Chromium alloy bearing sliding way four-side telescopic butadiene rubber clamping plate

Disclosed is a chromium alloy bearing sliding way four-side telescopic butadiene rubber clamping plate. According to an improvement, an upper clamping portion of each clamping plate comprises an upper clamping plate plane, a clamping slope and a vertical face rack; the upper clamping plate planes are perpendicular to the vertical face racks, and an included angle between each clamping slope and the corresponding vertical face rack is an acute angle; bearing sliding ways are arranged on the upper clamping plate planes, transition open grooves are formed between the bearing sliding ways and the upper clamping plate planes, and blind groove spaces are formed in the bottoms of the bearing sliding ways; a slippage framework on each clamping plate comprises a lower slippage plane and a slippage ladder face, a bearing pin shaft is located on each lower slippage plane, a shaft pin bearing segment is arranged on each bearing pin shaft, a shaft pin step is arranged between each shaft pin bearing segment and the corresp