JP2001037318A - Reaping part supporting structure for reaping harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simply constitute a supporting structure for holding a reaping part along an operation position and a non-operation position around a longitudinal shaft center of the front of a machine body in a reaping harvester. SOLUTION: This reaping part supporting structure for a reaping harvester is equipped with a first supporting frame 15 swingable around a longitudinal shaft center p1 in the vicinity of the front side part of a machine body at the opposite side of a driving part and a second supporting frame 16 extended from the first supporting frame 16 sideways in a cantilevered manner. A reaping part is supported on the second supporting frame 16 and is constituted to be freely workable from an operation position to be arranged at the side of the driving part to a nonoperation position to be swung around the longitudinal shaft center P1 and to be opened sideways. The structure is equipped with a supporting part 17 for holding the end part of the second supporting frame 16 from the lower side at the operation position and a retaining part 20 changeable in attitude from a retaining attitude to be covered with the end part of the second supporting frame 16 from the upper side and a separation attitude to be separated from the end part of the second supporting frame 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a construction for performing maintenance on a harvester such as a combine for rice or a rush harvester.

[0002]

2. Description of the Related Art In a combine harvester, which is an example of a reaper and harvester, it is sometimes difficult to perform a maintenance operation when an abnormality occurs near a connecting portion between a front portion of a machine body and a reaper or inside a reaper. Thereby, in the combine where the driving unit and the reaping unit are arranged side by side on the front part of the fuselage,
The reaping unit is operably supported over a working position where the reaping unit is arranged beside the operating unit and a non-working position where the reaping unit swings around the longitudinal axis of the front of the machine and opens sideways, and the reaping unit is operably supported. It has been proposed to make it easy to perform maintenance work near the connecting portion between the reaping unit and the inside of the reaping unit.

[0003]

As described above, when the reaping unit is configured to be swingable around the longitudinal axis of the front part of the machine body between the working position and the non-working position, the support structure of the reaping unit is simplified. It is necessary to ensure that the mowing unit is supported at the working position without fail. According to the present invention, in a reaper support structure of a reaper, when the reaper is configured to be swingable around a longitudinal axis of a front part of the body over a working position and a non-working position, the support structure of the reaper is simplified. It is an object of the present invention to ensure that the mowing unit is reliably supported at the working position.

[0004]

According to a first aspect of the present invention, in a case where an operating section and a reaping section are arranged side by side at the front of the body, a front side of the body opposite to the operating section is provided. A first support frame is swingably provided around a vertical axis near a lateral side portion, and a second support frame extends sideways from the first support frame in a cantilever manner. The part is supported. Thus, by operating the first support frame about the axis of the vertical axis, the mowing unit can be operated over the working position arranged beside the operating unit and the non-working position opened laterally.

[0005] According to the first aspect of the present invention, the longitudinal axis of the first support frame is provided near the front side of the fuselage.
When the mowing unit is operated from the working position to the non-working position, the front part of the machine body can be largely opened, and the mowing unit can be operated from the working position to the non-working position without interfering with the driving unit. .

[II] According to the feature of claim 1, the support portion and the holding portion are provided on the body, and the end of the second support frame is supported by the support portion from below in the working position,
By setting the holding part in the holding posture, the end of the second support frame is held by the supporting part and the holding part. Thereby, one of the second support frames is supported by the first support frame, and the other of the second support frames is supported by the support portion and the holding portion, and the second support frame is supported with sufficient strength. You.

In this case, at the working position, the end of the second support frame is supported by the support from below, and the holding portion is set in the holding posture, whereby the holding portion is placed on the end of the second support frame from above. As a result, the end of the second support frame is securely supported without moving. Holder second
If you set it to a separated position away from the end of the support frame, when operating the reaper from the working position to the non-working position,
The end portion of the second support frame can be separated from the support portion without being disturbed by the holding portion, and when the cutting unit is operated from the non-working position to the working position, the second support frame can be moved without being disturbed by the holding portion. 2 The end of the support frame can be supported by the support.

[III] According to the feature of the second aspect, similar to the case of the first aspect, the "action" described in the above [I] and [II] is provided, and in addition to this, the following "action" is provided. "
It has. According to the feature of the second aspect, the second support frame is rotatably supported by the first support frame, and the end of the second support frame is rotatably supported by the support portion and the holding portion at the working position. Thereby, by rotating and driving the second support frame in the working position, in a state where both one and the other of the second support frame are supported,
The mowing part supported by the second support frame can be stably moved up and down.

[IV] According to the feature of claim 3, similar to the case of claim 2, the "action" described in the above [I], [II] and [III] is provided. It has various “actions”. According to the third aspect of the present invention, when the mowing unit is driven to move up to the predetermined height, the lowering prevention mechanism is automatically in the blocking state, and the mowing unit cannot be lowered from the predetermined height. Thereafter, the mowing unit can be operated from the working position to the non-working position while the mowing unit is raised to a predetermined height and held.

Thus, even in a place where the body sinks, for example, in a field, the mowing unit is moved to the non-working position while the mowing unit is raised to a predetermined height and held, so that the mowing unit is moved to the ground. It is possible to avoid such a state that the user cannot operate the non-working position by touching the ground. In this case, when the mowing unit is driven up to a predetermined height,
Since the lowering prevention mechanism is automatically in the prevention state, there is no need to perform an operation of driving the cutting unit up and then fixing the cutting unit so as not to lower.

[V] According to the feature of claim 4, claim 3
"Action" described in [I] to [IV] above as in the case of
In addition to this, the following “action” is provided. Even in a normal harvesting operation, the reaping and harvesting machine sometimes drives the reaping unit largely up when, for example, turning at the end of the work site or entering the work site from the road (exiting from the work site to the road). .

According to the feature of the fourth aspect, the lowering prevention mechanism may be operated in a stopped state during the harvesting operation as described above. As described above, if the lowering prevention mechanism is operated in the stop state, the lowering prevention mechanism does not enter the blocking state and the lowering prevention mechanism is in the blocking state even if the reaping unit is largely driven upward during the harvesting operation as described above. Does not occur and the mowing part cannot be lowered. Conversely, when operating the reaper from the working position to the non-working position, the lowering prevention mechanism may be set to the automatic state. As a result, when the reaping unit is driven up to a predetermined height, the descent prevention mechanism is automatically in a blocking state, and the reaping unit cannot be lowered, and the reaping unit is operated from the working position to the non-working position. Can be.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS [1] FIGS. 1 and 2 show a combine as an example of a reaper. At the front of the body supported by the pair of left and right crawler traveling devices 1, an operating unit 2 and a reaping unit 3 are arranged side by side, and a threshing device 4 and a Glen tank 5 are supported on the body.

As shown in FIGS. 3 and 4, the mowing unit 3 includes a raising device 6, a clipper-type mowing device 7, a packer 8 for collecting the cut culm, and a tip side of the collected culm. Engaging and conveying device 9 for conveying, nipping and conveying device 53 for nipping and conveying the root side of the collected grain culm, and engaging and conveying device 9
And a transport device 11 for transferring the cereals from the pinching transport device 53 to the feed chain 10 of the threshing device 4 and the like, and the entire cutting unit 3 is supported by a pipe-shaped support frame 12. .

The nipping / conveying device 53 is configured such that the end side is pivoted up and down with the starting end as a fulcrum, so that the position of the grain stalk held by the feed chain 10 is adjusted (handling depth adjustment). As shown in FIGS. 5 and 6, the trailing wheel 5 of the transport chain 54 is
5 is supported so as to be slidable in the left-right direction on the paper surface, and a spring 57 is provided to bias the support rod 56 rightward on the paper surface (the tension side of the transport chain 54). A leaf spring 58 is bent in a U-shape and one end is fixed, and a support rod 56 is inserted into an opening (not shown) at the other end. Thus, when the support rod 56 moves rightward on the paper surface by the spring 57, the opening of the leaf spring 58 hits the support rod 56 obliquely, and the support rod 56 moves leftward on the paper surface (the loose side of the transport chain 54). Is configured to be stopped.

[2] Next, the support structure of the support frame 12 in the mowing section 3 will be described. As shown in FIGS. 3, 7, and 8, a hydraulic oil tank 14 is fixed to a horizontal frame 13 at the front end of the body, and a support portion 13a of the horizontal frame 13 is provided.
The round pipe-shaped column 15 is rotatably supported around the longitudinal axis P1 by the bracket 14a fixed to the hydraulic oil tank 14. As shown in FIG. 2, the strut 15 is located near the lateral side of the front of the fuselage on the opposite side to the driving unit 2,
It is located near the front end of the feed chain 10. FIG.
As shown in FIG. 8, a round pipe-shaped support case 1 is provided on a boss 15a integrally formed laterally on an upper portion of a support post 15.
6 is rotatably fitted around the horizontal axis P2 of the boss 15a, and the support frame 12 is attached to the end of the support case 16.
Are connected.

As shown in FIG. 7 and FIG. 9, the hydraulic oil tank 14 has a side opposite to the bracket 14a (the operating section 2).
The support base 17 is fixed to the portion (side), and the end of the support case 16 is rotatably held by the support base 17. As shown in FIG. 3, a single-acting hydraulic cylinder 18 is disposed below the hydraulic oil tank 14, and a bifurcated connecting portion 19 fixed to a lower surface near the middle of the support frame 12 is provided with a piston of the hydraulic cylinder 18. The rod 18a is connected. Thus, the support frame 12 and the support case 16 are swingably driven around the horizontal axis P2 by the boss 15a and the support base 17 by driving the hydraulic cylinder 18 to expand and contract.
The reaping unit 3 is driven up and down.

[3] Next, the support case 1 on the support base 17
The holding structure of No. 6 will be described. As shown in FIGS. 7 and 9, the upper surface of the support 17 is formed in a semicircular shape in a side view (see FIG. 10), and the end of the support case 16 is placed on the upper surface of the support 17. The holding member 20 (see FIG. 10), which is semicircular in side view, is swingably supported around the horizontal axis P3 of the support 17. 9 and 1
As shown in FIGS. 1 (a) and (b), a bifurcated fixing portion 17a is formed in a portion of the support base 17 opposite to the position of the horizontal axis P3, and a connecting pin is formed in an opening 17b of the fixing portion 17a. 21 is provided slidably. At a portion of the support base 17 opposite to the support frame 12, a fixed lever 22 is swingably supported around the horizontal axis P4,
The rear end of the fixed lever 22 has a pin and a long hole structure.
And the fixed lever 22 is moved to the position shown in FIG.
A tension spring 23 that urges the user to the left in FIG.

With the above structure, FIGS. 10 to 9 and FIG.
As shown in FIG. 1 (b), the end of the support case 16 is placed on the upper surface of the support base 17, and the holding member 20 is rotated about the horizontal axis P3 to cover the end of the support case 16 from above, thereby holding the support case. The distal end of the member 20 is inserted between the fixing portions 17a, and the fixing lever 22 is operated to the left in FIG.
As shown in (a), by inserting the connecting pin 21 over the opening 17b of the fixing portion 17a and the opening 20a of the holding member 20, the support base 17 holds the end of the support case 16 rotatably. .

[4] When the mowing unit 3 is driven up to a predetermined height (a position slightly lower than the ascending limit), the mowing unit 3 is configured to be prevented from descending from the predetermined height.
Next, this configuration will be described. 7 and 12 (a)
As shown in FIG. 12, a horizontal plate portion 15b and a pair of vertical plate portions 15c are integrally formed on the upper portion of the support column 15, and the stopper pin 24 extends over the pair of vertical plate portions 15c of the support column 15 in FIG.
It is slidably supported in the left-right direction of the paper of (a). A vertical plate portion 16a is formed integrally with the support case 16,
The vertical plate portion 16a of the support case 16 is
c, the vertical plate portion 16a of the support case 16
12 (b) and FIG.
3 (a)) (the length of the long hole 16b in the long radius direction is slightly larger than the outer diameter of the stopper pin 24). As shown in FIGS. 7 and 12A, one end of the helical spring 26 is connected to the stopper pin 24,
At the other end of the helical spring 26, a loop 26 a of the helical spring 26 is attached to a support pin 25 a of the horizontal plate portion 15 b of the column 15.

In the state shown in FIGS. 7 and 12A, the stopper pin 24 is
5 does not protrude from the vertical plate portion 15c,
Is driven to the upper limit, and even if the elongated hole 16b of the vertical plate 16a of the support case 16 reaches the position of the stopper pin 24, the stopper pin 24 enters the elongated hole 16b of the vertical plate 16a of the support case 16. Never. Thus, the mowing unit 3 can be driven up and down freely.

As shown in FIG. 12B, by holding the other end 26b of the helical spring 26 by hand, the loop 26a of the helical spring 26 is removed from the support pin 25a, and the horizontal plate 15b Of the helical spring 2 to another support pin 25b of
6, the biasing force is generated in the helical spring 26, and the stopper pin 24 is
From the vertical plate portion 15c. In this state, when the mowing unit 3 is driven to move up to a predetermined height (a position slightly lower than the ascending limit), FIGS. 12 (a) and 13 (a) to FIGS. 12 (b) and 13 (b) As shown in FIG. 3, the long hole 16b of the vertical plate portion 16a of the support case 16 is
At the position 4, the stopper pin 24 projects and enters the long hole 16b of the vertical plate portion 16a of the support case 16.
As a result, the mowing unit 3 does not descend.

[5] Next, the transmission structure to the mowing unit 3 will be described. As shown in FIG. 14, an engine 37 is disposed below the operation unit 2, and the power of the engine 37 is transmitted from an output pulley 37 a to an input pulley 39 a of a hydrostatic continuously variable transmission 39 via a transmission belt 38. , From the transmission case 40 to the crawler traveling device 1. The power immediately before shifting in the transmission case 40 is
7 from the output pulley 40a via the transmission belt 30.
14, the power transmitted to the input pulley 31 of the support case 16 and the power transmitted to the input pulley 31 is transmitted via a transmission shaft 63 disposed inside the support case 16 and the support frame 12. It is transmitted to the raising device 6 and the reaper 7 of the reaper 3.

As shown in FIGS.
A tension arm 41 is swingably supported around a horizontal axis P6 of the shaft, and a tension pulley 41a for the transmission belt 30 is supported by the tension arm 41 to transmit power to the input pulley 31 and cut off transmission. A clutch is configured. Feed chain 10
A feed chain clutch 48 is provided, which is capable of transmitting and blocking power to and from the power transmission side (see FIG. 1), and is urged to the transmission side. A linking member 50 is connected to a wire 49 connected to the feed chain clutch 48. At the transmission position of the tension arm 41, the pin 41d of the arm 41c fixed to the tension arm 41 is located at an intermediate position between the long holes 50a of the linking member 50.

As shown in FIGS. 15 and 16, a cutting clutch lever 42 is swingably supported around a horizontal axis P7 of a fixed portion of the operating section 2, and the arm 4 of the cutting clutch lever 42
An L-shaped linking member 44 in side view is swingably attached to 2a, and one end of an outer 43a of a release-type wire 43 is fixed to the linking member 44. As shown in FIGS. 16 and 7, the arm 41 b fixed to the tension arm 41 and one end of the inner 43 b of the wire 43 are
A tension spring 52 is connected via a tension spring 45 and biases the tension arm 41 to the transmission blocking side.
(The biasing force is weaker than the tension spring 45), but is connected to the tension arm 41.

As shown in FIGS. 7, 8, and 16, in the vicinity of the bracket 14a of the hydraulic oil tank 14, an L-shaped operation arm 46 in side view is supported so as to be swingable around a horizontal axis P8. The inner 43b extends and is connected to the operation arm 46. In the state shown in FIGS. 8, 13 (a) and 16, the mowing part 3 is lowered, the roller 16b of the vertical plate part 16a of the support case 16 contacts the arm part 46a of the operating arm 46, and the operating arm 46 is moved. This is a state in which the inner 43b of the wire 43 is pulled toward the operation arm 46 by swinging clockwise in the drawing.

As shown in FIG. 16, the inner 43b is exposed in the middle of the wire 43, and the outer 43a of the wire 43 is fixed to the support plate 47. A long hole 47a is formed in the support plate 47 along the inner 43b of the wire 43.
Is formed, and the position of the cylindrical regulating member 51 can be changed along the elongated hole 47a of the support plate 47 (the ON position and the OFF position shown in FIG. 16), and the position can be changed by tightening the manually rotating screw portion 51a. The inner member 43 b of the wire 43 is slidably passed through an opening of the regulating member 51.

[6] Next, the transmission of the cutting clutch and the transmission cutoff operation will be described. The state shown in FIG. 16 is a state in which the regulating member 51 is fixed at the ON position and the mowing unit 3 is lowered, and the operation arm 46 is swung clockwise in the drawing to operate the inner 43b of the wire 43. Arm 4
The pulling operation is performed to the sixth side, and there is no slack in the inner 43b of the wire 43. In this state, as shown in FIG.
When the cutting clutch lever 42 is operated to the transmission position, one end of the inner 43b of the wire 43 and the extension spring 45 are pulled toward the cutting clutch lever 42 together with the linking member 44 and one end of the outer 43a of the wire 43, The tension arm 41 is operated to the transmission position, the tension of the transmission belt 30 is maintained by the tension spring 45, and the power is transmitted to the input pulley 31.

As shown in FIG. 16, when the cutting clutch lever 42 is operated to the transmission cutoff position, the wire 43 is connected together with the linking member 44 and one end of the outer 43a of the wire 43.
One end of the inner 43b and the tension spring 45 are operated to return, and the tension arm 41 is operated to the transmission blocking side by the tension spring 52, so that the power to the input pulley 31 is blocked. When the tension arm 52 is operated to the transmission blocking side by the tension spring 52, the elongated hole 50a of the link member 50 and the pin 41d of the arm 41c shown in FIG.
After the power to the input pulley 31 is cut off by the action of (1), the wire 49 is pulled toward the arm 41c, and the feed chain clutch 48 is operated to the transmission cutoff side.

As shown in FIGS. 17 and 13 (a), the regulating member 51 is fixed at the ON position,
When the mowing unit 3 is moved to the transmission position and the mowing unit 3 is moved up from the state in which the mowing unit 3 is lowered, the vertical plate of the support case 16 is in the range of raising and lowering the mowing unit 3 during normal harvesting work. The state in which the roller 16b of the portion 16a does not separate from the arm portion 46a of the operation arm 46, the state in which the inner 43b of the wire 43 is pulled toward the operation arm 46 is maintained, and the power is transmitted to the input pulley 31. Will be maintained.

For example, as in the case of turning on a ridge, the cutting section 3
Is driven up to a predetermined height (a position slightly below the upper limit), the rollers 16b of the vertical plate portion 16a of the support case 16 are moved by the arms of the operation arm 46 as shown in FIGS. The part 43a is separated from the inner part 43a, and the inner 43b of the wire 43 is returned to the tension arm 41 side (by the urging force of the tension spring 52). Then, the power to the input pulley 31 is shut off, and the feed chain clutch 48 is operated to the transmission cutoff side.

It is assumed that the regulating member 51 shown in FIG. 19 is moved from the ON position to the OFF position and fixed. When the regulating member 51 is moved to the OFF position in this manner, the wire 43
The restricting member 51 comes into contact with the ring member 59 fixed to the inner 43b, and the ring member 59 is moved to the OFF position together with the restricting member 51, and the inner 43b of the wire 43 is entirely moved to the operation arm 46 side. Moved to
The inner 43b of the wire 43 on the operation arm 46 side
Is a state where slack occurs. In this case, the inner spring 43b of the wire 43 is slightly pulled on the tension spring 45 side to increase the urging force of the tension spring 45. Regardless of this, the cutting clutch lever 42 is operated to the transmission position and the transmission cutoff position. By doing so, Figure 1
As shown in FIGS. 9 and 20, power can be transmitted to the input pulley 31 and transmission can be interrupted.

As shown in FIG. 19, the regulating member 51 is turned off.
In the fixed state, the mowing clutch lever 42 is operated to the transmission position as shown in FIG. 20, and the mowing unit 3 is lowered from the state in which the mowing unit 3 is lowered to a predetermined height (slightly lower than the upper limit). Position). in this case,
When the regulating member 51 is fixed at the OFF position, the mowing unit 3 is driven to move upward and the vertical plate portion 16a of the support case 16 is moved.
The roller 16b of the arm 46a of the operation arm 46
Since the inner member 43b of the wire 43 and the ring member 59 are stopped by the regulating member 51 even when away from the
The state where the inner power 43b of the wire 43 cannot return to the tension arm 41 side and the power is transmitted to the input pulley 31 is maintained.

[7] Next, a description will be given of a state where the reaper 3 is opened sideways when maintenance work is performed near the connection between the front portion of the machine body and the reaper 3 or inside the reaper 3. As shown in the previous section [4] and FIG. 12 (b), the loop portion 26a of the helical spring 26 is
b attached to another support pin 25b of the hydraulic cylinder 1
8 is driven to extend to drive the reaper 3 upward, and FIG.
13 (a) to 13 (b) and FIG. 13 (b), when the cutting unit 3 is driven up to a predetermined height (a position slightly lower than the rising limit), the stopper pin 2
4 is inserted into the long hole 16b of the vertical plate portion 16a of the support case 16 so that the reaper 3 does not descend. The stopper pin 24 is provided in the elongated hole 16 of the vertical plate 16a of the support case 16.
b, it is necessary to stop the hydraulic cylinder 18 immediately. However, the stopper pin 24 is inserted into the long hole 16b of the vertical plate portion 16a of the support case 16 so that even if the stop of the hydraulic cylinder 18 is delayed, no excessive force is applied. After entering, only in the range of the long hole 16b of the vertical plate portion 16a of the support case 16,
The mowing unit 3 can be driven upward.

In this case, if the cutting clutch lever 42 is operated to the transmission position and the regulating member 51 is fixed at the ON position as shown in the above item [6] and FIG.
18, the power to the input pulley 31 is automatically cut off, and the feed chain clutch 48 is operated to the transmission cutoff side. As shown in FIG.
Is fixed to the OFF position, the cutting clutch lever 42 is operated to the transmission cutoff position, and the input pulley 31 is turned off.
And the feed chain clutch 48 is operated to the transmission cutoff side. In this way, the tension pulley 41a is separated from the transmission belt 30, the transmission belt 30 is loosened, and then the transmission belt 30 is removed from the input pulley 31.

As shown in FIGS. 3, 23 and 24, the connecting pin 27 connecting the connecting portion 19 of the support frame 12 and the piston rod 18a of the hydraulic cylinder 18 is removed. A beta-shaped retaining pin 28 is attached to the connecting pin 27, and a bifurcated stopper plate 29 fixed to a side surface of the connecting portion 19.
The stopper pin 28 is inserted into the connector pin 27 to prevent the connecting pin 27 from rotating and retaining.

In the above-mentioned state, the weight of the mowing part 3 is applied to the hydraulic cylinder 18 (the connecting pin 27), so that the connecting pin 27 cannot be easily removed due to a large frictional resistance. In this case, the hydraulic cylinder 18 is slightly contracted and driven so that the weight of the reaper 3 is reduced by the stopper pin 24 (FIG. 12).
(See (b) and FIG. 13 (b)), the retaining pin 28 is pulled out of the connecting pin 27, and the gripping portion 27a of the connecting pin 27 is pulled out of the connecting pin 27.

As shown in FIGS. 11 (a) to 11 (b), the fixing lever 22 is operated rightward on the paper to
Is pulled out of the opening 20a of the holding member 20, and the holding member 20 is turned around the horizontal axis P3 on the side opposite to the fixing lever 22 as shown in FIG. As a result, FIG.
As shown in FIG. 1 (b) and FIG.
The mowing unit 3 is opened to the side opposite to the operating unit 2 so as to be rotated around and operated.

As shown in FIGS. 4, 25, and 26, the grain stem passed from the supply device 11 to the feed chain 10 is contacted from below with the stem side, and the grain stem side is laid on its side. A stock former payment rod 32 for facilitating delivery to the feed chain 10 is provided so as to protrude laterally outward from the lower surface of the supply device 11. As shown in FIGS. 25, 26, 27, and 28, the stock former payment bar 32 is rotatably and slidably supported by a U-shaped bracket 33 fixed to the lower surface of the supply device 11. The portion 32a is provided with a pair of holes 32b, and a spring 34 is attached to the stock payment rod 32 so as to press the flange portion 32a of the stock payment rod 32 against the bracket 33.

Thus, the pins 33a of the bracket 33
Is inserted into one hole 32b of the stock prepayment rod 32, whereby the stock prepayment rod 32 is maintained in a normal posture (see a solid line in FIG. 26). As described above, when the mowing unit 3 is opened to the side opposite to the driving unit 2, the stock payment rod 32 is slid against the spring 34, and one hole 32 b of the stock payment rod 32 is inserted into the bracket 33. Withdrawing from the pin 33a, the stock payment rod 32 is set downward, and the pin 33a of the bracket 33 is inserted into the other hole 32b of the stock payment rod 32.
By setting the stock prepayment rod 32 in the downward direction (see the two-dot chain line in FIG. 26), the reaping unit 3 is moved to the operation unit 2.
When the opening operation is performed on the side opposite to the above, it is possible to avoid a state in which the stock former payment rod 32 hits the vicinity of the feed chain 10.

As shown in FIGS. 1 and 2, a translucent resin dust cover 35 is provided on the upper part of the mowing part 3. The dust cover 35 is used to prevent dust and dust from rising. As shown in FIGS. 1 and 7, a frame 36 fixed to an end of the support case 16 is extended upward, and a dustproof cover 35 is vertically swingable around a horizontal axis P5 at an upper portion of the frame 36. Supported. As a result, when the cutting unit 3 is opened to the side opposite to the operation unit 2 as shown in FIG.
And is opened to the side opposite to the driving unit 2 to be operated.

[8] As described in the preceding section [7], when the cutting unit 3 is opened to the side opposite to the driving unit 2 and then returned to the original state, FIGS. From FIG. 21
(B) and as shown in FIG.
Rotate the support case 17 so that the support case 16
Put the end of the. In this case, as shown in FIG. 10, the end of the support case 16 rests on the upper surface of the support base 17 while contacting the base 20b of the holding member 20, so that the holding member 20 is moved around the horizontal axis P3 by the contacting action. Is pivoted to cover the end of the support case 16. The reaper 3 is driven up to a predetermined height (a position slightly lower than the upper limit), and the stopper pin 24 is moved to the vertical plate 16 of the support case 16.
The mowing part 3 does not descend into the long hole 16b of FIG. 7A (see FIGS. 12B and 13B).

As a result, FIG.
As shown in (a), the tip of the holding member 20 is fixed to the fixing portion 17.
a, the fixing lever 22 is operated to the left in the drawing, and the connecting pin 21 is inserted across the opening 17 b of the fixing portion 17 a and the opening 20 a of the holding member 20.
Hold the end of Drive the transmission belt 30 to the input pulley 31
26 (see FIGS. 7 and 15), the pin 33a of the bracket 33 is inserted into one of the holes 32b of the stock payment rod 32 as shown by the solid line in FIG. 26, and the stock payment rod 32 is returned to the normal posture.

The expansion and contraction operation of the hydraulic cylinder 18 as described in the preceding items [4] to [7] is performed by the operation lever 60 shown in FIGS. 1, 2 and 3. When the operation lever 60 is pulled backward, A control valve (not shown) for supplying / discharging the hydraulic oil to / from the hydraulic cylinder 18 is operated to a supply position of the hydraulic oil, the hydraulic oil is supplied to the hydraulic cylinder 18, the hydraulic cylinder 18 is extended, and the cutting unit 3 is moved. Driven up. Conversely, when the operation lever 60 is pushed forward, the control valve is operated to the oil discharge position, the hydraulic oil is discharged from the hydraulic cylinder 18, the hydraulic cylinder 18 is contracted, and the reaping unit 3 is driven downward.

As shown in FIG. 29, a bar member 62 is attached between the fixed handle 61 and the operation lever 60 to hold the operation lever 60 in a state where the operation lever 60 is pushed forward. As a result, the control valve is operated to the oil discharge position, and the hydraulic cylinder 18
From which the hydraulic oil is discharged. As a result, the piston rod 18a of the hydraulic cylinder 18 is manually connected to the connecting portion 1
9 and the connecting pin 27 (the tip is formed in a tapered shape) is inserted as shown in FIGS. 23 and 24, and the retaining pin 28 is inserted into the connecting pin 27.
As shown in FIGS. 12 (b) to 12 (a), the other end 26b of the helical spring 26 is held by hand and the helical spring 2
6 is removed from the support pin 25b,
5 is attached to the support pin 25a of the horizontal plate portion 15b.
6 and the stopper 26
Does not protrude from the vertical plate portion 15c of the column 15.

[Another Embodiment of the Invention] FIG.
In the helical spring 26 of the stopper pin 24 shown in (b), a switching lever (not shown) provided on the driving unit 2
Thereby, the helical spring 26 may be configured to be able to be operated in a state in which the stopper pin 24 is urged to the projecting side (automatic state) and in a state in which the stopper pin 24 is not urged to the projecting side (stop state). .

By supporting the hydraulic cylinder 18 on a support portion (not shown) extending from the support column 15, FIG.
As shown in FIG. 2, when the cutting unit 3 is opened to the side opposite to the operation unit 2, the piston rod 1 of the hydraulic cylinder 18 is opened.
8a may be configured so as not to be removed from the connecting portion 19 shown in FIGS. In this case, a mechanism corresponding to the stopper pin 24 may be provided in the hydraulic cylinder 18.

[0048]

According to the first aspect of the present invention, in the reaper support structure of the reaper, the first support frame is swingable about the longitudinal axis near the front side of the body opposite to the operating unit. ,
A second support frame extending laterally in a cantilever manner from the first support frame, and the cutting section supported by the second support frame; It has become possible to simply configure a support structure that operably supports the reaper over the working position and the non-working position that opens to the side. According to the features of claim 1, in a reaper harvester in which an operating unit and a reaping unit are arranged side by side at the front of the body, the longitudinal axis of the first support frame is set to the front of the body opposite to the operating unit. By arranging it near the side, the mowing unit can be operated from the working position to the non-working position without interfering with the driving unit, and the front part of the machine can be widely opened. The workability and maintainability of the harvester could be improved.

According to the first aspect of the present invention, the end of the second support frame is securely held by the support portion and the holding portion without moving in the working position, and one and the other of the second support frame are moved to the first position. The first support frame, the support portion, and the holding portion supported the second support frame with sufficient strength, so that the support strength of the mowing portion could be improved. According to the first aspect of the present invention, by setting the holding portion in the separated posture, the end of the second support frame is separated from the supporting portion without being disturbed by the holding portion, and the reaping portion is moved from the working position to the non-working position. Can be operated
The end portion of the second support frame is supported by the support portion without being disturbed by the holding portion, and the mowing portion can be operated from the non-working position to the working position, so that the operability of the mowing portion is improved. I was able to make things.

According to the feature of claim 2, the "effect of the invention" of the above-mentioned claim 1 is provided similarly to the case of the claim 1, and in addition to the "effect of the invention", the following "invention" is provided. Of the effect. According to the features of claim 2, one and the other of the second support frame are rotatably supported by the first support frame, the support portion and the holding portion, and the mowing portion supported by the second support frame is stably moved up and down. As a result, it is possible to improve the supporting strength when the mowing unit is driven up and down.

According to the feature of the third aspect, similar to the case of the second aspect, the above-mentioned "effect of the invention" of the second aspect is provided, and in addition to the "effect of the invention", the following "invention" is provided. Of the effect. According to the feature of claim 3, the mowing unit is configured to be able to be operated from the working position to the non-working position in a state where the mowing unit is raised to a predetermined height and held. The reaper can be operated from the working position to the non-working position without hindrance even in a place where the water sinks, and the workability and maintainability of the reaper / harvester can be improved. According to the feature of claim 3, when the cutting unit is driven up to a predetermined height, the lowering prevention mechanism is automatically put into a blocking state and the cutting unit is held, so that the cutting unit is driven up and then the cutting unit is driven. It is no longer necessary to perform an operation of fixing the vine so that it does not descend, and the operability of the reaper can be improved.

According to the feature of the fourth aspect, the "effect of the invention" of the third aspect is provided similarly to the case of the third aspect, and in addition to the "effect of the invention", the following "invention" is provided. Of the effect. According to the feature of claim 4, even if the mowing part is driven up to a predetermined height, the lowering prevention mechanism can be operated in a stopped state in which the lowering prevention mechanism does not become a blocking state. Even if the mowing part is largely driven upward when entering the work place from the road or on the road (when exiting from the work place to the road), the mowing part can be driven down without hindrance thereafter. Could be further improved.

[Brief description of the drawings]

FIG. 1 is an overall side view of a combine.

FIG. 2 is an overall plan view of the combine.

FIG. 3 is a side view of a combine harvester and its vicinity;

FIG. 4 is a plan view showing a conveying system for grain culms in a cutting section.

FIG. 5 is a plan view showing the vicinity of the terminal end of the nipping and conveying device in the reaping unit.

FIG. 6 is a side view showing the vicinity of the terminal side of the nipping and conveying device in the cutting section.

FIG. 7 is a front view of the vicinity of a support, a support case, and a support frame in the mowing unit.

FIG. 8 is a side view showing the vicinity of a support in the mowing section.

FIG. 9 is a side view showing the vicinity of a support base and a tension pulley in the mowing section.

FIG. 10 is a side view showing a state where the support case is separated from the support base in the mowing unit.

FIG. 11 is a front view showing the vicinity of a fixing lever of a support base in the mowing section.

FIG. 12 is a plan view of the vicinity of a support post and a stopper pin in the mowing section.

FIG. 13 is a side view showing the vicinity of the operation arm in the reaper.

FIG. 14 is a diagram showing a transmission system from an engine to a transmission case and a reaper.

FIG. 15 is a side view of the vicinity of a tension pulley and a cutting clutch lever in a cutting section.

FIG. 16 is a diagram showing a state in which the cutting clutch lever is operated to the transmission cutoff position with the regulating member fixed to the ON position and the cutting section lowered.

FIG. 17 is a diagram illustrating a state in which the cutting clutch lever is operated to the transmission position with the regulating member fixed to the ON position and the cutting section lowered.

FIG. 18 is a diagram showing a state in which the cutting member is raised with the regulating member fixed to the ON position and the cutting clutch lever operated to the transmission position.

FIG. 19 is a diagram showing a state in which the cutting clutch lever is operated to the transmission cutoff position with the regulating member fixed to the OFF position and the cutting section lowered.

FIG. 20 is a diagram showing a state in which the cutting member is raised with the regulating member fixed to the OFF position and the cutting clutch lever operated to the transmission position.

FIG. 21 is a plan view showing the vicinity of a support, a support case, and a support frame in a mowing unit.

FIG. 22 is a plan view showing a state where the mowing unit is opened to the side opposite to the driving unit and is operated.

FIG. 23 is a side view showing a connection portion between the support frame and the hydraulic cylinder in the mowing section.

FIG. 24 is a cross-sectional view showing a connecting portion between the support frame and the hydraulic cylinder in the mowing section.

FIG. 25 is a plan view showing the vicinity of a supply device and a stock former payment bar in a reaping unit.

FIG. 26 is a side view of the vicinity of a supply device and a stock prepayment bar in the reaping unit.

FIG. 27 is a rear view of the vicinity of a stock prepayment stick and a bracket in a reaping unit.

FIG. 28 is an exploded perspective view showing the vicinity of a stock payment rod and a bracket in a reaping unit.

FIG. 29 is a side view showing a fixed handle, an operation lever, and a bar in the driving unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 2 Operating part 3 Cutting part 15 1st support frame 16 2nd support frame 17 support part 20 holding part 24 descent prevention mechanism P1 longitudinal axis

 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Kazutaka Oka 64 Ishizu-Kitamachi, Sakai City, Osaka Prefecture Inside the Kubota Sakai Factory (72) Inventor Noboru 64 Ishizu-Kitamachi, Sakai City, Osaka Prefecture Kubota Sakai Manufacturing Co., Ltd. In-house F term (reference) 2B076 AA03 BA03 CA03 CA06 DD04 2B382 GA09 GB01 GC03 GC04 GD02 HF02 HF07 HF22 HF32

Claims (4)

[Claims] An operation unit and a reaping unit are arranged side by side at the front of a body, and a first support swingable around a longitudinal axis near a lateral side of a body front opposite to the operation unit. A second support frame extending sideways from the first support frame in a cantilevered manner, and the second support frame supporting the reaping unit; and arranging the reaping unit beside the operating unit. The first and second support frames are oscillated about a work position and the longitudinal axis so that the reaper is operable over a non-work position where the reaping portion is opened laterally. A supporting portion that supports the end of the frame from below, a holding position that is placed on the end of the second support frame from above, and a holding portion that can be freely changed to a separated position away from the end of the second support frame. The working position of the second support frame Part of the possible support, and to allow separation of the end portion of the second support frame by the movement of the non-working position of the second supporting frame,
A reaper support structure for a reaper, comprising the support and the holding part. 2. The second support frame is rotatably supported by the first support frame.
The reaping part support structure of the reaper and harvester according to claim 1, wherein the support part and the holding part are configured to rotatably support an end of the support frame, and the reaping part is configured to be able to move up and down. 3. A descent-preventing mechanism that is operated to a blocking state that prevents the mowing portion from descending from the predetermined height when the mowing portion is driven to move up to a predetermined height. Item 3. A reaper support structure for a reaper according to item 2. 4. An automatic state in which the mowing section is driven to move up to a predetermined height to prevent the mowing section from descending from the predetermined height, and the mowing section moves to a predetermined height. 4. The reaping part support structure of a reaper and harvester according to claim 3, wherein said lowering prevention mechanism is configured to be capable of being artificially selected and operated to a stop state in which the stop state does not occur even when the ascent is driven up.