公开(公告)号：US3844023A

公开(公告)日：1974-10-29

申请号：US28841572

申请日：1972-09-12

申请人： SURRIBAS J ,  MORELL J

发明人： SURRIBAS J ,  MORELL J

IPC分类号： B66D1/00 ,  B21F20060101 ,  B66F1/08 ,  E01C20060101 ,  E04G21/12 ,  F15B20060101 ,  F15B11/036 ,  F16G11/12 ,  E21B19/00

CPC分类号： F16G11/12 ,  E04G21/121 ,  F15B11/0365 ,  Y10T29/49874

摘要： A hydraulic jack is disclosed for simultaneously tensioning a plurality of reinforcing cables anchored to a structure by means of an anchor plate and anchor wedges seated in corresponding seats in the anchor plate. An aligning template is provided for aligning the cables with a tensioning head assembly in the jack, thereby facilitating placement of the jack on the cables. The tensioning head assembly includes a gripping plate having a bore for each cable with each bore having a wedge-shaped seat to receive gripping jaws biased towards the seat. The assembly further includes an unclamping plate, mounted in one embodiment for movement with the gripping plate, provided for dislodging the gripping jaws from their seats to release the cables after tensioning. The tensioning head assembly is mounted at one end of an hydraulically actuated plunger and is urged away from the structure to seat the gripping jaws about the cables and thereafter tension the cables. An hydraulically actuated striker assembly operates to seat the anchor wedges in the anchor plate after tensioning is completed. In one embodiment, the aligning template is received within the front end of the jack and serves as a striker plate in transmitting the seating force from the striker assembly to the anchor wedges.

摘要翻译： 公开了一种液压千斤顶，用于通过锚定板锚固在结构上并同时张紧多个加固缆索，锚固楔位于锚板中相应的座中。 提供了对准模板，用于将电缆与插座中的张紧头组件对准，从而便于将插孔放置在电缆上。 张紧头组件包括夹板，其具有用于每个电缆的孔，每个孔具有楔形座，以容纳朝向座偏置的夹爪。 组件还包括一个松紧板，其安装在一个实施例中，用于与夹持板一起移动，用于将夹爪从其座位上移走，以在张紧之后释放电缆。 张紧头组件安装在液压致动的柱塞的一端，并被推离离结构以将夹爪安置在电缆周围，然后拉紧电缆。 液压致动的撞击器组件操作以在张紧完成之后将锚定楔定位在锚板中。 在一个实施例中，对准模板被容纳在千斤顶的前端内，并且用作撞击板，用于将来自撞击器组件的就座力传递到锚楔。