A hoist system having a drum primarily self-contained within a batten, for raising and lowering lighting, sound equipment, curtains and the like in a performance environment. The hoist system may be adapted with safety mechanisms including an overload sensor and/or a slack line detector. The system may be provided in the form of a point hoist. The compact system is highly scalable to a variety of spaces and applications, including school and public theaters and concert halls, as well as some homes, private business, etc. Additional features include various cable management systems and trim adjustment mechanisms for use with the hoist system.

A hoist system having a drum primarily self-contained within a batten, for raising and lowering lighting, sound equipment, curtains and the like in a performance environment. The hoist system may be adapted with safety mechanisms including an overload sensor and/or a slack line detector. The system may be provided in the form of a point hoist. The compact system is highly scalable to a variety of spaces and applications, including school and public theaters and concert halls, as well as some homes, private business, etc. Additional features include various cable management systems and trim adjustment mechanisms for use with the hoist system.

A system for transferring objects into a device inside a controlled environment includes a winch, tool and carousel. The winch includes a drum, and wire arrangement configured to be reversibly wound onto the drum by a first drive. The tool is suspended below a distal end of the wire arrangement and configured to suspend an object. Both the tool and the object are sized to fit inside a device located below the winch. The carousel is connected to a second drive configured to rotate the carousel around a vertical axis, and includes a storage space centered at a first horizontal angle and a pass-through opening at a different second horizontal angle. The pass¬through opening being large enough to pass the tool and the object as the wire arrangement is unwound from the drum thereby lowering the tool and object inside the device.

A lifting cabinet has left and right lifting mechanisms each comprising a steel cable; a power mechanism which is connected with a first end of the steel cable; an internal guide rail which is connected with a second end of the steel cable; and an external guide rail which is fixed on a frame of the lifting cabinet and is configured with an accommodation space therein. The internal guide rail is located within the accommodation space. The lifting cabinet solves the problem of exposure of the steel cable.

A lifting cabinet has left and right lifting mechanisms each comprising a steel cable; a power mechanism which is connected with a first end of the steel cable; an internal guide rail which is connected with a second end of the steel cable; and an external guide rail which is fixed on a frame of the lifting cabinet and is configured with an accommodation space therein. The internal guide rail is located within the accommodation space. The lifting cabinet solves the problem of exposure of the steel cable.

A cable steering system directs steel cables, for lifting cabinet shelf. The cable steering system includes left and right devices each comprising a first transmission wheel for horizontally turning the cable, and a second transmission wheel for vertically turning the cable which extends out from the first transmission wheel; and the cable extending out from the second transmission wheel is located in the middle of a side edge of the cabinet body. With the steel cable steering devices of the lifting cabinet, each steel cable extends horizontally along the first transmission wheel, and then is directed vertically downwardly by the second transmission wheel, thereby the cable is connected to a middle part of a side edge of the lifting shelf, so that the lifting shelf bears a balanced force.

A cable steering system directs steel cables, for lifting cabinet shelf. The cable steering system includes left and right devices each comprising a first transmission wheel for horizontally turning the cable, and a second transmission wheel for vertically turning the cable which extends out from the first transmission wheel; and the cable extending out from the second transmission wheel is located in the middle of a side edge of the cabinet body. With the steel cable steering devices of the lifting cabinet, each steel cable extends horizontally along the first transmission wheel, and then is directed vertically downwardly by the second transmission wheel, thereby the cable is connected to a middle part of a side edge of the lifting shelf, so that the lifting shelf bears a balanced force.

A double-drum linkage winding type hoisting system includes a first hoisting drum and a second hoisting drum. The first hoisting drum and the second hoisting drum are engaged and linked through engagement structures on outer circumferences of the first hoisting drum and the second hoisting drum or are linked through a linkage intermediate member. A first hoisting rope is wound around the first hoisting drum. A second hoisting rope is wound around the second hoisting drum. The first hoisting rope and the second hoisting rope are not connected with each other.

A double-drum linkage winding type hoisting system includes a first hoisting drum and a second hoisting drum. The first hoisting drum and the second hoisting drum are engaged and linked through engagement structures on outer circumferences of the first hoisting drum and the second hoisting drum or are linked through a linkage intermediate member. A first hoisting rope is wound around the first hoisting drum. A second hoisting rope is wound around the second hoisting drum. The first hoisting rope and the second hoisting rope are not connected with each other.

A modular lift system may include, but is not limited to: one or more lift segments each including: a lift-truss structure; and a drive shaft having at least one end-coupler, at least one lift assembly coupled to the lift-truss structure, and at least one drive segment including: a drive-truss structure; a drive motor coupled to the drive-truss structure; and a drive-coupler attached to the drive motor and configured to engage the end-coupler of the drive shaft.