JP2006299515A - Opening/closing cover for fuel tank of construction machinery - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable a worker to easily watch equipment and easily perform work, during maintenance inspection etc. <P>SOLUTION: An opening/closing cove 7 for a fuel tank 10 of construction machinery 1, which is provided on one side surface of the construction machinery 1, is pivotally supported by a vertical pin 9a, so as to be laterally openable/closable. The fuel tank 10 is integrally mounted on the inner surface of the opening/closing cover 7. When the cover 7 is opened, the fuel tank 10 is moved integrally with the cover 7, so that the maintenance inspection of equipment inside the fuel tank 10 can be performed. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an opening / closing cover for a fuel tank of a construction machine (hydraulic excavator).

  FIG. 5 is a side view of the construction machine (hydraulic excavator) disclosed in Patent Document 1. FIG. In FIG. 5, a is a crawler type traveling body, b is a swivel bearing, c is an upper revolving body, d is a boom, e is an arm, f is a bucket, and g is a canopy. The upper swing body c is formed by placing an engine or the like on a swing frame and covering it with an upper outer shell h and a lower outer shell i.

  FIG. 6 is a side view of the fuel tank opening / closing cover disclosed in Patent Document 1, and shows a state in which the opening / closing cover is opened. In FIG. 6, j is a fuel tank. k is an opening / closing cover of the fuel tank j. At one end of the opening / closing cover k, a flat base p having a hinge p1 is provided. The flat base p is in an open state and is almost horizontal by a stopper so that a plastic tank can be temporarily placed when oil is supplied onto the flat base p. q is a rod.

Japanese Patent Application 2003-348708 (unpublished)

  As an engine of a construction machine (hydraulic excavator), a diesel engine is usually used, and a fuel tank is provided to supply light oil to the engine.

  Some fuel tanks are exposed to the outside, but usually the fuel tank is covered with an open / close cover. When refueling, open the open / close cover, remove the cap from the fill port, and refuel. .

  FIG. 7 is a perspective view of an opening / closing cover of another fuel tank, showing a state in which the opening / closing cover is opened. In FIG. 7, the fuel tank j is fixed to the inside of one side in front of the upper swing body c of the construction machine (hydraulic excavator) by a bolt (not shown). The fuel tank j usually has no strength role, and only a fuel hose is connected to the engine. k is an opening / closing cover of the fuel tank j. The lower end of the open / close cover k is pivotally supported by a lateral pin (hinge) o at the front upper end of the lower outer shell i so as to be opened and closed in the vertical direction. m is a fuel filler port provided on the upper surface of the fuel tank j, and n is a cap thereof.

  The fuel tank j is refueled by an operator opening the opening / closing cover k downwards, removing the cap n of the fuel filler port m, lifting and tilting a separately prepared fuel tank (light oil), and refueling. A cap n is attached to the mouth m, and the opening / closing cover k is closed.

  Inside the construction machine inside the fuel tank j, there are a large number of swing motors and pipes (not shown). When performing maintenance and inspection of these devices, or when replacing devices due to overhaul, etc., An operator must look into a narrow interior or reach out to a narrow space. In some cases, the opening / closing cover k and the fuel tank j must be removed and the inside of the machine must be opened before starting work, resulting in poor work efficiency and high maintenance costs.

The present invention has been devised in view of such problems of the prior art. The fuel tank also moves together with the opening / closing cover at the time of opening or closing the device, such as when performing maintenance or inspection of the device. It is an object of the present invention to provide a fuel tank opening / closing cover for a construction machine that allows the operator to easily see the equipment and facilitate the work by reducing the inside of the machine, thereby reducing the maintenance cost.

  In order to achieve the above object, a fuel tank opening / closing cover for a construction machine according to the present invention is provided on one side of the construction machine and is pivotally supported by a vertical pin so that it can be opened and closed laterally. The fuel tank is integrally attached to the inner surface of the open / close cover. When the cover is opened, the fuel tank moves integrally with the cover, so that maintenance and inspection of the equipment inside the fuel tank is possible. It is what has become.

  Preferably, the fuel tank has a fuel filler opening on the upper surface, and a small opening / closing cover is attached to the fuel tank opening / closing cover at a position corresponding to the fuel filler opening of the fuel tank.

  Next, the operation of the present invention will be described. Normally, when supplying fuel to the fuel tank, open the small opening / closing cover provided on the upper surface of the opening / closing cover, remove the cap of the filler port, attach the cap to the filler port after refueling, and attach the small opening / closing cover. Close. On the other hand, when performing maintenance and inspection of equipment inside the fuel tank or replacing equipment, open the open / close cover, move the fuel tank integrally with the open / close cover, and open the inside of the machine. Make it easier for workers to see the equipment and work.

  The open / close cover of the fuel tank of the construction machine according to the present invention opens the open / close cover of the fuel tank and moves the fuel tank laterally integrally with the open / close cover when the equipment is inspected or replaced. Since the inside of the machine is opened, an operator can easily see the inside of the machine, maintenance and inspection of equipment and replacement of equipment can be facilitated, and maintenance costs can be reduced.

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

  FIG. 1 is a side view of a construction machine (hydraulic excavator) according to the present invention, showing a state where a boom is removed. FIG. 2 is a perspective view of the opening / closing cover of the fuel tank of the construction machine according to the present invention. FIG. 3 is a perspective view of the fuel tank opening / closing cover opened. FIG. 4 is a perspective view showing a state in which the fuel tank opening / closing cover is removed. 1 to 4, reference numeral 1 denotes a construction machine (hydraulic excavator). 2 is a crawler type traveling body. 3 is an upper rotating body, and 4 is a swivel bearing. An engine or the like (not shown) is mounted on the upper swing body 3, and the outside thereof is covered with the lower outer shell 5 and the upper outer shell 6.

  Reference numeral 7 denotes an opening / closing cover for the fuel tank 10. The opening / closing cover 7 is provided on the side surface in the right direction toward the front of the construction machine 1. A hinge 9 pivotally supports the opening / closing cover 7. The opening / closing cover 7 is attached to the upper outer shell 6 by a vertical pin 9a of a hinge 9 so as to be opened and closed in the lateral direction. Reference numeral 9b denotes a split pin. After the opening / closing cover 7 is attached to the upper outer shell 6 with the vertical pin 9a, the vertical pin 9a is inserted from the side into the lower end portion of the vertical pin 9a so as not to come out of the hinge 9, and the tip is expanded.

  A small opening / closing cover 8 is provided on the upper surface of the opening / closing cover 7 and is pivotally supported by a hinge 8a so as to be opened and closed in the vertical direction. When supplying fuel to the fuel tank 10, the small opening / closing cover 8 is opened and closed to supply fuel to the fuel tank 10 provided in the lower part thereof.

  The fuel tank 10 is integrally attached to the inner surface of the opening / closing cover 7, and moves in the lateral direction integrally when the opening / closing cover 7 is opened. 10a is a fuel filler opening provided on the upper surface of the fuel tank 10, and 10b is a cap thereof.

  11 is a hydraulic oil tank provided inside the upper outer shell 6, and 11 a is a cap of an oil supply port provided on the upper surface of the hydraulic oil tank 11. Reference numeral 12 denotes a turning motor for turning the upper turning body 3, and 13 denotes a boom turning hydraulic cylinder.

  Next, the operation of the embodiment of the present invention will be described. Normally, when fuel is supplied to the fuel tank 10, the small opening / closing cover 8 provided on the opening / closing cover 7 is opened, the cap 10b of the fuel filler port 10a is removed, and the cap 10b is attached to the fuel filler port 10a after refueling. Then, close the small opening / closing cover 8. On the other hand, when performing maintenance or inspection of equipment inside the fuel tank 10 or replacing equipment, the opening / closing cover 7 is opened, and the fuel tank 10 is moved laterally integrally with the opening / closing cover 7 to move the machine. Opening the interior makes it easier for workers to see the equipment and to work.

  The present invention is not limited to the embodiments described above, and various modifications can be made without departing from the gist of the present invention. For example, if the fuel filler port of the fuel tank extends from the inner side surface of the fuel tank, the fuel tank can be refueled by opening the fuel tank cover without the small opening / closing cover. Further, the fuel tank may be provided with an oil supply port that extends through the cover of the fuel tank.

In the side view of the construction machine (hydraulic excavator) of this invention, the state which removed the boom is shown. It is a perspective view of the opening / closing cover of the fuel tank of the construction machine of this invention. It is a perspective view of the state which opened the opening-and-closing cover of the fuel tank. It is a perspective view which shows the state which removed the opening / closing cover of the fuel tank. It is a side view of the construction machine (hydraulic excavator) disclosed by patent document 1. FIG. In the side view of the opening-and-closing cover of the fuel tank indicated by patent documents 1, the state where the opening-and-closing cover was opened is shown. It is the perspective view of the opening / closing cover of another fuel tank, and the state which opened the opening / closing cover is shown.

Explanation of symbols

1 Construction machine (hydraulic excavator)
DESCRIPTION OF SYMBOLS 2 Crawler type traveling body 3 Upper revolving body 4 Swivel bearing 5 Lower outer shell 6 Upper outer shell 7 Fuel tank opening / closing cover 8 Small opening / closing cover 8a Hinge 9 Hinge 9a Vertical pin 10 Fuel tank 10a Oil supply port 10b Cap 11 Hydraulic oil tank 11a cap

Claims (2)

A fuel tank opening / closing cover provided on one side of the construction machine and pivotally supported by a vertical pin, which can be opened and closed laterally. The fuel tank is integrally attached to the inner surface of the opening / closing cover. When the cover is opened, the fuel tank moves integrally with the cover so that maintenance and inspection of the equipment inside the fuel tank is possible. The fuel tank has a fuel filler opening on an upper surface, and a small opening / closing cover is attached to the fuel tank opening / closing cover at a position corresponding to the fuel filler opening of the fuel tank. Opening and closing cover for fuel tank of construction machinery.

Images