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公开(公告)号：US4854650A
公开(公告)日：1989-08-08
申请号：US177230
申请日：1988-04-04
IPC分类号： B62D55/112 , B62D55/30
CPC分类号： B62D55/30
摘要： A recoil and tensioning assembly for the track and idler of a self-laying track vehicle maintains a constant tensioning force on the endless track. The assembly provides recoiling of the idler wheel during shock loading of the idler wheel or during ingestion of foreign material between the track and the idler and drive wheels. The recoil and tensioning assembly includes a recoil member which telescopes into a cylinder and includes a first chamber filled with a compressible gas and a second chamber filled with a non-compressible oil. A floating piston separates the two chambers and serves to compress the gas during a recoil cycle. Conventional recoil systems for self-laying track-type vehicles utilize pre-compressed large diameter steel coil springs to resist recoiling during light loading of the idler wheel and to return the idler wheel to normal position after recoiling during heavy loading. These coil springs are quite bulky and heavy, require considerable space, and must be maintained in a pre-compressed state under large forces. This requires extremely sturdy spring retaining devices and special assembly and disassembly procedures. The subject recoil and tensioning assembly incorporates a compressible gas spring in place of the large coil steel spring, thereby requiring less space, less weight, and easier assembly and disassembly. The subject assembly maintains a constant tension force on the endless track and responds immediately to recoil situations.
摘要翻译： 用于自行铺设轨道车辆的轨道和惰轮的反冲和张紧组件在环形轨道上保持恒定的张紧力。 组件在惰轮的冲击加载过程中或者在轨道和惰轮和驱动轮之间摄取异物期间，提供惰轮的反冲。 反冲和张紧组件包括反弹构件，该反冲构件伸缩到气缸中并且包括填充有可压缩气体的第一腔室和填充有不可压缩油的第二腔室。 浮动活塞分离两个室，用于在反冲循环期间压缩气体。 用于自行铺设轨道式车辆的常规后座系统使用预压缩大直径钢螺旋弹簧来抵抗惰轮的轻负载期间的反冲，并且在重负载期间回卷之后使惰轮回到正常位置。 这些螺旋弹簧相当庞大而重，需要相当大的空间，并且必须在大的力下保持在预压状态。 这需要非常坚固的弹簧保持装置和特殊的组装和拆卸程序。 主体反冲和张紧组件采用可压缩气弹簧代替大的钢卷弹簧，从而需要更少的空间，更少的重量，更容易的组装和拆卸。 主体组件在环形轨道上保持恒定的张力，并立即响应反冲情况。
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公开(公告)号：US4514014A
公开(公告)日：1985-04-30
申请号：US388765
申请日：1982-04-26
IPC分类号： B62D55/30
CPC分类号： B62D55/30
摘要： In a track laying vehicle (10) a track tensioning apparatus wherein a track engaging idler (20) wheel is mounted to a cross member (82) for adjustment to tension the track by a piston (68) and cylinder (62). The cross member (82) is in turn adjustably (106) mounted to opposing sides (26,27) of the vehicle track frame. Acting in conjunction with the track tensioning apparatus an accumulator (130,146) is provided and is in fluid communication with the piston (68) and cylinder (62). The accumulator (130,146) exerts a backpressure upon the fluid so that the idler (20) may recoil in response to excessive tension or shock upon the track.
摘要翻译： PCT No.PCT / US82 / 00545 Sec。 371日期1982年4月26日 102（e）日期1982年4月26日PCT提交1982年4月26日PCT公布。 公开号WO82 / 03803 轨道铺设车辆（10）中的轨道张紧装置，其中轨道接合惰轮（20）轮安装到横向构件（82），用于调节以通过活塞（68）张紧轨道，并且 气缸（62）。 横向构件（82）又可调整地安装到车辆轨道框架的相对侧面（26,27）上。 与履带张紧装置一起作用，设置蓄能器（130,146）并与活塞（68）和气缸（62）流体连通。 蓄能器（130,146）在流体上施加背压，使得惰轮（20）可以响应于轨道上的过度张力或冲击而反冲。
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公开(公告)号：US4082156A
公开(公告)日：1978-04-04
申请号：US701704
申请日：1976-07-01
CPC分类号： B62D55/125 , B62D55/13
摘要： A drive mechanism having a steering clutch assembly, a brake assembly, and a final drive assembly housed within a unitary housing defined by separable steering clutch assembly, brake assembly and final drive assembly housings removably secured together. The individual housings define flanges which may be secured together to form the unitary housing. The secured flanges may, in turn, be secured to another support structure of the drive mechanism.
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