JPS5951969B2 - Agricultural binding machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present 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.

This kind of agricultural tying machine, which is widely used, winds the string around the culm bundle after the tying clutch is activated, and supplies the string to the knotting building and the holder for holding the string end. The string is passed through the needle provided on the opposite side of the holder, that is, the string insertion hole formed at the tip, and the string is always held, and when the binding clutch is activated, the string is passed across the binding path and the above-mentioned string winding and string supply are carried out. After the binding is completed, the needle is provided so as to cross the binding path and return to the original position.

An object of the present invention is to provide a novel string winding and supplying means in place of the above-mentioned needle, to be compact and lightweight, and to improve the operation of the above-mentioned string winding and supplying means. Our aim is to provide an agricultural binding machine that ensures reliability.

Regarding the illustrated embodiment, the configuration of the agricultural binding machine according to the present invention will be explained. As shown in FIG. In a waste straw processing case 2 to which waste straw after threshing is supplied, the waste straw cutter 〇 is installed with the waste straw cutter 〇 arranged below and a binding machine B arranged 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 〇 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, each shutter 11.13 is in the position shown by the solid line, the straw supply port 10 is closed, and the straw supply port 12 is opened.
Waste straw is supplied to the bundling machine B and bundling is performed, and 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 is opened, the straw supply port 12 is closed, and the waste straw is supplied to the waste straw cutter C so that the waste straw is shredded.

The bundling machine B is capable of adjusting its displacement from side to side by moving the rail 3a on the support pipe 4, thereby making it possible to change and adjust the bundling position according to the length of the waste 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 above-mentioned binding passage 5. It is configured with a case lid 22 that is fixed to the case body 21 and closes the opening on the side facing 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 cases 21 and 22, one end is attached to 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.

In order to push the husks (waste straw) into the bundling passage 5, a packer is provided as in a conventional bundling machine, but in the case shown, the packer is a main part placed on the outer surface of the case lid 22. It is composed of a packer 27A and an auxiliary packer 27B arranged on the outer surface of the case body 21.

The main packer 27A has one end pivoted at a rotation support arm 29 whose pivot shaft 28 is one of the connecting 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 brat 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 constantly driven by the input shaft 24 by meshing with the gear 36 fitted to the main packer 27A, so that the tip of the main packer 27A is rotated along the trajectory C1 shown in FIG. It is constantly driven so that

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

A door 38 is provided on the outer surface of the case lid 22 in order to receive the husks (husks) at the end of the binding passage 5.

In the illustrated case, this 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 the fixture 40 so that the amount of door protrusion in the direction of the binding passage 5 can be changed. It is attached to arm 39.

On the clutch shaft 26, a clutch gear 41 meshed with the gear 36 on the input shaft 24 is loosely fitted. A sense actuated binding clutch 42 is provided as is customary.

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.

A bill 43 for tying a tying cord and a holder 44 for holding the end of the cord are arranged such that the bill 43 is placed on the upstream side in the culm flow direction and the holder 44 is placed on the downstream side in the same direction, as in the conventional binding machine. They are arranged and arranged side by side, respectively.

These buildings 43 and holders 44 are
As shown for the building 43 in the figure, drive shafts 43b, 4 are supported by a support provided on the deck 23, and have small diameter bevel gears 43a, 44a at their base ends, as in conventional binding machines.
4b (The drive shaft 43b is integral with the building body, and the drive shaft 44b is spline-fitted into 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 bevel gears 43a and 44a to drive the building 43 and 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.

In order to discharge the bundled husks and bundles, a discharge arm is provided in the same way as in the conventional sewage machine.

In the illustrated case, two discharge arms 46A and 46B are provided on both sides of the fuselage case portion 21-23, and a connecting pipe 47 connecting the discharge arms 46A and 46B on both sides is connected to the deck 23. , a rotation fulcrum 49a at both ends,
It is supported through a connecting frame 49 having 49b.

A discharge crank 50 is mounted on the clutch shaft 26 outside the case 21.
The discharge arm 46A on one side is pivotally connected 51 to the discharge crank 50, and the end of the connecting pipe 47 is attached to the rotary tube 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. The rotation of the clutch shaft 26 is transmitted to the discharge crank 50.

As described above, the release crank 50 is driven by the clutch shaft 26 when the clutch shaft 2601 rotates, and moves the release arms 46A, 46B such that the tip of the release arm 46A is displaced along the rotation trajectory C2 shown in FIG. Then, rotate the bundle release.

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 and release arm 46A, 46B.

A tying clutch 42 is also provided, but the needles provided in conventional tying machines are no longer provided.

In place of the conventional needle, a string supply arm 55 as described below is provided.

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. One end of the drive arm 61 is pivoted 60 to the string supply crank 59, and the other end of the drive arm 61 is connected to the rotation support arm 57 by a pin 62. They are pivotally connected so that the string supply arm 55 can be driven when the clutch shaft 26 rotates.

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 reduce the vertical width 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 of the arms 55 and 57, 61.
By appropriately setting the length, etc., the tip of the above-mentioned string supply actuator 64 moves to the standby position P along the trajectory C3 shown in FIG. 2 while the clutch shaft 26 rotates once.

First, cross the binding passage 5 in the other direction to reach the central point position P.
1, then crosses the binding path 5 in the opposite direction, passes the building 43 and the holder 44 position, reaches the other dead center position P2 slightly past the 1 holder 44 position, and then again It is assumed that it is driven to return to the standby position Po.

As will be described later, while the string supply actuator 64 at the tip thereof moves from the first dead center position P1 to the other dead center position P2, the string R is held at the tip by the holder 44. In the middle, the string R is received by the string guide groove 64b of the string supply actuator 64 and is rotated without being engaged, but even if the string supply arm 55 changes its direction due to the rotational displacement, In order to prevent the relative posture of the string supply actuator 64 at the tip end or its string guide groove 64b with respect to the string R from being changed, the following means are provided according to the present invention.

That is, as clearly shown in FIG. 3, on the supply arm support shaft 56 is a sprocket wheel 6 which is fixedly connected to the deck 23 by a connecting member 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 chain wheel 67, so that the proximal end is attached to the pin 58. The fixed string supply arm 55 is rotated relative to the rotational support arm 57, thereby changing the angle between the rotational support arm 57 and the string supply arm 55, and the back surface of the string supply actuator 64 is rotated. The string guide groove 64b is designed so that it always follows 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.
A string guide 70 (FIG. 5) for directing the tip of the string R toward the building 43 and the holder 44 is provided at the front of the tying device 3, as in the conventional tying 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 direction of flow of the culm (hull) and a second string guide 72 located on the downstream side. As shown in FIG. 7, when the first string guide 71 comes into contact with the string R from the opposite side of the binding passage 5, the first string guide 71 is connected to the string on the proximal end side of the first string guide 71. 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.
72 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. It is equipped with

The first and second string guides 71 and 72 are arranged such 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.
A clutch arm 78 is supported by the clutch arm 78.
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 75 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. When the clutch pin 78a is disengaged, the clutch pin 78b on the clutch arm 78 engages the clutch gear 41 with the engaging portion 41b under the action of the spring 79, thereby being engaged and rotating the clutch shaft 26.

Then, as the rotation of the latch shaft 26 progresses and the roller 82 falls into the cam groove 81a formed in the cam plate 81 above it, the rotation arm 80 and the clutch actuation 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 pawl 78a engages with the regulating protrusion 74b. Then, the binding clutch 42 is disengaged.

In FIG. 4), 87 is a reversal prevention plate that is pivotally supported 89 on a bracket 88 on the inner surface of the case lid 22.
The clutch shaft 26 is engaged with the engagement stepped portion by the action of a spring 90 to prevent the clutch shaft 26 from rotating in reverse.

Hereinafter, 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 shutters 11 and 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 same grade R portion forms a loop, and the waste straw is collected at the front of the door 38, and on the shutter 13 side, the string R is moved along the shutter 13 surface, and the The string R came into contact with the second string guide 72 on the downstream side of the first string guide 71, and as described above, the string R was kept almost parallel to the binding path 5 between the two sets of guides 71 and 72. It will be done.

As shown in FIG. 8a, when a set amount of waste straw is collected in the bundling passage 5, the bundling clutch 72 is engaged when the bundle pressure is sensed by 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 string feeding 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 guide 71, 72 position between the two sets of guides 71, 72 on the third, and the eighth In the figure, 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 sets of guides 71 and 72, the string R between them is one.
The actuator 64 is set so that it climbs up relatively over the actuator 64 and reaches 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 164 reaches the position shown in FIG. 8C from the dead center position in FIG. , when the string supply actuator 64 passes between the dual guides 71 and 72, the middle of the string R enters the string guide groove 64b of the actuator 64, and the string R passes into the string supply actuator 64 in the length direction of the string R. is grasped in a slidable state, and the string supply arm 55 is moved against the string R by the string supply actuator 64 at its tip.
engage with it.

Therefore, as shown in FIG. 8C, the middle part of the string R is disengaged from 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.
While the string supply operator 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) of the tip of the string supplying actuator 64 is such that the string supplying actuator 64 passes under the building 43 and doubles the string R to the string guide 70 as shown in FIG. 8d. The string R is supplied to the building 43 while being guided, and then the string R is 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 until it reaches .

When the state shown in FIG. 8e is reached, the teeth 453 of the drive bevel gear 45 on the clutch shaft 26 reach the meshing position with the small diameter bevel gears 431a and 44a of the bill 43 and holder 44, and As shown in Figure 8e and f, Building 4
3 is driven to knot the string R, and the holder 44 is driven to hold the string R and knot the string R.
d, the string R is cut between the node and the holding point.

The string supply arm 55 returns from the dead center position of FIG. 8e to the standby position as shown in FIG. It is removed from child 64.

Thereafter, the string supply arm 55 returns to the standby position shown in FIG. 5 and is stopped when the clutch shaft 260 stops rotating.After the knotting is completed, the door 38 is rotated by the release rotation of the release arms 46A and 46B. The tied bundle is extruded and released.

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 both ends of the groove 64b on the back surface of the actuator 64 as shown in FIG. e
As shown in FIG.
Since only the end of the string R to be used for the next binding is held, the double binding of the string R by the holder 44 is reliably prevented.

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.

As shown in FIG. 2, the movement locus C3 of the string supply actuator 64 is directed as far as possible toward the inside of the case 21 (opposite the binding passage 5) from the building 43 and holder 44 positions while the actuator 64 is moving to feed the string. It is set so that it does not protrude in the direction (direction), moves the minimum distance within the limit necessary for supplying the string, and so that consumption of the string R is kept to a minimum.

The surface S1 of the case 21 and the surface S2 of the nodule cover 69, which face the binding passage 5, allow the culm (hull) to
It is configured as a guide surface that guides together with the other shutter 13, and the guide surface S1. S2 provides a culm guide surface having a large width in the length direction of the culm.

As is clear from the above explanation, the agricultural tying machine of the present invention is capable of wrapping the string R held at the end of the string in the holder 44 around the culm bundle, and wrapping the string R held in the holder 44 and the building 43 and the holder 4.
4 by a string supply arm 55 that moves reciprocally only during the binding operation and once engages with the middle of the string at its tip 64 to move the string R, and this string supply arm In the support drive mechanism of 55, posture changing means 66, 67, 68 are provided for changing the posture of the string supply arm 55 so that the arm 55 always forms a constant angle with the movement locus C3 of the distal end portion 64 while the arm 55 is moving. It has the following advantages:

That is, in the agricultural binding machine of the present invention, instead of the conventional needle, the above-mentioned string supply arm 55 is used to wind the string around the culm bundle and to supply the string to the building 43 and the holder 44. Therefore, unlike the needle, the string winding and supplying means can be installed on the building and holder side, and the entire binding mechanism can be installed on one side of the binding passage. This provides an extremely compact and lightweight binding machine.

The agricultural tying machine of the present invention exhibits the above-mentioned advantages such that the end portion 64 for engaging the string in the string supply arm 55 is always moved at a constant angle with the movement trajectory C3. Since the figure shows that the tip 6
The state of engagement with the string No. 4 can be maintained in an optimal state where the string does not come off unexpectedly during the string supply operation, and the string supply arm reliably performs the required string winding and supply operations; It has become.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway schematic side view showing the main parts of a combine harvester equipped with an embodiment of the present invention, Fig. 2 is a plan view of the embodiment, and Fig. 3 is a partially expanded 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. The perspective view, Figure 7a and 1) are respectively
A perspective view and a rear view of only the main parts of the same embodiment, Fig. 8a
, b, C9d, 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, 13 ... Shutter, 26 ...
...Clutch shaft, 27A, 27B... Packer, 38... Door, 72... Binding clutch, 73... Building, 11... ... Holder, 46A, 46B ... Release arm, 55.
...String supply arm, 56...Arm fulcrum shaft, 57...Rotation support arm, 58...
・Pin, 59... String supply crank, 61...
... Drive arm, 64 ... String supply operator, 6
5...Connection tool, 66.67...Sprocket wheel, 68...Chain, 71,7
2... String guide.

Claims (1)

[Claims] 1 The string end held in the holder is moved back and forth only when the tying is activated, wrapping the string around the culm bundle and supplying it to the building and holder. The string supply arm is configured to perform this operation by a moving string supply arm, and in the supporting drive mechanism of the string supply arm, the string supply arm is configured such that it always forms a constant angle with the movement locus of the tip of the arm while the arm is moving. An agricultural binding machine characterized by being provided with a posture changing means for changing the posture.