JPH057708U - Sidewalk temporary lid - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a temporary lid for a sidewalk which is excellent in drainage and walking sensation, has a low walking noise, is lightweight, is easy to dispose and remove, and can be repeatedly used and does not become a waste. [Structure] Particle size 1 to 10 formed by crushing elastic body such as rubber
Each of the mm chips 12 has a structure in which the chips 12 partially contact each other and are solidified with an adhesive to leave a gap 14 communicating with the contacted portion.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

  The present invention is designed to temporarily cover the sidewalk surface dug up for construction of gas pipes or water pipes. For a temporary cover that covers.

[0002]

[Prior art]

  Construction of gas pipes and water pipes buried in the sidewalk is done by digging the sidewalk. Since the construction of the After each thing, return the soil and temporarily cover the ground surface of the sidewalk with a temporary lid. Ensures safety and walking. Conventionally, as such a temporary lid Is made of asphalt, or iron, concrete or rubber. There is

[0003]   However, asphalt is made by heating and pressing when hardening the asphalt. Work is necessary, and it is necessary to crush and remove it when constructing again, Not only is the work troublesome, but the problem is that the crushed material becomes waste and it is difficult to dispose of it. . On the other hand, iron plates and concrete plates have poor drainage and are only slippery for pedestrians. However, there is a problem that the walking noise is loud. In addition, even with rubber plates, the drainage is bad and walking There is a problem that people are slippery.

[0004]

[Problems to be solved by the device]

  Therefore, the present invention is excellent in drainage and walking feeling and has a low walking noise. It is lightweight, easy to place and remove, and can be reused repeatedly to prevent waste. It is intended to provide a temporary road cover.

[0005]

[Means for Solving the Problems]

  In order to achieve the above-mentioned object, the present invention has a particle size of 1 to 1 formed by crushing an elastic body such as rubber. Adhesion between 10 mm chips with partial contact, leaving a gap that communicates with the non-contact part They formed a temporary sidewalk lid with a structure that was solidified into a plate or rod with an agent. Also, If strength is required, a net or linear reinforcement is embedded inside the temporary lid. It has been configured as described above.

[0006]

[Action]

  Rainwater, etc., that has fallen on the surface of the temporary lid will not stay in the non-contact area between the chips that make up the temporary lid. It reaches the lower surface of the temporary lid through the gap, and is finally absorbed by the ground. Therefore, Water is not accumulated on the surface of the temporary lid, and the chip made of crushed elastic body is compared to metal Since the friction resistance between the surface and the surface is large, the pedestrians can slip their feet due to the synergistic effect of both. Disappears. Further, the temporary lid of the present invention is such that the tip forming the temporary lid is made of an elastic material such as rubber. The walking noise is low and the cushioning properties are moderate when walking. Excellent feeling. Furthermore, the elastic body such as rubber that composes the chip is made of metal and concrete. It is lighter in weight and has a smaller apparent density due to the gaps between the chips. Therefore, the temporary lid is much lighter than the iron plate and the concrete plate. on the other hand, A temporary lid with a net-like (including lattice-like) or linear reinforcement embedded in it is Exhibits extremely high strength.

[0007]   In addition to rubber, urethane elastic is used as the elastic body that constitutes the chip in the present invention. Tomer, cork, etc. can be mentioned. Of course, the chips are made of different materials May be mixed. The elastic body that makes up the tip is used when walking on the temporary lid. It is preferable that the pedestrian's foot has an appropriate hardness so that it cannot be buried in the temporary lid. See you again The particle size of the particles is in the range of 1 to 10 mm, and the particles may be mixed in the range.

[0008]   As the chip adhesive, urethane adhesive or epoxy adhesive is used. Can be mentioned. A moisture-curing urethane system that cures due to moisture in the air The adhesive is preferable in terms of workability and adhesive strength.

[0009]   Further, the shape of the temporary lid in the present invention is not limited to a plate shape, but a rod shape (a circular section or a square section is used. It does not matter). If the rod-shaped temporary lids are in close contact with each other in parallel It is isolated and buried or placed on the ground surface of the sidewalk.

[0010]

【Example】

An embodiment of the present invention will be described below. FIG. 1 is a sectional view of a temporary sidewalk lid according to an embodiment of the present invention, FIG. 2 is an enlarged sectional view of part A thereof, and FIG. 3 is a sectional view showing the sidewalk temporary cover when in use. The illustrated temporary lid 10 includes 23 kg of chips 12 having a particle size of 1 to 2 mm obtained by crushing old tires and 2.3 kg of a moisture-curable urethane adhesive of 10% with respect to the weight of the chips. After mixing, the mixture is put into a mold (not shown) having an inner space of 600 × 1500 × 30 mm, and the mixture is heated and pressed at a pressing pressure of 0.1 kg / cm ² and a heating temperature of 170 ° C. for 20 minutes to bond the mixture. It is obtained by curing the agent. The pressing pressure varies depending on the material of the chip, but generally, the pressure is such that the chips come into partial contact with each other. Further, in order to accelerate the reaction hardening of the urethane adhesive, a catalyst, water, etc. may be sprayed into the mold prior to pressing.

In the temporary lid 10 formed in this manner, the chips 12 partially contact each other and adhere to each other at their contact portions, and the non-contact portion of the chip 12 communicates from one surface of the temporary lid to the other surface. Innumerable gaps 14 are formed. The physical properties of the temporary lid 10 are as follows: density 0.83 g / cm ³ (according to JIS K 6301), water permeability 3.9 × 10 ^-2 cm / sec (according to JIS A 1218), tensile strength 13.6 kgf / cm ^2. (JIS K 6301 compliant), elongation 110% (JIS K 6301 compliant) and had sufficient strength as a temporary sidewalk lid.

[0012]   The temporary lid 10 is used as shown in FIG. That is, due to interruption of construction work, etc. The temporary lid 10 is buried on the surface of the sidewalk 16 once covered with soil with its surface exposed. Be done. Reference numeral 18 in the figure denotes a concrete portion of the sidewalk left without construction. Na For fixing the temporary lid 10 between the concrete portion 18 and the temporary lid 10. Is filled with early strength cement 19.

[0013]   FIG. 4 is a sectional view of a temporary sidewalk lid 20 according to another embodiment of the present invention, and FIG. It is an expanded sectional view. The temporary lid 20 of this embodiment has a reinforcing body 22 embedded therein. Of. As the reinforcing body 22, a metal or plastic net-like body (lattice-like Or a linear body such as a wire is used. If it is a mesh, the mesh Make sure your eyes are larger than the grain size of the chips so that they do not interfere with the bonding of chips 24 Is preferred. Reference numeral 26 is a communicating gap formed in the non-contact portion of the chips 24. Is. In addition, the manufacture of the temporary lid 20 is performed by placing the mixture of the chip and the adhesive in the mold. Device is placed in the mold at the time of loading, and then the remaining chips and adhesive are mixed. The compound is put into a mold and heated and pressed.

[0014]

[Effect of device]

  Since the sidewalk temporary lid of the present invention has the above-mentioned configuration, water does not collect on the surface and It has the advantages of low walking noise and good walking feeling. Furthermore, compared to iron plates and concrete plates They are all lightweight, easy to handle, and have the advantage that they can be used repeatedly.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a temporary sidewalk lid according to an embodiment of the present invention.

FIG. 2 is an enlarged cross-sectional view of a portion A of FIG.

FIG. 3 is a cross-sectional view showing a sidewalk temporary lid according to an embodiment of the present invention when in use.

FIG. 4 is a cross-sectional view of a temporary sidewalk lid according to another embodiment of the present invention.

5 is an enlarged cross-sectional view of a B part in FIG.

[Explanation of symbols]

10 Sidewalk temporary lid 12 chips 14 Gap 16 sidewalks 18 Concrete part 20 Sidewalk temporary lid 22 Reinforcement 24 chips 26 Gap

Claims (2)

[Scope of utility model registration request] 1. A particle size of 1 to 1 formed by crushing an elastic body such as rubber.
Temporary lid for sidewalks, in which 10mm chips are in contact with each other and are fixed in a plate or rod shape with an adhesive leaving a gap communicating with the non-contact part. 2. The temporary sidewalk lid according to claim 1, wherein a net-like or linear reinforcement is embedded inside.