EP0028930B1 - Continuous excavating apparatus - Google Patents

Continuous excavating apparatus Download PDF

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Publication number
EP0028930B1
EP0028930B1 EP80303996A EP80303996A EP0028930B1 EP 0028930 B1 EP0028930 B1 EP 0028930B1 EP 80303996 A EP80303996 A EP 80303996A EP 80303996 A EP80303996 A EP 80303996A EP 0028930 B1 EP0028930 B1 EP 0028930B1
Authority
EP
European Patent Office
Prior art keywords
frame
boom
excavating
bucket
tracks
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
Application number
EP80303996A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0028930A1 (en
Inventor
Jonas L. Roe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Terradyne Ltd
Original Assignee
Terradyne Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Terradyne Ltd filed Critical Terradyne Ltd
Priority to AT83201298T priority Critical patent/ATE21137T1/de
Priority to DE8383201298T priority patent/DE3071688D1/de
Publication of EP0028930A1 publication Critical patent/EP0028930A1/en
Application granted granted Critical
Publication of EP0028930B1 publication Critical patent/EP0028930B1/en
Expired legal-status Critical Current

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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.
  • U.S.-A-2,320,196 shows a continuous excavating and conveying apparatus comprising a frame including frame members rigidly joined to form an elongated box-like structure, a pair of driven endless tracks on which said frame is mounted, a boom carrying an endless excavating bucket line and mounted on a gimbal to swing about a horizontal axis, the gimbal being supported between upper and lower frame members to swing the boom about a vertical axis and means for swinging the boom about said vertical and horizontal axes.
  • the present invention is characterized by having heavy plates spaced apart and forming opposite sides of the frame to act as counterweights against digging forces which tend to rotate the frame about its longitudinal axis, the tracks being located substantially within the lateral extent of the frame defined by said side plates.
  • the preferred form of removing the material from the endless bucket chain is a conveyor means which extends upwardly and rearwardly from a point adjacent the front end of the machine to a point adjacent the rear of the frame and being located between the side- counterweights for receiving material from the bucket line.
  • a major problem encountered in operating in very small spaces is one of maintenance because of the inaccessability of the operating parts for repair. Items such as bucket teeth need frequent replacement and, in buckets of current design, uneven wear on the pins connecting the buckets together frequently results in failures. In view of the difficulty of access in very small spaces, necessary repairs frequently result in unacceptable downtime for the machines.
  • Known machines have an endless sprocket- driven excavating bucket line which comprises a plurality of excavating buckets and a plurality of hinge pins.
  • a particular embodiment of the present invention is characterized in that the hinge pins each commonly pivotally connect adjacent buckets by rotatably engaging in respective adjacent hinges on the buckets; and in that the hinge pins have enlarged opposite ends for engagement with bucket line drive sprockets to cause a center portion of each pin to rotate during operation. The rotation of the center portion of the pin, in contact with the hinges, evenly distributes pin wear and leads to longer pin life.
  • 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 contiguous 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 1 Oa 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-hinge 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)
EP80303996A 1979-11-09 1980-11-07 Continuous excavating apparatus Expired EP0028930B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AT83201298T ATE21137T1 (de) 1979-11-09 1980-11-07 Kontinuierlich baggerndes geraet.
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 1983-09-09

Publications (2)

Publication Number Publication Date
EP0028930A1 EP0028930A1 (en) 1981-05-20
EP0028930B1 true 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 (enrdf_load_stackoverflow)
AT (1) ATE8167T1 (enrdf_load_stackoverflow)
AU (2) AU546996B2 (enrdf_load_stackoverflow)
CA (1) CA1157489A (enrdf_load_stackoverflow)
DE (2) DE8029824U1 (enrdf_load_stackoverflow)
FR (2) FR2478159A3 (enrdf_load_stackoverflow)
IT (2) IT8023302V0 (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111396042A (zh) * 2020-05-19 2020-07-10 韩国辉 一种用于煤矿生产的具有同步抽取功能的钻机设备

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150322784A1 (en) * 2012-05-12 2015-11-12 Suhua Liu Method of device for converting rotary motion to reciprocating percussion motion and device for converting rotary motion to reciprocating percussion motion that implements the method

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE578555C (de) * 1933-06-15 Ida Hamel Geb Ortlieb Untertage-Schraemfoerdermaschine
FR510963A (fr) * 1915-05-19 1920-12-14 Jules Legrand Appareil servant à creuser mécaniquement les galeries souterraines et les tranchées
US2320196A (en) * 1941-06-16 1943-05-25 Eugene F Smith Tunneling machine
BE498215A (enrdf_load_stackoverflow) * 1949-10-27
CH314241A (fr) * 1953-08-10 1956-06-15 Scheuchzer Fils Auguste Chaîne à fonction d'engrènement
DE1753989U (de) * 1957-02-08 1957-10-10 Eickhoff Geb Gliederband.
US3035821A (en) * 1958-09-12 1962-05-22 Amo Placer Mines Inc Bucket type mechanical mole
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
DE2155590C3 (de) * 1971-04-02 1974-11-07 Friedrich Wilhelm 4222 Friedrichsfeld Paurat Maschine zum Vortreiben von Strecken, Tunnels oder dergleichen
GB1393809A (en) * 1972-06-06 1975-05-14 Dobson Park Ind Vehicle mounted mineral or eart moving or working equipment
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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111396042A (zh) * 2020-05-19 2020-07-10 韩国辉 一种用于煤矿生产的具有同步抽取功能的钻机设备

Also Published As

Publication number Publication date
AU570792B2 (en) 1988-03-24
ATE8167T1 (de) 1984-07-15
FR2478159A3 (fr) 1981-09-18
EP0028930A1 (en) 1981-05-20
EP0108430B1 (en) 1986-07-30
FR2493369B3 (enrdf_load_stackoverflow) 1982-11-26
IT8023302V0 (it) 1980-11-07
DE8029824U1 (de) 1981-04-09
CA1157489A (en) 1983-11-22
AU4145785A (en) 1985-08-22
DE3068371D1 (en) 1984-08-02
FR2478159B3 (enrdf_load_stackoverflow) 1982-07-02
FR2493369A3 (fr) 1982-05-07
IT8023303V0 (it) 1980-11-07
AU546996B2 (en) 1985-10-03
AU6412980A (en) 1981-05-14
EP0108430A1 (en) 1984-05-16

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