Hydraulic tubing support structure and operating machine provided therewith

摘要

A hydraulic tubing support that reduces noise transmitted to an operator due to pulsation of hydraulic oil in a junction tube. The hydraulic tubing support structure includes a pair of left and right remote control valves for generating pilot pressures for the plurality of hydraulic actuators in response to an input operation performed on each operating lever, pump-side tubes and tank-side tubes respectively extending from the respective remote control valves, a junction tube for allowing communication of the tubes guided to below a floor plate through a through hole and communication of the tubes guided to below the floor plate through a through hole, and a middle reinforcement beam extending in a right-and-left direction and fixed to the lower surface of the floor plate. The junction tube is fixed to the middle reinforcement beam in a non-contact state with the floor plate.

主权项

1. A hydraulic tubing support structure in an operating machine including a plurality of hydraulic actuators, comprising:
a floor plate formed with a pair of left and right vertically penetrating through holes; a driver's seat provided on the floor plate; a pair of operating levers provided at both left and right sides of the driver's seat; a pair of left and right operation valves for generating pilot pressures for the plurality of hydraulic actuators in response to an input operation performed on each operating lever; a pair of left and right pump-side tubes respectively extending from the respective operation valves and guided to below the floor plate through the through holes; a pair of left and right tank-side tubes respectively extending from the respective operation valves and guided to below the floor plate through the through holes; a junction tube for allowing communication of the respective pump-side tubes guided to below the floor plate through the through holes and communication of the respective tank-side tubes guided to below the floor plate through the through holes; and a first reinforcement beam extending in a right-and-left direction and fixed to the lower surface of the floor plate, wherein the junction tube is fixed to the first reinforcement beam in a non-contact state with the floor plate, and the junction tube includes a tube main body for connecting the pair of left and right pump-side tubes and the pair of left and right tank-side tubes and a base member attached to the main body and fixed to the first reinforcement beam.