An excavation data processing method includes: a first acquisition step of acquiring position data of a reference part of an excavating body, position data of a plurality of measuring parts with respect to the reference part in the excavating body, and data indicative of an excavation depth; a second acquisition step of acquiring inclination angle data of the plurality of measuring parts of the excavating body; a first deriving step of deriving a plurality of measurement positions as positions of the plurality of measuring parts from the reference part position data, the plurality of measuring part positions data and inclination angles data; a second deriving step of deriving an excavation bottom position by interpolation processing based on the plurality of measurement positions and the excavation depth; and an output step of outputting information of the excavation bottom position.

Vehicles having a control console that may be moved between a plurality of locations relative to the body of the vehicle are disclosed. The control console may include a direction control device for controlling movement of the vehicle that is adaptive such that movement of the vehicle is based on both the direction at which the direction control device is actuated and the sensed position of the control console.

A system for determining a location of a work machine operator relative to a work machine comprises a machine controller, a radio frequency receiver, and an infrared transmitter unit. The unit comprises a plurality of infrared transmitters configured to generate infrared signals that collectively divide a 360-degree area around the infrared transmitter unit into a plurality of zones. A remote controller remote from the work machine, which comprises a radio frequency transceiver and an infrared receiver, is configured to receive the infrared signal generated by at least one of the plurality of infrared transmitters. The remote controller has a computer system which is configured to decode information within the one or more infrared signals to determine whether the operator is in an approved zone. The computer system enables the radio frequency transceiver to communicate with the radio frequency receiver upon determining that the operator is in the approved zone.

A handheld trenching apparatus and method of forming a trench in ground using the apparatus. The apparatus has a frame, a cutting head, and a drive. The cutting head has a ground penetrating portion with a plurality of cutting members that are caused to be moved in a controlled path by the drive. The frame has an elongate frame part with the cutting head at one frame part end. The frame further has at least one graspable region spaced lengthwise of the elongate frame part from the first elongate frame part end. The ground penetrating portion is directed into the ground and while engaging the at least one graspable region the ground penetrating portion is moved in a trench forming direction as the drive is operated to thereby form a trench.

A handheld trenching apparatus and method of forming a trench in ground using the apparatus. The apparatus has a frame, a cutting head, and a drive. The cutting head has a ground penetrating portion with a plurality of cutting members that are caused to be moved in a controlled path by the drive. The frame has an elongate frame part with the cutting head at one frame part end. The frame further has at least one graspable region spaced lengthwise of the elongate frame part from the first elongate frame part end. The ground penetrating portion is directed into the ground and while engaging the at least one graspable region the ground penetrating portion is moved in a trench forming direction as the drive is operated to thereby form a trench.

A foundation construction device for use in a construction device of a foundation (4) provided with a chain cutters (3) at the bottom during construction, comprising a fixed guiding device (1) and a composite device (2). The fixed guiding device (1) is composed of a fixed rack (1-1) and a guiding device (1-2). The composite device (2) comprises a chain cutter power transmission device (2-1), a spoil treatment device (2-2), and a rack (2-3). Also disclosed is a construction method for the foundation construction device.

A guidance system for remotely guiding a work machine along a virtual path. The system uses a vision system to capture image data representative of areas surrounding the work machine. The image data is used to produce a spatial map. Analysis of image data allows the work machine's then-current position to be represented on the spatial map. A virtual path extending from the work machine's position is next added to the spatial map. The virtual path may be generated in response to external input provided at the display showing an image of the spatial map. Using continuously-updated image data, the work machine is driven toward the virtual path. During operation, the actual path of the work machine is compared to the virtual path. If any deviation between the paths is detected, the trajectory of the work machine is automatically adjusted.

A guidance system for remotely guiding a work machine along a virtual path. The system uses a vision system to capture image data representative of areas surrounding the work machine. The image data is used to produce a spatial map. Analysis of image data allows the work machine's then-current position to be represented on the spatial map. A virtual path extending from the work machine's position is next added to the spatial map. The virtual path may be generated in response to external input provided at the display showing an image of the spatial map. Using continuously-updated image data, the work machine is driven toward the virtual path. During operation, the actual path of the work machine is compared to the virtual path. If any deviation between the paths is detected, the trajectory of the work machine is automatically adjusted.

The underwater trencher includes an underwater moving body, and a trench digger provided in the underwater moving body by a support plate and a cutter support provided on an upper surface of the underwater moving body; a cable guide member configured to guide the submarine cable to a trench excavated by the trench digger is coupled to the cutter support; and an upwardly opened guide portion of the cable guide member is provided with a depressor configured to press downwards the submarine cable drawn into and guided by the cable guide member or to release a pressing force so as to relax a tensioned state of the submarine cable when tension is generated in the submarine cable.

The underwater trencher includes an underwater moving body, and a trench digger provided in the underwater moving body by a support plate and a cutter support provided on an upper surface of the underwater moving body; a cable guide member configured to guide the submarine cable to a trench excavated by the trench digger is coupled to the cutter support; and an upwardly opened guide portion of the cable guide member is provided with a depressor configured to press downwards the submarine cable drawn into and guided by the cable guide member or to release a pressing force so as to relax a tensioned state of the submarine cable when tension is generated in the submarine cable.