JP2019201627A - Working machine - Google Patents

Abstract

To provide a working machine that allows passage of air to a housing chamber and can appropriately regenerate a dustproof filter for filtering dust contained in the air.SOLUTION: A working machine comprises: a housing chamber C provided below an operation part; a partition wall 31 partitioning the housing chamber C into a first space C1 in which an engine 3a is housed, and a second space C2; a dustproof filter 80 covering the housing chamber C from the lateral outside of a machine body, and allowing passage of air; a radiator 36 for the engine 3a provided between the engine 3a and the dustproof filter 80 in the first space C1; and a first air blower 37 provided between the engine 3a and the radiator 36 in the first space C1, and capable of blowing air toward the radiator 36. A communication port 30 allowing communication between the first space C1 and the second space C2 is provided in a portion on the lateral outside of the machine body in the partition wall 31.SELECTED DRAWING: Figure 18

Description

  The present invention covers an operating part, a storage room provided below the operating part, a partition wall that partitions the storage room into a first space and a second space in which the engine is stored, and the storage room from the lateral side of the fuselage. A dust-proof filter that allows air flow, a radiator for the engine provided between the engine and the dust-proof filter in the first space, and a radiator provided between the engine and the radiator in the first space. The working machine provided with the 1st air blower which can ventilate toward.

  Work machines such as harvesters, paddy field machines, and tractors are exposed to dust such as sawdust, rice husk, and earth and sand during their work. Is adopted. Patent Document 1 discloses an engine of a fuselage, a prime mover in which the engine is housed in an engine bonnet (an example of a first space), a radiator of an engine provided on the outer side of the fuselage with respect to the engine, and cooling air for the engine in the radiator. A cooling fan that ventilates, an air cleaner case (an example of the second space) that is housed in the upper surface of the engine bonnet, and a condenser that constitutes the air conditioner. And a harvesting machine (an example of a working machine) provided with a dustproof cover. The dust-proof cover of this working machine includes a dust-removing air intake portion formed by attaching a net-like dust-removing material (an example of a dust-proof filter). The air cleaner case houses a condenser fan that blows cooling air to the condenser. The dust cover covers the engine cooling air sucked into the engine bonnet and the condenser cooling air sucked by the condenser fan into the air cleaner case, so that the dust removing material in the dust removal air intake section acts on the dust from the engine cooling air and the condenser cooling air. Are removed by filtration.

Japanese Patent Application Laid-Open No. 2015-19596

  In the working machine described in Patent Document 1, the dust filter may be clogged with dust such as sawdust. When the dustproof filter is clogged, for example, the ventilation direction of the cooling fan may be reversed to remove the clogging of the dustproof filter (hereinafter referred to as regeneration). In this case, in the dust filter, only the portion through which the air sucked into the first space of the storage chamber flows is regenerated, and the portion through which the air sucked into the second space of the storage chamber flows cannot be properly regenerated. There was a case. Therefore, it is desired to provide a working machine that can appropriately regenerate the dust filter.

  The present invention has been made in view of such a situation, and an object of the present invention is to permit the flow of air into the storage chamber and to properly regenerate the dustproof filter that filters the dust contained in the air. Is to provide a machine.

  In order to achieve the above-described object, the working machine according to the present invention includes a driving unit, a storage chamber provided below the driving unit, the storage chamber, a first space in which an engine is stored, and a second chamber. A partition wall that divides into a space, a dustproof filter that covers the housing chamber from the lateral outer side of the airframe and allows air flow, and the engine provided between the engine and the dustproof filter in the first space. A first air blower that is provided between the engine and the radiator in the first space and is capable of blowing air toward the radiator. A communication port is provided to communicate the first space with the second space.

  According to the above configuration, the air sucked into the first space and the second space of the storage chamber is filtered by the dustproof filter. Therefore, the first space is kept clean, and the radiator and the like in the first space are not contaminated with dust. Like the first space, the second space is kept clean.

  According to the said structure, a part of air which the 1st air blower sent toward the dustproof filter is sent to a dustproof filter directly from 1st space, and passes a dustproof filter toward the exterior from 1st space. As a result, a filter portion (hereinafter, sometimes referred to as a first dustproof filter portion) through which air sucked into the first space flows is regenerated in the dustproof filter.

  According to the above configuration, another part of the air blown toward the dustproof filter by the first blower passes through the communication port of the partition wall and flows into the second space from the first space. The air that has flowed into the second space passes through the dustproof filter from the second space toward the outside. As a result, a filter portion (hereinafter, sometimes referred to as a second dustproof filter portion) through which air sucked into the second space flows is regenerated.

  Therefore, according to the above configuration, it is possible to appropriately regenerate a dustproof filter that allows air to flow into the storage chamber and filters dust contained in the air. That is, any clogging of the first dustproof filter portion and the second dustproof filter portion can be removed as necessary. Thereby, the dustproof filter exhibits stable filtration performance and ventilation performance. In addition, the second space can be stably kept clean together with the first space, and a heat exchanger (for example, a condenser of an air conditioner in the cab of the aircraft) can be provided in the second space. It becomes possible.

  A further characteristic configuration of the work machine according to the present invention is that the partition wall has an internal filter that allows air to flow, and the internal filter is configured to be detachable from the communication port. .

  According to the above configuration, the air is filtered by the internal filter when the air flows from one of the first space or the second space to the other space. Thereby, even if one of the first space or the second space is contaminated with dust, the other space is kept clean. For example, even when the first blower blows toward the dustproof filter in a state where the first space is contaminated with dust, air flowing into the second space from the first space is filtered by the internal filter. The space can be kept clean. Moreover, according to the said structure, when clogged, an internal filter can also be reproduced | regenerated by removing and cleaning.

  A further characteristic configuration of the working machine according to the present invention includes, in the second space, a heat exchanger different from the radiator, and a second blower for the heat exchanger, wherein the second blower is In this configuration, the outside air sucked through the dust filter is blown toward the heat exchanger.

  According to the above configuration, since the second space is kept clean, a heat exchanger different from the radiator can be used without being contaminated with dust. Moreover, in this use, the clean air filtered with the dustproof filter can be ventilated to the heat exchanger with the second blower.

  According to a further characteristic configuration of the working machine according to the present invention, the first blower includes a first operation mode in which outside air is sucked through the dustproof filter and a second operation mode in which air is blown toward the dustproof filter. The second blower is configured to be able to change modes, and is configured to stop operation when the first blower is in the second operation mode.

  According to the said structure, when the 2nd air blower is operate | moving in a 1st operation mode, external air is attracted | sucked via a 2nd dustproof filter part by a 2nd air blower. Even when the second blower is stopped in the first operation mode, the outside air is sucked through the second dustproof filter portion by the suction of the first blower through the communication port. Therefore, in the first operation mode, the clogging of the first dust filter and the second dust filter proceeds.

  On the other hand, in the second operation mode, since the second blower is stopped and the first blower is blowing air toward the dust filter, a part of the air blown by the first blower toward the dust filter is The first dust-proof filter portion passes from the first space to the outside, and the other part passes through the communication port and passes through the second dust-proof filter portion from the second space toward the outside. Thereby, in the second operation mode, the first dust filter and the second dust filter are regenerated. That is, even when a second blower that sucks outside air through a dustproof filter is provided in the second space, if the first operation mode and the second operation mode are alternately switched at a predetermined timing, the second The dust filter can be regenerated reliably.

  According to a further feature of the working machine according to the present invention, the air in the first space is allowed to flow into the second space through the communication port, and the air in the second space is A check mechanism is provided to prevent the air from flowing into the first space through the communication port.

  According to the above configuration, the non-return mechanism allows the air in the first space to flow into the second space through the connection port, so that the air blown by the first blower toward the first dustproof filter portion A part of will flow into the second space through the connection port. And the air which flowed into the 2nd space from the 1st space passes through the 2nd dustproof filter part from the 2nd space, and flows out outside, The 2nd dustproof filter part can be regenerated. In addition, the check mechanism prevents the air in the second space from flowing into the first space through the connection port, so that the air that has flowed into the second space from the outside through the second dust-proof filter portion. (Outside air) does not flow into the first space through the connection port. Thereby, outside air can be reliably supplied to the second space.

  It is possible to provide a working machine capable of appropriately regenerating a dustproof filter that allows air to flow into the storage chamber and filters dust contained in the air.

It is a right view which shows the whole combine. It is a top view which shows the whole combine. It is sectional drawing of the top view which shows the structure of a cabin, etc. It is sectional drawing of right view which shows a cabin, the structure of a storage chamber, etc. It is sectional drawing of the back view which shows the structure of a cabin, a storage chamber, etc. It is a perspective view explaining the structure of a footrest. It is a perspective view which shows the structure of a maintenance port, a cover, etc. It is sectional drawing of the top view which shows a maintenance port, the structure of a cover, etc. It is sectional drawing which shows the structure around the corner | angular part of an engine bonnet. It is sectional drawing of the top view which shows the structure of a boarding door, a hinge, and a door seal. It is a perspective view which shows structures, such as a hinge, a stopper, and a frame. It is sectional drawing of the top view which shows the structure of a boarding door, a hinge, and a door seal. It is explanatory drawing about positioning of a hinge and a boarding door. It is a left view which shows the structure etc. of side glass. It is sectional drawing of the top view which shows the structure etc. of side glass. It is sectional drawing of the back view which shows the structure etc. of a front glass and a front sealing material. It is sectional drawing of the back view which shows the structure etc. of back glass and a back sealing material. It is sectional drawing of the back view which shows the structure etc. of an accommodating chamber, and the flow of air. It is sectional drawing of the top view which shows the position of a communication port, a structure, etc. It is sectional drawing of the back view which shows the structure of the storage chamber etc. which concern on another embodiment, and the flow of air.

[Description of Embodiment]
Hereinafter, a working machine according to the present invention will be described with reference to FIGS.

〔overall structure〕
FIG. 1 and FIG. 2 show a self-removing combine harvester that harvests planted cereal grains while traveling as an example of a working machine according to the present invention.

  In this embodiment, when defining the front-rear direction of the combine 100, it is defined along the airframe traveling direction in the working state. When defining the left-right direction of the combine 100, the left-right direction is defined in a state viewed in the aircraft traveling direction. That is, the direction indicated by reference numeral (F) in FIGS. 1 and 2 is the front side, and the direction indicated by reference numeral (B) is the rear side. In FIG. 2, the direction indicated by the symbol (L) is the left side, and the direction indicated by the symbol (R) is the right side. Note that the vertical direction of the combine 100 is defined as a vertical direction.

  As shown in FIGS. 1 and 2, the combine 100 is placed on the body frame 1 (airframe) in order from the front side F toward the rear side, the harvesting unit 19 for harvesting and harvesting the planted cereals, and the operation on which the operator is boarded. The storage chamber 15 which accommodated the part 2, the engine 3a (refer FIG. 4), and the storage tank 15 which stores a crop are provided. The body frame 1 is supported by a crawler type traveling device 18. The driving unit 2 includes a driving seat 22 on which an occupant sits, a footrest 25, and the like. The driving unit 2 is covered with a cabin 7 having a boarding unit 4. The inside of the cabin 7 is a cab S (see FIG. 3 and the like). The boarding unit 4 includes a boarding door 40 that opens laterally at the boarding port 40a that enters the cab S. The storage chamber C is provided below the operation unit 2. In addition, the storage chamber C is covered with a dustproof case 8 having a dustproof filter 80 from the right lateral outer side of the body.

  As shown in FIGS. 4 and 5, the storage chamber C is partitioned into an engine room C1 (an example of a first space) and a capacitor chamber C2 (an example of a second space). The engine 3a is housed in the engine room C1 together with a radiator 36 that is a heat exchanger of the engine 3a. Engine room C1 is partitioned from cab S and capacitor room C2 by engine bonnet 31 (an example of a partition wall). The capacitor room C2 is partitioned by the cab S and a wall 7c. The condenser room C2 accommodates a condenser 39, which is a heat exchanger of an air conditioner (so-called air conditioner) in the cab S.

  As shown in FIGS. 1 and 2, the harvested product harvested by the harvesting unit 19 is transferred to the threshing device 6 behind the transport unit 19 a via the transport unit 19 a on the left side of the boarding unit 4 (cabin 7) and slightly on the rear side. Be transported. The harvest is handled and processed by the threshing device 6, transported to the storage tank 15 on the right side of the threshing device 6, and temporarily stored. The harvested product stored in the storage tank 15 is transported from the storage tank 15 by a vertical screw conveyor 15c that transports the harvested product upward in accordance with an operator's instruction, and is discharged from the discharge port 15b via the carry-out cylinder 15a. It is discharged outside. The storage tank 15 is pivotable so that the space between the storage chamber C and the storage tank 15 is opened with the rear rotational axis X as an axis. As a result, maintenance of the storage chamber C or the devices disposed between the storage chamber C and the storage tank 15 is possible.

[Configuration of each part]
As shown in FIGS. 3 and 4, the driving unit 2 includes a driver seat 22 on which a passenger is seated, a wall body such as a floor board 21 that serves as a floor of the driver's cab S, a footrest 25 placed on the floor board 21, an operator Has an operation interface for operating the combine 100, an air blower (not shown) of an air conditioner in the cab S, and the like. The driver seat 22 is placed on the engine bonnet 31. The operation unit 2 is supported by the body frame 1 via a plurality of vertical frames that are erected with the lower end fixed to the body frame 1. The cab S of the driving unit 2 is a space partitioned by the cabin 7, the wall 7c, the floor board 21, and the like.

  As shown in FIG. 6, the footrest 25 is a scaffold for a passenger sitting on the driver's seat 22 (see FIG. 3 and the like) to take a comfortable posture during driving operation. The footrest 25 includes an angular U-shaped fixed seat 25a that is fixed to the floor plate 21 and opens upward, a support 25b that is supported by the front wall of the cabin 7 and reinforces the fixation of the fixed seat 25a, and an occupant Has a pair of left and right coupling tools 25c for coupling the scaffold plate 25f on which the foot is placed to the fixed seat portion 25a. The installation height with respect to the floor board 21 of the scaffold board 25f is performed by changing the connection position of the connection tool 25c and the fixed seat part 25a.

  The fixed seat portion 25a has a plurality of mounting holes 25h penetrating in the left-right direction at both planar end portions bent at both ends of the plate material upward. Both end portions of the fixed seat portion 25a are provided so that their surfaces are oriented along the normal in the left-right direction.

  The connector 25c is an L-shaped plate material, and one end extends downward and the other end extends rearward. A plate portion extending below the connector 25c is connected to the fixed seat portion 25a, and the plate portion extending rearward supports the scaffold plate 25f. A nut is welded to the left side surface of the plate portion extending downward from the connector 25c, and a bolt can be inserted from the right side. The connector 25c is in contact with the left side surface of both ends of the fixed seat portion 25a. The connecting tool 25c is fixed to the fixed seat 25a at a desired height by inserting a bolt from the right side where the boarding door 40 is located into the mounting hole 25h of the desired height and screwing it into the nut of the connecting tool 25c. Is done. Accordingly, the occupant can adjust the position of the scaffolding plate 25f to a comfortable height, and at the time of adjusting the position, the passenger can open the boarding door 40 and, for example, reach out from the boarding port 40a and perform bolt installation work. High nature.

  As shown in FIGS. 7 and 8, a heat insulating material 31 b such as glass wool is attached to the inner surface of the operator cab S of the operating unit 2 in the metal plate 31 t of the engine bonnet 31. Further, a finish sheet 31a mainly composed of, for example, vinyl chloride is attached to the surface inside the cab S of the heat insulating material 31b for the purpose of improving the design and airtightness in the cab S.

  A part of the engine bonnet 31 is provided with a maintenance port 32p for performing maintenance of the engine room C1 from the inside of the cab S, and the maintenance port 32p is sealed with a lid 32. The lid 32 has an outer lid portion 32a that covers the maintenance port 32p up to the edge portion 32f of the opening, and 32b that is inserted into the maintenance port 32p. A finishing sheet 31a is attached to the outer lid portion 32a from the surface to the back side of the edge portion of the outer lid portion 32a, and has a so-called walnut structure. Thereby, since the outer peripheral part of the outer cover part 32a is also covered with the finishing sheet 31a, the designability improves.

  As shown in FIG. 8, the heat insulating material 31b is not attached to the edge portion 32f of the maintenance port 32p. As a result, when the maintenance port 32p is sealed with the lid 32, the surface of the finishing sheet 31a of the engine bonnet 31 and the surface of the finishing sheet 31a of the lid 32 are smoothly integrated visually to improve design. To do.

  As shown in FIG. 9, a corner 31 c formed by bending a metal plate 31 t is formed on a part of the engine bonnet 31. The design around the corner 31c is enhanced by, for example, overlapping the finishing sheet 31a in two layers. In FIG. 9, the heat insulating material 31b on the top plate side above the engine bonnet 31 is pasted while being limited to a range slightly inside the top plate, and the heat insulating material 31b on the side wall side of the engine bonnet 31 is attached to the side of the wall surface. The case where it sticks to the range which reaches a little to the top plate side of the corner | angular part 31c is shown in figure. The finishing sheet 31a on the top plate side of the engine bonnet 31 and the finishing sheet 31a on the ridge wall side overlap at the corner portion 31c so that the finishing sheet 31a on the top plate side is on the surface side. Thereby, the finishing sheet 31a is smoothly stuck in the corner | angular part 31c, and the designability improves.

  As shown in FIGS. 3, 4, 14, and the like, the cabin 7 includes a riding part 4, a roof 7 a covering the upper part of the driving part 2, a boarding door 40 with a window, a windshield 7 b, a left side glass 75, a right side The rear glass 76 on the rear, the floor plate 21 that becomes the floor of the cab S, the vertical frame that is a plurality of frames such as the right front column 71 and the rear column 72, and the left column (not shown), the rear surface of the operation unit 2 The other wall body which surrounds the driving | running | working part 2, such as the wall part 7c. The roof 7a is supported by the body frame 1 through these vertical frames. Between the right front column 71 and the right rear column 72 is a boarding gate 40a. In the present embodiment, the front strut 71, the rear strut 72, the frame extending in the front-rear direction supporting the roof 7a, the floor plate 21, and the frame extending in the front-rear direction supporting the rear strut 72 and the floor plate 21 are used. The inside enclosed by the diagonal frame 73 bridge | crosslinked between is the boarding opening 40a. A door seal 40c that tightly contacts the door frame 40b of the boarding door 40 and seals the cab S is attached to the inner peripheral surface of the boarding port 40a.

  As shown in FIG. 1, the boarding unit 4 includes a side-opening boarding door 40 of a boarding opening 40 a that enters the cab S, a hinge 41 that supports the boarding door 40 in a swingable manner, and the like. The boarding door 40 is supported by the rear column 72 so as to be swingable via a hinge 41 integrated with the upper and lower sides. A stopper 45 abuts on the hinge 41 from below and is positioned (see FIG. 11). A lower hinge 41 (hereinafter simply referred to as a hinge 41) is attached adjacently above the connecting portion of the rear column 72 and the diagonal frame 73 in the rear column 72. The boarding door 40 is curved so that the upper and lower central portions of the cabin 7 bulge outward (right side) of the cab S with respect to the upper end portion and the lower end portion of the cabin 7 in a front view.

  As shown in FIG. 10, the door seal 40c is formed of an elastic member such as rubber. The door seal 40c includes a fixing portion 40d for fixing the door seal 40c to the frame of the boarding opening 40a such as the rear column 72, and extends outward from the fixing portion 40d. When the boarding door 40 is closed, the door seal 40c closely And a sealing portion 40e in contact therewith. The seal portion 40e has a circular cross section that intersects the extending direction and is hollow. As shown in FIG. 12, the seal portion 40e urged by the door frame 40b is deformed and tightly seals with the door frame 40b. The seal portion 40e is brought into contact with the door frame 40b from the side surface. As a result, the repelling force of the door seal 40c (the force that biases the boarding door 40 in the opening direction) can be lowered to facilitate the opening / closing of the boarding door 40, and the airtightness in the closed state of the boarding door 40 can be ensured. is there.

  As shown in FIGS. 10 to 13 and the like, the hinge 41 includes a frame side member 42 fixed to the rear column 72 with a bolt or the like, and a door side member 43 fixed to the boarding door 40. The frame side member 42 and the door side member 43 are metal plates having at least a rectangular plate portion 42a and a plate portion 43a. In the present embodiment, the frame-side member 42 has a shaft pin 42c that stands up in the vertical direction on a plate portion 42b that bends and extends from the plate portion 42a. The door-side member 43 has a bearing portion 43c having a through hole along the vertical direction formed by winding a plate portion extending from the plate portion 42a into a cylindrical shape. By inserting the shaft pin 42c through the through-hole of the bearing portion 43c, the frame side member 42 and the door side member 43 are connected so as to be swingable about the shaft pin 42c as a rotation axis.

  The frame side member 42 is fixed to the body outer surface of the rear column 72 in a state where the longitudinal direction of the plate portion 42a extends in the vertical direction and the plate portion 43a extends outward (right side). The frame side member 42 is attached adjacently above the connection portion of the rear column 72 and the oblique frame 73 in the rear column 72. The door-side member 43 is a fuselage of a door frame 40b that extends in the vertical direction on the rear side of the boarding door 40 in a state where the longitudinal direction of the plate portion 43b is along the vertical direction and the bearing portion 43c is positioned on the outer side (right side). It is fixed to the outer surface with bolts.

  As shown in FIGS. 11 and 13, the stopper 45 has at least a first plate portion 46 and a second plate portion 47. The first plate portion 46 and the second plate portion 47 are integrally formed. The stopper 45 is attached adjacent to the lower part of the connecting portion between the rear column 72 and the oblique frame 73 after the oblique frame 73.

  The second plate portion 47 has a plate portion, and the surface of the plate portion (an example of the second surface) is aligned with the outer peripheral surface of the boarding opening 40a in the oblique frame 73 (the surface on the rear side of the oblique frame 73). In the state, it is detachably fixed to the oblique frame 73 with a bolt or the like. As a result, the stopper 45 is fixed to the oblique frame 73. That is, the stopper 45 is fixed to the rear column 72 to which the frame side member 42 is fixed via the oblique frame 73.

  The first plate portion 46 has a plate portion, and the surface of the plate portion (an example of the first surface) is in a state along the body outer surface of the rear column 72. The upper end of the plate portion of the first plate portion 46 is a contact surface formed in a flat shape, and is in contact (per surface) with the lower end (bottom portion) of the frame side member 42. Thereby, the frame side member 42 is supported by the 1st board part 46 from the downward direction, and the hinge 41 and the boarding door 40 are positioned in an up-down direction. If the frame side member 42 is slid in the front-rear direction along the contact surface, the hinge 41 and the boarding door 40 can be easily positioned in the front-rear direction. This positioning is adjusted so that the seal portion 40e contacts the door frame 40b from the side surface.

  As shown in FIGS. 14 to 17, the side glass 75 is a horizontal sliding window provided on the left side surface of the cabin 7. The side glass 75 includes a rectangular window frame 75a, a pair of left and right groove-like rails 75b provided inside the upper and lower frames of the window frame 75a, a pair of front and rear front glasses 75f and 75r, and a front glass 75f. And a pair of front and rear sealing materials 75α and 75β corresponding to the rear glass 75r.

  The front glass 75f slides back and forth along the inner (right) rail 75b. The rear glass 75r slides back and forth along the outer (left side) rail 75b. That is, the rear glass 75r is disposed outside the front glass 75f. The closed state of the side glass 75 (the front glass 75f and the rear glass 75r) is a state in which the front glass 75f is in contact with the front end of the window frame 75a and the rear glass 75r is in contact with the rear end of the window frame 75a.

  The rear glass 75r in the closed position is closer to the transport unit 19a (see FIG. 2) than the front glass 75f in the closed position, but the rear glass 75r is outside the front glass 75f. Due to the arrangement, dust such as rice husks scattered from the conveying portion 19a is less likely to accumulate on the lower rail 75b.

  As shown in FIGS. 16 and 17, the front sealing material 75α and the rear sealing material 75β are formed of an elastic material such as rubber. The front sealing material 75α and the rear sealing material 75β have an L-shaped cross section in which one end of two rectangular plate-like elastic members are connected to each other.

  In the front sealing material 75α and the rear sealing material 75β, an L-shaped inner surface on one end side of the L-shape is fixed to the outer (left) side surface of the lower window frame 75a by bonding or the like. The front sealing material 75α and the rear sealing material 75β are in a state where the L-shaped inner side is pushed open against the elastic force of the elastic material, and the L-shaped inner side on the other end side of the L-shaped is the front glass 75f or the rear glass. It is attached so as to press tightly against 75r. Thereby, since the rail 75b is covered with the front sealing material 75α and the rear sealing material 75β, dust such as rice husks can be prevented from accumulating on the rail 75b. Further, when the cabin 7 is washed with water from the outside, it becomes possible to prevent the washing water from entering the cab S.

  As shown in FIG. 15 and the like, the front sealing material 75α extends from the front end of the window frame 75a to the front end of the rear glass 75r in the closed state. The rear sealing material 75β extends from the rear end of the window frame 75a to the front end of the rear glass 75r in the closed state. The front sealing material 75α overlaps with the closed front glass 75f when viewed in the left-right direction. The rear sealing material 75β overlaps the closed rear glass 75r in the left-right direction view. When the side glass 75 is in the fully closed state, the front sealing material 75α and the rear sealing material 75β are in contact with the front glass 75f and the rear glass 75r, respectively. A corner 75γ above the rear end on the other end side of the L-shape of the front sealing material 75α is chamfered. Although FIG. 15 illustrates a case where the corner 75γ is rounded, it may be chamfered. By such chamfering, the rear glass 75r can be slid forward to reduce the sliding resistance when the rear glass 75r is in sliding contact with the front seal member 75α.

  As shown in FIGS. 3 and 5, the rear glass 76 is a window formed of glass, transparent acrylic, or the like provided on the wall 7 c on the back surface of the operation unit 2. The rear glass 76 is provided on the right rear side of the cabin 7. A passenger seated on the driver's seat 22 can view the precleaner 34 described later via the rear glass 76. The rear glass 76 has a first glass surface 76a along which the normal line extends in the front-rear direction, and a second glass surface 76b connected to the first glass surface 76a via the window corner portion 76r and along which the normal line extends in the left-right direction. The rear glass 76 has an L shape in which a cross section viewed in the vertical direction is recessed toward the inside of the cab S. An L-shaped bent portion of the rear glass 76 is a window corner portion 76r. The window corner 76r is formed with a small bending radius (bending radius (L-shaped inner radius)) of about 5 mm to 15 mm. Therefore, the rear glass 76 secures wide flat portions as the first glass surface 76a and the second glass surface 76b, and the bent portion (window corner portion 76r) whose view is distorted is devised. Thereby, when the passenger seated on the driver's seat 22 views the precleaner 34 through the rear glass 76, the operator's field of view is not distorted and is comfortable.

  As shown in FIGS. 4, 5, 18, etc., the storage chamber C is covered with a dustproof case 8 having a dustproof filter 80 from the outer right side of the aircraft body. The dust filter 80 allows air to pass and does not allow dust such as sawdust to pass. As the dustproof filter 80, for example, a porous material such as a wire mesh or a punching plate is used. The dust-proof case 8 has an upper opening 8U and a lower opening 8L in the frame 8a. The opening 8U and the opening 8L overlap with the dust filter 80 when viewed in the left-right direction. The engine room C1 overlaps the opening 8L in the left-right direction and communicates with the outside through the opening 8L. The capacitor chamber C2 overlaps the opening 8U in the left-right direction and communicates with the outside through the opening 8U. Hereinafter, the dust filter 80 that overlaps the opening 8U in the left-right direction is referred to as a second dust filter unit 80U, and the dust filter 80 that overlaps the opening 8L in the left-right direction is referred to as a first dust filter unit 80L.

  In the storage chamber C, an air cleaner 33 for removing dust from the pre-cleaner 34 that removes dust such as saw dust and rice husk contained in the outside air and supplying the dust to the engine 3a, and a condenser of an air conditioner in the cab S 39, the second blower 38 of the condenser 39, the driving section 3 and the like are accommodated. Among these, the air cleaner 33, the condenser 39, and the second blower 38 are accommodated in the condenser chamber C2. The prime mover 3 is accommodated in the engine room C1. As shown in FIG. 5 and the like, the pre-cleaner 34 is located behind the wall 7c on the back surface of the operation unit 2 and outside the right side of the fuselage, that is, behind the rear glass 76, below the roof 7a, and in the storage chamber. It is arrange | positioned on the wall part which covers the upper direction of C.

  As shown in FIGS. 5, 18, and the like, the prime mover 3 includes an engine 3 a that is an internal combustion engine serving as a power source, a first blower 37 that cools the engine 3 a and the radiator 36 of the engine 3 a, and the like. Have. From the dust-proof case 8 toward the left side, the radiator 36, the shroud 37a for guiding air from the radiator 36 to the first blower 37, the first blower 37, and the engine 3a are arranged in this order.

  The first blower 37 is driven to rotate by an electric motor or the like. The first blower 37 sucks outside air through the dust filter 80 and blows (blows out) air toward the engine 3a, and a second operation mode blows (blows out) air toward the dust proof case 8. Operates in operation mode. The first operation mode and the second operation mode can be changed in accordance with an instruction from a central controller (not shown) of the combine 100. For example, the first blower 37 can be switched between the first operation mode and the second operation mode by switching the rotation direction of the electric motor between normal rotation and reverse rotation.

  In the capacitor chamber C <b> 2, the second blower 38 cools the capacitor 39 by sucking outside air from the first dust filter 80 </ b> L and blowing (blowing) air toward the capacitor 39. The capacitor 39 is disposed at the rear part of the capacitor chamber C2. The second blower 38 is disposed between the air cleaner 33 and the condenser 39. The air blown to the condenser 39 by the second blower 38 is discharged into the space between the condenser 39 and the storage tank 15 (see FIG. 1). The second blower 38 operates (rotates) and stops according to the use state of the occupant's air conditioner, but stops rotating when the first blower 37 operates in the second operation mode.

  As shown in FIG. 19, a partition wall 74 having a communication port 30 that communicates the engine room C1 and the capacitor chamber C2 is provided on the side of the dust proof case 8 (outside the right side of the fuselage) of the engine bonnet 31 in the storage chamber C. ing. The partition wall 74 is mounted on a horizontal frame 73a that is bridged between the oblique frame 73 and the vertical frame 73b of the capacitor chamber C2.

  The communication port 30 is a through hole that penetrates the engine bonnet 31 in the storage chamber C in the vertical direction. An internal filter 35 having a filter material such as a metal net reinforced with a frame material such as a metal plate or a punching metal is detachably attached to the communication port 30. The internal filter 35 allows passage of air and does not allow passage of dust such as sawdust. As a result, even if the engine room C1 is contaminated with dust and flows into the condenser chamber C2 from the engine room C1, the air is filtered by the internal filter 35. Contamination of the capacitor chamber C2 can be avoided. In the present embodiment, the case where a pair of front and rear connection ports 30 are provided is illustrated, but one or three or more connection ports 30 may be provided.

  The flow of air in the storage chamber C will be described. As shown in FIG. 18, when the second blower 38 is operating in the first operation mode, the outside air is sucked by the second blower 38 through the second dustproof filter unit 80U. When the second blower 38 is stopped in the first operation mode, outside air is sucked through the first dust-proof filter portion 80L, and suction of the first blower 37 through the internal filter 35 of the communication port 30 Outside air is sucked through the second dustproof filter 80U. Therefore, in the first operation mode, the clogging of the first dustproof filter unit 80L and the second dustproof filter unit 80U proceeds.

  On the other hand, in the second operation mode, the second blower 38 is stopped and the first blower 37 is blowing air toward the dustproof case 8. A part of the air blown toward the dustproof case 8 by the first blower 37 is exhausted from the engine room C1 toward the outside through the first dustproof filter portion 80L. The other part is filtered through the internal filter 35 and flows into the capacitor chamber C2, and is further exhausted from the capacitor chamber C2 to the outside through the second dustproof filter unit 80U. Thereby, in the second operation mode, air flows in the reverse direction to the first dust filter unit 80L and the second dust filter unit 80U and is regenerated (so-called back-flow cleaning). In the present embodiment, the central control unit alternately switches between the first operation mode and the second operation mode at a predetermined timing. As the predetermined timing, for example, every 60 seconds in the first operation mode, the second operation mode is repeated for 10 seconds, the execution of the first operation mode is resumed, and the following operation is repeated. I do.

  As described above, it is possible to provide a working machine capable of appropriately regenerating a dustproof filter that allows air to flow into the storage chamber and filters dust contained in the air.

[Another embodiment]
(1) In the said embodiment, the case where the internal filter 35 which has a filter material was removable was illustrated. However, the present invention is not limited to the case where the internal filter 35 is detachable. For example, the filter material may be fixed to the outer periphery (engine bonnet 31) of the communication port 30.

(2) In the above embodiment, the case where the internal filter 35 having the filter material is attached to the communication port 30 has been described, but the internal filter 35 may not be attached.

(3) In the above embodiment, in the second operation mode, the case where the second blower 38 is stopped has been described. However, instead of stopping the second blower 38, the speed may be reduced. The degree of deceleration of the second blower 38 in this case requires the principle to the extent that air flows in the reverse direction to the second dustproof filter 80U.

(4) As shown in FIG. 20, the air in the engine room C1 is allowed to flow into the capacitor chamber C2 through the communication port 30, and the air in the capacitor room C2 passes through the communication port 30 and the engine. A check valve 30a (a check mechanism) that prevents the air from flowing into the room C1 may be provided. The check valve 30a is configured to close the communication port 30 from above and to swing and open around a front-rear axis. The check valve 30a is oscillated and biased toward the closing side by a torsion spring (not shown).

  According to such a configuration, a part of the air blown by the first blower 37 toward the first dustproof filter portion 80L flows toward the check valve 30a, so that the check valve 30a becomes the torsion spring. It will swing from the closed state to the open side against the urging force. Thus, when the check valve 30a is opened, part of the air blown by the first blower 37 toward the first dust filter 80L flows into the capacitor chamber C2 through the communication port 30. On the other hand, even if the air in the capacitor chamber C2 flows toward the check valve 30a, the check valve 30a does not swing from the closed state to the open side. Thereby, the air (outside air) that has flowed into the capacitor chamber C2 from the outside through the second dustproof filter 80U does not flow into the engine room C1 through the communication port 30.

  The “check mechanism” according to the present invention is not limited to the check valve 30a. The “non-return mechanism” allows the air in the engine room C1 to flow into the condenser chamber C2 through the communication port 30, and the air in the capacitor room C2 passes through the communication port 30 to the engine room C1. Any mechanism other than the check valve 30a may be used as long as it has a function of preventing the flow into the inside.

  Note that the configurations disclosed in the above-described embodiments (including other embodiments, the same applies hereinafter) can be applied in combination with the configurations disclosed in the other embodiments as long as no contradiction arises. The embodiment disclosed in this specification is an exemplification, and the embodiment of the present invention is not limited to this. The embodiment can be appropriately modified without departing from the object of the present invention.

  The present invention can be used as a work machine such as a combine machine, a paddy field work machine, or a tractor.

2: Driving unit 3a: Engine 30: Communication port 30a: Check valve (check mechanism)
35: Internal filter 36: Radiator 37: First blower 38: Second blower 39: Condenser (heat exchanger)
80: Dust-proof filter 100: Combine (work machine)
C: Storage room C1: Engine room (first space)
C2: Capacitor room (second space)

Claims (5)

The driving department,
A storage room provided below the operating unit;
A partition wall that partitions the storage chamber into a first space in which the engine is stored and a second space;
A dust filter that covers the housing chamber from the outside of the fuselage and allows air flow;
In the first space, a radiator for the engine provided between the engine and the dust filter,
In the first space, a first blower provided between the engine and the radiator and capable of blowing air toward the radiator,
A work machine in which a communication port that communicates the first space and the second space is provided in a laterally outer side portion of the machine body in the partition wall. The partition wall has an internal filter that allows air flow,
The working machine according to claim 1, wherein the internal filter is configured to be detachable from the communication port. In the second space, a heat exchanger different from the radiator, and a second blower for the heat exchanger,
The working machine according to claim 1 or 2, wherein the second blower is configured to blow outside air sucked through the dustproof filter toward the heat exchanger. The first blower is configured to be changeable between a first operation mode for sucking outside air through the dust filter and a second operation mode for blowing air toward the dust filter,
The work machine according to claim 3, wherein the second blower is configured to stop operation when the first blower is in the second operation mode.   Air in the first space is allowed to flow into the second space through the communication port, and air in the second space flows into the first space through the communication port. The working machine according to any one of claims 1 to 4, further comprising a check mechanism for preventing the rotation.

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