Classifications

• • E—FIXED CONSTRUCTIONS
  • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
  • E02B—HYDRAULIC ENGINEERING
  • E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
  • E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
  • E02B3/12—Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
  • E02B3/128—Coherent linings made on the spot, e.g. cast in situ, extruded on the spot
• • E—FIXED CONSTRUCTIONS
  • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
  • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
  • E01C19/48—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for laying-down the materials and consolidating them, or finishing the surface, e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ
  • E01C19/4886—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for laying-down the materials and consolidating them, or finishing the surface, e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ for forming in a continuous operation kerbs, gutters, berms, safety kerbs, median barriers or like structures in situ, e.g. by slip-forming, by extrusion
  • E01C19/4893—Apparatus designed for railless operation

Definitions

• the present invention generally relates to machines for the continuous concreting of ditches, called sliding formwork machine.
• the invention relates more particularly to a machine for the continuous concreting of ditches having a cross section of generally trapezoidal shape.
• the machine comprises means for advancing the machine along the ditch and a concrete feed hopper associated with a formwork.
• Said formwork is located at the rear of the hopper and is capable of smoothing said concrete applied against the bottom and flanks of the ditch during the advance of the machine.
• Such a machine is also very bulky in width, which makes it difficult to transport from one point to another without being disassembled.
• the formwork of the machine makes it possible to shape the concrete poured into the ditch dug in the ground, because of the profile of said formwork corresponding to the desired trapezoidal profile for the concrete ditch. But, it is observed that the concrete poured into the ditch is not sufficiently compressed, which can affect the quality of the concrete ditch and its behavior over time.
• the formwork has a fixed geometry that does not allow, without changing formwork or without adding an additional body, to concreting ditches whose sides have inclinations and / or different heights from one ditch to another.
• the object of the present invention is to propose a machine whose means of advance are simplified, and which makes it possible to better compress the concrete poured into the ditch during the advance of the machine, compared to the machines of the prior art. .
• Another object of the invention is to provide an easier machine to maneuver to easily follow the curves of the ditch.
• Another object of the invention is to provide a machine for which the risk of stagnation is limited.
• the invention also aims to provide a machine of smaller size.
• the invention relates to a machine for continuous concreting ditches having a cross section of generally trapezoidal shape, the machine being devoid of support means on the outer edges of the ditch, and comprising at least means for advance of the machine along and inside the ditch, a concrete feed hopper equipped with vibrating means for depositing the concrete in the ditch during the advance of the machine, and a formwork whose walls, of generally trapezoidal cross section, delimit with the bottom and flanks of the ditch a volume intended to be filled with concrete, said formwork being located at the rear of the feed hopper in the direction of movement of the machine, said formwork being able, by sliding on the concrete poured into the ditch, smoothing said concrete against the bottom and flanks of the ditch during the advance of the machine.
• the machine according to the invention is characterized in that the means for advancing the machine are formed by a motorized winch comprising a drum and a cable whose one end is fixed to the drum and whose other end is intended to be attached to an element anchored in the or near the ditch forward and away from the machine, in the direction of movement of the machine, the advance of the machine is by winding the cable around the drum.
• the machine has support means on the bottom of the ditch, the center of gravity of the machine is located behind said support means, with respect to the direction of advance of the machine, said center of gravity of the machine preferably being located at the level of the formwork, so that the formwork is able to exert a pressure force on the concrete poured into the ditch during the advance of the machine.
• a winch as means of advance of the machine simplifies the design of the machine compared to the use of caterpillars.
• the machine can be designed in a more compact way, which allows it to be easily transported, without being dismantled. Due to the compactness of the machine, it can be driven by a single person who is either carried by said machine or remote by driving said machine for example using a remote control.
• the use of a winch to advance the machine reduces the bulk around the formwork and thus not to hinder the distribution of concrete in the bottom and on the sides of the ditch.
• the use of a winch instead of tracks can also facilitate the advance of the machine by reducing the risk of stagnation.
• said support means define an axis, substantially horizontal and orthogonal to the direction of advance of the machine, around which the machine tends to tilt backwards when it is located inside the ditch.
• the formwork then bears on the concrete poured into the ditch and thus exerts a pressure force by smoothing it during the advance of the machine, which makes it possible to compress the concrete and thus to obtain an improved quality ditch. with a good behavior in time. Indeed, during operation of the machine, said machine rests, through the formwork, mainly on the concrete poured into the ditch.
• the machine described in patent EP 0.386.209 is equipped with four lateral bearing pads and a crawler which extends longitudinally between the front and the rear of the machine so that the center the gravity of this machine is between the front and rear ends of the support means formed by said track, and possibly the pads. It follows that the machine is not brought to tilt backwards and therefore does not allow the formwork to bear on the spilled concrete.
• the lack of need for support on the outer edges of the ditch allows the machine to access ditches in very steep areas or with obstacles such as trees or lampposts.
• the machine according to the invention It then extends completely into the ditch and the formwork relies mainly on the concrete poured into the ditch, allowing the formwork to slide over the spilled concrete, which stabilizes the machine and improves the smoothing of the concrete.
• the support means of the machine on the bottom of the ditch are located in front of the feed hopper with reference to the direction of movement of the machine.
• Positioning the support means of the machine in front of the formwork and the hopper makes it possible to ensure that the center of gravity of the machine, because of the weight of the hopper containing the concrete and the formwork, as well as the elements the machine located at the form, is located behind the support means to allow the machine and thus the formwork to come from behind on the concrete dumped into the ditch.
• the drum of the winch is mounted at the rear of the machine and the machine comprises means for guiding the cable between the front and the rear of the machine making it possible to keep the cable oriented. in the longitudinal direction of the machine to allow proper winding of the cable around the drum.
• These guide means may be a longitudinal tubular passage intended to keep the cable clean before winding around the winch drum and guide it, at least on arrival at the drum, in a direction substantially orthogonal to the axis of the drum .
• each side wall of the formwork is equipped with means for shaping the upper part of the concrete layer spread on the side of the ditch opposite said side wall of the formwork;
• said shaping means equipping each side wall of the formwork are formed by an elongate member having at least one longitudinal face, said useful, able to smooth the upper part of said concrete layer;
• said forming means equipping each side wall of the formwork are formed by an elongated element, preferably of triangular section, said elongated element comprising at least two longitudinal faces said useful capable of selectively smoothing the upper part of said concrete layer; the angle between said longitudinal useful faces of the elongated element is then chosen so that, for each of said inclination positions of the side wall of the formwork, the elongated element is capable of being oriented so that one useful longitudinal faces form with the floor of the formwork substantially the same angle from one inclination position to another of said side wall; it comprises sliding support means and / or rolling on the bottom of the ditch, in the manner of a ski or a roller, which have
• each longitudinal edge of the floor is then equipped with means for scraping the edge of the side wall of the formwork hinged to said longitudinal edge of the floor, so as to seal against the concrete at the hinge connections between the longitudinal edges of the floor.
• the machine comprises means for guiding the concrete deposited by the feed hopper toward the rear of the machine, called cheeks, to prevent the concrete from spreading towards the front of the machine, said means for guiding the concrete , preferably formed by flexible plates, for example of rubber, being arranged facing and on at least a portion of the height of the side portions of the feed hopper; remote control means, for example using a remote control, means for advancing the machine are provided; there is provided means for adjusting the height of each of said shaping means relative to the corresponding side wall.
• At least a portion of the operating members of the machine are arranged vertically and / or inside the formwork, said operating members forming weighting means of the formwork so as to allow said formwork to exert a pressure force on the concrete layer applied to the bottom and flanks of the ditch during the movement of the machine.
• FIG. 2 is a perspective view of the front of the machine according to the invention.
• FIG. 3 is a perspective view from above of the machine according to the invention.
• - Figure 4 is a perspective view of the rear of the machine according to the invention;
• FIG. 5 is a perspective view of a triangular section bar forming means for shaping the concrete layer spread on a sidewall of the ditch;
• - Figure 6 is a partial view of the machine according to the invention showing the height adjustment means of the triangular bar of Figure 5;
• FIG. 7 is a perspective view of the sliding bearing means of the machine according to the invention.
• FIG. 8 is a perspective view of the frame of the machine according to the invention carrying the fixed central portion of the hopper and the support structure of the winch;
• - Figure 9 is a perspective view of the floor of the formwork of the machine according to the invention;
• FIG. 10 is a perspective view of a side wall of the formwork of the machine according to the invention.
• FIG. 11 is a cross-sectional view of the machine lying entirely inside the ditch to be concreted.
• FIGs 1 and 2 there is shown a machine 1 for the continuous concreting of ditches 100 dug in the earth, also called earthworks, having a cross section of generally trapezoidal shape, the small base of the trapezium corresponding to the bottom of the ditch.
• the machine mainly comprises feed means 3 of the machine along and inside the ditch, a feed hopper 4 of concrete and a formwork 5.
• the formwork 5 is located at the rear of the feed hopper 4 in the direction of movement of the machine. Said formwork 5, called sliding formwork, is able, by sliding on the concrete poured into the ditch, smoothing said concrete against the bottom and the flanks of the ditch during the advance of the machine.
• the formwork being devoid of support means on the outer edges 104 of the ditch, said formwork can rest, inside the ditch on the spilled concrete.
• said formwork extends cantilever hopper which itself extends cantilever of the front part of the machine equipped with support means 7 (detailed below) against the bottom 101 of the ditch.
• said support means 7 are located in front of the center of gravity of the machine with reference to the direction of advance of the machine, whereas the rear of the machine is devoid of support means against the machine. bottom of the ditch, which tends to tilt the machine back because of the lack of back support of the same height as the height of the support means to the front.
• the formwork is supported on the concrete B dumped into the ditch, which allows its weight to compress and smooth the said concrete to obtain a concrete ditch quality.
• the formwork thus bears on the concrete poured both by its bottom wall and by its side walls inclined in V.
• the side walls of the formwork are also equipped with longitudinal flanges 8 which make it possible to limit the height of the poured concrete against the flanks 102, 103 of the ditch and to shape the upper part of this layer of concrete.
• the flanges 8 secured to the side walls of the formwork also bear on the upper layer of the concrete, which further improves its compression and the smoothing of the upper part of the concrete layer forming the sides of the concrete ditch.
• the wings 8 limit the height of the concrete spread on the flanks of the ditch and also rely on the concrete that flows, so that it slides on the high layer of concrete spread to the level of each side of the ditch by smoothing it.
• the wings further guide the machine laterally inside the ditch by preventing the machine from moving sideways.
• the advance means 3 of the machine are formed by a motorized winch comprising a drum 32 and a cable 31 whose one end is fixed to the drum 32 and whose other end is intended to be attached to a weighted element (not shown) anchored in the ditch forward and away from the machine, in the direction of movement of the machine.
• the advance of the machine is by winding the cable 31 around the drum 32, the weighted element remaining anchored in the ditch during the winding of the cable around the drum, and being moved at regular intervals.
• the machine comprises a motor 10 for rotating the drum 32 of the winch.
• Said motor can be controlled so as to vary the winding speed of the cable 31 and thus the speed of advance of the machine 1.
• the drum 32 of the winch is mounted at the rear end of the machine 1 and an angular gear pulley 33 (see Figures 3 and 4) of the cable 31.
• the presence of this pulley and the arrangement of the winch at the rear of the machine holds the cable 31 oriented in the longitudinal direction of the machine 1 to allow a correct winding of the cable 31 around the drum 32.
• the height arrangement of the drum 32 of the winch also increases the length guiding the cable 31 and reduce the risk of clogging of the winch.
• the drum 32 is carried by a support structure 23, formed by two uprights and a cross member, integral with the frame 2 of the machine.
• the anchor ballast is formed of a body equipped with metal points planted in the ground towards the machine to serve as anchoring points of the ballast.
• the ballast is positioned using an excavator inside the ditch, or outside the ditch, to facilitate the movement of the machine in a ditch curve.
• the cable length is several tens of meters, for example 30 m.
• the anchor weights are moved every 30m to continuously pour and smooth the concrete in the ditch.
• the hopper 4 serves to deposit the concrete in the ditch during the advance of the machine.
• Said hopper 4 is open in its upper part to receive the concrete which descends and evacuates by gravity when the machine moves inside the ditch.
• the concrete escapes from the hopper towards the flanks of the ditch and under the formwork, that is to say in the bottom of the ditch.
• the machine comprises vibrating means formed of vibrating elements (not shown), such as vibrating needles placed in said hopper.
• the hopper is also equipped with two external hydraulic vibrators (not shown) to regulate the descent of the concrete.
• the machine comprises support means 7 sliding on the bottom of the ditch, in the manner of a ski.
• the support means 7, also called shoe have a vertical translational mobility TR1 (see Figure 7).
• the shoe also has a pivoting mobility PIV1 around a vertical axis V1 to allow the machine to follow the ditch curves.
• Said shoe further comprises pivoting mobility PIV2 about a horizontal axis H1, transverse to the longitudinal direction of the machine, so as to allow the machine to follow the slope variations of the bottom of the ditch.
• Said shoe comprises in the upper part a light 72 for the passage of the cable along the machine to the drum 32 of the winch.
• the vertical displacement of the shoe 7 is controlled by a cylinder 71.
• Such vertical movement of the shoe makes it possible to adapt the height of said shoe and thus that of the formwork as a function of the variations in the depth of the ditch.
• the higher the hoof the greater the thickness of the concrete layer spread in the ditch, the hoof notably making it possible to compensate for earthwork defects (embossed bottom, for example).
• the combination of the wings 8 and the shoe 7 makes it possible to control both the dimensions of the concrete ditch and the thicknesses at the bottom of the ditch, in particular according to the imperfections of the earthwork encountered.
• Such a machine is particularly useful for concreting ditches dug in the earth, the height of the flanks varies significantly.
• the shoe is also equipped with means 6 for receiving laser beams, such as a sensor.
• Said laser sensor receives rays emitted by a laser emission device (not shown) remote from said machine.
• Said laser emission device preferably a rotating laser, provides said machine with a height reference system.
• the laser sensor 6 makes it possible to detect the horizontal orientation of the machine and the level of the machine relative to the bottom of the ditch.
• Said sensor 6 is associated with a control unit, for example an electronic card, for controlling the jack 71 controlling the displacement of the support means 7 as a function of the position of the laser beams received with respect to the position of said support means .
• the control means are designed to actuate the cylinder 71 when the soil level varies in order to keep the machine and the formwork the desired level. This avoids the formation in the concreted ditch bowl in which the water may stagnate.
• control means also make it possible to control the rotational mobility PIV1 around the vertical axis V1 to enable the machine to follow the curves of the ditch.
• the formwork 5 has lateral walls 52, 53 inclined relative to each other. the other and forming in cross section the opposite sides of the trapezium. Said side walls are intended to come opposite the flanks of the ditch.
• the formwork 5 comprises a bottom formed by a floor 51 of generally rectangular shape. Said sidewalls 52, 53 of the formwork are able to take at least two different inclination positions to allow with the same machine to concret ditches whose sides have different inclinations from one ditch to another.
• Each side wall 52, 53 and the corresponding longitudinal edge of the floor 51 comprise a row of tubes 55, 56 aligned and spaced apart. axially from each other.
• the row of tubes 55 of each side wall 52, 53 is intended to be aligned and crisscrossed with the row of tubes 56 of the corresponding longitudinal edge of the floor 51.
• Axes 57 are then introduced into the pairs of tubes 55, 56 to bind in pairs. rotating each side wall 52, 53 and the corresponding longitudinal edge of the floor 51.
• each longitudinal edge of the floor 51 is equipped with scraping means 58 for scraping the edge of the lateral wall 52, 53 of the formwork hinged to the longitudinal edge of the floor 51.
• Said scraping means are formed in the the example illustrated in the figures, by a scraper blade housed in the thickness of the floor along each of the longitudinal edges of the floor 51, which makes it possible to seal the formwork, with respect to the concrete, at the level of the connections articulation between the longitudinal edges of the floor 51 and the side walls 52, 53 of the formwork 5.
• the articulation of the side walls of the formwork is achieved by means of two sets of articulated arms 91, 92.
• a set of articulated arms 91 is disposed near the front part of the formwork 5 and the other set of articulated arms 92 is disposed near the rear portion of said formwork 5.
• Each set of articulated arms 91, 92 is connected to the two side walls of the formwork to enable the inclination position of said side walls 52, 53 to be varied.
• Two jacks 54 are respectively associated with the two sets of articulated arms 91, 92 for unfold and fold them.
• an arm articulated to a side wall 52 is connected to an articulated arm to the other side wall 53 of the formwork by a link rod itself articulated so as to allow simultaneous deployment or folding of the two opposite side walls 52, 53 in the desired position.
• the articulated arms connected to the opposite side walls are slightly offset relative to each other in the longitudinal direction of the machine to allow the arms to cross when they are folded in the transport position.
• Such a design of the articulated arm assemblies 91, 92 allows for overlap folding of the arms.
• each longitudinal bar 95, 96 spaced from the bottom of the formwork. Said longitudinal bars 95, 96 are parallel to each other and parallel to the floor of the formwork. Each longitudinal bar 95, 96 is adapted to cooperate with a structure 93, 94, said locking in position, equipping each articulated arm of a set of articulated arms 93, 94. Said structure 93, 94 has a latching arch form circle and extends in a plane transverse to the longitudinal axis of the machine. Each locking structure
• each set of articulated arms 91, 92 is provided with notches 93A, 93B, 93C, respectively 94A, 94B, 94C, in which are intended to be engaged the longitudinal bars 95, 96 corresponding.
• the notches of the locking structures 93, 94 define in cooperation with the longitudinal bars 95, 96 locking positions of the arm assemblies 91, 92 and thus the locking positions of the side walls 52, 53. Indeed, when the longitudinal bars 95, 96 are engaged in the notches of the locking structures 93, 94, the side walls 52, 53 of the formwork are locked in the corresponding position.
• each locking structure 93, 94 is provided with three notches 93A, 93B, 93C respectively 94A, 94B, 94C.
• the notches 93A, 94A furthest from the median longitudinal axis of the machine correspond to a so-called transport position. In this transport position, the arms are folded to the maximum so that the side walls are close to each other, thus limiting the size of the machine to allow its transport from one point to another.
• the notches 93C, 94C closest to the median longitudinal axis of the machine correspond to an extended position of the side walls 52, 53 of the formwork 5 for the realization of a concrete ditch whose concrete sides form an angle of 33 ° with the bottom of the ditch.
• Intermediate notches 93B, 94B correspond to a semi-extended position of the side walls 52, 53 of the formwork for the realization of a concrete ditch whose concrete sides form an angle of 45 ° with the horizontal.
• control means in vertical displacement of the longitudinal bars 95, 96 to allow said sets of articulated arms 91, 92 to be released or to engage said bars 95, 96 in the notches of the locking structures 93, 94 of said sets of articulated arms 91, 92.
• the frame 2 comprises mainly two longitudinal members 21, 22.
• the front portion 27 of the two longitudinal members 21, 22 serves to support the sliding support means 7 of the machine.
• the next portion 24 of the side members carries in cooperation with an amount 240, the fixed portion 40 of the hopper, as detailed below.
• the following portion 25 of the longitudinal members 21, 22 which extends to the rear of the frame 2 forms a support for fixing the floor 51 of the formwork.
• the rear end of the longitudinal members also serves as support for the supporting structure 23 of the drum 32 of the winch.
• the hopper 4 comprises a fixed central portion 40 secured to the longitudinal members 21, 22 and an amount 240 of the frame 2.
• This fixed central portion 40 is formed of two panels 40A, 40B transverse to the longitudinal members 21, 22 and kept apart.
• the fixed portion 40 of the hopper is open on top and towards the bottom of the ditch.
• the feed hopper 4 comprises lateral portions 41, 42 which are movably mounted transversely to the longitudinal direction of the machine.
• Each side portion 41, 42 is formed of two panels 41A, 41B, 42A, 42B, transverse to the longitudinal direction of the machine, kept spaced at the top by a wall 41C, 42C of substantially vertical connection.
• Said lateral portions 41, 42 are also open on the top and towards the bottom of the ditch.
• Each connecting wall 41 C, 42C connecting only the upper part of the transverse panels 41A, 41B, 42A, 42B, the side portions 41, 42 of the hopper are partially open towards the flanks of the ditch.
• the mobility of said lateral portions 41, 42 makes it possible to vary the geometry of the feed hopper 4 as a function of the inclination of the lateral walls 52, 53 of the formwork to ensure good distribution of the concrete, deposited by the feed hopper. 4, between the flanks of the ditch and the side walls 52, 53 of the formwork.
• transverse panels 41A, 41B, 42A, 42B of the lateral portions overlap with the transverse panels 40A, 40B of the fixed central portion 40 of the hopper.
• transverse panels 41A, 41B, 42A, 42B of the lateral portions partially cover the transverse panels 40A, 40B of the fixed central portion 40 of the hopper 4. It is provided with means of application 43 of a pressure force on each transverse panel 41A, 41B, 42A, 42B of a lateral portion 41, 42 towards the transverse panel 40A, 40B corresponding to the fixed central portion 40 of the hopper for sealing between these panels.
• each application means 43 of a pressure force mainly comprises a cam, forming a pressure element, movable by means of a crank to come into pressure against a transverse panel of a lateral part of the hopper .
• the pressing elements formed by the cams thus function in the manner of a clamp.
• the lateral portions 41, 42 are brought closer to or separated from the central portion 40, by means of a set of arms 44 articulated to said lateral parts 41, 42.
• the articulated arms of said assembly 44 are deployed or folded using an actuating cylinder 45.
• the machine further comprises guide means 12 of the concrete deposited by the feed hopper 4 towards the rear of the machine, called cheeks, to prevent the concrete from spreading towards the front of the machine.
• Said cheeks 12 are preferably formed by flexible plates, for example rubber.
• Said cheeks 12 are arranged facing and on at least a portion of the height of the side portions 41, 42 of the feed hopper 4. Said cheeks are applied against the flanks of the ditch.
• remote control means for example using a remote control, advance means 3 of the machine.
• the remote control can control the motor 10 of the winch to vary the winding speed of the cable 31 around the drum 32 of the winch.
• the remote control is also designed to communicate with means for controlling the pivoting of the shoe around the vertical axis V1 in order to allow the machine to follow the curves of the ditch.
• the machine can be controlled by one person, who is not necessarily present on the machine.
• each side wall 52, 53 of the formwork is equipped with forming means 8, called wings, by smoothing the upper part of the concrete layer spread over the corresponding side of the ditch facing said side wall 52, 53 of the formwork.
• Said forming means 8 equipping each side wall 52, 53 of the formwork 5 are formed by a bar of triangular section.
• Said triangular bar comprises at least two longitudinal faces 83, 84, said to be useful, capable of selectively smoothing the upper part of said concrete layer.
• Each of the longitudinal faces 83, 84 is substantially flat.
• the corresponding shaping means 8 extend between said side wall 52, 53 of the formwork 5 and the flank of the corresponding ditch.
• the angle between said useful longitudinal faces 83, 84 of the same triangular bar 8 is chosen so that, for each of said inclination positions of the corresponding lateral wall 52, 53 of the formwork, the triangular bar 8 is capable of being oriented so that one of the longitudinal faces 83, 84 useful form with the floor 51 of the formwork substantially the same angle of a tilted position to another of said side wall 52, 53. Said angle is preferably substantially no such that said useful face is substantially parallel to the floor of the formwork.
• the machine comprises adjustment means 81, 82 in height of each of said forming means 8 with respect to the corresponding side wall 52, 53.
• connecting piece 86 offset from the longitudinal axis of the triangular bar 8 to bypass the corresponding lateral portion 41, 42 of the hopper 4 in order to attach each triangular bar 8 to its height-moving means 81, 82. Said connecting piece 86 also guides the machine in the ditch by bearing against the flanks of the ditch.
• the adjustment means 81, 82 in height are formed for each triangular bar 8 of two sets of adjustment arranged, one at the rear of the machine and integral with the corresponding side wall 52, 53 of the formwork 5, and the other at the front of the machine and secured to the corresponding lateral part 41, 42 mobile of the hopper 4.
• Each set of adjustment is formed of a guide rail transverse to the longitudinal direction of the machine and a crank.
• the triangular bar 8 is movably mounted along said guide rail by means of the corresponding crank.
• Removable plate plates 87 are provided for, on the one hand, allowing a change of height of each triangular bar 8 and, on the other hand, closing the space left free forwards between the machine 1 and the side of the ditch.
• the operating members of the machine such as the motor 10, the winch, the cylinders, the oil tanks, is disposed vertically and / or inside the formwork 5.
• the operating members constitute means for weighting the formwork 5, which enables said formwork 5 to exert a pressure force on the concrete layer applied to the bottom and flanks of the ditch during the displacement of the machine 1.
• a part of the heavy body of the machine lying between the shoe and the back of the machine the center of gravity of the machine is shifted backwards.
• Such a distribution of the weight of the machine allows the formwork to apply a pressure force on the concrete deposited by the hopper during the movement of the machine.
• the weighting of the formwork makes it possible to compress the deposited concrete, to smooth it, and to facilitate the advance of the machine which slides on the freshly deposited concrete.
• ballasting the formwork not only makes it possible to exert a pressure force on the concrete to favor its distribution and its application inside the ditch but also to limit the lifting of the formwork by the concrete accumulating under the latter.
• the weighting of the formwork thus makes it possible to maintain a regular level of concrete applied on the bottom of the ditch.
• the length of the machine is reduced, which makes it possible to follow the ditch curves correctly and more easily.
• the reduced size of such a compact machine also facilitates its transport.
• Such a machine makes it possible to realize more than 500 m of ditch in a single working day.
• cowling flap located in the upper part of the formwork, for the protection of the drive equipment and sets of articulated arms located inside the formwork.

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• Engineering & Computer Science (AREA)
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• Structural Engineering (AREA)
• Architecture (AREA)
• Environmental & Geological Engineering (AREA)
• Ocean & Marine Engineering (AREA)
• Mechanical Engineering (AREA)
• On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
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• Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
• Underground Or Underwater Handling Of Building Materials (AREA)

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• 2008
  • 2008-09-22 FR FR0805190A patent/FR2936260B1/fr not_active Expired - Fee Related
• 2009
  • 2009-09-17 WO PCT/FR2009/051748 patent/WO2010031966A2/fr active Application Filing
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• 2015
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