JPH0143526Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention includes, for example, a grain header having a reel for raking in uncut grain culms, a cutting blade, etc., a supply chamber having a reaped grain culm supply belt installed therein and connected to the header; The threshing unit is equipped with a threshing rotating body such as a handling cylinder and a beater, and a grain sorting mechanism and is connected to the supply chamber, and the harvested grain culm is continuously fed into the handling chamber of the threshing unit to thresh the grain. This relates to a combine harvester that
As shown in Japanese Patent No. 149127, there was a technique for providing a hydraulic oil tank and an oil cooler.

However, in the prior art, an oil cooler is provided close to the engine and radiator, and a hydraulic oil tank is provided on the cooling air suction side above the radiator, so it is operated by the air sucked in from the ventilation port toward the radiator. The oil tank is cooled, but since outside air was taken in from a high position and discharged to a low position, it became a cooling air path that goes against the natural convection of air, making it easier to improve the cooling function and reduce the blowing force of the cooling fan. This is not possible, and when the engine is stopped, the hot air from the engine, radiator, and oil cooler flows back into the upper ventilation hole by natural convection and heats the hydraulic oil tank, so when the engine is restarted after being stopped for a short time. However, there were functional and safety problems, such as the tendency to operate with the oil temperature in the hydraulic oil tank elevated.

However, the present invention is a device that is equipped with an operating shaft tank that supplies hydraulic oil to various hydraulic devices mounted on the combine machine, and is also equipped with an oil cooler that cools the temperature of the hydraulic oil. In addition to installing a side cover that opens to the side and closes the side, the oil cooler is placed close to the top of the hydraulic oil tank, and the exhaust port for discharging air from the cooling fan is installed on the side facing the oil cooler. It is characterized by being provided on the cover.

Therefore, since a cooling air path is formed by the side cover that takes in low-temperature outside air from a low position and exhausts high-temperature exhaust air from a high position, the cooling fan blows air to promote natural convection of the air. can be made to act,
It is easier to improve the cooling function and reduce the blowing force of the cooling fan than before, and it is possible to cool the hydraulic oil more efficiently with less noise than before, and the cooling fan stops in conjunction with the engine etc. The hydraulic oil tank and oil cooler are cooled by natural convection even when the combine harvester is stopped for a short period of time, so even if the combine harvester is restarted after being stopped for a short period of time, the combine harvester can be operated at the appropriate oil temperature. It can be handled safely by preventing work from being restarted under such conditions.

An embodiment of the present invention will be described below in detail with reference to the drawings. Fig. 1 is a side view of the whole, and Fig. 2 is a plan view of the same, in which 1 is a machine base equipped with a front driving wheel 2 and a rear steering wheel 3, and 4 is a threshing mechanism 5 and a grain sorting mechanism. 6, a threshing section mounted on the machine base 1; 7, a grain tank for storing the grains of the threshing section 4 taken out via the grain lifting cylinder 8; 9, a hydraulic cylinder 10 installed in the front of the lower part of the threshing section 4; 11 is a driver's seat 12 and a steering handle 1;
3 and is a driver's cab fixedly installed in front of the upper part of the threshing section 4.

The reaping section 9 is composed of a grain header 14 for receiving uncut grain culms, and a supply chamber 15 connected to the rear center of the header 14 for supplying the reaped grain culms to the threshing section 4. The grain header 14 is equipped with an uncut grain culm raking reel 16, a reciprocating cutting blade 17, and a grain culm raking auger 18, and a reaped grain culm supply belt 19 is installed in the supply chamber 15. The structure is such that the cut grain culm fed from the center of the grain header 14 is fed to the threshing section 4 by the belt 19.

As shown in FIG. 3, the threshing processing mechanism 5 is installed inside the handling room 20, and is a threshing processing rotation in which a plurality of handling barrel shafts 21, 22, 23 are horizontally suspended in the front and back, orthogonal to the direction of movement of the machine. The first to third handling trunks 2 which are the body
4, 25, 26, and each of these handling cylinders 24, 25, 2
Beater shafts 27 and 28 are located approximately at the upper center of the space between 6 and 6, respectively.
The first and second beaters 29, 30, which are threshing processing rotors, are suspended horizontally through the threshing drums 24, 25,
26, respectively arranged on the lower circumferential side.
Concave 31, 32, 33 and each beater 2 mentioned above
It consists of beater grates 34 and 35 provided at the lower part of the concaves 9 and 30, respectively, and interposed between the feed end and start ends of the front and rear concave 31, 32, 33.

In addition, a swing sorting board 38 is horizontally suspended above the first and second conveyors 36 and 37 and swings back and forth.
The swinging sorting mechanism 6 is made up of a winnowing fan 39 that feeds sorting air to the sorting board 38, and a grain pan 40 serving as a feed pan, a chaf sheave 41, and a grain sheave 42 are moved to the swing sorting board 38.
Prepare for.

Further, the grain tank 7 is provided with an internal discharge auger 43 at the bottom for taking out the grains to the outside, and an engine chamber 4 in which an engine 44, a hydraulic oil tank 45 for a hydraulic system, etc. are installed at the rear of the tank 7.
6 are installed in succession.

As shown in FIGS. 4 to 7, the engine 4
4 is mounted on the middle upper part of the threshing section 4 via a base frame 47, and a radiator 48 for engine cooling is provided on the right side of the engine 44, and a cooling fan is installed between the radiator 48 and the engine 44. 49 have been deployed. In addition, a cooling tube 51 for hydraulic piping is provided in the suction hood 50 on the right outside of the radiator 48,
A cooling air suction port 52 is provided on the right side of the hood 50, and the outside of the suction port 52 is covered with a cylindrical dustproof net 53. The dustproof net 53 is operatively connected to a motor 56 via an airtight frame 54 and a rotating shaft 55, and is arranged so that the net 53 is rotated by the drive of the motor 56. Furthermore, the dustproof net 5
A dust removal port 58 formed by a dust removal cover 57 is disposed at a lower position of the dust removal cover 57, and the dust removal port 58 is communicated with a suction blowing chamber 60 between the radiator 48 and the cooling fan 49 via a dust removal suction passage 59. When the cooling fan 49 rotates, the dustproof net 53
The dust attached to the outer circumferential surface of the dust removal port 58 is removed by its suction force.

Further, the radiator 48 is connected to the base frame 47.
The radiator 48 is fixedly supported through a bracket 61 and a mounting plate 62, and the radiator 48 is arranged so as to protrude from the right threshing side plate 63 of the threshing section 4 to the outside of the machine body.
4 is located outside the side plate 63, the cooling water from the radiator 48 can be directly drained to the right outside of the threshing section 4 without staining the upper surface of the threshing section 4 with the cooling water of the radiator 48. It is configured as follows.

Furthermore, one end of the drain hose 66 is connected to the oil pan 65 of the engine 44, and the drain port 67 at the other end of the drain hose 66 is made to face the right outside of the threshing section 4, so that the engine oil in the oil pan 65 can be drained. The structure is such that the extraction can be performed on the right outer side of the threshing section 4.

On the other hand, the hydraulic oil tank 45 is mounted at the rear of the engine 44 above the threshing section 4, and a frame 68a is mounted on the right outside of the threshing section 4.
and the hydraulic oil tank 4 via the mounting frame 68b.
5 is fixedly supported. Further, the tank 45 is equipped with an oil filter 69, an oil cooler 70, etc., and the oil cooler is attached to a side cover 71 of the engine compartment 46 via a bracket 72 so that the oil cooler 70 is disposed almost directly above the tank 45. 70 is installed. Furthermore, a cooling exhaust port 73 is provided in the cover 71, and a cooling fan 75 driven by a motor 74 is provided in the cooler 70.
The cooling air of the cooler 70 sucked from the lower part of the hydraulic oil tank 45 is supplied to the exhaust port 73.
It is configured to allow more exhaust air to escape from the aircraft. The cooler 70 is interposed between oil return pipes 77a and 77b from various hydraulic devices such as the travel hydraulic transmission 76 mounted on the aircraft body or the hydraulic cylinder 10, and controls the oil temperature of the return oil from the various hydraulic devices to the fan. The fan 75 is designed to cool the tank 45 by the cooling air sucked in from below the tank 45.
The structure is such that heat dissipation from the tank 45 is promoted by flowing the outer wall of the tank 45 and around the cooling fan 78 formed therein.

As is clear from the above configuration and FIG. 7, various hydraulic devices 10, 76 mounted on the combine machine body
An oil cooler 70 includes a hydraulic oil tank 45 for supplying hydraulic oil and cools the temperature of the hydraulic oil.
In the apparatus, a side cover 71 is installed to open the bottom of the hydraulic oil tank 45 to the outside of the machine and close the side part, and an oil cooler 70 is disposed close to the top side of the hydraulic oil tank 45. An exhaust port 73 for discharging the air from the cooling fan 75 is provided in the side cover 71 facing the oil cooler 70.

The present embodiment is constructed as described above, and uncut grain culms are introduced into the grain header 14 via the reel 16, and the root of the uncut grain culms is cut by the cutting blade 17.
At the same time, the reaped grain culm is fed from the center of the header 14 to the supply chamber 15 via the culm scraping auger 18, and the reaped grain culm is transferred to the threshing section 4 by the reaped grain culm supply belt 19. The grains are fed to the grain handling chamber 20 and sequentially threshed by each handling cylinder 24, 25, 26, and the shattered grains are sorted while the chaff sieve 41 and grain sieve 42 are falling, and only the grains are sent to the grain tank 7. The grains are taken out through a frying tube 8.

During this work, the cooling fan 75 of the cooler 70
The cooling air taken in from the lower part of the tank 45 flows around the outer wall of the tank and around the fins 77 before reaching the cooler 70, promoting heat dissipation from these, so that the cooling air not only flows through the cooler 70 but also around the fins 77. This tank 45 is also cooled. Note that since the return hydraulic oil that returns to the oil preparation tank 45 passes through the cooling tube 51 and the cooler 70, two stages of cooling are performed on the way back, further enhancing the cooling effect.

In addition, since the drain port 64 of the radiator 48 is located in a position that protrudes outward from the threshing section 4, even if the oil falls when draining the oil, it will not stain the top surface of the threshing section 4, and therefore cooling will be prevented. To easily and cleanly perform water exchange work without any trouble.

Furthermore, by disposing the radiator 48, hydraulic oil tank 45, oil cooler 70, etc. on the outside of the threshing section 4, the threshing section 4 is not only protected from water or oil leaks, but also facilitates the flow of cooling air. This can improve the cooling effect.

As is clear from the above embodiments, the present invention is equipped with a hydraulic oil tank 45 that supplies hydraulic oil to various hydraulic devices 10 and 76 mounted on the combine harvester body, and an oil cooler 70 that cools the temperature of the hydraulic oil. In the device, a side cover 71 is installed that opens the bottom of the hydraulic oil tank 45 to the outside of the machine and closes the side, and an oil cooler 70 is disposed close to the top surface of the hydraulic oil tank 45, and a cooling fan is installed. An exhaust port 73 for discharging the air 75 is provided on the side cover 71 facing the oil cooler 70, and a cooling air passage that takes in low-temperature outside air from a low position and discharges high-temperature exhaust air from a high position is provided on the side. cover 7
1, the air blowing from the cooling fan 75 can be applied to promote natural convection of air, making it easier to improve the cooling function and reduce the air blowing force of the cooling fan 75 compared to the past. The hydraulic oil tank 45 and the oil cooler 70 are cooled by natural convection even if the cooling fan 75 is stopped in conjunction with the engine etc. Therefore, even if the combine harvester is restarted after being stopped for a short time, the combine harvester can be operated at the appropriate oil temperature, which prevents the resumption of work when the oil temperature has abnormally risen, which was the case in the past, and allows safe handling. It has practical effects such as:

[Brief explanation of the drawing]

Fig. 1 is an overall side view of a combine harvester showing an embodiment of the present invention, Fig. 2 is a plan view of the same, Fig. 3 is an explanatory cross-sectional view of the same, Fig. 4 is a rear view of the same, and Fig. 5 is a main part of the combine harvester. FIG. 6 is an explanatory plan view of the radiator section, and FIG. 7 is an explanatory diagram of the hydraulic oil tank section. 10... Hydraulic device (hydraulic cylinder), 45...
Hydraulic oil tank, 70... Oil cooler, 71...
Side cover, 73...Exhaust port, 75...Cooling fan, 76...Hydraulic device (transmission device).

Claims (1)

[Scope of utility model registration request] Various hydraulic devices 10 mounted on the combine machine,
In an apparatus that is provided with a hydraulic oil tank 45 that supplies hydraulic oil to a hydraulic oil tank 76 and an oil cooler 70 that cools the temperature of the hydraulic oil, a side part that opens the bottom of the hydraulic oil tank 45 to the outside of the machine and closes the side part. cover 7
1, an oil cooler 70 is disposed close to the upper surface of the hydraulic oil tank 45, and an exhaust port 73 for discharging air from the cooling fan 75 is provided on the side cover 71 facing the oil cooler 70. A hydraulic tank device for a combine harvester, which is characterized by: