The standard V-belt is made of an endless loop having a cross-section consisting of a force layer 1, an extension layer 2, a compression layer 3 and a cladding layer 4, as shown in Fig. The extension layer and the compression layer are composed of rubber compound, the cloth layer is composed of glue canvas, the strong layer is the main body to bear the load, divided into the curtain structure (composed of the fabric) and the rope structure (composed of glue wire) The The structure of the cord is high tensile strength, the general use of the V-belt with this structure. The cord structure is relatively soft, bending fatigue strength is better, but the tensile strength is low, commonly used in load

Not the smaller diameter of the pulley and the higher speed of the occasion. With the drive for a period of time will be due to plastic deformation and relaxation, so that the initial tension is reduced, the transmission capacity decreased, at this time under the provisions of the load G under the total deflection y becomes larger, need to re-tension. Correct installation and maintenance is to ensure that the belt drive to work properly, to extend the useful life of the tape measures, the general should note the following:

1. The axis of each pulley must maintain a specified degree of parallelism when traveling in parallel. V belt drive main and driven wheel groove must be adjusted in the same plane, the error shall not exceed 20 ', otherwise it will cause the V-belt twist to premature wear on both sides. As shown in Figure 4. The following are the same as the "

2. Set the tape can not be forced to pry into. The center distance should be reduced, the belt will be set on the pulley, and then gradually adjust the center from the tension band until the test force G to meet the specified deflection y = 1.6a / 100 up.

3. In order to avoid uneven distribution of the V-belt load, the tolerances of the belt (see the relevant manual) should be within the specified range.

4. The belt drive should be regularly checked and timely adjustment, found that the damaged V-belt should be replaced, old and new belt, ordinary V-belt and narrow V-belt, different specifications of the V-belt can not be mixed.

5. A safety shield must be installed in the belt drive. This can prevent the wound injury, but also to prevent dust, oil and other debris splash to bring the impact of transmission.