The present invention relates to a mining system. The system includes a continuous miner for forming plunge tunnels from a roadway. A flexible conveyor system is coupled to the continuous miner for conveying mined material from the plunge tunnels. A controller is provided for controlling the continuous miner and the flexible conveyor system to travel along a predetermined path. Advantageously, the controller may control the drive and steering (including turning maneuvers) of the continuous miner and each conveyor module of the flexible conveyor system along the predetermined path to avoid striking either any adjacent equipment (e.g. another conveyor), or the ‘ribs’ of a plunge tunnel being mined.

The present invention relates to a mining system. The system includes a continuous miner for forming plunge tunnels from a roadway. A flexible conveyor system is coupled to the continuous miner for conveying mined material from the plunge tunnels. A controller is provided for controlling the continuous miner and the flexible conveyor system to travel along a predetermined path. Advantageously, the controller may control the drive and steering (including turning maneuvers) of the continuous miner and each conveyor module of the flexible conveyor system along the predetermined path to avoid striking either any adjacent equipment (e.g. another conveyor), or the ‘ribs’ of a plunge tunnel being mined.

A system and method are described for excavation of gravel from a gravel formation including an elongated cylindrical casing surrounding and supporting a rotating auger extending a chosen distance beyond an open end of the casing, and having openings through its upper surface for permitting gravel to enter the casing in addition to entering through the open end thereof, a source of vibration for vibrating the casing, a conveyor for removing material excavated by the system through an opening in the bottom surface of the casing, and a tracked excavator or other suitable vehicle for preventing the casing from rotating and for pushing the casing in a chosen horizontal direction into the gravel formation.

A system and method are described for excavation of gravel from a gravel formation including an elongated cylindrical casing surrounding and supporting a rotating auger extending a chosen distance beyond an open end of the casing, and having openings through its upper surface for permitting gravel to enter the casing in addition to entering through the open end thereof, a source of vibration for vibrating the casing, a conveyor for removing material excavated by the system through an opening in the bottom surface of the casing, and a tracked excavator or other suitable vehicle for preventing the casing from rotating and for pushing the casing in a chosen horizontal direction into the gravel formation.

Disclosed are a vehicle body utilized in a rockbreaker, a rockbreaker, and a rock breaking method. A rock breaking operation area is configured to pass through the vehicle body and in a direction perpendicular to and above the ground. An operation area of a rockbreaker arm is arranged within a vehicle range.

A mobile earth working machine (10), the earth working machine (10), in a reference state ready for earth-working operation, encompassing: a machine frame (20); a working apparatus for material-removing earth working; a functional apparatus that is different from the working apparatus (12) and is connected to the machine frame (20) pivotably movably relative to the machine frame (20); a pivot joint arrangement, arranged functionally between the machine frame (20) and the functional apparatus, having a frame-associated joint element (46) that is connected to the machine frame (20) immovably relative to the machine frame (20), and having an apparatus-associated joint element (50) that is coupled to the frame-associated joint element (46) pivotably relative thereto by means of a pivot joint (54) around a pivot axis (S) and is connected to the functional apparatus. There is embodied between the machine frame (20) and the functional apparatus (34, 86) a mechanical coupling structure (44) by means of which the functional apparatus is coupled intentionally physically detachably to the machine frame (20); the coupling structure (44) comprising a frame-side coupling configuration (56) and comprising an apparatus-side counterpart coupling configuration (58); the frame-side coupling configuration (56) and the apparatus-side counterpart coupling configuration (58) being either both embodied on the frame-associated joint element (46) or both embodied on the apparatus-associated joint element (50).

A rock excavating device includes a shaft and a cutting element. The shaft includes a first portion and a second portion connected to an end of the first portion. The first portion is rotatable about a first axis. The second portion extends along a second axis that is oblique with respect to the first axis. The cutting element includes a cutting edge. The cutting element is supported on the second portion and rotatable about the second axis. Rotation of the first portion of the shaft about the first axis changes the orientation of the second axis and the cutting element.

Methods and systems for controlling the heading of a mining machine while the mining machine performs a cutting operation. One system includes a cutting system and a set of left and right tracks of the mining machine. The system also includes a lidar sensor mounted to the mining machine. The system also includes an electronic processor configured to receive the data from the lidar sensor. The electronic processor is also configured to determine a current heading of the mining machine based on the data received from the lidar sensor and compare the current heading to a target heading of the mining machine. In response to the current heading not being different from the target heading of the mining machine by a predetermined amount, the electronic processor is configured to control the mining machine to adjust the current heading of the mining machine.

A cutting assembly for a rock excavation machine including a frame. The cutting assembly includes a boom supported on the frame and a cutting device. In some aspects, the boom includes a first portion and a second portion, and the first portion includes a first structure and a second structure slidable relative to the first structure. The second portion includes a first member pivotably coupled to the second structure, and a second member pivotably coupled to the first member. The cutting device is supported on the second member. In some aspects, a material handling device is supported independently of the boom and movable between a retracted position and an extended position independent of the boom.

A self-propelled construction machine comprises a machine frame, at least three travelling devices, at least one hydraulic drive system for driving at least two travelling devices, wherein the hydraulic drive system comprises at least one controllable hydraulic motor with variable displacement volume and at least one hydraulic pump, at least one working device (e.g. a milling drum), for working the ground pavement. A detection device detects fluctuations in the longitudinal speed of the construction machine during movement thereof, wherein a control unit alters the displacement volume of the at least one controllable hydraulic motor as a function of the detected fluctuations so that the natural frequency of the hydraulic drive system is altered, wherein the control unit adjusts the discharge volume of the pump as a function of the amount of adjustment of the displacement volume in such a fashion that the specified drive speed remains constant.