WO2005033554A1 - 走行作業機 - Google Patents
走行作業機 Download PDFInfo
- Publication number
- WO2005033554A1 WO2005033554A1 PCT/JP2004/013116 JP2004013116W WO2005033554A1 WO 2005033554 A1 WO2005033554 A1 WO 2005033554A1 JP 2004013116 W JP2004013116 W JP 2004013116W WO 2005033554 A1 WO2005033554 A1 WO 2005033554A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- shaft
- hydraulic
- transmission
- traveling
- power
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0457—Splash lubrication
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
- B60K17/10—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of fluid gearing
- B60K17/105—Units comprising at least a part of the gearing and a torque-transmitting axle, e.g. transaxles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/28—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or type of power take-off
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H47/00—Combinations of mechanical gearing with fluid clutches or fluid gearing
- F16H47/02—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the volumetric type
- F16H47/04—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the volumetric type the mechanical gearing being of the type with members having orbital motion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0409—Features relating to lubrication or cooling or heating characterised by the problem to increase efficiency, e.g. by reducing splash losses
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/048—Type of gearings to be lubricated, cooled or heated
- F16H57/0482—Gearings with gears having orbital motion
- F16H57/0484—Gearings with gears having orbital motion with variable gear ratio or for reversing rotary motion
Definitions
- the present invention relates to a traveling work machine such as an agricultural work machine such as a tractor or a special work vehicle such as a wheel loader. More specifically, the present invention relates to a hydraulic / mechanical (HMT) transmission The present invention relates to a traveling work machine equipped with a device.
- a traveling work machine such as an agricultural work machine such as a tractor or a special work vehicle such as a wheel loader. More specifically, the present invention relates to a hydraulic / mechanical (HMT) transmission The present invention relates to a traveling work machine equipped with a device.
- HMT hydraulic / mechanical
- HST type hydraulic type
- HMT type hydraulic 'mechanical type
- a pump shaft for input to the hydraulic pump is coaxially connected to a power shaft from an engine.
- the input pump shaft is equipped with a planetary gear mechanism.
- a hydraulic motor rotatably driven by the hydraulic pressure generated by the hydraulic pump is provided below the hydraulic pump, and a motor shaft for output from the hydraulic motor is provided below the input pump shaft. It is arranged on the side to extend parallel to this.
- the gear fixed to the output motor shaft meshes with the external teeth of a carrier rotatably fitted on the input pump shaft of the planetary gear mechanism.
- lubrication of the planetary gear mechanism is performed by immersing a part or the entirety of the planetary gear mechanism in lubricating oil stored in a transmission case.
- Patent Document 1 JP 2001-108060 A
- a sub-transmission mechanism is provided on the output side of the hydraulic-mechanical transmission, The running speed of the hydraulic mechanical transmission is selectively shifted between high-speed running and low-speed running by the auxiliary transmission mechanism.
- the PTO shaft, the power transmission mechanism to the PTO shaft, and the power transmission to the PTO shaft are used.
- the clutch mechanism that turns ON and OFF is assembled to the transmission case.
- the traveling work machine if the PTO shaft is not required for the traveling work machine, the traveling work machine must be manufactured at a factory in a form in which the PTO shaft or the like is not assembled. Must also be used for a traveling work machine that does not have the PTO shaft, etc. attached, and the PTO shaft, etc. cannot be assembled later.
- the transmission force is also transmitted to the transmission case of the traveling work machine by attaching the PTO shaft, a power transmission mechanism to the PTO shaft, and a clutch mechanism for turning on and off the power transmission to the PTO shaft to the transmission case. Due to the configuration of assembling the PTO shaft, there is a problem that maintenance such as disassembly repair and parts replacement for the PTO shaft and the like is troublesome.
- the PTO shaft can freely rotate in either forward or reverse manner when the power transmission to the PTO shaft is interrupted by a clutch mechanism. Can easily perform the work of connecting the drive shafts, but on the other hand,
- a brake mechanism is provided on the PTO shaft so as to brake its rotation, so that the inertial rotation after the power transmission to the PTO shaft is cut off is stopped. In such a case, stop the rotation drive of the PTO shaft.
- the operation is troublesome, and the force of the PTO shaft is reduced by the brake mechanism in a state where the rotation of the PTO shaft is stopped. On the contrary, it cannot be rotated in the way of slipping, so it is locked as
- a transmission case is mounted on a traveling body supported by traveling means such as wheels and having an engine mounted thereon, and a hydraulic pump and a hydraulic motor are mounted on the transmission case.
- a traveling working machine including a hydraulic mechanical transmission for shifting the power of the engine force and transmitting the power to the traveling means by a combination of a powerful hydraulic transmission mechanism and a planetary gear mechanism.
- the pump shaft for the input to the hydraulic pump, the motor shaft for the output from the hydraulic motor, and the transmission gears provided on each of these shafts are provided with lubricating oil stored in the lower part of the transmission case. It is characterized by being located above the oil level.
- the pump shaft for input to the hydraulic pump, the motor shaft for output from the hydraulic motor, and the transmission gears provided on each of these shafts are provided at the lower part in the transmission case.
- the transmission gears do not stir the lubricating oil even during high-speed driving, so that the hydraulic motor has a large capacity and an increased weight by increasing its capacity.
- the power loss due to the rotational stirring resistance of each of the transmission gears can be significantly reduced without causing the power transmission, so that the power can be transmitted with high efficiency.
- the hydraulic pump and the hydraulic motor are housed in a transmission case attached to an outer surface of the mission case, and are integrally united. These hydraulic pumps and hydraulic motors can be reliably protected, and the assemblability to the mission case can be improved.
- the planetary gear mechanism is located above the oil level of the lubricating oil in the transmission case, and is located in the transmission case.
- at least one of the outer peripheral lower parts is immersed in the lubricating oil, and the lubricating oil that springs up by the rotation of the one gear is applied to the planetary gear mechanism.
- the structure can be configured to be close to the power.
- annular groove extending in the circumferential direction is provided on the outer peripheral surface of a carrier that supports each planetary gear in the planetary gear mechanism while being rotatably fitted on a support shaft, and the annular groove is provided.
- the lubricating property of the planetary gear mechanism can be further improved by providing an oil passage that opens into the annular groove in the planetary gear mechanism while the upper part of the one gear is viewed inside.
- a transmission case is mounted on a traveling body supported by traveling means such as wheels and mounted with an engine, and the engine is mounted on the transmission case.
- a hydraulic transmission for transmitting the power from the vehicle to the traveling means, and a PTO shaft for transmitting power to various working machines mounted on the traveling machine in the transmission case.
- a bracket is mounted on the transmission case in a detachable manner so as to cover a window formed in the transmission case with the bracket, and the PTO shaft is mounted on the bracket.
- the bracket body is also supported so as to protrude, and the bracket body is also equipped with a power input part to the PTO shaft and a power input / output operation to the PTO shaft.
- the pitch mechanism is characterized in Rukoto.
- the PTO shaft, the power input portion to the PTO shaft, and the clutch mechanism for the PTO shaft are assembled into one bracket body as one PTO shaft unit, and It is possible to replace the traveling work machine without the PTO shaft with the one with the PTO shaft, and then replace the traveling work machine with the PTO shaft with the PTO shaft. It is extremely easy and quick to change to the specification without the above by installing or removing the one PTO shaft unit. Maintenance such as repair and parts replacement for the PTO shaft is also easy. Likewise By installing or removing the one unit, extremely simple and quick operation is possible.
- the power input portion when the bracket body is attached to the transmission case, the power input portion may be provided with a shaft coupling for inserting and coupling a power transmission shaft from the engine. .
- the power transmission shaft on the transmission case side can be connected to the power input portion to the ⁇ shaft at the same time when the bracket body is mounted on the transmission case. Since the power input section of the bracket can be attached to the transmission case while being connected to the power transmission shaft on the transmission case side, the workability of mounting or removing the single ⁇ ⁇ -axis unit to or from the transmission case is greatly improved. Can be improved.
- a transmission case is mounted on a traveling body supported by traveling means such as wheels and equipped with an engine, and a hydraulic pump and a hydraulic motor are mounted on the transmission case.
- a traveling work machine including a hydraulic mechanical transmission that changes the power of the engine force by a combination of a hydraulic hydraulic transmission mechanism and a planetary gear mechanism and transmits the power to the traveling means.
- the transmission case is provided with a ⁇ shaft for transmitting power to various working machines mounted on the traveling body, and a clutch mechanism for turning on / off the power transmission from the engine to the ⁇ shaft is provided. Further, the transmission case is provided with a brake mechanism for braking the rotation of the PTO shaft by pressing the non-rotating brake body against the non-rotating brake body rotating together with the PTO shaft.
- the brake mechanism is connected to the clutch mechanism in a non-braking manner in conjunction with the power transmission ON operation of the clutch mechanism, and the brake mechanism is operated in a non-braking manner in conjunction with the power transmission OFF operation of the clutch mechanism.
- the mechanism is characterized by being associated with actuation of the brake.
- the rotational drive of the PTO shaft is stopped by applying the braking while the power transmission to the PTO shaft is OFF, and the rotational drive of the PTO shaft is released with the brake released. Since the operation can be performed by one operation, the operation of the PTO axis can be simplified.
- the non-rotation-side brake in the brake mechanism is configured to rotate independently, and the PTO shaft in the non-rotation-side brake is rotationally driven by the non-rotation-side brake.
- the rotation of the PTO shaft in the non-rotation-side braking body is prevented by rotating the PTO shaft.
- the PTO shaft can be arbitrarily rotated in the direction opposite to the direction in which the PTO shaft is rotationally driven in a state where the rotation is stopped by braking the PTO shaft.
- the drive shafts on the working machine are connected, alignment in the rotational direction between the two shafts can be extremely easily performed, thereby improving workability.
- the clutch mechanism and the brake mechanism are provided so as to be fitted on one shaft, and the clutch mechanism is provided between the clutch mechanism and the brake mechanism.
- an operation mechanism is provided which is configured to operate the brake mechanism non-braking at the same time as power transmission ON and to operate the clutch mechanism to power transmission ON and to brake the brake mechanism simultaneously. be able to.
- the clutch mechanism and the brake mechanism can be provided on one shaft, so that the size and weight can be significantly reduced as compared with the case where the clutch mechanism and the brake mechanism are separately provided.
- a dagger can be planned.
- a transmission case is mounted on a traveling body supported by traveling means such as wheels and mounted with an engine, and a hydraulic pump and a hydraulic pump are mounted on the transmission case.
- a traveling work machine including a hydraulic mechanical transmission device that varies the power from the engine by a combination of a hydraulic transmission mechanism that generates a hydraulic motor and a planetary gear mechanism and transmits the power to the traveling means.
- the hydraulic pressure from the discharge port of the hydraulic pump is simultaneously supplied to both axial piston motors via a hydraulic circuit, so that the two axial piston motors discharge the two axial piston motors.
- the rotary pump is driven so that the hydraulic pressure from the outlet is returned to the hydraulic pump via the hydraulic circuit.
- the swash plate of one of the axial piston motors is operated at the maximum inclination angle, and the swash plate of the other axial piston motor is adjusted to the position where the inclination angle is zero and the minute inclination angle.
- the motor is operated to the minimum inclination angle including the axial piston motor, one of the two axial piston motors is driven mainly by hydraulic pressure from the hydraulic pump, and the motor output side of the two axial piston motors is the highest. Since the rotation speed is reached, the traveling work machine can be shifted to high-speed traveling.
- the motor output side of each of the axial piston motors can be continuously changed to an arbitrary rotation speed, so that the traveling speed of the traveling work machine is reduced. Since the speed can be changed steplessly in a wide range of speed ratio between high-speed running and the low-speed running, the conventional auxiliary transmission mechanism can be omitted in some cases, and the structure is greatly simplified, and The size and weight can be reduced, and the speed change operation can be greatly simplified.
- a cover plate for closing a punched window formed in the mission case is detachably mounted on the mission case.
- the hydraulic pump and one axial piston motor of the two axial piston motors are mounted on the front surface and the other axial piston motor on the back surface, by attaching and removing the cover plate to and from the transmission case, Since the hydraulic pump and the two axial piston motors can be assembled and disassembled with respect to the transmission case, the number of operations required for these can be reduced and the maintainability can be improved.
- FIG. 1 is a side view showing a traveling work machine according to an embodiment of the present invention.
- FIG. 2 is a plan view of the traveling work machine.
- FIG. 3 is an enlarged view of a main part in FIG. 2.
- FIG. 4 is a sectional view taken along the line IV-IV in FIG.
- FIG. 5 is a sectional view taken along line VV of FIG. 3.
- FIG. 6 is a plan view showing a power transmission system from an engine to wheels.
- FIG. 7 is a longitudinal sectional front view of a main part of the mission case.
- FIG. 8 is a side view as viewed from VIII-VIII in FIG.
- FIG. 9 An enlarged view of a main part in FIG. 7.
- FIG. 10 is a sectional view taken along line XX of FIG. 7.
- FIG. 11 is an exploded view of FIG.
- FIG. 12 is a diagram showing a modified example of FIG.
- FIG. 13 is an exploded view of FIG.
- FIG. 14 is a vertical sectional front view of the PTO shaft unit mechanism.
- FIG. 15 is a sectional view taken along the line XV—XV in FIG.
- FIG. 16 is a view showing a modification of the hydraulic transmission mechanism.
- FIGs. 1 and 2 show a tractor 1, which supports a traveling body 2 with a pair of left and right front wheels 3 and a pair of left and right rear wheels 4 as well.
- the vehicle By driving the rear wheels 4 and the front wheels 3 by the engine 5 mounted on the vehicle, the vehicle is driven to move forward and backward.
- a steering wheel 7 for removing force by moving the wheels 3 left and right, and a rear portion of the traveling body 2 is provided with an appropriate speed change of the rotation of the engine 5 so that the two rear wheels are rotated.
- a transmission case 8 for transmission to wheels 4 and both front wheels 3 is mounted.
- the two rear wheels 4 are detachably mounted on the transmission case 8 so as to protrude outward from the transmission case 8 on both left and right outer surface sides of the transmission case 8, and
- An axle 4a for transmitting power to the rear wheels 4 is mounted in the axle case 9 via a gear case 10 which is attached to the outer end of the axle case 9 so as to extend rearward. Inserted!
- the traveling body 2 is provided with a pair of left and right steel plate body frames 11 extending in the traveling direction as a set of two pieces, and the engine 5 is disposed at a front portion between the two body frames 11.
- the transmission case 8 is disposed at a rear portion between the two body frames 11, and the left and right outer surface forces of the transmission case 8 project from the both axle case 9;
- the transmission case 8 is attached to both the body frames 11 by fastening both the gear case 10 extending rearward from the two body frames 11 and the Bonoreto 12, 13 to the body frame 11.
- the wheel loads acting on the rear wheels 3 can be directly supported by the two body frames 11 without the intervention of the transmission case 8.
- a pair of upper and lower stays 14 and 15 are connected between the rear ends of the two body frames 11, and an upward hook 16 is provided below the rear ends of the two body frames 11.
- a pin hole 17 is formed in the upper part of the rear end, and a hitch table 18 is detachably erected on the hook 16 and the pin hole 17 so as to be detachable.
- a backhoe 19 is installed to carry out earthwork such as drilling.
- a plow mounted on the traveling machine body 2 is mounted on the rear upper surface of the transmission case 8.
- a hydraulic lifting mechanism 20 for a working machine for raising and lowering various working machines (not shown) such as a turning machine is provided.
- a gear case 21 for covering the drive shaft 5a on the engine 5 side is mounted on the rear side of the engine 5, and a lower part of the gear case 21 is provided inside the gear case 21 from the drive shaft 5a.
- a main drive shaft 23 that is transmitted through a gear train mechanism 22 is provided so as to protrude rearward.
- a rear side surface of the gear case 21 is provided with a hydraulic lifting mechanism 20 for the working machine.
- a working hydraulic pump 24 for supplying hydraulic pressure is mounted so as to be detachably connected directly to the drive shaft 5a.
- the hydraulic mechanical transmission mechanism includes a hydraulic stepless transmission comprising a transmission hydraulic pump 27 and a transmission hydraulic motor 28 operated by the hydraulic pump 27, as described below. (HST) 29 and a planetary gear mechanism 30.
- a front plate 31 that covers the front surface of the transmission case 8 is detachably provided on the front surface of the transmission case 8, and a transmission case 33 is detachably mounted on the front upper portion of the front plate 31 with the cover plate 32 interposed therebetween. After being mounted, the hydraulic pump 27 and the hydraulic motor 28 are provided in the transmission case 33.
- a hydraulic closed circuit (not shown) that supplies the hydraulic pressure from the hydraulic pump 27 to the hydraulic motor 28 and returns the hydraulic pressure discharged from the hydraulic motor 28 to the hydraulic pump 27. ) Is formed, and by increasing or decreasing the amount of hydraulic pressure supplied from the hydraulic pump 27 to the hydraulic motor 28, the rotational speed of the hydraulic motor 28 is continuously changed, while the supply direction of the hydraulic pressure is changed. By changing the rotation direction of the hydraulic motor 28 , Is configured to switch in the forward or reverse direction.
- the shaft 36 is provided so that the sun gear shaft 36 is located below the pump shaft 34 and the motor shaft 35.
- the hydraulic'mechanical transmission divides the power transmitted to the input shaft 25 into a sun gear shaft 36 of the planetary gear mechanism 30 and a pump shaft 34 for input to the hydraulic pump 27.
- the split power to the shaft 36 and the power from the hydraulic motor 28 via the output motor shaft 35 are combined and transmitted to the gear-type subtransmission mechanism 26, where the gears are shifted step by step, and
- the wheels 2 and 3 are configured to rotate.
- a gear 37 fixed to the input shaft 25 is combined with a transmission gear 38 loosely fitted to the front end of the sun gear shaft 36 via a bearing.
- a plurality of planetary gears 40 (three in the embodiment) are rotatably supported on a carrier 39 fixed to one surface of the transmission gear 38.
- the sun gear 41 provided on the outer periphery of the sun gear shaft 36 is combined with all the planetary gears 40 described above.
- the ring gear 42 having the inner teeth on the inner peripheral surface and the outer teeth on the outer peripheral surface is rotatable via a bearing on the sun gear shaft 36 so that the inner teeth mesh with the plurality of planetary gears 40, respectively. It is fitted. External teeth on the outer peripheral surface of the ring gear 42 mesh with a pump gear 43 fixed to a pump shaft 34 for input to the hydraulic pump 27.
- a transmission gear 43 fixed to a portion of the sun gear shaft 36 behind the ring gear 42 is combined with a motor gear 44 fixed to a motor shaft 35 for output from the hydraulic motor 28.
- a rear wheel propulsion shaft 45 is pivotally supported, and a pinion gear 46 at the rear end of the propulsion shaft 45 is connected to a conventional well-known differential gear for the rear wheels 4.
- a pinion gear 46 at the rear end of the propulsion shaft 45 is connected to a conventional well-known differential gear for the rear wheels 4.
- the front end of the front wheel propulsion shaft 50 is connected to a gear 51 rotatably fitted on the front wheel propulsion shaft 50 supported in the transmission case 8.
- a conventional well-known differential gear mechanism 52 is connected via a telescopic power transmission shaft 53 having universal shaft joints at both ends, and a clutch 54 is mounted on the front wheel propulsion shaft 50.
- the clutch 54 is operated to fix the gear 51 to the propulsion shaft 54, the front wheels 3 are driven to rotate by the rear wheel propulsion shaft 54, and the clutch 54 is When the gear 51 is operated so as not to be fixed to the propulsion shaft 54, the front wheels 3 are not driven to rotate.
- one of the two transmission gears 55, 56 rotatably fitted on the rear wheel propulsion shaft 45 is provided with one small-diameter transmission gear 55 on the sun gear shaft 36.
- the other large-diameter transmission gear 56 is engaged with the fixed gear 57, and the other large-diameter transmission gear 56 is engaged with the gear 58 fixed on the sun gear 36, respectively.
- the transmission gear 55 is operated so as to be fixed to the propulsion shaft 45, the propulsion shaft 45 is rotated at a high speed, and the clutch 59 is connected to the other large-diameter variable gear 56 by the clutch 59.
- the propulsion shaft 45 When the propulsion shaft 45 is operated so as to be fixed, the propulsion shaft 45 is rotated at a low speed, and the clutch 59 is fixed to the propulsion shaft 45 in the intermediate position, that is, both of the transmission gears 55 and 56. However, when operated in a neutral manner, rotation to the propulsion shaft 45 is performed.
- the transmission is cut off, and between the high-speed rotation by the one small-diameter transmission gear 55 and the low-speed rotation by the other large-diameter transmission gear 56, the hydraulic stepless transmission (HST) 29 is used. It is configured to continuously change gears.
- the planetary gear mechanism 30 is located at a position higher than the oil level S of the lubricating oil stored in the transmission case 8 in the transmission case 8.
- the gear 49 fixed on the rear wheel propulsion shaft 45 is configured to rotate with a part of the lower part of the outer periphery immersed in the lubricating oil surface S.
- the transmission gear 38 to the planetary gear mechanism 30 is fitted and fixed to a carrier 39 of the planetary gear mechanism 30, so that the transmission gear 38 and the support shaft of the carrier 39 of the planetary gear 40.
- An annular groove 60 extending in the circumferential direction is formed between the flange portion 39a to which 40a is attached, and an upper portion of the gear 49 on the rear wheel propulsion shaft 45 is formed in the annular groove 60 so as to be seen. .
- Each planetary gear 40 and its supporting shaft 40a in the planetary gear mechanism 30 are provided with a front end.
- An oil passage 61 communicating the inside of the annular groove 60 with the inner and outer peripheries of the planetary gears 40 is formed.
- the rear wheel propulsion shaft 45 is provided so as to partition the front plate 31 of the transmission case 8 and the rear wheel differential gear mechanism 47 in the transmission case 8. It is pivotally supported to the partition plate 62 via ball bearings 63 and 64.
- the rear wheel propulsion shaft 45 is configured to be assembled and disassembled by attaching and detaching the front plate 31 to and from the mission case 8.
- the transmission case 8 can be used in common for both low horsepower and high horsepower. It is configured to be able to.
- a PTO shaft provided with a PTO shaft 65 for transmitting power to a work machine (not shown) such as a tiller connected to the rear of the traveling machine body 2 is provided on a rear side surface 8a of the transmission case 8.
- the unit mechanism 66 is detachably mounted.
- the PTO shaft unit mechanism 66 includes a bracket body 67 formed in a front and rear box shape, and the bracket body 67 is attached to the rear surface 8a of the transmission case 8. Then, a plurality of bolts 68 are attached so as to be detachable so as to cover the opening 8b formed in the rear side surface 8a.
- the PTO shaft 65 is rotatably supported on the bracket body 67 such that the PTO shaft 65 penetrates a rear plate 67a of the bracket body 67 and projects rearward.
- An input shaft 69 composed of a socket-like shaft joint 68 having a spline groove inside the front plate 67b of the bracket body 67, that is, the side plate 67b inside the transmission case 8, is made parallel to the PTO shaft 65.
- a power transmission for a PTO shaft which is disposed in the transmission case 8 so as to extend rearward from the input shaft 25 to the socket-like shaft joint 68 of the input shaft 69 so as to extend freely.
- the rear end of the shaft 70 is configured to be inserted and connected at the same time when the bracket body 67 is attached to the transmission case 8.
- a clutch shaft 71 extending rearward on the same axis as the input shaft 69 is provided between the rear plate 67a and the front plate 67b of the bracket body 67, and a rear end of the input shaft 69 and the bracket are provided.
- the pinion gear 72 on the clutch shaft 71 is engaged with the gear 73 on the PTO shaft 65, and is rotatably supported by the rear plate 67a of the body 67.
- the counterclockwise rotation indicated by arrow A1 in FIG. 15 viewed from the rear in FIG. 5 is transmitted to the PTO shaft 65, and the clockwise direction indicated by arrow A2 in FIG.
- a clutch housing 74 is fitted to the clutch shaft 71, and a multi-plate clutch 75 is provided between the clutch housing 74 and the input shaft 69. Insert the piston 74 into the cylinder chamber 76 inside the clutch housing 74 By tightening by the forward movement of the ton 77 against the return spring 78 in the direction of the input shaft 69, power is transmitted from the input shaft 69 to the clutch shaft 71, The transmission of power from the input shaft 69 to the clutch shaft 71 is interrupted by loosening the tightening of the multi-plate clutch 75 due to the backward movement of the ton 77 by the return spring 78.
- a hydraulic pump 80 for pumping lubricating oil in the transmission case 8 from a strainer 79 is attached to the front plate 67b of the bracket body 67, that is, the side surface inside the transmission case 8,
- a gear 82 on a pump shaft 81 in the hydraulic pump 80 With a gear 83 on the input shaft 69, the hydraulic pump 80 is driven to rotate, and the hydraulic pressure from the discharge side of the hydraulic pump 80 is reduced.
- the oil is supplied to a hydraulic switching valve 84 provided on a rear plate 67a of the bracket body 67 through a hydraulic pipeline 85, and the hydraulic switching valve 84 transfers the hydraulic pressure from the hydraulic pump 80 into the clutch housing 74.
- the oil is supplied to the cylinder chamber 76 through a hydraulic passage 86 formed in the clutch shaft 71, while the rear chamber of the piston 76 is supplied to a hydraulic passage 87 formed in the clutch shaft 71. And a state in which the supply of hydraulic pressure to the cylinder chamber 76 is stopped to open both the cylinder chamber 76 and the rear chamber of the biston 77.
- the clutch shaft 71 is provided with a multi-plate type brake mechanism 89 that is interlocked with the reciprocating motion of the piston 77 via an interlocking pin 88 that penetrates the clutch housing 74 in the axial direction.
- the brake mechanism 89 includes a multi-plate rotating side brake 90 fitted on the clutch shaft 71 so as to rotate together with the clutch housing 74, and is rotatably fitted on the clutch shaft 71.
- the power transmission of the multi-plate clutch 75 is turned off by opening the chamber 76 and retreating the piston 77 by the return spring 78, the rotation-side brake body 90 is disengaged by the return spring 78 by the non-rotation.
- the means 93 includes a hook-like body 95 having a base end pivotally attached to a bracket body 67 by a pin 94, and this hook-like body 95 is connected to the non-rotation-side braking body 91. And a spring body 96 that urges rotation in the direction of force.
- a cutting claw 98 having an inwardly inclined surface 97 is provided on the outer peripheral surface of the non-rotation-side braking body 91, and the hook-like body 95 is attached to the cutting claw 98.
- the engagement by the biasing force of the spring body 96 prevents the non-rotation side braking body 91 from rotating in the direction of arrow A1, that is, the rotation of the PTO shaft 65 in the direction of arrow A2.
- the non-rotation-side braking body 91 is moved in the direction opposite to the arrow A1 (the direction of the dotted arrow B1), that is, in the direction opposite to the direction of the arrow A2 that drives the PTO shaft 65 to rotate (the direction of the dotted arrow B2).
- the hook-like body 95 rotates outward against the spring body 96 by the inclined surface 97, and comes off from the notch claw 98 as shown by a two-dot chain line in FIG.
- the PTO shaft unit mechanism 66 includes a bracket 67 configured to close the opening 8b formed in the transmission case 8, and the PTO shaft 65 is mounted on the bracket 67.
- the bracket body 67 is provided with a hydraulic multi-disc clutch 75 for the PTO shaft 65 and a hydraulic pump 80 for the hydraulic multi-disc clutch 75 and a hydraulic switching valve 84 for the hydraulic pump 80.
- the PTO shaft 65 can rotate in the direction opposite to the direction of the arrow A2 (the direction of the dotted arrow B2) that drives the PTO shaft 65 to rotate. Therefore, when a drive shaft on the working machine side is connected to the PTO shaft 65, positioning in the rotational direction between the two shafts can be performed easily, reliably, and accurately.
- FIG. 16 shows another embodiment.
- the hydraulic transmission mechanism is constituted by one hydraulic pump 27 ⁇ for shifting and two swash plate type axial piston motors 28 ', 28 operated by the hydraulic pump 27'.
- a cover plate 100 for closing the cutout window 99 formed in the front plate 31 at the front of the transmission case 8 is detachably attached by fastening bolts 101, and the front and back of the cover plate 100
- the hydraulic pump 27 ' is mounted on the opposite surface of the transmission case 8 so that the input shaft 102 of the hydraulic pump 27' extends through the cover plate 100 and protrudes into the transmission case 8.
- the plate 100 is supported so as to penetrate one motor output shaft 103.
- one of the axial piston motors 28 ', 28 is fitted with the motor output shaft 103.
- the other of the two axial piston motors 28 ′ and 28, the other axial piston motor 28 is fitted to the motor output shaft 103 on the back surface of the cover plate 100 on the side of the transmission case 8. And attach it.
- the axial piston motors 28 ′, 28 are connected in series with one motor output shaft 103 penetrating the cover plate 100.
- the hydraulic pressure of the discharge rocker of the hydraulic pump 27 ′ is supplied to each of the cylinders of the axial piston motors 28 ′ and 28, and the axial piston motors
- a hydraulic circuit is provided as a hydraulic passage that returns the hydraulic pressure of the discharge rocker of each cylinder at the hydraulic pump 27 ⁇ to the hydraulic pump 27 ⁇ .
- reference numeral 104 denotes a cover casing for the one axial piston motor 28 ', and the pump casing of the hydraulic pump 27' may be integrally formed on the cover casing 104. Good!
- the input shaft 102 of the hydraulic pump 27 ' is removably connected to the input pump shaft 34 via a shaft coupling 104, while the two axial piston motors are connected.
- the motor output shafts 103 at 28 'and 28 are detachably connected to the output motor shaft 35 via a shaft joint 105.
- the hydraulic pump 27 ' is rotationally driven by the power transmitted from the engine 5, and the hydraulic pressure from the discharge port of the hydraulic pump 27' is transmitted to both axial piston motors 28 through a hydraulic circuit. , 28 at the same time.
- the stone motors 28, 28 are rotationally driven such that the hydraulic pressure from the discharge ports of the axial piston motors 28, 28 is returned to the hydraulic pump 2 via a hydraulic circuit.
- the swash plate 28 of one of the axial piston motors 28 ', 28 is operated at the maximum inclination angle 0, while the other axial piston motor 28' is operated.
- the swash plate 28a "of the motor 28 is operated to the position where the inclination angle is zero and to the minimum inclination angle including the minute inclination angle
- one of the axial piston motors 28 'and 28' is driven by the axial piston motor 28 '.
- the traveling work machine 1 can be steplessly shifted to an arbitrary traveling speed between the high-speed traveling and the low-speed traveling.
- the traveling speed of the traveling work machine 1 can be steplessly changed in a wide speed ratio range between the high-speed traveling and the low-speed traveling.
- the auxiliary transmission mechanism 26 provided in the transmission case 8 can be omitted.
- a cover plate 100 is removably mounted on the mission case 8 so as to cover a cutout window 99 formed in the mission case 8, and the hydraulic pump 27 ', The two axial piston motors 28 ', 28 and their motor output shaft 103 are mounted. And a hydraulic circuit for connecting the hydraulic pump 27 'and the two axial piston motors 28 ⁇ , 28 "to each other is provided in the cover plate 100. By attaching and detaching the cover plate 100, the hydraulic pump 27 ', the two axial piston motors 28', 28, and the hydraulic circuit therebetween can be assembled and disassembled with respect to the transmission case 8.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Arrangement And Driving Of Transmission Devices (AREA)
- Motor Power Transmission Devices (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/574,251 US7357745B2 (en) | 2003-10-01 | 2004-09-09 | Travel working machine |
Applications Claiming Priority (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003343109A JP2005106232A (ja) | 2003-10-01 | 2003-10-01 | 走行作業機の走行変速機構における潤滑装置 |
JP2003-343109 | 2003-10-01 | ||
JP2004167662A JP4575714B2 (ja) | 2004-06-04 | 2004-06-04 | 走行作業機 |
JP2004-167662 | 2004-06-04 | ||
JP2004207635A JP4750385B2 (ja) | 2004-07-14 | 2004-07-14 | 走行作業機における作業機への動力伝達装置 |
JP2004-207635 | 2004-07-14 | ||
JP2004208956A JP2006027432A (ja) | 2004-07-15 | 2004-07-15 | 走行作業機における油圧式走行変速装置 |
JP2004-208956 | 2004-07-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005033554A1 true WO2005033554A1 (ja) | 2005-04-14 |
Family
ID=34426995
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/013116 WO2005033554A1 (ja) | 2003-10-01 | 2004-09-09 | 走行作業機 |
Country Status (2)
Country | Link |
---|---|
US (1) | US7357745B2 (ja) |
WO (1) | WO2005033554A1 (ja) |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4670685B2 (ja) * | 2006-03-03 | 2011-04-13 | トヨタ自動車株式会社 | 動力伝達装置 |
JP4820713B2 (ja) * | 2006-08-10 | 2011-11-24 | 住友重機械工業株式会社 | 減速機 |
WO2008151527A1 (fr) * | 2007-06-11 | 2008-12-18 | Hongjian Zhao | Dispositif de transmission combinée mécanique-hydraulique |
US7684918B2 (en) * | 2007-07-12 | 2010-03-23 | Deere & Company | PTO brake control system |
DE102007051244A1 (de) * | 2007-10-26 | 2009-04-30 | Deere & Company, Moline | Getriebeanordnung |
CN102084156B (zh) | 2008-07-07 | 2015-08-19 | 迪尔公司 | 用于具有附装液压流体泵的作业机械的变速器 |
ITPD20080218A1 (it) * | 2008-07-23 | 2010-01-24 | Faresin Ind S P A | Struttura di macchina operatrice |
US8864619B2 (en) * | 2008-10-16 | 2014-10-21 | Parker-Hannifin Corporation | Planetary power take off device |
SE533695C2 (sv) * | 2009-04-20 | 2010-12-07 | Scania Cv Ab | Motorfordon innefattande en transmissionsanordning med kraftuttagsaxel |
US8744707B2 (en) | 2011-03-31 | 2014-06-03 | Caterpillar Inc. | CVT control using state space based gain scheduling |
GB201218237D0 (en) * | 2012-10-11 | 2012-11-28 | Agco Int Gmbh | PTO drivelines |
WO2014069646A1 (ja) * | 2012-11-05 | 2014-05-08 | 住友重機械工業株式会社 | 単純遊星減速装置 |
CN103410442A (zh) * | 2013-08-26 | 2013-11-27 | 中煤科工集团重庆研究院 | 煤矿用高转速全液压履带式钻机 |
CN103511598B (zh) * | 2013-10-12 | 2016-01-20 | 第一拖拉机股份有限公司 | 大功率拖拉机无级变速箱 |
CN103573928B (zh) * | 2013-11-12 | 2016-05-04 | 湖南中联重科车桥有限公司 | 一种减速器、轴承式行星齿轮、太阳轮 |
CN104373533B (zh) * | 2014-10-28 | 2017-06-13 | 成都星海科机械设备有限公司 | 一种齿轮分配箱 |
CN104455302B (zh) * | 2014-11-18 | 2017-02-22 | 绍兴前进齿轮箱有限公司 | 一种内置液压湿式离合器的农机齿轮箱 |
CN105351505A (zh) * | 2015-11-19 | 2016-02-24 | 陕西法士特汽车传动集团有限责任公司 | 一种带贯通轴取力器的变速器润滑系统 |
CN108412999A (zh) * | 2018-05-03 | 2018-08-17 | 宁波新宏液压有限公司 | 一种液压三轮铣槽机传动系统 |
EP4077014A1 (en) * | 2019-12-19 | 2022-10-26 | AGCO International GmbH | Method of operating an agricultural vehicle and a transmission arrangement for an agricultural vehicle |
DE102020114692A1 (de) * | 2020-06-03 | 2021-12-09 | Claas Industrietechnik Gmbh | Landwirtschaftliche Arbeitsmaschine |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5689723U (ja) * | 1979-12-13 | 1981-07-17 | ||
JPH06297971A (ja) * | 1993-04-19 | 1994-10-25 | Kubota Corp | 農作業車の伝動構造 |
JPH07144550A (ja) * | 1993-11-25 | 1995-06-06 | Kanzaki Kokyukoki Mfg Co Ltd | 作業車用四輪駆動トランスミッション |
JPH08338506A (ja) * | 1995-06-09 | 1996-12-24 | Komatsu Ltd | 油圧機械式変速装置 |
JPH10272941A (ja) * | 1997-01-30 | 1998-10-13 | Uchida Yuatsu Kiki Kogyo Kk | 車両走行用静流体圧伝動装置 |
JP2000130568A (ja) * | 1998-10-26 | 2000-05-12 | Yanmar Diesel Engine Co Ltd | 遊星歯車機構におけるプラネタリーギア軸受部への注油構造 |
JP2000219056A (ja) * | 1999-01-29 | 2000-08-08 | Yanmar Diesel Engine Co Ltd | 油圧式無段変速機 |
JP2001108060A (ja) * | 1999-10-06 | 2001-04-20 | Yanmar Diesel Engine Co Ltd | 油圧−機械式変速装置 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2521239A (en) * | 1947-07-26 | 1950-09-05 | Gen Motors Corp | Marine gear |
US2743789A (en) * | 1953-08-13 | 1956-05-01 | Int Harvester Co | Lubrication system for tractor changespeed gear transmission |
US3093013A (en) * | 1959-03-11 | 1963-06-11 | Daimler Benz Ag | Reversible transmission, particularly for maritime purposes |
US3216284A (en) * | 1963-06-21 | 1965-11-09 | Baker Dev Corp | Transmission |
JPS53134163A (en) * | 1977-04-27 | 1978-11-22 | Toyota Motor Corp | Automatic transmission gear box |
JPS5689723A (en) | 1979-12-21 | 1981-07-21 | Seiko Instr & Electronics Ltd | Liquid crystal display device |
US5314616A (en) * | 1992-10-29 | 1994-05-24 | Ford Motor Company | Partial flow filter system for an automatic power transmission mechanism |
JPH08270766A (ja) * | 1995-03-31 | 1996-10-15 | Honda Motor Co Ltd | 遊星歯車機構の潤滑油供給構造 |
-
2004
- 2004-09-09 US US10/574,251 patent/US7357745B2/en not_active Expired - Fee Related
- 2004-09-09 WO PCT/JP2004/013116 patent/WO2005033554A1/ja active Application Filing
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5689723U (ja) * | 1979-12-13 | 1981-07-17 | ||
JPH06297971A (ja) * | 1993-04-19 | 1994-10-25 | Kubota Corp | 農作業車の伝動構造 |
JPH07144550A (ja) * | 1993-11-25 | 1995-06-06 | Kanzaki Kokyukoki Mfg Co Ltd | 作業車用四輪駆動トランスミッション |
JPH08338506A (ja) * | 1995-06-09 | 1996-12-24 | Komatsu Ltd | 油圧機械式変速装置 |
JPH10272941A (ja) * | 1997-01-30 | 1998-10-13 | Uchida Yuatsu Kiki Kogyo Kk | 車両走行用静流体圧伝動装置 |
JP2000130568A (ja) * | 1998-10-26 | 2000-05-12 | Yanmar Diesel Engine Co Ltd | 遊星歯車機構におけるプラネタリーギア軸受部への注油構造 |
JP2000219056A (ja) * | 1999-01-29 | 2000-08-08 | Yanmar Diesel Engine Co Ltd | 油圧式無段変速機 |
JP2001108060A (ja) * | 1999-10-06 | 2001-04-20 | Yanmar Diesel Engine Co Ltd | 油圧−機械式変速装置 |
Also Published As
Publication number | Publication date |
---|---|
US7357745B2 (en) | 2008-04-15 |
US20070093352A1 (en) | 2007-04-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2005033554A1 (ja) | 走行作業機 | |
US8747269B2 (en) | Continuously variable transmission and a working machine including a continuously variable transmission | |
CA1302736C (en) | Countershaft transmission | |
WO2010131576A1 (ja) | 作業車両の変速装置 | |
US6257080B1 (en) | Power-Shifted transmission for industrial vehicles | |
JPH0754939A (ja) | 駆動輪、特に可動作業機の駆動輪用機械式変速機 | |
US6935986B2 (en) | Two speed gearbox | |
WO2005073008A1 (ja) | トラクタ | |
US6491600B1 (en) | Two stage planetary final device | |
JP3964995B2 (ja) | 油圧−機械式変速機 | |
US7712573B2 (en) | Working vehicle | |
GB2350665A (en) | Hydrostatic/direct drive transmission | |
JP4750385B2 (ja) | 走行作業機における作業機への動力伝達装置 | |
JP2006027405A (ja) | 走行作業機における作業機への動力伝達装置 | |
JP2003083420A (ja) | ホイール式車両の機械−油圧トランスミッション | |
FI56648C (fi) | Extra vaexellaoda foer sjaelvgaoende maskiners krafttransmissystem | |
JP2006029418A (ja) | 走行作業機における動力伝達装置 | |
JP2018053999A (ja) | Hmt構造 | |
WO2023210069A1 (ja) | 作業車両の動力伝達装置 | |
KR102666858B1 (ko) | 동력 전달 장치, 변속 장치 및 차축 케이스의 고정 구조 | |
JP4400879B2 (ja) | 作業車両 | |
JP4431468B2 (ja) | 作業車両 | |
JP4693370B2 (ja) | 走行作業機における機体構造 | |
JP4408072B2 (ja) | 作業車両 | |
JP2006027432A (ja) | 走行作業機における油圧式走行変速装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2007093352 Country of ref document: US Ref document number: 10574251 Country of ref document: US |
|
122 | Ep: pct application non-entry in european phase | ||
WWP | Wipo information: published in national office |
Ref document number: 10574251 Country of ref document: US |