JP4150636B2 - Spreading tube fixing structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a riding management machine such as a boom sprayer, and more particularly to a riding management machine including a liquid spraying device and a granule spraying device.
[0002]
[Prior art]
A boom sprayer, which is a kind of riding management machine for performing intermediate management work in paddy fields and field farming, generally includes a boom nozzle device that is a liquid agent spraying device at the front thereof. Conventionally, it has been desired to enable spraying of granules by means of a boom sprayer. For this reason, for example, as disclosed in Patent Document 1 below, a boom sprayer in which a granule spraying device is arranged at the rear has been developed.
[0003]
However, in the boom sprayer with the conventional granule spraying device as described above, the spraying of the granule is performed at a position behind the driver, and there is a problem that it is difficult to visually check the spraying status.
[0004]
For this reason, a type of boom sprayer in which the particle spraying device is mounted on a boom nozzle device arranged in front of the traveling carriage has been proposed so that the particle spraying status can be easily recognized.
[0005]
In this case, it is effective that the spray tube of the granule spray device is disposed along the center boom and the side boom of the boom nozzle device. In addition, as described in Patent Document 2, when the side boom is slidable and can be expanded and contracted in multiple stages, the spray pipe disposed along the side boom can also expand and contract in accordance with the expansion and contraction of the side boom. desired.
[0006]
[Patent Document 1]
Japanese Patent Laid-Open No. 2000-333584
[Patent Document 2]
Japanese Patent Publication No. 7-53072 [0008]
[Problems to be solved by the invention]
However, the spray tube in the granule spray device must be frequently cleaned, and must be easy to attach and detach. Further, a nested structure or the like is conceivable. However, a complicated configuration of the spray tube causes clogging or failure.
[0009]
Therefore, the present invention is to provide a structure in which the spray tube can be adapted to the expansion and contraction of the side boom with a simple configuration, and the spray tube can be easily attached and detached.
[0010]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the present invention is a spraying method in which spraying tubes (34a, 34b) are fixed along a sliding boom (22) composed of a plurality of booms (22a, 22b) that can slide with respect to each other. The pipe fixing structure includes a fixing bracket (36) for fixing the spray pipe (34a) to the non-sliding boom (22a), and a boom (22b) that slides with respect to the non-sliding boom (22a). And another fixing bracket (52) for fixing the spraying pipe (34b). The spraying pipe (34a) is fixed to the at least one fixing bracket (36) so that the position of the spraying pipe (34b) can be changed. ) And the other spraying pipe (34b) can be connected to each other.
[0011]
Further, it is preferable that the spray pipes (34a, 34b) are detachably fixed to the fixing brackets (36, 52) via support members (40, 54) made of an elastic material.
[0012]
Further, it is preferable that the support (40) is attached to the fixing bracket (36) so that the position thereof can be changed.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.
[0014]
1 and 2 show a boom sprayer, a kind of riding management machine to which the present invention is applied. As shown in the figure, in the boom sprayer 10 according to the present embodiment, a boom nozzle device 14 which is a liquid agent spraying device is installed in front of a traveling carriage 12, and further, a granule spraying device 16 is provided on the boom nozzle device 14. It is installed.
[0015]
The boom nozzle device 14 includes a center boom 20 that is attached to the traveling carriage 12 via a parallel link mechanism 18, and a side boom 22 that is connected to the left and right ends of the center boom 20 so as to be rotatable in the horizontal and vertical directions. It has. The side boom 22 has a liquid agent spraying position aligned with the center boom 20 indicated by a two-dot chain line and a storage position substantially parallel to the central axis of the traveling carriage 12 indicated by a solid line by the hydraulic cylinders 23 and 25. It can swing between. The hydraulic cylinders 23 and 25 can be controlled by operating a boom swing switch on the operation panel 15 installed on the side of the driver's seat 13 of the traveling carriage 12.
[0016]
As shown in FIGS. 3 to 6, the side boom 22 includes a first-stage side boom (hereinafter referred to as “first-stage boom”) 22 a and a second-stage side boom (hereinafter referred to as “two-stage boom”). The first-stage boom 22a is connected to each end of the center boom 20. The two-stage boom 22b is arranged in parallel to the inside of the first-stage boom 22a (the side of the traveling carriage 12 in the folded state) and is slidable with respect to the first-stage boom 22a. Therefore, the side boom 22 can be expanded and contracted as a whole.
[0017]
Various drive mechanisms for extending and retracting the side boom 22 are conceivable. For example, as described in Japanese Patent Publication No. 7-53072, a mechanism that can be expanded and contracted by a drive belt is preferable. That is, although not shown, a pulley is attached to each of a distal end portion (end portion on the center boom 20 side) and a distal end portion of the first-stage boom 22a, and an endless drive belt is wound between these pulleys. The end of 22b is connected to this drive belt. And the rotating shaft of a motor is connected to the pulley attached to the terminal side of the 1st stage boom 22a. In such a configuration, when the motor is driven to rotate the pulley, the drive belt is circulated between the pulleys, and the two-stage boom 22b connected thereto slides relative to the first-stage boom 22a. . Control of the motor, and hence extension / contraction control of the side boom 22, can be performed by operating a boom extension / contraction switch of the operation panel 15.
[0018]
In addition, a pipe 26 having a liquid agent spray nozzle 24 is attached to the center boom 20 and the side boom 22, and the liquid agent is sprayed from the nozzle 24 through the pipe 26.
[0019]
In addition, the code | symbol 27 has shown the coil hose which supplies a liquid agent to the pipe 26 attached to the two-stage boom 22b of the side boom 22. FIG. The coil hose 27 can be expanded and contracted. When the coil hose 27 is extended, the total length of the coil hose 27 easily exceeds the total length of the first-stage boom 22a. As can be understood from FIG. 4, a wire 31 stretched between struts 29 a and 29 b attached to the end and the tip of the first-stage boom 22 a is passed through the center of the coil hose 27, As a result, the coil hose 27 is supported. The end of the coil hose 27 on the center boom 20 side is fixed to the first-stage boom 22a, and is connected to a discharge port (not shown) of a pump for sucking and discharging the liquid agent from the drug tank via an appropriate hose. ing. The other end of the coil hose 27 is fixed by a bracket 33 at the end of the two-stage boom 22b and connected to a pipe 26 along the two-stage boom 22b. Therefore, when the side boom 22 is expanded and contracted, the coil hose 27 is also expanded and contracted, and it is possible to always spray the liquid agent from the liquid agent nozzle 24 of the pipe 26 along the two-stage boom 22b regardless of the expanded and contracted state. .
[0020]
The granule spraying device 16 is detachably installed on the center boom 20 of the boom nozzle device 14. As shown in FIG. 2, the granule spraying device 16 includes a storage tank 28 that stores the granule, a feeding device 30 that feeds the granule in a desired amount from the lower opening of the storage tank 28, and a feeding device 30. It is mainly composed of a spray pipe 34 for spraying the fed granule.
[0021]
The spray pipe 34 is provided with a plurality of granule spray nozzles 32 for spraying the granules at appropriate intervals. Although not shown, one spray pipe is disposed along the center boom 20 of the boom nozzle device 14, and the spray pipe 34 disposed along the side boom 22 with respect to each of both ends of the spray pipe. Are connected by a bellows tube 35.
[0022]
There are two spray pipes 34 along the side boom 22. One is referred to as a first-stage spray pipe 34a along the first-stage boom 22a, and the other is referred to as a two-stage spray pipe 34b along the second-stage boom 22b. A spray tube connected to the bellows tube 35 is a first-stage spray tube 34a.
[0023]
As shown in FIGS. 3, 5, and 6, the first stage spray pipe 34 a is fixed inside the first stage boom 22 a by a substantially U-shaped fixing bracket 36. There are a plurality of the fixed brackets 36 in the longitudinal direction of the first-stage boom 22a, whereby the first-stage spray pipe 34a is disposed substantially parallel to the first-stage boom 22a.
[0024]
The first stage spray pipe 34a is attached to the fixed bracket 36 via a support tool 40 made of an elastic material such as rubber having an arcuate recess 38 that matches the outer shape of the first stage spray pipe 34a. The support tool 40 includes a fastening band 42 made of an elastic material such as rubber, and the first-stage spray tube 34 a is fixed to the support tool 40 by the fastening band 42. The fastening band 42 can be easily unfastened, so that the first stage spray pipe 34a is detachable from the first stage boom 22a.
[0025]
Further, the support 40 is attached to the inner rising portion 44 of the fixed bracket 36. The rising portion 44 extends in a direction perpendicular to the longitudinal direction of the first boom 22a. In addition, a long hole 46 extending along the longitudinal direction of the rising portion 44 is formed in the rising portion 44, and the support tool 40 is attached to the fixed bracket 36 by a butterfly bolt 48 through the long hole 46. Therefore, when the butterfly bolt 48 is loosened, it is possible to change the position of the support tool 40 and consequently the position of the first stage spray pipe 34a in a direction perpendicular to the longitudinal direction of the first stage boom 22a.
[0026]
The two-stage spray pipe 34b is fixed to the inside of the two-stage boom 22b via a substantially U-shaped fixing bracket 52. There are a plurality of the fixed brackets 52 in the longitudinal direction of the two-stage boom 22b, whereby the two-stage spray pipe 34b is arranged substantially parallel to the two-stage boom 22b. The two-stage spray pipe 34b is also detachably fixed by a support tool 54 and a fastening band 56 similar to the support tool 40 and the fastening band 42 described above. The support 54 is fixed to the fixed bracket 52 at a fixed position.
[0027]
The center axis of the two-stage spray pipe 34b fixed by the fixed bracket 52 is the center of the first-stage spray pipe 34a when the first-stage spray pipe 34a is moved up and down along the long hole 46 of the rising portion 44 of the fixed bracket 36. Included on the plane drawn by the axis.
[0028]
Further, a trumpet-like fitting member 58 made of an elastic material such as rubber is attached to the end of the two-stage spray tube 34b.
[0029]
In the above configuration, when the side boom 22 is in the shortest state (that is, the state where the first-stage boom 22a and the second-stage boom 22b overlap), as shown in FIG. 3, the first-stage spray pipe 34a. Are arranged in parallel on the upper side of the two-stage spray tube 34b.
[0030]
In use, the boom swing switch of the operation panel 15 is operated to arrange the side boom 22 so as to be in a straight line with the center boom 20, and then the boom telescopic switch is operated to operate the second boom from the first boom 22 a. The boom 22b is extended to the longest state. At this time, the positional relationship between the first stage spray pipe 34a and the second stage spray pipe 34b is as shown in FIG. 5 or FIG. 6 according to the length and the mounting position of the first stage spray pipe 34a and the second stage spray pipe 34b. Become.
[0031]
In the state shown in FIG. 5, the fitting member 58 at the end of the two-stage spray pipe 34b is slightly closer to the center boom 20 side than the tip of the first-stage spray pipe 34a. In this state, only by loosening the butterfly bolt 48 and lowering the first stage spray pipe 34a along the long hole 46 of the fixed bracket 36, the tip of the first stage spray pipe 34a contacts the fitting member 58, As described above, it cannot be moved downward. Therefore, in such a case, first, the butterfly bolt 48 is loosened to lower the first stage spray pipe 34a and the first stage spray pipe 34a is pressed toward the center boom 20 side. Since the support tool 40 supporting the first stage spray pipe 34a is made of an elastic material, the support tool 40 bends when the first stage spray pipe 34a is pressed. Further, since the bellows tube 35 connected to the end of the first stage spray tube 34a is easily bent, the first stage spray tube 34a is allowed to move toward the center boom 20 due to the bending of the support 40. Of course, the bellows tube 35 can also move the first-stage spray tube 34 a along the long hole 46 of the fixed bracket 36. Thus, the tip of the first-stage spray tube 34a can move along the long hole 46 to a position aligned with the central axis thereof, avoiding the edge of the fitting member 58. When the pressing force applied to the first stage spray pipe 34a is released, the support 40 returns to the original state, and the tip of the first stage spray pipe 34a is fitted to the fitting member 58 accordingly. The stage spray pipe 34a and the two-stage spray pipe 34b are connected to and communicate with each other. Thereafter, the butterfly bolt 48 is tightened. With the above operation, the length of the side spray pipe 34 is extended in accordance with the state in which the side boom 22 is extended.
[0032]
When the side boom 22 is in the longest state, as shown in FIG. 6, the tip of the first stage spray pipe 34a is aligned with the edge of the fitting member 58 of the second stage spray pipe 34b, or both are in the axial direction. In the case where a gap is formed, the first stage spray pipe 34a is moved downward along the long hole 46 of the fixed bracket 36 without interfering with the fitting member 58 of the second stage spray pipe 34b. Can do. That is, when the butterfly bolt 48 is first loosened and the first stage spray pipe 34a is lowered, the first stage spray pipe 34a can be moved as it is to the position coaxial with the second stage spray pipe 34b. In this state, the butterfly bolt 48 is tightened. Thereafter, when the boom extender switch of the operation panel 15 is operated to slightly move the second-stage boom 22b toward the first-stage boom 22a, the fitting member 58 at the end of the second-stage spray pipe 34b is moved to the first-stage spray pipe 34a. Approach the tip of the. As a result, the tip of the first stage spray tube 34a is securely fitted to the fitting member 58, and both function as one spray tube.
[0033]
As mentioned above, although preferred embodiment of this invention was described in detail, it cannot be overemphasized that this invention is not limited to the said embodiment.
[0034]
For example, in the above embodiment, the position of the first stage spray pipe 34a can be changed in the vertical direction, but the position of the second stage spray pipe 34b may be changed in the vertical direction.
[0035]
Further, the present invention is applicable even if the sliding boom is composed of three or more booms.
[0036]
【The invention's effect】
As described above, according to the present invention, it is possible to change the length of the spray pipe for spraying the granule according to the expansion and contraction of the side boom of the boom nozzle device. Moreover, since the structure is simple, there are few failures or the like. In addition, since the attachment and detachment of the spray tube is simple, cleaning operations and the like can be easily performed.
[Brief description of the drawings]
FIG. 1 is a plan view of a boom sprayer to which the present invention is applied.
FIG. 2 is a perspective view of the boom sprayer of FIG. 1 as viewed from the front.
3 is a cross-sectional view taken along line III-III in FIG. 1, schematically showing a spray tube fixing structure according to the present invention.
FIG. 4 is a schematic perspective view showing a positional relationship between a side boom and a spray pipe according to the present invention, in which a traveling carriage, a granule spraying device, and the like are omitted.
FIG. 5 is a perspective view schematically showing a spray tube fixing structure according to the present invention.
FIG. 6 is a perspective view schematically showing a spray tube fixing structure according to the present invention. The positional relationship between the first stage spray pipe and the second stage spray pipe is different from FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Boom sprayer, 12 ... Traveling vehicle, 14 ... Boom nozzle device, 15 ... Operation panel, 16 ... Granule spraying device, 22 ... Side boom, 22a ... 1 stage boom, 22b ... 2 stage boom, 34 ... Spreading pipe, 34a ... 1 stage spray pipe, 34b ... 2 stage spray pipe, 36, 52 ... fixed bracket, 40, 54 ... support, 42, 56 ... fastening band, 46 ... long hole, 48 ... butterfly bolt, 58 ... fitting member .

Claims (3)

A spray tube fixing structure for fixing a spray tube (34a, 34b) along a slide boom (22) composed of a plurality of booms (22a, 22b) which are slidable with each other,
A fixing bracket (36) for fixing the spray pipe (34a) to the non-sliding boom (22a);
Another fixing bracket (52) for fixing the other spray pipe (34b) to the boom (22b) that slides relative to the non-sliding boom (22a);
With
Sparge tube for at least one of the fixing bracket (36) (34a) is repositionable secured, arranged other sparge tube and (34b) coaxially, the other spraying and the spraying tube (34a) A spray tube fixing structure characterized in that the tube (34b) can be connected .   The spray pipe (34a, 34b) is fixed to the fixing bracket (36, 52) in a detachable manner via a support (40, 54) made of an elastic material. Scatter tube fixing structure.   3. The spray tube fixing structure according to claim 2, wherein the support (40) is attached to the fixing bracket (36) so that the position thereof can be changed.

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