JPS6010325Y2 - Cover device for soil tiller - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a cover device for a tiller and crusher, which prevents soil from adhering to the cover device.

Generally, when working on a tillage frame using a rotary or the like, soil often adheres to the inside of the cover body that covers the upper part of the tilling and crushing claws.

As a result, there are problems such as impeding the movement of the soil and impairing smooth work, increasing the working resistance of the tilling and crushing soil claws, and furthermore, causing a large amount of wear and tear on the tilling and crushing soil claws due to the soil that has adhered. ing.

Therefore, in the past, cloth or the like was directly attached to the inside of the cover body, but these methods did not have satisfactory effectiveness.

The present invention was devised in view of these points, and consists of elastically attaching a flexible cover member to the inside of the cover body with a predetermined gap, and removing pressure generated by earth pressure against the flexible cover member. Provided is a cover device for a tiller that is capable of preventing soil from accumulating due to the wave-like movement of a visible cover member, and also solving the conventional problems caused by soil adhesion. It is intended to.

Next, an embodiment of the present invention shown in the accompanying drawings will be described.

In the figure, reference numeral 1 denotes a machine frame. A transmission 3 having an input shaft 2 is fixed to the center of the machine frame 1, and a connecting frame 4 projects forward from the machine frame 1.

In addition, a chain case 5 and a bracket (not shown) are installed on both sides of the machine frame 1, and tillage crushing claws 6 are installed radially in the axial direction at the lower part between the chain case 5 and the bracket. Tillage crushing mechanism 7 consisting of a group of crushing claws
is rotatably mounted on a shaft, and the drive shaft 8 of the tilling and crushing mechanism 7 connects to the mission via a drive mechanism (not shown) consisting of the output shaft of the mission 3 and a chain provided in the chain case 5. It is designed to be driven in conjunction with 3.

Further, 9 is a cover device, and this cover device 9 is located above the tilling and crushing mechanism 7 and is horizontally fixed to the machine frame 1.

Further, the front end of a flat plate 10 is connected to both rear sides of the cover device 9 via a hinge 11 so as to be able to move up and down, and one end of a chain 12 is locked to the rear end of the flat plate 10. The other end of the chain 12 is attached to a support frame 13 projecting from the machine frame 1 so that its length can be adjusted.

Next, the cover device 9 includes a cover main body 14 made of steel or the like and having a size that covers the upper part of the tilling and crushing mechanism 7, and a flexible cover member 15 made of a rubber plate or the like.
It is composed of.

A plurality of insertion holes 16 are provided protruding from the front end, rear end, and midway of the cover main body 14, respectively.

Further, a plurality of insertion holes 17 are formed at the front end, rear end, and midway of the flexible cover member 15 in correspondence with the insertion holes 16 of the cover main body 14, respectively.

A flexible cover member 15 is disposed inside the cover main body 14, and the insertion hole 17 of the flexible cover member 15 is connected to the insertion hole 16 of the cover main body 14 at the mutual rear end portions. A bolt 18 is inserted through the bolt 18, and a nut 19 is fastened to the protruding end of the bolt 18 to secure them in close proximity to each other.

Further, a bolt 18 is inserted into the insertion hole 16 from the insertion hole 17 of the cover body 14 and the flexible cover member 15 via the coil spring 20, and the protrusion of the bolt 18 A nut 19 is tightened to the end at a predetermined depth.

Further, the bolt 18 is inserted through the communication hole 17 formed in the middle of the flexible cover member 15 into the insertion hole 16 of the cover body 14 via the coil spring 20, and the protruding end of the bolt 18 is inserted into the through hole 16 of the cover body 14. Screw the nut 19 to a predetermined depth.

In this case, the coil spring 20 interposed at the front end is
A coil spring with comparatively weaker strength than the coil spring 20 interposed in the middle is used.

As a result, the flexible cover member 15 is elastically supported by the coil spring 20 on the front side excluding the rear end so as to be movable up and down.
5 and the cover main body 14, a predetermined gap 21 is formed in which the front part in the traveling direction is gradually larger than the rear part, that is, the gap is gradually larger from the rear end to the front end.

In this structure, the connecting frame 4 is connected to a towing vehicle such as a tractor, and the input shaft 2 is connected to the output shaft of the towing vehicle.

Then, while towing the work equipment, the drive shaft 8 is interlocked and driven by the drive of the output shaft via the interlocking mechanism in the input shaft 2, transmission 3, and chain case 5. The tilling and crushing mechanism 7 is driven in conjunction with each other, and the tilled soil is successively tilled and crushed as the tillage and crushing mechanism 7 rotates.

In this case, the tillage and crushing mechanism 7 removes the tilled soil from the cover device 9.
When the flexible cover member 15 is forcefully thrown, the flexible cover member 15 guides the bolt 18 due to the soil of the cultivated soil, and due to its flexibility and the expansion and contraction of the coil spring 20, the flexible cover member 15 As the tilling and crushing soil claws 6 of the tillage and crushing mechanism 7 are moved up and down, the entire body exhibits a wave-like motion, and therefore, the tilled soil is prevented from sticking to the flexible cover member 15. rotates smoothly without contacting the

According to the present invention, a flexible cover member is disposed inside the cover main body with a predetermined gap in which the front part in the traveling direction is larger than the rear part, and the flexible cover member and the above-mentioned A weak spring is interposed between the cover body and the front part in the direction of movement to hold it, so that when cultivated soil is released by the tilling and crushing mechanism against the visible cover part, the Due to the soil pressure of the tilled soil, the flexible cover member is moved up and down against the spring, and the entire flexible cover member exhibits a wave-like movement. Therefore, even if the tilled soil adheres to the flexible cover member, the wave-like movement causes the flexible cover member to move up and down against the spring. It can be removed reliably and smoothly, it can reliably prevent cultivated soil from accumulating in it, it is easy to move cultivated soil, and there is little resistance, so it has good workability and is durable. There is no fear that the tilling and crushing claws of the tilling and crushing mechanism will be worn out and damaged by the accumulated cultivated soil, and since the structure is simple, it is easy to manufacture.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a side view of a tilling and crushing machine, and Fig. 2 is a sectional view of the same cover device. 7... Tillage and crushing mechanism, 14... Cover body, 15... Flexible cover member, 20...
...Spring, 21...Gap.

Claims (1)

[Scope of utility model registration request] A cover main body formed in a size that covers the upper part of the tilling and crushing soil mechanism, a flexible cover member disposed inside the cover main body with a predetermined gap, and a flexible cover member that is compatible with the cover main body. A spring is provided between the cover body and the flexible cover member to maintain a gap between the cover body and the flexible cover member, and the gap between the cover body and the flexible cover member is A cover device for a tiller and crusher, characterized in that the front part in the direction of travel is made larger than the rear part, and the strength of the spring that maintains this gap is set to be weak at the front part in the direction of travel and relatively strong at the rear part.