Ny-80g (type I) Bolt-type Tension Clamp Hydraulic Pressing Process Specifications

NY-80Gbolted type strain clamp is a matching hardware developed for GJ-80 galvanized steel strands. Its crimping construction process is carried out in accordance with DL/T 5285-2013 "Technical Specification for Hydraulic Crimping of Overhead Conductors and Ground Wires in Transmission and Transformation Engineering". For ease of operation, the following supplements are made.
2.dead end strain clamp Preparation before crimping
(1) Prepare the corresponding hydraulic press and steel mold (Φ24).
(2) Prepare gasoline and cotton yarn for cleaning the inner wall of the conductor and steel anchor.
(3) Understand the requirements of the corresponding position of bolted dead end clamp steel anchor.
2.2 Steel strand cleaning
2.1 Wire cleaning
(1) The length of the OA section is about 210mm. Use gasoline to clean the surface of the conductor.
(2) Clean the wire clamp body and the inner wall of the steel anchor steel pipe with gasoline.
2.3 Applying electrical grease
(1) After cleaning the outer layer of galvanized steel strands with gasoline and drying according to the second and third steps, apply a thin and even layer of electrical grease to cover the outer layer of strands.
(2) Use steel wire to brush the part coated with electrical grease along the axis of the galvanized strands. The surface of the galvanized steel strands that are in contact with the steel pipe after hydraulic pressure should be completely brushed.
2.4 Pipe threading
Rotate and push the steel strands from the steel anchor mouth until the end of the steel strands is 5mm out of the pipe mouth, and make a starting crimping mark at 170mm on the steel anchor body. (Note: When threading, follow the twisting direction of the steel strands and maintain the original pitch).
2.5 Hydraulic operation
(1) Steel anchor crimping length and crimping sequence. Note: When crimping, each subsequent die overlaps 1/3 of the previous die.