JP2021097644A - combine - Google Patents

Abstract

To solve a problem in prior arts in which a tail pipe is arranged in a linear state with respect to an SCR, so the tail pipe interferes with a grain tank, and therefore capacity of the grain tank is reduced.SOLUTION: A combine is configured so that, a thresher 3 is provided on one side above a machine frame 1 comprising on a lower part thereof, a travel unit 2, a grain tank 5 is provided on the other side, a steering part 6 is provided on a front part of the grain tank 5, and a reaping unit 4 is provided on a front part of the machine frame 1. In the combine, a DPF 16 of an exhaust emission control unit 15 for purifying an exhaust gas of an engine 11 provided below a driver seat of the steering part 6, is provided between the thresher 3 and the grain tank 5, the DPF 16 is formed into a longitudinal shape in a cross direction, a silencer 26 is fitted to a rear part of the DPF 16, and a base exhaust pipe 27 of the tail pipe 22 is fitted to the silencer 26.SELECTED DRAWING: Figure 2

Description

The present invention relates to a combine.

Conventionally, a configuration in which a diesel engine is provided below the driver's seat and a DPF and SCR of an exhaust treatment device are provided behind the diesel engine is known (Patent Document 1).

Japanese Unexamined Patent Publication No. 2019-115281

In the above-mentioned known example, since the tail pipe is arranged linearly with the SCR, there is a problem that the tail pipe interferes with the Glen tank and the capacity of the Glen tank is reduced.
That is, if the tail pipes are simply arranged so as to intersect the length direction of the SCR, the flow of exhaust gas from the SCR to the tail pipe is not smooth, which causes the temperature of the tail pipe to rise. ..
Therefore, in the known example, the tail pipes are arranged in a straight line to prevent the temperature of the tail pipes from rising. However, this causes the tail pipes to interfere with the Glen tank and reduce the capacity of the Glen tank. Become.
In the present application, the configuration of the DPF of the exhaust purification device is devised and the tail pipe is arranged so as not to interfere with the Glen tank.

In the invention according to claim 1, a threshing device 3 is provided on one side above the machine frame 1 provided with a traveling device 2 below, a grain tank 5 is provided on the other side, and a control unit is provided in front of the grain tank 5. In a combine harvester in which 6 is provided and a cutting device 4 is provided in front of the machine frame 1, the DPF 16 of the exhaust purification device 15 provided below the driver's seat of the control unit 6 for purifying the exhaust gas of the engine 11 is threshed. It is provided between the device 3 and the grain tank 5, and the DPF 16 has a long shape in the front-rear direction. A silencer 26 is attached to the rear part of the DPF 16, and a base exhaust pipe 27 of the tail pipe 22 is attached to the silencer 26 as a combine. ..
According to the second aspect of the present invention, the DPF 16 and the silencer 26 are arranged in a straight line, and the base exhaust pipe 27 of the tail pipe 22 is arranged in a direction intersecting the axial direction of the DPF 16.
According to the third aspect of the present invention, the tail pipe 22 is composed of two parts, a base exhaust pipe 27 attached to the silencer 26 side and a main body 28 of the tail pipe 22, and a bent portion in which an intermediate portion of the base exhaust pipe 27 is bent. It is formed in 33, and the main body 28 is a combine having a long shape in the front-rear direction.
In the invention according to claim 4, the tip of the base exhaust pipe 27 of the tail pipe 22 is inserted into the base of the main body 28, and the tip of the base exhaust pipe 27 and the base of the main body 28 are overlapped as a double cylinder configuration. It is a composed combine.
According to the fifth aspect of the present invention, the main body 28 of the tail pipe 22 is a combine having a double cylinder structure of an inner pipe 40 and an outer pipe 41.
In the invention according to claim 6, the tip end portion and the center portion of the main body 28 of the tail pipe 22 are attached to the threshing device 3 side, and the stay 51 at the tip end portion of the main body 28 is connected to the inner pipe 40 and the outer pipe 41 of the tail pipe 22. It is a combine provided in the vicinity of the plate 52 to be used.

In the invention according to claim 1, since the DPF 16 has a long shape in the front-rear direction, the silencer 26 is attached to the rear portion of the DPF 16, and the base exhaust pipe 27 of the tail pipe 22 is attached to the silencer 26, the base exhaust pipe of the tail pipe 22 is attached. The tail pipe 22 can be arranged so that the silencer 26 exhausts 27 from the axial direction of the DPF 16 by 90 degrees, whereby the tail pipe 22 can be arranged without affecting the shape of the grain tank 5. , The smooth exhaust efficiency of the tail pipe 22 and the securing of the capacity of the grain tank 5 can be achieved at the same time.
In the invention according to claim 2, since the DPF 16 and the silencer 26 are arranged in a straight line and the base exhaust pipe 27 of the tail pipe 22 is arranged in the direction intersecting the axial direction of the DPF 16, the tail pipe 22 is arranged. The exhaust direction of the tail pipe 22 can be changed by 90 degrees from the axial direction of the DPF 16 without bending the main body 28 by 90 degrees, and as a result, the tail pipe 22 can be exhausted without reducing the capacity of the Glen tank 5. Since the exhaust gas can be arranged and the exhaust direction is changed by 90 degrees at the silencer 26 portion, the flow of exhaust gas can be smoothed and the temperature rise of the tail pipe 22 can be suppressed.
In the invention according to claim 3, the tail pipe 22 is composed of two parts, a base exhaust pipe 27 attached to the silencer 26 side and a main body 28 of the tail pipe 22, and a bent portion in which an intermediate portion of the base exhaust pipe 27 is bent. Since it is formed in 33 and the main body 28 has a long shape in the front-rear direction, the main body 28 of the base exhaust pipe 27 and the tail pipe 22 can be bent easily at one place by using a two-part configuration. To.
In the invention according to claim 4, the tip of the base exhaust pipe 27 of the tail pipe 22 is inserted into the base of the main body 28, and the tip of the base exhaust pipe 27 and the base of the main body 28 are overlapped to form a double cylinder configuration. Since it is configured, by overlapping the base exhaust pipe 27 and the main body 28, an ejector effect is generated, and as a result, outside air is sucked through the gap between the base exhaust pipe 27 and the main body 28 of the tail pipe 22, so that the main body 28 Can be cooled. Further, since the temperature rise of the outer peripheral portion of the tail pipe 22 is reduced, the risk of ignition even if straw debris gets on the tail pipe 22 can be reduced.
In the invention according to claim 5, since the main body 28 of the tail pipe 22 has a double-cylinder configuration of the inner pipe 40 and the outer pipe 41, it is possible to reduce the temperature rise of the outer peripheral portion of the tail pipe 22. , Even if straw debris gets on the tail pipe 22, the risk of ignition can be reduced.
In the invention according to claim 6, the tip end portion and the center portion of the main body 28 of the tail pipe 22 are attached to the threshing device 3 side, and the stay 51 at the tip end portion of the main body 28 is connected to the inner pipe 40 and the outer pipe 41 of the tail pipe 22. Since it is provided in the vicinity of the plate 52, the support strength of the mounting portion of the stay 51 can be strengthened, and the influence of the body vibration on the support configuration of the tail pipe 22 can be suppressed.

Side view of the combine. A side view showing the positional relationship between the exhaust gas purification device and the fried grain cylinder. The same perspective view. Rear view of Glen tank and tail pipe. Perspective view of DPF, tail pipe and Glen tank. The same side view. Side view of DPF and tail pipe. Partial vertical side view of the tail pipe. A side view of the DPF with a cover. The same perspective view. The same perspective view.

Explaining one embodiment of the present invention with a diagram, reference numeral 1 denotes a machine frame of a working machine, and the present application is an example of a combine harvester.
A traveling device 2 is provided below the machine frame 1, and a threshing device 3 is provided on one side above the machine frame 1. A cutting device 4 is provided in front of the threshing device 3, and a grain tank 5 is provided on the side of the threshing device 3 (FIG. 1). 6 is a control unit, 7 is a scraping reel of a cutting device 4, 8 is a cutting blade, 9 is a table, and 10 is a transport elevator.
An engine (diesel engine, hereinafter referred to as an engine) 11 is provided below the driver's seat of the control unit 6.
12 is an air cleaner, 13 is a pre-cleaner, and 14 is a pipe.
An exhaust purification device 15 is provided in the exhaust pipe of the engine 11.

As a result, the engine 11 is started, each part of the grain removal device 3 and the harvesting device 4 is driven by the rotation of the engine 11, and the traveling device 2 is driven to run to perform the harvesting and threshing work. The driving force obtained by burning the supplied fuel is transmitted to each part, and the burned fuel is purified as exhaust gas by the DPF 16 of the exhaust purification device 15 and discharged to the outside of the machine.
The exhaust purification device 15 is composed of a soluble organic component in PM contained in the exhaust gas of the diesel engine 11 and a DPF 16 that oxidizes CO and HC.
The DPF 16 has a long shape in the front-rear direction, a silencer 26 is attached to the rear portion of the DPF 16 (FIGS. 3, 5, and 6), and the base exhaust pipe 27 of the tail pipe 22 is attached to the silencer 26.
Therefore, since the silencer 26 having a muffling function is attached to the rear part of the DPF 16, the exhaust noise when the exhaust gas is discharged from the DPF 16 can be reduced.

The DPF 16 is formed in a cylindrical shape, a silencer 26 is attached to the rear end surface of the DPF 16, and the base exhaust pipe 27 of the tail pipe 22 is projected from the silencer 26 in a direction intersecting the axial direction of the DPF 16 to discharge exhaust gas. Is configured to be exhausted by changing the temperature by 90 degrees (Fig. 5).
Therefore, the exhaust direction of the tail pipe 22 can be changed by 90 degrees from the axial direction of the DPF 16 without bending the tail pipe 22 by 90 degrees, whereby the tail can be exhausted without affecting the shape of the grain tank 5. The pipe 22 can be arranged, and as a result, the smooth exhaust efficiency of the tail pipe 22 and the securing of the capacity of the grain tank 5 can be achieved at the same time.
That is, when the tail pipe 22 itself is bent 90 degrees with respect to the DPF 16 and attached, the flow of exhaust gas is not smooth, which causes the temperature of the tail pipe 22 to rise. However, in the present invention, the tail pipe 22 is attached. It is possible to prevent the temperature rise of 22.

Further, if the tail pipe 22 is provided at the discharge port on the rear end surface of the DPF 16 in parallel with the axial direction of the DPF 16, it collides with the grain tank 5. Therefore, the grain tank 5 in this portion is cut out and arranged. In the invention, the tail pipe 22 can be arranged without reducing the capacity of the grain tank 5.
The tail pipe 22 is composed of two parts, a base exhaust pipe 27 attached to the silencer 26 side and a main body 28 of the tail pipe 22 (FIG. 7).
Therefore, if the tail pipe 22 is to be composed of one part, it is necessary to bend it in two places. However, by making it into a two-part structure, the bending of the exhaust pipe and the tail pipe 22 is improved in one place for processing. make it easier.
The direction of the discharge port 29 (base exhaust pipe 27) of the silencer 26 is configured to face the upper left side of the machine body in the rear view.

Therefore, in the rear view, the tail pipe 22 can be installed in the space away from the notch of the grain tank 5 and the fried grain cylinder 30 to guide the exhaust gas (FIGS. 2 and 5).
That is, the silencer 26 located at the rear of the DPF 16 is arranged between the right side surface of the grain raising cylinder 30 and the left side surface of the grain tank 5, and is provided by the base exhaust pipe 27 of the tail pipe 22 attached to the silencer 26 of the DPF 16. The exhaust direction can be guided to the rear left side while avoiding the winnowing cylinder 30, and the tail pipe 22 can be arranged by effectively utilizing the space.
Further, a part or all of the tail pipe 22 is arranged above the second fried grain cylinder 34.
Therefore, the tail pipe 22 can be arranged by effectively utilizing the space above the second fried grain cylinder 34.
The base exhaust pipe 27 of the tail pipe 22 attached to the discharge port 29 of the silencer 26 is bent at one place on the left rear side of the machine body with respect to the traveling direction and diagonally upward to form a bent part 33. (Fig. 7).

Therefore, the gaps between the fried grain cylinder 30, the second fried grain cylinder 34, the grain tank 5, and the threshing device 3 can be well evaded and arranged (FIG. 2).
The tip of the base exhaust pipe 27 of the tail pipe 22 is inserted into the base of the main body 28, and the tip of the base exhaust pipe 27 and the base of the main body 28 are overlapped as a double cylinder configuration (FIGS. 7 and 8). ..
Therefore, by overlapping the base exhaust pipe 27 and the main body 28, the main body 28 is cooled because the outside air is sucked through the gap between the base exhaust pipe 27 and the main body 28 of the tail pipe 22 due to the ejector effect (FIG. 8). ..
Further, since the tail pipe 22 has a double cylinder structure of the base exhaust pipe 27 and the main body 28, the main body 28 is cooled by sucking outside air from the gap between the outer surface of the base exhaust pipe 27 of the tail pipe 22 and the inner surface of the main body 28. As a result, the temperature rise of the outer peripheral portion of the tail pipe 22 can be reduced, and the risk of ignition even if straw debris gets on the tail pipe 22 can be reduced.

Further, a main body bending portion 35 is provided on the tip end side of the main body 28, and the main body bending portion 35 is formed so as to be bent more loosely than the bending portion 33 of the base exhaust pipe 27.
Therefore, since the pipe diameter of the base exhaust pipe 27 is small, there is no problem in processing even if it is bent tightly, and since the main body 28 of the tail pipe 22 has a large pipe diameter, wrinkles are generated in the bent portion when it is bent tightly. However, since the bending of the main body bending portion 35 on the main body 28 side of the tail pipe 22 is loosely configured, the processing is facilitated.
Further, the rear part of the tail pipe 22 is configured to be horizontal to the airframe when viewed from the side of the airframe, but a plate 36 is added to the tip portion where the exhaust gas comes out so that the exhaust gas flows upward to the airframe (FIG. 2).
Therefore, the main body 28 of the tail pipe 22 is configured to be horizontal to the airframe, and the plate 36 guides the exhaust gas to flow upward to the airframe. Therefore, even if the operator is located on the side of the airframe, the operator It is possible to prevent the exhaust gas from directly hitting the air.

Further, a positioning plate 38 provided on the fixing portion 37 is attached to the base exhaust pipe 27 (FIG. 2).
Therefore, the plate positioning plate 38 attached to the base exhaust pipe 27 is configured to come into contact with the rear end surface of the silencer 26, and the positioning plate 38 is provided at this position so that the tip of the base exhaust pipe 27 is oriented toward the tail pipe 22. Aligns with the position of the base of the body 28, facilitating assembly and mounting.
In the present embodiment, the frying cylinder 30 is used as a fixing portion 37, and the base exhaust pipe 27 of the tail pipe 22 is attached to the frying cylinder 30 via the positioning plate 38.
Since the Glen tank 5 is opened to the outside with respect to the airframe, the tail pipe 22 is not attached to the Glen tank 5, and the Glen tank 5 cannot be a fixed portion 37.

The main body 28 of the tail pipe 22 has a double-cylinder configuration of an inner pipe 40 and an outer pipe 41 (FIGS. 7 and 8), and the inner pipe 40 is formed of an integral tubular member to have a bent configuration in one place. The 41 is configured by inserting linear pipe members 42 having large diameters on the inlet side and the outlet side into the intermediate cylinder 43 forming the main body bent portion 35, respectively.
That is, the intermediate cylinder 43 is inserted in advance into the inner pipe 40 of the bent portion 35 of the main body, and then the linear pipe member 42 having a large diameter is inserted into the inlet side and the outlet side of the intermediate cylinder 43, respectively, and the intermediate cylinder is inserted. The configuration is such that 43 is sandwiched between them.
Therefore, the outer pipe 41 is divided into two parts, a linear pipe member 42 and an intermediate cylinder 43 having only a portion of the main body bent portion 35.
In other words, the main body 28 of the tail pipe 22 has linear pipe members 42 having a large diameter arranged on the inlet side and the outlet side, and the pipe member 42 on the inlet side and the pipe member 42 on the outlet side are bent (curved). The intermediate cylinder 43 is connected by the intermediate cylinder 43, and the main body bent portion 35 is formed by the intermediate cylinder 43. As a result, the main body 28 is divided into a pipe member 42 and an intermediate cylinder 43.

Therefore, with a simple configuration, the portion of the main body 28 of the tail pipe 22 can be configured and formed by a double pipe of the inner pipe 40 and the outer pipe 41.
Further, the tubular plate 45 is fixed to the inner pipe 40 of the tail pipe 22 and the end portions on the inlet side and the outlet side of the outer pipe 41, respectively. The plate 45 is inserted between the outer surface of the inner pipe 40 and the inner surface of the outer pipe 41, and the inlet side of the main body 28 is short on the outside of the end faces of the inner pipe 40 and the outer pipe 41.
That is, the plate 45 on the inlet side of the main body 28 projects from the end surface on the inlet side of the outer pipe 41 toward the base exhaust pipe 27.
Therefore, since the end face of the outer pipe 41 is shorter than the end face of the inner pipe 40, the end face portion of the plate 45 on the base exhaust pipe 27 side protrudes to the base exhaust pipe 27 side, and the plate 45 and the outer pipe 41 are easily welded. can do.
The outlet side of the main body 28 of the tail pipe 22 is configured such that the end face of the inner inner pipe 40 is shorter than the pipe end faces of the inner inner pipe 40 and the outer outer pipe 41.

Therefore, it is possible to weld the end face of the plate 45 to the outer pipe 41 from the outlet side mouth of the main body 28 of the tail pipe 22.
Further, by making the inner pipe 40 shorter, it is possible to exert an ejector effect, be pulled by the exhaust gas discharged from the inner inner pipe 40, and suck air through the gap between the inner pipe 40 and the outer pipe 41. As a result, the temperature of the outer peripheral portion of the tail pipe 22 can be kept low.
Further, since the tail pipe 22 is projected by bending the base exhaust pipe 27 portion of the tail pipe 22 upward in the crossing direction with respect to the axial direction of the DPF 16 by the silencer 26 provided on the rear end surface of the DPF 16. , The upper predetermined portion 50 of the grain tank 5 can be brought closer to the silencer 26 on the rear end surface of the DPF 16 as compared with the case where the tail pipe 22 is provided parallel to the axial direction of the DPF 16. The capacity of the grain tank 5 can be increased (FIGS. 5 and 6).

That is, when the tail pipe 22 is provided in the upper predetermined portion 50 in parallel with the axial direction of the DPF 16, the upper predetermined portion 50 of the grain tank 5 is erected at a substantially right angle. Since there is no overhang by the tail pipe 22 of the above, it is possible to avoid interference between the Glen tank 5 and the tail pipe 22 in this part, it is not necessary to cut out the Glen tank 5, and it is possible to configure the structure at an obtuse angle when looking upward at the aircraft. The capacity of the Glen tank can be increased accordingly.
The tip and center of the main body 28 of the tail pipe 22 are attached to the threshing device 3, and the stay 51 at the tip of the main body 28 is provided near the plate 52 connecting the inner pipe 40 and the outer pipe 41 of the tail pipe 22.
Therefore, since the stay 51 is provided at a position near the plate 52 connecting the inner pipe 40 and the outer pipe 41 of the tail pipe 22, the supporting strength of the mounting portion of the stay 51 is strong even if the machine body vibrates. Strong and prevents cracking and breakage.

Further, the stay 53 at the center of the main body 28 of the tail pipe 22 is diagonally attached to the main body 28 (outer pipe 41) of the tail pipe 22 by means such as welding (FIG. 7).
Therefore, the stay 53 is brought into contact with the stay 53 at a length of half or more of the circumferential portion of the main body 28, and the stay 53 is formed obliquely with respect to the main body 28 of the tail pipe 22, so that the stay and the tail pipe 22 come into contact with each other. The part to be (welded) is longer than when it is at a right angle, and it can be contacted (welded) with a length of more than half the circumference of the main body 28, and even if the tail pipe 22 shakes due to mechanical vibration or the like, the force is strong. It will not be dispersed and cracked or damaged in the welded part.
9 to 11 show a state in which the DPF 16 is surrounded by the cover 60.
Therefore, it is possible to prevent dust and the like from accumulating or adhering to the base side portion of the DPF 16 and the tail pipe 22, and it is possible to prevent straw debris from riding on the DPF 16 and igniting, thereby facilitating maintenance.

1 ... Aircraft frame, 2 ... Traveling device, 3 ... Threshing device, 4 ... Cutting device, 5 ... Glen tank, 6 ... Control unit, 16 ... DPF, 16A ... Support stand, 22 ... Tail pipe, 26 ... Silencer, 27 ... base exhaust pipe, 28 ... main body, 29 ... discharge port, 30 ... threshing cylinder, 33 ... bent part, 34 ... second threshing cylinder, 35 ... main body bent part, 36 ... plate, 37 ... fixed part, 38 ... Positioning plate, 40 ... Inner pipe, 41 ... Outer pipe, 42 ... Pipe member, 43 ... Intermediate cylinder, 45 ... Plate, 50 ... Upper predetermined part, 51 ... Stay, 52 ... Plate, 53 ... Stay.

Claims (6)

A threshing device (3) is provided on one side above the machine frame (1) provided with a traveling device (2) below, and a particulate tank (5) is provided on the other side, in front of the Glen tank (5). In a combine in which the control unit (6) is provided and the cutting device (4) is provided in front of the body frame (1), the exhaust gas of the engine (11) provided below the driver's seat of the control unit (6) is exhausted. The DPF (16) of the exhaust gas purification device (15) to be purified is provided between the threshing device (3) and the Glen tank (5), and the DPF (16) has a long shape in the front-rear direction. A combine in which a silencer (26) is attached to the rear portion and a base exhaust pipe (27) of a tail pipe (22) is attached to the silencer (26). In the invention according to claim 1, the DPF (16) and the silencer (26) are arranged in a straight line, and the base exhaust pipe (27) of the tail pipe (22) intersects the axial direction of the DPF (16). Combine arranged in the direction. In the invention according to claim 1 or 2, the tail pipe (22) is composed of two parts, a base exhaust pipe (27) attached to the silencer (26) side and a main body (28) of the tail pipe (22). , A combine in which the middle portion of the base exhaust pipe (27) is formed in a bent portion (33), and the main body (28) has a long shape in the front-rear direction. In the invention according to claim 3, the tip of the base exhaust pipe (27) of the tail pipe (22) is inserted into the base of the main body (28), and the tip of the base exhaust pipe (27) and the base of the main body (28) are overlapped with each other. A combine that is configured to overlap as a double-cylinder configuration. In the invention according to any one of claims 1 to 4, the main body (28) of the tail pipe (22) is a combine having a double cylinder structure of an inner pipe (40) and an outer pipe (41). In the invention according to any one of claims 1 to 5, the tip end portion and the center portion of the main body (28) of the tail pipe (22) are attached to the threshing device 3 side, and the stay at the tip end portion of the main body (28) is attached. A combine in which (51) is provided in the vicinity of a plate (52) connecting the inner pipe (40) and the outer pipe (41) of the tail pipe (22).

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