A joystick for performing control functions of a machine having a work tool may include a base portion configured to at least partially support an operator's hand, and a handle extending from the base portion. The base portion may be configured for connection to a control interface surface in a machine cabin or on a remote control console or a remote operator's station for the machine. The handle may extend from the base portion with a proximal end of the handle being connected to the base portion, and a distal end of the handle supporting a head portion of the joystick. The head portion of the joystick may include a back surface that is contiguous with a back surface of the handle, and a front surface including a face plate tilted at an angle of 10 degrees plus or minus 5 degrees in a direction toward a position of the operator sitting in an operator's seat of the machine with respect to a plane parallel to the back surface.

An impact hammer for breaking a working surface, the hammer including a drive mechanism and a housing with an inner containment surface and a reciprocating hammer weight. A reciprocation cycle of the hammer weight includes an upstroke and a down-stroke, the hammer weight respectively moving upwards and downwards. On the down-stroke the hammer weight impacts a striker pin with a driven end and a working surface impact end. A vacuum chamber in the housing is formed by the containment surface, upper vacuum sealing coupled to the hammer weight and lower vacuum sealing. The hammer weight is driven toward the striker pin by the pressure differential between atmosphere and the vacuum chamber formed on the upstroke. A down-stroke vent permits fluid egress from the vacuum chamber on the down-stroke.

A remote operation device includes an image generating section that generates, when an operation determining section determines that an operation by an operator is a fine operation, and a posture determining section determines that a posture of the operator has changed from a reference posture to a watching posture, an enlarged image by enlarging a part of a work image of a construction machine, the part being related to a line-of-sight position acquired by an eye tracking device, and causes a display device to display the enlarged image.

In one aspect, a method for shared access of a machine for operator training, the machine including a traction device and an implement, includes receiving an authorization from an access device to share access to the machine, and entering a shared control state based on at least the authorization received from the access device. The method also includes receiving commands from a remote operation device during the shared control state and operating at least one of the traction device or the implement of the machine based on at least the commands from the remote operation device while an operator is present in the machine.

A work assistance server 10 according to the present invention includes a first assistance processing element 121 that generates a surroundings image including a region around a work machine 40 when a request to start work by the work machine 40 is made, and a second assistance processing element 122 that permits the work by the work machine 40 on condition that the surroundings image is displayed on an image output device 221 of a remote operation apparatus 20.

A first control unit outputs, to a work machine including work equipment, a first control signal of moving the work equipment to a position above a loading point before a transport vehicle including a dump body reaches the loading point. A transmission unit transmits, to the transport vehicle, an accessing instruction to travel the transport vehicle such that the dump body is located at the loading point. A second control unit outputs a second control signal of controlling the work machine or the transport vehicle such that a deviation between a waiting position of the work equipment and a position of the dump body when the transport vehicle arrives at the loading point based on the accessing instruction becomes small. The waiting position is a position of the work equipment holding an excavation object and waiting based on the first control signal.

A work machine includes one or more processors; and a memory device storing a program, wherein when executed by the one or more processors, causes a computer of the work machine to perform a process including prompting an operator to perform a safety check around the work machine at intervals of a predetermined time when the operator has not performed the safety check around the work machine for more than the predetermined time.

A shovel includes a lower traveling body, an upper turning body turnably mounted on the lower traveling body, a cabin mounted on the upper turning body, an operator's seat installed in the cabin, an operating lever installed in the cabin, and a switch installed in the cabin, where the switch is disabled when the operating lever is operated.

An excavator includes a lower traveling body; an upper turning body turnably mounted to the lower traveling body; an attachment that is attached to the upper turning body; and a power engine that is mounted to the upper turning body. The excavator is configured such that, before a low-load operation by the attachment is started, a rotation speed of the power engine is reduced.

A method is provide, which includes the steps of receiving a three-dimensional tunnel model of an underground tunnel system of a worksite, receiving two-dimensional position data having sets of x coordinate values and y coordinate values of a mobile device in the underground tunnel system, performing a vertical plane ray cast operation in the tunnel model at a mobile device position defined by an x coordinate value and an y coordinate value in the received position data, and determining a z coordinate value for the mobile device position on the basis of the ray cast operation and at least one earlier resolved z coordinate value for a preceding mobile device position.