Claims
- 1. A method of securing equipment parts in accurate positions at predetermined locations of connection to a structure supporting a track following system of transportation, particularly a magnetic suspension railroad, comprising providing mounting bodies for the track supporting structure at locations of attachment and dimensioned for transferring to the track supporting structure forces and torques which act through a vehicle, connecting the mounting bodies at the desired attitude to the supporting structure in accordance with the layout of the track as referred to working surfaces of the parts of equipment, providing the mounting bodies after they are connected to the supporting structure with a plurality of thruholes and countersinks by drilling in a number needed for mounting the equipment part corresponding to the respective bolts and bores thereof and having the exact dimensions in all coordinates, securing equipment parts to the mounting bodies using exact dimensioned bolts received in the holes drilled therein, and laying out a plurality of the supporting structures to form a layout of the track.
- 2. A method according to claim 1, wherein the track supporting structure is constructed of steel reinforced concrete, said mounting bodies being connected to untensioned steel reinforcement of the steel reinforced concrete and backed with a filling material at side faces of the steel reinforced concrete.
- 3. A method according to claim l, wherein said track supporting structure is made of steel and wherein said mounting bodies are accessible from both sides and provided with bores and countersinks which are exact in all coordinants and including mounting the equipment parts by means of bolts, spacer bushing and nuts.
- 4. A method according to claim 2, wherein foam material is employed as the filling material.
- 5. A method according to claim 1 including drilling the thruholes and countersinks using at least one computer controlled drilling machine.
- 6. A method according to claim 5 including positioning said track supporting structure in a workshop and at an attitude which the track supporting structure will ultimately have in the layout of the track, programming the computer controlled drilling machine to place the thruholes and countersinks according to data concerning the position and orientation of the thruholes and countersinks that the thruholes and countersinks will ultimately have at the layout of the track, and moving the computer controlled drilling tools along the track supporting structure to drill the thruholes and countersinks.
- 7. A method according to claim 6 including controlling the temperature in the workshop and positioning the track supporting structure in the workshop for sufficient time so that the track supporting structure reaches a desired temperature before drilling the thruholes and countersinks.
- 8. A method according to claim 7 including controlling the humidity in the workshop and positioning the track supporting structure in the workshop for a sufficient period of time so that the humidity condition affects the track supporting structure to a known extent before drilling the thruholes and countersinks.
- 9. A method of securing equipment parts at accurate positions and at predetermined locations to track the supporting structures of a magnetic suspension railroad, comprising:
- connecting mounting bodies to each track supporting structure;
- positioning each track supporting structure in a work house having a controlled environment, the track supporting structure being positioned at a selected known attitude which corresponds to an attitude the track supporting structure will ultimately have in a layout of track;
- using a computer controlled drilling machine to drill thruholes and countersinks in the mounting bodies at selected positions corresponding to data used to control the drilling machine, the data corresponding to dimensions and positions of the thruholes and countersinks which are ultimately needed in the layout of track; and
- mounting the track supporting structure after drilling the thruholes and countersinks in the layout of track.
- 10. A method according to claim 9 including securing the equipment parts to the mounting bodies by using bolts which extend through the thruholes and countersinks while the track supporting structure is in the workshop.
- 11. A method according to claim 9 including securing the equipment parts to the track supporting structure by using bolts which extend into the thruholes and countersinks while the track supporting structure is in the layout of track.
Priority Claims (1)
| Number |
Date |
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| 34040617 |
Feb 1984 |
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CROSS REFERENCE TO RELATED APPLICATION
The present application is a continuation-in-part application of Ser. No. 698,351 filed Feb. 5, 1985 and now U.S. Pat. No. 4,620,358.
This invention relates in general to transportation systems and in particular to a new and useful method of securing equipment parts to a trackway supporting structure.
Concrete or steel track structures for track-following systems of transportation, particularly magnetic suspension railroads, comprise upright single or multiple trusses, or ground sections, with the working surfaces or parts of equipment needed for support, guidance, drive, braking, data transmission to the control station, and current transmission into the vehicle such as reaction rails, current rails, etc., being mounted on the supporting structure in exact position through adjustable screw connections or by means of securing bolts or securing lugs embedded in the concrete. From U.S. Pat. No. 4,064,808 to Nakamura et al (German No. DS 27 15 717), it is known to clamp a reaction rail in place in exact position, while using adjustable screw connections to compensate for the manufacturing tolerances of the supporting concrete structure. The accurate fixing by means of embedded securing bolts is shown in the German Periodical Glaser Annalen, 105 (1981), No. 7/8, pages 205-215. According to that disclosure, the needed positional accuracy is ensured directly at the site and on the actual track layout, after a preliminary accurate adjustment of the track equipment, by introducing mortar and thus fixing the securing bolts in place. This, however, requires a preceding accurate adjustment and holding of the track equipment in the adjusted position during the casting and until the mortar solidifies. The adjustable screw connection is also known from Glasers Annalen. In FIG. 13 on page 213 of the mentioned reference, it is shown how the longitudinal stator plates are connected to the track support, or the joint working component, through adjustable securing elements. Adjustable securing elements require a considerable amount of screw and connection elements, if the equipment parts are to be exactly positioned and firmly secured to the track structure, and the mounting costs, up to the final adjustment of the parts in positions variable by screwing, are high. The working components and equipment parts can be structurally united only in few individual instances, since frequently materials are needed for the equipment parts having coefficients of expansion different from those of steel and concrete, or the construction does not allow such a unification, for example, a laminated stator for a longitudinal stator drive fixed to the track, or a correspondingly exact fabrication of the working surface as a component of the supporting structure are not feasible technically or justifiable economically.
Starting from this prior art, the invention is directed to a method permitting the fixing of the equipment parts to the supporting structure of the trackroad in a simple way, i.e. with a small number of securing elements and adjustment devices and with a minimum of mounting costs.
Accordingly, it is an object of the invention to provide an improved method for securing equipment parts in accurate positions to a structure supporting a track following system of transportation, particularly a magnetic suspension railroad which comprises constructing a supporting structure and in accordance with the layout of the track in reference to the working surfaces of the parts of equipment, connecting mounting bodies to the supporting structure which have a plurality of thruholes and countersinks of a number needed for mounting the part of equipment corresponding to the respective bolts and bores thereof and being made to exact dimensions in all coordinates.
A further object of the invention is to provide a method of erecting a support structure which includes a trackway and a plurality of equipment parts secured to the structure which is simple in design, rugged in construction and economical to manufacture.
The various features of novelty which characterize the invention are pointed out with particularity in the claims annexed to and forming a part of this disclosure. For a better understanding of the invention, its operating advantages and specific objects attained by its uses, reference is made to the accompanying drawings and descriptive matter in which preferred embodiments of the invention are illustrated.
US Referenced Citations (7)
Non-Patent Literature Citations (1)
| Entry |
| Glaser Annalen (German Periodical) 105 (1981), No. 7/8-pp. 205-215. |
Continuation in Parts (1)
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Number |
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| Parent |
698351 |
Feb 1985 |
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Patent Grant
4698895
