Motor Fixture Positioning

I m not sure what kind of motor you talking about, but for electric motor they have a lifting point normally fixed right at the top of their CG so you shouldn't have any problem position it.. please provide more info

we not only lift but also tilt the electric motor through 90 degrees for positioning.so can u suggest me anything other than the eye bolt the motor weighs 300 kgs

Correct electric motor's do have a eye bolt over the centre of C of G, but this is only ment to lift the barrel when the motor is being assembled ect ie the fiting of armature end plate's ect. The motor once asembled should be lifted via a sling of a WLL to suit the weight of the motor. The sling will be looped around each end of the motor in a cradle fashon, referance to this will be found in any Dogman-Rigger's text. NEVER lift an electric motor that has been exposed to the elements via the eye bolt NOT EVER.

Motor's car's truck's ect can be lifted with a sling of the correct R C fixed at each end of the block, diagonally opposed using cat links (designed for this purpose) they are to be screwed tightly to the machine head. The centre of the sling (F.S.W.R.)to be looped around the back of the Crn hook the legs of the sling to be crossed over the belly of the hook. The sling can then be adjusted to give the legs a diferant length, motor can then be lifted at an angle of choice.

I can't figure anything more flexible and adaptable than lifting belts made on high strengh cloth or polymer. They can fit almost around anything and be used with any lifting device without damage to the subject. To tilt teh subject, use several belts and some cushions and work lifting and lowering the motor supporting it against the ground until it is in the desired position. Nothing can be cheaper that this.

But if you are looking for a continuous process and the time is critical, you may think about a fixture that is attached to your motor with the only purpose of suporting and moving it, and then, before release, it is removed.

If it is intended to be a design exercise for students, what about a lifting device that supports a series of pulleys, that have wrapped around them those supporting belts and teh user will push and pull the belts and reposition it around the motors as required to obtain the desired movement?

Can we use a chain like a chain wrench and lift as the chain doesnt allow the motor to rotate while turning the fixture for positioning.thnx for reply

Very good point padawan. I like your idea association. Yes, it's possible, but I'd take care of somethings:

1. Be sure to use non-metallic material in the chain, or even better, use a stripe in place of the chain, or even another lifting belt that is able to grip the motor and rotate it while it's weight is supported by another one. This is because the use of metallic chains can damage your motor housing, right?

2. You still need more than one belt and lifting device, to hold the motor in more than one point and take it to another position (i.e. essentially rotating it around the CG).

3. Do not allow anyone to be bellow the motor. Think about a good method and preview some redundant safety system (maybe tie a piece of cord around the motor) just in case the supporting chain or belt slides off its place.

4. By the way, why dont you use a scrapped small electric motor from an old toy or device and try to develop something using tissue stripes, like a scale model? You'd certainly find out some problems and solutions.

Thanx for your idea. I will try that, will the chain will hold the motor while lifting and positioning since in chain wrench we are giving only torsional force. While the motor lifting and positioning is different from chain wrench since it doesnt fully provide torsional force to the chain.