JP2001240343A - Dumbwaiter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dumbwaiter capable of effectively carrying a load, saving an installation space, and reducing a cost. SOLUTION: One end of a main rope 26 stretched across a driving sheave 24 and a deflector wheel 25 installed in the upper part of a hoistway 21 is connected to a first car 22, the other end of the main rope 26 is connected to a second car 23, and the first car 22 and the second car 23 are connected to the main rope 26 so that when one car is landed on the uppermost floor, the other car is landed on the lowermost floor.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dam weight for carrying luggage and the like.

[0002]

2. Description of the Related Art FIGS. 5 and 6 are a longitudinal sectional view and a transverse sectional view, respectively, schematically showing the structure of a conventional two-stop dam weighter. In FIGS. 5 and 6, the dam waiter has a main rope in which a driving sheave 4 and a deflecting wheel 5 are installed above the hoistway 1, and a car 2 and a counterweight 3 are laid over the driving sheave 4 and the deflecting wheel 5. 6 and is suspended in a hanging manner. Then, guide rails 7 and 8 for the car and the counterweight for guiding the raising and lowering operation of the car 2 and the counterweight 3 are vertically extended on the inner wall surface of the hoistway 1, and the shock absorber 9 for the car and the counterweight 9. A control panel 11 having a call button and a destination floor button (not shown) is disposed at each floor. Further, a motor 12 for driving the drive sheave 4
A control device 13 for controlling the drive of the motor 12 is provided above the hoistway 1.

In the conventional dam weight configured as described above, when a car call is generated by the call button of the operation panel 11 on the lower floor, the control device 13 drives the drive sheave 4 via the motor 12 to drive the car 2. Drive up and down to the car floor (lower floor). Then, after the luggage is loaded in the car 2, the destination floor button on the operation panel 11 on the lower floor is pushed to the destination floor (upper floor).
Is designated, the control device 13 drives the drive sheave 4 via the motor 12, and moves the car 2 up and down to the upper floor. Then, the load is carried out from the car 2 and the transport of the load is completed.

However, in this conventional dam weighter, when the car 2 is landing on the upper floor, the user on the lower floor calls the car 2 and waits for the arrival of the car 2 before using the car. Also, if a user on the upper floor is loading or unloading luggage, a user on the lower floor cannot use the dam waiter until the user on the upper floor finishes the work, and furthermore, the upper floor is lower than the lower floor. In the case of carrying luggage continuously, the car 2 is driven from the upper floor to the lower floor, after landing on the lower floor, the luggage is unloaded, and then the car 2 is driven from the lower floor to the upper floor to reach the upper floor. Unnecessary time until flooring occurs, and there is a problem that luggage cannot be transported efficiently.

[0005] In order to improve such a problem, an improvement measure of arranging two dam weighters in two rows is considered.
7 and 8 are a longitudinal sectional view and a transverse sectional view, respectively, schematically showing a dam weight as a conventional improvement, and FIG. 9 is a front view showing a dam weight as a conventional improvement. In FIG. 7, two cars and a counterweight are shown side by side for the convenience of explaining the structure. As shown in FIGS. 7 to 9, the dam weight as a remedy is
First and second cars 2a, 2b and first and second cars suspended in a hanging manner by first and second main ropes.
The counterweights 3a, 3b are arranged in two lines in the hoistway 1 so as to be able to move up and down. A first control device 13a, a first motor 12a, and a first drive sheave 4a for raising and lowering the first car 2a are provided above the hoistway 1.
And a first deflecting wheel 5a, and a second control device 13b, a second motor 12b, a second drive sheave 4b, and a second deflecting wheel for raising and lowering the second car 2b. 5b is provided. In the hoistway 1, first and second car guide rails 7a, 7b for vertically guiding the first and second cars 2a, 2b extend vertically. No balance weight 3a,
First and second counterweight guide rails 8a and 8b for guiding the lifting / lowering operation of 3b extend vertically. Also, the first and second car shock absorbers 9a, 9b
And first and second counterweight shock absorbers 10
a, 10 b are arranged at the bottom of the hoistway 1. Further, first and second operation panels 11 having a call button and a destination floor button (not shown) are provided on each floor.

[0006] In the conventional dam weighter configured as described above, when a car call is generated by the call button of the first operation panel 11a on the lower floor, the first control device 13 is activated.
a drives the first drive sheave 4a via the first motor 12a, and moves the first car 2a up and down to the car floor (lower floor). When the destination floor (upper floor) is designated by pressing the destination floor button of the first operation panel 11a on the lower floor after loading the luggage on the first car 2a, the first controller 1
3a is a first drive sheave 4a via a first motor 12a.
To drive the first car 2a up and down to the upper floor.
Then, the luggage is carried out from the first car 2a, and the transportation of the luggage is completed. In addition, the user can use the second car 2b separately from the first car 2a to carry the luggage in the same manner.

Therefore, if the first car 2a is on the upper floor and the second car 2b is on the lower floor, the user on the lower floor can use the second car 2b to load Can be transported to the upper floor, and it is no longer necessary to transport the luggage until the first car 2a on the upper floor arrives at the lower floor.
Further, even if a user on the upper floor loads and unloads luggage from the first car 2a, a user on the lower floor uses the second car 2b without waiting for the work on the upper floor to be completed. To carry luggage. Further, while the first car 2a loaded with luggage is being driven from the upper floor to the lower floor, the second car 2b is called to the upper floor, and then the first car 2a, which has landed on the lower floor, When unloading the luggage, the luggage is loaded on the second car 2b on the upper floor, and the first car 2a is loaded while the loaded second luggage car 2b is being driven from the upper floor to the lower floor. Is called an upper floor, so that empty time can be reduced and luggage can be continuously transported from an upper floor to a lower floor.

[0008]

Since the conventional dam weight as an improvement is constituted as described above, two sets of a car, a counterweight, a drive sheave, a deflector and the like are required. The elevator car is operated independently for raising and lowering, resulting in an increase in hoistway area, an increase in the number of parts, and an increase in power consumption, which makes it impossible to save space and reduce the installation area. There were challenges. In addition, since two cars are individually raised and lowered, if a car far from the car floor is called, the call response time from the car call to the landing on the car will be longer. There were also issues. This becomes remarkable as the number of floors increases, and is a factor that lowers work efficiency.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and two cars are suspended in a hanging manner by a main rope in a hanging manner, and two cars are driven up and down by one drive sheave. In this way, cargo can be transported efficiently, the hoistway area is reduced, the number of parts is reduced, and
It is an object of the present invention to provide a dam weighter which consumes less power and can save installation space and reduce cost. In addition, it recognizes the position of the two cars,
It is an object of the present invention to obtain a dam waiter that can reduce a call response time and save power by driving and controlling a drive sheave so that a car at a short distance from the car floor can be landed on the car floor.

[0010]

According to the present invention, there is provided a dam waiter, wherein one end of a main rope extended over a driving sheave and a deflector installed at an upper portion of a hoistway is connected to a first car. The other end of the cord is connected to a second car, and the drive sheave is driven to drive the first and second cars up and down in the hoistway. The car is connected to the main rope such that one of the cars lands on the top floor and the other lands on the bottom floor.

The main rope is fully wrapped around the drive sheave and the deflector sheave.

A car position detecting means for detecting the positions of the first and second cars and a position of the first and second cars are recognized from an output signal of the car position detecting means. When it occurs, a car near the car call floor is determined from the positions of the first and second cars, and the drive sheave is driven so that a car near the car call floor is landed on the car call floor. And a control device.

Further, when determining which car is closer to the car call floor, information on the distance between floors is used.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. Embodiment 1 FIG. 1 and 2 are a longitudinal sectional view and a transverse sectional view schematically showing a dam weighter according to the first embodiment of the present invention, and FIG. 3 is a front view showing the dam weighter according to the first embodiment of the present invention. In addition, in FIG. 1, the entrance of each floor is shown on the left and right for convenience of describing the structure.

Referring to FIGS. 1 to 3, a dam weight 20
Is a two-stop dam waiter, in which a drive sheave 24 and a deflecting wheel 25 are installed above the hoistway 21, and the first and second cars 22, 23 are driven by the driving sheave 24 and the deflecting wheel 2
The main rope 26 which is fully wrapped and rolled into the rope 5 is suspended in a hanging manner. The first and second cars 22 and 23 are connected by the main cable 26 such that one of the cars 22 and 23 is landed on the upper floor and the other is landed on the lower floor. Also, the first and second cages 22, 2
The first and second guide rails 27 and 28 for guiding the lifting operation of the hoistway 3 are vertically extended on the inner wall surface of the hoistway 21, and the first and second shock absorbers 29 and 30 are provided at the bottom of the hoistway 21. An operation panel 31 having a call button and a destination floor button (not shown) is disposed on each floor. Further, a motor 32 for driving the drive sheave 24 and this motor 32
Is disposed above the hoistway 21.

Next, the operation of the dam weighter 20 will be described. First, when the first car 22 is on the lower floor, the second car 23 is on the upper floor. Therefore, when the user transports luggage from the lower floor to the upper floor, the user opens the door of the first car 22 to load the luggage, closes the door, and then pushes the destination button (upper floor). Then, the control device 33 controls the first and second cars 22, 23.
After confirming that the door is closed, the drive sheave 24 is driven via the motor 32 to move the first car 22 up and down to the upper floor. Then, after the first car 22 has landed on the upper floor, the user on the upper floor opens the door of the first car 22 and unloads the luggage. At this time, since the second car 23 is landing on the lower floor, the user on the lower floor opens the door of the second car 23 and loads the luggage. This operation is repeated to carry the luggage continuously from the lower floor to the upper floor. Also, during this operation, when another user transports luggage from the upper floor to the lower floor, the other user arrives at the upper floor of the first and second cages 22 and 23, unloads the luggage and becomes empty. Luggage can be transported to the lower floor using a basket.

As described above, according to the first embodiment,
The first and second cages 22 and 23 are suspended by a main rope 26 in a hanging manner, and the first and second cages 24 are used to suspend the first and second cages 22 and 23.
Since the car 22 and 23 are operated to ascend and descend, the user can immediately use the car from the upper floor or the lower floor without calling for a car, and simultaneously use the car on the lower floor and the upper floor. In other words, the luggage can be efficiently transported by using the dam weight 20 to reduce idle time. In addition, there are two cars but only one set of other parts. Compared with the conventional dam weight shown in FIGS. 7 to 9, the number of components can be significantly reduced, the cost can be reduced, and the installation area can be reduced. Space saving is achieved. Further, two cars are connected to one motor 32 and the drive sheave 24.
, The two cars are separated by separate motors 3
As compared with the conventional dam weighter which is driven up and down by the drive sheave 2 and the drive sheave 24, useless car operation is eliminated, power consumption is reduced, and the power saving effect is large. In addition, main rope 26
Is fully wrapped around the drive sheave 24 and the deflecting sheave 25, so that a sufficient driving frictional force is ensured. For example, the first car 22 is loaded with luggage and the second car 23
Is empty, even if the weight balance between the first and second cages 22 and 23 is lost.
The cages 22 and 23 can be stably moved up and down.

Embodiment 2 FIG. In the first embodiment, 2
In the second embodiment, the present invention is applied to a dam waiter for multiple stops of three or more stops. FIG. 4 is a longitudinal sectional view schematically showing a dam weighter according to Embodiment 2 of the present invention. In addition, in FIG. 4, the entrance of each floor is shown on the left and right for convenience of explanation of the structure. In FIG. 4, in the dam weight 40, the first and second cars 22 and 23 are connected by the main cable 26 such that when one of the cars is landing on the top floor, the other is on the bottom floor. Have been. Also, the first and second position switch operation cams 36 and 37 are
And first and second position switches 38 and 39 are disposed on the inner wall surface of each floor of the hoistway 21. Then, the first position switch operation cam 36 operates the first position switch 38 when the first car 22 moves up and down, and the first position switch 38
The control unit 35 outputs a position signal of the car 22. Similarly, the second position switch operating cam 37 is connected to the second car 2
Activate the second position switch 39 at the time of lifting operation of 3,
The second position switch 39 outputs a position signal of the second car 23 to the control device 35. Here, the first and second position switch operation cams 36 and 37 and the first and second position switch
The car position detecting means is constituted by the position switches 37 and 38. The other configuration is the same as that of the first embodiment.

Next, the operation of the dam weighter 40 will be described. First and second position switches 38, 3
9, the first and second cages 22, 2
The stop position of No. 3 is written in the memory unit of the control device 35. The stored car stop positions are the first and second car stop positions.
Are sequentially updated based on the signals from the position switches 38 and 39. Then, when the user presses the call button of the operation panel 31 of a certain floor, the control device 35 specifies the floor where the car call has occurred, and stores the stored car of the first and second cars 22 and 23. From the stop position, a car at a short distance to the call generation floor is determined, and after recognizing that the car door is in a closed state, the car 32 is brought into contact with the call generation floor via the motor 32 so as to land on the call generation floor. The drive sheave 24 is driven. Then, after the car has landed, the user opens the door, loads the luggage, closes the door, and pushes the destination floor of the operation panel 31.
Then, the control device 35 drives the drive sheave 24 via the motor 32 so as to specify the destination floor and land the car on the call generation floor. The car that has landed on the destination floor is opened by the waiting user, and the luggage is unloaded.

According to the second embodiment, in addition to the effect of the first embodiment, since a car located at a short distance to a call generation floor is preferentially called, a call from a car call to a floor landing is called. The response time is shortened, the load can be efficiently transported, and the work efficiency can be improved. In addition, there is no needless lifting operation of the car, and a further power saving effect can be obtained.

Embodiment 3 In the third embodiment, the pulse transmitter is directly connected to the axis of the motor 32. The other configuration is the same as that of the second embodiment. In the third embodiment, in order to store the floor-to-floor distance in the memory unit of the control device 35, first, the car is directly driven from the lowest floor to the highest floor. At this time, the output signals from the first and second position switches 38 and 39 and the pulse signal of the pulse transmitter generated by driving the motor 32 are input to the CPU of the control device 35, and the floor distance Is processed by the CPU, and the obtained floor distance is stored in the memory unit.
Then, the CPU of the control device 35 determines the car located at a short distance to the call generation floor based on the information on the car stop position of the first and second cars 22 and 23 and the information on the floor distance stored in the memory unit. are doing. Other operations are the same as those in the second embodiment.

Not all floors are necessarily equal,
If the number of stop floors is large, if a car at a short distance to the call generation floor is determined based only on the information on the stop floor of the car, a car far from the call generation floor may be selected. According to the third embodiment, since the information on the distance between floors is used to determine the car at a short distance to the call generation floor, the determination of the car at a short distance to the call generation floor becomes accurate, and The call response time until landing on the car can be minimized.

Although Embodiments 2 and 3 do not discuss the occurrence of a new car call during the operation of the car, when a new car call in the same direction occurs during the operation of the car, The car may be controlled to land on the call generation floor. In this case, it is desirable to attach a destination tag (tag) to the luggage, because the luggage loaded in the car is mixed and unloading work becomes inconvenient.

[0024]

Since the present invention is configured as described above, it has the following effects.

According to the present invention, one end of the main rope hung over the drive sheave and the baffle installed above the hoistway is connected to the first car, and the other end of the main rope is connected to the second car. And the first sheave is driven by driving the drive sheave.
And a second car in which the first car and the second car are moved up and down in the hoistway, and the first and second cars are arranged so that when one of them is landed on the top floor, the other is landed on the bottom floor. Because it is connected to the main cable, the spare time is short, the number of components is significantly reduced, the power consumption is reduced, the luggage can be transported efficiently, the cost is reduced, and the installation area is saved. The desired dam weight is obtained.

Since the main rope is fully wrapped around the drive sheave and the deflecting sheave, a sufficient driving frictional force is secured, and the first and second cars can be stably moved up and down. it can.

A car position detecting means for detecting the positions of the first and second cars and a position of the first and second cars are recognized from an output signal of the car position detecting means, and a car call is made. When it occurs, a car near the car call floor is determined from the positions of the first and second cars, and the drive sheave is driven so that a car near the car call floor is landed on the car call floor. Control device, the call response time from car call to car landing can be shortened, work efficiency can be improved, and unnecessary elevator operation is eliminated, further power saving effect can be obtained. .

Further, since the information on the distance between floors is used in determining the car near the car floor, the determination of the car near the car floor is reliable.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view schematically showing a dam weighter according to Embodiment 1 of the present invention.

FIG. 2 is a cross-sectional view schematically showing a dam weighter according to Embodiment 1 of the present invention.

FIG. 3 is a front view showing the dam weighter according to the first embodiment of the present invention.

FIG. 4 is a longitudinal sectional view schematically showing a dam weighter according to Embodiment 2 of the present invention.

FIG. 5 is a longitudinal sectional view schematically showing a conventional dam weighter.

FIG. 6 is a cross-sectional view schematically showing a conventional dam weighter.

FIG. 7 is a longitudinal sectional view schematically showing another conventional damway.

FIG. 8 is a cross-sectional view schematically illustrating another conventional dam weighter.

FIG. 9 is a front view showing another conventional dam weighter.

[Explanation of symbols]

Reference Signs List 20 dam weighter, 21 hoistway, 22 first car, 23 second car, 24 drive sheave, 25 deflecting wheel, 26 main rope, 35 control device, 36 first position switch operation cam (car position detecting means) , 37 2nd position switch operating cam (car position detecting means), 38 1st
Position switch (car position detecting means), 39 second position switch (car position detecting means), 40 dam weighters.

Claims (4)

[Claims] 1. One end of a main rope hung over a drive sheave and a baffle installed on an upper portion of a hoistway is connected to a first car, and the other end of the main rope is connected to a second car. A dam weight for driving the first sheave and the second car up and down in the hoistway by driving the drive sheave, wherein one of the first and second cars is placed on a top floor. A dam waiter, which is connected to the main rope so that the other is landed on the lowest floor when the other. 2. The dam weight according to claim 1, wherein the main rope is fully wrapped around the drive sheave and a deflector sheave. 3. A car position detecting means for detecting the positions of the first and second cars, and a position of the first and second cars is recognized from an output signal of the car position detecting means. When it occurs, a car near the car call floor is determined from the positions of the first and second cars, and the drive sheave is driven so that a car near the car call floor is landed on the car call floor. The dam weighter according to claim 1 or 2, further comprising a control device that performs the control. 4. The method according to claim 1, further comprising the steps of:
4. The dam weighter according to claim 3, wherein information on floor distance is used.