WO1998021495A1 - Driving mechanism for a stationary transporting device - Google Patents
Driving mechanism for a stationary transporting device Download PDFInfo
- Publication number
- WO1998021495A1 WO1998021495A1 PCT/EP1997/006208 EP9706208W WO9821495A1 WO 1998021495 A1 WO1998021495 A1 WO 1998021495A1 EP 9706208 W EP9706208 W EP 9706208W WO 9821495 A1 WO9821495 A1 WO 9821495A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- drive
- housing
- drive shaft
- shaft
- planetary gear
- Prior art date
Links
Classifications
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
- F16D3/20—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
- F16D3/18—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts the coupling parts (1) having slidably-interengaging teeth
-
- 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
- B66B11/0453—Driving gear ; Details thereof, e.g. seals actuated by rotating motor; Details, e.g. ventilation with planetary or epicycloidal gear, e.g. differential gear
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
- F16D3/18—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts the coupling parts (1) having slidably-interengaging teeth
- F16D3/185—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts the coupling parts (1) having slidably-interengaging teeth radial teeth connecting concentric inner and outer coupling parts
Definitions
- the invention relates to a drive for a stationary conveyor with the features according to the preamble of claim 1.
- Stationary conveyor systems for people and goods are widely used, e.g. B. as elevators, escalators, walkways, etc. They run at relatively low speeds; z. B. in passenger or goods lifts in most cases below 4 m / s. The speed on an output shaft of the drive is correspondingly low. These cannot be provided directly by electric motors with a low degree of efficiency, but require a downstream reduction gear. Furthermore, brakes are provided in order to brake the conveyor device and to stop it if necessary and in an emergency.
- a drive of the type described above is known from DE-AI 38 40 281 for hoists.
- An electric motor and a planetary gear are flanged to a middle brake housing on opposite sides.
- the planetary gear is a two-stage stationary gear, in which the second stage planet carrier is flanged to the brake housing and serves as a hub carrier.
- the hub is non-rotatably connected to ring gears of the planetary gear and carries a traction sheave in the form of a rope pulley for elevators or, in the case of escalators and moving walks, in the form of a chain ring.
- a drive shaft of the electric motor drives a sun gear shaft of a sun gear of a first planetary stage of the planetary gear via a positive coupling.
- the outer part of the clutch, on which the sun gear shaft can be integrally formed with the sun gear, is axially fixed in the brake housing by means of a deep groove ball bearing and sealed by a shaft seal.
- the outer part of the clutch protrudes into the brake housing and carries a brake disc of an electrically operated brake.
- Drives for conveyor systems installed in buildings are required to work with high efficiency, take up little installation space, be easy to maintain and are not susceptible to faults and do not generate undue heat and noise.
- the invention has for its object, taking into account the above requirements, especially to reduce the axial length of the drive.
- the drive shaft in the motor is axially and radially supported by a ball bearing at the ends of the drive shaft.
- the drive shaft must be mounted precisely so that the play between the armature and the rotor of the motor can be kept small in order to achieve good efficiency and low noise.
- a coupling in particular an elastic coupling, is generally arranged between the two.
- this coupling is replaced by a coupling with a spherical driving profile, which is shorter in the axial direction and, due to the spherical driving profile, is able to compensate for an angular offset.
- the outer part of the coupling is expediently mounted in the drive housing by means of a ball bearing and the center of gravity given by the crowning of the driving profiles is placed approximately in the middle of the ball bearing.
- the sun gear shaft with the sun gear can float within the given tolerances and angle limits between the planets of the planetary gear. This results in a good load distribution with low running noise.
- the brake is arranged on the extended drive shaft on the side of the electric motor opposite the planetary gear. It does not affect the bearing of the sun gear shaft and the sun gear. On the other hand, shifting the sun gear does not affect the running of the brake disc.
- the axial length can be further shortened if the coupling parts are integrally connected to the sun gear shaft or the drive shaft. If the outer part of the clutch is connected to the sun gear shaft and thus mounted in the drive housing, the sun gear shaft with the sun gear can freely adjust between the planet gears within the bearing play. If the outer coupling part is connected to the drive shaft of the electric motor, the drive shaft is supported very precisely, in particular if the bearing clearance of the ball bearing is chosen to be small. The sun gear can then set itself within the swivel angle given by the crowning, as well as the play between the driving profiles between the planet gears. In the first and especially in the second case, the gearbox-side motor bearing can be omitted, since the drive shaft is supported by the ball bearing in the drive housing.
- the remaining motor bearing as a fixed bearing and to center the drive shaft at its opposite end in a pre-centering.
- the pre-centering protects the motor during transport and facilitates its assembly. It surrounds the drive shaft with such play that the drive shaft can rotate freely in the pre-centering after the entire drive has been assembled.
- Fig. 3 shows a variant of the embodiment of Fig. 2 and
- Fig. 4 shows an escalator drive with an electric motor, which has a foot housing.
- FIG. 1 denotes an electric motor, in the motor housing 2 of which a drive shaft 3 is mounted radially and axially via a first motor bearing 16 and a second motor bearing 17.
- the motor housing 2 is flanged to a drive housing 4 which has a housing foot 5. Screw holes 6 in the base 5 serve to fasten the drive housing 4 on a foundation or a mounting plate, not shown.
- a planetary gear 8 is flanged to the electric housing 1 on the drive housing 4. Screws 20 are used to fasten the electric motor 1 and the planetary gear 8.
- the planetary gear 8 has at the input a sun gear 10 with a sun gear shaft 9, which is connected to the drive shaft 3 via a clutch 7.
- the coupling 7 has an outer part 12 with an inner driving profile 13, which is formed in one piece with the sun gear shaft 9, and an inner part 11 with an outer driving profile 14, which is connected in one piece with the drive shaft 3
- the driving profiles 13 and 14 can be executed individually or together crowned in the axial direction. This creates a non-rotatable joint connection in a small space. If only one of the entrainment profiles 13 or 14 is made to be ball-shaped, the entrainment profiles 13, 14 can shift axially into one another and bring about a length compensation between these parts. The length compensation may be necessary due to temperature influences and manufacturing tolerances.
- the outer entrainment profile 14 of the inner part 11 of the coupling 7 is spherical.
- the outer part 12 of the clutch 7 is supported radially by a ball bearing 15 in the drive housing 4. It can be axially supported on the drive shaft 3 in one direction, while it is supported axially on the ball bearing 15 in the other direction. If the ball bearing 15 is designed as a fixed bearing (FIG. 3), the axial support on the drive shaft 3 can be omitted.
- the sun gear shaft 9 can pivot with the sun gear 10 within the bearing play of the ball bearing 15 and thus adjust to the planet gears of the planetary gear 8, not shown, in a floating manner.
- the drive shaft 3 is not influenced by the pivoting movement of the sun gear shaft 9, since at least one of the driving profiles 13, 14 can pivot relative to the sun gear shaft 9 because of the crowning. Nevertheless, the bearing of the drive shaft 3 is precise enough so that the second motor bearing 17 can be omitted. This gives you additional axial space.
- the first motor bearing 16 is designed as a fixed bearing by being axially fixed both in the motor housing 2 and on the drive shaft 3 (FIG. 4).
- a pre-centering 18 in the form of a disk is provided, which surrounds the drive shaft 3 with such play, that the drive shaft 3 can rotate freely in the pre-centering 18 after assembly of the entire drive 4. Since the pre-centering 18 drives the drive shaft 3 during holds the assembly aligned, the assembly of the electric motor 1 on the drive housing 4 itself is facilitated.
- the smooth running and efficiency of the electric motor 1 essentially depend on the small play that can be maintained between a rotor, not shown, on the drive shaft 3 and an armature in the motor housing 2. It is therefore particularly important that the drive shaft 3 is mounted precisely. For this reason, it is expedient that the outer part 12 of the coupling 7 is connected in one piece to the drive shaft 3 and is therefore precisely supported in the drive housing 4 via the ball bearing 15 with little bearing play.
- the drive housing 4 is centered with respect to the motor housing 2 via a centering collar 22 or is formed in one piece with the latter (FIGS. 3 and 4). In this case, the motor housing 2 becomes a so-called foot housing that carries the planetary gear.
- the planetary gear 8 is a so-called stationary gear, in which a member of the gear, for. B. a planet carrier or a ring gear, is fixed and is firmly connected to the drive housing 4.
- the link In order to reduce the overall length, it is expedient to design the link as a cover for the drive housing 4 or for the motor housing 2.
- this part serves as a hub carrier of a rotating housing part on which a flange 23 for fastening a drive wheel, for. B. in the form of a rope pulley or a sprocket.
- drives for elevators have a complex control system, by means of which the travel speed and the positioning of the elevators to the floors are exactly maintained. Therefore, flywheels can largely be dispensed with.
- a brake 24 is expediently mounted on an extended, free end of the drive shaft 3. In the case of escalators, simpler electric motors 1 are generally used and the brake is designed so that the escalator cannot run unacceptably when it is fully loaded and descending when it is stopped.
- a flywheel 25 is used to prevent it from decelerating too much due to the low weight and the low inertia, so that it is uncomfortable, even dangerous, for the user, also on the drive shaft 3, which is extended to the outside
- a flywheel 26 be arranged in the interior of the motor housing 2. This flywheel mass 26 serves for a basic setting of the escalator drive, while the additional, smaller flywheel 25 on the outer part of the drive shaft 3 serves to adapt the drive to the respective escalator type and size or to the respective application.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Retarders (AREA)
- Braking Arrangements (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP97950146A EP0937209A1 (en) | 1996-11-14 | 1997-11-08 | Driving mechanism for a stationary transporting device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19647063.3 | 1996-11-14 | ||
DE19647063A DE19647063A1 (en) | 1996-11-14 | 1996-11-14 | Drive for a stationary conveyor |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998021495A1 true WO1998021495A1 (en) | 1998-05-22 |
Family
ID=7811652
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1997/006208 WO1998021495A1 (en) | 1996-11-14 | 1997-11-08 | Driving mechanism for a stationary transporting device |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0937209A1 (en) |
KR (1) | KR20000053275A (en) |
CN (1) | CN1236421A (en) |
DE (1) | DE19647063A1 (en) |
WO (1) | WO1998021495A1 (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19746394A1 (en) * | 1997-10-21 | 1999-04-22 | Wittur Aufzugteile Gmbh & Co | Drive for lifting device, especially elevator |
DE19956789A1 (en) * | 1999-11-25 | 2001-05-31 | Zahnradfabrik Friedrichshafen | Planetary gear for mounting on electric motor, has sealing element between sun wheel shaft, and housing arranged axially outside output shaft accommodation region in reduced diameter section |
DE10117749A1 (en) | 2001-04-09 | 2002-11-21 | Siemens Ag | Vehicle drive with curved tooth coupling |
DE10160685C2 (en) | 2001-12-11 | 2003-10-02 | Sew Eurodrive Gmbh & Co | Planetary gear, geared motor and series of geared motors |
US20060185124A1 (en) | 2005-02-18 | 2006-08-24 | Kozlowski Keith A | Joint assembly with centering flange |
CN102826333A (en) * | 2012-09-19 | 2012-12-19 | 昆山特力伯传动科技有限公司 | Conveying system |
DE102020128735A1 (en) * | 2020-11-02 | 2022-05-05 | Ebm-Papst St. Georgen Gmbh & Co. Kg | Drive unit consisting of a motor, a gearbox and a clutch connecting them |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4453830A (en) * | 1980-03-27 | 1984-06-12 | Cooper Industries, Inc. | Output coupling for concrete mixer transmission |
EP0133325A1 (en) * | 1983-08-08 | 1985-02-20 | F. Tacke KG | Rotary universal joint |
US4824418A (en) * | 1985-08-24 | 1989-04-25 | Hubert Taubert | Articulated joint between two shafts |
DE3840281A1 (en) | 1988-11-30 | 1990-05-31 | Zahnradfabrik Friedrichshafen | Lifting-gear drive |
DE9416306U1 (en) * | 1994-10-10 | 1995-01-19 | Wittur Aufzugteile Gmbh & Co | Drive unit for a hoist |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH146422A (en) * | 1929-12-09 | 1931-04-15 | Aktiengesellscha Zahnradfabrik | Motor vehicle transmission and shaft leading to it from the engine. |
FR1410767A (en) * | 1964-10-07 | 1965-09-10 | Demag Ag | Oscillating coupling device |
GB2045386B (en) * | 1978-11-13 | 1983-02-23 | Yanmar Diesel Engine Co | Planetary power transmission system |
DE3112090A1 (en) * | 1981-03-27 | 1983-02-03 | Heinz 2000 Hamburg Buchmeier | Lift gearing with an electric motor |
US4704096A (en) * | 1982-02-19 | 1987-11-03 | Eaton Corporation | Crowned splines and defination of root radius therefor |
DE8513219U1 (en) * | 1985-05-04 | 1986-05-22 | Heidelberger Druckmaschinen Ag, 6900 Heidelberg | Electric motor with a mechanical gearbox coupled to it |
-
1996
- 1996-11-14 DE DE19647063A patent/DE19647063A1/en not_active Withdrawn
-
1997
- 1997-11-08 CN CN97199554A patent/CN1236421A/en active Pending
- 1997-11-08 KR KR1019990704254A patent/KR20000053275A/en not_active Application Discontinuation
- 1997-11-08 EP EP97950146A patent/EP0937209A1/en not_active Withdrawn
- 1997-11-08 WO PCT/EP1997/006208 patent/WO1998021495A1/en not_active Application Discontinuation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4453830A (en) * | 1980-03-27 | 1984-06-12 | Cooper Industries, Inc. | Output coupling for concrete mixer transmission |
EP0133325A1 (en) * | 1983-08-08 | 1985-02-20 | F. Tacke KG | Rotary universal joint |
US4824418A (en) * | 1985-08-24 | 1989-04-25 | Hubert Taubert | Articulated joint between two shafts |
DE3840281A1 (en) | 1988-11-30 | 1990-05-31 | Zahnradfabrik Friedrichshafen | Lifting-gear drive |
DE9416306U1 (en) * | 1994-10-10 | 1995-01-19 | Wittur Aufzugteile Gmbh & Co | Drive unit for a hoist |
Also Published As
Publication number | Publication date |
---|---|
DE19647063A1 (en) | 1998-05-20 |
CN1236421A (en) | 1999-11-24 |
KR20000053275A (en) | 2000-08-25 |
EP0937209A1 (en) | 1999-08-25 |
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