公开(公告)号：US4688690A

公开(公告)日：1987-08-25

申请号：US837176

申请日：1986-03-07

申请人： Narahari Gattu ,  Bryan K. Bailey

发明人： Narahari Gattu ,  Bryan K. Bailey

IPC分类号： B66C23/68 ,  B66C23/693 ,  B66C23/70 ,  B66C23/06

CPC分类号： B66C23/705 ,  B66C23/708

摘要： Method and apparatus for extending a fly section of a telescopic crane boom which fly section does not have its own power unit to effect extension or retraction. The boom includes a base section, an inner powered section telescoping within the base section, an outer powered section telescoping within the inner section, and a non-self-powered fly section telescoping within the outer section. To extend the fly section, a load pin connecting the fly section to the outer section is released using a hydraulic cylinder mounted to the base section. The load pin is locked in the released position by a locking device. The outer section is then extended, taking the fly section with it. Upon full extension of the outer section, the inner end of the fly section is latched to the inner section or base section by latch pins actuated by a hydraulic cylinder. The outer section is then retracted, exposing the fly section and unlocking the load pin from its released position. The load pin then simply slides along the bottom of the fly section until, upon full retraction, the load pin snaps into a hole at the inner end of the fly section to prevent relative motion of the fly section and the outer section. The fly section is then unlatched from the inner section or base section. At this point the outer section and inner section may be independently operated, with the fly section in fully extended position. The fly section is then retracted by basically reversing the procedure. A circuit is also provided so as to prevent both the load pin and the latch pins from being disengaged simultaneously unless the fly section is fully retracted within the outer section.

摘要翻译： 用于延伸伸缩起重机吊臂的飞行部分的方法和装置，其中飞行部分没有其自己的动力单元来实现延伸或缩回。 起重臂包括基部，内部动力部分，其在基部内伸缩，外部动力部分伸缩在内部部分内，非自动动力部分可在外部部分伸缩。 为了延长飞行部分，使用安装到基部的液压缸来释放将飞翼部分连接到外部部分的负载销。 负载销通过锁定装置锁定在释放位置。 外部部分然后延伸，带着飞行部分。 在外部部分完全延伸之后，飞行部分的内端通过由液压缸致动的闩锁销闩锁到内部部分或基部。 外部部分然后缩回，暴露飞行部分并且将负载销从其释放位置解锁。 负载销然后简单地沿着飞行部分的底部滑动，直到完全缩回时，负载销卡入飞行部分的内端处的孔中，以防止飞行部分和外部部分的相对运动。 然后，飞行部分从内部部分或基部分解开。 此时，外部部分和内部部分可以独立地操作，而飞行部分处于完全伸出位置。 然后通过基本上逆转程序来缩回飞行部分。 还提供电路，以便防止负载销和闩锁销同时脱开，除非飞行部分完全缩回到外部部分内。

公开(公告)号：US4492312A

公开(公告)日：1985-01-08

申请号：US393985

申请日：1982-06-30

申请人： Darwin N. Poock

发明人： Darwin N. Poock

IPC分类号： B66C23/693 ,  B66C23/82 ,  B66C23/04 ,  B66C7/00 ,  B66C23/56

CPC分类号： B66C23/823

摘要： An apparatus is disclosed for maintaining a predetermined mast-boom working angle of a pendant supported boom substantially constant during extension and retraction of the boom. One embodiment of the invention includes control means connected between the boom and the mast for detecting slight angular changes and actuating power means for paying out or drawing in sufficient pendant to return the mast-boom angle to a predetermined angle. Another embodiment utilizes electrical controls having a first potentiometer capable of detecting linear changes in the effective boom supporting length of the pendant and another potentiometer for detecting linear changes in the length of the boom, said potentiometer sending output signal ratios which vary from a predetermined output signal ratio for actuating power means that takes up or pays out sufficient pendant to return the boom to the predetermined mast-boom working angle and returns the output signal ratio to said predetermined ratio.

公开(公告)号：US4492311A

公开(公告)日：1985-01-08

申请号：US293729

申请日：1981-08-17

申请人： Robert A. Rathe

发明人： Robert A. Rathe

IPC分类号： B66C23/693 ,  B66C23/70 ,  B66C7/00 ,  B66C23/04 ,  B66C23/56

CPC分类号： B66C23/701 ,  B66C23/708

摘要： A coupling and latching mechanism for a multisection extensible boom that includes a manual section and is operable from a remote location such as the cab of a crane. The mechanism includes pairs of spaced jaw type couplings secured to adjacent boom sections and adapted to be selectively coupled to the piston rod or the like of an extensible power means for operating the boom either with the manual section extended or retracted. Remotely controlled latch means are provided to latch the manual section in a plurality of extended positions, or in a retracted position.

摘要翻译： 一种用于多段可伸缩起重臂的联接和闭锁机构，其包括手动部分，并且可从诸如起重机的驾驶室的远程位置操作。 该机构包括一对隔开的卡爪式联轴器，其固定到相邻的悬臂部分，并且适于被选择性地联接到活塞杆或类似的可伸展动力装置，以在手动部分伸出或缩回的情况下操作动臂。 提供遥控锁定装置以将手动部分锁定在多个延伸位置或缩回位置。

公开(公告)号：US4460098A

公开(公告)日：1984-07-17

申请号：US393984

申请日：1982-06-30

申请人： Terrance C. Scherman

发明人： Terrance C. Scherman

IPC分类号： B66C23/693 ,  B66C23/82 ,  B66C23/04

CPC分类号： B66C23/82

摘要： A pendant control system for pendant supported multi-section telescopic boom is disclosed for paying out or hauling in sufficient pendant rope in response to detecting changes in the boom-mast angle from a desired angle Y thereby preventing the free end of the boom from raising due to extension and dropping due to retraction of the boom when the outer end of the boom is supported by pendant ropes. The system also provides means for pivoting the mast between a raised boom supporting position and a lowered transport position while maintaining tension on the pendant lines.

摘要翻译： 公开了一种用于吊坠支撑的多段伸缩臂的吊坠控制系统，用于响应于从期望的角度Y检测到起重臂桅杆角度的变化而支付或拖运足够的吊坠，从而防止吊杆的自由端升高 当悬臂的外端由吊坠绳索支撑时，由于吊杆的缩回而延伸和下降。 该系统还提供用于在升高的吊臂支撑位置和下降的运送位置之间枢转桅杆同时保持吊坠线上的张力的装置。

公开(公告)号：US4350255A

公开(公告)日：1982-09-21

申请号：US162600

申请日：1980-06-24

申请人： Helmut Blase ,  Arend Hogemann ,  Dieter Schulze

发明人： Helmut Blase ,  Arend Hogemann ,  Dieter Schulze

IPC分类号： B66C23/687 ,  B66C23/693 ,  B66C23/70 ,  B66C23/06

CPC分类号： B66C23/705

摘要： A telescopic, mobile crane comprising, a first base member pivotally mounted on a carriage, a second telescopic member telescopically engaged with the first member, an idle or manual member telescopically engaged to the second member and a drive piston and cylinder unit connected between the first and second members for extending the second member from the first member. An arresting apparatus is connected between the piston and cylinder arrangement and the idle member for extending the idle member. When the idle member is extended, the first and second members are locked to each other by a pawl and pin arrangement and the second member is disengaged from the piston and cylinder arrangement. After the idle member is extended, the first and second members are unlocked from each other to permit the extension of the second member.

摘要翻译： 一种伸缩式移动式起重机，包括：可枢转地安装在滑架上的第一基座构件，与所述第一构件可伸缩地接合的第二伸缩构件，与所述第二构件可伸缩地接合的怠速或手动构件;以及驱动活塞和气缸单元， 以及用于从第一构件延伸第二构件的第二构件。 在活塞和气缸装置之间连接有止动装置和用于延伸空转构件的空转构件。 当怠速构件被延伸时，第一和第二构件通过棘爪和销排列彼此锁定，并且第二构件与活塞和气缸装置分离。 在空闲构件被延伸之后，第一和第二构件彼此解锁以允许第二构件的延伸。

公开(公告)号：US4133411A

公开(公告)日：1979-01-09

申请号：US767828

申请日：1977-02-11

申请人： Walter R. Curb

发明人： Walter R. Curb

IPC分类号： B66C23/693 ,  B66F11/04

CPC分类号： B66F11/046

摘要： An extension and retraction mechanism for a three section extensible boom is disclosed utilizing an internally disposed hydraulic cylinder connected between a stationary boom section and an intermediate boom section with a cable connection located entirely interior of the boom having opposite ends anchored to opposite ends of the stationary section with the cable routed around sheaves on the moving end of the hydraulic cylinder and a base end of the intermediate boom section with a cable attachment to the base end of the inner boom section, the inner boom section being the most extensible boom section.

摘要翻译： 公开了一种用于三段可伸缩臂的延伸和缩回机构，其利用内部设置的液压缸连接在固定悬臂部分和中间悬臂部分之间，液压缸具有位于悬臂的整个内部的电缆连接件，该悬臂具有相对的端部，锚固到固定的相对端 所述电缆布置在所述液压缸的移动端上的滑轮周围，并且所述中间悬臂部分的基端具有连接到所述内部悬臂部分的所述基端的电缆，所述内部悬臂部分是所述可伸缩臂部分。

公开(公告)号：US4132041A

公开(公告)日：1979-01-02

申请号：US845916

申请日：1977-10-27

申请人： Bernardus C. Van den Broek

发明人： Bernardus C. Van den Broek

IPC分类号： B66C23/693 ,  B66C23/70 ,  F16B7/10 ,  E04H12/34

CPC分类号： B66C23/706 ,  F16B7/10

摘要： A telescopic boom assembly including first and second telescoping members. The assembly employs rack and pinion telescoping mechanisms which are driven by hydraulically controlled piston and cylinder members. The combination provides positive and precise positioning of the telescoping members and extremely smooth movement thereof.

摘要翻译： 包括第一和第二伸缩构件的伸缩臂组件。 该组件采用由液压控制的活塞和气缸构件驱动的齿条和小齿轮伸缩机构。 该组合提供伸缩构件的正确和精确的定位并且其非常平滑的运动。

公开(公告)号：US3921819A

公开(公告)日：1975-11-25

申请号：US49226574

申请日：1974-07-26

申请人： KIDDE & CO WALTER

发明人： SPAIN STANLEY R

IPC分类号： B66C23/42 ,  B66C23/693 ,  B66C23/70 ,  B66C23/62

CPC分类号： B66C23/708 ,  B66C23/705 ,  Y10T403/32516

摘要： The manual fly section of a multi-section telescopic crane boom is extended and retracted through the cooperative use of an extensible and retractable plunger on one of the boom extension cylinders and a manual locking pin insertable through registering openings of the fly section and outer mid-section of the telescopic boom. The latching plunger cooperates with a notched latch bar attached to the interior of the manual fly section and the plunger is actuated manually from the exterior of the boom by a rotary screw mechanism.

摘要翻译： 多段可伸缩起重机吊臂的手动飞行部分通过在其中一个悬臂延伸缸上的可伸缩的柱塞的协同使用而延伸和缩回，以及手动锁定销，可通过将飞行部分和外部中间部分 伸缩臂的一部分。 闩锁柱塞与附接到手动飞行部分内部的切口闩锁配合，并且柱塞通过旋转螺杆机构从动臂的外部手动地致动。

公开(公告)号：US3913756A

公开(公告)日：1975-10-21

申请号：US44200674

申请日：1974-02-11

申请人： GRANT INC LOUIS A

发明人： BARRON GEORGE E ,  PAVONE HARRY

IPC分类号： B66C23/693 ,  B66C23/697 ,  C21C5/46 ,  F27D3/15 ,  B66C23/04

CPC分类号： C21C5/46 ,  F27D3/1563

摘要： The specification discloses a skimming mechanism used in steel mills for removing slag from the surface of the molten metal in a ladle, the mechanism comprising an extensible boom assembly pivotally mounted on a turntable and power means arranged for rotating the turntable and for pivotally moving the boom assembly in a vertical plane relative to the turntable. The boom assembly comprises telescoping tubular sections, adjustable anti-friction means supporting the inner tubular section within the outer tubular section, a power-actuated driving mechanism comprising cooperating sprocket wheels and roller chains for extending and retracting the inner boom section with respect to the outer boom section, and a skimming paddle comprising a scoop portion separably attached to a mounting bracket portion that is mounted on the outer end of the inner boom section.

摘要翻译： 本说明书公开了一种用于钢厂的用于从钢包中的熔融金属表面去除渣的撇渣机构，该机构包括可旋转地安装在转台上的可伸缩臂组件和用于使转盘旋转并用于枢转地移动吊臂的动力装置 在相对于转盘的垂直平面中组装。 动臂组件包括伸缩管状部分，支撑外部管状部分内部管状部分的可调节的抗摩擦装置，包括配合的链轮和滚子链的动力驱动驱动机构，其用于相对于外部管状部分伸出和缩回内部吊杆部分 悬臂部分以及包括可分离地附接到安装在内部悬臂部分的外端上的安装支架部分的铲斗部分的撇渣桨。

公开(公告)号：US3842985A

公开(公告)日：1974-10-22

申请号：US31558472

申请日：1972-12-15

申请人： HARNISCHFEGER CORP

发明人： SVEDE G

IPC分类号： B66C23/687 ,  B66C23/693 ,  B66C23/70 ,  B66C23/04

CPC分类号： B66C23/708 ,  B66C23/705

摘要： Means for extending and retracting a section of a multisection telescopic crane boom that lacks its own extend-retract hydraulic cylinder are disclosed. Such means comprise a boom having a base section, an inner mid section and hydraulic cylinder therefor, an outer mid section and hydraulic cylinder therefor, a fly section and hydraulic cylinder therefor, and a manual section. Two solenoid operated tapered pins are mounted in longitudinally spaced apart relationship on the manual section. The forward pin cooperates with a forward pin hole and a rearward pin hole in the fly section. The rear pin cooperates with a pin hole in the cylinder for the outer mid section. Extending the manual section for use (assuming) all movable sections and cylinders retracted) involves: extending the fly section with the manual section pinned thereto; energizing both solenoids to unpin the manual section from the fly section and to pin the former to the outer mid cylinder; retracting the fly section; and deenergizing both solenoids to unpin the manual section (now extended) to the fly section and to unpin the manual section from the outer mid cylinder. The method of retracting the manual section is the reverse of extending it.