Low-floor tramcar bogie

Abstract

The invention provides a low-floor tramcar bogie. The low-floor tramcar bogie comprises a framework, a swing bolster, a drafting device connected with a car body, a shaft box, a wheel set, a driving device, a foundation brake device, a magnetic track brake device, a primary suspension, a secondary suspension, a dragging device, a stone sweeper and a sand scattering device. The framework comprises side beams and end beams, a cross beam is arranged between the side beams and provided with a driving motor fixing plate and a positioning block, a positioning protrusion is arranged on the positioning block, a driving motor of the driving device is fixed to the driving motor fixing plate, positioning is conducted through the positioning protrusion and a positioning groove, and a cantilever of the driving motor is hung on a transmission shaft of the wheel set. A side bearing box is arranged in the swing bolster, and a catching groove is formed in the edge of the side bearing box. The dragging device connected with the car body comprises an installing plate, a connecting pin, a gasket and a pin shaft. A gap is formed between the pin shaft and the gasket. The magnetic track brake device conducts limiting operation through a magnetic track brake limiting device. By the adoption of the structure, the strength of the framework is improved, the transverse motion amplitude of the swing bolster relative to the framework can be reduced, and the driving device can be reliably supported and fixed.

Description

technical field [0001] The invention relates to a low-floor tram bogie. Background technique [0002] Bogies are 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 bogies. Present bogie is mainly made up of framework, axle box, wheelset, driving device, primary suspension, secondary suspension, damping system traction device. [0003] The frame of the existing bogie with bolster is mainly made up of side beams and beams, as in the patent literature that the application number is 201310653342.9 and the application date is 2013.12.05 and the publication date is 2014.03.26. The frame of the frame is an open structure, so the bearing capacity of the side beams is limited and the strength of the frame is low; in addition, the bolster is installed on the frame through the secondary suspension. When the car body is installed on the bogi...

AI Technical Summary

Problems solved by technology

[0003] The frame of the existing bogie with bolster is mainly made up of side beams and beams, as in the patent literature that the application number is 201310653342.9 and the application date is 2013.12.05 and the publication date is 2014.03.26. The frame of the frame is an open structure, so the bearing capacity of the side beams is limited and the strength of the frame is low; in addition, the bolster is installed on the frame through the secondary suspension. When the car body is installed on the bogie, the traction is connected Between the frame and the bolster, the bolster is prone to lateral movement, especially when the car body moves on a curved track, and the lateral movement will be larger

[0004] For the side bearing on the bolster, the traditional side bearing is directly installed on the side bearing seat of the bolster, such as the patent document disclosed in the application number 201210135845.2, when the vehicle body acts on the side bearing, the stability of the side bearing is not good , Later, there was an accommodating cavity provided on the bolster, and a side bearing box was set in the accommodating cavity, and the side bearing was arranged in the side bearing box, such as the bolster disclosed in the patent document whose application number is 201110408526.X structure, although this structure solves the traditional technical problems, but the side support and the side support box are difficult to disassemble, which brings inconvenience to the subsequent maintenance

[0005] Now, the bolster and the car body are connected by discs, such as the patent document disclosed in the application number 201210135845.2, and because the car body floats up and down, the car body is easy to hit the bolster

[0006] For the driving mechanism of the existing bogie, it basically installs one side of the driving mechanism on the frame. In this way, once the connection between the driving mechanism and the frame fails, the driving mechanism will easily fall off the frame and fall into the track, which may cause serious accidents. safe question

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