JPH0228693Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to the structure of a chain of a barn cleaner, which is a device for carrying out excrement in a livestock barn.

A barn cleaner is a device that transports livestock excrement discharged into the trench outside the barn by moving a paddle around a trench in the livestock barn.The paddle is attached to a chain in a cantilevered manner. It is becoming driven. An elevator is provided around the paddle, and the excrement scraped out by the paddle is lifted along the paddle guide of the elevator and is discharged by falling from the tip of the elevator. Figure 1 is a conceptual diagram of this barn cleaner, where 1 is a moat provided around the floor of the livestock barn, 2 is an elevator, 3 is a chain drive device installed at the tip of the elevator 2, and 4 is a chain drive device installed along the elevator. 5 is a paddle attached to the chain 4, and 6 is a paddle guide provided in the ascending path of the elevator 2.

The chain 4 runs around inside the bent trench 1, and the operating environment is extremely bad, so the chain 4 becomes extremely loose due to wear over time. At step 7, the chain 4 is twisted 90 degrees and allowed to hang under its own weight, and at this point the slack in the chain 4 is taken up and tension is applied to the chain 4. Therefore,
During its operation, the burn cleaner chain 4 is subjected to displacements in various directions as indicated by the arrows in FIG. That is, in addition to the normal bending direction A of the chain 4, the connecting portion 8 between the elevator 2 and the trench 1
It is bent about 20 degrees in the direction of arrow B, and twisted 90 degrees in the direction of arrow C to prevent it from loosening as described above. Furthermore, the operating environment of this chain 4 is extremely bad and the chain links are subject to severe wear, so the links themselves must have high wear resistance. It must be easy to pack.

A normal chain as shown in Fig. 2 is also used as the chain 4 for such a burn cleaner, but in such a chain, the pins are severely worn and the chain frequently breaks, and the chain is stretched. Sometimes it is troublesome to drop links and close the chain. In order to improve this drawback, a hook 9 as shown in FIG.
A chain is also used which is formed by connecting links 11 in which a long hole 10 and a long hole 10 are integrally formed by shape forging. A chain constructed by connecting such chain links 11 has excellent abrasion resistance, and it is easy to drop the links 11 and tighten the chain, but when the chain is twisted, the hooks 9 form long holes. 10, it is not possible to use the above-mentioned tensioning means using its own weight, which requires multiple tensioning devices using springs, and the paddles 5...5 cannot be erected by twisting the chain. A paddle guide 6 must also be provided on the descending side 7 of 2. Furthermore, the chain link 11 as shown in the third figure cannot be formed all at once by shape forging, which also has the disadvantage of increasing manufacturing costs.

This idea was made to solve the problems of conventional chains in burn cleaners.There is no risk of the links coming off even when the chain is twisted, and it has excellent wear resistance, making it easy to attach and detach the links. This was done for the purpose of obtaining a chain.

The barn cleaner chain of this invention has a fourth
A first link 13 with elongated holes 12, 12 at both ends as shown in the figure, and a hook 1 as shown in FIG.
The hooks 14, 14 are formed by alternately connecting the second links 15 provided at both ends.
14 is a hook 14,1 which is rotatable within the elongated hole 12.
The tip portions 16, 16 of the first link 13 are characterized by being formed into a flat shape having a width c narrower than the major axis a of the long hole 12 of the first link 13 and wider than the minor axis b. In the embodiment shown in the figure, 17 is a through hole provided for screwing the paddle 5, and 18 is a through hole provided for fitting the paddle 5 into the paddle 5.
This is a groove formed to hold the A chain link 13 as shown in FIGS. 4 and 5,
15 can be formed all at once by shape forging, have excellent durability like the chain link 11 shown in the third figure, and are extremely easy to remove. and the tip of the hook 16,1
6 is wider than the short axis b of the elongated hole 12,
Even if the chain is twisted, there is no possibility that the hook 14 will come off the elongated hole 12. The links 13 and 15 are placed at right angles to each other as shown in FIG.
2, the hook 14 is inserted, as shown in FIG.
Connected by rotating 90 degrees. Link 1 like this
A chain constructed by alternately connecting links 13 and 15 requires a certain amount of slack in order to connect them, and when tightening the stretched chain, it is necessary to remove links 13 and 15 as a pair. Therefore, the length of the chain can only be adjusted in rough increments compared to the chain made up of the links 11 shown in Fig. 3, but a tension applying structure using its own weight on the descending side 7 of the elevator 2 as described above is adopted. Therefore, there is no need to support the operation of the device, and there is no risk that the structure will become complicated.

As described above, the barn cleaner chain of this invention has a first link 1 having elongated holes 12 at both ends.
3 and a second link 15 which is rotatable within the elongated hole 12 and has a hook 14 at both ends, which has a flat and wide tip 16 that is narrower than its major axis and wider than its minor axis. It can handle bending and twisting in various directions required for burn cleaner chains, and there is no risk of the chain coming off during bending or twisting, so an inexpensive tensioning structure using its own weight can be used. can be adopted, the manufacturing cost is low,
It has excellent durability and is extremely easy to adjust the chain length, making it extremely suitable as a chain for burn cleaners.

[Brief explanation of the drawing]

Fig. 1 is a conceptual diagram of a barn cleaner, Fig. 2 is a diagram showing the directions of bending and twisting acting on a burn cleaner chain, and Fig. 3 is an example of links of a conventionally used burn cleaner chain. FIG. 4 is a perspective view showing the first link constituting the chain of this invention, FIG. 5 is a perspective view showing the second link constituting the chain of this invention, and FIG. 6 is a perspective view showing the first link constituting the chain of this invention. It is a top view which showed the connection means of a link and a 2nd link. In the figure, 1 is a moat provided in the livestock barn, 2 is an elevator, 3 is a chain drive device, 4 is a chain, and 5
is the paddle, 12 is the long hole, 13 is the first link, 1
4 is the hook, 15 is the second link, 16 is the tip of the hook 14, a is the long diameter of the long hole 12, and b is the long hole 1.
2, the minor axis c is the width of the tip 16 of the hook.

Claims (1)

[Scope of utility model registration request] a first link 13 with elongated holes 12 at both ends;
Hooks 14 are rotatable within the elongated hole 12 and are alternately connected to second links 15 provided at both ends with hooks 14 having flat and wide tip portions 16 that are narrower than the major axis a and wider than the minor axis b. Chain for barn cleaners.