JP6541264B2 - Method and apparatus for eliminating level difference of rigid floor plate - Google Patents

Description

  The present invention relates to a method and an apparatus for eliminating a step of a rigid floor plate, and more particularly, to a method and an apparatus for eliminating a step between a floor plate laid on a traveling road surface of a heavy machine and a road surface.

  When it is necessary to protect or reinforce the road surface (for example, ground surface, concrete pavement surface, asphalt pavement surface, etc.) of the construction site where heavy machinery is operated and operated in civil engineering and construction work using heavy machinery such as trucks, backhoes and cranes In some cases, a rigid floor plate with a thickness of about 10 to 30 mm may be laid on a road surface, and heavy machinery may be operated and run on the floor plate. Usually, a metal base plate is used, but a synthetic resin or wooden base plate may be used. By installing a rigid floor plate, safe and efficient operation and running of heavy machinery can be ensured, but on the other hand, the motion of heavy machinery is directly transmitted to the floor plate to generate large vibrations, and the vibrations affect the neighborhood through the road surface. In construction sites such as urban areas where houses are densely packed in the neighborhood, it is necessary to take anti-vibration measures to suppress the influence of vibration to the neighborhood as well as laying floorboards.

  Conventionally, as vibration isolation measures for construction sites using floor boards, vibration absorbers (for example, mats made of olefin resin, mats made of polyurethane foam, etc.) are placed between the road surface and the base plate (middle layer) to propagate vibration. The reduction is performed (see Patent Document 1). If a vibration absorbing material is arranged below the floor plate, the difference in level between the road surface and the floor plate will be large, but by arranging an appropriate slope on such a level difference, the runnability of heavy equipment can be ensured (Patent Document 2) ~ 4). In some cases, asphalt pavement is applied to the boundary between the floorboard and the road surface to eliminate the level difference. In addition, if a problem vibration (for example, vibration with a large level) occurs, place a concrete wall (PC wall) between the vibration source (operating place of heavy equipment and running place) and the anti-vibration target And the propagation of vibration may be shielded by the PC wall.

JP, 2014-034813, A JP-A-11-068102 Utility model registration No. 3061572 Utility model registration 3128102 gazette

  However, the conventional anti-vibration measures such as the arrangement of the vibration absorbing material described above or the placement of the PC wall have problems that the application takes time and effort. In other words, it is unreasonable and uneconomical to take anti-vibration measures in advance for the entire construction site, and it is necessary to take measures only for the places where vibration occurs, but before the start of the construction It is difficult to predict, and measures are often taken at places where the effects of vibration have become apparent since construction has begun. When the conventional anti-vibration measures are applied to the place where the vibration has become apparent after the start of the construction, at least a part of the construction has to be temporarily interrupted, causing a delay in the construction period, which in turn increases the construction cost May lead to It is desirable to develop a technology that can suppress the vibrations that have become apparent after the start of the construction in a short time without interrupting the construction.

  Also, the conventional anti-vibration measures are effective for reducing the vibration generated by heavy equipment such as backhoes operating on the floor plate, but the vibration generated by heavy machinery such as a truck traveling between the road surface and the floor plate in a reciprocating manner There are also problems that can not be addressed sufficiently. In general, it is known that traffic vibration of heavy equipment such as a truck occurs at a construction site, and the traffic vibration is suppressed by limiting the traveling speed of the heavy equipment to, for example, 20 km / hr or less at a normal construction site. However, according to the preliminary experiments of the present inventors, as shown in the graph of FIG. 5, heavy equipment such as a truck traveling reciprocally between the road surface and the floor plate, even if the traveling speed is about 5 km / hr. It has been found that a large vibration is generated when traveling on a step between (the boundary) of the road surface E and the peripheral edge of the floor board 1.

  In the preliminary experiment, first, as shown in FIG. 6A, the vibration of the road surface E generated by the heavy equipment 2 (truck) traveling at a predetermined speed (5 km / hr, 10 km / hr) on the road surface E of the construction site Vibration of the road surface E generated by the heavy equipment 2 traveling at a predetermined speed (5 km / hr) is measured by the vibration meter 9 and then the road surface E on which the floor plate 1 (thickness 20 mm) is laid as shown in FIG. It measured on the road shoulder of the boundary part of the floor plate 1 and the road surface E. The graph of FIG. 5 represents the results of these experiments (measurement values of the vibration meter 9) by frequency analysis (Fourier transform). The step T (see FIG. 6C) at the boundary between the base plate 1 and the road surface E is only about 20 mm (thickness of the base plate), but as can be seen from the graph of FIG. In the region, the vibration during step travel is extremely large compared to the vibration during travel without step.

  The cause of the difference in the large vibration as shown in FIG. 5 due to the presence or absence of the small step T of about 20 mm is that the heavy machine 2 (the wheel of the heavy machine 2 or the endless track 3) has a step as shown in FIG. It is considered that a large excitation force F is applied to the road surface E when T is dropped. This is when the heavy machine 2 travels from the road surface E to the floor plate 1 as compared to the vibration when the heavy machine 2 travels from the floor plate 1 to the road surface E (right-pointing arrow going down the step T in FIG. This is also supported by the fact that the vibration of the left arrow pointing up the step T in FIG. 6 (B) is relatively small. Although it is thought that the vibration which generate | occur | produces by driving | running | working of the level | step difference of such a base plate 1 and the road surface E is a cause of the vibration which becomes apparent after the start of the above-mentioned construction. If it is possible to develop a technology to reduce the vibration caused by the step between the floor plate 1 and the road surface E, it can be expected to suppress at least a part of the vibration that appears after the start of construction in a short time.

  Therefore, an object of the present invention is to provide a method and an apparatus for eliminating the step of the rigid floor plate which can suppress the vibration generated by the step between the floor plate and the road surface in a short time.

  The present inventors focused on installing a slope on the step between the road surface and the rigid floor plate. If the heavy equipment 2 on the floor plate 1 is lowered to the road surface E along the slope, it is possible to suppress the generation of a large excitation force F as shown in FIG. However, according to the preliminary experiments of the present inventors, just by installing the slope on the step, for example, the position of the slope shifts when the front wheel of the heavy equipment 2 (track) travels, and the rear wheel travels along the slope It was experienced that we could not do it. For example, it is conceivable to fix the slope using a magnet or anti-slip on the bottom of the slope (see Patent Documents 1 and 3), but the magnet may not be able to sufficiently fix due to dirt on the installation surface. It is difficult to suppress the shift of the slope due to traveling only by the slip prevention on the bottom of the slope. In order to suppress the vibration generated by the step between the road surface and the floor plate by the slope, it is important to firmly fix the slope to the floor plate.

  In addition, according to preliminary experiments by the present inventors, even when the slope is fixed to the step between the road surface and the rigid floor plate, it is assumed that the road surface E is uneven (not landed) as shown in FIG. It has been experienced that the vibration of heavy equipment 2 (truck) traveling through the slope 20 can not be sufficiently suppressed, and a relatively large vibration may remain. That is, when there is a gap 5 between the floor plate 1 on which the slope 20 is installed and the road surface E, not only vibration occurs when the heavy machine 2 drops the step T, but the heavy machine 2 is above the gap 5 around the slope. The base plate 1 is vibrated also when passing through. In order to reduce the vibration generated in the boundary area between the road surface and the floorboard by the slope, it is important not only to eliminate the step but also to suppress the vibration caused by uneven ground on the road surface around the step. It is. The present invention has been completed as a result of research and development based on the results of such preliminary experiments.

Referring to the embodiment of FIG. 1, the method for eliminating the difference in level of the rigid floor plate according to the present invention is a step T with respect to the traveling road surface E at one edge of the rigid floor plate 1 laid on the traveling road surface E of the heavy machine 2 (FIG. Fill the slope surface with the maximum thickness side 22 of the slope material 20, and project from the bottom of the maximum thickness side 22 of the slope material 20 and have a width D in the direction intersecting with the inclination direction of the slope of the slope material 20 or so height R is projecting tongue 30 in which a plurality of pressing the deformable protrusion 32 which increases according to the projection distance is formed on the surface of the slope member 20 (see FIG. 2 (C) and (D)) And the slope member 20 is fixed to one edge of the rigid base plate 1 by pressing deformation of the tongue 30 and the gap 5 between one edge of the rigid base plate 1 and the traveling road surface E (5 1 (D)) is filled.

Further, referring to the embodiment of FIG. 1, the apparatus for eliminating the difference in level of the rigid floor according to the present invention is used by pressing the side surface 22 of maximum thickness on one edge of the rigid floor 1 laid on the traveling road surface E of the heavy machine 2 The slope member 20 which fills the step T with E (see FIG. 1 (D)) with slopes and the bottom of the maximum thickness side 22 of the slope member 20 protrude from the bottom of sandwiching between rigid floor plate 1 and traveling road surface E A plurality of pressure-deformable projections 32 are formed on the surface, which are rare and whose width D or height R in the direction intersecting with the inclination direction of the inclined surface of the slope member 20 increases in accordance with the distance from the slope member 20 A tongue 30 (see FIGS. 2C and 2D) is provided, and the slope member 20 is fixed to one edge of the rigid base plate 1 by pressing deformation of the tongue 30, and one edge of the rigid base plate 1 and the traveling road surface It is the one that fills the gap 5 with E (see Fig. 1 (D)). Ru.

In the preferred embodiment, a plurality of pressing deformations in which the width D and the height R in the direction intersecting with the inclination direction of the inclined surface of the slope member 20 both increase in the surface of the tongue 30 according to the protrusion distance from the slope member 20 Form possible projections 32. Preferably, as shown in FIGS. 1 (B) and 1 (C), a plurality of cuts 34 are made in the projections 32 on the surface of the tongue 30 of the slope member 20. In another preferred embodiment, as shown in FIG. 3, the tongue 30 coupled to the slope member 20 may be replaceable, including coupling means 28 for releasably coupling the tongue 30 to the slope member 20. .

The method and apparatus for eliminating the difference in level of the rigid floor plate according to the present invention, the maximum thickness side surface 22 of the slope member 20 filling the level difference T with the traveling road surface E at one edge of the rigid floor plate 1 laid on the traveling road surface E of the heavy machine 2 The width D or height R of the slope member 20 in the direction intersecting with the inclination direction of the slope surface of the slope member 20 is large depending on the protrusion distance from the slope member 20. The plurality of pressable and deformable convex portions 32 are formed on the surface and the tongue portion 30 is protruded to be sandwiched between the rigid base plate 1 and the traveling road surface E, and the tongue member 30 makes the slope member 20 one edge of the rigid base plate 1 Since the gap 5 between one edge of the rigid floor plate 1 and the traveling road surface E is fixed while being fixed, the following advantageous effects can be obtained.

(A) The slope member 20 is installed at one edge of the base plate 1 and the tongue 30 capable of pressing and deforming the slope member 20 is sandwiched between the base plate 1 and the traveling road surface E. The coefficient of friction can be increased by closely contacting E with the pressing deformation of the tongue portion 30 and the fixing strength of the slope member 20 to the bottom plate 1 can be increased to prevent the shift of the slope member 20 during traveling of the heavy machine 2 .
(B) By causing the heavy machine 2 to travel along the slope material 20 while preventing the displacement of the slope material 20, it is possible to reduce the vibration generated when the heavy machine 2 travels the step T between the base plate 1 and the traveling road surface E it can.
(C) Moreover, even if the traveling road surface E is uneven (not landed), the gap 5 between the road surface E and the floor plate 1 can be filled by the pressing deformation of the tongue 30, so the road surface E and floor plate 1 The vibration of the floor plate 1 which occurs when the heavy machine 2 travels above the gap 5 can be suppressed to a low level.

(D) Since installation, fixation and removal of the slope member 20 are simple and can be carried easily by one worker, it is applied to the place where the vibration occurred after the start of the construction to suppress the vibration in a short time Can.
(E) By making a plurality of notches 34 in the convex portion 32 of the tongue portion 30 of the slope member 20, the pressing deformation of the tongue portion 30 can be enhanced and the adhesion between the base plate 1 and the road surface E can be enhanced. Fixing strength and vibration suppression performance of the material 20 can be enhanced.
(F) Although the tongue portion 30 of the slope member 20 may be a single member, by forming a plurality of convex portions 32 having the same or different height R, the vehicle travels on various traveling road surfaces E having different inland conditions. It is possible to make a possible level difference eliminating device.
(G) Further, by making the slope member 20 and the tongue portion 30 separable, the transportability and the workability of the step eliminating device can be improved, and even if either one is broken, it can be replaced. It can extend the life of the product.

Hereinafter, modes and examples for carrying out the present invention will be described with reference to the attached drawings.
These are explanatory drawings of one Example of the level | step difference cancellation | release apparatus by this invention. These are explanatory drawings of the other Example of the level | step difference cancellation | release apparatus by this invention. These are explanatory drawings of the level | step difference cancellation | release apparatus of this invention which was able to isolate | separate a slope material and a tongue part. These are explanatory drawings of the experiment which confirmed the effect of the level | step difference cancellation | release apparatus of this invention. These are explanatory drawings of the vibration which generate | occur | produces in the level | step difference of a road surface and a floor board. These are explanatory drawings of the measurement experiment of the vibration of FIG.

  Fig. 1 (A) shows. The Example which applied the level | step difference cancellation | release apparatus 10 of this invention to the floor plate 1 of the road surface E of the construction site where heavy machinery 2 such as a truck travels is shown. The base plate 1 in the illustrated example is a metal plate (base plate) having a thickness of about T = 20 to 25 mm, but the present invention is applied to a synthetic resin or wooden base plate 1 having a thickness of about T = 10 to 30 mm. It is also possible. FIG. 1 (B) shows an enlarged plan view of the step difference eliminating device 10 shown by an ellipse B of a dashed dotted line in FIG. 1 (A), and FIG. 1 (C) shows a sectional view of the device 10 perpendicular to the road surface E. . As shown in FIGS. 1 (B) and 1 (C), the step difference eliminating device 10 of the illustrated example includes a slope member 20 which is installed by pressing the side surface 22 with the maximum thickness to one edge of the bottom plate 1 It is constituted by a tongue 30 which protrudes from the bottom of the maximum thickness side 22 and is sandwiched between the rigid base plate 1 and the traveling road surface E.

  The slope material 20 of the level difference eliminating device 10 is a member whose thickness is gradually reduced from one end side to the other end side as shown in FIG. 1 (C). From the one end side to the other end side, the maximum thickness side surface 22 of the thickness T0 at one end side is pressed against the side edge surface of the thickness T of the base plate 1 as shown in FIG. 1 (D) The level difference between the base plate 1 and the road surface E can be filled with the inclined surface that reaches to the bottom. The thickness T0 on one end side of the slope member 20 is desirably about the same as the thickness T of the bottom plate 1, but may be slightly larger or smaller than the thickness T of the bottom plate 1.

  The length W0 (see FIG. 1 (B)) of the sloped surface extending from one end side to the other end of the slope member 20 (see FIG. 1B) is inclined by mounting the wheel of the heavy equipment 2 or the endless track 3 (hereinafter simply referred to as a wheel) The size can be made to travel in the direction. If the length W0 is too short, the wheel 3 will fall on the road surface E before getting on the inclined surface, so it is desirable to make the same size or larger than the diameter of the wheel 3 (see also FIG. 4 (B) ). Also, the width D0 (see FIG. 1D) in the direction intersecting with the inclination direction of the inclined surface of the slope member 20 is also about the same size as the width of the wheel 3 so that the wheel 3 of the heavy machine 2 can be placed and traveled. Or slightly larger. The level difference eliminating device 10 of the illustrated example is for causing either the left or right wheel 3 of the heavy machine 2 to travel, and the pair is combined to run the left or right wheel 3 of the heavy machine 2 while traveling.

  However, the length W0 and the width D0 of the slope member 20 are not limited to the illustrated example, and for example, the width D0 of the sloped surface of the slope member 20 is large enough to allow both wheels 3 of the heavy machine 2 to run simultaneously. It is also possible. However, when the width D0 of the inclined surface is increased, the level difference eliminating device 10 becomes heavy, and carrying by one worker becomes difficult. As shown in FIG. 1, by using the slope member 20 having a width D0 that allows only one of the left and right wheels 3 of the heavy equipment 2 to travel, weight reduction and portability of the level difference elimination device 10 can be achieved.

  If necessary, as shown in FIG. 2, an appropriate number of grooves 24 can be provided on the bottom surface of the slope member 20 in contact with the road surface E to further reduce the weight of the slope member 20. In the illustrated example, a plurality of grooves 24 extending in the width direction are formed on the bottom surface of the slope member 20, but it is also possible to use grooves 24 in the length direction. Moreover, although the contact area with the road surface E of the slope material 20 becomes small by forming the groove 24 in the bottom surface, when there is a possibility that the slope material 20 may slip on the road surface E due to the reduction of the contact area, It is also possible to attach the anti-slip member 26 to the bottom surface other than the groove 24. However, since the level difference eliminating device 10 can be firmly fixed to the floor plate 1 by the tongue portion 30 as described later, the possibility of slipping is small even if the contact area with the road surface E is reduced.

  The material of the slope member 20 is not particularly limited as long as it can be repeatedly used, and may be, for example, metal, synthetic resin, wood, a mixed material combining different materials, or the like. Preferably, the slope member 20 is made of a vibration absorbing material such as durable rubber. By making the slope member 20 made of a vibration absorbing material, it is possible to absorb the vibration when the wheel 3 of the heavy machine 2 gets on the slope member 20 and to reduce the vibration generated by the slope member 20. However, as mentioned above, the traveling speed is limited so that traffic signals of heavy equipment are not generated at a normal construction site, and it is necessary to absorb the vibration by the slope material 20 if the large vibration is not generated by the slope material 20 Sex is low.

  As shown in FIGS. 1 (B) and 1 (C), the tongue 30 of the step eliminating device 10 protrudes from the bottom of the maximum thickness side 22 of the slope member 20 by a predetermined length W1 to form the rigid base plate 1 and the traveling road surface. It is a member which is sandwiched between E and on the surface of which a convex 32 which can be pressed and deformed by the weight of the base plate 1 is formed. The tongue portion 30 in the illustrated example is U-shaped that is separably connected to the bottom surface of the slope member 20 (see also FIG. 3A), and the U-shaped middle portion 30 c is used as the bottom surface of the slope member 20. The U-shaped end portions 30a and 30b are projected to the maximum thickness side of the slope member 20, and the upper surface of each of the protruded end portions 30a and 30b has a hilly shape over substantially the entire length of the predetermined length W1. The convex portions 32a and 32b of the second embodiment are formed. In the illustrated example, the convex portion 32 formed on the surface of the tongue portion 30 is indicated with hatching for the sake of easy understanding, but the tongue portion 30 and the convex portion 32 can be integrally molded.

  The tongue portion 30 can be made of the same material as the slope member 20, but the convex portion 32 formed on the surface of the tongue portion 30 is shown in FIG. 1 (D) when sandwiched between the rigid base plate 1 and the traveling road surface E. As shown in), it can be pressed and deformed by the weight of the floor plate 1. By pressing and deforming the convex portion 32 as shown in FIG. 1D, even if the traveling road surface E is uneven (uneven), the gap 5 between the road surface E and the base plate 1 is pressed by the tongue 30 It is possible to suppress the vibration of the floor plate 1 generated when the heavy machine 2 travels above the gap 5 due to the deformation. Further, the tongue portion 30 and the base plate 1 and the road surface E can be brought into close contact with each other by pressing deformation to increase the friction coefficient of the slope member 20 to increase the fixing strength of the slope member 20 to the base plate 1. A shift of 20 can be prevented. For example, the entire tongue 30 is made of a durable elastic material (synthetic rubber) having a relatively small coefficient of elasticity, or the tongue 30 and the projection 32 are made of different materials. The convex portion 32 can be formed using such an elastic body. The elastic tongue portion 30 also functions as a vibration absorbing material that reduces the vibration of the heavy equipment 2 traveling on the floor plate 1.

  Further, even when the material of the tongue 30 and the projection 32 has a relatively large elastic coefficient, the projection 32 can be made by the weight of the base plate 1 by inserting a plurality of cuts 34 in the projection 32 as shown in the example. It is also possible to make it possible to press and deform. That is, the entire tongue portion 30 is made of an elastic body (synthetic rubber) having a relatively large elastic coefficient, and the convex 34 formed on the surface is cut into a notch 34 to enhance the pressing deformation property. The tongue 30 can be pressed and deformed so as to fill the gap 5 when sandwiched between the traveling road E and the adhesion between the tongue 30 and the base plate 1 and the road E can be enhanced. The depth and spacing of the incisions in the tongue 30 can be designed to provide the required durability and press deformability.

  The convex portion 32 on the surface of the tongue portion 30 is not only the upper surface of the tongue portion 30 (the surface in contact with the bottom plate 1) as shown in FIG. 1C, but also the step elimination device 10b shown in FIG. It is also possible to form on the lower surface of the tongue 30 (the surface in contact with the road surface E), or to form both the upper and lower surfaces. In addition, it is possible to follow various nonlanding traveling road surfaces E by enhancing the pressing deformability of the convex portion 32, but in the nonlanding condition of the road surface E (the size of the gap 5 between the road surface E and the floor plate 1) It is also effective to design the height R1 of the convex portion 32 in combination. For example, when the gap 5 is relatively small, the step eliminating device 10 with a small height R1 of the convex portion 32 is used, and when the gap 5 is relatively large, a large step eliminating device 10 with a height R1 of the convex portion 32 is used.

  Further, not only a single convex portion 32 is formed on the surface of the tongue portion 30 of the level difference eliminating device 10 as shown in FIG. 1C, but the same height on the surface of the tongue portion 30 as shown in FIG. It is also effective to set it as the level | step difference cancellation | release apparatus 10c which formed several convex part 32a-32d of predetermined space | interval S2 by R2. As in the case of FIG. 1D, the gap 5 between the road surface E and the floor plate 1 is filled by pressing deformation of the plurality of convex portions 32a to 32d, and the floor plate 1 generated when the heavy machine 2 travels above Vibration can be suppressed. Further, by pressing and deforming the plurality of tongue portions 32a to 32d, the base plate 1 and the road surface E can be brought into close contact with each other to increase the coefficient of friction between them, and the fixing strength of the slope member 20 to the base plate 1 can be enhanced.

  When forming a plurality of projections 32a to 32d on the surface of the tongue 30, the projections 32a to 32d may have the same width D, but the width D may be changed for each of the projections 32a to 32d. It is possible. For example, as shown in FIG. 2C which is a plan view of the level difference eliminating device 10c, the base plate 1 and the road surface E can be obtained by gradually increasing the widths Da to Dd of the convex portions 32a to 32d as they move away from the slope member 20. It can be expected that the coefficient of friction between the slope material 20 and the bottom plate 1 can be increased by increasing the coefficient of friction coefficient with the surface material. It is also possible to change mutual spacing Sa-Sd for every convex part 32a-32d.

Furthermore, in the case where the plurality of convex portions 32 a to 32 d are formed on the surface of the tongue portion 30, it is also effective to change the height R for each of the convex portions 32 a to 32 d. For example, the base plate 1 and the road surface E can be obtained by gradually increasing the heights R2 to R4 of the convex portions 32a to 32d in accordance with the protruding distance from the slope member 20 as in the step difference eliminating device 10d illustrated in FIG. It can be expected that the coefficient of friction between the slope material 20 and the bottom plate 1 can be increased by increasing the coefficient of friction coefficient with the surface material. Further, by forming a plurality of convex portions 32a to 32d having different heights R, it is possible to follow various traveling road surfaces E having different inland conditions (the size of the gap 5 between the road surface E and the floor plate 1). It can also be expected that the step difference eliminating device 10 is used.

  FIG. 3 shows a method for separably connecting the U-shaped tongue 30 and the slope member 20 shown in FIG. The slope member 20 shown in FIGS. 3A and 3B can be fitted with the middle portion 30c of the U-shaped tongue 30 as a connecting means 28 for detachably connecting the U-shaped tongue 30. A slot 28 is formed in the bottom surface, for example, the tongue 30 can be replaced by separating the broken tongue 30 from the slot 28 and inserting a new tongue 30. Alternatively, as shown in FIG. 3C, the bottom surface of the slope member 20 is formed with a connecting means 38 for detachably connecting the T-shaped tongue 30, and both the T-shaped tongue 30 are connected to the connecting means 38. It is also possible to insert and connect the arm 30e. The central leg 30d of the T-shaped tongue 30 in which both arms 30e are fixed to the slope member 20 is made to project to the maximum thickness side of the slope member 20, and the convex portion 32 is formed on the surface of the central leg 30d which is made to project. Form.

  By making the slope member 20 and the tongue portion 30 separable as shown in FIG. 3 and making them separately portable, it is possible to facilitate the transportability and the construction of the level difference eliminating device 10. In addition, even if either the slope member 20 or the tongue 30 is broken, the life of the step eliminating device 1 can be extended by replacing only the broken member. Furthermore, using a plurality of tongues 30 having different numbers of protrusions 32, widths D and heights R formed on the surface of the tongue 30, for example, the uneven state of the road E (the gap between the road E and the floor plate 1) By following the various traveling road surfaces E having different inland conditions (the size of the gap 5 between the road surface E and the base plate 1) by replacing the tongue portion 30 coupled to the slope member 20 according to the size of 5). It is also possible to make the possible level difference eliminating device 10.

  However, the tongue portion 30 of the level difference eliminating device 10 does not necessarily have to be separable from the slope member 20, and the step in which the tongue portion 30 is integrally formed with the slope member 20 as shown in FIGS. It is also possible to use cancellation devices 10b, 10c and 10d. Further, the shape of the tongue portion 30 is not limited to the U-shape or the T-shape as shown in the illustrated example, but can be any shape that increases the coefficient of friction with the bottom plate 1 and the road surface E, for example As shown in FIG. 2C, it is also possible to make the tongue portion 30 have a width D0 to D2 which is substantially the same as that of the slope member 20. However, when the width of the tongue portion 30 is increased, the step eliminating device 10 becomes heavy, and therefore U-shaped and T-shaped tongues as shown in FIG. 3 in order to make the step eliminating device 10 lighter and easier to carry. The portion 30 is effective, and it is also effective to gradually reduce the width D2 of the tongue 30 as the distance from the slope member 20 as shown in FIG. 2C.

[Example of experiment]
An experiment was conducted to confirm the vibration suppressing effect of the step eliminating device 10 of the present invention. In the experiment, as shown in FIG. 4A, the heavy machine 2 is reciprocated on the road surface E on which the floor plate 1 (thickness 20 mm) is laid, and in the step portion between the floor plate 1 and the road surface E Vibrometers 9a and 9b are installed at the road shoulder position separated by 1 m in the vertical direction (x direction) and 10 m apart, and the vibration level and horizontal direction in the vertical direction (z direction) by each vibration meter 9 The vibration level (x direction) was measured. First, after measuring the vibration level (dark vibration level) in the state (dark state) in which the heavy equipment 2 is not driven by the two vibrometers 9a and 9b, the experimental measurement was started.

  First, with the level difference eliminating device 10 of the present invention not applied (no countermeasure state), the heavy machine 2 is reciprocated at different speeds (5 km / hr, 10 km / hr) at the level difference T at the boundary between the floor plate 1 and the road surface E. The vibration levels at the time of traveling from the floor plate 1 to the road surface E (downward) and at the time of traveling from the road surface E to the floor plate 1 (upperward) were measured by two vibrometers 9 respectively. Next, with the step eliminating device 10 of the present invention applied (with measures taken), the heavy machine 2 is similarly reciprocated at different speeds (5 km / hr, 10 km / hr) at the step T at the boundary between the floor plate 1 and the road surface E The vibration level at the time of falling and the vibration level at the time of rising were measured by two vibrometers 9 respectively. The experimental results are shown in Table 1.

  The measurement value of the vibration meter 9a at a distance of 1 m shown in Table 1 indicates that the vibration level in the z direction at descent at a traveling speed of 5 km / hr is 88 dB when the heavy machine 2 is caused to travel on the step T without countermeasures. , Indicates that the vibration level in the z direction at the time of descent at a traveling speed of 10 km / hr is 94 dB. Vibration levels above 85 dB are generally the result of the house shaking hard and the sitting object falling down. On the other hand, when the heavy machine 2 is caused to travel on the level difference T in the state where the level difference eliminating device 10 of the present invention is applied, the vibration level in the z direction at descent is lowered to 72 dB at a traveling speed of 5 km / hr. The vibration level in the z direction at the time of descent is reduced to 76 dB at a speed of 10 km / hr. Vibration levels below 76 dB are generally conditions where the shoji moves slightly.

  In addition, the measurement value of the vibration meter 9b at a position 10 m apart shown in Table 1 descends at a traveling speed of 5 km / hr by causing the heavy machine 2 to travel on the level difference T in a state where the level difference eliminating device 10 of the present invention is applied. Vibration level in the z direction at the time decreased from 70dB to 58dB without measures, and the vibration level in the z direction at descent at a traveling speed of 10km / hr decreased from 74dB to 63dB with no measures, both being almost the same as dark vibration It shows that it has dropped to the vibration level.

  From these experimental results, as shown in FIG. 4 (B), by applying the step eliminating device 10 of the present invention to the step T between the base plate 1 and the road surface E, the conditions shown in FIG. 6 (C) and FIG. As compared with the case, it has been confirmed that the excitation force F generated by the heavy machine 2 passing through the step T can be suppressed to be small, and the vibration generated at the step T can be suppressed. Further, since the vibration level at a position 10 m away from the step T was able to be lowered to almost the same level as the dark vibration level, the step according to the present invention By applying the elimination device 10, it has been confirmed that complaints about vibration can be resolved. Furthermore, when the same experiment was repeated for another road surface E with different inland conditions, similar experimental results could be obtained. From this experimental result, the level difference eliminating device 10 of the present invention can be firmly fixed to the floor plate 1 regardless of the uneven road surface E, and not only the level difference can be eliminated. It has been confirmed that the vibration caused by uneven land (landlessness) can also be suppressed.

  Thus, it is possible to achieve the object of the present invention, "a method of eliminating a step in a rigid floor plate capable of suppressing a vibration generated by a step between a floor plate and a road surface in a short time, and a device for eliminating a step".

1 ... base plate 2 ... heavy machinery (trucks, etc.)
DESCRIPTION OF SYMBOLS 3 ... Wheel or endless track 5 ... Gap 9 ... Vibration meter 10 ... Step difference eliminating device 20 ... Slope material 22 ... Maximum thickness side 24 ... Groove 26 ... Anti-slip material 28 ... Coupling means 30 ... Tongue part 32 ... Convex part 34 ... Notch E: Road surface T: Step W0: Length of slope material (length in inclination direction)
D0 ... Width of slope material (width in the direction intersecting with the inclination direction)

Claims (8)

The maximum thickness side of the slope material is pressed against one edge of a rigid floor plate laid on the road surface of heavy equipment and the step with the road surface is filled with the inclined surface, and the slope material protrudes from the bottom of the maximum thickness side of the slope material Tongues having on their surface a plurality of pressable and deformable projections whose width or height in the direction intersecting with the inclination direction of the inclined surface increases according to the projection distance from the slope material A method of eliminating a difference in level of a rigid base plate, which is sandwiched between the two, and the slope member is fixed to one edge of the rigid base plate by pressing deformation of the tongue portion and filling a gap between one edge of the rigid base plate and the traveling road surface. The method according to claim 1 , wherein the tongue surface can have a plurality of pressing deformations in which the width and the height in the direction intersecting with the inclination direction of the inclined surface of the slope material both increase according to the protrusion distance from the slope material. Method of eliminating the difference in level of a rigid base plate having a convex portion formed thereon. The method according to claim 1 or 2 , wherein the convex portion on the surface of the tongue has a plurality of cuts. The method according to any one of claims 1 to 3, wherein the slope member includes coupling means for detachably coupling the tongue portion, and the tongue portion coupled to the slope member is replaceable. The slope material which presses the maximum thickness side to one edge of the rigid floor plate laid on the running road surface of heavy equipment and fills the step with the running road surface with the slope, and the rigid floor plate protruding from the bottom of the maximum thickness side of the slope material scissors write rare and width or height in the direction orthogonal to the inclination direction of the inclined surface of the slope member is a plurality of pressing the deformable protrusions which increases according to the projection distance from the sloping member between the road surface and A rigid base plate having a tongue portion formed on the surface, the slope member being fixed to one edge of the rigid base plate by pressing deformation of the tongue portion and filling a gap between the one edge of the rigid base plate and the traveling road surface Step clearance device. 6. The device according to claim 5, wherein the tongue surface has a plurality of pressable deformations whose width and height in the direction intersecting with the inclination direction of the inclined surface of the slope material both increase in accordance with the protrusion distance from the slope material. A step on the floor of a rigid base plate having a convex portion formed thereon. A device according to claim 5 or 6 , wherein the convex portion on the surface of the tongue has a plurality of cuts formed therein. A device according to any of claims 5 to 7, wherein the slope member includes coupling means for detachably coupling the tongue portion, and the tongue portion coupled to the slope member is replaceable.