US3888536A - Automatic {13 {0 self contained {13 {0 light weight spreader bar - Google Patents

Automatic {13 {0 self contained {13 {0 light weight spreader bar Download PDF

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US3888536A
US3888536A US437566A US43756674A US3888536A US 3888536 A US3888536 A US 3888536A US 437566 A US437566 A US 437566A US 43756674 A US43756674 A US 43756674A US 3888536 A US3888536 A US 3888536A
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hydraulic
spreader
spreader frame
power source
assembly
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US437566A
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Peter Durenec
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US Department of Army
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US Department of Army
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/62—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled
    • B66C1/66—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled for engaging holes, recesses, or abutments on articles specially provided for facilitating handling thereof
    • B66C1/663—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled for engaging holes, recesses, or abutments on articles specially provided for facilitating handling thereof for containers

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  • While some existing devices do connect cargo envelopes to a helicopter. they are designed and built to meet only a specific parameter.
  • the primary object of the invention is to provide a spreader bar assembly which is compatible with helicopter lift characteristics in general.
  • Another object of the invention is to provide a spreader bar assembly that can be used with any crane. any aircraft, or even with a forklift equipped with a hooking device having the required lifting capability.
  • Still another object of the invention is to provide an assembly which is comparatively lightweight /2 ton). entirely self-contained and generates its own energy source for operation
  • a further object of the invention is to provide a spreader bar assembly which is fully automatic in its locking and unlocking to the cargo container and which additionally provides a visual indication of whether the container is in a locked or unlocked condi tion.
  • FIG. I is a perspective view of u spreader frame of the preferred embodiment of the in ⁇ cntion using single point suspension.
  • FIG. 2 is a schematic diagram of the logic used in the automatic hydraulic control system of the present invention.
  • the twist locks 13 have indicators painted green for open position and red for closed position, and are located in such a way that they are visible to an aircraft operator. Two additional visual indicators are located on the long sides of the frame and have the same color coding. The indicators serve a dual purpose. They are employed as leverage controls for the manual override. and they also show the ground operator the actual position of the locks l3. Therefore. the safety and security of the spreader assembly is protected by three controls: automatic, manual and manual/hydraulic.
  • the operator aligns the spreader assembly above the container top and starts to lower the assembly.
  • the twist locks I3 are in the open position and all indicators show green.
  • the two sensors 17 are compressed and send a signal to the logic 16 which causes the twist locks 13 to simultaneously close and the visual indicators to change to red.
  • the sensors I7 are not in contact with the corner fittings.
  • an adjustable built-in delay can be set from zero to five seconds.
  • FIG. 2 there is shown a logic diagram of the automatiic control system.
  • the realization of the diagram as actual hardware can be accomplished by electrical. pneumatic. or hydraulic means.
  • hydraulic means was chosen because of simplicity. reliability and ruggedness.
  • the elements of the logic diagram take the form of hydraulic valves.
  • the actuator I8 is controlled by a three-way center-off valve with spring return to the center position. whose spool is actuated by a pilot cylinder in each direction.
  • the OR gate 23 is a two-input shuttle valve permitting flow from either input to the output line. but preventing feedback from one to the other.
  • the two-input AND gates 24 are pilot actuated spring return normally off valves.
  • the multiple input AND gates 25 can be built up as assemblies of two or more such valves
  • the sensors are mechanically actuated directional control valves with a spring return and toggle positioning mechanism. fitted for actuation by push rod. lever or cam follower roller as the mechanical design may dictate.
  • the flip-flop element 26 of the logic design is a double pilot two position directional control valve with a toggle positioning mechanism that holds the control spool in one open po sition until pressure is applied to the pilot cylinder on that side and then snaps the spool over into the oppo site open position.
  • the inverting element 27 may be a two position pilot actuated directional control valve.
  • the delay 28 is a small accumulator with one or more flow restriction valves to control its rate of pressure build-up and drainv
  • An additional pilot actuated control valve can be included as a comparator to insure that the delayed signal is generated when the pressure in the accumulator reaches a definite fraction of a reference pressure existing elsewhere in the system.
  • a spreader bar assembly including:
  • a hydraulic power source assembly embodying a hy draulic piston means adapted such that selected movement of said piston means readies said hydraulic power source assembly for operation;
  • hydraulic control means for locking and unlocking the corner attachments of the spreader frame.
  • said hydraulic control means including safety interlock means disposed at each point of attachment and responsive to the relative position of said spreader frame with respect to a cargo container.
  • said control means adapted to lock and unlock corner at tachments substantially simultaneously when a selected relative positioning of said spreader frame with respect to a cargo container occurs and the spreader frame concurrently fully rests on the cargo container;
  • safety interlock means are load responsive means and include time delay means such that said safety interlock means react to a selected load less than the full weight of said spreader frame when said safety interlock means is subjected to said selected load over a selected period of time.
  • the apparatus of cliam 3 further including means for visually determining when said interlock means are secure.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Load-Engaging Elements For Cranes (AREA)

Abstract

A container handling system which includes a generally rectangular spreader bar having hydraulic control means for the purpose of locking and unlocking corner attachments to the spreader frame.

Description

I June 10, 1975 United States Patent IWI Durenec 294/67 R 4. 294/67 DA 294/81 SF 3.428.354 2/1969 Grif'fith 3.501.193 3/1970 Gruy 3.712661 [/1973 Strandm.v
3.767.250 10/1973 Ward l73| Assignec: The United States of America as Primary Examiner-Even C. Blunk Assislunl Examiner-Johnny D. Cherry a ti.
an S en m HM Mm U nW Attorney. Agent. or Firm-Robert P. Gibson; Nathan Edelberg Filed: Jan. 29, 1974 121 App]. No.: 437.566
ABSTRACT 294/82 SF: 294/67 DA Int. 1366c 1/66 n w f searchmmm 294 67 DA, A container handling system which includes a gener- 294/67 DB g[ 1 5 0 R 7 ally rectangular spreader bar having hydraulic control means for the purpose of locking and unlocking corner attachments to the spreader frame [56l References Cited UNITED STATES PATENTS 4 Claims, 2 Drawlng Figures 2.847245 8/1958 294/110 R PATENTED H 0 I975 3.888.536
SE'IEEI 2 POWER SOURCE ACTUATOR AcTuAToR CLOSED OPEN 28 DELAY AND 24 24 FLIP-FLOP A MATED 23 AND 25 AND 25 CLOSE OPEN AI TOMATK' SELF ('UNTAINIQI) LIGHT WEIGHT SPREADER [HR The invention described llcl'clll may he manufactured. used. and licensed by or for the government for governmental purposes without the payment to me of any royalties thereon BACKURUIND ()I 'I'Hl: INVENTION The present invention relates to equipment for lifting cargo containers by means of helicopters or various types of cranes such as a gantry crane. boom crane. straddle crane or the likev In the past the cargo industry has employed \tll'ititts equipment often referred to as spreader frames or spreader bars to transfer cargo from ship to shore or between ground locations. This equipment used with gantry cranes and boom cranes is constructed of struc tural steel which weighs from 1.5 tons for a manual fixed length unit to 7 tons for an adjustable length unit with retractable corner guides and self-leveling systems. This high weight has made such spreader bars incompatible with helicopter use. In addition. spreader frames of the past have not had the rapid pickup and release necessary to take full advantage of helicopter lift capability.
While some existing devices do connect cargo envelopes to a helicopter. they are designed and built to meet only a specific parameter.
SUMMARY OF THE INVENTION The primary object of the invention is to provide a spreader bar assembly which is compatible with helicopter lift characteristics in general.
Another object of the invention is to provide a spreader bar assembly that can be used with any crane. any aircraft, or even with a forklift equipped with a hooking device having the required lifting capability.
Still another object of the invention is to provide an assembly which is comparatively lightweight /2 ton). entirely self-contained and generates its own energy source for operation A further object of the invention is to provide a spreader bar assembly which is fully automatic in its locking and unlocking to the cargo container and which additionally provides a visual indication of whether the container is in a locked or unlocked condi tion.
BRIEF DESCRIPTION OF THE DRAWING The exact nature of the invention will be readily apparent from a consideration of the following specification relating to the annexed drawings in which:
FIG. I is a perspective view of u spreader frame of the preferred embodiment of the in\cntion using single point suspension; and
FIG. 2 is a schematic diagram of the logic used in the automatic hydraulic control system of the present invention.
DETAILED DESCRIPTION OF THI INVENTION Referring to Fl(i. I of the drawing. there is shown spreader frame II which is suspended from a single point by four carrying cables I2 which attach to the corners of frame II. l-ach of the carrying cables I2 is of s inch diameter teel. At each corner of spreader frame I I there is a t\\ ist lock I3 suitable to accommodate the dimensional requirements of an 8 X 8 X It) (ill foot container. From the single point suspension. at fifth line e\tends downward. This line 14 is not a carrying line. but serves to activate an automatic piston pump 15 which reacts to every slack of the activator line. Any vertical movement of the line 14 generates energy and transfers it to an accumulator 16. Any lifting movement reaching two feet of stroke develops enough energy to operate all four twist locks I3 thirty times full cycle. In addition. two of the four corners in diagonal location have a touch-down sensor I7. When both ofthe sensors are in complete contact with the corner fittings of the container. a signal will be dispatched through the hydraulic system to logic 16 where a flip-flop valve autt matically activates the hydraulic cylinder I8 and passes the force through shaft I9 and push rod 20 to the twist locks 13 with the assistance of the control valve 21 and reservoir 22. The hydraulic system begins charging the instant the spreader bar assembly is lifted because of the movement and its own weight by vertical motion.
The twist locks 13 have indicators painted green for open position and red for closed position, and are located in such a way that they are visible to an aircraft operator. Two additional visual indicators are located on the long sides of the frame and have the same color coding. The indicators serve a dual purpose. They are employed as leverage controls for the manual override. and they also show the ground operator the actual position of the locks l3. Therefore. the safety and security of the spreader assembly is protected by three controls: automatic, manual and manual/hydraulic.
In operation. the operator aligns the spreader assembly above the container top and starts to lower the assembly. The twist locks I3 are in the open position and all indicators show green. Upon contact of the spreader assembly with the four corner fittings of the container. the two sensors 17 are compressed and send a signal to the logic 16 which causes the twist locks 13 to simultaneously close and the visual indicators to change to red.
During transport, the sensors I7 are not in contact with the corner fittings. To prevent accidental sensor signals to the logic 16 which could be caused by vertical motion such as an air pocket or zero load. an adjustable built-in delay can be set from zero to five seconds. Upon arrival at destination and lowering. the spreader assembly must rest until the delay time is reached. Only when the slings 12 have the required slack will the twist locks 13 automatically open and the indicators turn green. Any vertical motion of the assembly charges the hydraulic system; therefore, energy not consumed is stored in the logic assembly 16 and the spreader is always ready for operation.
Referring now to FIG. 2, there is shown a logic diagram of the automatiic control system. The realization of the diagram as actual hardware can be accomplished by electrical. pneumatic. or hydraulic means. In the preferred embodiment. hydraulic means was chosen because of simplicity. reliability and ruggedness. In such a system the elements of the logic diagram take the form of hydraulic valves. The actuator I8 is controlled by a three-way center-off valve with spring return to the center position. whose spool is actuated by a pilot cylinder in each direction. The OR gate 23 is a two-input shuttle valve permitting flow from either input to the output line. but preventing feedback from one to the other. The two-input AND gates 24 are pilot actuated spring return normally off valves. which supply no output pressure unless they receive input pressure at both the normal inlet part and the pilot cylinder. The multiple input AND gates 25 can be built up as assemblies of two or more such valves The sensors are mechanically actuated directional control valves with a spring return and toggle positioning mechanism. fitted for actuation by push rod. lever or cam follower roller as the mechanical design may dictate. The flip-flop element 26 of the logic design is a double pilot two position directional control valve with a toggle positioning mechanism that holds the control spool in one open po sition until pressure is applied to the pilot cylinder on that side and then snaps the spool over into the oppo site open position. The inverting element 27 may be a two position pilot actuated directional control valve. The delay 28 is a small accumulator with one or more flow restriction valves to control its rate of pressure build-up and drainv An additional pilot actuated control valve can be included as a comparator to insure that the delayed signal is generated when the pressure in the accumulator reaches a definite fraction of a reference pressure existing elsewhere in the system.
Although one embodiment of the invention has been shown and described. it will be understood that various modifications may be made without departing from the spirit and scope of the invention.
What is claimed is:
l. in a cargo container handling system. a spreader bar assembly including:
a moveable support;
a rectangular frame with corner attachments connected to said support;
a hydraulic power source assembly embodying a hy draulic piston means adapted such that selected movement of said piston means readies said hydraulic power source assembly for operation;
hydraulic control means for locking and unlocking the corner attachments of the spreader frame. said hydraulic control means including safety interlock means disposed at each point of attachment and responsive to the relative position of said spreader frame with respect to a cargo container. said control means adapted to lock and unlock corner at tachments substantially simultaneously when a selected relative positioning of said spreader frame with respect to a cargo container occurs and the spreader frame concurrently fully rests on the cargo container; and
means connecting said hydraulic piston means of said hydraulic power source assembly to said move-able support such that a lift motion of said move-able support, with said spreader frame resting on the cargo container and undisturbed by said lift motion. pressurizes said hydraulic power source assembly.
2. The assembly of claim 1 wherein the moveable support includes a single hook by which the spreader frame is supported and said means connecting said hydraulic piston means of said hydraulic power source to said moveable support is a relatively short cable means which is attached to said single book on said moveable support.
3. The assembly of claim 2 wherein said safety interlock means are load responsive means and include time delay means such that said safety interlock means react to a selected load less than the full weight of said spreader frame when said safety interlock means is subjected to said selected load over a selected period of time.
4. The apparatus of cliam 3 further including means for visually determining when said interlock means are secure.
k t a

Claims (4)

1. In a cargo container handling system, a spreader bar assembly including: a moveable support; a rectangular frame with corner attachments connected to said support; a hydraulic power source assembly embodying a hydraulic piston means adapted such that selected movement of said piston means readies said hydraulic power source assembly for operation; hydraulic control means for locking and unlocking the corner attachments of the spreader frame, said hydraulic control means including safety interlock means disposed at each point of attachment and responsive to the relative position of said spreader frame with respect to a cargo container, said control means adapted to lock and unlock corner attachments substantially simultaneously when a selected relative positioning of said spreader frame with respect to a cargo container occurs and the spreader frame concurrently fully rests on the cargo container; and means connecting said hydraulic piston means of said hydraulic power source assembly to said moveable support such that a lift motion of said moveable support, with said spreader frame resting on the cargo container and undisturbed by said lift motion, pressurizes said hydraulic power source assembly.
2. The assembly of claim 1 wherein the moveable support includes a single hook by which the spreader frame is supported and said means connecting said hydraulic piston means of said hydraulic power source to said moveable support is a relatively short cable means which is attached to said single hook on said moveable support.
3. The assembly of claim 2 wherein said safety interlock means are load responsive means and include time delay means such that said safety interlock means react to a selected load less than the full weight of said spreader frame when said safety interlock means is subjected to said selected load over a selected period of time.
4. The apparatus of cliam 3 further including means for visually determining when said interlock means are secure.
US437566A 1974-01-29 1974-01-29 Automatic {13 {0 self contained {13 {0 light weight spreader bar Expired - Lifetime US3888536A (en)

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Cited By (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2407163A1 (en) * 1977-10-25 1979-05-25 Haulotte Ateliers Const Spreader for container crane - has reciprocating pump driven by pulley rotation to pressurise hydraulic fluid for actuating bolts engageable in container sockets
US4215892A (en) * 1978-10-02 1980-08-05 J. I. Case Company Latching mechanism for spreader
US4245271A (en) * 1979-05-18 1981-01-13 Gwin Steve W Crane system or cargo containers
US4488749A (en) * 1982-09-03 1984-12-18 Renner Manufacturing Company Spreader assembly
WO1985000578A1 (en) * 1983-07-21 1985-02-14 Celsiunator (S.A.) Pty. Ltd. Automatic container spreader
DE3400925A1 (en) * 1984-01-12 1985-07-25 BHS-Bayerische Berg-, Hütten- und Salzwerke AG, 8000 München Method and device for transporting a container by cargo-handling gear
DE3419363A1 (en) * 1984-05-24 1985-11-28 Kaup GmbH & Co KG Gesellschaft für Maschinenbau, 8750 Aschaffenburg CARRYING DEVICE FOR CONTAINERS
US4858978A (en) * 1987-02-10 1989-08-22 Deutsche Gesellschaft Fur Wiederaufarbeitung Von Kernbrennstoffen Mbh Coupling arrangement for changing components on the block of a hoist
US5163726A (en) * 1991-10-15 1992-11-17 Bromma, Inc. Spreader bar and overheight attachment with automatic latching mechanism
WO1999051487A1 (en) * 1998-04-02 1999-10-14 Yngve Flodin A remote-control device to release locks on stacks
WO2002100754A1 (en) * 2001-06-13 2002-12-19 Shanghai Zhenhua Port Machinery Co. Ltd. Lifting apparatus without electric cable
US20030214143A1 (en) * 2002-05-14 2003-11-20 Peter Walker System for securing a container
US20050033514A1 (en) * 2001-12-12 2005-02-10 Qing Lu Mobile station of global position system for rubber-tyred gantry crane
US20060240933A1 (en) * 2005-04-06 2006-10-26 Jianguo Shan Lifting machinery of four reel differential type for two 40 feet container shore crane
US20060243724A1 (en) * 2003-07-30 2006-11-02 Jianguo Shan Container lifter being able to lift two 40 feet containers
US20060247085A1 (en) * 2005-04-06 2006-11-02 Jianguo Shan Lifting machinery of two reel differential type for two 40 feet container shore crane
US20070090075A1 (en) * 2005-10-08 2007-04-26 Hong Tian Container crane with two carriers for lifting two 40 foot containers
US20070134076A1 (en) * 2005-12-14 2007-06-14 Hong Tian Carrier transferring load and unload system of low frame bridge type between the shore side crane and the stack field crane
US20070176490A1 (en) * 2006-01-27 2007-08-02 Gang He Energy-saving control system of rubber-tyred container gantry crane
US20070217894A1 (en) * 2006-03-15 2007-09-20 Hong Tian Container transportation carrier and container transportation system
US20070248444A1 (en) * 2006-04-20 2007-10-25 Shanghai Shenhua Port Machinery Co., Ltd. Arrangement scheme of a container wharf and the container loading/unloading process
US20080290676A1 (en) * 2007-05-23 2008-11-27 Marcel Eric P Spreader Frame for Cargo Container
US7461832B2 (en) 2005-04-06 2008-12-09 Shanghai Zhenhua Port Machinery Co., Ltd. Twin lifting machinery for two 40 feet container shore crane
US20090191028A1 (en) * 2008-01-24 2009-07-30 Hong Tian Loading/unloading system for container terminal
US20090252569A1 (en) * 2008-04-08 2009-10-08 Walker Peter J System for securing containers with multiple embodiments
US20110155614A1 (en) * 2008-07-10 2011-06-30 Peck & Hale, L.L.C. Universal container locking system
CN102730545A (en) * 2012-06-26 2012-10-17 三一集团有限公司 Container front side lifter and piling crane
CN103318748A (en) * 2012-11-02 2013-09-25 上海振华重工(集团)股份有限公司 Lifting device of water cargo platform
KR101678167B1 (en) * 2015-10-28 2016-11-22 조현일 Container locking apparatus of electric-type
RU193221U1 (en) * 2019-04-16 2019-10-17 Иванов Владимир Владимирович Traverse for moving a basket with a car semi-trailer
RU204941U1 (en) * 2020-11-26 2021-06-21 Борис Николаевич Вдовин Traverse for moving a basket with a car semi-trailer
CN113460870A (en) * 2021-05-25 2021-10-01 广东省第一建筑工程有限公司 Vertical rotation lifting system for steel member
RU209882U1 (en) * 2021-10-21 2022-03-23 Акционерное Общество "Федеральная Грузовая Компания" Adapter for gantry cranes and reachstackers
EE01591U1 (en) * 2020-11-27 2023-02-15 Boris Vdovin Traverse for moving the basket with a car semi-trailer
US11664255B2 (en) * 2019-04-18 2023-05-30 Schiller Automatisierungstechnik Gmbh Method and gripper for rotating a cleanroom container

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US2847245A (en) * 1954-11-16 1958-08-12 Libby Mcneill & Libby Box handling devices
US3428354A (en) * 1967-01-12 1969-02-18 Sun Shipbuilding & Dry Dock Co Cargo handling apparatus
US3501193A (en) * 1968-02-07 1970-03-17 States Steamship Co System for engaging cargo containers
US3712661A (en) * 1971-11-15 1973-01-23 L Strand Lifting yoke for transport containers
US3767250A (en) * 1970-04-21 1973-10-23 Rubery Owen & Co Ltd Load handling means

Patent Citations (5)

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Publication number Priority date Publication date Assignee Title
US2847245A (en) * 1954-11-16 1958-08-12 Libby Mcneill & Libby Box handling devices
US3428354A (en) * 1967-01-12 1969-02-18 Sun Shipbuilding & Dry Dock Co Cargo handling apparatus
US3501193A (en) * 1968-02-07 1970-03-17 States Steamship Co System for engaging cargo containers
US3767250A (en) * 1970-04-21 1973-10-23 Rubery Owen & Co Ltd Load handling means
US3712661A (en) * 1971-11-15 1973-01-23 L Strand Lifting yoke for transport containers

Cited By (51)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2407163A1 (en) * 1977-10-25 1979-05-25 Haulotte Ateliers Const Spreader for container crane - has reciprocating pump driven by pulley rotation to pressurise hydraulic fluid for actuating bolts engageable in container sockets
US4215892A (en) * 1978-10-02 1980-08-05 J. I. Case Company Latching mechanism for spreader
US4245271A (en) * 1979-05-18 1981-01-13 Gwin Steve W Crane system or cargo containers
US4488749A (en) * 1982-09-03 1984-12-18 Renner Manufacturing Company Spreader assembly
WO1985000578A1 (en) * 1983-07-21 1985-02-14 Celsiunator (S.A.) Pty. Ltd. Automatic container spreader
US4648645A (en) * 1983-07-21 1987-03-10 Lundgren Sven Olof Automatic container spreader
AU575065B2 (en) * 1983-07-21 1988-07-21 Celtainer Ltd. Automatic container spreader
DE3400925A1 (en) * 1984-01-12 1985-07-25 BHS-Bayerische Berg-, Hütten- und Salzwerke AG, 8000 München Method and device for transporting a container by cargo-handling gear
DE3419363A1 (en) * 1984-05-24 1985-11-28 Kaup GmbH & Co KG Gesellschaft für Maschinenbau, 8750 Aschaffenburg CARRYING DEVICE FOR CONTAINERS
US4858978A (en) * 1987-02-10 1989-08-22 Deutsche Gesellschaft Fur Wiederaufarbeitung Von Kernbrennstoffen Mbh Coupling arrangement for changing components on the block of a hoist
US5163726A (en) * 1991-10-15 1992-11-17 Bromma, Inc. Spreader bar and overheight attachment with automatic latching mechanism
WO1999051487A1 (en) * 1998-04-02 1999-10-14 Yngve Flodin A remote-control device to release locks on stacks
US20040189031A1 (en) * 2001-06-13 2004-09-30 Changbiao Zhu Lifting apparatus without electric cable
US7213852B2 (en) 2001-06-13 2007-05-08 Shanghai Zhanhua Port Machinery Co., Ltd. Lifting apparatus without electric cable
WO2002100754A1 (en) * 2001-06-13 2002-12-19 Shanghai Zhenhua Port Machinery Co. Ltd. Lifting apparatus without electric cable
US20050033514A1 (en) * 2001-12-12 2005-02-10 Qing Lu Mobile station of global position system for rubber-tyred gantry crane
US7014234B2 (en) * 2002-05-14 2006-03-21 Peter Walker Walker Integrated corner casting locking mechanism for shipping containers
US20030214143A1 (en) * 2002-05-14 2003-11-20 Peter Walker System for securing a container
US7918354B2 (en) 2003-07-30 2011-04-05 Shanghai Zhenhua Port Machinery Co., Ltd. Container lifter being able to lift two 40 feet containers
US20060243724A1 (en) * 2003-07-30 2006-11-02 Jianguo Shan Container lifter being able to lift two 40 feet containers
US20060247085A1 (en) * 2005-04-06 2006-11-02 Jianguo Shan Lifting machinery of two reel differential type for two 40 feet container shore crane
US20060240933A1 (en) * 2005-04-06 2006-10-26 Jianguo Shan Lifting machinery of four reel differential type for two 40 feet container shore crane
US7461832B2 (en) 2005-04-06 2008-12-09 Shanghai Zhenhua Port Machinery Co., Ltd. Twin lifting machinery for two 40 feet container shore crane
US7556161B2 (en) 2005-04-06 2009-07-07 Shanghai Zhenhua Port Machinery Co., Ltd. Lifting machinery of two reel differential type for two 40 feet container shore crane
US7494020B2 (en) 2005-04-06 2009-02-24 Shanghai Zhenhua Port Machinery Co., Ltd. Lifting machinery of four reel differential type for two 40 feet container shore crane
US20070090075A1 (en) * 2005-10-08 2007-04-26 Hong Tian Container crane with two carriers for lifting two 40 foot containers
US20070134076A1 (en) * 2005-12-14 2007-06-14 Hong Tian Carrier transferring load and unload system of low frame bridge type between the shore side crane and the stack field crane
US20070176490A1 (en) * 2006-01-27 2007-08-02 Gang He Energy-saving control system of rubber-tyred container gantry crane
US20070217894A1 (en) * 2006-03-15 2007-09-20 Hong Tian Container transportation carrier and container transportation system
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