JPH0729085U - Buffer abrasion resistant rubber plate - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent sewage from falling and scattering, and to slow down the flow rate of sewage to prevent damage to sewage facilities. [Structure] A plurality of substantially hemispherical anti-scattering members 13 are arranged in a close-packed shape, and a root portion 15 of the anti-scattering members 13 is provided with a predetermined curvature so as to be smoothly connected to an adjacent anti-scattering member 13. As a result, in the place where the sewage falls, the scattering direction of the sewage is dispersed to reduce the scattering, and the contact force when the foreign matter contacts the scattering prevention member 13 is dispersed to prevent the occurrence of cracks.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a buffer wear-resistant rubber plate that prevents scattering of sewage and damage to sewage facilities that occur at the head of sewage facilities.

[0002]

[Prior art]

 Conventionally, in sewage facilities, where sewage pipes meet or where there is a drop, the flow velocity of sewage may be large and the impact due to it may be locally high, which may cause the sewage facility to be worn or damaged. There was a problem. Various proposals have been made for these problems. For example, Japanese Utility Model Laid-Open No. 3-18286 discloses a U-shaped groove 50 having a bottom surface 51 provided with a plurality of energy-reducing projections 52 for suppressing sewage. . Further, Japanese Patent Application Laid-Open No. 4-108929 discloses an invention in which a rubber plate is provided as a buffer in order to reduce the impact of sewage.

[0003]

[Problems to be solved by the device]

 However, the above-mentioned conventional techniques have not been able to solve the problem that sewage is scattered at a confluent point where there is a head drop. That is, as shown in FIG. 11, the sewage that falls from the sewer pipes 61 and 62 that are piped above the manhole 60 is scattered on the lower surface of the manhole 70, which makes repair work difficult. . Further, in Japanese Utility Model Laid-Open No. 3-18286, foreign matter such as wood chips, metal fragments, and debris flowing with the sewage hits the depressing convex portion 52, and therefore the depressing convex portion 52 is damaged and compared with the main body. Since the energy-reducing convex portion 52 contacts more foreign matter, there is a problem that the energy-reducing convex portion 52 is heavily worn and unreliable for long-term use. Further, in Japanese Patent Laid-Open No. 4-108929, there is a problem that the sewer facility can be prevented from wearing due to the strong sewerage, but the sewerage cannot be slowed down. Therefore, a configuration in which these are added is conceivable, but in this case, the problem shown in FIG. 12 arises. FIG. 12 shows a configuration in which a rubber plate 53 having a protrusion 54 is disposed on the bottom surface of the U-shaped side groove 50. The numeral 57 indicates sewage, and the numeral 56 indicates foreign matter such as wood chips flowing with the sewage. In the above configuration, when the foreign matter 56 comes into contact with the protrusion 54, the protrusion 54 is made of rubber so that it is not damaged. However, the contact force from the foreign matter 56 is concentrated on the root portion 58 of the protrusion 54, and the crack 55 is generated at that portion. There is a problem that causes. Therefore, an object of the present invention is to provide a buffer wear-resistant rubber plate that prevents falling sewage from scattering, suppresses the flow rate of sewage to facilitate repair work, and prevents damage to sewage facilities. And

[0004]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention is provided in a sewage facility to prevent the falling sewage from splashing, and to prevent the sewage from splashing, a plurality of splash preventive members are provided on the surface of the wear-resistant rubber plate. It is provided in the. For example, the anti-scattering member is formed of one of a substantially hemispherical protrusion and a trapezoidal or triangular protrusion in cross section. Further, the scattering prevention member comprises a substantially hemispherical recess. Further, the root portion of the scattering prevention member has a predetermined curvature so as to be smoothly connected to the adjacent protrusion.

[0005]

[Action]

 Based on the above configuration, a large number of scattering prevention members are provided at the place where the sewage falls or where the sewage is strong so that it does not scatter when the sewage falls and is not damaged by cutting the sewage facility. The cushioned abrasion resistant rubber plate is arranged. This anti-scattering member has protrusions or recesses to increase the contact surface when sewage comes into contact to prevent concentrated wear, and to disperse the scattering direction by changing the angle of the contact surface. Also, make sure that scattered sewage is not scattered to a long distance.

The principle of the present invention will be described in detail with reference to FIG. FIG. 1 is a schematic diagram showing a situation in which falling sewage is considered as a string-like sewage aggregate and is scattered by a scattering prevention member. The falling sewage comes into contact with the hemispherical anti-scattering member and scatters (one-dot chain line in the figure). Since the scattering prevention member is hemispherical, the scattering direction is dispersed, and most of the scattering prevention member is substantially horizontal. Also, the momentum of the scattering will be mixed. In such a situation, among the sewage scattered by the splash prevention member, the sewage B with strong momentum becomes stronger than the sewage A scattered outside the splash prevention member (the sewage A and the sewage B The vector is larger in B). However, since the sewage B is scattered at a more horizontal angle than the sewage A is scattered, the sewage B is easily pushed or taken in by the sewage that falls next and is easily absorbed by the cushion abrasion-resistant rubber plate. Since the scattering direction is changed to, the scattering distance does not increase and it becomes calm immediately. Therefore, it is possible to reduce scattering that affects repair work.

Further, since the flow of sewage is disturbed by the scattering prevention member, the flow velocity can be reduced. If the anti-scattering member is a protrusion, the root of the anti-scattering member has a predetermined curvature so that it is continuously connected to the adjacent anti-scattering member, so even if foreign matter that flows with the sewage comes into contact with it, it will not scatter. It is possible to prevent the force applied to the root portion of the member from being dispersed and the cracks from entering the root portion.

FIG. 2 shows a cross-sectional view of a buffer wear-resistant rubber plate 53 having a U-shaped gutter 50 provided with a scattering prevention member 54 as an example of a sewage facility. The numeral 57 indicates sewage, and the numeral 56 indicates foreign matter such as wood chips flowing with the sewage. When the foreign matter 56 comes into contact with the scattering prevention member 54 in such a state, since the root portion 58 is smoothly connected to the main body portion, the contact force is not concentrated at one point, and the scattering force shown by the dotted line Like the prevention member 54 ', it is dispersed and deformed as a whole. Therefore, the occurrence of cracks at the root portion 58 is prevented.

[0009]

【Example】

 An embodiment of the present invention will be described with reference to the drawings. 3A and 3B show a buffer and abrasion resistant rubber plate 10 according to the present invention, FIG. 3A is a top view thereof, and FIG. 3B is a sectional view taken along the line AA of FIG. 3A. The buffer abrasion-resistant rubber plate 10 includes an upper-layer rubber portion 11 that is abrasion-resistant rubber and a lower-layer rubber portion 12 that is adhered to or integrated with the upper-layer rubber portion 11, and the upper-layer rubber portion 11 has a plurality of substantially hemispheres. The protrusions 13 that are the shatterproof members are provided so as to be located at the apexes of the triangle (arranged in a close-packed shape). The upper rubber portion 11 has abrasion resistance, and it becomes possible to fix the buffer abrasion resistant rubber plate 10 to the sewage equipment with anchor bolts or the like through the plurality of bolt support holes 14 provided at predetermined intervals. ing.

The root portion 15 of the protrusion 13 provided on the upper rubber portion 11 is formed to have a predetermined curvature and is smoothly connected to the adjacent protrusion 13. The lower rubber portion 12 is provided with a reinforcing material 16 made of a chemical fiber such as nylon or polyester, or a metal wire such as an iron wire, a stainless wire or a piano wire, and is provided with a low extensibility and a high toughness. Is given.

Although the hemispherical projection 13 has been described as the shape of the scattering prevention member, the shape shown in FIGS. 4 to 7 may be used. Fig. 4 shows different heights of hemispherical protrusions, Fig. 5 has a trapezoidal (or triangular) cross section, and Fig. 6 has a sinusoidally changing cross section. 7 has a hemispherical recess. Further, the upper rubber portion 11 and the lower rubber portion 12 do not have to be two layers and may be a single layer, and the reinforcing material 16 is not essential.

Next, a method of using the above-mentioned cushioning wear resistant rubber plate 10 will be described with reference to FIG. In the figure, the impact wear rubber plates 10 are provided on the bottom surface of the terrace 64 and the bottom surface of the manhole 60, respectively. This terrace 64 is provided to relay sewage and weaken its momentum when the head is large. Normally, the sewage falls from the sewer pipes 61 and 62 toward the terrace 64, hits the impact and abrasion resistant rubber plate 10 to weaken the momentum, and at the same time, prevents scattering. After that, the sewage falls through the hole 64a toward the lower surface of the manhole 60, hits the impact abrasion resistant rubber plate 10 provided on the bottom surface of the manhole 60, and flows into the sewer pipe 63. By disposing the impact abrasion resistant rubber plate 10 at the location where the sewage falls, it is possible to prevent the sewage from scattering and prevent the sewage facility from being damaged.

Further, FIG. 9 shows a situation in which the sewage 32 is guided from the upper sewer pipe 30 to the lower sewer pipe 34 along the sewer 31. In such a place where there is a difference in elevation, the sewage 32 is increased in momentum at the lower part 35 of the sewage channel 31 and damages the sewage system. Therefore, the shock-resistant abrasion-resistant rubber plates 10a reduce the momentum of the sewage 32 coming out of the sewage pipe 30 located at a high position by providing the shock-abrasive abrasion-resistant rubber plates 10a, 10b on the upper part 36 and the lower part 35 of the sewer 31. In addition, the sewage 32, which has increased in power due to the fall, is received by the buffer wear resistant rubber plate 10b to reduce the impact on the sewage equipment.

[0014]

【effect】

 As described above, since the scattering prevention member is provided on the elastic rubber plate, the scattering direction of the sewage is dispersed and the scattering amount can be reduced. In addition, since the flow velocity of the sewage is suppressed by the anti-scattering member, it is possible to prevent damage due to abrasion of the sewage facility. Furthermore, when the anti-scattering member is a protrusion, its root smoothly connects with the adjacent protrusion, so that even if foreign matter flowing with the sewage comes into contact with the protrusion, the contact force will be dispersed without being concentrated, and as a result, The occurrence of cracks at the roots can be prevented and the reliability is improved in long-term use.

[Brief description of drawings]

FIG. 1 is a schematic view illustrating the principle of scattering prevention according to the present invention.

FIG. 2 is a schematic view for explaining the principle of preventing the occurrence of cracks in the scattering prevention member of the present invention.

3A and 3B are views of a buffer wear-resistant rubber plate applied to the description of the embodiment, in which FIG. 3A is a top view and FIG. 3B is a sectional view taken along the line AA of FIG.

FIG. 4 is a cross-sectional view of a buffer wear-resistant rubber plate having hemispherical scattering prevention members having different heights.

FIG. 5 is a cross-sectional view of a buffer wear-resistant rubber plate having a trapezoidal scattering prevention member.

FIG. 6 is a cross-sectional view of a buffer wear-resistant rubber plate having a scattering prevention member that changes sinusoidally.

FIG. 7 is a cross-sectional view of a buffer wear-resistant rubber plate having a scattering prevention member having a hemispherical recess.

FIG. 8 is a view in which the shatterproof member according to the present invention is applied to a manhole.

FIG. 9 is a view showing an example in which the cushioning wear resistant rubber plate according to the present invention is applied to a sewage facility.

FIG. 10 is a perspective view of a U-shaped gutter applied to the description of the conventional technique.

FIG. 11 is a cross-sectional view illustrating a problem of the conventional technique.

FIG. 12 is a cross-sectional view illustrating a problem of the conventional technique.

[Explanation of symbols]

 10 Buffer Wear-Resistant Rubber Plate 11 Upper Layer Rubber Part (Abrasion Resistant Rubber Plate) 12 Lower Layer Rubber Part 13 Substantially Hemispherical Protrusion (Splash Prevention Member) 14 Bolt Support Hole 15 Root of Protrusion 16 Reinforcement

Claims (4)

[Scope of utility model registration request] 1. A plurality of anti-scattering members that are disposed in a sewage facility to prevent the sewage from falling and to reduce the flow velocity of the sewage are provided on the surface of a wear-resistant rubber plate. Features shock-absorbing abrasion-resistant rubber plate. 2. The scattering prevention member is a substantially hemispherical protrusion,
The buffer wear-resistant rubber plate according to claim 1, wherein the cross-section is formed of any one of protrusions having a trapezoidal shape or a triangular shape. 3. The buffer wear-resistant rubber plate according to claim 1, wherein the scattering prevention member is formed of a substantially hemispherical recess. 4. The buffer wear-resistant rubber plate according to claim 1, wherein the root portion of the scattering prevention member has a predetermined curvature so as to be smoothly connected to the adjacent protrusions.