DE10160165B4 - Device for bracing a belt - Google Patents

Device for bracing a belt Download PDF

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Publication number
DE10160165B4
DE10160165B4 DE10160165A DE10160165A DE10160165B4 DE 10160165 B4 DE10160165 B4 DE 10160165B4 DE 10160165 A DE10160165 A DE 10160165A DE 10160165 A DE10160165 A DE 10160165A DE 10160165 B4 DE10160165 B4 DE 10160165B4
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DE
Germany
Prior art keywords
clamping
belt
fitting
housing
slider
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Expired - Fee Related
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DE10160165A
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German (de)
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DE10160165A1 (en
Inventor
Patentinhaber gleich
Original Assignee
Rüdiger Kohls
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Priority to DE10160165A priority Critical patent/DE10160165B4/en
Publication of DE10160165A1 publication Critical patent/DE10160165A1/en
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    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/24Magnetic cores
    • H01F27/25Magnetic cores made from strips or ribbons
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/24Magnetic cores
    • H01F27/26Fastening parts of the core together; Fastening or mounting the core on casing or support
    • H01F27/263Fastening parts of the core together
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H01F41/06Coil winding
    • H01F41/082Devices for guiding or positioning the winding material on the former
    • H01F41/084Devices for guiding or positioning the winding material on the former for forming pancake coils

Abstract

Device (10) for bracing a belt (12), in particular for bracing transformer plates of a transformer core, comprising a first belt receptacle (16) connected to a first end (14) of the belt (12) and a second end (18) of the belt Belt (12) connected to the second belt seat (20), wherein between the first and the second belt seat (16, 20) at least one clamping element (22) is arranged, wherein at least one of the belt receivers (16, 20) has a housing (24) with a substantially wedge-shaped clamping element (34), wherein the housing (24) at least two to the wedge-shaped clamping element (34) adapted stop surfaces (30, 32) and wherein one end (14) of the belt (12) in any length between the clamping element (34) and at least one stop surface (30, 32) of the housing (24) can be clamped by means of the tensile force applied by the tensioning element (22), characterized in that the wedge-shaped clamping element (34) is in two parts det comprising a slider (36) having a sliding surface extending parallel to the first stop surface (32) and a first clamping surface (44) adjacent to the belt (12) and a fitting (38) parallel to the second stop surface (38). 30) extending further clamping surface (56) and a voltage applied to the belt (12) second clamping surface (42) that the fitting (38) is completely covered by the belt (12), so that the belt (12) between the first clamping surface (44) of the slider (36) and the second clamping surface (42) of the molding (38) and between the further clamping surface (56) of the molding (38) and the second stop surface (30) of the housing (24) is clamped and in that Side walls (26, 28) of the housing (24) guides (58, 60, 62) as elongated holes are introduced, in which the slider (36) and / or the fitting (38) is guided such that upon movement of the slider and / or the fitting in the opposite direction the tensile force of the clamping zone (40) formed between the slider (36) and the fitting (38) and / or a clamping zone (54) formed between the fitting (38) and the stop surface (30) of the housing for releasing the strap (12) is enlarged.

Description

  • The invention relates to a device for bracing a belt according to the preamble of claim 1.
  • A device of the type mentioned is from the DD 236 573 A1 in the form of a rope connection known. This cable connection is formed from two wedge locks, which have on their sides facing away from the rope double tab-shaped and extensions with bore. In the tab-shaped extensions each a perpendicular to the wedgelock transfer element are provided. The transmission links are articulated to the wedge locks and connected to each other by clamping screws.
  • Each time around a wedgelock the support cable is placed, connected by means of force-locking connection means such as cable clamps and formed a loop of rope. To set different cable lengths, however, the cable clamps must be solved, what tools are needed, which is associated with additional effort. Using a strap instead of the rope may damage the strap by using rope clamps.
  • In the US 6,058,574 A a device for clamping devices is disclosed. The device comprises a housing with a bore for receiving the wire, wherein wedge-shaped clamping elements are provided within the housing, which cause a locking of the wire within the housing. The clamping wedges can be fixed against the wire either by means of a screw element or a spring element in order to clamp it against the housing.
  • In the US 4,747,631 A a cable closure and a security device are described. The device comprises a housing in which one end of the cable is received, wherein a free end of the cable is fixed in a reel arranged in the housing. The free end can then be moved freely in a first direction, but is locked in the opposite direction.
  • The EP 0 257 856 A2 relates to a cable balancing sleeve comprising a sleeve body, a plurality of shaped cable wedges removably disposed in the sleeve and at least one wedge-shaped central sleeve which is in frictional contact with the cables, and preferably fastening means integral with the sleeve housing for attachment the wedge-shaped central sleeve are connected.
  • In the DE 903 991 B is described a Seilkauschen cover for conveyor baskets in mining, in which the load is attached to a hood placed around the Kuche heart and is thereby exploited for clamping the rope on Kauschherz. Such a rope thimble is characterized in that the hood surrounds the rope groove of the thimble heart only in one half of the thimble heart and clamps the rope, while in the other half of the thimble heart, the end of the rope is fixed by means of terminals, and that the anvil to the nip by a Slide bearing of the hood is formed on Kauschherz.
  • Furthermore, a device is known from the prior art, in which a tension belt of predetermined length in its end loops each have bolts whose ends are connected to each other via clamping screws to produce the required clamping force in the tension belt. The known device is based on the disadvantage that the prefabricated tensioning strap can only be used for a specific diameter, for example, of a transformer core composed of transformer plates, so that a flexible adaptation to different diameters is not provided.
  • Furthermore, so-called ratchet tensioners are known from the prior art, which have a shaft with a slot for receiving a tension belt, wherein the tension belt is rolled up during tensioning on the shaft. Due to the resulting upon rolling increasing diameter of the belt winding on the shaft, the setting of a defined tensile force for the tension belt is not guaranteed. In addition, ratchet tensioners of the known type are not suitable for the high clamping forces required for bracing transformer plates of a transformer core.
  • Based on this, the present invention is based on the problem of developing a clamping device of the type mentioned in that it can be adapted to different belt lengths in a simple manner, while high belt forces can be adjusted.
  • The problem is solved by the features of claim 1.
  • On the one hand, the advantage of the device according to the invention is that flexible adaptation of the belt length to the object to be clamped, such as, for example, a transformer core consisting of individual transformer sheets, is possible in a simple manner. In this case, one end of the belt between the clamping element and the housing in the released position of the clamping element is set to the appropriate length and by Bracing the spindle screw clamped between the wedge-shaped clamping element and the housing so that a secure fixation is ensured even at high forces.
  • The wedge-shaped clamping element is formed in two parts, comprising a slider having a sliding surface extending parallel to the first stop surface and a first clamping surface adjacent to the belt, and a shaped piece having a surface extending parallel to the second stop surface and a second clamping surface adjacent to the belt. wherein the fitting is substantially completely enclosed by the strap so that the strap is clamped between the first clamping surface of the slider and the second clamping surface of the fitting and / or between the surface and the second stop surface of the housing. By the preferred embodiment, the effective clamping surface can be increased, so that larger tensile forces are adjustable.
  • A simple and safe handling of the device is ensured by the fact that the slider and / or the fitting is guided within the housing such that a displacement in one direction against the clamping force causes an opening of the clamping element, so that the belt freely displaceable or in its length is adjustable.
  • For this purpose, guides such as slots are introduced in side walls of the housing, in which the slider and / or the fitting are guided such that upon movement of the sliding and / or fitting in the direction opposite to the tensile force between the individual clamping pieces and / or between the Fitting and the stop surface formed clamping zones are increased. It is provided that the guides are formed as elongated holes which extend parallel or substantially parallel to the abutment surface of the housing, against which the slider or the fitting abuts.
  • A further improvement of the clamping effect is achieved in that the clamping surface has an asymmetric surface structure, in particular a sawtooth-shaped structure, wherein the opposing clamping surfaces of the slider and the molded piece essentially form a toothing with each other.
  • It is provided that the surface structure has first structural sections with a longitudinal extension L and second sections of a structural extension H extending substantially at right angles thereto, wherein a ratio V of lengths H and L is in the range between 2/1 ≦ L / H ≦ 4/1 lies.
  • In order to ensure a gentle clamping of the belt is further provided, a transition between the portion of length L and the portion of length H has a radius R in the range of 5 mm ≤ R ≤ 15 mm, preferably R = 10 mm. It should be noted that the radius R is substantially dependent on the belt material used.
  • In order to achieve a secure clamping effect is provided that the abutment surfaces of the housing form an angle α in the range of 24 ° ≤ α ≤ 40 °, preferably α = 30 ° and that the wedge-shaped slider and fitting each have an angle β in the range 12 ° Span ≤ β ≤ 20 °, preferably β = 15 °.
  • It is envisaged that the clamping element is designed as a spindle screw, wherein the spindle screw is guided in a lateral housing walls connecting bolt and wherein the bolt is pivotable about its longitudinal axis. About the spindle screw, the tensile force of the belt can be precisely adjusted by applying a certain torque. The pivotal arrangement of the bolt ensures that the spindle screw can automatically align in the direction of the webbing.
  • At a first end, the spindle screw has a receptacle such as nut for a screwing tool such as screwdrivers or torque wrench and at a second end is mounted via a thrust bearing, the second belt receiving, which is connectable to the end of the belt. The thrust bearing ensures that rotation of the spindle screw prevents turning of the belt retainer and thus prevents the belt from twisting.
  • Further details, advantages and features of the invention will become apparent not only from the claims, the features to be taken these features - alone and / or in combination - but also from the following description of a drawing to be taken preferred embodiment.
  • Show it:
  • 1 a side view of a belt tensioning device and
  • 2 a plan view of the belt tensioning device according to 1 ,
  • In the 1 and 2 is a device 10 for tensioning a belt 12 shown in side view and top view, which is used for example for bracing a transformer core made of individual transformer sheets (not shown).
  • The device 10 includes one with a first end 14 of the belt 12 connected first belt receiving 16 and one with a second end 18 of the belt 12 Connected second belt intake 20 , Between the first belt intake 16 and the second belt seat is at least one tensioning element 22 arranged as spindle screw, with which the required tension of the belt 12 is adjustable.
  • According to the invention it is provided that the first belt receiving 16 a housing 24 includes, with side walls 26 . 28 as well as stop surfaces 30 . 32 which span an acute angle α in the range of 25 ° ≤ α ≤ 40 °, preferably α = 30 °. In the housing is a clamping element 34 slidably arranged, with which the end 14 of the webbing 12 inside the case 24 can be clamped in a certain position. The clamping element 34 consists of a slider in the present embodiment 36 as well as a fitting 38 , being between the slider 36 and the fitting 38 a clamping zone 40 for receiving the belt 12 is formed. The clamping zone 40 is through first clamping surfaces 44 and a second clamping surface 42 formed and has a preferably asymmetrical sawtooth structure. The first clamping surface 44 is part of the slider 36 and the second clamping surface 42 is part of the fitting 38 ,
  • The sawtooth structure comprises first, longer structural sections 46 and at right angles thereto extending second, shorter structural sections 48 on, extending in the course of the clamping zone 40 to repeat. The longer structural sections run thereby 46 essentially at an angle of 30 ° to the stop surface 32 and the shorter sections 48 at an angle of 120 ° with respect to the stop surface 32 ,
  • A transition 50 between the longer structure section 46 and the shorter structural section 48 has a radius R, wherein the radius R is in the range of 8 mm ≤ R ≤ 12 mm, preferably R = 10 mm. This ensures that at high belt forces impairment of the belt material is excluded and that at the same time high belt forces F in the range of 15 kN ≤ F ≤ 35 kN, preferably F = 25 kN can be achieved.
  • The fitting 38 is essentially completely from the strap end 14 enclosed, with the strap 12 starting from the clamping zone 40 along a surface 52 extends and in a clamping zone 54 runs between the stop surface 30 of the housing and another clamping surface 56 of the fitting 38 is formed.
  • To a displacement of the slider 36 or the fitting 38 inside the case 24 to allow are in the side walls 26 . 28 each tours 58 . 60 . 62 formed by which is achieved when a displacement of the slider 36 and the fitting 38 in the direction against the tensile force on the one hand, the clamping zone 40 and on the other hand the clamping zone 54 be opened, allowing easy insertion or displacement of the belt 12 is guaranteed.
  • The guides 58 . 60 . 62 are formed in the embodiment as elongated holes, in which with the slider 36 or fitting 38 connected pins 64 . 66 . 68 , which are outside the case via a tab 70 . 72 are connected, are guided.
  • The spindle screw 22 is in a bolt 74 stored, extending between the side walls 26 . 28 extends and about a longitudinal axis 76 is pivotable. This may cause the spindle screw 22 in the direction of the belt 12 to adjust. The spindle screw 22 itself is at a first end 78 with a mother 80 connected to a screwing tool such as torque wrench or wrench can be attached. A second end 82 the spindle screw 22 is about a thrust bearing 84 with the belt intake 20 connected to the belt 12 to an end 18 connected is.
  • Due to the embodiment of the invention, the Gurtaufnahme 16 it is ensured that the belt can be tensioned in any length. An end 14 The strap will be in between the slider 36 and the fitting 38 formed clamping zone 40 introduced, and then through the clamping zone 54 led out of the case and tightened in length, so that the belt 12 has sufficient bias. Then it is over the spindle screw 22 the belt 12 braced, with a turning tool such as a torque wrench on the nut 80 is attached, so that in the belt 12 occurring force with reasonable accuracy and uniformity is adjustable.
  • Due to the sawtooth-shaped structure of the opposing clamping surfaces 42 . 44 of the slider 36 or fitting 38 a high clamping strength is achieved, with the strap end 14 to the between the stop surface 30 of the housing and the fitting 38 is clamped so that a fixation of the strap end is guaranteed even at forces in the range F = 25 kN.

Claims (10)

  1. Contraption ( 10 ) for bracing a belt ( 12 ), in particular for clamping transformer plates of a transformer core, comprising one having a first end ( 14 ) of the belt ( 12 ) connected first Gurtaufnahme ( 16 ) and one with a second end ( 18 ) of the belt ( 12 ) connected second Gurtaufnahme ( 20 ), wherein between the first and the second Gurtaufnahme ( 16 . 20 ) at least one tensioning element ( 22 ), wherein at least one of the belt receivers ( 16 . 20 ) a housing ( 24 ) with a substantially wedge-shaped clamping element ( 34 ), wherein the housing ( 24 ) at least two of the wedge-shaped clamping element ( 34 ) adapted stop surfaces ( 30 . 32 ) and one end ( 14 ) of the belt ( 12 ) in any length between the clamping element ( 34 ) and at least one stop surface ( 30 . 32 ) of the housing ( 24 ) by means of the tensioning element ( 22 ) tensile force can be clamped, characterized in that the wedge-shaped clamping element ( 34 ) is formed in two parts, comprising a slider ( 36 ) with a parallel to the first stop surface ( 32 ) sliding surface and one on the belt ( 12 ) adjacent first clamping surface ( 44 ), as well as a fitting ( 38 ) with a parallel to the second stop surface ( 30 ) extending further clamping surface ( 56 ) and one on the belt ( 12 ) adjacent second clamping surface ( 42 ) that the fitting ( 38 ) completely from the belt ( 12 ), so that the belt ( 12 ) between the first clamping surface ( 44 ) of the slider ( 36 ) and the second clamping surface ( 42 ) of the fitting ( 38 ) and between the further clamping surface ( 56 ) of the fitting ( 38 ) and the second stop surface ( 30 ) of the housing ( 24 ) and that in side walls ( 26 . 28 ) of the housing ( 24 ) Guides ( 58 . 60 . 62 ) are introduced as slots in which the slider ( 36 ) and / or the fitting ( 38 ) is guided such that upon movement of the slider and / or the fitting in the direction opposite to the tensile force between the slider ( 36 ) and the fitting ( 38 ) formed clamping zone ( 40 ) and / or between the fitting ( 38 ) and the stop surface ( 30 ) of the housing formed clamping zone ( 54 ) to release the belt ( 12 ) is increased.
  2. Device according to claim 1, characterized in that the clamping surface ( 42 . 44 ) has an asymmetric surface structure, in particular a sawtooth-shaped structure, wherein the opposing clamping surfaces ( 42 . 44 ) of the slider ( 36 ) or the fitting ( 38 ) essentially form a toothing with each other.
  3. Device according to claim 1 or 2, characterized in that the surface structure comprises first structural sections ( 46 ) having a longitudinal extent L and substantially perpendicular thereto extending second structural sections ( 48 ) having a length H, wherein a ratio V of the lengths is in the range between 2/1 ≤ L / H ≤ 4/1.
  4. Device according to at least one of the preceding claims, characterized in that a transition ( 50 ) between the structural section ( 46 ) with the length L and the structure section ( 48 ) with the length H has a radius R in the range of 5 mm ≤ R ≤ 15 mm, preferably R = 10 mm.
  5. Device according to at least one of the preceding claims, characterized in that the stop surfaces ( 30 . 32 ) of the housing ( 24 ) span an angle α in the range of 25 ° ≤ α ≤ 40 °, preferably α = 30 °.
  6. Device according to at least one of the preceding claims, characterized in that the wedge-shaped slider ( 36 ) and / or the wedge-shaped shaped piece ( 38 ) in each case an angle β in the range between 12 ° ≤ β ≤ 20 °, preferably β = 15 ° spans.
  7. Device according to at least one of the preceding claims, characterized in that the clamping element ( 22 ) is designed as a screw screw.
  8. Device according to at least one of the preceding claims, characterized in that the spindle screw ( 22 ) in one of the lateral housing walls ( 26 . 28 ) connecting bolts ( 74 ) and that the bolt ( 74 ) about its longitudinal axis ( 76 ) is pivotally mounted.
  9. Device according to at least one of the preceding claims, characterized in that the tensile force within the belt ( 12 ) through the spindle screw ( 22 ) is adjustable.
  10. Device according to at least one of the preceding claims, characterized in that the spindle screw ( 22 ) at a first end ( 78 ) a recording ( 80 ) such as nut for a screwing tool such as screwdrivers or torque wrench and at a second end ( 82 ) via a thrust bearing ( 84 ) with the second belt retainer ( 20 ) connected is.
DE10160165A 2001-12-07 2001-12-07 Device for bracing a belt Expired - Fee Related DE10160165B4 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE10160165A DE10160165B4 (en) 2001-12-07 2001-12-07 Device for bracing a belt

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE10160165A DE10160165B4 (en) 2001-12-07 2001-12-07 Device for bracing a belt

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DE10160165A1 DE10160165A1 (en) 2003-06-18
DE10160165B4 true DE10160165B4 (en) 2013-07-11

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE903991C (en) * 1934-05-12 1954-02-15 Fritz Otto Rope thimbles for conveyor baskets in mining
DD236573A1 (en) * 1985-04-23 1986-06-11 Bmk Veb Cable connection, in particular for wear lines of console rugs on chimneys
EP0257856A2 (en) * 1986-08-05 1988-03-02 Esco Corporation Wire rope equalizer socket
US4747631A (en) * 1985-12-26 1988-05-31 Brammall, Inc. Cable locking and sealing device
US6058574A (en) * 1996-03-23 2000-05-09 Gripple Limited Devices for clamping wires, etc.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE903991C (en) * 1934-05-12 1954-02-15 Fritz Otto Rope thimbles for conveyor baskets in mining
DD236573A1 (en) * 1985-04-23 1986-06-11 Bmk Veb Cable connection, in particular for wear lines of console rugs on chimneys
US4747631A (en) * 1985-12-26 1988-05-31 Brammall, Inc. Cable locking and sealing device
EP0257856A2 (en) * 1986-08-05 1988-03-02 Esco Corporation Wire rope equalizer socket
US6058574A (en) * 1996-03-23 2000-05-09 Gripple Limited Devices for clamping wires, etc.

Also Published As

Publication number Publication date
DE10160165A1 (en) 2003-06-18

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