JPS5833848Y2 - excavator - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an excavator, and particularly to an excavator equipped with a stone protection mechanism.

Usually, underground crops such as potatoes are dug up along with the soil and gravel, and the soil and gravel are separated on a conveyor body, and only the harvested product is exposed to the surface and released, or stored in a container or the like.

In this case, not only the lead metal but also the front end of the conveyor body has to turn around in the soil, so the downward return section leading to the turn-around part of the conveyor body collects dirt, gravel, stones, etc. Debris, stones, etc. that were separated from the turned-up upper conveyance section and fell to the lower return section are transported as they are and headed for the turn-around section, and therefore, the soil Gravels and stones are conveyed between the conveyor body and the guide rollers that rotate around the conveyor body, and there is a risk that the rotation of the guide rollers may be obstructed or stopped by the gravels and stones.

This is particularly true when the tension of the conveyor body has loosened due to wear or the like.

The present invention has been developed in view of these points, and includes first and second exclusion bodies located inside the downward return portion of the conveyor body at the lower rear side of the guide rollers that turn around the conveyor body. The first and second removing bodies are installed in parallel to remove debris and stones, thereby preventing debris and stones from being conveyed to the guide rollers, and preventing the conveyor body from being affected by the tension of the conveyor body. To provide an excavator which can always smoothly accompany a conveyor body.

Next, one embodiment of the present invention will be described with reference to the attached drawing 4.

Reference numeral 1 denotes a side frame serving as a machine frame, and this side frame 1 is disposed facing each other on both sides with a predetermined gap.

A mounting frame 2 serving as a machine frame is erected at the top of the front end of the side frames 1 on both sides, and a transmission 4 having an input shaft 3 connected to the output shaft of the tractor is fixed between the mounting frames 2 on both sides. , the connecting frame 5 connected to the tractor is fixed,
Further, a supporting frame 6 serving as a machine frame is connected between this connecting frame 5 and the side frames 1 on both sides.

Further, a tip 7 as an excavation body is protruded from the lower front end of the side frame 1 on both sides, and a conveyor body 8 is connected to the rear end of the tip 7 so as to be inclined rearward and upper.

This conveyor body 8 is located at the rear end of the tip 7 and has a horizontal shaft 9 mounted between the side frames 1 on both sides, and guide rollers 10 are rotatably mounted on both sides of the horizontal shaft 9. Further, a drive shaft 11 is rotatably mounted horizontally at the rear upper part between the side frames 1 on both sides, sprockets 12 as drive wheels are fixed to both sides of the drive shaft 11, and guide rollers on both sides of the front and back 10
An endless chain 15 is suspended between the sprocket 12 and the sprocket 12, and the endless chain 15 is constructed by sequentially connecting a large number of link plates 13 with a large number of shafts 14. The horizontal rod 16 is mounted on a shaft.

Further, a sprocket 17 is fixed to one end of the drive shaft 11, and an endless chain 20 is suspended between the sprocket 17 and a sprocket 19 fixed to one end of the output shaft 18 driven by the mission 4. There is.

Reference numeral 21 denotes a first ejector, which is formed into a block shape with a width larger than that of the guide roller 10, and has guide surfaces on the front and rear surfaces that are inclined outwardly and downwardly in side view. 22.23 are formed.

The first removing body 21 is located inside between the lower rear side of the guide rollers 10 at the front on both sides and a position close to the folded part in the downward return section a of the endless chains 15 on both sides. and is fixed to the side frames 1 on both sides.

As a result, the front end of the guide surface 22 of the first displacing body 21 is located just before the guide roller 10 and the endless chain 15 engage with each other.

Further, reference numeral 24 denotes a second ejector, and the second ejector 24 is formed into an elongated plate shape with a width larger than that of the guide roller 10.

The base end portion 25 of the second excluder 24 is located at the rear upper part of the first excluder 21 on both sides and is rotatable on a support shaft 26 protruding from the side frames 1 on both sides. It is mounted on a shaft, and its tip 2 rotates due to its own weight.
7 is designed to normally slide on the endless chain 15 and horizontal rod 16 located close to the guide surface 23 on the rear side of the first displacing body 21 .

Further, rectangular window holes 28 are formed in the side plates 1 on both sides located ``outside'' of the second exclusion bodies 24 on both sides.

Further, 29 is a chute, and this chute 29 is connected to the discharge end of the conveyor body 8.

In addition, 30 in the figure is a support 3 at the rear lower part of the side frame 1 on both sides.
It is a grounding/sliding body attached via 1.

In such a configuration, the connecting frame 5 is connected to the tractor, and the human power shaft 3 is connected to the output shafts of the tractors 1 to 1.

Then, the machine frame is towed by the l-tractor and the mission 4 is driven via the input shaft 3.
This causes the conveyor body 8 to move clockwise in FIG. 1 via the endless chain 20.

At the same time, harvested products such as potatoes are dug up by the tip 7 and sent onto the upper conveyance section C of the conveyor body 8 at the rear, and the harvested products are conveyed in this upper conveyance section C from between each horizontal rod 16. It is transported rearward while sieving off the attached soil, and is exposed and discharged from the discharge end to the ground surface via the chute 29, or stored in a container (not shown) provided behind the chute 29.

In the case of item 2, the vicinity of the turning part in the downward return part a of the conveyor body 8 gathers dirt, gravel, stones, etc. and heads towards the turning part with this gravel and stones, Even if debris or stones are separated from the upper conveyance section C and fall into the downward return section a, the debris or stones can be removed by the first The dirt and stones are removed by the remover 21 and the second remover 24, and are prevented from intervening in the meshing portion between the guide roller 10 and the endless chain 15.

That is, the lower surfaces of the first excluder 21 and the second excluder 24 prevent gravel and stones from entering the endless chain 15, and the first and second excluder 21.2
4 is formed with a width larger than that of the guide roller 10, so that it reliably prevents the endless chain 15 from entering the inside thereof and, in some cases, eliminates it laterally.
Debris and stones that are stuck between the horizontal rods 16 of the downward return section a and move toward the folded section are pushed back by the second removal body 24, and are pushed back by the rear slope of the first exclusion body 21. Guide surface 23
It will be discharged by

The removed gravel and stones are then discharged from the window hole 28 formed in the side frame 1, depending on the case.

Also, the tension of the conveyor body 8 may become distorted due to use.
In particular, even when the downward return portion a hangs downward, the second displacing body 24 automatically rotates downward by its own weight using the support shaft 26 as a fulcrum, and its tip 27 is attached to the endless chain 15. This results in an engaging and sliding contact, so that debris and stones can always be removed without being affected by the tension of the conveyor body 8.

In the embodiment described above, the second ejector 24 is rotatably supported on the support shaft 26, and is rotated by its own weight to come into sliding contact with the endless chain 15. 24 may be provided with a coil spring so that at least the tip 27 of the second displacing body 24 is always pressed against the endless chain 15 with a predetermined pressure.

Further, depending on the case, a roller or the like having a length larger than the width of the guide roller 10 may be rotatably mounted on the tip end 27 of the second removing body 24.

According to the present invention, the first exclusion body is provided in close proximity between the rear lower part of the guide roller that turns around the conveyor body and the downward return portion of the endless chain of the conveyor body, and the first exclusion body Since a second removing body with its tip sliding on the endless chain is installed at the rear of the roller, the first and second removing members prevent debris from entering between the guide roller and the endless chain. Therefore, there is no risk of the guide rollers being damaged by debris or stones or the conveyor body's circulation function being impaired, and therefore, the tension of the conveyor body is also reduced. This allows the conveyor body to move smoothly at all times without being affected.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a side view of a harvester, and Fig. 2 is an enlarged perspective view of a portion of the same conveyor body. 1... Machine frame, 7... Excavation body, 8...
... Conveyor body, 10 ... Guide roller, 1
2... Drive wheel, 15... Endless chain, 16... Horizontal rod, 21... i-th exclusion body, 24... Second excluded body, 27...
The tip end of the second displacing body, a... The downward return part of the endless chain.

Claims (1)

[Scope of utility model registration request] A machine frame, a digging body installed at the lower front end of the machine frame to dig up the harvested products in the field, and guide rollers and drive wheels connected to the rear end of the machine frame and mounted on shafts on both sides. A conveyor body configured by pivoting a horizontal rod between the endless chains on both sides that are rotated and suspended from the conveyor body, and the lower part of the rear side of the guide roller and the downward return portion of the endless chain at the front portions of both sides of the conveyor body. a first ejector disposed adjacently therebetween, and a second ejector located rotatably at the rear of the first ejector on both sides, the tip of which is always in sliding contact with the endless chain. An excavator characterized by having a body.