US 12,337,423 B2
Clamping device for longitudinal-seam-welded pipe elements
Martin Wozel, Pastow (DE); and Ulrich Sitz, Rostock, DE (US)
Assigned to EEW SPECIAL PIPE CONSTRUCTIONS GMBH, Rostock (DE)
Appl. No. 18/012,151
Filed by EEW SPECIAL PIPE CONSTRUCTIONS GMBH, Rostock (DE)
PCT Filed Jun. 16, 2021, PCT No. PCT/EP2021/066297
§ 371(c)(1), (2) Date Feb. 13, 2023,
PCT Pub. No. WO2021/259735, PCT Pub. Date Dec. 30, 2021.
Claims priority of application No. 20 182 571 (EP), filed on Jun. 26, 2020.
Prior Publication US 2023/0219178 A1, Jul. 13, 2023
Int. Cl. B23K 37/00 (2025.01); B21C 37/08 (2006.01); B23K 37/0535 (2025.01); B23K 103/04 (2006.01)
CPC B23K 37/0535 (2013.01) [B21C 37/08 (2013.01); B23K 2103/04 (2018.08)] 15 Claims
OG exemplary drawing
 
1. A clamping device for temporarily connecting two ends of a large-pipe element, comprising:
at least two connection devices; and
a connection rod, wherein
the connection devices are arranged at ends of the connection rod,
each connection device is a gripping device that is mounted to one of the ends of the connection rod in an articulated manner, each gripping device comprises:
a base frame;
a joint that connects the base frame and connection rod; and
at least two gripping jaws that are arranged below the joint and oppose one another such that an opening is provided between the at least two gripping jaws in an open state of the clamping device, wherein
each gripping jaw includes at least one gripping surface that bears against the large-pipe element in a closed state of the clamping device,
at least one gripping jaw includes at least one gripping element that has a mechanism for adjusting a position of the gripping element,
the gripping element includes the gripping surface, and
each gripping device is respectively oriented such that the openings of the at least two gripping jaws point in a same direction and are positioned on a same side of the connection rod to receive the large-pipe element.