JP3332075B2 - Self-propelled spreader - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a self-propelled sprayer which is used, for example, when spraying a chemical solution or the like on agricultural products and which can be easily loaded on and off a truck or the like.

[0002]

2. Description of the Related Art Conventionally, as a self-propelled sprayer of this kind,
For example, one described in Japanese Utility Model Application Laid-Open No. 64-48880 is known. The self-propelled spreader includes a fuselage, a prime mover provided in the fuselage, a pump provided in the fuselage and rotated by power from the prime mover, and a pump clutch for disconnecting power from the prime mover to the pump. A wheel rotatably provided on the fuselage and rotated by the power from the prime mover, a traveling clutch for connecting and disconnecting the power from the prime mover to the wheels, and a wheel rotatably provided on the fuselage and dependent on the power from the pump. It comprises a hose reel to be rotated, and a hose reel clutch for disconnecting power from the pump to the hose reel. In this case, when the traveling clutch is connected, the wheels can be rotated by the prime mover and the aircraft can travel. When the pump clutch is connected, the pump is rotated by the prime mover to pressurize and disperse the chemical solution or the like. When the pump clutch and the hose reel clutch are connected, the hose reel can be rotated by the prime mover to wind up the hose.

[0003]

However, in such a method, when the hose is wound, the clutch for the pump and the clutch for the hose reel are connected. However, the pump is rotated during the winding, and this seizes. There was fear. That is,
The winding of the hose is performed after the spraying of the chemical solution is completed, so that the pump does not need to be rotated, and the pump is rotated in a state where there is no chemical solution. There was a risk of burning. The present invention
In view of the above-mentioned problems, the present invention has been made in order to solve the above problems, and an object of the present invention is to provide a self-propelled sprayer which prevents seizing of a pump.

[0004]

SUMMARY OF THE INVENTION A self-propelled spreader according to the present invention comprises an airframe, a prime mover provided on the airframe, a pump provided on the airframe and rotated by power from the prime mover, and a pump from the prime mover. A pump clutch that disconnects power to the
A transmission provided with an output shaft for shifting the power from the prime mover to rotate forward and reverse and a power take-off shaft for constantly outputting the power from the prime mover, and disconnecting the power from the prime mover to the transmission. A traveling clutch, and wheels rotatably provided on the body and rotated by power from an output shaft of the transmission;
A hose reel rotatably provided on the fuselage and rotated by the power from the power take-off shaft of the transmission, and a hose reel clutch that disconnects and connects the power from the power take-off shaft of the transmission to the hose reel. There is a characteristic in what you do.

When the traveling clutch is connected after the transmission has been operated forward, the wheels can be rotated forward by the prime mover via the traveling clutch and the transmission, and the body can be advanced. When the traveling clutch is connected after the transmission is operated in reverse, the wheels can be rotated backward by the prime mover via the traveling clutch and the transmission, so that the aircraft can travel backward. When the pump clutch is connected, the pump is rotated by the prime mover to pressurize and disperse the chemical solution or the like. When the traveling clutch and the hose reel clutch are connected after the transmission is neutralized, the hose reel is rotated by the prime mover via the traveling clutch, the transmission, and the hose reel clutch, and the hose is wound. When winding the hose, the pump is not rotated.
This can prevent seizure.

[0006] The self-propelled sprayer preferably has a brake that brakes the wheels when the traveling clutch is disconnected and releases the braking when the traveling clutch is connected. In this way, the wheels are braked when the traveling clutch is disconnected, so that the self-propelled spreader can be stopped reliably even on the slope, and safety can be improved.

[0007] The brake is preferably provided in the transmission. This makes it possible to construct the transmission integrally with the transmission, which facilitates assembly and the like.

[0008] In the self-propelled spreader, it is preferable that the pump is located below the prime mover and the transmission is located beside the pump. With this configuration, the width can be reduced as compared with the case where the prime mover and the pump are arranged side by side, and a battery or the like can be mounted in the space above the transmission.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. Drawing 1 is a side view showing the schematic structure of the self-propelled spreader of the present invention. FIG. 2 is a front view of FIG.

The self-propelled spreader 1 includes a body 2, a prime mover 3, a pump 4, a pump clutch 5, a transmission 6, a traveling clutch 7, wheels 8, a hose reel 9, a hose reel clutch 10, and a brake 11. The main part is constituted by.

The body 2 forms a basic part of the self-propelled spreader 1, and in this example, a base frame 12 having a substantially four-frame shape in a plane and a front frame (right side in FIG. 1) downward. U side installed
The left and right vehicle receiving frames 13, a front substantially U-shaped handle 14 provided at the rear of the underframe 12, and a substantially inverted L-shaped left and right side (FIG. 2) At right is left)
Side wheels 15, left and right rear wheels (casters) 16 provided below the handle 14 so as to be rotatable about a horizontal axis and rotatable about a vertical axis, and a motor mount 17 provided on the front side of the underframe 12. And a pump base 18 and the like provided on the left and right vehicle receiving frames 13.

The prime mover 3 is provided on the body 2,
In this example, the engine is an engine, and is mounted on the prime mover frame 17 of the body 2 at a position closer to the left.

The pump 4 is provided on the body 2 and is
In this example, it is a plunger pump, which is attached to the left side of the body 2 on the pump base 18 and is located below the prime mover 3.

The pump clutch 5 disconnects power from the prime mover 3 to the pump 4. In this example, the pump clutch 5 is a belt tension clutch, and a small belt wheel 19 which is wedge-fitted to the output shaft of the prime mover 3 is provided. , A large belt wheel 20 wedge-mounted on the input shaft of the pump 4, and the belt 2
1, a tension roller 22 for tensioning the tension roller 1, and a lever (not shown) for operating the tension roller 22.

The transmission 6 is provided on the body 2 and is provided with the prime mover 3.
An output shaft 23 for shifting the power from the motor and rotating forward and reverse and a power take-out shaft 24 for constantly outputting the power from the prime mover 3 are provided. The gear-type transmission includes a shaft 23, a power take-off shaft (PTO shaft) 24, and a speed change lever 25.
And the output shaft 23 is located below the pump 4, and the transmission lever 25 is moved forward from the neutral position. When the shift lever 25 is operated in the reverse direction, the first forward speed is output from the output shaft 23, and when the shift lever 25 is operated in the reverse direction from the neutral position, the first reverse speed is output from the output shaft 23. A predetermined power is output from the take-out shaft 24.

The traveling clutch 7 disconnects power from the prime mover 3 to the transmission 6, and is a belt tension clutch in this example, and is a small belt wheel 26 wedge-fitted to the output shaft of the prime mover 3. And a large belt wheel 27 wedge-mounted on the input shaft of the transmission 6, and a belt 28
And a tension roller 29 for tensioning the roller, and a lever (not shown) for operating the roller.

The wheels 8 are rotatably provided on the body 2 and are rotated by power from an output shaft 23 of the transmission 6. In this example, the wheels 8 are front wheels, and the output shaft 2 of the transmission 6 is used.
3 is composed of left and right tires wedge-mounted on both sides, and is rotatably provided on the body 2 via the output shaft 23 of the transmission 6.

The hose reel 9 is rotatably provided on the body 2 and is rotated by power from a power take-out shaft 24 of the transmission 6. In this example, the hose reel 9 is provided on the rear side of the underframe 12 of the body 2. A reel shaft 30 provided rotatably about a horizontal axis by means of a bearing, a reel body 31 provided thereon, and a hose 32 wound around this and having a tip (not shown) connected to a tip thereof; Left and right reel flanges 33 provided on both sides of the reel body 31, and a hose 3 provided on one side of the reel shaft 30.
2 and a rotary joint (not shown) for connecting another hose (not shown) from the pump 4.

The hose reel clutch 10 includes a transmission 6
The power take-off shaft 24 is connected and disconnected from the hose reel 9. In this example, a belt tension clutch is used, and a small belt wheel 34 wedge-fitted to the power take-out shaft 24 of the transmission 6, and a hose. A large belt wheel 35 wedge-mounted on the reel shaft 30 of the reel 9 and the belt 3 loosely wound around these
6, a tension roller 37 for tensioning the tension roller 6, and a lever (not shown) for operating the tension roller 37.

The brake 11 brakes the wheels 8 when the traveling clutch 7 is disconnected and releases the braking when the traveling clutch 7 is connected. In this example, the brake 11 includes a braking lever 38 and is provided on the transmission 6. When the traveling clutch 7 is disconnected, the output shaft 23 of the transmission 6 is braked,
When the traveling clutch 7 is connected, the lever of the traveling clutch 7 and the braking lever 38 are connected so that the braking of the output shaft 23 of the transmission 6 is released.

The self-propelled spraying machine 1 is provided above the hose reel 9 and has a hose aligning and winding device 39 for aligning and winding the hose 32 around the hose reel 9;
And a hose reel braking device 41 provided with a release lever that brakes the rotation of the hose reel 9 in the feeding direction to allow rotation in the winding direction and releases the braking itself. I have it.

Next, the operation will be described based on such a configuration. When the vehicle body 2 is driven to move forward, the driving motor 3 is started, and the transmission clutch 6 is engaged after the transmission 6 is operated to move forward. Then, the power of the prime mover 3 is transmitted to the traveling clutch 7 → the output shaft 23 of the transmission 6 → the left and right wheels 8, and these are simultaneously rotated in the forward traveling direction (clockwise in FIG. 2). Accordingly, the body 2 travels forward (to the right in FIG. 2). When the body 2 is to travel backward, the prime mover 3 is started and the transmission 6
Is operated, the traveling clutch 7 is brought into the connected state. Then, the power of the prime mover 3 is
The output shaft 23 of the transmission 6 is transmitted to the left and right wheels 8 and is simultaneously rotated in the reverse traveling direction (clockwise in FIG. 2), so that the body 2 travels backward.

When the traveling direction is changed, the direction can be changed by changing the direction of the body 2 using the handle 14.
When stopping the body 2, the traveling clutch 7 is set to the disconnected state. Then, the power of the prime mover 3 is not transmitted to the wheels 8, and the brake 11 is operated to brake the output shaft 23 of the transmission 6 and the rotation of the wheels 8 is stopped.

When the pump 4 is operated, the motor 3 is started and the pump clutch 5 is connected. Then, the power of the prime mover 3 is transmitted from the pump clutch 5 to the pump 4, which is rotated to pressurize and spray the chemical solution or the like.

When pulling out the hose 32, an operator grips the tip of the hose 32 and pulls it out. Then, the hose reel 9 is rotated in the unreeling direction (counterclockwise in FIG. 2). However, since the hose reel braking device 41 applies an appropriate amount of braking, the hose reel 9 is not rotated more than necessary and the hose 32 is not rotated. There is no slack. At this time, the rotation of the hose reel 9 in the feeding direction is transmitted to the hose aligning and winding device 39 by the belt transmission 40, and the hose 32 wound around the hose reel 9 is pulled out in an orderly manner. Hose reel braking device 41
When the release lever is operated, the brake itself of the hose reel 9 is released, and the rotation thereof can be made free.

When winding the hose 32, the motor 3 is started, and the transmission 6 is neutralized, and then the traveling clutch 7 and the hose reel clutch 10 are connected. Then, the power of the prime mover 3 is
→ The power take-out shaft 24 of the transmission 6 → the hose reel clutch 10 → the hose reel 9, which is rotated in the winding direction (clockwise in FIG. 2). When the hose reel 9 is rotated in the winding direction, since the hose reel 9 is allowed to rotate in the winding direction by the hose reel braking device 41, the hose reel 9 is not braked. At this time, the rotation of the hose reel 9 in the winding direction is transmitted to the hose alignment winding device 39 by the belt transmission device 40, so that the hose 32 is wound around the hose reel 9 in an orderly manner.

When winding the hose 32, the pump clutch 5 does not need to be in the connected state, so that the pump 4 is not rotated, so that seizure of the pump 4 can be prevented.

When lowering the self-propelled spreader 1 from the bed of a truck or the like to the ground via a slope, an operator is positioned behind the self-propelled spreader 1 and travels forward. In this way, the self-propelled spreader 1 descends the slope at a predetermined speed (first forward speed) by the transmission 6, so that the worker only needs to attend and can safely descend. In other words, in the past, with the motor stopped, the worker was positioned behind the self-propelled spreader, and gradually lowered its own weight while supporting it. There was a possibility of runaway without a constant descent speed.

When the self-propelled spreader 1 is to be loaded from the ground onto a bed such as a truck via a slope, an operator is located behind the self-propelled spreader 1 and runs backward. In this way, the self-propelled spreader 1 climbs the slope at a predetermined speed (first reverse speed) by the transmission 6, and the worker is always located above the self-propelled spreader 1 on the slope. For example, even if the self-propelled spreader 1 slips and descends, there is no fear that the worker will be laid down. In other words, conventionally, a worker is located below the self-propelled spreader on the slope and travels forward to climb it. There was a fear that it would be an underlay.

Since the self-propelled spreader 1 includes the transmission 6, even if the belt 28 of the traveling clutch 7 is cut, the wheels 8 are easily rotated by the gear group of the transmission 6. Because there is nothing, there is no accidental descent on the slope, and safety is high.

The transmission 6 is, in the above example, one forward and one reverse.
Although it was fast, the present invention is not limited to this. The pump clutch 5, the traveling clutch 7, and the hose reel clutch 10 are belt tension clutches in the above example, but are not limited thereto, and may be, for example, disc clutches or the like. In the above example, the brake 11 is provided in the transmission 6 to brake the output shaft 23. However, the invention is not limited thereto. For example, the brake 11 may be provided between the output shaft 23 of the transmission 6 and the wheels 8. good.

[0032]

As described above, according to the present invention, as described above,
The following excellent effects can be obtained. (1) a fuselage, a prime mover provided therein, and a pump provided in the fuselage and rotated by power from the prime mover,
A pump clutch that disconnects power from the prime mover to the pump, an output shaft that is provided on the fuselage and changes the power from the prime mover to rotate forward and reverse, and a power take-out shaft that constantly outputs the power from the prime mover are provided. A transmission, a traveling clutch for connecting and disconnecting power from the prime mover to the transmission, a wheel rotatably provided on the vehicle body and rotated by power from an output shaft of the transmission, and a rotatably provided on the vehicle body The hose reel is rotated by the power from the power take-off shaft of the transmission, and the hose reel clutch connects and disconnects the power from the power take-out shaft to the hose reel. Can be prevented.

[Brief description of the drawings]

FIG. 1 is a side view showing a schematic structure of a self-propelled spreader according to the present invention.

FIG. 2 is a front view of FIG. 1;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Self-propelled spreader, 2 ... Body, 3 ... Motor, 4 ... Pump, 5 ... Pump clutch, 6 ... Transmission, 7 ... Running clutch, 8 ... Wheels, 9 ... Hose reel, 10 ... Hose reel Clutch, 11: brake, 12: underframe, 13: vehicle receiving frame, 14: handle, 15: side frame, 16: rear wheel, 17
... Mounting frame, 18 ... Pump frame, 19,24,26,
34 small belt wheel, 20, 27, 32, 35 large belt wheel, 21, 28, 33, 36 belt, 22, 29, 3
7 ... tension roller, 23 ... output shaft, 24 ... power take-out shaft, 25 ... speed change lever, 30 ... reel shaft, 31 ... reel body, 32 ... hose, 33 ... reel flange, 38 ... brake lever, 39 ... hose arrangement winding Device, 40 ... belt transmission device,
41 ... Hose reel braking device.

────────────────────────────────────────────────── ─── Continuation of the front page Examiner Hiroshi Sekine (56) References JP-A-10-33105 (JP, A) JP-A-56-72638 (JP, A) JP-A-52-88117 (JP, A) Kaihei 10-165072 (JP, A) JP-A 64-44880 (JP, U) JP-A 3-1449 (JP, U) JP-A 6-24482 (JP, U) JP 4-50936 (JP, U) JP, Y2) (58) Fields investigated (Int. Cl. ⁷ , DB name) A01M 7/00

Claims (1)

(57) [Claims] 1. An airframe, a prime mover provided in the airframe, a pump provided in the airframe and rotated by power from the prime mover, a pump clutch for disconnecting power from the prime mover to the pump, and A transmission provided with an output shaft for shifting the power from the prime mover for forward and reverse rotation and a power take-off shaft for constantly outputting the power from the prime mover, and a traveling type for disconnecting the power from the prime mover to the transmission. A clutch, a wheel rotatably provided on the body and rotated by power from an output shaft of the transmission, and a hose rotatably provided on the body and rotated by power from a power take-off shaft of the transmission. A reel, a hose reel clutch for disconnecting power from the power take-off shaft of the transmission to the hose reel, and a brake for braking the wheels when the traveling clutch is disconnected and releasing the braking when the traveling clutch is connected, Or And a pump below the prime mover
And the transmission is located beside the pump.
A self-propelled sprayer characterized by being used.