JPS6038343Y2 - Agricultural binding machine - Google Patents

Description

[Detailed description of the invention] This invention relates to an agricultural binding machine used for binding waste straw after threshing in a combine harvester, or for binding husks after reaping in a binder.

A conventional agricultural binding machine has a binding passage that passes between two overhanging case parts (two case parts corresponding to both legs of the portal) located opposite each other in a portal-shaped spinning case. The binding passage is made by extending the connecting case part (the case part corresponding to the crossbeam at the top of the portal) that connects the above-mentioned two overhanging case parts so that the grain culm does not hit the joint case part and prevent the grain from passing through the case part. The culm is formed so that it passes only through positions that are avoided to the side.

The discharge arm that projects and rotates into the bundling passage and discharges the culm bundle is supported by one of the two overhang case sections described above.

Therefore, the release arms should be spaced 1 apart along the length of the culm.
When attempting to eject the shell culm bundles in an orderly manner, if the distance between the two ejecting arms is set to be large, it becomes necessary to increase the amount of overhang of one of the overhanging case parts that supports the ejecting arms. Since the vertical part of the bundling case as a whole becomes large, there is a restriction in increasing the distance between the two discharge arms for more orderly discharge to the east.

The purpose of this invention is to provide a pair of release arms at large intervals in the length direction of the culm bundle without being restricted by the binding case, and to improve the orderly release of bundles. The object of the present invention is to provide a new agricultural binding machine that has a high release property.

Regarding the illustrated embodiment, the configuration of the agricultural binding machine according to this invention will be explained. As shown in FIG. In a waste straw processing case 2 to which waste straw after threshing is supplied, a waste straw cutter C is installed, with the waste straw cutter C disposed below and the binding machine B disposed above.

The bundling machine B has a U-shaped rail 3a with an open bottom end provided at both ends of the upper part of a support frame 3 attached to the top surface of the bundling machine B, and a pair of front and rear support pipes 4 that span between both side walls of the waste straw processing case 2.
It is supported in a suspended manner by being placed on the waste straw processing case 2, and is tilted rearward and downward at an appropriate angle, with its lower surface serving as a binding passage 5, and is installed in the waste straw processing case 2.

The straw cutter C has a pair of parallel cutter shafts 6 and 7.
It is configured as a disk cutter equipped with cutter disks 8 and 9 for a plurality of sheets on the top.

Inside the waste straw processing case 2, there is a first shutter 11 that selectively opens and closes the straw supply port 10 to the waste straw cutter 〇, and a first shutter 11 that selectively opens and closes the straw supply port 10 to the waste straw cutter 〇, and a straw feed port 12 to the binding machine B or its binding passage 5. A second shutter 13 that opens and closes is provided so as to be rotatably supported around each fulcrum shaft 11a, 13a.

The fulcrum shaft 11a to which the first shutter 11 is attached is
It is supported by a fixed support tube 14 and is also fixed to an arm 16 which is rotatably displaced by an operating cable 15 operated from the combine operator's seat, and is vertically attached to the arm 16 and the second shutter 13. The arms 13b are interlocked and connected by an interlocking rod 17 having a long hole at one end.

As described above, when the arm 16 is placed in the position shown by the solid line, each shutter 11.13 is in the position shown by the solid line, the straw supply port 10 is closed, the straw supply port 12 is opened, and the straw is discharged to the binding machine B. is supplied and the binding is carried out,
Conversely, when the arm 16 is rotated to the position shown by the chain line and each shutter 11.13 is rotated to the position shown by the chain line, the straw supply port 10 is opened, the straw supply port 12 is closed, and the straw cutter C is opened. Straw is supplied to
It is designed to shred the waste straw.

The binding machine B is capable of adjusting its displacement left and right by moving the rail 3a on the support pipe 4, thereby making it possible to change and adjust the binding position according to the length of the straw.

Hereinafter, the specific structure of the illustrated binding machine B, only the outline of which is shown in FIG. 1, will be explained with reference to FIG. 2 and subsequent figures.

As shown in FIGS. 2-5, the illustrated binding machine B is provided with a binding case only on one side (the upper side in FIG. 1) of the binding passage 5, and the binding case is connected to the case body 21. It is configured with a case lid 22 that is fixed to the case body 21 and closes an opening on one side of the body 21, and a deck 23 is fixed to the binding case 21.22 on the outer surface of the case lid 22. It is installed.

Inside the binding case 21, 22, one end is inserted into the case body 21.
An input shaft 24 facing outside, a packer shaft 25 having one end facing outside the case lid 22, and a clutch shaft having one end facing outside the case body 21 and the other end facing outside the deck 23. 26 and a door shaft 27 whose one end faces outside the case lid 22 are parallel to each other, and as shown in FIG. They are arranged at intervals and are rotatable.

As in the conventional binding machine, backers 27A and 27B are used to push the straw into the binding passage 5, and a door 38 is used to receive the straw at the end of the binding passage 5. However, discharge arms 46A and 46B are provided, respectively, for discharging the bundled bundles of husks.

In addition, a bill 43 for tying the tying cord and a holder 44 for holding the end of the cord are placed on the deck 23 in the illustrated case, and the bill 43 is tied in the culm flow direction as in the conventional tying machine. A holder 44 is provided on the upstream side, and a holder 44 is provided on the downstream side in the same direction so as to be juxtaposed.

Furthermore, as shown in FIG. 3.4, a clutch gear 41 is loosely fitted onto the clutch shaft 26 and meshed with the gear 36 on the input shaft 24.
A binding clutch 42 is provided between the clutch shaft 26 and the clutch shaft 26 as usual, and is engaged by sensing the grain pressure of the door 38 described above.

The specific structure of the illustrated binding clutch 42 will be explained later, but
In any case, the clutch shaft 26 is intermittently driven one rotation by the operation of the binding clutch 42, as in the conventional binding machine.

As described above, the binding cases 21 and 22 are provided only on one side (the upper side in the case shown) of the binding passage 5, whereas the pair of release arms 46A and 4 described above are provided.
6B is particularly arranged so as to sandwich the binding case 21, 22 and the deck 23 on one side thereof, and the connecting pipe 47 connecting the release arms 46A and 46B on both sides is
The deck 23 is supported via a connecting frame 49 having pivot points 49a and 49b at both ends.

A discharge crank 50 is loosely fitted onto the clutch shaft 26 outside the case body 21, and the discharge arm 46A on one side is
It is pivotally connected 51 to the discharge crank 50, and the end of the connecting pipe 47 is attached to a rotating cylinder 52 at the base end of the discharge arm 46A.

A crank plate 53 is provided fixed to the clutch shaft 26, and the crank plate 53 and the discharge crank 50 are connected by a pin 53a so that the rotation of the clutch shaft 26 is transmitted to the discharge crank 50. being done.

As described above, the discharge crank 50 is driven by the clutch shaft 26 during one rotation of the clutch shaft 26, and displaces the discharge arms 46A, 46B so that the tip of the discharge arm 46A moves along the rotation trajectory C2 shown in FIG. Rotate the bundle to release it.

Below, the configuration of other parts of the illustrated binding machine B will be explained. First, the packers 27A and 27B described above are arranged in the case shown in the figure, with a main packer 27A disposed on the outer surface of the case lid 22 and a main packer 27A disposed on the outer surface of the case body 21. It is also configured with an auxiliary packer 27B.

The main packer 27A has one end pivoted 30 on a rotation support arm 29 whose pivot shaft 28 is one of the interlocking rods connecting the case body 21 and the case lid 22, and is fixed to the packer shaft 25. It is pivotally connected 32 in the middle to a packer crank 31 provided in the same manner.

The auxiliary packer 27B is fixed 34 at its proximal end to a bracket 33 (FIG. 2) provided on the main packer 27A.

The packer shaft 25 connects the gear 35 fitted thereto to the input shaft 2.
The main packer 27A is always driven by the input shaft 24 by meshing with the gear 36 fitted to the gear 36, which causes the tip of the main packer 27A to rotate along the trajectory C□ shown in FIG. It is constantly driven so that it is displaced.

Furthermore, since the auxiliary packer 27B is fixed to the main packer 27A, it is driven in the same manner as the main packer 27A.

The door 38 described above is provided on the outer surface of the case lid 22, and in the case shown in the figure, the door 38 is a door support arm 39 fixed to the door shaft 27, and is provided with a plurality of insertion holes 39a for fixing devices 40 for bundling. It is attached to a door support arm 39 that can change the amount of door protrusion in the direction of the passage 5.

The building 43 and holder 44 described above are shown in FIG.
3, the small-diameter bevel gear 43 is supported by a support provided on the deck 23, as in the conventional binding machine.
Drive shafts 43b and 44b having base ends a and 44a (the drive shaft 43b is integral with the building body, and the drive shaft 44b is splined to the holder body).

), but in the case shown in the figure, it is a large-diameter drive bevel gear 45 that is provided with teeth 45a only in a certain angular range, and in the middle of one rotation of the clutch shaft 26. A drive bevel gear 45 that meshes with the small diameter gears 43 a and 44 a to drive the building 43 and the holder 44 is fixedly installed directly on the clutch shaft 26 .

The building 43 is driven in the middle of one rotation of the clutch shaft 26.
The function of the holder 44 itself is the same as that of the conventional one.

As described above, the illustrated bundling machine B includes a packer 27 that operates or functions in the same manner as the corresponding means in a conventional bundling machine.
A, 27B, door 38, building 43, holder 44, discharge arms 46A, 46B, and binding clutch 42 are provided, but the needle provided in the conventional binding machine is not provided, and a needle equivalent to the needle is provided. A string supply arm 55 as described below is provided as a string supply means.

That is, the deck 2 is rotatably supported by the deck 23.
A rotary support arm 57 whose base end is attached to a supply arm fulcrum shaft 56 that protrudes outward from the deck 23 is provided on the outer surface of the deck 23. The body 55a is rotatably supported by a support cylinder 57a fixed to the tip of the rotation support arm 57, and is fitted and fixed to a pin 58, so that it can freely rotate together with the rotation support arm 57 around the supply arm fulcrum shaft 56. and supported so as to be rotatable relative to the rotational support arm 57 around the pin 58,
It is provided along the outer surface of the deck 23 and outside the outer surface.

A string supply crank 59 is fitted to the end of the clutch shaft 26 that extends onto the outer surface of the deck 23, and a drive arm 61 has one end pivoted 60 to the string supply crank 59.
The other end is pivotally connected to the middle of the rotation support arm 57 by a pin 62, and when the clutch shaft 26 rotates, the string supply arm 55
This is done so that the drive can be obtained.

In the illustrated case, the string supply arm 55 is divided into two parts 55b and 55c halfway in the length direction, and a connecting tool 6 is inserted between the two parts 55b and 55c.
Connected by 3.

A string supply actuator 64 as described below is fixed to the tip of the string supply arm 55.

That is, as shown in FIG. 6, the string supply actuator 64 has a slope 64a on the tip end formed in the shape of a closed end, which slopes so as to make the vertical portion smaller on the tip side. A string guide groove 64b extending from one side wall surface to the entire back wall surface is formed, and the string guide groove 64b is sequentially provided on the back wall surface obliquely so as to lower the height position of the groove 64b.

The string supply arm 55 supported as described above and driven as described above is connected to each arm 55. 57. 6
By appropriately setting the length etc., the clutch shaft 26 can be
While rotating, the tip of the string supply actuator 64 moves along the trajectory C3 shown in FIG. 2 to the standby position P.

First, cross the binding passage 5 in the other direction and reach the first dead center position P.
1, then crosses the binding passage 5 in the opposite direction, passes the building 43 and the holder 44 position, reaches the pore point position P2 slightly past the holder 44 position, and then returns to the standby position P.

It is supposed to be driven so that it returns to

As will be described later, while the string supply actuator 64 at the tip of the string supply arm 55 moves from approximately the first dead center position P1 to the pore point position P2, the string R whose tip is held by the holder 44 is While the string R is received in the string guide groove 64b of the string supply actuator 64, the string R is rotated and displaced while being grasped. However, even if the string supply arm 55 changes its direction due to rotational displacement, In order to prevent the relative attitude of the supply actuator 64 or its string guide groove 64b with respect to the string R from being changed, the following means are provided.

That is, as clearly shown in FIG. 3, on the supply arm fulcrum shaft 56 is a sprocket wheel 6 which is fixedly connected to the deck 23 by a coupling 65 and is restrained from rotating.
6, and another sprocket wheel 67 is fixedly installed on the pin 58 at the proximal end of the string supply arm 55, and both of these sprocket wheels 66, 67
In between, a chain 68 having a length adjustment part 68a is wound.

Therefore, the rotation support arm 57 is driven by the drive arm 61.
When the string supply arm 55 is rotated, the chain 68 is driven by the rotation of the rotation support arm 57, and the pin 58 is rotated together with the sprocket wheel 67, so that the base end is fixed to the pin 58. The string supply arm 55 is rotated relative to the rotation support arm 57, thereby changing the angle between the rotation support arm 57 and the cord supply arm 55, and the edge of the back surface of the cord supply actuator 64 is rotated. The guide groove 64b portion is designed to always substantially follow the trajectory C3.

Nodule binding passage 5 with building 43 and holder 44
On the side, there is a knot cover 6 as in the conventional tying machine.
9 is provided, and the building 4 is provided on the inner side of this knot cover 69.
At the front of 3, a string guide 70 (FIG. 5) is provided for directing the tip of the string R toward the building 43 and holder 44, as in the conventional binding machine.

On the other hand, in the illustrated case, the second shutter 13
(FIG. 1) Above, the following string guide means is provided.

That is, as shown in FIG. 5, the string guide means includes a first string guide 71 located on the upstream side in the grain culm (waste straw) flow direction and a second string guide 72 located on the downstream side. , as shown in FIG. Guide portion 71a whose R portion is always made substantially parallel to the binding path 5
The second string guide 72 is connected to the binding passage 5.
When the string R contacts from the side, the first and second string guides 71.
It is provided with a guide portion 72a that makes the string R portion between 72 substantially parallel to the binding path 5, and two leg portions 72b extending in an expanded shape from both ends of the guide portion 72a toward the binding path 5. We are prepared.

The first and second string guides 71 and 72 are arranged so that when viewed in the direction along the binding path 5, the guides 71 and 72 form a closed string guiding channel ch as shown in FIG. The arrangement is provided on the shutter 13.

Other configurations of the string supply arm 55 and other parts related thereto will be described later along with their operation.

The above-mentioned binding clutch 42 is constructed in the same manner as the known one and operates in the same manner, so only an outline thereof will be explained. In FIGS. The actuating arm has one end that engages with a pin 75a on the actuating arm 75 on the door shaft 27 through a long hole 74a, and has a regulating protrusion 74b at the other end.

Further, a pin 77 implanted in a disc 76 fixed to the clutch shaft 26 has a claw 78a that engages with the regulating protrusion 74b.
The clutch arm 78 is supported,
A latch pin 78b is attached to the arm 78 so that it can be engaged with an engaging portion 41b formed in a circumferential portion of the clutch gear 41 by the action of a spring 79.

The rotating arm 80 loosely supported by the packer shaft 25 includes:
A roller 82 is pivotally supported in sliding contact with a cam plate 81 fixed to the clutch shaft 26, and a clutch spring 85 is disposed between the clutch operating arm 74 and the rotating arm 80.

In the illustrated bundling clutch 42, when a set amount of husks (waste straw) are collected in the bundling passage 5 and the door 38 senses the pressure, the clutch actuating arm 74 is rotated by a slight amount, and the regulating protrusion 74b is engaged. 78a, the clutch pin 78b on the clutch arm 78 engages the clutch gear 41 with the retaining portion 41b under the action of the spring 79, thereby being engaged and rotating the clutch shaft 26.

Then, as the rotation of the clutch shaft 26 progresses and the roller 82 falls into the cam groove 81a formed in the cam plate 81 thereon, the rotating arm 80 and the clutch actuating arm 74
is rotated in the door 38 opening direction, and then when the roller 82 is pulled out from the cam groove 81a, both arms 80.74 are rotated in the door 38 closing direction, and then the claw 78a engages with the regulating protrusion 74b. Then, the binding clutch 42 is disengaged.

In FIG. 4, reference numeral 87 denotes a reverse rotation prevention plate that is pivotally supported 89 on a bracket 88 on the inner surface of the case lid 22, and is engaged with the engagement step of the disc 76 by the action of a spring 90.
6 to prevent reversal.

The operation of the illustrated tying machine B, especially the operation of its string supply arm 55, when tying waste straw is performed with the shutter 11.13 in the position shown by the solid line in FIG. 1 will be explained with reference to FIGS. 5 and 8. , I will explain it while supplementing the explanation of some of the configurations.

At the start of work and after one cycle of tying operation is completed, the tying string R is guided by the first string guide 71 on the shutter 13 and the string guide 70 at the knot, as shown in FIG. 43 and the end of the string is held by the holder 44, and the string supply arm 55 has the tip of the string supply actuator 64 at the above-mentioned position P.

The door 38 is in a standby position located at , and the door 38 is in a position to close the end of the binding passage 5.

From the state shown in FIG. 5, as the straw is fed into the bundling passage 5 with the help of the packers 27A and 27B, the string R portion crossing the bundling passage 5 moves toward the door 38. As shown in FIG. 8a, the long portions of the same edge form a loop shape, and the waste straw is collected at the front side of the door 38, and on the shutter 13 side, the string R is moved in a direction along the surface of the shutter 13, The string R comes into contact with the second string guide 72 downstream of the first string guide 71, and as described above, the string R is maintained approximately parallel to the binding path 5 between the pair of guides 71 and 72. dripping

As shown in FIG. 8a, when a set amount of waste straw is collected in the bundling passage 5, the bundling clutch 42 is engaged by sensing the purge force of the door 38.

As a result of this activation of the binding clutch 42, the string supply arm 55 is moved so that the tip of the string supply actuator 64 is at the position P as described above.

The tip of the string supply actuator 64 is moved across the binding path 5 in the direction of the shutter 13 from the standby position shown in FIG.

The dead center position P1 of the string supply actuator 64 is at the shutter 1
It is set at a position slightly past the guides 71 and 72 between the guides 71 and 72 on the upper part of the guide 71 and 72, and the position of the string R between the string supply actuator 64 and the guides 71 and 72 is set at a position slightly past the guides 71 and 72. In FIG. 8, the relative positional relationship in the direction perpendicular to the plane of the paper is such that when the string supply actuator 64 passes between the two edge guides 71 and 72, the string R therebetween moves along the slope 64a of the string feed actuator 64.
It is set so that it climbs up relative to the top and reaches beyond the actuator 64 and behind it.

Therefore, as described above, while the string supply arm 55 crosses the binding path 5 in the opposite direction and the string supply actuator 64 reaches the position shown in FIG. 8C from the dead center position in FIG. , when the string supply actuator 64 passes between the both edge guides 71 and 72, the string R halfway reaches the string guide groove 6 of the actuator 64.
4b, and the string R is grabbed by the string supply operator 64 in a state where it can freely slide in the length direction of the string R.

Therefore, as shown in FIG. 8C, the middle part of the string R comes off the second string guide 72, crosses the binding passage 5, and is brought to the knot side, and then the string supply arm 55 further rotates, and the string While the supply actuator 64 moves toward the building 43 and the holder 44 and reaches the position shown in FIG. 8d, the string R is wound around the collected bundle.

The trajectory C3 (FIG. 2) at the tip of the string supply actuator 64 is such that the string feed actuator 64 passes under the lower surface of the building 43 and doubles the string to the string guide 70 as shown in FIG. 8d. The string R is supplied to the building 43 with R being guided, and then as shown in FIG.
As shown in FIG.
The string R is set so that it passes through the lower surface of the holder 44 and is supplied to the holder 44 before reaching the holder 44.

When the state shown in FIG. 8e is reached, the teeth 45a of the drive bevel gear 45 on the clutch shaft 26 reach the engagement position with the small diameter bevel gears 43a and 44a of the bill 43 and holder 44, and the As shown in FIGS. 8e and 8f, the bill 43 is driven to knot the string R, and the holder 44 is driven to hold the string R, and the knife 44d connects the string R between the knotting point and the holding point. The cutting is done at

The string supply arm 55 returns from the well-child point position in FIG. 8e to the standby position as shown in FIG. Removed from 64.

Thereafter, the string supply arm 55 returns to the standby position shown in FIG. 5 and is stopped by stopping the rotation of the clutch shaft 26. After the knotting is completed, the door 38 is rotated by the release rotation of the release arms 46A and 46B. The bound bundle is pushed out and released while

In addition, in the case shown in the figure, the door 3 is
The opening position of the door 8 is set at a position where the door 38 is sunk into the nodule cover 69 so that the bundle can be released smoothly.

The string guide groove 64b of the string supply actuator 64 is provided in an inclined manner as described above, and there is a difference in height between the two ends of the string feed actuator 64 on the back surface of the actuator 64 as shown in FIG. As shown in e, the holder 44 faces within the range of the height difference within the loop of the string R held by the string supply operator 64, and holds only the end of the string R that will be used for the next binding. , the holder 44 reliably prevents the string R from being caught twice.

Further, the detachment of the string R from the string supply actuator 64 from the state shown in FIG.
This is extremely easy because the height difference is sequentially given between the position where the string R is engaged with the holder 44 and the position where the string R is held with the holder 44.

According to this invention, a pair of discharge arms 46A and 46B, which are arranged to sandwich the binding case 21.22 and supported by the binding case 21.22, are used to release the bundle of culms after binding. Binding case 21.
The culm bundle acts on the culm bundle at two positions with a larger interval than the vertical part of the 22, and the culm bundle is pushed out at these two places with a larger interval.
．． Since the outer surface (lower surface in the case shown) of 22 guides the extruded culm bundle with its entire length, the culm bundle is ejected in a very orderly manner.

As is clear from the above description, the agricultural binding machine of this invention has the binding cases 21 and 22 located only on one side of the binding passage 5, and the culm bundles are protruded and rotated into the binding passage 5. A pair of release arms 46A and 46B are arranged to sandwich the binding case 21 and 22.
1.22 and provides the following effects.

In other words, since the binding case is provided only on one side of the binding passage, and there is no part of the binding case that impedes the passage of the grain culm passing through the binding passage, the culm can be moved along the length direction of the grain culm. The vertical part of the binding case can be straddled and passed through the binding passage, and a pair of release arms for pushing out the bundled culm can be rotated to project from both sides of the vertical part of the binding case into the binding passage. This causes the scales to act on the shell culm bundle.

Therefore, this invention avoids the restrictions imposed by the binding case by setting the binding case as described above, and then connects the pair of release arms 46.
A, 46B are arranged so as to sandwich the binding case, and both ejection arms 46A and 46B provided in this way,
46B acts on the culm bundle at two positions spaced apart from each other in the longitudinal direction of the bundle case, and pushes the culm bundle at two places with a large distance to release the culm bundle. Since the outer surface of the binding case facing the binding passage guides the extruded culm bundle with its entire vertical portion, the culm bundle is discharged in an extremely orderly manner.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway schematic side view showing the main parts of a combine harvester equipped with an embodiment of this invention, Fig. 2 is a plan view of the embodiment, and Fig. 3 is a partially developed longitudinal section of the embodiment. FIG. 4 is a cross-sectional view of the same embodiment, FIG. 5 is a plan view of only the main parts of the same embodiment, and FIGS. 6 a and 6 are perspective views of the main parts of the same embodiment. Figures 7 and 7 at b are respectively a perspective view and a rear view of only the main parts of the same embodiment, and Figures 8 a and b.
C. d, e, and f are plan views of only the main parts of the same embodiment for explaining the operation. B... Binding machine, R... String, 5...
... Binding passage, 21 ... Case body, 22 ...
...Case lid, 23...Deck, 26...
...Clutch shaft, 27A, 27B... Packer 38... Door, 42... Binding clutch, 43... Building, 44... ...Holder, 46A. 46B...Discharge arm, 47...Connection pipe, 49...Connection frame, 50...
...Discharge crank, 52...Rotating cylinder, 53...
... Crank plate, 53a ... Pin, 55.
...String supply arm.

Claims (1)

[Scope of utility model registration request] A binding case is provided so as to be located only on one side of the binding passage, and the culm bundle is released by projecting and rotating into the binding passage.
An agricultural binding machine characterized in that a pair of release arms are arranged to sandwich a binding case and are supported by the binding case.