JP2008121198A - Receiving frame height adjusting device for underground structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reuse a part of a constructed adjusting device, without breaking existing adjusting mortar, or minimizing breaking, in adjusting the receiving frame height in response to the height around an opening. <P>SOLUTION: This receiving frame height adjusting device has a cylindrical vertically moving member 13 threadedly engaging with a fixing bolt 12 implanted on the lower structure side, arranging an outside step part 14 in a cylindrical lower part and having an engagement mating part 15 of a threadedly engaging operation member 24; a curved surface washer 16 having an insertion hole part of the fixing bolt, arranging a convex curved surface 18 downward outward from its periphery, having a support surface 19 capable of contacting with a receiving frame, having a required space 20 inside for enabling operation by an operation member and supported on the outside step part, an expandable cover 21 covering the fixing bolt 12, the vertically moving member 13 and a lower part of the curved surface washer 16 exposed between a lower structure and the curved surface washer 16; and the operation member 24 having a pipe-shaped member 26 for arranging an engaging part 25 on the tip for engaging with the engagement mating part 15 of the vertically moving member 13. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an apparatus for interposing between a receiving frame and a lower structure of a lid that closes an opening in an underground structure and adjusting the height of the receiving frame according to the height around the opening.

  For example, when a surrounding road surface sinks or breaks in a manhole provided on a road, repair work is performed in which the road pavement is peeled off and then re-paved. In that case, it is necessary to remove the receiving frame of the manhole iron cover and adjust it to the height and inclination of the road surface to be re-paved. As a height adjustment method for such construction, for example, there is a thing of Unexamined-Japanese-Patent No. 2001-182727, and since the height adjustment metal fitting will be buried in mortar, in the case of re-construction, The mortar used for height adjustment must be destroyed. But that is uneconomical.

  In the case of the invention of JP-A-10-60930, since the level adjustment block is covered with a protection block, the adjustment block can be exposed by removing the protection block at the time of re-construction, and a new height adjustment can be performed. At that time, the mortar is not destroyed. However, the protective block is large in size because it is fitted to the level adjustment block from above, which may reduce the mortar filling volume and reduce the strength. In addition, it is difficult to avoid inflow of mortar when the fitting is insufficient or a gap is formed due to lack of appropriate attachment. Such is the case with the invention of JP-A-10-68136.

Japanese Patent Laid-Open No. 10-60930 JP-A-10-68136 JP 2001-182727 A

  The present invention has been made paying attention to the above points, and the problem is that the height of the receiving frame can be adjusted in accordance with the height around the opening, and re-lifting after construction is required. Occasionally, the existing adjustment mortar will not be destroyed, or it will be possible to change the height of the receiving frame by minimizing the destruction and reusing parts of the adjustment device that has already been installed. is there. Another object of the present invention is to reduce the strength of the mortar filling volume without reducing the strength by rationalizing the configuration of the adjusting device. Another object of the present invention is to make it easy to remove the parts of the adjusting device from the mortar at the time of re-construction without causing a flow failure of the mortar.

    In order to solve the above-described problems, the present invention interposes between a receiving frame and a lower structure of a lid that closes an opening in an underground structure, and adjusts the height of the receiving frame according to the height around the opening. As an apparatus for this, it is possible to move up and down by screwing to a fixing bolt planted on the side of the lower structure, and an outer step provided on the outer periphery to support a member disposed at a higher level, A cylindrical up / down moving member having an engaging counterpart of an operating member that performs a screwing operation from above, a hole formed in the center for insertion through the up / down moving member, and outward and upward from the periphery of the hole Necessary for enabling operation by the operation member in a state where the downward convex curved surface provided toward the upper side, the support surface provided above the convex curved surface and capable of contacting the receiving frame, and being inserted into the fixing bolt. On the outer step of the vertical movement member And a curved washer is supported, in which took measures that comprises a stretchable cover, which covers the lower portion of the fixing bolt with vertical movement member and curved washer exposed between the lower structure and the curved washer.

  The height adjusting device of the present invention is interposed between the receiving frame and the lower structure of the lid that closes the opening in the underground structure, and adjusts the receiving frame height according to the height around the opening. The purpose is to improve on the technology of. The height of the receiving frame is adjusted using fixing bolts planted in the lower structure, and it is necessary to consider the inclination along with the height. In the present invention, the lower structure means a lower structure for attaching the receiving frame, and many may be considered as so-called side blocks, but may be an adjustment block.

  The fixing bolt planted on the side of the lower structure is provided with a cylindrical vertical moving member that can move in the vertical direction by screwing with the fixing bolt. The vertical movement member has an outer step portion provided on the outer periphery in order to support a member disposed at a higher level, and also has an engagement counterpart portion of an operation member that performs a screwing operation from above. .

  The vertical movement member has a female threaded portion that is screwed into the fixing bolt on the cylindrical inner surface, and a flange-shaped portion that constitutes an outer stepped portion is provided outside the cylindrical shape. An engaging structure can be provided. As described above, the vertical moving member is a cylindrical member that is screwed to the fixing bolt and has only the outer step portion on the outer periphery, and thus can be formed as small as a nut.

  A curved washer is combined as a member supported on the outer step portion of the up-and-down moving member. The curved washer is provided at a position higher than the convex curved surface, a hole formed in the central portion for insertion into the vertically moving member, a downward convex curved surface provided outward and upward from the periphery of the hole, It has a support surface that can contact the receiving frame, and an inner space necessary for enabling operation by the operation member in a state of being inserted through the fixing bolt.

  This curved washer is made of a circular member formed into a spherical shell shape by press molding, and has a structure in which a supporting surface is provided outward at the peripheral edge of the circular member. easy. In addition, it has a downwardly convex curved surface as a curved washer, so it is easy to incline according to the inclination of the receiving frame, the mortar filling volume does not decrease much, does not hinder the flow of mortar, and peels off from mortar due to readjustment It is not difficult. However, in order to further facilitate peeling, a release material may be applied to the convex curved surface.

  The apparatus of the present invention further includes a fixing bolt exposed between the lower structure and the curved washer, a vertically moving member, and an extendable cover that covers the lower portion of the curved washer. The cover is the same as the conventional one in that it covers the fixing bolt and can be expanded and contracted, but it is novel in that it covers the lower part of the vertically moving member and the curved washer. And the extendable cover surrounds the lower part of the curved washer supported by the outer step part and the outer step part of the lower part of the vertical movement member from below so as to cover the lower part of the vertical movement member and the curved washer. It can have a surrounding part, and it can comprise so that the upper end of a surrounding part may contact the lower part of a curved washer more appropriately.

  The present invention further uses the operation member having a pipe-like member provided with an engaging portion that can be engaged with an engaging counterpart of the vertically moving member at the tip. The engaging portion of the operating member is engaged with the engaging counterpart portion of the up-and-down moving member, and these mutual engaging structures include, for example, a convex portion and a concave portion, a notch and a protrusion. The engaging portion is provided at the tip of the pipe-like member, and the upper end portion of the fixing bolt enters the inside of the pipe-like structure.

  Since the present invention is configured and operates as described above, it is possible to adjust the height of the receiving frame according to the height around the opening as in the prior art, and it is necessary to re-lift after construction. When removing a curved washer with a downwardly convex curved surface, the existing adjustment mortar is not destroyed, or the destruction is minimized, and the parts of the adjustment device that has already been installed are reused. Thus, the height of the receiving frame can be easily and economically changed. Further, according to the present invention, by rationalizing the configuration of the adjusting device, the mortar filling volume can be prevented from being reduced and the strength can be maintained. In addition, according to the present invention, by using a curved washer having a downwardly convex curved surface, there is an effect that the flow of the mortar does not occur and the components of the adjusting device can be easily removed from the mortar at the time of re-working.

  Hereinafter, the present invention will be described in more detail with reference to the illustrated embodiments. FIG. 1 shows an example of a receiving frame height adjusting device 10 for an underground structure according to the present invention. A fixing bolt 12 is planted on the side of the lower structure 11 and is screwed into a male screw portion 12a. A substantially cylindrical up-and-down moving member 13 having a mating female thread portion 13a on a cylindrical inner surface is provided so as to be movable in the vertical direction.

  The vertically moving member 13 is provided with an outer stepped portion 14 by providing a flange-like portion around the entire outer periphery of the lower portion of the cylindrical shape, and an engaging structure including a concave portion is provided as an engaging counterpart portion 15 at the upper end of the cylindrical shape. (See FIGS. 2A, 2B and 2C). The illustrated vertically moving member 13 is formed by processing a metal material into a shape as shown in FIG. 2, and is formed slightly smaller than the nut combined with the fixing bolt 12.

  A curved washer 16 is supported on the outer step portion 14 by the vertical movement member 13. The illustrated curved washer 16 includes a hole portion 17 formed in a penetrating shape so as to pass through the cylindrical portion of the up-and-down moving member 13, and a downward convex curved surface 18 provided outward and upward from the periphery of the hole portion. The support surface 19 is provided above the convex curved surface 18 and can be brought into surface contact with the receiving frame 29 almost entirely, and is necessary for enabling the operation by the operation member 24 in a state where the fixing bolt 12 is inserted. It has an inner space 20.

  The curved washer 16 is composed of a circular member formed of a metal material in a relatively shallow spherical shell shape by press molding, and is supported on the outer step portion 14 of the tilting vertically moving member 13 corresponding to the tilt of the receiving frame 29. (See FIGS. 5A and 5B). Instead of the spherical shell-shaped curved washer 16 formed by the press molding shown in the figure, a solid (ingot) -shaped structure can be applied, but in this case, the inside of the operation member 24 can be inserted. It is necessary to provide the space 20 by cutting or the like.

  The exposed portion of the fixing bolt 12 between the lower structure 11 and the curved washer 16 and the lower portions of the up and down moving member 13 and the curved washer 16 are covered with an extendable cover 21. The cover 21 covers the fixing bolt 12 and can be expanded and contracted, and has a bellows-like structure for expansion and contraction.

  The illustrated expandable cover 21 covers the lower portion of the up and down moving member 13 and the lower portion of the curved washer 16, and the curved washer 16 supported by the outer step 14 and the outer step 14 of the lower portion of the up and down moving member 13. The enclosure 22 is formed in a slightly large-diameter cylindrical shape that encloses the lower part of the cylinder from below. It is desirable that the upper end 22a of the surrounding portion 22 is formed in an inclined shape so as to contact the lower portion of the convex curved surface 18 of the curved washer 16. Reference numeral 23 denotes a mouth frame at the lower end of the cover.

  Further, the operation member 24 is combined. The operation member 24 is provided with a convex engagement portion 25 that can be engaged with the concave engagement counterpart portion 15 of the vertical movement member 13 at the tip of the pipe-shaped member 26. Has a handle mounting hole 27. The handle 28 is used by being inserted into the mounting hole 27. However, a bar having a short moment arm is used to prevent an excessive torque from being applied and to a necessary and sufficient level.

  5A and 5B show an application example of the apparatus 10 according to the present invention, and 29 shows a receiving frame that supports a lid (not shown) of an underground structure, and is provided on the flange 30 thereof. The fixing bolt 12 is passed through the bolt hole 31 and the height is adjusted by the device 10 according to the present invention. In the example shown in FIG. 5A, the adjustment block 32 is used at the top of the lower structure 11 and the height of the receiving frame is adjusted to the height around the opening. Further, in the example shown in FIG. 5B, an example is shown in which a plurality of covers 21 that can be expanded and contracted are used in accordance with longer fixing bolts 12 in order to cope with a larger amount of raising.

  In order to use the receiving frame height adjusting device 10 of the present invention configured as described above, as shown in FIG. 6, fixing bolts 12 are implanted in the lower structure 11 and all the fixing bolts 12 are installed. The curved moving washer 16 is inserted into the cylindrical portion of each vertical moving member 13 through the hole portion 17 and supported by the outer step portion 14 from above, and the bolt of the flange portion 30 from above. The receiving frame 29 is placed through the hole 31. In the state where the receiving frame 29 is placed, it is confirmed that the upper end of the cover 21 covering the fixing bolt 12 surrounds the vertical movement member 13 and is in close contact with the lower surface of the curved washer 16. Reference numeral 33 denotes a planned corrected road surface, that is, a position around the opening.

  Next, the height is adjusted so that the upper surface of the receiving frame 29 coincides with the position 33 around the opening by rotating the up and down moving member 13 screwed into the fixing bolt 12 using the operation member 24 ( FIG. 7). This operation is performed for all the fixing bolts 12, the mortar 35 is driven, and the raising adjustment is completed as shown in FIG. Reference numeral 34 denotes a nut for fixing the receiving frame. After this adjustment, when further adjustment is necessary, the nut 34 is once removed, and the vertical movement member 13 is raised by a necessary amount on the new corrected road surface, that is, the position 33 'around the opening by using the operation member 24. (FIG. 9). At this time, the fixing bolt portion 36 exposed on the adjustment mortar is also covered with another cover 21.

The partial cross section front view which shows an example of the receiving frame height adjustment apparatus for underground structures which concerns on this invention. The vertical movement member of the same apparatus is shown, A is a top view, B is sectional drawing, C is a front view. Similarly, it shows a curved washer, A is a plan view, and B is a cross-sectional view. Similarly, it shows a cover, A is a plan view, B is a partial cross-sectional front view. The state of implementation of the device of the present invention is shown, in which A is a partial sectional view of an example, and B is a sectional view showing an example using a plurality of covers. Explanatory drawing which shows the state which supported the receiving frame using this invention apparatus. Explanatory drawing at the time of the height adjustment start of a receiving frame. Explanatory drawing at the time of height adjustment completion of a receiving frame. Explanatory drawing which shows a re-lifting state.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Height adjustment apparatus 11 Substructure 12 Fixing bolt 13 Vertical movement member 14 Outer step part 15 Engagement part 16 Curved washer 17 Hole 18 Convex curve 19 Support surface 20 Space 21 Extendable cover 22 Enclosing part 23 Mouth frame 24 Operation member 25 Engaging portion 26 Pipe-shaped member 27 Mounting hole 28 Handle 29 Receiving frame 30 Flange 31 Bolt hole 32 Adjustment block 33, 33 'Position around opening 34 Nut 35 Mortar

Claims (4)

In the underground structure, the device is interposed between the receiving frame of the lid that closes the opening and the lower structure, and adjusts the height of the receiving frame according to the height around the opening,
Screwed into the fixing bolts planted on the side of the lower structure and movable in the vertical direction, and the outer stepped portion provided on the outer periphery to support the upper member, and screwing operation from above A cylindrical up-and-down moving member having an engaging counterpart of an operating member for performing
A hole formed in the center for insertion into the up and down moving member, a downwardly convex curved surface provided outward and upward from the periphery of the hole, and provided above the convex curved surface, and can contact the receiving frame And a curved washer that is supported on the outer step of the up and down moving member, and has a space necessary for enabling operation by the operating member in a state of being inserted into the fixing bolt,
A receiving frame height adjusting device for an underground structure, comprising: a fixing bolt exposed between the lower structure and the curved washer; a vertically movable member; and an extendable cover for covering the lower portion of the curved washer. The vertical movement member has a female threaded portion that is screwed into the fixing bolt on the cylindrical inner surface, and a flange-shaped portion that constitutes an outer stepped portion is provided outside the cylindrical shape, and an engagement counterpart portion is provided on the cylindrical upper end. The receiving frame height adjusting device for an underground structure according to claim 1, wherein a concave portion is provided. The receiving frame height for an underground structure according to claim 1, wherein the curved washer is formed of a circular member formed into a spherical shell shape by press molding, and a support surface is provided outwardly at a peripheral portion of the circular member. Adjustment device. The cover that can be extended and contracted includes a lower part of the vertical movement member and a lower part of the curved washer supported on the lower part of the vertical movement member and a surrounding part that surrounds the lower part of the curved washer from the lower side in order to cover the lower part of the vertical movement member and the curved washer. The receiving frame height adjusting device for an underground structure according to claim 1, further comprising: an upper end of the surrounding portion that is in contact with a lower portion of the curved washer.

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