DE1931656U - LIFTING DEVICE FOR METAL STRAP. - Google Patents

Description

Lifting device for metal tape reels

Telephone 3 3795

The innovation relates to a lifting device for metal strips, in particular cold-rolled wide strip in coil form, which can be suspended from a crane hook or the like.

To transport such metal tape rolls (bundles), bundle pliers of various designs have been used up to now. The clamping legs of these pliers grip the inner and outer Waistband. The clamping pressures occurring here are so significant that the specific pressure on the surface-sensitive Material exceeds the flow limit of the same and thus still rejects despite the usual re-rolling can lead to so-called hardness veins on the drawn part.

In order to avoid this disadvantage and to enable a gentle transport of such tape laps, is according to the innovation a lifting device is provided which has a spreading device which can be introduced into the collar opening when the lifting device is lowered has, which consists of several radially expandable jaws, which apply pressure to the inner surface of the collar

Telegr.-Adr.i ELPATENT Postscheckkonto Mönchen 86510 Deutsche Bank Augsburg Account 83419 M

invest. The outer pressure surfaces are advantageous here these expanding jaws designed as Zylihderflachen ^ their Curvature approximating the. Curvature of the cylindrical: collar opening corresponds to "This means that the specific compressive forces of these Jaws compared to the aforementioned pliers - considerably down " set and a gentle transport 'guaranteed. \ - - "■ -.-

.In addition to; can also look at the end face of the lifting device on the face ^; des ";Bim" ä \ es-v ^ fs.e "t ^ end € p; - ii ^> ing« ^; =. shaped electromagnet-: yD.r seen , ^r jse ini, at least is effective .on the outer tape windings order; is; das.- telescope "like slipping this ^-; outer Bandwindungerij:.! the _'can occur-especially in hard-rolled -gefetteten tape, .wirksam V ^: prevented..;. '/._:__- ~ .- 3, -: / - U: =. ⁷ - ^: \. ^{Λ .:} Ν .- ^:

This new lifting device for; Metallbahdwickel Jaat. Essential advantage ■ -: ".-- - ■" -.- "" - \ ~ -: \ ^ -: _ ^{; ;} W:. ^: -! - ■■ - ■. \ '- ■ - /

A material-friendly ■ transport: - the metal coil is achieved ·. The additional "arrangement" of the eleJcfeomagiie.ten will prevent the downward sliding of the outer tape winders. horizontal.echter / positionj, .- so ^: - "da: ß; -_ so when lowering the bundles on tilting chairs ₅ plates; fQrä ^;

Convectors from Glühöfendet ,, Rahdbeisehädigungen '(edges' sticking) as a result of oblique run se '^ tQ ^ A ^^ y ^^^' ^^ ti ^^ The new lifting device is characterized by Jsleh; f erner. durefe handy mode of operation \ .auSj; · da'die ulser ^ er ^ '| jast "-outward; protruding lever linkage: - the usual.Bun.dzangen ^: in" -

Elimination come, or the new lifting device a; low Has overall height. The lifting device according to the innovation «: also enables reliable accident-proof work in the Compared to purely magnetic lifting devices, since the ■ new lifting device the mechanical. · internal clamping device the reliable lifting and lowering of the metal tape winds » works and the electromagnet only becomes effective. If the electromagnet fails, this guarantees that the tape roll is still reliably held by the mechanical internal tensioning device (spreading device).

The details of the innovation and its further advantages are explained below with reference to an exemplary embodiment shown in the drawing. ; ^: ^

The drawing shows a vertical section through the; renewal contemporary lifting device _s which is for example mounted on a cold-rolled High bestehendenMetailbandwickel or collar. 1 It is an insertable during lowering of the lifting device in the collar opening 2 ^ spreader provided which consists of a plurality of radially spreadable jaws j5 _s mess with pressure to the collar inner surface. ■ The outer pressure surfaces are useful: 4 this spread « _; _ jaws designed as cylindrical surfaces, the curvature of which is »^; ;, Approaching the curvature of the cylindrical collar opening £ _v ent "" In addition, speaks advantageously extend these prints · faces 4 over a height h, which at least one quarter of the _^s: ^.

β 4 · ■ »■■ - J-

Waistband height H is. This ensures that also with. ; strong radial expansion pressure of the jaws in the direction of R the specific surface pressure is not too high or none can have a deleterious effect on the internal coils of the tape.

In order to allow the spreader to be inserted into the collar opening 2 to facilitate the lowering of the lifting device shown, the lower end of the SpreizvOrrichtüng is advantageously conical tapered .. This lower end can consist of a conical hood exist, which is attached to the expanding device or a vertical expanding mandrel 6, which in turn is arranged centrically within the lifting device .is «" - This expanding mandrel has one or more, upwardly tapering spreads " cones 7, which on corresponding cone surfaces 8 of the ^ Act on expanding jaws. Furthermore, between the expanding mandrel 6 and expanding jaws 3 tension springs 9 and Io arranged radially, which retract the spreading jaws into their rest position. At the upper end of the expanding mandrel 6 is a bracket 11 or the like. intended for hanging a crane hook. ;

From the drawing, it is apparent that the Federal are pressed already with these purely mechanmhen means or the lifted by the crane hook expanding mandrel 6 the expansion jaws against the inner surface ^r. 2 This .Presswirkung can .vör'terirlh ^ flcnoch by hydraulic forces supported or _;; , "vejpstlEkt '.-:" -_ ..be. For this purpose, a piston is provided on the expanding mandrel 6 in the case of "" - your ^ .represented Jlugführung «example _: 12 ^ - the ;; in";

arranged by a hydraulic cylinder _ij5 of the lifting device is. This hydraulic "piston 12" is acted upon on both sides, so that the expanding mandrel is subject to hydraulic bridging forces Shifted both in stroke direction A and in the opposite direction P, can be ..- "-" - ".--. ' : -;. -:; ..

As can be seen from the drawing, an electric motor pump unit 14: 1 is advantageously arranged at the lower end of the expanding mandrel 6 - from which the pressure fluid does not .not .därge-. put lines into the cylinder chamber 16 or the C cylinder · -. room 17 is led «. . \ ^; . . "; / ■ '■";:; _: ~ ^z - -W- ~ ^:. % ^:

The lifting device shown also has another check during lowering of the lifting device to the upper end ^face::. des Bundes 1 aufsitzendeh-ring-shaped ^{VElektr.om a} S ⁿ eten: l8;. on. This is so arranged or, jbemessen ^; that he at least on the outer. Band turns I9 effective, is ... This ring- -. Shaped electromagnet can "be connected to the traverse 2o of the JJub ^ - - .. ^: device by two bolts .21, whereby, the same. Traverse 2o with. the lifting cylinder IJ consists of one piece ^: - .. or firmly connected to this. is ...; ". .. - ;. '. ■.; .- "■ '

The mode of operation of the lifting device described above and shown is as follows: - - _; :.; - ^:: ,; / .; ' ■ ", ■ '_....". ".

By lowering. the whole of the lifting device hanging on a hook becomes the spreading device 4 . _}: in; the ^; vBimdöff «nung 2 introduced to-: s-i _w di-e, _ entire .. lifting device - mlt ^ V-the electromagnet .18 on the -front of the federal 1 ^; away":;-.;

■ 6 "■■■■■"'■ ^{■■::: ";} -: - ^: - = """. ■ -Sf

'■ - ■ ■ ■ ■ ■ - - - ■■■ - * - B

supports. Then the electric motor-pump unit _: "i4, 15 e / inge * switched, so that the hydraulic force of the piston 12 with the expanding mandrel 6 is shifted upward in direction A / so that the expanding cone 7 the jaws 4-radially" after ^; press the outside against the inner surface of the collar 1. - Then the electromagnet 18 is switched on; -The federal government 1 can /, then by a crane or the like. Lifted and transported, with this transport process; /stets.der. Federation. 1 _{: is} in exactly horizontal level ..> \::

After the collar "1" has been set down on any horizontal surface, the-expanding mandrel β ^{: is} pushed downward with hydraulic forces in direction B so; .that. So that the expanding device is relaxed., I.e ^.: the clamping jaws 5 through, the springs 9 » Io into their .rest position:. are. - /

The neuerungsgemäße.-Hubvorrich-door ist.:nicht "only / for careful and accident eheren transport of cold-rolled strip suitable ^ but can for transporting .MetallbandwickeIn any kind are used /, for example, to _{transport:.!:} From annealed strip material, // ^: - ^; / v: - / -:;: -. ■ ,, - "./,: ⁱ ; / -":

Claims (8)

S chut ζ claims 1. Lifting device for metal tape laps, especially cold " Rolled wide band in the form of a bundle attached to a crane hook Od. The like. Can be suspended, marked by a spreading device which can be introduced into the collar opening when the lifting device is lowered, which from consists of several radially expandable jaws that apply pressure to the inner surface of the collar. 2. Lifting device according to claim 1, characterized geke η η - * ζ e 1 ch η et that an additional ring-shaped electromagnet placed on the face of the collar is provided, which is effective at least on "the outer band- 'windings. 3 · Lifting device according to claim 1, characterized in that the outer pressure surfaces of the expansion « jaws are designed as cylindrical surfaces, the curvature of which is approximately the curvature of the cylindrical collar » opening corresponds. 4. Lifting device according to claim 1 or J, characterized ge ke η η = draw t _s - that the pressure surfaces extend over a height (h) which is at least ' l / K of the collar height (H). _. ^ - s 5 · Lifting device according to claims 1, 3 or 4, characterized g e k e η η ζ e i c h η e t that the lower end the spreader tapers conically to the insertion into the waistband opening to facilitate. 6. Lifting device according to claim 1, j5 or 4, characterized by a centric within the Lifting device arranged vertical expanding mandrel, the one or more., upwardly tapering expansion cones, which on corresponding conical surfaces of the expansion jaws act. 7 · Lifting device according to claim 6, characterized in that between the expanding mandrel and expanding jaws Tension springs are arranged radially, which form the expanding jaws retract to their rest position. 8. Lifting device according to claim 6, characterized in that a at the upper end of the expanding mandrel Bracket or the like is provided for hanging a crane hook, "9 · lifting device according to claim 6, characterized geke η η ■ = -" i ze; ch η et that for the purpose of hydraulic axial displacement of the expanding mandrel of these "auöeist, ■ the domestic, a hydraulic cylinder of the lifting device," a piston is arranged. ' ■ - 9 ■ '- _. > yV, lo. Lifting device according to claim 9 * characterized in that an electric motor »pump unit is arranged at the lower end of the expanding mandrel. ^ν: