JP3011287U - Paving blocks - Google Patents

Abstract

(57) [Summary] [Purpose] The rubber slab on the surface will not come off,
Obtain paving blocks that are slippery and do not create dangerous snow pressure or freezing conditions. [Structure] A metal plate 1 having a fixed planar shape, in which an anchor 5 is vertically fixed to a lower surface, and a plurality of grooves 3 on the upper surface, and having the same shape as the metal plate, a lower surface is bonded onto the upper surface of the metal plate And a thick concrete base layer 4 having the same shape as the metal plate and having anchors 5 of the metal plate embedded and the metal plate 1 fixed on the upper surface.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to paving blocks for paving roads and sidewalks laid side by side.

[0002]

[Prior art]

 A paving block in which a rubber plate having a rectangular planar shape is fixed to the upper surface of a concrete base layer having the same shape with an adhesive is known from JP-A-5-285914.

[0003]

[Problems to be solved by the device]

 In the conventional block mentioned above, a rubber plate is adhered to the upper surface of the concrete base layer, but the adhesive strength between the rubber and concrete is low, so when paving by laying it on the roads such as intersections where automobiles often turn left and right, The tires of cars turning left and right rub against the rubber plate due to the unbalanced load, and the rubber plate peels off from the concrete base layer. In addition, since the surface of the rubber plate is flat, the snow that has fallen on it is pressed by the tires of the car in a cold region, resulting in a very slippery pressure snow condition, causing the car to slip and cause an accident or crossing. Pedestrians may fall and get injured.

[0004]

[Means for Solving the Problems]

 The present invention was developed to solve the above-mentioned problems of conventional pavement concrete blocks, and has a metal plate with anchors fixed on the lower surface and a non-slip groove on the upper surface. It consists of a thick rubber plate that has the same shape as the metal plate and the lower surface is bonded to the upper surface of the metal plate, and a thick concrete base layer that has the same shape as the metal plate and has the anchor of the metal plate embedded and the metal plate fixed to the upper surface. Is characterized by.

The anchor may be a metal plate, in which case it is preferable to provide one or a plurality of openings in the metal plate or to provide a right-angled bent piece at the lower end. The anchor may be a metal rod, and in that case, a deformed round steel for a reinforcing bar having ribs and nodes is preferable. The anchor may be a U-shaped metal rod or a metal strip having a right-angled bent piece at the lower end.

[0006]

【Example】

 In the illustrated embodiment, 1 is a rectangular metal plate made of iron plate having a thickness of about 2.5 mm, a long side of about 200 mm, and a short side of about 100 mm, and 2 is wear resistance obtained by mixing natural rubber and synthetic rubber. Rubber having a high resistance and excellent tear strength, for example, a thickness of about 15 mm, a groove 3 for preventing slippage on the upper surface, and a rectangular rubber of the same size fixed on the metal plate 1 with a strong adhesive. A thick plate 4 is a rectangle having the same size as the metal plate. For example, a concrete base layer having a thickness of about 65 mm is fixed vertically to the lower surface of the metal plate by welding or the like, and indicates an anchor buried by the concrete base layer.

The anchor shown in FIGS. 1 to 3 is made of, for example, a metal plate (iron plate) 6 having a thickness of about 3 mm, and is welded downward to the lower surface of the metal plate along the long side so as to divide the metal plate into two parts. There is. The metal plate 6 has a downward length of about 40 mm, has two semicircular cutouts 7 at both ends, and has openings 8 formed of two holes at equal intervals between the cutouts at both ends. The diameter of the two holes and the diameter of the two notches 7 at both ends are about 30 mm. Since the concrete C of the base layer 4 fills the notches 7 and holes of the metal plate and is solidified, the bonding strength between the metal plate 1 and the concrete base layer 4 is extremely large. A large number of grooves 3 each having a groove width of about 7 mm and a depth of about 7 mm are provided in parallel on the upper surface of the rubber thick plate at intervals of about 10 mm. The groove 3 has an angle α of about 60 ° with respect to the long side of the thick rubber plate, but this angle is arbitrary.

In order to form this paving block, the rubber plate 2 is bonded with an adhesive to the upper surface of the metal plate 1 to which the anchor 5 is welded, with the groove 3 facing upward, and as shown in FIG. The slump value 0 is set in the mold hole 12 in which the anchor 5 stands up, by placing the rubber thick plate 2 on the pallet 13 which closes the bottom of the mold hole 12 penetrating vertically in the frame 11 for molding the base layer 4. A predetermined amount of kneaded concrete is put under vibration by the vibrators 14 and filled, and the vibration is continued after the filling, and then the press device 15 is lowered, and the press plate 16 at the lower end lowers the concrete and metal plate in the mold cavity. While pressing the rubber slab to increase the density of the concrete, the height of the product is adjusted to the specified level, then the operation of the vibrator is stopped, the pressing device is further lowered, and the pallet 13 is also lowered at the same time to pallet the product. Wh On the mold.

The anchors of the embodiments shown in FIGS. 4, 5 and 6 also include a metal plate 6 which is welded downward along the long side of the lower surface of the metal plate in a state where the metal plate is divided into two parts. The metal plate of FIG. 4 has one large opening 8 that is slightly smaller than the plate but is similar. In addition, in the case of FIG. 5, in addition to the metal plate 6 having the same large opening 8 as in FIG. 4, there is also another metal plate 6'fixed in an orthogonal state to the end of the metal plate. There is also one large opening 8 ', which is slightly smaller but similar in shape. Since the concrete of the base layer 4 fills the openings 8, 8'of the metal plate and hardens, the bonding strength between the metal plate 1 and the concrete base layer 4 becomes larger than that in the embodiment of FIGS. The metal plate 6 of the anchor of the embodiment shown in FIG. 6 does not have an opening, but has a bent piece 9 having a substantially right angle shape at the lower end. The bent piece 9 provides the bonding strength between the metal plate 1 and the concrete base layer 4.

The anchor 5 of the embodiment shown in FIGS. 7 and 8 is made of a metal rod 21. In FIG. 7, two metal rods 21 are vertically welded downward. These two metal rods are deformed round steel bars with ribs and ribs used in concrete construction to obtain the bonding strength between the metal plate and the concrete base layer. Further, in the embodiment of FIG. 8, the metal rod 21 is bent in a U shape, and both ends of the bending are fixed to the lower surface of the metal plate 1 by welding. Since the concrete of the base layer fills the inside of the U-shaped metal rod and hardens, sufficient bond strength can be obtained between the metal plate and the concrete base layer. The welding position of the metal rod member to the lower surface of the metal plate in both examples is on the line dividing the metal plate.

The anchor of the embodiment of FIG. 9 comprises a metal strip 22. In the figure, two metal strips are welded downward on the line that bisects the metal plate. A right-angled bent piece 23 is provided at the lower end of each metal strip. This bent piece 23 provides the necessary bond strength between the metal plate and the concrete base layer.

Although the anti-slip groove 3 formed on the upper surface of the thick rubber plate is shown as an obliquely parallel one in FIG. 2, it exhibits an anti-slip effect and the heel of a women's high heel shoe enters the groove. Any groove pattern may be used as long as it is inexpensive, for example, a groove pattern similar to the groove on the tread surface of the tire of the vehicle shown in FIG.

In the illustrated embodiment, the planar shape of the metal plate, the rubber slab, and the concrete base layer is rectangular, and the number of installations per 1 m ² of the road is 40, but the planar shape and the size are Is optional.

[0014]

[Effect of device]

 For the adhesion between rubber and a metal plate, a strong adhesive that does not separate the rubber from the metal plate is commercially available (trade name: Chemlok, manufacturer name: Far far East Inc.). Since the rubber plate 2 of the paving block of the present invention is adhered to the upper surface of the metal plate 1 with such an adhesive, it is laid at an intersection or the like and the tire of the automobile is rubbed by the frictional force of an unbalanced load. Even if you rub the plank, the rubber plank will never come off.

The metal plate 1 is fixed to the upper surface of the base layer by embedding an anchor 5 fixed to the lower surface in the concrete base layer 4. The anchor has openings, right-angled bent pieces, ribs, and knots. Therefore, since the concrete of the base layer grips the anchor strongly, the bonding strength between the metal plate 1 and the concrete base layer 7 is also very large.

The rubber slab 2 has a large number of grooves 3 on its upper surface. This groove 3 acts as an anti-skid for automobile tires and pedestrian shoes, and in the event of snow and freezing during winter, the ridges 3'that separate the groove 3 by the unbalanced load received from the tires of automobiles running on it. Deforms, and the elasticity and elasticity of the rubber causes the snow clogged in the groove 3 to be pressed and crushed, and pushed out of the groove. Therefore, the snow layer on the rubber slab can be easily peeled off and crushed, so that it is not slippery and dangerous in a snow-pressed condition or a frozen condition. This will prevent car slip accidents and pedestrian fall accidents.

[Brief description of drawings]

FIG. 1 is a side view of a first embodiment of a block of the present invention having a cross section of base layer concrete.

2 is a perspective view of the block of FIG. 1. FIG.

FIG. 3 is an explanatory diagram showing a molding state of a block.

FIG. 4 is a perspective view of a second embodiment of the block of the present invention.

FIG. 5 is a perspective view of a third embodiment of the block of the present invention.

FIG. 6 is a perspective view of a fourth embodiment of the block of the present invention.

FIG. 7 is a perspective view of a fifth embodiment of the block of the present invention.

FIG. 8 is a perspective view of a sixth embodiment of the block of the present invention.

FIG. 9 is a perspective view of a seventh embodiment of the block of the present invention.

FIG. 10 is a perspective view of a second example of a groove for slip prevention of a thick rubber plate.

[Explanation of symbols]

 1 Metal Plate 2 Rubber Thick Plate 3 Groove 3'Protrusions Separated by Groove 4 Concrete Base Layer 5 Anchor 6 Metal Plate (Anchor) 7 Notch 8 Opening 9 Bending Piece 11 Form 12 Form 13 Pallet 14 Vibrator 15 Press Equipment 16 Press Plate 21 Metal Rod (Anchor) 22 Metal Strip (Anchor)

Claims (8)

[Scope of utility model registration request] 1. A metal plate having an anchor fixed to a lower surface, a slip preventing groove on the upper surface, and a rubber thick plate having the same shape as the metal plate and having the lower surface bonded to the upper surface of the metal plate, and the metal. A pavement block that has the same shape as a plate, and consists of a thick concrete base layer in which the metal plate anchor is embedded and the metal plate is fixed to the upper surface. 2. The paving block according to claim 1, wherein the anchor is made of a metal plate fixed vertically to a lower surface of the metal plate. 3. The paving block according to claim 2, wherein the metal plate anchor fixed vertically to the lower surface of the metal plate has one or a plurality of openings. 4. The paving block according to claim 2, wherein the metal plate anchor fixed vertically to the lower surface of the metal plate has a right-angled bent piece at the lower end portion. 5. The paving block according to claim 1, wherein the anchor is made of a metal rod member that is vertically fixed to the lower surface of the metal plate. 6. The paving block according to claim 5, wherein the metal rod is deformed round steel for reinforcing bars. 7. The paving block according to claim 1, wherein the anchor is a U-shaped metal rod member that is vertically fixed to the lower surface of the metal plate. 8. The paving block according to claim 1, wherein the anchor comprises a metal strip plate fixed vertically to a lower surface of the metal plate, and the metal strip plate has a right-angled bent piece at a lower end portion thereof. A paving block characterized by.