JP3958458B2 - Subsoiler work machine that injects slurry into soil - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a subsoiler work machine for injecting slurry into soil, and more particularly to a subsoiler work machine suitable for soil improvement in which slurry suitable for slurry disposal and soil fertilization is injected into soil.
[0002]
[Prior art]
One of the urgent issues in the dairy farming business in Japan is the problem of slurry disposal. About one cow is urinating more than several tens of liters a day and more than 100 liters, and urination is over 100 liters.
As a well-known method of processing excrement such as urination, there is a method of spraying these on the field surface or digging a groove and pouring it into the groove. Most of them are of a type in which slurry is directly sprayed onto a field by a pump while pulling and moving a slurry tanker vehicle equipped with a bacium pump by a tractor.
This treatment strategy aims at the effect that excrement can be used as organic matter in the field. However, just spraying on the surface of the field causes problems such as malodor and flies. In particular, when it was exposed to strong sunlight in summer, it gave off a strong odor and was also called a bad odor pollution.
[0003]
Therefore, combining the bacium car equipped with the slurry tank and the subsoiler work machine, the slurry pumped from the slurry tank is ejected from the injector provided behind the knife beam and guided into the soil, and the subsoil is crushed. However, what can perform a slurry process is proposed.
A typical example is JP-A-7-23607.
[0004]
In this working machine, a subsoil working machine is used to pull a bacium car 120, and this bacium car 120 has a slurry tank 122 mounted on a car body 121, and a tow bar 123 extends in front of the car body 121. ing. A connecting portion 124 is provided at the foremost end of the traction rod 123 so that it can be connected to the hitch of the tractor.
[0005]
The subsoiler work machine 130 is provided with a chisel 132 having a wing 132a at the lower end of the knife beam 131, and an injector 141 that discharges slurry along the rear edge of the knife beam 131. A second wing 139 is disposed at a level above the wing 132 a provided in the chisel 132, and the wing 132 a is attached to the knife beam 131. It can be freely rotated up and down (indicated by arrow a).
[0006]
The slurry in the slurry tank 122 is pumped by the output of a pump mounted on the vehicle body 121, and is supplied to the injector 141 through the on-off valve 125, the flexible pipe 142, the branch portion 143, and the flexible pipe 144 in this order. Then, the slurry discharged from the injector 141 fills the space formed in the subsoil layer by the chisel 132.
[0007]
Furthermore, the second wing 139 moves while following the vertical movement of the subsoiler work machine, and changes to a posture with the least resistance due to the resistance from the soil accompanying the movement, and the direction of work progress It becomes a plane posture along.
[0008]
[Problems to be solved by the invention]
By using the working machine as described above, it is possible to process the slurry and fertilize the field. However, in this working machine, the rear end of the second wing 139 moves up and down. When the earth pressure due to the covering is small, the rear end portion is pushed upward by the jet pressure of the slurry discharged from the injector 141, and only the slurry flows out to the field surface without being mixed with the soil.
This is a problem when the slurry ejection depth is shallow, especially when the field surface is wavy. More specifically, in a work environment where the slope of the wavy ground is climbed, the rear end of the second wing 139 and the surface are in a state where the rear end of the second wing 139 is pushed up by the jet pressure of the slurry. In such an extreme case, the rear end of the second wing 139 may be exposed on the surface, and the slurry cannot be reliably contained in the soil.
In addition, since the space formed by the chisel 132 inclines on the sloping ground, the slurry ejected from the injector 141 descends along the gradient, accumulates in the valleys of the wavy land, forms a soft zone locally, In some cases, the tractor could be prevented from traveling.
[0009]
Therefore, the present invention provides a sub-soil work machine that reliably mixes slurry discharged from an injector with surrounding soil to increase viscosity and prevents slurry from flowing out to the field surface even in a climbing work environment. It is intended.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, a subsoiler working machine for injecting slurry into soil according to the present invention is equipped with a subsoiler working machine having at least a knife beam and a tow mounted on the subsoiler working machine, and a slurry tank is mounted on the vehicle body. The sub-soiler working machine is disposed along the knife beam, and has a discharge port that is directed to the rear side and the lower side in the working direction, and is supplied from a slurry tank of the bacium car. In a subsoiler working machine for injecting slurry into the soil so as to be ejected from the injector, the knife beam is positioned above the discharge port of the slurry injector so that the posture does not change during operation. One end of the wing has a fixed wing, and the ejected slurry is placed in the space under this wing. It is characterized in that it is mixed with the soil crushed by the wing so that the viscosity becomes hard and does not rise in the soil due to the pressure of the slurry.
As a result, the slurry ejected into the soil becomes mixed with the soil excavated by the wing or knife beam, increasing its viscosity, reducing the fluidity and preventing the slurry from overflowing to the field surface. Can be contained in the soil.
In addition, the wing is characterized in that both side edges in the work traveling direction are inclined downward including diagonally downward to form a space inside the lower surface. It is possible to reliably prevent the field surface from flowing out.
Furthermore, the wing is fixed so as to allow adjustment rotation so that the rear end of the fixed wing can change its posture in the up and down direction when not working. The slurry containing space can be adjusted according to the shape and soil environment.
[0011]
According to the subsoiler working machine for injecting the slurry of the present invention into the soil, the slurry is ejected and supplied to a deep position of the soil by the injector, and the ejected slurry is contained by the wing, so that it is mixed with the surrounding soil and clay. And the outflow to the field surface is suppressed. In addition, the spray pressure of the slurry discharged from the injector is reliably enclosed by the wings that do not change the posture during work, thereby ensuring the mixing of the slurry and the soil. Further, since the posture of the wing can be adjusted by once releasing the fixed state at the fixed end portion, it is possible to select the posture according to the topography of the field, and without causing the slurry to flow out to the surface of the field. It is possible to prevent the generation of bad odor pollution and to effectively use the slurry as an organic matter circulation.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of a subsoiler working machine for injecting slurry according to the present invention will be described with reference to FIGS. 1 to 6.
[0013]
In FIG. 1, reference numeral 100 denotes a subsoiler work machine, and the subsoiler work machine 100 is constituted by a subsoiler 1 and a bakerium car 2 attached thereto. This bacium car 2 is configured by mounting a slurry tank 4 on a vehicle body 3 having wheels at the rear. A front portion of the vehicle body 3 has a traction rod 3 a extending forward, and the traction rod 3 a is connected to the subsoiler 1.
Further, as shown in FIG. 2, the subsoiler 1 has a frame 6 extending in the width direction. A mast 8 is provided at the center of the frame 6, and a front portion is provided near both ends of the frame. Side brackets 9 are provided so as to project from the side. The mast 8 and the side bracket 9 are attached to the end portions of the upper link U and the lower link L of a three-point link hitch mechanism provided in a tractor (not shown) by hitch pins 8a and 9a, respectively. The subsoiler 1 is integrally mounted on the tractor by the three-point hitch mechanism. The bakerium car 2 pulled by the subsoiler 1 is also pulled by the tractor.
[0014]
The frame 6 is provided with intermediate brackets 11, 11 projecting forward and rearward between the mast 8 and the pair of left and right side brackets 9. The knife beam 13 is fastened using bolts, nuts, and washers. A chisel 14 is attached to the lower end portion of the knife beams 13, and the chisel 14 has a wing 14 a that extends left and right at the rear portion. Both the wings 14a are retreated backward, and at least the front end edge has a shape retreated backward in the traveling direction like a retreating wing.
A disc coulter 17 is attached to the front end portion of the intermediate bracket 11 via an arm 16. The disc coulter 17 is grounded in front of the traveling direction of the knife beam 13, and the disc coulter 17 is connected to the soil surface portion. The knife beam 13 can be moved with little resistance along the slit formed in (1).
[0015]
Further, as shown in FIGS. 1 to 4, an injector 18 is disposed behind the pair of left and right knife beams 13, 13, and the injector 18 causes the slurry from the slurry tank 4 to be directed substantially downward. As is apparent from FIG. 4, it has a pair of brackets 18a extending parallel to the front, and the knife beam 13 is sandwiched between the brackets 18a, and a knife is formed by bolts 18b, nuts 18c and washers 18d. It is fastened to the beam 13.
The intermediate member 19 is fastened together with the bolt 18b and the like to the bracket 18a. As shown in FIG. 4, the intermediate member 19 includes a fastening portion 19a fastened to the bracket 18a and the fastening portion 19a. A detouring portion 19b that continuously detours around the injector 18 and a mounting portion 19c that extends downward continuously from the rear end of the detouring portion 19b.
[0016]
Further, as shown in FIGS. 2 to 4, a second wing 21 is attached to the attachment portion 19 c of the intermediate member 19. The second wing 21 is located behind the injector 18 and above the wing 14a of the chisel 14, and is positioned higher than the discharge port of the injector 18, in other words, higher than the discharge port. ing. In this description, the second wing refers to an example in which the chisel 14 is also equipped with the wing 14a. When the chisel 14 is equipped with a bullet without the wing 14a, The name 2 becomes unnecessary.
The wing 21 has a pair of brackets 21a extending substantially upward and parallel to the center of the front end portion thereof. The bracket 21a sandwiches the mounting portion 19c of the intermediate member 19, and two bolts 21b ₁ and 21b ₂ , a nut 21c and a washer. Fastened by 21d. That is, the second wing 21 is fixed to the knife beam 13 by a bolt or the like by the intermediate member 19.
[0017]
The two bolts 21b ₁ and 21b ₂ for fixing the second wing 21 to the knife beam 13 are arranged at intervals in the vertical direction. As shown in FIG. 5, the lower bolt 21b ₁ insertion holes 21e formed in the bracket 21a so as to insert the are circular holes, also an insertion hole 21e formed in the bracket 21a has a circular hole of diameter slightly larger than the bolt 21b _1. Further, an insertion hole 21f puncture are given in the bracket 21a for inserting the bolts 21b ₂ has a long hole which becomes the shape along the curvature centered on the lower side of the insertion hole 21e. As a result, the second wing 21 can adjust the tilt state by rotating the rear end portion thereof up and down around the bolt 21b ₁ .
[0018]
Further, as is clear from FIG. 5B, the left and right side edge portions 21g of the second wing 21 have a letter “F” shape as viewed from the front end, and form an enclosure space K inside.
The enclosure space K is a space where the slurry ejected from the injector and the crushed soil are mixed. If the slurry exists as a liquid, the enclosure space K may overflow depending on the work environment. By mixing with crushed soil at K, the viscosity can be increased and the fluidity can be reduced. In this case, even if the left and right side edges 21g are flat, they function sufficiently depending on the properties of the soil. However, when the slurry is not dispersed in the surroundings, the slurry is more easily mixed with the soil pulverized by the knife beam and the fluidity of the slurry. Can be reliably and rapidly reduced.
[0019]
Next, a slurry supply system for the injector 18 will be described.
As shown in FIGS. 1 and 2, a hollow branch portion 23 is attached to an upper space position of the mast 8 via a bracket 22. The branch portion 23 is formed with a supply port 23a through which slurry is supplied and two outlets 23b through which the slurry taken in is sent. The supply port 23a is connected to the slurry tank 4 through the flexible pipe 25 and through an on-off valve (not shown). Both outlets 23b are connected to each injector 18 through a flexible tube 26. The pump that pumps the slurry in the slurry tank 4 is used by reversing the phase of the vacuum pump that uses the slurry for suction. Thus, the inside of the tank only needs to be pressurized and can be used for suction and discharge. In the state where this pump is operated, the slurry is supplied to and shut off from the slurry tank 4 to the injector 18 by selecting and operating the port of the on-off valve remotely from the tractor or manually.
[0020]
The center of the supply port 23a of the branch portion 23 is slightly lower than the center of the internal space. Therefore, the slurry supplied to the inside of the branch portion 23 through the supply port 23a is given a rotational motion and distributed to the left and right outlets 23b.
[0021]
Next, the function of raising and lowering the front part of the slurry tank 4 will be described.
That is, as shown in FIGS. 1 and 2, a hydraulic cylinder 28 is provided at the rear portion of the subsoiler 1. The hydraulic cylinder 28 can be expanded and contracted in the vertical direction. The output rod 28a is on the upper side, and the lower end is pivotally attached to the rear part of the frame 6 as the apparatus main body. The tip of the output rod 28a of the hydraulic cylinder 28 is pivotally attached to the tip of the lifting shaft 30, and the expansion / contraction of the output rod 28a moves the lifting shaft 30 up and down. For example, a pipe having a square cross section is used as the elevating shaft 30, and the elevating shaft 30 is attached to the frame 6 so as to be movable up and down. An upper end portion of the elevating shaft 30 is connected to a connecting member 31. The lower ends of the lift shafts 30 are connected to each other by a block-like hitch 32. As shown in FIG. 2, the towing bar 3a of the bacium car 2 is connected to the hitch 32 by a pin 33. ing. Accordingly, by operating an operation switch or the like, hydraulic pressure from a hydraulic pump (not shown) is applied to the hydraulic cylinder 28 and the output rod 28a is extended to raise the hitch 32 and raise the front end of the slurry tank 4. As a result, the posture is tilted backward (lower back) and is suitable for movement on the road. In order to release this posture, a reverse hydraulic pressure is supplied.
[0022]
Next, actual work using the subsoiler work machine according to the present invention will be described.
Prior to the work position on the field, the subsoiler 1 is placed in a Bakyumka-2 traction state, and the subsoiler is attached by a three-point link mechanism of the tractor. When movement starts with the subsoiler 1 lowered to the field surface, the knife beam 13 cuts deeply into the soil by the suction function and starts soil crushing work. Up to this point, it is not different from the conventional subsoiler.
[0023]
At this time, by driving a pump mounted on the barium car 2, slurry is supplied to the injector 18 through the on-off valve, the flexible pipe 25, the branch portion 23, and the flexible pipe 26.
The slurry ejected from the injector 18 is supplied to the space of the slit formed by the wing 14a, the chisel 14 and the knife beam 13. At this time, the slurry is supplied to the lower side of the passing position of the second wing 21. The slurry is mixed with the surrounding soil crushed in the containing space K and has a high viscosity, in other words, the fluidity is lowered and the jet pressure is reduced.
[0024]
Then, the slurry injected into the soil as described above is mixed with the surrounding soil by the second wing 21 to increase the clay, and the ejection to the ground is suppressed.
In addition, since the spray pressure of the slurry discharged from the injector 18 is sufficiently suppressed by the fixed second wing 21, the slurry can spray upward even when the soil pressure due to the soil covering is small. There is no risk of erupting on the ground surface.
[0025]
In addition, the space formed in the soil by the chisel 14 is immediately crushed by the crushing action of the fixed second wing 21 to reliably promote the mixing of the slurry with the surrounding soil. Therefore, since the slurry is reliably mixed with the soil even in a work environment with a climbing slope, it does not flow into the valleys in the wavy land and form a soft zone.
Further, since both side edge portions 21g of the second wing 21 are inclined downward to form a slurry containing space K, the spray pressure of the slurry is effectively suppressed, and the slurry is prevented from coming out toward the field surface. Is done.
Further, since the second wing 21 can adjust the tilt posture by moving the rear end thereof up and down with the front end thereof as a fulcrum, the maximum jet pressure suppression effect can be obtained by setting the angle.
[0026]
【The invention's effect】
As is clear from the above description, according to the subsoiler working machine of the present invention, the slurry is supplied to the deep position of the soil by the injector, mixed with the surrounding soil, the viscosity is increased, and the slurry is ejected to the field surface. Is suppressed.
In addition, the wing located behind the injector outlet prevents slurries ejected from the injector, so that even if the earth pressure due to soil covering is small, the jet pressure may not escape upward and may be ejected to the ground surface. There is no.
Further, the space formed by the chisel is surely crushed by the crushing action of the wing located at the rear of the slurry outlet, so that the slurry does not flow down even in an uphill work environment.
Further, since both side edges of the wing are inclined slightly downward to form an enclosure space, it is extremely effective in suppressing the spray pressure of the slurry.
Furthermore, since the inclination of the second wing can be adjusted by adjusting the rear end of the second wing up and down, it is possible to select an effective posture for preventing slurry ejection in relation to the soil.
[Brief description of the drawings]
FIG. 1 is a perspective view of a subsoiler portion of a subsoiler working machine according to the present invention.
FIG. 2 is a side view of a subsoiler working machine according to the present invention.
FIG. 3 is a perspective view showing an injector, a second wing and the like of the subsoiler work machine.
4 is an exploded perspective view showing the direction of FIG. 3 reversed. FIG.
FIG. 5 is a diagram showing details of a second wing of the subsoiler work machine according to the present invention.
FIG. 6 is a side view of a conventional soil working machine.
7 is a diagram showing a working state of a main part of the soil working machine shown in FIG. 6;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Subsoiler 2 Bacium car 3 Car body 4 Slurry tank 6 Frame 8 Mast 9 Side bracket 11 Intermediate bracket 13 Knife beam 14 Chisel 14a Wing 17 Disk coulter 18 Injector 19 Intermediate member 21 Second wing 23 Branch part 25, 26 Flexible pipe 28 Hydraulic pressure Cylinder 30 Lifting shaft 31 Connecting member 32 Hitch 32 Pin

Claims (3)

A subsoiler having at least a knife beam, a tow mounted on the subsoiler, and a car tank having a slurry tank mounted on the vehicle body, the subsoiler is disposed along the knife beam, and the discharge port is located at the rear side and the lower side in the working direction. In a subsoiler working machine for injecting slurry into the soil that is configured to eject the slurry supplied from the slurry tank of the Bakium car from the injector.
It was located above the discharge port of the injector of the slurry and rearward, and it was ejected with a wing with one end fixed directly or indirectly to the knife beam so that the posture did not change during work. The slurry is mixed with the soil crushed by the wing in the space under this wing, and the viscosity becomes high , and the slurry is injected into the soil so that the slurry can be prevented from flowing to the field surface. Subsoiler work machine. 2. The subsoiler working machine for injecting slurry into soil according to claim 1 , wherein both wing edges are inclined downward including diagonally downward to form a space therein. The wings, the slurry of claim 1 or claim 2, wherein that it is fixed to the rear end to the non-operation at its fixed end portion is allowed to adjust the rotation to allow the posture change in the vertical direction Subsoiler work machine that is injected into the soil.

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