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发明公开
CN106102991A 张紧器 有权

张紧器
摘要：
一种用于螺纹构件的张紧器，通常是液压张紧器，所述张紧器包括：基座(4)和活塞(6)，它们之间界定压力空间(13)，所述基座(4)和活塞(6)布置成在流体引入到所述压力空间(13)之后沿着轴线(17)被迫分开；以及螺纹结合构件(7)，其包括套筒形式的主体部分(8)并且具有与螺纹构件(2)结合的螺纹内部(30)和设置突出部的活塞结合部分(9)；其中所述活塞(6)靠在所述突出部上，从而使得当由于流体引入到所述压力空间(13)中而被迫与所述基座(4)分开时，所述活塞(6)在所述突出部上施加力；所述张紧器进一步包括位移传感器，其被布置成确定所述螺纹结合构件的所述主体部分和所述基座的相对位置，所述位移传感器包括设置在所述基座(4)上的第一部件(12)和设置在所述主体部分(8)上的第二部件(11)；通常，所述位移传感器是磁编码器。
摘要（英）：

A tensioner, typically hydraulic, for threaded members, the tensioner comprising: a base (4) and a piston (6) defining a pressure space (13) therebetween, the base (4) and piston (6) being arranged to be urged apart along an axis (17) upon introduction of a fluid into the pressure space (13); and a thread-engaging member (7), comprising a body portion (8) of the form of a sleeve and having a threaded interior (30) for engagement with a threaded member (2) and a piston engaging portion (9) carrying a protrusion; in which the piston (6) bears against the protrusion such that the piston (6) exerts a force on the protrusion when urged apart from the base (4) by the introduction of fluid into the pressure space (13); the tensioner further comprising a displacement sensor arranged to determining the relative position of the body portion of the thread- engaging member and the base, the displacement sensor comprising a first part (12) carried on the base (4) and a second part (11) carried on the body portion (8); typically the displacement sensor is a magnetic encoder.

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