The data that should be known before design is:

Transmission power P speed n1, n2 (or transmission ratio i)

Transmission position requirements and working conditions, etc.:

2. Main parameters to be determined in the design:

With model, length Ld, number of roots z, wheel diameters dd1, dd2, center distance a, etc.

3. General steps of design:

Customized model → dd1, dd2 → Ld → a → z

4. Key points and steps for designing the main parameters of V-belt transmission

1) Determine the calculated power Pc

Pc=KAP

2) Select V-belt model

3) Determine the reference diameters d1 and d2 of the pulley

4) Verify the belt speed v

5) Determine the center distance a and the reference length Ld of the belt

Primary election a0

Initial calculation with length Ld0

After selecting the reference length Ld, calculate the actual center distance a

0.7(dd1+dd2)a0 2(dd1+dd2)

(KA is the coefficient of work situation)

V=5~25m/s

6) Verify the small pulley wrap angle α 1

7) Determine the number of roots Z to be carried

8) Determine the initial tensile force F0

The load exerted by FO on the pulley shaft

a1>120

9) Wheel structure design

Determine the type, material, and dimensions of the pulley structure, and draw a working diagram of the pulley

5. Wheel material

Cast iron, cast steel - steel plate stamping parts made of cast aluminum or plastic.