WO2015033480A1

WO2015033480A1 - Engine device to be mounted on working machine

Info

Publication number: WO2015033480A1
Application number: PCT/JP2013/074914
Authority: WO
Inventors: 義史小西
Original assignee: ヤンマー株式会社
Priority date: 2013-09-05
Filing date: 2013-09-13
Publication date: 2015-03-12
Also published as: CN105518268A; JP2015052274A; KR20160052529A

Abstract

The present invention addresses the problem of providing an engine device to be mounted on a working machine, said engine device being constructed such that a support structure for multiple or a single exhaust gas purification case (75, 151) and the like can be simplified, and the multiple or single exhaust gas purification case (75, 151) can be easily attached to a working vehicle such as an agricultural machine or a construction machine. In this engine device to be mounted on a working machine, multiple or a single exhaust gas purification case (75, 151) for treating the exhaust gas of a diesel engine (14) is provided, and an exhaust gas inlet port of the exhaust gas purification case (75, 151) is connected to an exhaust pipe (119) of the diesel engine (14). The engine device is constructed such that an engine compartment frame (91) is provided on a traveling machine body (1), an engine compartment (97) is formed by the engine compartment frame (91), and the diesel engine (14) is installed inside the engine compartment (97), and is equipped with an exhaust gas purification unit frame (114) that secures the multiple or single exhaust gas purification case (75, 151) as one unit, said exhaust gas purification unit frame (114) being detachably mounted either on the diesel engine (14) or on the engine compartment frame (91).

Description

Engine equipment for work equipment

The present invention relates to a work vehicle such as an agricultural machine (combine, tractor) or a construction machine (bulldozer, hydraulic excavator, loader) equipped with an engine, and more specifically, particulate matter (soot, contained in exhaust gas). The present invention relates to an engine device mounted on a work machine provided with an exhaust gas purification device (exhaust gas purification case) that removes particulate oxide or nitrogen oxides (NOx) contained in the exhaust gas.

Conventionally, a combiner as a work machine includes a traveling machine body equipped with an engine, and is configured such that a pair of left and right traveling crawlers are mounted on the traveling machine body, and the pair of left and right traveling crawlers are driven and controlled so as to move in a field. ing. In addition, the combine cuts the stock of uncut cereal planted in the field with a cutting blade device, conveys the cereal to a threshing device with a cereal conveying device as a cereal conveying means, and The cereal is threshed and the grains are collected. Conventionally, an exhaust gas purification device (exhaust gas purification case) for purifying exhaust gas is disposed on the upper surface of the engine, and is configured to exhaust exhaust gas from the engine toward the exhaust gas purification device (for example, Patent Document 1).

JP 2010-209913 A

The prior art includes an exhaust gas purification case for removing particulate matter (soot, particulates) contained in the exhaust gas, and an exhaust gas purification case for removing nitrogen oxides (NOx) contained in the exhaust gas. In the structure where the engine is installed, it is necessary to secure an installation space for the engine and a plurality of or a single exhaust gas purification case in the engine room, and the volume of the engine room or the exhaust gas purification device (exhaust gas purification case) Are mutually limited, and there is a problem that a support structure for a plurality of or a single exhaust gas purification case cannot be simplified. In addition, a structure that installs an exhaust gas purification device (exhaust gas purification case) on a traveling machine that is located away from the engine, such as a truck, can easily secure an installation space for the exhaust gas purification device. There is a problem that the exhaust gas temperature in the apparatus is lowered to a predetermined temperature or less and the self-regeneration capability is easily reduced.

Therefore, the present invention intends to provide an engine device mounted on a work machine that has been improved by examining these current conditions.

In order to achieve the above object, an engine device for mounting a working machine according to claim 1 includes a plurality or a single exhaust gas purification case for processing exhaust gas of a diesel engine, and the exhaust pipe of the diesel engine includes the In the engine device for working equipment to which the exhaust gas intake port of the exhaust gas purification case is connected, a plurality of support bracket bodies project radially on the same circumference of the outer surface of the exhaust gas purification case. is there.

According to a second aspect of the present invention, in the engine device for mounting a work machine according to the first aspect, the exhaust gas purification case is provided in a vertical position, and the exhaust gas intake port is provided at a lower end side of the exhaust gas purification case. And an exhaust gas discharge port is disposed on the upper end side of the exhaust gas purification case.

According to a third aspect of the present invention, in the engine device for mounting a work machine according to the first aspect, a support bracket body that restricts the movement of the exhaust gas purification case in the front-rear direction, and the left-right direction of the exhaust gas purification case A support bracket body that restricts the movement of the exhaust gas, and supports the exhaust gas purification case in a vertical position through the support bracket bodies on a machine frame in which the diesel engine is disposed or a machine frame of an adjacent working unit It is comprised as follows. *

According to a fourth aspect of the present invention, in the engine device for mounting a work machine according to the first aspect, the exhaust gas purification case is provided in a vertical position in which the exhaust gas moves from the lower end side toward the upper end side, A front support bracket and a side support bracket as a plurality of support bracket bodies are arranged at substantially the same height position on the outer side surface of the exhaust gas purification case, and the front support bracket mainly arranges the front and rear of the exhaust gas purification case. The movement of the direction is restricted, and the movement of the exhaust gas purification case mainly in the left-right direction can be restricted by the side support bracket.

According to a fifth aspect of the present invention, there is provided the working machine-mounted engine device according to the first aspect, wherein the traveling machine body on which the diesel engine is mounted, a reaping device for reaping grain culm in a field, and the harvested culm. A threshing device for threshing and a grain tank for taking out the grains are provided, an engine room frame is erected on the traveling machine body, an engine room is formed by the engine room frame, and the diesel engine is disposed in the engine room. The exhaust gas purification case is disposed in a vertical position on the outer side of the engine room frame via the support bracket body, and a sensor bracket is disposed on the upper end side of the outer surface of the exhaust gas purification case. The distal end side of the sensor bracket fixed to the base end side and projecting outward from the exhaust gas purification case It is obtained by placing a differential pressure sensor of the exhaust gas purification case.

According to a sixth aspect of the present invention, in the engine device for mounting on a work machine according to the first aspect, a plurality of support bracket bodies are radially provided in the middle of the vertical width of the outer surface of the exhaust gas purification case. In addition, a drain port is provided on the lower end side of the outer surface of the exhaust gas purification case.

According to a seventh aspect of the present invention, in the engine device for mounting on a working machine according to the first aspect, a plurality of support bracket bodies project radially from the middle of the vertical width of the outer surface of the exhaust gas purification case. At the same time, a suspension metal is provided on the upper end side of the outer surface of the exhaust gas purification case.

The invention according to claim 8 is the engine device for mounting work equipment according to claim 1, wherein the traveling machine body on which the engine is mounted, the reaping device for harvesting the culm in the field, and the threshing of the harvested culm. A threshing device and a grain tank for taking out grains are provided, an engine room frame is erected on the traveling machine body, an engine room is formed by the engine room frame, and the engine is arranged in the engine room. The exhaust gas purification case is disposed in a vertical position outside the engine room frame, and the exhaust gas of the engine is introduced to the lower end side of the exhaust gas purification case, while the exhaust gas purification case is disposed on the upper end side of the exhaust gas purification case. The tail pipe is configured to be connected.

According to a ninth aspect of the present invention, in the engine device for mounting a working machine according to the first aspect, an engine room frame is provided on a traveling machine body, an engine room is formed by the engine room frame, and the diesel engine is formed in the engine room. An engine is disposed, and includes an exhaust gas purification unit frame configured as a unit by fixing the plurality or a single exhaust gas purification case, and the exhaust gas purification unit is provided in the diesel engine or the engine room frame. A frame is detachably arranged.

According to the first aspect of the present invention, a plurality or a single exhaust gas purification case for treating exhaust gas of a diesel engine is provided, and an exhaust gas intake port of the exhaust gas purification case is connected to an exhaust pipe of the diesel engine. In the working machine mounting engine device, a plurality of support bracket bodies project radially on the same circumference of the outer surface of the exhaust gas purification case. The exhaust gas purification case can be connected to a chassis frame of various working machines in a multifaceted (multidirectional) manner, and the seismic strength of the exhaust gas purification case can be improved against mechanical vibrations. The exhaust gas purification case can be supported with high rigidity on the chassis frame or the like spaced apart from the diesel engine. The support structure of the exhaust gas purification case can be simplified and can be configured at low cost.

According to the second aspect of the present invention, the exhaust gas purification case is provided in a vertical orientation, the exhaust gas intake port is disposed on the lower end side of the exhaust gas purification case, and the exhaust gas is disposed on the upper end side of the exhaust gas purification case. Since the gas discharge port is disposed, the plane installation space of the exhaust gas purification case can be formed narrower than the horizontal support structure. The exhaust gas purification case can be compactly arranged at a position close to the exhaust manifold of the diesel engine and higher than the exhaust manifold. The layout of the diesel engine and peripheral devices (such as the exhaust gas purification case) can be easily designed. In addition, operations such as assembling or removing the exhaust gas purification case can be easily performed in a state where the diesel engine is installed in various working machines, and the workability of attaching and detaching the exhaust gas purification case can be improved.

According to a third aspect of the present invention, the diesel engine includes a support bracket body that restricts movement of the exhaust gas purification case in the front-rear direction and a support bracket body that restricts movement of the exhaust gas purification case in the left-right direction. The exhaust gas purification case is configured such that the exhaust gas purification case is supported in a vertically installed posture via the support bracket bodies on the machine frame in which the engine is disposed or the machine frame of the adjacent working unit. The exhaust gas purification case can be arranged in a compact manner by utilizing the space formed between the diesel engine and the working part, while being able to improve the seismic resistance and to support with high rigidity.

According to the fourth aspect of the invention, the exhaust gas purification case is provided in a vertical position in which the exhaust gas moves from the lower end side toward the upper end side, and the substantially same height of the outer surface of the exhaust gas purification case is provided. The front support bracket and the side support bracket as a plurality of support bracket bodies are arranged at the position, and the front support bracket restricts the movement of the exhaust gas purification case mainly in the front-rear direction, and the side support bracket Since the movement of the exhaust gas purification case mainly restricts the movement in the left-right direction, the exhaust gas intake port is arranged on the lower end side of the exhaust gas purification case, and the upper end side of the exhaust gas purification case The exhaust gas purification case can be supported with high rigidity in a vertically installed posture in which the exhaust gas discharge port is disposed. Further, the exhaust gas purification case can be compactly arranged at a position close to the exhaust manifold of the diesel engine and higher than the exhaust manifold, and the diesel engine and peripheral devices (the exhaust gas purification case, etc.) Assembling workability can be improved.

According to the invention which concerns on Claim 5, the traveling body which mounts the said diesel engine, the reaping device which harvests the grain straw of a field, the threshing apparatus which threshs the harvested grain straw, and the grain tank which takes out grain An engine room frame is erected on the traveling machine body, an engine room is formed by the engine room frame, and the diesel engine is arranged in the engine room, and the engine room frame is disposed outside the engine room frame. The exhaust gas purification case is disposed in a vertical posture through a support bracket body, and the base end side of the sensor bracket is fixed to the upper end side of the outer surface of the exhaust gas purification case, and the exhaust gas purification case is separated from the exhaust gas purification case. The differential pressure sensor of the exhaust gas purification case is disposed on the front end side of the sensor bracket that protrudes outward. Therefore, it is not necessary to secure an installation space for the exhaust gas purification case in the engine room, and the engine room volume or the exhaust gas purification case volume is not limited, but is close to the engine. The exhaust gas purification case can be supported. In addition, the differential pressure sensor can be spaced apart from the high temperature portion of the exhaust gas purification case. The temperature effect of the exhaust gas purification case on the differential pressure sensor can be reduced, and the cost can be reduced. The electrical wiring for the differential pressure sensor or the like can also be simplified.

According to the invention of claim 6, a plurality of support bracket bodies project radially from the outer surface of the exhaust gas purification case in the middle of the vertical width, and the outer surface of the exhaust gas purification case. Since the drain port is provided on the lower end side, it is possible to improve the support rigidity of the exhaust gas purification case against mechanical vibrations, etc., while the condensed water generated in the exhaust gas purification case is removed from the drain. It can be easily discharged from the mouth, and the durability of the exhaust gas purification case can be improved.

According to the seventh aspect of the present invention, a plurality of support bracket bodies project radially from the outer surface of the exhaust gas purification case in the middle of the vertical width, and the outer surface of the exhaust gas purification case. Since the suspension metal is provided on the upper end side, the support rigidity of the exhaust gas purification case can be improved against mechanical vibration or the like. The exhaust gas purification case can be suspended and the work such as assembly or removal can be easily performed, and the attachment / detachment workability of the exhaust gas purification case can be improved.

According to the invention which concerns on Claim 8, It is provided with the traveling body which mounts an engine, the reaping device which harvests the grain straw of a field, the threshing apparatus which threshs the harvested grain straw, and the grain tank which takes out grain, An engine room frame is erected on the traveling machine body, an engine room is formed by the engine room frame, and the engine is disposed in the engine room, and the exhaust gas purification is provided outside the engine room frame. Since the case is arranged in a vertical orientation and exhaust gas of the engine is introduced to the lower end side of the exhaust gas purification case, a tail pipe is connected to the upper end side of the exhaust gas purification case. Therefore, it is not necessary to secure an installation space for the exhaust gas purification case in the engine room. Yet those gas purification case volume is not limited and can support the exhaust gas purifying case in close proximity to the engine. For example, it is possible to easily secure a soot installation space for the exhaust gas purification case between the engine room and an adjacent working unit (such as the threshing device or the grain tank). Further, the exhaust gas introduction side at the lower end side of the exhaust gas purification case in the vertical orientation can be connected to the exhaust manifold of the engine at the shortest distance, and the tail pipe is placed at a high position in an adjacent working part (such as the threshing device). The tail pipe support structure can be simplified.

According to the invention according to claim 9, an engine room frame is provided on a traveling machine body, an engine room is formed by the engine room frame, and the diesel engine is disposed in the engine room, An exhaust gas purification unit frame configured as a unit by adhering a single exhaust gas purification case is provided, and the exhaust gas purification unit frame is detachably disposed on the diesel engine or the engine room frame. Alternatively, the support structure of a single exhaust gas purification case can be simplified, and the plurality or single exhaust gas purification cases can be easily attached to and detached from a work vehicle such as an agricultural machine or a construction machine as a unit. Further, the plurality of or single exhaust gas purification cases are arranged in a compact manner close to the diesel engine, and the self-regeneration capability of the exhaust gas purification case can be easily secured, while the diesel engine is arranged The plural or single exhaust gas purification cases can be easily assembled inside or outside the engine room.

It is a left view of the combine for 6 thread cutting of 1st Embodiment of this invention. It is the same top view. It is the same right view. It is a back view perspective view of an exhaust-gas purification apparatus part. It is the same perspective view perspective view. It is the same plane explanatory drawing. FIG. 5 is an enlarged explanatory view of FIG. 4. It is a perspective view of an engine and an exhaust gas purification device. It is a left view of the combine for 6 thread cutting of 2nd Embodiment of this invention. It is the same top view. It is the same right view. It is a back view perspective view of an exhaust-gas purification apparatus part. It is the same perspective view perspective view. It is the same plane explanatory drawing. FIG. 12 is an enlarged explanatory view of FIG. 11. It is a perspective view of an engine and an exhaust gas purification device.

Hereinafter, a first embodiment embodying the present invention will be described with reference to the drawings. With reference to FIG. 1 to FIG. 3 as the first embodiment (FIGS. 9 to 11 of the second embodiment), the overall structure of the combine as a working machine on which the diesel engine is mounted will be described. In the following description, the left side in the forward direction of the traveling machine body 1 is simply referred to as the left side, and the right side in the forward direction is also simply referred to as the right side. As shown in FIGS. 1 to 3 (FIGS. 9 to 11), a traveling machine body 1 supported by a pair of left and right traveling crawlers 2 as traveling portions is provided. At the front part of the traveling machine body 1, a 6-row mowing device 3 that takes in while harvesting cereals is mounted by a single-acting lifting hydraulic cylinder 4 so as to be movable up and down around the mowing pivot fulcrum shaft 4 a. The A threshing device 5 having a feed chain 6 and a grain tank 7 for storing the grains taken out from the threshing device 5 are mounted on the traveling machine body 1 side by side. The threshing device 5 is disposed on the left side in the forward direction of the traveling machine body 1, and the grain tank 7 is disposed on the right side in the forward direction of the traveling machine body 1.

Further, a swivelable discharge auger 8 is provided at the rear part of the traveling machine body 1 so that the grains inside the grain tank 7 are discharged from the culling throw port 9 of the discharge auger 8 to a truck bed or a container. Has been. An operation cabin 10 is provided on the right side of the cutting device 3 and on the front side of the grain tank 7. A cabin rotation fulcrum shaft 10a is provided in the lower front portion of the driving cabin 10, and the lower portion of the front surface of the operation cabin 10 is pivotally supported on the traveling machine body 1 via the cabin rotation fulcrum shaft 10a. The driving cabin 10 is movably installed, and is configured to rotate the driving cabin 10 forward about the cabin rotation fulcrum shaft 10a.

In the driving cabin 10, a steering handle 11, a driving seat 12, a main transmission lever 15, an auxiliary transmission switch 16, and a work clutch lever 17 for turning on and off the threshing clutch and the cutting clutch are arranged. A diesel engine 14 as a power source is disposed in the traveling machine body 1 below the driver seat 12. The operation cabin 10 is provided with a step on which an operator gets on, a handle column provided with a steering handle 11, and a lever column provided with the

levers

15 and 17, the switch 16, and the like.

As shown in FIG. 1 (FIG. 9), left and right track frames 21 are arranged on the lower surface side of the traveling machine body 1. The track frame 21 includes a drive sprocket 22 that transmits the power of the engine 14 to the traveling crawler 2, a tension roller 23 that maintains the tension of the traveling crawler 2, and a plurality of track rollers that hold the ground side of the traveling crawler 2 in a grounded state. 24 and an intermediate roller 25 that holds the non-grounded side of the traveling crawler 2 are provided. The driving sprocket 22 supports the front side of the traveling crawler 2, the tension roller 23 supports the rear side of the traveling crawler 2, the track roller 24 supports the grounding side of the traveling crawler 2, and the intermediate roller 25 supports the non-traveling crawler 2. Support the ground side.

As shown in FIG. 1 and FIG. 2 (FIGS. 9 and 10), an uncut grain cereal planted on a farm field (cereal cocoon) is located below a cutting frame 51 connected to a cutting rotation fulcrum shaft 4a of the cutting apparatus 3. A clipper-type cutting blade device 52 is provided for cutting the stock. In front of the reaping frame 51, a stalk raising apparatus 53 for 6 stalks that raises an uncut cereal cultivated in the field is arranged. Between the culm pulling device 53 and the front end (feed start side) of the feed chain 6, a culm transporting device 54 that transports the chopped culm harvested by the cutting blade device 52 is arranged. In addition, in front of the lower part of the cereal habit raising device 53, a weeding body 55 corresponding to 6 strips for weeding the uncut cereal cedar is provided. While moving in the field, the reaping device 3 continuously cuts uncut cereal grains planted in the field.

Next, the structure of the threshing apparatus 5 will be described with reference to FIGS. 1 and 2 (FIGS. 9 and 11). As shown in FIG. 1 and FIG. 2, the threshing device 5 includes a handling cylinder 56 for threshing threshing, a rocking sorter 57 that sorts the cereals falling below the handling cylinder 56, and a tang fan 58. A processing cylinder 59 for reprocessing the threshing discharge taken out from the rear part of the cylinder 56 and a dust exhaust fan 60 for discharging dust at the rear part of the rocking sorter 57 are provided. In addition, the cereals conveyed by the culm conveying device 54 from the reaping device 3 are inherited by the feed chain 6, carried into the threshing device 5, and threshed by the handling cylinder 56.

As shown in FIG. 1 (FIG. 9), on the lower side of the rocking sorter 57, a first conveyor 61 for picking out the grain (the first thing) sorted by the rocking sorter 57, and a grain with a branch raft A second conveyor 62 for taking out second objects such as grains is provided. The rocking sorter 57 is configured such that the cereal grains leaked from the receiving net 67 stretched below the handling cylinder 56 are rocked and sorted (specific gravity sorting) by the feed pan 68 and the chaff sheave 69. . Grains that fall from the swing sorter 57 are removed by the sorting air from the tang fan 58 and fall to the conveyor 61 first. The grain taken out first from the conveyor 61 is carried into the grain tank 7 via the cereal conveyor 63 and collected in the grain tank 7.

Further, as shown in FIG. 1 (FIG. 9), the swing sorter 57 is configured to drop a second thing such as a grain with a branch infarction from the chaff sheave 69 onto the second conveyor 62 by swing sorting. . A sorting fan 71 for wind-selecting the second object that falls below the chaff sheave 69 is provided. As for the second thing that has fallen from the chaff sheave 69, the dust and swarf in the grain are removed by the sorting air from the sorting fan 71 and dropped onto the second conveyor 62. The terminal portion of the second conveyor 62 is connected to the upper surface side of the rear portion of the feed pan 68 via the reduction conveyor 66, and is configured to return the second product to the upper surface side of the swing sorting plate 67 and re-sort. is doing.

On the other hand, as shown in FIGS. 1 and 2 (FIGS. 9 and 11), an exhaust chain 64 and an exhaust cutter 65 are arranged on the rear end side (feed end side) of the feed chain 6. The waste passed through the feed chain 6 from the rear end side of the feed chain 6 (the straw from which the grain has been threshed) is discharged to the rear of the traveling machine body 1 in a long state, or the rear part of the threshing device 5 After being cut to an appropriate length by a waste cutter 65 provided at the front, the paper is discharged to the lower rear of the traveling machine body 1.

Next, referring to FIG. 4 to FIG. 8, in the exhaust gas of the diesel engine 14 as an exhaust gas purifying device 74 (diesel particulate filter: DPF, selective catalytic qualification: SCR) that can be continuously regenerated. First exhaust gas purification case 75 for removing particulate matter (PM) and its mounting structure, and second exhaust gas purification case 151 for removing nitrogen oxides (NOx) in exhaust gas of diesel engine 14 and its mounting structure Will be described. As shown in FIGS. 6 to 8, the exhaust gas purification device 74 introduces the exhaust gas of the first exhaust gas purification case 75 of the continuous regeneration type that introduces the exhaust gas of the diesel engine 14 and the first exhaust gas purification case 75. A second exhaust gas purification case 151 is provided. The first exhaust gas purification case 75 has an inlet side case 76 and an outlet side case 77. Inside the inlet side case 76 and the outlet side case 77, a diesel oxidation catalyst 79 such as platinum that generates nitrogen dioxide (NO2) and the collected particulate matter (PM) are continuously oxidized and removed at a relatively low temperature. The soot filter 80 having a honeycomb structure is arranged in series in the movement direction of the exhaust gas (from the lower side to the upper side in FIG. 8). In addition to the removal of particulate matter (PM) in the exhaust gas of the diesel engine 14 by the diesel oxidation catalyst 79 and the soot filter 80 in the inlet side case 76 and the outlet side case 77, carbon monoxide (CO) in the exhaust gas. And hydrocarbons (HC) are reduced.

On the other hand, in the second exhaust gas purification case 151, an SCR catalyst 152 for reducing urea selective catalyst and an oxidation catalyst 153 are provided. The second exhaust gas purification case 151 is configured in a vertically long elongated cylindrical shape that extends long in the vertical direction. In the second exhaust gas purification case 151, the SCR catalyst 152 and the oxidation catalyst 153 are arranged in series in the exhaust gas movement direction (from the lower side to the upper side in FIG. 8). An SCR inlet pipe 154 for taking in exhaust gas is provided on the cylindrical lower end side of the second exhaust gas purification case 151. An SCR outlet pipe 155 for discharging exhaust gas is provided on the upper end side of the cylindrical shape of the second exhaust gas purification case 151.

Furthermore, a urea mixing pipe 156 for mixing urea water in the exhaust gas fed from the first exhaust gas purification case 75 to the second exhaust gas purification case 151 is provided. The inlet side of the urea mixing pipe 156 is connected to the purification outlet pipe 82 of the first exhaust gas purification case 75, and the exhaust gas of the first exhaust gas purification case 75 is introduced into the urea mixing pipe 156. The SCR inlet pipe 154 is connected to the outlet side of the urea mixing pipe 156, and the tail pipe 83 is connected to the SCR outlet pipe 155. A urea water injection nozzle 157 is provided in the elbow pipe part of the urea mixing pipe 156 that changes the moving direction of the exhaust gas by about 90 degrees, and the long cylindrical straight pipe part of the urea mixing pipe 156 connected to the SCR inlet pipe 74 is provided. The urea aqueous solution is sprayed from the urea water injection nozzle 157 toward the inner hole.

A urea water injection pump that pumps a urea aqueous solution in a urea water tank (not shown) and an electric motor that drives the urea water injection pump are provided, and the urea water injection nozzle 157 is connected to the urea water injection pump via a urea water injection pipe. And the urea aqueous solution is sprayed from the urea water injection nozzle 157 into the urea mixing pipe 156, and the urea water supplied into the urea mixing pipe 156 is discharged from the first exhaust gas purification case 75 to the second exhaust gas. The exhaust gas reaching the gas purification case 151 is configured to be mixed as ammonia.

With the above configuration, carbon monoxide (CO) and hydrocarbons (HC) in the exhaust gas of the diesel engine 14 are reduced by the oxidation catalyst 79 and the soot filter 80 in the first exhaust gas purification case 75. Next, the urea water from the urea water injection nozzle 157 is mixed with the exhaust gas from the diesel engine 5 inside the urea mixing pipe 156. Then, the SCR catalyst 152 and the oxidation catalyst 153 in the second exhaust gas purification case 151 reduce nitrogen oxides (NOx) in the exhaust gas in which urea water is mixed as ammonia. That is, exhaust gas reduced in carbon monoxide (CO), hydrocarbons (HC), and nitrogen oxides (NOx) is discharged from the tail pipe 83 to the outside of the machine.

6 to 8, a purification inlet pipe 81 as an exhaust gas inlet pipe is welded and fixed to the inlet side case 76, and a purification outlet pipe 82 as an exhaust gas outlet pipe is fixed to the outlet side lid 78. To do. A purification outlet pipe 82 is connected to the urea mixing pipe 156. The exhaust gas of the diesel engine 14 is introduced into the first exhaust gas purification case 75 from the purification inlet pipe 81, and the exhaust gas in the first exhaust gas purification case 75 is discharged from the purification outlet pipe 82 to the urea mixing pipe 156, It is configured to be fed to the second exhaust gas purification case 151. The inlet side case 76 and the outlet side case 77 are detachably fastened by a plurality of sets of thick plate intermediate flange bodies 84 and a plurality of bolts 85.

With the above configuration, nitrogen dioxide (NO 2) generated by the oxidation action of the diesel oxidation catalyst 79 is supplied into the soot filter 80 from one end face (intake end face). Particulate matter (PM) contained in the exhaust gas of the diesel engine 14 is collected by the soot filter 80 and continuously oxidized and removed by nitrogen dioxide (NO2). In addition to the removal of particulate matter (PM) in the exhaust gas of the diesel engine 14, the content of carbon monoxide (CO) and hydrocarbon (HC) in the exhaust gas of the diesel engine 14 is reduced.

Next, as shown in FIGS. 4 to 7, an engine room frame 91 is erected on the traveling machine body 1, and the rear surface side of the diesel engine 14 placed on the upper surface side of the traveling machine body 1 is surrounded by the engine room frame 91. The engine room frame 91 includes a left square pipe-shaped column body 92, a right square pipe-shaped column body 93, and a square pipe-shaped horizontal frame 94 that is integrally welded to both left and

right column bodies

92, 93. Have. Further, a rubber pressure contact leg (not shown) is provided at the bottom rear portion of the driving cabin 10, and the pressure contact legs at the bottom of the driving cabin 10 are brought into contact with the upper surfaces of the left and right cradles 96 of the horizontal frame 94 from the upper side. The rear part of the driving cabin 10 is supported by 94 cradles 96 so as to be movable up and down. The diesel engine 14 is installed in the engine room 97 formed by the bottom surface side of the operation cabin 10 and the engine room frame 91.

Furthermore, the purification case support 111 is integrally fixed to the horizontal frame 94 by welding. Further, a front support bracket 114 as an exhaust gas purification unit frame is integrally welded to the outer surface of the first exhaust gas purification case 75 and the outer surface of the second exhaust gas purification case 151. The front part of the front support bracket 114 is fitted to the purification case support 111 from the rear side, and the purification case support is provided by a bolt 116 that is screwed to the side surface of the purification case support 111 and the front support bracket 114 from the left and right. A front support bracket 114 is detachably fastened to 111. That is, an engine room 97 is formed by the engine room frame 91, the diesel engine 14 is disposed in the engine room 97, and the plurality of exhaust gas purification cases (the first exhaust gas purification case 75 and the second exhaust gas purification case). 151) and a front support bracket 114 (exhaust gas purifying unit frame) configured as a unit. The front support bracket 114 is detachably disposed on the diesel engine 14 or the engine room frame 91.

That is, an engine room 97 is formed below the cabin 10, the cabin 10 is movably installed toward the front upper side (outside of the aircraft) of the traveling machine body 1, and a cradle 96 that supports the cabin 10, The purification case support 111 that supports the first exhaust gas purification case 75 and the second exhaust gas purification case 151 is disposed in the same part (the horizontal frame 94) of the engine room frame 91, and the first exhaust gas purification case 75 and the first exhaust gas purification case 75 2 The cabin 10 is configured to be able to contact and separate from the exhaust gas purification case 151. In addition, a first exhaust gas purification case 75 is disposed in the air discharge portion of the air conditioning fan 115 installed on the back of the cabin 10.

Further, as shown in FIGS. 5 to 8, a side support bracket 141 is integrally welded to the outer surface of the second exhaust gas purification case 151. Front support brackets 114 and side support brackets 141 are radially arranged on the outer surface of the second exhaust gas purification case 151. One end of the assembly adjustment plate 142 is fastened to the side support bracket 141 so that the position of the assembly adjustment plate 142 can be adjusted, and the machine-side support bracket 143 is fastened to the right side surface of the machine housing frame 144 of the threshing device 5. The machine side support bracket 143 is fastened to the end side. The side support bracket 141 and the main unit side support bracket 143 are connected and fixed so that the position can be adjusted via the assembly adjustment plate 142. *

That is, as shown in FIGS. 5 to 8, the first exhaust gas purification case 75 and the second exhaust gas purification case 151 are fixed to the engine room frame 91 through the front support bracket 114 in a vertically installed posture. Further, of the exhaust gas supply side at the lower end side of the first exhaust gas purification case 75, a purification inlet pipe 81 is provided in a laterally forward posture on the front side surface of the first exhaust gas purification case 75, and on the upper surface side of the engine 14 (front of the fuselage). The purification inlet pipe 81 is extended toward the end. An exhaust manifold 117 and a supercharger 118 are arranged at the upper part on the front side of the engine 14 mounted on the traveling machine body 1 with the output shaft 112 directed in the left-right direction. One end side of the exhaust connection pipe 119 is connected to the purification inlet pipe 81 via a bendable bellows-like pipe 98, while the other end side of the exhaust connection pipe 119 is connected to the exhaust outlet pipe 99 of the supercharger 118. Yes.

Also, the first exhaust gas purification case 75 is connected to the exhaust manifold 117 via the supercharger 118 and the exhaust connection pipe 119. As shown in FIG. 4, on the right side of the threshing device 5, the first exhaust gas having a cylindrical shape (vertical posture) that is long in the vertical direction is formed in a space formed between the front surface of the grain tank 7 and the rear surface of the cabin 10. A purification case 75 is disposed, and exhaust gas of the engine 14 is introduced into the first exhaust gas purification case 75 via the exhaust manifold 117, the supercharger 118, and the exhaust connection pipe 119, and also via the urea mixing pipe 156. The exhaust gas in the first exhaust gas purification case 75 is introduced into the second exhaust gas purification case 151. Further, exhaust gas is discharged from the tail pipe 83 toward the rear side on the upper surface side between the threshing device 5 and the grain tank 7.

On the other hand, as shown in FIGS. 4, 5, and 7, the exhaust support bracket 147 is fixed to the upper surface side of the threshing device 5, and the lower end side of the pipe support 148 is fastened to the exhaust support bracket 147. The lower surface side of the SCR outlet pipe 155 is fixed to the upper end side of the pipe support 148 erected on the exhaust support bracket 147. The SCR outlet pipe 155 (connecting portion with the tail pipe 83) is supported on the upper surface side of the threshing device 5 through the exhaust support bracket 147 and the pipe support 148. A tail pipe 83 is detachably connected to the upper surface side of the threshing device 5 via a vertical bracket 88 and a support bracket 89. In addition, a gap is formed at the connection portion between the small diameter side SCR outlet pipe 155 and the large diameter side tail pipe 83, and the exhaust gas from the SCR outlet pipe 155 is mixed with outside air to reduce the exhaust temperature. The gas is configured to be discharged from the tail pipe 83.

4 to 8, the outlet side cover 78 is detachably fastened and fixed to the outlet side case 77 of the first exhaust gas purification case 75 via a plurality of thick plate-like upper end flange bodies 86. Yes. A drain port 133 is provided on the lower end side of the outer surface of the first exhaust gas purification case 75. Therefore, dew condensation water or the like generated inside the first exhaust gas purification case 75 can be easily discharged from the drain port 133, and the components inside the first exhaust gas purification case 75 can be reduced from being rusted and corroded. The durability of the exhaust gas purification case 75 can be improved.

On the other hand, as shown in FIG. 6 and FIG. 7, a hanging metal member 134 is provided on the upper end side of the outer surface of the first exhaust gas purification case 75. Accordingly, in the combine assembly plant or the like, for example, the hanging metal concrete 134 is locked to the hook of a cargo handling suspension device such as a chain block or a hoist, and the first exhaust is passed through the hanging metal concrete 134 to the chain block or the like. The gas purification case 75 and the second exhaust gas purification case 151 can be suspended. Operations such as assembly or removal of the exhaust gas purification device 74 (first exhaust gas purification case 75, second exhaust gas purification case 151) can be easily performed. In addition, the hanging metal concrete 134 is integrally formed as a part of the thick plate-like upper end flange body 86. The second exhaust gas purification case 151 may also be provided with the hanging metal concrete 134.

Further, the sensor bracket 121 is bolted to the other end of the thick plate-like upper end flange body 86 projecting radially from the upper end side of the outer surface of the first exhaust gas purification case 75 to The sensor bracket 121 is arranged on the outer surface side. A differential pressure sensor 122 integrally provided with an electrical wiring connector is attached to a flat upper surface of a sensor bracket 121 projecting laterally from the exhaust gas purification case 75. A differential pressure sensor 122 is disposed on the outer surface of the exhaust gas purification case 75 via a sensor bracket 121. The differential pressure sensor 122 is connected to one end side of an upstream sensor pipe and a downstream sensor pipe (not shown). The upstream and downstream sensor

piping boss bodies

125 and 126 disposed in the exhaust gas purification case 75 so as to sandwich the soot filter 80 in the exhaust gas purification case 75 are connected to the upstream and downstream sensor pipings. The other end side of each is connected.

With the above configuration, the difference (exhaust gas differential pressure) between the exhaust gas pressure on the inflow side of the soot filter 80 and the exhaust gas pressure on the outflow side of the soot filter 80 is detected via the differential pressure sensor 122. Since the residual amount of particulate matter in the exhaust gas collected by the soot filter 80 is proportional to the differential pressure of the exhaust gas, the difference occurs when the amount of particulate matter remaining in the soot filter 80 increases more than a predetermined amount. Based on the detection result of the pressure sensor 122, regeneration control for reducing the amount of particulate matter in the soot filter 80 (for example, control for increasing the exhaust temperature) is executed. When the residual amount of particulate matter further increases beyond the regeneration controllable range, the maintenance work for removing the particulate matter artificially by removing and disassembling the exhaust gas purification case 75, cleaning the soot filter 80, and so on. Is done.

In addition, an electrical wiring connector 127 is integrally provided on the outer case portion of the differential pressure sensor 122, and an upstream side gas temperature sensor 128 that detects the exhaust temperature on the exhaust gas intake side of the diesel oxidation catalyst 76, and the diesel oxidation catalyst 76. A downstream gas temperature sensor 130 for detecting the exhaust gas temperature on the exhaust gas discharge side is provided. The electrical wiring connector 129 of the upstream gas temperature sensor 128 and the electrical wiring connector 131 of the downstream gas temperature sensor 130 are fixed to the sensor bracket 121.

That is, the rear part of the grain tank 7 is supported by the take-out conveyor 8a that supports the discharge auger 8, the front side of the grain tank 7 is horizontally rotated around the grain tank 7, and the grain tank 7 can be moved toward the outside of the machine. In the provided structure, a first exhaust gas purification case 75 and a second exhaust gas purification case 151 are arranged between the engine room frame 91 and the grain tank 7. An exhaust gas differential pressure sensor 122 and an electrical wiring connector as a connector for an exhaust gas temperature sensor are provided on the upper surface of the first exhaust gas purification case 75 disposed opposite to the exhaust side of the air conditioning fan 115 via a support bracket 121. 129 and 131 are arranged.

In addition, with the posture in which the connection directions of the electrical wiring connector 127 of the differential pressure sensor 122, the electrical wiring connector 129 of the upstream gas temperature sensor 128, and the electrical wiring connector 131 of the downstream gas temperature sensor 130 are directed in the same direction, The

connectors

127, 129, 131 are supported. Therefore, the exhaust of the air conditioning fan 115 can cool the differential pressure sensor 122 or the wirings of the

connectors

127, 129, and 131. The exhaust heat on the exhaust gas purification case 75 side can prevent them from burning out and improve their durability.

Next, a second embodiment will be described with reference to FIGS. In the first embodiment (FIGS. 1 to 8), the first exhaust gas purification case 75 and the second exhaust gas purification case 151 are provided to purify the exhaust gas of the diesel engine 14, but the second embodiment ( 9 to 16), the second exhaust gas purification case 151 is omitted. That is, in the second embodiment (FIGS. 9 to 16), only the first exhaust gas purification case 75 is provided. The overall structure of the combine as a work machine equipped with a diesel engine (FIGS. 9 to 11 of the second embodiment) is the same as that of the first embodiment (FIGS. 1 to 3). Description is omitted.

A first exhaust gas purification case 75 as a continuously regenerative exhaust gas purification device 74 (diesel particulate filter) and its mounting structure will be described with reference to FIGS. As shown in FIGS. 14 to 16, the exhaust gas purification device 74 includes a continuous regeneration type first exhaust gas purification case 75 for introducing the exhaust gas of the diesel engine 14. The first exhaust gas purification case 75 has an inlet side case 76 and an outlet side case 77. Inside the inlet side case 76 and the outlet side case 77, a diesel oxidation catalyst 79 (gas purifier) such as platinum that generates nitrogen dioxide (NO2) and the collected particulate matter (PM) are continuously provided at a relatively low temperature. The soot filter 80 (gas purifier) having a honeycomb structure to be oxidized and removed is arranged in series in the exhaust gas movement direction (from the lower side to the upper side in FIG. 7). In addition to the removal of particulate matter (PM) in the exhaust gas of the diesel engine 1 by the diesel oxidation catalyst 79 and the soot filter 80 in the inlet side case 76 and the outlet side case 77, carbon monoxide (CO) in the exhaust gas. And hydrocarbons (HC) are reduced.

14 to 16, a purification inlet pipe 81 as an exhaust gas inlet pipe is welded and fixed to the inlet side case 76, and a purification outlet pipe 82 as an exhaust gas outlet pipe is fixed to the outlet side lid 78. To do. A purification outlet pipe 82 is connected to a tail pipe 83 as an exhaust pipe. The exhaust gas of the diesel engine 14 is introduced into the exhaust gas purification case 75 from the purification inlet pipe 81, and the exhaust gas in the exhaust gas purification case 75 is discharged from the purification outlet pipe 82 to the tail pipe 83 and released outside the apparatus. It is constituted so that. The inlet side case 76 and the outlet side case 77 are detachably fastened by a plurality of sets of thick plate intermediate flange bodies 84 and a plurality of bolts 85.

Next, as shown in FIGS. 12 to 15, an engine room frame 91 is erected on the traveling machine body 1, and the rear surface side of the diesel engine 14 placed on the upper surface side of the traveling machine body 1 is surrounded by the engine room frame 91. The engine room frame 91 includes a left square pipe-shaped column body 92, a right square pipe-shaped column body 93, and a square pipe-shaped horizontal frame 94 that is integrally welded to both left and

right column bodies

Furthermore, the purification case support 111 is integrally fixed to the horizontal frame 94 by welding. A front support bracket 114 is integrally welded and fixed to the outer surface of the inlet side case 76 in the exhaust gas purification case 75. The front part of the front support bracket 114 is fitted to the purification case support 111 from the rear side, and the purification case support is provided by a bolt 116 that is screwed to the side surface of the purification case support 111 and the front support bracket 114 from the left and right. A front support bracket 114 is detachably fastened to 111.

That is, an engine room 97 is formed on the lower side of the cabin 10, the cabin 10 is movably installed toward the front upper side (outer side of the aircraft), the cradle 96 that supports the cabin 10, and the exhaust The purification case support 111 that supports the gas purification case 75 is disposed in the same part (the horizontal frame 94) of the engine room frame 91, and the cabin 10 can be connected to and separated from the exhaust gas purification case 75. . In addition, an exhaust gas purification case 75 is disposed in the air discharge portion of the air conditioning fan 115 installed on the back of the cabin 10.

Further, as shown in FIGS. 13 to 16, a side support bracket 141 is integrally welded and fixed to the outer surface of the inlet side case 76 in the exhaust gas purification case 75. Front support brackets 114 and side support brackets 141 are radially arranged on the same circumference of the outer surface of the entrance side case 76. One end of the assembly adjustment plate 142 is fastened to the side support bracket 141 so that the position of the assembly adjustment plate 142 can be adjusted, and the machine-side support bracket 143 is fastened to the right side surface of the machine housing frame 144 of the threshing device 5. The machine side support bracket 143 is fastened to the end side. The side support bracket 141 and the main unit side support bracket 143 are connected and fixed so that the position can be adjusted via the assembly adjustment plate 142. The side surface of the purification case support 111 and the right side of the threshing device 5 are detachably connected via a side surface support bracket 141.

That is, as shown in FIGS. 13 to 16, the middle part of the exhaust gas purification case 75 is fixed to the engine room frame 91 through the inlet side case 76 in a vertically placed posture. Further, a purification inlet pipe 81 is provided in a laterally forward posture on the front side of the exhaust gas purification case 75 among the exhaust gas supply side at the lower end side of the exhaust gas purification case 75, and the purification inlet is directed toward the upper surface side of the engine 14 (front of the fuselage). A tube 81 is extended. An exhaust manifold 117 and a supercharger 118 are arranged at the upper part on the front side of the engine 14 mounted on the traveling machine body 1 with the output shaft 112 directed in the left-right direction. One end side of the exhaust connection pipe 119 is connected to the purification inlet pipe 81 via a bendable bellows-like pipe 98, while the other end side of the exhaust connection pipe 119 is connected to the exhaust outlet pipe 99 of the supercharger 118. Yes.

Further, an exhaust gas purification case 75 is connected to the exhaust manifold 117 via a supercharger 118 and an exhaust connection pipe 119. As shown in FIG. 4, on the right side of the threshing device 5, an exhaust gas purification case having a cylindrical shape (vertical posture) vertically long in a space formed between the front surface of the grain tank 7 and the rear surface of the cabin 10. 75, and the exhaust gas of the engine 14 is introduced into the exhaust gas purification case 75 via the exhaust manifold 117, the supercharger 118, and the exhaust connection pipe 119. Further, exhaust gas is discharged from the tail pipe 83 toward the rear side on the upper surface side between the threshing device 5 and the grain tank 7.

On the other hand, as shown in FIGS. 12, 13, and 15, the exhaust support bracket 147 is fixed to the upper surface side of the threshing device 5, and the lower end side of the pipe support 148 is fastened to the exhaust support bracket 147. The lower surface side of the connecting portion between the purification outlet pipe 82 and the tail pipe 83 is fixed to the upper end side of the pipe support 148 that is erected in an upright manner. A connecting portion between the purification outlet pipe 82 and the tail pipe 83 is supported on the upper surface side of the threshing device 5 via the exhaust support bracket 147 and the pipe support 148. Note that a gap is formed at the connecting portion between the small-diameter side purification outlet pipe 82 and the large-diameter side tail pipe 83, and the exhaust gas from the purification outlet pipe 82 is mixed with outside air to reduce the exhaust temperature. The gas is configured to be discharged from the tail pipe 83.

As shown in FIGS. 12 to 16, the outlet side cover 78 is detachably fastened and fixed to the outlet side case 77 of the exhaust gas purification case 75 via a plurality of thick plate-like upper end flange bodies 86. An intermediate portion of the purification outlet pipe 82 is disposed on one end side of the thick plate-like upper end flange body 86 projecting radially in the outer peripheral direction of the outlet side case 77 via a horizontal bracket 87, a vertical bracket 88 and a support bracket 89. Are connected to the outlet side case 77 to support the purification outlet pipe 82. Further, as shown in FIGS. 15 and 16, a drain port 133 is provided on the lower end side of the outer surface of the exhaust gas purification device 74. Therefore, dew condensation water or the like generated inside the exhaust gas purification device 74 can be easily discharged from the drain port 133, and the components inside the exhaust gas purification device 74 can be reduced from being rusted and corroded. Durability can be improved.

On the other hand, as shown in FIG. 14 and FIG. 15, a suspension metal plate 134 is provided on the upper end side of the outer surface of the exhaust gas purification device 74. Therefore, in the assembly plant of the combine, for example, the suspension metal concrete 134 is locked to the hook of a cargo handling suspension device such as a chain block or a hoist, and the exhaust gas purification is performed via the suspension metal concrete 134 on the chain block or the like. The device 74 can be suspended, and the heavy exhaust gas purification device 74 can be easily transported and moved. Operations such as assembly or removal of the exhaust gas purification device 74 can be easily performed, and the detachability workability of the exhaust gas purification device 74 can be improved. In addition, the hanging metal concrete 134 is integrally formed as a part of the thick plate-like upper end flange body 86.

Further, the sensor bracket 121 is bolted to the other end of the thick plate-like upper end flange body 86 projecting radially in the outer peripheral direction of the outlet side case 77, and the sensor bracket 121 is arranged on the outer surface side of the upper end side of the exhaust gas purification case 75. Arrange. A differential pressure sensor 122 integrally provided with an electrical wiring connector is attached to a flat upper surface of a sensor bracket 121 projecting laterally from the exhaust gas purification case 75. A differential pressure sensor 122 is disposed on the outer surface of the exhaust gas purification case 75 via a sensor bracket 121. The differential pressure sensor 122 is connected to one end side of an upstream sensor pipe and a downstream sensor pipe (not shown). The upstream and downstream sensor

piping boss bodies

That is, the rear part of the grain tank 7 is supported by the take-out conveyor 8a that supports the discharge auger 8, the front side of the grain tank 7 is horizontally rotated around the grain tank 7, and the grain tank 7 can be moved toward the outside of the machine. In the provided structure, an exhaust gas purification case 75 is disposed between the engine room frame 91 and the grain tank 7. An exhaust gas differential pressure sensor 122 and an electrical wiring connector 129 as an exhaust temperature sensor connector are provided on an upper surface of an exhaust gas purification case 75 disposed opposite to the exhaust side of the air conditioning fan 115 via a support bracket 121. 131 is arranged.

connectors

As shown in FIGS. 1 to 8 and FIGS. 9 to 16, a first exhaust gas purification case 75 and a second exhaust gas purification case 151 as a plurality or a single exhaust gas purification case for treating the exhaust gas of the diesel engine 14 are used. A working machine mounting engine device in which an exhaust gas connecting pipe 119 as an exhaust pipe of a diesel engine 14 is connected to an exhaust gas intake port of a first exhaust gas purification case 75 and a second exhaust gas purification case 151. 1, an engine room frame 91 is provided, an engine room 97 is formed by the engine room frame 91, and the diesel engine 14 is disposed in the engine room 97, and includes a first exhaust gas purification case 75 and a second exhaust gas. An exhaust gas purification unit frame 114 configured as a unit by fixing the purification case 151 is provided. For example, it is detachably disposed to an exhaust gas purification unit frame 114 in the diesel engine 14 or the engine room frame 91. Accordingly, the support structure of the first exhaust gas purification case 75 and the second exhaust gas purification case 151 can be simplified, and the first exhaust gas purification case 75 and the second exhaust gas purification can be applied to a work vehicle such as an agricultural machine or a construction machine. The case 151 can be easily attached and detached as a unit. Further, the first exhaust gas purification case 75 and the second exhaust gas purification case 151 are arranged in a compact manner close to the diesel engine 14, and the self-regeneration capability of the first exhaust gas purification case 75 and the like can be easily secured. However, the first exhaust gas purification case 75 and the second exhaust gas purification case 151 can be easily assembled inside or outside the engine room 97 where the diesel engine 14 is disposed.

As shown in FIGS. 1, 4 to 8, 9, and 12 to 16, an exhaust gas purification case 75 for treating exhaust gas of the diesel engine 14 is provided, and an exhaust gas purification case 75 is provided in the exhaust pipe of the diesel engine 14. In the engine device for mounting work equipment to which the purification inlet pipe 81 as an exhaust gas intake is connected, the exhaust gas purification case 75 is provided in a vertical position, and the purification inlet pipe 81 is disposed on the lower end side of the exhaust gas purification case 75. A purification outlet pipe 82 as an exhaust gas discharge port is disposed on the upper end side of the exhaust gas purification case 75. Therefore, the plane installation space of the exhaust gas purification case 75 can be formed narrower than a structure that supports the horizontal orientation. The exhaust gas purification case 75 can be compactly arranged at a position close to the exhaust manifold 117 of the diesel engine 14 and higher than the exhaust manifold 117. The layout of the diesel engine 14 and peripheral devices (such as the exhaust gas purification device 74) can be easily designed. In addition, with the diesel engine 14 installed in various working machines, operations such as assembling or removing the exhaust gas purification case 75 can be easily performed, and the detachability workability of the exhaust gas purification device 74 can be improved.

As shown in FIGS. 4 to 8, a plurality of front support brackets 114 or side support brackets 141 as a plurality of support bracket bodies are provided radially in the middle of the upper and lower widths of the outer surface of the exhaust gas purification case 75 and the exhaust gas is exhausted. A drain port 133 is provided on the lower end side of the outer surface of the gas purification case 75. Therefore, while it is possible to improve the support rigidity of the exhaust gas purification device 74 against mechanical vibration or the like, the dew condensation water generated inside the exhaust gas purification case 75 can be easily discharged from the drain port 133, and the exhaust gas purification case The durability of 75 can be improved.

As shown in FIGS. 4 to 8, the front support bracket 114 or the side support bracket 141 projects radially from the outer surface of the exhaust gas purification case 75 in the middle of the vertical width, and the outer surface of the exhaust gas purification case 75. Of these, a hanging metal plate 134 is provided on the upper end side. Accordingly, while the support rigidity of the exhaust gas purification case 75 can be improved against mechanical vibrations, the exhaust gas purification case 75 is suspended from a chain block or the like via the suspension metal member 134, and assembled or removed. Thus, the work of attaching and detaching the exhaust gas purification device 74 can be improved.

As shown in FIG. 1 and FIGS. 4 to 8, a traveling machine 1 equipped with an engine 14, a reaping device 3 for harvesting cereals in a field, a threshing device 5 for threshing the harvested culm, and a grain In the structure including the grain tank 7 to be taken out, the engine room frame 91 is erected on the traveling machine body 1, the engine room 97 is formed by the engine room frame 91, and the engine 14 is disposed in the engine room 97. The exhaust gas purification case 75 is disposed in a vertical orientation outside the exhaust gas, and the exhaust gas of the engine 14 is introduced to the lower end side of the exhaust gas purification case 75 while the tail pipe 83 is connected to the upper end side of the exhaust gas purification case 75. It is configured as follows. Therefore, it is not necessary to secure an installation space for the exhaust gas purification case 75 in the engine room 97, and the volume of the engine room 97 or the volume of the exhaust gas purification case 75 is not limited. The gas purification device 74 can be supported. For example, an installation space for the exhaust gas purification case 75 can be easily secured between the engine room 97 and an adjacent working unit (such as the threshing device 5 or the grain tank 7). Further, the exhaust gas introduction side at the lower end side of the vertically disposed exhaust gas purification case 75 can be connected to the exhaust manifold 117 of the engine 14 at the shortest distance, and the tail pipe 83 is provided at a high position of the adjacent working unit (threshing device 5). The support structure of the tail pipe 83 can be simplified.

As shown in FIGS. 4 to 8, an exhaust gas purification device 74 (exhaust gas purification case 75) for treating exhaust gas of the diesel engine 14 is provided, and an exhaust gas intake port of the exhaust gas purification case 75 is provided in the exhaust pipe of the diesel engine 14. In the engine device to which the purification inlet pipe 81 is connected, a plurality of front support brackets 114 and side support brackets 141 as radial support brackets project radially on the same circumference of the outer surface of the exhaust gas purification case 75. I am letting. Therefore, the exhaust gas purification case 75 is multi-faceted (multi-directional) to the chassis frame (engine room frame 91 or machine housing frame 144 of the threshing device 5) of various working machines via the front support bracket 114 and the side support bracket 141. The seismic strength of the exhaust gas purification case 75 can be improved against mechanical vibration and the like. The exhaust gas purification case 75 can be supported with high rigidity on a chassis frame or the like separated from the diesel engine 14. The support structure of the exhaust gas purification case 75 can be simplified and can be configured at low cost.

As shown in FIGS. 4 to 8, the front support bracket 114 as a support bracket body that restricts the movement of the exhaust gas purification device 74 in the front-rear direction and the support bracket body that restricts the movement of the exhaust gas purification case 75 in the left-right direction. The side support bracket 141 and the machine frame (engine room frame 91) in which the diesel engine 14 is disposed or the machine frame (machine frame 144) of the threshing device 5 as an adjacent working unit are provided on the front support bracket 114 and the side surface. The exhaust gas purification case 75 is configured to be supported in a vertical position via the support bracket 141. Accordingly, the exhaust gas purification case 75 can be supported with high rigidity by improving the earthquake resistance, but the exhaust gas purification case 75 is compactly arranged using the space formed between the diesel engine 14 and the working part. it can.

As shown in FIGS. 4 to 8, the exhaust gas purification case 75 is provided in a vertically installed posture in which the exhaust gas moves from the lower end side toward the upper end side, and the substantially same height of the outer surface of the exhaust gas purification case 75 is provided. The front support bracket 114 and the side support bracket 141 as a plurality of support bracket bodies are arranged at the positions, and the front support bracket 114 restricts the movement of the exhaust gas purification case 75 mainly in the front-rear direction, and the side support bracket 141 The exhaust gas purification case 75 is mainly configured to be able to regulate movement in the left-right direction. Therefore, the exhaust gas purification is placed in a vertical position in which the purification inlet pipe 81 is disposed on the lower end side of the exhaust gas purification case 75 and the exhaust gas discharge port (purification outlet pipe 82) is disposed on the upper end side of the exhaust gas purification case 75. The case 75 can be supported with high rigidity. Further, the exhaust gas purification case 75 can be compactly disposed at a position close to the exhaust manifold 117 of the diesel engine 14 and higher than the exhaust manifold 117, and the diesel engine 14 and peripheral devices (exhaust gas purification device 74). Etc.) can be improved.

As shown in FIG. 1 and FIG. 4 to FIG. 8, a traveling machine 1 equipped with a diesel engine 14, a harvesting device 3 for harvesting cereals in a field, a threshing device 5 for threshing the harvested culm, and a grain The engine room frame 91 is erected on the traveling machine body 1, the engine room 97 is formed by the engine room frame 91, and the diesel engine 14 is disposed in the engine room 97. The exhaust gas purification case 75 is disposed in a vertical position on the outside of the engine room frame 91 via the front support bracket 114, and the base end of the sensor bracket 121 is disposed on the upper end side of the outer surface of the exhaust gas purification case 75. The exhaust gas purifier is attached to the distal end side of the sensor bracket 121 that is fixed to the side and protrudes outward from the exhaust gas purification case 75. It is arranged a differential pressure sensor 122 of the apparatus 74. Therefore, it is not necessary to secure an installation space for the exhaust gas purification case 75 in the engine room 97, and the volume of the engine room 97 or the volume of the exhaust gas purification case 75 is not limited. Thus, the exhaust gas purification device 74 (exhaust gas purification case 75) can be supported. Further, the differential pressure sensor 122 can be spaced apart from the high temperature portion of the exhaust gas purification case 75. The temperature effect of the exhaust gas purification case 75 on the differential pressure sensor 122 can be reduced, and the configuration can be reduced. The electrical wiring for the differential pressure sensor 122 and the like can also be simplified.

1 traveling machine body 3 reaping device 5 threshing device 7 grain tank 14 diesel engine 75 exhaust gas purification case 81 purification inlet pipe (exhaust gas intake)
91 Engine room frame 97 Engine room 114 Front support bracket (exhaust gas purification unit frame, support bracket body 121 sensor bracket 122 Differential pressure sensor 141 Side support bracket (support bracket body)

Claims

In an engine device for mounting on a working machine comprising a plurality or a single exhaust gas purification case for treating exhaust gas of a diesel engine, and connecting an exhaust gas intake port of the exhaust gas purification case to an exhaust pipe of the diesel engine,
An engine device for mounting on a working machine, wherein a plurality of support bracket bodies project radially from the outer circumference of the exhaust gas purification case on the same circumference.
The exhaust gas purification case is provided in a vertical orientation, the exhaust gas intake port is disposed on the lower end side of the exhaust gas purification case, and the exhaust gas exhaust port is disposed on the upper end side of the exhaust gas purification case. The engine device for mounting a work machine according to claim 1.
A support bracket body that restricts the movement of the exhaust gas purification case in the front-rear direction and a support bracket body that restricts the movement of the exhaust gas purification case in the left-right direction. The working machine mounting engine apparatus according to claim 1, wherein the exhaust gas purification case is supported in a vertically placed posture on the machine frame of each part via the support bracket bodies.
The exhaust gas purification case is provided in a vertical position in which the exhaust gas moves from the lower end side toward the upper end side, and a plurality of support bracket bodies are provided at substantially the same height position on the outer surface of the exhaust gas purification case. The front support bracket and the side support bracket are arranged, the front support bracket restricts the movement of the exhaust gas purification case mainly in the front-rear direction, and the side support bracket mainly controls the exhaust gas purification case in the left-right direction. The construction machine-mounted engine device according to claim 1, wherein the movement of the work equipment can be regulated.
A traveling machine body equipped with the diesel engine, a reaping device for harvesting grain culm in a field, a threshing device for threshing the harvested corn straw, and a grain tank for taking out the grains, and an engine room frame on the traveling machine body An engine room is formed by standing and forming the engine room frame, and the diesel engine is disposed in the engine room, and the exhaust gas purification is performed outside the engine room frame via the support bracket body. The case is arranged in a vertical orientation, and the base end side of the sensor bracket is fixed to the upper end side of the outer side surface of the exhaust gas purification case, and protrudes outward from the exhaust gas purification case. The differential pressure sensor of the exhaust gas purification case is disposed on the front end side of the sensor bracket. Of the working machine mounting engine equipment.
A plurality of support bracket bodies project radially in the middle of the upper and lower widths of the outer surface of the exhaust gas purification case, and a drain port is provided on the lower end side of the outer surface of the exhaust gas purification case. The working machine mounting engine apparatus according to claim 1, wherein
A plurality of support bracket bodies project radially from the upper and lower widths of the outer surface of the exhaust gas purification case, and a suspension metal is provided on the upper end side of the outer surface of the exhaust gas purification case. The engine device for mounting a work machine according to claim 1, wherein:
A traveling machine body equipped with an engine, a reaping device that harvests grain culms in the field, a threshing device that threshs the harvested corn straw, and a grain tank that takes out the grains, and an engine room frame is erected on the traveling body And an engine room is formed by the engine room frame, and the engine is arranged in the engine room, and the exhaust gas purification case is arranged in a vertical posture outside the engine room frame, 2. The work machine mounting according to claim 1, wherein the exhaust gas of the engine is introduced into a lower end side of the exhaust gas purification case, and a tail pipe is connected to an upper end side of the exhaust gas purification case. Engine equipment.
An engine room frame is provided in a traveling machine body, an engine room is formed by the engine room frame, and the diesel engine is disposed in the engine room, and the plurality or single exhaust gas purification cases are fixed to each other. 2. The working machine-mounted engine according to claim 1, further comprising an exhaust gas purification unit frame configured as a unit, wherein the exhaust gas purification unit frame is detachably disposed on the diesel engine or the engine room frame. apparatus.