JP2023113769A - Hanging member and method for opening lid member by hanging member - Google Patents

Abstract

To provide a hanging member for opening a lid member fitted inside a side groove.SOLUTION: There is provided a hanging member for opening a lid member with one or more hanging holes, which is fitted inside the receiving frame of a gutter body provided with a receiving frame at the upper opening, in which the hanging holes are arranged at a position biased to one end from the width direction line or the longitudinal line passing through the center of gravity. The hanging member comprises a frame body, a connecting member attached to the bottom side of the frame body, and a hanging fixture attached to the top side of the frame body. The frame body has an insertion hole for inserting the connecting member. The connecting member is inserted into the insertion hole and the hanging hole, and connects the lower surface of the frame body and the lid member in an overlapping state. The hanging fixture is arranged so that the hanging of one of the hanging members connected to the lid member raises the lid member after the connection while maintaining the horizontal state.SELECTED DRAWING: Figure 3

Description

TECHNICAL FIELD The present invention relates to a side ditch, a lid member used for the side ditch, and a method for opening the lid member.

Cover members used for electric wire joints buried in roads need to be provided with some kind of security in order to prevent mischief and accidents.
As a method to secure the cover member of the side ditch, there is a method of making the cover member heavy so that it cannot be easily lifted, a method of making it a structure without a handle part, a method of providing a lock such as a cylinder shape on the cover member ( For example, see Patent Document 1).

JP 2012-162881 A

As in Patent Document 1, the method of providing a lock on the lid member has the disadvantage that the cost of the lid member is high, so that the construction cost of the utility tunnel facility rises. In addition, since management of a large number of locks becomes complicated, there is also a drawback that it takes time and effort to open the lid member.
SUMMARY OF THE INVENTION In view of such conventional problems, it is a first object of the present invention to provide a gutter that can ensure security without providing a lock on the lid member. A second object of the present invention is to provide a method for easily opening the lid member.

(1) One aspect of the present invention is a side ditch including a side ditch main body provided with a receiving frame at an upper opening, and a lid member that can be fitted into the receiving frame, wherein the lid member includes one or more and the suspension hole is arranged at a position where a moment for rotating the lid member is generated when the lid member is lifted by itself using the suspension hole as a point of action, and the thickness of the lid member is The height dimension is characterized in that the end surface of the lid member that is about to be tilted by the moment interferes with the end surface of the gutter main body or another adjacent lid member.

According to the gutter of the present invention, the suspension hole of the lid member is arranged at the position where the above-mentioned moment is generated, and the thickness dimension of the lid member is the dimension that causes the above-mentioned interference. , the lid member cannot be lifted by itself using the hanging hole as a point of action.
Therefore, even if the lid member is not provided with a lock, the lid member can be prevented from being opened by a third party, and security can be ensured. Therefore, the first object is achieved.

(2) In the side ditch of the present invention, it is preferable that the side ditch main body is provided with a metal interval adjusting member that interferes with the end surface of the lid member when the lid member is inclined.
In this way, the inclined lid member easily interferes with the gutter main body, and it is possible to more reliably prevent the lid member from being opened by a third party.

(3) The gutter of the present invention further includes a second cover member that can be fitted inside the receiving frame, and the second cover member penetrates in the thickness direction formed at a position corresponding to the receiving frame. and a nut member in which the threaded hole coaxially communicates with the through hole.
The second cover member can be opened by screwing a bolt member inserted through the through hole into the nut member without using a special hanging member. Therefore, even in a site where it is difficult to open the lid member (first lid member) using a hanging member, which will be described later, the second lid member is first opened, and then the opened gap is used to open the second lid member. 1 lid member can be opened.

(4) Another aspect of the present invention is a method for opening the above-described gutter cover member, comprising the steps of: connecting a hanging member to the upper surface of the cover member using the hanging hole; and a step of lifting up a hanging portion provided at a position coinciding with the position of the center of gravity of the hanging member.

According to the opening method of the present invention, the hanging member is connected to the upper surface of the lid member using the hanging hole, and the hanging portion provided at a position coinciding with the center of gravity of the lid member and the hanging member after connection is lifted upward. Since it is lifted, the lid member and the hanging member rise while maintaining a horizontal state.
Therefore, the lid member can be opened without interfering with other members, and the lid member can be easily opened. Therefore, the second objective is achieved.

(5) Another aspect of the present invention is a method for opening the above-described gutter cover member, comprising the steps of: connecting a hanging member to the top surface of the cover member using the hanging hole; and jacking up the pair of overhangs.

According to the opening method of the present invention, the suspension member is connected to the upper surface of the lid member using the suspension hole, and the pair of projecting portions provided on the suspension member is jacked up, so that the lid member and the suspension member are in a horizontal state. maintain and rise.
Therefore, the lid member can be opened without interfering with other members, and the lid member can be easily opened. Therefore, the second objective is achieved.

(6) Another aspect of the present invention relates to a lid member for use in the above-described gutter. Therefore, the lid member of the present invention has the same effects as those of the side grooves described above.

ADVANTAGE OF THE INVENTION According to this invention, even if it does not provide a lock to a cover member, the side ditch which can ensure security can be provided. Moreover, according to the present invention, the lid member can be easily opened.

It is a perspective view which shows an example of the utility ditch installation using a side ditch. FIG. 4 is a side view showing the positional relationship between a plurality of lid members and spacing adjusting members; It is explanatory drawing which shows an example of the opening method of a cover member. It is explanatory drawing which shows the modification of a connection member. It is explanatory drawing which shows the modification of a suspension member. It is explanatory drawing which shows the modification of a side ditch. FIG. 10 is a perspective view showing an example of a shared trench facility having a second lid member; It is explanatory drawing which shows an example of the opening method of a 2nd cover member.

An embodiment of the present invention will be described below based on the drawings.
[Overall configuration of utility tunnel equipment]
FIG. 1 is a perspective view showing an example of a utility tunnel facility using a side ditch 1. As shown in FIG.
As shown in FIG. 1 , the utility tunnel facility of this embodiment includes a plurality of side gutters 1 continuously connected in the longitudinal direction X, and a cable 2 housed inside the side gutters 1 .

The plurality of side gutters 1 are buried at predetermined positions in the width direction of the road (for example, end portions in the width direction or central portion in the width direction) such that the longitudinal direction X of the side gutters 1 is along the longitudinal direction of the road. In this case, the width direction Y of the gutter 1 coincides with the transverse direction of the road.
The plurality of gutters 1 may be buried in the road so that the longitudinal direction X of the gutters 1 is along the transverse direction of the road. In this case, the width direction Y of the gutter 1 coincides with the longitudinal direction of the road.

A plurality of types of cables 2 are accommodated inside the gutter 1. - 特許庁The multiple types of cables 2 include various types of cables that serve as residential lifelines (for example, low-voltage or high-voltage power lines, telephone lines, and communication lines such as optical fibers).
In the utility tunnel facility of FIG. 1, the cable 2 is inserted through the protective tube 3 stored in the side gutter 1, but the cable 2 may be stored directly in the side gutter 1 without the protective tube 3. In addition, when the storage space of the gutter 1 has room, water supply and sewage pipes, gas pipes, etc. may be stored.

[Structure of gutters]
As shown in FIG. 1 , the gutter 1 of this embodiment includes a gutter main body 10 and a lid member 20 that closes an upper opening of the gutter main body 10 .
The side ditch main body 10 has a U-shaped ditch 11 made of concrete and a receiving frame 12 made of L-shaped steel fixed to the upper end surfaces of the left and right side walls of the U-shaped ditch 11 . The U-shaped groove 11 may be either precast concrete or cast-in-place concrete. The receiving frame 12 is not necessarily made of L-shaped steel, and may be a recess formed in the upper portion of the side wall of the U-shaped groove 11 .

A substantially square recess 13 is formed on the outer surface of the side wall of the U-shaped groove 11 . The recessed portion 13 is arranged in the longitudinal central portion of the side wall and is a portion thinner than other portions of the side wall.
Therefore, by striking the depression 13 with a tool such as a hammer, a passage window for the cable 2 can be formed in the side wall of the U-shaped groove 11 .

A gap adjusting member 14 is provided at the upper opening of the gutter main body 10 . The gap adjusting member 14 is made of a metal member such as C-shaped steel. The cross-sectional height of the spacing adjusting member 14 is approximately half the cross-sectional height of the receiving frame 12 .
The interval adjusting member 14 is bridged between the left and right receiving frames 12 by fixing both ends thereof to the left and right receiving frames 12 . Further, the spacing adjustment members 14 are arranged in a state of being aligned at predetermined intervals in the longitudinal direction X of the side groove main body 10 . A predetermined interval between the interval adjusting members 14 and 14 is appropriately adjusted according to the longitudinal dimension of the lid member 20 .

The lid member 20 is rectangular and made of precast concrete. The short side dimension of the lid member 20 is substantially equal to the facing distance between the left and right receiving frames 12,12. Therefore, the lid member 20 of the present embodiment is an inner-fitting lid member that fits inside the receiving frame 12 . The weight of the lid member 20 of the present embodiment is a weight that can be lifted manually or by a lifting machine, and is, for example, 35 to 150 kg.
At one end in the longitudinal direction of the lid member 20, there is formed a fitting recess 21 having a cross-sectional shape into which the spacing adjustment member 14 is just fitted.

FIG. 2 is a side view showing the positional relationship between a plurality of lid members 20 and spacing adjusting members 14. As shown in FIG.
As shown in FIG. 2, where L1 is the longitudinal dimension of the lid member 20, W1 is the cross-sectional width of the fitting recess 21, and D1 is the longitudinal distance between adjacent spacing adjusting members 14, D1 is (L1-W1). The arrangement interval of the interval adjusting members 14 is set so as to have a slightly larger dimension (for example, a dimension larger by 3 mm). Further, the thickness dimension T of the lid member 20 is set to a dimension (for example, 60 to 120 mm) that causes interference between circles A and B, which will be described later.

Returning to FIG. 1, the lid member 20 has a pair of suspension holes 22 formed of through holes, for example. The pair of hanging holes 22 is arranged at a position biased toward one end side of a width direction line 23 passing through the center of gravity m of the lid member 20 . The number of suspension holes 22 may be one or three or more.
Therefore, as shown by the phantom lines in FIG. 2, when the lid member 20 is lifted by itself using the suspension hole 22 as a point of action, a moment (moment of force) that causes the lid member 20 to rotate is generated, The member 20 tends to tilt with respect to the horizontal in the longitudinal direction X.

When the lid member 20 tends to tilt due to the above moment, one longitudinal end face of the lid member 20 interferes with the spacing adjustment member 14 in the fitting recess 21 (see circle A in FIG. 2), causing the longitudinal direction of the lid member 20 to The other end face of the direction interferes with the one end face of another adjacent lid member 20 (see circle B in FIG. 2).
Therefore, a third party other than the administrator of the utility tunnel facility cannot lift the cover member 20 by itself using the hanging hole 22 as a point of action. Therefore, according to the gutter 1 of the present embodiment, it is possible to prevent the lid member 20 from being opened by a third party without providing the lid member 20 with a lock.

In order to prevent chipping or cracking of the lid member 20 due to the above interference, it is preferable to take some reinforcement measures on the longitudinal end surfaces of the lid member 20 .
Examples of measures to reinforce the longitudinal end surfaces of the lid member 20 include a method of covering the longitudinal end surfaces of the lid member 20 with a steel plate, a method of coating the longitudinal end surfaces of the lid member 20 with resin, and a method of coating the longitudinal end surfaces of the lid member 20. A method of attaching a woven fabric made of high-strength fibers to the longitudinal end faces of the core can be employed.

[How to open the lid member]
3A and 3B are explanatory diagrams showing an example of a method of opening the lid member 20. FIG.
As shown in FIG. 3, a dedicated suspension member 30 is used to open the lid member 20 of the present embodiment. The hanging member 30 includes a frame body 31 made of a plurality of C-shaped steels, a connecting member 32 attached to the bottom side of the frame body 31, and a hanging hook 33 attached to the top side of the frame body 31. have. The connecting members 32 are provided in the same number as the suspension holes 22 at positions corresponding to the suspension holes 22 .

The connecting member 32 is made of a rod-shaped member protruding downward from the lower surface of the frame body 31 . The rod-shaped member is longer than the thickness dimension T of the lid member 20 and has a hook 34 at its tip.
The latching claw 34 is formed of a right-angled triangular plate side that tapers toward the tip, and can be retracted in the radial direction of the bar-shaped material by means of a roll pin. Further, the latch claw 34 is biased radially outward by a spring material embedded inside the rod-shaped material.

Therefore, when the connecting member 32 is inserted into the hanging hole 22 of the lid member 20 and the frame main body 31 is placed on the lid member 20 , the hooking claw 34 is pulled out when the tip of the connecting member 32 passes through the hanging hole 22 . protrudes and hooks the rear surface of the lid member 20 . As a result, the hanging member 30 and the lid member 20 can be connected while being superimposed on each other.

A proximal end portion of the connecting member 32 is a threaded portion, and a tightening nut 29 can be attached to the threaded portion.
When the tightening nut 29 is rotated in the tightening direction, the frame body 31 is brought into close contact with the upper surface of the lid member 20 and the two are firmly integrated. .

The hanging hook 33 is made of a metal ring material or hook material for hooking a slinging wire or the like. The hanging hook 33 is arranged at a position coinciding with the center-of-gravity position M of the lid member 20 and the hanging member 30 after being connected.
Therefore, when the hanging member 30 is lifted by connecting the sling wire to the hanging hook 33, the lid member 20 and the hanging member 30 are raised while maintaining a horizontal state. Therefore, the lid member 20 can be opened without causing interference between circles A and B in FIG.

The connection position of the hanging member 30 with respect to the lid member 20 may be a position where the hanging member 30 protrudes from one longitudinal end of the lid member 20 as shown in FIG. 2, the suspension member 30 may be positioned so as not to protrude from the lid member 20. As shown in FIG.

[Modification of connecting member]
FIG. 4 is an explanatory diagram showing a modification of the connecting member 32. As shown in FIG.
In the example of FIG. 4( a ), an insert member 24 made of metal is embedded in the upper surface side of the lid member 20 . The insert member 24 is arranged at a position biased toward one end side of a width direction line 23 (see FIG. 1) passing through the center of gravity m. Thus, the hanging hole 22 of the lid member 20 may be formed by a threaded hole of the insert member 24 .

When the suspension hole 22 of the lid member 20 is a threaded hole of the insert member 24, the connecting member 32 may employ a bolt member 32A corresponding to the threaded hole. The flange portion of the frame main body 31 is formed with an insertion hole for the bolt member 32A.
In this case, after aligning the insertion hole of the frame body 31 with the insert member 24 of the lid member 20, the hanging member 30 is connected to the lid member 20 by screwing the bolt member 32A into the insert member 24 of the lid member 20. be able to.

In the example of FIG. 4B, the suspension hole 22 of the lid member 20 is a Saturn hole 22A having a Saturn-shaped cross section. Thus, the suspension hole 22 of the lid member 20 may be the Saturn hole 22A instead of the circular cross-sectional through hole.

When the hanging hole 22 of the lid member 20 is the Saturn hole 22A, the connecting member 32 may be a rod-shaped member having a pair of retaining pieces 35 projecting radially outward. A Saturn hole is also formed in the flange portion of the frame main body 31 .
In this case, after aligning the Saturn hole of the frame main body 31 with the Saturn hole 22A of the cover member 20, the connecting member 32 is inserted into the Saturn hole 22A of the cover member 20 and rotated by 90 degrees, so that the hanging member 30 can be lifted. It can be connected to the lid member 20 .

[Modified Example of Suspension Member]
FIG. 5 is an explanatory diagram showing a modification of the hanging member 30. As shown in FIG.
In the example of FIG. 5, the frame main body 31 of the hanging member 30 is provided with a pair of projecting portions 36 , 36 . The pair of projecting portions 36 , 36 are members for jacking up the hanging member 30 together with the lid member 20 after connection, and protrude further outward from the ends of the lid member 20 in the longitudinal direction.

When the pair of projecting portions 36, 36 are jacked up at the same time, the lid member 20 and the hanging member 30 are raised while maintaining a horizontal state. Therefore, the lid member 20 can be opened without causing interference between circles A and B in FIG.
A member for jacking up the pair of overhanging portions 36, 36 is, for example, a pantograph type jack 37 shown in FIG. 5(a) or a tool such as a bar 38 shown in FIG. should be adopted.

In the example shown in FIG. 5(c), a nut member 39 is attached to the pair of projecting portions 36, 36 so that the screw holes face up and down.
In this case, by screwing a relatively long bolt member 39A from above the nut member 39 and continuing screwing even after the tip of the bolt member 39A reaches the other lid member 20, the lid member 20 and the suspension member 30 are attached. Ascend while maintaining a horizontal position.

5, the projecting portions 36, 36 project in the longitudinal direction X of the side ditch 1, but the pair of projecting portions 36, 36 may be members that project in the width direction Y of the side ditch 1. FIG.

[Modified Example of Lid Member]
FIG. 6 is an explanatory diagram showing a modification of the gutter 1. FIG. Specifically, FIG. 6(a) is a plan view of the lid member 20, and FIG. 6(b) is a front view of the gutter 1. As shown in FIG.
As shown in FIG. 6( a ), the suspension hole 22 of the lid member 20 is arranged at a position deviated to one end side of the longitudinal direction line 25 passing through the center of gravity m of the lid member 20 . The number of suspension holes 22 may be one, two, or four or more.

As shown in FIG. 6(b), the upper opening of the gutter main body 10 is provided with a pair of spacing adjusting members 15, 15. As shown in FIG. The gap adjusting member 15 is made of a metal member such as C-shaped steel. The cross-sectional height of the spacing adjusting member 15 is approximately half the cross-sectional height of the receiving frame 12 .
A pair of spacing adjusting members 15, 15 are fixed to the upper surfaces of the flange portions of the left and right receiving frames 12, respectively. At both ends of the lid member 20 in the width direction, fitting recesses 26 having cross-sectional shapes into which the spacing adjustment members 15 are just fitted are formed.

Assuming that the widthwise dimension of the lid member 20 is L2, the cross-sectional width of the fitting recess 26 is W2, and the widthwise distance between the pair of spacing adjusting members 15, 15 is D2, D2 is slightly larger than (L2-2×W2). The spacing adjustment member 15 is positioned so as to have a large dimension (for example, 3 mm larger dimension). Further, the thickness dimension T of the lid member 20 is set to a dimension (for example, 60 to 120 mm) that causes interference, which will be described later.

As described above, the hanging hole 22 is arranged at a position biased toward one end side (left side in the example of the drawing) with respect to the longitudinal direction line 25 .
Therefore, as shown by the phantom lines in FIG. 6B, when the lid member 20 is lifted by itself using the suspension hole 22 as a point of action, a moment (moment of force) that causes the lid member 20 to rotate is generated. , the lid member 20 tends to incline downward to the right with respect to the horizontal line in the width direction Y.

When the lid member 20 tries to tilt due to the above moment, the widthwise left end surface of the lid member 20 interferes with the spacing adjustment member 15 in the left fitting recess 26, and the widthwise right end surface of the lid member 20 interferes with the right side. interference with the receiving frame 12.
Therefore, a third party other than the administrator of the utility tunnel facility cannot lift the cover member 20 by itself using the hanging hole 22 as a point of action. Therefore, even in the case of the gutter 1 of the modified example, it is possible to prevent the lid member 20 from being opened by a third party without providing the lid member 20 with a lock.

In order to prevent chipping or cracking of the lid member 20 due to the above-mentioned interference, it is preferable to take some reinforcing measures on the widthwise end faces of the lid member 20 .
Examples of measures to reinforce the widthwise end surfaces of the lid member 20 include a method of covering the widthwise end surfaces of the lid member 20 with a steel plate, a method of coating the widthwise end surfaces of the lid member 20 with a resin, and a method of coating the widthwise end surfaces of the lid member 20 . It is possible to adopt a method of attaching a woven fabric made of high-strength fibers to the width direction end face of the.

When it is desired to open the lid member 20 of FIG. 6, a method substantially similar to the opening method using the dedicated hanging member 30 shown in FIGS. 3 to 5 may be used.
Specifically, the suspension member 30 is connected to the lid member 20, and both are suspended via a suspension hook 33 located at a position coinciding with the center of gravity M of both, or the projecting portion 36 of the suspension member 30 is jacked up. Just do it.

[Lid member for facilitating opening]
FIG. 7 is a perspective view showing an example of a shared trench facility having a second lid member 40. As shown in FIG.
The common trench facility shown in FIG. 7 has a second lid member 40 in addition to the first lid member 20 described above. A second lid member 40 is installed in place between the first lid members 20 .

The second lid member 40 is made of a lid member whose longitudinal dimension is smaller than that of the first lid member 20, and has through holes 41 penetrating in the thickness direction at both ends in the width direction. However, the longitudinal dimension of the second lid member 40 is not particularly limited, such as the same dimension as the first lid member 20 .
The through hole 41 of the lid member 40 is arranged at a position corresponding to the receiving frame 12 , and a nut member 42 is embedded in the lower surface side inside the lid member 40 . The threaded hole of the nut member 42 coaxially communicates with the through hole 41 .

FIG. 8 is an explanatory diagram showing an example of a method of opening the second lid member 40. As shown in FIG.
As shown in FIG. 8, to open the lid member 40, a relatively long bolt member 43 is inserted through the left and right through holes 41 and screwed into the nut member 42. As shown in FIG.
By continuing to screw the bolt member 43 even after the tip of the bolt member 43 reaches the receiving frame 12, the lid member 40 rises while maintaining a horizontal state. Therefore, the lid member 40 can be opened without using the hanging member 30. - 特許庁

According to the second lid member 40, since it rises by screwing the bolt member 43, the lid member 40 can be easily opened even if gravel or the like is caught between the second lid member 40 and the receiving frame 12.例文帳に追加
Therefore, even if it is difficult to open the first lid member 20 using the hanging member 30, the second lid member 40 is opened first, and then the first lid member 20 is opened using the opened gap. Advantageously, the member 20 can be opened.

It is preferable to form handhold recesses 44 on both widthwise end surfaces of the second lid member 40 . In this case, the operation of screwing the bolt member 43 is stopped when the handhold recess 44 is exposed, and the cover member 40 can be opened with a tool or the like locked to the handhold recess 44 .
Therefore, the operation of screwing the bolt member 43 can be shortened, and the lid member 40 can be opened more easily. It should be noted that the position where the handhold concave portion 44 is formed may be the longitudinal end surface of the lid member 40 .

As described above, if the first lid member 20 is opened after the second lid member 40 is opened, the first lid member 20 can be opened without using the dedicated hanging member 30. can.
7, the first lid member 20 may have a simple plate structure without the suspension hole 22, and may have a structure that makes it impossible to open the first lid member 20 from the beginning.

[Other Modifications]
The present invention is not limited to the above-described embodiments, and can be modified as appropriate within the scope of the invention described in the claims.
For example, the gutter 1 of the present invention can be used not only for utility drain facilities but also for waterway facilities such as sewers.

1 Gutter 2 Cable 3 Protective Tube 10 Gutter Main Body 11 U-shaped Groove 12 Receiving Frame 13 Recess 14 Spacing Adjusting Material 15 Spacing Adjusting Material 20 Lid Member (First Lid Member)
21 Fitting recess 22 Suspension hole 22A Saturn hole 23 Width direction line 24 Insert member 25 Longitudinal direction line 26 Fitting recess 29 Tightening nut 30 Suspension member 31 Frame main body 32 Connecting member 32A Bolt member 33 Suspension hook 34 Lock claw 35 Omission Stopping piece 36 Overhang 37 Pantograph jack 38 Bar 39 Nut member 40 Lid member (second lid member)
41 through-hole 42 nut member 43 bolt member 44 handhold concave portion

TECHNICAL FIELD The present invention relates to a suspension member and a method for opening a lid member by the suspension member.

Claims (6)

A gutter main body with a receiving frame provided at the upper opening,
and a lid member that can be fitted inside the receiving frame,
The lid member has one or more hanging holes,
The hanging hole is
arranged at a position where a moment for rotating the lid member is generated when the lid member is lifted by itself using the suspension hole as a point of action;
The thickness dimension of the lid member is
A side ditch having dimensions such that an end face of the lid member that tends to incline due to the moment interferes with an end face of the side ditch main body or another adjacent lid member. In the gutter main body,
2. The side ditch according to claim 1, further comprising a metal spacing adjustment member that interferes with the end surface of the lid member when the lid member is inclined. further comprising a second lid member that can be fitted inside the receiving frame;
The second lid member is
a through hole penetrating in a thickness direction formed at a position corresponding to the receiving frame;
3. The side groove according to claim 1, further comprising a nut member in which the threaded hole coaxially communicates with the through hole. A method for opening a gutter lid member according to claim 1 or claim 2, comprising:
connecting a suspension member to the upper surface of the lid member using the suspension hole;
A method for opening a lid member, comprising the step of lifting upward a hanging portion provided at a position coinciding with the center of gravity of the lid member and the suspension member after connection. A method for opening a gutter lid member according to claim 1 or claim 2, comprising:
connecting a suspension member to the upper surface of the lid member using the suspension hole;
and a step of jacking up a pair of projecting portions provided on the suspension member. A cover member used for the side ditch according to claim 1 or claim 2.

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