floor-operated gantry crane
or
floor-operated overhead crane

<< "Gantry crane" means a crane similar to an overhead crane except that the bridge for carrying the trolley or trolleys is rigidly supported on two or more legs running on fixed rails or other runway. >>
<< "Overhead crane" means a crane with a movable bridge carrying a movable or fixed hoisting mechanism and traveling on an overhead fixed runway structure. >>

http://www.osha.gov/pls/oshaweb/owadisp.show_document?p_tabl...

<< The crane operator either sits in a cabin at the top of the tower or controls the crane by radio remote control from the ground, usually standing near the load.>>
http://en.wikipedia.org/wiki/Crane_(machine)

<< For regular heavy work the 'gantry' or 'bridge' cranes have been used since the 1850s. >>
http://myweb.tiscali.co.uk/gansg/9-loads/11-crane.htm


gantry crane
- a crane in bridge form with vertical members running on parallel tracks.
The Chambers Dictionary. 1994

--
<< Gantry Crane
A crane or hoisting machine mounted on a frame or structure spanning an intervening space, which often travels on rails. >>
http://www.eyefortransport.com/glossary/gh.shtml

<< "Floor-operated crane" means a crane which is pendant or nonconductive rope controlled by an operator on the floor or an independent platform. >>
http://www.lni.wa.gov/wisha/rules/generalsafety/HTML/24_d2.h...
+
http://www.google.com/search?hl=en&safe=off&c2coff=1&q=floor...