An insert for lifting and leveling a precast concrete slab is provided. The insert includes a sleeve that extends through the concrete slab and has two distinct threaded portions on an inner surface of the sleeve. This configuration allows a lifting bolt to be positioned into an upper end of the sleeve to lift the concrete slab, and a different-sized leveling bolt to be positioned in the sleeve to selectively elevate or raise part of the concrete slab relative to a ground surface.

An arrangement with a lock and an anchor for forming a lifting connection for lifting a load. The anchor has a pin connectable to the load, and an anchor head that adjoins the pin and projects beyond the pin transversely to its longitudinal extension. The lock has an elongated hole with an insertion section and a holding section adjoining the insertion section and differing in its clear width from the insertion section. The elongated hole has a cross section in its insertion section such that the anchor head, in an insertion position, can be guided through this cross section, and the anchor inserted into the insertion section is rotatable around the longitudinal axis of the pin. The anchor head cannot be guided out of the insertion section in a locking position which is rotated by a certain angular amount around the longitudinal axis of the pin relative to the insertion position. The anchor is only displaceable in its locking position in the holding section and, when inserted therein, cannot be rotated around the longitudinal axis of the pin by the angular amount back into the insertion position.

Anchors, clutches, and lifting systems are described herein that increase the size of a shear cone within a precast concrete panel without using multiple clutches and without increasing the complexity of the lift system. A shear cone is the volume within the panel that the anchor and clutch pull on when orienting and positioning the precast concrete panel. Anchors described herein encompass a larger volume of the panel in different ways to produce a larger shear cone. Similarly, the clutches described herein have features that allow a clutch to accommodate the improved anchors. As a result, the anchors, clutches, and lifting systems provide a larger shear cone in the panel to increase the load capacity of the lifting system and reduce the likelihood of failure.

An insert for lifting and leveling a precast concrete slab is provided. The insert includes a sleeve that extends through the concrete slab and has two distinct threaded portions on an inner surface of the sleeve. This configuration allows a lifting bolt to be positioned into an upper end of the sleeve to lift the concrete slab, and a different-sized leveling bolt to be positioned in the sleeve to selectively elevate or raise part of the concrete slab relative to a ground surface.

The invention relates to a scissor-type securing element (1) comprising two hooks (2, 3) pivotably connected together by a rotary shaft (4), a distal part being defined in each hook (2, 3) on one side of the shaft (4) and a proximal part being defined on the other side of the shaft (4), each distal part being provided with a tooth (21, 31) and each proximal part being provided with a penetrating slot (22, 32). According to the invention, the securing element has an insertion configuration (P1) in which the hooks (2, 3) are superposed, and a securing configuration (P2) in which the teeth (21, 31) are in a more separated position and the hooks (2, 3) project so as to remain retained in an inner support surface (51) of a case (5). The securing element (1) comprises a shackle (6) provided with: a ring (61) for supporting the load, two ring ends (62, 63) and a key (64) supported by the two ends (62, 63) and inserted into the slots (22, 32), the ends (41, 42) of the shaft (4) projecting laterally and the ring ends (62, 63) being provided with a housing (65) having a form complementary to the ends (41, 42) of the shaft (4), such that in the insertion configuration, each end (41, 42) of the shaft (4) is inserted into a housing (65).

The disclosure relates to a formwork device for manufacturing a construction element, in particular a plate-shaped precast concrete element, said formwork device comprising a formwork element and a transport anchor for positioning within the construction element, the transport anchor having a connecting part for connecting a lifting device and a shear force part for introducing a shear force into the construction element, the transport anchor having a first connecting element for connecting the transport anchor to the formwork element and/or a second connecting element for connecting the transport anchor to a support element for supporting the construction element.

Aspects of the present disclosure related to lifting apparatuses and methods for attaching and lifting a load, including for example a lifting apparatus that includes an outer sleeve with first and second openings, an inner unit that has a chamber, a first shear pin, a second shear pin, and an actuation device along with a bar that is positioned within and movable within a track. The bar may also include a projection sized and shaped to engage with a guide in a surface of the outer sleeve. In an unlocked position the first and second shear pins may be disengaged from the first and second openings in the outer sleeve such that the outer sleeve may move relative to the inner unit.

A lifting insert, particularly for embedment in the edges of thin concrete elements is disclosed. The insert has a head at one end which has a through aperture for the connection of a co-operating lifting link and another end for embedment within the concrete. The head of the insert has an interior region bounded on each side by an exterior region which extends to the longitudinal edges of the insert. The exterior region is thicker than the interior region and the boundary between the two regions defines an abutment surface. The thickness and width of the interior region is dimensioned to allow the lifting link to be connected to the head of the insert and the thickness of the outer region is dimensioned so as to restrict the rotation of the lifting link when a load is applied normal to the axis of the insert, and to effectively transfer the load by a couple developed across the full cross-section of the insert e.g. when tilting the concrete element from a horizontal position to a vertical position.

A universal slab removal device for picking up and moving large slabs of cement, concrete or any other types of heavy solid material using any type of lifting machine. The universal slab removal device includes an anchor assembly including an elongated anchor member adapted to be fastened to a slab of heavy solid material such as cement, pavement, and stone and be lifted with a lifting apparatus such as a fork lift and the like.

A lifting and jacking apparatus including a void former configured for embedment in a concrete slab before pouring of the concrete slab and a lifting bail removably insertable in and securely attachable to the void former. The void former includes a built in jacking screw configured to assist in adjusting the height of the concrete slab.