The invention relates to a crane for a marine vessel. According to the invention, the crane is provided with a boom restraint, the boom restraint being a hydropneumatic boom restraint (108) for reducing upward pivoting of the boom (105) when the boom is in the top region, the boom restraint (108) comprising: a plurality of hydraulic cylinders (127), each having a hydraulic circuit and a cylinder rod (119), the cylinder rod (119) having a cylinder head (128), the hydraulic cylinder (127) is mounted on the crane structure (104), the cylinder head (120) is directed towards a boom (105) of the crane (101), preferably the hydraulic cylinder (127) is mounted on a bracket (105) of the crane structure (104); a catch (121) corresponding to each hydraulic cylinder (127), where each catch is mounted to the boom (105) and configured to receive a cylinder head (120) of the respective hydraulic cylinder (127), and each catch is configured to lock the cylinder head, preferably pivotably, relative to the boom when the boom is pivoted upward in the top region; a gas damper (128) for each hydraulic cylinder (127), where each gas damper (128) is mounted to a respective hydraulic cylinder (127) and is connected to a hydraulic circuit of the respective hydraulic cylinder by means of a media separator, where the gas damper (128) forces the hydraulic cylinder in an extended position, where the gas damper (128) is connected to the hydraulic circuit of the respective hydraulic cylinder by means of the media separator. The volume ratio between the hydraulic cylinder (127) and the gas dampers (128) is such that the hydraulic cylinder (127) acts as a progressive spring, for example, each gas damper has a size in the range of 1000 liters to 1400 liters, for example 1200 liters, and each hydraulic cylinder (127) has a size in the range of 800 liters to 1000 liters, for example 900 liters, preferably the ratio between the volume of the gas damper and the volume of the associated hydraulic cylinder is 4: 3.
本发明涉及用于海上船舶的起重机。根据本发明,起重机设置有吊杆约束件,其中,吊杆约束件是液压气动吊杆约束件(108),其用于在吊杆处于顶部区域时减少吊杆(105)的向上枢转,其中,吊杆约束件(108)包括:多个液压缸(127),每个液压缸具有液压回路和缸杆(119),所述缸杆(119)具有缸头(128),其中,液压缸(127)安装于起重机结构(104),缸头(120)指向起重机(101)的吊杆(105),优选地液压缸(127)安装于起重机结构(104)的支架(105);捕获器(121),其对应于每个液压缸(127),其中,每个捕获器安装于吊杆(105)并且配置为容纳相应的液压缸(127)的缸头(120),并且当吊杆在顶部区域向上枢转时,每个捕获器配置为相对于吊杆锁定缸头,优选能够枢转地锁定缸头;气体缓冲器(128),其用于每个液压缸(127),其中,每个气体缓冲器(128)安装至相应的液压缸(127),并且通过介质分离件连接至相应的液压缸的液压回路,其中,气体缓冲器(128)迫使液压缸处于延伸位置,其中,液压缸(127)与气体缓冲器(128)之间的体积比使得液压缸(127)充当渐进式弹簧,例如,每个气体缓冲器的尺寸在1000升至1400升的范围内,例如1200升,并且每个液压缸(127)的尺寸在800升至1000升的范围内,例如900升,优选地,气体缓冲器的体积与关联液压缸的体积之间的比为4:3。
Heavy-duty crane
重型起重机
2023-03-31
Patent
Electronic Resource
Chinese
IPC: | B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS |
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