JP2018121570A - Work vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a work vehicle in which work such as inspection and replacement of engine cooling water is facilitated.SOLUTION: The work vehicle comprises: a radiator 27 which is supported by a machine body frame 14, and circulates engine cooling water; and a drain hose 36 which is connected to a drain part 35 of the radiator 27. An opening 38 allowing the drain hose 36 to pass through the opening 38 is formed in a bottom member 37 positioned in a lower position than the lower end of the radiator 27 out of the machine body frame 14, a lid member 39 opening/closing the opening 38 is provided in a the bottom member 37 attachably and detachably from below, and a part at an exhaust port 42 side of the drain hose 36 is supported by the lid member 39.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a work vehicle.

  A conventional work vehicle is described in Patent Document 1, for example. The work vehicle described in this document is provided with a radiator that is supported by a body frame and circulates engine cooling water.

Japanese Patent Laying-Open No. 2006-168023

  By the way, the engine cooling water needs to be periodically replaced because the cooling performance deteriorates after a certain amount of use. However, in the conventional work vehicle as described above, the drainage portion of the radiator that can discharge the engine coolant is located at a location that is difficult to access. For this reason, in order to discharge engine cooling water from the radiator, it is necessary to remove peripheral devices of the radiator, and as a result, operations such as inspection and replacement of engine cooling water have become complicated.

  In view of the above circumstances, there has been a demand for a work vehicle that facilitates operations such as inspection and replacement of engine cooling water.

The work vehicle of the present invention is
A radiator that is supported by the fuselage frame and circulates engine coolant,
A drainage hose connected to the drainage part of the radiator,
In the body frame, an opening through which the drainage hose can pass is formed in a bottom member located at a position lower than a lower end portion of the radiator,
A lid member capable of opening and closing the opening is provided on the bottom member in a detachable state from below.
The drain hose side portion of the drain hose is supported by the lid member.

According to the present invention, the drainage hose is connected to the drainage portion of the radiator, and the engine cooling water can be discharged through the drainage hose. The drain hose side portion of the drain hose is supported by a lid member attached to an opening formed in the bottom member of the machine body frame. The lid member can be easily removed by operating from the lower side through an empty space formed below the bottom member. By removing the lid member, the portion on the drain outlet side of the drainage hose can be pulled out together with the lid member to a place where the work can be easily performed. And since the part at the side of the drain outlet of a drainage hose exists in a position lower than the lower end part of a radiator, the inside of a drainage hose can be made to flow naturally and engine cooling water can be discharged smoothly. Therefore, the engine cooling water can be easily discharged from the radiator without taking the trouble of removing the peripheral devices of the radiator.
Therefore, according to the present invention, it becomes easy to perform work such as inspection and replacement of engine cooling water.

In the present invention,
It is preferable that the opening is formed in a portion of the bottom member that is closer to the outside of the machine body.

  According to this configuration, the lid member can be easily attached to and detached from the opening from the outside of the machine body, and the drain hose side portion of the drainage hose supported by the lid member can be easily pulled out to a place where the work on the outside of the machine body can be easily performed.

In the present invention,
It is preferable that the opening is located directly below the radiator.

  According to this configuration, since the distance between the drainage portion of the radiator and the drainage hose side of the drainage hose is reduced, the length of the drainage hose can be kept short and a compact structure can be achieved.

In the present invention,
A through hole is formed in the lid member, and the drain hose side portion of the drain hose is connected to the through hole from above,
It is preferable that a plug member capable of closing the drain port side portion of the drain hose from the lower side of the through hole is provided.

  According to this configuration, both the attaching / detaching operation of the lid member to the opening and the opening / closing operation of the plug member to the drain hose side portion of the drain hose are performed from the lower side, so that the operation can be performed in a small space. It becomes.

It is a right view which shows the whole work vehicle. It is a right view which shows the structure of the periphery of a drive part and the periphery of a support stand. It is a bottom view which shows attachment / detachment of a cover member, the change of the state of a drainage hose, etc. It is a front view which shows attachment / detachment of a cover member, the change of the state of a drainage hose, etc. It is a top view which shows the removal of an engine control apparatus, the change of the state of a support stand, etc. It is a right view which shows removal of an engine control apparatus, the change of the state of a support stand, the drawer | drawing-out of a battery, etc.

  Hereinafter, an embodiment which is an example of the present invention will be described with reference to the drawings. In the drawing, the arrow F indicates “front”, the arrow B indicates “rear”, the arrow L indicates “left”, and the arrow R indicates “right”.

  As shown in FIG. 1, a self-removing combine (an example of a “work vehicle”) includes a traveling machine body that is self-propelled by a pair of left and right crawler traveling devices 1. The front part of the traveling machine body is provided with a cutting part 2 for cutting the planted cereal. An operation unit 4 covered with a cabin 3 is provided on the right side of the front and rear center part of the traveling machine body. In the rear part of the traveling machine body, a threshing device 5 for threshing the harvested cereal harvested by the reaping part 2 and a grain tank 6 for storing the grain obtained by the threshing process are provided side by side. Yes. A driving unit 8 is provided below the driving seat 7 in the driving unit 4 of the traveling machine body. The traveling machine body is provided with an unloader 9 that can discharge the grain stored in the grain tank 6 to the outside of the machine.

  In the cutting part 2 shown in FIG. 1, a weeding tool 10 for weeding the planted grain culm stock to be harvested, a plurality of triggering devices 11 for causing the planted cereal culm in a vertical position, A clipper-type harvesting device 12 that cuts the planted grain culm that has been caused, a vertical conveying device 13 that conveys the harvested corn straw backward while changing its posture so that it gradually falls from the vertical posture. Is provided.

  The whole cutting part 2 is supported by the cutting frame 15 extended from the body frame 14 assembled in a frame shape. The mowing frame 15 is moved up and down by a telescopic operation of an elevating cylinder (not shown) into a descending work state in which the weeding tool 10 is lowered near the ground and an ascending non-working state in which the weeding tool 10 is raised from the ground. it can.

  By moving the traveling machine body with the mowing unit 2 in the descending work state, the mowing unit 2 introduces and raises the planted cereal to be harvested by the weeding tool 10 to the rear raising device 11. The planted culm that is caused to be processed is reaped by the clipper-shaped reaper 12, and the reaped cereal is conveyed rearward by the vertical conveying device 13 and supplied to the threshing feed chain (not shown) of the threshing device 5.

  The threshing apparatus 5 shown in FIG. 1 performs the threshing process by supplying the tip side to the handling room while sandwiching and transporting the stock source side of the supplied harvested cereal rice bran by the threshing feed chain. The processed product after being threshed in the handling room is sorted into grains and sawdust by a sorting section (not shown) below the handling room, and the grains are lifted by a lifting device (not shown). And conveyed to the inside of the grain tank 6. The grain tank 6 stores the grain fed from the threshing device 5. The grain stored in the grain tank 6 is discharged to the outside by the unloader 9.

  As shown in FIG. 1, the driver's seat 7 is supported by an upper part of an engine bonnet 20 that covers an upper part of a diesel-type engine 19 provided in the prime mover 8. The operating unit 4 is supported by the body frame 14 integrally with the engine bonnet 20 so as to be swingable and openable around the vertical axis on the left rear side.

  As shown in FIGS. 1 and 2, the operation unit structure 21 is provided with a floor frame body 22 that constitutes a floor portion of the operation unit 4, and a lower side of a place on the boarding / exiting portion side of the floor frame body 22. Is provided with a boarding step 23 for the driver to board.

  As shown in FIG. 1, a pre-cleaner 24 is provided near the back of the ceiling of the cabin 3 so as to be supported by the ceiling. An air cleaner 25 is provided in the air supply chamber component formed behind the driver seat 7. A supercharger is provided in the vicinity of the front side of the fuselage at the top of the engine 19 inside the engine bonnet 20.

  As shown in FIGS. 1 and 2, the supercharger is driven by exhaust gas discharged from the engine 19, the external air is removed by the precleaner 24 and the air cleaner 25, and the air after dust removal is sucked into the supercharger. Compressed air is generated, and this compressed air is sent to the intercooler 28 for cooling treatment, and the compressed air after cooling is supplied to the engine 19 as combustion air.

  As shown in FIGS. 1-4, the radiator 27 which is supported by the body frame 14 and circulates engine cooling water is provided. The radiator 27 is disposed at a location on the outer right side of the body. Between the intake wall 26 and the radiator 27, a hydraulic oil such as a first oil cooler 29 for cooling the hydraulic oil supplied to the hydraulic continuously variable transmission (HST), a hydraulic clutch (not shown) provided in the transmission case, and the like. A second oil cooler 30 is provided for cooling the hydraulic oil supplied to the apparatus. An oil filter 31 is provided between the intake wall 26 and the radiator 27 so as to be adjacent to the front side of the second oil cooler 30 and interposed in the hydraulic oil passage for the second oil cooler 30. The intercooler 28 is provided between the intake wall 26 and the radiator 27 that prevent the passage of dust while allowing the air inside the engine bonnet 20 to pass.

  As shown in FIG. 2, a radiator 27, a first oil cooler 29, a second oil cooler 30, and an intercooler 28 are located inside the airframe of the intake wall 26. The suction wall 26 can swing around the rear longitudinal axis Z to open the right side surface of the prime mover 8.

  As shown in FIGS. 1 and 2, air is taken in from the outside through the intake wall 26 by driving a cooling fan 32 arranged between the engine 19 and the radiator 27, and the radiator 27, the second The first oil cooler 29, the second oil cooler 30, and the intercooler 28 are cooled.

  Although not described in detail, the prime mover 8 includes the first exhaust gas treatment device that reduces the particulate matter contained in the exhaust gas of the engine 19 and the exhaust gas after being processed by the first exhaust gas treatment device. And a second exhaust gas treatment device that reduces nitrogen oxides.

  The second exhaust gas treatment device is an exhaust treatment device using selective catalytic reduction (SCR), which is a known technique. In the second exhaust gas treatment device, urea water, which is an example of a reducing agent, is injected into the exhaust gas to be hydrolyzed to generate ammonia, and the ammonia (NH 3) and nitrogen oxides (NOx) contained in the exhaust gas are chemically treated. The exhaust gas is purified so as to reduce nitrogen oxides contained in the exhaust from the engine 19 by reacting and reducing to nitrogen (N2) and water (H2O).

  As shown in FIGS. 1, 2, 5, and 6, the second exhaust gas treatment apparatus is provided with a urea water tank 34 for storing urea water on the front side of the body from the engine 19. The urea water tank 34 is supported by the body frame 14 in a state of being located on the lower side of the floor portion of the operation unit 4.

[Regarding the structure around the drainage section of the radiator]
As shown in FIGS. 3 and 4, a drainage portion 35 that can discharge engine cooling water in the radiator 27 is provided inside the machine body at a location near the lower end portion of the radiator 27. A drainage hose 36 having flexibility is connected to the drainage part 35. The drainage section 35 is provided with a manually operated drain cock 35A. When the drain cock 35A is closed, the radiator 27 and the drain hose 36 are in a non-conductive state. When the drain cock 35A is opened, the radiator 27 and the drain hose 36 are in a conductive state, and the engine cooling water flows into the drain hose 36.

  As shown in FIGS. 3 and 4, an opening 38 through which the drainage hose 36 can pass is formed in a bottom member 37 located at a position lower than the lower end portion of the radiator 27 in the body frame 14. A lid member 39 that can open and close the opening 38 is provided on the lower surface side of the opening 38. The lid member 39 is provided on the bottom member 37 in a detachable state from below. The lid member 39 is a rectangular plate. Folded portions 40 are provided at the rear end portion and the right end portion of the lid member 39, respectively.

  As shown in FIGS. 3 and 4, the lid member 39 can be switched between an attachment state A1 and a removal state A2 by a plurality of fasteners 41 such as bolts. The lid member 39 in the attachment state A1 is fastened and fixed to the bottom member 37 by each fastener 41. The operation part of each fastener 41 is located on the lower surface side of the lid member 39.

  As shown in FIGS. 3 and 4, the opening 38 is formed in the bottom member 37 at a location near the outside of the machine body. The opening 38 is located directly below the radiator 27. The opening 38 and the lid member 39 of the bottom member 37 are located above the left crawler traveling device 1.

  As shown in FIGS. 3 and 4, the adapter 43, which is a portion of the drain hose 36 on the drain outlet 42 side, is supported by the lid member 39. The adapter 43 is a cylindrical member bent into an L shape. The adapter 43 is made of metal or resin. The drainage hose 36 is fastened and fixed from the outside of the drainage hose 36 to the adapter 43 by a fastening member 44 formed of a metal cord or the like.

  As shown in FIGS. 3 and 4, a through hole 45 is formed in the lid member 39. An adapter 43 that is a portion of the drainage hose 36 on the drainage port 42 side is connected to the through hole 45 from above. On the lower surface side of the lid member 39, a plug member 46 capable of closing the adapter 43, which is a portion on the drain port 42 side of the drain hose 36, from below the through hole 45 is provided. The plug member 46 is constituted by, for example, a drain plug. The plug member 46 is made of metal. The operation portion of the plug member 46 is located on the lower surface side of the lid member 39.

  The tip part of the adapter 43 (the part where the plug member 46 is located) connected to the drainage hose 36 shown in FIGS. 2 to 4 and the like is located on the lateral outer side (right side of the body) of the crawler traveling device 1. It is possible to pull out all the way. Thereby, when the plug member 46 is opened (removed), it is possible to avoid the engine cooling water from being applied to the crawler belt of the crawler traveling device 1.

[About engine cooling water discharge]
As shown in FIGS. 3 and 4, first, the plurality of fasteners 41 are operated and removed from the lower side of the bottom member 37. As a result, the lid member 39 can be removed from the opening 38 of the bottom member 37 into the state A2.

  Next, the drain cock 35 A of the drain section 35 exposed downward is accessed through the opening 38, the drain cock 35 A is opened, and the engine cooling water flows into the drain hose 36 from the radiator 27. At the same time, together with the lid member 39, the drainage hose 36 and the adapter 43 are pulled out through the opening 38 to the outside of the machine body. The adapter 43, which is the portion of the drain hose 36 on the drain outlet 42 side, can be pulled out to the outer side of the machine body from the left crawler traveling device 1.

  Next, from the lower side of the lid member 39, the plug member 46 closing the tip of the adapter 43 is operated to open. Thereby, the engine cooling water in the radiator 27 can be smoothly discharged through the drainage part 35, the drainage hose 36, and the adapter 43 at a location on the lateral outer side of the left crawler traveling device 1. As shown in FIG. 2, the new engine coolant can be supplied into the radiator 27 from the supply port 48 by removing the cap 47 located near the upper end of the radiator 27.

  Thus, since engine cooling water can be discharged from the radiator 27 without removing peripheral devices of the radiator 27, operations such as inspection and replacement of engine cooling water are facilitated.

[About support stand]
As shown in FIGS. 1, 2, 5, and 6, a battery 50 is provided on the front side of the machine body from the urea water tank 34. A first support frame 51 and a second support frame 52 that are formed in a substantially reverse U-shape in a front view of the body so as to bypass the urea water tank 34 and the battery 50 are extended from the body frame 14. The first support frame 51 and the second support frame 52 are arranged side by side on the lower side of the operating unit 4.

  As shown in FIGS. 1, 2, 5, and 6, the battery 50 is supported by a support base 53 that is supported by the front end portion of the body frame 14. The support base 53 is connected to a mounting portion 54 on which the battery 50 is mounted, and an engine control device 55 (engine ECU) that controls the engine 19 and is connected to and supported by the rear end portion of the mounting portion 54. And a folding portion 56. The folding portion 56 is connected to the placement portion 54 so as to be swingable about the horizontal axis X along the left-right direction.

  As shown in FIGS. 5 and 6, the support base 53 has a folded state B <b> 1 in which the folding portion 56 is erected from the rear end portion of the mounting portion 54, and the folding portion 56 is rearward from the rear end portion of the mounting portion 54. The state can be switched between the unfolded state B <b> 2 extending in the direction of. At normal times, the support base 53 is in the folded state B1, and when the maintenance is performed on the battery 50 and the like, the support base 53 is set in the unfolded state B2.

  As shown in FIGS. 2, 5, 6, and the like, the support base 53 in the folded state B <b> 1 has an engine control device 55 attached to and supported by the rear end portion of the folding portion 56. The folding portion 56 of the support base 53 is also used as a support member for the engine control device 55. The folding part 56 of the support base 53 in the folded state B <b> 1 covers a part of the rear surface of the battery 50.

  As shown in FIGS. 5 and 6, the engine control device 55 is accommodated in a box-like accommodation case 57. The housing case 57 is connected to the first support frame 51 by a first connector 60 via an angled first stay 58 and a second stay 59 on the left side surface. The right portion of the housing case 57 is connected to the first support frame 51 by a second connector 62 via an angle-shaped third stay 61. The rear portion of the housing case 57 is connected to the folded portion 56 by a third connector 64 via an angle-shaped fourth stay 63. The support base 53 is locked to the second support frame 52 in the folded state B1 by the connection of the first connector 60, the second connector 62, and the third connector 64.

  As shown in FIG. 5, FIG. 6, etc., the first control tool 60, the second connection tool 62, and the third connection tool 64 are released, whereby the engine control device 55 is folded together with the housing case 57. The support base 53 is unlocked and the support base 53 can be changed from the folded state B1 to the unfolded state B2.

  Then, by removing the positioning member 65 for positioning located above the battery 50 shown in FIG. 5, FIG. 6, etc., the battery 50 is folded from the upper surface of the mounting portion 54 in the support base 53 in the unfolded state B2. The upper surface of 56 can be slid and pulled back.

  In this way, by using the support base 53 as the support member of the engine control device 55 and the support member of the battery 50, the structure can be simplified. Since the support base 53 can be changed from the folded state B1 to the expanded state B2, maintenance such as replacement of the battery 50 can be easily performed.

[Another embodiment]
Hereinafter, another embodiment in which a part of the above embodiment is changed will be exemplified. The above-described embodiment and each of the separate embodiments can be selected and combined as long as no contradiction occurs. The scope of the present invention is not limited to the contents of each embodiment.

(1) In the above-described embodiment, the opening 38 is illustrated as being located directly below the radiator 27, but is not limited thereto. For example, the opening 38 may be located at a location deviating from directly below the radiator 27.

(2) In the above-described embodiment, the opening 38 is illustrated as being formed at a position closer to the right outer side of the aircraft, but is not limited thereto. The position of the opening 38 may be a place close to the place where the radiator 27 is disposed. For example, if the location where the radiator 27 is disposed is a location closer to the left outer side of the aircraft, the opening 38 is preferably formed at a location closer to the outer left side of the aircraft.

(3) In the above embodiment, the adapter 43 is illustrated as being supported through the through hole 45 of the lid member 39, but the present invention is not limited to this. For example, the adapter 43 may simply be attached and supported on the surface of the lid member 39 without penetrating the lid member 39.

(4) In the above embodiment, the adapter 43, which is a cylindrical member bent in an L shape, is illustrated on the drain port 42 side of the drain hose 36. However, the present invention is not limited to this. . For example, the end surface of the drain port 42 of the drain hose 36 may be fixed to the through hole 45 without the adapter 43 being interposed.

(5) In the above embodiment, the operation member of the plug member 46 is illustrated on the lower surface side of the lid member 39, but the present invention is not limited to this. For example, the operation portion of the plug member 46 may be located on the upper surface side of the lid member 39.

  INDUSTRIAL APPLICABILITY The present invention can be used for various work vehicles such as ordinary combine harvesters, corn harvesters and the like in addition to the above-described self-removing combine harvesters.

14: Airframe frame 27: Radiator 35: Drainage part 36: Drainage hose 37: Bottom member 38: Opening 39: Lid member 42: Drainage port 45: Through hole 46: Plug member

Claims (4)

A radiator that is supported by the fuselage frame and circulates engine coolant,
A drainage hose connected to the drainage part of the radiator,
In the body frame, an opening through which the drainage hose can pass is formed in a bottom member located at a position lower than a lower end portion of the radiator,
A lid member capable of opening and closing the opening is provided on the bottom member in a detachable state from below.
A work vehicle in which a drain port side portion of the drain hose is supported by the lid member.   The work vehicle according to claim 1, wherein the opening is formed in a position of the bottom member that is closer to the outside of the machine body.   The work vehicle according to claim 1, wherein the opening is located immediately below the radiator. A through hole is formed in the lid member, and the drain hose side portion of the drain hose is connected to the through hole from above,
The work vehicle as described in any one of Claim 1 to 3 with which the plug member which can block | close the part by the side of the drain outlet of the said drain hose from the lower side of the said through-hole is provided.