Mity Lifts Inc

MI’TY LIFTS, INC.

Tyrel RuchMike

HolzerMI’TY LIFTS, INC.

MTL – 6000Portable

Automotive Hoist

MI’TY LIFTS, INC.

Concept To create a means for

the do–it-yourself home mechanic to work under their

vehicle safely and comfortably.

MI’TY LIFTS, INC.

Concept

MI’TY LIFTS, INC.

INITIAL DESIGN IDEAS

Self contained, portable design.

Freestanding – not permanently mounted.

DC Electric motor powered.

Concept

MI’TY LIFTS, INC.

INITIAL DESIGN IDEAS

Lead screw driven.

Programmable Logic Controller (PLC Drive).

48” lifting height.

IndividualResponsibili

tiesMI’TY LIFTS, INC.

Responsibilities

MI’TY LIFTS, INC.

TYREL RUCH Design Hoist arms and saddle

assembly. Design hoist arm locking system. Research materials and

components for design.

Responsibilities

MI’TY LIFTS, INC.

TYREL RUCH Create detail drawings for

designed parts. Gantt charting &

presentation.

Responsibilities

MI’TY LIFTS, INC.

MIKE HOLZER Design lead screw drive system. Design weldment assembly and

sheet metal. Research materials and

components for design.

Responsibilities

MI’TY LIFTS, INC.

MIKE HOLZER Create detail drawings for

designed parts. Final package & presentation.

Benchmarking

MI’TY LIFTS, INC.

MI’TY LIFTS, INC.

Large Commercial Size No Portability Expensive

MI’TY LIFTS, INC.

Bulky Components

No Arm Position Locks

MI’TY LIFTS, INC.

Electric Motor & Hydraulic

Pump

MI’TY LIFTS, INC.

Hydraulic Piston & Chain Lift

System

MI’TY LIFTS, INC.

Limited access to undercar components Separate power unit Requires blocking to support pinch weld

MI’TY LIFTS, INC.

MI’TY LIFTS, INC. PROPOSAL

Proposal Our portable

automotive hoist will be capable of safely lifting a vehicle of up

to 6000 lbs to a maximum height of 48” for the home

user. MI’TY LIFTS, INC.

MI’TY LIFTS, INC.

MI’TY LIFTS, INC.

Drive Components

High power demand

NoisyPower Head

Drawbacks to StandardDrive Systems

Minimal power demandQuieter operationIntegrated components

Our Lead ScrewDrive System

1½ -4 Acme Lead ScrewBronze Drive DogTorque required to lift 3000 lbs. = 413.70 IN-LB

Lead Screw Design

9:1 Gear Ratio20° Pressure Angle20 tooth drive gear/180 tooth driven gear

Torque required to lift 3000 lbs. = 17.01 IN-LB

Gear Reduction

Dayton 1F7981 HP – 1750 RPM115V AC / 90V DC10.0A at full load

Motor Selection

Max Torque – 36.5 IN-LB

Integrated motor speed controller and brake.

Reversible

Motor Selection

1” x 48” SS Support RailsHigh Performance Self Aligning Linear Ball Bearing

Maintains hoist saddle alignment

Support Rail System

MI’TY LIFTS, INC.

MI’TY LIFTS, INC.

1750 RPM Motor Speed9:1 Gear Reduction Ratio194.44 RPM Screw Speed4 Threads Per Inch48.61 Inches Per Minute.810 Inches Per Second

Lifting Speed

¾ - 10 Anchor bolts.Permanent floor mounted anchors.

Ensures solid floor positioning.

Floor Mounting

MI’TY LIFTS, INC.

Arm locks disengage at lowest hoist position.

Arm locks engage once hoist is lifted 1”.

Arm Swing Locks

Handle allows for positioning of arms when hoist saddle is raised.

Ensures proper position of hoist arms during operation.

Arm Swing Locks

MI’TY LIFTS, INC.

Arm Swing Lock Disengaged

MI’TY LIFTS, INC.

Arm Swing Lock Engaged

MI’TY LIFTS, INC.

MI’TY LIFTS, INC.

Arm Design

MI’TY LIFTS, INC.

MI’TY LIFTS, INC.

MI’TY LIFTS, INC.

Outside Resources

MI’TY LIFTS, INC.

Outside Resources

MI’TY LIFTS, INC.

DAVID GOLDMANDAMON WRAY

Outside Resources

MI’TY LIFTS, INC.

Owner, Boulevard Sinclair Inc., Minnetonka, MN

35+ years experience

DAVID GOLDMAN

Outside Resources

MI’TY LIFTS, INC.

Service Technician,

Boulevard Sinclair, Minnetonka, MN 24 years experience

DAMON WRAY

Deviations

MI’TY LIFTS, INC.

Deviations

MI’TY LIFTS, INC.

No self contained wheels for positioning.

Use of permanent floor mounted anchors and anchor bolts.

No PLC necessary for control.

FROM INITIAL DESIGN IDEAS

COSMOS

MI’TY LIFTS, INC.

The FutureOf this Design

MI’TY LIFTS, INC.

The Future

MI’TY LIFTS, INC.

Place controllers on both sides for ease of use.

Design a mechanical latching system for the saddle.

FUTURE DESIGN CHANGES

The Future

MI’TY LIFTS, INC.

Re-integrate a Logic Controller into the design for better operation.

Design a more efficient and durable method of pairing the hoist sections.

FUTURE DESIGN CHANGES

What We Learned

From This ExperienceMI’TY LIFTS,

INC.

Learning Objectives

MI’TY LIFTS, INC.

Perform stress analysis calculations to ensure robust design.

Use of SolidWorks to create models, sub-assemblies, completed assemblies, detail drawings, and animations for demonstration purposes.

Learning Objectives

MI’TY LIFTS, INC.

Using SolidWorks Explorer to rename and organize each component to increase design functionality.

Using symmetry and simplicity in the design of each component.

Learning Objectives

MI’TY LIFTS, INC.

Working together as a team to develop the product and to integrate design changes.

Consult with outside sources toward improvement of our design.

Advice toFuture

StudentsMI’TY LIFTS, INC.

Recommendations

MI’TY LIFTS, INC.

Define clear goals for each team member.

Select a project with which you are already familiar.

Recommendations

MI’TY LIFTS, INC.

If offered, choose an internship or mold and tool design course instead of Capstone. Your time would be much better spent.

Recommendations

MI’TY LIFTS, INC.

Carefully research the product which you intend to design. Somebody may already offer something very similar…

Max – Jax Brand 6000 LB Portable Hoist

PartingShot

MI’TY LIFTS, INC.

MI’TY LIFTS, INC.

Questions?

Intelligent Questions?

Thank You