Take-up and pay-off device for railway communication cable construction

The utility model discloses a take-up and pay-off device for railway communication cable construction. Wherein the winding mechanism is arranged on the bearing plate and used for winding a cable, theidler wheel mechanism is used for supporting the bearing plate in a rolling mode, the push rod is used for pushing the bearing plate, at least one notch is formed in the corresponding position of an idler wheel ring of the idler wheel mechanism, and an arc-shaped block pushed by a compression spring is arranged in the notch. According to the utility model, when a rail needs to be climbed over; thearc-shaped block is pressed on the rail; due to the gravity of the bearing plate, when the bearing plate is pushed, the arc-shaped blocks compress the compression springs to retract into the roller rings, so that the rail is clamped in the notches, when the bearing plate is continuously pushed, the roller rings roll forwards, the notches can be gradually separated from the rail, and in the process, the arc-shaped blocks r