JP3875424B2 - Adjustment mechanism of fertilizer application nozzle in paddy field machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a fertilizer application device installed in a paddy field work machine, and more particularly to an adjustment mechanism of a fertilizer nozzle of the fertilizer application device.
[0002]
[Prior art]
The paddy field machine is often provided with a fertilizer applying fertilizer at the same time as planting. The fertilizer application apparatus has a fertilizer nozzle that injects fertilizer supplied from a fertilizer tank into the soil, and the fertilizer nozzle is preferably adjustable in depth and load. Conventionally, for example, as shown in FIG. Further, the depth adjustment is performed with the bolt a and the load adjustment is performed with the bolt b.
[0003]
However, in this case, since the depth fine adjustment mechanism and the load adjustment mechanism are provided separately, a corresponding space is taken up, the number of parts is increased, and the configuration is complicated. Further, the adjustment mechanism as shown in FIG. 9 is on the front side of the float, and when adjusting the depth or adjusting the load, it is necessary to perform it in an unreasonable posture.
[0004]
[Problems to be solved by the invention]
The present invention has been made in view of the prior art, and an object of the present invention is to provide a fertilization nozzle adjusting mechanism that has a simple configuration and is space-saving and easy to operate.
[0005]
[Means for Solving the Problems]
In order to achieve such a problem, the present invention adopts the technical means that one end of the rod is connected to a fertilizer nozzle, and the rod can be inserted into and fixed to a fixing member disposed at a predetermined site. A load adjusting member is provided on the rod so as to be movable and fixed in the length direction; a spring is provided between the fixing member and the load adjusting member; The fertilizer nozzle depth is finely adjusted by changing the length, and the load adjustment is performed by changing the spring force of the spring by advancing and retreating the load adjusting member.
[0006]
The attachment site | part of the fertilization nozzle is not limited, The thing supported by the planting apparatus side or the thing supported by the float may be sufficient. The point is that one end of the rod is operably linked to the fertilizer nozzle, and the rod can be finely adjusted by moving the rod back and forth. The fixing member is, for example, a fixing pin that is fixed to a predetermined portion and has a rod insertion hole, and the depth of the nozzle can be adjusted by changing the fixing position of the fixing member. The load adjusting member is preferably a nut, and the spring force can be finely adjusted by moving the nut back and forth. Preferably, the rod is provided with a nut on the opposite side of the spring across the fixing member, and the position of the rod can be fixed to the fixing member by the nut.
[0007]
Preferably, the rod extends in the front-rear direction of the machine body, and is linked to the fertilizer nozzle via the front end side, and is configured to finely adjust the depth of the fertilizer nozzle and adjust the load from the rear side. Yes.
[0008]
Preferably, the float that slides on the rice field and the fertilizer nozzle are connected by a linkage plate to link the vertical movement of the float and the vertical movement of the fertilizer nozzle, and the linkage plate has a plurality of set holes. The depth of the fertilizer application nozzle is adjusted by selecting a predetermined set hole and locking the fixing member.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an overall side view of a 6-row riding rice transplanter, and FIG. 2 is an enlarged side view of the rear of the riding rice transplanter. A planting work machine 2 is connected to the rear part of the traveling machine body 1 as a working machine. Yes. The traveling machine body 1 includes a machine body frame 5 having a front wheel 3 and a rear wheel 4, an engine 6 mounted on the front part of the machine body frame 5, a driving operation unit 7 and a driver seat 8 disposed on the rear side thereof. Yes. The planting work machine 2 is connected to the rear part of the machine body through a link mechanism 9 so as to be movable up and down, and a T-type main float 10 and a side float 11 are provided on the lower side of the planting work machine 2.
[0010]
The body frame 5 is provided with a side fertilizer tank 12 and a deep layer fertilizer tank 13, which are connected to a side strip (shallow layer) fertilization nozzle 14 and a deep layer fertilization nozzle 15 of a fertilizer, respectively, via pipes. Has been. In FIG. 4, reference numeral 16 denotes a joint portion provided on the base end side of the fertilizing nozzles 14 and 15, and a fertilizer is supplied to the fertilizing nozzles 14 and 15 by connecting a pipe (not shown) to the joint portion 16. ing. A pump is interposed in the pipe, and the pump is driven by a transmission to inject paste-like fertilizer into the soil from the fertilizer nozzles 14, 15. The configuration is known.
[0011]
3 is a side view of the center float 10, and FIG. 4 is a plan view of the center float 10. The center float 10 has a T-shape in plan view, and is positioned at a lower part of the planting device 2 so as to support the front and rear. It is mounted so as to be movable up and down through the section. The side strip fertilizer nozzle 14 extends rearward from the rear end of the leveling portion 10 a (T-shaped head) of the center float 10, and the deep layer fertilizer nozzle 15 is laterally fertilized at the center in the width direction of the float 10. It extends backward so as to be parallel to the nozzle 14.
[0012]
A planter case 19 is provided on the planting part frame 17 extending in the width direction of the center float 10 so as to extend rearward through a bracket 18, and the planter case 19 includes a front wall 20a and side walls 20b. A plate-shaped mounting seat 20 having a L shape in plan view is mounted, and the pivot shaft 21 of the deep fertilizer application nozzle 15 is mounted on the mounting seat 20. The side strip fertilizer nozzle 14 is attached to a shaft portion 22 that is located slightly rearward from the middle part of the float in the front-rear direction and extends in the width direction, and moves up and down as the float 10 moves up and down. It is supposed to be.
[0013]
The depth fine adjustment mechanism and the load adjustment mechanism of the deep layer fertilization nozzle 15 will be described. The adjustment mechanism includes a rod 23 linked to the fertilizer nozzle 15 via one end side, a fixing pin 24 through which the rod 23 is movably inserted, a first nut 25 provided on the other end side of the rod 23, A spring 26 positioned between the fixing pin 24 and the first nut 25 and mounted on the rod 23, and a second nut 27 provided on the rod 23, positioned on the opposite side of the spring 26 across the fixing pin 24. . On the peripheral surface of the rod 23, a female screw (not shown) is engraved at a portion where the first nut 25 and the second nut 27 advance and retreat.
[0014]
The fixing pin 24 is disposed at an intermediate portion of the rod 23 so as to be orthogonal to the length direction of the rod 23, and one end side thereof is a depth switching plate 28 described later (in the embodiment, the movement of the float is linked to the fertilizer nozzle). The movement is regulated by detachably fixing to a predetermined portion provided in the plate).
[0015]
A ball joint 29 is provided on one end side of the rod 23, and one end side of the rod 23 is connected via a ball joint 29 to a plate-like link 30 connected to the rotation support shaft 21 of the nozzle. The connection between the rod 23 and the fertilizer nozzle 15 will be described with reference to FIGS. 3 to 5 and FIG. The base end of the fertilizer nozzle 15 is fixed to a rotary spindle 21 that extends perpendicular to the length direction of the fertilizer nozzle 15, and the fertilizer nozzle 15 and the rotary spindle 21 rotate together. The plate-like link 30 is externally fitted to the rotating support shaft 21 via a ring-shaped portion on the base end side, and is connected to the rotating support shaft 21 via a spring pin 31. The plate-like link 30 also rotates with the rotation.
[0016]
By moving the second nut 27 back and forth on the rod 23, the distance from the ball joint 29 (one end side of the rod 23) to the fixing pin 24 is changed, whereby the plate-like link 30 is rotated, and the nozzle The depth of the fertilizer nozzle 15 is adjusted by rotating the rotation support shaft 21.
[0017]
Moreover, the fixed pin 24 and the rotation spindle 21 are connected by a long connecting member. The connecting member includes a plate-like spring plate 32a and a plate-like piece 32b having a letter-like shape when viewed from the side. The outer end is freely fitted, and the distal end side is fixed to the proximal end side of the spring plate 32a. A locking hole is formed on the distal end side of the spring plate 32 a and is connected to the fixing pin 24 by receiving the end of the fixing pin 24.
[0018]
If a load is applied to the tip of the fertilizer nozzle 15 during fertilization work (when riding on a stone or the like in the field), the fertilizer nozzle 15 rotates upward about the pivot shaft 21 and escapes. At this time, the plate-like link piece 30 rotates, the rod 23 is pulled via the ball joint 29, and the compression spring 26 generates a reaction force between the fixing pin 24 and the nut 25. On the other hand, the fixed pin 24 is connected to the rotation support shaft 21 by a connecting member that is rotatably connected to the rotation support shaft 21, so that it is not affected by the rotation of the rotation support shaft 21. The spring 26 is set to a predetermined length by the first nut 25 and the load of the spring 26 is adjusted to adjust the load of the nozzle escape.
[0019]
The rod 23 constituting the adjustment mechanism extends in the front-rear direction of the airframe, and the nuts 25 and 27 for adjusting the depth and the load are both provided on the rear side of the rod 23. It can be carried out. Further, since the nuts 25 and 27 are adjusted by screwing and unscrewing on the rod 23, fine adjustment is possible.
[0020]
Next, a nozzle depth adjusting mechanism by changing the fixing position of the fixing pin 24 will be described. The depth switching plate 28 is provided with a plurality of set holes 33 for depth switching, and a fixing pin 24 through which the rod 23 is inserted and supported is connected via a spring plate 32 a provided on the other end side of the fixing pin 24. The nozzle depth is adjusted by selecting the desired set hole 33 and detachably mounting it. A fixed pin 24 is connected to the tip of the spring plate 32a so as to be orthogonal to the plate surface portion, and the end of the fixed pin 24 is bent by bending the spring plate 32a away from the plate 28 via the base end side. And the locking set hole 33 formed in the depth switching plate 28 can be detached. Since the base end side of the spring plate 32a is fixed to a plate-like piece 32b that is rotatably connected to the rotation support shaft 21, the fixing pin 24 is centered on the rotation support shaft 21 when the depth is switched. Can rotate in the vertical direction. In this way, the fixing pin 24 moves up and down around the rotation support shaft 21 and is locked to the plate 28 by the spring plate 32a, so that the attaching and detaching work of the fixing pin 24 can be performed satisfactorily. However, the pivot point of the connecting member that pivots the fixing pin 24 is not limited to the pivot shaft 21.
[0021]
In the embodiment, the depth switching plate 28 is provided with three set holes 33 obliquely in the vertical direction, and three-stage switching adjustment is possible except for the storage posture. The depth switching plate 28 is wide in the vertical direction, and a plurality of set holes 33 are provided in the vertical direction for switching the depth to adjust the depth. Therefore, the adjustment range of the depth switching can be increased, and the depth switching is performed. The plate 28 has sufficient strength and can save space.
[0022]
The adjustment mechanism of the fertilization nozzle 15 on the side float 11 side is the same as the adjustment mechanism of the fertilization nozzle 15 on the center float 10 side, and the description thereof is omitted. In FIG. 5, the same members are denoted by the same reference numerals.
[0023]
Next, the structure which connects the up-and-down movement of the floats 10 and 11 to the nozzle 15 supported by the body side is demonstrated. This is to keep the depth of the nozzle 15 relative to the float constant by connecting the floats 10 and 11 and the fertilizer nozzle 15. The fulcrum on the rear side of the floats 10 and 11 is connected to the planting depth adjustment lever 35 via the link piece 34, and the floats 10 and 11 move up and down by the operation of the planting depth adjustment lever 35. Here, the depth switching plate 28 has a function of a cooperation plate that interlocks the vertical movements of the floats 10 and 11 and the vertical movement of the fertilizer nozzle 15.
[0024]
The connecting plate 28 is a plate material extending in the longitudinal direction of the machine body, has a narrow width on the front side, and is rotatably mounted on the rotation support shaft 21 with the front side as a base end. The rear side from the central portion of the connecting plate 28 is a wide portion, and two connecting holes 36 are arranged in parallel at the rear end with a predetermined interval in the vertical direction. The connecting hole 36 is a long hole extending in the up-down direction slightly inclined rearward.
[0025]
On the upper surfaces of the floats 10 and 11, a mounting plate member 37 having an L shape in a side view is provided oppositely from a horizontal portion 37 a and a rising portion 37 b, and support shafts 38 a and 38 b are provided between the rising portions 37 b of the mounting plate member 37. The support shafts 38 a and 38 b are inserted through the connecting holes 36 with a predetermined interval in the vertical direction. The lower support shaft 38b forms a pivot point of the floats 10 and 11, and one end side of the link piece 34 is connected to the lower support shaft 38b. The attachment plate member 37 constitutes a part of a link mechanism for the float vertical adjustment, and another link piece (not shown) is connected to the upper support shaft 38a.
[0026]
The movement of linking the vertical movements of the floats 10 and 11 and the vertical movement of the fertilizer nozzle 15 will be described by taking as an example a change from the solid line position shown in FIG. 7 to the two-dot chain line position. When the planting depth lever 35 is rotated rearward, the link piece 34 is rotated downward, and the attachment member 37 and the floats 10 and 11 are moved downward via the support shaft 38b. As the mounting member 37 moves downward, the support shafts 38a and 38b also move downward. At this time, the support shafts 38a and 38b move downward along the long hole-like connecting holes 36 (380a). 380b), the connecting plate 28 is forcibly rotated downward. As the connecting plate 28 is rotated downward, the rod 23 connected to the connecting plate via the fixing pin 24 moves downward, and the fertilizer nozzle 15 is moved forward (150) via the plate-shaped link piece 30. ). In this way, the tip of the fertilizer application nozzle 15 moves by a depth that approximates the amount of displacement of the planting depth.
[0027]
【The invention's effect】
According to the first aspect, the depth of the fertilizer nozzle and the load adjustment of the nozzle escape can be adjusted by a series of operations on one rod, and the configuration is simplified and the space is saved. Is planned. Since adjustment is performed using a rod having a predetermined length, a wide adjustment range can be ensured in spite of space saving. According to the second aspect of the present invention, since the fertilization nozzle can be adjusted at the rod portion extending rearward of the machine body, the work can be easily performed with an easy posture as compared with the conventional case. According to the third aspect of the present invention, since the depth of the fertilizer application nozzle is adjusted using a linkage plate that coordinates the vertical movement of the float and the vertical movement of the fertilizer nozzle, space saving can be achieved.
[Brief description of the drawings]
FIG. 1 is an overall side view of a paddy field working machine.
FIG. 2 is a rear side view of a paddy field working machine.
FIG. 3 is a side view of the center float.
FIG. 4 is a plan view of a center float.
FIG. 5 is a side view of a side float.
FIG. 6A is a schematic view of a fertilization nozzle adjusting mechanism.
(B) is a figure which shows the rod in Fig.6 (a).
FIG. 7 is a diagram showing the linkage between the float and the fertilizer application nozzle.
FIG. 8 is a schematic perspective view showing a connecting portion between a nozzle adjusting mechanism and a fertilization nozzle.
FIG. 9 is a diagram showing a conventional fertilization nozzle adjusting mechanism.
[Explanation of symbols]
15 Deep layer fertilizer nozzle 23 Rod 24 Fixing pin 25 First nut 26 Spring 27 Second nut

Claims (3)

One end of the rod is connected to a fertilizer nozzle, and the rod can be inserted into and fixed to a fixing member disposed at a predetermined position. A load adjusting member moves and is fixed to the rod in the length direction. A spring is provided between the fixing member and the load adjustment member, and the fertilization nozzle depth is finely adjusted by changing the length from the fixing member to one end of the rod. An adjustment mechanism for a fertilizer nozzle in a paddy field machine, wherein load adjustment is performed by changing a spring force of the spring by advancing and retreating a load adjusting member. The rod extends in the front-rear direction of the machine body, and is linked to a fertilizer nozzle through a front end side, and fine adjustment and load adjustment of the fertilizer nozzle are performed from the rear side. The adjustment mechanism of the fertilizer nozzle in the paddy field machine described in 1. By connecting the float sliding on the surface of the field and the fertilization nozzle with a linkage plate, the vertical movement of the float and the vertical movement of the fertilization nozzle are linked, and a plurality of set holes are arranged in the linkage plate, The fertilizer application nozzle in a paddy field machine according to any one of claims 1 and 2, wherein a depth of the fertilizer application nozzle is adjusted by selecting a predetermined set hole and locking the fixing member. Adjustment mechanism.

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