JPH0246659Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to the form and angle adjustment structure of a vertical weeding device.

(b) Conventional technology When harvesting a grain culm that is normally erect and has a standard height, it is necessary to use tines that are pivotally supported in an endless band that is rotatable in the vertical direction so as to be able to swing up and down. This is done using a horizontal pulling device that moves backwards in an upright state, but for lodging grain culms or long culms, the horizontal pulling device alone cannot reliably raise and split the grass. Grain culms become entangled with each other, resulting in culm tearing, culm spillage, grain shedding, etc.
Culm breakage, etc. occurred.

Therefore, when harvesting these lodging grain culms or long culms, a vertical weeding device is installed beside the grain culm introduction route in order to separate the grain culms within the grain culm introduction route from the grain culms outside the same route. However, in the conventional type, the tines, which are pivotally connected to the chain so as to be able to swing up and down, protrude upright at the lower front end of the weeding case, and are folded down and stored at the rear upper part of the weeding case, or The cover and guide body of the weed splitting device that sandwich the tines from side to side have a bulging shape toward the tips of the tines, so that the upright tines before they are folded down and stored are gradually lowered under the cover and the guide body. However, there is no one that can change the locus of movement of the tip of the tine on the grain culm engagement side while maintaining the engagement posture of the tine with respect to the grain culm in a substantially constant upright state.

In other words, Utility Model Publication No. 54-115334 and JP-A-55-
The conventional vertical weeding device seen in Publication No. 45361, etc.
Alternatively, the normal horizontal rotation pulling device shown in Japanese Utility Model Publication No. 50-34970 is designed by retracting the position of a sliding guide body that maintains the tines, which are pivotally connected to the chain so as to be able to swing up and down, in an upright state. , to change the protrusion degree of the tines from the case by tilting the tines backward in the direction opposite to the direction in which they are engaged, or to tilt the tines in the direction opposite to the direction in which they engage the grain culms from the middle to the end of the conveyance. , or a cover that sandwiches the tines from the left and right sides, and a guide body that bulges toward the tips of the tines,
The tine was designed so that it could not reach the tip of the grain culm, and the grain culm could be easily separated from the tine.

(c) Problems to be solved by the invention Since the conventional device had the structure described above, when the sliding guide plate that maintains the undulating tines in an upright state is adjusted backward from the normal state, individual The tines are tilted backwards in the opposite direction to the grain culm engagement direction, or the erecting tines before lodging are lowered under the cover and guide body by the bulging cover and guide body, so that entanglement of grain culms is prevented. The tines do not work to the tip of the grain culm, or the grain culm easily comes off the tines, making it impossible to reliably raise and divide the weeds.
Even though the tines reached the tip or near the tip of the culm of the intertwined lodging grain culms,
The tines easily come off from the grain culm, the tines do not work on the grain culm, the weeding that should be done is not done, and the machine moves forward with the weeds entangled, resulting in culm breakage, culm tearing, culm spillage, etc. This caused grain shedding, etc.

The present invention has been devised to solve the above-mentioned problems and drawbacks of the conventional technology.

(d) Means for Solving the Problems In order to achieve the above object, the present invention provides a vertical weeding device installed beside the grain culm introduction route with the following structure.

That is, the passive side sprocket 20 installed at the front of the main body 15 is provided so as to be variable in position and elastically biased in the direction of increasing the distance between centers with respect to the sprocket 18 of the drive shaft 17 installed at the rear of the main body 15. , a plurality of tines 22 are attached to the chain 21 which is wound between the sprockets 20 and 18 so as to be always in an upright position, and the main body 15 is
is formed by a fixed guide body 24 and a movable guide body 23 that can freely adjust the distance and approach from the fixed guide body 24, and the fixed guide body 2
By adjusting the position of the movable guide body 23 with respect to the main body 15, the degree of outward protrusion of the tip of the tine can be changed to a state where the rear side of the main body 15 becomes larger.

(E) Effect The vertical weeding device according to the present invention can produce
Alternatively, when reaping a long culm, if the position of the movable guide body 23 of the main body 15 is adjusted in the direction away from the fixed guide body 24, the posture of the tines 22 will be tilted backward in the engagement direction since the tines are always transferred in an upright state. The movable guide body 23 is moved away from the fixed guide body 24 in accordance with the culm length of the grain culm. If adjusted, the tines can be applied closer to the tip of the grain culm, and the grain culm is reliably engaged so that even if it is a lodging grain culm or a long culm, the grain culm will not come off from the tines 22. It loosens tangled grain culms and allows for precise weeding.

Further, the upper end of the main body 15 has an overhang 30, and when the tines move to the upper end and rotate with the rotation of the sprocket 18 of the drive shaft 17, the overhang 30 appears in a side view. The tines 17, which are tilted laterally, rotate and sink, and due to this movement, the grain culm caused by the tines 17 slides on the engagement portion of the tine 17 and the upper surface of the overhang portion 30. , Tine 17
It is certainly possible to break away from this.

(f) Embodiments Next, embodiments of the present invention will be described with reference to the drawings.

Fig. 1 is a side view of the main parts of a binder equipped with a vertical weeding device according to the present invention, and Fig. 2 is a front view of the binder. The pretreatment device 3 and the conveyance device 4 are arranged in front of the wheels. The illustrated pre-processing device 3 shows a pair of left and right lifting cases 5, 5 and a central weeding body 7 located between the two in a side view (see FIG. 1).
The cutting blade is installed diagonally with the front low and the rear high, forming a grain culm introduction route between the pair of lifting cases, and as is well known, the cutting blade is installed horizontally on the fuselage 2 below the rear of the lifting case. be done.

A lifting chain is hung in the lifting cases 5, 5 in a horizontal manner, and a plurality of tines 6, which are attached to the chain so as to be able to rise and fall, protrude upright at the lower end of the lifting case and are placed in the grain culm introduction path. It moves upward while engaging the grain culm, pulls up the grain culm, arranges it, then raises it and stores it lying down on the upper part of the case, and cuts the stock base of the raised and arranged grain culm with a cutting blade. ing.

Further, the conveying device 4 includes a grain culm leaning plate 10 that is disposed on the rear side of the lifting case 5 and on which the harvested grain culm is made to lean against, and a grain culm leaning plate 10 that is placed against the grain culm leaning plate 10. It is composed of a conveyor belt 11 with protrusions, etc., which conveys it toward a binding device on the right side of the figure, and this conveyor device 4 has the same structure as the conventional one.

Note that since the illustrated binder is of the two-row type, each of the lifting cases 5, 5 of the pre-processing section is equipped with undulating tines; however, in the case of a single-row type of binder, one It is well known that only the raising case can be provided with undulating tines, the other side of the raising case can be formed as a guide body, and the central weeding body 7 disposed in the middle can be omitted.

The front of the above-mentioned lifting cases 5, 5 has a substantially rhombic shape in front view (Fig. 2), and in side view (Fig.
In the case shown in FIG.
The tip of the central grass divider 7 is also formed to have substantially the same shape and the same slope as the grass divider 8.

One of the weeding bodies 8 is provided with a weeding rod 9 with a sharp tip, and the other side (uncut side) of the weeding body 8 or the raising case 5 is provided with a fairly long weeding rod that protrudes forward. The divider 13 is protruded, and the vertical grass dividing device 12 according to the present invention is installed on the outer side of the raising case 5. The vertical weeding device 12 is configured as follows.

The front part of the main body 15 is connected to the grass divider 13 via a mounting member 14, and the rear part of the main body 15 is supported by a transmission cylinder 16.

The transmission cylinder 16 accommodates a transmission cylinder extending and protruding from the upper rear surface of the lifting case 5, and a horizontal drive shaft 17 is interlocked with the transmission shaft inside the transmission cylinder 16 by a transmission means such as a bevel gear. Concatenated.

A sprocket 18 is fitted into the protrusion outside the transmission cylinder of the drive shaft 17, and a sprocket 20 corresponding to the sprocket 18 is fitted into the driven shaft 19 installed at the front of the main body 15, so that both sprockets 18 , 20 is connected to a chain 21, and a plurality of tines 22 are attached to the chain 21 at a predetermined pitch so as to be always in an upright state (not upright) with respect to the chain 21. -ing

FIG. 3 is an enlarged cross-sectional view taken along the line X-X' in FIG. In addition to installing a bar 25 to allow the chain 21 to roll, both guide bodies 2
A downward piece 26 and an upward piece 27 are made to hang downward and upward from 3 and 24, respectively, and both pieces are fixed with bolts 28 or the like so that the angle can be adjusted.

FIG. 4 is an enlarged side view of the main parts of FIG.
One upward facing piece 27 is provided at the front and the rear, respectively, and the holes through which the bolts 28, 28 are inserted are formed into elongated holes 2, respectively.
9 and 29, so that the movable guide body 23 can be adjusted toward and away from the fixed guide body 24, and by adjusting the position of the movable guide body 23 in the direction of separation from the fixed guide body 24, the movement locus of the tip of the tine 22 can be changed. As shown by the imaginary line, the degree of outward protrusion is indicated by the main body 15.
The structure is such that it can be changed to a state where the rear side becomes larger. Incidentally, if the angle of the guide body 23 is adjusted, the distance between the centers of the drive shaft 17 and the driven shaft 19 changes, but this change in the distance between the centers can be accommodated by pivoting the passive shaft 14 in the elongated hole of the mounting member 14. This is handled by constantly applying force using a spring so that the distance between the centers can be opened freely.

In addition, on the rear surface of the sprocket 18 at the tip of the transmission tube 16 that lifts up the rear part of the main body 15 of the vertical weeding device 12 and attaches it to the case 5, there is a projecting portion extending rearward and upward parallel to the direction of movement on the working side of the tines 17. 30
are extended rearward and upwardly beyond the tines 17 during rotation, and the tines move to the upper end,
When the drive shaft 17 rotates with the rotation of the sprocket 18, the rearwardly inclined tines 17 rotate and sink on the side of the overhang 30 when viewed from the side, and this movement causes the tines 17 to sink. The thus raised grain culm slides on the tine 17 engaging portion and the upper surface of the overhanging portion 30 toward the tip, and can be reliably separated from the tine 17.

(g) Effects of the invention Since the present invention is configured as explained above, it produces the effects described below.

By changing and adjusting the degree of outward protrusion on the engagement side of a chain with tines that move in an upright state, the degree of outward protrusion of the movement locus of the tip of the tine can be changed. This prevents the individual tines from tilting significantly backwards in the pulling direction, and the grain culms can be reliably divided at all times by the tines, especially when dealing with grain culms that are severely lodging. Since the degree of overhang on the rear side of the main unit (the rear of the tine upward transition path) can be adjusted to be larger, the grain culm can be taken over from the weeding divider at the weeding start point without changing. Even in the rear part of the upward migration path, the culms of the lodging grain culms are firmly tied to the culms, and the tangles are reliably combed out, resulting in good weeding.

In addition, the degree of extension of the chain changes by adjusting the position of the movable guide body on the main body that hangs the chain, and the sprocket on the passive side follows suit and tensions the chain, and the adjustment does not involve a transmission mechanism. Therefore, the overall structure is extremely simple and the adjustment operation is easy.

[Brief explanation of the drawing]

Figure 1 is a side view of the main parts of a binder to which the present invention is applied, Figure 2 is a plan view of the same, and Figure 3 is the X of Figure 1.
-X' sectional enlarged view, FIG. 4 is an enlarged sectional view of the main part of FIG. 15... Main body, 17... Drive shaft, 18... Sprocket, 20... Sprocket, 21... Chain, 22... Tine, 23... Movable guide body, 24
...Fixed guide.

Claims (1)

[Scope of utility model registration request] The passive side sprocket 20 installed at the front of the main body 15 is connected to the drive shaft 1 installed at the rear of the main body 15.
A plurality of tines 22 are provided in a variable position and elastically energized in the direction in which the distance between the centers increases with respect to the sprocket 18 of No. 7, and a plurality of tines 22 are always moved in an upright state to a chain 21 that extends between both sprockets 20 and 18. By attaching the main body 15 as shown in FIG. An angle changing structure for a vertical weeding device, characterized in that the degree of outward protrusion of the movement locus of the tips of the tines 22 can be changed and set to a state where the rear side of the main body 15 becomes larger.