JP2006097315A - Floor plate and floor structure of construction machinery - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve drainability of water etc. and air permeability between a floor plate and a floor mat. <P>SOLUTION: A plate material serving as a raw material for the floor plate 11 is press-worked in such a corrugated sheet-shape that protrusions and recesses are continuously provided, so that many recessed grooves 12 etc. for the discharge of water etc. and ventilation can be provided in parallel at intervals in the state of continuing almost throughout the length from an end on the other side of the getting-on-and-off side of each of the recessed grooves 12 etc. to an end on the getting-on-and-off side thereof. Additionally, bottom surfaces of the recessed grooves 12 etc. are inclined in such a manner that a leading end is lowered toward the end on the getting-on-and-off side, and exhaust ports 12a etc. are provided at the leading end of that inclination. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a floor plate that forms a driver's seat floor and a floor structure that includes the plate and a floor mat in a construction machine such as a hydraulic excavator.

  The conventional technology will be described by taking a small hydraulic excavator called a mini excavator as an example.

  As shown in FIG. 7, the hydraulic excavator is mounted on the crawler-type lower traveling body 1, the upper revolving body 2 that is pivotably mounted on the lower traveling body 1 around the vertical axis, and the upper revolving body 2. And a work attachment A provided with a boom 3, an arm 4, a bucket 5, and the like. 6 is a canopy.

  In addition to the driver's seat 8 on the driver's seat floor (hereinafter simply referred to as the floor) 7, the upper swing body 2 is provided with operation equipment (not shown).

  As shown in FIG. 8, the floor 7 is configured as a double structure in which a rubber floor mat 10 is laid on a floor plate 9 made of a metal plate (see Patent Documents 1 and 2).

The floor plate 9 and the floor mat 10 are actually shaped to match the floor shape, and the floor plate 9 may be provided with a maintenance opening and a cover for covering it. And for simplification of description, both are shown as a simple rectangular single plate (this is the same for the embodiments of the present invention described later). Further, the surface of the floor mat 10 is subjected to anti-slip uneven processing.
JP 2004-17946 A JP 2004-122901 A

  On the floor 7 having such a double structure, washing water, rainwater, mud dropped from shoes, etc. enter between the floor plate 9 and the floor mat 10, and this is on the floor plate 9, particularly at the attachment portion of the maintenance cover. Easy to accumulate.

  Moreover, since the drainage and air permeability between the plate and mat are poor, the entire floor plate 9 is rusted, or rust or mud is stuck to the mounting part of the plate or the maintenance cover, causing the fixing bolts to be fixed. There was a problem.

  This problem is not limited to an open excavator that does not have a cabin such as a mini excavator, but also to an excavator having a cabin.

  Patent Documents 1 and 2 disclose a technique for devising the shape of the floor mat 10 to suppress the entry of water or the like under the mat. However, since sealing is impossible, Intrusion and stagnation were unavoidable, and the above problems occurred.

  Therefore, the present invention provides a floor plate and a floor structure for a construction machine that can improve the drainage and breathability of water and the like between the floor plate and the floor mat.

  The invention according to claim 1 (floor plate) is a floor plate of a construction machine in which a floor mat is laid on the upper surface to form a driver's seat floor, and a large number for discharging water and venting on the upper surface in contact with the floor mat. The groove is provided.

  According to a second aspect of the present invention, in the configuration of the first aspect, a plate material that is a material of the floor plate is pressed into a corrugated plate shape having continuous irregularities, whereby a large number of concave grooves are spaced in parallel, and Each of the concave grooves is provided so as to be continuous over almost the entire length from one end side to the other end side.

  According to a third aspect of the present invention, in the configuration of the second aspect, the bottom surface of each groove is inclined downward toward the one end side, and a discharge port is provided at the tip of the inclination.

  According to a fourth aspect of the present invention, in the configuration of the third aspect, the bottom surface of each concave groove is inclined downward toward the board end on the boarding / alighting side with respect to the driver's seat, and the front end side of the inclination is opened to discharge the outlet. Is provided.

  The invention (floor structure) of claim 5 is the floor structure of a construction machine in which a floor mat is laid on the upper surface of the floor plate to form a driver's seat floor. By providing a number of concave grooves parallel to each other on the upper surface of the floor and in a state of being continuous over almost the entire length from one end side to the other end side of each concave groove, between the floor plate and the floor mat A space for discharging water or the like and for venting is formed.

  According to the floor plate and the floor structure of the present invention, water or the like is provided between the floor plate and the floor mat by the concave groove (the concave groove of the floor plate in claims 1 to 4 and the concave groove of at least the floor plate in claim 5). Since the space for discharging and venting is formed, it is possible to enhance the discharge and breathability under the mat.

  For this reason, even if washing water, rainwater or mud in the case of an open type machine enters under the mat, the water or the like can be discharged smoothly through the space, and the underside of the mat can be quickly dried.

  As a result, it is possible to prevent rusting of the floor plate and fixing of the mounting bolts of the maintenance cover.

  In this case, according to the inventions of claims 2 to 4, the floor plate is formed into a corrugated plate shape in which a large number of concave grooves are arranged in parallel at intervals by pressing the plate material. The rigidity and strength can be dramatically increased.

  Thereby, weight reduction and cost reduction can be achieved by reducing the plate thickness or omitting the reinforcing material.

  Further, since the concave grooves can be provided distributed over the entire plate, and provided over almost the entire length, water and mud can be collected and discharged in a wide range.

  In particular, according to the third and fourth aspects of the present invention, water and mud can be reliably and promptly discharged from under the mat to the outside by the inclination of the bottom surface of the groove and the discharge port at the tip of the inclination.

  In this case, according to the invention of claim 4, since water and mud can be discharged directly to the boarding / exiting side, that is, to the outside, the equipment installed under the floor, for example, when it is configured to be discharged under the floor from the discharge hole There is no risk of adverse effects.

1st Embodiment (refer FIGS. 1-4)
The floor plate 11 according to the first embodiment is formed by pressing a metal plate material, which is a material, into a corrugated plate having continuous irregularities.

  By this processing, a large number of concave grooves 12 having a U-shaped cross-section are formed on the floor plate 11 in parallel with an interval, and from the end on the opposite side (left side in FIG. 4) to the driver's seat on the boarding / exiting side. It is provided in a linearly continuous state over almost the entire length up to the end.

  In this case, each concave groove 12 is provided in a state where the end on the opposite side to the boarding / alighting side is closed and the end 12a on the boarding / alighting side is opened so as to serve as a water or mud discharge port.

  Further, as shown in FIG. 4, each concave groove 12 is formed so that its bottom surface is inclined downward toward the open end (discharge port) 12a.

  A floor mat (same as the floor mat 10 shown in FIG. 8) 13 is laid on the floor plate 11 to form a floor 14.

  With this configuration, a large number of tunnel-shaped spaces S for discharging and venting water are formed between the floor plate 11 and the floor mat 13, so that in the case of washing water or an open type machine Even if rainwater or mud invades under the floor mat, this space S ... facilitates quick discharge and drying.

  Specifically, the invading water and mud flow into the spaces S, flow into the boarding / alighting side, and are quickly discharged to the outside through the discharge ports 12a. In addition, since the air flow under the mat is improved by the space S, moisture is quickly dried.

  The draining action and the drying action of water and the like can prevent the floor plate 11 from being rusted and the maintenance cover mounting bolts from being fixed.

  In this case, since the floor plate 11 is formed into a corrugated plate by pressing a plate material, the concave groove 12 is formed, and at the same time, the rigidity and strength of the floor plate 11 are compared with a simple flat plate due to the unevenness. It can be significantly improved.

  Accordingly, the thickness of the plate 11 can be reduced, or the reinforcing material that has been necessary in the prior art can be omitted, so that significant weight reduction and cost reduction can be realized.

  Moreover, since the concave grooves 12 (space S ...) are distributed over the entire floor and provided over almost the entire length by corrugated plate processing, water and mud can be collected and discharged in a wide range.

  Moreover, since the bottom surfaces of the concave grooves 12 are inclined downward toward the boarding / exiting discharge ports 12a, water and mud can be reliably and quickly discharged to the outside without accumulating in the spaces S. it can.

  In addition, since water and mud can be discharged directly to the boarding / exiting side (external), a device is provided below the floor as in the case where a drain hole is provided in the middle of the groove 12 and discharged from here to the floor. There is no risk of adverse effects.

  The floor plate 11 or the maintenance cover mounting bolt is preferably provided on the convex surface portion so as to avoid the concave groove 12 so that water or the like does not collect in the vicinity thereof. 1 and 2, reference numeral 15 denotes bolt holes provided in the floor plate 11 for this purpose.

Second and Third Embodiments Only differences from the first embodiment will be described.

  In the second embodiment shown in FIG. 5, the concave grooves 12 of the floor plate 11 are formed in a semicircular cross section instead of the U cross section of the first embodiment by pressing the plate material.

  Also according to this embodiment, basically the same effect as the first embodiment can be obtained. Further, since the concave grooves 12 have a semicircular cross section, mud easily flows with water, and sticking can be suppressed.

  In the third embodiment shown in FIG. 6, the floor plate 11 is provided with concave grooves 12 (here, a case of a U-shaped cross section is illustrated), while corresponding to the concave grooves 12 on the lower surface of the floor mat 13. A concave groove 16 is also formed in the portion, and a space S for draining water and the like and a ventilation space S are formed between the floor plate 11 and the mat 13 by both the concave grooves 12.

  According to this floor structure, the space S can be widened, and the exhaustability and air permeability can be further improved. Alternatively, when the depth of the concave grooves 16 of the floor plate 11 cannot be sufficiently obtained, the shortage can be covered with the concave grooves 16 on the mat side.

  Incidentally, the concave grooves 12 of the floor plate 11 are preferably formed by pressing as in the above-described embodiment. For example, other forming means may be used.

  Also, the bottom surface of the concave grooves 12... May be inclined from both sides toward the concave groove intermediate portion, and a drain hole may be provided in the intermediate portion, whereby water or the like may be discharged from the floor intermediate portion to the outside.

1 is a perspective view of a floor plate and a floor mat showing a first embodiment of the present invention. It is a partially cutaway perspective view of a state where a floor mat is laid on the floor plate. It is the III-III line expanded sectional view of FIG. It is the IV-IV line expanded sectional view of FIG. FIG. 4 is a view corresponding to FIG. 3 showing a second embodiment of the present invention. FIG. 6 is a view corresponding to FIG. 3 showing a third embodiment of the present invention. It is a schematic side view of a hydraulic excavator. It is a partially cutaway perspective view showing a conventional floor structure.

Explanation of symbols

11 Floor plate 12 Groove 12a Discharge port 13 Floor mat 14 Floor 16 Groove in floor mat

Claims (5)

  In a floor plate of a construction machine in which a floor mat is laid on the upper surface to form a driver's seat floor, the upper surface in contact with the floor mat is provided with a number of concave grooves for discharging water and the like and for venting. Construction machine floor plate.   The floor plate of the construction machine according to claim 1, wherein the plate material as the material of the floor plate is pressed into a corrugated plate shape having continuous irregularities, whereby a large number of concave grooves are spaced in parallel, and each A floor plate for a construction machine, characterized in that the concave groove is provided so as to extend substantially over the entire length from one end side to the other end side.   3. The floor plate of a construction machine according to claim 2, wherein the bottom surface of each groove is inclined downward toward the one end side, and a discharge port is provided at the tip of the inclination. .   4. The floor plate of the construction machine according to claim 3, wherein the bottom surface of each groove is inclined downward toward the board end on the boarding / exiting side with respect to the driver's seat, and a discharge port is provided by opening the front end side of the inclination. A floor plate for construction machinery.   In a floor structure of a construction machine in which a floor mat is laid on the upper surface of the floor plate to form a driver's seat floor, a large number of concave grooves are spaced at least on the upper surface of the floor plate among the surfaces where the floor plate and the floor mat are in contact with each other. And a space for discharging water and the like between the floor plate and the floor mat by providing each concave groove in a state of being continuous over almost the entire length from one end side to the other end side. Construction machine floor structure characterized by forming.

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