Weighing scales – Structural installation – Geographic
Patent
1981-06-15
1983-07-12
Miller, Jr., George H.
Weighing scales
Structural installation
Geographic
177135, G01G 1902
Patent
active
043925375
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a weighbridge, at least partially consisting of cast concrete parts, and a method of producing the weighbridge.
It is already known to manufacture weighbridges from cast concrete or as all-welded steel constructions. The cast weighbridges, which are cast, for example, directly in a weighing pit, therefore require a special mould dimensioned to take up the whole weight of the weighbridge. It is often necessary to carry out a stamping of the mould which is particularly difficult in view of the fact that the weighbridge is cast in a special weighing pit which is not wanted too deep for reasons of cost, which means that the space below the weighbridge is limited. After the setting of the concrete, the mould has to be broken up and removed through a manhole in the weighbridge, which work is time-consuming and therefore expensive. A further expense in connection with casting known weighbridges is that they have to be made with special beam sections adapted to bear against transmitter members.
The use of weighbridges consisting of all-welded steel constructions eliminates many of the disadvantages associated with the casting of weighbridges. For various reasons, a welded weighbridge has to be made with great accuracy which means that it is extremely inconvenient to weld the weighbridge together on site in the weighing pit. A finished weighbridge may have dimensions of 3.times.18 m, which means that special arrangements have to be made for such a weighbridge to be able to be transported from the place of manufacture. An all-welded weighbridge is nevertheless preferable since its lower weight in comparison with the weight of a cast weighbridge leads to more accurate weighing.
The present invention provides a weighbridge and a method of producing it which to a large extent eliminates the problems and disadvantages which exist with known weighbridges. A weighbridge according to the present invention has several of the advantages of a welded weighbridge but none of the disadvantages which are associated with the production of known cast weighbridges. Thus, the object of the present invention is to provide a weighbridge which can easily be produced directly in a weighing pit, which has considerably lower weight in comparison with known cast weighbridges and which, in addition, is cheaper to produce than known weighbridges.
The objects given above are achieved according to the present invention by giving the weighbridge and the method for its production the characteristics given in the patent claims.
By casting the weighbride directly on a mould, preferably of metal, which mould does not need to be removed after the setting of the concrete and which rests directly against two beams disposed along the long sides of the weighing pit and supported by the transmitter members, a comparatively light weighbridge with the necessary strength is obtained. Transverse beams between the longitudinal beams are preferably bolted to these and at the same time constitute a support for or part of the mould. The mould is bounded by an edge lining which bears with a sealing action against the tops of the beams. The edge lining only needs to be dimensioned to take up the stresses which occur during the casting of the concrete in the mould.
A preferably corrugated or profiled metal sheet is disposed on the beams with a sealing action against the tops of the beams. A plane-profiled metal sheet is preferred since this permits the placing of reinforcing iron in each profiling, while at the same time the volume of concrete can be reduced without detriment to the necessary strength of the weighbridge.
As a result of the fact that the edge lining is bounded at the top by a T-beam, to the web of which there is secured a metal sheet disposed close to the tops of the beams, objects are effectively prevented from becoming wedged between the edge of the weighbridge and the surrounding edges of the weighing pit, adjacent to the weighbridge. An edge lining thus shaped also permits an easy joining at the corner portions of
REFERENCES:
patent: 3442343 (1969-05-01), Marion
patent: 3770068 (1973-11-01), Ahl
AB Bofors Elektronik
Lewis Jon M.
Miller Jr. George H.
LandOfFree
Weighbridge and method of producing it does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Weighbridge and method of producing it, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Weighbridge and method of producing it will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-193963