• 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:
    The invention; relates to a tensioning device (1) for prestressing a tension member (2) of a concrete component, in particular a concrete mast or the like comprising at least one wire or strand, with a tensioning element (12) comprising a conical anchor sleeve (14) and a number of anchors in the anchor sleeve (14) arranged clamping wedges (15), which clamping wedges (15) are supported in a movement of the anchor sleeve (14) in the clamping direction (4) on the anchor sleeve (14) and between the clamping wedges (15) inserted clamping member (2) in the anchor sleeve (14) fix, and with a screw drive (18, 22), with which the clamping element (12) for biasing the tensioning member (2) in the tensioning direction; (4), which screw drive (18, 22) has a threaded spindle (18) connected to the anchor sleeve (14), wherein the threaded spindle (18) has a spindle nut (22) supporting itself at a fixed point (21) of the clamping device (1) ) and a rotational movement of the spindle nut (22) results in an axial movement of the threaded spindle (18).
    公开号:AT512600A2
    申请号:T1602013
    申请日:2013-02-28
    公开日:2013-09-15
    发明作者:
    申请人:Europoles Gmbh & Co Kg；
    IPC主号:
    专利说明:

    28/02/2013 15:00 + 49-9181-511616 PA SCHNEIDER P. 05/19 «· · · · ·« · · · · · · · · · · ····· Φ * • · · · · 130 130 · · · 130 130 130. 13018AT
    jig
    The invention relates to a clamping device for biasing a at least one wire or a strand having tendon of a concrete component, in particular a concrete mast or the like.
    Such Spaunvorrichtungen be used in the production of prestressed concrete components, especially in the production of concrete poles. By masts, supports and the like are understood, which are made of prestressed spun concrete or generally of a concrete material with prestressed tendons. As tendons are mostly steel wires, hereinafter also referred to as strands. The strands are prestressed and tensioned during the production of the concrete poles. The anchoring of the strands on the mast is usually done with the help of clamping wedges on the anchor head of a clamping anchor.
    In the methods known from the prior art, the prestressing of the strands takes place by means of a hydraulic tensioning press. It is a comparatively large, heavy and thus unwieldy device, which is difficult to use by a person alone.
    An object of the present invention is to facilitate the prestressing of a tendon of a concrete component, in particular a concrete mast or the like. This object is achieved by a clamping device according to claim 1. Advantageous embodiments of the invention are specified in the Unteransprücben.
    The erfhrungügemäße tensioning device for biasing the tendon comprises a clamping element having a conical anchor sleeve and a number of arranged in the anchor sleeve clamping wedges, which clamping wedges at 28/02/2013 15:03
    No .: R549 P.005 / 019 28/02/2013 15:00 + 49-9181-511616 PA SCHNEIDER P. 06/19
    13018AT support a movement of the anchor sleeve in the clamping direction of the anchor sleeve and fix the inserted between the clamping wedges tendon in the anchor sleeve, and further comprises a screw, with which the clamping element for biasing the clamping member in the clamping direction is movable, which screw a threaded sleeve connected to the anchor sleeve has, wherein the threaded spindle carries a bearing at a fixed point of the clamping device S spindle nut and a rotational movement of the spindle nut results in an axial movement of the threaded spindle.
    With such a tensioning device, a small, lightweight and thus relatively handy device for biasing is provided. A hydraulic actuation is no longer necessary. This not only reduces the weight and size of the device. The new clamping device is also relatively inexpensive. While conventional hydraulic tensioning presses have a weight of 25 to 50 kilograms, the weight of the tensioning device according to the invention, depending on the design, only about 5 kilograms. Since it is also much smaller than conventional solutions, it is easy to use by one person. It is less maintenance-intensive and less error-prone than previous solutions due to its constructively comparatively simple construction. At the same time, especially because of the easier handling, the preloading can be carried out in a shorter time. In summary, the use of the new clamping device results in a large number of economic advantages.
    An exemplary embodiment of the invention is explained in more detail below with reference to the drawings, in which: FIG. 1 shows a tensioning device in a longitudinal section; 2 shows the tensioning element of the tensioning device acting on the strand (without the threaded spindle and without housing) during the pretensioning; Figs. 3 and 4, the release of the clamping element of the strand after biasing. All figures do not show the invention to scale, while 28/02/2013 15:03
    No .: R549 P.006 / 019 28/02/2013 15:00 -1-49-9181-511616 PA SCHNEIDER P. 07/19
    13Ö18AT only schematically and only with their essential components. Same Bezugszeichei correspond to elements of the same or similar function.
    In Fig. 1, a clamping device 1 according to the invention is shown. The to lit Lit ze 2 extends from the left hand positioned concrete mast (not shown) through the clamping anchor (not shown) and protrudes with its free end 3 of the anchor head of the clamping armature out. The position of the strand 2 is the later clamping direction 4, axially to the strand 2, before. The front side 5 of the anchor head, to which the tensioning device 1 is supported during pretensioning, is indicated by a broken double line. Depending on the concrete component and design of the tension anchor, the tensioning device 1 can also be supported on another suitable abutment.
    To support n on the front side 5 of the anchor head or other suitable abutment, the clamping device 1 at its opposite to the clamping direction 4 facing head 6 has a corresponding support element 7. The Abstützelemeit 7 is provided with an opening 8 through which the strand 2 can be passed. In the present case, the support element 7 designed in the manner of a plate forms the part of a housing body 9. The elongate housing 9 extending in the axial direction 4 is designed as a hollow cylinder with a constant circular cross-section. In Fig. 1, the clamping device 1 is not completely shown. Shown are only the front area (head 6), with which the tensioning device 1 is supported on the anchor head 5, and the rear area (foot 11).
    The housing 9 also serves as a guide for a clamping element 12, which is formed by a coaxially arranged in the interior 13 of the housing 9 Ankeihülse 14 and a number of clamping wedges 15. The conical anchor sleeve 14 has a circular cross-section, with its inner diameter in the clamping direction 4 28/02/2013 15:04
    No .: R549 P.007 / 019 28/02/2013 15:00 + 49-9181-511616 PA SCHNEIDER P. 08/19
    : :::::::::: 13018AT • · «« «· *« ·· · enlarged. In other words, the inner wall 16 of the anchor sleeve runs conically opposite to the clamping direction 4. In the interior 17 of the anchor sleeve 14 initially loosely engage the clamping wedges 15. These wedge sectors 15 will fix the strand 2 inserted between them during the pretensioning.
    For this purpose, the anchor sleeve 14 must be moved in the clamping direction 4. For this purpose, arranged in the clamping direction 4 axially to the strand 2 threaded spindle 18 is connected to the anchor sleeve 14, for example screwed or welded. The thread of the threaded spindle 18 is not shown. The strand 2, which is guided through the support element 7 into the interior 13 of the housing 9, at least as far in the anchor sleeve 14 that it passes with its free end 3, the clamping wedges 15. During the clamping operation, the strand 2 can be received in the interior 19 of the threaded spindle 18, which is made hollow for this purpose
    The threaded spindle 18 extends through a further support element 21 of the housing body 9 in the direction of the foot end 11. This also carried out in the manner of a plate further support member 21 is again designed as part of the housing 9 and serves as an abutment for a seen in the clamping direction 4 after the other Support member 21 mounted on the threaded spindle 18 spindle nut 22. Screw 18 and spindle nut 22 form a spindle drive, by which a rotary motion 29 of the spindle nut 22 is converted into an axial movement 30 of the threaded spindle 18 in the clamping direction 4. By this movement of the threaded spindle 18 and the anchor sleeve 14 is taken in the clamping direction 4. In this case, the clamping wedges 15 tighten by being taken along by the inner wall 16 of the anchor sleeve 14, and wed the strand 2 in the clamping direction 4, as shown in Fig. 2. On their inner sides 23, the clamping wedges 15 are provided with teeth 24. With these spline teeth 24, the clamping wedges 15 engage in the strand 2 and ensure a particularly good power transmission when clamping. The threaded spindle 18 has 28/02/2013 15:05
    No .: R549 P.008 / 019 28/02/2013 15:00 + 49-9181-511816 PA SCHNEIDER P. 09/19 • * ·
    13018AT preferably a trapezoidal thread, which is particularly well suited for a screw drive due to its flank shape.
    The actuation of the spindle nut 22 is carried out manually in the simplest case, for example by means of a wrench or the like. In the case shown, a gear 25 for driving the spindle nut 22 is provided at the foot end 11. The transmission 25 is shown in Fig. 1 only schematically and without far Gearere elements. Advantageously, it is a transmission gear. The use of a bevel gear designed as a gear transmission has proven to be particularly advantageous, which can be driven by means of an external drive (not shown), such as a plow machine, a cordless screwdriver or the like, via a hexagonal shaft 26 projecting out of the housing 9. In an embodiment not shown, the drive is already integrated in the housing 9.
    If the clamping operation is completed, the tensioning device 1 must be released from the strand 2. For this purpose, first the threaded spindle 18 and thus the anchor sleeve 14 is moved counter to the direction Spaimrichtung 4 until the clamping wedges 15 are no longer acted upon by the anchor sleeve Hl and no longer hold the stranded wire 2. Subsequently, a new wedging of the clamping wedges 15 and thus a renewed gripping of the strand 2 is blocked by the relative position of the clamping wedges 15 is fixed to the Ankefhiilse 14 by means of a blocking element in the form of a bolt 27, see Fig. 3. The bolt 27 prevents Applying the inner wall 16 of the anchor sleeve 14 to the outer sides 28 of the clamping wedges 15 and thus entrainment of the clamping wedges 15 by the anchor sleeve 14. Subsequently, the clamping device 1 can be removed in the clamping direction 4 of the strand 2, as shown in Fig. 4.
    The bolt 27 is held in an opening, not shown in the anchor sleeve 14 and is between a blocking position and a holding position, in the 28/02/2013 15:05
    No .: R549 P.009 / 019 28/02/2013 15:00 + 49-9181-511616 PA SCHNEIDER P. 10/19
    1301 SAT he does not block the wedging, sliding. In the simplest case, the bolt 27 can be operated manually. For this purpose, the housing body 9 is provided with a slot, not shown, through which an actuation of the bolt 27 can take place. Alternatively, the bolt 27 can be automatically brought into the blocking position by means of a suitable device as soon as the desired preload has been reached.
    On the housing 9, a handle (not shown) may be provided, which facilitates the handling of the clamping device 1.
    All features described in the description, the following claims and the drawings can be essential to the invention both individually and in any combination with one another.
    REFERENCE SIGNS LIST 1 tensioning device 2 stranded wire 3 free end of the stranded wire 4 tensioning direction, axial direction 5 end face of the anchor head 6 head end of the tensioning device 7 support element at the head end 8 opening 9 housing, outer sleeve 28/02/2013 15:06
    No .: R549 P.010 / 019 28/02/2013 15:00 + 49-9181-511816 PA SCHNEIDER p. 11/19 · · · · * * * * * · ♦ · · · _: :::: :: **: · 13018AT «» · »» · · * «· * 10 (free) 11 Foot end of the tensioning device 12 Clamping element 13 Inside of the housing 14 Anchor cover, clamping sleeve 15 Clamping wedge 16 Inner wall of the anchor sleeve 17 Inside of the anchor sleeve 18 Threaded spindle 19 Inside of the threaded spindle 20 (free) 21 Support element at the foot end 22 Spindle nut 23 Inside of the clamping wedge 24 Spline teeth 25 Transmission (schematic) 26 Drive shaft 27 Bolt 28/02/2013 15:06
    No .: R549 P.011 / 019 28/02/2013 15:00 + 49-9181-511816 PA SCHNEIDER P. 12/19
    13018AT 28 Outside of the clamping wedge 29 Rotational movement 30 axial movement 28/02/2013 15:06
    No .: R549 P. 012/019
    权利要求:
    Claims (6)
    [1]
    28/02/2013 15:00 + 49-9181-511616 PA SCHNEIDER p. 13/19 tf ·················································································· 1. Clamping device (1) for pretensioning a tension member (2) of a concrete component, in particular a concrete mast or the like, which has at least one wire or strand, with a tensioning element (12) comprising a conical anchor sleeve (10). 14) and a number of in the anchor sleeve (14) arranged clamping wedges (15), which clamping wedges (15) are supported in a movement of the anchor sleeve (14) in the clamping direction (4) on the anchor sleeve (14) and that between the clamping wedges (15) fix in-lying tendon (2) in the anchor sleeve (14), and with a screw (18,22) with which the clamping element (12) for biasing the tensioning member (2) in the clamping direction (4) is movable, which screw drive (18,22) having a threaded sleeve (18) connected to the anchor sleeve (14), wherein the threads spindle (18) bears at a fixed point (21) of the clamping device (1) supporting spindle nut (22) and a rotational movement of the spindle nut (22) in an axial movement of the threaded spindle (18) results.
    [2]
    2. Clamping device (1) according to claim 1, wherein the clamping wedges (15) on their inner sides (23) with teeth (24) are provided.
    [3]
    3. Clamping device (1) according to claim 1 or 2, with a blocking device for blocking the entrainment of the clamping wedges (15) by the anchor sleeve (14) during a movement of the anchor sleeve (14) in the clamping direction (4), which blocking means a between the anchor sleeve (14) and the outer side (28) of the clamping wedges (15) positionable blocking element (27), preferably in the form of a bolt comprises
    [4]
    4. Clamping device (1) according to one of claims 1 to 3, wherein the threaded spindle (18) is a trapezoidal threaded spindle. 28/02/2013 15:07 No .: R549 P.013 / 019 28/02/2013 15:00 + 49-9181-511616 PA SCHNEIDER p. 14/19 · * · »« · * · · · 13018AT • ·· ♦ t * • ♦ · »··· ♦ ♦« · • * · ·
    [5]
    5. Clamping device (1) according to one of claims 1 to 4, with a transmission gear (25) for rotating the spindle nut (22).
    [6]
    6. Clamping device (1) according to one of claims 1 to 5, with a motor for driving the spindle nut (22). 28/02/2013 15:07 No .: R549 P.014 / 019
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    同族专利:
    公开号 | 公开日
    DE102013102004A1|2013-09-05|
    CH706239A2|2013-09-13|
    AT512600A3|2014-11-15|
    DE202012008329U1|2012-11-09|
    DE202012002354U1|2012-06-15|
    AT512600B1|2015-05-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    CH444441A|1965-09-16|1967-09-30|Losinger Ag|Device for tensioning and anchoring several tendons that together form a tensioning cable|
    DE7524682U|1975-08-04|1976-05-13|Duevel, Wilhelm, 4904 Enger|CLAMPING DEVICE FOR INSERTS IN PREFABRICATED CONCRETE ELEMENTS|
    CH597470A5|1976-07-02|1978-04-14|Bureau Bbr Ltd|US8904721B2|2008-06-12|2014-12-09|University Of Utah Research Foundation|Anchoring, splicing and tensioning elongated reinforcement members|
    EP2313554A2|2008-06-12|2011-04-27|University of Utah Research Foundation|Anchoring, splicing and tensioning elongated reinforcement members|
    US10006477B2|2010-04-13|2018-06-26|University Of Utah Research Foundation|Sheet and rod attachment apparatus and system|
    法律状态:
    2020-09-15| PC| Change of the owner|Owner name: FUCHS EUROPOLES BESITZ GMBH & CO. KG, DE Effective date: 20200803 |
    优先权:
    申请号 | 申请日 | 专利标题
    DE201220002354|DE202012002354U1|2012-03-03|2012-03-03|biasing device|
    DE201220008329|DE202012008329U1|2012-03-03|2012-08-31|jig|
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