JP3871233B2 - Insulation equipment for lids for underground structures - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a heat insulating device for an underground structure lid used for an underground structure lid installed at an upper end portion of an underground structure.
[0002]
As used herein, “underground structure lid” refers to a large iron lid, a manhole lid, a sewage culm lid, an electric / Openable and closable joint gutter lids, power transmission iron lids, power distribution iron lids, buried conduits under the road surface in waterworks and gas pipes, and their associated devices, which protect underground facilities equipment and underground cables, etc. in communications A fire hydrant lid, a water control valve lid, a gate valve lid, an air valve lid, a gas pipe lid, a water meter lid, etc., that function as an open / close door.
[0003]
[Prior art]
The lid for an underground structure consists of a receiving frame installed at the upper end of the underground structure and a lid body supported by the receiving frame, and is installed so that the upper surface of the lid body is exposed to the ground surface. Most of the structural lids are made of metal such as cast iron with good thermal conductivity.For example, in the case of a manhole lid, only the top surface of the lid body melts due to the heat of warm water passing through the sewer during snowfall. As a result, there is a case where a step is produced at the boundary with the surrounding snow portion, which may hinder the passage of vehicles and pedestrians.
[0004]
Therefore, conventionally, for example, as described in Japanese Utility Model Laid-Open No. 64-14246, an inner lid made of a synthetic resin foam is fitted into the opening of the manhole body so that the space between the manhole interior and the outer lid is between. A structure that insulates and prevents snow melting is known.
[0005]
[Problems to be solved by the invention]
However, in the above-mentioned publication, the inner lid is formed of a soft synthetic resin foam to improve heat insulation, so that an operator may mistakenly when opening / closing the outer lid or after opening the outer lid. If it is placed on the inner lid, it may fall into the manhole. In addition, when the inner lid is connected to the outer lid, the inner lid is removed when the outer lid is opened.
[0006]
The problem to be solved by the present invention is to provide a heat insulating device for a lid for an underground structure that has a structure for preventing falling into the underground structure and a heat insulating structure between the interior of the underground structure and the lid for the underground structure. There is to do.
[0007]
[Means for Solving the Problems]
The heat insulating device for a lid for an underground structure according to the present invention is a lid for an underground structure comprising a fall prevention lid that is detachably locked to a mounting seat of a receiving frame, and a heat insulation lid that is connected to the bottom of the fall prevention lid. In the heat insulating device, the heat insulating lid is connected to the fall prevention lid so as to be horizontally rotatable .
[0008]
Thereby, while being able to insulate between the inside of an underground structure and the lid | cover for underground structures, falling into an underground structure can be prevented. Furthermore, after the heat insulating lid is attached to the opening of the underground structure, the fall prevention lid can be rotated and aligned, so that it can be easily locked to the mounting seat of the receiving frame.
[0009]
In addition, the heat insulating device for a lid for an underground structure according to the present invention is an underground structure comprising a fall prevention lid that is detachably locked to a mounting seat of a receiving frame, and a heat insulation lid that is connected to the bottom of the fall prevention lid. In the heat insulation device for a lid, the heat insulation lid is sandwiched and connected between the upper support member and the lower support member below the fall prevention lid.
[0010]
This also makes it possible to insulate between the inside of the underground structure and the lid for the underground structure, and prevent falling into the underground structure. Further, the heat insulating lid is prevented from wobbling and the heat insulating device can be easily attached and detached.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
In the present invention, when the heat insulating lid is formed of a flexible material, the lower support member is connected to the fall prevention lid so as to be vertically movable, and the lower support member is raised to the upper support member or the lower support member. The cavity part in which a heat insulation lid | cover enters is formed. With such a configuration, the heat insulating lid can be bent when the lower support member is raised, so that the heat insulating device can be attached and detached more easily.
[0012]
Even if the upper support member is connected to the fall prevention lid so as to be movable up and down, and the upper support member or the lower support member is formed with a cavity portion into which the heat insulation lid enters when the upper support member is lowered, the upper support member Since the heat insulating lid can be bent when the cover is lowered, the heat insulating device can be attached and detached more easily.
[0013]
【Example】
FIG. 1 shows a state in which the heat insulating device for an underground structure lid according to the present invention is attached to a receiving frame, FIG. 1- (a) is a plan view thereof, and FIG. 1- (b) is an A- view of FIG. A sectional view, FIG. 2 is a plan view of a receiving frame, FIG. 3 shows a heat insulating device for a lid for an underground structure of the present invention, FIG. 3- (a) is its plan view, and FIG. 3- (b) is FIG. It is BB sectional drawing of (a).
[0014]
In FIG. 1, a heat insulating device 1 (hereinafter simply referred to as “heat insulating device 1”) for a lid for an underground structure is locked to a receiving frame 3 fixed to an upper side block 2 of the underground structure. In FIG. 1, the lid body supported by the receiving frame 3 is omitted.
[0015]
As shown in FIG. 2, six mounting seats 4 for locking the heat insulating device 1 are provided on the inner peripheral surface of the receiving frame 3 at equal intervals. These mounting seats 4 have a horizontal arcuate shelf 4a projecting inward and a projection 4b projecting upward from the arcuate shelf 4a.
[0016]
As shown in FIG. 3, the heat insulation device 1 includes a fall prevention lid 5 and a heat insulation lid 8 connected to the bottom thereof.
[0017]
The fall prevention lid 5 includes a lid body 5a formed in a mesh shape and a plate-like engagement tool 6 raised integrally from the outer peripheral edge of the lid body 5a. 3 is provided with a notch 6a that can be fitted to the protrusion 4b of the mounting seat 4 formed in the structure 3.
[0018]
The fall-preventing lid 5 is made of a material and a structure that can withstand enough even if a person is placed. In this embodiment, the fall-preventing lid 5 is formed of a hard synthetic resin (polypropylene), and the lid 5a Reinforcing ribs 7 are provided in a lattice shape on the bottom surface.
[0019]
Further, the fall prevention lid 5 is provided with handles 5b, 5b for easy carrying and handling.
[0020]
The heat insulating lid 8 is a disk-like lower support provided at the lower part of a bolt 12 as a support shaft inserted into a ring-shaped upper support member 10 provided on the lower surface of the lid 5a and a central through hole 9 of the lid 5a. It is clamped by the member 11 and is connected to the fall prevention lid 5 via a bolt 12 so as to be horizontally rotatable. The lower support member 11 is supported by a nut 13 that is screwed into the lower portion of the bolt 12. By rotating the nut 13, the heat insulation cover 8 is clamped with an appropriate force according to the thickness of the heat insulation cover 8. can do.
[0021]
The size of the heat insulating lid 8 is such that the opening of the upper side block 2 can be sealed as shown in FIG. 1, and a flexible material having a heat insulating property in order to enhance the sealing property and heat insulating property (this embodiment In the case of foamed polyethylene).
[0022]
In the above configuration, when the heat insulating device 1 is attached to the receiving frame 3, the gripper 5 b, 5 b is used to push the heat insulating lid 8 into the opening of the upper side lump 2, and then the engaging tool 6 provided on the fall prevention lid 5. The notch 6a may be fitted in accordance with the projection 4b of the mounting seat 4 provided on the receiving frame 3, and when it is removed, it may be lifted as it is with the grips 5b and 5b.
[0023]
In this embodiment, since the heat insulating cover 8 is sandwiched between the upper support member 10 and the lower support member 11, the heat insulating cover 8 is prevented from wobbling when being pushed into the opening of the upper side lump 2, and the heat insulating cover 8 is smoothly moved. Can be installed. Further, since the heat insulating lid 8 is connected to the fall prevention lid 5 so as to be horizontally rotatable, the fall prevention lid 5 is horizontally rotated after the heat insulation lid 8 is attached to the opening of the upper side lump 2. The position of the notch 6b of the fitting 6 can be easily adjusted to the position of the protrusion 4b of the mounting seat 4.
[0024]
FIG. 4 is a sectional view showing another embodiment of the heat insulating device for the underground structure lid of the present invention. The same parts as those in the above embodiment are denoted by the same reference numerals, and the description thereof is omitted.
[0025]
In the embodiment shown in FIG. 4, a disk-like lower support member 11 is connected to the fall prevention lid 5 so as to be movable up and down, and the upper support member 10 is provided with a hollow portion 10 a that opens downward. . Note that the size of the cavity 10 a is larger than that of the lower support member 11.
[0026]
With such a configuration, when the lower support member 11 is raised by pulling up the bolt 12, the heat insulating lid 8 is pushed by the lower support member 11 and enters the cavity 10a as shown in FIG. It can be bent. As a result, the heat insulating lid 8 does not interfere with the inner peripheral wall of the upper side lump 2, so that the heat insulating device 1 can be easily detached.
[0027]
In the embodiment of FIG. 4, the upper support member is provided with a cavity, but the lower support member may be provided with a cavity. In this case, if the size of the hollow portion is made larger than that of the upper support member, the heat insulating lid is pushed by the upper support member when the lower support member is raised, and is bent into the hollow portion. In the embodiment of FIG. 4, the lower support member can be moved up and down, but the upper support member may be moved up and down. Also in this case, if a hollow portion is provided in the upper support member or the lower support member in the same manner as described above, when the upper support member is lowered, the heat insulating lid enters the hollow portion and is bent.
[0028]
In the above embodiment, the mounting frame is provided with a protrusion on the mounting seat and a notch is provided on the fall-preventing lid engaging member that is locked thereto. However, the present invention is not limited to this, and conversely the receiving frame A notch may be provided in the mounting seat and a protrusion may be formed on the engaging tool. Further, the shape of the engagement tool is not limited to a plate shape, but may be a rod shape, for example, and may be locked to a mounting seat of the receiving frame.
[0029]
【The invention's effect】
1) The heat insulating device for a lid for an underground structure according to the present invention includes a fall prevention lid and a heat insulating lid, so that heat insulation between the inside of the underground structure and the underground structure lid is possible, and the underground structure Can prevent falling into.
[0030]
2) Since the heat insulation lid is connected to the fall prevention lid so as to be horizontally rotatable, after the heat insulation lid is attached to the opening of the underground structure, the fall prevention lid can be horizontally rotated and aligned. It can be easily locked to the mounting seat of the receiving frame.
[0031]
3) Since the heat insulating lid is sandwiched and connected by the upper support member and the lower support member, the heat insulating cover is prevented from wobbling and the heat insulating device can be easily attached and detached.
[0032]
4) The heat insulating lid is formed of a flexible material, and the lower support member is connected to the fall prevention lid so as to be movable up and down, and the upper support member or the lower support member is insulated when the lower support member is raised. Since the hollow portion into which the lid enters is formed, the heat insulating lid can be bent when the lower support member is raised, and the heat insulating device can be attached and detached more easily. The same effect can be obtained when the upper support member is connected to the fall prevention lid so as to be movable up and down.
[Brief description of the drawings]
FIG. 1 shows a state in which a heat insulating device for an underground structure lid according to the present invention is attached to a receiving frame, FIG. 1- (a) is its plan view, and FIG. 1- (b) is A in FIG. It is -A sectional drawing.
FIG. 2 is a plan view of a receiving frame.
FIG. 3 shows one embodiment of a heat insulating device for a lid for an underground structure according to the present invention, FIG. 3- (a) is its plan view, and FIG. 3- (b) is BB in FIG. It is sectional drawing.
FIG. 4 is a cross-sectional view showing another embodiment of the underground structure lid heat insulating device of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Heat insulation apparatus 2 of a cover for underground structures Upper side lump 3 Receiving frame 4 Mounting seat 4a Bow-shaped shelf part 4b Protrusion 5 Fall prevention lid 5a Lid 5b Handle 6 Engagement tool 6a Notch 7 Reinforcement rib 8 Thermal insulation lid 9 Through-hole 10 Upper support member 10a Cavity 11 Lower support member 12 Bolt 13 Nut

Claims (5)

In a heat insulating device for an underground structure lid comprising a fall prevention lid that is detachably locked to a mounting seat of a receiving frame, and a thermal insulation lid that is connected to the lower side of the fall prevention lid, the thermal insulation lid serves as a fall prevention lid. A heat insulating device for a lid for an underground structure, which is connected to be horizontally rotatable . 2. The heat insulating device for a lid for an underground structure according to claim 1 , wherein a heat insulating cover is sandwiched and connected below the fall prevention cover by an upper support member and a lower support member . In a heat insulating device for a lid for an underground structure comprising a fall prevention lid that is detachably locked to a mounting seat of a receiving frame and a thermal insulation lid that is coupled to the lower side of the fall prevention lid, a thermal insulation lid is provided below the fall prevention lid. A heat insulating device for a lid for an underground structure , wherein the upper support member and the lower support member are sandwiched and connected . The heat insulating cover is formed of a flexible material, and the lower support member is connected to the fall prevention cover so as to be movable up and down, and the upper support member or the lower support member has the heat insulating cover when the lower support member is raised. The heat insulating device for a lid for an underground structure according to claim 2 or 3, wherein a hollow portion is formed. The heat insulation lid is formed of a flexible material, and the upper support member is connected to the fall prevention lid so as to be movable up and down, and the upper support member or the lower support member has the heat insulation lid when the upper support member is lowered. The heat insulating device for a lid for an underground structure according to claim 2 or 3, wherein a hollow portion is formed.

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