FI118423B - Elevator and lift hoisting machinery - Google Patents

Description

118423

LIFT AND LIFT LIFTING MACHINE

The invention relates to an elevator as disclosed in the preamble of claim 1 and to an elevator hoisting machine as described in the preamble of claim 10.

The present invention relates mainly to a non-machine room elevator with a disk-like, substantially flat hoisting machine, wherein the hoisting machine is substantially mounted on one or more rails in the elevator shaft 10. The lifting machinery is then on the surface, for example, in the space between the elevator car and the shaft wall.

Fastening arrangements of the elevator hoisting machine 15 in which the hoisting machine is attached to the guides in the shaft are known in the art. One known solution is disclosed in EP 0688735. This solution discloses a flat machine structure for use in elevators disposed in an elevator shaft so that no separate machine room is required. The machine is attached directly or by means of a suitable auxiliary frame to the guide in the elevator shaft.

Typically, the lifting mechanism is attached by means of an auxiliary frame to the platform guide so that the lifting mechanism is completely at the side of the platform guide. The solution works as such at very low ·· * 25 speeds, but at higher speeds there are vibrations in the machine which must be eliminated, for example, by the addition of an asymmetric mass body to the t *! * Support frame or the like. The problem is that the mass piece increases the thickness of the · · · ··· fastener structure in the depth direction, where · «· *. ···. 30 such a structure is not suitable for narrow shafts.

From EP 1327598 Ai there is known a solution in which the fastening of the machine is by means of a rigid support structure, but without the fastening being particularly adapted to narrow shafts. .

··· * · • · ···

The disadvantage of all known solutions is the · · • · '* of the machine. space requirement in the elevator shaft due to placement. The size of the machine itself and the size of the mounting base of the machine occupy 2,118,423 elevator cross-sections and thus reduce, for example, the cross-section of the elevator car that fits into the shaft.

It is an object of the present invention to eliminate the aforementioned drawbacks and to provide a cost-effective and space-saving mounting mechanism for a lift hoisting machine which allows a larger elevator car to be used in the same shaft and which allows a lower bending moment on the structure.

10

The elevator according to the invention is characterized by what is presented in the characterizing part of claim 1 and the lifting machine according to the invention is characterized by what is presented in the characterizing part of claim 10. Other embodiments of the invention are characterized by what is set forth in the other claims. Inventive embodiments are also disclosed in the specification of this application. The inventive content contained in the application may also be defined otherwise than as claimed in the claims below. The inventive content may also consist of several separate inventions, especially if the invention is viewed in the light of its expressions or implicit subtasks, or in terms of the benefits or classes of benefits achieved. In this case, some of the attributes of the following claims may be redundant for the separate inventive ideas.

· * · • φ · φ · φ φ φ

The advantage of the elevator and the lifting machine according to the invention are 30 mm. cross-sectional space saving in the elevator shaft, where · * · .. can accommodate, for example, φ. ***. larger elevator car. The mounting arrangement utilizes • · t of free space in the machine, which is advantageously located • • above the drive wheel. When the machine is suspended from a guide bar in accordance with the invention • · φ * ... * 35, the machine! * · *; the sides save space by joh φ the thickness of the guide or the mounting beam, which is preferably up to about 10 cm. This is a significant addition to the elevator car. The advantage is also the robust 3 118423 mounting solution and the reduction in the bending moment on the structure from the machinery due to the central suspension.

The invention will now be described in more detail with reference to one embodiment, with reference to the accompanying drawings, in which Figure 1 schematically shows an elevational view of an elevator structure to which the fastening arrangement according to the invention fits, Figure 2 shows a top view of the shaft; 2, viewed from above at the top of the elevator shaft.

Fig. 1 schematically shows an elevator structure in which the fastening arrangement according to the invention can be well used.

Preferably, the elevator is a non-engine room elevator, in which the drive mechanism 6 is located in the elevator shaft. The elevator shown in the figure is a traction sheave elevator of the highest type. The elevator hoisting rope t ... # 3 is positioned, for example, so that the hoisting rope 3 is • · "* at one end fixedly fixed at the top of the shaft • · · * ··; * 25 counterweights in the guides 11 moving counterweights in 2 movement paths ·· · · * · ί at anchorage 12 above, from which the rope * ·· exits downward facing the counterweight suspension pulleys 9 rotatably attached to the counterweight 2. The rope rope 3 further extends upwardly through the pulleys 30 5 to the traction sheave 7 of the drive mechanism 7, which · * · .. rope crosses traction sheave 7 along rope groove From traction sheave 7 · ** rope rope 3 continues downward to deflection pulley 5, which it · · · rotates along deflection pulley slope returning up • · · * · * * traction sheave 7 over rope sheave second time ·· »* ... * 35 traction rope grooves 7 traction rope 3 continues · * · *: down through the rope grooves of the diverting wheel 5 in the elevator car rails • · 10 to the moving elevator car 1, below the elevator car and rotating • · the diverting wheels 4, by means of which the elevator car is suspended to 118423 ropes. The rope assembly 3 continues from the elevator car upwards to the anchorage point 13 at the top of the shaft, to which the rope assembly 3 is fixedly attached at one end.

Preferably, the anchorage point 12 at the top of the shaft, the traction sheave 7, the diverting pulley 5 and the deflection pulley 9 hanging from the counterweight rope are disposed such that the rope portion from the attachment 12 to the counterweight 2 and the 10 direction. It is likewise advantageous that the anchorage point 13 at the top of the shaft, the drive wheel 7, the diverting wheel 5 and the diverting wheels 4 hanging from the elevator car rope are disposed so that the rope part from the attachment point 13 to his-15 and 1 via the diverting wheel 5 each substantially parallel to the movement path of the elevator car 1. In this case, no additional folding wheels are needed to position the passage of the rope in the shaft.

20

The rope between the traction sheave 7 and the sheave 5 is called the double-wrap rope, in which the rope is made to rotate the traction sheave two and / or more times. This allows the grab angle to be raised in two and / or more sections. For example, • # · ··· '· the angle of engagement between the drive wheel 7 and the hoisting rope 3 ··· m · * ···' is obtained in the embodiment shown in Fig. 1 by 180 ° + 180 ° or * “* 360 °. The double-wrap rope shown in the figure can be arranged differently, such as by positioning the diverting pulley 30 on the side of the traction sheave, so that as the rope is twisted, the traction sheave is twisted to 180 ° + 90 ° ···. · * T * or 270 °, or by positioning the flywheel for another purpose ··· 5. · ·. The effect of the rope suspension on the elevator car 1 is • · · essentially central to the suspension of the elevator car; The ropes 4 are disposed substantially symmetrically with respect to a vertical center line passing through the center of gravity of the elevator car 1. An advantageous solution is to position the drive wheel 5 118423 7 and the diverting wheel 5 so that the diverting wheel 5 acts at the same time as a guide and damping wheel for the hoisting rope 3.

Preferably, the drive mechanism 6 located in the elevator shaft is flat, i.e., thin relative to its width and / or height, or at least slender so that it fits between the elevator car and the elevator shaft wall. As such, the machine may be positioned in other ways, for example, such that the slender machine is partially or completely disposed between the imaginary extension of the elevator car and the wall of the shaft.

It is advantageous to place in the elevator shaft the equipment necessary for the power supply of the motor rotating the drive wheel 7 and the equipment necessary for the control of the elevator, all of which may be located in the common dashboard 8 or then apart or partially or fully integrated with the drive 6. The drive mechanism 6 may be geared or non-geared. The preferred solution is a gearless mechanism comprising a permanent magnet motor.

20

It is also an advantageous solution to build a complete unit with a platform mounted on both the elevator drive gear with the ... # ... φ castors and the drive / drive wheels used to increase the grab angle • · ** * with 25 * right drive wheels The operating angle is determined by the ··· • ”j rope used between the traction sheave and the pulleys / pulleys, which determines how the unit is pre-arranged between the traction sheave and the pulleys / pulleys · ·· ϊ ,,, ί and unit relative to each other This unit 30 may be mounted in its entirety in the same way as a drive mechanism · * · ,, The drive mechanism may be secured to a t shaft, ceiling, guide or rails or ··· to another structure such as beam or rack.

Fig. 1 shows an advantageous 2: 1 suspension, but the invention ** · * · can also be implemented in an elevator with a suspension ratio of 1: 1, in other words in an elevator. , where the hoisting rope attaches directly to the counterweight and the elevator car without an impeller. Other hanging solutions are also possible in the practice of the invention. For example, an elevator according to the invention can be implemented with suspension ratios of 3: 1, 4: 1 or even higher. The counterweight and the elevator car may also be suspended such that the counterweight is suspended at a suspension ratio n: 1 and the car is suspended at a suspension ratio m: l where m is an integer and at least 1 and n is an integer and greater than m.

The attachment arrangement of the hoisting machine shown in the embodiment of the invention includes a stiffener 23 attached to a hoist frame body 19 having a stator, hereinafter referred to as a stator frame, mounted on the elevator shaft 15 substantially vertical and extending substantially across the stator frame. The stiffener 23 may be an integral part of the stator body 19, i.e. the same casting member, or the stiffener may be a separate body to be attached to the stator body. In addition, it is possible to integrate at least one pulp body 22 as an integral part of the stator body 19, which is arranged to form a mass distribution or bending stiffness of the stator body substantially ... asymmetric.

Fig. 2 shows an arrangement of the upper ends of the elevator car guide 10 in the elevator shaft. In this example the elevator structure is different from the one shown in Fig. 1 .. * · * elevator structure. The upper ends of the guides 10 have a substantially horizontal circumferential steel structure 20 which connects the upper ends 30 of the guides 10 to one another. The circumferential structure 20 includes at least · * ·,. a substantially horizontal support beam 15 with bearing, ·· *. two diverting pulleys 16 and a lifting mechanism * ··· in the center of which is mounted by means of a vertical securing device 18.

• »· * · * * In addition, the circular structure has a further deflection wheel 14 • e · 35 and attachment holes for securing the guide structure to the shaft.

· * · * · Fixed to the shaft wall or similar • · ....: eg with fastening bolts 21.

• · 7 118423

In the lower part of the stiffening and supporting stiffener 23 there is a cylindrical projection 24 near the drive wheel 7, a suitable distance below the drive wheel, which extends from the stiffener 23 towards the hoisting machine, i.e. from the elevator car 15. The projection 24 forms an axis for the diverting pulley 5, which is mounted on the projection 24 to rotate freely beneath the traction sheave 7. The diverting wheel 5 enables the aforementioned double-wrap suspension to increase the gripping angle with the traction sheave 7 and thereby the frictional force 10 obtained by friction. The diverting wheel 5 is substantially the same diameter as the traction sheave 7, whereby the diverting wheel 5 can also act as a damping wheel, whereby the ropes 3 leaving the traction sheave 7 to the counterweight 2 and the elevator car 1 pass through the rope grooves of the diverting wheel 5. In this case, the ropes departing from the traction sheave merely anchor the diverting pulley 5. Such anchoring serves as a solution to dampen the vibrations of the outgoing ropes and is also applicable in other rope solutions such as so-called rope sheaves. single-wrap-20 hanging. The diverting pulley 5 may also have a diameter different from that of the traction sheave. It is also possible with the aid of said diverting pulley 5 to carry out so-called. X-wrap suspension with suspension ropes • ♦ *** arranged to cross each other so that • · ♦ * ··· * 25 pull ropes and return rails ··· ··· '* cross each other . In this case, ·· the deflection wheel 5 is pre-mounted on a «base» in stiffener 23 which allows the deflection wheel to be mounted directly * * · at right angles to the traction sheave quickly and easily.

· ♦ • · • ··. · * ·. Figure 2 illustrates well the retractable structure of the upper part of the stiffener 23, which is characteristic of the idea of the invention, forming a ♦ · * · * 'recess 17 immediately above the drive wheel.

35 The drive wheel is not shown in Figure 2. The recess 17 extends a! * · *. from the stiffener 23 to the hoisting machine, i.e. in the embodiment of the invention, away from the elevator car 1. The figure does not show the mounting holes in the rear wall of the recess 17, through which the stiffener 23 attached to the hoisting machine is fastened to the fixing member 18, which is a beam in the form of, for example, a rectangular tube. The lower end of the fastening member 18 is retained inside the recess 17 when it is fastened. Thus, the fastening member 18 is substantially above the drive wheel 7 and substantially within the vertical volume formed by the cross-section of the drive wheel 7. The upper end of the fastening member 18 is fastened, for example, by means of fastening bolts to the support beam 15, as already indicated.

10

Figure 3 is a plan view of the solution according to the invention. Figure 3 shows that the elevator according to the exemplary embodiment is a so-called elevator. a rucksack-like elevator, in which the elevator car 1 passes on the side of a guide line 15 formed by the guides 10, guided by guide rollers 25. The cross-section of the rectangular circular steel structure 20 retains a counterweight 2 with its guides 11 as well as most of the elevator hoisting machinery. Referring to Figure 3, it is readily apparent how the lifting gear can be moved away from the elevator car 20 by locating the lifting attachment member 18 in a U-shaped recess 17 in the upper portion of the stiffener 23, opening in the direction of the elevator car 1 as close as possible to the surface of the elevator car 1. The elevator car 1 may be wider in this direction 25 for a corresponding distance.

·· «• · • *« **

It will be apparent to one skilled in the art that the invention is not limited to the above example, but may vary within the scope of the following claims. Thus, the invention is not necessarily limited to, for example, double-wrap type * ·· * length elevators, but the lifting machinery may likewise be mounted on single-wrap type elevators, in which the i ** diverting wheel 5 is positioned in the same manner as above. ... · shown, but the lifting ropes only rotate once around 35 drive wheels. In this case, the lifting ropes can also be controlled, ···. cross with the help of the scroll wheel 5, which makes the grab angle • · *** greater than 180 degrees. In addition, ·· ·: It will be clear to one skilled in the art that the flywheel 5 can be left completely * · 9 118423 depending on the suspension solution.

Similarly, it will be apparent to one skilled in the art that the position and method of hanging may differ from the above. Likewise, the structure 5 of the stiffener and its integration into a body having a stator may be different from those described above.

It will also be apparent to one skilled in the art that the mutual structure and compatibility of the recess 17 with the fastening member 18 may also be implemented in various ways. The recess 17 may be replaced, for example, by a rectangular pin-like structure or the like, on which is mounted a hollow fastening member having an interior cross-sectional shape similar to a pin-like structure but larger enough to fit over a sufficiently long distance over the pin-like structure. Likewise, the attachment may be implemented with pairs of attachment lugs or the like. What is common to all fastening solutions, however, is that the fastening is carried out in the clearance above the cross-section of the drive wheel.

20

It is still clear that the solution of the invention can equally be applied to counterweight elevator solutions.

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Claims (10)

An elevator, provided with a lifting machine carried by at least one guide, said lifting machine comprising a frame 5 (19) with a stator and a rotatably stored unit in relation to the body, which unit is formed by at least one drive plate (7) and a rotor body, which body (19) in a stiffener (23) supporting the body is attached to at least one guide by means of a fastening element (18), characterized in that the fastening element (18) is substantially above the drive plate (7) and substantially inside it. the vertical volume determined by the cross-section (7) of the drive disk (7) is attached to the stiffener (23). 2. Fastening arrangement according to claim 1, characterized in that the stiffening (23) is fixed at its upper end to the fastening element (18), the upper end of the fastening element being attached to the supporting beam (15) joining the guides (10). Fastening arrangement according to any of the preceding claims, characterized in that the stiffening (23) has at its upper end a recess (17) extending towards the lifting machine, in which the lower end of the fastening element (18) is placed. • · · «·· 25 4. Fastening arrangement according to any of the preceding claims, characterized in that the recess (17) opens to the elevator car (1). ♦ * # ·· • * · ::: 5. Fastening arrangement according to any of the preceding claims, characterized in that the recess (17) is substantially above the drive disk (7) and substantially inside ·· The vertical volume determined by the cross section of the drive disc (7). · · · · · · · · ·· 6. Attachment arrangement according to some of the foregoing • · ·. ···. The claims according to the claims, characterized in that the stiffening (23), preferably below the drive plate (7), is provided with a for fastening (24) of a bearing intended foundation extending towards the elevator machinery, on which foundation an extra, freely rotating break disk (5) is stored. 5 Mounting arrangement according to any of the preceding claims, characterized in that both the base for attaching the drive plate bearing, which forms the axis of the drive disc (7), and the foundation for attaching (24) of the bearing, which foundation forms the additional break plate (5). ) shaft, are firmly integrated into the stiffener (23). Mounting arrangement according to any of the preceding claims, characterized in that the bearing surface of the drive disc and the bearing surface of the auxiliary disc are machined to each other at such an angle that the plane of rotation of the drive disc differs from the plane of rotation of the auxiliary disc so that the support lines between the drive disc one that is as presumptuous as possible for the function. 20 9. Fastening arrangement according to any of the preceding claims, characterized in that the stiffener (23) is a continuous casting piece. • · Ml. 25 Elevator machinery, comprising eating at least one body (19) as # · ί · *. ·, Supports eating at least one guide (10) in the elevator shaft, provided * 1 «with a stator and a drive disc (7) and a rotor body as • · · * "Forms a fixed unit, which unit is rotatably stored in the ··· ·· * 'relation to the body (19), and which elevator machinery is · * *·· * 30 attached to a stiffener (23) supporting the body (19), which stiffening by means of a fastener (18) is attached to at least one guide (10), characterized in that the ··· fastening element (18) is fastened to the stiffening ( 23) above. ···, the drive disk (7) and substantially within the vertical volume determined by the drive disk (7) • * ·· * ·· ♦ • · · • · • · # • ·