Abstract: An HST used for vehicle with a vehicle body, which includes a hydraulic pump, a hydraulic motor fluidly connected with the hydraulic pump, a housing accommodating the hydraulic pump and the hydraulic motor, a hydraulic pump block supporting the hydraulic pump and a hydraulic motor block separately arranged from the hydraulic pump block and supporting the hydraulic motor. The housing constitutes at least a part of the vehicle body. The hydraulic pump and the hydraulic motor are disposed along the vehicle longitudinal axis via the hydraulic pump block and the hydraulic motor block. The present invention also provides a power transmission arrangement with the HST for vehicle.

Abstract: A driving apparatus is used in a vehicle wherein both the front and rear wheels are driven. The apparatus prevents the steerable wheels from skidding while transmitting power to the steerable wheels when turning the vehicle. The apparatus includes a transmission unit 13 for receiving a rotational output from a main HST 50, a steerable wheel drive shaft 6 and a nonsteerable wheel drive shaft 5 for receiving the rotational output from the transmission unit and delivering the output respectively to an axle for driving the steerable wheels and an axle for driving the nonsteerable wheels, and a differential unit for rotating the drive shaft 6 at an increased speed and the drive shaft 5 at a decreased speed.

Abstract: The invention provides a transmission mechanism for use in a vehicle including a vehicle body having one side toward a first direction along the length thereof and the other side toward a second direction opposite to the first direction, the vehicle comprising a differential gear unit 11, an HST 8 and an engine 7 which are arranged in the vehicle body from the first direction side toward the second direction. A transmission 10 is provided between the differential gear unit 11 and the HST 8, whereby the power of the engine 7 is transmitted through the transmission 10 and input to the HST 8 at the first direction side thereof. The transmission mechanism of simple construction serves to shorten the overall length of the vehicle while preventing the rise of the center of gravity of the vehicle.

Abstract: The present invention provides a transmission for vehicle with an HST interposed in a drive power transmission path that includes: a housing; a center section having a plate-like shape with a first surface and a second surface opposite to the first surface with respect to a drive power transmission direction, and the center section being disposed within the housing; an input shaft extending through the center section; an output shaft disposed parallel with the input shaft and away from the same in a plate surface direction of the center section; a hydraulic pump body supported on the first surface of the center section and operatively connected to the input shaft; a hydraulic motor body supported on the second surface of the center section and being adapted to drive the output shaft upon receiving operational fluid discharged from the hydraulic pump body; a bearing plate fixed within the housing, facing either one of the first and second surfaces of the center section for supporting the input shaft; and an au

Abstract: The present invention provides a vehicle travelling control apparatus for a vehicle with an HST and a mechanical transmission, which are connected in tandem to each other and interposed in a travelling power transmission path between a driving power source and driving wheels. The vehicle travelling control apparatus includes a speed-change control mechanism which in turn includes a signal detection part and a control part for controlling the changing of the output speed of the HST and the shifting operation of the mechanical transmission. The signal detection part includes a load-torque detection means for detecting the load torque with respect to the vehicle. The control part is designed to control the mechanical transmission and the HST based upon the detected results by the load-torque detection means so that where the vehicle lies in a high load torque state, the control part downshifts the mechanical transmission to a lower speed stage, while increasing the output speed of the HST.

Abstract: An axle driving apparatus wherein a hydraulic motor and a hydraulic pump for a hydro-static-transmission are housed in a transmission casing of the axle driving apparatus and a center section for connecting the hydraulic motor and hydraulic pump is disposed in the transmission casing, the center section being fixed at the butt joint portion at the transmission casing, and an oil passage from the hydraulic pump to the hydraulic motor at the center section is bent at a right angle so as to extend the motor shaft in parallel to the axles, so that the rotation direction of the motor shaft conventionally changed by bevel gears is changed by the oil passages in the center section.

Abstract: An axle driving apparatus wherein a hydraulic motor and a hydraulic pump for a hydro-static-transmission are housed in a transmission casing of the axle driving apparatus and a center section for connecting the hydraulic motor and hydraulic pump is disposed in the transmission casing, the center section being fixed at the butt joint portion at the transmission casing, and an oil passage from the hydraulic pump to the hydraulic motor at the center section is bent at a right angle so as to extend the motor shaft in parallel to the axles, so that the rotation direction of the motor shaft conventionally changed by bevel gears is changed by the oil passages in the center section.

Abstract: An axle driving apparatus wherein a hydraulic motor and a hydraulic pump for a hydro-static-transmission are housed in a transmission casing of the axle driving apparatus and a center section for connecting the hydraulic motor and hydraulic pump is disposed in the transmission casing, the center section being fixed at the butt joint portion at the transmission casing, and an oil passage from the hydraulic pump to the hydraulic motor at the center section is bent at a right angle so as to extend the motor shaft in parallel to the axles, so that the rotation direction of the motor shaft conventionally changed by bevel gears is changed by the oil passages in the center section.

Abstract: An axle driving apparatus wherein a hydraulic motor and a hydraulic pump for a hydro-static-transmission are housed in a transmission casing of the axle driving apparatus and a center section for connecting the hydraulic motor and hydraulic pump is disposed in the transmission casing, the center section being fixed at the butt joint portion at the transmission casing, and-an oil passage from the hydraulic pump to the hydraulic motor at the center section is bent at a right angle so as to extend the motor shaft in parallel to the axles, so that the rotation direction of the motor shaft conventionally changed by bevel gears is changed by the oil passages in the center section.

Abstract: An axle driving apparatus wherein a hydraulic motor and a hydraulic pump for a hydro-static-transmission are housed in a transmission casing of the axle driving apparatus and a center section for connecting the hydraulic motor and hydraulic pump is disposed in the transmission casing, the center section being fixed at the butt joint portion at the transmission casing, and an oil passage from the hydraulic pump to the hydraulic motor at the center section is bent at a right angle so as to extend the motor shaft in parallel to the axles, so that the rotation direction of the motor shaft conventionally changed by bevel gears is changed by the oil passages in the center section.

Abstract: An axle driving apparatus wherein a hydraulic motor and a hydraulic pump for a hydro-static-transmission are housed in a transmission casing of the axle driving apparatus and a center section for connecting the hydraulic motor and hydraulic pump is disposed in the transmission casing, the center section being fixed at the butt joint portion at the transmission casing, and an oil passage from the hydraulic pump to the hydraulic motor at the center section is bent at a right angle so as to extend the motor shaft in parallel to the axles, so that the rotation direction of the motor shaft conventionally changed by bevel gears is changed by the oil passages in the center section.

Abstract: An axle driving apparatus wherein a hydraulic motor and a hydraulic pump for a hydro-static-transmission are housed in a transmission casing of the axle driving apparatus and a center section for connecting the hydraulic motor and hydraulic pump is disposed in the transmission casing, the center section being fixed at the butt joint portion at the transmission casing, and an oil passage from the hydraulic pump to the hydraulic motor at the center section is bent at a right angle so as to extend the motor shaft in parallel to the axles, so that the rotation direction of the motor shaft conventionally changed by bevel gears is changed by the oil passages in the center section.

Abstract: In a synchromesh change transmission which is disposed between parallel aligned input and output shafts (12, 13) and includes synchronizer clutches (34, 35) mounted on the input shaft, a neutral brake (45) is disposed on the output shaft in a face-to-face relationship, as viewed in a direction across the shafts, with one (35) of the clutches. The brake comprises a cylindrical member (46), as a stationary brake member, which is engaged by an element (37) of the one clutch so as to be prevented from a rotational displacement. First and second sets of frictional elements (48, 49) of the brake are supported respectively by the output shaft and by the cylindrical member. The brake is adapted to be actuated by a control mechanism (59) for the clutches in a neutral condition of the change transmission preferably through a sliding rod (66) and through a rotatable ring member (54) mounted on the output shaft. A simple and compact arrangement of the brake mechanism is provided.

Abstract: An axle driving apparatus wherein a hydraulic motor and a hydraulic pump for a hydro-static-transmission are housed in a transmission casing of the axle driving apparatus and a center section for connecting the hydraulic motor and hydraulic pump is disposed in the transmission casing, the center section being fixed at the butt joint portion at the transmission casing, and an oil passage from the hydraulic pump to the hydraulic motor at the center section is bent at a right angle so as to extend the motor shaft in parallel to the axles, so that the rotation direction of the motor shaft conventionally changed by bevel gears is changed by the oil passages in the center section.

Abstract: An axle driving apparatus wherein a hydraulic motor and a hydraulic pump for a hydro-static-transmission are housed in a transmission casing of the axle driving apparatus and a center section for connecting the hydraulic motor and hydraulic pump is disposed in the transmission casing, the center section being fixed at the butt Joint portion at the transmission casing, and an oil passage from the hydraulic pump to the hydraulic motor at the center section is bent at a right angle so as to extend the motor shaft in parallel to the axles, so that the rotation direction of the motor shaft conventionally changed by bevel gears is changed by the oil passages in the center section.

Abstract: In a vehicle multi-ratio transmission comprising a plurality of change-speed gear trains, including a backward directional gear train, with which synchronizer clutches are associated for actuating same, two multidisc-type synchronizer clutches (12) are employed for actuating one of forward directional gear trains, which is operated under a heavy condition, and for actuating the backward directional gear train. Cone-type synchronizer clutches (11) are employed for actuating the other gear trains. Seizing of clutch members as well as an unexpected start of the vehicle at a neutral condition of the transmission are well prevented and increase of cost for securing these advantages is suppressed.

Abstract: A brake-operating member (46; 46A; 81) is fixedly carried by a control shaft (36; 79) of a gear-shifting mechanism. The shaft is given, using a change lever (35), selectively one and the other of sliding and rotational movements for gear-selecting and gear-shifting purposes. The operating member is disposed such that it is displaced, when the control shaft is slidingly or rotationally moved to a position where a movable brake-actuating member (48; 79) is engaged with the control shaft through the operating member. The actuating member is moved at the operative position of operating member by the rotational or sliding movement of control shaft so as to actuate a parking brake (28; 71).

Abstract: A bearing support frame (10) is disposed within a rear end portion of a tractor front housing (1) having an open rear end. The frame is secured to internal boss (2c) on a transmission casing (1), which is fastened to the rear of the front housing and has an open front end, and is used for supporting respective one ends of transmission shafts (4, 5, 7, 8) for both of an additional speed change mechanism (6), which is disposed within a rear half of the front housing, and a main speed change mechanism (9) which is disposed within a front half of the transmission casing. An intermediate shaft (17) interposed between the additional and main change mechanisms is also supported by the support frame.The support frame which is preferably composed of front and rear bearing support plates (10A, 10B) facilitates an easy assembly of the change mechanisms.

Abstract: An auxiliary speed change mechanism (10) disposed within a rear portion of a tractor clutch housing (1) is supported by a support frame (11) comprising axially spaced front and rear bearing support plate members (11a, 11b) which are integrally connected by upper and lower connecting plate members (11c, 11d). The change mechanism includes two sets of constant-mesh gears (8, 9, 12, 13) and is operated by a shifter fork (17) which is supported by the support frame through a guide shaft (16). This structure facilitates an easy pre-assembling procedure of the change mechanism which is then installed into the tractor by securing the support frame to a front of a transmission casing (3) to be secured to the rear of the clutch housing. An integral, internal partition wall (1a) is provided in the clutch housing for interrupting lubricant oil for the change mechanism from a main clutch (2) which is disposed within a front end portion of the housing.

Abstract: A fluid-actuated brake assembly for braking a clutch shaft (2) of a fluid-actuated clutch (4) comprises a support plate (9) having an integral fluid cylinder mechanism for operating a pair of brake shoes (10A, 10B). The support plate includes a retaining bore (8) adatped to be fitted on a bearing (7) for receiving the clutch shaft and is secured onto a support wall (14) which holds the bearing. The brake assembly may be preassembled and, then, may be installed into a vehicle like a cassette.