JP2001025693A - Push type sprayer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the durability of a machine body frame by improving the weight balance of a sprayer and preventing the application of an excessive load on a part of the frame by installing a battery and a motor above a front wheel, a chemical tank in the middle of a machine body, and an engine in the rear part. SOLUTION: In the push type power sprayer 1, a driving part 21 comprising a battery and a motor is installed above the front wheel 9, a chemical tank 2 is arranged in the middle part, and an engine 3 is installed in the rear part. Accordingly, the weight balance of the sprayer 1 can be improved. The chemical tank 2 is positioned on the opposite side of the battery in terms of a vertical line passing through the center of the front wheel 9 and on the opposite the of the engine 3 in terms of a vertical line passing through the center of a rear wheel 11a. The battery and the engine 3 become counter weights to prevent the application of an excessive load on part of a frame 8. In this way, the durability of the frame 8 can be improved, and the durability of the sprayer 1 can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a push-type spreader having a power spreader mounted on a movable carriage. More specifically, the present invention relates to an arrangement of a battery, a motor, a medicine tank, a sprayer, and an engine of a push-type sprayer that assists traveling by a motor.

[0002]

2. Description of the Related Art Conventionally, a power spreader mounted on a traveling carriage is used to push a ridge (Japanese Utility Model No. 01-1224).
58) and a self-propelled power spreader using the power of an engine of a blower (Japanese Patent Application Laid-Open No. 8-224513). The self-propelled power spreader is configured to drive a rear wheel by reducing a part of a driving force of an engine of a blower. The transmission of the drive to the rear wheels is configured to be disconnected and connected by a clutch, and a blower is provided below the storage tank. The prime mover is disposed above the blower.

[0003]

Problems to be Solved by the Invention
In the self-propelled power spreader shown in FIG. 3, since the driving force of the rear wheel, which is the driving wheel, is performed by the clutch, it is difficult to adjust the traveling speed of the self-propelled power spreader while spraying the medicine by the blower. It is. In addition, since the rotating shaft of the centrifugal blower and the crankshaft of the prime mover, which are relatively heavy, are oriented vertically, the self-propelled power distribution is caused by changes in the drive speed of the blower and changes in the engine speed. A moment about the vertical axis is applied to the machine. For this reason, in order to maintain the traveling direction, it is necessary for the operator to give a force opposing it. In addition, since the storage tank and the prime mover are arranged above the blower, when the storage tank is filled with the medicine, the position of the center of gravity increases, and the stability may decrease. Also, in order to drive the rear wheels, it may be difficult to control the aircraft when traveling on large uneven ridges, etc.
There is a possibility of getting stuck.

[0004]

SUMMARY OF THE INVENTION The present invention has a front wheel and a rear wheel as described in claim 1 in order to solve the above-mentioned problems and to improve the operability and running performance of a push-type spreader. In a push-type spreader in which a power spreader and a medicine tank are arranged on a movable trolley, a battery and a motor are arranged above the front wheels, a medicine tank 2 is arranged in a center part of the body, and an engine is arranged in a rear part. According to a second aspect of the present invention, in a push-type spreader in which a power spreader and a medicine tank are arranged on a movable carriage having a front wheel and a rear wheel, the front wheel is supported by a chain cover. 4. A push-type sprayer according to claim 3, wherein the power spreader and the medicine tank are arranged on a movable carriage having front wheels and rear wheels, and a spray pipe is arranged between the medicine tank and the engine and near the handle. I do.

[0005]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 is an overall side view of a push-type power spreader, FIG. 2 is a plan view thereof, FIG. 3 is a rear view thereof, FIG. 4 is a front side view of the push-type power spreader, and FIG. FIG. 6 is a front plan sectional view of the push-type power spreader.

Referring to FIGS. 1, 2 and 3, the overall structure of the push-type power spreader 1 will be described. The push-type power spreader 1 is constituted by a movable cart 16 and a power spreader 17. The power dispersing device 17 is fixed on a frame of the movable cart 16. The handle 5 is connected to the movable trolley 16, and the front wheel 9 and the rear wheel 11 are arranged below the movable trolley 16. The operator pushes / pulls and changes the direction of the movable cart 16 with the handle 5. Power spraying device 17 on steerable mobile trolley 16
Since the power dispersing device 17 is disposed, the power dispersing device 17 can be operated to move while dispersing a medicine or fertilizer. A driving unit 21 is formed at the front of the movable cart 16, and the driving unit 21 can drive the front wheels 9. The guide device 2 is provided at the lower front part of the movable carriage 16.
2 are provided. The guide roller device 22 is configured to be able to be turned up and down by a guide roller operation lever 23 provided at a rear portion of the movable carriage 16.

[0007] The configuration of the mobile trolley 16 will be described. The moving carriage 16 includes a frame 8, a front wheel 9, and a rear wheel 11a.
11b. The frame 8 is formed by molding a single pipe into a U-shape in a plan view. The front portion is directed upward, and the central portion and the rear portion are configured horizontally. At the rear of the frame 8, a support frame 8b is erected in the vertical direction.
, A power spreader 17 is fixedly mounted. A cover 8a is fixed to the central portion of the frame 8 and the support frame 8b, so that the rigidity of the frame 8 is improved and the power spreader 17 is protected. The cover 8a and the front part of the frame 8 are connected by a stay 8c, and are configured to protect the connection part of the medicine tank 2 with the introduction pipe 7. The base of the handle 5 is connected to the upper part of the support frame 8b. The handle 5 has its base inserted into the upper part of the support frame 8 and is screwed with a pin or bolt to fix the handle 5.

The front wheels 9 of the movable carriage 16 are supported by a chain case 31 connected to the drive unit 21 and a stay 32 fixed to the front of the frame 8. Rear wheel 11a
11b is a support arm 33 connected to the rear of the frame 8.
Are disposed between the lower ends. The support arm 33 is formed in an inverted U-shape in rear view, and a pivot is disposed between the lower ends. The rear wheels 11a and 11b are inserted and fitted to pivots provided between the lower ends of the support arms 33, and are pivotally supported. A collar 11c is provided between the rear wheels 11a and 11b, and the rear wheels 11a and 11b are arranged by the collar 11c.
Is set.

Next, the configuration of the power spreader 17 will be described. The power sprayer 17 includes the fan case 4, the engine 3, the medicine tank 2, and the spray pipe 14. The power spreader 17 is disposed at the rear of the movable carriage 16, and is arranged in the order of the medicine tank 2, the spray pipe 14, the fan case 4, the engine 3, and the fuel tank 24 from the front. The fan case 4 is connected to the frame 8 via a rubber bush.
It is fixed to. A fan (not shown) is provided in the fan case 4. The engine 3 is connected to a rear portion of the fan case 4, and the engine 3 drives the fan. The medicine tank 2 and the fan case 4
They are connected by an introduction pipe 7. The wind generated by the fan is sent to the spray pipe 14 through the lower part of the medicine tank 2. At this time, the chemical tank 2 is
The wind introduced into the lower part of the container is sent to the spraying pipe 14 together with the medicine in the medicine tank 2. Thereby, the medicine in the medicine tank 2 is sprayed to the field from the spray pipe 14 by the air supply from the fan in the fan case 4. The direction of the scatter tube 14 is rotatable in left and right and up and down directions, and can be fixed at an arbitrary rotation position. An accelerator lever 5a is disposed on the left side of the handle 5, and the output of the engine 3 of the sprayer 17 is adjusted by the accelerator lever 5a.

Next, the configuration of the driving section 21 will be described with reference to FIGS. 4, 5 and 6. FIG. The drive unit 21 is provided on a stay 21 b fixed to the front of the frame 8. The drive unit 21 is disposed above the front wheel 9, and the drive unit 21 drives the front wheel 9. Drive unit 2
Reference numeral 1 denotes a motor 10 and a battery 12. The motor 10 is driven by the electric power of the battery 12, and the driving force is transmitted to the front wheels 9 by the chain 31b. The chain 31b is housed in the chain case 31 and is protected from rainwater, dust, etc., and the durability of the chain 31b is increased. The driving force of the motor 10 is transmitted to the front wheels 9 via the speed reducer 10b.
Can also be transmitted to By using the speed reducer 10b, the torque for driving the front wheels 9 can be increased, and the running performance of the push-type power spreader 1 can be improved. The front wheel 9 is supported by a chain case 31 and a stay 32. Since the chain case 31 can have a large cross-sectional area, high support rigidity can be obtained. Since the chain case and the front wheel supporting member are constituted by one chain case 31, the chain case 31 does not interfere with other members, and the number of parts can be reduced.

In this embodiment, the front wheels 9 are driven via a one-way clutch mechanism. The one-way clutch can be arranged at the above-described speed reducer 10b or at the hub of the front wheel 9. Thereby, the driving force of the motor 10 can be used as an assisting driving force when the push-type power spreader 1 is pushed. Since the driving force of the motor 10 is used as an assist, power consumption can be reduced. The driving assist of the push-type power spreader 1 by the driving force of the motor 10 can be adjusted by the controller 6. If the diameter of the front wheel 9 is increased in order to improve the running performance of the front wheel 9, the moment of the front wheel 9 increases, and the front wheel 9 is hard to roll.
Since the motor is assisted by the motor 10, the increase in the moment due to the increase in the diameter of the front wheel 9 can be eliminated, and the operability can be improved while improving the running performance. As a result, the labor required for running the push-type power spreader 1 can be reduced,
Operability of the push-type power spreader 1 can also be improved. Further, since the front wheels 9 are driven, the running performance on rough roads is improved, and the burden on workers on grooves, muddy roads, slopes on roads and rice fields, etc. is reduced.

In the above configuration, the battery 12 is connected to the front wheel 9
The motor 10 is disposed forward of the center of the front wheel 9.
It is located just above the center. Thereby, the battery 1
2 can be sufficiently applied to the front wheel 9, and the grounding of the front wheel 9 can be ensured. Stay 21b for fixing drive unit 21
Has a structure projecting forward, and a stay 21b protects the front part of the drive unit. The drive unit 21 is provided with a cover 21c, which protects the battery 12 and the motor 10 from rainwater and dust.

The drive unit 21 is controlled by the handle 5. The handle 5 is provided with a controller 6 for adjusting the number of revolutions of the motor 10, and the number of revolutions of the motor 10 is adjusted by the control switch 6. The control switch 6 is provided at the end so that when the operator holds the handle 5, it is located close to the operator. Further, the control switch 6 is configured to be able to turn on / off the driving of the motor 10 or to continuously adjust the number of revolutions, so that the operator can control the driving of the motor 10 at hand. As a result, the operability of the push-type power spreader 1 can be improved, the number of rotations can be adjusted in accordance with the walking speed of the worker, and power consumption can be reduced. The method of adjusting the rotation speed of the motor 10 by the control switch 6 is not particularly limited, as long as the rotation speed of the motor 10 can be adjusted. A method of adjusting the voltage applied to the motor 10 by a variable resistor, a method of adjusting a base voltage of a transistor to adjust a current flowing through the motor 10, and a control switch 6 for intermitting a relay connected to the motor 10 to control the driving of the motor 10. Any method can be used as long as it generally adjusts the number of rotations of the motor.

Next, the layout of the push-type power spreader 1 will be described. The push-type power spreader 1 has a drive unit 21 including a battery 12 and a motor 10 disposed above a front wheel 9, a medicine tank 2 disposed at a center part, and an engine 3 disposed at a rear part. I have. In use, the battery 12, the chemical tank 2, and the engine 3 occupy most of the weight of the push-type power spreader 1. These battery 12, drug tank 2 and engine 3
Since they are disposed at the front, center and rear of the push-type power spreader 1, respectively, the weight balance of the push-type power spreader 1 can be improved. The chemical tank 2 is located on the opposite side of the battery with respect to a vertical line passing through the center of the front wheel 9 and on the opposite side of the engine with respect to a vertical line passing through the center of the rear wheel 11a. For this reason, the battery 12 and the engine 3 serve as counterweights of the medicine tank 2 to prevent an excessive load from being applied to a part of the frame 8. That is, since the battery 12 is disposed above and forward of the center of the front wheel 9 and the engine 3 is disposed behind the rear wheel 11a, an excessive load applied to a part of the frame 8 can be eliminated. Thereby, the durability of the frame 8 can be improved, and the durability of the push-type power spreader 1 can be improved. Since the weight balance of the push-type power spreader 1 can be improved, the operability is improved.

The lower portion of the medicine tank 2 is connected to the introduction pipe 7 by a restraint. The medicine tank 17 of the sprayer 17 is configured to be detachable from the push-type power spreader 1. The drive unit 21 disposed in front of the chemical tank 2 is configured at a position lower than the upper part of the chemical liquid tank 2, and the side of the connection part 7b is not covered with the cover 8a. Thereby, the medicine tank 2 can be easily removed. Even when removing the medicine tank 2 from the front of the push-type power spreader 1, the driving unit 21 is disposed at a low position, so that it does not become an obstacle.

The spray pipe 14 is located between the chemical tank 2 and the engine 3 and is located near the support frame 8b. A mechanism for adjusting the ejection direction of the medicine in the up, down, left, and right directions is provided in the spray tube 14, and an adjustment lever 35 for adjusting the spray amount of the medicine is provided beside the spray tube 14. The adjustment lever 35 is provided at a position higher than the fan case 4. Spray tube 14 is handle 5 from the chemical tank
Side, the engine 3 and the fan case 4
Since the is arranged at a lower position than the scatter tube 14, when the worker adjusts the position of the scatter tube 14, there is no obstacle in the space where the adjustment work is performed, and the adjustment can be easily performed.

[0017]

According to the first aspect of the present invention, there is provided a push-type spreader in which a power spreader and a medicine tank are disposed on a movable trolley having front wheels and rear wheels, wherein a battery and a motor are provided above the front wheels and the center of the body. Since the medicine tank 2 is provided in the section and the engine is provided in the rear section, the weight balance of the push-type power spreader can be improved. The battery and the engine serve as counterweights for the chemical tank, preventing excessive load on a portion of the frame. Excessive load on a part of the body frame can be eliminated. The durability of the frame can be improved, and the durability of the push-type power spreader can be improved. Since the weight balance of the push-type power spreader can be improved, operability is improved.

According to a second aspect of the present invention, in a push-type spreader in which a power spreader and a medicine tank are arranged on a movable carriage having a front wheel and a rear wheel, the front wheel is supported by a chain cover. And the number of parts can be reduced.

According to a third aspect of the present invention, there is provided a push-type sprayer in which a power spreader and a medicine tank are arranged on a movable carriage having front wheels and rear wheels, and a spray pipe is provided between the medicine tank and the engine and near the handle. Is arranged, the medicine tank can be easily removed, and the position of the spray tube can be easily adjusted.

[Brief description of the drawings]

FIG. 1 is an overall side view of a push-type power spreader.

FIG. 2 is a plan view of the same.

FIG. 3 is a rear view of the same.

FIG. 4 is a front side view of the push-type power spreader.

FIG. 5 is a front front view of the push-type power spreader.

FIG. 6 is a front sectional plan view of a push-type power spreader.

[Explanation of symbols]

 2 drug tank 3 engine 4 fan case 5 handle 6 controller 7 introduction pipe 8 front frame 9 front wheel 10 motor 12 battery 14 spray tube

Claims (3)

[Claims] 1. A push-type spreader in which a power spreader and a medicine tank are arranged on a movable carriage having front wheels and rear wheels,
A push-type spraying machine characterized by disposing a battery and a motor above a front wheel, a medicine tank 2 in a center part of an airframe, and an engine in a rear part. 2. A push-type spreader in which a power spreader and a medicine tank are arranged on a movable cart having front wheels and rear wheels,
A push-type spreader, wherein the front wheel is supported by a chain cover. 3. A push-type spreader in which a power spreader and a medicine tank are disposed on a movable cart having front wheels and rear wheels,
A push-type sprayer, wherein a spray tube is disposed between the medicine tank and the engine and near the handle.