JP2008074171A - Combine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a combine capable of protecting an output section of an engine and a belt type power transmission mechanism interlocked with the output section of the engine from mud and muddy water splashed by a front part of a crawler type travelling device when travelling. <P>SOLUTION: The combine 1 supporting a machine body frame 2 on the crawler type travelling device 3 and loaded with the engine 21 on the machine body frame 2 and arranged with the output section 21a of the engine 21 over a front part of the crawler type travelling device 3 comprises a mud guard in the machine body frame 2 in a part over the front part of the crawler type travelling device 3. The belt type transmission mechanism 40 for transmitting power from the output section 21a of the engine 21 to a suction fan of a rotary screen 26 is arranged over the mud guard 50. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a combine that supports an airframe frame on a crawler type traveling device, mounts an engine on the airframe frame, and arranges an output portion of the engine above a front portion of the crawler type traveling device.

Conventionally, an airframe is supported on a crawler type traveling device, an engine, a radiator, and a cooling fan are provided in an engine room formed on the airframe, and an outside air introduction cover is attached to the outside of the engine room. Thus, a combine that introduces outside air after removing dust with a rotary screen provided in the outside air introduction cover into the engine room as radiator or engine cooling air is known (for example, see Patent Document 1).
Japanese Patent Laid-Open No. 10-286018

  In a conventional combine, the dust adhering to the outer surface of the rotary screen is sucked by a suction fan and discharged to the outside of the machine. This suction fan is composed of an engine output unit and a belt-type power transmission mechanism. It was linked and linked to be driven by the engine. However, mud and muddy water splashed at the front part of the crawler type traveling device when traveling in a soft field etc. are scattered toward the engine output part and the belt type power transmission mechanism through the gap at the front part of the body frame, The durability and maintainability of the output part of the engine and the belt type power transmission mechanism may be lowered.

  The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

  That is, according to the first aspect, the airframe is supported on the crawler type traveling device, the engine is placed on the airframe frame, and the output portion of the engine is disposed above the front portion of the crawler type traveling device. In the combine, a mudguard is provided in a portion of the fuselage frame located above the front portion of the crawler type traveling device.

  According to a second aspect of the present invention, a suction fan for a rotary screen is disposed above the mud guard, and the power from the output portion of the engine is transmitted to the suction fan by a belt type power transmission mechanism.

  According to a third aspect of the present invention, the mudguard is fixed to the upper side of the body frame.

  As effects of the present invention, the following effects can be obtained.

  In claim 1, when the combine travels in a soft field or the like, mud or muddy water splashed at the front part of the crawler type traveling device is blocked by the mudguard on the way to the upper front part of the fuselage frame, The output part can be protected.

  In claim 2, when the combine travels in a soft field or the like, even if mud or muddy water is splashed at the front part of the crawler type traveling device, the mudguard is on the way to the upper front part of the fuselage frame. Can be blocked by. Therefore, it becomes possible to prevent damage and deterioration of the belt-type power transmission mechanism due to adhesion of mud and muddy water, and the durability and maintainability of the belt-type power transmission mechanism can be improved.

  According to the third aspect of the present invention, the exhaust air discharged from the suction fan can be diffused by the mudguard, and dust contained in the exhaust air can be prevented from accumulating on the front part of the body frame.

  Next, embodiments of the invention will be described.

  1 is a left side view showing the overall configuration of the combine, FIG. 2 is a right side view showing the overall configuration of the combine, FIG. 3 is a plan view of the engine room portion, FIG. 4 is a front view of the engine room portion, FIG. Is a plan view of the mudguard installation part, FIG. 6 is a front view of the mudguard installation part, and FIG. 7 is a side view of the mudguard installation part.

  As shown in FIGS. 1 and 2, the combine 1 supports the machine frame 2 with a crawler type traveling device 3 and drives the crawler type traveling device 3 with an engine 21 mounted on the body frame 2 to move forward or It is configured to be able to travel backward. And in the combine 1, the cutting part 4 which cuts a grain cocoon in the front part of the body frame 2 and conveys it to the back of the body frame is provided, and the harvested corn grain from the cutting part 4 is threshed in the left and right front and rear middle parts of the body frame 2. A threshing unit 5 and a sorting unit 6 for sorting the grains threshed by the threshing unit 5 are arranged up and down. At the rear part of the machine body frame 2, a slaughter processing unit 7 is provided that discharges cereals threshed by the threshing unit 5 to the outside as waste.

  A grain tank 8 is provided at the rear right side of the machine body frame 2 to store grains conveyed from the sorting unit 6 by the milling cylinder. From the rear of the grain tank 8 upward, the grains in the grain tank 8 are removed from the machine body. A discharge auger 9 for discharging to the outside is disposed. In front of the Glen tank 8 and on the right front part of the fuselage frame 2, an operating device 15 such as a steering handle 11 and various operating levers, a driver's seat 12 and the like are provided in the cabin 13. A transmission 19 and an engine 21 are provided so as to be positioned below the driving operation unit 15.

  As shown in FIGS. 3 to 6, the engine 21 is disposed in an engine room 20 formed below the cabin 13. In the engine room 20, a radiator 22 is disposed on the right side of the engine 21, and a cooling fan 23 is disposed between the engine 21 and the radiator 22. The cooling fan 23 is fixed to an output shaft of an output portion 21 a provided on the right side from the engine 21, and can be driven to rotate from the engine 21 via a belt or the like. An outside air introduction cover 25 is disposed on the right outside of the engine room 20 and on the right side of the radiator 22. The outside air introduction cover 25 is supported by a support frame standing upright from the body frame 2 at the rear so that the outside air introduction cover 25 can turn to the side of the body, and the engine room 20 can be opened and closed.

  In the outside air introduction cover 25, a circular outside air introduction port 25 a for taking outside air as cooling air into the engine room 20 is provided in a substantially central portion, and when the cooling fan 23 is rotationally driven by the engine 21, suction is performed. The cooling air can be introduced into the engine room 20 from the outside air inlet 25a by force. A rotary screen 26 is provided at the outside air introduction port 25a of the outside air introduction cover 25 as dustproof means for preventing dust from being introduced into the engine room 20 together with cooling air.

  When the cooling air is sucked by the cooling fan 23 through the rotary screen 26, the rotary screen 26 removes dust by adhering to the outer surface so that clean air can be introduced into the engine room 20. It is configured. Thus, in the combine 1, the cooling air sucked by the cooling fan 23 when the engine 21 is driven is cleaned by the rotary screen 26 and introduced into the engine room 20 to cool the radiator 22 and further the engine 21. It has become.

  Also, as shown in FIG. 1, a cylindrical intake duct 27 is disposed on the outer surface of the rotary screen 26, and is fixed to and supported by the outside air introduction cover 25. The intake duct 27 extends radially from the central portion with the intake port 27 a facing the outer surface of the rotary screen 26, and is connected to a fan case 31 disposed at the right front portion of the engine room 20 via a suction pipe 32. Communication connection is established. The fan case 31 is disposed above the front portion of the crawler type traveling device 3 and is fixed on the front portion of the body frame 2. A suction fan 30 is disposed in the fan case 31 and can be driven to rotate by the engine 21.

  Specifically, for example, as shown in FIG. 7, the driven shaft 35 is rotatably supported by the fan case 31 of the suction fan 30, and the drive shaft 39 provided on the output portion 21 a of the engine 21 is connected to the belt. The power transmission mechanism 40 is connected. The belt-type power transmission mechanism 40 includes a drive pulley 41, a driven pulley 42, a tension pulley 43, and a belt 44. The drive pulley 41 is fixed to the drive shaft 39, and the driven pulley 42 is fixed to the driven shaft 35. A belt 44 is wound around these pulleys 41, 42, and 43. Thus, the power from the engine 21 is transmitted from the output portion 21a to the driven shaft 35 via the belt-type power transmission mechanism 40, so that the suction fan 30 is rotationally driven.

  In the fan case 31 in which the suction fan 30 is provided, a suction pipe 32 is connected to a substantially central portion on the right side surface so that dust from the intake duct 27 can be sucked into the case. Further, a discharge port 31a is formed at the front portion of the fan case 31, and is opened so as to face the front lower side. When the suction fan 30 is rotationally driven as described above, dust adhering to the outer surface of the rotary screen 26 is sucked into the intake duct 27 by the suction force, and then the broken line shown in FIGS. It is sent to the fan case 31 through the suction pipe 32 as indicated by the arrow, and is included in the exhaust air from the discharge port 31a of the fan case 31 and discharged to the vicinity of the front lower side of the crawler type traveling device 3.

  In such a configuration, the output portion 21a of the engine 21 and the belt-type power transmission mechanism 40 are longitudinally extended in the front-rear direction above the front portion of the crawler belt 3a of the crawler traveling device 3 on the right side in the traveling direction together with the suction fan 30. It is disposed so as to be positioned above the front part of the body frame 2 formed in a frame shape with a frame or a horizontal frame extending in the left-right direction. A mud guard 50 is disposed at the front of the machine body frame 2 to shield between the output unit 21a of the engine 21 and the belt type power transmission mechanism 40 and the crawler type traveling device 3. The mud guard 50 protects the output portion 21a of the engine 21 and the belt-type power transmission mechanism 40 from mud and muddy water that the crawler-type traveling device 3 splashes at the front portion of the crawler belt 3a. It is comprised from the rectangular plate-shaped member.

  As shown in FIGS. 5, 6, and 7, the mudguard 50 is fixed to the upper side of the front portion of the body frame 2 so that the top surface is substantially the same, and is positioned above the front portion of the crawler type traveling device 3. Is arranged. Specifically, the front end is located at the front end of the fuselage frame 2 in front of the crawler type traveling device 3, the rear end is located near the lower portion of the fan case 31 of the suction fan 30, and the left end is the output portion of the engine 21. 21a and the belt-type power transmission mechanism 40 are located on the left side, and the right end is arranged at the left end of the body frame 2. Thus, in the upper part of the crawler type traveling device 3, the vertical gap between the vertical frames 2 a and 2 b and the horizontal frames 2 c and 2 d in the front part of the body frame 2 is configured to be closed by the mud guard 50. .

  As a result, when the combine 1 travels in a soft field or the like, particularly when traveling backward, mud or muddy water is trapped by the front portion of the crawler belt 3a of the crawler type traveling device 3 as indicated by the black arrows shown in FIGS. The mud and muddy water will hit the mudguard 50 fixed to the front part of the fuselage frame 2 and will not be scattered upward from the front part of the fuselage frame 2 even if it jumps up from the upper part to the rear upper part. It has become. That is, mud and muddy water splashing upward from below the front part of the body frame 2 are blocked by the mudguard 50 so that the output part 21a of the engine 21 and the belt-type power transmission mechanism 40 are not reached.

  Further, at the front part of the body frame 2, when exhaust air including dust from the outlet 31 a of the fan case 31 is exhausted by the suction fan 30, it flows toward the mudguard 50 and diffuses in the front and left and right directions. While being discharged to the front of the body frame 2. Here, as described above, since the height of the front surface of the fuselage frame 2 and the upper surface of the mud guard 50 are substantially the same, when exhaust air is exhausted from the fan case 31, dust is removed from the fuselage frame 2. It is released without accumulating on the top.

  As described above, the body frame 2 is supported on the crawler type traveling device 3, the engine 21 is placed on the body frame 2, and the output portion 21 a of the engine 21 is connected to the front portion of the crawler type traveling device 3. In the combine 1 disposed above, the crawler type traveling device 3 is provided when traveling on a soft field or the like by providing a mud guard 50 in a portion located above the front portion of the crawler type traveling device 3 of the body frame 2. The mud or muddy water splashed up at the front of the engine frame 2 is blocked by the mudguard 50 on the way to the upper part of the front of the body frame 2, and the output 21 a of the engine 21 can be protected.

  Further, the suction fan 30 for the rotary screen 26 is disposed above the mud guard 50, and the power from the output portion 21a of the engine 21 is transmitted to the suction fan 30 by the belt-type power transmission mechanism 40. Therefore, even when mud or muddy water is splashed up at the front part of the crawler type traveling device 3 when traveling on a soft field or the like, the mud guard 50 blocks these on the way to the upper front part of the body frame 2. Can do. Therefore, it is possible to prevent damage and deterioration of the belt 44 of the belt type power transmission mechanism 40 due to adhesion of mud and muddy water, and the durability and maintainability of the belt type power transmission mechanism 40 can be improved.

  Further, by fixing the mud guard 50 on the upper side of the body frame 2, the exhaust air discharged from the suction fan 30 is diffused by the mud guard 50, and dust contained in the exhaust air is accumulated on the front part of the body frame 2. Can be prevented.

The left view which showed the whole structure of the combine. The right view which showed the whole structure of the combine. The top view of an engine room part. The front view of an engine room part. The top view of a mud guard installation part. The front view of a mud guard installation part. The side view of a mud guard installation part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Combine 2 Airframe frame 3 Crawler type traveling device 21 Engine 21a Output part 26 Rotary screen 30 Suction fan 40 Belt type power transmission mechanism 50 Mudguard

Claims (3)

  In a combine in which an airframe is supported on a crawler type traveling device, an engine is mounted on the airframe frame, and an output portion of the engine is disposed above a front portion of the crawler type traveling device, the crawler of the airframe frame The combine characterized by providing the mudguard in the part located above the front part of the type traveling device.   The suction fan for a rotary screen is arrange | positioned above the said mud guard, It was set as the structure which transmits the motive power from the output part of the said engine to this suction fan with a belt-type power transmission mechanism. Combine.   The combine according to claim 2, wherein the mudguard is fixed to an upper side of the body frame.

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