KR20070069150A - Elevator device - Google Patents

Abstract

An elevator device has a damping device mounted on a lower part of the vertically moving body that is lifted and lowered in a hoistway, and the damping device damps an impact of a collision of the vertically moving body against a lower part of the hoistway. A part of the damping device is projected below from the lower end of the vertically moving body, and the part is greater in length than the length of a stroke of the damping device. The remaining portion of the damping body is placed within the range of the vertical dimension of the vertical moving body.

Description

Elevator device {ELEVATOR DEVICE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator apparatus having a shock absorber for alleviating the impact of a collision on a hoistway of a hoisting body such as a car and a counterweight.

In the conventional elevator apparatus, the car buffer device is provided in the lower part of the hoistway, and the counterweight shock absorber is attached to the lower part of a counterweight (for example, refer patent document 1).

Patent Document 1: Publication No. 59-192085

In the conventional elevator apparatus as described above, even when the counterweight shock absorber is mounted on the counterweight, even when the counterweight shock absorber is installed at the lower part of the hoistway, the lifting weight range of the counterweight becomes the range obtained by subtracting the entire length of the counterweight shock absorber from the entire length of the hoistway. Therefore, the height dimension of the counterweight is limited by the length dimension of the counterweight shock absorber. In particular, in an elevator without a machine room in which equipment such as a drive device is arranged in the upper part of the hoistway, the height dimension of the counterweight is limited by the apparatus arranged in the upper part of the hoistway. Therefore, when it is necessary to make the counterweight heavy, for example, when the design part of a car is heavy, the counterweight had to increase the width dimension and the thickness dimension, and it was difficult to respond.

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 alleviate the restriction | limiting of the height dimension of a lifting body.

An elevator apparatus according to the present invention includes a lifting body which is lifted up and down in a hoistway, and a shock absorber mounted on a lower part of the lifting body. The shock absorber has a portion longer than its stroke length protruding downward from the bottom of the lifting body, The remaining part of the shock absorber is disposed in the range of the vertical dimension of the lifting body.

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

FIG. 2 is a front view illustrating the counterweight of FIG. 1.

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

It is a side view which shows the cage | basket | car of the elevator apparatus by Embodiment 3 of this invention.

5 is a plan view of the car of FIG.

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

Embodiment 1.

1 is a side view showing an elevator apparatus (elevator without a machine room) according to Embodiment 1 of the present invention. In the figure, the drive device (winder) 2 is provided in the upper part of the hoistway 1. As shown in FIG. The drive device 2 has a drive body 3 including a motor and a brake, and a drive sheave 4 which is rotated by the drive body 3. Moreover, the drive device 2 is arrange | positioned so that the rotating shaft of the drive sheave 4 may become vertical or substantially vertical. Moreover, as the drive device 2, a thin hoisting machine whose axial dimension is smaller than the dimension of the direction orthogonal to an axial direction is used.

The drive sheave 4 is wound with a plurality of ropes 5 (only one is shown in the figure). The car 6 which is a lifting body is connected to the 1st edge part of the rope 5. A balancing weight 7 which is a lifting body is connected to the second end of the rope 5. The car 6 and the counterweight 7 are suspended in the hoistway 1 by the rope 5 in a 1: 1 roping manner, and are lifted up and down the hoistway 1 by the driving force of the drive device 2.

In the hoistway 1, a pair of car guide rails 8 for guiding the lifting and lowering of the car 6 and a pair of counterweight guide rails 9 for guiding the lifting and lowering of the counterweight 7 are provided. have. When the counterweight 7 is located at the same height as the car 6, it is disposed behind the car 6 so as to face the rear surface of the car 6.

In the upper part of the hoistway 1, the cage | basket | car side guide pulley 10 which guides the rope 5 from the drive sheave 4 to the cage | basket | car 6, and the rope 5 from the drive sheave 4 to the counterweight 7 are carried out. The balance estimation guide pulley 11 which guides () is arrange | positioned. The guide pulleys 10 and 11 are arrange | positioned so that those rotating shafts may be horizontal. Moreover, the hoistway upper apparatuses, such as the drive device 2 and the guide pulleys 10 and 11, are supported by the common upper support beams (not shown). The upper support beams are supported by at least one of the upper part of the car guide rail 8 and the counterweight guide rail 9 or a fixing part of the building.

In the lower part (pit) of the hoistway 1, the car shock absorber 12 which relieves the impact of the collision of the cage | basket | car 6 to the lower part of the hoistway 1 is provided. In the lower part of the counterweight 7, the counterweight shock absorber 13 which mounts the impact of the collision of the counterweight 7 to the lower part of the hoistway 1 is mounted.

FIG. 2 is a front view of the counterweight 7 of FIG. 1. The counterweight shock absorber 13 has first and second counterweight shock absorbers 14 and 15 arranged in parallel with each other so as to buffer at the same time. The first and second counterweight buffers 14 and 15 are buffers of the same capacity and stroke length. In addition, the 1st and 2nd counterweight buffers 14 and 15 are arrange | positioned symmetrically with respect to the centerline of the width direction of the counterweight 7.

A guide rail pedestal 16 is fixed to the lower part of the hoistway 1. The lower end of the counterweight guide rail 9 is fixed on the guide rail base 16. The guide rail base 16 also serves as a shock absorber base receiving the counterweight shock absorbers 14 and 15.

The counterweight 7 is mounted on a weight frame 17, a plurality of weight plates 18 stacked in the weight frame 17, and a weight frame 17 to be engaged with the counterweight guide rail 9. It has a plurality of weight guide shoes 19. Counterweight shock absorbers 14 and 15 are mounted on the weight frame 17.

In addition, in each counterweight shock absorber 14, 15, the part of the stroke length or more protrudes downward from the lower end of the counterweight 7, and the remaining part is arrange | positioned within the range of the up-down direction dimension of the counterweight 7. In other words, the upper ends of the counterweight buffers 14 and 15 are located above the lower ends of the counterweights 7. In this example, the amount of protrusion from the lower end of the counterweight 7 of each counterweight shock absorber 14, 15 is approximately equal to the stroke length.

As the counterweight shock absorbers 14 and 15, for example, spring shock absorbers are used. In addition, the counterweight shock absorbers 14 and 15 are attached to the weight frame 17 so that the spring portion is located at the lower end portion.

In the elevator apparatus as described above, since the counterweight shock absorbers 14 and 15 are mounted on the counterweight 7, and a part of the counterweight shock absorbers 14 and 15 are arranged within the range of the vertical dimension of the counterweight 7, The limitation of the height dimension of the counterweight 7 can be relaxed, and the height dimension of the counterweight 7 can be enlarged. Thereby, when the balance weight 7 needs to be heavy, such as the case where the design component of the cage | basket | car 6 is heavy, it can respond easily.

In addition, since the weight of the counterweight buffer device 13 is added to the weight of the counterweight 7, the amount of the weight plate 18 can be reduced.

In addition, since two counterweight shock absorbers 14 and 15 are used, each counterweight shock absorber 14 and 15 can be miniaturized and the installation space of the counterweight shock absorbers 14 and 15 in the counterweight 7 can be reduced.

The counterweight shock absorbers 14 and 15 may be mounted on the counterweight 7 with the springs upward.

Embodiment 2.

3 is a front view which shows the counterweight 7 of the elevator apparatus by Embodiment 2 of this invention. In the figure, the counterweight shock absorber 13 has first and second counterweight shock absorbers 21 and 22 arranged in parallel with each other so as to buffer at the same time. The first and second counterweight shock absorbers 21 and 22 are shock absorbers of the same capacity and stroke length. Moreover, the 1st and 2nd counterweight buffers 21 and 22 are arrange | positioned symmetrically with respect to the centerline of the width direction of the counterweight 7.

Moreover, in each counterweight shock absorber 21 and 22, the part more than the stroke length S protrudes from the lower end of the counterweight 7, and the remaining part is arrange | positioned within the range of the up-down dimension of the counterweight 7. . In this example, the amount of protrusion from the lower end of the counterweight 7 of each counterweight shock absorber 21, 22 is approximately equal to the stroke length S. FIG.

As the counterweight shock absorbers 21 and 22, for example, hydraulic shock absorbers are used. In addition, the counterweight shock absorbers 21 and 22 are attached to the weight frame 17 so as to be located above the plunger and the cylinder below. The other configuration is the same as that of the first embodiment.

In this way, even when the hydraulic shock absorber is used as the counterweight shock absorbers 21 and 22, a part of the counterweight shock absorbers 21 and 22 is disposed within the range of the vertical direction of the counterweight 7 so that the height of the counterweight 7 is increased. Can be alleviated and the height dimension of the counterweight 7 can be enlarged.

Moreover, in Embodiment 2, although the counterweight shock absorbers 21 and 22 were mounted in the counterweight 7, so that the plunger was located in the upper part and the cylinder was located in the lower part, the counterweight shock absorbers 21 and 22 were mounted in the counterweight 7 in the vertical direction. It may be attached to.

Embodiment 3.

Next, FIG. 4 is a side view which shows the cage | basket | car 6 of the elevator apparatus by Embodiment 3 of this invention, and FIG. 5 is a top view which shows the cage | basket | car 6 of FIG. In the figure, the car 6 has a car compartment 23 and a car compartment 24 supported by the car frame 23. The cage frame 23 has a pair of longitudinal columns arranged on the left and right sides of the cage chamber 24.

The first and second shock absorber mounts 25 and 26 are fixed to the vertical column of the cage 23. The first and second car shock absorbers 27 and 28 are attached to the first and second shock absorber mounts 25 and 26, respectively. The car shock absorber 29 is comprised by the 1st and 2nd car shock absorbers 27 and 28. As shown in FIG.

The 1st and 2nd cage buffers 27 and 28 are arrange | positioned in parallel so that buffering operation may be performed simultaneously. The first and second car shock absorbers 27 and 28 are shock absorbers having the same capacity and stroke length. In the vertical projection plane, the first and second car shock absorbers 27 and 28 are arranged symmetrically about the center of the car 6.

A guide rail base 30 is fixed to the lower part of the hoistway 1. The lower end of the cage guide rail 8 is fixed on the guide rail base 30. A pair of shock absorber pedestals 31 receiving the car shock absorbers 27 and 28 are fixed to the guide rail base 30.

Moreover, in each cage | basket shock absorber 27 and 28, the part more than the stroke length protrudes from the lower end of the cage | basket | car 6, and the remaining part is arrange | positioned within the range of the up-down direction dimension of the cage | basket | car 6. It is. In this example, the amount of protrusion from the lower end of the car 6 of the car shock absorbers 27 and 28 is approximately equal to the stroke length.

As the car shock absorbers 27 and 28, for example, a spring shock absorber is used. Moreover, the car shock absorbers 27 and 28 are attached to the shock absorber mounting bases 25 and 26 so that a spring part may be located in a lower end part.

In the above-described elevator apparatus, the car shock absorbers 27 and 28 are mounted on the car 6, and a part of the car shock absorbers 27 and 28 is within the range of the vertical dimension of the car 6. Since it is arrange | positioned, restriction | limiting of the height dimension of the cage | basket | car 6 can be alleviated, and the height dimension of the cage | basket | car 6 can be enlarged.

In the above example, two counterweight shock absorbers or two car shock absorbers were used, but one or three or more.

Moreover, this invention may be applied only to either one of a counterweight and a car, or may apply to both.

In addition, although the elevator apparatus of the 1: 1 roping system was shown in the said example, a roping system is not limited to this, For example, a 2: 1 roping system may be sufficient.

Moreover, in the said example, although the elevator apparatus arrange | positioned at the back of a cage | basket | car was added, this invention is applicable also to the elevator apparatus arrange | positioned beside the cage | basket | car.

Moreover, in the above example, although the elevator apparatus using one counterweight was shown, this invention is applicable also to the elevator apparatus using a some counterweight.

Claims (2)

A lifting body lifting up and down inside the hoistway, and A shock absorber mounted on a lower portion of the lifting body, The said shock absorber is an elevator apparatus in which the part more than the stroke length protrudes downward from the lower end of the said lifting body, and the remainder of the said shock absorber is arrange | positioned within the range of the up-down direction dimension of the said lifting body. The method of claim 1, The shock absorber has a plurality of shock absorbers arranged in parallel with each other so as to buffer at the same time.

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