JPS6041048Y2 - mobile agricultural machinery - Google Patents

Description

[Detailed explanation of the invention] In mobile agricultural machines in which ground-based work equipment is connected to the main machine, the work equipment is generally not only able to move up and down with respect to the main machine, but also horizontally and horizontally relative to the main machine. There are also things that can move freely in any direction.

For example, if the working equipment is configured to be able to move horizontally to the left and right with respect to the machine, when working on the ground in a curved field, the working equipment can be moved along the curved line while the machine moves straight. Or, - Even if the turning radius is large when turning after the completion of a stroke and moving to the next stroke in the opposite direction, the next stroke work can be started from a predetermined position by moving the working device laterally, making the operation easier. In addition, the degree of freedom of work can be improved.

In this way, the present invention allows the working device to be freely driven and moved in two-dimensional directions, horizontally and vertically, with respect to the machine, and in order to simplify the operability, the working device can be moved in two-dimensional directions. The work commands for the two drive devices for the purpose of the movement can be selected by operating and moving one lever in each operating direction, which is operated along two types of operating movement paths in mutually intersecting directions. In agricultural machinery, when the working device is moved from one side in the horizontal direction to the vertical direction, which is a direction that intersects with this direction, problems such as loss of balance of the entire machine body can be automatically prevented. In order to avoid this, we aim to realize this through a rational structure.

In order to avoid the above-mentioned inconvenience, a member that is interlocked with the drive movement of the working device in the horizontal direction is provided, and a member is provided between the interlocking member and the lever so that the working device can be moved in one of the left and right directions. Operationally guides the operational movement of the lever of this machine toward the lifting side of the working device to the side opposite to the side on which the working device is moving, and drives the working device of this machine toward the center in the left-right direction based on the operation. Therefore, it would be possible to provide an operation linkage mechanism that automatically returns the lever to the neutral position of the operation path for moving the working device left and right through the interlocking member, but if such a configuration is adopted, In this case, the following problems arise.

That is, the above-mentioned automatic neutral position return action becomes more important as the working device approaches the end of the horizontal movement stroke. Therefore, the interlocking member When reaching the end of the lever, it must be moved to an appropriate position to guide the operation to the opposite side, but this interlocking member and the working device must be directly interlocked. When the working device is at a position halfway to the end of the moving stroke, and the closer this position is to the center position, the more likely the interlocking member will be deviated from the appropriate position and the automatic return action to the desired neutral position will be prevented. I can't accomplish it.

In view of this problem, the present invention provides an appropriate method for guiding the interlocking member to operate the lever in the opposite direction when the amount of movement of the working device from the center position along the left-right direction is relatively small. The above-mentioned problem is solved by configuring the interlocking member to be moved to the appropriate position and to be stopped at the appropriate position regardless of further movement of the working device.

First, embodiments of the present invention will be described below based on the drawings.

FIGS. 1 and 2 schematically show a side view and a plan view of a mobile agricultural machine.

This mobile agricultural machine consists of a main machine 1 equipped with a traveling device and a working device 2.
Between the working device 2 and this machine 1, there is a
A driving device 3 for driving and moving the working device 2 in the horizontal and horizontal directions with respect to the main machine 1, and a driving device 4 for driving and moving the working device 2 up and down in the vertical direction with respect to the main machine 1 are provided. There is.

Both drive devices 3 and 4 are equipped with hydraulic cylinders 5 and 6 connected to hydraulic pumps P, respectively, and valves 7 and 8 interposed in their respective hydraulic circuits are connected to a common lever 9 by an appropriate linkage mechanism. 10.11.

Reference numeral 12 denotes an operation guide plate for the lever 9, which has a square-shaped guide groove 12a that guides the lever 9 in two-dimensional directions.

R and L indicate operating positions for moving the working device 2 to the right and left, and U and D indicate operating positions for moving it upward and downward.

N, N is the neutral operating position. 13 is a U of the guide groove 12a in conjunction with the lateral movement of the working device 2 to the left or right.
This is an interlocking member for guiding the lever that moves the position to the R side or the L side, and this interlocking member 13 has a trapezoidal notch 13 that engages the lever 9 when the lever 9 is moved from the D side to the U side.
a is formed.

Between this interlocking member 13 and the drive device 3 for lateral movement of the working device 2, there is a mechanism B that moves the interlocking member 13 in an interlocking manner only when the working device 2 is driven to move within a certain range within the lateral movement range.
is provided.

This interlocking movement mechanism B has a release wire 14 and a spring 15 as main elements.

That is, among the first and second sliding members 16 and 17 loosely fitted to the piston rod of the cylinder 5 in the drive device 3, the second sliding member 17 and the interlocking member 13 on the side farthest from the cylinder body , both ends of the inner wire 14a are fixed respectively, both ends of the outer wire 14b are fixed respectively to the first sliding member 16 and the guide plate 12, and the interlocking member 13 and the guide plate 12 are fixed respectively.
A first tension spring 15a is placed between the first sliding member 16 and the cylinder body, and a second compression spring 15 is placed between the first sliding member 16 and the cylinder body.
A third compression spring 15c is interposed between the first and second sliding members 16 and 17, respectively.

18 is a stopper fixed to the piston rod.

≦Two springs 15a, 15b* The strength of 15c is 15a<15c<15b, and when the cylinder piston is in the neutral position, the interlocking member 13 is set so that its notch 13a is in the neutral position N at U. .

Note that when the piston is in the neutral position, the second compression spring 15b is in a substantially free state.

When the lever 9 is operated from D to the R side, the valve 7 is switched to the forward flow direction, the cylinder 5 is contracted, and the working device 2 is moved laterally to the right.

Along with this, the stopper 18 moves the second sliding member 17 against the spring 15c.

However, the first sliding member 16 does not move due to the strong spring 15b.

Therefore, the inner wire 14a becomes loose with respect to the outer wire 14b, and the spring 15a causes the interlocking member 13 to
is moved to the L side at U.

This movement continues only until the spring 15c is sufficiently compressed and the second sliding member 17 follows the first sliding member 16, ie within the stroke 11.

When the normal flow state of the valve 7 is further continued, the working device 2 further moves laterally to the right, and this time both the sliding members 16 and 17 move together, so the inner wire 14a does not loosen, and therefore the interlocking member 13 does not move.

In other words, it does not move within the range of stroke I2.

When the working device 2 reaches the desired position for rightward lateral movement, the lever 9 is operated from D to N, the valve 7 is closed, and the lateral movement of the working device 2 is stopped.

In this state, move the lever 9 to D or N to raise the working device 2.
When the lever 9 is operated from the U side to the U side, the lever 9 is automatically guided to the U L position by the notch 13a of the interlocking member 13 that is at the U L position.

Then, the valve 8 is switched to the forward flow direction and the valve 7 is switched to the reverse flow direction, so that the working device 2 rises from the lower right lateral deviation position and returns to the center position in the left-right direction.

Both sliding members 16 and 17 are then moved apart by the spring 15c, the inner wire 14a is tensed, and the interlocking member 13 is moved to the neutral position N against the spring 15a.

At this time, the lever 9 engaged with the notch 13a is also moved, so the valve 7 is closed and the working device 2 is stopped at the center position in the left-right direction.

Operate the lever 9 from the N side to the L side at D to remove the working device 2.
When the spring 15b is moved laterally to the left, the spring 15b is almost free, so the second sliding member 17 moves the spring 1
5c to move away from the first sliding member 16,
The inner wire 14a is tensed and the interlocking member 13 is
Move to the R side.

When the notch 13a comes to the R of U, the spring 15c is set to be free, so that the interlocking member 13 does not move even if the working device 2 is further moved laterally to the left.

If the lever 9 is operated to the U side in order to raise the work device 2 from a state in which it is moving laterally to the left, the - lever 9 is moved to the U side.
The working device 2 is guided to the R of U by the notch 13a at the R of the U, and the working device 2 is automatically returned from the left offset position to the center position while rising.

In the present invention, when the lever 9 is operated from D to U with the working device 2 moved laterally to the left or right as described above, the lever 9 is guided to the L or R of U, and the lever 9 is moved to the neutral position. In order to automatically return to position N, the interlocking member 13 and lever 9
The mechanism established between the two is called the operation linkage mechanism A.

As shown in FIG. 4, the interlocking movement mechanism B is interlocked with a device 3A interlocking with the hydraulic cylinder 5, which is installed approximately parallel to the hydraulic cylinder 5 and across the machine 1 and the working device 2. May be connected.

In summary, the mobile agricultural machine according to the present invention is provided with two drive devices for driving and moving the working device in two directions, left and right and up and down relative to the machine, and the operation commands for these two drive devices are transmitted in a manner that crosses each other. The lever is configured to be selectable by operation movement in each operation direction of one lever operated along two types of operation movement paths in the direction, and the lever is connected to a member that is interlocked with the drive movement of the working device in the left and right direction. In between, when the working device is moving left or right, the operating movement of the lever to the working device raising side is controlled by moving the operating guide to the side opposite to the side where the working device is moving. An operation linkage mechanism that automatically returns the lever to a neutral position of an operation movement path for the left-right movement operation of the work device via the interlocking member by drive movement of the work device to the center in the left-right direction based on the operation. In the mobile agricultural machine, there is a space between a drive device for driving the work device in the left-right direction or a device interlocked with the drive device and the interlocking member, within the drive movement range of the work device in the left-right direction. The working device 2 is characterized by being provided with a mechanism for interlockingly moving the members only during drive movement within a certain range.
When the amount of movement in the left-right direction is relatively small, the interlocking member 13
can be moved to an appropriate position for operating and guiding the lever 9 to the opposite side, and the interlocking member 13 can remain in the appropriate position regardless of further movement of the working device 2. ＼Since it can be stopped, the operation stroke can be made small to make it easy to operate, and the work device 2 can be moved from the center position in these left and right directions while intersecting with this direction. When the working device 2 is moved in the horizontal direction, the automatic return action for the working device 2 to the center position in the horizontal direction is controlled so that the working device 2 in the horizontal direction
It has now been possible to perform the desired operation reliably and well over a large range of movement.

[Brief explanation of drawings]

The drawings show an embodiment of the mobile agricultural machine according to the present invention, in which Fig. 1 is a schematic side view, Fig. 2 is a plan view showing the operating system, Fig. 3 is a partially cutaway plan view of main parts, and Fig. 4 is a schematic side view. FIG. 7 is a partial plan view of another embodiment. 1... This machine, 2... Working equipment, 3, 4
...Opening drive device, 3A...Interlocking device, 9...
...Lever, 13...Interlocking member, 14...
... Release wire, 15, song, spring, A...
...Operation linkage mechanism, B...Linkage movement mechanism.

Claims (1)

[Claims for Utility Model Registration] ■ Two drive devices 3 and 4 are provided for driving and moving the working device 2 in two directions, left and right and up and down with respect to the machine 1, and The actuation command can be selected by operating and moving one lever 9 in each operating direction, which is operated along two operating movement paths in mutually intersecting directions, and Between the lever 9 and a member 13 that is interlocked with the driving movement of 2 to the side opposite to the side on which it is moving, and based on the operation, the lever 9 is moved from side to side of the working device via the interlocking member 13 by drive movement toward the center in the left-right direction of the working device 2. In a mobile agricultural machine that is equipped with an operation linkage mechanism A that automatically returns the lever 9 to a neutral position of the operation movement path for movement operation, the operation 3 for driving the work device 2 in the left-right direction or the drive device thereof Device 3 linked to 3
A and the interlocking member 13 are provided with a mechanism B that interlocks and moves the member 13 only when the working device 2 is driven within a certain range of drive movement in the left and right direction. Mobile agricultural machinery. (2) The mobile agricultural machine according to claim (2), wherein the interlocking movement mechanism B is composed of a release wire 14 and a spring 15.