EP3176120A1 - Traction sheave elevator in backpack design - Google Patents

Abstract

The invention relates to a traction sheave elevator in backpack design, which is preferably used in buildings where vibrations are undesirable, no engine room is available and the car should be made large in relation to the manhole dimensions. The invention has for its object to provide a cost-effective elevator with a high ride comfort, in which a good sound decoupling is realized to the building. In the elevator, the drive package should be designed in such a compact design that no machine room is required and a large car can be accommodated in a small elevator shaft. The traction sheave elevator in backpack design has at least one drive which is attached to at least one drive carrier (4). At least one of the drive carriers (4) rests on at least two damping elements A (1). Each damping element A (1) is fastened by means of a respective bracket (16) to the rail back (17) of the two guide rails (10). A damping element A (1) consists of at least two damping layers (2), which are separated from each other by at least one soothing mass (3). The rail backs (17) of the two guide rails (10) are aligned with each other. At least one drive carrier (4) is connected via laterally arranged abutment surfaces (5) with a fixed abutment (8) and secured against rotation. In this case, elastic damping elements B (6) are arranged between the laterally arranged abutment surfaces (5) and the abutment (8).

Description

The invention relates to a traction sheave elevator in backpack design, which is preferably used in buildings where vibrations are undesirable, no engine room is available and the car should be made large in relation to the manhole dimensions.

In the case of a rigid connection between drive and drive carrier as well as drive carrier and building, the vibrations generated by the drive are transmitted to the building undamped. In the building these are perceived as disturbing. In the elevator arrangement described here, the transmission of such vibrations into the building is significantly reduced by a double elastic bearing between the drive carrier and the building.

The drive carrier rests on damping elements, each consisting of two damping layers and intermediate calming mass, wherein the two damping layers of a damping element can have different damping characteristics. By this construction, a wide frequency spectrum is effectively damped. This type of storage is known, for example, from VDI 2566 Part 1, December 2001 edition. There, it is described on page 8 that a double elastic bearing can also be used for elevator installations.

For the realization of a double elastic bearing different solutions are known. In elevators with engine room above the elevator shaft, a drive carrier rack is isolated to the machine room floor by two support brackets attached to the drive carrier and at the support points to the engine room floor damping elements are enclosed. The disadvantage of this is that space above the elevator shaft is required for the engine room.

A solution for machine room-less elevators provides that the support beams located in the elevator shaft are placed in wall niches and decoupled by double elastic damping elements to the shaft wall. If you want to do without the wall niches, consoles can be attached to the shaft wall, which produce the support for the support beams. Fig. 1 shows a machine frame with support beams of a machine room-less elevator, the damping elements are placed in one half of the wall in wall niches and fixed in the other half on brackets.

The support beams used in these solutions are required to dissipate the torque generated by the drive, which causes a tilting of the drive carrier, and to convert it into vertical forces in the supports, which are received by the elevator shaft wall, the shaft frame or the engine room floor. The variants with support beams are complex and expensive. It requires a lot of steel and at least four damping elements.

In the variant with engine room, a separate space above the elevator shaft is required. Since most elevators are to drive to the top floor of the building, this means that the building skin must be penetrated. For architectural reasons, this is usually not wanted and would also be associated with costs.

In the variant with machine and support beams located in the elevator shaft, the support beams can be arranged so that they are above the car. The disadvantage here is that the car can not drive past the support beams. The shaft head must be very high, so that the car can drive to the top floor.

Alternatively, the support beams can be moved so far apart that they are outside the projection of the car and the car can drive past it. In this solution The height of the shaft head compared to the car height can be small. However, aside from the car projection, there must be enough space for the support beams. If this is not the case, only a small car can be installed in this shaft. If the shaft doors are very high at a small shaft height, the support beams do not fit into the shaft.

The solution with niches requires additional work for their construction. Unfortunately, through the niches the shaft wall is penetrated or at least reduced in thickness, which is counterproductive for the decoupling of the shaft to the building.

The use of consoles also means additional material and labor and their carrying capacity is lower than that of the shaft wall or guide rails.

Another known solution provides that the support carrier is dispensed with by using two drive carriers which lie outside the projection of the traction sheave. As a result, increase the vertical forces in the support points of the two drive carrier by the engine torque, but it does not come to tipping. In this solution, the drive carrier is wider than the pulley diameter, and thus i.d.R. also wider than the drive. This is a hindrance if the car is to drive past at small shaft head heights on the drive carrier and drive. The ratio of car width to shaft width is unfavorable.

Alternatively, traction sheaves could be used with smaller diameter, which reduces the life of the support means. For small pulley diameters, smaller width drives would also be used since the required drive torque is smaller. However, the advantage of the smaller drive dimensions for the ratio between car and shaft width could not be utilized by the laterally arranged machine carriers.

A traction sheave elevator with simply elastic bearing of the machine carrier with derivation of the drive torque via a car and this diagonally opposite counterweight rail with a lying between the car and the counterweight rails drive is off DE20320004U1 known.

This design was chosen to divert the vertical forces applied to the drive evenly into a car and a counterweight rail. The disadvantage here is that the normally very weak dimensioned counterweight rail must be significantly larger than is the case when the vertical forces are absorbed by the car rails or the shaft wall.

By a Ableitrolle near the machine carrier a double wrap is effected. Unfortunately, this has a negative effect on the life of the rope and takes up additional space, which is not always available when passing the car on the drive unit or deteriorates the ratio between car width and shaft width.

The invention has for its object to provide a cost-effective elevator with a high ride comfort, in which a good sound decoupling is realized to the building. In the elevator, the drive carrier should be designed in such a compact design that no machine room is needed. It should be possible to drive past the car on the drive and the drive carrier. In addition, a very favorable ratio between car and shaft width and between car and shaft depth to arise.

According to the invention the object is achieved by the features of claim 1. Advantageous embodiments are described in the subclaims.

The elevator according to the invention is provided with a double elastic bearing of the drive carrier and lateral stops on Drive carrier, which derive the torque generated by the engine in rigid counter bearing equipped, the side stops are elastically isolated from the abutments. The anvils are firmly connected to the guide rails of the car and / or the counterweight and / or the shaft wall and / or the shaft framework.

The traction sheave elevator in backpack design has at least one drive, which consists of a motor, a traction sheave and a brake. The drive is attached to at least one drive carrier. In order to support it, at least one of the drive carriers rests on at least two damping elements A. Each damping element A is fastened by means of a respective bracket or another type of holder to the rail back of the two guide rails for the car, wherein a damping element A consists of at least two damping layers, which are separated by at least one soothing mass.

The rail backs of the two guide rails for the car are aligned with each other. At least one drive carrier is connected via laterally arranged abutment surfaces with at least one fixed abutment and secured against rotation. In this case, elastic damping elements B are arranged between the laterally arranged abutment surfaces and the abutment.

In a particular embodiment, the damping layers of a damping element A may be formed differently hard or have different damping characteristics. The damping layers are matched to each other in accordance with the masses acting on the drive carrier and the excitation frequencies in order to effectively damp a wide frequency spectrum. The machine carrier is ideally decoupled from the building, the structure-borne noise transmission into the building is significantly reduced.

So that the shaft head height can be made small in relation to the cabin height, the car and the car supporting frame should be able to pass the drive. In order to achieve this, in a preferred embodiment, the guide rails for the car are carried upwards so long that they reach past the drive. The drive finds space between the guide rails for the car and the drive, the drive carrier and the damping elements A are outside the projection of the car.

For large rated loads and / or cabin masses, one or both brackets can be connected as an additional support with at least one shaft wall to relieve the guide rails for the car.

The torque generated by the engine can be introduced via at least one counter bearing in at least one guide rail for the car, wherein the counter bearing is attached to the rail back of at least one guide rail for the car. The guided in a preferred variant of the drive guide rails for the car can be used as an abutment. For this purpose, an additional rail bracket is mounted on the drive on the guide rail for the car so that it dissipates the motor torque in the shaft wall as horizontal forces together with the rail bracket under the drive. Particularly advantageous in this arrangement is that only a load-bearing shaft wall is needed and therefore leaves a great creative freedom.

If the guide rails for the car, e.g. due to the drive length is not extended past the drive up, so it may be useful to extend the drive carrier in the longitudinal direction to the shaft wall or to the shaft frame and dissipate the engine torque there.

In order to keep the area between the car and the shaft walls that is unusable for the passenger as low as possible, The drive carrier should not build laterally next to the drive or the traction sheave, but should be arranged in the projection plane of the traction sheave.

Preferably, such an elevator is designed as a machine room-less traction sheave elevator, since in this case the advantages of the space-saving design can be used to a particular extent.

The invention makes use of a compact machine carrier, which is preferably narrower than the drive pulley diameter. By supporting on the guide rails for the car, the forces acting on the machine frame weight forces are discharged into the pit. No forces are introduced into the counterweight rails. The torque from the drive is preferably absorbed by the guide rails for the car without the use of support beams.

In one embodiment, the machine carrier can be supported both on the guide rail for the car and the shaft wall.

The torque generated by the motor is derived from the drive carrier via lateral stops on the drive carrier in rigid counter bearing. The counter bearings are rigidly connected to the guide rails for the car and / or the elevator shaft or the shaft frame. The lateral stops are elastically isolated from the counter bearings. The drive system is arranged so that a passing of the car on the drive, drive carrier and double-elastic storage is possible. The lateral deflection of the drive is sufficiently limited to ensure good ride comfort and good stopping accuracy. The drive carrier may consist of one or more sectional steel beams, a sheet metal support structure or a combination of the two.

The invention set forth herein discloses a very simple and inexpensive arrangement in which, compared to solutions without double elastic storage, no additional space above or in Aufzusschacht is required. The car can drive past the drive carrier, the car height is in very good relation to the shaft head height. A penetration of the building skin is not required. The car depth is in very good relation to the shaft depth and also the car width is large compared to the shaft width. Support beams are not needed.

Fig. 1

Stand der Technik

Fig. 2

Treibscheibenaufzug in Rucksackbauweise

Fig. 3

Detail A aus Fig. 2

The invention will be explained in more detail using an exemplary embodiment. Show it:

Fig. 1

State of the art

Fig. 2

Traction sheave elevator in backpack construction

Fig. 3

Detail A off Fig. 2

Fig. 1 shows a motor 9 on a drive carrier 4 with support beams 19 of a machine room-less elevator, in which the damping elements A 1 are placed in a picture half in wall niches 21 a shaft wall 14 and secured in the other half of the image on brackets 20.

An embodiment is in the Fig. 2 and 3 can be seen, the Fig. 3 a detailed view A from the Fig. 2 represents. The two figures show a lift in backpack construction, in which the drive carrier 4 rests on double elastic damping elements A 1, which in turn have both sides mounting plates 7 and stand on brackets 16. The damping elements A 1 have two damping layers 2 and an interposing calming mass 3.

The brackets 16 are connected via rail plates 23 with the guide rails 10, wherein the rail back 17 of the two guide rails 10 are aligned for standing on a car support frame 11 car 18 to each other.

Furthermore, on both sides of the drive carrier 4 a total of 4 lateral abutment surfaces 5, which prevent a tilting of the drive carrier 4 by interaction with a fixed abutment 8. Between the two-sided abutment surfaces 5 and 4 abutments 8, a damping element B 6 is fixed, which serves the lateral damping. This damping element B 6 is simply elastic. The abutment 8 are attached to the guide rails 10 for the car 18.

The guide rails 10 for the car 18 extend beyond the drive. In the upper part of the guide rails 10 for the car 18, a pair of rail brackets 24 is arranged, which forwards the torque of the anvil as horizontal forces in the shaft wall 14. The guide rails 12 for the counterweight 13 terminate below the drive carrier 4. The car 18 passes on from motor 9, traction sheave 15 and brake existing drive over. As a result, the shaft head must be made only slightly larger than the car height.

In the present embodiment, the entire drive package consisting of drive, drive carrier 4, brackets 16 and thrust bearing 8 is not wider than the motor 9. This is achieved by the drive carrier 4 is in the projection plane of the traction sheave 15. The drive is between the guide rails 10 for the car 18, which are guided upwards on the drive. To reduce the motor size, a 2: 1 suspension was selected and the cable strand is divided into two partial strands which are deflected by two narrow deflection rollers and guided back to the drive carrier 4 become. The support means 22 are shown only partially for reasons of clarity

The unusable by the passenger space between the car 18 and shaft wall 14 is minimal by this structure and the car can drive past the drive package. It is claimed for the double-elastic storage of the shaft width no larger space than is needed anyway for the drive.

All forces and torques occurring on the drive carrier 4 are taken up by the guide rails 10 for the elevator car 18 and discharged into the shaft pit and into a shaft wall.

REFERENCE NUMBERS

1

Damping element A (double elastic)

2

damping layer

3

sedative mass

4

drive carrier

5

stop surface

6

Damping element B (single elastic)

7

mounting plate

8th

thrust bearing

9

engine

10

Guide rail for the car

11

Car-carrying frame

12

Guide rail for the counterweight

13

counterweight

14

shaft wall

15

traction sheave

16

console

17

seemed back

18

car

19

support beam

20

console

21

wall niche

22

support means

23

Mounting Bracket

24

Cross channel

Claims (9)

Traction hoist elevator in backpack construction with the following features: - At least one drive, consisting of motor (9), traction sheave (15) and brake is attached to at least one drive carrier (4), to support it, at least one of the drive carriers (4) rests on at least two damping elements A (1), - Each damping element A (1) by means of a respective bracket (16) to the rail back (17) of the two guide rails (10) for the car (18) attached, wherein a damping element A (1) consists of at least two damping layers (2) which are separated from one another by at least one soothing mass (3), - The rail backs (17) of the two guide rails (10) for the car (18) are aligned, - At least one drive carrier (4) is connected via laterally arranged abutment surfaces (5) with at least one fixed abutment (8) and secured against rotation, wherein - Between the laterally arranged abutment surfaces (5) and the abutments (8) elastic damping elements B (6) are arranged. Elevator according to claim 1, characterized in that the damping layers (2) of a damping element A (1) are formed differently hard. Elevator according to claim 1 or 2, characterized in that the damping layers (2) of a damping element A (1) have different damping characteristics. Elevator according to one of claims 1 to 3, characterized in that the drive between the guide rails (10) for the car (18) is located. Elevator according to one of claims 1 to 4, characterized in that the two guide rails (10) for the car (18) are extended upwards and past the motor (9). Elevator according to one of claims 1 to 5, characterized in that at least one bracket (16) is connected to at least one shaft wall (14). Elevator according to one of claims 1 to 6, characterized in that the elevator is designed as a machine room-free traction sheave elevator. Elevator according to one of claims 1 to 7, characterized in that at least one drive carrier (4) in the projection plane of the traction sheave (15) is arranged. Elevator according to one of claims 1 to 8, characterized in that the drive, the drive carrier (4) and the damping elements A (1) are arranged outside the projection surface of the car (18).

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