JPH0549805U - Paving blocks - Google Patents

Abstract

(57) [Abstract] [Purpose] To facilitate the change of the position of the heating element such as the heating wire buried for snow melting and its repair. A pavement block comprising a pair of an upper member (12) and a lower member (14) that define an installation space (16) for a heating element.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a paving block used for paving roads, plazas, playgrounds, stadiums, and the like.

[0002]

[Prior Art]

 BACKGROUND ART Conventionally, pavement made by placing concrete on a roadbed on which a heating element such as a heating wire is placed is used as a measure against snow melting on a road such as a sidewalk in a cold region.

[0003]

[Problems to be solved by the device]

 By the way, it may be preferable to change the location of the heating element by observing the actual snowmelt condition on the road surface.If the heating element is cut due to an earthquake, repair it. There is a need to. However, in order to change the location of the heating element or repair it, it is necessary to peel off a part of the concrete layer that defines the road surface, which requires a great deal of labor. Furthermore, since the heating element is arranged below the layer of concrete, the entire layer of concrete must be heated in order to raise the temperature of the road surface, which consumes a large amount of heat energy. .. An object of the present invention is to facilitate changing the arrangement position of a heating element buried for snow melting and repairing it. Another object of the present invention is to reduce energy consumption of a heating element buried due to snow melting.

[0004]

[Means for Solving the Problem, Action and Effect of Invention]

 The present invention provides a paving block including a pair of upper and lower members that define an installation space for a heating element. According to the present invention, a large number of paving blocks can be laid out on the ground, and a heating element can be arranged inside the paving blocks to form a pavement capable of melting snow on a road or a plaza. Each pavement block consists of a pair of upper and lower members, and since both of these members define the installation space for the heating element, by separating the upper member from the lower member at any time, The arrangement position of the heating element can be easily changed or repaired. Further, since the heating element is arranged inside the pavement, the distance between the heating element and the pavement surface can be reduced as compared with the conventional example. Therefore, the portion to be additionally heated is reduced, and the energy consumption of the heating element can be saved.

The installation space of the heating element may be a groove provided in both the upper and lower members, the upper member, and the lower member. If the grooves are provided in a grid pattern, for example, when the heating element is a heating wire, it can be formed into a desired wiring shape by pushing the heating elements into arbitrary vertical and horizontal grooves.

Each of the upper and lower members can be formed of a molded product of resin concrete. The molded product of resin concrete has a large bending strength and excellent heat retention property, and thus is suitable as a load support and contributes to saving energy consumption of the heating element.

[0007]

【Example】

 Referring to FIG. 1, a paving block according to the present invention is indicated generally by the reference numeral 10. The pavement block 10 comprises a pair of upper member 12 and lower member 14 facing each other. The upper and lower members 12, 14 are an installation space 16 for a heating element (not shown) including a heating wire, a pipe through which a heating fluid is passed, and the like. Stipulate. The installation space 16 is provided in the lower member 14.

As shown in FIG. 2, a plurality of pavement blocks 10 are laid on the ground so that their side portions are in contact with each other. At this time, the heating elements are arranged so as to extend through the individual pavement blocks 10, and the pavement blocks 10 are heated by supplying power to the heating wires, supplying a heating medium to the pipes, and the like. An upper member 12 of a plurality of paving blocks 10 lined up forms a snow-melting paving surface for a road such as a sidewalk, a park plaza, and the like.

The illustrated pavement block 10 has a plate shape as a whole and has a rectangular plan shape. Instead of this example, it is possible to use one having a larger or smaller thickness, one having another polygonal plane shape, one having a corrugated side surface shape, or the like. Each of the members 12 and 14 constituting the pavement block 10 is formed by molding a mixture of resin concrete, that is, a thermoplastic or thermosetting synthetic resin, and an aggregate such as sand or gravel into a plate shape. Since each member 12 and 14 made of resin concrete has high bending strength and excellent heat retention, it is particularly suitable as a pavement material in a snowfall region. Of course, the upper and lower members 12 and 14 may be formed of cement concrete, a plastic material, a metal material, or the like, if necessary, instead of the illustrated example.

In the pavement, after arranging a plurality of lower members 14 on the ground and arranging them, the heating element is arranged in the installation space 16 of the lower member 14, and the upper member 12 is placed on the lower member 14 to install space. 16 is formed by covering. In order to position the upper member 12 with respect to the lower member 14, each of the upper member 12 and the lower member 14 is provided with a plurality of (four in the illustrated example) protrusions 15 and a recess 17 for receiving each protrusion 15. .. Further, due to the engagement between the protrusion 15 and the recess 17, the movement of the upper member 12 with respect to the lower member 14 is prevented. After the pavement is formed, the upper member 12 can be separated from the lower member 14 to change the arrangement position of the heating element or to repair it. Further, compared with the conventional example in which the heating element is installed below the pavement, the distance between the heating element and the pavement surface is small and the heating area is small, so the energy consumption of the heating element is small.

As shown in FIG. 3, the installation space 16 for the heating element may be a grid or a plurality of grooves 18 extending in the vertical and horizontal directions. According to this example, the heating element, for example, the heating wire, can be arranged on the lower member 14 by disposing it along the groove 18 and pushing it into the groove 18. By appropriately selecting the vertical and horizontal grooves 18, the wiring path of the heating wire can be set arbitrarily.

In order to prevent abrupt bending of the heating wire extending along the vertical and horizontal grooves 18, it is desirable that each side surface 19 at the intersection of the vertical and horizontal grooves 18 is curved, as in the illustrated example. The lower member 14 shown in the drawing is provided with a notch 20 on the peripheral edge thereof so that both lower members 14 form a single groove when the pair of lower members 14 are arranged side by side in contact with each other. Has been.

Instead of the grid-shaped grooves 18, the installation space 16 for the heating element is composed of, for example, a pair of short grooves open at a pair of opposite peripheral edges of the lower member 14, and a recess or a cavity connected to the grooves. can do. When the pair of lower members 14 are adjacent to each other, the ends of the grooves of the lower members 14 which are open to the peripheral edge are butted against each other and communicate with each other. Further, the crossing angle of the plurality of grooves intersecting with each other may be non-right angles instead of being right angles as in the illustrated example. Further, the groove may be one that extends curvilinearly, for example, as shown in FIG. 4, a groove 22 that extends in a wavy shape and opens in at least a pair of opposing peripheral edges of the lower member 14. When the pair of lower members 14 are adjacent to each other, the ends of the grooves 22 opening to the peripheral edge of both the lower members 14 abut each other and communicate with each other.

According to the example in which the installation space 16 is formed only by the groove, more contacts or contact areas are secured between the upper member 12 and the lower member 14. As a result, an external force such as an impact load applied to the upper member 12 that defines the pavement surface can be effectively dispersed in the lower member 14, and the heat generated by the heating element arranged in the lower member 14 can be distributed. Can be efficiently transmitted by the upper member 12.

The upper member 12 is heated by supplying electric power and heating fluid to the heating elements arranged in the grooves 18 and 22. When each member 12, 14 is molded from the resin concrete, cement concrete or the like, a wire mesh (not shown) can be embedded in order to enhance the thermal conductivity of the upper member 12 and to reinforce it. Alternatively, in order to enhance the thermal conductivity of the upper member 12, a powdery or granular aggregate having high thermal conductivity, such as aluminum, iron, or graphite, is used, and the thermal conductivity of the lower member 14 is increased. The amount of resin can be increased with the use of aggregate made of normal gravel for lowering. The space for installing the heating element may be provided in the upper member 12. Alternatively, the installation space can be provided in both the upper and lower members 12 and 14, and in this case, both members 12 and 14 jointly define the installation space.

[Brief description of drawings]

FIG. 1 is a front view of a paving block according to the present invention.

FIG. 2 is a plan view of a plurality of paving blocks laid out side by side.

FIG. 3 is a plan view of a lower member of the pavement block.

FIG. 4 is a plan view of another example of the lower member.

[Explanation of symbols]

 10 Pavement block 12 Upper member 14 Lower member 16 Installation space for heating element

Claims (4)

[Scope of utility model registration request] 1. A paving block comprising a pair of an upper member (12) and a lower member (14) defining a space (16) for installing a heating element. 2. The pavement according to claim 1, wherein the installation space includes a groove (18) provided in both upper and lower members, the upper member, and the lower member. block. 3. The groove (2) extends in a grid pattern.
The paving block described in. 4. The pavement block according to claim 1, wherein each of the upper and lower members is a molded product of resin concrete.