JP2008296687A - Motor part of combine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve efficiency of harvesting operation by effectively cooling a radiator cooling engine circulating water and an intercooler cooling engine intake air by reducing the problems of overheating of an engine and lowering of the output of the engine. <P>SOLUTION: Dustproof nets (25, 26) passing to the air to the outside of an engine cover (24) covering the engine (9) are arranged, the radiator (21) is arranged in the lower portion inside the dustproof nets (25, 26), and also the intercooler (22) is arranged in the upper rear portion inside of the dustproof nets (25, 26). Rotary suction air shielding plates (34, 35) are respectively arranged in a position corresponding to the outer portion of the radiator (21) and a position corresponding to the outer portion of the intercooler (22) in the dustproof nets (25, 26). <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

The present invention relates to a combine.

  The combine uses a diesel engine as the prime mover, and a radiator that cools the circulating water of the diesel engine and an oil cooler that cools the oil are stacked in the suction air area of the cooling fan that blows air toward the engine body. Japanese Patent Application Laid-Open No. 2004-133867 discloses a combine cooling device that cools and simultaneously cools a radiator with the same suction air that has passed through.

Further, Patent Document 1 discloses a combine dustproof device in which a dust shielding net provided in contact with a suction port of an engine cover is provided with a rotating suction shield plate to automatically drop and remove deposits.
JP 2004-98925 A JP 2002-59748 A

  In the combine cooling device described in Patent Document 1, the engine, the radiator, and the oil cooler can be cooled at the same time with a single cooling fan. However, when harvesting is performed during the daytime in midsummer, The air sucked by the cooling fan is heated by the cooler and the radiator cannot be cooled sufficiently, the engine is overheated, and the working efficiency is lowered. Further, when the cooling efficiency of the intake air by the intercooler decreases, there is a problem that the compression rate of the intake air decreases and the engine output decreases.

  Further, the combine dustproof device described in Patent Document 2 has a structure in which one rotating suction shielding plate is provided on the entire dustproof net, so that the dust removal effect is partially insufficient and the engine is overheated. become.

  Therefore, the present invention has an object to prevent the engine from being overheated by effectively cooling the radiator that cools the circulating water of the engine and the intercooler that cools the intake air of the engine.

The above object of the present invention is achieved by the following configuration.
That is, a dustproof mesh part (25, 26) that allows ventilation is provided in the outer part of the engine cover (24) that surrounds the engine (9), and a radiator (21) is provided in the lower part inside the dustproof mesh part (25, 26). And an intercooler (22) is arranged at the upper rear part inside the dustproof mesh part (25, 26), and a position corresponding to the outer part of the radiator (21) in the dustproof mesh part (25, 26) The power source of the combine is characterized in that a rotary suction wind shielding plate (34, 35) is provided at a position corresponding to the outer side of the cooler (22).

  With this configuration, the cooling air sucked into the radiator 21 and the intercooler 22 through the dust nets 25 and 26 of the engine cover 24 is shielded at predetermined intervals by the rotary suction air shielding plates 34 and 35. As a result, the dust adsorbed on the dust nets 25 and 26 falls.

  According to the present invention, the dust-proof net portions 25 and 26 through which the wind that cools the radiator 21 that radiates the cooling water that affects the performance of the engine and the intercooler 22 that cools the intake air pass are the rotary suction wind shielding plates 34. , 35 to effectively remove the dust, maintain high cooling efficiency, prevent engine 9 from over-heating and lowering engine output due to an increase in intake air temperature, and efficient harvesting even in high-temperature fields with a lot of dust Can be done well.

A combine which is an agricultural machine embodying the present invention will be described with reference to the drawings.
The entire combine is configured as shown in FIG. 1, and a cutting device 12 is provided in front of the airframe 10 having the crawler travel device 11. The cereals harvested by the reaping device 12 are transported rearward and upward by the feeding and transporting device, taken over by the threshing and threshing transporting device, supplied with the tip into the threshing device, and threshed. It is finely cut by the cutter 13 provided at the last part and discharged to the field.

  Above the machine body 10, a grain tank 14 for temporarily storing the grains threshed and sorted by the threshing device on the right side of the threshing device, and an operator on board the combine that is located in front of the grain tank 14. A steering operation unit 15 that executes various operations such as steering is configured.

  The steering operation unit 15 is provided with a steering lever 18 for performing a steering operation while traveling on the front side, and a pilot seat 19 on which a worker is seated on a driving box 20 on the rear side. An engine 9 is mounted in the prime mover box 20 to drive the crawler travel device 11 as well as drive each part of the reaping device 12 and the threshing device.

  A milling cylinder 16 is erected on the rear side of the grain tank 14, and a grain discharge auger 17 is connected to the upper end of the milling cylinder 16 in a bendable manner. When the grain amount in the grain tank 14 is full, the grain is discharged from the grain tank 14 to the outside by the whipped cylinder 16 and the grain discharge auger 17. The whipping cylinder 16 is configured to be turnable by an electric motor (not shown), and the grain discharge auger 17 is configured to be movable up and down by a hydraulic cylinder.

  And the grain discharge auger 17 is connected to the upper part of the whipping cylinder 16 and is integrally formed. When the grouting cylinder 16 is turned, the grain discharging auger 17 is also turned together. Further, the grain discharge auger 17 is expanded and contracted within a certain range so that the position of the discharge cylinder 8 is positioned above a grain tank mounted on a truck or the like.

  When the harvester configured as described above is moved forward and harvested, the culm harvested by the reaper 12 is transported rearward and upward by the supply and transport device, and transferred to the grain threshing and transporting device. The cereals handed over to the cereal threshing and conveying device are supplied to the threshing device on the tip side and threshed and sorted, and the threshed culm is finely cut by the cutter 13 and released to the field.

  The grain threshed by the threshing device is sent into the glen tank 14 and stored, but the full sensor notifies when the stored grain increases. Then, the worker who knows that the Glen tank 14 is full interrupts the cutting operation, brings the combine close to the truck stopped on the road, and the inside of the Glen tank 14 by the whipping cylinder 16 and the grain discharge auger 17. Transfer the grain into the grain tank on the truck.

  2 and 3 show the side part of the engine storage case provided at the lower part of the cockpit 19 of the combine. The radiator 21 occupying a large area is arranged on the lower side, and the intercooler 22 is arranged on the upper rear part thereof. An oil cooler 23 is arranged on the front side.

  The radiator 21 cools the circulating water for cooling the engine 9, the intercooler 22 air-cools the supercharged air supplied to the engine 9, and the oil cooler 23 lubricates the gear transmission section with oil in the transmission case 41. Air-cooled oil used for hydraulic operation.

  A cooling fan (not shown) driven by the engine 9 is a sufficiently large fan that sucks air to the engine 9 side through the radiator 21, the oil cooler 22, and the intercooler 23.

  The driving part cover (engine cover) 24 that covers the radiator 21, the intercooler 22, and the oil cooler 23 from the outside is provided with four dustproof nets 25, 26, 27, and 28. A reinforcing frame 29 is provided on the inner side of the driving part cover 24, and an electric motor 30 is mounted on the upper end of the reinforcing frame 29, and three gear shafts 36, 37, and 38 are pivoted from the top to the bottom. The upper gear shaft 36 is positioned substantially at the center of the dust-proof mesh portion 25 and fixes the shielding plate 34 and the gear 31 that is directly driven to rotate by the electric motor 30. The intermediate gear shaft 37 has a small diameter that meshes with the gear 31. An intermediate gear 32 is fixed, and a gear 33 that meshes with the shielding plate 35 and the intermediate gear 32 is fixed to the lower gear shaft 38 at a position substantially at the center of the dust-proof mesh portion 26.

  Accordingly, when the electric motor 30 is driven, the gear shafts 36, 37, and 38 are driven, and the shielding plates 34 and 35 are rotated to become dust-proof devices 47 and 48 that drop the dust and the like adhering to the dust-proof net portions 25 and 26. .

  4 and 5 show the power transmission configuration of the engine 9 mounted on the lower front side of the combine. An output pulley 43 is attached to the output shaft outside the flywheel 40 of the engine 9, and the power is transmitted by belt transmission to the input pulley 42 fixed to the input shaft of the hydraulic continuously variable transmission 41 mounted on the transmission case 49 disposed on the front side of the engine 9. The power is transmitted to the input pulley 45 of the work device drive case 44 disposed on the rear side of the engine 9 by belt transmission. In this way, by winding the power transmission belt around the output shaft of the engine 9 from the front and the back, the tension from the front and the rear of the engine 9 is balanced, and the vibration of the airframe can be reduced by suppressing the vertical vibration of the engine 9.

  Power is transmitted from the work device drive case 44 from the first output pulley 55 to the upper threshing drive pulley 57 by belt transmission, and power is transmitted from the second output pulley 56 to the rear sorting drive pulley (not shown) by belt transmission. is doing. Inside the threshing device, there are a swing shelf 51 and a tang 52, and the working device drive case 44 is arranged in a space located in front of the swing shelf 51 and in front of the tang 52, so that it fits well.

An operating valve 53 and an oil tank 54, which are integrated with electromagnetic switching valves 90, 91, 92 of the left rolling cylinder 93, the right rolling cylinder 94 and the pitching cylinder 95, are arranged below the Glen tank 14 at the side of the Kara 52. Therefore, the oil is cooled by the suction air of the tang 52. (See Figure 6)
FIG. 7 and FIG. 8 are enlarged views of the portion of step 60 that becomes a stepping platform when boarding the cockpit 19. A hydraulic control box 61 is mounted on the lower side of step 60 and an emergency provided in the hydraulic control box 61. The operation lever 62 of the manual valve 84 is provided so that it can be operated from the outside of the machine body. The emergency manual valve 84 is a valve that can manually operate the left rolling cylinder 93, the right rolling cylinder 94, and the pitching cylinder 95. Various operation valves are arranged in the hydraulic control box 61, and emergency manual operation can be easily performed.

  FIG. 9 is a view showing a lock release lever 58 for releasing the lock of the Glen tank 14 with respect to the airframe. A wire 63 connected to the lock release lever 58 is connected to a lock mechanism (not shown), and the lock release lever 58 is moved outward. When pulled, the lock mechanism is removed and the glen tank 14 is pulled out of the machine body so that the threshing apparatus can be maintained. A stopper 59 protruding within the rotation range of the lever 58 is provided on the glen tank 14 to prevent the lock mechanism from being damaged due to excessive pulling of the wire 63. The stopper 59 may be provided on either the back side (59a) or the front side (59b) of the lever 58.

Next, a hydraulic control circuit in this combine will be described with reference to FIG.
The pressure oil sucked from the oil tank 65 and sent out from the single hydraulic pump 66 is adjusted to a constant pressure by the main relief valve 67 and sent to the traveling system hydraulic circuit 69 via the relief valve 68. The flow branches to the flow to the relief valve 71 side of the hydraulic circuit 70.

  First, the pressure oil sent to the traveling system hydraulic circuit 69 is operated by electromagnetic switching valves 76 and 77 that operate the left and right traveling clutch cylinders 72 and 73 and electromagnetic proportional valves 78 and 79 that operate the left and right brake cylinders 74 and 75. It is sent to.

  The pressure oil sent to the relief valve 71 side is sent to the proportional flow rate control valve 81 of the work system hydraulic circuit 70 and the electromagnetic switching valve 82 of the work machine by the diversion valve 80, and the cutting cylinder 87 and the auger by the electromagnetic valves 85 and 86. Cylinder 88 is controlled. An emergency manual valve 84 is provided in the middle of the electromagnetic switching valve 82 to stop the pressure oil sent to the electromagnetic valves 85 and 86 in the event of a failure or the like and increase the oil sent to the vehicle body control circuit 89.

From the proportional flow rate control valve 81, hydraulic pressure oil is supplied to the cutting cylinder 87 and the auger cylinder 88 and pressure oil is supplied to the vehicle body control circuit 89.
In the vehicle body control circuit 89, the left rolling cylinder 93, the right rolling cylinder 94, and the pitching cylinder 95 provided between the machine body 10 and the crawler traveling device 11 are controlled by the electromagnetic switching valves 90, 91, 92.

  On the supply side of the hydraulic pump 66, oil is also sent to the hydraulic continuously variable transmission 41 that changes the traveling speed.

Side view showing the entire combine of the embodiment of the present invention Partially enlarged side view of combine Partially enlarged side sectional view of the combine Partially enlarged side sectional view of the combine Partially enlarged plan view of a combine Partially enlarged side sectional view of the combine Partially enlarged plan view of a combine Partially enlarged front sectional view of the combine Partially enlarged side sectional view of the combine Combined hydraulic control circuit diagram

Explanation of symbols

21 Radiator 22 Intercooler 24 Driving part cover (engine cover)
25, 26 Dust-proof mesh part 34, 35 Suction wind shielding plate

Claims (1)

A dust-proof mesh part (25, 26) that allows ventilation is provided in the outer part of the engine cover (24) that surrounds the engine (9), and the radiator (21) is arranged in the lower part inside the dust-proof mesh part (25, 26). In addition, an intercooler (22) is arranged at the upper rear part inside the dustproof mesh part (25, 26), and a position corresponding to the outer part of the radiator (21) in the dustproof mesh part (25, 26) and the intercooler ( 22) A combine driving unit characterized in that a rotary suction wind shielding plate (34, 35) is provided at a position corresponding to the outer side of 22).

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