JP2530039Y2 - Differential mechanism of unmanned traveling sprayer - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The invention relates to a differential mechanism of an unmanned traveling sprayer that sprays a chemical solution while unmannedly steering between ridge-grown crops such as in a horticultural house. .

(B) Conventional technology Conventionally, a simple differential mechanism of an unmanned traveling sprayer has been configured by allowing a wheel boss to freely rotate by a certain angle between a wheel boss loosely fitted to an axle and the axle. The technology has been filed earlier.

FIG. 5 is a perspective view of a differential mechanism of the conventional unmanned traveling sprayer,
FIG. 6 is a side sectional view showing a differential mechanism of the conventional unmanned traveling sprayer.

That is, conventionally, the wheel boss 2 of the front wheel 6 is loosely fitted to the axle 1,
Elongated holes 2a of about 90 degrees are provided up and down in the wheel boss 2, and axle locking pins 16 fitted in the upper and lower elongated holes 2a are fitted.

With this configuration, one of the wheels is free to rotate as much as the axle locking pin 16 is rotatable in the elongated hole 2a, thereby facilitating the rotation of the body during turning.

(C) Problems to be solved by the invention However, in the conventional differential mechanism of the unmanned traveling sprayer, although the width of the long hole 2a is about 90 degrees, the body is held by the steering handle 8 when turning. Even if it is attempted to rotate the wheel, it is not possible to perform a sufficient turning operation because the differential angle is small, and the operator is forced to turn a wheel that does not rotate due to his / her strength by turning the wheel.

In the present invention, the width of the elongated hole 2a provided between the axle and the wheel boss 2 is increased to facilitate the differential turning at the ridge end.

(D) Means for Solving the Problems The problems to be solved by the present invention are as described above. Next, means for solving the problems will be described.

The forward / reverse rotation motor 10 drives the front wheels 6, 6 and the rear wheels 7, 7 to drive the front wheels 6, 6 and the rear wheels 7, 7 in a differential mechanism of an unmanned traveling sprayer that automatically steers the ridge. Supporting each axle 1,
The wheel boss 2 is loosely fitted to the wheel boss 31, the fixed collar 19 is loosely fitted to the axles 1 and 31 in parallel with the wheel boss 2, and a groove is opened between the wheel boss 2 and the fixed collar 19. Stopper on part of
17 and fix the stopper 17 to the wheel boss 2 and the fixing collar.
19, the wheel boss 2 and the fixed collar 19 are integrated, and the lock bolt 18 fixed to the axles 1 and 31 is rotatable in a groove formed between the wheel boss 2 and the fixed collar 19. The lock bolt 18 and the axles 1 and 31 are configured to come into contact with the stopper 17 by making substantially one rotation.

(E) Embodiment The problems to be solved and means to be solved by the present invention are as described above. Next, the configuration of the embodiment shown in the attached drawings will be described.

FIG. 1 is an overall side view of the unmanned traveling sprayer of the present invention, FIG.
FIG. 3 is a plan view showing the steering mechanism, FIG. 3 is a perspective view of the differential mechanism of the present invention, and FIG. 4 is a side sectional view of the axle 1 part.

In FIG. 1, the entire configuration of the unmanned traveling sprayer will be described.

The front wheels 6,6 are supported at the front of the body frame F, the rear wheels 7,7 are supported at the rear, and the front and rear wheels 6,6 and the rear wheels 7,6 are driven by the forward / reverse rotation motor 10 arranged at the front in the body frame F. 7, and the hose take-up reel 5 is driven. The battery 4 is disposed in front of the hose take-up reel 5, and the battery 4 and the hose take-up reel 5 are covered with a bonnet cover 15.

The spout rod 3 is provided upright at the front of the hood cover 15. A chemical solution is discharged from a plurality of nozzles provided in the nozzle rod 3. Steering handle 8 on rear of bonnet cover 15
The steering handle 8 has a forward / reverse rotation motor 10
Operation switches 9 are arranged.

A front contact sensor 11 is provided at the front of the body frame F.
Is disposed, and a rear contact sensor 12 is disposed at a rear portion of the body frame F.

By contacting the front contact sensor 11 and the rear contact sensor 12 with the ridge end collision rod 13 arranged at the ridge end, the forward / reverse rotation motor 10 is automatically switched from forward to reverse to return in the garden house. It is structured to come.

When the unmanned traveling sprayer moves forward, the hose 14 wound on the hose take-up reel 5 is pulled out between the ridges. Then, the hose 14 drawn out in the furrow is wound up.

However, as shown in FIG. 1, the ridge groove is slightly higher at the ridge end, and when the unmanned traveling sprayer returns, the rear contact sensor 12 contacts the ridge end collision rod 13. , Stop the forward and reverse rotation motor 10 and stop the aircraft,
The spray from the orifice rod 3 is stopped. However, since the groove in the field is slightly higher at the end, as it is, it moves forward along the slope and due to its own weight,
The rear contact sensor 12 and the ridge end collision rod 13 come off, stop at a position slightly away from the end, and a state occurs in which spraying continues.

In this configuration, in order to solve the problem, when the rear contact sensor 12 is attached to the ridge end collision rod 13, the operator outside the house is notified by an alarm sound that the chemical solution spraying in one stroke has ended. The stop brake B shown in FIG. 2 is provided to stop at this position.

The stop brake B has a rear contact sensor 12 and a ridge end collision rod.
It is configured to automatically brake at the position where it touches 13.

FIG. 2 shows a configuration in which manual steering is enabled by the steering handle 8.

By turning the steering handle 8 right and left, the handle shaft 20 is turned, the steering arm 21 is turned, and the left and right links are turned.
The push-pull operation of the bearing pivot tube 29 is performed through the 22, 22 to rotate the end axle 28 and the rear wheels 7, 7 about the pivot portions 24, 24.

By operating the steering handle 8, as shown in FIG.
The rear wheels 7, 7 can perform steering rotation.

Next, the main parts of the present invention will be described with reference to FIGS. 3 and 4. FIG.

The wheel boss 2 of the front wheels 6, 6 is loosely fitted to the end of the axle 1. A stopper 17 protrudes from the end of the wheel boss 2 toward the axle 1. A fixed collar 19, which is also loosely fitted to the axle 1, is fixed to the tip of the stopper 17, and an elongated hole extending approximately 360 degrees is formed between the wheel boss 2 and the fixed collar 19. Unlike the conventional axle locking pin 16, a lock bolt 18 protruding only in one direction of the axle 1 is screwed into the approximately 360-degree long hole.

Therefore, the front wheels 6, 6 can freely rotate by an angle of about 360 degrees until the lock bolt 18 contacts the stopper 17.

(F) Effects of the Invention The present invention is configured as described above, and has the following effects.

With the differential mechanism of the unmanned traveling sprayer, the free rotation angle of the wheels is set to approximately 360 degrees with respect to the axles 1 and 31, so when turning the aircraft manually at the ridge end, the wheels can be freed over a wide width. It becomes possible to rotate.

Therefore, as in the past, after the wheels free-rotated by about 90 degrees, if there was no room for free rotation, it was possible to solve the problem that the operator forcedly turned the aircraft with his arm strength. is there.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overall side view of an unmanned traveling sprayer of the present invention, FIG. 2 is a plan view showing a steering mechanism, FIG. 3 is a perspective view of a differential mechanism of the present invention, FIG. FIG. 4 is a side sectional view of the same wheel 1 part, and FIG.
The figure is a perspective view of a differential mechanism of the conventional unmanned traveling sprayer, and FIG. 6 is a side sectional view showing the differential mechanism of the conventional unmanned traveling sprayer. 1,31 axle 2 wheel boss 3 spout rod 4 battery 5 hose take-up reel 10 forward / reverse motor 17 stopper 19 fixed collar

 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Hiroyuki Shibahara 767 Umena, Mishima-shi, Shizuoka Pref.

Claims (1)

(57) [Scope of request for utility model registration] A front wheel (6) and a rear wheel (7) are driven by a forward / reverse motor (10).
In the differential mechanism of the unmanned traveling sprayer that drives the four wheels and automatically steers the ridges, the wheel boss 2 is loosely fitted to the respective axles 1 and 31 that support the front wheels 6,6 and the rear wheels 7,7. , The wheel boss 2
In parallel with this, a fixed collar 19 is loosely fitted to the axles 1 and 31, and a groove is opened between the wheel boss 2 and the fixed collar 19. Is fixed to the wheel boss 2 and the fixed collar 19 by welding, the wheel boss 2 and the fixed collar 19 are integrated, and the lock fixed to the wheels 1 and 31 in the groove formed between the wheel boss 2 and the fixed collar 19. The bolt 18 is rotatable, and the lock bolt 18 and the axles 1 and 31
A differential mechanism for an unmanned traveling sprayer characterized by being configured to make contact with the stopper 17 by substantially rotating once.