JP3276040B2 - Power spreader - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power spraying machine for spraying powdery or liquid sprays such as pesticides, fertilizers and seeds while traveling on ridges and the like.

[0002]

2. Description of the Related Art Conventionally, as a power spraying machine used for controlling a paddy field, applying fertilizer, etc., a backpack type power spreading machine is generally used. However, this backpacking type power spraying machine includes a storage tank, a blower, a prime mover and the like. Although the aircraft itself is quite heavy, the weight of the pesticides, fertilizers, seeds, etc. to be sprayed stored in the storage tank is added in addition to the weight. Spraying work while doing it is extremely hard work, and considering the recent aging of farmers, it is possible to carry out spraying work while running storage tanks, blowers, prime movers, etc. on a trolley. desired.

[0003] In order to meet such a demand, for example, as disclosed in Japanese Utility Model Publication No. 4-50929, a storage tank for storing a sprinkle on a base (cart) having wheels, and the storage tank A centrifugal blower for generating a carrier wind for spraying the sprayed object therein, and an engine as a prime mover serving as a drive source of the blower, a pushing handle is provided, and the bogie is pushed. A traveling power spreader has been proposed in which the blower is driven by the engine while the steering wheel is pushed to run, and the spraying operation is performed via a spraying device such as an injection tube connected to the blower.

[0004]

However, the conventional traveling type power spreader as described above has the following problems to be improved. A relatively heavy centrifugal blower is placed sideways with the fan's rotation axis oriented horizontally, and the engine's crankshaft is directly connected to the rotation axis,
Since the storage tank is arranged above the blower, and is mounted on the bogie as it is in a backpacked state, the overall height of the fuselage portion (the portion including the storage tank, the engine, the blower, etc.) is increased, and the position of the center of gravity is also increased. When running on uneven terrain such as ridges with large unevenness, it is difficult to control the aircraft and it is easy to overturn.

[0005] In order to run on uneven terrain by hand, it is necessary to use a self-propelled type because it requires a large amount of labor, if not as much as a backpack type, and has poor running stability and operability. Equipped with a separate prime mover for traveling is disadvantageous in terms of cost, weight, and space,
It is desired that the power of a single mounted prime mover can be appropriately distributed and used as needed for driving the blower and for traveling using a relatively simple configuration.

[0006] When vibrations of a prime mover, a blower, and the like are transmitted to a handle connected to the base, operability is deteriorated and fatigue is easily caused. Therefore, it is desired to take measures to solve the problem. In view of the above, an object of the present invention is to solve the above-described problems, and more particularly, to a power spraying machine that can reduce the overall height and the position of the center of gravity of the fuselage portion to obtain good stability, and to reduce the power of the prime mover. It is an object of the present invention to provide a power sprayer that can be used by appropriately distributing it for use as a fan drive and a drive as required, and that is less likely to transmit vibrations of a prime mover and a blower to a handle connected to a base.

[0007]

In order to achieve the above-mentioned object, a power spreader according to the present invention comprises a base provided with wheels,
A storage tank in which the scattered material is stored, and a blower that generates a conveying wind for spraying the scattered material in the storage tank,
An internal combustion engine serving as a drive source of the blower is mounted, a rotation axis of a fan in the blower is vertically arranged, and the storage tank and the internal combustion engine are provided on an upper surface of a fan volute case horizontally disposed in the blower. An engine is mounted, a handle is connected to the base, and a vibration isolating member is interposed between the base and the fan volute case of the blower.

In a preferred embodiment of the present invention, the power of the internal combustion engine is transmitted to the blower and the wheels via respective belts, and the power transmission is selectively connected and disconnected as necessary. The belt tension clutch is attached to each belt.

Another one of the power sprayers of the present invention is as follows.
In addition to the basic structure, a jet tube is connected to the discharge port of the blower, and a number of spray ports are formed at the tip of the jet tube so as to be aligned, and a flexible end closed at the end. A joint to which a hose having a characteristic is connected rotatably, an arc-shaped gear is provided on the outer periphery of the joint, and a motor in which a pinion meshing with the gear is fixed to a tip end of the injection tube. It is characterized by being attached.

[0010]

In the power spreader according to the present invention having the above-described structure, the rotation axis of the fan is set up along the vertical line, and the blower is laid differently from the state of the backpack type. Since it is arranged in a state, it is possible to lower the overall height of the fuselage portion and the position of the center of gravity of the entire body, and it is possible to make it difficult to fall down when traveling on uneven terrain such as a ridge with large unevenness.

In addition, the power of the prime mover is distributed to the blower and the wheels via a belt, and the power transmission is selectively connected and disconnected as necessary through a belt tension clutch, so that a single unit is provided. The power of the prime mover can be effectively used, the spraying operation can be performed while the medium runs by itself, the increase in cost, weight, and space can be suppressed, and the labor required for the spraying operation can be reduced. In this case, for example, the power of the prime mover can be transmitted only to the wheels and the blower can be stopped before going to the work site, thereby reducing noise and fuel consumption when the vehicle is not performing spraying work. it can.

Further, a handle is connected to the base, and
By interposing a vibration isolating member between the base, the blower, and the prime mover, vibration of the prime mover, the blower, and the like is less likely to be transmitted to the handle, so that good operability and fatigue can be obtained. On the other hand, an injection pipe is connected to the discharge port of the blower, and a joint to which a scatter hose is connected is rotatably connected to the tip of the injection pipe, and an arc-shaped gear is provided on the outer periphery of the joint, and At the tip of the injection tube, a motor with a pinion meshing with the gear is mounted, and switches for controlling the operation of the motor are arranged near the grip of the handle or the like, so that the motor can be run while traveling. The spraying direction of the granular material can be arbitrarily changed according to the rotation of the spraying hose, in other words, the wind direction or the like at hand, and the spraying operation can be performed efficiently by one person.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the accompanying drawings. 1 to 3 are a side view, a plan view, and a front view showing one embodiment of a power spreader according to the present invention. The power spraying machine 10 in the illustrated example is an example of a machine suitable for spraying a powdery or granular scattered material, and includes a frame-shaped frame 12, two horizontal members 14, 14 laid in a ladder shape, and the like. A front wheel 17 made of a pneumatic tire and a wide cylindrical rear wheel 19 with a rubber lug are provided at the front end and the rear end of the base body 11 consisting of the receiving plate 15 mounted thereon, respectively, so as to be able to run stably on the ridge. And are rotatably mounted on a shaft. Behind the front wheel 17 and the rear wheel 19, scrapers (soil removal plates) 18, 18 are provided. On the front end of the base 11, a line marker 29 for facilitating the straight steering operation of the base II is provided upright.

On the substrate 11, vibration damping members 27, 27, 27,
The centrifugal blower 20 is arranged in a state in which the rotary shaft 24 of the fan 25 stands upright along the vertical line, in other words, in a vertical manner. A storage tank 70 for storing scattered materials such as agrochemicals, fertilizers, and seeds to be scattered is provided on the front central portion of the base 11 in the fan volute case 22 having an air inlet 20A on the upper surface of the blower 20. Are connected and supported. When the shutter (not shown) is opened, the sprinkled material in the storage tank 70 is dropped downward and rides on the carrier air generated by the blower 20 to generate the fan volute. It is sprayed to the outside via a jet pipe 85 and a jet head 99 described later connected to the outlet 22a at the end of the case 22.

A small air-cooled two-cycle gasoline engine 30 serving as a dual-purpose drive source for the blower 20 and the rear wheel 19 is provided on the upper surface of the central portion of the fan volute case 22 on the rear side of the base 11 in the fan 20. The crankshaft 32 is fixed and held on the cylindrical support mounting portion 28 in a state of standing upright along the vertical line similarly to the rotating shaft 24 of the fan 25, and the center of gravity of the entire body is set at the rear end. Moving toward the wheel 19, the running stability is improved.

Further, on both sides of the rear portion of the base 11, base end mounting portions 67 of a pair of left and right handles 61A, 61B are mounted via fixing plates 68. The handle 61
Grips 62A, 62B are provided at the upper end portions of A, 61B, and clutch operation levers 63A, 63B are provided. The power of the engine 30 is transmitted to the rotary shaft 24 of the fan 25 via a large-diameter drive pulley 33 fixed to the crankshaft 32, a V-belt 37, and a driven pulley 35, if necessary. A small-diameter drive pulley 34 fixed to the crankshaft 32, a V-belt 38, a driven pulley 36, a relay shaft 39, a universal joint 39A, a speed reducer 4
5, via the small diameter sprocket wheel 46, the chain 47, and the large diameter sprocket wheel 48, are appropriately decelerated and transmitted to the rear wheel 19.

Here, in order that the power transmission of the engine 30 by the two V-belts 37 and 38 can be connected and disconnected as necessary, the two V-belts 37 and 38 are respectively connected to the pair of the blower 20 side. Suitable for power transmission by belt tension clutches 40 and 50, which will be described later, in a relaxed state (non-transmission state) loosely hung between pulleys 33 and 35 and between pulleys 34 and 36 on the rear wheel 19 side. The tension state (transmittable state) to which the tension is applied can be selectively taken.

As shown in FIG. 2, a belt tension clutch 4 attached to the V-belt 37 on the side of the blower 20 is provided.
Numeral 0 has a swinging lever 41 to which a tension roller 43 pressed against the V-belt 37 is attached at one end. The center of the swing lever 41 is swingably supported by a pin 42 set on a fixed portion (here, the upper surface of the blower 20), and the other end is connected to the left side via a Bowden cable 64A. Further, the tension roller 43 is constantly urged by a spring (not shown) in a direction away from the V-belt 37. Therefore, when the clutch operation lever 63A is not gripped by the operator's hand, the swing roller 41 is held at a predetermined position by the urging force of the spring. When separated, the belt tension clutch 40 takes a disconnected (non-transmitting) state. At this time, the V-belt 37 is in a relaxed state, so that power is not transmitted to the blower 20. For it,
When the clutch operation lever 63A is squeezed, the swing lever 41 swings against the urging force of the spring to take a connection (transmittable) state in which the swing lever 41 falls down to the V-belt 37 side, and the V-belt 37 is in a tensioned state. And the power is transmitted accordingly. Thereby, the fan 2 of the blower 20
5 is rotated to generate a conveying wind for spraying.

On the other hand, the V belt 38 on the rear wheel 19 side
The belt tension clutch 50 provided in the same manner as the clutch 40 on the side of the blower 20 also has a swing lever 51 to which a tension roller 53 pressed against the V-belt 38 is attached at one end. ing. The center portion of the swing lever 51 is swingably supported by a pin 52 erected on a fixed portion, and the other end is connected to the right clutch operation lever 63B via a Bowden cable 64B. Further, the tension roller 53 is constantly urged by a spring (not shown) in a direction away from the V-belt 38. Accordingly, when the clutch operation lever 63B is not gripped by the operator's hand, the swing lever 51 is held at a predetermined position by the biasing force of the spring, so that the tension roller 53 is disengaged from the V belt 38. When separated, the belt tension clutch 50 takes a disconnected (non-transmitting) state. At this time, the V-belt 38 is in a relaxed state, so that power is not transmitted to the rear wheel 19 side. For it,
When the clutch operation lever 63B is squeezed, the swing lever 51 swings against the biasing force of the spring, and takes a connection (transmittable) state in which the swing lever 51 falls down to the V-belt 38 side. And the power is transmitted accordingly. As a result, the power of the engine 30 is transmitted to the rear wheel 19, and the base II is driven to run. In the present embodiment, the clutch operation lever 63A,
If you release your hand from 63B, the work is immediately interrupted, so it is safe.

In addition to the above configuration, in the present embodiment, a jet pipe 85 rising up so as to be adjustable in length is connected to the discharge port 22a forming the end of the fan volute case 22 in the blower 20. 4 to 7, a large number of spray ports 92 a, 92 a,... (See FIG. 7) are formed at the tip of the jet tube 85 so as to be aligned with each other. The flexible thin-walled hose 92 whose part is closed is flexible
Is connected rotatably, and an arc gear 91 is fixed to the outer periphery of the joint 90.
A DC motor 87 in which a pinion 88 meshing with the gear 91 is fixed to the tip of the injection tube 85 is mounted on a bracket 86.
The mounting is fixed through.

Further, on the outer peripheral portion of the joint 90, the spray port 92 of the hose 92 disposed inside the joint 90 is provided.
a, 92a, DC motor 95 for rotating a wind pressure adjusting plate 94 for adjusting the pressure of the blown air from ─
6 and fixed. In the power spreader 10 according to the present embodiment having the above-described configuration, the rotation shaft 24 of the fan 25 of the blower 20 is set up along the vertical line, and the blower 20 is placed in a laid state. As a result, it is possible to lower the overall height of the fuselage portion (the portion including the blower 20, the engine 30, the storage tank 70, etc.) and the position of the center of gravity of the entire body. Can improve the stability of the vehicle and make it harder to fall.

The power of the engine 30 is V-belt 3
7 and 38, the power is distributed to the blower 20 and the rear wheel 19, and the power is transmitted to the belt tension clutch 4.
By selectively connecting and disconnecting as necessary according to 0 and 50, the spraying work can be performed while self-propelled while effectively utilizing the power of the single engine 30, and the cost, weight, and space increase. And the labor required for the spraying operation can be reduced. In this case, for example, before going to the work site, only the right clutch operation lever 63B is gripped, the power of the engine 30 is transmitted only to the rear wheel, the left clutch operation lever 63A is released, and the blower 20 Can be stopped, thereby reducing noise and fuel consumption when the vehicle is not performing the spraying operation.

Further, handles 61A, 61 are provided on the base 11.
B, and by interposing vibration isolating members 27, 27,... Between the base body 11 and the blower 20 and the engine 30, vibrations of the engine 30, the blower 20 and the like are provided on the handles 61A and 61B. , And good operability can be obtained and fatigue can be reduced.

On the other hand, the injection pipe 8 is connected to the discharge port 22a of the blower 20.
5 and a sprinkling hose 92
Is connected rotatably to the joint 90 to which the joint 9 is connected.
0 is provided with an arcuate gear 91 on the outer periphery, and a pinion 88 meshed with the gear 91 at the tip of the injection tube 85.
A DC motor 87 for fixing a wind motor is attached to the outer periphery of the joint 90, and a DC motor 95 for rotating a wind pressure adjusting plate 94 disposed in the joint 90 is attached to the outer periphery of the joint 90. Power supply cables 103 and 104 for supplying power from a battery (not shown) are routed to the handles 61A and 61B, and switches (not shown) for controlling the operations of the motors 87 and 95 are provided near grips 62A and 62B of the handle. If it is arranged and operated, it is possible to rotate the spray hose 92 at hand while running the base II, in other words, arbitrarily change the blowing direction of the granular material according to the wind direction, etc. The blowing pressure from the spray outlets 92a, 92a,... Of the hose 92, in other words, the spray You can adjust the lift amount of over scan 92, can be performed efficiently spraying work alone.

In place of the rising jet tube 85, another spraying device, such as a flow spraying ridge jet head 99 as shown by a dashed line in FIG. 3, is attached to the discharge port 22a of the blower 20. Can also. As mentioned above, although one Example of this invention was described, this invention is not limited to the said Example, It does not deviate from the spirit of this invention described in the claim, and various design is possible. It can be changed.

[0026]

As will be understood from the above description, the power spreader according to the present invention can lower the overall height of the body and the position of the center of gravity, obtain good running stability, and reduce the power of the prime mover. The present invention has an excellent effect that it can be used by appropriately distributing it to the blower drive and the drive as needed, and that the vibrations of the prime mover and the blower can be hardly transmitted to the handle connected to the base.

[Brief description of the drawings]

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

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

FIG. 3 is a front view of the power spreader shown in FIG. 1;

FIG. 4 is a partially cutaway enlarged perspective view showing the vicinity of an upper end portion of a jet pipe connected to the power sprayer shown in FIG. 1;

FIG. 5 is a side center sectional view showing the vicinity of an upper end portion of a jet pipe connected to the power spreader shown in FIG. 1;

FIG. 6 is a front vertical sectional view showing the vicinity of an upper end portion of a jet pipe connected to the power sprayer shown in FIG. 1;

FIG. 7 is a diagram that is used for describing the operation of a spraying hose connected to the injection pipe of the power sprayer illustrated in FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Power spreader 11 Base 17 Front wheel 19 Rear wheel 20 Blower 22a Discharge port 24 Rotary shaft 25 Fan 27 Vibration isolator 30 Prime mover 37, 38 V belt 40, 50 Belt tension clutch 61A, 61B Handle 70 Storage tank 85 Spray tube 87 Motor 88 Pinion 90 Joint 91 Gear 92 Spray hose 92a Spray port

──────────────────────────────────────────────────続 き Continuation of front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B05B 17/00 101 A01M 7/00 A01M 9/00

Claims (3)

(57) [Claims] 1. A base (1) provided with wheels (17, 19).
1) a storage tank (70) for storing the scattered material, a blower (20) for generating a carrier wind for spraying the scattered material in the storage tank (70), and a blower (20). An internal combustion engine (30) serving as a driving source is mounted, and a rotation shaft (2) of a fan (25) in the blower (20) is mounted.
4) is disposed vertically, and the storage tank (70) and the internal combustion engine (30) are provided on the upper surface of a fan volute case (22) horizontally disposed on the blower (20).
Is mounted, and handles (61A, 61B) are connected to the base (11).
A power sprayer characterized in that vibration isolating members (27, 27, ...) are interposed between 1) and the fan volute case (22) of the blower (20). 2. The power of the internal combustion engine (30) is transmitted to the blower (20) and the wheels (19) via belts (37, 38), respectively, and the power transmission is selected as required. Belt (3)
7 and 38) respectively.
(0,50) is additionally provided.
A power spreader according to item 1. 3. A discharge port (22a) of the blower (20).
The spray tube (85) is connected to the spray tube (85), and a large number of spray ports (92a, 92a,...) Are formed at the tip of the spray tube (85) so as to be aligned, and the end is closed. A joint (90) to which a flexible hose (92) is connected is rotatably connected. An arc gear (91) is provided on the outer periphery of the joint (90), and the injection pipe (8) is provided.
The power spreader according to claim 1, wherein a motor (87) to which a pinion (88) meshing with the gear (91) is fixed is attached to a tip end of (5).