Abstract: Provided is a device for fixing hydraulic piping to prevent the hydraulic piping from sliding down even when the bolt for coupling a clamp which fixes the hydraulic piping is loosened by the vibration generated during operation. The device for fixing the hydraulic piping of construction equipment includes: a piping sheet fixed to a boom structure; upper and lower clamps constituted by a fixed part fixed to the piping sheet and a concave groove for supporting the hydraulic piping; a coupling member for fixing the fixed part to the piping sheet; a hydraulic pipe fixing plate mounted on the piping sheet; a connecting hole for connecting a main pipe, which is connected to a main control valve mounted on an upper rotating body, to the hydraulic pipe disposed on the boom structure; and a bolt and nut for fixing the connecting hole to the hydraulic pipe fixing plate.

Abstract: Provided is a device for fixing hydraulic piping to prevent the hydraulic piping from sliding down even when the bolt for coupling a clamp which fixes the hydraulic piping is loosened by the vibration generated during operation. The device for fixing the hydraulic piping of construction equipment includes: a piping sheet fixed to a boom structure; upper and lower clamps constituted by a fixed part fixed to the piping sheet and a concave groove for supporting the hydraulic piping; a coupling member for fixing the fixed part to the piping sheet; a hydraulic pipe fixing plate mounted on the piping sheet; a connecting hole for connecting a main pipe, which is connected to a main control valve mounted on an upper rotating body, to the hydraulic pipe disposed on the boom structure; and a bolt and nut for fixing the connecting hole to the hydraulic pipe fixing plate.

Abstract: Disclosed therein is an apparatus for fixing hydraulic pipes for a construction machine having a hydraulic pipe clamp fixing a plurality of pipes to a boom structure, including: a lower clamp (20) having a mounting hole (21); a clamp position setting member (22) for fixing the lower clamp (20) to one side of the boom structure (100) through a clamp support member (23) coupled to the mounting hole (21); an upper clamp (30) coupled onto the lower clamp (20) and having an interference prevention groove (31) in which a head portion (23a) of the clamp support member (23) is placed; and vibration-proof members (41,42) attached to the interiors of the clamps (20,30) to absorb vibration of the pipe (10). When the pipes (10) are assembled or disassembled, the lower clamp (20) is fixed to the boom structure to set the positions of the pipe and the clamp, and thus the assembly is greatly improved.

Abstract: Disclosed is a hydraulic system for controlling the degree of openness of an arm regeneration valve by driving an electronic proportional control valve during a combined operation of simultaneously operating an arm and a swing device.

Abstract: Disclosed therein is an apparatus for fixing hydraulic pipes for a construction machine having a hydraulic pipe clamp fixing a plurality of pipes to a boom structure, including: a lower clamp (20) having a mounting hole (21); a clamp position setting member (22) for fixing the lower clamp (20) to one side of the boom structure (100) through a clamp support member (23) coupled to the mounting hole (21); an upper clamp (30) coupled onto the lower clamp (20) and having an interference prevention groove (31) in which a head portion (23a) of the clamp support member (23) is placed; and vibration-proof members (41,42) attached to the interiors of the clamps (20,30) to absorb vibration of the pipe (10). When the pipes (10) are assembled or disassembled, the lower clamp (20) is fixed to the boom structure to set the positions of the pipe and the clamp, and thus the assembly is greatly improved.

Abstract: An apparatus for fixing hydraulic pipes for construction equipment is provided, which can facilitate joint connection of return pipes having a large size to a hydraulic tank, in an environment where a working space of an upper frame is narrow such as in a small swing radius construction equipment, by a return pipe block for returning hydraulic fluid of a main control valve to the hydraulic tank without being interfered with a swing motor and so on.

Abstract: An apparatus for fixing hydraulic pipes for a zero tail swing excavator is provided, which can simplify an assembling process of hydraulic pipes and improve the workability by dividedly forming intermediate sides of the hydraulic pipes for supplying hydraulic fluid from a main control valve to hydraulic cylinders and jointly fixing the dividedly formed intermediate sides of the hydraulic pipes by a connection means in a narrow space between a boom and an upper swing structure due to the characteristic of the zero tail swing excavator.

Abstract: An apparatus for attachment of hydraulic valves for controlling working devices of heavy equipment is provided, which can reduce a lead time for attaching and assembling a main control valve, an accessory valve, and valve blocks for jointly connecting the respective valves with hydraulic piping, to an upper swing structure.