기능

• It is a jack for earth retaining work that can be easily expanded and contracted with an electric screwdriver or wrench.
• By using a dedicated work rod, it is safe to install and remove from the ground without entering the excavation yard.
• With the gear structure, there is no need to worry about the jack shrinking due to water leakage like the hydraulic type.
• With an electric screwdriver, you can adjust the amplitude in about 5 seconds, which greatly increases the work speed.
• General temporary earth retention for small-scale excavation works such as gas pipe burial works, water and sewage works, etc.
• Agricultural village drainage, underground electric wire burial work, structural foundation reinforcement work, seismic reinforcement work, elevated road foundation reinforcement work, etc.