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公开(公告)号:US20050130777A1
公开(公告)日:2005-06-16
申请号:US10995959
申请日:2004-11-23
申请人: Arbogast Grunau, , Thomas Bertelshofer , Eduard Kratz , Christian Schafer , Harald Schafer , Dietmar Jager , Marco Orsi
发明人: Arbogast Grunau, , Thomas Bertelshofer , Eduard Kratz , Christian Schafer , Harald Schafer , Dietmar Jager , Marco Orsi
CPC分类号: F16H7/0848 , F16H2007/0806 , F16H2007/0859
摘要: A tensioner for a traction drive includes a cylinder arranged in a housing at a distance to a housing wall to thereby define an interior space which contains hydraulic fluid. A piston is received in the cylinder for back-and-forth movement and bounds a pressure chamber containing hydraulic fluid. The piston has a cylinder-distal end which is operatively connected to a spring-biased tension roller supported on a traction member. Formed between the piston and the cylinder is a leakage gap, and a reservoir for hydraulic fluid is provided in an area of the leakage gap to prevent ingress of air into the pressure chamber, when the traction drive is at a rest.
摘要翻译: 用于牵引驱动器的张紧器包括布置在与壳体壁一定距离的壳体中的气缸,从而限定包含液压流体的内部空间。 活塞被容纳在气缸中用于往复运动,并且限定了包含液压流体的压力室。 活塞具有气缸 - 远端,其可操作地连接到支撑在牵引构件上的弹簧偏压张力辊。 在活塞和气缸之间形成有泄漏间隙,并且在牵引驱动器处于静止状态时,在泄漏间隙的区域中设置用于液压流体的储存器,以防止空气进入压力室。
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公开(公告)号:US07686717B2
公开(公告)日:2010-03-30
申请号:US10995959
申请日:2004-11-23
申请人: Arbogast Grunau , Thomas Bertelshofer , Eduard Kratz , Christian Schäfer , Harald Schäfer , Dietmar Jäger , Marco Orsi
发明人: Arbogast Grunau , Thomas Bertelshofer , Eduard Kratz , Christian Schäfer , Harald Schäfer , Dietmar Jäger , Marco Orsi
CPC分类号: F16H7/0848 , F16H2007/0806 , F16H2007/0859
摘要: A tensioner for a traction drive includes a cylinder arranged in a housing at a distance to a housing wall to thereby define an interior space which contains hydraulic fluid. A piston is received in the cylinder for back-and-forth movement and bounds a pressure chamber containing hydraulic fluid. The piston has a cylinder-distal end which is operatively connected to a spring-biased tension roller supported on a traction member. Formed between the piston and the cylinder is a leakage gap, and a reservoir for hydraulic fluid is provided in an area of the leakage gap to prevent ingress of air into the pressure chamber, when the traction drive is at a rest.
摘要翻译: 用于牵引驱动器的张紧器包括布置在与壳体壁一定距离的壳体中的气缸,从而限定包含液压流体的内部空间。 活塞被容纳在气缸中用于往复运动,并且限定了包含液压流体的压力室。 活塞具有气缸 - 远端,其可操作地连接到支撑在牵引构件上的弹簧偏压张力辊。 在活塞和气缸之间形成有泄漏间隙,并且在牵引驱动器处于静止状态时,在泄漏间隙的区域中设置用于液压流体的储存器,以防止空气进入压力室。
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公开(公告)号:US6106424A
公开(公告)日:2000-08-22
申请号:US952422
申请日:1997-11-18
申请人: Eduard Kratz
发明人: Eduard Kratz
CPC分类号: F16H7/0836 , F16H7/0848 , F16J3/046 , F16H2007/0806 , F16H2007/0812 , F16H2007/0859 , F16H2007/0891
摘要: A hydraulic tensioner for a traction drive is provided having a spring-loaded piston (8) guided for longitudinal motion in a cylinder (6), in which tensioner, a piston motion causes an exchange of volume between a high pressure chamber (9) arranged in the cylinder (8) and a hollow space (4) which is partly filled with hydraulic medium, and, depending on a direction of motion of the piston (8), said exchange of volume can take place through a one-way valve (15), the tensioner further comprising a bellows seal (18) which is arranged between the piston (8) or the piston housing (10) at one end, and the outer housing (2) at a second end and follows the longitudinal motion of the piston (8) while bearing under pre-stress against the outer housing (2) and against the radially inward stepped piston housing (10). The bellows seal (18) of the invention is radially pre-stressed towards the piston housing (10) and/or the outer housing (2) so that, on occurrence of an overpressure in the hollow space (4), an automatic reduction of pressure of the air enclosed in the hollow space (4) can take place.
摘要翻译: PCT No.PCT / EP96 / 00634 Sec。 371日期:1997年11月18日 102(e)1997年11月18日PCT PCT 1996年2月14日PCT公布。 公开号WO96 / 36823 日本1996年11月21日提供了一种用于牵引驱动器的液压张紧器,其具有被引导用于在气缸(6)中纵向运动的弹簧加载活塞(8),在所述弹簧加载的活塞中,张紧器,活塞运动导致在高压 布置在气缸(8)中的腔室(9)和部分地填充有液压介质的中空空间(4),并且根据活塞(8)的运动方向,所述容积更换可以通过 单向阀(15),张紧器还包括波纹管密封件(18),其在一端设置在活塞(8)或活塞壳体(10)之间,并且外壳体(2)在第二端处 遵循活塞(8)的纵向运动,同时承受预应力抵靠外壳体(2)并且抵靠径向向内的阶梯式活塞壳体(10)。 本发明的波纹管密封件(18)朝向活塞壳体(10)和/或外壳体(2)径向预应力,使得在中空空间(4)中出现过压时,自动降低 可以发生封闭在中空空间(4)中的空气的压力。
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4.
公开(公告)号:US4169054A
公开(公告)日:1979-09-25
申请号:US943995
申请日:1978-09-20
CPC分类号: C01B17/90 , C01B17/88 , Y10S159/19
摘要: Concentrated sulphuric acid aqueous solutions, stably clear through the time, are obtained starting from diluted sulphuric acid aqueous solutions containing Mg and possibly other impurities such as Fe, Al, Cr, V and Mn, by evaporation concentration. The process is characterized in that, before filtering, the slurry obtained by evaporation concentration, is cooled down to 10.degree.-25.degree. C. and maintained at this temperature for not less than 12 hours.
摘要翻译: 通过蒸发浓缩从含有Mg和可能的其他杂质如Fe,Al,Cr,V和Mn的稀硫酸水溶液开始获得浓缩的硫酸水溶液,从而稳定地清除。 该方法的特征在于,在过滤之前,将通过蒸发浓缩获得的浆液冷却至10 -25℃,并在该温度下保持不少于12小时。
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