CN212084682U

CN212084682U - Cable convenient to tractive

Info

Publication number: CN212084682U
Application number: CN202021230419.3U
Authority: CN
Inventors: 陈磊; 肖来友; 王小新
Original assignee: Shanghai Nanda Group Zhejiang Cable Co Ltd
Current assignee: Shanghai Nanda Group Co ltd
Priority date: 2020-06-29
Filing date: 2020-06-29
Publication date: 2020-12-04
Anticipated expiration: 2030-06-29

Abstract

The utility model relates to a cable convenient to tractive belongs to wire and cable's technical field, and it includes cable core and cladding outer skin of cable core, the skin is including the cladding inner sheath on the cable core, the cladding is provided with the armor on the inner sheath, the cladding is provided with the oversheath on the armor, the annular has been seted up to circumference on the oversheath, fixed mounting has the collar in the annular, install a plurality of tractive rings on the collar. This application has the effect of being convenient for carry out the tractive to the cable and lay.

Description

Cable convenient to tractive

Technical Field

The application relates to the field of wires and cables, in particular to a cable convenient to draw.

Background

The rail transit line has very strict standards for fire prevention, and most importantly, people, important equipment and materials are evacuated timely and rapidly when fire and fire happen, and meanwhile, fire extinguishing and disaster relief work is carried out. Therefore, extremely strict requirements are imposed on the use characteristics of the cable, the cable is ensured to have better combustion characteristics when a fire disaster occurs, and valuable time is won for protecting the life and property safety of people.

Chinese utility model patent with publication number CN202217523U discloses a high fire-retardant environmental protection flexible cable for rail transit, including insulation sheath, conductor and by the non-woven fabrics cladding that the halogen-free fire-retardant polyolefin that burns through bundling a class was made in the band that the conductor formed, the conductor is become the monospar by many TR type circle copper monofilament bundles, is formed by a plurality of monosis transposition again. The conductor is formed by stranding a plurality of TR type round copper single wires with the diameter of 0.3-0.45mm into one strand and then stranding the strands.

In view of the above-mentioned related art, the inventor believes that the cable is not easily connected to the pulling device when the cable is laid because the surface of the cable in the above-mentioned technical solution does not have any point of force, thereby making the pulling of the cable difficult.

SUMMERY OF THE UTILITY MODEL

In order to facilitate the laying and pulling of the cable, the application provides a cable which is convenient to pull.

The application provides a cable convenient to tractive adopts following technical scheme:

the utility model provides a cable convenient to tractive, includes cable core and cladding outer layer of cable core, outer including the cladding be in inner sheath on the cable core, the cladding is provided with the armor on the inner sheath, the cladding is provided with the oversheath on the armor, the annular has been seted up to circumference on the oversheath, fixed mounting has the collar in the annular, install a plurality of tractive rings on the collar.

Through adopting above-mentioned technical scheme, inner sheath and oversheath can form good protection to the cable core, and the armor not only can further provide the protection to the cable core, the mechanical properties of the whole root cable of improvement that can also be very big to reduce the possibility of cable damage when laying and drawing. The outer sheath is provided with the traction ring, so that the cable can be connected with the traction equipment through the traction ring, and the traction equipment can conveniently pull and lay the cable.

Preferably, the cable core includes that the multiunit is led electrical core and the hoist and mount core that the multiunit is used for improving cable strength, lead electrical core with hoist and mount core interval sets up, lead electrical core and include the copper conductor, every group the copper conductor all coats outward and is provided with the flame retardant coating, the outer cladding of flame retardant coating is provided with the insulating layer.

By adopting the technical scheme, the hoisting core is added into the cable core, so that the strength of the cable core can be effectively improved, and the possibility of damage to the cable core when the traction equipment pulls the cable is reduced.

Preferably, the hoisting core comprises a glass fiber rope, and a binding band is covered outside the glass fiber rope.

By adopting the technical scheme, the glass fiber rope has high strength and poor water absorption, so that the cable core strength is ensured, and the possibility of water absorption of the hoisting core is reduced.

Preferably, the cable core still includes many asbestos filler strips, and is many the asbestos filler strip is right electrically conductive core with the space of hoist and mount core is filled, the cable core still cladding outward is provided with the winding layer, the outer cladding of winding layer is provided with the inner sheath.

Through adopting above-mentioned technical scheme, the fire behavior of cable core can effectively be improved to the asbestos packing strip, and the winding layer of cladding outside the cable core then can tighten up the cable core in advance to make inside electrically conductive core, hoist and mount core and the preliminary location of asbestos packing strip.

Preferably, a copper strip shielding layer is further arranged between the winding layer and the inner sheath.

By adopting the technical scheme, the copper strip shielding layer can greatly enhance the anti-interference capability of the cable.

Preferably, the traction ring is further connected with a traction assembly, the traction assembly comprises a steel wire traction net which is slidably sleeved on the outer sheath, the steel wire traction net is connected with a lifting hook which is used for being connected with the traction ring, one end, far away from the lifting hook, of the steel wire traction net is fixedly provided with a net restraining ring which is used for tightening the steel wire traction net, and the net restraining ring is provided with a traction ring which is used for being connected with traction equipment.

Through adopting above-mentioned technical scheme, in order to make the cable atress comparatively even, be provided with a plurality of tractive rings, and traction equipment often can only be connected with a tractive ring. The additionally arranged pulling assembly is connected with the pulling ring through a plurality of lifting hooks, so that the pulling assembly is connected with the cable, and the pulling equipment is connected with the pulling ring, so that the pulling assembly is connected with the pulling equipment. And when the cable is pulled by the pulling equipment, the steel wire pulling net can be pulled to be tightened so as to form stable clamping on the cable.

Preferably, the lifting hook includes the connecting rod, the one end fixed mounting of connecting rod with the go-between that the steel wire tractive net links to each other, the other end of connecting rod then fixed mounting has curved coupler body, the coupler body wears to establish in the tractive intra-annular, still install on the lifting hook and be used for reducing the coupler body is followed the anticreep subassembly that deviates from in the tractive intra-annular.

Through adopting above-mentioned technical scheme, the coupler body is connected steel wire traction net with traction ring's cooperation, and the anticreep subassembly of extra setting then can reduce the coupler body and follow the possibility that pulls the intra-annular and deviate from to make the pulling subassembly be connected with the more stable formation of cable.

Preferably, the anticreep subassembly includes that sliding sleeve connects the installation is in anticreep piece on the connecting rod, it installs the anticreep ring to rotate on the anticreep piece, the coupler body is kept away from offer the confession on the lateral wall of connecting rod one end the anticreep groove that the anticreep ring sinks, the connecting rod is kept away from the one end of go-between still fixed mounting has the fixed block, the fixed block with between the anticreep piece cup joint on the connecting rod and install the anticreep spring, the one end of anticreep spring with the fixed block supports tightly, the other end of anticreep spring with the anticreep piece supports tightly.

Through adopting above-mentioned technical scheme, penetrating the coupler body in the tractive intra-annular after, promote the anticreep piece, the anticreep piece then promotes the compression of anticreep spring and takes place deformation, rotates the anticreep ring afterwards, makes the anticreep ring card go into the anticreep inslot. Then the anti-drop block is released, the anti-drop spring pushes the anti-drop block to slide along the connecting rod, and the anti-drop block pulls the anti-drop ring, so that the anti-drop ring is tightly propped against the anti-drop groove.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the outer sheath is provided with the plurality of traction rings, so that the traction equipment is conveniently connected with the cable, and the traction equipment is convenient to traction and lay the cable;

2. the hoisting core is added into the cable core, so that the strength of the cable core can be greatly improved, and the possibility of damage of the cable during traction and laying is reduced;

3. by additionally arranging the traction assembly, the traction equipment is further conveniently connected with the cable, and the possibility of uneven stress of the cable when the cable is dragged and laid is reduced;

4. through setting up anticreep subassembly, can reduce the possibility that tractive subassembly and cable break away from the connection.

Drawings

Figure 1 is a schematic structural view of a cable core and an outer layer of the present application.

Fig. 2 is a schematic view of the overall structure of the present application.

Fig. 3 is a schematic structural view of the pulling assembly of the present application.

Description of reference numerals: 1. a cable core; 21. a copper conductor; 22. a refractory layer; 23. an insulating layer; 31. a glass fiber rope; 32. binding bands; 4. asbestos filler strips; 5. a winding layer; 61. a copper strip shielding layer; 62. an inner sheath; 63. an armor layer; 64. an outer sheath; 65. a ring groove; 66. a mounting ring; 67. a traction ring; 71. drawing the net by steel wires; 72. a hook; 721. a connecting rod; 722. a connecting ring; 723. a hook body; 73. a wire-tying ring; 74. a traction ring; 81. a fixed block; 82. an anti-drop block; 83. an anti-drop spring; 84. the anti-drop ring; 85. and (4) an anti-drop groove.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses a cable convenient to pull. Referring to fig. 1 and 2, the cable comprises a cable core 1 and an outer layer coated outside the cable core 1. The cable core 1 comprises three groups of conductive cores and three groups of hoisting cores for improving the strength of the cable, wherein the three groups of conductive cores and the three groups of hoisting cores are circumferentially arranged and arranged at intervals.

The conductive core comprises a copper conductor 21, a mica tape fire-resistant layer 22 is coated outside the copper conductor 21, and a cross-linked polyethylene insulating layer 23 is coated outside the fire-resistant layer 22. The hoisting core comprises a glass fiber rope 31, and a binding band 32 is wrapped outside the glass fiber rope 31.

The cable core 1 further comprises a plurality of asbestos filler strips 4, and the asbestos filler strips 4 are used for filling gaps between the conductive core and the hoisting core. The cable core 1 is coated with a winding layer 5.

The outer layer comprises a copper strip shielding layer 61 coated outside the winding layer 5, an inner sheath 62 is coated outside the copper strip shielding layer 61, a steel wire armor layer 63 is coated outside the inner sheath 62, and an outer sheath 64 is coated outside the armor layer 63.

A plurality of ring grooves 65 are formed in the outer sheath 64 in the circumferential direction, the ring grooves 65 are arranged at equal intervals along the length direction of the outer sheath 64, mounting rings 66 are fixedly mounted in the ring grooves 65, and four pulling rings 67 are mounted on the peripheral side wall of the mounting rings 66 at equal intervals in the circumferential direction.

Referring to fig. 2 and 3, the pulling ring 67 is connected with a pulling assembly, the pulling assembly includes a steel wire pulling net 71 slidably sleeved on the outer sheath 64, and four hooks 72 for connecting with the pulling ring 67 are disposed on the steel wire pulling net 71. The hook 72 comprises a connecting rod 721, one end of the connecting rod 721 close to the wire pulling net 71 is fixedly provided with a connecting ring 722 connected with the wire pulling net 71, one end of the connecting rod 721 far away from the connecting ring 722 is integrally formed with an arc-shaped hook body 723, and the hook body 723 is arranged in the pulling ring 67 in a penetrating way so as to connect the hook 72 with the pulling ring 67.

The hook 72 is further provided with an anti-dropping assembly for reducing the possibility that the hook 723 is dropped out of the pulling ring 67, the anti-dropping assembly comprises a fixed block 81 fixedly installed on the connecting rod 721, and the fixed block 81 is located at one end of the connecting rod 721 far from the connecting ring 722. The connecting rod 721 is also provided with an anti-falling block 82 in a sliding manner, the connecting rod 721 between the anti-falling block 82 and the fixed block 81 is sleeved with an anti-falling spring 83, one end of the anti-falling spring 83 abuts against the fixed block 81, and the other end of the anti-falling spring 83 abuts against the anti-falling block 82. The anti-slip block 82 is hinged with an anti-slip ring 84, and the peripheral side wall of the hook 723 at the end far away from the connecting rod 721 is provided with an anti-slip groove 85 for the anti-slip ring 84 to sink into.

One end of the steel wire pulling net 71, which is far away from the hook 72, is fixedly provided with a net-binding ring 73 for tightening the steel wire pulling net 71, and the net-binding ring 73 is provided with a pulling ring 74 for connecting with a pulling device.

The implementation principle of the cable convenient to pull in the embodiment of the application is as follows:

when the cable needs to be pulled and laid, the steel wire pulling net 71 is sleeved on the cable, and the three hook bodies 723 are respectively hooked into one pulling ring 67, so that the pulling assembly and the cable are connected through the hook 72 and the pulling ring 67. After the hook 723 is inserted into the pulling ring 67, the anti-slip block 82 is pushed, the anti-slip block 82 pushes the anti-slip spring 83 to compress and deform, and then the anti-slip ring 84 is rotated to clip the anti-slip ring 84 into the anti-slip groove 85. Then, the anti-slip block 82 is released, the anti-slip spring 83 pushes the anti-slip block 82 to slide along the connecting rod 721, and the anti-slip block 82 pulls the anti-slip ring 84, so that the anti-slip ring 84 abuts against the anti-slip groove 85 to close the opening of the hook 723, thereby reducing the possibility that the hook 723 is pulled out from the pulling ring 67.

After the pulling assembly is connected to the cable, the pulling device is connected to the pulling loop 74 and then activated to pull the cable for deployment. When the cable is pulled by the traction equipment, the steel wire traction net is tightened and stably coats the outer sheath 64 of the cable, and the steel wire traction net can enable the outer sheath 64 to form micro deformation, so that large resistance is formed between the steel wire traction net and the outer sheath 64.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A cable for facilitating pulling, comprising: including cable core (1) and cladding be in outer layer of cable core (1), the skin is including the cladding inner sheath (62) on cable core (1), the cladding is provided with armor (63) on inner sheath (62), the cladding is provided with oversheath (64) on armor (63), annular (65) have been seted up to circumference on oversheath (64), annular (65) internal fixation installs collar (66), install a plurality of tractive rings (67) on collar (66).

2. A cable for facilitating pulling according to claim 1, wherein: the cable core (1) comprises a plurality of groups of conductive cores and a plurality of groups of hoisting cores for improving the strength of the cable, the conductive cores are arranged at intervals of the hoisting cores, each conductive core comprises a copper conductor (21), each group of copper conductors (21) are all coated with a flame retardant coating (22), and an insulating layer (23) is coated outside the flame retardant coating (22).

3. A cable for facilitating pulling according to claim 2, wherein: the hoisting core comprises a glass fiber rope (31), and a binding band (32) is covered outside the glass fiber rope (31).

4. A cable for facilitating pulling according to claim 3, wherein: the cable core (1) still includes many asbestos packing strips (4), and is many asbestos packing strips (4) are right electrically conductive core with the space of hoist and mount core is filled, cable core (1) outer cladding still is provided with winding layer (5), the outer cladding of winding layer (5) is provided with inner sheath (62).

5. A cable for facilitating pulling according to claim 4, wherein: and a copper strip shielding layer (61) is also arranged between the winding layer (5) and the inner sheath (62).

6. A cable for facilitating pulling according to any one of claims 1 to 5, wherein: the traction ring (67) is further connected with a traction assembly, the traction assembly comprises a steel wire traction net (71) which is slidably sleeved on the outer sheath (64), a lifting hook (72) which is used for being connected with the traction ring (67) is connected onto the steel wire traction net (71), one end, far away from the lifting hook (72), of the steel wire traction net (71) is fixedly provided with a net restraining ring (73) which is used for tightening the steel wire traction net (71), and the net restraining ring (73) is provided with a traction ring (74) which is used for being connected with traction equipment.

7. A cable for facilitating pulling according to claim 6, wherein: the lifting hook (72) comprises a connecting rod (721), one end of the connecting rod (721) is fixedly provided with a connecting ring (722) connected with the steel wire traction net (71), the other end of the connecting rod (721) is fixedly provided with an arc-shaped hook body (723), the hook body (723) penetrates through the traction ring (67), and the lifting hook (72) is further provided with an anti-falling component for reducing the hook body (723) to fall off from the traction ring (67).

8. A cable for facilitating pulling according to claim 7, wherein: anticreep subassembly includes that slip cup joint installs anticreep piece (82) on connecting rod (721), it installs anticreep ring (84) to rotate on anticreep piece (82), coupler body (723) are kept away from offer the confession on the lateral wall of connecting rod (721) one end anticreep groove (85) that anticreep ring (84) sink, connecting rod (721) are kept away from the one end of go-between (722) is fixed mounting still has fixed block (81), fixed block (81) with between anticreep piece (82) cup joint on connecting rod (721) and install anticreep spring (83), the one end of anticreep spring (83) with fixed block (81) support tightly, the other end of anticreep spring (83) with anticreep piece (82) support tightly.