The present disclosure concerns a crane, in particular a tower crane, telescopic boom crane, harbor crane and the like, with a load hook that can be raised or lowered via movable crane elements, and moved within a crane working area by operating drive units associated with the crane elements. The crane is provided with a control unit with input means to control the drive units. According to the present disclosure, the crane uses a mobile portable target signal transmitter that can be variably positioned in the crane working area, and positioning means for automatically determining the current position of the target signal transmitter relative to the load hook and/or a crane element, and target control means for automatically controlling the drive units in response to a signal from the positioning means, such that the load hook is automatically moved to the mobile target signal transmitter.

A system includes a hoist drive mechanism that elevates and lowers a load hook from a boom and a detector that provides obstacle location and identification information. A processor receives the obstacle location and identification information from the detector and provides obstacle avoidance data in response thereto.

A radio controller includes a sensor to detect orientation of the transmitter. The orientation is used in combination with a command from the joystick to control operation of the bridge and/or trolley of a material handling system. In a first operating mode, rotational orientation is divided into two intervals. When the transmitter is facing a first direction, pressing forward causes the commanded axis to travel forward. When the transmitter is facing opposite the first direction, pressing forward causes the commanded axis to travel reverse. In a second operating mode, rotational orientation is divided into four intervals. A forward motion will control either the trolley or bridge in the direction of the joystick as a function of the transmitter orientation. In a third operating mode, displacement of the joystick will cause a vector command for the material handling system in the direction the joystick is pressed.

A management system includes: a plurality of machine tools each including a base plate; a plurality of storage plates; an object holder enabling an object to be placed thereon; a conveying unit including a fetching unit that is configured to secure or release said object holder, and a bridge crane that is configured to move the fetching unit among the base plates and the storage plates; and a control unit controlling the bridge crane to move the fetching unit to where the object holder is located, and controlling the fetching unit to secure the object holder, and controlling the bridge crane to move the fetching unit along with the object holder to another location to release the object holder.

This crane has a turning body that supports a boom, the crane including: a travel body that has a frame for supporting a front-side axle and a rear-side axle; and a motor that is disposed below the frame and between the front-side axle and the rear-side axle, the motor being connected to the front-side axle and the rear-side axle.

A crane for transporting a load from a transportation origin to a transportation destination, the crane being provided with: an operation function unit provided so as to be turnable; a hook suspended by a wire rope from a distal end part of the operation function unit; an information-reading unit provided to the hook or a member that moves with the hook, the information-reading unit acquiring information relating to a position of the transportation destination from an information storage unit provided to the load; a control unit for calculating, on the basis of the information relating to the position acquired from the information-reading unit, information relating to an operation of the crane for transporting the load to the transportation destination; and a display unit for displaying the information relating to the position and the information relating to the operation.

Disclosed are a crane and a control method therefor. The crane comprises a body, a boom, a luffing mechanism, a tension sensor, and a controller. One end of the boom is rotatably connected with the body. The luffing mechanism is respectively connected to the body and the boom. The tension sensor is disposed on the luffing mechanism, and the tension sensor is used for detecting a tension value of the luffing mechanism to the boom. The controller is electrically connected to the tension sensor and the luffing mechanism, and the controller is configured to determine that the arm length of the boom exceeds an arm length threshold if the tension value is greater than a tension threshold.

A lift device includes a chassis, an implement assembly including an implement actuator, and a lift assembly coupling the implement assembly to the chassis and configured to raise the implement assembly relative to the chassis. The lift device further includes at least one of a gyroscope assembly, a hydraulic stabilization system, or a first boom portion and a second boom portion. Rotation of a flywheel causes the gyroscope assembly to apply a force to the implement assembly to oppose movement of the implement assembly. Responsive to movement of the implement assembly when a valve is in a closed position, fluid flowing between the implement actuator and a fluid source is directed through an orifice via a second supply line, thereby restricting the flow of fluid and dampening the movement of the implement assembly.