US 12,358,768 B2
Load-compensating device for a lifting application with an object to be lifted or lowered
Steven Walther, Saalfeld (DE)
Assigned to Siemens Aktiengesellschaft, Munich (DE)
Appl. No. 18/848,980
Filed by Siemens Aktiengesellschaft, Munich (DE)
PCT Filed Feb. 22, 2023, PCT No. PCT/EP2023/054424
§ 371(c)(1), (2) Date Sep. 20, 2024,
PCT Pub. No. WO2023/180002, PCT Pub. Date Sep. 28, 2023.
Claims priority of application No. 22163264 (EP), filed on Mar. 21, 2022.
Prior Publication US 2025/0109001 A1, Apr. 3, 2025
Int. Cl. B66F 7/06 (2006.01)
CPC B66F 7/065 (2013.01) [B66F 7/0633 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A load-compensating device for a lifting application with an object to be lifted or lowered, comprising:
a movable platform which carries the object, the platform being supported by at least one spring element to compensate for loads;
wherein the spring element acts on a spreading unit which, in order to achieve spreading, transfers a spring force of the spring element into a scissors arrangement;
wherein, by virtue of the scissors arrangement, the spring force acts as a resultant lifting force, exerting a lifting action on the platform;
wherein a substantially constant lifting force is provided over a substantial lifting distance of the platform by lifting geometry formed via the spreading unit and the scissors arrangement; and
wherein the spring element is configured as at least two tension springs acting in parallel, which remain substantially horizontal and parallel to the moveable platform during operation, and is prestressed with a spring prestress at a level such that the spring element is formed as a block in an upper lifting position.