WO2004065275A1 - Elevator equipment - Google Patents

Abstract

Elevator equipment capable of increasing the speed and lowering the noise of a machine room-less elevator with a roping of 1:1, storable even in a less space at the top part of a hoistway, and allowing a maintenance space for a hoist to be assured, wherein a hoist rope is formed of a flexible rope or a small diameter and highly strong steel rope to reduce the diameters of the hoist, sheaves, and return sheaves, the return sheaves are disposed parallel with the ceiling surface of the hoistway to lower the height dimension of the return sheave, and the return sheaves not parallel with the ceiling surface of the hoistway are disposed in a clearance between the wall of the hoistway and a car to bring the sheaves out of a specified clearance dimension at the top part of the hoistway for the car, whereby a space can be saved.

Description

 Description Elevator equipment Technical field

 The present invention relates to a layout technology for a machine room less elevator. Background art

 FIG. 10 is a diagram showing the winding at the top of a hoistway of a conventional machine room-less elevator shown in Japanese Patent Application Laid-Open No. 2000-2555953 (pages 7, 8 and FIGS. 15 and 16). A hoistway plan view showing the relationship between the upper yard car and the return car. Fig. 1.1 is a vertical sectional view of the hoistway. In the figure, a basket 3 suspended by a hoisting rope 15 wound around a sheave 4 a of a hoisting machine 4 at the top of a hoistway, and a counterweight 9 that moves up and down in opposition to the car are provided. 2: Elevator / Evening device with one bite and one bing. In this example, the hoisting machine 4, the sheave 4a, and the first return wheel 5 are arranged in parallel to the hoistway ceiling surface and returned vertically by the second return wheel 6, and are pivotally attached to the lower part of the car. The car 3 is hung on the hanging cars 18. On the other hand, the counterweight 9 returns the hoisting rope 15 from the sheave 4a vertically by the return wheel 7 on the counterweight side, and is wrapped around the suspension wheel 19 pivoted on the counterweight to suspend the counterweight. It has a configuration.

The reason why the hoist, the sheave, and the first return sheave are arranged parallel to the hoistway ceiling ¾ is to reduce the gap at the top of the car. However, since the hoisting machine is located on the hoistway ceiling, the operator is forced to work upward on the top of the cab ceiling during maintenance and inspection, increasing the work load. other Although there is a method of attaching a device for opening and closing the hoisting machine together with the mounting support frame downward for maintenance work as a means of the above, there is a problem that the cost increases. In the conventional machine room-less elevator, if the ratio is 1: 1 per bing, it is difficult to accommodate the hoisting machine and return wheel with a narrow top clearance, so the hoisting machine and return wheel are placed on the side of the car. Easy and small hoisting machine 2: One-by-one pinning is commonly used. In recent years, the development and commercialization of highly flexible ropes, small diameter and high-strength steel ropes have made it possible to reduce the diameter of hoists, sheaves, and return sheaves. When combined with, both the hoisting machine and the return wheel will have a high rotational speed and may generate noise. Disclosure of the invention

 The present invention has been made to solve such a problem, and it is an object of the present invention to obtain an elevator that minimizes the size of a hoistway as a one-to-one opening, and that also secures a maintenance space for a hoisting machine. The purpose is.

As means for solving the above-mentioned problems, there is a basket that moves up and down along a pair of guide rails provided in a hoistway, and a balance in which one end is hung on the car and the other end rises and falls along another guide rail. A hoisting machine having a hoisting rope wound around a weight and a sheave around which the hoisting rope is wound is used. The sheave is arranged not parallel to the hoistway ceiling surface, and a plurality of openings from the sheave to the car are parallel to the hoistway ceiling. The car is diverted to the center of gravity of the car by two or more of the first and second return wheels, and then returned vertically via the third return wheel, and the ropes are hung from the ropes to the car cleats. It is configured as follows. In the preceding paragraph, the first return wheel and the second return wheel are combinations having different diameters.

 Also, a car that moves up and down along a pair of guide rails provided in the hoistway: and a balancing rope in which one end is hung on the car and the other end is raised and lowered along another guide rail. And a hoist having a sheave on which the hoisting rope is wound. The hoisting machine is moved closer to the hoistway wall side at the upper part of the hoistway as a one-by-one bing elevator system. The sheaves are arranged not parallel to the hoistway ceiling surface, and the plurality of openings from the sheaves to the car are a first return wheel and a second return wheel parallel to the hoistway ceiling. The car is deflected in two directions, and the car is returned vertically by third and fourth return wheels for lowering the rope to two cleats on both sides of the car, and the car is hung.

 In the preceding paragraph, the hoisting machine, the sheave, and the return wheel are miniaturized, and a plurality of return wheels that are not parallel to the hoistway ceiling-parallel are arranged in a gap between the car and the hoistway wall.

 Further, in each of the above-described elevators, a rope having excellent flexibility or a small-diameter and high-strength steel rope is applied to the hoisting rope, and the hoisting machine, the sheave, and the return wheel are downsized. . BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a plan view of a hoistway top showing a first embodiment of the present invention.

FIG. 2 is a vertical sectional view of the hoistway of FIG.

FIG. 3 is a plan view of the top of the hoistway showing Embodiment 2 of the present invention.

FIG. 4 is a vertical sectional view of the hoistway of FIGS. 3 and 5.

FIG. 5 is a plan view of the top of the hoistway showing Embodiment 3 of the present invention.

FIG. 6 is a plan view of the top of the hoistway showing Embodiment 4 of the present invention.

FIG. 7 is a vertical sectional view of the hoistway of FIGS. 6 and 8. FIG. 8 is a plan view of the top of the hoistway showing Embodiment 5 of the present invention.

FIG. 9 is a plan view of the top of the hoistway showing Embodiment 6 of the present invention.

FIG. 10 is a vertical sectional view of the hoistway of FIG.

FIG. 11 is a plan view of the top of the hoistway showing a conventional machine room-less elevator. FIG. 12 is a vertical sectional view of the hoistway of FIG. BEST MODE FOR CARRYING OUT THE INVENTION

 Next, examples of the present invention will be described.

Example 1

FIG. 1 is a plan view showing the relationship between a hoist sheave at the top of a hoistway and a return wheel, which is Embodiment 1 of the present invention, and FIG. 2 is a longitudinal sectional view of the hoistway. In the figure, provided in the hoistway. Is Te pair of _ Guy .. rail 1 0 along ₂ with your 3 to dream I, the other end one end hooked to the car 3 is along the other guide Doreru 1 1 lift A hoisting machine having a hoisting rope 13 wound around a counterweight 9 to be wound and a sheave 4 having a sheave 4a around which the hoisting rope is wound. The hoisting machine 4 is arranged close to the hoistway wall above the hoistway, and the sheave 4a is arranged not parallel to the hoistway ceiling surface, and a plurality of sheaves 4a from the sheave 4a to the car are arranged. The rope 13 is divided into at least two parts, a first return wheel 5 and a second return wheel 6 parallel to the hoistway ceiling, and is diverted to the center of gravity of the car. The rope was returned, and the cage was hung with the mouth hooked to the cage clasp.

Therefore, according to this layout, it is possible to make 1: 1 roving even with a small clearance at the top of the hoistway, and even if the number of winding ropes is large, the number of the first return wheel and the second return wheel is two or more. The rope's fleet angle, that is, the angle at which the rope tries to come off the rope groove of the sheave or return wheel Can be kept small.

 Further, since the rope fleet angle can be reduced, uneven wear of the rope groove can be suppressed, noise can be reduced, and the life of the rope can be extended.

Example 2.

 FIG. 3 is a plan view corresponding to FIG. FIG. 4 is a vertical sectional view of the hoistway of FIG. That the first return wheel 5 is one and the second return wheel 6 and the third return wheel 6a are two, that is, the first to third return wheels are three in total; The other parts are the same as those described above, and the same reference numerals denote the same or corresponding elements, and a description thereof will not be repeated.

 Therefore, in addition to the effect of the preceding paragraph, the first return wheel 5 is one, and the second return wheel 6 and the third return wheel 6a are two combinations. Since the axle and the bearing beams of the return wheel 6 and the return wheel 6a do not interfere with each other, the distance between the return wheel and the upper and lower sides of the return wheel can be made closer, and the rope fleet angle can be made smaller. There is.

Embodiment 3.

5 is a plan view corresponding to FIG. 3 showing the third embodiment, and FIG. 4 is a vertical sectional view of the hoistway of FIG. In the second embodiment, the second return wheel 6 and the third return wheel 6b are combined with the first return wheel 5 in this embodiment. The diameter of the return wheel 5 is reduced so as to match the return angle to the center of gravity of the car, and the diameter of the second return wheel 6b is reduced by one instead of the two return wheels 6 and 6b. The diameter of the second return sheave 6b is selected so as to match the return angle of the sheave 4a and the return sheave 5, and the rope angle of each of the third return sheaves 8 with respect to the rope groove is set within an allowable range. That's what you put in. Otherwise, it is the same as Example 2 and the same reference numerals are the same. Indicates an equivalent, and the description is omitted.

 Therefore, by changing the diameters of the first return wheel and the second return wheel and selecting and combining the diameters of the return wheels that match the intervals of the rope return angles, it is possible to obtain an optimum rope-fleet angle. Moreover, as in the preceding paragraph, the shafts and bearing beams of the first return wheel 5 and the second return wheel 6b do not interfere with each other, so that the distance between the upper and lower return wheels can be further reduced, and the rope fleet angle can be reduced. There is an effect that it can be done.

Example 4.

 6 is a plan view corresponding to FIG. 1 showing the fourth embodiment, and FIG. 7 is a vertical sectional view of the hoistway of FIG. According to this figure, a hoisting port which is hung on a counterweight which has one end hung on the car and the other end rises and lowers facing the car, and a sheave around which the hoisting rope is wound In a one-port, one-buffing elevator apparatus, the hoisting machine 4 is disposed close to the hoistway wall at the top of the hoistway, and the sheave 4a is lifted and lowered. The plurality of ropes 13 from the sheave 4a to the car, which are not parallel to the road surface, are divided into a first return wheel 5 and a second return wheel 6 parallel to the shaft ceiling. It is constructed so that it can be returned vertically to the two cleats on both sides of the car by means of the third return wheel 8a and the fourth return wheel 8b. did.

Therefore, a 1: 1 roving can be achieved with a small clearance at the top of the hoistway, and the car can be suspended at two points surrounding the center of gravity of the car, so that an uneven load is not applied to the car. Can be applied overnight. Also, since the number of the winding flaps is divided at most into the first return wheel and the second return wheel, the rope fleet angle can be reduced. In addition, since the rope free angle can be reduced, uneven wear of the rope groove can be suppressed. The noise can be reduced and the life of the rope can be extended.

Example 5

 8 is a plan view corresponding to FIG. 6 showing the fifth embodiment, and FIG. 7 is a vertical sectional view of the hoistway of FIG. Hoisting machines, sheaves, and return vehicles shall be miniaturized, and all return vehicles not parallel to the hoistway ceiling shall be placed in the gap between the hoistway wall and the car. Otherwise, it is the same as described above, and the same reference numerals denote the same or corresponding components, and a description thereof will not be repeated.

 Therefore, in addition to the effects described in the previous section, by placing the return car in the gap between the car and the hoistway wall, the car will not overlap on the plane of the car, and it will be out of the regulation of the gap between the tops of the car. It also has the advantage of being able to do so.

Example 6

 9 is a plan view corresponding to FIG. 8 showing the sixth embodiment, and FIG. 10 is a vertical sectional view of the hoistway of FIG. In this embodiment, a hoisting rope, a rope having excellent flexibility, or a small-diameter and high-strength steel rope is used in the elevator to reduce the size of the hoist, the sheave, and the return sheave. Otherwise, the configuration is the same as that described above, and the description is omitted. It is obvious that the use of the small-diameter and high-strength steel rope to reduce the size of the hoist, the sheave, and the return wheel can be similarly applied to the first to fourth embodiments.

 Therefore, the space in each machine room-less elevator can be further reduced. Industrial applicability

Since the present invention is configured as described above, it has the following effects. A hoisting rope hung on a counterweight that has one end hung on the car and the other end hoisting up and down along another guide rail, with the car ascending and descending along a pair of guide rails provided in the hoistway; And a hoisting machine having a sheave on which a hoisting rope is wound. In a 1: 1 roving elevator apparatus, the hoisting machine is arranged close to the hoistway wall side above the hoistway. The sheave is arranged not parallel to the hoistway ceiling surface, and the plurality of ropes from the sheave to the car are divided into a first return sheave and a second return sheave two or more parallel to the hoistway ceiling. The car was diverted to the center of gravity of the car, and the rope was returned vertically by a third return wheel, and the car was hung with the rope hooked to the kagome cleat.

 Therefore, according to the above-mentioned layout, it is possible to make 1: 1 bing even with a small clearance at the top of the hoistway, and even if the number of winding ropes is large, the number of first return wheels is plural, so that The angle at which the rope tends to come off with respect to the rope groove of the sheave or return sheave can be kept small.

 Further, since the opening angle can be reduced, uneven wear of the rope groove can be suppressed, noise can be reduced, and the life of the rope can be extended.

Claims

The scope of the claims 1. A car hoisting up and down along a pair of guide rails provided in a hoistway, and a hoisting port hung on a counterweight that has one end hung on the car and the other end up and down along another guide rail. And a hoist having a sheave on which the hoisting rope is wound. In a 1: 1 roving elevator, the hoist is approached to the hoistway wall side above the hoistway. The sheaves are arranged not parallel to the hoistway ceiling surface, and the plurality of ropes from the sheaves to the car are a first return sheave and a second return sheave parallel to the hoistway ceiling. The car is diverted to the position of the center of gravity of the car by dividing it into two or more, and the rope is returned vertically by the third return car, and the car is hung by hanging the rope on the cleat of the car. Elevator overnight device.  2. The elevator apparatus according to claim 1, wherein the first return wheel and the second return wheel have different diameters in the preceding paragraph. 3. A hoisting rope that is hung on a counterweight that goes up and down along a pair of guide rails provided in the hoistway, with one end being hung on the car and the other end going up and down along other guide rails And a hoist having a sheave around which the hoisting rope is wound. The hoisting machine approaches the hoistway wall side at the upper part of the hoistway in a 1: 1-port, one-buffing elevator system. The sheaves are arranged not parallel to the hoistway ceiling surface, and the plurality of ropes from the sheaves to the car are a first return sheave and a second return sheave parallel to the hoistway ceiling. '方向 へ 2' さ ら に さ ら に さ ら に さ ら に さ ら に さ ら に さ ら に さ ら に さ ら に さ ら に さ ら に さ ら に さ ら に さ ら に さ ら に さ ら に さ ら に さ ら に さ ら に さ ら に さ ら に さ ら に さ ら に さ ら に さ ら に さ ら に さ ら に 3 The elevator device is characterized in that it is configured as follows. 4. In the preceding paragraph, the hoist, the sheave, and the return wheel are miniaturized and a plurality of return wheels not parallel to the hoistway ceiling are arranged in the gap between the hoistway wall and the car. The described elevator device.  5. In each of the above elevators, the hoisting rope, the sheave, and the return wheel were downsized by applying a flexible rope or a small-diameter, high-strength steel spout to the hoisting rope. 5. The elevator device according to claim 1, wherein: