摘要:
The present invention is a crawler device for a crawler type vehicle, which lowers the vehicle height, decreases the vehicle width, and exhibits superior stability during operation. For this purpose, in a crawler type vehicle having, on right and left sides of either one of front or rear portion, or both of the front and rear portions of a vehicle body (3), crawler devices each having a sprocket (12), an idler (16A) disposed on a truck frame (15), and a crawler belt (11) passed around the sprocket (12) and the idler (16A), the crawler device includes a front end link (181) coupled to a forward part of said truck frame (15) by means of a pin (181D) at a lower end portion thereof and to the side of said vehicle body (3) by means of a pin (181U) at the upper end portion thereof, and a rear end link (182) coupled to a rearward part of said truck frame (15) by means of a pin (182D) at the lower end portion thereof and to said side of said vehicle body (3) at a position behind said front end link (181) by means of a pin (182U) at the upper end portion thereof.
摘要:
A triangular crawler device, which is free from being stumbled and whose crawler belt does not come off from a body of a vehicle while the vehicle travels, includes a track frame (10), having a front idler (15A) and a rear idler (15B) disposed at the front and rear ends thereof respectively; a sprocket (20), rotatably fixed to the track frame (10); links (11, 13), for connecting the body (2) of the vehicle (1) and the track frame (10) together; and a crawler belt (17), wound around the front idler (15A), the rear idler (15B) and the sprocket (20).
摘要:
The present invention is a crawler device for a crawler type vehicle, which lowers the vehicle height, decreases the vehicle width, and exhibits superior stability during operation. For this purpose, in a crawler type vehicle having, on right and left sides of either one of front or rear portion, or both of the front and rear portions of a vehicle body, crawler devices each having a sprocket, an idler disposed on a truck frame, and a crawler belt passed through the sprocket and the idler, the crawler device can include a front end link coupled to a forward part of the truck frame by a pin at a lower end portion thereof and to the side of said vehicle body by a pin at the upper end portion thereof, and can include a rear end link coupled to a rearward part of the truck frame by a pin at the lower end portion thereof and to the side of the vehicle body at a position behind the front end link by a pin at the upper end portion thereof.
摘要:
A cylinder driving system capable of reducing the number of hydraulic devices and the amount of energy loss and an energy regenerating method thereof are provided. To this end, the system includes i) a hydraulic cylinder, ii) a hydraulic pump having three suction/discharge ports of a first port for supplying oil to a bottom chamber of the hydraulic cylinder or draining oil from the bottom chamber, a second port for draining oil from a head chamber of the hydraulic cylinder or supplying oil to the head chamber, and a third port for draining oil from a tank or supplying oil to the tank, the suction rate or the discharge rate in the first port being the sum of the respective discharge rates or suction rates in the second port and the third port, and iii) a driving source for driving the hydraulic pump.
摘要:
A power unit for creating discharge shock waves, which is excellent in performance, reliability, and durability is provided with: a plurality of capacitors (C1-C6), connected in series; first coils (L1, L2, L3) and switches (S1, S2, S3), which are connected to every other one of the capacitors (C1, C3, C5); first resistors (R11, R12, R13), which are connected in series with the first terminal of a power source (1); second resistors (R21, R22, R23), which are connected in series with the second terminal of the power source (1); and a discharge electrode (2), which is provided on the output side of the last capacitor (C6); wherein each switch (S1, S2, S3) has a first main electrode (a), a second main electrode (b), and a triggering electrode (c). The triggering electrode (c) of a first-stage switch (S1) is connected to a triggering voltage source (3), and the first main electrodes (a) and second main electrodes (b) of the switches (S1, S2), other than the final-stage switch (S3), are respectively connected to second capacitors (C71, C72) and the primary sides (d1, d1) of insulating pulse transformers (T1, T2) via serial electric paths. The triggering electrodes (c) and second main electrodes (b) of the switches (S2, S2) other than the first-stage switch (S1) are connected via the secondary sides (d2, d1) of the insulating pulse transformers (T1, T2).
摘要:
The present invention relates to a method of controlling a speed change of a hydraulic driving apparatus for a vehicle and to a speed changing device which provide excellent traveling efficiency and controllability. To this end, the method of controlling a speed change comprises discriminating between at least a powering travel and a braking travel from an accelerating amount (.theta.) and rotational speed of a hydraulic motor (50) for controlling. At the time of the powering travel, a directional control valve (21) can be fully opened in response to the rotational speed (.omega.out) of the hydraulic motor (50) and the accelerating amount (.theta.). In addition, the speed changing device comprises an accelerating amount detection sensor (61a), a motor rotational speed sensor (52) for detecting a vehicle speed (V), and a control device (60) for discriminating, from the accelerating amount (.theta.) and the vehicle speed (V), between the powering travel and the braking travel for providing a control.
摘要:
A sun gear of a first planetary gear train is connected to an input shaft. A carrier of the first planetary gear train is connected to a sun gear of a second planetary gear train and to a first pump/motor. A ring gear of the first planetary gear train is connected to a second pump/motor, and a ring gear of the second planetary gear train is connected to an output shaft. A first clutch is provided for engaging and disengaging a carrier of the second planetary gear train and the ring gear of the first planetary gear train with and from each other, and a second clutch is provided for engaging and disengaging the carrier of the second planetary gear train and a fixed end with and from each other.
摘要:
A sun gear of a first planetary gear train is connected to an input shaft. A carrier 9 of the first planetary gear train is connected to a sun gear of a second planetary gear train and to a first pump/motor. A ring gear of the first planetary gear train is connected to a second pump/motor, and a ring gear of the second planetary gear train is connected to an output shaft. A first clutch is provided for engaging and disengaging a carrier of the second planetary gear train and the ring gear of the first planetary gear train with and from each other, and a second clutch is provided for engaging and disengaging the carrier of the second planetary gear train and a fixed end with and from each other.
摘要:
A sun gear of a first planetary gear train is connected to an input shaft. A carrier 9 of the first planetary gear train is connected to a sun gear of a second planetary gear train and to a first pump/motor. A ring gear of the first planetary gear train is connected to a second pump/motor, and a ring gear of the second planetary gear train is connected to an output shaft. A first clutch is provided for engaging and disengaging a carrier of the second planetary gear train and the ring gear of the first planetary gear train with and from each other, and a second clutch is provided for engaging and disengaging the carrier of the second planetary gear train and a fixed end with and from each other.
摘要:
There is provided a traveling drive apparatus in a working vehicle having a traveling body with front wheels and rear wheels which are adapted to be controlledly driven respectively, characterized in that: the traveling body has mounted thereon an engine, a transmission and a hydraulic pump which are coupled to the engine and a first hydraulic motor that is adapted to be driven by the hydraulic pump whereas a left hand side wheel and a right hand side wheel on one of a front side and a rear side of the traveling body are adapted to be selectively coupled to either of an output side of the engine and an output side of the first hydraulic motor; and a left hand side wheel and a right hand side wheel of the other of the front side and the rear side are mounted on a suspension unit having a second hydraulic motor and a third hydraulic motor which are provided independently of each other and are adapted to be driven by the hydraulic pump and which are respectively coupled to the left hand side wheel and the right hand wheel of the other of the front side and the rear side of the traveling body.