Abstract: A method for judging a winding disorder of a rope onto a drum of a winch includes acquiring a captured image by a camera oriented to the drum, performing, on the basis of the captured image, a judgment on whether the winding disorder of the rope is present or absent and a determination of a disorder degree indicating the degree of the winding disorder, and outputting results of the judgment and the determination.

Abstract: A lattice structure is mounted on a work machine, and is detachably coupled to a counterpart lattice structure adjacent to the lattice structure. The lattice structure includes a connector to which an end portion of any main pipe among a plurality of main pipes is connected and to which an end portion of at least one inclined pipe among a plurality of inclined pipes is connected, the connector being detachably coupled to a counterpart connector included in a counterpart lattice structure.

Abstract: In a work machine suspension device, each of a plurality of retention devices includes a support member that is supported by a first leg portion main body so as to be movable between an entry allowed position and a retention position. The entry allowed position is a position where the support member retracts from a second leg portion main body to allow a retained portion to enter between the first leg portion main body and the second leg portion main body, and the retention position is a position where the retained portion is retained on the support member while the support member is supported by the first leg portion main body and the second leg portion main body.

Abstract: In a working machine, a plurality of diagonal members includes a plurality of first diagonal members for connecting a first main member and a second main member with each other, the first diagonal members including a first nearest diagonal member located nearest to a first connector connected to an end of the first main member. A first reinforcement part extends from the first nearest diagonal member to the second main member or a second connector in a first specific direction for connecting the first nearest diagonal member and, the second main member or the second connector connected to an end of the second main member with each other.

Abstract: A lattice structure is mounted on a work machine, and is detachably coupled to a counterpart lattice structure adjacent to the lattice structure. The lattice structure includes a connector to which an end portion of any main pipe among a plurality of main pipes is connected and to which an end portion of at least one inclined pipe among a plurality of inclined pipes is connected, the connector being detachably coupled to a counterpart connector included in a counterpart lattice structure.

Abstract: A mobile crane includes: a lower traveling body including a pair of crawlers; an upper slewing body supported on the lower traveling body slewably about a slewing axis; a tiltable attachment including a boom tiltably supported on the upper slewing body; and a physical quantity detector. The lower traveling body has a reaction force receiving part for receiving a reaction force from the ground at a position away from the slewing axis in a boom direction in a state where the pair of crawlers are in contact with the ground, the boom direction coinciding with a horizontal component of a direction in which the boom extends from the upper slewing body, and the physical quantity detector detects a physical quantity which changes in accordance with a change in the reaction force received from the ground by the reaction force receiving part.