JP2001078646A - Applicator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a power applicator free from the restriction on design either in a knapsack type or a mobile type, further excellent in handleability, and capable of easily and surely controlling the amount of application. SOLUTION: A power applicator having a shutter placed at an exit for chemical of a chemical storing tank which can be opened and closed by a closing lever. The applicator is provided with a control means for shutter opening 34 for restricting the maximum allowable opening of the shutter to a specific value, wherein the control means is interlocked with the opening and closing of the shutter, and linked to the closing lever via a cable wire 36, an interlock member 62 which moves following the operation of the closing lever, a stopper 66 which is interlocked with the interlock member and restricts its movement, and an elastic member V6 which allows the movement of the cable wire associated with the operation of the closing lever after the interlock member has interlocked with the stopper.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spraying machine for spraying powdery or liquid sprays such as pesticides, fertilizers and seeds.
More specifically, the present invention relates to a sprayer capable of reliably and easily controlling a spray amount.

2. Description of the Related Art Heretofore, as a power spraying machine for spraying powdery and granular or liquid sprays such as pesticides, fertilizers, seeds, etc., a backpack type in which an operator carries a device and a traveling truck are pushed by a cart. There is known a traveling type that works while being operated. All of these power sprayers, a storage tank for storing the sprayed material, and a centrifugal blower that generates a carrier wind for spraying the sprayed material in the storage tank,
It has an engine which is a drive source of the blower, and an injection tube connected to the blower. The centrifugal blower has a fan volute case forming a spiral chamber arranged around an impeller, and a medicine discharge port of the storage tank is opened in the fan volute case. The medicine ejection port is opened and closed by a shutter. The opening degree of the shutter is changed by operating the operation lever, whereby the amount of the spread object can be adjusted.

[0002] For example, Japanese Utility Model Publication No. Sho 62-40690 discloses a backpack type power spreader. The power sprayer has a main body provided with a metering lever for opening and closing a shutter and a scale plate indicating various positions of the metering lever corresponding to the opening degree of the shutter. Further, the scale plate is provided with a stop piece which can be set at a desired scale position. In this device, before starting the spraying operation,
When the worker sets the stop piece at a predetermined scale position and starts spraying, the metering lever provided on the main body is moved to a position where it comes into contact with the stop piece without visual confirmation. In this case, the opening degree of the shutter becomes a predetermined size, and a desired amount of sprinkle can be sprayed. The metering lever of the mechanism configured as described above has both the opening and closing function of the shutter and the adjusting function of the opening degree of the shutter, so that it is operated only when the spraying operation is about to be started. There is a design constraint that it is necessary and must be arranged at a position where it can be reached by the worker in the working posture.

[0003]

However, in the above-mentioned traveling type power spreader, an operator must grip the handle in the working posture to perform the spreader.
The conventional mechanism for a backpack type power spreader configured as described above is difficult to provide near the handle, and therefore is not suitable for the traveling type power spreader. Therefore, the present invention provides a spraying machine which has no design restrictions in both the backpack type and the traveling type, has good operability, and can control the spraying amount reliably and easily. Aim.

[0004]

SUMMARY OF THE INVENTION The object of the present invention is to open and close a shutter (28) provided in a medicine discharge port (26) of a medicine storage tank (24) by an opening / closing lever (32). A sprayer (2) interposed between the opening / closing lever (32) and the shutter (28) to regulate a maximum allowable opening of the shutter (28) to a predetermined size. Opening restriction means (34) for controlling the shutter opening degree (34)
Is an interlocking member (62) that is linked to the opening and closing of the shutter (28), is connected to the opening and closing lever (32) via a transmission means (36), and moves with the operation of the opening and closing lever (32). ) And a stopper (66) that engages with the interlocking member (62) and regulates the movement such that the opening of the shutter (28) does not exceed the predetermined size.
An operation absorbing means (76) for disabling the operation of the transmission means (36) in response to the operation of the open / close lever (32) after the interlocking member (62) is engaged with the stopper (66); It can be achieved by a sprayer characterized by having:

[0005] The power spreader according to the present invention operates as follows. When the opening / closing lever (32) is operated, for example, the cable wire (36) as a transmission means is pulled, and the interlocking member (62) moves. The interlocking member (6
When 2) is engaged with the stopper (66), the movement of the interlocking member (62) is prevented even if the cable is pulled by the cable wire (36), and the interlocking member (62) is moved by the stopper (66). 66)
The movement of the cable wire (36) accompanying the operation of the opening / closing lever (32) is performed by, for example,
It is absorbed by the elastic member (76) being stretched.
The shutter (28) is opened in conjunction with the movement of the interlocking member (62). When the shutter (28) opens,
An amount of the sprayed material according to the opening degree set in advance by the stopper (66) is discharged from the medicine discharge port (26) and sprayed.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
An embodiment of a sprayer according to the present invention will be described.
The spreader according to the present invention may be any of a hand-held type, a backpack type, and a traveling type. As an example, a traveling type power spreader will be described below. 1 and 2 are a side view and a plan view of a traveling power spreader according to the present embodiment. As shown in FIGS. 1 and 2, the traveling type power spreader 2 includes a frame 4 that supports each part of the apparatus, and front wheels 6 provided at a front end and a rear end of the frame 4, respectively.
An auxiliary side wheel 8 and a driving rear wheel 10, and a handle portion 1 extending diagonally upward from the rear of the frame 4 toward the rear.
And 2.

A centrifugal blower 16 is horizontally provided on the frame 4 via a vibration isolating member 14 made of four cushion materials such as rubber. That is, the blower 1
Reference numeral 6 denotes an impeller (not shown), which is disposed on the frame 4 in a direction in which a rotation axis of the impeller becomes vertical. The blower 16 has a fan volute case 18 forming a spiral chamber arranged around the impeller, an intake port 18a is formed on an upper surface thereof, and an air outlet 20 is provided at a terminal end. ing. A jet pipe 2 for guiding a sprayed material toward a spraying place is provided in the blowout port 20.
2 are connected. Above the front of the blower 16 is provided a storage tank 24 for storing the scattered materials such as agrochemicals, fertilizers, and seeds to be scattered. In the lower part of the storage tank 24, a medicine discharge port 26 is provided which opens toward the inside of the fan volute case 18 and supplies the sprayed material to the blower 16. The medicine ejection port 26 is opened and closed by a so-called butterfly shutter 28 that swings about a rotation shaft 27. Furthermore,
A small air-cooled four-cycle gasoline engine 30 for driving the blower 16 and the rear wheel 10 is provided above a rear portion of the blower 16. An opening / closing lever 32 for remotely controlling opening and closing of the shutter 28 is provided below the left grip 12a of the handle portion 12. On the left side of the main body of the traveling power spreader 2, a shutter opening restriction mechanism 3 for restricting the maximum allowable opening of the shutter 28 to a predetermined size.
4 are provided. The opening / closing lever 32 and the shutter opening regulating mechanism 34 are operatively connected via a cable wire 36 such as a Bowden cable as a transmission means. Further, the shutter 28 and the shutter opening regulation mechanism 34 are connected via a shutter opening / closing mechanism 38 for opening and closing the shutter 28.

FIG. 3 is a view taken in the direction of arrows III-III shown in FIG. 1, and is a view showing details of the shutter opening / closing mechanism. As shown in FIG. 3, the shutter opening / closing mechanism 38 is connected to the shutter opening restriction mechanism 34 described later in detail, and has a rotating rod 40 that is rotated by the shutter opening restriction mechanism 34. A link mechanism 42 is provided between the front end of the rotating rod 40 and the shutter 28. The link mechanism 42 is connected to the rotating rod 4
A swing arm 44 fixed to the end face of the front end of the shutter 28 by welding or the like, and a long hole 48 fixed to the outer end of the rotary shaft 27 of the shutter 28 with a screw and a nut 46.
a metering arm 48 having an a.
4 and a connection link 50 whose other end is connected to the lower end of the metering arm 48. By moving the metering arm 48 in the vertical direction with respect to the rotating shaft 27 to change the effective length of the metering arm 48, a unit rotation angle of the rotating rod 40, that is, as will be described later. The amount of opening / closing of the shutter 28 per unit angle when shifting the stopper lever 68 of the shutter opening restriction mechanism 34 can be changed.

FIG. 4A is a plan view of the shutter opening restriction mechanism, and FIG. 4B is a sectional view taken along the line IV-IV shown in FIG.
It is arrow sectional drawing. FIG. 5 is a graph showing the relationship between V and V shown in FIG.
FIG. 6 is a cross-sectional view taken along the line V-V, and FIG. 6 is a fragmentary sectional view taken along the line VI-VI shown in FIG. As shown in FIGS. 4 to 6, the shutter opening restriction mechanism 34 extends in the horizontal direction in parallel with the front-rear direction center axis OO of the traveling power spreader 2 and the shutter opening / closing mechanism 38. A rotating shaft 60 connected to the rotating rod 40;
A swing member 62, which is an interlocking member fixed to 0, a cylindrical member 64 that receives one end of the rotating shaft 60 and is relatively rotatable coaxially with the rotating shaft 60; It has a rod-shaped stopper 66 fixed to the peripheral wall and extending upward, a stopper lever 68 fixed to the end surface of the cylindrical member 64 and extending upward in an L-shape, and a housing 70 surrounding these. A grip portion 68b provided at an upper end of the stopper lever 68 extends outside the housing 70. As described above, the rotation shaft 60 is connected to the rotation rod 40 of the shutter opening / closing mechanism 38, and the rotation of the rotation shaft 60, that is, the opening / closing lever 32 via the cable wire 36. The rotation of the rocking member 62 rocked by the rotation is transmitted to the rotating rod 40 of the shutter opening and closing mechanism 38, and the shutter 28 is opened and closed. FIG. 4 shows the position of the swing member 62 corresponding to the closed position of the shutter 28. Further, the stopper lever 68 and the stopper 66 are also located at positions that regulate the shutter 28 to the closed position.

[0010] As shown in FIG.
A main body portion 62a extending in a direction orthogonal to the rotation shaft 60, and a stopper engagement portion 62b that extends from the main body portion 62a substantially parallel to the rotation shaft 60 and engages with the stopper 66. It has an L-shaped cross section.
The main body portion 62a is formed with a plurality of holes 62c for mounting a tension spring, which are vertically arranged. A tension spring 76, which is an operation absorbing means described later,
The responsiveness via the cable wire 36 when the opening / closing lever 32 is operated can be adjusted depending on the connection with the cable c. The stopper 66 is disposed on the opening direction side of the shutter 28 with respect to the stopper engagement portion 62b of the swing member 62.

Referring to FIG. 4A, a graduated guide portion 72 having a plurality of recesses 72a to 72e corresponding to different opening degrees of the shutter 28 is formed on the upper wall of the housing 70. You can see that 4 (a), the leftmost side (the center axis O of the power spreader 2)
The concave portion 72a on the side closest to -O) is the shutter 2
8 corresponds to the closed position, while the rightmost recess 7
2e corresponds to the fully open position of the shutter 28,
The recesses 72b to 72d between them correspond to the partially opened position where the shutter 28 is partially opened.
Holding the grip portion 68b provided at the upper end of the stopper lever 68, the stopper lever 68 is opened at a desired opening of the shutter 28 against the urging force of the elastically deforming portion 68a toward the recesses 72a to 72e. The stopper lever 68 is immovably locked in the selected concave portion by shifting the concave portions 72b to 72e corresponding to the degree. 4A and 4B, the stopper lever 68 is locked in the concave portion 72a at a position corresponding to the closed position of the shutter 28. As can be seen from FIG. 4 (b), the swing member 62
Is biased toward a position corresponding to the closed position of the shutter 28 by a biasing member or a tension spring 74. The swinging member 62 is connected to the cable wire 36 on the opposite side of the tension spring 74, that is, on the side in the direction in which the shutter 28 is opened, via a tension spring 76 that is an operation absorbing unit. .

FIGS. 7 and 8 are diagrams showing the operation of the shutter opening restriction mechanism 34. FIG. The operation of the shutter opening restriction mechanism and the shutter opening / closing mechanism according to the present embodiment will be described with reference to FIGS.
In FIG. 4A, the stopper lever 68 is locked in a concave portion 72a (leftmost position) corresponding to the closed position of the shutter 28. In this state, FIG.
As shown in (b), the stopper engaging portion 62b of the swing member 62 is engaged with the stopper 66.
In this state, when the operator grips the open / close lever 32 while holding the left grip 12a of the handle 12 of the power spreader 2, the rotation of the open / close lever 32 causes
The swing member 62 is pulled through the cable wire 36. However, since the swing member 62 is engaged with the stopper 66, the movement of the swing member 62 is prevented. On the other hand, the tension spring 76 is stretched by being pulled by the cable wire 36 to absorb the tension operation of the cable wire 36. Therefore, since the rotating shaft 60 integrated with the swinging member 62 does not rotate, the shutter opening / closing mechanism 38 does not operate, and the shutter 28 remains closed.

Next, for example, the operator moves the stopper lever 68 along the graduated guide portion to a concave portion 72e corresponding to the fully opened position of the shutter 28 (FIG. 7A).
In the rightmost recess). Along with this, the stopper 66 also swings to a position corresponding to the fully open position of the shutter 28, as shown in FIG. At this time, since the swing member 62 is constantly urged toward the position corresponding to the closed position of the shutter 28 by the tension spring 74, it is not engaged with the stopper 66. Next, when the operator grips the open / close lever 32, the swing member 62 is pulled via the cable wire 36, and swings in the opening direction of the shutter 28. When the swing member 62 engages with the stopper 66 at a position corresponding to the fully open position of the shutter 28 (see FIG. 8B), further rotation of the swing member 62 is prevented. The swing member 62
When the rotation shaft 60 is rotated by the rocking motion, the rotation rod 40 of the shutter opening / closing mechanism 38 is rotated. As a result, the swing arm 44 shown in FIG.
Is pivoted to rotate the rotation shaft 27 of the shutter 28, and the shutter 28 is fully opened.

When the stopper lever 68 is locked in any of the recesses between the closed position 72a and the fully opened position 72e of the shutter 28, the swing member 62 is fully opened. The operation is the same as in the case of the full-opening operation, except that the swing is prevented by the stopper 66 just before the position 72e. Which of the recesses the stopper lever 68 should be engaged with may be appropriately selected so that the amount of the sprinkled material that changes according to the opening degree of the shutter 28 becomes a desired amount. When the shutter 28 is opened, the scattered material in the medicine storage tank 24 falls from the medicine discharge port 26 and the blower 16
Is supplied into the fan volute case 18 and is sprayed from the injection pipe 22 according to the conveying wind. According to the present embodiment, since the shutter opening restriction mechanism 34 is provided, the opening of the shutter 28 can be preset to a desired size by the stopper lever 68 before the work, The opening of the shutter 28 can be controlled easily and reliably.

Since the shutter opening restriction mechanism 34 and the opening / closing lever 32 are connected by the cable wire 36, the shutter opening restriction mechanism 3
4 can be arranged at any position advantageous for coupling with the shutter opening / closing mechanism 38, and since the opening / closing lever 32 can be arranged at hand and remotely operated, there are few design restrictions. Therefore, it is particularly advantageous in the traveling type power spreader 2 in which the worker cannot release his / her hand from the grip 12 of the power spreader 2 during work. Further, according to the present embodiment, since the plurality of recesses 72a to 72e corresponding to different degrees of opening of the shutter 28 are provided, the degree of opening of the shutter 28 can be surely controlled, and therefore, the accuracy It is possible to control the amount of the sprayed object. Further, according to the present embodiment, the link mechanism 42 is adopted as the shutter opening / closing mechanism 38,
Further, the shutter 28 is of a butterfly type that swings around the rotation shaft 27, and the rotation of the rotation shaft 60 of the swing member 62 is directly performed as rotation by the link mechanism 42. 28 of the rotating shaft 27
The movement of the swing member 62 and the opening and closing of the shutter 28 can be easily and accurately linked with each other.

The present invention is not limited to the embodiments described above, and various changes can be made within the scope of the invention described in the claims, and these are also included in the scope of the present invention. Needless to say, it is. For example, the shutter 28 is a so-called butterfly shutter 28 that swings around the rotation shaft 27, but the shutter 28 may be a slide shutter that moves in parallel and opens and closes. In the above-described embodiment, the swinging member 62 that transmits the rotation to the shutter opening / closing mechanism 38 via the rotation shaft 60 is employed. The linear movement of the moving member may be transmitted to the shutter opening and closing mechanism 38 to open and close the shutter 28. Further, the tension spring 74 that urges the swing member 62 to a position corresponding to the closed position of the shutter 28 includes a compression spring that urges the swing member 62 to the position, and other compression springs. Any biasing means may be used.
Further, the tension spring 76 interposed between the swing member 62 and the cable wire 36 may be rubber or other appropriate means.

[0017]

According to the present invention, there is no restriction on the design in both the backpack type and the traveling type, the operability is good, and the spraying amount can be controlled reliably and easily. Can be provided.

[Brief description of the drawings]

FIG. 1 is a side view of a traveling power spreader according to an embodiment of the present invention.

FIG. 2 is a plan view of the traveling power spreader shown in FIG.

FIG. 3 is an enlarged view of a main part taken along the line III-III of FIG. 1, showing details of a shutter opening / closing mechanism.

4A is a plan view of a shutter opening restriction mechanism, and FIG. 4B is a cross-sectional view taken along line IV-IV of FIG. 4A.

FIG. 5 is a sectional view taken along the line VV of FIG.

FIG. 6 is a sectional view taken along line VI-VI of FIG. 4 (b).

FIG. 7 is a diagram illustrating an operation of a shutter opening regulation mechanism corresponding to FIG. 4;

FIG. 8 is a view showing the operation of a shutter opening restriction mechanism corresponding to FIG. 7;

[Explanation of symbols]

 2 Power Spreader 24 Drug Storage Tank 26 Drug Discharge Port 27 Rotating Axis 28 Butterfly Shutter 30 Drug Reservoir 32 Open / Close Lever 34 Shutter Opening Limiting Means 36 Cable Wire (Transmission Means) 42 Link Mechanism 60 Rotating Axis 62 Interlocking Member (Swinging member) 66 Stopper 68 Stopper lever 72 Locking means 76 Tension spring (Operation absorbing means)

Continued on the front page (72) Inventor Seiji Iwamoto 1-7-2, Suehirocho, Ome-shi, Tokyo Co., Ltd. (72) Inventor Yoji Inoue 1-7-2, Suehirocho, Ome-shi, Tokyo F-term (Reference) 2B052 BC04 BC08 EB13 2B121 CB09 CB33 CB46 FA02 FA11 4D074 AA05 BB06 BB09 CC04 CC39

Claims (3)

[Claims] 1. A spraying machine (2) wherein an opening / closing lever (32) opens and closes a shutter (28) provided in a medicine discharge port (26) of a medicine storage tank (24), Opening / closing lever (32) and said shutter (28)
And a shutter opening regulating means (34) for regulating the maximum allowable opening of the shutter (28) to a predetermined size, the shutter opening regulating means (34). Is an interlocking member (62) that is linked to the opening and closing of the shutter (28), is connected to the opening and closing lever (32) via a transmission means (36), and moves with the operation of the opening and closing lever (32). )When,
A stopper (66) that engages with the interlocking member (62) and regulates movement so that the opening of the shutter (28) does not exceed the predetermined size;
2) operation absorbing means (76) for disabling the operation of the transmission means (36) in response to the operation of the opening / closing lever (32) after the engagement with the stopper (66).
A sprayer characterized by the above. 2. A stopper lever (68) for moving said stopper (66), and said stopper lever (6).
Sprayer according to claim 1, characterized in that it comprises locking means (72) for locking the shutter (8) at a plurality of positions corresponding to different degrees of opening of the shutter (28). 3. The linking member (62) includes a pivot shaft (60).
The shutter is a butterfly shutter (28) that swings open and close around a rotation shaft (27), and further includes a shutter that swings around a rotation shaft (27). The scatterer according to claim 2, further comprising a link mechanism (42) for transmitting the rotation of the rotation shaft (60) by the swing to the rotation shaft (27) of the shutter (28). Machine.