Pulling-out device for prefabricated concrete support wall

A pulling-out device for a prefabricated concrete support wall, a vertical hollow tube being pre-buried in the prefabricated concrete support wall, the pulling-out device comprising:

• a pulling-out mechanism that is a steel stranded wire and is disposed in the hollow tube by penetration, a lower end of the pulling-out mechanism being fixedly arranged in the prefabricated concrete support wall and positioned at a lower end of the hollow tube;
• a first fixing device for tensing the pulling-out mechanism and arranged at an upper end of the pulling-out mechanism, the first fixing device not being connected with the prefabricated concrete support wall, wherein:
• a groove is formed in an upper end of the prefabricated concrete support wall,
• a U shaped protecting plate is arranged in the groove,
• the first fixing device comprises a rectangular steel and a first steel stranded wire clamp, which are arranged at upper end surfaces of the U shaped protecting plate and positioned in the groove,
• an upper end of the rectangular steel is open, a lifting hole being formed in a side surface of the rectangular steel,
• the first steel stranded wire clamp is arranged in the rectangular steel,
• an upper end of the steel stranded wire passes through the U shaped protecting plate and the rectangular steel and is fixed to the rectangular steel through the first steel stranded wire clamp, and
• the rectangular steel contacts an end surface of the groove under action of the steel stranded wire.

A pulling-out device for a prefabricated concrete support wall, a vertical hollow tube being pre-buried in the prefabricated concrete support wall, the pulling-out device comprising:

• a pulling-out mechanism that is a steel boom and is disposed in the hollow tube by penetration, a lower end of the pulling-out mechanism being fixedly arranged in the prefabricated concrete support wall and positioned at a lower end of the hollow tube, an external thread being arranged at an upper end of the steel boom;
• a first fixing device for tensing the pulling-out mechanism and arranged at an upper end of the pulling-out mechanism, the first fixing device not being connected with the prefabricated concrete support wall and comprising a sleeve provided with an internal thread, wherein:
• a lower end of the sleeve is in threaded connection with the upper end of the steel boom,
• an upper end of the sleeve is in threaded connection with a lifting ring,
• a reserved hole which is coaxial with and communicates with the hollow tube is formed in the upper end surface of the prefabricated concrete support wall, and
• a diameter of the reserved hole is larger than that of the hollow tube.