JPS6224326B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a bucket elevator used in grain dryers, hullers, threshers, etc.

This type of conventional bucket cart elevator has a large number of plastic bucket carts fixed at regular intervals on the outside of an endless belt. In this case, since the belt is supported by pulleys, no protrusions can be formed on the inner surface of the belt.

Furthermore, since bucket belts are relatively easily damaged, they must be mounted using bolts and nuts so that they can be easily replaced, and the mounting structure becomes complicated in order to prevent bolt heads from protruding from the inner surface of the belt.

In addition, the belt tension must be extremely high to prevent slippage between the belt and the pulley, which places a large load on the pulley bearing, increasing wear on the bearing and shortening the belt's service life. There are also problems such as power consumption becoming larger than necessary.

The purpose of this invention is to provide a bucket elevator that uses a chain and sprocket instead of the belt and pulley as described above to reduce the load applied to the bearings, reduce power consumption, and also allows easy replacement of the bucket. That's true.

That is, in this invention, a pair of left and right chain links are integrally formed on the outside of the back of a plastic bucket main body, a pair of left and right chain links are integrally formed at appropriate intervals, a tubular roller part is integrally formed at one end between these two links, and the other links are A chain bucket belt with a pin hole provided at its end, a tubular roller portion integrally provided at one end of a pair of left and right chain links, and a chain member provided with a pin hole provided at the other end of both links are arranged alternately. At the same time, the roller part of the chain member and the roller-free end of each link of the chain member are overlapped on the outer side of the roller part of the chain member and the roller part of the chain member, and a plastic connecting pin having a head and an elastic engaging part that can be expanded and contracted is rotatably engaged with the pin hole and roller part of each link to form an endless chain, the folded part of this endless chain is engaged with a plastic sprocket, and side plates are placed on both sides of this sprocket. The present invention provides a bucketed elevator which is provided with a guiding part on its outer periphery to prevent the swinging of the endless chain and the bucketed elevator.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Details of the bucket elevator of the present invention will be explained below based on an embodiment shown in the accompanying drawings.

In Figure 1, A is the upper and lower sprocket, B
is a chain butt, and C is an endless chain.

As shown in Figures 2 and 3, Chain Bucket B has a pair of left and right chain links 2 integrally formed on the outside of the back of Bucket main body 1, and is made of strong polyamide plastic such as nylon, which is harmless to food products. A tubular roller portion 3 is integrally formed between the upper ends of both links 2.
and the upper back side of the main body 1 are a connecting part 5 having an opening 4.
It is connected with.

D is a chain member that integrally connects the upper ends of a pair of left and right chain links 6 with a tubular roller part 7, and a connecting plate 9 having an opening 8 between the front edge of both links 6 from the front part of the roller part 7. These are integrally formed from a strong plastic such as polyacetal.

Reference numeral 10 denotes a connecting pin made of strong plastic such as polyacetal, and the inner diameter of each of the roller parts 3 and 7 is large enough for this pin 10 to be rotatably fitted, and a pin is also provided at the lower end of each chain link 2 and 6. Pin holes 11 and 12 into which the pin 10 is rotatably fitted are formed.

The connecting pin 10 has a tubular shape, and has a head 13 having a larger diameter than the pin holes 11 and 12 at its rear end, and a tapered engagement portion 14 having a larger diameter than the pin holes 11 and 12 at its tip end. . In addition, a plurality of vertical slits 15 are formed from the tip of the engaging portion 14 to form the engaging portion 14.
When pushed into the pin holes 11 and 12, the engaging portion 14
is reduced so that it can pass through the pin holes 10 and 11.

Therefore, both sides of the lower part of the chain link 6 of the separate chain member D are placed on the outside of the upper roller part 3 of the chain link 2 of the chain bucket B, and the connecting pin 10 is inserted into the pin hole 12 of the chain link 6 and the hole of the roller part 3. Push in the pin 10 with the head 13 and the engaging part 14 at both ends.
2, insert the roller part 7 between the upper ends of the chain link 6 of another chain member D between the lower ends of the chain link 2, and insert the connecting pin 10 into the pin hole 11.
The chain links 2 of a large number of chain buckets B and the chain links 6 of a large number of chain members D can be connected alternately by pushing them into the holes of the roller part 7 and preventing them from coming off with the head 13 and the engaging part 14. An endless chain C of length C is obtained.

Figure 4 shows details of sprocket A.
The main body 16 is made of a strong plastic such as polyacetal and is provided around its periphery with teeth 17 which engage between the roller parts 3 and 7.

The main body 16 has a cylindrical boss 18 in the center, and the inside thereof is a hexagonal or other polygonal shaft hole 19, into which a hexagonal or other polygonal shaft 20 is fitted. Further, a large number of ribs 21 are formed radially between the outer periphery of the boss 18 and the teeth 17.

Reference numeral 22 denotes a side plate that is applied to both sides of the main body 16. In the center thereof, there is a polygonal hole into which the shaft 20 is fitted, and the outer side of the side plate is fixed with a stop ring 23.

This stop ring 23 is made of, for example, an elastic metal and is C-shaped. It is enlarged with a suitable tool and engaged with a circumferential groove formed on the outside of the shaft 20, so that it can be inserted in the axial direction of the sprocket body 16 and the side plate 22. It prevents movement.

Further, on the outer periphery of each side plate 22, an L-shaped bent guiding edge 24 is formed to guide the outer side of each link 2, 6 of the chain C and the back surface of the bucket main body 1 and prevent it from shaking.

This side plate 22 is formed by pressing a steel plate or the like, but it may also be made of plastic if there is an alternative to the steel plate. Further, in the case of FIG. 4, the center of one side of the main body 16 protrudes outward, and the center of the side plate 22 on this side also protrudes to cover this protrusion, but it is not necessary to do so.

Both ends of each shaft 20 of the pair of sprockets A configured as described above are rotatably supported by bearings mounted on the upper and lower sides of an appropriate frame (not shown), and either the upper or lower shaft 20 is connected to an appropriate drive device. to drive the chain C in the direction of the arrow in Fig. 1,
Grains and the like are loaded into a bucket main body 1 that moves upward and are transported upward.

The bucket elevator of the present invention has the above-mentioned structure, and since it is composed of the chain C and the sprocket A, there is no need to apply a large tension unlike the conventional belt type. Therefore, the load applied to the bearing is small,
Since less power is required for driving, energy is saved.

In addition, the chain bucket belt B including the link 2, the chain member D, the sprocket body 16, the connecting pin 10
These parts are all made of plastic and can be produced in large quantities using molds, and there is almost no need for machining, which significantly reduces manufacturing costs.

In addition, the side plates 2 attached to both sides of sprocket A
Since the guiding part 24 on the outer periphery of the belt 2 guides both sides of the chain C and both sides of the bucket main body 1, swinging of the chain C and the bucket main body 1 is prevented, and grains and the like are not spilled during transportation.

Furthermore, the chain bucket cart B is connected to the chain link 6 by a connecting pin 10, and since this connecting pin 10 can be easily attached and detached, the chain bucket cart body 1
Even if any wear or damage occurs, it can be easily replaced with a new one. Furthermore, by increasing or decreasing the number of chain members D connected between the chain buckets B, there is an effect that the transportation amount can be changed without changing the rotation speed of the sprocket A.

[Brief explanation of the drawing]

Fig. 1 is a partially vertical side view of the bucket elevator of the present invention, Fig. 2 is a partially enlarged vertical side view of the same as above, Fig. 3 is a partially longitudinal rear view of the same, and Fig. 4 is a longitudinal cross-section of the sprocket. It is a front view. 1...bucket body, 2,6...chain link,
3, 7...Roller part, 10...Connection pin, 11, 12
...pin hole, 13...head, 14...engaging part, 16...main body of sprocket, 22...side plate, 24...guiding part,
A... Sprocket, B... Chain bucket, C... Endless chain, D... Chain member.

Claims (1)

[Claims] 1 A pair of left and right chain links are integrally formed at appropriate intervals on the outside of the back of the plastic bucket main body, a tubular roller part is integrally formed at one end between these two links, and a A chain bucket belt with pin holes and a tubular roller part are integrally provided at one end of a pair of left and right chain links, and chain members with pin holes are arranged alternately at the other ends of both links. The ends of each link of the chain member and chain bucket without rollers are stacked on the outside of the roller part of the chain member and the chain member, and a plastic connecting pin with a head and an elastic engagement part that can be expanded and contracted is attached to each link. The pin hole and the roller part are rotatably engaged to form an endless chain, the folded part of this endless chain is engaged with a plastic sprocket, and side plates are placed on both sides of the sprocket to form an endless chain. A bucket elevator equipped with an endless chain and a guide section that prevents the bucket from swinging.