摘要:
A wheel loader having good operability. The wheel loader has a machine body travelably supported on wheels; a working device supported on the machine body, the working device having a boom swingably supported at its base end side on the machine body, an arm swingably supported at and connected to the forward end side of the boom, and a working tool swingably provided on the forward end side of the arm; travel operation means for performing travel operation of the machine body; and a brake for braking, when the travel operation means is not operated and the arm is swung, the wheels in operative association with the swing of the arm.
摘要:
A wheeled work machine in which the center of gravity of a machine body is positioned low and the stability of the machine in a working position is secured without regard to the movement of the center of gravity caused by the rotation of a rotation table during work. An operation body (111) integrally rocking with a front axle case (96) is provided at the center in the left-right direction of the front axle case (96), and a rocking lock mechanism (112) for limiting the rocking of the operation body (111) is provided at a machine body frame (6). The rocking lock mechanism (112) has a lock cylinder (115) in which a piston rod (120) is horizontally fixed to the machine frame (6) and a switchover valve (118) for switching two oil chambers (124A, 124B) of the lock cylinder (115) between a communicated state and a closed state. A cylinder tube (116) of the lock cylinder (115) is operably connected to the operation body (111).
摘要:
A wheel loader having good operability. The wheel loader has a machine body travelably supported on wheels; a working device supported on the machine body, the working device having a boom swingably supported at its base end side on the machine body, an arm swingably supported at and connected to the forward end side of the boom, and a working tool swingably provided on the forward end side of the arm; travel operation means for performing travel operation of the machine body; and a brake for braking, when the travel operation means is not operated and the arm is swung, the wheels in operative association with the swing of the arm.
摘要:
Disclosed is a work machine having a traveling apparatus and a work implement driven by an engine. A hydraulic system mounted on the work machine includes an HST pump comprising a swash plate, variable displacement pump driven by the engine, an HST motor connected in a closed circuit to the HST pump and a pair of speed-changing oil passageways, the HST motor being driven by an amount of oil supplied by the HST pump, thereby to drive the traveling apparatus, a main pump driven by the engine, the main pump supplying pressure oil to the work implement, a pilot pump driven by the engine, a swash plate positioning circuit configured to effect positioning of a swash plate of the HST pump with pilot oil supplied from the pilot pump, and a bleed circuit configured to drain, via a throttle, a portion of the pilot oil supplied to the swash plate positioning circuit.
摘要:
A wheeled work machine in which the center of gravity of a machine body is positioned low and the stability of the machine in a working position is secured without regard to the movement of the center of gravity caused by the rotation of a rotation table during work. An operation body (111) integrally rocking with a front axle case (96) is provided at the center in the left-right direction of the front axle case (96), and a rocking lock mechanism (112) for limiting the rocking of the operation body (111) is provided at a machine body frame (6). The rocking lock mechanism (112) has a lock cylinder (115) in which a piston rod (120) is horizontally fixed to the machine frame (6) and a switchover valve (118) for switching two oil chambers (124A, 124B) of the lock cylinder (115) between a communicated state and a closed state. A cylinder tube (116) of the lock cylinder (115) is operably connected to the operation body (111).
摘要:
Disclosed is a work machine having a traveling apparatus and a work implement driven by an engine. A hydraulic system mounted on the work machine includes an HST pump comprising a swash plate, variable displacement pump driven by the engine, an HST motor connected in a closed circuit to the HST pump and a pair of speed-changing oil passageways, the HST motor being driven by an amount of oil supplied by the HST pump, thereby to drive the traveling apparatus, a main pump driven by the engine, the main pump supplying pressure oil to the work implement, a pilot pump driven by the engine, a swash plate positioning circuit configured to effect positioning of a swash plate of the HST pump with pilot oil supplied from the pilot pump, and a bleed circuit configured to drain, via a throttle, a portion of the pilot oil supplied to the swash plate positioning circuit.
摘要:
A communication network of the present invention includes: a plurality of superordinate nodes 110 to 1m0 forming a cascade type topology; and a plurality of terminal nodes 111 to 11n, connected to at least one superordinate node from among said plurality of superordinate nodes and forming a star type topology with the superordinate node connected.
摘要:
An ideal step-profile in a channel region is realized easily and reliably, whereby suppression of the short-channel effect and prevention of mobility degradation are achieved together. A silicon substrate is amorphized to a predetermined depth from a semiconductor film, and impurities to become the source/drain are introduced in this state. Then the impurities are activated, and the amorphized portion is recrystallized, by low temperature solid-phase epitaxial regrowth. With the processing temperature required for the low temperature solid-phase epitaxial regrowth being within a range of 450° C.-650° C., thermal diffusion of the impurities into the semiconductor film is suppressed, thereby maintaining the initial steep step-profile.
摘要:
An ideal step-profile in a channel region is realized easily and reliably, whereby suppression of the short-channel effect and prevention of mobility degradation are achieved together. A silicon substrate is amorphized to a predetermined depth from a semiconductor film, and impurities to become the source/drain are introduced in this state. Then the impurities are activated, and the amorphized portion is recrystallized, by low temperature solid-phase epitaxial regrowth. With the processing temperature required for the low temperature solid-phase epitaxial regrowth being within a range of 450° C.–650° C., thermal diffusion of the impurities into the semiconductor film is suppressed, thereby maintaining the initial steep step-profile.
摘要:
A sensor holding member holding a position sensor and an attachment member that attaches the sensor holding member to a cylinder tube are formed separately. The sensor holding member is placed with a sensor attachment groove oriented in the direction of the axis of the cylinder tube and in contact with the outer surface of the cylinder tube. The attachment member is placed so as to straddle the sensor holding member. By tightening an attachment screw and fixing the attachment member with an attachment band, the sensor holding member is pressed against and fixed to the outer surface of the cylinder tube by the attachment member. Loosening the attachment screw allows the sensor holding member to be displaced relative to the attachment member in the direction of the axis of the cylinder tube.