JPH0974863A - Transmission case upper side-cooling device of combined harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transmission case upper side-cooling device of a combined harvester, capable of stopping the flow of hot air with a specific structure and largely raising the cooling efficiency. SOLUTION: In the combined harvest, an output pulley 9 and a cooling fan 8 for cooling a static hydraulic driving mechanism HST covered by a shroud 7 are attached to an input shaft 6 projected from the static hydraulic driving mechanism HST disposed in the upper part of transmission case 5 to the side of a suction port 3, and an engine pulley 12 for transmitting power to the input pulley through a belt 11 and a fly wheel 13 facing the outer peripheral side of the shroud are attached to the inside output shaft 10 of an engine E disposed behind a step 2. Therein, a dividing plate 14 capable of stopping hot air to flow from the fly wheel 13 into the space on the inside of shroud 7 is disposed between the fly wheel 13 and the cooling fan 8, and the dividing plate 14 is integrally disposed on the inside surface of the side cover 4 of the step.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine case upper cooling device which can cool a hydrostatic drive mechanism in the upper part of a mission case by a cooling fan while taking in outside air.

[0002]

2. Description of the Related Art Conventionally, a step lateral cover having an intake port 3 is erected on the inner side of the step in front of the driver's seat, and the hydrostatic drive mechanism mounted on the upper part of the mission case projects toward the intake port. A cooling fan and an input pulley, which are covered by a shroud and cool the hydrostatic drive mechanism, are mounted on the input shaft, and the output shaft on the inner side of the engine mounted behind the step is connected to the input pulley. In a combine comprising an engine pulley that transmits a belt and a flywheel that faces the outer peripheral side of the shroud, the heat generated in the engine during operation is taken in by the wind generated from the ring gear of the flywheel. It was being sent out as hot air to the front side of the shroud approaching the mouth.

[0003]

Therefore, the hot air from the engine side is forcibly mixed with the outside air taken into the shroud from the intake port by the cooling fan, so that the cooling mechanism for cooling the hydrostatic drive mechanism is cooled. There was a problem that the wind became hot air and the cooling efficiency deteriorated.

[0004]

SUMMARY OF THE INVENTION The present invention solves such a problem and makes it possible to effectively cool the hydrostatic drive mechanism with a simple structure. Therefore, the inside of the step in front of the driver's seat A step lateral cover having an intake port is erected on one side, and the input shaft protruding toward the intake port side from the hydrostatic drive mechanism mounted on the upper part of the transmission case is covered by a shroud to drive the hydrostatic drive. A cooling fan for cooling the mechanism and an input pulley are mounted, and an output shaft on the inner side of the engine mounted behind the step has an engine pulley for transmitting a belt to the input pulley and a fly facing the outer peripheral side of the shroud. In a combine configured by attaching a foil, hot air from the flywheel is disposed between the flywheel and the cooling fan in the shroud. With arranging a partition plate capable of blocking flowing into, it is constructed by integrally provided to the partition plate to the inner surface of the step lateral cover.

[0005]

Therefore, during operation, the heat generated in the engine becomes hot air due to the wind generated from the ring gear of the flywheel, and a part of the hot air is sent to the front side of the shroud of the cooling fan, but is blocked by the partition plate. Moreover, since the partition plate is integrally provided on the inner surface of the step lateral cover, it is possible to effectively prevent the hot air or the hot air from being sent to the front side of the shroud, and the cooling fan can cool the outside air. Can be taken in favorably to cool the hydrostatic drive mechanism with good cooling efficiency.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a side view schematically showing a combine. A front part of a machine body supported by both crawlers 15 is equipped with a mowing part A, and a rear left part of the mowing part A is provided. The threshing section B is installed, and the boarding operation section C is provided on the right side of the cutting section A.
And a grain hopper 17 is installed above the paddy pedestal 16 provided at the rear of the boarding operation unit C, and a hydrostatic drive mechanism HST is provided above the boarding operation unit C on the lateral inner side. The transmission case 5 is mounted on the vehicle and the transmission cases 5a and 18b extending from the lower portion of the transmission case 5 to the left and right sides are respectively transmitted to the drive sprockets 19 of both crawlers 15. To configure.

The boarding operation section C has a control column 2 at the front.
The top plate 21 of the side column is erected above the inside of step 2 in which 0 is erected, and the step horizontal cover 4 erected inside the step 2 below the side part of the top plate 21 has a plurality of screws. The engine E and the radiator 23 arranged at the rear of the step 2 are detachably attached by an outer lower portion of the engine cover 24, and an outer lower portion of the engine cover 24 is pivotally attached to a hinge 26 to open and close the engine cover 24. The driver's seat 1 is mounted on the upper part of 24, and air intakes 25a and 25b are provided on the upper surface thereof.

The input shaft 6 protruding from the hydrostatic drive mechanism HST is provided with a cooling fan 8 and an input pulley 9 which are covered with a shroud 7 supported from the mission case 5 side to cool the hydrostatic drive mechanism HST. A mesh 3a is stretched on the intake port 3 provided at a portion of the step lateral cover 4 that approaches the front of the shroud 7, and the output shaft 10 on the inner side of the engine E has the mesh of the shroud 7. A flywheel 13 and both engine pulleys 12, 12a facing the outer peripheral surface are mounted, and a belt 11 is hung on the engine pulley 12 and the input pulley 9, and
The engine pulley 12a and the input pulleys of the threshing section B are constructed by belts 27 that are hung.

A circular duct 28 having a diameter larger than that of the shroud 7 and capable of overlapping with the shroud 7 is fixed to a portion of the inner surface of the lateral step lateral cover 4 on the outer peripheral side of the intake port 3. The flywheel 1 is installed between the flywheel 13 and the shroud 7.
A partition plate 14 that prevents the hot air sent from 3 from flowing inward of the shroud 7 and can guide the shroud 7 to the lower side is provided. One end side of the lateral cover 4 is bent inward to be integrally provided, or the lateral cover 4 is integrally fixed to the inner side surface of the one end of the step lateral cover by welding.

Therefore, during operation, the heat generated in the engine E becomes hot air due to the wind generated from the ring gear of the flywheel 13, and a part of the hot air is directed to the front side of the shroud 7 of the cooling fan 8 in FIG. Although it is sent out as indicated by b, it is blocked by the partition plate 14 and flows out while being guided downward, and the partition plate 14 is integrally provided on the inner side surface of the step lateral cover 4. Therefore, hot air can be prevented from being sent to the front side of the shroud 7, and the cooling fan 8 can effectively take in outside air from the intake port 3 into the shroud 7 and effectively cool it while sending it to the hydrostatic drive mechanism HST. be able to.

Since the partition plate 14 is integrally provided on the inner side surface of the step lateral cover 4, the belt 11 can be replaced.
When performing maintenance on the periphery thereof, it can be attached and detached together with the step lateral cover 4 so as not to get in the way. Further, if a circular duct 28 is provided on the inner peripheral portion of the intake port 3, outside air can be removed. It can be effectively taken into the shroud 7 from the intake port 3,
When attaching and detaching the step side cover 4, the circular duct 28
Can be quickly and easily attached to the shroud 7.

FIGS. 7 and 8 show another example, in which the intake passage 29 provided inside the engine cover 24 of the above-mentioned embodiment.
A radiator 23 having a radiator fan 31 is disposed inside the terminal side intake port 30 of the same as in the above-mentioned embodiment, and the filter mounting plate F has a box-shaped front face and has a lattice shape. Four large openings 32 are provided, and the bent mounting surfaces 33 and 34, 34 are provided above and on both sides of the back surface.
And both engaging pieces 3 that can be engaged with an engaging hole 35 provided below the intake port 30.
7, a punch metal 37 and a dustproof filter 38 are attached to the outside of the intake port 30, and the filter mounting plate F is attached to the outer surface of the dustproof filter 38, as shown in FIG. Inner peripheral edge 3 of each opening 32 of
2a are brought into contact with each other, both engaging pieces 36, 36 are engaged with the engaging holes 35, and both bolts 39 with knobs are inserted into the attaching surface 33 to attach the filter to the outside of the intake port 30. A plate F is attached, and a front end portion of a radiator duct 40 attached to the front surface of the radiator 23 is continuously provided on the outer periphery of the filter attachment plate F on the front side with a packing 41 interposed therebetween.

Therefore, a large amount of dust is removed from the punch metal 37.
As a result, small dust can be blocked by the dust filter 38, and the dust filter 38 is pressed by the inner peripheral edge 32a of each opening 32 of the filter mounting plate F so that the dust filter 38 is sucked to the radiator duct 40 side. Will be prevented.

[0014]

As described above, according to the present invention, when the combine is operated, the heat generated in the engine E becomes hot air due to the wind generated from the ring gear of the flywheel 13, and a part of the hot air is shroud of the cooling fan 8. Although it is sent to the front side of 7, it can be guided to the other side by being blocked by the partition plate 14. Moreover, since the partition plate 14 is integrally provided on the inner side surface of the step lateral cover 4, hot air is blown out. Since it can be effectively prevented from being sent to the front side of the shroud 7, the cooling fan 8 satisfactorily takes the outside air into the shroud 7 from the intake port 3, and the hydrostatic drive mechanism H.
It becomes possible to cool the ST with good cooling efficiency,
It has a feature that it can be suitably implemented with a simple structure.

[Brief description of drawings]

FIG. 1 is a side view schematically showing a combine.

FIG. 2 is a side view showing a part of FIG. 1 in an enlarged manner.

FIG. 3 is a plan view showing a part of FIG.

FIG. 4 is a plan sectional view showing a main part of an embodiment of the present invention.

FIG. 5 is a side view showing a part of FIG. 4;

FIG. 6 is a plan sectional view showing a part of FIG. 4 in an exploded manner.

FIG. 7 is a plan sectional view showing another example.

FIG. 8 is a perspective view showing a part of FIG. 7;

[Explanation of symbols]

 1 Driver's Seat 2 Step 3 Intake Port 4 Step Horizontal Cover 5 Mission Case HST Hydrostatic Drive Mechanism 6 Input Shaft 7 Shroud 8 Cooling Fan 9 Input Pulley 10 Output Shaft 11 Belt 12 Engine Pulley 13 Flywheel 14 Partition Plate

Claims (1)

[Claims] 1. A step lateral cover 4 having an intake port 3 is erected on the inner side of the step 2 in front of the driver's seat 1, and the intake port is provided from a hydrostatic drive mechanism HST mounted on an upper part of a mission case 5. In the input shaft 6 protruding to the 3 side,
A cooling fan 8 for cooling the hydrostatic drive mechanism HST covered with the shroud 7 and an input pulley 9 are mounted, and the output pulley 10 on the inner side of the engine E mounted at the rear of the step 2 is provided with the input pulley. In a combine constituted by attaching an engine pulley 12 transmitting a belt 11 and a flywheel 13 facing the outer peripheral side of the shroud 7 to 9, a flywheel 13 and a cooling fan 8 are provided.
And a partition plate 14 capable of preventing hot air from the flywheel 13 from flowing into the shroud 7, and the partition plate 14 is provided on the inner surface of the step lateral cover 4. Upper side cooling unit for the transmission case