Level measuring device

Abstract

A level measuring device (100, 200, 300) comprising a tubular outer rod (102, 202, 302) and an inner rod (103, 203, 303) which has at least one section (132, 232, 332) arranged concentrically in the interior (102a, 202a, 302a) of the tubular outer rod (102, 202, 302), wherein the tubular outer rod (102, 202, 302) and the inner rod (103, 203, 303) are connected to one another via a fastening device (104, 204, 304), and comprising a drive and / or receiving device (107, 207, 307) with which the outer rod (102, 202, 302) and the inner rod (103, 203, 303) can be set into vibration and / or vibrations of the outer rod (102,202,302) and the inner rod (103,203,303) are detectable, characterized in that the inner rod (103,203,303) is designed in one piece and is mounted in the fastening device (104,204,304) in such a way that the length of the section (132,232,332) of the inner rod (103,203,303) is changeable.,

Claims

[1] Level measuring device (100, 200, 300) with a tubular outer rod (102, 202, 302) and an inner rod (103, 203, 303), which has at least one section (132, 232, 332) arranged concentrically in the interior (102a, 202a, 302a) of the tubular outer rod (102, 202, 302), wherein the tubular outer rod (102, 202, 302) and the inner rod (103, 203, 303) are connected to one another via a fastening device (104, 204, 304), and with a drive and / or receiving device (107, 207, 307) with which the outer rod (102, 202, 302) and the inner rod (103, 203, 303) are set in vibration displaceable and / or vibrations of the outer rod (102,202,302) and the inner rod (103,203,303) are detectable, characterized bythat the inner rod (103,203,303) is designed in one piece and is mounted in the fastening device (104,204,304) in such a way that the length of the section (132,232,332) of the inner rod (103,203,303) arranged in the interior of the (102a,202a,302a) tubular outer rod (102,202,302) is variable. [2] Level measuring device (100,300) according to claim 1, characterized by that the inner rod (103,303) is designed as a solid round rod which has a substantially constant diameter at least in its section arranged in the interior (102a, 302a) of the tubular outer rod (102,302). [3] Level measuring device (200) according to claim 1, characterized bythat the inner rod (203) is a solid round rod which, in its section arranged in the interior (202a) of the tubular outer rod (202), has, at its end facing away from the fastening device (204), a section designed as a flywheel (239) with a larger cross-section than a cross-section of a bending region (238) adjoining the flywheel (239) in the direction of the fastening device (204). [4] Level measuring device (100,200) according to one of claims 1 to 3, characterized by in that the inner rod (103,203) has an external thread in the region of the fastening device (104,204) which engages at least in sections into an internal thread arranged in the wall or on the wall of a receptacle or passage (141,241) present in the fastening device (104,204) for at least a section of the inner rod (103,203). [5] Level measuring device (300) according to one of claims 1 to 3, characterized by that the inner rod (303) is guided in the region of the fastening device (304) in a precisely fitting passage (341) through the fastening device (304) and extends as far as a yoke (380) connected to the fastening device (304), and that the inner rod (303) has an external thread in the region of the yoke (380) which engages at least in sections in an internal thread arranged in the wall or on the wall of a receptacle provided in the yoke (380) for at least one section of the inner rod (303) or passage (386) for at least one section of the inner rod (303). [6] Level measuring device (100, 200, 300) according to claim 4 or 5, characterized by that the inner rod (103,203,303) has a receptacle (135,235,335) for a tool on its end face (134,234,334) located outside the interior (102a,202a,302a) of the outer rod (102,202,302).

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