курсовой ПРИВОД ЦЕПНОГО КОНВЕЙЕРА

PP + drawing in autocad

Initial data:

Traction force F, 3.4 kN

Chain speed V, m / s 0.95

Number of teeth z 8 stars

Chain pitch t, \u200b\u200b250 mm

The utilization during the year, 0.6 KG

Utilization rate during the day, COP 0.42

Lifetime T, 9 years

Statement of work. 4

1. kinematic calculation drive conveyor 5

1.1 Selecting the motor 5

1.2 gear ratio actuator 5

1.3 Frequency and angular velocities of shafts 6

1.4 torques on the shafts 6

2. Calculation of V-belt transmission 7

2.1 Design calculation 7

2.2 Verification calculation 8

3. Design calculation of gears 9

3.1 Calculation of the high-speed stage taper 9

3.1.1 The choice of materials and definition of allowable stresses 9

3.1.2 Definition of the basic parameters of the high-speed conical

gear train 10

3.1.3 Calculation of contact pressure 11

3.1.4 Efforts operating in a high-speed gear train 12

3.1.5 Checking the strength of the tooth bending 12

3.2 Calculation of the low-speed cylindrical stage 13

3.2.1 The choice of materials and definition of allowable stresses 13

3.2.2 Identification of the main parameters of a low-speed gear 14

3.2.3 Calculation of contact pressure 14

3.2.4 Efforts operating in low-speed gear train 15

3.2.5 Checking the strength of the tooth bending 16

4. Preliminary design 17

4.1 Design calculations shafts 17

4.2 Selecting the type and mode of installation of bearings 18

4.3 Construction of the pinion shaft and the gear 18

4.4 Construction of the housing 18

5. Calculation of key connection 20

6. Selection of roller bearings on the given resource 21

7. Calculation of shafts on static strength and fatigue resistance 26

8. Selection of lubricants and lubrication systems 33

9. Choice of couplings 34

List of sources used 35