JPH07112385B2 - Grain culling device - Google Patents

Description

Description: (a) Field of Industrial Application The present invention relates to a grain-culm bundling device which is arranged in a straw conveying passage of a combine to bind grain grains and discharge the grains.

(B) Conventional technology Conventionally, in a grain culm bundling device, a technology in which the shape of the mission case is U-shaped in a side view has been disclosed in Japanese Utility Model Laid-Open No. 58-1675.
The technology as disclosed in Japanese Patent No. 31 is known. In addition, the technology in which a rotating discharge rod is provided coaxially with the needle is a practical method.
A technique such as that of Japanese Patent No. 191136 is known. Further, a technique such as Japanese Utility Model Laid-Open No. 51-156934 is publicly known in that a groove for engaging a cord is provided at the rotating tip of the needle.

The conventional grain culm bundling device in which the shape of the mission case is U-shaped in side view is configured as shown in FIG.

That is, the entire structure was formed into a mold in a rear view, and the grain culm was passed through the inside of the mold in a long state.

Therefore, it was necessary to increase the depth of the mold, and the binding mission case M ', the lower transmission pipe 63, the chain case 60, the upper transmission pipe 61, etc. tended to become longer according to the length of the grain stem.

Then, from the united mission case M ′ side, the packer 66
The needle 64 was driven to drive the discharge rod 62 and the knotted building, the string holder, etc. in the binding frame 65 on the side of the upper transmission pipe 61. Therefore, the mission case parts are arranged vertically, and the positional relationship between the members that rotate from above and below must be precisely determined.Therefore, it is necessary to make the mission case, transmission pipe, chain case, etc. sturdy. There was.

For these reasons, the assembly cost was high, and the weight was unnecessarily heavy.

(C) Problems to be Solved by the Invention An object of the present invention is to eliminate the above-mentioned problems of the prior art. First, the mission cases that were divided into the upper and lower parts are combined into one, and the packer 3, the needle 1, and the discharge rod are collected. 2, the clutch door 7 and the like are all driven from one side of the grain culm transport passage.

As a result, only one mission case is required, and there is no need to form it into a mold when viewed from the rear, so the structure of the chain case, the transmission pipe, etc. can be omitted, and the weight is reduced and the cost is reduced. Is made possible.

Further, since the string a and the needle 1 are not engaged with each other by the string hole, this is done in the conventional grain-culm bundling device. String a
It is configured so that the work of passing the needle through the needle 1 is not necessary, and the string setting work at the start of the work is simplified.

(D) Means for Solving the Problem The object of the present invention is as described above, and the configuration for achieving the object will be described below.

A U-shaped bundling mission case M opened upward is arranged below the grain culvert passage, and a knotted building 5, a string holder 6 and a packer 3 are arranged on the U-shaped recessed portion on the hand side in the grain culm conveying direction. The U-shaped recess is used as a binding space P, and a discharge rod 2 that passes through and rotates upward in the binding space P is provided on the lower side of the U-shaped recess in the grain culm transport direction, and is arranged on the same axis as the release rod 2. A needle 1 is provided, and a V-shaped groove 1a for engaging a string a is formed at a rotating tip of the needle 1. A knot clutch is connected to the needle 1, and the needle 1 rotates downward from above toward the binding space P. The needle holder 1 into the V-shaped groove 1a of the needle 1
To the position of the nodule building 5 and the string holder 6 by engaging the middle part of the string a that holds the straw in the middle and holds the straw in the middle, and at the position where the rotation of the discharge rod 2 does not interfere with the end of the nodule. The needle 1 is moved backward until the needle 1 and the string a are once separated from each other, and the discharge rod 2 is discharged once by one rotation of the discharging rod 2, and when the rotation of the discharging rod 2 is completed, the needle 1 is V-shaped. groove
It returns to the standby position before the start of the knotting work in which 1a and the string a are engaged.

(E) Action of the Invention Since the present invention is configured as described above, the intake guide 4
The packer 3 scrapes the grain culms conveyed from the threshing device along the portions 6, 47 into the binding space P.

When a certain amount of grain culm is pushed into the binding space P, the clutch door 7 is pushed to operate the knotting clutch, and first, the needle 1 at the standby position in FIG. It rotates, and at that time, holds the string a in the V-shaped groove 1a, conveys it to the knot building 5 and the part of the string holder 6, and together with the other end of the string a previously held by the string hilder 6, the knot building 5 After the completion of the knot, the next end of the string a is held by the string holder 6 and the string end after the present knot is cut by the cutting blade of the string holder 6.

After that, the needle 1 is largely retracted to the position of 1 ', and accordingly, the discharge rod 2 starts one rotation in the direction of the arrow, and the straw bundle A in the binding space P is ejected upward, and the discharge rod 2 Stops at the standby position shown in FIG.

The needle 1 also returns to the original standby position of 1 with the end of the rotation of the discharge rod 2.

When the kneel 1 is retracted to the 1'position, the needle 1 does not pull the string a as in the conventional case, but the string a is arranged at the regular string position by the string holding devices 48a and 48b, and the discharge rod 2 is released. It is retracted to the position 1'while leaving the position where the straw bundle A can pass. Again needle 1
When is returned to the position of 1, the string a is inserted into the V-shaped groove 1a.

(F) Embodiments The objects, configurations, and operations of the present invention are as described above. Next, the configurations of the embodiments shown in the accompanying drawings will be described.

FIG. 1 is an overall perspective view of the grain culm bundling apparatus of the present invention, FIG. 2 is an overall side view of the same, FIG. 3 is a rear sectional view of a binding mission case M, and FIG. 4 is a needle, a discharging rod shaft 11 and a clutch. FIG. 5 is an enlarged rear sectional view of a portion of the shaft 12, FIG. 5 is an enlarged side sectional view of the same, FIG. 6 is a plan view of the tip of the needle 1, and FIG. 7 is a rear view of a conventional grain-culm binding device.

1 and 2, the overall structure of the grain-culm bundling device of the present invention will be described.

Straw that has been threshed by a combine-mounted threshing device passes through intake guides 46, 47 and grain culvert passages formed on the knot frame 4, and is scratched in the concave portion of the U-shaped binding mission case M. Will be involved.

It is the packer 3 that performs the scraping action of the straw. The packer 3 has its lower end pivotally supported by the driven arm 15 on the wall surface of the binding mission case M, and the middle part of the packer 3 is rotated by the packer drive crank 14 to form an elliptical shape as shown in FIG. It draws the traced track of.

Further, the knot frame 4 is configured integrally with the binding mission case M, and a knot portion formed by the knot building 5 and the string holder 6 is formed in a portion surrounded by the knot frame 4.

Further, the clutch door 7 projecting from the door shaft 9 projects into the binding space P formed in the recess of the binding mission case M. When the straw placed on the clutch door 7 is pressed by the packer 3 and gradually packed, the clutch door 7 finally rotates and the knot clutch is turned on.

Further, the discharge rod 2 and the needle 1 are arranged on the needle and the discharge rod shaft 11 on the same axis.
Before reaching 11, the clutch shaft 12 and the clutch lever shaft 13 are arranged.

Between the clutch shaft 12 and the clutch lever shaft 13, a knotting clutch device used in a conventional grain-culm binding device is constructed.

In the conventional technique, since the string a was inserted into the string hole provided in the needle 1, it did not come off from the needle 1. However, in the case of the present invention, the binding mission case M is provided only on one side. Since it has been configured, if the string a is stretched after binding, the release rod 2 cannot eject and release it.
The string a and the needle 1 can be separated.

Therefore, the string a is fixed and held between the string holding devices 48a and 48b, and the needle 1 retracts to the position 1'when the discharge rod 2 discharges, and the string a and the needle 1 The space is open.

When the clutch door 7 is turned on and the needle 1 acts as a knot, the needle 1 is rotated to the position "1" in FIG.
When it rotates and releases, it is retracted to the position 1 ', and finally the string a is engaged in the V-shaped groove 1a, and the position 1 is ready for the next knotting operation. Then, the packing by the packer 3 is awaited.

The needle 1 is equipped with a string roller 49 for improving the sliding condition with the string a. For the needle 1 to function as a knot, the knot building 5 and the string holder 6 inside the knot frame 4 are provided.
It is configured so that the string a is not torn by frictional resistance when it is rotated up to the part.

As shown in FIG. 1, the straw is scraped into the binding space P from above by the packer 3 and, after the end of the knotting action, is discharged so as to be bounced upward by the discharging rod 2.

Next, the drive structure in the binding mission case M will be described with reference to FIGS. 3, 4, and 5.

In the binding mission case M, five axes are arranged as main axes.

The input / packer shaft 10 includes a needle / release rod shaft 11, a clutch shaft 12, a clutch lever shaft 13, and a door shaft 9.
In addition, as shown in Fig. 2, chain tension rollers 45,45
A chain tension shaft 45 that pivotally supports is separately arranged.

In FIG. 3, a description will be given along the power transmission system.

The power from the prime mover is input and transmitted to the packer shaft 10 by a belt or the like.

The input / packer shaft 10 also serves as the drive shaft of the packer 3, and the packer drive crank 14 is fixed to the tip of the input / packer shaft 10 and the end of the packer driven arm 15 is supported. The middle part of the packer 3 is rotated by the packer drive crank 14 to draw a long elliptical rotation locus as a whole as shown in FIG.

A chain 22 is wound around a sprocket 16 fixed to the input / packer shaft 10, and the chain 22 is a chain tension sprocket 25 and a chain tension roller on the door shaft 9.
Power is transmitted to the loose fitting sprocket 20 on the clutch lever shaft 13 via 45. The loose fitting sprocket 20 is integrated with the loose fitting gear 30, and the loose fitting gear 30 is always meshed with the loose fitting gear 31 on the clutch shaft 12.

A clutch pin driving side 32 of the knot clutch device is projected on the loose fitting gear 31, the clutch pin driving side 32 is constantly rotating, and when the clutch door 7 is turned on, a fixed rotation is performed. By engaging the clutch pin driven side 33 of the body 34, the fixed rotating body 34 is rotated by one rotation.

In the nodule clutch device, the clutch door 7 serves as a sensor, and when it is detected by the pressing force from the straw that the amount of straw discharged from the binding space P by the clutch door 7 becomes a certain amount or more, the clutch door is detected. 7 rotates gradually and the door shaft 9
And the arm 27 rotates. By the rotation of the arm 27, the arm 28 loosely fitted on the clutch lever shaft 13 is rotated, and the integrated arm 70 is rotated.

The rotation of the arm 70 moves the clutch pin driven side 33 to a position where it is engaged with the clutch pin driving side 32, and the clutch pin driving side 32 is rotated once more to perform the nodule discharging operation. After one rotation, the clutch door 7 returns to its original position.

The rotation of the clutch pin driven side 33 rotates the fixed rotating body 34, and the power is branched from the portion of the fixed rotating body 34 to the needle 1, the knotted building 5, and the discharging rod 2 and the driving in three directions. It is.

First, in the drive path of the needle 1, the toothless gear 38 integrated with the fixed rotating body 34 is loosely fitted on the clutch lever shaft 13 by a loose fit gear 37.
Is engaged with. The loose fitting gear 37 is fixed to the clutch lever shaft 13 together with the fixed sprocket 21.
The fixed sprocket 21 transmits power to the loose fitting sprocket 17 on the input / packer shaft 10 which is a drive system for the knot building 5 and the string holder 6.

Further, the power intermittently rotated by the loose fitting gear 37 is transmitted to the clutch lever shaft 13, and is transmitted from the arm 42 on the clutch lever shaft 13 to the arm 40 via the interlocking link 41.
It is transmitted from the arm 40 to the clutch shaft 12.

The partly tooth-missing gear 38 is, as disclosed in FIGS. 5 and 6,
It is composed of a toothless portion 38a, which is lacking in half of the entire circumference, and an entire toothed portion 38b, which has teeth around the entire circumference. The toothless portion 38a allows the discharge rod 2 to move about half of the time during rotation of the needle 1. It is configured to rotate in a timely manner.

In addition, the all-toothed portion 38b allows the loosely fitted gear 37 to move to the O
It makes one revolution with N.

18 when the residual teeth of the partly tooth-missing gear 38 rotate downward in FIG.
At 0 degrees, the rotation of the fixed gear 44 for the discharge rod 2 on the opposite side is stopped by the accompanying stopper 36 and is held at the standby position of the discharge rod 2.

When the partly tooth-missing gear 38 makes one rotation, the loose fitting gear 37 becomes one.
It makes a circumferential rotation, and the rotation causes the clutch shaft 12 to reciprocate through the clutch lever shaft 13.

That is, the clutch lever shaft 13 makes one rotation and the arm 42 makes one rotation by one rotation of the loose fitting gear 37.

Since the arm 42 is made shorter than the arm 40, the arm 40 cannot make one rotation, and one rotation of the arm 42 causes the arm 40 to rotate in a fan shape of about 120 degrees. Is transmitted to the clutch shaft 12 to rotate the gear 39 fixedly mounted on the clutch shaft 12 into a fan shape of 120 degrees.

Since the needle meshed with the fixed gear 39 and the loose fitting gear 43 on the discharge rod shaft 11 are formed in a ratio of approximately 2: 1, the loose fitting gear 43 rotates about 240 degrees. Of.

The 240 degrees of rotation of the loose fitting gear 43 causes the needle and the discharge rod shaft 11 to rotate.
The needle 1 loosely fitted and supported on the upper part of the needle replaces the rotation of 240 degrees.

When the needle 1 is rotated by 240 degrees, the tooth-missing gear 38 and the fixed gear 44 are meshed with each other at the same timing, and the tooth-missing gear 38 has a 180-degree residual tooth portion in a ratio of 2: 1. The fixed gear 44 thus constructed is rotated once, and the needle 1 is moved exactly to the position 1'in FIG.
At the time of retreating to the position, the needle fixed to the fixed gear 44 and the discharge rod shaft 11 rotate once, the discharge rod 2 rotates, and the grain culm bundle A in the binding space P is flipped up and discharged. Of.

As shown in FIGS. 4 and 5, the toothless gear 38 is composed of a toothless portion 38a and all toothed portions 38b, and the portion of the toothless portion 38a is a residual tooth portion and a fixed gear 44 and 180 degrees. Only by meshing, the rotation is stopped by 180 degrees at the other toothless portion, and the stop position is held by the stopper 36.

Further, the entire tooth portion 38b is meshed with the loose fitting gear 37 over the entire circumference, and one rotation of the toothless gear 38 is transmitted to one rotation of the loose fitting gear 37.

Next, the knot building 5 and the string holder 6 are driven by the loose fitting gear 37.
One rotation of the fixed sprocket 21
3, input through the chain tension roller 45, chain tension sprocket 26, loose fit sprocket of the packer shaft 10
23 is driven. The knotted bevel gear 18 rotates once by the rotation of the loose fitting sprocket 23, and the intermittently driven bevel gear 19 of the knotted building 5 and the intermittently driven bevel gear 19 of the other string holder 6 are rotated. By rotating the knot building 5 and the string holder 6 at a timing, the string a conveyed by the needle 1 and the string end held by the string holder 6 at the time of the previous binding are taken to form a knot. Do it. After the bundling, when it is released by the release rod 2, the end portion of the present binding string is pulled off from the string holder 6, and only the end portion of the string for the next binding is left in the string holder 6.

(G) Effects of the Invention Since the present invention is configured as described above, it has the following effects.

First, unlike the conventional grain culm bundling device shown in FIG. 7, it is not necessary to arrange the bundling mission case M vertically, and by arranging the bundling mission case M only on one side of the grain culm transport passage. Since it can be configured, a strong supporting part is not required, the weight can be reduced, and the grain culm bundling device can be downsized as a whole.

Secondly, since the upper and lower transmission pipes and the chain case that connect the upper and lower binding mission cases do not exist as in the conventional case, the grain stems passing through the parts do not stay and are not caught, and straw and dust are not generated. There was no accumulation, and there was no disturbance in the posture of the grain culms that were bound together.

Thirdly, since the cord a and the needle 1 are not engaged with each other by the cord hole, the work of passing the cord a through the needle 1 which is performed in the conventional grain-culling binding device is not necessary, and the cord at the time of starting the work is eliminated. It is easy to set.

[Brief description of drawings]

FIG. 1 is an overall perspective view of the grain culm bundling apparatus of the present invention, FIG. 2 is an overall side view of the same, FIG. 3 is a rear sectional view of a binding mission case M, and FIG. 4 is a needle, a discharging rod shaft 11 and a clutch. FIG. 5 is an enlarged rear sectional view of a portion of the shaft 12, FIG. 5 is an enlarged side sectional view of the same, FIG. 6 is a plan view of the tip of the needle 1, and FIG. 7 is a rear view of a conventional grain-culm binding device. A: Straw bundle a: String M: Binding mission case 1 ... Needle 2 ... Discharge rod 3 ... Packer

Claims (1)

[Claims] 1. A U-shaped bundling mission case M having an upward opening is arranged below a grain culm passage, and a knotted building 5, a string holder 6 and a packer 3 are provided on the upper side of the U-shaped recess in the grain culm transport direction. And the U-shaped recess is used as a bundling space P. Further, on the lower side of the U-shaped recess in the grain culm transport direction, there is provided a discharge rod 2 which passes through and rotates the binding space P upward. A needle 1 is provided on the same axis as that of the needle 1, and a V-shaped groove 1a for engaging the cord a is formed at the rotating tip of the needle 1, a knot clutch is connected, and the needle 1 is connected from above to a binding space P. To the V-shaped groove 1a of the needle 1, engage the middle portion of the string a having the tip held by the string holder 6 and holding straw in the middle, The needle 1 is guided to the position of the string holder 6 and when the knot ends, the needle 1 is moved to a position where it does not interfere with the rotation of the discharge rod 2. By retracting the needle 1 and the string a, the needle 1 and the string a are once separated from each other.
And the needle 1 is returned to the standby position before the start of the knotting operation in which the V-shaped groove 1a and the string a engage with each other when the rotation of the discharging rod 2 is completed.