JP2011041535A - Combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a combine harvester enabling the maintenance efficiency of an engine to be secured by making a steering section stably turnable from above the engine to the steering section's outside divergent position. <P>SOLUTION: The combine harvester includes: a grain culm-reaping apparatus; a threshing apparatus receiving grain culms reaped by the reaping apparatus and threshing them; a grain reservoir for reserving threshed grains therein; an engine 11 installed in between the front side of the grain reservoir and the reaping apparatus; and a cabin having a steering section 6 covering above the engine 11. In the combine harvester, the steering section 6 is movably supported transversely outside of the engine 11 by inside arm and an outside arm 17 each turnable sideways with being linked to the respective inside and outside positions; and one end of a support frame 20 is pivotally supported, with a longitudinal shaft, to an intermediate part of the outside arm 17, while the other end of the support frame 20 is pivotally supported, with a longitudinal shaft, to a sliding support 20a supported on the outer side of the machine body in a back-and-forth slidable manner. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a combine in which a control unit is configured at a position covering an engine.

  As shown in Patent Document 1, a conventional combine is provided with a threshing device and a grain storage device arranged side by side on the upper side of an airframe frame provided with a traveling device, and a cutting device is provided on the front side of the airframe frame. The engine is installed in a part on the fuselage frame between the device and the grain storage device, and the control unit equipped with a seat is movable from the closed position covering the upper side of the engine to the open position on the outside, and the vertical axis on the fuselage frame. There is a configuration in which it can be rotated freely. With this configuration, the control unit is rotated about the vertical axis about one point and moved to the open position to facilitate maintenance of the engine unit.

JP 2007-28941 A

However, in the technique disclosed in Patent Document 1, as shown in FIG. 8, the control unit is configured to rotate around a vertical axis provided inside the aircraft body, so that the control unit is disposed outside. When moving to the direction, the rear part of the control part moves rearward and interferes with the grain storage device arranged close to the rear side. That is, the grain storage device is in the way, and the control unit cannot be moved outward unless the grain storage device is moved outward from the machine body.
And the grain storage device is rotatably supported on the vertical axis so that it can move to the outside of the machine body, but after discharging the stored grain from the support strength of this vertical axis part Otherwise, it cannot be moved outward.

Therefore, before moving the control unit to the open position, first, the work of discharging the grain in the grain storage device is performed, and after the discharging operation is completed, the grain storage device is moved outward of the machine body. Therefore, there is a drawback that the efficiency of maintenance of the engine part is lowered.

  In addition, when the front part of the control part is configured to be pivotally attached to the body frame in the vertical axis, the front part of the control part moves forward when the control part is moved outward, and the front side Will interfere with the reaping device placed close to. That is, the cutting device cannot be moved to the outside of the machine body unless it is in the way and the cutting device is moved to the outside of the machine body or removed from the machine frame. There is a drawback that the efficiency of maintenance is reduced.

  An object of the present invention is to obtain a combine that can ensure the efficiency of maintenance of the engine unit by stably rotating the control unit from above the engine unit to the outward deployment position.

The invention described in claim 1 includes a reaping device (4) for harvesting cereals at the front part of the machine body, a threshing device (3) for receiving and harvesting cereals behind the reaping device (4), and the threshing Engine part (11) arranged between the grain storage device (5) for storing the threshed grain on the side of the device (3) and the reaping device (4) on the front side of the grain storage device (5) And a combine provided with a cabin (12) provided with a control part (6) covering the upper part of the engine part (11),
The steering part (6) is connected laterally to the inner and outer positions of the steering part (6) in the lateral direction to the outer side of the engine part (11) by an inner arm (16) and an outer arm (17) that can be turned laterally. And one end of the support frame (20) is pivotally attached to the middle portion of the outer arm (17) along the vertical axis, and the other end of the support frame (20) is attached to the outer side of the body. The combine is characterized in that it is axially attached to the slide support portion (20a) supported so as to be slidable along the vertical axis.

  The steering unit (6) is supported by an inner arm (16) and an outer arm (17) that can be pivoted sideways so as to be laterally movable to the outer side of the engine unit (11), and on the outer side of the body. The outer arm (17) is stably supported by the support frame (20) that is axially attached to the slide support portion (20a) supported so as to be slidable back and forth.

According to the present invention, the steering part (6) covering the upper part of the engine part (11) is laterally extended to the outer side of the engine part (11) by the inner arm (16) and the outer arm (17) which can be turned laterally. The outer arm (17) is stably supported by the support frame (20) that is pivotally attached to the slide support portion (20a) supported slidably forward and backward on the outer side of the machine body. Therefore, it becomes possible to stably move the control unit (6) from the upper side of the engine unit (11) to the outward deployment position with a light operating force, and the maintenance of the engine unit (11) and its surroundings is easy. Can be done.

Top view of the combine Combine side view Side view of the control section and its surroundings Side view for explanation of the control section and its surroundings Front view for explaining the lower structure of the control section Plan view for explanation of the state where the control unit is in the closed position Plan view for explanation in a state where the control unit is in the open position Plan view for explanation of inner and outer arms A perspective view for explaining the state in which the control unit is in the open position Longitudinal sectional view (a), main part front view (b) and partial enlarged view (c) of the ventilation control mechanism Operational front view of the ventilation adjustment mechanism of FIG. Example (a) and position front view (b) of position adjustment elongated hole formed as a vertically elongated hole Example (a) and position front view (b) of position adjustment slotted hole formed as a concave hole Vertical sectional view (a) and rear view (b) of monitor fixing structure The same figure as FIG. 14 about another structural example Side view of a hopper type combine with corresponding top plan view Front view of hopper type combine with corresponding top plan view Front view of parking brake link Side view of parking brake link of FIG. Enlarged view of the main part of the brake link Rear view (a) of the main part of the rear shaft support and (b) of the restricted state Relational characteristic diagram of pedal depression amount and depression force Side view of the main part of the cutting part Side view (a) and front view (b) of rotating part

  As shown in FIGS. 1 and 2, the combine body of the present invention is provided with a left and right crawler type traveling device 2 on the lower side of the body frame 1 that is rectangularly framed in plan view, and on the upper side of the body frame 1. The threshing device 3 and the grain storage device 5 are mounted side by side, and the reaping device 4 is provided on the front side of the body frame 1 so as to be movable up and down, and on the body frame 1 between the reaping device 4 and the grain storage device 5. The engine 11 is mounted on the site, and the control unit 6 is provided on the upper side of the engine 11.

  As shown in FIG. 3, the control unit 6 includes a seat 7 on which an operator is seated, a step S disposed in the lower front portion of the seat 7, a front portion of the seat 7, and a steering operation with the meter panel M. A front operation panel F1 provided with a lever P, a side operation panel F2 provided on the left side of the seat 7 and provided with a speed change lever H, and an engine cover C covering the upper, outer and front surfaces of the engine 11 Assemble and configure. And these are enclosed by the outer wall which has a window, and the cabin 12 as one unit is formed.

  As shown in FIGS. 6, 7, and 9, the steering unit 6 is supported on the machine body frame 1 side by the link mechanism 15, and is positioned between the grain storage device 5 and the reaping device 4, and the engine 11. Between the closed position that covers the upper side of the control frame 6 and the open position in which part or all of the control section 6 protrudes outward from the outer end of the body frame 1.

The support structure of the control unit 6 by the link mechanism 15 will be described in detail below.
As shown in FIG. 7, the link mechanism 15 includes two arms, an inner arm 16 disposed on the inner side of the body and an outer arm 17 disposed on the outer side of the body from the inner arm 16.
The base of the inner arm 16 and the base of the outer arm 17 are an inner base mounting shaft (shaft to which the base of the inner arm is attached) 18 and an outer base on a fixed portion provided on the body frame 1 on the rear side of the engine 11. Attaching shafts 19 (shafts to which the bases of the outer arms are attached) 19 are attached so that the vertical axes can freely rotate.

  On the other hand, the tip of the inner arm 16 and the tip of the outer arm 17 are connected to the front part of the control unit 6, the shaft 21 for attaching the tip of the inner tip attachment shaft inner arm, and the tip of the outer tip attachment shaft outer arm. The shafts 22 are attached so that the vertical axis can be rotated. The support frame 20 is cantilevered on the outer side of the machine body so that the fulcrum can move. For example, an intermediate connecting portion 17a with a vertical axis is provided in the intermediate portion of the outer arm 17, and the support frame 20 is connected to the intermediate connecting portion 17a in the vertical direction so as to be laterally rotatable, and moved back and forth along the outer frame 1a. The slide support portion 20a is configured as possible, and the other end portion of the support frame 20 is connected to the slide support portion 20a in the vertical axis.

  With the above configuration, the control unit 6 uses the four points of the inner base mounting shaft 18, the inner tip mounting shaft 21, the outer base mounting shaft 19, and the outer tip mounting shaft 22 as rotation fulcrums, and further adds a support frame 20. The link mechanism 15 is stably supported. As a result, as compared with the configuration in which the control unit 6 is slid outward, the support of the control unit 6 is stabilized and the movement of the control unit 6 to the open position can be performed with a light operating force.

As shown in FIG. 6, the inner base mounting shaft 18 is disposed on the rear side of the central portion in the left-right direction of the control unit 6, and the outer base mounting shaft 19 is connected to the right end (the outer side end of the fuselage). ) It is arranged at the outer end of the body frame 1 that is closer to the position.
Further, as shown in FIG. 8, the base side portion of the inner arm 16 and the tip side portion of the outer arm 17 are each refracted into an L shape. That is, the inner arm 16 is formed from a base side portion 23 that assumes a lateral posture in a closed position of the control unit 6 and a distal end portion 24 that assumes a longitudinal posture. Further, the outer arm 17 is formed by a base side portion 25 that is in the front-rear direction posture at the closed position of the control unit 6 and a distal end side portion 26 that is in the left-right direction posture.

  As a result, when a virtual line L1 passing through the inner base mounting shaft 18 is drawn, the inner tip mounting shaft 21 is disposed on the left side (inside the machine body) from the virtual line L1. Similarly, when an imaginary line L2 passing through the outer base mounting shaft 19 is drawn, the outer tip mounting shaft 22 is disposed on the left side (inside the machine body) from the imaginary line L2.

  That is, a straight line connecting the inner base mounting shaft 18 and the inner tip mounting shaft 21 and a straight line connecting the outer base mounting shaft 19 and the outer tip mounting shaft 22 are predetermined on the left side (the inner side of the aircraft) with respect to the traveling direction of the aircraft. Are arranged at positions deviated by the angles θ1 and θ2.

  As a result, when the inner arm 16 and the outer arm 17 are rotated, the inner tip mounting shaft 21 and the outer tip mounting shaft 22 are respectively connected to the outer sides of the virtual lines L1 and L2 from the inner sides of the virtual lines L1 and L2. Therefore, the inner arm 16 and the outer arm 17 are rotated more outward than in the case where the inner arm 16 and the outer arm 17 are linearly arranged in parallel with the traveling direction of the machine body.

  Therefore, at the beginning of the start of the movement of the control unit 6 from the closed position to the open position, the amount of lateral movement of the control unit 6 is larger than that in the configuration in which the control unit 6 is rotated around one point. The amount of forward / backward movement becomes smaller. Thereby, the control part 6 does not interfere with the grain storage device 5 disposed on the rear side and the reaping device 4 disposed on the front side, and between the grain storage device 5 and the reaping device 4 outward. to go out.

  Accordingly, it is not necessary to move the grain storage device 5 on the rear side of the control unit 6 or the reaping device 4 on the front side before moving the control unit 6 to the open position. Without interfering with the device 5 and the reaping device 4, it can be moved to the open position outside the engine 11, and the upper side of the engine 11 and its periphery can be opened widely to perform maintenance efficiently. For this reason, even if trouble occurs during the cutting operation, the operation of moving the grain storage device 5 after discharging the kernel in the kernel storage device 5 and the operation of moving the cutting device 4 are not required. Maintenance can be performed by easily opening the control unit 6.

  In addition, as shown in FIG. 3, FIG. 7, and FIG. 9, an inner vertical rod 41A is provided in a part inside the machine body of the frame 40 surrounding the engine 11, and a bearing member 18A provided at a high portion of the inner vertical rod 41A is provided. The base of the inner arm 16 is attached to the inner base attachment shaft 18 so as to be rotatable in the vertical axis. Accordingly, the inner arm 16 is disposed at a position higher than the engine 11.

  Specifically, as shown in FIGS. 4 and 9, the distal end portion 24 of the inner arm 16 includes a rear rod 36 positioned above the air cleaner 30 and an intermediate vertical position positioned in front of the air cleaner 30 in a side view of the body. It is constituted by a rod 37 and a front rod 38 positioned above the engine 11. As a result, when the control unit 6 is moved outward, the inner arm 16 passes over the air cleaner 30 and the engine 11, so that a large amount of rotation of the inner arm 16 can be secured, and the amount of movement of the control unit 6 is increased. be able to.

Then, the front end of the inner arm 16 is connected to the bearing member 21A of the support frame 43 in the front-rear direction provided at the left end (the inner end of the fuselage) at the same height as the side operation panel F2. The mounting shaft 21 is mounted so that the vertical axis can freely rotate.
Further, the outer base mounting shaft 19 is supported by a bearing member G straddling the lower portion of the outer vertical shaft 41 and the outer surface of the body frame 1 provided in a part outside the body of the frame 40 so as to be rotatable in the vertical axis. The outer arm 17 is disposed below the control unit 6. Further, the outer tip mounting shaft 22 at the tip of the outer arm 17 is pivoted to the bearing member 22A at the middle portion in the left-right direction of the front reinforcing rod 35A in the left-right direction provided at the lower front portion of the control unit 6. Install freely.

With this configuration, the outer arm 17 supports the control unit 6 from the lower side, and the inner arm 16 supports a portion of the control unit 6 above the engine 11, so that the support strength by the link mechanism 15 is improved. It is possible to improve the support strength against the horizontal collapse of the portion 6.

  Further, as shown in FIGS. 5, 6, and 7, an intermediate reinforcing rod 35 that is directed in the left-right direction is attached to the intermediate portion in the front-rear direction of the lower portion of the control unit 6, and the distal end side portion 24 of the outer arm 17 is attached to A roller R that is rotatable about an axis along the longitudinal direction of the distal end side portion 24 is attached. Then, by placing the intermediate portion reinforcing rod 35 on the roller R, the control portion 6 is supported by the outer arm 17, and when the control portion 6 moves outward, the roller R rolls on the lower surface of the reinforcing rod 35. However, the structure is supported.

As a result, the control unit 6 is supported at three points: the inner tip mounting shaft 21, the outer tip mounting shaft 22, the intermediate portion reinforcing rod 35 and the contact portion of the roller R, and the support state of the control unit 6 is stabilized. .
As shown in FIGS. 3 and 4, an air cleaner 30, an electrical component storage box 32, a radiator 31, and an intercooler 34 for the turbo of the engine 11 are attached to the frame 40. Therefore, when the control unit 6 is moved outward, the engine 11, the air cleaner 30, the electrical component storage box 32, the radiator 31, and the intercooler 34 remain on the body frame 1 side. A portion of the engine cover C on the outer side of the radiator 31 and the intercooler 34 is formed of a hollow iron plate capable of sucking outside air.

  Further, as shown in FIG. 5, in the space K on the lower body frame 1 below the control unit 6, a fuel filter N1 for the engine 11 and a hydrostatic continuously variable transmission HS that drives the traveling mission MI. An oil filter N2 is provided. An auxiliary step ST is attached to the control unit 6 so as to be pivotable up and down about a longitudinal axis ST1, and the auxiliary step ST comes out of the body frame 1 from a non-use state in which the auxiliary step ST is stored in the space K. It is possible to switch to the use state.

With the above configuration, in the harvesting and threshing work by the combine, the control unit 6 is fixed at the closed position on the upper side of the engine 11, the engine 11 is started, and the traveling device 2 is driven forward, while the reaping device 4 harvests the culm. Then, the harvested corn straw is supplied to the threshing device 3 and threshed, and the threshed grain is stored in the grain storage device 5.
During such a mowing and threshing operation, if an abnormality occurs in the engine 11 or its peripheral devices, the traveling is stopped, and the operator pulls out the control unit 6 to the outside of the body to perform maintenance.

  At this time, the steering unit 6 supported by the link mechanism 15 once slightly moves forward with the start of movement from the closed position covering the upper side of the engine 11 shown in FIG. 6 to the outward open position shown in FIG. The amount of forward movement of the control unit 6 is such that it does not reach the back of the reaping device 4 disposed on the front side, and the control unit 6 interferes with the back of the reaping device 4. Without moving to the outside. Moreover, the rear part of the control part 6 moves outward without interfering with the front part of the grain storage device 5 arranged on the rear side. That is, at the beginning of the movement, the control unit 6 moves while drawing a locus close to parallel movement.

And the control part 6 which came out to the outer side from between the reaping device 4 and the grain storage device 5 in this way moves to the outer side largely toward the front side thereafter, and changes the direction as shown in FIG. It reaches the open position shown. In this open position, the part on the front side of the control unit 6 is far away from the outer end of the body frame 1, and the operator enters between the control unit 6 and the body frame 1 so that maintenance of the engine 11 and its surroundings is easy. It can be done.

In this open position, the rear portion of the control unit 6 is slightly protruded outward from the outer end of the body frame 1, but if the grain storage device 5 is moved, the control unit 6 is moved to the engine. 11 can be moved to the rear of the engine 11 to further open the outer side of the engine 11.

  Further, if the engine 11 can be started with the control unit 6 in the open position, the operating state of the engine 11 and its peripheral devices can be easily inspected, and maintenance efficiency is increased. In addition, a parking brake pedal (not shown) arranged on the upper side of step S is rotatably attached to the body frame 1 side and is configured to remain on the body side even when the control unit 6 is moved outward.

(Radiator)
Next, the radiator ventilation adjusting mechanism will be described.
The ventilation opening of the radiator 31 is provided with a ventilation adjustment mechanism including a resistance plate 53 and a shutter plate 54 between the radiator cover 51 and a longitudinal sectional view along the ventilation direction F as shown in FIG. As shown in FIG. 10 (b), the resistance plate 53 has a front view of the main part thereof, as shown in FIG. 10 (b), a number of holes A for adjusting the flow of the wind are formed, and a hole B having the same diameter or larger than the hole A is formed. The shutter plate 54 is opened and slidably attached to the inner side of the resistance plate 53, and the shutter plate 54 is horizontally long for adjusting the slide position, as shown in FIG. The position adjusting slot C is formed and fixed at a position suitable for the cooling performance by the knob bolt 55.

  As shown in FIG. 11, the air flow adjusting mechanisms 53 and 54 change the position of the shutter plate 54 within the range of the position adjusting slot C so that the hole positions of the resistance plate 53 and the shutter plate 54 are changed. Since the passage area of the cooling air is reduced and the passage of cooling air is reduced, the amount of air flow by the standard resistance plate 53 in the harvesting run exposed to the dust generated from the field scene and the harvested crop, especially when harvesting varieties with much dust. Since the intrusion of dust into the radiator fins is reduced by adjusting the value, it is possible to avoid engine overheating caused by a decrease in cooling performance due to dust accumulation.

  As for the position adjusting slot, as shown in the example (a) formed in the vertical slot D of FIG. 12 and its operation front view (b), the position where the shutter plate 54 is lowered is configured as the standard position, As shown in the example (a) formed in the concave hole E of FIG. 13 and the operation front view (b), the position where the shutter plate 54 is lowered is divided into the standard position and the most restrained position, The standard position and the like can be secured also by loosening of the knob bolt 55.

(Monitor fixing part)
Next, the monitor fixing structure will be described.
FIG. 15 shows a longitudinal sectional view (a) and a rear view (b) of the monitor fixing structure. Positioning pins 62 and 62 are projected from a mounting portion 61a formed on the back surface of the monitor 61, and a fixing bracket 63 provided with a cushioning material 63a is attached and sandwiched via the cushioning material 63a. Is fixed to the holding case 64, and the pins 62, 62 on the back side of the monitor are inserted into the holes 65b, 65b of the positioning metal fitting 65a provided on the back cover 65 of the holding case 64 and assembled.

  Due to the above-mentioned monitor fixing structure, the fixing member is not exposed to the surface of the holding case 64 (see Japanese Patent Application Laid-Open No. 2008-109943), and an insufficient fixing force by the cushioning material is applied without applying an excessive load on the monitor 61. In addition, the monitor 61 can be securely fixed.

  Further, as shown in FIG. 15, a diagram similar to FIG. 14 for another configuration example, cushioning materials 66, 66 such as rubber bushes are attached to the positioning fitting 65a, and pins 62, 62 on the back side of the monitor are inserted into the holes. By doing so, vibration during traveling can be effectively absorbed.

(Hopper)
Next, the rear hopper will be described.
FIG. 16 is a side view of a hopper type combine in which a main part plan view is described correspondingly. In a combine that has a whipping cylinder 72 in front of the center of the hopper 71 and receives and stores the straw that has been blown rearward from the outlet 72a at the upper part thereof, the inclination angle θ1 of the front and rear inclined surfaces reaching the hopper outlet 71a. , Θ2, θ1 <θ2, that is, the front side is configured to be gently inclined and the rear side is configured to be steeply inclined.

  By comprising as mentioned above, since the rice cake discharged | emitted from the exit 72a of the whipping cylinder 72 accumulates from the rear side, the amount of accumulation in the hopper 71 can also be increased by causing the rice cake accumulated on the rear side to flow downward quickly. It is uniform and can work efficiently.

  FIG. 17 is a front view of a hopper type combine in which a main part plan view is described correspondingly. In a combine that has a whipping cylinder 72 inward from the center of the hopper 71 and receives and stores the straw that has been blown outward from the outlet 72a at the upper end of the hopper 71, the inner and outer inclined surfaces leading to the hopper outlet 71a are stored. Concerning the inclination angles θ1 and θ2, θ1 <θ2, that is, the inner side is gently inclined and the outer side is steeply inclined, so that the accumulation in the hopper 71 is made uniform and the work can be efficiently performed as described above. .

(Parking brake)
Next, the parking brake operating mechanism will be described.
18 and 19 are a front view and a side view of the parking brake link, respectively. Brake arms 83L and 83R that are integrated with the left and right brake operation shafts 82L and 82R are provided on the front side of the traveling transmission unit 81, and the reverse arm 85 is connected to the reverse arm 85 via link plates 84L and 84R that extend laterally from the respective upper ends. The reverse arm 85 is connected to a lower rod 88a interlocking with a pedal 88 on an arm 87 projecting from a rotating shaft 86 having an integral structure extending from one side of the traveling transmission portion 81 to the rear side. Receive power. In addition, a parking member is configured by providing a lock member 89 at the base portion of the pedal 88 to hold the stepping position with a stepped notch by a check operation.

  In the above configuration, one of the left and right link plates 84L and 84R (the left link plate 84L in the figure) is an operating position of the pin 85a of the reverse arm 85 as shown in FIG. An adjustment bolt 84a for adjusting the angle is provided. By adjusting the adjusting bolt 84a, the left and right brake discs (not shown) installed in the traveling transmission portion 81 are pressed against each other through the opposing operation of the left and right link plates 84L and 84R accompanying the turning operation of the reverse arm 85. The operation timing can be aligned.

  Further, a front shaft support portion 86a that supports the rotation shaft 86 is provided on the front surface side of the traveling transmission portion 81, and the front shaft support portion 86a moves the shaft end of the rotation shaft 86 left and right by a horizontally long oblong hole 86b. By supporting the idle shaft so as to be operable, the reverse arm 85 can be used as an equalizer, and the rotational torque can be equally applied to the left and right link plates 84L and 84R to apply the same braking force to the left and right. Further, it becomes possible to secure the position accuracy of the fulcrum by absorbing the assembly accumulated error such as the phase of the side clutch shaft and to prevent the abnormal wear of the bearing due to the inclination of the rotation shaft 86.

  Further, as shown in FIG. 21A, a rear view of the main part is provided on the rear surface side of the traveling transmission portion 81, and a rear shaft support portion 86c is provided to support the rotating shaft 86. In the arm 87, an extension arm 92 connected to the lowering rod 88a at the extended position A is pivotally supported on the end B of the arm 87, and the extension arm 92 extends to the opposite side of the lowering rod 88a to rotate the pivot shaft 86. The spring 93 is connected to a position D beyond the contact point C and is in pressure contact with the rotating shaft 86.

  When the extension arm 92 receives a spring moment due to the distance between the CDs, the extension arm 92 responds to the acting force P from the release position by the stopper 86d of the rear shaft support portion 86c by the return moment exceeding the self-weight due to the distance between the CAs received from the descending rod 88a. When the arm 87 reaches the rotation limit and further receives the acting force P when the arm 87 reaches the rotation limit, as shown in FIG. The reaction force at the contact point C disappears by floating, and the acting moment due to the distance between the BAs received from the descending rod 88a balances with the spring moment due to the distance between the BDs of the abutting portions 92a, and the acting amount of the descending rod 88a increases. However, since the balance state is maintained and it functions as a torque limiter, the lowering rod 88a Excessive acting force is restricted to undergo et al.

  As shown in FIG. 22, the relationship between the depression amount of the pedal 88 and the depression force increases as the depression amount S increases corresponding to the depression force F without play by stepping over the return holding force F0. When the side clutch release start position Sc reaches the brake start position Sb, the reaction force rapidly increases due to the pressure contact of the brake disc, and the torque limiter is operated by the stepping force FL that balances the moment acting on the extension arm 92 with the spring moment. For this reason, even if the stepping is further advanced, the stepping force F is kept within the reaction force range of the spring 93. Here, when the pedal 88 is released, the brake force is maintained by holding the pedal 88 in the corresponding notch positions S1 to S4 of the lock member 89.

  The parking brake operating mechanism having the above-described configuration does not require a large operating force like a wire type operating mechanism with low transmission force efficiency, and the brake operation and the brake can be performed evenly on the left and right with high precision timing by simple pedal operation within a certain range. In addition to securing the force, stable operation characteristics can be maintained by simple maintenance even when the characteristics of the clutch and brake change over time.

(Mowing part)
The cutting part is provided with a hook-like floating divider, and the cutting part is configured to be able to perform a rolling operation by the support reaction force. That is, as shown in the side view of the main part of FIG. 23, the cutting unit 101 includes the floating divider 102 at the lower portion, and the receiving portion 104 a of the upper and lower pistons 104 at the front end portion of the post-cutting frame 103 and the front frame 105. A rotating unit 106 is formed between them.

  As shown in a side view (a) and a front view (b) in FIG. 24, the rotating portion 106 has two end-fitting flanges 111 a and 11 b and two U-shaped connecting fittings 112 a and 112 a on one side. On the other hand, two similar connecting fittings 112b and 112b are bolted to each other, and a total of four connecting fittings 112a, 112b... Connect with

  Due to the pivoting action of the pivoting part 106, the cutting part 101 is kept horizontal when no load is applied from the floating divider 102, and the cutting part 101 is cut horizontally along the floating divider 102 even when the vehicle body is tilted. Can work.

DESCRIPTION OF SYMBOLS 1a Airframe outer frame 3 Threshing device 4 Harvesting device 5 Grain storage device 6 Control part 11 Engine part 12 Cabin 16 Inner arm 17 Outer arm 17a Intermediate connection part 20 Support frame 20a Slide support part

Claims (1)

A reaping device (4) that harvests cereals at the front of the machine body, a threshing device (3) that receives the reaping cereals at the rear of the reaping device (4), and a side of the threshing device (3) An engine part (11) disposed between the grain storage device (5) for storing the threshed grain and the reaping device (4) on the front side of the grain storage device (5), and the engine part (11) In a combine provided with a cabin (12) provided with a control part (6) covering the upper side of
The steering part (6) is connected laterally to the inner and outer positions of the steering part (6) in the lateral direction to the outer side of the engine part (11) by an inner arm (16) and an outer arm (17) that can be turned laterally. And one end of the support frame (20) is pivotally attached to the middle portion of the outer arm (17) along the vertical axis, and the other end of the support frame (20) is attached to the outer side of the body. A combine characterized by being axially attached to a slide support portion (20a) that is slidably supported.

Images