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    • 18. 发明公开
    • HYDRAULIC CYLINDER
    • EP3152445A4
    • 2018-02-21
    • EP15807025
    • 2015-06-08
    • THORDAB IND INNOVATION AB
    • GUSTAVSSON ROGER
    • F15B11/036E02F9/22F15B1/04F15B15/14F15B15/22
    • E02F9/2217F15B1/04F15B15/1409F15B15/1457F15B15/227
    • Hydraulic cylinder (1) comprised of a cylinder housing (2), with a cylindrical inner space, and in that at least one movably arranged first piston (3) which partitions the hydraulic cylinder into at least one first chamber (9) and at least one second chamber (10). The first piston (3) is comprised of at least one piston head (7) and at least one piston rod (8) whose piston rod (8) in the piston rod's (8) axial direction, is provided with at least one inner space (15) in which at least one second piston (16) runs, and that the hydraulic cylinder (1) is comprised of at least one third piston (28) placed in the inner space (15) in the piston rod (8). The piston partitions the inner space (15) in at least one first chamber (29) and in at least one second chamber (30) of which at least one of the chambers is filled with a gas alternatively gases. The hydraulic cylinder is comprised of an inner space (34) in which the second piston's (16) end is suitable to be inserted into and moved out of. The piston (16) seals in the inserted position against at least one seal (36) whereby the inner space (34) is separated from the chamber (9) by the seal (36). The piston (16) is positioned in the inserted position until it is released through a flow via at least one conduit (37) that connects the chamber (9) and the inner space (34). The conduit (37) may be closed and opened via at least one valve (38).
    • 19. 发明公开
    • PNEUMATIC CYLINDER WITH DAMPER SLEEVE
    • 带防尘套的气动缸
    • EP3221596A1
    • 2017-09-27
    • EP15818039.8
    • 2015-11-16
    • Camozzi S.p.A. Societa' Unipersonale
    • BICELLI, SebastianBRAGA, DarioBOTTARELLI, FabioMOROZOV, Vladimir
    • F15B15/22
    • A pneumatic cylinder (100) comprises a piston, axially mobile inside a casing. The pneumatic cylinder comprises at least one damper sleeve (10) suitable to reduce the intensity of the impact that occurs when the piston (20) arrives in abutment against the head (104, 105) of the casing. The damper sleeve (10) is provided with a front portion (14) provided with a plurality of through holes (60), extending in a radial direction, and a tapered wall (143) with a wall thickness which decreases toward a front end (144) of the damper sleeve (10). When the piston (20) approaches the end-stroke position, the pressurised air escapes towards the duct (108) through the holes (60) and a vent space (80) defined between the stem (21) of the piston (20) and an inner wall (141) of the front portion (14) of the sleeve (10).
    • 气缸(100)包括可在壳体内轴向移动的活塞。 气缸包括至少一个适于减小当活塞(20)抵靠壳体的头部(104,105)时发生的冲击的强度的减震套筒(10)。 阻尼套筒10具有设置有沿径向延伸的多个通孔60的前部14和具有朝向前端减小的壁厚的锥形壁143, 阻尼套筒(10)的内径(图144)。 当活塞(20)接近端部行程位置时,加压空气通过孔(60)和活塞(20)的杆(21)和活塞(20)之间限定的排放空间(80)朝向管道 套筒(10)的前部(14)的内壁(141)。