KR20020062284A - Lift with a car attached to a support - Google Patents

Abstract

The invention relates to a completed drive system for the elevator (1) attached to the support (8). And the elevator can be lowered along the elevator passage in a flexible manner with regard to positioning. The motor torque is transmitted to the support for the flat drive wheel and the lift via belt drive. And the belt is composed of a flat belt or synthetic fiber cable wound directly around the hub 17 of the drive wheel (5).

Description

Elevators with lifts attached to supports {LIFT WITH A CAR ATTACHED TO A SUPPORT}

In the past, elevators in buildings have been developed that do not require additional machine rooms for the elements of the support and the movement units of the hoist room. In this connection, a drive is known in which the shaft wall is pressed flat and there is a space in the region of the side between the wall and the cage.

Motors of this kind are implemented without gears or with specially designed gears. Such a configuration has a correspondingly expensive special configuration.

Furthermore, a German utility model DE 298 65 26 U1 discloses a lift drive comprising a pulley and sheave coaxially connected to each other. The pulley and sheave of the drive unit are combined to form a flat drive wheel connected to the drive motor by belt drive. The pulley acting on the support rope and the drive motor connected to each other are spatially separated by belt drive. Thus, the drive motor may be disposed at a predetermined position spatially separated from the sheave. This allows for a more flexible adaptation to the conditions of the place.

However, since the possibility of implementing a slower movement with one-stage belt drive is limited, a drive motor having a relatively strong torque is required. If a standard motor is used without the use of a specially designed and costly special structure for the drive motor, the motor will grow and the width along the axis of rotation of the motor will be greater than the width of the drive wheel. . In other words, the motor side protrudes into the outboard frame passage supporting the drive wheel and the drive wheel.

This means that the drive wheel can be accommodated between the passage wall and the lift passage and / or the lift passageway through which the extension to its bottom or top passes. The motor, however, does not have sufficient space between the passage wall and the lift compartment and / or the lift passageway through which the extension to the bottom or top of the drive wheel is located. This will necessarily limit flexibility in motor placement. Thus, in the design cited earlier, the motor is placed in a pocket-shaped seat above the shadow space of the door fighter profile or below the lower profile of the door.

The invention relates to an elevator having a hoisting chamber attached to a support mentioned in the preamble of claim 1.

FIG. 1 is a cross-sectional view of a state in which the upper portion of the passage is cut in the longitudinal direction when the drive wheel and the drive motor are arranged in the upper region of the passage.

2 is a cross-sectional view taken along line III-III of FIG. 1.

3 is a cross-sectional view taken along the line IV-IV of FIG.

4 shows a detail of the V portion of FIG. 1.

FIG. 5 shows an improved embodiment of FIG. 1 in which the motor is housed in another location within the passageway, using a smaller structural size.

6 shows a cross-sectional view of a structurally improved drive wheel.

7 shows a cross-sectional view of a drive wheel that is structurally differently improved.

FIG. 8 shows another improved embodiment of FIG. 1 in which the motor is housed in another location at the bottom of the passageway, using a smaller structural size.

FIG. 9 shows another improved embodiment of FIG. 1 in which the motor is housed in another location at the bottom of the passage, using a smaller structural size.

Accordingly, it is an object of the present invention to make a support and drive unit provided in an elevator passage for a hoist room. And even with traditional drive motors, it is guaranteed that the drive motor can be placed on the shaft almost randomly.

The present invention solves this problem by an elevator driven by a synthetic fiber rope in which the support is wound around at least one flat belt or the hub portion of the direct drive wheel. The part at the corresponding position is then provided with a portion, such as a sleeve, showing the required sheave profile. The curve of conventional iron ropes should not be smaller than given while being struck by a sheave and should not be a poor curve radius. Otherwise, the bending stresses on the iron rope will exceed the maximum allowable fatigue strength limit. On the other hand, flat belts or synthetic fiber ropes can also be wound on sheaves with sufficiently smaller curve radii. This makes it possible to achieve very small sheaves by winding the flat belt directly around the hub of the drive wheel. In addition, a smaller torque acts on the sheave when a constant load is applied to the support belt. The torque required from the drive motor is reduced. Therefore, no motor can be used in the case of a standard motor made small enough while allowing it to be accommodated in a completely different position within the elevator passage.

In this respect, it is particularly advantageous that a drive motor of such size can be used without including the pulley supported by it, without exceeding the axial width of the drive wheel. In this way, the drive motor can be housed on the same side as the drive wheel between the passage wall and the elevator compartment and / or the elevator passage through which its extension to the floor or top can pass.

Preferably at least partly the drive motor is arranged in a pulley supported by the motor. This is made possible by the fact that the smaller driving speed acts on the drive wheel, since the pulley can be realized with a rather large diameter, and sufficient space is provided in the pulley for the motor element. Thereby, additional structural space for the motor is available.

In a more preferred embodiment, the drive motor is an external rotor motor whose outer rotor is designed for a pulley for at least one drive belt. In such a structure, the pulley does not require additional structural space in the axial direction of the motor, which again simplifies the use of a standard motor.

In a more advanced embodiment, there is an advantage that the hub supporting the sheave profile is made integral. This includes the advantage that separate sheaves and thus additional elements of cost and assembly time can be saved.

Preferably, the hub supporting the sheave profile, the circumferential brake friction surface, and the drive belt pulley are made integral. This reduces each element incurring additional costs. The drive wheels can be manufactured by clamping the clamps in a rational manner, if necessary, and from a precast or pre-welded material through a cutting process. There is no need to center each component of a fast-acting drive wheel.

In a particularly advantageous manner, the pulley is embodied by bending at a right angle to form an accommodation space for the brake means. That is, it consists of an inner space that is bent at right angles and a disk-shaped portion accompanying it in the radially outer side. It is then provided with a wheel rim on the outer circumference and operates with the drive belt over it. This creates an annular receiving space for the fixed elements of the brake. It no longer protrudes beyond the outer dimensions of the drive wheel.

Furthermore, if in an advantageous manner the bent at right angles forms a circumferential friction surface of the wheel rim which is operated on the outside with the drum brake or the drive belt over it, and inside the circumferential friction surface of the drum brake. If necessary, it is not necessary to arrange additional brake discs or brake drums on the hub. The structural space additionally available on the hub in the axial direction exists in particular for the width of the drive belt.

By combining the pulleys and sheaves with the circumferential friction surfaces of the brakes forming the drive wheels, a particularly flat unit can be produced which can be placed behind the side vertical guide rails.

Hereinafter, with reference to the drawings will be described in detail a preferred embodiment of the present invention.

1 to 4 show a first embodiment of the elevator 1 according to the invention. The elevator is provided with a vertical passage (2) for the lifting and lowering movement of the lifting chamber (3). In the upper portion 4 of the vertical passage 2, an elevator drive device composed of a drive wheel 5 and a drive motor 6 operating thereon is arranged. The drive may also be accommodated in other locations in the passage if necessary. The drive motor 6 is embodied as an external rotor motor, which is provided with a pulley for three parallel drive belts on the outer part of the rotor. The vertical passage 2 is closed at the top and the bottom and does not include a separate machine room.

The cross section of the vertical passageway is substantially larger than the cross section of the hoist room. Thus, there is a gap in all directions between the passage wall and the passage of the cage in a direction perpendicular to the movement direction of the cage. The drive wheel 5 is provided with a hub 17 formed on one side thereof by a sheave 16. The flat belt 8 is wound around the one side. The lifting chamber 3 is suspended in the flat belt 8. The flat belt 8 influences the lifting and lowering movement of the hoist room as it rotates along the correspondingly driven sheave.

The drive wheel 5 furthermore consists of a pulley 9 which supports a wheel rim 9a on its outermost diameter. And the drive belt 15 is caught outside the wheel rim (9a) to transmit the movement. Inside the wheel rim 9a is provided a friction surface 10 of the brake drum formed by the wheel rim 9a. Brake shoes (not shown in detail in the drawing) are pressed in a known manner on the friction surface. 1 to 4, the brake shoe (lining) is pressed against the inner surface of the wheel rim 9a by a spring with a corresponding preload applied outwardly circumferentially. During operation, a suitable (ie hydraulically driven) brake cylinder holds the brake shoes in a raised position against spring preload.

The pulley 9 (whether or not the friction surface 10-as shown in this embodiment-is provided for use by the elements provided in the pulley 9 or separately designed, such as the brake disc 21). ) And the sheave 16 provided on the hub 17 as well as the circumferential friction surface 10 of the brake are combined to form a drive wheel 5 having a flat structure. The drive wheel 5 is supported on the support frame 11 around a stable rotating shaft 12. Link 13 is connected to the support frame 11, which links 13 drive the drive motor 6. The link 13 is also exerted with tension from the drive belt 15 via a tension spring 14. Of course, various known tension elements can be considered here, including mechanical springs shown as tension springs as well as means for generating tension force hydraulically.

The rotary shaft 12 of the drive wheel 5 is arranged in the guide plane 25 of the vertical guide rail 24 connected to each other in the vertically long center plane of the hoist room 3 (FIG. 3). . The support frame 11 may be arranged in the space between the guide rail 24 and the side passage wall 26 to save space.

In the embodiment shown in FIGS. 1 to 4, the axis (not shown) of the drive motor 6 is the plane 20 of the door 22 preventing entry into the passage through the store (FIG. Is placed parallel to 2).

As fast running drive motors provide the required output as a relatively small sized device thanks to their high speed capacity, the motors face the cage in the direction of the cage, while the sides of the support frame 11 It does not protrude beyond the plane that arises, ie beyond plane 22 (FIG. 2).

Since the motor 6 is circumferentially circumscribed by the link 13, the structure according to the present invention does not need to be located above the door fighter profile 22 as shown in FIG. Thanks to the fact that the motor does not protrude beyond the plane 22 in the structure according to the invention, the motor, if necessary, is virtual to the passage wall and the movement passage of the cage and / or to the top and bottom of the passage. Enough space is secured between the extensions of the same side as the driving wheel. As described in the embodiment shown in FIG. 5, the motor is for example under the horizontal extension of the support frame 11 by a corresponding link (FIG. 2), the movement passage of the cage and the door. It may be arranged in the right space between the passage walls just above this open seat. For maintenance purposes, the motor is better accessible at this position.

As described in the embodiment shown in FIG. 8, for example, a motor may be connected by a corresponding link directly above the bottom of the shaft between the guide rail and the passage wall. In FIG. 8, the corresponding guide rails are drawn with dashed lines so that they are easily seen. In plan view, the motor is located behind and beyond the solid line portion of the guide rail, shown in dashed lines.

According to the embodiment shown in FIG. 9, the motor can also be arranged on the opposite side as compared to FIG. 8, below the threshold of the passage door.

FIG. 4, which is a detailed view of the portion marked V in FIG. 1, shows in more detail the design of the drive wheel, the frame of the drive wheel and the motor coupled to the drive wheel. FIG. 4 is a plan view from above, with the rotating shaft (bearing pin) and / or half of the upper part of the shaft 12 shown in cross section, and the other half of FIG. 4 located below the rotating shaft (bearing pin) shown in plan view. have.

It is shown how the drive motor 6, which is embodied as an external rotor motor with a pulley 6a provided outside the rotor, is fixed to the support frame 11 of the drive wheel via a link 13. The drive wheel 5 is driven through three V-shaped drive belts 15 operating in parallel with each other. The V-shaped drive belt 15 is shown in cross section at the connection of the link 13 in order to be visible on the connection of the link 13. The hub 17 of the drive wheel 5 is supported through two roller bearings on the bearings on both sides of the rotating shaft (bearing pins) 12 and the supporting frame 11, which are the rotating shafts of the driving wheel. do.

The hoist room is stopped and moved by the flat belt 8. The flat belt (8) is wound directly around the hub (17), for this purpose is formed around the hub (17) formed of a sheave profile required for the safe reception of the flat belt, i.e. It is. When using the flat belt 8, the sheave profile consists of two plate-like protrusions provided on both sides. Usually the drive belt is sufficiently machined inside (if any material with synthetic surface), so that no special rope grooves or the like need to be provided to prevent the flat belt from slipping. In that the wheel rim representative of the sheave is connected to the hub by a spoke or wheel disk, which is a radial intermediate member, the portion of the sheave 16 of the hub 17 on which the flat belt 18 is wound It is implemented similar to the sleeve. In this way, there is no need for a corresponding large outer diameter. The belt wound around the outer diameter of the hub is located as close as possible to the axis of rotation. In this area the hub has a suitable wall thickness in terms of strength and improved safety factor. The outer diameter of the sheave profile in contact with the belt is thus determined from the outer diameter of the bearing substantially located closest to (at least) the sheave profile. In particular, it is advantageous to ensure that the outer diameter of the profile in contact with the drive belt is not greater than the diameter corresponding to approximately 2½ times the outer diameter of the corresponding bearing.

As the drive belt exerts a force on the sheave through the relatively small lever arm, the motor torque for driving in this structure is reduced.

Although the flat belt 8 requires more space parallel to the axis of rotation as compared to conventional ropes, the drive wheel does not necessarily disadvantageously take up more space in the axial direction. The need for a belt connecting the motor and the drive pulley is also reduced due to the fact that a motor that runs faster and correspondingly has a weaker torque can be used. At the same time the drag force transmitted by the belt to the existing power flow decreases with substantially increasing speed. As a result, a narrower drive belt 15 can be used, so that a significant part of the structural space additionally required for the flat belt 8 in at least the axial direction becomes available.

In the embodiment shown in FIG. 4 the pulley 9 slides on the side flange of the hub 17 and is installed in a stable manner using, for example, a feather key in the direction of rotation, the shaft The direction is fixed according to the conventional method. Optionally, the hub and the drive pulley may be made integrally by a precast or pre-welded material. In this case, unlike steel belts, flat belts or synthetic fiber ropes are advantageous in that they do not wear the sheaves (and / or rope grooves that may be necessary in place). And for this reason it is no longer enforced that the sheaves must be exchanged individually.

In the embodiment shown in FIG. 4, the wheel rim 9a supporting the V-shaped drive belt 15 on the drive pulley 9 is provided with the friction surface 10 useful therein for the brake drum. It is made as possible. The brake shoes (linings) 19 on the pins 18 can be pressed outwards against the friction surface by hydraulic or mechanical brake drive mechanisms. This structure includes the advantage of operating on lever arms with very high braking forces. And this is the reason for the relatively large braking moments in the case of relatively low driving forces or relatively low dimension brake mechanisms.

6 shows a portion close to the axis of the improved drive wheel structure. The same reference numerals are used to designate elements that have the same function as in the preceding figures.

On the rotary shaft (bearing pin) 12 of the drive wheel 9, the hub 17 of the drive wheel 9 is supported by a bearing 14. The hub 17 has a sheave profile 16 for the flat belt 8. Here too, the flat belt is wound around a part located as close as possible to the axis. That is, substantially predefined by the outer diameter of the bearing 14 and the wall thickness of the hub.

The drive pulley 9 here also has an inside 9b which is bent at a right angle, and subsequently there is a disc shaped portion 9c and the wheel rim which moves the drive belt 15 thereon ( 9a) is formed on its outer diameter. The right angled portion is provided with a drum-like circumferentially extending portion 9d. In this way, the brake drum allows the brake shoes (lining) 19 to be pressed from the outside.

This improvement has the following advantages. As mentioned above, the reduced sheave diameter makes it possible to use a relatively narrow belt, so that the load of the belt 15 becomes relatively low, which is also relatively narrow of the wheel rim 9a of the drive pulley. The advantage is that it results in a structure. Furthermore, the sheave may be substantially smaller than the outer diameter of the brake drum, that is, the outer diameter of the extension 9d. Therefore, it becomes possible for the brake shoes (lining) 19 to protrude in the axial direction by the sheave on the side beyond the drive wheel 9. This opens up the possibility of driving the brake shoes (lining) on the rear side of the wheel rim using a brake linkage such as a conventional jaw. And to stop in the raised position during operation. If the hydraulic pump for the hydraulic drive is not accommodated in the shaft, and moreover, the price is expensive. This also brings intrinsic advantages. The brake drum and / or the extension 9d therein are advantageously very wide in size so that the torque produced by the eccentric driving force FBREMS, which tends to tilt the brake shoes (linings), causes the friction surface ( Blocked by 10).

7 shows a narrow area of the drive wheel in a further structurally improved embodiment. Elements that act the same are denoted by the same reference numerals that were used for corresponding elements in the previous embodiment.

With respect to the rotary shaft (bearing pin) 12 here, too, and the hub 17 are also supported by the bearing 14. The hub 17 is here again provided with a sheave profile 16 which is designed for receiving the flat belt 8, defined by the bearing diameter and the wall thickness of the hub substantially in the area close to the axis. In practice, it is possible to make the hub 17 at least part of the brake disc 21 as long as the flat belt does not cause any wear in the sheave. The same also applies to the drive pulley 9.

A brake shoe (lining) 19 which is pressed against the brake disc and is under preload and is held (preferably hydraulically) in an elevated position during operation, is attached to the brake caliper and operates on the brake disc.

In each embodiment a hydraulic brake drive is provided (not shown in the figure) to provide a pressure generator reservoir, in case of failure of the pump driving the pressure generator, for example in the event of a power supply failure, It is possible to supply the hydraulic pressure of the brake manually. Thereby the elevator 3 can be moved to any point, for example for structural purposes.

Claims (16)

An elevator 3 is provided, which is held by a support 8, which is operated by a sheave 7 on the support 8 and is arranged in the passage 2 by the drive motor 6. ) Is capable of up and down movement in the passage (2) with vertical extension, the drive motor (6) with respect to the pulley (9) arranged axially in parallel through one or more drive belts (15). And the pulley 9 is coaxially coupled to the sheave to form a flat drive wheel 5, the circumferential friction surface of the brake being in the elevator 1 provided in the drive wheel 5. , The support 8 consists of one or more flat belts or synthetic fiber ropes which are wound directly on a part on the hub 17 of the drive wheel 5 and the corresponding on the hubs on which the flat belts or synthetic fiber ropes are wound. An elevator with a hoist attached to a support, characterized in that said part of the position has a predetermined sheave profile to form a sheave (7). The hub (17) according to claim 1, wherein the outer diameter of the wound surface of the sheave profile is significant in relation to the outer diameter of the bearing (14) close to the sheave profile (6) and in terms of stability and rigidity in this region. And a lift chamber attached to the support, characterized in that it substantially corresponds to a dimension plus twice the wall thickness of the sleeve-shaped portion. 3. A support according to claim 1 or 2, characterized in that the width of the drive motor including the pulley 6a supported by the motor in the axial direction does not exceed the width of the drive wheel 5 in the axial direction. An elevator with a lift attached to it. 4. Elevator according to any one of the preceding claims, characterized in that the drive motor (6) is a disc amateur motor. 5. Elevator according to any one of the preceding claims, characterized in that the drive motor (6) is arranged in the pulley (6a), which is partially supported by the motor. . 6. The drive motor (6) according to any one of the preceding claims, wherein the drive motor (6) is an external rotor motor whose outer rotor is configured as a pulley for at least one drive belt (15). Elevator with lift room. 7. Elevator according to any one of the preceding claims, characterized in that the hub (17) supporting the sheave profile (16) is made integrally as a whole. 8. The hub (17) according to any one of the preceding claims, characterized in that the hub (17) supporting the sheave profile (16) and the circumferential friction surface (10) of the brake are made in one piece. An elevator with a lift attached to the support. 9. The hub 17 according to claim 1, wherein the sheave profile 16, the circumferential friction surface 10 of the brake, and the hub 17 supporting the pulley 9 are integrally formed. Elevator with a lift attached to the support, characterized in that the production. 10. The pulley (9) according to any one of the preceding claims, wherein the pulley (9) protrudes out of the sheaves (16, 17) and is bent at right angles to form a space for receiving the brake means (18, 19). In form, i.e., bent at right angles, the outer circumferential surface of which the belt is moved is supported by the wheel rim 9a and the disc-shaped portion 9c is formed in the shape that follows in its outer radial direction. Elevator with a lift attached to the support characterized in that. 11. A support according to any one of the preceding claims, characterized in that the part 9b, which is bent at right angles outward when viewed from the axis of rotation, forms a circumferential friction surface 10 of the drum brake. Elevators with attached lifts. 12. The circumferentially curved portion 9b according to any one of claims 1 to 11 is constituted by a circumferential extension portion 9d that forms a circumferential friction surface of the brake drum and is viewed in the axial direction. An elevator equipped with a hoisting chamber attached to a support, characterized in that the extension (9d) protrudes out of the outermost edge of the wheel rim (9a). 11. The wheel rim 9a according to any one of claims 1 to 10, wherein the wheel rim 9a on which the drive belt is hung upon it forms the circumferential friction surface 10 of the drum brake therein. Elevator with a lift attached to the support characterized in that. 14. A support according to any one of the preceding claims, wherein the flat belt (8) is made of steel, made of synthetic fiber material, or made of a combination of synthetic fiber material and steel. Elevator with lift room. The guide of the vertical guide rail (24) according to any one of claims 1 to 14, wherein the rotary shaft (12) of the drive wheel (5) is connected to a vertically long central position of the hoist room. An elevator equipped with a hoisting chamber attached to a support, characterized in that it is disposed in the plane (25). The speed of the drive wheel (9) is decelerated at low speed with respect to the speed of the drive motor (6) and the hoist room and the hoist room is connected to the support in the block. An elevator with a hoist attached to a support, characterized in that it is suspended (i.e. at a ratio of 2: 1).