Conveyor belt and device for locking a rod to a link of such a conveyor belt

Abstract

Provided is a conveyor belt including at least two parallel chains each including a plurality of consecutive links; and a plurality of rods extending between the at least two parallel chains for linking the consecutive links. Each rod extends with each end through the corresponding chain linking two consecutive links to each other. One of the two consecutive links is at least axially locked to the rod to avoid movement of the link relative to the rod. The other of the two consecutive links is rotatably arranged around the respective rod. Also provided is at least one device for providing the lock between a rod and a respective link of the conveyor belt. The device includes a body; an insertion hole in which an end of the rod is inserted along an insertion axis, which insertion hole is arranged in the body and a protrusion arranged to the body and extending from the body parallel to and at a distance of the insertion axis; fixing means for fixing the end of the rod in the hole in at least axial direction and preferably also in rotational direction. The respective link is provided with a locking opening through which the protrusion extends.

Claims

1. A conveyor belt comprising: at least two parallel chains each comprising a plurality of consecutive links; and a plurality of rods extending between the at least two parallel chains for linking the consecutive links, wherein each rod extends with each end through the corresponding chain linking two consecutive links to each other, wherein one of the two consecutive links is at least axially locked to the rod to avoid movement of the link relative to the rod and wherein the other of the two consecutive links is rotatably arranged around the respective rod, at least one device for providing the lock between a rod of the plurality of rods and a respective link of the conveyor belt, the at least one device comprising: a body; an insertion hole in which an end of the rod is inserted along an insertion axis, which insertion hole is arranged in the body; a protrusion arranged relative to the body and extending from the body parallel to and at a distance from the insertion axis; and fixing means for fixing the end of the rod in the hole in at least an axial direction, wherein the respective link is provided with a locking opening through which the protrusion extends, and wherein the fixing means comprises: a fixing hole arranged in the body and extending perpendicular to the insertion axis such that the fixing hole partially intersects with the insertion hole; and a pin configured to extend through the fixing hole and at least partially intersecting the insertion hole.

2. The conveyor belt according to claim 1, wherein a nose part is arranged at the free end of the protrusion, which nose part extends perpendicular to the insertion axis and at a distance from the surface of the body and on the opposite side of the respective link.

3. The conveyor belt according to claim 1, wherein the body comprises a flat contact surface for direct contact with the respective link, and wherein both the hole and the protrusion are extending perpendicular from the flat contact surface.

4. The conveyor belt according to claim 1, wherein each link has a first hole on one end of the link and a second hole on the opposite end of the link, wherein rods extend both through the first hole and the second hole and wherein the rod extending through the first hole is at least axially locked to the link and wherein the rod extending through the second hole is rotatable in said second hole.

5. The conveyor belt according to claim 4, wherein the locking opening is provided between the first hole and the second hole.

6. The conveyor belt according to claim 5, wherein the locking opening and the second hole are fused together.

7. The conveyor belt according to claim 1, wherein the end of the rod is provided with a recessed surface zone, which is aligned with the fixing hole and wherein the pin is in direct contact with the recessed surface zone to prevent at least axial displacement of the rod relative to the body.

8. The conveyor belt according to claim 7, wherein the recessed surface zone is a flattened surface zone or a peripheral groove.

9. The conveyor belt according to claim 1, wherein the lock between a rod and a respective link of the conveyor belt is provided by a rod end extending through the respective link and being bent back into a locking opening provided in the respective link.

10. A device for providing the lock between a rod and a respective link of a conveyor belt according to claim 1, which device comprises: a body; an insertion hole in which an end of a rod can be inserted along an insertion axis, which insertion hole is arranged in the body; a protrusion arranged relative to the body and extending from the body parallel to and at a distance of the insertion axis; and fixing means for fixing the end of the rod in the hole in at least axial direction and preferably also in rotational direction.

11. The device according to claim 10, wherein the fixing means comprise: a fixing hole arranged in the body and extending perpendicular to the insertion axis, wherein the fixing hole partially intersects with the insertion hole; and a pin extending through the fixing hole and intersecting the insertion hole.

12. The device according to claim 1, wherein the fixing means fixes the end of the rod in a rotational direction.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) These and other features of the invention will be elucidated in conjunction with the accompanying drawings.

(2) FIG. 1A shows a top view of an embodiment of a conveyor belt according to the invention.

(3) FIG. 1B shows a side view of two consecutive links of the conveyor belt of FIG. 1A.

(4) FIG. 2 shows different side views of a locking device for the conveyor belt according to FIG. 1A.

(5) FIG. 3A shows a detailed top view of a rod, link and locking device of the conveyor belt according to FIG. 1A.

(6) FIG. 3B shows the rod of FIG. 3A.

DESCRIPTION OF THE INVENTION

(7) FIG. 1A shows a conveyor belt 1 according to the invention. The conveyor belt 1 curves around a driven drum 2. The conveyor belt 1 has two parallel chains 3, 4 of links 5.

(8) A plurality of rods 6 extend between the two chains 3, 4 of links. Each rod 6 extends with an end through two consecutive links 5 and the end is bend back into the link 5 to fix the rod to the links 5. One rod 7 of the conveyor belt 1 is however provided with a locking device 8 according to the invention.

(9) FIG. 1B shows two consecutive links 5 from a side. Each link 5 has a first hole 9 and a second slot shaped hole 10, which allows the curvature of the conveyor belt 1 as shown in FIG. 1A. A locking opening 11 is positioned between each first hole 9 and second hole 10.

(10) FIG. 2 shows different side views of the locking device 8. The device 8 has a body 12 with an insertion hole 13 with an insertion axis 14. The body 12 is furthermore provided with a protrusion 15 extending from the body 12 parallel to and at a distance of the insertion axis 14.

(11) A nose part 16 is arranged to the free end of the protrusion, 15 and extends perpendicular to the insertion axis 14.

(12) Furthermore, a fixing hole 17 is arranged in the body 12 and extends perpendicular to the insertion axis 14. The fixing hole 17 partially intersects with the insertion hole 13. A locking pin 18 can be inserted into the fixing hole 17 to lock a rod into the body 12.

(13) The body 12 is provided with a flat contact surface 19 for direct contact with a link 5, as shown in FIG. 3A.

(14) FIG. 3A shows a detail of a link 5, a rod 7 and a locking device 8 according to the invention. The nose part 16 is moved through the locking opening 11 and hooks behind the link 5 opposite of the body 12 of the locking device 8. The rod 7 extends through the first holes 9 and into the insertion opening.

(15) The end of the rod 7 has a flattened surface zone 20 (see FIG. 3B), such that the locking pin 18 can lock the end of the rod 7 into the body 12. Because the protrusion 15 extends in the insertion opening 11, the rod 7 is locked to the link 5 and relative rotation is prevented. Because the nose part 16 extend on the opposite side of the link 5, the rod 7 can also no longer shift in axial direction relative to the link 5. If a peripheral groove would be applied to the end of the rod 7, instead of a flattened surface zone, then rotation of the body 12 relative to the rod 7 would be possible, but still axial movement would be prevented.