CA2517766A1 - Slide for conveyor assembly - Google Patents
Slide for conveyor assembly Download PDFInfo
- Publication number
- CA2517766A1 CA2517766A1 CA 2517766 CA2517766A CA2517766A1 CA 2517766 A1 CA2517766 A1 CA 2517766A1 CA 2517766 CA2517766 CA 2517766 CA 2517766 A CA2517766 A CA 2517766A CA 2517766 A1 CA2517766 A1 CA 2517766A1
- Authority
- CA
- Canada
- Prior art keywords
- bar
- hanger
- slide
- base
- return slide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
- B65G15/60—Arrangements for supporting or guiding belts, e.g. by fluid jets
- B65G15/62—Guides for sliding belts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G21/00—Supporting or protective framework or housings for endless load-carriers or traction elements of belt or chain conveyors
- B65G21/20—Means incorporated in, or attached to, framework or housings for guiding load-carriers, traction elements or loads supported on moving surfaces
- B65G21/2045—Mechanical means for guiding or retaining the load on the load-carrying surface
- B65G21/2063—Mechanical means for guiding or retaining the load on the load-carrying surface comprising elements not movable in the direction of load-transport
- B65G21/2072—Laterial guidance means
- B65G21/2081—Laterial guidance means for bulk material, e.g. skirts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
- B65G2201/04—Bulk
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2207/00—Indexing codes relating to constructional details, configuration and additional features of a handling device, e.g. Conveyors
- B65G2207/28—Impact protection
Abstract
A return slide for an endless belt conveyor, which includes an endless belt passing around a pair of end rollers, has a wear pad mounted on a base extending traversely beneath the belt for supporting the latter. The top surface of the wear pad is bowed upwardly perpendicular to the path of travel of the belt for reducing wear on the belt edges.
Description
SLIDE FOR CONVEYOR ASSEMBLY
FIELD OF THE INVENTION
[0001] This invention relates to a slide for supporting a conveyor belt, and in particular to a return slide for use with an endless belt conveyor.
BACKGROUND OF THE INVENTION
FIELD OF THE INVENTION
[0001] This invention relates to a slide for supporting a conveyor belt, and in particular to a return slide for use with an endless belt conveyor.
BACKGROUND OF THE INVENTION
[0002] Slides, which have been referred to as idlers, have been used for some time to support conveyor belts. For example, United States Patent No, 5,799,780 issued to Steeb et al (hereinafter Steeb) on September 1, 1998, discloses a slide, referred to therein as a wear bar, for slidably supporting a continuous conveyor belt. The first embodiment of Steeb is a feed idler assembly, which includes a generally U-shaped frame defined by a base, a pair of legs on opposite ends of the base and a pair of shorter intermediate supports between the legs. Plates are attached to the top ends of the legs of the intermediate supports. Wear bars are attached to the tops of the plates. A conveyor belt sliding over the wear bars forms a trough which is useful for conveying materials in the manufacturing and mining industries.
[0003] The fixed wear bars of Steeb are intended to replace rotatable idler rollers.
The Steeb patent discloses two different types of wear bars, namely those used for a feed idler assembly (see Figs 8a to 8c in particular) and one for a return idler assembly (see Figs. 11 a to 11 c). The feed idler wear bar has a flat top surface and tapered side surfaces. The return idler is a flat plate. The Steeb return idlers cause the edges of the conveyor belt to wear, because the belt has a slightly bowed profile upon its return and accordingly contacts the edges of the return idlers.
The Steeb patent discloses two different types of wear bars, namely those used for a feed idler assembly (see Figs 8a to 8c in particular) and one for a return idler assembly (see Figs. 11 a to 11 c). The feed idler wear bar has a flat top surface and tapered side surfaces. The return idler is a flat plate. The Steeb return idlers cause the edges of the conveyor belt to wear, because the belt has a slightly bowed profile upon its return and accordingly contacts the edges of the return idlers.
[0004] An object of the present invention is to provide a solution to the wear problem outlined above with respect to the Steeb apparatus.
SUMMARY OF THE INVENTION
SUMMARY OF THE INVENTION
[0005] According to one aspect the present invention relates to a return slide for use on an endless belt conveyor, which includes a pair of rollers and an endless belt extending around said rollers, said slide comprising a base for extending perpendicular to the path of travel of the endless belt beneath said rollers;
and a wear pad on said base for supporting said belt during travel of the belt beneath said rollers, said wear pad having a top surface which is convex along its length for positioning beneath an endless belt with the pad extending perpendicular to said path of travel.
BRIEF DESCRIPTION OF THE DRAWINGS
and a wear pad on said base for supporting said belt during travel of the belt beneath said rollers, said wear pad having a top surface which is convex along its length for positioning beneath an endless belt with the pad extending perpendicular to said path of travel.
BRIEF DESCRIPTION OF THE DRAWINGS
[0006] The invention is described below in greater detail with reference to the accompanying drawings, which illustrate a preferred embodiment of the invention, and wherein:
Figure 1 is a schematic side view of an endless belt conveyor incorporating the return slide of the present invention.
Figure 2 is a front view of a transition or trough slide assembly for use in the conveyor of Fig. 1;
Figure 3 is a front view of a return slide in accordance with the invention and used in the conveyor of Fig. 1;
Figure 4 is a cross section taken generally along line 4 - 4 of Fig. 3;
Figure 5 is a side view of a hanger for mounting the return slide of Figs. 3 and 4 on a conveyor;
Figure 6 is a top view of a bar for connecting the hanger of Fig. 5 to a conveyor frame;
Figure 7 is an isometric view of a clip for retaining the ends of the return slide in the hanger of Figs. 3 and 4;
Figure 8 is a side view of the hanger of Fig. 5 with the clip of Fig. 7 in the use position; and Figure 9 is an end view of the clip and hanger of Fig. 8.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
Figure 1 is a schematic side view of an endless belt conveyor incorporating the return slide of the present invention.
Figure 2 is a front view of a transition or trough slide assembly for use in the conveyor of Fig. 1;
Figure 3 is a front view of a return slide in accordance with the invention and used in the conveyor of Fig. 1;
Figure 4 is a cross section taken generally along line 4 - 4 of Fig. 3;
Figure 5 is a side view of a hanger for mounting the return slide of Figs. 3 and 4 on a conveyor;
Figure 6 is a top view of a bar for connecting the hanger of Fig. 5 to a conveyor frame;
Figure 7 is an isometric view of a clip for retaining the ends of the return slide in the hanger of Figs. 3 and 4;
Figure 8 is a side view of the hanger of Fig. 5 with the clip of Fig. 7 in the use position; and Figure 9 is an end view of the clip and hanger of Fig. 8.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
[0007] Referring to Fig. 1, the slide of the present invention is intended for use in a conveyor assembly including an inclined endless belt, for receiving material to be conveyed from a chute 2 located above the belt. The belt 1 passes around a tail pulley 3 and a driven head pulley 4. The pulleys 3 and 4 include axles 6 and 7 mounted in pillow block bearings 8 and 9, respectively. The bearings 8 and 9 are mounted on the ends of a frame indicated generally at 10, which includes a plurality of legs 12 and sides 13 (one shown) supported by the legs.
[0008] During travel over the top of the pulleys 3 and 4, the belt 1 is supported by transition slides 14 and troughing slides 15. When passing beneath the pulleys and 4 the belt is supported by return slides 17. Each of the transition and troughing slides 14 and 15 includes a frame defined by a tubular base 18 with plates 19 on the ends thereof for mounting the assembly on the main frame 10 of the conveyor. The top ends of vertical center posts 21 extending upwardly from the middle of the base 18 are interconnected by a crossbar 22. A wear pad 23 is mounted on the crossbar 22. Inclined wear pads 24 are mounted on arms 26 extending outwardly and upwardly from the posts 21. Inclined side posts 27 extend between the base 18 and the arms 26 for supporting the latter. The only difference between the transition and troughing slide assemblies 14 and 15 is the angle of the inclined wear pads 24 with respect to the horizontal. The troughing wear pads and the supporting arms 26 have a greater inclination for forming a deep material conveying trough. The wear pads 23 and 24, which are formed of a Teflon (trade-mark for synthetic fluorine-containing resin) composite, are similar to the pads disclosed by applicant's US Patent No. 6,854,592, issued February 15, 2005.
[0009] With reference to Figs. 3 and 4, each return slide 17 includes an elongated steel base 30 having a generally C-shaped cross section. The base 30 is arcuate, i.e. upwardly bowed or convex when viewed from the front or rear.
A wear pad 31 mounted on the base 30 is also convex when viewed from the front or rear. Longitudinally extending grooves 33 in the sides of the pad 31 receive inverted L-shaped brackets 34 for retaining the pad on the base 30.
the brackets 34 are welded to the sides 35 of the base 30. The use of a return pad 31 with a top surface, which is convex in a direction perpendicular to the direction of travel of the conveyor belt 1 beneath the rollers 3 and 4 substantially reduces wear on the edges of the belt. It will be appreciated that, when passing around the driven roller 4, the belt 1 tends to be concave even after the contents of the belt have been dropped. Thus, when it passes beneath the roller 4, the belt 1 tends to define a shallow, transversely extending inverted trough. The slide accommodate this belt configuration, reducing belt wear. It will also be appreciated that neither the base 30 nor the wear pad 31 need be arcuate. It is merely necessary for the top, belt engaging surface of the pad 31 to be bowed upwardly perpendicular to the path of travel of the belt 1 beneath the rollers 3 and 4.
A wear pad 31 mounted on the base 30 is also convex when viewed from the front or rear. Longitudinally extending grooves 33 in the sides of the pad 31 receive inverted L-shaped brackets 34 for retaining the pad on the base 30.
the brackets 34 are welded to the sides 35 of the base 30. The use of a return pad 31 with a top surface, which is convex in a direction perpendicular to the direction of travel of the conveyor belt 1 beneath the rollers 3 and 4 substantially reduces wear on the edges of the belt. It will be appreciated that, when passing around the driven roller 4, the belt 1 tends to be concave even after the contents of the belt have been dropped. Thus, when it passes beneath the roller 4, the belt 1 tends to define a shallow, transversely extending inverted trough. The slide accommodate this belt configuration, reducing belt wear. It will also be appreciated that neither the base 30 nor the wear pad 31 need be arcuate. It is merely necessary for the top, belt engaging surface of the pad 31 to be bowed upwardly perpendicular to the path of travel of the belt 1 beneath the rollers 3 and 4.
[0010] The base 30 is suspended from the sides 13 of the conveyor frame 10 by hangers 37. As best shown in Fig. 5, each hanger 37 includes a metal plate which is bent to define a large downwardly tapering, vertical top end 40, a central inclined web 42 and a smaller downwardly tapering bottom end 43. A rectangular flange 44 extends inwardly over the web 42 at the top of the hanger. Holes 45 in the flange 44 receive bolts or screws (not shown) for suspending the hangers from the frame sides 2.
[0011] A keyhole slot 46 in the bottom end 43 of the hanger receives one end of a short bar 49, the other end 50 of which supports one end 51 of the slide base 30. In the use position, the outer end 48 of the bar 49 is horizontal, and the inner end 50 is inclined slightly upwardly to match the slope of the base 30. The outer end 48 of the bar 49 includes diametrically opposed flats, i.e. notches 53 for locking the bar in the slot 46.
[0012] Referring to Fig. 7, a novel clip 55 for locking the hanger 37 on the bar 49 includes a generally C or boomerang-shaped thin metal body with a horizontal top arm 56 and an inclined bottom arm 57. A threaded hole 59 in the top arm 56 receives a screw 61, and a hole 62 in the arm 57 at the bottom of the vertical corner 63 of the body receives a rivet 65. When the bar 49 is in the narrow bottom of the keyhole slot 47 and the clip 55 is in position with the top arm extending over the bar, the bar 49 is locked in position and cannot escape from the hanger. When the conveyor is being transported from one location to another, the return slide can be dislodged from the hangers 37, i.e. the bar can bounce out of the slot 47 in the hanger. The clip 55 prevents such accidental release of the slide.
[0013] If the return slide or a portion thereof is to be replaced, the slide can be removed from the hangers 37 by removing the screws 61 and lifting the slide.
The bars 49 cause the clips 55 to pivot around the rivets 65 to release the slide.
The rivets 65 are long enough to permit the clip to rotate, but sufficiently short that when rotated by the bars 49 the bottom arm 57 of the clip remains in position covering the bottom end of the keyhole slot 47. When the bars 49 are inserted in the slots 47 and lowered, the bars engage the arms 57 to cause the clips to rotate to the bar locking positions. The screws 61 are replaced in the holes 59 to lock the return slide in the hangers 37.
The bars 49 cause the clips 55 to pivot around the rivets 65 to release the slide.
The rivets 65 are long enough to permit the clip to rotate, but sufficiently short that when rotated by the bars 49 the bottom arm 57 of the clip remains in position covering the bottom end of the keyhole slot 47. When the bars 49 are inserted in the slots 47 and lowered, the bars engage the arms 57 to cause the clips to rotate to the bar locking positions. The screws 61 are replaced in the holes 59 to lock the return slide in the hangers 37.
[0014] It will be appreciated by those skilled in the art to which the present invention relates that the clip 55 can be used with hangers for suspending straight return slides or even roller assemblies from a conveyor frame.
Claims (11)
1. A return slide for use on an endless belt conveyor, which includes a pair of rollers and an endless belt extending around said rollers, said slide comprising a base for extending perpendicular to the path of travel of the endless belt beneath said rollers; and a wear pad on said base for supporting said belt during travel of the belt beneath said rollers, said wear pad having a top surface which is convex along its length for positioning beneath an endless belt with the pad extending perpendicular to said path of travel.
2. The return slide of claim 1, wherein said base and pad are bowed upwardly along their entire length.
3. The return slide of claim 2 including longitudinally extending grooves in side edges of said pad; and inverted L-shaped brackets connecting said pad to said base.
4. The return slide of claim 3, wherein said base is generally C-shaped, including a top wall and two downwardly extending side walls.
5. The return slide of claim 1 including hangers for suspending the base from a conveyor frame beneath the rollers and belt, each of said hangers including a slot; and a bar for extending into said slot and beneath said base.
6. A hanger assembly used for suspending a return slide from an endless belt conveyor frame comprising a hanger plate having a top end for suspending the hanger from the conveyor frame; a bottom end for supporting one end of a return slide; a keyhole slot in said bottom end for receiving a bar for connecting the hanger plate to one end of a return slide; and a clip for locking said bar in said slot.
7. The hanger assembly of claim 6, including a flange on said top end of the plate for connecting the hanger to the conveyor frame; and an inclined web connecting said top end to said bottom end of the plate.
8. The hanger assembly of claim 6, wherein said bar includes an inner end for supporting one end of said return slide; an outer end for extending through said keyhole slot in the hanger plate; and opposed grooves in said outer end for securing the bar in said slot.
9. The hanger assembly of claim 8, wherein said clip is generally C-shaped including a horizontal top arm for straddling said out end of said bar and a lower arm, whereby, when the clip is placed on the bar and secured to said hanger plate, the bar is locked in said keyhole slot by said top arm of the clip.
10. The hanger assembly of claim 9, wherein the clip is pivotally connected to said hanger plate for rotation between a closed position in which said top arm straddles said bar and an open position in which the lower arm covers a bottom end of said keyhole slot.
11.A hanger assembly used for suspending a return slide from an endless belt conveyor frame comprising a hanger plate having a vertical top end portion; a flange on said top end portion for suspending the hanger from the conveyor frame; a web connected at one end to a lower end of said top portion for extending inwardly towards one end of a conveyor slide; a vertical bottom end portion connected to a second end of said web, a keyhole slot in said bottom end portion for receiving a bar for connecting the hanger plate to one end of a return slide; and a clip for locking said bar in said slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2517766 CA2517766C (en) | 2005-08-31 | 2005-08-31 | Slide for conveyor assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2517766 CA2517766C (en) | 2005-08-31 | 2005-08-31 | Slide for conveyor assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2517766A1 true CA2517766A1 (en) | 2007-02-28 |
| CA2517766C CA2517766C (en) | 2014-12-09 |
Family
ID=37806504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2517766 Expired - Fee Related CA2517766C (en) | 2005-08-31 | 2005-08-31 | Slide for conveyor assembly |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2517766C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7757839B2 (en) | 2005-11-17 | 2010-07-20 | Canglide Inc. | Slides for endless belt conveyors |
| US8453830B2 (en) | 2007-08-22 | 2013-06-04 | Jean-Marc Boudreau | Slide and wear pad for endless belt conveyor |
-
2005
- 2005-08-31 CA CA 2517766 patent/CA2517766C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7757839B2 (en) | 2005-11-17 | 2010-07-20 | Canglide Inc. | Slides for endless belt conveyors |
| US8453830B2 (en) | 2007-08-22 | 2013-06-04 | Jean-Marc Boudreau | Slide and wear pad for endless belt conveyor |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2517766C (en) | 2014-12-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20170831 |