Single-stage worm gear box

Contents

Technical Proposal

1. Kinematic calculation and selection of electric motor

1.1 Design selection of gear ratio

1.2 Calculate the total efficiency of the Drive

1.3 Capacity calculation

1.4 Required power on the Electric motor shaft

1.5 Selection of El motor

1.6 Gear Ratio Refinement

1.7 Torques on shafts

Sketched Design

2. Worm Gear Calculation

Allowable contact stresses

Allowable bending stresses

2.1 Calculation of geometric dimensions of gear box shafts

2.2 Type Selection and Installation Diagram of Bearings

2.3 Selection of key for connection of gear wheel and shaft

2.4 Gearbox sketch layout

2.5 Design of housing elements

2.6 Selection of fasteners

2.7 Cuff seal

2.8Making of drain holes

2.9 Design of other structural elements of housing parts

2.10 Manhole covers

2.11 Selection of lubricants and lubrication system

Technical Project

3 Low-speed shaft calculation

4. Calculation of rolling bearings

5. Calculation of bolted connection

Working documentation

Technical description of the drive

Gearbox Assembly Order

Drive Maintenance

List of used literature

Technical description of the drive

Developed product of individual production "Worm gear." In accordance with the specification, the rotation speed of the drive shaft of the machine is 30 rpm, and the operating torque is 450 N * m, the rotation of the drive shaft is reversible. The nature of the load with which the drive works: the variable is calm. Loading mode: constant. Maximum load due to surmountable overloads Tmach/T = 1.6

Gearbox Assembly Order

Prior to assembly, inner cavity of housing is thoroughly cleaned and covered with oil-resistant paint. Further, roller conical bearings are put on the worm, preheated in oil to 80... 100 degrees. The assembled worm is inserted into the housing. Then worm wheel is assembled, first key is laid and wheel is pressed until stop against shaft collar; Then spacer bushing is put on and roller conical bearing is installed

hippers heated in oil. Assembled shaft is laid in base of body and cover of body is put on. To adjust the worm engagement, it is necessary to shift the entire set of the shaft with the worm wheel in the axial direction until the plane of the wheel coincides with the axis of the worm. This is achieved by transferring a part of the gaskets from one side of the body to another.

The case is pulled together with bolts by M10 and side covers of bearings M10 bolts, after the established cuffs and the greasing material (Litol24) put plastic in bearing knots. The parting plane is covered with a thin layer of UT34 sealant.

I-T-D-460 oil is poured through the inspection hole.

Drive Maintenance

After the first 150 hours of operation in the gear box, replace the oil, check the engagement. Oil is drained through the drain hole in the reduction gear box. Once a season, oil is changed in the reducer. The cleanliness of the drive and the ambient temperature of the gearbox shall be monitored from + 10 ° to + 30 ° C. Drive service life with proper operation and proper maintenance L = 0.6 * 104 hours.