JPS58121713A - Mechanism for controlling reaming height in combine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides the above-mentioned reaping unit 1i1K, in which a reaping section is provided on a traveling vehicle body so as to be movable up and down by a hydraulic actuator.

In addition to installing a ground sensor that detects the entire height above the ground,
A spool of control pulp connected to the hydraulic actuator and the sensor are interlocked and connected via a machine linkage mechanism to constitute a cutting height control mechanism that automatically maintains the height of the cutting section above the ground within a certain range of KIk. and a manual operating tool is linked to the mechanical linkage mechanism via a flexibility mechanism that allows the mowing height control mechanism to raise and lower the control pulp, and - a. The control pulp can be raised or lowered by operation.
The present invention also relates to a mowing height control mechanism for a combine harvester configured to be freely operable.

In the above, there is a cutting height control type WAK, which is configured so that when there is a raised part in the opening KNM, the cutting part can be forcibly raised by operating beyond the flexible range. And conventionally, for example, 1
The above-mentioned flexibility can also be used when the cutting height is adjusted by manual lifting and lowering without using a sensor, such as when mowing in a direction perpendicular to the rows (so-called horizontal mowing) or in poor field conditions. The mower was raised and lowered by operating it over the ground.

However, when the operator is busy raising and lowering the reaping section, which relies only on manual operation, he has to operate an extra button within the flexible range.
The operating stroke is long, making it difficult to raise and lower the reaping section.

Based on the above points, the purpose of the IFi is to improve the manual operation of raising and lowering the reaping section with a small operation stroke.

Next, examples of the present invention will be described in detail based on illustrative drawings!・
do.

Pulling device +11, reaping device t l! l and conveyance device 1
3) consists of reaping aH (41, ft.
A threshing device (button and control section (7) f) that threshes the grain culms conveyed by K is driven by a single-acting hydraulic cylinder (8), which is an example of a hydraulic actuator, and is capable of vertically swinging. It is equipped with a combined harvester.

A support plug U is attached to the frame (9) of the reaping section (4).
tA1r was established! As shown in Figures 2 and 3, the mounting member 1, III) and the wire holder are attached to the support bracket and the mounting member 11.
11K ground contact type sensors F-11:1 are each connected to each other in a swingable manner.

Control pulp for the hydraulic cylinder (8) [
V) J-As shown in Figure @4, the valve body α4JK is provided with a spool U for raising the valve body and a spool for lowering the valve (111) so as to be able to be captured freely. A compression spring mounting member is attached to each of the cylinders (8) so that the cylinder (8) is held in the vertically stopped position IIK in the non-operating state.

The operation end for operating the spools d61 and Qei by contact is connected to the spindle Of4, and the spindle α- is connected to the spindle Of4.
The pulp M is rotatably provided on the frame 4 to which the pulp M is attached, and an interlocking bracket is rotatably attached to the end of the support shaft, and the interlocking bracket L and the Senna 01,
k is interlocked and connected via the release wire (2), and as the sensor IIs is oscillated up and down with respect to the mounting member 1ll), the control pulp M is operated to adjust the height of the reaping part (4) relative to the wharf as described above. Based on the height above the ground detected by sensor IIIK, machine #1 is configured to have a cutting height of 11J within the automatically set m range.

In the figure -, 1241Fi, mounting member ul, +o) K
N L, sensor (1, m, (11) is a tension spring that biases it to the downward direction @ dynamic displacement, and
- in the figure is when the sensor Os swings upward with respect to the mounting member 1111K and the release wire is loosened.
In order to rotate all of the operation pieces of IC1 to the upward operation side, the linkage bracket l is a tension spring.

The release wire linking bracket a! On the υ side, the receiver of the actuator wire (22m) pivotally connects the member to the operator (equipment) attached to the member so that it can swing freely around the horizontal axis, and the receiver is connected to the member @. By displacement operation, the mounting member 1 can be removed without operating the control pulp M.
ll) For K, sensor 1m, 01 is oscillating, sensor f-01, (11? 7) A high mowing group that protrudes downward more than the mil+, and a low mowing group that protrudes smaller than that. The switching mechanism is designed to change the set cutting height between the two states and the retracted state in which the mower is swung upward to a greater extent and hardly protrudes from the frame (9). .

The Acque wire receiver is provided with an angled plug 4 so as to be able to freely swing together with the member (to), and a spring mounting member to which the end of the tension spring 124 for the sensor αsK is attached is located between the angled plug and the spring mounting member attached to the end of the tension spring 124 for the sensor The swingable Vc pivot-connected U-shaped bracket is interlocked with the release wire, and the sensor (
The configuration is such that the downward biasing force applied to ll is not changed.

The support shaft am is supported by a frame via a boss member externally fitted on the support shaft so as to be relatively rotatable;
Throw a part of the lever repeatedly on one end side of the boss member (2),
A portion of the lever is interlocked and connected via a T-link with an elevation operating lever as a manual operation tool, and a plate body (goods) is attached to the other end of the boss member so that the image can rotate freely. As shown in FIG. 5, a recess for ball insertion is formed in the plate 6η, and a ball to be inserted into the recess is urged toward the insertion side by a compression spring in the frame. The fixing device 11GLII is configured so that when the boss member is rotated by the lever, it is fixed at a third position for automatic elevation control, which will be described later, by the biasing force of a spring force.

A pair of notched grooves, each having a predetermined width in the circumferential direction, are formed at the end of the boss member opposite to the lever portion, with the phases being different in the circumferential direction [180']. , Attach to the above-mentioned support shaft by attaching the bottle (b) to the notched groove circle, ←l
, and with the manual lift operation lever (to) fixed, the operation piece am is operated within a range that allows movement of the pin (6) within the width of the notch groove circle, I4υ. It has been matted.

Next, move the manual lift operation lever (to) from 1 to ! 4
The lines of action in the shapes sK located at the positions (P+>, (P+), (P, ), (P,), respectively, will be explained.

That is, as shown in FIG. 6 (a) K, the manual lifting lever is at the first position (Pl) where it is swung to one side the most.
, the support shaft ul t m is rotated by the contact of the post member (2) with the pin 4, and the spool t1 for lifting operation is
51, the reaping section 14) is forcibly raised regardless of the displacement of the sen. In the 2nd position '1it (Pa) with the reaping part +41 in an almost vertical position raised to the non-working area, the pin (2) is brought into contact with the side wall of the notch groove in the boss member -, and the sen? - Preventing the spindle 01 from rotating in the direction of operating the descending operation spool holder due to the downward swing of 〇m,
This is to maintain the raised state of the reaping section (4). or,
As shown in FIG. 6 (c), the manual lift control lever (to) the third position (Pa) is swung from the second position CP,) to the opposite side from the first position CP,). , the notch groove 11. (
4υ, within the permissible displacement range of the pin (B), operate both sprues (-) for lifting and lowering operations selectively to automatically bring the ground height of the reaping section (41) within the set range. In addition, as shown in Figure 6), move the manual lift control lever (to) to the 1st position m(P+).
4th place m1 (P,
), the reaping section 14) is lowered from the elevated state of the non-working area to the working area, and at the same time, the 'J! In, Senna-I
Even if it becomes a state IIK that raises the reaping part (4),
Regardless of the displacement of the sensor I, the mower ffN141 is forcibly lowered.

A coiled spring as an example of a biasing mechanism is interposed between the frame and a portion of the lever, and the lifting operation lever (to) is swung back to the second position It (P,) and its state is It is configured to maintain S. In addition, in the fixed state of the fixing mechanism @, while it is fixed at the third position CP, ) against the biasing force of the coiled spring due to its static frictional force, the fourth position M
When returning from (P,'), the configuration is such that it overcomes the dynamic friction force in the fixing mechanism - and is not fixed at the third position but returned at the second position lff.

As shown in FIG. 4, the lifting operation spool +151
, so that a ridged flow path as shown in FIGS. 6 and 7 is formed within a predetermined range in the flow path for communicating and connecting the pump boat (P) and the cylinder side boat (C). A tapered land is formed on the surface.

On the other hand, the lowering operation spool is provided with a valve body which opens and closes the flow path for communicating and connecting the cylinder side boat (0 and the tank boat ■) by contacting and pressing the spool. , within the predetermined movement range, Figure 6 and Figure 7.
As shown in the figure, small diameter communication holes 14η are formed so that a fringed flow path is formed. As mentioned above, due to the # pattern configuration on both spools 9a, @1 and 11
14th place f (PI), (in manual lifting and lowering operation by human power in Pa*, both the raising and lowering of the reaping part 14) are performed at high speed, and on the other hand, the building 3rd place lid (Pa)
In the automatically raised and lowered control mode in K, the notch grooves f41 and 11 are deviated to the rising side so that both the raising and lowering of the reaping 1jE (41) are performed at low speed, and in the automatic raising and lowering control mode l, the notch grooves f41 and 11 are If the sensor α detects a large rise, etc., and the sender 01 is displaced beyond the set value, the reaping section (4) will be driven upward at high speed only by the raising operation, and the reaping section (4) will reach the ground. It has been configured to ensure that collisions can be avoided.

The connecting bracket @mK is slidably provided with a connecting pin as an example of a connecting tool, and on the other hand, the linking bracket is attached to the lever part @4! A hole is provided to fit and lock at the 112 position (p*>), and by fitting and locking the bottle into the hole, the platen 11 and the lever part are directly connected, and the notch groove (
(B), (Foundation) K, in which there is no flexibility, both spools are 0.
A compression spring is attached to the connecting bin (c), and the linking bin (c) is configured such that the 6- can be operated by an elevating/lowering operating lever.
The coil spring Iυ is connected to the head portion of the connecting bottle, and the coil spring Iυ is biased so as to be displaced away from the lever portion. The end side and the angled grakut four! They are interlocked and connected via a release wire, and in the switching mechanism @l, the operation Aa? In conjunction with the operation of switching l from the cutting height setting position to the retracted position, the connecting bin i41 is switched to the connecting position sVc against the biasing force of the compression spring, the sensor Ql is switched to the retracted coarse position, and the connecting bin i41 is switched to the retracted coarse position. @None so that the switching to the connected state is performed all at once. At this time, even if the lift operation lever is not in the @2 position (P,), the coil spring 1
With connection flJK biased by 1, the tip of the bottle is in contact with a portion of the lever, and the operating lever is moved to @2 position CP.
,), the tongue will automatically fit into the hole.

Both spools u of the sensor ha control pulse M
It, the ninth operating piece 91% supporting shaft 11 that links @
Moan, linking bracket aυ and release wire (2) t
collectively referred to as a mechanical linkage mechanism.

In the above embodiment, a lift operation lever is directly connected to the mechanical linkage mechanism, and in the above embodiment, a part of the lever (a part of the lever), which is nine members linked to the lever, is connected to the linkage bracket a! For example, the operating lever is connected to υ.
directly linked Platan)! It may also be connected to 211.

In the above embodiment, when the sensor +11 is switched to the retracted position, the connecting bottle control is automatically operated, and the mechanical linkage mechanism for the linkage lever part - and the sensor 01 is connected to the operation lever (to). However, according to the present invention, the d1 connecting pin may be manually operated to switch between the connected state and the disconnected state.

The mechanical linkage mechanism and the manual lifting/lowering operation lever are linked with each other within a predetermined range of flexibility, and the structure is not limited to the above-mentioned notch grooves, cages, and bottles, but also bosses, etc. The frictional resistance in the direction of relative rotation between the member υ and the support shaft a is varied in a predetermined phase, allowing relative rotation within a predetermined range, setting it as a flexible range, and exceeding it. Under good conditions, various structural modifications are possible, such as the KJII configuration, which allows the wheels to rotate integrally without relative rotation due to frictional resistance.
These are collectively referred to as the Interchange Organization, i42.

In summary, the present invention, in the above-mentioned cutting height control mechanism for a combine harvester, connects the member linked to the manual operating tool (Inc.) or the shaft and the coupling tool that directly connects the mechanical linkage mechanism. It is characterized by being provided so that it can be freely disconnected and disconnected.

In other words, in the automatic cutting height control state, the flexibility mechanism 1 is more likely to operate the manual operating tool beyond the range of flexibility, and artificially cut when there is a localized protrusion. Although it is possible to raise and lower the reaping section (14) to a strong 111J#l, and when traveling on headlands etc., it is possible to raise and lower the reaping section (111411). When lifting or lowering, connect the manual operating tool or the linkage member (goods) to the mechanical linkage mechanism.

The control pulp (v)t- can be operated in a flexible state, and the reaping part (4) can be raised and lowered with a small operation stroke,
It is now possible to move the reaping section (4) easily and efficiently by raising and lowering it only manually.

[Brief explanation of the drawing]

The drawings show an embodiment of the cutting height control mechanism of the machine according to the present invention, and FIG. 1 is a partially omitted side view of the machine, FIG. 2 is a side view of the IL section showing the sensor, and FIG. 3 is a side view of the machine. FIG. 2 is a perspective view showing a cutting height control mechanism. Fig. 4 is a sectional view of part 11 in Fig. 3, Fig. 5 is a partially expanded sectional view along the marma line in Fig. 3, an explanatory diagram showing the operating state of the M-th rep, and Fig. 7 is a hydraulic circuit diagram. . (4)...Reaping section, (8)...Hydraulic actuator, 01...Sensor, a---...
...Pulp spool, ■...Mowing height control mechanism, -...Linkage member, -...Manual operating tool,
1411 (4a...accommodation mechanism, goose...
Connector. M...Control pulp. Representative Patent Attorney Osamu Shimura.

Claims (1)

[Scope of Claims] A reaping section (4) is installed in the traveling vehicle body so that it can be raised and lowered by a hydraulic actuator (S). Actuator tel [!t Control pulp M spool -, 0- and the sensor +111
! : are interlocked and connected via a mechanical linkage mechanism to reap the above-mentioned reaping 1.
configuring a cutting height control mechanism @ that automatically maintains the height above the ground of m (4) within a set range, # to the mechanical linkage mechanism;
By the cutting height control mechanism (2)! A flexible mechanism (foundation) that allows the lifting and lowering operation of the control pulp M (6) is linked with a manual operation tool, and the control pulp is operated beyond the flexible range by the flexible mechanism (6). This is a cutting height control mechanism for a combine harvester, in which the lock can be raised and lowered, and the mowing height control mechanism for a combine harvester is configured such that the lock can be raised or lowered. A cutting height control mechanism for a combine harvester, which is provided with the ability to freely operate the disconnection operation.