JP2016140314A - combine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a combine having a constitution hardly propagating suction sound of cooling air and operation sound of a cooling fan to a driver seat etc.SOLUTION: The combine includes: a combine body; a reaping part; a radiator 30; a cooling fan 83; a shroud 40; and a sound insulation member 50. The reaping part is arranged in a front part of the combine body and reaps grain culms. The radiator 30 cools cooling water of an engine. The cooling fan 83 cools cooling water in the radiator 30 by cooling air generated by suction of outer air. The shroud 40 is arranged between the radiator 30 and the cooling fan 83, is formed with a suction hole 41 allowing cooling air to pass, and guides the cooling air to the radiator 30. The sound insulation member 50 is attached near the suction hole 41 of the shroud 40 so as to protrude to an engine side from an engine side face of the shroud 40 and is arranged on a rear side of the combine body with respect to the center of the suction hole 41.SELECTED DRAWING: Figure 6

Description

  The present invention mainly relates to a combine including a shroud for efficiently applying cooling air to a radiator.

  Conventionally, as shown in Patent Document 1, a radiator is disposed outside a cooling fan provided in an engine or the like, and a combiner that cools cooling water in the radiator by applying outside air (cooling air) sucked by the cooling fan to the radiator. It has been known. In the combine of Patent Document 1, a shroud is disposed between the cooling fan and the radiator. The shroud can guide the cooling air so that the cooling air sucked from the outside efficiently hits the radiator.

  Similar to Patent Document 1, the combine of Patent Document 2 includes a cooling fan, a radiator, and a shroud. The radiator is disposed in the vicinity of the intake duct formed on the side surface of the combine. The cooling fan sucks outside air (cooling air) through the intake duct. A dust-proof net is attached to the intake duct to prevent traps and the like from entering the combine. The combine of Patent Document 2 is provided with a sound insulation member on the outside of the dustproof net in order to suppress engine noise leaking from the protective net.

JP 2006-254799 A Japanese Patent Laid-Open No. 10-103059

  By the way, in the vicinity of the cooling fan and the shroud, cooling air suction sound, cooling fan operation sound, and the like are generated. Since a driver's seat is generally provided above the cooling fan, noise may be transmitted to an operator sitting on the driver's seat and the operator may feel uncomfortable.

  However, Patent Document 1 does not describe any configuration for preventing the suction sound of the cooling air and the operation sound of the cooling fan from being transmitted to the driver seat.

  In Patent Document 2, it is engine sound that is assumed as noise, not cooling air suction sound or cooling fan operation sound. Further, when a sound insulation member is provided outside the combine as in Patent Document 2, noise transmitted to the outside of the combine can be suppressed, but noise transmitted to the combine's driver's seat or the like cannot be suppressed.

  The present invention has been made in view of the above circumstances, and a main object of the present invention is to provide a combine having a configuration in which the suction sound of the cooling air and the operation sound of the cooling fan are not easily transmitted to the driver's seat or the like.

Means and effects for solving the problems

  The problems to be solved by the present invention are as described above. Next, means for solving the problems and the effects thereof will be described.

  According to the viewpoint of this invention, the combine of the following structures is provided. That is, this combine is provided with an airframe, a cutting part, a radiator, a cooling fan, a shroud, and a sound insulation member. The mowing unit is disposed in front of the airframe and harvests the cereal. The radiator cools cooling water of the engine. The cooling fan cools the cooling water in the radiator by cooling air generated by sucking outside air. The shroud is disposed between the radiator and the cooling fan, and has a suction hole through which the cooling air passes, and guides the cooling air. The sound insulating member is attached in the vicinity of the suction hole of the shroud so as to protrude from the engine side surface of the shroud to the engine side, and is disposed behind the fuselage from the center of the suction hole. The

  Thereby, by disposing the sound insulation member in the vicinity of the suction hole of the shroud, it is possible to suppress the suction sound of the cooling air and the operation sound of the cooling fan from being transmitted to the combine driver's seat or the like. In addition, there is a cutting part in front of the aircraft, and the noise generated in this cutting part is very large. Therefore, even if a sound insulation member is arranged in front, the effect of noise reduction cannot be felt so much (the cutting portion side needs to take another sound insulation measure). In this respect, since there are generally few noise sources on the rear side of the airframe, the noise reduction effect can be reliably exhibited by providing a sound insulating member.

  In the above-described combine, it is preferable that the sound insulation member is disposed at a part of the rear of the machine body from the center of the shroud.

  Thereby, since a sound insulation member can be provided only in a required part, the cost of a sound insulation member can be held down.

  In the combine, it is preferable that the sound insulating member is disposed along an outer edge of the suction hole of the shroud.

  Thereby, since the suction sound of the cooling air is mainly transmitted from the suction hole to the inside of the combine, the noise can be efficiently suppressed by arranging the sound insulating member along the suction hole.

  In the above-described combine, it is preferable that the sound insulating member is constituted by a plate-like member having a plane portion parallel to the axis of the suction hole.

  Thereby, since a sound insulation member can be manufactured easily, the cost of a sound insulation member can be held down.

  The above combine is preferably configured as follows. That is, the combine includes a driver seat for an operator to sit on. At least a part of the portion occupied by the driver seat and the portion occupied by the shroud overlap in the longitudinal direction of the aircraft. The sound insulation member is disposed behind the airframe from the driver seat.

  As a result, the driver's seat and the shroud are arranged close to each other, so that noise such as the suction sound of the cooling air is easily transmitted to the operator of the driver's seat. Therefore, the effect of providing the sound insulating member can be more effectively exhibited. Further, when noise such as cooling air suction sound is transmitted from behind the driver's seat, the noise may be transmitted to the vicinity of the operator's head via the back of the driver's seat. In this respect, the influence of the noise transmitted to the operator can be suppressed by arranging the sound insulating member behind the driver seat.

The right view of the combine which concerns on one Embodiment of this invention. The left view of a combine. The top view of a combine. The right view which shows the to-be-cooled object arrange | positioned inside a rotary screen. The rear view which shows a mode that external air is attracted | sucked with a cooling fan. The perspective view which looked at a radiator, a shroud, etc. from the inside of a combine. The left view which looked at a radiator, a shroud, etc. from the inside of a combine.

  Next, embodiments of the present invention will be described with reference to the drawings. 1 to 3 are a right side view, a left side view, and a plan view of the combine 1 according to the present embodiment. In the following description, “left” and “right” mean left and right in the direction in which the combine 1 moves forward.

  The combine 1 of the present embodiment is configured as a so-called cabin-specific self-removing combine. As shown in FIG. 1, in the combine 1 of the present embodiment, a harvesting unit 10 for harvesting a stock of a crop culm such as rice and wheat is disposed in front of the body 2. Further, a crawler portion 12 for running the machine body 2 is provided on each of the left and right sides of the lower part of the machine body 2 of the combine 1.

  On the left side of the harvesting unit 10 and on the left side of the combine 1, a threshing device 13 for threshing the cereals harvested by the harvesting unit 10, and a screen for selecting and extracting the grains threshed by the threshing device 13 A device 14 is provided.

  In the upper right part of the combine 1, a glen tank 15 for storing grains is provided. The grain selected by the sorting device 14 is conveyed to the Glen tank 15 by a conveyor mechanism (not shown) and stored in the Glen tank 15. The combine 1 also includes a discharge auger 16 for discharging the grains in the Glen tank 15 to the outside.

  A cabin 17 in which an operator steers the combine 1 is provided in front of the Glen tank 15. The cabin 17 is provided with a driving operation unit 18 such as a steering handle, a driving seat 19 for an operator to sit on, and the like. The driver seat 19 is disposed on the right side of the center of the combine 1. The operator can give various instructions such as the harvesting operation and traveling of the combine 1 by operating the driving operation unit 18.

  Below the driver seat 19, an engine 80 as a drive source for the combine 1 is provided. A pre-cleaner 81 that preliminarily purifies the air supplied to the engine 80 is installed behind the driver seat 19. The engine 80 is supplied with air sucked from the outside through a precleaner 81.

  A rotary screen 21 is provided on the right side of the combine and on the right side of the engine. Outside air used for cooling the engine 80 and the like is taken in via the rotary screen 21. Since the rotary screen 21 is configured in a mesh shape, dust or soot can be received when taking in outside air. The dust or soot received by the rotary screen 21 is sucked and removed by a suction device 22 disposed in the vicinity of the rotary screen 21.

  The cutting unit 10 includes a plurality of weed boards 11 and a cutting blade (not shown). The harvesting unit 10 included in the combine 1 according to the present embodiment can simultaneously harvest a plurality of cereal grains.

  The plurality of weed boards 11 are provided side by side in the left-right direction of the body 2 at the front lower part of the cutting unit 10. The weed board 11 defines the width to cut the culm by being inserted between the rows of the culm. In addition, the hay bale plate 11 scoops up the fallen corn straw to facilitate the harvesting of the corn straw. In the cutting unit 10, a cutting blade (not shown) is provided behind the weed board 11. The cereal grains inserted between the weed boards 11 are cut and cut near the roots by a cutting blade.

  The cereals harvested by the mowing unit 10 are transported to the threshing device 13 by a transport device (not shown) and threshed. By performing the harvesting operation while running the self-removing combine 1 configured as described above, it is possible to harvest cereals growing in the field, thresh and take out the grains.

  Next, with reference to FIGS. 4 to 7, a configuration for cooling a member disposed inside the rotary screen 21, in particular, cooling water for the engine 80 will be described. FIG. 4 is a right side view showing an object to be cooled arranged inside the rotary screen 21. FIG. 5 is a rear view showing a state in which outside air is sucked by the cooling fan 83.

  As shown in FIGS. 4 and 5, an engine room frame 23 is disposed inside the rotary screen 21. The engine room frame 23 is provided on the right side of the engine 80 and is one of the frames constituting the engine room.

  As shown in FIG. 5, a cooling fan 83 is attached to the output shaft 82 of the engine 80. The cooling fan 83 can suck outside air by rotating using the engine 80 as a drive source. Cooling air generated by the cooling fan 83 sucking outside air flows toward the engine 80 via the rotary screen 21 and the engine room frame 23.

  Here, as shown in FIG. 4, a mission oil cooler 24, a work oil cooler 25, and an intercooler 26 are arranged in a space surrounded by the engine room frame 23.

  The mission oil cooler 24 is connected to the transmission by a pipe (not shown). The mission oil becomes hot when the transmission is driven. The mission oil cooler 24 cools the mission oil by exchanging heat with the cooling air.

  The working oil cooler 25 is disposed on the hydraulic circuit. The working oil cooler 25 is connected to a hydraulic valve, a lifting cylinder of the cutting unit 10, a lifting cylinder of the discharge auger 16, and the like. The working oil (hydraulic oil) becomes high temperature by operating the hydraulic equipment. The work oil cooler 25 cools the work oil (hydraulic oil) by exchanging heat with the cooling air.

  The intercooler 26 is disposed on the intake path of the engine. The intercooler 26 is disposed between the supercharger and the intake manifold. The intake air pressurized by the supercharger becomes high temperature. The intercooler 26 cools the intake air by exchanging heat with the cooling air.

  A radiator 30 is disposed on the inner side (left side) of the combine 1 than the mission oil cooler 24, the work oil cooler 25, and the intercooler 26. The radiator 30 has a circulation path for circulating the cooling water in the water jacket of the engine 80. In the circulation path of the radiator 30, a cooling core, an upper tank, a lower tank, and the like are arranged.

  The cooling core is composed of tubes, fins, and the like, and cools the cooling water by exchanging heat with the cooling air. The cooling core is sandwiched between the upper tank and the lower tank in the vertical direction. As shown in FIG. 5, the upper tank is connected to the engine 80 by an upper hose 31. Further, the lower tank is connected to the engine 80 by a lower hose attached to the lower hose attachment portion 32. With the above configuration, the cooling water sent from the engine 80 side is cooled by passing through this circulation path, and returned to the engine 80 side again.

  Further, a sub tank 34 is connected to the radiator 30 via a sub tank connection hose 33. The sub tank 34 stores cooling water for the overflow of the radiator 30.

  Next, the shroud 40 and the sound insulation member 50 will be described with reference to FIGS. FIG. 6 is a perspective view of the radiator 30 and the shroud 40 as viewed from the inside of the combine 1. FIG. 7 is a left side view of the radiator 30 and the shroud 40 as viewed from the inside of the combine 1.

  A shroud 40 is disposed between the radiator 30 and the cooling fan 83. The shroud 40 is a member for efficiently applying cooling air to the radiator 30. Specifically, as shown in FIG. 6, the shroud 40 is a box-like member having the same size as the radiator 30, and the entire surface of the radiator 30 is open. That is, the shroud 40 is configured to just cover the surface of the radiator 30.

  On the other hand, a suction hole 41 is formed on the inner (left side) surface of the combine 1 of the shroud 40. The suction hole 41 is about the same size as the cooling fan 83 and is arranged so that a part of the cooling fan 83 enters as shown in FIG. With this configuration, almost all of the cooling air generated by the cooling fan 83 passes through the radiator 30, so that the cooling air can be efficiently applied to the radiator 30.

  Further, a connecting member 61 is attached to the front end portion of the radiator 30. The connecting member 61 has a crank-like cross section cut along a horizontal plane. The front end of the suction hole 41 of the shroud 40 is open, and the connecting member 61 covers the open portion. A hose attachment plate 62 is attached to the connecting member 61. The hose attachment plate 62 is a plate-like member that is partially open. A hose (not shown) through which transmission oil flows is attached to the hose attachment plate 62.

  Here, in the vicinity of the suction hole 41, a suction sound of the cooling air and an operation sound of the cooling fan 83 are generated. Furthermore, as shown in FIG. 3, since the driver's seat 19 is disposed substantially above the shroud 40, noise generated in the vicinity of the suction hole 41 may be transmitted to the operator.

  In consideration of the above points, the sound insulation member 50 is provided in the combine 1 of this embodiment. As shown in FIGS. 6 and 7, the sound insulating member 50 is disposed along the outer edge (specifically, the rear side portion) of the suction hole 41 of the shroud 40. The sound insulating member 50 includes a first member 51, a second member 52, and a third member 53 that are integrally formed. The first member 51 to the third member 53 are members having an L-shaped cross section cut along a horizontal plane. One of the L-shaped portions is arranged along the surface of the shroud 40 (the surface on the engine 80 side), and the other of the L-shaped portions is perpendicular to the surface of the shroud 40 and protrudes toward the engine 80 side. (In other words, parallel to the axis of the suction hole 41).

  The sound insulating member 50 is formed by processing a single thin plate material. Specifically, one long and narrow plate material is prepared, and the plate material is bent at a substantially right angle so that a line passing through the center in the width direction (short direction) becomes a crease. Then, the bent plate material is bent at two locations so as to be in a shape along the suction hole 41. At this time, in order to enable folding, a notch is formed in the bent portion. Thus, the sound insulating member 50 including the first member 51, the second member 52, and the third member 53 is formed.

  Further, when viewed in the front-rear direction (FIG. 5), a part of the cooling fan 83 is located inside the shroud 40 and the rest is exposed outside the shroud 40. The sound insulating member 50 covers at least a part of the exposed portion with a portion parallel to the axis of the suction hole 41. The sound insulation member 50 is disposed along the outer edge of the suction hole 41. Thereby, the noise transmitted to the driver's seat 19 can be suppressed by confining the suction sound of the cooling air and the operation sound of the cooling fan 83 inside the shroud 40.

  The sound insulating member 50 is disposed at a part on the rear side of the virtual line L1 indicating the center position of the suction hole 41 when viewed in the axial direction of the suction hole 41 (FIG. 7). This is because noise is easily transmitted to the driver seat 19 because only the 15th position of the Glen tank is disposed on the rear side of the shroud 40.

  On the other hand, since many parts are arranged on the front side of the shroud 40, noise is not easily transmitted to the driver seat 19. Further, the cutting part 10 is present in front of the driver seat 19. Since the noise generated in the cutting unit 10 is considerably larger than the noise generated in the suction hole 41, the influence of the noise generated in the suction hole 41 on the driver seat 19 is relatively small.

  Considering the above, the noise transmitted to the driver's seat 19 can be greatly suppressed by arranging the sound insulating member 50 on the rear side. However, the noise transmitted to the driver's seat 19 is reduced so much even if the sound insulating member 50 is disposed on the front side. It cannot be suppressed. Therefore, by disposing the sound insulation member 50 only on the rear side of the imaginary line L1 among the front side and the rear side of the imaginary line L1 as in the present embodiment, it is transmitted to the driver seat 19 while suppressing the material cost and the assembly cost. Noise can be suppressed.

  Next, the positional relationship between the driver's seat 19 and the shroud 40 and the sound insulation member 50 will be described. As shown in FIGS. 2 and 3, at least a part of the portion occupied by the driver seat 19 in the front-rear direction and the portion occupied by the shroud 40 in the front-rear direction overlap each other. Specifically, the front end of the shroud 40 is located between the front end and the rear end of the driver seat 19. Thus, in this embodiment, the noise source (the shroud 40) and the driver's seat 19 have a close layout. However, in this embodiment, since the sound insulation member 50 is disposed in the shroud 40, the influence of noise can be suppressed.

  Further, as shown in FIG. 3, the sound insulating member 50 is disposed behind the driver seat 19. The driver's seat 19 includes a seat portion and a back portion, and unillustrated plate members are disposed below the seat portion and behind the back portion. Here, when noise is transmitted from the back of the driver's seat 19, the noise is transmitted from the back of the back portion, and therefore the noise is transmitted to the vicinity of the operator's head. In this regard, in the present embodiment, since the sound insulating member 50 is disposed behind the driver seat 19, noise transmitted from the back of the back portion can be suppressed.

  In the present embodiment, the driver seat 19 is disposed in front of the center of the suction hole 41 of the shroud 40, but the center of the suction hole 41 and the driver seat 19 may overlap. In the present embodiment, the driver seat 19 and the shroud 40 do not overlap in plan view (FIG. 3), but they may be arranged so as to overlap.

  As described above, the combine 1 according to the present embodiment includes the airframe 2, the cutting unit 10, the radiator 30, the cooling fan 83, the shroud 40, and the sound insulation member 50. The mowing unit 10 is disposed in front of the machine body 2 and harvests the cereal. The radiator 30 cools the cooling water of the engine 80. The cooling fan 83 cools the cooling water in the radiator 30 with cooling air generated by sucking outside air. The shroud 40 is disposed between the radiator 30 and the cooling fan 83, has a suction hole 41 through which the cooling air passes, and guides the cooling air to the radiator 30. The sound insulation member 50 is attached in the vicinity of the suction hole 41 of the shroud 40 so as to protrude from the surface of the shroud 40 on the engine 80 side to the engine 80 side, and is disposed behind the airframe 2 from the center of the suction hole 41. Is done.

  Thereby, by disposing the sound insulation member 50 between the radiator 30 and the cooling fan 83, it is possible to suppress the suction sound of the cooling air and the operation sound of the cooling fan 83 from being transmitted to the cabin 17. And the sound insulation effect can be reliably exhibited by providing the sound insulation member 50 at least on the opposite side of the cutting part 10.

  Moreover, in the combine 1 of this embodiment, the sound insulation member 50 is arrange | positioned in the back part rather than the center of the shroud 40. FIG.

  Thereby, since the sound insulation member 50 can be provided only in a required part, material cost and assembly cost can be held down.

  Moreover, in the combine 1 of this embodiment, the sound insulation member 50 is disposed along the outer edge of the suction hole 41 of the shroud 40.

  Thereby, since the suction sound of the cooling air is generated from the suction hole 41, the noise can be efficiently suppressed by arranging the sound insulating member 50 along the suction hole 41.

  Moreover, in the combine 1 of this embodiment, the sound insulation member 50 is comprised by the plate-shaped member which has a plane part parallel to the axis line of the suction hole 41. As shown in FIG.

  Thereby, since the sound insulation member 50 can be manufactured easily, the cost of the sound insulation member 50 can be suppressed.

  The preferred embodiment of the present invention has been described above, but the above configuration can be modified as follows, for example.

  The shape and arrangement of the sound insulation member 50 described in the above embodiment are arbitrary and can be changed as appropriate. For example, the sound insulation member 50 may be attached not only behind but behind the virtual line L1. Further, a curved sound insulating member 50 that extends along the edge of the suction hole 41 may be attached to the shroud 40.

  In the above embodiment, the cooling fan 83 is provided directly on the output shaft of the engine 80. However, the cooling fan 83 may be provided at a position away from the engine 80 by appropriately transmitting the driving of the engine 80. it can.

  Although the combine 1 of said embodiment is provided with the cabin 17, this invention is applicable also to the combine 1 of the type which is not provided with the cabin 17 but the driver's seat 19 is exposed.

DESCRIPTION OF SYMBOLS 1 Combine 2 Airframe 10 Cutting part 21 Rotary screen 22 Suction device 30 Radiator 40 Shroud 41 Suction hole 50 Sound insulation member 51 1st member 52 2nd member 53 3rd member

Claims (5)

The aircraft,
A cutting part that is arranged in front of the machine body and reaps the grains;
A radiator for cooling the engine coolant;
A cooling fan that cools cooling water in the radiator by cooling air generated by sucking outside air;
A suction hole that is disposed between the radiator and the cooling fan and through which the cooling air passes, and a shroud that guides the cooling air;
A sound insulation member, which is attached in the vicinity of the suction hole of the shroud so as to protrude from the engine-side surface of the shroud to the engine side, and is disposed behind the fuselage from the center of the suction hole;
The combine characterized by comprising. The combine according to claim 1,
The combiner, wherein the sound insulation member is disposed at a part of the rear of the fuselage with respect to the center of the shroud. The combine according to claim 1 or 2,
The sound insulation member is arranged along the outer edge of the suction hole of the shroud. A combine according to claim 3,
The sound insulation member is composed of a plate-like member having a plane portion parallel to the axis of the suction hole. The combine according to any one of claims 1 to 4,
It has a driver's seat for the operator to sit on,
In the front-rear direction of the fuselage, at least part of the portion occupied by the driver seat and the portion occupied by the shroud overlap,
The combine characterized in that the sound insulation member is arranged behind the fuselage with respect to the driver seat.

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