• 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:
    Leveling assembly (1) comprising a top part (3) for attachment to a machine and a sub part (2) for contact against a foundation (31). The lower part (2) comprises a housing (4) and a sealing blank (5) inserted in the housing (4). The lower part (2) comprises a weighing cell (6), with an actuating surface (7) and an opposite facing surface (8). The weighing cell (6) is located in the housing (4) and in the sealing blank (5) in the lower part (2). A power transmission assembly (11) comprises a lower end surface (12) and an oppositely located upper end surface (13). The lower end surface (12) is located in a region between the lower surface of a spindle (9) facing the lower part (9) and the actuating surface (7). The end surface (12) forms abutment on the actuating surface (7) of the weighing cell (6) or the lower surface (8) of the weighing cell (6). Hereby registration of the weight can be established.
    公开号:DK201470738A1
    申请号:DKP201470738
    申请日:2014-11-26
    公开日:2016-01-18
    发明作者:Tomas Hecht Olsen
    申请人:Ngi As；
    IPC主号:
    专利说明:

    Levelingqqqqqrqat meet weigh cell
    The inventor's son relates to a low level leaching aggregate, which comprises one top portion to the steak beer island in an oat agglomerate such as one machine ©, and a subpart to contact against a foundation such as a floor, and the lower part comprising a housing and a sealant inserted into the housing, and the top part includes a spindle.
    From US Patent No. 5881533 a machine foot comprising a weighing cell is known. However, the machine foot in the aforementioned writing is unsuitable for use in areas where high hygiene requirements are applicable, among other things. due to the complicated structure with many visible and exposed components, just as it is unsuitable for use in an earthquake area. The machine base is also specially designed to be mounted on packing machines for cigarettes.
    It is thus the object of the present invention to provide a leveling assembly which does not have the disadvantages listed or which at least provides a useful alternative to the prior art.
    This is achieved with a leveling assembly of the introduction stated in the introduction and wherein the lower part further comprises a weighing cell, with an actuating surface and an oppositely situated surface, which weighing cell is located in the housing and in the sealing blank in the lower part, and that a power transmission unit is provided with a lower end surface and an oppositely situated upper end surface, said lower end surface being located in a region between the lower surface of the spindle facing the lower part and the actuating surface, said lower end surface being adapted to form abutments with the weighing cell's activating surface or the weighing cell's lower surface, at which the activating surface is arranged to be enabled.
    When the machine mounted on the machine foot is weighted, the pressure will be transferred to the machine foot and the spindle will be pressed downwards. This pressure is transmitted via the PTO to the weighing cell. The force will either directly affect the actuating surface, which occurs when this face faces the unit or indirectly when it is the opposite surface of the weighing cell that has contact with the power transmission unit. In this case, the load cell activating surface will face the foundation and have abutments thereto, and in case of force exertion, the activating surface will press against the foundation and give rise to an impact on a registration cell belonging to the weighing cell. The invention can also be used for a pressure equalization of differently loaded machine feet, with each machine foot in a complex having a weighing cell mounted as indicated. The force from each machine foot is recorded and compared in a recording unit and if there are unacceptable differences, a pressure equalization will take place so that each machine foot carries the same weight. The weighing cell may be a weighing cell connected to a wiring recording device or it may be a wireless device.
    By activating surface is meant the surface of a weighing cell which, by a force effect of the surface, gives rise to an electrical signal which can later be converted into a force value. The actuating surface is located in the lower part. The weighing cell is encapsulated in a sealing blank preferably made of a polymeric material such as a rubber mass. The lower end face of the PTO itself is also located in the lower part, while the opposite end face lies outside the lower part and either with abutment against the lower surface of the spindle or with a definite threaded piece which goes up into the spindle itself and is screwed into it by engagement with an inner part. threads in the spindle.
    In a further convenient embodiment according to claim 2, at least one of the surfaces comprising the lower end surface of the PTO or the surface on which the PTO forms abutment is substantially planar or convex to the opposing surface.
    This helps to achieve a well-defined pressure range for the pressure transfer, while at the same time allowing an inclined position of the machine foot, without compromising the accuracy of the measured weight. Typically, the face of the weighing cell with abutment against the lower face of the PTO is substantially planar or slightly convex in the direction of the PTO.
    In a further convenient embodiment according to claim 3, there is a first cavity in the region between the sealing blank and the plant between the power transmission unit and the weighing cell, which cavity surrounds at least the contact area that is between the weighing cell and the power transmission unit.
    This provides a clearance which allows movement between the surface of the weighing cell and the contact of the pressure transfer unit to the weighing cell, without the embedding mass / sealant counteracting the movement and in this way could give rise to a false weight result. The cavity is preferably annular in that the weighing cell is most often cylindrical. However, the cavity may take other forms such as square, etc.
    In a further convenient embodiment according to claim 4, the lower end surface of the PTO is convex or concave towards the abutment surface against the weighing cell.
    This geometry ensures that the surface can tilt towards the surface of the weighing cell so that when the machine foot is inclined, a correct pressure transfer to the weighing cell continues.
    In a further convenient embodiment according to claim 5, the power transmission assembly is upper end surface in connection with a portion of the spindle.
    By connection, it is understood that the upper end surface is either in direct contact with the spindle or that the upper surface is at least embedded in the spindle, which is the case when the PTO comprises a rod-shaped threaded piece screwed into a threaded cavity in the spindle. spindle.
    A close connection is achieved between the two separate units, whereby the power is transmitted directly.
    In a further convenient embodiment according to claim 6, the power transmission assembly comprises a bolt head, said bolt head comprising a protruding member opposite to the lower end surface, said protruding member communicating with the spindle and the bolt head being disposed in the lower part.
    This provides a connection between the upper part and the lower part, at the same time as a unique power transfer can take place to the weighing cell.
    In a further convenient embodiment according to claim 7, the PTO is a bolt head with a protruding part as a pin, or the PTO is a bolt comprising a bolt head and a bolt head portion with an outer thread engaging an internal thread in the spindle.
    In the case where the PTO merely comprises a bolt head having a smaller protruding part, this protruding member will have a surface which is substantially congruent with the end surface of the spindle, as this pin is not enclosed by the spindle, as is the case when protruding party includes a thread. The pin helps to ensure a good system between the lower part and the top part without the two parties being firmly connected to each other. At the same time, a good power transmission to the weighing cell is also obtained. In the case where the protruding member comprises a thread, a fixed connection between the top part and the bottom part is obtained.
    In a further convenient embodiment according to claim 8, there is arranged between the housing and the spindle a sealing body such as an O-ring, which O-ring surrounds a part of the outer periphery of the PTO located outside the housing.
    A close connection is achieved between the top part and the bottom part, which is important in areas with a high hygiene standard.
    In a further convenient embodiment according to claim 9, there is at least one other cavity between the sealing member and the inner surface of the housing and at its periphery the sealing member comprises an annular lip for sealing against the foundation. The second cavity is located in the region lateral to the periphery of the weighing cell at the bottom of the lower part. By ensuring that there is no casting mass in this area, the power detection is not impeded. Had there been a polymeric material with high resistance to pressure such as the molding mass which otherwise surrounds the weighing cell, it would cause the weighing cell not to be affected corresponding to the pressure on the machine foot and the weighing result would thereby be incorrect. Alternatively, the second cavity may be filled with a soft polymer which does not resist pressure. The annular lip ensures that no dirt can diffuse into the structure and that the amount of bacteria is reduced.
    In a further convenient embodiment according to claim 10, the radially pointing faces of the weighing cell are shape complementary with internal faces of the sealing member, and that at least a portion of the outer radially pointing faces of the weighing cell is in direct contact with the sealing member.
    This ensures that the weighing cell is stuck in the lower part by friction between its walls and the sealant.
    In a further convenient embodiment, the weighing cell is formed with a protruding central portion disposed on the actuating surface, which central portion abuts against a central region of the lower surface of the PTO or foundation.
    In a further aspect of the invention, the machine foot comprises that all seals in the machine foot are FDA approved NBR rubber material.
    In a further aspect of the invention, the machine foot comprises that the sealing member is a polymeric material such as a rubber attached to the housing by vulcanization.
    This ensures that the adhesion of the polymeric material to the housing is optimal, just as the adhesion reduces the penetration of dirt and bacteria into the machine foot via the bottom thereof.
    In a further aspect of the invention, the machine foot comprises that all metal parts have direct metallic contact under pressure.
    This ensures that there is the same electrical potential in all metal objects, which reduces the risk of sparks.
    In a further aspect of the invention, the machine foot comprises an anti-friction disc disposed between the housing and the spindle.
    Hereby it is obtained that the spindle can be moved relative to the housing without the risk of the metal in contact between the two parts being torn.
    The invention also relates to the use of the aforementioned machine foot in locations with high hygiene requirements such as food processing or medicine manufacturing locations.
    Furthermore, the invention also relates to the use of the machine foot in areas at risk of earthquakes.
    The invention will now be explained in more detail with reference to the drawing, in which
    FIG. Figure 1A shows a sectional view of a first embodiment of a machine foot according to the invention comprising a top part and a lower part.
    FIG. Figure 1B shows a sectional view of the machine foot shown in Figure 1 resting on an inclined foundation
    FIG. Figure 2A shows a sectional view of another embodiment of a machine foot according to the invention comprising a top part and a lower part.
    FIG. Figure 3A shows a sectional view of a third embodiment of a machine foot according to the invention comprising a top part and a lower part.
    FIG. Figure 3B shows a sectional view of the machine foot shown in Figure 1 resting on an inclined foundation.
    FIG. 4 shows three identical weighing cells in different perspectives for use in a machine foot according to the invention.
    FIG. 5A shows a first embodiment of a power transmission assembly for use in a machine foot according to the invention.
    FIG. 5B shows that in FIG. 5A shows its full length power transmission assembly.
    FIG. 6 shows another exemplary embodiment of a power transmission assembly for use in a machine foot according to the invention.
    FIG. 7 shows a machine foot from the bottom and before a weighing cell is placed in the foot.
    FIG. 8 shows the machine foot shown in the figure from the bottom and where the weighing cell is placed.
    FIG. 9 is a perspective view of a finished assembled machine foot according to the invention.
    Referring to Figures 1A, B; 2 and 3A, B, the leveling assembly 1 according to the invention and hereinafter referred to as a machine foot 1 will be reviewed, the principle difference between the three embodiments being the design of a power transmission assembly 11 and the resulting structural changes for the machine foot 1.
    The figures show the machine foot 1 comprising a top part 3 for fastening in an assembly such as a machine and a sub-part 2 for contact with a foundation 31 such as a floor, and the lower part 2 comprising a housing 4 and a preferably annular sealing blank 5 inserted in housing 4. The sealing blanket 5 partially encloses a weighing cell 6. The top part 3 comprises a spindle 9. Between the top part 3 and bottom part 2, the PTO 11 is inserted. This is shown in Figure 1 as a bolt 23 comprising a bolt head 22 which is the actual part of the transmission of force against the weighing cell 6, the lower end 12 of the bolt head 12 and the central part being the abutment against a surface of the weighing cell 6. This in this case, the surface is the upper surface of the weighing cell: an actuating surface 7, ie the surface which is depressed by a force effect of the weighing cell 6. The surface against which the lower surface 12 of the bolt head 12 has contact, could also be the opposite surface of the weighing cell 6 and here the lower surface 8 ie . that the weighing cell 6 should be turned 180 degrees. The pressure sensing will then take place by the actuating surface 7 pressing against the foundation 31 by a force actuation of the machine foot 1, thereby giving rise to a measurement of a weight which loads the machine mounted on the foot.
    In Figures 1A, B, the power transmission assembly 11 is, as mentioned, formed as a bolt 23 comprising the bolt head 12 as well as a protruding pin 38 in the form of a thread part 24 with an outer thread 18 screwed into the lower part of the spindle 15 comprising a cavity 16 with an internal thread 19 such that the upper end surface 13 of the PTO 11 is located in the internal thread 19 of the spindle 9. Figure 5 A, B shows the PTO 11 used in the machine foot 1 shown in Fig. 1 A, B and the same technical details as presented above. .
    In Figure 2, the PTO 11 is formed solely as a bolt head 22 with a protruding pin 38 and has an upper end surface 13 which is substantially shape complementary to the lower surface of the spindle in the lower portion 15. FIG. 6 shows the PTO 11 used in the FIG. . 2, where the abutment surface 12 of the bolt head 22 against the actuating surface 7 is convex and the abutment face 7 of the weighing cell 6 is essentially point-shaped, and as seen in FIG. 2, the two surfaces can be easily moved relative to each other. by a tilting movement of the machine foot 1. This is relevant when the foundation 31 is inclined and / or subjected to shaking. The power transmission assembly II is typically manufactured in a stainless steel material.
    In Fig. 3, the power transmission assembly is formed with a bolt head 22 and a pin 38, the two head 22 being concave to the actuating surface 7 of the weighing cell 6 which is slightly convex. The two surfaces are essentially shape complementary. Here, too, the two surfaces will be able to occupy different positions - moved - relative to each other, as demonstrated by Figure 3 B, where the machine foot 1 is inclined due to an inclined foundation 31. This causes the two contacting surfaces to be tilted relative to and the surrounding first cavity 14 ensures that movement is not obstructed by the sealing blank 5.
    Thus, the PTO 11 is located between the lower surface of the spindle 9 facing the lower part 2 and the actuating surface 7. The PTO 11 22 comprises the protruding part / pin 38 opposite the lower end surface 12, which protruding portion 38 communicates with the spindle 9, while the bolt head 22 itself is placed in the lower part 2.
    In all embodiments, the bolt head 22 is disposed in the lower part 2.
    The weighing cell 6 used may, for example, be of the mark '' Sartorius.
    As mentioned, the weighing cell 6 is partially enclosed by the sealing blanket 5, which is a suitable rubber mass, so that parts of the periphery of the weighing cell 6 are shape complementary to the sealing blanket 5. Between sealant 5 and weighing cell 6 there are at least two cavities namely a first cavity 14 and a second cavity 28 are both preferably annular. The cavities may assume other geometries depending on the outer surface of the weighing cell. Thus, the cavity may be a square or rectangular cavity. These cavities 14, 28 are provided so that the movements of the weighing cell 6 are not obstructed by the rubber mass such that a correct recording of weight can take place while the rubber mass ensures a close barrier to the surrounding space.
    The first cavity 14 is located in the region between the sealant mass 5 and the contact surface between the bolt head 22 and the actuating surface 7 of the weighing cell 6, while the second cavity 28 is at least located at the base of the housing 4 such that at least part of the base of the weighing cell 6 makes contact with the foundation 31 without the rubber material impeding the force detection. However, the sealing blank 5 comprises at its periphery 29 an annular sealing lip 30 which seals the housing 4 against the substrate 31. However, the lip 30 is so flexible that it does not counteract the movement of the weighing cell 6 and thus does not affect the weighing result.
    In the constructions shown, figure 1A, B; 2; 3A, B, additional cavities 35 are needed, namely over a horizontally located surface 34 vertically displaced relative to the actuating surface 7.
    In the examples shown, the weighing cell 6 is connected to a recording unit via a line 37, but could also operate wirelessly. In cases where the weighing cell 6 is connected to the recording unit via line 37, this line 37 will be packaged in an airtight hose. This protects it against damage.
    An o-ring 20 is located between the lower surface 15 of the spindle 9 and the housing 4 and surrounding the bolt head 22.
    FIG. 4 shows three identical weighing cells 6 in different perspective for use in a machine foot 1 according to the invention. The weighing cell 6 is a cylindrical unit with a protruding portion 26 on which the actuating surface 7 is arranged. The weighing cell 6 can weigh up to 5 tonnes and detects weight changes down to 5 g. The weighing cell 6 is therefore suitable for incorporation into machine feet 1 according to the invention. Thus, the machine foot 1 can be used with great success in process plants where the weighing of a product is essential either during the process itself or as recording the weight of the final product.
    The weighing cell 6 is also suitable for use in machine feet 1, where the machine foot 1 is used to level a machine mounted on the machine feet 1, since a weight difference between the supporting feet of the machine will be recorded and a subsequent correction of the position of the machine feet 1 can be recorded. is established until the weighing cells 6 on the measured machine feet show the same weight distribution.
    FIG. 7 shows a machine foot 1 seen from the bottom and before a weighing cell 6 is placed in the foot 2 and shows a cavity in the sealing blank 5 which is inserted into the housing 4. The cavity is shaped so that there is space for the weighing cell 6 so that it can be placed in the cavity and fits a press fit whereby the friction holds the weighing cell 6 in the housing 4. The aforementioned first 14 and second 28 cavities are provided in the sealing blank 5. However, since these cavities are arranged at and / or parallel to the horizontal surfaces of the weighing cell 6, it does not have significance for the friction between weighing cell 6 and sealing blank 5, the vertical walls of the casting being form complementary to the vertical walls of the weighing cell 6.
    Figure 8 shows a machine foot 1 seen from the bottom in perspective, where the weighing cell 6 is placed in the sealing blank 5 and a conduit 37 exits the weighing cell 6.
    FIG. 9 is a perspective view of a finished assembled machine foot 1 according to the invention and comprising a spindle 9 provided with a threaded cover 36 and the lower part 2 with a weighing cell 6 incorporated.
    All seals in the machine foot are suitably made of FDA approved NBR rubber material.
    All metal parts in the machine foot are suitably in electrical contact as they are either screwed together or have direct metallic contact under pressure and thus have the same potential, thereby avoiding the possibility of voltage differences and consequent possibility of sparks.
    Reference number 1 Level earthing aggregate 2 bottom part 3 top part 4 housing 5 sealing seam 6 vøøøøøøøøll 7 actuating surface 8 opposite flexible øøøøøøøne © 9 spindle beer 10 11 PTO 12 11 'turning end surface 13 11's upper end surface, 14 a first cavity.
    15 part of the spindle (comprising the lower surface and / or a cavity in the spindle) 16 cavity spindle 17 18 outer threads 19 internal threads located in the lower part 20 of the spindle such as an O-ring 21 22 bolt head 23 bolt 24 thread piece, 25 bolt head 26 protruding portion disposed on the center cell of the lower cell on the PTO 28 a second cavity 29 the circumference of the sealing member 30 annular lip 31 the foundation, the outer surfaces of the weighing cell inner surfaces of the sealing member 34 horizontal surface 35 additional cavity 36 thread shield 37 conduit 38 tap
    权利要求:
    Claims (10)
    [1]
    A leveling assembly (1) comprising a top part (3) for attachment to an assembly such as a machine and a lower part (2) for contact with a foundation (31) such as a floor, and the lower part (2) comprising a housing (4). ), and a sealing blank (5) inserted into the housing (4), the top portion (3) comprising a spindle (9) characterized in that the lower part (2) further comprises a weighing cell (6), with an actuating surface (7) ) and an opposite surface (8), the weighing cell (6) being located in the housing (4) and in the sealing blank (5) in the lower part (2), and a power transmission assembly (11) having a lower end surface (12) ) and an opposite upper end surface (13), the lower end surface (12) being located in a region between the lower surface of the spindle (9) facing the lower part (9) and the actuating surface (7), the lower end surface (12) being arranged for forming systems with the actuating surface (7) of the weighing cell (6) or the lower face (8) of the weighing cell (6), at which the actuating surface (7) is arranged to be actuated by a force exerted by the weighing cell (6).
    [2]
    Leveling assembly (1) according to claim 1, characterized in that at least one of the surfaces: the lower end surface (11) of the PTO or the surface (7,8) on which the PTO (7) forms, is substantially planar or convex shaped toward the opposing face.
    [3]
    Leveling assembly (1) according to claim 1 or 2, characterized in that in the region between the sealing blank (5) and the abutment between the power transmission assembly (11) and the weighing cell (6) there is a first cavity (14) surrounding said cavity (14) within it. at least the contact area between the weighing cell (6) and the PTO (11).
    [4]
    Leveling assembly (1) according to any one of the preceding claims, characterized in that the lower end surface (12) of the power transmission assembly (11) is convex or concave towards the abutment surface against the weighing cell (6).
    [5]
    Leveling assembly (1) according to any one of the preceding claims, characterized in that the upper end surface (13) of the transmission unit (11) is in contact with a part of the spindle (15).
    [6]
    Leveling assembly (1) according to any one of the preceding claims, characterized in that the power transmission assembly (11) comprises a bolt head (22), which bolt head (22) comprises a protruding part (38) opposite the lower end surface (12), which protruding part (38) is in communication with the spindle (9) and the bolt head (22) is arranged in the lower part (2).
    [7]
    Leveling assembly (1) according to any one of the preceding claims, characterized in that the PTO (11) is a bolt head (22) with a protruding part (38) as a pin, or the PTO (11) is a bolt (23) comprising a bolt head. (22) and a bolt head portion (38) having an external thread (18) engaging an internal thread (19) in the spindle (9).
    [8]
    Leveling assembly (1) according to any of the preceding claims, characterized in that a sealing body such as an O-ring (20) surrounds a part between the housing (4) and the spindle (9). of the outer periphery of the PTO (11) located outside the housing (4).
    [9]
    Leveling assembly (1) according to any one of the preceding claims, characterized in that there is at least one other cavity (28) between the sealing member (5) and the inner surface of the housing (4), and that the sealing member (5) comprises a circular lip. (30) for sealing against the foundation (31).
    [10]
    Leveling assembly (1) according to any one of the preceding claims, characterized in that the radially pointing faces of the weighing cell (6) are shape complementary to inner faces of the sealing blank (5) and that at least part of the outer radially pointing faces of the weighing cell (6) is in direct contact with the sealant (5).
    类似技术:
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    同族专利:
    公开号 | 公开日
    WO2015197065A1|2015-12-30|
    US20170114943A1|2017-04-27|
    DK178390B1|2016-02-01|
    CN106471306A|2017-03-01|
    EP3161369A1|2017-05-03|
    引用文献:
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    FR2926634B1|2008-01-22|2010-04-09|Ritecs|AXIAL EFFORT MEASURING DEVICE|US10731788B2|2015-08-03|2020-08-04|Ngi A/S|Method for establishing a signal indicative of the pressure-condition in the as contact-surface befitted rubber-elastic body of a machine foot, as well as machine foot with hydrostatic pressure sensor|
    US11051617B2|2016-02-26|2021-07-06|Component Hardware Group, Inc|Telescoping adjustable leg|
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    DK179262B1|2016-08-31|2018-03-19|Ngi As|Seismic leveling unit with partially spherical top and bottom nut as well as application|
    CN109790953A|2016-09-01|2019-05-21|Ngi有限公司|Machinery bed and its manufacturing method with built-in load cell|
    DK179263B1|2016-09-01|2018-03-19|Ngi As|Machine foot with embedded weigh cell and method of production thereof|
    DE102016118046B4|2016-09-23|2020-07-02|Minebea Intec GmbH|Hygienic pendulum foot|
    DK179408B1|2016-11-18|2018-06-06|Ngi As|Locking device for transport protection of leveling unit with integrated weighing cell|
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    法律状态:
    2019-06-14| PBP| Patent lapsed|Effective date: 20181126 |
    优先权:
    申请号 | 申请日 | 专利标题
    DKPA201400333|2014-06-25|
    DK201400333|2014-06-25|
    DKPA201470738A|DK178390B1|2014-06-25|2014-11-26|Leveling unit with weighing cell|
    DK201470738|2014-11-26|DKPA201470738A| DK178390B1|2014-06-25|2014-11-26|Leveling unit with weighing cell|
    EP15745388.7A| EP3161369A1|2014-06-25|2015-06-09|Levelling device with weighing cell and use thereof|
    CN201580030755.9A| CN106471306A|2014-06-25|2015-06-09|There is the levelling device of weighing unit and the application of described adjusting means|
    PCT/DK2015/050151| WO2015197065A1|2014-06-25|2015-06-09|Levelling device with weighing cell and use thereof|
    US15/317,721| US20170114943A1|2014-06-25|2015-06-09|Levelling device with weighing cell and use thereof|
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