WO2012017444A1 - Production de béton hautement compact et équipement de production et de transport pourvu d'un nouveau dispositif de pesage, de transport, de mélange et d'évacuation - Google Patents

Production de béton hautement compact et équipement de production et de transport pourvu d'un nouveau dispositif de pesage, de transport, de mélange et d'évacuation Download PDF

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Publication number
WO2012017444A1
WO2012017444A1 PCT/IN2010/000706 IN2010000706W WO2012017444A1 WO 2012017444 A1 WO2012017444 A1 WO 2012017444A1 IN 2010000706 W IN2010000706 W IN 2010000706W WO 2012017444 A1 WO2012017444 A1 WO 2012017444A1
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WIPO (PCT)
Prior art keywords
novel
mixing
wcmd
transportation equipment
highly compact
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Ceased
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PCT/IN2010/000706
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English (en)
Inventor
Amit Arun Gokhale
Anand Arun Gokhale
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Individual
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Individual
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Publication of WO2012017444A1 publication Critical patent/WO2012017444A1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C9/00—General arrangement or layout of plant
    • B28C9/04—General arrangement or layout of plant the plant being mobile, e.g. mounted on a carriage or a set of carriages
    • B28C9/0454—Self-contained units, i.e. mobile plants having storage containers for the ingredients
    • B28C9/0463—Self-contained units, i.e. mobile plants having storage containers for the ingredients with a mixing discharge trough with a free end, e.g. provided with a mixing screw or pivotable about a vertical or horizontal axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
    • B28C7/04—Supplying or proportioning the ingredients
    • B28C7/0404—Proportioning
    • B28C7/0418—Proportioning control systems therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
    • B28C7/04—Supplying or proportioning the ingredients
    • B28C7/0422—Weighing predetermined amounts of ingredients, e.g. for consecutive delivery

Definitions

  • the present invention relates to an apparatus for production of concrete.
  • the present invention relates to combined activities of production & transportation of concrete for construction purpose.
  • Concrete is used worldwide for various construction purposes. Concrete is produced by mixing different type of gravels or crushed aggregates, fine aggregates like natural or crushed sand with cement and water in various proportions to have various grades of concrete. In other words concrete is a homogeneous mixture of different types of aggregates, sand, cement & water. Presently there are various types of equipment available separately for production and transportation of concrete from the place of production to the place of construction, some are discussed as under:
  • concrete is produced by batching the ingredients on weight basis and after mixing the ingredients in a central mixing plant installed at a particular location, these central plants are called stationary Ready-mix plants. Stationary plants require a high capacity dedicated power source for the batching & mixing operation.
  • the mixed ingredients (wet concrete) are transported to the construction site in rotating transit mixer drums mounted on commercial transport vehicles. The transit mixer drums keep the concrete alive during transport.
  • Concrete is also produced by mobile plants, which are trailer mounted and require a tractor truck to tow them from one place to another. However such are unable to transport the raw materials required for making concrete (dry ingredients) along with the plant from one location to another as a regular mean of transportation.
  • the trailer mounted plants are thus very bulky and of very big size and have larger turning radius because of the trailer/ trolley arrangement and are used only to carry the plant (and not the raw materials) from one location to another.
  • volumetric mixers which can carry the raw materials and produce concrete at site by proportioning the raw materials on the basis of volume.
  • volumetric proportioning of limited ingredients and improper mixing the volumetric type of mixers have very limited applications.
  • volumetric mixers work on principle of continuous flow and do not guarantee a 100% homogeneous mix and hence are used only for small and less important jobs.
  • ready-mixed concrete produced by batching the ingredients on positive weight basis is extensively used.
  • the construction industry across the world utilizes the concrete, the ingredients of which are batched on a positive weight based batching system in a stationery / central /mobile mixing plant.
  • the concrete is produced by a forceful and homogeneous mixing of the various ingredients in various types of existing proven mixers like reversible drum, single/ twin shaft, planetary or Pan type mixers.
  • United Kingdom patent number GB 2032290 discloses a mobile mixer and ready-mixed mortar delivery system mounted on a mobile truck.
  • the mobile mixer and ready-mixed mortar delivery system enables the ingredients of the mortar to be supplied in correct proportions at a central mixing plant where from they are delivered to a construction site in usable condition with no further mixing required by on-site operatives.
  • United Kingdom patent number GB 2032290 includes a mixing chamber in which a rotatable mixing screw causes mixing of the ingredients of the mortar. The mixing screw is driven by a hydraulic motor powered by a power-take-off of the vehicle engine.
  • United Kingdom patent number GB 2032290 also includes a high level water tank mounted at a front of the truck to supply water to the mixing chamber via a valved conduit.
  • One biggest disadvantage of the present invention is that the mobile mixer and ready-mixed mortar delivery system of United Kingdom patent number GB 2032290 does not carry out the actual weighing and batching of the raw materials on positive weight basis and the raw materials are batched earlier by a separate central mixing plant. Further another disadvantage of United Kingdom patent number GB 2032290 is that it needs a high power diesel engine to power the mixing screw as the capacity of the mixer goes up. Further another disadvantage of United Kingdom patent number GB 2032290 is that it mixes the previously batched material with water using a mixing screw, which has to be driven in forward & reverse direction for mixing and discharging respectively. However the discharge function is not complete unless the mixing screw axis & the bottom of the chamber is inclined towards the discharge tube.
  • United States Patent 5730523 discloses a portable concrete plant adapted to be transported on a single transporting vehicle to a construction site with the help of a tractor via a transmission which supplies power to an electric generator and a hydraulic pump mounted on the vehicle.
  • the electric generator and the hydraulic pump are adapted to rotate a rotating drum for mixing concrete.
  • the transporting vehicle further includes containers for storing of various ingredients required for production of concrete.
  • a concrete pump is provided for dispensing the concrete from the rotating drum.
  • a computer is used to control the various containers and scales so as to vary the proportions of the various ingredients in order to produce concrete of varying strength.
  • United States Patent number 5730523 is a very bulky equipment having no. of moving parts with a larger tuming radius because of the length of the vehicle and it is difficult to maneuver in city traffic. Also due to the weight, size & more moving parts of the equipment, the fuel consumption is more.
  • one more disadvantage of the equipment is the mixing in a rotating drum, which increases the cycle time considerably because of higher no. of rotations required to achieve a homogeneous mix. Also the drum mix requires more mixing time because mixing is based on gravity rather than a force full mixing in a pan or any other type of mixer. This reduces the output of the equipment considerably.
  • United States Patent Number 4577805 discloses an agricultural mixing and grinding machine which includes a frame with a driven shaft adapted to be driven by a PTO shaft connectable to a tractor. A plurality of bins is provided to contain different feed material to be ground and/or mixed and a grinding unit mounted adjacent to one end of the bins. The materials in the bins are discharged into a confluence with the help of metering augers extending longitudinally beneath the bins. The metering augers are operated by means of D.C. electric motors which derive power from an A.C. generator driven by the PTO shaft.
  • One disadvantage of United States Patent Number 4577805 is that weighing of the materials is not based on positive weight basis principle and depends upon fietering system. Another big disadvantage of United States Patent Number 4577805 is that it cannot be employed for the purpose of manufacturing construction quality concrete as it is specifically designed for agricultural use.
  • United States Patent Number 6286987 discloses a cement mixing truck that utilizes a system and a method for controlling speed of an engine of the cement mixing truck.
  • the internal combustion engine of the cement mixing truck is used to provide power to a concrete mixing drum mounted on the cement mixing truck.
  • the cement mixing truck includes a power take off (PTO) assembly that includes an output shaft connected to a drum motor controller for providing power to a drive motor in order to rotate the concrete mixing drum at variable speeds.
  • PTO power take off
  • One disadvantage of US Granted Patent 6286987 does not include separate compartments for carrying different aggregates and water required for preparing a concrete mixture and the required weight of the aggregates are mixed in the central batching & mixing plant in required proportion and carried to the site.
  • United States Patent Application Number 20070257392 discloses an apparatus for manufacturing concrete mounted on a vehicle for transporting the apparatus to a construction site and manufacturing concrete on-site.
  • the apparatus of United States Patent Application Number 20070257392 includes a plurality of separate containers adapted to store components required for preparing concrete and a tank for storing water, a weighing means for determining weight of at least one of the components, a mixer for mixing the components together and dispatching mixed concrete, and a delivery means for dispensing components from their respective containers and conveying components to the mixer.
  • the rate of delivery of components by the delivery means is dependent on the weight of the at least one component determined by the weighing means and the particular supply of mixed concrete required from the mixer.
  • One biggest disadvantage of the United States Patent Application Number 20070257392 is that the equipment does not actually weigh the raw materials but depends upon the rate of delivery which again depends upon the known weight of at least one ingredient. Another disadvantage of the United States Patent Application Number 20070257392 is that it is completely dependent upon the processor for the accuracy of the proportion of ingredients and cannot be operated in manual mode in case of processor failure. Another very big disadvantage of the United States Patent Application Number 20070257392 is that it cannot operate on a surface having even 5 % inclination because of the delivery rate system. In such a case the machine has to be operated on volumetric basis which is not a desirable method of producing widely acceptable concrete.
  • One more disadvantage of the United States Patent Application Number 20070257392 is that the processor is connected to the weighing as well as delivery means. It continuously adjusts the required proportion of the ingredients by controlling the rate of delivery or in other words the opening of the gate. This is a combination of loss in weight based batching with a volumetric batching_system & both are not well accepted in the industry.. Furthermore disadvantage of the United States Patent Application Number 20070257392 is that it carries out the mixing of ingredient in an mixing auger in a continuous flow. The mixing auger is always open at the discharge end and cannot mix the materials as efficiently as a batch type mixer, which is provided with a closed discharge gate during mixing.
  • United States Patent Application Number US2002001255 discloses a portable concrete plant powered by an internal combustion engine is attached to a truck for producing ready mix concrete proximate to a location where the ready mix concrete is used.
  • the portable concrete plant includes storage regions for storing components used in the ready mix concrete.
  • the storage regions of the portable concrete plant include weight cells monitored by a computer control system to ensure accurate delivery of the components.
  • the portable concrete plant further includes conveying systems for conveying the components from the storage regions to a slurry mixer and from the slurry mixer to a system discharge port.
  • the internal combustion engine further preferably includes a high output AC alternator operably connected thereto to power the operations of electrically powered components on the portable concrete plant.
  • United States Patent Application Number US2002001255 One disadvantage of United States Patent Application Number US2002001255 is that it separately carry out all the activities like weighing on loss of weight, conveying of various materials trough various different conveyors and mixing in a separate mixer . This calls for high power separately installed an internal combustion engine for driving the various parts thereby increasing the no. of moving parts and running and maintenance cost. Further, United States Patent Application Number US2002001255 uses the principle of negative weight for weighing the various components of ready mixed concrete. One more disadvantage of United States Patent Application Number US2002001255 is that because of size & weight it again uses a trailer frame which is pulled or towed by a' tractor truck. This seriously limits the utility of the equipment as a concrete transportation vehicle in congested city traffic.
  • any of the above could not provide a highly compact, single machine mounted on a single rigid truck, which could transport all the raw materials with its own power source and produce concrete by actually weighing each and every material & then mixing in a closed forceful compulsory mixer.
  • there is no single machine available which can alone work as a stationary plant as well as a transit mixer (for weight based concrete) , eliminating the need of using different equipment for different activities & bringing down the cost of concrete by 25 to 30 %.
  • An object of the present invention is to provide a highly compact concrete batching, mixing & transportation equipment which combines the activities of transportation and production of concrete by actually weighing each solid ingredient & mixing at the site.
  • One very important object is to reduce the weight , size and no. of moving parts of the equipment by using a "novel W.C.M.D. device" which alone carries out all the activities of weighing, conveying, Mixing and discharging.
  • Still another object of the present invention is to provide an equipment which is easy to operate and easy to maintain. By having very less no. of moving parts.
  • Yet another object of the present invention is to provide a produce fresh concrete in situ batched accurately by weight & not by volume.
  • an object of the present invention is to reduce the cost of production of concrete by minimizing various stages of re-handling of raw materials.
  • An additional object of the present invention is to provide an equipment which is highly compact & can be mounted on a single rigid truck chassis.
  • Another object of the present invention is to provide an equipment which can supply concrete on weight basis at any distance regardless of distance and even at remote areas.
  • An added object of the present invention is to provide an equipment which is simple in construction and offer a higher advantage even in capital cost.
  • an object of the present invention is to provide an equipment which is versatile in operation and can be used in different ways by different users to produce concrete.
  • Yet another object of the present invention is to reduce the power required to produce concrete by combining the activities of weighing, conveying , mixing and discharging.
  • Still another object of the present invention is to provide a mobile equipment for transportation and production of concrete, which is easy to maneuver in congested city traffic and narrow lanes.
  • Further another object of the present invention is to provide a concrete producing and transporting equipment which operates on the principle of positive weight gain.
  • An additional very important object of the present invention is to provide an equipment which is powered by the engine of the vehicle on which is mounted.
  • An additional objective is to reduce the required horsepower so a much smaller slave engine can be used effectively if the drive is not taken from the PTO.
  • An added object of the present invention is to provide an equipment which absolutely eliminates the use of external source of power.
  • Still an object of the present invention is to provide an equipment which reduces the use of man power.
  • One more object of the present invention is to provide an equipment which actually carry out the proper and accurate weighing of each solid ingredient in a proper electronic weighing system.
  • One additional object of the invention is to provide an equipment where in all four aggregates ( two coarse & two fine) can be fed in respective compartments by a front end loader without a belt conveyor or manual feeding. At the same time is very compact in size & light in weight so as to enable itself to carry more raw material.
  • Another object of the present invention is to provide an equipment which can carry same OR MORE quantity of concrete like an equivalent capacity transit mixer mounted on equivalent capacity single rigid commercial truck & produces concrete like a stationary plant after reaching site.
  • Another object of the invention is to provide an equipment which can alternatively mounted on a very small trolley and can be transported even in congested city traffic. 04.
  • a highly compact concrete batching, mixing & transportation equipment mounted on the chassis of a single rigid truck for holding plurality of concrete constituents (raw materials) in separate compartments and subsequent mixing of the concrete constituents, said equipment comprising: a. Storage space having a plurality of silos provided with a conduits means having controllable gates at the operative lower end of each of said silos, each of said silos adapted to store at least one discrete solid constituent, each of said gates adapted to be driven by a first drive mechanism D1;
  • the cement silo is provided with small rotary gate valve for slow and controllable discharge of cement.
  • the cement motor is driven by drive D2
  • a "novel W.C.M.D. device” which alone carries out all the activities of weighing, conveying , mixing and discharging is located operatively below said storage space, said device adapted to be suspended from a plurality of load cells and adapted to receive said solid constituents from each of said silos, said device is provided with a gate valve adapted to open after a predetermined weight of said solid constituents is accomplished alone; with water and a predetermined mixing time is achieved, said gate valve adapted to receive drive from the first drive mechanism D1; The gate valve is provided at the extreme end of the said novel mixing device.
  • said "novel concrete mixing device” adapted to receive drive from a Fourth drive mechanism D4; f. a control system adapted to control said drive mechanisms in automatic as well as manual mode ; g. an alternator adapted to convert mechanical drive into electrical energy to operate said drive mechanisms; and h. a power take-off shaft connected to the engine transmission of said vehicle to drive said alternator.
  • each of the silos are provided with a cover.
  • the gates are pneumatically operated.
  • the gates of all aggregate silos can be replaced with small discharge belt conveyors.
  • a dedicated slave engine connected to the said alternator mounted on same chassis can be used to drive the entire equipment if PTO drive is not available.
  • a dedicated slave engine connected to a hydraulic system can be used to operate entire machine hydraulically with the same said "novel W.C.M.D. device".
  • the solid constituents are typically stones or gravels, fine particles, cement and fly ash, said stones Or gravels are of various size, said fine particle includes stone dust or river sand.
  • the silos containing cement is typically provided with at least one rotary discharge valve adapted to deliver the cement to the said novel mixing device.
  • the cement silo can be provided with a small screw instead of a rotary gate valve.
  • the said "novel W.C.M.D. device” is adapted to weigh the solid constituents by positive weight gain.
  • the gate valve of said “novel W.C.M.D. device” is pneumatically operated.
  • the gate valve is adapted to be operated by the first drive mechanism D1.
  • the said "novel W.C.M.D. device” is provided with at least one discharge gate
  • the said “novel W.C.M.D. device” is enclosed within a framework & suspended on electronic load cells.
  • the equipment is provided with a protective cover on all sides.
  • the equipment is open on all sides.
  • the said "novel WCMD device” is used either in horizontal condition Or in an inclined (but entire WCMD is balanced load cells) position in order to eliminate the discharge belt or the discharge auger.
  • the said " novel WCMD device” is constructed by using at least one single shaf having either simple Archimedean spirals or modern screw spirals for combining all the four activities of weighing, conveying, mixing & discharging in one simple device.
  • the said device as stated above is typically used either in horizontal condition ( to get more storage of raw materials above) OR in an inclined position ( to eliminate the discharge belt or discharge screw).
  • the said "novel W.C.M.D. device” typically consists off three sections divided by virtue of the operations achieved in that particular section.
  • the three sections are :
  • the said "novel W.C.M.D. device” (03) is kept in horizontal condition (Or inclined as shown in the second preferred embodiment) enclosed in a steel framework (12) and suspended on electronic loadcells (18).
  • a single shaft (21) having either simple Archimedean spiral blades or alternatively modern screw spirals (22) runs throughout the length of the said novel mixing device.
  • the bottom of the mixing device is made semi-circular and can be provided with replaceable liner plates. A uniform gap is maintained between the bottom wall & the helicoids to ensure that the aggregates are pushed forward by screw action.
  • the helicoids spirals (22) are converted into continuous ribbon which allows through mixing of ingredients.
  • the spirals (22) are not converted into ribbon and kept as it is.
  • the single screw shaft (21) is powered by a Gearbox & motor (14) specifically operating at a low RPM (so as to enable accurate weighing even in dynamic condition)generating high torque.
  • another drive is taken from the said single shaft (21),which drives another shaft (06) which runs parallel to & above the said single shaft (21).
  • the parallel shaft (06) is provided with a no. of mixing blades.
  • the drive is typically taken through an arrangement of chain & sprockets. The two shafts mix the raw materials thoroughly within a very short time when the discharge gate at the bottom of the mixing, surge & discharge section is perfectly closed by a slide gate (17).
  • the parallel shaft (06) is provided screw spirals instead of mixing blades.
  • the spiral blades are provided in exactly opposite in direction to the spirals (22).
  • the spirals (22) shall push the materials towards the discharge gate and the surging material shall be pushed by the spirals of parallel shaft (06) towards the opposite direction relieving the said single shaft (21) of additional load when the material is surging in the surge hopper.
  • a separate geared motor is employed to drive the parallel shaft in case of bigger batch sizes.
  • the said "Novel W.C.M.D. Device” is used in two different modes for the weighing activity namely static weighing mode OR dynamic weighing mode.
  • static weighing mode all the raw materials are first weighed cumulatively while the single screw shaft is static and not rotating.
  • dynamic weighing is explained as under: kindly refer to the drawing given below .
  • the said "novel W.C.M.D. device”(03) is suspended on electronic loadcells (18).
  • the drive gearbox & motor (14) are counterbalanced by the weight of the "Mixing.surge & discharge section" (23).
  • the loadcells (18) are mounted on the upper frame of the "receiving & weighing section" (20).
  • a controllable discharge gate (17) typically operated by a pneumatic cylinder is provided at the bottom of the "mixing.surge & discharge section"(23) as shown in the figure.
  • the said single shaft (21) starts rotating along with the parallel mixing shaft (06-provided only in the mixing, surge & discharge section) as soon as the motor starts.
  • the "receiving & weighing section” (20) is placed exactly below the discharge gates provided for aggregates & cement silos (15 & 16 respectively).
  • the extreme two silos are provided with sand & stone dust ( comparatively fine materials); cement gate (16) is provided at centre and the coarse aggregates are provided on the other side.
  • a digital weight indicator shows the exact value with the help of electronic load cells (18).
  • the gate closes and cement valve starts discharging.
  • the weight indicator shows the exact cumulative weight.
  • the water pump starts delivering water into the receiving & weighing section (20).
  • a water pipeline runs throughout near the upper frame of the weighing and receiving hopper and is provided with nozzles & holes through which the water is delivered. After receiving exact weight of water, the water pump stops.
  • Figure 1 illustrates a preferred embodiment of the "Highly compact concrete batching, mixing & transportation equipment with a novel W.C.M.D. device" in accordance with the present invention
  • Figure 2 illustrates said "novel W.C.M.D. device” of the "Highly compact concrete batching, mixing & transportation equipment with a novel W.C.M.D. device”in accordance with the present invention
  • Figure 2a illustrates The top view of said "novel W.C.M.D. device” of the "Highly compact concrete batching, mixing & transportation equipment with a novel W.C.M.D. device” in accordance with the present invention
  • Figure 3 illustrates a storage space of the "Highly compact concrete batching, mixing & transportation equipment with a novel W.C.M.D. device" in accordance with the present invention
  • Figure 4 illustrates a conveyer belt of the "Highly compact concrete batching, mixing & transportation equipment with a novel W.C.M.D. device" in accordance with present invention
  • Figure 5 illustrates water tank of the "Highly compact concrete batching, mixing & transportation equipment with a novel W.C.M.D. device" in accordance with present invention
  • Figure 6 illustrates the vehicle for mounting the "Highly compact concrete batching, mixing & transportation equipment with a novel W.C.M.D. device"
  • Figure 7 illustrates the framework for enclosing & suspending the said " Novel W.C.M.D. device” of the "Highly compact concrete batching, mixing & transportation equipment with a novel W.C.M.D. device”
  • Figure 8 illustrates the assembly of the "Highly compact concrete batching, mixing & transportation equipment with a novel W.C.M.D. device" without the vehicle.
  • the water tank is not shown for the purpose of clarity.
  • Figure 9 illustrates top view of the assembly of "Highly compact concrete batching, mixing & transportation equipment with a novel W.C.M.D. device" without the vehicle.
  • Figure 10 illustrates backside view of the assembly of "Highly compact concrete batching, mixing & transportation equipment with a novel W.C.M.D. device" without the vehicle.
  • Figure 11 illustrates a flow diagram of the operation of the drive mechanism of "Highly compact concrete batching, mixing & transportation equipment with a novel W.C.M.D. device” in accordance with the present invention.
  • Figure 12 illustrates the Highly compact Concrete Production & Transportation Equipment with inclined version of WCMD (without Truck) in order to eliminate the discharge belt or discharge screw.
  • Figure 13 illustrates the inclined version of WCMD device in isolation.
  • Figure 13 also illustrates the WCMD embodiment in which the parallel shaft (06) is provided with helicoids spiral blades in opposite direction of the main screw spirals (22).
  • a "Highly compact concrete batching, mixing & transportation equipment with a novel W.C.M.D. device" in accordance with this invention is generally indicated by the reference numeral (01) and is particularly shown in figure 1 of the drawing.
  • “Highly compact concrete batching, mixing & transportation equipment with a novel W.C. .D. device” (01) comprises a storage space (02), a “Novel W.C.M.D. Device (03), a conveyer belt (04), and a control system (not shown in the figure).
  • "Highly compact concrete batching, mixing & transportation equipment with a novel W.C.M.D. device” (01) is adapted to be operated at the site of construction.
  • the storage space (02), shown in figure 3, comprises a plurality of silos (14a), (14b), (14c), (14d) & (14e) separated from each other by means of a plurality of partition walls.
  • Each of the silos (14a), (14b), (14c), (14d), and (14e) at the operative upper end is covered with the help of a lid which is not shown in the drawing.
  • Each of the silos (14a), (14b), (14c), (14d), and (14e) are covered by separated lids.
  • the storage space (02) is provided with a common lid.
  • the device" (01) of the present invention is adapted to store a plurality of discrete solid constituents in each of the silos (14a), (14b), (14c), (14d) & (14e) .
  • the solid constituents comprise stones or gravels of 20 mm size and 10 mm size, fine particles, cement and fly ash (additional. Not shown in the picture).
  • the fine particles comprise river sand or crushed sand.
  • the stones of 20 mm size, the stones of 10 mm size, the fine particles, the cement are separately stored in the silos (14a), (14b), (14c), (14d) & (14e)
  • the storage capacity of the storage space (02) is such that the total quantity of the concrete constituents that can be stored is sufficient to produce at least 5 /6 cubic meter of concrete of any grade.
  • the operative lower end of each of the silos (14a), (14b), (14c), (14d), containing stones of 20 mm size, stones of 10 mm size, fine particles and river sand are each provided with a conduit means having a pneumatically operated gate (item no.
  • the drive mechanism (D1) comprises a first electrical motor driving the air compressor so as to control the opening and closing of the gates (15) of the silos (14a), (14b), (14c), (14d). and the gate valve (Item no. 17 shown in Figure 02) of the "Novel W.C.M.D. Device"(03) .
  • the rotary valve (16) of silo (14e) containing cement is driven by motor D2.
  • Novel W.C.M.D. Device (03) shown in figure 2 & Figure 2a, and described with reference to the drawing earlier, is suspended on plurality of load cells (Item No. 18 shown in Figure No.02) and carry out weighing of each and every ingredient including water on cumulative basis on the principle of positive weight gain.
  • the application of the principle of positive weight gain results in the use of load cells of smaller size as compared to the load cells applicable in case of use of the principle of loss in weight.
  • the load cells (18) provided are such that they are shock proof and are provided with locking arrangements in order to protect the load cells (18) during transit.
  • the single shaft (21 shown in Figure 02) with spirals (22 shown in Figure 02) is completely enclosed in a tube section, where it conveys all the raw materials received in the "receiving & weighing section" (20) to the " Mixing, Surge and Discharge section” (23 shown in figure 02) .
  • the device On the extreme end of the "Mixing, surge & Discharge section” (23), the device is provided with a pneumatically operated slide gate valve (17) adapted to open for discharging of fresh concrete.
  • the conveyer belt (or alternatively a discharge screw) (04), shown in figure 4, is located operatively below the slide gate (17)of the "Novel W.C.M.D. Device” (03).
  • the conveyer belt (04) is a endless continuous belt joint at both ends so as to form a ring.
  • the conveyer belt (04) is supported with the help of a plurality of rollers(shown in figure 4) located at predetermined positions.
  • the conveyer belt (04) angled so as to ensure smooth discharge of fresh concrete. Alternatively a screw conveyor can be used to discharge the fresh concrete to avoid segregation.
  • the conveyor belt (04) is typically of 3/4 ply rubber and typically has a width of 400 to 800 mm.
  • the conveyer belt (04) is operated with a conveyer drive mechanism (D3), shown in figure 11.
  • the water tank (05 shown in Figure 5 but not shown in assembly for clarity) is provided with a suitable capacity keeping in view the required output.
  • the "Novel W.C.M.D. Device” (03) is provided with a cover (not shown in the Figure) , on the “mixing, surge and Discharge section”(23). The cover can be removed for the purposes of cleaning, maintenance and inspection of mixing process.
  • "Novel W.C.M.D. Device” (03) is provided with an additional mixer element (06 shown in Figure 02) ( a shaft having mixing blades or anti-directional spiral blades running parallel to the single shaft with spirals(22).) only in the “mixing, surge and discharge section” (23). Which enables in highly homogeneous mixing so as to form concrete of the required grade.
  • the "Novel W.C.M.D. Device”(03) typically has a variable out-put capacity.
  • "Novel W.C.M.D. Device” (03) is operated with the help of a drive mechanism (D4), shown in figure 11, comprising a geared motor.
  • a control system (7- not shown in figure) is adapted to control the operation of the drive mechanisms
  • the control system (7-not shown in figure) in combination with a PLC OR Microprocessor system further enables in setting the quantity for the solid and the liquid constituents of each batch depending on the grade of concrete required for various purposes.
  • the control system has two modes of operation, namely, automatic mode of operation and a manual mode of operation.
  • the control system can automatically control the number of batches required, the operation of the drive mechanisms (D1), (D2), (D3), (D4), (D5), and sets the quantities for the solid and the liquid constituents.
  • the manual mode of operation is activated in the case of incorrect operation of the PLC or microprocessor in the automatic mode.
  • the control system is typically a programmable logic controller (PLC) Or Microprocessor based and is adapted to store data of each batch.
  • the control system can communicate with a printer so as to print the stored the data if necessary.
  • the control system includes a control panel having a digital weighing indicator, an emergency switch, a cycle start button and a trip indicator.
  • the quantity of the solid and the liquid constituents required for various grades of concretes are stored in the control system. On selecting the grade of the concrete required for a particular purpose, the " Highly compact concrete batching, mixing & transportation equipment with a "novel W.C.M.D. Device" (01) produces the required grade of concrete.
  • the actuator (not shown in figure) used is typically an air operated clutch type system.
  • the alternator (09) is connected to the motors of all the drive mechanisms (D1), (D2), (D3) ,(D4), (D5).
  • the storage space (02) is mounted on the upper frame of the framework (item No 12 shown in Figure 7) enclosing the "Novel W.C.M.D. Device"(03).
  • FIG. No. 12 One more preferred & commercially more viable embodiment is shown in the Fig. No. 12.
  • the said novel WCMD device is used in an inclined position so that the discharge height required is automatically available by the said inclination and the discharge belt or discharge screw is successfully eliminated.
  • the inclined WCMD device is however enclosed in a fabricated structure which is carefully balanced by adjusting counterweight to nullify the effect of the inclination so as to enable accurate weighing of the ingredients either in Static Or Dynamic modes of weighing.
  • the advantage of this embodiment is that it eliminates the discharge belt or auger used in the first embodiment and lowers cost associated with it. It also reduces the total connected load of the equipment and absolves the user of the maintenance cost associated with the discharge belt or the discharge screw.
  • Figure no 13 shows the inclined WCMD in isolation.
  • Figure no. 14 shows the WCMD device is further provided with an arrangement to relieve additional load on the said screw shaft (21) when the material is surging high in the " mixing, surge & discharge section" (23).
  • This arrangement is done by providing spiral blades on the parallel shaft (06). These spirals on the shaft (06) rotate in opposite direction when compared to the shaft (21) and relieve the shaft 21 of any additional load by pushing back the high surging material and avoids dead-lock in the WCMD device.
  • the parallel shaft (06) is driven by a separate drive instead off the sprocket & chain arrangement with the screw shaft (21).
  • the present invention brings a huge advantage to the industry by using a "novel WCMD device". Because of the said device, the said invention uniquely meet following achievements compared to the conventional methods & means described in the prior art:
  • the said invention Since the said invention carries raw materials and produces concrete on weight basis, it eliminates a no. of bulky and high cost equipment & brings down the cost of concrete by 25 to 30 %.
  • the highly compact concrete batching, mixing & transportation equipment with novel WCMD device, of the present invention is powered by the engine of the vehicle carrying the equipment. As the constituents of the concrete are loaded and mixed on the vehicle, the constituents are not required to be delivered to the site of construction separately and hence reduces the cost of the concrete and hence the cost of construction.
  • the present invention requires one operator for operating the compact concrete batching and mixing assembly and hence helps in reduction in the cost of manpower involved in the production of concrete. The cost involved in the usage of retarders is eliminated as fresh concrete can be produced at the site of construction.
  • the biggest advantage of the above invention is that it combines the activities of production & transportation of concrete and hence eliminates a no. of bulky equipment like stationary concrete batching & mixing plants, diesel generator sets, transit mixers and dumpers thereby saving huge amount of money & reducing emissions.

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  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)

Abstract

La présente invention concerne un équipement de dosage, de mélange et de transport de béton hautement compact (01) pourvu d'un nouveau dispositif de pesage, de transport, de mélange et d'évacuation (W.C.M.D.) (03) monté sur le châssis du véhicule (08). Le nouveau dispositif W.C.M.D. (03) est conçu pour peser, transporter, mélanger et évacuer divers ingrédients stockés dans une pluralité de silos disposés dans un espace de stockage (02). Le nouveau dispositif W.C.M.D. (03) reçoit et pèse effectivement tous les ingrédients ainsi que l'eau sur la base d'un gain de poids positif dans sa section de réception et de pesage (20). Ces ingrédients sont ensuite transportés par une section de transport (19). Ils sont mélangés avec soin dans une section de mélange, de pompage et d'évacuation (23) et du béton homogène frais est évacué par le biais d'une vanne glissante (17) et est placé par un transporteur à courroie (04). L'énergie requise pour le fonctionnement est fournie par un alternateur électrique (09) couplé à la prise de force du véhicule (10). L'invention supporte son propre matériau et sa source d'énergie, et permet de produire un béton frais sur une base de poids positive et de réduire le coût du béton de 25 à 30 % sans avoir recours à un équipement encombrant traditionnellement utilisé pour produire et transporter du béton sur la base du poids.
PCT/IN2010/000706 2010-08-03 2010-10-29 Production de béton hautement compact et équipement de production et de transport pourvu d'un nouveau dispositif de pesage, de transport, de mélange et d'évacuation Ceased WO2012017444A1 (fr)

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IN2199MU2010 2010-08-03
IN2199/MUM/2010 2010-08-03

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CN103387125A (zh) * 2012-05-08 2013-11-13 济宁市支点机电设备有限公司 配料机
ITFI20130148A1 (it) * 2013-06-20 2014-12-21 Sami Srl Apparecchiatura di stivaggio e dosaggio per materiali inerti con sistema perfezionato di estrazione e pesatura in continuo
JP2016159474A (ja) * 2015-02-27 2016-09-05 新和建設工業株式会社 コンクリートの現場練り製造ユニット
WO2017160283A1 (fr) * 2016-03-15 2017-09-21 Halliburton Energy Services, Inc. Dispositif et procédé de pétrissage pour traiter un matériau en vrac libéré de contenants portables
CN107263730A (zh) * 2017-06-23 2017-10-20 中国葛洲坝集团第五工程有限公司 地下洞室砂石拌和系统及方法
ITUA20162923A1 (it) * 2016-04-27 2017-10-27 Valter Ciaraffoni Impianto mobile per la produzione e posa in opera on-demand di miscele cementizie e bituminose
CN107324079A (zh) * 2017-06-27 2017-11-07 河南省登封市光大耐火材料有限公司 一种用于加工耐火砖的多功能设备
CN109433045A (zh) * 2018-12-20 2019-03-08 金发科技股份有限公司 组合式自动计量配料装置、系统及方法
CN110900830A (zh) * 2019-12-13 2020-03-24 周狄超 一种建筑装修用水泥搅拌装置
CN111619003A (zh) * 2020-06-04 2020-09-04 民航机场建设工程有限公司 一种混凝土砂浆转运装置
CN111823387A (zh) * 2020-07-17 2020-10-27 深圳市建安(集团)股份有限公司 一种余泥渣土改性装置及方法
CN112058172A (zh) * 2020-09-17 2020-12-11 靖州县绿之嘉实业有限公司 一种煤炭配料混合装置
CN112940924A (zh) * 2021-03-31 2021-06-11 青岛友宏畜牧机械有限公司 秸秆投料装置
CN112936606A (zh) * 2021-01-28 2021-06-11 青岛戴姆雷博机器人科技有限公司 一种混凝土的精细化处理输送装置
CN113019254A (zh) * 2021-03-03 2021-06-25 湖南杉杉能源科技股份有限公司 一种粉体物料计量混料系统及其方法
CN114004301A (zh) * 2021-11-03 2022-02-01 江苏博泰环保工程有限公司 基于聚类分析的灰渣输送系统与控制方法
CN114474387A (zh) * 2021-12-27 2022-05-13 新泰市建筑安装工程有限公司 一种建筑工地混凝土浇筑运输设备
CN114904770A (zh) * 2022-04-18 2022-08-16 安徽有余跨越瓜蒌食品开发有限公司 一种高品质瓜蒌子加工用风选机
CN114988823A (zh) * 2022-07-26 2022-09-02 上海艺盛实业有限公司 一种干拌混凝土的制备工艺
US11518065B2 (en) 2019-06-25 2022-12-06 Bay-Lynx Manufacturing Inc. Mobile aggregate hopper with arcuate side walls
CN115483042A (zh) * 2022-06-28 2022-12-16 湖南艾迪奥电子科技有限公司 一种陶瓷电容器浆料的制备装置
CN116533390A (zh) * 2023-06-08 2023-08-04 江苏雨泉混凝土有限公司 一种节能型预拌混凝土用的配料装置及配料方法
CN116901248A (zh) * 2023-08-17 2023-10-20 中国二十二冶集团有限公司 混凝土搅拌站全过程绿色生产施工工艺
CN117565236A (zh) * 2023-11-17 2024-02-20 广东省高速公路有限公司 一种集装箱式uhpc搅拌设备
WO2024113659A1 (fr) * 2022-11-30 2024-06-06 中国水利水电第五工程局有限公司 Système et procédé de mélange de matériau de sol à haute viscosité et à haute teneur en humidité
CN118456664A (zh) * 2024-07-11 2024-08-09 中晟(福建)混凝土发展有限公司 一种高精度计量的混凝土配料混匀装置及其方法
US12233573B2 (en) 2021-02-07 2025-02-25 William Slager, III Concrete residue collection system for concrete mixing trucks

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Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103387125A (zh) * 2012-05-08 2013-11-13 济宁市支点机电设备有限公司 配料机
ITFI20130148A1 (it) * 2013-06-20 2014-12-21 Sami Srl Apparecchiatura di stivaggio e dosaggio per materiali inerti con sistema perfezionato di estrazione e pesatura in continuo
JP2016159474A (ja) * 2015-02-27 2016-09-05 新和建設工業株式会社 コンクリートの現場練り製造ユニット
US11192074B2 (en) 2016-03-15 2021-12-07 Halliburton Energy Services, Inc. Mulling device and method for treating bulk material released from portable containers
WO2017160283A1 (fr) * 2016-03-15 2017-09-21 Halliburton Energy Services, Inc. Dispositif et procédé de pétrissage pour traiter un matériau en vrac libéré de contenants portables
ITUA20162923A1 (it) * 2016-04-27 2017-10-27 Valter Ciaraffoni Impianto mobile per la produzione e posa in opera on-demand di miscele cementizie e bituminose
CN107263730A (zh) * 2017-06-23 2017-10-20 中国葛洲坝集团第五工程有限公司 地下洞室砂石拌和系统及方法
CN107324079A (zh) * 2017-06-27 2017-11-07 河南省登封市光大耐火材料有限公司 一种用于加工耐火砖的多功能设备
CN109433045A (zh) * 2018-12-20 2019-03-08 金发科技股份有限公司 组合式自动计量配料装置、系统及方法
US11518065B2 (en) 2019-06-25 2022-12-06 Bay-Lynx Manufacturing Inc. Mobile aggregate hopper with arcuate side walls
CN110900830A (zh) * 2019-12-13 2020-03-24 周狄超 一种建筑装修用水泥搅拌装置
CN111619003A (zh) * 2020-06-04 2020-09-04 民航机场建设工程有限公司 一种混凝土砂浆转运装置
CN111823387A (zh) * 2020-07-17 2020-10-27 深圳市建安(集团)股份有限公司 一种余泥渣土改性装置及方法
CN112058172A (zh) * 2020-09-17 2020-12-11 靖州县绿之嘉实业有限公司 一种煤炭配料混合装置
CN112936606A (zh) * 2021-01-28 2021-06-11 青岛戴姆雷博机器人科技有限公司 一种混凝土的精细化处理输送装置
CN112936606B (zh) * 2021-01-28 2022-07-26 青岛戴姆雷博机器人科技有限公司 一种混凝土的精细化处理输送装置
US12233573B2 (en) 2021-02-07 2025-02-25 William Slager, III Concrete residue collection system for concrete mixing trucks
CN113019254A (zh) * 2021-03-03 2021-06-25 湖南杉杉能源科技股份有限公司 一种粉体物料计量混料系统及其方法
CN113019254B (zh) * 2021-03-03 2023-01-20 巴斯夫杉杉电池材料有限公司 一种粉体物料计量混料系统及其方法
CN112940924A (zh) * 2021-03-31 2021-06-11 青岛友宏畜牧机械有限公司 秸秆投料装置
CN114004301A (zh) * 2021-11-03 2022-02-01 江苏博泰环保工程有限公司 基于聚类分析的灰渣输送系统与控制方法
CN114474387B (zh) * 2021-12-27 2024-03-29 新泰市建筑安装工程有限公司 一种建筑工地混凝土浇筑运输设备
CN114474387A (zh) * 2021-12-27 2022-05-13 新泰市建筑安装工程有限公司 一种建筑工地混凝土浇筑运输设备
CN114904770A (zh) * 2022-04-18 2022-08-16 安徽有余跨越瓜蒌食品开发有限公司 一种高品质瓜蒌子加工用风选机
CN114904770B (zh) * 2022-04-18 2023-02-28 安徽有余跨越瓜蒌食品开发有限公司 一种高品质瓜蒌子加工用风选机
CN115483042A (zh) * 2022-06-28 2022-12-16 湖南艾迪奥电子科技有限公司 一种陶瓷电容器浆料的制备装置
CN115483042B (zh) * 2022-06-28 2024-04-09 湖南艾迪奥电子科技有限公司 一种陶瓷电容器浆料的制备装置
CN114988823A (zh) * 2022-07-26 2022-09-02 上海艺盛实业有限公司 一种干拌混凝土的制备工艺
WO2024113659A1 (fr) * 2022-11-30 2024-06-06 中国水利水电第五工程局有限公司 Système et procédé de mélange de matériau de sol à haute viscosité et à haute teneur en humidité
CN116533390A (zh) * 2023-06-08 2023-08-04 江苏雨泉混凝土有限公司 一种节能型预拌混凝土用的配料装置及配料方法
CN116901248A (zh) * 2023-08-17 2023-10-20 中国二十二冶集团有限公司 混凝土搅拌站全过程绿色生产施工工艺
CN117565236A (zh) * 2023-11-17 2024-02-20 广东省高速公路有限公司 一种集装箱式uhpc搅拌设备
CN118456664A (zh) * 2024-07-11 2024-08-09 中晟(福建)混凝土发展有限公司 一种高精度计量的混凝土配料混匀装置及其方法

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