US20070108025A1 - Slides for endless belt conveyors - Google Patents
Slides for endless belt conveyors Download PDFInfo
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- US20070108025A1 US20070108025A1 US11/600,887 US60088706A US2007108025A1 US 20070108025 A1 US20070108025 A1 US 20070108025A1 US 60088706 A US60088706 A US 60088706A US 2007108025 A1 US2007108025 A1 US 2007108025A1
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- Prior art keywords
- pad
- crossbar
- belt
- slide
- extending
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- 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
Definitions
- This invention relates to slides for endless belt conveyors and wear pads for use on slides for endless belt conveyors.
- Slides which have been referred to as idlers have been used for some time to support conveyor belts.
- U.S. Pat. No. 6,854,593 issued to Boudreau et al on Feb. 15, 2005 discloses a slide referred to therein as a pad-type idler, for slidably supporting a continuous conveyor belt.
- the pad-type idlers are supported on a metal support above a base.
- Steeb U.S. Pat. No, 5,799,780 issued to Steeb et al (hereinafter Steeb) on Sep. 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.
- 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. 8 a to 8 c 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 invention relates to a wear pad for use on a slide of an endless track conveyor belt comprising an elongated body having a flat top surface for slidably supporting a conveyor belt during travel of the belt over the top surface between leading and trailing edges of the top surface; and a plurality of grooves in said top surface extending between the leading and trailing edges of the body for discharging liquid falling onto the top surface, whereby drag between the wear pad and the belt is reduced.
- the invention in another aspect, relates to a slide for use on an endless belt conveyor, said slide comprising a crossbar extending perpendicular to the path of travel of the endless belt; and a wear pad on said crossbar for supporting said belt during travel of the belt, said wear pad extending perpendicular to said path of travel; a spacer between said pad and said crossbar for spacing said pad from said crossbar; and retaining means for retaining said pad and spacer on said crossbar.
- the invention in another aspect, relates to a slide for use on an endless belt conveyor, said slide comprising a crossbar extending perpendicular to the path of travel of the endless belt; the top of said crossbar having a hole therethrough; a wear pad on said crossbar for supporting said belt during travel of the belt, said wear pad extending perpendicular to said path of travel and having a threaded hole therethrough, a synthetic fluorine-containing resin bolt in said threaded hole extending through said hole in said crossbar; and locking means for retaining said pad on said crossbar.
- the invention in another aspect, 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.
- the invention in another aspect, relates to 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.
- the invention in another aspect, relates to a hanger assembly used for suspending a return slide from an endless belt conveyor frame
- 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.
- FIG. 1 is a schematic side view of an endless belt conveyor of the type which can employ a wear pad and a slide in accordance with the invention
- FIG. 2 is a front view of a slide assembly incorporating a wear pad in accordance with the invention
- FIG. 3 is an end view of the wear pad of FIG. 2 mounted on a crossbar of the slide assembly of FIG. 2 ;
- FIG. 4 is a front view of the wear pad and crossbar of FIG. 3 ;
- FIG. 5 is a top view of the wear pad of FIGS. 3 and 4 ;
- FIG. 6 is a cross section taken generally along line 6 - 6 of FIG. 5 ;
- FIG. 7 is a front view of another embodiment of a wear pad in accordance with the invention.
- FIG. 8 is a side view of another embodiment of a wear pad in accordance with the invention.
- FIG. 9 is a top view of the wear pad of FIG. 8 ;
- FIG. 10 is a side view of a mounting bolt of the wear pad of FIG. 8 ;
- FIG. 11 is a top view of the mounting bolt of FIG. 10 ;
- FIG. 12 is a partial section bottom view of a section of a crossbar according to the invention onto which the wearbar of FIG. 8 can be mounted;
- FIG. 13 is a partial section view taken along line A-A′ of FIG. 12 ;
- FIG. 14 is a partial-section view taken along line B-B′ of FIG. 13 ;
- FIG. 15 is a bottom view of the crossbar of FIG. 13 ;
- FIG. 16 is a front view of a return slide in accordance with the invention and used in the conveyor of FIG. 1 ;
- FIG. 17 is a cross section taken generally along line 17 - 17 of FIG. 16 ;
- FIG. 18 is a side view of a hanger for mounting the return slide of FIGS. 16 and 17 on a conveyor;
- FIG. 19 is a top view of a bar for connecting the hanger of FIG. 18 to a conveyor frame;
- FIG. 20 is an isometric view of a clip for retaining the ends of the return slide in the hanger of FIGS. 18 and 19 ;
- FIG. 21 is a side view of the hanger of FIG. 18 with the clip of FIG. 20 in the use position;
- FIG. 22 is an end view of the clip and hanger of FIG. 21 .
- the slides and wear pads of the present invention are intended for use in a conveyor assembly of the type 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.
- transition slides 14 and troughing slides 15 When passing beneath the pulleys 3 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 24 in accordance with the present invention is mounted on the crossbar 22 .
- Inclined wear pads 25 are mounted on arms 26 connected to and extending outwardly and upwardly from the ends of the crossbar 22 .
- Inclined side posts 28 extend between the base 18 and the arms 26 for supporting the latter.
- the basic difference between the transition and troughing slide assemblies 14 and 15 is the angle of the inclined wear pads 25 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 24 and 25 which are formed of a Teflon (trade-mark for polytetrafluoroethylene) composite, are similar to the pads disclosed by U.S. Pat. No. 6,854,592, issued Feb. 15, 2005.
- the pad 24 can optionally include cylindrical or frusto-conical wear indicators of the types described in applicant's Canadian Patent Application 2,327,646 and U.S. Pat. No. 6,854,593, respectively and which are incorporated herein by reference.
- the wear pad 24 in accordance with the present invention is basically an elongated rectangular parallelepipedic body with a flat, rectangular bottom surface 29 and a flat rectangular top surface 30 over which the belt 1 slides.
- the top of the front and rear ends 31 (the leading and trailing ends in the direction of belt travel) of the pad 24 are beveled.
- Holes 32 in the pad 24 receive bolts 33 for mounting the pad on the crossbar 22 .
- the pad is spaced apart from the crossbar 22 by a pair of spacers 35 .
- the bolts 33 extend through the spacers 35 and the crossbar 22 .
- Nuts 36 are threaded onto the bottom ends of the bolts 33 beneath the crossbar 22 .
- liquid tends to accumulate on the wear pads 24 .
- the liquid literally sucks the belt 1 against the pads 24 which can slow down or stop the belt.
- Drag on the belt by the liquid is reduced by providing a plurality of grooves or channels 38 extending between the leading and trailing edges (in the direction of belt travel) in the top of each pad 24 .
- Liquid landing on the pads 24 is discharged via the grooves 38 . While the dimensions of the pad 24 and the grooves 38 are not critical, in a thirty inch long pad, three 0.25 by 0.25 inch grooves 38 spaced slightly over an inch apart in the center of the pad are effective. Of course, additional grooves with different dimensions can be used in the top of the pad 24 .
- the wear pad 24 can also be mounted on the arms 26 in place of the wear pads 25 .
- the wear pad of the present invention has been described in a particular environment, i.e. on a specific slide assembly, the wear pad can be used on different endless belt conveyor slides. Moreover, the number of grooves and the dimensions thereof can vary depending upon, inter alia, the belt width and the speed of belt travel over the pads.
- a wear pad 125 in accordance with the present invention, does not include grooves but otherwise has all of the same elements as wear pad 24 shown in FIGS. 3 to 6 and described above and can be used in place of wear pad 24 on conveyor assemblies of the type shown in FIG. 1 and described herein.
- wear pad 32 and crossbar 34 can be used in place of wear pads 24 and 25 and crossbar 22 and arm 26 respectively in a conveyor assembly of the type shown in FIG. 1 and described herein.
- the wear pad 32 has a rectangular main top surface 36 which contacts the belt 4 .
- the top side edges 38 of the wear pad 32 are bevelled while the bottom surface 40 is rectangular.
- Two threaded holes 42 are provided in the wear pad 32 for receiving a bolt 44 .
- the bolt 44 is made from Teflon suitable for use in the food industry.
- the bolt 44 includes a threaded section 46 and a cylindrical head 46 .
- the base 48 includes a bore 50 therethrough for receiving a cotter pin 52 .
- the wear pad 32 can optionally include cylindrical or frusto-conical (indicated by 33 ) wear indicators of the types described in applicant's Canadian patent no. 2,327,646 and U.S. Pat. No. 6,854,593 respectively and which are incorporated herein by reference.
- the crossbar 34 is made from steel and is generally c-shaped in cross section and includes two holes 54 (one toward each end of the crossbar 34 in a similar fashion to holes 30 in crossbar 10 ) for receiving bolts 44 .
- a bolt 44 is screwed into each threaded hole 42 .
- the wear pad 32 is then mounted on the crossbar 34 by dropping the base 48 of the bolts 44 into the holes 54 .
- a cotter pin 52 inserted into each bore 50 prevents the wear pad 32 from being removed from the crossbar 34 .
- Each return slide 17 in accordance with the invention, can be used with a conveyor assembly of the type described with reference to FIG. 1 .
- Each return slide 17 includes an elongated steel base 30 having a generally C-shaped cross section.
- the base 130 is arcuate, i.e. upwardly bowed or convex when viewed from the front or rear.
- a wear pad 131 mounted on the base 130 is also convex when viewed from the front or rear.
- Longitudinally extending grooves 133 in the sides of the pad 131 receive inverted L-shaped brackets 134 for retaining the pad on the base 130 .
- the brackets 134 are welded to the sides 135 of the base 130 .
- a return pad 131 with a top surface which is convex in a direction perpendicular to the direction of travel of the conveyor belt 1 beneath the pulleys 3 and 4 substantially reduces wear on the edges of the belt. It will be appreciated that, when passing around the driven pulley 4 , the belt 1 tends to be concave even after the contents of the belt have been dropped. Thus, when it passes beneath the pulley 4 , the belt 1 tends to define a shallow, transversely extending inverted trough. The slide 131 accommodates this belt configuration, reducing belt wear. It will also be appreciated that neither the base 130 nor the wear pad 131 need be arcuate. It is merely necessary for the top, belt engaging surface of the pad 131 to be bowed upwardly perpendicular to the path of travel of the belt 1 beneath the pulleys 3 and 4 .
- each hanger 137 includes a metal plate which is bent to define a large downwardly tapering, vertical top end 140 , a central inclined web 142 and a smaller downwardly tapering bottom end 143 .
- a rectangular flange 144 extends inwardly over the web 142 at the top of the hanger. Holes 145 in the flange 144 receive bolts or screws (not shown) for suspending the hangers from the frame sides 2 .
- a keyhole slot 147 in the bottom end 143 of the hanger receives one end 148 of a short bar 149 , the other end 150 of which supports one end 151 of the slide base 130 .
- the outer end 148 of the bar 149 is horizontal, and the inner end 150 is inclined slightly upwardly to match the slope of the base 130 .
- the outer end 148 of the bar 149 includes diametrically opposed flats, i.e. notches 153 for locking the bar in the slot 146 .
- a novel clip 55 for locking the hanger 137 on the bar 149 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
- a hole 62 in the arm 57 at the bottom of the vertical corner 63 of the body receives a rivet 65 .
- the return slide can be dislodged from the hangers 137 , i.e. the bar 148 can bounce out of the slot 147 in the hanger.
- the clip 55 prevents such accidental release of the slide.
- the slide can be removed from the hangers 137 by removing the screws 61 and lifting the slide.
- the bars 149 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 149 the bottom arm 57 of the clip remains in position covering the bottom end of the keyhole slot 147 .
- the bars 149 are inserted in the slots 147 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 137 .
- the clip 55 can be used with hangers for suspending straight return slides or even roller assemblies from a conveyor frame.
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Abstract
Description
- This application claims priority to Canadian Patent Application No. 2,527,295, filed on Nov. 17, 2005 and Canadian Patent Application No. 2,552,065, filed on Jul. 14, 2006, the contents of which are hereby incorporated by reference.
- 1. Field of the Invention
- This invention relates to slides for endless belt conveyors and wear pads for use on slides for endless belt conveyors.
- 2. Discussion of the Prior Art
- Slides, which have been referred to as idlers have been used for some time to support conveyor belts. For example, U.S. Pat. No. 6,854,593 issued to Boudreau et al on Feb. 15, 2005, discloses a slide referred to therein as a pad-type idler, for slidably supporting a continuous conveyor belt. The pad-type idlers are supported on a metal support above a base. When conveying a liquid-containing substance, e.g. in the food processing industry, liquid falls onto the slides where it accumulates. The presence of a liquid between the belt and the slides results in drag (skin friction drag) between the belt and the slides which causes the belt to slow down or stop.
- U.S. Pat. No, 5,799,780 issued to Steeb et al (hereinafter Steeb) on Sep. 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.
- 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. 8 a to 8 c in particular) and one for a return idler assembly (seeFIGS. 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. - In one aspect, the invention relates to a wear pad for use on a slide of an endless track conveyor belt comprising an elongated body having a flat top surface for slidably supporting a conveyor belt during travel of the belt over the top surface between leading and trailing edges of the top surface; and a plurality of grooves in said top surface extending between the leading and trailing edges of the body for discharging liquid falling onto the top surface, whereby drag between the wear pad and the belt is reduced.
- In another aspect, the invention relates to a slide for use on an endless belt conveyor, said slide comprising a crossbar extending perpendicular to the path of travel of the endless belt; and a wear pad on said crossbar for supporting said belt during travel of the belt, said wear pad extending perpendicular to said path of travel; a spacer between said pad and said crossbar for spacing said pad from said crossbar; and retaining means for retaining said pad and spacer on said crossbar.
- In another aspect, the invention relates to a slide for use on an endless belt conveyor, said slide comprising a crossbar extending perpendicular to the path of travel of the endless belt; the top of said crossbar having a hole therethrough; a wear pad on said crossbar for supporting said belt during travel of the belt, said wear pad extending perpendicular to said path of travel and having a threaded hole therethrough, a synthetic fluorine-containing resin bolt in said threaded hole extending through said hole in said crossbar; and locking means for retaining said pad on said crossbar.
- In another aspect, the 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.
- In another aspect, the invention relates to 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.
- In another aspect, the invention relates to 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.
- The invention is described below in greater detail with reference to the accompanying drawings, wherein:
-
FIG. 1 is a schematic side view of an endless belt conveyor of the type which can employ a wear pad and a slide in accordance with the invention; -
FIG. 2 is a front view of a slide assembly incorporating a wear pad in accordance with the invention; -
FIG. 3 is an end view of the wear pad ofFIG. 2 mounted on a crossbar of the slide assembly ofFIG. 2 ; -
FIG. 4 is a front view of the wear pad and crossbar ofFIG. 3 ; -
FIG. 5 is a top view of the wear pad ofFIGS. 3 and 4 ; -
FIG. 6 is a cross section taken generally along line 6-6 ofFIG. 5 ; -
FIG. 7 is a front view of another embodiment of a wear pad in accordance with the invention; -
FIG. 8 is a side view of another embodiment of a wear pad in accordance with the invention; -
FIG. 9 is a top view of the wear pad ofFIG. 8 ; -
FIG. 10 is a side view of a mounting bolt of the wear pad ofFIG. 8 ; -
FIG. 11 is a top view of the mounting bolt ofFIG. 10 ; -
FIG. 12 is a partial section bottom view of a section of a crossbar according to the invention onto which the wearbar ofFIG. 8 can be mounted; -
FIG. 13 is a partial section view taken along line A-A′ ofFIG. 12 ; -
FIG. 14 is a partial-section view taken along line B-B′ ofFIG. 13 ; -
FIG. 15 is a bottom view of the crossbar ofFIG. 13 ; -
FIG. 16 is a front view of a return slide in accordance with the invention and used in the conveyor ofFIG. 1 ; -
FIG. 17 is a cross section taken generally along line 17-17 ofFIG. 16 ; -
FIG. 18 is a side view of a hanger for mounting the return slide ofFIGS. 16 and 17 on a conveyor; -
FIG. 19 is a top view of a bar for connecting the hanger ofFIG. 18 to a conveyor frame; -
FIG. 20 is an isometric view of a clip for retaining the ends of the return slide in the hanger ofFIGS. 18 and 19 ; -
FIG. 21 is a side view of the hanger ofFIG. 18 with the clip ofFIG. 20 in the use position; and -
FIG. 22 is an end view of the clip and hanger ofFIG. 21 . - Referring to
FIG. 1 , the slides and wear pads of the present invention are intended for use in a conveyor assembly of the type including an inclined endless belt for receiving material to be conveyed from achute 2 located above the belt. Thebelt 1 passes around atail pulley 3 and a drivenhead pulley 4. Thepulleys axles pillow block bearings bearings legs 12 and sides 13 (one shown) supported by the legs. - During travel over the top of the
pulleys belt 1 is supported bytransition slides 14 andtroughing slides 15. When passing beneath thepulleys return slides 17. Each of the transition andtroughing slides tubular base 18 withplates 19 on the ends thereof for mounting the assembly on themain frame 10 of the conveyor. The top ends ofvertical center posts 21 extending upwardly from the middle of thebase 18 are interconnected by acrossbar 22. - A
wear pad 24 in accordance with the present invention is mounted on thecrossbar 22.Inclined wear pads 25 are mounted onarms 26 connected to and extending outwardly and upwardly from the ends of thecrossbar 22. Inclined side posts 28 extend between the base 18 and thearms 26 for supporting the latter. The basic difference between the transition and troughingslide assemblies inclined wear pads 25 with respect to the horizontal. The troughing wear pads and the supportingarms 26 have a greater inclination for forming a deep material conveying trough. Thewear pads - The
pad 24 can optionally include cylindrical or frusto-conical wear indicators of the types described in applicant's Canadian Patent Application 2,327,646 and U.S. Pat. No. 6,854,593, respectively and which are incorporated herein by reference. - Referring to FIGS. 2 to 6, the
wear pad 24 in accordance with the present invention is basically an elongated rectangular parallelepipedic body with a flat,rectangular bottom surface 29 and a flat rectangulartop surface 30 over which thebelt 1 slides. The top of the front and rear ends 31 (the leading and trailing ends in the direction of belt travel) of thepad 24 are beveled.Holes 32 in thepad 24 receivebolts 33 for mounting the pad on thecrossbar 22. The pad is spaced apart from thecrossbar 22 by a pair ofspacers 35. Thebolts 33 extend through thespacers 35 and thecrossbar 22.Nuts 36 are threaded onto the bottom ends of thebolts 33 beneath thecrossbar 22. - As mentioned above, when conveying liquid-containing material, e.g. in the food processing industry, liquid tends to accumulate on the
wear pads 24. The liquid literally sucks thebelt 1 against thepads 24 which can slow down or stop the belt. Drag on the belt by the liquid is reduced by providing a plurality of grooves orchannels 38 extending between the leading and trailing edges (in the direction of belt travel) in the top of eachpad 24. Liquid landing on thepads 24 is discharged via thegrooves 38. While the dimensions of thepad 24 and thegrooves 38 are not critical, in a thirty inch long pad, three 0.25 by 0.25inch grooves 38 spaced slightly over an inch apart in the center of the pad are effective. Of course, additional grooves with different dimensions can be used in the top of thepad 24. - The
wear pad 24 can also be mounted on thearms 26 in place of thewear pads 25. - It will be appreciated that while the wear pad of the present invention has been described in a particular environment, i.e. on a specific slide assembly, the wear pad can be used on different endless belt conveyor slides. Moreover, the number of grooves and the dimensions thereof can vary depending upon, inter alia, the belt width and the speed of belt travel over the pads.
- Referring to
FIG. 7 , in another embodiment, awear pad 125, in accordance with the present invention, does not include grooves but otherwise has all of the same elements aswear pad 24 shown in FIGS. 3 to 6 and described above and can be used in place ofwear pad 24 on conveyor assemblies of the type shown inFIG. 1 and described herein. - Referring to FIGS. 8 to 14, in another embodiment, wear
pad 32 andcrossbar 34 can be used in place ofwear pads crossbar 22 andarm 26 respectively in a conveyor assembly of the type shown inFIG. 1 and described herein. - The
wear pad 32 has a rectangular maintop surface 36 which contacts thebelt 4. The top side edges 38 of thewear pad 32 are bevelled while thebottom surface 40 is rectangular. Two threadedholes 42 are provided in thewear pad 32 for receiving abolt 44. Thebolt 44 is made from Teflon suitable for use in the food industry. Thebolt 44 includes a threadedsection 46 and acylindrical head 46. Thebase 48 includes abore 50 therethrough for receiving acotter pin 52. - The
wear pad 32 can optionally include cylindrical or frusto-conical (indicated by 33) wear indicators of the types described in applicant's Canadian patent no. 2,327,646 and U.S. Pat. No. 6,854,593 respectively and which are incorporated herein by reference. - The
crossbar 34 is made from steel and is generally c-shaped in cross section and includes two holes 54 (one toward each end of thecrossbar 34 in a similar fashion toholes 30 in crossbar 10) for receivingbolts 44. - To mount the
wear pad 32, abolt 44 is screwed into each threadedhole 42. - The
wear pad 32 is then mounted on thecrossbar 34 by dropping thebase 48 of thebolts 44 into theholes 54. Acotter pin 52 inserted into each bore 50 prevents thewear pad 32 from being removed from thecrossbar 34. - With reference to
FIGS. 16 and 17 , return slides 17 in accordance with the invention, can be used with a conveyor assembly of the type described with reference toFIG. 1 . Each return slide 17 includes anelongated steel base 30 having a generally C-shaped cross section. Thebase 130 is arcuate, i.e. upwardly bowed or convex when viewed from the front or rear. Awear pad 131 mounted on thebase 130 is also convex when viewed from the front or rear.Longitudinally extending grooves 133 in the sides of thepad 131 receive inverted L-shapedbrackets 134 for retaining the pad on thebase 130. Thebrackets 134 are welded to thesides 135 of thebase 130. The use of areturn pad 131 with a top surface, which is convex in a direction perpendicular to the direction of travel of theconveyor belt 1 beneath thepulleys pulley 4, thebelt 1 tends to be concave even after the contents of the belt have been dropped. Thus, when it passes beneath thepulley 4, thebelt 1 tends to define a shallow, transversely extending inverted trough. Theslide 131 accommodates this belt configuration, reducing belt wear. It will also be appreciated that neither the base 130 nor thewear pad 131 need be arcuate. It is merely necessary for the top, belt engaging surface of thepad 131 to be bowed upwardly perpendicular to the path of travel of thebelt 1 beneath thepulleys - The
base 130 is suspended from thesides 13 of theconveyor frame 10 byhangers 137. As best shown inFIG. 18 , eachhanger 137 includes a metal plate which is bent to define a large downwardly tapering, verticaltop end 140, a centralinclined web 142 and a smaller downwardly taperingbottom end 143. Arectangular flange 144 extends inwardly over theweb 142 at the top of the hanger.Holes 145 in theflange 144 receive bolts or screws (not shown) for suspending the hangers from the frame sides 2. - A
keyhole slot 147 in thebottom end 143 of the hanger receives oneend 148 of ashort bar 149, theother end 150 of which supports oneend 151 of theslide base 130. In the use position, theouter end 148 of thebar 149 is horizontal, and theinner end 150 is inclined slightly upwardly to match the slope of thebase 130. Theouter end 148 of thebar 149 includes diametrically opposed flats, i.e.notches 153 for locking the bar in the slot 146. - Referring to
FIG. 20 , anovel clip 55 for locking thehanger 137 on thebar 149 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 ascrew 61, and a hole 62 in the arm 57 at the bottom of the vertical corner 63 of the body receives arivet 65. When thebar 149 is in the narrow bottom of thekeyhole slot 147 and theclip 55 is in position with the top arm 56 extending over the bar, thebar 149 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 thehangers 137, i.e. thebar 148 can bounce out of theslot 147 in the hanger. Theclip 55 prevents such accidental release of the slide. - If the return slide or a portion thereof is to be replaced, the slide can be removed from the
hangers 137 by removing thescrews 61 and lifting the slide. Thebars 149 cause theclips 55 to pivot around therivets 65 to release the slide. Therivets 65 are long enough to permit the clip to rotate, but sufficiently short that when rotated by thebars 149 the bottom arm 57 of the clip remains in position covering the bottom end of thekeyhole slot 147. When thebars 149 are inserted in theslots 147 and lowered, the bars engage the arms 57 to cause the clips to rotate to the bar locking positions. Thescrews 61 are replaced in the holes 59 to lock the return slide in thehangers 137. - 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 (18)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/466,791 US20090277751A1 (en) | 2005-11-17 | 2009-05-15 | Slides for endless belt conveyors |
US12/466,812 US7757839B2 (en) | 2005-11-17 | 2009-05-15 | Slides for endless belt conveyors |
US12/794,232 US20100236899A1 (en) | 2005-11-17 | 2010-06-04 | Slides for endless belt conveyors |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA2,527,295 | 2005-11-17 | ||
CA 2527295 CA2527295A1 (en) | 2005-11-17 | 2005-11-17 | Slide for conveyor assembly |
CA 2552065 CA2552065A1 (en) | 2006-07-14 | 2006-07-14 | Wear pad endless belt conveyor slide |
CA2,552,065 | 2006-07-14 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/466,791 Division US20090277751A1 (en) | 2005-11-17 | 2009-05-15 | Slides for endless belt conveyors |
US12/466,812 Division US7757839B2 (en) | 2005-11-17 | 2009-05-15 | Slides for endless belt conveyors |
Publications (1)
Publication Number | Publication Date |
---|---|
US20070108025A1 true US20070108025A1 (en) | 2007-05-17 |
Family
ID=37744751
Family Applications (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/600,887 Abandoned US20070108025A1 (en) | 2005-11-17 | 2006-11-17 | Slides for endless belt conveyors |
US12/466,791 Abandoned US20090277751A1 (en) | 2005-11-17 | 2009-05-15 | Slides for endless belt conveyors |
US12/466,812 Expired - Fee Related US7757839B2 (en) | 2005-11-17 | 2009-05-15 | Slides for endless belt conveyors |
US12/794,232 Abandoned US20100236899A1 (en) | 2005-11-17 | 2010-06-04 | Slides for endless belt conveyors |
Family Applications After (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/466,791 Abandoned US20090277751A1 (en) | 2005-11-17 | 2009-05-15 | Slides for endless belt conveyors |
US12/466,812 Expired - Fee Related US7757839B2 (en) | 2005-11-17 | 2009-05-15 | Slides for endless belt conveyors |
US12/794,232 Abandoned US20100236899A1 (en) | 2005-11-17 | 2010-06-04 | Slides for endless belt conveyors |
Country Status (3)
Country | Link |
---|---|
US (4) | US20070108025A1 (en) |
EP (1) | EP1787925A3 (en) |
AU (1) | AU2006236068A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10683178B2 (en) | 2016-09-12 | 2020-06-16 | Vermeer Manufacturing Company | Systems and methods for processing earthen slurries |
CN115465623A (en) * | 2022-07-22 | 2022-12-13 | 山东尚牛网络科技有限公司 | Double-rail hanging device for clothing production and using method thereof |
US11666921B2 (en) * | 2019-06-10 | 2023-06-06 | U.S. Mining, Inc. | Systems and methods for crushing clay, transporting clay, and processing clay |
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US8453830B2 (en) * | 2007-08-22 | 2013-06-04 | Jean-Marc Boudreau | Slide and wear pad for endless belt conveyor |
CA2888898A1 (en) | 2012-10-25 | 2014-05-01 | Solus Industrial Innovations, Llc | Device and method for controlling the wear of the rail of a conveyor |
CN103056141B (en) * | 2013-01-24 | 2015-05-27 | 徐宁 | Dust settling device of belt conveyor for coal |
US9808904B2 (en) | 2015-12-28 | 2017-11-07 | Dean Foods Company | Chain reconditioning devices and methods |
WO2018165219A1 (en) | 2017-03-06 | 2018-09-13 | Joy Mm Delaware, Inc. | Drive shaft and sprockets for chain conveyor |
DE102017129293A1 (en) | 2017-12-08 | 2019-06-13 | Khs Gmbh | transport device |
US10858193B1 (en) * | 2017-12-21 | 2020-12-08 | Nercon Eng. & Mfg., Inc. | Toolless removable wear strip and/or guide rail for a conveyor |
CA3146838A1 (en) | 2021-01-28 | 2022-07-28 | Joy Global Underground Mining Llc | Chain conveyor and link for same |
CA3238532A1 (en) * | 2021-10-13 | 2023-04-20 | Stephenson Technologies Inc. | Conveyor system for wheeled structures and improvements thereto |
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US11666921B2 (en) * | 2019-06-10 | 2023-06-06 | U.S. Mining, Inc. | Systems and methods for crushing clay, transporting clay, and processing clay |
CN115465623A (en) * | 2022-07-22 | 2022-12-13 | 山东尚牛网络科技有限公司 | Double-rail hanging device for clothing production and using method thereof |
Also Published As
Publication number | Publication date |
---|---|
EP1787925A2 (en) | 2007-05-23 |
EP1787925A3 (en) | 2007-06-27 |
AU2006236068A1 (en) | 2007-05-31 |
US20090277751A1 (en) | 2009-11-12 |
US20090277757A1 (en) | 2009-11-12 |
US7757839B2 (en) | 2010-07-20 |
US20100236899A1 (en) | 2010-09-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: CANGLIDE INC., CANADA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:BOUDREAU, JEAN MARC;REEL/FRAME:020958/0847 Effective date: 20070713 Owner name: CANGLIDE INC., CANADA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:BOUDREAU, JEAN MARC;REEL/FRAME:020958/0912 Effective date: 20061207 Owner name: CANGLIDE INC.,CANADA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:BOUDREAU, JEAN MARC;REEL/FRAME:020958/0847 Effective date: 20070713 Owner name: CANGLIDE INC.,CANADA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:BOUDREAU, JEAN MARC;REEL/FRAME:020958/0912 Effective date: 20061207 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |