The origin of the door wheels：
According to the General History of the World, wheels first appeared in Mesopotamia, and in China, wheels appeared around 1500 BC. By rolling the wheel, the friction with the contact surface can be greatly reduced, and the heavy objects can be easily transferred from one place to another place, effectively reducing the labor cost.
Applying a wheel to a door is a big initiative. The door wheel originated in China and spread to Korea, Japan and other countries along with Chinese culture. In some ancient Chinese paintings can be seen scattered sliding doors, such as the landscape paintings of the Song Dynasty, there are sliding doors.
At the beginning of the 19th century, the British Stephenson produced the world's first train. The emergence of the train promoted the invention of rails and train wheels with flanges. Train wheels with flanges are conducive to preventing trains from skidding and derailment when running at high speed or turning. The design of this train wheel was later applied to door wheels.
At the beginning of the 19th century, the British Stephenson produced the world's first train. The emergence of the train promoted the invention of rails and train wheels with flanges. Train wheels with flanges are conducive to preventing trains from skidding and derailment when running at high speed or turning. The design of this train wheel was later applied to door wheels.
At the end of the 20th century, the demand for door wheels grew. However, before 2002, there were almost no professional manufacturers of door wheels in China, and the door wheel market was occupied by foreign brands such as Taiwan, the United States, Germany, Japan and so on. However, no domestic enterprises could compete with them. Domestic manufacturers of Dinggu Hardware first developed and produced hanging wheels. The production of the door wheel whether in technology or in quality have caught up with the world's level of lifting wheel, and even in some aspects have surpassed.
The material of the lifting wheel is quite diverse, the main shell material includes stainless steel, zinc alloy, copper alloy, etc., with stainless steel wire drawing, pearl branding, bright branding, bright light and other surface treatment.
Material of door wheel:
According to the material of door wheel, there are metal roller, solid plastic roller, plastic bearing roller, fiber nylon bearing roller and multilayer composite roller. Common plastic roller texture is soft, can only be used for less than 60KG of the door, metal roller strength, but in contact with the track easy to produce noise; POM has good mechanical properties, its fatigue resistance is the highest in thermoplastic, its elastic modulus is better than nylon 66, ABS, polycarbonate, wide use temperature. POM plastic roller hard texture, smooth sliding, durable, material performance is difficult to control, only a few domestic manufacturers can produce, using solid POM roller, the bearing is placed in the middle of the main body, protection, make the sliding effect is better, but also more durable.
Post time: Apr-13-2021