Combined wire traction device

Abstract

The invention provides a combined type wire traction device. The combined type wire traction device comprises a crimping type traction tube and a traction tube protection structure which are both of a tubular structure. The crimping type traction tube is provided with a fixing part used for connecting the end part of a wire; the traction tube protection structure is arranged outside the compression joint type traction tube in a sleeving manner; the traction tube protection structure is made of a hard material. According to the device disclosed by the invention, the crimping type traction tube is used for fixing the end part of the wire, and the traction tube protection structure is used for protecting the crimping type traction tube and the wire in the crimping type traction tube, so that hidden dangers such as wire breakage and the like caused by repeated bending of the crimping type traction tube when the crimping type traction tube passes through a pulley are effectively prevented, and the coverage of the cross section of the wire in an ultra-high-voltage line is fully considered; and safe unfolding of the extra-high voltage line lead is realized.

Description

Technical Field

[0001] The invention relates to the technical field of electric power construction, and in particular to a combined conductor traction device. Background Art

[0002] With the large-scale construction and commissioning of power grids, UHV transmission and transformation lines are entering a large-scale construction period. For UHV DC lines, multi-split large-section conductors are used. Especially in the construction of UHV lines, multi-split small-section conductors are used for UHV AC lines. With the increase in the cross-section of UHV line conductors, the number of conductor splits, and the length of conductor laying segments, there are great safety hazards in the laying of conductors. The existing conductor traction methods include assembled tractors and mesh connectors. Because there are hidden dangers such as broken wires, broken wires, and fallen wires during the laying of conductors, assembled conductor tractors are currently banned in UHV line projects, and mesh connectors are required to be banned in important crossings of UHV lines. Summary of the invention

[0003] In order to solve the problems of wire breakage, wire breakage, wire drop and other hidden dangers in the existing wire deployment process, the present invention provides a combined wire pulling device, including: a crimping type pulling tube and a pulling tube protection structure, both of which are tubular structures;

[0004] The crimping type traction tube has a fixing portion for connecting the end of the wire;

[0005] The traction tube protection structure is sleeved on the outside of the crimped traction tube;

[0006] The traction tube protection structure is made of hard material.

[0007] Preferably, the crimped traction tube comprises an anchor body and a tube body;

[0008] One end of the anchor body is inserted into the tube body and fixedly connected to the tube body;

[0009] The fixing portion is located at the end of the anchor body passing through the tube body.

[0010] Preferably, an annular head for connecting to an external structure is provided at the end of the anchor body away from the tube body.

[0011] Preferably, the traction tube protection structure includes a hard protection tube and a protection joint in an annular structure;

[0012] The protection joint is installed at one end of the hard protection tube;

[0013] The tube body penetrates into the hard protective tube from the end where the protective joint is located;

[0014] Part of the anchor body penetrates into the hard protection tube, and the protection section is buckled on the hard protection tube.

[0015] Preferably, the traction tube protection structure further includes an insulating head of an annular structure;

[0016] The insulating head is detachably connected to a side of the hard protective tube away from the protective joint.

[0017] Preferably, the insulating head is made of flexible material.

[0018] Preferably, the traction tube protection structure further includes a connecting section of an annular structure;

[0019] The connecting joint is fixedly connected to the hard protective tube;

[0020] The connection joint is squeezed between the hard protection tube and the insulating head.

[0021] Preferably, the traction tube protection structure further comprises a snake-shaped connector of an annular structure;

[0022] Two ends of the snake-shaped connector are respectively connected to the connecting joint and the insulating head.

[0023] Preferably, a rubber gasket is provided in the hard protective tube;

[0024] The rubber gasket is sleeved on the wire.

[0025] Preferably, the traction tube protection structure is a double semi-annular buckle structure.

[0026] Preferably, it also includes a rotary connector;

[0027] The rotary connector is rotatably connected to the end of the crimping type traction tube.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] The present invention provides a combined conductor traction device, comprising: a crimped traction tube and a traction tube protection structure, both of which are tubular structures; the crimped traction tube has a fixing portion for connecting the end of the conductor; the traction tube protection structure is sleeved on the outside of the crimped traction tube; the traction tube protection structure is made of a hard material. The device of the present invention effectively prevents the crimped traction tube from repeatedly bending when passing over a pulley, thereby causing hidden dangers such as wire breakage and wire breakage, by fixing the end of the conductor with the crimped traction tube and protecting the crimped traction tube and the wire inside it with the traction tube protection structure. It fully considers the cross-sectional coverage of the conductor in the UHV line and realizes the safe deployment of the conductor in the UHV line. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of the combined wire pulling device of the present invention;

[0031] Figure 2 It is a schematic diagram of the structure of the conductor of the present invention;

[0032] Figure 3 It is a schematic diagram of the structure of the crimped traction tube of the present invention when it is not assembled;

[0033] Figure 4 This is a schematic diagram of the structure of the crimped traction tube of the present invention after it is assembled;

[0034] Figure 5 It is a schematic structural diagram of a traction tube protection structure from a first viewing angle according to Embodiment 1 of the present invention;

[0035] Figure 6 It is a schematic structural diagram of the traction tube protection structure from a second viewing angle according to Embodiment 1 of the present invention;

[0036] Figure 7 It is a structural schematic diagram of a traction tube protection structure according to Embodiment 2 of the present invention;

[0037] Figure 8 It is a schematic diagram of the snake-shaped connector of the present invention in use.

[0038] Among them, 1. conductor; 11. aluminum stranded wire; 12. steel core; 2. traction tube protection structure; 21. insulating head; 22. connecting joint; 23. hard protective tube; 24. protective joint; 25. fastening screw; 26. quick-release hose clamp; 27. snake-type connector; 28. rubber gasket; 3. crimped traction tube; 31. anchor body; 32. tube body; 4. rotary connector. DETAILED DESCRIPTION

[0039] In order to better understand the present invention, the content of the present invention is further described below in conjunction with the accompanying drawings and examples.

[0040] The present invention provides a combined conductor traction device, which fixes the conductor end with a crimped traction tube and protects the crimped traction tube and the conductor inside it with a traction tube protection structure, thereby effectively preventing the crimped traction tube from being repeatedly bent when passing over a pulley, thereby causing hidden dangers such as conductor breakage and wire breakage. The cross-sectional coverage of the conductors in the UHV line is fully considered, and the safe deployment of the conductors in the UHV line is achieved.

[0041] Embodiment 1:

[0042] A combined wire pulling device, such as Figure 1As shown, it includes: a crimped traction tube 3 and a traction tube protection structure 2, both of which are tubular structures; the crimped traction tube 3 has a fixing portion for connecting the end of the wire 1; the traction tube protection structure 2 is sleeved on the outside of the crimped traction tube 3; the traction tube protection structure 2 is made of hard material.

[0043] The crimped traction tube 3 includes an anchor body 31 and a tube body 32; one end of the anchor body 31 is inserted into the tube body 32 and fixedly connected to the tube body 32; the fixing portion is located at the end of the anchor body 31 inserted into the tube body 32. The end of the anchor body 31 away from the tube body 32 is provided with a ring head for connecting to an external structure.

[0044] In this embodiment, Figure 2 As shown, before the wire 1 is connected to the crimped traction tube 3, the wire 1 needs to be stripped, the required stripping length is measured and marked on the outer circle of the wire 1, and the aluminum stranded wire 11 of the wire 1 outside the steel core 12 of the wire 1 is stripped using tools such as pliers to expose the steel core 12 of the wire 1 of the required size.

[0045] like Figure 3 and Figure 4 As shown, firstly, the tube body 32 is inserted into the conductor 1, and then the steel core 12 is inserted into the anchor body 31. The steel core 12 supports the anchor body 31, and a certain gap is left between the aluminum stranded wire 11 and the bottom end of the anchor body 31 to prevent the anchor body 31 from hitting the aluminum stranded wire 11 and causing the aluminum stranded wire 11 to be scattered when the anchor body 31 and the steel core 12 are crimped. Then the anchor body 31 is crimped: crimping from the side of the anchor body 31 to the side of the tube body 32, and the pressing die crimps the entire anchor body 31 to the steel core 12 of the conductor 1. Then, one end of the tube body 32 is flush with the anchor body 31, and according to the parameters of the conductor 1 and the actual construction needs, the position where the anchor body 31 is not crimped is determined and marked on the tube body 32, and the anchor body 31 and the tube body 32 are crimped using a hydraulic crimping machine, and then the other end of the tube body 32 is crimped with the aluminum stranded wire 11 of the conductor 1. At this time, the crimping connection between the crimped traction tube 3 and the conductor 1 is completed. In this embodiment, the anchor body 31 is a steel anchor, and the tube body 32 is an aluminum tube.

[0046] like Figure 5 and Figure 6As shown, the traction tube protection structure 2 includes a hard protection tube 23 and a protection joint 24 of an annular structure; the protection joint 24 is installed at one end of the hard protection tube 23; the tube body 32 penetrates into the hard protection tube 23 from the end where the protection joint 24 is located; part of the anchor body 31 penetrates into the hard protection tube 23, and the protection joint 24 is buckled on the hard protection tube 23. The traction tube protection structure 2 also includes an insulating head 21 of an annular structure; the insulating head 21 is detachably connected to the side of the hard protection tube 23 away from the protection joint 24. The insulating head 21 is a flexible material. In this embodiment, the insulating head 21 is made of rubber material. The traction tube protection structure 2 also includes a connecting joint 22 of an annular structure; the connecting joint 22 is fixedly connected to the hard protection tube 23; the connecting joint 22 is squeezed between the hard protection tube 23 and the insulating head 21. The traction tube protection structure 2 is a double semi-annular buckle structure. In this embodiment, the hard protection tube 23, the protection joint 24 and the connecting joint 22 are all made of steel.

[0047] In this embodiment, the insulating head 21 is formed by splicing two semicircular insulating heads 21, the connecting section 22 includes a semicircular upper connecting section 22 and a lower connecting section 22, the hard protective tube 23 includes a semicircular upper hard protective tube 23 and a lower hard protective tube 23, the protective section 24 includes a semicircular upper protective section 24 and a lower protective section 24, and the traction tube protection structure 2 also includes a fastening screw 25 and a ring-shaped and elastic quick-release throat clamp 26; the hard protective tube 23 is cut in half along its axis into two semicircular sections. The upper hard protective tube 23 has an upper connection joint 22 and an upper protective joint 24 welded at both ends, and the upper connection joint 22 and the upper protective joint 24 are respectively processed with concave-convex groove snap-in on the planes on both sides thereof; the lower connection joint 22 and the lower protective joint 24 are welded at both ends of the lower hard protective tube 23, and the lower connection joint 22 and the lower protective joint 24 are also respectively processed with concave-convex groove snap-in on the planes on both sides thereof; the concave-convex groove snap-in on the lower connection joint 22 and the lower protective joint 24 is opposite to the concave-convex groove snap-in on the upper connection joint 22 and the upper protective joint 24, so as to realize the snap-in limit and docking of the combined tube type. Before installation, the upper hard protective tube 23, the upper connection joint 22 and the upper protective joint 24 are laid flat with the opening facing upward, half of the insulating head 21 is placed into the limit slot of the upper connection joint 22, and then the crimped traction tube 3 connected with the wire 1 is placed into the inner cavity of the upper hard protective tube 23. The other half of the insulating head 21 is placed into the limiting slot of the lower connecting joint 22, and the lower hard protective tube 23, the lower connecting joint 22 and the lower protective joint 24 are laid flat and connected through the concave-convex groove snap-on to achieve docking with the upper hard protective tube 23, the upper connecting joint 22 and the upper protective joint 24 that have been laid flat. At this time, the crimped traction tube 3 is located inside the traction tube protection structure 2, and the connecting joint 22, the protective joint 24 and the insulating head 21 are bound and fixed by the fastening screws 25 and the quick-release throat clamp 26 to achieve protection for the crimped traction tube 3 and the wire 1 when passing the pulley. The wire 1 traction device also includes a rotary connector 4; the rotary connector 4 is rotatably connected to the end of the crimped traction tube 3. After the traction tube protection structure 2 is installed, the annular head of the crimped traction tube 3 is connected to the rotary connector 4 to achieve the connection between the wire 1 and the traction plate.

[0048] Embodiment 2:

[0049] The difference from Example 1 is that Figure 7 and Figure 8 As shown, if the cross-sectional size of the conductor 1 is relatively large, the traction tube protection structure 2 of this embodiment further includes a snake-shaped connector 27 of an annular structure; both ends of the snake-shaped connector 27 are respectively connected to the connection section 22 and the insulating head 21 .

[0050] The serpentine connector 27 includes: an upper serpentine connector 27 and a lower serpentine connector 27 which are semicircular in shape as a whole. When the wire diameter of the large-section conductor 1 is thicker and the crimping length is longer, the crimped traction tube 3 is larger in size. The crimped traction tube 3 is subjected to greater force and more contact when passing over the pulley. In order to better protect the crimped traction tube 3, multiple upper serpentine connectors 27 and lower serpentine connectors 27 are connected behind the upper connecting section 22 and the lower connecting section 22. The upper serpentine connector 27 and the lower serpentine connector 27 are universally bent and limited by interlocking connecting buckles, turning the subsequent steel pipe into a universal serpentine tube, effectively protecting the conductor 1.

[0051] In order to better limit the position of the crimped traction tube 3, a rubber gasket 28 is provided in the hard protective tube 23, and the rubber gasket 28 is sleeved on the conductor 1. In this embodiment, two semicircular rubber gaskets 28 are used for easy installation.

[0052] Obviously, the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0053] The above are merely embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention are included in the scope of the claims of the present invention to be approved.

Claims

1. A combined wire pulling device, characterized in that: include: A crimped traction tube (3) and a traction tube protection structure (2), both of which are tubular structures; The crimping type traction tube (3) has a fixing portion for connecting the end of the wire (1); The traction tube protection structure (2) is sleeved on the outside of the crimped traction tube (3); The traction tube protection structure (2) is made of a hard material.

2. A combined wire pulling device according to claim 1, characterized in that: The crimped traction tube (3) comprises an anchor body (31) and a tube body (32); One end of the anchor body (31) is inserted into the tube body (32) and is fixedly connected to the tube body (32); The fixing portion is located at the end of the anchor body (31) passing through the tube body (32).

3. A combined wire pulling device according to claim 2, characterized in that: An annular head is provided at the end of the anchor body (31) away from the tube body (32).

4. A combined wire pulling device according to claim 2, characterized in that: The traction tube protection structure (2) comprises a hard protection tube (23) and a protection joint (24) in an annular structure; The protection joint (24) is installed at one end of the hard protection tube (23); The tube body (32) penetrates into the hard protective tube (23) from the end where the protective joint (24) is located; Part of the anchor body (31) penetrates into the hard protective tube (23), and the protective joint (24) is buckled on the hard protective tube (23).

5. A combined wire pulling device according to claim 4, characterized in that: The traction tube protection structure (2) also includes an insulating head (21) of an annular structure; The insulating head (21) is detachably connected to a side of the hard protective tube (23) away from the protective joint (24).

6. A combined wire pulling device according to claim 5, characterized in that: The insulating head (21) is made of flexible material.

7. A combined wire pulling device according to claim 5, characterized in that: The traction tube protection structure (2) also includes a connecting section (22) of an annular structure; The connection joint (22) is fixedly connected to the hard protective tube (23); The connection joint (22) is squeezed between the hard protective tube (23) and the insulating head (21).

8. A combined wire pulling device according to claim 7, characterized in that: The traction tube protection structure (2) also includes a snake-shaped connector (27) of an annular structure; The two ends of the snake-shaped connector (27) are respectively connected to the connecting joint (22) and the insulating head (21).

9. A combined wire pulling device according to claim 4, characterized in that: A rubber gasket (28) is arranged inside the hard protective tube (23); The rubber gasket (28) is sleeved on the wire (1).

10. A combined wire pulling device according to any one of claims 4 to 9, characterized in that: The traction tube protection structure (2) is a double semi-annular buckle connection structure.

11. A combined wire pulling device according to claim 1, characterized in that: Also includes a rotary connector (4); The rotary connector (4) is rotatably connected to the end of the crimped traction tube (3).

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