JPS5912021Y2 - Release mechanism of bundled grain culm - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a bundled grain culm discharge mechanism that pushes out the root part of the grain culm bundle bound after harvesting in a binder and discharges it to the outside of the machine.

The binder is equipped with a reaping device that transports and reaps the grain culms in the field, and a binding device that binds the harvested grain culms and releases them outside the machine, and these are mounted on a sled connected to the drive unit. has been done.

Grain culms in the field, which have been raked by the grass cutting body at the front end of the reaping device, are conveyed while being pulled up vertically by the pulling device, and at the end of the conveyance, they are raked into the cutting blade by the star foil and harvested.

The harvested grain culms are led to a bundling passage, bound into predetermined amounts by a bundling mechanism provided in the bundling device, and then pushed out and discharged outside the machine by a discharge mechanism arranged in parallel.

The discharging mechanism in this type of bundling device is generally equipped with upper and lower discharging arms in the form of an arc or a straight line. The bundled grain culm bundle is pushed out and discharged out of the machine by moving along the binding path, but on the return trip from the end of the discharge operation of this discharge arm to the start end, it is moved away from the binding path. There must be.

Conventionally, the discharge arm is supported by a rotary lever and a link mechanism, and when the rotary lever is rotated, the combined motion of this and the link mechanism causes the distal end of the discharge arm to take an elliptical trajectory. Furthermore, in order to quickly move the discharging arm out of the binding path and stop it at the end of the discharging operation, a device has been proposed and used which is provided with a spring that pulls the discharging arm and a pin that locks the rotation.

However, in such conventional release mechanisms,
a pin and a lever for stopping rotation of the ejection arm;
Since the rotary lever and the pin that drives it are constructed separately, the structure is complicated and adjustment is troublesome.

The present invention was developed in view of the above points, and the ejection arm is supported by a lever installed on the same axis as the rotating body, and a pin provided on the rotating body is used to drive and stop the rotation of the lever. The present invention provides a bundled grain culm discharge mechanism which is designed to simplify the structure and ensure that the discharge arm operates in synchronization with the binding operation.

The structure and the like will be explained in detail below with reference to embodiments shown in the drawings.

1 to 3 show a bundled grain culm release mechanism according to the present invention, FIG. 1 is a plan view of a binder implementing this, FIG. 2 is a plan view of the main parts of a reaping device and a binding device, FIG. 3 is an explanatory diagram of the operation of the release mechanism.

The binder, which is generally designated by the reference numeral 1 in the figure, is composed of a drive section 2 and a reaping section 3, which are detachably connected by a connection mechanism (not shown).

Of these, the drive unit 2 is equipped with an engine 4,
The rotation is transmitted to one drive wheel 6 via a transmission in the gearbox 5, and is branched from the input shaft of the gearbox 5 and transmitted to the reaping section 3.

Further, an operation box 7 for operating a main clutch for driving is attached to the side of the engine 4, and a string case 8 for storing a binding string is provided in front of the engine 4. .

On the other hand, at the front end of the reaping section 3, weeding bodies 9 and 10 for scraping the grain culms in the field are provided and supported by a weeding rod supported along the ground.

Furthermore, behind these left and right grass divisions 9, 10, a lifting device 11 consisting of a chain case 11a and a lifting chain stretched inside the chain case 11a stands up so as to tilt backward as it goes upward. It is provided.

The lifting chain of this lifting device 11 has a large number of lugs 11b arranged at regular intervals, and the running of the lifting chain holds the tip of the uncut culm 12 shown in FIG. transport it, and stand it upright.

Further, a rod-shaped grain culm guide 13 is supported on the conveyance path of the uncut culm 12.

Further, at the end of the conveyance path, a cutting blade shaft 14 is provided upright, which is driven by the engine 4 via a transmission shaft and rotates in the direction shown by arrow A in the figure. A star wheel 15 for scraping the uncut culm 12 with protruding pieces in three directions, and a rotary blade 16 consisting of a rotary disc 16a and eight triangular blades 16b disposed around its periphery are arranged vertically. The shafts are mounted parallel to each other.

On the other hand, a pair of left and right sleds 17 and 18 are provided below the weeding rod that supports the weeding bodies 9, 10, etc., and which carry the entire reaping section 3 and run in contact with the ground. As shown in FIG. 2, a chain case 19 is attached to the sled 17 on the right side as viewed in the machine advancing direction, and extends parallel to the conveyance path of the uncut culm 6.

A guide plate 20 attached to the center of the chain case 19 has a receiving blade 21 that faces the rotating triangular blade 16b and forms a V-shape with it to cut the uncut culm 12. It is installed.

Further, a bracket home 22 having a U-shape in plan view is fixedly provided on the outside of the receiving blade 21, and a protrusion of the bracket home 22 is provided with a thin plate having an arc shape. A grain culm holder 23 extending upwardly of the chain case 19 is screwed onto the chain case 19.

The grain stalks cut by the rotary blade 16 are pushed out into a bundling path formed along these platforms 22 and grain stalk receivers 23.

On both sides of this binding path, a drive mechanism 24 and a binding mechanism 25 are provided.
A binding device consisting of a discharge mechanism 26 and a release mechanism 26 is provided.

Of these, the drive mechanism 24 includes a camshaft 27 that is chain-connected to a transmission shaft that drives the cutting blade shaft 14, a lever shaft 28 that is gear-connected to the camshaft, and a lever shaft 28 that is connected with a gear.
and a T-projection shaft 29 connected via a clutch mechanism (not shown) are arranged in a triangular shape.

The T protrusion shaft 29 is provided with a T that rotates by the pressure of the harvested grain culm pushed out into the binding path to connect a clutch and rotate a string hooking buckle (not shown) and a sprocket 30. A protrusion 31 is pivoted.

Further, the chain 31 stretched around the sprocket 30 is guided to the binding mechanism 25, and the sprocket 31 on the binding shaft 32 is guided to the binding mechanism 25.
It is hung on 3.

The binding mechanism 25 driven by the sprocket 33 includes a timing gear 34 that has teeth on a part of its outer periphery and is rotatably attached to the binding shaft 32 and rotates in the direction shown by arrow B in the figure, and the platform 22. It is attached to a knotter base 35 that connects both ends of the knotter and is driven by a timing gear 34, and is constituted by a knotter bill 36 that forms a knot at the end of the binding string, a string holder 37, and the like.

The binding shaft 32 has a support portion 38a and a protrusion 38b.
A rotary lever 38 shaped like an L is loosely mounted above the timing gear 34, and a pin 39 is mounted on the upper surface of the timing gear 34 between the support portion 38a and the protrusion 38b. It is located and planted in

This pin 39 pushes the support part 38a by the rotation of the timing gear 34 and drives the rotation of the rotation lever 38, and also pushes the protrusion 38 when the timing gear 34 stops.
It also has the function of stopping the rotation lever 38 by bringing b into contact with this.

Furthermore, a link shaft 40 is provided outside the chain case 19 and is supported by the sled 17 and is parallel to the binding shaft 32. This link shaft 40 has a link mechanism together with a connecting portion 41a of the release arm 41. Shaping swing arm 42
The timing gear 34 is pivoted so as to be swingable, and the timing gear 34 is supported by a tension coil spring 43 mounted between the sled 17
is biased in the direction away from.

The release arm 41 includes a connecting part 41 a whose cylindrical part at one end is pivotally attached to the free end of the swing arm 42 , and two upper and lower discharge arms 41 supported by the connecting part 41 a.
b and 41 C.

Among these, the upper discharge arm ▲41b is the connecting part 41a
A boss 41 d provided at the tip of the arm projecting in an L-shape from the tip is rotatably supported by the rotary lever 38 , and when the rotary lever 38 rotates, the boss 41 d is moved toward the platform 22 side. When the emitting part 41 e
The tip of the tube is arranged so that the tip thereof faces the binding passage.

Further, the lower ejection arm 41e is shaped like an arc, and together with the upper ejection arm 41b, the distal end thereof is shaped so as to face the binding passage.

In addition, there is a guide rod 44 that guides the root portion of the bundled grain culm when it is released, a foldable ear discharge device 45 that is connected to the cutting blade shaft 14 by a belt and conveys the tip of the bundled grain culm, and an uncut field. A narrow guide 46 for removing the culm, a tip guide plate 47 for guiding the tip of the grain culm to be transported, and the like are provided.

The operation of the binder 1 constructed as above will be explained.

As the machine progresses, the uncut culms 12 are swept away by the weed cutting bodies 9 and 10 and guided to the conveyance path by the pulling device 11.
The grains are conveyed along the grain guide 13 while being pulled up by the grains.

When the transported uncut culm 12 reaches the end of the transport, it is released from the grain culm guide 13 and moved to the star foil 15.
It is pushed into the gap between the triangular blade 16b of the rotary blade 16 and the receiving blade 21, and is harvested by the triangular blade 16b that rotates in sequence.

The harvested grain culm is pushed out into the bundling passage by the scraping action of the star foil and the crank action of a packer (not shown) and presses against the T projection 31.

When the harvested grain culm reaches a predetermined amount, the T projection 31 is rotated by the pressure and a clutch (not shown) is connected, whereby the 21 dollar is first rotated and the binding cord is wrapped around the harvested grain culm. .

At the same time, the binding mechanism 25 is driven by the chain 31.
The timing gear 34 rotates, and the knock bill 36 and string holder 37 driven thereby form a knot at the end of the binding string wrapped around the grain culm.

When the timing gear 34 is stopped,
The swinging arm 42 is biased by the tension coil spring 43, so that the rotary lever 38 is moved by its protrusion 38.
b is in contact with the pin 39 and stopped, but when the timing gear 34 begins to rotate, the pin 39 separates from the protrusion 38b and rotates, and comes into contact with the support part 38a of the rotary lever 38 and stops it. Rotate together.

The rotation of the rotary lever 38 causes the ejection arm 41 to move along a trajectory as shown by the chain line in FIG.

That is, as shown by the solid line in the figure, the tension coil spring 43
The dispensing arm 41, which had stopped with its tip facing the position where it had moved out of the bundling passage under the force of force, reaches the dispensing starting end through a return path parallel to the bundling passage, and the dispensing arm 41 reaches the dispensing starting end, leaving the distal tip. Rush into the binding passage.

Thereafter, the tip moves along an arcuate trajectory as shown in the figure, and releases the bundled grain culm out of the machine from between the T projection 31 and the platform 22 located at the chain line position.

When the distal end of the discharging arm 41 reaches the discharging end, the timing gear 34 stops and the pin 39 stops at the position shown in the figure, but the rotating lever 38 continues to rotate due to the bias of the tension coil spring 43 and the protrusion 38b stops at the position where it comes into contact with the pin 39.

At this time, the tip of the discharge arm 41 rapidly moves to the position shown by the solid line in the figure.

In the grain culm discharging operation as described above, the pin 39 contacts the rotating lever 38 and drives the discharging arm 41 via this, and when the timing gear 34 stops after discharging, the protrusion of the rotating lever 38 It has two functions: stopping the movement of the ejection arm 41 by bringing the ejection arm 38b into contact with it, and the rotary lever 38 is also used for both functions.

Therefore, the structure is significantly simplified compared to the conventional structure in which separate pins and levers are provided for driving and stopping, respectively.

As is clear from the above explanation, according to the present invention, in the mechanism for releasing bundled grain culms in a binder, the releasing arm is supported by a lever that is loosely mounted on the same axis as the rotating body, and the pin provided on the rotating body is By using the lever to both drive and stop the release arm, the structure is significantly simpler than before, and the release arm can be operated reliably in synchronization with the binding operation. .

[Brief explanation of drawings]

1 to 3 show a bundled grain culm release mechanism according to the present invention, FIG. 1 is a plan view of a binder implementing this, FIG. 2 is a plan view of the main parts of a reaping device and a binding device, FIG. 3 is an explanatory diagram of the operation of the release mechanism. 26... Release mechanism, 32... Binding shaft,
34... Timing gear, 38... Rotating lever, 38 b... Protrusion, 39...
・Pin, 40...Link shaft, 41...
Release arm, 42... Swinging arm.

Claims (1)

[Scope of utility model registration request] A two-pronged lever is installed coaxially with a rotating body that rotates in synchronization with the binding operation, and each proximal end is connected to the free end of this lever and a support shaft that is arranged in parallel adjacent to the free end of the lever. a link mechanism which is rotatably supported, a discharge arm which is supported by the free end of the link mechanism with its tip facing the binding path of the harvested grain culm, and a discharge arm which is extended to the bifurcated part of the lever to It is protruded from the end face of the rotating body, and as the rotating body rotates, it comes into contact with one of the two prongs of the lever and drives the grain culm discharging operation of the discharging arm via the link mechanism, and after the rotating body stops, it is connected to the machine side. and a stop/driving pin that stops the grain culm discharging operation of the discharging arm by bringing the other of the two prongs of the lever, which continues to rotate under the tension of a tension spring tensioned on the lever, into contact with the other of the two prongs. Grain culm release mechanism.