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| TMD-damped stay cable and method and TMD |
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| Active vibration isolation system having pressure control |
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| Flexible manufacturing systems apparatus and methods |
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| Adjustable drop ceiling fixture support |
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Bogie
| Details |
Inventors: Horowitz, Alexandre;
Assignee: Varitrac AG (Zug, CH)
Primary Examiner: Paperner; L. J.
Assistant Examiner: Williams; Lawrence E.
Attorney, Agent or Firm: Blanchard, Flynn, Thiel, Boutell & Tanis
A wheel-bogie for supporting a crane, said bogie comprising a load-carrying foot, a main frame, at least two intermediate frames and a number of wheel frames; the transfer of the load from the foot to the main frame and from said frame to the intermediate frames and then to the wheel frames is effected by means of line contact occuring between two cooperating cylindrical planes with different radii of curvature. |
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DETAILED DESCRIPTION What is claimed is: 1.
In a bogie for supporting and guiding a heavy load movable on rails, such as a crane, which bogie includes a number of wheels cooperating in pairs and which are mounted in a wheel frame, and a load supporting foot, and at least one further frame including at least a main frame, for supporting the load in uniformly divided fashion on said wheel frames, the improvement comprising means for transmitting the load through the supporting foot to the main frame and from there to the wheel frames, said transmitting means including a pair of cylindric surfaces of different radius of curvature engaging in line contact, such that the first cylindric surface supports the second cylindric surface, one of said pair of cylindric surfaces being on said main frame, the other of said cylindric surfaces being on the adjacent one of a series of members in load transmitting engagement between said load and wheels, said series of members including said foot, main frame, and wheel frames.
2.
The bogie of claim 1, including, on both ends of the contact-line between each pair of cylindric surfaces, a tooth set, the pitch circle of which coincides with the corresponding cylindric surface.
3.
A bogie as defined in claim 2, in which each tooth set comprises two cooperating tooth segments, of which at least one of the two tooth segments is adjustable in a direction transverse to the contact-line.
4.
A bogie as defined in claim 3, in which the cooperating tooth segments are a single tooth in combination with a single recess.
5.
The bogie of claim 3, in which the tooth segments include means for limiting relative displacement of said pair of cylindric surfaces in the direction of the contact-line.
6.
The bogie of claim 3, in which the tooth segments include means for limiting relative displacement of said pair of cylindric surfaces in a direction perpendicular to said cylindric surfaces measured from the contact-line.
7.
The bogie of claim 1, in which the radius of curvature of one of the two cylindric surfaces is infinite
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Vibration and Earthquake Isolation 
