Hebei Zhongche Luxing Vibration Damping Technology Co., Ltd.

Hebei CRRC Luxing Anti-loosening Technology Co., Ltd. was established on March 15, 2021, and is located at No. 3001, Tianyu East Road, Wei County Economic Development Zone. (In the courtyard of Luxing Group Corporation). Hebei CRRC Luxing Anti-loosening Technology Co., Ltd. has a total investment of 50 million yuan and a registered capital of 50 million yuan, of which: Luxing Group has subscribed a capital contribution of 20.5 million yuan in currency, accounting for 41% of the company's registered capital; Beijing CRRC invested with the proprietary technology of full-thread anti-loosening nuts, which technology The technical appraisal value is 17 million yuan, accounting for 34% of the company's registered capital; Weixian Investment Company has subscribed a capital contribution of 10 million yuan in currency, accounting for 20% of the company's registered capital; CRRC Meishan Company has subscribed a capital contribution of 2.5 million yuan in currency, accounting for 5% of the company's registered capital. The nature of the company is a joint venture limited company. Our variable thread lock nuts use a proprietary thread instead of the 30-degree angle like ordinary threads. The normal pressure of the locking thread of our variable thread nut is much greater than the tightening pressure. Therefore, the residual axial force of the anti-loosening nut we developed is about 15% greater than that of ordinary nuts. There is a 31-degree wedge-shaped slope at the bottom of the female thread. When the bolt and nut are tightened to each other, the tip of the bolt presses tightly against the wedge-shaped slope of the central star lock thread, thus generating a large locking force. Due to the change in the angle of the tooth shape, the normal force generated by the contact between the threads is at an angle of 60 degrees with the bolt axis. When our bolt and nut engage, the tooth tip at the top of the tooth is easily deformed, so that the load is evenly distributed over the entire length of the contact spiral, thereby achieving