With the rapid development of small and medium-sized mine cars in China, the demand for scraper winches is increasing. According to the statistics of the main production plants, the annual output is nearly 20,000 units. Practice has proved that the scraper winch is an economical, practical, adaptable and reliable stope mining equipment, and its scope of use is still expanding. China has been producing DPJ series scraper winches since 1960. We have accumulated some experience in manufacturing, operation and maintenance. Some improvements have also been made in the scraper winch structure.
Due to the continuous development of mining technology, higher performance and quality requirements for scraper mining equipment are also put forward. In recent years, we have conducted on-site investigations on dozens of users with different mining methods and different application conditions, and have mastered the application status and existing problems of scraper winches in various types of mines. The different requirements of the harrow bucket provide a reliable basis for product design improvement and upgrading. At present, the DPJ series scraper winches produced by various domestic factories are based on the improved design of the former Soviet Union electric rake, which has a history of more than 30 years. Despite several improvements, the basic structure is still a Soviet-like model. Compared with the industrially developed regions such as the United States, Britain, and France, there are still considerable gaps in technical performance and product quality, such as relatively laborious operation and difficulty in overhauling individual transmission parts. Therefore, we are producing scraper winches at home and abroad On the basis of the investigation of usage, the performance and structure were compared and analyzed, and the DPJ series scraper winches were updated.
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