Connection device and system for suspending a monorail beam from a roof bolt

A connection device for suspending a monorail beam in a mine roof, the connection device comprising:

• a top anchor integrated with a roof bolt or attachable to a roof bolt;
• and
• a clamping device for connection to the monorail beam, the clamping device including a housing attachable to the monorail beam, wherein the housing includes a central recess provided with an opening configured such that the top anchor is movable into and out of the central recess along a first axis through the opening, wherein the clamping device includes at least one locking member radially movable into and out of the central recess with respect to the first axis between an inner locking position in which the at least one locking member prevents the top anchor from moving out of the central recess, and an outer open position in which the top anchor is free to move past the at least one locking member, and wherein each at least one locking member is provided in a respective radial guide recess of the housing.