JP6859846B2 - Construction machinery - Google Patents

Description

The present invention relates to a construction machine having a fuel pump for feeding fuel to a fuel tank, and more particularly to a fuel hose accommodating structure of the fuel pump.

Conventionally, as in Europe, for example, a construction machine body provided with a fuel tank has been known so that fuel can be supplied from a drum can to a fuel tank of a construction machine at a work site.

For example, the construction machine of Patent Document 1 includes a self-propelled vehicle body equipped with an engine for driving a hydraulic pump, a hydraulic oil tank provided in the vehicle body and storing hydraulic oil for supplying the hydraulic pump, and the hydraulic oil tank. Fuel is supplied to the fuel tank from a fuel tank that is installed in the vehicle body adjacent to the hydraulic oil tank and stores fuel for supplying to the engine, and a container that is installed near the hydraulic oil tank and the fuel tank and stores fuel for replenishment. A fuel pump that injects fuel, a long suction hose that is provided by connecting the base end side to the suction port of the fuel pump, and the tip side serves as a suction port to suck the fuel in the container toward the fuel pump, a hydraulic oil tank, and It consists of a tank cover that covers the upper side of the fuel tank so that it can be opened and closed.

Japanese Unexamined Patent Publication No. 2013-79547

However, in a construction machine such as Patent Document 1, the tank cover provided with the suction port accommodating case on the inner surface is rotated around the lower horizontal rotation support member. Therefore, if fuel leaks from the vicinity of the suction port, there is a problem that the fuel flows into the machine room through the tank cover.

Further, since it is difficult to secure a fixed space for the fuel hose, the fuel hose is provided at a relatively high position. For this reason, it is troublesome to refuel by getting on and off between the crawler of the hydraulic excavator and the drum can.

The present invention has been made in view of the above points, and an object of the present invention is to enable safe and easy fuel supply work using a fuel hose.

In order to achieve the above object, in the present invention, a fuel hose accommodating portion is provided on the inner surface of a cover that opens outward around a substantially vertical shaft.

Specifically, in the first invention,
With the engine
A fuel tank that stores the fuel consumed by the above engine,
A fuel pump that sends fuel to the above fuel tank,
A construction machine body having a machine room for accommodating the engine, the fuel tank, and the fuel pump,
In a construction machine equipped with an opening / closing cover that covers the machine room,
The opening / closing cover is configured to open to the outside of the machine room in a plan view around a substantially vertical rotation axis.
A fuel hose accommodating portion for accommodating a fuel hose connected to the fuel pump is provided on the inner surface of the opening / closing cover.

According to the above configuration, the fuel hose accommodating portion is provided on the back surface of the opening / closing cover that opens to the outside of the machine room around a substantially vertical rotation axis, so that when the opening / closing cover is opened, it stands on the ground or the like. The fuel hose can be taken out as it is, and the tip of the hose can be inserted into a drum or the like on the ground to perform refueling work. Further, even if fuel spills from the tip of the fuel hose, the fuel hose can be attached and detached outside the machine room, so that the machine room is not contaminated. The "substantially vertical rotation shaft" does not have to be a completely vertical rotation shaft, but may be a slightly tilted rotation shaft.

In the second invention, in the first invention,
The fuel pump is provided at the bottom of the machine room.
The fuel hose accommodating portion is provided on the lower side of the inner surface of the opening / closing cover.

According to the above configuration, since the fuel hose accommodating portion is provided on the lower side of the inner surface of the opening / closing cover, it is not necessary to lift the fuel hose high to perform the attachment / detachment work, the work is easy, and the fuel does not easily spill.

In the third invention, in the first or second invention,
A tip accommodating portion for accommodating the tip of the fuel hose is provided on the inner surface of the opening / closing cover.
The tip accommodating portion is provided with a discharge portion capable of discharging the fuel accumulated inside.

According to the above configuration, the tip of the fuel hose can be easily taken in and out, and even if fuel spills from the tip, the machine interior is not polluted. Further, even if fuel is accumulated in the tip accommodating portion, it can be discharged without polluting the ground or the like.

In the fourth invention, in any one of the first to third inventions,
The construction machine body is provided with a driver's cab and is rotatably supported by swivel bearings.
The machine room is provided on the side of the driver's cab.
The fuel pump is provided at the bottom of the machine room.
The opening / closing cover is provided on the side surface of the machine room.

According to the above configuration, the fuel hose can be easily taken out from the fuel hose accommodating portion provided on the inner surface of the opening / closing cover opened at an appropriate height while standing on the ground to easily perform the refueling work.

In the fifth invention, in any one of the first to fourth inventions,
It is a hydraulic excavator,
The fuel pump is provided at the bottom of the machine room surrounded by the fuel tank, the hydraulic oil tank and the control valve.

According to the above configuration, the fuel pump and the fuel hose accommodating portion can be provided by utilizing the narrow space.

As described above, according to the present invention, an opening / closing cover is provided so as to open around a substantially vertical rotation axis to the outside of the machine room in a plan view, and the opening / closing cover is connected to a fuel pump on the inner surface of the opening / closing cover. Since the fuel hose accommodating portion for accommodating the fuel hose is provided, the fuel supply work using the fuel hose can be performed safely and easily.

It is a side view which shows the opening and closing cover in an open state and its surroundings in an enlarged manner. It is a side view which shows the hydraulic excavator which concerns on embodiment of this invention. It is a top view which shows the opening and closing cover in an open state and its surroundings in an enlarged manner. It is an enlarged side view of the IV part of FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 2 shows a hydraulic excavator 1 as a construction machine according to an embodiment of the present invention. The hydraulic excavator 1 includes, for example, a lower traveling body 2 having a crawler or the like capable of traveling, a swivel bearing 3, and the swivel bearing 3. It is provided with an upper swivel body 4 as a construction machine main body that is supported so as to be swivelable via.

The upper swivel body 4 includes a swivel frame 5 provided with a swivel bearing 3, an cab 6, and an attachment 7 swingably supported by a boom foot (not shown) on the front side of the swivel frame 5. .. A machine room 8 is provided on the side of the driver's cab 6, that is, on the right side of the attachment 7, and a counterweight 9 is provided behind the machine room 8. That is, the machine room 8 is provided in a relatively narrow area on the front side of the counterweight 9 on the right side of the upper swing body 4.

As shown in FIG. 1, an engine (not shown) is provided on the rear side of the machine room 8, and an opening / closing cover 10 for opening and closing the machine room 8 is provided on the front side of the engine. ing. A fuel tank 11 for storing fuel consumed by the engine is provided on the front side of the opening / closing cover 10 when the opening / closing cover 10 is opened. A hydraulic oil tank 12 for storing hydraulic oil for driving a hydraulic device such as a lower traveling body 2 and an attachment 7 is provided on the rear side after opening the opening / closing cover 10. A main control valve 13 for controlling the flow of hydraulic oil is provided between the hydraulic oil tank 12 and the fuel tank 11. A fuel pump 14 for feeding fuel to the fuel tank 11 is provided at the bottom of the machine room 8 on the opening / closing cover 10 side (right side) of the main control valve 13. The fuel pump 14 can be rotated by, for example, the electric power of a battery built in the hydraulic excavator 1. A tank-side hose 15 is provided between the fuel pump 14 and the fuel tank 11 so that both ends are connected to the discharge port 14a of the fuel pump 14 and the fuel tank 11, respectively.

As shown enlarged in FIG. 4, the opening / closing cover 10 is provided on the side surface of the machine room 8 so as to open around the substantially vertical rotation shaft 10a to the outside of the machine room 8 in a plan view. The opening / closing cover 10 is provided with a fuel hose accommodating portion 17 for accommodating the fuel hose 16 connected to the suction port 14b of the fuel pump 14 on the inner surface of the opening / closing cover 10.

On the inner surface of the opening / closing cover 10, a tip accommodating portion 18 for accommodating the filter portion 16a provided at the tip of the fuel hose 16 is provided. The tip accommodating portion 18 has, for example, a rectangular parallelepiped shape having an open upper portion, and is provided with a discharge pipe 19 as a discharge portion capable of discharging the fuel accumulated inside. For example, it is preferable to provide a cock or the like in the discharge pipe 19 so that the fuel can be discharged after the bucket container is placed below.

As described above, since the fuel hose accommodating portion 17 is provided on the back surface of the opening / closing cover 10 that opens outward around the substantially vertical rotation shaft 10a, when the opening / closing cover 10 is opened as shown in FIG. In addition, the fuel hose 16 can be taken out while standing on the ground or the like, and the filter portion 16a at the tip thereof can be inserted into a drum can or the like on the ground or the like to perform refueling work. Further, after the replenishment work is completed, the operator can accommodate the filter portion 16a at the tip in the tip accommodating portion 18 at an appropriate height while standing on the ground.

Further, even if fuel spills from the tip of the fuel hose 16, the fuel hose 16 can be attached and detached outside the machine room 8 as shown in FIG. 3, so that the inside of the machine room 8 is not contaminated.

In particular, by providing the fuel hose accommodating portion 17 on the lower side of the inner surface of the opening / closing cover 10, it is not necessary to lift the fuel hose 16 high to perform the attachment / detachment work, the work is easy, and the fuel can be further prevented from spilling.

In the present embodiment, the tip of the fuel hose 16 can be easily taken in and out while standing on the ground or the like in the tip accommodating portion 18 provided on the lower side of the inner surface of the opening / closing cover 10, and fuel is accumulated in the tip accommodating portion 18. However, since it is sufficient to discharge the fuel from the discharge pipe 19 to the inside of the bucket or the like, the fuel can be discharged without polluting the ground or the like.

Further, since the fuel pump 14 is provided at the bottom of the machine room 8 surrounded by the fuel tank 11, the hydraulic oil tank, and the control valve, the fuel pump 14 and the fuel hose accommodating portion 17 are provided by utilizing a narrow space. Can be done.

Therefore, according to the hydraulic excavator 1 according to the present embodiment, the fuel supply work can be performed while standing on the ground or the like, and the fuel does not spill into the machine room 8, so that the workability of the fuel supply using the fuel hose 16 is extremely high. It can be done safely and efficiently.

(Other embodiments)
The present invention may have the following configuration with respect to the above embodiment.

That is, in the above embodiment, the construction machine is a hydraulic excavator 1, but the present invention may be applied to a construction machine other than the hydraulic excavator, and is particularly small and small and small in size and can be maintained from the ground or the like. It is effective to apply to.

In the above embodiment, the fuel hose accommodating portion 17 is provided on the inner surface of the opening / closing cover 10 on the right side of the machine room 8 on the side of the driver's cab 6, but the position is not limited to this. In short, the fuel hose accommodating portion 17 may be provided on the inner surface of the opening / closing cover having a space capable of accommodating the fuel tank 11 connected to the fuel pump 14, particularly within a range that can be reached from the ground or the like.

In the above embodiment, the hydraulic excavator 1 has a crawler as the lower traveling body 2, but it may be a wheel or one fixed to a swivel base provided on a deck or the like. In short, it is preferable to provide the fuel hose accommodating portion 17 on the inner surface of the opening / closing cover that opens outward around a substantially vertical rotation shaft at a position where the fuel hose 16 can be attached / detached while standing on the ground, deck, or the like.

It should be noted that the above embodiments are essentially preferable examples, and are not intended to limit the scope of the present invention, its applications and applications.

1 Hydraulic excavator (construction machinery)
2 crawler
3 Swing bearing
4 Upper swivel body (construction machine body)
5 swivel frame
6 Driver's cab
7 attachment
8 Machine room
9 counterweight
10 Open / close cover
10a rotating shaft
11 Fuel tank
12 Hydraulic oil tank
13 Main control valve
14 Fuel pump
14a Discharge port
14b Inhalation port
15 Tank side hose
16 Fuel hose
16a filter section
17 Fuel hose housing
18 Tip housing
19 Discharge pipe

Claims (5)

With the engine
A fuel tank that stores the fuel consumed by the above engine,
A fuel pump that sends fuel to the above fuel tank,
A construction machine body having a machine room for accommodating the engine, the fuel tank, and the fuel pump,
In a construction machine equipped with an opening / closing cover that covers the machine room,
The opening / closing cover is configured to open to the outside of the machine room in a plan view around a substantially vertical rotation axis.
Fuel hose accommodating portion for accommodating the fuel hose for a fuel supplying work connected to the fuel pump is definitive the inner surface of the cover, outwardly than the construction machine body in a plan view during an opening of the cover, and the fuel A construction machine characterized in that the fuel spilled during replenishment is installed at a position where it does not flow into the machine chamber. In the construction machine according to claim 1,
The fuel pump is provided at the bottom of the machine room.
The fuel hose accommodating portion is a construction machine characterized in that it is provided on the lower side of the inner surface of the opening / closing cover. In the construction machine according to claim 1 or 2.
A tip accommodating portion for accommodating the tip of the fuel hose is provided on the inner surface of the opening / closing cover.
A construction machine characterized in that the tip accommodating portion is provided with a discharging portion capable of discharging fuel accumulated inside. In the construction machine according to any one of claims 1 to 3.
The construction machine body is provided with a driver's cab and is rotatably supported by swivel bearings.
The machine room is provided on the side of the driver's cab.
The fuel pump is provided at the bottom of the machine room.
The opening / closing cover is a construction machine characterized in that it is provided on the side surface of the machine room. In the construction machine according to any one of claims 1 to 4.
It is a hydraulic excavator,
A construction machine characterized in that the fuel pump is provided at the bottom of the machine room surrounded by the fuel tank, the hydraulic oil tank and the control valve.

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