• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Centrally rotating sweeping screw (10) for a storage silo (1) for agricultural products, such as cereals or grains, comprising a worm (20) and a stationary housing portion (29.1, 29.2, 29.3, 29.4 29.5) relative to the screw, partially wrapping the worm so as to allow free access of agricultural products to the auger on one side of the screw through an opening (200.2, 200.3, 200.4, 200.5) between the fixed portion of the housing and the floor of the silo. According to the invention the housing comprises at least one movable cowl (30) relative to the fixed portion of the housing, between a retracted position, in which the opening is released, and an extended position, in which the hood obstructs the opening .
    公开号:FR3057560A1
    申请号:FR1659955
    申请日:2016-10-14
    公开日:2018-04-20
    发明作者:Lucien Orhand；Guillaume Sauvion；Loic Daguenet
    申请人:Soc Concept Engineering；
    IPC主号:
    专利说明:

    057 560
    59955 ® FRENCH REPUBLIC
    NATIONAL INSTITUTE OF INDUSTRIAL PROPERTY © Publication number:
    (to be used only for reproduction orders) (© National registration number
    COURBEVOIE © Int Cl 8 : B 65 G 65/46 (2017.01)
    PATENT INVENTION APPLICATION
    A1
    ©) Date of filing: 14.10.16. © Applicant (s): SOCIETE CONCEPT ENGINEERING (© Priority: Simplified joint stock company - FR. @ Inventor (s): ORHAND LUCIEN, SAUVION GUIL- LAUME and DAGUENET LOÏC. (43) Date of public availability of the request: 20.04.18 Bulletin 18/16. ©) List of documents cited in the report preliminary research: Refer to end of present booklet (© References to other national documents ® Holder (s): SOCIETE CONCEPT ENGINEERING related: Joint stock company. ©) Extension request (s): (© Agent (s): AVOXA.
    (34) SCREW SCREW FOR SILO.
    FR 3 057 560 - A1 (g /) Sweeper screw (10) with central rotation for a circular silo (1) for storing agricultural products, such as cereals or grains, comprising a worm (20) and a portion of fixed casing (29.1, 29.2, 29.3, 29.4, 29.5) relative to the screw, partially enveloping the worm so as to allow free access of agricultural products to the worm on one side of the screw through d '' an opening (200.2, 200.3, 200.4, 200.5) between the fixed portion of the housing and the floor of the silo.
    According to the invention, the housing comprises at least one movable cover (30) relative to the fixed portion of the housing, between a retracted position, in which the opening is released, and a deployed position, in which the cover obstructs the opening. .
    27.1
    SCREW SCREW FOR SILO
    1. Field of the invention
    The field of the invention is that of storage and handling of bulk materials.
    More specifically, the invention relates to a silo sweeper screw.
    The invention finds particular application in the extraction of agricultural products, such as cereal crops, legumes or oilseeds, at the bottom of silos.
    2. State of the art
    On farms, in agricultural cooperatives, or in transit ports, cereals, grain or granules are often stored in circular silos
    It is known to provide an evacuation hopper in the center of the horizontal floor of a silo, so as to allow gravity flow of the product stored during the emptying of the silo.
    A disadvantage of this technique is that part of the grains on the periphery of the silo are not evacuated by the hopper. This residual quantity of grains at the bottom of the silo, after opening of the hopper, results from the sloping effect, the angle of which depends on the type of product and in particular on the shape of the grains, but also on the ambient humidity which influences on the adhesion of the grains to each other. Thus, to completely empty the silo, it is necessary to shovel the grains, which is laborious and can be dangerous for people entering the silo, or to use a mechanical motorized device.
    It is thus known to implement a motorized Archimedes screw, commonly called a sweeper screw, which sweeps the floor of a circular silo by rotating around the axis of the silo, to bring the product to be evacuated to a central hatch.
    A drawback of the known sweeper screw techniques is that a jam can occur, which forces the screw to stop to release the Archimedes screw, all the more frequently as the opening of the hopper at the bottom of the silo is small dimension.
    3. Objectives of the invention
    The invention therefore particularly aims to overcome the drawbacks of the prior art mentioned above.
    More specifically, the invention aims to provide a central rotation sweeper screw for circular silo for storing agricultural products not encountering jamming, causing its worm to block, by agricultural products.
    Another object of the invention is to provide such a sweeper screw technique which allows filling of the silo, whatever the stop position of the sweeper screw during the previous sweep.
    An object of the invention is also to provide such a sweeping screw technique which does not block, when a jam occurs at the conveyor belt located under the silo.
    It is also an objective of the invention to propose such a sweeper screw technique which can be implemented in silos of any diameter.
    Another objective of the invention is to propose such a technique which is simple to implement.
    Another objective of the invention is to provide such a technique which is reliable.
    4. Statement of the invention
    These objectives, as well as others which will appear subsequently, are achieved using a central rotation sweeper screw for circular silo for storing agricultural products, such as cereals or grains, comprising a worm and a portion of the casing fixed relative to the screw, partially enveloping the worm so as to allow free access of agricultural products to the worm on one side of the screw through an opening between the fixed portion of the casing and the floor of the silo.
    According to the invention, the housing comprises at least one cover movable relative to the fixed portion of the housing, between a retracted position, in which the opening is released, and a deployed position, in which the cover obstructs the opening.
    Thus, in an unprecedented manner, the invention proposes to implement a casing having at least a portion of fixed casing and a movable portion forming a cover which makes it possible to isolate access to the worm when loading the silo and which allows starting of the vacuum worm in situations where the sweeper was not stopped above the emptying hoppers formed in the floor of the silo during the previous sweeping operation.
    Furthermore, one can on the one hand gradually release the access of agricultural products to the worm by retracting the hood, after a gravity flow during an emptying of the silo, to sweep the residual slope of products.
    On the other hand, one can also obstruct this access to isolate the worm, in an empty silo before loading.
    In addition, when the movable cover is in the deployed position and obstructs the opening between the fixed portion of the casing and the floor of the silo, it prevents agricultural products from accessing the worm, and the efforts on the worm motor. endless when starting without load are reduced, which preserves the life of the engine.
    It should be noted that, in the context of the invention, the portion of the fixed casing can extend over the entire length of the worm or extend only over part of it, and that consequently , the opening between the fixed casing portion and the floor can extend over the entire length of the worm or extend only over part of it.
    According to an advantageous embodiment of the invention, the sweeping screw comprises motorized actuation means of the movable cover between the retracted position and the deployed position.
    According to a particular embodiment of the invention, the actuation means comprise a jack and means for transforming a translational movement of the jack into a movement of rotation of the cover.
    According to a preferred embodiment of the invention, the transformation means are formed of a control shaft comprising return levers, each return lever actuating a link secured to the cover.
    A simple, reliable and low-cost control mechanism is thus obtained.
    According to a particularly advantageous embodiment of the invention, the sweeping screw is formed of a plurality of aligned modules assembled two by two each having a fixed casing portion, at least one of the modules being a specific module of a suitable length so that the sweeping screw extends over a distance substantially equal to the interior radius of the silo.
    Thanks to this modular design, it is easy to manufacture custom sweeping screws, suitable for any silo diameter.
    Advantageously, standard modules of identical lengths, for example 3 m in length, and a module of specific length can be combined.
    Furthermore, it is possible to directly use sheets of raw material without making cuts, simply by shaping them to manufacture the standard modules, which substantially reduces the manufacturing costs of the sweeping screw.
    In addition, mass production of standard modules reduces manufacturing times.
    According to a particular embodiment of the invention, at least two of the modules include a movable cover and in that the actuation means of each of the covers are independent of each other, so as to be able to obstruct or release independently of the opening between the fixed casing portion of each module and the floor of the silo.
    Thus, it is possible to release each opening independently of each other.
    According to an advantageous embodiment of the invention, the module located at the proximal end of the worm does not include a movable cover.
    Thus, in the event of blockage at the level of the central hopper in the silo's funnel, located under the motor at the proximal end of the worm, the excess agricultural product entrained by the worm can spill into the silo by the permanent opening formed between the floor and the fixed portion of the module housing located at the proximal end.
    According to a particularly advantageous embodiment of the invention, the fixed portion of the module housing located at the proximal end of said worm has a recess configured so as to facilitate the gravity flow of agricultural products through the screw sweeper.
    Thus, the recess offers a greater passage for the grains towards the hopper, which facilitates the flow of the grains during the gravity emptying of the silo.
    According to a particular embodiment of the invention, the specific module is mounted between two modules of identical length.
    5. List of figures
    Other characteristics and advantages of the invention will appear more clearly on reading the following description of an embodiment of the invention, given by way of simple illustrative and nonlimiting example, and of the appended drawings among which:
    FIG. 1 is a view in situation of a sweeping screw according to the invention in a grain silo with circular base; Figure 2 is a perspective view of the sweeper screw presented with reference to Figure 1, when its covers are in the retracted position;
    Figure 3 is a perspective view of the sweeper screw presented with reference to Figure 1, when its covers are deployed;
    Figure 4 is a detail view of a control element of one of the covers presented in Figures 2 and 3;
    FIG. 5 is a detailed view of a guide element of a cover presented in FIGS. 2 and 3.
    6. Detailed description of the invention
    6.1. Example of embodiment of the invention
    In FIG. 1, an exemplary embodiment of a sweeping screw 10 according to the invention is fitted to a grain storage silo 1, the base of which is circular.
    In this grain silo 1, the sweeping screw 10 rests on a floor 2 through which are mounted a central funnel hopper 3 and three substantially aligned peripheral mouths 4, intended to allow the flow of grains to the lower level of silo 1 .
    At the lower level, one finds substantially vertically the mouths 4 and the flow funnel a conveyor (not shown) which evacuates the grains towards the outside of the silo in order to load a truck or a boat, when the mouths 4 and / or the hopper 3 are open. This conveyor can be, for example, a conveyor belt or an Archimedes screw.
    The sweeping screw 10 is mounted at one end 11 on an axis 12 substantially coaxial with the axis of the circular base of the silo 1 and the flow axis of the hopper 3.
    Thus, the sweeper screw 10 can perform an angular sweep around the axis 12 to sweep the circular base of the silo 1 and evacuate the grains which remain accumulated on the periphery of the silo towards the central hopper 3 and / or the mouths 4.
    As can be seen in more detail in FIG. 2, in a perspective view of the sweeping screw 10 shown alone, this includes a scanning assembly 22 composed of an Archimedes screw 20, making it possible to drive the grains towards the center of silo 1, partially covered with a protective casing 21, having several fixed portions 29.1, 29.2, 29.3, 29.4, 29.5 relative to the worm 20.
    This FIG. 2 shows the sweeper screw 10 in a configuration where the grains have free access, on one side, to the worm 20, via openings 200.1, 200.2, 200.3, 200.4, 200.5 between each portion of fixed casing and floor 2 of silo 1.
    The scanning assembly 22 is carried at its proximal end by a motor unit 23 capable of driving the endless screw 20 in rotation and at its distal end by a motorized wheel 24.
    At the proximal end of the scanning assembly 22, the engine block 23 is mounted on a central pivot (not shown) housed under a protective cover 25. In addition, the shaft of the engine block 23 is coupled by by means of a universal joint to the worm screw 20. Thus, the sweeping screw can rotate around this central pivot, of vertical axis in a substantially horizontal plane despite the variations in flatness of the floor 2.
    At the distal end of the scanning assembly 22, the motorized wheel 24, which supports and guarantees a constant angular advance of the scanning assembly 22, is capped by a protective cover. This advance motorized wheel 24, which is of the squirrel cage type with rubberized rollers, is rotated by an electric gear motor.
    According to variants of this particular embodiment of the invention, the scanning assembly 22 is equipped, depending on its length, with additional feed wheels fixed to the various anchoring structures 26. These additional feed wheels are driven by a shaft secured to the main motorized wheel 24. Thus, these wheels impose a constant angular advance and identical to the different parts of the scanning assembly 22, which makes it possible to limit its torsion when it meets an area where a quantity significant grain has accumulated.
    Furthermore, it can also be seen in FIG. 2 that the scanning assembly 22 is composed of five modules 27.1, 27.2, 27.3, 27.4, 27.5 assembled end to end according to the longitudinal orientation of the sweeping screw. The head module 27.1 is coupled on one side to the universal joint of the engine block 23 and on the other side to three intermediate modules 27.2, 27.3 and 27.4 followed by an end module 27.5, carrying the motorized wheel 24. Each module 27.1, 27.2, 27.3, 27.4, 27.5 comprises a fixed casing portion 29.1, 29.2, 29.3, 29.4, 29.5 relative to the worm 20.
    The upper part of the casing 21 of the head module 27.1 includes a recess 28 which provides a larger passage for the grains towards the hopper 3, in order to facilitate the flow of the grains during the gravity emptying of the silo 1. In addition, in the event tamping at the hopper 3, following a malfunction of the conveyor located under the floor 2, the grains which are swallowed by the worm 20 and transported to the funnel 3, are pushed upwards through the recess 28 .
    To make the sweeper screw 10 of length substantially equal to the radius of the circular base of the silo 1, the modules of identical lengths 27.1 to 27.4 are assembled with the specific end module 27.5, intended to complete the length of the screw.
    In this embodiment of the invention illustrated in FIG. 2, the head module 27.1 is spaced 0.5 m from the center of the circular floor, the modules 27.1 to 27.4 are substantially 3 m long and the module 27.5 has a length of approximately 1.5 m, which makes it possible to sweep almost the entire surface of the floor of silo 1, with an internal radius equal to 14 m, with screw 10.
    This FIG. 3 shows the sweeper screw 10 in a configuration where covers 30 belonging to the casing 21 are deployed and prevent access of the grains to the worm 20 through the opening 200.2, respectively 200.3, 200.4, 200.5 existing between the fixed casing portion 29.2, respectively 29.3, 29.4, 29.5 and the floor 2.
    As can be seen in FIG. 3, each module 27.2 to 27.5 of the sweeping screw 10 is equipped with a removable cover 30, which closes an internal volume around the worm 20, further delimited by the fixed portion of the casing 21 and the floor 2. Thus, access to the worm screw can be obstructed via the openings 200.2, 200.3, 200.4, 200.5 and prevent the grains from entering inside the closed volume around the Archimedes screw 20 For this, each cover 30 is movable and operated by an actuator, such as an electric jack, housed under a protective casing 31.
    FIG. 4 shows a partial perspective view of a module of the sweeper screw, the cover 30 of which is in the retracted position, as in FIG. 2. In this FIG. 4, the fixed portion of the protective casing 31 has been hidden, so that we can see the smallest details of the operating mechanism of the cover 30.
    As can be seen in FIG. 4, the end of the body of the electric actuator 40, on the side of the motor 41, is mounted to rotate freely around an axis of oscillation 42, secured to the protective casing 31. At l 'other end of the cylinder body 40 is mounted a rod coupled by a first axis 43 to a lever 44 fixed on a control shaft 45. On this control shaft 45, held by flanges 401, are also fixed return levers 46. Each return lever 46 is secured to a first end of a link 47 via a second axis 48. The second end of each link 47 is secured to an ear 49 fixed to the cover 30 using a third axis 400. This lug 49 is for example fixed at the edge of the outer lip of the cover 30, which is substantially in contact with the floor 2 when the cover 30 is deployed.
    Thus, when the rod of the jack 40 is extended, the translational movement of the rod of the jack is converted into an angular displacement of approximately 90 ° by the control shaft 45. This angular displacement is transmitted by the shaft of control 45 to the reference levers 46 and then via the rods 47 to the cover 30, which passes from the retracted position to the deployed position.
    FIG. 5 illustrates a detailed view of the assembly area of two contiguous modules 27.2 and 27.3.
    As can be seen in Figure 5, the Archimedes screw 20 is composed of two portions 20.a, 20.b. Each portion 20.a, 20.b is formed of a hub 50 around which a helical helix 51 is wound. These portions 20.a, 20.b are connected by connecting shafts 52. Each connecting shaft 52 is formed of a portion 53 forming a flange extending by a portion 54 forming an axis which is inserted into the hub 50 and is fixed to the latter by bolts 55. The assembly of the two portions 20.a, 20. b of the worm 20 is provided by bolts 56 which keep the two flanges of the two flanges 53 aligned and tight against one another.
    It can also be seen that the axis portion 54 of the shaft 52 passes through a bearing 57, fixed by a plate to the casing 21, which makes it possible to freeze the axial position of the worm 20 in the scanning assembly 22.
    A hinge arm 58 of the cover 30 is pivotally mounted around the axis 54 on a sintered bronze ring and fixed to the cover 30 substantially at its distal end, the furthest from the axis 54. The distal end of the articulation arm 58 has an ear 500 on which the second end of the link 47 of the control mechanism previously described in relation to FIG. 4 is articulated
    6.2. Other optional features and advantages of the invention
    In variants of the embodiment of the invention detailed above, it can also be provided:
    to integrate at the hopper forming a funnel an anti-jamming sensor, such as a mechanical sensor, or even an inductive sensor;
    that the motor of the sweeping screw is a geared motor; that the motorized wheel is replaced by a wheel driven by the rotation of the worm 20 via a belt or chain;
    placing the specific module at any position between two modules of identical length in the scanning assembly;
    that each additional feed wheel be individually motorized.
    权利要求:
    Claims (9)
    [1" id="c-fr-0001]
    1. Sweeping screw (10) with central rotation for circular silo (1) for storing agricultural products, such as cereals or grains, comprising a worm (20) and a portion of fixed casing (29.1, 29.2, 29.3 , 29.4, 29.5) relative to said screw, partially enveloping said worm so as to leave free access of said agricultural products to said worm on one side of said screw through an opening (200.2, 200.3, 200.4, 200.5) between said fixed portion of said casing and the floor of said silo, characterized in that said casing comprises at least one cover movable relative to said fixed portion of said casing, between a retracted position, in which said opening is released, and a deployed position, in which said cover (30) obstructs said opening.
    [2" id="c-fr-0002]
    2. Sweeping screw according to claim 1, characterized in that it comprises motorized actuation means of said movable cover between said retracted position and said deployed position.
    [3" id="c-fr-0003]
    3. sweeper screw according to one of claims 1 and 2, characterized in that said actuating means comprise a jack (40) and means for transforming a translational movement of said jack into a rotational movement of said cover.
    [4" id="c-fr-0004]
    4. Sweeping screw according to one of claims 1 to 3, characterized in that said transformation means are formed of a control shaft (45) comprising return levers, each return lever actuating a link secured to said cover.
    [5" id="c-fr-0005]
    5. sweeper screw according to one of claims 1 to 4, characterized in that said sweeper screw (10) is formed of a plurality of modules (27.1, 27.2, 27.3, 27.4, 27.5) aligned two by two each having a fixed casing portion (29.1, 29.2, 29.3, 29.4, 29.5), at least one of said modules being a specific module of a suitable length so that said sweeping screw extends over a distance substantially equal to the interior radius of said silo .
    [6" id="c-fr-0006]
    6. sweeper screw according to claim 5, characterized in that at least two of said modules (29.2, 29.3, 29.4, 29.5) comprise a movable cover and in that the actuation means of each of said covers (30) are independent from each other, so as to be able to obstruct or release
    5 independently the opening (200.2, 200.3, 200.4, 200.5) between said fixed casing portion of each module and the floor of said silo.
    [7" id="c-fr-0007]
    7. sweeper screw according to claim 6, characterized in that the module (29.1) located at the proximal end of said worm does not include a movable cover.
    [8" id="c-fr-0008]
    8. Sweeping screw according to one of claims 5 to 7, characterized in that said fixed portion of the module housing (29.1) located at the proximal end of said worm has a recess (28) configured so as to facilitate the gravity flow of said agricultural products through said sweeping screw.
    [9" id="c-fr-0009]
    15 9. Sweeping screw according to one of claims 5 to 7, characterized in that said specific module is mounted between two modules (29.1, 29.5) of identical lengths.
    1/5
    30S ^ & °
    4/5
    类似技术:
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    FR2829477A1|2003-03-14|Automatic device for continuous emptying of crates into hopper
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    同族专利:
    公开号 | 公开日
    EP3526147A1|2019-08-21|
    WO2018069592A1|2018-04-19|
    FR3057560B1|2018-10-19|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    FR2517285A2|1981-11-27|1983-06-03|Denis Ets Sa|Screw auger for emptying piles of grain - has adjustable shield to cover thread up to where it enters pile of grain|
    US6039647A|1997-06-09|2000-03-21|Agricultural Building Holdings, Inc.|Grain sweeper device|
    FR2828179A1|2001-08-01|2003-02-07|Denis Ets Sa|Mechanism for emptying silo comprises C-profile beam containing endless screw which rotates about central axis to empty center of silo and is connected to similar outer section to remove remaining material|
    GB2518896A|2013-10-07|2015-04-08|Guttridge Ltd|A sweep auger|
    US20160107849A1|2014-10-21|2016-04-21|Sukup Manufacturing Co.|Floating direct drive sweep assembly|FR3088920A1|2018-11-28|2020-05-29|Morillon|Silo emptying device with adjustable drain screw|
    FR3088921A1|2018-11-28|2020-05-29|Morillon|Device for emptying a silo|
    FR3088922A1|2018-11-28|2020-05-29|Morillon|Silo emptying device especially for explosive atmosphere|
    WO2020109726A1|2018-11-28|2020-06-04|Morillon|Silo emptying device with adjustable height drain screw|
    FR3090608A1|2018-12-21|2020-06-26|Morillon|Silo emptying device fitted with a scraper|
    法律状态:
    2017-10-30| PLFP| Fee payment|Year of fee payment: 2 |
    2018-04-20| PLSC| Publication of the preliminary search report|Effective date: 20180420 |
    2018-10-25| PLFP| Fee payment|Year of fee payment: 3 |
    2019-10-15| PLFP| Fee payment|Year of fee payment: 4 |
    2020-10-06| PLFP| Fee payment|Year of fee payment: 5 |
    2021-10-15| PLFP| Fee payment|Year of fee payment: 6 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1659955|2016-10-14|
    FR1659955A|FR3057560B1|2016-10-14|2016-10-14|SCREW SCREW FOR SILO|FR1659955A| FR3057560B1|2016-10-14|2016-10-14|SCREW SCREW FOR SILO|
    PCT/FR2017/052482| WO2018069592A1|2016-10-14|2017-09-18|Sweeping auger for silo|
    EP17783912.3A| EP3526147A1|2016-10-14|2017-09-18|Sweeping auger for silo|
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