JP6877259B2 - Harvester - Google Patents

Description

The present invention relates to an engine mounted on a traveling machine and a harvester provided with an exhaust gas purifying device connected to the engine and purifying the exhaust gas of the engine with a reducing agent.

In the above-mentioned harvester, the exhaust gas discharged from the engine is purified by a reducing agent in the exhaust gas purification device.
As a harvester of this kind, for example, there is a combine shown in Patent Document 1. This combine is provided with a second exhaust gas treatment device, and the second exhaust gas treatment device is configured to inject urea water into the exhaust gas from the engine to reduce nitrogen oxides in the exhaust gas. A urea water tank for storing urea water is provided below the floor of the operating unit.

Japanese Unexamined Patent Publication No. 2016-168975

When the conventional technique is adopted, the reducing agent tank is located in a recessed place, so when the reducing agent is replenished to the reducing agent tank, it is necessary to supply the reducing agent from the replenishment container to the reducing agent tank by a supply hose. In addition, it takes time and effort to lift the replenishment container and provide a head so that the reducing agent flows down from the replenishment container to the reducing agent tank.

The present invention provides a harvester capable of easily replenishing the reducing agent while compactly installing the reducing agent tank in the traveling machine body portion.

The harvester according to the present invention
An engine mounted on a traveling machine and an exhaust gas purifying device connected to the engine and purifying the exhaust gas of the engine with a reducing agent are provided.
A reducing agent tank for storing the reducing agent and a fuel tank for storing the fuel of the engine are provided on the outer peripheral portion of the traveling machine body, and the reducing agent tank is located above the fuel tank. ,
A mounting table is provided that can switch between a used state and a stored state in which a replenishing container for replenishing the reducing agent can be placed in the reducing agent tank by vertical swing.
The above-mentioned pedestal swings downward to enter the used state, swings upward to enter the stored state, and when switched to the used state, is located above the fuel filler port of the fuel tank and switches to the stored state. Then, it is located on the outer side of the reducing agent tank in a state of being adjacent to the reducing agent tank .

According to this configuration, the reducing agent tank can be installed by utilizing the empty space created above the fuel tank as the installation space of the reducing agent tank. Since the reducing agent tank is located on the outer peripheral portion of the traveling machine body, the replenishment container can be easily brought near the reducing agent tank. The replenishment container can be replenished from near the reducing agent tank while being supported by placing it on the mounting table.

When replenishing the reducing agent, the refueling port can be covered with a mounting table so that the spilled reducing agent does not fall into the refueling port of the fuel tank.

Therefore, the reducing agent can be quickly and easily replenished to the reducing agent tank while the reducing agent tank can be compactly installed on the traveling machine body by utilizing the space above the fuel tank as the installation space of the reducing agent tank. In order to prevent the reducing agent from falling on the fuel filler port, a mounting table can be used for the member covering the fuel filler port at a low cost.

According to this configuration, the mounting table can be easily used by simply swinging it up and down from the stored state, and can be easily stored by simply swinging it down and swinging from the state of use.

In the present invention, it is preferable that the outer peripheral portion is the rear portion of the traveling machine body, and the fuel filler port extends rearward from the fuel tank.

According to this configuration, it is easy to refuel the fuel tank from the rear of the traveling machine.

In the present invention, a drain portion is provided at the bottom of the reducing agent tank, which is provided below the reducing agent tank and allows the reducing agent flowing out of the drain portion to flow toward the outside of the traveling machine of the fuel tank. It is preferable that a gutter member for guiding the vehicle is provided.

According to this configuration, when the reducing agent is extracted from the drain portion of the reducing agent tank and recovered, the reducing agent discharged from the drain portion is guided by the gutter member to flow down to the outside of the traveling machine body of the fuel tank. Is easy to collect, as it does not interfere with the installation of the collection container.

In the present invention, it is preferable that the gutter member is supported by a support column member that supports the reducing agent tank.

According to this configuration, the gutter member can be firmly supported by a simple support structure in which a support member having high rigidity is used as the support member of the gutter member in order to support the reducing agent tank.

It is a right side view which shows the whole combine. It is a top view which shows the whole of the combine. It is a side view which shows the driving part, a fuel tank and a reducing agent tank. It is a rear view of a driving part. It is a left side surface which shows the 1st exhaust gas purification apparatus and the 2nd exhaust gas purification apparatus. It is a rear view which shows the installation part of the reducing agent tank. It is a perspective view of a mounting table. It is a top view which shows the support structure of a mounting table. It is sectional drawing of the support part which supports the mounting table in use state. It is sectional drawing of the support part which supports the mounting stand in a retracted state. It is a top view which shows the mounting table in a used state. It is a side view which shows the mounting table in a used state. It is a side view which shows the gutter member. It is a top view which shows the gutter member.

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

As shown in FIGS. 1 and 2, the combine includes a traveling machine body 1 equipped with a pair of left and right crawler traveling devices 2. The driving unit 3 is formed on the right side portion of the front portion of the traveling machine body 1. The driving unit 3 is covered by the cabin 4. A driving unit 5 is formed below the driving unit 3. A threshing device 6 and a grain tank 7 are provided at the rear of the traveling machine 1. The threshing device 6 and the grain tank 7 are arranged in the lateral width direction of the traveling machine body 1 in a state where the grain tank 7 is located behind the operation unit 3. A waste straw shredding device 8 is provided at the rear of the threshing device 6. The cutting and transporting device 9 extends forward from a portion on the threshing device side in the front portion of the traveling machine body 1. The cutting transport device 9 is provided with a transport unit 10 extending forward from the traveling machine body 1 so as to be able to swing up and down, and a cutting unit 11 having a rear portion connected to the front end portion of the transport unit 10. .. The cutting unit 11 is moved up and down between the lowering work state and the ascending non-working state by swinging the conveying part 10.

In the combine, the harvesting work of rice, wheat, soybean, etc. can be performed by lowering the cutting unit 11 to the lowering work state and running the traveling machine 1 in this state. That is, in the cutting section 11, the tip side of the planted culm to be cut is scraped backward by the rotary reel 12, and the root side of the planted culm is cut by the reaping device 13 to cut the planted culm. Is done. The entire area from the root of the cut culm to the tip of the ear is transported backward by the auger 14 and the transport unit 10 and supplied to the threshing device 6. In the threshing apparatus 6, the cut grain culm is threshed by the handling cylinder 6a (see FIG. 2), and the threshed grains obtained by the threshing treatment are sorted as dust. The dust discharged from the threshing device 6 is guided by the dust discharge port cover 6b and discharged to the rear of the traveling machine body 1. The threshing straw is shredded by the straw shredding device 8. The shredded straw is guided by the discharge port cover 8a provided in the lower part of the waste straw shredding device 8 and discharged to the rear of the traveling machine body 1. The threshed grains after the sorting process are supplied to the grain tank 7 by the grain raising device 17 and stored. The threshed grains stored in the grain tank 7 are taken out from the grain tank 7 by a bottom screw 15 (see FIG. 1) and a grain discharging device 16 having a start end communicating with the end of the bottom screw 15. It can be taken out from the grain tank 7.

[Structure of driving unit 5]
As shown in FIGS. 3 and 4, the driving unit 5 is provided with an engine room 20. The engine room 20 is formed by an engine bonnet 21 and a dustproof case 22 (see FIG. 1). The engine bonnet 21 is provided with a seat support function that supports the driver's seat 3a on the top plate. The dustproof case 22 is provided on the lateral outer side of the engine bonnet 21. The dustproof case 22 can be swung open and closed.

The engine room 20 is provided with an engine 23, a radiator 24 for cooling the engine, a cooling fan 25, a first exhaust gas purification device 26, and a second exhaust gas purification device 27.

The engine 23 is mounted on the machine frame 1a of the traveling machine 1 in a mounting posture in which the output shaft extends in the lateral width direction of the traveling machine 1. The radiator 24 is provided on the dustproof case 22 side of the engine 23. The cooling fan 25 is rotationally driven by the engine 23 between the engine 23 and the radiator 24, sucks the cooling air from the outside to the inside of the engine room 20 through the dustproof case 22, and supplies the sucked cooling air to the radiator 24. To do.

As shown in FIGS. 4 and 5, the first exhaust gas purification device 26 is provided on the lateral side of the engine 23 opposite to the radiator side, and is provided on the lateral side of the engine 23 via the first support member 28. It is supported. A first suction port portion 26a is formed on the front lateral side portion of the first exhaust gas purification device 26. A first discharge port portion 26b is formed in the upper rear portion of the first exhaust gas purification device 26. The first exhaust gas purification device 26 is connected to the exhaust portion of the engine 23 by the first suction port portion 26a.

As shown in FIGS. 3, 4 and 5, the second exhaust gas purification device 27 is provided above the side of the engine 23 opposite to the radiator side, and is supported on the upper part of the engine 23 via the second support member 29. ing. A second suction port portion 27a is formed in the front portion of the second exhaust gas purification device 27.
A second discharge port 27b is formed in the upper rear part of the second exhaust gas purification device 27. The second suction port portion 27a and the first discharge port portion 26b are connected by a connecting pipe 30, and the second exhaust gas purifying device 27 connects the exhaust portion of the engine 23 via the connecting pipe 30 and the first exhaust gas purifying device 26. It is connected to the. An exhaust pipe 31 extends from the second discharge port portion 27b to the rear side of the roof portion in the cabin 4. The exhaust pipe 31 is covered with an exhaust pipe cover 32. As shown in FIG. 4, the laterally inner portion of the body of the first exhaust gas purification device 26 and the laterally inner portion of the body of the connecting pipe 30 project from the engine room 20 toward the threshing device. The lateral inner portion of the body of the first exhaust gas purification device 26 and the lateral inner portion of the connecting pipe 30 are covered with the cover 33.

In the first exhaust gas purification device 26, the exhaust gas discharged from the engine 23 is sucked into the device through the first suction port portion 26a. The inhaled exhaust gas undergoes a purification treatment in which diesel particulates in the exhaust gas are collected by a collection filter (not shown), and is treated into purified exhaust gas in which particulate matter is reduced. The purified exhaust gas is discharged from the first discharge port portion 26b.

In the second exhaust gas purification device 27, the purified gas discharged from the engine 23 and purified by the first exhaust gas purification device 26 is sucked into the device through the connection pipe 30 and the second suction port portion 27a. .. The inhaled purified exhaust gas is purified into purified exhaust gas in which nitrogen oxides are reduced by urea water, which is an example of a reducing agent. That is, it is contained in the exhaust gas by injecting urea water into the exhaust gas and hydrolyzing it to generate ammonia, and chemically reacting the ammonia with the nitrogen oxides contained in the exhaust gas to reduce them to nitrogen and water. Reduce nitrogen oxides. The purified exhaust gas with reduced nitrogen oxides is discharged from the second discharge port 27b to the exhaust pipe 31, and is discharged from the exhaust port 31a (see FIG. 4) of the exhaust pipe 31 to the threshing device side through above the grain raising device 17. ..

[About the fuel tank 35 and the reducing agent tank 36]
As shown in Figs. The fuel tank 35 and the reducing agent tank 36 are arranged in the vertical direction of the traveling machine body 1 with the reducing agent tank 36 located above the fuel tank 35. The fuel tank 35 is configured to store fuel for the engine. The fuel stored in the fuel tank 35 is supplied to the engine 23 by a fuel pump (not shown). The reducing agent tank 36 is configured to store urea water. The urea water stored in the reducing agent tank 36 is supplied to the second exhaust gas purification device 27 by the supply hose 37 and the urea water pump 38.

The fuel tank 35 is placed on a tank receiving portion 39 formed at the rear portion of the fuselage frame 1a, and is pressed from above by a tightening band 40 and fixed to the tank receiving portion 39. The tank receiving portion 39 is configured in the shape of a saucer. A refueling cylinder 41 extends rearward from the rear of the fuel tank 35. A refueling port 35a of the fuel tank 35 is formed at the extending end of the refueling cylinder 41. The fuel filler port 35a is provided with a fuel filler port cap 42.

As shown in FIGS. 3 and 6, the reducing agent tank 36 is placed on the tank base 43 and fixed to the tank base 43 by the pressing plate 44 and the tightening rod 45. As shown in FIG. 11, the lateral width of the tank base 43 at the front portion is narrower than the lateral width at the rear portion. A urea water supply port 36a is formed at the rear of the reducing agent tank 36. The urea water supply port 36a is provided with a supply port cap 46.

The tank base 43 is supported by the left rear strut member 47, the right rear strut member 48, and the front strut member 49. The front strut member 49 is erected on the machine frame 1a on the front side of the left rear strut member 47 and the right rear strut member 48, and is connected to the front portion of the tank base 43. The left rear support column member 47 is erected on the rear horizontal frame portion 1b extending in the lateral width direction of the traveling machine body 1 in the machine body frame 1a, and is connected to the left rear portion of the tank base 43. The right rear support column member 48 is erected on the rear horizontal frame portion 1b and is connected to the right rear portion of the tank base 43. As shown in FIG. 8, the rear right support column member 48 is connected to the support portion 57 of the tank base 43 via the connecting member 48a. The reducing agent tank 36 is supported by the machine frame 1a via the tank base 43, the rear strut member 47 on the left, the strut member 48 on the rear right, and the strut member 49 on the front.

The strut member 48 at the rear right is composed of a tank strut that rotatably supports the grain tank 7. The arm portion 50 extends laterally outward from the upper end portion of the tank column. The holding member 51 is supported by the extending end of the arm portion 50. The holding member 51 rotatably holds the vertical screw portion 16a of the grain discharging device 16. The tank column (post member 48 at the rear right) rotatably supports the grain tank 7 via the arm portion 50, the holding member 51, and the vertical screw portion 16a. A reinforcing member 52 is connected to the upper end of the tank column and the threshing device 6. The reinforcing member 52 and the tank column are connected via a connecting member 52a. The end portion of the reinforcing member 52 and the arm portion 50 are connected via the connecting member 50a. The electric motor 53 shown in FIG. 6 rotates the gear portion 16b of the vertical screw portion 16a to rotate the grain discharge device 16.

[About mounting stand 55]
As shown in FIGS. 11 and 12, a mounting table 55 is provided on the rear side of the reducing agent tank 36.
As shown in FIG. 7, mounting portions 56 are provided on the left and right sides of the base portion of the mounting base 55. As shown in FIG. 8, support portions 57 are provided on both lateral sides of the rear portion of the tank base 43. The left mounting portion 56 of the mounting base 55 is supported by the left support portion 57 of the tank base 43 via the connecting pin 58, and the right mounting portion 56 of the mounting base 55 is connected to the right support portion 57 of the tank base 43. It is supported via a pin 58. The mounting base 55 is supported by the tank base 43 in a state where it can be swung up and down with the shaft core P extending in the width direction of the traveling machine body common to the left and right connecting pins 58 as a swing fulcrum, and can be used and stored. It can be switched.

As shown in FIGS. 11 and 12, the mounting base 55 is swung downward, and the left and right mounting portions 56 are located on the free end side of the mounting base from the connecting pin 58 of the mounting portions 56, as shown in FIG. When the portion of the above abuts on the bottom portion 57a of the support portion 57 and is received and supported, the mounting table 55 is put into use. When the mounting table 55 is in use, it is in a posture of extending horizontally or substantially horizontally from the tank base 43 and is supported by the connecting pin 58 and the bottom portion 57a in this posture, such as a replenishment tank. The replenishment container can be placed on the mounting table 55. The mounting table 55 is located above the fuel filler port 35a of the fuel tank 35 when it is in use.

As shown in FIGS. 8 and 13, when the mounting base 55 is swung to the ascending side and the mounting base 55 stands up against the support portion 57, as shown in FIG. 10, a long-hole shaped pin of the mounting portion 56 is formed. When the left and right mounting portions 56 are lowered with respect to the support portion 57 by using the through holes 59 as guide holes, the tip sides of the left and right mounting portions 56 enter the bottom hole 57b of the support portion 57, and the mounting portions 56 enter the connecting pin 58. And, it is supported by the peripheral portion of the bottom hole 57b of the support portion 57, and the mounting table 55 is in the retracted state. When the mounting table 55 is in the retracted state, the mounting table 55 is in an upright posture parallel to or substantially parallel to the rear wall portion of the reducing agent tank 36, and is supported by the peripheral portion of the connecting pin 58 and the bottom hole 57b in this upright posture. ..

When the reducing agent tank 36 is replenished with urea water, as shown in FIGS. 11 and 12, the swingable exterior cover 60 that covers the grain tank 7, the reducing agent tank 36 and the fuel tank 35 from the rear side is opened. .. When the rear side of the reducing agent tank 36 is opened, the mounting table 55 is switched to the used state, and the replenishment container is placed on the mounting table 55 from the rear. At this time, since the mounting table 55 is located above the refueling port 35a, the replenishment container can be placed on the mounting table 55 while being prevented by the mounting table 55 from hitting the refueling port 35a. Urea water can be replenished from the replenishment container to the reducing agent tank 36 while receiving the load of the replenishment container by the mounting table 55. At this time, since the mounting table 55 is located above the fuel filler port 35a, the mounting table 55 can prevent the urea water from falling into the fuel filler port 35a of the fuel tank 35 even if it spills. Since the guard member 61 projects upward from the rear end of the tank base 43, the guard member 61 can prevent the reinforcing container from hitting the reducing agent tank 36.

By switching the mounting table 55 to the retracted state during normal work or the like, the mounting table 55 can be retracted and stored inside the machine body from the used state.

[About the gutter member 63]
As shown in FIG. 13, a drain bolt 62 as a drain portion is provided at the bottom of the reducing agent tank 36. The drain bolt 62 projects below the tank base 43 through the through hole 64 of the tank base 43. The drain bolt 62 can be attached and detached from below the tank base 43 to open and close the drain hole.

As shown in FIGS. 13 and 14, a gutter member 63 is provided below the reducing agent tank 36.
The gutter member 63 extends rearward from the lower portion of the drain bolt 62 through the left lateral side of the refueling cylinder 41. The discharge port 63a of the gutter member 63 is located at a position on the rear side of the rear wall portion of the fuel tank 35. A bracket 65 is provided on the lower surface side of the tank base 43, and the drain bolt side portion of the gutter member 63 is supported by the bracket 65. A support portion 47a is provided on the left rear support column member 47 that supports the reducing agent tank 36, and an intermediate portion of the gutter member 63 is supported by the support portion 47a.

When the urea water is drained from the drain hole of the reducing agent tank 36, the urea water flowing out from the drain hole is guided by the gutter member 63 so as to flow down to the rear outside of the traveling machine body of the fuel tank 35. Even if the recovery container is installed behind the fuel tank 35, the urea water flowing out of the reducing agent tank 36 can be received in the recovery container and recovered.

[Another Embodiment]
(1) In the above embodiment, an example in which the reducing agent tank 36 and the fuel tank 35 are provided at the rear part of the traveling machine is shown, but if it is an outer peripheral part of the traveling machine such as a lateral side of the traveling machine, the outer periphery is shown. It may be provided in any part of the part and carried out.

(2) In the above-described embodiment, an example is shown in which the mounting table 55 is configured to switch between the used state and the stored state by swinging up and down, but it is configured to switch between the used state and the stored state by swinging left and right. May be carried out. Further, it may be configured to switch between a used state and a stored state by attachment / detachment.

(3) In the above-described embodiment, an example is shown in which the urea water is taken out from the drain portion of the reducing agent tank 36 by the gutter member 63, but it is configured to be taken out by the drain hose connected to the drain hole. You may.

(4) In the above-described embodiment, the gutter member 63 is supported by the support member 47 of the reducing agent tank 36, but a support member such as a dedicated support member may be provided.

The present invention can be applied to various harvesters such as a self-removing combine harvester, a corn harvester, a carrot harvester, and a radish harvester, in addition to a conventional combine harvester.

1 Traveling machine 23 Engine 27 Exhaust gas purification device 35 Fuel tank 35a Refueling port 36 Reducing agent tank 47 Strut member 62 Drain part 63 Gutter member

Claims (4)

An engine mounted on a traveling machine and an exhaust gas purifying device connected to the engine and purifying the exhaust gas of the engine with a reducing agent are provided.
A reducing agent tank for storing the reducing agent and a fuel tank for storing the fuel of the engine are provided on the outer peripheral portion of the traveling machine body, and the reducing agent tank is located above the fuel tank. ,
A mounting table is provided that can switch between a used state and a stored state in which a replenishing container for replenishing the reducing agent can be placed in the reducing agent tank by vertical swing.
The above-mentioned stand swings downward to enter the used state, swings upward to enter the stored state, and when switched to the used state, is located above the fuel filler port of the fuel tank and switches to the stored state. Then, the harvester located on the outside of the reducing agent tank in a state adjacent to the reducing agent tank. The outer peripheral portion is the rear portion of the traveling machine body, and is
The harvester according to claim 1 , wherein the fuel filler port extends rearwardly from the fuel tank. A drain portion is provided at the bottom of the reducing agent tank.
The harvest according to claim 1 or 2, which is provided below the reducing agent tank and is provided with a gutter member that guides the reducing agent flowing out of the drain portion toward the outside of the traveling machine of the fuel tank. Machine. The harvester according to claim 3 , wherein the gutter member is supported by a support column member that supports the reducing agent tank.

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