JP2579220Y2 - Fertilizer distribution device in topdressing equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fertilizer distribution device in a topdressing device used for cultivation of, for example, asparagus.

[0002]

2. Description of the Related Art Conventionally, perennial rhizome crops such as asparagus have their roots at a depth of 10 to 30 cm below the surface layer. is there. For this reason, it is known as a device for injecting liquid fertilizer into a field by moving a plurality of nozzles up and down as the vehicle advances to a mobile agricultural machine such as a tractor. In the above device, a tank for paste fertilizer for supplying paste fertilizer to the nozzle is attached to the tractor, from the tank in front of the vehicle body to the nozzle of the rear fertilizer, via the pump provided on the work machine side We were supplying paste fertilizer.

[0003]

In the conventional fertilizer feeding apparatus, however, a large number of spear-shaped nozzles are mounted on a working machine frame so as to be vertically movable in a horizontal direction, and a crank arm for operating them is provided. And the transmission chain are also attached, so that many fertilizer pipes (hoses) from the pump to the nozzle are complicatedly entangled, complicating the piping work, and easily causing interference with the above-mentioned working parts. There were problems such as difficulty in performing internal maintenance work.

[0004]

The apparatus according to the present invention for solving the above-mentioned problems comprises a plurality of fertilizer pumps 49 for a plurality of nozzles 30 and a pump 3 for connecting the pumps 49 to the nozzles 3.
A joint having a joint for connecting the fertilizer circuit interposed between the pumps and connecting the joint and an out port of each pump 49 to a single import.
And a distribution joint 67 for connecting an out port to each nozzle 30 separately. A single port is used for the out port of the collective joint 66 and the import of the distribution joint 67, and a single port is provided between both ports. It is characterized by being connected by piping. A second feature is that, in the above-described apparatus, an intermittent valve 13 for intermittently supplying fertilizer is interposed in each connection pipe of the distribution joint 67 and the nozzle 30, and the intermittent valves 13 are arranged in a plurality of stages. The valve units 13a and 13b are mounted at approximately the center of the fertilizer working machine frame.
0 is distributed on the working machine frame to the left and right, and the piping is characterized.

[0005]

[Function] Liquid fertilizer or paste fertilizer is pumped by each pump 49.
Collected and sent to the collective joint 66 via each separate pipe, sent from the collective joint 66 to the distribution joint 67 in a single circuit, and from the distribution joint 67, the pipes corresponding to the number of the nozzles 30 and intermittent Fertilizer is separately supplied through the valve 13. Since the intermittent valve 13 is configured as a multi-stage valve unit 13a, 13b and is provided substantially at the center on the left and right on the working machine frame, the piping from the intermittent valve 13 to each nozzle 30 is equally distributed from the center of the frame to the left and right Distribution pipes can be arranged smoothly and neatly, and there is no interference between the pipes and other parts.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment according to the present invention will be described below with reference to the drawings. The fertilizer application machine 2 is attached to the rear of the tractor 1 by a three-point link 15 including a top link 15a and two lower links 15b so as to be able to move up and down. The working machine 2 has a substantially box-shaped outer shape, and a rear portion thereof is connected to the crank operating portion 20 and the crank operating portion 20 to be driven vertically to discharge fertilizer into the ground. A nozzle 30 is provided.

The structure of the working machine 2 will be further described with reference to FIGS. 1 to 5. A rectangular front frame 16 is provided at the front of the working machine frame. A frame-shaped tank support 18 is integrally fixed, and lower link frames 17 extend vertically from the left and right sides of the tank support 18 downward. 15b are connected. The rear end of the top link 15a is connected to the lower center of the tank support 18.

On the back side of the front frame 16, four nozzle frames 19 each having a U-shape in side view are projected so as to be arranged in the left-right direction, and the nozzle frame 19 has an upper portion forming an upper side of the U-shape. A frame 19a, a lower frame 19b also forming a lower side, and a vertical crank frame 19c at a rear end are provided with a crank operating portion 20 via a shaft 22 at the upper and lower ends of each crank frame 19c. As shown in FIGS. 1 and 2,
The crank operating portions 20 are arranged at two locations between two nozzle frames 19, 19 arranged at the left and right ends, two each for each, a total of four locations. A grounding wheel 31 (a gauge wheel for adjusting the depth of insertion of a nozzle) that is grounded so as to support the working machine 2 is attached via a stay 27 to the rear of the lower side of the lower frame 19b via a stay 27 so as to be vertically movable.

A sprocket 23 and a crank arm 25 are attached to three crank shafts 22 of the crank operating section 20, respectively. A nozzle arm 29 is pivotally connected so as to form a parallel link over the distal ends of the upper and lower crank arms 25. When the upper and lower crank arms 25 rotate synchronously by the operation of the crank operating unit 20, the nozzle arm 29 are driven up and down, respectively. The nozzle arm 29 and the lower crank arm 25
An accommodation mechanism 32 is provided at the pivot point between the nozzle arm 29 and the nozzle arm 29, while being regulated by the accommodation mechanism 32, can freely swing back and forth in the traveling direction.

Nozzles 30 for discharging fertilizer beneath the formation are detachably fixed along nozzle arms 29, and the tips extend downward longer than the tips of nozzle arms 29 and correspond to the nozzles 30. When the upper and lower crank arms 25 are positioned horizontally with respect to the ground surface, they are the lengths in contact with the ground surface, respectively. Each of the nozzles 30 is inserted into the deepest part of the ground when the crank arm 25 faces downward. However, since the phases of the crank arms 25 of each set are sequentially shifted by 90 °, the crankshaft 22 is rotated counterclockwise. During one rotation in the direction, the nozzle 30 is turned 9 in the order of FIGS.
It is sequentially inserted to the deepest part of the underground with a phase difference of 0 °, and performs a later-described infusion.

A joint 35 is provided at the upper end of the nozzle.
Is attached, and a hose 36 for injecting fertilizer is connected. Behind the left and right end crank arms 19c, a safety frame 33 for connecting these components and surrounding and surrounding the nozzle 30 for protection is projected. On the other hand, a power transmission unit for driving the crank operating unit 20 and for pumping the fertilizer to the nozzle 30, that is, the PTO shaft 2 of the tractor 1
Gear case 12 having an input shaft 11 linked and connected to
Is attached to the horizontal frame 14 that extends to the auxiliary frame 26 that hangs from the left and right of the front frame 16 of the work machine 2.

The relay shaft 40 in the work machine 2 is provided with a torque limiter 41 having an input shaft relay sprocket 38 and three output sprockets 39, and the gear case 12 is provided.
A chain 43 is wound between the output sprocket 42 and the sprocket 38, and a chain 44 is connected between the output sprocket 39 and the input sprocket 23 of each crankshaft 22. Output sprocket 46 and intermittent valve 1 provided on the crankshaft 22 side in the center in rear view
The input sprocket 47 on the side of the gear case 12 is also connected to the input sprocket 47 on the gear case 12 side by the chain 48, and the input sprocket 51 of the pump 49 for fertilizer provided below the inside of the working machine 2 is also connected. And are connected by chains 53 and 56. The input sprocket 51 of each of the four pumps 49 is connected and linked by a chain 57.

As shown in FIG. 2, FIG. 6, and FIG. 7, the number of pumps (four) corresponding to the number of nozzles 30 is combined as a unit. The torque limiter 41 slips when an overload occurs on the nozzle 30 side and stops the operation of the crank operating unit 20. The operation of the time stop valve 13 also stops simultaneously by the stop of the sprocket 46. Prevents fertilizer timing out of order. Furthermore, each intermittent valve 13 is configured to supply fertilizer to the nozzles 30 only at the lowered position where each nozzle 30 is inserted into the deepest part of the ground and for a short time immediately before and after the nozzle 30. The fertilizer circuit is closed.

The above-mentioned tank support 18 is connected to a tank 61 for storing paste fertilizer made of FRP or the like via an anti-vibration rubber.
Are attached detachably, and a flexible suction hose 62 is provided from the tank 61 to each pump 49 on the working machine 2 side.
Each pump 49 is connected to four relay hoses 6.
4, the fertilizer is connected to the intermittent valve 13 via the collective joint 66 and the distribution joint 67, and the fertilizer is distributed and discharged from the intermittent valve 13 to each nozzle 30 by the hose 36. Collective joint 66 is 4
The paste fertilizers sent from the paste pumps are collectively sent to the inlet side of the distribution joint 67 with one hose 69, and the distribution joint 67 distributes the sent paste fertilizer again to each nozzle 30 side. . An accumulator 68 is provided at each inlet of the intermittent valve 13, so that the paste fertilizer sent from the hose 36 is always distributed and discharged to each nozzle at a discharge pressure.

Next, the fertilizer distributing device from the pump 49 to the nozzle 30 will be described in detail. The collective joint 66 is connected to a cylindrical main body 66a and four pumps 49 as shown in FIGS. And one discharge port 66c connected to the distribution joint 67 by one hose 69, and is detachably attached to the side surface of the vertical beam 16a in the front frame 16 in the vertical direction. .

The distribution joint 67 has a cylindrical main body 67.
a, one inlet 67 b connected to the collective joint 66 by a hose 69, and a hose 36 to four accumulators 68.
, And is detachably attached to the upper surface of the front end of the front frame 16 in the left-right direction. Further, as shown in FIGS.
Block-shaped unit 13 with two intermittent valves
a, 13b are formed by being superimposed on the upper and lower two stages, and are removably mounted between the two central nozzle frames 19, 19 via a bracket 71 on the frame side, and the front side of each unit 13a, 13b. Accumulator 68
Is connected and fixed.

The four intermittent valves 13 are arranged such that the valve timings of the two unit valves 13a and 13b, which are set by shifting the valve timing by 180 °, are shifted by 90 ° from each other, so that By operating the valve once, 90 ° as a whole
It operates intermittently each time. The setting of the valve timing between the unit valves 13a and 13b can be easily performed by shifting the set of the input sprockets 47 and 90 by 90 °.

As shown in the figure, the four accumulators 68 have one of the two upper and lower stages offset to the outside, so that the abutment of the accumulators is prevented and the intermittent valve 13 is provided.
Are arranged in close proximity to each other, and the pipes to the valve 30 can be prevented from overlapping.

In the middle of the piping to each nozzle 30, there is provided a connector 72 detachably provided on the front frame 16 at appropriate intervals.

With the above construction, the piping from the pump 49 to the accumulator 68 is simplified by being reduced to a single hose between the joints 66 and 67 on the way, and the number and piping space are reduced, and the piping work is also simplified. Thus, there is an advantage that the performance variation between the pumps 49 is also eliminated. Further, the piping between the distribution joint 67 and the accumulator 68 is also substantially straight and parallel in the first half between the two central nozzle frames 19, 19, and does not hinder other piping or devices. Also, a piping hose from each intermittent valve 13 to each nozzle 30 is guided substantially in parallel between the two central nozzle frames 19, 19 on the central portion of the front frame 16, and is distributed to four connectors 72 in the horizontal direction. The pipes from the connector 72 to each nozzle 30 can also be piped in substantially parallel front and rear directions. As a result, the pipes are orderly, there is no interference between the pipes, and there is no hindrance to movement of other devices or maintenance.

Other intermittent valves 1 for each nozzle 30
Since the nozzle 3 and the accumulator 68 are provided, each nozzle 30 can always independently maintain a constant and uniform discharge amount without being affected by troubles such as clogging of other nozzles. By the way, when a single distribution valve that feeds fertilizer to each nozzle is used by inserting and rotating a rotary valve into the conventional rubber-separated cylindrical valve seat, clogging on the nozzle side, etc. As a result, a gap is generated between the rubber partitions due to an increase in the internal pressure, and the inflow of the paste fertilizer into other nozzles and the non-uniform discharge are caused. Instead of providing the accumulator in this embodiment, it is also possible to perform relief at the time of abnormal pressure by performing relief on the pump side.

[0022]

[Effects of the Invention] According to the device of the present invention configured as described above, the number of pipes between the nozzle and the pump can be combined into a single pipe on the way, so that piping is simplified and a small space is required. In addition, since one of the ports of each joint can be unified, there is an advantage that the structure is simple and the size and cost can be reduced. Also, since a plurality of pumps are provided for a plurality of nozzles, it is possible to prevent non-uniformity in the amount of fertilizer and the timing of fertilizer supply on the nozzle side due to variations in pump performance.

Further, since the intermittent valve is unitized, provided at a plurality of stages at substantially the center on the working machine frame, and distributed to the left and right on the working machine for piping to the nozzle, pipe piping is easily standardized and simplified. In addition, piping can be arranged in parallel in the front-rear direction and the left-right direction, so that bending and interference of piping are prevented. Further, the space along the upper frame in the front-rear direction of the working machine frame can be effectively used, and interference with other devices of the piping and its operation can be prevented.

[Brief description of the drawings]

FIG. 1 is an overall side view of a topdressing device.

FIG. 2 is a rear view of the working machine.

FIG. 3 is an enlarged side view of a main part of a working machine of the topdressing device.

FIG. 4 is a front view of a main part of the work machine.

FIG. 5 is an overall perspective view of a working machine frame and a fertilizer distribution device.

FIG. 6 is a transmission diagram of a working machine operation transmission system.

FIG. 7 is a piping diagram of the fertilizer distribution device.

[Explanation of symbols]

 13 Intermittent valve 13a, 13b Valve unit 30 Nozzle 49 Pump 66 Collective joint 67 Distribution joint

Claims (2)

(57) [Scope of request for utility model registration] A plurality of fertilizer pumps (49) for a plurality of nozzles (30) and a joint for connecting a fertilizer circuit interposed between the pump (49) and the nozzles (30). In each of the pumps (49)
And a distribution joint (67) connecting the outport to each nozzle (30) separately, and the outport of the collective joint (66). A fertilizer distribution device in a top fertilizer device in which a single port is used for the import of the distribution joint (67) and the ports are connected by a single pipe. 2. A distribution joint (67) and a nozzle (3).
An intermittent valve (13) for intermittently supplying fertilizer is provided in each connection pipe of (0), and the intermittent valves (13) are provided as valve units (13a) and (13b) arranged in a plurality of stages. And the valve units (13a) and (13b)
And a pipe extending from the valve units (13a) and (13b) to the nozzle (30) is distributed right and left on the working machine frame. Fertilizer distribution device in the top fertilizer device.