WO2001012534A1 - Supporting structure for a continuous conveying installation - Google Patents
Supporting structure for a continuous conveying installation Download PDFInfo
- Publication number
- WO2001012534A1 WO2001012534A1 PCT/DE2000/002639 DE0002639W WO0112534A1 WO 2001012534 A1 WO2001012534 A1 WO 2001012534A1 DE 0002639 W DE0002639 W DE 0002639W WO 0112534 A1 WO0112534 A1 WO 0112534A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wedge
- belt
- support frame
- support
- roller
- Prior art date
Links
- 238000009434 installation Methods 0.000 title abstract 2
- 125000006850 spacer group Chemical group 0.000 claims description 32
- 239000000463 material Substances 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 claims description 2
- 239000002131 composite material Substances 0.000 claims 1
- 239000000969 carrier Substances 0.000 description 4
- 239000000725 suspension Substances 0.000 description 3
- 238000000418 atomic force spectrum Methods 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 238000012876 topography Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000011089 mechanical engineering Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000003351 stiffener Substances 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 238000004073 vulcanization 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
- B65G21/00—Supporting or protective framework or housings for endless load-carriers or traction elements of belt or chain conveyors
- B65G21/02—Supporting or protective framework or housings for endless load-carriers or traction elements of belt or chain conveyors consisting essentially of struts, ties, or like structural elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G21/00—Supporting or protective framework or housings for endless load-carriers or traction elements of belt or chain conveyors
- B65G21/02—Supporting or protective framework or housings for endless load-carriers or traction elements of belt or chain conveyors consisting essentially of struts, ties, or like structural elements
- B65G21/06—Supporting or protective framework or housings for endless load-carriers or traction elements of belt or chain conveyors consisting essentially of struts, ties, or like structural elements constructed to facilitate rapid assembly or dismantling
-
- 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
- B65G39/00—Rollers, e.g. drive rollers, or arrangements thereof incorporated in roller-ways or other types of mechanical conveyors
- B65G39/10—Arrangements of rollers
- B65G39/12—Arrangements of rollers mounted on framework
Definitions
- the invention relates to a supporting structure for a continuous conveyor system equipped with a driven belt strap.
- Continuous conveyor systems with an endless belt made of steel sides or textile fabrics, which run over rollers and are embedded in rubber-elastic materials, are suitable for conveying bulk and bulk goods that are moved horizontally or diagonally up or down using this system.
- a drive for the belt is provided at one end.
- conveyor systems have drives at both ends, in rare cases also intermediate drives, so-called carrying belt drive belt drives, between the two ends.
- carrying belt drive belt drives between the two ends.
- the number of the latter drives is limited to a maximum of five intermediate drives.
- the strength of the webbing depends, among other things. on the length of the transport route, the center distance of the support or drive rollers used, the structure of the conveyor system and the performance of the drives used. Conveying capacity and transport speed of the conveyor system determine the belt width.
- the strength limits of the belt and different conveyor topographies mean that the conveyor systems are usually divided, i.e. that several conveyor systems are connected in series, with the goods being thrown onto the conveyor belt of the next conveyor system at the end of one conveyor system.
- the supporting structure according to claim 1 which is characterized according to the invention in that it is a self-supporting spatial framework.
- the advantage of such a scaffolding is that all the forces acting on the individual parts of the scaffolding, including the forces originating from the conveyor belt drive and the driven belt, are absorbed by the truss network, so that only the weight of the conveyor system becomes effective externally.
- the spatial truss can be modularly built in any desired length and extended if necessary. One uses Truss parts, in which the vertical struts are equally spaced, the length of the supporting structure is an integral multiple of this spacing.
- the spatial framework has the shape of a rectangular tube, which is extremely resilient in all load directions.
- the corresponding endless belt webbing is assembled from a large number of individual webbing pieces by connecting elements.
- Respective belt pieces of, for example, a length of 100 m can be joined at their ends by means of a releasable connection, for example belt connecting hooks, or by means of a corresponding vulcanization to form an endless belt belt length.
- the technical limits are set by the belt strength. With only a single drive, all the forces introduced when accelerating, braking or in stationary operation must be absorbed by the belt, which must have a corresponding strength against breakage. In order to contain the forces mentioned, several drives are used, for example a head drive in conjunction with a rear drive and / or intermediate drives.
- individual drive powers are selected that are significantly larger than 100 kW.
- this leads to long axles of, for example, 150 m for each intermediate drive, so that the power transmitted per meter of intermediate drive is approximately 1 kW.
- one uses the n-times number of intermediate drives on the same section on which the forces only had to be introduced by a single drive it results from this that each intermediate drive only has 1 / n of the total force must provide.
- the strength of the belt must only be 1 / n.
- the difference in distance between two adjacent intermediate drives is determined by the topography, that is to say that the distance between the intermediate drives can be greater in the case of a horizontal course than in the case of an inclined course.
- the truss preferably has vertically aligned support frames arranged to the left and right of the webbing, which consist of a horizontally positioned top flange, a horizontally positioned bottom flange, vertically oriented struts and diagonally arranged struts that form a flat (flat) truss structure Form absorption of all vertical forces acting on the scaffolding.
- the two spaced, vertically aligned planar frameworks are connected to one another either via spacers or roller carriers, the spacers or the roller carriers being fastened by means of wedge-nose pliers arranged at their ends, which grip around perforated disks arranged on the framework and are positively and non-positively connected to one another by a driven-in wedge are connected.
- the spacers and roller supports are aligned vertically to the side, parallel aligned flat trusses (with the exception of a possible curve, which will be discussed later).
- the wedge attachment used has the advantage of simple assembly and disassembly. In principle, however, other connection options for the individual truss components at the nodes can also be used.
- holders for receiving rollers can be attached to the lower belt, which carry the lower belt.
- the upper chord and the lower chord of a flat supporting frame each have wedge-type pliers elements at their ends, which engage around perforated disks arranged on vertical struts arranged at the ends, with which they are positively and non-positively connected via a driven-in wedge.
- spacers of another next support structure can be attached to the relevant perforated disks of an already existing support structure, so that the two support structures form an extended unit.
- Said perforated disk preferably has a central opening, which is adapted to the cross-sectional shape of a strut, and four further slots, each offset by 90 ° to one another, through which a wedge can be inserted.
- the perforated disk has an essentially square shape, in which the slots mentioned are each arranged in the corner regions.
- a strut can thus be inserted or a perforated disc can be pushed onto a strut, so that the perforated disc itself extends in a collar-shaped manner around the strut.
- the slots are used to receive a wedge, which forms the connecting means of the perforated disc with the wedge pliers element.
- the wedge pliers element preferably has a head with a groove, the width of which is adapted to the thickness of a perforated disk.
- the head also has continuous openings on both sides in the groove walls, which are congruent with the perforated disk slots when the perforated disk is inserted into the groove, so that the wedge-nose pliers element is non-positively connected to the perforated disk via an inserted wedge.
- the angle of inclination of the wedge as well as bevels in the perforations of the perforated disc and the wedge pliers element with their inclined angles are preferably chosen such that the angle of inclination is smaller than the angle of friction of the materials used. In this way, a self-locking wedge connection is created.
- a plurality of vertically arranged connecting elements or struts have an eyelet at the upper end, via which the entire supporting structure can be suspended without a floor.
- the suspension must be able to withstand the weight of the entire conveyor system (supporting frame with drives and conveyor belt) including any conveyed loads, but no further forces.
- a plurality of vertically arranged connecting elements are preferably designed to be insertable into supports at the bottom.
- the upper belt carrier rollers are each mounted on both sides in a carrier piece which has a notch for receiving the carrier roller shaft, of which at least one carrier piece end, preferably both carrier piece ends, are connected to a spacer.
- the bearing for the idler roller is lowered relative to the roller carrier receptacle, so that when the roller is released, the webbing is supported by the roller carrier itself. This measure effectively prevents damage to the webbing.
- one-piece angle connections are used as connecting means, which consist of two perforated disks, the axes of which are at an obtuse angle are inclined.
- the angled connections have two openings adapted to the cross section of vertical struts and can be slid over adjacent supports, which are arranged offset from one another in a corresponding manner by the angular dimension and the spacing of the perforated disc opening. Concerning angular connections are then arranged at opposite points of the vertical framework.
- the relevant angle which the corresponding axes of the interconnected perforated disks assume, can be, for example, 5 °. If a greater curvature is desired, several pairs of struts, which are connected to one another by corresponding angle connections, can be arranged one behind the other.
- the general use of intermediate drives which will be dealt with, lower the force level effective in the belt accordingly, so that the movement of the belt in the direction of the center of curvature is counteracted and in the curve area a horizontal guidance of the belt strap is possible without increasing the inside radius of the curve. This can also be taken into account in particular by the fact that existing intermediate drives are not arranged too close to the curved regions of the supporting structure and that a belt strap is selected in accordance with low rigidity and strength.
- side walls are provided which consist of an upper belt, a lower belt and an intermediate middle belt and which, preferably between the middle belt and the upper belt, have a receiving device for one side of the Wear drive or deflection roller.
- Such sidewalls are on opposite overlying sides of the vertically arranged flat surface structures. The opposite side walls are preferably connected to one another by the spacers already described.
- each intermediate drive is integrated into the supporting structure according to the respective tractive effort or power requirement of a partial length of the overall conveyor system. It is useful that each intermediate drive is equipped with the same power. In a horizontally arranged overall conveyor system, the distance between the individual intermediate drives is therefore the same. However, if the overall conveyor system has horizontal, rising and falling sections for topographical reasons, the distance between the intermediate drives is shorter in the inclined sections.
- the modular design of the supporting structure according to the invention preferably allows the connection of several individual supporting structures to form a correspondingly extended supporting frame.
- La is a schematic representation of a structure frame
- Fig. Lb is a schematic representation of a used
- Lc is a schematic representation of a roller carrier for attachment to an upper chord
- FIG. 1d a spacer with ends arranged
- Fig. 2a shows the sectional view of a double spacer
- Fig. 2b shows the sectional view of a one-sided
- 3c is a side view of a wedge pliers element
- Fig. 3d is a plan view of a connection between one
- 4a is a plan view of a horizontal angle connection
- 4b is a side view of this angular connection with two vertical struts
- 4c is a plan view of a vertical angular connection upwards
- 4d is a side view of this angular connection with two vertical struts
- 4e is a plan view of an angular connection vertically downwards
- FIG. 5 is a side view of a side cheek as a carrier for a deflection or drive roller
- Fig. 6a, b each cross sections of the structure
- Fig. 7 is a side view of an intermediate drive
- FIG. 8a to c each schematic side views of a complete support structure with drive, deflection and intermediate drives (Fig. 8b, c).
- Trusses are basically known from mechanical engineering, as is the connection of the individual truss elements, so that reference can be made to engineering expertise. What is new, on the other hand, is the use of such a framework for supporting scaffolding and integrated drives for continuous conveyor systems.
- the support structure 100 shown in FIG. 1 has an upper chord 101, a lower chord 102, struts 103 to 112 arranged perpendicular to the straps 101 and 102, and diagonal struts 113 to 117, which together form a flat truss structure which, with a large span, supports the vertical loads of all weight forces can record.
- the ends of the upper chord 101 and the lower chord 102 have wedge pliers elements 118 to 121 which are fastened with the connecting struts shown in FIGS.
- the lower belt 102 is equipped between the vertical struts 104 to 112 with holders 122 to 125, which can accommodate the ends of the rollers carrying the lower belt.
- the vertical struts 101 to 112 and the lower flange have perforated disks 126 to 134, which are explained in more detail with reference to FIG. 3d.
- the length of the Structure frame 100 as a scaffolding is limited by the line load acting on it, which it must carry from a static point of view.
- a flat support frame 100 is arranged to the left and right of the belt strap. These structural frames 100 are fastened perpendicular to them either with spacers 150 (see FIG. 1b) or the roller carriers 160 (see FIG. 1c) by means of wedge-type pliers elements 151, 152, 161 and 162 on perforated disks 126 to 134 by means of a wedge.
- the roller carrier 160 shown in FIG. 1 c accommodates all mounting points 163 to 166 for the rollers carrying and guiding the upper belt webbing, three rollers being used, as shown in FIG. 6 a, of which the two outer rollers form an angle to the centrally arranged roller form. These roles form the trough for a webbing. Possibly. the trough angle can be changed using the adjustable support brackets 167 and 168.
- the roller carrier 160 likewise has wedge-type pliers elements 161 and 162 on both sides. The spatial truss network can be seen from FIGS. 6a and b.
- FIG. 1d shows a spacer 170 which preferably connects the side cheeks 500 shown in FIG. 5 for stiffening.
- the spacer 170 is equipped with the holders 173, 174, 176 and 177 to accommodate the ends of the rollers carrying the lower webbing.
- a perforated disk 175 is preferably in the corresponding position in the middle of the spacer 170 to the perforated disc 130 of the support structure 100 according to FIG.
- a spacer 150 of FIG. 1b By means of a spacer 150 of FIG. 1b, a kink-proof connection is created by the wedge pliers elements 151 and 152.
- the connection to the side cheeks 500 of FIG. 5 is made by means of the wedge pliers elements 171 and 172.
- FIG. 2a shows the roller carrier 160 in the embodiment as a double spacer 202, in which the middle roller 204 is arranged between the spacers 203 and 205.
- 2b shows the embodiment with a one-sided spacer 211, in which the middle roller 204, viewed in the transport direction, is arranged in front of or behind the spacers 208.
- the arrangement according to FIG. 2b allows a reduced roller spacing with unchanged design of the supporting frame 100 to which parts of the overall system are desired or necessary for various reasons.
- the reduction of the distance between adjacent rollers in the direction of transport is often desirable in the areas of the feed points for the bulk and / or bulk goods.
- the mounting points 207 and 212 for the support rollers 204 of the upper belt are sunk or arranged outside the area of influence of the belt. This has the advantage that if one or more reels are lost from the reel support 160, the belt webbing in motion does not find any sharp edges on which it can be slit open or destroyed in the longitudinal direction. In the event of loss of one or more roles of the reel carrier, the webbing clings to the contour of the reel carrier 160.
- FIG. 3a shows a connecting element 300 for connecting adjacent supporting frame 100.
- two perforated disks 301 and 302 surrounding connecting element 300 are firmly connected to supporting frame 100.
- the perforated disc has a square Shape.
- the perforated disk has a central, in the present case circular opening 304, the radius of which corresponds to the radius of the connecting element 300 or is the same size except for a necessary play. It has four openings 311 to 314, so that up to four wedge pliers elements 320 can be plugged onto a perforated disk in a knot-shaped manner and at right angles to one another.
- Wedge pliers element 320 has a head with a groove, the width of which corresponds to the thickness of perforated disk 301. Furthermore, this head has continuous openings through which a wedge 325 can be pushed. If the perforated disk is inserted into the groove of the head of the wedge pliers element 320 in the manner shown in FIG. 3d, the opening 313 is congruent with the above-mentioned openings in the wedge pliers head, so that a pushed-through wedge 325 securely connects a wedge pliers element to the perforated disk and thus creates with a connecting element 300.
- the upper end of the connecting element 300 can have a suspension point 303 in the form of an eyelet, by means of which the entire conveyor system can be suspended from the floor at a distance from the connecting elements 300.
- the lower end of the connecting elements 300 can be designed such that it can be inserted into commercially available supports, so that an elevation of the conveyor system is also possible if necessary.
- 3b shows a connecting element 330, which receives three perforated disks 331, 332 and 333, which can serve as connecting means for two spacers 150, two supporting frames 100 and / or a side cheek 500, as shown in FIG. 5.
- FIG. 4a shows an angle connection 403, by means of which two struts 401, 402 (see FIG. 4b) can be connected.
- this angular connection consists of two perforated disks and has two circular bores 410 and 411, which are spaced apart and whose radius is chosen to be equal to the radius of the struts 401 and 402.
- the angle connection 403 has slots 404 to 409 for receiving a wedge 325.
- the axes 412 and 413 are inclined at an angle to one another, so that two support structures 100 provided with end supports 401 and 402 with corresponding wedge-type pliers connection via the slots 406 and 409 in a corresponding manner Are arranged pivoted by an angle ⁇ .
- the respective slots 405 and 407 or 404 and 408 are arranged at right angles to the slots 406 and 409, so that a right-angled connection to horizontal spacers is ensured in the region of each of the angled supporting structures 100. If the angle shown is not sufficient for the desired curvature of the conveyor line, a plurality of angle connectors 403 with corresponding supports 401, 402 can optionally be arranged one behind the other, so that the desired circular arc is formed approximately by a corresponding partial polygon.
- Fig. 4c discloses an angular connection 423, the individual perforated disks are connected to each other at the line 426 in an angled position, so that the axes 424 and 425 in question are pivoted at an angle to one another, so that with such an angular connection, with a relative tilting of the Support 401 goes hand in hand, an upward inclination of the supporting structure (from left to right) can be realized.
- the angular connection 433 which consists of two perforated disks connected to the line 436 and by means of which the axes 434 and 435 are tilted appropriately to cause the supporting structure to tilt downwards.
- FIG. 5 shows the side view of a side cheek 500, which is used to hold drive or deflection rollers.
- the side wall consists of an upper belt 501, a middle belt 502 and a lower belt 503. Between the upper belt 501 and the middle belt 502 there is the receiving device 504 for one side of the respective schematically indicated drive or deflection roller 505.
- the belts 501 to 503 and the receiving device 504 are connected to one another by vertical supports 506 and 507 in such a way that the ends of the individual belts protrude through the wedge pliers elements 508 to 513 arranged there.
- the side wall 500 is arranged at the same height of the transport device on the left and right at the end or between two flat trusses 100.
- Opposing side walls 500 are connected to one another by means of spacers 150 in accordance with the embodiment described in FIG. 3.
- the webbing piece 512 is indicated schematically.
- the tensioning device and further aids which are known in principle according to the prior art have been omitted.
- FIG. 6a shows a rectangular tubular truss structure which is formed from two vertical planar trusses 100 according to FIG. 1 and spacers 150 and roller carriers 160 which are connected to one another in the manner described above. In the present case, the webbing is guided through the angled rollers 601 to 603.
- FIG. 6b shows a cross section of the truss assembly 630 in a sectional plane in the region of side walls 500, in which in addition, a further spacer 150 is provided for the side cheek connection in the area of the central belt plane.
- Sidewalls 500 which are installed in the middle of the supporting frame, serve to accommodate an intermediate drive 520 shown in FIG. 7, which has additional spacers 150 and stiffeners 170.
- the webbing sags between the roller spacers used (without the intermediate drive), the sag being determined by the belt pretension and the distance between the roller spacers. This sag can be used as a normal force component on the drive belt of an intermediate drive, which delivers a corresponding power transmission to the belt.
- FIGS. 8a to c show side views of different continuous conveyors which are assembled from the individual elements described above.
- the length of the conveyor system is formed by the series connection of several, here three trusses 100, which are connected to one another via respective supports 300.
- side walls 500 are arranged for receiving a drive drum and a deflection drum, which drive or deflect the endless belt webbing.
- a plurality of spatial trusses are provided between the drive 730 arranged at the end and the turn 720, which have respective intermediate drives 721 to 728.
- the large number of intermediate drives used serves to minimize the maximum forces acting on the endless conveyor belt.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structure Of Belt Conveyors (AREA)
- Escalators And Moving Walkways (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002380650A CA2380650A1 (en) | 1999-08-18 | 2000-08-04 | Support frame for a continuous conveyer |
AU75050/00A AU7505000A (en) | 1999-08-18 | 2000-08-04 | Supporting structure for a continuous conveying installation |
EP00963889A EP1204577A1 (en) | 1999-08-18 | 2000-08-04 | Supporting structure for a continuous conveying installation |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19939197.1 | 1999-08-18 | ||
DE1999139197 DE19939197A1 (en) | 1999-08-18 | 1999-08-18 | Support frame for a continuous conveyor system |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001012534A1 true WO2001012534A1 (en) | 2001-02-22 |
Family
ID=7918820
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2000/002639 WO2001012534A1 (en) | 1999-08-18 | 2000-08-04 | Supporting structure for a continuous conveying installation |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1204577A1 (en) |
AU (1) | AU7505000A (en) |
CA (1) | CA2380650A1 (en) |
DE (1) | DE19939197A1 (en) |
WO (1) | WO2001012534A1 (en) |
ZA (1) | ZA200202139B (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10321736B3 (en) | 2003-05-14 | 2004-12-16 | Siemens Ag | Modular system for a conveyor for longitudinal or transverse conveying of general cargo carriers |
CN107284948A (en) * | 2017-06-25 | 2017-10-24 | 北京大唐恒通机械输送技术有限公司 | Long range pipe conveyer adhesive tape installation method based on split type truss |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3625339A (en) * | 1968-05-31 | 1971-12-07 | Barber Greene Co | Removal and conveying of material from storage piles of excavations |
US4880109A (en) * | 1986-11-21 | 1989-11-14 | Mackina Westfalia S.A. | Chain hauled conveyor belt |
US5127757A (en) * | 1989-10-19 | 1992-07-07 | Ruth Langer | Connecting head for scaffold system |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE622057C (en) * | 1934-04-29 | 1935-11-18 | August Hermes | Belt conveyor with a band structure consisting of movably connected individual fields |
DE622055C (en) * | 1934-07-27 | 1935-11-18 | Karl Brieden | Connection for conveyor belt cover plates |
DE804540C (en) * | 1948-10-02 | 1951-04-26 | Erboe Maschb Erley & Boenninge | Support frame for conveyor belts |
DE808693C (en) * | 1949-09-29 | 1951-07-19 | Carl Schenck Maschinenfabrik D | Portable and mobile belt conveyor |
US2793738A (en) * | 1953-11-27 | 1957-05-28 | Lewis C Erickson | Knock-down conveyor gallery |
DE1703677U (en) * | 1955-05-13 | 1955-07-28 | Heinrich Schaefer | SCREWLESS TRAVERSE BRACKET FOR LOWER BELT CONVEYOR. |
DE1797649U (en) * | 1959-07-04 | 1959-10-08 | Bruno Hartmann | BAN CONVEYOR WITH A LIGHTWEIGHT CONSTRUCTION. |
GB1363839A (en) * | 1970-07-30 | 1974-08-21 | Dowty Meco Ltd | Belt conveyor |
AT318478B (en) * | 1971-11-02 | 1974-10-25 | Doubrava Kg | Support frame for belt conveyor |
GB1585131A (en) * | 1978-03-29 | 1981-02-25 | Fyson & Son Ltd C J R | Conveyors |
PL157243B1 (en) * | 1987-10-12 | 1992-05-29 | Dumping conveyor outrigger |
-
1999
- 1999-08-18 DE DE1999139197 patent/DE19939197A1/en not_active Withdrawn
-
2000
- 2000-08-04 CA CA002380650A patent/CA2380650A1/en not_active Abandoned
- 2000-08-04 EP EP00963889A patent/EP1204577A1/en not_active Withdrawn
- 2000-08-04 AU AU75050/00A patent/AU7505000A/en not_active Abandoned
- 2000-08-04 WO PCT/DE2000/002639 patent/WO2001012534A1/en not_active Application Discontinuation
-
2002
- 2002-03-15 ZA ZA200202139A patent/ZA200202139B/en unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3625339A (en) * | 1968-05-31 | 1971-12-07 | Barber Greene Co | Removal and conveying of material from storage piles of excavations |
US4880109A (en) * | 1986-11-21 | 1989-11-14 | Mackina Westfalia S.A. | Chain hauled conveyor belt |
US5127757A (en) * | 1989-10-19 | 1992-07-07 | Ruth Langer | Connecting head for scaffold system |
Also Published As
Publication number | Publication date |
---|---|
EP1204577A1 (en) | 2002-05-15 |
DE19939197A1 (en) | 2001-02-22 |
ZA200202139B (en) | 2002-10-09 |
CA2380650A1 (en) | 2001-02-22 |
AU7505000A (en) | 2001-03-13 |
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