A method for operating a conveying system is provided. An overhead hoist transport (OHT) vehicle is provided, wherein the OHT vehicle includes a gripping member configured to grip and hold a carrier, and a receiver configured to receive a signal. The signal is transmitted to the receiver of the OHT vehicle. The OHT vehicle is moved toward the carrier, and the carrier is gripped by the gripping member of the OHT vehicle. A lifting force is determined based on a weight of a carrier, a number of workpieces in the carrier, or a vertical distance between the OHT vehicle and the carrier, and the lifting force is applied to the carrier.

A method for operating a conveying system is provided. An overhead hoist transport (OHT) vehicle is provided, wherein the OHT vehicle includes a gripping member configured to grip and hold a carrier, and a receiver configured to receive a signal. The signal is transmitted to the receiver of the OHT vehicle. The OHT vehicle is moved toward the carrier, and the carrier is gripped by the gripping member of the OHT vehicle. A lifting force is determined based on a weight of a carrier, a number of workpieces in the carrier, or a vertical distance between the OHT vehicle and the carrier, and the lifting force is applied to the carrier.

A multi-axis gantry system comprising a multi-axis gantry apparatus and vacuum system, and method for repositioning is disclosed. The multi-axis gantry system comprises a frame. The frame includes a plurality of curved base members, a first rail, a second rail, a bridge slidably moveable along the first rail and the second rail, a carriage including an end effector, and a first plurality of pucks and a second plurality of pucks. The vacuum system comprises a vacuum controller, a first vacuum source and a second vacuum source. Each of the first and second vacuum sources is in fluid communication with one or more pucks of the first and second pluralities of pucks. The frame is reconfigurable from a first configuration mountable on a first work surface to a second configuration mountable on a second work surface that may be different from the first work surface.

A method for moving a load with a crane in a collision-free manner in a space having at least one obstacle includes providing a position of the obstacle, providing at least one safe state variable of the load, determining from the safe state variable a safety zone surrounding the load, and dynamically monitoring the safety zone in relation to the position of the obstacle.

An article transport vehicle includes a travel body; a holding device that holds an article; and a lift device that is on the travel body, and that raises and lowers the holding device with respect to the travel body. The holding device includes: a connection portion connected to the lift device and an article support portion that supports the article; an elastic support mechanism that is between the article support portion and the connection portion, and that supports the article support portion against the connection portion while being elastic in a vertical direction, and a guide mechanism that guides the article support portion in the vertical direction with respect to the connection portion. The guide mechanism allows the article support portion to move parallel with the vertical direction with respect to the connection portion and restricts swinging of the article support portion with respect to the connection portion.

A storage system includes an overhead stocker having a first overhead track, a rack including a plurality of storages arranged vertically, and a crane that travels along the first overhead track and delivers and receives an article to and from the storages; and an overhead transport vehicle system having a second overhead track provided below a lower end of the overhead stocker, and an overhead transport vehicle that travels along the second overhead track and delivers and receives an article to and from a predetermined transfer destination, wherein the first overhead track has an elevating track capable of supporting and lowering the crane that is stopped traveling at a portion deviated from the second overhead track in planar view.

A storage system includes an overhead stocker having a first overhead track, a rack including a plurality of storages arranged vertically, and a crane that travels along the first overhead track and delivers and receives an article to and from the storages; and an overhead transport vehicle system having a second overhead track provided below a lower end of the overhead stocker, and an overhead transport vehicle that travels along the second overhead track and delivers and receives an article to and from a predetermined transfer destination, wherein the first overhead track has an elevating track capable of supporting and lowering the crane that is stopped traveling at a portion deviated from the second overhead track in planar view.

A dual hoist crane is provided with a heave compensation system that can be used for both the main and for the auxiliary hoisting assembly. The heave compensation system includes a first set of sheaves for guiding the main hoisting cable and a second set of sheaves for guiding the auxiliary hoisting cable. The heave compensation system is configured to individually lock the first set of sheaves and the second set of sheaves to a heave compensation cylinder, for respectively providing the main hoisting assembly and the auxiliary hoisting assembly with heave compensation.

A dual hoist crane is provided with a heave compensation system that can be used for both the main and for the auxiliary hoisting assembly. The heave compensation system includes a first set of sheaves for guiding the main hoisting cable and a second set of sheaves for guiding the auxiliary hoisting cable. The heave compensation system is configured to individually lock the first set of sheaves and the second set of sheaves to a heave compensation cylinder, for respectively providing the main hoisting assembly and the auxiliary hoisting assembly with heave compensation.

The present invention relates to a container transportation ship. More particularly, the present invention relates to a container transportation ship for transporting containers, characterized in that a loading space in which at least one container is loaded and a loading/unloading space configured such that an external transfer means can directly enter/exit in order to load and unload the container, are delimited on the deck of the container transportation ship; and a crane is provided to move the container in the longitudinal direction of the container transportation ship, in the transverse direction thereof, and in the upward/downward direction thereof for the purpose of loading the container on the external transfer means that has entered the loading/unloading space or unloading the container from the external transfer means.