EP0028930A1 - Continuous excavating apparatus - Google Patents
Continuous excavating apparatus Download PDFInfo
- Publication number
- EP0028930A1 EP0028930A1 EP80303996A EP80303996A EP0028930A1 EP 0028930 A1 EP0028930 A1 EP 0028930A1 EP 80303996 A EP80303996 A EP 80303996A EP 80303996 A EP80303996 A EP 80303996A EP 0028930 A1 EP0028930 A1 EP 0028930A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- frame
- excavating
- buckets
- excavating apparatus
- continuous
- 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.)
- Granted
Links
- 239000000463 material Substances 0.000 claims description 20
- 239000000969 carrier Substances 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims 1
- 238000005065 mining Methods 0.000 abstract description 6
- 230000004075 alteration Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C31/00—Driving means incorporated in machines for slitting or completely freeing the mineral from the seam
- E21C31/10—Driving means incorporated in machines for slitting or completely freeing the mineral from the seam for slewing parts of the machines
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C27/00—Machines which completely free the mineral from the seam
- E21C27/20—Mineral freed by means not involving slitting
- E21C27/30—Mineral freed by means not involving slitting by jaws, buckets or scoops that scoop-out the mineral
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
- E21C35/20—General features of equipment for removal of chippings, e.g. for loading on conveyor
Definitions
- the present invention relates generally to powered excavating apparatus and more particularly to a combined excavating and conveying apparatus arranged to dig and convey large quantities of material such as ore in a mining operation.
- the present invention seeks to overcome the aforementioned problems by placing counter weights well to the rear on a mobile frame of a continuous excavating apparatus and well outwardly laterally of that mobile frame. According to the invention this is accomplished by including in the mobile frame, heavy elongated frame members rigidly joined to form an elongated channel, a ginbal is supported between upper and lower frame members for pivotal motion about a substantially upright axis adjacent one end of the frame, and an excavating boom mounted for pivotal adjustment about a transverse axis from said gimbal.
- the present invention also envisages an endless bucket line which comprises a plurality of excavating buckets, a hinge pin commonly connecting adjacent buckets for pivotal motion, and at least two pairs of sprockets arranged to engage opposite ends of said line.
- the continuous excavating apparatus has a minimum profile or contour so that it can be utilized in a confined area such as a mining tunnel, and yet is capable of providing the requisite excavating forces and of conveying the excavated material at a relatively high rate of speed, approaching 100 tons per hour.
- the elongated frame includes very heavy side walls, preferably in the form of four side plates or walls, each pair of which are welded or otherwise joined at their edges to extend longitudinally in a generally horizontal direction to provide a total mass approaching 50 tons.
- the pairs of side plates are joined by transverse bracing plates in spaced relation to provide a channel or generally box-like configuration which for mobility is supported on mobile support elements such as endless tracks which are preferably disposed below the frame to reduce its lateral dimensions.
- the endless tracks are preferably supported to project forwardly from the front end of the frame which, in turn, extends beyond the rear extremity of the endless tracks, where it mounts an electric motor or other prime mover, which not only is arranged to drive the endless tracks to provide the requisite mobility of the unit but also serves in conjunction with the weight of the frame itself as a counterbalance against the digging forces, which are applied at a spaced distance in front of the forward end of the frame by an excavating boom.
- an electric motor or other prime mover which not only is arranged to drive the endless tracks to provide the requisite mobility of the unit but also serves in conjunction with the weight of the frame itself as a counterbalance against the digging forces, which are applied at a spaced distance in front of the forward end of the frame by an excavating boom.
- the excavating boom is gimbal mounted so as to pivot about a substantially upright axis adjacent the forward end of the frame, enabling lateral swinging motion thereof beyond the lateral contour of the frame, and is also mounted for pivotal adjustment about a transverse axis so that it can be pivoted both upwardly and downwardly beyond the vertical dimensions of the frame, thus enabling a tunneling operation having sufficient lateral dimensions so that the entire machine may be moved therethrough during the continuous excavating and conveying operation.
- the excavating boom conveniently includes spaced side plates that are supported from the mentioned gimbal and carry at their opposite extremities the mentioned sprockets that support the endless bucket line, which is caused to move continuously through actuation by hydraulic motors which are in turn driven by a hydraulic pump connected to the same electric motor.
- the hydraulic bucket line preferably includes buckets with digging or excavating teeth which can be readily replaced and hinges engaging common pivot shafts having enlarged ends which contact the drive sprockets so that during operation, the enlarged shaft ends roll on the sprockets and cause the central portion of the shaft to rotate in contact with the hinges, thus to evenly distribute shaft wear.
- the excavating extremities of the buckets whereat they engage the material to be mined or otherwise excavated move upwardly so that the digging forces are counterbalanced by the entire weight of the frame and other machine elements such as the described motor and endless tracks. Even when the bucket line is angled laterally, the great weight of the opposite side plates functions as an effective counterbalance.
- the buckets are preferably arranged to discharge the excavated material onto one end of an endless conveyor which conveniently extends rearwardly between the frame plates mentioned hereinabove. At its remote end beyond the frame, the conveyor may, in turn, discharge the material into a truck or other suitable receptacle for removal to a processing station or storage.
- the continuous excavating apparatus embodying the present invention includes a main frame 10 having most of its weight in substantially vertical side walls 12, 14, each formed preferably by a pair of continguous plates which are welded or otherwise secured at their front, rear, and the top and bottom edges thereof.
- the frame plates are joined by transverse braces 16, 18 so that the overall configuration of the frame is in the form of a hollow channel or box-like configuration, within which certain additional elements of the apparatus can be housed, as will be explained in detail hereinafter.
- a pair of conventional endless tracks 20 are mounted therebelow in a conventional fashion but at a position so that the endless tracks project at the forward end of the main frame 10 therebeyond but are recessed from the rearward end of the frame for a purpose which will become apparent hereinafter.
- the endless tracks are confined within the lateral contours of the frame so that its overall width is less than five feet and the endless tracks have a height such that, when added to the height of the side plates, provides an overall vertical dimension of less than six feet.
- the entire elongated frame and the mobile carriers therefor can pass readily through a tunnel having lateral dimensions no more than six feet in height and five feet in width.
- an electric motor 22 of appropriate power is mounted at the rearward end of main frame 10 on one of the mentioned transverse braces, the precise drive arrangement to the endless tracks being conventional and thus not described in further detail.
- the side plates 32, 34 of the excavating boom 36 are held in laterally spaced relation by simple rigid metal braces 38 and the outer surfaces thereof mount balls 40, 42 for universal connection to ball sockets 44, 46 at the forward ends of double-acting hydraulic rams 48, 50 whose opposite extremities are universally joined to a forward extension 10a of the main frame 10 by similar ball and socket joints 52, 54 to allow the excavating boom to be adjusted vertically or horizontally through actuation of the hydraulic rams 48, 50 by a hydraulic pump 56 that is driven by the previously described electric motor 22.
- One valve (not shown) is associated in a conventional fashion with each hydraulic ram and is arranged to supply hydraulic pressure to one or the other end of its associated ram so that, as will be apparent, if both valves are open in one direction, both hydraulic rams will extend or retract to raise or lower the excavating boom, whereas on the other hand, if one valve is open in one direction while the other is open in the opposite direction, a lateral motion of the boom will occur; for example, to the phantom-line disposition shown in Figure 2.
- Each pair of sprockets engages the enlarged opposite ends of a hinge pin 68 which is arranged in bridging relationship between the laterally-spaced sprockets to rotatably extend through a piano-hing connection in the form of interdigitated hinges 70, 72 at the front and rear of adjacent excavating buckets 74, which provide the material excavating elements of the unit.
- the enlarged ends of the pin 68 will rotate to provide only rolling friction with the engaged sprocket, thus to reduce sliding friction and extend the useful life of the elements to a considerable extent.
- each hinge pin 68 common to the foremost extremity of one bucket and the rearmost extremity of the adjacent bucket will rotate in the hinges 70, 72, thus to distribute wear and maintain the roundness of the hinge pin and the hinges.
- each tooth includes a tongue and groove connection 78 between it and its supporting element, which in turn facilitates replacement thereof after continued wear over an extended period.
- the line of buckets mounted on the sprockets is arranged for counterclockwise motion, as shown in Figure 1, when driven by a pair of hydraulic motors 80, 82 which are connected to opposite ends of the sprocket-mounting shaft 30 at the inner end of the bucket line by suitable gear reduction units 84, 86, such hydraulic motors each being capable of delivering as much as 150 horsepower when energized by the hydraulic pump 56 driven by the previously described electric motor 22.
- Utilization of the described hydraulic actuating mechanism enables a ready variation in the requisite power dependent upon the resistance of the material being engaged by the line of excavating buckets.
- the buckets engage the material as can be readily visualized by reference to Figure 1, they will be moving in sequence in an upward direction, tending to rotate or pivot the entire machine about a transverse pivot formed at the forward end of the endless tracks. Since this pivot point is forwardly of most of the weight of the heavy frame and the elements mounted thereon, considerable forces may be generated without moving the frame about this transverse axis, thus to assure the requisite application of force during the excavating operation.
- the excavating boom 36 is operating at a lateral angle such as indicated in phantom lines in Figure 2, the reactive force components tending to rotate the main frame 10 about its longitudinal axis will be counterbalanced by the weight of the opposite side wall.
- Material excavated and carried by the excavating buckets will be dumped therefrom as they pass in succession over the rear sprocket 58 onto a suitable endless conveyor 88 which lies thereunder and is mounted for conveyance of material deposited thereon beyond the rear end of the frame at an upper elevation so that the material conveyed on the belt can be dumped into a suitable truck or other receptacle (not shown) for removal and subsequent processing.
- the conveyor 88 is supported between the frame plates and is powered by suitable connection to the motor 22.
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Earth Drilling (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Soil Working Implements (AREA)
- Steroid Compounds (AREA)
- Component Parts Of Construction Machinery (AREA)
Abstract
Description
- The present invention relates generally to powered excavating apparatus and more particularly to a combined excavating and conveying apparatus arranged to dig and convey large quantities of material such as ore in a mining operation.
- In many mining operations, digging or breakout forces in the neighborhood of 200,000 pounds are required, and at the same time, for practical utilization, the excavated material must be removed at rates approaching 100 tons per hour. With existent equipment these two practical requirements are not achieved. For example, mechanical devices such as backhoes and front end loaders could possibly deliver the requisite forces but have not the capacity to remove the material in such large quantities. On the other hand, certain boom-mounted rotary heads can remove the material at adequate rates but are not only incapable of delivering the requisite forces but also establish force components which tend to move the entire machine sideways so as to render its operation impractical.
- Both problems are aggravated when one wishes to perform the excavating and conveying operation in a mining tunnel whose lateral dimensions conventionally are no more than six feet high and five feet wide, since the mentioned breakout or digging forces are sufficient to lift or transversely displace the mobile carrier for the equipment. The problems could be alleviated if it were possible, as in some surface applications, to mount a counterbalance weight behind, and in line with, the digging boom or arm, so as to be capable of swinging therewith. In the confined space of tunnel digging or mining, which the present device wishes to be capable of, such a solution is out of the question.
- The present invention seeks to overcome the aforementioned problems by placing counter weights well to the rear on a mobile frame of a continuous excavating apparatus and well outwardly laterally of that mobile frame. According to the invention this is accomplished by including in the mobile frame, heavy elongated frame members rigidly joined to form an elongated channel, a ginbal is supported between upper and lower frame members for pivotal motion about a substantially upright axis adjacent one end of the frame, and an excavating boom mounted for pivotal adjustment about a transverse axis from said gimbal.
- The present invention also envisages an endless bucket line which comprises a plurality of excavating buckets, a hinge pin commonly connecting adjacent buckets for pivotal motion, and at least two pairs of sprockets arranged to engage opposite ends of said line.
- The continuous excavating apparatus has a minimum profile or contour so that it can be utilized in a confined area such as a mining tunnel, and yet is capable of providing the requisite excavating forces and of conveying the excavated material at a relatively high rate of speed, approaching 100 tons per hour.
- The lateral dimensions of the heavy elongated frame are limited so that it can pass through a tunnel of dimensions no more than six feet in height and five feet in width, yet the frame is of sufficient weight so that experienced forces during the excavating and conveying operations can be accommodated. More particularly, the elongated frame includes very heavy side walls, preferably in the form of four side plates or walls, each pair of which are welded or otherwise joined at their edges to extend longitudinally in a generally horizontal direction to provide a total mass approaching 50 tons. As indicated above the pairs of side plates are joined by transverse bracing plates in spaced relation to provide a channel or generally box-like configuration which for mobility is supported on mobile support elements such as endless tracks which are preferably disposed below the frame to reduce its lateral dimensions. In addition, the endless tracks are preferably supported to project forwardly from the front end of the frame which, in turn, extends beyond the rear extremity of the endless tracks, where it mounts an electric motor or other prime mover, which not only is arranged to drive the endless tracks to provide the requisite mobility of the unit but also serves in conjunction with the weight of the frame itself as a counterbalance against the digging forces, which are applied at a spaced distance in front of the forward end of the frame by an excavating boom.
- As also indicated above the excavating boom is gimbal mounted so as to pivot about a substantially upright axis adjacent the forward end of the frame, enabling lateral swinging motion thereof beyond the lateral contour of the frame, and is also mounted for pivotal adjustment about a transverse axis so that it can be pivoted both upwardly and downwardly beyond the vertical dimensions of the frame, thus enabling a tunneling operation having sufficient lateral dimensions so that the entire machine may be moved therethrough during the continuous excavating and conveying operation.
- The excavating boom conveniently includes spaced side plates that are supported from the mentioned gimbal and carry at their opposite extremities the mentioned sprockets that support the endless bucket line, which is caused to move continuously through actuation by hydraulic motors which are in turn driven by a hydraulic pump connected to the same electric motor.
- Because of the extreme forces of excavation, the hydraulic bucket line preferably includes buckets with digging or excavating teeth which can be readily replaced and hinges engaging common pivot shafts having enlarged ends which contact the drive sprockets so that during operation, the enlarged shaft ends roll on the sprockets and cause the central portion of the shaft to rotate in contact with the hinges, thus to evenly distribute shaft wear.
- The excavating extremities of the buckets whereat they engage the material to be mined or otherwise excavated move upwardly so that the digging forces are counterbalanced by the entire weight of the frame and other machine elements such as the described motor and endless tracks. Even when the bucket line is angled laterally, the great weight of the opposite side plates functions as an effective counterbalance. The buckets are preferably arranged to discharge the excavated material onto one end of an endless conveyor which conveniently extends rearwardly between the frame plates mentioned hereinabove. At its remote end beyond the frame, the conveyor may, in turn, discharge the material into a truck or other suitable receptacle for removal to a processing station or storage.
- The present invention, as briefly summarized hereinabove, will be more fully understood by reference to the following detailed description of the exemplary structure shown in the accompanying drawings wherein:
- Figure 1 is a side elevational view of a continuous excavating apparatus embodying the present invention,
- Figure 2 is a top plan view thereof,
- Figure 3 is a transverse sectional view taken along line 3-3 of Figure 1 illustrating the gimbal mounting of the excavating boom and details of the bucket structure,
- Figure 4 is a fragmentary longitudinal sectional view through the excavating boom illustrating additional details of its construction, and
- Figure 5 is a transverse sectional view taken along line 5-5 of Figure 4 illustrating additional structural details of the excavating boom.
- With initial reference to Figures 1 and 2, the continuous excavating apparatus embodying the present invention includes a
main frame 10 having most of its weight in substantiallyvertical side walls transverse braces - To provide mobility of the heavy elongated
main frame 10, a pair of conventionalendless tracks 20 are mounted therebelow in a conventional fashion but at a position so that the endless tracks project at the forward end of themain frame 10 therebeyond but are recessed from the rearward end of the frame for a purpose which will become apparent hereinafter. As can be seen, particularly by reference to Figure 2, the endless tracks are confined within the lateral contours of the frame so that its overall width is less than five feet and the endless tracks have a height such that, when added to the height of the side plates, provides an overall vertical dimension of less than six feet. Thus the entire elongated frame and the mobile carriers therefor can pass readily through a tunnel having lateral dimensions no more than six feet in height and five feet in width. - To power the endless tracks and certain additional equipment to be described hereinafter, an
electric motor 22 of appropriate power is mounted at the rearward end ofmain frame 10 on one of the mentioned transverse braces, the precise drive arrangement to the endless tracks being conventional and thus not described in further detail. - Adjacent the forward extremity of the elongated
main frame 10 the mentioned upper and lowertransverse braces 16, are joined rigidly to theside walls gimbal pins parallel side plates - The
side plates excavating boom 36 are held in laterally spaced relation by simplerigid metal braces 38 and the outer surfaces thereofmount balls ball sockets 44, 46 at the forward ends of double-actinghydraulic rams 48, 50 whose opposite extremities are universally joined to aforward extension 10a of themain frame 10 by similar ball andsocket joints hydraulic rams 48, 50 by ahydraulic pump 56 that is driven by the previously describedelectric motor 22. One valve (not shown) is associated in a conventional fashion with each hydraulic ram and is arranged to supply hydraulic pressure to one or the other end of its associated ram so that, as will be apparent, if both valves are open in one direction, both hydraulic rams will extend or retract to raise or lower the excavating boom, whereas on the other hand, if one valve is open in one direction while the other is open in the opposite direction, a lateral motion of the boom will occur; for example, to the phantom-line disposition shown in Figure 2. - Between opposite ends of the described
boom side plates sprockets tubes side plates boom 36. Each pair of sprockets engages the enlarged opposite ends of ahinge pin 68 which is arranged in bridging relationship between the laterally-spaced sprockets to rotatably extend through a piano-hing connection in the form of interdigitatedhinges adjacent excavating buckets 74, which provide the material excavating elements of the unit. When it is remembered that considerable forces are encountered during the excavating operation, the enlarged ends of thepin 68 will rotate to provide only rolling friction with the engaged sprocket, thus to reduce sliding friction and extend the useful life of the elements to a considerable extent. Furthermore, it will be seen that eachhinge pin 68 common to the foremost extremity of one bucket and the rearmost extremity of the adjacent bucket will rotate in thehinges - In consideration of the extreme wear experiences by the digging ends of the excavating buckets, replaceable
hard teeth 76 are utilized, and, as best shown in Figure 5, each tooth includes a tongue andgroove connection 78 between it and its supporting element, which in turn facilitates replacement thereof after continued wear over an extended period. - The line of buckets mounted on the sprockets is arranged for counterclockwise motion, as shown in Figure 1, when driven by a pair of
hydraulic motors gear reduction units hydraulic pump 56 driven by the previously describedelectric motor 22. - Utilization of the described hydraulic actuating mechanism enables a ready variation in the requisite power dependent upon the resistance of the material being engaged by the line of excavating buckets. When the buckets engage the material, as can be readily visualized by reference to Figure 1, they will be moving in sequence in an upward direction, tending to rotate or pivot the entire machine about a transverse pivot formed at the forward end of the endless tracks. Since this pivot point is forwardly of most of the weight of the heavy frame and the elements mounted thereon, considerable forces may be generated without moving the frame about this transverse axis, thus to assure the requisite application of force during the excavating operation. Furthermore, if the
excavating boom 36 is operating at a lateral angle such as indicated in phantom lines in Figure 2, the reactive force components tending to rotate themain frame 10 about its longitudinal axis will be counterbalanced by the weight of the opposite side wall. - Material excavated and carried by the excavating buckets will be dumped therefrom as they pass in succession over the
rear sprocket 58 onto a suitableendless conveyor 88 which lies thereunder and is mounted for conveyance of material deposited thereon beyond the rear end of the frame at an upper elevation so that the material conveyed on the belt can be dumped into a suitable truck or other receptacle (not shown) for removal and subsequent processing. Theconveyor 88 is supported between the frame plates and is powered by suitable connection to themotor 22. - Obviously, many variations and/or alterations in this structure as specifically described can be made without departing from the spirit of the invention, and the foregoing description of one embodiment is to be considered as purely exemplary and not in a limiting sense, and the actual scope of the invention is to be indicated only by reference to the appended claims.
Claims (15)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT83201298T ATE21137T1 (en) | 1979-11-09 | 1980-11-07 | CONTINUOUS DRAGGER. |
DE8383201298T DE3071688D1 (en) | 1979-11-09 | 1980-11-07 | Continuous excavating apparatus |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US9302079A | 1979-11-09 | 1979-11-09 | |
US93020 | 1979-11-09 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP83201298.3 Division-Into | 1980-11-07 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0028930A1 true EP0028930A1 (en) | 1981-05-20 |
EP0028930B1 EP0028930B1 (en) | 1984-06-27 |
Family
ID=22236388
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP80303996A Expired EP0028930B1 (en) | 1979-11-09 | 1980-11-07 | Continuous excavating apparatus |
EP83201298A Expired EP0108430B1 (en) | 1979-11-09 | 1980-11-07 | Continuous excavating apparatus |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP83201298A Expired EP0108430B1 (en) | 1979-11-09 | 1980-11-07 | Continuous excavating apparatus |
Country Status (7)
Country | Link |
---|---|
EP (2) | EP0028930B1 (en) |
AT (1) | ATE8167T1 (en) |
AU (2) | AU546996B2 (en) |
CA (1) | CA1157489A (en) |
DE (2) | DE8029824U1 (en) |
FR (2) | FR2478159A3 (en) |
IT (2) | IT8023303V0 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2873246A1 (en) * | 2012-05-12 | 2013-11-21 | Suhua LIU | Method of equipment for converting rotary motion into reciprocating impact motion and equipment for converting rotary motion into reciprocating impact motion for implementing the method |
CN111396042A (en) * | 2020-05-19 | 2020-07-10 | 韩国辉 | A rig equipment that is used for colliery production to have synchronous extraction function |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE359131C (en) * | 1915-05-19 | 1922-09-19 | Jules Legrand | Mobile digger with conveyor device for the production of graves and tunnels |
DE578555C (en) * | 1933-06-15 | Ida Hamel Geb Ortlieb | Underground sheared conveyor | |
US2320196A (en) * | 1941-06-16 | 1943-05-25 | Eugene F Smith | Tunneling machine |
US3035821A (en) * | 1958-09-12 | 1962-05-22 | Amo Placer Mines Inc | Bucket type mechanical mole |
DE2155590A1 (en) * | 1971-04-02 | 1973-01-11 | Paurat F | MACHINE FOR DRIVING TUNNELS OR THE SAME |
DE2328207C3 (en) * | 1972-06-06 | 1978-05-11 | Dobson Park Industries Ltd., Nottingham, Nottinghamshire (Grossbritannien) | Road driving machine for underground mining |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE498215A (en) * | 1949-10-27 | |||
CH314241A (en) * | 1953-08-10 | 1956-06-15 | Scheuchzer Fils Auguste | Chain with meshing function |
DE1753989U (en) * | 1957-02-08 | 1957-10-10 | Eickhoff Geb | LINK BAND. |
US3233722A (en) * | 1962-08-22 | 1966-02-08 | Charles T Jorgensen | Piano type conveyor belt |
GB995391A (en) * | 1963-05-10 | 1965-06-16 | Himpelm Engineers Ltd | Link conveyor belts |
US4171045A (en) * | 1978-01-20 | 1979-10-16 | The Laitram Corporation | Raised link modular conveyor belt |
US4380354A (en) * | 1981-03-12 | 1983-04-19 | National Mine Service Company | Mining machine loading bin mounted on boom structure and method |
-
1980
- 1980-11-06 AU AU64129/80A patent/AU546996B2/en not_active Ceased
- 1980-11-06 CA CA000364172A patent/CA1157489A/en not_active Expired
- 1980-11-07 EP EP80303996A patent/EP0028930B1/en not_active Expired
- 1980-11-07 DE DE19808029824U patent/DE8029824U1/en not_active Expired
- 1980-11-07 FR FR8023933A patent/FR2478159A3/en active Granted
- 1980-11-07 AT AT80303996T patent/ATE8167T1/en not_active IP Right Cessation
- 1980-11-07 DE DE8080303996T patent/DE3068371D1/en not_active Expired
- 1980-11-07 IT IT8023303U patent/IT8023303V0/en unknown
- 1980-11-07 IT IT8023302U patent/IT8023302V0/en unknown
- 1980-11-07 EP EP83201298A patent/EP0108430B1/en not_active Expired
-
1981
- 1981-10-23 FR FR8119989A patent/FR2493369A3/en active Granted
-
1985
- 1985-04-19 AU AU41457/85A patent/AU570792B2/en not_active Ceased
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE578555C (en) * | 1933-06-15 | Ida Hamel Geb Ortlieb | Underground sheared conveyor | |
DE359131C (en) * | 1915-05-19 | 1922-09-19 | Jules Legrand | Mobile digger with conveyor device for the production of graves and tunnels |
US2320196A (en) * | 1941-06-16 | 1943-05-25 | Eugene F Smith | Tunneling machine |
US3035821A (en) * | 1958-09-12 | 1962-05-22 | Amo Placer Mines Inc | Bucket type mechanical mole |
DE2155590A1 (en) * | 1971-04-02 | 1973-01-11 | Paurat F | MACHINE FOR DRIVING TUNNELS OR THE SAME |
DE2328207C3 (en) * | 1972-06-06 | 1978-05-11 | Dobson Park Industries Ltd., Nottingham, Nottinghamshire (Grossbritannien) | Road driving machine for underground mining |
Non-Patent Citations (1)
Title |
---|
SALTZGITTER LADER, Prospect 155, Limbach 60303/1000. 2. 50. "5. Standsicherheit" * |
Also Published As
Publication number | Publication date |
---|---|
FR2493369A3 (en) | 1982-05-07 |
FR2493369B3 (en) | 1982-11-26 |
FR2478159A3 (en) | 1981-09-18 |
AU4145785A (en) | 1985-08-22 |
IT8023302V0 (en) | 1980-11-07 |
CA1157489A (en) | 1983-11-22 |
AU6412980A (en) | 1981-05-14 |
AU570792B2 (en) | 1988-03-24 |
EP0108430A1 (en) | 1984-05-16 |
FR2478159B3 (en) | 1982-07-02 |
AU546996B2 (en) | 1985-10-03 |
EP0028930B1 (en) | 1984-06-27 |
IT8023303V0 (en) | 1980-11-07 |
DE8029824U1 (en) | 1981-04-09 |
ATE8167T1 (en) | 1984-07-15 |
EP0108430B1 (en) | 1986-07-30 |
DE3068371D1 (en) | 1984-08-02 |
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