US3770099A - Scraper-extractor - Google Patents

Scraper-extractor Download PDF

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Publication number
US3770099A
US3770099A US00203259A US3770099DA US3770099A US 3770099 A US3770099 A US 3770099A US 00203259 A US00203259 A US 00203259A US 3770099D A US3770099D A US 3770099DA US 3770099 A US3770099 A US 3770099A
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United States
Prior art keywords
scraper
gantry
arm
jib
arms
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Expired - Lifetime
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US00203259A
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English (en)
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B Bernicot
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Individual
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Individual
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    • 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
    • B65G65/00—Loading or unloading
    • B65G65/02—Loading or unloading machines comprising essentially a conveyor for moving the loads associated with a device for picking-up the loads
    • B65G65/06—Loading or unloading machines comprising essentially a conveyor for moving the loads associated with a device for picking-up the loads with endless scraping or elevating pick-up conveyors

Definitions

  • This gantry-type scraper-extractor comprises a gantry June 20 1969 France 6920772 from which two arms equipped with endless Chains rying scraper tools are suspended in separate planes by 52 us.
  • Cl 198/36 37/192 R 214/10 having their lower ends Pivmed and guided by 51 Int. Cl. B65 g 59/00 base of Said gantry "PPer ends Said Scraper arms
  • Field of Search 198/9 36 87 92 being inmconnected by a ink-forming member 198/174. 214/10.
  • This invention relates to a scraper-extractor of the movable translational type, which comprises essentially two movable arms carried by a gantry and provided with scraping means.
  • a scraper-extractor movable on rails which comprises a pair of scraper arms disposed in succession and pivoted to each other so as to form a variable angle therebetween for scraping simultaneously the two sides of a heap, pile or like material or products to be picked up.
  • the scraper arms are driven separately and suspended from the gantry overlying the material.
  • a scraper extractor of this type proved unsatisfactory in that the material to be scraped off tended to accumulate and clog the apex portion of the angle formed by the two arms, thus impairing the operation of the assembly.
  • Another known scraper comprises two arms pivoted to the gantry at their bases, without having any common point. Obviously, this arrangement is attended by considerable difficulties as far as synchronization is concerned. On the other hand, two separate devices must be provided for controlling the luffing or upward movements of the two arms, thus increasing the final cost of the assembly.
  • FIG. 1 is a diagrammatic elevational view of a gantry scraper according to this invention
  • the scraper-extractor of the movable translational type comprising a gantry from which are suspended a first scraper arm and a second scraper arm, said arms having their lower ends pivoted to and guided by said gantry, is characterized in that the upper ends of said arms are interconnected by a member pivoted to said upper ends, and that an adjustable control device is provided for determining the proper angular position of said connecting member in relation to the upper end of said first arm so that the upper end of said second arm constantly lies at a higher level than the upper end of said first arm.
  • FIG. 2 is an elevational view showing on a larger scale the member interconnecting the upper ends of the two scraper arms, with its control system, and
  • FIG. 3 is a plane view showing on a still larger scale the upper ends of the two scraper arms, the connecting member and its control system.
  • cording to the invention comprises essentially a gantry 1 having the shape of an inverted V and at its lower ends, means permitting its translation along horizontal track rails (not shown).
  • a pair of scraper arms Suspended from this gantry 1 are a pair of scraper arms, namely a primary scraper arm 2 and a secondary scraper arm 3.
  • Each scraper arm 2, 3 carries an endless scraper chain driven from power means (not shown) and provided with scraping tools disposed at spaced intervals.
  • the primary scraper arm 2 is pivoted at its lower end to the lower portion of gantry 1, about pivot means 4.
  • the secondary scraper arm 3 carries at its lower end a pivot shaft 5 or any other similar member adapted to slide in a guide rail 6 carried by the gantry.
  • This secondary arm 3 is on the other hand suspended at its upper end from a hoisting rope 7 passing over a pulley and connected to a luffing or hoisting winch (not shown).
  • the pair of scraper arms 2 and 3 are interconnected at their upper ends by a connecting member 9 pivoted on the one hand'to the upper end'of primary arm 2 about a pivot pin 10 and on the other hand to the upper end of the secondary arm 3 about another pivot pin 11.
  • This connecting member 9 is held in an adjustable angular position in relation to the primary arm 2, through a control device 12 operatively connected to the connecting member 9 by means of a transmission device 13 such as a linkage or lever system.
  • the connecting member 9 illustrated diagrammatically in the drawingin the form of a link is positioned and held in a position such that the upper end of the secondary arm 3, during actual operation, is constantly kept above upper end of arm 2, as illustrated in FIG. 1. With this arrangement, it is possible to definitely eliminate any risk of clogging the angle formed between the two scraper arms.
  • the control device 12 is intended for adjusting at will the inclination of the connecting member 9 in relation to the primary arm 2, and therefore the position of the connecting member 9 as the two arms 2 and 3 are lowered.
  • This variation in the angular position of the connecting member 9 is particularly desirable when the two arms 2, 3 eventually engage the ground 14, for in this case a superposition would prevent a complete picking up the products in series.
  • the connecting member 9 substantially in alignment with the primary arm 2, the two scraper arms 2 and'3 can be aligned in end to end relationship, as shown diagrammatically in dash lines in FIG. 1.
  • This Figure also shows in dash lines an intermediate position of arms 2 and 3, during the downward movement thereof.
  • FIGS. 2 and 3 for describing a specific and exemplary form of embodiment of the above-mentioned control device 12 and also of the connecting and superposition member 9 contemplated between the upper ends of-the scraper arms 2 and 3 of the apparatus.
  • the connecting member 9 comprises two parallel arms 18, 19 of section material, welded to each other and pivoted about pivot pins 10, 11 carried by the upper ends of arms 2 and 3, respectively, equipped in turn with the scraper chains 20, 21.
  • the two arms 18, 19 are interconnected by a cross member 22.
  • the control device proper 12 comprises a pair of mechanical screw jacks 23, 24, mounted on a frame structure 25 rigid with the head of the primary scraper arm 2.
  • This frame structure comprises a cross member 26 to which an electric motor 27 is mounted, the output shaft of this motor carrying a pulley 28 connected via V-belts 29 to another pulley 30 rigid with a transverse shaft 31.
  • This shaft 31 rotatably mounted in bearings 32 carried by said cross member 26 is operatively connected to the input shafts of jacks 23 and 24.
  • the output rods 33, 34 of these jacks have their outer ends pivoted to shafts 37, 38, carried by straps 35, 36 rigid with said cross member 22.
  • the shafts 37, 38 also act as pivot means to links 39, 40, and extend through external straps 41, 42, rigid with theaforesaid two arms 18 and 19, respectively, and receiving the ends of said links 39 and 40, respectively.
  • links are formed with elongated holes 43, 44 into which pivot pins 45, 46 carried by cross member-26 project.
  • a scraper extractor of the translational type movable above a heap or pile of bulk material to be loaded comprising a movable gantry, a first scraper arm having a lower end pivotally mounted on said gantry and extending on one side of said gantry, a second scraper arm mounted on said gantry on an opposite side of said gantry and having a lower end guided on said gantry, means for guiding said second arm lower end for upward and downward movement thereof, means for lifting and controlling downward movement of saidsecondary arm, first and second pivot pins on the upper ends of said first and second scraper arms respectively, a member interconnecting the upper ends of said first and second scraper arms and having ends pivotally connected to said first and second pivot pins respectively, and adjustment means for variably adjusting and maintaining the angular position of said connecting member about said first pivot pin so that the upper end of said second scraper arm is disposed above the upper end of said first arm during the major downward movement of said upper end of said first and second arms, said adjustment means comprising a
  • a gantry scraper for loading bulk material from a storage heap; a gantry; a scraperloader for loading bulk material from a storage heap of said material comprising a first scraper jib having first scraper means thereon for scraping said material from said storage heap to a loading position, and a second scraper jib having second scraper means thereon for scraping said material on said storage heap and feeding said first scraper means with said material, means pivotally connecting a lower end of said first scraper jib to said gantry at an elevation above the elevation of the bottom of said storage heap; a link member pivotally connecting said second scraper jib to said first scraper jib; means pivotally connecting said link member at one point to said second scraper jib; means pivotally connecting said link member at another point to said first scraper jib; guiding means for guiding movement of said second scraper jib during operation of said gantry scraper; and adjusting means connected to said link member and operative for

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Auxiliary Methods And Devices For Loading And Unloading (AREA)
  • Jib Cranes (AREA)
US00203259A 1969-06-20 1971-11-30 Scraper-extractor Expired - Lifetime US3770099A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6920772A FR2061555B1 (fr) 1969-06-20 1969-06-20

Publications (1)

Publication Number Publication Date
US3770099A true US3770099A (en) 1973-11-06

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US (1) US3770099A (fr)
DE (1) DE1938397A1 (fr)
FR (1) FR2061555B1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5199549A (en) * 1991-07-23 1993-04-06 Krupp Polysius Ag Scraper conveyor for loose bulk material
DE102014222418A1 (de) * 2014-11-03 2016-05-04 Takraf Gmbh Knickgelenk für einen Vollportalkratzer

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112850194B (zh) * 2021-04-07 2021-09-24 南通奥普机械工程有限公司 一种带双刮板双卷扬机构全门式刮板取料机设备

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE747683C (de) * 1938-01-04 1944-10-09 Schraemkettenbagger
US3509985A (en) * 1967-03-25 1970-05-05 Schade Maschf Gustav Conveyor loading and unloading apparatus
US3604572A (en) * 1968-02-12 1971-09-14 Schade Maschf Gustav Combined equipments for building up and clearing dumps of bulk materials
US3621977A (en) * 1968-10-19 1971-11-23 Schade Maschf Gustav Material-removing scraper with an articulated boom

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE747683C (de) * 1938-01-04 1944-10-09 Schraemkettenbagger
US3509985A (en) * 1967-03-25 1970-05-05 Schade Maschf Gustav Conveyor loading and unloading apparatus
US3604572A (en) * 1968-02-12 1971-09-14 Schade Maschf Gustav Combined equipments for building up and clearing dumps of bulk materials
US3621977A (en) * 1968-10-19 1971-11-23 Schade Maschf Gustav Material-removing scraper with an articulated boom

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5199549A (en) * 1991-07-23 1993-04-06 Krupp Polysius Ag Scraper conveyor for loose bulk material
DE102014222418A1 (de) * 2014-11-03 2016-05-04 Takraf Gmbh Knickgelenk für einen Vollportalkratzer
DE102014222418B4 (de) * 2014-11-03 2021-04-29 Takraf Gmbh Knickgelenk für einen Vollportalkratzer

Also Published As

Publication number Publication date
DE1938397A1 (de) 1971-01-07
FR2061555B1 (fr) 1973-10-19
FR2061555A1 (fr) 1971-06-25

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