JP2006006024A - Trough lid, connecting member therefor, trough using the same, laying method thereof trough lid and the connecting member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a trough lid less in risk for damaging a cable accommodated in a trough and easy in the connection of the lids, the connecting member of the trough lid for connecting the trough lids, a trough that uses the trough lids and the connecting member for the trough lid, and a laying method for the trough lid to the trough. <P>SOLUTION: The trough lid 10 comprises an overhanging part 11 at the upper part of one end, and a overhanging receiver 12 that is positioned at the lower part of the overhanging part 11 of the lid 10 that is adjacent to the lower part of the other end. The connecting member 30 that connects the lids 10 comprises an overhanging insertion 31 having an almost U-shaped cross section to the upper part of which the overhanging part 11 of the lid 10 is inserted, and an overhanging receiving insertion 32 is inserted with an almost reversed U-shaped cross section to the lower part of which the overhanging receiver 12 formed at the other end of the lid 10 adjacent to the lid 10. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to the laying of a cable trough provided, for example, on the side of a railway track or in a substation facility, and in particular, a trough lid, a connecting member for the trough lid, the trough lid, and the trough lid. The present invention relates to a trough using a connecting member and a method for laying a trough lid on the trough.

Conventionally, a cable trough for protecting and laying a power cable, a communication cable, and the like has been provided, for example, on the side of a railway line or in a substation facility.
This cable trough is usually composed of a concrete trough body having a substantially U-shaped cross section and an upper opening of the trough body covering the entire length of the trough body, which is also a concrete trough lid, After the above-described cables are housed inside the trough body, the opening at the top of the trough body is covered with the trough lid over the entire length.

  By the way, in recent years, there has been a great demand for easy installation of cable troughs, so attempts to make cable trough lids synthetic resin, and not only trough lids but all trough bodies and trough lids made of synthetic resin. Attempts have been made. In particular, from the viewpoint of reusing synthetic resin, attempts have been made to cover all the trough body and trough lid described above with recycled synthetic resin.

  Thus, if at least the trough lid is replaced with a synthetic resin one, the burden on the operator is greatly improved during the construction work. That is, as the trough lid becomes lighter, the transportation of the trough lid and the operation of covering the trough main body with the trough lid are facilitated, which is effective for countermeasures for the back pain of the operator. In addition, transportation and construction are possible without using heavy machinery, and the construction period can be shortened, leading to a reduction in construction costs. If recycled materials are used, they can be re-molded and reused after use. Of course, if a synthetic resin including not only the trough lid but also the trough body is used, the effect is extremely large.

However, when the trough lid is made of synthetic resin, there are the following problems.
That is, when the trough lid is made of synthetic resin, it is naturally lighter than the case of conventional concrete.
Specifically, when compared with trough lids of approximately the same size, a synthetic resin trough lid is about 1/10 that of a concrete lid. As a result, there is a problem that when the train travels near the cable trough, the trough lid jumps up from the trough body due to the wind pressure. Of course, the same can happen when a typhoon or other wind is strong.

  If the trough lid flies off due to wind or the wind pressure of the train, the trough lid may hit the passing train, or it may hit a pedestrian walking along the track. In addition, the cables housed in the trough body may be directly exposed to wind and rain, or in the worst case, the cables may rise and jump out of the trough body.

In view of this, there has been proposed a method of connecting adjacent trough lids with a connecting metal fitting so that the cable trough lids are not easily removed by the wind pressure or wind of a train (Patent Document 1).
As shown in FIG. 10, the method disclosed in Patent Document 1 has a through-hole penetrating the front and back of the trough lid 3 in the vicinity of the connection end surface portion with the coupling end surface of the adjacent trough lid 3 interposed therebetween. 8a and 8b are respectively drilled, and the leg portions 7 and 7 of the connecting member 6 of the substantially U-shaped trough lid are inserted into the through holes 8a and 8b to connect the trough lids 3 to each other.

  Further, the leg portions 7, 7 of the connecting member 6 are devised in the through holes 8a, 8b so as to be inserted obliquely toward the inner wall side of the trough, and the through holes 8a of the trough lids 3, 3 are provided. , 8b, the leg portion 7 of the connecting member 6 acts so that the tip portion pushes the inner wall of the trough outward. As a result, the trough lid 3 is more difficult to come off.

Utility Model Registration No. 3045816

  However, in the case of the connecting member 6 described in Patent Document 1, there is a risk of scratching, for example, cables in the trough at the tips of the legs 7 and 7 of the connecting member 6. In particular, if the length of the legs 7 is increased so as to make it difficult for the connecting member 6 to come off, the risk increases. However, if the length of the leg portions 7 and 7 is shortened, the connecting member 6 is easily removed from the through holes 8a and 8b, and the train passes through the trough at a high speed. There is also a danger that the trough lid 3 is easily detached by the wind pressure.

  Moreover, in an actual trough, there is a high possibility that the number and size of cables stored in the trough will vary, and the cables may or may not be stored in a properly aligned state. In fact, even if the length of the leg portion 7 is made constant, there is no guarantee that the cables will not always be damaged.

  Accordingly, an object of the present invention is to provide a trough lid, a trough lid connecting member for connecting the trough lid, the trough lid connecting member, the trough lid, An object of the present invention is to provide a trough using a connecting member for a trough lid and a method for laying the trough lid on the trough.

  To achieve the above object, the trough lid according to claim 1 is a plurality of trough lids made of synthetic resin that covers the opening of the trough main body having an opening at an upper portion thereof in the longitudinal direction of the trough main body. In the trough lid in which the adjacent trough lids are connected to each other by a connecting member of the trough lid, the trough lid has a protruding portion at one upper end and is adjacent to the lower end at the other end. An extension receiving portion positioned below the extension portion, and the trough lid connecting member has a substantially U-shaped cross section into which the extension portion of the trough lid is inserted. And has a substantially inverted U-shaped cross section into which the overhang receiving portion provided at the other end of the trough lid adjacent to the trough lid is inserted. The trough lid has a receiving portion insertion portion, and the trough lid has a protruding portion. An extension receiving portion of the trough lid that is inserted into the extension portion insertion portion having a substantially U-shaped cross section of the connecting member is an inverted U-shaped extension receiving portion of the connecting member of the trough lid. The trough lids inserted into the part insertion part and adjacent to each other are connected to each other.

  According to the trough lid of the first aspect thus constructed, the connecting member for connecting these trough lids does not have projections such as legs extending toward the inside of the trough. Therefore, there is very little risk of damaging the cables housed inside the trough. In addition, with this trough lid, the overhang provided on the upper part thereof is inserted into the overhang insertion part having a substantially U-shaped cross section of the connecting member, and the extension provided on the lower part of the trough lid. Since the adjacent trough lids can be connected to each other simply by inserting the receiving part into the protruding receiving part insertion part having a substantially inverted U-shaped cross section, the connecting operation is extremely simple.

  The connecting member for a trough lid according to claim 2 is an adjoining trough lid of a plurality of trough lids made of synthetic resin that covers the opening of the trough main body having an opening on the upper side in the longitudinal direction of the trough main body. In the trough lid coupling member for connecting the trough lids to each other, the trough lid coupling member has a generally U-shaped cross-section projecting into which an overhang portion provided at one upper end of the trough lid is inserted. A part insertion part, and an overhang receiving part insertion part having a substantially inverted U-shaped cross section into which an overhang receiving part provided at the lower end of the other end of the trough lid adjacent to the trough lid is inserted in the lower part It is characterized by having.

  The connecting member of the trough lid according to claim 2 thus configured does not have protrusions such as legs extending toward the inside of the trough. Therefore, there is very little risk of damaging the cables housed inside the trough. Moreover, if this connecting member is used, the overhang provided on the upper portion of the trough lid is inserted into the overhang insertion portion having a substantially U-shaped cross section of the connecting member, and provided on the lower portion of the trough lid. Adjacent lids can be easily connected by simply inserting the overhang receiving portion into an overhang receiving portion insertion portion having a substantially inverted U-shaped cross section.

  Further, the connecting member for the trough lid according to claim 3 is the connecting member according to claim 2, wherein the inlet of the protruding portion insertion portion having a substantially U-shaped cross section of the connecting member for the trough lid is the It is narrower than the thickness of the overhanging portion of the trough lid, and the inlet portion of the overhang receiving portion insertion portion having a substantially inverted U-shaped cross section is narrower than the thickness of the overhang receiving portion of the trough lid. And each is spring-biased in the inner direction.

  According to the connecting member according to claim 3, the inlet of the overhanging portion insertion portion having a substantially U-shaped cross section is narrower than the thickness of the overhanging portion of the trough lid, and the cross section is substantially The entrance of the inverted U-shaped overhang receiving portion insertion portion is narrower than the thickness of the overhang receiving portion of the trough lid, and each is spring-biased inward. Therefore, it is possible to easily and reliably connect adjacent lids.

  According to a fourth aspect of the present invention, there is provided a trough body having an opening in the upper portion, a plurality of synthetic resin lids for covering the opening of the trough body in the longitudinal direction of the trough body, and the adjacent troughs. In the trough in which the lids are connected to each other by the connecting member of the trough lid, the trough lid has an overhanging portion at one upper end and the protruding portion of the trough lid adjacent to the lower end of the other end. The trough lid connecting member is inserted in an overhanging portion having a substantially U-shaped cross section into which the overhanging portion of the trough lid is inserted. An extension receiving portion insertion portion having a substantially inverted U-shaped cross section into which an extension receiving portion provided at the lower end of the other end of the trough lid adjacent to the trough lid is inserted in the lower portion and the lower portion. The trough lid overhanging portion has a substantially cross-sectional cross-section of the trough lid connecting member. Inserted into the overhanging portion insertion portion, and the overhang receiving portion of the adjacent trough lid is inserted into the overhang receiving portion insertion portion having a substantially inverted U-shaped cross section of the connecting member of the trough lid. The trough lids adjacent to each other are connected to each other.

  According to the trough according to claim 4, the trough lids are easily connected to each other, and the connecting member has a protruding shape toward the inside of the trough so as to damage cables stored in the trough. There is almost no risk of damaging the cables inside the trough. Therefore, the laying operation of the trough lid can be performed with peace of mind.

  Furthermore, in the method for laying a trough lid according to claim 5, a plurality of synthetic resin-made trough lids are adjacent to each other in the longitudinal direction of the trough body in the opening portion of the trough body having an opening portion on the upper side. In the laying method of the trough lid that is covered while being connected by the connecting member of the trough lid, an overhang portion provided at one upper end of the trough lid is provided above the connecting member of the trough lid. A tension member which is inserted into a protruding portion insertion portion having a substantially U-shaped cross section and is positioned below the protruding portion of the adjacent trough lid provided at the lower end of the other end of the trough lid adjacent to the trough lid. Insert the receiving part into the extension receiving part insertion part having a substantially inverted U-shaped cross section provided at the lower part of the connecting member of the trough lid, and repeat the above operation to connect the plurality of trough lids to the length of the trough body. To cover the direction sequentially The features.

  According to the laying method of the trough lid according to claim 5 formed in this way, the connecting member that connects the adjacent lids does not have protrusions such as legs extending toward the inside of the trough. Since there is almost no risk of damaging the cables stored in the trough, it is possible to lay the trough lid safely. When this trough lid is used, the overhang provided on the upper part of the trough lid is inserted into the overhang insertion part having a substantially U-shaped cross section of the connecting member, and the extension provided on the lower part of the trough lid is provided. Since the adjacent lids can be connected by simply inserting the receiving part into the protruding receiving part insertion part having a substantially inverted U-shaped cross section of the connecting member, the laying operation can be performed very easily.

  As described above, according to the present invention, there is little risk of damaging the cable housed in the trough, and the lid for the trough, which is easy to connect the lids, the connecting member for the trough lid for connecting the lids, and these troughs It is possible to provide a trough using a connecting lid or a connecting member for a trough lid and a method for laying the trough lid on the trough.

  Hereinafter, the trough lid of the present invention, a connecting member for the trough lid, a trough using the trough lid and the connecting member, and a method for laying the trough lid on the trough will be described in detail with reference to the drawings. explain.

  1 to 3 show an embodiment of the trough lid of the present invention (hereinafter simply referred to as a lid). FIG. 1 shows the lids of the present invention, which are also connected to the trough lid of the present invention ( FIG. 2 is a plan view of the connecting member shown in FIG. 1, and FIG. 3 is connected to the lid shown in FIG. 1 with the connecting member shown in FIG. It is a perspective view which shows the state which covered the cover on the opening part of the trough.

1 to 3, for example, from a synthetic resin lid that covers the opening 21 that opens at the top of the trough body 20 made of concrete, for example, in the longitudinal direction of the trough body, such as a recycled product such as polypropylene, polystyrene, or polyethylene. An embodiment of the present invention will be described by taking two adjacent lids as an example.
The two adjacent lids 10 are connected to each other by two connecting members 30 made of, for example, stainless steel or a material obtained by subjecting a metal to hot dip galvanizing.
Incidentally, as shown in FIG. 1, the lid 10 has an overhanging portion 11 at one upper end and an overhang receiving portion 12 positioned below the overhanging portion 11 of the lid 10 adjacent to the lower end of the other end. have. And the connection member 30 which connects this lid | covers 10 has the overhang | projection part insertion part 31 of the substantially U-shaped cross section in which the overhang | projection part 11 of the lid | cover 10 is inserted in the upper part, as FIG. 2 shows. In addition, an overhang receiving portion insertion portion 32 having a substantially inverted U-shaped cross-section is inserted in the lower portion, into which the overhang receiving portion 12 provided at the other end of the lid 10 adjacent to the lid 10 is inserted. .

  By the way, although the expression of U-shape or reverse U-shape is adopted with respect to the connecting member 30, when viewed from the opposite direction, the U-shape looks like an inverted U-shape. Therefore, for example, in the case where the upper portion has an overhanging portion insertion portion having a substantially U-shaped cross section, the connecting member 30 is viewed from the direction in which the upper shape looks like a U-shape. It just means that.

  When the adjacent lids 10 are connected to each other, the overhanging portion 11 of the lid 10 is inserted into the overhanging portion insertion portion 31 having a substantially U-shaped cross section of the connecting member 30 and the adjacent lid 10 is stretched. The receiving and receiving portions 12 are respectively inserted into the protruding receiving portion insertion portions 32 having a substantially inverted U-shaped cross section of the connecting member 30 so that the adjacent lids 10 are connected to each other. In the example of FIGS. 1 and 2, the distance in the height direction of the overhanging portion insertion portion 31 having a substantially U-shaped cross section of the connecting member 30 is substantially equal to the thickness of the overhanging portion 11 of the lid 10 or less than that. Similarly, whether the interval in the height direction of the overhang receiving portion insertion portion 32 having a substantially inverted U-shaped cross section of the connecting member 30 is substantially the same as the thickness of the overhang receiving portion 12 of the lid 10. The lids 10 and 10 connected to each other by the connecting member 30 are connected to such an extent that they are not so loose.

  FIG. 3 shows a state in which the lids 10 are connected by the connecting member 30 as described above. Here, reference numeral 10 a denotes a guide member, which is a guide when the lid 10 is put on the opening 21 of the trough body 20. Instead of the guide member 10a, the trough body 20 and the lid 10 may be fixed by pressing them with a hook or the like from the side. Therefore, the guide member 10a is not always necessary. Incidentally, this guide member 10a is omitted in FIG. Further, the front lid 10 in FIG. 3 is a lid 10 at the tip of the trough, and the one without the overhang receiving portion 12 is used.

By the way, in the connecting member 30 shown in FIG. 2, a cut-up 33 is provided near the center of the portion constituting the lower plate of the overhang receiving portion insertion portion 32 having a substantially inverted U-shaped cross section. The leading end of the cut-and-raised portion 33 is caused to bite into the lower surface of the lid 10 so that the overhang receiving portion 12 of the lid 10 does not rattle with respect to the connecting member 30.
This cut-and-raised 33 is effective particularly when the accuracy of the lid 10 in the thickness direction is difficult to obtain. Of course, when the accuracy in the thickness direction including the overhang receiving portion 12 of the lid 10 has come out properly, this cut-up 33 is unnecessary.

In FIG. 2, reference numeral 34 is a bent portion formed by bending the tip of the lower plate constituting the extension receiving portion insertion portion 32 of the connecting member 30 having a substantially inverted U-shaped cross section. Is cut into and raised into the lower surface of the lid 10 as in the case of 33, or a rib is provided on the lower surface of the lid 10, and the tip of the bent portion 34 is hooked on the rib to cover the connecting member 30 with the lid. This is to prevent the ten overhang receiving portions 12 from rattling.
Therefore, it is not necessary to provide the bent portion 34 when the accuracy in the thickness direction including the overhang receiving portion 12 of the lid 10 is high.

FIG. 4 shows another countermeasure when the thickness accuracy of the overhanging portion 11 and the overhanging receiving portion 12 of the lid 10 is difficult to obtain. The connecting member 30 has an overhanging substantially U-shaped cross section. The distance between the inlets of the part insertion part 31 and the extension receiving part insertion part 32 having a substantially inverted U-shaped cross section is made narrower by, for example, several mm than the thickness of the extension part 11 and the extension receiving part 12 of the lid 10. The overhanging portion 11 and the overhanging receiving portion 12 of the lid 10 inserted into the overhanging portion insertion portion 31 having a substantially U-shaped cross section and the overhang receiving portion insertion portion 32 having a substantially inverted U-shaped cross section. Is securely clamped.
Incidentally, in the connecting member 30 shown in FIG. 4, the cut-and-raised portion 33 and the bent portion 34 are not necessarily required. However, it is preferable that these are provided, because even if there are large variations in the thickness of the overhanging portion 11 and the overhanging receiving portion 12, they can sufficiently cope with each other.

  Further, in FIGS. 2 and 4, the end of the upper plate of the overhanging portion insertion portion 31 having a substantially U-shaped cross section of the connecting member 30 is slightly curved toward the upper portion to provide a curved portion. When the ten overhanging portions 11 are inserted into the overhanging portion insertion portion 31 having a substantially U-shaped cross section, it is provided to facilitate insertion.

  By the way, when connecting the adjacent lids 10 with the connecting member 30, for example, the overhang receiving portion of one lid 10 is first inserted into the overhang receiving portion insertion portion 32 having a substantially inverted U-shaped cross section of the connecting member 30. 12 is inserted and the bent portion 34 is hooked on a rib or the like provided on the lower surface of the lid 10, or the cut-and-raised 33 is digged into the lower surface of the lid 10. In addition, the lid 10 on which the connecting member 30 has been mounted is slid toward the overhanging portion 11 of the lid 10 that has already been put on the trough main body 20, and the overhanging portion 11 is substantially cut in cross section. It may be inserted into the U-shaped projecting portion insertion portion 31 and this may be repeated sequentially to connect the lids 10 one after another.

FIG. 5 is a longitudinal sectional view showing another embodiment of the present invention.
The characteristic of the embodiment shown in FIG. 5 is that the cover 10 made of synthetic resin expands due to a change in the laying environment, in particular, a temperature change, and the expanded portion loses the escape place so that the cover 10 does not jump out of the trough body 20. It is in the point devised by.
Specifically, the rear surface of the overhanging portion insertion portion 31 having a substantially U-shaped cross section of the connecting member 30 and the extension of the lid 10 inserted into the overhanging portion insertion portion 31 having a substantially U-shaped cross section. Similarly, the cross-section of the connecting member 30 is substantially reverse U-shaped so that a gap 38 having a length of, for example, 0.1% to 5% of the length of the lid 10 is formed between the leading end of the protruding portion 11. The gap 39 from the starting point of the overhanging portion 11 of the lid 10 adjacent to the back surface of the plate constituting the overhang receiving portion insertion portion 32 is also 0.1% to 5% of the length of the lid 10. Thus, the dimensions of the lid 10 and the connecting member 30 are determined.

In order to set the gap 38 and the gap 39 to a predetermined interval, as shown in FIG. 5, a downward projection 36 is formed at the tip of the plate constituting the protruding portion insertion portion 31 having a substantially U-shaped cross section of the connecting member 30. Further, the position restricting projections 13 and 14 are provided on the upper surface of the lid 10. That is, the projection 36 is positioned between the position regulating projections 13 and 14 provided on the lid 10 at room temperature. If the temperature rises and the lid 10 expands, the protrusion 36 gets over the position restricting protrusion 13. As a result, the expansion of the lid 10 is absorbed by the gaps 38 and 39, so that the lids 10 will not expand and lose their escape and will not lift from the trough body 20.
Although the position restricting protrusion 13 is not necessarily required, it is preferable that the position restricting protrusion 13 is provided because the connecting member 30 is not struck at room temperature.
The one shown in FIG. 5 is optimal for troughs laid in places where the temperature change is large. Incidentally, it is not necessary to provide this kind of position restricting projections 13 and 14 for an object installed in an environment with little temperature change.

  FIG. 6 shows still another embodiment of the present invention, which is characterized by the shape of the overhang receiving portion 12 of the lid 10. In the embodiment described above, rainwater or the like may enter the trough body 20 from the gap between the connecting portions of the lid 10, but the embodiment shown in FIG. This is an improvement that prevents it. 6A is a partial plan view of the lid 10, and FIG. 6B is a front view.

The lid 10 shown in FIG. 6 is characterized in that a water intrusion preventing projection 17 is provided at the tip of the overhang receiving portion 12 of the lid 10, and the cross section of the overhang receiving portion 12 is a roof type having a top portion 16. Water that has entered through the gap between the connecting portions does not flow into the trough body 20 from the front end direction of the overhang receiving portion 12, but flows to the outside of the side wall of the trough body 20 through the roof-shaped slope. It is in.
Incidentally, the angle of the roof-shaped portion is, for example, 0.001 degrees or more, preferably about several degrees. If the angle is increased too much, when the overhang receiving portion 12 is inserted into the overhang receiving portion insertion portion 32 having a substantially inverted U-shaped cross section of the connecting member 30, the gap between the both becomes large and the rattling becomes large. Because it will end up. It should be noted that both ends of the overhang receiving portion 12 are designed to be located outside the side wall of the trough body 20 so that water that has flowed down along the roof-shaped slope does not flow into the trough body 20.

7 and 8 show another embodiment of the connecting member 30 of the present invention. The connecting member 30 is characterized in that a partition plate 40 is formed by welding or the like at an intermediate portion between an overhanging portion insertion portion 31 having a substantially U-shaped cross section and an overhang receiving portion insertion portion 32 having a substantially inverted U-shaped cross section. The point is that the partition section 41 is provided.
Incidentally, FIG. 7 shows only one partition plate 40 welded to the intermediate position of the connecting member 30, and FIG. 8 shows an overhang portion insertion portion 31 having a substantially U-shaped cross section and a partition section. 41 is formed by surface welding a member in which only the overhang receiving portion insertion portion 32 having a substantially inverted U-shaped cross section is formed.
These connecting members 30 are used when the total thickness of the overhang portion 11 and the overhang receiving portion 12 is relatively small with respect to the entire thickness of the lid 10, and thus the intermediate portion of the connecting member 30. By providing the partition plate 40, the overhanging portion 11 is provided in the overhanging portion insertion portion 31 having a substantially U-shaped cross section, and the overhang receiving portion 12 is provided in the overhang receiving portion insertion portion 32 having a substantially reverse U-shaped cross section. Can be inserted and held without rattling.

By the way, when the opening part 21 of the trough body 20 is closed with the lid 10 using the connecting member 30 of the present invention, how to open the lid 10 when several lids 10 must be opened at a certain position. Is a problem. In such a case, for example, about five lids 10 are set in advance, and for connecting adjacent groups, as shown in FIG. There is a method of connecting the adjacent lids 10 from the side surface direction using.
In this way, if a problem occurs in the cable in the trough body 20, the nearby connector 50 where the problem has occurred is removed, and one or two sets of lids 10, that is, five to ten lids 10 are provided. Should be removed sequentially.

By the way, as a material of the lid | cover 10, a polyethylene resin, a polypropylene resin, a polystyrene resin, or these recycled products can be utilized, for example. The connecting member 30 is preferably made of stainless steel, plastic, or plated metal in view of the fact that it is exposed to wind and rain. In particular, considering that the overhanging portion 11 and the overhanging receiving portion 12 of the lid 10 must be gripped over a long period of time, it is preferably made of stainless steel.
Further, when the adjacent lids 10 are connected by the connecting member 30, as shown in FIG. 3, it is generally connected at both sides in the width direction of the lid 10, that is, at two locations. If it is narrow, it may be one place. Conversely, when connecting the wide lids 10 to each other, two or more places may be used, or a wide connecting member 30 may be used. The number and dimensions of the connecting members 30 may be determined in consideration of the width of the lid 10 and the installed environmental conditions.

  As described above, according to the present invention, there is little risk of damaging the cable housed in the trough, and the lid for the trough that is easy to connect between the lids, the connecting member for the trough lid for connecting the lid, these It is possible to provide a trough using a trough lid or a trough lid connecting member and a method for laying the trough lid on the trough.

It is a longitudinal cross-sectional view which shows the connection state of the lid | cover for trough of one Example of this invention, and a connection member. It is a top view which shows an example of the connection member of this invention. FIG. 3 is a perspective view showing a state in which the trough lid shown in FIG. 1 is connected by a trough lid connecting member shown in FIG. 2 and the trough lid is placed on the trough opening. It is a top view which shows another Example of the connection member of this invention. It is a longitudinal cross-sectional view which shows the connection state of the lid | cover for trough of another Example of this invention, and a connection member. The further another Example of the lid | cover for troughs of this invention is shown, (a) is a partial top view, (b) is a front view. It is a thing of another Example of the connection member of this invention, and is a longitudinal cross-sectional view which shows the state which connected the lid | cover for trough with this connection member. It is a longitudinal cross-sectional view which shows another Example of the connection member of this invention. It is a partial top view which shows the example of application of the trough of this invention. It is a partial longitudinal cross-sectional view which shows the state which connected the lid | cover for trough with the conventional connection member.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Trough lid 11 Overhang part 12 Overhang receiving part 13 Position control protrusion 16 Top part 17 Water intrusion prevention protrusion 20 Trough main body 30 Connecting member 31 Overhang part insertion part 32 with a substantially U-shaped cross section -Like overhang receiving portion insertion portion 33 cut and raised 34 bent portion 38, 39 gap 40 partition plate

Claims (5)

  A plurality of synthetic resin-made trough lids covering the opening of the trough body having an opening in the upper part in the longitudinal direction of the trough body, and the adjacent trough lids are mutually connected by a connecting member of the trough lid In the connected trough lid, the trough lid has an overhang portion at one upper end, and an overhang receiving portion positioned below the overhang portion of the trough lid adjacent to the lower end of the other end. The trough lid connecting member has a substantially U-shaped overhang insertion portion into which the overhang of the trough lid is inserted, and the trough lid in the lower portion. The trough lid has an overhang receiving portion insertion portion having a substantially inverted U-shaped cross section into which the overhang receiving portion provided at the other end of the trough lid adjacent to the lid is inserted. The overhanging portion is inserted into the overhanging portion insertion portion having a substantially U-shaped cross section of the connecting member of the trough lid. Adjacent trough lids are connected to each other by inserting the extension receiving portions of adjacent trough lids into the extension receiving portion insertion portion having a substantially inverted U-shaped cross section of the connecting member of the trough lid. A trough lid characterized by being made.   In the connecting member of the trough lid that connects the adjacent trough lids of the plurality of synthetic resin-made trough lids covering the opening of the trough main body having an opening in the upper part in the longitudinal direction of the trough body, The trough lid connecting member includes an overhang insertion portion having a substantially U-shaped cross section into which an overhang portion provided at one upper end of the trough lid is inserted, and a trough lid adjacent to the trough lid. A trough lid having an overhang receiving portion insertion portion having a substantially inverted U-shaped cross section into which an overhang receiving portion provided at the lower end of the other end of the trough lid is inserted. Connecting member.   An inlet of the protruding portion insertion portion having a substantially U-shaped cross section of the connecting member of the trough lid is narrower than a thickness of the protruding portion of the trough lid, The inlet portion of the overhang receiving portion insertion portion is narrower than the thickness of the overhang receiving portion of the trough lid, and each is spring-biased in an inward direction. The connection member of the lid for troughs of description.   A trough body having an opening in the upper portion, a plurality of trough lids made of synthetic resin covering the opening of the trough body in the longitudinal direction of the trough body, and the adjacent trough lids are mutually connected to the trough lid. In the trough connected by the connecting member, the trough lid has an overhang portion at one upper end and is positioned below the overhang portion of the trough lid adjacent to the lower end of the other end. The trough lid connecting member has an overhanging portion insertion portion with a substantially U-shaped cross section into which the overhanging portion of the trough lid is inserted, and the trough lid under the lower portion. An extension receiving part insertion portion having a substantially inverted U-shaped cross section into which an extension receiving part provided at the lower end of the other end of the adjacent trough cover is inserted. The protruding portion is inserted into the protruding portion insertion portion having a substantially U-shaped cross section of the connecting member of the trough lid. Adjacent trough lids are inserted into a trough receiving portion insertion portion having a substantially inverted U-shaped cross section of the connecting member of the trough lid, and the adjacent trough lids are connected to each other. A trough characterized by   For troughs that cover a plurality of synthetic resin-made trough covers across the longitudinal direction of the trough body while connecting the adjacent trough lids to each other with a connecting member of the trough lid. In the lid laying method, the overhang portion provided at one upper end of the trough lid is connected to the overhang insertion portion having a substantially U-shaped cross section provided at the upper portion of the connecting member of the trough lid. An overhang receiving portion provided at the lower end of the other end of the trough lid adjacent to the trough lid and positioned below the overhang portion of the adjacent trough lid is provided below the connecting member of the trough lid. A trough lid characterized in that the trough lid is sequentially inserted in the longitudinal direction of the trough body while being inserted into the provided overhang receiving portion insertion portion having a substantially inverted U-shaped cross section and repeating this. Laying method.

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