JP3620086B2 - Traveling power transmission device for crawler traveling type power vehicle - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a traveling transmission device for a powered vehicle traveling by a crawler.
[0002]
[Prior art]
In a small crawler type vehicle, the course of the aircraft is changed by applying a brake to one crawler.
[0003]
In this case, the transmission has a side clutch / brake shaft with side clutches and brakes on the left and right sides, and the crawler is driven via the side clutch / brake shaft. The course of the aircraft is changed by stopping the crawler on one side. When going straight, connect the left and right side clutches and rotate the crawler at the same speed on the left and right.
[0004]
[Problems to be solved by the invention]
However, such a system (pivot turn) that brakes only one crawler is not sufficient in some cases because the turning radius is too large or too small.
[0005]
Therefore, even in a small one, like a large machine, a spin turn that rotates the left and right crawlers in opposite directions, and a mild turn that drives one crawler in the same direction as the other crawler at a lower speed (registered by the applicant) (Trademark) is desired.
[0006]
However, if a transmission shaft is newly provided in order to realize a spin turn or a mild turn (registered trademark of the applicant) , there is a possibility that the transmission becomes larger and the ground clearance of the transmission becomes lower, resulting in an obstacle to traveling.
[0007]
Accordingly, an object of the present invention is to provide a crawler-type vehicle transmission that can execute a spin turn and a mild turn (registered trademark of the applicant) in addition to a pivot turn without lowering the ground clearance of the transmission.
[0008]
[Means for Solving the Problems]
The present invention provides a crawler traveling type power vehicle having a transmission that independently transmits engine power to the left and right crawlers of the fuselage and having a transmission case that covers the transmission .
An input shaft for inputting power from an engine;
An intermediate shaft that rotates at either high speed or low speed in response to rotation from this input shaft,
Side clutch and brake shafts with spin and mild output gears, as well as left and right brakes,
A spin-mild shaft that includes a spin-mild clutch on the left and right, a switching clutch in the center, and a mild output gear and a spin output gear on the left and right of the switching clutch,
Spin mild deceleration axis,
A decelerating shaft having a reverse gear constantly meshing with the spin-mild output gear;
Formed with crawler drive shafts connected to the left and right crawlers,
By rotating and braking each axis of the input shaft, intermediate shaft, side clutch / brake shaft, deceleration shaft, crawler drive shaft, straight travel, stop, pivot turn,
Rotate and brake each axis of input shaft, intermediate shaft, side clutch / brake shaft, spin / mild shaft, spin / mild deceleration shaft, deceleration shaft, crawler drive shaft, and perform spin turn and mild turn.
The speed reduction shaft, side clutch / brake shaft, intermediate shaft, and input shaft are arranged in this order above the crawler drive shaft and beyond the front of the crawler. Place the shaft and spin mild deceleration shaft so that the mission case does not protrude from the crawler to the whole surface,
Further, the spin-mild output gear, the mild output gear, and the reverse gear are arranged on a straight line .
[0009]
[Action]
During the spin turn, power is transmitted from the input shaft of the transmission to the side clutch / brake shaft, and the crawler drive shaft on one side is rotated in reverse by the spin / mild shaft.
[0010]
In the case of mild turn (registered trademark of the applicant) , the crawler drive shaft on one side is driven in the same direction at a lower speed than the other.
[0011]
During the pivot turn, power is transmitted from the input shaft of the transmission to the side clutch / brake shaft, and braking is applied to the crawler drive shaft on one side by the left or right brake.
The newly added Spin Mild Spindle and Spin Mild Deceleration Shaft are added to the simple transmission that can only be pivot-turned, so the transmission case does not come before the front of the crawler and its ground. The height is not lower than that of a simple transmission that can only have a conventional pivot turn.
[0012]
【Example】
1 and 2 show a combine embodying the present invention.
[0013]
Reference numerals 10 and 10 denote combine crawlers, and 11 denotes a crawler drive shaft. 12 is a cutting part, 13 is a threshing part.
[0014]
A transmission 14 transmits the power of an engine (not shown) to the left and right crawlers 10 and 10.
[0015]
Next, the configuration of the transmission 14 will be described (see FIG. 3).
[0016]
An integrally formed high speed gear 16 and low speed gear 17 are loosely fitted to an input shaft 15 of a transmission 14 to which power is input from the engine so as to be movable in the axial direction. The high speed gear 16 and the low speed gear 17 are moved by a shifter fork (not shown).
[0017]
Reference numeral 18 denotes an intermediate shaft, to which the first transmission gear 19, the second transmission gear 20, and the third transmission gear 21 are fixed, the first transmission gear 19 selectively meshes with the high speed gear 16, and the second transmission gear 20 is Selectively meshes with the low speed gear 17.
[0018]
22 is a side clutch / brake shaft provided downstream of the intermediate shaft 18, and brakes 23, 24 are arranged on the left and right sides of the side clutch / brake shaft 22, and the pawl clutches 25, 24 are integrated with the left and right brakes 23, 24. 26 is disposed. The claw clutches 25 and 26 are always urged by a spring to connect the driving side and the passive side. Then, the pawl clutches 25 and 26 are disconnected by separating the passive side against the urging force by a hydraulic circuit (not shown).
[0019]
Reference numeral 27 denotes a spin / mild output gear that rotates integrally with the driving side, and is fixed to the side clutch / brake shaft 22.
[0020]
Further, the fifth transmission gear 28 and the sixth transmission gear 29 are loosely fitted integrally to the passive sides of the left and right pawl clutches 25 and 26, respectively. A seventh transmission gear 30 that is always meshed with the third transmission gear 21 is fixed to the side clutch / brake shaft 22.
[0021]
Reference numeral 31 denotes a spin / mild shaft, which is equipped with spin / mild clutches 32 and 33 on the left and right sides thereof, and a switching clutch 34 is spline-coupled to the central portion so as to be laterally movable. A mild output gear 35 and a spin output gear 36 are loosely fitted on the left and right sides of the switching clutch 34, and the mild output gear 35 is always meshed with the spin / mild output gear 27. The switching clutch 34, the mild output gear 35, and the spin output gear 36 are formed with engaging teeth that are detachable from each other. The left and right spin / mild clutches 32, 33 are connected to an eighth transmission gear 37 and a ninth transmission gear 38, respectively. The eighth transmission gear 37 and the ninth transmission gear 38 are loosely fitted to the spin / mild shaft 31. To do.
[0022]
Reference numeral 39 denotes a spin-mild reduction shaft, which fixes a tenth transmission gear 40 that is always meshed with the eighth transmission gear 37 to the eleventh transmission gear 41, and a twelfth transmission gear 42 that is always meshed with the ninth transmission gear 38. Fix to the transmission gear 43. Then, the eleventh transmission gear 41 and the thirteenth transmission gear 43 are loosely fitted to the spin / mild reduction shaft 39.
[0023]
Here, the spin / mild shaft 31 and the spin / mild deceleration shaft 39 are positioned behind the fuselage of the side clutch / brake shaft 22 (see FIG. 5).
[0024]
Reference numeral 44 denotes a reduction shaft, which is a fourteenth transmission gear 45 that always meshes with the tenth transmission gear 40, a fifteenth transmission gear 46 that is integral with the fourteenth transmission gear 45, and a sixteenth transmission gear 47 that always meshes with the twelfth transmission gear 42. And a seventeenth transmission gear 48 integral with the sixteenth transmission gear 47 are loosely fitted to the reduction shaft 44. The fifteenth transmission gear 46 always meshes with the fifth transmission gear 28, and the seventeenth transmission gear 48 always meshes with the sixth transmission gear 29.
[0025]
A reverse gear 49 that is always meshed with the spin-mild output gear 27 and a nineteenth transmission gear 50 that is integral with the reverse gear 49 are loosely fitted to the reduction shaft 44. Further, the nineteenth transmission gear 50 always meshes with the spin output gear 36.
[0026]
A twentieth transmission gear 51 that always meshes with the fourteenth transmission gear 45 is fixed to the left crawler drive shaft 11, and a twenty-first transmission gear 52 that always meshes with the sixteenth transmission gear 47 is fixed to the right crawler drive shaft 11.
[0027]
Here, since the spin mild shaft 31 and the spin mild deceleration shaft 39 are located above the crawler drive shafts 11 and 11, the ground height (A) is not different from the conventional mission (see FIG. 5).
[0028]
The spin / mild output gear 27, the mild output gear 35, and the reverse gear 49 are arranged on a straight line as shown in FIG. As a result, the lateral width of the transmission 14 can be reduced, and the entire transmission 14 can be reduced in size.
[0029]
Next, this operation will be described.
[0030]
First, the power transmission path when the combine moves straight will be described.
[0031]
Power from the engine is transmitted to the intermediate shaft 18 via the high speed gear 16 or the low speed gear 17, and is transmitted from the intermediate shaft 18 to the side clutch / brake shaft 22 via the third transmission gear 21 and the seventh transmission gear 30. Then, power is transmitted to the fifth transmission gear 28 and the sixth transmission gear 29 via the left and right pawl clutches 25 and 26, and further transmitted to the fifteenth transmission gear 46 and the seventeenth transmission gear 48. Next, power is transmitted to the left crawler drive shaft 11 and the right crawler drive shaft 11 through the 14th transmission gear 45 and the 20th transmission gear 51, the 16th transmission gear 47 and the 21st transmission gear 52, and the left and right crawlers. Rotate at the same speed and go straight ahead.
[0032]
Next, the pivot turn to the right will be described.
[0033]
The right claw clutch 26 is disengaged, and the power from the input shaft 15 is disconnected from the side clutch / brake shaft 22 via the sixth transmission gear 29 and the seventeenth transmission gear 48. At the same time, the right brake 24 is applied to brake the rotation of the sixth transmission gear 29 and the right crawler drive shaft 11 is braked via the seventeenth transmission gear 48, the sixteenth transmission gear 47 and the twenty-first transmission gear 52.
[0034]
On the left side, power is transmitted from the side clutch / brake shaft 22 to the left crawler drive shaft 11 via the fifth transmission gear 28, the fifteenth transmission gear 46, the fourteenth transmission gear 45 and the twentieth transmission gear 51.
[0035]
As a result, the left crawler 10 rotates in the same manner as when traveling straight, the right crawler 10 is braked, and the aircraft pivots to the right (see the double lines in FIGS. 3 and 4).
[0036]
Next, a mild turn to the right (registered trademark of the applicant) will be described.
[0037]
Power from the input shaft 15 is transmitted to the side clutch / brake shaft 22 in the same way as when traveling straight, and the right pawl clutch 26 is cut off and the left pawl clutch 25 is engaged. Then, the spin / mild output gear 27 rotates integrally with the driving side of the left pawl clutch 25, and the rotation of the spin / mild output gear 27 is controlled by rotating the mild output gear 35 by engaging the switching clutch 34 with the mild output gear 35. To the spin / mild shaft 31.
[0038]
Here, the right spin / mild clutch 33 is engaged, and the rotation of the spin / mild shaft 31 is performed via the ninth transmission gear 38, the twelfth transmission gear 42, the sixteenth transmission gear 47, and the twenty-first transmission gear 52. To the right crawler drive shaft 11. In addition, although the 17th transmission gear 48 integral with the 16th transmission gear 47 also rotates together, the sixth transmission gear 29 rotates freely because the right pawl clutch 26 is in a disengaged state.
[0039]
Further, the transmission of power to the left crawler drive shaft 11 is the same as in the case of the pivot turn.
[0040]
Thus, since the right crawler 10 travels in the same traveling direction and slower than the left crawler 10 from the gear ratio of the right transmission path and the left transmission path, the aircraft turns in the right direction.
[0041]
Next, the spin turn to the right will be explained.
[0042]
The right pawl clutch 26 is disengaged and the left pawl clutch 25 is engaged. Then, the spin / mild output gear 27 rotates integrally with the drive side of the left pawl clutch 25, and the 19th transmission gear 50 rotates through the reverse gear 49. Here, the switching clutch 34 is engaged with the spin output gear 36, and the spin / mild shaft 31 is rotated by the rotation of the nineteenth transmission gear 50 via the spin output gear 36.
[0043]
Here, the right spin / mild clutch 33 is engaged, and the rotation of the spin / mild shaft 31 is rotated to the right via the ninth transmission gear 38, the twelfth transmission gear 42, the sixteenth transmission gear 47 and the twenty-first transmission gear 52. It is transmitted to the crawler drive shaft 11 to reverse the right crawler.
[0044]
On the other hand, the power is transmitted to the left crawler drive shaft 11 in the same manner as when traveling straight, so that the aircraft turns.
[0045]
The sixteenth transmission gear 47 and the seventeenth transmission gear 48 integrated with the sixteenth transmission gear 47 rotate together. However, since the right pawl clutch 26 is in a disengaged state, the sixth transmission gear 29 rotates freely.
[0046]
As described above, the case of the transmission 14 does not protrude from the front of the crawler 11 by arranging the spin mild shaft 31 and the spin mild deceleration shaft 39 behind the side clutch / brake shaft 22 and the deceleration shaft 44.
[0047]
In addition, since the spin mild shaft 31 and the spin mild deceleration shaft 39 are made higher than the left and right crawler drive shafts 11, 11, there is no possibility of hindering the operation of the combine.
[0048]
【The invention's effect】
In the present invention, the speed reduction shaft, the side clutch / brake shaft, the intermediate shaft, and the input shaft are arranged in order above the crawler drive shaft and at a position not protruding from the front portion of the crawler. By arranging the spin mild axis and spin mild deceleration axis, in addition to being able to perform a spin turn and mild turn (registered trademark of the applicant) in addition to the pivot turn, the mission case comes before the front of the crawler In addition, since the height of the ground is not lower than that of a simple transmission that can only have a conventional pivot turn, there is no fear that the transmission is clogged with mud or the like and obstructs traveling . Further, since the spin / mild output gear, the mild output gear, and the reverse gear are arranged on a straight line, the lateral width of the transmission can be narrowed and the transmission can be downsized .
[Brief description of the drawings]
FIG. 1 is an overall side view of a combine according to an embodiment.
FIG. 2 is an overall plan view of the combine according to the embodiment.
FIG. 3 is a development view of a transmission path of the combine according to the embodiment.
FIG. 4 is a side view of the transmission of the combine according to the embodiment.
FIG. 5 is an enlarged side view of a main part of the combine of FIG. 1;
[Explanation of symbols]
10 Crawler 11 Crawler Drive Shaft 14 Transmission 15 Input Shaft 18 Intermediate Shaft 22 Side Clutch Brake Shaft 23, 24 Brake 25, 26 Claw Clutch 27 Spin Mild Output Gear 31 Spin Mild Shaft 35 Mild Output Gear 36 Spin Output Gear 39 Spin Mild reduction shaft 44 Reduction shaft 49 Reverse gear

Claims (1)

In a crawler traveling type power vehicle provided with a transmission that independently transmits the power of the engine to the left and right crawlers, and having a transmission case covering the transmission ,
An input shaft for inputting power from an engine;
An intermediate shaft that rotates at either high speed or low speed in response to rotation from this input shaft,
Side clutch and brake shafts with spin and mild output gears, as well as left and right brakes,
A spin / mild shaft with a mild output gear and a spin output gear on the left and right of the switching clutch, and a switching clutch on the left and right of the switching clutch.
Spin mild deceleration axis,
A decelerating shaft having a reverse gear constantly meshing with the spin-mild output gear;
Formed with crawler drive shafts connected to the left and right crawlers,
By rotating and braking each axis of the input shaft, intermediate shaft, side clutch / brake shaft, deceleration shaft, crawler drive shaft, straight advance, stop, pivot turn,
Rotate and brake each axis of input shaft, intermediate shaft, side clutch / brake shaft, spin / mild shaft, spin / mild deceleration shaft, deceleration shaft, crawler drive shaft, and perform spin turn and mild turn.
The speed reduction shaft, side clutch / brake shaft, intermediate shaft, and input shaft are arranged in this order above the crawler drive shaft and beyond the front of the crawler. Place the shaft and spin mild deceleration shaft so that the mission case does not protrude from the crawler to the whole surface,
Furthermore, the spin mild output gear, line transmission system run characterized by arranging a mild output gear and reverse gear in a straight line.

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