JP4100464B2 - Non-slip mat for construction machinery - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a non-slip mat for a construction machine that is used by being fixed to a body of the construction machine.
[0002]
[Prior art]
In construction machines such as hydraulic excavators, periodic inspection and maintenance of the engine is indispensable. In general, the engine is mounted on the upper part of the construction machine. Therefore, when the engine is inspected and maintained, the worker climbs the machine body of the construction machine and performs necessary work. However, since the outer surface of the machine body is painted, the worker is easy to slip.
[0003]
In order to eliminate such problems, various anti-slip measures have been conventionally taken at necessary locations on the outer surface of the fuselage. For example, as an example of such measures, the present applicant prevents an anti-slip plate with a burring protrusion hole. It has already been proposed to use it as a mat (Japanese Patent Application No. 2000-80449).
If such a non-slip mat is fixed to the outer surface of the fuselage, the opening edge of the burring projection hole bites into the shoe sole of the worker, so that the operator's foot can be reliably prevented from slipping. Maintenance can be performed safely.
[0004]
[Problems to be solved by the invention]
However, in the case of the above-described anti-slip mat, mud, sand, gravel, etc. enter the burring protrusion hole from the shoe sole of the operator and the like, and these stay in the burring protrusion hole. For this reason, it is necessary to clean the inside of the burring protrusion hole.In this case, mud, sand, gravel, etc. are manually scraped from the burring protrusion hole, or the non-slip mat is removed from the outer surface of the aircraft. Cleaning is not easy.
[0005]
Also, if sand or gravel is caught between the inner edge of the burring protrusion and the outer surface of the fuselage, every time an operator gets on the anti-slip mat, the sand and gravel will collapse, resulting in an unpleasant crushing sound. appear.
The present invention has been made based on the above-mentioned circumstances, and the object of the present invention is easy to clean even if it has a burring protrusion hole, and can prevent generation of unpleasant crushing noise. It is to provide a non-slip mat for construction machinery.
[0006]
[Means for Solving the Problems]
A non-slip mat for a construction machine according to claim 1 of the present invention that achieves the above-mentioned object is a plate-like mat body fixed to the outer surface of the machine body of the construction machine, and burring protrusions distributed integrally on the upper surface of the mat body. A hole and a plurality of protrusions that are integrally provided on the lower surface of the mat body and secure a predetermined gap between the outer surface of the airframe and the lower surface of the mat body, and these protrusions are uniformly formed on the lower surface of the mat body. The embossed protrusions are smaller in diameter than the burring protrusion holes.
[0007]
According to the anti-slip mat of claim 1 described above, even if mud, sand, gravel or the like enters the burring projection hole, the high-pressure cleaning liquid or air is injected into the gap between the mat body and the outer surface of the machine body. This makes it possible to discharge mud, sand, gravel, etc.
Also, if there is a gap between the mat body and the outer surface of the fuselage, sand and gravel will not be caught between the outer surface of the fuselage and the inner end of the burring projection hole, so that the operator can slip. Even if the stop mat is stepped on, there is no crushing sound of sand or gravel.
[0008]
Further, according to the slip mat of claim 1 of the present invention, the convex portion is uniformly distributed on the lower surface of the mat body, so it has a small diameter of the embossed protrusion than the burring protrusion hole, thus The embossed projections increase the rigidity of the mat body and secure a discharge passage for mud, sand, gravel and the like between the mat body and the outer surface of the machine body.
[0009]
In the anti-slip mat according to claim 2 of the present invention , each convex portion is disposed at a lattice point of the lattice, and a burring protruding hole is disposed at the center of the stitch formed by the lattice . Such an arrangement of the convex portions disperses the load applied to the burring protrusion hole well in the airframe.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows a hydraulic excavator 2 as a construction machine. The excavator 2 includes a revolving machine body 6 on a crawler type traveling body 4, and the revolving machine body 6 includes a front working mechanism 8 including a boom, an arm, a bucket, and the like, a cab 10 for operating the front working mechanism 8, and a utility room. 12, an engine room 14 containing an engine (not shown), and a counterweight 16.
[0011]
In order to inspect and maintain the engine (not shown), the swing machine body 6 is provided with a step (not shown) for an operator to access the engine room 14, and the engine room 14 is provided as an outer surface of the swing machine body 6. A plurality of anti-slip mats 18 are fixed to the upper surface of the adjacent utility room 12. In FIG. 1, reference numeral 19 denotes an anti-slip tape attached to the upper surface of the counterweight 16.
[0012]
Each anti-slip mat 18 includes a mat body 20 made of a thin rectangular steel plate (for example, 1.6 mm in thickness), and a large number of burring projection holes 22 are located at lattice points of the lattice on the upper surface of the mat body 20 as shown in FIG. It is distributed in such a grid arrangement. More specifically, the burring protrusion hole 22 protrudes from the upper surface of the mat body 20, and its inner diameter D _I , outer diameter D _O and height H (see FIG. 3) are 24 mm, 34 mm, and 4 mm, respectively, and The same pitch P (for example, 60 mm) is secured between the burring protrusion holes 20 adjacent in the lateral direction.
[0013]
As apparent from FIG. 2, bolt insertion holes 24 are formed in place of the burring protrusion holes 22 at the four corners and the center of both side portions of the mat body 20, and fixing bolts (not shown) are passed through these bolt insertion holes 24. The anti-slip mat 18 can be fixed to the upper surface of the utility room 12 by screwing it into a screw hole (not shown) on the upper surface of the utility room 12.
[0014]
Further, the upper surface of the mat body 20 is disposed in which is distributed in a circular embossed hole 26 is uniform, these embossed holes 26 also lattice arrangement. More specifically, these embossed holes 26 are arranged so that the individual burring protruding holes 22 are located in the center of the mesh defined by the lattice arrangement. Therefore, the interval between the emboss holes 26 adjacent in the vertical and horizontal directions, that is, the pitch thereof is the same as the pitch P of the burring protrusion holes 22.
[0015]
As shown in FIGS. 3 and 4, the emboss hole 26 described above forms a circular emboss protrusion 28 as a convex portion on the lower surface of the mat body 20. The emboss projection 28 has a smaller diameter than the burring projection hole 22, its proximal end outer diameter d is, for example, 10 mm, and its height h is, for example, 1.6 to 1.8 mm. Further, the emboss projection 28 has a truncated cone shape whose outer diameter is smaller than the outer diameter d of the base end, and the inclination angle α of the peripheral surface with respect to the mat body 20 is 45 °, for example. And the outer periphery of the front end surface in the embossing protrusion 28 is formed in the circular arc surface of a predetermined curvature radius. 3 and 4, reference numeral 30 indicates the upper wall of the utility room 12.
[0016]
As described above, when the non-slip mat 18 is fixed to the upper surface of the utility room 12, as shown in FIGS. 3 and 4, the emboss projections 28 are in close contact with the upper surface of the utility room 12, and the mat body 20 and the utility room 12 are brought together. A gap G corresponding to the height h of the embossing projection 28 is secured between the upper surface of the embossing protrusion 28 and the upper surface of the embossing protrusion 28. That is, the burring protrusion hole 22 of the mat body 20 is held in a state of floating from the upper surface of the utility room 12.
[0017]
Therefore, even if mud, sand, gravel, etc. enter the burring projection hole 22 from the sole, as shown in FIG. By injecting high-pressure washing water or air in between, mud, sand, gravel, etc. in the burring projection hole 22 can be easily discharged from the outer peripheral edge of the anti-slip mat 18 through the vertical and horizontal discharge passages between the embossing protrusions 28. The cleaning work becomes easy.
[0018]
Further, since sand or gravel does not bite between the inner back end of the burring projection hole 22 and the upper surface of the utility room 12, even if the non-slip mat 18 is stepped on the shoe sole of the operator, The gravel is not crushed and unpleasant crushing noise can be reliably prevented. In addition, since the outer peripheral edge of the tip surface of the embossing projection 28 is rounded, the embossing projection 28 does not have an edge that bites into the upper surface of the utility room 12 even if an operator gets on the anti-slip mat 18. no, not even that would peel the paint.
[0019]
Further, since the small-diameter embossing protrusions 28 increase the rigidity of the mat body 20, a thin steel plate can be used for the mat body 20, and it can be easily obtained by embossing the mat body 20. Further, since the emboss projections 28 are distributed in a lattice arrangement in which the burring projection holes 22 are positioned at the center of the stitches, the load applied to the burring projection holes 22 can be well dispersed in the revolving machine body 6.
[0020]
Needless to say, the burring projection hole 22 is effective as a slipper against the shoe sole of the operator.
The present invention is not limited to the above-described embodiments, and various modifications are possible.
The anti-slip mat 18 of the present invention can be used in place of the anti-slip tape 19 on the upper surface of the counterweight 16 or may be fixed to the upper surface of the above-described step. In short, it is only necessary to fix the outer surface of the swivel body 6 to a portion of the outer surface where the operator may walk, and the installation location is not specified.
[0021]
Further, the arrangement of the burring protruding holes 22 and the embossing protrusions 28 is not limited to the above-described lattice arrangement .
[0022]
【The invention's effect】
As described above, according to the non-slip mat for construction machinery of the present invention according to claim 1, since the burring projection hole is lifted from the outer surface of the machine body, mud, sand, gravel, etc. are present in the burring projection hole. Even if they enter, they can be easily discharged through the gap secured between the outer surface of the machine body and the mat body, and the cleaning can be performed easily.
[0023]
In addition, since sand and gravel do not bite between the inner back end of the burring projection hole and the outer surface of the aircraft, even if an operator gets on the non-slip mat, it is uncomfortable due to crushing of sand or gravel. No crushing sound is generated.
Furthermore, according to the non-slip mat for construction machinery of the present invention, the convex portion on the lower surface of the mat body is an embossed projection, so that the rigidity of the mat body is increased, and the convex portion can be easily formed only by embossing the mat body. Obtainable.
[0024]
According to the non-slip mat for construction machinery of the present invention according to claim 2 , the convex portions are arranged in a lattice arrangement in which the bar link projecting holes are positioned at the center of the stitches, so that the load applied to the burring projecting holes is It can be dispersed well in the aircraft.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a part of a hydraulic excavator as a construction machine.
FIG. 2 is a plan view of an anti-slip mat.
FIG. 3 is a partial cross-sectional view of a non-slip mat including a burring protrusion hole.
FIG. 4 is a partial cross-sectional view of an anti-slip mat including an emboss protrusion.
[Explanation of symbols]
2 Hydraulic excavator (construction machine)
6 Revolving aircraft (airframe)
12 Utility room (aircraft exterior)
14 Engine room 18 Non-slip mat 20 Mat body 22 Burring protruding hole 28 Embossed protrusion

Claims (2)

A plate-like mat body fixed to the outer surface of the machine body of the construction machine;
Burring protrusion holes distributed integrally on the upper surface of the mat body;
A plurality of convex portions that are integrally provided on the lower surface of the mat body and secure a predetermined gap between the outer surface of the machine body and the lower surface of the mat body ;
The non- slip mat for construction machinery, wherein the convex portions are uniformly distributed on the lower surface of the mat body and are embossed projections having a diameter smaller than that of the burring projection hole . The anti-slip mat for a construction machine according to claim 1, wherein the convex portion is disposed at a lattice point of the lattice, and the burring protrusion hole is disposed at a center of a stitch formed by the lattice .

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