JPS6317Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a device for dispensing granular materials such as seeds or fertilizers, and is devised so that even distribution on both sides can be performed even after adjusting the dispensing amount using a pair of main and sub dispensing rolls. This is what I did.

As is well known, as a device for dispensing seeds or fertilizers, there is a type that combines rolls in a nested manner, for example, as shown in Japanese Utility Model Application Publication No. 55-37394. In this case, one of the main dispensing rolls A feeding groove is formed on the outer periphery of the side, and a feeding amount adjustment piece that fits into the feeding groove is projected from the side of the sub feeding roll.

In this way, the feeding space is made variable by adjusting the adjustment piece in the feeding groove to advance or retreat, but in the past, when making changes, it was common for only one roll to move forward or backward, and the other to be exclusively fixed. As a result, the widthwise center of the feeding space tends to become eccentric as the adjustment is made, and in this case, it is not possible to adopt a desirable method such as distributing fertilizer evenly to the left and right, and in such a case, two sets of rolls are used. There was a disadvantage in having to compose a

This invention was made in order to solve the above problem, and its purpose is that the center of the dispensed material storage part of the dispensing roll does not displace at all even after metering, so that, for example, only one set of rolls can be used. Therefore, it is an object of the present invention to provide a device for dispensing granular materials such as seeds or fertilizers, which is designed to enable uniform fertilization before sowing.
Therefore, its characteristic feature is that the housing is provided with a rotatable drive shaft that is horizontally installed in the left-right direction and has both ends protruding outside the housing, and that the drive shaft has reverse threads on both ends. A screw cylinder having a pair of threaded parts is fitted concentrically on the outside so that it can rotate freely relative to each other and cannot move in the axial direction, and each of the two feeding rolls located inside the housing moves back and forth in the axial direction onto each threaded part. One of the feed rolls is fitted externally to the drive shaft so that it cannot rotate relative to the drive shaft and is movable in the axial direction, and the other is attached to the outer periphery of one of the feed rolls in the axial direction. A feed-out groove is formed that opens on the side of the feed-out roll, and the feed-out groove is fitted into the feed-out groove so as to move forward and backward in the axial direction, and is formed between the feed-out groove and the feed groove in the axial direction. A feeding amount adjustment piece that always maintains a neutral position at a constant position is provided in a protruding shape on the side of the one feeding roll in the axial direction,
One end of the drive shaft is provided with means for driving the drive shaft, and the other end is provided with operating means for freely rotating and fixing the screw cylinder with respect to the drive shaft, and below the feeding roll,
The chute is bifurcated to the left and right, and the branch portion coincides with the center position of the dispensed material storage section in the left-right direction, and the chute equally guides the dispensed material from the dispensing roll to the left and right.

This invention will be explained below with reference to illustrated embodiments.

Figure 1 shows a dual-purpose fertilizing and seeding machine equipped at the rear of a tillage rotary that is towed by the rear of a tractor, and the left side of the figure corresponds to the direction of travel, and Figure 2 is a cross-sectional view taken along the - line. , FIG. 3 is a sectional view taken along the - line.

The figure 1 shows a pair of upper and lower parallel links, and the front end of the link 1 is pivotally connected to a tool bar (not shown) installed horizontally in the rear width direction of the tilling rotary, and the rear end is pivotally connected between the front end supports 2 of the dual-purpose machine. has been done.

In addition, 3 in the figure is a common body constituting the main frame of this working machine, which is used as a housing.
The body 3 is a U-shaped integral frame with an open bottom to prevent rainwater from entering, and the front half of the body 3, which is elongated from front to back, constitutes a fertilizing device A, and the second half constitutes a seeding device B. .

First, let's talk about fertilizer application device A.
In this device, a fertilizer introduction tube 4 is provided in a communicating manner at the top, and a bellows-shaped fertilizer guide pipe is connected to the tube 4 from a fertilizer tank (not shown) which is separately held upright on a tillage rotary via a stay. The lower ends of 5 are connected vertically.

A tapered fertilizer supply space 6 is formed in the lower part of the fertilizer introducing tube 4 so as to be concentric with the tube 4, and this space 6 is connected to a pair of left and right opposing partition plates 7, 7.
is formed by hanging vertically on the bottom surface of the upper wall of the common body 3. The dividing plate 7 has a special shape that approaches the outer periphery of the roll, which will be described later, and a connecting plate 8 which also serves as a falling guide is provided between them.

On the other hand, the fertilizer dispensing mechanism is provided with a fertilizing drive shaft 10 that is rotatably driven via the left drive wheel 9, and the shaft 10 is rotatably supported via the left and right walls of the common body 3. 10, a first spline 11 is formed on the left side at a corresponding location in the common body 3 as shown in the second figure, and this spline 1
1, a main feed roll 12 is fitted so as to be movable forward and backward.

The roll 12 has a plurality of feeding grooves 1 on its outer periphery.
3, and its right end is open as before.

Reference numeral 14 denotes a transmission tube that is freely rotating around the fertilizer drive shaft 10 while penetrating the right side wall of the common body 3, and a locking ring 15 pinned to the fertilizer drive shaft 10 abuts on its outer end, while a second spline 16 is formed on the outer periphery of its inner end.

Reference numeral 18 denotes a turnbuckle cylinder, which is shown as a screw cylinder, and is fitted concentrically around the middle part of the drive shaft 10 in the axial direction so as to be relatively rotatable and immovable in the axial direction.
Female third spline 17 of turnbuckle tube 18
is connected to the second spline 16 of the transmission cylinder 14 so as to be relatively non-rotatable and movable in the axial direction.
Further, at both ends of the turnbuckle tube 18,
A right-handed threaded portion 19 and a left-handed threaded portion 2 that are oppositely threaded to each other.
1 is formed, for example, the main feeding roll 12 is connected to the right-hand threaded portion 19 via the first female threaded portion 20, and the sub-feeding roll 22 is connected to the left-hand threaded portion 21 via the second female threaded portion 2.
3, they are externally screwed concentrically so that they can move forward and backward in the axial direction.

In this case, the sub-feeding roll 22 has the feed-out amount adjusting pieces 24 that fit into each of the feeding grooves 13 of the main feed-out roll 12 in the axial direction as before.
In addition to integrally protruding a plurality of pieces on the second side, a cylindrical inner cylinder part 26 is integrally formed, which is slidably joined to the inner circumferential cylinder surface of the outer cylinder part 25 having the feeding groove 13. It is designed to prevent the seeds from falling around the central spiral shaft.

In the above case, the lower end of the fertilizer supply space 6 always corresponds concentrically with the feed-out space a shown as the feed-out material storage section, so that both the main and auxiliary feed-out rolls 1
2 and 22 are adjusted to move forward or backward by the same amount, and as a specific means, first, a lock receiving plate 27 is provided protruding from the outer periphery of the retaining ring 15, and the fertilizing drive shaft is closed except during work. 10, and a rotation transmission plate 28 is fixedly installed on the outer periphery of the transmission cylinder 14. A saucer-shaped rotary operation piece 29 is interposed between the lock receiving plate 27 and the rotation transmission plate 28 so as to be able to move forward and backward. The outer ends of the locking/disengaging pins 31 fixed to the outer periphery of the piece 29 at two places in a penetrating manner are connected to the lock receiving plate 2.
7, and the inner end is engaged with the transmission guide port 33 of the rotation transmission board 28, while if the rotation operation piece 29 is pushed against the spring 30, , when the engagement pin 31 is disengaged from the lock receiving plate 27 and the rotation operation piece 29 is rotated, the turnbuckle cylinder 18 is rotated through the transmission cylinder 14, and the main and sub-feeding rolls 12 and 22 are moved in opposite directions. The forward and backward movements are adjusted, and in this way, the feeding space a is always maintained in a concentric relationship.

The fertilizer fed out in this way is
The amount is measured by a metering brush 35 attached to a stay 34 installed vertically at the front of the 7-segment space. Each trailing side of the groove 13 is designed to have a slower groove angle than the leading side to facilitate escape.

Next, the fertilizing chute 36 formed at the bottom of the dispensing device will be described. The chute 36 is an integral cylinder branched in a V-shape, with the upper end near the receiving opening 37 oriented vertically and the lower part formed with a square cylindrical branched discharge section 38 inclined outward, which are joined together on the left and right and fixed to the opposing partition plates 7, 7 with bolts. The receiving openings 37 of this chute 36 are actually independent on the left and right, but they are adjacent to each other and the branched section b corresponds concentrically to the bottom side of the dispensing space a, while the left and right discharge openings 36, 39 of the chute 36 face to spread fertilizer in response to the fertilizing chute 40 and fertilizing furrow cutting discs 41, 41 equipped via the legs of the front end supports 2, 2. Here, the left and right fertilizing furrow cutting discs 41,
Both 41 are positioned on the outside, and this symmetrical and wide arrangement makes the resistance equal on the left and right, allowing for stable work.At the same time, as shown in Figure 2, the relationship between the sowing shoe 42 and the sowing furrow cutting disc 43 is designed to be large in width, thereby reducing the risk of contamination by various foreign matter.

On the other hand, seeding device B is constructed at the rear of fertilization device A, and although it is constructed almost in the same way as device A, the overall configuration will be explained below with some slightly different components. Reference numeral 44 denotes a seed introduction tube to which a seed guide pipe 45 led from a seed tank arranged in parallel with the fertilizer tank is connected, and seeds are supplied to the feeding groove 13 through a seed supply space 46 serving as a feeding material storage section. The feeding device can also be driven by a sowing drive shaft 47 having another sprocket 49 which is interlocked with the sprocket 48 of the fertilization drive shaft 10. In addition, the main and sub-feeding rolls 12, 22
This is the same as the fertilizer application side, but there is a difference in that a cam sprocket 50 is integrally formed on the outer periphery of the left end of the main feed roll 12. This is for interlocking the dot seeding control plate 52 which is provided in a pivot manner with respect to the U-shaped seeding chute 51 which is open at the rear.For this reason, a cam plate 55 with a cam 54 is pivotally supported on the chute 51. The dispersion control plate 52 can be intermittently oscillated via a pivot 53.

Therefore, in the above configuration, the rotation operation piece 29 is pushed inward to remove the engagement pin 31 from the lock receiver 27.
is removed, and in that state, if the rotation operation piece 29 is rotated in a predetermined direction, the engagement pin 31 - rotation transmission board 2
8-Transmission cylinder 14-The turnbuckle cylinder 18 rotates through the second spline 16, whereby the main and sub-feeding rolls 12 and 22, which are screwed into the right-hand threaded part 19 and the left-hand threaded part 21, respectively, move in opposite directions. Movement will be adjusted. This is done equally on both the left and right sides, so that the width center of the delivery space a is always at a constant position even after adjustment, thereby maintaining a concentric relationship with the fertilizer supply space 6 and the fertilizer application chute 36.

As a result, the supply of fertilizer, etc. into the dispensing space a can be carried out smoothly and accurately, and the dispensing material is always fixedly scattered at the center of the width of the fuselage by concentrically corresponding chute. In particular, on the fertilizer application side, chute 36
By simply fixing it in a bifurcated shape in a concentric manner in the dispensing space a, uniform dispersion on the left and right sides can be performed regardless of the adjustment of the dispensing amount. As a result, if a single set consisting of two rolls, the main feed roll 12 and the sub feed roll 22, is provided, it is possible to apply fertilizer evenly to two rows at the pre-seeding stage without adjusting the movement of the chute 36. It is very effective in that the equalization does not deteriorate even after metering. This effect also applies to seeding. Further, since both the main and sub-feeding rolls 12, 22 do not move to the same side but move oppositely, the center of gravity of them as a whole does not fluctuate much, so that the work is always stable regardless of the adjustment. Furthermore, there is no need to relocate the metering brush 35 at all.

In addition, as mentioned above, the one-touch rotary operation piece 29
If these methods are combined, it is advantageous in that the metering work can be performed very easily and precisely without any tools required, but the method is not limited to this method.

This invention is as described above, and the center of the dispensed material storage section formed by both dispensing rolls does not displace at all even after metering adjustment, and for example, evenly fertilizing on the left and right sides before sowing can be done using only one set of rolls. This makes it possible to do this without having to change the position of the chute or other parts at all. In particular, in the present invention, a screw cylinder having a pair of threaded portions with opposite threads on both ends thereof is fitted concentrically around the drive shaft such that it is relatively rotatable and immovable in the axial direction. Two respective feed-out rolls that rotate integrally with the drive shaft are fitted onto the screw portion concentrically so that they can move forward and backward in the axial direction. Since the axial center of the feeding roll is aligned with the axis of the feeding roll, there is no risk of twisting when adjusting the movement of each feeding roll in the axial direction, and the adjustment operation can be performed easily. Since the drive shaft is equipped with a drive shaft, the structure can be made simpler and more compact compared to a device that does not have a drive shaft with an operation mechanism for the feeding roll. In addition, the dispensed material storage section is formed by only two dispensing rolls, which facilitates adjustment during assembly to the screw tube and simplifies the structure. Further, a means for driving the drive shaft is provided at one end of the drive shaft, and a means for driving the drive shaft is provided at the other end.
Since the screw tubes are each provided with operating means that can be rotated and fixed with respect to the drive shaft, the drive shaft can be provided with the driving means and the operating means in a well-balanced manner, and the two means can be prevented from interfering with each other. There is also an advantage that the operating means can be easily operated without fear of being damaged.

[Brief explanation of drawings]

Fig. 1 is a side sectional view of a machine for both fertilization and seeding that shows an example of this invention, Fig. 2 is a sectional view taken along the - line, Fig. 3 is a sectional view taken along the - line, and Fig. 4 is a sectional view taken along the - line.
FIG. 5 is a partial perspective view showing the fitting relationship between both delivery rolls. 12... Main feeding roll, 13... Feeding groove, 22
... Sub-feeding roll, 24... Feeding amount adjustment piece, 36
... Fertilizer chute, a... Feeding space.

Claims (1)

[Scope of utility model registration request] The housing is rotatably provided with a drive shaft that is horizontally installed in the left-right direction and has both ends protruding outside the housing, and the drive shaft has a screw having a pair of threaded portions with opposite threads on both ends thereof. The two feed rolls located inside the housing are fitted concentrically on each screw portion so as to be relatively rotatable and immovable in the axial direction. one of the feed rolls is fitted onto the outside of the drive shaft so that it cannot rotate relative to the drive shaft and is movable in the axial direction; , and is fitted into the other delivery roll so as to be able to move forward and backward in the axial direction into the delivery groove, and the neutral position in the axial direction of the delivered product storage section formed between the delivery groove and the delivery groove is always a constant position. A feeding amount adjustment piece is provided in a protruding manner on the side of the above-mentioned one feeding roll in the axial direction, a means for driving the driving shaft is provided at one end of the drive shaft, and a screw cylinder is provided at the other end with respect to the driving shaft. Equipped with operating means that can be rotated and fixed freely,
Below the feed roll, there is provided a chute that is bifurcated to the left and right, the branching portion is aligned with the center position of the feed storage section in the left and right direction, and guides the feed from the feed roll evenly to the left and right. A device for dispensing granular materials such as seeds or fertilizers.