JP2007137274A - Dump truck laying synthetic resin plate on load carrying platform - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dump truck devised to prevent marring of a bottom surface of a load carrying platform of the dump truck having the aluminum- or Sweden steel-made load carrying platform by sediment, etc. and not to leave the sediment, etc. on the load carrying platform in unloading the sediment, etc. <P>SOLUTION: This dump truck has the aluminum- or Sweden steel-made load carrying platform and fixes a synthetic resin plate divided into a plurality of pieces on the load carrying platform by providing a specified clearance, and the synthetic resin plate is divided into a plurality of pieces in the longitudinal direction of the load carrying platform and a plurality of these divided synthetic resin plates are respectively arranged in stages and fixed on the load carrying platform. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a dump truck having a loading platform made of aluminum or Swedish steel, and more particularly to a dump truck having a synthetic resin plate laid on almost the entire bottom surface of the loading platform.

  Conventionally, dump trucks are made of steel and have a weight of about 10500 kg when empty. Exhaust gas pollution caused by such heavy vehicles traveling, pollution caused by tire wear, road damage, etc. are social problems. It was.

  Therefore, in order to reduce the number of travels by reducing the weight of the vehicle body and increasing the loading capacity at one time, and to prevent air pollution by improving fuel consumption by reducing the weight of the vehicle when empty, for example, Patent Document As shown in FIG. 1, a dump truck having an aluminum loading platform has been developed.

  The aluminum dump truck has a body weight of about 8500 kg, which is about 2000 kg lighter than that of conventional steel, and it is reported that the fuel consumption during empty driving is improved by about 20%.

However, when the loading platform is made of aluminum, it becomes lighter, but the metal is softer than steel, so when loading loads such as earth and sand, the bottom of the loading platform becomes depressed due to the impact of falling earth or sand, or The bottom surface of the loading platform may be damaged due to sliding of earth and sand when it is lowered. Furthermore, as a result of the corrosion from the scratches or the entry of earth and sand into the depressions and scratches, the friction between the earth and sand when unloading the earth and sand and the bottom of the loading platform increases, and as a result Etc., there is a disadvantage that a part of them remains on the carrier.
JP 2003-341212 A

  The present invention has been made in view of the above-described circumstances, and the object of the present invention is to prevent the bottom surface of a dump truck loading platform having an aluminum loading platform from being damaged by sediment or the like. The object is to provide a dump truck in which earth and sand etc. are not left on the loading platform when unloading.

  The object of the present invention is a dump truck having a loading platform made of aluminum or Swedish steel, wherein a synthetic resin plate divided into a plurality of sheets is fixed to the loading platform on the entire bottom surface of the loading platform, A dump truck characterized in that a synthetic resin plate is divided into a plurality of sheets in the long side direction of the loading platform, and the plurality of divided synthetic resin plates are arranged in a step shape and fixed to the loading platform. Is achieved by providing

  Moreover, the said objective of this invention is achieved effectively by providing the said synthetic resin board by the dump truck characterized by the back side being formed in the shape of a slope.

  The object of the present invention is a dump truck having a loading platform made of aluminum or Swedish steel, wherein a synthetic resin plate divided into a plurality of sheets is fixed to the loading platform on the entire bottom surface of the loading platform, The synthetic resin plate is divided into a plurality of sheets in the long side direction of the loading platform, and the divided plurality of synthetic resin plates are arranged in a zigzag shape in the longitudinal sectional view of the loading platform in the upper and lower stages 2 This is accomplished by providing a dump truck characterized by being placed in steps and secured to the loading platform.

  Moreover, the said objective of this invention is achieved effectively by providing the dump truck characterized by the long side of the said synthetic resin board arrange | positioned at the said upper stage being formed in the shape of a slope.

  Moreover, the said objective of this invention is that when the said synthetic resin board arrange | positioned in the forefront of the said loading platform is arrange | positioned in the said upper stage, the said synthetic resin board is formed only in the back side in the shape of a slope. This is achieved more effectively by providing a dump truck characterized by:

  Furthermore, the object of the present invention is more effective by providing a dump truck in which the synthetic resin plate is divided into four in the long side direction of the cargo bed and fixed to the cargo bed. Achieved.

  According to the dump truck according to the present invention, a synthetic resin plate having high wear resistance and high impact resistance is divided into a plurality of steps on the bottom surface of the dump truck bed having an aluminum or Swedish steel bed so as to be stepped. In addition, the synthetic resin plate can be easily manufactured and laid easily by arranging and laying in two stages of the upper stage and the lower stage so as to form a zigzag shape in a sectional view in the longitudinal direction of the loading platform. Further, it is possible to prevent the bottom surface of the loading platform from being damaged due to an impact during loading of earth and sand, and the surface of the synthetic resin plate is slippery, thereby preventing the earth and sand from remaining at the time of unloading.

  Hereinafter, the dump truck according to the present invention will be described in detail with reference to the drawings. The present invention is not limited to the following embodiments, and it goes without saying that the design can be changed as appropriate without departing from the scope of the claims.

  FIG. 1 shows an external view of a general dump truck. FIG. 1 (A) shows a state when the loading platform 1 is horizontal and a load such as earth and sand is loaded or traveled, and FIG. 1 (B) shows a state when the cargo is unloaded. As shown in (B), when the front of the loading platform 1 rises, the earth and sand loaded on the loading platform 1 slides down from the rear.

  In the dump truck according to the present invention, as shown in the top view of the loading platform 1 in FIG. 2 and the II-II cross-sectional view of FIG. 2 in FIG. 3, substantially the entire bottom surface 2 of the loading platform 1 made of aluminum or Swedish steel. A plurality of synthetic resin plates 3 are laid, and the front side of each synthetic resin plate 3 is fixed to the loading platform 1 with a fixing member 4. The reason why the front side of each synthetic resin plate 3 is fixed is to prevent the synthetic resin plate 3 from sliding down together with earth and sand when unloading. As a result, it is possible to prevent damage to the bottom surface 2 of the loading platform 1 due to an impact during loading of earth and sand, and the surface of the synthetic resin plate 3 is slippery, so that the remaining of earth and sand when unloading can be prevented. There is.

  As shown in FIGS. 2 and 3, the synthetic resin plate 3 used in the dump truck according to the present invention is divided into four in the long side direction of the loading platform 1.

  The bottom surface 2 of the loading platform 1 generally has a short side (horizontal) of about 2300 mm and a long side (vertical) of about 5000 mm, and in order to obtain sufficient strength, a long piece of polyethylene having a thickness of about 10 mm. When a resin plate is used as a synthetic resin plate, the weight is about 104 kg, which causes problems in manufacturing and transportation. Therefore, the dump truck according to the present invention is divided into four in the long side direction of the loading platform 1. Thereby, since the weight of one synthetic resin board 3 is about 30 kg, it is easy to manufacture and has advantages such as easy transportation when installed on the loading platform 1.

  Further, in the dump truck according to the present invention, as shown in FIG. 3, the four synthetic resin plates 3 are arranged in a stepped shape on the front side and fixed to the bottom surface 2 of the loading platform 1. That is, if the four synthetic resin plates 3 are 3A, 3B, 3C, and 3D in order from the front side of the loading platform 1, the lower surface on the rear side of the synthetic resin plate 3A is the upper surface on the front side of the synthetic resin plate 3B. The lower surface on the rear side of the synthetic resin plate 3B is in contact with the upper surface on the front side of the synthetic resin plate 3C, and the lower surface on the rear side of the synthetic resin plate 3C is on the front side of the synthetic resin plate 3D. Place and fix so that it touches the top surface of. As described above, the load such as earth and sand loaded on the loading platform 1 is lifted in front of the loading platform 1 and tilted to cause the loading platform 1 to be slid down. Remaining on the loading platform 1 can be prevented.

  Here, as the synthetic resin plate 3, a polyethylene resin plate or a polypropylene resin plate can be used. In particular, polyethylene resin is light, excellent in wear resistance, impact resistance, and corrosion resistance, and is a stable material that can withstand temperature changes in the range of minus 40 degrees to plus 110 degrees. Accordingly, it has an advantage that it can withstand a drop impact of earth and sand and the surface is easy to slide, so that the earth and sand can be unloaded smoothly.

  Polypropylene resin also has similar properties and is a material suitable for use.

  Each synthetic resin plate 3 may be bonded and joined together in the order described above while laying on the loading platform 1, but the synthetic resin plate 3 is manufactured and transported in a state of being divided into four, and four synthetic resins are used. The plate 3 may be laid after being bonded and joined together as described above. As the bonding method, a method using an adhesive or a method using heat fusion can be adopted. However, since a commercially available adhesive for polyethylene resin is quick-drying, it is like the synthetic resin plate 3 according to the present invention. It is not suitable for bonding long objects. Thermal fusion can be performed with a 100V power source using commercially available nichrome wire and transformer.

  As described above, in this embodiment, the synthetic resin plate 3 is divided into four parts, but in addition to this, it can be appropriately changed according to the purpose of use, needs, etc., such as three parts, five parts, etc., and the same effect can be obtained. . Further, the bonding or engagement of the synthetic resin plate 3 can be performed using an adhesive or using a screw or the like.

  Although the dump truck according to the present invention has been described based on one embodiment, the configuration of the present invention can be changed as follows.

  FIG. 4 is a top view showing the loading platform 1 of the dump truck according to the second embodiment of the present invention, and FIG. 5 is a sectional view taken along the line IV-IV in FIG. In the dump truck according to the present embodiment, the configuration of the synthetic resin plate 3 and other configurations except for the arrangement are substantially the same as those of the dump truck described above. The description is omitted.

  As shown in FIGS. 4 and 5, in the dump truck according to the present embodiment, the synthetic resin plate 3 divided into four in the long side direction of the loading platform 1 is staggered in a sectional view in the longitudinal direction of the loading platform 1. The upper stage 5 and the lower stage 6 are arranged in two stages, and are fixed to the bottom surface 2 of the loading platform 1 using a fixing member 4.

  That is, when the synthetic resin plate 3 is 3A, 3B, 3C, 3D in order from the front side of the loading platform 1, the synthetic resin plates 3B and 3D constitute the upper stage 5, and the synthetic resin plates 3A and 3C constitute the lower stage 6. More specifically, the upper surface on the rear side of the synthetic resin plate 3A is in contact with the lower surface on the front side of the synthetic resin plate 3B, and the lower surface on the rear side of the synthetic resin plate 3B is in contact with the synthetic resin plate 3C. The upper surface on the front side of the synthetic resin plate 3C is arranged and fixed so that the upper surface on the rear side of the synthetic resin plate 3C is in contact with the lower surface on the front side of the synthetic resin plate 3D.

  At this time, as shown in FIG. 5, it is preferable that both long sides of the synthetic resin plates 3B and 3D constituting the upper stage 5 (that is, the front and rear sides of the synthetic resin plates 3B and 3D) are formed in a slope shape. . That is, as described above, the load such as earth and sand loaded on the loading platform 1 is slid down by raising the front of the loading platform 1 and tilting the loading platform 1, and thus the synthetic resin plate constituting the upper stage 5. By forming both the long sides of 3B and 3D in a slope shape, the earth and sand can be more easily slipped off, and the earth and sand can be prevented from remaining on the loading platform 1.

  Further, the configuration of the present invention can be changed as follows.

  FIG. 6 is a top view showing the loading platform 1 of the dump truck according to the third embodiment of the present invention, and FIG. 7 is a sectional view taken along line VI-VI in FIG. In the dump truck according to the present embodiment, the configuration of the synthetic resin plate 3 and other configurations except for the arrangement are substantially the same as those of the dump truck described above. The description is omitted.

  As shown in FIGS. 6 and 7, in the dump truck according to the present embodiment, the synthetic resin plate 3 divided into four in the long side direction of the loading platform 1 is staggered in a cross-sectional view in the longitudinal direction of the loading platform 1. The upper stage 5 and the lower stage 6 are arranged in two stages, and are fixed to the bottom surface 2 of the loading platform 1 using a fixing member 4. The second embodiment is different from the second embodiment described above in that the synthetic resin plates 3A and 3C constitute the upper stage 5 and the synthetic resin plates 3B and 3D constitute the lower stage 6.

  That is, the lower surface on the rear side of the synthetic resin plate 3A is in contact with the upper surface on the front side of the synthetic resin plate 3B, and the upper surface on the rear side of the synthetic resin plate 3B is in contact with the lower surface on the front side of the synthetic resin plate 3C. Furthermore, the synthetic resin plate 3C is arranged and fixed so that the lower surface on the rear side of the synthetic resin plate 3C is in contact with the upper surface on the front side of the synthetic resin plate 3D.

  At this time, as shown in FIG. 7, it is preferable to form the long side on the back side of the synthetic resin plate 3A and both long sides of the synthetic resin plate 3C (that is, the front-rear side) in a slope shape. That is, as described above, the load such as earth and sand loaded on the loading platform is slid down by raising the front of the loading platform 1 and inclining the loading platform 1. However, the synthetic resin plates 3A and 3C constituting the upper stage 5 are removed. By forming the slope like this, the earth and sand can be easily slipped off, and the earth and sand can be prevented from remaining on the loading platform 1, and the same effects as those of the first and second embodiments described above can be obtained. it can.

It is an external view of a general dump truck. It is a top view which shows the loading platform of the dump truck which laid the synthetic resin board into 4 parts on the whole surface of the bottom face. It is II-II sectional drawing of FIG. It is a top view which shows another form of the loading platform of the dump truck which laid the synthetic resin board into 4 parts on the whole surface of the bottom face. It is IV-IV sectional drawing of FIG. It is a top view which shows another form of the loading platform of the dump truck which laid down the synthetic resin board into 4 parts on the whole surface of the bottom face. It is VI-VI- sectional drawing of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Loading platform 2 Bottom surface 3, 3A-3D Synthetic resin board 4 Fixing member

Claims (6)

A dump truck having a loading platform made of aluminum or Swedish steel, wherein the synthetic resin plate divided into a plurality of sheets is fixed to the loading platform on the entire bottom surface of the loading platform, wherein the synthetic resin plate is the loading platform. A dump truck characterized in that it is divided into a plurality of sheets in the long side direction, and the plurality of divided synthetic resin plates are arranged in a staircase shape and fixed to a cargo bed. The dump truck according to claim 1, wherein the synthetic resin plate is formed in a slope shape on the rear side. A dump truck having a loading platform made of aluminum or Swedish steel, wherein the synthetic resin plate divided into a plurality of sheets is fixed to the loading platform on the entire bottom surface of the loading platform, wherein the synthetic resin plate is the loading platform. Are divided into a plurality of sheets in the long side direction, and the plurality of divided synthetic resin plates are arranged in two stages of an upper stage and a lower stage so as to have a zigzag shape in a cross-sectional view in the longitudinal direction of the cargo bed. A dump truck characterized by being fixed. 4. The dump truck according to claim 3, wherein a long side of the synthetic resin plate disposed in the upper stage is formed in a slope shape. 5. The said synthetic resin board when the said synthetic resin board arrange | positioned in the forefront of the said loading platform is arrange | positioned in the said upper stage, The back side is only formed in the slope shape, The Claim 3 or Claim characterized by the above-mentioned. Item 5. The dump truck according to Item 4. The dump truck according to any one of claims 1 to 5, wherein the synthetic resin plate is divided into four in the long side direction of the loading platform and fixed to the loading platform.

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