Systems and methods for monitoring an attachment, such as a breaker head, for a mining machine. The system includes a breaker head, a wireless identification tag, a sensor, and an electronic processor. The wireless identification tag is coupled to the breaker head and includes a tag memory storing an identifier of the breaker head and an antenna. The sensor is configured to generate measurement data associated with the breaker head. The electronic processor is configured to receive measurement data from the sensor, generate a notification based on the measurement data, and transmit the notification to the wireless identification tag. Additionally, the wireless identification tag is configured to store the notification. The notification can then be later retrieved from the wireless identification tag by various devices, such as a further mining machine or a reader device of maintenance personnel.

A control system and method of controlling a utility vehicle. The system may include a controller, an energy mode input associated with a user input request to select one of at least two power modes, an implement control input associated with a user input request to select a movement of an implement, a drive control input associated with a user input request to select a movement of a drive system to propel the utility vehicle, and an attachment type input to further refine the allowed operating power states. The controller is adapted to determine a change between the plurality of operating power states in response to user input requests to automatically optimize machine performance and efficiency. Each of the plurality of operating power states includes a maximum electric current output and a maximum speed output of the electric motor.

The present invention relates to a hydraulic breaker. The valve is installed on an inner surface of the cylinder bush and the cylinder inner diameter portion to be movable in the vertical direction. The valve includes an upper valve portion having an upper end surface on which the pressure of the upper cylinder chamber acts, a lower valve portion having a lower end surface on which the pressure of the upper cylinder chamber acts, a first valve expanded-diameter portion which is formed between the upper valve portion and the lower valve portion, of which an outer diameter expands to be greater than outer diameters of the upper valve portion and the lower valve portion, and in which a first upper valve hydraulic pressure area communicates with the first and second flow channels, and a second valve expanded-diameter portion which is formed between the first valve expanded-diameter portion and the lower valve portion, of which an outer diameter expands to be greater than an outer diameter of the first valve expanded-diameter portion, and in which the second upper valve hydraulic pressure area communicates with the fourth flow channel, and the pressure of the valve switching chamber acts on a lower valve hydraulic pressure area having an area greater than an area of the first upper valve hydraulic pressure area.

A confluence control part of a slewing-type construction machine controls a confluence switch valve such that the confluence switch valve is switched to a suspension state when a slewing and boom raising manipulation action is performed. A pump capacity control part of the slewing-type construction machine executes a capacity control when the slewing and boom raising manipulation action is performed, the capacity control including regulating a first pump capacity and a second pump capacity respectively in such a manner that the first pump capacity increases and the second pump capacity decreases as an operating pressure difference resulting from the subtraction of a slewing operating pressure from a boom operating pressure increases, and the first pump capacity decreases and the second pump capacity increases as the operating pressure difference decreases.

The present invention provides a chisel for a hydraulic breaker that is installed inside the hydraulic breaker and struck by a reciprocating piston, including a chisel body having a shaft structure provided with a horn-shaped crushing portion at a lower end; and a stress distribution portion that is provided with a concave-convex form in which a plurality of grooves and protrusions are alternately formed on an outer circumferential surface of the chisel body in a longitudinal direction, and disperses a stress wave transmitted from an upper side to a lower side of the chisel body by striking of the piston and a stress wave transmitted from the lower portion to the upper portion of the chisel body by striking of a crushing portion to a crushed object.

The present disclosure relates to a vehicular work machine (10) that is adapted for handling at least two different interchangeable tools (4). The machine (10) also comprises a user control device (11) and a water supply arrangement (31) that is adapted to distribute water for retaining dust that is created when a tool (4) is used, The water supply arrangement (31) comprises a controllable valve (24) that is arranged to control the flow of the water that is distributed via at least one nozzle (29). The user control device (11) is arranged for selection of a desired tool, where at least one selectable tool is associated with a certain predefined water setting. Each water setting relates to a certain relative flow of distributed water during a certain time that is related to the time said tool (4) is chosen and performing a certain work procedure, and/or to the time said tool (4) is chosen and ready to perform a certain work procedure.

An example bushing of a hydraulic hammer tool includes a bulk region and an inner region. The inner region has a relatively greater hardness than the bulk region. The inner region may also be compressively stressed, while the bulk region may have tensile stress. The stress and/or hardness profile of the bushing may enhance its resistance to wear and galling defects when a hammer of the hydraulic hammer tool is held in alignment by the bushing. The bulk region of the bushing may be relatively soft, resulting in the bushing having a relatively high level of toughness. The bushing may be formed using medium to high carbon steel by rough forming the bushing, hardening the bushing, tempering the bushing, induction hardening the inner region of the bushing, and then quenching the inner region.

A demolition machine includes a deck having a front edge, a rear edge, a left side, and a right side, with the deck defining a central axis along a direction extending from the rear edge to the front edge and equally spaced from the left side and the right side of the deck, a drive assembly secured to the deck, with the drive assembly rotatable relative to the deck, an engine received by the deck and positioned at one of the left side and right side of the deck, an energy reservoir and hydraulic reservoir each received by the deck and positioned on an opposite side of the deck from the engine, and a boom assembly secured to a boom support structure of the deck. The boom assembly is moveable relative to the deck, with the boom support structure positioned on the central axis.

A construction machine that can display various work devices including a bucket on a display device without causing a sense of discomfort is provided. A display controller is configured to deform a first drawing figure to create a first post-deformation drawing figure such that a triangle having vertexes at a first coupling point, a second coupling point and a first monitor point in the first drawing figure becomes congruent with a triangle having vertexes at the first coupling point, the second coupling point and the first monitor point in a coordinate system on an image on a display device, and arrange the first post-deformation drawing figure on a screen of the display device such that positions of the first coupling point, the second coupling point and the first monitor point in the first post-deformation drawing figure are arranged correspondingly to positions of the first coupling point, the second coupling point and the first monitor point, respectively, in the coordinate system on the image.

A cover for a hammer tool and systems, assemblies, and methods thereof can be flexible and can comprise a body; a first attachment interface at a first end portion of the body; and a second attachment interface at a second end portion of the body separated from the first end portion of the body. A predefined hinge can be formed in the body of the cover, between the first attachment interface and the second attachment interface. The cover can be configured to be fixedly coupled to a housing of a hammer tool via the first attachment interface. The cover can be configured to be removably coupled to the housing of the hammer tool via the second attachment interface.