JP3918029B2 - Soil disinfector - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a soil disinfecting machine that injects a chemical solution into a field before cultivating horticultural crops or vegetables.
[0002]
[Prior art]
Conventionally, in a soil disinfecting machine for disinfecting soil by attaching it to a traction device arranged at the rear of a tractor, a chemical injection claw for injecting a chemical into the soil, or a chemical solution by suppressing the pressure after injecting the chemical A pressure-reducing wheel for sealing is fixed to the main body of the soil disinfecting machine, and a chemical nozzle for injecting the chemical into the soil is attached to the chemical injection nail.
[0003]
[Problems to be solved by the invention]
However, when there is an obstacle in the soil, there is a problem that the obstacle is deformed when a chemical injection nail fixed to the body hits the obstacle. In particular, if the obstacle is hard and large, such as a stone, the chemical injection nail may be significantly damaged and must be replaced. In addition, the conventional chemical injection nail and pressure wheel are fixed to the soil disinfector body, so it is not possible to follow the curving work at the edge of the shore and the uninjected area remains in a wide area. was there. Furthermore, depending on the type of crop, soil plowing condition, temperature, type of chemical, etc., in order to bring out the effect of the chemical sufficiently, if you want to change the injection depth or inject multiple types of chemicals at different heights However, there is a problem that it cannot be easily changed with a conventional fixed chemical nozzle. The present invention solves such a problem, and even if there is an obstacle in the soil, the chemical injection nail is not damaged, and the chemical is injected evenly and widely regardless of the condition of the soil. It is intended to provide a soil disinfectant that can be used.
[0004]
[Means for Solving the Problems]
The problems to be solved by the present invention are as described above. Next, means for solving the problems will be described.
[0005]
In claim 1, in the soil disinfector (2) towed to the rear part of the tractor (1), the front part is a mounting part (25), the rear part is a working part (26), and the mounting part (25) is a wheel (3 ), A chemical tank (8), and a chemical pump (12), a chemical injection claw (4) and a pressure reducing wheel (18) are arranged in the working part, the working part (26) and the mounting part (25). ) Is provided with an injection claw retraction mechanism (19) that retreats upward when the chemical liquid injection claw (4) receives an excessive load during traction. The injection claw retraction mechanism (19) Supports the stay (20) for attaching the liquid injection claw (4) and the pressure reducing wheel (18) to the support stay (23) of the soil disinfector (2) so as to be rotatable. The part abuts on the retracting stay (22) pivotally supported by the support stay (23), and the retracting stay (22) It is obtained by a configuration to urge the working position side at the member (21).
[0006]
According to Claim 2, in the soil disinfecting machine according to Claim 1, when the chemical liquid injection claw (4) is in the retracted position on the support stay (23) portion of the injection claw retraction mechanism (19), the chemical liquid pump it is provided with a switch (60) to stop driving of (12).
[0007]
In the third aspect of the present invention, in the soil disinfector according to the first aspect, a U-shaped support member (35) in a side view is fixed to the left and right center of the mounting portion (25), and the support member (35) The swing support member (34) is inserted into the rear from the rear, the overlapping portion of the swing support member (34) and the support member (35) is pivotally supported by the swing pin 37, and the working portion (26) is mounted. It is connected to the mounting portion (25) so as to be able to swing left and right .
[0008]
In a fourth aspect of the present invention, in the soil disinfecting machine according to the first aspect, the chemical liquid nozzle attached to the chemical liquid injection claw (4) includes a lower nozzle (29) having a lower discharge port (29a) and a discharge port ( 28a) is composed of an upper nozzle (28) positioned above, and the depth of the discharge port (28a) of the upper nozzle (28) can be adjusted .
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of the present invention will be described. 1 is a perspective view of a soil disinfector according to the present invention, FIG. 2 is also a side view, FIG. 3 is also a plan view, FIG. 4 is also a front view, and FIG. 6 is an explanatory view of the situation after retraction, FIG. 7 is an enlarged side view of the chemical liquid injection claw, and FIG. 8 is a perspective view of the chemical nozzle.
[0010]
First, the whole structure of the soil disinfection machine concerning this invention is demonstrated with reference to FIG. 1 thru | or FIG. A top link mast 5 is provided at the front end of the mounting part 25 of the soil disinfecting machine 2, and the upper end of the top link mast 5 is connected to the rear part of the top link 9 of the work machine mounting apparatus of the tractor 1. The front ends of the front and rear rods 15 and 15 are connected and fixed to the lower ends, and the rear ends of the lower links 7 and 7 are pivotally connected to the left and right pins 10 and 10 protruding outward from the front ends of the front and rear rods 15. In addition, the soil disinfecting machine 2 is configured to be supported and towed reliably at three points on the work equipment mounting device of the tractor 1 so as to be lifted and lowered.
[0011]
A support rod 30 is erected from the middle part of the front and rear rod 15, and a U-shaped mounting bracket 32 is fixed to the upper outer surface of the support rod 30, and the mounting bracket 32 and the support rod 30 are fixed. A wheel support member 31 that rotatably supports the gauge wheel 3 at its lower end is inserted between the two. A plurality of mounting holes 31a, 31a,... Are provided at an upper portion of the wheel support member 31, and a pair of left and right mounting holes (not shown) are provided in the mounting bracket 32 so that bolts can be inserted. The wheel support member 31 is slid up and down and fastened and fixed with bolts at an arbitrary height so that the depth of injection into the field can be adjusted.
[0012]
A horizontal rod 16 is placed between the left and right support rods 30, 30, a plurality of chemical pumps 12, 12 on the horizontal rod 16, and a motor serving as a drive source for driving the chemical pumps 12, 12. 13 is mounted, and a chemical solution outflow confirmation meter 38, 38 is disposed above the chemical liquid pump 12, and the outflow confirmation meter 38, 38 is supported by the horizontal saddle 16 via a pole 39. Further, support rods 40 and 40 project outwardly from the rear portions of the left and right front and rear rods 15, and stays 41 and 41 extend rearward and obliquely upward from the tip portions of the support rods 40 and 40. At the upper ends of the stays 41 and 41, chemical liquid tank mounting tables 42 and 42 are fixed, and the chemical liquid tanks 8 and 8 are mounted on the chemical liquid tank mounting tables 42 and 42, respectively. The chemical liquid tanks 8 and 8 are connected to the chemical liquid pumps 12 and 12 via hoses, and the chemical liquid is sucked by the chemical liquid pumps 12 and 12 and will be described later via the outflow confirmation meters 38 and 38 and the liquid supply pipe 14. It communicates with the nozzle.
[0013]
A connecting portion 27 having an injection claw retracting mechanism 19 according to the present invention is disposed behind the mounting portion 25 having such a configuration so as to be able to swing left and right, and behind the connecting portion 27 is a chemical injection nail 4. And a pressure-reducing wheel 18 are integrally provided so that the working portion 26 can swing up and down, and upper and lower nozzles 28 and 29 are provided on the back surface of the chemical solution injection claw 4 so as to be set to a predetermined depth. ing. In other words, the chemical liquid fed from the mounting portion 25 is sent to the chemical liquid injection claw 4 through the liquid supply pipe 14, and the chemical liquid is fed into the soil from the upper and lower nozzles 28 and 29 attached to the chemical liquid injection claw 4. It is possible to inject.
[0014]
As shown in FIG. 4, a driving shaft (not shown) is passed through the chemical pumps 12 and 12 and connected to a single motor 13, and the two chemical pumps 12 and 12 are driven by the single motor 13. The motor 13 is provided with a knob capable of changing the rotational speed so as to control the discharge amount. The motor 13 is configured to use an electric motor or the like. Therefore, since the torque from the grounding wheel is not used as the driving force as in the past, it is not affected by the soil condition of the field, the degree of inclination or unevenness of the soil surface, or the traveling speed at all, and always has a constant pressure. In addition, the chemical solution can be pumped, and even during the disinfection operation, it can be quickly changed to a chemical solution discharge amount suitable for the field and crops.
[0015]
Further, as shown in FIGS. 2 and 3, a U-shaped support member 35 is fixed to the front surface of the support lateral bar 17 at the substantially right and left sides. A triangle-shaped swing support member 34 is inserted from the rear in a letter shape and a plan view, and a swing pin 37 is swingable to the left and right at the approximate center of the overlapping portion of the swing support member 34 and the support member 35. It is designed to be pivotally supported. Accordingly, the rear portion of the swing support member 34, that is, the connecting portion 27 and the working portion 26 can be turned left and right around the swing pin 37. Even if the chemical injection nail 4 hits an obstacle in the soil and the obstacle is minor, the chemical injection nail 4 can escape to the left or right, and the chemical injection nail 4 is not overloaded. Even when the vehicle travels on a curve or suddenly changes the course, the working unit 26 can quickly follow the traveling, and can greatly improve the accuracy of the chemical injection range. The support member 35 and the swing support member 34 can be fastened and fixed by the left and right lock bolts 36 and 36 so that the working unit 27 does not suddenly turn to the left or right during transfer. I have to.
[0016]
Further, support stays 23, 23 project rearward from the rear surface of the swing support member 34, and swing pins 43 are pivotally supported on the rear portions of the support stays 23, 23. The front portions of the left and right support stays 44 and 44 are pivotally supported at both ends of the swing pin 43. A stay 46 having a square shape when viewed from the side is fixed to the rear portion of the stay 20. A rod 47 is slidably inserted into the center of the upper surface of the stay 46, and the lower end of the rod 47 is attached to a support rod 49. The support rod 49 is pivotally supported so as to be able to rotate back and forth substantially at the center of the left and right. The support rod 49 is horizontally mounted on the front portion of the frame 45 that pivotally supports the pressure reducing wheel 18, and the support stay 44 is disposed on the front portion of the frame 45.・ It is fixed to the rear part of 44. Furthermore, the upper part of the chemical solution injection claw 4 is fastened and fixed to the rear part of the stay 20 by bolts. A spring 48 is interposed between the stay 46 and the support rod 49 so that the pressure reducing wheel 18 can be pressed against the field with a constant pressure so that the pressure can be uniformly reduced. That is, the medicinal solution injection claw 4 and the pressure reducing wheel 18 are configured so as to be rotatable up and down around the swing pin 43.
[0017]
On the other hand, a retracting stay 22 that is rotatable about a pin 51 is disposed in front of the stay 20, and the rear end of the retracting stay 22 is brought into contact with the front end of the stay 20, and from the front end of the retracting stay 22. A pressure-reducing wheel holding rod 24 is erected, and a spring 21 is interposed between the pressure-reducing wheel holding rod 24 and the support stay 23 as an elastic member. Therefore, as shown in FIG. 5, during the work, the retracting stay 22 is attached so that the rear end of the retracting stay 22 abuts the front end of the stay 20 by the biasing force of the spring 21 and the stay 20 is horizontal. The work position is maintained.
[0018]
In addition, when there is an obstacle 52 such as a stone in the soil and the chemical solution injection claw 4 hits, it is pushed backward and pivots upward around the rocking pin 43 together with the pressure reducing wheel 18, and the obstacle 52 is If it can be avoided, it returns to the working position by the urging force of the spring 21, and if it cannot be avoided, the stay 20 and the retracting stay 22 rotate against the urging force of the spring 21 as shown in FIG. When the dead center is exceeded, the retracting stay 22 is rotated until it comes into contact with the stopper 53 to be in the retracted posture state. In this state, the chemical solution injection claw 4 is located above the soil, the lower surface of the pressure reducing wheel 18 is also held by the upper end of the pressure reduction wheel holding rod 24, and the chemical solution injection claw 4 is automatically retracted to the breakage preventing position. It is a composition.
[0019]
Then, after avoiding the obstacle 52, the pressure-reducing wheel holding rod 24 is rotated forward to return the chemical injection claw 4 and the pressure-reducing wheel 18 to the original working positions, so that the work can be easily continued. Further, the pressure-retaining wheel holding rod 24 can be rotated rearward, and the chemical solution injection claw 4 and the pressure-reducing wheel 18 can be rotated upward and held at the stored positions to facilitate movement, maintenance, and the like.
[0020]
When the chemical injection claw 4 is pushed backward against the obstacle 52 and rotated upward together with the pressure reducing wheel 18, the discharge ports of the upper and lower nozzles 28 and 29 are turned upward, and at this time, the chemical pump 12 is in a driving state. If there is, it will be scattered in the atmosphere. Therefore, a limit switch 60 is provided at the rear lower end of the support stay 23, a sensor portion 60a is extended rearward from the limit switch 60, and the front lower end of the stay 20 is in contact with the sensor portion 60a. The chemical liquid pump 12 is configured to be driven only in FIG. That is, when the chemical solution injection claw 4 rotates upward together with the pressure reducing wheel 18 and reaches the breakage prevention position, the lower end of the front portion of the stay 20 is separated from the sensor unit 60a, the chemical solution pump 12 stops driving, and the chemical solution is in the atmosphere. It is possible to completely prevent spraying.
[0021]
Next, the upper nozzle 28 and the lower nozzle 29 for injecting the chemical liquid will be described with reference to FIGS. Movable nozzle guides 54 are provided at two locations on the back surface of the chemical injection claw 4 at approximately the center in the vertical direction. The movable nozzle guide 54 is fixed to the cylindrical fixed portion 54a and the side surfaces of the fixed portion 54a. The cylindrical slide portion 54b is provided, and guide holes 54c and 54d are opened in the axial direction of the slide portion 54b and the fixed portion 54a, respectively, and at the same time, a bolt hole is formed on the side surface of the slide portion 54b. 54e is opened. On the other hand, a fixed nozzle guide 57 is provided at one position at the lower end portion on the back surface of the chemical liquid injection claw 4, and the fixed nozzle guide 57 is composed of only a cylindrical fixed portion, Similarly to the movable nozzle guide 54, a guide hole 54d is opened.
[0022]
In such a configuration, the lower nozzle 29 is inserted and fixed in the guide hole 54d opened continuously to the fixed portion 54a of the movable nozzle guide 54 and the fixed nozzle guide 57, and the discharge port 29a is formed at the lower end of the lower nozzle 29. By opening backward, the chemical solution injection claw 4 can inject the chemical solution into a deep part while excavating a groove in the soil. The upper nozzle 28 is inserted into the guide hole 54c of the slide portion 54b of the movable nozzle guide 54 and then screwed into the bolt hole 54e from the side via a nut 56, and the tip of the bolt 55 is inserted. The upper nozzle 28 can be pressed and fixed. A discharge port 29a is opened rearward at the lower end of the upper nozzle 28, and the upper nozzle 28 is slid and fixed by inserting and removing the bolt 55 so that the depth of the discharge port 29a can be adjusted. . Therefore, unlike a conventional liquid nozzle with a fixed injection depth, the depth of the discharge port 28a of the upper nozzle 28 can be freely changed, so that an appropriate liquid chemical is available according to the type of crop, the tillage state of the soil, and the like. The injection depth can be set.
[0023]
【The invention's effect】
Since the present invention is configured as described above, the following effects can be obtained.
In claim 1, in the soil disinfector to be pulled to the rear part of the tractor, in the soil disinfecter to be pulled to the rear part of the tractor, the front part is a mounting part and the rear part is a working part, Wheels, chemical tanks and chemical pumps are installed, chemical injection claw and pressure reducing wheel are arranged in the working part, and the chemical injection claw is excessive when towing the connecting part connecting the working part and the mounting part. An injection claw retraction mechanism that retreats upward when a load is applied is provided, so that even when a chemical injection nail hits a hard object such as a stone in the soil during the soil disinfection work, it retreats upward and breaks the nail Thus, the life of the chemical liquid injection claw can be extended and the cost of replacement parts can be reduced, and the frequency of replacement of the chemical liquid injection claw can be increased and workability can be improved. In addition, a large load is not applied to the tractor for towing.
[0024]
Further, the injection claw retracting mechanism rotatably supports a stay for attaching the chemical liquid injection claw and the pressure reducing wheel to a support stay, and abuts the front portion of the stay with a retraction stay pivotally supported by the support stay. Since the stay is biased to the working position side by the elastic member, the injection claw can be retracted with a simple mechanism, and the cost of the product can be reduced and the assemblability can be improved.
Further, by disposing the elastic member so as to exceed the dead point, the working portion can be maintained at the position where it is stored upward, and the storage can be facilitated.
[0025]
According to the second aspect of the present invention, since the support stay 23 of the injection claw retracting mechanism according to the first aspect is provided with a switch for stopping the driving of the chemical pump when the chemical injection claw is at the retracted position, the upper and lower nozzles at the retracted position It is possible to completely prevent the spraying of chemicals into the atmosphere.
[0026]
In the third aspect of the present invention, in the soil disinfector according to the first aspect, a U-shaped support member (35) in a side view is fixed to the left and right center of the mounting portion (25), and the support member (35). The swing support member (34) is inserted into the rear from the rear, the overlapping portion of the swing support member (34) and the support member (35) is pivotally supported by the swing pin 37, and the working portion (26) is mounted. Since it is connected to the mounting part (25) so as to be able to swing left and right, if there is a slight load such as a stone or a hard tiller in the soil, it can swing to the left and right to protect the chemical injection nail, Furthermore, it is possible to sufficiently follow the curve work at the time of cutting and the like, and the occurrence of an uninjected region can be prevented.
[0027]
According to a fifth aspect of the present invention, in the soil disinfecting machine according to the first aspect, the chemical liquid nozzle attached to the chemical liquid injection claw is composed of a lower nozzle having a discharge port positioned below and an upper nozzle having a discharge port positioned upward. Since the depth of the upper nozzle discharge port is adjustable, it is possible to set an injection depth suitable for the type of crop, the type of chemical, the tillage condition of the soil, etc., and greatly improve the disinfection effect. Can do.
[Brief description of the drawings]
FIG. 1 is a perspective view of a soil disinfecting machine according to the present invention.
FIG. 2 is a side view of the same.
FIG. 3 is also a plan view.
FIG. 4 is a front view of the same.
FIG. 5 is an explanatory diagram of a situation before retraction of the injection claw retraction mechanism.
FIG. 6 is also an explanatory diagram of the situation after evacuation.
FIG. 7 is an enlarged side view of a chemical injection nail.
FIG. 8 is a perspective view of a chemical nozzle.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Tractor 2 Soil disinfector 3 Wheel 4 Chemical solution injection nail 8 Chemical solution tank 12 Chemical solution pump 13 Electric motor 18 Pressure reducing wheel 19 Injection nail retraction mechanism 22 Driven joint 25 Mounting part 26 Working part 27 Connection part 28 Upper nozzle 28a Discharge port 29 Lower nozzle 60 switches

Claims (4)

In the soil disinfector (2) towed to the rear part of the tractor (1), the front part is the mounting part (25), the rear part is the working part (26), and the wheel (3) and the chemical tank (8 ) And a chemical pump (12), a chemical injection claw (4) and a pressure-reducing wheel (18) are arranged in the working part, and the working part (26) and the mounting part (25) are connected to each other. the connecting portion (27), liquid injection pawl (4) is retracted upward when subjected to an excessive load during towing injection pawl retracting mechanism (19) is provided, infusion Nyutsume retraction mechanism (19) is liquid injection pawl ( 4) and a stay (20) for attaching the pressure wheel (18) are rotatably supported on a support stay (23) of the soil disinfector (2), and the front portion of the stay (20) is supported on the support stay (23). 23) is in contact with the retracting stay (22) pivotally supported by 23), and the retracting stay (22) is made of the elastic member (21). Soil disinfection machine is characterized in that a structure for biasing the position. The soil disinfecting machine according to claim 1, wherein when the chemical solution injection claw (4) is in the retracted position on the support stay (23) of the injection claw retracting mechanism (19), the chemical solution pump (12) is driven. A soil disinfector provided with a switch (60) for stopping . The soil disinfector according to claim 1, wherein a support member (35) having a U-shape in a side view is fixedly provided at a substantially right and left center of the mounting portion (25), and a swing support member (35) is attached to the support member (35). 34) is inserted from the rear, and the overlapping portion of the swing support member (34) and the support member (35) is pivotally supported by the swing pin 37, and the working portion (26) is mounted on the mounting portion (25). A soil disinfection machine characterized by being connected to be swingable to the left and right . 2. The soil disinfector according to claim 1, wherein the chemical nozzle provided to the chemical injection nail (4) includes a lower nozzle (29) having a discharge port (29 a) located below and a discharge port (28 a) located above. The soil disinfector characterized in that the depth of the discharge port (28a) of the upper nozzle (28) can be adjusted .

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