CN110171763A - Belt drive unit and its traction belts or lifting belt - Google Patents
Belt drive unit and its traction belts or lifting belt Download PDFInfo
- Publication number
- CN110171763A CN110171763A CN201810204628.1A CN201810204628A CN110171763A CN 110171763 A CN110171763 A CN 110171763A CN 201810204628 A CN201810204628 A CN 201810204628A CN 110171763 A CN110171763 A CN 110171763A
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- Prior art keywords
- belt
- traction
- cross
- hoisting
- drive
- 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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- 239000013536 elastomeric material Substances 0.000 claims abstract description 4
- 230000000295 complement effect Effects 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 abstract description 9
- 238000005452 bending Methods 0.000 description 6
- 229920001971 elastomer Polymers 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 238000004804 winding Methods 0.000 description 5
- 239000000806 elastomer Substances 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000007373 indentation Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000002301 combined effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B7/00—Other common features of elevators
- B66B7/06—Arrangements of ropes or cables
- B66B7/062—Belts
-
- 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
- B66B11/08—Driving gear ; Details thereof, e.g. seals with hoisting rope or cable operated by frictional engagement with a winding drum or sheave
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B7/00—Other common features of elevators
- B66B7/06—Arrangements of ropes or cables
- B66B7/08—Arrangements of ropes or cables for connection to the cars or cages, e.g. couplings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G5/00—V-belts, i.e. belts of tapered cross-section
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G5/00—V-belts, i.e. belts of tapered cross-section
- F16G5/20—V-belts, i.e. belts of tapered cross-section with a contact surface of special shape, e.g. toothed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B15/00—Main component parts of mining-hoist winding devices
- B66B15/02—Rope or cable carriers
- B66B15/04—Friction sheaves; "Koepe" pulleys
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
- Pinball Game Machines (AREA)
Abstract
Traction belts transmission device or lifting belt drive unit with the traction belts or lifting belt being made of elastomeric material, traction belts or lifting belt are embedded with the tensional element or cord extended along the longitudinal direction of traction belts or lifting belt, wherein traction belts or lifting belt have the cross-sectional profiles of expansion, in cross-section, the profile of traction belts or lifting belt is two-sidedly, it not only in drive surface/pulling face but also overleaf have wedge shape and is separated by guide groove or groove, the protrusion extended along the longitudinal direction of belt, the protrusion and guide groove or groove of protrusion wedge shape corresponding on drive disk or steering wheel are complementally formed, traction belts or the protrusion of lifting double sided of belt are made to extend or invade in the guide groove or groove of belt pulley side, vice versa, the wherein cross section of tensional element or cord Area at least partially fills the cross-sectional area of wedge-shaped projection.
Description
Technical Field
The invention relates to a traction belt drive or lifting belt drive with a traction belt or lifting belt made of an elastomer material, which is wound in an endless manner around a pulley of a belt pulley or belt drive, in particular an elevator drive with a lifting belt, wherein tension members or cords extending in the longitudinal direction of the traction belt or lifting belt are embedded in the elastomer material of the traction belt or lifting belt and are arranged parallel to one another, and the traction belt or lifting belt has a cross-sectional profile which is uniform over its length and which, by means of the interaction of this cross-sectional profile and a profile complementary to the cross-sectional profile on the circumference of the pulley or pulley, is guided, deflected or driven on the pulley or pulley, wherein the profile of the traction belt or lifting belt, in cross-section, is bilaterally oriented, I.e. projections extending in the longitudinal direction of the belt, which are wedge-shaped not only on the drive/traction side but also on the rear side and are separated from one another by guide grooves or recesses, are complementary to corresponding wedge-shaped projections and guide grooves or recesses on the drive or steering wheel and are formed in such a way that the projections on both sides of the traction or hoisting belt extend or penetrate into the guide grooves or recesses on the belt pulley side and vice versa.
Background
For years more and more belt-shaped spreaders have been used in elevator technology. Here, first of all, a flat belt is involved which has to be guided by a spherical disk, on which the flat belt can be placed centrally. Sufficient space must be provided for this purpose, which ultimately leads to a large structural width of the drive disks and the steering wheel. Furthermore, in a spherical disc application, the tension members or cords in the center of the belt carry a greater load than the outer cords. This can cause a reduction in service life.
Another type of spreader is a wedge or poly-wedge, that is to say with protrusions extending in the longitudinal direction of the belt, which protrusions are introduced into grooves on a traction or drive disc. In theory, a plurality of spreaders or lifting belts can be placed there compactly against one another. However, if the spreader, which usually has a smooth back, is guided by smooth, stripless deflecting rollers, the deflecting rollers must still be embodied spherical in order to be placed centrally, which involves the disadvantages described above.
Alternatively, the wedge belt can be twisted, that is to say rotated once about its longitudinal axis, on the way to the steering wheel, i.e. before reaching the steering wheel, so that guidance in the groove can also be achieved on the steering wheel. However, additional installation space, in particular in the longitudinal direction of the belt, is still required by this "twisting". In addition, the cords in the edge regions are subjected to a greater load in the rotation/twisting than the cords in the middle, so that here again a reduction in the service life cannot be avoided.
On the other hand, a construction of the traction belt, the lifting belt or the carrying belt with a striation is considered advantageous for different reasons, for example for improving the force transmission between the disc and the belt, better guidance by the traction means, or influencing the shear forces between the tension members and the rubber substrate.
Finally, the wedge belt can also be provided with a double-sided design, i.e. not only on the drive/traction side but also on the rear side, so that a relatively compact design for the overall transmission with a deflection is possible.
In the technical field, the term "belt surface" is understood to mean a plane surface, i.e. a surface of the belt which rests on the drive wheels or the deflecting wheels. In general, the belt face placed on or looped around the drive wheel is referred to as the drive face, while the opposite belt face, which is typically looped around the diverting wheel, is referred to as the belt back or belt back. As a synonym for the concept "drive face", the concept "traction face" is also used. Likewise, the term "deflecting surface" is also used instead of the term "back surface".
In the case of double-sided striped belts, the solutions known from the prior art have the disadvantage that, up to now, the back profile has to be additionally and separately applied or preheated on the previously smooth belt back. Thereby, the thickness of the spreader/lifting belt must be increased. However, the increased thickness adversely affects the bending sensitivity of the hoisting belt, so that the minimum bending diameter, i.e. the wheel diameter, must be increased. This in turn has a negative effect on the required installation space. Manufacturing costs are also increased due to the additional material usage.
For this purpose, document EP 1886960 a1 discloses an elevator installation with a lifting appliance which is formed from a plurality of wedge-shaped profiles which are placed next to one another and are each provided with an internal tension element. The wedge-shaped profiles are connected to one another by the carrier tape on the rear side of the spreader and are spaced apart from one another such that guide grooves extending to the carrier tape are formed between adjacent profiles. Thereby, a certain relative movement of the wedge profiles with respect to each other is allowed.
Document DE 3411772 a1 discloses a drive belt in which a projection or indentation is formed on the drive surface of the drive belt, which projection or indentation extends into an opposite contour which is formed on the outer circumference of a pulley belonging to a belt turning device or an elevator system. In this case, a respective thread formed in the longitudinal direction is arranged in the region of the projections. Thereby, the plane pressure between the transmission belt and the belt pulley becomes uniform.
In document US 6739433, a traction means for an elevator installation is disclosed, which is preferably constructed as a double-sided, striped flat belt with embedded tension members, so that the area providing friction between the traction sheave and the belt is larger. The traction force should therefore be increased, the shear forces should be better transmitted and the guiding properties on the correspondingly configured drive and steering wheels should be improved. The elastomer material of this striped flat belt, however, is still subjected to relatively large shear forces, because the force transmission area between the traction sheave and the traction means, i.e. the contact plane or tangent plane, is still clearly spaced from the center point of the embedded tension member.
Disclosure of Invention
The object of the invention is to provide a traction belt drive or lifting belt drive with a traction belt or lifting belt made of an elastomer material, wherein the traction belt drive or lifting belt drive is designed in such a way that a double-sided, that is to say better guiding properties are provided not only on the traction surface but also on the non-driven guide surface or deflection surface for the traction belt or lifting belt without the need for additional material or reduced bending properties for the separately formed back contour. High tractive forces/driving forces or torques should likewise be transmitted.
This object is achieved by the traction belt drive or the lifting belt drive according to the invention. The tension members or cords extend substantially in the cross-sectional plane of the traction belt or the hoisting belt. At the same time, the cross-sectional area of the tension member or cord at least partially fills the cross-sectional area of the wedge-shaped protrusion. In this case, the tension members or cords are arranged inside the projections such that, independently of the bending direction or the direction of wrap, that is to say whether the traction belt or the lifting belt wraps around the pulley or pulley with the driving side/traction side or with the rear side, starting from an imaginary cylindrical surface which outwardly delimits the profile cavity, which is developed by the tips of the projections of the pulley-side wedge/wedge, or from a line which connects the tips of the projections of the wedge/wedge on the pulley side in the cross section of the pulley profile, the tension members or cords penetrate into the profile cavity (hollow) to a depth of at least 10%, preferably at least 25%, of their nominal diameter, the profile cavity being formed by the profile of the respective complementary pulley-side guide groove.
The term "profile cavity" or "cavity formed by the profile of the belt-disk-side guide groove" is used here to refer to the term tire manufacturing, wherein the tire profile is identified by the tread blocks or by the profile cavities located substantially between the tread blocks. Such contour cavities or "cavities" are open to the outside and are therefore infinite, i.e. are only delimited on one side by the contour, i.e. by the material surface in the contour block, contour groove or guide groove. The envelope curve or envelope plane which is developed or mathematically formed on the outside by the uppermost tip of the contour therefore effectively borders the imaginary or calculable cavity.
This term and definition are known to the person skilled in the art of tire manufacture, but are not common in the specialist field of traction belt drives or lifting belt drives to date on account of the lack of requirements. In this regard, the feature "an imaginary cylindrical surface developing outwardly through the tips of the belt-disc-side protrusions defining the cavity" serves as a clear and non-misleading description of the inventive concept and its feasibility.
That is to say, the traction belt or the lifting belt is situated in the guide groove of the belt pulley in such a way that the tension members in the traction belt or the lifting belt penetrate at least partially into the guide groove or the recess of the belt pulley. The guide groove or recess of the pulley accommodates a portion of the cross section of the tension member, viewed in cross section. Very good guidance and lateral stability are thereby achieved, shear forces are minimized and the transmissible traction forces are very high.
In this case, the geometric relationship can be completely established in that, viewed in cross section, a penetration depth of more than 50% of the cord diameter is achieved in the guide groove of the pulley, i.e. the cord penetrates approximately to its midpoint/half into the indentations or grooves which are configured complementarily to the wedge-shaped projections on the respective belt side.
In an advantageous development, the wedge-shaped projections on the belt side of the traction or lifting belt are formed flat or polygonal in their top region.
The traction belt drive/lifting belt drive can thereby also be equipped with different drive or guide wheels. For example, the drive wheel can be formed with a corresponding profile and complementary to the wedge-shaped projections and recesses on the traction or lifting belt, while the deflecting or back wheel can also be constructed as a simple, smooth and spherical wheel which, by virtue of its spherical nature, centers the flat belt, for example in the region of the tops of the wedge-shaped projections.
A further advantageous embodiment consists in that the wedge-shaped projections of the traction or lifting belt are arranged at least unilaterally, that is to say asymmetrically on one belt side with respect to a vertical axis of the belt cross section. For example, the cross-sectional area of the wedge-shaped protrusions can be filled at least partially by a different number of tension members or cords, respectively, which extend in the cross-sectional plane of the traction belt or the hoisting belt, which are placed next to one another. That is, for example, two cords with cross-sectional areas placed adjacent to each other can be arranged inside the cross-sectional area of one wedge-shaped protrusion, while only one cord is provided in the cross-sectional area of the adjacent wedge-shaped protrusion.
A further advantageous embodiment consists in that the wedge-shaped projections on both sides of the traction or lifting belt are arranged asymmetrically to one another with respect to the transverse axis of the belt cross section. For example, it is possible to form only two wedge-shaped projections on the rear side and three wedge-shaped projections on the opposite drive side. In this case, the tension members or cords can be constructed, for example, in such a way that they lie adjacent to one another in the cross-sectional plane of the traction or hoisting belt that three cords are assigned to the cross-sectional areas of the two projections on the rear side, which cords at least partially fill the cross-sectional areas of the projections, and two cords of the previous type are assigned to the cross-sectional areas of the three projections on the drive side.
Such an example can also be considered as an advantageous further design solution, i.e. with a different number of tension members or cords extending in the protrusions on both sides of the traction or hoisting belt.
A traction belt or hoisting belt which is particularly suitable for use in a traction belt drive or hoisting belt drive according to the invention is formed such that, in cross section, wedge-shaped projections are provided not only on the drive side/traction side but also on the rear side and are separated from one another by guide grooves or grooves, wherein tension members or cords extend in the belt longitudinal direction in the respective wedge-shaped projections, wherein the tension members or cords are arranged with parts of their cross section, preferably with substantially identical parts of their cross section, in the projection cross section or wedge cross section of each of the traction side and rear side, respectively. This results in a traction or lifting belt which is uniformly stressed and is of planar design, and which has the same permissible bending radius on both belt sides, irrespective of the bending direction. Standardization of wheel diameters allows for standardized construction dimensions and standardizes the storage of spare parts.
A further advantageous embodiment of such a traction or hoisting belt consists in arranging a greater part of the cord cross section, viewed in cross section, in the corresponding protrusion cross section of the traction side. The traction belt or lifting belt thereby has a particularly high tensile force or transmissible traction force.
It is of course also possible to implement a special design whereby, in a further advantageous embodiment of the traction or lifting belt, at least the outer regions of the protrusions of the traction or lifting belt on both belt sides are constructed from different materials. In this way, a material with a very high coefficient of friction can be provided on the traction side.
A further advantageous embodiment of such a traction or lifting belt consists in coating the raised outer regions of the traction or lifting belt on at least one belt side, preferably on both belt sides with different materials. Such a coating, for example a textile coating, is just as effective in reducing the coefficient of friction and thus the heat generation in a traction or hoisting belt in which the wedge-shaped protrusions of the traction or hoisting belt are formed flat on their top side and the traction or hoisting belt is guided by spherical deflecting rollers.
In summary, the traction belt drive and the associated traction or hoisting belt according to the invention allow a very compact design of the elevator, for example, which can be used only in a small installation space, while providing good and double-sided guiding properties with good lateral stability, allowing a minimization of the material usage, allowing the use of winding technology, i.e. winding of the traction or hoisting belt on a layer of belt already on the winding drum, and overall an optimal, uniform loading of all cords over the total belt width and thus a further optimized service life of the entire system.
Drawings
The present invention will be explained in detail with reference to examples. Wherein,
figure 1 shows a cross-sectional view of a traction belt or a hoisting belt for use in a traction belt drive or a hoisting belt drive according to the invention,
figure 2 shows a cross-sectional view of another embodiment of a hoisting belt for use in a hoisting belt transmission according to the invention,
figure 3 shows another embodiment of such a lifting belt drive,
figure 4 shows another embodiment of such a lifting belt drive,
figure 5 shows a further embodiment of such a lifting belt drive,
fig. 6 shows schematically the upper half of a striped drive pulley in an elevator system with a hoisting belt transmission according to the invention, the drive pulley having a hoisting belt drawn in cross-section, lying or encircling,
fig. 7 shows an example of application of the hoisting belt transmission according to the invention as an elevator drive.
Detailed Description
Fig. 1 shows, firstly in a schematic representation, a section through a traction belt or lifting belt 1 for use in a traction belt drive or lifting belt drive according to the invention, wherein in section, both on the drive side/traction side and on the rear side, projections 3, 3a are provided which are wedge-shaped and are separated from one another by guide grooves or recesses 2, wherein tension members or cords 4 extend in the longitudinal direction of the belt in the respective wedge-shaped projections, wherein each tension member or cord 4 is placed with a section 5 of the section thereof, here with a substantially identical section of the section 5 thereof, in a projection cross section 6 of one traction side and of one rear side, respectively. The traction or lifting belt is constructed of an elastomeric material. The cord is formed by a strand of twisted wires, which in turn is formed by twisted metal filaments, wherein the twist direction and the twist length are each designed differently and in such a way that any remaining helix is compensated. This is usually achieved by a combination of S-and Z-twists. However, the internal structure of the cord with strands and filaments is not drawn here, as it is not essential to the invention. The cords are simply drawn as circular shaped tension members.
However, it is already clear from fig. 1 that there are different shapes in the top region of the wedge-shaped protrusions. The projection 3 has an approximately circular cross section, while the projection 3A is flat, so that the traction or lifting belt 1 drawn here can be guided on both sides on a flat, spherical steering wheel.
It has also been seen in fig. 1 that the tension members or cords 4 extend substantially in a cross-sectional plane 6 of the traction or hoisting belt and that the cross-sectional area of the tension members or cords at least partially fills the cross-sectional area of the wedge-shaped protrusions.
Fig. 2 simply depicts a sectional view of a further lifting belt 7 for use in a lifting belt drive according to the invention, wherein the two wedge-shaped projections 3, 3a are arranged asymmetrically to one another about a transverse axis of the belt cross section, which transverse axis here lies in the cross-sectional plane 6. In this case, three wedge-shaped projections 3a, which are separated from one another by guide grooves or recesses 2 and in which two tension members or cords 4 each extend in the longitudinal direction of the belt, are formed on the upper belt back. Each protrusion forms a flat top area.
The lower belt surface is a traction surface. The traction surface has four wedge-shaped projections 3 and 3a separated from each other by a guide groove or recess 2, wherein the projections 3 are placed on the belt edge in a left-right symmetrical manner. Between which two wedge-shaped protrusions 3a are placed, in each of which protrusions 3a there are two cords 4 extending in parallel in the longitudinal direction of the belt. Here, too, each projection 3a forms a flat top region on the traction surface. The wedge-shaped protrusions 3, 3a are placed symmetrically with respect to a vertical axis 8 of the belt cross-section.
It follows that two grooves 2 are provided on the belt back as "guide grooves" for the deflecting rollers, while three grooves 2 are formed on the traction surface as guide grooves. Hereby a narrower construction of the hoisting belt is achieved with almost constant guiding properties and with good traction on the driving surface.
In contrast, in the lifting belt 9 used in the lifting belt drive according to the invention, which is drawn diagrammatically in section in fig. 3, the wedge-shaped projections 3, 3a are disposed asymmetrically both with respect to a transverse axis of the belt cross section lying in the cross-sectional plane 6 and with respect to a vertical axis 8 of the belt cross section. Likewise, in the wedge-shaped projection 3a or in relation to the wedge-shaped projection 3a there are respectively two cords 4 extending in the longitudinal direction of the belt, while in the wedge-shaped projection 3 or in relation to the wedge-shaped projection 3 there is only one cord 4 extending in the longitudinal direction of the belt.
In the design of the hoisting belt according to fig. 1, 2 and 3, it is clear that each tension member or cord 4 is placed with a part of its cross-section 5, preferably with a substantially identical part of its cross-section 5, in the protrusion cross-section/wedge cross-section of one traction-side and one rear-side wedge-shaped protrusion 3, 3a, respectively.
Fig. 4 shows a sectional view of a further lifting belt 10 for use in a lifting belt drive according to the invention, which is formed substantially similarly to lifting belt 1 in fig. 1, wherein all wedge-shaped protrusions 3a are provided with a flat on both sides, i.e. on the drive side or traction side and on the rear side, however. Such a lifting belt 10 can thus be run, centered and/or driven on both sides on complementary, striped wheels and also on spherical wheels, that is to say can be used most extensively in elevator systems, for example.
The design of the lifting belt 11 depicted in fig. 5 is similar to the lifting belt depicted in fig. 2. The lifting belt 11, however, has only flat wedge-shaped projections 3a on both sides, in which a plurality of tension members or cords 4 extend in the longitudinal direction of the belt. The two wedge-shaped projections 3a are arranged asymmetrically to one another about a transverse axis of the belt cross section, which axis here lies in the cross-sectional plane 6, while the wedge-shaped projections 3a are arranged symmetrically about a vertical axis 8 of the belt cross section.
In this case, two wedge-shaped projections 3a separated from one another by grooves 2 are formed on the upper belt back, in each of which three tension members or cords 4 extend in the belt longitudinal direction, so that each projection forms a flat top region which is relatively wide and extends almost over half the belt width. This rear side is thereby ideally suited for a deflecting roller designed as a flat, spherical wheel in a belt drive.
The lower belt surface, i.e. the traction surface, has three wedge-shaped projections 3a which are separated from one another by recesses 2 and are arranged symmetrically with respect to a vertical axis 8 and are distributed uniformly over the width of the belt. In the wedge-shaped projections of the traction surface there are two cords 4 extending in the longitudinal direction of the belt. By means of this shaping on the traction surface and by means of the complementary, striped drive wheels, high torques can be transmitted on the lifting belt or very high traction forces can be applied to the lifting belt.
Fig. 6 schematically shows the upper half of such a ribbed drive pulley 12 of an elevator system with a flat or encircling hoisting belt 10, which is also shown in fig. 4, likewise in a sectional view. Reference is made here to fig. 4 for a structural and geometric design of lifting belt 10. Here, the lifting belt is illustrated with a drive/traction surface encircling a complementary, striped drive wheel.
Under the combined effect of the geometric design of the lifting belt and the winding of the complementary ribbed drive pulley in the lifting belt transmission constructed according to the invention, it is known from the winding of the drive surfaces shown in fig. 6 that the tension members or cords are arranged inside the wedge-shaped protrusions in such a way that the tension members or cords 4 penetrate into the profile cavity (hollow) formed by the profile of the groove 14 on the respective complementary pulley side by 35% of their nominal diameter 13 when the traction belt or lifting belt 10 is wound around the drive pulley 12. Here, the nominal diameter 13 is the same for all cords.
The contour cavity is formed as described above between the contour base, i.e. the surface of the drive wheel 12 that is ribbed or provided with grooves 14, and an imaginary cylindrical surface that delimits the contour cavity outward and is developed by the tips of the projections on the belt disk side, which cylindrical surface can be drawn or represented in the illustrated cross section as a boundary line 15.
Fig. 7 finally shows a simple example of use of the hoisting belt drive according to the invention as an elevator drive. The elevator system 16 is here provided with a hoisting belt 10 on which the booth 17 and the counterweight 18 are suspended by means of a diverting pulley 19. The lifting belt 10 is wound endlessly around a diverting pulley 19 and a driving pulley 20 and is guided, diverted and driven by these pulleys. In this case, the lifting belt 10 is wound with its rear side around the deflection pulley 19 and with its drive side around the drive pulley 20.
Finally, it is noted that it is of course also possible to use other, narrower lifting belts in the traction belt or lifting belt drive, and in particular also wider lifting belts, for example by forming the cords in pairs in the projections, for example. In this way, the most different conditions and numbers of grooves or channels can be achieved not only on the rear/deflecting side but also on the traction side. A good example of this is to form the lifting belt in one piece, which is in principle twice as large as the lifting belt according to fig. 2, that is to say wherein two such belts are connected to one another in cross section and form a double-width lifting belt.
Description of the reference numerals
(part of the description)
1 lifting belt
2 guide or recess
3 protrusion
3a protrusion
4 tension members or cords
5 cross section of tension member or cord
6 transverse plane/plane of tension members or cords of a traction or hoisting belt
7 hoisting belt
8 vertical axis of hoisting belt
9 hoisting belt
10 hoisting belt
11 hoisting belt
12 driving wheel
Nominal diameter of 13 cord or tension member
14 complementary pulley-side guide grooves
15 boundary line of contour cavity
16 elevator system
17 booth
18 balance body
19 steering wheel
20 driving wheel
Claims (14)
1. Traction or hoisting belt drive with a traction or hoisting belt (1, 7, 9, 10, 11) of an elastomeric material, which is wound endlessly around a pulley or sheave (12, 19, 20) of the traction or hoisting belt drive, wherein a tension member or cord (4) is embedded in the elastomeric material of the traction or hoisting belt (1, 7, 9, 10, 11) and extends parallel in the longitudinal direction of the traction or hoisting belt, and which has a cross-sectional profile, on which the traction or hoisting belt is guided by the co-action of the cross-sectional profile and a profile (14) complementary to the cross-sectional profile on the circumference of the pulley or sheave (12, 19, 20) of the traction or hoisting belt, Steering or driving, wherein in cross-section the traction or hoisting belt (1, 7, 9, 10, 11) has a profile with protrusions (3, 3a) extending in the longitudinal direction of the belt which are wedge-shaped and separated from each other by guide grooves or grooves (2) on both sides, i.e. not only on the drive/traction side but also on the back, which protrusions are formed complementary to corresponding wedge-shaped protrusions and guide grooves or grooves (14) on the drive or steering wheels (12, 19, 20), so that the protrusions (3, 3a) of the traction or hoisting belt on both sides extend into the belt-disc-side guide grooves or into the guide grooves and vice versa, characterized in that the tension member or cord (4) extends substantially in the cross-sectional plane of the traction or hoisting belt (1, 7, 9, 10, 11), and the cross-sectional area (5) of the tension member or cord (4) at least partially fills the wedge-shaped protrusions 3, 3a), wherein the tension member or cord (4) is arranged inside the protrusion (3, 3a) in such a way that whether the traction or hoisting belt (1, 7, 9, 10, 11) encircles the belt pulley or pulley (12, 19, 20) with the driving/traction side or with the back side, the tension member or cord (4) penetrates into the profile cavity formed by the profile of the corresponding complementary belt pulley-side guide groove to a depth of at least 10% of the nominal diameter (13) of the tension member or cord (4) starting from an imaginary spreading out through the tips of the pulley-side protrusions outwardly defining the profile cavity.
2. Traction belt drive or hoisting belt drive according to claim 1, wherein the traction belt or hoisting belt (1, 7, 9, 10, 11) is an elevator drive with a lifting belt.
3. Traction or hoisting belt drive according to claim 1, wherein the tension member or cord (4), whether the traction or hoisting belt (1, 7, 9, 10, 11) encircles the pulley disc or pulley (12, 19, 20) with the drive face/traction face or with the back face, starts with an imaginary cylindrical surface expanding through the tips of the pulley side projections outwardly defining a profile cavity into which at least 25% of the depth of the nominal diameter (13) of the tension member or cord (4) is intruding, the profile cavity being formed by the profile of the corresponding complementary pulley disc side guide groove.
4. Traction belt drive or hoisting belt drive according to claim 1, wherein the belt-side wedge-shaped protrusions (3a) of the traction or hoisting belt (1, 7, 9, 10, 11) are formed flat or polygonal in their top region.
5. Traction belt drive or hoisting belt drive according to claim 1, wherein the wedge-shaped protrusions (3, 3a) of the traction or hoisting belts (1, 7, 9, 10, 11) are arranged at least one-sided asymmetrically with respect to a vertical axis (8) of the belt cross-section.
6. Traction belt drive or hoisting belt drive according to claim 1, wherein the wedge-shaped protrusions (3, 3a) of both sides of the traction belt or hoisting belt (1, 7, 9, 10, 11) are arranged asymmetrically to each other with respect to a transverse axis of the belt cross-section.
7. Traction or hoisting belt drive according to claim 1, wherein a different number of tension members or cords (4) extend in the protrusions of both sides of the traction or hoisting belt (1, 7, 9, 10, 11).
8. Traction or hoisting belt (1, 7, 9, 10, 11) for use in a traction or hoisting belt drive according to claim 1, wherein in cross-section, at the drive/traction side as well as at the rear side, projections (3, 3a) are provided which are wedge-shaped and are separated from each other by a guide groove or groove (2), wherein a tension member or cord (4) extends in the belt longitudinal direction in the respective wedge-shaped projection, wherein the tension member or cord (4) is arranged with part of its cross-section (5) in the projection cross-sections/wedge-shaped cross-sections (3, 3a) of the traction and rear sides, respectively.
9. Traction or hoisting belt according to claim 8, wherein the tension members or cords (4) are arranged with substantially the same portion as their cross section in the protruding cross section/wedge-shaped cross section (3, 3a) of the traction side and the back side, respectively.
10. Traction or hoisting belt according to claim 8, wherein, viewed in cross section, a larger part of the cord cross section (5) is arranged in the protruding cross section (3, 3a) of the respective traction surface.
11. Traction or hoisting belt according to claim 8, wherein at least the outer areas of the protrusions (3, 3a) of the traction or hoisting belt (1, 7, 9, 10, 11) are constructed of different materials on both belt faces.
12. Traction or hoisting belt according to any one of claims 8 to 11, wherein the outer area of the protrusions (3, 3a) of the traction or hoisting belt (1, 7, 9, 10, 11) is coated on at least one belt face.
13. Traction or hoisting belt according to claim 12, wherein the two belt faces are coated with different materials.
14. Elevator system with a traction belt or hoisting belt according to any of claims 8 to 13.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018202454.5A DE102018202454A1 (en) | 2018-02-19 | 2018-02-19 | Belt drive and pull or carrying strap for it |
| DE102018202454.5 | 2018-02-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110171763A true CN110171763A (en) | 2019-08-27 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810204628.1A Pending CN110171763A (en) | 2018-02-19 | 2018-03-13 | Belt drive unit and its traction belts or lifting belt |
| CN201820339834.9U Active CN208883256U (en) | 2018-02-19 | 2018-03-13 | Traction or lifting belt drive unit and traction or lifting belt and elevator device |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820339834.9U Active CN208883256U (en) | 2018-02-19 | 2018-03-13 | Traction or lifting belt drive unit and traction or lifting belt and elevator device |
Country Status (3)
| Country | Link |
|---|---|
| CN (2) | CN110171763A (en) |
| DE (1) | DE102018202454A1 (en) |
| WO (1) | WO2019158271A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102018202454A1 (en) * | 2018-02-19 | 2019-08-22 | Contitech Antriebssysteme Gmbh | Belt drive and pull or carrying strap for it |
Citations (5)
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|---|---|---|---|---|
| DE3411772A1 (en) * | 1984-03-30 | 1985-05-15 | Daimler-Benz Ag, 7000 Stuttgart | Drive belt |
| CN101122097A (en) * | 2006-08-11 | 2008-02-13 | 因温特奥股份公司 | Belt for a lift facility, method for manufacturing such a belt and lift facility with a such belt |
| EP1886960A1 (en) * | 2006-08-11 | 2008-02-13 | Inventio Ag | Lift system with load-bearing mechanism, load-bearing mechanism for such a lift system and method for assembly of such a load-bearing mechanism |
| CN104053538A (en) * | 2011-12-14 | 2014-09-17 | 盖茨公司 | System and method of making open-ended thermoplastic belting |
| CN208883256U (en) * | 2018-02-19 | 2019-05-21 | 康蒂泰克驱动系统有限公司 | Traction or lifting belt drive unit and traction or lifting belt and elevator device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6401871B2 (en) | 1998-02-26 | 2002-06-11 | Otis Elevator Company | Tension member for an elevator |
| CN101549820A (en) * | 2008-04-01 | 2009-10-07 | 上海三菱电梯有限公司 | Elevator device driven by friction |
| DE102008037541A1 (en) * | 2008-04-10 | 2009-10-15 | Contitech Antriebssysteme Gmbh | traction means |
| DE102009003796A1 (en) * | 2009-04-17 | 2010-10-21 | Contitech Antriebssysteme Gmbh | Traction mechanism for use in traction mechanism drive for lift facility, has connector layer including through hole at which free space is passed through entire cross-sectional height of traction mechanism |
-
2018
- 2018-02-19 DE DE102018202454.5A patent/DE102018202454A1/en active Pending
- 2018-03-13 CN CN201810204628.1A patent/CN110171763A/en active Pending
- 2018-03-13 CN CN201820339834.9U patent/CN208883256U/en active Active
-
2019
- 2019-01-07 WO PCT/EP2019/050195 patent/WO2019158271A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3411772A1 (en) * | 1984-03-30 | 1985-05-15 | Daimler-Benz Ag, 7000 Stuttgart | Drive belt |
| CN101122097A (en) * | 2006-08-11 | 2008-02-13 | 因温特奥股份公司 | Belt for a lift facility, method for manufacturing such a belt and lift facility with a such belt |
| EP1886960A1 (en) * | 2006-08-11 | 2008-02-13 | Inventio Ag | Lift system with load-bearing mechanism, load-bearing mechanism for such a lift system and method for assembly of such a load-bearing mechanism |
| CN104053538A (en) * | 2011-12-14 | 2014-09-17 | 盖茨公司 | System and method of making open-ended thermoplastic belting |
| CN208883256U (en) * | 2018-02-19 | 2019-05-21 | 康蒂泰克驱动系统有限公司 | Traction or lifting belt drive unit and traction or lifting belt and elevator device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019158271A1 (en) | 2019-08-22 |
| DE102018202454A1 (en) | 2019-08-22 |
| CN208883256U (en) | 2019-05-21 |
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Application publication date: 20190827 |