A lifting tool 100 form part of a lifting apparatus associated with an aircraft handler 10 for applying a lifting load to an undercarriage of an aircraft. The lifting apparatus comprise a pair of opposed lifting tools 100 which engage end portions of an undercarriage wheel axle 300 for lifting. Each
A lifting tool 100 form part of a lifting apparatus associated with an aircraft handler 10 for applying a lifting load to an undercarriage of an aircraft. The lifting apparatus comprise a pair of opposed lifting tools 100 which engage end portions of an undercarriage wheel axle 300 for lifting. Each lifting tool 100 has a body 101 with a cavity 103 therein filled with a plurality of axially displaceable closely packed pins 105 which permit insertion of a portion of the axle or adaptor means into the cavity, and other pins, in use, surrounding said portion provide support and transfer the lift load to the surrounding body 101.
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1. An aircraft handler for applying a lift load to an undercarriage of an aircraft, the handler comprising: a moveable ground standing body;first and second opposed lifting arms having proximal and distal ends, each arm pivotably mounted to the body to rotate about a substantially horizontal pivot a
1. An aircraft handler for applying a lift load to an undercarriage of an aircraft, the handler comprising: a moveable ground standing body;first and second opposed lifting arms having proximal and distal ends, each arm pivotably mounted to the body to rotate about a substantially horizontal pivot axis to thereby lower or raise the distal ends of the arms with respect to the Earth, the proximal end of the first lifting arm pivotably connected to the body to pivot about a first pivot axis, the proximal end of the second lifting arm pivotably connected to the body to pivot about a second pivot axis, the first and second pivot axes oriented at a right angle with respect to the horizontal pivot axis, the first and second opposed lifting arms pivotable about their respective first and second pivot axis to thereby cause the distal ends of the arms to move closer or further from each other to thereby contact or move away from the undercarriage of the aircraft, the first and second opposed lifting arms rotatable about the horizontal pivot axis to thereby lift or lower the undercarriage of the aircraft when the undercarriage is contact by the distal ends of the first and second opposed lifting arms being pivoted towards each other; anda lifting tool mounted at a distal end of each of the first and second lifting arms, each of said lifting tools being connectable to the undercarriage,wherein each of the said lifting tools include:a body with a cavity; anda plurality of closely packed pins moveably retained within said cavity, the pins biased outwardly of said body and individually axially displaceable within the cavity, said pins pressable against portions of the undercarriage by rotation of the lifting arms about the first and second axes, the pins moveable axially to assume a complementary shape to receive said portions, and to thereby transmit a lifting load to raise said portions as the first and second arms are pivoted about said horizontal axis. 2. The handler of claim 1, further including a pair of adaptors each connected to one of the distal ends of a lifting arm, each adaptor configured to engage an opposite side of the undercarriage, each of the adaptors having a spigot thereon which is engageable with a respective lifting tool, whereby when said pins are pressed against said opposed spigots, the pins assume a complementary shape to receive said spigots and a lifting load applied to said lifting tools is transferred by some of said pins to said adaptor and to the undercarriage. 3. The handler of claim 2, wherein the adaptor is a disc including a stud on one side of the disc and the spigot is positioned on an opposed side of the disc, the stud securable to a tow point of the undercarriage. 4. The handler of claim 1, wherein the pins have outer end faces which together form a substantially continuous planar surface when all the pins are at their maximal axial outer displacement. 5. The handler of claim 1, wherein the pins have a circular cross-section. 6. The handler of claim 1, wherein any one pin when at maximum inward displacement is supported at least in part by adjacent pins. 7. The handler of claim 1, wherein the cavity is provided with a base attached to the body and the inner ends of the pins are slidably mounted to the base. 8. The handler of claim 7, wherein the base of the cavity is detachable from the body allowing the pins and base to be removed and attached as a single sub-assembly. 9. The handler of claim 1, wherein the cavity is hexagonal in section, having six sides, with the pins being cylindrical. 10. The handler of claim 9, wherein in use, two of said six sides of said hexagonal section cavity are substantially horizontal. 11. The handler of claim 10, wherein at least the other four sides of said sides of the hexagonal section cavity are provided with arcuate concave recesses, each of which accommodate an adjacent pin. 12. The handler of claim 1, which is self-propelled and wherein the ground standing body is generally “U” shaped to form two body arms, each body arm having a wheel located on a free end, the first and second lifting arms located between the wheels at the arm ends. 13. The handler of claim 1, further including at least one actuator connected between the lifting arms, thereby configured to move the arms towards or away from each other. 14. An aircraft handler for applying a lift load to an undercarriage of an aircraft, the handler comprising: a moveable ground standing body;first and second opposed lifting arms having proximal and distal ends, each arm pivotably mounted to the body to rotate about a substantially horizontal pivot axis to thereby lower or raise the distal ends of the arms with respect to the Earth, the proximal end of the first lifting arm pivotably connected to the body to pivot about a first pivot axis, the proximal end of the second lifting arm pivotably connected to the body to pivot about a second pivot axis, the first and second pivot axes oriented at a right angle with respect to the horizontal pivot axis, the first and second opposed lifting arms pivotable about their respective first and second pivot axis to thereby cause the distal ends of the arms to move closer or further from each other to thereby contact or move away from the undercarriage of the aircraft, the first and second opposed lifting arms rotatable about the horizontal pivot axis to thereby lift or lower the undercarriage of the aircraft when the undercarriage is contact by the distal ends of the first and second opposed lifting arms being pivoted towards each other; anda lifting tool mounted at a distal end of each of the first and second lifting arms, each of said lifting tools being connectable to the undercarriage,wherein the lifting arms are mounted on a pair of coaxial stub axles rotatable about the horizontal axis, said stub axles having outer end portions provided with radial lugs and actuators configured to act between each respective arm of the body and lug to rotate the stub axles to raise or lower the lifting arms. 15. An aircraft handler for applying a lift load to an undercarriage of an aircraft, the handler comprising: a moveable ground standing body;first and second opposed lifting arms having proximal and distal ends, each arm pivotably mounted to the body to rotate about a substantially horizontal pivot axis to thereby lower or raise the distal ends of the arms with respect to the Earth, the proximal end of the first lifting arm pivotably connected to the body to pivot about a first pivot axis, the proximal end of the second lifting arm pivotably connected to the body to pivot about a second pivot axis, the first and second pivot axes oriented at a right angle with respect to the horizontal pivot axis, the first and second opposed lifting arms pivotable about their respective first and second pivot axis to thereby cause the distal ends of the arms to move closer or further from each other to thereby contact or move away from the undercarriage of the aircraft, the first and second opposed lifting arms rotatable about the horizontal pivot axis to thereby lift or lower the undercarriage of the aircraft when the undercarriage is contact by the distal ends of the first and second opposed lifting arms being pivoted towards each other; anda lifting tool mounted at a distal end of each of the first and second lifting arms, each of said lifting tools being connectable to the undercarriage,wherein the lifting arms each comprise a pair of substantially parallel struts each of which is pivoted at the proximal end to a stub axle pivotable about the horizontal axis, and the distal end to one of said pair of lifting tools, thereby forming a four bar parallelogram linkage configured to maintain the pair of lifting tools in mutually aligned relationship as the lifting arms are pivoted about their respective first and second axis. 16. An aircraft handler for applying a lift load to an undercarriage of an aircraft, the handler comprising: a moveable ground standing body;first and second opposed lifting arms having proximal and distal ends, each arm pivotably mounted to the body to rotate about a substantially horizontal pivot axis to thereby lower or raise the distal ends of the arms with respect to the Earth, the proximal end of the first lifting arm pivotably connected to the body to pivot about a first pivot axis, the proximal end of the second lifting arm pivotably connected to the body to pivot about a second pivot axis, the first and second pivot axes oriented at a right angle with respect to the horizontal pivot axis, the first and second opposed lifting arms pivotable about their respective first and second pivot axis to thereby cause the distal ends of the arms to move closer or further from each other to thereby contact or move away from the undercarriage of the aircraft, the first and second opposed lifting arms rotatable about the horizontal pivot axis to thereby lift or lower the undercarriage of the aircraft when the undercarriage is contact by the distal ends of the first and second opposed lifting arms being pivoted towards each other; anda lifting tool mounted at a distal end of each of the first and second lifting arms, each of said lifting tools being connectable to the undercarriage,further including an adaptor having a disc, a first spigot to one side of the disc and coaxial therewith, engageable within the cavity of a lifting tool, and a second spigot on the other side of the disc, also coaxial with the disc and configured for engaging a cavity within a tow point on the undercarriage. 17. A method of application of a lifting load to an object in which a lifting apparatus according to claim 1 is maneuvered to a location adjacent said object and the lifting tools are caused to engage opposed portions of the object to be lifted when on the ground, and then applying a lifting load to said object. 18. The method of claim 17, wherein an adaptor is attached to each side of a tow point on an aircraft undercarriage, and the two lifting tools are each configured to engage a respective adaptor, so attached, for application of a lifting load to the undercarriage. 19. An aircraft handler for applying a lifting load to an undercarriage of an aircraft, and which includes a lifting apparatus comprising a pair of lifting tools for engaging opposed portions of an undercarriage for lifting, each lifting tool having a body with a cavity therein filled with a plurality of closely packed pins which provide load bearing surfaces which in use engage a portion of said object, the pins being individually axially displaceable within the cavity to permit limited movement of at least some of said pins on insertion of a respective portion of the undercarriage into the cavity with other pins surrounding said portion providing support and transferring the lift load to the surrounding body.
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이 특허에 인용된 특허 (20)
Cipolla Thomas M. (Ballston Lake NY), Adaptive gripping device.
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