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A low-floor tram bogie

A technology for trams and bogies, applied in the direction of bogies, devices for lateral relative movement between the underframe and the bogies, railway car body parts, etc., can solve the problem of heavy unsprung weight, poor mechanical performance, and driving The problems such as the huge weight of the motor and gear box can be avoided, so as to achieve the effect of stable installation, improved mechanical performance and reduced weight.

Active Publication Date: 2017-06-30
GUANGZHOU ELECTRICAL LOCOMOTIVE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The drive system is installed on the frame of the bogie. Since the motor and gearbox of the drive system are large and heavy, they will have a great impact on the mechanical properties of the bogie after they are installed on the frame.
The existing bogie has poor mechanical properties due to its heavy unsprung weight

Method used

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  • A low-floor tram bogie
  • A low-floor tram bogie
  • A low-floor tram bogie

Examples

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Embodiment Construction

[0036] The present invention will be further described below with reference to the accompanying drawings.

[0037] like figure 1 , 2 As shown, a low-floor tram bogie includes a frame 1, a bolster 4, a traction device 5 connected to the vehicle body 50, an axle box 8, a wheelset 3, a drive system 2, a braking system 7, and a primary suspension 91 , Second series suspension 92, stone sweeper and sand spreading device 6.

[0038] like Figure 4 , 5 As shown, the frame 1 is in the shape of a "Sun", which includes two symmetrically arranged side beams 11 , a cross beam 16 and an end beam 12 located between the two side beams 11 . The side beam 11 is in the shape of an airfoil, and includes a U-shaped frame 111 in the middle position and end frames 112 connected to both ends of the U-shaped frame 111. The connection between the end frame 112 and the U-shaped frame 111 is arc-shaped to enhance the connection. The strength of the upper part can reduce stress concentration; the to...

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Abstract

A bogie of a low-floor tramcar comprises a framework, a swing bolster, a traction device connected with a car body, axle boxes, wheel sets, drive systems, brake systems, primary suspensions, secondary suspensions and stone sweeping and sand scattering devices, wherein each drive system comprises a motor, a gear case and a hollow axle sleeve, a gear set is arranged in the gear case, an output shaft of the motor is connected with an input shaft of the gear case through a coupler, a wheel axle is sleeved with the axle sleeve, a gap is formed between the axle sleeve and the wheel axle, one end of the axle sleeve is connected with one coupling, the other end of the axle sleeve extends into the gear case and is connected with an output gear of the gear case, the coupling adopts a hollow structure, and a fixing sleeve is arranged on the inner wall of the coupling and is in clearance fit with the wheel axle. The gear cases are driven by the output shafts of the motors and drive the hollow axle sleeves, and the hollow axle sleeves are nested on the wheel axles of the wheel sets and transfer power to the wheel axles. By means of the drive system, the motors can drive the wheel sets, the unsprung weight of the bogie can be reduced under the action of the axle sleeves, and accordingly, the mechanical property of the bogie is improved.

Description

technical field [0001] The invention relates to a low-floor tram, in particular to a power bogie of the low-floor tram. Background technique [0002] The bogie is an important part of locomotives, trams and subways. The steering performance, running performance and shock absorption performance of locomotives, trams and subways are mainly determined by the bogie. The current bogie is mainly composed of frame, axle box, wheelset, drive system, braking system, primary suspension, secondary suspension, shock absorption system and traction device. [0003] The drive system of the bogie includes a motor, a gear box and a wheelset, and the motor drives the wheelset through the gear box. The drive system is installed on the frame of the bogie. Since the motor and gearbox of the drive system are large and heavy, they will have a great impact on the mechanical properties of the bogie after they are installed on the frame. The existing bogie has poor mechanical properties due to its ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B61F5/52B61F5/30B61F5/04B61C9/38
CPCB61C9/38B61F5/04B61F5/305B61F5/52
Inventor 李涛蒋宽李芾安琪陈信才涂立波黄赫
Owner GUANGZHOU ELECTRICAL LOCOMOTIVE
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