Electric loader project

Contents

1. Traction calculation

1.1. Forces acting on the loader during uneven movement of the machine along a straight section of the track. Wheel selection

1.2. Selection of the engine of movement

1.3. Capacity balance

1.4. Check of wheel adhesion to support surface

2. Cross Country Calculation

3. Stability calculation

3.1. Longitudinal stability

3.2. Lateral stability

4. Steering calculation

4.1. Calculation of motion resistance forces during rotation

4.2. Kinematic and power calculation of steering gear

5. Design of lifting mechanism

5.1. Determination of lifting force

5.2. Selection of diameters of hydraulic cylinders

5.3. Calculation of operating fluid flow rate

5.4. Calculation of hydraulic cylinders of frame tilting mechanism

6. Calculation of manoeuvrability

7. Calculation of loader power supply elements

7.1. Load lifting power

7.2. Power consumed for wheel rotation

7.3. Calculation of energy parameters

8. Check of movement mechanism units

9. Control system

List of literature

9. Control system

The designed electric loader has the following actuators - two AC motors: an electric motor of the movement mechanism and a hydraulic pump motor.

List of electrical equipment used and required for operation:

- lighting lamp;

- direction indicator;

- "stop signal";

- audio signal;

- cargo sensor, determines weight of lifted load;

- tilt angle sensor, used to determine the position of the hoist;

- sensor for measurement of current lifting height of fork load grip, locking of lifting mechanism occurs when maximum height is reached with maximum weight for this height;

- speed sensor, monitors the current speed of the loader and shows it on the speedometer;

- the sensor on the accelerator pedal is a potentiometer, it acts on the pedal and sets an alternating voltage that varies in proportion to the angle of inclination of the pedal;

- temperature sensor; Monitors the current engine temperature. When the critical temperature of the engine is reached, it operates and blocks further operation of the movement mechanism;

- reverse sensor - designed to determine the direction of movement of the loader;

- parking brake actuation sensor - acts on the brake mechanism;

Auxiliary sensors performing service functions:

- oil level sensor in hydraulic system;

- oil filter status sensor;