JP2504085Y2 - Combine steering device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a combine steering device.

(B) Conventional technology Conventionally, a combine steering device has an operation arm that sequentially operates each side clutch device and each side brake device of the left and right traveling parts, which is interlockingly connected to a steering operation lever by an interlocking wire or the like. By operating the lever, the side clutch device of the left and right traveling parts is disengaged and the brake of the brake device is braked to operate and stop each traveling part so that the aircraft can be steered. ing.

(C) Problems to be solved by the invention However, in the above steering device, only the disengagement operation of the clutch device is performed, and the braking operation of the brake device is not performed. It was difficult to operate, and contrary to the wishes of the operator, the brakes were applied immediately after the clutch was disengaged, causing the aircraft to make sharp turns.

(D) Means for Solving the Problems In the present invention, therefore, the pair of side clutch devices and side brake devices provided on the left and right traveling parts respectively are provided with an operation tool for steering the machine to operate the clutch / brake. In a combine in which the side clutch device and the side brake device can be sequentially operated by the same operation tool by interlocking connection through a mechanism, a mowing device elevating operation support shaft extending in the left-right width direction is pivotally mounted on the operating part. , A boss is attached to the support shaft, and the side clutch / brake operation support shaft is rotatably pivoted to the boss in a state orthogonal to the above-mentioned harvesting device lifting operation support shaft. , The lower end of one operation lever as an operation tool is attached via a lever stay, and the operation lever raising / lowering operation of the operation lever is performed in the forward / backward rotation around the support shaft. The vertical movement of the mowing device via the structure is interlocked, and the side clutch device and the side brake via the clutch / brake actuation mechanism are used for the left / right turning operation of the operating lever around the side clutch / brake operation support shaft. By interlocking each operation of the device, the operation of one of the up and down movements of the reaping device and the turning operation of either the left or right of the left and right traveling parts can be performed at the same time by rotating one operating lever in an oblique direction. The present invention provides a steering apparatus for a combine, which is characterized in that

(E) Action / Effect According to the present invention, the following action / effect is produced.

That is, according to the present invention, the reaping device can be moved up and down by rotating one operating lever in the front-rear direction, while the body can be operated by rotating in the left-right width direction. By rotating the operating lever to the left rear, for example, the reaping device can be lifted and the machine can be swung to the left. In addition, it can be reliably performed, operability can be improved, and erroneous operation can be reliably prevented.

(F) Embodiments An embodiment of the present invention will be described in detail with reference to the drawings. (A) shown in FIGS. 1 and 2 is a combine, and a mowing device (2) is provided in front of the left side of the machine (1). It is mounted so that it can be moved up and down.

Then, this machine (1) is harvested by the harvesting device (2) and transported through the transport mechanism (4) to the left front part on the crawler type left and right traveling parts (3) and (3). A threshing / sorting unit (5) for threshing and sorting the rod is provided, and an straw processing unit (6) for treating straw is provided behind the threshing / sorting unit (5), and the right front part is provided. The operation unit (7) is provided adjacent to the transport mechanism (4), and the paddy storage unit (8) for storing the selected paddy behind the operation unit (7) is used as the threshing / sorting unit (5). Adjacent to each other.
(38) is a mowing device lifting cylinder for moving the mowing device (2) up and down.

Further, as shown in FIG. 1 to FIG. 3, the operation part (7) has a front operation column (10) standing upright on the front part of the floor surface (9), and from the right side of the upper surface of the column (10). One operation lever (11) as an operation tool is projected and the same operation lever (11)
Thus, the up / down operation of the mowing device (2), the clutch disengagement operation operation and the brake braking operation of the left / right traveling portions (3) and (3) can be performed via the interlocking mechanism (21). .

Further, (14) and (14 ') shown in FIGS. 1 to 3 are assist bars, which are usually fixed by fixing bolts (not shown). Then, if the fixing by the fixing bolt is released, it can function as a left and right steering operation lever. That is, the assist bar (14) (1) is replaced with the clutch disengagement operation operation and the brake braking operation of the left and right traveling parts (3) (3) by the operation lever (11).
4 ') makes it possible to perform these operations.
At this time, the operation lever (11) only performs the vertical lifting operation of the reaping device (2).

In addition, on the left side of the floor surface (9) of the operating unit (7), the first
As shown in FIG. 2, FIG. 4, FIG. 5 and FIG. 5, the side operation column (15) is erected, and the accelerator lever (17) and the main transmission lever are arranged from the upper surface of the column (15). (18)
And threshing clutch lever (19) and auxiliary gear shift lever (20)
And are projected so that each lever can be operated.

Next, the interlocking mechanism (21) described above will be described with reference to FIGS. 3 to 9.

That is, the interlocking mechanism (21) includes the side operation column (1
The left side wall (10b) of the front operation column (10) is made to penetrate between the left side wall (15b) of 5) and the right side wall (10a) of the front operation column (10), and the mowing device lifting operation support shaft (22 ) Is mounted on the support shaft (22), and the boss portion (23) is fitted to the right side portion of the support shaft (22), and the boss portion (23) is fixed with a fixing bolt (26). The rear end portion (24a) of the side clutch / brake operation support shaft (24) is rotatably pivoted in a state orthogonal to the above-mentioned harvesting device lifting operation support shaft (22) at the lower part thereof. (24) The lower end of the lever stay (25) is fixed to the middle part of the stay (25), and the stay (25) is raised right above the rising part (25a) and the rising part (25a).
Horizontal extension (25b) extending horizontally from the upper edge of
And the lower end of the operating lever (11) is fixed to the upper surface of the horizontal extension portion (25b).

As described above, the operation lever (11) can be rotated in the front-rear direction about the mowing device elevating / lowering operation support shaft (22), and by such a forward / backward rotating operation, the mowing device elevating mechanism (27) is used for mowing. The device (2) can be moved up and down. Moreover, the operation lever (11) can be rotated in the left and right directions around the side clutch / brake operation support shaft (24), and the clutch / brake actuation mechanism (27 ') can be operated by the left / right rotation operation. Via left and right running part (3)
The clutch disengagement operation operation and the brake braking operation of (3) can be performed.

As shown in FIGS. 3 and 5, the mowing device elevating mechanism (27) attaches the lower end of the operating arm (28) to the boss (22 ') at the left end of the mowing device elevating operation support shaft (22). ), The upper end of the arm (28) is extended rearward and upward, and the front end of the interlocking rod (29) is interlockingly connected to the upper end of the arm (28) by the first interlocking pin (30). Extend the rear end of the interlocking rod (29) to the rear, and connect the interlocking rod (29).
At the rear end, the upper end of the spool operating pivot arm (33) whose lower end is interlocked with the spool (32a) of the hydraulic valve (32) for controlling the hydraulic pump (31) for raising and lowering the reaper,
It is interlockingly connected by the second connecting pin (34). (35) is a stay that pivotally supports the middle part of the spool actuating pivot arm (33) so that it can pivot back and forth, and (36) is a pivot pin.
The connecting hole (33a) is provided at the lower end of the rotating arm (33) for spool operation by projecting (37) by the spool (32a).
It is a connecting projection inserted in the inside. Further, the harvesting device lifting cylinder (38) is connected to the hydraulic pump (31) through a hydraulic pipe.

Therefore, when the operating lever (11) is operated back and forth, the harvesting device lifting mechanism (27) operates the hydraulic pump (31) for lifting the harvesting device via the hydraulic valve (32),
The hydraulic pump (31) is used to raise and lower the reaper unit cylinder (38).
Expands and contracts to raise and lower the mowing device (2).

Further, in the side operation column (15), a lift lock device (39) for locking the lift operation of the reaping device (2) is provided.

That is, the lifting lock device (39) is shown in FIGS.
As shown in the figure, the lower end (40a) of the mowing device lifting lock rod (40) is attached to the upper end of the spool operating pivot arm (33) of the mowing device lifting mechanism (27), The upper end (40b) of the side wall 40 is extended to a position near the back surface of the ceiling wall (15a) of the side operation column (15), and the upper end (40b) of the rod (40) is attached to the back surface of the ceiling wall (15a). By locking the rod (40) by engaging the lock body (41) attached to the device, the operation lifting lock (27) of the device can be locked.

Also, as shown in FIGS. 5 and 6, the lock body (41) has a front end portion (41a) in plan view at the lower end of a support shaft (42) vertically provided on the back surface of the ceiling wall (15a). It is attached so that it can be rotated left and right, and a turning operation pin (43) is provided on the rear end (41b) so as to project upward, and the upper end (43a) of the turning operation pin (43) is attached to the ceiling wall (15a). It is inserted into the arc-shaped guide hole (15'a) provided in the above and protruded to the outside, and the operation knob (44) is screwed to the upper end portion (43a) of the same so that it can be tightened and adjusted. 44)
The lock body (41) can be rotationally fixed by adjusting the pressure so that it is pressed against the surface of the ceiling wall (15a), or by loosening the knob (44). It is also designed so that it can be rotated left and right.

Then, on the left side of the lock body (41), there is a lowering lock engaging concave portion (41c) for locking the mowing device (2) in a lowered state, and a state in which the mowing device (2) is raised. A locking lock engaging recess (41d) for locking is provided, and the upper end (40b) of the mowing device lifting lock rod (40) is engaged with one of the engaging recesses (41c) (41d). The operation lock of the rod (40) can be performed.

In addition, a stopper body (45) is provided at the upper left corner of the side operation column (15), and the stopper body (45) allows the upper end (40
(b) prevents the lock body (41) from being bent to the left when the lock body (41) is engaged, so that the lock body (41) can be reliably engaged.

According to such a lifting lock device (39), the lock body (41) is pivoted left and right by pinching the operating knob (44), and the lock recess (41) is engaged in the upward or downward locking engagement recess ( By engaging the upper end (40b) of the rod (40) for raising and lowering the harvesting device with the rods (4c) (41d) (41d).
It is possible to lock the operation of 0) and hold the mowing device (2) in the lowered position or the raised position.

Also, the above-mentioned clutch / brake actuating mechanism (27 ')
As shown in FIG. 7, the mowing device lifting operation support shaft (22)
A switch box (46) is attached to the boss (23) provided on the, and the hydraulic mechanism (70) is connected to the box (46).

Then, in the switch box (46), the base end of the contact terminal (46e) connected to the battery (B) is attached to the side clutch / brake operation support shaft (24), and the support shaft (2
4) A fixed angle between the left and right clutch operation contact terminals (46a) (46b) that are energized by the tip of the contact terminal (46e) in contact with the fixed angle rotation operation of the support shaft (24). The left and right brake actuating contact terminals (46c) and (46d) are provided to which the tip of the contact terminal (46e) comes into contact and is energized in conjunction with the turning operation in the vicinity of the maximum deflection angle.

Then, the contact terminals (46a) (46b) for operating the left and right clutches
Is a cylinder for operating the left and right clutches of the hydraulic mechanism (70) (4
7) Clutch actuating solenoid valve (4 ')
8), and contact terminals (46c) for left and right brake actuation
(46d) is connected to a brake actuation electromagnetic valve (50) that controls the left and right brake actuation cylinders (49) (49 ') of the hydraulic mechanism (70).

Moreover, the side lever / brake operation support shaft (24) is operated by rotating the operation lever (11) in one of the left and right directions.
When is rotated, the contact terminal (46
By means of e), the clutch operating contact terminal (46a) or (46b) on the rotating side of the operating lever (11) is energized, and the clutch operating cylinder (47) is passed through the clutch operating electromagnetic valve (48). Or, by operating (47 '), one of the left and right side clutch devices described later can be disengaged,
Further, when the operation lever (11) is largely rotated to the vicinity of the maximum deflection angle of the constant angle to rotate the support shaft (24), the operation lever (11) is moved by the contact terminal (46e). ) Brake operation contact terminal (46)
c) or (46d) is also energized, and the brake operating cylinder (49) or (4) is passed through the brake operating electromagnetic valve (50).
By operating 9 '), one of the left and right side brake devices described later can be braked.

Further, the hydraulic mechanism (70) is provided with a variable relief valve (51) for adjusting the brake pressure of the left and right brake actuating cylinders (49) (49 '), and (P) is a hydraulic pump,
(T) indicates a hydraulic tank.

Further, the left and right clutch operating cylinders (47) (4
7 ') and left and right brake actuation cylinders (49) (49')
As shown in FIGS. 8 and 9, the left and right running parts (3) are
The cylinder (47) (47 ') (49) is mounted on the upper part of the front wall of the mission case (52) installed between the drive wheels (3a) and (3a) of (3) via the support case (53). The lower end of (49 ') has an interlocking connector (60) with adjustable length.
Connect the upper ends of (60 ') (61) (61') to the connecting bolts (62) (6
2 '), and the same interlocking connection body (60) (60') (6
1) Left and right clutch / brake operation at the lower end of the front wall of the case (52) to operate the left and right side clutch devices and left and right side brake devices built into the mission case (52) at the lower end of (61 ') Arm (63) (63 ')
Is linked to the tip of the.

Moreover, the base end of the left clutch / brake actuating arm (63) is attached to the left actuating shaft (64) linked to the left side clutch device and the left side brake device, and the arm (6
3) The left interlocking connecting pin (65) is projected forward from the tip of 3), and the pin (65) is connected to the left clutch operating cylinder (47).
And the vertical brake holes (66) (6) provided at the lower end of the interlocking connection body (60) (61) interlockingly connected to the left brake actuation cylinder (49).
7) It is vertically slidably inserted and connected.

Similarly, the right clutch / brake actuating arm (6
The base end of 3 ') is attached to the right actuating shaft (64') interlockingly connected to the right side clutch device and the right side brake device,
Right interlocking connecting pin (6
5 ') and project the pin (65') to the right clutch operating cylinder (47 ') and right brake operating cylinder (4').
9 ') are interlockingly connected to each other, and are vertically slidably inserted in the vertically elongated holes (66') (67 ') provided at the lower end of the interlocking connecting bodies (60') (61 ') to be connected.

The left and right brake actuating cylinders (49) (49 ')
Stroke, that is, the extension / contraction length is slightly longer than the extension / contraction length of the left / right clutch operating cylinders (47) (47 ′), and is linked to the extension / contraction operation of the left / right clutch operating cylinders (47) (47 ′). The left and right clutch / brake actuating arms (63) (63 ') are turned up and down to intermittently actuate the left and right clutch devices, and interlock with the expansion and contraction of the left and right brake actuating cylinders (49) (49'). Then, the left and right clutch / brake actuating arms (63, 63 ') are pivotally moved further upward or downward, so that the left and right brake devices can be braked.

At this time, the left and right clutch operating cylinders (47) (47 ')
Cylinders (49) (4
The expansion / contraction operation of 9 ') is performed by the vertical holes (66) (66') (67) (6
7 ') prevents mutual interference.

Further, in FIG. 3, FIG. 8, and FIG. 9, (68) (6
Reference numeral 8 ') is an interlocking connecting wire for interlockingly connecting the left and right steering operation levers (14) (14') and the left and right clutch / brake actuating arms (63) (63 ').

Further, the variable relief valve (51) is provided on the upper portion of the support case (53), and the base end of the relief valve adjusting arm (51a) is attached to the relief valve (51) by a rotary support shaft (51'a). The lever stay (25) rises up (25a) in the middle of the side clutch / brake operation support shaft (24) and the tip of the lily valve adjusting arm (51a). Between the tips of the brake pressure variable arms (54, 54 ') protruding further to the left and right sides, the interlocking wire (5
5) (55 ') is interposed and in proportion to the pulling degree of the interlocking wires (55) (55') by the left and right operation of the operation lever (11) centering on the support shaft (24). Via the variable relief valve (51), the left and right brake actuating cylinders (49) (4
The hydraulic pressure in 9 ') is increased so that the brake pressure can be increased.

In addition, the interlocking wires (55) (55 ') have a long hole (55
a) (55'a) is provided, and the same long hole (55a) (55'a)
Connecting pins (54a) (54'a) provided at the tip of each brake pressure variable arm (54) (54 ') are slidably inserted therein, and when the operating lever (11) is rotated left and right, Only one of the interlocking wires (55) (55 ') is pulled. Also, (51b) is a relief valve adjustment arm (5
It is a connecting pin that projects from 1a) and connects the tips of the interlocking wires (55) (55 ').

In addition, a positioning spring (56) is wound around the front end of the side clutch / brake operation support shaft (24).
One end (56a) of 6) is connected to a spring connecting part (25c) extending downward from the lever stay (25), and the spring (5a)
The other end (56b) of 6) is connected to the tip of a connecting bracket (57) whose base end is attached to the mowing device lifting operation support shaft (22), and the elastic restoring force of the spring (56) connects the operation lever ( The side clutch / brake operation support shaft (24) is rotationally biased to hold 11) in a neutral position where it is vertically erected.

Further, the horizontal extension portion (25b) of the lever stay (25) is provided with a temporary fastening device (58), and the temporary fastening device (58) is
A temporary fixing tubular body (58a) is attached to the center of the horizontal extension portion (25b) in a vertically penetrating state, and the temporary fixing ball (58b) is housed in the tubular body (58a) so as to be slidable in the vertical direction. 58b) and a spring receiver (58c) provided at the upper end of the same cylinder (58a)
A spring (58d) is interposed between and, and the ball (58b) is temporarily fixed by the spring (58d) to a tubular body (58a).
It is urged to a part of the outside from the lower end opening.

The upper surface (23a) of the boss portion (23) is formed in an upwardly convex arcuate surface so that when the operation lever (11) is rotated left and right, the temporary fixing ball (23a) is held on the upper surface (23a). 58b) is configured to roll, and a temporary stop recess (23b) to which the ball (58b) is fitted and locked is provided at the center of the upper surface (23a), and the operation lever (11) is temporarily set to the neutral position. It can be stopped and held.

In this embodiment, the operation lever (11) is used as the operation tool.
However, the side clutch / brake operation support shaft (24) may be configured to be rotated by using the button switch or the like.

The embodiment of the present invention is configured as described above, and according to this embodiment, the following operational effects are produced.

That is, in the present embodiment, since it is configured as described above, by operating the operation lever (11), either the left or right clutch operating cylinder (47) or (4
7 ') and the brake actuating cylinder (49) or (49') are actuated respectively, and the cylinder (47) (49) or (4)
7 ') Rotate the clutch / brake actuating arm (63) or (63') interlockingly connected to (49 ') to sequentially disengage the side clutch device, and then brake the side brake device. You can

At this time, the clutch operating cylinders (47) (47 ')
Simply rotate the clutch / brake actuating arms (63) (63 ') to disengage the side clutch device.
The side brake device is not braked by the cylinder (47) (47 '), and the side brake device is braked by the brake actuation cylinder (49) (4).
9 ') Clutch / brake actuating arm (63) (6
Since it can be performed only by turning operation of 3 '), it is possible to easily operate the aircraft gently by disengaging only one of the side clutch devices, and reliably prevent erroneous operation. You can

[Brief description of drawings]

FIG. 1 is a side view of a combine having a combine steering device according to the present invention. FIG. 2 is a plan view of the combine. FIG. 3 is a partially cutaway front view of the main part. FIG. 4 is a side sectional view of the main part. FIG. 5 is a partially cutaway side view of the main part. FIG. 6 is a plan view of the side operation column. FIG. 7 is an explanatory view of a clutch / brake actuating mechanism. FIG. 8 is a side view of the brake operating cylinder. FIG. 9 is a plan view of the same. (A): Combine (1): This machine (2): Harvester (11): Operating lever

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Satoshi Kasyu 1-32, Chayamachi, Kita-ku, Osaka City, Osaka Prefecture Yanmar Agricultural Machinery Co., Ltd. (56) Reference JP-A-62-265904 (JP, A) Actual Kai 62-130435 (JP, U)

Claims (1)

(57) [Scope of utility model registration request] 1. A clutch / brake actuating mechanism (27 ') for a pair of side clutch devices and side brake devices provided on the left and right traveling parts (3) and (3) respectively, and an operating tool for steering the machine. In a combine in which the side clutch device and the side brake device can be sequentially operated by the same operation tool via the operation tool, the harvesting device elevating operation support shaft (22 ) Is mounted on the support shaft (22), and the boss (23) is attached to the support shaft (22). The side clutch / brake operation support shaft (24) is attached to the boss (23) as the harvester lifting operation support shaft (22). It is pivotally supported in an orthogonal state, and the lower end of one operation lever (11) as an operation tool is attached to the side clutch / brake operation support shaft (24) via a lever stay (25). Shaft raising and lowering operation support shaft of the operation lever (11) 22) to the back-and-forth rotation operation around the, in conjunction with the vertical lifting operation of the apparatus cutting through the cutting device lifting mechanism (27) (2), and,
The left / right rotation of the operating lever (11) around the side clutch / brake operation support shaft (24) is linked to each operation of the side clutch device and side brake device via the clutch / brake actuating mechanism (27 ′). Then, by turning the single operation lever (11) in the diagonal direction,
The operation of the combine, wherein the operation of either one of the up and down movements of the reaping device (2) and the turning operation of either one of the left and right traveling parts (3) and (3) can be performed at the same time. Device.