The invention relates to a tread device for walking on a crawler carrier of a work machine having a caterpillar drive, wherein the tread device has a holder that can be installed at the crane, in particular at the crawler carrier, at which at least one tread surface is provided, characterized in that the tread surface lies on the upwardly disposed surface of a crawler chain of the caterpillar drive in the state installed at the work machine and the lower side of the tread surface comprises at least one sliding element to ensure a sliding or rolling relative movement between the crawler chain and the tread surface.

The invention relates to a tread device for walking on a crawler carrier of a work machine having a caterpillar drive, wherein the tread device has a holder that can be installed at the crane, in particular at the crawler carrier, at which at least one tread surface is provided, characterized in that the tread surface lies on the upwardly disposed surface of a crawler chain of the caterpillar drive in the state installed at the work machine and the lower side of the tread surface comprises at least one sliding element to ensure a sliding or rolling relative movement between the crawler chain and the tread surface.

The present invention relates to an eco-friendly wind power generation apparatus that can perform power generation using wind by providing the blades of a wind power generator on a jib of a tower crane, and can perform wind power generation at the optimum altitude and in the optimum direction by automatically or manually performing the lifting/lowering and swing operation of a jib even when wind speed is insufficient because wind is not blowing, or perform wind power generation using artificial wind power generated by the operation of the jib, thereby generating a lot of electricity in necessary places and supply the electricity to all industrial sectors regardless of location and environment.

The present invention relates to an eco-friendly wind power generation apparatus that can perform power generation using wind by providing the blades of a wind power generator on a jib of a tower crane, and can perform wind power generation at the optimum altitude and in the optimum direction by automatically or manually performing the lifting/lowering and swing operation of a jib even when wind speed is insufficient because wind is not blowing, or perform wind power generation using artificial wind power generated by the operation of the jib, thereby generating a lot of electricity in necessary places and supply the electricity to all industrial sectors regardless of location and environment.

There is provided a crane that is assemblable and disassemblable and is capable of changing a monitoring range for periphery monitoring according to an assembly state of the crane.

There is provided a crane that is assemblable and disassemblable and is capable of changing a monitoring range for periphery monitoring according to an assembly state of the crane.

The present disclosure relates to engineering machinery and a dynamic anti-collision method, device, and system for operation space thereof. The dynamic anti-collision method for operation space includes: receiving obstacle information of an obstacle around a boom of engineering machinery and boom motion information of the engineering machinery; determining obstacle coordinates according to the obstacle information and the boom motion information; deciding whether the obstacle coordinates are located in a predetermined early warning area or not; and indicating an execution device to send out collision warning information in case where the obstacle coordinates are located in the predetermined early warning area.

The present disclosure relates to engineering machinery and a dynamic anti-collision method, device, and system for operation space thereof. The dynamic anti-collision method for operation space includes: receiving obstacle information of an obstacle around a boom of engineering machinery and boom motion information of the engineering machinery; determining obstacle coordinates according to the obstacle information and the boom motion information; deciding whether the obstacle coordinates are located in a predetermined early warning area or not; and indicating an execution device to send out collision warning information in case where the obstacle coordinates are located in the predetermined early warning area.

An informing device is an informing device mounted on a work vehicle that includes a lower base body, and a swivel body swivelably provided at the lower base body. The informing device includes a first detection unit that detects the actual amount of rotation of a drive device which swivels the swivel body or a driven part driven by the drive device, and a notification unit that issues a notification regarding information corresponding to the amount of rotation detected by the first detection unit.

An informing device is an informing device mounted on a work vehicle that includes a lower base body, and a swivel body swivelably provided at the lower base body. The informing device includes a first detection unit that detects the actual amount of rotation of a drive device which swivels the swivel body or a driven part driven by the drive device, and a notification unit that issues a notification regarding information corresponding to the amount of rotation detected by the first detection unit.