Angle Broom Bristles Will Not Turn

   / Angle Broom Bristles Will Not Turn #21  
*Are the bolts that came loose the four large ones that hold the motor to the outside of the frame?
No, It was the 12 point x 1/2" box wrench or 12 point socket headed bolts. But socket is necessary because of narrow clearance to motor body.
The large O-Ring is in between motor and drive adaptor.
I think as the motor heated up, it soften the paint between the surfaces and this may have made it easier to shake loose.
So use just a thinned out coating and let it dry well.
Rust is what I'm trying to keep under control, but I may have over did it a little.


you can still manually break the loctite and remove the bolts with a wrench?
Yes, they can still be broke loose, and added heat to thread area releases bond.

do you expect to be using the angle broom again in the next couple days, and will you update us again on how it's holding up?
Anytime it snows here downtown Mpls, the sidewalks get broomed.
The quicker it's removed, the less hardpack is left behind to scrape off.
Weather Channel has us getting more shortly.

I may be completely wrong but it doesn't seem like urethane pads (to fill the gap of a larger socket) would hold up very well.
So far steel has probably worn out quicker than a urethane cushion would. These types of cushions are used in so many applications now across the industrial and automotive fields from severe suspension components in all competition to street rod frame upgrades and industrial treads on wheels of fork lifts to roller blades to your wheeled suit case.

Even the trailer axles use it compressed as the only suspension.

I can't upgrade to this class of cushion just yet while machine is used frequently, but I'll be gathering and using a dedicated rough-neck tub any thing I find related. Your typical industrial treasure chest.

There maybe ways of using this cushion material that may have to use the entire diameter of the drum face. So there are experiments that will have to be tried I guess.
Maybe while taking a shower it will come to me.

Cheers
 
   / Angle Broom Bristles Will Not Turn #23  
I scanned and saved to file quite a few designs possible that use a urethane element in the area of flex type couplers.
But most are difficult to implement for this application and would require major machine shop activity.

So I'm thinking for simplicity that the original idea is much easier with larger socket and squeezing in the 3" drive nut into padded urethane receiver.
Then one doesn't have to reinvent the wheel. One still needs to be able to service the drum with new brushes and not make it complicated.

Working for Honda for years, I have a pretty good idea how it would be done, and some flex drive companies got close with possibilities.

Others are a bit complex, but the link below is about where it started with a simple design if made 3 times larger.

One type shown in link (top row/3rd image from left) usually are used shaft to shaft where a motor is on one end and a pump on the other end, and both devices are mounted solid. Then some misalignment is tolerated.

Vibration Mounts eStore Cylindrical Rubber Anti Vibration Mounts Rubber Neoprene Urethane Sorbothane Silicone Gel Ring Mounts

Probably a smart move would find someone's old drum trashed, and modify it ready to go.
Or complete second broom in same condition as junk.
 
   / Angle Broom Bristles Will Not Turn #24  
Is the rotating broom a good tool fresh out of the box?

I assume it's rather easy to get carried away and bash it in a moment of haste, youthful exuberance or just poor judgement.

What steps might a new potential owner take to protect the sweeper from damage?
 
   / Angle Broom Bristles Will Not Turn #25  
Is the rotating broom a good tool fresh out of the box?

I assume it's rather easy to get carried away and bash it in a moment of haste, youthful exuberance or just poor judgement.

What steps might a new potential owner take to protect the sweeper from damage?
Any obstacle that may be hidden in the path, just slow down and confirm it's not a curb for one.
That will take out the stands right off the bat and fold them under the frame of the broom.
Speed and changing elevation is your worst enemy.
Allow no bouncing of broom in transport speed.

I have to instruct those running it all the time to keep broom in the air till machine is level after entering sloped entry point of sidewalk before setting it down.

Then turn around and broom off the corner.
But they think this takes too long.
6 seconds to rotate 180 is not that long. Get used to it.
It also creates a clean point for people to get on sidewalk.

Keep the hydraulic motor facing the street, never along the path of buildings on sidewalk.
Dead head to end of block out on the street. Driving on the snow with leave ice pack on walk otherwise.

Motor towards building/
It ends up in a blind view, and could get caught on doorway, or worse, extending fire hose access ports or natural gasline ports extending off the face of buildings.

If heading into a boxed in drive that faces building, slow the throttle down to idle before throwing salt laden snow up the side of someone's building.
It could cost you that account as quick as it happened.

Common sense for parked vehicles, mail boxes, etc.

After inspection, I've had to get out of truck and clean off the building and glass. It's now like concrete to scape off.
They get one warning and then to the whipping post.

Learning how to use float mode is a lost process by most.
If they say they can, most have no idea.
Those running them with front wheels in the air have not learned how to really run a cat yet.

Float mode in cats keeps all 4 wheels on the ground with bucket at all times back dragging.
And for broom, instead of it diving into the ground from wheels falling off the curb, or etc.

This works well with bucket for pulling snow off sidewalks and following down the the curb at the same time continuing out into the street to be removed further down the block.

No adjustments are necessary as the bucket just follows any shape it comes to with 4 wheels always on the ground for total control and traction.

Not in float mode/
This wears the bucket blades (in steep angle) off much quicker than necessary. Excess shock transmitted to the machine.

In float mode/
Only the weight of boom and tool are on the ground. More than enough.
Deviations is the surface are now kept in check when back dragging and less possible damage to the machine.

Sweeping arcs back-dragging with bucket is just like using angle blade.
This is the safest tactic when along side millions of dollars of vehicles, or skyscraper glass.
As you backup, you are creating more distance between cat and vehicle.

Going forward, one should not be doing ice removal tactic (bucket in steep angle) unless the area has totally perfect surface with no seam cracks and curbs to catch.
This is number one cause of broken booms, nose bleeds, and broken cylinder rams. I've seen my share.

I approached driver of cat, asked him why the glass was hanging out of the door.
He had no clue that he had been knocked out when his head hit the glass.
That day could of ended much differently.
Careless speed in known zone of cut off steel posts in parking lot.
Back-dragging this zone first would eliminate any problem right over the posts.
Another case of, 6 seconds too long syndrome.

That should give 5 years of service to your broom right out of the box with
only a broom fill each season. That's in heavy commercial use.
Packing in more brush sections will extend their life vs staggered fill.
I'll save some of the good removed ones to back up the new ones.
 
   / Angle Broom Bristles Will Not Turn #26  
will you update us again on how it's holding up?
Absolute. The last 2 tours including fresh 4" today with roughly 12hrs has been flawless.
Cheers
 
   / Angle Broom Bristles Will Not Turn
  • Thread Starter
#27  
Hello, everyone, just wanted to let you know my angle broom repair has been completed. An acquaintance of mine, who has done welding for me before, took the 84" broom to his shop. Once he got into the repair, he said it was not as difficult as he imagined it might be.

He did the work at his shop, so I have not seen the interior of the repair but this is what he did: he cut out a correct sized opening for a new socket, then welded in the socket, he straightened the frame (which had been bent slightly out of square before I got the tool), he created new, robust, securely locking landing legs (they lock in the up and down positions with hitch pins with D clamps on them), he created a holding receptacle to contain the hydraulic coupler ends of the tool's hoses when not in use, he painted all of the new work...

We hooked up the broom and cleared the driveways here for twenty minutes or so and all seems to work fine. While the tool is engaged I noticed a very slight wobble on the side of the frame where the hydraulic motor is attached, which tells me something is not exactly square-- but given the 84" width and the forces applied, I'm not surprised. My use of the tool is typically very infrequent and light, so I'm inclined to see how it goes.

I really appreciate Phil's input on the repair and also on the "best practices" operation guidelines above. I'm sure the mistake I made was allowing the brushes to pack with snow and freeze -- then try to stop the brush, loaded with lots of extra weight and momentum at high revs in the air. To be clear, from now on I'm only going to engage or disengage the brush at lowest rpms and with light contact to the ground.

For interested parties' information, my first approach for a solution involved the Bobcat dealer, with new parts, freight, labor, and time at about $2,000 and two to three weeks. In contrast, this repair was characterized by a very experienced shop mechanic as "easy," was completed in a couple hours, and in contrast my cost was extremely low. I will update this topic as needed to post updates about the continuing operation after this repair.
 
   / Angle Broom Bristles Will Not Turn #28  
he created a holding receptacle to contain the hydraulic coupler ends of the tool's hoses when not in use, he painted all of the new work....
Absolute great idea with the hoses. I wanted to add the same feature for the hoses before releasing it back to the world.

You have to be a Happy Camper compared to a couple weeks ago.

Cheers
 

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