A transmission for a wheel type working vehicle which makes it possible to reduce a size of a transmission mechanism for transmitting a mechanical driving force and a hydraulic driving force from the transmission to a front and rear wheel driving output shaft that is along a vehicle longitudinal dir
A transmission for a wheel type working vehicle which makes it possible to reduce a size of a transmission mechanism for transmitting a mechanical driving force and a hydraulic driving force from the transmission to a front and rear wheel driving output shaft that is along a vehicle longitudinal direction. For this purpose, a bevel gear ( 49) and a cylindrical gear (50) are included at a front and rear wheel driving output shaft (20) for transmitting the mechanical driving force and the hydraulic driving force to front and rear wheels, and the front and rear wheel driving output shaft (20) is connected to an output shaft (21) of a mechanical transmission mechanism (15) via a bevel gear transmission mechanism (22), and is also connected to a hydraulic power transmission mechanism ( 24) connected to a hydraulic motor (17) via a cylindrical gear transmission mechanism (25).
대표청구항▼
What is claimed is: 1. A transmission for a wheel type working vehicle in which a mechanical transmission mechanism for mechanically transmitting power, and a hydraulic power transmission mechanism having a hydraulic pump and a hydraulic motor driven by said hydraulic pump to transmit hydraulic tra
What is claimed is: 1. A transmission for a wheel type working vehicle in which a mechanical transmission mechanism for mechanically transmitting power, and a hydraulic power transmission mechanism having a hydraulic pump and a hydraulic motor driven by said hydraulic pump to transmit hydraulic transmission power are provided side by side as power transmission mechanisms for transmitting power of an engine to front and rear wheels via a front and rear wheel driving output shaft, wherein an output shaft of said mechanical transmission mechanism is provided in a direction orthogonal to a vehicle longitudinal direction; wherein said front and rear wheel driving output shaft and an output shaft of said hydraulic power transmission mechanism are provided in the vehicle longitudinal direction; wherein power from the output shaft of said mechanical transmission mechanism is transmitted to said front and rear wheel driving output shaft via a bevel gear transmission mechanism; and wherein power from the output shaft of said hydraulic power transmission mechanism is transmitted to said front and rear wheel driving output shaft via a cylindrical gear transmission mechanism. 2. The transmission for the wheel type working vehicle according to claim 1, wherein said bevel gear transmission mechanism meshes a bevel gear provided at said front and rear wheel driving output shaft with a bevel gear connected to the output shaft of said mechanical transmission mechanism; and wherein said cylindrical gear transmission mechanism meshes a cylindrical gear provided at said front and rear wheel driving output shaft with a cylindrical gear provided at the output shaft of said hydraulic power transmission mechanism. 3. The transmission for the wheel type working vehicle according to claim 2, further comprising: a mechanical transmission housing, which rotatably houses the output shaft of said mechanical transmission mechanism, and to which said hydraulic pump is mounted; and a power output housing, which rotatably houses said front and rear wheel driving output shaft and the output shaft of said hydraulic power transmission mechanism, and to which said hydraulic motor is mounted, wherein said mechanical transmission housing and said power output housing are constituted to be separate bodies, and are integrally mounted to be attachable and detachable. 4. The transmission for the wheel type working vehicle according to claim 3, wherein said front and rear wheel driving output shaft comprises a rear wheel driving output shaft which has said bevel gear and said cylindrical gear and always transmits rotating power to the rear wheels, and a front wheel driving output shaft which is selectively separated from or connected to said rear wheel driving output shaft via a clutch mechanism, and selectively transmits the rotating power to the front wheels, and wherein said clutch mechanism makes it possible to switch between two drive and four drive. 5. The transmission for the wheel type working vehicle according to claim 4, wherein said rear wheel driving output shaft is fitted to a rotating supporter at a rear wheel side via a first bearing; wherein said front wheel driving output shaft is fitted to a rotating supporter at a front wheel side via a second bearing; and wherein said rotating supporters at the rear wheel side and the front wheel side are respectively mounted to said power output housing to be attachable and detachable. 6. The transmission for the wheel type working vehicle according to claim 1, wherein said hydraulic power transmission mechanism comprises a planetary gear type deceleration mechanism for stopping rotation of a ring gear by engagement of a hydraulic operating clutch and outputting rotating power of said hydraulic motor from a planetary carrier via a sun gear included at an input shaft connected to an output shaft of said hydraulic motor by rotation and revolution of a planetary gear, and the output shaft of said hydraulic power transmission mechanism, which is provided on a same axis as that of said input shaft and integrally connected to said planetary carrier. 7. The transmission for the wheel type working vehicle according to claim 2, wherein said front and rear wheel driving output shaft comprises a rear wheel driving output shaft which has said bevel gear and said cylindrical gear and always transmits rotating power to the rear wheels, and a front wheel driving output shaft which is selectively separated from or connected to said rear wheel driving output shaft via a clutch mechanism, and selectively transmits the rotating power to the front wheels, and wherein said clutch mechanism makes it possible to switch between two drive and four drive. 8. The transmission for the wheel type working vehicle according to claim 7, wherein said rear wheel driving output shaft is fitted to a rotating supporter at a rear wheel side via a first bearing; wherein said front wheel driving output shaft is fitted to a rotating supporter at a front wheel side via a second bearing; and wherein said rotating supporters at the rear wheel side and the front wheel side are respectively mounted to said power output housing to be attachable and detachable. 9. The transmission for the wheel type working vehicle according to claim 2, wherein said hydraulic power transmission mechanism comprises a planetary gear type deceleration mechanism for stopping rotation of a ring gear by engagement of a hydraulic operating clutch and outputting rotating power of said hydraulic motor from a planetary carrier via a sun gear included at an input shaft connected to an output shaft of said hydraulic motor by rotation and revolution of a planetary gear, and the output shaft of said hydraulic power transmission mechanism, which is provided on a same axis as that of said input shaft and integrally connected to said planetary carrier. 10. The transmission for the wheel type working vehicle according to claim 3, wherein said hydraulic power transmission mechanism comprises a planetary gear type deceleration mechanism for stopping rotation of a ring gear by engagement of a hydraulic operating clutch and outputting rotating power of said hydraulic motor from a planetary carrier via a sun gear included at an input shaft connected to an output shaft of said hydraulic motor by rotation and revolution of a planetary gear, and the output shaft of said hydraulic power transmission mechanism, which is provided on a same axis as that of said input shaft and integrally connected to said planetary carrier.
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이 특허에 인용된 특허 (9)
Braud, Marcel-Claude, Automotive vehicle with telescopic load carrying arm.
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