CN209990542U - Harvester - Google Patents

Abstract

It is desirable to suppress the rise in the fuel temperature without further complicating the structure. The utility model discloses a harvester has: an engine room (20) that houses an engine (17), a radiator (18), and a cooling fan (19); and a dust-proof box (22) which has a dust-proof part (23) and is arranged outside the machine body relative to the radiator (18) in a state of covering the engine room (20) from the outside of the machine body, wherein the dust-proof part (23) allows air to circulate and prevents dust from passing through, and a cold oil machine (27) for cooling working oil and a fuel cooler (28) for cooling fuel supplied to the engine (17) are arranged in a vertical state on a passing path through which air sucked by the cooling fan (19) through the dust-proof box (22) passes.

Description

Harvester

Technical Field

The utility model relates to a harvester with an engine.

Background

With a conventional harvester, when fuel is supplied to the engine, the fuel stored in the fuel tank is directly supplied to the engine via a fuel supply path. In addition, in some cases, various hydraulic devices are used in a harvester, and a cooling oil machine provided to cool working oil is cooled by cooling air generated in an engine cooling radiator.

However, the temperature of the fuel supplied to the engine sometimes rises for various reasons. For example, when the injection pressure to the engine is increased in order to increase the fuel consumption rate, the fuel temperature may be increased.

According to the above-described conventional structure, even if the temperature of the fuel supplied to the engine rises, the fuel is directly supplied to the engine via the fuel supply path. As described above, when the fuel temperature increases, many air bubbles are contained in the fuel, and the output performance of the engine becomes unstable, which adversely affects the fuel feed pump.

SUMMERY OF THE UTILITY MODEL

(problem to be solved by the utility model)

Here, it is desired to realize a fuel injection device capable of suppressing an increase in fuel temperature without further complicating the fuel injection device.

(means for solving the problems)

The utility model discloses a harvester's characterized in that has: an engine; a radiator for cooling the engine; the cooling fan is arranged at the adjacent position of the inner side of the machine body of the radiator, absorbs external air from the outer side of the machine body to the radiator and provides cooling air for the radiator; an engine room that houses the engine, the radiator, and the cooling fan; and a dust-proof case having a dust-proof portion and provided outside the body with respect to the radiator in a state of covering the engine room from outside the body, the dust-proof portion allowing air to flow therethrough and preventing dust from passing therethrough; a cooling oil machine that cools operating oil and a fuel cooler that cools fuel supplied to the engine are provided in a vertically aligned state on a passage path through which air drawn by the cooling fan through the dust box passes.

According to the utility model discloses, the air that absorbs through radiator with cooling fan is after dust removal through the dust proof box, acts on cold oil machine and fuel cooler respectively. As a result, the fuel supplied to the engine can be cooled while the hydraulic equipment hydraulic oil is cooled.

Therefore, by effectively utilizing the conventional radiator cooling structure, it is possible to suppress an increase in the temperature of the fuel supplied to the engine without further complicating the structure.

In the present invention, preferably, the fuel cooler is located above the oil cooler.

With this configuration, the fuel cooler smaller than the oil cooler can be provided in a small size in the region above the oil cooler.

In the present invention, it is preferable that a first lateral frame extending in the lateral direction be provided at an intermediate position in the up-down direction of the oil cooler and the fuel cooler, and the oil cooler and the fuel cooler be supported by the first lateral frame.

According to this structure, the oil cooler and the fuel cooler can be effectively supported by the first lateral frame.

In the present invention, it is preferable that a longitudinal frame is provided, the longitudinal frame being fixed to a lateral end of the first lateral frame and extending in the up-down direction, and a fuel supply/discharge pipe extending from the fuel cooler is provided along the first lateral frame and the longitudinal frame.

According to this configuration, the first horizontal frame and the vertical frame provided to support the first horizontal frame can be effectively used to stably support the fuel supply and discharge pipe without obstructing the air flow.

Preferably, the oil cooler is an oil cooler for a working equipment for cooling oil for a working equipment as the working oil, and the oil cooler for a transmission for cooling oil for a running transmission is provided in a state below the oil cooler for a working equipment.

According to this configuration, the air taken in by the cooling fan acts not only on the working device oil cooler and the fuel cooler but also on the transmission oil cooler. Since the oil cooler for the working device, the fuel cooler, and the oil cooler for the transmission are provided in a vertically aligned state, the cooling air can be efficiently used.

In the present invention, it is preferable that the oil cooler for working equipment and the oil cooler for transmission are supported by a second horizontal frame extending in the horizontal direction at an intermediate position in the vertical direction between the oil cooler for working equipment and the oil cooler for transmission.

With this configuration, the oil cooler for the working device and the oil cooler for the transmission can be efficiently supported by the second lateral frame.

Drawings

Fig. 1 is an overall side view of a combine harvester.

Fig. 2 is a side view of the power section.

Fig. 3 is a longitudinal sectional front view of the power unit.

Fig. 4 is an exploded perspective view of the dust box.

Fig. 5 is a longitudinal sectional front view of the dust box in an open state.

Fig. 6 is a longitudinal front view of the dust box in maintenance work.

Description of the reference numerals

17: engine

18: heat radiator

19: cooling fan

20: engine room

22: dust-proof box

27: oil cooler for working device

28: fuel cooler

29: oil cooler for speed variator

31: upper side horizontal frame body (first horizontal frame)

33C: rear side longitudinal edge (longitudinal frame)

34: lower side horizontal frame body (second horizontal frame)

40: a fuel supply and exhaust pipe.

Detailed Description

Next, an embodiment of the harvester of the present invention will be described with reference to a general-type combine as an example, with reference to the accompanying drawings. In this embodiment, a direction indicated by a symbol "F" in fig. 1 is a front side of the machine body, a direction indicated by a symbol "B" in fig. 1 is a rear side of the machine body, a direction indicated by a symbol "U" in fig. 1 is an upper side, and a direction indicated by a symbol "D" in fig. 1 is a lower side.

(Integrated Structure of combine harvester)

As shown in fig. 1, the combine harvester has a travel machine body that can travel by a crawler travel device 1. A combine harvester comprises: a harvesting and conveying part 2 for harvesting and conveying the vertical grain stalks backwards; a threshing part 3 for threshing the harvested rice straw; a grain storage unit 4 for storing grains after threshing; a driving unit 6 for an operator to perform driving operations; a power unit 5 located below the driver unit 6; and a grain discharging device 7 for discharging grains; and the like.

The harvesting and conveying part 2 harvests the standing grain stalks and conveys the grain stalks backward. The harvesting and conveying unit 2 can be lifted and lowered as a whole by operation of a hydraulic cylinder not shown.

The driver unit 6 includes a driver seat 14 on which an operator can sit, various kinds of operation members and the like for performing driving operations by the operator.

As shown in fig. 3, the power unit 5 includes an engine room 20 that houses the engine 17, the radiator 18, and the cooling fan 19. The upper side and both front and rear sides of the engine room 20 are covered with an engine cover 21, and the outside of the engine body is covered with a dust box 22 provided outside the engine body with respect to the radiator 18. A dust-proof net 23 as a dust-proof portion is provided on the lateral outer surface of the dust-proof box 22, and the dust-proof net 23 allows air to flow therethrough and prevents dust from passing therethrough.

As shown in fig. 3, the driver seat 14 is supported on an upper portion of the engine hood 21. The engine cover 21 is coupled to the dust box 22. The engine cover 21 and the dust box 22 are integrally supported on the body frame 24 so as to swing around the lower end portion of the dust box 22 toward the axis X in the front-rear direction, which is a horizontal axis.

The dust box 22 can swing between a closed position (see fig. 2 and 3) for covering the outside of the engine room 20 and an open position (see fig. 4 and 5) for opening the outside of the engine room 20 by swinging around the front-rear direction axis X.

The radiator 18 is supported by a radiator frame 25 to a body frame 24. An air guide cover 26 is provided between the radiator 18 and the cooling fan 19, and the air guide cover 26 guides the wind generated by the cooling fan 19 to efficiently pass through the radiator 18. The wind scooper 26 is supported by the radiator frame 25.

(Structure for Cooling working oil)

As shown in fig. 1, 2, and 3, the working device oil cooler 27 as an air-cooled cooling device, the fuel cooler 28 as an air-cooled second cooling device, and the transmission oil cooler 29 as an air-cooled third cooling device are provided in a vertically aligned state in a space in the dust box 22 and in a passage path through which air sucked by the cooling fan 19 through the dust box 22 passes. The working-equipment oil cooler 27 cools working-equipment oil, which is an example of working oil, the fuel cooler 28 cools fuel supplied to the engine 17, and the transmission oil cooler 29 cools transmission oil.

The fuel cooler 28 is located above the working device cold oil engine 27, and the transmission cold oil engine 29 is located below the working device cold oil engine 27. The fuel cooler 28, the working device oil cooler 27, and the transmission oil cooler 29 are not overlapped when viewed from the side, but are disposed in a vertically aligned state.

The working device oil is hydraulic oil for supplying to the plurality of hydraulic cylinders for lifting. The running transmission oil is a working oil supplied to a hydrostatic continuously variable transmission (not shown) capable of continuously varying a running speed.

A rectangular ventilation opening 30 having substantially the same shape as the external shape of the air suction operation portion of the radiator 18 is formed in the side portion of the dust box 22 on the radiator 18 side. When the dust box 22 is in the closed position (the state shown in fig. 2 and 3), the working-equipment oil cooler 27, the fuel cooler 28, and the transmission oil cooler 29 are located at positions corresponding to the ventilation openings 30, respectively. Therefore, the cooling air acts on the working device oil cooler 27, the fuel cooler 28, and the transmission oil cooler 29, respectively, to perform a cooling function.

(supporting structure of oil cooler, etc.)

As shown in fig. 2 and 3, an upper lateral frame body 31 as a first lateral frame extending in the lateral direction toward the front-rear direction of the machine body is provided at an intermediate position in the vertical direction between the working device oil cooler 27 and the fuel cooler 28. The upper portion of the working equipment oil cooler 27 and the lower portion of the fuel cooler 28 are bolted to two locations, one on each side, and are supported by the upper lateral frame body 31.

A coupling member 32 is provided at an intermediate portion in the front-rear direction of the upper portion of the fuel cooler 28. The coupling member 32 is bolted to an upper edge portion 33A of a frame member 33 provided around the ventilation opening 30 of the dust box 22.

The working device oil cooler 27 and the transmission oil cooler 29 each have a lower lateral frame 34 as a second lateral frame extending in the lateral direction toward the front-rear direction of the machine body at an intermediate position in the vertical direction. The lower portion of the working device oil cooler 27 and the upper portion of the transmission oil cooler 29 are bolted to the front and rear two locations, respectively, and are supported by the lower lateral frame 34.

That is, the upper lateral frame 31 and the lower lateral frame 34 constitute a support frame for supporting the working unit oil cooler 27.

The lower portion of the transmission-use oil cooler 29 is supported by the upper portion of the frame member 33 by bolt fastening.

The front end portions of the upper lateral frame body 31 and the lower lateral frame body 34 are supported by the front-side longitudinal edge portion 33B of the frame member 33 by being bolted, and the rear end portions are supported by the rear-side longitudinal edge portion 33C of the frame member 33 by being bolted. Further, by releasing the bolt connection, the connection between the upper lateral frame body 31 and the lower lateral frame body 34 and the frame member 33 can be released. Therefore, both lateral side end portions of the upper lateral frame body 31 and the lower lateral frame body 34 are detachably supported by the front longitudinal edge portion 33B and the rear longitudinal edge portion 33C, which are lateral side portions on both lateral sides of the frame member 33.

The releasing operation of the upper lateral frame 31 and the lower lateral frame 34 can be performed from the outside of the dust box 22 through the ventilation opening 30. Specifically, as shown in fig. 4 and 5, the ventilation opening 30 is opened upward in a state where the dust box 22 is switched to the open position. In this state, the dust box 22 can be attached to and detached from the outside through the ventilation opening 30 from above.

The bolt fastening portion of the rear longitudinal edge portion 33C of the frame member 33 of the dust box 22 projects toward the inner circumferential side of the ventilation opening 30. Therefore, when the bolt connection is released and the rear end portions of the upper lateral frame body 31 and the lower lateral frame body 34 are moved upward or downward, the rear end portions can be removed outward through the ventilation opening 30. Further, the mounting can be performed from the outside.

The working device oil cooler 27, the fuel cooler 28, and the transmission oil cooler 29 each have a hose H having flexibility for supplying and discharging working oil and fuel as a refrigerant. Each hose H passes under the radiator 18 and extends from the internal space of the dust box 22 to the inside of the engine room 20.

The hose H for supplying and discharging the refrigerant to and from the working device oil cooler 27 and the transmission oil cooler 29 can be inserted from below into the lower portion of each of the oil coolers 27 and 29.

As shown in fig. 2, 3 and 4, the dust box 22 has a hose fixing portion 35 at the bottom thereof for holding the hose H. The hose fixing portion 35 is an L-shaped plate when viewed from the front-rear direction, a plurality of insertion holes 36 through which the hose H is inserted are formed in a horizontal surface when the dust box 22 is in the closed posture, and a grommet 37 in a ring shape for protecting the hose H is attached to the insertion holes 36.

The hose fixing portion 35 is attachable to and detachable from the radiator 18 side in the thickness direction (the body left-right direction) of the dust box 22. Specifically, the dust box 22 can be attached and detached from above through the ventilation opening 30 in a state in which it is switched to the closed posture.

As shown in fig. 4, a lower frame member 38 serving also as a lower side edge portion of the frame member 33 is provided at a lower portion of the dust box 22. The lower frame member 38 is formed with a notch 39 into which the hose H can be fitted from the radiator 18 side. The hose fixing portion 35 is placed on the upper side of the lower frame member 38 and fixed by bolt fastening. The gap between the notch 39 and the hose H is closed by fixing the hose by the hose fixing portion 35. The hose fixing portion 35 can be removed by releasing the bolt connection.

As shown in fig. 2, the fuel supply and discharge pipe 40 extending from the fuel cooler 28 is disposed along the upper lateral frame member 31 and the rear longitudinal edge portion 33C of the frame member 33. The fuel supply/discharge pipe 40 passes under the radiator 18, as with the hose H, and extends from the internal space of the dust box 22 to the inside of the engine room 20. Therefore, the rear-side longitudinal edge portion 33C corresponds to a longitudinal frame that supports the fuel supply and discharge pipe 40 in the vertical direction.

The plurality of hoses H can be inserted and removed in the vertical direction while the working device oil cooler 27 and the transmission oil cooler 29 are held in the vertical positions.

Specifically, as shown in fig. 5, the upper lateral frame body 31 and the lower lateral frame body 34 can be detached from above through the ventilation opening 30 in a state where the dust box 22 is switched to the open posture. Further, the bolt connection between the upper portion of the fuel cooler 28 and the lower portion of the transmission-use oil cooler 29 and the frame member 33 can be released.

By releasing the connection with the frame member 33 as described above, the working-equipment oil cooler 27, the fuel cooler 28, and the transmission oil cooler 29 can be removed from the outside integrally with the upper lateral frame 31 and the lower lateral frame 34 through the ventilation opening 30. At this time, the hose fixing portion 35 can also be removed together.

The radiator 18 has a holding portion 41 at an upper central position thereof, and the holding portion 41 is used to hold the working device oil cooler 27, the fuel cooler 28, and the transmission oil cooler 29, which are detached from the dust box 22, in the vertical posture. As shown in fig. 6, the holding portion 41 can be coupled to and support the coupling member 32 provided at the upper portion of the fuel cooler 28 by, for example, bolt coupling.

As shown in fig. 6, the work equipment oil cooler 27, the fuel cooler 28, and the transmission oil cooler 29 can be held in the vertical postures by supporting the coupling member 32 on the holding portion 41. In the state of being held in the vertical posture as described above, the hose H can be inserted and removed in the vertical direction. The hose H can be pulled out for maintenance work. After the completion of the work, the components detached from the dust box 22 as described above can be assembled into the dust box 22 through the ventilation opening 30.

(other embodiments)

Next, other embodiments will be described in order.

(1) The fuel cooler 28 may be located below the working device oil cooler 27.

(2) The working device oil cooler 27 and the fuel cooler 28 may be supported by different frames.

(3) The arrangement position of the fuel supply/discharge pipe 40 may be appropriately changed.

(4) The working-device oil cooler 27 and the transmission oil cooler 29 may be supported by different frames, respectively, and the transmission oil cooler 29 may not be provided.

(5) The working device oil cooler 27 and the fuel cooler 28 may be provided in the engine room 20. Further, according to this structure, the fuel supply/discharge pipe 40 may be supported by a support member provided separately.

(6) The oil cooler of the present invention is not limited to the oil cooler 27 for the working device, and may be a device that uses other types of working oil as an object.

(availability in industry)

The utility model discloses can be applicable to the harvester that ordinary type combine, semi-feeding type combine and corn harvester etc. reaped other kinds of crops.

Claims (6)

1. A harvester is characterized in that a harvester is provided,

comprising: an engine;

a radiator for cooling the engine;

the cooling fan is arranged at the adjacent position of the inner side of the machine body of the radiator, absorbs external air from the outer side of the machine body to the radiator and provides cooling air for the radiator;

an engine room that houses the engine, the radiator, and the cooling fan; and

a dust-proof case having a dust-proof portion, provided outside the body with respect to the radiator in a state of covering the engine room from outside the body, the dust-proof portion allowing air to flow therethrough and preventing dust from passing therethrough;

a cooling oil machine that cools operating oil and a fuel cooler that cools fuel supplied to the engine are provided in a vertically aligned state on a passage path through which air drawn by the cooling fan through the dust box passes.

2. A harvester according to claim 1,

the fuel cooler is positioned above the oil cooler.

3. A harvester according to claim 2,

a first lateral frame extending in a lateral direction is provided at an intermediate position in the up-down direction of the oil cooler and the fuel cooler,

the oil cooler and the fuel cooler are supported on the first transverse frame.

4. A harvester according to claim 3,

having a longitudinal frame fixed to a lateral end of the first lateral frame and extending in an up-down direction,

a fuel supply pipe extending from the fuel cooler is disposed along the first lateral frame and the longitudinal frame.

5. A harvester according to any one of claims 2 to 4,

the oil cooler is a working equipment oil cooler for cooling working equipment oil as the working oil,

the transmission oil cooler is provided below the working device oil cooler to cool the transmission oil.

6. A harvester according to claim 5,

a second transverse frame extending in the transverse direction is provided at an intermediate position in the vertical direction of the working device oil cooler and the transmission oil cooler,

the oil cooler for the working device and the oil cooler for the transmission are supported by the second lateral frame.

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