Abstract: A working machine includes: a boom base portion including: an inner side wall; and an outer side wall disposed opposite to the inner side wall; a lift link disposed on a rear portion of the boom base portion; and a boom cylinder disposed in front of the lift link. One end side of the lift link is inserted between the inner side wall and the outer side wall and is pivotally supported on the boom base portion. The other end side of the lift link is pivotally supported on the machine body. One end of the boom cylinder is inserted between the inner side wall and the outer side wall in front of the lift link and is pivotally supported on the boom base portion. The other end of the boom cylinder is pivotally supported on the machine body by below the lift link.

Abstract: The present invention intends to allow a good layout of and an easy maintenance of parts disposed around a rear portion of the motor. A working machine includes a machine body; a motor mounted on the machine body; an output shaft protruding from a rear portion of the motor; a rear attachment portion disposed on the rear portion of the motor, the rear attachment portion facing backward; and a mount member configured to support the motor to suppress vibration of the motor, the mount member including: a first support member having an opposite attachment portion, the opposite attachment portion being attached opposite to the rear attachment portion; an elastic member attached to the first support member; and a second support member disposed on the machine body, the second support member being configured to support the elastic member.

Abstract: A working machine includes: a machine frame; an operator seat provided on the machine frame; a boom arranged on each side of the operator seat; a boom base portion being a part of the boom, the boom base portion being provided to a position corresponding to a rear portion side of the machine frame and being pivotally supported to enable the boom to swing upward and downward; a hose insertion hole provided in the boom base portion, the hose insertion hole being opened upward and downward; and a hydraulic hose internally installed into an inside of the boom through the hose insertion hole, the hydraulic hose being used for passage of a hydraulic operation fluid.

Abstract: A loader work machine is disclosed in which a base portion of each of right/left arms (77) is received by an arm support portion (164) of a first lift link (81) and pivotally supported by a first arm shaft (88), and a hydraulic pipe arrangement (167) connected to a hydraulic actuator (98) extend through an support frame (11) from inside to outside of its inner wall (12), and toward an arm (77). The base portion of the arm (77) is supported to the arm support portion (164) at a position adjacent a link outer wall (157) in a transverse direction so that a hose accommodation space (165) is formed between a link inner wall (156) and an internal side face of the base portion of the arm (77). The hydraulic pipe arrangement (167) runs frontward of the first arm shaft (88) and a first link shaft (85), and is disposed in the hose accommodation space (165).

Abstract: Positional relationship among the first link support shaft (85), the second link support shaft (86), the first arm support shaft (88) and the second arm support shaft (89) is set such that an upper portion of the first lift link (81) comes into substantial agreement with a rear end of the machine body (1), when the upper free end of the first lift link (81) is pivoted maximally rearward in the course of transition of the arm (77) from a lowermost state realized lifting down the arm (77) to an uppermost state realized by lifting up the arm (77).

Abstract: A hood for a loader work machine is provided at the rear end of the frame body and downwardly of the transverse connecting member between the pair of right/left support frame members. The transverse connecting member includes a front wall plate and an upper wall plate projecting rearward from an upper end of the front wall plate. The upper wall plate of the transverse connecting member is disposed more downwardly than the vertical center of the cabin. A rear portion of the upper wall plate is inclined downwardly rearward. A hood upper wall is provided for covering a rear upper side between the pair of right/left support frame members. A front end portion of the hood upper wall is connected to the rear portion of the upper wall plate of the transverse connecting member. The hood upper wall is inclined downwardly rearward in correspondence with the rear portion of the upper wall plate.

Abstract: A wheel type work machine having improved ease of assembly and a compact-sized traveling system power transmission mechanism. The wheeled work machine comprises a traveling body (2) having an engine (7) mounted at the rear of a machine frame (6) supported by front and rear wheels (4, 5) and the traveling system power transmission mechanism (8) for transmitting power from the engine (7) to the rear wheels (5). The traveling system power transmission mechanism (8) comprises a rear wheel differential device (38) disposed on the front side of the engine (7), a hydrostatic transmission (35) disposed on the front side and the rear wheel differential device and receiving the power from the engine (7), and a mechanical transmission device (37) disposed between the hydrostatic transmission (35) and the rear wheel differential device (38) and transmitting the power from the hydrostatic transmission (35) to the rear wheel differential device (38).

Abstract: A loader work machine is disclosed in which a base portion of each of right/left arms (77) is received by an arm support portion (164) of a first lift link (81) and pivotally supported by a first arm shaft (88), and a hydraulic pipe arrangement (167) connected to a hydraulic actuator (98) extend through an support frame (11) from inside to outside of its inner wall (12), and toward an arm (77). The base portion of the arm (77) is supported to the arm support portion (164) at a position adjacent a link outer wall (157) in a transverse direction so that a hose accommodation space (165) is formed between a link inner wall (156) and an internal side face of the base portion of the arm (77). The hydraulic pipe arrangement (167) runs frontward of the first arm shaft (88) and a first link shaft (85), and is disposed in the hose accommodation space (165).

Abstract: 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).

Abstract: A loader work machine includes: a first lift link (81) and a second lift links (82) disposed forwardly of the first lift link (81) for vertically pivotally supporting a base portion of an arm (77) at a rear upper portion of a machine body frame (1); an arm cylinder (79) provided between the base portion of the arm (77) and a rear lower portion of the machine body frame for lifting up/down the arm (77); a first link support shaft (85) for pivotally supporting a lower base portion of the first lift link (81) to the machine body frame (1); a second link support shaft (86) for pivotally connecting a base portion of the second lift link (82) to the machine body frame (1), at a position forwardly of the first link support shaft; a first arm support shaft (88) for pivotally supporting a base portion of the arm (77) to an upper free end of the first lift link (81); a second arm support shaft (89) for pivotally connecting a base portion of the arm (77) to a free end of the second lift link (82), at a position forwardl

Abstract: An improvement of a loader work machine is disclosed. A machine body frame includes a frame body having a bottom wall and a pair or right/left side walls, and a pair of right/left support frame members connected to a rear end of the frame body. A cabin is mounted on the machine body frame. A transverse connecting member is disposed rearwardly of the cabin for connecting the pair of right/left support frame members to right/left sides thereof, respectively. A pair of right/left arms are disposed on right/left sides of the machine body frame, with base portions thereof being vertically pivotally supported to the pair of right/left support frame members, respectively. A pair of right/left arm cylinders are provided between the base portions of the arms and the rear portions of the machine body frame for lifting up/down the arms. A hood is provided at the rear end of the frame body and downwardly of the transverse connecting member between the pair of right/left support frame members, for housing an engine.

Abstract: A wheel type work machine having improved ease of assembly and a compact-sized traveling system power transmission mechanism. The wheeled work machine comprises a traveling body (2) having an engine (7) mounted at the rear of a machine frame (6) supported by front and rear wheels (4, 5) and the traveling system power transmission mechanism (8) for transmitting power from the engine (7) to the rear wheels (5). The traveling system power transmission mechanism (8) comprises a rear wheel differential device (38) disposed on the front side of the engine (7), a hydrostatic transmission (35) disposed on the front side and the rear wheel differential device and receiving the power from the engine (7), and a mechanical transmission device (37) disposed between the hydrostatic transmission (35) and the rear wheel differential device (38) and transmitting the power from the hydrostatic transmission (35) to the rear wheel differential device (38).

Abstract: 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).

Abstract: A wheeled work vehicle includes a traveling body including front and rear wheels, a traveling drive unit having an engine and a power transmission mechanism, a fuel tank, a work oil tank, and a vehicle frame mounting the front and rear wheels, the traveling drive unit, the fuel tank and the work oil tank. The vehicle includes a swivel base disposed upwardly of the traveling body and mounted via a swivel bearing on the traveling body, a driver's seat mounted on a rear portion of the swivel base, a steering unit disposed forwardly of the driver's seat and a ground-work implement supported on an implement support unit. The vehicle frame includes a front region mounting a front-wheel suspension unit for the front wheels, a rear region mounting a rear-wheel suspension unit for the rear wheels and an intermediate region supporting the swivel bearing.

Abstract: A wheeled work vehicle includes a traveling body including front and rear wheels, a traveling drive unit having an engine and a power transmission mechanism, a dozer unit disposed at least at a front portion of front and rear portions of the body, a fuel tank, a work oil tank, and a vehicle frame mounting said members of the traveling body, a swivel base disposed upwardly of the traveling body and mounted via a swivel bearing on the traveling body to be swivelable for full-angle swiveling movement relative thereto, a driver's seat mounted at a rear portion of the swivel base, a steering unit disposed forwardly of the driver's seat, and a ground-work implement supported on an implement support unit disposed erect on a front portion of the swivel base to be pivotable in the right/left direction.

Abstract: A wheeled work vehicle includes a lower structure (4) supported on the ground by front wheels (2) and rear wheels (3), a swivel base (6) mounted on the lower structure to be swivellable about a swivel shaft disposed between the front wheels and the rear wheels, an operator's seat (7) and an implement support unit (37) which are mounted on the swivel base and an implement (9) supported to the implement support unit. An engine (13) is mounted on the lower structure (4) and the swivel base (6) is disposed at a position lower than upper ends of the front wheels (2) and rear wheels (3). The operator's seat (7) is disposed to project rearward from the swivel base so as to be able to pass above the engine during a swiveling movement of the swivel base. The swivel base (6) is disposed adjacent the engine (13) and lower than an upper end of the engine.

Abstract: A wheeled work vehicle includes a lower structure (4) supported on the ground by front wheels (2) and rear wheels (3), a swivel base (6) mounted on the lower structure to be swivellable about a swivel shaft disposed between the front wheels and the rear wheels, an operator's seat (7) and an implement support unit (37) which are mounted on the swivel base and an implement (9) supported to the implement support unit. An engine (13) is mounted on the lower structure (4) and the swivel base (6) is disposed at a position lower than upper ends of the front wheels (2) and rear wheels (3). The operator's seat (7) is disposed to project rearward from the swivel base so as to be able to pass above the engine during a swiveling movement of the swivel base. The swivel base (6) is disposed adjacent the engine (13) and lower than an upper end of the engine.

Abstract: A TLB includes a tractor body, a reinforcing frame disposed around the tractor body and supported by the tractor body, a pair of right and left side frames for pivotably supporting a pair of right and left booms having a loader bucket attached to distal ends thereof, and braces for connecting the side frames to the tractor body. The side frames are connected to the reinforcing frames by at least two connecting bosses attached to the side frames, at least two connecting bosses attached to the reinforcing frame, and pins inserted through bores of the connected bosses and bores of the connecting bosses. Rear positions of the reinforcing frame are attached to cylindrical portions of rear axle cases by holders rotatable about an axis of the cylindrical portions, and mounting members for connecting the holders to the reinforcing frame, respectively.

Abstract: A reinforcing frame structure for coupling a front loader (6) to a front region of a tractor body (5) and a working implement to a rear region thereof. The reinforcing frame structure (8) includes right and left frames (13) arranged laterally of the tractor body (5) and extending longitudinally thereof, a first cross bar (14) for rigidly interconnecting the right and left frames in rearward positions thereof, a rear connecting mechanism (12) formed integrally with the rearward positions of the right and left frames to be connectable to a rear axle case (18) of the tractor body from below, a working implement coupling mechanism (11) for coupling the working implement, a loader coupling mechanism (9) for coupling the front loader, and a front connecting mechanism (16) for connecting forward regions of the right and left frames to the tractor body.