CA1181028A - Variable belt loop on a tripper in a reversible conveyor system - Google Patents
Variable belt loop on a tripper in a reversible conveyor systemInfo
- Publication number
- CA1181028A CA1181028A CA000397421A CA397421A CA1181028A CA 1181028 A CA1181028 A CA 1181028A CA 000397421 A CA000397421 A CA 000397421A CA 397421 A CA397421 A CA 397421A CA 1181028 A CA1181028 A CA 1181028A
- Authority
- CA
- Canada
- Prior art keywords
- tripper
- rocker beam
- conveyor
- pulley
- deflection
- 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
- 230000002441 reversible effect Effects 0.000 title claims abstract description 7
- 230000000694 effects Effects 0.000 abstract description 3
- 230000007246 mechanism Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 4
- 230000002730 additional effect Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000008093 supporting effect Effects 0.000 description 2
- 239000013590 bulk material Substances 0.000 description 1
- 229940000425 combination drug Drugs 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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
- B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
- B65G47/74—Feeding, transfer, or discharging devices of particular kinds or types
- B65G47/94—Devices for flexing or tilting travelling structures; Throw-off carriages
- B65G47/95—Devices for flexing or tilting travelling structures; Throw-off carriages adapted for longitudinal delivery
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structure Of Belt Conveyors (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A quick reverse mechanism is provided in a reversible conveyor system. A conveyor rocker beam having a deflection pulley at each of its ends is connected to selectively controlled hoisting devices on the tripper. The conveyor belt is guided underneath the rocker beam near the discharge pulley, in either direction of travel of the conveyor system, that is, belt loops are formed in two different positions of the rocker beam for opposite directions of delivery. The axles of the deflection pulleys of the rocker beam are each guided by two pairs of arcuately slotted guide members, arranged opposite each other on the conveyor structure adjacent the tripper. A pair of additional deflection pulleys are provided, both at a predetermined height on the conveyor structure, or, alternatively, one of the additional deflection pulleys is positioned at a fixed height, with the other deflection pulley being movable vertically, so as to effect reversal of the tripper.
A quick reverse mechanism is provided in a reversible conveyor system. A conveyor rocker beam having a deflection pulley at each of its ends is connected to selectively controlled hoisting devices on the tripper. The conveyor belt is guided underneath the rocker beam near the discharge pulley, in either direction of travel of the conveyor system, that is, belt loops are formed in two different positions of the rocker beam for opposite directions of delivery. The axles of the deflection pulleys of the rocker beam are each guided by two pairs of arcuately slotted guide members, arranged opposite each other on the conveyor structure adjacent the tripper. A pair of additional deflection pulleys are provided, both at a predetermined height on the conveyor structure, or, alternatively, one of the additional deflection pulleys is positioned at a fixed height, with the other deflection pulley being movable vertically, so as to effect reversal of the tripper.
Description
This invention rela-tes -to a variable bel~t loop in a -tripper of a reversible conveyor sys-tem having a rocker beam fi-t-ted wi-th a deFlection pulley a-t each end and connec-ted to al-ternately operable hois-ting systems on -the -tripper, -the conveyor belt being taken around an addi-tional deflection pulley underneath the rocker beam near what is the discharging pulley at the time, belt loops being formed in the two al-terna-te positions of the rocker beam for opposi-te directions of conveying.
S-tacking and reclaiming of bulk materials on and from stock yards may be by so-called combina-tion s-tackers/reclaimers, for instance of -the bucke-t wheel -type which are capable of working in either mode. During operation as stackers, these uni-ts receive -the ma-terial to be worked ou-t by means of a -tripper from -the conveyor sys-tem (stockyard conveyor), -the tripper transferring -the material to be handled onto an inclirled conveyor which elevates -the ma-terial -to ~the boom conveyor of the combination uni-t. I-t is also known -to use the -tripper in the reclaiming mode in which case -the bel-t loop is also required -to perform its func-tion when -the direction of delivery is reversed. This involves removing or reversing -the belt loop and several solu-tions are known of how -to effect -this.
The so]utions used in prac-tice for removing or reversing -the bel-t loop as a rule necessitate major repositioning and modifica--tion opera-tions which, due -to the be:Lt tension :Forces arising are difficul-t -to carry out and a rela-tively long period of -time is required.
In another ]cnown solu-tion, a rocker beam is provided which is fitted a-t bo-th ends wi-th discharge pulleys which are capble of being raised and lowered by means of hoising devices. Near -the ends of -the rocker beam -there are additional deflec-tion pulleys suppor-ted on pairs of links. If the direc-tion of delivery of the conveyor system is reversed, -the rocker beam is brough-t by means of -the hois-ting devices in-to -the desired posi-tion, wi-th the links being moved on the arc of a circle outside and over the pulley which was the discharging one up to now. A-t -the same time, the deflec-tion pulley arranged at the other end of the rocker beam is moved by -the links into the appropria-te position, whereby -the conveyor belt is redirec-ted so as to move away from what was -the discharge pulley up to now (German Pa-tent No. 1,211,531). In this known proposal, the belt tension forces act continuously on -the hois-ting devices. Apart from that, the use of link systems is undesirable.
The present invention has for i-ts objec-t to arrange a tripper so tha-t changing the belt loop can be effected reliably and quickly with only li-t-tle slack occurring and with the supporting sys-tem being loaded only in a relatively short time by -the bel-t tension forces.
This objec-t is achieved according to the inven-tion in -tha-t the axes of the deflec-tion pulleys on the rocker beam are guided in -two pairs of slots provided a-t opposi-te ends in the s-truc-ture of the tripper and in -tha~t -the -two addi-tional deflection pulleys are either arranged both on the structure of -the tripper at a constan-t heigh-t or in that only the deflec-tion pulley used during s-tacking is a-t a con-s-tan-t height whereas the o-ther deflec-tion pulley is arranged variably for height on the structure of -the -tripper. As a resu~L-t of -these features, -the discharge pulley is au-toma-tically guided around -the a~socia-ted deflection pulley (snub pulley), -the leng-th of -the bel-t remaining subs-tan-tially unchanged and -the bel-t -tension forces remaining mos-t of -the -time inside -the suppor-ting sys-tem wi-th -the hois-ting devices being loaded only a very short time. The change-over opera-tion can be carried ou-t in a short period of -time with a high degree of reli-ability.
~ principal objec-t is -to provide a variable belt loop in a tripper of a reversible conveyor sys-tem comprising: a rocker beam having a deflection pulley a-t each of i-ts ends, said rocker beam being connec-ted to a pair of hois-ting devices on -the -tripper; said belt being guided underneath the end of the rocker beam which has been elevated by one of said hoising devices; a pair of arcuately slotted guide members at each end of -the rocker beam are adapted -to guide the axles of the deflection pulleys at each end of said rocker beam; said deflec-tion pulleys being arranged adjacent each end of said rocker beam a-t a prede-termined heigh-t.
A -typical embodimen-t of -the invention is shown schema-tically in ~the accompanying drawing in which:
Figure 1 is a side elevation of the -tripper in -the s-tacking mode;
Figure 2 is a side eleva-tion of the -tripper in -the reclaim-ing mode;
Figure 3 is a side elevation showing a detailed varian-t of the arrangement -to vary -the height of one of -the def:Lection pulleys together with the tripper; and Figure 4 shows one of -the discharge pulleys, partially sec-tioned.
The -tripper is formed with a s-truc-ture 1 as well as -travel mechanisms 2 running on rails on bo-th sides of -the conveyor line.
Arranged on -the struc-ture 1 are two alternately operable hoisting devices 3, L~ whose lifting elemen-ts 5, 6 (e.g. ropes) are a-t-tached to a rocker beam 7. The rocker beam 7 is provided a-t each end wi-th a deflec-tion pulley 8 and 9 respectively and suppor-ts -the idlers 10 carrying the reversib:Le bel-t 11. Each deflection pulley 8 and 9 has on i-ts axle -two rolling elemen-ts, preferably guide rollers 2~, fit-ted in a manner ]cnown per se a-t i-ts two ends which are guided in -two ~:`
arcua-tely slo-t-ted guides 12, 13 fixed opposi-te each o-ther in the s-tructure 1. The curve guidance o:F -the slot-ted guides is such -tha-t the deflection pulleys 8, 9 can be swung pas-t -the deflec-tion pulley 16, 17 and -that a minimum of slack occurs as -the change-over from one mode to the other is effec-ted.
The belt 11 is fur-thermore -taken around -the deflection pulleys 14, 15 at -the ends of -the conveyor line as well as - depending on the direction of delivery - around the deflection pulleys 16 or 17 respectively. The deflec-tion pulley 16 which is in use for reclaiming is arranged a-t a fixed heigh-t in the s-tructure ] of the -tripper. The deflection pulley 17 which is effective for s-tacking is arranged at a fixed height in structure 1 in the representa-tions of Figures 1 and 2;
to effect the change-over for s-tacking, the idler table 18, which can be raised and lowered, is lifted from -the posltion shown in Figure 1 into -the position shown in Figure 2. In the variant shown in Figure 3, the idler -table 18 (Figure 3) is at a fixed height and -the de:Flec-tion pulley 17 is moun-ted at the front end of a fulcrum lever 19 which is pivoted on the structure 1 and whose rear end is engaged by a pivo-ting drive 20 which is connec-ted between -the lever 19 and a sui-t-able abu-tment of the structure 1.
The hois-ting devices 3, 4 may take the form of, say, winches or hydraulic pis-ton-cylinder uni-ts.
If -the rocker beam 7 is -to be changed from -the posi~tion shown in Figure 1 in-to -the posi-tion shown in Figure 2, -the hois-ting dcvice 4 is opera-ted in the lifting direction, whereas -the hois-ting device 3 is opera-ted in a manner permi-t-ting the hois-ting device -to yield. The deflection pulley 3 is -then -taken au-toma-tically pas-t -the deflection pulley 16 un-til i-t has reached -the lower end of -the associa-ted pair of slo~ts 12. A-t -the same -time, the de:Flection pulley 9 is pulled in the curved slo-ts in -the pair of slo-t-ted pieces 13 in-to i-ts upper position. In -the variant illus-tra-ted by Figures 1 and 2, the idler table 18 is raised un-til its idlers con-tac-t the underside of the belt. In -the variant shown in Figure 3, the deflection pulley 17 is swung downwards until it contac-ts the upper side of the belt.
In the operating position 'stacking" shown in Figure 1, the material to be handled is discharged in a manner known per se from the belt 11 via a chute 21 onto the belt of an inclined conveyor 22 which takes it to the boom conveyor of a combination unit. In the operating position "reclaiming-' illustrated in Figure 2, the bulk material coming from the combination unit is -transferred in a manner known per se onto -the belt 11 whose direction of delivery has been reversed now and conveyed onwards in the direction indica-ted by the arrows in Figure 2, the material passing from the deflection pulley 9 via a chute 23 onto the belt 11 in -the area of the idler table 18 and eventually to its destina-tion.
S-tacking and reclaiming of bulk materials on and from stock yards may be by so-called combina-tion s-tackers/reclaimers, for instance of -the bucke-t wheel -type which are capable of working in either mode. During operation as stackers, these uni-ts receive -the ma-terial to be worked ou-t by means of a -tripper from -the conveyor sys-tem (stockyard conveyor), -the tripper transferring -the material to be handled onto an inclirled conveyor which elevates -the ma-terial -to ~the boom conveyor of the combination uni-t. I-t is also known -to use the -tripper in the reclaiming mode in which case -the bel-t loop is also required -to perform its func-tion when -the direction of delivery is reversed. This involves removing or reversing -the belt loop and several solu-tions are known of how -to effect -this.
The so]utions used in prac-tice for removing or reversing -the bel-t loop as a rule necessitate major repositioning and modifica--tion opera-tions which, due -to the be:Lt tension :Forces arising are difficul-t -to carry out and a rela-tively long period of -time is required.
In another ]cnown solu-tion, a rocker beam is provided which is fitted a-t bo-th ends wi-th discharge pulleys which are capble of being raised and lowered by means of hoising devices. Near -the ends of -the rocker beam -there are additional deflec-tion pulleys suppor-ted on pairs of links. If the direc-tion of delivery of the conveyor system is reversed, -the rocker beam is brough-t by means of -the hois-ting devices in-to -the desired posi-tion, wi-th the links being moved on the arc of a circle outside and over the pulley which was the discharging one up to now. A-t -the same time, the deflec-tion pulley arranged at the other end of the rocker beam is moved by -the links into the appropria-te position, whereby -the conveyor belt is redirec-ted so as to move away from what was -the discharge pulley up to now (German Pa-tent No. 1,211,531). In this known proposal, the belt tension forces act continuously on -the hois-ting devices. Apart from that, the use of link systems is undesirable.
The present invention has for i-ts objec-t to arrange a tripper so tha-t changing the belt loop can be effected reliably and quickly with only li-t-tle slack occurring and with the supporting sys-tem being loaded only in a relatively short time by -the bel-t tension forces.
This objec-t is achieved according to the inven-tion in -tha-t the axes of the deflec-tion pulleys on the rocker beam are guided in -two pairs of slots provided a-t opposi-te ends in the s-truc-ture of the tripper and in -tha~t -the -two addi-tional deflection pulleys are either arranged both on the structure of -the tripper at a constan-t heigh-t or in that only the deflec-tion pulley used during s-tacking is a-t a con-s-tan-t height whereas the o-ther deflec-tion pulley is arranged variably for height on the structure of -the -tripper. As a resu~L-t of -these features, -the discharge pulley is au-toma-tically guided around -the a~socia-ted deflection pulley (snub pulley), -the leng-th of -the bel-t remaining subs-tan-tially unchanged and -the bel-t -tension forces remaining mos-t of -the -time inside -the suppor-ting sys-tem wi-th -the hois-ting devices being loaded only a very short time. The change-over opera-tion can be carried ou-t in a short period of -time with a high degree of reli-ability.
~ principal objec-t is -to provide a variable belt loop in a tripper of a reversible conveyor sys-tem comprising: a rocker beam having a deflection pulley a-t each of i-ts ends, said rocker beam being connec-ted to a pair of hois-ting devices on -the -tripper; said belt being guided underneath the end of the rocker beam which has been elevated by one of said hoising devices; a pair of arcuately slotted guide members at each end of -the rocker beam are adapted -to guide the axles of the deflection pulleys at each end of said rocker beam; said deflec-tion pulleys being arranged adjacent each end of said rocker beam a-t a prede-termined heigh-t.
A -typical embodimen-t of -the invention is shown schema-tically in ~the accompanying drawing in which:
Figure 1 is a side elevation of the -tripper in -the s-tacking mode;
Figure 2 is a side eleva-tion of the -tripper in -the reclaim-ing mode;
Figure 3 is a side elevation showing a detailed varian-t of the arrangement -to vary -the height of one of -the def:Lection pulleys together with the tripper; and Figure 4 shows one of -the discharge pulleys, partially sec-tioned.
The -tripper is formed with a s-truc-ture 1 as well as -travel mechanisms 2 running on rails on bo-th sides of -the conveyor line.
Arranged on -the struc-ture 1 are two alternately operable hoisting devices 3, L~ whose lifting elemen-ts 5, 6 (e.g. ropes) are a-t-tached to a rocker beam 7. The rocker beam 7 is provided a-t each end wi-th a deflec-tion pulley 8 and 9 respectively and suppor-ts -the idlers 10 carrying the reversib:Le bel-t 11. Each deflection pulley 8 and 9 has on i-ts axle -two rolling elemen-ts, preferably guide rollers 2~, fit-ted in a manner ]cnown per se a-t i-ts two ends which are guided in -two ~:`
arcua-tely slo-t-ted guides 12, 13 fixed opposi-te each o-ther in the s-tructure 1. The curve guidance o:F -the slot-ted guides is such -tha-t the deflection pulleys 8, 9 can be swung pas-t -the deflec-tion pulley 16, 17 and -that a minimum of slack occurs as -the change-over from one mode to the other is effec-ted.
The belt 11 is fur-thermore -taken around -the deflection pulleys 14, 15 at -the ends of -the conveyor line as well as - depending on the direction of delivery - around the deflection pulleys 16 or 17 respectively. The deflec-tion pulley 16 which is in use for reclaiming is arranged a-t a fixed heigh-t in the s-tructure ] of the -tripper. The deflection pulley 17 which is effective for s-tacking is arranged at a fixed height in structure 1 in the representa-tions of Figures 1 and 2;
to effect the change-over for s-tacking, the idler table 18, which can be raised and lowered, is lifted from -the posltion shown in Figure 1 into -the position shown in Figure 2. In the variant shown in Figure 3, the idler -table 18 (Figure 3) is at a fixed height and -the de:Flec-tion pulley 17 is moun-ted at the front end of a fulcrum lever 19 which is pivoted on the structure 1 and whose rear end is engaged by a pivo-ting drive 20 which is connec-ted between -the lever 19 and a sui-t-able abu-tment of the structure 1.
The hois-ting devices 3, 4 may take the form of, say, winches or hydraulic pis-ton-cylinder uni-ts.
If -the rocker beam 7 is -to be changed from -the posi~tion shown in Figure 1 in-to -the posi-tion shown in Figure 2, -the hois-ting dcvice 4 is opera-ted in the lifting direction, whereas -the hois-ting device 3 is opera-ted in a manner permi-t-ting the hois-ting device -to yield. The deflection pulley 3 is -then -taken au-toma-tically pas-t -the deflection pulley 16 un-til i-t has reached -the lower end of -the associa-ted pair of slo~ts 12. A-t -the same -time, the de:Flection pulley 9 is pulled in the curved slo-ts in -the pair of slo-t-ted pieces 13 in-to i-ts upper position. In -the variant illus-tra-ted by Figures 1 and 2, the idler table 18 is raised un-til its idlers con-tac-t the underside of the belt. In -the variant shown in Figure 3, the deflection pulley 17 is swung downwards until it contac-ts the upper side of the belt.
In the operating position 'stacking" shown in Figure 1, the material to be handled is discharged in a manner known per se from the belt 11 via a chute 21 onto the belt of an inclined conveyor 22 which takes it to the boom conveyor of a combination unit. In the operating position "reclaiming-' illustrated in Figure 2, the bulk material coming from the combination unit is -transferred in a manner known per se onto -the belt 11 whose direction of delivery has been reversed now and conveyed onwards in the direction indica-ted by the arrows in Figure 2, the material passing from the deflection pulley 9 via a chute 23 onto the belt 11 in -the area of the idler table 18 and eventually to its destina-tion.
Claims (2)
1. A variable belt loop in a tripper of a reversible conveyor system comprising:
a rocker beam having a deflection pulley at each of its ends, said rocker beam being connected to a pair of hoisting devices on the tripper;
said belt being guided underneath the end of the rocker beam which has been elevated by one of said hoisting devices;
a pair of arcuately slotted guide members at each end of the rocker beam are adapted to guide the axles of the deflection pulleys at each end of said rocker beam;
said deflection pulleys being arranged adjacent each end of said rocker beam at a predetermined height.
a rocker beam having a deflection pulley at each of its ends, said rocker beam being connected to a pair of hoisting devices on the tripper;
said belt being guided underneath the end of the rocker beam which has been elevated by one of said hoisting devices;
a pair of arcuately slotted guide members at each end of the rocker beam are adapted to guide the axles of the deflection pulleys at each end of said rocker beam;
said deflection pulleys being arranged adjacent each end of said rocker beam at a predetermined height.
2. A variable belt loop in a tripper of a reversible conveyor system according to claim 1, one of said deflection pulleys being selectively adjustable in height as said rocker beam is reversed from one direction of delivery to the other.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP3108019.7 | 1981-03-03 | ||
| DE19813108019 DE3108019C2 (en) | 1981-03-03 | 1981-03-03 | Changeable conveyor belt loop on a tripper car of a reversible conveyor belt system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1181028A true CA1181028A (en) | 1985-01-15 |
Family
ID=6126223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000397421A Expired CA1181028A (en) | 1981-03-03 | 1982-03-02 | Variable belt loop on a tripper in a reversible conveyor system |
Country Status (3)
| Country | Link |
|---|---|
| AU (1) | AU8101282A (en) |
| CA (1) | CA1181028A (en) |
| DE (1) | DE3108019C2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3317759A1 (en) * | 1982-05-18 | 1983-11-24 | Tatabányai Szénbányák, 2800 Tatabánya | Conveyor with modifiable length and method for carrying out the modification of length |
| DE4208652C2 (en) * | 1992-03-18 | 1996-05-30 | Man Takraf Foerdertechnik Gmbh | Belt conveyor for bulk goods |
| CN107324080B (en) * | 2017-06-29 | 2019-11-12 | 黑龙江省农副产品加工机械化研究所 | A kind of corn ear seed drying storehouse homogenizing device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1179508B (en) * | 1962-11-15 | 1964-10-08 | Beteiligungs & Patentverw Gmbh | Conveyor goods drop device on a conveyor belt |
| DE1211531B (en) * | 1965-03-17 | 1966-02-24 | Beteiligungs & Patentverw Gmbh | Changeable belt loop in a conveyor belt system |
| DE1756726A1 (en) * | 1968-07-03 | 1970-06-11 | Ver Flugtechnische Werke | Device for dropping the material to be conveyed from a conveyor |
-
1981
- 1981-03-03 DE DE19813108019 patent/DE3108019C2/en not_active Expired
-
1982
- 1982-03-02 AU AU81012/82A patent/AU8101282A/en not_active Abandoned
- 1982-03-02 CA CA000397421A patent/CA1181028A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| AU8101282A (en) | 1982-09-09 |
| DE3108019C2 (en) | 1983-04-07 |
| DE3108019A1 (en) | 1982-09-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR0163060B1 (en) | Device for transferring the workpiece from the first machine to the second machine | |
| EP0212858B1 (en) | Conveyor or elevator system | |
| US4978000A (en) | Conveyor system including discharge pulley | |
| US4303363A (en) | Work facilitating apparatus for conveying building material from a higher to a lower level | |
| GB2125754A (en) | Improvements in or relating to a conveyor system | |
| EP1888435B1 (en) | Belt conveyor and processing apparatus | |
| HU190542B (en) | Transporting respectively pickup-chain apparatus for track-constructing machines | |
| US4014389A (en) | Endless ballast conveyor chain | |
| HU209629B (en) | Transporting- respectively scraper-chain arrangement for track-building machines | |
| US3700120A (en) | Apparatus for collecting and discharging lumber | |
| CA1181028A (en) | Variable belt loop on a tripper in a reversible conveyor system | |
| CN114313774B (en) | Material processing device | |
| CA2024522A1 (en) | Chain conveyor and pallet | |
| GB2257680A (en) | Conveying equipment. | |
| US3756369A (en) | Apparatus for stacking and reclaiming bulk material | |
| US4121724A (en) | Apparatus for removing bulk material from a dump or stockpile | |
| US3500565A (en) | Conveyor system having plural unloading stations | |
| US4522297A (en) | Transporter for heavy loads | |
| EP0569073B1 (en) | A conveyor | |
| KR20020018857A (en) | Device for moving a tail belt of reversible belt conveyor | |
| US3770099A (en) | Scraper-extractor | |
| GB1121811A (en) | Shipboard conveying apparatus | |
| SU1092275A1 (en) | Delivery headstock of belt conveyer of open-mine machine | |
| US4094419A (en) | Handling plant for dumping and discharging bulk materials | |
| US20250243633A1 (en) | Slipform paver |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEC | Expiry (correction) | ||
| MKEX | Expiry |