Bridge bottom inspection apparatus
First Claim
1. An improved bridge bottom inspection apparatus with an operating chassis which stands on the bridge and which is movable adjacent a barrier along the edge of the bridge, with a raisable and lowerable lift tower which is operatively retained and supported by the chassis and which extends downwards past the edge of the bridge, and with a work platform which is attached to the lift tower and which is cantilevered beneath the bridge, wherein the improvement comprises:
- a guide tower (8) which is operatively supported by the chassis (1) and which is located on the inside of the edge barrier (34) of the bridge (32); and
support means, overhanging the edge barrier, said support means having cantilevered members with free ends and cradle means at the free ends to releasably mount said lift tower (6) on the guide tower, the support means being movable upward and downward on the guide tower.
2 Assignments
0 Petitions
Accused Products
Abstract
The invention relates to a bridge bottom inspection apparatus which includes an operating chassis movable along the edge of the bridge. A lift tower (6) is raisably and lowerably supported by chassis and can extended downwards past the edge of the bridge. A work platform (5 ) is attached to the lift tower and can be cantilevered beneath the bridge. In order to permit the apparatus to be erected simply, to reduce its overall weight and therefore the load upon the bridge, and to overcome high sound insulation walls located in the guard rail region, the operating chassis has a guide tower (8) located on the bridge, on which the lift tower (6) is guided for up and down movement by means of cantilevered support elements (10). The operating chassis may be a rail or transport vehicle (1). The guide tower (8) is mounted on a turntable (3) of the vehicle pivotably about a horizontal axis (9). Particular further developments of the bridge bottom inspection apparatus described serve to permit it to be moved past masts arranged at the edge of the bridge in such a manner that the lift tower (6) and the work platform (5) can remain in their work position.
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Citations
18 Claims
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1. An improved bridge bottom inspection apparatus with an operating chassis which stands on the bridge and which is movable adjacent a barrier along the edge of the bridge, with a raisable and lowerable lift tower which is operatively retained and supported by the chassis and which extends downwards past the edge of the bridge, and with a work platform which is attached to the lift tower and which is cantilevered beneath the bridge, wherein the improvement comprises:
- a guide tower (8) which is operatively supported by the chassis (1) and which is located on the inside of the edge barrier (34) of the bridge (32); and
support means, overhanging the edge barrier, said support means having cantilevered members with free ends and cradle means at the free ends to releasably mount said lift tower (6) on the guide tower, the support means being movable upward and downward on the guide tower. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
- a guide tower (8) which is operatively supported by the chassis (1) and which is located on the inside of the edge barrier (34) of the bridge (32); and
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10. An improved bridge bottom inspection apparatus with an operating chassis which stands on the bridge and which is movable along the edge of the bridge, with a beam which is operatively retained and supported by the chassis and which extends downwards past the edge of the bridge, and with a work platform which is attached to the beam and which is cantilevered beneath the bridge, wherein the improvement comprises:
- a plurality of support elements disposed at spaced apart positions to operatively connect the beam to the operating chassis, the support elements being selectively and individually separable from the beam and retractable to the operating chassis, and a safety control device which selectively prevents all the support elements from simultaneously being separated from the beam.
- View Dependent Claims (11)
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12. An apparatus for inspecting the bottom of a bridge having an edge and an upwardly extending barrier adjacent the edge, comprising:
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a chassis which is movable along the edge of the bridge; a turntable provided on the chassis so as to be rotatable about a vertical axis; a guide tower having first and second ends, the first end of the guide tower being articulatedly connected to the turntable for pivoting movement about a horizontal axis, the guide tower having an operating position wherein it is disposed inward of the barrier and wherein its second end is elevated higher than its first end; a lifting tower having a predetermined length; means for mounting the lifting tower on the guide tower, the means projecting outward of the barrier when the guide tower is in its operating position and including cantilevered members with free ends having cradle means for releasably supporting the lifting tower so that the lifting tower extends downwardly beyond the edge of the bridge and is movable up and down the guide tower; and a working platform mounted on the lifting tower to cantilever beneath the bridge. - View Dependent Claims (13, 15, 16, 17, 18)
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14. cantilevered members being rigid support arms attached to the slide stage as first support elements for the lift tower, and further comprising two pivot arms which are mounted on the turntable and which are pivotable about vertical axes as second support elements for the lift tower, wherein the first support elements are selectively vertically engageable with and disengageable from the lift tower and the second support elements are also selectively vertically engageable with and disengageable from the lift tower.
Specification