• 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:

    公开号:NL2011224A
    申请号:NL2011224
    申请日:2013-07-26
    公开日:2014-03-12
    发明作者:Vojtech Zencak
    申请人:Zenc Kov；
    IPC主号:
    专利说明:

    Magnetic lifting device Technology field
    Technical design involves a lifting device with permanent magnets capable of magnetically attaching ferrous parts in active state and release the same ferrous parts when inactivated.
    Current state of the art
    Known lifting devices with permanent magnets contain a stator, consisting of two separate parts - left and right half, whereas these halves represent the imaginary magnetic poles - north and south. Upon basic coarse machining and upon installation of expansion inserts, these two parts are welded using non-magnetic material. Upon welding this stator must be once again machined into design shape, increasing the labor requirements of the product - together with welding.
    From WO 99/65644 a lifting device is known, consisting of a stator and rotor, whereas the stator consists of a machined monobloc. This stationary monobloc has two slots machined on the outer surface under certain angle, into which permanent magnets of the stator are inserted, creating a magnetic field between the stator - rotor and the attached ferrous part (e.g. workpiece being transported). Disadvantage of this design lies in the fact that two slots must be machined on the outside of the stator for installation of the permanent magnets, whereas subsequently these two slots must be laboriously filled including the surface of the stator for final surface treatment or must be fitted with cover.
    The basis of the technical design
    The above disadvantages are eliminated to a significant degree by magnetic lifting device as proposed, consisting of a stator body with permanent magnets, where the stator body is a monobloc made of magnetically conductive material, with an opening in the body of the stator for installation of rotor, where the rotor is controlled between the active and inactive position by control lever and whereas a sliding lifting eye is associated with a stator body. The basis of the technical design is based on the fact that there are cells on the inside of the opening for rotor in the body of the stator, dividing the stator body in two parts - two poles for generation of magnetic field. Permanent magnets of the stator are in- stalled in these cells. As the stator body is a monobloc, the cells on the outside and/or inside surfaces are connected by bridges of the remaining monobloc material. The design of the bridges, their number and cross-sections are designed considering the performance parameters of the lifting device and the properties of the materials used to generate the magnetic field of the lifting device.
    In active status this magnetic lifting device transports ferrous parts from one place to another. To prevent unwanted release of the parts being transported, in addition to the basic locking of the rotor position in the active position, mechanically by control lever, securing clamp and control latch, there is another means of active mechanical locking according to the advantageous technical design. The said securing is realized by making two holes in the body of the stator, into which the end parts of the sliding lifting eye in the shape of a horseshoe are inserted. The holes made on the surface of the workpiece gripping area on the stator body have diameter larger than the diameter of the holes on the upper surface of the stator body, i.e. holes into which the sliding lifting eye is inserted. A locking bushing is inserted in each larger through hole in the direction from the workpiece gripping surface, with a leading edge on its outer diameter, whereas the said locking bushing is fixed to the face side of the end parts of the sliding lifting eye. Two locking slots and two relieving slots are made on the rotor placed inside the stator. Locking balls are engaged in the locking slots when the lifting device is activated. Locking balls are partially engaged in the relieving slots when the lifting device is inactivated.
    The advantage of this technical design is the simplicity of the manufacturing and cost saving in the manufacturing of stator, simple attachment of the permanent magnets of the stator in the cells. The additional locking of the rotor by means of the movement of the suspension eye and locking ball significantly increases the stability of gripping and thus work safety.
    Overview of the figures in the drawings
    The technical design is clarified on the attached drawings that depict: fig. 1 - perspective view of the lifting device fig. 2a - perspective view of the lifting device stator body fig. 2b - front view of the stator body from fig. 2a fig. 2b - view A of the stator body from fig. 2b fig. 3a - cross-section A - A across the sliding lifting eye, stator and rotor in fig.l with rotor of the lifting device unlocked fig. 3b - longitudinal cross-section B - B through sliding lifting eye, stator and rotor as per fig.l fig. 3c - view of detail A from fig. 3a fig. 4a - cross-section A - A across the sliding lifting eye, stator and rotor in fig.l with rotor of the lifting device locked by two locking balls fig. 4b - longitudinal cross-section B - B through sliding lifting eye, stator and rotor as per fig.l fig. 5 - perspective view of the rotor with locking and relieving slots fig. 5a - rotor elevation fig. 5b - cross-section A-A- through fig. 5a Examples of design
    Magnetic lifting device 100 (fig.l through 5b) consists of body 1.1 of stator 1, whereas in the body 1.1 permanent magnets _5 are placed. Inside the body 1.1 of the stator 1 there is a rotor 2_ with permanent magnets A_. Body 1.1 is connected with sliding lifting eye 1_ in the shape of horseshoe with associated locking bushing 2_0. Activation / inactivation of the magnetic lifting device 100 is provided by control lever _3 through part 2.4 of the rotor 2, extending beyond the body 1.1 of the stator ^1.
    The body 1.1 of stator 1 (fig. 2 through 2c) consists of a single whole - a monobloc made of soft magnetic iron.
    This body 1.1 has a base 1.2 of rectangular shape, comprising surfaces 1.3, by which ferrous workpieces 2_2, are gripped when the lifting device is activated. On the left and right longitudinal side of the body 1.1 of stator 1 there are to opposite oblique surfaces 1_1, 1_2. Between the oblique surfaces 1_1, _12 there is part 1_3, where sliding lifting eye is sliding and attached 1_. Inside the body 1.1 of the stator 1 there is a hole 1.4 for the stator 2. On the outside of the holel.4 for the stator 2 there are (milled) cells 14_, whereas these cells b4 are milled across auxiliary holes 14.1. In the cells JL4 permanent magnets _5 of the stator 1 are located. The cells 1_4 and auxiliary holes 14.1 divide the body 1.1 of stator 1 in two parts!8, 19 - two poles - hypothetical magnetic poles N (north) and S (south) generating the magnetic field. These two parts 1_8, 1_9 are connected on the outside surfaces 2_1, alternative on the surfaces inside the body 1.1 of stator 1 by bridges JL5 of the remaining material. These bridges the bridg-es!5 - their number and cross-sections are designed considering the performance parameters of the lifting device and the properties of the materials used to generated the magnetic field of the lifting device.
    Rotor 2 (fig. 5 through 5b) contains two slots 2.1 for placement of permanent magnets 4_ of rotor 2. These two slots 2.1 are made opposite the cells 1_4 machined in the body 1.1 of the statorl. These two slots 2.1 are separated by rotor bridge 2.2 (fig.5). In the magnetic lifting device 100 the arrangement of permanent magnets _4 and _5 as showed in fig. 3a and 4a. On the outer diameter 2.6 of the rotor 2 in part where rotor bridge is located 2.2 there are two opposite locking slots 2.3 for engagement of locking balls _6 when the magnetic lifting device is inactivated (figs. 4a, 5, 5a, 5b). These locking slots 2.3 are set with respect to the axis of the permanent magnets 4_ of the rotors at an angle of approximately 90° . (Fig. 3a). To prevent damage of the outside diameter 2.6 of the surface of rotor 2 by locking balls _6 when the lifting device 100 is inactivated, on the outside diameter 2.6 of rotor 2 there are to opposite relieving slots 2.31. These relieving slots 2.31 are offset with respect to the locking slots 2.3 by an angle of about 10 to 20°. These relieving slots 2.31 are not used for locking of the movement of rotor 2 when the lifting device is activated but when the lifting device is inactivated (fig. 3a), the locking balls _6 may be partially engaged by the relieving slots 2.31. The function of these balls _6 will be described next. In part 2.4 of the rotor 2 extending beyond body 1.1 of the stator 1 there is a through hole 2.5, with suspended control lever _3. The control lever _3 is used to ac-tivate/inactivate of the magnetic lifting device. Locking of the control lever _3 of rotor 2 is performed by known means, using the locking clamp _8, attached to the body of stator 1.
    By partially pulling the lever _3 in the through hole 2.5 latch 10 is disengaged from the locking clamp and subsequently the control lever may be moved, the same applies to both end positions of activation and inactivation.
    Between the oblique surfaces 1_1, _12 of the body 1.1 there is a part 13_f with two holes 1_6, 16.1, engaging the end parts 7.1 of the sliding lifting eye 1_. These two through holes 1_6, 16.1 are of different diameter. The holes 1_6, used to engage the end parts 7.1 in the body 1.1 of stator 1 have smaller diameter than the diameter of holes 16.1 made from the surfaces 1.3, to which the ferrous part 22_ is gripped. Locking bushing 2_0 is inserted in each larger through hole 16.1 from the surface 1.3 for gripping of workpiece. On the outer diameters of the locking bushings 2_0 there is a leading edge 20.1. This leading edge 20.1 is used to shift the locking balls _6 located in the space between the outside diameter of the locking bushings 2_0 and the outside diameter of 2.6 rotor 2. Inside diameter of the locking bushings 2_0 guide the ends 7.1 of the sliding lifting eye These locking bushings 2_0, following the installation in the larger through hole 1_6 are fixed with the face side 7.2 of the ends 7.1 of the sliding lifting eye 1_ and are subsequently blinded to provide a solid surface 1.3 for gripping of workpiece. On locking bushings 2_0 there is a recess 2 0.2, for spring 11_. This spring 1_7 facilitates the return of the sliding lifting eye 1_ in the initial position, i.e. in the position where the lifting device is not transporting load and is inactivated.
    Description of the function of activation/inactivation of the lifting device and locking of the rotor movement and movement of the sliding lifting eye.
    Before gripping the workpiece:
    The control lever _3 is locked on one side of the locking clamp Q_ (fig.l) and the locking bushings 2_0 with sliding lifting eye 1_ in the basic position and locking balls 6 are locked in the area above the leading edge 20.2 of the locking bushing 2_0 (fig. 3a) . Permanent magnets of stator and rotor 4_, _5 are arranged in such a way that the magnetic field is generated only between the stator and rotor. (Fig. 3a)
    Gripping of workpiece:
    For gripping of the ferrous workpiece 22_ the control lever is released from the first latch 1_0 and moved by about 150 - 17 0° into second position engaging the second latch 1_0 of the locking clamp _8. This changes the polarity of rotor with respect to the stator, generating the magnetic field across the ferrous workpiece 22^ where it remains gripped at the surface 1.3 of the lifting device 100 and may be transported to another position. As soon as the load is gripped to surface 1.3 and as soon the lifting is initiated by the sliding lifting eye 1_, the sliding lifting eye 1_ is slightly moved in axial direction together with locking bushings 2_0. Upon completion of the axial movement, the locking bushings 2_0 come into contact with surface 16.12 created by diameter 16.1 and 1_6. By this defined movement over hole 16.1, the locking bushings 2_0 with their leading edges 2 0.1 move the locking balls _6 from the space above leading edges 20.1 (fig. 3a) into locking slots 2.3 on rotor 2_ (fig. 4a) . This enables locking of rotor 2_ preventing voluntary undesirable disengagement of the control lever _3. When the locking balls _6 are engaged in the slot 2.3 on rotor 2_, the control lever cannot be moved 3^.
    Releasing the ferrous workpiece:
    To inactivate the lifting device, i.e. to release the ferrous workpiece 2_2 engaged by the surface 1.3 it is first necessary to apply pressure on the sliding lifting eye 1_, which - together with locking bushings 2_0 is axially shifted over hole 16.1 into the basic position (obr.3a). By this axial shifting, the locking balls _6 are disengaged from the locking slots 2.3 on rotor 2_ (fig. 4a) and are pushed out into the space above the leading edges 20.1 of the locking bushings 20. The prevent damage to the outside diameter of the 2.6 rotor surface 2_ by disengaged locking balls _6, these balls may be partially engaged by the relieving slots 2.31. Upon this release of the locking balls _6 from the locking slots 2.3 the control lever 3^ may be rotated by 170 0 into the initial position before griping of the workpiece (fig.l) thus changing the polarity of the stator with respect to the rotor and the magnetic field across the ferrous workpiece 22_ is eliminated, thus disengaging the ferrous workpiece.
    权利要求:
    Claims (3)
    [1]
    A magnetic hoisting device (100) with permanent magnets, consisting of the body (1.1) of the stator (1) with permanent magnets, the body (1.1) of the stator (1) being designed as a monobloc of magnetically conductive material; in the opening (1.4) of the body (1.1) of the stator (1) the rotor (2) is placed, operated by an operating lever (3), and with a sliding lifting eye (7) on the stator (1) is allocated, characterized in that from the inside of the opening (1.4) for placing the rotor (2), the chambers (14) are formed in the body (1.1) of the stator (1), which the body (1.1) of divide the stator (1) into two parts (18, 19) - two poles -; the permanent magnets (5) of the stator are placed in said chambers (14), the chambers (14) being connected on the outer and / or inner surfaces (20) by the bridges (15) of the residual material.
    [2]
    A magnetic hoist according to claim 1, characterized in that the shape of the bridges (15), the number and cross sections thereof, taking into account the performance parameters of the hoist and the properties of materials - used to make the magnetic circuit of the hoist - be chosen.
    [3]
    Magnetic lifting devices according to claims 1 and 2, characterized in that two openings (16, 16.1) are made in the body (1.1) of the stator (1), through which the end parts (7.1) of the sliding lifting eye (7) lead, the openings (16) through which the end parts (7.1) are introduced into the body (1.1) of the stator (1) have a smaller diameter than the diameter of the openings (16.1) made from the surface of the plane (1.3) ) to which the iron member (22) is mounted; the detent bushes are laid (20) in the openings with a larger diameter (16.1) and the run-on edges (20.1) are made on their outer diameters, the detent bushes (20) being firmly connected to the end parts (7.1) of the sliding lifting eye (7); two locking grooves (2.3) and two relief grooves (2.31) are made on the outer diameter (2.6) of the rotor (2), the locking balls (6) being pushed into the locking grooves (2.3) when the magnetic hoisting device is in the active state, and the detent balls (2.3) are slid into the relief grooves (2.31) when the magnetic hoisting device is deactivated.
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    同族专利:
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    SK500812013U1|2013-12-02|
    NL2011224C2|2015-07-29|
    DE202013103436U1|2014-10-28|
    SK6775Y1|2014-05-06|
    CZ24632U1|2012-11-29|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    JPS4734963U|1971-05-14|1972-12-19|
    WO1999065644A1|1998-06-15|1999-12-23|Tecnomagnete S.P.A.|Manually controlled magnetic anchoring device|
    WO2011097761A1|2010-02-12|2011-08-18|索璞磁性科技（上海）有限公司|Permanent magnetic lifting device|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    CZ201226656|2012-09-10|
    CZ201226656U|CZ24632U1|2012-09-10|2012-09-10|Lifting magnetic device|
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