CN220172736U - Waterproof traction device for high-voltage crosslinked cable - Google Patents
Waterproof traction device for high-voltage crosslinked cable Download PDFInfo
- Publication number
- CN220172736U CN220172736U CN202321603602.7U CN202321603602U CN220172736U CN 220172736 U CN220172736 U CN 220172736U CN 202321603602 U CN202321603602 U CN 202321603602U CN 220172736 U CN220172736 U CN 220172736U
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- cable
- sealing
- tightening
- sealing rubber
- traction
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- 238000007789 sealing Methods 0.000 claims abstract description 78
- 238000001125 extrusion Methods 0.000 claims abstract description 25
- 230000006835 compression Effects 0.000 claims abstract description 19
- 238000007906 compression Methods 0.000 claims abstract description 19
- 239000004020 conductor Substances 0.000 claims description 18
- 239000003292 glue Substances 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims description 3
- 238000005253 cladding Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 229920003020 cross-linked polyethylene Polymers 0.000 description 2
- 239000004703 cross-linked polyethylene Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000005491 wire drawing Methods 0.000 description 2
- 241000242583 Scyphozoa Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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- Cable Accessories (AREA)
Abstract
The utility model belongs to the technical field of cable laying, and particularly relates to a waterproof traction device for a high-voltage crosslinked cable, wherein a traction head comprises a traction inner cylinder and a tightening outer cylinder, the rear part of the traction inner cylinder is a cylindrical tightening part which is a collapsible cage structure formed by enclosing a plurality of circular arc keel rib plates, and the front ends of all keel rib plates are coaxially fixedly connected with a sealing plug; tightening the conical tube shape at the front part of the outer cylinder, the cylindrical tube shape at the rear end, and arranging annular conical surfaces at the inner sides of the front part and the rear part of the outer cylinder; the periphery of the sealing plug is provided with an annular base, and the tightening outer cylinder is elastically connected with the annular base through a plurality of compression springs distributed in an annular manner; the rib plates of each keel are coated with sealing rubber blocks, the outer sides of the sealing rubber blocks are provided with wedge-shaped surfaces matched with the annular conical surfaces, and the inner sides of the sealing rubber blocks are provided with sealing lips; when dragging the cable, establish the traction head cover on the cable head, can form reliable extrusion to the cable head and tighten, prevent that the cable head from deviate from, have fine water-proof effects to the cable head simultaneously, effectively prevent that the cable from intaking.
Description
Technical Field
The utility model belongs to the technical field of cable laying, and particularly relates to a waterproof traction device for a high-voltage crosslinked cable.
Background
The crosslinked cable is short for crosslinked polyethylene insulated cable, because the insulating property of crosslinked polyethylene material is good, so the majority of the existing high-voltage cable is crosslinked cable, the diameter of the high-voltage crosslinked cable is generally thicker, the cable weight is also very large, and the underground laying mode is generally adopted. The high-voltage crosslinked cable laying construction uses a traction machine to drag the cable head to advance, a specific traction head device is needed to firmly tighten the cable head during cable laying, the traditional traction head device adopts a wire-drawing net sleeve woven by a steel wire rope, the cable head is automatically tightened by utilizing friction force generated by the dragging pressure of the net sleeve, and the defect is that the wire-drawing net sleeve is easily broken or the outer sheath of the cable head is easily broken when the traction force is large. In addition, the wire mesh sleeve does not have a waterproof function, and the high-voltage crosslinked cable is laid, so that the cable head cannot enter water, and the traction head needs to have enough mechanical structural strength and reliable sealing waterproof performance. However, the existing cable head traction device has the problem that the tightening effect is unreliable, so that the cable head is separated in the dragging process to cause cable dragging failure, and the cable laying construction efficiency is affected; on the other hand, the problem of unreliable waterproof effect exists, and the cable head water inflow and the cable inner conductor are affected with damp, can cause serious potential safety hazard for the follow-up power-on operation of the high-voltage cable.
Disclosure of Invention
Aiming at the situation, the utility model designs the waterproof traction device for the high-voltage crosslinked cable, which is sleeved on the cable head when the cable is dragged, so that reliable extrusion and tightening can be formed on the cable head, the cable head is prevented from falling out, and meanwhile, the waterproof traction device has a good waterproof effect on the cable head, and the cable is effectively prevented from water inflow.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the utility model provides a waterproof draw gear of high pressure crosslinked cable, includes cable head and traction head, and the cable head includes conductor and sheath, and the coaxial cladding of sheath is in the conductor outside, the traction head is including dragging the inner tube and tightening up the urceolus, tightens up the coaxial movable sleeve of urceolus and establishes in dragging the inner tube outside, and the main effect of dragging the inner tube is to tighten up the cable head, tightens up the main effect of urceolus and tightens up and drag the inner tube.
According to the advancing direction of the cable head, the front part of the dragging inner cylinder is a conical first tightening part, the rear end of the first tightening part is coaxially fixedly connected with a cylindrical second tightening part, the first tightening part and the second tightening part are all of expandable cage-shaped structures formed by annularly enclosing a plurality of circular arc-shaped keel rib plates, the front end of the dragging inner cylinder is coaxially fixedly connected with a sealing plug, and the front ends of the keel rib plates of the first tightening part are integrally fixedly connected with the sealing plug; the front part of the tightening outer cylinder is a conical tubular first extrusion part, the rear end of the first extrusion part is coaxially and fixedly connected with a cylindrical tubular second extrusion part, and the inner sides of the rear ends of the first extrusion part and the second extrusion part are respectively provided with a first annular conical surface and a second annular conical surface.
The outer periphery of the sealing plug is fixedly provided with an annular base, the front end of the first extrusion part is elastically connected with the annular base through a plurality of compression springs which are annularly distributed, and the main function of the compression springs is to connect the dragging inner cylinder with the tightening outer cylinder on one hand and push the tightening outer cylinder backwards on the other hand; the outer sides of the keel rib plates of the first tightening part and the second tightening part are correspondingly coated with a first sealing rubber block and a second sealing rubber block in the shape of circular arcs, when the keel rib plates are tightened in the direction of the middle cable, the first sealing rubber block and the second sealing rubber block are respectively tightened in the middle to form a complete circular sealing ring, water inflow in the inner barrel is prevented from being dragged, wedge-shaped surfaces matched with a first annular conical surface and a second annular conical surface are correspondingly arranged on the outer sides of the first sealing rubber block and the second sealing rubber block, the first annular conical surface is used for wedging and extruding the first sealing rubber block, the second annular conical surface is used for wedging and extruding the second sealing rubber block, and a sealing lip is integrally and fixedly arranged on the inner sides of the front ends of the first sealing rubber blocks; when the cable is pulled, the front end of the conductor of the cable head is arranged in the middle of the first sealing glue blocks, the sheath of the cable head is arranged in the middle of the second sealing glue blocks, and the sealing lips of the first sealing glue blocks are tightened towards the middle to form a sealed seal to the front end of the conductor, so that the first sealing glue blocks form a cup-shaped package to the conductor of the cable head, and the conductor is prevented from being wet due to water seepage.
Further, the front end of the sealing plug is coaxially provided with a traction rod, the rear end of the traction rod is rotatably connected with the sealing plug through a spherical hinge structure, the front end of the traction rod is fixedly connected with a traction ring, the traction ring is used for being connected with a steel wire rope of a front tractor, and the spherical hinge structure is convenient for adjusting the angle of the traction rod.
Further, the first extrusion part and the annular base are fixedly provided with guide bosses used for positioning two ends of the compression spring in a matched mode, the guide bosses play a role in guiding the compression spring and fixing two ends of the compression spring, and the outer side of each compression spring is also provided with a telescopic flexible protective cover in a matched mode to prevent sediment sundries from being clamped in the middle of the compression spring.
Further, each keel rib plate is fixedly provided with a positioning boss for preventing the first sealing rubber block and the second sealing rubber block from slipping in a matched mode, the first sealing rubber block and the second sealing rubber block are made of rubber materials, and the sealing rubber blocks are firmly coated on the outer sides of the positioning bosses.
The utility model also includes other components which can be used normally, which are conventional means in the art, and in addition, the devices or components which are not limited in the utility model, such as compression springs, flexible shields, ball hinge structures, etc., all adopt the prior art in the field.
The beneficial effects of the utility model are as follows:
the waterproof traction device for the high-voltage crosslinked cable, provided by the utility model, has the advantages that the structure is simple, the operation is convenient, the waterproof traction device is sleeved on the cable head when the cable is dragged, reliable extrusion and tightening can be formed on the cable head, the cable head is prevented from falling off, the cable laying efficiency is improved, meanwhile, the waterproof effect on the cable head is good, the water inlet of the cable is effectively prevented, and the operation potential safety hazard of the high-voltage cable is reduced.
Drawings
Fig. 1 is a schematic structural view of a waterproof traction device for a high-voltage crosslinked cable in an embodiment.
Fig. 2 is a schematic cross-sectional view taken along line A-A in fig. 1.
Detailed Description
The technical solutions of the present utility model will be clearly and completely described below in connection with specific embodiments, and it is obvious that the described embodiments are only some embodiments of the present utility model, not all embodiments.
It should be noted that, the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "inner", "outer", etc. are shown based on the drawings, and are merely for convenience of description.
Examples
As shown in fig. 1-2, the waterproof traction device of the high-voltage crosslinked cable comprises a cable head and a traction head, wherein the cable head comprises a conductor 1 and a sheath 2, the sheath is coaxially coated on the outer side of the conductor, the traction head comprises a dragging inner cylinder and a tightening outer cylinder, and the tightening outer cylinder is coaxially and movably sleeved on the outer side of the dragging inner cylinder.
When the cable is dragged, the sheath part outside the front end of the cable head is subjected to circular cutting stripping, so that the inner conductor is exposed to one section, then the cable head is inserted into the middle of the dragging inner cylinder, the tightening outer cylinder mainly acts as a backward extrusion tightening dragging inner cylinder, the tightening outer cylinder has a backward trend under the thrust action of the compression spring on one hand, and has a backward trend under the action of external resistance such as the ground hole sediment friction force on the other hand.
According to the advancing direction of the cable head, the front part of the dragging inner cylinder is a conical first tightening part 3, the rear end of the first tightening part is coaxially and fixedly connected with a cylindrical second tightening part 4, the first tightening part and the second tightening part are all of expandable cage-shaped structures formed by annularly enclosing a plurality of circular arc-shaped keel rib plates 5, the front end of the dragging inner cylinder is coaxially and fixedly connected with a sealing plug 6, and the front ends of the keel rib plates of the first tightening part are integrally and fixedly connected with the sealing plug, namely the whole dragging inner cylinder is approximately similar to the shape of jellyfish; the front part of the tightening outer cylinder is a conical tubular first extrusion part 7, the rear end of the first extrusion part is coaxially and fixedly connected with a cylindrical tubular second extrusion part 8, and the inner sides of the rear ends of the first extrusion part and the second extrusion part are respectively provided with a first annular conical surface 9 and a second annular conical surface 10.
The periphery of the sealing plug is fixedly provided with an annular base 11, and the front end of the first extrusion part is elastically connected with the annular base through a plurality of compression springs 12 distributed in an annular manner; the outer sides of the keel rib plates of the first tightening part and the second tightening part are correspondingly coated with a first sealing rubber block 13 and a second sealing rubber block 14 which are in the shape of circular arcs, when the keel rib plates are tightened in the direction of the middle cable, the first sealing rubber block and the second sealing rubber block are respectively tightened in the middle to form a complete circular sealing ring, water inflow in the inner cylinder is prevented from being dragged, wedge-shaped surfaces 15 matched with the first circular conical surface and the second circular conical surface are correspondingly arranged on the outer sides of the first sealing rubber block and the second sealing rubber block, and sealing lips 16 are integrally and fixedly arranged on the inner sides of the front ends of the first sealing rubber blocks; when the cable is pulled, the front end of the conductor of the cable head is arranged in the middle of the first sealing glue blocks, the sheath of the cable head is arranged in the middle of the second sealing glue blocks, and the sealing lips of the first sealing glue blocks are tightened towards the middle to form a sealed seal to the front end of the conductor, so that the first sealing glue blocks form a cup-shaped package to the conductor of the cable head, and the conductor is prevented from being wet due to water seepage.
The front end of the sealing plug is coaxially provided with a traction rod 17, the rear end of the traction rod is rotatably connected with the sealing plug through a spherical hinge structure 18, and the front end of the traction rod is fixedly connected with a traction ring 19.
The first extrusion part and the annular base are fixedly provided with guide bosses 20 for positioning two ends of the compression spring in a matching way, the length of the compression spring is far greater than the added length of the guide bosses at two ends of the compression spring, the two guide bosses are prevented from being mutually abutted, a sufficient telescopic movable space is reserved between the compression springs, and a telescopic flexible protective cover is sleeved outside each compression spring in a matching way.
Each keel rib plate is fixedly provided with a positioning boss 21 for preventing the first sealing rubber block and the second sealing rubber block from slipping in a matched mode, the first sealing rubber block and the second sealing rubber block are made of rubber materials, the positioning boss is preferably fixedly connected with the keel rib plate in an integrated mode, the sealing rubber block is fixedly covered on the outer side of the positioning boss, protruding step parts exceeding the keel rib plate are arranged on the upper side and the lower side of the positioning boss, separation between the sealing rubber block and the keel rib plate is prevented, and the sealing rubber block slides back and forth on the keel rib plate.
The technical solution of the present utility model is not limited to the above-described specific embodiments, and many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments, and any technical modifications made within the spirit and principles of the present utility model fall within the scope of the present utility model.
Claims (4)
1. The utility model provides a waterproof draw gear of high pressure crosslinked cable, includes cable head and haulage head, and the cable head includes conductor and sheath, and the coaxial cladding of sheath is in the conductor outside, its characterized in that: the traction head comprises a dragging inner cylinder and a tightening outer cylinder, the tightening outer cylinder is coaxially and movably sleeved outside the dragging inner cylinder, the front part of the dragging inner cylinder is a conical first tightening part according to the advancing direction of the cable head, the rear end of the first tightening part is coaxially and fixedly connected with a cylindrical second tightening part, the first tightening part and the second tightening part are all of expandable cage-shaped structures formed by encircling a plurality of circular arc keel rib plates in an annular mode, the front end of the dragging inner cylinder is coaxially and fixedly connected with a sealing plug, and the front ends of the keel rib plates of the first tightening part are integrally and fixedly connected with the sealing plug; the front part of the tightening outer cylinder is a conical tubular first extrusion part, the rear end of the first extrusion part is coaxially and fixedly connected with a cylindrical tubular second extrusion part, and the inner sides of the rear ends of the first extrusion part and the second extrusion part are respectively provided with a first annular conical surface and a second annular conical surface; the periphery of the sealing plug is fixedly provided with an annular base, and the front end of the first extrusion part is elastically connected with the annular base through a plurality of compression springs distributed in an annular manner; the outer sides of the keel rib plates of the first tightening part and the second tightening part are correspondingly coated with a first sealing rubber block and a second sealing rubber block which are in circular arc shapes, wedge-shaped surfaces matched with the first annular conical surface and the second annular conical surface are correspondingly arranged on the outer sides of the first sealing rubber block and the second sealing rubber block, and sealing lips are integrally and fixedly arranged on the inner sides of the front ends of the first sealing rubber blocks; when the cable is pulled, the front end of the conductor of the cable head is arranged in the middle of the first sealing glue blocks, the sheath of the cable head is arranged in the middle of the second sealing glue blocks, and the sealing lips of the first sealing glue blocks are tightened towards the middle to form a sealed plug for the front end of the conductor.
2. The waterproof traction device for high-voltage crosslinked cables according to claim 1, wherein: the front end of the sealing plug is coaxially provided with a traction rod, the rear end of the traction rod is rotatably connected with the sealing plug through a spherical hinge structure, and the front end of the traction rod is fixedly connected with a traction ring.
3. The waterproof traction device for high-voltage crosslinked cables according to claim 1, wherein: the first extrusion part and the annular base are fixedly provided with guide bosses used for positioning two ends of the compression spring in a matched mode, and the outer side of each compression spring is also provided with a telescopic flexible protective cover in a matched mode.
4. The waterproof traction device for high-voltage crosslinked cables according to claim 1, wherein: and each keel rib plate is fixedly provided with a positioning boss for preventing the first sealing rubber block and the second sealing rubber block from slipping in a matched manner, and the first sealing rubber block and the second sealing rubber block are made of rubber materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321603602.7U CN220172736U (en) | 2023-06-21 | 2023-06-21 | Waterproof traction device for high-voltage crosslinked cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321603602.7U CN220172736U (en) | 2023-06-21 | 2023-06-21 | Waterproof traction device for high-voltage crosslinked cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220172736U true CN220172736U (en) | 2023-12-12 |
Family
ID=89062791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321603602.7U Active CN220172736U (en) | 2023-06-21 | 2023-06-21 | Waterproof traction device for high-voltage crosslinked cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220172736U (en) |
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2023
- 2023-06-21 CN CN202321603602.7U patent/CN220172736U/en active Active
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