• 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 device for holding a lifting anchor (6) for a workpiece made of concrete during the vibration compaction of the concrete placed in a mold for workpiece production, with a frame (2) provided on a mold wall (1), which is moved transversely by means of an actuator (12) The receptacle (4) for the anchor head (10) of the lifting anchor (6), which can be displaced between a working position and a demolding position, has an opening (8) in the forming wall (1) in the working position of the receptacle (4). final, a recess (9) forming the workpiece penetrates (7), and described with a in the receptacle (4) provided to the lifting anchor (6) coaxial, the anchor head (10) magnetically holding the end face magnetically (13). In order to ensure advantageous formwork removal conditions, it is proposed that the core (14) of the electromagnet (13) form a displacement guide for an ejector (16) which is attached to the end face of the armature head (10) and is connected to an actuator (17).
    公开号:AT521682A4
    申请号:T50969/2018
    申请日:2018-11-12
    公开日:2020-04-15
    发明作者:
    申请人:Ulrich Schluesselbauer；
    IPC主号:
    专利说明:

    The invention relates to a device for holding a lifting anchor for a workpiece made of concrete during the vibration compression of the concrete placed in a mold for workpiece production with a frame provided on a mold wall, which is displaceable by means of an actuator transversely to the mold wall between a working position and a demoulding position Has receptacle for the anchor head of the lifting anchor, which in the working position of the receptacle closes an opening in the mold wall that forms a recess in the workpiece, and with a provided in the receptacle, coaxial to the lifting anchor, magnetically holding the anchor head on the face side.
    When manufacturing concrete workpieces with lifting anchors, the lifting anchors must be held against the mold wall during the vibration compaction of the concrete placed in a mold so that the lifting anchors are not displaced in the concrete body by the vibrations occurring during the vibration compaction. For this purpose, it is known to provide a frame on the mold wall with a receptacle for the head of the lifting anchor and to hold the lifting anchor axially in the receptacle with the aid of an electromagnet. For demolding, the lifting anchor shaken into the concrete must be released from the holder by pulling the holder off the lifting anchor after switching off the electromagnet by means of an actuator. Since the anchor head is arranged recessed in a recess in the concrete body, this recess is advantageously formed by a usually dome-shaped mold connection connected to the receptacle for the anchor head and penetrating through the anchor head and which closes an opening in the mold wall and through
    2/9 this opening protrudes into the mold space. By pulling off the one with the
    However, there is a risk that the lifting anchor associated with the shape of the lifting anchor is entrained by the molding or the mounting, which can lead to cracks in the concrete body and thus to a reject workpiece even with small displacements of the lifting anchor.
    The invention is therefore based on the object to provide a holding device for a lifting anchor which, despite a secure mounting of the lifting anchor during vibration compression of the concrete body, ensures trouble-free removal of the lifting anchor without risk of damage to the concrete body.
    On the basis of a device of the type described at the outset, the invention achieves the object in that the core of the electromagnet forms a displacement guide for an ejector which is connected to an actuator on the face of the armature head.
    Due to this measure, the receptacle with the form attachment can be withdrawn into the demolding position without risk of entrainment of the lifting anchor, because the ejector, which can be acted upon by an actuator, at least supports the anchor head against entrainment until the anchor head is released from the receptacle or the form attachment . The holding force of the electromagnet is not decisively weakened by the ejector passing through the magnetic core, especially if the ejector is made of a ferromagnetic material, because part of the magnetic field then passes through the ejector, so that a corresponding magnetic field can also act in the area of the end face of the ejector .
    The actuator for the ejector can be assigned to the frame. However, the design is simpler if the actuator for the ejector is assigned to the receptacle for the anchor head and therefore follows the movement of the receptacle, which means that the actuator for the ejector has to be acted upon in opposite directions to the ejector. This results in an automatic movement compensation when the pusher
    3/9 is resiliently applied, so that the spring force when pulling the receptacle provided with the shaped attachment off the lifting anchor not only ensures that the ejector abuts the lifting anchor, but also holds the lifting anchor back with sufficient supporting force against being carried along by the receiving member. However, this supporting force must be chosen to be smaller than the resistance of the lifting anchor to the green concrete body. In this context, advantageous design conditions are ensured if the actuator for the ejector comprises a compressed air cylinder.
    If compressed air is available, the receptacle for the anchor head can be pressurized with compressed air during the demoulding, which on the one hand supports the detachment of the anchor head from the receptacle and on the other hand achieves a cleaning effect in the area of the receptacle and the mold attachment.
    The subject matter of the invention is shown in the drawing, for example. Show it
    Fig. 1 shows an inventive device for holding a lifting anchor for a workpiece made of concrete in a simplified section along the anchor axis in the working position and
    Fig. 2 is a representation of the device corresponding to Fig. 1 in a demoulding position.
    The device shown has a frame 2 fastened to the mold wall 1 of a mold for producing a workpiece made of concrete, which forms a carrier 3 for a receptacle 4 of a lifting anchor 6 projecting into the concrete body 5 of the workpiece. This receptacle 4 is connected to a molding attachment 7 which closes an opening 8 in the molding wall 1 to the outside and projects through this opening 8 into the molding space in order to form a recess 9 for the anchor head 10 in the concrete body 5. This recess 9 can have a different geometric design, because the only thing that matters is the arrangement of the anchor heads 10 in the recess 9 that is recessed relative to the workpiece surface. For this reason, the shape approach 7 in addition to a dome-shaped configuration
    4/9 also have an angular, in particular frustoconical or pyramidal shape.
    To move the mold shoulder 7 and the receptacle 4, the carrier 3 is slidably mounted on a guide 11 of the frame 2 transversely to the mold wall 1 and connected to an actuator 12, for example an actuating cylinder.
    The lifting armature 6 inserted into the receptacle 4 and penetrating the molded shoulder 7 is held axially in the receptacle 4 by an electromagnet 13. The electromagnet 13 comprises in a conventional manner a ferromagnetic core 14 and an excitation coil 15 surrounding the core 14. The magnetic field which is active when the excitation coil 15 is switched on pulls the armature head 10 into the receptacle 4 and releases it again after the electromagnet 13 has been switched off.
    The lifting anchor 6 inserted into the receptacle 4 and held magnetically in the receptacle 4 can thus be inserted into the mold through the opening 8 of the mold wall 1 in order to be able to produce the workpiece provided with a lifting anchor 6 in a recess 9 in the concrete body 5. The holding of the anchor head 10 in the receptacle 4 after filling the mold with concrete during a compression vibration of the mold ensures that the lifting anchor 6 does not move in an impermissible manner during the compression vibrations.
    The mounting of the lifting anchor 6 in the receptacle 4, however, entails the risk that when the receptacle 4 and the mold extension 7 are withdrawn from the working position according to FIG. 1, the lifting anchor 6 is at least partially taken along and in the Concrete body 5 shifted, which can lead to cracks in the still green concrete body 5. In order to counter this danger, an ejector 16 is provided which passes axially displaceably through the core 14 of the electromagnet 13 and is connected to an actuator 17. This actuator 17 is assigned to the carrier 3 and thus to the receptacle 4, that is to say it is moved with the receptacle 4, so that when the formwork is removed, the pusher 16 must be held against the anchor head 10 by the actuator 17 until the
    5/9
    Has released anchor head 10 from the receptacle 4, then with the receptacle 4 in the
    To be taken away.
    This is ensured in a simple manner in that the ejector 16 is acted upon resiliently by the actuator 17, which is advantageously designed as a compressed air cylinder 18 for this purpose. When the compressed air cylinder 18 is pressurized with compressed air, the ejector 16 is held in contact with the anchor head 10, as a result of which the lifting anchor 6 is supported by the ejector 16 against entrainment by the receptacle 4 or the molding attachment 7. Only when the ejector 16 reaches its stop-limited end position is the ejector 6 lifted from the anchor head 10 and retracted into the demoulding position according to FIG. 2.
    In order to support the release of the anchor head 10 from the receptacle 4, the receptacle 4 for the anchor head 10 can be pressurized with compressed air, which increases the supporting force of the ejector 16 for the anchor head 10 by a corresponding action on the anchor head 10. In addition, with such pressurized air, the receptacle 4 is flushed with compressed air under a cleaning effect. It must be expected that concrete may penetrate into the receptacle 4.
    To apply compressed air to the receptacle 4, according to the exemplary embodiment shown, the molded attachment 7 is provided with a compressed air line 19. The compressed air can also be supplied to the receptacle 4 in another way.
    权利要求:
    Claims (4)
    [1]
    1. Device for holding a lifting anchor (6) for a workpiece made of concrete during the vibration compression of the concrete introduced into a mold for workpiece production with a on a mold wall (1) provided frame (2) which one by means of an actuator (12) transversely to Molded wall (1) between a working position and a demoulding position displaceable receptacle (4) for the anchor head (10) of the lifting anchor (6), which closes an opening (8) in the mold wall (1) in the working position of the receptacle (4) , passes through a recess (9) in the workpiece forming molding attachment (7), and with an electromagnet (13) provided in the receptacle (4) and coaxial to the lifting anchor (6) and magnetically holding the anchor head (10) on the end face, characterized in that the core (14) of the electromagnet (13) forms a displacement guide for an ejector (16) which strikes the armature head (10) at the end and is connected to an actuator (17).
    [2]
    2. Device according to claim 1, characterized in that the actuator (17) for the ejector (16) of the receptacle (4) for the anchor head (10) is assigned.
    [3]
    3. Device according to claim 1 or 2, characterized in that the actuator (17) for the ejector (16) comprises a compressed air cylinder (18).
    [4]
    4. Device according to one of claims 1 to 3, characterized in that the receptacle (4) for the anchor head (10) can be acted upon with compressed air.
    类似技术:
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    同族专利:
    公开号 | 公开日
    WO2020097649A1|2020-05-22|
    AT521682B1|2020-04-15|
    EP3880421A1|2021-09-22|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE3413291A1|1984-04-09|1985-10-17|Wagener & Polascheck Vertriebsgesellschaft mbH, 4800 Bielefeld|Apparatus for inserting transport tie elements into precast concrete parts|
    DE8534383U1|1985-12-06|1986-06-26|Georg Prinzing GmbH & Co KG Betonformen- und Maschinenfabrik, 7902 Blaubeuren|Device for inserting and setting in concrete an anchoring bolt|
    EP0230542A1|1985-12-06|1987-08-05|Georg Prinzing GmbH & Co. KG Betonformen- und Maschinenfabrik|Method and apparatus for introducing and embedding in concrete an anchor bolt in a concrete element|
    JPH0847916A|1994-08-04|1996-02-20|Takeda Kogyo Kk|Anchor-holding fixture in forming of concrete product|
    DE29603972U1|1996-03-04|1996-06-05|Philipp Gmbh Geb|Recess body for precast concrete parts|
    JPH1136583A|1997-07-23|1999-02-09|Kazuo Nakamura|Insert for form|CN112518979A|2020-11-27|2021-03-19|顾永明|Fixed installation method of pre-buried channel in segment mould|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50969/2018A|AT521682B1|2018-11-12|2018-11-12|Device for holding a lifting anchor for a concrete workpiece|ATA50969/2018A| AT521682B1|2018-11-12|2018-11-12|Device for holding a lifting anchor for a concrete workpiece|
    PCT/AT2019/060377| WO2020097649A1|2018-11-12|2019-11-06|Device for retaining a lifting anchor for a workpiece made of concrete|
    EP19802040.6A| EP3880421A1|2018-11-12|2019-11-06|Device for retaining a lifting anchor for a workpiece made of concrete|
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