JP2926542B2 - Height adjustment device for manhole cover frame - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a height of a manhole cover receiving frame for manholes or other underground structures constructed on a slope, which can be easily adjusted in height and gradient according to the gradient of the ground. It relates to an adjusting device.

[0002]

2. Description of the Related Art An adjusting ring is mounted and fixed on a slanted wall of a manhole, and an embedded nut for screwing a lower end screw portion of a mounting nut is provided on the slanted wall, and a vertical hole for inserting the mounting nut through the adjusting ring is provided. In this case, screw an adjustment bolt into the mounting nut, insert a coil spring into the adjustment bolt,
The upper ends of the adjusting bolts are respectively penetrated through three bolt holes formed in the bottom plate of the lid receiving frame and projected to the upper surface of the bottom plate of the lid receiving frame, and the height and gradient of the lid receiving frame are aligned along the gradient of the ground. Screw the tightening nut to the adjustment bolt at the
From the other bolt holes drilled in the bottom plate of the lid receiving frame, fill the space between the bottom plate of the lid receiving frame and the adjustment ring with super-hard non-shrinkable mortar and fill it to make the height and gradient of the lid receiving frame equal to the height and gradient of the ground. In addition, a manhole cover frame can be constructed (FIG. 6).

[0003] However, when there is no embedded nut on the inclined wall and there is no bolt hole in the adjustment ring, the mounting nut and the adjustment bolt cannot be screwed in, so that the lid receiving frame cannot be attached to the adjustment ring. Because the structure of this manhole is more common in existing existing manholes, a hole must be made in the manhole adjustment ring and a new embedded nut must be provided to align the lid receiving frame with the slope of the road surface. There was a drawback that the receiving frame had to be bolted, requiring time and labor.

[0004]

SUMMARY OF THE INVENTION In view of the above-mentioned drawbacks, the present invention is directed to a method in which a tip of a bolt is placed on a flat upper end portion of an adjusting ring, and an intermediate portion of the bolt is uniformly spaced on an outer peripheral bottom plate of a lid receiving frame. Insert the adjustment nut attached to the bolt hole of the lid receiving frame, and rotate the bolt to align the upper end surface of the lid receiving frame with the slope of the sloping ground. An object of the present invention is to fill and fill a space formed between an adjusting ring, an outer frame seal, and an inner frame seal with ultra-fast curing non-shrink mortar (Filcon S).

[0005]

An adjusting ring 10 having an upper end surface 11 horizontally disposed thereon is mounted and fixed on the upper end portion of the inclined wall 1, and the center is made equal to the bottom plate 21 of the lid receiving frame 20 so as to have an equal interval. Of the plurality of bolt holes 22 held and held, three bolt holes 22 opened at equal distances are provided with adjusting nuts 24 each having a flange 23 provided in each of the three bolt holes 22 of the bottom plate 21. 21 from the back side of the nut 21 and the tightening nut 25
The adjustment nut 24 together with the flange 23 to the bottom plate 21,
A headed bolt (or a bolt formed with a cross-shaped hole, a square head, etc.) 30 is screwed to the screw 27 to be engraved on the inner periphery of the adjustment nut 24 tightened to the bottom plate 21.
A height adjustment device for a manhole cover receiving frame configured such that the front end portion 33 of the cover ring 20 is placed on the upper end surface 11 of the adjustment ring 10 and the upper end surface of the cover receiving frame 20 is inclined along the slope of the road.

[0006]

If combined upper surface or upper surface of the cover of the bottom plate 21 of the working lid receiving frame 20 to the gradient of the slope areas, or up lifting the lid is loaded unbalanced load to the lid at a vehicle passing through the upper surface of the lid receiving frame Dangers such as disengagement and failures occur. The present invention has been made to eliminate these accidents. Even if the upper end surface of the adjusting ring 10 is a horizontal surface, the adjusting nut 24 penetrated through the bottom plate 21 of the lid receiving frame 20 can be used. The tilt angle is equal to the tilt angle of 21.

[0007] Therefore, the bolt 30 vertically set on the adjustment nut 24 is also inclined at the same angle as the inclination of the lid receiving frame 20.
As described above, the tip 33 of the bolt 30 is
Since the bolt 30 is mounted on the upper end surface of the cover nut 0 and the screw 32 is strongly screwed into the female screw 27 of the adjusting nut 24, the slope of the set lid receiving frame 20 does not collapse. In this state, the outer frame seal 60 and the inner frame seal 5
0, an adjusting material (ultra-fast hardening non-shrink mortar) 80 is injected into the space 12 surrounded by the adjusting ring 10 and the lid receiving frame 20 from another bolt hole of the bottom plate 21 of the lid receiving frame 20, and the adjusting material solidifies. By fixing, the lid plate (not shown) placed on the upper end surface of the lid receiving frame 20 matches the gradient of the ground, and the lid vibrates and comes off from the lid receiving frame even when the vehicle tire passes over the lid. To prevent

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to the drawings. An adjusting ring 10 having an upper end surface 11 disposed horizontally is placed on the upper end portion of the inclined wall 1 of the manhole, and is fixed with a joint mortar 13. Reference numeral 20 denotes a lid receiving frame, on which an iron lid is fitted and mounted on the upper end surface 28, but is omitted in the drawing. 21 is a lid receiving frame 2
As shown in FIG. 1, twelve bolt holes 22 are formed at equal intervals on the outer periphery in the vertical direction, and the bolts 30 are attached at a distance of three by three.

Next, a structure in which the bolt 30 is assembled to the bottom plate 21 will be described. An adjustment nut 24 integrally provided with a flange 23 in the three bolt holes 22 is inserted upward from below to bring the flange 23 into contact with the lower surface of the bottom plate 21. A female screw hole 27 is formed in the center of the adjustment nut 24 in the axial direction, and the outer periphery of the adjustment nut 24 is in contact with the upper surface of the bottom plate 21 and a washer 26.
Are fitted. Then, the tightening nuts 25 are screwed to the adjustment nuts 24 from above the washers 26, and the bottom plate 21 is sandwiched between the flanges 23 of the adjustment nuts 24 and the washers 26.

Next, when the bolt 30 is inserted into the upper end opening of the adjusting nut 24 from its tip and the head 31 of the bolt is turned and screwed into the female screw hole 27, the bolt 30 engages with the female screw hole 27. While projecting downward. When the tip portion 33 of the bolt 30 comes into contact with the upper end surface 11 of the adjustment ring 10, the three bolts 30 are screwed in while being adjusted.
The height and slope of the vehicle are adjusted to the height and slope of the ground, and then stopped. Although the head 31 of the bolt 30 represents a hexagonal head in the drawing, a cross-shaped hole, a square head, or the like can be formed, and the bolt 30 can be turned using a wrench. Reference numeral 50 denotes an inner frame seal (pleated ring) fitted on the inner surface of the adjustment ring 10, and reference numeral 60 denotes an outer frame seal covering the outer circumference of the adjustment ring 10 and the bottom plate 21. In the hole 12 formed at the height of the lid receiving frame 20 in the space 12 formed by the adjusting ring 10 and the lid receiving frame 20, the unused hole 22 formed in the bottom plate 21 is hardened by using a measuring cup, a funnel or the like. Fill non-shrink mortar 80. The ultra-fast curing non-shrink mortar 80 solidifies in about 40 minutes after filling.

[0011]

According to the present invention, the height and gradient of the lid receiving frame and the cover plate placed on the lid receiving frame are determined even when the sloped wall has no embedded nut and the adjustment ring has no bolt hole. it is possible to match the, by placing the tip of the bolt to the end surface 11 on the adjustment ring, it is possible to integrally firmly joins the lid receiving frame and bolt and ultra fast curing non-shrink mortar and adjustment ring, the assembly Easy to assemble while observing the condition from the outside, fill the void with ultra-fast hardening non-shrink mortar, then set the bolt to the adjusting nut, or adjust the lid receiving frame even if you remove the bolt from the adjusting nut. The solid connection with the ring does not change and the level adjustment can be adjusted freely according to the gradient of the road surface.There is no deformation of the frame due to excessive tightening of the adjustment nut, and the cover plate rattles and jumps. Without fear of the root leakage, adjust the width there is a significant effect of the like can be freely fine-tune the adjustment width with only tighten the adjustment bolt, for example, 20mm from 95mm, with a wrench.

[Brief description of the drawings]

FIG. 1 is a plan view of a lid receiving frame used in the present invention.

FIG. 2 is an enlarged longitudinal side view of a part of a lid receiving frame used in the present invention.

FIG. 3 is an enlarged cross-sectional view of a part of a state in which a lid receiving frame is tilted and fixed to an adjustment ring with one bolt according to the present invention in accordance with a gradient of a road surface.

FIG. 4 is an enlarged cross-sectional view of a part of the state in which the adjustment ring and the lid receiving frame are tilted and fixed in accordance with the gradient of the road surface with one and the other bolts of the present invention.

FIG. 5 is an enlarged cross-sectional view of a part of the state where the adjustment ring and the lid receiving frame are inclined and fixed in accordance with the gradient of the road surface with one and other bolts of the present invention.

FIG. 6 is an enlarged longitudinal sectional side view of a coupling portion between a lid receiving frame, an adjustment nut, and an adjustment bolt.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sloping wall 10 Adjustment ring 11 Upper end surface of adjustment ring 12 Space part 20 Lid receiving frame 21 Bottom plate of lid receiving frame 22 Bolt hole 23 Flange 24 Adjusting nut 25 Tightening nut 26 Washer 27 Nut female thread 30 Bolt 31 Bolt head 32 Bolt The screw part

Claims (1)

(57) [Claims] 1. An adjusting ring (10) having an upper end surface (11) disposed horizontally is fixedly mounted on an upper end portion of a sloping wall (1), and its center is made equal to a bottom plate (21) of a lid receiving frame (20). Adjustment nuts (24) provided with flanges (23) in three bolt holes (22) formed at equal distances among a plurality of bolt holes (22) formed at equal intervals. ) Into the three bolt holes (22) of the bottom plate (21).
1) Insert from the back side of the above, said collar (23) and bottom plate (21)
Tightening nut (2) through a seat plate (26) in contact with the upper surface of
At 5), the adjustment nut (24) is tightened together with the flange (23) to the bottom plate (21), and the adjustment nut (24) is engraved on the inner periphery of the adjustment nut (24) tightened to the bottom plate (21). Bolts (or bolts with cross holes, square heads, etc.) (3
0) are screwed, and the tip (33) of the bolt (30) is placed on the upper end surface (11) of the adjustment ring (10), and the upper end surface of the lid receiving frame (20) is set along the slope of the road. A height adjustment device for a manhole cover receiving frame configured to be inclined.