JP2012111392A - Combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a combine harvester capable of preventing degradation of the cooling capacity caused by dust while improving engine cooling efficiency.SOLUTION: A sub radiator (5) is provided outside an engine (2) mounted on the upper side of a combine harvester frame (1). A second filter (59a) is provided outside the sub radiator (5). A main radiator (3) is provided on the front side of the engine (2) offset to the inner side of the combine harvester from the sub radiator (5). A first filter (58a) is provided on the outer side of the main radiator (3). A main cooling fan (19) is provided inside the main radiator (3). A sub cooling fan (20) is provided inside the sub radiator (5). A drive path is provided, which drives the sub cooling fan (20) from ends on the outer side of the combine harvester body of a crank shaft (21) projected to right and left sides of the engine (2) to output the rotation-driving force, and drives the main cooling fan (19) from ends inside the combine harvester of the crank shaft (21) bypassing the engine (2).

Description

  The present invention relates to a combine.

  As shown in Patent Document 1, a conventional combine is equipped with a threshing device on the upper part of the machine main frame, a cockpit and an engine are provided on the sides of the threshing apparatus, The harvesting device is used to harvest and transport the cereal, and the threshing device is supplied and threshed. During the harvesting and harvesting operation, cereal grains are supplied to the threshing device almost constantly, and the engine that generates the driving force necessary for the threshing process is operated in a high load state. Therefore, an excessive temperature rise of the engine is prevented by the radiator.

  Further, during harvesting and harvesting work, dust such as swarf and dust generated from the culm being harvested and conveyed by the harvesting device is rolled up backward by the traveling wind. Therefore, a dust-proof net is provided outside the engine room, and a radiator is provided inside the dust-proof net, thereby preventing the radiator from being clogged with dust.

Japanese Patent Application No. 2003-419741

  It is an object of the present invention to provide a combine that improves the cooling efficiency of the engine but does not cause a decrease in cooling capacity due to dust.

The problems of the present invention are solved by the following technical means.
According to the first aspect of the present invention, the traveling device (40) is provided on the lower side of the body frame (1), the cutting device (42) is provided on the front side of the body frame (1), and the upper side of the body frame (1). Is mounted with an engine (2), a sub-radiator (5) is provided outside the engine (2), a second filter body (59a) is provided outside the sub-radiator (5), and the front side of the engine (2) Is provided with a main radiator (3) biased to the inner side of the machine body than the sub-radiator (5), a first filter body (58a) is provided outside the main radiator (3), and the main radiator (3) A main cooling fan (19) is provided on the inner side, a sub-cooling fan (20) is provided on the inner side of the sub-radiator (5), and a crankshaft that outputs rotational driving force projecting to the left and right sides of the engine (2) is provided. (21) Outside the fuselage The sub cooling fan (20) is driven from the end portion of the crankshaft, and the drive path for driving the main cooling fan (19) bypassing the engine (2) from the inner end portion of the crankshaft (21) is provided. The combine is characterized by the following.

  The invention according to claim 2 is characterized in that the projection area of the main radiator (3) in the side view of the airframe is set larger than the projection area of the sub radiator (5) in the side view of the airframe. Combined.

  The invention according to claim 3 is characterized in that the rotational axis position of the sub cooling fan (20) is arranged at a position higher than the rotational axis position of the main cooling fan (19). Or it was set as the combine of 2 description.

  The invention according to claim 4 is the combine according to claim 1, 2 or 3, wherein the sub-radiator (5) is arranged on the outer side in the left-right direction with respect to the outer end portion of the body frame (1). .

  According to a fifth aspect of the present invention, the sub-radiator (5) and the sub-cooling fan (20) are integrally attached to a radiator support (4) provided on the body frame (1), and the radiator support (4 The combine according to any one of claims 1 to 4, wherein the combine is configured to be detachable from the body frame (1).

  The invention according to claim 6 is the combine according to claim 5, wherein the radiator support base (4) is arranged in a rear part of the engine (2).

  According to the first aspect of the present invention, the cooling water is cooled by the main radiator (3) and the sub radiator (5), so that the cooling efficiency is improved and the crankshaft (21) that outputs the driving force from the engine (2). ) Is provided to drive the main cooling fan (19) by bypassing the engine (2) from the inner end of the fuselage, and the main radiator (3) is arranged to be biased to the inner side of the sub-radiator (5). Therefore, the dust and soot generated from the cutting device (42) and flowing backward while floating are difficult to adhere to the first filter body (58a) provided outside the main radiator (3), and the first filter body (58a ) To prevent a decrease in the intake air volume of the main cooling fan (19) due to adhesion of dust or the like, and maintain the cooling efficiency of the main radiator (3).

  According to the invention described in claim 2, in addition to the effect of the invention described in claim 1, the projected area of the main radiator (3) is set larger than the projected area of the sub radiator (5) in the side view of the aircraft. By disposing in front of (2), the main radiator (3), which is less susceptible to the heat of the engine (2), can cool the cooling water efficiently, and more effectively the engine ( 2) can be cooled.

  According to the invention of claim 3, in addition to the effect of the invention of claim 1 or 2, the rotational axis position of the sub cooling fan (20) is set to be more than the rotational axis position of the main cooling fan (19). Since it is set at a high position, the cooling air of the sub cooling fan (20) is introduced at a high position where there is relatively little dust, and the cooling efficiency of the sub radiator (5) is reduced by dust adhering to the second filter body (59a). And the cooling efficiency of the engine (2) can be further increased.

  According to the invention of claim 4, in addition to the effect of the invention of claim 1 or 2 or 3, the sub-radiator (5) is arranged on the outer side in the left-right direction with respect to the outer end portion of the body frame (1). When draining the cooling water during the maintenance work, the cooling water is not applied to the body frame (1), so that the drainage work can be efficiently performed, and the efficiency of the maintenance work is improved.

  According to the invention described in claim 5, in addition to the effect of the invention described in any one of claims 1 to 4, the side of the engine (2) can be opened by removing the radiator support base (4). This improves the efficiency of maintenance work of the engine (2).

  According to the invention described in claim 6, in addition to the effect of the invention described in claim 5, maintenance of the front part of the engine (2) body is performed while the radiator support base (4) is attached to the body frame (1). This improves the efficiency of maintenance work.

It is a side view of a radiator. It is a top view of a radiator and an engine. It is a top view of a radiator. It is a power transmission diagram. It is a side view of a combine. It is a top view of a combine.

Hereinafter, embodiments of the present invention will be described with reference to examples shown in the drawings.
As shown in FIGS. 6 and 7, the combine for carrying out the present invention is provided with a traveling device 40 below the fuselage frame 1, a threshing device 41 above the fuselage frame 1, and a front side of the threshing device 41. A grain tank 43 is provided on the right side of the threshing device 41 to store the grain threshed by the threshing device 41, and a control unit 44 is provided with a lever-shaped speed change operation tool or the like on the front side of the grain tank 43. And a discharge device 45 for discharging the grain to the outside is provided on the rear side of the Glen tank 43.

The engine 2 is mounted on the body frame 1 at the lower front side of the Glen tank 43.
FIG. 2 is a plan view of the fuselage, and the right side is the front of the fuselage. As shown in the figure, the main radiator 3 is mounted on the lower portion of the control unit 44 at the front position of the engine 2, A radiator support base 4 is detachably attached to the body frame 1 with bolts and nuts at a position biased rearward from the center in the direction, and a sub-radiator 5 is attached to the radiator support base 4. The outer side of the main radiator 3 is covered with a radiator cover 58, and the outer side of the sub-radiator 5 is covered with a driving chamber cover 59. The radiator cover 58 is provided with a first filter body 58a, and the driving chamber cover 59 is provided with a second filter body 59a.

  The side projection area of the main radiator 3 is made larger than that of the sub radiator 5. The main radiator 3 that is less affected by the heat generated by the engine 2 is effectively cooled, and the cooling effect can be further enhanced by the sub-radiator 5 provided on the side of the engine 2.

  The upper inlet 3u of the main radiator 3 and the upper inlet 5u of the sub-radiator 5 are located at substantially the same height, and the first outlet pipe 11 and the upper junction pipe 8 are connected from the refrigerant outlet 35 on the lower engine 2 side. After that, the flow is divided back and forth, and is connected to the upper inflow port 3u by the second outflow pipe 12 that is linearly inclined upward, and is connected to the upper inflow port 5u by the third outflow pipe 13 that is also linearly inclined upward. With this configuration, bubbles do not hinder the flow of the refrigerant inside the main radiator 3 and the sub radiator 5.

  Further, the lower outlet 3d of the main radiator 3 is connected to the lower junction pipe 9 by the first inlet pipe 14, and the lower outlet 5d of the sub radiator 5 is connected to the lower junction pipe 9 by the second inlet pipe 15, and the lower junction pipe 9 and the third inflow pipe 16 is connected to the refrigerant inlet 36 on the engine 2 side. In the embodiment of FIG. 1, the lower junction pipe 9 is provided with the lower junction pipe 9 at the inclined portions of the first inflow pipe 14 and the second inflow pipe 15, so that bubbles do not accumulate. A lower junction pipe 9 is provided outside the frame 1 at the bottom of the pipe, and a drain cock 10 is provided in the lower junction pipe 9 so that the refrigerant can be completely drawn out to the tray.

The upper junction pipe 8 and the lower junction pipe 9 are arranged near the engine 2 to shorten the piping, and the refrigerant is distributed to the main radiator 3 and the sub radiator 5 to efficiently cool the pipe.
A hydraulic pump 6 and a starter 17 are mounted on the front side surface of the engine 2. However, since the main radiator 3 is located in front of the engine 2, it is easy to perform maintenance work.

  Suction air from an air cleaner 18 provided at the upper part of the engine 2 is guided to the back side of the sub radiator 5 by an air suction hose 7. When maintenance is performed on the turbine 29 and the alternator 30 on the back side of the sub-radiator 5, the radiator support base 4 and the radiator support base 4 are removed from the machine body frame 1 for the work. At that time, the drive pulley and tension pulley of the sub suction fan 20 are attached to the radiator support base 4, and the sub radiator 5 can be removed together with the radiator support base 4 simply by removing the transmission belt.

  The main radiator 3 is provided inside the outermost position of the body frame 1, and the sub radiator 5 is provided outside the body frame 1. Therefore, in maintenance work of the prime mover, each refrigerant pipe and the refrigerant of the main radiator 3 and the sub radiator 5 connected by each refrigerant pipe are discharged from the drain cock 10 of the lower junction pipe 9 provided in the vicinity of the sub radiator 5. At this time, the refrigerant can be easily discharged without causing the machine body frame 1 to get in the way.

A main suction fan 19 and a main dust removal fan 38 are provided inside the main radiator 3. A sub suction fan 20 is provided inside the sub radiator 5.
The transmission configuration of the main suction fan 19, the main dust removal fan 38, and the sub suction fan will be described with reference to FIG.

  A main cooling fan 19 and a main dust removal fan 38 are provided inside the main radiator 3. The rotating shaft 38a for dust removal of the main dust removing fan 38 is supported by a cylinder 57 fixed to a frame (not shown), and the rotating shaft 19a for cooling of the main cooling fan 19 is supported inside the rotating shaft 38a for dust removal which is a hollow shaft. ing. The rotational driving force from the engine 2 is input to the pulleys 38b and 19b at the ends of the dust removing rotary shaft 38a and the cooling rotary shaft 19a.

  In order to transmit the rotation of the crankshaft 21 of the engine 2 to the main suction fan 19, it is supported by a pulley 21a rotating integrally with the crankshaft 21 of the engine 11 and an intermediate shaft 25 provided at a position facing the pulley 21a. A pulley 25a that rotates integrally with the intermediate shaft 25, and a radiator rotation shaft 19a that is pivotally supported by the intermediate shaft 25 and provided at a position facing the pulley 25c that rotates integrally with the intermediate shaft 25. Belts 23 and 46 are respectively wound around pulleys 19b that rotate integrally with the cooling rotary shaft 19a.

  In order to transmit the rotation of the crankshaft 21 of the engine 2 to the main dust removing fan 38, a pulley 21a that is supported by the crankshaft 21 of the engine 2 and rotates together with the crankshaft 21 is provided at a position facing the pulley 21a. A pulley 25a that is supported by the intermediate shaft 25 and rotates integrally with the intermediate shaft 25; a pulley 25b that is supported by the intermediate shaft 25 and rotates integrally with the intermediate shaft 25; and a position facing the pulley 25b. A pulley 27a that is supported by the intermediate shaft 26 of the gear box 27 and rotates together with the intermediate shaft 26, and a pulley 27a that is supported by the intermediate shaft 28 of the gear box 27 and rotates together with the intermediate shaft 28. A pulley 38b that is supported by a dust rotation shaft 38a provided at a position facing the pulley 27b and rotates integrally with the dust rotation shaft 38a is provided with a belt 2 respectively. , 39 and 48 is wound belt hook.

  The gear box 27 meshes with a gear 27b supported by the input intermediate shaft 26 and a gear 27b supported by the output intermediate shaft 28, for example, when the input pulley 26a rotates clockwise. The pulley 28a on the output side rotates counterclockwise.

  With this configuration, the rotation of the crankshaft 21 of the engine 2 is transmitted to the rotation shaft 38a in which the pulley 38b and the main dust removal fan 38 are integrated in the rotation direction opposite to the crankshaft 21, and the main dust removal fan 38 rotates. Driven.

  The belt 48 in the transmission path of the main cooling fan 19 is provided with a cooling clutch 47, and the belt 46 in the transmission path of the main dust removal fan 38 is provided with a dust removal clutch 49, respectively. Thus, either one of the clutches is alternatively connected.

  With these configurations, the main cooling fan 19 is driven, outside air is introduced from the first filter body 58a, the main radiator 3 is cooled, and the main dust removing fan 38 is switched to the driving state. It is possible to remove dust that is blown from the inside to the outside and adheres to the outer surface of the first filter body 58a, and the cooling efficiency of the main radiator 3 can be increased.

  In order to transmit the rotation of the crankshaft 21 of the engine 2 to the sub cooling fan 20, a pulley 21 b is provided integrally with the crankshaft 21 at the end of the engine crankshaft 21 opposite to the pulley 21 a. A belt 55 is wound around a pulley 51a integral with the pulley 21b and the water pump drive shaft 51, and a pulley 53a integral with the generator drive shaft 53, and the pulley 51b integral with the water pump drive shaft 51 and the drive of the sub cooling fan 20 are driven. A belt 56 is wound around a pulley 54a provided at the end of the shaft 54.

  When it is detected that the main shift lever is operated forward after the auger is housed by a combiner, for example, with a combiner, the main dust removal fan is operated for 3 seconds. 38, or during the harvesting operation, the main cooling fan 19 is driven for 5 minutes, and then the main dust removal fan 38 is driven for 3 seconds to remove dust adhering to the outer surface of the first filter body 58a.

DESCRIPTION OF SYMBOLS 1 Airframe frame 2 Engine 3 Main radiator 4 Radiator support stand 5 Sub radiator 19 Main cooling fan 20 Sub cooling fan 21 Crankshaft 40 Traveling device 42 Cutting device 58a First filter body 59a Second filter body

Claims (6)

  A traveling device (40) is provided below the fuselage frame (1), a cutting device (42) is provided on the front side of the fuselage frame (1), and an engine (2) is mounted on the upper side of the fuselage frame (1). A sub-radiator (5) is provided outside the engine (2), a second filter body (59a) is provided outside the sub-radiator (5), and the front side of the engine (2) is connected to the sub-radiator (5). The main radiator (3) is provided by being biased inside the machine body, the first filter body (58a) is provided outside the main radiator (3), and the main cooling fan (19) is provided inside the main radiator (3). A sub-cooling fan (20) is provided inside the sub-radiator (5), and an end of the crankshaft (21) on the outer side of the crankshaft (21) that outputs the rotational driving force projected to the left and right sides of the engine (2) From said sub cooling Driven § down (20), characterized in that a drive path for driving the main cooling fan (19) from the inboard end to bypass the engine (2) of the crank shaft (21) Combine.   The combine according to claim 1, wherein the projection area of the main radiator (3) in the side view of the airframe is set larger than the projection area of the sub radiator (5) in the side view of the airframe.   The combine according to claim 1 or 2, wherein a rotational axis position of the sub cooling fan (20) is arranged at a position higher than a rotational axis position of the main cooling fan (19).   The combine according to claim 1, 2 or 3, wherein the sub-radiator (5) is arranged on the outer side in the left-right direction with respect to the outer end portion of the body frame (1).   The sub-radiator (5) and the sub-cooling fan (20) are integrally attached to a radiator support (4) provided on the body frame (1), and the radiator support (4) is attached to the body frame (1). The combine according to any one of claims 1 to 4, wherein the combine is detachable.   The combine according to claim 5, characterized in that the radiator support (4) is arranged in a rear part of the engine (2).

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