CA1234066A - Chain conveyor - Google Patents
Chain conveyorInfo
- Publication number
- CA1234066A CA1234066A CA000490326A CA490326A CA1234066A CA 1234066 A CA1234066 A CA 1234066A CA 000490326 A CA000490326 A CA 000490326A CA 490326 A CA490326 A CA 490326A CA 1234066 A CA1234066 A CA 1234066A
- Authority
- CA
- Canada
- Prior art keywords
- conveyor
- chute
- chain
- flight
- magnetic
- 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.)
- Expired
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
- B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
-
- 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
- B65G19/00—Conveyors comprising an impeller or a series of impellers carried by an endless traction element and arranged to move articles or materials over a supporting surface or underlying material, e.g. endless scraper conveyors
- B65G19/18—Details
- B65G19/22—Impellers, e.g. push-plates, scrapers; Guiding means therefor
-
- 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
- B65G19/00—Conveyors comprising an impeller or a series of impellers carried by an endless traction element and arranged to move articles or materials over a supporting surface or underlying material, e.g. endless scraper conveyors
- B65G19/18—Details
- B65G19/28—Troughs, channels, or conduits
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Non-Mechanical Conveyors (AREA)
- Pusher Or Impeller Conveyors (AREA)
Abstract
Abstract In a chain conveyor, in particular in a chain con-veyor of the swinging type, comprising flight attachments movably supported on at least one chain and sliding within a conveyor chute , the flight attach-ments are, at least in places, formed of material being conductive for the magnetic flux or are of per-manently magnetic design, while the bottom of the conveyor chute is equipped with magnets or is formed of a material being conductive for the magnetic flux at least within the area of deviations from a straight-lined conveying direction. Beneath the bottom of the conveyor chute there can be arranged also permanent magnets or electro magnets having their pole shoes arranged in proximity of the lateral ends or the flight attachments sliding thereover. In this manner, the flight attachments are maintained within their path of travel within the conveyor chute without using mechanical guide elements which can cause jamming of the material to be conveyed,
Description
1~34~
The invention refers to a chain conveyor, in particular of the swinging type, comprising flight attach-ments movably supported on at least one chain and sliding within a conveyor chute. Such chain conveyors are, for example,used in connection with cutting machines for the removal of excavated minerals or rock, respectively. It is known to arrange such chain conveyors within the rear area of a cutting machine, noting that the free discharge end of the conveyor must, in dependence on the position of the drift advancing machine, be correspondingly lifted, lowered or swivelled to allow transfer onto a further con-veyor means. The known chain conveyors comprise at least one chain on which flight attachments are movably supported.
The flight attachments slide within a conveyor chute and by driving the chains the material to be transported is shifted by the flight attachments from the supply end to the discharge end. To allow swinging movement of parts of such a chain conveyor and in particular for lifting or lowering, a guide means for the flight attachments is provided in those partial areas of the conveyor in which the conve~or deviates from the straight conveying direction, so that lifting or mis-running of the flight attachment within the respective partial area is prevented. Such guid~
means are sub~ect to a strong wear and there exists the risk that conveyed material becomes jammed between guide means and flight attachments, whereby -the conveyor chain can be blocked or the chain can be ruptured. When lifting 123~0~6 the conveyor there is a risk that the flight attachments are lifted off the lowermost area of the conveyor chute, so that the conveyor efficiency will be insufficient and conveyed material accumulates at the lowermost area of the conveyor chute. Similar problems are encountered at the area of the stretching carriage, provided in most cases for the chain tension.
The present invention provides a guide means for the flight attachments for such a chain conveyor, which guide means is subject to a lower wear and reduces the risk that the chain becomes ruptured or the flight attachments become jammed.
According to the invention the flight attachments are, at least in places, formed of a material conductive for the magnetic flux or permanently magnetic and the bottom of the conveyor chute is equipped with magnets or is formed of a material conductive for the magnetic flux at least within the area of concave elevation deviations of the bottom of the chute from a straight-lined con-veying direction in order to prevent the flight attachments from lifting from the bottom of the chute. Due to the flight attach-ments being formed of a material conductive for the magnetic flux, these flight attachments can be guided on the bottom of the conveyor chute by applying a magnetic force beneath or, respec-tively, within the bottom of the conveyor chute, so that any lifting-off of the flight attachments is, in particular when lifting the conveyor, prevented. The arrangement can, by revert-ing this measure, also be such that the flight attachments them-selves are permanently magnetic and are thus maintained in con-tact with the bottom, being conductive for the magnetic flux, of the conveyor chute and guided along sald bottom.
In a particularly simple manner the arrangement is such that the bottom has electromagnets within the area of deviations from a straight-lined conveying direction, so that the force required for a correct guided effect can be adapted to the exist-ing requirements. In particular for reliably guiding the flight attachments also in case of a lateral swinging movement, the ,.~ . .
~ :, ~ - 2 -34~
arrangement is preferably such that the poles or, respectively, the pole shoes of the magnets are arranged on the bo-ttom of the conveyor chain and in proximity of the lateral ends of the fligh-t attachments sliding thereover. In this case, the position of the magnets at the bottom of the conveyor chute can be adjusted in correspondence with the lateral swinging movemant, so that the motion of the flight attachments is improved within the swinging area.
In addition to these measures, only individual flight attachments can, in a particularly simple manner, be designed as permanently magnetic cleaning scrapers, which results in a sim-plification. In this case it is even sufficient to design, for example, each fourth flight attachment as a permanently magnetic cleaning scraper.
In a particular aspect thereof the present invention provides a chain conveyor comprising: at least one chain carrying a plurality of longitudinally spaced-apart conveyor flights; a conveyor chute in which the chain and conveyor flights move, the chute having a rigid bottom along the upper surface of which the conveyor flights slide in order to convey material along the chute, the bottom having at least one longitudinal portion which is concave upwardly due to vertical deviations of the chute from straight line conveying directions with the result that the chain and conveyor flights tend to lift off the bottom of the chute;
and means for magnetically attracting the conveyor flights to the concave bottom portion of the chute so as to remain in sliding engagement therewith. Suitably said magnetic means is consti-tuted by said conveyor flights being conductive of magnetic fluxand by magnets located adjacent the lower surface of said concave bottom portion of said chute and opposite said conveyor flights.
Desirably said magnetic means is constituted by said conveyor flights being permanently magnetic and by said concave bottom portion of said chute being conductive of magnetic flux.
.
..
~234C)66 The invention is further illustrated with reference to embodiments shown in the accompanying drawings, in which:-~; . .
- 3a-~234()6~
In the drawing, Figure 1 shows the rear partial area of a cutting machine together with a chain conveyor in a side elevation, Figure 2 shows a top plan view of the embodiment according to Figure 1 in the sense of the arrow II of Figure 1, Figure 3 shows in a side elevation a partial area of a chain conveyor according to the in-vention, Figure 4 shows a section along the line IV-IV of Figure 3 and Figure 5 shows a modified construction of the flight attachments in a representation analogous to that of Figure 4.
In the arrangement according to Figure 1, the rear portion of a cutting machine is designated by 1. ~ chain conveyor 2 transports the material cut by the cutting machine upwardly in direction to a discharge location 3.
The drive means for the chain being designated by 4. The discharge location 3 is height-adjustable in direction of the twin arrow 5 and, as can be taken from the top plan view according to Figure 2!can be laterally swung in the sense of the twin arrow 6. The flight att~chments 7 and the chain 8 for the chain conveyor can be seen in Figure 2. The adjustingcylinder Eor swinging movement in height direction is designated by 9 in Figure 1. In case of a correspondingly great swinging movement, a concave area as shown in Figure 3 can result in the conveying direction which is indicated by arrow 10.
In the representation according to Figure 3, the flight attachment is again designated by 7 and the con-~.23~06~
veyor chain is designated by 8. The tension force F isactive in conveying direction indieated by the arrow 10 and results in a vertical foree Fv acting within the concave area 11 of the conveyor in the sense of the arrow 12. This vertical force tends to lift the flight attachments away from the bottom 13 of the conveyor ehute 14 within said area 11, so that eonveying effieieney would be impaired. In usual eonveyor ehutes are thus provided within the area 11 positive guide means whieh are indi-eated by 15 in Figure 5. Now and aeeording to the inven-tion,magnets 16 are arranged within or beneath the bottom 13 of the conveyor chute 14 at least within the area 11. The magnetie attractive foree exerted on the flight attaehments 7 counteracts the vertical force Fv and effects that the flight attachments 7 still slide on the bottom 13 of the conveyor chute 14.
Even if the conveyor chute has a lateral bend in a horizontal plane, the oblique tension of the conveyor chain 8 can result in lifting the flight attachment 7 off the bottom 13 of lthe eonveyor ehute 14, but also in this case the flight attachments 7 are reliably well guided on the bottom 13 on account of the magnets 16 or,respective-ly,17 or on account of the permanently magnetic design of the flight attachments.
The magnets 16 can, as is shown in Figure 4, be formed of permanent magnets, the flight ~ttachments 7 then being formed of a material being conductive for the magnetic flux.
~23~0~,6 ~ 6 --In place of the permanent magnets16 of Figure 4, also electromagnets 17 shown in the lower portion of Figure 5 can be used.
In the embodiment according to Figure 5, there are provided flight attachments comprising permanently ~ag-netic end portions 18. These flight attachments 7 slide on the upper side of the bottom 13 and are pressed against the bottom 13 by a magnetic force Fm in case this bottom consists of a material being conductive for the magnetic flux. Within the area of a bend of the conveyor, the bottom 13 can be formed of a diamagnetic material and the magnetic attractive force can be increased by using electromagnets 17, so that any mis_running or lifting movement of the flight attachments 7 is counteracted.
The invention refers to a chain conveyor, in particular of the swinging type, comprising flight attach-ments movably supported on at least one chain and sliding within a conveyor chute. Such chain conveyors are, for example,used in connection with cutting machines for the removal of excavated minerals or rock, respectively. It is known to arrange such chain conveyors within the rear area of a cutting machine, noting that the free discharge end of the conveyor must, in dependence on the position of the drift advancing machine, be correspondingly lifted, lowered or swivelled to allow transfer onto a further con-veyor means. The known chain conveyors comprise at least one chain on which flight attachments are movably supported.
The flight attachments slide within a conveyor chute and by driving the chains the material to be transported is shifted by the flight attachments from the supply end to the discharge end. To allow swinging movement of parts of such a chain conveyor and in particular for lifting or lowering, a guide means for the flight attachments is provided in those partial areas of the conveyor in which the conve~or deviates from the straight conveying direction, so that lifting or mis-running of the flight attachment within the respective partial area is prevented. Such guid~
means are sub~ect to a strong wear and there exists the risk that conveyed material becomes jammed between guide means and flight attachments, whereby -the conveyor chain can be blocked or the chain can be ruptured. When lifting 123~0~6 the conveyor there is a risk that the flight attachments are lifted off the lowermost area of the conveyor chute, so that the conveyor efficiency will be insufficient and conveyed material accumulates at the lowermost area of the conveyor chute. Similar problems are encountered at the area of the stretching carriage, provided in most cases for the chain tension.
The present invention provides a guide means for the flight attachments for such a chain conveyor, which guide means is subject to a lower wear and reduces the risk that the chain becomes ruptured or the flight attachments become jammed.
According to the invention the flight attachments are, at least in places, formed of a material conductive for the magnetic flux or permanently magnetic and the bottom of the conveyor chute is equipped with magnets or is formed of a material conductive for the magnetic flux at least within the area of concave elevation deviations of the bottom of the chute from a straight-lined con-veying direction in order to prevent the flight attachments from lifting from the bottom of the chute. Due to the flight attach-ments being formed of a material conductive for the magnetic flux, these flight attachments can be guided on the bottom of the conveyor chute by applying a magnetic force beneath or, respec-tively, within the bottom of the conveyor chute, so that any lifting-off of the flight attachments is, in particular when lifting the conveyor, prevented. The arrangement can, by revert-ing this measure, also be such that the flight attachments them-selves are permanently magnetic and are thus maintained in con-tact with the bottom, being conductive for the magnetic flux, of the conveyor chute and guided along sald bottom.
In a particularly simple manner the arrangement is such that the bottom has electromagnets within the area of deviations from a straight-lined conveying direction, so that the force required for a correct guided effect can be adapted to the exist-ing requirements. In particular for reliably guiding the flight attachments also in case of a lateral swinging movement, the ,.~ . .
~ :, ~ - 2 -34~
arrangement is preferably such that the poles or, respectively, the pole shoes of the magnets are arranged on the bo-ttom of the conveyor chain and in proximity of the lateral ends of the fligh-t attachments sliding thereover. In this case, the position of the magnets at the bottom of the conveyor chute can be adjusted in correspondence with the lateral swinging movemant, so that the motion of the flight attachments is improved within the swinging area.
In addition to these measures, only individual flight attachments can, in a particularly simple manner, be designed as permanently magnetic cleaning scrapers, which results in a sim-plification. In this case it is even sufficient to design, for example, each fourth flight attachment as a permanently magnetic cleaning scraper.
In a particular aspect thereof the present invention provides a chain conveyor comprising: at least one chain carrying a plurality of longitudinally spaced-apart conveyor flights; a conveyor chute in which the chain and conveyor flights move, the chute having a rigid bottom along the upper surface of which the conveyor flights slide in order to convey material along the chute, the bottom having at least one longitudinal portion which is concave upwardly due to vertical deviations of the chute from straight line conveying directions with the result that the chain and conveyor flights tend to lift off the bottom of the chute;
and means for magnetically attracting the conveyor flights to the concave bottom portion of the chute so as to remain in sliding engagement therewith. Suitably said magnetic means is consti-tuted by said conveyor flights being conductive of magnetic fluxand by magnets located adjacent the lower surface of said concave bottom portion of said chute and opposite said conveyor flights.
Desirably said magnetic means is constituted by said conveyor flights being permanently magnetic and by said concave bottom portion of said chute being conductive of magnetic flux.
.
..
~234C)66 The invention is further illustrated with reference to embodiments shown in the accompanying drawings, in which:-~; . .
- 3a-~234()6~
In the drawing, Figure 1 shows the rear partial area of a cutting machine together with a chain conveyor in a side elevation, Figure 2 shows a top plan view of the embodiment according to Figure 1 in the sense of the arrow II of Figure 1, Figure 3 shows in a side elevation a partial area of a chain conveyor according to the in-vention, Figure 4 shows a section along the line IV-IV of Figure 3 and Figure 5 shows a modified construction of the flight attachments in a representation analogous to that of Figure 4.
In the arrangement according to Figure 1, the rear portion of a cutting machine is designated by 1. ~ chain conveyor 2 transports the material cut by the cutting machine upwardly in direction to a discharge location 3.
The drive means for the chain being designated by 4. The discharge location 3 is height-adjustable in direction of the twin arrow 5 and, as can be taken from the top plan view according to Figure 2!can be laterally swung in the sense of the twin arrow 6. The flight att~chments 7 and the chain 8 for the chain conveyor can be seen in Figure 2. The adjustingcylinder Eor swinging movement in height direction is designated by 9 in Figure 1. In case of a correspondingly great swinging movement, a concave area as shown in Figure 3 can result in the conveying direction which is indicated by arrow 10.
In the representation according to Figure 3, the flight attachment is again designated by 7 and the con-~.23~06~
veyor chain is designated by 8. The tension force F isactive in conveying direction indieated by the arrow 10 and results in a vertical foree Fv acting within the concave area 11 of the conveyor in the sense of the arrow 12. This vertical force tends to lift the flight attachments away from the bottom 13 of the conveyor ehute 14 within said area 11, so that eonveying effieieney would be impaired. In usual eonveyor ehutes are thus provided within the area 11 positive guide means whieh are indi-eated by 15 in Figure 5. Now and aeeording to the inven-tion,magnets 16 are arranged within or beneath the bottom 13 of the conveyor chute 14 at least within the area 11. The magnetie attractive foree exerted on the flight attaehments 7 counteracts the vertical force Fv and effects that the flight attachments 7 still slide on the bottom 13 of the conveyor chute 14.
Even if the conveyor chute has a lateral bend in a horizontal plane, the oblique tension of the conveyor chain 8 can result in lifting the flight attachment 7 off the bottom 13 of lthe eonveyor ehute 14, but also in this case the flight attachments 7 are reliably well guided on the bottom 13 on account of the magnets 16 or,respective-ly,17 or on account of the permanently magnetic design of the flight attachments.
The magnets 16 can, as is shown in Figure 4, be formed of permanent magnets, the flight ~ttachments 7 then being formed of a material being conductive for the magnetic flux.
~23~0~,6 ~ 6 --In place of the permanent magnets16 of Figure 4, also electromagnets 17 shown in the lower portion of Figure 5 can be used.
In the embodiment according to Figure 5, there are provided flight attachments comprising permanently ~ag-netic end portions 18. These flight attachments 7 slide on the upper side of the bottom 13 and are pressed against the bottom 13 by a magnetic force Fm in case this bottom consists of a material being conductive for the magnetic flux. Within the area of a bend of the conveyor, the bottom 13 can be formed of a diamagnetic material and the magnetic attractive force can be increased by using electromagnets 17, so that any mis_running or lifting movement of the flight attachments 7 is counteracted.
Claims (7)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A chain conveyor, in particular a swinging con-veyor, comprising flight attachments movably supported on at least one chain and sliding along the bottom of a rigid conveyor chute, in which the flight attachments are, at least in places, formed of a material being conductive for magnetic flux or being permanently magnetic and the bottom of the conveyor chute is equipped with magnets or is formed of a material being conductive for magnetic flux at least within the area of concave deviations of the bottom of the chute from a straight-lined conveying direc-tion in order to prevent the flight attachments from lifting from the bottom of the chute.
2. A chain conveyor as claimed in claim 1, in which the bottom of the conveyor chute has electromagnets within the area of deviations from a straight-lined conveying direction.
3. A chain conveyor as claimed in claim 1 or 2, in which the poles or pole shoes, respectively, of the magnets are arranged on the bottom of the conveyor chute in proximity of the lateral ends of the flight attachments sliding thereover.
4. A chain conveyor as claimed in claim 1, in which only some of the flight attachments are permanently magnetic cleaning scrapers.
5. A chain conveyor comprising: at least one chain carrying a plurality of longitudinally spaced-apart conveyor flights: a conveyor chute in which the chain and conveyor flights move, the chute having a rigid bottom along the upper surface of which the conveyor flights slide in order to convey material along the chute, the bottom having at least one longitudinal por-tion which is concave upwardly due to vertical deviations of the chute from straight line conveying directions with the result that the chain and conveyor flights tend to lift off the bottom of the chute; and means for magnetically attracting the conveyor flights to the concave bottom portion of the chute so as to remain in sliding engagement therewith.
6. A chain conveyor as claimed in claim 5 wherein said magnetic means is constituted by said conveyor flights being con-ductive of magnetic flux and by magnets located adjacent the lower surface of said concave bottom portion of said chute and opposite said conveyor flights.
7. A chain conveyor as claimed in claim 5 wherein said magnetic means is constituted by said conveyor flights being per-manently magnetic and by said concave bottom portion of said chute being conductive of magnetic flux.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ATA3028/84 | 1984-09-24 | ||
| AT302884 | 1984-09-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1234066A true CA1234066A (en) | 1988-03-15 |
Family
ID=3544182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000490326A Expired CA1234066A (en) | 1984-09-24 | 1985-09-10 | Chain conveyor |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPS6181312A (en) |
| CA (1) | CA1234066A (en) |
| DE (1) | DE3530075A1 (en) |
| GB (1) | GB2164619B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10323910A1 (en) * | 2003-05-23 | 2005-01-05 | Siemens Ag | Chain circulation device or belt circulating device and method for their operation |
| ATE446930T1 (en) | 2006-07-12 | 2009-11-15 | Homag Holzbearbeitungssysteme | CHAIN LINK FOR A REVOLUTIONARY TRANSPORT CHAIN OF A MACHINE TOOL, AND DOUBLE-END PROFILER WITH GUIDE CHAINS MADE FROM SUCH CHAIN LINKS |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE366525B (en) * | 1968-12-06 | 1974-04-29 | Dunlop Co Ltd | |
| DE2304560C3 (en) * | 1973-01-31 | 1978-08-17 | Gebr. Eickhoff, Maschinenfabrik U. Eisengiesserei Mbh, 4630 Bochum | Scraper chain conveyors, in particular for tunneling machines |
| DE2354548A1 (en) * | 1973-10-31 | 1975-05-15 | Krupp Gmbh | Conveyor belt bottom run unloading system - uses permanent magnets acting on belt steel rope inserts |
| GB2037690B (en) * | 1978-12-20 | 1982-12-08 | Gefra Bv | Chain conveyors |
-
1985
- 1985-08-22 DE DE19853530075 patent/DE3530075A1/en active Granted
- 1985-09-10 CA CA000490326A patent/CA1234066A/en not_active Expired
- 1985-09-11 GB GB08522485A patent/GB2164619B/en not_active Expired
- 1985-09-20 JP JP20673485A patent/JPS6181312A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6181312A (en) | 1986-04-24 |
| GB2164619B (en) | 1988-03-02 |
| GB2164619A (en) | 1986-03-26 |
| GB8522485D0 (en) | 1985-10-16 |
| DE3530075C2 (en) | 1987-08-06 |
| DE3530075A1 (en) | 1986-04-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |