JP4537692B2 - Combine - Google Patents

Description

  The present invention relates to a combine that removes deposits on an engine cover.

2. Description of the Related Art Conventionally, a combiner including a suction fan that draws cooling air into an engine room that houses an engine and a dust-proof engine cover provided at an air intake port of air introduced into the engine room is known ( Patent Document 1). At this time, since the intake air to the engine room is forcibly sent to the engine room side by the suction fan, dust, dust, and the like adhere to the engine cover at the intake port due to the suction force of the suction fan. Since the engine cover will eventually become clogged when this dust or other deposits adhere to the engine cover, the combine has a deposit removal mechanism that removes the deposits by reversely rotating the suction fan. Is provided.
JP 9-1332041 A JP-A-9-189227

  However, when the suction fan rotates in the reverse direction, the alternator and the suction fan driven by the belt by the driving force from the engine together with the suction fan once stop, and then the suction fan reverses. There is a drawback that the belt may be deteriorated due to slippage or slippage, or belt slippage.

The combine of the present invention for solving the above-described problem is a dust fan 8 provided in a suction fan 8 that draws cooling air into an engine room 6 that houses the engine 7 and an air inlet of the air introduced into the engine room 6. In the combine that is configured to rotate the suction fan 8 by the driving force output from the engine 7, the suction fan 8 is driven concentrically with the water pump pulley 18 that drives the water pump 15. A fan pulley 19 is rotatably provided, and includes a driving belt 23 that transmits driving force to the water pump pulley 18 and a fan driving belt 39 that transmits driving force to the fan pulley 19, and a driving stop mechanism for the suction fan 8 is provided. The drive of the drive unit driven by the output from the engine 7 excluding the suction fan 8 can be stopped. In order to stop the driving of the suction fan 8 only, the transmission of the fan driving belt 39 to the fan pulley 19 is cut off while the transmission of the driving belt 23 to the water pump pulley 18 is maintained, and the suction fan 8 is driven. The drive stop mechanism is configured to stop, and by stopping the suction fan 8 by the drive stop mechanism, the suction force to the engine cover 14 of the deposits adhering to the engine cover 14 is cut off and the deposits are removed. As a drive unit driven by the output from the engine 7, the water pump 15 and the alternator 16 are provided. The output pulley 22 of the engine 7, the water pump pulley 18 that drives the water pump 15, and the alternator 16 are provided. An alternator pulley 17 for driving and a fan pulley 19 for driving the suction fan 8 A drive belt 23 wound between the output pulley 22 of the engine 7, the water pump pulley 18 and the alternator pulley 17, and two tension pulleys 24, 26 slidably supported in sliding contact with the drive belt 23; A fan output pulley 38 that is integrally attached to one tension pulley 26 and a fan drive belt 39 that is wound between the fan output pulley 38 and the fan pulley 19 are provided. Is composed of an interlocking mechanism that interlocks and swings the two tension pulleys 24 and 26, and the interlocking mechanism is in a state of sliding contact with the drive belt 23 of the tension pulley 26 provided with the fan output pulley 38. 19 is driven, and when the tension pulley 26 is separated from the drive belt 23, the drive of the fan pulley 19 is stopped. In addition, the first feature is that the other tension pulley 24 swings both pulleys 24 and 26 so as to maintain the tension of the drive belt 23 .

Secondly, a removing device 12 for removing deposits adhering to the dust-proof engine cover 14 is provided, and the removing device 12 is configured to operate when the suction fan 8 is stopped.

  According to the structure of the present invention configured as described above, by stopping the driving of the suction fan by the drive stop mechanism, the suction force that attaches the deposits such as dust and dust to the engine cover is removed. The deposits are removed from the engine cover, and the engine cover can be prevented from being clogged.

  At this time, since driving of the suction fan is stopped without stopping driving of the driving part driven by the output from the engine excluding the suction fan, for example, the driving of the alternator and the water pump as the driving part does not stop. Therefore, overheating and the like can be prevented, and for a short period of time, the deposit removal operation can be performed during work travel.

  In particular, the suction fan drive stop mechanism is composed of an interlocking mechanism that swings two tension pulleys in an interlocked manner, thereby driving the suction fan without stopping the drive belt from rotating (driving the fan drive belt). There is an effect that it is possible to prevent the drive belt from squeaking, slipping, deterioration due to slipping, and the like. Further, since the drive belt does not loosen, there is an advantage that a loose belt guide becomes unnecessary.

  On the other hand, a removal device that removes the adhering matter adhering to the engine cover is provided, and the removal device is operated in accordance with the stop of the suction fan, thereby removing the suction force that adheres the adhering matter to the engine cover by the drive stop mechanism. In addition, there is an effect that the deposit can be easily and surely removed from the engine cover by forcibly removing the deposit by the removing device.

  FIG. 1 is a side view of a combine adopting the present invention, and a driver's seat 4 is provided on the right side of an airframe 2 provided with a crawler type traveling device 1 so as to be covered with a cabin 3. In the driver's seat 4, a seat (not shown) is provided on the rear side as in the prior art, and an engine room 6 is provided below the cabin 3 and below the seat.

  An engine 7 is mounted in the engine room 6, and as shown in FIG. 2, a suction fan 8 is disposed on the right side of the engine 7, a radiator 9 is disposed on the right side of the suction fan 8, and the radiator 9 An oil cooler 11 is disposed on the right side of the motor, and an electric fan 12 is disposed on the right side of the oil cooler 11. The right side of the electric fan 12 mainly introduces cooling air (air) into the engine room 6. It has become an intake port.

  The intake port is covered with an engine cover 14 located on the door 13 side of the cabin 3 (on the right side of the airframe 2). The engine cover 14 has a net shape that functions as a filter, filters dust and the like, and introduces cooling air into the engine room 6. At this time, the introduction of air into the engine room 6 is forcibly performed by the rotational drive of the suction fan 8 described above.

  That is, when the suction fan 8 is driven to rotate, wind blown from the outside to the engine room 6 through the engine cover 14 is generated, and this wind is used as cooling air. Then, the radiator 9 and the oil cooler 11 are cooled by the air (cooling air) introduced by the rotational drive of the suction fan 8.

  The electric fan 12 is a fan for blowing the air in the engine room 6 to the outside through the engine cover 14 and is driven at a timing described later. Further, as in the prior art, an alternator 16 and a water pump 15 are attached to the engine 7 side. As shown in FIG. 3, the alternator 16 is driven by an alternator pulley 17 and the water pump 15 is driven by a water pump pulley 18, respectively. The The aforementioned suction fan 8 is driven by a fan pulley 19 concentric with the water pump pulley 18.

  Next, the drive configuration of the above-described water pump 15, alternator 16, and suction fan 8 will be described. As shown in FIGS. 3 and 4, an output pulley 22 is attached to the output shaft 21 of the engine 7, and a drive is provided between the output pulley 22, the alternator pulley 17 and the water pump pulley 18. The belt 23 is wound around. At this time, the drive belt 23 is in sliding contact with the out tension pulley 24 from the outside and the tension pulley 26 from the inside.

  At this time, the out tension pulley 24 is supported by an out tension arm 27 that is pivotally supported with the output shaft 21 as an axis, and the intention pulley 26 has the drive shaft of the water pump 15 as an axis. The tension pulleys 24 and 26 are slidably contacted with the drive belt 23 in a swingable manner.

  An interlocking mechanism is provided between the tension pulleys 24 and 26 so that both the tension pulleys 24 and 26 swing in conjunction with each other. The swing of 24 is controlled. The interlock mechanism includes an tension spring 29 provided between the tension arm 28 and the body 2 side, an tension spring 31 provided between the tension arm 28 and the tension arm 27 side, and an tension arm. Intention arm drive mechanism 32 for swinging and driving 28.

  The intention arm drive mechanism 32 includes an electric motor 33, a sector gear 34 that is driven to swing by the electric motor 33, an arm 36 that is integrally attached to the sector gear 34, and the arm 36 and the tension. It is comprised from the wire 37 which connects the arm 28. FIG. The tension spring 29 urges the tension pulley 26 in a direction in which the tension pulley 26 is slidably contacted with the drive belt 23. As a result, the tension arm 28 is swung by the swing of the sector gear 34. Position (swing angle) is set.

  Further, since one end of the out tension spring 31 is attached to the tension arm 28, the out tension pulley 24 is urged in a direction in which the out tension pulley 24 slides on the drive belt 23 with the tension arm 28 as a reference. As shown in FIGS. 3 and 5, the tension of the drive belt 23 is maintained while the tension pulleys 24 and 26 are in sliding contact with the drive belt 23, and the output pulley 22 to the alternator pulley 17 and the water pump pulley 18 are maintained. Then, the driving force is transmitted to the alternator 16 and the water pump 15.

  On the other hand, the intention pulley 26 is provided with a fan output pulley 38 concentrically (coaxially) with the intention pulley 26, and a fan drive belt 39 is hung between the fan output pulley 38 and the fan pulley 19. It has been turned. Therefore, as described above, when the intention pulley 26 is in sliding contact with the drive belt 23, the intention pulley 26 rotates, and the fan pulley 19 is rotated via the fan output pulley 38 and the fan drive belt 39. The fan 8 is rotationally driven.

  Then, as shown in FIG. 6, when the electric motor 33 is driven and the intention pulley 26 is moved away from the drive belt 23, the rotation drive of the tension pulley 26 is stopped and the rotation drive of the suction fan 8 is stopped. . Since the intention pulley 26 can freely rotate, the suction fan 8 can freely rotate, and the suction fan 8 is not locked.

  At this time, as the tension arm 28 swings, the out tension arm 27 swings via the out tension spring 31, and the out tension pulley 24 applies tension to the drive belt 23, whereby the tension of the drive belt 23 is reduced. The driving force is transmitted from the output pulley 22 to the alternator pulley 17 and the water pump pulley 18, and the alternator 16 and the water pump 15 are driven.

  When the drive of the suction fan 8 is stopped, the tension pulley 26 swings and the tension of the drive belt 23 is gradually weakened by the swing of the tension arm 28. As the (intention arm 28 swings), the out tension arm 27 swings through the out tension spring 31, and the swinging movement of the out tension arm 27 causes the out tension pulley 24 to swing. Since the tension is gradually applied to the belt 23, the drive belt 23 is always kept in tension, and the alternator 16 and the water pump 15 do not stop.

  Then, when the suction fan 8 is started to be driven, the suction fan 8 is driven without stopping the drive of the alternator 16 and the water pump 15 by following the reverse of the drive stop. That is, the above-mentioned interlocking mechanism constitutes a drive stop mechanism of the suction fan 8, and operates the on / off of the suction fan 8 by driving the intention arm drive mechanism 32 by the electric motor 33. As described above, the transmission rotation of the drive belt 23 is not stopped, and the alternator 16 and the water pump 15 are always driven.

  On the other hand, as described in the section of “Background Art”, since the intake air to the engine room 6 is forcibly sent to the engine room 6 side by the suction fan 8, Dust or dust adheres by the suction force of the suction fan 8. When the dust or other deposits such as dust adhere to the engine cover 14, the engine cover 14 eventually becomes clogged.

  Therefore, by stopping the suction fan 8 by the drive stop mechanism (interlocking mechanism), the suction force for attaching the deposit to the engine cover 14 is stopped, and the deposit is dropped from the engine cover 14 and removed. The engine cover 14 can be prevented from being clogged.

  At this time, the drive stop mechanism of the suction fan 8 is composed of an interlocking mechanism that swings the two tension pulleys 24 and 26 in conjunction with each other as described above, so that the suction of the drive belt 23 is stopped without stopping at all. Since the drive of the fan 8 (drive of the fan drive belt 39) is turned on and off, the drive belt 23 is prevented from squeaking, slipping, and belt deterioration due to slipping. Further, since the drive belt 23 does not loosen, it is not necessary to guide the loose belt.

  Further, when the suction fan 8 is stopped, only the suction fan 8 is stopped, and the drive of the alternator 16 and the water pump 15 is not stopped. Removal work can be performed.

  Then, when the suction fan 8 is stopped, the electric fan 12 described above is operated, and air is blown from the inside of the engine cover 14 to the outside of the engine room 6 to the engine cover 14 as described above. The adhering material that has lost the adsorbing power is blown off by the air blow by the electric fan 12 and is easily and reliably removed from the engine cover 14. That is, in the present embodiment, a removing device that forcibly removes the deposits attached to the engine cover 14 by the electric fan 12 is configured.

  Since the electric fan 12 is electrically turned on and off, and the drive stop mechanism is also turned on and off by electrically operating the electric motor 33, in this embodiment, the suction fan 8 is turned off. The electric circuit is configured such that when the electric motor 33 is driven to operate, the electric fan 12 automatically operates. As a result, the electric fan 12, which is a deposit removing device, automatically operates when the suction fan 8 is stopped, and the deposit adhering to the engine cover 14 is removed as described above.

  In this embodiment, an example in which the electric fan 12 is used as the deposit removing device has been described. However, another mechanism, for example, a brush or the like is used as the removing device so that the suction fan 8 can be operated when the drive is stopped. It may be configured.

It is a right view of a combine. It is a principal part rear view of the engine part in an engine room. It is a principal part right view of the engine part in an engine room. It is an expansion | deployment rear view of the transmission part of a suction fan, an alternator, and a water pump. It is a principal part right view of the engine part of the drive state of a suction fan. It is a principal part right view of the engine part of the stop state of a suction fan.

6 Engine room 7 Engine 8 Suction fan 12 Electric fan (removal device)
14 Engine cover (cover)
DESCRIPTION OF SYMBOLS 15 Water pump 16 Alternator 17 Alternator pulley 18 Water pump pulley 19 Fan pulley 22 Output pulley 23 Drive belt 24 Out tension pulley (tension pulley)
26 Intention pulley (tension pulley)
38 Fan output pulley 39 Fan drive belt

Claims (2)

A suction fan (8) that draws cooling air into the engine room (6) that houses the engine (7), and a dust-proof engine cover (provided at the air inlet for the air introduced into the engine room (6)) 14), and the suction fan (8) is rotated by the driving force output from the engine (7), and the water pump pulley (18) for driving the water pump (15) is suctioned concentrically. A fan pulley (19) for driving the fan (8) is rotatably provided, and a driving belt (23) for transmitting the driving force to the water pump pulley (18) and a fan driving belt for transmitting the driving force to the fan pulley (19). (39), provided with a drive stop mechanism for the suction fan (8), and driven by the output from the engine (7) excluding the suction fan (8). In order to stop only the driving of the suction fan (8) without stopping the driving of the moving part, the fan driving belt (39) is used while maintaining the transmission of the driving belt (23) to the water pump pulley (18). The drive stop mechanism is configured to stop driving the suction fan (8) by interrupting transmission to the fan pulley (19), and the engine cover (14) is stopped by stopping the suction fan (8) by the drive stop mechanism. The water pump (15) serves as a drive unit driven by the output from the engine (7) so as to cut off the suction force to the engine cover (14) side of the adhering matter adhering to the engine and remove the adhering matter. And an alternator (16), an output pulley (22) of the engine (7), a water pump pulley (18) for driving the water pump (15), An alternator pulley (17) for driving the alternator (16), a fan pulley (19) for driving the suction fan (8), an output pulley (22) of the engine (7), a water pump pulley (18), and an alternator pulley ( 17), a drive belt (23) wound between the two, and two tension pulleys (24), (26) supported in a swingable manner in sliding contact with the drive belt (23), and one tension pulley (26 And a fan drive pulley (38) integrally attached to the fan output pulley (38) and a fan drive belt (39) wound between the fan output pulley (38) and the fan pulley (19). The drive stop mechanism of 8) is constituted by an interlocking mechanism that interlocks and swings the two tension pulleys (24) and (26), and the interlocking mechanism includes the fan output pulley ( The fan pulley (19) is driven in a sliding contact state of the tension pulley (26) provided with the drive belt (23) and the tension pulley (26) is separated from the drive belt (23). A combine that stops the drive of (19) and swings both pulleys (24), (26) so that the other tension pulley (24) maintains the tension of the drive belt (23) . Removing apparatus for removing deposits adhering to the engine cover dustproof (14) to (12) is provided, claim said removing device (12), and configured to actuate in accordance with the stop of the suction fan (8) 1 combine.

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