Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B61—RAILWAYS
  • B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
  • B61F3/00—Types of bogies
  • B61F3/16—Types of bogies with a separate axle for each wheel
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B61—RAILWAYS
  • B61C—LOCOMOTIVES; MOTOR RAILCARS
  • B61C9/00—Locomotives or motor railcars characterised by the type of transmission system used; Transmission systems specially adapted for locomotives or motor railcars
  • B61C9/38—Transmission systems in or for locomotives or motor railcars with electric motor propulsion
  • B61C9/52—Transmission systems in or for locomotives or motor railcars with electric motor propulsion with transmission shafts at an angle to the driving axles
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B61—RAILWAYS
  • B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
  • B61F3/00—Types of bogies
  • B61F3/02—Types of bogies with more than one axle
  • B61F3/04—Types of bogies with more than one axle with driven axles or wheels

Definitions

• the invention relates to a driven idler axle for
• Rail vehicles in particular for undercarriages or bogies on low-floor vehicles according to the preamble of claim 1.
• the idler gear axle essentially consists of a cranked, non-rotating axle (portal axle) with double-sided axle heads with axle journals, on each of which a generally rubber-sprung idler gear is supported.
• the chassis frame of the chassis is supported by a primary suspension
• the idler gear axle for the normal track on the axle head on the inside of the wheel has two machined bearing surfaces for the primary suspension.
• the idler gear axles of the aforementioned versions are equipped with a disc brake, but have no possibility of drive.
• the drive for transmitting the torque of the idler gears of the idler gear axles takes place in such a way that a cardanic double clutch is arranged between the primary suspension electromechanical drive arranged on the outside of the vehicle and the respective idler gear, which engages on the outside of the wheel.
• the design of the idler axles with a cardanic double clutch acting on the outside of the wheel and internal connections for the primary suspension usually enables e.g. in the case of standard-gauge vehicles (gauge approx. 1435 mm), the arrangement of a low-floor central aisle between the heads of the idler gear axle with sufficient width.
• Width of the central aisle of the low-floor car is further undesirably restricted.
• the invention is therefore based on the object of proposing a driven idler wheel axle in which this problem does not exist, and moreover an excessively wide width of the idler wheel axle and drive is avoided, in order to also, for example, narrow-gauge vehicles at the same time narrow body width without disruptive overhang of the running gear.
• the proposal according to the invention consists essentially in that the arrangement of the bearing surfaces for the primary suspension and the output plane of the cardanic double clutch is interchanged with the wheel, so that the bearing surfaces are arranged on the outside of the wheel and the output plane of the coupling on the inside of the wheel.
• the output level of the cardanic double clutch is led through a central opening in the wheel and the wheel support frame.
• the installation width for the output level of the cardanic double clutch is now significantly smaller than that for the axle head of the wheel support frame (contact surfaces for the primary suspension), the vehicle floor can be widened in this way or made possible in the first place for narrow-track vehicles.
• the wheel is mounted on the inside of the wheel support frame on a hollow axle stub as short as possible as a wheel support and this wheel support is connected to the wheel support frame either directly or by means of a flange connection. This ensures a stable construction with a small overall width. The overall width is also reduced if the wheel disc is part of the output level of the cardanic double clutch.
• a ground contact of a known design can be provided for each wheel.
• the peculiarity is that the rotating component of the contact is integrated directly into the cardan shaft, while the non-rotating component via a torque arm, e.g. at the same time serves as an electrical lead, is connected to the wheel support frame.
• a torque arm e.g. at the same time serves as an electrical lead
• the wheel support frame In order to conduct current to the wheel tire, there are current bridges between the wheel tire and the coupling star formed on the drive shaft on the driven side. Since the gimbal drum is isolated from the wheel disc by the rubber packs of the output level of the gimbal double clutch, and the wheel disc is also isolated from the wheel tire by the rubber ring of the rubber-sprung wheel, the use of complex, current-insulated wheel bearings can be dispensed with. Due to the design described, current passage through the rolling bearings is reliably avoided.
• FIG. 1 is a top view of the driven idler gear axle
• Figure 3 shows schematically in plan view the application of the idler wheel axle according to the invention in a double-axle chassis for a low-floor car.
• the U-shaped wheel support frame 1 (portal axis) of the idler wheel axle comprises the wheels 2 on the outside.
• the bearing surfaces 14 for the primary suspension are formed on the two legs of the wheel support frame.
• the output plane 3 of the cardanic double clutch is arranged on the inside of each individual wheel 2. As can be seen from FIG. 2, part of the output clutch 3 is arranged directly on the wheel disk 7. Drive level 4 and output level 3 of the cardanic double clutch are connected to one another via a cardan shaft 5. This cardan shaft 5 is guided through an opening of the wheel 2 and the wheel support frame 1. The drive side 4 is connected via a gear 11 to the motor (not shown) arranged on each side between the wheels 2.
• the drive and output levels 3, 4 of the cardanic double clutch consist of hollow shaft stars and wedge packets arranged in between.
• the output gear of the transmission 11 is designed as a hollow shaft.
• the drive torque is transmitted to the drive plane 4 of the hollow shaft wedge packet coupling via the hollow shaft star connected to the hollow shaft.
• a cardan shaft 5 guided through the gearbox hollow shaft guides the torque into the output plane 3, which in turn consists of the same key packs as are used in the drive plane 4 and the wheel star connected to the wheel disc 7.
• the wheel 2 is mounted on the inside of the wheel support frame 1 via a wheel bearing 16 on a hollow axle stub 6 directly or by means of a flange connection.
• the rotating part of an earth contact 8 is integrated in the cardan shaft 5.
• the fixed part is connected to the wheel support frame via a torque arm 12, which can also serve as a feed line at the same time.
• the current supply from the ground contact to the wheel tire 10 takes place via current bridges 13 which are attached to the coupling star of the propeller shaft 5.
• the rubber ring 9 of the rubber-sprung wheel and the rubber elements of the output level 3 of the cardanic double clutch provide effective current insulation between the wheel disc and
• Wheel support frame instead, so that the installation of current-insulated roller bearings between the wheel disc 7 and the hollow stub axle 6 can be dispensed with.
• FIG. 3 shows an example of the use of two idler gear axles according to the invention in a driven double-axle chassis.
• a drive unit on the longitudinal side of the chassis, which consists of a motor 15 and the bevel gear transmissions 11 which are flanged on both sides.
• the drive unit is suspended from a chassis frame, not shown, which in turn is supported via the primary spring support surfaces 14 on the wheel support frame 1 of the two idler wheel axles.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Transportation (AREA)
• Arrangement Of Transmissions (AREA)
• Vehicle Body Suspensions (AREA)
• Vibration Prevention Devices (AREA)
• Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
• Handcart (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=7813997

Family Applications (1)

Country Status (7)

Families Citing this family (20)

Family Cites Families (13)

• 1996
  • 1996-12-07 DE DE19650913A patent/DE19650913A1/de not_active Withdrawn
• 1997
  • 1997-10-30 PT PT97950050T patent/PT883540E/pt unknown
  • 1997-10-30 AT AT97950050T patent/ATE199078T1/de active
  • 1997-10-30 DE DE59702987T patent/DE59702987D1/de not_active Expired - Lifetime
  • 1997-10-30 ES ES97950050T patent/ES2154913T3/es not_active Expired - Lifetime
  • 1997-10-30 WO PCT/EP1997/006001 patent/WO1998024674A1/fr not_active Ceased
  • 1997-10-30 EP EP97950050A patent/EP0883540B1/fr not_active Expired - Lifetime
  • 1997-12-03 US US08/984,264 patent/US5904102A/en not_active Expired - Lifetime

Non-Patent Citations (1)

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