JP3587629B2 - Spreader dosing arm device - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention provides, for example, one-touch engagement of a metering valve operating rod with a metering arm in a spraying operation of a powdered drug or the like by adjusting a setting of a required discharge amount of a drug or the like (the same spraying amount... The present invention relates to a metering arm device for a sprayer that can be performed by using a method.
[0002]
[Prior art]
For example, a power sprayer used for spraying powdery or granular medicines is provided with a metering valve such as a slide shutter system between a medicine tank and a blower in order to spray a required amount of medicines and the like. In addition, the supply amount of medicine or the like from the medicine tank to the discharge port side of the blower is controlled. The metering valve is opened and closed by turning the valve drive shaft via a metering valve operating rod and a metering arm when an operator operates a metering operation lever by hand, which is necessary. The opening degree of the ejection amount of the medicine or the like is set and adjusted.
[0003]
That is, by adjusting the opening and closing of the metering valve, it is possible to cope with, for example, granules spraying 1 kg per 10 ares, granules spraying 3 kg, or those sprayed with an increased amount, which has become popular in recent years. The discharge amount was set and adjusted. Conventionally, the setting adjustment of the discharge amount is performed by changing the rotation angle range of the valve drive shaft in accordance with the change of the lever ratio of the metering arm.
[0004]
The change of the rotation angle range of the valve drive shaft is performed, for example, by connecting the metering valve operation rod operated by the metering operation lever to the swing end of the metering arm, and connecting the valve to the base end. A metering valve operating rod provided with an elongated hole in which the drive shaft can be slid and fixed freely, or a valve drive shaft fixed to the base end of the metering arm and operated by a metering operation lever on the swing end side The metering valve is provided by providing a plurality of adjusting holes along the longitudinal direction of the metering arm in which the tip of the metering arm is detachably inserted (see Japanese Utility Model Laid-Open No. 4-57255). Was set and adjusted. In addition, there is a method of appropriately adjusting the length of the metering valve operation rod.
[0005]
Note that the above-described configuration is basically the same for a so-called slide shutter type metering valve and a butterfly type metering valve.
[0006]
[Problem to be solved]
The present invention provides one-touch insertion, locking, and removal when inserting and connecting the tip of a metering valve operation rod to one of a plurality of independent adjustment holes provided on the swing end side of the metering arm . It is possible.
[0007]
Conventionally, the connection between a plurality of adjustment holes provided on the swing end side of the dosing arm and the dosing valve operating rod is achieved by inserting a tip end of the dosing valve operating rod into a predetermined adjusting hole of the dosing arm. However, cotter pins, β-pins, circlips and the like were used as retaining means (see Japanese Patent Application No. Hei 7-91360).
[0008]
However, each time the operator sets or changes the discharge amount of the medicine or the like required before the medicine spraying operation, the split pin, the β pin, the circlip, etc., must be once removed, and then re-mounted after the change operation. In addition, there have been problems such as the loss of the retaining members at the work site, which necessitates interruption of the work, and the inconvenience that the adjustment fastening portion is loosened during the work.
[0009]
The present invention has been made in view of the above circumstances, the setting adjustment of the discharge amount of the medicine and the like required during the spraying operation of the medicine and the like, without using an independent retaining member as in the past, by a one-touch operation. It is an object of the present invention to provide a metering arm device for a spreader that can be used.
[0010]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention provides a metering arm of a spraying machine that opens and closes a metering valve by rotating a valve drive shaft via a metering operation lever, a metering valve operation rod, and a metering arm. In the apparatus, one end of the valve drive shaft is fixed to a base end of the metering arm, and a distal end of the metering valve operation rod is inserted and connected along a longitudinal direction on a swing end side of the metering arm. A plurality of freely adjustable adjustment holes are independently formed, and the adjustment hole and the metering valve operation rod can be inserted and locked and removed with one touch by a manual release provided at the tip of the metering valve operation rod. This is a configuration that can be performed by providing a means for holding a free metering arm.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an exploded perspective view of a main part of a backpack type power spreader having a metering arm device showing a related art of the present invention, FIG. 2 is an exploded perspective view of a main portion of the metering arm device of FIG. 1 , and FIG. 4 is a front view of the metering arm device viewed from the valve drive axis direction, FIG. 4 is a cross-sectional view taken along the line IV-IV in FIG. 3, FIG. 5 is a perspective view of the metering arm device according to the present invention, and FIG. 3 is an exploded perspective view of the metering arm device of FIG.
[0012]
In the backpack type power spreader shown in FIG. 1, a blower 1 driven by a prime mover (not shown) and a medicine tank 2 disposed above the blower 1 are mounted on a backpack 3, A metering valve 4 is arranged between the medicine tank 2 and the blower 1 so as to control a supply amount of medicine or the like supplied from the medicine tank 2 to the discharge port 1a side of the blower 1. Is done. Further, a metering operation lever 5 for adjusting a valve opening of the metering valve 4 operated by an operator, and a discharge airflow containing a chemical or the like from the discharge port 1a of the blower 1 are supplied to the outside. A spray tube 6 for spraying is provided at an appropriate position.
[0013]
The metering valve 4 is composed of a discharge control plate 7 and a slide shutter 8 having a middle plate (not shown) that slides in the lateral direction, as shown in the figure. Each of the ejection control plate 8 and the ejection control plate 7 is formed with a plurality of openings through which a medicine can pass, and the plurality of openings can be opened and closed freely.
[0014]
That is, on the lower surface of the slide shutter 8, a valve drive shaft 9 having an engaging portion 9a for engaging with a locking portion (not shown) of the intermediate plate protruding from the lower surface is provided. By rotating the valve drive shaft 9, the middle plate of the slide shutter 8 is slid in the lateral direction, and the opening of the metering valve 4 is changed. The supply amount of the medicine or the like to the ejection port 1a side is controlled.
[0015]
The present invention relates to a metering arm device 10 for controlling the amount of medicine supplied to the discharge port 1a side of the blower 1 by adjusting the opening of the metering valve 4 in the sprayer as described above.
[0016]
As shown in FIG. 1, the metering arm device 10 showing the related art of the present invention includes the valve drive shaft 9 disposed on the lower surface of the slide shutter 8 and extending in the front-rear direction of the body. A metering arm 11 extending in the left-right direction and a metering valve operating rod 13 extending in the vertical direction connected to the metering operation lever 5 via a joint 12.
[0017]
That, Sulfur butterfly amount arm 11 before shown in FIGS. 1-4, an arm plate 11a extending in the lateral direction of the machine body, is composed of the auxiliary plate 11b of the length of the approximately over half of the arm plate 11a I have. The auxiliary plate 11b is adapted to the connecting side of the metering valve operating rod 13 of the arm plates 11a, Ru Tei is integrally configured two-ply by finally the supporting plate 11b and the arm plate 11a bis 14 and 15 .
[0018]
Then, one end of the valve drive shaft 9 is fixed to a base end side of the metering arm 11, that is, a side opposite to a connecting portion of the metering valve operation rod 13. More specifically, a male screw portion 9b formed at the tip of the valve drive shaft 9 is inserted into an insertion hole 16 formed at one end of the arm plate 11a of the metering arm 11, and the nut 18 is used to displace each other. It is firmly fixed so that it does not grow.
[0019]
Further , a plurality of adjustment holes 19 and 20 are provided independently along the longitudinal direction of the swing end side of the metering arm 11 so that the distal end portion 13a of the metering valve operation rod 13 can be inserted and freely connected. is, the tip portion 13a of the adjustment valve operating rod 13 is Ru Tei is inserted locking and pulling out can be configured with one touch into the adjusting hole 19, 20. In the Drawing, but the adjustment hole as described are provided two, bulking otherwise suitably provided can Rukoto a plurality of adjustment holes, such as for three kilometers for and 1 km away.
[0020]
Further , the adjustment holes 19 and 20 and the distal end portion 13b of the metering valve operation rod 13 can be inserted and locked and withdrawn with a single touch, and the adjustment holes 19 and 20 are respectively provided inside the adjustment holes 19 and 20. An elastic ring 21 such as a notch ring formed of a SUS steel wire having an inner diameter smaller than the inner diameter is provided, and the elastic ring 21 is removably fitted on the outer peripheral surface of the distal end portion 13a of the metering valve operating rod 13. This is done by providing concave grooves 23 that match.
[0021]
That is, prior to the two-layer configuration of the arm plate 11a and the auxiliary plate 11b constituting the metering arm 11, the adjustment holes 19 and 20 at the joint portion between the arm plate 11a and the auxiliary plate 11b are respectively provided. The elastic ring 21 having an inner diameter smaller than the inner diameter of the adjustment holes 19 and 20 is interposed. Specifically, a counterbore portion 22 slightly larger than the outer diameter of the elastic ring 21 for receiving the elastic ring 21 is formed on the joint surface side of the auxiliary plate 11b with the arm plate 11a to form the elastic ring 21. Is housed.
[0022]
On the other hand, the distal end portion 13a of the metering valve operating rod 13 is bent rearward at approximately 90 ° so as to have a diameter that can be inserted into the adjustment holes 19 and 20, and the outer periphery of the distal end portion 13a. The concave groove 23 into which the elastic ring 21 is detachably fitted is formed on the surface. In the above configuration , the bent distal end portion 13a of the metering valve operation rod 13 can be inserted and locked and removed from the adjustment hole 19 or 20 with one touch.
[0023]
That is, if the tip 13a of the metering valve operating rod 13 is inserted into the adjustment hole 19 or 20, the elastic ring 21 is initially pushed outward by the tip 13a of the metering valve operating rod 13 once. When the concave groove 23 formed in the distal end portion 13a reaches the elastic ring 21, the elastic ring 21 returns to its original state by its elastic force, and is adapted to the concave groove 23 and easily pulled out. Nothing. However, since the elastic ring 21 is merely fitted in the concave groove 23, if the elastic ring 21 is pulled with a predetermined force or more, it can be easily removed.
[0024]
In the metering arm 10 having the above-described configuration , the setting and adjustment of the discharge amount of the medicine or the like in the sprayer can be performed by the lever ratio of the metering arm 11 included in the metering arm device 10 as in the related art, that is, This is performed by changing the connection positional relationship between the valve drive shaft 9 fixed to the base end of the metering arm 11 and the metering valve operating rod 13 connected to the swing end side. Therefore, when changing the discharge amount of the medicine or the like, the tip portion 13a of the metering valve operation rod 13 is once withdrawn from any of the adjustment holes 19 or 20 formed on the swing end side of the metering arm 11, and The reconnection is completed with a single touch by simply re-penetrating through one of the adjustment holes 20 or 19 corresponding to the discharge amount of the medicine or the like required for the actual spraying operation.
[0033]
5 and 6 illustrate the present invention . Also in the present invention, fixing of the base end side of the metering arm 11 constituting the metering arm device 10 of the power spreader and the valve drive shaft 9 is the same as in the related art described above. The connection between the swinging end side and the metering valve operating rod 13 is made by adjusting the fertilizer adjusting hole 28 and the adjusting hole 19b for setting and adjusting the required discharge amount of the medicine or the like on the swinging end side of the metering arm 11. , 20b are provided at intervals, and the fertilizer adjustment holes 28 and the adjustment holes 19b, 20b are provided with an arm plate 11a, and a little more than half of the arm plate 11a as shown in FIGS. the length of the auxiliary plate 11b, without the need for screws 14, 15 and the elastic ring 21, just distal end 13a of the metering valve operating rod 13 is Ru formed as by through hole is inserted. Na us, the tip of the tip portion 13a of the metering valve operating rod 13 as in the drawings examples are previously subjected to chamfering, the fertilizer adjusting hole 28, adjustment hole 19b, readily allowed the insertion into the 20b It is desirable to keep.
[0034]
The same components as those of the above-described related art of the present invention are denoted by the same reference numerals, and only different portions will be described below.
[0035]
That is, in the present invention, a clamping member 31 is provided at the distal end portion 13a of the regulating valve operation rod 13 as clamping means for the manually releasable regulating arm 11.
[0036]
Specifically, first, an inverted L-shaped pin support plate 32 is fixed to the outer surface of the tip portion 13a of the metering valve operating rod 13 by welding or the like with the tip portion 13a protruding. A pin 33 is implanted at a lower portion of the outer surface of the pin support plate 32 by welding or the like, and a part of the rear end of the pin support plate 32 is bent toward the pin 33 to form a stopper portion 32a. Is done.
[0037]
Then, the manually releaseable holding member 31 for holding the metering arm 11 between the pin 33 and the pin support plate 32, specifically, the stopper portion 32 a formed on the pin support plate 32. Is attached.
[0038]
Specifically, each of the holding members 31 has an insertion hole 31a for the pin 33, and two right and left support portions 31b, 31b provided at appropriate intervals, and a direction perpendicular to the support portions 31b, 31b. That is, in the same direction as the metering arm 11, the holding piece 31d which is bent with the receiving recess 31c of the metering arm 11 and the holding release knob 31e integrally extended below the holding piece 31d. The pinching portion 31d is normally pressed against the stopper portion 32a of the pin support plate 32 by the force of a spring 34 described later.
[0039]
That is, the main portion of the spring 34 is wound around a portion between the two support portions 31b, 31b of the pin 33, and the upper end 34a of the wound spring 34 is The lower end 34b of the spring 34 is locked to the inner surface of the holding release knob 31e of the holding member 31, and the holding release knob 31e is That is, it is always urged to the opposite side of the metering valve operation rod 13. As a result, the holding piece 31d on the upper side of the holding release knob 31e is connected to the metering valve operating rod 13 side, specifically, the pin support plate 32 fixed to the metering valve operating rod 13. The stopper 32a is constantly pressed.
[0040]
Normally, the tip 13a of the metering valve operating rod 13 is inserted into any of the fertilizer adjustment holes 28 or the adjustment holes 19b and 20b formed on the swinging end side of the metering arm 11. In this state, the swing arm of the metering arm 11 is positioned in the receiving recess 31c between the supporting portion 31b and the holding piece 31d of the holding member 31, and as a result, the attachment by the spring 34 is performed. By the force, the holding piece 31d of the holding member 31 is pressed against the swinging end of the metering arm 11, and the holding piece 31d pushes the swinging end of the metering arm 11 to the pin support plate. 32 and the stopper portion 32a of the metering arm 32, the tip 13a of the metering valve operating rod 13 is moved from the adjusting hole 28 for fertilizer of the metering arm 11 or the adjusting holes 19b and 20b. It is possible to prevent to escape.
[0041]
Next, when the tip portion 13a of the metering valve operation rod 13 is changed and inserted into any of the fertilizer adjusting holes 28 of the metering arm 11 or the adjusting holes 19b and 20b, the holding member 31 What is necessary is just to press the said holding | release release knob part 31e to the said metering valve operation rod 13 side with a fingertip etc. As a result, the swinging end of the metering arm 11 is released from between the holding piece 31d of the holding member 31 and the stopper 32a of the pin support plate 32.
[0042]
Thereafter, the holding piece portion 31d side is opened while pressing the holding release knob 31e of the holding member 31 toward the metering valve operation rod 13 with a fingertip or the like, and the fertilizer adjusting hole 28 of the metering arm 11 is opened. Alternatively, the tip 13a of the metering valve operating rod 13 may be withdrawn from the adjustment holes 19b and 20b.
[0043]
When a new discharge amount is to be set, the tip 13a of the metering valve operating rod 13 fits into the fertilizer adjustment hole 28 or the adjustment holes 19b, 20b of the desired metering arm 11. After that, when the pressing of the holding member 31 by the fingertip or the like on the holding release knob 31e is released, the holding piece 31d of the holding member 31 is moved by the urging force of the spring 34 so that the metering valve operating rod is released. 13, that is, in contact with the swinging end of the metering arm 11, the swinging end is sandwiched between the stopper 32 a of the pin support plate 32, and the metering valve operating rod 13 is prevented from coming off.
[0044]
That is, the tip 13a of the metering valve operation rod 13 can be inserted and locked and removed with a single touch to any of the fertilizer adjustment holes 28 or the adjustment holes 19b and 20b of the desired metering arm 11. .
[0045]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, the setting adjustment of the discharge amount of a required medicine etc. at the time of the spraying operation of a medicine etc. can be performed by one-touch operation, and since the independent retaining member is not used, various problems accompanying the loss etc. Can be solved.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a main part of a backpack type power spreader having a metering arm device showing a related art of the present invention. FIG. 2 is an exploded perspective view of a main portion of the metering arm device of FIG.
FIG. 3 is a front view of the metering arm device of FIG. 2 as viewed from a valve drive axis direction.
FIG. 4 is a sectional view taken along arrows IV-IV in FIG. 3;
FIG. 5 is a perspective view of a metering arm device according to the present invention.
6 is an exploded perspective view of the metering arm device of FIG.
[Explanation of symbols]
4 metering valve 10 metering the metering lever 9 valve drive shaft 5 arm device 11 metering arm 13 metering valve operating rod 13a tip 19 b, 20 b adjusting hole 31 clamping member (clamping means)

Claims (1)

A spraying machine that opens and closes a metering valve (4) by rotating a valve drive shaft (9) via a metering operation lever (5), a metering valve operation rod (13), and a metering arm (11). In the metering arm device (10), one end of the valve drive shaft (9) is fixed to a base end of the metering arm (11), and a longitudinal direction of a swing end side of the metering arm (11). tip of the metering valve operating rod (13) (13a) becomes freely connected are inserted along the adjusting hole (19 b), it is formed independently (20 b) is more than each of the adjusting One-touch insertion and locking and withdrawal of the holes (19b) and (20b) and the metering valve operating rod (13) is performed by a manual release provided at the tip (13a) of the metering valve operating rod (13). It is characterized in that it is performed by providing a clamping means (31) for a free metering arm (11). The metering arm device of the spreader to be used.

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