JP2018121571A - combine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve such a problem that improvement of durability of a connection member between an engine and an exhaust gas treatment apparatus is desired.SOLUTION: A combine comprises: an engine 21 supported by a machine body frame 24; exhaust gas treatment apparatus 32 which is supported by the machine body frame 24, is connected to the engine 21 through a communication connection pipe 53 and clarifies exhaust gas from the engine 21; and a position adjustment mechanism T capable of changing and adjusting a support position of the exhaust gas treatment apparatus 32 with respect to the machine body frame 24.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a combine equipped with an engine and an exhaust gas treatment device that purifies exhaust gas from the engine.

  Conventionally, an exhaust gas treatment device using selective catalytic reduction (SCR) is provided as the exhaust gas treatment device, and the exhaust gas treatment device has a bellows-like structure such as a bellows type exhaust pipe and is configured to be extendable and contractible. It is connected to the exhaust gas discharge part of the engine via the connected connecting pipe. The engine is supported by the fuselage frame via a rubber mount mechanism, which is an elastic support, and the exhaust gas treatment device is fixed in position by a bolt connection to a column as a vertically oriented frame fixed to the fuselage frame. It was supported by the state (for example, refer patent document 1).

JP 2006-168975 A

In the combine, as described above, the engine is supported by the body frame via an elastic support such as rubber so that vibrations associated with the operation of the engine are not transmitted to the driver's seat or other devices.
In addition, the engine and the exhaust gas treatment device are connected through a communication connection pipe that is accordion-shaped and can be expanded and contracted, and even if the engine vibrates during operation, the axial direction of the communication connection pipe The vibration can be absorbed by the expansion and contraction operation along the line, so that the vibration is not directly transmitted to the exhaust gas treatment apparatus.

  However, when the expansion and contraction operation accompanying the vibration of the engine is repeated in a state where the connection pipe having the bellows-like structure is distorted in a state where the engine, the exhaust gas treatment device, etc. are assembled, This may cause early damage. Such assembly distortion is caused by an error during relative assembly between the engine and the exhaust gas treatment device.

  In the above-described conventional configuration, the engine and the exhaust gas treatment device are supported in a state where the position is fixed with respect to the body frame, so that there is a risk that assembly distortion as described above may occur due to the influence of the positional accuracy during assembly. There was a disadvantage that the durability of the connecting member such as the communication connecting pipe described above was lowered. By the way, the engine is supported by the body frame through the elastic support body, and the support position is determined after the assembly work is completed. However, in such a support structure of the engine, it is finally determined. Misalignment of the support position is likely to occur.

  Therefore, it has been desired to improve the durability of the connection member between the engine and the exhaust gas treatment device.

The characteristic configuration of the combine according to the present invention is as follows:
An engine supported by the fuselage frame;
An exhaust gas treatment device that is supported by the body frame and is connected to the engine via a communication connecting pipe to purify exhaust gas from the engine;
A position adjustment mechanism capable of changing and adjusting a support position of the exhaust gas treatment apparatus with respect to the body frame is provided.

  According to the present invention, after the assembly work is completed, by changing and adjusting the support position of the exhaust gas processing device relative to the machine frame, assembly distortion is not caused to the communication connection pipe and other members. The relative position between the engine and the exhaust gas treatment device can be changed.

  Therefore, it is possible to avoid the occurrence of assembly distortion due to the influence of positional accuracy during assembly of connecting members such as communication connection pipes, and there is a risk of early damage due to short-term use. As a result, the durability of the connection member between the engine and the exhaust gas treatment device can be improved.

  In the present invention, it is preferable that the position adjustment mechanism can change and adjust the support position in the horizontal direction.

  According to this configuration, since the exhaust gas treatment device is moved in the horizontal direction to change the support position, it can be moved in the horizontal direction while supporting the load, for example, in the vertical direction. Position adjustment work can be performed easily compared to the configuration to be adjusted.

  In the present invention, the machine body frame is provided with a vertically oriented frame body extending in the vertical direction, and the vertically oriented frame body is provided with an upper support portion located on the upper side and a lower support portion located on the lower side. The exhaust gas treatment apparatus is preferably supported by the vertically oriented frame body via the position adjusting mechanism in each of the upper support portion and the lower support portion.

  According to this configuration, the exhaust gas treatment device can be stably supported at both the upper and lower sides, and the support position of the exhaust gas treatment device can be changed at each of the upper and lower support portions. The support position with respect to the body frame can be adjusted without changing the vertical orientation of the aircraft.

  In the present invention, the exhaust gas treatment apparatus is supported by the upper side supported part placed and supported on the upper support part, and the lower side supported part with the lower support part sandwiched from both lateral sides. It is preferable that a support portion is provided.

  According to this configuration, since the upper side supported portion is placed and supported by the upper support portion, the load of the exhaust gas treatment device can be received and supported. Since the lower-side supported portion is supported in a state where the lower support portion is sandwiched and applied from both lateral sides, it is possible to prevent the displacement of the exhaust gas treatment device in the lateral direction.

  As a result, it is possible to support the exhaust gas treatment apparatus in a stable state by suppressing the occurrence of rattling due to the configuration in which the position change can be adjusted while receiving and supporting the load satisfactorily.

  In the present invention, the upper support portion is placed on and supported by the placement surface of the upper support portion, and is applied from the lateral outer side to the lateral guide surface of the upper support portion. It is preferable that a lateral support portion supported by the above is provided.

  According to this configuration, the upper side supported portion receives and supports the load of the exhaust gas treatment device by the placement support portion being placed and supported on the placement surface of the upper support portion, and the side support portion. Is applied to the lateral guide surface of the upper support portion from the laterally outer side, so that it is possible to prevent positional displacement in the lateral direction.

  Accordingly, since not only the lower side supported portion but also the upper side supported portion is prevented from being displaced in the lateral direction, the exhaust gas treatment apparatus can be supported in a stable state with little backlash.

  In the present invention, it is preferable that the position adjusting mechanism includes a shaft member extending in a direction intersecting the position change direction and a long hole through which the shaft member extends and extends along the position change direction. is there.

  According to this configuration, the support position of the exhaust gas treatment device can be changed and adjusted by the position adjustment mechanism having a simple configuration of the shaft member and the long hole through which the shaft member is inserted.

  In the present invention, as the exhaust gas treatment device, a first exhaust gas treatment device that purifies exhaust gas from the engine, and a second exhaust gas treatment device that purifies exhaust gas after being treated by the first exhaust gas treatment device. It is preferable that the position adjustment mechanism is capable of changing and adjusting a support position of at least one of the first exhaust gas treatment device and the second exhaust gas treatment device with respect to the body frame.

  According to this configuration, the exhaust gas from the engine is purified by the first exhaust gas treatment device, and further purified by the second exhaust gas treatment device. In this way, harmful substances contained in the exhaust gas, such as nitrogen oxides (NOx) and fine particulate substances (PM), can be removed by the two-stage purification treatment.

  And, for example, if the structure moves relatively between the engine and the first exhaust gas treatment device, the engine and the first exhaust gas treatment device can be adjusted by changing the support position of the first exhaust gas treatment device with respect to the body frame. It is possible to prevent premature damage of the connecting member connecting between the two. Further, if the configuration moves relative between the engine and the second exhaust gas treatment device, the support position of the second exhaust gas treatment device with respect to the body frame can be changed and adjusted so that the engine can be connected via the first exhaust gas treatment device. And early damage to the connecting member connecting the second exhaust gas treatment device. Further, if the first exhaust gas treatment device and the second exhaust gas treatment device are configured to move relative to the engine, the support positions of the first exhaust gas treatment device and the second exhaust gas treatment device with respect to the body frame are changed. By making the adjustment possible, it is possible to prevent early damage of the connection member that connects the engine and the first exhaust gas treatment device and between the first exhaust gas treatment device and the second exhaust gas treatment device.

It is a whole side view of a combine. It is a whole top view of a combine. It is a cross-sectional top view of a combine front part. It is a perspective view which shows the structure around an engine. It is a vertical side view which shows the structure around an engine. It is a disassembled perspective view which shows the support structure of a 2nd exhaust gas processing apparatus. It is a disassembled perspective view which shows the support structure of a 2nd exhaust gas processing apparatus. It is a disassembled perspective view of a heat shield cover. It is a vertical side view of the connection part of a heat shield cover and a cover member. It is a vertical rear view of the connection part of a heat shield cover and a cover member.

  Hereinafter, a case where an embodiment of the present invention is applied to a self-removing combine will be described with reference to the drawings.

〔overall structure〕
As shown in FIG.1 and FIG.2, the combine which concerns on this invention is provided with the cutting part 2 which reaps a planted grain cocoon in the front part of the traveling body which self-propels by the pair of left and right crawler traveling apparatuses 1,1. . A driving unit 4 whose periphery is covered with a cabin 3 is provided on the right side of the front part of the traveling machine body, and a threshing device 5 for threshing cereals harvested by the reaping part 2 and a threshing are provided at the rear part of the traveling machine body. The grain tank 6 which stores the grain obtained by the process is provided in a state of being aligned in the horizontal direction. A driving unit 8 is provided in a state of being positioned below the driving seat 7 in the driving unit 4 of the traveling machine body, and an unloader 9 for discharging the grains stored in the grain tank 6 to the outside of the machine is provided.

  In this embodiment, when defining the front-rear direction of the aircraft, it is defined along the aircraft advancing direction in the working state, and when defining the left-right direction of the aircraft, the left-right direction is defined as viewed in the aircraft advancing direction. . That is, the direction indicated by reference numeral (F) in FIGS. 1 and 2 is the front side of the body, and the direction indicated by reference numeral (B) in FIGS. 1 and 2 is the rear side of the body. The direction indicated by reference sign (L) in FIG. 2 is the left side of the aircraft, and the direction indicated by reference sign (R) in FIG.

  The mowing unit 2 is caused by a weeding tool 10 for weeding a planted grain culm stock to be harvested, and a plurality of triggering devices 11 for causing the weeded planted culm in a vertical position. A clipper-type mowing device 12 for cutting the planted cereal stock, and a vertical transport for feeding the mowing cereal to the threshing device 5 while changing the posture so as to gradually fall from the vertical posture. The apparatus 13 etc. are provided.

  The threshing device 5 feeds the tip side to the handling chamber 14 for threshing treatment while holding the stock source side of the supplied harvested cereal rice cake by the threshing feed chain 5a and the holding rail 5b and transporting it toward the rear of the machine body. . As shown in FIG. 2, a handling cylinder 15 that is driven to rotate around the front and rear axis, a circular receiving net (not shown) and the like in the front-rear direction along the outer periphery on the lower side, etc. In addition, the head side of the harvested cereal culm is handled and processed by the handling cylinder 15 and the receiving net.

  The processed product after the threshing process is sorted into grains, straw scraps, and the like by a lower sorting unit (not shown). The grain is unloaded from the right lateral side of the threshing device 5 by a first object conveying screw (not shown), and then is lifted by the lifting conveyor 16 and transferred into the grain tank 6. The grain tank 6 stores the grain fed from the threshing device 5. Thereafter, the grains stored in the grain tank 6 are carried out to the outside by the unloader 9.

  As shown in FIGS. 1 and 2, the unloader 9 is a vertical feed screw conveyor 9 </ b> A that vertically feeds and conveys the grain conveyed by a bottom screw provided at the bottom of the grain tank 6 in a front-back orientation. And a lateral feed screw conveyor 9B that is connected to the upper portion of the longitudinal feed screw conveyor 9A and that feeds the grain laterally to the discharge port 17 at the tip.

[Opening and closing structure around the driving section]
As shown in FIG. 2, the driving unit 4 includes a driving seat 7, a front panel 18 positioned in front of the driving seat 7, a floor 19 positioned between the front panel 18 and the driving seat 7, and the driving seat 7. On the other hand, a side panel 20 or the like located on the inner side (left side) in the left-right direction of the machine body is provided. The upper side of the operation unit 4 is covered with the cabin 3. The driver's seat 7 is supported by an upper part of an engine bonnet 22 that covers an upper side of a diesel-type engine 21 provided in the driving unit 8.

  As shown in FIG. 3, the engine bonnet 22 is connected to the front plate portion 22 a located on the front side of the fuselage of the engine 21, the upper surface portion 22 b located on the upper side of the fuselage of the engine 21, and the rear side of the upper face portion 22 b. 7 is provided with an air supply chamber constituting portion 22c formed at the rear of the engine 7 to form an engine room.

  As shown in FIGS. 2 and 3, the engine bonnet 22, the front panel 18, the side panel 20, the floor 19, the driver's seat 7, the cabin 3, and the like are integrally connected to form a driver part structure 23. The driving unit structure 23 is supported by the body frame 24 so as to be rotatable around the vertical axis Y1 on the left rear side of the driving seat 7.

Next, the rotation support structure of the operation part structure 23 will be described.
As shown in FIGS. 4 and 5, the machine body frame 24 is provided with a cylindrical vertical frame body 25 extending in the vertical direction at the left rear side portion of the operation unit 4. On the other hand, a rotation fulcrum member 27 extending in the up-down direction is integrally connected to the left side portion of the back portion of the operation unit structure 23 via the arm portion 26. A rotation fulcrum member 27 is mounted on a support shaft 28 provided at the upper end of the vertically oriented frame body 25 so as to be fitted from above, and is supported rotatably around the vertical axis Y1. An upper end portion of the rotation fulcrum member 27 is rotatably supported by a bracket 29 connected to the lateral wall of the threshing device 5.

  The driving unit structure 23 rotates around the vertical axis Y1, and as shown by a solid line in FIG. 2, the retraction posture located on the inward side of the vehicle body so as to cover the upper side of the driving unit 8 and FIG. As shown by the two-dot chain line, the posture can be switched over the overhanging posture projecting outward from the machine body so as to open the upper portion of the driving portion 8. By switching the driving unit structure 23 to the overhanging posture, the upper part of the driving unit 8 is largely opened, so that the maintenance operation of the driving unit 8 can be easily performed.

  The grain tank 6 is supported by the body frame 24 so as to be swingable around a vertical axis Y2 which is a rotational axis of the vertical feed screw conveyor 9A. The grain tank 6 swings around the vertical axis Y2 to maintain the normal working position (the state indicated by the solid line in FIG. 2) retreating toward the aircraft body side and the posture of projecting to the vehicle body laterally outer side. The position can be changed over the position (state indicated by the phantom line in FIG. 2). When switching the operation part structure 23 to the overhanging posture, it is necessary to change the position of the grain tank 6 to the maintenance position.

[Configuration around the engine]
As shown in FIGS. 2 to 5, the prime mover 8 is provided with an engine 21, and the engine 21 is mounted in a mounting posture in which the crankshaft direction is the lateral direction of the machine body, via a rubber mount mechanism 30 as an elastic support. Is supported by the body frame 24.

  As an exhaust gas treatment device that purifies the exhaust gas of the engine 21, a first exhaust gas treatment device 31 that reduces particulate matter contained in the exhaust gas of the engine 21, and after being treated by the first exhaust gas treatment device 31 And a second exhaust gas treatment device 32 for reducing nitrogen oxides contained in the exhaust gas.

  The first exhaust gas treatment device 31 includes a diesel particulate filter (DPF) (not shown), which is a known technique for collecting diesel particulate contained in the exhaust gas, and reduces diesel particulate when the exhaust gas passes through.

The second exhaust gas treatment device 32 performs exhaust gas purification processing using selective catalyst reduction (SCR), which is a known technique. Specifically, 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 oxide (NOx) contained in the exhaust gas are chemically reacted. The nitrogen oxides contained in the exhaust gas are reduced by reducing to nitrogen (N ₂ ) and water (H ₂ O).

  The exhaust gas discharged from the engine 21 is subjected to purification treatment for reducing diesel particulates in the first exhaust gas treatment device 31, and then purified to reduce nitrogen oxides contained in the exhaust gas in the second exhaust gas treatment device 32. After the treatment, the exhaust gas after the purification treatment is exhausted to the outside of the machine body through the exhaust pipe 33.

  An exhaust pipe 33 is provided for exhausting the exhaust gas discharged from the exhaust gas outlet portion on the upper side of the main body processing unit 32B in the second exhaust gas processing device 32 to the outside.

  The exhaust pipe 33 is disposed between the threshing device 5 and the grain tank 6 so that the exhaust port 42 serving as a discharge port is located above the upper end of the threshing device 5. It is extended to the upper end side location of the threshing device 5 in a rearward rising inclination posture. An exhaust port 42 is formed at the upper end of the exhaust pipe 33, and the upper end of the exhaust pipe 33 extends in a state of bending toward the threshing device 5.

  The exhaust pipe 33 includes an exhaust gas outflow pipe 36 extending from the exhaust gas outlet 35, an intermediate exhaust pipe 37 connected to the exhaust gas outflow pipe 36, and a terminal side exhaust pipe 38 connected to the intermediate exhaust pipe 37. The intermediate exhaust pipe 37 extends from the outlet portion of the exhaust gas outflow pipe 36 to a position corresponding to the upper end portion of the threshing device 5 in a rearwardly inclined posture. The terminal side exhaust pipe 38 is extended toward the threshing device 5 in a state of being curved with respect to the intermediate exhaust pipe 37.

  The intermediate exhaust pipe 37 is covered with a cover member 39 having a substantially U-shaped cross section. The cover member 39 is bolted to the outer peripheral surface of the intermediate exhaust pipe 37 via a bracket. The lower end portion of the cover member 39 is provided so as to be close to a heat shield cover 41 (described later) so as to overlap vertically.

  The end side exhaust pipe 38 is configured by a cylindrical body having a substantially circular cross section, and extends so as to bend toward the threshing device 5 as it goes upward in the longitudinal direction of the machine body. And the exhaust port 42 which discharges | emits waste gas in the air is formed in the end surface of the front-end | tip part of the termination | terminus side exhaust pipe 38. FIG.

[Support structure of exhaust gas treatment equipment]
As shown in FIGS. 3 and 5, the first exhaust gas treatment device 31 is arranged inside the engine bonnet 22. In other words, in a state of being biased to the left side of the fuselage with respect to the driver's seat 7, the longitudinal direction is arranged below the side panel 20 and on the inner side of the fuselage in the lateral direction of the fuselage in the upper part of the engine 21. . The first exhaust gas treatment device 31 is integrally connected to and supported by the engine 21 by a pair of support portions 43 and 44 on both the front and rear sides of the machine body.

  An exhaust gas inlet 45 is provided at a lower portion of the first exhaust gas treatment device 31 on the front side of the machine body, and the exhaust gas inlet 45 is connected to the engine 21. As shown in FIG. 5, an exhaust gas outlet 47 is provided at the right side of the first exhaust gas treatment device 31 on the rear side of the machine body.

  As shown in FIG. 5, the second exhaust gas treatment device 32 is provided outside the engine bonnet 22 and located on the rear side of the vehicle body of the operation unit 4 in a plan view. The second exhaust gas treatment device 32 is disposed in a state of being overlapped with the grain tank 6 in a plan view while being positioned below the front part of the grain tank 6. Although not shown in the figure, the grain tank 6 is formed in a constricted shape in a front view, and a recessed portion 48 (see FIG. 3) is formed. The second exhaust gas treatment device 32 is provided in a state of entering the recessed portion 48.

  As shown in FIGS. 3 and 5, the second exhaust gas treatment device 32 is supplied from the dosing unit 32 </ b> A in which urea water is injected and supplied to the exhaust gas supplied from the first exhaust gas treatment device 31. And a main body processing unit 32B that performs exhaust gas reduction processing.

  The dosing part 32A has a cylindrical shape, and the main body processing part 32B is formed in a cylindrical shape having a larger diameter than the dosing part 32A. The dosing unit 32A and the main body processing unit 32B are integrally connected to each other at the lower portion thereof, and communicate with each other so that the exhaust gas supplied with urea water by the dosing unit 32A is supplied to the main body processing unit 32B. The main body processing unit 32B is arranged such that the direction along the cylindrical central axis is in the vertical direction of the machine body. The cylindrical dosing unit 32A is located on the right side of the machine body relative to the main body processing unit 32B, and is arranged in a state where the direction along the central axis of the cylindrical shape is along the vertical direction of the machine body in a state of being aligned in parallel with the main body processing unit 32B. Has been.

  As shown in FIG. 4, the exhaust gas outlet portion of the first exhaust gas treatment device 31 and the exhaust gas supply portion of the second exhaust gas treatment device 32 are connected in communication via a communication connection pipe 53 as a connection member. The communication connecting pipe 53 is flange-connected to the exhaust gas outlet portion of the first exhaust gas treatment device 31 and is flange-connected to the exhaust gas supply portion of the second exhaust gas treatment device 32.

  The communication connection pipe 53 includes a bellows-shaped bellows pipe 53A having flexibility, and is configured to be extendable and contractable in the longitudinal direction. The expansion and contraction of the bellows tube 53A can absorb the vibration of the engine 21 supported by the body frame 24 through the rubber mount, and the vibration of the engine 21 is prevented from being transmitted to the second exhaust gas treatment device 32. The second exhaust gas treatment device 32 can be supported in a stable state.

  As shown in FIG. 4, a urea water tank 54 that stores urea water as a reducing agent supplied to the second exhaust gas treatment device 32 is provided on the lower side of the floor portion 19 of the operation unit 4. The urea water tank 54 is supported by the body frame 24. The urea water in the urea water tank 54 is configured to be supplied to the second exhaust gas treatment device 32 through a pipe 56 by a pump 55. The remaining urea water that is not injected is returned to the urea water tank 54.

Next, the support structure of the second exhaust gas treatment device 32 will be described.
The second exhaust gas treatment device 32 is supported by a vertically oriented frame body 25 that rotatably supports the operation unit structure 23. As shown in FIG. 7, the vertically oriented frame body 25 includes an upper support portion 57 located on the upper side and a lower support portion 58 located on the lower side. The second exhaust gas treatment device 32 includes an upper side supported portion 59 that is placed and supported by the upper support portion 57, and a lower side supported portion that is supported in a state where the lower support portion 58 is sandwiched and applied from both lateral outer sides. 60.

  The upper support portion 57 includes a connection bracket 61 integrally connected to the upper side of the vertical frame body 25, and a vertical plate portion 62 integrally connected to the upper portion of the connection bracket 61. The connection bracket 61 is formed in a substantially L-shaped cross section in a side view and extends in the lateral direction.

  As shown in FIG. 7, the vertically oriented plate portion 62 includes a substantially U-shaped plate portion main body 63 in a plan view, and a substantially U-shaped frame portion forming body 64 coupled to the front side of the plate portion main body 63. A pair of reinforcing plates 65 connected to the rear side of the plate portion main body 63, two welding bolts 66 integrally connected to a connecting portion between the plate portion main body 63 and the frame portion forming body 64, and a plate portion And a welding nut 67 connected to the back side of the lateral one side of the main body 63. The two welding bolts 66 are provided so as to protrude upward from the upper end edge of the plate body 63. Bolt insertion holes 68 are formed in the lateral side portion of the plate body 63 provided with the welding nut 67.

  As shown in FIGS. 6 and 7, the upper side supported portion 59 includes an upper flange portion 50 provided on the outer peripheral portion on the upper side of the main body processing portion 32 </ b> B, and a bolt in a position fixed state below the upper flange portion 50. And an upper connecting member 69 connected thereto. The upper flange portion 50 is integrally provided on the outer peripheral portion of the main body processing portion 32B so as to protrude radially outward. The upper connecting member 69 is provided on the mounting support portion 70 in a horizontal posture that is bolt-connected in a state of being applied to the upper flange portion 50 from the lower side, and on the lower surface of the lateral one side end portion of the mounting support portion 70. And a lateral support 71 in a vertically oriented posture.

  The mounting support portion 70 is formed with a bolt hole 73 through which the connecting bolt Bo for the upper flange portion 50 is inserted, two insertion holes 74 through which the two welding bolts 66 are inserted, and the like. The lateral support portion 71 is formed with one insertion hole 75 through which the connecting bolt Bo is inserted.

  The lower support portion 58 includes a connection bracket 76 that is integrally connected to the lower side of the vertically oriented frame body 25, and a side plate 77 that is integrally connected to both end portions of the connection bracket 76. The connecting bracket 76 is formed in a substantially U-shaped cross section in a side view and extends in the lateral direction. The side plates 77 are connected to the inner side so as to block the portions surrounded by a substantially U shape at both end portions of the connection bracket 76. Each of the pair of side plates 77 is formed with a bolt hole 78 through which the bolt Bo is inserted sideways.

  As shown in FIGS. 6 and 7, the lower-side supported portion 60 is in a position fixed state on the lower flange portion 80 provided on the outer peripheral portion on the lower side of the main body processing portion 32 </ b> B and on the lower side of the lower flange portion 80. And a lower connecting member 81 connected by bolts. The lower flange portion 80 is integrally provided on the outer peripheral portion of the main body processing portion 32B so as to protrude radially outward.

  The lower connecting member 81 includes a strip-like main body portion 82 extending in the lateral direction, and a pair of vertically connecting portions 83 integrally provided in a state of protruding forward on both longitudinal sides of the main body portion 82. And a pair of laterally connecting portions 84 that are integrally provided so as to extend upward and backward from both longitudinal sides of the main body portion 82. In the lower connecting member 81, the pair of lateral connecting portions 84 are bolt-connected in a state where the lower connecting member 81 is applied to the lower flange portion 80 from the lower side. Each of the pair of vertically connecting portions 83 is formed with one insertion hole 85 through which the connecting bolt Bo is inserted.

  The upper side supported portion 59 is supported by the upper support portion 57 of the vertically oriented frame body 25 in a state where the upper connecting member 69 is connected to the lower side of the upper flange portion 50 in a fixed state. The mounting support portion 70 in the upper side supported portion 59 is mounted and supported on the upper end portion of the vertical plate portion 62, and the lateral support portion 71 is laterally supported on the horizontal guide surface of the vertical plate portion 62. Connected in the applied state. The upper end portion of the vertical plate portion 62 forms a placement portion that receives and supports the placement support portion 70 in a horizontal posture.

  That is, the two welding bolts 66 are inserted through the two insertion holes 74 formed in the mounting support part 70, and the welding bolt 66 and the nut 86 to be attached are fastened and connected. Further, the bolt Bo to be mounted from the outside is inserted through the insertion hole 75 formed in the lateral support portion 71 and the bolt insertion hole 68 formed in the lateral side portion of the plate body 63 and fastened by the welding nut 67. Connected. The placement support part 70 is connected to the side wall part of the threshing device 5 via the support bracket 87.

  The lower-side supported portion 60 is configured such that the pair of side plates 77 of the lower support portion 58 is seen from both laterally outer sides by a pair of vertically-oriented connecting portions 83 in a state where the lower connecting member 81 is fixedly connected to the lower flange portion 80. In a state of being sandwiched and applied, they are connected to the lower support portion 58 by bolting them. That is, the bolt Bo that is mounted from the laterally outer side of the vertical connection portion 83 is inserted through the insertion hole 85 formed in the vertical connection portion 83 and the bolt hole 78 formed in the side plate 77, so that the bolt Bo Fasten a nut (not shown).

  Then, as shown in FIG. 7, two insertion holes 74 formed in the mounting support portion 70, an insertion hole 75 formed in the lateral support portion 71, and a pair of vertical connection portions 83 are formed. Each of the two insertion holes 85 is formed as a long elongated hole N extending horizontally along the front-rear direction. The five insertion holes 74, 75, 85, which are these long holes N, are places where the second exhaust gas treatment device 32 and the vertically oriented frame body 25 are connected by a shaft member J (bolts 66, Bo) that is inserted therethrough. It is. By changing the position of the shaft member J within the range of the long hole N at these five locations, it is possible to change and adjust the relative position along the longitudinal direction of the second exhaust gas treatment device 32 with respect to the longitudinal frame body 25. It is.

  Therefore, the support position of the second exhaust gas treatment device 32 with respect to the body frame 24 is changed and adjusted by the connection structure having the long holes and the bolts 66 and Bo as the shaft members J through which the long holes are inserted. A possible position adjusting mechanism T is configured. The second exhaust gas treatment device 32 is supported by the vertical frame body 25, that is, the machine body frame 24 via the position adjustment mechanism T in each of the upper support portion 57 and the lower support portion 58 provided in the vertical frame body 25. Has been.

[Heat shield cover]
As shown in FIGS. 3 and 8, a heat shield cover 41 is provided between the grain tank 6 and the second exhaust gas treatment device 32 to shield the heat of the second exhaust gas treatment device 32. The heat shield cover 41 is provided in a state of covering the upper side portion, the portion corresponding to the side opposite to the threshing device 5, and the portion corresponding to the rear side portion, around the second exhaust gas treatment device 32. It has been.

  As shown in FIG. 8, the upper surface 90 that covers the portion of the heat shield cover 41 that faces the grain tank 6 is arranged on the threshing device 5 side so as to follow the side surface of the inclined position of the recessed portion 48 in the grain tank 6. It is provided in an inclined posture that becomes higher as it goes. By making the upper surface 90 in an inclined posture in this way, the space above the second exhaust gas treatment device 32 can be widened, and the heat generated in the second exhaust gas treatment device 32 spreads in a narrow space. It is easy to dissipate heat.

  An opening 91 for inspection that is largely open is formed in the upper surface 90 of the heat shield cover 41 in the inclined posture. This opening 91 is covered with a lid 92 that can be opened and closed. The lid 92 is received and locked at the lower end by a receiving portion 93 formed at a lower portion of the upper surface 90, and the upper portion is placed at an upper portion of the upper surface 90 by fastening a butterfly bolt 94. It is connected. At the time of inspection, the lid 92 can be removed by loosening the butterfly bolt 94. Locking portions 95 for the operator to hold by hand are formed on the left and right sides of the lid 92.

  As shown in FIGS. 8 and 10, a notch 97 through which the exhaust pipe 33 passes is formed at an upper portion of the rear vertical surface 96 of the heat shield cover 41. A porous member 99 as a ventilation part is provided on an inner back surface 98 (corresponding to a side surface opposite to the threshing device 5 side) of the heat shield cover 41 that covers a portion facing the grain tank 6. The porous member 99 is formed of a net. The porous member 99 is not limited to the net body, and may be a porous plate body having a large number of holes.

  A recessed portion 100 that is recessed toward the threshing device 5 side is formed on the lower side of the inner front surface of the machine body. By forming the recessed portion 100, a working space for the operator to insert his / her hand into the driving portion 8 is secured in a state where the grain tank 6 is switched to the overhanging posture.

  The portion where the cover member 39 covering the intermediate exhaust pipe 37 of the exhaust pipe and the heat shield cover 41 are close to each other is separated in order to block heat transfer, but dust enters the inside through a gap between them. It has a structure that prevents this.

  If it demonstrates, the notch 97 formed in the rear side vertical surface 96 of the thermal insulation cover 41 will be in the state open | released largely by substantially trapezoid shape. On the other hand, the lower end portion of the cover member 39 that covers the exhaust pipe 33 is formed in a substantially trapezoidal shape along the inner edge portion of the notch 97. The inner edge 97a of the notch 97 and the proximal end edge 39a of the cover member 39 are disposed in proximity to each other.

  As shown in FIGS. 9 and 10, a lateral flange 101 having a substantially L-shaped cross section is formed on the inner edge 97 a of the notch 97 so as to protrude laterally outward. Of the inner edge 97a of the trapezoidal notch 97, the laterally facing flange 101 is formed on each of an inclined upper edge 97a1 and a vertically extending intermediate edge 97a2 connected to the upper edge 97a1. .

  A vertical hook 102 having a substantially L-shaped cross section is formed at a position corresponding to the horizontal hook 101 on the proximal end edge 39 a of the cover member 39. The vertical flange portion 102 includes an upper end edge portion 39a1 formed at a position corresponding to the upper edge portion 97a1 of the notch 97 in the proximal end side edge 39a of the cover member 39, and an intermediate edge portion of the notch 97. It is formed with each of the intermediate side edges 39a2 formed at positions corresponding to 97a2.

  The horizontal flange 101 can prevent dust from entering the gap between the heat shield cover 41 and the cover member 39 from the upper side, and the vertical flange 102 in the inclined posture corresponding to the upper edge 97a1. It is guided and discharged downward. Even if dust falls on the upper side of the cover member 39 and is guided to the heat shield cover 41 side, it is received by the vertical flange 102 and discharged downward.

[Another embodiment]
(1) In the above embodiment, the first exhaust gas treatment device 31 is provided in a state of being integrally connected to the engine 21, and the second exhaust gas treatment device 32 is configured to be positionally adjustable with respect to the body frame 24. Instead of such a configuration, a configuration in which the engine 21 and the first exhaust gas treatment device 31 are relatively moved, and a configuration in which the first exhaust gas treatment device 31 and the second exhaust gas treatment device 32 are integrally connected. Also good. In this configuration, the first exhaust gas treatment device 31 may be provided so that its position can be changed with respect to the body frame 24. Further, the first exhaust gas treatment device 31 and the second exhaust gas treatment device 32 may be configured to move relative to the engine 21. In this configuration, the first exhaust gas treatment device 31 and the second exhaust gas treatment device 32 may be provided so that their positions can be changed with respect to the body frame 24, respectively.

(2) In the above-described embodiment, the position adjustment mechanism T is configured to be able to change and adjust the support position in the horizontal direction. However, the position adjustment mechanism T may be configured to be able to change and adjust in different directions such as a vertical direction or an oblique direction.

(3) In the above embodiment, the exhaust gas treatment device is configured to be supported by the vertically oriented frame body 25 via the position adjustment mechanism T in each of the upper support portion 57 and the lower support portion 58. Instead, it may be configured to be supported at one location in the vertical direction, or may be configured to be supported at three or more locations.

(4) In the above embodiment, the exhaust gas treatment apparatus is supported in a state where the upper side supported portion 59 placed and supported by the upper support portion 57 and the lower support portion 58 are sandwiched and applied from both lateral sides. The lower side supported portion 60 is configured to be provided, but instead of this configuration, the upper side supported portion that is supported in a state where the upper support portion 57 is sandwiched and applied from both lateral sides, and the lower support portion 58 is provided. It is good also as a structure provided with the lower side supported part mounted and supported by.

(5) In the above embodiment, the position adjusting mechanism T is configured to include the shaft member J and the long hole N. However, instead of this configuration, for example, a structure that is moved by a screw feed type moving mechanism or an actuator. Various configurations can be used.

  The present invention can be applied not only to a self-removing combine but also to a normal combine.

21 Engine 24 Machine frame 25 Vertical frame 31 First exhaust gas treatment device (exhaust gas treatment device)
32 Second exhaust gas treatment device (exhaust gas treatment device)
53 communication connection pipe 57 upper support part 58 lower support part 59 upper side supported part 60 lower side supported part 70 mounting support part 71 lateral support part J shaft member N long hole T position adjustment mechanism

Claims (7)

An engine supported by the fuselage frame;
An exhaust gas treatment device that is supported by the body frame and is connected to the engine via a communication connecting pipe to purify exhaust gas from the engine;
A combiner comprising: a position adjustment mechanism capable of changing and adjusting a support position of the exhaust gas treatment device with respect to the machine frame.   The combine according to claim 1, wherein the position adjusting mechanism is capable of changing and adjusting the support position in a horizontal direction. The machine body frame is provided with a vertically oriented frame body extending vertically.
The vertical frame body is provided with an upper support portion located on the upper side and a lower support portion located on the lower side,
The combine according to claim 1 or 2, wherein the exhaust gas treatment device is supported by the vertically oriented frame body via the position adjusting mechanism in each of the upper support portion and the lower support portion.   The exhaust gas treatment apparatus includes an upper-side supported portion that is placed and supported on the upper support portion, and a lower-side supported portion that is supported in a state where the lower support portion is sandwiched and applied from both lateral outer sides. The combine according to claim 3.   The upper support portion is placed on and supported by the placement portion of the upper support portion, and the side supported by the lateral support surface of the upper support portion from the lateral outer side. The combine according to claim 4, further comprising a side support portion.   6. The position adjustment mechanism includes a shaft member extending in a direction intersecting with the position change direction, and a long hole through which the shaft member is inserted and extends along the position change direction. Combine according to Item 1. As the exhaust gas treatment device, a first exhaust gas treatment device that purifies exhaust gas from the engine, and a second exhaust gas treatment device that purifies exhaust gas after being processed by the first exhaust gas treatment device, are provided.
The said position adjustment mechanism can change and adjust the support position with respect to the said body frame of at least any one of the said 1st exhaust gas processing apparatus and the said 2nd exhaust gas processing apparatus. Combine as described.

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