Conveyor system

• US 5,137,144 A
• Filed: 09/21/1990
• Issued: 08/11/1992
• Est. Priority Date: 09/22/1989
• Status: Expired due to Fees

• Current Assignee: Akira Uehara
• Original Assignee: Akira Uehara
• Inventors: Uehara, Akira
• Primary Examiner(s): DAYOAN, DARRELL G
• Application Number:
  US07/585,986
• Time in Patent Office: 690 Days
• Field of Search: 198/822, 198/851, 198/853, 198/698
• US Class Current: 198/822
• CPC Class Codes: B65G 17/10 the surface forming a longitudinal trough
• CPC Class Codes: B65G 2201/04 Bulk

Abstract

A conveyor system having conveyor pieces connected together, without gaps, and links having projections engageable with sprockets connected in an endless manner to thereby constitute an endless conveyor. The arrangement permits powdery goods or fluid goods to be conveyed without falling or spilling from the link portions of the loading surface of the endless conveyor. A plurality of side protect fins are placed one on another without gaps on the sides of the endless conveyor in its width direction. This allows powdery goods or fluid goods to be conveyed without falling or spilling from the overlapping portions of the side protect fins at the sides of the loading surface.

Claims

1. A conveyor system comprising:

an endless conveyor;

a pair of sprockets, said endless conveyor extending around said pair of sprockets provided;

a guide rail assembly comprising at least one guide rail, said assembly having a front portion and an end portion, said pair of sprockets being respectively positioned at said front portion and said end portion of said guide rail assembly;

said endless conveyor having a loading surface for conveyed goods and further comprising;

a plurality of conveyor pieces;

links extending along said guide rail; and

projections engageable with said sprockets;

each of said conveyor pieces having concave and convex faces at front and rear end portions in a running direction of said endless conveyor, each of said conveyor pieces further having opposite lateral end faces, said links being disposed under said conveyor pieces and having position aligning walls adapted to abut on said opposite lateral end faces of said conveyor pieces for attachment to said conveyor pieces, and each of said links having link portions provided at a front and rear in a running direction of said link portions and a projection provided at a bottom for engagement with said sprockets, said conveyor pieces being placed one on another so that said concave and convex faces of each of said conveyor pieces are engageable with said convex and concave faces of adjoining conveyor pieces.

2. The conveyor system according to claim 1, wherein said links are attached to opposite lateral end portions of said conveyor pieces, said links having outer end surfaces, said conveyor system further comprising side protect fins provided on said outer surfaces of said links, inclined in such a manner as to be open toward one end portion of a running direction.

3. The conveyor system according to claim 1 wherein said link portions of said links each have a projecting portion formed at one end a recess portion formed at the other end, said projecting portion of each of said link portions is fitted to said recess portion of said link portion of an adjoining one of said links while said recess portion is fitted to said projecting portion of said link portion of another adjoining one of said links, and said link portions are rotatable by means of coupling shafts.

4. The conveyor system according to claim 1, wherein said links have outer end faces and said links each have a side protect fin attaching portion provided on each said outer end face, each of said side protect fins having a front and rear and, further, having convex and concave faces respectively formed at said front and rear of said side protect fin attaching portion in such a way that when said links are connected to one another, said convex face of each side protect fin engages with a respective concave face of an adjoining one of said side protect fin attaching portions and said concave face of each side protect fin engaging with said convex face of another adjoining one of said protect fin attaching portions.

5. The conveyor system according to claim 1 wherein an engaging slide member is provided on a side of said sprocket engaging projection of each of said links and a rail edge is formed on said guide rail assembly for engagement with said engaging slide member.

6. The conveyor system according to claim 1, wherein said links are attached to opposite lateral end portions of said conveyor pieces, side protect fins are provided on outer ends faces of said links, inclined in such a manner as to be open toward one end portion, in a running direction of said conveyor, each of said links has opposite outer end portions and each of said side protect fins has a surface which faces a respective outer end portion of one of said links and at least one hole extending through said side protect fin, said conveyor system further including a coupling shaft for each of said holes in said side protect fin, each said coupling shaft extending through said hole and into a further hole of an associated one of said link portions of said links, each said coupling shaft further having a head positioned on an outer surface of a respective one of said side protect fins, and wherein a portion of an adjacent side protect fin having a portion constituting a blind covering without a through hole for said coupling shaft.

7. The conveyor system according to claim 1, further comprising auxiliary links disposed between opposite sides of said endless conveyor, said conveyor pieces further comprising engage claws, said auxiliary links having engage receiving portions engaged with said engage claws of said conveyor pieces, said guide rail assembly further comprising a support member, and an auxiliary link receiving member provided on said support member of said guide rail assembly, and said auxiliary links having a pair of sides, said conveyor system further comprising a pair of interval holding members extending along the conveyor at a position for guiding both of said pair of sides of said auxiliary links to thereby maintain said auxiliary links along a predetermined path.

8. The conveyor system according to claim 2, wherein a longitudinal recess is formed in an inner surface of each of said side protect fins and a partition having a side portion fittable in said recess is formed on each of said conveyor pieces.

9. The conveyor system according to claim 1 wherein an engaging slide member is a roller attached to a shaft of each of said links.

10. The conveyor system according to claim 1, wherein a projection is formed at one of the front and rear of each of said link portions, and a tie recess is formed at the other of the front and rear of each of said link portions.

11. The conveyor system according to claim 1, wherein a buffer made of a flexible material is provided on a flat face of each of said conveyor pieces.

12. The conveyor system according to claim 1, wherein a recess is formed in a flat face of each of said conveyor pieces and a partition is formed on a flat face of each of said conveyor pieces and stands upright in said recess.

13. The conveyor system according to claim 1, wherein shaft members are provided at predetermined intervals on outer surfaces of said links and a limit switch is provided on a side of said guide rail, whereby when said shaft members reach said limit switch, an ON/OFF switching action of said limit switch is conducted.

14. The conveyor system according to claim 1, wherein a sprocket engage chain comprising a link piece, a bush and a coupling shaft is provided along and on each of said links.

15. The conveyor system according to claim 2, wherein said side protect fins are separate from said links.

16. The conveyor system according to claim 2, wherein said side protect fins are unitary with said links.

17. The conveyor system according to claim 6, wherein said side protect fins are separate from said links.

18. The conveyor system according to claim 6, wherein said side protect fins are unitary with said links.

19. The conveyor system according to claim 12, wherein said partitions are separate from said conveyor pieces.

20. The conveyor system according to claim 12, wherein said partitions are unitary with said conveyor pieces.

21. A conveyor section for use in an endless conveyor system comprised of a plurality of said conveyor sections, said conveyor section comprising:

a conveyor piece having concave and convex surfaces, at front and rear portions, and laterally opposite end surfaces, with respect to a direction of movement of the conveyor system, said concave and convex surfaces being adapted to be engageable with respective concave and convex surfaces of adjoining conveyor pieces to be adapted to thereby form an endless series of conveyor sections;

a plurality of laterally positioned links, each of said links comprising;

at least one portion for engagement with a guide rail of the endless conveyor system;

a projection for engagement with sprockets of the conveyor system; and

a position aligning wall;

said conveyor piece being secured upon said plurality of laterally positioned links, and said position aligning wall of each of said laterally positioned links engaging one of said end surfaces of said conveyor piece.

22. The conveyor section of claim 21, further comprising:

at least one auxiliary link positioned between said laterally positioned links, said at least one auxiliary link being secured to said conveyor piece and further having a portion for sliding upon a slide receiving member of the conveyor system.

23. The conveyor section of claim 22, wherein:

said conveyor piece comprises a plurality of engage claws and at least one of said laterally positioned links and said auxiliary links comprise engage receiving portions, wherein said conveyor piece is secured upon said links, having said engage receiving portions, by means of said engage claws being received within said engage receiving portions.

24. An endless conveyor system comprising:

a plurality of conveyor sections connected together, each of said conveyor sections comprising;

a conveyor piece having concave and convex surfaces, at front and rear portions, and laterally opposite end surfaces, with respect to a direction of movement of the conveyor system, said concave and convex surfaces being engaged with respective concave and convex surfaces of adjoining conveyor pieces to form an endless series of connected conveyor sections;

a plurality of laterally positioned links, each of said links comprising;

at least one portion for engagement with a guide rail of the endless conveyor system;

a projection for engagement with sprockets of the conveyor system; and

a position aligning wall;

said conveyor piece being secured upon said plurality of laterally positioned links, and said position aligning wall of each of said laterally positioned links engaging one of said end surfaces of said conveyor piece.

25. The endless conveyor system of claim 24, further comprising:

for each of said conveyor pieces, at least one auxiliary link positioned between said laterally positioned links, said at least one auxiliary link being secured to said conveyor piece and further having a portion for sliding upon a slide receiving member of the conveyor system.

26. The endless conveyor system of claim 25, wherein:

each of said conveyor pieces comprises a plurality of engage claws and at least one of said laterally positioned links and said auxiliary links comprises engage receiving portions, wherein said conveyor piece is secured upon said links, having said engage receiving portions, by means of said engage claws being received within said engage receiving portions.