JPH0630247U - Full swing work machine - Google Patents

Abstract

(57) [Abstract] [Purpose] As a means for establishing an ultra-small turning machine (swinging machine in the vehicle width), it is possible to maintain both maintainability and pipe distribution, and separate the hydraulic oil tank and fuel tank. A structure that enables prevention of fuel temperature rise due to A lower traveling body 1, a machine room which is mounted on the lower traveling body so as to be capable of turning and accommodates an engine, and an upper revolving body 2 in which a cab and an oil storage tank are provided in front of the machine room, respectively. A hydraulic oil tank comprising: a hydraulic pump provided in the machine chamber behind the oil tank of the upper revolving structure, wherein the oil storage tank is an integrated hydraulic oil tank and a fuel tank. 5a and fuel tank
5b was separated and the directional control valve 6 was placed between them.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improvement of a full swing working machine.

[0002]

[Prior art]

 FIG. 1 shows a known full swing type working machine, in which an upper swing body 2 is mounted on a lower traveling body 1 so as to be swingable via turning wheels. A front attachment (working machine) 3 is attached to the front of the upper revolving structure 2, a counterweight 4 is attached to the rear, a fuel tank and a hydraulic oil tank are attached to the right, and a cab is attached to the left. There is. 1) As such a full swing working machine, it is known that the cab is retracted to the machine room side and a direction switching valve is arranged between the oil storage tank and the pump in order to reduce the swing radius (actually, (Kaisho 63-100550). However, this has a problem in maintainability. In contrast to 2) and 1), it is also known that the oil storage tank is retracted to the pump side as shown in FIG. 2 and the direction switching valve is arranged in front of the oil storage tank (Japanese Patent Application No. 3-19089). ). Regarding this, the maintainability around the directional control valve was improved, but as shown in Fig. 2, the piping arrangement was complicated, assembly took a long time, and the piping became long, leading to an increase in pressure loss. There's a problem. 3) Also, in both 1) and 2) above, when the hydraulic oil tank and the fuel tank are integrated, the increase in the hydraulic oil temperature also raises the fuel temperature, leading to a decline in performance.

[0003]

[Problems to be solved by the device]

 As a means to establish an ultra-small swivel machine (in-vehicle swivel machine), it is possible to achieve both maintainability and pipe maneuverability, and to prevent fuel temperature rise by separating the hydraulic oil tank and fuel tank. Aim for a possible configuration.

[0004]

[Means for Solving the Problems]

 An undercarriage 1, a machine room that is mounted on the undercarriage so as to be capable of turning and accommodates an engine, an upper revolving structure 2 in which a cab and an oil storage tank are provided in front of the machine room, In a fully swivel work machine, which is composed of a hydraulic pump provided in the machine room behind the body oil storage tank, and the oil storage tank is a combination of a hydraulic oil tank and a fuel tank, the hydraulic oil tank 5a and the fuel The tank 5b was separated, and the direction switching valve 6 was positioned between them.

[0005]

【Example】

 A description will be given based on FIG. As is apparent from FIG. 3, in the present invention, the oil storage tank is divided into the hydraulic oil tank 5a and the fuel tank 5b, and the direction switching valve 6 is arranged between them. In this way, the maintainability can be ensured by dividing the hydraulic oil tank 5a and the fuel tank 5b and providing inspection doors on the side and above between the hydraulic oil tank 5a and the fuel tank 5b. Further, the connection point of the pipe 7 with the attachment 3 and the direction switching valve 6 are close to each other, and the maneuverability of the pipe 7 is improved. Furthermore, since the hydraulic oil tank 5a and the pump 8 are close to each other, the suction line can be easily routed.

[0006]

【effect】

 The hydraulic oil tank and the fuel tank are separated, and the directional switching valve is arranged between them, so the maintenance of the pipe 7 is further improved, the ease of assembly and the pressure loss of the pipe can be reduced. And Further, since the oil storage tank is divided into the hydraulic oil tank 5a and the fuel tank 5b, it becomes possible to prevent performance deterioration due to an increase in fuel temperature.

[Brief description of drawings]

FIG. 1 is a side view of a known construction machine.

FIG. 2 is a known example in which the oil storage tank is retracted to the pump side.

FIG. 3 is a plan view around a cab according to the present invention.

[Explanation of symbols]

1 Lower traveling structure 2 Upper revolving structure 3 Front attachment 4 Counterweight 5a Hydraulic oil tank 5b Fuel tank 6 Direction switching valve 7 Piping 8 Pump

Claims (1)

[Scope of utility model registration request] 1. An undercarriage (1), a machine room which is rotatably mounted on the undercarriage and accommodates an engine, and an upper part provided with a cab and an oil storage tank at the front of the machine room. Full swing type in which the revolving structure (2) and a hydraulic pump provided in the machine chamber behind the oil reserving tank of the upper revolving structure are integrated into the oil reserving tank, and the hydraulic oil tank and the fuel tank are integrated. In the working machine, the hydraulic oil tank (5
The fuel tank (5b) is separated from a), and the directional control valve (6) is interposed between them.
A fully revolving type working machine characterized by locating.