EP1493708A2 - Drive for elevators and goods hoists - Google Patents
Drive for elevators and goods hoists Download PDFInfo
- Publication number
- EP1493708A2 EP1493708A2 EP04015126A EP04015126A EP1493708A2 EP 1493708 A2 EP1493708 A2 EP 1493708A2 EP 04015126 A EP04015126 A EP 04015126A EP 04015126 A EP04015126 A EP 04015126A EP 1493708 A2 EP1493708 A2 EP 1493708A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- car
- counterweight
- shaft
- drive according
- belt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/04—Driving gear ; Details thereof, e.g. seals
- B66B11/043—Driving gear ; Details thereof, e.g. seals actuated by rotating motor; Details, e.g. ventilation
- B66B11/0484—Driving gear ; Details thereof, e.g. seals actuated by rotating motor; Details, e.g. ventilation with a clutch or a coupling system between several motors, e.g. switching different speeds, progressive starting, torque limitation, flywheel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/0065—Roping
- B66B11/008—Roping with hoisting rope or cable operated by frictional engagement with a winding drum or sheave
- B66B11/009—Roping with hoisting rope or cable operated by frictional engagement with a winding drum or sheave with separate traction and suspension ropes
Definitions
- the present invention relates to a drive for elevators and goods hoists.
- elevators and goods hoists have a car whose dimensions are variable depending on the installation site and on the operating requirements.
- the car is provided externally with suitable safety elements that are adapted to act as a braking system if the elements that support it become damaged or even break.
- the elements designed to drive and support the car can be hydraulic or of the cable (or chain) type.
- the car is moved vertically within an appropriately provided shaft that is made of masonry or of other structural material, inside or outside the installation building, by means of cables (or chains) by a motor.
- the weight of the car and part of the load can be balanced by means of the presence of suitable counterweights, which are connected to the car by means of one or more metallic cables (the same cables used for traction), engaged in suitable sheaves, so that the car and the counterweight slide within the shaft along mutually parallel paths but with opposite directions.
- the cables that are used are usually cables made of metal or other materials with excellent mechanical qualities (composite fibers based on Kevlar, carbon or other synthetic materials).
- composite fibers based on Kevlar, carbon or other synthetic materials are usually cables made of metal or other materials with excellent mechanical qualities.
- toothed belts provides the same advantages as chains, combining them with considerable quietness, and toothed belts can advantageously replace chains; this entails a high comfort for the users of said elevator.
- the standard mandates the presence of an electromechanical brake that acts automatically if mains power fails or if the power supply of the control circuit fails.
- the aim of the present invention is to obviate the cited drawbacks and to meet the above-cited requirements, by providing a drive for elevators and goods hoists that can adopt commercial toothed belts, is provided with means suitable to maintain continuous mutual meshing of the belt and the pinion, and is provided with an element that is suitable to ensure the mutual slipping of the belts and the car when said car is stuck.
- the drive according to the invention can be connected to the car and to the counterweight by arranging the belts in a single or multiple tackle configuration in order to reduce the stress to which the motor is subjected.
- an object of the present invention is to provide a drive that is simple, relatively easy to provide in practice, safe in use, effective in operation, and has a relatively low cost.
- the present drive for elevators and goods hoists of the type that comprises a shaft inside which a car and a counterweight are guided so that they can slide parallel to each other in opposite directions, said car and said counterweight being connected by at least one toothed belt, which is functionally associated with a motor unit, characterized in that said toothed belt is of the commercial type and in that said motor unit has a torque limiting coupling interposed between the motor unit and a meshing pinion of said belt.
- the reference numeral 1 generally designates a drive for elevators and goods hoists.
- the elevator is constituted by a car 2 and a counterweight 3, which are connected respectively by toothed belts 4 (which are rigidly coupled on the upper surface thereof directly or by way of elastic means, such as helical springs), suitably guided by guiding sheaves 5, which are fixed on the upper or lateral surfaces of the installation shaft.
- the toothed belts 4 are substantially commercial belts with characteristics of high tensile strength and low deformation when loaded.
- the belts 4 be made of (or sheathed with) wear-resistant material, in order to ensure maximum safety, require limited maintenance and provide maximum quietness in operation.
- the toothed belts 4 indeed because they are of a commercial type and therefore are built to ensure the most compact possible matings, can advantageously be mated with driving pinions that have a small diameter (minimum diameter compatible with the type of belt even smaller than 50 mm) in order to transmit the required torque, ensuring reduced dimensions of the entire drive 1.
- a motor unit 6 is mounted in a fixed manner (for example, in the example of Figure 1, in an upper region in the installation shaft), and a torque limiting coupling 8, a pinion 9 for the meshing of the teeth of the belts 4, and a brake 10 are keyed on its motor shaft 7.
- the torque limiting coupling 8 prevents, when the car 2 and the counterweight 3 are already in an end-of-travel configuration (for example, the car 2 is at the top floor or not at the level of the floor, toward the top of the shaft, and the counterweight 3 rests on the bottom of the shaft), the motor 6 from continuing to provide driving torque to the belts 4, possibly damaging them (excessive stretching of the fibers), and worse still, making the car slam against the ceiling of the shaft.
- the coupling 8 is set so as to avoid its intervention during acceleration of the loaded ascending car.
- the pinion 9 has a set of the teeth that is complementary to the set of teeth of the belts 4, and is surrounded by a snug housing 9a, the internal surface of which is proximate to the surface of the back of the belts 4, thus keeping them correctly engaged in the pinion 9, preventing their escape, this precaution being necessary to avoid fleeting in case of slackening, as prescribed by the standard.
- This function might be obtained with any other component suitable for the purpose, such as for example a sliding block whose surface rests on the back of the belt 4 proximate to the portion where the belt 4 meshes with the pinion 9, or a plurality of rollers that are mounted freely in the same position and are designed to keep the belt 4 and the pinion 9 mutually engaged.
- the brake 10 can be of any kind and is designed to ensure the stable parking of the car at a given floor (in the examples shown in the figures, the brake comprises a disk 11 that is rigidly coupled to the shaft 7 and on which it is possible to close respective calipers 12).
- the brake 10 thus complies with the characteristics listed in the standard in relation to the electromechanical brake: it acts in fact automatically if mains power fails or if the control circuit power supply fails.
- the brake in order to comply with the standards, the brake must be capable on its own of stopping the system while the car is descending at nominal speed and with its capacity plus 25%.
- the assembly constituted by the motor 6, the coupling 8, the pinion 9 and the brake 10 can be installed in an upper region (as shown in Figures 1, 6, 11, 13, 15 and 16), in a lower region (as shown in Figures 2, 7, 12, 14, 17 and 18), or laterally within appropriate compartments provided along the lateral surface of the shaft at various heights (as shown in Figures 3, 4, 5, 8, 9, 10, 19, 20, 21 and 22). In any case, the assembly must be in an accessible position in order to ensure correct system maintenance.
- the belts 4 can be fixed directly to the upper surface of the car 2 and of the counterweight 3 (as shown in Figures 1, 2, 3, 4, 5, 11, 12, 13 and 14) or can be guided by means of appropriately provided sheaves 5 mounted on the upper surface of the car 2 and of the counterweight 3 so as to constitute a tackle, in practice reducing the stress to which the motor 6 is subjected (as shown in Figures 6, 7, 8, 9, 10, 15, 16, 17, 18, 19, 20, 21 and 22).
- the toothed belts 4 in fact merely perform traction, while cables 13 (for example) support the considerable loads of the car 2, the counterweight 3, and the payload.
- the supporting elements can be conventional cables 13 (as shown in Figures 11 to 22), flat belts, toothed belts, or other elements providing great tensile strength and low noise.
- the cables 13 also can be coupled directly to the upper surface of the car 2 and of the counterweight 3 (as shown in Figures 11, 12, 15, 17, 19 and 21), or can be guided by appropriately provided sheaves 14 mounted on the upper surface of the car 2 and of the counterweight 3, so as to constitute a tackle (as shown in Figures 13, 14, 16, 18, 20 and 22).
- load-bearing cables 13 wear less than in a conventional system, since they work on guiding sheaves 14 with races that have a semicircular profile without a notch: since they are not crimped within the races, they are less subject to wear.
- Each individual characteristic of the installation configuration related to the position of the motor 6, to the fixing of the belts 4 (provided directly or by means of a spring or by means of a sheave 5), to the fixing of the cables 13 (provided directly or by means of a sheave 14), can be combined with any other characteristic to provide a drive 1 for elevators and goods hoists according to the invention.
- the belts 4 are toothed and have a constant pitch, for each turn of the motor shaft 7 the car 2 covers a very specific and exact extent of its travel, and therefore the use of an encoder (or of another similar device that measures precisely the turns made by the shaft) allows to establish precisely the position of the car 2 by means of the control panel, eliminating the position transducers (known as shaft switches) that are traditionally arranged in the travel shaft.
- the shaft switches are installed only at the top and bottom floors.
- the retention brackets 15 of the cables 13, shown laterally adjacent to the car 2 and to the counterweight 3 proximate to their lower end, can be arranged in any position of the lateral surface to which they will be fixed.
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- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Cage And Drive Apparatuses For Elevators (AREA)
- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
Abstract
A drive for elevators and goods hoists, comprising a shaft inside which a car (2) and a counterweight (3) are guided so that they can slide parallel to each other in opposite directions, the car and the counterweight being connected by at least one toothed belt (4), which is functionally associated with a motor unit (6); the toothed belt (4) is of the commercial type and the motor unit (6) has a torque limiting coupling (8) interposed between the motor unit and a meshing pinion (9) of the belt (4).
Description
The present invention relates to a drive for elevators and goods hoists.
Currently, elevators and goods hoists have a car whose dimensions
are variable depending on the installation site and on the operating
requirements. The car is provided externally with suitable safety elements
that are adapted to act as a braking system if the elements that support it
become damaged or even break.
The elements designed to drive and support the car can be hydraulic
or of the cable (or chain) type.
In embodiments with cables (or chains), the car is moved vertically
within an appropriately provided shaft that is made of masonry or of other
structural material, inside or outside the installation building, by means of
cables (or chains) by a motor.
The weight of the car and part of the load (usually half) can be
balanced by means of the presence of suitable counterweights, which are
connected to the car by means of one or more metallic cables (the same
cables used for traction), engaged in suitable sheaves, so that the car and the
counterweight slide within the shaft along mutually parallel paths but with
opposite directions.
The advantage obtained by using counterweights is that the motor is
required only to provide the energy needed to move part of the load.
The cables that are used are usually cables made of metal or other
materials with excellent mechanical qualities (composite fibers based on
Kevlar, carbon or other synthetic materials). In order to ensure sufficient
tensile strength, it is necessary to resort to cables that have a relatively large
diameter, which due to mandatory standards require the adoption of large-diameter
sheaves; this drawback can be solved by using chains that mesh
directly with a respective pinion that has a much smaller diameter. Each
movement of the pinion is matched by a respective movement of the chain.
The use of chains is also prescribed by the standards currently in
force, and known examples of systems that use chains have existed for some
time.
The use of toothed belts provides the same advantages as chains,
combining them with considerable quietness, and toothed belts can
advantageously replace chains; this entails a high comfort for the users of
said elevator.
Besides, the use of toothed belts for horizontal and vertical
translational motion of masses in reciprocating motion has been used for
decades in various industrial fields.
The standard regarding elevators (UNI EN 81-1) requires, for clutch
sheaves, sheaves and pinions, the adoption of the precautions required to
avoid fleeting (i.e., the escape of the cable from the race of the sheave or the
skipping of teeth in the meshing of the pinion and the chain or belt) if
slackening occurs.
Secondly, the standard mandates the presence of an electromechanical
brake that acts automatically if mains power fails or if the power supply of
the control circuit fails.
Finally, the standard recommends provisions suitable to ensure cable
slip when the car is stuck in the shaft for any reason.
The aim of the present invention is to obviate the cited drawbacks and
to meet the above-cited requirements, by providing a drive for elevators and
goods hoists that can adopt commercial toothed belts, is provided with
means suitable to maintain continuous mutual meshing of the belt and the
pinion, and is provided with an element that is suitable to ensure the mutual
slipping of the belts and the car when said car is stuck.
Advantageously, the drive according to the invention can be
connected to the car and to the counterweight by arranging the belts in a
single or multiple tackle configuration in order to reduce the stress to which
the motor is subjected.
Within this aim, an object of the present invention is to provide a
drive that is simple, relatively easy to provide in practice, safe in use,
effective in operation, and has a relatively low cost.
This aim and this and other objects that will become better apparent
hereinafter are achieved by the present drive for elevators and goods hoists,
of the type that comprises a shaft inside which a car and a counterweight are
guided so that they can slide parallel to each other in opposite directions,
said car and said counterweight being connected by at least one toothed belt,
which is functionally associated with a motor unit, characterized in that said
toothed belt is of the commercial type and in that said motor unit has a
torque limiting coupling interposed between the motor unit and a meshing
pinion of said belt.
Further characteristics and advantages of the present invention will
become better apparent from the following detailed description of a
preferred but not exclusive embodiment of a drive for elevators and goods
hoists, illustrated by way of nonlimiting example in the accompanying
drawings, wherein:
With reference to the figures, the reference numeral 1 generally
designates a drive for elevators and goods hoists.
The elevator is constituted by a car 2 and a counterweight 3, which
are connected respectively by toothed belts 4 (which are rigidly coupled on
the upper surface thereof directly or by way of elastic means, such as helical
springs), suitably guided by guiding sheaves 5, which are fixed on the upper
or lateral surfaces of the installation shaft.
The toothed belts 4 are substantially commercial belts with
characteristics of high tensile strength and low deformation when loaded.
It is important that the belts 4 be made of (or sheathed with) wear-resistant
material, in order to ensure maximum safety, require limited
maintenance and provide maximum quietness in operation.
The toothed belts 4, indeed because they are of a commercial type and
therefore are built to ensure the most compact possible matings, can
advantageously be mated with driving pinions that have a small diameter
(minimum diameter compatible with the type of belt even smaller than 50
mm) in order to transmit the required torque, ensuring reduced dimensions
of the entire drive 1.
In the figures, the sets of teeth of the belts 4 and of the pinions or
rollers associated therewith for motion transmission are shown by means of
short black lines: this choice is dictated by the need to make the
comprehension of the figures compatible with the scale on which they are
shown. Elastic means for connecting the belts 4 or the sheaves 14 to the car
2 and the counterweight 3 (substantially helical springs) are also shown as
dark portions due to the described requirements of scale.
In this manner, the accelerating and braking torques are also reduced,
and the adjustment speed of the motor, for an equal speed of the car 2, is
higher and therefore the motor is more easily adjustable.
A motor unit 6 is mounted in a fixed manner (for example, in the
example of Figure 1, in an upper region in the installation shaft), and a
torque limiting coupling 8, a pinion 9 for the meshing of the teeth of the
belts 4, and a brake 10 are keyed on its motor shaft 7.
The torque limiting coupling 8 prevents, when the car 2 and the
counterweight 3 are already in an end-of-travel configuration (for example,
the car 2 is at the top floor or not at the level of the floor, toward the top of
the shaft, and the counterweight 3 rests on the bottom of the shaft), the
motor 6 from continuing to provide driving torque to the belts 4, possibly
damaging them (excessive stretching of the fibers), and worse still, making
the car slam against the ceiling of the shaft.
The coupling 8 is set so as to avoid its intervention during
acceleration of the loaded ascending car.
The pinion 9 has a set of the teeth that is complementary to the set of
teeth of the belts 4, and is surrounded by a snug housing 9a, the internal
surface of which is proximate to the surface of the back of the belts 4, thus
keeping them correctly engaged in the pinion 9, preventing their escape, this
precaution being necessary to avoid fleeting in case of slackening, as
prescribed by the standard. This function might be obtained with any other
component suitable for the purpose, such as for example a sliding block
whose surface rests on the back of the belt 4 proximate to the portion where
the belt 4 meshes with the pinion 9, or a plurality of rollers that are mounted
freely in the same position and are designed to keep the belt 4 and the
pinion 9 mutually engaged.
Even in case of intense traction on the belts 4, caused for example by
sudden jamming of the car due to a malfunction, with consequent rebound
of the counterweight, there would be no risk of said belts disengaging from
the pinion 9 and compromising the operation of the system.
The brake 10 can be of any kind and is designed to ensure the stable
parking of the car at a given floor (in the examples shown in the figures, the
brake comprises a disk 11 that is rigidly coupled to the shaft 7 and on which
it is possible to close respective calipers 12).
The brake 10 thus complies with the characteristics listed in the
standard in relation to the electromechanical brake: it acts in fact
automatically if mains power fails or if the control circuit power supply
fails.
It should be noted that in order to comply with the standards, the
brake must be capable on its own of stopping the system while the car is
descending at nominal speed and with its capacity plus 25%.
The assembly constituted by the motor 6, the coupling 8, the pinion 9
and the brake 10 can be installed in an upper region (as shown in Figures 1,
6, 11, 13, 15 and 16), in a lower region (as shown in Figures 2, 7, 12, 14, 17
and 18), or laterally within appropriate compartments provided along the
lateral surface of the shaft at various heights (as shown in Figures 3, 4, 5, 8,
9, 10, 19, 20, 21 and 22). In any case, the assembly must be in an accessible
position in order to ensure correct system maintenance.
The belts 4 can be fixed directly to the upper surface of the car 2 and
of the counterweight 3 (as shown in Figures 1, 2, 3, 4, 5, 11, 12, 13 and 14)
or can be guided by means of appropriately provided sheaves 5 mounted on
the upper surface of the car 2 and of the counterweight 3 so as to constitute
a tackle, in practice reducing the stress to which the motor 6 is subjected (as
shown in Figures 6, 7, 8, 9, 10, 15, 16, 17, 18, 19, 20, 21 and 22).
It is also possible to subject the belts 4 only to the force required for
movement, by assigning to other supporting elements the task of bearing the
loads, with the advantage of ensuring the support of the car 2 and of the
counterweight 3, achieving maximum safety in case of breakage of the belts
4: the other supporting elements allow activation of the classic safety
systems (braking system).
In this manner, the advantage of increasing system safety is added to
the advantages cited earlier: the toothed belts 4 in fact merely perform
traction, while cables 13 (for example) support the considerable loads of the
car 2, the counterweight 3, and the payload.
The supporting elements can be conventional cables 13 (as shown in
Figures 11 to 22), flat belts, toothed belts, or other elements providing great
tensile strength and low noise.
The cables 13 also can be coupled directly to the upper surface of the
car 2 and of the counterweight 3 (as shown in Figures 11, 12, 15, 17, 19 and
21), or can be guided by appropriately provided sheaves 14 mounted on the
upper surface of the car 2 and of the counterweight 3, so as to constitute a
tackle (as shown in Figures 13, 14, 16, 18, 20 and 22).
If load-bearing cables 13 are used, said cables wear less than in a
conventional system, since they work on guiding sheaves 14 with races that
have a semicircular profile without a notch: since they are not crimped
within the races, they are less subject to wear.
Each individual characteristic of the installation configuration related
to the position of the motor 6, to the fixing of the belts 4 (provided directly
or by means of a spring or by means of a sheave 5), to the fixing of the
cables 13 (provided directly or by means of a sheave 14), can be combined
with any other characteristic to provide a drive 1 for elevators and goods
hoists according to the invention.
The examples shown in the figures merely exemplify some of the
possible configurations that can be provided.
The operation of the invention is intuitive: the car 2 and the
counterweight 3 are moved by the motor 6 by means of the pinion 9.
The toothed belts 4, whose ends are rigidly coupled on the upper
surface of the car 2 and of the counterweight 3, in fact constantly have a
portion of their toothed surface that is engaged on the pinion 9, accordingly
associating rotations (both clockwise and counterclockwise) of the motor 6
with respective movements (upward or downward) of the car 2 (and
accordingly of the counterweight 3).
It should be noted that since the belts 4 are toothed and have a
constant pitch, for each turn of the motor shaft 7 the car 2 covers a very
specific and exact extent of its travel, and therefore the use of an encoder (or
of another similar device that measures precisely the turns made by the
shaft) allows to establish precisely the position of the car 2 by means of the
control panel, eliminating the position transducers (known as shaft
switches) that are traditionally arranged in the travel shaft.
In the unit 1 according to the invention, the shaft switches are
installed only at the top and bottom floors.
It has thus been shown that the invention achieves the intended aim
and object.
The invention thus conceived is susceptible of numerous
modifications and variations, all of which are within the scope of the
appended claims.
In all cases in which tackles have been described (guiding by means
of a sheave 5 or 14 of the belts 4 and of the cables 13 and subsequent fixing
thereof to a fixed surface, for example of the containment shaft) in order to
reduce the stress affecting some of the elements involved, it is evident that it
is always possible to combine a plurality of guiding elements (sheaves 5 and
14) in order to make the transmission ratio even more favorable.
All cases with load-bearing cables 13 and corresponding guiding
sheaves 14 can be understood with the arrangement shown in Figure 23, i.e.,
with the working planes of the cables 13 rotated through 90° and arranged
laterally with respect to the car 2. In this manner, the guiding sheaves 14 are
external to the protrusion of the ceiling of the car 2 if said car overtravels at
the top floor.
The retention brackets 15 of the cables 13, shown laterally adjacent to
the car 2 and to the counterweight 3 proximate to their lower end, can be
arranged in any position of the lateral surface to which they will be fixed.
All the details may further be replaced with other technically
equivalent ones.
In the described embodiments, individual characteristics, given in
relation to specific examples, may actually be interchanged with other
different characteristics that exist in other embodiments.
Moreover, it is noted that anything found to be already known during
the patenting process is understood not to be claimed and to be the subject
of a disclaimer.
In practice, the materials used, as well as the shapes and dimensions,
may be any according to requirements without thereby abandoning the
scope of the protection of the appended claims.
The disclosures in Italian Patent Application No. BO2003A000413
from which this application claims priority are incorporated herein by
reference.
Where technical features mentioned in any claim are followed by
reference signs, those reference signs have been included for the sole
purpose of increasing the intelligibility of the claims and accordingly such
reference signs do not have any limiting effect on the interpretation of each
element identified by way of example by such reference signs.
Claims (15)
- A drive for elevators and goods hoists, of the type that comprises a shaft inside which a car (2) and a counterweight (3) are guided so that they can slide parallel to each other in opposite directions, said car (2) and said counterweight (3) being connected by at least one toothed belt (4), which is functionally associated with a motor unit (6), characterized in that said toothed belt (4) is of the commercial type and in that said motor unit (6) has a torque limiting coupling (8) interposed between the motor unit (6) and a meshing pinion (9) of said belt (4).
- The drive according to claim 1, characterized in that said pinion (9) is surrounded by a snug housing (9a), the internal surface of which is proximate to the outer surface of the belt (4) wound around the pinion (9), said housing being adapted to keep the belt (4) correctly mated with the pinion (9), preventing its escape if the motion of the belt (4) is affected by events of various kinds.
- The drive according to claim 1 and as an alternative to claim 2, characterized in that said pinion (9) is proximate to a sliding block, one surface of which is in contact with the outer surface of the belt (4) wound around the pinion (9), said block being adapted to keep the belt (4) correctly coupled to the pinion (9), preventing its escape if the motion of the belt (4) is affected by events of various kinds.
- The drive according to claim 1 and as an alternative to claims 2 and 3, characterized in that said pinion (9) is proximate to a plurality of rollers having axes that are parallel to the axes of the pinion and are mounted freely so that their lateral surfaces are in contact with the outer surface of the belt (4) wound around the pinion (9), said plurality of rollers being adapted to keep the belt (4) correctly coupled to the pinion (9), preventing its escape if the motion of the belt (4) is affected by events of various kinds.
- The drive according to one or more of the preceding claims, characterized in that said toothed belt (4) engages within sheaves (5), which are coupled to the upper surfaces of the car (2) and of the counterweight (3), its ends being anchored to the ceiling of said shaft, constituting a tackle and therefore subjecting the motor unit (6) to reduced stress.
- The drive according to one or more of the preceding claims, characterized in that said car (2) and said counterweight (3) are connected to the ends of at least one second cable (13), which is engaged within guiding sheaves (14) anchored to the top of said shaft, said cable (13) being adapted to statically support the car (2) and the counterweight (3).
- The drive according to claim 6, characterized in that said second cable (13) is a belt.
- The drive according to claim 7, characterized in that said second cable (13) is a toothed belt.
- The drive according to claim 6, characterized in that said second cable (13) has a high tensile strength and a reduced emission of noise during operation.
- The drive according to claim 6, characterized in that said second cable (13) engages within sheaves that are mounted so that they can rotate freely on the upper surfaces of the car (2) and of the counterweight (3), the ends of said cable (13) being anchored to the top of said shaft, constituting a tackle.
- The drive according to one or more of the preceding claims, characterized in that said pinion (9) has a minimum diameter of substantially 50 mm.
- The drive according to one or more of the preceding claims, characterized in that a brake (10) is fixed to the motor shaft.
- The drive according to one or more of the preceding claims, characterized in that said motor unit (6) is mounted so that it is fixed on the top of said shaft in a position that can be accessed from outside for maintenance.
- The drive according to one or more of the preceding claims, characterized in that said motor unit (6) is mounted so that it is fixed at the base of said shaft in a position that can be accessed from outside for maintenance.
- The drive according to one or more of the preceding claims, characterized in that said motor unit (6) is mounted so that it is fixed within lateral compartments of the shaft that can be accessed from outside for maintenance.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ITBO20030413 | 2003-07-03 | ||
| ITBO20030413 ITBO20030413A1 (en) | 2003-07-03 | 2003-07-03 | HANDLING UNIT FOR LIFTS AND LOADERS. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1493708A2 true EP1493708A2 (en) | 2005-01-05 |
| EP1493708A3 EP1493708A3 (en) | 2006-08-23 |
Family
ID=33428299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP04015126A Withdrawn EP1493708A3 (en) | 2003-07-03 | 2004-06-28 | Drive for elevators and goods hoists |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1493708A3 (en) |
| IT (1) | ITBO20030413A1 (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1612179A1 (en) * | 2004-06-24 | 2006-01-04 | Alberto Sassi S.P.A | Drive for elevators and goods hoists |
| EP2322463A1 (en) | 2009-11-12 | 2011-05-18 | Inventio AG | Lift assembly |
| EP2567925A1 (en) * | 2011-09-07 | 2013-03-13 | Thyssenkrupp Elevator Manufacturing Spain S.L. | Elevator with cogged belt and pulley and with counterweight |
| EP2567924A1 (en) * | 2011-09-07 | 2013-03-13 | Thyssenkrupp Elevator Manufacturing Spain S.L. | Elevator without counterweight with a cogged belt and pulley |
| EP2574584A1 (en) * | 2011-09-30 | 2013-04-03 | Inventio AG | Frictional drive for an elevator and operating method |
| EP2703330A1 (en) * | 2012-08-31 | 2014-03-05 | Kone Corporation | Elevator |
| CN103917474A (en) * | 2011-11-13 | 2014-07-09 | 通力股份公司 | Elevator system |
| EP2789562A1 (en) * | 2013-04-10 | 2014-10-15 | Kone Corporation | A torque limiting coupling for a hoisting machine |
| US9546076B2 (en) | 2011-09-15 | 2017-01-17 | Kone Corporation | Suspension arrangement and guide shoe arrangement for an elevator |
| US9643817B2 (en) | 2011-05-18 | 2017-05-09 | Kone Corporation | Elevator arrangement |
| US9758346B2 (en) | 2011-06-22 | 2017-09-12 | Kone Corporation | Tensioning arrangement for a traction means of an elevator |
| US9957135B2 (en) | 2012-01-25 | 2018-05-01 | Kone Corporation | Elevator |
| CN108116966A (en) * | 2018-01-31 | 2018-06-05 | 三洋电梯(珠海)有限公司 | Driving spiral elevator |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE359523C (en) * | 1922-09-23 | Otto Hegemann | Protection against overdriving the conveyor basket | |
| GB864182A (en) * | 1958-06-14 | 1961-03-29 | Loire Atel Forges | Improvement in lifting installations |
| WO2003043927A2 (en) * | 2001-11-23 | 2003-05-30 | Inventio Ag | Elevator with belt-type means of transmission, especially a toothed belt, as a means of support or driving means |
-
2003
- 2003-07-03 IT ITBO20030413 patent/ITBO20030413A1/en unknown
-
2004
- 2004-06-28 EP EP04015126A patent/EP1493708A3/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE359523C (en) * | 1922-09-23 | Otto Hegemann | Protection against overdriving the conveyor basket | |
| GB864182A (en) * | 1958-06-14 | 1961-03-29 | Loire Atel Forges | Improvement in lifting installations |
| WO2003043927A2 (en) * | 2001-11-23 | 2003-05-30 | Inventio Ag | Elevator with belt-type means of transmission, especially a toothed belt, as a means of support or driving means |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1612179A1 (en) * | 2004-06-24 | 2006-01-04 | Alberto Sassi S.P.A | Drive for elevators and goods hoists |
| CN102695663B (en) * | 2009-11-12 | 2014-08-27 | 因温特奥股份公司 | Elevator system, operating method thereof,and initialize method of controller of elevator system |
| EP2322463A1 (en) | 2009-11-12 | 2011-05-18 | Inventio AG | Lift assembly |
| WO2011057890A1 (en) | 2009-11-12 | 2011-05-19 | Inventio Ag | Elevator system |
| CN102695663A (en) * | 2009-11-12 | 2012-09-26 | 因温特奥股份公司 | Elevator system |
| US9266699B2 (en) | 2009-11-12 | 2016-02-23 | Inventio Ag | Elevator system and operation thereof |
| US9643817B2 (en) | 2011-05-18 | 2017-05-09 | Kone Corporation | Elevator arrangement |
| US9758346B2 (en) | 2011-06-22 | 2017-09-12 | Kone Corporation | Tensioning arrangement for a traction means of an elevator |
| EP2567925A1 (en) * | 2011-09-07 | 2013-03-13 | Thyssenkrupp Elevator Manufacturing Spain S.L. | Elevator with cogged belt and pulley and with counterweight |
| EP2567924A1 (en) * | 2011-09-07 | 2013-03-13 | Thyssenkrupp Elevator Manufacturing Spain S.L. | Elevator without counterweight with a cogged belt and pulley |
| US9546076B2 (en) | 2011-09-15 | 2017-01-17 | Kone Corporation | Suspension arrangement and guide shoe arrangement for an elevator |
| EP2574584A1 (en) * | 2011-09-30 | 2013-04-03 | Inventio AG | Frictional drive for an elevator and operating method |
| CN103917474A (en) * | 2011-11-13 | 2014-07-09 | 通力股份公司 | Elevator system |
| EP2776355A4 (en) * | 2011-11-13 | 2015-06-24 | Kone Corp | Elevator system |
| US9957135B2 (en) | 2012-01-25 | 2018-05-01 | Kone Corporation | Elevator |
| EP2703330A1 (en) * | 2012-08-31 | 2014-03-05 | Kone Corporation | Elevator |
| EP2789562A1 (en) * | 2013-04-10 | 2014-10-15 | Kone Corporation | A torque limiting coupling for a hoisting machine |
| CN108116966A (en) * | 2018-01-31 | 2018-06-05 | 三洋电梯(珠海)有限公司 | Driving spiral elevator |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1493708A3 (en) | 2006-08-23 |
| ITBO20030413A1 (en) | 2005-01-04 |
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