JPS5818642Y2 - tiller - Google Patents

Description

[Detailed description of the invention] The present invention relates to a tiller, in which a rotary working machine is connected to the rear of the tiller body, and when the machine turns (turns around), the rotary tiller cover button and the The swinging parts such as the tail wheel device are bent and swung forward with respect to the tiller body to reduce the lifting load, and the rotational movement of the rotating parts such as the rotary tiller claws is stopped to ensure worker safety. It is characterized by this.

Conventionally, when turning a tiller, it is not necessary to lift the handle upward and turn the tiller while leaving a gap between the lower end of the rotary trajectory surface of the single tiller claw and the field. As is well known, even when the handle is lifted upward, the rotation of the rotary tiller claws continues, resulting in a lack of safety.

Furthermore, the operation of lifting the handle upward requires a relatively large amount of effort, especially for women and girls, and there is a risk that the efficiency of the turning operation will be lowered, and the efficiency of the tilling operation will be lowered.

Therefore, the present invention relates to a tiller in which a rotary working machine is connected to the rear of the tiller body, and the tiller cover and tail wheel are connected to the rotary power transmission case integrally connected to the tiller body through a rotation fulcrum shaft. A guide plate having a U-shaped guide hole is provided on the = side of the transmission case to connect the swinging parts of the device, etc., while swinging the operating iron located at one end of the guide hole in the normal state. The rotary transmission case is provided on the side of the rotary transmission case to lock the swinging part from the rotary transmission case, and when the iron is operated, the locking of the swinging part from the rotary transmission case is released, and by the movement of the iron. The purpose of the present invention is to provide a tiller configured to stop the rotation of the rotary tiller shaft, thereby reducing the lifting load of the button when turning, improving safety, and improving work efficiency. .

Hereinafter, one embodiment of the present invention will be explained according to the drawings. Fig. 1 is a schematic side view of a tiller according to the present invention, and in the figure, 1 indicates a crankshaft (not shown) provided in the front and back direction. A vertical diesel engine, 2 is a clutch case installed at the rear of the engine 1, and this clutch case 2
is connected to the rear part of the engine flock that constitutes the engine 1 via a coupling bracket 2a.

3 is a transmission case installed behind the clutch case 2, which contains a large number of gears, etc.
The mission case 3, the clutch case 2, and the engine 1 constitute the entire aircraft body.

Further, 4 is a fluid transmission (H8T) device, 5 is a U-shaped chassis installed above the transmission case 3, and 6 is installed rearwardly on the chassis 5 via a nozzle frame 6a. The engine 1 is covered with an upper bonnet 8 and a lower bonnet 9, and an axle 1 is provided below the transmission case 3.
0, and a rear hitch 12 is attached to the rear of the transmission case 3.
The rotary transmission case 13 is attached through the PTO shaft and the rotary input shaft 1 provided in the mission case 3.
4 (see FIG. 3) to drive the rotary tilling shaft 15 button and the rotary tilling pawl 16, and furthermore, the base end of the nodle 6 is attached to the chassis 5. Fix the end and place the tank 1 on the chassis 5.
7 and an oil tank 18 are placed thereon, and furthermore, fenders 19 are attached to both sides of the chassis 5.

Next, referring to FIGS. 2 to 4, the configuration of the main parts of the present invention will be specifically explained. A substantially triangular protrusion 20 is formed on the rotary transmission case 13, and a through hole 20 is formed through the protrusion 20 to allow the rotation fulcrum shaft 21 to pass through the protrusion 20.
It forms a.

Then, the tilling cover 2 is attached to the protrusion 20 via the shaft 21.
2. Swinging unit B including tilling frame 23 button, tail wheel device 24, etc.
It is a concatenation of

That is, through-holes 23a, 23a are formed in the front part of the tilling frame 23 through which the rotation fulcrum shaft 21 passes, and after the front part of the tilling frame 23 is placed over the protrusion 20, each of the through-holes is The rotation fulcrum shaft 21 is inserted into 20a and 23a, and the locking pin 25 is fitted to the protrusion of the shaft 21, so that the swinging portion B can swing relative to the rotary transmission case 13. It is composed of

A guide plate 27 having a rectangular guide hole 26 is fixed to the left side of the rotary transmission case 13.

Here, the guide hole 26 is U-shaped and includes a curvature portion 26a whose center of curvature is the rotation fulcrum shaft 21, and locking portions 26b and 26c communicating with the curvature portion 26a.

Furthermore, a long hole 28 is bored in the front portion of the guide plate 27 for passing a tilling clutch lever, which will be described later.

On the other hand, an L half plate 29 is erected and fixed on the main surface of the tilling cover 22 in the swinging part B, and one piece of this L half plate 29 has elongated holes corresponding to the locking parts 26 b and 26 c. An L-shaped operating rod 30 is movably supported on the other piece of the iron plate 29, and one end of the rod 30 is inserted into the matching hole 29a.

26b and protrudes toward the inside of the guide plate 2T at the tip thereof, and the other end of the rod 30 is inserted into the L half plate 29.
The other side is made to protrude outward, and the operating wire 31 is attached to this protrusion.
An operating lever (not shown) is connected via the .

Here, a spring 33 is stretched between the ring 32 attached to the rod 30 and the half plate 29.

In addition, the operating rod 30 is normally pressed and located at one end of the guide hole 26 to restrict the swinging of the swinging portion B relative to the rotary transmission case 13.

Further, a support shaft 34 is protruded and fixed to the left side of the rear hitch 12 in the housing, and the cylindrical portion 35a of the tilling clutch lever 35 is fitted onto this support shaft 34, so that the first rule of the lever 35 is inserted into the elongated hole. 28 into the guide plate 21, and the rod 3
While the lever 35 is configured to rotate around the support shaft 34 when the lever 35 moves, a tilling clutch wire 36 is connected to the other side of the lever 35.

It was a cabinet. A pin 3 is provided on the other side of the lever 35 and the rear hitch 12.
A spring 39 is stretched between the pins 37 and 38 and urges the lever 35 to the tilling clutch on position.

In each of the above figures, the button 40 indicates a stopper, and the numeral 41 indicates a gauge wheel.

The present invention is constructed as described above, and its operation will be explained below.

First, to describe the operation under normal conditions, during tilling work, the operating rod 30 is biased by the spring force of the spring 33, and the locking portion 26 is moved from one end of the guide hole 26.
Since it is located at the front end of the rotary transmission case 13
The swinging of the swinging portion B relative to the rotation angle is restricted.

Further, the tilling clutch lever 35 is set to the tilling clutch-on position by a spring 39.

Therefore, the rotational force transmitted from the PTO shaft to the power transmission element in the rotary transmission case 13 via the rotary input shaft 14 is transmitted to the rotary tilling shaft 15 via each gear in the case 13.

Therefore, the rotary tilling claws 16 rotate in the direction of arrow a in FIG. 1 to perform tilling work.

Next, let's talk about the effect when rotating the tiller.
First, the operator pulls the operating rod 30 in the direction of the arrow in FIG. After releasing the chain rule of part B, if the handle 6 is lifted in the direction of arrow C in FIG. Fold and swing forward at the center.

Therefore, the lifting load is reduced.

At this time, the operating rod 30 moves upward along the curved portion 26a of the guide hole 26, rotates the tilling clutch lever 35 in the same direction against the spring force of the spring 39, and rotates the tilling clutch lever 35 in the same direction. 35 to the tilling clutch off position, and the rotation of the rotary tilling shaft 15 and the rotary tilling claw 16 is stopped.

Next, when the operating rod 30 is moved from the other end of the guide hole 26 to the front end of the locking hole 26c via the operating lever (not shown) and the operating wire 31, the state shown in FIG. Since the clutch-off state and the state in which the swinging portion B swings forward can be maintained, the operator can safely swing the tiller under this state.

It should be noted that it is clear that when performing the tilling operation again after the turning operation is completed, it is better to perform the operation in the opposite direction to that described above.

As described in detail above, the present invention provides a power tiller in which a rotary working machine T is connected to the rear of the tiller body A.
Swinging parts B such as the tilling cover 22 button and the tail wheel device 24 are connected to the rotary transmission case 13 integrally connected to the side via the rotation fulcrum shaft 21, and the transmission case 13 has a U-shape. A guide plate 27 having a guide hole 26 of
3, and when the rod 30 is operated, the rotary transmission case 13
Since it is configured to release the restriction on the swinging part B and to stop the rotation of the rotary tilling shaft 15 by moving the rod 30, when the tiller is turned and the handle is lifted upward by pressing the button. Since the swinging part B can be swung forward and the center of gravity can be moved forward, the lifting load can be reduced, and the rotary movement of the rotary tilling claws 16 to 16 can be stopped to ensure worker safety. Because you can
Overall, it is possible to improve tillage efficiency.

[Brief explanation of drawings]

Fig. 1 is a schematic side view of the cultivator according to the present invention, Fig. 2 is a partially enlarged side view of the main parts, Fig. 3 is an enlarged flat view showing a part of Fig. 2 in cross section, and Fig. 4 The figure is an exploded perspective view of the main parts, and FIG. 5 is a side view for explaining the operation of the present invention. A... Main body of tiller, B... Swinging part 1.
γ...Rotary actuator, 13...U-
Taly transmission case, 15...Rotary tilling shaft, 2
2... "- Tari tilling cover, 24... Tail wheel device, 26... Guide hole.

Claims (1)

[Scope of utility model registration request] A tiller is constructed by connecting a rotary work machine to the rear of the tiller body, and the tiller cover and tailwheel device are oscillated through a rotation fulcrum shaft to a rotary transmission case integrally connected to the tiller body. A guide plate having a U-shaped guide hole is provided in the Y direction of the transmission case, and an operating rod, which is located at one end of the guide hole in the normal state, is provided on the swinging part side. The structure is configured to restrict the swinging of the swinging part with respect to the rotary transmission case, and when the rond is operated, the restriction of the oscillation part with respect to the rotary transmission case is released, and the rotation of the rotary tilling shaft is caused by the movement of the rond. A tiller characterized in that it is configured to stop.