JP2008512325A - Elevator cage and method of installing elevator cage - Google Patents

Abstract

  In order to stabilize the entire cage platform, a platform edge (8) that is stably contoured is joined to the upper surface of the platform section. The platform sections are also provided with connection points (2.1, 3.1, 4.1) arranged in parallel vertical planes, in which the platform sections are additionally connected to each other by connection elements. The cage platform (1, 21) is prepared in the form of two separate platform sections (2, 3, 4) in the production facility and is transported to the elevator installation site with two contoured platform edges. . The separate platform sections (2, 3, 4, 22, 23, 24) and the contoured platform edges of the cage platform (1, 21) are connected by connecting elements at the installation site so as to form a cage platform. Combined together.

Description

  The subject of the present invention is an elevator car comprising a car platform comprising a plurality of platform sections and a method of installing such an elevator car.

  The car platform forms the basic support structure for the elevator car. The car platform must be designed to be sufficiently rigid to withstand the static and dynamic stresses imposed by the loads in the car and other components of the car. The car floor area is related in a particular way to the load in the car for which the elevator car is designed.

  From German Patent 3,134,764, an elevator car platform is known which comprises at least two platform sections made of relatively thin steel plates. The two platform sections are arranged adjacent to each other along the length of the elevator car and are secured to each other by welding. In order to ensure the required rigidity of the car platform, i.e., to sufficiently reinforce the platform section that is bent forward and backward by the load on the car platform, its front end and / or rear end is Connected to the vertical struts of the car frame by tie rods. Advantages of this construction method include ease of manufacture and reduced weight compared to a car platform made of rolled steel.

  There are several drawbacks to a car platform manufactured according to the procedure of DE 3134964. First, the disclosed tie rod connections between the vertical struts of the car frame and the front and rear ends of the platform section required to reinforce the car platform are complex and longer to manufacture. Installation time is required and the number of elevator components required is increased. Secondly, many modern elevator elevator cars are self-supporting, that is, they no longer have a car frame to which the end of the platform section can be secured.

  The first object of the present invention is that it is not necessary to reinforce the platform section by connecting it to other parts of the car using struts, but nevertheless a relatively thin metal sheet provides sufficient rigidity and light weight. It is to devise an elevator car with a car platform that includes a plurality of platform sections that can be manufactured.

  A second object is to define an efficient and material saving method for installing an elevator car according to the present invention comprising a car platform comprising a plurality of platform sections.

  In an elevator car according to the invention comprising a car platform comprising a plurality of platform sections, the first object mentioned above is that on the upper surface of the car platform, extending over and fixed to the upper surfaces of all the platform sections. This is accomplished by attaching a platform edge section.

  The elevator car according to the present invention is such that the platform edge section ensures the rigidity of the car platform along the length of the car required for elevator operation, so that the platform section of the car platform is made of a relatively thin sheet metal. It has the advantage that it can be manufactured in a lightweight and simple manner. At the same time, the platform edge section serves as a fastening element that secures the car platform to the side wall of the elevator car. In this way, in the usual case, they form a transition element between the car floor and the side wall that gives a visible or aesthetic satisfaction.

The aforementioned second object is achieved by a method for installing a car platform including a plurality of platform sections, in which the installation of the car platform is performed in the following steps:
A plurality of separate platform sections of the car platform and two platform edge sections are provided at the factory;
Transporting the pre-assembled platform section together with the platform edge section to the location of the elevator;
During assembly at the elevator installation site, the platform section of the car platform and the platform edge section conveyed separately from each other are joined together by fastening elements to form a car platform, the platform sections are aligned with each other, Step reinforced with platform edge section.

  “In the factory” work is done under factory-like conditions before the elevator is shipped and before it is assembled at the site of the elevator, ie using particularly suitable auxiliary equipment and equipment, for example in a suitable building. Is understood to mean the work done.

  Benefits derive from the method according to the invention for installing an elevator car, in which, firstly, the use of a rigid platform edge section makes it possible for a car platform comprising a plurality of platform sections to be relatively light in weight. Strengthened so that it can be made of thin sheet metal. This makes it very easy to transport the car platform to the installation location and move it to its installation location, for example into the elevator hoistway of the building. Second, when assembling the elevator at the installation site, the lightweight platform sections are joined together without much effort, because the platform sections are almost spontaneously aligned with each other by the effect of the platform edge section. A car platform can then be formed.

  Advantageous embodiments and other developments of the invention are described below.

  The platform edge sections (8, 28) are areas of the two side edges of the car platform (1, 21) located opposite to each other so that the effective usable area of the elevator car is not limited by their presence. Is conveniently attached to.

  The platform edge section can absorb bending stress on the platform section where the load in the car protrudes from the central platform section without other components, thereby reducing the deflection of less than 1% of the length of the platform section. When the platform edge section material and cross-section are selected to receive, optimum conditions regarding the rigidity and weight of the car platform are provided.

These characteristics of the platform edge section are that they are made of steel or aluminum alloy and that they have a cross-sectional second moment of 50 cm ⁴ and / or a total height of at least 6 cm relative to the horizontal axis of gravity. It is preferably achieved by having.

  According to one particularly preferred embodiment of the invention, the platform edge section acting as a reinforcing element also forms a connecting element by which the side walls of the elevator car are coupled to the car platform. This solution creates a rigid connection between the elevator car side wall and the car platform, combining this function of the platform edge section with their function as a reinforcing element, resulting in a considerable car platform structure. Simplify, and thereby save significant costs.

  According to a further preferred embodiment of the elevator car according to the invention, the front and rear platform sections are arranged in contact with the central platform section. With this concept, the platform section can have different lengths and different shapes in order to fulfill or simplify the realization of the different functions present in the elevator car.

  One embodiment of the invention in which the platform sections of the car platform have fastening points arranged in parallel vertical planes, in which these platform sections are additionally connected to each other using fastening elements, preferably screw fasteners An important advantage is derived from. In this embodiment, the platform sections are spontaneously aligned with each other when the fastening elements are tightened, particularly when the platform edge section is simultaneously coupled to the platform section. Furthermore, in this arrangement of fastening points, when the fastening elements between the platform section and the platform edge section are subjected to shear forces, the fastening elements are subjected to tensile forces at the vertical fastening points and vice versa. As a result, the possible relative movement of the platform section under load is reliably prevented.

  Prominent flexibility with respect to the manufacture of a car platform according to the present invention is achieved by allowing the front and / or rear platform sections to be fabricated as a single platform section or to include multiple subsections.

  A particularly inexpensive embodiment of the car platform according to the present invention results when the platform section or its subsections are made as U-shaped bent metal sections each containing one monolithic sheet metal.

  According to a preferred embodiment of the method according to the invention, the platform sections of the car platform are fastened to each other by fastening elements at fastening points arranged in parallel vertical planes. This has the advantage that the platform sections are spontaneously aligned with each other when the fastening elements are tightened. In addition, with these fastening point arrangements, if the fastening element between the platform section and the platform edge section is subjected to a shear force, the fastening element will receive a tensile force at the vertical fastening point and vice versa. . In this way, possible relative movement of the platform section under load is reliably prevented.

According to another advantageous development of the method according to the invention, the assembly of the car platform at the installation site of the elevator comprises the following steps:
The platform sections are aligned along the length of the elevator car such that their respective vertical fastening points are located opposite each other;
Platform edge sections are placed on top of all platform sections and loosely secured to the platform sections by fastening elements;
The fastening elements are inserted through openings in the area of the vertical fastening points, and the platform sections use the fastening elements to face each other in the area of those vertical fastening points without tension;
The fastening elements are alternately tightened alternately at the platform edge section and the vertical fastening point, thereby spontaneously aligning the platform section.

  As described above, by combining the clamping to the platform edge section and the vertical fastening point, when the platform section is secured, they are spontaneous to each other when the fastening elements of the associated fastening points are alternately and gradually tightened. Is ideally aligned.

  In the following, two exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

  FIG. 1 shows, in exploded view, a structure with all the important components of a first embodiment of an elevator car cage platform 1 according to the invention.

  FIG. 2 shows a side view of the car platform 1 according to FIG. 1 in the assembled state.

  The car platform 1 includes a plurality of platform sections 2, 3, 4 made of sheet steel and steel plates, one front platform section 3 and one rear platform section 4 arranged in contact with the central platform section 2, respectively. Is done. Fixed on the top surface of these platform sections in a common plane is a car floor plate, preferably manufactured as a laminate. As the car floor plate, an aluminum or plastic honeycomb sandwich plate or a wood fiber plate having metal laminated plates on both sides is suitable.

  The central platform section 2 takes the form of an elevator car safety plan built into the car platform. It provides the elevator car with the required rigidity and saves space in a normal elevator car that is occupied by a safety plank that is underneath and not incorporated into the car platform.

  The central platform section 2 forming the safety plan has fastening points 2.5, 2.6, in particular for car guide shoes and / or safety devices. A safety shock absorber may be attached to the safety plank. Furthermore, a suspension / return pulley 11 through which the flexible suspension means supports and moves the elevator car is incorporated in the central platform section 2 forming a safety plank. In this case, the suspension / return pulley 11 has grooves and ribs running in the outer circumferential direction that function together with the ribs and grooves of the V-ribbed belt that functions as the suspension means.

  A safety space protection device 12 can also be incorporated in the central platform section 2 forming the safety plan. By extending laterally the bolting rod 12.1 functioning with a stopper fixed in the elevator hoistway, for example during an inspection trip, between the car roof and the hoistway upper space and / or in the car Ensure that a safe distance between the floor and the floor of the elevator hoistway cannot be passed.

  The platform sections 2, 3, 4 all comprise at least two longitudinal supports 2.2, 3.2, 4.2 and at least one transverse support 2.3, 3.3, 4.3, respectively. The lateral support 2.3 is a part of the central platform section 2 that forms the safety plan of an elevator car built into the car platform 1. The lateral support 3.3 serves to support the sill section 7 (shown only in FIG. 2) as well as the sharon apron support 13, the upper part of the lateral support 4.3 being the rear wall of the car (see FIG. (Not shown) can be fixed to it.

  The platform sections 2, 3, 4 have fastening points 2.1, 3.1, 4.1 in parallel vertical planes, in each of the vertical planes, two of the platform sections are brought together by fastening elements 10. Fixed. A removable fastening element such as a screw fastening is preferably used. However, the fixing of the platform section in the region of the vertical plane may also be performed with other fastening elements such as rivets or snap-type fastening elements.

  In this fastening concept, when assembling the car platform at the elevator site, the respective platform sections to be joined are first roughly aligned with each other. Then, with the help of the fastening elements, they lean against each other in the region of the vertical fastening point, so that the platform sections spontaneously align with each other. Mutual alignment is aided by attaching the platform edge sections simultaneously, as will be described later.

  All of the platform sections 2, 3, 4 are fastened to the platform sections 2, 3, 4 at the assembly points at the installation site of the elevator, fixed to the platform sections 2, 3, 4 and flanged together. Reference is made at 8 to two platform edge sections extending in the region of the side edges of the car platform 1 on the upper surface of the platform section. The fastening points of the platform sections are arranged such that they are in a common horizontal plane when the car platform 1 is assembled. For securing between the platform edge section 8 and the platform sections 2, 3, 4, a removable fastening element such as a screw fastener is preferably used. However, such fixation may be performed with other fastening elements such as rivets or positive fit fastening elements. A positive fit connection between the platform edge section 8 and the platform sections 2, 3, 4 may be made, for example, using snap fasteners.

The platform edge sections 8 are dimensioned such that they substantially contribute to the rigidity of the overall car platform 1. Their materials and cross-sections can absorb the bending stresses they exert on the platform sections 3 and 4 where the load in the car together and without the involvement of other components protrudes from the central platform section 2 Is advantageously selected to receive a deflection of less than 1% of the length of the respective platform section. This property of the platform edge section is achieved by having a cross section made of steel or aluminum alloy and having a cross-sectional second moment of at least 50 cm ⁴ and / or a total height of at least 6 cm relative to the horizontal axis of gravity. Is preferred.

  The platform edge section 8 serves primarily to reinforce the entire car platform 1, so that the rigidity requirements of the platform sections 2, 3, 4 can be correspondingly reduced. They can therefore be manufactured lighter. In this case, the platform sections 3 and 4 are manufactured only from steel plates having a maximum thickness of 2.5 mm. Secondly, the platform edge section 8 serves to couple the car side walls (not shown) to the car platform 1, thereby forming a visually pleasing conversion element between the car floor and the car side walls. do.

  During assembly at the elevator installation site, the platform edge section 8 uses the fastening elements 14 in place between them and the platform sections 2, 3, 4 to be precisely aligned with each other. Furthermore, they also serve to align each other on the same plane.

  In and / or above the front and / or rear platform sections 3, 4, for example, the sill section 7, the attachment section 13 of the shear apron under the sill section 7, the mounting elements 4.3. 1. There may be car components such as end switches, electrical system terminal boxes, hoistway lighting lamps and the like. The front and / or rear platform sections 3, 4 have various corresponding shapes, as can be done by serving them.

  The aforementioned components and subsystems incorporated in or on one of the platform sections 2, 3, 4 (cage guide shoe, safety device, safety shock absorber, suspension / return pulley, safety space securing device, shear Aprons, end switches, terminal boxes, etc.) are preferably pre-installed and wired in the factory to minimize assembly costs at the elevator installation location and optimize assembly quality. A car platform according to the present invention consisting of a plurality of platform sections, firstly, the individual platform sections to be transported and brought to the assembly site are handled relatively easily as well as the built-in subsystem, and secondly, A platform section that remains separated provides the ideal condition of this assembly concept because it can be better packed so that the components and subsystems are well protected.

  Longitudinal supports 3.2, 4.2 defining the respective lengths L3, L4 of the platform sections 3, 4 and transverse supports 2.3, 3.3 defining the width B of the platform sections 2, 3, 4 4.3 are manufactured and stocked independently of each other, the lengths L3 and L4 and width B of the platform sections 2, 3 and 4 can be selected according to the concept of module dimensions. The factory preparation of the platform section takes place only on the basis of a specific order with defined cage dimensions by combining longitudinal and transverse supports with corresponding dimensions. With this manufacturing and inventory concept, the cost of manufacturing and inventorying the car platform can be kept extremely low while maintaining the optimal supply capacity.

  FIG. 3 shows a side view of a second embodiment of a car platform 21 of an elevator car according to the present invention. FIG. 4 shows a view in the longitudinal direction A of the car platform 21 and a cross-sectional view of the car platform at the connecting portion indicated by II-II in FIG.

  This embodiment of the car platform 21 according to the invention also includes a plurality of platform sections 22, 23, 24, one front platform section 23 and one rear platform section 24 being arranged in contact with the central platform section 22, respectively. . The front and rear platform sections 23, 24 are preferably composed of a plurality of subsections 23a, 23b, 24a, 24b.

  The subsections 23a, 23b, 24a, 24b of the front and rear platform sections 23, 24 are basically made as U-shaped bent metal sections, in each case made by parallel bending from one single sheet metal. The The vertically configured web of U-shaped bent metal sections not only serves as a lateral reinforcement for the car platform, but the subsections are joined together by fastening elements 30 and the central platform section 22 and the front and rear It also forms fastening points 22.1, 23.1, 24.1 arranged in a vertical plane that also serve as connection points between each of the platform sections 23, 24. The short front and rear platform sections may consist of only one integral U-shaped bent metal section.

  Similar to the first embodiment, the central platform section 22 is manufactured as a safety plank integrated into the car platform 21 and is made of only steel plates. This platform section 22 also has a car guide shoe and fastening points for safety devices, similar to the safety plank shown in FIG. However, these fastening points are not shown here so as not to detract from the description of the particularly simple structure of the platform section.

  The front and rear platform sections 23, 24 may be of various shapes to meet various functions and requirements, or to allow various positions of the central platform section. They are, for example, fastening elements 24b.. For securing the rear wall of the cage so that they can receive the sill section 27 or in their sheet metal body. 1 may be formed (bent) to be incorporated. By changing the length L23, L24 of the flanged platform sections 23, 24 or their subsections 23a, 23b, 24a, 24b relative to the central platform section 22 (safety plank), the various of the car platform 21 Dimensions are realized. Different widths B are realized by using steel plates of different widths to manufacture the platform sections 22, 23, 24 and 22, 23a, 23b, 24a, 24b, respectively.

  All subsystems and components described in connection with the first embodiment may be incorporated in or on the platform sections 22, 23, 24 of the car platform 21 and are separated from each other. Incorporation of subsystems into or on the board is done as a factory preparatory assembly.

  As described above, in this embodiment, each of the platform sections 23, 24 or their subsections 23a, 23b, 24a, 24b flanged to the central platform section 22 is U-shaped by a simple parallel bending process. Is manufactured from a single sheet metal. All platform sections and / or subsections have a vertically oriented web that runs perpendicular to the car platform 21 and provides sufficient vertical rigidity to the car platform. These may be connected together, for example by means of an auxiliary section 31, so that the free lower end of the vertical web can be secured. The attachment of the auxiliary section 31 is only performed at the place where the elevator is installed.

  As can be easily understood from FIG. 3, a platform section composed of sections made of relatively thin sheet metal bent laterally does not give the cage platform sufficient bending rigidity in its longitudinal direction.

  Thus, in the embodiment of the car platform 21 described herein, the longitudinal stiffness required for elevator operation is reduced in the area of the two opposite side edges of the car platform 21 for all platform sections. The upper surface in the common plane of 22, 23, 24 is ensured by mounting at the installation site two sufficiently rigid platform edge sections 28 which are connected using it.

  Also in this embodiment, the platform edge section 28 further serves as a fastening element between the car side wall (not shown) and the car platform 21. In this case, the platform edge section 28 includes a plurality of T-shaped grooves along their entire length so that the platform edge section 28 having a rectangular cross-section can be secured to either the platform sections 22, 23, 24 or the side walls. 32 is provided. When the car platform 21 is assembled at the installation site, a suitably shaped screw head or nut is inserted into these T-shaped grooves 32 and bolted to the platform section and side walls.

  In this second embodiment, the car associated with the first embodiment, except that the platform section does not have a lateral support and therefore it is not necessary that such lateral support be manufactured and stocked separately. All of the characteristics and advantages of the platform as well as the features and advantages of the method of installing the elevator also apply to the second embodiment described here.

1 is an exploded view of a first embodiment of an elevator car cage platform according to the present invention; FIG. FIG. 2 is a side view of the car platform shown in the exploded view of FIG. 1. FIG. 4 is a side view of a second embodiment of an elevator car cage platform according to the present invention. FIG. 4 is a longitudinal view of the car platform according to FIG. 3 and a cross-sectional view of the car platform.

Claims (12)

An elevator car comprising a car platform (1, 21) comprising a plurality of platform sections (2, 3, 4, 22, 23, 24),
Platform edge sections (8, 28) secured to the platform sections (2, 3, 4, 22, 23, 24) are located on the upper surface of all platform sections (2, 3, 4, 22, 23, 24). Elevator car, characterized in that it extends above.   2. The elevator car according to claim 1, characterized in that the platform edge section (8, 28) is mounted in the area of two opposite side edges of the car platform (1, 21).   The cross-section and material of the platform edge section (8, 28) absorbs the bending stress they exert on the platform section where the load in the car protrudes from the central platform section (2, 22) without the involvement of other components 3. Elevator car according to claim 1 or 2, characterized in that it is selected to receive a deflection of less than 1% of the length of the platform section. The platform edge section (8, 28) is made of steel or aluminum alloy and is characterized by having a cross section with a moment of inertia of at least 50 cm ⁴ and / or a total height of at least 6 cm with respect to the horizontal axis of gravity. The elevator car according to one of claims 1 to 3.   5. Platform edge section (8, 28) according to one of claims 1 to 4, characterized in that it forms a fastening element for securing the elevator car side wall to the car platform (1, 21). Elevator car.   The front and rear platform sections (3, 4, 23, 24) are arranged in contact with the central platform section (2, 22), and the front and rear platform sections (3, 4, 23, 24) are connected to the elevator car. 6. Elevator car according to one of claims 1 to 5, characterized in that it can be shaped in various ways so that it can fulfill various functions existing therein.   Fastening points (2.1, 3.1, 4.1, 22.1, 23.1) in which at least two of the platform sections (2, 3, 4, 22, 23, 24) are arranged in parallel vertical planes 24. 1) elevator car according to one of claims 1 to 6, characterized in that in the parallel vertical planes these platform sections are fastened together by fastening elements (10, 30) .   The front and / or rear platform section (3, 4, 23, 24) is manufactured as a single platform section or comprises a plurality of subsections (23a, 23b, 24a, 24b) Item 8. The elevator car according to one of items 1 to 7.   The front and rear platform sections (23, 24) and / or their subsections (23a, 23b, 24a, 24b) of the car platform (21) are made as U-shaped bent sections, each consisting of one monolithic sheet metal The elevator car according to claim 8, characterized in that: A method of installing an elevator including an elevator car comprising a car platform (1, 21) composed of a plurality of platform sections (2, 3, 4, 22, 23, 24),
A car platform (1, 21) divided into a plurality of platform sections (2, 3, 4, 22, 23, 24) and two platform edge sections (8, 28) are provided at the factory;
Transporting the pre-assembled platform section (2, 3, 4, 22, 23, 24) together with the platform edge section (8, 28) to the location of the elevator;
Platform sections (2, 3, 4, 22, 23, 24) and platform edge sections (8, 28) of the car platform (1, 21) transported separately from each other during assembly at the elevator installation site Are joined by fastening elements (10, 30) to form a car platform (1, 21), the platform sections being precisely aligned with each other and reinforced with platform edge sections. A method characterized by.   Fastening points (2.1, 3.1, 4.1, 22.1) in which the platform sections (2, 3, 4, 22, 23, 24) of the car platform (1, 21) are arranged in parallel vertical planes. , 23.1, 24.1). 11. The method according to claim 10, characterized in that it is additionally coupled to each other. The assembly of the car platform (1, 21)
Platform sections (2, 3, 4, 22, 23, 24) have their corresponding vertical fastening points (2.1, 3.1, 4.1, 22.1, 23.1, 24.1) Arranged adjacent to each other in the longitudinal direction of the elevator car so as to be opposite to each other;
Platform edge sections (8, 28) are placed on top of all platform sections (2, 3, 4, 22, 23, 24) and are loosely secured to the platform sections by fastening elements (10, 30) Steps,
Fastening elements (10, 30) are inserted through openings in the region of vertical fastening points (2.1, 3.1, 4.1, 22.1, 23.1, 24.1) and platform sections (2 3, 4, 22, 23, 24) approach each other in the region of their vertical fastening points without pre-tensioning using fastening elements;
Fastening elements (14, 34, 10, 30) are connected to the platform edge sections (8, 28) and vertical fastening points (2.1, 3.1, 4.1, 22.1, 23.1, 24.1). ) And alternately step by step, whereby the platform sections (2, 3, 4, 22, 23, 24) are spontaneously aligned with each other. the method of.

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