JPS6133874Y2 - - Google Patents

Description

[Detailed description of the invention] This invention selectively intermittents the reaping clutch automatically or artificially based on the change in the posture of the automatic return type contact rocking sensor to the path of introduction of the stem culm into the reaping device. This invention relates to a reaping harvester configured to be operable.

This type of harvester automatically operates the reaping clutch intermittently based on the detection of the presence or absence of a stem culm, which simplifies the operation and suppresses noise and vibration caused by unnecessary driving of the reaping unit. Moreover, the aircraft sinks so much that the sensor gets caught in the mud.
The clutch can be operated manually if there is a risk of the sensor getting caught in a weed and causing a malfunction, or if there is a risk of the sensor pushing down the stem culm.

However, in the past, the reaping clutch could be operated intermittently even when the contact swing sensor was in operation across the culm introduction path to the reaping device, so the protrusion of the sensor could cause errors during inconvenient manual operations. There was a problem with the sensor leaving it in a protruding state, causing it to accidentally push down the stem culm or create resistance to running.

For example, as described in Japanese Utility Model Application Publication No. 51-140723, if a contact swing sensor and a manually operated lever are linked and the reaping clutch is engaged by manually operating the lever, At the same time, the rocking sensor is forced to move away from the stem culm introduction path, and the artificial reaping clutch is cut and the rocking sensor is forced to swing back. A reaping and harvesting machine has been proposed.

Although such a reaping/harvesting machine can solve the above-mentioned problems, if there is an emergency situation such as a sudden increase in the reaping load and the reaping clutch needs to be cut immediately, it may be difficult to use the reaping/harvesting machine if there is a stem culm in the stem culm introduction route. Since this stem culm obstructs the forced return swing of the swing sensor, there is a problem in that a quick cutting operation cannot be performed.

Furthermore, if the stem culm to be harvested is weak and it is not possible to apply sufficient contact pressure to the contact swing sensor, the swing sensor can be forcibly removed from the stem culm introduction path by operating the manual control lever. At the same time, the clutch must be engaged and held in this operating state, and if the clutch is disengaged in an emergency situation, the rocking sensor will push down the weak stem culm. There is also.

The present invention solves the clutch disengagement operation in a state where the rocking sensor is swung away from the stem culm introduction path, which is caused by the above-mentioned configuration in which the contact rocking sensor and the manually operated lever are simply linked, and the rocking motion. To reliably avoid problems in engaging and disengaging the clutch in a state where sufficient contact pressure cannot be applied to the sensor, and to simplify the interlocking configuration of the human operating tool and the contact rocking sensor for the clutch, and It is an object of the present invention to enable switching between a state in which a clutch is manually operated and a state in which it is automatically operated to be performed with good operability.

To achieve the above object, the feature of the present invention is that in the reaping/harvesting machine described above, a rod is actuated to swing the swinging lever, which is interlocked with the movable piece that operates the clutch, only in the clutch disengagement direction. , a spring that is linked to the automatic return operation of the rocking sensor from the rocking state and urges the rocking lever in the clutch engagement direction, and a manual operation that allows the rocking lever to swing only in the clutch disengaging direction. A tool is provided, and when the rocking sensor is in a rocking state, the biasing force of the spring in the inward direction and the manipulating force in the cutting direction of the manual operating tool work together to enable the manual engagement and disconnection of the clutch. In addition, the rod is provided with a cam mechanism that releasably fixes the rocking sensor in a state where it is forcibly retracted from the stem culm introduction path and rocked, and from this construction, the following effects can be obtained. play.

In other words, the reaping clutch cannot be manually operated unless the swing sensor is swung to retract. Therefore, as in the past, if the swing sensor is accidentally left protruding during manual operation, the swing sensor can be used to remove the stem culm. This has made it possible to reliably avoid inconvenient situations such as pushing down the aircraft or creating resistance to the aircraft's movement.

Furthermore, even when the swing sensor swings back and the reaping clutch is automatically engaged, the clutch can be manually disengaged and returned to the engaged state at will, which reduces the reaping load. It is possible to quickly respond to emergencies such as when there is a sudden increase in the number of cases, and it is more convenient than the case where the clutch disengagement operation cannot be performed unless the rocking sensor is rocked back to its original position.

Furthermore, in order to release the link between the rocking sensor and the clutch and switch to a state in which the clutch is operated only manually, a cam mechanism is applied to the rod that is linked to the rocking sensor, and this can be done by operating the cam mechanism. Therefore, the manual operation position for the cam mechanism can be set at any position that is easy to operate, and compared to the case where the swing sensor is directly operated at a position adjacent to the lifting device etc., it is extremely easy to operate. It is possible to easily reduce the operating force by appropriately setting the lever ratio to the cam mechanism.

Moreover, in order to provide the above-mentioned convenient functions, the interlocking relationship between the human operating tool, the swing sensor, and one swing lever must be improved, and the spring and swing sensor required for the interlocking configuration must be fixed. By organically relating the mechanism,
Overall, we were able to make the interlocking configuration relatively simple.

Next, embodiments of the present invention will be described in detail based on the drawings.

A transmission M is directly connected to the engine E, and the transmission M is located on the side of the engine E, and the engine casing 1
Cylindrical stays 3 and 4 are extended forward from the lateral sides of the mission case 2, and a frame 5 is connected to both the stays 3 and 4. A transmission case 7 with one low-pressure wheel 6 mounted on the shaft is located below the
The traveling aircraft is configured with the following.

A pulling device 8 that pulls up planted stem culms in the field, a reaping device 9 that reaps the lifted stem culms, and a lateral conveyance device that conveys the cut stem culms to one side of the machine body while making them run along the inclined guide plate 10. A reaping section 13 consisting of a binding device 12 for converging and tying the conveyed stem culms and discharging them to the field is connected to the frame 5 at the front of the traveling machine, and a control handle 1 is provided at the rear of the traveling machine.
4 is extended to transmit the power from the engine E to the wheels 6 via the transmission M, and on the other hand, to drive the reaping section via the internal transmission shaft 15 to the stay 4 connected to the transmission case 2. A traveling type binder, which is an example of a reaping harvester, is configured to transmit the information to the shaft 16, and is configured to continuously bind planted stem culms in the field as it travels. There is.

The transmission case 7 is pivotally connected to the mission case 2 so as to be able to swing freely, and is also configured to be freely fixed to the stay 4 via a fixed bracket 17, so that the wheels 6 can be positioned vertically with respect to the reaping section 13. The structure is such that the attitude of the reaping section 13 relative to the ground can be adjusted to be as constant as possible regardless of field conditions such as the wheels 6 sinking.

Next, the transmission structure to the reaping section 13 will be explained.

The front end of the transmission shaft 15 is inserted into a transmission case 18 provided in the reaping section 13, and is interlocked with the reaping section drive shaft 16 in the vertical direction via a reaping clutch 19 and a bevel gear interlocking mechanism. A crank arm for driving the reaping device 9 is connected to the lower end of this drive shaft 16, and a binding device 1 is connected between the upper and lower ends.
The transmission chain to 2 is wound. Note that power is transmitted to the pulling device 8 via a binding device 12.

The reaping clutch 19 is automatically turned on and off based on the presence or absence of planted stem culms in the stem culm introduction path R to the reaping device 9. It is configured so that it can be operated by switching to a state where it can be turned on or off at will, and this structure will be explained below.

The movable piece 24 of the clutch 19 is connected to the spring 2
1, a clutch operating shaft 23 having a shift fork 22 extends downwardly and is integrally connected with a swing lever 25. In addition, there is a contact rod 26 located on the side of the stem culm introduction route R that swings backward when it comes into contact with the introduced planted stem culm, and swings back to a position crossing the route R when the contact is removed. A rocking sensor 27 is pivotally mounted, and the rear part of a rod 28 extending rearward from the extending end beyond the rocking axis of the sensor 27 is inserted into the lower end of the rocking lever 25. A spring 29 and a spring receiving fitting 30 are attached to the insertion portion to press the swing lever 25 toward the clutch engagement side. When the sensor 27 is swung backward by the planted grain culm and the rod 28 is shifted forward, the swiveling lever 25 is pushed forward via the spring 29, and the clutch 19 is engaged. , when the sensor 27 swings back forward, the rod 28 is shifted backward,
The clutch 19 is disengaged by pressing the swinging lever 25 in the clutch disengagement direction.

The boss member 31 of the sensor 27 is loosely fitted onto a support shaft 33 fixed to a bracket 32, and the sensor 27 is returned to its return position by contacting the boss member 31 with a protrusion 34 provided on the bracket 32. and the maximum retreat position is regulated.

A plate-shaped driven plate 35 is connected to the rod 28 near the interlocking point with the reaping clutch 19, and a rotating cam 36 is provided on the frame 5 at a position close to the driven plate 35, and
An operating lever 37 is connected to the rotating cam 36, and the rod 2 is rotated by rotating the operating lever 37.
8 is pushed or pulled, the sensor 27 is forcibly swung, and the sensor 27 is switched between a posture of crossing the route R and a posture of evacuating from the route R while allowing the backward oscillation, and a posture of evacuating from the route R. configured to be retained.

The portions of the circumferential surface of the rotary cam 36 corresponding to the switching states to the two postures described above are linear cam surfaces.
F ₁ and F ₂ are formed to prevent the rotation of the cam 36 at the time of contact with the driven plate 35, and to maintain the above-mentioned two postures by this contact structure.

In addition, a contact fitting 41 connected via a release wire 40 to a manual operating tool 39 swingably attached to the left grip portion 38 of the operating handle 14 is inserted into the middle of the swing lever 25. A return spring 43 is interposed between the fixed wire metal fitting 42 and the abutting metal fitting 41.

Therefore, only in the position where the sensor 27 is retracted from the stem culm introduction path R as described above, the rod 28 is shifted forward and the swing lever 25
The swinging lever 25 supported by the abutting metal fitting 41 is swung until it comes into contact with the abutting metal fitting 41. In this state, when the manual operation tool 39 is grasped and the wire 40 is pulled backward, the swinging lever 25 supported by the abutting metal fitting 41 is swung. is swung against the spring 29 to disengage the clutch 19, and when the manual operating tool 39 is returned, the swiveling lever 25 is moved against the spring 29.
The clutch 19 is then swung forward and engaged. Note that the human operating tool 39 is configured to be able to be held in a grip position.

4 and 5 show another embodiment, in which the cam 36 is rotatably and pivotally connected to the rod 28, and a driven plate 35 is connected to a predetermined position of the frame 5. is configured to be rotatable and fixed.

In order to maintain the sensor 27 in a position retracted from the stem culm introduction path R, the rotary operation type cam 36 is not limited to acting on the driven plate 35 as in the above-mentioned embodiment. Various structures can be adopted, such as a structure in which the member forming the cam surface is configured to slide and act on the driven plate 35 as the member forms the cam surface, and is collectively referred to as a cam mechanism 44 . do.

Further, a release wire is connected to the operating lever 37 of the cam mechanism 44 , and the operating handle 14 is connected to the release wire.
It may be configured so that it is extended nearby and can be operated from near the control handle 14.

[Brief explanation of the drawing]

The drawings show an embodiment of the reaping and harvesting machine according to the present invention, in which Fig. 1 is an overall side view of the walking binder, Fig. 2 is an overall plan view, and Fig. 3 is a partially cutaway side view showing the reaping clutch operating structure. , FIG. 4 is a side view of the main part of another embodiment, and FIG. 5 is a plan view of the main part of another embodiment. 9... Reaping device, 19... Reaping clutch, 24
...Movable piece, 25...Rocking lever, 27...Rocking sensor, 28...Rod, 29...Spring, 39...Human operating tool, 44 ...Cam mechanism, R
... Stem culm introduction route.

Claims (1)

[Scope of Claim for Utility Model Registration] A reaping harvester configured to selectively operate the reaping clutch 19 intermittently based on the change in attitude of the automatic return type contact swing sensor 27 on the path R of introducing the stem culm into the reaping device 9. and a swinging lever 25 interlocking with the movable piece 24 for operating the clutch 19.
Rod 2 that swings only in the clutch disengagement direction
8 is linked to the automatic return operation of the rocking sensor 27 from the rocking state, and a spring 29 that biases the rocking lever 25 in the clutch engagement direction and the rocking lever 25 in the clutch disengaging direction. A manual operating tool 39 that can only be operated in a swinging manner is provided, and when the swinging sensor 27 is in the swinging state, the biasing force of the spring 29 in the input direction and the operating force of the manual operating tool 39 in the cutting direction are combined. The structure is configured such that the clutch 19 can be manually operated in conjunction with the clutch 19, and the rocking sensor 27
The reaping/harvesting machine is characterized in that a cam mechanism 44 is provided on the rod 28 for releasably fixing the stem in a state in which it is forcibly retracted from the stem culm introduction path R and swung. The reaping/harvesting machine according to claim 1, wherein the cam mechanism 44 is configured to be rotatably operated.