Home » News » FAQ » What are the possible reasons for the fracture of the wheel axle of the dump skip car? How to improve?

What are the possible reasons for the fracture of the wheel axle of the dump skip car? How to improve?

Views: 0     Author: Site Editor     Publish Time: 2022-09-27      Origin: Site

facebook sharing button
twitter sharing button
line sharing button
wechat sharing button
linkedin sharing button
pinterest sharing button
whatsapp sharing button
sharethis sharing button

The fracture position of the axle is at the welding position of the two limit plates of the axle. In the actual use process, the limit plate plays a very important role. It can not only prevent the shaft and axle frame from being damaged due to the rotation of the wheel axle, but also prevent the axial movement of the rear dump inclined shaft skip car body. Through the field observation of the broken shaft, the reasons for the fracture of the wheel set shaft are summarized as follows:

1. Fatigue damage.

The dead weight and cargo weight of the rear dump skip car act on the wheel set, and the wheel set will have a vibration impact every time it passes through a rail interface. The wheel set operates at a high speed for a long time, and under the impact stress, it is easy to generate fatigue at the welding position of the limit plate of the wheel axle, thus causing the fracture of the axle.

2. Stress concentration

Welding stress concentration occurs at the welding position between the limit plate and the axle wheel.

In view of the above reasons for axle breakage. The following improvement methods can be adopted:

1. Wheel axle outer surface sleeve welding steel semicircle

A steel semicircle with the same diameter as the shaft is welded on the outer surface of the axle in the middle of the limit plate, with a thickness of 4-6 mm. The steel semicircle is staggered with the shaft, so that the welding stress is evenly distributed in the direction of the shaft diameter. The two limit plates are welded on both ends of the steel semicircle, and two triangular steel plates are added inside the limit plate to fix it, even if the limit plate plays its due role, It also avoids the excessive concentrated radial welding stress caused by direct welding on the same section of the shaft wheel.

2. The limit plate is directly welded to the shaft with triangular reinforcement.

The advantage of this method is that the process is simple, but the disadvantage is that the triangular rib is less welded, the strength is not enough, and the welding is more, and the radial welding stress concentration is formed.

China Coal Group Sents New Suspended Mining Single Hydraulic Prop to Shanxi And Inner Mongolia
12 June 2024

On June 12, the new suspended mining single hydraulic prop independently developed and produced by China Coal Group was sent to Shanxi, Inner Mongolia and other places, which once again set off a sales frenzy.

China Coal Group Ships A Batch Of Mining Flat Trucks To Wenzhou
11 June 2024

On June 11, a batch of high-performance mining flat trucks independently researched and produced by China Coal Group was about to embark on a journey, and its destination was Wenzhou City, Zhejiang Province, a coastal city in eastern China. This is not just an ordinary transportation of commodities, but the interplay of industrialized power and the pulse of the new era of development.

China Coal Group Holds The First Half Of 2024 Business Analysis Meeting
08 June 2024

On June 8, the first half of 2024 business analysis meeting of China Coal Group was grandly held in the meeting room of the Group's headquarters, mainly focusing on the 321 strategic objectives formulated by the Group, comprehensively sorting out and summarizing the first half of the production and operation of the work situation, analyzing the causes of the problem, solving the problems and deficiencies in the current operation and sales work, judging the business situation and discussing the ideas and countermeasures, and arranging and deploying the work in the second half of the year. General Manager of China Coal Group Han Yong, members of the leadership team, general managers of e-commerce companies, plant managers of the Manufacturing Corporation, group companies and the heads of functional departments of more than 70 people attended the meeting.

Shandong China Coal Mining Support Equipment Co., Ltd. was founded in the 1990s with more than 1100 employees. It now has 53 professional companies, 3 Hong Kong companies, 1 British Cayman company and 1 American company. It is a large diversified industrial group integrating intelligent equipment manufacturing, e-commerce, software research and development and intelligent logistics, which is cultivated and supported by the Ministry of industry and information technology, the Ministry of Commerce, the development and Reform Commission, Shandong Province and Jining City.
Form Name
Copyright © 2022 Shandong China Coal Industry & Mining Group Co., Ltd. Sitemap


Address:No.11, North of Kaiyuan Road, High-tech Zone, Jining City, Shandong Province, China