CA1225059A - Telescopic belt conveyor - Google Patents
Telescopic belt conveyorInfo
- Publication number
- CA1225059A CA1225059A CA000456856A CA456856A CA1225059A CA 1225059 A CA1225059 A CA 1225059A CA 000456856 A CA000456856 A CA 000456856A CA 456856 A CA456856 A CA 456856A CA 1225059 A CA1225059 A CA 1225059A
- Authority
- CA
- Canada
- Prior art keywords
- belt conveyor
- belt
- conveyor
- drive
- telescopic
- 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
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- Structure Of Belt Conveyors (AREA)
- Framework For Endless Conveyors (AREA)
Abstract
A B S T R A C T
A Telescopic conveyor comprises a fixed housing which is open at one end through which a number, as for instance two, three or more, lengthy and belt carrying units arran-ged above each other are extendably and retractably and slidably mounted within the housing to be slit out from the housing, whereby the lower slidable units at the outer end comprise supporting means for carrying the slidable units positioned above and whereby each of the slidable units comprise at least two belt rollers or drums of which one is positioned foremost at each of the units and whereby furthermore a telescopic drive unit is contained within the conveyor comprising one or more drive belts or drive chains with the ends of each drive belt or drive chain being con-nected in one end to the fixed and in the other end to the uppermost slidable unit so that at least one of the drive belts or the drive chains are driven by a drive roller or drum respectively by a sprocket. The housing may be of the hoistable kind being carried by a hoisting device or may be f.i. of the hinged kind, being hinged unto a supporting stand or unto a rollable cart. Comprising one common con-veyor belt, this belt and the telescopic drive may be con-trolled from a front end control box.
A Telescopic conveyor comprises a fixed housing which is open at one end through which a number, as for instance two, three or more, lengthy and belt carrying units arran-ged above each other are extendably and retractably and slidably mounted within the housing to be slit out from the housing, whereby the lower slidable units at the outer end comprise supporting means for carrying the slidable units positioned above and whereby each of the slidable units comprise at least two belt rollers or drums of which one is positioned foremost at each of the units and whereby furthermore a telescopic drive unit is contained within the conveyor comprising one or more drive belts or drive chains with the ends of each drive belt or drive chain being con-nected in one end to the fixed and in the other end to the uppermost slidable unit so that at least one of the drive belts or the drive chains are driven by a drive roller or drum respectively by a sprocket. The housing may be of the hoistable kind being carried by a hoisting device or may be f.i. of the hinged kind, being hinged unto a supporting stand or unto a rollable cart. Comprising one common con-veyor belt, this belt and the telescopic drive may be con-trolled from a front end control box.
Description
The present invention relates to a telescopic belt con-voyeur comprising a plurality of above each other arranged and into and out from a supporting housing extendible and retractable and slid ably mounted belt conveyor portions.
Such a type of belt conveyor can have a housing which is fixed positioned and the outmost conveyor end can be slimed out from the house into the cargo compartment of a vehicle to enable an easy loading and unloading of parcels or other objects of confined dimensions in-to or from such a cargo compartment.
The housing can also be mounted on a cart foe. hinged at the rear end unto a supporting stand upon the cart and supported upon the cart by a pneumatic or hydraulic cylinder means at the front end of the housing thus enabling the telescopic belt conveyor to establish an oblique loading respectively unloading pathway unto or from a higher or lower positioned cargo compartment of a cargo vehicle, etc.
The present invention provides a telescopic belt con-voyeur which being of very sturdy nature also is comparatively cheap to manufacture and within which the number of movable parts is kept very low.
The present invention also provides a telescopic belt I conveyor which besides possessing the above-mentioned advantages also, in a cheap manner, effectively can be controlled from the front end of the belt conveyor thus enabling a manipulation of the belt conveyor by a person being situated deep within a large cargo compartment, foe. of a vehicle, or deep within a store room, etc.
Furthermore, the present invention provides a tote-scopic belt conveyor in which the main connecting and mounting parts with a minimum of rearrangement can be utilized for tote-scopic conveyors comprising different numbers of slid able belt conveyor portions.
According to the present invention there is provided a telescopic belt conveyor comprising a plurality ox slid ably mounted belt conveyor sections arranged above each other, said sections being extendible and retractable from and into a sup-porting housing and sharing a guide means for a common conveyor belt which in each section comprises at least two conveyor belt guiding rolls, of which one roll is positioned farther out in the section than the at least one other roll which is positioned at a length at least equal to the section extension length behind the first-mentioned roll or the section; a common drive means for driving a driven tackle means, said driven tackle means including at least one tackle guide direction changing means and being drivable connected with an extendible and retractable belt con-voyeur section which is above an intermediate section of said belt conveyor sections and with the supporting housing driving the extension and retraction of said extendible and retractable belt conveyor sections; a second undriven tackle means having one end connected to the inner end of the outermost of said belt conveyor sections and another end connected to -the supporting housing, the common drive means for the driven tackle means being positioned at the rear end portion of said intermediate section of said extendible and retractable belt conveyor sections, and each of said tackle means comprising at least one flexible portion and at least one drive direction changing means whereby at least two belt conveyor sections can be provided and can be extended and retracted by said common drive means, said driven tackle means and said undriven tackle means.
Thus, in the telescopic conveyor according to the pro-sent invention the belt conveyor sections comprise one common conveyor belt or along a common pathway run conveyor belts being within each belt section led over two conveyor belt guiding rolls, of which one is positioned at the front end and the other in spaced relationship at least with the extension length behind the first of the two rolls within each conveyor belt portion and a common drive unit for the performing of the extending and retracting telescopic movements is positioned behind the conveyor belt rolls of the telescopic movable portions of the telescopic belt conveyor.
A drive unit within such a telescopic conveyor which fulfill the purpose of simplicity and possibility of application in connection with more such slid able mounted belt conveyor sea-lions comprises two or more lengths of belt or chain portions of which at least one length has one end connected to the inner end of the outmost belt conveyor portion and the other end connected to the outer end of the inmost of the belt conveyor portions and which length is driven by a belt or chain drive unit positioned at the rear portion of one of the intermediate extendible and retractable belt conveyor portions and which length is led over guide direction changing means respectively positioned at the opposite ends of the belt conveyor units if more such are present below and above the drive unit carrying belt conveyor portion to achieve said fastening of the drive belt or chain for the tell-scopic movements and in that at least one further length of belt or chain undriven at its two ends is connected as the just-men-toned drive belt or chain length unto the same or in the vial-nit of the connecting positions Hereford and being led over guide direction changing means positioned at, compared hereto, opposite ends with regard to the corresponding means for the aforesaid drive belt or chain length.
In one embodiment of the present invention the conveyor comprises activating circuit means associated with the drive means for the telescopic movement of the conveyor, and locally operable means positioned at the outmost end of the outermost extendible and retractable belt conveyor section for activating the circuit means. Suitably the supporting house has a free spaced lower and rear end portion comprising at least one tension roll for the common conveyor belt. Desirably said driven tackle means is drivable connected with the outermost extendible and retractable conveyor section and with the supporting housing for I
driving the extension and retraction of said extendible and retractable belt conveyor sections.
Further advantages according to the present invention become evident from the following more detailed description of a preferred embodiment according to the invention under reference to the accompanying drawing, in which:-jig. l illustrates in perspective a telescopic belt lo conveyor having two ~xtendable and one fixed belt conveyor port lions embodying the present invention;
Fig. 2 shows the same as Fig. 1, but in a modified embodiment;
Fig. 3 illustrates a vertical lengthwise cut through any of the embodiments according to Fig. 1 or Fig. 2 showing the essential internal elements within the conveyor;
Fig. 4 illustrates the same as Fig. 3, but shows only the arrangement of the common belt for the three belt conveyor portions; and Fig. 5 illustrates the same as Fig. 3, but shows only the arrangement of the drive unit for driving the telescopic movements within the conveyor.
Fig. l and Fig. 2 of the drawing illustrates in the perspective two embodiments of a telescopic belt conveyor accord-in to the present invention, namely comprising an outmost belt conveyor portion 1 carried by an intermediate belt conveyor port lion 2 which again is carried by a belt conveyor portion housed within a fixed housing 3. The housing can thus be fixed, but can as earlier mentioned also be arranged on a supporting cart, etc.
The front end 4 of the telescopic belt conveyor carries a box 100 which can house switches for the operations of the belt end of I
5~9 the telescopic movements of the telescope. The switches can thus be placed in series or in parallel or be switched, by a switch panel positioned anywhere else, out or in, in proportion to the control circuit for drive motors of conventional type used to drive the belt or the - 3b -drive unit for driving the telescopic movements and itch drive means are described in more detail as foliages. The box 100 of fig. 1 or fig. 2 can via a cable housed upon a cable reel positioned in the conveyor housing 3 stay in connection with the mentioned control circuits. The cable can be as well an electric cable or a pneumatic or hydra-fig connection cable or other well known cable typos to be used for the purpose.
The conveyor carries an endless belt 5 which can be driven by any roller carrying the belt. In case of the em-bodiment shown in lengthwise cross section in fig. 3 and 5 the belt is driven by roll 6, within which a drive motor of well known type is positioned. The main feature of the con-voyeur is that one common belt is used for all the telesco-pie belt conveyor portions 1, 2 and 3. Further such belt conveyor portions can be added as earlier mentioned as two additional rolls are added each time or the carrying of the common belt I namely two additional rolls per belt conveyor portion. Only two rolls are thus required, but in case of especially heavy cargo to be handled by the conveyor evidently further belt supporting rolls may be added, but for general use the remarkable is that no more rolls than indicated have to be used.
The drive unit for the performing of the telescopic movements is illustrated in fig. 3 and fig. 5. The ad van-tare according to the invention is that the drive unit mow ion for these movements also is common for all the employed belt conveyor portions, the drive motor is designated 31.
It may be an electric motor just as well as the drive motor for the belt may be it. But use of other motor types such as pneumatically or hydraulic motor types is without further modification generally possible. The motor 31 drives through some kind of transmission foe. via a chain 33 and sprockets 32 and 34 a drive wheel or sprocket 10 a drive belt or drive chain 9 having in case of the shown embody-mint three sub lengths PA, 9B and 9C together forming the complete necessary drive length which in the hollowing without further reference is designated 9. An other undoer-Yen length of belt or chain in complete also without fur-then reference designated 8 comprises according to fig. 3 and fig. 5 ox the drawing two sub lengths PA and 8B. The one end of the lengths 8 and 9 in general are connected to the housing portion 3 of the belt conveyor as shown at the front end of the housing 3, whereas the other end of the lengths 8 and 9 not too far from each other are connected unto the outmost extendible belt conveyor portion 1. When the motor 31 rotates the one or the other way round the intermediate belt conveyor portion 2 shown carrying the drive motor 31 slides itself out or in in proportion to the housing 3, and whenever the friction sliding friction not is too high between the belt conveyor portions 1 and 2 the belt conveyor portion 1 is extended or retracted in proportion to the belt conveyor portion 2 simultaneously.
A sprocket 90 or other suitable guiding means situated upon the intermediate belt conveyor portion 2 may be comprised.
It serves the purpose of maintaining the operational guide-directions of the two sub lengths PA and 9C in proportion to the telescopic movements whereby the drive belts or chains 8 and 9 are kept reasonably tight during the tote-scopic movements and therefore also during periods of use and rest of the conveyor.
According to fig. 3 and fig. 4 the common transport-lion belt 5 is run over rolls 6, which is the drive roll, and rolls 12, 13, 14, 15, 16, 17 and 18. The rolls 12 and 13 are situated upon the belt conveyor portion 1, the rolls 14 and 15 upon the drive motor carrying belt conveyor port lion 2 and the rolls 16, 17 and 18 inclusive roll 6 are situated within the housing portion 3. Theoretically the rolls 17 and 18 could be omitted, but they serve -the pun-pose as tension keeping means for keeping the belt 5 in a suitable stretched condition, thus 29 designates a screw means to adjust the position ox roll 17.
The mechanical spacing between the two rolls of each belt conveyor portion, i.e. between rolls 13 and 14 and between rolls 14 and 15 of -the movable portions, should be so that the spacing is larger than the maximum extension travel of each of the single belt conveyor portions. With a roller arrangement as shown the belt 5 remains suitably stretched irrespective of the actual extension position of the outmost belt conveyor portion 1.
The drive motor 31 may be supplied by a cable connect lion wound upon a cable reel, and by means of the shown structure according to the present invention the two men-toned cable reels may be positioned foe. on the same reel axis positioned in the housing 3 at the rear of the drive motor 31 and in front of the drive roller 6.
The single extendible belt conveyor portions 1 and 2 may slide in simple guide rails. The mounting and friction may be achieved for better performance by inserting sup-port rollers 20, 21, 22 and 23 and possibly also foe. by rollers on the axis common with the guide means 80.
To enable a possibility of adjusting the tension of the belt 5 from both ends of the conveyor tensioning screws 27 acting in connection with roller 12 might be mounted.
To safeguard that the drive motor 31 not overtrains the drive belt or drive chains 8 and 9 two end stop swim-ekes can be inserted at I and 25 for the switching off no-spectively possible reversal of the drive direction of mow ion 31. The end stop switches are shown positioned upon it-ration rails so that their positions may be adjusted.
The foremost conveyor belt roll may consist of an inner rotary roll having a somewhat oversize diameter and of two shorter fixed positioned rolls with smaller diameter with one such shorter roll positioned at either side of the rotary conveyor belt roll all mounted having acom~on~eometrical axis. Hereby the front end becomes more finger touch proof and therefore more safe to use for the persons during foe-ding and unloading of the conveyor.
Such a type of belt conveyor can have a housing which is fixed positioned and the outmost conveyor end can be slimed out from the house into the cargo compartment of a vehicle to enable an easy loading and unloading of parcels or other objects of confined dimensions in-to or from such a cargo compartment.
The housing can also be mounted on a cart foe. hinged at the rear end unto a supporting stand upon the cart and supported upon the cart by a pneumatic or hydraulic cylinder means at the front end of the housing thus enabling the telescopic belt conveyor to establish an oblique loading respectively unloading pathway unto or from a higher or lower positioned cargo compartment of a cargo vehicle, etc.
The present invention provides a telescopic belt con-voyeur which being of very sturdy nature also is comparatively cheap to manufacture and within which the number of movable parts is kept very low.
The present invention also provides a telescopic belt I conveyor which besides possessing the above-mentioned advantages also, in a cheap manner, effectively can be controlled from the front end of the belt conveyor thus enabling a manipulation of the belt conveyor by a person being situated deep within a large cargo compartment, foe. of a vehicle, or deep within a store room, etc.
Furthermore, the present invention provides a tote-scopic belt conveyor in which the main connecting and mounting parts with a minimum of rearrangement can be utilized for tote-scopic conveyors comprising different numbers of slid able belt conveyor portions.
According to the present invention there is provided a telescopic belt conveyor comprising a plurality ox slid ably mounted belt conveyor sections arranged above each other, said sections being extendible and retractable from and into a sup-porting housing and sharing a guide means for a common conveyor belt which in each section comprises at least two conveyor belt guiding rolls, of which one roll is positioned farther out in the section than the at least one other roll which is positioned at a length at least equal to the section extension length behind the first-mentioned roll or the section; a common drive means for driving a driven tackle means, said driven tackle means including at least one tackle guide direction changing means and being drivable connected with an extendible and retractable belt con-voyeur section which is above an intermediate section of said belt conveyor sections and with the supporting housing driving the extension and retraction of said extendible and retractable belt conveyor sections; a second undriven tackle means having one end connected to the inner end of the outermost of said belt conveyor sections and another end connected to -the supporting housing, the common drive means for the driven tackle means being positioned at the rear end portion of said intermediate section of said extendible and retractable belt conveyor sections, and each of said tackle means comprising at least one flexible portion and at least one drive direction changing means whereby at least two belt conveyor sections can be provided and can be extended and retracted by said common drive means, said driven tackle means and said undriven tackle means.
Thus, in the telescopic conveyor according to the pro-sent invention the belt conveyor sections comprise one common conveyor belt or along a common pathway run conveyor belts being within each belt section led over two conveyor belt guiding rolls, of which one is positioned at the front end and the other in spaced relationship at least with the extension length behind the first of the two rolls within each conveyor belt portion and a common drive unit for the performing of the extending and retracting telescopic movements is positioned behind the conveyor belt rolls of the telescopic movable portions of the telescopic belt conveyor.
A drive unit within such a telescopic conveyor which fulfill the purpose of simplicity and possibility of application in connection with more such slid able mounted belt conveyor sea-lions comprises two or more lengths of belt or chain portions of which at least one length has one end connected to the inner end of the outmost belt conveyor portion and the other end connected to the outer end of the inmost of the belt conveyor portions and which length is driven by a belt or chain drive unit positioned at the rear portion of one of the intermediate extendible and retractable belt conveyor portions and which length is led over guide direction changing means respectively positioned at the opposite ends of the belt conveyor units if more such are present below and above the drive unit carrying belt conveyor portion to achieve said fastening of the drive belt or chain for the tell-scopic movements and in that at least one further length of belt or chain undriven at its two ends is connected as the just-men-toned drive belt or chain length unto the same or in the vial-nit of the connecting positions Hereford and being led over guide direction changing means positioned at, compared hereto, opposite ends with regard to the corresponding means for the aforesaid drive belt or chain length.
In one embodiment of the present invention the conveyor comprises activating circuit means associated with the drive means for the telescopic movement of the conveyor, and locally operable means positioned at the outmost end of the outermost extendible and retractable belt conveyor section for activating the circuit means. Suitably the supporting house has a free spaced lower and rear end portion comprising at least one tension roll for the common conveyor belt. Desirably said driven tackle means is drivable connected with the outermost extendible and retractable conveyor section and with the supporting housing for I
driving the extension and retraction of said extendible and retractable belt conveyor sections.
Further advantages according to the present invention become evident from the following more detailed description of a preferred embodiment according to the invention under reference to the accompanying drawing, in which:-jig. l illustrates in perspective a telescopic belt lo conveyor having two ~xtendable and one fixed belt conveyor port lions embodying the present invention;
Fig. 2 shows the same as Fig. 1, but in a modified embodiment;
Fig. 3 illustrates a vertical lengthwise cut through any of the embodiments according to Fig. 1 or Fig. 2 showing the essential internal elements within the conveyor;
Fig. 4 illustrates the same as Fig. 3, but shows only the arrangement of the common belt for the three belt conveyor portions; and Fig. 5 illustrates the same as Fig. 3, but shows only the arrangement of the drive unit for driving the telescopic movements within the conveyor.
Fig. l and Fig. 2 of the drawing illustrates in the perspective two embodiments of a telescopic belt conveyor accord-in to the present invention, namely comprising an outmost belt conveyor portion 1 carried by an intermediate belt conveyor port lion 2 which again is carried by a belt conveyor portion housed within a fixed housing 3. The housing can thus be fixed, but can as earlier mentioned also be arranged on a supporting cart, etc.
The front end 4 of the telescopic belt conveyor carries a box 100 which can house switches for the operations of the belt end of I
5~9 the telescopic movements of the telescope. The switches can thus be placed in series or in parallel or be switched, by a switch panel positioned anywhere else, out or in, in proportion to the control circuit for drive motors of conventional type used to drive the belt or the - 3b -drive unit for driving the telescopic movements and itch drive means are described in more detail as foliages. The box 100 of fig. 1 or fig. 2 can via a cable housed upon a cable reel positioned in the conveyor housing 3 stay in connection with the mentioned control circuits. The cable can be as well an electric cable or a pneumatic or hydra-fig connection cable or other well known cable typos to be used for the purpose.
The conveyor carries an endless belt 5 which can be driven by any roller carrying the belt. In case of the em-bodiment shown in lengthwise cross section in fig. 3 and 5 the belt is driven by roll 6, within which a drive motor of well known type is positioned. The main feature of the con-voyeur is that one common belt is used for all the telesco-pie belt conveyor portions 1, 2 and 3. Further such belt conveyor portions can be added as earlier mentioned as two additional rolls are added each time or the carrying of the common belt I namely two additional rolls per belt conveyor portion. Only two rolls are thus required, but in case of especially heavy cargo to be handled by the conveyor evidently further belt supporting rolls may be added, but for general use the remarkable is that no more rolls than indicated have to be used.
The drive unit for the performing of the telescopic movements is illustrated in fig. 3 and fig. 5. The ad van-tare according to the invention is that the drive unit mow ion for these movements also is common for all the employed belt conveyor portions, the drive motor is designated 31.
It may be an electric motor just as well as the drive motor for the belt may be it. But use of other motor types such as pneumatically or hydraulic motor types is without further modification generally possible. The motor 31 drives through some kind of transmission foe. via a chain 33 and sprockets 32 and 34 a drive wheel or sprocket 10 a drive belt or drive chain 9 having in case of the shown embody-mint three sub lengths PA, 9B and 9C together forming the complete necessary drive length which in the hollowing without further reference is designated 9. An other undoer-Yen length of belt or chain in complete also without fur-then reference designated 8 comprises according to fig. 3 and fig. 5 ox the drawing two sub lengths PA and 8B. The one end of the lengths 8 and 9 in general are connected to the housing portion 3 of the belt conveyor as shown at the front end of the housing 3, whereas the other end of the lengths 8 and 9 not too far from each other are connected unto the outmost extendible belt conveyor portion 1. When the motor 31 rotates the one or the other way round the intermediate belt conveyor portion 2 shown carrying the drive motor 31 slides itself out or in in proportion to the housing 3, and whenever the friction sliding friction not is too high between the belt conveyor portions 1 and 2 the belt conveyor portion 1 is extended or retracted in proportion to the belt conveyor portion 2 simultaneously.
A sprocket 90 or other suitable guiding means situated upon the intermediate belt conveyor portion 2 may be comprised.
It serves the purpose of maintaining the operational guide-directions of the two sub lengths PA and 9C in proportion to the telescopic movements whereby the drive belts or chains 8 and 9 are kept reasonably tight during the tote-scopic movements and therefore also during periods of use and rest of the conveyor.
According to fig. 3 and fig. 4 the common transport-lion belt 5 is run over rolls 6, which is the drive roll, and rolls 12, 13, 14, 15, 16, 17 and 18. The rolls 12 and 13 are situated upon the belt conveyor portion 1, the rolls 14 and 15 upon the drive motor carrying belt conveyor port lion 2 and the rolls 16, 17 and 18 inclusive roll 6 are situated within the housing portion 3. Theoretically the rolls 17 and 18 could be omitted, but they serve -the pun-pose as tension keeping means for keeping the belt 5 in a suitable stretched condition, thus 29 designates a screw means to adjust the position ox roll 17.
The mechanical spacing between the two rolls of each belt conveyor portion, i.e. between rolls 13 and 14 and between rolls 14 and 15 of -the movable portions, should be so that the spacing is larger than the maximum extension travel of each of the single belt conveyor portions. With a roller arrangement as shown the belt 5 remains suitably stretched irrespective of the actual extension position of the outmost belt conveyor portion 1.
The drive motor 31 may be supplied by a cable connect lion wound upon a cable reel, and by means of the shown structure according to the present invention the two men-toned cable reels may be positioned foe. on the same reel axis positioned in the housing 3 at the rear of the drive motor 31 and in front of the drive roller 6.
The single extendible belt conveyor portions 1 and 2 may slide in simple guide rails. The mounting and friction may be achieved for better performance by inserting sup-port rollers 20, 21, 22 and 23 and possibly also foe. by rollers on the axis common with the guide means 80.
To enable a possibility of adjusting the tension of the belt 5 from both ends of the conveyor tensioning screws 27 acting in connection with roller 12 might be mounted.
To safeguard that the drive motor 31 not overtrains the drive belt or drive chains 8 and 9 two end stop swim-ekes can be inserted at I and 25 for the switching off no-spectively possible reversal of the drive direction of mow ion 31. The end stop switches are shown positioned upon it-ration rails so that their positions may be adjusted.
The foremost conveyor belt roll may consist of an inner rotary roll having a somewhat oversize diameter and of two shorter fixed positioned rolls with smaller diameter with one such shorter roll positioned at either side of the rotary conveyor belt roll all mounted having acom~on~eometrical axis. Hereby the front end becomes more finger touch proof and therefore more safe to use for the persons during foe-ding and unloading of the conveyor.
Claims (5)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A telescopic belt conveyor comprising a plurality of slidably mounted belt conveyor sections arranged above each other, said sections being extendable and retractable from and into a supporting housing and sharing a guide means for a common conveyor belt which in each section comprises at least two con-veyor belt guiding rolls, of which one roll is positioned farther out in the section than the at least one other roll which is positioned at a length at least equal to the section extension length behind the first-mentioned roll of the section; a common drive means for driving a driven tackle means, said driven tackle means including at least one tackle guide direction changing means and being drivably connected with an extendable and retractable belt conveyor section which is above an intermediate section of said belt conveyor sections and with the supporting housing driving the extension and retraction of said extendable and retractable belt conveyor sections; a second undriven tackle means having one end connected to the inner end of the outermost of said belt conveyor sections and another end connected to the supporting housing, the common drive means for the driven tackle means being positioned at the rear end portion of said interme-diate section of said extendable and retractable belt conveyor sections, and each of said tackle means comprising at least one flexible portion and at least one drive direction changing means whereby at least two belt conveyor sections can be provided and can be extended and retracted by said common drive means, said driven tackle means and said undriven tackle means.
2. A telescopic belt conveyor as claimed in claim 1, further comprising activating circuit means associated with the drive means for the telescopic movement of the conveyor, and locally operable means positioned at the outmost end of the outermost extendable and retractable belt conveyor section for activating the circuit means.
3. telescopic belt conveyor as claimed in claim 1, in which the supporting house has a free spaced lower and rear end portion comprising at least one tension roll for the common conveyor belt.
4. A telescopic belt conveyor as claimed in claim 2, in which the supporting housing has a free spaced lower and rear end portion comprising at least one tension roll for the common conveyor belt.
5. A telescopic belt conveyor as claimed in claim 1, wherein said driven tackle means is drivably connected with the outermost extendible and retractable conveyor section and with the supporting housing for driving the extension and retraction of said extendable and retractable belt conveyor sections.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000456856A CA1225059A (en) | 1984-06-19 | 1984-06-19 | Telescopic belt conveyor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000456856A CA1225059A (en) | 1984-06-19 | 1984-06-19 | Telescopic belt conveyor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1225059A true CA1225059A (en) | 1987-08-04 |
Family
ID=4128124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000456856A Expired CA1225059A (en) | 1984-06-19 | 1984-06-19 | Telescopic belt conveyor |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1225059A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2437215A1 (en) * | 2012-07-05 | 2014-01-09 | Cecilia Vila Torra | Cargo loading and unloading device and loading and unloading dock comprising the loading and unloading device (Machine-translation by Google Translate, not legally binding) |
-
1984
- 1984-06-19 CA CA000456856A patent/CA1225059A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2437215A1 (en) * | 2012-07-05 | 2014-01-09 | Cecilia Vila Torra | Cargo loading and unloading device and loading and unloading dock comprising the loading and unloading device (Machine-translation by Google Translate, not legally binding) |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |