Classifications

• • E—FIXED CONSTRUCTIONS
  • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
  • E02F—DREDGING; SOIL-SHIFTING
  • E02F3/00—Dredgers; Soil-shifting machines
  • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
  • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
  • E02F3/36—Component parts
  • E02F3/40—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets
  • E02F3/402—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with means for facilitating the loading thereof, e.g. conveyors
  • E02F3/404—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with means for facilitating the loading thereof, e.g. conveyors comprising two parts movable relative to each other, e.g. for gripping

Definitions

• This invention relates to a vehicle-born bucket intended for the preparation of material masses, which comprises a rotatable mixing device placed in an internal space in the bucket, for the mixing and homogenization of different materials which together are to form a desired material mass .
• buckets have perviously been developed having rotatable mixing devices by means of which different part materials may be mixed and homo- genized in the bucket.
• a vehicle-born, front-mounted bucket is previously known from WO 92/14887 in which a mixing device is included which comprises a rotatable shaft on which individual agitator elements, e.g. radial arms located helicoi- dally along the shaft, are mounted.
• the mixing device takes up the major part of the volume of the bucket.
• a similar mixing device though primarily intended for dredger ladles, is known from US 5 491 914.
• a bucket which at the bottom thereof has a rotatable screw by means of which the contents in the bucket may be fed out through an outlet in a side wall of the bucket.
• the buckets lack means for dosing the different part materials which together are to form a desired material mass. It is specially important in connection with, for instance, casting masses, such as concrete, mortar and the like, that the amounts of part materials or components are weighed out in a correct way in relation to each other. Concrete is prepared on the basis of not only water and cement but also a silicated material, such as sand, together with fixed amounts of coarser aggregates. If the later fractions are not dosed correctly in relation to each other and to the cement material, a concrete is obtained which does not have the desired characteristics.
• a primary object of the invention is to create a bucket which, in addition to enabling mixing and homogenization of the components included in a mass, also can guarantee a simple filling of different components in the bucket.
• Another object is to create a structurally simple bucket which can fulfil the task of dosing the part materials in a way which does not disturb the ability of the bucket to take up, by displacing and tilting in a conventional way, materials in the form of debris, such as sand, shingle, stone, soil, bark or the like.
• Fig 1 is a perspective view showing a first embodiment of a bucket according to the invention
• Fig 2 is a partly cut side view showing the same bucket in a position in which it is ready to take up material laying on the ground,
• Fig 3 is a partial side view illustrating how the volume of a dosing space included in the bucket may be varied
• Fig 4 is a partially cut side view showing a second, alternative embodiment of the bucket according to the inven- tion, the bucket being shown in a first, tilted functional position in which material has been received in a dosing space,
• Fig 5 is an analogous side view showing how said material is emptied in the interior of the bucket from the dosing space
• Fig 6 is a side view showing how the material mass prepared in the bucket may in its entirety be emptied from the bucket .
• the bucket 1 which is shown in figures 1 to 3 comprises, in the conventional way, a plane bottom wall 2, an arched rear wall 3 as well as two side or end portion walls 4.
• a separator device generally designated 5 is arranged in the bucket which in the example is in the shape of a substantially plane, long narrow sheet or sheet-metal plate which extends along the entire width of the bucket. Said sheet 5 defines a front space 6 from an internal space in the bucket designated 7.
• a mixing device in its entirety designated 8 which includes a rotatable shaft 9 on which a plurality of individual members 10 are fixedly mounted which have the ability to mechanically treat or agitate a material mass and mix different materials which are included in the mass.
• the shape of these treating members 10 is of minor importance, though they are exemplified in the shape of helicoidal sheet-metal plates in figure 1.
• the shaft 9 is mounted in bearings in a stand 11 which is con- nected to the rear wall 3 of the bucket by a hinge 12.
• This hinge permits at least limited turning of the stand in relation to the bucket (the opposite, free ends of the shaft 9 are not connected to the end portion walls 4) .
• a cap 13 is also included in the stand 11 inside of which there is a transmis- sion, e.g. a belt or chain driving, which may transfer force from a hydraulic motor 14 to the shaft 9 with the purpose of setting this shaft in rotation. In practice, this rotation may take place in either one of two opposite directions of rotation.
• the hydraulic motor 14 is in a suitable manner (not shown) connectable to an existing hydraulic system of a vehicle indicated at 15.
• This vehicle may consist of a tractor or shoulder-mounted loader having lifting arms 16 together with a so called standard fastener 17 with which the bucket may be demountably connected.
• the cap 13 sticks up through a hole 18 in the bucket wall 3.
• This hole 18 has a considerably larger width than the cap in this section, and therefore the stand 11 may move at least a limited distance between opposite end positions.
• the separator sheet 5 is turnable around a geometric axis which is situated at an intermediate level between the upper and lower edges of the sheet. More precisely, the sheet is turnable around a hinge arrangement which includes two first hinge members 20 arranged at opposite short ends of the sheet which position defines said geometric axis, each one of which being, through links 21, connected to a second hinge member 22, respectively.
• the individual hinge member 22 consists of a tenon which is insertable in one of a plurality of holes 23 which are recessed in a line after each other along the lower portion of the individual end portion wall 4.
• the two tenons 22 of the links 21 being inserted in the outermost pair of holes.
• the dosing space 6 has a smallest volume. In case the tenons 22 are moved to any one of the inner pairs of holes, this volume is enlarged.
• an upper portion 5' of the separator sheet is oblique in relation to the rest of the sheet.
• a fas- tener 24 for a double acting power generator 25 in the form of a hydraulic cylinder, the opposite end of which is mounted in a fastener 24 ' on the front edge of the arched rear wall 3.
• the fasteners 24, 24' include, in the conventional way, hinges permitting the hydraulic cylinder to be turned in relation to the wall 3 as well as the sheet 5. It should be noted that the hydraulic cylinder 25 is centrally placed on the bucket.
• the bucket according to. the invention may also be supplemented with accessories of different types.
• a tank 26 is shown for storing water which, if required, may be dosed to the interior of the bucket in connection with the preparation of concrete or mortar.
• particular fasteners 27 are arranged in association with the upper portions of the end portion walls 4 on which, if required, a pipe-shaped out-feeding device may be fastened by means of which concrete or mortar may be fed out from the bucket in a concentrated flow.
• the shaft 9 of the mixing device 8 is, at the opposite ends thereof, rotatably mounted in bearings in the end portion walls 4 of the bucket.
• Driving of the mixing device still takes place by means of a hydraulic motor 14 and a belt driving 13 ' which in this case is located on the outside of the bucket.
• the separator sheet 5 is turnably mounted on a transverse bar 28 which in turn is connected to two turnable arms 29 placed immediately on the inside of each end portion wall, respectively. Each arm 29 is applied on a hinge 30 which is pivotally mounted in bearings in the appurtenant end portion wall.
• the lower portion of the sheet 5 is arranged to co-operate with at least one stop device 31 on the inside of each end portion wall.
• the stop device which may consist of a fixed, projecting shoulder, is of a moderate height, and therefore the lower edge of the sheet 5 may run free from the stop shoulder after having been lifted somewhat from the bottom 2 of the bucket.
• a spring 32 always strives to bring the sheet 5 to a turned out outer end position in which the sheet co-operates with the stop shoulders 31.
• a power transmission generally designated 33 In order to turn the arms 29 so as to lift the sheet 5 from the bottom 2 of the bucket, at least one of the two arms is connected to the mixing device 8 by a power transmission generally designated 33.
• This power transmission includes an eccentric body 34, a lever arm 35, a carriage beam or a draw element 36 as well as a second lever arm 35' which is rigidly coupled to a friction clutch 37 which in turn is connected to the rotation shaft 9 of the mixing device.
• the separator sheet or plate 5 is shown in a starting position in which the outer parts of the arms 29 are maximally turned down in the direction towards the bottom 2 of the bucket.
• the lever arms 35, 35' are in outer end positions.
• the eccentric body 34 will apply a force to the arm 29 which brings the outer part of the arm to be turned up in the direction from the bottom of the bucket, whereby the sheet is lifted so that the bottom edge thereof runs free from the stop shoulders 31.
• the lever arms 35, 35' are returned to the positions thereof shown in figure 4 by means of the friction coupling, the eccentric body 34 allowing the outer parts of the arms 29 to be turned in the anti-clockwise direction around the flexible axle 30, whereby the lower edge of the sheet again is located against the bottom of the bucket, more precisely in the area outside of the stop shoul- ders 31.
• the bucket is run, by means of the vehicle 15, into, for instance, a heap laying on the ground of the part material in question, e.g. sand. This is done in the conventional way, i.e. with the bottom of the bucket horizontally oriented, e.g. sliding against the ground.
• the separator sheet is locked and immovable in relation to the rest of the bucket.
• the bucket is tilted to the turned up position which is shown in figure 4.
• the existing surplus material falls off, possibly after having shaken the bucket, the top surface of the material mass in the main being placed in a plane extending between the oblique edges of the end portion walls.
• the space 6 will be filled with a predetermined volume quantity of the material .

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Mining & Mineral Resources (AREA)
• Civil Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Structural Engineering (AREA)
• Mixers Of The Rotary Stirring Type (AREA)
• Shovels (AREA)
• Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (1)

Family

ID=20406939

Family Applications (1)

Country Status (3)

Cited By (1)

Citations (2)

• 1997
  • 1997-05-15 SE SE9701797A patent/SE509442C2/sv not_active IP Right Cessation
• 1998
  • 1998-05-13 AU AU75595/98A patent/AU7559598A/en not_active Abandoned
  • 1998-05-13 WO PCT/SE1998/000878 patent/WO1998051871A1/en active Application Filing

Patent Citations (2)

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