JPS5840125Y2 - drilling chain - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a horticulture chain in which a large number of groin claws are arranged and mounted on a chain, and the chain is driven to revolve to excavate soil.

As shown in FIGS. 1 and 2, a conventional split chain uses a link plate 2 having a split claw attachment part 1 as an outer link plate of the chain, and attaches a split claw 4 to the non-knock plate 2 along the length of the chain. They are arranged staggered in the direction or symmetrically about the center line.

As shown in the figure, the ring plate 2 is made by bending the split claw attachment portion 1 parallel to the roller 3 and on the opposite side to the center line of the chain.

Therefore, the minimum width of the excavated groove is twice the distance a from the center of the chain to the tip of the split claw attachment part 1, which is larger than the chain width.

Therefore, it is not suitable as a trenching chain when it is necessary to make the excavation groove width smaller.

In addition, other conventional drilling chains are shown in Figure 3.
As shown in FIG. 4, there has been a device in which a split claw mounting portion 1 is provided by extending the outer link plate 2 in the height direction, and a split claw 4 is fixed to the mounting portion.

The excavated groove width 2a of such a split chain is equal to the chain width.

However, the height h from the roller's 3-axis center is relatively high, and as a result, the bending moment (
It has the disadvantage that M=PXh) is large.

Therefore, the present invention provides a moat chain that eliminates the above-mentioned drawbacks.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

In the present invention, as shown in FIGS. 5 and 6, link plates 5 having split claw attachment portions 1 are attached as part of the outer link plates of the chain in a staggered manner in the longitudinal direction of the chain.

As shown in the figure, the link plate 5 has a split claw mounting portion 1 bent parallel to the roller axis and toward the center line of the chain, and a split claw 4 is placed on the split claw mounting portion 1. Fixed.

Therefore, the minimum width of the excavated groove 2a' is approximately equal to the chain width.

At the same time, the height h' from the roller axis to the tip of the digging claw
can be made relatively small (h'<h), and the bending moment applied to the link plate 5 for the same load (M=
PXh') can be made relatively small.

This is because the height of the split claw mounting portion 1 from the roller shaft can be positioned relatively low, so that the height of the tip of the split claw fixed to the mounting portion 1 can be made relatively small.

In addition, when it is necessary to increase the trench width 2a', as shown in FIGS. 7 and 8, a long-arm trench claw 4 is used, or
The moat splitting claw 4 may be fixed via the arm piece 6.

Next, in the one shown in FIG. 9, the longitudinal distance l of the split claw attachment part 1 is made larger than that in FIG. 5, and the attachment part is provided so as to protrude over the pin.

Therefore, it has the effect of preventing dirt from entering between the pin link and the roller link and between the roller link and the roller.

The present invention has the above configuration, and the minimum roughing groove width can be reduced to almost the same as the chain width, and the adjustment range of the roughing groove width can be made larger than that of conventional chains.

Furthermore, since the height from the pitch line of the chain to the tip of the additive claw can be reduced, it is possible to reduce the minimum trench depth, reduce the bending moment applied to the chain, and extend the life of the chain. It has a remarkable effect.

[Brief explanation of the drawing]

1 to 4 show a conventional additive chain; FIGS. 1 and 3 are partial elevational views thereof, and FIGS. 2 and 4 are side views thereof. Figures 5 to 9 show embodiments of the present invention. Figure 5 is a partial elevational view of the first embodiment, Figure 6 is a side view of the same, and Figures 7 and 8 are views of the second and third embodiments. FIG. 9 is a partial side view showing each embodiment, and FIG. 9 is a partial elevation view of the fourth embodiment. 1... Hori split claw mounting part, 2... Link plate, 3... Roller, 4... Hori split claw, 5... Link plate , 6... Arm piece.

Claims (1)

[Scope of utility model registration request] A split chain in which the link plate of the chain is bent toward the center line of the chain to form the split claw attachment part.