 | | Re: Crane Steering —Anders Gaasedal
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| | | (...) Hi Vineet, I think almost every vehicle use Ackermann steering, specially heavy duty vehicles, like mobile cranes. Best regards, Anders Gaasedal (URL) LEGO Trucks & Cranes> (20 years ago, 2-Mar-05, to lugnet.technic, FTX)
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| | | | | Re: Crane Steering —Steve Lane
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| | | | (...) Presumably they must have a different ackerman configuration for each axle? How do those modular trailers work, the ones with multiple lines of wheels? I'm guessing the trailer versions have a different ackerman configuration for every axle (...) (20 years ago, 2-Mar-05, to lugnet.technic)
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| | | | | | Re: Crane Steering —jan-tore skålvik
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| | | | | There are several different steering possibilites to a trailer: 1) Normal forcesteered axle where the center of the wheel are placed infront of the turning center. 2) As earlier trailers and socalled citytrailers: where there is a waier from the (...) (20 years ago, 2-Mar-05, to lugnet.technic)
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| | | | | | Re: Crane Steering —Keith Hui
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| | | | (...) I believe trailers (that you tow around) don't bother with that at all. Just a bunch of wheels, who cares if they wear down 'cause they don't follow the line perfectly? They get retreaded again and again anyway... But self-propelled trailers? (...) (20 years ago, 2-Mar-05, to lugnet.technic)
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| | | | | | Re: Crane Steering —Steve Lane
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| | | | (...) SPMT's (self propelled modular trailers) try (URL) click on transport SRL (20 years ago, 2-Mar-05, to lugnet.technic)
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| | | | | | Re: Crane Steering —Ross Crawford
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| | | | (...) Their steering is hydraulic and computer controlled (as is their suspension), each axle can be turned individually. This allows them to be tethered together in many configuration, end-to-end or side-by-side, or combinations, and all controlled (...) (20 years ago, 2-Mar-05, to lugnet.technic)
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| | | | | | Re: Crane Steering —Steve Lane
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| | | | (...) If you think about it a normal bog standard trailer has 4 wheels one at each corner, like a table has legs. This is a very stable configuration. If you built a six line modular trailer from lego (12 stub axles, 24 tyres, 12 cylinders) you (...) (20 years ago, 3-Mar-05, to lugnet.technic)
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| | | | | | Re: Crane Steering —jan-tore skålvik
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| | | | You are forgetting one thing: The system for the suspension are a locked system, where the amount of oil are the same and dont increase or decrease if you change the the height on uneven ground: (URL) airsuspensions, the only thing that controls the (...) (20 years ago, 3-Mar-05, to lugnet.technic)
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| | | | | | Re: Crane Steering —Ross Crawford
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| | | | (...) Jan-tore, my mention of computers was in direct response to the mention of the self-propelled transporters. I also would not be surprised if many modern multi-axle mobile cranes use a similar system, but I have no information on that. ROSCO (20 years ago, 3-Mar-05, to lugnet.technic)
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| | | | | | Re: Crane Steering —Jennifer Clark
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| | | | (...) I have had a demonstration of the 6 wheel steering on a Demag AC50-1, and while I did not see the workings in detail, it would appear that each axle could be controlled independently, switching between modes electronically. To my mind this (...) (20 years ago, 4-Mar-05, to lugnet.technic)
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