JP3225925B2 - Handhole for underground buried facilities and its construction method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a handhole buried underground to accommodate underground buried facilities, and a method of constructing the same.

[0002]

2. Description of the Related Art First, a manhole pump control panel, which is one of the underground burial facilities, will be described to explain the underground burial facilities to which the present invention is applied, mainly on the unique structure of the facilities. I do. As shown in FIG. 16, the manhole pump control panel A controls the sewage flowing through the sewer to the manhole M.
It is for controlling a pump P for pumping up the inside, and was initially installed directly on the ground or attached to a concrete pillar erected on the ground. However, when it is installed on the ground, the control panel itself is relatively large (width × depth × height is 70 mm).
0mm x 500mm x 1600mm)
Most of the time, with walking and traffic impairments, harming the cityscape and building private land,
There were various problems such as difficulty in securing the land.

[0003] In order to solve most of the above-mentioned problems, the idea of burying the control panel itself underground has appeared, and the present applicant has realized this. As shown in FIG. 2, this underground buried type manhole pump control panel A is composed of a control panel main body B and a bell-shaped storage container C that covers the whole of the panel from above. The parts are integrally connected via a plurality of connection bolts 24. As shown in FIG. 13, this manhole pump control panel A is entirely constructed of a handhole H buried underground.
When the control panel A is connected and fixed to the handhole H with a force greater than the buoyancy acting on the control panel A even when the control panel A is immersed in the handhole H, The air in the container C is compressed, and water only enters the storage container C by a height corresponding to the compressed amount of the air, and water infiltrates the portion of the control panel body B where various control devices are mounted. Is prevented. With this structure, even if the manhole pump control panel A is buried underground using the handhole H, the waterproofing thereof can be achieved. As one specific structure for this purpose, a plurality (usually two) of levitation prevention columns D are vertically fixed to the bottom surface of the handhole H, and the upper end thereof and the storage container C of the manhole pump control panel A are provided. Is connected integrally with the upper end portion by a connecting bolt.

[0004] Further, regarding the general structure of the manhole M and the various facilities attached thereto, as shown in FIG. 16, the manhole M and the manhole pump control panel A are:
It is embedded in the roadway R _1, sidewalk R ₂ in erected a steel column 81
The instrument storage box 82 for accommodating various transaction instruments related to manhole control is attached at a predetermined height position. Here, the manhole pump control panel A is embedded near the manhole M. The cable for supplying power to the manhole pump control panel A is housed and protected by the first cable protection pipe 83, and is connected to a cable for supplying power to the pump P in the manhole M or a water level gauge (not shown) in the manhole M and the manhole. The wiring wires connecting the pump control panel A are
It is stored and protected in the second cable protection tube 84. Further, the water accumulated in the handhole H is constructed so as to be discharged into the manhole M via a drain pipe 85 connected to the bottom thereof.

Here, a conventional method of installing and installing a manhole pump control panel A buried underground using a handhole H will be described. As shown in FIGS. 6 and 7, the handhole H has a hollow cubic handhole body 41.
And a handhole cover 44 made of cast iron for closing an insertion hole 43 provided in the upper wall portion 42. At the center of the upper surface of the upper wall portion 42 of the handhole main body 41, a ring-shaped protrusion 45 for ensuring the burying depth of the upper wall portion 42 is provided. Then, the hand hole H is carried into the underground burial site of the manhole pump control panel A, and at this installation site, the floating prevention column D is fixed to the bottom wall portion 46 of the hand hole main body 41 or the side wall portion 47 thereof is fixed. , The first and second cable protection tubes 83, 8
An insertion hole for inserting one end of 4 into the main body 41 of the handhole or an insertion hole (drainage hole) of the drain pipe 85 in the bottom plate portion 46 is formed.

For this reason, a lot of time is required for preparation work such as the above-mentioned work for fixing the floating prevention column D and the work for opening the hole in the handhole main body 41 performed at the underground burial site of the manhole pump control panel A. At the same time as the construction period was prolonged, the accuracy of each of the above operations was poor, and the work was often re-executed, resulting in poor efficiency. In particular, since the bottom surface of the handhole body 41 is inclined at the center so that water can be collected, the anti-floating column D is provided on the bottom wall 46 thereof.
Since it was necessary to slightly incline the bottom surface and fix it vertically to the absolute space, the operation was extremely troublesome.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above-mentioned problems associated with the construction of an underground burial facility using a handhole, and has been made to shorten the construction period and at the same time to attach various members to the handhole body. The task is to increase the accuracy.

[0008]

Means for Solving the Problems To solve this problem, a means adopted by the present invention is to provide an underground buried facility having a facility body and a storage container for accommodating the facility body. A method for constructing a handhole to be buried inside, wherein the ground directly supported by a bottom wall portion of the handhole body is provided.
At the time of insertion and installation of the lower burial equipment , the handhole unit is formed by attaching to the handhole body members necessary for underground burial construction of the underground burial equipment, such as a plurality of guide pillars for guiding the insertion and cable extraction pipes. And bury it in the ground.

The handhole according to the present invention is a handhole.
Insertion of the underground burial equipment directly supported by the bottom wall of the
Multiple guide columns that guide the insertion during installation
The necessary materials for the installation work of the underground
Since it is attached to the hall body, there is no need to perform the installation work of each member at the burial site of the underground burial facility,
The construction of the handhole is completed only by bringing the handhole into this site and burying it in the ground. Therefore, at the burial site of the underground burial facility, there is no need to attach guide columns to the handhole main body, and the construction period of the underground burying facility is shortened, and the accuracy of mounting various members to the handhole main body is reduced. Also increase.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in more detail by way of examples. First, an outline of a manhole pump control panel A, which is one of the underground burial facilities, will be described, and thereafter, a structure of a unit-shaped handhole H according to the present invention for accommodating the control panel A and burying it underground. Will be described in detail. FIG. 1 shows a manhole pump control panel A
FIG. 2 is a longitudinal sectional view of FIG.
FIG. 4 is a longitudinal sectional view of a separated state of a control panel body B and a storage container C constituting the control panel A, and FIG. FIG. 5 is a bottom view of the manhole pump control panel A. FIG.
In FIG. 5 to FIG. 5, a control panel main body B has a plurality of (four in this embodiment) arms 2 radially fixed to an annular body 1.
A grounding portion main body 4 having a grounding body 3 fixed to the back side of the tip end of each arm 2, and a disk-shaped horizontally disposed immediately above the grounding portion main body 4 via the same number of short struts 5 as the arms 2. , And a control device mounting plate 7 which is integrally mounted on the upper surface of the supporting table 6 along its radial direction. Various control devices 8 constituting the control panel are mounted on both side surfaces of the control device mounting panel 7. At the upper end of the control device mounting board 7, a top plate 9 having a shape such that all the control devices 8 are covered and hidden in a plan view is integrally mounted. As shown in detail in FIG. 4, the control panel main body B and the storage container C are integrally connected at the lower ends thereof to the upper surface of the distal end of each arm 2 constituting the grounding section main body 4. Connecting bracket 11 is fixed.
In FIG. 2, reference numeral 12 denotes a control panel main body B for elastically contacting a curved top plate portion 28 of the storage container C when the entire control panel main body B is covered with a bell-shaped storage container C. 1 shows a first elastic body attached to the center of the top plate 9 of FIG.

The storage container C is for covering the control panel body B as a whole from above and storing the control panel body B. The inner shape of the storage container C is such that the inner diameter of the control panel body B is a disk shape of the control panel body B. It has a bell shape slightly larger than the outer diameter of the support base 6 described above. At the lower end of the storage container C, support legs 2 are provided at a plurality of positions (four in the embodiment) along the circumferential direction.
1 are provided integrally, and between the supporting legs 21 adjacent to each other,
Cable 22 connected to each control device 8 of control panel body B
A cable insertion space 23 (see FIG. 13) into which a cable can be inserted is formed. A bolt insertion hole 25 for inserting a connection bolt 24 for integrally connecting the storage container C to the control panel body B is provided in a portion near the upper end of each support leg 21. In addition, two oppositely facing portions along the circumferential direction of the outer peripheral surface of the peripheral wall portion 26 of the storage container C, and at the upper and lower ends of each portion, a floating prevention column D is provided.
A pair of guide plates 27 each having a shape sandwiching from both sides thereof are fixed along the vertical direction. The guide plate 27 guides the insertion of the control panel A when the control panel A is inserted and accommodated in the handhole H, and at the same time, the control panel A rotates around the center of the handhole H after the accommodation. It performs the function of positioning so as not to move in the direction.

Further, as shown in FIG. 1, FIG. 13 and FIG.
And a floating prevention bracket 29 is fixed at a position in the same phase as the guide plate 27 along the circumferential direction. As shown in FIG. 15, the floating prevention bracket 29 is fixed to the portion of the storage container C having the smallest curved diameter via the pedestals 31 having different heights of both legs so as to be fixed to the portion of the storage container C having the smallest curved diameter. It is fixed to the above part. The bracket 2 on the top plate 28
A pair of lifting brackets 32 for lifting the entire control panel A are provided opposite to each other at a portion where the phase in the circumferential direction is slightly different from that of the control panel 9. As shown in FIGS. 2 and 3, a portion of the inner peripheral surface of the peripheral wall portion 26 corresponding to the height of the support base 6 of the control panel body B has a pair of elastic contacts with the upper surface of the support base 6. A second elastic body 33 is provided.

For this reason, as shown in FIG. 2, when the storage container C is covered from above the control panel main body B, the control panel main body B is formed at the first elastic body 12 and the pair of second elastic bodies 33. The storage container C elastically contacts the storage container C from above, and the support legs 21 at the lower end of the storage container C are grounded. A nut 13 is fixed on the inner surface side of the connection bracket 11 fixed to the portion of the grounding section main body 4 of the control panel main body B,
Bolt insertion hole 2 provided in each support leg 21 of storage container C
When the connection bolt 24 is inserted through the screw 5 and the connection bolt 24 is screwed to the nut 13, the control panel body B and the storage container C are integrally connected at a plurality of locations at their lower ends. In FIGS. 1, 2, 4 and 5, 3
4 denotes a wide reinforcing material welded to the outside of each support leg 21 of the storage container C. In FIG.
4 shows a collar interposed between the head of No. 4 and the connection bracket 11.

Subsequently, a unit-shaped handhole H which is an object of the present invention will be described. FIG. 6 is a perspective view of the handhole H according to the present invention, FIG. 7 is a longitudinal sectional view of the same, and FIG. 8 is a plan sectional view of the same. As described in the section of “Prior Art”, the handhole H itself includes a hollow cubic handhole body 41,
A handhole cover 44 for closing the insertion hole 43 of the upper wall portion 42 is provided.
1. Manhole pump control panel A housed inside
The necessary components for the installation of the factory are pre-installed in the factory, or the necessary holes are drilled in the same way,
The feature is that it has a unit shape.

That is, the bottom wall 46 of the handhole body 41
Has a manhole pump control panel A housed therein.
Anti-floating column D for preventing the surface from floating when inundated
Is attached in advance via a fixing bracket E, which will be described later.
Is pre-installed in a penetrating state, and a drain hole 40 is formed in the center of the bottom wall portion 46 in advance. Furthermore,
A connector storage box 49 is attached to the side wall portion 47 of the handhole main body 41 in advance. The short tubular cable lead-out tube 48 is used for pulling out the various cables 22 in the hand hole H to the outside of the hand hole H, so that the cable 22 is inserted therein, and is buried underground. The first and second cable protection tubes 83 and 84 (see FIG. 16) have substantially the same diameter as that of the first and second cable protection tubes 83 and 84, and as shown in FIG. After the installation of the handhole H, the protection tubes 83 and 84 are connected to each other via the tube connector 50 on the outer peripheral side thereof. Side wall 4 of handhole body 41
In order to penetrate and attach the cable outlet tube 48 to the cable 7, a through hole is provided in the thin portion 47 a of the side wall portion 47, and after inserting the cable outlet tube 48 into the through hole, the gap is filled with mortar or the like. And cured.

The bottom wall 46 of the handhole body 41
In order to fix the pair of floating prevention columns D to the following, it is performed as follows. Since the bottom surface 51 of the handhole body 41 is inclined at the center thereof so that water can be collected, if the anti-floating column D is directly fixed to the bottom surface 51, the anti-floating column D is inclined. Would. Therefore, FIGS.
Is used, the interval between the pair of anti-floating columns D is maintained at a set dimension L slightly larger than the outer diameter of the storage container C, and the bottom wall 46 of the handhole main body 41 Each anti-floating column D can be fixed vertically. In the fixing bracket E, a portion disposed directly above the drain hole 40 at the center of the hand hole H is bent upward in a U-shape, and an upper bent portion 5 is formed at the center in the longitudinal direction.
2 are formed, and both ends thereof are fixed via bolts 54 to a fixing plate 53 welded and fixed to the lower end surface of the anti-floating column D having a U-shaped cross section.

Using the fixing bracket E, a handhole H
In order to fix the pair of anti-floating columns D to the bottom wall portion 46 vertically with respect to the absolute space while maintaining the set dimension L, the following is performed. That is, as described above, the fixture E
Fixing plates 5 of the anti-floating columns D via bolts 54 at both ends.
3 and the drain holes 40 in each fixing plate 53 are fixed.
Between the end near the side and the bottom surface 51 of the handhole H,
Insert the raised material 55 made of a rubber plate, and
The upper bent portion 52 is disposed immediately above the drain hole 40 of the hand hole H, and the fixing plate 53 is leveled while the fixing plate 53 is horizontal. Fix to 46. The fixing bolt 56 is composed of an outer cylinder having a lower half part having a split in the axial direction and a core inserted therein, and the lower half of the outer cylinder is expanded by the core. It is a bolt with a structure to be fixed to a concrete body. Thereby, the pair of floating prevention columns D is slightly inclined with respect to the bottom surface 51 of the handhole H, is perpendicular to the absolute space, and is fixed to the bottom wall portion 46. The upper end of the floating prevention pillar D fixed to the bottom wall 46 of the handhole H in this way reaches the insertion hole 43 of the handhole main body 41 as shown in FIG. As shown in FIGS. 7 and 10, a small gap 57 is formed between the fixing bracket E and the bottom surface 51 of the handhole body 41, so that foreign matter cannot be taken out between the two. Never get into it.

As described above, the control panel A is buried underground by using the handhole H in which the members necessary for the underground burying work of the manhole pump control panel A are attached in advance at the factory to form a unit. To do so, proceed as follows. First, as shown in FIG. 11, and drilled hand hole burying holes 61 near the manhole M in road R _1, by compacting by paved Kuriishi at its bottom,
The handhole installation part 62 is formed. The first and second cable protection tubes 83 and 84 and the drain tube 85 are buried in advance. In this state, the handhole main body 41 is buried in the handhole embedding hole 61 and is hardened with mortar. Thereafter, the projecting portion 45 is filled and the road pavement is restored.
At this time, mortar is inserted between the upper wall portion 42 of the handhole main body 41 and the protruding portion 45, and the height of the protruding portion 45 is adjusted to match the height of the road. Thereby, the handhole H is buried underground.

Next, in order to insert and install the manhole pump control panel A into the handhole F buried underground, the following procedure is performed. First, as shown in FIG. 12, a cable is passed through the steel pipe column 81, the instrument storage box 82, the first cable protection tube 83, and the connector storage box 49a in this order, and the end of the cable is stored in the cable storage box 49a. Connected to the connector. In exactly the same way, the pump P, the second cable holding tube 84, the connector storage box 49b
Through the cable in this order, and connect the distal end of the cable to the connector housed in the connector housing box 49b.
Next, the manhole pump control panel A is installed on the road beside the handhole H buried underground, and the cable on the control panel A side is stored in the connector storage boxes 49a and 49b. When the manhole pump control panel A is suspended in the handhole H while being connected to the respective connectors, the control panel A is installed in the handhole H as shown in FIG. When the manhole pump control panel A is suspended in the handhole H, FIGS.
As shown in FIG. 3, each guide plate 27 provided on the outer peripheral surface of the peripheral wall portion 26 of the storage container C is
The control panel A is disposed outside the floating prevention pillar D fixed to the bottom wall 46 of the first control unit A and is guided by the floating prevention pillar D at each guide plate 27. As a result, the control panel A is installed on the bottom surface 51 of the handhole H in a state where the center thereof substantially matches the drain hole 40 of the handhole H and the phase in the circumferential direction is determined as set.

Thereafter, as shown in FIGS. 14 and 15, a bracket 2 for preventing floating at the upper end of the storage container C is provided.
9 and the upper end of the levitation prevention column D are connected via the connection bolt 63, the control panel A and the levitation prevention column D are integrally connected to each other at their upper ends. Even if the buoyancy of the intruded water acts on the control panel A, the control panel A does not float. Control panel A and manhole M
After the wire connection work is performed between the cable outlet pipe 48 and the instrument storage box 82 side, the cable outlet pipes 48 and the first and second cable protection pipes 8 are provided outside the handhole H.
3, 84 via the tube connector 50, and finally,
The handhole cover 4 is inserted into the insertion hole 43 of the handhole body 41.
4 and cover the soil around the handhole H.
When the handhole H is hung and installed in the handhole installation part 62, the upper end of the drain pipe 85 previously buried underground is inserted into the drain hole 40, and after the handhole H is installed. In this case, the excess length of the drain pipe 85 is cut off, and the drain pipe 85 and the drain hole 40 are removed.
Is filled with mortar or the like and repaired.

In the above embodiment, the manhole pump control panel A is described as an example of the underground buried facility, and the manhole pump control panel A has been described. The handhole according to the present invention and the method for constructing the same can be applied to any equipment as long as the equipment is buried underground.

[0022]

The handhole according to the present invention is a handhole.
Of the underground burial facility directly supported by the bottom wall of the
Multiple guide columns that guide the insertion during insertion installation
The members required for installation of underground burial equipment such as
Since it is attached to the doorhole body, it is not necessary to perform each of these operations at the burial site of underground burial equipment,
The construction of the handhole is completed only by bringing the handhole into this site and burying it in the ground. Therefore, at the burial site of the underground burial facility, the work of mounting the guide pillar to the handhole body becomes unnecessary, and the construction period of the underground burial facility is shortened, and the mounting of various members to the handhole body is performed. The accuracy of is also increased.

[Brief description of the drawings]

FIG. 1 is a perspective view of a manhole pump control panel A.

FIG. 2 is a longitudinal sectional view of the same.

FIG. 3 is a vertical sectional view of a control panel main body B and a storage container C constituting a manhole pump control panel A in a separated state.

FIG. 4 is an enlarged view of a connecting portion between a control panel main body B and a storage container C in FIG.

FIG. 5 is a bottom view of the manhole pump control panel A.

FIG. 6 is a perspective view of a handhole H according to the present invention.

FIG. 7 is a longitudinal sectional view of the same.

FIG. 8 is a plan sectional view of the same.

FIG. 9 is a perspective view of a state in which a pair of floating prevention columns D are fixed to a bottom wall portion 46 of the handhole main body 41 using a fixing bracket E.

FIG. 10 is a sectional view of the same.

FIG. 11 is a sectional view showing a method for constructing a handhole H according to the present invention.

FIG. 12 is a cross-sectional view illustrating a method of inserting a manhole pump control panel A into a handhole H buried underground.

FIG. 13: Manhole pump control panel A is handhole H
FIG. 4 is a cross-sectional view of a state in which the device is housed in a basement and buried underground.

FIG. 14 is a plan view showing a state in which a manhole pump control panel A is installed on a handhole H;

FIG. 15 is an enlarged sectional view taken along line YY of FIG. 13;

FIG. 16 is a conceptual diagram of installation of a manhole M and a manhole pump control panel A.

[Explanation of symbols]

 A: Manhole pump control panel (underground burial equipment) B: Control panel body (equipment body) C: Storage container D: Floating prevention pillar (guide pillar) H: Hand hole 40: Drain hole 41: Hand hole body 46: Hand hole Bottom wall of main unit 47 Side wall of handhole main unit 48: Cable outlet pipe 49a, 49b: Connector storage box

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-9-165816 (JP, A) JP-A-2-58076 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) E03F 5/22

Claims (3)

(57) [Claims] 1. A handhole buried underground for accommodating an underground buried facility including an equipment main body and a storage container for accommodating the equipment main body, wherein the handhole is directly attached to a bottom wall portion of the handhole main body. The underground buried supported
A handhole for an underground buried facility, wherein a plurality of guide columns for guiding the insertion when the installation facility is inserted are integrally attached to a bottom wall of the handhole body. 2. The handhole for underground buried facilities according to claim 1, wherein the storage container has a bell shape. 3. A facility body, in order to accommodate the underground facility and a container for accommodating the equipment body, a method of constructing the hand hole being underground, the bottom wall of the hand-hole body The underground support directly supported by the section
At the time of inserting the installation equipment , the handhole is made into a unit shape by attaching to the handhole body members necessary for the underground installation work of the underground installation equipment, such as a plurality of guide columns, cable extraction pipes, etc. , that guide the insertion. And a method for constructing a handhole for underground burial equipment, which is buried underground.