JP4885263B2 - Trough structure and its laying method - Google Patents

Description

  The present invention generally relates to a trough structure and a laying method using the same, and more specifically to a trough structure made of synthetic resin and a laying method thereof.

  A trough structure such as a cable trough made of synthetic resin composed of a trough body having a U-shaped or U-shaped cross section and a lid that closes the trough body has a good moldability and is lightweight and has an excellent workability for laying. On the other hand, the trough body and the lid are easily slipped in the closed state because they are lightweight and have little mutual friction.

  In the trough structure made of synthetic resin, a part of the lid is dropped with respect to the trough main body and formed into a lid shape (Patent Document 1 described later), and a fitting portion between the trough main body and the lid is provided with a groove portion along the length direction. The thing (after-mentioned patent document 2, 3) etc. which comprised with the part with which this fits is proposed.

The trough structure prevents sliding of the lid with respect to the trough body in the width direction, and the latter prevents the lid from coming off upward from the trough body, but both are easy to slide in the length direction.
Of course, it is difficult to slip when the lid is pressed against the trough body with stoppers on both sides (Patent Document 3 below), but the lid is stopped against the body with the stopper in the trough laying process in a later step. is there. In some cases, the lid is laid without being stopped by a stopper or the like.
In this way, in the laying state in the laying process, the trough body and the lid are not fixed with a stopper or the like, and the worker walks on the lid that just closed the trough body for various work, or contact with the work tool For example, the lid slides in the length direction with respect to the trough body.
Furthermore, since it is transported in the state of being loaded on the vehicle in the normal closed state, it will slide in the length direction with respect to the trough body due to vibration during transportation, so that the load may not collapse or the load may not collapse. There was something that made her look bad.

Japanese Patent Laid-Open No. 06-121440 JP 2000-055240 A JP 2004-147396 A

An object of the present invention is to suppress the sliding of the lid with respect to the trough body, and an object thereof is to provide a trough structure in which the lid does not slide in the length direction as well as the width direction with respect to the trough body in a normal closed state. There is.
Another object of the present invention is to provide a trough structure that suppresses the sliding of the lid with respect to the trough body as described above, and thereby does not hinder a smooth closing operation.
Still another object of the present invention is to provide a method for laying a trough structure that can be easily and safely laid with good workability.

The trough structure according to the present invention is configured as follows in order to solve the above problems.
First, the outer sides of both side walls 10 and 10 are made of a synthetic resin having a number of vertical ribs 11 along the height direction formed at predetermined intervals along the length direction, and are substantially U-shaped or U-shaped in cross section. The trough body 1 and a lid 2 made of synthetic resin that closes the upper end opening of the trough body 1, and the side wall 10 of the trough body 1 and the side portion of the lid 2 that corresponds to the side wall 10 Longitudinal displacement prevention means 3 for preventing the displacement of the lid 2 in the length direction of the trough body 1 and width direction displacement prevention means for preventing the displacement of the lid 2 in the width direction of the trough body 1 possess a 3a, the longitudinal displacement preventing means 3 and the width direction displacement preventing means 3a is provided on both sides near the position of the trough structure, each longitudinal displacement preventing prevention means 3, corresponding respectively At the installation position, to the upper end surface of the side wall 10 of the trough body 1 A restriction protrusion 32 formed and a first restriction protrusion 33 formed on the back side of the lid 2 and pressed against the restriction protrusion 32 when the lid 2 moves in the longitudinal direction of the trough body 1. The restriction projections 32 in each length direction deviation preventing means 3 are formed along the length direction of the corresponding side wall 10, and the first restricted convex portion 33 sandwiches the restriction projections 32 from both ends. When the lid 2 moves to one side in the length direction of the trough body 1, one first regulated convex portion 33 is pressed against one end of the regulating projection 32, and the lid 2 is It is characterized in that the other first restricted convex portion 33 is pressed against the other end of the restricting projection 32 when moving in the other direction .

Secondly, on the back side of the lid body 2 is provided with side reinforcing ribs 20 on both side edges and a number of width direction reinforcing ribs 21 continuous with the side reinforcing ribs 20 along the width direction at predetermined intervals. A part of the width direction reinforcing rib 21 also serves as the first restricted convex portion 33.

Third, each width direction deviation preventing means 3a is formed on the lid 2 at the corresponding installation position, and formed on the upper end surface of the side wall 10 when the lid 2 is displaced in the width direction of the trough body 1. It is characterized by comprising a second restricted convex part 34 pressed against the inner upper part of the regulated protrusion 32.

Fourth, the second restricted convex portion 34 is characterized in that the cross-sectional area gradually decreases from the proximal end side to the distal end direction.

Fifthly, on the back side of the lid body 2, side reinforcing ribs 20 on both side edges, a large number of width reinforcing ribs 21 continuous with the side reinforcing ribs 20 along the width direction at predetermined intervals, and the width A longitudinal reinforcing rib 22 orthogonal to the directional reinforcing rib 21 and close to each side wall 10, wherein the longitudinal reinforcing rib 22 also serves as the second restricted protrusion 34. Yes.

Sixth, the trough body 1 has a female connecting portion 13 having an enlarged inner cross-section at one end and a male connecting portion 14 corresponding to the female connecting portion 13 at the other end. It is a feature.

Seventh, the lid body 2 has a length that covers one end portion from a position excluding the female coupling portion 13 of the trough body 1 to a position where the other end portion covers the male coupling portion 14, A short inner wrap portion 26 having a reduced cross-sectional outer shape is formed at one end portion, and an outer wrap portion 27 corresponding to the inner wrap portion 26 is formed at the other end portion.

Eighth, when laying the trough structure according to claim 6 or 7, wherein the trough body 1 is closed with a lid 2, the next laying is performed on the female connecting portion 13 of the trough structure laid just before. The present invention includes a step of sequentially laying the trough structure while connecting the male connecting portions 14 of the trough structure to be connected.

Ninthly, when laying the trough structure according to any one of claims 1 to 7, wherein the trough body 1 is closed with a lid 2, the rear end of the trough structure laid just before is next. The method includes a step of sequentially laying the trough structure while abutting the front end portion of the trough structure to be laid.

Tenth, the trough structure is laid along the trough bridge 4 having a substantially square-shaped cross section, and flange portions 12 are integrally formed on both sides of the bottom portion of the trough body 1 in the trough structure. The method further includes a step of fixing the portion 12 onto the trough bridge 4.

According to the trough structure according to the present invention, the length direction displacement preventing means 3 by the unevenness for preventing the displacement of the lid 2 in the length direction of the trough body 1, and the lid in the width direction of the trough body 1. 2 in the width direction preventing means 3a by the unevenness | corrugation which prevents the shift | offset | difference of 2 in a normal closed state, a lid | cover does not slip to a trough main body in a width direction or a length direction. Therefore, there are few obstacles and convenience in transportation, storage in the warehouse, and other handling, and further static charge is reduced.
In addition, even when the lid is pressed and fixed to the trough body with a buckle bracket etc. at the required stage of laying, the impact force is not transmitted to the buckle bracket etc. when an external force in the displacement direction is applied to the lid. The life of buckle brackets and other fixing brackets can be kept long.

  According to the laying method of the trough structure according to the present invention, the trough body is laid while sequentially connecting or abutting in the closed state where the trough body is closed with the lid as described above. In addition to being able to perform work, the laying worker can safely walk on the lid even when the lid is not pressed against the trough body with metal fittings or the like.

It is a figure which shows the trough main body of the trough structure of 1st Embodiment, (a) A figure is a top view of a trough main body, (b) A figure is a front view of a trough main body, (c) A figure is a right view of a trough main body. is there. It is a figure which shows the cover of the trough structure of 1st Embodiment, (d) A figure is a top view of a cover, (e) is a front view of a cover, (f) is a bottom face (back surface) figure of a cover. 1 is a cross-sectional view of the trough body with the cover of FIG. 2 covered. FIG. 5 is a half cut enlarged sectional view taken along arrow BB in FIG. 3. It is a fragmentary sectional view which follows the arrow CC of FIG. It is a figure which shows the trough structure of 2nd Embodiment, (g) A figure is a fragmentary top view of the trough main body 1, (h) A figure is a bottom view of a lid | cover. It is a partial expanded sectional view which follows the arrow DD of a figure (g) figure in a closed state. (G) It is a side part expanded sectional view in the arrow EE of a figure in a closed state. It is a fragmentary sectional view for explaining a 3rd embodiment of a trough structure, and one form of a laying method of a trough structure. FIG. 10 is a partial enlarged cross-sectional view taken along arrow FF in FIG. 9. It is a side view of the trough structure of FIG. It is a side view of the trough structure which shows the deformation | transformation form of a slip prevention means.

First, an optimum embodiment of a trough structure according to the present invention will be described with reference to the drawings.
First Embodiment FIGS. 1 to 5 show a trough structure according to a first embodiment of the present invention. FIG. 1 (a) is a plan view of the trough body, and FIG. 1 (b) is a side view of the trough body. 1 (c) is a right side view of the trough body, FIG. 2 (d) is a plan view of the lid, FIG. 2 (e) is a front view of the lid, FIG. 2 (f) is a bottom view of the lid, and FIG. FIG. 4 is a cross-sectional enlarged view taken along arrow BB in FIG. 3 and FIG. 5 is a partial cross-sectional view taken along arrow CC in FIG. 4.

A trough body 1 made of synthetic resin using waste material of a plastic product or the like is configured such that a lid 2 made of the same material is closed in contact with both sides.
The trough body 1 has a large number of parallel vertical ribs 11 extending in the vertical direction to the outside of the side walls 10 at predetermined intervals, and the vertical ribs 11 gradually increase in width as they extend downward, as shown in FIG. The lower end portion is inclined from the portion approaching the direction and is continuous with the flange portion 12 at the bottom portion along the length direction.
As shown in FIG. 1, it is preferable that the vertical ribs 11 gradually increase in width as they extend downward, but they do not necessarily have to gradually increase in width as they extend downward, and are continuous with the bottom flange. It does not have to be. As shown in FIG. 4, the width of the trough body 1 including the flange portion 12 at the bottom is substantially equal to the width of the lid 2 in the closed state.

The trough body 1 is formed with a female connecting portion 13 having an enlarged cross-sectional inner shape at one end (right end in FIG. 1), and the other end is reduced in outer shape so as to fit inside the female connecting portion 13. A male connecting portion 14 is formed.
Retaining protrusions 13a are formed in the longitudinal direction on the inner end portions of the both side walls of the female connecting portion 13, and the locking pieces 14a corresponding to the retaining protrusion 13a on the outer end portions of the both side wall portions of the male connecting portion 14. Are formed along the vertical direction.
A mounting base 15 for attaching a base portion of a buckle fitting (not shown) to the outer side surfaces of the side walls 10 and 10 is located at a portion adjacent to the female connecting portion 13 of the trough body 1 and a position adjacent to the male connecting portion 14. It is formed in a shelf shape. The buckle fitting attached to the attachment base 15 is guided to the buckle guide groove 25 of the lid 2 shown in FIG. 2 in the closed state, and the lid 2 is pressed against the trough body 1 from above and fixed. In order to complete the closed state, a buckle metal fitting is usually used. However, there is a case where the trough body 1 is simply used by closing the lid 2 without using the buckle metal fitting.
Reference numeral 16 denotes a bottom reinforcing rib formed in parallel to the raised bottom-like bottom surface in the width direction. At the center of a part of the bottom reinforcing rib 16, the trough body 1 is connected to the installation base with a bolt nut (not shown). A short tubular bolt guide portion 17 is formed for fixing with the screw.

The lid 2 is in the form of a shallow bowl having side reinforcing ribs 20 on both side edges of the back side. A large number of width direction reinforcing ribs 21 are formed between the side portion reinforcing ribs 20 at a predetermined interval so as to continue at the same height as the side portion reinforcing ribs 20, and are further orthogonal to the width direction reinforcing ribs 21. Parallel lengthwise reinforcing ribs 22, 22 located near both sides are formed. Each of the longitudinal reinforcing ribs 22 and 22 is inserted into the trough body 1 by a predetermined amount from the upper ends of the side walls 10 and 10 in a state of being close to the inner side surfaces of the side walls 10 and 10 of the trough body 1 when the lid is closed. Has a height. The longitudinal reinforcing ribs 22 and 22 are inclined at an angle slightly larger than the vertical side surface (outer surface) facing the side wall 10 of the trough body 1.
The lid 2 is formed with a large number of non-slip irregularities on the upper surface alternately in diagonal lines, and one end (the right end in FIG. 2) covers the top of the female coupling portion 13 of the trough body 1. An outer wrap portion 23 having a slightly enlarged inner shape is formed, and an inner wrap portion 24 having an outer shape reduced so as to correspond to the male connection portion 14 of the trough body 1 is formed at the other end.

As shown in FIG. 3, the trough body 1 is covered with the lid 2, and the outer lap portion 23 is connected to the other end portion of the other trough structure in the closed state on the one end portion of the closed trough structure. When inserted along the length direction, the ends of the two are connected in a state of being wrapped by the connecting portions 13 and 14.
When a force in the pulling direction is applied to both trough structures in the inserted state, the male shape of the other trough body 1 is moved to the retaining piece 13a of the female connecting portion 13 of the one trough body 1 when slightly pulled apart. The locking piece 14a of the connecting portion 14 is hooked and both are prevented from coming off.
Although FIG. 3 shows a case where the lid 2 wraps with the front and rear trough structures in the closed state, as a structure of the lid 2, a structure having no wrap portion can be used by design.

As shown in FIG. 4, between the side wall 10 of the trough body 1 and a position near the side portion of the lid 2 corresponding to the side wall 10, a vertical restriction projection 32 is long on the upper end surface of the side wall 10 of the trough body 1. It is formed along the vertical direction. On the other hand, a first regulated convex portion 33 having a predetermined clearance CL (FIG. 5) with respect to the regulation projection 32 is formed in the lid 2 at a position sandwiching each regulation projection 32 along the width direction. .
Each of the restricting protrusions 32 and the first restricted protrusions 33 constitute a length direction deviation preventing means 3 that restricts the displacement of the lid 2 with respect to the trough body 1 in the length direction in the closed state. .
In this embodiment, a specific thing of the width direction reinforcement rib 21 formed in the back side (inner side) of the lid | cover 2 is utilized partially (both ends) for each 1st to-be-regulated convex part 33, and one part Each of the width direction reinforcing ribs 21 also serves as the regulated convex portion 33.

In this embodiment, the restricting protrusions 32 are formed on the both side walls 10 of the trough body 1, and the first restricted convex portions 33 corresponding thereto are also located closer to the both side portions of the lid 2.
As shown in FIG. 4, the width direction deviation preventing means 3 a for restricting the displacement of the lid 2 in the width direction with respect to the trough body 1 has both side portions on the back side of the lid 2 using both side walls 10 of the trough body 1 as a regulating member. It is constituted by a vertical second restricted convex portion 34 formed at the offset position. In this embodiment, the lengthwise reinforcing rib 22 also serves as the second restricted convex portion 34, and the tip direction portion of the restricted convex portion 34 has a predetermined clearance CL to the upper end portion of the corresponding side wall 10. It is close.

When the trough body 1 is closed by the lid 2 as shown in FIG. 3, the end surface (the portion near the inner edge of the lower surface) of the side reinforcing rib 20 of the lid 2 is shown in FIG. 4 and FIG. A first regulated convex part corresponding to the upper end face of each longitudinal rib 11, a part of the tip of each widthwise reinforcing rib 21 abutting against the upper end face of the side wall 10 of the trough body 1, and each regulating projection 32 corresponding thereto. 33 and 33 are arranged between each other.
In this state, when the lid 2 moves to one side in the length direction (to the right in FIG. 5), the left-side width-direction reinforcing rib 21 that is the first regulated convex portion 33 is located at the left end of the regulating projection 32. By being pushed and pressed, the lid 2 is regulated to stop the displacement.
When the lid 2 moves to the other side in the length direction (leftward in FIG. 5), the right width direction reinforcing rib 21 which is the other first restricted convex portion 33 moves to the left direction, and the right end of the restriction projection 32 In this case, the lid 2 is regulated so as to stop the deviation.
Another set of longitudinal offset means not shown in FIG. 4 works in the same way.

  When the lid 2 moves to one side in the width direction (left side in FIG. 4), the second regulated convex portion 34 hits the corresponding inner surface of the side wall 10 and the regulating projection 32, so that the lid 2 stops the deviation. Regulated by When the lid 2 moves in the reverse direction, the right second regulated convex portion not shown in FIG. 4 hits the corresponding inner side surface and regulating projection of the side wall, and is regulated so as to stop its movement.

  The clearance CL between the side wall 10 of the trough body 1 shown in FIG. 4 and the restriction projection 32 on the upper end surface thereof and the second restricted convex portion 34, and the clearance between the restriction projection 32 and the restricted convex portion 33 in FIG. CL avoids the trouble of alignment (centering) between the restricting projection 32 and the restricted convex portions 33 and 34 when the lid is closed, and avoids the influence of material shrinkage on the trough body 1 and the lid 2. It is formed for this purpose. Although the amount depends on the material of the synthetic resin material, in order to achieve both of the above-mentioned purposes, the both sides in the width direction and the length direction (both sides in the width direction in the figure, both sides in the length direction) in total About 2 to 10% of the dimension of each convex part 31 is preferable, and it is more preferable that it is about 5 to 8%.

According to the trough structure of the first embodiment, it is possible to prevent not only the width direction but also the length direction slip of the lid 2 with respect to the trough body 1 in the closed state. In this case, there are few obstacles and it is convenient, and static charge is also reduced. (Initial specification 0014)
For example, even when the lid 2 is pressed and fixed to the trough body 1 using a buckle bracket or the like in the laying state, the impact of the lid displacement does not reach the buckle bracket, so the wear of the buckle bracket is prevented and its life is extended. To help.

Between the regulation protrusion 32 which is the length direction deviation preventing means 3 and the first regulated convex portion 33 (width direction reinforcing rib 21), and the side wall 10 which is the width direction deviation preventing means 3a and the second regulated value. As described above, the predetermined clearances CL are provided between the protrusions 34 (length direction reinforcing ribs 22). Furthermore, the longitudinal reinforcing ribs 22 that also serve as the second restricted convex portions 34 and the side walls 10 of the trough body 1 have a cross-sectional volume that gradually decreases from the proximal end side to the distal end side, that is, both side surfaces are steep. It is configured to be a slope. Therefore, it is possible to easily and easily guide the lengthwise reinforcing rib 22 (the regulated convex portion 34) between the side walls 10 from above when the lid is closed.
In addition, each length direction reinforcing rib 22 is configured to be recessed from the upper end of the corresponding trough main body 1 in the closed state, so that even when laying on the outer side of the side wall 10 during laying, The side wall 10 can be prevented from being deformed by the pressure.

  In the above-described embodiment, each of the restricting protrusions 32 may be divided into two pairs by forming a notch-like portion 32a having a predetermined length at the central portion thereof as shown by a two-dot chain line in FIG. Acts in the same way as an integral part and belongs to the technical scope of the present invention. This also applies to other embodiments described below.

Second Embodiment FIGS. 6 to 8 are views showing a trough structure according to a third embodiment of the present invention. FIG. 6 (g) is a partial plan view of the trough body 1, and FIG. FIG. 7 is a partially enlarged cross-sectional view taken along arrow DD in FIG. 7G in the closed state, and FIG. 8 is an enlarged cross-sectional view taken along arrow EE in FIG.
Since the trough structure of this embodiment is a partial modification of the first embodiment, the same components as those of the trough structure of the first embodiment are denoted by the same reference numerals and description thereof is omitted. To do.

As shown in FIG. 6, in this embodiment, the lengthwise deviation preventing means 3 is provided in a portion different from that of the second embodiment in the restricting protrusion 32 at each end portion of the trough body 1. The restricting projections 32 which are the main parts are integrally formed on the upper end surfaces of the side walls 10 at the portions near the both ends of the trough body 1.
The restricting protrusions 32 and 32 at positions close to the end portions are arranged so as to restrict one first restricted convex portion 34 as a target (each close to one restricted convex portion 34 via CL). The lid 2 is arranged to restrict the displacement of the lids 2 in the opposite directions. That is, in FIG. 6, the right side restricting protrusions 32, 32 restrict only the leftward displacement of the lid 2, and the left opposite side restricting protrusions 32, 32 only deviate the lid 2 to the right. It is arranged to regulate.
As is apparent from this embodiment, the arrangement of the restricting protrusions 32 on each side of the trough structure can be freely designed as long as the displacement in both directions along the length direction of the lid 2 can be restricted.
The effect of this embodiment is the same as that of the trough structure of the first embodiment.

FIG. 9 is a partial cross-sectional view for explaining another embodiment of the trough structure and one embodiment of the method of laying the trough structure, and FIG. 10 is an arrow in FIG. FIG. 11 is a partial side view of the trough structure according to the embodiment of FIG. 9.

The trough main body 1 itself of the trough structure of this embodiment is substantially the same as the trough main body of the trough structure of the first embodiment, but the configurations of the restricting member and the restricted member that restrict the displacement of the lid 2 are different. In addition, the structure of the lid 2 is slightly different.
First, the lid 2 has such a length that one end portion closes from a position excluding the female coupling portion 13 of the trough body 1 to a position where the other end portion covers the male coupling portion 14. A short inner wrap portion 26 having a reduced cross-sectional outer shape is formed at one end portion (the right end portion in FIG. 9) of the lid 2. On the other hand, an outer wrap portion 27 corresponding to the inner wrap portion 26 is formed at the other end portion.
In a closed state where the lid 2 is placed on the trough body 1, a slight length corresponding to the length of the outer wrap portion 27 protrudes from the other end portion of the trough body 1.

  With such a configuration, the outer wrap portion 27 of the new trough structure that is closed as shown by a two-dot chain line, to the female connection portion 13 in the existing closed trough structure as shown by a solid line. Insert the side end part from above. Then, the end portion is accommodated in the female connecting portion 13 of the trough body of the existing trough structure, and the outer wrap portion 27 of the lid 2 of the new trough structure is overlapped with the inner wrap 26 of the existing trough structure. The structures are connected in a retaining state.

The length direction deviation preventing means 3 of the lid 2 includes a restriction convex portion 35 using a part of the vertical ribs 11 formed on the outer surface of the side wall 10 of the trough body 1 and a third restricted convex portion 36 ( It is comprised by the thing which replaces the control convex part 33 of 1st Embodiment.
As shown in FIGS. 10 and 11, between the regulating convex portions 35, 35, which are pairs of adjacent vertical ribs 11, 11 on both sides, respectively, are integrally formed on the lower surface of the side reinforcing rib 20 of the lid 2. Each formed regulated convex portion 36 is guided through a predetermined clearance CL (FIG. 11).
Each regulated convex portion 36 is disposed so as to be close to the upper outer surface of the corresponding side wall 10 via a predetermined clearance (not indicated) as shown in FIG. It also acts as a regulating member.

The longitudinal reinforcing ribs 22 of the lid 2 are also arranged so as to be close to the inner surface of the upper end portion of the corresponding side wall 10 and to act as the regulated convex portion 34 of the width direction deviation preventing means 3a.
In this embodiment, even if it does not have the effect | action as a controlled member of the width direction deviation prevention means to the controlled convex part 36 (even if the controlled convex part 36 is separated from the upper outer surface of the corresponding side wall 10). can do.
However, for example, because the space in the trough body 1 needs to be used effectively, the end of the longitudinal reinforcing rib 22 does not immerse in the trough body 1 and the height of the reinforcing rib 22 reaches the level of the width reinforcing member 21. When it is necessary to lower the height, the regulated convex portion 36 functions as a regulated member of the width direction deviation preventing means 3a as shown in the drawing, or the longitudinal direction reinforcing rib 22 and the upper end portion of the side wall 10 are It is necessary to form a corresponding restriction projection (not shown).

In this embodiment, as shown in FIG. 11, when the lid 2 moves to one side in the length direction of the trough body 1 (for example, the right direction in FIG. 11), the right end of the restricted convex portion 36 is close to the restricting convex portion. The lid 2 that is pressed against the portion 35 and integrated with the regulated convex portion 36 is regulated so as to stop shifting.
On the other hand, when the lid 2 moves to the left in the figure, the left end of the regulated convex portion 36 is pressed against the regulating convex portion 35 adjacent thereto, and the lid 2 integral with the regulated convex portion 36 stops moving. Be regulated.
The action of the width direction deviation preventing means 3a is the same as that of the trough structure of the first embodiment.

Also in this embodiment, when the slip preventing means 3 and 3a are installed at positions near both ends of the trough structure, their arrangement with respect to the center in the length direction of the trough body 1 is asymmetric. It is preferable for preventing an error in the front and rear position when the lid is closed.
In this embodiment, the stopper means 3 and 3a are provided at two positions in the longitudinal direction toward the positions on both sides of the trough structure in view of the balance of force, but the stopper means 3 and 3a are at least one of the trough structures. If it is formed at a location, it is necessary and sufficient for operation, and this is the same in the other embodiments.
Other functions and effects of the trough structure of this embodiment are almost the same as those of the second embodiment.

Next, the laying method will be described with reference to FIGS.
Reference numeral 4 denotes a trough bridge fixed to the column 5, and the angle bases 40, 41 are arranged via horizontal reinforcing plates 42 so that the vertical portions 40 a, 41 a face each other at a slightly wider interval than the width of the trough body 1. 41 horizontal parts are stacked. In this state, the columns 5 are connected to the connection base 44 that connects the columns 5 with each other via the connection plate 42, and these are fixed to the columns 5 with bolts and nuts, etc., so that the substantially square trough-shaped trough bridge 4 is sequentially constructed. To do.

A shallow groove-like upper bottom receiving plate 43 is laid on the inner bottom of the trough bridge 4, and trough structures are sequentially laid on the upper bottom receiving plate 43.
That is, as shown in FIG. 9, the trough body 1 is covered with a lid 2 and laid on the trough bridge 4. The procedure is that an anchor bolt is attached to the trough bridge 4 in advance, and the shaft of the bolt is passed through the insertion hole of the receiving plate 43 so as to protrude upward.
The trough structure in a closed state is placed along the upper groove-shaped upper bottom receiving plate 43, and the male portion of the next trough structure is moved to the portion where the female connection portion 13 of the trough structure is located. The connecting portions 14 are connected as described above, and at the same time, they are placed on the upper bottom receiving plate 43. In this manner, the trough bridges are laid while being sequentially connected, and then the nuts are tightened through the shafts of the bolts to the insertion holes of the flange portions 12 on both sides of the bottom portion of the trough structure to be fixed to the trough bridge 4. Alternatively, the trough structure is sequentially fixed on the trough bridge 4 with bolts and nuts while being laid.
When laying while linking the trough structure of another embodiment, it is laid while connecting the front end of the trough structure to be laid next to the rear end of the trough structure just laid in the state shown in FIG. That's fine.
According to the laying method of the trough structure in these embodiments, the lid 2 is prevented from slipping in the width direction and the length direction with respect to the trough body 1, and the construction cost is greatly increased by laying them together. Reduction is planned. Further, since the worker can safely walk on the lid during various operations, other operations are facilitated.

Although not shown in particular, if the trough structure in the closed state is laid in sequence by sandwiching the outside of the bottom of the trough structure between the two standing walls of the upper bottom receiving plate 43 of the trough bridge 4, it is not necessary to fix with a bolt. There is also. Moreover, not only the work of fixing with bolts is omitted, but the trough main body 1 and the lid 2 are not connected to each other with a lap portion, and the trough main body 1 and the lid 2 are brought into contact with each other to be laid. In some cases, it is possible to lay the site just by placing it on a foundation such as a trough bridge or concrete. In this way, when laying in contact with the ends of the trough structure, the cross section of the trough body abutting portion is thickened so that the front and rear trough structures can be successfully matched, If a notch and a protrusion that fits into the front and rear of the bottom of the trough body are provided, the trough body can be laid more stably. Further, when bolts are fixed to a foundation such as a trough structure or concrete, a bolt hole is provided in the flange portion 12 at the bottom of the trough body so that the trough structure is transported to the site in a closed state and laid. It becomes possible. This greatly simplifies the construction and enables a significant reduction in construction costs.

As described above, in the trough structure according to the present invention, the lid 2 does not move in the width direction or the length direction with respect to the trough body 1, so that an operator can place the trough structure on the trough structure in a laid state. It is safe to walk.
Further, since the lid 2 is prevented from slipping by the slip-preventing means, the trough body 1 and the lid 2 are fixed to each other, so that it is easy to handle at the time of laying and the laying work can be performed efficiently.

Other Embodiments In the length direction deviation preventing means 3, the regulated convex portion 36 can be freely designed as long as it can regulate the deviation of the lid 2 in both length directions. For example, as shown in FIG. 12, the regulated convex portion 36 is positioned so that the regulated convex portion 36 is located on both sides of the vertical rib 11 selected as the regulated convex portion 35 via a predetermined clearance. If 36 is formed in the side part lower part of the lid | cover 2, the shift | offset | difference to both of the length direction of the lid | cover 2 can be controlled.

DESCRIPTION OF SYMBOLS 1 Trough body 10 Side wall 11 Vertical rib 12 Flange part 13 Female connection part 14 Male connection part 2 Lid 20 Side part reinforcement rib 21 Width direction reinforcement rib 22 Length direction reinforcement rib 23, 27 Outer wrap part 24, 26 Inner wrap Part 3 Length direction deviation prevention means 3a Width direction deviation prevention means 32 Restriction projection 33 First restricted convex part 34 Second restricted convex part 35 Restricted convex part 36 Third restricted convex part 4 On truss bridge 43 Bottom plate

Claims (10)

On the outside of both side walls (10, 10) is made of a synthetic resin having a number of vertical ribs (11) along the height direction formed at predetermined intervals along the length direction, and is substantially U-shaped or U-shaped in cross section. A trough body (1) and a synthetic resin lid (2) that closes the upper end opening of the trough body (1), corresponding to the side wall (10) of the trough body (1) and the side wall (10). In a position closer to the side of the lid (2) to be moved, a length direction detent means (3) for preventing displacement of the lid (2) in the length direction of the trough body (1), and the trough body (1) possess a lid width direction displacement preventing means for preventing the displacement of (2) (3a) in the width direction of the longitudinal displacement preventing means (3) and the width direction displacement preventing means (3a ) Are provided at positions closer to both sides of the trough structure, and each of the length direction detent prevention means (3) is In a corresponding installation position, a restricting projection (32) formed on the upper end surface of the side wall (10) of the trough body (1) and a lid (2) formed on the back side of the lid (2) are connected to the trough body. And (1) a first restricted convex portion (33) pressed against the restricting protrusion (32) when moving in the length direction, and the restricting protrusion (3) in each length direction deviation preventing means (3). 32) is formed along the length direction of the corresponding side wall (10), and the first restricted convex part (33) is located in a state of sandwiching the restricting protrusion (32) from both ends, and the lid ( When 2) moves to one side in the length direction of the trough body (1), one first restricted convex part (33) is pressed against one end of the restricting protrusion (32), and the lid (2) is To the other end of the restricting projection (32) when moving to the other in the length direction Trough structure, wherein a first of the limiting protrusion of the square (33) is constructed in a state being pressed. On the back side of the lid (2), side reinforcing ribs (20) on both side edges and a number of width reinforcing ribs (21) continuous with the side reinforcing ribs (20) along the width direction at a predetermined interval. The trough structure according to claim 1 , wherein a part of the width direction reinforcing rib (21) also serves as the first restricted convex portion (33). Each width direction deviation prevention means (3a) is formed on the lid (2) at a corresponding installation position, and the side wall (10) when the lid (2) moves in the width direction of the trough body (1). The trough according to claim 1 or 2 , characterized in that the trough is constituted by a second restricted convex part (34) pressed against the upper part inside the restricting protrusion (32 ) formed on the upper end surface of Structure. The trough structure according to claim 3 , wherein the second restricted convex portion (34) has a cross-sectional area that gradually decreases from the proximal end side toward the distal end side. On the back side of the lid (2), side reinforcing ribs (20) on both side edges and a number of width reinforcing ribs (21) continuous with the side reinforcing ribs (20) along the width direction at a predetermined interval. And a longitudinal reinforcing rib (22) in a state perpendicular to the width reinforcing rib (21) and close to each side wall (10), the longitudinal reinforcing rib (22) being the second reinforcing rib (22). The trough structure according to claim 3 or 4 , wherein the trough structure also serves as a regulated protrusion (34). The trough body (1) has a female connecting portion (13) having an enlarged inner cross section at one end and a male connecting portion (14) corresponding to the female connecting portion (13) at the other end. and having each trough structure according to claim 1-5. The lid (2) has a length that covers one end portion from a position excluding the female coupling portion (13) of the trough body (1) to a position where the other end portion covers the male coupling portion (14). A short inner wrap portion (26) having a reduced cross-sectional outline is formed at the one end portion, and an outer wrap portion (27) corresponding to the inner wrap portion (26) is formed at the other end portion. The trough structure according to claim 6 , wherein: 8. When laying the trough structure according to claim 6 or 7 , wherein the trough body (1) is closed with a lid (2), next to the female connection portion (13) of the trough structure laid just before. A method for laying a trough structure, comprising the step of sequentially laying the trough structure while connecting the male connection portions (14) of the trough structure to be laid on the surface. When laying the trough structure according to any one of claims 1 to 7 , wherein the trough body (1) is closed with a lid (2), the next is the rear end of the trough structure laid just before. A method for laying a trough structure, comprising a step of sequentially laying the trough structure while abutting a front end portion of the trough structure to be laid. The trough structure is laid along a trough bridge (4) having a substantially square-shaped cross section, and flange portions (12) are integrally formed on both sides of the bottom of the trough body (1) in the trough structure, The method for laying a trough structure according to claim 8 or 9 , further comprising a step of fixing the flange portion (12) onto the trough bridge (4).

Images