IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0976622
(2004-10-29)
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등록번호 |
US-7311487
(2007-12-25)
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발명자
/ 주소 |
- Crossley,Eric
- Crossley,Steve
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출원인 / 주소 |
- Crossley,Eric
- Crossley,Steve
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
15 인용 특허 :
14 |
초록
▼
A warehouse palette rack repositioning assembly which can move a palette rack in its fully loaded state from one area of the warehouse to the other area of the warehouse. The warehouse pallet rack repositioning assembly can be installed onto a pallet rack by one workman. The assembly has a lifting
A warehouse palette rack repositioning assembly which can move a palette rack in its fully loaded state from one area of the warehouse to the other area of the warehouse. The warehouse pallet rack repositioning assembly can be installed onto a pallet rack by one workman. The assembly has a lifting unit and four wheeled skate units which provide the transportation means. The lifting unit is attached to the palette rack upright legs in the transverse direction, and a jack is used to actuate the lifting unit and lift the palette rack. The wheeled skate units are then installed underneath the palette rack uprights, with the pallet rack then being loaded onto the wheeled skate units for transportation.
대표청구항
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We claim: 1. An assembly to move a load carrying structure over a base surface from a first location to a second location, the load carrying structure having a longitudinal axis, a transverse axis, and vertical axis, a first and second structure end portions, said end portions spaced along the long
We claim: 1. An assembly to move a load carrying structure over a base surface from a first location to a second location, the load carrying structure having a longitudinal axis, a transverse axis, and vertical axis, a first and second structure end portions, said end portions spaced along the longitudinal axis, a load carrying platform section with one or more load carrying platforms, the load carrying platform section having a front end portion, a rear end portion, arranged around the longitudinal, transverse, and vertical axis, each structure end portion having first and second support members, said first and second support members of each structure end portion being at the corresponding first and second transversely spaced base support locations, said platform section having a first load carrying region bounded by lateral, front, and rear delimiting lines which coincide generally with vertically upward projections of two longitudinally extending lines from the first base support locations to the second base support locations, said platform section carrying a load or loads positioned so that the load carrying structure and the load or loads collectively have a center of gravity which is within said load carrying region, said first and second support members engaging said base surface at the base support locations to support the loads held within the load carrying region, in its base engaging position the assembly comprising: a. at least four wheeled transport units, a first two wheeled transport units of which are arranged to be positioned at two transversely spaced transport positions corresponding to said first structure end portion, and a second two wheeled transport units of which are arranged to be positioned at two transversely spaced transport positions corresponding to said second structure end portion; b. said wheeled transport units being arranged so that with the four wheeled transport units located in their transport positions and bearing against the base surface, the load carrying structure is in a transport position with the first and second support members of each of the first and second structure end portions being out of contact with the base surface; c. a lifting component comprising at least a first and second lift unit, said lifting component being arranged in a manner that with the support structure being positioned with both of the first support members and both of the second support members engaging the base surface, said first lift unit or said second lift unit is able to be positioned at either the first and second structure end portions to raise that structure end portion to a first higher level where the related two wheeled transport units can be located in the transport locations or removed from the transport positions, and the lift unit can be lowered so that the lift unit can be removed from either of the first and second structure end portions with the structure being in either its transport position or its base engaging position. 2. The assembly according to claim 1 wherein each wheeled transport unit is further comprised of at least two castor wheels, a wheel load distribution section, a load well, and a top connecting plate, the at least two castor wheels engaging said base surface and connected to the top connecting plate, the top connecting plate connected to the wheel load distribution section, the wheel load distribution section connected to the load well, whereby the load well is adapted to carry one of said end portion support members in said transport position and further adapted to transfer the load from said support member into said load distribution section, the load distribution section further adapted to distribute said load equally between the at least two castor wheels, the at least two castor wheels adapted to transfer the load into said base surface. 3. The assembly according to claim 2 wherein the wheeled transport unit is further comprised of: a. the load well having a load well bottom plate, a plurality of load well side plates, each load well side plate having: b. a structural thickness of at least one quarter of an inch, a rectangular shape with the plate orientated vertically, the plate having a top and bottom edge with substantially parallel side edges, the top edge connected to said top connecting plate, one of the parallel side edges connected to the load distribution section, the bottom edge connected to the bottom plate, c. the load well bottom plate having a structural thickness of at least one quarter of an inch, a shape of a rectangle or square with the shape orientated horizontally, the bottom plate having four edges, with two opposite edges fixed to the bottom edges of the load well side plates, and a third edge fixed to the wheel load distribution section, d. whereby the load well bottom plate can share the load from the load carrying support structure member with the load well side plate and the load distribution section. 4. The assembly according to claim 2 wherein the load well is configured to the shape of a rectangular box having a top portion, a bottom portion, and four side portions, the top portion being removed, and one of the side portions being removed, whereby the load caring structure support member can be inserted into the load well through the removed top and side portions. 5. The assembly according to claim 2 wherein the wheeled transport unit is further comprised of an end portion support member lateral fixation assembly, the lateral fixation assembly being comprised of a plurality of through bolts, a plurality of nuts and washers, a fixation region, the fixation region arranged along a lateral axis, the axis extending through the end portion support member and the upper portion of the load distribution section, both the end portion support member and the load distribution section having borings which are at least the diameter of the through bolts, the borings centered along the lateral axis of the fixation region, whereby the through bolts can pass through the fixation region and the washer and nuts can be applied to fixate the load carrying support member to the load distribution section. 6. The assembly according to claim 2 wherein the wheel transport unit having the load well bottom plate is at least 1 inch above the ground. 7. The assembly according to claim 1 wherein the wheel support unit is further comprised of a frame element arranged substantially around a longitudinal axis, a transverse axis, and the vertical axis, the frame element having a support seat substantially comprised to accept the end portion support member, the support seat arranged in a low vertical location, the frame adapted to accept at least two wheel elements, the frame further comprised of load transfer top plates, the load transfer top plates running in the substantially longitudinal direction, the frame additionally comprised of a plurality of vertical section members, the vertical section members providing the required stiffness to resist bending of the frame due to the load carrying structure portion support member, whereas the wheel elements provide support for the frame and transfer load through the wheel elements into the base surface. 8. The assembly according to claim 2 wherein the castor wheels have a plurality of forks arranged along a substantially vertical axis, a top portion of the forks connected to a stay, the stay being connected to a bottom portion of the top connecting plate, the stay having swiveling properties which enable the castor wheel to rotate 360째 in the transverse and longitudinal axis, the castor wheels enabling the wheeled transport units to transfer the load carrying structure in any longitudinal or transverse direction. 9. The assembly according to claim 2 wherein the castor wheels can be positioned along the transverse axis, and provide a parked position for the wheeled transport unit, the parked position comprised of a plurality of base engagement points, the base engagement points substantially located at a tangential meeting location between the castor wheel and the base surface and the outer edge of the load well and the base surface, whereby the parked position resists tipping of the wheeled transport unit in the parked position. 10. The assembly according to claim 1 wherein the wheeled transport unit is further adapted to: a. be positioned corresponding to the end portion support members by a single individual, b. weigh not more than 75 lbs., c. carry the first and second end portion support members and maintain a low separation distance between the first and second end portion support members and the surface of not less than 쩌 inch. 11. The assembly according to claim 1 wherein each lifting unit is further comprised of: a. a lifting frame element substantially arranged along the transverse and vertical axis of the structure end portion, the lifting frame element having a load carrying section, a plurality of connection sections, a load equalization section, a lifting positioning member, and a Jack element, b. the load carrying section arranged along the transverse axis, the load carrying section having substantial strength characteristics to provide lifting of the structure end portion, c. the plurality of connection sections each comprised of a sleeve and connection plate, the sleeve permanently fixed to the connection plate, the sleeve adapted to accept the load carrying section, the connection plate adapted to fix to the load carrying structure end portion, d. the load equalization section adapted to traverse along the load carrying section and be positioned at a selected lift location relative to either the first or back structure end portions, the selected lift location chosen so that the center of gravity is within a second load carrying region which is defined as an area bounded by two delimiting lines extending from said lift location to the corresponding longitudinally opposite first and second base support locations of either the first or second structure end portions, and a line extending between the first and second base support locations of either the first or second structure end portions, whereby during the lifting of the selected structure end portion the load carrying structure will not tip over, e. The lifting positioning member connected to the load equalization section, the lifting positioning member having a containment region wherein the containment region has a top portion and surrounding wall portions with an open bottom portion to accept the Jack element, whereby, the containment region contains the Jack element to avoid slipping of the Jack element out from underneath the load equalization section during the lifting of the structure end portion. 12. The assembly according to claim 1 wherein each lifting unit is further comprised of: a. a lifting frame element substantially arranged along the transverse and vertical axis of the first or second structure end portions, the lifting frame element having a load carrying section, a plurality of connection sections, at least two load equalization sections, at least two lifting positioning members, and at least two jack elements, b. the load carrying section arranged along the transverse axis, the load carrying section having substantial strength characteristics to provide lifting of the structure end portion, c. the plurality of connection sections each comprised of a sleeve and connection plate, the sleeve permanently affixed to the connection plate, the sleeve adapted to accept the load carrying section, the connection plate adapted to affix to the load carrying structure end portion, whereby the load carrying section can move transversely within said sleeves to adjust for varying structure end portion transverse lengths, d. the load equalization sections adapted to traverse along the load carrying section and be positioned at selected variable lift locations, including a first selected lift location and a second selected lift location, relative to either the first or second structure end portions, the selected lift locations chosen so that the center of gravity is within a third load carrying region which is defined as generally a trapezoidal area bounded by four delimiting lines, the first delimiting line extending from the first selected lift location to the longitudinally opposite first base support location, the second delimiting line extending from the second lift location to the second longitudinally opposite base support location, the third delimiting line extending between the first and second base support locations of the structure end portion not being lifted, the fourth delimiting line extending between the first and second selected lift locations, whereby during the lifting of the selected structure end portion the load carrying structure will not tip over, e. the two lifting positioning members each being connected to one of the two load equalization sections, the lifting positioning member having a containment region where in the containment region has a top portion, a surrounding wall portion, and an open bottom portion, the opened bottom portion adapted to accept the jack element, whereby the containment region contains the jack element to avoid slipping of the jack element as the structure end portion is being lifted. 13. The assembly according to claim 11 wherein the load carrying section is further comprised of: a. a transverse length at least long enough to span between the structure end portion first and second support members, b. a longitudinal cross-sectional moment of inertia at least great enough to withstand lifting of the structure end portion at the transverse length midpoint. 14. The assembly according to claim 11 wherein the load carrying section is further comprised of: a. a tube steel member having a transverse length at least long enough to span between the structure end portion first and second support members, a longitudinal cross-sectional rectangular shape with the vertical walls at least 3 inches long and the top and bottom walls at least 2 inches wide, the wall width at least ⅜ of an inch thick, b. a steel strong back bar inserted into the hollow region of the load carrying section, the steel strong back bar having a transverse length at least as long as the tube steel member, and having a longitudinal width of at least one quarter inch with a vertical height of at least 2쩍 inches, the steel strong back bar fixed along the longitudinal midpoint of the steel tube member, and being connected along the transversal length to the tube steel member. 15. The assembly according to claim 11 wherein the connection section is further comprised of: a. a rectangular sleeve and a rectangular connection plate, the rectangular sleeve comprised of a tube steel member having a transverse length at least as long as 3 inches, a vertical height at least as tall as 3쩍 inches, a longitudinal width at least as long as 2쩍 inches, the wall width at least 3/16 of an inch thick, b. the rectangular connection plate having a vertical length of at least 1 foot, a transverse width of at least 3 inches, and a longitudinal thickness of at least ⅜ of an inch, the rectangular connection plate further having a rectangular sleeve connection position centered transversely and vertically on the connection plate, the connection plate further having a plurality of connection holes, the connection holes positioned outside of the rectangular sleeve connection position and each having a diameter of at least one quarter of an inch, the connection holes positioned such that a connection through bolt can be inserted into the connection hole and through the corresponding structure end portion support member, c. the rectangular sleeve connected to the rectangular connection plate at the rectangular sleeve connection position. 16. The assembly according to claim 11 wherein the load equalization section is further comprised of: a. a tube steel member comprised of four wall members, including top and bottom horizontal wall members, two vertical side wall members, the vertical side wall members having a height at least as tall as 3쩍 inches, the horizontal top and bottom wall members having widths at least as wide as 2쩍 inches, the tube steel member having a transverse length at least as long as 3 inches, the top wall member having a threaded opening centered within the horizontal plane of the top wall section, a threaded set screw configured to join with the threaded opening, the bottom wall member having a containment region connected at the bottom face in the center of the horizontal wall member plane, the containment region comprised of at least a 2 inch inner diameter cup, whereby, after positioning of the load equalization section along the load carrying section, the threaded set screw can be tightened through the threaded opening and against the load carrying section providing securitization of the load equalization section during use, additionally, whereby the containment region contains the jack element to avoid slipping of the jack element during the lifting of the load carrying structure end portion. 17. The wheel support unit according to claim 7 wherein the wheel support unit is further comprised of a longitudinal width of not more than 6 inches.
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