FR2757100A1 - BETONNIERE GERBABLE - Google Patents

Abstract

Concrete mixer (1) provided with at least one wheel (11, 12) allowing its movement, characterized in that said wheel belongs to a rolling structure (7) suitable for being mounted on the frame (2) of said concrete mixer in two positions, one of said positions corresponding to the use of the concrete mixer while the other position corresponds to its stacking, its storage and / or its transport, said wheel being usable to move said concrete mixer in the two said positions of said rolling structure. The concrete mixer according to the invention can be stacked and moved easily, on its wheel or wheels, in a compact configuration.

Description

The invention relates to a concrete mixer. A concrete mixer is used to

  the mixture of the different constituents of a concrete, such as water, sand, cement, gravel, etc. In its configuration of use, a concrete mixer occupies a large volume, in particular because of its own volume its tank and that the tank must be located at a height sufficient to allow the pouring of the mixed concrete in a receptacle such as a seal or a wheelbarrow. Moreover, when it is necessary to transport or store a concrete mixer, it is known to disassemble partially to reduce its overall volume. For example, there are commercially available cement mixers packed for sale

in a specialized store.

  However, a concrete mixer is a heavy object, so that its packaging must have good mechanical strength properties and that the cost of this packaging can be significant and up to 10% of the total cost of the concrete mixer, which strike the overall economic performance of the concrete mixer. In addition, a cement mixer packaged, for example in a carton, is a heavy and bulky object that a buyer or a user must transport by wearing, for example to the trunk of his motor vehicle. This

is a difficult task.

  On the other hand, some concrete mixers are known as

  can be stacked in their configuration of use.

  However, these concrete mixers can only be stacked in columns of two units, otherwise they will form columns

  high and unstable, and therefore impossible to

  to be installed in a conventional high ceiling public place, such as a sales area, or in a

transport container.

  It is these problems that the invention intends to remedy more particularly by proposing a stackable concrete mixer in a compact position and which can be transported to its storage position by using the wheels which are, moreover, conventionally provided for displacement. concrete mixer in its configuration of use. Another object of the invention is to provide a concrete mixer that can be stacked compactly, so that columns of four concrete mixers can be installed in a container of

  standard dimensions and / or at a point of sale.

  In this spirit, the invention relates to a concrete mixer

  provided with at least one wheel enabling it to be moved,

  in that said wheel belongs to a rolling structure adapted to be mounted on the frame of said concrete mixer in two positions, one of said positions corresponding to the use of the mixer while the other position corresponds to its stacking, storage and / or transport, said wheel being used to move the concrete mixer in

  the two positions of the rolling structure.

  Thanks to the invention, a concrete mixer in a compact position

  may be handled by a purchaser or user

  for example until the exit of the place of sale, or even on

  the parking lot of it, towards the vehicle of the buyer.

  In addition, in this compact position, the concrete mixer can be directly installed in the trunk of a motor vehicle

  without the need for additional assembly or disassembly.

  According to a first advantageous aspect of the invention, the chassis is provided with two fixing zones of the rolling structure, this rolling structure being displaceable in vertical translation to selectively cooperate with each attachment zone. This aspect of the invention thus makes it possible

  reduce the height of the concrete mixer without modifying fundamental-

  the orientation of the wheel or wheels thereof relative to the ground, so that the wheel or wheels remains capable of fulfilling its rolling function or functions, including

  position of stacking, storage or transport of concrete-

  Niere. According to another advantageous aspect of the invention, the rolling structure comprises two legs joined by an axle shaft for a pair of wheels, these legs being provided, in their respective upper parts, with removable attachment means to said frame. This configuration of the rolling structure is particularly simple and allows

  to usefully resume the weight efforts of the concrete mixer.

  According to another advantageous aspect of the invention, the mixer comprises a support lug of the axle shaft of an identical concrete mixer stacked on the concrete mixer, this support lug being supported on a sleeve surrounding the transmission shaft of the movement of a motor to a

  drive pinion in rotation of the tank of the concrete mixer.

  Thanks to this aspect of the invention, the stacking of several

  identical mixers is easy and the weight of the concrete-

  the upper bracket is taken up by the support bracket and possibly transmitted to the sleeve of the lower concrete mixer, this sleeve being particularly robust and able to withstand

such an effort.

  In this case, it is advantageous that the tab carries means for immobilizing the shaft of the upper concrete mixer. This makes it possible to confer good stability on a column formed of several cement mixers stacked on each other.

others.

  According to another particularly advantageous aspect of the invention, and in the case of a mixer comprising a tilting wheel of the mixing tank, the steering wheel is fixed on a flexible blade and carries an extension capable of selectively penetrating into radial notches a fixed disc relative to the frame of the mixer, this extension can be extracted from the notches, to allow the operation of the steering wheel, bending the flexible blade. This aspect of the invention makes it possible to obtain the degree of freedom required for the tilting maneuver of the tank by acting on the flexion

  of a blade, for example metal, which is of a construction

reliable and inexpensive.

  According to another advantageous aspect of the invention, the extension

  The steering wheel comprises a stop capable of cooperating with one end of the flexible blade in order to limit the bending of the blade. This stop is therefore a limit stop which avoids, in particular, to exert on the flexible blade too much effort that could result in a plastic deformation

of it.

  According to another advantageous aspect of the invention, the flexible blade is provided with a notch in which the extension of the flywheel is movable, the displacement of the extension in the notch being limited by the abutment mentioned above. This construction makes it possible to realize in a simple way the means of

abutment previously described.

  According to another advantageous aspect of the invention, the concrete mixer comprises a telescopic leg adapted to be immobilized with respect to the chassis of the mixer in two positions corresponding to the two positions of said rolling structure. Thanks to this aspect of the invention, the concrete mixer therefore permanently comprises at least two points of support him

  conferring a substantially flat position, which is essen-

  on the one hand for a good stability when the concrete mixer is used, and on the other hand for a good stability when several concrete mixers have to be stacked one on the other.

other.

  In this case, and according to another advantageous aspect of the invention, the telescopic foot comprises a soleplate capable of being fixed to the frame of an identical concrete mixer placed under the concrete mixer. This sole therefore allows the relative immobilization of two stacked mixers, which contributes to a good stabilization of a stack or column formed of several concrete mixers. The invention will be better understood and other advantages thereof will appear more clearly in the light of the

  following description of an embodiment of a

  concrete mixer according to its principle, given only by way of example and with reference to the accompanying drawings in which: - Figure 1 is a perspective view of a concrete mixer according to the invention in use position; - Figure 2 is an exploded perspective view of the concrete mixer of Figure 1 in a configuration for stacking; Figure 3 is a schematic representation of four concrete mixers according to the invention stacked to form a column; - Figure 4 is a perspective view of a detail of two concrete mixers according to the invention stacked at the upper part of a drive motor, the tank is not shown; - Figure 5 is a perspective view of detail of a portion of two cement mixers according to the invention stacked at an upper portion of the frame of the lower concrete mixer; FIG. 6 is a vertical section of the upper part comprising the steering wheel of the concrete mixer of FIG. 1 while the steering wheel is in a first position and FIG. 7 is a view similar to FIG.

  while the steering wheel is in a second position.

  The concrete mixer 1 shown in FIG. 1 essentially comprises a frame 2, formed of metal tubes, on which is articulated a cradle 3 supporting a tank 4. On the tank 4 is removably mounted a shell 5 constituting the terminal or upper part of the tank 4. In a manner known per se, the tank is provided on its outer periphery with a rack adapted to cooperate with a pinion 6, visible in Figure 4 and mounted on the output shaft of a motor housed in

a cover 6a.

  According to the invention, the mixer is provided with a rolling structure 7 consisting of two legs 8 and 9 formed by U-shaped angles and joined by a shaft 10 forming an axle for a pair of wheels 11 and 12. rolling 7 is intended to be mounted on the chassis 2 at

  two bolts 13 and 14. As it appears more clearly

  In FIG. 2, the frame 1 comprises two fixing zones of the rolling structure 7, these attachment zones being each represented by two receiving holes of the bolts 13 and 14. A first zone A comprises two holes 23 and 24 then that the second zone B includes two other holes

33 and 34.

  Furthermore, the frame 2 receives a telescopic leg 15 slidable inside one of the tubes forming the frame 2 and can be immobilized relative thereto by two bolts 16 and 17 may penetrate at once in one of two holes 26 and 27 of the frame 2 and in end holes 15a and 15b of the foot 15. As shown in Figure 1, in its position of use, the concrete mixer is mounted so that the bolts 13 and 14 are respectively inserted in an orifice 8a of the leg 8, in the bore 13 and in an orifice 9a of the leg 9, and in an orifice 8b of the leg 8, in the bore 14 and in a

  9b of the leg 9. In the same way, the telescopic foot

  15 is immobilized in the extended position, the bolts 16 and

  17 through the orifices 15a and 15b.

  It is conceivable that when it is necessary to store or transport the concrete mixer of the invention, it is appropriate to reduce its volume. To do this, the shell 5 is disassembled relative to the tank 4 and returned to be placed in the position corresponding to that of Figure 2 inside the tank 4. In addition, a steering wheel 19 whose fixing on the concrete mixer will be explained in more detail in what follows is removed and placed on the shell 5. The tank 4, the shell 5 and the steering wheel 19 are arranged around an axis of

common symmetry XX '.

  According to the invention, the rolling structure is moved relative to the chassis 2 by removing the bolts 13 and 14 and by raising the upper parts of the branches 8 and 9 to the zone B so as to place the orifices 8a and 9b of on the one hand, 8a and 9b on the other hand, respectively, in alignment with the holes 33 and 34, the bolts 13 and 14 can then be inserted into these holes in alignment. Furthermore, the foot 15 is raised inside the frame 2 and the bolts 16 and 17 are arranged inside two holes

c and 15d located at the bottom of the foot 15.

  Thanks to this transformation, the concrete mixer is in the configuration of one of those shown in Figure 3, so that it occupies a minimum volume. Note that this transformation was performed without intervention on the drive system and, in particular, on the motor, its drive pinion 6 or the rack surrounding the tank 4, so that no delicate operation is necessary . Similarly,

  when installing the mixer in the position of use

  the operations to be carried out are within the reach of a user

occasional

  In the position shown in Figure 3, the concretes

  are stacked so as to constitute a pile or column whose height H is less than 2.20 meters, so that

  four stacked mixers can be installed inside

  in a normal height room or transport container. This is of particular interest in the case where concrete mixers must be transported from their manufacturing site to their place of sale and / or use. Note that in the position of Figure 3, the wheels 11 and 12 of the mixer at the base of the stack can be used to move it. When it is necessary to move

  a stack of cement mixers, it is enough to switch

  ci to bring it from the position shown in full lines to the position shown in phantom in Figure 3 and the

  push or pull in the desired direction of travel.

  On the other hand, when a user or a buyer wants to move one of the concrete mixers, just take the mixer on the top of the column, put it on the ground and tilt as previously indicated to take it to the desired location. The invention therefore makes it possible, thanks to the always possible use of the wheels of the mixer, to greatly facilitate the movement thereof, even when it is in a storage or transport configuration. As it appears more clearly in FIG. 4, the concrete mixer of the invention is provided with a tab 30 in the shape of a V spaced apart and provided with two upper plates 30a and 30b on which the shaft 10 'of a concrete mixer can rest. upper 1 'stacked on a concrete mixer 1 according to the invention. The V shape of the lug 10 enables it to effectively absorb the forces due to the weight of the concrete mixer 1 'whose essential constituents bear identical references to

  those of cement mixer 1 to which a "premium" has been added.

  This V shape also allows the central portion of the lug to rest on a sleeve 31 surrounding the drive shaft of the motor to the pinion 6 for driving the mixer in rotation. Given its function of supporting the gear shaft and protection, this sleeve 31 is a robust piece which, during the transport and / or storage phases of the mixer, can largely support the

  weight efforts transmitted by the leg 10.

  On the other hand and for the purpose of stability of the battery shown in Figure 3, it is noted that jumpers 35 are provided to be mounted on the plates 30a and 30b of the tab for example by means of wing nuts 36. These riders cover the shaft 10 'of the concrete mixer 1' when it is stacked on the concrete mixer 1 so as to avoid any tilting of one

  of these mixers in relation to each other.

  As can be seen in FIG. 5 where the lower part of a concrete mixer 1 'is shown stacked on a concrete mixer 1 according to the invention, the foot 15' of the mixer 1 'is provided with a sole 32', the foot 15 of the cement mixer 1 being

  provided with an identical sole 32 visible in Figures 1 and 2.

  This sole 32 'is pierced with at least one hole while the upper part of the frame 2 of the mixer 1 is provided with a flat bearing surface 38 pierced with holes corresponding to those of the sole 32'. It is therefore possible to immobilize the foot 15 'relative to the frame 2 by inserting fastening means, such as bolts or pins, in bores opposite the sole 32' and the bearing surface 38. Like the jumpers 35, this sole 32 'makes it possible to give a good stability to the stack shown diagrammatically in FIG.

figure 3.

  The distance between the fastening zones A and B on the one hand and the different orifices of the foot 15 are substantially equal, so that the foot 15 can be immobilized with respect to the frame 2 in two positions substantially corresponding to the two positions of the rolling structure 7 with respect to the frame 2. Thus, the concrete mixer retains between its two

  configurations, a substantially constant attitude.

  The method of fixing the steering wheel 19 on the concrete mixer 1 appears more clearly in Figures 6 and 7. The steering wheel 19 comprises a transverse bar 19a disposed according to a diameter of a torus 19b forming operating member. The cradle 3 is secured to a shaft 40 pivotally mounted inside an upper end of the frame 2. This shaft 40 is traversing relative to the frame 2 and integral with a flexible blade 41 which can be made from a steel piece whose thickness is between 2 and 15 mm. This flexible blade appears in perspective in Figure 2 and in section in Figures 6 and 7. Furthermore, a disc 42 is fixed on the frame 2 and also through the shaft 40. The disc 42 is provided with notches 43 regularly distributed at its periphery and corresponding to angular immobilization positions of the

  cradle 3 with respect to the frame 2.

  The transverse bar 19a of the steering wheel 19 is, in turn, provided with an extension 44 extending towards the disc 42 and able to penetrate selectively into one of the notches 43. The height h1 of the extension 44 is slightly superior to the

  distance d1 separating the disk 42 from the transverse bar 19a.

  Thus, in the position of Figure 6, the extension 44 enters one of the notches 43, so that the cradle 3 is immobilized in rotation relative to the frame 2. The crossbar 19a is mounted on the flexible blade 41 thanks to

of a bolt 45.

  When it is necessary to rotate the cradle 3 about the axis of the shaft 40, a user can exercise on the torus 19b, in the vicinity of the end of the bar 19a

  remote from the bolt 45, a force F which tends to extract the extension

  44 of the notch 43 in which it is engaged. This is possible because the blade 41 is flexible, so that by acting on the bending of this bar, the extension 44 can be moved relative to the end of the blade 41 which is remote from the bolt 45. Advantageously, also takes advantage in this case of the flexibility of the crossbar 19a which can also be slightly deformed in bending. Thus, the position of FIG. 7 is reached, the rotation of the steering wheel 19 and the

  tilting of cradle 3 are possible.

  In order to limit the amplitude of the bending movement of the blade 41 and possibly of the bar 19a, the extension 44 is provided with a stop 44a constituted by the extension of the extension 44 in the direction of the shaft 40. elsewhere, the flexible blade 41 comprises, at its end farthest from the bolt 45, a notch 41a, visible for example in Figures 2 and 5, in which is permanently at least partially accommodated the extension 44. Thus, when exerts a force F as shown in Figure 7 on the flywheel 19, the abutment 44a abuts against the blade 41 at the bottom of the notch 41a, so that the displacement of the extension 44 to the inside The depression of the notch 41a is limited by the cooperation of the stop 44 and the blade 41. This makes it possible to avoid plastic deformation of the blade 41 or of the bar 19a in the event of too much effort.

significant influence on the steering wheel 19.

  This indexing system of the steering wheel 19 with respect to the chassis 2 is particularly simple and does not require the manipulation of a pin or any other

  the steering wheel itself, so that the user can

  The concrete mixer is made easier. In addition, the mounting of the steering wheel 19 on the concrete mixer for use is particularly simple because it is sufficient to set up the

bolt 45.

Claims (10)

  1. Concrete mixer (1) provided with at least one wheel (11, 12) for its movement, characterized in that said wheel belongs to a rolling structure (7) adapted to be mounted on the frame (2) of said concrete mixer in two positions, one of said positions corresponding to the use of the mixer while the other position corresponds to its stacking, storage and / or transport, said wheel being used to move said concrete mixer in both said   positions of said rolling structure.   2. Concrete mixer according to claim 1, characterized in that said frame (2) is provided with two zones (A, B) for fixing said rolling structure, said rolling structure (7) being displaceable in vertical translation for   selectively cooperate with each attachment zone.   3. Concrete mixer according to claim 1, characterized in that said rolling structure comprises two legs (8, 9) joined by a shaft (10) forming an axle for a pair of wheels (11, 12), said legs being provided, in their respective upper parts, removable means of   fastening (8a, 8b, 9a, 9b, 13, 14) to said frame (2).   4. Concrete mixer according to claim 3, characterized in that it comprises a tab (30) for supporting said axle shaft (10 ') of an identical cement mixer (1') stacked on said concrete mixer, said tab being supported on a sleeve (31) surrounding the shaft for transmitting the movement of a motor to a pinion (6) driving in rotation of a tank (4) of said concrete mixer (1).   5. Concrete mixer according to claim 4, characterized in that said tab (30) carries immobilizing means (35) of said shaft (10 ') of an identical cement mixer (1') stacked on said concrete mixer (1).   6. Concrete mixer according to claim 1 comprising a   lant (19) of tilting of its mixing tank (4), characterized   characterized in that said flywheel is fixed to a flexible blade (41) and carries an extension (44) capable of selectively penetrating into radial notches (43) of a disk (42) fixed relative to the frame (2) of said concrete mixer, said extension being extractable from said notches, to allow the maneuver   said flywheel, by flexing said flexible blade.   7. Concrete mixer according to claim 6, characterized in that said extension (44) comprises a stop (44a) adapted to cooperate with one end of said flexible blade (41) in order to   to limit the flexion of said blade.   8. Concrete mixer according to claim 7, characterized in that said flexible blade (41) is provided with a notch (41a) in which is movable said extension (44) of said wheel, the displacement of said extension in said notch being limited by said stop (44a).   Concrete mixer according to claim 1, characterized in that   it comprises a telescopic foot (15) capable of being   relative to said frame (2) in two corresponding positions.   substantially to said two positions of said structure rolling course (7).   10. Concrete mixer (1 ') according to claim 9, characterized in that said telescopic foot (15') comprises a sole (32 ') adapted to be fixed on the frame (2) of a concrete mixer (1)   identical placed under said concrete mixer.