JP6594265B2 - Work vehicle - Google Patents

Description

  The present invention relates to an engine room that houses a radiator for cooling the engine and a cooling fan that is arranged on the center side of the radiator body and draws outside air from the outside of the radiator body to supply cooling air to the radiator. A dust-proof case that has a dust-proof ventilation section that allows ventilation and prevents the passage of dust, and that is disposed outside the body of the radiator in a state of covering the outside of the engine room of the engine room, the dust-proof ventilation section, and the The present invention relates to a work vehicle provided with an air-cooled cooling device positioned between a radiator and a radiator.

  The work vehicle described above uses cooling air supplied to the radiator for cooling the cooling device. In this type of work vehicle, the dust-proof case can be changed between a closed state that covers the outside of the engine room body and an open state that opens the outside of the engine room body, and supports the cooling device. A support member is coupled to the engine room side member via a hinge member, and the cooling device can swing with the support member in a normal posture facing the radiator and an open posture away from the radiator. For example, by changing the dustproof case to the open state and swinging the cooling device to the open posture, the outside of the radiator body can be opened, and the radiator can be easily cleaned and inspected.

  Conventionally, for example, there is a combine shown in Patent Document 1 as this type of work vehicle. In this combine, the dustproof case is swingably supported from a working position (corresponding to a closed state) to a retreating position (corresponding to an open state) for retreating outward from the machine body. A frame body that supports an oil cooling device (corresponding to a cooling device) is swingably supported, and the oil cooling device can be swung laterally outward together with the frame body. In this combine, the hydraulic oil pipe of the oil cooling device is displaced in the direction along the swing axis of the frame relative to the swing pivot of the frame, and the swing of the frame relative to the swing pivot is It extends from the oil cooling device toward a position displaced in a direction perpendicular to the axis.

JP 2014-125106 A

  In the conventional case, it is necessary to increase the length of the hydraulic oil pipe in order to make it difficult to apply excessive stress to the hydraulic oil pipe when the cooling device is swung.

  The present invention can open the outside of the radiator body, facilitate cleaning and inspection of the radiator, and making it difficult to apply excessive stress to the supply hose and the discharge hose when the cooling device is swung, Provided is a work vehicle capable of shortening a supply hose and a discharge hose.

The work vehicle according to the present invention is:
An engine room that houses a radiator for cooling the engine, and a cooling fan that is disposed on the center side of the radiator body, draws outside air from the outside of the radiator body, and supplies cooling air to the radiator.
A dust-proof case that has a dust-proof ventilation section that allows ventilation and prevents the passage of dust, and is disposed outside the radiator body in a state of covering the outside of the engine room body;
An air-cooled cooling device located between the dust-proof ventilation part and the radiator,
The dust-proof case can be changed between a closed state that covers the outer side of the engine room body and an open state that opens the outer side of the engine room body,
A support member that supports the cooling device is connected to a member on the engine room side via a hinge member, and the cooling device, together with the support member, has a normal posture facing the radiator, and an open posture that is separated from the radiator. Can swing over
The supply hose and the discharge hose connected to the cooling device are configured by a flexible member and extended from the cooling device toward the hinge member ,
The cooling device is supported by a portion of the support member near the hinge member,
The supply hose and the discharge hose are provided with a deformation absorbing portion formed in a shape that is bent in an S shape when viewed from the outside of the machine body, and the swinging operation of the cooling device is performed by the deformation absorbing portion. The deformation of the supply hose and the discharge hose based on is absorbed .

  According to this configuration, the outside of the radiator body can be opened by changing the dustproof case to the open state and swinging the cooling device to the open position. Since the supply hose and the discharge hose of the cooling device are extended from the cooling device toward the hinge member, the refrigerant path connecting the cooling device and the device that is the cooling target of the cooling device is the swing axis of the cooling device. The lengths of the supply hose and the discharge hose can be shortened as compared with the conventional ones even if the supply hose and the discharge hose are not easily deformed when the cooling device is swung.

  Therefore, since the radiator can be opened laterally, and the supply hose and discharge hose are not subject to excessive stress when the cooling device is swung, and the cooling device can be lightly swung. It is easy to do. When the radiator is easily cleaned or inspected, the supply hose and the discharge hose can be shortened so that the assembling work can be performed easily and at low cost.

  According to this configuration, since the load of the cooling device is applied to the portion of the support member near the pivot axis, and the cooling device is located at the portion of the support member near the hinge member, the cooling device and the hinge member Even if the distance is shortened, the supply hose and the discharge hose are prevented from absorbing stress due to the deformation absorption part due to the deformation of the supply hose and the discharge hose due to the swing of the cooling device. Since it is difficult to become resistance to swinging, the cooling device can be swung lightly. Moreover, the service life of the supply hose and the discharge hose can be improved.

In order to make the present invention more suitable, the following configuration is provided.
An engine room that houses a radiator for cooling the engine, and a cooling fan that is disposed on the center side of the radiator body, draws outside air from the outside of the radiator body, and supplies cooling air to the radiator.
A dust-proof case that has a dust-proof ventilation section that allows ventilation and prevents the passage of dust, and is disposed outside the radiator body in a state of covering the outside of the engine room body;
An air-cooled cooling device located between the dust-proof ventilation part and the radiator,
The dust-proof case can be changed between a closed state that covers the outer side of the engine room body and an open state that opens the outer side of the engine room body,
A support member that supports the cooling device is connected to a member on the engine room side via a hinge member, and the cooling device, together with the support member, has a normal posture facing the radiator, and an open posture that is separated from the radiator. Can swing over
The supply hose and the discharge hose connected to the cooling device are configured by a flexible member and extended from the cooling device toward the hinge member,
A plurality of the cooling devices are supported on the support member,
A plurality of the cooling devices are distributed and arranged in a portion near the hinge member and a portion near the free end side of the support member,
A deformation absorbing portion formed in a shape that cranks in an S shape when viewed from the outside of the fuselage at the portion near the hinge member in the supply hose and the discharge hose for the cooling device supported by the portion near the hinge member. The deformation absorbing portion absorbs the deformation of the supply hose and the discharge hose based on the swing operation of the cooling device,
The supply hose and the discharge hose for the cooling device supported by the portion closer to the free end side are substantially straight lines that do not bend in an S shape between the cooling device and the hinge member when viewed from the outside of the machine body. It was configured to be extended into a shape.

  According to this configuration, the load of the cooling device located near the hinge member of the support member is applied to the portion of the support member near the swing axis, and when the cooling device is swung, the cooling near the hinge member is performed. Forcible deformation of the supply hose and the discharge hose of the device is prevented by the deformation absorbing portion, and the supply hose and the discharge hose are hardly resistant to the swinging of the support member, so that the cooling device can be swung lightly.

When the cooling device is in the open position, the cooling device located near the free end of the support member can be positioned away from the radiator, and the cooling device can clean and inspect the radiator. It is hard to be caused by obstacles. The supply hose and the discharge hose of the cooling device near the free end of the support member are extended in a substantially straight line between the cooling device and the hinge member so as not to be bent in an S shape when viewed from the outside of the machine body. It is possible to smoothly supply the refrigerant to the device and take out the refrigerant from the cooling device with little resistance by the supply hose and the discharge hose.

In order to make the present invention more suitable, the following configuration is provided.
A plurality of the cooling devices are supported by the support member, and the plurality of cooling devices are distributed and arranged in a portion closer to the hinge member and a portion closer to the free end of the support member,
In the direction along the swing axis of the cooling device, the width of the cooling device supported by the portion closer to the free end side is larger than the width of the cooling device supported by the portion closer to the hinge member. ,
The supply hose and the discharge hose for the cooling device supported by the portion closer to the free end side are provided at intervals in a direction along the swing axis,
The cooling device supported by the portion close to the hinge member is provided in a state of being located within the interval as seen from the outside of the fuselage ,
The supply hose and the discharge hose for the cooling device supported at a portion near the hinge member are extended toward the hinge member within the interval as viewed from the outside of the machine body .

According to this structure, the load of the cooling device located in the site | part near the hinge member of a support member is applied to the site | part near the rocking | fluctuation axis center of a support member. The cooling device near the hinge member as viewed from the outside of the machine body , and the supply hose and the discharge hose of the cooling device are located within the interval between the supply hose and the discharge hose of the cooling device near the free end side. The supply hose and the discharge hose of the device can be arranged with a simple arrangement configuration so as not to become a rocking resistance of the cooling device, and the cooling device can be lightly swung easily.

  According to this configuration, the cooling device near the hinge member, and the supply hose and the discharge hose near the hinge member in the direction orthogonal to the swing axis of the cooling device Since it is located within the interval with the discharge hose, each cooling device, each supply hose and each discharge hose can be compactly packed so that the bulk in the swinging direction of the support member is reduced, and the work of cleaning and checking the radiator can be performed When performing, each cooling device, each supply hose and each discharge hose are not easily obstructed, and work is easy.

In order to make the present invention more suitable, the following configuration is provided.
The cooling device has a configuration capable of swinging around a swing axis along the vertical direction of the machine body.

  According to this configuration, when performing work for cleaning and inspecting the radiator, the cooling device in the open posture can be biased in the longitudinal direction of the machine body with respect to the radiator, and the cooling device is less likely to become an obstacle, and the work is performed. Cheap.

In order to make the present invention more suitable, the following configuration is provided.
A frame-shaped radiator support member for supporting the radiator is provided, the support member is configured in a frame shape, and is connected to the radiator support member by the hinge member, and a free end side portion of the support member is defined. The radiator support member is provided with a lockable device that can be fixed.

  According to this configuration, the cooling air drawn into the inside of the dust-proof case from the outside of the dust-proof case through the dust-proof ventilation section passes through the inside of the frame of the support member and reaches the radiator. It is easy to supply cooling air accurately. Further, the cooling device can be supported by a simple support structure in which the radiator support member is used as a support member and a fixing member of the support member.

In order to make the present invention more suitable, the following configuration is provided.
An engine room that houses a radiator for cooling the engine, and a cooling fan that is disposed on the center side of the radiator body, draws outside air from the outside of the radiator body, and supplies cooling air to the radiator.
A dust-proof case that has a dust-proof ventilation section that allows ventilation and prevents the passage of dust, and is disposed outside the radiator body in a state of covering the outside of the engine room body;
An air-cooled cooling device located between the dust-proof ventilation part and the radiator,
The dust-proof case can be changed between a closed state that covers the outer side of the engine room body and an open state that opens the outer side of the engine room body,
A support member that supports the cooling device is connected to a member on the engine room side via a hinge member, and the cooling device, together with the support member, has a normal posture facing the radiator, and an open posture that is separated from the radiator. Can swing over
The supply hose and the discharge hose connected to the cooling device are configured by a flexible member and extended from the cooling device toward the hinge member,
The cooling device is an oil cooling device,
An air cooling device supported by a radiator supporting member that supports the radiator in a state of being located outside the airframe of the cooling device;
The cooling device is configured to be swingable only in a state where the air cooling device is detached from the radiator support member.

  According to this configuration, even if the supply hose and the discharge hose are removed, the refrigerant that leaks out is air, and the air cooling device that does not interfere is removed. If the supply hose and the discharge hose are removed, the refrigerant oil leaks out. Since the oil cooling device to be turned is swung to the open position with the supply hose and the discharge hose connected, the air cooling device is also moved with the supply hose and the discharge hose connected, and the oil cooling device is shaken. Compared to the configuration that enables movement, the support structure of the air cooling device can be made simple and can be obtained at low cost.

In order to make the present invention more suitable, the following configuration is provided.
An engine room that houses a radiator for cooling the engine, and a cooling fan that is disposed on the center side of the radiator body, draws outside air from the outside of the radiator body, and supplies cooling air to the radiator.
A dust-proof case that has a dust-proof ventilation section that allows ventilation and prevents the passage of dust, and is disposed outside the radiator body in a state of covering the outside of the engine room body;
An air-cooled cooling device located between the dust-proof ventilation part and the radiator,
The dust-proof case can be changed between a closed state that covers the outer side of the engine room body and an open state that opens the outer side of the engine room body,
A support member that supports the cooling device is connected to a member on the engine room side via a hinge member, and the cooling device, together with the support member, has a normal posture facing the radiator, and an open posture that is separated from the radiator. Can swing over
The supply hose and the discharge hose connected to the cooling device are configured by a flexible member and extended from the cooling device toward the hinge member,
It is disposed between the engine room and the dust-proof case, and includes a case that houses the cooling device and the support member.
A cleaning port is opened at the corner between the bottom and the vertical wall of the case,
A lid that is detachable from the case and capable of closing the cleaning port;
Of the cleaning port, a bottom cover portion that closes a bottom opening portion that opens to the bottom portion, and a vertical lid that closes a vertical opening portion that opens to the vertical wall portion of the cleaning port. And the bottom lid portion is configured to engage with the bottom portion by insertion along the extending direction of the bottom portion, and the vertical lid portion is applied to an outer surface of the vertical wall portion It was configured to be fixed.

According to this configuration, when dust located inside the case is swept into the cleaning port, the dust not only falls out of the case from the bottom opening, but also out of the case from the vertical opening. Is not likely to remain at the corners or hit the vertical wall and return to the bottom, and can be cleaned quickly and accurately.
According to this configuration, the bottom lid is engaged and supported by the bottom portion by being inserted into the cleaning port of the lid from the side where the vertical opening is positioned, so that the bottom lid is engaged with the bottom portion. The lid can be easily fixed to the case simply by fixing to the outer surface of the vertical wall. The cleaning port can be easily closed.
In order to make the present invention more suitable, the following configuration is provided.
A plurality of pipe materials are supported on the periphery of the case in a state of penetrating into and out of the case,
From the pipe material, the supply hose and the discharge hose are connected to an end portion on the inner side of the case, and the other end portion of the pipe material is a device to be cooled by the cooling device. The device side supply hose and the device side discharge hose were connected.
According to this configuration, the supply hose and the discharge hose of the cooling device located inside the case are connected to the pipe material supported by the case inside the case, and the device side from the device to be cooled located outside the case By connecting the supply hose and the device-side discharge hose to the pipe material supported by the case outside the case, the cooling device and the device to be cooled can be connected. Therefore, the supply hose and the discharge hose extending from the cooling device are pulled out to the outside of the case through the periphery of the case, and are extended to the device to be cooled outside the case and connected to the device to be cooled. Compared to connecting the supply hose and the discharge hose extending from the device to be cooled to the inside of the case through the case and extending to the cooling device inside the case. The supply path and the discharge path are configured and deployed easily.

It is a right view which shows the whole combine. It is a top view which shows the whole combine. It is a top view which shows a cover body. FIG. 4 is a sectional view taken along the line IV-IV in FIG. 3. It is a right view which shows the drive part of a dust-proof case in an open state. It is a rear view which shows a drive part. It is a top view which shows the oil cooling apparatus of a normal attitude | position, and the dustproof case of a closed state. It is a right view which shows the oil cooling apparatus of the state by which the lateral outer side was open | released. It is a top view which shows the radiator of the state by which the lateral outer side was open | released. It is a right view which shows the radiator of the state by which the lateral outer side was open | released. It is a perspective view which shows the oil cooling apparatus made into the open attitude | position. It is a right view which shows a radiator support member and a support member. It is a right view which shows the support structure of a pipe material. It is a XIV-XIV cross-sectional arrow view of FIG . It is a perspective view which shows a cleaning opening and a cover body. It is a rear view which shows a cleaning mouth. It is a vertical side view which shows a cover body. It is a vertical side view which shows the cleaning mouth of a closed state.

  Hereinafter, the case where the embodiment of the work vehicle according to the present invention is applied to a combine 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. 1 and 2, the direction of [F] is the front side of the self-propelled aircraft, the direction of [B] is the rear side of the self-propelled aircraft, the direction of [L] is the left side of the self-propelled aircraft, and the direction of [R] is It is defined as the right side of the airframe.

  As shown in FIG. 1, the combine includes a self-propelled machine body in which a machine body frame 1 is configured by connecting a plurality of steel materials such as a square pipe material. A boarding operation unit 2 is formed at the front of the body frame 1. The boarding operation unit 2 is equipped with a cabin 2a that covers the boarding space. A driving unit 4 provided with an engine 3 is provided below the boarding operation unit 2. A pair of left and right crawler type traveling devices 5 are provided at the lower part of the body frame 1. The front end of the body frame 1 is coupled with a cutting and transporting portion 6 that harvests and transports rice husks such as rice, wheat, and rapeseed, which are located in front of the body during operation, in a state that can swing up and down. is there. The up-and-down swinging of the cutting and conveying unit 6 is performed by an expansion and contraction operation of a hydraulic lifting cylinder (not shown) installed over the body frame 1 and the feeder 7. The machine body frame 1 is provided with a threshing device 8 that accepts a threshing culm carried by the reaping and conveying unit 6 as a threshing target object, threshs it, and performs a sorting process on the processed product after the threshing process. On the rear side of the boarding operation unit 2 in the machine body frame 1, a grain tank 9 for collecting and storing the single-grained grains conveyed from the threshing apparatus 8 by the lifting device 8 a is provided. When the grain stored in the grain tank 9 is taken out, it is conveyed from the grain tank 9 by the screw conveyor type carry-out device 10 extended from the rear end portion of the grain tank 9, and the discharge cylinder 10 a of the carry-out device 10. Discharged from.

The cutting and conveying unit 6 will be described.
As the aircraft moves, the harvesting and conveying unit 6 separates uncut cereals into cereals to be harvested and cereals that are not to be harvested by dividers 11 arranged at the left and right ends of the front part. Further, the rotary reel 12 disposed above the front part of the cutting and conveying unit 6 is raked with the tip side of the harvested culm facing backward, and the harvesting target is harvested by the clipper-type cutting device 13 provided at the bottom of the cutting and conveying unit 6. Cut the grain side of the grain and harvest the harvested grain. The crossed auger 14 arranged behind the mowing device 13 gathers the harvested cereals to a predetermined location and sends them to the rear. The feeder 7 installed over the threshing device 8 from the predetermined location puts the harvested cereals into the threshing device 8. To do.

  As shown in FIG. 2, an inspection port 20 having a size that allows an operator to enter and exit is provided in the top plate portion of the grain tank 9. The inspection port 20 is configured to be opened and closed by a lid body 21 supported on the top plate portion through a hinge member 27 so as to be swingable and openable.

  As shown in FIG. 3, the lid body 21 is made of a sheet metal lid frame 23 to which a hinge member 27 is coupled, and a resin-made transparent frame that is coupled to the lid frame 23 and closes a rectangular hole of the lid frame 23. And a plate 22. A lateral end portion of the lid frame 23 rises upward from the lid frame 23 and is formed at a bent end portion 23a having a function of a reinforcing rib. The transparent plate 22 is connected to the back side of the lid frame 23. The transparent plate 22 and the lid frame 23 are inserted through the lid frame 23, the transparent plate 22, and the sheet metal contact plate 24 applied to the back side of the transparent plate 22 at a plurality of locations around the rectangular hole of the lid frame 23. Are connected by rivets 25. Of the plurality of rivet holes 26 of the transparent plate 22, only one rivet hole 26a located at the center in the longitudinal direction of one of the two long sides of the transparent plate 22 has a hole diameter of rivet as shown in FIG. A reference hole having a size close to the outer diameter of 25 is formed. As shown in FIG. 4, all the rivet holes 26 other than the reference hole among the plurality of rivets 25 are formed as interchange holes whose hole diameter is considerably larger than the outer diameter of the rivet 25. When the temperature of the lid frame 23 and the transparent plate 22 is increased, the lid 21 is bent and deformed due to the difference in thermal expansion coefficient between the lid frame 23 and the transparent plate 22. And the transparent plate 22 can prevent the movement. At this time, the positional deviation between the lid frame 23 and the transparent plate 22 can be prevented by positioning with the reference hole.

The driving unit 4 will be described.
As shown in FIGS. 1, 5, 6, and 7, the driving unit 4 includes an engine bonnet 30 that is supported in a fixed state on the body frame 1 at a lower portion of the boarding operation unit 2. The driver's seat 2b is attached to the top plate portion of the engine bonnet 30, and the engine bonnet 30 constitutes a support for the driver's seat 2b.

  An intake case 31 is provided on the rear side of the driver's seat 2b on the top plate portion of the engine bonnet 30. An air cleaner 32 for the engine is accommodated in the intake case 31. As shown in FIGS. 1 and 6, an intake cylinder 33 extends from the air cleaner 32 toward the upper side of the fuselage. A pre-air cleaner 34 is attached to the extended end of the intake cylinder 33.

  An engine room 35 is formed by the engine bonnet 30. The engine room 35 is provided with an engine 3, a radiator 36 and a cooling fan 37. The engine 3 is supported by the body frame 1 in a mounting posture in which the crankshaft is lateral to the body. The radiator 36 is disposed on the outer right side of the fuselage with respect to the engine 3, and is supported by a radiator support member 38. As shown in FIGS. 5, 6, 7, and 12, the radiator support member 38 extends downward in the longitudinal direction along the lower portion of the radiator 36 and extends in the longitudinal direction along the upper portion of the radiator 36. A front vertical frame member 38c extending in the vertical direction of the machine body along the front portion of the radiator 36 and connecting the front end portions of the lower front / rear frame member 38a and the upper front / rear frame member 38b; The rear vertical frame member 38d that extends in the vertical direction along the rear portion of the radiator 36 and connects the rear end portions of the lower front-rear facing frame member 38a and the upper front-rear facing frame member 38b is arranged sideways of the cooling fan 37. It is configured in a frame shape that opens the outside. The frame member 38a facing downward is connected to the machine body frame 1 by a connecting bolt, and the radiator support member 38 is supported by the machine body frame 1 in a fixed state.

  As shown in FIGS. 6 and 7, the cooling fan 37 is disposed on the center side of the machine body with respect to the radiator 36 in a state positioned between the radiator 36 and the engine 3, and is attached to the engine 3 via the rotation support shaft 37 a. It is supported for relative rotation. The rotation support shaft 37 a and the output shaft 3 a of the engine 3 are interlocked and connected by a transmission belt 39. The cooling fan 37 is rotationally driven by the engine 3. A fan shrad 40 is supported by the radiator 36.

  As shown in FIGS. 6 and 7, a dustproof case 41 is arranged on the lateral outer side of the airframe with respect to the radiator 36. The rear end side of the dustproof case 41 is supported by the support frame portion 43 a via a pair of upper and lower pivot members 42. A lower portion of the support frame portion 43 a is formed at a lateral outer end portion of the cooling device case 43 disposed between the dustproof case 41 and the engine room 35. The upper portion of the support frame portion 43 a is formed at the lateral outer end of the intake case 31. The cooling device case 43 is supported by a radiator support member 38.

  As shown in FIGS. 5, 6, 7, and 12, the cooling device case 43 is connected along the bottom 43 b that is connected along the lower front / rear frame 38 a and the upper front / rear frame 38 b. The top 43c, the front vertical wall 43d connected along the front vertical frame member 38c, and the rear vertical wall 43e connected along the rear vertical frame member 38d. The radiator 36 is supported by the radiator support member 38 in a state in which the lateral side of the radiator 36 is opened.

  The dust-proof case 41 is supported by the radiator support member 38 via the pivotal support member 42 and the case 43, and can be swung with the shaft core extending in the vertical direction of the body of the pivotal support member 42 as the swinging shaft core P. . The dustproof case 41 swings away from the support frame portion 43a to the outer side of the fuselage, and contacts the side surface of the support frame portion 43a and an open state in which the intake case 31 and the engine room 35 are opened laterally outside. The state of the intake case 31 and the engine room 35 can be changed to a closed state covering the lateral sides of the airframe.

  When the dustproof case 41 is closed, the dustproof ventilation part 41 a (see FIGS. 1 and 7) formed in the lower part of the dustproof case 41 faces the radiator 36. The dustproof ventilation part 41 a causes the air outside the dustproof case 41 to pass inside by the suction action of the cooling fan 37 and directs it to the radiator 36 as cooling air. The dustproof ventilation part 41a includes a dustproof net, and prevents dust from passing through when dust such as straw scraps comes along with the air drawn into the dustproof case 41.

  As shown in FIGS. 5 and 7, two air-cooled oil cooling devices 51 and 52 (corresponding to the cooling device) and one air-cooled air cooling device 53 (air cooling device) are provided in the case 43 for the cooling device. Is equivalent). The air cooling device 53 is located on the outer side of the airframe from the two oil cooling devices 51 and 52. In the closed state of the dustproof case 41, the two oil cooling devices 51 and 52 and the one air cooling device 53 are positioned between the dustproof ventilation portion 41 a and the radiator 36.

  The two oil cooling devices 51 and 52 are supported by a support member 54 that can be accommodated in the case 43. As shown in FIGS. 5 and 12, the support member 54 includes a pair of upper and lower front and rear frame members 54a, a front vertical frame member 54b that connects the front end portions of the upper and lower front and rear frame members 54a, The frame is formed into a frame shape by a vertical vertical middle frame member 54c that connects the middle part of the front and rear frame member 54a and a vertical vertical frame member 54d that connects the rear end of the vertical front and rear frame member 54a. Thus, the cooling air passing through the oil cooling devices 51 and 52 can flow to the radiator 36.

  As shown in FIGS. 5, 7, and 12, a pair of upper and lower hinge members 55 extends across the front vertical frame member 54 b as the front end portion of the support member 54 and the support portion 38 e provided on the front vertical frame member 38 c of the radiator support member 38. Are connected. The support member 54 is supported by a radiator support member 38 (corresponding to a member on the engine room side) via upper and lower hinge members 55, and swings an axis that the upper and lower hinge members 55 have in a state along the vertical direction of the fuselage. The shaft core X can be swung. By swinging the support member 54, the two oil cooling devices 51 and 52 swing together with the support member 54, and the two oil cooling devices 51 and 52 are opened to open the lateral side of the radiator 36. The normal posture facing the radiator 36 can be switched. In a state where the oil cooling devices 51 and 52 are in the normal posture, the support member 54 is positioned within the frame of the radiator support member 38 in a side view of the airframe.

  When the two oil cooling devices 51 and 52 are switched to the normal posture, the rear vertical frame member 54d as the free end portion of the support member 54 contacts the rear vertical frame member 38d of the radiator support member 38, and the rear vertical frame The material 54d can be fixed to the rear vertical frame material 54d by a pair of upper and lower locks 50. The two oil cooling devices 51 and 52 can be fixed in a normal posture. In this embodiment, the locking device 50 is constituted by a screw member having a knob-shaped rotation operation portion. As the locking device 50, various locking members such as a lock pin can be employed.

  The two oil cooling devices 51 and 52 are constituted by oil cooling devices having different widths in the direction along the swing axis X, and are supported in a state of being aligned in the front-rear direction of the machine body in a normal posture. The oil cooling device 51 having a smaller width is supported by a portion of the support member 54 near the hinge member. The oil cooling device 52 having the larger width is supported by a portion of the support member 54 that is closer to the free end side.

Hereinafter, the oil cooling device 51 having the smaller width is referred to as the oil cooling device 51 closer to the hinge member, and the oil cooling device 52 having the larger width is referred to as the oil cooling device 52 closer to the free end side. To do.
The oil cooling device 51 close to the hinge member is connected to a working unit drive device (corresponding to a device to be cooled) that drives the lifting cylinder and the like of the cutting conveyance unit 6 by using the lubricating oil of the traveling mission as the working oil. It is connected. The working oil for driving the working unit circulates between the oil cooling device 51 and the working unit driving device by a feed action of an oil pump (not shown). The oil cooling device 52 closer to the free end side is connected to a hydrostatic continuously variable transmission (not shown) provided in a traveling mission (not shown) by a pair of circulating oil passages 57. The hydraulic oil of the continuously variable transmission circulates between the oil cooling device 52 and the continuously variable transmission by a feed action of an oil pump (not shown).

  As shown in FIGS. 5, 7, 13, and 14, four metal pipe members 58 and 59 are placed on the inside and outside of the case 43 on the front vertical wall portion 43 d (corresponding to the peripheral portion) of the case 43 for the cooling device. It is supported in a state of penetrating through. Of the vertical wall portion 43d, the vertical wall portion 43f supporting the four pipe members 58 and 59 is configured in a divided structure so that it can be attached to and detached from other portions.

  The pair of circulating oil passages 56 connected to the oil cooling device 51 near the hinge member corresponds to a pair of pipe members 58 of the four pipe members, a supply hose 56a and a discharge hose 56a on the cooling device side. A pair of circulation hoses 56a on the cooling device side and a pair of circulation hoses 56b on the apparatus side corresponding to a supply hose 56b and a discharge hose 56b on the apparatus side are provided. The pair of circulation hoses 56a on the cooling device side are extended from the oil cooling device 51 toward the hinge member 55, and are connected to the end portions on the inner side of the case 43 in the pair of pipe members 58 at the extended ends. Has been. The pair of circulation hoses 56b on the apparatus side are extended from the working unit driving device toward the case 43, and are connected to the external ends of the case 43 in the pair of pipe members 58 at the extended ends. .

  The pair of circulation hoses 56a on the cooling device side is configured by a flexible member so that the oil cooling device 51 can swing. A deformation absorbing portion 60 formed in a shape that bends in an S shape when viewed in a direction orthogonal to the swing axis X of the oil cooling device 51 is provided at a position near the hinge member in the pair of circulation hoses 56a on the cooling device side. is there. The deformation absorbing portion 60 extends in an S shape with the swing of the oil cooling device 51, thereby concentrating the deformation of the circulation hose 56a based on the swing operation of the oil cooling device 51 in a narrow range of the circulation hose 56a. Absorb so that it does not occur. In this embodiment, a shape that cranks in an S shape is adopted as a shape that bends in an S shape. A string-wound spring shape can be adopted as the shape that bends in an S shape.

A pair of circulating oil passages 57 connected to the oil cooling device 52 closer to the free end side corresponds to a pair of pipe members 59 of the four pipe members, a supply hose 57a and a discharge hose 57a on the cooling device side. And a pair of circulation hoses 57b on the apparatus side corresponding to a supply hose 57b and a discharge hose 57b on the apparatus side. The pair of circulation hoses 57a on the cooling device side are extended from the oil cooling device 52 toward the hinge member 55, and are connected to the ends on the inner side of the case 43 of the pair of pipe members 59 at the extended ends. Has been. The pair of circulation hoses 57b on the device side are extended from the continuously variable transmission toward the case 43, and are connected to the outer end of the case 43 in the pair of pipe members 59 at the extended ends. .
The pair of circulation hoses 57a on the cooling device side is configured by a flexible member so that the oil cooling device 52 can swing. The pair of circulation hoses 57a on the cooling device side is S-shaped between the oil cooling device 52 and the hinge member 55 in a portion 57c near the cooler as viewed in a direction orthogonal to the swing axis X of the oil cooling device 52. It is extended in a substantially straight line that does not bend. As a substantially straight line shape that does not bend into an S shape, a shape that extends in a loosely curved state or a loosely bent state can be employed.

  The pair of circulation hoses 57a on the cooling device side of the oil cooling device 52 near the free end side is provided with a space D in the direction along the swing axis X of the oil cooling device 52 in the portion 57c near the cooler. It is. The oil cooling device 51 near the hinge member is provided in a state of being located within the interval of the circulation hose 57a when viewed in a direction orthogonal to the swing axis X. The pair of circulation hoses 56a of the oil cooling device 51 close to the hinge member extends in the space between the circulation hoses 57a toward the hinge member 55 when viewed in a direction orthogonal to the swing axis X.

  A mounting portion 53a provided on the upper end side of the air cooling device 53 is connected to a pair of support portions 38f formed on the upper and rearward facing frame member 38b of the radiator support member 38 by connecting bolts. A mounting portion 53b provided on the lower end side of the air cooling device 53 is connected to a middle vertical frame member 54c of the support member 54 by a connecting bolt. The air cooling device 53 is detachably supported on the radiator support member 38 and the support member 54.

  The air cooling device 53 is connected to a circuit for supplying combustion air to the engine 3 by a pair of supply and exhaust pipes 61 corresponding to a supply pipe and an exhaust pipe. The combustion air is cooled by the air cooling device 53 and then supplied to the engine 3.

  As shown in FIGS. 5 and 7, the oil cooling devices 51 and 52 are normally in the normal position and the dustproof case 41 is closed as shown in FIGS. 5 and 7, so that the air outside the dustproof case 41 is sucked by the cooling fan 37. Is drawn into the inside through the dustproof ventilation part 41a and becomes cooling air, and the cooling air is supplied to the two oil cooling devices 51 and 52 and the air cooling device 53 to cool the oil of the oil cooling devices 51 and 52, and the air cooling device 53, the working oil of the continuously variable transmission and the working unit driving device can be cooled, and the combustion air supplied to the engine 3 can be cooled. Cooling air that has passed through the oil cooling devices 51 and 52 and the air cooling device 53 and cooling air that has not passed through the oil cooling devices 51 and 52 and the air cooling device 53 are supplied to the radiator 36 to cool the engine cooling water of the radiator 36. Then, the engine 3 can be cooled.

  When cleaning and checking the radiator 36, as shown in FIG. 5, if the dustproof case 41 is switched to the open state and the lateral side of the air cooling device 53 can be opened, as shown in FIG. 53 and the pair of supply / discharge pipes 61 are released, the connection of the upper attachment portion 53a to the support portion 38f is released, and the connection of the lower attachment portion 53b to the middle vertical frame member 54c is released. Then, the air cooling device 53 is detached from the radiator support member 38 and the support member 54. When the lateral sides of the oil cooling devices 51 and 52 can be opened, as shown in FIGS. 9, 10, and 11, the upper and lower locks 50 can be released and the fixing of the support member 54 to the radiator support member 38 can be released. Then, the support member 54 is swung to the outer side of the machine body, and the two oil cooling devices 51 and 52 are opened. At this time, the deformation absorbing portion 60 prevents the oil cooling device 51 from being in the released posture while preventing the stress concentration caused by the swing of the oil cooling device 51 from occurring in the circulation hose 56a of the oil cooling device 51 on the hinge member side. it can. When the oil cooling devices 51 and 52 are in the open posture, the machine body lateral outer side of the radiator 36 is opened, and a work space facing the radiator 36 can be secured.

  As shown in FIGS. 15 and 16, a cleaning port 65 is opened at the corner between the bottom 43 b of the cooler case 43 and the vertical wall 43 e on the rear side. The cleaning port 65 forms a bottom opening 65a opened in the bottom 43b, a vertical opening 65b opened in the vertical wall 43e, a bent end of the plate member forming the bottom 43b, and the vertical wall 43e. And a back opening 65c opened at the bent end of the plate member.

  When cleaning the inside of the case 43, as in the case of cleaning and checking the radiator 36, the dustproof case 41 is opened, the air cooling device 53 is removed, and the oil cooling devices 51 and 52 are opened, and the case 43 When the inside is opened, dust is swept away from the bottom opening portion 65a to the outside of the case by sweeping dust to the cleaning port 65 at the bottom portion 43b, and also from the vertical opening portion 65b and the back opening portion 65c to the outside of the case. to go out.

  The cleaning port 65 is opened and closed by a lid 66 as shown in FIG. As shown in FIGS. 15 and 16, the lid 66 includes a bottom lid 66a, a vertical lid 66b that rises from the rear end of the bottom lid 66a, and a back that is continuous with the vertical lid 66b and the bottom lid 66a. And a lid 66c. The bottom lid portion 66a is provided with a pair of upper and lower tongue pieces 67.

  When closing the cleaning port 65, as shown in FIG. 18, by inserting the lid 66 into the cleaning port 65 in the direction along the bottom 43b from the rear, the bottom lid 66a is inserted into the bottom 43b from the rear and the bottom opening. 65a is closed, the back cover 66c enters the back opening 65c, closes the back opening 65c, and the vertical cover 66b comes into contact with the outer surface of the vertical wall 43e to close the vertical opening 65b. The entire cleaning port 65 can be closed. In the state where the cleaning port 65 is closed, the upper and lower tongue pieces 67 of the bottom cover 66a sandwich the bottom 43b, and the bottom cover 66a engages the bottom 43b. By attaching the fixture 68 to the fixture fastening portion 70 of the vertical wall portion 43e, the closed lid 66 can be fixed to the case 43 by the fixture 68. In the present embodiment, the fixing tool 68 is constituted by a screw member that fastens the vertical lid portion 66b to the vertical wall portion 43e. As the fixing tool 68, various fixing members such as a lock pin such as a beta pin can be employed.

[Another embodiment]
(1) In the above-described embodiment, an example in which a shape that bends into one S-shape is adopted as the hose shape that forms the deformation absorbing portion of the supply hose and the discharge hose is shown. It is possible to adopt a bent shape, an S-shaped crank, or a string-wound spring shape having an axis in the direction along the swing axis of the oil cooling device 51.

(2) As a substantially straight line shape that does not bend into an S shape of the supply hose and the discharge hose, a loosely curved shape or a slightly bent shape can be adopted.

(3) Although the example which provided the oil cooling equipment 51 and 52 was shown in the above-mentioned Example, you may implement not only an oil cooling equipment but various cooling equipments, such as a capacitor | condenser of an air conditioner.

(4) In the above-described embodiment, the two cooling devices 51 and 52 are provided, and the discharge hose and the supply hose of the cooling device near the hinge member are extended toward the hinge member with the S-shaped deformation absorbing portion. In the example, the discharge hose and the supply hose of the cooling device near the free end side are extended toward the hinge member in a substantially straight shape that does not bend in an S shape, but only the cooling device near the hinge member is shown. The discharge hose and the supply hose are provided with an S-shaped deformation absorbing portion and extend toward the hinge member, or only the cooling device closer to the free end is provided. However, it is also possible to adopt a configuration that extends toward the hinge member in a substantially straight line shape that does not bend in an S shape. Alternatively, a configuration may be adopted in which only one cooling device is provided and the discharge hose and the supply hose are substantially straight and extend toward the hinge member. A configuration may be adopted in which two cooling devices are provided in a state of being arranged in a direction orthogonal to the swing axis, and the discharge hose and the supply hose of both cooling devices are substantially straight and extend toward the hinge member. Moreover, not only two but three or more cooling devices are provided,
The discharge hose and supply hose of the cooling device near the hinge member extend toward the hinge member with the S-shaped deformation absorbing portion, and the discharge hose and supply hose of the cooling device closer to the free end than the cooling device You may employ | adopt the structure extended toward a hinge member by the substantially linear shape which does not curve in S shape.

(5) Although the example which provided the air cooling device 53 was shown in the above-mentioned Example, you may implement by providing the air cooling device which makes air different from engine combustion air the object of cooling.

(6) In the above-described embodiment, the example in which the oil cooling devices 51 and 52 are swingable around the swing axis X in the vertical direction of the fuselage located on the front side of the fuselage has been shown. It may be possible to swing around the swing axis center in the vertical direction of the machine body. Further, it may be swingable around the swing axis along the longitudinal direction of the machine body.

(7) In the above-described embodiment, an example in which the width of the oil cooling device is different when viewed in the direction orthogonal to the swing axis X is shown, but oil cooling devices having the same width may be employed. Moreover, the reverse arrangement | sequence which showed the example which supported the narrow oil cooling apparatus 51 in the site | part close | similar to the hinge member of the support member 54, and supported the large oil cooling apparatus 52 in the site | part near the free end side of the support member 54 was shown. It may be supported by.

(8) In the above-described embodiment, the example in which the support member 54 of the oil cooling devices 51 and 52 is supported by the radiator support member 38 is shown. However, the support member 54 may be supported by a dedicated support member or the engine bonnet 30 or the like. Good.

(9) In the above-described embodiment, the cleaning opening 65 is provided with the back opening 65c, but the back opening 65c is not provided, and only the bottom opening 65a and the vertical opening 65b are provided. Also good.

(10) In the above-described embodiment, the cleaning port 65 is provided at the corner between the bottom 43b and the rear vertical wall 43e. However, the cleaning port 65 is provided at the corner between the bottom 43b and the front vertical wall 43d. May be. Moreover, you may provide in the corner | angular part of front and back both sides.

(11) In the above-described embodiment, the crawler type traveling device 5 may be provided with a traveling device that includes a wheel or a combination of a wheel and a mini crawler.

  The present invention can be applied to various work vehicles such as a corn harvester that harvest crops, or various work vehicles such as a tractor and a transport vehicle.

35 Engine room 36 Radiator 37 Cooling fan 38 Radiator support member 41 Dust-proof case 41a Dust-proof ventilation part 43 Case 43b Bottom part 43d Peripheral part (front vertical wall part)
43e Vertical wall (rear vertical wall)
50 Locking tool 51 Cooling equipment (oil cooling equipment)
52 Cooling equipment (oil cooling equipment)
53 Air cooling device 54 Support member 55 Hinge member 56a Cooling device side hose 56b Device side hose 57a Cooling device side hose 57b Device side hose 58 Pipe material 59 Pipe material 65 Cleaning port 65a Bottom opening portion 65b Vertical opening portion 66 Cover body 66a Bottom Lid 66b Vertical lid D Interval X Swing axis

Claims (8)

An engine room that houses a radiator for cooling the engine, and a cooling fan that is disposed on the center side of the radiator body, draws outside air from the outside of the radiator body, and supplies cooling air to the radiator.
A dust-proof case that has a dust-proof ventilation section that allows ventilation and prevents the passage of dust, and is disposed outside the radiator body in a state of covering the outside of the engine room body;
An air-cooled cooling device located between the dust-proof ventilation part and the radiator,
The dust-proof case can be changed between a closed state that covers the outer side of the engine room body and an open state that opens the outer side of the engine room body,
A support member that supports the cooling device is connected to a member on the engine room side via a hinge member, and the cooling device, together with the support member, has a normal posture facing the radiator, and an open posture that is separated from the radiator. Can swing over
The supply hose and the discharge hose connected to the cooling device are configured by a flexible member and extended from the cooling device toward the hinge member ,
The cooling device is supported by a portion of the support member near the hinge member,
The supply hose and the discharge hose are provided with a deformation absorbing portion formed in a shape that is bent in an S shape when viewed from the outside of the machine body, and the swinging operation of the cooling device is performed by the deformation absorbing portion. A work vehicle in which deformation of the supply hose and the discharge hose based on the above is absorbed . An engine room that houses a radiator for cooling the engine, and a cooling fan that is disposed on the center side of the radiator body, draws outside air from the outside of the radiator body, and supplies cooling air to the radiator.
A dust-proof case that has a dust-proof ventilation section that allows ventilation and prevents the passage of dust, and is disposed outside the radiator body in a state of covering the outside of the engine room body;
An air-cooled cooling device located between the dust-proof ventilation part and the radiator,
The dust-proof case can be changed between a closed state that covers the outer side of the engine room body and an open state that opens the outer side of the engine room body,
A support member that supports the cooling device is connected to a member on the engine room side via a hinge member, and the cooling device, together with the support member, has a normal posture facing the radiator, and an open posture that is separated from the radiator. Can swing over
The supply hose and the discharge hose connected to the cooling device are configured by a flexible member and extended from the cooling device toward the hinge member,
A plurality of the cooling devices are supported on the support member,
A plurality of the cooling devices are distributed and arranged in a portion near the hinge member and a portion near the free end side of the support member,
A deformation absorbing portion formed in a shape that cranks in an S shape when viewed from the outside of the fuselage at the portion near the hinge member in the supply hose and the discharge hose for the cooling device supported by the portion near the hinge member. The deformation absorbing portion absorbs the deformation of the supply hose and the discharge hose based on the swing operation of the cooling device,
The supply hose and the discharge hose for the cooling device supported by the portion closer to the free end side are substantially straight lines that do not bend in an S shape between the cooling device and the hinge member when viewed from the outside of the machine body. work vehicles that have been extended to Jo. In the direction along the swing axis of the cooling device, the width of the cooling device supported by the portion closer to the free end side is larger than the width of the cooling device supported by the portion closer to the hinge member. ,
The supply hose and the discharge hose for the cooling device supported by the portion closer to the free end side are provided at intervals in a direction along the swing axis,
The cooling device supported by the portion close to the hinge member is provided in a state of being located within the interval as seen from the outside of the fuselage ,
The operation according to claim 2 , wherein the supply hose and the discharge hose for the cooling device supported by a portion near the hinge member are extended toward the hinge member within the interval as viewed from the outside of the machine body. car. An engine room that houses a radiator for cooling the engine, and a cooling fan that is disposed on the center side of the radiator body, draws outside air from the outside of the radiator body, and supplies cooling air to the radiator.
A dust-proof case that has a dust-proof ventilation section that allows ventilation and prevents the passage of dust, and is disposed outside the radiator body in a state of covering the outside of the engine room body;
An air-cooled cooling device located between the dust-proof ventilation part and the radiator,
The dust-proof case can be changed between a closed state that covers the outer side of the engine room body and an open state that opens the outer side of the engine room body,
A support member that supports the cooling device is connected to a member on the engine room side via a hinge member, and the cooling device, together with the support member, has a normal posture facing the radiator, and an open posture that is separated from the radiator. Can swing over
The supply hose and the discharge hose connected to the cooling device are configured by a flexible member and extended from the cooling device toward the hinge member,
The cooling device is an oil cooling device,
An air cooling device supported by a radiator supporting member that supports the radiator in a state of being located outside the airframe of the cooling device;
The cooling device can only swingably der Ru working vehicle in a state in which the air cooling device is removed from the radiator support member. The work vehicle according to any one of claims 1 to 4 , wherein the cooling device is capable of swinging around a swing axis along a vertical direction of the machine body. A frame-shaped radiator supporting member for supporting the radiator is provided;
The support member is configured in a frame shape, and is connected to the radiator support member by the hinge member,
The work vehicle according to any one of claims 1 to 5 , further comprising a lock that can fix a free end side portion of the support member to the radiator support member. An engine room that houses a radiator for cooling the engine, and a cooling fan that is disposed on the center side of the radiator body, draws outside air from the outside of the radiator body, and supplies cooling air to the radiator.
A dust-proof case that has a dust-proof ventilation section that allows ventilation and prevents the passage of dust, and is disposed outside the radiator body in a state of covering the outside of the engine room body;
An air-cooled cooling device located between the dust-proof ventilation part and the radiator,
The dust-proof case can be changed between a closed state that covers the outer side of the engine room body and an open state that opens the outer side of the engine room body,
A support member that supports the cooling device is connected to a member on the engine room side via a hinge member, and the cooling device, together with the support member, has a normal posture facing the radiator, and an open posture that is separated from the radiator. Can swing over
The supply hose and the discharge hose connected to the cooling device are configured by a flexible member and extended from the cooling device toward the hinge member,
It is disposed between the engine room and the dust-proof case, and includes a case that houses the cooling device and the support member.
A cleaning port is opened at the corner between the bottom and the vertical wall of the case,
A lid that is detachable from the case and capable of closing the cleaning port;
Of the cleaning port, a bottom cover portion that closes a bottom opening portion that is open to the bottom portion, and a vertical lid that closes a vertical opening portion that is open to the vertical wall portion of the cleaning port. And,
The bottom lid is configured to engage the bottom by insertion along the extending direction of the bottom;
The longitudinal lid, work vehicles that is adapted to be secured abutting on the outer surface of the vertical wall portion. A plurality of pipe materials are supported on the periphery of the case in a state of penetrating into and out of the case,
From the pipe material, the supply hose and the discharge hose are connected to an end portion on the inner side of the case, and the other end portion of the pipe material is a device to be cooled by the cooling device. The work vehicle according to claim 7, wherein the apparatus-side supply hose and the apparatus-side discharge hose are connected .

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