Spring roller group
The spring roller group reduces the weight of the roller, and the cross section of the conveyor belt changes from a trapezoidal shape to a circular arc. At the same time, because the spring roller adopts a coil spring seat roller body, the running roller body always gives the conveyor belt a horizontal direction that points to the center. Force to make it have automatic deviation adjustment function. The flexibility of the spring-plate buffer rollers is very important. If the flexibility of the rollers is not good and the rotation resistance coefficient is high, the entire belt conveyor system has to pay a lot of power, consume a lot of power, and sometimes This can cause the tape to tear and the motor to burn out. In severe cases, it can cause a fire. Therefore, choosing a roller with a low coefficient of rotation resistance (less than 0.020) is an important part of the belt conveyor design and selection.
The roller seal structure is labyrinth. This seal consists of four nylon oil seals and three iron seals (including the outer dust cover). The material and structure of this seal can withstand the pressure of the hydraulic oil jack, and the sealing performance is also unsatisfactory.
Our company has always used the national standard over acid shaft. This type of shaft has three major advantages over the previous wool shaft. First, it is easy to install. Our company uses assembly line operations. The speed of each link affects production efficiency. The national standard shaft is over oil. The surface is smooth and the frictional resistance is small during hydraulic jacking; The material is good, the toughness is high, the wool shaft is brittle, and it may be cracked when it is forced to fall on the cement floor; The national standard shafts with a difference of 20 and 25 will be held tightly after assembly, which greatly reduces the radial and axial runout of the idler. The wool shaft is generally 3 or 5 lower because it is generally used in manual workshops, which is convenient for manually putting seals and bearings into bearing housings.