JPH1132534A - Supporting structure of transmission case in fertilizing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a supporting structure for a transmission case in a fertilizing machine capable of adjusting the penetration depth of each of manuring nozzles into the deep layer part of a field simply in a wide range, by constituting a transmission case itself integrally equipped with the manuring nozzles so that the lifting and lowering of the case can be controlled. SOLUTION: A transmission case 12 supporting manuring nozzles 11 lifting and lowering in different phase difference on shafts at the right and left sides is vertically movably held through a lifting and lowering mechanism 13 installed at the rear side of the ease. The front part of the transmission case 12 is supported through link arms 22 and 23 laid between an input shaft 18 at the side of the transmission case 12 and a driving shaft 15 for transmitting a driving force to the input shaft. The rear face side of the transmission case 12 is screwed to a screw shaft 36 rotatably stood on a machine body frame 3 to give a lifting and lowering mechanism 13 for lifting and lowering the transmission case 12 by the normal and reversed rotation operation of the screw shaft 36.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a fertilizer that injects fluid fertilizer into a deep part of a field at predetermined intervals,
In particular, the present invention relates to a structure for supporting a transmission case in a fertilizer applicator in which a transmission case itself integrally provided with a fertilization nozzle is configured to be able to move up and down so that the depth of entry of the fertilization nozzle into a deep field can be easily and widely adjusted. It is.

[0002]

2. Description of the Related Art Conventionally, a vehicle is provided on each of the left and right sides of an airframe.
A fertilizer that injects fluid fertilizer into a field by a fertilizer nozzle that is driven up and down in different phases is known, and as its configuration, an engine, fertilizer tank, etc. are mounted on the front part of an airframe with left and right wheels A transmission case equipped with fertilizing nozzles that move up and down with different phase differences at both ends of the output shaft protruding to the left and right sides of the aircraft on the fuselage frame configured with a handle at the rear By driving the aircraft while alternately driving the fertilizer nozzle up and down by the driving force supplied to the case,
The liquid fertilizer is intermittently injected into the soil of the field from the tip of the fertilizing nozzle that descends and enters the deep part of the field.

When the fertilizer application is performed using the above fertilizer, it is necessary to adjust the depth of entry of the fertilizer nozzle into the field according to the condition of the field and the type of the crop to be grown. Conventionally, the height of the fuselage frame relative to the field scene is relatively changed by vertically adjusting the fixed position of the tail wheel provided at the rear of the fuselage frame together with the left and right wheels, and the installation height of the transmission case accompanying this is adjusted. The approach depth of the fertilizer nozzle is adjusted by changing the height.

However, in the position adjustment of the fertilizer nozzle by the tail wheel as described above, the running posture of the body changes every time the adjustment is performed, and the center of gravity of the entire body shifts, and the handle of the steering wheel changes with the vehicle height. Since the height position also changes up and down, it is not possible to stably maintain the working posture of the aircraft, and when changing the fixed position of the tail wheel, move the heavy aircraft frame relatively up and down. This imposes a heavy burden on the operator, and furthermore, there is a limit to the range in which the fixed position of the tail wheel can be changed up and down. Was to do.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to solve the conventional problems in view of the above-mentioned situation, and has as its object the object of the present invention is to provide a running posture and a working posture of an airframe. Without changing the depth of penetration of the fertilizer nozzle into the deep field of the field, the condition of the field, it can be adjusted with a wide range of adjustment depending on the type of crop to be grown, and the transmission case that moves up and down, An object of the present invention is to provide a support structure of a transmission case in a fertilizer applicator that can be supported with a simple configuration that directly uses a drive shaft that supplies a drive force thereto.

[0006]

Means for Solving the Problems In order to solve the problem, a first technical means adopted by the present invention is a power transmission case which is provided on a body frame and which can be moved up and down. At both ends, fertilizing nozzles that move up and down with different phase differences are respectively supported, and linked to the entry operation of the fertilizing nozzle into the deep part of the field as the aircraft travels, the liquid fertilizer is ejected from the tip of the nozzle. A drive shaft for transmitting a driving force to the transmission case is provided in parallel with the input shaft protruding in the left-right direction from a front portion in the transmission case, and a belt clutch mechanism is provided between both shafts. The shaft ends of the drive shaft and the shaft ends of the input shafts corresponding to the drive shafts are connected by link arms, respectively, via a lifting mechanism provided on the rear side of the transmission case. The ke that moves up and down The front portion of the transmission shaft is supported by the drive shaft, and as a second technical means, the lifting mechanism is provided on a screw shaft rotatably mounted on the body frame by a screw shaft of the transmission case. The rear surface side is screwed, and the transmission case is moved up and down by forward and reverse rotation operations of the screw shaft.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be described in detail with reference to an embodiment shown in the drawings. In the figure, reference numeral 1 denotes a fertilizer applicator. The fertilizer applicator 1 has an engine 4 mounted on a front part of a body frame 3 supporting left and right wheels 2 and 2, and the front and right and left sides of the body frame 3 are located above the body. A frame pipe-shaped safety frame 5 is fixed along the side surface, and a fuel tank 6 and a fertilizer tank 7 are mounted and fixed on the upper part thereof. A handle 9 extends rearward via a mounting bracket 10 on the body frame 3 which is supported and is located above the tail wheel 8.

At the intermediate position between the rear end of the safety frame 5 and the mounting bracket 10, a transmission case 12 in which fertilizing nozzles 11, which are driven up and down with different phase differences, are integrally supported on the left and right side surfaces in the machine body traveling direction. The fertilizer applicator 1 is disposed on the body frame 3 via an elevating mechanism 13 to be described later so as to be movable up and down. 1
By making 1, 11 alternately enter the deep field,
The fertilizer applicator 1 is configured to inject fluid fertilizer into the soil from the tips of the nozzles 11 and 11.

The transmission case 12 is a transmission case 1 for transmitting the driving force from the engine 4 to the wheels 2, 2.
4 is connected to the drive shaft 15 via a belt clutch mechanism 16 so that the switching lever 1
The belt clutch mechanism 16 is intermittently operated by the operation 7 to turn on / off the lifting drive and the fertilization operation of the fertilizing nozzles 11 during running.

That is, the drive shaft 15 housed in the transmission case 14 is disposed in parallel with the input shaft 18 projecting from the front in the transmission case 12 in the left-right direction. Between the driving pulley 16a and the driven pulley 16b which are supported at the respective shaft ends of the transmission belt 1
9, and a switching arm 20 having a roller 20 a pivotally supported at the rotation end facing the intermediate region of the winding of the transmission belt 19, and the other end of an operation wire 21 having one end connected to the switching arm 20. Is connected to the switching lever 17, and the switching arm 20 which swings up and down by the pulling operation causes the roller 20a to press the transmission belt 19 to put the transmission belt 19 in a tensioned state, and the roller 20a to A belt clutch mechanism 16 is configured to switch between a clutch OFF position that is separated from the position 19 and makes the state relaxed. Further, link arms 22 and 23 corresponding to the respective shaft ends are connected between both shaft ends of the drive shaft 15 on the transmission case 14 side and both shaft ends of the input shaft 18 on the transmission case 12 side. A link arm 22, together with an elevating mechanism 13 disposed on the rear side of the transmission case 12,
The front part of the transmission case 12 is supported on the drive shaft 15 via the drive shaft 15 so as to be able to move up and down.

The input shaft 18 of the transmission case 12 is shown in FIG.
As shown in FIG. 3, the sprocket 18 is
a, 24a and a transmission chain 25, a driving force is transmitted, and a crankshaft 27 is interlocked to both ends of the output shaft 24 via a universal joint 26. Further, a support rod 28 is attached to the tip of the crankshaft 27. A crank arm 29 pivotally supporting the upper end of the support rod 28 is connected to the lowermost position shown in the right half of FIG. The left and right fertilizing nozzles 11 and 11 supported via 30 are vertically driven with a phase difference of 180 degrees from each other.

An elevating rod 30 for supporting the fertilizing nozzle 11
Are the guide grooves 3 of the guide plate 31 supported on the crankshaft 27.
1a, and the up-and-down posture of the fertilizing nozzle 11 linked to the rotation operation of the crank arm 29 is configured to have a change trajectory as shown in FIG. Reference numeral 32 denotes a rotatable and retractable guide rod connected between the left and right sides of the transmission case 12 and the back surface of each of the guide plates 31, 31. Reference numeral 32a denotes a connection between the transmission case 12 and the lifting rod 30. And a fertilizing nozzle 11 that rises and lowers while extending in the lateral direction of the body along the rotation trajectory of the crank arm 29 and supported by a guide rod 32 via guide plates 31 and 31. And the lowered fertilizing nozzles 11 and 11
It is provided for the purpose of quickly shifting to the ascending posture with the rotation of the crank arm 29 by the urging forces a and 32a.

Further, on the left and right outer sides of the transmission case 12,
The fluid fertilizer supplied from the fertilizer tank 7 through the input hose 7a is supplied to each fertilizer nozzle 1 through the output hose 7b.
Plunger pumps 33, 33 are provided to feed the pistons 1, 1 and 11, and the base ends of the rod arms 34, 34 for pressing a piston (not shown) in the plunger pump 33 are connected to the output shaft 24 in the transmission case 12. Intermittent cams 34a, 34a
The rod arms 34, 34 are pivoted up and down in connection with the rotation drive of the output shaft 24, and the injection of the fluid fertilizer from the plunger pumps 33, 33 is performed by the fertilizing nozzles 11, 11. The operation is performed intermittently in synchronization with the lowering operation. 34b, 34b are rod arms 34, 34
And a cam shaft for supporting the intermittent cams 34a, 34a.

On the other hand, a screw shaft 36 is provided upright on the body frame 3 on the mounting bracket 10 located at the rear of the transmission case 12, and rotation of an adjusting lever 36a provided at the upper end thereof is performed. In addition to rotating the screw shaft 36, the brackets 12a, 12a integrally provided on the rear surface of the transmission case 12 are screwed into the screw shaft 36, and the forward and reverse rotation operation of the screw shaft 36 via the adjustment lever 36a, An elevating mechanism 13 that raises and lowers the transmission case 12 while supporting the front portion of the transmission case 12 on the drive shaft 15 of the transmission case 14 via link arms 22 and 23 is configured.

Since the present invention is configured as described above,
When the fertilizer applicator 1 performs the fertilization work in the field, the belt case mechanism 16 is switched to the ON state via the switching lever 17 in the running state of the machine body, and the transmission case 14
Is transmitted to the transmission case 12 via the drive shaft 15, the belt clutch mechanism 16 and the input shaft 18, and at the same time, the left and right fertilization nozzles 11 provided at both ends of the output shaft 24 of the transmission case 12. , 11 are driven up and down with a phase difference of 180 degrees, and when the fertilizer application nozzle 11 that has descended and entered the deep part of the field reaches the lowest position, the liquid fertilizer is ejected from its tip. And the fertilizing nozzle 1
The injection operation of the liquid fertilizer according to 1 and 11 is performed intermittently and alternately in connection with the running of the machine.

In the fertilizing operation using the fertilizer applicator 1, when the depth of entry of the fertilizing nozzles 11, 11 into the field is adjusted according to the condition of the field and the type of crop to be grown,
If the adjustment lever 36a is rotated forward and reverse, the transmission case 12
Is driven up and down along a screw shaft 36 while its front portion is supported by the drive shaft 15 of the transmission case 14 via link arms 22 and 23, and is transmitted to that position when the forward / reverse rotation of the adjustment lever 36a is stopped. The case 12 is fixed.
Therefore, the fertilizing nozzles 11 provided integrally with the transmission case 12 also move up and down, and the fertilizing nozzle 1
The adjustment of the entry depth of the transmission cases 1 and 11 can be easily performed by changing the vertical position of the transmission case 12.

When adjusting the depth of entry of the fertilizing nozzles 11 into the field as described above, the wheels 2, 2 and the tail wheel 8 that support the body frame 3 are maintained at the current state, and Since there is no change in the posture and the height of the handle 9 gripped by the operator does not change, every time an adjustment operation is performed, as in the conventional case, the depth of entry of the fertilizing nozzles 11 and 11 by the tail wheel 8 is adjusted. Unnecessary changes in the body posture and the working posture are not forced to be performed, and the fertilizing work can always be performed in the optimum posture.

[0018]

In summary, according to the present invention, a fertilizing nozzle which rises and lowers with a different phase difference is supported at both ends of an output shaft projecting from the left and right sides of the body traveling in a vertically movable transmission case provided on the body frame. A fertilizer applicator configured to inject fluid fertilizer from the tip of the fertilizer nozzle in association with the operation of the fertilizer nozzle entering the deeper part of the field as the aircraft travels, and to transmit a driving force to the transmission case. Drive shaft
An input shaft protruding in the left-right direction from the front portion of the transmission case is provided in parallel with and separated from the input shaft, and a belt clutch mechanism is interposed between the two shafts so as to be able to contact and separate therefrom, and each shaft end of the drive shaft that is separated from each other. The corresponding shaft ends of the input shafts are connected by link arms, and the front part of the case, which moves up and down via a lifting mechanism provided on the rear side of the transmission case, is supported by the drive shaft. The elevating mechanism is configured to screw a rear surface side of the transmission case on a screw shaft rotatably provided on the body frame, and to raise and lower the transmission case by forward and reverse rotation operations of the screw shaft. Thus, the depth of entry of the fertilizer nozzle into the deep field can be adjusted with a wide range of adjustment depending on the condition of the field and the type of crop to be grown without changing the running attitude and the working attitude of the aircraft. ,
The fertilizer application can always be performed in a stable working posture, and the front part of the transmission case that moves up and down is supported using the drive shaft that supplies the driving force to it, so a complicated support structure is required. In addition, there is a useful novel effect that the structure of the lifting mechanism can be made compact by effectively using the limited installation space on the body frame.

[Brief description of the drawings]

FIG. 1 is an overall side view of a fertilizer applicator.

FIG. 2 is a partially omitted overall plan view showing a configuration of a body frame.

FIG. 3 is a sectional view of a main part showing a drive configuration of a fertilizing nozzle.

FIG. 4 is a horizontal sectional view of a main part showing a transmission configuration between a drive shaft of a transmission case and an input shaft of a transmission case.

FIG. 5 is a partially omitted overall side view showing a transmission configuration from a drive shaft of a transmission case to a transmission case.

FIGS. 6 (a) to 6 (d) are operation explanatory diagrams sequentially showing a lifting drive state of a fertilizing nozzle.

[Explanation of symbols]

 Reference Signs List 1 fertilizer applicator 3 body frame 11 fertilizer application nozzle 12 transmission case 15 drive shaft 16 belt clutch mechanism 18 input shaft 22 link arm 23 elevating mechanism 24 output shaft 36 screw shaft

Claims (2)

[Claims] 1. An output shaft protruding from the left and right sides of a body traveling of a vertically movable transmission case provided on a body frame,
A fertilizer applicator configured to pivotally support fertilizer nozzles that move up and down with different phase differences, and to inject a fluid fertilizer from the tip of the nozzle in connection with the operation of the fertilizer nozzle entering the deep part of the field as the aircraft travels. A drive shaft for transmitting a driving force to the transmission case is provided in parallel with the input shaft protruding in the left-right direction from a front portion in the transmission case, and a belt clutch mechanism is moved between the two shafts. While freely interposed, each shaft end of the drive shaft that is separated and the corresponding shaft end of the input shaft are respectively connected by link arms, and are moved up and down via an elevating mechanism provided on the rear side of the transmission case. A support structure for a transmission case in a fertilizer applicator, wherein a front portion of the case is supported by the drive shaft. 2. The lifting mechanism according to claim 1, wherein a rear surface of the transmission case is screwed on a screw shaft rotatably provided on the body frame, and the transmission case is moved up and down by rotating the screw shaft forward and reverse. The support structure of the transmission case in the fertilizer applicator according to claim 1, wherein