JP2018099072A - Agricultural work vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently perform such a work as cleaning a condenser while acquiring a support structure of the condenser inexpensively.SOLUTION: A condenser unit 22 is provided with a condenser 24 and a cooling fan 25 for the condenser. The condenser unit 22 is supported to a receiver 23 so as to be rotatable around a normal use posture and a maintenance posture released from the use posture.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a farm vehicle provided with an operation unit, a cabin that covers the operation unit, and an air conditioner that air-conditions the interior of the cabin.

  As the above-described agricultural work vehicle, for example, as disclosed in Patent Document 1, there is a combine provided with a driving unit, a driving cabin as a cabin that covers the driving unit, and an air conditioner that air-conditions the inside of the driving cabin. The air conditioner includes a condenser and a rotating fan as a condenser cooling fan. The capacitor is supported by the engine bonnet and the dust-proof case.

JP 2009-89637 A

  Conventionally, when performing operations such as cleaning the capacitor, it is difficult to reach the surface side of the capacitor, and thus it is necessary to remove the capacitor, which takes time and labor to remove and install the capacitor.

  The present invention provides an agricultural vehicle capable of efficiently performing operations such as cleaning a capacitor while obtaining a support structure at a low cost.

The agricultural work vehicle according to the present invention is:
The driving department,
A cabin covering the operating section;
An air conditioner that air-conditions the interior of the cabin,
The air conditioner includes a condenser unit having a condenser and a cooling fan for the condenser, and a receiver.
The receiver is installed at a position adjacent to the capacitor unit in a cylindrical shape facing up and down the fuselage,
The capacitor unit is supported by the receiver so as to be rotatable over a normal use posture and a maintenance posture released from the use posture.

  According to this configuration, by rotating the condenser unit to the maintenance posture with the receiver as a pivot, the capacitor can be opened from the use posture to the maintenance posture, and the surface side of the capacitor can be easily reached. Further, the capacitor can be returned from the maintenance posture to the use posture by rotating the capacitor unit to the use posture with the receiver as a pivot. When the condenser is put into the maintenance posture or returned to the use posture, the cooling fan also moves together with the condenser, so that there is no need to remove or put back the cooling fan.

Therefore, in order to perform operations such as cleaning the capacitor, the capacitor unit can be easily and quickly moved to a maintenance posture where it is easy to work, or returned to the use posture.
Since the receiver, which is an essential member of the air conditioner, is used as the pivot member, the support structure can be obtained at a low cost.

  In the present invention, there is provided an outside air introduction chamber that has a dust prevention portion and introduces outside air from the outside through the dust prevention portion, and the capacitor unit faces the outside air introduction chamber when in the use posture. It is preferable that the air in the outside air introduction chamber is introduced into the condenser by the rotation of the cooling fan.

  According to this configuration, since the air located in the outside air introduction chamber is supplied as cooling air to the condenser in a state where the dust is removed by the dustproof portion, it is difficult for the dust to adhere to the condenser, and the condenser is efficiently heat-exchanged. The state can be maintained for a long time.

  In the present invention, it is preferable that an engine air cleaner is accommodated in the outside air introduction chamber.

  According to this configuration, since the outside air introduction chamber can be used as the storage space for the air cleaner, it is possible to equip the air cleaner while reducing the size as compared with providing a special storage space.

  In the present invention, a harvesting unit that harvests crops in a field is provided in front of the operation unit, and a grain tank in which harvested kernels are stored is provided at the rear of the operation unit. The tank is provided so as to be rotatable on the laterally outer side of the aircraft body around the vertical axis of the aircraft body located on the rear side of the grain tank, and the outside air introduction chamber is formed at a location behind the driver seat in the driver unit. Preferably, the capacitor unit is located at a rear end portion of the outside air introduction chamber in the use posture, and the receiver is located laterally outside the fuselage with respect to the capacitor unit.

According to this configuration, even if it is configured so that the outside air introduction chamber and the grain tank are close to each other in the front-rear direction, the outside of the outside air introduction chamber is normally rotated by rotating the grain tank laterally outward. A wide working space is provided at the rear, and the capacitor unit can be taken out in this working space. Therefore, it is possible to easily clean the capacitor while shortening the length of the combine.
The condenser unit rotates with the receiver located on the lateral outer side of the fuselage as a rotation fulcrum with respect to the condenser unit, so if the grain tank swinging inside the fuselage comes into contact with the condenser unit in the maintenance posture, the capacitor unit is used. By swinging the grain tank on the posture side, the capacitor unit can be prevented from being damaged.

  In the present invention, it is preferable that the receiver is supported by a cabin frame that supports the cabin.

  According to this configuration, the receiver can be supported with a simple support structure in which the cabin frame is used as a support member of the receiver.

It is a right view which shows the whole combine. It is a top view which shows the whole combine. It is a rear view which shows a capacitor | condenser unit. It is a front view which shows the capacitor | condenser unit of a use attitude | position. It is a top view which shows the capacitor | condenser unit of a use attitude | position. It is a top view which shows the capacitor | condenser unit of a maintenance attitude | position. It is a secondary sectional view which shows the support structure of a receiver. It is a VIII-VIII cross-sectional arrow view of FIG. It is a side view which shows the support structure of a pre air cleaner. FIG. 10 is a sectional view taken along the line XX in FIG. 9.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a right side view showing the entire combine. FIG. 2 is a plan view showing the entire combine. The direction of [F] shown in FIGS. 1 and 2 is the front side of the traveling machine body 1, the direction of [B] is the rear side of the traveling machine body 1, the direction of [L] is the left side of the traveling machine body 1, and the direction of [R]. The direction is defined as the right side of the traveling machine body 1.

  As shown in FIGS. 1 and 2, the combine includes a traveling machine body 1 equipped with a pair of left and right crawler traveling devices 2. A driving unit 3 is formed on the right side of the front portion of the traveling machine body 1. The operation unit 3 is covered with a cabin 4. A driving unit 6 having an engine 5 is formed below the operating unit 3. The cutting part 7 is connected to the front part of the traveling machine body 1 so as to be swingable up and down in a descending working state and an ascending non-working state. The raising / lowering operation of the cutting part 7 is performed by the expansion / contraction operation | movement of a raising / lowering cylinder (not shown). A threshing device 8 and a grain tank 9 are provided at the rear of the traveling machine body 1. The threshing device 8 and the grain tank 9 are arranged in the left-right direction of the traveling machine body 1 in a state where the grain tank 9 is located behind the operation unit 3. The machine body lateral outer side of the grain tank 9 is covered with a cover 10.

In this combine, the harvesting work of crops such as rice and wheat can be performed by running the traveling machine 1 with the cutting unit 7 lowered to the lowered work state.
That is, when the work travel is performed, in the cutting unit 7, the planted stems of the field are introduced into the six raising paths 11 arranged in the horizontal direction of the machine body by the divider 12 and are raised and processed by the raising device 13. The root of the planted cereal to be raised and processed is cut by the clipper type reaping device 14 and reaped. The harvested cereal meal is conveyed toward the rear of the machine body and to the left side of the machine body by the supply and conveyance device 15 and supplied to the front portion of the threshing device 8. In the threshing device 8, the stock side of the harvested cereal rice cake is nipped and conveyed by the threshing feed chain (not shown) toward the rear of the machine body, and the tip side of the harvested cereal rice cake is supplied to the handling chamber (shown) and rotates. (Not shown). After the grain obtained by the handling process is sorted out from dust such as straw scraps, it is carried out from the threshing device 8. The carried grain is supplied to the grain tank 9 by the cerealing device 16 and stored. The grain stored in the grain tank 9 can be taken out from the grain tank 9 by the grain carrying-out device 17 using a screw conveyor.

  As shown in FIGS. 1, 2, and 3, an air conditioner 20 that air-conditions the interior of the cabin 4 is provided across the cabin 4, the rear portion of the driver's seat 3 a in the driving unit 3, and the driving unit 6. The air conditioner 20 includes an indoor unit 21, a compressor (not shown), a capacitor unit 22, and a receiver 23.

  As shown in FIG. 1, the indoor unit 21 is installed on the ceiling 4 a of the cabin 4. The compressor is installed in the engine room 6a (see FIG. 3) of the driving section 6. The compressor is driven by the engine 5.

  As shown in FIGS. 3, 4, and 5, the capacitor unit 22 includes a capacitor 24, a cooling fan 25, a fan shroud 26, and an electric motor 27. The fan shroud 26 is disposed on the back side of the capacitor 24. A mounting portion 26 a provided on the outer periphery of the fan shroud 26 is connected to the frame body 24 a of the capacitor 24, and the fan shroud 26 is supported on the back side of the capacitor 24. The attachment portion 26a and the frame body 24a are connected by a connecting bolt. The electric motor 27 is supported by a plurality of support arms 28. Each support arm 28 extends from the fan shroud 26. The electric motor 27 is supported by the frame body 24 a via the support arm 28 and the fan shroud 26. The cooling fan 25 is supported by an output shaft (not shown) of the electric motor 27 so as not to be relatively rotatable. The cooling fan 25 is supported by the frame body 24 a via the electric motor 27, the support arm 28 and the fan shroud 26.

  As shown in FIGS. 3, 4, and 5, the capacitor unit 22 and the receiver 23 are installed in the outside air introduction chamber 30 </ b> A. As shown in FIGS. 1 and 5, the outside air introduction chamber 30 </ b> A is formed at a front location of the grain tank 9 behind the driver seat 3 a. The outside air introduction chamber 30A includes a rear portion of the top plate portion 32 of the engine bonnet 31 forming the engine room 6a (hereinafter referred to as a top plate rear portion 32a), an upper structure 33, and a dust cover. 34. The upper structure 33 is erected on the upper surface side of the top plate rear portion 32a. The upper structure 33 includes a front wall portion 33a, a rear wall portion 33b, a side wall portion 33c on the inner side of the machine body, and a top plate portion 33d. The dust cover 34 is provided on the outer right side of the upper structure 33. An electrical component storage chamber 30B for storing electrical components such as relays is formed behind the driver seat 3a. The electrical component storage chamber 30B is partitioned from the outside air introduction chamber 30A by the side wall 33c.

  The dust cover 34 is located across the machine body lateral outside of the outside air introduction chamber 30A and the machine body lateral outside of the engine room 6a. As shown in FIGS. 1, 4, and 5, a dustproof portion 34 a for the outside air introduction chamber is formed in a portion of the dustproof cover 34 that faces the machine body laterally outward opening of the outside air introduction chamber 30 </ b> A. The dust-proof part 34a is comprised by the air inlet formed in the dust-proof cover 34, and the dust-proof net provided in this air inlet. The dust-proof portion 34a allows air to be sucked into the inside from the outside of the dust-proof cover 34, and removes dust such as straw scraps that are about to be sucked together with the air by filtering with a dust-proof net. In order to enable the filtration of dust, a metal or resin perforated member having a plurality of ventilation holes can be employed in addition to the use of a dustproof net. A dustproof portion 34b for the engine room is formed at a portion of the dustproof cover 34 that faces the opening of the engine room 6a. The dustproof part 34b for the engine room has the same configuration as the dustproof part 34a for the outside air introduction chamber. The engine room dust-proof portion 34b allows the outside air of the engine bonnet 31 to be sucked into the engine hood as engine cooling air.

  In the capacitor unit 22, the cooling fan 25 is rotationally driven by the electric motor 27 to blow air. By this air blowing action, air outside the outside air introduction chamber 30A is introduced between the shielding plate 35 (see FIG. 5) inside the outside air introduction chamber 30A and the capacitor unit 22 via the dust-proof portion 34a. The introduced air is in a state where dust is removed by the dustproof portion 34a. The introduced air becomes cooling air and passes through the capacitor 24 from the front side to the back side, and the capacitor 24 is cooled by the cooling air.

  As shown in FIGS. 4 and 5, the receiver 23 includes a cylindrical case, and the receiver 23 has a cylindrical shape. As shown in FIGS. 3, 4, and 5, the receiver 23 is provided adjacent to the capacitor unit 22 at a location on the outer right side of the fuselage unit 22. As shown in FIGS. 4, 5, 7, and 8, the upper end side and the lower end side of the receiver 23 are supported by the support frame 39 via the attachment member 40. As shown in FIGS. 7 and 8, the receiver-side portions of the upper and lower mounting members 40 are formed in a ring shape and are externally fitted to the receiver 23. As shown in FIG. 7, a locking pin 41 is attached to the support frame 39. The locking pin 41 and the lower end of the receiver 23 are engaged. The receiver 23 is received by a locking pin 41 so as not to be detached from the mounting member 40. The receiver 23 is prevented from rotating by a locking pin 41 so as not to rotate.

  As shown in FIGS. 1 and 7, the upper end side of the support frame 39 is connected to the upper end side of the cabin frame 42, and the lower end side of the support frame 39 is connected to the lower end side of the cabin frame 42. The support frame 39 is supported by the cabin frame 42. The receiver 23 is supported by the cabin frame 42 via the attachment member 40 and the support frame 39. As shown in FIG. 1, the cabin frame 42 includes a lower portion of a rear lateral wall portion 4 c located on the rear side of the entrance / exit 4 b in the lateral wall portion of the cabin 4 and a rear portion of the lower portion of the entrance / exit 4 b in the lateral wall portion of the cabin 4. And a portion extending along the side. The cabin frame 42 supports a lateral wall portion having the doorway 4 b in the cabin 4.

  As shown in FIGS. 3, 5, and 6, a vertical frame portion adjacent to the receiver 23 in the frame body 24 a of the capacitor 24 is supported by the receiver 23 via an attachment member 43. As shown in FIG. 8, the attachment member 43 and the frame body 24 a are connected via a cushion rubber 44. As shown in FIGS. 5 and 7, the receiver side portion of the attachment member 43 is externally fitted to the receiver 23. The attachment member 43 is received and supported by the lower attachment member 40. The attachment member 43 slides relative to the receiver 23 and the lower attachment member 40 to rotate relative to each other. The capacitor unit 22 is rotatably supported by the receiver 23 via an attachment member 43, and the attachment posture of the capacitor unit 22 can be changed between a use posture and a maintenance posture.

  FIG. 4 is a front view showing the capacitor unit 22 in a use posture. FIG. 5 is a plan view showing the capacitor unit 22 in a use posture. As shown in FIGS. 4 and 5, the condenser unit 22 is rotated to the front side of the machine body with the receiver 23 as a rotation fulcrum, so that the condenser unit 22 is mounted at the rear portion of the outside air introduction chamber 30 </ b> A. Then, the condenser unit 22 assumes a normal use posture such that the condenser 24 faces the outside air introduction chamber 30A and the cooling air is introduced into the outside air introduction chamber 30A to cool the refrigerant. When the capacitor unit 22 is in the normal use posture, the capacitor unit 22 can be fixed in the normal use posture by a lock mechanism (not shown) provided across the frame body 24a and the top plate rear portion 32a.

  FIG. 6 is a plan view showing the capacitor unit 22 in the maintenance posture. As shown in FIG. 6, the capacitor unit 22 is rotated to the rear side of the machine body with the receiver 23 as a rotation fulcrum, so that the capacitor unit 22 is attached to extend backward from the receiver 23. Then, the capacitor unit 22 is opened to the rear from the use posture, and becomes a maintenance posture so as to form a maintenance space on the front surface side of the capacitor 24.

  As shown in FIG. 1, a vertical conveyor portion 17 a of the grain carry-out device 17 is connected to the rear part of the grain tank 9. The vertical conveyor portion 17a is supported by the support portion 1b of the body frame so as to be relatively rotatable. The grain tank 9 is rotatable about the machine body vertical axis X of the vertical conveyor unit 17 a located on the rear side of the grain tank 9. As shown by a two-dot chain line in FIG. 2, by rotating the grain tank 9, the grain tank 9 is attached as a maintenance attitude in which the grain tank 9 protrudes laterally outside the traveling machine body. The posture can be changed to a mounting posture as a normal posture in which the grain tank 9 is positioned on the airframe frame along the longitudinal direction of the airframe.

  In normal times, as shown in FIGS. 3, 4, and 5, the capacitor unit 22 is swung to the front side of the machine body with the receiver 23 as a rotation fulcrum, so that the capacitor unit 22 is mounted in a use posture. Then, the capacitor unit 22 is positioned at the rear part of the outside air introduction chamber 30A, and the front side of the capacitor 24 faces the outside air introduction chamber 30A. Due to the rotation of the cooling fan 25, the air outside the outside air introduction chamber 30A passes through the dust-proof portion 34a and is introduced into the outside air introduction chamber 30A in a state where dust is removed. The introduced air is supplied as cooling air to the capacitor 24, and the capacitor 24 is cooled by the cooling air. As a result, the refrigerant is compressed by the compressor to be in a gas state, and the refrigerant supplied to the condenser 24 via a circulation path (not shown) is cooled in the condenser 24 to be in a liquid state. The refrigerant in a liquid state is supplied to the receiver 23 via the circulation path 36 (see FIG. 4), and is supplied from the receiver 23 to the indoor unit 21 via the circulation path 37 (see FIGS. 9 and 10). In the indoor unit 21, the refrigerant is supplied to an evaporator (not shown), and heat exchange is performed between the refrigerant and the conditioned air to generate conditioned air with a lowered temperature. The conditioned air whose temperature has decreased is supplied to the cabin 4. The refrigerant that has passed through the evaporator is returned to the compressor via the circulation path 38 (see FIGS. 9 and 10).

  When performing operations such as cleaning the capacitor 24, the grain tank 9 is changed from the normal posture to the maintenance posture. As a result, when the rear side of the outside air introduction chamber 30A is opened, the condenser unit 22 is rotated backward from the use posture with the receiver 23 as a rotation fulcrum, and the mounting posture of the capacitor unit 22 is switched to the maintenance posture. Then, the capacitor unit 22 comes out from the outside air introduction chamber 30A, and the front side of the capacitor 24 can be opened behind the outside air introduction chamber 30A.

  As shown in FIGS. 1, 3, and 5, the rear portion of the dustproof cover 34 is pivotally supported by the upper and lower support portions 39 a of the support frame 39. The dust cover 34 can be swingably opened and closed with the pivot axis Y of the support portion 39a facing the body up and down as the swing center. By opening the dust-proof cover 34, the opening of the outside air introduction chamber 30A can be opened, and the liquid amount display portion of the receiver 23 can be viewed from the outside of the airframe through the opening of the outside air introduction chamber 30A.

  As shown in FIGS. 4 and 5, an engine air cleaner 50 is accommodated in the outside air introduction chamber 30A. A pre-air cleaner 52 is connected to an intake port portion of the air cleaner 50 via an intake pipe 51. As shown in FIGS. 1 and 2, the pre-air cleaner 52 is positioned near the rear of the ceiling 4 a of the cabin 4 at the same height as the ceiling 4 a. As shown in FIG. 9, the pre-air cleaner 52 is supported by the support arm 53. The support arm 53 extends rearward from the pillar 54 in the rear wall 4e of the cabin 4.

  As shown in FIGS. 1, 3, 4, and 5, the intake pipe 51 includes an indoor pipe portion 51a that extends from the intake port of the air cleaner 50 to the rear side of the right side end of the outside air introduction chamber 30A on the right side of the fuselage. From the extended end portion of the indoor pipe portion 51a, it passes upward through the tube hole of the top plate portion 33d and exits to the outside air introduction chamber 30A, and this exterior is directed upward to the vicinity of the ceiling portion 4a of the cabin 4 And a longitudinal pipe 51c extending from the extending end of the vertical pipe 51b to the pre-air cleaner 52 in the rearward direction of the machine.

  As shown in FIGS. 3, 4, and 10, in the vertical tube portion 51 b, the upper portion located at a higher level than the lower portion close to the top plate portion 32 is displaced to the inner side of the body relative to the lower portion. ing. When the outside is seen from the cabin through the rounded corner C between the rear wall 4e and the lateral wall of the cabin 4, the upper portion of the vertical pipe portion 51b is set to be a corner portion so as not to become an obstacle. It is separated from the inside of the aircraft against C.

  As shown in FIGS. 3 and 5, the cabin 4 is rotatably supported by the column 55. By rotating the cabin 4 to the lateral outer side of the traveling machine body with the support column 55 as a rotation fulcrum, the engine bonnet 31, the outside air introduction chamber 30A, and the driver seat 3a are also moved, and the engine room 6a can be opened.

[Another embodiment]
(1) In the above-described embodiment, an example in which the outside air introduction chamber 30A is provided has been described. However, the outside air introduction chamber 30A may not be provided.

(2) In the above-described embodiment, the example in which the receiver 23 is provided on the right side of the fuselage with respect to the capacitor unit 22 is shown. However, the receiver 23 is located on the left side of the fuselage with respect to the capacitor unit 22. It may be provided and implemented. Moreover, in the usage posture of the capacitor unit 22, the example in which the capacitor 24 is configured to be in the posture along the lateral direction of the fuselage has been shown. Good.

(3) Although the example which accommodated the air cleaner 50 in the external air introduction chamber 30A was shown in the above-mentioned Example, you may provide the air cleaner 50 in the exterior of the external air introduction chamber 30A.

(4) In the above-described embodiment, an example in which the receiver 23 is supported by the cabin frame 42 has been described. However, the receiver 23 may be supported by a dedicated support member.

  The present invention is not limited to a combine, and can be applied to various farm vehicles such as a harvester, a rice transplanter, and a tractor that harvest various crops such as corn.

DESCRIPTION OF SYMBOLS 3 Driver | operator 3a Driver's seat 4 Cabin 9 Grain tank 20 Air conditioner 22 Condenser unit 23 Receiver 24 Condenser 30A Outside air introduction chamber 34 Dust-proof cover 34a Dust-proof part 50 Air cleaner

Claims (5)

The driving department,
A cabin covering the operating section;
An air conditioner that air-conditions the interior of the cabin,
The air conditioner includes a condenser unit having a condenser and a cooling fan for the condenser, and a receiver.
The receiver is installed at a position adjacent to the capacitor unit in a cylindrical shape facing up and down the fuselage,
The capacitor unit is a farm vehicle supported by the receiver so as to be rotatable over a normal use posture and a maintenance posture released from the use posture. An outside air introduction chamber that has a dustproof portion and introduces outside air from the outside through the dustproof portion, is provided.
2. The condenser unit is configured such that, when in the use posture, the condenser faces the outside air introduction chamber, and the air in the outside air introduction chamber is introduced into the condenser by rotation of the cooling fan. Agricultural work vehicle as described in.   The agricultural work vehicle according to claim 2, wherein an engine air cleaner is accommodated in the outside air introduction chamber. A front part of the operation part is provided with a harvesting part that harvests crops in the field, and a rear part of the operation part is provided with a grain tank in which the harvested grain is stored,
The grain tank is provided so as to be rotatable on the lateral outer side of the machine body around the machine body vertical axis located on the rear side of the grain tank,
The outside air introduction chamber is formed at a location behind the driver seat in the driver,
The capacitor unit is located at the rear end of the outside air introduction chamber when in the use posture,
4. The agricultural work vehicle according to claim 2, wherein the receiver is located on a lateral outer side of the fuselage with respect to the capacitor unit. 5.   The agricultural vehicle according to any one of claims 1 to 4, wherein the receiver is supported by a cabin frame that supports the cabin.

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