a common shaft 963, and the sheave 981A and the sheave 981B have a common shaft 983. The shaft 963 is rotatably supported by the bearing member 962A of the first movable pulley 96A and the bearing member 962B of the first movable pulley 96B, and the shaft 983 is rotatably supported by the bearing member 982A and the second movable of the second movable pulley 98A. It is rotatably supported by the bearing member 982B of the pulley 98B.

As is clear from the above configuration, the first movable pulley device 94A and the second movable pulley device 94B function as connecting means for connecting the first wire rope 92A and the second wire rope 92B to the lower basket 38, respectively. .. Further, as shown in FIG. 8B, the first movable pulley 96A and the second movable pulley 96A constituting the first movable pulley device 94A, the second movable pulley 98A, and the first movable pulley 96B and the second movable pulley 96B constituting the second movable pulley device 94B. The four movable pulleys of the movable pulley 98B are provided at positions that are point-symmetrical with respect to the center of gravity C2 of the lower car 38 in a plan view.

Even in the jump suppression mechanism according to the second embodiment having the above configuration, when the counter weight 28 (FIG. 1) plunges into the counter weight shock absorber 30 due to some trouble, the upper car 36 is raised together with the outer car 24. And the lower car 38 try to jump up due to its inertia even after the outer car 24 suddenly stops, but the upper car 36 and the lower car 38 are connected by the first wire rope 92A and the second wire rope 92B. , Excessive jumping is suppressed.

At this time, the reaction of the upper car 36 and the lower car 38 pulling the first wire rope 92A and the second wire rope 92B to jump up causes tension to be generated in the first wire rope 92A and the second wire rope 92B, and the tension is generated. Then, the upper car 36 and the lower car 38 are pulled downward from each other.

In this case, the first end portion 92Ae1 and the second end portion 92Ae2 of the first wire rope 92A, the first end portion 92Be1 and the second end portion 92Be2 of the second wire rope 92B are the center of gravity C1 of the upper basket 36 in a plan view. With respect to the above, the upper car 36 is pulled downward at a position that is point-symmetrical. That is, in the second embodiment, the line of action of the resultant force of the tension generated in the first wire rope 92A constituting the cord-shaped means and the tension generated in the second wire rope 92B passes through the center of gravity C1 of the upper car 36.

Therefore, the posture of the upper car 36 hardly collapses due to being pulled downward by the tension generated in the first wire rope 92A and the second wire rope 92B, so that the upper car 36 tilts as in the first embodiment. Can be suppressed as much as possible, and damage to the guide shoes 56A, 56B, 58A, 58B (FIG. 1) is avoided as much as possible. In addition, it does not adversely affect the riding comfort during normal operation as much as possible.

Four first movable pulleys 96A, second movable pulleys 98A, and first, which are connecting means for connecting the first wire rope 92A and the second wire rope 92B to the lower cage 38 and directly pull the lower cage 38 downward. The movable pulley 96B and the second movable pulley 98B are provided at positions symmetrical with respect to the center of gravity C2 of the lower car 38 in a plan view. That is, the line of action of the resultant force of the tension generated in the first wire rope 92A and the tension generated in the second wire rope 92B is configured to pass through the center of gravity C2 of the lower car 38.

As a result, as in the case of the upper car 36 described above, the lower car 38 can be prevented from tilting as much as possible, and the guide shoes 60A, 60B, 62A, 62B (FIG. 1), which are guide devices, can be damaged. It is avoided as long as possible. In addition, it does not adversely affect the riding comfort during normal operation as much as possible.

<Embodiment 3>
In the first and second embodiments, the jumping suppression mechanism is configured by two wire ropes, but in the third embodiment, the jumping suppression mechanism is configured by a single (one) wire rope.
The double deck elevator according to the third embodiment has basically the same configuration as the first and second embodiments except that the jumping suppression mechanism is different. Therefore, the description of the common configuration of the car spacing adjustment mechanism and the like will be omitted, and the jumping suppression mechanism, which is a different part, will be mainly described below.

FIG. 9A is a view showing the upper car 36 and FIG. 9B is a view showing the lower car 38 in a plan view, and each is a view in which elements mainly related to the jump suppression mechanism are extracted and drawn. It is a figure drawn according to FIG. 8 (a) and FIG. 8 (b). FIG. 10 is a diagram showing an upper car 36, a lower car 38, and a jumping suppression mechanism in the direction of the arrow H in FIG. 9B. The direction of the arrow H is a direction orthogonal to the arrangement direction of the first fixed pulley 124, the first movable pulley 130, the second movable pulley 132, and the second fixed pulley 126 arranged in a straight line in a plan view. ..

In the jump suppression mechanism of the third embodiment, the fixed pulley device 122 is installed on the pedestal 120 provided in the same manner as the pedestal 82 of the third embodiment. The fixed pulley device 122 includes a first fixed pulley 124 and a second fixed pulley 126.

At the lower part of the lower car 38, a movable pulley device 128 that moves up and down together with the lower car 38 is installed. The movable pulley device 128 includes a first movable pulley 130 and a second movable pulley 132.
A single wire rope 134 is used as the cord-like means.

The wire rope 134 is guided by the first movable pulley 130 (the sheave 130a) and folded downward, and the first end 134e1 side is guided by the first fixed pulley 124 and folded upward, and the first end 134e1 is folded. Is connected to the upper car 36 by the connecting means 136. Further, the wire rope 134 is guided by the second movable pulley 132 (the sheave 132a) and folded downward, and the second end 134e2 side is guided by the second fixed pulley 126 and folded upward, and the second end is folded. The portion 134e2 is connected to the upper basket 36 by the connecting means 138.

As shown in FIGS. 9 and 10, in the wire rope 134, between the first fixed pulley 124 and the first connecting means 136, between the first fixed pulley 124 and the first movable pulley 130, the second fixed pulley 126 and the first. Both the two movable pulleys 132 and the second fixed pulley 126 and the second connecting means 138 are stretched in the vertical direction.

As shown in FIG. 9A, the first connecting means 136 and the second connecting means 138 are provided at positions symmetrical with respect to the center of gravity C1 of the upper car 36 in a plan view. That is, the first end portion 134e1 and the second end portion 134e2 of the wire rope 134 are connected at a position symmetrical with respect to the center of gravity C1 of the upper car 36 in a plan view.

As is clear from the above configuration, the first movable pulley 130 and the second movable pulley 132 function as connecting means for connecting the wire rope 134 to the lower car 38. Further, as shown in FIG. 9B, the first movable pulley 130 and the second movable pulley 132 are provided at positions symmetrical with respect to the center of gravity C2 of the lower car 38 in a plan view.

Even in the jump suppression mechanism according to the third embodiment having the above configuration, when the counterweight 28 (FIG. 1) plunges into the counterweight shock absorber 30 due to some trouble, the upper car 36 rises together with the outer car 24. And the lower car 38 try to jump up due to its inertia even after the outer car 24 suddenly stops, but since the upper car 36 and the lower car 38 are connected by the wire rope 134, excessive jumping is suppressed. ..

At this time, the reaction of the upper car 36 and the lower car 38 pulling the wire rope 134 causes tension in the wire rope 134, and the tension causes the upper car 36 and the lower car 38 to be pulled downward from each other.

In this case, the first end portion 134e1 and the second end portion 134e2 of the wire rope 134 pull the upper car 36 downward at a position symmetrical with respect to the center of gravity C1 of the upper car 36 in a plan view. That is, the line of action of the resultant force of tension generated at both ends of the wire rope 134, which is a cord-like means, passes through the center of gravity C1 of the upper car 36.

Therefore, the posture of the upper car 36 hardly collapses due to being pulled downward by the tension generated in the wire rope 134, so that the upper car 36 can be tilted as much as possible as in the first and second embodiments. It can be suppressed and damage to the guide shoes 56A, 56B, 58A, 58B (FIG. 1) is avoided as much as possible. In addition, it does not adversely affect the riding comfort during normal operation as much as possible.

The two first movable pulleys 130 and the second movable pulley 132, which are connecting means for connecting the wire rope 134 to the lower car 38 and directly pull the lower car 38 downward, are the center of gravity of the lower car 38 in a plan view. It is provided at a position that is point-symmetrical with respect to C2. That is, in the wire rope 134, the line of action of the resultant force of two tensions, the tension generated between the first movable pulley 130 and the first fixed pulley 124 and the tension generated between the second movable pulley 132 and the second fixed pulley 126. , It is configured to pass through the center of gravity C2 of the lower basket 38.

As a result, also in the third embodiment, as in the case of the upper car 36 described above, the lower car 38 can be suppressed from tilting as much as possible, and the guide shoes 60A, 60B, 62A, 62B (FIG. 1) which are guide devices. ) Damage is avoided as much as possible. In addition, it does not adversely affect the riding comfort during normal operation as much as possible.

Although the double deck elevator according to the present invention has been described above based on the embodiment, the present invention is not limited to the above-described embodiment, and for example, the following embodiment may be used.
(1) In the above embodiment, the wire rope 52 is used as the interval adjusting cord for suspending the upper cage 36 and the lower cage 38 in the outer cage 24 for adjusting the cage spacing. Is not limited to a wire rope, and for example, a rubber belt having a core wire such as a steel cord or a belt made of carbon fiber may be used.
(2) In the above embodiment, wire ropes 74,76 (Embodiment 1), wire ropes 92A, 92B (Embodiment 2), and wire rope 134 (Embodiment 3) are used as the cords constituting the jump-up suppressing mechanism. However, the rope is not limited to the wire rope, and for example, a rubber belt with a core wire such as a steel cord or a belt made of carbon fiber may be used.

In the double deck elevator according to the present invention, for example, the upper car is hung on one end side of the cord-like object hung on the drive sheave, and the lower car is hung on the other end side to adjust the distance between the upper car and the lower car. It can be suitably used for a double deck elevator.

10 Double Deck Elevator 24 Outer Basket 36 Upper Basket 38 Lower Basket 52 Wire Rope 66, 84, 122 Fixed Slipper Device 72 Rope-like Means 92A 1st Wire Rope 92B 2nd Wire Rope 134 Wire Rope

Claims (5)

The upper car has an upper car and a lower car inside the outer car that goes up and down in the hoistway, and the upper car is hung on one end side of the interval adjustment cord for adjusting the interval of the car, which is hung on the drive sheave and folded back. A double-deck elevator that includes a structure in which the lower car is suspended on the other end side and has a jump-up suppressing mechanism for the upper car and the lower car.
The jump suppression mechanism is
The fixed pulley device installed in the outer car part below the lower car,
A cord-like means that is guided by the fixed pulley device and is folded upward to connect the upper car and the lower car.
Equipped with
The tension generated in the cord-like means pulls the upper car and the lower car downward to each other, and the line of action of the resultant force of the tension acting on the upper car passes through the center of gravity of the upper car in a plan view. A double-deck elevator characterized in that the line of action of the resultant force of tension acting on the lower car passes through the center of gravity of the lower car in a plan view. The fixed pulley device includes a first fixed pulley and a second fixed pulley.
The cord-like means is guided by the first fixed pulley and folded upward, and the first end portion is connected to the upper cage and the second end portion is connected to the lower cage. , Guided by the second fixed pulley, folded upward, the first end is connected to the upper car, and the second end is connected to the lower car.
The first end of the first cord and the first end of the second cord are connected at a position symmetrical with respect to the center of gravity of the upper car in a plan view.
The second end of the first cord and the second end of the second cord are connected at a position symmetrical with respect to the center of gravity of the lower car in a plan view. The double deck elevator according to claim 1. It has a first movable pulley device and a second movable pulley device that are installed at the lower part of the lower car and move up and down together with the lower car.
The fixed pulley device includes a first set of fixed pulleys consisting of a pair of fixed pulleys and a second set of fixed pulleys consisting of a pair of fixed pulleys.
The cord-like means comprises a first cord-like object and a second cord-like object.
The first cord-like object is guided by the first movable pulley device and folded downward, and the first end side is guided by one of the fixed pulleys of the first set of fixed pulleys and folded upward. The first end is connected to the upper car, the second end side is guided by the other fixed pulley and folded upward, and the second end is connected to the upper car.
The second cord-like object is guided by the second movable pulley device and folded downward, and the first end side is guided by one of the fixed pulleys of the second set of fixed pulleys and folded upward. The first end is connected to the upper car, the second end side is guided by the other fixed pulley and folded upward, and the second end is connected to the upper car.
The first end and the second end of the first cord, and the first end and the second end of the second cord are related to the center of gravity of the upper car in a plan view. , Are connected at point-symmetrical positions,
In the first movable pulley device and the second movable pulley device, the line of action of the resultant force of tension generated in the cord-like object guided by each of the two movable pulley devices and folded back is the lower side in a plan view. The double deck elevator according to claim 1, wherein the elevator is installed at a position passing through the center of gravity of the car. It has a movable pulley device that is installed at the bottom of the lower car and moves up and down with the lower car.
The fixed pulley device includes a first fixed pulley and a second fixed pulley.
The cord-like means consists of a single cord-like object.
A part of the cord-like object is guided by the movable pulley device and folded downward, and is connected to the lower basket via the movable pulley device.
The first end side guided by the movable pulley device and folded downward is guided by the first fixed pulley and folded upward, and the first end is connected to the upper car and the second end. The part side is guided by the second fixed pulley and folded upward, and the second end portion is connected to the upper car.
The first end portion and the second end portion of the cord-like object are connected at a position symmetrical with respect to the center of gravity of the upper car in a plan view.
The movable pulley device is installed at a position where the line of action of the resultant force of tension generated in the folded both cord-like objects guided by the movable pulley device passes through the center of gravity of the lower car in a plan view. The double deck elevator according to claim 1. The movable pulley device includes a first movable pulley and a second movable pulley.
The single cord-like object is hung on the first movable pulley and the second movable pulley, the first end side is the first movable pulley, and the second end side is the second end side. The second movable pulley is folded downwards,
The double deck elevator according to claim 4, wherein the first movable pulley and the second movable pulley are installed at positions symmetrical with respect to the center of gravity of the lower car in a plan view.

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