JP3067538U - Manhole height adjustment ring - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To reduce the construction period and safety by enabling a height adjusting ring to be lifted at three points by a wire. SOLUTION: An inclined wall block 2 in which a fixing bolt 21 is erected at a position obtained by dividing a circumferential direction of an upper end surface into a plurality at equal intervals.
A height adjusting ring 3 mounted on the upper surface of the sloping wall block 2. The height adjusting ring 3 is provided with a screw hole 32a at an almost middle height position at the position of the fixing bolt 21 of the inclined wall block 2. Is welded with a nut 32 arranged at a right angle, and a pipe 31 having a diameter through which the bolt 21 can be inserted is arranged and molded.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a manhole height adjusting ring that enables a manhole height adjusting ring to be lifted at three points by a wire.

[0002]

[Prior art]

 The conventional manhole height adjustment ring has only three holes in the circumferential direction to fix the adjustment ring, so the height of the connecting bolt for fixing the sloping wall block already installed is high. When installing the height adjustment ring, the height adjustment ring, which is about 60 kg to 90 kg, was lifted by hand.

[0003]

[Problems to be solved by the invention]

 However, the conventional technique has the following problems. According to the above-mentioned conventional technology, when the height adjustment ring is lifted by a human hand on the sloping wall block and fixed, the finger is pinched between the sloping wall block and the height adjustment ring. There is a problem that it frequently occurs. In order to prevent such an accident from occurring, as shown in FIG. 7, a suspending insert e is buried in the outer peripheral side surface of the manhole height adjusting ring 3, or as shown in FIG. It was embedded in the end face and hung with a wire. However, the method of embedding the suspending insert e on the outer peripheral side of the manhole height adjusting ring 3 requires a sufficient strength since the anchor length of the insert e is small in the thickness of the manhole height adjusting ring 3. There is a problem that safety cannot be obtained due to lack of safety. In addition, the method of embedding the suspending insert e in the upper end face requires an anchor length and a considerable thickness, which increases the product price. In any case, three mounting holes f and three inserts e for lifting are required to fix the height adjusting ring, which is troublesome in terms of manufacturing and requires a lot of time for production. is there. In addition, there is some digging around the manhole to install it. Therefore, since the height adjustment ring 3 is installed after the scaffolding plate is passed over the excavated portion, there is a problem that the scaffolding condition is poor and the construction is performed in a very dangerous state. The purpose of the present invention is to provide a ring for manhole height adjustment, which enables the height adjustment ring to be lifted up to three points with wires in order to solve the above problems, thereby shortening the construction period and ensuring safety. And

[0004]

[Means for Solving the Problems]

 In order to achieve the above object, the manhole height adjusting ring according to the first aspect of the present invention is a sloped wall block in which a fixing bolt is erected at a position obtained by dividing a circumferential direction of an upper end surface into a plurality at equal intervals. A height adjusting ring mounted on the upper surface of the height adjusting ring, wherein a screw hole is disposed at a right angle outward at a substantially intermediate height position at a fixing bolt position of the inclined wall block. The method is characterized in that a nut is welded, and a pipe having a diameter through which the bolt can be inserted is arranged and molded.

Further, the pipe according to claim 1 is provided at a position where the circumference of the height adjusting ring of the manhole is divided into three.

The manhole height adjusting ring according to the third aspect of the present invention is mounted on an upper surface of a sloping wall block in which a fixing bolt is erected at a position obtained by dividing a circumferential direction of an upper end surface into a plurality at equal intervals. A height adjusting ring, wherein a nut having a screw hole arranged at a right angle outward at a substantially intermediate height position is welded to the fixing bolt position of the swash wall block, A hanging fitting is fastened to the nut of the height adjusting ring of the manhole formed by arranging a pipe having a diameter through which the bolt can be inserted, with a fixing bolt.

[0007]

[Action]

 When placing the height adjustment ring on the sloping wall block, attach a hanging bracket to the opening of the nut and screw the fixing bolt onto the nut to secure it. After attaching the wires to the three points of the height adjustment ring, hang them stably with a crane and place the adjustment ring on the sloping block to secure it.

[0008]

[Embodiment of the invention]

 1 to 6 relate to an embodiment of the present invention. It relates to a height adjusting ring 3 of a receiving frame (not shown) mounted on the upper surface of the sloping wall block 2 in which fixing bolts 21 are erected at a position where the circumferential direction of the upper end face is divided into a plurality at equal intervals. is there. At a position corresponding to the fixing bolt 21 of the sloping wall block 2 of the height adjusting ring 3, a nut 32 having a screw hole 32 a disposed at a right angle outward at a substantially middle height position is substantially at a middle height position. It is welded (see FIGS. 1 and 2) and molded by placing a pipe 31 having a diameter through which the fixing bolt 21 can be inserted. The thickness of the height adjusting ring 3 is generally 100 mm and 150 mm. The pipe 31 is preferably made of steel having an inner diameter of about 32 mm. In addition, the pipe 31 of claim 1 can be hung stably by the crane 8 in a state where the height adjusting ring 3 is supported at three points by the wire 7 so that the circumference of the height adjusting ring 3 is divided into three parts. (See FIGS. 3 and 5). The hanging bracket 34 is attached to a side surface of the height adjusting ring 3 having the above-described configuration, and a metal hanging portion 37 is disposed at an upper portion thereof. A mounting plate 38 provided with a hole 36 having a slightly larger inner diameter is arranged. Then, in the hanging metal fittings 34, the holes 36 of the hanging metal fittings 34 are aligned with the opening surfaces of the nuts 32 of the height adjusting ring 3, and the bolts 35 are screwed into the nuts 32 and fastened and fixed. At the time of molding the height adjusting ring 3, a plastics cap 33 is fitted into the opening of the nut 32 in order to prevent the concrete paste from entering the screw hole 32 a of the nut 32. After that, the nut 32 is fixed to a formwork (not shown) at a position obtained by dividing the circumference of the height adjusting ring 3 into three parts, and then a concrete is cast and molded. A plastic cap 33 is fitted on a nut 32 of the height adjusting ring 3 when taken out of the mold. In order to prevent foreign matter from entering the screw hole 32 a of the nut 32. The cap 33 should not be removed and should be removed when constructing the manhole. When mounting the height adjusting ring 3 on the sloping wall block 2, the hanging metal fitting 34 is aligned with the opening surface of the nut 32, the fixing bolt 35 is screwed into the nut 32, and the height is tightened. Attach wires 7 at three positions on the adjusting ring 3 and stably suspend it with a crane 8, move it onto the sloping block 2 and place it for construction.

[0009]

[Effect of the invention]

 Since the present invention is configured as described above, the following effects can be obtained. (1) The pipe for fixing to the ramp block and the nut for attaching the hanging bracket are integrally and simultaneously manufactured on the peripheral surface of the height-adjusting ring using a formwork. The ring does not break and can be stably fixed by placing it on the sloping block with a wire. (2) Since the nut for screwing the bolts for fixing the suspension fittings is welded to the pipe, the suspension fittings can be easily attached and the height adjustment ring can be lifted with a wire. (3) Since the conventional height adjustment ring is not hung by wire, when installing the height adjustment ring, the height adjustment ring, which is about 60 kg to 90 kg, was lifted by hand. In the present invention, since the hanging bracket is attached immediately, the height adjusting ring can be mounted on the inclined wall block by hanging with a wire. Therefore, there is no accident of pinching a finger between the ramp block and the height adjustment ring. (4) When installing the manhole, there is a digging around the manhole. Since the height adjustment ring can be hung with a wire and placed on the sloping wall block, the unstable work of passing the scaffolding plate over the extra area and manually installing the heavy height adjustment ring by hand is required. It becomes unnecessary. Therefore, safety of construction and shortening of construction period can be achieved.

[Brief description of the drawings]

FIG. 1 is an explanatory view of an embodiment of the present invention in which a nut is attached to a pipe.

FIG. 2 is a sectional view taken along line AA of FIG. 3;

FIG. 3 is a plan view showing a state in which a height adjusting ring is mounted on the inclined wall block according to the present invention.

FIG. 4 is a mounting state diagram when a height adjusting ring is mounted on the manhole body of the present invention.

FIG. 5 is a perspective view when the height adjusting ring of the present invention is suspended by a wire.

FIG. 6A is a plan view of the height adjusting ring of the present invention, and FIG. 6B is a right side view of the height adjusting ring of the present invention.

7A is a plan view of a conventional height adjusting ring, and FIG. 7B is a right side view of the conventional height adjusting ring.

8A is a plan view of a conventional height adjusting ring, and FIG. 8B is a right side view of the conventional height adjusting ring.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Manhole 2 Sloping wall block 21 Fixing bolt 3 Height adjusting ring 31 Pipe 32 Nut 33 Cap 4 Straight wall block 5 Lower block 6 Inverter

Claims (3)

[Utility model registration claims] 1. A height adjusting ring to be mounted on an upper surface of a sloping wall block in which fixing bolts are erected at positions obtained by dividing a circumferential direction of an upper end surface into a plurality at equal intervals, the height adjusting ring being provided. On the ring, a nut having a screw hole arranged at a right angle outward at a substantially intermediate height position was welded to the fixing bolt position of the inclined wall block, and a pipe having a diameter through which the bolt could be inserted was arranged and molded. A ring for adjusting the height of a manhole, characterized in that: 2. The manhole height adjusting ring according to claim 1, wherein the pipe is provided at a position where the circumference of the manhole height adjusting ring is divided into three parts. 3. A height adjusting ring to be mounted on an upper surface of a sloping wall block in which fixing bolts are erected at a position obtained by dividing a circumferential direction of an upper end surface into a plurality of portions at equal intervals. On the ring, a nut having a screw hole arranged at a right angle outward at a substantially intermediate height position was welded to the fixing bolt position of the inclined wall block, and a pipe having a diameter through which the bolt could be inserted was arranged and molded. A manhole height adjusting ring, wherein a hanging bracket is fastened to the nut of the manhole height adjusting ring with a fixing bolt.