JP2003090416A - Combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve cooling efficiency of an HST body. SOLUTION: This combine harvester is provided with a traveling device (a), a reaping part (c), a threshing part (e) for threshing a reaped grain culm, a grain tank (f) for storing a threshed grain, and an auger (g) for delivering the stored grain outside. A guide plate 11 is provided on a front part of the HST 5 for preventing cooling air generated by a cooling fan 9 installed on an input shaft 8 of the HST 5 in the traveling device (a) from blowing forward.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling structure for a continuously variable transmission in a combine traveling device.

[0002]

2. Description of the Related Art Conventionally, in a vehicle having a pair of left and right crawler traveling devices such as a combine, each continuously variable transmission mechanism (hereinafter referred to as "HST") for traveling and turning, left and right side clutch mechanisms, and differential transmissions. There is known a traveling device that includes a mechanism, a reverse rotation counter gear mechanism, and the like, and that continuously drives the axle on the inside of the turn continuously by driving the differential transmission mechanism by the turning HST.

[0003]

In such a combine traveling apparatus, a cooling fan is attached to the input shaft of the HST, and an operation panel is arranged above the cooling fan. Are known. However, when the cooling air blows out in front of the HST, it causes a convection upward from between the harvesting section of the combine and the operation panel, causing a problem that the hot air hits the operator. Further, there is known a method of providing a shroud for introducing and guiding the cooling air by the cooling fan attached to the input shaft of the HST into the HST main body. However, if the gap between the shroud and the HST main body is wide, the wind speed of the cooling air becomes slow. There is a problem that the cooling effect decreases. Further, since the flywheel of the engine is usually arranged near the cooling fan and the space in the vicinity is small, it is necessary to remove the HST when trying to remove the shroud for maintenance. The present invention has been made to solve the above-mentioned conventional problems, and its objects are to prevent the above-mentioned hot air from being blown out, improve the cooling effect of the HST main body, and easily remove the shroud. There is something to do.

[0004]

In order to achieve such an object, the invention of claim 1 provides a traveling device, a mowing unit, a threshing unit for threshing the cut grain culm, and a grain for storing the threshed grain. In a combine equipped with a tank and an auger for discharging the stored grain to the outside of the machine, a guide plate for preventing cooling air from being blown out forward by a cooling fan attached to the input shaft of the continuously variable transmission mechanism in the traveling device. Is provided in front of the continuously variable transmission mechanism. According to the invention of claim 1, it is possible to prevent the conventional cooling air from convection and hit the operator with the hot air because the guide plate prevents the cooling air from being blown out in front of the HST.

According to a second aspect of the present invention, in the combine, a shroud for guiding the cooling air from the cooling fan attached to the input shaft of the continuously variable transmission mechanism to the continuously variable transmission body is provided, and the cooling of the shroud is performed. The width of the guide portion that covers the continuously variable transmission body is narrower than that of the guide portion that covers the fan outer diameter. According to the invention of claim 2, since the gap between the HST and the shroud becomes narrow,
The wind speed passing through the HST body becomes faster than the wind speed blown by the fan, and the cooling effect of the HST improves.

According to a third aspect of the present invention, in the combine, the shroud for guiding the cooling air from the cooling fan attached to the input shaft of the continuously variable transmission mechanism into the continuously variable transmission mechanism main body is provided so as to be separable. . According to the invention of claim 3, by providing the shroud so that it can be divided into two,
The shroud can be removed without removing the HST during maintenance.

According to a fourth aspect of the present invention, a front side portion of the two-part shroud and a guide plate provided in front of the continuously variable transmission mechanism for preventing cooling air from blowing forward are integrally formed. According to the invention of claim 4, the guide plate is removed together with the removal of the shroud, and the maintainability is improved.

[0008]

According to the invention of claim 1, a traveling device,
In a combine equipped with a mowing unit, a threshing unit for threshing cut grain culms, a grain tank for storing threshed grains, and an auger for discharging the stored grains to the outside of the machine, a continuously variable transmission in the traveling device. Since the guide plate for preventing the cooling air blown by the cooling fan attached to the input shaft of the mechanism is provided in front of the continuously variable transmission mechanism, the cooling air is blown out in front of the HST. It is possible to prevent the conventional cooling air from convection and hit the operator with hot air.

According to a second aspect of the present invention, in the combine, a shroud is provided for guiding the cooling air from the cooling fan attached to the input shaft of the continuously variable transmission mechanism into the continuously variable transmission mechanism body. Since the width of the guide portion that covers the continuously variable transmission main body is narrower than the guide portion that covers the cooling fan outer diameter of the shroud,
The gap between the HST and the shroud becomes narrower, the wind speed passing through the HST main body is accelerated more than the wind speed sent by the fan, and the cooling effect of the HST is improved.

Further, according to the invention of claim 3, in the combine, the shroud for guiding the cooling air by the cooling fan attached to the input shaft of the continuously variable transmission mechanism into the continuously variable transmission body can be divided into two parts. Since the configuration is provided, the shroud can be removed without removing the HST during maintenance. Further, according to the invention of claim 4, the front side portion of the divided shroud and the guide plate provided in front of the continuously variable transmission mechanism for preventing the cooling air from being blown out forward are integrally configured. Therefore, the guide plate can be removed together with the shroud, which improves maintainability.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an overall view showing an example of a combine according to the present invention. The combine shown is a crawler a, a crawler drive shaft (also referred to as an axle or a wheel shaft) b, a mowing section c, and a feed chain d that supplies the threshing machine while conveying the cut grain culm.
And a thresher e and a grain tank f for storing threshed grains
And an auger g for discharging the stored grain to the outside of the machine.

FIG. 2 is a switch layout of the driver's seat of the combine. The HST lever 1 tilts forward and backward to increase or decrease the vehicle speed. When the HST lever 1 is tilted forward from the neutral position in the figure, the speed is increased in the forward direction, and when tilted backward, the speed is increased in the reverse direction. Then, when returning from the forward or reverse position toward the neutral position, the vehicle decelerates and the aircraft stops at the neutral position. The accelerator lever 2 tilts back and forth to open and close the throttle to raise and lower the engine speed. When tilted backward, the throttle opens to increase the engine speed, and when tilted forward, the throttle closes to close the engine speed. Lower.
The power steering lever 3 tilts forward, backward, leftward and rightward to operate the raising and lowering of the mowing section c and the turning of the machine body. . The aircraft will turn left if it is pushed to the left and turn right if it is pushed to the right.

FIG. 3 is a block diagram of the vicinity of the HST in the combine traveling apparatus according to the present invention. FIG. 4 is a sectional view of the vicinity of the HST in the combine traveling device according to the present invention, and FIGS. 5 and 6 are a front view and a plan view showing a two-part structure of the shroud, respectively. The engine 4 is attached to the input shaft 8 of the HST 5 via the engine pulley 6 attached to the output shaft of the engine 4 and the input pulley 7 wound around the belt.
The power from is transmitted. Then, the power is transmitted from the output shaft of the HST 5 to the axle b of the crawler a, the mowing section c and the like via a transmission device. As an example of this transmission device, side clutches for connecting and disconnecting power to the crawler a are provided on the left and right sides, and a differential transmission mechanism is provided between the left and right side clutch gears so that the drive by the HST 5 is performed by the differential transmission mechanism. And the left and right side clutches are disengaged and the differential transmission mechanism is driven so that the axle b on the inside of the turn can be shifted.

A cooling fan 9 is attached to the input shaft 8 of the HST 5, and a guide plate 11 for preventing the cooling air generated by the rotation of the cooling fan 9 from being blown out in front of the HST 5.
Is provided in front of HST5. As described above, conventionally, since such a guide plate is not provided, there is a problem that the cooling air blown out in front of the HST 5 convects and hits the operator with hot air, but the cooling air blows out in front of the HST 5. This can be prevented by the guide plate 11, and the conventional problems can be prevented.

Further, shrouds 10F, 10R for guiding the cooling air from the cooling fan 9 attached to the input shaft 8 of the HST 5 to the HST 5 main body are provided around the cooling fan 9, and the shrouds are provided on the front side portion 10F and the rear side portion. 1
It is configured so that it can be divided into two parts with 0R (see FIGS. 5 and 6). That is, the front side portion 10F and the rear side portion 10R are usually fixed with bolts or the like, and the front side portion 10F and the rear side portion 10R can be divided into front and rear by removing the bolts and the like. 5 and 6, (10F) and (10F)
R) (with parentheses) shows a state after the shroud is divided. Furthermore, the front side portion 10F of the shroud and the H
A guide plate 11 provided in front of ST5 for preventing the cooling air from blowing out forward is fixed by bolts or the like to be integrally configured. Then, the shroud 10F and the guide plate 11
In the integrated configuration with the above, the width of the guide portion B that covers the HST 5 main body is narrower than the width of the guide portion A that covers the outer diameter of the cooling fan 9 (see FIGS. 3 and 6).

As described above, the shrouds 10F and 10R for guiding the cooling air from the cooling fan 9 attached to the input shaft 8 of the HST 5 to the HST 5 main body are provided so as to be divided into two, as shown in FIG. HST5
Even when the cooling fan 9 and the flywheel 12 of the engine 4 partially overlap each other when viewed from the axial direction and the space between the two is narrow, the HS
The shrouds 10F and 10R can be removed without removing T5.

Further, by integrally forming the front side portion 10F of the divided shroud and the guide plate 11, the guide plate 11 can be removed together with the shroud 10F, so that maintenance is easy. Therefore, the maintainability is improved. Further, by making the width of the guide portion B covering the HST5 main body narrower than the width of the guide portion A covering the outer diameter of the cooling fan 9, the gap between the HST5 and the guide plate 11 becomes narrower.
The wind speed passing through the ST5 main body is accelerated as compared with the wind speed sent by the cooling fan 9, and the cooling effect of the HST5 is improved.

FIG. 7 is a sectional view of the front part of the combine, and FIG. 8 is a plan sectional view of the vicinity of HST. The trunnion arm 13 of the HST 5 is attached in front of the guide plate 11 provided in front of the aforementioned HST 5, and the trunnion arm 13 and the HST lever 1 are connected by the operation link 14. According to this, the trunnion arm 13 has the guide plate 1
It will be located on the outside of 1, and the guide plate 11 and the HST
The main body of the HST 5 is closer to the main body of the HST 5, and the speed of the cooling air passing through the surface of the HST 5 is increased, so that the cooling effect of the HST 5 is improved.

FIG. 9 is a side sectional view near the HST, and FIG. 10 is a front view thereof. As described above, in the configuration in which the cooling fan 9 is attached to the input shaft of the HST 5 and the HST tension arm 15 is arranged inside thereof (see FIG. 9), the HST
Since the tension arm 15 blocks the fan air passage, as shown in FIG. 10, by making the HST tension arm 15 U-shaped in front view so as to bypass the fan air passage, the cooling fan can be directly attached to the HST 5 main body. The wind hits
Does not impair the cooling effect. Of course, the shape is not limited to the U-shape as shown in FIG. 10, and another shape that does not block the fan air passage may be used. In the figure, 16 is a tension pulley, 17 is an HST mounting bolt, 18 is a mounting boss, and 19 is an HST tension arm fulcrum.

The front side 1 of the shroud already divided into two parts
Although it has been described that the 0F and the guide plate 11 are integrally configured, as shown in FIG. 11, the shroud portion 20 and the HS that cover the entire cooling fan 9 with a full cover configuration are provided.
By integrally forming the wind tunnel portion 21 that covers the entire T5, the structure can be made compact and can be manufactured at low cost. Although not shown in particular, a portion around which the belt wound around the pulley is inserted is appropriately cut. Further, in such an integrated configuration of the shroud portion 20 covering the entire cooling fan 9 and the wind tunnel portion 21 covering the entire HST 5, the wind tunnel 2
By arranging the hydraulic oil passage pipe 22 of the HST 5 in the inside of 1 (see FIG. 12), not only the HST 5 main body is cooled by the cooling wind (high speed wind) flowing in the wind tunnel 21, but also the oil circulating in the pipe is cooled Therefore, the cooling performance is significantly improved.

Even in the case where the front side portion 10F of the shroud divided into two parts and the guide plate 11 described above are integrally formed, by arranging the hydraulic oil passage pipe of the HST 5 in the air passage of the cooling fan 9. , HS by cooling air
Not only the T5 body is cooled, but also the oil circulating in the pipe is cooled, so that the cooling performance is significantly improved.

Next, the side cover of the operation panel will be described. 13 is an exploded perspective view of a side cover of the operation panel, FIG. 14 is a plan view thereof, and FIG. 15 is a front sectional view thereof. On the left side of the clutch box 23 having an operation panel such as the HST lever panel 24 on the left side of the operator's seat of the combine, a cover 25 having an inclined surface descending from the rear to the front is provided integrally with the clutch box 23. On the left side of 25, a triangular cover 26 having an inclined surface from the cover toward the inlet funnel is provided. The triangular cover 26 is attached to the left side surface of the cover 25 by a knob 27, and the triangular cover 26 is detachably attached to the cover 25 by removing the knob 27. Cover 25 having the inclined surface
With this configuration, the mowing unit and the operation seat are separated from each other, so that straw dust, dust, and the like generated at the mowing unit are prevented from falling onto the clutch box 23. In the combine harvester, since dust and the like are inevitably generated near the inlet funnel, the cover 25 has a height higher toward the rear closer to the inlet funnel. Further, since the straw chips and the like that have fallen onto the cover drop downwards by the triangular cover 26 having the inclined surface, there is no inconvenience that the straw chips and the like accumulate on the cover.

FIG. 16 is an exploded perspective view showing another form of the side cover of the operation panel, and FIG. 17 is a plan view thereof. In this embodiment, a long hole 29 for inserting the sickle is provided on the rear side of the cover 25 having the inclined surface, and the sickle 28 can be compactly stored without the need to attach a new part for placing the sickle. Further, when taking out the sickle 28, it can be arranged at a position within reach of both the operator seat side and the thresher side, so that the operator can immediately take out the sickle 28. In addition to the cover 25, the slot 29 may be provided at the rear side of the clutch box 23 (see FIG. 17), the cylinder cover of the threshing section, the thresher cover of the threshing section, or the like.

FIG. 18 is an exploded perspective view showing another form of the side cover of the operation panel, and FIG. 19 is a side view thereof. In this embodiment, the stay is taken out from the transmission case and attached to the triangular cover 26. Specifically, the lower end of the stay 30 is attached to the oiling pipe 31 of the mission, and the upper end of the stay 30 is attached to the triangular cover 26 by the knob 27a. Attach to. In this way, the triangular cover 26 can be connected to the clutch box 23 side and the transmission case side, and the side cover on the side of the clutch box can be firmly attached.

Further, in the prior art, the side cover beside the clutch box could not be easily removed, so that for example, in order to adjust the rod for threshing or mowing, it was necessary to go under the mowing carrier or remove the mowing carrier. However, as described above, in the present embodiment, the triangular cover 26 can be easily removed, so that the rod adjustment and the lubrication port 31 described above are performed.
Lubrication from a can be performed easily.

[Brief description of drawings]

FIG. 1 is an overall side view showing an example of a combine according to the present invention.

FIG. 2 is a switch layout view of a driver's seat of a combine harvester.

FIG. 3 is an H diagram of the combine traveling apparatus according to the present invention.
It is a block diagram of ST vicinity.

FIG. 4 is a sectional view thereof.

FIG. 5 is a front view showing a two-part configuration of the shroud.

FIG. 6 is a plan view thereof.

FIG. 7 is a side sectional view of a front portion of the combine.

FIG. 8 is a plan sectional view in the vicinity of HST.

FIG. 9 is a side sectional view in the vicinity of HST.

FIG. 10 is a front view showing the shape of an HST tension arm.

FIG. 11 is a plan view of relevant parts near the HST.

FIG. 12 is likewise a plan view of an essential part.

FIG. 13 is an exploded perspective view of a side cover of the operation panel.

FIG. 14 is a plan view thereof.

FIG. 15 is a front sectional view thereof.

FIG. 16 is an exploded perspective view showing another form of the side cover of the operation panel.

FIG. 17 is a plan view thereof.

FIG. 18 is an exploded perspective view showing another form of the side cover of the operation panel.

FIG. 19 is a side view thereof.

[Explanation of symbols]

a crawler b Crawler drive shaft c Mowing unit d feed chain e Threshing machine f grain tank g auger 1 HST lever 2 accelerator lever 3 power steering lever 4 engine 5 HST 9 Cooling fan 10F, 10R shroud 11 Guide plate 15 HST tension arm

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 2B076 AA03 BA05 DB08                 3J063 AA13 AB44 AC03 BA15 CA01                       XH05 XH13 XH23 XH33 XH42                       XH44

Claims (4)

[Claims] 1. A combine comprising a traveling device, a mowing unit, a threshing unit for threshing the cut grain culm, a grain tank for storing the threshed grains, and an auger for discharging the stored grains to the outside of the machine. A combine plate is provided in front of the continuously variable transmission mechanism for preventing a cooling air blown by a cooling fan attached to an input shaft of the continuously variable transmission mechanism in the traveling device from being blown out forward. 2. A combiner equipped with a traveling device, a mowing section, a threshing section for threshing the cut grain culm, a grain tank for storing the threshed grain, and an auger for discharging the stored grain to the outside of the machine. A shroud for guiding the cooling air from the cooling fan attached to the input shaft of the continuously variable transmission mechanism in the traveling device to the continuously variable transmission mechanism main body, and a shroud for guiding the cooling air from the cooling fan outer diameter. A combine characterized in that the width of the guide portion that covers the main body of the speed change mechanism is narrowed. 3. A combine comprising a traveling device, a mowing unit, a threshing unit for threshing the cut grain culms, a grain tank for storing the threshed grains, and an auger for discharging the stored grains to the outside of the machine. A shroud for guiding the cooling air from the cooling fan attached to the input shaft of the continuously variable transmission in the traveling device into the continuously variable transmission main body so that the shroud can be divided into two. 4. A front side portion of the shroud divided into two,
4. The combine according to claim 3, wherein the combine is integrally formed with a guide plate provided in front of the continuously variable transmission mechanism to prevent the cooling air from being blown out forward.