JP3814188B2 - Receiving frame structure of protective lid for cold regions - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
TECHNICAL FIELD The present invention relates to a receiving frame structure for a protective cover for cold regions, and more particularly, to a receiving frame structure for mounting a protective cover for protecting a rising pipe provided in a buried pipe in the ground, particularly in a cold region. The present invention relates to a frame structure for a protective lid suitable for installation.
[0002]
[Prior art and problems to be solved by the invention]
As shown in the cross-sectional views of FIGS. 4 to 6, the protective cover 11 installed on the road or the like so as to cover the rising pipe 10 of the sewage pipe is formed in an annular shape on the crushed stone 13 portion laid on the ground 12. A pedestal 14 is installed, and a receiving frame 15 on which the protective lid 11 is mounted is placed on the pedestal 14, and crushed stone is filled and rolled around the pedestal 14, The upper portion of the crushed stone is filled with a pavement material 16 such as an asphalt mixture forming a road surface, and the upper surface of the protective lid and the pavement surface 17 are formed flush with each other.
[0003]
In such a receiving frame 15 of the protective lid 11, as shown in FIG. 5, when the pedestal 14 sinks due to ground subsidence or vibration of the traveling vehicle and the protective lid 11 is inclined, conventionally, the protective lid 11 has been repaired. As shown in FIG. 6, the asphalt around the receiving frame is excavated and removed, and the height of the receiving frame 15 is adjusted with the spacer 18 or the like, and then the excavated portion is backfilled to be filled with the repair asphalt 19 or the like. ing. For this reason, the repair work not only requires a lot of labor and time, but also has a great influence on road traffic.
[0004]
In the case of a protective cover installed in a cold region, even if the road surface around the protective cover is scraped off by spike tires, etc., the guide is inclined downward on the outside so that the snow removal plate of the snowplow does not get caught on the outer periphery of the receiving frame. The surface 20 is provided on the upper surface of the receiving frame. However, as shown in FIG. 5, the conventional guide surface 20 is provided in a state of protruding like a bowl on the entire upper periphery of the receiving frame 15, and a reinforcing rib exists in part below the guide surface 20. Therefore, when the receiving frame 15 is inclined due to ground subsidence or the like, the lower end of the snow removal plate 21 enters the space below the bowl-shaped guide surface 20, and the snow removal plate 21 is guided to the guide surface 20. And the receiving frame 15 may be caused.
[0005]
Accordingly, an object of the present invention is to provide a receiving frame structure for a protective cover for a cold region, which can easily repair a receiving frame inclined due to ground subsidence and the like, and can also prevent a snow removal plate from being caught on the receiving frame during snow removal work. .
[0006]
[Means for Solving the Problems]
In order to achieve the above object, a receiving frame structure for a protective cover for cold districts of the present invention has a lower receiving frame supported by a pedestal installed on the ground, and an upper receiving frame fitted to the inner periphery of the lower receiving frame. The upper receiving frame protrudes radially from the protective lid support portion provided at the upper inner periphery of the cylindrical body, the jack bolt mounting portion protruding from the lower inner periphery of the cylindrical body, and the upper outer periphery of the cylindrical body. A plurality of plate-like guide portions, and the guide portion has a downward slope of 20 to 30 degrees from the outer periphery of the upper receiving frame to the outer side, and the protrusion amount from the outer periphery of the upper receiving frame is 50 The lower receiving frame is provided on the lower inner periphery of the cylindrical main body so as to support an upper end of the jack bolt screwed to the jack bolt screwing portion and an upper receiving frame supporting flange. And a vertical insertion groove into which the plate-like guide portion is inserted. In either case, either the inner peripheral surface of the cylindrical main body of the lower receiving frame or the outer peripheral surface of the cylindrical main body of the upper receiving frame is expanded upward to allow the upper receiving frame to be tilted while being fitted to the lower receiving frame. It is characterized by being formed in a conical surface.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
1 to 3 show an example of a receiving frame structure of a protective cover for cold districts according to the present invention. FIG. 1 is a front view showing a state during construction, and FIG. 2 shows a state when the receiving frame is inclined. FIG. 3 is a sectional view showing a state where an inclined receiving frame is repaired. In addition, the same code | symbol is attached | subjected to the component same as the component described in the said prior art example, and detailed description is abbreviate | omitted.
[0008]
The receiving frame in the receiving frame structure of the protective cover for cold regions is provided so as to cover the rising pipe of the sewage pipe as in the conventional case, and is supported by a pedestal 14 installed on the ground 12. A receiving frame 30 and an upper receiving frame 40 that fits on the inner periphery of the lower receiving frame 30 are formed. The upper receiving frame 40 protrudes radially from the outer periphery of the upper part of the main body, the protective cover support part 42 that supports the protective cover 11 on the inner periphery of the cylindrical body 41, the jack bolt mounting part 43 that protrudes from the inner periphery of the lower part of the main body. A plurality of plate-shaped guide portions 44.
[0009]
The jack bolt mounting portion 43 is provided in a flange shape on the entire inner periphery of the main body, and is provided with female screws for screwing the jack bolt 45 at a plurality of locations, for example, 4 to 6 locations, at equal intervals. The number of jack bolts 45 installed is arbitrary, and if the number is increased, the upper receiving frame 40 can be supported in a more stable state, but the work amount increases. ~ 6 are suitable. Further, the jack bolt mounting portion 43 may be formed in a predetermined shape at a predetermined interval at a predetermined position on the inner periphery of the main body without being formed into a flange shape. Furthermore, the jack bolt 45 at the time of construction is normally set so that the bolt tip does not protrude downward from the jack bolt mounting portion 43.
[0010]
The plate-like guide portion 44 is formed of a plate-like body whose plate surface is oriented in a direction parallel to the axis of the upper receiving frame 40, and a plurality of the outer circumferences of the cylindrical main body 41 are equally spaced, usually 20 to Sixteen pieces are provided at intervals of about 30 degrees, for example, at intervals of 22.5 degrees, the circumferential dimension (thickness) D is several tens of mm, and the radial dimension (projection amount, width) W is 50. About 100 mm, usually about 70 mm, and the guide surface 44a serving as the upper edge of the plate-like body is 20 to 30 degrees with respect to the upper surface of the upper receiving frame 40 from the outer periphery of the upper receiving frame to the outside. Usually, a downward gradient (inclination angle C) of about 25 degrees is provided. The angle of the downward slope does not need to be constant, and the angle may change midway, and may be a curved surface as a whole.
[0011]
Moreover, it is preferable that the vertical dimension of the plate-shaped guide part 44 is set so that the height of the cylindrical main body 41 is ½ or less and the tip part is 50 mm or more. In this embodiment, the lower edge of the guide portion is formed as an inclined surface that rises outward, but the shape of the lower edge is arbitrarily set, for example, in a direction parallel to the upper surface of the upper receiving frame 40. It can be made into a suitable shape according to conditions such as the strength of the plate-shaped guide portion 44 and the weight of the upper receiving frame 40.
[0012]
On the other hand, the lower receiving frame 30 is composed of a cylindrical main body 31 having a diameter larger than that of the cylindrical main body 41 of the upper receiving frame 40. A flange 32 for supporting the upper receiving frame for supporting the tip of the jack bolt 45 protruding in the projecting manner is provided, and a vertical insertion groove 33 into which the plate-like guide portion 44 is inserted is provided on the upper portion of the main body. It is provided corresponding to each of the parts 44.
[0013]
Further, the inner peripheral surface 31 a of the cylindrical main body 31 of the lower receiving frame 30 is formed in a conical surface whose upper side is expanded in order to allow the upper receiving frame 40 to be tilted while being fitted to the lower receiving frame 30. That is, when the jack bolt 45 is operated to project the bolt tip downward from the jack bolt mounting portion 43 toward the upper receiving frame supporting flange 32, the upper receiving frame 40 can be inclined with respect to the lower receiving frame 30. I can do it. The size of the conical surface on the inner peripheral surface 31a of the cylindrical main body is set according to the relationship with the upper receiving frame 40, and the diameter of the lower end of the conical surface is the outer periphery of the cylindrical main body 41 of the upper receiving frame 40. The diameter is set to be equal to or slightly larger than the diameter of the lower end of the surface, and the upper receiving frame 40 is inserted into the lower receiving frame 30 during construction, and the lower surface of the jack bolt mounting portion 43 is placed on the upper surface of the upper receiving frame supporting flange 32 When this is done, it is preferable that the upper receiving frame 40 be fitted in a predetermined position in the lower receiving frame 30 without rattling.
[0014]
Further, the opening angle of the conical surface may be set in accordance with the maximum inclination angle of the upper receiving frame 40 with respect to the lower receiving frame 30. Usually, the maximum inclination angle of the upper receiving frame 40 is about 10 degrees at the maximum. When the upper receiving frame 40 is tilted by the above operation, the opening angle of the conical surface is also 10 degrees so that the outer peripheral surface of the cylindrical main body 41 on the side serving as the pivot point of the upper receiving frame 40 can be inclined toward the conical surface. It is preferable to set the degree. In addition, instead of the inner peripheral surface of the cylindrical main body 31 of the lower receiving frame 30, the outer peripheral surface of the cylindrical main body 41 of the upper receiving frame 40 may be a conical surface whose upper side is expanded.
[0015]
The receiving frame formed in this way is installed on a road or the like in the state shown in FIG. At this time, the pedestal 14 is positioned at a predetermined depth so as to be parallel to the pavement surface 17, whereby the upper receiving frame 40 is installed in a state of being coaxially fitted in the lower receiving frame 30. Then, when the pedestal 14 sinks and the receiving frame tilts as shown in FIG. 2 due to ground subsidence or vibration of the traveling vehicle, in the receiving frame shown in this embodiment, the protective cover 11 is removed and the tilt direction When each jack bolt 45 is screwed in according to the amount of subsidence, the tip of the bolt protrudes below the jack bolt screwing portion 43 and comes into contact with the upper surface of the upper support frame supporting flange 32, thereby The upper receiving frame 40 rises relative to the lower receiving frame 30.
[0016]
Therefore, there is almost no need to excavate and remove asphalt or the like around the receiving frame, and the upper receiving frame 40 can be placed in parallel with the road surface 17 by a simple operation of removing the protective lid 11 and operating the jack bolt 45 with an appropriate tool. Can be adjusted. After completion of the position adjustment of the upper receiving frame 40, the asphalt 19 for repair is filled around the receiving frame so that the pavement surface 17 and the protective lid 11 are flush with each other as shown in FIG. As described above, since the repair work of the receiving frame can be performed easily and in a short time, the influence on the road traffic can be extremely reduced.
[0017]
Further, as shown in FIG. 2, even if the snow removal work is performed with the road surface around the receiving frame being shaved or the receiving frame being inclined, the snow removing plate 21 is provided by the plurality of plate-shaped guide portions 44 provided on the outer periphery of the upper receiving frame 40. Can be guided toward the upper surface of the protective lid 11, so that the snow removal plate 21 can be prevented from being caught on the outer peripheral portion of the upper receiving frame 40. In particular, the plate-shaped guide portion 44 having the above-described shape is provided with a guide surface (guide surface 44a) for guiding the snow removal plate 21 on the upper edge of the vertically-arranged plate-shaped member with the radial tip portion directed in the vertical direction. Therefore, there is no space where the lower end of the snow removal plate 21 is caught below the guide surface. Therefore, even if the receiving frame is inclined due to ground subsidence or the like, the snow removing plate 21 is not caught and causes the receiving frame.
[0018]
In addition, the protrusion amount W and the inclination angle C of the guide surface 44a serving as the snow removal plate guide surface in the plate-shaped guide portion 44 affect not only each other but also the entire upper receiving frame 40. If the amount W is increased, the inclination angle C can be reduced, and the snow removal plate 21 can be guided more smoothly. However, the plate-like guide portion 44 is increased and the weight and outer diameter of the entire upper receiving frame are increased. Conversely, if the inclination angle C is increased, the protrusion amount W can be reduced to reduce the weight and size of the entire upper receiving frame, but this is not preferable because the sliding resistance when guiding the snow removal plate 21 is increased. Moreover, if the installation interval of the plate-shaped guide portions 44 is increased to reduce the number of the plate-shaped guide portions 44, the weight of the upper receiving frame 40 can be reduced, but the snow removal plate 21 may directly collide with the cylindrical main body 41. Therefore, it is not preferable. Therefore, the plate-shaped guide portion 44 needs to set the optimal number of installations, the protruding amount W, and the inclination angle C according to the diameter of the receiving frame. Usually, it is necessary to set it within the above-described range. Sufficient snow removing plate guide action can be obtained.
[0019]
【The invention's effect】
As described above, according to the receiving frame structure of the protective cover for cold districts of the present invention, even if the receiving frame is inclined due to ground subsidence, it can be repaired to a predetermined state with a simple operation, It is also possible to prevent the snow removal plate from being caught by the receiving frame during snow removal work on the ground.
[Brief description of the drawings]
FIG. 1 is a front view showing an example of a receiving frame structure of a protective cover for cold districts according to the present invention, showing a state at the time of construction.
FIG. 2 is a cross-sectional view showing a state when the receiving frame is similarly inclined.
FIG. 3 is a cross-sectional view showing a state where a similarly inclined receiving frame is repaired.
FIG. 4 is a cross-sectional view showing an example of a conventional protective lid receiving frame.
FIG. 5 is a cross-sectional view showing a state when the receiving frame is similarly inclined.
FIG. 6 is a cross-sectional view showing a state where a similarly inclined receiving frame is repaired.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 11 ... Protective cover, 12 ... Ground, 13 ... Crushed stone, 14 ... Pedestal, 16 ... Pavement material, 17 ... Pavement surface, 19 ... Asphalt for repair, 21 ... Snow-removal board, 30 ... Underlay frame, 31 ... Cylindrical main body, 31a DESCRIPTION OF SYMBOLS ... Inner peripheral surface, 32 ... Flange for upper receiving frame support, 33 ... Insertion groove, 40 ... Upper receiving frame, 41 ... Cylindrical main body, 42 ... Protective lid support part, 43 ... Jack bolt mounting part, 44 ... Plate-shaped guide part, 44a ... guide surface, 45 ... jack bolt

Claims (1)

A protective cover supporting portion provided on the upper inner periphery of the cylindrical main body, and having a lower receiving frame supported by a pedestal installed on the ground and an upper receiving frame fitted to the inner periphery of the lower receiving frame. A jack bolt mounting portion projecting from the lower inner periphery of the cylindrical main body, and a plurality of plate-shaped guide portions projecting radially from the upper outer periphery of the cylindrical main body, the guide portion having an upper edge at the top It has a downward slope of 20 to 30 degrees from the outer periphery of the receiving frame to the outside, and the amount of protrusion from the outer periphery of the upper receiving frame is 50 to 100 mm. The lower receiving frame protrudes from the lower inner periphery of the cylindrical body And a flange for supporting the upper receiving frame that supports the tip of the jack bolt that is screwed to the jack bolt screwed portion, and a vertical insertion groove that is provided on the upper portion of the cylindrical main body and into which the plate-shaped guide portion is inserted. And an inner peripheral surface of the cylindrical body of the lower receiving frame and a cylindrical body of the upper receiving frame One of the peripheral surfaces is formed in a conical surface whose upper side is widened to allow tilting of the upper receiving frame in a state of being fitted to the lower receiving frame. Construction.

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