JP2019041628A - Combine harvester - Google Patents

Abstract

To provide a combine harvester capable of improving workability and maintainability related to a urea water tank.SOLUTION: A combine harvester 1 includes a grain tank 8, a grain-lifting part 9a, an exhaust gas purification device, a urea water tank 20, and a cover 91. The exhaust gas purification device includes a urea SCR catalyst which reduces exhaust gas of an engine 11 by using ammonia generated from urea water and purifies. The urea water tank 20 is arranged in an inclination bottom wall 81 which the bottom of the grain tank 8 has, and a storage space 93 formed below the inclination bottom wall 81, and accumulates urea water to be supplied to the urea SCR catalyst. The cover 91 is openably/closably provided in the rear part of the grain tank 8, and integrally covers the grain-lifting part 9a and a rear part 94 of the storage space 93 in closing. When the cover 91 is opened, a water supply port 21 of the urea water tank 20 is exposed from the rear part 94 of the storage space 93.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a combine.

  Conventionally, there is a combine in which an exhaust gas purification device for purifying an exhaust gas of an engine is provided on an airframe frame in order to comply with an exhaust gas regulation that is being strengthened in recent years. In such an exhaust gas purification apparatus, a urea SCR (Selective Catalytic Reduction) catalyst that purifies ammonia by reacting ammonia generated from an aqueous urea solution (hereinafter referred to as "urea aqueous") with nitrogen oxides in the exhaust gas is used. There is something included.

  When the exhaust gas purification apparatus is configured to include a urea SCR catalyst, a urea water tank for storing urea water to be supplied to the urea SCR catalyst is appropriately installed. There is one which is disposed in a space between an inclined bottom wall provided at the bottom of a grain tank and an airframe (see, for example, Patent Document 1).

JP, 2016-42850, A

  However, in the conventional combine as described above, there is room for further improvement in the operation of injecting water into the urea water tank and the maintainability of the urea water tank.

  This invention is made in view of the above, Comprising: It aims at providing the combine which can improve the operativity and maintenance property regarding a urea water tank.

  In order to solve the above-mentioned problems and achieve the object, the invention according to claim 1 comprises a gren tank (8), a threshing part (9a) of a discharge auger (9), and an exhaust gas purification device; A combine (1) including a urea aqueous solution tank (20) and a cover (91). The grain tank (8) is provided on an airframe frame (2) in which an engine (11) is installed, and stores grains threshed by a threshing device (6). The grain rising portion (9a) is a grain rising portion (9a) of a discharge auger (9) which is provided behind the gren tank (8) and discharges grains stored in the gren tank (8). . The exhaust gas purification apparatus includes a urea SCR catalyst that purifies the exhaust gas of the engine (11) by reducing it using ammonia generated from urea water. The urea aqueous solution tank (20) is disposed in an inclined bottom wall (81) at the bottom of the gren tank (8) and a storage space (93) formed below the inclined bottom wall (81). The urea aqueous solution to be supplied to the urea SCR catalyst is stored. The openable and closable cover (91) is an openable and closable cover (91) that integrally covers the raised grain portion (9a) and the rear portion (94) of the storage space (93). And when the said cover (91) is open | released, it is set as the combine (1) which the water supply port (21) of the said urea water tank (20) is exposed from the rear part (94) of the said accommodation space (93).

  In the invention according to claim 2, the urea aqueous solution tank (20) is disposed such that the water supply port (21) faces rearward, and the water supply port (21) is a part of the gren tank (8). The combine (1) according to claim 1, wherein the combine (1) is disposed in front of the rear side (82).

  The invention according to claim 3 is configured such that a work space (100) in which a work tray (95) can be installed is formed behind the water supply port (21) with the cover (91) opened. It is set as combine (1) of Claim 2 and Claim 2.

  The invention according to claim 4 is characterized in that the urea aqueous solution tank (20) is provided on the inclined bottom wall (81) of the gren tank (8) facing the storage space (93). The combine (1) according to claim 3, wherein the combine (1) is disposed rearward of a bag lock hook (84) provided on both sides of the bag outlet (83).

  The invention according to claim 5 is a helical mechanism (40) which is disposed inside the inclined bottom wall (81) and transports grains in the gren tank (8) toward the grain raising section (9a). And an open / close mechanism (86) for opening and closing the spiral cover (85) covering the lower part of the spiral mechanism (40); The combine (1) according to claim 4, wherein an operation space (800) for operating the opening / closing mechanism (86) is formed between the inclined bottom wall (81) and the inclined bottom wall (81).

  The invention according to claim 6 is characterized in that the gren tank (8) is provided rotatably on the longitudinal axis toward the outside of the machine body frame (2), and a plurality of hoses connected to the urea water tank (20) A combine (1) according to claim 5, wherein 300) is routed along the rear side (82) of the glen tank (8).

  The invention according to claim 7 is a lock pin (210) provided on the side of the grain tank (8) and capable of being inserted into a lock hole (220) provided in the body frame (2), and the lock pin (210). And the operation switch (240) provided on the outer surface of the gren tank (8) to drive the motor (230), and the grain amount in the gren tank (8) Of the motor (230) regardless of the operation of the operation switch (240) when the weir sensor (250) for detecting the grain size and the weir sensor (250) detect a grain amount equal to or more than a predetermined amount. The combine (1) according to any one of claims 1 to 6, further comprising: a control unit (200) for inhibiting driving.

  According to the first aspect of the present invention, when the cover 91 covering the grain rising portion 9a of the discharge auger 9 is opened, the water supply port 21 of the urea water tank 20 is exposed, which facilitates the water supply operation. Further, since the water supply port 21 of the urea water tank 20 can also be covered by the cover 91 covering the raised grain portion 9a, the accumulation of dust such as scale on the water supply port 21 and its peripheral portion can be reduced.

  According to the second aspect of the invention, in addition to the effects of the first aspect of the invention, the water supply port 21 of the urea aqueous solution tank 20 is located forward of the rear side surface 82 of the glen tank 8. For example, it is possible to reduce the accumulation of chips and the like on the cap of the water supply port 21 and the like.

  According to the third aspect of the invention, in addition to the effects of the second aspect of the invention, the work space is formed at the rear of the water supply port 21 by opening the cover 91 which covers the grain rising portion 9a. Therefore, the work tray 95 can be installed in this work space, and the water supply work from the water supply port 21 can be easily performed using the work tray 95.

  According to the fourth aspect of the present invention, in addition to the effects of the third aspect of the present invention, the urea aqueous solution tank 20 is less likely to interfere with the bagging operation of the remaining grains from the straw outlet 83.

  According to the invention of claim 5, in addition to the effects of the invention of claim 4, the inside of the gren tank 8 is utilized utilizing the operation space formed between the urea water tank 20 and the inclined bottom wall 81. Can easily open and close the spiral cover 85 covering the lower part of the spiral mechanism 40 for conveying the kernels of the grain to the grain-raising portion 9a, and discharge the grain remaining in the gren tank 8 for the next field. It is possible to prevent mixed varieties (grains of different varieties) being mixed at the time of harvest work.

  According to the invention of claim 6, in addition to the effect of the invention of claim 5, the trouble that the hose 300 is entangled by arranging the hose 300 along the rear side surface of the glen tank 8 In addition, the movement of the hose 300 can be minimized even when the glen tank 8 is turned on the vertical axis, and problems such as damage to the hose 300 can be reduced.

  According to the seventh aspect of the invention, in addition to the effect of the first aspect of the invention, in a state where grains of a predetermined amount or more are stored in the glen tank 8, Since the glen tank 8 can not be rotated in the longitudinal direction to the outer side of the machine body, damage to the vertical axis and the gren tank 8 can be prevented.

FIG. 1A is a right side view of the combine according to the embodiment. FIG. 1B is a right side view showing a state in which a cover covering the rear of the combine is open. FIG. 2 is a rear view of the above combine. FIG. 3 is a plan view of the above combine. FIG. 4 is an explanatory view showing the main part of the combine according to the same. FIG. 5A is an explanatory view showing the positional relationship between the grain tank and the urea water tank of the combine according to the above, in a rear view. FIG. 5B is an explanatory view showing in side view the positional relationship between the grain tank and the urea water tank of the combine according to the first embodiment. FIG. 6A is an explanatory view showing the urea water tank and the cover of the combine as above in a rear view. FIG. 6B is an explanatory view showing the urea water tank and the cover of the combine as above in a side view. FIG. 7A is an explanatory view showing a mudguard cover provided in the combine according to the above, in a rear view. FIG. 7B is an explanatory view showing the same mudguard cover in plan view. FIG. 8A is an explanatory view showing the grain tank turning mechanism of the combine according to another embodiment in a front view. FIG. 8B is an explanatory view showing the arrangement of the weir sensor that constitutes the above-mentioned grain tank turning mechanism. FIG. 9 is a right side view of the combine according to another embodiment of the same.

  Embodiments of the combine according to the present invention will be described in detail based on the drawings. Note that the present invention is not limited by this embodiment, and various modifications can be made without departing from the scope of the present invention. Furthermore, constituent elements in the following embodiments include ones that can be easily replaced by persons skilled in the art, or ones that are substantially the same and so-called equivalent ranges.

  1A is a right side view of the combine according to the embodiment, FIG. 1B is a right side view showing a state in which a cover covering the rear of the combine is opened, FIG. 2 is a rear view of the combine, and FIG. , It is a top view of the combine. In the following description, the longitudinal direction, the lateral direction, and the vertical direction in the normal use mode of the combine 1 will be described as the longitudinal direction, the lateral direction, and the vertical direction in each part.

  Among these, "front" is the advancing direction of the combine 1 at the time of mowing work, and "back" is the opposite direction. The "left" is in the left direction toward the front, and the "right" is in the opposite direction. Also, "lower" is the direction in which gravity acts, and "upper" is the opposite direction. Note that these directions are defined for the sake of convenience to make the explanation easy to understand, and the present invention is not limited by these directions. Moreover, below, the combine 1 may be pointed out and it may be called an "body."

<Overall Configuration of Combine 1>
First, the overall configuration of the combine 1 will be briefly described. As shown in FIGS. 1A, 1 B, 2 and 3, the combine 1 includes an airframe frame 2, a traveling device 3 provided below the airframe frame 2, an upper portion of the airframe frame 2 and an airframe 2. It comprises various work devices provided forward and a cabin 7 provided on the upper front side of the machine frame 2. The cabin 7 is provided with various control levers and meters.

  The traveling device 3 is provided with a pair of left and right crawler belts 3 a which are transmitted by power transmitted from an engine 11 installed on the vehicle body frame 2 and circulated. The traveling device 3 causes the vehicle to travel as the crawler belt 3a revolves. The crawler belt 3a is formed endlessly by an elastic body such as rubber. The traveling device 3 further includes a driving wheel 3b for rotating the crawler belt 3a and a tension wheel 3c for applying tension to the crawler belt 3a in the front-rear direction of the vehicle.

  As various working devices, for example, a mowing device 4 provided in front of the machine frame 2, a threshing device 6 provided on the upper left side of the machine frame 2, and a gren tank provided on the upper right side of the machine frame 2 8 and a grain discharge auger (a grain raising portion 9a and a conveyance portion 9b) 9 disposed above the threshing device 6 and the grain tank 8 and discharging grains stored in the grain tank 8. In addition, as a work apparatus, the grain gravel transport apparatus (not shown) is also provided in the left side of the cabin 7 on the body frame 2. As shown in FIG.

  Then, in the reaper 4, the grain weeds are harvested, and the cut grain weeds are transported toward the threshing device 6 by the grain conveying device 5, and the grain threshed and sorted by the threshing device 6 is stored in the gren tank 8. Ru. The grains stored in the gren tank 8 are discharged to the outside of the machine by the grain discharge auger 9. The grain discharging auger 9 includes a lifting grain portion 9a erected to the rear of the gren tank 8, a conveying portion 9b connected in communication with the grain lifting portion 9a and extending forward, and a tip end of the conveying portion 9b. A connected discharge cylinder 9c is provided.

  The reaper 4 comprises a dividing weir 4a for dividing the cereal grains in the field, a raising device 4b for causing the mixed cereal grains, and a cutting blade for cutting the root of the caused cereal grains. In the reaper 4, the grain weed to be planted in the field is branched with the dividing weir 4a, the grained weed is caused by the raising device 4b, and the caused grain weed is cut away with a cutting blade. In addition, the cropped wheat straw is conveyed toward the threshing device 6 by the cereal grain transportation device 5.

  In the threshing apparatus 6, the grain sorted by the sorting section after threshing is fed to the gren tank 8 by the grain growing apparatus. In the grain tank 8, the stored grains are fed to the threshing portion 9 a of the grain discharge auger 9 provided at the rear of the grain tank 8 (at the rear of the airframe 2). In the grain-raising section 9a, the grain fed in is conveyed upward, and is fed to the conveyance section 9b. The transport section 9 b transports the fed grain in a substantially horizontal direction and discharges it from the discharge cylinder 9 c provided at the front end.

  By the way, as shown to FIG. 1A, most parts including the lower half part of the grain-raising part 9a are covered by the cover 91 which can be opened and closed at the time of normal work etc. FIG. Then, for example, when the cover 91 is opened (see the arrow in FIG. 3) when water is supplied to the urea water tank 20 of the exhaust gas purification apparatus or when the fuel is replenished, as will be described later. The equipment and devices disposed in the lower part of the grain portion 9a and in the vicinity thereof are exposed (see FIGS. 1B and 2).

  Further, in a cabin 7 provided on the upper front side of the body frame 2, a pilot seat, various control levers, instruments, operation panels, and a monitor capable of displaying various information are provided.

  Further, as shown in FIGS. 1A and 1B, an engine room 10 is provided below the cabin 7 on the airframe frame 2. In the engine compartment 10, a radiator for cooling the engine 11 and the like are accommodated in addition to the engine 11 which is a power source.

  The engine 11 disposed in the engine room 10 is a diesel engine and is accommodated in the engine room 10 provided in front of the glen tank 8. Here, the engine 11 is installed on the right side of the airframe frame 2 and connected to an exhaust gas purification device (not shown) provided on the airframe frame 2.

  The exhaust gas purifier is connected to the exhaust pipe of the engine 11, and purifies by DPF (Diesel Particulate Filter) for removing particulate matter in the exhaust gas and selective catalytic reduction using urea water, ie, The nitrogen oxide in the exhaust gas after passing through the DPF is provided with a urea SCR catalyst that reacts ammonia generated by hydrolysis of urea water to convert it into harmless nitrogen.

  Further, as shown in FIG. 1B and FIG. 2, a urea aqueous solution tank 20 for storing urea aqueous solution supplied to the urea SCR catalyst is provided as a peripheral device of the exhaust gas purification device. The urea aqueous solution tank 20 is preferably provided at a position away from the engine 11 so as not to be affected by heat (exhaust heat) from the engine 11 so as to suppress deterioration of urea aqueous solution.

  In the present embodiment, the urea aqueous solution tank 20 is disposed on the side of the airframe frame 2 on which the grain tank 8 is provided, that is, on the right side of the airframe and near the rear of the grain tank 8.

<Arrangement of Urea Water Tank 20>
Here, the arrangement and the like of the urea water tank 20 will be specifically described. FIG. 4 is an explanatory view showing the main part of the combine 1. 5A is an explanatory view showing the positional relationship between the grain tank 8 and the urea water tank 20 of the combine 1 in a rear view, and FIG. 5B is an explanatory view showing the same in a side view. 6A is an explanatory view showing the urea water tank 20 and the tank cover 92 of the combine 1 in a rear view, and FIG. 6B is an explanatory view shown in the same side view.

  The grain tank 8 is provided on the right side opposite to the threshing device 6 provided on the left side on the body frame 2 (see FIG. 3), and as shown in FIG. It has a bottom shaped like a bottom. As described above, the bottom of the gren tank 8 has the inclined bottom walls 81, 81, whereby the downward flow of the grain stored in the gren tank 8 can be improved.

  In this embodiment, the urea water tank is placed in the storage space 93 formed below the inclined bottom wall 81 on the right side as shown in FIGS. 5A and 5B, with the inclination of the inclined bottom wall 81 on the right side being steeper than the left side. There are twenty. With this configuration, it is possible to secure a space for disposing the urea water tank 20 on the machine frame 2 while securing the required capacity of the grain tank 8.

  As shown in FIGS. 1A and 1B, the storage space 93 has a length substantially the same as that of the gren tank 8 and is formed concave toward the inside of the gren tank 8 and covers the long side with the tank cover 92. A part of the rear side of the grain tank 8 is covered with a closing plate 98 (see FIG. 4).

  As shown in FIG. 6A, the tank cover 92 is formed in a substantially L-shaped cross-sectional view with chamfered corners, and is attached to and detached from the gren tank 8 via the holding stay 22 for holding the urea water tank 20. It can be mounted freely. That is, as shown in FIGS. 6A and 6B, the base of the holding stays 22 formed substantially in a U-shape is detachably connected to the inclined bottom wall 81 of the grain tank 8, and the holding stays 22 are fixed thereto. The urea water tank 20 is suspended at the front and back. Further, two front and rear cover locking stays 23, 23 are connected to the holding stays 22, 22 via a connecting rod 24.

  Therefore, the tank cover 92 can not be attached unless the holding stay 22 is attached to the gren tank 8 and the urea aqueous solution tank 20 can be disposed. That is, in the state where the tank cover 92 is attached, the inside of the storage space 93 can not be visually observed, but in order to attach the tank cover 92, the holding stays 22, 22 for holding the urea water tank 20 are Because it must be installed, the tank cover 92 is attached without the urea water tank 20 being disposed in the storage space 93, and there is a risk that the exhaust gas purification device may not function sufficiently and cause engine trouble. It can be prevented.

  As described above, the urea aqueous solution tank 20 is disposed on the gren tank 8 as a hanging support in the storage space 93 formed below the inclined bottom wall 81 on the right side of the gren tank 8 and by the tank cover 92 Covered outside and below. Therefore, for example, a splash of mud from the crawler belt 3a of the traveling device 3 can be prevented, and the urea water tank 20 can be kept hygienic.

  On the other hand, as shown in FIG. 5A, inside the inclined bottom wall 81 of the gren tank 8, a spiral mechanism 40 for conveying the grains in the gren tank 8 toward the grain raising portion 9a is disposed. The lower part of the spiral mechanism 40 is covered openably and closably by a spiral cover 85. In the present embodiment, the spiral cover 85 which can be opened and closed can be opened and closed by an opening and closing mechanism 86 provided with a toggle mechanism and the like.

  In the storage space 93, an operation space 800 for operating the open / close mechanism 86 is formed between the urea water tank 20 and the inclined bottom wall 81 of the grain tank 8. Therefore, by using the operation space 800, the opening and closing operation of the spiral cover 85 covering the lower part of the spiral mechanism 40 can be easily performed, and the grains remaining in the gren tank 8 are discharged to the next field. At the time of the harvesting operation in, it is possible to prevent mixed species in which grains of different varieties are mixed.

  Further, at the rear of the glen tank 8, an openable / closable cover 91 is provided which integrally covers the rear opening 94 of the storage space 93 in which the urea water tank 20 is disposed and the raised grain portion 9a. As shown in FIG. 3, the cover 91 is formed in a substantially L shape in cross section, and a handle 910 is attached, and as shown in FIG. 2, pivot shafts 915 and 915 provided vertically are provided. It can be opened and closed freely.

  When the cover 91 is opened, the urea water tank 20 is supplied with water from the rear opening 94 formed between the rear of the storage space 93, that is, the rear side surface 82 of the glen tank 8 and the closing plate 98 covering the rear of the storage space 93. The mouth 21 is exposed.

  As shown in FIGS. 5A and 5B, the urea aqueous solution tank 20 is formed in a rectangular box shape having a predetermined width, height and length, and is opened on an inclined surface formed to connect the rear surface and the upper surface. A water supply port 21 to which a cap is attached is provided.

  The urea water tank 20 is disposed in the storage space 93 such that the water supply port 21 is directed rearward. And the water supply port 21 of the urea water tank 20 is arrange | positioned rather than the rear side 82 of a grain tank, as shown to FIG. 5B.

  Therefore, it is possible to reduce the accumulation of chips and the like on the water supply port 21 of the urea water tank 20 or on a cap attached to the water supply port 21 or the like.

  Further, as shown in FIG. 4, when the cover 91 is opened, a poly tank for supplying water to the urea water tank 20 or for refilling fuel to the fuel tank, for example, behind the water supply port 21 of the urea water tank 20. A work space 100 in which a work tray 95 on which to place a work can be installed is formed.

  As shown in FIG. 4, in the working space 100, a drive motor 900 for driving a spiral mechanism of the raised grain portion 9a is disposed at the rear position of the raised grain portion 9a. A work tray 95 can be detachably attached to the unit 901. Here, an insertion hole (not shown) is formed on the side surface of the motor case 901, and an engagement piece protruding from one side edge of the work tray 95 is inserted into the insertion hole to level the work tray 95 horizontally. It can be held.

  Further, as illustrated, in the working space 100, the fuel supply port 96 of the fuel tank (not shown) is facing, and both the fuel supply port 96 and the water supply port 21 of the urea water tank 20 both use the work tray 95. It is provided to be oriented. The work tray 95 is configured to be horizontally holdable at a position lower than the water supply port 21 and the fuel supply port 96 in consideration of the height of the poly tank and the like. Therefore, when the work space 100 is secured by opening the cover 91 and the work tray 95 is installed, either the water supply operation to the urea aqueous solution tank 20 or the fuel supply operation to the fuel tank can be easily performed. be able to. In FIG. 4, reference numeral 97 indicates a rubber member that receives oil that has splashed or dropped during refueling.

  Further, as shown in FIG. 4, a plurality of hoses 300 connected in communication with the urea aqueous solution tank 20 are routed along the rear side surface 82 of the grain tank 8. The plurality of hoses 300 are, for example, a urea water circulation hose connected to the urea SCR catalyst of the exhaust gas purification device, a cooling water hose for circulating cooling water of the engine 11, and the like. Thus, the hose 300 connected to the urea water tank 20 is bent from the rear opening 94 of the storage space 93 to the left side of the machine and routed along the rear side surface 82 of the glen tank 8 and by the clamp 310 It is held.

  With such a configuration, for example, even when the gren tank 8 can be turned, that is, it can be turned in the horizontal direction (see other embodiments), the movement of the hose 300 can be performed even if the gren tank 8 is rotated on the vertical axis The amount can be kept to a minimum, and problems such as damage to the hose 300 can be reduced. Then, the length of the hose 300 can be shortened as much as possible, and problems such as the hose 300 being entangled can be prevented in advance.

  As described above, the working space 100 in which the water supply port 21 of the urea water tank 20, the fuel supply port of the fuel tank, the drive motor 900 for driving the spiral mechanism of the raised grain portion 9a of the grain discharge auger 9 etc. , Is covered by a cover 91. Therefore, they can be protected from external impact and the appearance can also be improved.

  In addition, since the working space 100 is formed at the rear of the water supply port 21 by opening the cover 91 which covers the grain rising portion 9a, the workability such as maintenance becomes good, for example, the working tray in the working space 100 95 can be installed, and the water supply operation from the water supply port 21 can be easily performed using the work tray 95.

  The lower pivot shaft 915 (see FIG. 2) for supporting the cover 91 so as to open and close freely is a position avoiding the rear opening 94 where the water supply port 21 of the urea water tank 20 is provided, specifically, the rear opening It is provided on the outer side and upper position than 94. Therefore, the entire rear opening 94 in which the water supply port 21 is provided faces the work space 100, and the pivot shaft 915 does not interfere with the water injection operation.

  Further, as shown in FIG. 5B, the urea aqueous solution tank 20 sandwiches a weir outlet 83 and the weir outlet 83 provided on the inclined bottom wall 81 on the right side of the glen tank 8 so as to face the storage space 93. It is arrange | positioned back rather than the bag locking hook 84 provided by.

  That is, on the sloped bottom wall 81 on the right side of the glen tank 8, the gutter outlet 83 for taking out the gutter etc. which remained in the gren tank 8, and a plurality of gutter bags for locking the gutter bag 500 containing the gutter A locking hook 84 is provided. When the crucible is taken out, the tank cover 92 is removed and the operation is performed, but in the present embodiment, the urea aqueous solution tank 20 is disposed at the rear of the bag outlet 83 and the bag locking hook 84. Therefore, the urea aqueous solution tank 20 is less likely to interfere with the work of taking out the soot, so the work can be performed more smoothly. Although the description of the details of the structure of the smoke removal port 83 is omitted, an openable shutter is provided at the opening formed in the glen tank 8 and the smoke and the like discharged through the shutter can The slider portion 83a is provided to guide the vehicle.

  Moreover, the combine 1 which concerns on this embodiment has provided the mudguard cover 400 between the urea water tank 20 mentioned above and the crawler belt 3a of the driving | running | working apparatus 3. As shown in FIG. FIG. 7A is an explanatory view showing the mudguard cover 400 provided in the combine 1 in a rear view, and FIG. 7B is an explanatory view showing the mudguard cover 400 in a plan view.

  As shown in FIGS. 7A and 7B, the mudguard cover 400 is provided on the right side of the airframe frame 2 and has a width slightly protruding from the outer edge of the crawler belt 3a. By providing such a mudguard cover 400, in cooperation with the tank cover 92, it is possible to more reliably prevent the entry of mud splashes from the crawler belt 3a into the storage space 93. Therefore, the urea water tank 20 disposed in the storage space 93 can be hygienically held.

  By the way, about the upper surface 401 of the mudguard cover 400, as shown to FIG. 7A, it is made into the inclined surface which has a downward slope toward the aircraft exterior direction. The inclined surface can prevent accumulation of dust such as dust on the mudguard cover 400. In the present embodiment, the inclination angle of the upper surface 401 of the mudguard cover 400 is substantially equal to the inclination angle of the slider portion of the skiver outlet 83 located above the mudguard cover 400. It does not disturb the removal work.

(Other embodiments)
In the embodiment described above, the gren tank 8 is described as being fixed on the body frame 2, but the gren tank 8 is rotated from the working position on the body frame 2 to the maintenance position on the outer side of the body frame 2. It can also be configured to be movable. FIG. 8A is an explanatory view showing the grain tank turning mechanism of the combine 1 according to another embodiment in a front view, and FIG. 8B is an explanatory view showing the arrangement of the weir sensor 250 that constitutes the grain tank turning mechanism. FIG. 9 is a right side view of the combine 1 according to another embodiment. In FIG. 8A to FIG. 9, the elements having the same functions as those of the previous embodiment are denoted by the same reference numerals, and the detailed description thereof is omitted.

  The gren tank 8 according to the present embodiment is configured to be able to turn (turn) in the horizontal direction centering on a turning axis which is a longitudinal axis (not shown) provided at the rear of the tank by a gren tank turning mechanism. As shown in FIG. 8A, at the time of closing, the fixing hook 260 provided on the upper part of the tank front side surface 87 is engaged with the fuselage side frame (not shown) side and is in the locked state. It is inserted into the lock hole 220 provided on the As described above, the glen tank 8 is in a double lock state at the time of closing to prevent unintentional turning as much as possible.

  Further, in the present embodiment, as shown in FIG. 8A and FIG. 9, the control unit 200 for controlling the glen tank turning mechanism is provided, and the lock pin 210 can not be released unless a predetermined condition is satisfied. It is done.

  That is, in addition to the fixing hook 260 and the lever 270 connected to the fixing hook 260 via the link 280, the gren tank turning mechanism is provided on the lock pin 210 provided on the gren tank 8 side and the machine frame 2 The lock hole 220, a motor 230 for moving the lock pin 210 up and down, and an operation switch 240 (see FIG. 9) provided on the side of the grain tank 8 and driving the motor 230 when the switch is turned on.

  Furthermore, as shown in FIG. 8B and FIG. 9, the grain tank turning mechanism detects the grain amount of grain in the grain tank 8, and the grain sensor 250 detects a grain amount equal to or more than a predetermined amount. In this case, the control unit 200 is configured to prohibit the drive of the motor 230 regardless of the operation of the operation switch 240.

  With this configuration, the remaining amount of soot in the glen tank 8 is detected by the soot sensor 250, and when a soot having a predetermined amount or more is contained, the control unit 200 prohibits the drive of the motor 230 and the lock pin 210 Does not come out of the lock hole 220. As described above, when the glen tank 8 is turned, it is a condition that most of the bale is discharged from the gren tank 8.

  As described above, according to the present embodiment, in a state where grains of a predetermined amount or more are stored in the gren tank 8, the gren tank 8 can not be rotated in the longitudinal direction to the outer side of the machine body. And damage to the glen tank 8 can be prevented.

  When the gutter is less than the predetermined amount and the glen tank 8 is turned, as shown in FIG. 9, the lock pin 210 is moved upward by pressing the operation switch 240 provided on the right side surface of the gren tank 8. It is possible to move the lock tank 220 out of the lock hole 220 and operate the lever 270 interlockingly connected to the fixing hook 260 to release the lock by the fixing hook 260 so that the gren tank 8 can be turned. The lock pin 210 is preferably configured to be able to move up and down manually so that the glen tank 8 can be turned even if the operation switch 240 breaks down.

  Further, a sensor (not shown) for detecting the position of the lock pin 210 or the like is provided and connected to the control unit 200 of the grain tank turning mechanism, and an engine control unit (not shown) for controlling the control unit 200 and the engine 11 And the lock pin 210 is not properly inserted into the lock hole 220, the start of the engine 11 may be prohibited. With this configuration, it is possible to prevent traveling in a state in which the glen tank 8 may open.

  Also, conversely, when the engine 11 is started, the driving of the motor 230 for moving the lock pin 210 is prohibited to prevent the gren tank 8 from being erroneously turned while traveling. You can also

  In addition, the cleaning mode of the gren tank 8 is set as one of the operation modes of the combine 1, and when the cleaning mode is set, the control unit 200 or the engine control unit is in the process of starting the engine 11. However, the motor 230 can also be driven.

  The control of the engine 11 and the control of the glen tank swing mechanism may be performed by one control unit without separately forming the control unit 200 and the engine control unit.

  By the way, although the urea aqueous solution tank 20 is disposed in the storage space 93 formed under the inclined bottom wall 81 of the grain tank 8 also in the present embodiment, it becomes an obstacle to the turning of the grain tank 8. There is no. That is, since the urea water tank 20 is in a state of being supported by the gren tank 8, when the gren tank 8 turns around the turning axis, the urea water tank 20 also turns together.

  The following combine 1 is realizable from embodiment mentioned above.

  (1) A gren tank 8 provided on an airframe frame 2 on which an engine 11 is installed and storing kernels threshed by a threshing device 6 and a gren tank 8 erected in the rear and stored in the gren tank 8 And an exhaust gas purification device including a urea SCR catalyst which purifies the exhaust gas of the engine 11 by reducing the exhaust gas of the engine 11 using ammonia generated from urea water; and A urea water tank which is disposed in an inclined bottom wall 81 provided at the bottom of the grain tank 8 and a storage space 93 formed below the inclined bottom wall 81 and which stores urea water to be supplied to the urea SCR catalyst 20, and an openable / closable cover 91 integrally covering the rear of the storage grain portion 9a and the storage space 93, and when the cover 91 is opened, the urea water tank 20 is supplied from the rear opening 94 of the storage space 93. Combine 1 mouth 21 is exposed.

  (2) In the configuration of the above (1), the urea water tank 20 is disposed such that the water supply port 21 is directed rearward, and the water supply port 21 is disposed further forward than the rear side surface 82 of the glen tank 8. Combine 1.

  (3) In the configuration of the above (2), the combine 1 is configured such that the work space 100 in which the work tray 95 can be installed is formed behind the water supply port 21 with the cover 91 opened.

  (4) In the configuration of the above (3), the urea aqueous solution tank 20 is provided with a weir outlet 83 provided on the inclined bottom wall 81 facing the storage space 93 and an weir outlet 83 in front and back. Combine 1 disposed behind the bag locking hook 84.

  (5) In the configuration of the above (4), a spiral mechanism 40 which is disposed inside the inclined bottom wall 81 and transports the grains in the grain tank 8 toward the grain raising portion 9a; It further comprises an openable and closable spiral cover 85 covering the lower part, and an opening and closing mechanism 86 for opening and closing the spiral cover 85, and between the urea water tank 20 and the inclined bottom wall 81 to operate the opening and closing mechanism 86. Combine 1 in which the operation space 800 of was formed.

  (6) In the configuration of the above (5), the gren tank 8 is provided to be rotatable on the vertical axis toward the outside of the machine frame 2 and the plurality of hoses 300 connected to the urea water tank 20 are arranged behind the gren tank 8. Combine 1 routed along side 82.

  (7) In any one of the configurations (1) to (6), the lock pin 210 provided on the side of the gren tank 8 and capable of being inserted through the lock hole 220 provided in the machine frame 2 and the lock pin 210 are vertically moved. The motor 230 and the operation switch 240 provided on the side surface of the gren tank 8 to drive the motor 230, the straw sensor 250 for detecting the grain amount in the gren tank 8, and the grain having a predetermined amount or more of the straw sensor 250 And a control unit 200 for prohibiting the drive of the motor 230 regardless of the operation of the operation switch 240 when the amount is detected.

  Note that further modifications and effects of the above-described embodiment can be easily derived by those skilled in the art. Thus, the broader aspects of the present invention are not limited to the specific details and representative embodiments represented and described above. Accordingly, various modifications may be made without departing from the spirit or scope of the general inventive concept as defined by the appended claims and their equivalents.

DESCRIPTION OF SYMBOLS 1 Combine 2 Airframe frame 8 Glen tank 9a Lifting grain part 20 Urea water tank 21 Water supply port 40 Water supply port 40 Spiral mechanism 81 Inclined bottom wall 82 Rear side surface 83 Tack outlet 84 Bag lock hook 85 Spiral cover 86 Open and close mechanism 91 Cover 93 Storage space 94 rear opening 200 control unit 210 lock pin 220 lock hole 230 motor 240 operation switch 250 籾 sensor 300 hose

In order to solve the problems described above and to achieve the object, the invention according to claim 1 comprises a gren tank (8), a grain lifting section (9a) of a discharge auger (9), and an exhaust gas purification device; A combine (1) including a urea water tank (20), a work tray (95), and a cover (91). The grain tank (8) is provided on an airframe frame (2) in which an engine (11) is installed, and stores grains threshed by a threshing device (6). The grain rising portion (9a) is a grain rising portion (9a) of a discharge auger (9) which is provided behind the gren tank (8) and discharges grains stored in the gren tank (8). . The exhaust gas purification apparatus includes a urea SCR catalyst that purifies the exhaust gas of the engine (11) by reducing it using ammonia generated from urea water. The urea aqueous solution tank (20) is disposed in an inclined bottom wall (81) at the bottom of the gren tank (8) and a storage space (93) formed below the inclined bottom wall (81). The urea aqueous solution to be supplied to the urea SCR catalyst is stored. A work tray (95) is formed on the side surface of a motor case (901) of a drive motor (900) for driving the lift section (9a) disposed at the rear position of the lift section (9a). It has an engagement piece that can be inserted into the insertion hole, and is horizontally installed by inserting the engagement piece into the insertion hole so that it can be installed and a tank for water supply or refueling can be placed. Cover (91), said AgeKoku portion (9a) and said rear (94) openably provided so as to integrally cover the storage space (93), upon opening, the housing space (93) The water supply port (21) of the urea water tank (20) is exposed from the rear (94) of . Further, the urea aqueous solution tank (20) faces the storage space (93) and sandwiches a weir outlet (83) and the weir outlet (83) provided in the inclined bottom wall (81) in the front and rear direction. The water supply port (21) is disposed rearward of the provided hooking hook (84), and the water supply port (21) is disposed facing the rear, and the water supply port (21) is the glen tank (8). Can be installed in the rear of the water supply port (21) of the urea aqueous solution tank (20) with the cover (91) being disposed in front of the rear side surface of Working tray (100) is formed, and the working tray (95) is provided in the working space (100) with the fuel supply port of the fuel tank and the water supply port (21) of the urea water tank (20). Provided to be oriented towards the Placing the tank for water supply or lubrication in the tray (95) and combined to allow water operation or lubrication work (1).

The invention according to claim 2 further comprises a tank cover (92) covering the longitudinal side of the storage space (93), the tank cover (92) holding a urea water tank (20). The combine (1) according to claim 1, wherein the combine (1) is detachably attached to the glen tank (8) through 22) .

The invention according to claim 3 is a helical mechanism (40) which is disposed inside the inclined bottom wall (81) and transports the grains in the gren tank (8) toward the grain raising section (9a). And an open / close mechanism (86) for opening and closing the spiral cover (85) covering the lower part of the spiral mechanism (40); The combine (1) according to claim 1 or 2 , wherein an operation space (800) for operating the opening / closing mechanism (86) is formed between the inclined bottom wall (81) and the inclined bottom wall (81).

The invention according to claim 4 is characterized in that the gren tank (8) is provided rotatably on the longitudinal axis toward the outside of the machine body frame (2), and a plurality of hoses connected to the aqueous urea tank (20) A combine (1) according to claim 3 , wherein 300) is routed along the rear side (82) of the glen tank (8).

According to the fifth aspect of the present invention, there is provided a lock pin (210) provided on the side of the gren tank (8) and capable of being inserted into a lock hole (220) provided in the body frame (2); And the operation switch (240) provided on the outer surface of the gren tank (8) to drive the motor (230), and the grain amount in the gren tank (8) Of the motor (230) regardless of the operation of the operation switch (240) when the weir sensor (250) for detecting the grain size and the weir sensor (250) detect a grain amount equal to or more than a predetermined amount. The combine (1) according to any one of claims 1 to 4 , further comprising: a control unit (200) for prohibiting driving.

According to the first aspect of the present invention, when the cover 91 covering the grain rising portion 9a of the discharge auger 9 is opened, the water supply port 21 of the urea water tank 20 is exposed, which facilitates the water supply operation. Further, since the water supply port 21 of the urea water tank 20 can also be covered by the cover 91 covering the raised grain portion 9a, the accumulation of dust such as scale on the water supply port 21 and its peripheral portion can be reduced. Also, by installing the work tray 95 in the work space 100 when necessary and placing a tank for water supply or refueling on these, it is easy to supply water to the urea water tank 20 and refill fuel to the fuel tank. It can be carried out.

Further, since the water supply port 21 of the urea water tank 20 is located forward of the rear side surface 82 of the glen tank 8, it is possible to reduce, for example, the accumulation of chips and the like on the cap of the water supply port 21. .

In addition, since the work space is formed behind the water supply port 21 by opening the cover 91 covering the raised grain portion 9a, the work tray 95 is installed in this work space, and the work tray 95 is used. Thus, the water supply operation from the water supply port 21 can be easily performed. In addition, the urea water tank 20 is less likely to interfere with the operation of removing residual grains from the straw outlet 83.

According to the second aspect of the present invention, in addition to the effects of the first aspect of the present invention, the tank cover 92 is not attached without the urea aqueous solution tank 20 being disposed, and the urea aqueous solution tank 20 is disposed. It is possible to prevent in advance the possibility of causing an engine trouble without the exhaust gas purification device functioning sufficiently .

According to the invention set forth in claim 3 , in addition to the effects of the invention set forth in claim 1 or 2 , a gren tank utilizing an operation space formed between urea water tank 20 and inclined bottom wall 81 8 to easily carry out the opening and closing operation of the spiral cover 85 covering the lower part of the spiral mechanism 40 for conveying the grains in the grain 8 to the grain raising portion 9a, and discharging the grains remaining in the grain tank 8 to carry out the next field It is possible to prevent mixed varieties (grains of different varieties are mixed) at the time of harvest work in

According to the invention of claim 4 , in addition to the effect of the invention of claim 3 , the trouble that the hose 300 is entangled by arranging the hose 300 along the rear side surface of the glen tank 8 In addition, the movement of the hose 300 can be minimized even when the glen tank 8 is turned on the vertical axis, and problems such as damage to the hose 300 can be reduced.

According to the invention of claim 5 , in addition to the effect of the invention according to any one of claims 1 to 4 , in a state where grains of a predetermined amount or more are stored in the glen tank 8, Since the glen tank 8 can not be rotated in the longitudinal direction to the outer side of the machine body, damage to the vertical axis and the gren tank 8 can be prevented.

Claims (7)

A gren tank provided in an airframe provided with an engine and storing grains threshed by the threshing device;
A lifting auger of a discharge auger standing behind the gren tank and discharging grains stored in the gren tank;
An exhaust gas purification device including a urea SCR catalyst that purifies the exhaust gas of the engine by reducing it using ammonia generated from urea water;
An inclined bottom wall provided at the bottom of the grain tank, and a urea water tank disposed in a storage space formed below the inclined bottom wall and storing urea water to be supplied to the urea SCR catalyst;
And an openable and closable cover integrally covering the rear of the storage section and the storage space,
The combine according to claim 1, wherein the water supply port of the urea water tank is exposed from the rear of the storage space when the cover is opened. The urea water tank is
The combine according to claim 1, wherein the water supply port is disposed to be directed rearward, and the water supply port is disposed forward of a rear side surface of the glen tank. With the cover open,
The combine according to claim 2, wherein a working space in which a working tray can be installed is formed behind the water supply port. The urea water tank is
The combine according to claim 3, wherein the combine outlet is disposed on the rear side of a bag outlet provided on the inclined bottom wall facing the storage space and a bag hook provided on both sides of the bag outlet. A spiral mechanism disposed inside the inclined bottom wall for transporting grains in the grain tank toward the grain rising portion, an openable and closable spiral cover covering a lower portion of the spiral mechanism, and the spiral cover Further comprising an opening and closing mechanism for opening and closing,
5. The combine according to claim 4, wherein an operation space for operating the opening / closing mechanism is formed between the urea water tank and the inclined bottom wall. The glen tank is provided to be rotatable on the vertical axis toward the outside of the machine frame,
The combine according to claim 5, wherein a plurality of hoses connected to the urea water tank are arranged along the rear side of the gren tank. A lock pin provided on the glen tank side and insertable into a lock hole provided in the body frame;
A motor for moving the lock pin up and down;
An operation switch provided on the outer surface of the glen tank to drive the motor;
A weir sensor for detecting the amount of grain in the glen tank;
The control part which prohibits the drive of the said motor regardless of operation of the said operation switch, when the said indigo sensor is detecting the grain volume more than predetermined amount is provided with any one of Claim 1 to 6 Combines as described in.

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