JP2005145487A - Liquid spout device of construction machinery - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid spout device of a construction machinery in which a worker can easily open/close a cap even when the cap of a spout is heated, or a spout can be easily distinguished and identified even when a plurality of spouts are installed. <P>SOLUTION: A cap cover which is fitted so as to be opened/closed together with a cap is provided on the cap which is mounted on a spout in a freely openable/closable manner by the manual operation. The cap cover prevents the heat of the cap from being transferred to a hand to perform the opening/closing operation, and the spouts can be easily distinguished and identified by changing the color of the cap cover. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a liquid inlet device for injecting liquids such as fuel, hydraulic oil, and water, such as a fuel inlet of a fuel tank of a construction machine and a hydraulic oil inlet of a hydraulic oil tank.

  A construction machine, for example, a hydraulic excavator, which is a typical construction machine, includes a number of liquid inlet devices having an inlet for filling and replenishing various liquids such as fuel, hydraulic oil, and water. A cap that is manually opened and closed by an operator is attached to each of the injection ports (see, for example, Patent Document 1).

  A typical example of the cap is detachably fixed to the inlet by a screw or an engagement notch, etc., and is not damaged by contact with an obstacle or the like at the construction work site, or by a metal casting so as not to be damaged by mischief. Alternatively, a steel plate is formed to enable further locking.

  Among these caps, the cap provided in the fuel inlet of the fuel tank has a large work load and consumes a large amount of fuel as a feature of construction machinery. It is opened and closed several times to refuel.

JP 2003-211983 A

  The liquid inlet apparatus for a conventional construction machine in the form as described above has the following problems that are desired to be improved.

(1) Opening / closing operation:
In a fuel tank with high refueling frequency, since the inlet and the cap are installed on the outer surface of the machine body of the construction machine so that the refueling work can be easily performed, the cap is exposed to direct sunlight under the hot sun. In addition, since the machine body of the construction machine is compact, the fuel tank is often installed near a heat source such as an engine, and the tank is easily heated. Furthermore, although the opening and closing frequency of the cap is relatively low, the stored hydraulic oil, cooling water, and the like are heated at the injection port for hydraulic oil and lubricating oil, the injection port for engine cooling water, and the like. Therefore, the metal cap becomes hot, and when the opening / closing operation is necessary, the operator cannot directly touch it by hand, or the opening / closing operation cannot be performed sufficiently because it is hot.

(2) Differentiation of multiple inlets:
Construction machines are provided with a plurality of liquid inlets for filling and replenishing fuel, hydraulic oil, lubricating oil, cooling water, and the like. In particular, when a cap is used in common and an inlet is adjacent and a similar liquid is injected, it is easy to mistake the inlet and the type of liquid.

  The present invention has been made in view of the above-mentioned facts, and its technical problem is that, in a liquid inlet device of a construction machine, an operator can easily open and close even if the cap of the inlet is heated. Also, it is possible to easily distinguish and identify the injection ports even when a plurality of injection ports are installed.

  According to the present invention, as a liquid inlet device that solves the above technical problem, a cap that is freely opened and closed manually by a liquid inlet provided in a construction machine, and a cap that is opened and closed together with the cap. There is provided a liquid inlet device for a construction machine, including a cap cover that is fitted to be operable.

  According to the liquid inlet device of the construction machine configured according to the present invention, the cap cover that is attached to the liquid inlet so as to be openable and closable is provided with a cap cover that is integrated with the cap so as to be opened and closed. It has been. Therefore, even when the cap is heated, the cap cover is a separate body. For example, if the cap cover is formed of a material that is not easily heated, the cap can be easily opened and closed manually without being affected by heat. Even if there are a plurality of liquid inlets, the cap cover can be easily distinguished if, for example, the color is different.

  Hereinafter, a liquid injection device for a construction machine configured according to the present invention will be described in more detail with reference to the accompanying drawings illustrating a preferred embodiment of a hydraulic excavator that is a typical construction machine.

  A description will be given with reference to FIG. 1 showing an upper swing body which is a part of a body of a hydraulic excavator. The upper revolving body generally indicated by numeral 2 has a fuel inlet device 6 which is a liquid inlet device for injecting fuel into a fuel tank provided in the upper revolving body 2 in a recess 4 formed on the outer surface thereof. It has.

  The fuel inlet device 6 will be described with reference to FIG. 2 which is an enlarged view of a portion of the fuel inlet device 6 and FIGS. 3 to 5 which are enlarged detailed views of the components. The fuel inlet device 6 includes a cap 10 that can be freely opened and closed manually by a fuel inlet 8 (FIG. 5B), and a cap 10 that can be opened and closed integrally with the cap 10. A fitted cap cover 12 is provided.

  The cap 10 will be described mainly with reference to FIG. The cap 10 is well known to those skilled in the art, and is provided with a cylindrical dish-shaped cap body 10a formed by press-molding a steel plate and closed on one side, and an operation piece 10b. Cover 10c and a lock 10d provided at a portion closed by the cover 10c. Protrusions 10e for manual opening and closing are formed on the cylindrical outer periphery of the cap body 10a at equal intervals in the circumferential direction. The cap 10 is opened and closed by holding the cap body 10a with the fingers on the protrusion 10e on the outer periphery and turning the cap body 10a by a predetermined angle in the circumferential direction with respect to the injection port 8 (FIG. 5B).

  The cap cover 12 will be described mainly with reference to FIGS. The cap cover 12 is integrally formed of synthetic resin nylon. The cap cover 12 is placed on the periphery of a cylindrical dish-shaped cap body 10a (FIG. 3) of the cap 10, and has a cover body 12a having a circular opening 14 through which the cap 10 is inserted, and a cover 10c of the cap 10. And an opening 12b that exposes and opens the portion of the locking lock means 10d, and a pair of standing walls 12c and 12c that are provided upright on the edge of the opening 12b. The cylindrical portion of the cover main body 12a is formed with protrusions 12d having a shape overlapping the protrusions 10e for manual opening / closing of the cap 10 at four locations at equal intervals in the circumferential direction.

  The color of the cap cover 12 is black in accordance with the color of the upper revolving unit 2 around the cap cover 12 and black, thereby improving the aesthetic appearance.

  The cap cover 12 is formed with an opening 12b through which a part of the cap 10 is exposed and opened. However, the cap cover 12 does not have to be covered over the entire cap 10, and at least a hand operated in the opening / closing operation is required. It may be formed so as not to touch.

  As shown in FIG. 5, the cap cover 12 has a plurality of caps 12 detachably locked to the cap 10 at the periphery of the opening end of the opening 14 through which the cap 10 is inserted (in the embodiment shown in the figure). 4) engaging projections 16 projecting inward.

  The cap cover 12 may be color-coded for identification when used for a plurality of inlets of a construction machine.

  For the material of the cap cover 12, a synthetic resin having a low thermal conductivity and excellent heat resistance, wear resistance, toughness, chemical resistance, etc., such as nylon, or other appropriate material may be used. Convenient.

  Moreover, the shape of the cap cover 12 is formed so that opening and closing operation is possible integrally with the cap 10 to which the cap cover 12 is fitted. Therefore, when the shape of the cap is different from the cap 10 of the embodiment, the cap cover may be formed in accordance with the shape.

  The operation of the construction machine liquid inlet device 6 as described above will be described.

  According to the liquid inlet device 6, the cap cover 12 is fitted on the cap 10 attached to the inlet 8 so as to be freely opened and closed together with the cap 10 so that the cap 10 can be opened and closed. Therefore, even when the cap 10 is heated, it can be easily opened and closed through the cap cover 12 without directly touching the cap 10. Further, the cap 10 is not easily heated even when exposed to direct sunlight under the sun. Furthermore, the cap cover 12 also functions as a protective member that protects the cap 10 from being damaged by coming into contact with a foreign object or the like.

  The cap cover 12 includes a plurality of engaging protrusions 16 that detachably lock the cap cover 12 to the cap 10 at the periphery of the opening 14 through which the cap 10 is inserted when fitted into the cap 10. . Therefore, it is reliably and easily attached to the cap 10.

  By using a material having a low thermal conductivity, such as nylon, as the material of the cap cover 12, even if the cap 10 is heated, it is difficult for the heat to be transferred to the opening / closing operation, and the cap 10 is exposed to direct sunlight. Is difficult to heat.

  Moreover, since the color of the cap cover 12 is black according to the color of the upper revolving unit 2 around the cap cover 12 and black, the aesthetic appearance is improved. When the cap cover is attached to a plurality of locations, particularly the outer portion of the aircraft, it may be colored in a color suitable for each installation location.

  Further, when a plurality of inlets are provided, if the color of the cap cover 12 is changed according to the liquid to be injected, for example, the cooling water inlet is light blue, the fuel inlet is red, and the hydraulic oil inlet is yellow. Even when a plurality of inlets are installed, the inlets can be easily distinguished and identified without being confused.

The perspective view of the upper revolving body of the hydraulic excavator which is a typical construction machine provided with the fuel inlet apparatus which is the liquid inlet apparatus comprised according to this invention. FIG. 2 is an enlarged perspective view of a portion of the fuel inlet device indicated by an arrow A in FIG. FIG. 3 is an enlarged perspective view of a cap used in the fuel inlet device of FIG. 2. FIG. 3 is an enlarged perspective view of a cap cover used in the fuel inlet device of FIG. 2. (A) is the figure which looked at the cap cover of FIG. 4 from the opening part side in the arrow B direction. (B) is sectional drawing seen in the arrow CC direction shown to (a).

Explanation of symbols

6: Fuel inlet device (liquid inlet device)
8: Injection port 10: Cap 12: Cap cover 14: Opening 16: Engagement protrusion

Claims (6)

The liquid inlet provided in the construction machine includes a cap that can be freely opened and closed by manual operation, and a cap cover that is fitted to the cap so that the opening and closing operation can be performed together with the cap. A liquid inlet device for a construction machine. The cap cover includes an opening through which the cap is inserted, and a plurality of engaging protrusions formed in the opening to removably engage the cap cover with the cap. Liquid inlet device for construction machinery. The liquid inlet device for a construction machine according to claim 1, wherein the cap cover is provided at least at a part touched by a hand operated in the opening / closing operation. The liquid inlet apparatus for a construction machine according to any one of claims 1 to 3, wherein the cap cover is made of a synthetic resin.   The liquid inlet device for a construction machine according to any one of claims 1 to 4, wherein the cap cover is colored in the same color as a surrounding color of a portion where the cap cover is installed.   5. The liquid inlet device for a construction machine according to any one of claims 1 to 4, wherein a plurality of the inlets are provided in the construction machine, and cap covers fitted to the caps of the inlets are color-coded.

Images