JPH0429686Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) The present invention relates to a rotary tiller with a rake that can turn plowed soil into a large soil mass in the lower layer of fine soil.

(Prior art) A rotary rotary with a rake in which a large number of rakes made of rods (including round rods and plate-shaped rods; the same shall apply hereinafter) are arranged in rows in the tilling width direction inside the rear cover of the tilling cover that covers the rotary tilling section. Tillers, for example, 1984 10
This is disclosed in the special feature on mechanized agriculture, ``Tillage Science for Soil Preparation,'' published in May.

Although the mounting structure of the rake is not specified in this prior art, the rake is formed by arranging a large number of bars in parallel on a strip-shaped mounting frame, and the mounting frame is bolted to the inner surface of the main cover. It is attached via fasteners such as

(Problems to be Solved by the Invention) In the prior art, when attaching or detaching the rake, the rotary tiller must be raised and the bolts must be tightened from below, and the tiller claws and rear cover must be tightened. This becomes an obstacle and makes the work difficult.
In addition, soil may adhere to the bolts, making it difficult to tighten and loosen them.

(Means for Solving the Problems) The present invention solves the problems of the prior art by making it possible to engage and detach from the main cover 7 and the side covers 11 by moving the mounting frame 20 in the left and right direction. This problem can be solved by configuring the mounting frame 20 to be attached and detached from the side of the tilling section 5 by attaching and detaching it to the side cover 11.

That is, the specific structure of the problem-solving means in the direction is characterized by the cultivating section 5 being the main cover 7,
A rake covered with a rear cover 9 pivotally supported by the left and right side covers 11 and the main cover 7, and having a mounting frame 20 between the tilling part 5 and the rear cover 9 and a plurality of rods 21 fixed thereto. 16, the left and right side covers 1
1 is removably attached to the main cover 7, and locking portions 22 are provided at both left and right ends of the mounting frame 20 and are removable by relative movement in the left and right direction with respect to the side cover 11, and An engaged portion 2 provided on the main cover 7 is located midway in the left and right direction of the mounting frame 20.
8 is provided with an engaging portion 24 which is removable by movement in the left-right direction and engages when the locking portion 22 is locked.

(Function) Remove one side cover 11, place the rake 16 between the tilling part 5 and the rear cover 9, and place the rake 16 on the mounting frame 20.
is moved forward and the engaging portion 24 thereof is inserted into the engaged portion 28 of the main cover 7. From that state, mounting frame 2
0 to the other side cover 11 side, the engaging part 24 is engaged with the engaged part 28, and the locking part 22 at one end is locked with the other side cover 11, and the one side When the cover 11 is attached to the main cover 7, the side cover 11 is engaged with the engagement portion 22 at the other end of the attachment frame 20, and the rake 16 is immovably attached to the tilling cover 6.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

In the first embodiment shown in FIGS. 1 to 4, a rotary tiller 1 with a rake is connected to a tractor (not shown) via a link mechanism 2 so as to be movable up and down.

A claw shaft that rotates around a horizontal horizontal axis is installed on the machine frame 3, and a large number of tilling claws 4 capable of up-cutting and down-cutting are attached to the claw shaft, and a tilling part 5 is installed.
is configured.

The tiller 5 receives rotational power from the PTO shaft of the tractor via a universal joint shaft or the like, and is rotated in either the direction shown by arrow A or the direction opposite to arrow A.

Further, the tilling section 5 is covered with a tilling cover 6, and the tilling cover 6 is pivoted to a main cover 7 attached to the machine frame 3 and a rear part of the main cover 7 via a hinge 8 so as to be vertically movable. The rear cover 9 consists of a rear cover 9, left and right front and rear covers 10, 11, etc.
A flat portion 9A formed on the rear edge of the bullet is biased in the direction of ground contact via a bullet lowering mechanism 12. In addition, the strength of the bullet lowering force of the bullet lowering mechanism 12 can be adjusted freely.

Furthermore, a gauge wheel 13 for setting the working depth of the tiller 5 is attached to the machine frame 3 via a support rod 14, and by connecting the support rod 14 and the machine frame 3 with an adjusting means 15, the working depth can be adjusted. The height is said to be adjustable.

The tilling cover 6 has a main cover 7 fixed to the machine frame 3, and left and right rear covers 11 are respectively fixed to the main cover 7 via bolts 17 and also fixed to the machine frame 3. The cover 11 is designed to be easily attached and detached.

A rake 16 is arranged inside the tilling cover 6, that is, between the tilling cover 9 and the tilling part 5. This rake 16 has brackets 19 at both ends of the strip plate 18.
It has a mounting frame 20 welded to it, and a large number of parallel bars 21 whose upper ends are welded to the strip plate 18,
The rod 21 is formed of a tough metal round rod or plate-shaped material, and has an arc shape.

One or more pins 22 protruding outward are welded or screwed to the left and right brackets 19 of the mounting frame 20, and pin holes 23 are bored in the left and right covers 11 in correspondence with the pins 22, The pin 22 serves as a locking portion that is locked in the front-rear, up-down direction by being inserted into the pin hole 23 .

Further, a plurality of hooks 24 forming an engaging portion are provided midway in the left-right direction (width direction) of the mounting frame 20. This hook 24 is formed by polymerizing and welding an L-shaped plate material to the strip plate 18.

A mounting member 25 is attached to the lower surface side of the main cover 7 via a skeleton member 26, and a hook 28 in which an insertion hole 27 for the hook 24 is formed is welded to this mounting member 25. This hook 28 can prevent the mounting frame 20 from moving back and forth and in the vertical direction by moving the inserted hook 24 in the left direction B in FIG. They each form a joint.

The locking structure between the pin 22 and the pin hole 23 and the engagement structure between the hook 24 and the hook 28 may be replaced with other known structures as appropriate. The protrusion 31 shown in FIG. 2 is made by bending a band plate into a dogleg shape, and is welded to the inner surface of the rear cover 9 for a long time in the width direction, and this protrusion 31 reinforces the rear cover 9. In addition, a gap is always formed even when the rake 16 is closest to the rake 16, and by forming this gap, the soil clod separating action of the rake 16 is maintained.

To attach the rake 16 to the rotary tiller 1, one (right) side cover 11 is removed and the rake 16 is placed between the rear cover 9 and the tiller 5. At this time, it is preferable to lift the rear cover 9, but the work can be done without lifting it.

When the hook 24 of the rake 16 is inserted into the insertion hole 27 of the hook 28, the band plate 18 hits the hook 28 and is set in the forward and upward position, and in this state the pin 22 protruding from the bracket 19 on one side is fixed. It faces the pin hole 23 of the side cover 11 on the side.

When the rake 16 is moved to the left from this state, the hook 24 engages with the hook 28 at the same time as the pin 22 enters the pin hole 23, preventing movement in all directions except the right direction, and then Then, when the right side cover 11 is fitted onto the pin 22 of the right bracket 19 from the right side and fixed to the main cover 7, the rake 1
6 is also prevented from moving in the right direction and is fixed to the tilling cover 6.

In the second embodiment shown in FIG.
are welded to the outer surface of the mounting member 25, and the hook 24 is integrally formed with the strip plate 18 or welded to the end face, and the front and upward position of the strip plate 18 is regulated by a rod welded onto the strip plate 18. The end of the material 21 is the hook 2
This is done by hitting 8.

The bar 21 has a winding portion 29 formed near the upper end,
This winding portion 29 increases elasticity, and
Even if the rear cover 9 approaches, the minimum distance required for soil separation is maintained.

A bracket 19 of the mounting frame 20 projects upward from the end of the strip 18. In this second embodiment, the rake 16 can be easily attached and detached as in the first embodiment, and soil does not adhere to the engaged portion 28, so that the engaging portion 24 can be easily engaged and detached.

(Effect of the invention) According to the invention detailed above, the left and right covers 1
1 is removably attached to the main cover 7, and locking portions 22 are provided at both left and right ends of the mounting frame 20 of the rake 16, which are removable by movement in the left-right direction relative to the side cover 11. And mounting frame 20
An engaging portion 24 is disposed halfway in the left-right direction and is removable from an engaged portion 28 provided on the main cover 7 by moving in the left-right direction, and is engaged when the locking portion 22 is locked. is provided, so by attaching and detaching one side cover 11 and moving the rake 16 in the left and right direction,
The rake 16 can be attached and detached, and the attachment and detachment work can be done from the side of the tilling section 5, eliminating the need to work from the bottom of the tilling section 5 as in the prior art, and also eliminating the need for tightening and loosening bolts with soil attached. Since there is no rake, the task of attaching and detaching the rake becomes extremely simple and easy.

[Brief explanation of the drawing]

Figures 1 to 4 show an embodiment of the present invention; Figure 1 is an exploded perspective view of the main parts, Figure 2 is a sectional side view of the main parts, and Figure 3 is a partially sectional plan view of the main parts. , FIG. 4 is an overall side view, and FIG. 5 is a sectional side view of main parts showing the second embodiment. 1... Rotary tiller, 5... Tilling section, 6...
Cultivation cover, 7... Main cover, 9... Rear cover, 11... Rear cover, 16... Rake, 20
... Attachment frame, 21 ... Bar material, 22 ... Pin (locking part), 24 ... Hook (engaging part), 28 ... Hanging tool (engaged part).

Claims (1)

[Scope of claim for utility model registration] The tilling section 5 is covered by a main cover 7 and its left and right side covers 1.
1 and a rear cover 9 pivotally supported on the main cover 7, and a mounting frame 20 is installed between the tilling section 5 and the rear cover 9.
In the rotary cultivator with a rake, in which a rake 16 is arranged having a rake 16 and a plurality of rods 21 fixed thereto, at least one of the left and right side covers 11 is removable from the main cover 7, and the mounting frame 20 is attached to the main cover 7.
A locking portion 22 is provided at both left and right ends of the main cover 7, and a locking portion 22 is provided at the left and right ends of the main cover 7. A rotary tiller with a rake, characterized in that an engaging part 24 is provided at 28, which can be engaged and detached by moving in the left and right direction, and which engages when the above-mentioned engaging part 22 is engaged.