Apparatus for fixing hydraulic pipes for construction equipment

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. The apparatus for fixing hydraulic pipes includes a first return joint pipe having an inlet port joint-connected to a main control valve, a second return joint pipe having an outlet port joint-connected to an oil cooler, a return pipe block mounted on an upper frame between a frame to which a working device is fixed and a swing motor, and joint-connected to an outlet port of the first return joint pipe and an inlet port of the second return joint pipe, respectively, and a third return joint pipe having an inlet port joint-connected to the return pipe block and an outlet port joint-connected to the hydraulic tank. The return pipe block is mounted on the upper frame to joint-connect the first and second return joint pipes, and the third return joint pipe is joint-connected to the return pipe block and the hydraulic tank, respectively, after the swing motor is mounted on the upper frame.

1 . An apparatus for fixing hydraulic pipes for construction equipment including return pipes for returning hydraulic fluid from a main control valve to a hydraulic tank or an oil cooler, the apparatus comprising:
 a first return joint pipe having an inlet port joint-connected to the main control valve;   a second return joint pipe having an outlet port joint-connected to the oil cooler;   a return pipe block mounted on an upper frame between a frame to which a working device is fixed and a swing motor, and joint-connected to an outlet port of the first return joint pipe and an inlet port of the second return joint pipe, respectively; and   a third return joint pipe having an inlet port joint-connected to the return pipe block and an outlet port joint-connected to the hydraulic tank;   wherein the return pipe block is mounted on the upper frame to joint-connect the first and second return joint pipes, and the third return joint pipe is joint-connected to the return pipe block and the hydraulic tank, respectively, after the swing motor is mounted on the upper frame.   
   
   
       2 . The apparatus of  claim 1 , wherein the return pipe block is mounted on the upper frame in front of the swing motor. 
   
   
       3 . The apparatus of  claim 1 , wherein a hydraulic hose or pipe is used as the third return joint pipe.