Chemical injection claw and soil disinfection machine

Abstract

To provide a chemical injection claw capable of preventing residues in soil from being caught.SOLUTION: A chemical injection claw 53 attached to a machine body of a soil disinfection machine 1 for injecting chemical solution into soil, comprises a support part 531 supported by the machine body, and a claw part 532 connected to the support part 531 and being inserted into the soil, where the claw part 532 includes a blade surface 5321 facing forward in a travel direction of the machine body and extending in the vertical direction, and an upper end of the blade surface 5321 protrudes forward beyond the support part 531, the blade surface 5321 inclining rearward from the upper end toward the lower end.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a chemical injection claw and a soil disinfection machine. [Background technology]

[0002] BACKGROUND ART As disclosed in Patent Document 1, a soil disinfecting machine has been known which is towed by a vehicle such as a tractor and which injects a chemical solution into the soil of a field for cultivating horticultural crops, vegetables, and the like.

[0003] The soil disinfection machine is equipped with a chemical injection claw that is inserted into the soil and injects a chemical solution into the soil. The chemical injection claw has a support part that is supported on the body of the soil disinfection machine and a claw part that is connected to the support part, and the claw part extends downward from the lower end of the support part. The front of the claw part in the direction of travel of the body of the machine extends vertically downward from the lower end of the support part and then has a shape that is inclined backward. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2011-55804 Summary of the Invention [Problem to be solved by the invention]

[0005] When a soil disinfection machine injects chemicals into the soil in a field, if there is any residue that has not been adequately treated remaining in the soil, the residue may get caught on the claws of the chemical injection claws and be dragged along.

[0006] If residues in the soil are dragged by the injection claws, large grooves will be formed in the field where the injection claws left marks, and the injected chemical solution may escape from the grooves, reducing the effectiveness of the chemical solution.

[0007] In addition, one way to prevent residue from getting caught in the chemical injection tines is to increase the number of rotary tillage operations to thoroughly process the residue, but this increases the amount of work and makes it more complicated.

[0008] Therefore, the present invention provides a chemical injection claw and a soil disinfectant that can prevent residues in the soil from getting caught. [Means for solving the problem]

[0009] The chemical injection claw and soil disinfection machine that solves the above problems have the following features.

[0010] In other words, the chemical injection claw is attached to the body of the soil disinfection machine and is used to inject chemical solution into the soil, and comprises a support part supported on the body, and a claw part connected to the support part and inserted into the soil, the claw part facing forward in the direction of travel of the machine and having a blade surface extending in the vertical direction, the upper end of the blade surface protruding forward beyond the support part, and the blade surface inclining backward as it moves from the upper end to the lower end.

[0011] This allows the angle of inclination of the blade surface toward the rear to be increased, so that even if residue remains in the soil, the residue can be pushed downward into the soil, preventing the residue from getting caught on the chemical injection claw and being dragged along.

[0012] Furthermore, the lower end of the blade surface is located rearward of the support portion in the traveling direction of the machine body.

[0013] This allows the angle of inclination of the blade surface toward the rear to be increased, making it possible to effectively prevent residue from getting caught.

[0014] The blade surface is formed in an arc shape that is convex toward the front in the traveling direction of the machine body.

[0015] This makes it easier to push the residue into the soil, effectively preventing the residue from getting caught.

[0016] The soil disinfection machine also includes a chemical injection claw as described in any one of claims 1 to 3, a body that supports the chemical injection claw, a chemical tank that stores the chemical solution, a chemical injection nozzle that is fixed to the chemical injection claw and that injects the chemical solution into the soil, and a chemical pump that pressure-feeds the chemical solution stored in the chemical tank to the chemical injection nozzle.

[0017] This allows the angle of inclination of the blade surface of the chemical injection claws equipped on the soil disinfectant machine toward the rear to be increased, so that even if residue remains in the soil, the residue can be pushed downward into the soil, preventing the residue from getting caught on the chemical injection claws and being dragged along. [Effects of the Invention]

[0018] According to the present invention, it is possible to prevent residue from being caught on the chemical solution injection claw and being dragged along. [Brief explanation of the drawings]

[0019] [Figure 1] FIG. 1 is a side view showing a soil disinfecting machine. [Figure 2] FIG. 1 is a plan view showing a soil disinfection machine. [Figure 3] FIG. 2 is a rear view showing the soil disinfecting machine. [Figure 4] FIG. 1(a) is a side view showing the chemical solution injection claw, and FIG. 1(b) is a rear view showing the chemical solution injection claw. [Figure 5] FIG. 10 is a bottom view showing the chemical solution injection claw. [Figure 6] FIG. 10 is a side view showing a chemical solution injection claw whose blade surface is formed in a shape that linearly slopes backward from the upper end to the lower end. DETAILED DESCRIPTION OF THE INVENTION

[0020] Next, an embodiment of the present invention will be described with reference to the accompanying drawings.

[0021] The soil disinfection machine 1 shown in Figures 1 to 3 is one embodiment of a soil disinfection machine equipped with chemical solution injection claws according to the present invention, and is used by being attached to the rear of a traveling vehicle such as a tractor. The soil disinfection machine 1 injects chemical solution into the soil in a farm field using the chemical solution injection claws 53.

[0022] In the following explanation, the "left-right direction," "left side," and "right side" in Figure 1 are defined as the "travel direction," "front side," and "rear side" of the soil disinfection device 1, respectively, and the "left-right direction," "left side," and "right side" in Figures 2 and 3 are defined as the "width direction," "left side," and "right side" of the soil disinfection device 1, respectively. Furthermore, the "upper side," "upper side," and "lower side" in Figures 1 and 3 are defined as the "upper-down direction," "upper side," and "lower side" of the soil disinfection device 1, respectively.

[0023] The "up and down direction" in Figure 2 is the "direction of travel" of the soil disinfection device 1, and the "upper side" and "lower side" in Figure 2 are respectively the "front side" and "rear side" of the soil disinfection device 1. The direction of travel of the soil disinfection device 1 and the front and rear direction of the soil disinfection device 1 coincide, and the width direction of the soil disinfection device 1 and the left and right direction of the soil disinfection device 1 coincide.

[0024] [Soil disinfection machine] The soil disinfection machine 1 is configured to be towed by a traveling vehicle such as a tractor, and is capable of injecting chemical solution into the soil of the field and then laying a mulch film 67 over the field. The soil disinfection machine 1 comprises a connecting section 10, a support section 20, a chemical solution pressure-feeding section 30, a chemical solution injection section 50, and a mulching section 60.

[0025] (Connection part) The connecting part 10 is a part that is connected to a traveling vehicle such as a tractor, and is connected to, for example, a tillage implement provided on the tractor. The connecting part 10 has a main frame 12, side frames 13, a fitting member 14, a lever support member 15, an adjustment frame 16, and a height adjustment lever 17. The connecting part 10 forms the body of the soil disinfection machine 1.

[0026] The main frame 12 is formed of a rectangular pipe member and is arranged with its longitudinal direction aligned with the width direction. The side frames 13 are formed of plate-like members that face the width direction and whose longitudinal direction is the direction of travel. A pair of side frames 13 is provided on the left and right.

[0027] The rear ends of the side frames 13 are fixed to the center in the width direction of the main frame 12. The side frames 13 extend forward from the main frame 12. The fitting member 14 is formed by bending a plate-shaped member so that it is roughly C-shaped when viewed in the width direction. The fitting member 14 is fixed to the front end of the side frame 13 with the open side of the roughly C-shape facing forward.

[0028] The fitting member 14 is fitted to a beam B that is installed horizontally at the rear of the tillage implement equipped on the tractor, and is fixed with bolts, etc. By fixing the fitting member 14 to the beam B, the connecting part 10 is connected to the tillage implement of the tractor.

[0029] The lever support member 15 is fixed to the rear surface of the main frame 12, at the center in the width direction of the main frame 12. The adjustment frame 16 is formed of a cylindrical member extending in the vertical direction and is fixed to the lever support member 15. A pair of adjustment frames 16 are provided, one on the left and one on the right. The adjustment frames 16 extend downward from both the left and right ends of the lever support member 15.

[0030] The height adjustment lever 17 is rotatably inserted into the lever support member 15. The height adjustment lever 17 is inserted into the lever support member 15 from above, and the lower end of the height adjustment lever 17 protrudes downward from the lever support member 15. A screw is formed at the lower end of the height adjustment lever 17.

[0031] (Support part) The support section 20 includes a support frame 21 and a support plate 22. The support frame 21 is formed from a square-shaped pipe member and is disposed with its longitudinal direction aligned with the width direction. The support plate 22 is formed from a plate-like member that faces the width direction and whose longitudinal direction is the direction of travel. A pair of support plates 22 is provided on the left and right. The rear ends of the left and right support plates 22 are fixed to the front ends of the left and right side frames 13, respectively, with bolts or the like. The front ends of the support plates 22 support the support frame 21.

[0032] (Chemical liquid pressure delivery section) The liquid chemical pressure-feeding section 30 includes a pump support member 31 , a pump unit 32 , a motor 33 , tank support members 34 and 35 , a liquid chemical tank 36 , and a check indicator 37 .

[0033] The pump support member 31 is formed by bending a plate-like member so that it is roughly C-shaped when viewed from the front. The pump support member 31 is fixed to the right end of the support frame 21 with the open side of the roughly C-shape facing downward and its longitudinal direction aligned with the direction of travel.

[0034] The pump unit 32 is a unit formed by arranging two chemical liquid pumps 321 side by side. In this embodiment, the soil disinfection machine 1 is equipped with three pump units 32. The three pump units 32 are fixed to the upper surface of the pump support member 31 and are arranged side by side in the front-to-rear direction.

[0035] The motor 33 is a drive source for driving the pump units 32. The motor 33 is attached to the front end of the pump unit 32 that is located most forward. It is possible to drive all of the pump units 32 with one motor 33. The motor 33 can also be attached to the rear end of the pump unit 32 that is located most rearward.

[0036] A tank support member 34 is fixed to the left end of the support frame 21, and a tank support member 35 is fixed to the left end of the main frame 12. The tank support member 34 and the tank support member 35 hold a chemical tank 36. The chemical tank 36 stores a chemical liquid.

[0037] The chemical tank 36 and the chemical pump 321 of the pump unit 32 are connected by a chemical hose (not shown), and the chemical stored in the chemical tank 36 is pumped to the chemical injector 50 by the chemical pump 321.

[0038] The check meter 37 is an instrument for checking whether or not the chemical pump 321 is discharging the chemical, and is fixed to the support frame 21. The check meter 37 is located between the pump unit 32 on the support frame 21 and the support plate 22 in the width direction.

[0039] (medicinal solution injection section) The chemical solution injection unit 50 includes a claw frame 51, a movable frame 52, chemical solution injection claws 53, a claw mounting plate 54, and a chemical solution injection nozzle 55. The claw frame 51 is formed from a square pipe member and is arranged in such a position that the longitudinal direction is the width direction.

[0040] The movable frame 52 is fixed to the center in the width direction of the claw frame 51. The movable frame 52 is attached to the adjustment frame 16 of the connecting part 10 so as to be able to move up and down. Screw holes are formed in the movable frame 52 along the vertical direction, and screws formed at the lower end of the height adjustment lever 17 are threaded into the screw holes in the movable frame 52.

[0041] As a result, the claw frame 51 is supported by the connecting portion 10 so as to be vertically movable, and by rotating the height adjustment lever 17, the claw frame 51 can be moved in the vertical direction.

[0042] The chemical injection claws 53 are inserted into the field from the bottom side to inject chemical solution into the soil in the field. The chemical injection claws 53 are attached to the claw frame 51 via a claw attachment plate 54. The chemical injection claws 53 are supported by the connecting part 10 that constitutes the body of the soil disinfection machine 1 via the claw attachment plate 54, the claw frame 51, and the movable frame 52. The chemical injection claws 53 are configured so that their widthwise position can be adjusted when attached to the claw frame 51.

[0043] A chemical liquid injection nozzle 55 is fixed to the rear surface of chemical liquid injection claw 53. Chemical liquid injection nozzle 55 and chemical liquid pump 321 of pump unit 32 are connected by a chemical liquid hose (not shown), and the chemical liquid pressure-fed by pump unit 32 is discharged from the tip of chemical liquid injection nozzle 55. In other words, the chemical liquid stored in chemical liquid tank 36 is pressure-fed to chemical liquid injection nozzle 55 of chemical liquid injector 50 by chemical liquid pump 321 and discharged from the tip of chemical liquid injection nozzle 55.

[0044] The tip of the chemical injection nozzle 55b is located at the lower end of the chemical injection claw 53, and when the chemical injection nozzle 55b is inserted into the soil in the field, the chemical solution is injected into the soil by ejecting the chemical solution from the tip of the chemical injection nozzle 55b.

[0045] A plurality of chemical injection claws 53 are provided along the width direction. In this embodiment, six chemical injection claws 53 are arranged along the width direction. Chemical injection claws 53 are attached to claw frame 51 supported by movable frame 52, and the height position of chemical injection claws 53 can be adjusted to a desired position by rotating height adjustment lever 17. This makes it possible to adjust the injection depth of chemical solution into the soil in the field.

[0046] (Multi-task unit) The multi-working unit 60 comprises a work frame 61, a wheel frame 62, wheels 63, a groove making wheel 64, a film frame 65, a film stay 66, a multi-film 67, an extension frame 71, a pressure wheel support stay 72, a pressure wheel 73, a soil covering wheel support stay 74, and a soil covering wheel 75.

[0047] The work frame 61 extends in the front-to-rear direction, and the front end of the work frame 61 is supported by the main frame 12. A pair of work frames 61 is provided on the left and right, with the left work frame 61 supported by the left end of the main frame 12 and the right work frame 61 supported by the right end of the main frame 12. The work frames 61 are supported by the main frame 12 so that their left and right positions can be adjusted.

[0048] The wheel frame 62 extends downward from the front end of the working frame 61. The wheel frame 62 is supported on the working frame 61 so that its vertical position can be adjusted. The wheels 63 are rotatably supported on the lower end of the wheel frame 62.

[0049] The groove making wheel 64 is supported on the wheel frame 62 via a groove making frame 641. The groove making frame 641 extends forward from the lower end of the wheel frame 62, and the groove making wheel 64 is rotatably supported on the groove making frame 641. The groove making frame 641 is configured so that the attachment angle with respect to the wheel frame 62 can be changed.

[0050] The film frame 65 extends obliquely upward and rearward from the lower end of the wheel frame 62. The film stay 66 extends obliquely downward and rearward from the rear end of the film frame 65. The multi-film 67 is located behind the left and right wheels 63 and is supported by the rear ends of the left and right film stays 66 .

[0051] The extension frame 71 extends rearward from the rear end of the work frame 61. The pressure wheel support stay 72 extends vertically and is supported at the front of the extension frame 71. The pressure wheel 73 is rotatably supported at the lower end of the pressure wheel support stay 72. The soil cover wheel support stay 74 extends vertically and is supported at the rear end of the extension frame 71. The soil cover wheel 75 is rotatably supported at the lower end of the soil cover wheel support stay 74.

[0052] [Injecting chemicals into a field using a soil disinfectant] In the soil disinfection machine 1 configured in this manner, the chemical solution stored in the chemical solution tank 36 is pressure-fed by the chemical solution pump 321 to the chemical solution injection nozzle 55 fixed to the chemical solution injection claw 53. With the chemical solution injection claw 53 inserted into the soil in the field from the bottom end, the soil disinfection machine 1 can inject the chemical solution into the soil by discharging the chemical solution from the chemical solution injection nozzle 55 while moving along the direction of travel.

[0053] A mulch film 67 is stretched over the field into which the chemical solution has been injected. The left and right ends of the mulch film 67 stretched over the field are pressed by pressure wheels 73. Then, the film is covered with soil by a soil covering wheel 75. The left and right ends of the mulch film 67 are covered with soil.

[0054] By laying mulch film 67 over the field into which the chemical solution has been injected, it is possible to prevent the chemical solution injected into the field from evaporating, and it is possible to effectively sterilize and disinfect the soil in the field with the chemical solution.

[0055] [Chemical injection nail] 4 and 5, chemical solution injection claw 53 includes support portion 531 and claw portion 532. Support portion 531 is a portion attached to claw attachment plate 54 of chemical solution injection unit 50, and is formed of a long plate-like member extending in the vertical direction.

[0056] An attachment hole 531a is formed in the support portion 531, and the drug injection claw 53 can be attached to the claw attachment plate 54 by inserting a fastening member such as a bolt into the attachment hole 531a and fastening it to the claw attachment plate 54.

[0057] In the support portion 531, multiple mounting holes 531a are arranged in the vertical direction, and by changing the position of the mounting holes 531a into which the fastening members are inserted, it is possible to adjust the vertical position of the drug solution injection claw 53 when attaching it to the claw attachment plate 54.

[0058] The claw portion 532 is located below the support portion 531. The claw portion 532 is connected to the lower end of the support portion 531. The claw portion 532 has a blade surface 5321 that faces forward in the traveling direction and extends in the vertical direction, and a rear surface 5322 that faces backward in the traveling direction and extends in the vertical direction.

[0059] In the direction of travel, the upper end of the blade surface 5321 protrudes forward beyond the support portion 531, and the blade surface 5321 slopes backward from the upper end to the lower end. The blade surface 5321 is formed in an arc shape that convex forward in the direction of travel. In the direction of travel, the lower end of the blade surface 5321 is located rearward beyond the support portion 531.

[0060] The rear surface 5322 extends downward from the rear end of the support portion 531. The rear surface 5322 is inclined rearward from the upper end to the lower end. The rearward inclination angle of the rear surface 5322 is smaller than the rearward inclination angle of the blade surface 5321. The length in the front-to-rear direction between the blade surface 5321 and the rear surface 5322 at the upper end of the claw portion 532 is greater than the length of the support portion 531 in the front-to-rear direction.

[0061] In this way, the front-to-back length of the claw portion 532 is formed to be greater than the front-to-back length of the support portion 531, and the claw portion 532 has a shape in which, for example, the blade surface at the front end extends vertically downward from the lower end of the support portion 531 and then slopes backward, and the area viewed from the width direction is larger than when the claw portion 532 is formed so that the front-to-back length is the same size as the front-to-back length of the support portion 531.

[0062] The blade surface 5321 has a left inclined surface 5321a and a right inclined surface 5321b. The left inclined surface 5321a and the right inclined surface 5321b face in a direction inclined with respect to the front side in the direction of travel. Specifically, the left inclined surface 5321a inclines to the left as it moves from the front end to the rear, and the right inclined surface 5321b inclines to the right as it moves from the front end to the rear.

[0063] The front end of the left inclined surface 5321a and the front end of the right inclined surface 5321b are connected, and the blade surface 5321 is formed by the left inclined surface 5321a and the right inclined surface 5321b into a triangle whose apex is located at the front end.

[0064] In this way, in the chemical injection claw 53 provided in the soil disinfection machine 1, the upper end of the blade surface 5321 of the claw portion 532 protrudes forward beyond the support portion 531, and the blade surface 5321 is inclined backward from the upper end to the lower end.

[0065] This allows the blade surface 5321 to have a larger angle of inclination toward the rear relative to the vertical direction, so that even if there is residue that has not been sufficiently treated remaining in the soil of the field, the residue can be pushed downward into the soil, preventing the residue from getting caught on the chemical injection claw 53 and being dragged along.

[0066] Therefore, the effects of the chemical solution can be maintained without leaving grooves in the marks of the chemical solution injection claws 53. Also, the processing time can be reduced by preventing residue from getting caught in the chemical solution injection claws 53. Note that residue in the soil refers to stems, leaves, vines, roots, and other debris that remain after harvesting crops.

[0067] In particular, the front-to-rear length of the claw portion 532 is formed to be greater than the front-to-rear length of the support portion 531, so that residues in the soil are less likely to become entangled in the claw portion 532 compared to, for example, when the front-to-rear length of the claw portion 532 is formed to be the same length as the front-to-rear length of the support portion 531.

[0068] Furthermore, in the drug solution injection claw 53, the lower end of the blade surface 5321 is located further rearward in the direction of travel than the support portion 531, so that the angle of inclination of the blade surface 5321 toward the rear can be made larger, thereby effectively preventing residue from getting caught.

[0069] Furthermore, the cutting edge 5321 is formed in an arc shape that is convex toward the front in the direction of travel, making it easier to push residue into the soil and effectively preventing residue from getting caught.

[0070] In chemical solution injection claw 53 of the present embodiment, blade surface 5321 is formed in an arc shape that is convex toward the front in the direction of travel, but it is also possible to form blade surface 5321A of claw portion 532A in a shape that slopes linearly rearward from the top end to the bottom end, as in chemical solution injection claw 53A shown in Fig. 6. In this case, too, it is possible to prevent residual material from getting caught on chemical solution injection claw 53. [Explanation of symbols]

[0071] 1 Soil disinfection machine 10 Connection part 36 Chemical tank 53 Chemical injection nail 321 Chemical pump 531 Support part 532 Claw 5321 Blade surface 55 Chemical injection nozzle

Claims

1. A chemical injection claw attached to the body of the soil disinfection machine for injecting chemicals into the soil, a support portion supported by the airframe; a claw portion connected to the support portion and inserted into the soil; The claw portion has a blade surface that faces forward in the traveling direction of the machine body and extends in the up-down direction, an upper end of the blade surface protrudes forward beyond the support portion; The medical solution injection nail is characterized in that the cutting edge is inclined backward from the upper end to the lower end.

2. The chemical solution injection claw according to claim 1 , wherein a lower end of the cutting edge is located rearward of the support portion in the traveling direction of the machine body.

3. The chemical solution injection claw according to claim 1 , wherein the cutting edge is formed in an arc shape that is convex toward the front side in the traveling direction of the machine body.

4. The drug solution injection nail according to any one of claims 1 to 3; a machine body supporting the chemical solution injection claw; a chemical tank for storing a chemical; a chemical injection nozzle fixed to the chemical injection claw and configured to inject chemical solution into the soil; a chemical pump that pressure-feeds the chemical stored in the chemical tank to the chemical injection nozzle; A soil disinfection machine equipped with:

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