A winch monitoring device that monitors a state of a drum around which a rope is wound includes a detection unit configured to acquire detection data indicating a state of a two-dimensional region in the rope wound around the drum, in which, when a portion out of the rope wound around the drum is referred to as a wound rope portion, a portion that is separated from the wound rope portion and extends outward from the drum is referred to as an unwound rope portion, and a portion having a distance from the wound rope portion within a diameter of the rope out of the unwound rope portion is referred to as an unwound rope root portion, the two-dimensional region is set to a region not including a portion excluding the unwound rope root portion from the unwound rope portion.

A rotorcraft includes a fuselage, a flight control computer, an auxiliary flight controller having one or more flight control inputs in the noncockpit section of the fuselage and a relay interposed between the flight control computer and the auxiliary flight controller such that the auxiliary flight controller is in data communication with the flight control computer via the relay. The relay prevents electromagnetic interference affecting the auxiliary flight controller from affecting the flight control computer.

A tracked vehicle for preparing ski slopes has a chassis extending along a longitudinal axis; a winch mounted on the chassis; a boom pivoting about a pivot axis to guide and orientate the cable of the winch between the chassis and the cable anchor point; an actuation system for rotating the boom about the pivot axis relative to the chassis in a first and second direction; and a user interface comprising a first and a second switch arranged in front of an operator and to the right and left of each other and configured to rotate the boom so as to steer the tracked vehicle to the right and to the left respectively when the cable is anchored to the cable anchor point.

A tracked vehicle for preparing ski slopes has a chassis extending along a longitudinal axis; a winch mounted on the chassis; a boom pivoting about a pivot axis to guide and orientate the cable of the winch between the chassis and the cable anchor point; an actuation system for rotating the boom about the pivot axis relative to the chassis in a first and second direction; and a user interface comprising a first and a second switch arranged in front of an operator and to the right and left of each other and configured to rotate the boom so as to steer the tracked vehicle to the right and to the left respectively when the cable is anchored to the cable anchor point.

A winch drum monitoring device that monitors a state of a winch drum includes: a phase detector configured to detect a phase of the winch drum; and a distance detector configured to detect a distance to the winch drum or a distance to a wire rope wound around the winch drum.

A winch drum monitoring device that monitors a state of a winch drum includes: a phase detector configured to detect a phase of the winch drum; and a distance detector configured to detect a distance to the winch drum or a distance to a wire rope wound around the winch drum.

The present application relates to a stopping method and apparatus for a device with a hoisting mechanism and a crane. The method includes: generating a displacement change rate according to position offset information of a hoisting handle of the device when the position offset information meets a triggering condition; comparing the displacement change rate with a preset threshold to generate a stopping control instruction; and controlling an overhead system of the device to perform deceleration stopping according to the stopping control instruction. The stopping method and apparatus for the device with the hoisting mechanism, the crane, the electronic device and the computer readable medium involved in the present application may achieve the purpose of rapid stopping control only through the hoisting handle of the device, and reduce the requirement for the driver's reaction time and increase the safety of the device when emergency stopping is required.

The present application relates to a stopping method and apparatus for a device with a hoisting mechanism and a crane. The method includes: generating a displacement change rate according to position offset information of a hoisting handle of the device when the position offset information meets a triggering condition; comparing the displacement change rate with a preset threshold to generate a stopping control instruction; and controlling an overhead system of the device to perform deceleration stopping according to the stopping control instruction. The stopping method and apparatus for the device with the hoisting mechanism, the crane, the electronic device and the computer readable medium involved in the present application may achieve the purpose of rapid stopping control only through the hoisting handle of the device, and reduce the requirement for the driver's reaction time and increase the safety of the device when emergency stopping is required.

Provided is an estimation apparatus for estimating a number of wound layers of a wire rope in a crane including a boom, a winch drum, and the wire rope wound around the winch drum, the estimation apparatus being mounted on the crane, the estimation apparatus including: a calculation unit that calculates a delivery length of the wire rope; a detection unit that detects a rotational amount of the winch drum; and a control unit that estimates the number of wound layers, based on a difference in the delivery length of the wire rope and a difference in the rotational amount of the winch drum between a first orientation and a second orientation of the boom.

Provided is an estimation apparatus for estimating a number of wound layers of a wire rope in a crane including a boom, a winch drum, and the wire rope wound around the winch drum, the estimation apparatus being mounted on the crane, the estimation apparatus including: a calculation unit that calculates a delivery length of the wire rope; a detection unit that detects a rotational amount of the winch drum; and a control unit that estimates the number of wound layers, based on a difference in the delivery length of the wire rope and a difference in the rotational amount of the winch drum between a first orientation and a second orientation of the boom.