# US 2014/0360354 A1 · Construction machine

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- Number: US 2014/0360354 A1
- Document ID: US20140360354A1
- Status: Published application
- Kind: A1
- Application number: 14/287,676
- Filed: 2014-05-27
- Published: 2014-12-11
- Earliest claimed: 2013-06-07
- Assignees: Kobelco Construction Machinery Co., Ltd.
- Applicants: Kobelco Construction Machinery Co., Ltd.
- Inventors: Satoshi KURUSHIMA
- Web page: https://patentgrep.com/patent/US20140360354A1

## CPC

- E02F 9/2012: {Setting the functions of the control levers, e.g. changing assigned functions among operations levers, setting functions dependent on the operator or seat orientation}
- E02F 9/0875: {Arrangement of valve arrangements on superstructures (arrangement of hydraulic hoses E02F9/2275 takes precedence; valves per se E02F9/2267)}
- E02F 9/2275: {Hoses and supports therefor and protection therefor}
- E02F: DREDGING; SOIL-SHIFTING (winning peat E21C49/00)

## Abstract

Provided is a construction machine with valves and hoses whose routing operations are simplified. The construction machine includes an upper frame, a control valve assembly, remote control valves, an operation-pattern selector valve, remote control hoses, pilot hoses, and actuator hoses. The upper frame includes a bottom plate and a floor plate, allowing an operation seat to be provided on the upper frame. The control valve assembly and the operation-pattern selector valve are provided in an underfloor space between the bottom plate and the floor plate. A partition wall stands upright on the bottom plate at a rear side of the control valve assembly. The operation-pattern selector valve has a shaft and a handle connected thereto, disposed in such a horizontal posture that the shaft extends horizontally, at a front side of the control valve assembly as viewed from the operation seat.

## Claims

### Claim 1

A construction machine, comprising:
a lower travelling body;
an upper slewing body mounted on the lower travelling body to be slewable around a vertical axis;
a plurality of hydraulic actuators;
a control valve assembly which is an assembly of control valves configured to control respective actuations of the hydraulic actuators, respectively;
a plurality of remote control valves for operating the control valves, respectively;
an operation-pattern selector valve for selecting an operation pattern of combinations between the remote control valves and the control valves;
a plurality of remote control hoses which connect the remote control valves to the operation-pattern selector valve, respectively;
a plurality of pilot hoses which connect the control valves which connect the operation-pattern selector valve, respectively; and
a plurality of actuator hoses which connect the control valves to the hydraulic actuators, respectively, wherein:
the upper slewing body includes an upper frame, the upper frame including a bottom plate, and a floor plate disposed over the bottom plate with a distance, an operation seat being provided on the upper frame;
the control valve assembly and the operation-pattern selector valve are provided in an underfloor space between the bottom plate and the floor plate, a partition wall being provided to stand upright on the bottom plate at a rear side of the control valve assembly; and
the operation-pattern selector valve includes a tubular body, a shaft held in the body rotatably around an axis of the shaft, and a handle for switching operation, the handle extending from one end of the shaft in a direction orthogonal to the axis of the shaft, the operation-pattern selector valve being disposed in such a horizontal posture that the shaft extends horizontally, at a front side of the control valve assembly as viewed from an operator seated on the operation seat.

### Claim 2 (depends on 1)

The construction machine according to claim 1, wherein the operation-pattern selector valve includes a plurality of remote-control-hose connection ports to which the remote control hoses are connected, respectively, and the remote-control-hose connection ports are disposed higher than an upper surface of the control valve assembly.

### Claim 3 (depends on 1)

The construction machine according to claim 1, wherein the operation-pattern selector valve is disposed so as to locate the handle at a front end of the shaft.

### Claim 4 (depends on 1)

The construction machine according to claim 1, further comprising a valve mounting member disposed on the bottom plate, wherein the control valve assembly and the operation-pattern selector valve are mounted on the common valve mounting member.

### Claim 5 (depends on 1)

The construction machine according to claim 1, wherein the remote control hoses, the pilot hoses, and the actuator hoses are routed so as to pass around the control valve assembly in a state that: the pilot hoses are located lower than the remote control hoses and the actuator hoses; the remote control hoses are located higher than the pilot hoses and the actuator hoses; and the actuator hoses are located intermediately between the remote control hoses and the pilot hoses.