转向架的工作原理 课件

1、How Bogies Work?TANG YangMonday, July 11, 20222021/4/171 精品PPT Whats a bogie?Definition from : 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

2、special frame or side frame, attached to a vehicle.2021/4/172 精品PPT Names转向架 (Zhuan Xiang Jia) or 走行部 (Zou Xing Bu) in ChinaBogie in the UK Truck in the USA, Canada and Mexico台车 (, from trolley)，in Japan2021/4/173 精品PPT Roles of bogieSupport carbody firmlyRun stably on both straight and curved track

3、Ensure good ride comfortMinimize generation of track irregularities and rail abrasion.2021/4/174 精品PPT Development in axle numberTwo axles, one railcarThree axles, one railcarTwo two-axle bogie, one railcar (most common for passenger, freight cars, metro, LRT and high speed locomotives)Two three-axl

4、e 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 railcar2021/4/175 精品PPT Development in axle load10t at the beginning of railway.The Maximum value is 25t in China, especially for Frei

5、ght car, 3237t in America.For passenger trains, the limit of axle load is always less than 17t.2021/4/176 精品PPT Two axles, one railcar2021/4/177 精品PPT Two axles, one railcar (carriage)2021/4/178 精品PPT Two axles, one railcar (gondola)2021/4/179 精品PPT 2021/4/1710 精品PPT 9、 人的价值，在招收诱惑的一瞬间被决定。2022/7/1120

6、22/7/11Monday, July 11, 202210、低头要有勇气，抬头要有低气。2022/7/112022/7/112022/7/117/11/2022 10:53:19 PM11、人总是珍惜为得到。2022/7/112022/7/112022/7/11Jul-2211-Jul-2212、人乱于心，不宽余请。2022/7/112022/7/112022/7/11Monday, July 11, 202213、生气是拿别人做错的事来惩罚自己。2022/7/112022/7/112022/7/112022/7/117/11/202214、抱最大的希望，作最大的努力。11 七月 20222

7、022/7/112022/7/112022/7/1115、一个人炫耀什么，说明他内心缺少什么。七月 222022/7/112022/7/112022/7/117/11/202216、业余生活要有意义，不要越轨。2022/7/112022/7/1111 July 202217、一个人即使已登上顶峰，也仍要自强不息。2022/7/112022/7/112022/7/112022/7/11For more detailsSee also: /wiki/Ffestiniog_Railway 2021/4/1712 精品PPT Three axles, one railcar2021/4/1713 精品

8、PPT Three axles, one railcar (carriage)2021/4/1714 精品PPT Two two-axle bogies, one railcar (gondola)2021/4/1715 精品PPT Two two-axle bogies, one railcar (carriage)2021/4/1716 精品PPT Three two-axle bogies, one railcar (locomotive)2021/4/1717 精品PPT Two two-axle bogies, one railcar (High speed locomotive)2

9、021/4/1718 精品PPT One two-axle bogie, two railcars (TGV)2021/4/1719 精品PPT 2021/4/1720 精品PPT 2021/4/1721 精品PPT 2021/4/1722 精品PPT 2021/4/1723 精品PPT Two four-axle bogies, one railcar (flat car)2021/4/1724 精品PPT Four four-axle bogies, one railcar (depressed center flat car)2021/4/1725 精品PPT Etat Railway

10、4 axled bogie railcar ZZy24091 is one of the famous Bugatti vehicles. This is one of the Presidential type. May 30 2003 2021/4/1726 精品PPT Two five-axle bogies, one railcar (flat car)2021/4/1727 精品PPT Four eight-axle bogies, one railcar (schnabel car)2021/4/1728 精品PPT Development in bogie suspensionN

11、o suspensionOne suspension (freight cars)Two suspensions (most common in modern passenger cars and locomotives)Three suspensions (rare, only for special purposes)2021/4/1729 精品PPT One-suspension bogie2021/4/1730 精品PPT One-suspension bogie2021/4/1731 精品PPT Two-suspension bogie2021/4/1732 精品PPT Three-

12、suspension bogie2021/4/1733 精品PPT How a two-suspension bogie supports the vehicle body?2021/4/1734 精品PPT 2021/4/1735 精品PPT 2021/4/1736 精品PPT One suspension bogie(cast steel bogie)2021/4/1737 精品PPT Equaliser Bar Suspension2021/4/1738 精品PPT Rubber Suspension 2021/4/1739 精品PPT Air Suspension 2021/4/174

13、0 精品PPT 2021/4/1741 精品PPT How a bogie runs on the track?The shape and location of wheels and rails on straight track 2021/4/1742 精品PPT The shape and location of wheels and rails on curved track 2021/4/1743 精品PPT Negotiating curve of Railcar with two bogies2021/4/1744 精品PPT 2021/4/1745 精品PPT A modern

14、 UK power bogie2021/4/1746 精品PPT Bogie FrameCan 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.Bogie TransomTransverse structural member of bogie frame (usually two off) which al

15、so supports the carbody guidance parts and the traction motors.Brake CylinderAn 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 requireme

16、nts. 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 li

17、nks 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.2021/4/1747 精品PPT Primary Suspension CoilA steel coil spring, two of which are fitted to each axlebox in this design. They carry the weight of the bogie fr

18、ame and anything attached to it.Motor Suspension TubeMany 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 no

19、se.GearboxThis contains the pinion and gearwheel which connects the drive from the armature to the axle.Lifting LugAllows the bogie to be lifted by a crane without the need to tie chains or ropes around the frame.2021/4/1748 精品PPT MotorNormally, each axle has its own motor. It drives the axle throug

20、h the gearbox. Some designs, particularly on tramcars, use a motor to drive two axlesNeutral Section Switch DetectorIn 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 c

21、rossed. 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.2021/4/1749 精品PPT Secondary Suspension Air BagRubber air suspension bags are p

22、rovided as the secondary suspension system for most modern trains. The air is supplied from the trains compressed air system.Wheel Slide Protection System Lead to AxleboxWhere a Wheel Slide Protection (WSP) system is fitted, axleboxes are fitted with speed sensors. These are connected by means of a

23、cable attached to the WSP box cover on the axle end.Loose Leads for Connection to CarbodyThe motor circuits are connected to the traction equipment in the car or locomotive by flexible leads shown here.Shock AbsorberTo reduce the effects of vibration occurring as a result of the wheel/rail interface

24、.Axlebox CoverSimple protection for the return current brush, if fitted, and the axle bearing lubrication.2021/4/1750 精品PPT Your PresentationEach group consists of 3 students, the first one for general introduction to your bogie, second for the major structures and functions, and the third one for its features,10 minutes.Self-steering Radial Bogie 自导向径向转向架Force-steering Radial Bogie 迫导向径向转向架(Bogie of Chong Qing Monorail重庆单轨转向架CR