Formwork support comprising an outer support part and a telescopic inner support part, wherein the inner support part comprises a twist-proof portion and the outer support part comprises a twist-proof region with a first inner contour, wherein during telescoping of the inner support part, the twist-proof region of the outer support part cooperates with the twist-proof portion of the inner support part in such a manner that a twisting of the inner support part about its longitudinal axis with respect to the outer support part is blocked, wherein the outer support part comprises a guide region with a second inner contour which differs from the first inner contour for guiding the inner support part.

A telescopic edge protection post arrangeable between a floor and a ceiling, wherein the telescopic edge protection post comprises an outer tube having a floor end and a top end, and an inner tube having a bottom end and a ceiling end. The inner tube extends into the outer tube and is movable with respect thereto between an extended position and a collapsed position. The post further has a locking mechanism arranged to lock the inner tube with respect to the outer tube, and a tensioning device. The locking mechanism comprises a fixed element, which is attached to the outer tube at its top end, and a movable element, which is movable with respect to the fixed element between a locking position in which the movable element engages with the inner tube and the fixed element to prevent the inner tube from being retracted into the outer tube.

Formwork support comprising an outer support part and a telescopic inner support part, wherein the inner support part comprises a twist-proof portion and the outer support part comprises a twist-proof region with a first inner contour, wherein during telescoping of the inner support part, the twist-proof region of the outer support part cooperates with the twist-proof portion of the inner support part in such a manner that a twisting of the inner support part about its longitudinal axis with respect to the outer support part is blocked, wherein the outer support part comprises a guide region with a second inner contour which differs from the first inner contour for guiding the inner support part.

The disclosure relates to a telescopic support prop, which has a leg with a lower leg part and an upper leg part. The upper leg part has a plurality of vertically spaced through holes. A locking pin is releasably connected to one of the vertically spaced through holes of the upper leg part. A cap is connected to the locking pin, the cap having a fastening sleeve put over an end of the locking pin, the cap further having a spring for bearing against the exterior of the lower leg part.

The disclosure relates to a telescopic support prop, which has a leg with a lower leg part and an upper leg part. The upper leg part has a plurality of vertically spaced through holes. A locking pin is releasably connected to one of the vertically spaced through holes of the upper leg part. A cap is connected to the locking pin, the cap having a fastening sleeve put over an end of the locking pin, the cap further having a spring for bearing against the exterior of the lower leg part.

A locking mechanism for locking an inner tube with an outer tube of an adjustable telescopic push-pull prop assembly is disclosed. The locking mechanism includes a slotted prop nut having a slot and adapted to move in either direction when rotated on the outer tube having threads, a guiding ring adapted to be accommodated in the slot of the slotted prop nut, and a captive grooved pin assembly adapted to be accommodated in the guiding ring for locking and unlocking the inner tube and the outer tube such that the slotted prop nut encases the guiding ring and the captive grooved pin assembly. The positioning of the captive grooved pin assembly is such that it does not hinder the rotation of the slotted prop nut.

A universal prop system for grid shoring provides increased versatility and cost effectiveness over conventional grid shoring systems for building construction, such as concrete parking garage construction. The universal props include a variety of interchangeable prop stands, interchangeable drop heads, and interchangeable stringer jacks with a variety of different types of stringer heads. The interchangeable drop heads interconnects the interchangeable stringer jacks with the interchangeable prop stands. The interchangeable drop heads are designed to support a variety of different types of rails, such as beams, joists, rafters, pipes, etc. The interchangeable stringer jacks include a number of different stringer heads configured to support a variety of different stringers. The different stringer heads include, for example, U-heads, spindle forks and jack plates, with and without detachable threaded shafts.

A multi-stiffener for civil engineering and construction includes an outer pipe member, an inner pipe member, an inner pipe position adjusting pin and a positioning member. The outer pipe member includes an outer pipe strut plate provided at one end of the outer pipe member, a pair of slot-shaped symmetrical guide holes extending in a longitudinal direction from a position spaced apart by a predetermined distance from an open end of the outer pipe member, and a height-adjustment-purpose external thread formed around the guide holes. The inner pipe member includes an inner pipe strut plate provided at one end of the inner pipe member and a plurality of symmetrical through-holes formed at specific intervals from the inner pipe strut plate. The inner pipe position adjusting pin is configured to penetrate the guide holes of the outer pipe member and the through-holes of the inner pipe member.

A multi-stiffener for civil engineering and construction includes an outer pipe member, an inner pipe member, an inner pipe position adjusting pin and a positioning member. The outer pipe member includes an outer pipe strut plate provided at one end of the outer pipe member, a pair of slot-shaped symmetrical guide holes extending in a longitudinal direction from a position spaced apart by a predetermined distance from an open end of the outer pipe member, and a height-adjustment-purpose external thread formed around the guide holes. The inner pipe member includes an inner pipe strut plate provided at one end of the inner pipe member and a plurality of symmetrical through-holes formed at specific intervals from the inner pipe strut plate. The inner pipe position adjusting pin is configured to penetrate the guide holes of the outer pipe member and the through-holes of the inner pipe member.

A method and a device for producing an outer pipe of a telescope-like support, for reasons of weight and stability, is produced from a standardized zinc-coated steel pipe having a large outer diameter and a small wall thickness. Also included is the telescope-like support and the outer pipe which is contained therein. A pipe portion of the outer pipe is expanded in the method with a punch and subsequently tapered to the original outer diameter again with a ring. A reinforcement of the pipe portion and a calibration of the outer diameter of the pipe portion are thereby achieved. An outer thread can be rolled on the pipe portion.