公开(公告)号：US20130209296A1

公开(公告)日：2013-08-15

申请号：US13811636

申请日：2011-06-21

申请人： Xiaogang Yi ,  Yongdong Liu ,  Bingbing Chen

发明人： Xiaogang Yi ,  Yongdong Liu ,  Bingbing Chen

IPC分类号： F04B7/04

CPC分类号： F04B7/04 ,  F15B15/222

摘要： A hydraulic oil cylinder has a cushion collar, which is sleeved in the cushion position of a piston rod and can axially slide along the piston rod. In the oil cylinder cavity between an oil hole of the rod cavity and the terminal position of the piston end surface of the rod cavity during the piston extending movement, a sealing end surface of the rod cavity is provided, which can block the cushion collar and contact with the first end surface of the cushion collar to form a sealing surface. At least a throttle oil channel is provided between the cushion collar and the piston rod.

摘要翻译： 液压油缸具有缓冲套环，其套在活塞杆的缓冲位置，并可沿活塞杆轴向滑动。 在活塞延伸运动期间，在杆腔的油孔和杆腔的活塞端面的终端位置之间的油缸腔中设置有杆腔的密封端面，其可以阻塞缓冲环和 与缓冲套环的第一端面接触以形成密封表面。 在缓冲套环和活塞杆之间至少设有节流油通道。

公开(公告)号：US09863407B2

公开(公告)日：2018-01-09

申请号：US13811594

申请日：2011-06-21

申请人： Xiaogang Yi ,  Yongdong Liu ,  Bingbing Chen

发明人： Xiaogang Yi ,  Yongdong Liu ,  Bingbing Chen

IPC分类号： F15B15/22 ,  F04B1/00

CPC分类号： F04B1/00 ,  F15B15/222

摘要： The present application discloses a hydraulic oil cylinder, of which a piston rod (3) is provided with at least two cushion collars (4, 11) which are axially slidable along the piston rod (3). Axial throttle oil channels (301a, 301b) are provided between the cushion collars (4, 11) and a piston (6). A first cushion collar (4) is provided with a sealing end face (401), and an end cover of a rod cavity (1) is provided with a sealing end face (101). The sealing end face (401) of the first cushion collar contacts with the sealing end face (101) of the end cover of the rod cavity to form a seal. Hydraulic oil within the rod cavity is discharged through one axial throttle oil channel (301a) to an oil passage B.

公开(公告)号：US20130199367A1

公开(公告)日：2013-08-08

申请号：US13811244

申请日：2011-06-21

申请人： Xiaogang Yi ,  Yongdong Liu ,  Bingbing Chen

发明人： Xiaogang Yi ,  Yongdong Liu ,  Bingbing Chen

IPC分类号： F15B15/20

CPC分类号： F15B15/20 ,  F15B15/222

摘要： A hydraulic oil cylinder has a buffer sleeve (4), a rodless cavity sealing end face (1-2) and at least one throttle oil channel (3-1). The buffer sleeve (4) is sleeved on an additional section (3a) of a piston rod in the rodless cavity (2-2) and axially slidable along the additional section (3a) of the piston rod. The rodless cavity sealing end face (1-2) is provided in an oil cylinder cavity between a rodless cavity oil passing hole (1-1) and the termination of the rodless cavity end face of the piston for the retraction process of the piston rod (3), and enables to block the buffer sleeve (4) and attach to the first end surface (4-1) of the buffer sleeve thereby forming a sealing surface.

摘要翻译： 液压油缸具有缓冲套筒（4），无杆腔密封端面（1-2）和至少一个节气门油通道（3-1）。 缓冲套筒（4）套在无杆空腔（2-2）中的活塞杆的附加部分（3a）上，并且沿着活塞杆的附加部分（3a）可轴向滑动。 无杆腔密封端面（1-2）设置在无杆空腔通油孔（1-1）和活塞的无杆腔端面的终端之间的油缸腔中，用于活塞杆的回缩过程 （3），并且能够阻挡缓冲套筒（4）并附接到缓冲套筒的第一端面（4-1），从而形成密封表面。

公开(公告)号：US20130255245A1

公开(公告)日：2013-10-03

申请号：US13811594

申请日：2011-06-21

申请人： Xiaogang Yi ,  Yongdong Liu ,  Bingbing Chen

发明人： Xiaogang Yi ,  Yongdong Liu ,  Bingbing Chen

IPC分类号： F04B1/00

CPC分类号： F04B1/00 ,  F15B15/222

摘要： The present application discloses a hydraulic oil cylinder, of which a piston rod (3) is provided with at least two cushion collars (4, 11) which are axially slidable along the piston rod (3). Axial throttle oil channels (301a, 301b) are provided between the cushion collars (4, 11) and a piston (6). A first cushion collar (4) is provided with a sealing end face (401), and an end cover of a rod cavity (1) is provided with a sealing end face (101). The sealing end face (401) of the first cushion collar contacts with the sealing end face (101) of the end cover of the rod cavity to form a seal. Hydraulic oil within the rod cavity is discharged through one axial throttle oil channel (301a) to an oil passage B. A second cushion collar (11) is provided with a sealing end face (111), and an end cover of a rodless cavity (12) is provided with a sealing end face (121). The sealing end face (111) of the second cushion collar contacts with the sealing end face (121) of the end cover of the rodless cavity to form a seal. Hydraulic oil within the rodless cavity is discharged through another axial throttle oil channel (301b) to another oil passage A. The hydraulic oil cylinder can operate reliably and achieve a buffer function in a large load, high frequency operating condition, and thus has a longer operating life. And also, precision requirements for manufacturing the hydraulic oil cylinder are low, thereby facilitating production of the hydraulic oil cylinder. The present application also discloses a hydraulic cushion system, an excavator and a concrete pump truck which use the above hydraulic oil cylinder.

摘要翻译： 本申请公开了一种液压油缸，其中活塞杆（3）设置有沿着活塞杆（3）可轴向滑动的至少两个缓冲套环（4,11）。 轴向节流油通道（301a，301b）设置在缓冲套环（4,11）和活塞（6）之间。 第一缓冲环（4）设置有密封端面（401），并且杆腔（1）的端盖设置有密封端面（101）。 第一缓冲衬套的密封端面（401）与杆腔的端盖的密封端面（101）接触以形成密封。 杆腔内的液压油通过一个轴向节流油通道（301a）排放到油通道B上。第二缓冲套环（11）设有密封端面（111）和无杆空腔的端盖 12）设置有密封端面（121）。 第二缓冲衬套的密封端面（111）与无杆腔的端盖的密封端面（121）接触以形成密封。 无杆空腔内的液压油通过另一个轴向节流油通道（301b）排放到另一个油路A.液压油缸可以可靠运行，并在大负荷，高频运行状态下实现缓冲功能，从而具有更长的 使用寿命。 另外，液压油缸的制造精度要求低，从而便于生产液压油缸。 本申请还公开了使用上述液压油缸的液压缓冲系统，挖掘机和混凝土泵车。

公开(公告)号：US09394927B2

公开(公告)日：2016-07-19

申请号：US13811244

申请日：2011-06-21

申请人： Xiaogang Yi ,  Yongdong Liu ,  Bingbing Chen

发明人： Xiaogang Yi ,  Yongdong Liu ,  Bingbing Chen

IPC分类号： F15B15/20 ,  F15B15/22

CPC分类号： F15B15/20 ,  F15B15/222

摘要： A hydraulic oil cylinder has a buffer sleeve (4), a rodless cavity sealing end face (1-2) and at least one throttle oil channel (3-1). The buffer sleeve (4) is sleeved on an additional section (3a) of a piston rod in the rodless cavity (2-2) and axially slidable along the additional section (3a) of the piston rod. The rodless cavity sealing end face (1-2) is provided in an oil cylinder cavity between a rodless cavity oil passing hole (1-1) and the termination of the rodless cavity end face of the piston for the retraction process of the piston rod (3), and enables to block the buffer sleeve (4) and attach to the first end surface (4-1) of the buffer sleeve thereby forming a sealing surface.

摘要翻译： 液压油缸具有缓冲套筒（4），无杆腔密封端面（1-2）和至少一个节气门油通道（3-1）。 缓冲套筒（4）套在无杆空腔（2-2）中的活塞杆的附加部分（3a）上，并且沿着活塞杆的附加部分（3a）可轴向滑动。 无杆腔密封端面（1-2）设置在无杆空腔通油孔（1-1）和活塞的无杆腔端面的终端之间的油缸腔中，用于活塞杆的回缩过程 （3），并且能够阻挡缓冲套筒（4）并附接到缓冲套筒的第一端面（4-1），从而形成密封表面。