Adaptable slide bearing for telescopic crane jibs
View Patent ↗A telescopic crane jib-slide bearing part comprises a receiver and a filler compound introduced into the receiver. A telescopic crane jib-slide bearing includes one or more such slide bearing parts.
1. A telescopic crane slide bearing part for facilitating telescopic movement of relatively moveable jib sections, comprising
a receiver interposed in a space between adjacent relatively telescopic jib sections, said receiver contacting mutually facing first and second slide surfaces, respectively, of first and second relatively telescopic jib sections; and
a filler compound introduced into the receiver positioned between said jib sections;
said filler compound comprising a material that is introduced into the receiver in a non-solid form, which conforms to a shape defined by the first and second slide surfaces of the relatively telescopic jib parts and solidifies whereby said slide bearing part assumes a shape and fills a space defined by said first and second sliding surfaces.
2. A telescopic crane slide bearing part as claimed in claim 1 , further comprising a Teflon core in the receiver.
3. A telescopic crane slide bearing part as claimed claim 1 , wherein the receiver comprises a material that is capable of conforming to a shape defined by the mutually facing first and second slide surfaces when said receiver is interposed between adjacent jib sections.
4. A telescopic crane slide bearing part as claimed in claim 1 , wherein the receiver comprises a friction-resistant and abrasion-resistant material comprising polyamide or glass fiber-reinforced polyethylene.
5. A telescopic crane slide bearing part as claimed in claim 1 , wherein the filler compound comprises one or more of the following materials:
a thermosetting plastic;
a casting resin or a moulding compound;
a casting resin or a moulding compound with fiber reinforcement;
a plastic foam;
a liquid which is capable of crystallisation,
sodium acetate; and
an elastomer.
6. A telescopic crane slide bearing part as claimed in claim 1 , wherein the receiver comprises a hollow body, portions of said hollow body contacting the mutually facing first and second slide surfaces, respectively, of the first and second relatively moveable jib sections.
7. A telescopic crane slide bearing part as claimed in claim 6 , wherein the receiver comprises a shell, exterior portions of said shell contacting the mutually facing first and second slide surfaces, respectively, of the first and second relatively moveable jib sections.
8. A telescopic crane slide bearing part as claimed in claim 6 , wherein said hollow body is a tubular body, exterior portions of said tubular body contacting the mutually facing first and second slide surfaces, respectively, of the first and second relatively moveable jib sections.
9. A telescopic crane slide bearing part as claimed in claim 1 , wherein the receiver comprises a shell, exterior portions of said shell contacting the mutually facing first and second slide surfaces, respectively, of the first and second relatively moveable jib sections.
10. A telescopic crane slide bearing comprising a plurality of slide bearing parts as claimed in claim 1 disposed in mutual abutment to each other.
11. A telescopic crane slide bearing as claimed in claim 10 , wherein the receivers of the respective slide bearing parts are of the same length.
12. A telescopic crane slide bearing as claimed in claim 10 , wherein the receivers of the respective slide bearing parts are of different lengths.
13. A telescopic crane slide bearing as claimed in claim 10 , in combination with a telescopic crane jib having at least two adjacent relatively telescopic jib parts including at least an outer telescopic jib part comprising a collar and an inner telescopic jib part comprising a base, wherein said slide bearing is disposed between the two adjacent telescopic parts of the crane jib in a jib portion comprising at least one of the collar of the outer telescopic part and the base of the inner telescopic part.
14. A telescopic crane slide bearing in combination with a telescopic crane jib as claimed in claim 13 , further comprising an abutment in said jib portion, wherein said abutment is engaged by the receiver filled with the filler compound whereby said slide bearing is secured axially or in a peripheral direction with respect to said jib section.
15. A telescopic crane slide bearing as claimed in claim 14 , wherein said abutment comprises a bead, an aperture or a web engaging said receiver or said filler compound.