JPS5918007B2 - Combine operating device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in an operating device for operating a traveling and reaping device of a combine harvester, and provides a device for simultaneously releasing a handbrake by operating a main shift lever.

The operating device for a combine harvester includes side clutch levers provided on the left and right sides in front of the driver's seat for changing the direction of travel, and a main shift lever located between the levers for controlling travel and stopping of the machine.

In this device, when parking the aircraft, both side clutch levers are pulled to simultaneously apply brakes to both drive wheel axles of the crawler and lock them.However, when the main gear shift lever is engaged by the next operation, This must be done after both side clutch levers have been returned to their original positions; conventionally, the brakes have been released by operating the side clutch levers or using a separate lever.

As mentioned above, when a combine harvester is operated to move forward or backward, it is necessary to release the brake by operating a side clutch lever or the like prior to the operation, which makes the operation complicated.

In addition, there were times when the main gear shift lever was operated incorrectly without releasing the brake, which posed a danger in handling.

The present invention was obtained in order to eliminate the drawbacks of the conventional operating device described above, and an object of the present invention is to provide a device that can automatically release the brake by operating the main gear shift lever. .

In order to achieve this object, the present invention prevents the movement of the two side clutch levers by the parking brake pin when the levers are pulled, and moves the parking brake pins when the main operating lever is operated to prevent the movement of the side clutch levers. This system is characterized by releasing the engagement between the lever and the parking brake pin, and simultaneously releasing the brake.

The present invention will be described in detail below with reference to the drawings.

FIG. 1 is a side view schematically showing the combine harvester. A driver's seat is provided at the rear side of the combine harvester 30, and a main gear shift lever 5 is provided in front of the driver's seat. The low speed clutch 32 and the reaping latch 31 are operated intermittently, and the side clutch 33 is operated by the side clutch levers 3 and 3'.
, 33' and the brake are operated.

In addition, 34 is a seed layer conveyor, 35 is a crawler, and 36 is a threshing part.

FIG. 2 is a side view showing the main parts of the combine harvester operating device in a state where neither the main shift lever nor the side clutch lever is operated, and FIG. 3 is a plan view thereof.

1 indicates a part of the outer edge of the panel, and the operator should follow the arrow A.
Sit down facing the direction and operate the machine.

2 is the shaft, and on top of this the side clutch levers 3, 3'
A main gear shift lever 5 is swingably provided, and a side clutch wire 4,
4' is connected, and the side clutch levers 3, 3'
By rotating in the direction of arrow B, the side clutch of the drive wheel of the crawler 35 is disengaged, and by further rotating in the same direction, the brake is applied to the drive wheel.

The main shift lever 5 is configured to swing in the longitudinal direction indicated by arrow C in FIG. 2 and in the left-right direction indicated by arrows D and D' in FIG.

When the main shift lever 5 is pushed in the direction of arrow C in the state shown by the solid line in FIGS. 2 and 3, the main shift lever 5 rotates about the shaft 2 and attaches to the mounting ring of the main shift lever. The fixed main speed change plate 6 is rotated in the direction of the arrow, and the U plate 9, spring 10, and reaping latch wire 11 connected thereto are pulled in the direction of the arrow σ, thereby driving the reaping section. has been done.

In addition, when the main shift lever 5 is at position 5' in FIG.
The main shift lever 5 is rotated in the forward direction of arrow C in each engaged state. By moving the combine harvester, the combine harvester can be run at low speed or high speed while the reaping section is driven.

In addition, a U plate 9' spring 10' and a low speed clutch wire 11' are connected to the low speed clutch plate 15, and a spring 10'' and a low speed clutch wire 11'' are connected to the high speed clutch plate 15'ζ, respectively. has been done.

Next, the main parts of the device of the present invention will be explained.

A main speed change plate 6 is fixed to the attachment ring 5b of the main speed change lever 5 (FIG. 3), and a cam 7 is pivotally supported at the tip of this plate by a pin 7a.

Also, the mounting ring 3a of the side clutch levers 3, 3'
l 32' each have a side clutch plate 14.
14' is provided.

This side clutch plate has a radius R centered on shaft 2.
It has a guide surface 14a having a circular arc and a fitting portion 14b.

As shown in FIG. 8, the cam 7 is swingably supported by the main speed change plate 6 by a pin 7a, and further supported by a post 7b.
The spring 8 wound around the protrusion 7
A pin 6a fixed to one end of the main speed change plate 6 is further held by the straight portion of the spring 8.

Therefore, the cam 7 swings about the pin 7a, but the spring 8 exerts an elastic force that returns it to the state shown in FIG.

7d is a cam surface which acts to push up a parking brake pin, which will be described later.

On the other hand, a parking brake shaft 12 is arranged parallel to and slightly apart from the shaft 2.
is provided, thereby supporting the parking brake pin 13, and applying an elastic force to the parking brake pin 13 by applying a spring 16 so that the parking brake pin 13 is always in contact with the guide surface 14a of the side clutch plate 14. ing.

Next, the operation of the device according to the present invention will be explained.

Fig. 2 shows a state in which the main shift lever 5 is in the neutral position and the side clutch levers 3, 3' are not activated. When pulled to , the state shown in Fig. 4 is obtained.

(The side clutch lever 3 is left and another lever 3' is pulled.) Then, the side clutch plate 14', which is integrally constructed with the side clutch lever 3', rotates about @2.

(The same applies to the side clutch lever 3) In the state shown in Fig. 2, the side clutch lever l-1
The parking brake pin 13 is in a pressed state against the guide surface 14a of 4, 14'.

As shown in FIG. 4, even if the side clutch lever 3' (or side clutch lever 3) rotates and the side clutch plate 14' rotates, another side clutch plate 1
Since the guide surface 14a of No. 4 pushes up the No. 1 parking brake pin 13, the side clutch lever 3°3' is not locked.

Figure 5 shows the left and right side clutch levers 3, 3' pulled out, and the side clutch plates 14, 1
4' are rotated to the same position, so the guide surface 14a and the fitting portion 14b are aligned.

On the other hand, since the parking brake pin 13 is pressed against the side clutch plate by the action of the spring 16 around the parking brake shaft 12, it is fitted into the fitting portion 14b.

On the other hand, tension acts on the side clutch wire 4° 4' in the direction of the arrow and attempts to rotate the side clutch levers 3, 3', but the movement is blocked by the parking brake pin 13.

In this state, both drive wheel axles of the left and right crawlers are simultaneously braked and the combine is placed in a parked state.

When the main shift lever 5 is pushed in the direction of arrow C from the state shown in FIG. 5, the main shift plate 6 integrated therewith also rotates about the shaft 2.

A cam 7 is attached to a pin 7 on this main transmission plate 6 as shown in FIG.
a, which also rotates around the shaft 2, and when the pin 7a moves from the position of line A to the position shown in the diagram, the cam 7 comes to the position of the chain line and the cam surface 7d comes into contact with the parking brake pin 13.

When the main shift lever 5 is further pushed, the cam surface 7d pushes the parking brake pin 13 upwards from the fitting 1814b and the lock is released, and the side clutch levers 3 and 3' are automatically moved by the tension of the side clutch wires 4 and 4'. It rotates to the state shown in Fig. 7.

FIG. 6 is a diagram showing the release operation of the parking brake pin 13 by the cam 7.

Point a is the center of axis 2, point S is the center of pin 7a, point C is the center of parking brake pin 13, point d is the center of parking brake axis 12, and l is the distance between points a and b, respectively. .

In FIG. 5, when the cam surface 7d of the cam 7 contacts the parking brake pin 13, the points a-b-c-d
It becomes a link.

Next, when the main shift lever 5 is rotated by an angle θ, the pin 7
The center of a moves to point b' on the line of radius l.

Since the cam surface 7d is formed into an arcuate surface along the surface of the parking brake pin 13, the parking brake pin 13 is pressed by the cam surface 7d and moves.

Since the parking brake pin 13 rotates around the parking brake shaft 12, the point C moves on a line with a radius 11, and the link deforms into a-b'-c'-d, and the point c1 accordingly. In other words, the parking brake pin 13 is closer to C than C.
1, and the side clutch levers 3, 3', which have been locked by the parking brake pin 13, are released from their positions as shown in FIG.

The side clutch levers 3, 3' can be operated in the off position (position shown in Fig. 2) and the on position (position shown in Fig. 7) of the main shift lever 5; 3' can be released only when the main shift lever 5 is moved from the off position to the on position.

That is, only when the reaping clutch is engaged, or when the reaping clutch is engaged and low-speed or high-speed running operation is engaged, the parking brake state of the side clutch lever 3.degree. 3' is simultaneously released.

Note that the cam 7, which rotates around the shaft 2 together with the main shift lever 5, rotates when the main shift lever 5 is moved from the on side to the off side (when returning from the state shown in Fig. 7 to the state shown in Fig. 2). 7 needs to escape the parking brake pin 13, so
As shown in FIG. 8, the cam 7 is supported by a spring 8.

In the combine operating device according to the present invention, when both side clutch levers 3 and 3' are pulled simultaneously,
These side clutch levers 3, 3' are locked with a parking brake pin 13, and the lock is automatically released when the main gear shift lever 5, which controls traveling and stopping of the aircraft, is next operated. Therefore, it is not necessary to operate the side clutch levers 3, 3' at all when starting the combine harvester from a parked state, and the operation is significantly simplified compared to conventional devices, and the side clutch lever can be moved even when the side clutch lever is engaged. It is possible to prevent erroneous operations such as starting the vehicle while the brake is applied.

[Brief explanation of the drawing]

FIG. 1 is a schematic side view of the combine harvester, and FIG. 2 is a side view showing the main parts of the operating device of the combine, showing both the main gear shift lever and the side clutch lever in the disengaged state. FIG. 3 is a plan view of the operating device, FIGS. 4, 5, and 7 are side views showing the operation of the operating device, and FIG. 6 is a diagram showing the unlocking operation of the side clutch lever. , Figure 8A. B shows a side sectional view and a side view of the cam of the unlocking device, respectively. 2...Shaft, 3, 3'...Side clutch lever 14, 4'...Side clutch wire,
5...Main gear shift lever, 6...Main gear shift plate, 7...Cam, 8...Spring, 9...U plate, 10... Spring, 11... Reaping wire, 12...
... Parking brake shaft, 13 ... Parking brake pin, 14 ... Side clutch plate, 15
...Low speed clutch plate, 15'...
・High speed clutch plate.

Claims (1)

[Claims] 1. In a combine harvester that has a main gear shift lever that controls running and stopping of the aircraft, and two side clutch levers that operate the side clutches and brakes of the left and right crawlers, the two side clutch levers are simultaneously disconnected and operated. An operating device for a combine harvester, characterized in that the two side clutch levers are locked when the main gear shift lever is engaged, and the locks are automatically released when the main shift lever is engaged.