JPH0726903Y2 - Reaper binding machine - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Application The present invention relates to a cutting and binding machine for cutting and binding grain culms.

(B) Prior art Conventionally, a pretreatment device including a mowing device and a binding device is attached to a front part of a machine body having a traveling device by a tubular support frame having a transmission shaft incorporated therein, and the support frame is attached to the rear part. There is already known a cutting and binding machine that is adjusted up and down around the center.

(C) Problems to be solved by the invention The known cutting and binding machine lowers the pretreatment device in a field where tires do not sink, such as in dry fields, and in a field where tires sink, such as in wet fields. The pretreatment device was raised to have a substantially constant cutting height regardless of the hardness of the field, but once the pretreatment device was adjusted up and down,
Since the relationship between the aircraft and the pretreatment device was fixed,
In the headland of the field, every time the machine is rotated, the worker has to bend his waist and push down the handle to raise the pretreatment device, which is very tiresome and troublesome, and When a wheel falls when crossing a ditch or a ridge,
I had to either lift the steering wheel to a position where I could get road clearance or ask for the cooperation of others.

(D) Means for Solving Problems The present invention is provided with a front portion of a transmission case in which a wheel is pivotally supported at a lower portion,
Through a support frame in which the transmission shaft is installed, a pretreatment device consisting of a reaper and a binding device, in a reaper binding machine that is supported so as to be able to move up and down, the support frame is equipped with a clutch case having a horizontal shaft, A drive gear fixed to the transmission shaft is meshed with a passive gear rotatably mounted on the horizontal shaft, and a clutch is provided between a side surface of the passive gear and an inner side surface of a clutch case facing the passive gear, and between the clutches. A switching clutch body that rotates integrally with the horizontal shaft is slidably mounted, and a clutch portion that selectively meshes with one of the clutches is attached to both side surfaces of the switching clutch body. When the horizontal axis rotates to the case, the support frame moves up and down so that the pre-treatment device uses a transmission device to the pre-treatment device when traveling around the aircraft or when crossing a groove or shore. The as can be held easily lift to a constant height to solve the problems described above.

(E) Action When performing normal mowing and binding, lower the pretreatment device,
Since the switching clutch body in the clutch case is separated from the passive gear to enter the clutch on the inner surface of the clutch case, the pretreatment device is held at a constant height.

When the machine body is rotated in the headland after the cutting and bundling work for one stroke is completed, when the switching clutch body is switched from the clutch case side to the clutch of the passive gear, the horizontal axis rotates and the pretreatment device rises. At this time, if the operation means is set to the disengagement operation system or the switching clutch body is disengaged and the clutch lever is released, the switching clutch body enters the clutch portion of the clutch case and operates. The device is held in a raised position. When the operator carries out the body traveling operation in a normal working posture with the waist stretched, and when the operator finishes the operation, when the switching clutch body is engaged and operated, the pretreatment device descends and returns to the working height.

(F) Embodiment An embodiment of the present invention will be described with reference to the drawings. 1 is a mission case in which tires 2, 2 are mounted on a lower axle, and an engine 4 is mounted on an engine frame 3 protruding rearward, A handle 5 is attached to the upper part.

Reference numeral 6 denotes a pretreatment device including a harvesting device 7 and a binding device 8, which has a transmission case 10 in which a pretreatment clutch is installed.
The transmission case 10 and a chain case 11 and a connecting plate 11a axially supported on the upper portion of the transmission case 1 so as to be vertically rotatable.
And are connected by a cylindrical support frame 13 in which a transmission shaft 12 is incorporated.

A clutch case 15 is provided near the lower portion of the support frame 13, and a horizontal shaft 17 is mounted on a bearing 16 which is attached to one side plate of the clutch case 15 and a cover 16 screwed onto the other side.
A worm gear 20 is rotatably supported on the horizontal shaft 17, and the switching clutch body 21 is not rotated but is slidably fitted to the horizontal shaft 17, and the worm gear 20 is fixed to the transmission shaft 12. It meshes with Worm 22.

Further, as shown in FIG. 3 (a), the inner surface of the lid 16 is provided with 18
Narrow recesses 16a, 16a (depicted by a chain line portion) are formed in which the meshing surface is deviated by 0 degree and is substantially parallel to the axial direction, and the switching clutch body 21 faces the recess 16a. On the surface, as shown in FIG. 3C, both side surfaces have projections 21a, 21a parallel to the axial direction and fitted in the recesses 16a, 16a.
As shown in FIG. 2 (b), the surface facing the 20 is provided with protrusions 21b ... Which are offset by 120 degrees and both side surfaces are tapered, and the surface facing the switching clutch body 21 of the worm gear 20 is provided. As shown in FIG. 3D, the protrusion 21 is displaced by 60 degrees.
A protrusion 20a that meshes with b is provided, and the switching clutch body 21 is urged by a spring 19 toward the lid 16.

Further, the shifter shaft 23 provided in the lower part of the clutch case 15 is supported by a pin 25 in its circumferential groove so as to rotate without moving forward and backward, and has a crescent-shaped projection 23a on the outer periphery of the inner end. The shift arm 26 fixed to the outer end is linked to the clutch lever 28 of the handle 5 through the operation wire 27.

Thus, one end of a link arm 32 is rotatably connected to the crank pin 31 protruding from the front end of the crank arm 30 attached to the end of the horizontal shaft 17, and the other end of the link arm 32 is
The transmission case 1 is rotatably connected to a support shaft 35 supported by a bracket 33 screwed on the upper surface of the mission case 1 near the lower part. In the drawing, 36 is a load hook, 37 is a cutting blade, 38 is a lateral conveying chain, 39 is a traveling speed change lever, 40 is a pretreatment clutch lever, and 41 is a traveling clutch lever.

In the above-mentioned mowing and bundling machine, during the mowing and bundling operation, the pretreatment device 6 is run with the lower surface thereof being lowered along the ground, and when the mowing and bundling of one stroke is completed and the machine is not to be rotated. , The pretreatment clutch lever is turned off to cut off the transmission to the pretreatment device 6, and the clutch lever of the handle 5
When the operating wire 27 is pulled by 28, the shifter shaft 23 rotates and its projection 25a moves the switching clutch body 21 against the spring 19 to the right in FIG. 21a slips out from the recess 16a on the inner surface of the lid 16, and the protrusion 21b on the other side is connected to the worm gear 20.
Since the horizontal shaft 17 rotates as it engages with the protrusion 20a on the side surface of the shaft, the crank arm 30 rotates at that time while the crank pin 31 is supported by the swingable link arm 32. Raised and the pretreatment device 6 integral therewith rises.

At that time, once the clutch lever 28 is turned on and off,
The projection 21a of the switching clutch body 21 rides on the projection 16b formed between the recesses 16a of the lid 16 and the projection 16b on the other side.
Keeps meshing with the projection 20a of the worm gear 20, so if the clutch lever 28 is put in and released immediately after the clutch lever 28 is operated, the switching clutch body 21 will be
When it rotates 0 degrees, it disengages from the worm gear 20 and the lid 16
The pretreatment device 6 is held in a raised state by meshing with the convex portion 16a.

Next, when the aircraft has finished traveling and the clutch lever 28 is engaged with one touch, the switching clutch body 21 enters the worm gear 20 as a clutch, rotates 180 degrees, disengages from the worm gear 20, and enters the lid 16 side. Then, the pretreatment device 6
Descends and returns to the working posture.

If a plurality of recesses 16a on the inner surface of the lid 16 are provided at an appropriate angle, the height of the pretreatment device 6 can be adjusted by one-touch operation of the clutch lever 28. Also,
In the above embodiment, the rotation center of the base of the support frame 13 is the input shaft 42. However, the chain case 11 is fixed to the mission case 1, and the rear end of the support frame 13 is connected to the chain case 11 and the connecting plate 11a. It may be connected to the front part of the so as to be vertically rotatable.

(G) Effect of the device Since the device of the present invention is configured as described above, the pre-treatment device rises when the switching clutch body is turned on when the aircraft is rotated after the work of one stroke is completed. The person does not need to push up the pretreatment device 6 in a state in which the waist is tilted forward each time as in the conventional case, and the person can easily perform the rounding operation in the normal standing posture.

Further, even when crossing the groove or the ridge, the pretreatment device 6 can be lifted by operating the position of the switching clutch body in the same manner as when the vehicle is traveling, so that the groove or the ridge can be easily crossed. it can.

Further, when the traveling of the machine body is completed or when the vehicle crosses the groove or the ridge, the pretreatment device can be easily lowered to return to the normal working posture by operating the switching clutch body.

[Brief description of drawings]

The drawings show one embodiment of the present invention. FIG. 1 is a side view of a main part, FIG. 2 is a sectional view of the same as above, and FIGS. 3 (a), (b), (c), ( d) is an end view of the clutch device, FIG. 4 is a side view of the cutting and binding machine, and FIG. 5 is a plan view of the same. 1 ... Mission case, 2 ... Tire, 5 ... Handle, 6 ... Pretreatment device, 7 ... Mowing device, 8 ... Binding device, 12 ... Transmission shaft, 13 ... Support frame, 15 ... Clutch case, 16 ... Lid, 17 ... Horizontal axis, 19 ... Spring,
20 …… worm gear, 21 …… switching clutch body, 23 …… shifter shaft, 27 …… operating wire, 28 …… clutch lever, 30 …… crank arm, 32 …… link arm, 33…
…bracket

Claims (1)

[Scope of utility model registration request] 1. A pretreatment device 6 comprising a harvesting device 7 and a binding device 8 is lifted up and down via a support frame 13 having a transmission shaft 12 installed in the front part of a transmission case having a wheel rotatably supported at a lower portion thereof. In the reaper binding machine that is pos- sibly supported, the support frame
A clutch case 15 having a horizontal shaft 17 is attached to 13, and a drive gear fixed to the transmission shaft 12 is meshed with a passive gear rotatably attached to the horizontal shaft 17, and the side face of the passive gear and the side face thereof are opposed to the passive gear. A clutch is provided on the inner side surface of the clutch case 15, and a switching clutch body 21 that rotates integrally with the horizontal shaft 17 is slidably mounted between the clutches, and one of the side surfaces of the switching clutch body 21 is mounted on either side. A clutch portion that selectively meshes with the clutch is attached, and an elevating device that elevates and lowers the support frame 13 when the horizontal shaft 17 rotates is interposed between the horizontal shaft 17 and the transmission case. Mowing and binding machine.