JP4642633B2 - Drug tank for drug spreader - Google Patents

Description

  The present invention relates to a medicine spraying device such as a boom sprayer, and more particularly to a medicine tank for storing medicine.

  A boom sprayer, a type of chemical spraying device for performing intermediate management work in paddy fields and field crops, is a chemical tank that stores liquid chemicals, a boom nozzle device that sprays chemicals, and a boom that sucks the chemicals in the chemical tanks. And a pump device for pumping to the nozzle device. Such boom sprayers include a self-propelled type that has been incorporated into the traveling vehicle from the beginning of the design and a mounting type that is detachably mounted on the traveling vehicle. In either case of self-propelled type or mounted type, in the case of having a large capacity chemical tank to extend the continuous working time, a chemical tank is installed at the rear part of the traveling vehicle in order to ensure visibility during advancement. ing.

  In recent years, the capacity of such chemical tanks has been further increased. However, when the capacity of the chemical tank is increased, the tank shape is extended forward and backward or upward because the tank width direction (left and right length) is restricted to some extent. When the chemical tank is extended in the front-rear direction, the center of gravity of the entire traveling vehicle moves rearward, and there is a concern about stability problems. Therefore, although it is conceivable to extend the entire medicine tank upward, there is a problem that the rear visual field is blocked by the upper part of the tank.

For this reason, conventionally, for example, a chemical tank as disclosed in Patent Document 1 below has been proposed. As shown in FIG. 6, the drug tank 1 is provided with a convex portion 2 at the center in the width direction on the upper surface thereof, so that the convex portion 2 can cope with an increase in capacity, and on both the left and right sides of the convex portion 2. The rear view can be secured.
Japanese Utility Model Publication No. 3-98964

  However, in the conventional medicine tank 1 as described above, there is a problem that the rear field of view along the central axis in the front-rear direction of the traveling vehicle is blocked by the convex portion 2.

  Further, in the shape in which the convex portion 2 is provided at the center of the upper surface of the medicine tank 1, the medicine inlet 3 is necessarily disposed on the upper surface of the convex portion 2. In such a case, it is necessary to provide a step for the medicine input operation at the center in the width direction of the rear end of the traveling vehicle. However, when the convex portion 2 becomes higher as the capacity of the medicine tank 1 increases, it is necessary to further provide robust steps for guiding the worker to the central step on the left and right. This leads to an increase in the cost of the apparatus and also causes an increase in mass.

  These problems are not limited to boom sprayers, but also exist in other types of medicine spraying apparatuses.

  The present invention has been made in view of the above-described problems in the related art, and an object of the present invention is to provide a medicine tank for a medicine spraying device that secures a rear view and does not require a step in the center of a traveling vehicle. It is to provide.

  In order to achieve the above object, according to the present invention, in the medicine tank (10) for the medicine spraying device (12) installed at the rear part of the traveling vehicle (14), predetermined gaps (28 ) With protrusions (26A, 26B), and drug injection ports (36A, 36B) are formed on the protrusions (26A, 26B).

  In this configuration, since there are two convex portions (26A, 26B) for increasing the capacity, the height is reduced compared to the case of only one convex portion, and the left and right convex portions (26A, 26B). ) Between them, a rear view is ensured.

  In addition, since the left and right convex portions (26A, 26B) are provided with the medicine inlets (36A, 36B), there is no need to provide a step in the center of the traveling vehicle (14), and the left and right steps ( 40A, 40B, and 40C) can perform operations such as drug injection and water supply.

  As described above, as a result of providing the convex portions on the left and right sides, it is possible to ensure a rear view while corresponding to an increase in capacity, and also facilitate backward operation during work.

  In addition, since the number of steps can be limited, cost reduction, weight reduction, and front center of gravity can be achieved.

  In addition, since the medicine inlets are provided at the two left and right positions, it is possible to entrust which one of the medicine inlets to use to the operator, resulting in improved workability.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. As used in the present specification and claims, the words indicating directions such as “up”, “down”, “left”, “right”, “front”, “rear”, etc. are traveling on a horizontal plane. In a state where the medicine spraying device is installed in the vehicle, the state where the normal forward direction of the traveling vehicle is determined as the front is used as a reference.

  1 to 3 show a boom sprayer 12 to which a medicine tank 10 according to the present invention is applied. As understood from FIG. 1, the boom sprayer 12 is mounted on the rear portion of the traveling vehicle 14 and is fixed to the traveling vehicle 14 via the installation frame 16. As in the prior art, the boom sprayer 12 includes a medicine tank 10, a pump device 18 that sucks and pumps the liquid medicine in the medicine tank 10, and a boom nozzle device 20 that sprays the medicine sent from the pump device 18. And.

  As shown in FIGS. 2 and 3, the boom nozzle device 20 has a turn boom 22 attached to the lower portion of the rear installation frame 16 </ b> A so as to be able to swing in the horizontal direction, and swingable at the tip of the turn boom 22. The side boom 24 is attached. In the present embodiment, the side boom 24 has a three-stage extendable structure. A liquid feed pipe (not shown) is attached to the side boom 24, and the medicine pumped from the pump device 18 is jetted from the nozzle of the liquid feed pipe.

  At the time of work, the turn boom 22 and the side boom 24 are arranged substantially in a straight line, and the side boom 24 is extended to the right and used. Further, if necessary, the turn boom 22 can be swung 180 degrees, and the side boom 24 can be extended leftward.

  As clearly shown in FIG. 2, the medicine tank 10 is provided with convex portions 26A and 26B on the left and right portions of the upper surface thereof, and a concave portion 28 as an appropriate gap is provided between the left and right convex portions 26A and 26B. Is formed. The recess 28 extends in the front-rear direction of the tank and has no obstacles. Therefore, when the work vehicle (driver) confirms the rear from the cabin 30 of the traveling vehicle 14, it is possible to visually recognize the rear directly through the recess 28, and the backward operation is extremely easy (see FIG. 1).

  Also. The convex portions 26A and 26B are provided in place of the convex portion 2 of the conventional drug tank 1 shown in FIG. 6, and the capacity of the drug tank 10 of this embodiment and the conventional drug tank 1 is the same. When the dimensions are determined, the heights of the convex portions 26A and 26B are low. That is, since the capacity of one convex portion 2 is distributed to the two convex portions 26A and 26B, the height of the convex portions 26A and 26B is approximately half that of the conventional convex portion 2. Became possible. As a result, a visual field behind the diagonal is also secured.

  In addition, as a result of the elimination of the high convex portion, the rear window 32 of the cabin 30 can be opened (see the two-dot chain line in FIG. 1), the environment in the cabin 30 is improved, and the operator can Access is also possible.

  Furthermore, as shown in FIG. 3, in this embodiment, the left and right portions 34 </ b> A and 34 </ b> B on the front surface of the medicine tank 10 are inclined obliquely rearward. This is also configured to widen the field of view obliquely backward, particularly downward.

On the other hand, medicine inlets 36A and 36B are formed on the top surfaces of the tops of the convex portions 26A and 26B. The drug inlets 36A and 36B are normally closed by lids 38A and 38B. By providing the medicine inlets 36A and 36B on the left and right instead of the center of the medicine tank 10, the worker can perform the medicine feeding operation or the water supply operation from either the left or right according to the work mode and convenience. It becomes. Further, the steps 40A (40A ₁ , 40A ₂ , 40A ₃ ) and 40B that serve as the scaffolding for the worker do not need to be provided in the center as in the prior art. It is only necessary to provide it. As a result, the manufacturing cost of the apparatus can be reduced, and the weight can be reduced and the front center of gravity can be increased.

Further, in the present embodiment, the turn boom 22 is provided with a step 40C (40C ₁ , 40C ₂ , 40C ₃ ). The step 40C is located further outside the steps 40A and 40B of the installation frame 16A. 1 to 3, the position is on the right side of step 40B. However, when the turn boom 22 is swung by 180 degrees, the turn boom 22 is positioned on the left side of the left step 40A. The steps 40A ₁ and 40B of the installation frame 16A are often provided with, for example, a medicine storage box (not shown). In such a case, the step 40C on the turn boom 22 is used to step the storage box. It is possible to easily put the medicine into the medicine tank 10 without dropping from 40A ₁ and 40B, and the workability is remarkably improved.

  Of course, when the place where the medicine storage box is placed is provided separately, for example, when the storage box placement place is provided on either side of the straight line connecting the right step 40B and the right medicine inlet 36B. Has the same effect.

  The drug tank 10 is a synthetic resin molded product, and is generally provided with ribs and irregularities for reinforcement. 4 and 5 are perspective views showing ribs 42 and 44 formed on the left side surface of the medicine tank 10. FIG. 4 shows an insert-molded rib 42 in which a nut 46 is embedded. The pump device 18 and the like can be attached using the nut 46 of the rib 42. FIG. 5 shows a rib 44 having a through hole 48 in the width direction. The pump device 18 and the like can be installed using the through hole 48.

  Furthermore, in this embodiment, as understood from FIG. 3, the front center part 50B and the rear surface center part 50A of the medicine tank 10 are recessed. Although the recesses 50A and 50B also have a reinforcing effect, the medicine tank 10 can be securely fixed by disposing the complementary horizontal bars of the front and rear installation frames 16A and 16B in the recesses 50A and 50B. , Can prevent shaking.

  Further, from the viewpoint of reinforcement, although not shown, it is also conceivable that reinforcing bars and pipes are installed inside and behind the drug tank 10, for example. In the case of a pipe, it can be integrally formed as a forming hole of a medicine tank.

  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. For example, in the above-described embodiment, the medicine tank for the boom sprayer has been described. However, the invention can also be applied to a medicine tank of another type of medicine spraying device of the present invention.

It is a perspective view which shows the mounted boom sprayer provided with the chemical | medical agent tank by this invention. It is a detailed rear view of the boom sprayer of FIG. It is a detailed top view of the boom sprayer of FIG. It is a perspective view which shows the rib formed in the side surface of a chemical | medical agent tank. It is a perspective view which shows the other rib formed in the side surface of a chemical | medical agent tank. It is a figure which shows the conventional chemical | medical agent tank.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Chemical tank, 12 ... Boom sprayer (medicine spraying apparatus), 14 ... Traveling vehicle, 16, 16A, 16B Installation frame, 18 ... Pump device, 20 ... Boom nozzle device, 22 ... Turn boom, 24 ... Side boom, 26A , 26B ... convex part, 28 ... concave part (gap), 30 ... cabin, 32 ... rear window, 36A, 36B ... drug inlet, 40A, 40B, 40C ... step.

Claims (1)

  In the medicine tank (10) for the medicine spraying device (12) installed at the rear part of the traveling vehicle (14), convex portions (26A, 26B) having predetermined gaps (28) are provided on left and right portions of the upper surface thereof, A medicine tank for a medicine spraying device, wherein a medicine inlet (36A, 36B) is formed in each of the convex portions (26A, 26B).

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