JP2010077876A - Engine hanger - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To construct an engine hanger having desired strength with a structure as simple as possible by reducing members dedicated for hanging to simplify a structure, and eliminating work exclusive for hanging. <P>SOLUTION: This hanger is provided with an angle change mechanism 3 changing angles of a wind generating blade 2 with respect to a rotor 21 driven and rotated by engine power around an axial center of a bearing member 25. A locking part 46c for engine hanging is provided on an attachment fitting 45 for attaching the angle change mechanism 3 on an engine body 60. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an engine lifting tool that can be conveniently used when lifting an engine with a crane or the like.

As a lifting tool used for lifting an engine, those having structures described in [1] and [2] below are known.
[1] In a soundproof type engine, a lifting portion is provided on the upper surface side of a soundproof case covering the engine so that the engine can be lifted together with the case (see Patent Document 1).
[2] A cover for reducing noise generated from the cylinder head is provided, a lifting member insertion hole is formed in the cover, and the insertion hole is normally closed with a bolt. The lifting member can be screwed to the cylinder head through the insertion hole (see Patent Document 2).

Japanese Patent Laid-Open No. 7-119460 (paragraph [0013], FIG. 1 and FIG. 2) JP 2005-127274 A (paragraph [0055], FIG. 1, FIG. 3, FIG. 4, FIG. 9)

The technique shown in the above [1] can be applied only to a structure in which the engine is built in the soundproof case, and a structure having high strength is also required as the soundproof case, and there is a problem that the overall weight increases. is there.
The technique shown in the above [2] is useful in that it can be configured with a small and simple structure from the viewpoint of using only a lifting member such as an I-bolt as the lifting tool. It is necessary to process a structure for screwing the lifting member on the engine body. In addition, it is necessary to always prepare a lifting member for screwing so that it is not lost, and in addition, work for attaching the lifting member is also required prior to lifting work. There is also a problem.

  An object of the present invention is to construct an engine lifting tool having a required strength with a structure as simple as possible without using a dedicated lifting member or a dedicated work for lifting.

[Solution 1]
In order to solve the above-mentioned problems, the technical means in the engine lifting tool of the present invention, as described in claim 1, is a cooling fan that is hung up and down on a self-propelled vehicle body and supported by the engine body. Is composed of a rotating body that is rotationally driven by engine power, and a plurality of wind-up blades supported by a shaft support member having a shaft portion along the radial direction of the rotating body. In addition to an angle changing mechanism for changing the angle around the axis of the shaft support member, a mounting bracket for mounting the angle changing mechanism to the engine body is provided, and a locking portion for lifting the engine is provided on the mounting bracket. It is provided.

[Action and effect]
As described above, the engine lifting tool of the present invention according to the solution 1 has the following actions and effects.
That is, since the mounting bracket provided on the engine body is provided with a locking portion for lifting the engine, it can be applied to an engine not provided with a soundproof case, and the angle changing mechanism is mounted on the engine body. The number of parts can be reduced because the lifting parts are saved by using mounting brackets.
In addition, since the fittings that are inevitably used are provided with locking portions, there is little processing to attach the lifting member to the engine body. Further, it is not necessary to prepare for attaching a lifting member for every lifting operation.

  The mounting bracket is for mounting an angle changing mechanism provided at the mounting position of the engine cooling fan, and the engine cooling fan is for cooling the entire engine. It is provided in the central part of the direction. Therefore, the position of the mounting bracket is also provided close to the central portion in the left-right direction, and there is little possibility that the left-right balance will be lost during lifting.

  As a result, there is an advantage that a lifting tool having a structure in which the number of parts is reduced and the manufacturing process and the assembling work are simple can be obtained by reducing the dedicated lifting member.

[Solution 2]
According to a second means for solving the problem of the present invention, the operating portion of the angle changing mechanism and the engaging portion for lifting the engine are both viewed in the direction of the rotational axis of the rotating body. It is characterized in that it is provided at a position above the rotating body, and is provided at a position shifted from each other in the rotating direction of the rotating body.

[Action and effect]
As described above, the engine lifting tool of the present invention according to the solving means 2 has the following effects in addition to the same effects as the invention according to the solving means 1.
That is, since the operating portion of the angle changing mechanism and the engaging portion for lifting the engine are provided at positions displaced from each other in the rotation direction of the rotating body, the angle changing mechanism and the mounting bracket of the engine are The axial length of the engine as a whole can be avoided from being longer than the case of being separated in the axial direction of the engine, and the angle changing mechanism and the mounting bracket of the engine are separated from each other in the vertical direction of the engine. Compared with the case where it is provided, it is advantageous in that the height of the whole engine in the vertical direction can be avoided.

[Solution 3]
According to a third means for solving the problem of the present invention, the angle changing mechanism moves the blade operating body provided on the outer peripheral portion of the rotating body in the axial direction of the rotating body. The shift operation member that moves the blade operation body in the axial direction intersects the vertical line and the horizontal line when viewed in the axial direction of the rotating body. It is configured so that it swings around an inclined swinging shaft center, and the locking part for lifting the engine formed on the mounting bracket is positioned on or near the vertical line passing through the rotating shaft center of the rotating body. The shift operation member is characterized in that the upper end side of the shift operation member can be moved and operated in the axial direction of the rotating body at a position away from the mounting bracket.

[Action and effect]
As described above, the engine lifting tool of the present invention according to the solving means 3 has the following effects in addition to the same effects as the invention according to the solving means 2.
That is, the shift operation member that moves and operates the blade operating body that changes the angle of the wind-up blade in the axial direction of the rotating body is an inclined axis that intersects the vertical line and the horizontal line in the axial direction of the rotating body. By being configured to swing around, the engine lifting locking portion formed on the mounting bracket can be positioned on or near the vertical line passing through the rotational axis of the rotating body.
Therefore, the engine can be lifted on a vertical line passing through the rotational axis of the rotating body of the cooling fan provided in the central portion of the engine in the left-right direction, and stable with little disruption of the left-right balance from the start of lifting. There is an advantage that it is easy to lift the engine well.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[Overall structure of the combine]
First, the structure of the entire combine to which the engine lifting tool of the present invention is applied will be described.
FIG. 1 shows the entire side surface of the self-removing combine, and FIG. 2 shows the entire plane. This combine is provided with a body frame 1 formed in a frame shape by a square pipe material or the like, and a pair of left and right crawler type traveling devices 10 are provided at the lower part of the body frame 1. A cutting and conveying device 13 connected to the front and left front portions of the body frame 1 so as to be able to move up and down is provided. A threshing device 4 is mounted on the left rear portion of the body frame 1, and a grain storage device is mounted on the right rear portion of the body frame 1. 5, and further includes an engine 6 provided at the right front portion of the body frame 1, a boarding operation unit 11 formed above the engine 6, and the like.

  On the body frame 1, as shown in FIG. 3, the threshing device 4 and the grain storage device 5 described above are mounted in a state of being distributed on both sides of the pair of left and right main frames 1A, 1A. A clutch operating device A for controlling on / off of various working clutches using the power of a common electric motor 70 is provided at a position intermediate between 1A and 1A and on the right side of the place where the left threshing device 4 is present. Has been deployed. The location of the clutch operating device A can be operated by looking into the right lateral side of the machine body when the grain storage device 5 is swung around the rear longitudinal axis y to be in an open posture. This is a possible position.

[Configuration of boarding operation section]
As shown in FIGS. 1 and 2, the boarding operation unit 11 includes a shift lever 11A that performs a forward / reverse shift operation of the aircraft, and a steering operation lever 11B that performs a steering operation of the aircraft. An operation panel 11C is provided for commanding on / off of driving and operation order.
This operation panel 11C is equipped with a pillow handling threshing start button B1, a cutting and threshing start button B2, a high speed cutting and threshing start button B3, a grain discharge button B4, and a work end button B5. Each of these buttons B1, B2, B3, B4, and B5 controls the operation of the clutch operating device A in cooperation with the control device 100 to be described later, and determines whether or not various working devices are driven and the drive start order. Control.

That is, when the pillow handling threshing start button B1 is operated, the threshing device 4 and the feed chain 42 are driven, and the other working devices are in a stopped state, and the hand-held threshing operation in a state where the machine body is stopped is performed. It becomes possible. When the harvesting / threshing start button B2 is operated, the harvesting / conveying device 13 is driven in addition to the above-described threshing device 4 and the feed chain 42.
Further, when the high-speed mowing and threshing start button B3 is operated, the mowing transmission mechanism 16 is switched to the high speed side, and the above mowing and threshing work can be performed at a high speed.
Further, when the grain discharge button B4 is operated, all the operations of the above-mentioned mowing and threshing work-related equipment are stopped, and only the grain storage device 5 is driven to enter a work state in which the grain is discharged.
When the work end button B5 is pressed, the drive of all the work devices that have been driven is stopped and the work state is finished.

[Composition of the motor section]
As shown in FIGS. 3 to 5, the engine 6 is mounted on the body frame 1 with the cooling fan 2 and the muffler 68 supported by the engine body 60. A cooling radiator 61 is provided on the outer side of the cooling fan 2 provided on the outer right side of the engine body 60 and further on the outer right side of the radiator 61 from the outside. An opening 63 for introducing outside air with a dustproof net 63a for suppressing the inhalation of dust is provided.
The opening 63 is formed integrally with a hood 62 that covers the engine 6, and the driver's seat 17 is supported on the hood 62.
A muffler 68 for silencing is attached on the upper side of the engine body 60 on the opposite side of the body of the engine body 60 from the side on which the cooling fan 2 is provided. A lower side of the main body 60 is detachably fixed to the body frame 1 via a fixing bolt 1B with a vibration isolating material. The bonnet 62 is configured to be swingable and openable around a lateral axis (not shown) on the outer side of the machine body.

  The cooling fan 2 is configured to be freely switchable between a forward direction and a reverse direction by changing the blade angle. Therefore, external air is supplied to the radiator 61 through the inside of the dust net 63a and the bonnet 62 by the driving of the cooling fan 2, and further passes through the periphery of the engine main body 60 to the inside of the body or below the body. The state of being discharged to the side and the direction of the blades are changed by changing the angle of the blades, and the air around the engine main body 60 passes through the radiator 61 from the outside air introduction opening 63 with the dustproof net 63a to the outside. It is configured to be switched to a state of discharging to Details of the switching structure will be described later.

[Configuration of transmission system]
As shown in FIG. 12, the engine 6 is mounted on the body frame 1 in such a posture that the axial center direction of the output shaft 60 a is left and right. As shown in FIG. 12, the transmission from the engine 6 to the left and right crawler type traveling devices 10 is performed from the left end portion of the output shaft 60a of the engine 6 projecting toward the left and right central portion of the machine body. This is performed via a transmission system for traveling over the drive wheels 10A of the traveling device 10. The driving transmission system includes a belt-type transmission 12, a hydrostatic continuously variable transmission 14 provided as a main transmission, and a gear-type transmission (not shown) installed as an auxiliary transmission in a transmission case 15. , Etc.

  Each of the left and right crawler type traveling devices 10 switches between a stepless speed change operation and a forward / backward movement by the hydrostatic continuously variable transmission device 14 by swinging the speed change lever 11A equipped in the boarding operation unit 11 in the front / rear direction. In addition, the steering operation lever 11B provided in the boarding operation unit 11 is swung in the left-right direction, so that the gear-type transmission in the transmission case 15 moves straight, and the left and right turns slowly. It is configured to be able to switch between a state and a left and right sudden turning state.

  The reaping and conveying device 13 has a plurality of pulling devices 13A, clippers, and the like, by transmitting the power after shifting by the hydrostatic continuously variable transmission 14 via a one-way clutch 13a, a belt tension type reaping clutch 13b, and the like. 13B, the grain feeder 13C, etc. are driven, and with the traveling of the machine body, a plurality of weeding tools equipped at the front end of the planted rice grains are weeded, and each raising device 13A causes the planted culm after weeding, the cutting device 13B cuts the planted side of the planted culm, and the culm transporting device 13C lays the trimmed cereal from the standing posture and switches it to the posture. It is configured to convey toward the rear threshing device 4, and the lifting operation of the cutting and conveying device 13 is performed by the operation of the lift cylinder 18 by swinging the steering operation lever 11 </ b> B in the front-rear direction. It has become to so that.

  The threshing device 4 is the power of the engine 6 transmitted through the belt-tension type threshing clutch 40 and the handling cylinder 41 is driven. It is constituted by a known structure that handles and processes the head side and supplies the grain obtained by the sorting process to the grain tank 51 of the grain storage device 5 via the first recovery screw (not shown). ing.

  The feed chain 42 is configured such that power from the engine 6 is transmitted by a transmission system branched from the transmission system to the threshing device 4 by a transmission belt 43 and via a tension clutch type feed chain clutch 44. It is. Then, the feed chain clutch 44 is arbitrarily operated to drive the threshing device 4 at a different timing from the start or end of driving.

  The grain storage device 5 includes a grain tank 51 and a grain discharge auger 52, and is configured such that the power of the engine 6 is transmitted to the grain discharge auger 52. That is, the transmission belt 54 is stretched over the input portion 53 of the grain storage device 5 from the portion of the output shaft 60a of the engine 6 that protrudes from the right lateral side toward the outer side of the machine body. A belt tension type grain discharging clutch 50 for turning on and off the power transmission is provided. The cooling fan 2 is mounted on a portion of the engine 6 that protrudes from the right end portion of the output shaft 60a toward the outside of the machine body.

The Glen tank 51 has a working position in which the whole is located behind the engine 6 around the longitudinal axis y provided in the rear part thereof, and a front part of the Glen tank 51 protrudes outward to the right of the fuselage frame 1 so that the rear side of the engine 6 It is configured to be able to swing and displace over a maintenance position that opens the position, and to be able to hold the position at the work position and the maintenance position by a lock mechanism (not shown).
The screw conveyor 55 and the input portion 53 for the grain discharge auger 52 provided at the bottom of the Glen tank 51 that swings and displaces in this way allow the Glen tank 51 to swing around the longitudinal axis y. It has a disengagement structure.

That is, as shown in FIG. 12, the input pulley 56 on which the transmission belt 54 is stretched, and the transmission shaft 57 that is spline-fitted to the input pulley 56 so as to be integrally rotatable and relatively slidable are provided in the machine body. It is supported by a bearing bracket 10b provided on the frame 1 side.
The power transmitted to the transmission shaft 57 is transmitted to an input transmission shaft 58 that is engaged and disengaged with respect to the transmission shaft 57, and the bevel gear 58 a of the input transmission shaft 58 and the screw conveyor 55 It is configured to be transmitted to the screw conveyor 55 and the grain discharging auger 52 via a bevel gear 55a provided on the shaft end side.
The input transmission shaft 58 is supported on the Glen tank 51 side, and includes a recessed engagement portion 58b that can be inserted into and removed from the transmission shaft 57, while the rotational power from the transmission shaft 57 is transmitted. Since it can be inserted and removed in the axial direction, engagement and disengagement associated with the swing of the Glen tank 51 around the longitudinal axis y can be allowed.
Reference numeral 59 in the drawing denotes a pressing spring for pressing and urging the transmission shaft 57 toward the input transmission shaft 58.

[Configuration of cooling fan]
The cooling fan 2 capable of switching the blowing direction between the forward direction and the reverse direction is configured as follows.
As shown in FIGS. 4 to 8, the engine main body 60 is disposed in the left-right direction inside the bonnet 62, and a water pump 64 and an alternator 65 for the radiator 61 are disposed at the upper part of the radiator 61 side of the engine main body 60. The output shaft 60a is provided in the lower part of the portion of the engine body 60 on the radiator 61 side, and the output pulley 60b is fixed to the output shaft 60a. A flange portion 64c is fixed to the input shaft 64a of the water pump 64, and an input pulley 64b is fixed to the flange portion 64c with a bolt.

  As shown in FIGS. 4 and 5, an input pulley 65 b is fixed to the input shaft 65 a of the alternator 65, and the transmission belt 66 extends across the output pulley 60 b of the engine 6, the input pulley 64 b of the water pump 64, and the input pulley 65 b of the alternator 65. Is wound. As a result, the power of the output shaft 60a of the engine 6 causes the input shaft 64a of the water pump 64 and the input shaft 65a of the alternator 65 to be rotationally driven in a constant rotational direction A1.

As shown in FIGS. 8 and 9, the cylindrical rotation base 64d is fixed to the flange 64c together with the input pulley 64b by a bolt, and the rotation cam body 67 is fixed to the rotation base 64d by a bolt. A plurality of guide pins 67 b are fixed to the rotating cam body 67, and the guide pins 67 b are slidably inserted into the plurality of boss portions 21 a of the disk-shaped rotating body 21.
A seal member 22 is attached to the cam portion 67a and the guide pin 67b of the rotating cam body 67 so that the grease is prevented from leaking to the boss portion 21a of the rotating body 21, and the seal member 22 is fixed. A ring-shaped fixing plate 23 is provided. Thereby, together with the input shaft 64a of the water pump 64, the rotating base 64d, the rotating cam body 67, the rotating body 21, and the wind-up blade 20 described later are rotationally driven in the rotational direction A1 (corresponding to a constant rotational direction). .

  As shown in FIGS. 8 and 9, the receiving member 67d is fixed to the support shaft 67c fixed to the rotating cam body 67 with a bolt, and the spring 24 is attached between the rotating body 21 and the receiving member 67d. The rotating body 21 is urged by the spring 24 so as to slide to the left in FIG. 8 along the guide pin 67b.

As shown in FIGS. 8 to 10, a plurality of boss portions 21 b are provided on the outer peripheral portion of the rotating body 21, and each boss portion 21 b supports a shaft support member 25 positioned at the root portion of the wind-up blade 20, The shaft support member 25 is supported so as to be rotatable (angle changeable) around the support shaft core P <b> 1 along the radial direction of the rotating body 21.
The shaft support member 25 includes a shaft portion 25a that is rotatably supported relative to the boss portion 21b inside the rotating body 21, and a distal end side of the shaft portion 25a (the rotation center side of the rotating body 21). ) And an arm portion 25b that swings around the support axis P1 and a cam follower portion 25c that engages with the cam portion 67a of the rotating cam body 67 on the distal end side of the arm portion. .

  As shown in FIGS. 8 and 9, the rotating body 21 is illustrated in a state in which the cam follower portion 25 c of the shaft support member 25 is engaged with the cam portion 67 a of the rotating cam body 67 (the engagement position does not move). 8 and 9, when the sliding operation is performed in the axial direction of the rotating body 21, the shaft supporting member 25 is moved by the relative position change between the shaft supporting member 25 and the cam portion 67a of the rotating cam body 67. Rotating around the support axis P1, the angle of the wind blade 20 relative to the rotating body 21 is changed around the support axis P1. The rotary cam body 67 and the shaft support member 25 constitute a blade operating body that changes the angle of the wind-up blade 20.

  The wind-up blade 20 is integrally formed of glass fiber-containing polypropylene and is configured to have sufficient strength.

The angle changing mechanism 3 that changes the air blowing direction by changing the angle of the wind-up blade 20 is configured as follows.
As shown in FIGS. 4 and 8 to 10, the angle changing mechanism 3 supports the shaft support member 25 provided at the base portion of the wind-up blade 20 and the shaft support member 25 to support the shaft. The rotating body 21 that swings around P1, the ring-shaped operating member 30 that pushes and pulls in the axial direction of the rotating body 21 while supporting the rotating body 21 through a bearing 26 so as to be relatively rotatable, and An operation fork 31 (an example of a shift operation member) is configured to move the operation member 30 in the axial direction of the rotating body 21.
The operating fork 31 is configured to receive the power of the driving means 32 that transmits the driving force in the swing operation direction to the operating fork 31.

  That is, the operating fork 31 is pivotally supported around the swing axis P2 by being supported by a mounting bracket 45 provided on the upper portion of the radiator 61 side of the engine body 60. In association with the swing operation, the ring-shaped operation member 30 is pushed and pulled in the axial direction of the rotating body 21, and the rotating body 21 that is pushed and pulled in the same direction in conjunction with this operation is the shaft support portion of the wind-up blade 20. The material 25 is swung around the support axis P1.

As shown in FIGS. 5 and 8 to 10, the wire 35 connected to the free end portion of the operation fork 31 is an electric motor with a speed reduction mechanism provided on the rear side of the engine 6 as the driving means 32. The fan-shaped gear 34 driven by the motor 33 is connected.
Accordingly, when the wire 35 is pulled by the electric motor 33, the operation fork 31 is operated to the right of the drawing surface of FIG. 8 around the swing axis P 2, and the rotating body 21 is operated via the operation fork 31 and the operation member 30. However, the slide operation is performed against the urging force of the spring 24 to the right in FIG. When the wire 35 is returned by the electric motor 33, the rotating body 21 is slid to the left in FIG. 8 by the urging force of the spring 24.

  The state shown in FIGS. 8 and 11A is a state in which the wire 35 is returned by the electric motor 33 and the rotating body 21 is slid to the left in FIG. 8 by the urging force of the spring 24. In this state, the angle of the wind-up blade 20 relative to the rotating body 21 is changed from the neutral position N1 to the positive angle C1 around the support axis P1.

In the state shown in FIG. 8 and FIG. 11A, when the rotating body 21 and the wind-up blade 20 are rotationally driven in the rotation direction A1, wind is generated in the positive direction D1 by the wind-up blade 20, and the wind is It is supplied to the radiator 61 through the inside of the dust net 63 a and the hood 62.
In this case, as shown in FIG. 8, the outer diameter of the outer peripheral portion of the boss portion 21b of the rotating body 21 and the outer diameter of the input pulley 64b of the water pump 64 are set to be substantially the same. . Thus, the radial length of the boss portion 21b of the rotating body 21 is ensured while preventing the input pulley 64b of the water pump 64 from interfering with the wind generated in the positive direction D1 by the wind-up blades 20. Thus, the strength of the boss portion 21b of the rotating body 21 and the support strength of the wind blowing blade 20 are increased.

The operation time of the electric motor 33 is counted based on a clock signal of the control device 100 described later, and the operation time is controlled every predetermined time.
That is, when the state shown in FIG. 8 and FIG. 11A is maintained for a predetermined time (for example, about 3 minutes), as shown in FIG. 9 and FIG. When the wire 35 is pulled, the operating fork 31 swings around the swing axis P <b> 2, and the upper end side thereof is operated leftward in the drawing of FIG. 9, via the lower end side of the operating fork 31 and the operation member 30. The rotating body 21 is slid to the right of the sheet of FIG. 9 against the urging force of the spring 24. As a result, the angle of the wind blowing blade 20 with respect to the rotating body 21 is changed from the neutral position N1 to the angle C2 in the reverse direction around the support axis P1. In this case, as shown in FIG. 11 (b), the boss portion 21a of the rotating body 21 is greatly separated from the rotating cam body 67, and as shown in FIGS. 11 (a) and 11 (b), the angle C1 in the positive direction is set. The absolute value and the absolute value of the angle C2 in the opposite direction are substantially the same.

  In the state shown in FIG. 9 and FIG. 11B, when the rotating body 21 and the wind-up blade 20 are rotationally driven in the rotation direction A1, wind is generated in the reverse direction D2 by the wind-up blade 20, and the wind is The dust or the like that is supplied to the radiator 61 from the reverse direction and adheres to the radiator 61 is blown off to the right of the paper surface of FIG. Thereafter, when a short predetermined time (for example, about 10 seconds) elapses, the state shown in FIGS. 7 and 11B is automatically returned to the state shown in FIGS. 8 and 11A. In this case, in the state shown in FIGS. 9 and 11 (b), when the rotating body 21 is slid to the right of the paper surface in FIG. 11 (b) against the biasing force of the spring 24, the rotating body 21 and the wind generator Since the blades 20 approach the radiator 61, dust or the like adhering to the radiator 61 is better blown to the right side of the sheet of FIG.

[Configuration of lifting tool]
The lifting tool of the engine 6 includes a mounting bracket 45 of the angle changing mechanism 3 on the side where the cooling fan 2 of the engine body 60 is provided, and a lifting bracket 36 on the side where the muffler 68 of the engine body 60 is provided. It consists of a combination.

The mounting bracket 45 supports the operation fork 31 of the angle changing mechanism 3 in a swingable manner and fixes the outer wire 35a of the linking wire 35, and the cooling fan 2 of the engine main body 60. Is fixed to the side provided with.
The mounting bracket 45 is overlapped with a vertically long base material 46 formed in a cross-sectional channel shape, a horizontally oriented plate material 47 welded and connected to the channel-shaped opening side on the lower side of the vertically elongated base material 46, and the horizontally oriented plate material 47. It is configured by a combination of a T-shaped arm member 48 connected by bolts and an L-shaped wire stopper piece 49 welded to the lateral side at the upper end side of the vertically long base member 46.

Two mounting holes 46a and 46a are formed in the channel-shaped bottom plate portion of the vertically long base member 46, and the vertically long base member 46 is fixed to the engine body 60 via mounting bolts 46b inserted through the mounting holes 46a and 46a. I have to do it. The lateral plate member 47 and the arm member 48 are detachably connected via connecting bolts 47a provided on both lateral sides.
A holding cylinder 48b portion for holding the pivot shaft 48a of the operation fork 31 is formed at the projecting end of the arm member 48, and the operation fork 31 is moved around the pivot shaft 48a inserted through the holding cylinder 48b. It is configured to be swingable.

The cylinder axis of the holding cylinder 48b is a vertical line y1 passing through the input shaft 64a as viewed in the axial direction of the input shaft 64a of the water pump 64 serving as the rotation axis of the cooling fan 2 or the rotating body 21. And a swing axis P2 that is inclined with respect to any horizontal line x1 that intersects the vertical line y1.
Therefore, the operation fork 31 that swings around the pivot shaft 48a inserted in the holding cylinder 48b having the inclined swing axis P2 has the upper end side deviated from the vertical line y1 in the lateral direction. It is configured to swing in a direction along the axis of the shaft 64a.

The vertically long base member 46 is formed with a through hole 46c as a locking portion used when the engine 6 is lifted near the upper end thereof, and the through hole 46c and mounting holes 46a, 46b to the engine body 60, Are arranged linearly along a vertical line y1 passing through the input shaft 64a of the water pump 64.
Therefore, the operation forks 31 that are swung around the tilted swing axis P2 are located at positions shifted from each other in the rotation direction of the cooling fan 2 with respect to the vertically long base member 46, and the swing of the operation forks 31. The moving operation is not hindered by the presence of the vertically long base member 46.

The lifting bracket 36 on the side of the engine body 60 where the muffler 68 is provided is configured as follows. That is, as shown in FIGS. 6 and 7, the muffler 68 is mounted via the muffler mounting base 37 at the position above the end of the engine body 60 opposite to the side on which the mounting bracket 45 is provided. .
The muffler mounting base 37 is formed in a horizontally long box shape along the axial direction of the muffler main body 68a, and a plurality (three in this embodiment) are provided on the surface of the muffler mounting base 37 facing the engine main body 60. The mounting holes 37a and 37a are formed, and the mounting bolts 37b are inserted into the mounting holes 37a and 37a to fix the muffler mounting base 37 to the engine body 60.

On the muffler mounting base 37, a vertically long plate-like lifting bracket 36 is attached.
The lifting bracket 36 uses the mounting bolts 37b inserted into the two mounting holes 37a and 37a arranged in the vertical direction among the mounting holes 37a and 37a of the muffler mounting base 37, and It is configured so that it can be fixed to the engine body 60 together with the mounting.
And the through-hole 37c used as the latching | locking part for lifting similarly to the through-hole 46c of the said attachment metal fitting 45 is formed in the upper end side.

  As described above, the mounting bracket 45 which is the mounting means of the angle changing mechanism 3 is used, and a portion formed in the engine main body 60 as a mounting location of the muffler mounting base 37 or for mounting the muffler mounting base 37 Since the lifting tool is constructed by using the lifting bracket 36 that can use the mounting holes 37a and the mounting bolts 37b used for the lifting tool, the lifting tool is made as compact and simple as possible, and its assembly and disassembly Can also be provided as an easy one.

[Configuration of clutch operating device]
As shown in FIGS. 13 to 18, the present invention employs a cam-driven clutch operating device A as a combine clutch operating device for turning on and off the clutches included in the above various working devices. The clutch operating device A includes a driving device 7 that generates a driving force and a cam mechanism 8 that is driven by the driving device 7.

The driving device 7 is driven by an electric motor 70 different from the electric motor 33 for switching the blowing direction, a gear mechanism 72 for transmitting the power of the electric motor 70 to the cam mechanism 8, and the electric motor 70 as a power source. And a potentiometer 73 as a detection mechanism for detecting the operating state of the cam mechanism 8 and, as means for controlling the operation of the electric motor 70, a motor control provided as a control program in the control device 100 comprising a microcomputer, which will be described later. It is composed of a circuit.
When the operation signals of the various operation buttons B1 to B5 provided on the control panel 11C are input to the control device 100, the electric motor 70 outputs a control command based on the operation signals from the control device 100, and the electric motor 70 70 is driven in the forward direction or the reverse direction. The driving force of the electric motor 70 is output as the rotational power of the output gear 74 attached to the motor output shaft 71. The gear mechanism 72 is configured by the output gear 74 and a gear portion 75 formed on a part of the outer periphery of the cam plate of the cam mechanism 8 described later.
The driving state of the cam mechanism 8 by the output gear 74 is detected by a potentiometer 73 provided at the shaft end of the cam shaft 80, and a feedback signal based on the detection result is transmitted to the control device 100.

The cam mechanism 8 is a cam plate group composed of a combination of a first cam plate 81, a second cam plate 82, and a third cam plate 83 mounted so as to rotate integrally with a common cam shaft 80. And a cam follower group in contact with each of the cam plates 81, 82, 83.
Among the cam follower group, the first cam plate 81 includes a Glen tank cam follower 84 that operates the grain discharging clutch 50 that is guided in contact with the camshaft 80 on the front side of the machine body, and a camshaft 80. There is also provided a threshing cam follower 85 for operating the threshing clutch 40 that is guided by contact on the rear side of the machine body.
The second cam plate 82 is in contact with the feed system cam follower 86 for operating the feed chain clutch 44 that is guided by contact with the camshaft 80 on the front side of the fuselage, and on the rear side of the fuselage with respect to the camshaft 80. A cutting system cam follower 87 for operating the guided cutting clutch 13b is provided.
For the third cam plate 83, there is no cam follower on the front side of the body relative to the camshaft 80, and the shift operating means of the cutting transmission mechanism 16 that is guided by contact on the rear side of the body relative to the camshaft 80 is operated. A mowing transmission system cam follower 88 is provided. A gear portion 75 that constitutes the gear mechanism 72 together with the output gear 74 of the electric motor 70 is formed on a part of the outer peripheral edge of the third cam plate 83.

  The cam followers 84 and 86 existing on the front side of the machine body from the camshaft 80 are respectively arranged in the longitudinal direction of the swinging pieces 84a and 86a bent in a U-shaped section with respect to the clutch case 76. A pivot shaft 77 is mounted so as to be able to be inserted and removed from the right lateral outer side. Further, rollers 84b and 86b are provided on the upper end sides in the longitudinal direction of the swinging pieces 84a and 86a so as to come into contact with the outer peripheral edges of the cam plates 81 and 82 while entering the bent U-shaped portion. Operation wires 50a and 44a for turning on and off the grain discharging clutch 50 and the feed chain clutch 44 are connected to the lower ends in the longitudinal direction of the swing pieces 84a and 86a, respectively. is there.

  The cam followers 85, 87, 88 existing on the rear side of the machine body with respect to the camshaft 80 have lower end portions in the longitudinal direction of the swinging pieces 85 a, 87 a, 88 a formed to be bent in a U-shaped section, respectively. On the other hand, a pivot shaft 78 is mounted so as to be able to be inserted and removed from the right lateral outer side of the machine body. A roller 85b that contacts the outer peripheral side of the cam plates 81, 82, and 83 in the bent U-shaped portion at the intermediate portion in the longitudinal direction of the swinging pieces 85a, 87a, and 88a. , 87b, 88b are provided, and the threshing clutch 40 and the mowing clutch 13b are turned on and off at the upper ends in the longitudinal direction of the swinging pieces 85a, 87a, 88a, respectively. Operation wires 40a, 30a, 20a for operating the means are connected.

The first cam plate 81 has, on its outer periphery, a glen tank system cam surface 81a for operating the glen tank system cam follower 84 and a threshing system cam surface 81b for operating the threshing system cam follower 85. It is formed at a location substantially opposed across the shaft 80.
The second cam plate 82 has a feed system cam surface 82a for operating the feed system cam follower 86 and a cutting system cam surface 82b for operating the cutting system cam follower 87 on the outer peripheral edge thereof. It is formed in the place which opposes on both sides.
The third cam plate 83 is provided with a cutting transmission system cam surface 83a for operating the cutting transmission system cam follower 88 at the outer peripheral edge thereof, and the third cam plate 83 and the first cam plate 81 are provided. A gear portion 75 for transmitting a driving force to the second cam plate 82 is formed.

[Operation by clutch operating device]
Next, the operation mode by the clutch operating device A will be described with reference to FIGS.
FIG. 16 shows the cam surfaces 81a, 81b, 82a of the cam plates 81, 82, 83 within the rotation angle range of the cam shaft 80 set by the attachment range of the gear portion 75 formed on the third cam plate 83. , 82b, 83a and the cam followers 84, 85, 86, 87, 88, the range in which the function appears is represented by an angle distribution diagram within the rotation angle range.
FIG. 17 is a time chart with the vertical axis representing the type of work device and the horizontal axis representing operation timing. FIG. 18 is a graph illustrating the associated operation state between each cam plate and the cam follower, with the horizontal axis indicating the type of work device and the vertical axis indicating the time axis.

  The position of the symbol N shown in FIG. 16 indicates a neutral position in which all the clutches and the like operated by the clutch operating device A are not operated to the operating side and no work device is driven. Yes. A similar neutral position N is indicated by the same reference numeral N in FIGS.

In FIG. 16, reference numeral a indicates that the first cam plate 81 is rotated counterclockwise from the neutral position N, and the grain tank system cam surface 81 a operates the grain tank system cam follower 84 to operate the grain discharge clutch 50. This indicates the position where the is inserted, and corresponds to the position indicated by the same symbol a in FIG. In FIG. 18, the first cam plate 81 and the Glen tank system cam follower 84 are shown in contact with each other at the level “a” shown at the top.
At this time, the positions of the second cam plate 82 and the third cam plate 83 are not directly shown in FIG. 16, but in FIG. 17, lines indicating the operations of the threshing clutch 40 and the grain discharging clutch 50. Is related to the first cam plate 81, and the line indicating the operation of the cutting transmission mechanism 16 is related to the third cam plate 83.
Accordingly, also in FIG. 17, at the position a, only the grain discharge clutch 50 is “ON”, all the other clutches are “OFF”, and the cutting transmission mechanism 16 is in a low speed state. .
In FIG. 18, the second cam follower 86 is in contact with the feed system cam surface 82a of the second cam plate 82 at the stage indicated by symbol a. However, since the feed chain clutch 44 is originally biased to the entry side. The feed system cam surface 82a operates the second cam follower 86 to the cut side to keep the feed chain clutch 44 in the cut state.

In FIG. 16, the symbol b indicates that the first cam plate 81 is rotated clockwise from the neutral position N, and the grain tank system cam surface 81 a moves to a position away from the grain tank system cam follower 84 and the grain is discharged. The threshing system cam surface 81b operates the threshing system cam follower 85 and the threshing clutch 40 is engaged.
In FIG. 17 as well, the position indicated by the same symbol b corresponds to the same state. Moreover, in FIG. 18, it has shown by the contact state of the 1st cam board 81 and the threshing system cam follower 85 in the step of the code | symbol b illustrated in the 3rd step from the top.
At this time, as shown in FIGS. 17 and 18, the second cam plate 82 maintains both the feed chain clutch 44 and the cutting clutch 13b in the clutch-disengaged state.
Further, as shown in FIGS. 17 and 18, the third cam plate 83 maintains the low speed state of the cutting transmission mechanism 16.

16, the first cam plate 81 is rotated clockwise from the neutral position N, the threshing cam surface 81b operates the threshing cam follower 85, and the threshing clutch 40 is engaged. Continue to maintain.
At this time, in the second cam plate 82 that rotates clockwise, the feed cam surface 82a releases the cutting operation state of the feed cam follower 86, and switches the feed chain clutch 44 to the clutch engaged state.
At this time, the cutting cam surface 82b of the second cam plate 82 has not reached the state in which the cutting cam follower 87 acts, and the cutting cam follower 87 maintains the cut state of the cutting clutch 13b.
Also in FIG. 17, the position indicated by the same symbol c is in the same state, that is, the threshing clutch 40 and the feed chain clutch 44 are engaged, and the cutting clutch 13 b is disengaged.
FIG. 18 shows a state in which the threshing clutch 40 is kept in contact with the first cam plate 81 and the threshing cam follower 85 at the stage indicated by the symbol c. Along with this, the feed cam surface 82a of the second cam plate 82 releases the cutting operation of the feed cam follower 86, and the feed chain clutch 44 is switched to the clutch engaged state. Then, the cutting cam surface 82b of the second cam plate 82 has not reached the state in which the cutting cam follower 87 acts, and the cutting cam follower 87 maintains the cut state of the cutting clutch 13b.
Further, as shown in FIGS. 17 and 18, the third cam plate 83 maintains the low speed state of the cutting transmission mechanism 16.

16, the first cam plate 81 is rotated clockwise from the neutral position N, and the threshing cam surface 81b operates the threshing cam follower 85 so that the threshing clutch 40 is engaged. Continue to maintain.
The feed cam surface 82a of the second cam plate 82 that rotates clockwise is in a state in which the cutting operation of the feed cam follower 86 is released, and the state in which the feed chain clutch 44 is switched to engage with the clutch is maintained.
At this time, the cutting system cam surface 82b of the second cam plate 82 operates the cutting system cam follower 87, and switches the cutting clutch 13b to the clutch-engaged state.
Also in FIG. 17, the position indicated by the same symbol d is in the same state, that is, the state where both the threshing clutch 40 and the feed chain clutch 44 and the mowing clutch 13 b are switched to the clutch-engaged state. .
FIG. 18 shows a state in which the threshing clutch 40 is kept in contact with the first cam plate 81 and the threshing cam follower 85 at the stage indicated by the symbol d. At the same time, the cutting cam surface 82b of the second cam plate 82 operates the cutting cam follower 87. At the same time, the feed cam surface 82a releases the cutting operation of the feed cam follower 86, and the feed chain clutch 44 and the cutting clutch 13b. Are shown in a state where both are switched to the clutch engaged state.
Further, as shown in FIGS. 17 and 18, the third cam plate 83 maintains the low speed state of the cutting transmission mechanism 16.

16, the first cam plate 81 is rotated clockwise from the neutral position N, and the threshing system cam surface 81b operates the threshing system cam follower 85 so that the threshing clutch 40 is engaged. Continue to maintain.
The cutting cam surface 82b of the second cam plate 82 that continues to rotate clockwise operates the cutting cam follower 87. At the same time, the feed cam surface 82a cancels the cutting operation of the feed cam follower 86, and the feed chain. Both the clutch 44 and the mowing clutch 13b are maintained in a state where they are switched to the clutch-engaged state.
At this time, the cutting transmission system cam surface 83a of the third cam plate 83 operates the cutting transmission system cam follower 88 to operate the operation shifter of the cutting transmission mechanism 16 to the high speed side.
In FIG. 17, the position indicated by the same symbol e is the same, that is, the feed chain clutch 44 and the cutting clutch 13b are both engaged, and the cutting transmission mechanism 16 is operated to the high speed side. Show.
FIG. 18 shows a state in which the threshing clutch 40 is kept in contact with the first cam plate 81 and the threshing cam follower 85 at the stage indicated by the symbol e. At the same time, the cutting cam surface 82b of the second cam plate 82 operates the cutting cam follower 87. At the same time, the feed cam surface 82a releases the cutting operation of the feed cam follower 86, and the feed chain clutch 44 and the cutting clutch 13b. , Both of which are switched to the clutch engaged state, the cutting high speed system cam surface (not shown) of the third cam plate 83 operates the cutting transmission system cam follower (not shown), The operating shifter of the cutting and shifting mechanism 16 is operated to the high speed side.

[Control system configuration]
As shown in FIG. 20, the operation of the electric motor 70 that is the power source of the cam mechanism 8 that operates the reaping clutch 13b, the threshing clutch 40, the feed chain clutch 44, the grain discharging clutch 50, and the reaping transmission mechanism 16 is controlled. The control device 100 including the control circuit 71 is configured as follows.

Each of the pillow handling threshing start button B1, the cutting threshing start button B2, the high speed cutting threshing button B3, the grain discharge button B4, and the work end button B5 provided on the operation panel 11C of the boarding operation unit 11 is configured by an operation switch. The operation signal is input to the control device 100.
In the control device 100, based on the determination of which of the buttons B1, B2, B3, B4, and B5 is operated, and on the basis of the detection result of the potentiometer 73, the control circuit controls the electric motor of the clutch operating device A. A control command is output to 70 as follows.

When it is detected that the pillow handling threshing start button B1 has been operated, the detection position of the camshaft 80 detected by the potentiometer 73 is a position indicated by reference sign c in FIG. 16 (referred to as a pillow handling threshing start position c). If the position is not further away from the neutral position than clockwise, the electric motor 70 drives the gear mechanism 72 to rotate the cam shaft 80 of the cam mechanism 8 clockwise. When the potentiometer 73 detects that the pillow handling threshing start position c has been reached, a stop command is output to the electric motor 70.
When the detection position of the camshaft 80 detected by the potentiometer 73 is a position that is further away from the neutral position in the clockwise direction than the pillow handling threshing start position c, the electric motor 70 rotates in the reverse direction and the gear mechanism 72 is rotated. Driven to rotate the cam shaft 80 of the cam mechanism 8 counterclockwise. When the potentiometer 73 detects that the pillow handling threshing start position c has been reached, a stop command is output to the electric motor 70. In addition, when the detection position of the camshaft 80 detected by the potentiometer 73 is the pillow handling threshing start position c, a drive command for the electric motor 70 is not output.
In this state, the threshing cam surface 81b of the first cam plate 81 operates the threshing cam follower 85, and the threshing clutch 40 is engaged and operated. Thereafter, when it is detected that the work end button B5 is operated, the electric motor 70 is driven to rotate the camshaft 80 counterclockwise. When it is detected that the neutral position N has been reached, the operation stops. To do.

When it is detected that the mowing and threshing start button B2 has been operated, the detection position of the camshaft 80 detected by the potentiometer 73 is more than the position of the symbol d in FIG. 16 (referred to as the mowing and threshing start position d for convenience). When the position is not clockwise and away from the neutral position, the electric motor 70 drives the gear mechanism 72 to rotate the cam shaft 80 of the cam mechanism 8 clockwise. When the potentiometer 73 detects that the cutting and threshing start position d has been reached, a stop command is output to the electric motor 70.
When the detection position of the camshaft 80 detected by the potentiometer 73 is a cutting and threshing start position d or a position that is further away from the neutral position in a clockwise direction than the cutting and threshing start position d, the driving with respect to the electric motor 70 is performed. No command is output.
In this state, the threshing system cam surface 81b of the first cam plate 81 operates the threshing system cam follower 85 so that the threshing clutch 40 is engaged and operated, and the reaping system cam of the second cam plate 82 is maintained. The surface 82b operates the cutting system cam follower 87, and at the same time, the feed system cam surface 82a cancels the cutting operation of the feed system cam follower 86, and the feed chain clutch 44 and the cutting clutch 13b are both switched to the clutched state. ing.
Thereafter, when it is detected that the work end button B5 is operated, the electric motor 70 is driven to rotate the camshaft 80 counterclockwise, and when it is detected that the neutral position N has been reached, the operation stops. To do.

When it is detected that the high-speed mowing and threshing discharge start button B3 has been operated, the detection position of the camshaft 80 detected by the potentiometer 73 is the position of the symbol e in FIG. 16 (referred to as a high-speed mowing and threshing position e for convenience). If the position is not further away from the neutral position than clockwise, the electric motor 70 drives the gear mechanism 72 to rotate the cam shaft 80 of the cam mechanism 8 clockwise. When the potentiometer 73 detects that the high-speed mowing and threshing position e has been reached, a stop command is output to the electric motor 70.
In this state, the threshing system cam surface 81b of the first cam plate 81 operates the threshing system cam follower 85 so that the threshing clutch 40 is engaged and operated, and the reaping system cam of the second cam plate 82 is maintained. The surface 82b operates the cutting system cam follower 87, and at the same time, the feed system cam surface 82a cancels the cutting operation of the feed system cam follower 86, and the feed chain clutch 44 and the cutting clutch 13b are both switched to the clutched state. ing.
Further, the cutting high speed cam surface 83a of the third cam plate 83 operates the cutting gear shift cam follower 88 in accordance with the operation to the high speed cutting threshing position e, so that the operation shifter of the cutting shift mechanism 16 is moved to the high speed side. It is operating.
Thereafter, when it is detected that the work end button B5 is operated, the electric motor 70 is driven to rotate the camshaft 80 counterclockwise, and when it is detected that the neutral position N has been reached, the operation stops. To do.

When it is detected that the grain discharge start button B4 has been operated, the detection position of the camshaft 80 detected by the potentiometer 73 is from the position a in FIG. 16 (referred to as the grain discharge position a for convenience). If the position is not counterclockwise and away from the neutral position, the electric motor 70 drives the gear mechanism 72 and rotates the cam shaft 80 of the cam mechanism 8 counterclockwise. When the potentiometer 73 detects that the grain discharge position a has been reached, a stop command is output to the electric motor 70.
When the detection position of the cam shaft 80 detected by the potentiometer 73 is the grain discharge position a, the drive command for the electric motor 70 is not output. In this state, the grain tank system cam surface 81a of the first cam plate 81 operates the grain tank system cam follower 84, and the grain discharging clutch 50 is engaged.
Thereafter, when it is detected that the work end button B5 is operated, the electric motor 70 is driven to rotate the camshaft 80 clockwise, and when it is detected that the neutral position N has been reached, the operation stops. To command.

[Other Embodiment 1]
The timing at which the cooling fan 2 blows air in the reverse direction is not limited to control at a predetermined time by the control device, but may be manually operated by providing a push button switch that can be manually operated. It may be.

[Second embodiment]
The engine lifting tool in the present invention can be applied not only to a combine but also to various working machines such as agricultural tractors, riding lawn mowers, construction machines, riding rice transplanters.

Overall side view of self-removing combine Overall plan view of self-decomposing combine Plan view showing the fuselage frame Longitudinal rear view near the engine, radiator and cooling fan Right side view showing the engine Left side view showing the engine Front view showing the engine Sectional view showing cooling fan and angle changing mechanism Sectional view showing cooling fan and angle changing mechanism Right side view showing the positional relationship between the lifting tool and the angle change mechanism Explanatory drawing which shows the relationship between the angle change of a wind-up blade, and the change of a ventilation direction Schematic diagram showing the transmission system Plan view showing the clutch operating device Side view showing the clutch operating device Sectional view showing the clutch operating device Diagram showing the operation mode of the clutch operating device Time chart showing the mode of operation of the clutch operating device Explanatory drawing which shows the operation form of a clutch operation device Block diagram showing control configuration

Explanation of symbols

Reference Signs List 2 Cooling fan 3 Angle change mechanism 6 Engine 20 Winding blade 21 Rotating body 25 Shaft support member 31 Shift operation member 45 Mounting bracket 46c Locking portion 60 Engine main body P2 Tilt axis y1 Vertical line x1 Horizontal line

Claims (3)

The cooling fan supported by the engine body is composed of a rotating body that is rotationally driven by engine power, and a plurality of blast blades supported by a shaft support member that includes a shaft portion along the radial direction of the rotating body. ,
An angle changing mechanism for changing the angle of the wind-up blade with respect to the rotating body around the axis of the shaft support member, and a mounting bracket for mounting the angle changing mechanism on the engine body,
An engine lifting tool provided with a mounting portion for lifting the engine on the mounting bracket.   The operating portion of the angle changing mechanism and the engaging portion for lifting the engine are both provided above the rotating body as viewed in the direction of the rotational axis of the rotating body, and are displaced from each other in the rotating direction of the rotating body The engine lifting tool according to claim 1 provided in   The angle changing mechanism is configured to change the angle of the wind vane by moving the blade operating body provided on the outer peripheral portion of the rotating body in the axial direction of the rotating body, and the blade operating body is moved in the axial direction. The shift operating member that moves is configured to swing around an inclined swing axis that intersects the vertical line and the horizontal line as viewed in the axial direction of the rotating body, and is formed on the mounting bracket. The locking part for lifting the engine is positioned on or near the vertical line passing through the rotation axis of the rotating body, and the upper end side of the shift operation member is moved in the axial direction of the rotating body at a position away from the mounting bracket. The lifting tool for an engine according to claim 2, which is configured to be freely operated.

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