EP1870373A2 - Appareil de commande pour excavatrices - Google Patents

Appareil de commande pour excavatrices Download PDF

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Publication number
EP1870373A2
EP1870373A2 EP07110465A EP07110465A EP1870373A2 EP 1870373 A2 EP1870373 A2 EP 1870373A2 EP 07110465 A EP07110465 A EP 07110465A EP 07110465 A EP07110465 A EP 07110465A EP 1870373 A2 EP1870373 A2 EP 1870373A2
Authority
EP
European Patent Office
Prior art keywords
winding
axis
unwinding
control apparatus
flexible pipe
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.)
Withdrawn
Application number
EP07110465A
Other languages
German (de)
English (en)
Other versions
EP1870373A8 (fr
EP1870373A3 (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 EP1870373A2 publication Critical patent/EP1870373A2/fr
Publication of EP1870373A8 publication Critical patent/EP1870373A8/fr
Publication of EP1870373A3 publication Critical patent/EP1870373A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
    • E02F9/2275—Hoses and supports therefor and protection therefor
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/2016—Winches

Definitions

  • the present invention concerns a control apparatus for excavator machines which is suitable to control and regulate the position of the winding/unwinding means, for example a drum or bobbin, for flexible pipes, for example, but not only, to suck up the excavation debris and/or to deliver fluid to remove the debris.
  • the winding/unwinding means for example a drum or bobbin
  • flexible pipes for example, but not only, to suck up the excavation debris and/or to deliver fluid to remove the debris.
  • the present invention concerns a control apparatus able to modify the position of the winding means, so that said pipe is always wound/unwound accurately and regularly as the winding/unwinding position varies, that is, as the filling level of the winding means varies, whether said means be a drum, a bobbin or other analogous or similar means.
  • the pipe is mechanically accompanied from the fixed articulation point towards the relative helical guide by means of a roller, made rotary by deriving the rotation motion from the cylindrical drum by means of a slider which cooperates with said helical guides.
  • the winding system is greatly influenced by the position of the point of entry/exit of the pipe as the filling level of the drum or reel varies. It therefore happens that the pipe, as it winds or unwinds, can be disposed too much inclined with respect to the axis of the cylindrical drum, that is, it forms an acute angle of less than a determinate value and too distant from the ideal condition of a right angle. Consequently, it deforms, it does not wind correctly and, in the event of overlapping of the pipes, it is damaged.
  • Excavator machines which have means to guide the pipe that causes the pipe to wind in multiple layers around a winder, but in the same position to substantially form a winding disk with a thickness determined by the diameter of the pipe and a diameter which is a function of the number of winding revolutions on itself.
  • These known machines also have the disadvantage that they can use pipes which are not too long, to prevent an excessive increase in the sizes, particularly the diameter, of the winding disk, and can cause deformations and breakages of the pipe due to the stresses to which it is subjected both by the winder and also by the overlapping layers of pipe.
  • Purpose of the present invention is to achieve a control apparatus which allows to wind/unwind the pipe that sucks up the debris and/or delivers the fluid that removes the debris in an excavator machine around the winding means in a correct and accurate manner, as the filling level of the winding drum or reel varies, preserving the pipe from deformations and damage.
  • Another purpose is also to allow winding over several layers, using a control apparatus which is economical, easy to make and compatible with any bulk of the excavator machine required.
  • 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.
  • a control apparatus can be applied to an excavator machine having at least a flexible pipe, for example to suck up the debris by means of a fluid, and/or to deliver a fluid to remove the debris, and/or hoses, individual or in bundles, for fluid-dynamic and/or electric commands, guided through a fixed articulation point, on one side towards the excavation and on the other side towards means to wind/unwind said flexible pipe.
  • the winding means is able to rotate around an axis of rotation in order to effect operations to wind/unwind said pipe, along an axis or direction of winding/unwinding.
  • the axis of winding/unwinding is substantially defined by the line that connects the point of entry/exit of the flexible pipe into/from the winding means, which is continuously variable during the winding/unwinding step, to the fixed articulation point.
  • the winding/unwinding means consists in one embodiment of the invention of a drum or reel, but a bobbin may equally well be used, or other suitable analogous or similar means.
  • the control apparatus has said winding means able to be selectively inclined during the winding/unwinding operations according to the level of filling of the winding means by the flexible pipe, that is, the number of revolutions made by the flexible pipe around the winding means.
  • said axis of winding/unwinding is always substantially perpendicular, or deviating from the perpendicular with a desired margin of tolerance, with respect to the axis of rotation of the winding means, although the axis of winding/unwinding is continuously modified, assuming a plurality of distinct angular positions during the winding/unwinding operations, according to the filling level of the winding means.
  • control apparatus comprises sensor means able to measure at least one parameter between the number of rotations or revolutions made by said winding means, in this way determining, from the knowledge of the diameter of the drum, the position of entry/exit of the pipe, and the angle defined between the axis of rotation of the winding means and the axis of winding/unwinding.
  • a command and control unit which cooperates with said sensor means and, by activating actuator means, conditions the position of the winding means.
  • control apparatus allows to wind/unwind said pipe around the winding means in a correct and accurate manner, as the filling level of the winding means varies, preserving the pipe from deformations and damage.
  • the pipe can be directed exactly according to the pre-determined winding disposition.
  • the present invention also allows to wind the flexible pipe in several layers, using a control apparatus that is economical, easy to make and compatible with any bulk required for the excavator machine.
  • fig. 1 shows a control apparatus 10 for an excavator machine 19 having at least a flexible pipe 13, in the case shown here, which is guided by guide means 18 through a fixed deflection device 17, or articulation point, on one side towards the excavation and on the other side towards two cylindrical drums 11, opposite each other, that is, disposed on opposite sides of the machine 19.
  • Each cylindrical drum 11 is able to rotate around its own longitudinal axis Y in order to effect operations to wind/unwind said pipe 13 along an axis or direction X of winding/unwinding, which is defined as the straight line that joins the point of entry/exit into/from the cylindrical drum 11 of the flexible pipe 13 with said fixed deflection device 17 and whose position is variable, substantially continuously, during said winding/unwinding operations.
  • the pipe 13 can be wound to form one or more layers on the lateral surface of the cylindrical drum 11.
  • the two drums 11 can wind/unwind flexible pipes 13 of the same type, or one of the two drums 11 is able to wind/unwind a flexible pipe 13 to suck up and collect the debris deriving from the excavation, while the other drum 11 is able to wind/unwind a flexible pipe 13 normally consisting of hoses for fluid-dynamic and/or electric commands.
  • control apparatus comprises a single drum 11 which winds/unwinds a corresponding flexible pipe 13.
  • the point of entry/exit of the flexible pipe 13 is defined by the point of upper tangency of the axis X with corresponding circular sections of the cylindrical drum 11 made perpendicularly, or deviating by a determinate amount with respect to the perpendicular, to said axis Y (fig. 2).
  • the cylindrical drum 11 has a lateral surface 22 around which the pipe 13 winds, in spirals substantially concentric to the axis Y (fig. 6).
  • the cylindrical drum 11 has guide seatings 12 which define a helical development along the axis Y, advantageously with a constant pitch, made on the lateral surface 22 and along which the pipe 13 winds.
  • the lateral surface 22 is substantially smooth and the cylindrical drum 11 is equipped with containing and guiding spirals with a helix 12, which assist the winding of the pipe 13 with a constant pitch helix.
  • the cylindrical drums 11 are made to rotate on themselves by means of motor means 25, of a known type.
  • Each cylindrical drum 11 is put with its longitudinal axis Y substantially parallel to the supporting plane of the machine 19, in this case the horizontal plane P (fig. 2), and is rotatably connected to the excavator machine 19.
  • Each cylindrical drum 11 is thus also inclinable around an axis Z, substantially orthogonal to the axis Y and to the supporting plane of the machine 19.
  • the cylindrical drum 11 can therefore be selectively inclined, based on the commands of a command and control unit 20 and as will be explained hereafter, in a plurality of distinct angular positions, so that the axis Y is always substantially perpendicular or deviating from the perpendicular according to a desired margin of tolerance, with respect to the axis X of winding/unwinding.
  • the axis Y that is, its projection on the external periphery of the cylindrical drum 11, when seen plane, forms an angle ⁇ substantially a right angle or comprised in an interval of desired amplitude according to needs (figs. 1 and 4).
  • the axis X is always substantially perpendicular, or deviating from the perpendicular according to a desired margin of tolerance, with respect to a straight line parallel to the axis Y of rotation and passing through the point of entry/exit of the flexible pipe 13 into/from the cylindrical drum 11.
  • the cylindrical drum 11 in a first position, has the axis Y of rotation substantially orthogonal to the longitudinal direction S of the excavator machine 19, indicated by Y' in figs. 4 and 5, while in a second position (figs. 3, 4 and 5), continuously variable during winding/unwinding, the axis Y has its angular position modified and is inclined by a determinate angle ⁇ , other than 90°, in this case an acute angle, with respect to the longitudinal direction S of the excavator machine 19, indicated by Y" in figs. 4 and 5.
  • angle ⁇ can be either acute or obtuse, according to the winding/unwinding necessities and the position of the fixed deflection device 17 with respect to the drum 11.
  • each cylindrical drum 11 is achieved by means of hydraulically actuated jacks 16, or other suitable and similar actuator means.
  • the operation to wind/unwind the flexible pipe 13 takes place and thus the axis X of winding/unwinding moves continuously, sweeping substantially at least a portion of plane parallel to the supporting plane of the excavator machine 19, between said first position and the second position, that is, between a lesser and a greater inclination of the drum 11 with respect to the longitudinal direction S of the excavator machine 19.
  • the flexible pipe 13 is associated by means of the guide means 18 with the deflection device 17, which is at partly rotatable on itself and substantially functions as a fixed point with respect to the excavator machine 19.
  • the flexible pipe 13 is thus guided through the deflection device 17 towards the excavation, according to needs.
  • the winding/unwinding of the pipe 13 is achieved by rotating the cylindrical drum 11 around its own axis Y and by simultaneously inclining the cylindrical drum 11, which moves between said first and second position.
  • the axis X of winding/unwinding, along which the flexible pipe 13 unwinds, is advantageously kept substantially perpendicular to said axis Y.
  • the winding spirals of the pipe 13 are thus disposed substantially parallel to each other and substantially orthogonal to said axis Y when they are wound/unwound around said lateral surface 22, that is, in other words, the winding spirals of the pipe 13 are parallel to the lateral surface 22 of the cylindrical drum 11.
  • the control apparatus 10 comprises sensor means 14, 15; the first are able to measure the number of rotations made by each cylindrical drum 11, thus determining the point of entry/exit of the flexible pipe 13 into/from the cylindrical drum 11, while the second are able to measure the angle between the axis Y of rotation of the cylindrical drum 11 and the axis X of winding/unwinding and/or the longitudinal direction S of the excavator machine 19.
  • the sensor means comprise digital encoders of lengths and angles, such as a first sensor of revolutions with an encoder 14 which measures the number of revolutions of the drum 11, and a second sensor of angles with an encoder 15, which in this case measures the amplitude of the angle ⁇ , in order to control the inclination.
  • said command and control unit 20 cooperates with the sensor means 14, 15, detecting the position in rotation of the cylindrical drum 11 and the number of revolutions made with respect to an initial reference position, in this case said first position of the cylindrical drum 11, in order to condition the jacks 16 and hence incline the cylindrical drums 11 according to the winding/unwinding needs.
  • the command and control unit 20 comprises a microprocessor and a controller of programmable logic circuits, PLC, to program the memories of the microprocessor in order to execute and control the logical functions.
  • PLC programmable logic circuits
  • multi-layer winding we mean that the flexible pipe 13, having effected a first filling of the drum 11 by means of a first layer which is coaxial with the axis Y, is wound again, in this case starting from outside the drum 11 towards the inside, achieving a second layer which develops according to the same axis Y and which is coaxial with the latter; a possible third or fourth layer are made in a substantially identical manner.
  • This is advantageous also thanks to the application of the PLC control system, which is able to activate and de-activate the drums, both in rotation and in inclination, according to the state of winding/unwinding and the level of filling achieved by the winding drum.
  • deflection device 17 could be positioned in different zones than in the illustration in fig. 2, such as for example in proximity with the head of the arm of a crane or other, to satisfy contingent requirements.
  • the axis Z of inclination of the cylindrical drums 11 can therefore have other inclinations too, apart from being substantially perpendicular to the plane P.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)
EP07110465A 2006-06-21 2007-06-18 Appareil de commande pour excavatrices Withdrawn EP1870373A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITUD20060160 ITUD20060160A1 (it) 2006-06-21 2006-06-21 Apparato di controllo per macchine di scavo

Publications (3)

Publication Number Publication Date
EP1870373A2 true EP1870373A2 (fr) 2007-12-26
EP1870373A8 EP1870373A8 (fr) 2008-04-09
EP1870373A3 EP1870373A3 (fr) 2008-08-06

Family

ID=37519704

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07110465A Withdrawn EP1870373A3 (fr) 2006-06-21 2007-06-18 Appareil de commande pour excavatrices

Country Status (2)

Country Link
EP (1) EP1870373A3 (fr)
IT (1) ITUD20060160A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023048725A1 (fr) * 2021-09-24 2023-03-30 Paccar Inc Commande électronique autonome de treuils

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2044129A5 (fr) * 1969-05-09 1971-02-19 Creusot Forges Ateliers
FR2278619A1 (fr) * 1974-05-24 1976-02-13 Ter Perfectionnements aux treuils
FR2293390A1 (fr) * 1974-12-04 1976-07-02 Havre Chantiers Dispositif d'asservissement de trancannage pour treuil a axe vertical
US4002321A (en) * 1975-07-07 1977-01-11 Cecil A. Pelts Tiltable drums for winding hoist lines
US4553590A (en) * 1981-03-19 1985-11-19 Hidden Valley Associates Apparatus for pumping subterranean fluids
GB2296001A (en) * 1994-12-17 1996-06-19 Asep Bv Winch apparatus
JP2000351581A (ja) * 1999-06-08 2000-12-19 Yanmar Diesel Engine Co Ltd ウインチ装着バックホー作業機
US20020130210A1 (en) * 2001-03-15 2002-09-19 Schellekens Adrianus Cornelis Reel suspension for high-pressure hose for cleaning pipes
WO2003053821A1 (fr) * 2001-12-13 2003-07-03 Foeckersperger Walter Dispositif de treuil a cable dote d'un treuil pivotant
US20050056819A1 (en) * 2003-09-17 2005-03-17 Rudolf Pockl Winch for a construction machine

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2044129A5 (fr) * 1969-05-09 1971-02-19 Creusot Forges Ateliers
FR2278619A1 (fr) * 1974-05-24 1976-02-13 Ter Perfectionnements aux treuils
FR2293390A1 (fr) * 1974-12-04 1976-07-02 Havre Chantiers Dispositif d'asservissement de trancannage pour treuil a axe vertical
US4002321A (en) * 1975-07-07 1977-01-11 Cecil A. Pelts Tiltable drums for winding hoist lines
US4553590A (en) * 1981-03-19 1985-11-19 Hidden Valley Associates Apparatus for pumping subterranean fluids
GB2296001A (en) * 1994-12-17 1996-06-19 Asep Bv Winch apparatus
JP2000351581A (ja) * 1999-06-08 2000-12-19 Yanmar Diesel Engine Co Ltd ウインチ装着バックホー作業機
US20020130210A1 (en) * 2001-03-15 2002-09-19 Schellekens Adrianus Cornelis Reel suspension for high-pressure hose for cleaning pipes
WO2003053821A1 (fr) * 2001-12-13 2003-07-03 Foeckersperger Walter Dispositif de treuil a cable dote d'un treuil pivotant
US20050056819A1 (en) * 2003-09-17 2005-03-17 Rudolf Pockl Winch for a construction machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023048725A1 (fr) * 2021-09-24 2023-03-30 Paccar Inc Commande électronique autonome de treuils

Also Published As

Publication number Publication date
EP1870373A8 (fr) 2008-04-09
EP1870373A3 (fr) 2008-08-06
ITUD20060160A1 (it) 2007-12-22

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