CN114642119A - Combine harvester - Google Patents

Abstract

The invention provides a combine harvester, which can prevent dust from mixing into engine cooling air through a dustproof shell, and is easy to observe the transverse outer side of the harvester from a driver seat so as to easily operate the harvester. The vehicle seat device is provided with an engine room (41) which is arranged below a seat support table (41d) for supporting an operator's seat (7) and accommodates an engine (9). The engine cooling air duct is provided with a dust-proof housing (53) which is provided on the lateral outer side of the engine body of an engine room (41) in a state of having an inlet (58) for introducing engine cooling air into the engine room (41). The upper end position of the dust-proof housing (53) is configured to be the same height as the upper end position of the seat supporting table (41 d).

Description

Combine harvester

Technical Field

The invention relates to a combine harvester.

Background

A combine harvester is provided with: a seat supporting table for supporting a driver seat; an engine room disposed below the seat support table and accommodating an engine; and a dust-proof case provided on the lateral outer side of the engine body of the engine room in a state of having an inlet for introducing engine cooling air into the engine room. As such a combine harvester, for example, a combine harvester shown in patent document 1 is known. The combine shown in patent document 1 includes an engine hood as a seat support base and a dust cover as a dust-proof housing.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2011-177079

Disclosure of Invention

Problems to be solved by the invention

In the conventional case, even if the lateral outside of the machine body is desired to be observed from the driver's seat, the dust-proof case may become an obstacle and be difficult to observe depending on the region desired to be observed, such as the vicinity of the lateral outside of the machine body, and it may be difficult to manipulate the machine body.

The invention provides a combine harvester, which can prevent dust from mixing into engine cooling air through a dustproof shell and is easy to operate a harvester body.

Means for solving the problems

The combine of the present invention comprises: a seat support base supporting a driver seat; an engine room provided below the seat support base and accommodating an engine; and a dust-proof case provided on the lateral outer side of the engine room with an inlet port for introducing engine cooling air into the engine room, wherein an upper end position of the dust-proof case is configured to be at the same height as an upper end position of the seat support base.

According to this configuration, since the dust-proof housing is less likely to obstruct the lateral outside of the machine body from the driver's seat, dust can be prevented from entering the engine cooling air introduced into the engine room by the dust-proof housing, and the lateral outside of the machine body can be easily viewed from the driver's seat, thereby facilitating the operation of the machine body.

In the present invention, it is preferable that a rotary fan for introducing engine cooling air is provided in the engine room, a switch support stand provided upright on an upper portion of the seat support stand is provided on a lateral outer side of the body of the driver's seat, and a reverse switch for operating the rotary fan to reverse the rotary fan is provided on the switch support stand.

According to this configuration, when the rotary fan rotates in reverse, the wind from the rotary fan blows out from the inside toward the outside onto the dust-proof housing, and dust adhering to the dust-proof housing is removed by the wind from the rotary fan. Since the dust-proof case is less likely to obstruct the operation of the reversing switch from the lateral outside of the body, and since the reversing switch is located at a position higher than the upper portion of the seat support base, the reversing switch can be easily operated from the lateral outside of the body during a work interruption or the like, and the dust of the dust-proof case can be easily removed by the rotating fan.

In the present invention, it is preferable that: a grain box disposed behind the seat support table for storing threshed grains; and a grain discharging device, the grain discharging device with the grain box is connected, follows the grain box discharges threshed grains the switch supporting platform is provided with right the discharging switch that the grain discharging device operates.

According to this configuration, since the dust-proof case is less likely to become an obstacle to the operation of the discharge switch from the lateral outside of the body, and the discharge switch is located at a position higher than the upper portion of the seat support base, when the work of discharging the grains in the grain tank to the loading bed of the transport vehicle located on the lateral side of the body is performed from below the cab, the discharge switch can be easily operated from the lateral outside of the body, and the discharge work can be easily performed.

In the present invention, it is preferable that the reverse switch is provided on a laterally outward facing surface of the body in the outer peripheral surface of the switch support base, and the discharge switch is provided on a frontward facing surface of the body in the outer peripheral surface.

According to this configuration, since the reversing switch is easily operated from the lateral outside of the body, it is convenient to reverse the rotary fan from the lateral outside of the body to remove dust from the dust-proof case when the work is interrupted. Since the discharge switch is easily operated by the driver, the operation of discharging the grains in the grain tank is easily performed by operating the grain discharge device while viewing the grain discharge device from the driver.

In the present invention, it is preferable that a radiator water supply port is provided at a position laterally inward of the machine body with respect to an upper portion of the dust-proof case.

According to this configuration, since the dust-proof case is less likely to obstruct water supply from the lateral outside of the body to the water supply port of the radiator, the water supply operation to the radiator is facilitated.

In the present invention, it is preferable that the dust-proof case includes a grain box provided behind the engine room and storing threshed grains, and a cover portion provided at a rear portion of the dust-proof case and covering a gap between the grain box and the engine room from a lateral outside of the case.

According to this configuration, the gap between the grain tank and the engine room can be covered by the cover structure having a simple structure in which the cover portion is provided only at the rear portion of the dust-proof housing.

Drawings

Fig. 1 is a right side view showing the whole of the combine harvester.

Fig. 2 is a plan view showing the whole of the combine harvester.

Fig. 3 is a perspective view showing the driver unit and the power unit.

Fig. 4 is a right side view showing the driver unit and the power unit.

Fig. 5 is a left side view showing the driver section and the power section.

Fig. 6 is a plan view showing the driver unit and the power unit.

Fig. 7 is a view of section VII-VII of fig. 6.

Fig. 8 is a rear view showing the power unit.

Description of the reference numerals

7 driver's seat

9 engines

16 grain box

19 grain discharging device

41 Engine room

41d seat supporting table

42 switch supporting table

42a transverse outward body surface

42c body toward front

44 discharge switch

51 rotating fan

53 dustproof shell

53K cover part

56 radiator water supply mouth

58 introduction port

61 reverse switch

S gap

Detailed Description

Hereinafter, embodiments as examples of the present invention will be described with reference to the drawings.

In the following description, regarding the traveling machine body of the combine harvester, the direction of arrow F shown in fig. 1 and 2 is referred to as "machine body front", the direction of arrow B is referred to as "machine body rear", the direction of arrow U shown in fig. 1 is referred to as "machine body upper", the direction of arrow D is referred to as "machine body lower", the direction of arrow L shown in fig. 2 is referred to as "machine body left", and the direction of arrow R is referred to as "machine body right".

[ integral structure of combine harvester ]

As shown in fig. 1 and 2, the combine harvester includes a traveling machine body 2 supported by a pair of right and left crawler traveling devices 1. The traveling machine body 2 includes a machine body frame 3 formed by connecting a plurality of steel materials such as square pipes. The crawler travel device 1 is provided at a lower portion of the body frame 3. A steering unit 4, a power unit 5, and a harvesting conveyor 6 are provided in the front of the travel machine body 2. The cab 4 and the power unit 5 are provided at one end side in the lateral direction of the front portion of the traveling machine body 2, and the reaping conveyor 6 is provided at the opposite side of the cab side in the front portion of the traveling machine body 2. The cab 4 includes a cab seat 7 and a sunshade 8 covering the upper part of the boarding space. The power unit 5 includes an engine 9. The harvest transport portion 6 includes: a harvesting part 6A arranged in front of the harvesting conveying part 6; and a feeding device 10 extending rearward from the rear of the harvesting portion 6A. In the harvesting section 6A, the tip end side of the crop such as rice or wheat in the field is raked rearward by the rotary reel 11, the root of the raked crop is cut by the push-shear type harvesting device 12 to harvest the crop, and the harvested crop is conveyed laterally to the supply position with respect to the feeder 10 by the lateral conveyance auger 13. The feeding device 10 receives crops from the transverse conveying auger 13 and conveys the received crops to the back upper part. The feeding device 10 is provided with a dust exhaust device 10A for sucking and discharging dust such as straw chips mixed in the transported crops by the air blowing action of the rotating fan. The harvesting conveyor 6 is configured to swing between a lowered working state and a raised non-working state by a telescopic operation of a lift cylinder (not shown) connected to a lower portion of the feeder 10. A threshing device 15 and a grain tank 16 are supported in a transversely aligned state at the rear of the body frame 3. The threshing device 15 is disposed behind the feeding device 10. The grain tank 16 is disposed behind the cab 4. A threshing cover 17 is provided on the lateral outer side of the threshing device 15. The threshing cover 17 is configured to be dividable into a plurality of divided covers. A box cover 18 is provided laterally outward of the lower portion of the grain box 16. The threshing device 15 receives the crop from the feeder 10, performs threshing processing, and performs sorting processing for sorting the grain obtained by the threshing processing and dust such as straw chips. The threshing device 15 is configured as a whole straw throw-in type in which the whole from the root of the harvested grain straw to the tip of the ear is thrown into the threshing chamber. The grain tank 16 recovers and stores the grains subjected to the sorting process by the threshing device 15. A grain discharging device 19 for discharging grains stored in the grain tank 16 is connected to the rear of the grain tank 16. The grain tank 16 is supported so as to be capable of changing its posture between an open posture for maintenance that projects outward in the lateral direction of the travel machine body 2 and a closed posture for work that is located rearward of the cab 4 in the front-rear direction with the axial center of the vertical transport portion 19A of the grain discharge device 19 as a swing fulcrum.

[ Structure of grain discharging device ]

As shown in fig. 1 and 2, the grain discharging device 19 includes: a longitudinal conveying part 19A which is arranged at the rear part of the grain box 16 in a state of extending along the vertical direction of the machine body; and a lateral conveying section 19B extending from an upper end of the longitudinal conveying section 19A so as to be swingable up and down. The lower part of the longitudinal conveying portion 19A and the rear lower part of the grain tank 16 are connected via a connecting tank 20. The longitudinal conveying portion 19A receives grains discharged from the grain tank 16 to the connecting tank 20, and delivers the received grains. The discharge of the grain from the grain bin 16 is performed by a bottom screw (not shown) arranged in the bottom of the grain bin 16. The horizontal conveying section 19B receives grains that are raised by the vertical conveying section 19A, conveys the received grains horizontally, and discharges the grains from the discharge tube 22 provided at the extending end of the horizontal conveying section 19B.

As shown in fig. 1, a rotation drive mechanism 23 is connected to a middle portion of the vertical conveying section 19A. The rotation drive mechanism 23 is covered with a cover 24. The lateral conveying unit 19B rotates the vertical conveying unit 19A with respect to the junction box 20 by the rotation driving mechanism 23, thereby rotating the vertical conveying unit 19A around the axis of the vertical conveying unit 19A. As shown in fig. 1 and 2, a raising and lowering cylinder 25 is connected to the base of the lateral conveying portion 19B. The traverse transport unit 19B is operated to swing up and down with respect to the vertical transport unit 19A by the telescopic operation of the raising and lowering cylinder 25.

[ Structure of steering section ]

As shown in fig. 3, 4, 5, and 6, the driver unit 4 includes: a driver seat 7 provided at the rear of the driver section 4; a cab floor 30 provided in front of and below the cab 7; a steering tower 31 vertically disposed in front of the driver seat 7; and a side console box 32 provided upright on a side portion of the cab 4 opposite to the entrance side.

As shown in fig. 4 and 6, the steering tower 31 is provided with an operation lever 29 for performing a steering operation of the travel machine body 2 and a lifting operation of the harvesting conveyor 6. As shown in fig. 6 and 7, the side console box 32 includes a side panel 32a provided at an upper portion of the side console box 32. As shown in fig. 6, a threshing clutch lever 33, a harvesting clutch lever 34, and an accelerator lever 35 are provided at the rear of the side panel 32 a. A rotation mode lever 37 for switching the rotation mode of the travel shift lever 36 and the travel machine body 2 between the rapid rotation mode and the slow rotation mode is provided in a front portion of the side plate 32 a. As shown in fig. 5, a vent 38 that allows ventilation between the inside and the outside of the side console box 32 is formed in the side plate portion of the side console box 32. As shown in fig. 3, 5, and 7, a heat insulating member 40 for preventing heat radiation of the exhaust muffler 39 from being transmitted to the driver's seat side is provided at the rear portion of the side console box 32.

As shown in fig. 3 and 7, the driver's seat 7 is supported by a seat support base 41 d. The seat support table 41d is provided above the engine room 41. The support of the driver's seat 7 to the seat support base 41d is performed by connecting a support shaft 7a provided in the lower portion of the driver's seat 7 to a support portion 41e provided in the seat support base 41 d. The seat support base 41d is supported by the body frame 3 via a structure described later that forms the engine room 41. As shown in fig. 8, the rear part of the seat support base 41d is supported by support columns 41c provided upright at two left and right positions of the body frame 3.

As shown in fig. 3, 4, 6, and 7, a switch support base 42 stands on the upper portion of the seat support base 41d at a position laterally outward of the operator's seat 7. As shown in fig. 3, 6 and 7, a cup holder 43 and a discharge switch 44 for operating the grain discharge device 19 are provided on the switch support base 42. In the present embodiment, as shown in fig. 3, 4, 6, and 7, the switch support base 42 includes a body-side outward surface portion 42a, an upward surface portion 42b, and a body-front surface portion 42c on the outer peripheral surface thereof. The body is inclined forward low and backward high toward the front face portion 42 c. The cup holder 43 is provided on the upward surface 42b, and the discharge switch 44 is provided on the forward surface 42c of the body. The discharge switch 44 is easy to operate when the operator operates the grain discharging device 19 while viewing it from the operator 4. The discharge switch 44 includes: a rotary switch 44a for rotationally operating the lateral conveying unit 19B by operating the rotary drive mechanism 23; and an elevation switch 44B for elevating and lowering the lateral transfer unit 19B by operating the raising and lowering cylinder 25.

[ Structure of Power section ]

As shown in fig. 5, 7, and 8, the power unit 5 includes an engine room 41 provided below the seat support base 41 d. As shown in fig. 5, 7, and 8, the engine room 41 is formed by a lateral vertical wall portion 41a and a front vertical wall portion 41b formed by a radiator support frame, a seat support base 41d connected to upper portions of the lateral vertical wall portion 41a and the front vertical wall portion 41b, a rear portion of the side panel 32a, and the like. The engine room 41 is open toward the body lateral outside and the body lateral inside. The engine compartment 41 houses the engine 9, a radiator 50 for cooling the engine, and an exhaust muffler 39. The exhaust muffler 39 is located below the rear portion of the side panel 32 a. As shown in fig. 5, exhaust muffler 39 is supported by engine 9 via stay 49. An air cleaner 47 for the engine is provided outside the rear portion of the engine room 41. As shown in fig. 4 and 6, the air cleaner 47 is provided above the seat support base 41d at a position rearward of the operator's seat 7. As shown in fig. 4 and 8, the air cleaner 47 is supported on the upper portion of the seat support base 41d via a support base 48.

As shown in fig. 7 and 8, the radiator 50 is disposed on the outer side in the lateral direction of the engine body than the engine 9. A rotary fan 51 and a fan cover 52 are provided between the radiator 50 and the engine 9. A dust-proof case 53 is provided on the lateral outer side of the engine room 41 to cool the engine 9.

That is, as shown in fig. 8, a water supply port member 55 is connected to the radiator 50 via a connection pipe 54, and a radiator water supply port 56 is formed through the water supply port member 55. As shown in fig. 4, 6, and 8, the radiator water supply port 56 is provided at a position laterally inward of the machine body with respect to the upper portion of the dust-proof housing 53. As shown in fig. 3 and 4, a hinge member 63 is coupled to the front portion of the dust case 53 and the lateral vertical wall portion 41a, and the dust case 53 is supported so as to be capable of being opened and closed by swinging with a hinge shaft core in the body vertical direction of the hinge member 63 as a swing fulcrum. Even in a state where the dust case 53 is closed, water can be easily supplied to the radiator water supply port 56 from above the dust case 53.

As shown in fig. 7 and 8, the radiator 50 and the rotary fan 51 are disposed on the engine side with respect to the dust-proof case 53. The rotary fan 51 is coupled to the output shaft 9a of the engine 9 via a belt 57.

As shown in fig. 3, 4, 7, and 8, the dust-proof housing 53 includes a vertical wall portion 53A and a peripheral wall portion 53B extending from a peripheral edge portion of the vertical wall portion 53A toward the engine compartment side. The peripheral wall 53B is provided over the entire periphery of the longitudinal wall 53A. The vertical wall portion 53A is provided with an inlet 58 into which engine cooling air can be introduced. As shown in fig. 3, 4, and 7, the introduction port 58 is provided at two positions above and below the vertical wall portion 53A. The upper and lower inlet ports 58 are provided with dust-proof members 59, and the dust-proof members 59 have a plurality of air holes that allow passage of engine cooling air and prevent passage of dust such as straw chips. Dust such as straw chips is removed from the engine cooling air introduced into the radiator 50 by the dust-proof member 59 in the dust-proof housing 53.

The rotary fan 51 is driven by the engine 9, and engine cooling air is introduced from the outside of the power unit 5 into the engine room 41 through the inlet 58 of the dust-proof case 53 by the blowing action of the rotary fan 51. When the engine cooling air passes through the inlet 58, dust such as straw chips is removed by the dust-proof member 59. The introduced engine cooling air is supplied to the radiator 50, and the engine cooling water located in the radiator 50 is cooled by the engine cooling air, whereby the engine 9 is cooled by the cooled engine cooling water.

The rotary fan 51 is configured to be driven by switching between normal rotation for introducing engine cooling air into the radiator 50 and reverse rotation for blowing air into the dust case 53. As shown in fig. 3, 4, and 7, the switch support base 42 is provided with a normal rotation switch 60 that is operated to drive the rotary fan 51 in a normal rotation, and a reverse rotation switch 61 that is operated to drive the rotary fan 51 in a reverse rotation. In the present embodiment, the forward rotation switch 60 and the reverse rotation switch 61 are provided on the body-side outward surface portion 42a of the outer peripheral surface of the switch support base 42.

Specifically, a forward-rotation drive belt 57 for transmitting the power of the output shaft 9a of the engine 9 to the rotary fan 51 to drive the rotary fan 51 in the forward rotation, and a reverse-rotation drive belt 62 for converting the power of the forward-rotation drive belt 57 into reverse-rotation power and transmitting the reverse-rotation power to the rotary fan 51 to drive the rotary fan 51 in the reverse rotation are coupled to the rotary fan 51. A forward/reverse rotation switching mechanism (not shown) for selectively operating the transmission belt 57 and the transmission belt 62 in a transmission state is connected to the forward rotation driving transmission belt 57 and the reverse rotation driving transmission belt 62. The forward/reverse switching mechanism is operated by an electric actuator (not shown), and a fan control mechanism (not shown) is connected to the electric actuator. The fan control mechanism is configured to control the electric actuator so as to periodically drive the rotary fan 51 in reverse rotation while the threshing device 15 is being driven. When the thresher 15 is driven, the rotating fan 51 is automatically and periodically driven in reverse to supply reverse air of the rotating fan 51 toward the dust-proof housing 53 while the thresher 15 is driven, and dust adhering to the inlet 58 is removed by the reverse air. In the present embodiment, the reverse rotation driving of the rotary fan 51 is performed at a frequency of once every 3 minutes.

The forward rotation switch 60 and the reverse rotation switch 61 are connected to the fan control mechanism. The fan control mechanism is configured to control the electric actuator so as to drive the rotary fan 51 in the forward direction even when the threshing device 15 is stopped when the forward rotation switch 60 is operated, and to control the electric actuator so as to drive the rotary fan 51 in the reverse direction even when the threshing device 15 is stopped when the reverse rotation switch 61 is operated.

When the thresher 15 is stopped, such as when the operation is interrupted, the rotating fan 51 is driven in the normal direction by operating the normal rotation switch 60 to supply the engine cooling air to the radiator 50, and the rotating fan 51 is driven in the reverse direction by operating the reverse rotation switch 61 to supply the reverse rotation air generated by the rotating fan 51 to the dust-proof housing 53, whereby the dust-proof housing 53 is cleaned by the reverse rotation air to remove the dust such as straw chips adhering to the inlet 58.

As shown in fig. 4, 7, and 8, the dust-proof housing 53 is configured such that the position of the upper end 53t of the dust-proof housing 53 is the same as the position of the upper end 41t of the seat support base 41 d. When the forward switch 60, the reverse switch 61, and the discharge switch 44 are operated from the outside in the lateral direction of the body when the outside in the lateral direction of the body is viewed from the driver seat 7, the dust-proof housing 53 is less likely to become an obstacle. The case where the position of the upper end 53t of the dust-proof case 53 is made the same as the position of the upper end 41t of the seat support 41d includes: the upper end 53t of the dust-proof housing 53 is positioned slightly lower or higher than the upper end 41t of the seat support base 41d, that is, the upper end 53t of the dust-proof housing 53 is positioned substantially at the same position as the upper end 41t of the seat support base 41 d.

As shown in fig. 4, the front wall 16F of the grain box 16 is configured such that the lower portion 16d is located behind the upper portion 16u, and a gap S is provided between the lower portion 16d of the grain box 16 and the engine room 41. As shown in fig. 4, a cover portion 53K that covers a front portion of the gap S from the lateral outside is provided at a rear portion of the dust-proof case 53. A cover portion 18K that covers a rear portion of the gap S from the lateral outside is provided at a front portion of the box cover 18.

As shown in fig. 3 and 4, the dust-proof case 53 is supported so as to be capable of swinging open and close with a hinge shaft core in the body vertical direction of a hinge member 63 coupled to the front portion of the dust-proof case 53 as a swing fulcrum. As shown in fig. 6 and 8, a lock mechanism 64 for fixing the dust-proof case 53 in a closed position is provided in a portion of the dust-proof case 53 on the inner side of the cover 53K. As shown in fig. 3 and 4, an opening 65 for engaging and disengaging the lock mechanism 64 is formed in the cover portion 53K of the dust-proof housing 53.

[ other embodiments ]

(1) In the above embodiment, the example in which the reverse rotation switch 61, the normal rotation switch 60, and the discharge switch 44 are provided is shown, but the reverse rotation switch 61, the normal rotation switch 60, and the discharge switch 44 may not be provided.

(2) In the above embodiment, the example in which the cover 53K is provided in the dust-proof case 53 is shown, but the cover 53K may not be provided.

Industrial applicability

The present invention is applicable to a combine harvester including a seat support base, an engine room provided below the seat support base and accommodating an engine, and a dust-proof case provided on a lateral outer side of a machine body of the engine room.

Claims (6)

1. A combine harvester, wherein the combine harvester is provided with:

a seat support base supporting a driver seat;

an engine room provided below the seat support base and accommodating an engine; and

a dust-proof case provided on an outer side of the engine room in a lateral direction of the engine room in a state where the dust-proof case has an inlet port for introducing engine cooling air into the engine room,

the upper end position of the dust-proof housing is configured to be at the same height as the upper end position of the seat support base.

2. A combine harvester according to claim 1,

a rotary fan for introducing engine cooling air is provided in the engine room,

a switch support stand provided upright on an upper portion of the seat support stand on a lateral outer side of the body of the driver's seat,

the switch support base is provided with a reverse switch for operating the rotary fan to reverse the rotary fan.

3. A combine harvester according to claim 2,

the combine harvester is provided with:

the grain box is arranged behind the seat supporting platform and is used for storing threshed grains; and

a grain discharging device connected with the grain tank for discharging threshed grains from the grain tank,

the switch supporting table is provided with a discharge switch for operating the grain discharge device.

4. A combine harvester according to claim 3,

the reverse switch is arranged on the transverse outward surface of the body in the peripheral surface of the switch supporting table,

the discharge switch is disposed in the outer circumferential surface toward the front surface portion of the body.

5. A combine harvester according to any one of claims 1 to 4,

a radiator water supply port is provided at a position located on the inner side in the lateral direction of the machine body with respect to the upper portion of the dust-proof case.

6. A combine harvester according to any one of claims 1 to 5,

the combine harvester is provided with a grain box which is arranged at the rear part of the engine room and stores threshed grains,

the rear part of the dust-proof housing is provided with a cover part which covers a gap between the grain tank and the engine room from the lateral outside of the body.

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