Cable reel placing device capable of braking

The utility model relates to a braking cable reel placing device, which is characterized in that a frame body is provided with a supporting plate, an outer rail and a braking driving component are fixedly arranged on the supporting plate, inner rails are connected with the supporting plate in a sliding manner, telescopic driving shafts are arranged on two sides of the braking driving component, and the driving shafts are fixedly connected with the inner rails on the corresponding sides respectively; the outer rails are arranged on the outer sides of the inner rails on the corresponding sides respectively, an upper protruding part is arranged at the upper end of one side of each inner rail, a lower open groove is formed in the lower end of one side of each inner rail, each outer rail comprises a horizontal part and a vertical part arranged on one side of the upper end of the horizontal part, the upper protruding parts of the inner rails are arranged on the horizontal parts of the outer rails, and the horizonta