JPS633Y2 - - Google Patents

Description

[Detailed description of the invention] In this invention, the proximal end of the forward-protruding rotating arm is fixed to the front side of the rotary chain case, and the tip of the rotating arm is detachably engaged with a claw provided on the engagement device. The present invention relates to a mudguard cover structure for a rotary arm of a power tiller that is made to fit together.

In the case of a tiller equipped with a rotating mechanism, plowing work using a rotary is not performed with the rotating arm engaged with the claw. In addition, the rotating arm is moved forward and disengaged from the claw, and the turning is performed, but during this plowing work or rotating, the tilled soil is scattered, and this scatters at the base end of the rotating arm. It may stay on the top surface. If the amount of mud that remains is small, it can be treated as just dirt, but
When it gradually accumulates and solidifies, this mud prevents the moving arm from moving forward and interferes with the detachment operation, making it impossible to perform the moving operation smoothly.

In this project, we will prevent mud from staying at the base end of the revolving arm due to the scattering of cultivated soil, and by using an elastic cover for the mud guard, we will prevent mud from staying at the base end of the revolving arm. This is intended to prevent the movement of the rotary arm from interfering with the forward motion when it is detached even if it remains.

The present invention will be explained below based on embodiments shown in the drawings.

A is a tiller in which a rotary 2 is connected to the rear of the main machine 1, 3 is a running wheel, 4 is an engine, 5 is an operating handle, 6 is a rotary claw, 7 is a rotary cover, and 8 is a tail wheel.

Reference numeral 9 denotes a rotating arm that protrudes forward from the front of the rotary 2, and its base end is connected to the rotary chain case 1.
A pair of forward arms 9', 9' fixed to the front side of the 0 are provided facing each other, and a reinforcing plate 11 is installed above the base end between the opposing arms, and a locking plate is provided at the distal end. pin 12
is pivoted.

Reference numeral 13 denotes a connecting frame that connects the machine 1 and the rotary 2, with the side plates 13' and 13' facing each other, the front side of which is removably attached to a hitch 14 provided at the rear of the machine 1, and the other side plate is attached to the rear of the machine 1. The upper part of the side is pivoted 15 to the front part of the rotary 2, and the lower part is provided with an engagement device 16 on the inner surface of one side plate 13'.
A pawl 17 protrudes from a case 16' of the engaging device 16, and a locking pin 12 provided at the tip of the rotating arm 9 is removably engaged with the pawl 17. In addition, what is indicated by 18 in the figure is the side plate 13', 1.
It is a protection plate for the engagement device 16 installed between 3′,
It also functions as a reinforcing plate.

The gist of the present invention is that, in this configuration, the corner space S between the base end upper surface 9a of the rotary arm 9 and the front side surface 10a of the rotary chain case 10 is filled with the mudguard cover 19. .

That is, the mudguard cover 19 is made of elastic rubber and is formed into a wedge shape that can be fitted into the corner space S. The front side surface 19a is formed to face the rear side surface of the protective plate 18 when the engagement with the rotating arm 9 is released, and the mud guard cover 19 has a size and shape suitable for such conditions.

Therefore, during plowing work, the locking pin 12 provided at the tip of the rotating arm 9 is engaged with the claw 17, and at this time, the presence of the mudguard cover 19 is essential. Therefore, the corner space S between the base end of the rotating arm 9 and the chain case 10 is filled, and mud scattered by the plowing operation does not remain in this space S. In addition, some mud may adhere to the front side surface 19a of the mudguard cover 19 during plowing work or when the rotating arm is moved. When moving the rotary arm 9 forward, there is a risk that the adhered mud may be interposed between the cover 19 and the protection plate 18 and impede the forward movement of the rotating arm 9.
At this time, in this case, since the mud guard cover 19 is made of an elastic cover, the presence of adhered mud is absorbed by its elasticity, and the forward movement of the rotating arm 9 is not hindered in any way. .

Moreover, the front side surface 19 of the mudguard cover 19
a is formed to face the rear side surface of the protection plate 18, and is configured so that the front side surface 19a faces and approaches the rear side surface of the protection plate 18 when the engagement with the rotating arm 9 is released. Another problem arises in that the forward movement of the rotating arm 9, which moves in the opposite direction relative to the protection plate, is hindered by interference between the rear side of the protection plate 18 and the mudguard cover 19. This allows for smooth and reliable turning work, etc., without any problems.

Furthermore, since the front side surface 19a of the mudguard cover is formed to face the rear side surface of the protection plate 18, the pressing action of the front side surface 19a of the mudguard cover is evenly applied through the adhered mud. The cover 19 is sufficiently compressed and deformed, thus ensuring the above-described forward movement of the transition arm 9.

Since the present invention is constructed as described above, the proximal corner of the revolving arm, where mud scattered during plowing operations tends to stay, is buried by the mud guard cover, thereby preventing the mud from accumulating. There is no risk of interfering with the forward movement of the rotating arm, and even if mud were to adhere to the cover, the elasticity of the cover would absorb the existence of this adhered soil, so this adhered soil would prevent the rotating arm from moving forward. The movement is not restricted, and there is an effect that the movement of the rotating arm can be made smooth and the tiller can be rotated reliably.

Furthermore, since the front side of the mudguard cover is formed to face the rear side of the engagement device, the pressing effect on the front side of the mudguard cover through the adhered mud is evened out, and the cover is It is sufficiently compressed and deformed, and therefore has the effect of ensuring the above-mentioned forward movement of the rotating arm.

[Brief explanation of the drawing]

Fig. 1 is an overall side view showing the tiller according to the embodiment of the present invention, Fig. 2 is a side view with the rotating arm engaged, and Fig. 3 is a side view with the rotating arm detached. FIG. 4 is a plan view of the rotating arm. A: Tiller, 1: This machine, 2: Rotary, 9: Rotating arm, 9a: Top surface of base end, 10: Rotary chain case, 10a: Front side, 19: Mudguard cover, S: Corner space .

Claims (1)

[Scope of utility model registration request] Connection frame 13 that connects this machine 1 and rotary 2
At the top of the rotary chain case 1 of the rotary 2,
0 is pivotally attached to the upper part of the case 10, and the tip of the rotating arm 9 protruding forward from the front side of the lower part of the case 10 is configured to be detachably engaged with the engagement device 16 provided at the lower part of the connecting frame 13. In the rotating arm of the machine, a wedge-shaped mudguard having elasticity is provided in a corner space S formed between the base end upper surface 9a of the rotating arm 9 and the front side surface of the rotary chain case 10. In addition to filling the cover 19, the front side surface 19a of the cover 19 is formed to face the rear side surface of the engagement device 16, so that the front side surface 19a is formed to face the engagement device 16 when disengaging from the rotating arm 9. A mudguard cover structure configured to face and be close to the rear side.