JP6363283B1 - Protective cover - Google Patents

Abstract

Provided is a protective cover which is prevented from being detached from a cable to be protected.
A protective cover main body 10 having openings at both ends in the longitudinal direction and having a long member housed therein, an annular annular fixing member 20 disposed in a circumferential direction of the protective cover main body 10, The protective cover main body 10 includes two half pipes 15 and 15 that divide the protective cover main body 10 along the longitudinal direction. The protective cover main body 10 includes a half pipe in addition to the annular fixing member 20. 15 and 15 has a fixing part 30 for fixing each other, and the fixing part 30 is formed integrally with the half pipes 15 and 15, and the half pipes 15 and 15 are formed in the protective cover main body 10. The protective cover 100 which prevents separating in the direction X orthogonal to the longitudinal direction of the.
[Selection] Figure 1

Description

  The present invention relates to a protective cover, and more particularly to a protective cover that is prevented from being removed from a protection target (long member) such as a submarine cable or a water pipe.

  2. Description of the Related Art Conventionally, cables such as submarine cables are composed of an iron wire sheath or a strong cable protection structure similar to them so as to withstand an external environment. Submarine cables are often exposed to harsh conditions such as impacts when dropped on the seabed, impacts caused by water pressure, tidal current, temperature, contact with stones, rocks, etc. Damage is likely to occur. The exterior structure (cable protection structure) may be damaged by a physical external force. Therefore, there is a need for a cable cover (protective cover) that can withstand exposure to such an external environment.

  In addition, there is a cover that protects the entire length of the cable and a protective duct that partially protects the cable, but a protective duct that is easier to cope with in the external environment of the cable is known as a highly versatile one. (For example, refer to Patent Document 1). In addition, as a protective pipe that covers and protects submarine cables, etc., an engaging part is provided for fixing the split pipe body in combination, and a buckle body that is inserted and engaged with this engaging part is provided separately. Is known (see, for example, Patent Document 2).

JP 2007-40532 A Japanese Patent No. 3609336

  However, in the duct described in Patent Document 1, the annular fixing member may deteriorate and be damaged due to long-term use. For example, in the case of a protective cover for a cable such as a submarine cable, it may be exposed to tidal currents or hit sand, stones, rocks, etc. on the seabed, so that the annular fixing member is likely to deteriorate and break easily. is there. When the annular fixing member is broken, the fixed state of the half pipe is released, the protective cover is removed, and the cable stored in the protective cover is exposed to the outside. In particular, when one annular fixing member breaks (breaks), there is also a problem that other annular fixing members are also broken in a chain and other protective covers are successively removed. Further, in the protective pipe described in Patent Document 2, the buckle body for connecting the half pipe bodies is separated from the half pipe body (that is, the half pipe body and the buckle body are different from each other). Since it is a separate body, there is a possibility that the engagement with the engaging portion is released due to an external force.

  The present invention has been made in view of such problems of the prior art, and the object of the present invention is to release the fixed state of the halved tubular body, which is a constituent member, and to protect objects such as cables. (Providing a protective cover which is prevented from being removed from a long member (hereinafter, may be simply referred to as “cable”). In other words, in the present invention, it is difficult to remove from a protection object such as a cable. Provide a cover.

  According to the present invention, the following protective cover is provided.

[1] A protective cover main body having openings at both ends in the longitudinal direction, in which the long member is housed,
An annular annular fixing member disposed in the circumferential direction of the protective cover body,
The protective cover body consists of two halved pipes that divide the protective cover body along the longitudinal direction,
The protective cover body has a fixing portion for fixing the half pipes to each other in addition to the annular fixing member,
The fixing portion is formed integrally with the half pipe, and is a protective cover that prevents the half pipe from being separated in a direction X perpendicular to the longitudinal direction of the protective cover body .
The protective cover main body has a thick portion formed in a thickness toward the contact surface of the half pipe constituting the protective cover main body in a cross section orthogonal to the longitudinal direction,
The thickened portion extends outward in the radial direction in one of the half pipes, and is formed on the convex part formed on the contact surface part of the half pipe and the other half pipe Formed, the half pipes move in the radial direction on the contact surface to each other, thereby forming the fixed portion having a concave portion that fits while engaging with the convex portion,
The fixing portion is formed to make a pair with one side and the other side of the protective cover body,
The protective cover body is made of synthetic resin .

[2] The protective cover according to [1], wherein the fixing portion is formed so as not to protrude from an outer edge of the protective cover.

[3] The fixed portion includes the convex portion formed only on one side portion and the concave portion formed only on the other side portion,
The protective cover according to [1] or [2], wherein the two half pipes are combined and then slid along the contact surface to fix the two half pipes .

[4] The fixing unit according to any one of [1] to [ 3 ] , further including a through hole formed in both of the half pipes and communicating with each other, and a fixing pin fitted into the through hole. Protective cover as described.

[5] The protective cover according to [4], wherein the fixing pin is formed in the thick portion so as not to protrude from an outer edge of the protective cover.

[6] The protective cover according to any one of [1] to [5], wherein the fixing pin is disposed between the fixing portion and another fixing portion adjacent to the fixing portion .
[7] The protective cover according to any one of [1] to [6], wherein an outer peripheral shape of the protective cover body is a flat shape in a cross section orthogonal to the longitudinal direction.
[8] The protective cover according to any one of [1] to [7], wherein the annular fixing member is disposed at both ends in the longitudinal direction of the protective cover body.

[ 9 ] A protective cover body having openings at both ends in the longitudinal direction, in which the long member is housed,
An annular annular fixing member disposed in the circumferential direction of the protective cover body,
The protective cover body consists of two halved pipes that divide the protective cover body along the longitudinal direction,
In the cross section perpendicular to the longitudinal direction, the outer peripheral shape of the protective cover body is a protective cover having a flat shape ,
The protective cover main body has a thick portion formed in a thickness toward the contact surface of the half pipe constituting the protective cover main body in a cross section orthogonal to the longitudinal direction,
The thickened portion extends outward in the radial direction in one of the half pipes, and is formed on the convex part formed on the contact surface part of the half pipe and the other half pipe Formed, the half pipes move in the radial direction on the contact surface to each other, thereby forming the fixed portion having a concave portion that fits while engaging with the convex portion,
The fixing portion is formed to make a pair with one side and the other side of the protective cover body,
The protective cover body is made of synthetic resin .

[10] The fixing part, the protective cover according to [9], which is formed so as not to protrude from the outer edge of the protective cover.
[11] The fixed portion includes the convex portion formed only on one side portion and the concave portion formed only on the other side portion,
The protective cover according to [9] or [10], wherein the two half pipes are combined and then slid along the contact surface to fix the two half pipes.

  The protective cover of the present invention prevents the halved tubular body, which is a constituent member, from being released from being detached from a cable or the like after being released from the fixed state. That is, in the present invention, even if the annular fixing member may be damaged due to aging deterioration due to long-term use or contact with sand, stones, rocks, etc. on the seabed, the protective cover is protected from the cable. It becomes difficult to come off. Further, since the shape of the protective cover is a predetermined shape, it is difficult for the protective cover to rotate during use (rotation with the longitudinal direction as the central axis), and the protective cover is less likely to hit sand, stones, rocks, etc. on the seabed. . That is, the cause of breakage can be avoided as much as possible.

It is a perspective view showing typically one embodiment of a protection cover of the present invention. It is a top view which shows typically one Embodiment of the protective cover of this invention. It is a side view which shows typically one Embodiment of the protective cover of this invention. It is a top view which shows typically the state which looked at one Embodiment of the protective cover of this invention from the one end surface side. It is sectional drawing which shows the AA cross section of FIG. 3 typically. It is sectional drawing which shows the BB cross section of FIG. 3 typically. It is a disassembled perspective view which shows the state which decomposed | disassembled the protective cover shown in FIG. It is a perspective view which shows typically the protective cover main body in other embodiment of the protective cover of this invention. It is a perspective view which shows typically the fixing pin in one Embodiment of the protective cover of this invention. It is sectional drawing which shows typically the cross section which passes along the central axis of the fixing pin of FIG. It is a perspective view which shows typically other embodiment of the protective cover of this invention. It is a top view which shows typically the state which looked at the protective cover shown in FIG. 11 from the one end surface side. FIG. 2 is a perspective view schematically showing a state in which a plurality of protective covers shown in FIG. 1 are connected to each other to protect a long member.

  Hereinafter, embodiments of the present invention will be described. However, the present invention is not limited to the following embodiments, and based on ordinary knowledge of those skilled in the art without departing from the spirit of the present invention. It should be understood that modifications, improvements, and the like appropriately added to the embodiments described above fall within the scope of the present invention.

[1] Protective cover (first embodiment):
One embodiment of the protective cover of the present invention is a protective cover 100 shown in FIGS. The protective cover 100 has openings 11 at both ends in the longitudinal direction, and is disposed in the protective cover body 10 in which the long member 200 (see FIG. 13) is housed, and in the circumferential direction of the protective cover body 10. An annular fixing member 20. The protective cover main body 10 includes two halved pipes 15 and 15 that divide the protective cover main body 10 along the longitudinal direction. Further, the protective cover main body 10 has a fixing portion 30 for fixing the half pipes 15 and 15 to each other. And this fixing | fixed part 30 prevents separating the half pipe bodies 15 and 15 in the direction X orthogonal to the longitudinal direction of the protective cover main body 10. FIG.

  Such a protective cover is prevented from being detached from a cable or the like after the fixed state of the half pipe as a constituent member is released.

  The “longitudinal direction” means a length direction corresponding to a direction in which a long member (for example, a cable such as a submarine cable) extends. That is, it refers to the same direction as the direction in which the long member extends when the long member is covered (protected) with the protective cover. Further, “preventing the protective cover body from being separated in the direction X” means preventing the half pipes constituting the protective cover body from being separated from each other.

  Here, conventionally, the protective cover has the two half-split tube members fixed to each other by the annular annular fixing member. However, the annular fixing member may be damaged due to deterioration over time. There was a problem that the cover would come off the cable. In the present invention, such a problem is solved, and even if the annular fixing member is damaged, the two halved tubular bodies are maintained fixed to each other by the fixing portion, and the protective cover is provided. It is possible to avoid disconnection from the cable.

  The protective cover 100 has a connecting portion 40 (connecting means) for connecting a plurality of protective covers in the longitudinal direction. FIG. 13 shows a state in which a plurality of protective covers are connected in the longitudinal direction. The connection means is not particularly limited, and is not limited to the configuration of the connection portion 40. In the protective cover 100, a connecting portion 40 having an outer cylinder portion 41 at one end portion and an inner cylinder portion 42 that encloses and fits the outer cylinder portion 41 at the other end portion is formed. FIG. 13 shows a state in which a plurality of protective covers 100 are connected in the longitudinal direction.

  The protective cover 100 has a cylindrical shape into which the long member 200 can be inserted. The outer peripheral shape of the protective cover 100 (the outer peripheral shape in the cross section orthogonal to the longitudinal direction) is not particularly limited, and may be, for example, a circle, an ellipse, a triangle, a quadrangle, or the like. Among these, a circle and an ellipse are preferable, and an ellipse (a shape in which a circle is flat) is particularly preferable. Thus, when the outer peripheral shape is elliptical, for example, when the protective cover 100 is installed on the seabed together with the seabed cable, the protective cover 100 can be made difficult to rotate around the longitudinal direction as the central axis. As a result, the protective cover 100 is less likely to hit sand, stones, rocks, etc. on the seabed, so that the cause of breakage can be avoided as much as possible.

  Here, in the present specification, the “circular shape” for the outer peripheral shape means not only a perfect circle but also a round shape. In addition, the “elliptical shape” means a shape in which a circle is crushed (flat circle (flat shape)). Further, in this specification, “rotate” is not limited to one rotation (turning 360 °), but is a concept including moving by shaking at a predetermined angle.

  The protective cover 100 of FIGS. 1-7 has shown the protective cover whose outer periphery shape is an ellipse.

  Long members such as cables are installed not only in the sea (sea floor) but also in various waters such as dams, rivers, lakes, and artificial pools. Can occur. In addition, the “long member” is not limited to a cable such as a submarine cable, and includes a pipe or the like for transporting liquid or gas in addition to this cable. Specific examples include a submarine cable, a submarine water pipe, and a submarine communication cable.

[1-1] Protective cover body:
The protective cover main body 10 constitutes the main body of the protective cover 100, has openings 11 at both ends in the longitudinal direction, and houses the long member 200 (see FIG. 13). And the protective cover main body 10 consists of the two half pipe bodies 15 and 15 which divide | segment this protective cover main body 10 along a longitudinal direction as mentioned above. The “opening” means open portions formed at both ends of the protective cover body. And the elongate member 200 is extended outside from this opening part 11 (refer FIG. 13). Further, “the long member is accommodated in the interior” does not mean that the entire long member is accommodated in one protective cover, but a part of the long member is the length of one protective cover. It means wrapping only for minutes. Therefore, it means that the long member is disposed in the inside from the “opening” at one end of the protective cover body to the “opening” at the other end.

  “The protective cover body consists of two halved tubes that divide the protective cover body along the longitudinal direction” means that the two halved tubes along the longitudinal direction (length direction) of the protective cover body. It can be divided into Each half pipe body is formed with a semicircular concave groove extending in the longitudinal direction, and when the two half pipe bodies are combined with each other, a space capable of accommodating a long member is formed therein. . The shape and size of this space can be appropriately determined according to the long member. For example, the shape of the space in which the long member can be stored can be circular in a cross section orthogonal to the longitudinal direction.

  The outer peripheral shape of the protective cover main body 10 is the same as the outer peripheral shape of the protective cover 100, and is preferably a flat shape (flat circular shape (elliptical shape)) as described above. By satisfying such a condition, there is an advantage that the protective cover 100 is more difficult to rotate. In addition, the protective cover is formed by combining the two half pipes with each other, but it is easier to match the two half pipes with each other.

  When the outer peripheral shape of the protective cover main body 10 is an ellipse, the protective cover main body 10 has a cross-section perpendicular to the longitudinal direction, and increases in thickness toward the contact surface 15a of the half pipes 15 and 15 constituting the protective cover main body 10. It may be thick. If it does in this way, since the half pipes 15 and 15 are thick in the contact part, it becomes easy to form the fixing | fixed part 30 (that is, the area | region which provides the fixing | fixed part 30 can fully be ensured). Further, it is possible to prevent the strength of the half pipes 15 and 15 (protective cover main body 10) from being lowered due to the provision of the fixing portion 30. In addition, since thick portions are formed at both end portions of the long side of the oval protective cover body 10, the thick portions become weights, for example, when external force (external force such as tidal current) is applied from the side. The center of gravity of the cover 100 is stable, and it becomes easy to maintain the balance of posture when placed on the seabed. For this reason, rotation caused by tidal currents is further prevented. Furthermore, when the convex part and fixing pin which are mentioned later are employ | adopted as the fixing | fixed part 30, it can be set as the structure which does not expose these. That is, the structure which prevents the convex part and fixing pin which are fixing | fixed parts from protruding from the outer edge of a protective cover is employable. Then, by preventing the convex portion and the fixing pin from protruding from the outer edge of the protective cover, it is possible to prevent, for example, a stone or a rock on the seabed from directly hitting the convex portion or the fixing pin. In other words, the protective cover body protects the fixed part such as the convex part, and the fixed part such as the convex part can be prevented from being damaged, and the fixed state can be secured more reliably. it can.

[1-1-1] Fixed part:
The fixing part 30 is a fixing means for fixing the two half pipes 15 and 15 constituting the protective cover main body to each other, and is provided in addition to the annular fixing member. And this fixing | fixed part 30 is integrally formed with the half pipes 15 and 15, and these half pipes 15 and 15 are spaced apart in the direction X orthogonal to the longitudinal direction of the protective cover main body 10. FIG. To prevent.

  In addition, "one formed integrally with the half pipe" means that the half pipe and the fixed part are integrated (in other words, the fixed part is a part of the half pipe). In the present invention, the half pipe body and the fixing portion are not separate bodies. Thus, when the half pipe and the fixed part are integrally formed, the fixed part made of a separate body (separate member) is detached by an external force, and the fixed state of the half pipe is released. Can be avoided.

  In the conventional protective cover, when the protective cover body is fixed, for example, an annular fixing member made of resin or metal is used. However, for example, impact when colliding with the hull when dropping a cable to the sea floor, impact caused by contact with stones or rocks when placed on the sea floor, severe water pressure, tidal current, temperature, etc. in the sea When exposed to the environment, the annular fixing member may be subjected to stress such as twisting. For this reason, the annular fixing member may be damaged, and the protective cover may be detached from the cable. In addition to the above-described stress being applied, the annular fixing member is easily damaged due to aging and corrosion.

  Therefore, by providing the fixing portion 30 in addition to the annular fixing member 20, the fixing state of the half pipe can be reliably maintained. Even if the annular fixing member 20 is damaged, the fixing portion 30 The protective cover can be prevented from coming off the cable.

  The fixing portion 30 is preferably formed to be paired with the one side portion 13 and the other side portion 13 of the protective cover main body 10. When the fixing portion 30 is formed in this way, the force applied to the fixing portion 30 during fixing can be evenly distributed. Therefore, it can prevent more reliably that a protective cover remove | deviates from a cable. “To make a pair” means “in a state where the force applied to the fixing portion is evenly distributed”. Specifically, as shown in FIG. 2, in the longitudinal direction of the protective cover main body 10. It is preferable that the fixing portions are respectively formed on the side portions corresponding to the same position.

[1-1-1a] Uneven portion:
Fixing unit 30, it is one having at one half tube 15 and the projections 35 extending in the radial direction, is formed in the other half tube member 15 and the recess 36 which mate with projections 35, the Is preferred. By setting it as such a convex part and a recessed part, even when the cyclic | annular fixing member 20 is damaged, a fixed state can be maintained more reliably. In particular, the convex portion 35 and the concave portion 36 are preferably fitted to each other while being engaged. That is, it is preferable that the convex portion 35 is not simply fitted into the concave portion 36 but once the convex portion 35 is fitted, the convex portion 35 and the concave portion 36 are engaged to make it difficult for the convex portion 35 to come out of the concave portion 36. The convex portion 35 and the concave portion 36 are preferably made of the same material as that of the protective cover body 10. When the protective cover 100 is deformed by an external force and the like as described above, the convex portion 35 and the concave portion 36 are deformed in the same manner as the protective cover main body 10, so that the convex portion 35 is not easily detached from the concave portion 36. . Further, the problem that the convex portion 35 and the concave portion 36 deteriorate with time is less likely to occur. Furthermore, the convex portion 35 and the concave portion 36 may be a portion that is integral with the protective cover body 10 (a portion that is integrally molded). If the convex portion 35 and the concave portion 36 and the protective cover main body 10 are separated, the number of parts increases, so that the manufacturing cost increases, and the fixing work between the half pipes 15 and 15 may be troublesome. .

  As shown in FIG. 5, the convex portion 35 is formed to extend outward in the radial direction of the half pipe body 15. And this convex part 35 can be formed in the part of the contact surface 15a of the half pipe body 15, and the position in the longitudinal direction of the protective cover 100 does not have a restriction | limiting in particular. Here, as shown in FIG. 7, each half pipe 15 is formed so as to be paired with one side 13 and the other side 13, and the convex portion 35 is formed only on one side. The recess 36 that is formed and fits with the protrusion 35 may be formed only on the other side. If it does in this way, after putting together the two half pipes 15 and 15, the two half pipes 15 and 15 can be easily fixed mutually by making it slide along the contact surface 15a. Further, with such a configuration, after the cables are arranged in the protective cover, the halved pipes 15 and 15 are difficult to slide along the contact surface 15a due to the presence of the cables (that is, the cables are halved). Limit the slide of the tubes 15, 15). Furthermore, the fixing force by the convex part 35 and the recessed part 36 arises equally. As a result, the fixed state is more difficult to be released. In addition, the convex part 35 is "formed so as to extend in the radial direction of the half pipe 15" as described above, after the two half pipes 15 and 15 are combined, It means that the convex portion 35 extends so that the two half pipes 15 and 15 can be fixed to each other by sliding along.

  Further, the shape of the convex portion 35 is not particularly limited as long as it has a portion that fits into the concave portion 36 as described above. For example, the convex portion 35 has a hook shape (a shape in which a protrusion is formed at the tip) (a claw portion). ) Is also preferable. Thus, a fixed state is more reliably maintained by a convex part being hook-shaped. Further, the size of the convex portion 35 may be made larger than the size of the concave portion 36.

  The number of the fixing portions 30 including the convex portions 35 and the concave portions 36 is not particularly limited and can be determined as appropriate.

[1-1-1b] Fixing pin:
The fixing portion 30 may further include a through hole 37 that is formed in both the half pipes 15 and 15 and communicates with each other, and a fixing pin 38 that fits into the through hole 37. By having the fixing pin 38, the movement of the two half pipes 15, 15 can be further restricted (prevented).

  The shape of the fixing pin 38 is not particularly limited, and may be any structure as long as it can be prevented from being separated from each other by fitting into the through hole 37. For example, FIG. A fixing pin (double pin 50) having a double structure as shown in FIG. The double pin 50 includes a cylindrical outer peripheral member 51 having a plurality of step portions 51 a formed on the side surface thereof and a columnar central member 53 disposed inside the outer peripheral member 51. doing. By using the double pin 50 having such a structure, it is possible to more reliably prevent the half pipes 15 and 15 from being separated from each other.

  The outer peripheral member 51 has the step part 51a as described above (see FIG. 10), and this step part 51a favorably prevents the double pin 50 from easily coming out of the through hole 37. The number of the step portions 51a is not particularly limited and can be determined as appropriate. Further, the outer peripheral member 51 is cut out by a slit 51b (see FIG. 9) in which a part of the cylindrical shape extends in the central axis direction. By forming the slit 51b in this way, the outer peripheral member 51 can be expanded when the central member 53 is inserted. Therefore, the central member 53 can be easily inserted. Further, the outer peripheral member 51 has a locking surface 51c (see FIG. 9) which is a surface orthogonal to the central axis at the tip. Furthermore, the outer peripheral member 51 has a flange portion 51d at its head. The slit 51b may not be formed.

  As shown in FIG. 10, the central member 53 has a slit 53 a formed in a cross shape at the tip, and further has a tip protrusion 53 b at the tip. Further, the central member 53 has a flange portion 53c at its head. The slit 53a may not be formed.

  Here, when the central member 53 is inserted into the outer peripheral member 51, as described above, the outer peripheral member 51 is expanded and the distal end portion of the central member 53 is narrowed. When the tip protrusion 53 b of the central member 53 comes out of the outer peripheral member 51, the tip protrusion 53 b expands (returns to the original), and the tip protrusion 53 b contacts the locking surface 51 c of the outer member 51. In this way, the central member 53 is prevented from falling off from the outer peripheral member 51.

  The material of the fixing pin 38 is not particularly limited, but a resin, metal, or the like applied to the use environment can be adopted. The number and position of the fixing pins 38 are not particularly limited.

  There is no restriction | limiting in particular as a material of the protective cover main body 10, A synthetic resin, such as rubber | gum or an elastomer with little wear-resistant and long-term deterioration, can be employ | adopted. Examples thereof include polyurethane and chloroprene.

[1-2] Annular annular fixing member:
The annular annular fixing member 20 is disposed in the circumferential direction of the protective cover body 10 and is a circular ring, that is, a ring-shaped fixing member. The annular fixing member 20 prevents the half pipes 15 and 15 from separating from each other.

  As the annular fixing member 20, a conventionally known annular fixing member can be used, and the number and position thereof are not particularly limited. For example, as shown in FIGS. 1 to 3, one is provided at the center of the protective cover body 10. The annular fixing member 20 can be arranged, and one annular fixing member 20 can be arranged at one end. The annular fixing member 20 disposed at one end portion is disposed at a connecting portion when a plurality of protective covers 100 are connected and used to strengthen the connection between adjacent protective covers 100.

  When arranged in the connecting portion, specifically, the connecting portion is generally fixed by passing the connecting portion through the annular fixing member 20 and tightening the annular fixing member 20 or the like. Note that the present invention is not limited to this case.

  Furthermore, the shape, size, material and the like of the annular fixing member 20 are not particularly limited, and a known shape, size, material and the like can be used. The material of the annular fixing member 20 is preferably a material having good corrosion resistance and corrosion resistance, and examples thereof include titanium.

[2] Protective cover (second embodiment):
Another embodiment of the protective cover of the present invention is a protective cover 101 shown in FIGS. 11 and 12. The protective cover 101 has openings 11 at both ends in the longitudinal direction, a protective cover body 10 in which a long member is accommodated, and an annular annular fixing member disposed in the circumferential direction of the protective cover body 10 20. The protective cover main body 10 includes two halved pipes 15 and 15 that divide the protective cover main body 10 along the longitudinal direction. And the outer periphery shape of the protective cover main body 10 is a flat shape (namely, elliptical shape) in the cross section orthogonal to a longitudinal direction.

  In such a protective cover 101, it is difficult for the protective cover to rotate (rotation about the longitudinal direction as the central axis) during use, and the protective cover does not easily hit sand, stones, rocks or the like on the seabed. That is, the cause of breakage can be avoided as much as possible. Moreover, when it is such a shape, when the two half pipes 15 and 15 are match | combined with each other and the protective cover 101 is formed, the operation | work which matches two half split pipes 15 and 15 mutually is easy.

  Similarly to the protective cover 100 described above, the protective cover body 10 has a cross section orthogonal to the longitudinal direction, and the protective cover body 10 is directed toward the contact surface 15a of the half pipes 15 and 15 constituting the protective cover body 10. It is preferable that it is thick. By adopting such a configuration, the same effect as that of the protective cover 100 described above can be obtained. The protective cover in the present embodiment can adopt the same configuration as that of the protective cover 100 (first embodiment) described above for other configurations.

[3] How to attach the protective cover:
The method for mounting the protective cover of the present invention will be described below. First, prepare two half-split tubes for constructing the protective cover, set a long member so as to be housed (enclosed) in the two half-split tubes, and install the two half-split tubes. Match. At this time, when connecting with another protective cover, the two half pipes are combined so that the other protective cover connecting portion and the connecting portion of this protective cover overlap.

  As a method of combining the two half pipes, the half pipes are brought into contact with each other at the contact surface, and then one or both of them are slid to insert the convex part which is the fixing part into the concave part. If it is difficult to slide, the convex portion may be inserted into the concave portion using a jig or the like. Further, when a fixing pin is also used as the fixing portion, the fixing pin is pushed into the through hole. Here, when a pin having a double structure is used as the fixing pin, first, the outer peripheral member is inserted into the through hole, and then the central member is inserted inside the outer peripheral member, and is pushed in until the central member cannot be removed. . In this way, the fixing pin can be arranged. Next, a fixing band to be an annular fixing member is wound around the protective cover main body, and the fixing band is tightened to fix the fixing band by the annular fixing member. The procedure of the fixing work is not limited to the above procedure and can be determined as appropriate.

  By repeating the above operation, a long member (cable such as a submarine cable) can be covered with a plurality of protective covers. After covering (protecting) the long member with a protective cover, it is sequentially put into the sea or the like. FIG. 13 shows a state in which the long member 200 is protected by connecting a plurality of protective covers 100. Here, FIG. 13 shows a state in which two protective covers 100 are connected, but the protective cover 100 can be appropriately connected by a desired length.

  The protective cover of the present invention can be used as a protective cover for cables or the like disposed on the seabed, for example.

10: protective cover main body, 11: opening, 13: side, 15: half pipe, 15a: contact surface, 20: annular fixing member, 30: fixing part, 31: slide limiting part, 33: separation limiting part , 35: convex portion, 36: concave portion, 37: through hole, 38: fixing pin, 40: connecting portion, 41: outer cylindrical portion, 42: inner cylindrical portion, 50: double pin, 51: outer peripheral member, 51a: Stepped portion, 51b: slit, 51c: locking surface, 53: center member, 53a: slit, 53b: tip protrusion, 53c: flange portion, 100, 101: protective cover, 200: long member.

Claims (11)

A protective cover body having openings at both ends in the longitudinal direction, and a long member housed therein;
An annular annular fixing member disposed in the circumferential direction of the protective cover body,
The protective cover body consists of two halved pipes that divide the protective cover body along the longitudinal direction,
The protective cover body has a fixing portion for fixing the half pipes to each other in addition to the annular fixing member,
The fixing portion is formed integrally with the half pipe, and is a protective cover that prevents the half pipe from being separated in a direction X perpendicular to the longitudinal direction of the protective cover body .
The protective cover main body has a thick portion formed in a thickness toward the contact surface of the half pipe constituting the protective cover main body in a cross section orthogonal to the longitudinal direction,
The thickened portion extends outward in the radial direction in one of the half pipes, and is formed on the convex part formed on the contact surface part of the half pipe and the other half pipe Formed, the half pipes move in the radial direction on the contact surface to each other, thereby forming the fixed portion having a concave portion that fits while engaging with the convex portion,
The fixing portion is formed to make a pair with one side and the other side of the protective cover body,
The protective cover body is made of synthetic resin . The protective cover according to claim 1, wherein the fixing portion is formed so as not to protrude from an outer edge of the protective cover. The fixed part is composed of the convex part formed only on one side part and the concave part formed only on the other side part,
The protective cover according to claim 1 or 2, wherein after the two half pipes are combined, the two half pipes are fixed by sliding along the contact surface. The fixing unit further protective cover according to any one of claims 1 to 3 having a through hole communicating with each other are formed on both the half tube member, and a fixing pin fitted in the through hole, the . The protective cover according to claim 4, wherein the fixing pin is formed in the thick portion so as not to protrude from an outer edge of the protective cover. The protective cover according to claim 1, wherein the fixing pin is disposed between the fixing portion and another fixing portion adjacent to the fixing portion. The protective cover according to any one of claims 1 to 6 , wherein an outer peripheral shape of the protective cover main body is a flat shape in a cross section perpendicular to the longitudinal direction. The protective cover as described in any one of Claims 1-7 by which the said cyclic | annular fixing member is arrange | positioned at the both ends of the longitudinal direction of a protective cover main body. A protective cover body having openings at both ends in the longitudinal direction, and a long member housed therein;
An annular annular fixing member disposed in the circumferential direction of the protective cover body,
The protective cover body consists of two halved pipes that divide the protective cover body along the longitudinal direction,
In the cross section perpendicular to the longitudinal direction, the outer peripheral shape of the protective cover body is a protective cover having a flat shape ,
The protective cover main body has a thick portion formed in a thickness toward the contact surface of the half pipe constituting the protective cover main body in a cross section orthogonal to the longitudinal direction,
The thickened portion extends outward in the radial direction in one of the half pipes, and is formed on the convex part formed on the contact surface part of the half pipe and the other half pipe Formed, the half pipes move in the radial direction on the contact surface to each other, thereby forming the fixed portion having a concave portion that fits while engaging with the convex portion,
The fixing portion is formed to make a pair with one side and the other side of the protective cover body,
The protective cover body is made of synthetic resin . The protective cover according to claim 9, wherein the fixing portion is formed so as not to protrude from an outer edge of the protective cover. The fixed part is composed of the convex part formed only on one side part and the concave part formed only on the other side part,
The protective cover according to claim 9 or 10, wherein after the two half pipes are combined, the two half pipes are fixed by sliding along the contact surface.

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