EP1847653A1 - Appareil pour l'accessibilité au moyen de commande - Google Patents

Appareil pour l'accessibilité au moyen de commande Download PDF

Info

Publication number
EP1847653A1
EP1847653A1 EP07106383A EP07106383A EP1847653A1 EP 1847653 A1 EP1847653 A1 EP 1847653A1 EP 07106383 A EP07106383 A EP 07106383A EP 07106383 A EP07106383 A EP 07106383A EP 1847653 A1 EP1847653 A1 EP 1847653A1
Authority
EP
European Patent Office
Prior art keywords
drive means
frame
accessibility
drive
chain
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
Application number
EP07106383A
Other languages
German (de)
English (en)
Other versions
EP1847653B1 (fr
Inventor
Roberto Ros
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.)
Casagrande SpA
Original Assignee
Casagrande SpA
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 Casagrande SpA filed Critical Casagrande SpA
Publication of EP1847653A1 publication Critical patent/EP1847653A1/fr
Application granted granted Critical
Publication of EP1847653B1 publication Critical patent/EP1847653B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/13—Foundation slots or slits; Implements for making these slots or slits
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/18—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels
    • E02F3/20—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels with tools that only loosen the material, i.e. mill-type wheels
    • E02F3/205—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels with tools that only loosen the material, i.e. mill-type wheels with a pair of digging wheels, e.g. slotting machines

Definitions

  • the present invention concerns an apparatus for accessibility to drive means inside a frame, so as to allow both easy maintenance and also a rapid and effective dismantling of the drive means.
  • the present invention concerns an apparatus for accessibility to drive means which is able to slide between a working position and an inactive position in an excavation device.
  • excavation devices are known in order to excavate ditches, trenches, wells, diaphragms or other, which have two pairs of milling wheels with horizontal shafts and substantially parallel, during use, with the excavation surface; they are driven by drive means, and the motion is usually transferred to the shaft of the milling wheels by means of chain-type transmission means.
  • said known apparatuses do not allow the easy use of drive means with high power and great size, in particular great thickness, in the direction of their drive shaft.
  • the apparatus for accessibility to said drive means with great thickness should also have a great thickness and, in this way, would be very bulky, with a negative influence on the structure of the excavation device itself.
  • a known apparatus with great thickness inevitably does not allow to make the excavation of diaphragms of limited size, which are in particular demand in the market of excavation devices.
  • One purpose of the present invention is to achieve an apparatus for accessibility to drive means which allows complete access to said drive means and which is not bulky.
  • Another purpose of the present invention is to achieve a method to allow accessibility to drive means which facilitates the maintenance and/or removal of said drive means.
  • the Applicant has devised, tested and embodied the present invention to overcome the shortcomings of the state of the art and to obtain these and other purposes and advantages.
  • an apparatus allows accessibility to drive means disposed inside a frame, which cooperates with chain-type transmission means and with tensioning means able to tension said chain-type transmission means.
  • the apparatus comprises guide means able to allow the drive means to slide between a working position, in which said transmission means is in an operating condition under tension, so as to transmit motion from said drive means, and an inactive position, in which said transmission means is in a slack, non-operating condition.
  • the apparatus according to the present invention also comprises at least an access wall, which is able to be moved, when the drive means is in the inactive position, to an open position towards the outside of said frame, in which open position said access wall is able to selectively allow access at least to the drive means.
  • said wall comprises sliding coupling means, able to cooperate with said guide means, so as to achieve the sliding of the drive means and to selectively draw the latter in rotation to an accessible position, at least partly outside said frame, when said access wall is moved to the open position.
  • the apparatus for accessibility to drive means thus achieved allows easy and complete access to said drive means, which is drawn outside the frame together with the opening of the access wall.
  • the apparatus is thus extremely compact, not at all bulky, economical to make and has limited thickness.
  • fig. 1 shows an apparatus 60 for accessibility to at least a hydraulic motor 20, in this case associated with an excavation device 10, suitable to operate in any type of ground and able to make ditches, trenches, wells, diaphragms with a structural function, like the perimeter walls of an underground car park, or with the function of foundations, such as for a building, or again with a waterproofing function, usually used in dams.
  • the excavation device 10 comprises an excavation head 11 (figs. 1-3), having a substantially box-like external shape and possibly connected in its upper part to a guide, carried by a self-propelled means.
  • the milling wheels 13 From the lower part of the excavation head 11 two pairs of milling wheels 13 extend, with a substantially horizontal axis of rotation X (figs. 1-3).
  • the milling wheels 13 define during use an excavation front 24, substantially parallel to the axis of rotation X (figs. 1 and 2).
  • the milling wheels 13 are advantageously counterrotating, so as to balance stresses during excavation and to convey and draw the debris and crushed materials produced by crushing from the excavation towards a central suction zone 14, located between the milling wheels 13 (fig. 1).
  • Each milling wheel 13 is equipped on the periphery with excavation means 26, which defines said excavation front 24 (figs. 1 and 2).
  • Each pair of milling wheels 13 is also drawn in rotation by a transmission chain 25 (fig. 1).
  • Each transmission chain 25 is also provided with excavation means 26 (figs. 1 and 2), which extend on the external side, during use, of the chain 25, that is, the side able to face towards the ground to be excavated.
  • the excavation front 24 is continuous and uniform, without dead spaces and has a section that substantially coincides with the greater section of the excavation head 11 (fig. 1).
  • Each chain 25 is driven by said hydraulic motor 20, in this case disposed above the milling wheels 13 (figs. 1 and 2).
  • the hydraulic motor 20 has a fixed drive shaft 21 and a rotary casing 22, on the periphery of which there is a toothed crown 23.
  • the toothed crown 23 is coupled with the chain 25 and draws it into rotation (fig. 6).
  • the hydraulic motor 20 cooperates with tensioning means 59, which is able to tension said chain 25 (figs. 1 and 2).
  • the chain 25 is thus selectively tensioned, by the tensioning means 59, in an operating condition wherein the motion is transmitted by the hydraulic motor 20 in this case in order to draw in rotation said milling wheels 13.
  • the tensioning means 59 When the chain 25 is not tensioned by the tensioning means 59, that is, it is slack, it is not able to transmit efficiently the rotary motion from the hydraulic motor 20, for example in those cases when the hydraulic motor 20, the chain 25, the tensioning means or other devices inside the frame 11 are subjected to maintenance and/or removed.
  • the apparatus 60 also comprises a bearing structure 62 (figs. 4 and 6), substantially box-shaped and disposed during use inside the excavation head 11, so as to support the hydraulic motor 20 (fig. 1).
  • the bearing structure 62 has a housing compartment 66 in which the hydraulic motor 20 is inserted and fixed, and is defined by a first surface 63, provided with first guide means 67, and a second surface 64, on which a second guide means 68 is disposed (fig. 6).
  • the first and second guide means 67, 68 are thus connected with said hydraulic motor 20 and, cooperating with fixed guides 71 inside the excavation head 11 and with sliding coupling means 70 or external guides, as will be explained in detail hereafter, are able to allow the latter to slide between a working position, in which said chain 25 is in an operating condition under tension so as to transmit the motion from said hydraulic motor 20, and an inactive position (figs. 1-3) in which said chain 25 is in a non-operating, slack condition.
  • Said first surface 63 and second surface 64 are connected by connection elements 65 and are therefore solidly rotatable with the access surface 61 (fig. 6).
  • the bearing structure 62 and hence said first surface 63 and second surface 64, is connected to an access wall 61 (figs. 1, 2, 3 and 5), which is mobile with respect to the excavation head 11, advantageously pivoted to said excavation head 11 along a pivoting axis Z, substantially parallel to said axis X.
  • the access wall 61 is able to be moved, when the hydraulic motor 20 is in said inactive position, to an open position, towards the outside of the excavation head 11, in order to selectively allow access at least to said hydraulic motor 20 (fig. 2).
  • the excavation device 10 has two pairs of milling wheels 13 and therefore two hydraulic motors 20, two access walls 61 are made, opening on opposite sides of the excavation head 11 (fig. 3) and each one connected to two respective bearing structures 62.
  • said access wall 61 comprises sliding coupling means 70 (fig. 4), such as grooved guides, able to cooperate with said first and second guide means 67, 68 so as to achieve the sliding of said hydraulic motor 20 and to selectively draw the latter in rotation around said pivoting axis Z, to an accessible position outside the excavation head 11, when the access wall 61 is moved to the open position.
  • sliding coupling means 70 such as grooved guides
  • first guide means 67 cooperates by means of a single plane face with the sliding coupling means 70, while the second guide means 68 cooperates with three of their plane faces with the sliding coupling means 70, thus preventing jams in the sliding of the bearing structure 62 due for example to constructional errors or deformations in the structure.
  • the apparatus 60 comprises at least a tie rod element 69, connected to said bearing structure 62 and able to be maneuvered so as to move the hydraulic motor 20 and said access wall 61 towards the outside (fig. 2).
  • the hydraulic motor 20 can be uncoupled from the chain 25, for example once the access wall 61 is open (figs. 2 and 3) or even before this step, and from the sliding coupling means 70, raised by means of a crane or suchlike and sent for maintenance.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Earth Drilling (AREA)
  • Threshing Machine Elements (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Selective Calling Equipment (AREA)
EP07106383A 2006-04-21 2007-04-18 Appareil pour l'accessibilité au moyen de commande Not-in-force EP1847653B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000105A ITUD20060105A1 (it) 2006-04-21 2006-04-21 Apparato per l'accessibilita' a mezzi di motorizzazione

Publications (2)

Publication Number Publication Date
EP1847653A1 true EP1847653A1 (fr) 2007-10-24
EP1847653B1 EP1847653B1 (fr) 2010-09-08

Family

ID=38292314

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07106383A Not-in-force EP1847653B1 (fr) 2006-04-21 2007-04-18 Appareil pour l'accessibilité au moyen de commande

Country Status (4)

Country Link
EP (1) EP1847653B1 (fr)
AT (1) ATE480671T1 (fr)
DE (1) DE602007008970D1 (fr)
IT (1) ITUD20060105A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3107537A1 (fr) * 2020-02-25 2021-08-27 Soletanche Freyssinet Machine d’excavation ayant un châssis muni d’ailes de guidage

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0114584A2 (fr) * 1983-01-24 1984-08-01 CASAGRANDE SpA Excavateur à fraise en chaîne
EP0649716A1 (fr) * 1993-10-26 1995-04-26 CASAGRANDE SpA Fraise pour former joints de diaphragme
FR2806111A1 (fr) * 2000-03-13 2001-09-14 Cie Du Sol Appareil de forage en terrain dur

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0114584A2 (fr) * 1983-01-24 1984-08-01 CASAGRANDE SpA Excavateur à fraise en chaîne
EP0649716A1 (fr) * 1993-10-26 1995-04-26 CASAGRANDE SpA Fraise pour former joints de diaphragme
FR2806111A1 (fr) * 2000-03-13 2001-09-14 Cie Du Sol Appareil de forage en terrain dur

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3107537A1 (fr) * 2020-02-25 2021-08-27 Soletanche Freyssinet Machine d’excavation ayant un châssis muni d’ailes de guidage
EP3872267A1 (fr) * 2020-02-25 2021-09-01 Soletanche Freyssinet Machine d'excavation ayant un chassis muni d'ailes de guidage

Also Published As

Publication number Publication date
DE602007008970D1 (de) 2010-10-21
EP1847653B1 (fr) 2010-09-08
ATE480671T1 (de) 2010-09-15
ITUD20060105A1 (it) 2007-10-22

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