CN1122525A

CN1122525A - Cable protection device

Info

Publication number: CN1122525A
Application number: CN95109693A
Authority: CN
Inventors: 斯提芬·基恩利塞德
Original assignee: Tasman Cable Co
Current assignee: Tasman Cable Co
Priority date: 1994-08-01
Filing date: 1995-07-31
Publication date: 1996-05-15
Also published as: AU701362B2; TW288220B; JPH08196011A; AU2711995A; NZ272618A; KR960008863A; AUPM719894A0

Abstract

The invention discloses a protective tube part used for an electric/optical cable, particularly providing a submarine cable with the mechanical method protection. The tube part consists of two tube shells and a middle tube part with a hollow hemisphercal part on each end is formed when the two tube parts are matched. One end part consists of a pivotal clamping device which can lead a plurality of tube parts to be connected without fixing the tube shells as a whole tightly. Each sequential tube part is locked with the tube shell of the previous tube part and the hemispherical part provides a connecting method by joints.

Description

Cable protecting device

The present invention relates to be used for the object that mechanical means is protected a kind of extension, for example, conduit or cable are not only submarine cable especially.

As everyone knows, after cable was emitted by the cable laying container or laid by the diver, by the cast iron pipe parts that manually assembling connects with the joint to cable, to being laid on shallow water, promptly the depth of water partly provided the mechanical means protection less than the submarine cable of 500M.Each pipeline section, approximately 500mm is long, the shell that comprises two pairings, packed cable and form hollow ball at every end of pipeline section when shell meshes around cable in the vertical, this hollow ball allows a pipeline section to be connected to the armor that forms the encirclement cable of continuous length on the last pipeline section with articulated manner.Each pipeline section is tightened by bolt.

The shortcoming of above-mentioned known installation method is assembling and every section bolt is spent 1 minute together that this has just increased total cable mounting cost.Advancing of cable laying container must be slowly to adapt to every needed period of assembling.In addition, be used for the tight shell of bolt bolt together normally steel and also be easy to the corrosion.

An object of the present invention is to provide the armor duct member that articulated type connects, it does not need the bolt bolt tight, therefore can be very fast assembled.

According to the present invention; provide a kind of protection tube parts in order to protect one section extension; described duct member comprises first shell parts and second shell parts; each shell parts comprises the intermediate part of the halfpipe cross section of a prolongation; the intermediate part stops at first end and second end respectively; each end is the hollow hemisphere shape of brachymemma; the first end of each shell parts described here comprises pivotable jockey; in order to mutual pivotal engagement so that clamp first shell and thereby second shell forms a pipe; this pipe at one end has first hollow ball-shape part of opening that the second hollow ball-shape part of opening is arranged at the other end; this is effective to come one section described extension of packing, and this extension passes pipe and extends.

According to another kind of pattern of the present invention, provide a kind of duct member of the above-mentioned type to install with the joint connection, on comprising that cable-clamping device is attached to described cable a bit, that is the starting point of described a plurality of duct members, and described cable-clamping device comprises that a ball type device is used for working in coordination at the joint connection mode and the inner surface of the hollow ball part of first duct member of cascade.

For the present invention is implemented easily, an embodiment narrates together with relevant accompanying drawing, wherein:

Fig. 1 is the perspective view of a duct member of the present invention.

Fig. 2 represent two duct members of separating surround cable assembled be connected.

Fig. 3 represents that a cable clip is used to assemble the cascade of duct member.

Fig. 4 represents that a jockey is used to connect duct member cascade separately.

With reference to Fig. 1, duct member comprises two and half parts, shell A and shell B.Shell A comprises a mid portion 1 that hollow cylindrical cross section is arranged.At each end of mid portion 1 is hollow by the hemisphere portion 2 and 3 of opening 5 and 6 brachymemmas.Hemisphere portion 2 has two coaxial outwardly directed steel axles 7 and 8, and their lateral parts is cut off and forms flat surface 9 and 10.Axle 7 and 8 axis are in as on the identical plane of the top edge 11 of shell A, and 15 ° of angles of the plane surface 9 of axle 7 and 8 and 10 residing planes and top edge 11 formation.The side web 12 of two reinforcements and 13 and central web (not shown) are positioned at the back side of hemisphere portion 2.Stretch out a

shop bolt

14 and 15 from each side web, and on each side web, pin-and-

hole

16 and 17 are arranged.

Shell B is identical with pipe A basically, the hook 18 and the 18a that provide a pair of size to match except shell B with the minor axis 7 and 8 of shell A, and side web 19 and the 19a that has socket also is provided, one of socket 20 shows with the

14 and 15 of shell A to cooperate.

Side web

19 and 19a also provide the bolt in 16 and 17 bolts hole of the screw hole (not shown) that overlapped button and insertion shell A to cooperate.

Hook 18 and 18a by shell B are meshed with cooperation mode with minor axis 9 and 8 separately, shell A and B are pivotally combined, and form a duct member.The

14 and 15 of shell A is placed in the socket 20 of cooperation, aims to keep two shells.

Shell is made by any suitable materials such as plastics or metal, but under the situation of protection submarine cable, preferably makes by cast iron and with special spheroidal graphite cast-iron (SG1).

The thickness of each shell for example is that 9mm and its length are 500mm, and assembled shell is determined an inner space near 80mm diameter cable.

In use, with reference to Fig. 2, a plurality of duct members are connected to get up around cable 21 is assembled dividually then, and each duct member locks duct member in front.The spherical node that is formed by the external boundary of the inner boundary of head 2 and in succession head 3 pins duct member in front and provides hinge to be connected to the duct member that is connected.

If during after the laying, a duct member damages, available bolt hole 16 is in the same place with the bolted-on in 17.

Best, cable clip, as shown in Figure 3, clamp on the cable length a bit, begin to be being provided in succession one " anchor " from that duct member by interface components.Cable clip comprises two and half folder C and D, and each comprises that two opposed hemispherical shape parts 23 and 24,23 are connected by straight mid portion 25 with 24 among C and the D.When two and half folder C and D are bolted in a time-out around the cable (not shown), forms a duct member, the internal diameter of being scheduled to of parts makes it can clamp cable.At each end of cable clip, hemisphere portion 23 and 24 form one by brachymemma spherical part.First duct member of duct member cascade can be assembled around the spherical part of the cable clip of brachymemma, and cascade that anchor is tight like this prevents that cascade from moving along cable length.Preferably cable clip is made by SGI.

If one or more duct members of cascade have damaged or cascade is interrupted, the jockey shown in Fig. 4 can be used for linking the middle broken ends of fractured bone of cascade.

This jockey comprises two and half device E and F, EF have two

semi-circular cross-section end

26 and 27 and diameter greater than the mid portion 28 of the semi-circular cross-section of end diameter.When assembling around the duct member of two interruptions, the end of jockey forms the collar and clamps the mid portion 1 of connected tube, has therefore pinned each limit in cascade joint.

To each characteristic narration of the present invention the time, be understood that equivalent can be substituted easily and do not depart from scope of the present invention.

Claims

1. the protection tube parts that are used for one section extension of mechanical means protection; described duct member comprises first shell parts and second shell parts; each shell parts comprises the mid portion of the halfpipe cross section of prolongation; this mid portion ends at the first end section and second end section respectively at every end; each end parts is the hollow hemisphere shape of brachymemma; it is characterized in that: the first end section of described each shell parts comprises a jockey that can pivot; be used for pivoting mutually engagement; so that tight first shell parts of clamping and second shell parts; form a pipe; this pipe at one end has the first hollow ball-shape part of opening; at the other end the second hollow ball part of opening, this effective described cable that passes therethrough extension with one section of packing are arranged.

2. protection tube parts described in claim 1; it is characterized in that: the described pivoted jockey that is included on each first end section comprises; the minor axis of a pair of isolated outwardly directed conllinear on the first end section; their common axis line is transverse to described duct member; in another first end section a pair of isolated hook that stretches out is backward arranged, the plane at each hook place is perpendicular to the common axis line of described minor axis.

3. protection tube parts described in claim 2 is characterized in that: the lateral parts of each described minor axis is cut forms flat surface, and becomes predetermined angular with the longitudinal axis of described duct member.

4. protection tube parts described in the claim 1-3 arbitrary is characterized in that: comprise the device that the second shell member that is used to keep the described first shell member is aimed at when constituting duct member.

5. as at the protection tube parts described in the claim 4; it is characterized in that: the described device that is used for keeping aiming at when described duct member constitutes comprises that stretch out from a shell parts and be positioned and an arrange pin at least; when described duct member was shaped, pin was inserted in the cooperation socket on another shell parts.

6. the protection tube parts described in claim 5 is characterized in that comprising at least at least one web part, and it connects the first end section and the relative mid portion of described each shell.

7. protection tube parts described in claim 6; it is characterized in that stretching out on described at least one pin described at least one web, and the described socket that matches is positioned at least one web of described another shell parts by described at least one shell parts.

8. the protection tube parts described in claim 6 or 7 is characterized in that the web part of a described shell parts comprises that at least a through hole is to admit fastening bolt.

9. protection tube parts described in claim 1 or 2, it is characterized in that: it is made by cast iron.

10. protection tube parts described in claim 1 or 2, it is characterized in that: it is made by spheroidal graphite cast-iron.

11. protection tube parts described in claim 2 is characterized in that: described cable is a submarine cable.

12. comprise the duct member device with the joint connection of a plurality of duct members described in claim 1 or 2, it is characterized in that: one section described cable of an assembled packing of initial duct member, what continue is the duct member of follow-up assembling, outer surface by second hollow ball part of the inner surface of described first hollow ball part of a duct member and next duct member has formed spherical joint whereby, thereby the hinge of finishing a plurality of duct members is connected continuously.

13. as at the duct member device described in the claim 12 with the joint connection, it is characterized in that: comprise the cable tightening device, described cable is fixed on a bit, described immediately a plurality of duct members are switch therefrom, described cable tightening device comprises ball type device, works in coordination with the inner surface of the hollow ball part of first duct member of an articulated manner and cascade.

14. the duct member with the joint connection described in claim 12 or 13 is installed, it is characterized in that: comprise that a jockey is in order to connect the two ends of the duct member cascade of interrupting, described jockey comprise the shell that is configured in order to packing because the cable section that the duct member interruption of described cascade exposes, be used for the fastening described shell and the duct member of approaching described interrupting portion with fastener, thereby pin described duct member.

15. the duct member with the joint connection described in claim 13 is installed, it is characterized in that: described duct member is made by cast iron.

16. the duct member with the joint connection described in claim 13 is installed, it is characterized in that: described duct member is made by spheroidal graphite cast-iron.

17. the duct member with the joint connection described in claim 13 is installed, and it is characterized in that: each described protection tube parts comprises the device that is used to keep described first shell member and second shell member aligning when described duct member is shaped.