FI110199B - Road Construction Equipment - Google Patents

Abstract

The grating (1) comprises a frame (2) with a support surface (6) and on the periphery a ratchet point (8). A removable rigid cover (3) on the support surface has a springy bar (15) whose free end (16), located on the cover edge, mates with the ratchet point. The springy bar forms an angle of 60 degrees with the adjacent periphery of the cover, while its free end is framed by the rigid cover edge (12). The ratchet point and the free end of the bar each have a double ramp for locking and unlocking. The cover has a slot (18) in a location spaced from the bar, for the introduction of a tool for tipping the cover about a peripheral zone parallel to the bar. <IMAGE>

Description

110199

Road Construction Equipment

The present invention relates to a road construction device comprising a frame with a support surface and a barrier pattern at one point on the periphery thereof, and a removable rigid casing member which is in contact with the support surface and comprising a flexible barrier whose free end is arranged to cooperate with the barrier pattern. This arrangement of devices is particularly used in the upper devices of drain openings, such as street grids.

In road construction devices of the known type (see, for example, EP-A-0 280 872, Publication No. 10), the cover body comprises flexible barrier barriers which are poorly protected against side shocks or which form the periphery of the cover body. In this case, there is a risk of uncontrolled deformation of the flexible barrier barriers, which may cause loss of dependence of these deformations.

The object of the invention is to improve the locking security of the cover body.

For this purpose, the invention relates to a road construction device of the type described above, characterized in that this flexible barrier is rectilinear and at an angle of at least 60 ° with respect to the periphery of the casing, and is surrounded by a rigid portion.

'. : The road construction device according to the invention comprises one or more of the following features: - the barrier pattern and the free end of the elastic barrier each comprise a double ramp for locking and unlocking, the casing member comprising an expansion of this section at a distance distant from the elastic barrier for positioning this peripheral barrier in the direction of the flexible barrier; - this extension being parallel to the barrier adjacent the peripheral zone of the casing; . ·. : 30 - the extension comprising a notch formed in said peripheral zone; - the cover body comprising a lattice comprising a row of closure esters secured parallel to a rigid circumference, the closure barrier or each of which comprises a lattice closure the outer end of which is loose relative to the circumference of this rigid 35; 110199 2 - the device being substantially square or circular in shape, the frame comprising four barrier patterns spaced at 90 ° rotation about the vertical central axis of the device such that the top member can be positioned at least two angular positions 90 ° apart.

5 - with the device generally being a rectangular triangle, with a spring barrier opening perpendicular to the right angle side of the casing; the device being generally in the form of an isosceles triangle with an angle of at least 60 °, the elastic closing bar being parallel to the base 10 of this triangle and opening to the oblique side of the triangle; - the cover body comprising two opposing elastic barrier barriers; - both elastic barrier barriers being extensions of one another, their median vertical plane extending mainly through the vertical central axis of the device; - the device being substantially rectangular or square in shape, with both resilient closures being disposed at a distance from the vertical central axis of the device and disposed symmetrically with respect to this central axis.

20 In the following, examples of application of the invention will be described below. with reference to the drawings, in which: - Fig. 1 is a plan view of a road construction device according to the invention; Fig. 2 is a partial sectional view taken along the line II-II in Fig. 1: 25 taken; Figure 3 is a partial sectional view taken along the line III-III in Figure 1; Figure 4 is a plan view of a variant; Figure 5 is a plan view of another variation. ,: 30 frames; Figure 6 is a plan view of a cover piece engaging the frame of Figure 5; and Figs. 7 and 9 are plan views of the cover body of three other road construction devices of the invention.

* I

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The road construction device shown in Figs. 1-3 comprises a drainage closure and cover device, which is generally square. This device comprises two pieces of flexible cast iron, namely a support frame 2 and a removable and closable rigid grate 3.

The frame 2 includes a retaining plate 4 from which a vertical sheath 5 protrudes in the vicinity of the center between the outer and inner ends of this plate. The plate portion inside the sheath 5 forms a horizontal support collar continuous with the exception of two almost diametrically opposed slots 7. As shown in Figures 1 and 3, a stiff locking strap 8 protrudes from the collar 6 on one side (downwardly cat-10 in Figure 1) width and the height of the sheath 5. The surface facing this slit 7 facing the slot 7 is convex in the form of a very open V and is provided with an upwardly sloping upper ramp 9 and a protruding lower ramp 10. The ramp 9 is preferably inclined vertically than ramp 10, with typical incline-15 values of 20 ° and 30, respectively. °. Referring to Figure 1, the bulges 8 are located on the same horizontal line just below the vertical median plane P of the device 1.

The grid 3 comprises a top plate 11, which is square in shape, the sheath 5 forming a si-20 hash side just below it. This plate, the upper surface of which is provided with possibly retaining embossing. defects (not shown) comprise a peripheral edge 12, two longitudinal beams 13 vertically oriented in Fig. 1 and arranged to run along the panel's third lines, and at regular intervals in horizontal beams 14 which are horizontal in Fig. 1. The longitudinal and transverse beams -:: 25 raw barrier barriers. Border 12 is continuous except for two interruptions. The transverse beam 14, which thus includes a vertical plane P, terminates on each side of these interruptions defined by two free-end barrier barriers 15. In their base part (Figures 1 and 3), these two closing barriers comprise two ramps adjacent to the frame thickness 8. : 30 shoulder 16, which is quite open V-shaped. The upper shoulder of the shoulder has the same slope as the lower ramp of the buttocks 8, while the lower shoulder of the shoulder has the same slope as this at the upper ramps of the buttocks 9.

At the end of its circumference, the rim 12 comprises a downwardly directed vertical jacket 17 (Fig. 2). It can be seen from Fig. 3 that there is shown a flexible closing barrier 15 of the grate itself.

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The grate is inserted into the frame quite simply by positioning the collar 6 on the rim of the sheath 17 in the direction of the transverse beams 14 and rocking the grille around this rim. At the end of this rocking movement, and possibly subject to impact, the grating, when the end of the barrier 15 comes into contact with the ribs 8, cooperates with the lower ramps of the ramps to resiliently push the barrier 15 so that after the V Thus, the grate is locked in place by cooperating between the ramps 10 and the upper ramps of the recesses 16, as shown in Figure 3, with the sheath 17 in contact with the collar 6.

In practice, the dimensioning is such that the closing barriers do not fully return to the rest position when locked. As a result, a force containing a horizontal and a vertical component is applied to each blocking bar, squeezing it against the support collar 6.

for retraction 15 of the grid is set to a suitable tool, for example, percussion drill, the grating one intermediate gap 14 below, for example, just the cross bar in the intermediate gap 18, and this tool is swung shut barrier 15 perpendicular to the plane, for example, downwardly in Figure 1 of the arrow F as shown. The lifting effect removes both barrier barriers effortlessly and then returns flexibly to a rest position.

Thus, the flexible barrier barriers 15 automatically ensure that the grid is closed and opened without having to be directly affected, which could damage them. In any case, the deformation of these barrier barriers will remain limited as the bypasses 8 are bypassed, whereby there is no risk of deformation beyond their elastic limit.

In addition, as the vehicle brakes on the grid of Figure 1, the tension of the barrier barriers decreases as the vehicle moves upward, their elastic tension increases by a small value limited by the small play between the rim 12 and the jacket 5 as the vehicle moves downward.

30 It should also be borne in mind that the setting of flexible barrier bars: perpendicular to the respective edges and the presence of bulges 8 and shoulders 16 make the operation of the locking device accurate regardless of the grid dimensions.

The variation of Fig. 4 differs from the embodiment of Figs. 1-3 in that the slots 7 and bulges 8 of the frame are 110199 5 symmetrical with respect to the vertical central axis 19 of the frame, thus being positioned end to end. Similarly, the shoulders of the resilient barrier barriers 15 are directed relative to one another for cooperating with each of the recesses 8.

Thus, the grate can be placed in a frame in two opposed positions, i.e. 180 ° apart about the axis 19.

In this variant, the braking of both vehicles in both directions of travel slightly relieves the barrier 15 and, on the other hand, easily increases the elastic load 10 in the manner of the aforementioned clearance.

The variant of Figures 5 and 6 differs from the embodiment of Figure 4 in the following ratios.

On the one hand, the collar 6 comprises a slot 7 on each side and a rib 8, whereby the combinations formed by the slots and the ribs are spaced 90 ° in a rotational movement about the central axis.

On the other hand, as shown in Figure 6, both the resilient closing barriers 15 and their shoulders 16 are also symmetrical with respect to the vertical axis 19. However, in this variation, each closing barrier is at a distance from the axis 19 which passes through the center of the grille center slot. This means in practice that the grid includes a plurality of pairs of cross beams 14, in this example eight pairs.

In addition, the upper and lower slits of the grille have been removed and corresponding arrangements have been made, i.e. a rectangular slot 20 is formed in the direction of the elastic closing barriers 15 in the center of both edges of the grate. The grid 25 is opened by placing a suitable tool and then positioning this tool in a plane perpendicular to the resilient closing barriers 15.

In this variation, the grille can be set at any quarter of 30 positions separated by a 90 ° rotation angle, allowing the grid spacers to be oriented in the desired direction according to water flow and vehicle movement without having to search the frame index for its airtight closure. when indexing it.

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From the foregoing, it is clear that the combination of the arrangements of Figures 1 and 5 permits the grating to be set in only two positions separated by an angle of 90 °.

Figures 7-9 show grates 3 having a shape different from that of a rectangle 5 or a square.

The grid of Fig. 7 is in the form of a rectangular triangle and is provided with intermediate holes and closures which are made parallel to one side of a right angle. One barrier 15 is parallel to this side and opens toward the center of another side of a right angle.

The grid of Fig. 8 is in the form of an isosceles triangle with an angle of at least 60 °. The slits and fixed closures are parallel to the base of this triangle. The grille comprises two opposing elastic closures 15 which are parallel to this base and open correspondingly to the center of the oblique sides of the triangle.

The grid of Fig. 9 is circular in shape and is provided with spacers and fixed closure barriers in the direction of the diametrical middle plane Q. It comprises two diametrically opposed resilient barrier barriers 15, which include a plane Q opening on the periphery of the grid.

In all of the embodiments described above, the elastic barrier barrier or each of them, when straight and surrounded by a rigid portion of the grille and opening at an angle of 60 ° (Fig. 8) to 90 ° (Figs. 1 and 7-9), is well protected from lateral impacts. and cannot bend under the impact of this ring.

Claims (11)

A street bottom device (1) of the type comprising a frame (2) provided with a support surface (6), and at least one point of its periphery 5 with a second relief (8) and a rigid removable covering part (3), which is adapted to abut against the support surface (6) and comprising at least one elastic rod (15), the free end (16) of which is located at the edge of the covering part, adapted to cooperate with the barrier relief, characterized in that the elastic rod (15) forms an angle of at least 60 ° to the adjacent periphery of the cover portion (3), and its free end is framed by the rigid portion of the edge (12) thereof. 2. Device according to claim 1, characterized by the detent relief (8) and the free end (16) of the elastic rod (15) each comprising a double ramp (9, 10) for reading and unloading, and of the covering part 15 (3), a location separate from the elastic rod (15) includes an insertion recess (18; 20) for a tool for tipping this portion about one parallel to this elastic rod! peripheral zone. Device according to claim 2, characterized in that the recess (20) is close to a peripheral zone of the covering part (3) which is parallel to the elastic rod (15). Device according to claim 3, characterized in that the recess (20) is a cut-out, which is accommodated in said peripheral zone. Apparatus according to any one of claims 1-4, wherein the covering part (3) consists of a grid comprising a series of parallel rods (14) joined by a rigid circumference (12) through a rigid circumference (12), - characterized in that the elastic rod or each elastic rod (15) is a rod in this grid, the outer end of which is released on both sides in relation to the rigid circumference (12). Apparatus according to any one of claims 1 to 5, in particular of square or circular shape, characterized in that the frame (2) comprises four locking reliefs (8) which are derived from each other by 90 ° rotation about the vertical central axis of the device ( 19), so that the cover portion (39 can be positioned in at least two from each other with 90 ° angles offset directions. Device according to any one of claims 1 to 5, of a generally right-angled triangle shape, characterized in that the elastic rod (15) opens on one side of the right angle of the covering part (3). 110199 10 Apparatus according to any one of claims 1 to 5, of a generally similar triangular shape, whose point angle is at least 60 °, characterized by the elastic rod (15) parallel to the base side of this triangle and ending on the inclined edge of the triangle. Device according to any of claims 1 to 6 and 8, characterized in that the covering part (3) comprises two elastic rods (15) oriented in opposite directions. 10. Apparatus according to claim 8, characterized in that the two elastic rods (15) are in the arrangement of each other, their vertical center axis substantially extending through the vertical central axis (19) of the apparatus. Device according to claim 8, in particular of generally rectangular or square shape, characterized in that the two elastic rods (15) are offset relative to the vertical central axis (19) of the device and symmetrical with respect to this central axis. 15 <»