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Improvement of tramcar traction mode
Views: 0 Author: Site Editor Publish Time: 2022-09-26 Origin: Site
The old tramcar traction mode is to pull the screw through the contact to transfer the force to the hook frame, and drive the motor car through the hook frame. The most vulnerable parts are the screw and nut for pulling the screw. The screw diameter is 50mm, and M48 is equipped × 4. Nuts and screws mainly bear axial tension. The maximum traction force of the tramcar is 60 kN. After flaw detection, the screw can fully bear the tension if there is no internal crack or damage. However, due to the limitation of processing quality, the force between the screws after tightening is often uneven. If the force bearing part is small, the wire may fall off.
The traction device of the new mining car has changed the style of the head and the end bracket. The head is connected with the end bracket and the car body through the traction pin shaft. The lower part of the end bracket is square box type, which can not only be used as the bearing part of the buffer spring, but also increase the contact area with the traction pin shaft. The end bracket and the car body are riveted together. The traction force is transmitted to the end bracket through the head and the pin shaft to drive the car body to run. Among the main force bearing components, the weakest link is the traction pin, which is made of 45 # steel with a diameter of 50 mm. The shear force it can withstand is about 600 kN, which is far greater than the maximum traction force borne by the tramcar. It fully meets the mine safety requirements. Therefore, the tramcar will not drop due to the damage of the traction device during its operation. At the same time, the coupler frame, pull screw and other components are omitted, saving production costs.
On October 30, Li Zhenbo, General Manager of Information Technology at Shandong China Coal Group and General Manager of Zhongyun Group, was invited to deliver a keynote presentation at an activity organized by the Teaching and Research Group of the Shandong Province Technical and Vocational Schools Admissions and Employment (Industry-Education Integration) Center. The event brought together 23 technical and vocational schools across the province and focused on innovative integration of artificial intelligence with technical and vocational education, sharing practical achievements from the front lines of industry and jointly exploring new approaches to cultivating versatile digital-skills professionals through school-enterprise collaboration.
Recently, the Zhongmei Zhiren AI system, independently developed by the Intelligent Research Institute of Shandong China Coal Group, has continued to evolve and improve. Drawing on core technologies including large language models (LLMs), retrieval-augmented generation (RAG), AI agent workflow orchestration, multimodal vision, and audio and video generation, it is building a dedicated end-to-end AI platform for China’s industrial and mining supplies sector. The platform uses independently controllable AI technology to support the digital transformation of domestic and international trade and foster new quality productive forces.
Recently, three sets of software independently developed by Shandong China Coal Industry & Mining Supplies Group Co., Ltd. have successfully passed the review of the National Copyright Administration and obtained the Computer Software Copyright Registration Certificates. The three certified achievements are all built-in agent modules of the China Coal Zhiren AI System, namely: China Coal Zhiqing Image Management Tool V1.0, China Coal Construction Machinery Foreign Trade Independent Website System V1.0, and China Coal Mining Machinery Foreign Trade Independent Website System V1.0. This marks the continuous expansion of the ecological layout of the China Coal Zhiren AI System and the further consolidation of self-developed technical barriers.
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.
