JPH0237864Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a fixing device for a receiving frame of an iron cover such as a manhole cover or a fire hydrant cover.

In the conventional fixing device for the receiving frame of an iron lid, an anchor bolt is installed upright on the upper end surface of the concrete pipe on which the receiving frame is placed, and the bolt hole of the receiving frame is inserted into the anchor bolt to fix the receiving frame. was fixed to a concrete pipe body. However, if the receiving frame has a hollow quadrilateral cross section, the bolt hole into which the anchor bolt is inserted is provided in the bottom wall, and a notch is provided in each anchor for inserting a tool when tightening the anchor bolt into the side wall. Since they must be provided for each bolt position, it has been impossible to provide a large number of cutouts in the side wall of the receiving frame because this would reduce the structural strength.

Utility Model Application No. 58-103239 The fixing structure of the manhole receiving frame is such that the bottom surface of the receiving frame is placed on the top surface of the concrete pipe, and the outer horizontal plate of this receiving frame is placed under the bolts attached vertically to the tip of the fixing fitting. Since the end face is crimped, the receiving frame will move up and down unless the outer peripheral horizontal plate of the receiving frame is strongly pressed with bolts. Therefore, if the bolt is strongly pressed against the horizontal plate on the outer periphery of the receiving frame, the tip of the fixing fitting will lift up, and the force to press the receiving frame against the concrete pipe will be insufficient, and the lid body placed on the receiving frame will receive a strong impact. and,
The receiving frame also had the disadvantage of causing resonance and rattling.

Therefore, in the present invention, a bottom wall is placed on the top surface of a concrete pipe, a receiving frame is provided with a bolt seat, a bolt hole, and a locking device mounting recess on the outer wall, and a bolt is inserted into the bolt hole of the receiving frame. a bolt, a bent portion at the lower end that is secured to the flange of the concrete pipe;
A locking tool that is continuous with the bent part and has a straight part that is connected to the outer wall of the receiving frame and the outer wall of the concrete pipe body by making a bolt hole for the bolt at the upper end, and a destance and bolt that are inserted into the bolt. If the flange is provided on the outer periphery of the end of the concrete pipe body where the receiving frame of the iron lid is installed, the bent part of the locking tool can be By locking and installing it on the lower surface of the flange, the receiving frame of the iron lid can be fixed to the concrete pipe body using not only anchor bolts but also locking tools. The number of anchor bolts used can be minimized, and therefore the number of notches required for tightening the anchor bolts to the receiving frame can also be minimized. In addition, if a flange is not provided on the outer periphery of the end of the concrete pipe on which the receiving frame is installed, the bent part of the lower end of the locking device should be positioned on the outside of the concrete pipe. The receiving frame is fixed to the concrete pipe body 6 by pressing the outer circumference of the concrete pipe with the straight part of the upper end of the fastener, and the bent part of the lower end of the fastener is placed in the ground. Since it is buried, the receiving frame can be installed integrally with the concrete pipe body, and the number of anchor bolts for fixing the receiving frame can be minimized. The number of notches used for tightening could also be minimized.

Next, embodiments of the present invention will be described based on the drawings. First of all, FIG. 1 shows a case in which a receiving frame is fixed to a concrete pipe body with a flange, and a lid fitting part 3 is provided on the upper part of the inner wall 2 of the receiving frame 1. A lid (not shown) is fitted and disposed on the
Further, a notch 4 is provided at the bottom of the inner wall 2, into which a tool for tightening the anchor bolt is inserted. The bottom wall 5 of the concrete tube 6 is placed on the upper end surface of the concrete tube 6, and an anchor bolt (not shown) installed upright on the upper end surface of the concrete tube 6 is drilled into the bottom wall 5. The support frame 1 is inserted into the provided anchor bolt hole 7, and a nut (not shown) is screwed onto the top of the bottom wall 5 and tightened to secure the support frame 1 to the concrete tube body 6. This anchor bolt (not shown) is attached to the circumference of the concrete pipe body 6.
They are placed upright in equal positions. Furthermore, a bolt seat 9 is arranged at the inner lower part of the outer wall 8 of the receiving frame 1 at a position where the receiving frame 1 is divided into three parts.
A bolt hole 11 is horizontally drilled through the bolt seat 9 and the locking device mounting recess 10, and the bolt hole 11 is inserted into the bolt hole 11 from the notch 4 of the inner wall 2. A bolt 12 is arranged,
The head 13 of this bolt 12 is formed into a rectangular shape, and one side of this head 13 is placed in contact with the inner surface of the bottom wall 5 of the receiving frame 1 so that it cannot rotate. Straight section 1 at the top of the locking tool 14
4a is inserted, and the lower bent portion 16 of the locking tool 14 is locked to the lower surface of the flange 6a provided on the outer periphery of the upper end of the concrete tube 6. In addition, the upper straight portion 14a of the locking tool 14 is connected to the locking tool mounting recess 10 in the outer wall 8 of the receiving frame 1.
Since it is fitted and disposed, it is attached so that it cannot rotate. A distance 17 is inserted into the bolt 12 to the left of the locking tool 14, and a nut 1 is inserted into the male thread of the bolt 12 that protrudes from the distance 17.
8 are screwed and press the distance 17 and the locking tool 14 to fix the receiving frame 1 to the concrete tube body 6. After the receiving frame 1 is fixed to the concrete pipe body 6, the outside of the receiving frame 1 is buried underground up to its upper surface.

Next, we will discuss the fixing of the receiving frame 1 in the case where the upper end of the concrete pipe body 6 shown in FIG. 2 does not have a flange. 12, a distance 17 is inserted on the left side, and a bolt hole 15 of the straight portion 14a of the locking tool 14 is inserted into the right side of this distance 17. The bent portion 16 is disposed so as to be located outward, and the outer periphery of the upper end of the concrete tube 6 is connected to the locking tool 1.
A nut 18 is screwed onto the male thread of the bolt 12 that protrudes to the left of the locking tool 14, and by tightening the nut 18, the locking tool 14 is fixed to the receiving frame 1 and the concrete pipe body 6 via the distance 17. After the fixing of the receiving frame 1 and the concrete pipe body 6 is completed, the outside of the receiving frame 1 is buried underground up to its upper end.

In this embodiment, the bolt 1 for fixing the locking tool 14 is
However, depending on the wall thickness of the concrete pipe body 6 and the dimensions of the bottom wall 5 of the receiving frame 1, various distances 17 may be used and the locking tool 14 may be used. The receiving frame 1 and the concrete pipe body 6 can be fixedly installed.

As described above, the present invention has a bent part 16 at the lower end of the locking tool 15 that engages with the flange part 6a of the concrete pipe body 6, and the upper end of this bent part 16 has a straight line that tightly contacts the outer wall 8 of the receiving frame 1. By connecting the portions 14a, the outer wall 8 of the receiving frame 1 and the straight portion 1 of the locking tool 14
4a with bolts 12 and nuts 18, and as the bolts 12 are tightened with the nuts 18, the receiving frame 1 can be centripetally and firmly connected to the concrete tube body 6 with the locking tools 14. In addition, if the concrete pipe body 6 does not have a flange 6a, the bent part 16 of the locking tool 14 is positioned 180 degrees on the opposite side and the bolt 12 is inserted into the straight part 14a of the locking tool 14.
The locking tool 14 is centripetally brought into close contact with the outer wall 8 of the receiving frame 1 through the distance 17, and the bottom surface of the receiving frame 1 can be tightened to the top surface of the concrete pipe body 6, making it versatile. This has the effect of quickly and accurately fixing the receiving frame 1 and the concrete pipe body 6.

Furthermore, when the bent portion 16 of the locking tool 14 is locked to the flange 6a of the concrete tube 6, the distance 17 is fitted between the straight portion 14a of the locking tool 14 and the nut 18. By tightening the nuts 18, the receiving frame 1 can be fixed to the concrete tube 6, and the flange 6 is attached to the concrete tube 6.
If there is no a, the nut 1 is fitted between the straight part 14a of the locking tool 14 and the outer surface of the outer wall 8 of the receiving frame 1.
8 can be tightened to fix the receiving frame 1 to the concrete pipe body 6.

In both of the above two examples, the distances 17 of the same length can be used, so the number of parts can be reduced, and moreover, it is possible to use the distances 17 of the same length, and in addition, according to the wall thickness of the concrete pipe body 6 and the dimensions of the bottom wall 5 of the receiving frame 1. The receiving frame 1 and the concrete tube body 6 can be fixed using distances 17 having different dimensions. Therefore,
It is possible to prevent lateral displacement between the receiving frame 1 and the concrete pipe body 6 and to firmly connect them.

[Brief explanation of drawings]

FIG. 1 is a sectional view of an embodiment in which the concrete tube has a flange, and FIG. 2 is a sectional view of an embodiment in which the concrete tube does not have a flange. 1... Receiving frame, 2... Inner wall, 4... Notch, 5
...Bottom wall, 6...Concrete pipe body, 6a...
Flange of concrete pipe body, 8... Outer wall, 9...
...Bolt seat, 10...Lock mounting recess, 11...
Bolt hole, 12... bolt, 13... head of bolt, 14... locking tool, 14a... linear part of locking tool, 15... bolt hole of locking tool, 16... of locking tool Bend part, 17...Destance, 18...Natsuto.

Claims (1)

[Scope of Claim for Utility Model Registration] An inner wall 2 in which a lid fitting part 3 is arranged, an outer wall 8 in which a locking tool mounting recess 10 is formed on the outer surface and a bolt hole 11 is drilled, and a concrete pipe body. a receiving frame 1 provided with a bottom wall 5 disposed on the upper end surface of
A locking tool 14 continuously provided with a straight part 14a with a bolt hole 15 and a bent part 16 that can be engaged with a flange part 6a of a concrete tube 6, and an inner surface of the outer wall 8 of the receiving frame 1. head 1 that is latched to
3 are provided, and bolt holes 11 in the outer wall 8 and locking tools 1 are provided.
It is inserted into the bolt hole 15 of No. 4, and a nut No. 1 is attached to the tip.
A bolt 12 is inserted through the bolt 12 and is engaged between the outer surface of the outer wall 8 of the receiving frame 1 and the straight portion 14a of the locking tool 14, or is inserted through the bolt 12 and engaged between the outer surface of the outer wall 8 of the receiving frame 1 and Stop 14
A fixing device for a receiving frame of an iron lid, comprising: a distance 17 which is engaged between a straight part 14a of the iron lid and a nut 18;