JP6397732B2 - Elevator equipment - Google Patents

Description

  The present invention relates to an elevator apparatus that conveys passengers and luggage to different floors of a building, and more particularly to an elevator apparatus that moves at high speed in a long-stroke hoistway.

  In general, many elevator apparatuses are called traction systems. In this traction method, a car and a counterweight are provided in a hoistway formed in a building, and the main rope is wound up by a hoisting machine in a state where the car and the counterweight are suspended by the main rope. The car and the counterweight move up and down in the opposite direction.

  In such an elevator apparatus, when the car moves up or down, the air in the hoistway in front of the car passes through the gap between the outer peripheral surface of the car and the inner wall surface of the hoistway. It flows to circulate in the rear hoistway. Since this air flow flows in a direction opposite to the moving direction of the car, the air flows at a relatively high speed with respect to the car.

  When the car travels at a high speed, the air flow around the car has a significant effect on the car. It is known that the air resistance acting on the car increases in proportion to the square of the moving speed of the car, and the aerodynamic noise caused by the turbulence of the car increases in proportion to the sixth power of the moving speed of the car. Yes. Further, it is known that even when passing with the counterweight, the swaying of the car increases due to a change in air pressure during passing.

  For example, Patent Document 1, Patent Document 2, and Patent Document 3 can be cited as countermeasures for reducing air resistance acting on the car, shaking of the car, and aerodynamic noise. A streamline cover is provided on the car. With this cover, the air flowing around the car is rectified, and the turbulence of the air current around the car can be reduced. As a result, it is possible to reduce air resistance and vibration acting on the car, and further noise in the car.

JP 2011-162323 A JP-A-6-329372 JP-A-10-279230

  In an elevator apparatus used in a recent super high-rise building, it is required that a passenger car moves at a high speed in a hoistway in order to shorten an elevating time. In some recent elevator devices, there are some elevators whose ascending speed exceeds 1000 m / min. As the moving speed of the car increases, the air resistance acting on the car, the vibration of the car, and the noise in the car become more prominent, which makes the passenger uncomfortable.

  With respect to these problems, in the car described in Patent Document 1, a partition plate (apron board) protruding along the ascending / descending direction from the door surface side of the car, and a ceiling of the car, This is done by covering the upper frame together and providing a streamlined windbreak cover that increases continuously as the horizontal cross-sectional area approaches the ceiling of the car. Further, in the car described in Patent Document 2, a cover formed in a streamline along the lifting direction is provided on the upper part of the car, the door side of the car being a plane parallel to the lifting direction. It corresponds by providing. Furthermore, in the car described in Patent Document 3, a dome-shaped cover is provided on the upper part of the car. The structure of the cover on the car described in the above-mentioned three types of patent documents is characterized by the fact that the shape of the cover is a streamline shape in order to reduce air turbulence. And, the effect of reducing aerodynamic noise can be expected.

  However, these covers may not be able to obtain a sufficient length due to restrictions of hoistway specifications such as hoistway dimensions. In addition, as a feature of an elevator apparatus that is used for a high-rise building and moves at a high speed, there is a case in which an air pressure adjusting device that adjusts the air pressure in the car is provided to reduce passengers' clogging. At this time, since the air pressure adjusting device cannot be arranged in the car, it is necessary to arrange the air pressure adjusting device above or below the car, so it is necessary to secure a space for arranging the device. That is, even when the cover height is short, there is a problem that a space-saving cover is required that maintains fluid performance such as reduction of airflow turbulence and secures device arrangement space.

  The object of the present invention is to reduce both the shaking of the car and the noise in the car, which are noticeable when the car moves at high speed, and it is possible to arrange equipment such as a pressure adjusting device. The object is to provide an elevator apparatus.

  In order to solve the above-described problem, the present invention provides, for example, an elevator apparatus including a passenger car that lifts or descends a hoistway to convey a passenger, and the passenger car includes a door through which the passenger enters and exits, A cover disposed on an upper portion of a car, and the cover has a door-side R portion and an anti-door-side R portion on the upper portion of the cover when viewed in a vertical section in a direction perpendicular to the door. And the height dimension of the anti-door side R portion is longer than the height dimension of the door side R portion, and the anti-door side R portion is larger than the horizontal dimension of the door side R portion. The horizontal dimension is longer, and a horizontal straight line connecting the door-side R portion and the non-door side R-portion is provided at the top of the cover.

  According to the present invention, since the air flow separation can be reduced by the R portion provided in the cover, the fluid force acting on the car can be reduced, so that the car shakes and the noise in the car. Can be reduced. Furthermore, when viewed in a vertical cross section in a direction perpendicular to the door, by having a horizontal straight portion connecting the door side R portion and the non-door side R portion, a large volume in the cover can be secured. It becomes possible to arrange equipment such as a pressure adjusting device.

1 is a configuration diagram illustrating a schematic configuration of an elevator apparatus according to a first embodiment. It is a vertical sectional view of the car of the elevator apparatus of the first embodiment. It is a vertical sectional view at the time of mounting equipment on the car shown in FIG. It is a vertical sectional view of the cover of a 1st embodiment. It is the vertical sectional view which compared 1st Embodiment and the cover as described in other patent documents. FIG. 5 is a vertical sectional view including the cover and the car of the first embodiment shown in FIG. 4. It is a vertical sectional view of the car of the second embodiment. It is a vertical sectional view of a car of a 3rd embodiment. It is a vertical sectional view of a car of a 4th embodiment.

  Embodiments of the present invention will be described with reference to the drawings. In each drawing and each embodiment, the same or similar components are denoted by the same reference numerals, and description thereof is omitted.

  First, the general structure of the elevator apparatus of a present Example is demonstrated. As is well known, an elevator apparatus is housed in a hoistway provided in a building. The elevator apparatus of the present embodiment is particularly suitable for a high-speed elevator apparatus used for a super high-rise building.

  In FIG. 1, in an elevator apparatus, a hoisting machine is generally placed on the top portion of a hoistway 10, and is fixed to a floor surface by a fixing means such as a bolt. Although not shown in detail in FIG. 1, the hoisting machine has a sheave 12 for suspending a plurality of traction ropes (main ropes) 11. One end of the traction rope 11 is connected to the upper end of the car 13, and the other end is connected to the upper end of the counterweight 14. The lower end of the car 13 and the counterweight 14 are connected by a compen- sion rope 16 via a lower pulley 15.

  Next, the movement of each part during operation of the elevator apparatus will be described. When the hoisting machine is operated and the sheave 12 rotates in the rotation direction indicated by the arrow AR1, the traction rope 11 suspended on the sheave 12 is indicated by the arrow AR2 due to friction between the traction rope 11 and the sheave 12 at that time. Move along the rope travel direction. Then, the car 13 is moved up by the movement of the traction rope 11. In this case, the counterweight 14 moves so as to descend. Further, when the sheave 12 rotates in the opposite direction and the car 13 descends, the counterweight 14 moves so as to rise. Although not shown in FIG. 1, in order to make the car 13 move up and down smoothly, in an actual elevator apparatus, the side surfaces of the car 13 and the counterweight 14 are guided by guide parts called guide rails. It has become.

  In such an elevator apparatus, an operation command is given to a motor or a braking mechanism of a hoisting machine by a control device (not shown), and the car 13 moves up and down toward a predetermined level of the building by the operation command. It is. Although the elevator apparatus has been described in a simplified manner as described above, actually, various components are further added. In this way, in the elevator apparatus, the car 13 moves up and down in the hoistway and conveys passengers.

  Here, the flow of air around the car 13 will be described. FIG. 2 shows a vertical sectional view in a direction perpendicular to the door 17 through which passengers in the car 13 enter and exit. Here, “in the direction perpendicular to the door 17” is because the vertical sectional view includes vertical sectional views in various directions such as a vertical sectional view in a direction parallel to the door 17. In FIG. 2, 110 indicates a horizontal direction, and 120 indicates a height direction. Considering the case where the car 13 moves up the hoistway 10, the air on the car 13 collides with the ceiling 18 of the car 13. The air that collides with the ceiling 18 flows along the surface of the ceiling 18, but when it reaches the side plate 19 of the car 13, the air cannot flow along the side plate 19 due to the inertia of the air, and the air flow Peels off. In the peeled area P, the pressure is lower than that of the surrounding area, and large and small vortices are generated, and the pressure fluctuation increases. Therefore, the fluid force acting on the car 13 becomes large. And noise increases. Therefore, it can be understood that it is important to reduce the air resistance, vibration, and noise to reduce the area where the air flow is separated.

  FIG. 3 shows a vertical cross-sectional view when a device 20 such as a pressure adjusting device for adjusting the pressure inside the car is arranged on the car 13 to reduce passengers' clogging. Considering the case where the car 13 moves up the hoistway 10, the air on the car 13 collides with the equipment 20 in addition to the ceiling 18. At this time, since the air colliding with the device 20 also causes separation of the flow, it can be seen that the device 20 also affects the air resistance and noise.

  Therefore, in this embodiment, a region where the air flow is separated is reduced by arranging a cover on the upper portion of the car 13. At that time, a shape that can secure a volume in the cover enough to arrange the devices 20 was also considered.

FIG. 4 is a vertical sectional view of the cover of the first embodiment, FIG. 5 is a comparison view with cover shapes described in other patent documents, and FIG. 6 includes the cover and the car of the first embodiment. A vertical sectional view is shown. These drawings are vertical sectional views in a direction perpendicular to the door 17.

In FIG. 4, the cover 21 disposed on the upper portion of the car 13 is viewed from a vertical cross section in a direction perpendicular to the door 17. Each has an R portion. Here, the height dimension H <b> 1 of the door side R portion 22 is shorter than the height dimension H <b> 2 of the non-door side R portion 23. The horizontal dimension L1 of the door-side R portion 22 is shorter than the horizontal dimension L2 of the non-door-side R portion 23. Further, a horizontal straight line portion 24 connecting the door side R portion 22 and the non-door side R portion 22 is provided on the upper portion of the cover 21. As shown in FIG. 6, the cover 21 is installed on the upper portion of the car 13, and more specifically, the cover 21 is supported on the car 13 via a vibration absorber and a connecting member (not shown). Yes.

  Next, the cover shape of 1st Embodiment and the cover shape of other patent documents are compared and demonstrated using FIG. In FIG. 5, the cover of this embodiment is shown as a cover 21, the cover described in Patent Document 2 is shown as a cover 21 </ b> A, and the cover described in Patent Document 3 is shown as a cover 21 </ b> B.

  In the cover 21A, since the R portion is not provided on the door 17 side, an attempt is made to secure a space for storing the device 20 in the cover 21A while maintaining a streamline so that the air flow is not separated, as shown in FIG. Thus, the cover 21A needs to be configured with a gentle curve from the door side to the door side. As a result, in the case of the cover 21A, there is a problem that the height of the cover becomes higher than that of the cover 21. Further, since the cover 21A is not provided with the R portion on the door 17 side, although it is not so large, separation of the air flow occurs on the door 17 side, and there is a concern that vibrations and noises may occur slightly. The On the other hand, since the cover 21 is provided with the door-side R portion 22, separation of the air flow can be reduced also on the door 17 side.

  The cover 21 </ b> B is configured by gentle curves from the center of the car 13 toward the door side and the non-door side. Therefore, unlike the cover 21A, the separation of the air flow can be reduced on the door 17 side, but it can be seen that the height of the cover 21B sufficient for storing the device 20 is not obtained on the door 17 side.

  On the other hand, the cover 21 of the present embodiment has a horizontal straight line portion 24 connecting the door side R portion 22 and the anti-door side R portion 22 at the upper portion of the cover 21, so that the cover height is compared. Then, it comes to be located in the middle of cover 21A and cover 21B, and it is possible to store apparatus 20 in cover 21 by this horizontal straight part 24. Furthermore, since the dimension of the door-side R portion 22 is smaller than the dimension of the non-door-side R portion 23, a long horizontal straight portion 24 can be secured on the door 17 side, and a space for storing the device 20 in the cover 21. Can be secured sufficiently. Further, since the door-side R portion 22 is provided, air flow separation can be reduced even on the door 17 side.

  Next, the flow of air when the car 13 ascends the hoistway 10 will be described with reference to FIG. The air on the car 13 first collides with the straight portion 24 that forms the top of the cover 21, and flows down along the cover 21 toward the door side or the non-door side. The air toward the door side flows down along the door side R portion 22 and the side plate 19. Further, the air traveling toward the anti-door side flows down along the anti-door side R portion 23 and the side plate 19. In general, in an elevator apparatus, since there is passenger getting on and off, the distance W1 between the door 17 side and the hoistway wall of the hoistway 10 is narrow, and the distance W2 between the opposite door side and the hoistway wall of the hoistway 10 is wide. . Therefore, in order to release the air that collided with the car 13 to the side opposite to the door, which is a large space, the dimensions H2 and L2 of the anti-door side R part are set longer than the dimensions H1 and L1 of the door side R part 22. Yes.

  Here, in order to let the air colliding with the car 13 escape to the side opposite to the door, which is a wide space, the height dimension H2 of the anti-door side R portion 23 is four times or more the height dimension H1 of the door side R portion 22. Although it is desirable that the horizontal dimension L2 of the anti-door side R portion 23 is four or more times as long as the horizontal dimension L1 of the door side R portion 22, it is not necessarily limited to this. Absent. When the distances W1 and W2 between the car 13 and the hoistway wall and two or more elevator devices are provided side by side, each dimension is appropriately determined according to the distance between the cars 13.

  Moreover, the dimension of the door side R part 22 is the dimension which can reduce peeling of the flow of air unlike the minute R part which arose simply by the convenience of the process. For example, the height dimension H1 is preferably 50 mm to 500 mm, the horizontal dimension L1 is preferably 50 mm to 500 mm, the height dimension H1 is 200 mm to 300 mm, and the horizontal dimension L1 is more preferably 200 mm to 300 mm. However, the size is not necessarily limited to this as long as it can reduce the separation of the air flow.

  With regard to the flow in any direction, the effect of the corner R portion (the door side R portion 22 and the non-door side R portion 23) makes it difficult for the air flow to peel off. As a result, the peeled region P has no corner R portion. Smaller than the case. Accordingly, it is possible to reduce the air resistance, vibration, and noise of the car 13.

  As described above, according to the cover 21 shown in the first embodiment, the separation of the air flow can be reduced by the door-side R portion 22 and the anti-door-side R portion 23 provided on the cover 21. Since the fluid force acting on the car can be reduced, it is possible to reduce the shaking of the car and the noise in the car. Further, when viewed in a vertical section in a direction perpendicular to the door 17, by having the horizontal straight portion 24 connecting the door side R portion and the non-door side R portion, a large volume in the cover can be secured. Therefore, it becomes possible to arrange | position apparatus 20, such as an atmospheric pressure adjusting device.

  Next, a second embodiment will be described with reference to FIG. What is different from the first embodiment is that a cover 21 </ b> C having a shape in which the top and bottom of the cover 21 are inverted is also arranged below the car 13.

  If there is no cover 21C at the lower part of the car 13 as in FIG. 6 of the first embodiment, when the car 13 rises, the air on the car 13 flows down along the cover 21 and the side plate 19, At the end of the side plate 19, it cannot flow along the car 13 due to the inertial force of air, and the air flow is separated. Due to this separation, a low pressure portion is formed as a separation region Q on the lower side of the car 13, which causes air resistance, shaking and noise deterioration of the car 13.

  Therefore, as shown in FIG. 7, by installing a cover 21 </ b> C similar to the cover 21 at the lower part of the car 13, the end of the side plate 19 and the cover 21 </ b> C are smoothly connected, and the air flowing down the side plate 19 is covered by the cover. By flowing along 21C, the peeling area Q can be made smaller than before the cover 21C is mounted.

  Next, a third embodiment will be described with reference to FIG. The feature of this embodiment is that the height dimension H4 of the cover 21C is set longer than the height dimension H3 of the cover 21.

  In FIG. 7, when covers 21 and 21C are provided above and below the car 13, flow separation areas P and Q, which are low pressure areas, occur in the vicinity of the connection between the cover 21 and 21C and the car 13. The pressures in the separation regions P and Q are different in magnitude between the upper side and the lower side of the car 13.

  The air above the car 13 flows down along the cover 21, and after the flow peels off from the surface of the car 13 near the connection portion between the cover 21 and the car 13, the air again adheres to the wall surface of the car. . On the other hand, the air below the car 13 flows down along the wall surface of the car 13, but downstream from the vicinity of the connecting part between the car 13 and the cover 21C is affected by the inertia of the air, and on the wall surface of the cover 21C. It peels without being along.

  Therefore, the peeling area Q below the car 13 is wider than the peeling area P above the car 13.

  Therefore, as shown in FIG. 8, the height dimension of the lower cover 21 </ b> C is higher than the height dimension H <b> 3 of the upper cover 21 of the car 13 in accordance with the pressure in the separation regions P and Q. By extending H4 to facilitate the air to follow the lower cover 21C, the peeling area Q on the lower side of the car 13 is reduced.

  Therefore, according to the present Example, the passenger car 13 more comfortable than Example 2 can be provided.

  However, the present invention is not limited to this, and there is a restriction on the lower dimension of the hoistway 10, but if there is a margin in the upper dimension, the upper cover 21 of the car 13 is made longer than the lower cover 21C. Also good.

  Next, a fourth embodiment will be described with reference to FIG. The feature of this embodiment is that a sound absorbing material 25 having fine irregularities is attached to the surface of the car 13, the cover 21, and the cover 21C as a member having a sound absorbing function. In FIG. 9, the sound absorbing material 25 is provided on all of the car 13, the cover 21, and the cover 21C. However, the sound absorbing material 25 is provided only on the car 13, only the cover 21, or only a part of each member. Also good. There are various types of the sound absorbing material 25, and soft hair, non-woven fabric and the like can be used. Since the turbulence contained in the air is attenuated by entering the sound absorbing material 25 and the pressure fluctuation on the object surface can be reduced, noise can be reduced.

  As mentioned above, although the Example of this invention has been described, the structure demonstrated by each Example so far is an example to the last, and this invention can be suitably changed within the range which does not deviate from a technical idea. Further, the configurations described in the respective embodiments may be used in combination as long as they do not contradict each other.

DESCRIPTION OF SYMBOLS 10 ... Hoistway, 11 ... Traction rope, 12 ... Sheave, 13 ... Ride car, 14 ... Balance weight, 15 ... Pulley, 16 ... Compen rope, 17 ... Door, 18 ... Ceiling, 19 ... Side plate, 20 ... Equipment, 21, 21A, 21B ... cover, 21C ... lower cover, 22 ... door side R portion, 23 ... anti-door side R portion, 24 ... straight portion, 25 ... sound absorbing material, 110 ... horizontal direction, 120 ... height direction H1 ... height dimension H2 of the cover door side R part ... height dimension H3 of the cover non-door side R part ... upper cover height dimension H4 ... lower cover height dimension L1 ... cover door side R part height Horizontal dimension L2 ... Horizontal dimension W1 of the R part on the side opposite to the cover W1 ... Distance from the door side to the hoistway wall W2 ... Distance from the counterdoor side to the hoistway wall

Claims (7)

In an elevator apparatus equipped with a car that transports passengers by ascending or descending the hoistway,
The car has a door for the passenger to enter and exit, and a cover disposed on the upper part of the car,
The cover has a door-side R portion and an anti-door-side R portion at the top of the cover when viewed in a vertical cross section in a direction perpendicular to the door. From the height dimension of the door-side R portion, Also, the height dimension of the anti-door side R portion is longer, the horizontal dimension of the anti-door side R portion is longer than the horizontal dimension of the door side R portion, and the top of the cover An elevator apparatus having a horizontal straight line portion connecting the door side R portion and the non-door side R portion. In claim 1,
The height dimension of the anti-door side R portion is at least four times the height dimension of the door side R portion, and the horizontal dimension of the anti-door side R portion is the door side R portion. An elevator apparatus characterized in that it has a length that is at least four times the horizontal dimension. In claim 1,
The height dimension of the said door side R part is 50 mm-500 mm, and the horizontal direction dimension of the said door side R part is 50 mm-500 mm, The elevator apparatus characterized by the above-mentioned. In claim 1,
The elevator apparatus characterized in that the cover having an inverted shape is also installed at a lower part of the car. In claim 4,
An elevator apparatus characterized in that a height dimension of a cover installed at a lower part of the car is longer than a height dimension of a cover installed at an upper part of the car. In claim 1,
A member having a sound absorbing function is attached to a surface of the car or the cover. In claim 1,
An elevator apparatus characterized in that equipment is stored inside the cover.