• 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:SE1151187A1
    申请号:SE1151187
    申请日:2011-12-13
    公开日:2013-06-14
    发明作者:Gert Hallgren
    申请人:Xylem Ip Holdings Llc；
    IPC主号:
    专利说明:

    1015202530From GB 2,373, 103 a flexural limitation is known.device. However, the bending limiting device shown isonly arranged on the top of the power cable to bebe protected,located at each end of the bending restriction device.and fastened by means of downwardly open spring clampsThe configuration of the device shown is encumbered withthe disadvantage that the spring clamps must be able to slide in axialdirection along the power cable to allow movement between astraight position and a curved position, and in addition willthe power cable to be pulled out of the spring clamps then a bending loadapplied to the power cord. The device shown is thusonly suitable for static bending limitation, without imposedforces.
    Brief description of the objects of the inventionThe present invention aims to eliminatereveal the above disadvantages and shortcomings ofprior art bending limiting devices and thatprovide an improved bending restriction device.
    A basic object of the invention is to providekeep an improved bending restraint device offinitially defined type, which limits the degree to whichthe power cable is bent and which also handles large chargesbending loads, which result from the imposition of an axial loadthe power cord when the power cord is bent.
    A further object of the present inventionis to provide a bending restriction device, whichis easy to manufacture and easy to mount on the elongated,flexible power cable.
    Brief description of the features of the inventionAccording to the invention, at least the basics are achievedthe purpose by means of the initially defined inflectionalthe restriction device, which has the features defined in the1015202530independent requirements. Preferred embodiments of the present inventionthe invention is further defined in the dependent claims.
    According to the present invention there is providedbending limitation device of initially definedtype,said at least two segments of the device are tubular andwhich is characterized in that the bending limitationin the axial direction arranged at a distance from each other when the bendingthe restriction device is in the straight position, and thatthe interconnection arrangement at least partially surrounds onemantle surface of and is connected to each of saidat least two segments.
    According to a preferred embodiment of the presentinvention, the interconnection arrangement consists of aelongated, tubular tube element. In this way, dirt is preventedfrom entering between the bending limiting devicesegments and thus eliminates the risk of solid materialenters the bending restraint device and damagespower cables.
    Additional advantages and features of the inventionis apparent from the other dependent claims and from the following,detailed description of preferred embodiments.
    Brief description of the drawingsA more complete understanding of the above and othersfeatures and advantages of the present inventionwill be apparent from the following detailed descriptionof preferred embodiments with reference to the accompanyingthe drawings, in which:Fig. 1 is a schematic sectional side view of an invention;bending limiting device,Figs. 2-5 are schematic, radially sectioned plan viewsshowing alternative embodiments of interconnectionthe event, and101520253035Figs. 6-9 are schematic sectional side views showing alternatives.native embodiments of a segment of inflectionalthe restriction device.
    Detailed description of preferred embodimentsFigure 1 shows an inflection limitation according to the invention.device, for an elongate,power cable 2,optical cable.generally denoted l, flexibleor such element as a signal cable orThe power cable 2 can, for example, be connected toa submersible machine such as a pump and a stirrer. Belowcomes the bending limiting device according to the inventionto be described in connection with a, not shown, submersiblepump. However, it should be noted that the invention is not limitedto this area of use.
    The bending limiting device 1 comprises in mutualaxial configuration a first end bracket 3, at least twosegment 4 and a first end bracket 3 opposite the second end bracketbracket 5. Thus, the first and the second respectivelythe end bracket of the bending limiting device 1, whereupona plurality of segments 4 are arranged between said end brackets.
    Preferably, the bending limiting device comprises 1eight segments 4 or more.
    In a typical pump application, the first end bracket is 3arranged to be located adjacent to the pump, and the otherthe end bracket 5 is arranged to be located at a distance fromthe pump and be detachably connected to the power cable 2, byfor example to be clamped around the power cable 2 toprevent axial relative movement between the second end bracket 5and the power cable 2.second end bracket 5 of a conventional hose clamp.
    According to an embodiment not shown, it constitutesIt should be pointed out that the bending according to the inventionthe limiting device 1 can also be applied in the middleand power cable 2,the power cable when it passes a corner or over a sharp oneedge.for example, to prevent transverse bending of101520253035Preferably, the first end bracket 3 should abutor be connected to the pump, in such a way that itthe first end bracket 3 is not allowed to tilt in relation tothe pump, in order to prevent the power cable 2 from bending sharplybetween its attachment to the pump and the bending limitationIn the embodiment shown, it is locatedthe first end bracket 3 abuts a cable gland 6 of the pumpand at the same time the first end bracket 3 is releasably connectedwith the power cable 2 to prevent axial relative movementbetween the first end bracket 3 and the power cable 2, in addition orinstead, the first end bracket 3 can be detachableconnected to the pump or said cable gland 6 ofthe pump.
    In an alternative embodiment not shown, it is constitutedthe first end bracket 3 of a segment which is of the same shape andtype as said at least two segments 4, whereupon the firstthe end bracket 3 is rigidly connected to the pump or cableguide 6.
    Furthermore, the bending limiting device 1 comprises oneflexible interconnection arrangement 7 connected toand extends between the first end bracket 3 and the secondend bracket 5.axially inelastic in order to be able to withstand axial tensile loadThe interconnection arrangement 7 shall beapplied to the bending limiting device l.The configuration of the bending arrangement 7 means that the bendingthe limiting device 1 is freely movable between a straight lineposition and a curved position having one in advancedetermined, limited bending radius R. The bending radius R istaken in the center of a single segment 4, the bendingthe radius R will substantially correspond to the bending radiusas the power cable 2 will experience. When the bending limitationthe device 1 is in the straight position, thethe arrangement 7 may be in an extended state.
    The at least two segments 4 are tubular and iaxial joints arranged at a distance from each other when the bendingthe limiting device 1 is in the straight position. Mentioned101520253035distances should preferably be less than half of oneinner diameters d of the individual segment 4. Further surroundsthe interconnection arrangement 7 at least partially a sheathsurface 8 of and is connected to each of said at leasttwo segments 4. It should be noted that interconnectionthe arrangement 7 according to an embodiment not shown can bedivided into axial sub-elements, where each sub-elementextends at least between two mutually adjacentsegment 4, between said first end bracket 3 and one thereofadjacent segment 4, or between said second end bracket 5and an adjacent segment 4.
    The distance between the first end bracket 2 and the otherthis adjacent segment 4 should be as short as possibleand do not exceed the distance separating the twoadjacent segment 4. Furthermore, the distance between the otherthe end bracket 5 and the segment 4 adjacent to itcritical.
    When the bending limiting device 1 is in the bentthe position, the ends of the segments 4 will be inclined in relationto each other and the 4 ends of the segments will be inpoint contact with each other in the region of an inner radius ofbending limiting device l.the quantity 7 limits the mutual inclination between twomutually adjacent segment 4, by being stretched inthe area of an outer radius of the bending restriction deviceand folded in the region of said inner radius ofthe bending limiting device l.
    Reference is now also made to Figures 2-5, whichschematic shows radially sectioned plan views of bendingthe limiting device 1, which describes alternativesembodiments of the interconnection arrangement 7. Preferablyviewed in a radial cross-section,However, it is conceivablehas segment 4,circular outer surface and circular inner surface.both the outer and the inner surface have the shape of apolygon with several facet surfaces.101520253035The interconnection arrangement 7 preferably consists ofat least one elongated element, which surrounds at least 3/4of the mantle surface 8 of each of the at least twosegment 4. In figure 2, the interconnection arrangement 7 is constitutedof an elongated strap, such as a conventional strap, whichis folded around each segment 4 and covers most of ithence. Either said elongate band may cover at least 3/4of the mantle surface 8 of each segment 4, just cover the wholethe mantle surface 8 of each segment 4 or lie wrapped around ithimself. In Figure 3, the interconnection arrangement 7 is constitutedof an elongate, tubular tube member in which they at leasttwo segments 4 are inserted. An advantage of the abovetube element is that if a segment 4 were to detach fromthe linking arrangement 7, the segment 4 is prevented anywayfrom falling out and the bending limiting device 1function is ensured, in addition dirt is prevented from lookingbetween the at least two segments 4. Furthermore, it ispreferably that the interconnection arrangement 7 is connectedwith each of said at least two segments 4 atat least three along a circumference of each of saidat least two segments 4 equidistantly arranged positions.
    Said positions are preferably located in the area thereofhalf the axial height of the individual segment 4, to allow thatthe interconnection arrangement 7 must be able to be folded in the areaof the inner radius of the bending limiting device 1 thenthe same is in the bent position. It should be noted, howeverthat said positions may be axially displaced inrelationship to each other along the individual segment 4mantelyta 8.
    In Figure 4, the interconnection arrangement 7 consists ofat least three elongate band elements or wires, whichpreferably arranged equidistantly distributed alongthe circumference of the segment 4. Figure 5 shows a preferred embodimentwith four elongate band elements, which are arranged equidistantlydistributed along the circumference of the segment 4. Each of the saidat least three elongate band members are connected to each101520253035of said at least two segments 4 at a position whichpreferably located in the area of the individualhalf axial height of the segment 4. It should be noted, however, thatsaid positions may be axially offset in relationto each other along the mantle surface 8 of the individual segment 4.
    Reference is now also made to Figures 6-9, whichsohematic shows cross-sectional side views of alternative designsof a segment 4 of the bending limiting devicel.
    Figure 6 shows examples of how interconnection arrangementsthe quantity 7 can be connected to each segment 4, partly shownusing a rivet 9, such as a pop rivet, is shownusing a self-tapping screw IO. In a furtherembodiment not shown, the interconnection arrangement 7connected to each segment 4 by means of an adhesive,vulcanization, or other such chemical compound.
    In Figure 7, each segment 4 shows the samemantle surface 8 a circumferential recess 11, an anchoragestrap 12, such as a cable tie, retains interconnectionthe arrangement 7 in said recess 11. Said recessis preferably arranged in the area of the individualhalf axial height of the segment 4.
    Figure 8 shows a segment 4 whose inner surface is weakhourglass shaped, ie. in the cross section shown has the inner surfacethe shape of a concave lens. The advantage of this form is thatthe power cable 2 is spared when the bending limiting device 1 is inthe bent position.
    Figure 9 shows a segment 4 whose ends have been truncatedconical shape, which means that a larger abutment is obtainedbetween two adjacent segments 4 when the bending limitingthe device 1 is in the bent position.
    Preferably, each of said exhibits at leasttwo segments 4 an axial height h which is greater than an interiordiameter d thereof.
    It should be pointed out that the bending according to the inventionthe limiting device 1 can be manufactured directly in the desired1015202530length, or manufactured as a bulk product from which desiredlength is cut off.
    Possible modifications of the inventionThe invention is not limited only to those described above.torn and the drawings shown in the drawings, which onlyhas an illustrative and exemplary purpose. This patentapplication is intended to cover all customizations andvariants of the preferred embodiments described herein, andAccordingly, the present invention is defined bythe wording of the appended claims and their equivalentsThuswithin the scope of the appended claims.ter. the equipment can be modified at any conceivableIt should also be pointed out that all information about / concerningshallinterpreted / read with the equipment oriented in accordance withterms such as above, below, upper, lower, etc.,the figures, with the drawings oriented in such a way thatthe reference numerals can be read correctly.
    Thus, such terms only indicate interrelationships.in the embodiments shown, which conditions can be changedif the equipment according to the invention is provided with anotherconstruction / design.
    It should be noted that even if it is not explicitlyindicated that features of a specific design may bewith the features of another embodiment, this shall be consideredobviously when possible.
    Throughout this specification and in the subsequentshallrequirements, unless the context otherwise requires,it is understood that the word "include", and variants such as"Includes" or "comprising" means includingspecified device or step or group of devices or stepsbut not excluding other devices or steps orgroups of units or steps.
    权利要求:
    Claims (7)
    [1]
    Bending limiting device for an elongate, flexible cable, first end bracket comprising in mutual axial configuration one (3), and one the first end bracket (3) comprises the bending limiting device (1) at least two segments (4) (5), a flexible one which is connected with and opposite second end bracket further interconnecting arrangement (7) extends between the first end bracket (3) and the second end bracket (5) the bending limiting device (1) and which is axially inelastic, being freely movable between a straight position and a bent position having a in advance (R), that are tubular and in axially defined, limited bending radius characterized by, said at least two segments (4) joints arranged at a distance from each other when bending limiting and that the bending device (1) is in the straight position, the interconnecting arrangement (7 ) at least partially surrounds a mantle surface (8) of and is connected to each of said at least two segments (4).
    [2]
    Bending limiting device according to claim 1, characterized in that the interconnection arrangement (7) consists of at least one elongate element, which surrounds at least 3/4 of the mantle surface (8) of each of said at least two segments (4).
    [3]
    Bending limiting device according to claim 1 or 2, characterized in that the interconnection arrangement (7) consists of an elongate, tubular tube element.
    [4]
    Bending limiting device according to claim 3, characterized in that the interconnecting arrangement (7) is connected to each of said at least two segments (4) at at least three along a circumference of each of said at least two which are segments (4) equidistantly arranged positions, Located in the region of the half axial height of the individual segment (4).
    [5]
    Bending limiting device according to claim 1 or 2, characterized in that the interconnection arrangement (7) consists of at least three elongate band elements, and that each of said at least three elongate band elements is connected to each of said at least two segments (4) at a position located in the area of the half axial height of the individual segment (4).
    [6]
    Bending limiting device according to any one of claims 1-3, wherein each of said at least two (8), half axial heights, characterized by, segments (4) has in its circumferential surface in the region of a circumferential (12) in said recess the individual of the segment (4) (ll), holds the interconnection arrangement (7) (ll). continuous recess, whereby an anchoring band remains
    [7]
    Bending limiting device according to any one of the preceding claims, characterized in that each of said at least two segments (4) has an axial height (h) which is greater than an inner diameter (d) thereof.
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    同族专利:
    公开号 | 公开日
    SE536402C2|2013-10-08|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    2016-08-02| NUG| Patent has lapsed|
    优先权:
    申请号 | 申请日 | 专利标题
    SE1151187A|SE536402C2|2011-12-13|2011-12-13|Bending limiter device|SE1151187A| SE536402C2|2011-12-13|2011-12-13|Bending limiter device|
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