Universal safety guard assembly for a conveyor

• US 5,078,250 A
• Filed: 01/07/1991
• Issued: 01/07/1992
• Est. Priority Date: 01/07/1991
• Status: Expired due to Term

• Current Assignee: DB Industries LLC (3M Company)
• Original Assignee: Sinco Incorporated
• Inventors: Cole, Barry A.
• Primary Examiner(s): Valenza, Joseph E.
• Assistant Examiner(s): GASTINEAU, CHERYL
• Application Number:
  US07/638,204
• Time in Patent Office: 365 Days
• Field of Search: 198/860.3, 198/861.1, 198/860.1, 193/35 R
• US Class Current: 193/35.00R
• CPC Class Codes: B65G 21/00 Supporting or protective framework or housings for endless load-carriers or traction elements of belt or chain conveyors

Abstract

An adjustable safety guard assembly for a conveyor. The conveyor guard has frame modules which can be adapted to guard conveyors having a variety of configurations. The frame modules are mounted adjacent a conveyor, and are linked together by cables from which guard nets are suspended.

Claims

1. A conveyor guard having an adjustable support system, comprising:

a plurality of frame modules, each comprising;

a support arm comprising at least two longitudinally positioned, slidably intersecting members,

first fastener means for adjustably fixing the length of the support arm;

at least one support strut comprising at least two longitudinally positioned, slidably intersecting members;

second fastener means for adjustably fixing the length of the at least one support strut; and

first mounting means for mounting the at least one support strut to the support arm so that the at least one strut is disposed in substantially perpendicular relationship to the support arm; and

second mounting means for mounting the frame modules adjacent a conveyor.

2. The support system according to claim 1, wherein the first mounting means comprises means for independently adjusting the position of each of the at least one support struts relative to the support arm.

3. The support system according to claim 1, wherein the second mounting means comprises means for independently adjusting the effective spacing of each of the at least one support struts from the conveyor.

4. The support system according to claim 1, further comprising a first cable suspended between support struts of at least two frame modules.

5. The support system according to claim 4, further comprising a second cable suspended between support struts of at least two frame modules, wherein each support strut has an upper end and a lower end, the first cable is suspended from the upper end of the support strut of two frame modules, and the second cable is suspended from the lower end of the support strut of two frame modules.

6. The support system according to claim 1, wherein the first mounting means is fixed to the end of the support arm and a support strut is slidably adjustable relative to the mounting means.

7. The support system according to claim 6, wherein the first mounting means comprises a sleeve dimensioned to closely and slidably receive the support strut.

8. The support system according to claim 1, wherein the support arms and the support struts each comprise slidably intersecting elongated tubular members having two pairs of opposed sides, the opposed sides comprising means defining pairs of aligned apertures, and the means for adjusting the lengths of the support arms and the support struts comprise bolts receivable in the apertures.

9. The support system according to claim 1, wherein the conveyor has parallel side rails and the second mounting means comprises clamp assemblies for mounting at least some of the frame members to the side rails.

10. The support system according to claim 1, wherein at least one frame module has two support struts and is H-shaped.

11. A conveyor guard having an adjustable support system, comprising:

a plurality of frame modules, each comprising;

a support arm comprising at least two longitudinally positioned, slidably intersecting members;

first fastener means for adjustably fixing the length of the support arm;

at least one support strut comprising at least two longitudinally positioned, slidably intersecting members;

second fastener means for adjustably fixing the length of the at least one support strut; and

first mounting means for independently mounting and adjustably positioning each of the at least one support struts to the support arm in substantially perpendicular relationship thereto;

second mounting means for mounting the frame members to a conveyor; and

third fastener means for independently adjusting the effective spacing of each of the at least one support struts from the conveyor.

12. The support system according to claim 11, further comprising a first cable suspended between support struts of at least two frame modules.

13. The support system according to claim 12, further comprising a second cable suspended between support struts of at least two frame modules, wherein each support strut has an upper end and a lower end, the first cable is suspended from the upper end of support struts of the at least two frame modules, and the second cable is suspended from the lower end of support struts of the at least two frame modules.

14. The support system according to claim 11, wherein the first mounting means is fixed to the ends of a support arm and the support strut is slidably positionable relative to the mounting means.

15. The support system according to claim 14, wherein the first mounting means comprises a sleeve dimensioned to closely and slidably receive the support strut.

16. The support system according to claim 11, wherein the support arm and the at least one support strut each comprise slidably intersecting elongated tubular members having two pairs of opposed sides, the opposed sides comprising means defining pairs of aligned apertures, and the first and second fastening means comprise bolts receivable in the apertures.

17. The support system according to claim 11, wherein the conveyor has parallel side rails and at least some of the frame members are attached to the side rails by the second mounting means.

18. The support system according to claim 13, wherein at least one frame module has two support struts and is substantially H-shaped.

19. An adjustable conveyor guard system, comprising:

a conveyor defining a transport path;

a plurality of frame modules, each comprising;

a support arm comprising at least two longitudinally positioned, slidably intersecting members;

first fastener means for adjustably fixing the length of the support arm;

at least one support strut comprising at least two longitudinally positioned, slidably intersecting members;

second fastener means for adjustably fixing the length of the support strut; and

first mounting means for mounting each of the at least one support struts to the support arm;

second mounting means for mounting the frame members adjacent the conveyor so that the support struts are disposed in generally parallel upright relationship;

first and second cables suspended between the support struts of at least two frame modules; and

a net attached to the first and second cables and extending along the transport path of the conveyor.

20. The conveyor guard system according to claim 19, wherein the third fastener means comprises means for independently adjusting the position of each of the at least one support struts relative to the support arm.

21. The conveyor guard system according to claim 19, wherein the second mounting means comprises means for independently adjusting the effective spacing from the conveyor of each of the at least one support struts.

22. The conveyor guard system according to claim 19, wherein the first mounting means is fixed to the support arm and is slidably adjustable relative to the support strut.

23. The conveyor guard system of claim 19, wherein the path has a Y-shaped branch.

24. A safety system for a conveyor comprising:

a conveyor defining a transport path, the conveyor having parallel side rails;

a plurality of frame modules, each comprising;

a support arm comprising at least two longitudinally positioned, slidably intersecting members;

first fastener means for adjustably fixing the length of the support arm;

at least one support strut comprising at least two longitudinally positioned, slidably intersecting members;

second fastener means for adjustably fixing the length of the support strut; and

third fastener means for fastening each of the at least one support struts to the support arm;

mounting means for mounting the frame members to the side rails of the conveyor;

at least first and second cables suspended between the support struts of at least two frame modules; and

at least one net attached to the cables and extending along the path of the conveyor.