转向架的工作原理

One-suspension bogie
One-suspension bogie
Two-suspension bogie
Three-suspension bogie
How a two-suspension bogie supports the vehicle body?
One suspension bogie (cast steel bogie)
Etat Railway 4 axled bogie railcar ZZy24091 is one of the famous Bugatti vehicles. This is one of the 'Presidential' type. May 30 2003
Two five-axle bogies, one railcar (flat car)
• Gearbox
– This contains the pinion and gearwheel which connects the drive from the armature to the axle.
• Lifting Lug
– Allows the bogie to be lifted by a crane without the need to tie chains or ropes around the frame.
Equaliser Bar Suspension
Rubber Suspension
Air Suspension
How a bogie runs on the track?
The shape and location of wheels and rails on straight track
Two axles, one railcar
Two axles, one railcar (carriage)
Two axles, one railcar (gondola)
For more details See also: http://en.wikipedia.org/wiki/Ffestiniog_Railway
Three axles, one railcar
Three axles, one railcar (carriage)
Two two-axle bogies, one railcar (gondola)
Two two-axle bogies, one railcar (carriage)
Three two-axle bogies, one railcar (locomotive)
The shape and location of wheels and rails on curved track
Negotiating curve of Railcar with two bogies
A modern UK power bogie
• Bogie Frame
– Can be of steel plate or cast steel. In this case, it is a modern design of welded steel box format where the structure is formed into hollow sections of the required shape.
Development in axle number
• Two axles, one railcar • Three axles, one railcar • Two two-axle bogie, one railcar (most common for passenger, freight cars, metro, LRT and high speed locomotives) • Two three-axle bogie, one railcar (most common for freight locomotives) • Articulated bogie, two railcars (TGV EMU) • More than three axles in one bogie, or more than two bogies in one railcar
• Neutral Section Switch Detector
– In the UK, the overhead line is divided into sections with short neutral sections separating them. It is necessary to switch off the current on the train while the neutral section is crossed. A magnetic device mounted on the track marks the start and finish of the neutral section. The device is detected by a box mounted on the leading bogie of the train to inform the equipment when to switch off and on.
Two two-axle bogies, one railcar (High speed locomotive)
One two-axle bogie, two railcars (TGV)
Two four-axle bogies, one railcar (flat car)
Four four-axle bogies, one railcar (depressed center flat car)
Four eight-axle bogies, one railcar (schnabel car)
Development in bogie suspension
• No suspension • One suspension (freight cars) • Two suspensions (most common in modern passenger cars and locomotives) • Three suspensions (rare, only for special purposes)
Roles Hale Waihona Puke Baiduf bogie
• Support carbody firmly • Run stably on both straight and curved track • Ensure good ride comfort • Minimize generation of track irregularities and rail abrasion.
Names
• 转向架 (Zhuan Xiang Jia) or 走行部 (Zou Xing Bu) in China • Bogie in the UK • Truck in the USA, Canada and Mexico • 台车 (トロリー, from trolley)，in Japan
• Bogie Transom
– Transverse structural member of bogie frame (usually two off) which also supports the carbody guidance parts and the traction motors.
• Motor
– Normally, each axle has its own motor. It drives the axle through the gearbox. Some designs, particularly on tramcars, use a motor to drive two axles
How Bogies Work?
TANG Yang Sunday, June 12, 2011
What’s a bogie?
• Definition from http://en.wikipedia.org : a chassis or framework carrying wheels, attached to a vehicle. • Definition from Textbook Che Liang Gong Cheng (Vehicle engineering): a wheeled wagon or trolley comprising two or more wheelsets connected by special frame or side frame, attached to a vehicle.
• Brake Cylinder
– An air brake cylinder is provided for each wheel. A cylinder can operate tread or disc brakes. Some designs incorporate parking brakes as well. Some bogies have two brake cylinders per wheel for heavy duty braking requirements. Each wheel is provided with a brake disc on each side and a brake pad actuated by the brake cylinder. A pair of pads is hung from the bogie frame and activated by links attached to the piston in the brake cylinder. When air is admitted into the brake cylinder, the internal piston moves these links and causes the brake pads to press against the discs. A brake hanger support bracket carries the brake hangers, from which the pads are hung.
• Motor Suspension Tube
– Many motors are suspended between the transverse member of the bogie frame called the transom and the axle. This motor is called "nose suspended" because it is hung between the suspension tube and a single mounting on the bogie transom called the nose.
Development in axle load
• <10t at the beginning of railway. • The Maximum value is 25t in China, especially for Freight car, 32~37t in America. • For passenger trains, the limit of axle load is always less than 17t.
• Primary Suspension Coil
– A steel coil spring, two of which are fitted to each axlebox in this design. They carry the weight of the bogie frame and anything attached to it.