US 11,807,495 B2
Measuring device for measuring an elevator shaft and use of the measuring device to measure an elevator shaft
Philipp Zimmerli, Härkingen (CH); and Raphael Bitzi, Lucerne (CH)
Assigned to INVENTIO AG, Hergiswil (CH)
Appl. No. 17/310,192
Filed by Inventio AG, Hergiswil (CH)
PCT Filed Mar. 2, 2020, PCT No. PCT/EP2020/055405
§ 371(c)(1), (2) Date Jul. 26, 2021,
PCT Pub. No. WO2020/178224, PCT Pub. Date Sep. 10, 2020.
Claims priority of application No. 19160765 (EP), filed on Mar. 5, 2019.
Prior Publication US 2022/0162040 A1, May 26, 2022
Int. Cl. B66B 19/00 (2006.01); G01B 11/14 (2006.01)
CPC B66B 19/00 (2013.01) [G01B 11/14 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A measuring device for measuring an elevator shaft, the measuring device comprising:
two elongate guide elements extending in parallel with one another vertically in the elevator shaft, each of the guide elements being fixedly attached to an upper holding point and a lower holding point in the elevator shaft and being tensioned between the upper holding point and the lower holding point;
a measuring platform positioned in the elevator shaft, the measuring platform having guide apparatuses that laterally support the measuring platform on the guide elements and guide the measuring platform parallel to the guide elements during a displacement movement of the measuring platform in a displacement direction in the elevator shaft;
a lifting apparatus installed in the elevator shaft and attached to the measuring platform, the lifting apparatus being adapted to move the measuring platform in the displacement direction during the displacement movement;
wherein the measuring platform has a distance measuring apparatus for measuring lateral distances to lateral walls of the elevator shaft; and
wherein the guide apparatuses each have at least three rollers arranged such that a first of the at least three rollers has a circumferential surface that rolls along a first surface of one of the guide elements during the displacement movement, and a second of the at least three rollers has a circumferential surface that rolls along a second surface of the one guide element, the second surface being opposite the first surface, during the displacement movement.