Building a vibrating plate compactor

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Discussion Overview

The discussion revolves around the construction of a vibrating plate compactor intended for compacting dirt and gravel for a driveway. Participants explore design considerations, particularly focusing on the exciter mechanism and the integration of a horizontal shaft engine.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant proposes using a horizontal shaft engine with a pipe and pillow block bearings to create a vibrating mechanism, questioning the ideal weight for the offset on the shaft.
  • Another participant emphasizes the importance of preventing vibration from affecting the engine and output shaft, suggesting the use of Vee belts with a floating elbow to couple the engine to the vibrating eccentric.
  • There is a repeated caution about the potential damage to the engine and bearings if vibrations are improperly managed.
  • A request for a sketch of the proposed design is made, indicating a need for visual representation to facilitate discussion.
  • A link to a parts diagram is shared, which may assist in understanding compactor design components.

Areas of Agreement / Disagreement

Participants express concerns about engine vibration and its effects, suggesting a general agreement on the need for careful design to mitigate these issues. However, there are differing opinions on the specifics of the design and the best methods to achieve effective vibration without damaging components.

Contextual Notes

Participants have not reached a consensus on the ideal weight for the exciter or the best method to couple the engine to the vibrating mechanism. There are also unresolved questions regarding the mounting of the engine and the overall design approach.

Who May Find This Useful

Individuals interested in DIY engineering projects, particularly those focused on construction equipment or compacting machinery, may find this discussion relevant.

stryped
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Thinking of building a vibrating compactor to compact dirt and gravel for a new driveway section. I already have a horizontal shaft 13 horse honsa engine. I have some scrap steel. My question is concerning the exiter/vibrator. I was thinking of mounting 2 pillow block bearings with a pipe. A pulley to spin it, and some sort of weight offset on the shaft. Would would be the best weight to use and how do i determine the ideal amount? Any advice on this project is greatly appreciated!
 
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It is important that you do not vibrate the engine or it will fall apart, I have seen it done. It is also important that you do not apply vibration to the output shaft as that will overload the bearings, I have also seen that done.

If you can use two Vee belts with a floating approximate 90° elbow to couple the static engine to the vibrating eccentric you should not have problems. You just have to work out how, or on what, to mount the engine so it does not vibrate. 13 HP is a lot of vibration. Do you need the massage?

Maybe a sketch of your concept would help.
 
Baluncore said:
It is important that you do not vibrate the engine or it will fall apart, I have seen it done. It is also important that you do not apply vibration to the output shaft as that will overload the bearings, I have also seen that done.

If you can use two Vee belts with a floating approximate 90° elbow to couple the static engine to the vibrating eccentric you should not have problems. You just have to work out how, or on what, to mount the engine so it does not vibrate. 13 HP is a lot of vibration. Do you need the massage?

Maybe a sketch of your concept would help.
Good idea. Any idea what i could use to sketch my idea so as to attach it here? I am noy much of a drawer...
 
Looking at the below parts diagram may give you some help understanding what is involved i a compactor design.

https://www.jackssmallengines.com/jacks-parts-lookup/manufacturer/green-machine/homelite/miscellaneous/hcp80-plate-compactor-ut-06042/eccentric
 

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