JP2000203778A - Device for reducing wind noise of elevator car to be moved at high speed - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device composed of aerodynamic elements attachable to the outside and a device accessible to the roof of the elevator car, and for reducing wind noise and vibration of the elevator car to be moved at a high speed. SOLUTION: An upper part 3 having an oval-like shape and attached from the outside is movably placed on an elevator car 1 and directly held by a mechanical method by a centering device. Recesses on the side surface surround guide roller supports 6. As a method for providing access to the roof of the car 1, an integrated lifting device capable of lifting the upper extension element 3 is provided. A lower extension element 4 is constituted into a frame-shaped hollow body and has a flap on the lower side, and the flap can be downwardly turned to enable access to a device on the lower side of the elevator car 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to at least one aerodynamic element (part) mounted on an elevator car and a means for accessing a roof, and to reduce wind noise and vibration in a high-speed moving elevator car. It relates to a device for reducing.

[0002]

2. Description of the Related Art Wind noise and vibration are generated by an elevator car of about 4%.
When traveling at high speeds in excess of m / sec, it is caused by eddies in the air that touch or surround the exterior shape of the elevator car. Aerodynamically, the shape of the elevator car itself, with its various edges determined by technical and functional requirements, projections, and lower and upper flat end faces, is the ideal shape for a vehicle. is not.

[0003] In order to reduce eddies in the air that cause noise and vibration, the body of the elevator car should be shaped so that the displaced air can flow with as little eddies as the elevator car moves. It is. In principle, such a shape can be achieved by vertically projecting structures mounted on the upper and lower end faces of the elevator car.

[0004] Various solutions are known which make use of the above principles.

[0005] In March 1986, "Elevator W"
Old Analysis "," Vibration Analysiss "
In a technical article titled "es for Lifts", page 62 shows an elevator car having a streamlined dome at the top and bottom end faces of the elevator car. Further, the outer wall is covered with a sound absorbing material. The side of the dome on the entrance side of the car is a flat surface parallel to the wall of the hoistway on the entrance side. The other three sides of the dome are bent inward, thus reducing the dimensions of the remaining horizontal plane away from the upper and lower end faces of the car.

When moving (running) at a high speed, the external shape of the streamlined dome as described above acts on the guide roller in the lateral direction, which may make the moving comfort uncomfortable. A dynamic force component occurs. The reason is that, when viewed from the side, the streamlined shape of the upper and lower extension elements of the car is in one plane parallel to the hoistway wall near the entrance, but in the other three planes it is significantly inclined During the movement, the dynamic pressure of the air acting on the rear of the elevator car causes the aforementioned lateral forces acting horizontally on the guides.

US Pat. No. 5,220,979 discloses a number of solutions for elevator car extension elements and fittings with the purpose of suppressing the acceleration of airflow near the entrance. A characteristic common to all proposed solutions is that at least one parallel to the entrance hoistway wall
Two additional planes are always made on both the top and bottom of the entrance elevator car. One simple solution is to use a side plate (FIGS. 3A / B, 4A).
It has been proposed to mount fittings having a simply sloping roof shape with / B / C, 9) on the lower and upper parts of the elevator car. Another solution involves an apron part (FIGS. 5-8) through which air passes. FIGS. 10 and 11A show the evolution stages of the solution according to FIG.
Mostly correspond to the above-described drawing of "Elevertor World". Three of the four sides forming a hollow body attached to the upper and lower parts of the car are bent only in one direction. The joint between one side and the side adjacent thereto is angular.

[0008] GB2280662 is similar,
A very vertically elongated extension element and fitting are disclosed. They have a simple curved surface with angular joints and a flat surface parallel to the front shaft wall. In particular, it is characterized by a door that can be opened to provide access to the upper and lower sides of the car. The mountings are quite long in the vertical direction, so at both ends of the hoistway,
A longer runway is required.

[0009]

In all the above-mentioned solutions, it has been shown that the guide part has a laterally acting effect. In addition, the angular joints of the hollow bodies of the extension elements have a disruptive effect on the air flow, so that vortices can also be created in the air. Moreover, many of the actual handling problems have not been solved. With regard to access to the technical equipment of the elevator car, etc., only the last of the above-mentioned documents has a partial solution. However, this solution comes at the cost of an unrealistically long vertical aerodynamic object.

[0010] To this end, it is an object of the present invention to create an improved aerodynamic component mounted on an elevator car. The improved part eliminates the aforementioned disadvantages and is easy to handle.

[0011]

SUMMARY OF THE INVENTION An apparatus according to the present invention is characterized in that a first extension element having an ellipsoidal shape, for example, having a curved outer surface and having a spherically formed joint, is provided at the upper end of the elevator car. It is characterized by being provided as a dome that can be placed.

In order to reduce the noise generated when moving in the descending direction, a second extension element having an aerodynamically favorable profile in the form of a frame-like hollow body having a rounded outer surface and an inner surface is provided. Can be installed under the elevator car.

[0013] Advantageous further developments and refinements are set out in the dependent claims.

The upper extension element is provided with a lifting device which can be operated manually and / or by motor drive. The lifting device provides, on the one hand, access for maintenance work on the upper side of the car and, on the other hand, ensures that passengers trapped in the car can be evacuated.

The lifting device comprises, for example, a rope winch and a hoisting rope operated from an open emergency trap door or from an elevator shaft through a hinged opening. The hoisting rope is secured to the leading edge of the upper extension element, from which it passes through the return pulley above the upper extension element and the return pulley inside the extension element to the rope winch. Reach. When operated by a motor, if there is a power failure, the motor is powered from an auxiliary power supply.

The upper extension element is placed on a centering device on the upper side of the car so that a direct mechanical connection can be made. And it is reliably held at a predetermined position only by its own weight. By removing all securing devices, in an emergency, it is easier to lift the extension element and quickly remove the extension element.

A centering device is provided on the extension element, the metal centering sheet having, for example, riveted and shaped end lines on the edge of the extension element, and a first centering sheet on the car. A centering frame having the same shape as the shaping edge and having a second shaping edge combined with the first shaping edge. When the two shaping edges overlap one another, a direct mechanical connection between the elevator car and the extension elements placed on the elevator car is ensured. Between the shaping edges is an elastic layer that dampens noise and vibration.

[0018] Also, the upper attachable extension element has a groove-shaped recess on each side where the guide is located, the groove-shaped recess being arranged at a distance to guide the guide roller support from all sides. Surround. To ensure a favorable airflow pattern, the inner surface of the recess is offset from the vertical at a slight angle toward the center of the car (offset), and the joints to the sides are gently rounded. I have.

The at least one openable joint allows the upper extension element to be installed on at least two halves. If there is only one joint that can be opened, preferably that joint is at right angles to the guide surface.

The lower extension element is configured as a frame-like hollow body, and is fixed to the lower side of the car by a shaped fixing edge.

The channel surrounds the lower guide roller support on both sides to avoid vortices in the air when moving at high speed. Adjacent to the channel, there is a slight overhang for the guide rail serving the same purpose.

The three sides of the frame-like lower extension element are partially rounded inwards to reduce the surface area of the underside of the elevator car. As a result, the area presented to the air also decreases. The flat front surface of the lower extension element serves as an apron as required by regulations.

Underneath the lower extension element is an inwardly arched frame and two hinged flaps which can be moved open. These downward hinged flaps provide access to the electrical and mechanical equipment on the underside of the car. A simple, manually operated lock holds the flap in the closed position.

The opening at the edge of the flap allows the balancing rope and running cable to pass through. All other spaces are sealed by foam inserts.

The upper and lower extension elements are made of lightweight material,
It is preferably composed of fiber reinforced plastic, reinforced with internal ribs if necessary, has a high degree of structural stability, and therefore, even when moving at high speeds, vibrates on the wall of the extension element Does not happen.

Hereinafter, the present invention will be described in detail based on exemplary embodiments and with reference to the drawings.

[0027]

1 shows an elevator car 1 equipped with the device according to the invention. The device is
Basically, it consists of an upper extension element 3 located above the elevator car 1 and a lower extension element 4 fixed below the elevator car 1. The elevator car 1 has an upper guide roller 5 and a lower guide
It travels with the roller 7. Guide rollers 5 and 7
Is mounted on the guide roller supports 6 and 8 at a vertical distance from the prismatic car body and projects vertically beyond the extension elements 3 and 4. In order to clearly show the extension elements 3 and 4, in FIG. 1 the car suspension ropes, the balancing ropes and the running cables are:
All have been omitted. The extension elements 3 and 4 have portions projecting from their sides and recesses which partially surround the guide roller supports 6, 8 and the guide rail 2.

FIG. 2 shows the upper extension element 3 as viewed from the guide side, having a groove-shaped (channel-shaped) recess 9. Due to the free space created by this recess around the guide roller support 6, when the car moves at high speed, air can flow through this zone with almost no swirl. In addition, the shape of the three inner surfaces of the lateral recesses 9 is such that the recesses 9 become wider towards the tip (top). The suspension rope of the elevator car 1 can pass through the opening 31 at the top of the other upper extension element 3. In order to equip or remove the upper extension element 3, an openable joint (seam) 30, for example, at right angles to the guide surface
There is.

FIG. 3 shows, in cross section, the configuration of the zone at the lower edge of the upper extension element 3 and details of the connection to the elevator car 1. The wall 10 of the extension element around the upper extension element 3
A metal centering sheet (thin sheet) 11 bent several times is fixed to the lower edge of the sheet. The sheet ends horizontally with an edge having a gable-shaped profile 12. Above the elevator car 1, there is a centering attachment 14 having a frame shape and having a bent (curved) portion. The bent profile of the centering attachment 14 has a gable-shaped profile 15. The contour 15 has the same shape as the contour edge 12 of the centering sheet 11 in which it fits perfectly. 13 is
For example, an elastic separation layer joined to the edge contour 15 of the centering frame 14 is shown. The elastic separation layer 13
Helps dampen noise and vibration. From FIG. 3, the upper extension element 3 located on the centering frame 14
It is mechanically held firmly against lateral displacement, and it can be seen that no additional fixation is required in the vertical direction due to its own weight. Simply lift the extension element 3 to access the upper side of the elevator car (approaching)
it can.

FIG. 4 shows a three-dimensional shape of the upper extension element 3 like an ellipsoid by a lattice model.
It can be particularly seen that the joint between the sides and to the recess 9 is rounded. Only these gently rounded junctions between the various zones of the surface allow the air flow to flow without vortices when the car moves at high speed.

Similarly, the plan view of FIG. 5 shows the contour of the upper extension element by contour lines. Also, it can be clearly seen that the recess 9 toward the tip is widened in a funnel shape.

FIGS. 6 and 7 show, in two different variants, the principle of a device which raises the upper extension element 3 so as to allow access to the upper part of the car, and in the event of a fault, allows the trapped passengers to evacuate. Is shown. Elevator car 1
At the top of the is a manually operated rope winch that can be operated from the open emergency trap door (not shown) or from the hoistway through the above hinged opening (not shown) There are eighteen. Hoisting rope 2
0 goes from the rope winch 18 around the return pulley 17 to the return pulley 16 which is fixed to the suspension rope 19 by a rope clip, and then to the top of the upper extension element 3, There, the rope 20 is fixed. The difference between the two variants is
The return pulley 17 is not a difference in principle.
Relevant only for placement. In FIG. 6, the return pulley 17 is fixed to the upper extension element 3 itself, and in FIG. 7, the return pulley 17 is fixed to the suspension rope 19 by a rope clip. Due to the appropriate transmission ratio of the rope winch 18, the force required to raise the upper extension element 3 is very low, so that a person with average force can lift without any difficulty. The device can be operated. The gearbox of the rope winch 18 is, of course,
Configured for self-locking.

FIG. 8 is a three-dimensional perspective view of the lower extension element 4 as viewed from below. The lower extension element is configured as a frame-like hollow body (hollow body). 23
Shows a shaped (shaped) connecting edge, whereby the lower extension element is firmly fixed to the underside of the elevator car 1. On the entrance side of the elevator car, the lower extension element 4 has a plane 22 which acts as an apron as required by regulation. The outer surface behind the plane 22 and the two sides are rounded inward toward the bottom. The shaping channels (grooves) 24 inside are
It surrounds the lower guide roller support and the overhanging enclosure partially surrounds the guide rail 2.

FIG. 9 is a three-dimensional view of the lower extension element viewed obliquely from below. The arcuate inner surface 26 surrounds a rectangular surface which is closed by two flaps 27. The flap 27, which is pivotally fixed by hinges 29, can be opened downward, allowing access to the electrical and mechanical equipment under the car. A simple locking device (not shown) ensures that the flap 27 is kept in the closed position during operation of the elevator. Through the opening 28 at the front end of the flap 27, the balancing rope and the running cable can pass. Opening 28 is preferably sealed by a foam insert to prevent the ingress of air during movement.

FIG. 10 shows the actual shape of the inwardly curved side surface 21 and the front plane 22 which is the outer surface of the lower extension element 4.
Are shown in a side view.

The extension elements 3 and 4 described herein
The material used for the construction is preferably a fiber reinforced plastic. Another method is to coat an injection molded or otherwise molded foam with a laminate. Alternatively, when the number is large, all the raw materials including the metal can be formed by a deep drawing method or a vacuum method.

Various measurements on noise and vibration, in addition to the various calculations involved, were made to determine the contours of the extension elements 3 and 4. In this regard, the shape shown is optimal. However, this does not exclude that, for a particular device, the individual surface areas may have a different outline from the shape shown in the embodiment.

Various systems such as, for example, hydraulic, compressed air, spindle, chain, or gripping systems can be used as the upper extension element lifting device. In the case of a power failure, the drive device can also be operated by a servo actuator operated by an auxiliary power supply.

The centering bolt and the centering hole can also be used as a centering device for the upper extension element 3. These bolts and holes are opposite each other and are located above the extension element 3 and above the elevator car 1.

[Brief description of the drawings]

FIG. 1 is a perspective view of a complete elevator car equipped with the device according to the invention.

FIG. 2 is a schematic three-dimensional view of an upper extension element.

FIG. 3 is a sectional view of the centering device between the upper extension element and the upper side of the elevator car.

FIG. 4 is a lattice model of an upper extension element.

FIG. 5 is a top view with contour lines as viewed from above the upper extension element.

FIG. 6 is a diagram illustrating the principle of a lifting device for an upper extension element (first modification).

FIG. 7 is a diagram illustrating the principle of a lifting device for an upper extension element (second modification).

FIG. 8 is a three-dimensional perspective view of the lower extension element as viewed from above.

FIG. 9 is a perspective view of the lower extension element seen from below.

FIG. 10 is a side view of the lower extension element.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 elevator car 2 guide rail 3 upper extension element 4 lower extension element 6, 8 guide roller support 9 recess 16, 17 return pulley 18 rope winch 20 rope 24 shaping channel 25 enclosure 27 flap 30 joint

 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Jürgen Caesciutre, Switzerland, Twe-Ha-6370-Shiutance, Am Leistbeek 7, B-Bee (72) Inventor, Aretzus Oberell, Twe-Har, Switzerland 6373 Entv Tojurgen, Schutanza Schillertasse 21 (72) Inventor Christian Bundscheu, Germany-Day 71735 Eberdaingen, Goethe Schütlerse 17 (72) Inventor Albrecht Morlotsk Germany, Day- 72160Horb, Hotsbusbustraße 14 (72) Inventor Jürgen Port, Germany, Day-71292 Fryolzheim, Eichensichtraße 15, 15 (72) Inventor Rainer Müller, Germany, Day-7 5417 Mühlattka, Crotzberg Schüttraße 50 (72) Inventor Helmutt Heizmann Germany, Day 70190 Schutt Gutgart, Uhr Ahsichtasse 8

Claims (10)

[Claims] The wind noise and vibrations of a fast moving elevator car comprising at least one aerodynamic element (3, 4) mounted on the elevator car (1) and means for accessing the car roof. Device for reducing, comprising an upper extension element (3) having a shape similar to an ellipsoid, preferably a frame-like lower extension element (4), and a device for lifting the upper extension element (3). An apparatus characterized in that: 2. The method according to claim 1, wherein the lower edge of the upper extension element and the upper edge of the elevator car have centering devices (11 to 15) which are fitted together. The described device. 3. The device according to claim 1, wherein the upper extension element is mounted on the roof of the car so as to be movable. 4. The lifting device basically comprises a rope (2
Rope winch (18) with 0), deflection pulley and return pulley (17, 16)
The device of claim 1, comprising: 5. The device according to claim 4, wherein the lifting device is operated manually and / or motor-driven. 6. The device according to claim 1, wherein the upper extension element has at least one openable joint. 7. The method according to claim 1, wherein the upper extension element has, on the guide side, a groove-shaped recess (9) surrounding the roller support (6) and the guide rail (2). The described device. 8. The device according to claim 1, wherein the lower extension element is configured as a frame-shaped hollow body. 9. The lower extension element (4) is pivotable downward and is closed by a flap (27) allowing access to the mechanical and electrical equipment under the elevator car (1). 9. The device of claim 8, wherein 10. The lower extension element (4) has a channel (24) for the lower guide roller support (8) and an overhanging enclosure (2) partially surrounding the guide rail (2).
Device according to claim 7, characterized in that: 5).