Hydraulic pressure braking clamp device

The invention provides a hydraulic pressure braking clamp device which comprises a clamp base, a brake cylinder, a lever member, a lever pin and a clamp assembly. The brake cylinder mainly comprises a piston member, a push rod assembly, a gate adjustment assembly, a disc spring assembly and a manual adjustment shaft assembly. The clamp assembly mainly comprises a clamp left assembly, a clamp right assembly, a front gate piece and a rear gate piece. The clamp assembly and the brake cylinder are fixedly arranged on the clamp base. The brake cylinder brakes and remits a train brake disc by means of driving of the lever member to the clamp assembly. The hydraulic pressure braking clamp device can automatically adjust braking gaps between the gate pieces of a hydraulic pressure clamp and wheels, is good in adjustment accuracy, high in adjustment efficiency, safe, reliable, and compact in structure, meets railway vehicle installation requirements of lower floor boards, is convenient and fast in replacement of the expendable gate pieces, and saves maintenance time and cost.