Improvements comprise a wheel 30 for a rail trolley; the wheel comprises an outer wheel body portion (42, fig 5a,b), an inner wheel body portion (54, fig 5b) which is receivable inside the outer wheel body portion, wherein the inner body portion includes a radial support wall (54) that engages with a tread wall of the outer wheel body. Additionally, a fail-safe brake system (76, fig 9) comprising a brake drum (78), a brake shoe (80) receivable in the brake drum, a brake engagement member (82) moves the brake shoe, a cantilevered indicator arm (84) and a biasing element (86) for biasing the brake show towards the brake drum and a biased position of the cantilevered arm indicated brake shoe wear. Additionally, a rail trolley comprises left hand wheel assembly 14a having first and second wheels and a left-hand brake assembly, an identical right-hand assembly 14b, a cross member 16 extending between the two assemblies, and a brake control member. Additionally, a rail trolley comprising left and right-hand wheel assemblies, a cross member, and a trolley support stand assembly (66, fig 25) that engages by connector to the cross member to allow the trolley to be supported on the ground.
Improvements in or relating to rail trolleys
2020-12-23
Patent
Electronic Resource
English