Abstract: A construction machine in which a fuel tank is mounted to enable the machine to work for a long time through one fueling.

Abstract: Provided is a construction machine in which a fuel tank is mounted to enable the machine to work for a long time through one fueling.

Abstract: A cab protection apparatus for protecting an operator from a cab structure that is deformed when an excavator turns upside down or a heavy object that drops on the cab is disclosed. The cab protection apparatus for a construction machine having a lower driving structure, an upper frame mounted to swing on the lower driving structure, a cab mounted on the upper frame, a working device rotatably mounted on the upper frame, and a protection structure mounted on an outside of the cab, includes a front guard hinge-fixed to a front support frame of the protection structure to be opened or closed so as to protect a front portion of the cab; and a locking device including a striker mounted on the front support frame and a latch mounted on the front guard to be locked to or unlocked from the striker.

Abstract: A fuel supply system for supplying a fuel to an engine mounted on an upper frame of heavy construction/forest equipment is provided. The fuel supply system includes a junction tank unit for interflowing a fuel supply line which is connected to a lower end of a primary fuel tank and a fuel supply line which is connected to a lower end of a secondary fuel tank, the fuel supply lines being connected in parallel to each other, a water separator connected to the junction tank unit via a fuel supply line, a fuel supply line for supplying the fuel to an engine from the water separator, and a fuel recovery line for recovering a remaining fuel from the engine to the primary fuel tank.

Abstract: A pipe layer having a swing speed adjustable system is provided, which can be used as a pipe layer or an excavator through replacement of attachments in accordance with work conditions, so that it serves as the pipe layer when it is required to pull up and carry a heavyweight oil pipe in order to lay the oil pipe under the ground, while it serves as the excavator when a quick swing work is required.

Abstract: A fuel supply system for supplying a fuel to an engine mounted on an upper frame of heavy construction/forest equipment is provided. The fuel supply system includes a junction tank unit for interflowing a fuel supply line which is connected to a lower end of a primary fuel tank and a fuel supply line which is connected to a lower end of a secondary fuel tank, the fuel supply lines being connected in parallel to each other, a water separator connected to the junction tank unit via a fuel supply line, a fuel supply line for supplying the fuel to an engine from the water separator, and a fuel recovery line for recovering a remaining fuel from the engine to the primary fuel tank.