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 anchor comprises a conduit for receiving a flexible elongate member therethrough. The conduit has an internal region and first and second openings. The flexible elongate member can extend through the first and second openings and through the internal region of the conduit. The conduit is a curved, substantially U-shaped elongate tubular member.

A prefabricated wall for a prefabricated building includes a concrete body and a rigid framework arranged inside the poured concrete body, the rigid framework comprises n longitudinally extending vertical rebars, with n being an integer greater than or equal to three; an upper end face and a lower end face of the prefabricated wall are formed with m mechanical connection portions at positions sharing the same axes as the vertical rebars, with m being an integer less than or equal to 2n; and the mechanical connection portions are all formed at end portions of the vertical rebars. An assembly structure for a prefabricated building is further provided. The assembly structure is formed by filling an assembly gap with an on-site poured layer after rebars are firmly connected at an overhead region between an upper-layer wall, a lower-layer wall and a floor slab by means of fastening components.

A prefabricated wall for a prefabricated building includes a concrete body and a rigid framework arranged inside the poured concrete body, the rigid framework comprises n longitudinally extending vertical rebars, with n being an integer greater than or equal to three; an upper end face and a lower end face of the prefabricated wall are formed with m mechanical connection portions at positions sharing the same axes as the vertical rebars, with m being an integer less than or equal to 2n; and the mechanical connection portions are all formed at end portions of the vertical rebars. An assembly structure for a prefabricated building is further provided. The assembly structure is formed by filling an assembly gap with an on-site poured layer after rebars are firmly connected at an overhead region between an upper-layer wall, a lower-layer wall and a floor slab by means of fastening components.

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.

A construction anchor apparatus includes a main module having first and second wall segments and defining a central longitudinal axis, a first movable support operatively coupled to the first wall segment of the main module and having a first tube segment defining an opening therethrough and a second movable support operatively coupled to the second wall segment of the main module and defining an opening configured for reception of the first tube segment of the first movable support to couple the first and second movable supports. Each of the first and second movable supports configured for longitudinal movement relative to respective first and second wall segments of the main module.

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.

A construction anchor apparatus includes a main module having first and second wall segments and defining a central longitudinal axis, a first movable support operatively coupled to the first wall segment of the main module and having a first tube segment defining an opening therethrough and a second movable support operatively coupled to the second wall segment of the main module and defining an opening configured for reception of the first tube segment of the first movable support to couple the first and second movable supports. Each of the first and second movable supports configured for longitudinal movement relative to respective first and second wall segments of the main module.

A construction anchor apparatus has utility as a safety grip for engagement by construction personnel, and, in addition, a support apparatus for supporting and/or holding construction equipment including ductwork, electrical cables, plumbing, etc. The anchor apparatus is used in conjunction with rebar applied in concrete support walls, floors, ceilings, or other structural elements at a construction site.

A construction anchor apparatus has utility as a safety grip for engagement by construction personnel, and, in addition, a support apparatus for supporting and/or holding construction equipment including ductwork, electrical cables, plumbing, etc. The anchor apparatus is used in conjunction with rebar applied in concrete support walls, floors, ceilings, or other structural elements at a construction site.