JP3621276B2 - Iron lid receiving frame raising device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an apparatus for raising an iron lid receiving frame installed at an upper end portion of a hollow structure such as a buried case or a manhole buried underground.
[0002]
[Prior art]
An underground pipe for supplying water, gas, electricity, etc. is buried underground in an urban area or its suburbs. These laying pipes are appropriately connected with control valves for flow rate control, connectors, breakers, etc., which are operated from the road surface, maintained and inspected, and these are protected and installed. Must be specified. For this purpose, hollow structures such as hollow enclosures and manholes are buried underground.
[0003]
An iron lid receiving frame for fitting and supporting an iron lid is fixed to the upper end portion of the hollow structure buried underground, and the iron lid is attached to the receiving frame so as to be opened and closed from the road surface. In this case, the iron lid receiving frame is embedded so that the upper edge thereof is substantially the same height as the road surface, and the iron lid is arranged so that the upper surface thereof is substantially the same as the road surface. It is fitted and supported in the fitted state (closed state). The iron lid is generally attached to the receiving frame so as to be openable and closable via a hinge.
[0004]
In addition, the iron lid receiving frame (and thus the iron lid) may sink from the ground (road surface) or may float from the ground depending on the condition of the surrounding ground and usage. When this sinking or lifting exceeds a certain amount, repair work is required to excavate the surrounding ground and raise or lower the iron lid receiving frame. The present invention relates to an iron lid receiving frame raising device for adjusting the height by raising or lowering the iron lid receiving frame as described above.
[0005]
[Problems to be solved by the invention]
However, in the conventional method of raising the iron lid receiving frame, one or more height adjusting members made of concrete blocks having the same cross-sectional shape as the buried structure are inserted below the iron lid receiving frame, and these are inserted into the bolts / Since the construction method of fastening with nuts etc. is adopted, it is necessary to prepare multiple types of adjustment members according to the shape dimensions and raising amount of the iron lid receiving frame, the inventory of adjustment members increases, There are issues to be solved, such as preparation and on-site construction requiring a lot of time.
[0006]
The present invention has been made in view of such technical problems, and an object of the present invention is to raise the iron lid receiving frame easily and quickly by a simple operation on site without requiring an extra adjusting member. An object of the present invention is to provide an iron lid receiving frame raising device capable of performing work.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the present invention (Claim 1) is an apparatus for raising an iron lid receiving frame that fits and supports an iron lid at a position substantially the same as the ground at the upper end of a hollow structure embedded underground. And holding the iron lid receiving frame at a position spaced from the upper end surface of the hollow structure so that the height thereof can be adjusted, and mounting an inner shield packing on the inner peripheral surface of the hollow structure and the iron lid receiving frame. An outer shield packing is attached to the outer peripheral surface of the hollow structure and the iron lid receiving frame, and both ends of the ring-shaped member are engaged with ring-shaped members that are elastically deformable with both ends open. An adjustment ring having a structure provided with holding means for restricting the direction deformation is provided, and the holding means is fixed to one end portion of the ring-shaped member via a support bracket so that the position in the front-rear direction can be adjusted. Adjusting bolts, An open end receiving portion fixed to the tip of the adjusting bolt, a swinging member pivotally supported by the other end of the ring-shaped member so as to be rotatable in a horizontal direction, a tip end of the swinging member, and the And a pressing member that is rotatably pressed and engaged at both ends by a receiving portion, and pushes the swinging member and the pressing member from a straight position to a position along the inner peripheral surface of the ring-shaped member. And the inner shield packing is brought into close contact with the inner peripheral surface of the iron lid receiving frame and the inner peripheral surface of the hollow structure using the adjustment ring, and the inner shield Fluid cement is injected into an annular space between the iron cover receiving frame and the hollow structure surrounded by the packing and the outer shield packing, and the iron cover receiving frame is supported at a predetermined height position by hardening the fluid cement. To do The features.
[0008]
In addition to the structure of claim 1, the invention according to claims 2 to 4 is configured such that the hollow structure includes a main body portion and an annular member having a predetermined height stacked on the upper surface of the main body portion, and the adjustment ring. Are used, one adjustment ring is used to bring the upper part of the inner shield packing into close contact with the inner peripheral surface of the iron lid receiving frame, and the other adjustment ring is used to connect the lower part of the inner shield packing to the inner peripheral surface of the hollow structure. The above-mentioned object can be achieved more effectively by adopting a configuration in which the holding means is in close contact with each other or a configuration in which the holding means can be operated with one touch in an activated state and a non-activated state.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a longitudinal sectional view of a central portion taken along line 1-1 in FIG. 2 showing an embodiment of an apparatus for raising an iron lid receiving frame to which the present invention is applied, and FIG. 2 is an iron lid receiving frame and iron in FIG. It is a top view of a lid | cover. 1 and 2, an annular iron cover receiving frame 2 having a central opening is provided at the upper end of a hollow structure 1 made up of a buried housing and manhole buried underground. The taper surface 3 formed on the inner diameter portion is detachably fitted and supported on the outer peripheral taper surface of the iron lid 4, and in this state, the upper end opening (ground opening) of the hollow structure (underground object) 1 is formed. Closed.
[0010]
As shown in the figure, the iron lid receiving frame 2 has a shape structure comprising a vertical cylindrical receiving frame main body portion 6 having a predetermined height and a horizontal flange portion 7 projecting radially outward from the lower end portion of the receiving frame main body portion. doing. Anchor holes 8 are formed at a plurality of positions (six locations in the example of FIG. 2) of the horizontal flange portion 7. The iron lid receiving frame 2 is fixed at the upper end of the hollow structure 1 with bolts / nuts or the like using the anchor holes 8 as necessary. The iron lid 4 is connected to the iron lid receiving frame 2 at a part of the periphery thereof by hinge means 9 and can be opened by lifting the opposite side of the hinge means 9 with a jig such as a bar. .
[0011]
In FIG. 1, reference numeral 11 denotes a road surface (ground surface), the iron lid receiving frame 2 is embedded in such a posture that its upper end surface is substantially the same height as the road surface 11, and the upper surface of the iron lid 4 is the road surface 11. It is fitted and supported on the inner diameter portion of the iron lid receiving frame 2 in such a posture as to have substantially the same height. The iron cover receiving frame 2 and the iron cover 4 are usually made of a cast product such as ductile cast iron, and the hollow structure 1 is generally formed of a fume tube, a multi-stage concrete block, an iron case, a hard plastic case, or the like. The surroundings of the hollow structure 1 and the iron lid receiving frame 2 are filled with soil.
[0012]
In this type of burial device, there may be a step between the iron cover receiving frame 2 and the ground due to road surface re-paving or road load. In such a case, from the viewpoint of removing traffic obstacles, It is necessary to raise the iron lid receiving frame 2 and eliminate the step. Therefore, the present invention provides an iron lid receiving frame raising device that does not require an extra adjustment member and can easily and quickly raise the iron lid receiving frame by a simple operation on site. Hereinafter, an embodiment of an iron lid receiving frame raising apparatus to which the present invention is applied will be described in detail.
[0013]
In FIG. 1, in this embodiment, the hollow structure 1 is composed of a main body portion 12 and an annular member (annular portion) 13 having a predetermined height stacked on the upper surface of the main body portion. The annular member 13 has a function as an adjustment ring for adjusting the height of the hollow structure 1. A plurality of (for example, three) height adjusting bolts 14 are fixed to the upper end portion of the hollow structure 1. The height adjusting bolts 14 are fixed by, for example, fastening to a female screw formed at the upper end of the hollow structure 1.
[0014]
Further, in the illustrated example, each height adjusting bolt 14 fixed to the main body portion 12 extends upward through a through hole formed in the annular member 13, and its tip portion further passes through the anchor hole 8 to the iron. It protrudes to above the horizontal flange portion 7 of the lid receiving frame 2. The horizontal flange 7 is formed with anchor holes 8 at, for example, six places. In this case, the height adjusting bolts 14 are attached using the anchor holes 8 at three of the six places. The remaining anchor holes 8 are preferably used as fluid cement injection holes, which will be described later.
[0015]
Each of the plurality of height adjustment bolts 14 includes an adjustment nut 15 that can contact the lower surface of the horizontal flange portion 7 of the iron lid receiving frame 2 and a fixing nut 16 that can contact the upper surface of the horizontal flange portion 7. Are screw-engaged (screwed). The iron lid receiving frame 2 is spaced a predetermined distance from the upper end surface of the hollow structure 1 (in the illustrated example, the upper annular portion 13) by the height adjusting bolt 14, the adjusting nut 15 and the fixing nut 16. It is held in the position. The holding position with a predetermined interval can be finely adjusted by the adjusting nut 15 and can be fixed at the position adjusted by the fixing nut 16. In the illustrated example, the fixing nut 16 is fastened through a washer 33. Further, after tightening the fixing nut 16, a nut holder 35 that engages the outer peripheral surface (hexagonal surface) of the fixing nut 16 and the protruding portion 34 of the horizontal flange 7 is fitted and mounted. The locking nut 16 is prevented from loosening.
[0016]
An inner side for shielding the inner peripheral surface within a predetermined height range from the inner peripheral surface of the hollow structure 1 (in the illustrated example, the annular member 13 on the upper portion thereof) to the inner peripheral surface of the iron lid receiving frame 2. A shield packing 17 is attached. On the other hand, an outer shield packing 18 for shielding the outer peripheral surface is mounted in a predetermined height range from the outer peripheral surface of the hollow structure 1 to the outer peripheral surface of the iron lid receiving frame 2. The inner and outer shield packings 17 and 18 are formed of a rubber-like elastic material or sponge-like member that can be in close contact with inner and outer peripheral surfaces. The outer shield packing 18 is tightly fitted to the outer peripheral surfaces of the hollow structure 1 and the iron lid receiving frame 2 by its own elastic force. On the other hand, the inner shield packing 17 is in close contact with the inner peripheral surface of the iron lid receiving frame 2 and the inner peripheral surface of the hollow structure 1 by two adjusting rings 20, 20 contacting the upper and lower portions. It is pressed.
[0017]
The adjustment rings 20 and 20 have substantially the same configuration, and the description is common to both unless otherwise specified. The adjustment ring 20 has a structure in which an elastically deformable ring-shaped member 21 having both ends open is provided with holding means 22 that engages both ends of the ring-shaped member to restrict inward deformation of the ring-shaped member. ing. 3 is a partial side view showing the configuration of the holding means 22 as viewed from line 3-3 in FIG. 1, and FIG. 4 is a perspective view showing a single member of the ring-shaped member 21 in FIG. The ring-shaped member 21 is formed by bending a metal band-shaped member such as stainless steel or normal steel. For example, the ring-shaped member 21 changes its degree of curvature by elastically displacing the open portions between both ends. Thus, the radius of curvature can be easily increased / decreased (expanded / contracted).
[0018]
The holding means 22 is provided on the inner surface (back surface) of both end portions of the ring-shaped member 21. Next, the structure of the holding means 22 will be described in detail with reference to FIGS. 1 and 3, a bolt support bracket 23 having standing portions 23a and 23b at the front and rear is fixed to the inner surface of one end portion (the right end portion in FIG. 1) of the ring-shaped member 21 by welding or the like. A bolt insertion hole is formed in one upright portion (front upright portion) 23a, and a screw hole (in a position coaxial with the bolt insertion hole in the other upright portion (back upright portion) 23b. Female thread) is formed. The bolt support bracket 23 is fitted with an adjusting bolt 24 so as to pass through the bolt insertion hole and to be threaded into the screw hole (a state in which the screw is engaged and penetrated).
[0019]
The front end of the adjustment bolt 24 (left end in FIG. 1) is opened by fixing a metal fitting having a substantially U-shaped receiving portion as viewed from the side (vertical direction in FIG. 1) by welding or the like. A shaped receiving portion 25 is provided. Two nuts (lock nuts) 26 and 26 are screwed onto the adjustment bolt 24 with the rear standing portion 23b interposed therebetween. The adjustment bolt 24 is secured to the bolt support bracket 23 by the lock nuts 26 and 26. It is being fixed so that position adjustment in the front-back direction is possible. That is, the position of the receiving portion 25 in the front-rear direction can be adjusted by adjusting the position of the adjusting bolt 24.
[0020]
1 and 3, a fulcrum bracket 28 for forming a fulcrum 27 made of a shaft member such as a pin is formed on the inner surface of the other end (the left end in FIG. 1) of the ring-shaped member 21. The fulcrum 27 is pivotally supported by a swinging member 29 that is rotatable about the fulcrum. A lateral hole (shaft support hole) 30 is formed at a position in the vicinity of the distal end of the swing member 29 (position closer to the distal end). The lateral hole 30 is formed by bending a steel wire into a quadrangle. A rectangular pressing member 31 is pivotally supported.
[0021]
The distal end portion of the pressing member 31 has a shape that can be brought into an abutting state by being fitted into the receiving portion 25 of the distal end portion of the adjustment bolt 24 supported on the other end side of the ring-shaped member 21. That is, the holding means 22 is configured to be able to press-engage with both end portions of the ring-shaped member 21 in a state where the diameter of the outer peripheral surface of the ring-shaped member 21 is regulated within a predetermined range. A knob portion 32 for turning the swing member 29 by hand is provided at the tip of the swing member 29.
[0022]
The usage mode of the adjusting ring 20 is as follows. That is, after the inner shield packing 17 is mounted in a predetermined height range from the inner peripheral surface of the hollow structure 1 (in the example of FIG. 1, the upper annular member 13) to the inner peripheral surface of the iron lid receiving frame 2. In this state, one adjustment ring 20 is applied to the inner peripheral surface of the inner shield packing 17 corresponding to the iron lid receiving frame 2, and the swing member 29 and the pressing member 31 are placed inside the ring-shaped member 21. The tip of the pressing member 31 is engaged with the receiving portion 25 after being rotated to some extent toward the peripheral surface, and then the swinging member 29 and the pressing member 31 are folded from the straight position to the opposite side. When further pushed to a position along the inner peripheral surface of the ring-shaped member 21 so as to be in a state, the swinging member 29 and the pressing member 31 are pressed and engaged with the receiving portion 25 in a stable state, Inside Over field packing 17 is pressed (pressed) on the inner peripheral surface of the iron cover receiving frame 2 by the outer peripheral surface of the ring-shaped member 21 is close contact with the iron cover receiving frame 2.
[0023]
Further, another adjustment ring 20 is applied to the inner peripheral surface of the inner shield packing 17 corresponding to the hollow structure 1 (the upper annular member 13 in the example of FIG. 1). As in the case of the above, when the rocking member 29 and the pressing member 31 are rotated to some extent toward the inner peripheral surface of the ring-shaped member 21, the tip end portion of the pressing member 31 is engaged with the receiving portion 25. Then, when the rocking member 29 and the pressing member 31 are further pushed to a position along the inner peripheral surface of the ring-shaped member 21 so as to be folded from the straight position to the opposite side, the rocking member 29 And, the pressing member 31 is pressed and engaged with the receiving portion 25 in a stable state, and the inner shield packing 17 is pressed (pressed) against the inner peripheral surface of the hollow structure 1 by the outer peripheral surface of the ring-shaped member 21. Which is close contact with the hollow structure 1. The operation of setting (setting) the holding means 22 in this way can be performed by a very simple one-touch operation, as is apparent from the structure shown in the drawing.
[0024]
Thus, by attaching the inner sealed packing 17 to the inner peripheral surface and the outer shield packing 18 in close contact with the outer peripheral surface, the lower surface of the iron lid receiving frame 2 and the hollow structure 1 (in the example of FIG. An annular space A (FIG. 1) surrounded by inner and outer shield packings 17 and 18 is formed between the upper annular member 13). Therefore, the fluid cement is injected into the annular space A through the anchor holes 8 (the remaining anchor holes 8 through which the height adjusting bolts 14 are not inserted) of the horizontal flange 7 of the iron lid receiving frame 2. When the fluid cement is hardened, the iron lid receiving frame 2 is supported at a predetermined height adjusted by the height adjusting bolt 14 and the adjusting nut 15. That is, the iron lid receiving frame 2 is raised to a predetermined height position with respect to the ground.
[0025]
After the raising of the iron cover receiving frame 2 is finished, the holding means 22 can be deactivated by a simple one-touch operation by pinching the knob portion 32 and turning the swinging member 29 inward, thereby holding it. By deactivating means 22, the adjusting ring 20 can be removed immediately. Also, the inner and outer shield packings 17, 18 can be easily removed. Thus, after removing each adjustment ring 20 and the inner and outer shield packings 17 and 18, soil is embedded in the periphery, and the soil is filled, so that the iron lid receiving frame 2 (and hence the iron lid 4) is raised. Construction is complete.
[0026]
According to the iron lid receiving frame raising device described above, the holding means for engaging the both ends of the ring-shaped member with the elastically deformable ring-shaped member 21 open at both ends to restrict the inward deformation of the ring-shaped member. The adjustment ring 20 having the structure 22 is used, and the inner shield packing 17 for forming the annular space A for injecting the fluid cement for raising the bulk is used for the iron lid receiving frame 2 and the hollow structure 1 by the adjustment ring 20. Since the inner cover surface of the iron cover receiving frame 2 is pressed and brought into close contact with the inner peripheral surface of the iron cover receiving frame 2 without the need for an extra adjusting member, the iron cover receiving frame 2 can be easily and quickly raised by a simple operation on site. A raising device is provided.
[0027]
Further, since the holding means 22 is configured so that the position (projection amount) of the receiving portion 25 can be adjusted by the adjusting bolt 24, the inward elastic deformation restricting position of the ring-shaped member 21 (the Even if the diameters of the inner peripheral surface of the iron lid receiving frame 2 and the inner peripheral surface of the hollow structure 1 are different (change), the inner peripheral surface of the ring-shaped member 21 can be adjusted. If there is, it can be easily adjusted appropriately to cope with it.
[0028]
In the above-described embodiment, the case where the hollow structure 1 includes the main body portion 12 and the height adjusting annular member 13 is illustrated. However, in the present invention, the height adjusting annular member 13 is omitted, and the hollow structure 1 The same can be applied to the case where 1 is constituted only by the main body portion 12, and the same effect can be obtained.
[0029]
【The invention's effect】
As is apparent from the above description, according to the present invention (Claim 1), the iron lid receiving frame for fitting and supporting the iron lid at a position substantially the same height as the ground at the upper end portion of the hollow structure buried underground. The iron cover receiving frame is held at a position spaced a predetermined distance from the upper end surface of the hollow structure so that the height can be adjusted, and an inner shield packing is provided on the inner peripheral surface of the hollow structure and the iron cover receiving frame. At the same time, an outer shield packing is mounted on the outer peripheral surface of the hollow structure and the iron lid receiving frame, and both ends of the ring-shaped member are engaged with an elastically deformable ring-shaped member with both ends open. An adjustment ring having a structure provided with a holding means for restricting inward deformation of the member is provided, and the holding means can be adjusted in the longitudinal direction along the ring-shaped member via a support bracket at one end of the ring-shaped member. Adjustment button fixed to A receiving portion having an open end fixed to the tip of the adjustment bolt, a swinging member pivotally supported by the other end of the ring-like member in a horizontal direction, A pressing member rotatably pressed and engaged at both ends by a tip portion and the receiving portion, and the swinging member and the pressing member from a straight position to a position along the inner peripheral surface of the ring-shaped member The inner shield packing is closely attached to the inner peripheral surface of the iron lid receiving frame and the inner peripheral surface of the hollow structure using the adjusting ring. Fluid cement is injected into an annular space between the iron cover receiving frame and the hollow structure surrounded by the inner shield packing and the outer shield packing, and the iron cover receiving frame is raised to a predetermined height by hardening the fluid cement. Position Because it is configured to support, even if the inner diameter of the iron lid receiving frame or the hollow structure is different, an extra adjustment member is not required, and the iron lid receiving frame can be raised easily and quickly with a simple operation on site. An apparatus for raising an iron lid receiving frame is provided.
[0030]
According to the second to fourth aspects of the present invention, in addition to the structure of the first aspect, the hollow structure includes a main body portion and an annular member having a predetermined height stacked on the upper surface of the main body portion. The two adjustment rings are used, the upper part of the inner shield packing is brought into close contact with the inner peripheral surface of the iron lid receiving frame by one adjustment ring, and the lower part of the inner shield packing is fixed to the hollow structure by the other adjustment ring. Since the holding means is configured to be operated with one touch in an activated state and a non-activated state, an iron lid receiving frame raising device capable of achieving the above effect more efficiently is provided. .
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a central portion taken along line 1-1 in FIG. 2, showing an embodiment of an apparatus for raising an iron lid receiving frame to which the present invention is applied.
FIG. 2 is a plan view of the iron lid receiving frame and the iron lid of FIG. 1;
FIG. 3 is a partial side view showing the configuration of the holding means as seen from line 3-3 in FIG.
4 is a perspective view showing a single member of the ring-shaped member in FIG. 1. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Hollow structure 2 Iron lid receiving frame 4 Iron lid 6 Reception frame main-body part 7 Horizontal flange part 8 Anchor hole 11 Ground (road surface)
12 Body part (hollow structure)
13 Ring member (hollow structure)
14 Height adjustment bolt 15 Adjustment nut 16 Fixing nut 17 Inner shield packing 18 Outer shield packing 20 Adjustment ring 21 Ring-shaped member 22 Holding member 23 Bolt support bracket 24 Adjustment bolt 25 Receiving portion 26 Nut (lock nut)
27 fulcrum 29 swing member 30 shaft support hole 31 pressing member 32 knob portion 35 nut holder

Claims (4)

In the iron lid receiving frame raising device for fitting and supporting the iron lid at a position substantially the same height as the ground at the upper end of the hollow structure buried underground,
Holding the iron lid receiving frame at a position spaced from the upper end surface of the hollow structure so that the height can be adjusted , and mounting an inner shield packing on the inner peripheral surface of the hollow structure and the iron lid receiving frame, An outer shield packing is attached to the outer peripheral surface of the hollow structure and the iron lid receiving frame, and both ends of the ring-shaped member are engaged with an elastically deformable ring-shaped member that is open at both ends, and the ring-shaped member is deformed inwardly. an adjustment ring provided structure holding means for restricting a
The holding means includes an adjustment bolt fixed to one end of the ring-shaped member via a support bracket so that the position of the ring-shaped member can be adjusted in the front-rear direction, and an open end shape fixed to the tip of the adjustment bolt A receiving member, a swinging member pivotally supported by the other end of the ring-shaped member in a horizontal direction, and a tip end of the swinging member and the receiving part, so that both ends can be rotated freely. A pressing member, and the swinging member and the pressing member are pressed from a straight position to a position along the inner peripheral surface of the ring-shaped member so that both ends are pressed and engaged in a stable state. Configured,
Using the adjustment ring, the inner shield packing is brought into close contact with the inner peripheral surface of the iron lid receiving frame and the inner peripheral surface of the hollow structure, and the iron lid receiving frame surrounded by the inner shield packing and the outer shield packing. An iron lid receiving frame raising device, wherein a fluid cement is injected into an annular space between the hollow structure and the iron lid receiving frame is supported at a predetermined height by hardening the fluid cement. 2. The iron lid receiving frame raising device according to claim 1, wherein the hollow structure includes a main body portion and an annular member having a predetermined height stacked on an upper surface of the main body portion. Two adjustment rings are used, and the upper part of the inner shield packing is brought into close contact with the inner peripheral surface of the iron lid receiving frame by one adjustment ring, and the lower part of the inner shield packing is fixed to the hollow structure by the other adjustment ring. The iron lid receiving frame raising device according to claim 1 or 2, wherein the iron lid receiving frame is closely attached to an inner peripheral surface. The iron cover receiving frame raising device according to any one of claims 1 to 3 , wherein the holding means can be operated in one operation in an activated state and a non-activated state.

Images