FI107729B - ELEVATOR CAGE - Google Patents

Description

107729

CAR

The invention relates to an elevator car as defined in the preamble of claim 1.

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Conventionally, a car frame, i.e. a rigid, substantially rectangular frame with sliding guides and grips, to which the ropes are also attached or supported, serves as the supporting structure of the elevator car. The basket 10 itself is then built inside the rigid basket frame, i.e. the floor is built on the lower support of the basket frame, the walls are built inside the vertical beams and the roof of the basket is below the upper support of the basket frame. Thus, the load-bearing and rigid element of the entire structure is a rack-15 hys, whereby the rack itself can be made of relatively light materials.

In order to simplify and lighten the body structure, an elevator car has been developed in which the body frame need not be constructed as a completely separate and external body structure. ♦ · · · · 1 The 25-foot lower support forms at least part of the floor, which · · rigidly connects the vertical beams to the lower end.

Below the rigid body, both sides of the body are supported by · 1 ·. · Then supported by a roller with support structures so that the · · basket is lifted by means of two ropes passing through the • • 30 φ roller underneath the body.

• · ·

The prior art is also described in French Application Publication FR-A-1371974, which discloses • · · • · ... 1 elevator car with side panels consisting of several sheets ··· 35. In this body structure, each side wall comprises »·« · .1 · 1. two discs with a center disc in the middle.

2 107729 This center plate is U-shaped, so the plates on each side are bent to fit a U-shaped center plate. This belted structure of the center plate increases the rigidity of the walls of the basket and makes it possible to secure the support members. The joints of these plates form protrusions on the side wall. The floor and ceiling of this elevator car consist of three panels similar to the walls, with a U-shaped reinforcement plate in the center.

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Although the car body-less elevator car structure is relatively small in space, modernization of elevators often involves situations where the shaft spaces are very limited both at the top of the shaft and at the bottom-15 of the shaft as well as in width. Often, the elevator engine room is still up so that the lower lifting body structure requires special arrangements for the ropes and extra folding wheels. The well-known frameless basket structure thus requires too much space 20 in many applications.

The object of the invention is to eliminate the above-mentioned drawbacks. In particular, it is an object of the invention to provide a novel elevator car structure which does not have 25 separate car frames and which allows lifting from the top so that the elevator car is less bulky and • ·: ·. thus available for cramped modernization.

The elevator car according to the invention is characterized in that it is shown in the ♦ ♦ · section of claim 1. The features of some preferred embodiments of the invention will be apparent from the dependent claims.

The load-bearing structure of the elevator car according to the invention is Ύ.Ι a carcass whose vertical beams form part of the wall elements of the elevator car, the upper support forming at least a part of the elevator car. 107729 the ceiling of the elevator car and the lower support forms at least part of the floor rigidly connecting the lower beams. According to the invention, a reinforcement is provided in connection with the roof of the elevator car, and the car comprises only one deflection wheel, the deflection wheel being supported on the reinforcement. In the prior art, at least two underframe impellers below the body can be replaced by only one top impeller which lifts the body from the middle to the top.

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The reinforcement according to the invention may be arranged in connection with the upper support of the elevator car and may, for example, form a stiffening profile connecting the upper ends of the vertical beams. In addition to the vertical-15 beams, the stiffener profile may also be attached to the upper support, i.e. part of the roof of the bodywork.

In one embodiment of the invention, the reinforcement includes stiffening plates attached to both sides 20 of the top of the roof which forms part of the roof, extending over the entire width of the elevator car, i.e. one to the other. In addition, the stiffening plates have sufficient height to be vertically stiff. Preferably, the stiffening plates are supported with one or more spacers,] 1: 25, whereby they form a relatively rigid housing structure above the body. In this case, the only impeller associated with the body may be attached to the housing structure. between the stiffening plates.

The elevator car construction according to the invention has significant advantages over the prior art. In the frame-less body structure according to the invention, the known ''! 1! the two sub-technology wheels of the prior art may have been replaced by a single upper wheel, resulting in a significant reduction in the total cost of the 35 · elevator car. In addition, the basket requires significantly less space in the shaft and can be easily fitted into machine-tight curb modernization shafts without additional folding wheels and other rope arrangements.

The invention will now be described in detail with reference to the accompanying drawing, in which an elevator car structure according to the invention is shown.

In the elevator car shown in the drawing, some of the wall and ceiling structures have not been shown, so that the inventive structure of the arm 10 can be more clearly seen. The elevator car comprises vertical beams 1 which form part of the wall elements of the car. At its lower end, the vertical beams are rigidly connected to each other by a lower support 3 formed by the floor of the basket. At its upper end, the vertical beams 15 1 are connected to one another by an upper support 2 which forms at least part of the roof of the elevator car.

A stiffener 4 is provided in connection with the roof of the elevator car, which in this embodiment is formed by two stiffening plates 6. The stiffening plate 6 is a rigid plate of width and height fastened at both ends . At the top edges of the stiffening plates .1: ": 25 have stiffening plates 8 which extend over the entire length of the staging plates. In addition, the stiffening plates 6 are secured at their lower edges by bolts 12 to the upper support 2 between them.

At this distance, the stiffening plates 6 and · ***: the intermediate supports 7 connecting them form the elevator car »·· *. 35 to the upper part of the upper support 2 in connection with the rigid housing structure.

In the center of the housing structure, between the stiffening plates 6, there is a support structure 9 supported and secured to the stiffening plates 6, on which the sole impeller 5 of the elevator car is located.

Thus, the suspension of the elevator car takes place from the ceiling of the car with a single flywheel supported by a reinforcement provided in connection with the ceiling.

The invention has been described above by way of example with reference to the accompanying drawings, in which various embodiments of the invention are possible within the scope of the inventive idea defined by the claims.

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Claims (3)

107729 An elevator car having a support structure as a basket frame comprising: 5. vertical beams (1) forming part of a wall element, upper support (2) forming at least a part of the elevator car ceiling, lower support (3) formed by 'vertical beams -10 to a rigidly connecting floor or lat Tian part and to the roof of the elevator car is provided a stiffener (4) comprising stiffening plates (6) on both sides of the upper support (2), characterized in that the only upper folding wheel (5) ) is supported between the stiffening plates (6). Elevator car according to claim 1, characterized in that the reinforcement (4) is formed by a stiffening profile connecting the upper ends of the vertical beams 20. Elevator car according to claim 1 or 2, characterized in that the stiffening plates (6) are connected to one another by the selected (7). • · «« • • • • • • •••••••••••••••••••••••••••••••••••••••••• · ·••••••••••••••••• 107729