JP6652883B2 - Elevator equipment - Google Patents

Description

  The present invention relates to an elevator apparatus, and more particularly to an elevator apparatus having a structure for suppressing fluid noise generated by an airflow around a car from propagating into the car.

  With the development of high-rise building construction technology, high-speed elevators have been demanded. Recently, high-speed elevators that rise at a speed of 1000 m or more per minute have been commercialized. In these high-speed elevators, since the car moves at high speed in the hoistway, the flow of air (airflow) around the car is released, and fluid noise is generated. Since the fluid noise (aerodynamic noise) generally increases in proportion to the sixth power of the elevator speed, the noise in the car rapidly increases as the elevator speed increases, and the passenger comfort in the car increases. Significantly worsens. In order to improve this, in a general high-speed elevator, streamlined rectifying covers are installed above and below the car to suppress air flow separation and reduce fluid noise.

  As a technique for reducing fluid noise generated in a car, Japanese Patent Application Laid-Open No. H10-163,873 discloses a car that runs in a hoistway, and is installed on at least one of an upper end and a lower end of the car. And an air conditioner having a shape in which the cross-sectional area in the horizontal direction is partially different from the traveling direction of the air conditioner. According to Patent Literature 1, by the action of the air conditioner provided in the car, abrupt inflow to the front of the car when the car passes through a narrow portion in the hoistway is suppressed, and aerodynamic noise is reduced. It is said that it can be.

  Patent Literature 2 has a car that moves up and down in a hoistway, and the air conditioner is formed by bending the width direction end of the car inward at least at the lower part of the car where the car is adjacent to the hoistway wall. There is disclosed an air conditioner for an elevator characterized by the following. According to Patent Literature 2, since at least a lower part of the car at a lower surface of the car adjacent to the hoistway wall of the car is provided with a wind regulating plate whose end is bent inward, eddy currents around the car are suppressed and reduced, It is said that it is possible to provide an air conditioner for an elevator which reduces wind noise generated by eddy currents and improves ride comfort.

JP 2011-57318 A JP-A-6-80356

  Generally, the soundproofing performance of the front side of the car is inferior to that of the rear side or the side. This is because there is a door at the front of the car, but in order to smoothly open and close the door, it is necessary to provide a certain gap between the door and the surrounding members, and from this gap the sound inside the car Is to leak and transmit. In each of Patent Documents 1 and 2 described above, the airflow entering between the front of the car and the hoistway, which has low soundproof performance, cannot be sufficiently reduced.

  The present invention has been made in view of the above circumstances, and does not impair functions of an elevator apparatus such as a door opening / closing function of a car and an elevator function of the car. It is an object of the present invention to provide an elevator apparatus having a rectifying structure capable of reducing an airflow that enters between the cars and reducing a fluid noise generated in a car.

In order to achieve the above object, the present invention provides a car that moves up and down the hoistway, a counterweight that moves up and down with the car, and a rope that has one end connected to the car and the other end connected to the counterweight. An elevator apparatus comprising: a hoist having a sheave on which a rope is wound; and a rectifying structure provided on a car, wherein the car has a front face provided with a door, and faces the front face. A rear surface, a pair of side surfaces provided between the front surface and the rear surface, and an upper surface and a lower surface connected to ends of the front surface, the rear surface, and the pair of side surfaces, respectively. A front plate provided at an end connected to the front surface of the upper surface of the car, and a pair of side plates provided at an end connected to the side surface of the upper surface of the car and having the same width as the width of the side surface And the front plate and the side plate are the same A box having a U-shaped cross section in which both end portions of the front plate and one end portion of the side plate are connected and integrated, and are connected to the upper surface of the car of the front plate. An elevator device having a notch at an end opposite to the cut end.

  ADVANTAGE OF THE INVENTION According to this invention, it penetrates between the front surface of a car and a hoistway, while obstructing the function of the elevator apparatus, such as the opening / closing function of a car door, and the function of raising / lowering a car, etc. An elevator apparatus having a rectifying structure capable of reducing airflow and reducing fluid noise generated in a car can be provided.

  Problems, configurations, and effects other than those described above will be apparent from the following description of the embodiments.

It is a schematic diagram which shows the side surface of the conventional car which does not have a rectifying cover. It is a schematic diagram which shows the side surface of the car which has the conventional rectification cover. It is a top view of the car of a general elevator apparatus. It is a perspective view which shows typically the car which has the conventional rectification cover. It is a figure showing typically the elevator apparatus concerning the present invention. It is a perspective view which shows typically the car of the elevator apparatus which concerns on Example 1 of this invention. It is the schematic diagram which looked at the front plate of FIG. 6 from the front. FIG. 7 is a cross-sectional view of the rectification structure of FIG. 6. FIG. 7 is a cross-sectional view of the rectification structure of FIG. 6. FIG. 7 is a cross-sectional view of the rectification structure of FIG. 6. FIG. 7 is a cross-sectional view of the rectification structure of FIG. 6. It is a perspective view which shows typically the car of the elevator apparatus which concerns on Example 2 of this invention. It is the schematic diagram which looked at the front plate of FIG. 9 from the front. It is a perspective view which shows typically the car of the elevator apparatus which concerns on Example 3 of this invention. It is a perspective view which shows typically the rectification | straightening structure provided in the upper part of the car of the elevator apparatus which concerns on Example 4 of this invention. It is a perspective view which shows typically the car provided with the rectification | straightening structure which does not have a notch. It is the schematic diagram which looked at the front plate of FIG. 13 from the front.

  First, prior to a detailed description of an elevator apparatus according to the present invention, a rectifying cover of a conventional elevator apparatus will be described. FIG. 1 is a schematic diagram illustrating a side surface of a car without a rectifying cover, and FIG. 2 is a schematic diagram illustrating a side surface of a car having a conventional rectifying cover. FIG. 1 schematically shows the direction (streamline) of the airflow 40 above the car 10 when the car 10 of the elevator apparatus rises (moves upward from below the paper surface). Generally, the airflow 40 flows along the wall surface of the structure (the car 10) and forms a "laminar flow" 41. However, as shown by an X portion in FIG. 1, the curvature of the outline of the shape of the car 10 is large. At the corner, the speed and direction of the airflow 40 change suddenly, and the airflow 40 cannot follow the change in the shape of the car 10, and finally separates, forming a “turbulent flow” 42 therefrom. When the airflow 40 becomes a turbulent flow 42 and the flow is disturbed, vortices of various sizes are generated in the flow, and these vortices collide with each other or re-collide with the wall surface of the car 10. Pressure fluctuations occur and propagate to their surroundings. This is the mechanism of generating fluid noise.

  On the other hand, in FIG. 2, the rectifying cover 20 ′ is provided on the car 10, and by making the outer shape of the rectifying cover 20 ′ a smooth streamline, a rapid change in the flow velocity and the flowing direction of the airflow 40 is suppressed. As a result, a “laminar flow” 41 is formed along the wall surface of the car 10 so that the flow proceeds to the downstream as compared with the case where the rectifying cover 20 ′ is not applied, so that the separation of the airflow hardly occurs. For this reason, the eddies due to the turbulence of the air flow are also less likely to be released, and as a result, fluid noise is reduced. As described above, it is ideal that the rectifying cover 20 ′ has a streamlined shape as smooth as possible and has no projections or depressions so as not to cause a sudden change in flow velocity and direction in the airflow 40 around the car. is there.

  Next, the location where the fluid noise occurs in the car 10 will be described. FIG. 3 is a plan view of a car of a general elevator device. The plan view of FIG. 3 is a view seen from the upper surface side (ceiling side) of the car. As shown in FIG. 3, the car 10 of the elevator apparatus arranged in the hoistway 30 has a front surface 11 provided with a door 12, a rear surface 14 facing the front surface 11, and a front surface 11 and a rear surface 14. And a box body having a top surface and a bottom surface (not shown) connected to the front surface 11, the back surface 14, and the ends of the pair of side surfaces 15, respectively. The structure including the front surface 11, the back surface 14, and the pair of side surfaces 15 is referred to as a "car side plate structure".

  The fluid noise source is generated between the hoistway wall 31 and the car 10 and is incident around the car (this incident sound is referred to as “incident sound” 91), but the noise generated in the car 10. Are divided into two types according to the path through which the incident sound 91 propagates into the car 10. One is that the sound generated between the hoistway 30 and the car 10 is incident on the car side plate structure and the door 12, so that the car side plate structure and the door 12 themselves are vibrated by vibration, and finally, It emits sound into the interior of the car 10 and is called "transmitted sound" 92. The transmitted sound 92 generally depends on the structure that is transmitted, in this case, the car side plate structure and the surface density of the door 12, and the higher the surface density, the smaller the transmitted sound 92.

  The other is a “leakage sound” 93 that leaks directly from a gap between the car side plate structure and the door 12. Comparing the transmitted sound 92 and the leaked sound 93, the contribution of the leaked sound 93 is generally larger than the transmitted sound 92. For this reason, a seal member 13 may be provided in a gap between the car side plate structure and the door 12 for the purpose of reducing the leakage noise 93. Is difficult to realize, and the situation in which the leaked sound 93 contributes still is not significantly changed. In view of the soundproofing characteristics of the car 10, among the fluid noise sources around the car 10, the fluid noise sources particularly generated on the front surface 11 of the car 10 provided with the door 12 are more positively affected. A consideration is made that it must be reduced.

  FIG. 4 is a perspective view schematically showing a car having a conventional rectifying cover. As described with reference to FIG. 2, in the car 10 provided with the conventional rectifying cover 20 ′, turbulence can be prevented by having the rectifying cover 20 ′. The airflow is not structured to positively prevent the airflow from flowing into the front side of the car 10. For this reason, as shown in FIG. 4, the airflow 43 flowing to the front of the car is generated to some extent, and when this is disturbed, a fluid noise source 90 is generated on the front of the car 10, especially near the upper part of the door. As described above, since the front surface of the car has particularly poor soundproofing properties, it is necessary to prevent airflow from flowing into the front surface of the car in order to reduce the fluid noise of the car. Therefore, in the elevator apparatus according to the present invention, the car is provided with a novel rectifying structure capable of reducing the inflow of airflow into the front of the car. Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings.

  FIG. 5 is a diagram schematically showing an elevator apparatus according to the present invention. As shown in FIG. 5, the elevator device 100 according to the present invention includes a car 10 that moves up and down the hoistway 30, a counterweight 50 that moves up and down together with the car 10, and one end connected to the car 10, Is a hoisting machine (not shown) having a rope 51 connected to a counterweight 50, a sheave 52 around which the rope 51 is wound, and rectifying structures 20, 20 'provided in the car 10 Prepare. The rectifying structure 20 is provided at the upper part of the car 10, and the rectifying structure 20 ′ is provided at the lower part of the car 10. Like the conventional car described above, the car 10 has a front face provided with the door 12, a back face facing the front face, a pair of side faces provided between the front face and the back face, a front face, a back face, and It is composed of a box having an upper surface (ceiling surface) and a lower surface (floor surface) connected to the ends of a pair of side surfaces, respectively.

  FIG. 6 is a perspective view schematically showing a car of the elevator apparatus according to the first embodiment of the present invention, and FIG. 7 is a schematic view of the front plate of FIG. 6 as viewed from the front. As shown in FIGS. 6 and 7, the rectifying structure 20a according to the present embodiment is provided at an end of the upper surface (not shown) of the car 10 connected to the front surface 11 so as to extend the front surface 11. And a pair of side plates 22a provided on the upper surface of the car 10 at the ends connected to the side surfaces 15 so as to extend the side surfaces 15. The front plate 21a has a notch 23a at the end opposite to the end connected to the upper surface of the car 10 (part of the side farther from the car 10). The notch 23a provided at the end of the front plate 21a of the present embodiment is provided with the notch 23a so as to have a parabolic shape protruding toward the car 10 when viewed from the front. .

  By providing the rectifying structure 20a having the above-described configuration, the airflow 40 from above the car which does not collide with the notch 23a during the ascent and descent of the car 10 is the one of the front plate 21a of the rectifying structure 20a. It flows stably to the back (the space surrounded by the front plate 21a and the side plate 22a). On the other hand, of the airflows 40 from above the car, those that collide with the notch 23a flow into the front side of the front plate 21a as in the airflow 43 in FIG. 22a) and diffuses to the surroundings, and the flow velocity decreases near the door 12. This phenomenon will be described in detail with reference to FIG. As shown in FIG. 7, when the airflow 40 flows from the upper part of the rectification structure 20a, a part thereof collides with an end (a notch 23a) of the front plate 21a, and a part thereof further moves to the front side of the car. Flow in. However, the flow colliding with the notch 23a changes its flow velocity direction so as to flow in the normal direction of the notch 23a (in the direction of the arrow 70 in FIG. 7) when going over the notch 23a. As shown by the arrow, it spreads so as to diffuse left and right.

  The effect of the notch 23a will be described in more detail. FIG. 13 is a perspective view schematically showing a car provided with a straightening structure having no notch, and FIG. 14 is a schematic view of the front plate of FIG. 13 as viewed from the front. The car 10 shown in FIG. 13 includes a rectifying structure 20 ″ including a front plate 21 ′ and a side plate 22 ′, but the front plate 21 ′ does not have a notch as in the present invention. If the front plate 21 'does not have the notch, the airflow 43 descending from above the car 10 collides with the end of the front plate 21', flows into the front surface of the front plate 21 ', and is divided into right and left. It descends without any change. In addition, the airflow that has flowed to the side plate 22 'also wraps around the front plate 21'. As a result, an airflow flows into the front surface 11 of the car 10 and a fluid noise source 90 is generated. In this manner, the notch 23a is not enough to provide the car 10 with the front plate 21 'and the side plate 22' in order to prevent the airflow from flowing into the front surface 11 of the car 10; It is essential to provide a notch in 21 '.

  Hereinafter, the structure of the above-described rectification structure 20a and the movement of the airflow will be described in detail. 8A to 8D are cross-sectional views of the rectifying structure of FIG. FIG. 8A is a cross-sectional view of a portion closest to the tip of the rectifying structure 20a (the end on the side where the notch 23a is provided), and FIG. 8A, FIG. 8B, and FIG. (C) and 8 (d) are cross-sectional views of locations closer to the lower end (the end on the side connected to the car 10) of the rectifying structure 20a in the order of (c) and (d). In other words, FIGS. 8A to 8D show a change in the cross-sectional shape of the rectification structure 20a from the front end to the lower end of the rectification structure 20a. As shown in FIGS. 8A to 8D, the airflow 40 that has flowed into the space substantially surrounded by the front plate 21a and the side plate 22a flows so as to be gathered in the center direction of this space, and finally flows. It can be seen that the water can flow stably to the back of the car. As a result, generation of a fluid noise source on the front side of the car 10 having low soundproofing characteristics is suppressed, and a quiet environment in the car can be maintained.

  As described above, the elevator apparatus 100 according to the present invention extends the front plate 21 a provided to extend the front surface 11 provided with the door 12 of the car 10 and the side surface 15 of the car 10. A rectifying structure 20a having a side plate 22a provided at the top of the car 10 and a front plate 21a having a notch 23a can effectively move the airflow 40 above the car 10 to the car. The airflow 43 that can flow to the back of the car 10 and collides with the notch 23a and flows into the front side of the front panel 21a flows along the left and right sides of the front panel 21a, thereby moving to the front 11 of the car 10. Airflow can be prevented.

  When the side plate 22a is not provided, the airflow 40 cannot be captured in the space surrounded by the front plate 21a and the side plate 22a, and the airflow flowing on the back side of the front plate 21a returns to the front side of the front plate 21a. It enters, descends as it is, and flows to the front surface 11 of the car 10. Even if the front plate 21a and the side plate 22a are provided, if the front plate 21a does not have the notch 23a, the airflow 43 colliding with the notch 23a is separated from the front plate 21a as described with reference to FIGS. The airflow 43 cannot flow in the left-right direction of the car 21 a, but descends as it is and flows to the front face 11 of the car 10. Even if the front plate 21a does not have the notch 23a and the side plate 22a has the notch 23a, the airflow 40 cannot be effectively flowed to the back. That is, the effect of the present invention can be obtained by the fact that the flow regulating structure 20a has the front plate 21a and the side plate 22a, and the notch is provided in the front plate 21a.

  As described above, according to the elevator apparatus of the present invention, the airflow 40 from above the car that does not collide with the notch 23a during the ascent and descent of the car 10 is stable on the rear surface of the rectifying structure 20a. The vehicle that collides with the notch 23a flows in the left-right direction along the front plate 21a and can prevent the airflow from flowing into the front surface 11 of the car 10, so that the fluid noise generated in the car Can be reduced. Further, in the present invention, the rectifying structure 20a is provided on the upper part of the car 10 and no seal member or device is installed around the door 12, so that the opening and closing of the door 12, the kinetic performance of the car and the like are performed. It is possible to improve the soundproofing characteristics of the car 10 without hindering the performance of the elevator.

  The present invention, which can reduce fluid noise during the raising and lowering of a car, is particularly suitable for a high-speed elevator or a medium-high-speed elevator traveling on a single hoistway.

  In the above description, the example in which the rectifying structure 20a is provided on the upper surface of the car 10 has been described. However, as shown in FIG. The structure 20 a ′ may be provided, and by providing the rectifying structure on both the upper surface and the lower surface of the car 10, the effect of the present invention can be further enhanced.

  The material of the front plate 21a and the side plate 22a constituting the rectifying structure 20a is not particularly limited as long as it has strength suitable for the rectifying structure. For example, FRP (fiber reinforced plastic) or resin may be used. it can. When a resin is used as the material, the rectification structure 20a can be manufactured by an additive manufacturing method (3D printer).

  FIG. 9 is a perspective view schematically showing a car of the elevator apparatus according to the second embodiment of the present invention, and FIG. 10 is a schematic view of the front plate of FIG. 9 as viewed from the front. The rectifying structure 20b according to the present embodiment differs from the rectifying structure 20a according to the first embodiment in the shape of the notch 23b. In the first embodiment, the front end of the front plate 21a has a shape having two peaks on the left and right due to the notch 23a (this shape is referred to as a "right and left bimodal type"). The front end of the front plate 21b according to the example has a shape cut out trapezoidally by the notch 23b when viewed from the front. The front plate 21a of the first embodiment has many curved surface portions, and there is a portion that has to be molded using a mold for a material such as FRP, but the front plate 21b according to the present embodiment is different from the first embodiment. Also, the front plate 21b can be manufactured at a lower cost than the front plate 21a according to the first embodiment, since it has a small number of curved surface portions and can be manufactured using a sheet metal or the like. As shown in FIGS. 9 and 10, even with such a shape of the notch 23b, similarly to the first embodiment, the airflow 43 flowing into the front side of the front plate 21b flows downstream to the front plate 21b. Since it is divided into right and left along, the airflow flowing around the front surface 11 of the car 10 can be reduced, and the fluid noise generated in the car can be reduced.

  FIG. 11 is a perspective view schematically showing a car of the elevator apparatus according to the third embodiment of the present invention. The difference between the rectifying structure 20c according to the present embodiment and the rectifying structure 20a according to the first embodiment and the rectifying structure 20b according to the second embodiment is the shape of the notch 23c. The notch 23c of the front plate 21c according to the present embodiment has a V-shape when viewed from the front. Even with such a shape, the same effects as in the first and second embodiments can be obtained. The shape of the notch is not limited to the shapes of the above-described second and third embodiments, and may have another polygonal shape.

  FIG. 12 is a perspective view schematically showing a rectifying structure provided at an upper part of a car of an elevator apparatus according to Embodiment 4 of the present invention. The rectifying structure 20d according to the present embodiment is different from the rectifying structure 20a of the first embodiment, the rectifying structure 20b of the second embodiment, and the rectifying structure 20c of the third embodiment in the shape of the side plate 22d. The side plate 22d according to the present embodiment has a shape that is convex toward the upper side of the car. Even when the side plate 22d has such a shape, the same effects as those of the first to third embodiments can be obtained.

  As described above, according to the present invention, without hindering the functions of the elevator device such as the opening / closing function of the car door and the function of raising / lowering the car, during the elevation of the car, It has been shown that it is possible to provide an elevator apparatus having a rectifying structure capable of reducing the airflow entering between the hoistway and the fluid noise generated in the car.

  Note that the present invention is not limited to the above-described embodiment, and includes various modifications. For example, the above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described above. Further, a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of one embodiment can be added to the configuration of another embodiment. Also, for a part of the configuration of each embodiment, it is possible to add, delete, or replace another configuration.

  10 car, 11 front, 12 door, 13 seal member, 14 side, 15 back, 20, 20a, 20a ', 20b, 20b', 20c, 20c ', 20d, 20', 20 ' '... Rectifying structure, 21, 21a, 21a', 21b, 21b ', 21c, 21c', 21d ... Front plate, 23a, 23a ', 23b, 23c ... Notch, 22, 22a, 22a', 22b, 22b ', 22c, 22c', 22d ... side plate, 30 ... hoistway, 31 ... hoistway wall surface, 40 ... airflow above the car, 41 ... laminar flow, 42 ... turbulence, 43 ... airflow flowing into the front of the car. 50: counterweight, 51: rope, 52: hoisting sheave, 60: guide rail, 61: guide device, 70: diffusion direction of airflow flowing into the front of the car, 90: fluid noise source, 91: incidence Sound, 92 ... transmitted sound, 9 ... leakage sound, 100 ... Elevator equipment.

Claims (8)

A riding car that goes up and down the hoistway, a counterweight that goes up and down together with the car, a rope that is connected at one end to the car and the other end is connected to the balancing weight, and the rope is wound around An elevator apparatus including a hoist having a sheave and a rectifying structure provided in the car,
The car includes a front surface provided with a door, a rear surface facing the front surface, a pair of side surfaces provided between the front surface and the rear surface, and ends of the front surface, the rear surface, and the pair of side surfaces. An upper surface and a lower surface respectively connected to the portion,
The rectifying structure is provided on the upper surface of the car, a front plate provided at an end connected to the front surface, and at the upper surface of the car, provided at an end connected to the side surface , A pair of side plates having the same width as the width of the side surface, and the front plate and the side plate have the same height, both ends of the front plate and one end of the side plate are It is a box with a U-shaped cross section that is connected and integrated,
An elevator apparatus having a cutout at an end of the front plate opposite to an end connected to the upper surface of the car.   2. The elevator apparatus according to claim 1, wherein an airflow flows through the rectifying structure to a rear surface of the car while the car is moving up and down.   2. The elevator apparatus according to claim 1, wherein the notch in the front plate has a parabolic shape that is convex toward the car when viewed from the front. 3.   2. The elevator apparatus according to claim 1, wherein the notch of the front plate has a V-shape when viewed from the front.   2. The elevator apparatus according to claim 1, wherein the front plate is cut out in a trapezoidal shape by the notch when viewed from the front.   2. The elevator apparatus according to claim 1, wherein an end of the side plate opposite to an end connected to the upper surface has a parabolic shape that is upwardly convex. 3.   The elevator apparatus according to any one of claims 1 to 6, further comprising, on the lower surface, a lower car rectifying structure having a structure in which the rectifying structure is turned upside down. .   The elevator apparatus according to any one of claims 1 to 6, wherein a cross-sectional area of the rectification structure is from an end of the rectification structure opposite to an end connected to the car. An elevator apparatus, which is configured to increase in size toward the car.

Images