JPS5930642Y2 - Rear cover lifting device - Google Patents

Description

[Detailed description of the invention] The present invention relates to a rear cover suspension device in a low-crop cultivating device, and an object of the present invention is to alleviate the impact force when the rear cover is lowered, and to prevent damage, deformation, etc. to the rear cover and its suspension mechanism. With the goal.

In a rotary tiller, the rear cover is pivotally attached to the rear end of the front cover so that it can move up and down, and the rear cover is suspended via a suspension rope. When traveling, the rear cover moves up and down violently, and when it descends, the impact force may damage or deform the rear cover and its suspension mechanism.

The present invention solves these conventional problems, and
The feature is that the rear cover of the rotary cover that covers the rotary tiller is pivoted so that it can move up and down,
In a rotary cultivating device in which a connecting frame provided on the rear cover and a rotary body supporting a rotary tilling section are suspended by a hanging rope, the hanging rope is connected to a chain connected to the rotary body side and a connecting frame side. The buffer mechanism includes a rod, a cylindrical body fitted onto the rod, and a compression spring interposed between the rod and the cylindrical body so as to reduce the impact in the axial direction. , one of the rod and the cylindrical body is connected to a chain, and the other to a connecting frame.

Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments.
In the figure, 1 is a rotary aircraft, support arm 2,
It consists of a chain case 3, a top mast 4, an IJ link 5, etc. as a structure, and is mounted to the rear of the tractor body via a three-point linkage mechanism 6 so as to be able to rise and fall freely.

Reference numeral 7 denotes a rotary tilling section, which includes a claw shaft rotatably supported on the lower end of the rotary body 1, and a large number of tilling claws 8 implanted in the claw shaft.

Reference numeral 9 denotes a rotary cover that covers the rotary tiller 7, which includes a front cover 10 attached to the rotary body 1, and a rear cover pivoted to the rear end of the front cover 10 by a support shaft 11 so as to be movable up and down. 12, and a pair of left and right side covers 13.

Reference numeral 14 denotes a suspension cable for suspending the rear cover 12, one end of which is adjustably connected to the rear end of the top mast 4 via a connecting pin 15, and the other end connected to the rear cover via a buffer mechanism 16. It is connected to the 12 side.

That is, on the rear cover 12 side, there is one front column 17 placed in the center and two rear columns 1 placed on both sides of the rear side.
A connecting frame 20 formed by connecting the upper end of 8 with a connecting pin 19
is provided, and a suspension rope 14 is connected to this connection frame 20 via a buffer mechanism 16.

As shown in FIG. 2, the buffer mechanism 16 includes an outer cylinder 21 connected to a connecting pin 19, a rod 23 slidably inserted from the spring receiver 22 side at the tip thereof, and a spring receiver fitted externally on the rod 23. A coil spring 25 is interposed between 22 and 24, and the rod 23 is connected to the chain 2 of the suspension line 14.
6.

Next, the action will be explained.

The suspension rope 14 is made of a chain 26, and by appropriately setting the connection position with respect to the connection pin 15, the rear cover 1
2 can be adjusted up and down around the support shaft 11, so after setting the height of the rear cover 12 appropriately, the work of cultivating the field can be started.

In this case, if there are stones etc. scattered in the field, the stones etc. are blown away by the tilling claws 8 and collide with the rear cover 12,
Each time, the rear cover 12 moves up and down shockingly.

When the rear cover 12 descends, an abnormal tension is instantaneously applied to the suspension rope 14, but at this time the spring 25 is compressed and deformed, which can alleviate the impact and prevent damage to various parts. This can prevent deformation or loosening of bolts.

The same applies to the vertical movement of the rear cover 12 when traveling on a road such as a farm road.

As described above, in this invention, when suspending the rear cover with the suspension rope, a spring is interposed in the suspension rope.
The spring can reduce the impact force when the rear cover moves up and down, thereby preventing damage or deformation of the rear cover or connecting parts, etc., and using thin and thin materials for the constituent parts of each part. This makes it possible to save on materials.

In addition, the suspension rope is equipped with a buffer mechanism including a spring and a chain,
The shock absorbing mechanism is connected to the connecting frame of the rear cover, and the chain is connected to the rotary body, so when lifting the rear cover and replacing the tilling claws of the rotary tiller, attach part of the chain to an appropriate location on the rotary body. The rear cover can be held in a raised position by hanging it on the rear cover, making replacement work easier.

Moreover, the shock absorbing mechanism is located on the side of the connecting frame of the rear cover, but since it is comprised of a rod, a cylinder, and a spring, and the cylinder covers the spring, mud, etc. may adhere to the shock absorbing mechanism, preventing it from functioning as a buffer. Not at all.

Also, since the spring is a compression spring, it can prevent breakage due to strong impact force.

[Brief explanation of the drawing]

FIG. 1 is a side view showing an embodiment of the present invention, and FIG. 2 is an enlarged sectional view of the main parts thereof. 9... Rotary cover, 10... Front cover 12... Rear cover, 14...
Hanging rope, 16...Buffer mechanism, 20...
Consolidation overview

Claims (1)

[Scope of utility model registration request] The rear cover 12 of the rotary cover 9 that covers the rotary tiller 7 is pivotably supported vertically, and the connecting frame 20 provided on the rear cover 12 and the rotary body 1 that supports the rotary tiller 7 are connected to the suspension cable 14. In the rotary tilling device suspended by a rotary tiller, the suspension cable 14 includes a chain 26 connected to the rotary machine body 1 side and a buffer mechanism 16 connected to the connecting frame 20 side, and the buffer mechanism 16 includes a rod 23 and a chain 26 connected to the rotary machine body 1 side. A compression spring 25 is interposed between the rod 23 and the cylinder 21 to reduce the impact in the axial direction. A rear cover suspension device characterized in that one side is connected to a chain 26 and the other side is connected to a connecting frame 20.