Safety gate

A safety gate comprising:

• a first frame assembly having:
• a first frame;
• a first shaft rack mounted on a first side edge of the first frame in a transverse direction relative to the one side edge's longitudinal axis;
• and
• a first shaft securely mounted on the first shaft rack;
• a second frame assembly adjacent to a second side edge of the first frame in the same transverse direction and having:
• a second frame mounted between the first frame and the first shaft;
• a second shaft rack mounted on a side edge of the second frame adjacent to the first shaft rack in the same transverse direction, and having a rack abutting surface formed on the second shaft rack and facing the first shaft rack;
• and
• a second shaft securely mounted on the second shaft rack and being transversely slidable when combined with the first shaft;
• a shaft fixing assembly mounted around the first shaft and having:
• a clamping sleeve mounted around the first shaft and having:
• two open sides;
• an open top;
• a chamber defined in the clamping sleeve and communicating with the open sides and the open top, wherein the chamber's cross section cut through a longitudinal plane perpendicular to the transverse direction corresponds to a cross section of the first shaft cut through the same longitudinal plane;
• two pressing walls each respectively formed on and protruding upwardly from two top portions of the clamping sleeve;
• two pressing protrusions each respectively formed on and protruding outwardly from peripheries of the two pressing walls;
• two positioning grooves each respectively formed in the peripheries of the two pressing walls;
• two first pivot holes, each pressing wall having one of said two first pivot holes at a first end of each respective pressing wall proximal to the first shaft rack and aligning with the other first pivot hole on the other pressing wall;
• and
• two second pivot holes, each pressing wall having one of said two second pivot holes at a second end of each respective pressing wall distal from the first shaft rack and aligning with the other second pivot hole;
• a compression arm mounted above the clamping sleeve and having:
• an open side;
• an open bottom;
• two inner walls being opposite to each other;
• a chamber defined in the compression arm and communicating with the open side and the open bottom;
• said two inner walls sandwiching the compression arm's chamber and respectively directly contacting the peripheries of the pressing walls when the compression arm is pivoted downwardly to rest on the pressing walls;
• and
• two positioning ribs respectively formed on and protruding from the two inner walls of the compression arm and respectively aligning with the positioning grooves when said arm is pivoted downwardly to rest on the pressing walls;
• wherein the open side of the compression arm is pivotally connected to the first pivot holes of the pressing walls;
• and
• a stretcher assembly mounted around the first shaft, the clamping sleeve and the compression arm, said stretcher assembly pivotally connected to the second pivot holes of the clamping sleeve and having:
• a top surface having a top hole formed through one end of the top surface distal to the first shaft rack;
• and
• two sidewalls, each sidewall having:
• a first abutting edge intersected by the top surface of the stretcher assembly and the sidewall;
• a second abutting edge connected with the first abutting edge and being distal to the first shaft rack;
• and
• a pivot hole formed through the sidewall to align with the pivot hole of the other sidewall, and pivotally connected to the second pivot holes of the clamping sleeve, wherein a distance from the pivot hole to the first abutting edge is smaller than a distance from the pivot hole to the second abutting edge.