Abstract: Provided is a machine state detecting device capable of easily detecting the state of a machine, regardless of whether an unknown operation that is not expected to cause damage is performed. A state detecting device 100 includes a collection device 1a that collects, at a plurality of times, state information if indicating the state of the machine that changes chronologically, and an arithmetic processing device 1b that processes a plurality of pieces of the state information if collected at the plurality of times to detect the state of the machine.

Abstract: The purpose of the present invention is to provide a speed measurement device with which it is possible to accurately identify the highest travel speed of a work machine using the result of measurement by an acceleration sensor. The speed measurement device according to the present invention: detects, from within a record of the travel acceleration of a work machine, a change point at which the work machine transitions from an accelerating state to a steady travel state; and identifies the highest travel speed from a record of the travel speed in a period later than the change point.

Abstract: The purpose of the present invention is to provide a performance diagnostic device capable of diagnosing deterioration in performance of a work machine while taking into account the effects of the amount of load and the characteristics of the site where the work machine operates. A performance diagnostic device according to the present invention uses a reference performance model generated for each combination of the type of operation performed by a work machine, the amount of load, operation details, and site characteristics to diagnose the deterioration in performance of the work machine.

Abstract: An object of the invention of the present application is to provide a mine management system capable of accurately maintaining and managing the productivity of a mine.

Abstract: An action recognition system includes a controller that computes, in a time division manner, a plurality of feature vectors using as feature quantities information of a machine with respect to running that varies in a time sequence, generates a classification model by classifying the feature vectors into a plurality of clusters and allocating identification IDs to the clusters, generates an ID pattern model by allocating the identification IDs to the feature vectors computed in the time division manner on the basis of the classification model and associating a pattern of the identification IDs that vary in a time sequence according to a predetermined action of the machine with identification information of the predetermined action, generates output information for recognizing the predetermined action on the basis of changes in the identification IDs in the time sequence and the ID pattern model, and controls the display device to output the output information.

Abstract: A lower traveling structure (2) having front wheels (16) and rear wheels (17) provided on a chassis (12) extending in a front and rear direction, an upper revolving structure (4) rotatably mounted on the chassis (12), and a working mechanism (11) provided on a front side of the upper revolving structure (4) and at an intermediate position in a left and right direction are provided. On the other hand, a towing through hole (14J, 14K) bored through an upper side position on both left and right sides and in a front and rear direction and used for mounting a cable in towing is provided on a front attachment mounting plate (14) provided on a front side position of the chassis (12) constituting the upper revolving structure (4).

Abstract: An earthmoving apparatus includes an earthmoving blade (9) extending in the width direction of an undercarriage, a lifting unit (10) configured to move the earthmoving blade (9) up and down, and a cover unit (12) covering the lifting unit (10), wherein the earthmoving blade (9) can be moved by the lifting unit between a grounded position in which the earthmoving blade is in contact with the ground surface and a retracted position in which the earthmoving blade is held highest off the ground surface, while keeping a nearly vertical orientation with respect to the ground surface, the cover unit (12) includes a sub cover (27) extending from a location above the lifting unit (10) toward the earthmoving blade (9) and a main cover (28) slidable on the upper surface of the sub cover (27), the main cover (28) is pivotally attached to the earthmoving blade (9) in such a manner that one end portion of the main cover is nearly in contact with the top surface of the earthmoving blade, and when the earthmoving blade (9) i

Abstract: A lower traveling structure (2) having front wheels (16) and rear wheels (17) provided on a chassis (12) extending in a front and rear direction, an upper revolving structure (4) rotatably mounted on the chassis (12), and a working mechanism (11) provided on a front side of the upper revolving structure (4) and at an intermediate position in a left and right direction are provided. On the other hand, a towing through hole (14J, 14K) bored through an upper side position on both left and right sides and in a front and rear direction and used for mounting a cable in towing is provided on a front attachment mounting plate (14) provided on a front side position of the chassis (12) constituting the upper revolving structure (4).

Abstract: An earthmoving apparatus includes an earthmoving blade (9) extending in the width direction of an undercarriage, a lifting unit (10) configured to move the earthmoving blade (9) up and down, and a cover unit (12) covering the lifting unit (10), wherein the earthmoving blade (9) can be moved by the lifting unit between a grounded position in which the earthmoving blade is in contact with the ground surface and a retracted position in which the earthmoving blade is held highest off the ground surface, while keeping a nearly vertical orientation with respect to the ground surface, the cover unit (12) includes a sub cover (27) extending from a location above the lifting unit (10) toward the earthmoving blade (9) and a main cover (28) slidable on the upper surface of the sub cover (27), the main cover (28) is pivotally attached to the earthmoving blade (9) in such a manner that one end portion of the main cover is nearly in contact with the top surface of the earthmoving blade, and when the earthmoving blade (9) i

Abstract: A wheel type traveling body includes: a drive device provided on a frame for forming a chassis of the wheel type traveling body; pairs of left and right front and rear wheels which are provided on a front axle and a rear axle respectively, which are provided at the front and rear of the frame, respectively; a propeller shaft provided between the front and rear axles and transmitting the travel drive force of the drive device to the front and rear axles; and a bearing provided on the frame and rotatably supporting an intermediate part of the propeller shaft. The wheel type traveling body also includes a protection member provided so as to be separated from the bearing in the radial direction of the propeller shaft and so as to cover the outer periphery of the bearing from below.

Abstract: Mounted on a revolving frame are onboard equipments including engine and heat exchanger. These onboard equipments are accommodated in a housing cover consisted by including a front partition panel. The front partition panel is fixed to a seat screw member which is provided on the revolving frame. At this time, lower end portion of the front partition panel is hung in a floated state above the revolving frame by a stopper which is adapted rest on an upper end portion of the seat screw member. Therefore, lower end portion of the front partition panel is hung in a floated state above a upper surface of a left side frame, facilitating to align a bolt through hole in the front partition panel with a nut of the seat screw member at the time of threading and tightening a bolt into the nut.

Abstract: Mounted on a revolving frame are onboard equipments including engine and heat exchanger. These onboard equipments are accommodated in a housing cover consisted by including a front partition panel. The front partition panel is fixed to a seat screw member which is provided on the revolving frame. At this time, lower end portion of the front partition panel is hung in a floated state above the revolving frame by a stopper which is adapted rest on an upper end portion of the seat screw member. Therefore, lower end portion of the front partition panel is hung in a floated state above a upper surface of a left side frame, facilitating to align a bolt through hole in the front partition panel with a nut of the seat screw member at the time of threading and tightening a bolt into the nut.

Abstract: A hydraulic circuit includes a control valve that controls flow of pressure oil from a hydraulic source to work hydraulic cylinders, an operating device that issues a command for drive of the control valve, valve devices each comprising a check valve, each provided in correspondence to one of the plurality of work hydraulic cylinders to allow and prohibit outflow of pressure oil from a work hydraulic cylinder, a commanding device that outputs a command allowing or a command prohibiting extension/contraction for each of the work hydraulic cylinders and a control device that controls each of the valve devices to allow outflow of pressure oil from the work hydraulic cylinder by invalidating a check valve function in response to the command for allowing extension/contraction and to prohibit outflow of pressure oil from the work hydraulic cylinder with the check valve in response to the command for prohibiting extension/contraction.

Abstract: The wheeled work vehicle according to the present invention has a link that links at least either one of the axles and provided at the front and the rear of the vehicle to a body, suspension hydraulic cylinders provided at the left side and the right side of the chassis to link the axle to the body in conjunction with the link and an accumulator that is made to communicate with oil chambers and of the hydraulic cylinders via restrictors.

Abstract: The present invention includes an undercarriage (1), a revolving superstructure (2) rotatably mounted atop the undercarriage (1), a hydraulic source (21, 28) disposed at the revolving superstructure (2), at least a plurality of work hydraulic cylinders (11) disposed at the undercarriage (1), that are to be driven by pressure oil from the hydraulic source (28), a control valve (22) that controls flow of pressure oil from the hydraulic source (28) to the work hydraulic cylinders (11), an operating means (26) for issuing a command for drive of the control valve (22), valve devices (12a, 12b) each comprising a check valve, each provided in correspondence to one of the plurality of work hydraulic cylinders (11) to allow and prohibit outflow of pressure oil from a work hydraulic cylinder (11), a commanding means (41, 42) for outputting one of a command for allowing extension/contraction and a command for prohibiting extension/contraction for each of the work hydraulic cylinders (11) and a control means (34 to 36, 4

Abstract: The wheeled work vehicle according to the present invention comprises a link 4 that links at least either one of axles 1 and 1′ provided at the front and the rear of the vehicle to a body 70, suspension hydraulic cylinders 2 provided at the left side and the right side of the chassis 70 to link the axle 1 to the body 70 in conjunction with the link 4 and an accumulator 7 that is made to communicate with oil chambers 2b and 2c of the hydraulic cylinders 2 via restrictors 5a, 5b and 6a.

Abstract: The wheeled work vehicle according to the present invention has a link that links at least either one of the axles and provided at the front and the rear of the vehicle to a body, suspension hydraulic cylinders provided at the left side and the right side of the chassis to link the axle to the body in conjunction with the link and an accumulator that is made to communicate with oil chambers and of the hydraulic cylinders via restrictors.