KR101016822B1 - Elevator device - Google Patents

Abstract

An elevator car is installed in the hoistway so as to be able to move up and down. The car is suspended by a main rope body having a first main rope and a second main rope. Upper ends of each of the first and second main ropes are fixed to an upper part of the hoistway. The car is wound with a pair of car hanging pulleys for guiding the first and second main ropes from each upper end in the horizontal direction, respectively, and each of the first and second main ropes from each car hanging pulley. A drive device having a true drive sheave and a pair of winding pulleys for guiding the first and second main ropes from the drive sheave to the lower side of the car, respectively, are provided. The drive sheave is rotated about an axis of rotation arranged along the vertical direction.

Description

Elevator device {ELEVATOR DEVICE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-propelled elevator device for elevating the inside of a car hoistway equipped with a drive device.

Background Art Conventionally, self-propelled elevator apparatuses in which a drive device is mounted on the lower portion of a car have been proposed in order to save space in a hoistway. In such a conventional elevator apparatus, the 1st sheave and the 2nd sheave which have a rotating shaft parallel to each other are provided in the lower part of the cage | basket | car. The axis of rotation of each sheave is arranged horizontally, respectively. The car is suspended by a first rope and a second rope which are respectively wound on each sheave successively. One side of each sheave is rotated by the driving force of the driving device. The car moves up and down inside the hoistway by rotating the sheave by the driving force of the drive device (see Patent Document 1).

Patent Document 1: Japanese Patent Application Laid-Open No. 10-273274

Problems to be Solved by the Invention

However, since the rotating shaft of the sheave rotated by the driving force of the drive device is horizontally arranged, when the outer diameter of the drive device or the sheave becomes large, the dimension with respect to the height direction of the whole car becomes large. As a result, it becomes difficult to achieve space saving of the hoistway, and the elevator apparatus becomes larger.

This invention is made | formed in order to solve the above subjects, and an object of this invention is to obtain the elevator apparatus which can aim at space saving of a hoistway.

Means for solving the problem

An elevator apparatus according to the present invention includes a car and a first main rope and a second main rope capable of elevating within a hoistway, wherein upper ends of each of the first and second main ropes are fixed to an upper part of the hoistway. Hanging main rope body, a pair of pulleys for hanging the car, which are installed in the car and guide the first and second main ropes from each upper end in the horizontal direction, and the first and the pulleys for each car hanging pulley. A pair of drive sheaves each of which is wound around the second main rope, the drive device provided in the car and the first and second main ropes provided in the car to guide the first and second main ropes from the drive sheave into the lower part of the car, respectively. And a driving suspending device for lifting and lowering the car by the rotation of the driving sheave. Is rotated about a rotation axis arranged along the vertical direction.

BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view which shows the elevator apparatus by Embodiment 1 of this invention.

FIG. 2 is a top view of the elevator apparatus of FIG. 1.

3 is a side view illustrating the elevator apparatus of FIG. 1.

FIG. 4 is an enlarged view showing a lower portion of the car of FIG. 3.

It is a top view which shows the elevator apparatus by Embodiment 2 of this invention.

6 is a side view illustrating the elevator apparatus of FIG. 5.

BEST MODE FOR CARRYING OUT THE INVENTION [

EMBODIMENT OF THE INVENTION Hereinafter, preferred embodiment of this invention is described with reference to drawings.

Embodiment 1.

BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view which shows the elevator apparatus by Embodiment 1 of this invention. 2 is a top view which shows the elevator apparatus of FIG. In the figure, a pair of guide rails 2 and 3 are provided in the hoistway 1 (Fig. 2). The car 4 is arrange | positioned up and down between each guide rail 2,3.

The car 4 is suspended in the hoistway 1 by a main rope body 7 having a plurality of first main ropes 5 and a plurality of second main ropes 6. The upper end part 5a of each 1st main rope 5 and the upper end part 6a of each 2nd main rope 6 are respectively fixed to the upper part of the hoistway 1. As shown in FIG. Moreover, the lower end part 5b of each 1st main rope 5 and the lower end part 6b of each 2nd main rope 6 are lowered to the lower part of the cage | basket | car 4, respectively. In addition, in the figure, for simplicity, the 1st and 2nd main ropes 5 and 6 are shown one by one.

In the center of the lower part of the cage | basket | car 4, the hoisting machine (drive apparatus) 8 which produces the driving force which raises and lowers the cage | basket | car 4 is provided. The hoist 8 has a drive main body 9 including a motor, and a drive sheave 10 disposed below the drive main body 9 and rotated by a drive force of the drive main body 9. The drive sheave 10 is rotated about a rotation axis arranged along the vertical direction. That is, the hoist 8 is arrange | positioned horizontally. The hoisting machine 8 is a thin hoisting machine whose radial dimension is larger than the axial dimension.

On the lower edge of the car 4, a pair of car suspending pulleys 11, 12 for guiding the first and second main ropes 5, 6 from each of the upper ends 5a, 6a in the horizontal direction, respectively. And a pair of winding pulleys 13 and 14 for guiding the first and second main ropes 5 and 6 extending in the horizontal direction to the lower side of the car 2, respectively. The drive sheave 10 is wound around the first and second main ropes 5 and 6 from the pulleys 11 and 12 for hanging the car, respectively. Moreover, the 1st and 2nd main ropes 5 and 6 from the drive sheave 10 are guide | induced below the cage | basket | car 2 by the winding pulleys 13 and 14, respectively.

That is, each of the first main ropes 5 is wound from the upper end 5a in the order of one car suspension pulley 11, drive sheave 10 and one winding pulley 13, and the lower end 5b. Has come to. Moreover, each 2nd main rope 6 is wound from the upper end part 6a in order of the other car pulley 12, the drive sheave 10, and the other winding pulley 14 in order. 6b).

The pulleys 11 and 12 for hanging the car and the pulleys 13 and 14 for winding are respectively rotatable about a rotation axis arranged horizontally. In addition, the pulleys 11 and 12 for suspending the car are arranged symmetrically with respect to the axis of rotation of the drive sheave 10. Moreover, each winding pulley 13 and 14 is also arrange | positioned symmetrically with respect to the rotating shaft of the drive sheave 10 (FIG. 2). Thereby, the load which the rotation shaft of the drive sheave 10 receives from each 1st main rope 5, and the load which the rotation shaft of the drive sheave 10 receives from each 2nd main rope 6 cancel, and the winding machine 8 ) Can be miniaturized.

Moreover, in the vertical projection surface of the hoistway 1, two straight lines which connect each of the center of the pulley 11 for one car suspension and the center of the one pulley 13 for winding, and the axis of rotation of the drive sheave 10 are carried out. This angle is an acute angle. Moreover, in the vertical projection surface of the hoistway 1, 2 which connects each of the center of the other pulley 12 for pulleys and the center of the other winding pulley 14, and the axis of rotation of the drive sheave 10, respectively. The angle formed by the two straight lines is also an acute angle (FIG. 2). Thereby, the contact angle with respect to the drive sheave 10 of each of the 1st and 2nd main ropes 5 and 6 is ensured.

The first main rope 5 is suspended from the first weight 15, which is a tension means for applying tension to the first main rope 5. The first weight 15 is provided at the lower end 5b of the first main rope 5. Moreover, the 2nd weight 16 which is a tension means for giving tension to the 2nd main rope 6 is suspended by the 2nd main rope 6. The second weight 16 is provided at the lower end 6b of the second main rope 6. In this example, the first and second weights 15 and 16 are provided independently of each of the first and second main ropes 5 and 6.

3 is a side view illustrating the elevator apparatus of FIG. 1. 4 is an enlarged view which shows the lower part of the cage | basket | car 4 of FIG. As shown in the figure, the position of the up-down direction with respect to the cage | basket | car 4 of the pulley 11 for one car suspension and the pulley 13 for winding is the drive sheave 10 of the 1st main rope 5 The part wound around) is adjusted to be horizontal. That is, the cage hanging pulley 11 and the winding pulley 13 are arranged so that the height of the lower portion of the cage hanging pulley 11 and the height of the upper portion of the winding pulley 13 coincide with each other.

Moreover, the position of the up-down direction with respect to the cage | basket | car 4 of the other cage | basket hanging pulley 12 and the other winding pulley 14 is connected to the drive sheave 10 of the 2nd main rope 6. As shown in FIG. The wound is adjusted to be horizontal. That is, the cage hanging pulley 12 and the winding pulley 14 are arranged so that the height of the lower portion of the cage hanging pulley 12 and the height of the upper portion of the winding pulley 14 coincide with each other.

In addition, the driving suspending device 17 includes a main rope body 7, a hoisting machine 8, a pair of car pulleys 11 and 12, and a pair of winding pulleys 13 and 14. .

Next, the operation will be described. When raising the cage | basket | car 4, as shown in FIG. 2, the drive sheave 10 is made counterclockwise (1st and 1st to the drive sheave 10 side from the pulleys 11 and 12 for each cage | basket | car hanging). 2 Rotate the main rope (5, 6) in the pulling direction, A direction. Thereby, the 1st and 2nd main ropes 5 and 6 are moved to the drive sheave 10 from each cage pulley 11 and 12, respectively (that is, moved to B direction), and the drive sheave Each of the winding pulleys 13 and 14 is moved from (10) (ie, moved in the C direction). As a result, the car 4 rises.

When lowering the car 4, the drive sheave 10 is rotated in the opposite direction to the above. Thereby, the operation | movement in the opposite direction to the above is performed, and the cage | basket | car 4 descends.

Here, the drive torque Tq which the hoisting machine 8 produces in order to move the cage | basket | car 4 is represented by following formula (1).

Tq = (Wc + CAP) D... (One)

In addition, Wc is the mass of the cage | basket | car 4, CAP is the loading mass of the cage | basket | car 4, and D is the diameter of the drive sheave 10. As shown in FIG.

As can be seen from equation (1), when the mass Wc and the loading mass CAP of the car 4 become large, the drive torque Tq becomes large. In addition, since the horizontal pressing force is applied from the cage | basket | car 4 by the rotation of the drive sheave 10 to the guide rails 2 and 3, when the drive torque Tq becomes large, the cage | basket | car 4 and the guide rail will become large. The contact resistance with (2, 3) becomes large, and the running resistance of the cage | basket | car 4 becomes large. From the above, in Embodiment 1, it is preferable to set it as the elevator apparatus with a comparatively small loading amount of the cage | basket | car 4.

In such an elevator apparatus, the hoist 8 having the drive sheave 10 rotated about the rotation axis arrange | positioned along the perpendicular direction, and the 1st and 2nd main ropes 5 and 6 from each upper end part 5a and 6a. ) And the first and second main ropes (5) wound around the drive sheave 10 from a pair of cage hanging pulleys 11 and 12 and each cage hanging pulley 11 and 12 for guiding) in the horizontal direction. , The pair of winding pulleys 13 and 14, which guide 6 to the lower side of the car 4, are provided in the car 4, respectively, so that the dimensions of the hoistway 1 are maintained in the horizontal direction. The drive sheave 10 can be arrange | positioned horizontally with respect to the cage | basket | car 4 at the same time, and the dimension with respect to the height direction of the cage | basket | car 4 whole can also be made small. Thereby, space saving of the hoistway 1 can be aimed at.

Moreover, each car pulley 11 and 12 is symmetrically arrange | positioned with respect to the rotation axis of the drive sheave 10, and each winding pulley 13 and 14 is also arrange | positioned symmetrically with respect to the rotation axis of the drive sheave 10. Moreover, as shown in FIG. Since the rotation shaft of the drive sheave 10 cancels the load which each of the 1st and 2nd main ropes 5 and 6 receives, respectively. As a result, the load on the rotating shaft of the drive sheave 10 can be reduced, and the size of the hoisting machine 8 can be reduced.

In addition, since the tension is applied to the first and second main ropes 5 and 6 by the first and second weights 15 and 16, the drive sheave 10 and the pulleys 11 and 12 for hanging the car. ) And the first and second main ropes 5 and 6 from each of the winding pulleys 13 and 14 can be prevented from shifting. Moreover, the drive sheave 10 can be prevented from slipping against the first and second main ropes 5 and 6, and the driving force of the hoisting machine 8 is applied to the first and second main ropes 5 and 6, respectively. It can be delivered efficiently.

Further, since the first and second weights 15 and 16 are suspended from the first and second main ropes 5 and 6, tension can be applied to the first and second main ropes 5 and 6 with a simple configuration. Can be.

In addition, since the 1st and 2nd weights 15 and 16 are provided independently in each lower end part 5b and 6b of the 1st and 2nd main ropes 5 and 6, for example, each main rope 5, Even in the case where there is a difference in the extension of 6), tension can be applied to each of the main ropes 5 and 6 independently, so that deflection occurs in each tension of the first and second main ropes 5 and 6. You can prevent it.

Moreover, since the hoist 8 is provided in the lower part of the cage | basket | car 4, the overhead dimension of the hoistway 1 can be made small.

In the above example, although the tension is applied to each of the first and second main ropes 5 and 6 by the independent first and second weights 15 and 16, the first and second weights are provided. Tension may be provided to each of the first and second main ropes 5 and 6 by a common weight (tension means) to which the main ropes 5 and 6 are connected. Moreover, the tension | tensile_strength to each of the 1st and 2nd main ropes 5 and 6 by pulling each main rope 5 and 6 with the elastic body (tension means), such as a spring installed in the hoistway 1, for example. May be given.

Embodiment 2.

In the above example, the car 4 is lifted by one drive hanging device 17. However, the car 4 may be lifted by a pair of drive hanging devices. .

That is, FIG. 5 is a top view which shows the elevator apparatus by Embodiment 2 of this invention. 6 is a side view which shows the elevator apparatus of FIG. In the figure, a pair of drive suspending devices 17 and 21 are provided in the hoistway 1. The car 4 is lifted up and down in the hoistway 1 by the drive suspending devices 17 and 21 in the hoistway 1. One drive suspending device 17 has the same configuration as the drive suspending device 17 of the first embodiment.

The other drive suspension device 21 is the same as the main rope body 7 of the first embodiment, the hoisting machine 8, the pulleys 11 and 12 for each car suspension and the pulleys 13 and 14 for each winding. It has a main rope body 7 ', a traction machine (driving device) 8', a pair of car pulleys 11 'and 12', and a pair of winding pulleys 13 'and 14'. . The hoist 8 ', the pulleys 11' and 12 'for hanging the car, and the pulleys 13' and 14 'for the winding are provided on the upper part of the car 4.

The first and second main ropes 5 ', 6' of the main rope body 7 'are disposed in the hoistway 1, avoiding the first and second main ropes 5, 6. Each upper end 5'a, 6'a of the first and second main ropes 5 ', 6' is fixed to the upper part of the hoistway 1, and the first and second main ropes 5 ', 6' are fixed. Each lower end part 5'b, 6'b of () is lowered below the cage | basket | car 4.

The hoist 8 'is disposed at the center of the upper part of the car 4. The hoist 8 'has a drive body 9' and a drive sheave 10 'which is disposed above the drive body 9' and rotated by a drive force of the drive body 9 '. The drive sheave 10 'is rotated about an axis of rotation arranged along the vertical direction. In addition, the drive sheave 10 'is rotated in the opposite direction to the rotation direction of the drive sheave 10 when the car 4 is lifted.

Each car hanging pulley 11 ', 12' and each winding pulley 13 ', 14' are arrange | positioned at the upper edge of the car 4, respectively. In addition, the pulleys 11 'and 12' for each car suspension are arranged symmetrically with respect to the axis of rotation of the drive sheave 10 '. Moreover, it arrange | positions symmetrically with respect to the rotating shaft of each winding pulley 13 ', 14', and the drive sheave 10 '(FIG. 5). Thereby, the load which the rotation shaft of the drive sheave 10 'receives from each 1st main rope 5', and the load which the rotation shaft of the drive sheave 10 'receives from each 2nd main rope 6' cancel out. As a result, the size of the hoist 8 'can be reduced. Each rotating shaft of each car pulley 11 ', 12' and each winding pulley 13 ', 14' is arranged horizontally.

Each first main rope 5 'is wound from the upper end 5'a in the order of one car pulley 11', drive sheave 10 ', and one winding pulley 13'. The lower end 5'b is reached. Moreover, each 2nd main rope 6 'of the other end pulley 12', the drive sheave 10 ', and the other winding pulley 14' of the other end of the car 6'a are different. It is wound in order and reaches the lower end 6'b.

The direction in which the first main rope 5 'is hooked from the cage hanging pulley 11' to the outer periphery of the drive sheave 10 'and the first main rope 5 from the cage hanging pulley 11 The directions caught on the outer circumferential portion of the drive sheave 10 are opposite to each other. Moreover, the direction in which the 2nd main rope 6 'hangs on the outer peripheral part of the drive sheave 10' from the cage hanging pulley 12 ', and the 2nd main rope 6 pulley 12 for the cage hanging ), The directions wound around the outer circumferential portion of the drive sheave 10 are reverse to each other.

In addition, in this example, the cage hanging pulley 11 and the winding pulley 13 are in the vertical projection surface of the hoistway 1, so that one cage hanging pulley 11 'and one winding pulley 13 are provided. It is arranged between '). Moreover, the cage pulley 12 and the winding pulley 14 are in the vertical projection surface of the hoistway 1, so that the other pulley 12 'and the other pulley 14' are different. It is arranged between).

A first weight (tension means) 15 'for tensioning the first main rope 5' is suspended on the lower end 5'b of the first main rope 5 '. At the lower end 6'b of the second main rope 6 ', a second weight (tension means) 16' for tensioning the second main rope 6 'is suspended.

In addition, also in the other drive suspension device 21, the pulley 11 'and one side of the pulley 11' for one side of the cage so that the portion wound on the drive sheave 10 'of the first main rope 5' becomes horizontal. The up-down position of the pulley 13 'for the car 4 is adjusted, and the portion wound around the drive sheave 10' of the second main rope 6 'becomes horizontal. The position of the up-down direction with respect to the cage | basket | car 4 of the cage | basket hanging pulley 12 'and the other winding pulley 14' is adjusted (FIG. 6).

Next, the operation will be described. When raising the cage | basket | car 4, as shown in FIG. 5, while rotating the drive sheave 10 of one drive suspension device 17 counterclockwise (A direction), the other drive is performed. The drive sheave 10 'of the hanging device 21 is rotated in the clockwise direction (that is, in the direction opposite to the rotation direction of the drive sheave 10, A' direction).

By rotation of the drive sheave 10, the first and second main ropes 5, 6 are respectively moved from the car suspending pulleys 11 and 12 to the drive sheave 10 (i.e., in the B direction). Moved), and from the drive sheave 10 to the respective winding pulleys 13 and 14, respectively (i.e., moved in the C direction). Moreover, by the rotation of the drive sheave 10 ', the 1st and 2nd main ropes 5' and 6 'are respectively moved from each car suspension pulley 11' and 12 'to the drive sheave 10', respectively. Are moved (i.e., moved in the B 'direction) to each winding pulley 13', 14 'from the drive sheave 10' (i.e., moved in the C 'direction). As a result, the car 4 rises.

When lowering the car 4, the drive sheaves 10 and 10 'are rotated in the opposite directions to the above. Thereby, the cage | basket | car 4 descends by performing the operation opposite to the above.

Here, since the car 4 is moved by the driving force of the two hoisting machines 8 and 8 ', the drive torque Tq' which each of the hoisting machines 8 and 8 'generate | occur | produces, following Formula (2). Can be represented.

Tq '= Tq / 2... (2)

In addition, since the drive sheaves 10 and 10 'rotate in opposite directions to each other, the drive torques Tq' of each hoist 8 and 8 'cancel each other out. This reduces the running resistance of the car 4. In addition, as the spacing between the hoisting machines 8 and 8 'with respect to the height direction of the cage | basket | car 4 becomes large, since the twist which arises in the cage | basket | car 4 becomes large, the space | interval between the hoisting machines 8 and 8' is increased. It is preferable to make it small.

In such an elevator apparatus, a pair of drive suspension devices 17 and 21 are provided in the hoistway 1, and the rotation direction of the drive sheave 10 of one drive suspension device 17, and the other, Since the rotation directions of the drive sheaves 10 'of the drive suspension device 21 are opposite to each other, the drive torques Tq' of the respective hoisting machines 8 and 8 'can be canceled from each other. Thereby, the running resistance of the cage | basket | car 4 can be reduced. In addition, since the drive torque of the hoisting machines 8 and 8 'is reduced by half, the miniaturization of the hoisting machines 8 and 8' can be further reduced, and the space saving of the hoistway 1 can be further achieved.

In addition, in the above example, although the hoisting machine 8 is installed in the lower part of the cage | basket | car 4, and the hoisting machine 8 'is installed in the upper part of the cage | basket | car 4, the upper and lower part of the cage | basket | car 4 The winding machines 8 and 8 'may be collected and installed in either side. In this case, the pulleys 11, 12, 11 ′, 12 ′ and the pulleys 13, 14, 13 ′, 14 ′ for each car suspension are also placed on either of the upper and lower portions of the car 4. It is collected and installed.

In the above example, the tension is applied to each of the first and second main ropes 5 'and 6' by the first and second weights 15 'and 16' independent of each other. Tension may be applied to each of the first and second main ropes 5 'and 6' by a common weight (tension means) to which the first and second main ropes 5 'and 6' are connected. . Moreover, the 1st and 2nd main rope 5 ', 6' is pulled by pulling each main rope 5 ', 6' with elastic bodies (tension means), such as a spring installed in the hoistway 1, for example. Tension may be applied to each of the?

As described above, the present invention can be used for a self-propelled elevator apparatus for elevating the inside of a car hoistway equipped with a drive device.

Claims (6)

Elevator car that can be lifted in the hoistway and A main rope body including a first main rope and a second main rope, wherein upper ends of each of the first and second main ropes are fixed to an upper portion of the hoistway, and a main rope body for hanging the car; A pair of car suspension pulleys for guiding the first and second main ropes from the upper end, respectively, in a horizontal direction, and each of the first and second main ropes from each car suspension pulley A pair including a wound drive sheave, a drive device provided in the car, and a pair provided in the car to guide the first and second main ropes from the drive sheave to the lower side of the car, respectively. And a pair of driving suspending devices, each having a pulley for winding and lifting the car by the rotation of the driving sheave. And, The drive sheave is rotated about a rotation axis arranged in the vertical direction, The rotation direction of the said drive sheave of one said drive suspension apparatus, and the rotation direction of the said drive sheave of the other said drive suspension apparatus are mutually opposite directions, The elevator apparatus characterized by the above-mentioned. The method according to claim 1, And the pair of pulleys for hanging the car are arranged symmetrically with respect to the rotational axis of the drive sheave, and the pair of winding pulleys are arranged symmetrically with respect to the rotational axis of the drive sheave. The method according to claim 1, The first and second main ropes are provided with tension means for imparting tension to each of the first and second main ropes. The method of claim 3, And said tension means is a weight suspended from said first and second main ropes. The method according to claim 4, The weight device is provided in the lower end of each of the first and second main rope, the elevator apparatus, characterized in that. delete

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