Elastic side bearing for bogie and bogie

A bogie and elastic technology, applied in the field of railway vehicle bogie structure, can solve problems such as large unsprung weight, design structure restrictions, and restrictions on railway cargo transportation, so as to reduce stiffness, increase vertical deflection, and improve axle load and the effect of low dynamic performance

Inactive Publication Date: 2011-02-02
CRRC QIQIHAR ROLLING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The lower cross braced bogie with an axle load of 21t above adopts a cross bracing device, and the vehicle can meet the needs of 120Km / h high-speed operation, but the axle load is relatively low, which is limited to a certain extent under the conditions of the existing train marshalling yard and line bridge. and affect the transportation efficiency; in addition, because the axle box rubber pad is not used between the bogie side frame and the bearing saddle, the unsprung weight is relatively large
The cross-braced bogie with 25t axle load is a new type of speed-increasing heavy-duty truck bogie in my country, but compared with foreign heavy-duty transport countries, the axle load is relatively low. Although the axle box rubber pad is used between the side frame and the bearing saddle, due to the design structure Restricted, the vertical deflection is low, about 0.3-0.8mm, which is not suitable for the realization of low dynamic effect of bogies with larger axle loads
The running speed and density of railway freight cars in my country are the first in the world, but compared with the 32.43t or even higher axle load in foreign heavy-duty transport countries, the axle load is relatively low, which affects and restricts railway freight transport

Method used

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  • Elastic side bearing for bogie and bogie
  • Elastic side bearing for bogie and bogie
  • Elastic side bearing for bogie and bogie

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] image 3 It is a schematic diagram of a semi-sectional structure of a bogie provided in Embodiment 1 of the present invention, Figure 4 for image 3 Schematic diagram of the side half-section structure of the middle bogie, Figure 5 for image 3 Schematic diagram of the top view structure of the middle bogie. Such as image 3 , 4 As shown in and 5, the bogie of this embodiment mainly includes a wheel set composition, a side frame composition, a bolster composition, a foundation braking device 50 and a vibration damping device 40, each structure will be described in detail below.

[0056] The wheelset consists of two axles 11 and their wheels 12 . Such as Figure 5 As shown, the side frame composition includes two side frames 21 respectively arranged on both sides of the wheel 12 . Two ends of each side frame 21 are respectively overlapped on the wheel shaft 11 , so that the wheel shaft 11 bears the side frame 21 and the load on the side frame 21 . At the joint...

Embodiment 2

[0061] Figure 6 The partial structural schematic diagram of the bogie provided by Embodiment 2 of the present invention specifically shows the structure at the rubber pad of the axle box. The bogie of this embodiment can further optimize and improve the axle box rubber pad based on the above bogie structure. Such as Figure 6 As shown, the axle box rubber pad is sandwiched between the side frame 21 and the bearing saddle 60, and the axle box rubber pad specifically includes a longitudinal support portion 71 and a lateral positioning portion 72; the lateral positioning portion 72 is along the longitudinal support portion 71 The longitudinal direction is set on the side of the longitudinal support part 71, and there is an included angle between the longitudinal support part 71 and the transverse positioning part 72, the included angle is greater than zero, as long as there is a certain bending relative to the longitudinal support part 71, it can To the lateral positioning eff...

Embodiment 3

[0068] Figure 7 The structure schematic diagram of the axle box rubber pad in the bogie provided by the third embodiment of the present invention, this embodiment can be based on the second embodiment, and the structural realization of the axle box rubber pad with the above shape is preferably: the axle box rubber pad Both the longitudinal support portion 71 and the lateral positioning portion 72 include an upper liner 75 and a lower liner 76 , and a rubber layer 77 is arranged between the upper liner 75 and the lower liner 76 . That is, the axle box rubber pad 70 is formed by interposing a rubber layer 77 between liners.

[0069] In this embodiment, specifically, a boss 73 may be provided on the upper liner 75 and the lower liner 76 , so as to rigidly engage with the bearing saddle 60 and the groove 74 of the side frame 21 . The upper liner 75 is in contact with the side frame 21 and bears the weight from the parts above the side frame 21. The lower liner 76 is closely atta...

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PUM

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Abstract

The invention discloses an elastic side bearing for a bogie and the bogie. The bogie comprises a wheel set assembly, a side frame assembly, a swing bolster assembly, a basic braking device and a vibration damper, wherein the swing bolster assembly is provided with the elastic side bearing; and the elastic side bearing at least comprises a side bearing body, the side bearing body comprises a rubber body, and a spring is arranged in the rubber body. The rigidity of a bearing body can be effectively reduced and the vertical deflection can be increased by improving the structure of the elastic bearing so as to improve the axle load and the low power performance of the bogie.

Description

technical field [0001] The invention relates to a railway vehicle bogie structure technology, in particular to an elastic side bearing for a bogie and a bogie. Background technique [0002] The bogie is an important component of a railway vehicle. The axle load and operating speed are important performance parameters of the bogie. The axle load represents the carrying capacity of the bogie to the vehicle, and the operating speed represents the vehicle running speed that the bogie can support. [0003] At present, more than 90% of railway freight cars in my country are equipped with cross-braced bogies. The so-called cross-braced bogies refer to bogies with cross-bracing devices. The lower cross bracing bogie with an axle load of 21t and a commercial operating speed of 120Km / h is used for railway wagons with a loading capacity of 60t on general lines, and is the main type of bogie for speed-up trucks in my country; the lower cross bracing bogie with an axle load of 25t and a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B61F5/08B61F5/14
Inventor 周国东李立东邵文东徐世锋刘振明
Owner CRRC QIQIHAR ROLLING CO LTD
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