JPS6222567B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device that reliably and stably transports cut grass and other thin stems of plants while elastically holding them without damaging them.

The applicant of the present invention has already proposed Japanese Patent Application Laid-Open No. 54-45240. In the conventional straw harvester, when transporting the cut straw grass in a so-called hanging position, it is necessary to move the grass from side to side as shown in FIGS. 11 and 12. A pair of endless flat belts 1 and 2 are used, and one of the flat belts 1 is biased to project from the inside into a convex curved surface, and the other flat belt 2 is elastically tightly attached to the flat belt 1.
The stem culm M of the strawberry is held between them. However, in this case, the conveyance path S in which the stem culm M is held between the two belts 1 and 2 is a monotonous path in which the stem culm M is simply allowed to proceed straight, so that the amount of stem culm that can be received in that path is somewhat small. When it changes to , a phenomenon in which it is not clamped occurs.

That is, as shown in FIG. 13, when the stem culm M is received as if flowing one after another into the straight path S by the belts 1 and 2, the bulk part a that has formed into a nodule is held without any problem. The small amount portion b located immediately before or after the large amount portion b will fall out of the gap widened by the large amount portion a, resulting in even the stem culm M having a normal length being thrown away. Even if it does not fall off, the clamping pressure will inevitably weaken, resulting in misalignment of the stem culm M in the small portion b. Belt 2 mentioned above
is elastically deformed by the accepted stem culm M,
This is because when the plant is clamped by the restoring drag force, the clamping pressure changes depending on the amount of stem culm.

As a preventive measure, conventionally the stem culm M is conveyed little by little by increasing the rotational speed of the belts 1 and 2. However, in this case, the stem culm M itself is easily damaged, and the conveying speed is increased. There is also the problem that it is necessary to ensure a long working length, which necessitates an increase in the overall length of the conveying device.

The present invention is intended to solve these problems, and its specific configuration will be explained in detail with reference to the drawings.
Although the illustrated embodiment shows the present invention applied to a rice straw harvester, it goes without saying that the invention can also be applied to stem culms other than rice grass. In FIGS. 1 to 3, reference numeral 10 collectively refers to the body of the rice harvester, on which an engine 11 is mounted. Reference numeral 12 also designates a transmission, which is electrically connected to the engine 11 via an intermediate shaft 13 and a belt. Reference numeral 14 indicates a pair of left and right running crawlers driven by the engine 11, and 15 indicates a hydraulic cylinder, which operates devices A, B, and C for weeding, pulling up, and reaping the grass from the front end of the machine. The hinge 16 is moved up and down around the fulcrum relative to the hinge 10.

The upper position of the engine 11 is a bundling floor 17,
Further, the rear position is set as a loading platform 18 for strawberry bundles so that both are continuous with each other.
Reference numeral 19 denotes a driver's cab that is integrally projected from the rear of the machine body 10, and therefore, while operating the harvester from the driver's cab 19, the operator can directly view the loading amount of strawberry bundles, etc. Needless to say, the present invention can also be applied to a type of harvester that is operated by an operator while walking in the field. Reference numeral 20 denotes a working power distribution shaft extending along the left and right lateral directions parallel to the intermediate shaft 13, and is connected to the intermediate shaft 13 at one lateral end via a transmission belt or a bevel gear mechanism. , the driving force from the engine 11 is distributed to various working devices. The working equipment includes a straw weeding device A, a pulling device B, and a reaping device C, as well as a clamping and conveying device D, a scab sorting device E, a collecting device F, and a binding device G, and a series of operations are performed by these devices. is scheduled to be given to rushes one after another.

The pinching and conveying device D according to the present invention acts to pinch and convey the stem culm M of the rush grass, which stands up due to the actions of weeding, pulling up, and reaping, in a so-called hanging position above the rear of the machine body 10. , therefore, as suggested from Figures 1 and 4, it is constructed in an upwardly inclined state that intersects the horizontal plane at a certain angle θ, and moreover, the starting point of the conveying action P ₁ is the lifting device B.
It is set at a desired height position that correctly faces the rush raising passage 21 from the rear and corresponds to the tip side of the rush. P ₂ also indicates the end point of the transport action.

As enlarged in FIGS. 4 to 10, this clamping and conveying device D has one V-belt set 2 which is arranged in parallel (three rows in the figure) separately and independently from each other due to its structure.
2 and the other V that is in a corresponding parallel state with this
It consists of a left and right pair of belt sets 23, and each of the belt sets 23, 23 is suspended over a pair of front and rear double row type V pulleys 24, 25, 26, 27 so as to be able to circulate. In that case, both belt sets 2
The three rows of V-belts forming each set of V-belts 2 and 23 are arranged in parallel with a certain gap W between adjacent ones.

Reference numeral 28 denotes a freely rotatable double-row type intermediate V-pulley supported in an appropriate number (total of 3 in the figure) necessary to project and bias one of the belt sets 22 from the inside to the outside in a convex curved shape. The other belt set 23 comes into surface contact with the convex curved surface in a back-to-back manner. The strawberry stem culm M is conveyed backward (see the arrows in Figures 4 and 6) while being held between the two belt sets 23 and 23 that are in contact with each other. The conveying path is designated by the reference numeral S, and its overall working length is designated by the reference numeral _L1 .

In that case, as is clear from FIG.
It is secured as a letter-shaped retraction guide gap 29, and is defined so that the straw stem culm M can be smoothly and reliably retracted into the continuing clamping conveyance path S. 30, 31 are both belt sets 22, 23
It is a drive support shaft that rotates double-row type V pulleys 25, 27 located at the rear of the motor, and both are connected to the power distribution shaft 20 via reduction gear boxes 32, 32, transmission shafts 34, 35, etc. 36 and 37 are double row type V pulleys 24 and 26 located at the front as well.
It is a fixed support shaft that freely rotates, and the two types of support shafts 3
0, 31, 36, 37 supporting frame 38,
A predetermined tension is applied to both belt sets 22, 23 by springs 40, 41 enclosed within the belt 39, respectively. 42 and 43 are the supporting frames 3
8, 39 is a tension bearing rail fitted so as to be slidable in the front and rear direction.

Further, 44 is a side feed belt for the tip of the rush, which is stretched around the drive shaft 31 of the rear double-row type V pulley 27 in the other belt set 23 described above so as to rotate integrally therewith. , the above-mentioned clamping conveyance path S
So to speak, it is directly overhead. Reference numeral 45 denotes a double-row interlocking V-pulley that suspends the intermediate position of one of the belt sets 22, and 46 an interlocking support shaft for rotational driving thereof.
A driving V-pulley 48 of No. 7 is also fixedly installed. In other words, a retraction belt 47 that circulates integrally with one of the belt sets 22 is connected to the belt set 22, and is finished as a so-called unit body with the belt 47. In the same sense, the other belt set 23 is formed into a unit with the tip side feeding belt 44.

Like the feeding belt 44, the pulling belt 47 is an endless belt equipped with lugs 49, and carries the straw stem culm M that has been correctly pulled up by the pulling device B from the lifting path S to both sides of the clamping and conveying device D. The belt sets 22 and 23 are smoothly pulled into the conveying path S between the belts 22 and 23, as if they were being transferred, and the starting point _P3 of the action is positioned slightly forward of the input section of the conveying path S. has been done. 5
0 is a driven V-pulley of the retraction belt 47.

As is particularly clear from FIGS. 9 and 10, both of the belt sets 22 and the double-row intermediate V pulley 28 projecting and biasing from the inside to the outside in a convex curved shape are connected to one of the belt sets 22 in the above-mentioned parallel state. A certain level difference H is given to a plurality of (three in the figure) belt assembly rack surfaces for hanging the belt assembly 22, so that the diameter dimension thereof can be changed in size from one another. As mentioned above, since the other belt set 23 is supposed to be in elastic contact with each other back to back, the clamping and conveying path S of the stem culm M is configured as a curved path based on the step H. Become. However, not only a pair of front and rear double-row type V pulleys 26 and 27 on which the other belt set 23 is hung, but also a pair of front and rear double-row type V pulleys on which one belt set 22 in contact with the other belt set 23 is hung. V pulley 24, 25
As is clear from FIGS. 7 and 8, there is no change in the diameter size of the belt assembly surface, and the clamping conveyance formed by the backs of both belt sets 22 and 23 is The entrance and exit of road S are
The route is designed to avoid curves.

In other words, by providing a certain level difference H based on the change in the diameter dimension only on the belt mounting rack surface of the double-row type intermediate V pulley 28, the above-mentioned clamping conveyance path S has the overall working length L1. Only the portion of constant action length L2 located in the intermediate process is configured to be a bending path. Therefore, the stem culm M is smoothly and reliably introduced from the entrance of the clamping conveyance path S by the automatic guiding pulling action of the retraction belt 47, and the stem culm M is introduced smoothly and reliably from the entrance of the clamping conveyance path. Even if there is a slight change in the amount of the stem culm M received in the pinching conveyance path S, or a variation in the shape of a ball, the stem culm M is always stably and reliably clamped and conveyed, and the strength of clamping pressure can be completely compensated for. In this regard, in the figure, both belt sets 22 and 23 are facing each other in the left-right positional relationship when viewed from above, and the strawberry stem culm M is held in a natural hanging position and conveyed. According to this function, there is no fear that even the grass of regular length will fall off and be thrown away accidentally, and the sorting effect can be improved.

The machine body 10 is
As it is clearly shown in Figures 1 to 3, while the straw is being pinched and conveyed toward the rear, it is separated from the intermediate stem part by the goose sorting device E, which consists of a pair of upper and lower goose transport chains 51 and 52 with comb claws. While being combed toward the base of the stock, it is sent out in a substantially right-angled left and right direction, and at the same time, the direction is changed so that it is lifted into a horizontal lying position up to the height of the bundling bed 17, and then The stock base side is then sent rearward in an orderly manner by the lug-equipped focusing belt 53 of the focusing device F, and as soon as a certain amount of stock is focused on the focusing section, it is bound by the bundling device G. The bundled strawberry bundles are then kicked out onto the loading platform 18 of the aircraft body 10.
It should be noted that the above-mentioned clamping and conveying device D can also be used in an installation configuration where it clamps and conveys the stems M of rushes and other plants in a horizontal, prone position.

As described above, the stem culm M clamping and conveying device D according to the present invention is hung on at least a pair of front and rear double-row type V pulleys 24 and 25 so as to circulate, and an appropriate number of stem culms M are suspended on the way. Double row intermediate V
One V-belt set 22 is juxtaposed in a convex curved shape from the inside to the outside by the pulley 28, and a pair of double-row V pulleys 26, 27 are also arranged in the front and rear.
The stem culm M
and the other V-belt set 23 which are arranged in parallel so as to be able to pinch and convey the V-belts.
A certain gap W is opened, and a certain level difference H is provided only on the belt mounting surface of the double-row intermediate V-pulley 28 based on the change in the diameter dimension, so that one V-belt set 22 and the other V-belt set 22 are separated from each other. Since the clamping and conveying path S of the stem culm M formed by the back-to-back relationship with the V-belt set 23 is determined to be a curved path, the problem of the prior art described at the beginning with reference to FIGS. 11 to 13 occurs. This eliminates all problems, and the necessary configuration for this purpose is extremely simple and sufficient.

That is, changes in the clamping pressure based on the amount of stem culms are likely to occur during the intermediate action process of the clamping conveyance path S. In response to this, the present invention uses a double-row type "intermediate" V By providing a certain level difference H based on the change in the diameter size only on the belt hanging surface of the pulley 28, the stem formed by the backs of one V-belt group 22 and the other V-belt group 23 is created. Since the pinching and conveying path S of the culm M is configured to be a curved path, a stable and reliable pinching and conveying action can be carried out at all times, regardless of the amount of stem culm. This eliminates the problem of even the stem culm M of the regular length to be harvested being thrown away.

Therefore, in order to obtain the desired effect, it is possible to slow down the conveyance speed, and the overall working length L1 of the clamping conveyance can be significantly shortened, and as a result, the entire device can be made extremely compact. This means that it can be made more compact. In this sense, it can be said that the present invention is particularly useful when applied to a straw harvester, which is susceptible to weather conditions during harvest and whose work efficiency is in question.

On the other hand, at least one pair of front and rear double-row type V pulleys 24, 2 suspend both belt sets 22, 23.
5, 26, and 27, the step H is based on the change in the diameter dimension like the intermediate V pulley 28 mentioned above.
is not provided on the surface of the belt mounting frame, and on the contrary, it is formed as a non-bending path, so that the outlet and especially the inlet of the clamping conveyance path S are not attached to the stem culm M introduced therein. It is adapted to the straight culm form, and as a result, the stem culm M will not be damaged by sudden bending, and it can be introduced smoothly into the clamping conveyance path S without any difficulty, and it can be led out from the clamping conveyance path S without resistance. It is possible to do so.

In that case, the retraction belt 47 with lugs 49 that circulates integrally is also coupled to one or both of the belt sets 22 and 23 that are to come into contact with each other to form the nipping conveyance path S, and the entire If it is finished as a unit body and is set so that the stem culm M can be automatically guided by the retracting belt 47, the above-mentioned effects can be further improved.

Moreover, the clamping and conveying path S of the present invention is not formed into a curved path due to the cross-sectional shape of the belt itself, but is formed by a "double-row type" intermediate V pulley 28 equipped with a plurality of belt mounting surfaces. , giving a change in the size of the diameter between adjacent belt mounting surfaces,
Since the step H based on this is configured to form a curved path, the other V-belt group 2 described above
3, as well as one of the V-belt sets 22 which is overhanging and biased by the intermediate V-pulley 28, there is no need to create a special cross-sectional shape for the belt itself suspended on this, and it can be mass-produced at low cost. For example, if it becomes necessary to change the overall working length L1 of the holding and conveying path S, this can be easily accommodated by increasing or decreasing the intermediate V pulley 28.

Moreover, the plurality of belts forming each of the two belt sets 22 and 23 are separate and independent from each other,
Since a certain gap W is opened between the adjacent adjacent ones in parallel, the pinching conveyance path S formed by this does not become completely blind over the entire working length L1, and as a result, the stem Even if a dead and broken tip of the culm M or other foreign matter attached to the stem culm M is pushed into the clamping conveyance path S, even though the conveyance path S is a curved path. , this can be effectively dropped and discharged from the opening gap W by itself, and there is no fear that it will adhere or accumulate.

Both belt sets 22 and 23 mentioned above are both V-shaped belts, and double-row V pulleys 24, 25, 26, and 27 for hanging the belts, and a double-row intermediate V pulley 28 are also used. is the literal V
Because it is shaped like a letter, it may cause misalignment of the belts that make up both belt sets 22 and 23, or the pulley 2.
There is no risk of falling off from the stems 4, 25, 26, 27, 28 or clogging the void W, and from this point of view as well, the clamping and conveying action of the stem culm M can be maintained stably for a long time.

Furthermore, in the present invention, the double row type intermediate V pulley 2
One of the V-belt sets 22 suspended from the V-belt assembly 22 is biased by the intermediate V-pulley 28 to protrude from the inside to the outside in a convexly curved shape, so that, for example, the V-belt set 22 suspended from the clamping conveyance path S is biased in an upright position. The stem culm M of a rush, etc. that hangs down is bent up and turned from the bottom end of the stem to a sideways posture, and the floating...
When picking out and sorting mixed short and small waste, the stem culm M can be smoothly bent up and turned toward the inside (inner corner side) of the convex curved surface in a plan view of the clamping conveyance path. It is also possible to do so.

It is easier and smoother to bend and change the direction of the stem culm M toward the concave curved surface side, which has a bending tendency, than to bend it toward the convex curved surface side (the protruding corner side), which is the opposite. It is obvious that this is possible, and furthermore, the bending and deflection action can be effectively countered and countered by the intermediate V pulley 28 from the inside. In that sense, it can be said to be particularly effective when used for the above-mentioned gourd sorting function of a strawberry harvester.

[Brief explanation of the drawing]

Figures 1 to 3 illustrate the present invention applied to a rice straw harvester, with Figure 1 being a general schematic side view of the harvester, Figures 2 and 3 being a plan view and front view, and Figure 4 being a side view of the harvester. An enlarged side view extracting and showing the stem culm clamping and conveying device, Figures 5 and 6 are its rear view and plan view, and Figures 7 to 6 are
Figure 9 shows the lines X-X, Y-Y, and Z-Z in Figure 6.
Each enlarged sectional view along the line, FIG. 10 is a partial enlarged sectional view of FIG. 9 showing the pinching and conveying action of the stem culm, FIG. 11 is a plan view of the conventional device corresponding to FIG. 6, and FIG. 12 is the same. Enlarged sectional view corresponding to FIG. 9, No. 1
FIG. 3 is a partially enlarged plan view of FIG. 11, showing the clamping and conveying action of the stem culm. D...Pinch conveyance device, H...Step, M...Stem culm, S...Pinch conveyance path, 22, 23...Belt set, 24, 25, 26, 27...Pulley, 28
...Middle pulley, 47...Retraction belt.

Claims (1)

[Claims] 1. At least a pair of front and rear double-row type V pulleys 2
4 and 25, and in the middle thereof, an appropriate number of double-row intermediate V pulleys 28 are used to project one of the parallel V pulleys 28 from the inside to the outside in a convex curved shape. Belt set 22
Similarly, a pair of front and rear double-row type V pulleys 26, 27
The stem culm M
and the other V-belt set 23 which are arranged in parallel so as to be able to pinch and convey the V-belts.
A certain gap W is opened, and a certain level difference H is provided only on the belt mounting surface of the double-row intermediate V-pulley 28 based on the change in the diameter dimension, so that one V-belt set 22 and the other V-belt set 22 are separated from each other. A clamping and conveying device for a stem culm, characterized in that a clamping and conveying path S for the stem culm M formed by the backs of the V-belt set 23 is determined to be a curved path. 2. By making both V-belt sets 22 and 23 that are in contact with each other face each other in a left-right positional relationship when viewed from a plane, and also by installing them in an upwardly inclined state at a certain angle θ that intersects with a horizontal plane when viewed from a side, the stem Culm M
2. A gripping and conveying device for a stem culm according to claim 1, wherein the stem culm is held and conveyed in a hanging position from both V-belt sets 22 and 23. 3. The V-belt sets 22 and 23 that are in contact with each other are set so that their installation heights can be adjusted so that the position at which the stem culm M is held can be changed. A pinching and conveying device for stem culms. 4. The stem culm according to claim 1, characterized in that each of the two V-belt sets 22, 23 that are in contact with each other is provided with a spring pressure for a tension that acts along the longitudinal direction of the stem culm. Clamping and conveying device. 5 At least a pair of front and rear double-row type V pulleys 2
4 and 25, and in the middle thereof, an appropriate number of double-row intermediate V pulleys 28 are used to project one of the parallel V pulleys 28 from the inside to the outside in a convex curved shape. Belt set 22
Similarly, a pair of front and rear double-row type V pulleys 26, 27
The stem culm M
A retractor with lugs 49 connected to the other V-belt set 23 that are parallel to each other so as to be able to pinch and convey the objects, and to one or both of the two V-belt sets 22 and 23 that are in contact with each other so as to circulate integrally. A certain gap W is opened between adjacent V-belts forming each pair in both V-belt sets 22 and 23, and the belt assembly of the double-row type intermediate V-pulley 28 is suspended. By giving a certain level difference H based on the size change of the diameter dimension only on the surface, the clamping conveyance path S of the stem culm M formed by the backs of one V-belt group 22 and the other V-belt group 23 is created. , the belt 47 defines a bending path, and pulls the stem culm M into the bending path.
1. A gripping and conveying device for a stem culm, characterized in that the relationship is set such that it can be retracted in an automatic guided manner. 6. A patent claim characterized in that the unit body of both V-belt sets 22, 23 and the retraction belt 47 that are in contact with each other is set so that its installation height can be freely adjusted so that the clamping position of the stem culm M can be changed. The range of
6. The stem culm clamping and conveying device according to item 5.