Self-locking anti-slip rail braking device

A self-locking anti-slip rail braking device, comprising:

• a trapezoid-shaped support (1), a lifting unit (2), a roller-and-wedge plate mechanism (3), a roller support (4), and a rail clamping unit (5),
• wherein the trapezoid-shaped support (1) is connected to a balance beam of a port facility at a lower surface of a balance beam, and the lifting unit (2) is connected to a middle part of the trapezoid-shaped support (1),
• wherein a lower end of the lifting unit (2) is hinged to two sides of the roller support (4),
• wherein the roller-and-wedge plate mechanism (3) is disposed on an upper end surface of the roller support (4), and the rail clamping unit (5) is provided at a middle part of the roller support (4),
• wherein an upper end of the rail clamping unit (5) is configured to match the roller-and-wedge plate mechanism (3), and a lower end of the rail clamping unit (5) serves as a rail clamping end corresponding to two lateral sides of a rail (7),
• wherein the trapezoid-shaped support (1) comprises a trapezoid-shaped supporting frame (8), wherein the trapezoid-shaped supporting frame is provided at a middle part thereof with a lifting wheel supporting plate (9), and is symmetrically provided at two ends of a lower part thereof with two inclined roller-pressing plates (10) which, together with a lower middle plate arranged below the lifting wheel supporting plate, form a trapezoid cross-sectional cavity with a longer base of the trapezoid as a bottom.