JP2010168822A - Buried case - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a buried case that can prevent the height variation of an upper body caused by vibration and impact and easily adjust the vertical position of the upper body even in an underground buried state in construction and raising. <P>SOLUTION: The buried case includes an outer body 11 having an internal thread part, and an inner body 15 having an iron cover receiving frame and an external thread part. The buried case has a pressing member 35 movable through an opening of the inner body, an operating member 38 movable along the inclined surface of the pressing member and having an internal threaded hole, and an external thread member 42 thread-engaged with the internal threaded hole and rotatable while vertical movement is forbidden. The external thread member is rotated to move the operating member. The pressing member is thereby moved radially outward and pressed to the outer body to hold the inner body in a rotation stop state. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a buried housing installed in the ground for protection and maintenance inspection of underground facilities such as water and gas control valves.

  In the basement, laying pipes for supplying water, gas, electricity, etc. are buried. Control pipes such as water control valves, connectors, breakers, etc. are appropriately connected to these laying pipes, and these underground facilities are operated from the ground, maintained and inspected, and these are protected and installed. Must be specified. For this purpose, a hollow enclosure with a hollow structure is installed in the ground. In the case of a manhole, a similar buried housing is set.

  A receiving frame portion for fitting and supporting the iron lid so as to be openable and closable is provided at the upper end opening of the embedded housing. This receiving frame portion may be provided integrally with the embedded housing or may be formed of another member. The iron lid is supported in a fitted state (closed state) in the opening of the receiving frame portion so that the upper surface thereof is substantially flush with the road surface. The iron lid is attached to the receiving frame portion so as to be openable and closable via a trillion, a connecting rod, a chain, or the like.

  As an embedded enclosure, it is equipped with an external body that is buried underground and forms a storage space for underground equipment, and an internal body that has a receiving frame portion for supporting an iron lid at the upper end, and the upper body is attached to the lower body. On the other hand, the thing of the structure connected so that height adjustment is possible by carrying out screw engagement is used. Since such an embedded case can adjust the height of the upper end (the height of the iron lid receiving frame) simply by rotating the upper body, it is convenient for height adjustment during construction and raising the height when it sinks. Such a buried case is disclosed in Patent Document 1 and Patent Document 2, for example.

  However, in such a conventional embedded housing composed of an upper main body and a lower main body that are screw-engaged, the upper main body is rotated when the height of the upper main body is adjusted (raised or lowered) during construction or in use. Since it is necessary, the rotational resistance due to earth pressure is large and adjustment work is difficult. Further, in order to reduce the rotational resistance, the periphery of the upper body has to be dug up, and in any case, the work is complicated.

  The present invention has been made in view of such technical problems. The object of the present invention is to prevent the fluctuation of the height of the upper main body due to vibration and impact, and to easily adjust the vertical position of the upper main body even when buried in the ground during construction or raising the height. Is to provide.

  The present invention relates to an embedded housing in which an iron lid is attached to an upper end portion that is substantially the same height as the ground, a cylindrical external main body having an internal thread portion formed on an inner peripheral surface, and the internal thread portion formed on an outer peripheral surface. A cylindrical inner main body having a male screw part engageable with a screw and having an iron lid receiving frame part at the upper end, and an iron lid supported by the iron lid receiving frame part, and formed in the inner main body A pressing member mounted on the inner main body so as to be movable in the radial direction through the formed opening, and mounted so as to be movable in a diagonal direction by sliding along a radial inclined surface formed on the pressing member. And an operating member having a female screw hole penetrating in the vertical direction, and a male screw that is screw-engaged with the female screw hole of the operating member and is rotatably supported by the internal body in a state in which vertical movement is prohibited A male screw member The pressing member is moved in the radial direction through the inclined surface by rotating and moving the operating member in the vertical direction, and the male screw member is rotated to move the pressing member outward in the radial direction. And the pressing member is pressed against the external body to hold the internal body against the external body in a non-rotating state.

  According to the present invention, it is possible to prevent fluctuations in the height of the upper main body due to vibrations and impacts, and it is possible to easily adjust the vertical position of the upper main body even when buried in the ground during construction or raising the height. Is provided.

It is a central part longitudinal cross-sectional view of the embedded housing which concerns on one Embodiment. It is a top view which shows the embedded housing which concerns on one Embodiment, omitting an iron lid. FIG. 2 is a longitudinal sectional view of a central portion of the external body in FIG. 1. FIG. 4 is a plan view of FIG. 3. It is a center part longitudinal cross-sectional view of the internal main body in FIG. FIG. 6 is a plan view of FIG. 5. It is a longitudinal cross-sectional view of the pressing state of a pressing mechanism. It is a front view of the press mechanism seen from line 8-8 in FIG. It is a longitudinal cross-sectional view of the press release state of a press mechanism. It is a central part longitudinal cross-sectional view which omits an iron lid and shows the state when operating the pressing mechanism of the embedded housing which concerns on one Embodiment.

  Embodiments of the present invention will be specifically described below with reference to the drawings. Note that the same reference numerals denote the same or corresponding parts throughout the drawings. FIG. 1 is a longitudinal sectional view of a central portion of a buried housing according to an embodiment. FIG. 2 is a plan view showing an embedded enclosure according to an embodiment without an iron lid. FIG. 3 is a longitudinal sectional view of the central portion of the external body in FIG. FIG. 4 is a plan view of FIG. FIG. 5 is a longitudinal sectional view of the central portion of the inner body in FIG. 6 is a plan view of FIG. FIG. 7 is a longitudinal sectional view showing a pressing state of the pressing mechanism. FIG. 8 is a front view of the pressing mechanism as seen from line 8-8 in FIG. FIG. 9 is a vertical cross-sectional view of the pressing mechanism in a release state. FIG. 10 is a vertical cross-sectional view of the central portion showing the state when operating the pressing mechanism of the embedded housing according to the embodiment, with the iron lid omitted.

  A seat (not shown) made of concrete or brick is embedded in the vicinity of a buried device (underground equipment) such as a control valve provided in the middle of a pipe for water, gas or electricity. A cylindrical external body 11 is supported on the table. The external main body 11 is embedded in the ground, and may be connected and fixed to the seat with a bolt or the like as necessary. The external body 11 is a cylindrical hollow member having an upper and lower axial center and open at the upper and lower ends. An internal thread portion 12 is formed on the inner peripheral surface, and a flange portion 13 projecting outward is formed at the lower end portion. Is formed. Inside the outer body 11, a cylindrical inner body 15 with upper and lower ends open is screw-engaged so that the vertical position can be adjusted. That is, the external thread portion 16 formed in a predetermined height range of the lower half portion of the outer peripheral surface of the internal body 15 is screw-engaged with the internal thread portion 12 of the external body 11, and the internal body 15 is attached to the external body 11 by a jig or the like. By rotating with respect to the inner body 15, the inner body 15 can be moved in the vertical direction.

  An iron lid receiving frame portion 17 having an opening 18 is formed at the upper end portion of the internal main body 15. As shown in FIG. 1, the iron lid 20 is fitted and supported by the periphery of the opening 18 so as to be opened and closed. In the illustrated example, the iron lid 20 is freely connected to the iron lid receiving frame portion 17 so as to be openable and closable via a hinge made of a rod-like coupling member 21 engaged at both ends. By connecting with the rod-shaped connecting member 21, the work can be performed in an open state while the iron cover 20 is connected to the iron cover receiving frame portion 17. In addition, a releasable jig insertion hole (opening) 23 is formed in the vicinity of the end of the iron lid 20 opposite to the connecting member 21 so as to be automatically closed when a weight 22 supported so as to be able to swing is brought into contact therewith. Has been. The iron lid 20 can be opened by engaging and lifting the jig or tool to the peripheral edge of the opening 23. A sealing member 24 made of an annular rubber-like elastic body is attached to the upper end portion of the outer main body 11 by press-fitting or bonding or the like to prevent inflow of earth and sand from the space between the inner main body 15 and the like.

  A pressing mechanism 30 for fixing the internal body 15 to the external body in a non-rotating state is provided on the inner peripheral surface of the height region where the male screw portion 16 of the internal body 15 is formed. In the example shown in the figure, the pressing mechanism 30 is provided at three positions in the circumferential direction of the inner peripheral surface of the inner body 15, that is, at three locations. Each pressing mechanism 30 has the same configuration. Next, the pressing mechanism 30 will be described. Although only one pressing mechanism 30 will be described here, the other pressing mechanisms have the same configuration and operate in the same manner.

  Formed on the inner peripheral surface of the inner body 15 is a guide portion 33 having a horizontal penetrating cavity 32 constituting a radial guide surface 31 formed of an inner wall surface having a rectangular cross section. The through cavity 32 passes through the inner body 15 and opens to the inside of the outer body 11 (opening 34), and communicates with the inner surface of the inner body 15. A pressing member 35 that is movable along the radial guide surface 31 is mounted inside the through-cavity 32. The pressing member 35 is mounted so as to protrude into the external main body 11 through the opening 34 and to be pressed against the inner surface of the external main body 11 when moved outward in the radial direction.

  The pressing member 35 is formed with an inclined through hole 36 having an inclined surface that forms a guide surface that penetrates in the vertical direction and is inclined in the radial direction of the inner body 15. The inclined through-hole 36 has a rectangular cross section and is inclined downward and outward in the radial direction. A block-like actuating member 38 having the same cross-sectional shape (rectangular cross-section) is slidably fitted into the inclined through hole 36. The actuating member 38 has a radially inner and outer surface inclined in the radial direction in the same manner as the inclined surface (guide surface) of the inclined through-hole 36, and is fitted and mounted so that it moves in the up-down direction and simultaneously in the radially inclined direction. Has been. In the illustrated example, the pressing member 35 moves radially outward when the operating member 38 moves upward, and the pressing member 35 moves radially inward when the operating member 38 moves downward. .

  A hole (referred to as a female screw hole) 39 having a female screw and penetrating in the vertical direction is formed in the operating member 38. Further, a through hole 41 in the vertical direction is formed in the guide portion 33 formed on the inner peripheral surface of the inner main body 15. The through hole 41 passes through the portion where the through cavity 32 is formed, and is formed by an upper through hole 41a and a lower through hole 41b. Therefore, a screw-like male screw member 42 inserted into the upper through hole 41a and the lower through hole 41b of the guide portion 33 is attached to the screw of the female screw hole 39 of the operating member 38. The male screw member 42 has a head portion 43 facing upward, and a lower portion projecting downward from the lower surface of the guide portion 33, and a nut 44 is screw-engaged with the downward projecting portion. The nut 44 is predetermined with respect to the male screw member 42 by a set pin 45 such as a split pin.

  A washer (washer) 46 a is attached between the head 43 of the male screw member 42 and the upper surface of the guide portion 33, and a washer 46 b is attached between the nut 44 and the lower surface of the guide portion 33. The nut 44 is positioned and mounted at a position where the guide portion 33 is not tightened. When the male screw member 42 is rotated with a tool or the like in the assembled state, the male screw member freely rotates. On the other hand, the male screw member 42 is screw-engaged with the actuating member 38. Therefore, the actuating member 38 can be moved in the vertical direction by rotating the male screw member 42. That is, the male screw member 42 is screw-engaged with the female screw hole 39 of the actuating member 38 and is rotatably supported by the internal body 15 in a state where movement in the vertical direction is prohibited. Accordingly, by rotating the male screw member 42 in one direction, the operating member 38 is moved downward, whereby the pressing member 35 is moved radially inward along the guide surface 31 of the through-cavity 32 (in the center of the inner body 15). Can be moved). Further, by rotating the male screw member 42 to the other side, the operating member 38 is moved upward, whereby the pressing member 35 is moved radially outward along the guide surface 31 of the through-cavity 32, and is externally passed through the opening 34. It can be pressed against the inner surface of the main body 11.

  By rotating the male screw member 42 in one direction and moving the pressing member 35 radially outward to press the external main body 11, the internal main body 15 can be held against the external main body 11 in a non-rotating state. That is, the inner main body 15 can be pressed and fixed in a non-rotating state. Further, the rotation prevention state of the inner main body 15 with respect to the outer main body 11 can be released by rotating the male screw member 42 in the opposite direction and moving the pressing member 35 inward in the radial direction. As described above, the inner body 15 is provided with the above-described pressing mechanisms 30 at a plurality of locations in the circumferential direction (three locations in the illustrated example). As shown in FIG. 10, by opening the iron lid 20 and rotating the male screw member 42 sequentially for each pressing mechanism 30 by a dedicated tool 50 (which may be a tool or a jig) from the ground, The detent state with respect to the main body 11 is released or fixed. Thereby, while preventing the fluctuation | variation of the height of an internal main body by a vibration or an impact, the vertical position of an upper main body can be easily adjusted also in the state embed | buried in the ground at the time of construction and raising.

  According to the embodiment described above, the pressing member 35 is moved in the radial direction via the inclined surface (inclined through hole 36) by rotating the male screw member 42 and displacing the operating member 38 in the vertical direction. It is configured. The male screw member 42 is rotated to move the pressing member 35 radially outward, and the pressing member 35 is pressed against the outer main body 11 to hold the inner main body 15 in a non-rotating state with respect to the outer main body 11. It is configured as follows. Furthermore, the rotation prevention state with respect to the external main body 11 of the internal main body 15 is cancelled | released by rotating the male screw member 42 to an opposite direction, and moving the press member 35 to radial inside. According to such a configuration, as described above, it is possible to prevent fluctuations in the height of the upper main body due to vibrations and impacts, and to easily adjust the vertical position of the upper main body even in a state where it is buried in the ground during construction or raising the height. An embedded enclosure is provided.

DESCRIPTION OF SYMBOLS 11 External main body 12 Female thread part 15 Internal main body 16 Male screw part 17 Iron cover receiving frame part 20 Iron cover 30 Press mechanism 33 Guide part 34 Opening 35 Press member 36 Inclined through-hole 38 Actuating member 42 Male screw member 44 Nut 45 Stop pin

JP-A-60-043537 Japanese Patent Laid-Open No. 10-292409

Claims (2)

In the buried case where the iron lid is attached to the upper end of the same height as the ground,
A cylindrical outer body having a female screw portion formed on the inner peripheral surface, a male screw portion formed on the outer peripheral surface and capable of being screw-engaged with the female screw portion, and having an iron lid receiving frame portion at the upper end portion An internal body, and an iron lid supported by the iron lid receiving frame portion,
A pressing member attached to the inner body so as to be movable in a radial direction through an opening formed in the inner body;
An operating member having a female screw hole penetrating in the vertical direction and mounted so as to be movable in a radially oblique direction by sliding along a radially inclined surface formed in the pressing member;
A male screw member that is threadably engaged with the female screw hole of the actuating member and is rotatably supported by the inner body in a state in which vertical movement is prohibited;
Have
By rotating the male screw member and moving the operating member in the vertical direction, the pressing member is moved in the radial direction via the inclined surface,
Rotating the male screw member to move the pressing member radially outward, and pressing the pressing member against the outer body to hold the inner body against the outer body in a detent state. Characteristic buried enclosure.   The embedded state according to claim 1, wherein the rotation prevention state of the inner body with respect to the outer body is released by rotating the male screw member in the opposite direction to move the pressing member radially inward. Case.

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