FR2538016A1 - MIXED MOTOR VEHICLE, IN PARTICULAR A LIGHTWEIGHT TRUCK EXCAVATOR FAST INTERVENTION TRUCK - Google Patents

Abstract

1. A light lorry equipped with an excavator for rapid deployment, of a type comprising a chassis (3) carrying a free horizontal rear platform (9), an excavator (2) mounted on a turret (10) which can be rotated by 360 degrees relative to the chassis (3) and comprising a boom (11, 12, 13) carrying and operating a bucket (14), said excavator (2) being movable between a working position in which it is extended towards the rear of the lorry (1) and overhangs the latter, and a rest position in which it is folded up towards the front of the lorry, characterised in that the boom is formed by at least three arms (11, 12, 13) articulated on one another, in that the turret is drop mounted in an intermediate chassis (28) fixed to the main chassis (3) of the lorry and in that, of two of the three articulated arms (13, 11) of short reach and situated at the ends of the boom (2), one is connected to the bucket (14) and the other to the turret (10), whereas the intermediate arm (12) is of greater length corresponding approximately to the length of the platform (9) of the lorry (1), the arms (11, 12, 13) and the bucket (14) being able to pivot with respect to one another under the action of four double-action jacks (15, 17, 18, 19), which arms, when the boom is in the folded-up position, take up reciprocal positions defining an isosceles triangle with its point towards the bottom and whose base, formed by the intermediate arm (12), is slightly inclined with respect to the horizontal at a level corresponding to the height of the roof of the cabin (5) of the lorry (1).

Description

"Mixed motor vehicle, in particular light-duty truck for rapid intervention

excavator excavator "

  The invention relates to a motor vehicle

  te, in particular a light-duty fast-action truck of the type comprising a chassis carrying an unshielded rear horizon-shaped platform, an excavator mounted rotatably at the rear of the platform in the chassis of the vehicle and consisting of an arrow carrying and maneuvering a bucket, said shovel being movable between a working position deployed cantilevered with respect to

  vehicle and a folded position at rest on the latter.

  In the field of earthmovers of all kinds, loading, trenching and other excavations, we know for example effective materials such as

  excavators and excavators known as

  under the name of retro shovels.

  These self-propelled machines include a general one

  chassis carried by four wheels driven by an engine used equal.

  To maneuver the boom of the shovel, provided with the bucket, and carrying a cabin arranged on the major part of the chassis and forming cockpit driving lengino I In this type of gear, the arrow is generally composed of two arms connected between them and the bucket by joints,

  actuators ensuring their actuation between working positions.

  in which the arms of the boom are deployed in the door, at a distance, and an almost vertical folded position, in which

  both arms are folded vertically towards each other,

be the vehicle.

  But, although this machine is convenient and efficient

  this, its size is important, laterally but especially in

  height, in addition to the fact that such a machine can not be used specifically

  However, in such a vehicle, the excavator can only turn at a limited angle.

of the order of 180.

  These characteristics make it a machine for

  earth moving, of considerable size, and in particular,

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  this fact, intransportable / by airplane for example.

  This is why the invention aims to create

  a mixed motor vehicle, namely a light truck

  fast excavator excavator which is air-transportable and therefore has minimized dimensions (when the excavator is in the retracted state in the rest position), while having a radius or a maximum working range when the excavator is deployed;

  such a vehicle that can be used in particular for

  such as earthworks for trenches for

  units of contact, its speed to enable it to

  perform a great deal of engineering work: maintenance, creation of

  the mines, clearing, earthmoving, brush clearing, etc. This problem is solved according to the invention using a mixed vehicle of the type indicated above, characterized

  in that the shovel is mounted on a lowered turret with rota-

  total 360 on the chassis, and that the arrow is

  formed of several articulated arms to each other, the assembly can

  to be either deployed in operative position or retracted over the platform in the median axial plane of the vehicle

  to occupy on this platform a space corresponding approximately

  the overall height of the vehicle and the overall length of the platform of the latter, this withdrawal being achieved

  by the time of the Ulatern and the rotation of the

Relle.

  Thus, we see that obtaining minimum overall dimensions in this vehicle is based on the combination

  a low turret excavator with respect to the chassis of the vehicle

  (height limitation) of an unobstructed platform around the

  turret for the storage of the shovel, a total rotation pos-

  sible of the latter and the realization of the arrow of the shovel with several articulated arms that can be retracted on

said platform.

  According to an advantageous characteristic of the in-

  3 b vention, the boom consists of three arms articulated between them - '3' 155 O Ao, two of which are of short range, located at the ends of the boom

  are connected to the bucket bucket and the other to the turret,

  say that the intermediate arm is of greater length cor-

  approximately corresponding to the length of the platform of the vehicle and that the arms and the bucket are able to pivot relative to each other, under the action of four cylinders-double effect, said arm taking, when the arrow is at the retracted state of the reciprocal positions delimiting an isosceles triangle, oriented downwardly and whose side of the base formed by the arm, is slightly inclined with respect to the horizontal at one level

  corresponding to the ceiling height of the vehicle cab.

  According to a preferred embodiment, the different arms consist of two parallel flat bars in

  isosceles triangle of low height, connected transversely

  particularly by welding, by tubular members

  toises, one of which also serves as a fixing member for the working ram of the bucket operating arm and the other serving as an orga:

  fixing the actuating cylinder of the intermediate arm.

  Other features and benefits of the inv

  from the description given below of an example

  embodiment, taken with reference to the accompanying drawings, on which

  The figo is a perspective view of the vehicle

  FIG. 2 is a diagrammatic side elevational view of the vehicle of FIG. 1, FIG. 3 formed of FIGS. 3A and 3B shows two rear views of the vehicle, one of which, 3A. , essentially represents the working position in which lateral outriggers are deployed and rest on the ground, and the other, 3 B, is the case of the rest position in which the lateral outriggers are raised and the vehicle is installed in an airplane, for the purpose of air transport, and, Fig. 4 is a schematic view of the rear of the vehicle and the excavator in action, showing the work area

d-c this last.

  In FIG. 1, a view in FIG.

  schematic perspective of the vehicle consisting of a light truck 1

  and an excavator, or backhoe 2.

  The truck 1 comprises a chassis 3 mounted on four wheels 4 and carrying a cabin 5, a motor 6 arranged at the front, a hydraulic tank 7, a spare wheel 8 and a platform

back 9.

  Excavator 2, shown in the expanded state of

  Vail in this figure, consists essentially of a turret 10 rotatable on an angle of 360, on a non-visible support mounted in the chassis 3 of the vehicle, an arrow formed of three arms 11, 12, 13 articulated between They, and a bucket 14 The arm 11 can be raised or folded by jacks 15 attached to the uprights

  16 of the turret, while 17,18,19 jacks allow

  i 5 attempt to maneuver the corresponding arms 12,13 and the shovel 14.

  In addition, a workstation 20 is arranged laterally on the platform 9 of the vehicle next to the turret of the excavator 2, and includes all the commands of the different

  cylinders and a hydraulic motor not visible in this figure -

  the rotation of the turret.

  Furthermore, in FIG. 1, it can be seen that the vehicle is equipped with four lateral stabilizers 21 each formed with a stand 22 articulated on the frame 3 and whose base

  is provided with a support patient 23 also Jellel on the stand.

  FIG. 2 shows a schematic side elevation view of the entire vehicle 1 and the excavator 2 in the state

  folded or retracted (rest position) on the platform 9 of the

  vehicle. As indicated below in more detail, the three-armed boom 11, 12, 13 of the excavator 2 can be retracted at

  above the platform to occupy a corresponding space -appro-

  approximately to the overall height of the vehicle and to the length

  overall of the latter's platform.

  In more detail, the boom 2 is composed of three arms, 11, 12, 13, articulated together in axes 22, 23 and - two of which 13 and 11, of short range, located at the ends of the boom are connected, , one 13 to the bucket 14 of the excavator, and the other 11, i to the uprights 16 of the turret 10, while the intermediate arm 12 is of greater length corresponding approximately to the length of the platform 9 of the vehicle. The arms 11, 12, 13 and the bucket 14 can pivot relative to one another under the action of the four double-acting cylinders mentioned above, 15, 17, 18, 19, and take off when the boom 2 is at the same time. folded state and brought back by rotation in the median plane

  of the vehicle and over the platform of reciprocal positions

  approximately delimiting an isosceles triangle, oriented

  bottom and whose side of the base (arm 12) is weakly

  clinch 6 relative to the horizontal at a level corresponding to the

  ceiling height of cab 5 of vehicle 1.

  As is also visible in FIGS. 1 and 2, the various arms 11, 12, 13 are made up, for example

  the arm 12, by two parallel flat bars 23 in the form of

  isosceles angle of low height, connected transversely O in particular by welding, by tubular members forming spacers 24, one of which also serves as a fastener to the working jack 18 of the arm 13 of the bucket maneuver, and the other serves as an organ

  fixing cylinder 17 for actuating the intermediate arm.

  As can be seen in FIG. 2, the turret 10 is fixed to a geared-up ring 25 of a type alternq alets, in engagement with a pinion 26 secured to the axis of a hydraulic drive motor 27 housed in lowered position in the chassis 3 of the

  vehicle and within an intermediate chassis 28 supporting

  both the crown 25 and the turret 10, and fixed by bolting in

the chassis 3 -

  As seen on the side elevation view

  In Fig 2, workstation 20 is partially hidden

by the turret 10.

  A pump 29 connected to the hydraulic reservoir 7 has also been shown very schematically, said pump being also connected to a power take-off, not shown, on the

around the vehicle -

2538016.

  Moreover, the hydraulic motor 27 and the various cylinders 15, 17, 18, 19 are connected to a conventional hydraulic system, not shown, including the pump 28 and the reservoir 7 as well as a distributor supplying the hydraulic motor. 26 and the cylinders. As can be seen in FIGS. 2 and 3, the vehicle is provided with side stabilizers 21 formed of crutches.

  22 of triangular shape, equipped with rectangular skates ar-

  21 and which are pivotally mounted on a transverse post

  sal 30 of the vehicle chassis Each stabilizer is mounted

  on an axis 31 such as in the raised or rest state (FIG.

  3 B), said crutches 22 are arranged vertically in

  space corresponds to the overall limits of the vehicle 1.

  These crutches 22 are actuated by jacks 32, whose body is integral with the upright 30 and whose rod is articulated at a point 33 offset from the pivot axis.

said crutches.

  It will be noted that the stabilizers have the effect of increasing the earth-moving performance, which otherwise can be reduced by the light weight of the vehicle, and the stand 22 can moreover be deliberately locked in the semi- or

  green or retracted, if the terrain configuration requires it.

  In FIGS. 2 and 3 B, it can be seen that, once the stand 22 has been raised, the shoe 23 assumes a vertical position flat.

against the soul of the crutch.

  Figure 3B shows this state in which the vehicle

  1 equipped with the shovel 2 is transported in an airplane, spotted by

its inner shell 34.

  Naturally, the cylinders 31 are connected in a

  classic to the entire hydraulic system of the vehicle.

  The arrangement of the workstation 20 next to the turret 10 on the platform 9 of the vehicle groups all

  controls and allows excellent visibility of the site.

  FIG. 4 shows, at the rear of the vehicle 1, stabilized on a floor 35, the zone of vertical evolution 25380 X 6 of the excavator 2, which is capable of digging excavations having stroke

the contour 36.

  Of course the shovel 2 can have a total rotation (360) j it can perform work all around the vehicle and thus have a very important working radius, which reduces the time usually due to displacement:

  vehicle when digging large cavities.

  The operation of the assembly is the following Once arrived at the site, the driver of the hicle 1 puts in the required position the lateral stabilizers 21, then maneuvers the shovel 2 in a conventional manner using the jacks

, 17,18,19.

  Once the excavation has been completed, it retracts (or folds) the arrow formed by the arms and the bucket into the position cc corresponding to FIG. 2, (the arms being articulated together at 22 23 (see FIG. , they occupy an inverted triangle-shaped space), but still in a pox position overhang at the rear or side of the vehicle, then it rotates the turret to the desired angle to bring the entire arrow

  in the vertical median plane below the platform.

r, 82538016

Claims (6)

  (1) Mixed motor vehicle, in particular   light weight rapid action truck with a chassis (3)   carrying a clear horizontal rear deck (9 y, one pel-   the excavator (2) rotatably mounted at the rear of the platform in the chassis of the vehicle and consisting of an arrow (11,12,13) carrying and operating a bucket (14), said excavator being movable between a working position deployed cantilevered relative to the vehicle (1) and a folded position at rest on the latter, characterized in that the shovel (2) is mounted on a turret (10) lowered to a total rotation of 360 relative to the frame (3), and that the boom (11, 12, 13) is formed of several arms articulated to each other, the assembly can thus either be deployed in operative position or retracted over the platform in the median axial plane of the vehicle (1) for   occupy on this platform (9) a space corresponding approximately   the overall height of the vehicle and the overall length of the platform of the latter, this withdrawal being achieved   by the combination of the joints and the rotation of the Relle.   Vehicle according to claim 1, characterized   rised in that the boom (11, 12, 13) consists of three arms   two of them (13,11), of short reach located at the ends of the boom (2) are connected one to the bucket bucket (14) and the other to the turret (10) while the arm intermediate (12) is of greater length corresponding approximately to the length of the platform (9) of the vehicle (1) and that the arms (11, 12,13) and the bucket (14) are rotatable relative to each other under the action of four double-acting cylinders (15, 17, 18, 19), said arms taking up, when the boom is in the folded state,   reciprocal positions delimiting an isosceles triangle, oriented   point downwards and whose side of the base formed by the arm (12)   is slightly inclined to the horizontal at a correct level   corresponding to the ceiling height of the cab (5) of the vehicle. 9 -   3) Vehicle according to claims 1 and 2,   its in their entirety 2 characterized in that the different arms (11, 12,13) are constituted by two parallel flat bars (23)   isosceles triangle of low height, connected transversely   salted, especially by welding, by tubular spacers (24), one of which also serves as a fastening member to the working ram (18) of the arm (13) of maneuvering the bucket-614) and the other serves as a fastening member of the jack (17) for actuating the intermediate arm (12).   4) Vehicle according to any of the claims   cations 1 to 3, characterized in that the turret (10) is fixed on   an intermediate frame (27) bolted in the frame (3) of the vehicle   cule (1) and carries a lower crown (25), of the pebble type   alternating, engaged with a pinion (26) secured to the axis of a motor   hydraulic drive unit (27) housed in the lowered state at the in-   the middle chassis (28) and chassis (3) of the vehicle.    Vehicle according to any one of claims 1 to 4, characterized in that it comprises a work station (20) disposed on the platform (9) of the vehicle (1) laterally adjacent to the turret ( 10) of the shovel (2) and includes all the manual controls of the various cylinders (15,17,18,19) and the engine hydraulic (27).   6) Vehicle according to any one of the   cations 1 to 5, characterized in that it comprises lateral stabilizers (21) in the form of crutches (22) with articulated shoes (23) which are pivotally mounted on transverse uprights (30) of the chassis (3) of the vehicle, at a point (31) such that in the raised state of rest, said stands (22) are arranged vertically within the space corresponding to the outer limits of the   vehicle (1), and that they are maneuvered by hydraulic cylinders   (32) whose body is integral with the upright (30) of the frame and whose rod is hinged at a point (33) offset relative to   to the axis (31) of pivoting of the legs on said uprights (30).   7) Vehicle according to claims 1 to 6,   taken as a whole, characterized in that the hy- 2538,016   lique (27) and the various cylinders (15,17,18,19,32) are connected to a hydraulic system including a hydraulic reservoir (7),   a pump (29) driven by a PTO on the engine {6} of the vehicle;   cule (1) and a distributor supplying the hydraulic motor and said cylinders.