Fluid injection systems, apparatus, and methods including flexible hoses for wellhead sites

A fluid injection system for wellhead sites, comprising:

• a platform;
• a pump manifold coupled to the platform;
• a pair of rails coupled to the platform;
• a trolley disposed between the pair of rails and above the pump manifold, wherein the trolley is movable along the pair of rails;
• and
• a flexible hose lifting device coupled to the trolley and comprising:
• a connection device configured to grab, lift, and/or move a flexible hose relative to the pump manifold;
• a base coupled to the trolley;
• and
• at least one pivot joint and at least one arm coupled to the base, wherein the connection device is coupled to an end of the at least one arm.

A fluid injection system for wellhead sites, comprising:

• a platform;
• a pump manifold coupled to the platform;
• a pair of rails coupled to the platform;
• a trolley disposed between the pair of rails and above the pump manifold, wherein the trolley is movable along the pair of rails;
• and
• a flexible hose lifting device coupled to the trolley and comprising:
• a connection device configured to grab, lift, and/or move a flexible hose relative to the pump manifold, wherein the trolley is movable horizontally along the pair of rails to move the flexible hose lifting device past a plurality of trailers of a plurality of pumps located adjacent to the pump manifold.

A fluid injection system for wellhead sites, comprising:

• a platform;
• a pump manifold coupled to the platform;
• a pair of rails coupled to the platform;
• a trolley disposed between the pair of rails and above the pump manifold, wherein the trolley is movable along the pair of rails;
• and
• a flexible hose lifting device coupled to the trolley and comprising:
• a connection device configured to grab, lift, and/or move a flexible hose relative to the pump manifold, wherein the connection device is configured to connect the flexible hose to an angled joint of the pump manifold.