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WO2018122811A1 - Système de chargement mobile pour mélangeurs à béton - Google Patents

Système de chargement mobile pour mélangeurs à béton Download PDF

Info

Publication number
WO2018122811A1
WO2018122811A1 PCT/IB2017/058541 IB2017058541W WO2018122811A1 WO 2018122811 A1 WO2018122811 A1 WO 2018122811A1 IB 2017058541 W IB2017058541 W IB 2017058541W WO 2018122811 A1 WO2018122811 A1 WO 2018122811A1
Authority
WO
WIPO (PCT)
Prior art keywords
loading
silo
dosing
cement
concrete
Prior art date
Application number
PCT/IB2017/058541
Other languages
English (en)
Inventor
Danilo PIZZONE
Michele Salvatore Giuseppe CALI'
Alfio Daniele ATTANASIO
Antonio FICHERA
Original Assignee
Euromecc S.R.L.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Euromecc S.R.L. filed Critical Euromecc S.R.L.
Publication of WO2018122811A1 publication Critical patent/WO2018122811A1/fr

Links

Classifications

    • 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
    • B28C7/0481—Plant for proportioning, supplying or batching
    • B28C7/0486—Plant for proportioning, supplying or batching the plant being mobile
    • B28C7/049—Plant for proportioning, supplying or batching the plant being mobile and broken-down for transport
    • B28C7/0495—Plant for proportioning, supplying or batching the plant being mobile and broken-down for transport with a frame carrying the supplying, proportioning or batching elements, movable between a horizontal transport position and an inclined working position
    • 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
    • B28C7/0046—Storage or weighing apparatus for supplying ingredients
    • B28C7/0084—Storage containers or silos mounted on, or specially adapted for transport by, vehicles; Means for erecting containers or silos

Definitions

  • the invention can be technically applied for industrial plants used to process concrete and similar materials.
  • it concerns a mobile loading system for concrete mixers which is primarily used for loading concrete dumpers or self-loading concrete mixers.
  • a mobile plant allows obtaining concrete with less obstructions and lower costs, compared to a fixed installation.
  • mobile units can be sized depending on the needs of the construction site in order to produce the correct amount of concrete, ensuring at the same time the quality of the final product.
  • the first type of widely employed mobile plants contains self-loading concrete mixers whose use is traditionally limited to the construction site, where it is not convenient to install aggregate loading equipment - both for economic reasons and the available space - though keeping the dosing unvaried.
  • the mixer has, thus, to be moved within the construction site in order to load aggregates and cement, and subsequently adjust the dosage of water and additives. Once all the substances are added, they can be mixed.
  • a further limitation is, therefore, constituted by the fact that the quality of the finished product strictly depends both on the way various loading phases are carried out and on the waiting time.
  • cement dosage is slow, it may leave dust residue, and furthermore requires for the operator to wait until the mixer discharges the contents before proceeding with a new load.
  • Another type of system involves the use of a horizontal cement storage silo to load the mixer, designed to be transported by a 40-foot container and positioned in the construction site by means of a support structure.
  • the horizontal silo does have neither water tanks nor tanks for additives, so these must be positioned on site, requiring further transportation. Furthermore, in order to be filled, the silo must be coupled with a bag breaker, which represents an additional module. All in all, such a solution does not enable the plant to be immediately ready for use, still requiring assembly. Examples of similar applications are described in US3820762, US3029958 and US3313435.
  • US3820762 describes a mobile station, fitted with several units which are detached from each other and may be assembled at the time of use.
  • the central control unit is configured to be completely separate and is transported independently.
  • the station consists of a whole wet central unit, i.e. provided with a mixer, and requires aggregate weighing, as it cannot be used with self-loading concrete mixers.
  • This station therefore, requires long and complex assembly operations to function normally.
  • the provision of a conveyor belt to deliver the mixture from the weighing hopper to the mixer requires digging a hole in the ground in correspondence with the discharge outlet of the hopper.
  • Some problems of these stations are actually related to the increased complexity associated with the maintenance of equipment, such as screw conveyors, thus increasing the risks of a system failure, as well as transport and assembly of individual screw conveyor units.
  • the invention is aimed at overcoming the above-mentioned drawbacks by providing a mobile loading system for concrete mixers, such as dumpers or alike, thus featuring high efficiency and cost-effectiveness.
  • Another object is to provide a mobile loading system for concrete mixers of high versatility and compact size, so as to be mounted virtually anywhere, even in spaces of limited dimensions.
  • FIG. 1 is an isometric view of the system in condition of use
  • FIG. 2 is a front view of the plant of Fig. 1 ;
  • FIG. 3 is a side view of the plant of Fig. 1;
  • FIG. 4 is an enlarged view of a first detail of the plant of Fig. 1;
  • FIG. 5 is a top view of the plant of Fig. 1 ;
  • FIG. 6 is an isometric view of the plant in transport condition
  • FIG. 7 is an isometric view of the plant of Fig. 6 inserted in a container
  • FIG. 8 is a front view of the plant of Fig. 6;
  • FIG. 9 is an enlarged view of a detail of Fig. 7;
  • FIG. 10 is an enlarged view of two further details of the plant of Fig. 1;
  • FIG. 11 is a top view of the plant of Fig. 6.
  • FIG. 1 Drawings illustrate the main, but not exclusive, configuration of a mobile system for concrete loading such as a dumper or self-loading concrete mixer, to be installed on a construction site for the storage and supply of cement to a cement mixer.
  • the system generally depicted in 1, essentially comprises a silo 2 for the storage of cement with a loading inlet 3 and a discharge outlet ), first means 5 for cement loading inside the storage silo 2 through the loading inlet 3, dosing means 6 of the concrete places at the discharge outlet 4 and second means 7 for loading a concrete mixer, adapted to draw the concrete from the dosing means 6 and lift it to a predetermined position to bring it in level with the loading inlet of the mixer.
  • the storage silo 2 is mounted on top of the base frame 8, substantially adapted to be placed on the ground, possibly with the interposition of a concrete plate or other masonry or even without it if a preventive stability verification allows it.
  • the storage silo 2 is hinged to the frame 8 to be raised from a horizontal position, thereby allowing to move in the pipeline to an operative vertical position.
  • Fig. 1 illustrates the system 1 with the storage silo 2 in the vertical position.
  • the silo 2 is supported by a structure 9 hinged to the base frame
  • the dosing means 6 comprise a hopper 11 which is arranged below the discharge outlet 4 of the silo 2 and a dosing device 12 with load cells which is arranged directly below 13.
  • Fig. 3 shows that the hopper 11 is preferably, but not exclusively, fitted with dual discharge outlet to ensure a quick but precise dosing.
  • first discharge outlet with a larger diameter for a more rapid and coarse filling
  • second discharge outlet with a smaller diameter will be used in the final stage for a slower but more precise dosing
  • the hopper 11 is fitted with valves, which are not illustrated, and consist of, for example, a butterfly valve for each of the discharge outlets to enable the selection of the discharge outlet to be used. These valves can be controlled by an electric control panel 14 arranged in a dedicated seat on the base frame 8.
  • vent tube from the dosing unit 12 to avoid increased air pressure, resulting in wrong weight value and dosing error.
  • a protective sheet at the top.
  • the dosing unit 12 will be attached to the support structure 9 of the silo 2 to be able to move integrally in the same stage of the system installation from a horizontal to a vertical operating position.
  • the dosing unit 12 will be integral with the support structure 9 thanks to fixing bolts which will be removed once the silo 2 will be in the vertical operating position, at which the dosing unit 12 will be supported only by the load cells 13, as visible more clearly in Fig.4.
  • the dosing unit 12 may be dimensioned so as to be able to load the amount of cement required to fill a concrete mixer of 5m 3 in one step.
  • the base frame 8 also includes an anchoring structure 15 for a bag breaker 16 which delimits a chamber for pouring cement from the bags.
  • the structure is connected with the first horizontal screw conveyor 17 to transfer the cement from the bag breaker to the first loading means 5.
  • the bag breaker 16 consists of two flanged bodies constituting the hopper that will convey the cement to the horizontal screw conveyor 17 located below.
  • the bag breaker 16 further comprises an upper cover bolted on lower flanges and is also arranged for the installation of a filter to recover volatile material lost during cement bag breakage.
  • the pouring chamber contains a grid, which cannot be seen in the figures, provided with blades to allow breaking the bag and enable pouring of the material.
  • the horizontal screw conveyor 17 is connected to the first loading means 5, so as to allow continuous filling of the silo 2, with no need to wait for the mixer to arrive at the cement storage place for loading.
  • the advantage of the proposed system lies in the division of the manual phase of breaking the bag, which is the operator's responsibility, from the automatic loading into the concrete mixer carried out by the dosing means 6 and the first and second loading means 5, 7.
  • Access to the bag breaker 16 is facilitated by an access ramp 18 formed by two steps and a platform, which will be sized to allow the operator to obtain the grid at pelvis height for comfortable breaking of cement bags.
  • the base frame 8 also contains a water tank 19 functioning as an accumulator tank, fitted with level indicators, and additive tanks 20 for the dosing of additives, as shown in Fig.5.
  • This figure also illustrates that the silo 2 is provided on top with a filter 21 for the recovery of cement and with a relief valve 22.
  • the system 1 will be fitted with all the essential components for immediate use, thus ensuring full functionality after a few quick and assembly operations.
  • Fig. 6 illustrates the system 1 in transport configuration where the storage silo 2 is in the horizontal position. In this condition, some parts may be conveniently dismantled, such as the bag breaker 16 with the relative access ramp 18, which will be present on the frame
  • the grid 23 can be mounted when the silo 2 is still in the horizontal position, while the assembly of the bag breaker 16 takes place after the silo 2 has been lifted.
  • the system 1 will have a sufficiently compact configuration to be put in a container 25, e.g. a 40-foot container of the open-top type, as shown in Fig. 7.
  • the transition from the horizontal to the vertical position will be achieved automatically by assemblies connected to the frame 8 and the silo 2, configured to ensure a roto-translational movement of the silo 2.
  • the assemblies comprise a pair of actuators 26 of the hydraulic piston type, each having a fixed end hinged to the frame 8 and one end connected to the base of the storage silo 2, i.e. silo support frame 9, to ensure the roto-translational movement necessary for the transition from the horizontal to the vertical position and vice versa.
  • the actuators 26 will be powered by a hydraulic power unit 27 with non-return valves in order to prevent a possible piston failure once the oil pump stops working.
  • the actuators may be pneumatic, hydraulic, electro -mechanical etc.
  • the support structure 9 of the silo 2 comprises support legs 10 with a vertical fixed section 28 integral to the base frame 8 and a mobile section 29 integral to the storage silo 2 to ensure their movement together with the silo and secure connection to the fixed section 28 when the storage silo is in the vertical operating position.
  • the support structure 9 of the silo 2 is hinged by a pin to the fixed sections 28 of the support legs 10, which are welded to the frame 8.
  • Actuators 26 are hinged at the bottom of the support legs 10.
  • the support structure 9 contains a hinge 30 for the mobile sections 29 of the legs 10 which in the initial stages of lifting the silo move along horizontal guide rails 31 fixed to the frame 8 to ensure that the mobile sections of the legs 29 remain in line, as shown in Fig. 8, and even more clearly in a detail of Fig.9.
  • Such movement may be supported by a steel cable not shown in the figure, which is connected to the mobile sections 29 and will be disconnected after its detachment from the rails 31. Once the mobile sections 29 are in position, they are bolted to the corresponding fixed section 28 located on the frame 8, as shown in the enlarged details of Fig.10.
  • the bag breaker 16 After securing the support structure 9, the bag breaker 16 is positioned on a special anchoring structure 15 provided on the frame 8.
  • the first loading means 5 comprise a vertical screw conveyor 32 whose casing is anchored to the storage silo 2 to rotate both parts integrally in the transition from the horizontal to the vertical position. It will also be in the vertical position while in use. During the assembly, the lower end of the vertical screw conveyor 32 will be connected by a flange to the horizontal screw conveyor 17 to form an integrated loading duct ensuring the transfer of cement from the bag breaker 16 to the loading inlet 3 of the silo 2.
  • the horizontal screw conveyor will be suitably rotated in the transport configuration with a predetermined angle to a horizontal axis that extends longitudinally to the frame 8, for example 6°. Only after vertical positioning of the silo 2 it will be anchored to the vertical screw conveyor 32.
  • the first loading means 5 also comprise an additional vertical delivery pipe 33 to load the silo 2 from a tanker truck.
  • the silo 2 contains a level indicator system 34, while the walls of the double-mouth hopper 11 contain cement fluidification system 35 to ensure that the cement does not consolidate excessively and escape from the valves.
  • a compressor 36 located on the frame 8 supplies air to the nozzles, which are an integral part of the fluidification system 35.
  • the second loading means 7 comprise an additional screw conveyor 37 provided with an inlet 38 to draw the cement from the dosing unit 12 and a discharge outlet 39 to the concrete mixer.
  • the third screw conveyor 37 is hinged to the support structure 23 to rotate around it and bring its inlet 38 below the dosing unit 12 and the outlet 39 to the predetermined position to enable discharge in a concrete mixer.
  • the height of the discharge outlet 39 of the third inclined screw conveyor 37 is adjusted manually by a winch 40 positioned at operator height and locked in position to ensure the transfer from the dosing unit 12 to the inclined screw conveyor 37.
  • the system 1 also comprises pumps to draw water and additives from the corresponding tanks 19, 20 to achieve the predetermined amount of substances for loading in the mixer.
  • the third screw conveyor 37 will be supplied with water and additives from water and additive piping fixed to the screw conveyor 37 and connected to the water tank 19 and additive tank 20 by means of hoses and hose connections.
  • the system enables loading all the main components for the production of the concrete, except for the aggregates. It is compact and easy-to-transport in a single self-contained container which may be easily moved and unloaded, thus saving space on the construction site.
  • Discharge of the components in a self-loading concrete mixer takes less time than discharge in a regular concrete mixer.
  • the first loading means are independent from the second concrete mixer loading means.
  • the system enables automatic control of dosing for the production of concrete, except for the aggregates.
  • the system is fully automated and allows setting different formulas and monitoring realtime and former dosing readings.
  • silo Due to automatic mobile sections, silo may be lifted by easily accessible equipment rather than cranes, thus reducing the time necessary for lifting the silo considerably to have the system ready in a short time.

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  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)

Abstract

L'invention concerne un système de chargement mobile pour mélangeurs à béton, comprenant un silo de stockage (2) de ciment ayant une entrée de chargement (3) et une sortie de déchargement (4), des premiers moyens de chargement (5) du ciment dans le silo de stockage (2) par l'entrée de chargement (3), des moyens de dosage (6) du béton au niveau de la sortie de déchargement (4), des seconds moyens de chargement (7) du mélangeur à béton conçus pour tirer le béton des moyens de dosage (6) et pour le soulever à une hauteur prédéfinie de façon à l'amener à l'entrée de chargement du mélangeur, un cadre de base (8) positionné sur le sol, le silo de stockage mobile (2) étant articulé sur le cadre de base (8) pour être levé de la position de transport horizontale à la position verticale fonctionnelle.
PCT/IB2017/058541 2016-12-30 2017-12-30 Système de chargement mobile pour mélangeurs à béton WO2018122811A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT102016000132658 2016-12-30
IT102016000132658A IT201600132658A1 (it) 2016-12-30 2016-12-30 Impianto di caricamento mobile per betoniere

Publications (1)

Publication Number Publication Date
WO2018122811A1 true WO2018122811A1 (fr) 2018-07-05

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Application Number Title Priority Date Filing Date
PCT/IB2017/058541 WO2018122811A1 (fr) 2016-12-30 2017-12-30 Système de chargement mobile pour mélangeurs à béton

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WO (1) WO2018122811A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109986696A (zh) * 2019-03-26 2019-07-09 山东省路桥集团嘉兴杭州湾绿色养护有限公司 一种多功能立式绿色环保水泥稳定土冷再生拌和站
CN113715174A (zh) * 2021-09-10 2021-11-30 洛阳腾飞建材有限公司 一种混凝土生产设备
CN115922919A (zh) * 2022-12-19 2023-04-07 中建八局第一建设有限公司 一种用于混凝土拌合站的配料装置
CN117819097A (zh) * 2024-01-24 2024-04-05 中国建筑第二工程局有限公司 一种具有抑尘功能的工地施工用垃圾清运车

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3029958A (en) * 1956-10-08 1962-04-17 Harold W Ruby Portable cement silo
US3313435A (en) * 1965-08-09 1967-04-11 Welk Brothers Metal Products I Portable storage loading and unloading bin
US3820762A (en) * 1971-06-23 1974-06-28 Robacks Medaniska Verkstad Bos Mobile concrete station
DE3301429A1 (de) * 1982-09-08 1984-07-19 Elba-Werk Maschinen-Gesellschaft Mbh & Co, 7505 Ettlingen Betonbereitungsanlage mit integrierter steuerung
FR2718668A1 (fr) * 1994-04-19 1995-10-20 Bingler Albert Centrale à béton transportable.
EP2502855A1 (fr) * 2011-03-24 2012-09-26 FEHR Groupe Silo à béton sec

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3029958A (en) * 1956-10-08 1962-04-17 Harold W Ruby Portable cement silo
US3313435A (en) * 1965-08-09 1967-04-11 Welk Brothers Metal Products I Portable storage loading and unloading bin
US3820762A (en) * 1971-06-23 1974-06-28 Robacks Medaniska Verkstad Bos Mobile concrete station
DE3301429A1 (de) * 1982-09-08 1984-07-19 Elba-Werk Maschinen-Gesellschaft Mbh & Co, 7505 Ettlingen Betonbereitungsanlage mit integrierter steuerung
FR2718668A1 (fr) * 1994-04-19 1995-10-20 Bingler Albert Centrale à béton transportable.
EP2502855A1 (fr) * 2011-03-24 2012-09-26 FEHR Groupe Silo à béton sec

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109986696A (zh) * 2019-03-26 2019-07-09 山东省路桥集团嘉兴杭州湾绿色养护有限公司 一种多功能立式绿色环保水泥稳定土冷再生拌和站
CN113715174A (zh) * 2021-09-10 2021-11-30 洛阳腾飞建材有限公司 一种混凝土生产设备
CN115922919A (zh) * 2022-12-19 2023-04-07 中建八局第一建设有限公司 一种用于混凝土拌合站的配料装置
CN117819097A (zh) * 2024-01-24 2024-04-05 中国建筑第二工程局有限公司 一种具有抑尘功能的工地施工用垃圾清运车

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