Road surface structure for transporting heavy loads

Abstract

To provide a road surface structure for transporting heavy loads, which does not require laying an iron plate on the road surface and enables rollers carrying heavy loads to run smoothly directly on the upper surface of blocks. [Solution] A road surface structure 10 for transporting heavy loads is formed by stacking rectangular blocks 11, with adjacent blocks joined together with bolts and nuts, and the top surface of the uppermost block 11a, which is located at the topmost level of the road surface structure, is flat and has no irregularities.

Description

[Technical field]

[0001] This invention relates to a road surface structure for transporting heavy objects, constructed for the transportation of heavy machinery and the like. [Background technology]

[0002] When heavy machinery and other heavy objects need to be transported to a factory, the factory may be located above ground level and have steps. In such cases, the factory is designed to accommodate heavy objects, so it has a strong foundation built in advance, but the ground around the factory may be loose. In such cases, it is necessary to build a road structure that can withstand heavy objects on the route to the factory. In order to build a flat and strong road structure, blocks and sleepers are generally stacked, thick steel plates are laid on top of them, and heavy objects are transported on top of the steel plates using electric winches and electric rollers.

[0003] It is conceivable to use iron or aluminum blocks (Patent Document 1) as the blocks that form the road surface structure, but iron has the problem of rusting, so if it is to be used as a temporary road surface structure, aluminum blocks, which are lightweight and do not rust, are more suitable.

[0004] FIG. 6 shows an example of a conventional aluminum block shown in Patent Document 1, and FIG. 7 is a diagram for explaining the situation of transporting a heavy object to a factory. This aluminum block 100 is composed of aluminum shaped members 13 on the upper and lower surfaces, and four columns 14 connecting the upper and lower surfaces are made of aluminum shaped steel. Each member is joined by welding, and the external shape of the block 100 is a rectangular parallelepiped of 200 mm x 300 mm x 400 mm. In addition, bolt holes 15 are drilled on all six surfaces in order to join adjacent blocks above, below, left, and right. The shaped members 13 constituting the upper and lower surfaces are rectangular pipes with ribs provided in the hollow space.

[0005] A typical road surface structure for transporting heavy loads is constructed by stacking blocks 100 flat while joining them with bolts and nuts, and laying a steel plate 20 on top of them, as shown in Fig. 7. Then, a heavy load 50 is placed on rollers 30 or the like, transported on the steel plate 20, and brought into a factory 60.

[0006] Here, the bolt holes 15 drilled in the blocks 100 are about 1 to 2 mm larger than the bolt diameter, so when the blocks 100 are stacked flat, depending on the shape of the ground, deviations of several millimeters that occur in each bolt hole 15 can accumulate, causing a large step in the road surface. If this step is small, it can be absorbed to some extent by the iron plate 20 laid on top of the blocks 100. In addition, the bolt holes 15 drilled in the blocks 100 are also hidden by the iron plate 15, so the bolt holes 15 do not become an obstacle when the rollers 30 and the like pass through.

[0007] However, the iron plates 20 are large and heavy, and it is not an easy task to lay the iron plates 20 after stacking the blocks 100. In addition, it is sufficient to form a road surface through which the rollers 30 carrying the heavy loads 50 can pass, so it is considered excessive to lay the iron plates 20 over the entire road surface structure. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] Utility model registration No. 3240372 Summary of the Invention [Problem to be solved by the invention]

[0009] In view of the above circumstances, the present invention aims to provide a road structure for transporting heavy objects, which does not require the laying of steel plates, and allows rollers carrying heavy objects to run smoothly directly on the upper surface of the blocks. [Means for solving the problem]

[0010] The road surface structure for transporting heavy objects of this invention is a road surface structure for transporting heavy objects formed by stacking rectangular blocks, with adjacent blocks joined together with bolts and nuts, and the top block located at the topmost level of the road surface structure is flat and has no irregularities.

[0011] In addition, when arranging the blocks of the road surface structure, it is preferable to have a location where a block is placed directly above two blocks that are placed side by side at the same height, straddling them. Effect of the Invention

[0012] According to this invention, since the top surface of the top block is flat and has no irregularities, rollers carrying heavy loads can run smoothly directly on the top surface of the block without laying a steel plate. Also, by providing a place where the block directly above two blocks installed side by side at the same height is installed across them, the difference in the road surface caused by the misalignment of the bolt diameter and bolt hole can be reduced, so the top surface of the top block, which becomes the road surface, can be kept flat. [Brief description of the drawings]

[0013] [Figure 1] These are examples of blocks used in this invention, where (a) is the top block and (b) is the general block. [Diagram 2] FIG. 2 is a diagram illustrating a situation in which heavy objects are transported to a factory using the road surface structure of the present invention. [Diagram 3] This is a first embodiment of a road surface structure. [Figure 4] This is a second embodiment of the road surface structure. [Diagram 5] 3 is a third embodiment of the road surface structure. [Figure 6] 1 is an example of a conventional aluminum block. [Figure 7] FIG. 1 is a diagram illustrating a situation in which a heavy object is transported to a factory. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] This invention relates to a road surface structure constructed by stacking blocks for the transport of heavy machinery, etc. Hereinafter, an embodiment of the invention will be described with reference to the attached drawings. Note that the road surface refers to the surface that contacts when a roller or the like passes over, and the road surface structure refers to the entire structure constructed on the ground, including the blocks stacked under the road surface to form the road surface.

[0015] In this invention, the blocks stacked in the road surface structure are the top block placed on the top tier and the general block placed on the second tier and below. Figure 1 shows an example of the blocks used in this invention, with (a) being the top block and (b) being the general block. The top block 11a is basically a rectangular parallelepiped with an external dimension of 150 mm x 300 mm x 400 mm, and the general block 11b is basically a rectangular parallelepiped with an external dimension of 200 mm x 300 mm x 400 mm. The size of these blocks 11 is not limited to these values, and other blocks of different sizes may be added and used. In addition, these blocks 11 are preferably made of aluminum or carbon fiber. If they are made of aluminum, there is no need to worry about rust, and if they are made of carbon fiber, the weight of the blocks can be reduced.

[0016] The basic structure of the aluminum general block 11b is made of rectangular parallelepiped members 13 with thin upper and lower surfaces, and equal angle iron is used for the four outer frame columns 14 connecting the members 13 together, and each member is joined by welding. Note that the upper and lower surfaces may be reinforced by connecting the centers of each surface with a cylindrical column.

[0017] The mold material 13 used for the upper and lower surfaces may be a rectangular pipe with a hollow rib. Such mold material 13 is also called a "Gohei" or "Shakukaku". The aluminum mold material 13 can be manufactured as an extrusion material and has sufficient strength for use on the upper and lower surfaces of the general block 11b.

[0018] The blocks 11 are joined together using bolts and nuts. In the general block 11b, bolt holes 15 of φ12 are formed on all faces, and the positions of the bolt holes 15 are determined so that any of the 200 mm×300 mm faces, the 300 mm×400 mm faces, and the 200 mm×400 mm faces can be joined together, and further, two blocks 11 can be joined together. The size of the bolt holes 15 is not limited to φ12, and may be determined according to the diameter of the bolt to be used.

[0019] Meanwhile, the top block 11a also has bolt holes 15 on its surface other than the top surface. The reason why no bolt holes are provided on the top surface of the top block 11a is to eliminate any obstacles so that rollers and the like can pass smoothly over the top surface. In other words, by not providing bolt holes on the top surface, the top surface of the top block 11a can be made into a flat road surface without any irregularities. The top block 11a is basically composed of parts formed by welding aluminum plates.

[0020] 2 is a diagram illustrating a situation in which heavy loads are transported to a factory using the road surface structure of the present invention. The blocks 11 of the road surface structure 10 are arranged such that the topmost block 11a is arranged on the topmost level, and the general blocks 11b are stacked in multiple levels below the second level from the top, and these adjacent blocks 11 are joined together with bolts.

[0021] The upper surface of the top block 11a is flat and free of irregularities such as bolt holes, allowing the rollers 30 carrying the heavy load 50 to pass through smoothly, and the heavy load 50 can be transported to the factory 60 without the need for a steel plate underneath.

[0022] The method of stacking the general blocks 11b is not limited to that shown in Fig. 2, and there are various ways of stacking according to the situation at the site. Therefore, an embodiment of the road surface structure is shown below. Fig. 3 shows an embodiment 1 of the road surface structure. Here, the road surface structure 10 is formed so as to form a road surface 18 that becomes two parallel rails so that rollers carrying heavy loads can move back and forth in a straight line. These two rail road surface structures are connected to each other at the second level from the top using the general block 11b, which is provided in order to maintain the shape of the road surface structure 10.

[0023] Top blocks 11a are installed in a row on the top stage of the road surface structure 10. Here, since the top surface of the top blocks 11a is flat and has no irregularities such as bolt holes, there is no need to lay an iron plate on top of the road surface structure 10 as in the past, and rollers can pass directly over the top surfaces of the top blocks 11a.

[0024] Moreover, the top block 11a is installed across two general section blocks 11b. In other words, the joint surface between adjacent top blocks 11a is directly above the general section blocks 11b. This makes it difficult for steps to occur due to misalignment of bolt holes relative to the bolt diameter, and the flatness of the road surface 18 is maintained. In other words, with such a road surface structure 10, it is possible to create a road surface 18 that eliminates both surface irregularities due to the absence of bolt holes and structural steps due to stacking blocks 11.

[0025] In addition, since there are gaps between the general blocks 11b, the load-bearing capacity of the road surface structure 10 is smaller than when stacked flat, but if the weight of the heavy object is not too heavy, it can be an appropriate structure that does not require excessive design.

[0026] FIG. 4 shows Example 2 of the road surface structure. This road surface structure 10 is also formed to form two road surfaces 18. In addition, the topmost blocks 11a are arranged side by side on the top of the road surface structure 10. In addition, the same mold material 13 used for the upper and lower surfaces of the general section block 11b is installed in the space formed at the end of the road surface 18, and the topmost surface is also smooth. In addition, the topmost block 11a is provided across the general section block 11b arranged below it. Furthermore, the general section block 11b in the second row from the top is provided across the general section block 11b in the third row. Therefore, the road surface 18 is less likely to have a step due to the misalignment of the bolt holes relative to the bolt diameter, and the flatness of the road surface 18 is maintained. In addition, the general section block 11b in the second row from the top is arranged sideways without any gaps, resulting in a road surface structure 10 that is stronger than that of Example 1. Furthermore, since there are gaps between the general section blocks 11b in the bottom row, the number of blocks 11 can be reduced compared to stacking them flat, preventing excessive design.

[0027] FIG. 5 shows Example 3 of the road surface structure. This road surface structure 10 is also formed to form two road surfaces 18. Furthermore, the topmost blocks 11a are arranged side by side on the topmost stage of the road surface structure 10. In Example 3, the third stage from the top is shifted by half the length of the blocks 11 from the flat stacked state, resulting in a structure in which the joint surfaces of adjacent blocks 11 at the same height are shifted for each stage. This makes it difficult for steps to occur on the road surface 18 due to misalignment of the bolt holes relative to the bolt diameter, and the flatness of the road surface 18 is maintained.

[0028] The above-mentioned Examples 1, 2, and 3 are merely examples of the road surface structure 10, and many other patterns of the road surface structure 10 are conceivable. In addition, as in Examples 1, 2, and 3, when arranging the blocks 11, if a block 11 is arranged so that a block 11 is arranged directly above two blocks 11 arranged side by side at the same height, the step of the road surface 18 caused by the accumulation of deviations of the bolt holes relative to the bolt diameter can be suppressed. In addition, since the blocks can be arranged with gaps between them to accommodate heavy objects, it is possible to design a road surface structure that does not have excessive load resistance. [Explanation of symbols]

[0029] 10 Road structure 11 Blocks 11a Top block 11b General Block 13 Profile material 14 Pillars 15 Bolt holes 18 Road surface 20 Iron Plate 30 Roller 50 heavy items 60 Factory 100 Traditional Blocks

Claims

1. A road surface structure for transporting heavy loads formed by stacking rectangular blocks, adjacent blocks are joined with bolts and nuts, and the top block located at the topmost level of the road surface structure has a flat top surface without any irregularities.

2. A road structure for transporting heavy objects as described in claim 1, characterized in that the arrangement of the blocks includes a location where a block directly above two blocks installed side by side at the same height is installed across them.

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