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公开(公告)号：US11911883B2
公开(公告)日：2024-02-27
申请号：US17299677
申请日：2019-12-04
申请人： Tentec Limited
发明人： Edmund Joseph Lange
CPC分类号： B25B29/02 , B23P19/067
摘要： A hydraulic tensioner (1), comprising: abase (2); a piston (3) mounted for sliding motion relative to the base (2), the base (2) and the piston (3) defining a pressure space (4) therebetween and being arranged to be urged apart along an axis (8) upon introduction of a fluid into the pressure space (4), the tensioner (1) having an internal bore (6) along the axis (8) having first and second ends along the axis and comprising a threaded component having an internally threaded portion (7) at the first end and coupled to the piston (3); the tensioner (1) further comprising: a threaded stud (10) having an exterior thread which engages the internally threaded portion (7) of the threaded component; and a drive mechanism (12) arranged to transmit rotational motion from the second end of the internal bore (9) to the threaded stud; the tensioner being arranged such that rotational motion applied to the drive mechanism (12) at the second end causes rotation of the stud (10) relative to the threaded component, with the engagement of the exterior thread of the stud (10) and the internal thread of the threaded component causing the stud to move along the axis as it rotates.
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公开(公告)号：US20220032433A1
公开(公告)日：2022-02-03
申请号：US17299677
申请日：2019-12-04
申请人： Tentec Limited
发明人： Edmund Joseph LANGE
IPC分类号： B25B29/02
摘要： A hydraulic tensioner (1), comprising: abase (2); a piston (3) mounted for sliding motion relative to the base (2), the base (2) and the piston (3) defining a pressure space (4) therebetween and being arranged to be urged apart along an axis (8) upon introduction of a fluid into the pressure space (4), the tensioner (1) having an internal bore (6) along the axis (8) having first and second ends along the axis and comprising a threaded component having an internally threaded portion (7) at the first end and coupled to the piston (3); the tensioner (1) further comprising: a threaded stud (10) having an exterior thread which engages the internally threaded portion (7) of the threaded component; and a drive mechanism (12) arranged to transmit rotational motion from the second end of the internal bore (9) to the threaded stud; the tensioner being arranged such that rotational motion applied to the drive mechanism (12) at the second end causes rotation of the stud (10) relative to the threaded component, with the engagement of the exterior thread of the stud (10) and the internal thread of the threaded component causing the stud to move along the axis as it rotates.
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公开(公告)号：US20220032434A1
公开(公告)日：2022-02-03
申请号：US17312917
申请日：2019-12-11
申请人： Tentec Limited
发明人： Adam Thomas LEE , Anthony SCRIVENS
摘要： A hydraulic tensioning apparatus for tensioning a threaded member (2) having a thread, comprising: a hydraulic tensioner (1), having a body (4) and a pressure space (13) for hydraulic fluid and having a thread engaging member (7) arranged to engage the thread of the threaded member (2) and to be urged away from the body (4) on introduction of hydraulic fluid into the pressure space (13) so as to tension the threaded member (2); a displacement sensor (11, 12) arranged to measure a linear displacement of the thread engaging member (7) relative to the base (4) and to provide an output indicative of the linear displacement; a rotation sensor (65, 66) arranged to determine a rotation of a nut (3) rotating on the threaded member (2) and arranged to produce output indicative of a rotation angle of the nut (3); and a control unit (80) arranged to take as inputs the outputs of the displacement sensor (11, 12) and the rotation sensor (65, 66), and to determine from the output of the displacement sensor (11, 12) a required angle of rotation of the nut (3) which accommodates for extension of the threaded member (2) due to being tensioned by the hydraulic tensioner (1).
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公开(公告)号：US12053867B2
公开(公告)日：2024-08-06
申请号：US17312917
申请日：2019-12-11
申请人： Tentec Limited
发明人： Adam Thomas Lee , Anthony Scrivens
CPC分类号： B25B29/02 , B23P19/067 , F15B21/02 , F15B2211/565
摘要： A hydraulic tensioning apparatus for tensioning a threaded member (2) having a thread, comprising: a hydraulic tensioner (1), having a body (4) and a pressure space (13) for hydraulic fluid and having a thread engaging member (7) arranged to engage the thread of the threaded member (2) and to be urged away from the body (4) on introduction of hydraulic fluid into the pressure space (13) so as to tension the threaded member (2); a displacement sensor (11, 12) arranged to measure a linear displacement of the thread engaging member (7) relative to the base (4) and to provide an output indicative of the linear displacement; a rotation sensor (65, 66) arranged to determine a rotation of a nut (3) rotating on the threaded member (2) and arranged to produce output indicative of a rotation angle of the nut (3); and a control unit (80) arranged to take as inputs the outputs of the displacement sensor (11, 12) and the rotation sensor (65, 66), and to determine from the output of the displacement sensor (11, 12) a required angle of rotation of the nut (3) which accommodates for extension of the threaded member (2) due to being tensioned by the hydraulic tensioner (1).
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公开(公告)号：US06892562B2
公开(公告)日：2005-05-17
申请号：US10393770
申请日：2003-03-07
摘要： A fastening apparatus adapted for use with a chock and a roll which locates within the chock such that a first end of the roll projects through and beyond a first end of the chock and a second end of the chock is located relative to the roll. The apparatus comprises a housing, a piston movably situated within the housing to allow a plurality of circumferentially spaced locating portions of the piston to be retained within the housing or to project through corresponding openings in the housing, pressure means provided within the housing to act on the piston, and at least one fastening member attached to the housing. In an operative position of the apparatus the housing is placed between the first end of the chock and the first end of the roll, and the pressure means acts between the piston, forcing the locating portions of the piston into location with the first end of the chock, and, forcing the at least one fastening member into location with the first end of the roll. Thus the first end of the roll is forced away from the first end of the chock and, with location of the second end of the chock relative to the roll, the chock and roll are fastened relative to each other.
摘要翻译： 一种紧固装置，适于与位于轴承座内的轴承座和辊一起使用，使得辊的第一端突出并且超过轴承座的第一端，并且轴承座的第二端相对于辊定位。 该装置包括壳体，可移动地位于壳体内的活塞，以允许活塞的多个周向间隔开的定位部分保持在壳体内或通过壳体中的相应开口突出，设置在壳体内的压力装置作用于 所述活塞以及附接到所述壳体的至少一个紧固构件。 在设备的操作位置，壳体被放置在轴承座的第一端和辊的第一端之间，并且压力装置作用在活塞之间，迫使活塞的定位部分与第一端部 并且，迫使所述至少一个紧固构件与所述辊的第一端部位置。 因此，辊的第一端被迫离开轴承座的第一端，并且随着轴承座的第二端相对于辊的位置，轴承座和辊相对于彼此紧固。
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