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WO2004089803A1 - Benne d'exploitation miniere - Google Patents

Benne d'exploitation miniere Download PDF

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Publication number
WO2004089803A1
WO2004089803A1 PCT/ZA2004/000036 ZA2004000036W WO2004089803A1 WO 2004089803 A1 WO2004089803 A1 WO 2004089803A1 ZA 2004000036 W ZA2004000036 W ZA 2004000036W WO 2004089803 A1 WO2004089803 A1 WO 2004089803A1
Authority
WO
WIPO (PCT)
Prior art keywords
carrier
corner
carrier body
along
sections
Prior art date
Application number
PCT/ZA2004/000036
Other languages
English (en)
Inventor
Berend Jan Werkman
Original Assignee
Berend Jan Werkman
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 Berend Jan Werkman filed Critical Berend Jan Werkman
Publication of WO2004089803A1 publication Critical patent/WO2004089803A1/fr
Priority to ZA200409303A priority Critical patent/ZA200409303B/xx

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B17/00—Hoistway equipment
    • B66B17/08—Mining skips

Definitions

  • This invention relates to a load transporting carrier employable for transferring a load that has the effect of exerting an outward force on the side walls of the carrier body during its operative use and to a method of at least strengthening a load transporting carrier conventionally being formed with planar side walls that are so exposed to outwardly urging load forces during operative use.
  • the invention finds useful application in the field of mining skips.
  • the walls of such skips are manufactured to be of substantial thickness to ensure a body of adequate strength to enable the safe transport of material.
  • the material used for such manufacturing is normally of high density to achieve the desired strength.
  • Figure 1 shows a load transporting cage, according to the invention, in the form of a mining skip in partly cut away side elevation
  • Figure 2 shows the skip in end elevation
  • Figure 3 shows the core part of the skip in more detailed open sided view
  • Figure 4 shows the skip along section line A-A in figure 1 though omitting the detail of the bottom end of the skip
  • Figure 5 shows a detail of the part of the wall of the skip as appropriately strengthened, in plan view
  • Figure 6 shows the detail of figure 5 along section line B-B
  • Figure 7 shows the detail of figure 5 along section line C-C
  • Figure 8 shows the detail of figure 5 along section line D-D
  • Figure 9 shows in detailed overhead view the layout of the charge aperture of the skip
  • Figure 10 diagrammatically shows the opening and closing mechanism of and steps for opening and closing the discharge door of the skip.
  • a load transporting carrier in the form of a mining skip is generally indicated by reference numeral 10.
  • the skip 10 comprises a carrier body in the form of skip body 12 of generally rectangular end profile encompassing a loading zone 14 with the skip body 12 being formed with planar side walls 16 extending between curved skip body corners 18 and being strengthened against outward urging once exposed to a load by a carrier body sidewall outward displacement limiting and strengthening rib formation layout in the form of a plurality of integrally secured rib formations 20 integrally secured by being welded to the inside surface of the skip body 12 to circumferentially extend in planes that extend transverse to the axis of displacement 22 of the skip 10.
  • the skip 10 is fitted with an overhead charging opening 24 while its discharge opening 26 is reopenably closable by a hingedly mounted door 28 of which the opening and closure mechanism is discussed in more detail below.
  • the skip 10 is naturally also fitted with conventional connection means inclusive of a connecting assembly 29 that is connected via a cross member 30 to a bridle 32 surrounded by the skip body 12.
  • the skip 10 is thus operatively installable via conventional winder ropes (not shown) found along a shaft and used for its displacement.
  • the skip body 12 is constituted from panels 34 integrally secured by way of seam welds 36 to curvedly formed skip body corner formations 38.
  • the welds 36 consequently extend in the direction of the axis 22.
  • the corner formations 38 and the panels 34 are dimensioned to result in the welds 36 extending in the regions of contra flexure of the wall of the body 12. These are thus the positions where the flexing of the side walls 16 become inverted causing regions of reduced bending stress along the body 12. These regions are typically found at locations in the order of a distance of 20% of the full width of a side wall 16 from the corners of the skip body 12 at least when of rectangular end profile.
  • the rib formations 20 thus extend circumferentially along the inside of the side walls 16 and through the corners sections 18 of the body 12.
  • the formations 20 are integrally secured to the skip body 12 by being welded thereto by way of circumferentially extending linear seam welds, as discussed in more detail below.
  • Such technique of securing does not effectively contribute to the formation of zones of reduced skip wall endurance, as normally brought about by applying a welding effect to the material of the skip body 12, owing to the direction of such welds lying along and thus flexing in conjunction with the flexing plane of a side wall 16 on its outward flexing once put under stress on the skip 10 being charged.
  • a weld that lies otherwise and especially down the flexing plane, as conventionally found in the fitting of strengthening means to a skip body, is more susceptible to contributing to skip body metal fatigue. This results in the quicker deterioration as caused by cracking or even tearing along zones of reduced wall endurance and consequent shorter skip life.
  • Each rib formation 20 is constituted from four arcuately formed corner sections 40 and four linear sections 42 that link the corner sections 40 owing to their being integrally end on secured by way of welding to opposite corner sections 40.
  • the linear and corner sections 40, 42 respectively are channel shaped with the corner sections naturally extending arcuately.
  • the corner sections 40 as curved to snugly fit into the curved corner formations 38 of the skip body 12, extend by way of linear portion 44 some distance along the side walls of the body 12.
  • the lengths of the portions 44 are suitably selected to result in their locations of welded inter-securing to the linear sections 42 lying adjacent the positions of contra flexure of the side walls of the body 12.
  • the linear sections 42 each consists of longitudinal side flanges 42.1 connected by a web 42.2.
  • the sections 42 are thus secured along welds 46 that extend transverse to the axis 22 of the skip 10 to the wall of the skip body 12 for the reason as already discussed.
  • the end profiles of the corner sections 40 match that of the linear sections 42 though each naturally extending through a curve.
  • the corner sections 40 are also formed with intermediate strengthening ribs 40.2 that extend between the web 40.3 of each section 40 and the inner face of the sidewall 16.
  • the flanges 40.1 and the rib 40.2 are secured to the skip sidewall 16 along welds 48 also extending transverse to the axis 22.
  • their inner radii 50 are of generally the same magnitude as the outer radii 52.
  • each corner section 40 is so similar has the effect that the depth 54 of each corner section 40 progressively increases from the opposite locations of commencement of curvature formation 56 towards its centre position 58.
  • the outer radius 52 of each corner section 40 is in the order of ten times the thickness of the wall of the skip body 12.
  • the various parts of the rib formations 20 are formed with oblique overhead sections in the form of deflecting strips 60 that slant inward and downward to counteract blocking of material within the loading zone 14 once the skip 10 is in use.
  • the strips 60 are naturally also welded to the skip body 12 in the same way as the corner and linear sections 40 and 42 respectively.
  • the strips 60 are clad with liners 62 that are usefully replaceable fitted to the strip 60 by being bolted via the sidewall 16 of the skip 10 to the strips 60.
  • the lower end lips 62.1 of the liners 62 can conveniently overhang the strips 60 further protecting the webs 40.3 and 42.2.
  • these linear sections can be fitted with resilient impact absorbing buffers 64 that overhang the liners 62.
  • the buffers 64 are typically in the form of resilient layer material 64.1 sandwiched between inner and outer protecting liners 64.2.
  • the buffers 64 are conveniently bolted to the skip body 16 enabling their replacement.
  • the skip 10 is formed with a discharge zone 66 of reduced cross sectional area. This is achieved by causing an extension of the webs 40.3, 42.2 of the second lowest rib formation 20.1 to form the wall of the bottom section 16.1 of the skip body 16.
  • Such narrowing of only the bottom has the advantage that the discharge door 28 which has to be larger than the discharge opening 26 promoting a spillage free discharge of the skip 10 when is use. This promotes utilising the skip 10 to its maximum capacity along its constricted zone of displacement such as a mining shaft.
  • the charging opening 24 is dimensioned to be narrower than the side walls while its lower section is formed with funnel defining flanges 68. This directs the charging effect towards the centre of the loading zone 14 that in turn reduces stiffener wear.
  • the opening and closing mechanism of the discharge door 28 of the skip is generally indicated by reference numeral 70.
  • the mechanism 70 involves guide assembly engaging means in the form of displacement rollers 72 for the lateral displacement of the skip 10 as such and a cam and follower arrangement 74 for the opening and closure of the door 28.
  • Use of the mechanism 70 involves the pendulous displacement of the skip 10 in the direction of arrow 76. It is consequently suspended from the cross member 30 forming part of the bridle 32.
  • the skip 10 is thus formed with a longitudinal hollow (not shown in detail) along which the bridle 32 extends when normally hanging from the cross member 30. Displacement of the skip 10 in the outward direction of arrow 76 is achieved in response to the rollers 72 coming in guiding engagement with a guide formation 78 forming a fixture at the skip discharge zone. This is normally at the upper end of a shaft along which the skip is displaceable. The formation 78 is thus engaged from below by the rollers 72 on the skip reaching the discharge zone along the shaft. The formation 78 is formed with a gradual outward curve 78.1 in the direction of causing skip pendulous displacement (the outward direction of arrow 76) thus causing such displacement once the skip rollers 72 pass into the curved section of the guide formation 78.
  • the operation of the cam and follower arrangement 74 in opening and closing the door 28 ties in with the pendulous swivelling of the skip 10.
  • the door 28 is swivellably mounted along its one side via a hinge 80.
  • the cam and follower arrangement 74 comprises a cam pair 82 fitted to the bottom end of the bridle 32 that runs upward and inward from outer lips 82.1 while the upper end of each cam path ends in a cam saddle 84 accessible along a cam knob 86 that limits undesired escape of a follower from the cam saddle 84 except when positively so urged.
  • the arrangement 74 thus also comprises a cam follower for each cam 82 in the form of a cam roller 88 fitted at a suitable position below the door 28 to cause its opening and closing swivelling in response to roller to cam engagement.
  • Firm closure of the door 28 is maintained (as shown in figure 10(a)) once the rollers 88 have moved into their cam saddles 84 while undesired opening of the door 28 is counteracted owing to the cam knobs 86 limiting escape of the rollers 88.
  • the rollers 72 commence engagement with the guide formation 78 on upward displacement of the skip 10, it is gradually urged to pendulously swivel in the outward direction of arrow 76.
  • Manufacturing of the skip naturally commences with manufacturing of the skip body 12.
  • the rib formations 20 are subsequently fitted to the body 12. This can be done by either fully pre- manufacturing the rib formations 20 and then welding them to the inner wall of the skip body 12. Otherwise the rib formations 20 can be formed in the process of securing the various parts making up the formations 20 inside the skip body 12. In whichever way formed the liners 62, when so arranged, and the buffers 64 are naturally fitted to the skip body 12 once the rib formations 20 are operatively installed.
  • the location of the rib formations along the inner wall of the skip body has the effect of more effectively using the cross sectional area of a shaft. It will, however, be appreciated that the invention also extends to a skip of which the strengthening formations are situated along the outside wall if the skip body.

Landscapes

  • Connection Of Plates (AREA)

Abstract

La présente invention concerne un chariot de transport de charge se présentant sous la forme d'une benne d'exploitation minière (10), qui comprend un corps de chariot sous la forme d'un corps de benne (12) comportant des parois latérales planes (16) s'étendant entre des coins arrondis (18). Le corps de benne (12) est renforcé contre la déformation vers l'extérieur sous l'exposition à une charge par une pluralité de formations en arête soudées sur la circonférence (20), qui sont fixées le long de la paroi interne du corps précité (12). Les soudures entre les panneaux (34) et les formations en coin (38) du corps de benne (12) et entre les sections de coin (40) et les sections linéaires (42) des formations en arête (20) sont situées dans les régions d'inflexion du corps de benne (12) afin de limiter l'effet des contraintes exercées sur le corps pendant l'utilisation de la benne (10).
PCT/ZA2004/000036 2003-04-11 2004-03-29 Benne d'exploitation miniere WO2004089803A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ZA200409303A ZA200409303B (en) 2004-03-29 2004-11-19 Mining skip.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA200302836 2003-04-11
ZA2003/2836 2003-04-11

Publications (1)

Publication Number Publication Date
WO2004089803A1 true WO2004089803A1 (fr) 2004-10-21

Family

ID=33160181

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ZA2004/000036 WO2004089803A1 (fr) 2003-04-11 2004-03-29 Benne d'exploitation miniere

Country Status (1)

Country Link
WO (1) WO2004089803A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007079504A1 (fr) * 2006-01-03 2007-07-12 Berend Jan Werkman Benne miniere
WO2007150078A2 (fr) * 2005-10-31 2007-12-27 Berend Jan Werkman Benne minière

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2104495A (en) * 1981-08-26 1983-03-09 Rotaque Pty Ltd Skips and flasks
RU2025443C1 (ru) * 1992-07-06 1994-12-30 Филиал Новочеркасского политехнического института в г.Шахты Устройство для разгрузки и загрузки скипа

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2104495A (en) * 1981-08-26 1983-03-09 Rotaque Pty Ltd Skips and flasks
RU2025443C1 (ru) * 1992-07-06 1994-12-30 Филиал Новочеркасского политехнического института в г.Шахты Устройство для разгрузки и загрузки скипа

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007150078A2 (fr) * 2005-10-31 2007-12-27 Berend Jan Werkman Benne minière
WO2007150078A3 (fr) * 2005-10-31 2008-02-07 Berend Jan Werkman Benne minière
WO2007079504A1 (fr) * 2006-01-03 2007-07-12 Berend Jan Werkman Benne miniere

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