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My kid's best friend

Discussion in 'PJ Post Hall of Fame!' started by Days, Feb 13, 2018.

  1. The Sage of Main Street

    The Sage of Main Street Governor

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    Europe Sent Its Best to Marginalize the World's Worst

    I'm referring to nationalist settler colonialism, not the Left/Right New World Order. As what used to be done in America, those who had been left out at home should evict the natives and show what they can do when not squashed by the heiristocracy.
     
  2. Days

    Days Governor

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    meanwhile, one day in the evolution of scaffold hoist design....

    A turning point was reached...

    this went out today:




    February 25, 2019


    Dear Harold, Mike, and Al,

    Going to the 30” frame and the 20” diameter drum stop gear and the 10” diameter 2nd guide gear enlarged the hoist in ways I did not expect. The tracks are now resting fully on the mainframe, where I always wanted them, and there’s plenty of clearance from the guide trolley sheave to the drum. But especially, moving the moorings for the worm gears to the vertical solar panel frame plate made it possible to change wire rope sizes in the field. These are no longer “hoist models” … this is now, one hoist, that can adapt to 10 different size wire ropes.

    So, I’ve got to change the description again, to reflect the hoist that has emerged. The Hoist Description is written to the prospective ground floor investor, but it could also be used to advertise/market the hoist … that’s Harold’s call. I will mail the updated description with my next letter on the hoist.

    So, you know…

    • ' the 12 mm wire rope has a 1180-meter reach (3870 feet).
    • · The 7/16” wire rope has a 1300-meter reach (4265 feet)
    To go that high, the safety factor on the wire rope would be 5:1. Unless, that is, if it turns out 12 mm titanium wire rope is strong enough to keep it at 6:1, but I’m sure the 7/16” wire rope would be at 5:1. That’s why I wasn’t going to change the description, but then I realized that I have to describe the hoist differently than calling the different sizes of wire rope “models”… it is no longer a model, this is now a feature, the hoist can handle 10 different sizes of wire rope, that’s a feature of this singular model.

    There are still more features of the hoist and the davit that I haven’t gotten to yet. The brake pad now loads in front of the drum stop. To change the brake pad, pull the first guide gear, unbolt and slide back the drum stop, then unbolt and change out the pad; I haven’t decided if the brake pad (and its retainer plate) should be 3 pieces or 4. I still think the brake pad will last 10,000 years, but it has to be serviceable. Everything is designed to be serviceable; I think about how the parts can be easily removed and replaced, I try to make it all as simple as possible.

    Love, Damian
     
    Last edited: Feb 25, 2019
  3. Winston

    Winston Do you feel lucky, Punk

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    Ran out of the meds huh?
     
    • Like Like x 1
  4. Days

    Days Governor

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    What do you get when you cross three penguins with a high tar cigarette?

    3 angry penguins
     
  5. Winston

    Winston Do you feel lucky, Punk

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    You write 400 chapters about something meaningless then continue about smoking penguins...…………..……..

    There are all night pharmacies you know
     
  6. Days

    Days Governor

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    which "something meaningless" are you referring to?
     
  7. Winston

    Winston Do you feel lucky, Punk

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    Dude there is nothing meaningful about your imaginary smoking penguins. Something meaningless is the description of everything you write.

    Yo, you find proof of 25 feet tall people yet
     
  8. Days

    Days Governor

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    Winston = a high tar cigarette

    trolling my writings in PJ hall of fame = crossing my avatar = pissing me off.

    get it? now get lost
     
  9. Winston

    Winston Do you feel lucky, Punk

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    Am I interrupting your delusion?
     
  10. Days

    Days Governor

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    to put it mildly.

    My family was the largest manufacturer of permanent installation window washing equipment in the western hemisphere. That was more than a delusion, my friend, that was my career. I was the finest field service technician on the planet. I built the largest maintenance service program in the nation and helped define our codes and laws and spread a much greater understanding of rigging. Saved a lot of lives.

    Who the hell are you to come along and slander my life and call my writings delusions? You don't know me, you are some idiotic internet troll. Keep it up and I'll get you banned, you won't be the first.
     
  11. Days

    Days Governor

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    the updated Hoist and Davit description:



    The Hoist and Davit


    This is the first scaffold hoist specifically designed for super tall buildings. Conventional scaffold hoists are not suited to the performance demands of the 1200 foot + environment, if our industry is going to gain access to the exterior of super tall buildings, we must enter a whole new paradigm of hoist performance. This hoist is a battery driven gearmotor hoist that employs two 60 Volt DC motor/ generators working in tandem behind air cooled planetary gearing. It is a much larger scaffold hoist than the world has ever seen, the hoist is 8 ½ feet tall, 5 feet wide, and 4 feet deep, constructed entirely from titanium. The hoist employs a 15” diameter drum and weighs roughly 2800 pounds. Below and in front of the stage, located on the upper and lower levels of frame, there are two 7” diameter x 40” rollers. The frame suspends a wire rope drum tube between two motor housing tubes, sending power through two gearings that meet in the center of the drum tube. The gearing provides a 3600:1 torque reduction for both motors, making the hoist extremely powerful. 1400 RPM motors engage inline gearing that provide 100% throughput to the drum. The 150:1 gear ratio turns the drum at 9 1/3 RPM … resulting in a base wrap that climbs 36 ½ feet per minute. The hoist handles six English sizes (ranging from 7/16” to ¾”) and 4 metric sizes (12mm – 18mm) of wire rope. The highest reach of the hoist is 1300 meters (4265 feet) wrapping 7/16” wire rope.


    There is no AC on this hoist. A total of 4 cubic feet of lithium polymer batteries provide a large reservoir of power for a system that is constantly receiving and using a small flow of voltage. Two battery packs are recharged by a 12” x 16” solar panel located on the roof of the hoist. A laser is fastened on the end of the davit boom and aimed directly down at the solar panel. Since the batteries are onboard, there is no way to lose power, but if the laser fails, there should be sufficient charge in the batteries to climb to the roof. The laser runs on the building’s power feed to the roof, the laser converts that power source to light, which the solar panel then converts back to electricity; hence, the hoist batteries are recharged in use, and the DC power controls maintain the battery charge level at 95%. The idea is to take advantage of lithium polymer batteries being very good at discharge and recharge. In essence, the laser does the job of an electric cord… it feeds power to the stage, only it does it wireless.


    There are no load-free lines such as an electric cord or nylon/polyurethane rope, the wire rope load line is the sole line on each end of the stage. Guard rail is structural; the operator can tie off to the back rail, while the pick is secured to the front guard rail. The hoist is balancing a front side and a back side, by positioning a heavy ballast in the bottom middle. The front two-foot work area is completely unobstructed, while the back side of the hoist has the fairlead, spreader, drum guide, batteries, power controls, and solar panel. The load line enters the fairlead 7” behind the stage. The load line is captured by tension rollers in the upper fairlead, which then feed a swivel sheave in the lower fairlead, the fairlead swivel sheave turns freely as does the spreader trolley it feeds, both are controlled by the drum guide trolley they feed, and the drum guide trolley is geared to the drum. The spreader is a precision spreader, there is absolutely zero pull to any point on the drum by the wire rope being under load. There are no electrical controls to the wire rope guide… it is solely an interaction of mechanical gears… impossible to fail. When the drum reverses direction, so does the guide; if the drum wrap hits the rim and heads back the other direction, so does the guide… the drum turns everything, the gears only turn if the drum turns. With over 6 vertical feet from the tension rollers in the upper fairlead to the capture of the wire rope on the drum, this hoist takes platform stability to a whole new level, the hoist is also balanced from left to right and front to back.


    Down direction is power off, pushing the pendant down button only releases the brakes… the hoist then free falls, gravity runs the down direction. The DC motor/generator recharges the battery in down direction, while the gearing and the generator constantly limit the drum rotation to 9 1/3 RPM. The drum will stop turning the moment the hoist sets down, and the wire rope remains taut with the tension rollers in the upper fairlead at all times. The drum is braked on each end by 2 giant friction brakes which take the entire load directly, each brake has 200 square inches braking area. It requires 12 1/6 pounds per square inch to stop the max. load (4865 pounds) of the ½” wire rope hoist. The brake is spring loaded, making the brake always on, the springs are accompanied by solenoids that hold off the brake when moving.


    I designed a davit roof truck that can suspend this hoist over the side and clear any size wall. The davit is really an electric crane. The 5 feet x 7 ½ feet davit truck supports a mast of 3 stages that fit inside each other, and a boom that swivels on top. The truck, mast, and boom weigh about 7 tons, and then there is boom counter weight of an additional 3 tons, so all total, 10 tons. The davit truck is also counterweight for the boom; when a drop site is chosen, the davit is jacked in the four corners, the hoist and boom counterweight are lifted (simultaneously), then the boom swivels on the mast and the stage is swung over the wall, then the boom ties back to the roof truck, there’s no need to tie down the truck to the building. The proper boom counter weight will be provided for stage weight and payload; the boom stays in balance, even at 500 pounds over the optimum working payload. A traction hoist and 2 pulleys, rigged to the boom counter weight, lift the mast into place, and then lift the boom counter weight, suspended from two pulleys on the back of the boom. Two men should be able to set up the mast, collapse the mast, and handle moves between drops. A pavement needs to be provided for the davit truck.


    It is temporary staging, custom built to work for each building. It is nearly zero maintenance, rugged equipment that will last as long as the building it is built for. It is high performance equipment, the stage is extremely stable, fast, and the wire rope guide wraps so accurate, the wire rope should last many years between changes. It is a powerful hoist, with a heavy duty super structure, that can handle heavy use as well as heavy projects. And it is wireless technology, onboard power, that puts full control of movement in the hands of the men on the stage. This is a very safe hoist that will never get stuck in the air for any reason.
     
  12. Days

    Days Governor

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    okay the hoist is now capable of seven wire rope sizes, while the davit truck has gone to two models....


    The Hoist and Davit

    This is the first scaffold hoist specifically designed for super tall buildings. Conventional scaffold hoists are not suited to the performance demands of the 1200 foot + environment, if our industry is going to gain access to the exterior of super tall buildings, we must enter a whole new paradigm of hoist performance. This hoist is a battery driven gearmotor hoist that employs two 60 Volt DC motor/ generators working in tandem behind air cooled planetary gearing. It is a much larger scaffold hoist than the world has ever seen, the hoist is 8 ½ feet tall, 5 feet wide, and 4 feet deep, constructed entirely from titanium. The hoist employs a 15” diameter drum and weighs roughly 2800 pounds. Below and in front of the stage, located on the upper and lower levels of frame, there are two 7” diameter x 40” rollers. The frame suspends a wire rope drum tube between two motor housing tubes, sending power through two gearings that meet in the center of the drum tube. The gearing provides a 3600:1 torque reduction for both motors, making the hoist extremely powerful. 1400 RPM motors engage inline gearing that provide 100% throughput to the drum. The 150:1 gear ratio turns the drum at 9 1/3 RPM … resulting in a base wrap that climbs 36 ½ feet per minute. The hoist handles four English sizes (7/16” ¾” 9/16” 5/8”) and 3 metric sizes (12mm 14mm 16mm) of wire rope. The highest reach of the hoist is 1300 meters (4265 feet) when wrapping 7/16” wire rope.


    There is no AC on this hoist. A total of 4 cubic feet of lithium polymer batteries provide a large reservoir of power for a system that is constantly receiving and using a small flow of voltage. Two battery packs are recharged by a 12” x 16” solar panel located on the roof of the hoist. A laser is fastened on the end of the davit boom and aimed directly down at the solar panel. Since the batteries are onboard, there is no way to lose power, but if the laser fails, there should be sufficient charge in the batteries to climb to the roof. The laser runs on the building’s power feed to the roof, the laser converts that power source to light, which the solar panel then converts back to electricity; hence, the hoist batteries are recharged in use, and the DC power controls maintain the battery charge level at 95%. The idea is to take advantage of lithium polymer batteries being very good at discharge and recharge. In essence, the laser does the job of an electric cord… it feeds power to the stage, only it does it wireless.


    There are no load-free lines such as an electric cord or nylon/polyurethane rope, the wire rope load line is the sole line on each end of the stage. Guard rail is structural; the operator can tie off to the back rail, while the pick is secured to the front guard rail. The hoist is balancing a front side and a back side, by positioning a heavy ballast in the bottom middle. The front two-foot work area is completely unobstructed, while the back side of the hoist has the fairlead, spreader, drum guide, batteries, power controls, and solar panel. The load line enters the fairlead 7” behind the stage. The load line is captured by tension rollers in the upper fairlead, which then feed a swivel sheave in the lower fairlead, the fairlead swivel sheave turns freely as does the spreader trolley it feeds, both are controlled by the drum guide trolley they feed, and the drum guide trolley is geared to the drum. The spreader is a precision spreader, there is absolutely zero pull to any point on the drum by the wire rope being under load. There are no electrical controls to the wire rope guide… it is solely an interaction of mechanical gears… impossible to fail. When the drum reverses direction, so does the guide; if the drum wrap hits the rim and heads back the other direction, so does the guide… the drum turns everything, the gears only turn if the drum turns. With over 6 vertical feet from the tension rollers in the upper fairlead to the capture of the wire rope on the drum, this hoist takes platform stability to a whole new level, the hoist is also balanced from left to right and front to back.


    Down direction is power off, pushing the pendant down button only releases the brakes… the hoist then free falls, gravity runs the down direction. The DC motor/generator recharges the battery in down direction, while the gearing and the generator constantly limit the drum rotation to 9 1/3 RPM. The drum will stop turning the moment the hoist sets down, and the wire rope remains taut with the tension rollers in the upper fairlead at all times. The drum is braked on each end by 2 giant friction brakes which take the entire load directly, each brake has 200 square inches braking area. It requires 12 1/6 pounds per square inch to stop the max. load (4865 pounds) of the ½” wire rope hoist. The brake is spring loaded, making the brake always on, the springs are accompanied by solenoids that hold off the brake when moving.


    I designed a davit roof truck that can suspend this hoist over the side and clear any size wall. The davit is really an electric crane. The davit truck supports a mast of 3 stages that fit inside each other, and a boom that swivels on top. There are two models, one is 5 feet x 8 feet, and the other is 5 feet x 10 feet, with their boom counter weight, both weigh about 12 tons. A traction hoist and 2 pulleys, rigged to the boom counter weight, lift the mast into place, and then lift the boom counter weight, suspended from two pulleys on the back of the boom. The davit truck is also counterweight for the boom; when a drop site is chosen, the davit is jacked in the four corners, the hoist and boom counterweight are lifted (simultaneously), then the boom swivels on the mast and the stage is swung over the wall. The proper boom counter weight will be provided for stage weight and payload; the boom stays in balance, even at 500 pounds over the optimum roof payload. Then the boom ties back to the roof truck, there’s no need to tie down the truck to the building. Two men should be able to set up the mast, collapse the mast, and handle moves between drops. A pavement needs to be provided for the davit truck.


    It is temporary staging, custom built to work for each building. It is nearly zero maintenance, rugged equipment that will last as long as the building it is built for. It is high performance equipment, the stage is extremely stable, fast, and the wire rope guide wraps so accurate, the wire rope should last many years between changes. It is a powerful hoist, with a heavy duty super structure, that can handle heavy use as well as heavy projects. And it is wireless technology, onboard power, that puts full control of movement in the hands of the men on the stage. This is a very safe hoist that will never get stuck in the air for any reason.
     
  13. Days

    Days Governor

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    okay the hoist is still capable of seven wire rope sizes, but there is just one davit truck ....



    The Hoist and Davit


    This is the first scaffold hoist specifically designed for super tall buildings. Conventional scaffold hoists are not suited to the performance demands of the 1200 foot + environment, if our industry is going to gain access to the exterior of super tall buildings, we must enter a whole new paradigm of hoist performance. This hoist is a battery driven gearmotor hoist that employs two 60 Volt DC motor/ generators working in tandem behind air cooled planetary gearing. It is a much larger scaffold hoist than the world has ever seen, the hoist is 8 ½ feet tall, 5 feet wide, and 4 feet deep, constructed entirely from titanium. The hoist employs a 15” diameter drum and weighs roughly 2800 pounds. Below and in front of the stage, located on the upper and lower levels of frame, there are two 7” diameter x 40” rollers. The frame suspends a wire rope drum tube between two motor housing tubes, sending power through two gearings that meet in the center of the drum tube. The gearing provides a 3600:1 torque reduction for both motors, making the hoist extremely powerful. 1400 RPM motors engage inline gearing that provide 100% throughput to the drum. The 150:1 gear ratio turns the drum at 9 1/3 RPM … resulting in a base wrap that climbs 36 ½ feet per minute. The hoist handles four English sizes (7/16” ¾” 9/16” 5/8”) and 3 metric sizes (12mm 14mm 16mm) of wire rope. The highest reach of the hoist is 1300 meters (4265 feet) when wrapping 7/16” wire rope.


    There is no AC on this hoist. A total of 4 cubic feet of lithium polymer batteries provide a large reservoir of power for a system that is constantly receiving and using a small flow of voltage. Two battery packs are recharged by a 12” x 16” solar panel located on the roof of the hoist. A laser is fastened on the end of the davit boom and aimed directly down at the solar panel. Since the batteries are onboard, there is no way to lose power, but if the laser fails, there should be sufficient charge in the batteries to climb to the roof. The laser runs on the building’s power feed to the roof, the laser converts that power source to light, which the solar panel then converts back to electricity; hence, the hoist batteries are recharged in use, and the DC power controls maintain the battery charge level at 95%. The idea is to take advantage of lithium polymer batteries being very good at discharge and recharge. In essence, the laser does the job of an electric cord… it feeds power to the stage, only it does it wireless.


    There are no load-free lines such as an electric cord or nylon/polyurethane rope, the wire rope load line is the sole line on each end of the stage. Guard rail is structural; the operator can tie off to the back rail, while the pick is secured to the front guard rail. The hoist is balancing a front side and a back side, by positioning a heavy ballast in the bottom middle. The front two-foot work area is completely unobstructed, while the back side of the hoist has the fairlead, spreader, drum guide, batteries, power controls, and solar panel. The load line enters the fairlead 7” behind the stage. The load line is captured by tension rollers in the upper fairlead, which then feed a swivel sheave in the lower fairlead, the fairlead swivel sheave turns freely as does the spreader trolley it feeds, both are controlled by the drum guide trolley they feed, and the drum guide trolley is geared to the drum. The spreader is a precision spreader, there is absolutely zero pull to any point on the drum by the wire rope being under load. There are no electrical controls to the wire rope guide… it is solely an interaction of mechanical gears… impossible to fail. When the drum reverses direction, so does the guide; if the drum wrap hits the rim and heads back the other direction, so does the guide… the drum turns everything, the gears only turn if the drum turns. With over 6 vertical feet from the tension rollers in the upper fairlead to the capture of the wire rope on the drum, this hoist takes platform stability to a whole new level, the hoist is also balanced from left to right and front to back.


    Down direction is power off, pushing the pendant down button only releases the brakes… the hoist then free falls, gravity runs the down direction. The DC motor/generator recharges the battery in down direction, while the gearing and the generator constantly limit the drum rotation to 9 1/3 RPM. The drum will stop turning the moment the hoist sets down, and the wire rope remains taut with the tension rollers in the upper fairlead at all times. The drum is braked on each end by 2 giant friction brakes which take the entire load directly, each brake has 200 square inches braking area. It requires 12 1/6 pounds per square inch to stop the max. load (4865 pounds) of the ½” wire rope hoist. The brake is spring loaded, making the brake always on, the springs are accompanied by solenoids that hold off the brake when moving.


    I designed a davit roof truck that can suspend this hoist over the side and clear any size wall. The davit is really an electric crane. The davit truck supports a mast of 3 stages that fit inside each other, and a boom that swivels on top. The rear wheel drive davit truck is 5 feet x 10 feet, with the 2 ¼ ton boom counter weight, the davit truck weighs about 12 tons. A traction hoist and 2 pulleys, rigged to the boom counter weight, lift the mast into place, and then lift the boom counter weight, suspended from two pulleys on the back of the boom. The davit truck is also counterweight for the boom; when a drop site is chosen, the davit is jacked in the four corners, the hoist and boom counterweight are lifted (simultaneously), then the boom swivels on the mast and the stage is swung over the wall. The proper boom counter weight will be provided for stage weight and payload; the boom stays in balance, even at 500 pounds over the optimum roof payload. Then the boom ties back to the roof truck, there’s no need to tie down the truck to the building. Two men should be able to set up the mast, collapse the mast, and handle moves between drops. A pavement needs to be provided for the davit truck.


    It is temporary staging, custom built to work for each building. It is nearly zero maintenance, rugged equipment that will last as long as the building it is built for. It is high performance equipment, the stage is extremely stable, fast, and the wire rope guide wraps so accurate, the wire rope should last many years between changes. It is a powerful hoist, with a heavy duty super structure, that can handle heavy use as well as heavy projects. And it is wireless technology, onboard power, that puts full control of movement in the hands of the men on the stage. This is a very safe hoist that will never get stuck in the air for any reason.


     
  14. Winston

    Winston Do you feel lucky, Punk

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    Are these meant to be operated by the 25 foot tall people
     

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