JP2001037319A - Reaping part supporting structure for reaping harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reaping part supporting structure constituted to operate a reaping part so as to be properly opened the reaping part sideways even at a place where a machine body subsides in a reaping harvester. SOLUTION: This reaping part supporting structure for a reaping harvester is equipped with a drop obstruction mechanism 24 to be operated in an obstruction state in which when a reaping part is lifted and driven to a fixed height, the drop of the reaping part from the fixed height is obstructed with the lifting. The structure is provided with supporting mechanisms 15 and 16 for holding the reaping part openably sideways around a longitudinal shaft center P1 at the front of machine body in the obstruction state of the drop obstruction mechanism 24 in which the reaping part is lifted and driven to the fixed height.

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, for example, JP-A-6-31
As disclosed in Japanese Patent No. 9339, around the longitudinal axis at the front of the fuselage (41a in FIGS. 3 and 4 of the aforementioned publication),
Some of the mowing parts (8 in FIGS. 3 and 4 of the above-mentioned publication) are supported to be open and operable laterally, and by operating the mowing part to be laterally operated, the front part of the body is connected to the mowing part. Maintenance work near the connection with the reaping unit and inside the reaping unit is facilitated.

[0003]

In the configuration described in the prior art, the mowing unit is opened sideways at a position where the mowing unit is substantially in contact with the ground without raising the mowing unit. . Thereby, for example, in a flat place such as a pavement road, it is preferable to open the reaping part to the side, and to open the reaping part to the side, the grounding wheel that supports the reaping part is attached to the reaping part. We need to prepare. In other words, in a place where the body sinks, for example, in a field, it may be difficult to open the reaping unit to the side and perform an operation. It is an object of the present invention to provide a mowing unit support structure of a mowing harvester, in which a mowing unit can be properly opened and operated to the side even in a place where the body sinks, for example, in a field. .

[0004]

According to a first aspect of the present invention, when the cutting unit is driven to move up to a predetermined height by the lifting mechanism, the lowering prevention mechanism is automatically stopped, and the cutting unit is moved by the lifting mechanism. Is lowered from the predetermined height, the cutting section cannot be lowered. Thereafter, with the mowing part raised to a predetermined height and held, the mowing part can be opened sideways around the longitudinal axis and operated.

[0005] Thus, even in a place where the body sinks, for example, in a field, the mowing part can be opened to the lateral side around the vertical axis while the mowing part is raised to a predetermined height and held. Further, it is possible to avoid a situation in which the reaper does not touch the ground and cannot be opened sideways. In this case, when the mowing unit is driven up to a predetermined height by the elevating mechanism, the descent prevention mechanism is automatically in a blocking state.Therefore, the mowing unit is driven up by the elevating mechanism, and then the mowing unit is fixed so as not to descend. There is no need to perform such operations.

[II] According to the features of claim 2, similar to the case of claim 1, the "action" described in the above-mentioned [I] is provided, and in addition to this, the following "action" is provided. ing. Many harvesters, such as combine harvesters and rush harvesters for rice, have an operation unit and a harvester arranged side by side at the front of the fuselage. In this case, according to the features of claim 2, the vertical axis for opening the reaping unit to the side and operating the reaping unit is disposed near the front side of the body opposite to the driving unit. It is configured to be opened to the side opposite to the section.

According to a second aspect of the present invention, the reaping section is arranged near the front side of the body on the side opposite to the driving section, by disposing a vertical axis for operating the reaping section laterally. The front part of the fuselage can be greatly opened when the side is opened sideways.By opening the reaping section to the side opposite to the driving section, the reaping section does not interfere with the driving section. Can be opened to the side without any trouble.

[III] According to the feature of the third aspect, similar to the case of the first or second aspect, the "action" described in the above-mentioned [I] and [II] is provided. Has "action". The reaping and harvesting machine also drives the reaping unit to be largely raised by the elevating mechanism in a normal harvesting operation, for example, when turning at the end of the work site or when entering the work site from the road (when exiting the road from the work site). Sometimes.

According to the feature of the third 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 even if the mowing unit is driven upward by the lifting mechanism during the harvesting operation, as described above. Does not occur and the mowing part cannot be lowered.
As described in the preceding sections [I] and [II], when the reaper is opened sideways, the descent prevention mechanism may be set to the automatic state. Thus, when the mowing unit is driven up to the predetermined height by the elevating mechanism, the descent prevention mechanism is automatically in the blocking state, and the mowing unit cannot be lowered, and the mowing unit is opened sideways. Can be.

[IV] According to the feature of claim 4, as in any one of claims 1 to 3, the above [I]
To [III], in addition to the following “action”. In a reaper and harvester, a dustproof cover may be arranged above the reaper in order to prevent crop debris and dust from rising upward from the reaper during the harvesting operation. According to the fourth aspect of the present invention, since the dust cover is supported by the cutting unit, if the cutting unit is opened sideways, the dust cover is not left at the front part of the body, and the dust cover is placed on the side. Open operation.

[0011]

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 section 3 pushes the raising device 6, the clipper-type mowing device 7, the packer 8 for collecting the cut culm, and the 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 so 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 FIGS. 7 and 9, the hydraulic oil tank 14 is 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 to move up to a predetermined height (a position slightly lower than the upper limit), the mowing unit 3 is configured to be prevented from lowering 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 12 (a), 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 mowing clutch lever 42 is swingably supported around a horizontal axis P7 of a fixed portion of the operating portion 2, and the arm 4 of the mowing 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, near the bracket 14a of the hydraulic oil tank 14, an L-shaped operation arm 46 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 reaping 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, and the cutting clutch lever 4 is fixed.
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 the bank,
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 has been 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 comes into contact with the stem side of the grain stem from below, 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, and the stalks of the culm are cut from near the front part of the mowing part 3 and the feed chain 10. 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 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.

[0046]

According to the first aspect of the present invention, in the reaper supporting structure of the reaper, the reaper is opened sideways around the longitudinal axis with the reaper raised to a predetermined height and held. In such a case, the mowing unit can be opened sideways without hindrance even in a place where the machine sinks, for example, in a field, and the workability of the mowing and harvesting machine can be improved. In addition, the maintainability was improved. According to the first aspect of the present invention, when the mowing portion is driven up to a predetermined height by the lifting mechanism, the descent prevention mechanism is automatically in the blocking state and the mowing portion is held, so that the mowing portion is driven up by the lifting mechanism. After that, it is no longer necessary to perform an operation of fixing the reaper so as not to descend, so that the operability of the reaper can be improved.

According to the feature of the second aspect, the "effect of the invention" of the first aspect is provided similarly to the case of the first aspect. In addition to the "effect of the invention", the following "invention" is provided. Of the effect. According to the feature of claim 2, in the reaper and harvester in which the operating unit and the reaping unit are arranged side by side at the front part of the body, the operating unit defines a vertical axis for operating the reaping unit to open sideways. It is located near the opposite side of the front side of the fuselage, and the mowing part is opened to the side opposite to the driving part and operated so that the mowing part can be moved sideways without interference with the driving part. By opening, the front part of the machine body can be greatly opened, and the workability and maintainability of the reaper can be further improved.

According to the features of claim 3, claim 1 or 2
"Effects of the Invention" of Claim 1 or 2 as in the case of
In addition to this “effect of the invention”, the following “effect of the invention” is provided. According to the feature of the third aspect, even if the mowing unit is driven up to the predetermined height by the lifting mechanism, the lowering prevention mechanism can be operated in the stop state where the blocking state is not stopped. If the mowing part is largely driven up by the elevating mechanism when turning or when entering the work place from the road (going out of the work place on the road), the mowing part can be driven down without hindrance. The workability of the reaper could be further improved.

According to the feature of claim 4, the "effects of the invention" of the claims 1 to 3 are provided similarly to any one of the claims 1 to 3, and the "effects of the invention" are included in the "effects of the invention". In addition, it has the following "effects of the invention". According to the feature of claim 4, when the dustproof cover is arranged on the upper side of the cutting unit, if the cutting unit is opened to the side, the dustproof cover is also opened to the side together with the cutting unit. The front part can be largely opened, so that the workability and maintainability of the reaper can 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]

 2 Operating part 3 Cutting part 15, 16 Supporting mechanism 18 Elevating mechanism 24 Lowering prevention mechanism 35 Dustproof cover P1 Vertical axis

 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Kazutaka Oka 64 Ishizukita-cho, Sakai City, Osaka Prefecture Inside the Kubota Sakai Factory (72) Inventor Noboru 64 Ishizukita-cho, Sakai City, Osaka Prefecture Kubota Sakai Manufacturing Co., Ltd. Office (72) Inventor Yoshida Yusaku 64 Ishizukita-cho, Sakai City, Osaka Prefecture Inside Kubota Sakai Plant (72) Inventor Suezo 64, Ishizukita-machi Sakai City, Osaka Prefecture Kubota Sakai Plant (72) Invention Person Isamu Ase 64 Ishizu-Kitacho, Sakai City, Osaka Prefecture F-term in Kubota Sakai Works (reference) 2B076 AA03 BA08 BC05 CA02 CA03 CA06 CA08 2B382 GA03 GA09 GC03 GC04 GC21 GD02 HB02 HF02 HF06 HF07 HF22 HF32 MA16 MA24

Claims (4)

[Claims] A reaper is provided at a front portion of the body so as to be vertically movable by an elevating mechanism, and when the reaper is driven up to a predetermined height, the reaper is moved from the predetermined height of the reaper. A lowering prevention mechanism that is operated to a blocking state for preventing the lowering of the cutting unit; and a lowering prevention mechanism in which the cutting unit is driven up to a predetermined height. And a support mechanism for supporting the operably open side of the reaper. 2. An operation unit and a reaping unit are arranged side by side on a front part of the body, and an elevating mechanism capable of vertically driving the reaping unit is provided. When the reaping unit is driven up to a predetermined height, Along with this, a lowering prevention mechanism operated to a prevention state for preventing the cutting unit from lowering from the predetermined height, and a lowering prevention mechanism in which the cutting unit is driven to move up to a predetermined height, A harvesting and harvesting machine comprising a support mechanism for opening the cutting unit to the side opposite to the operation unit and operably supporting the cutting unit around a longitudinal axis near the front side of the fuselage opposite to the operation unit. Reaper support structure. 3. An automatic state in which the cutting unit is prevented from descending from the predetermined height when the cutting unit is driven up to a predetermined height, and the cutting unit is moved to a predetermined height. 3. The reaping part support structure of a reaper according to claim 1, wherein said lowering prevention mechanism is configured so as to be capable of being manually selected and operated to a stop state in which the stop state does not occur even when the rake harvester is driven up. 4. The reaping part support structure of a reaper according to claim 1, wherein a dust cover disposed above the reaping part is supported by the reaping part.