Design of plunger pump

Contents

Job for course work

Source Data

Definition of the law of movement of the mechanism

Sizing Mechanism Links

Definition of transfer functions of the mechanism

Determination of the given moment of inertia

Determination of total reduced moment

Define Summary Work

Determination of kinetic energy of the second group of links

Determination of kinetic energy variation of the first group of mechanism links

Determination of required moment of inertia of fly masses

Determination of moment of inertia of additional fly mass (flywheel)

. Determining the angular velocity of the start link

. Determining the Angular Acceleration of the Start Link

Power calculation of the mechanism

Initial data

Building a Mechanism

Building a Velocity Plan

Build an acceleration plan

Defining Inertial Characteristics

Group of links 2-

Primary mechanism

Gear and planetary gear design

Geometric calculations of involute external gear gears

Select Offset Factors

Construction of wheel tooth profile made by rack tool

Construction of the designed gear train

Planetary Gear Design

Check the gear ratio of the planetary gear mechanism graphically

Design of cam mechanism

Source Data

Building kinematic diagrams using graphical integration

Determining the Basic Dimensions of the Cam Mechanism

To Create a Cam Profile

Plot the pressure angle

Cam Design Results

Conclusion

List of literature used

Applications

Application A. Mathcad Calculation Utility

Appendix B. Calculation in the ZUB program

Paper

Explanatory note for the course work "Design and study of plunger pump mechanisms" contains 57 pages of typewritten text, 4 figures, 12 tables, 2 annexes. It consists of 4 parts, 6 sources were used for writing.

Keywords: main mechanism of plunger pump; the law of movement of the driving link; fly mass; kinetostatic force calculation; cylindrical involute gearing; two-row planetary mechanism; cam mechanism.

The explanatory note contains: the design of the main mechanism of the plunger pump, the definition of the law of motion of the drive link, the calculation of the additional fly mass, the kinetostatic power calculation of the main lever mechanism, the design of the cylindrical involute gear train, the design of the two-row planetary mechanism.

Plot the pressure angle

When designing a cam mechanism, a graph is plotted on the design sheet to change the pressure angle as a function of the cam rotation angle. To a certain extent, this graph is a check graph, since it shows that in any position of the cam the pressure angle does not exceed the specified permissible value.

Note that by definition the pressure angle occurs only in the pusher removal phase. If the cam is non-reversible, then the calculation of the pressure angle function and its image should be limited to this phase only. However, if the cam is reversible, the removal phase in one direction of rotation of the cam becomes the approach phase in its reverse direction of rotation. Accordingly, in the reverse direction of rotation, the removal phase will be the forward approach phase. Therefore, for the reverse direction of rotation, it is necessary to plot its pressure angles, limited only to the phase of removing the reverse direction of rotation. Typically, for clarity, these two plots for the two cam rotation directions are aligned in one and a pressure angle variation graph is obtained for the working cam profile rotation angle.