CN108951421B - Waterproof device suitable for expansion with heat and contraction with cold of PE sheath outside inhaul cable - Google Patents
Waterproof device suitable for expansion with heat and contraction with cold of PE sheath outside inhaul cable Download PDFInfo
- Publication number
- CN108951421B CN108951421B CN201811002946.6A CN201811002946A CN108951421B CN 108951421 B CN108951421 B CN 108951421B CN 201811002946 A CN201811002946 A CN 201811002946A CN 108951421 B CN108951421 B CN 108951421B
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- waterproof
- sheath
- contraction
- expansion
- umbrella
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/16—Suspension cables; Cable clamps for suspension cables ; Pre- or post-stressed cables
-
- 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
Abstract
A waterproof device suitable for expansion and contraction of an outer PE sheath of a guy cable comprises a waterproof umbrella, a matched screw or bolt pair and a sliding inner lining body; the waterproof umbrella is in a left half type and a right half type, the joint is in a straight line, or in a tooth shape or in a fold line, and the two half type waterproof umbrellas are connected to form an umbrella-shaped waterproof object after being fixed by screws or bolts; the upper end of the waterproof umbrella is fastened and fixed on the outer PE sheath of the inhaul cable through a screw or a bolt pair, a sliding lining body made of a material with small sliding friction coefficient is arranged in a mounting groove III at the lower part of the waterproof umbrella and sleeved on the sealing cylinder, and the sliding lining body can freely slide on the sealing cylinder of the inhaul cable along with the expansion and contraction of the PE sheath, so that the waterproof umbrella driving the waterproof device can slide up and down along with the expansion and contraction of PE. The waterproof device can play a role in waterproof sealing at the transitional outlet of the front end of the anchorage device and the PE sheath of the inhaul cable, is simple to install and durable, and can ensure the service life of the cable body.
Description
Technical Field
The utility model relates to a front end waterproof device of a guy anchor, in particular to a waterproof sealing cover suitable for a transition connection part of a guy anchor sealing cylinder and a free cable body.
Background
The existing cable outer sheath is protected by adopting HDPE, the transitional connection part of the cable anchorage sealing cylinder and the free cable body is usually waterproof sealed by adopting a heat shrinkage sleeve or a heat shrinkage belt (see figure 10), the cable body is prevented from entering rainwater through the transitional connection part, the heat shrinkage sleeve or the heat shrinkage belt is fixed at the part, the technical requirement of expansion and contraction of the cable PE cannot be met, the cable of some bridges is connected to the box girder anchoring point by virtue of a pull rod due to the structural requirement, and the heat shrinkage sleeve is exposed on the bridge deck of the bridge; because of climate, PE of the cable receives the effort of expend with heat and contract with cold and stretches and slides in sealed section of thick bamboo department, and here pyrocondensation cover or pyrocondensation area receive the destruction under PE's the effort of stretching out and drawing back easily, causes cable body sealed inefficacy, leads to cable ground tackle to intake, accelerates the corruption of ground tackle, and pyrocondensation material is generally only 2mm thick, also receives the external damage of other factors easily on the bridge floor, again, the long-term exposure insolatedly of pyrocondensation material takes place the sclerosis, life also significantly reduces (see fig. 10).
The patent of the utility model with the publication number of CN203782569U, namely a stay cable beam end waterproof cap, discloses a stay cable beam end waterproof device, which can partially solve the problems, but has the following defects:
1. the device has a gap at the connecting end of the rope body, the sealing strip is filled for extrusion deformation and sealing, the sealing strip is filled at the lower end of the device, and the sealing strip is arranged on the embedded pipe in an extrusion mode, so that free sliding of thermal expansion and contraction of the rope body is prevented, internal stress exists in PE, PE is accelerated to age and crack when severe, the rope body is water-in, and the service life of a inhaul cable is shortened;
2. the large end of the waterproof cover of the device needs to be arranged on the embedded pipe in a sitting way, when the rope body PE expands with heat and contracts with cold, the movement of the PE can lead the small end of the waterproof cover to be invalid in sealing, and the movement of the waterproof cover can not be driven, so that the rope body can be filled with water;
3. the waterproof cover is installed and fixed on the cable body and at the outlet of the embedded pipe at the beam end by means of extrusion deformation of three sealing strips, and the PE of the cable body can be driven to move by the PE to move when the PE expands with heat and contracts with cold, so that the waterproof cover is separated from the embedded pipe to leak water and corrode an anchor.
Disclosure of Invention
The utility model aims at: the front end waterproof device of the cable anchor device exposed in the air, which is suitable for PE outer PE sheath expansion and contraction, is provided; the waterproof device can flexibly slide according to the sliding requirement of expansion and contraction of the inhaul cable PE, can play a waterproof role on the transitional outlet of the PE at the front end of the anchorage device, has the characteristics of simplicity in installation, durability, prolonged service life of a cable body and the like, overcomes the defects of the existing heat shrinkage sleeve, and fills the gap of the protection technology of the waterproof problem caused by expansion and contraction sliding of the inhaul cable PE.
The technical scheme for solving the problems is as follows: waterproof device suitable for expansion with heat and contraction with cold of outer PE sheath of cable, including waterproof umbrella, supporting screw or bolt pair, its characterized in that: the waterproof device suitable for expansion and contraction of the PE sheath outside the inhaul cable also comprises a sliding inner lining body;
the waterproof umbrella is in a left half type and a right half type, the joint is in a straight line, or in a tooth shape or in a fold line, and the two half type waterproof umbrellas are fastened and fixed through the mounting holes I and the mounting holes II by adopting bolts or bolts and then are connected to form an umbrella-shaped waterproof object; the waterproof umbrella upper end adopts screw or vice lock of bolt to fix on the cable PE sheath through mounting hole I, waterproof umbrella lower part is provided with slip inside lining body mounting groove III, adopt the slip inside lining body that makes with the material that sealed tube contact sliding friction coefficient is little to install in the mounting groove III of waterproof umbrella lower part, adopt screw or vice through mounting hole II lock installation of bolt, the cover is on sealed tube, this slip inside lining body can freely slide on the cable sealed tube along with the expend with heat and contract with cold of PE sheath, thereby drive watertight fittings's waterproof umbrella can slide along with the expend with heat and contract with cold up and down.
The further technical scheme is as follows: the waterproof device suitable for the expansion and contraction of the PE sheath outside the inhaul cable further comprises a sliding lining supporting cylinder, the sliding lining supporting cylinder is fixed on the sealing cylinder in two halves, a welding mode or a packing adhesive mode is adopted to be connected into a whole, and the sliding lining body can slide on the sliding lining supporting cylinder along with the expansion and contraction of the PE sheath, so that a waterproof umbrella driving the waterproof device can slide up and down along with the expansion and contraction of PE.
The further technical scheme is as follows: the sliding lining body is strip-shaped and comprises a planar sliding lining body I or a boss type sliding lining body II, and the material with small sliding friction coefficient in contact with the sealing cylinder for manufacturing the sliding lining body is polytetrafluoroethylene material or self-lubricating rubber.
The sealing material is sealing putty or a water-swelling rubber sealing strip or silicone sealant or polysulfide sealant; the waterproof umbrella is made of engineering plastics, stainless steel, cast aluminum or cast steel.
By adopting the technical scheme, the waterproof device suitable for expansion and contraction of the PE sheath outside the inhaul cable has the following characteristics and beneficial effects:
1. the combined structural formula is adopted, the thermal expansion and cold retraction of the inhaul cable PE are reasonably decomposed, the service life of the inhaul cable PE sheath is shortened because the force generated by the thermal expansion and cold contraction of the inhaul cable PE is difficult to release, the waterproof requirement of the PE movable inhaul cable is met, and the manufacturing and construction are convenient, feasible and reliable.
2. The waterproof device suitable for the expansion and contraction of the PE sheath outside the guy cable is provided with the sliding inner lining body 4 which can slide on the guy cable sealing cylinder 6 along with the expansion and contraction of the PE sheath, so that the waterproof umbrella 3 of the waterproof device can slide up and down along with the expansion and contraction of PE, and the anchoring performance and the service life of the anchor device can be prevented from being influenced by water inflow of the guy cable anchor device caused by the damage of the expansion and contraction of the guy cable PE;
the sliding lining support is added to meet the requirements of expansion and contraction of the long rope PE, and meanwhile vibration of the waterproof device is reduced.
3. The waterproof device suitable for the expansion and contraction of the PE sheath outside the inhaul cable is provided with the sliding inner lining body capable of sliding on the inhaul cable sealing cylinder 6 along with the expansion and contraction of the PE sheath, and the waterproof performance can be prevented from being lost due to the damage of the heat shrinkage material caused by the disc transportation in the inhaul cable production process.
4. The sliding inner lining body 4 of the waterproof device suitable for expansion and contraction of the PE sheath outside the inhaul cable also plays a role in sealing the lower part of the waterproof umbrella 3 and supporting vibration of the part.
5. The waterproof device suitable for the expansion and contraction of the PE sheath outside the inhaul cable adopts a two-half structure, is convenient to install, can be used for replacing the inhaul cable waterproof cover provided with the existing waterproof cover, and solves the problem of waterproof failure of the heat-shrinkable material in the later stage.
6. The utility model relates to a waterproof device suitable for expansion and contraction of a PE sheath outside a guy cable, which has the form of an umbrella structure, so that the guy cable has more attractive appearance.
The technical characteristics of the waterproof device suitable for expansion and contraction of the PE sheath of the inhaul cable are further described below with reference to the accompanying drawings and the embodiment.
Drawings
FIG. 1 is a schematic diagram of a waterproof device structure and installation and use states suitable for expansion and contraction of an outer PE sheath of a inhaul cable according to an embodiment of the utility model;
fig. 2 is a schematic diagram of a waterproof device structure suitable for expansion and contraction of a PE sheath outside a guy cable (with a supporting cylinder) and a mounting and using state of the waterproof device in accordance with a second embodiment of the present utility model;
FIG. 3 is a schematic structural view of a waterproof umbrella;
FIG. 4 is a schematic view showing an installation state of a sliding lining body according to the first embodiment;
FIG. 5 is a schematic view showing the installation state of a sliding lining body with a supporting cylinder according to the second embodiment;
FIGS. 6 to 7 are schematic views of planar sliding inner lining structures;
FIGS. 8 to 9 are schematic views of sliding inner lining body structures with bosses;
fig. 10 is a schematic view showing a state in which a conventional cable outer sheath is waterproof-sealed by using a heat shrinkage sleeve or a heat shrinkage tape.
In the figure:
1-rope body with PE outer sheath, 2-sealing material, 3-waterproof umbrella, 301-groove I, 302-groove II, 303-groove III, 304-mounting hole I, 305-mounting hole II, 4-sliding inner lining body, 4 a-sliding inner lining body I, 4 b-sliding inner lining body II, 5-inner lining supporting cylinder, 6-sealing cylinder and 7-heat shrinkage sleeve.
Detailed Description
Embodiment one:
waterproof device suitable for expansion with heat and contraction with cold of PE sheath outside inhaul cable:
as shown in fig. 1, the waterproof device comprises a waterproof umbrella 3, a screw or bolt pair matched with the waterproof umbrella, and a sliding inner lining body 4;
the waterproof umbrella 3 is in a left half type and a right half type, the joint is in a straight line, or in a tooth shape or in a fold line, and the two half type waterproof umbrellas are fastened and fixed through the mounting holes I304 and the mounting holes II 305 by adopting bolts or bolts and then are connected to form an umbrella-shaped waterproof object (see figure 3); the upper end of the waterproof umbrella 3 is fastened and fixed on the outer PE sheath of the inhaul cable through a mounting hole I304 by adopting a screw or bolt pair, a sliding inner lining body 4 mounting groove III 303 is formed in the lower part of the waterproof umbrella 3, the sliding inner lining body 4 made of a material with small sliding friction coefficient is mounted in the mounting groove III 303 in the lower part of the waterproof umbrella by adopting a material with small sliding friction coefficient in contact with a sealing cylinder, and the waterproof umbrella is fastened and mounted through a mounting hole II 305 by adopting a screw or bolt pair and sleeved on the sealing cylinder 6; the sliding lining body 4 can slide on the inhaul cable sealing cylinder 6 along with the expansion and contraction of the inhaul cable PE sheath, so that the waterproof umbrella 3 driving the waterproof device can slide up and down along with the expansion and contraction of the PE sheath (see figures 1, 3 and 4).
Embodiment two:
waterproof device suitable for cable outer PE sheath expend with heat and contract with cold with support section of thick bamboo:
the basic structure is the same as that of the first embodiment, and the difference is that: the waterproof device II suitable for the expansion and contraction of the PE sheath outside the inhaul cable further comprises a sliding lining supporting cylinder 5, the sliding lining supporting cylinder 5 is fixed on the sealing cylinder in two halves, a welding mode or a packing adhesive mode is adopted to be connected into a whole, the sliding lining body 4 can slide on the sliding lining supporting cylinder 5 along with the expansion and contraction of the PE sheath, and therefore the waterproof umbrella 3 driving the waterproof device can slide up and down along with the expansion and contraction of the PE sheath (see fig. 2 and 5).
According to the waterproof device with the supporting cylinder, which is suitable for thermal expansion and cold contraction of the outer PE sheath of the inhaul cable, the lining supporting cylinder 5 is additionally arranged, so that the requirement of thermal expansion and cold contraction of a large long cable can be met, and meanwhile vibration of the waterproof device is reduced.
In the first and second embodiments of the present utility model, the sliding inner body 4 is a long strip, and may be a flat sliding inner body 4a (see fig. 6 and 7), or a sliding inner body 4b (see fig. 8 and 9) with a boss in the longitudinal direction may be made of a polytetrafluoroethylene material or self-lubricating rubber, which has a small sliding friction coefficient in contact with the sealing cylinder.
In the first and second embodiments of the present utility model, the sealing material 2 is a sealing putty, a water-swellable rubber sealing strip, a silicone sealant, or a polysulfide sealant.
In the first and second embodiments of the present utility model, the waterproof umbrella 3 is made of engineering plastic, stainless steel, cast aluminum or cast steel.
When the waterproof umbrella is installed and used, a waterproof sealing filler, namely sealing material 2, is added into a groove I301 and a groove II 302 at the upper part of the waterproof umbrella 3, a sliding inner lining body 4 is placed into a groove III 303 at the lower part of the waterproof umbrella, the sliding inner lining body is buckled to a proper position at the joint of a rope body and a sealing cylinder, the upper part of the waterproof umbrella 3 is fixed on a PE outer sheath of the rope body with the PE outer sheath by using a matched screw or bolt, the lower part of the waterproof umbrella 3 is buckled by using the matched screw or bolt, the sliding inner lining body 4 is pressed, the sliding inner lining body is sleeved on the inhaul cable sealing cylinder or the inner lining supporting cylinder, the position and the angle of the waterproof umbrella 3 are adjusted, and then the screw or bolt is screwed, so that the upper part of the waterproof umbrella is fixed; then the waterproof sealing material 2 is used as a filler to fill the buckling gaps; in the running process of the bridge inhaul cable, because of the change of weather, the PE is serious in expansion with heat and contraction with cold, when the weather is cold, the PE contracts to drive the waterproof umbrella 3 to move upwards, and when the weather is hot, the PE extends to drive the waterproof umbrella to move downwards; always achieves the purpose of adapting to PE expansion with heat and contraction with cold deformation, and ensures the service life of the inhaul cable.
The waterproof device suitable for the expansion and contraction of the PE sheath outside the inhaul cable can be installed during production or during later maintenance; the existing heat shrink sleeve or heat shrink tape may also be removed and reinstalled.
Claims (4)
1. Waterproof device suitable for expansion with heat and contraction with cold of outer PE sheath of cable, including waterproof umbrella, supporting screw or bolt pair, its characterized in that: the waterproof device suitable for expansion and contraction of the PE sheath outside the inhaul cable also comprises a sliding inner lining body (4);
the waterproof umbrella (3) is in a left half type and a right half type, the joint is in a straight line, or in a tooth shape or in a fold line, and the two half type waterproof umbrellas are connected to form an umbrella-shaped waterproof object after being fastened and fixed through the mounting holes I (304) and the mounting holes II (305) by adopting bolts or bolts; the waterproof umbrella (3) upper end adopts screw or vice lock of bolt to fix on the cable PE sheath through mounting hole I (304), waterproof umbrella (3) lower part is provided with slip inside lining body (4) mounting groove III (303), adopt and contact slip inside lining body (4) that the material that coefficient of friction is little is made with sealed jar to install in mounting groove III (303) of waterproof umbrella lower part, adopt screw or vice lock installation of passing through mounting hole II (305), the cover is on sealed jar (6), this slip inside lining body (4) can freely slide on cable sealing cylinder (6) along with the expend with heat and contract with cold of PE sheath, thereby waterproof umbrella (3) of drive watertight fittings can slide along with the expend with heat and contract with cold of PE up and down.
2. The waterproof device suitable for expansion and contraction of an outer PE sheath of a inhaul cable according to claim 1, wherein: the waterproof device suitable for the expansion and contraction of the PE sheath outside the inhaul cable further comprises a sliding lining supporting cylinder (5), the sliding lining supporting cylinder (5) is fixed on the sealing cylinder in two halves, a welding mode or a packing adhesive mode is adopted to be connected into a whole, and the sliding lining body (4) can slide on the sliding lining supporting cylinder (5) along with the expansion and contraction of the PE sheath.
3. The waterproof device suitable for expansion and contraction of the outer PE sheath of the inhaul cable according to claim 1 or 2, characterized in that: the sliding lining body (4) is of a strip shape and comprises a planar sliding lining body I (4 a) or a boss type sliding lining body II (4 b), and the material with small sliding friction coefficient, which is in contact with the sealing cylinder, of the sliding lining body (4) is made of polytetrafluoroethylene material or self-lubricating rubber.
4. The waterproof device suitable for expansion and contraction of the outer PE sheath of the inhaul cable according to claim 1 or 2, characterized in that: the waterproof sealing filler-sealing material (2) added in the groove I (301) at the upper part of the waterproof umbrella (3) is sealing putty, a water-swelling rubber sealing strip, silicone sealing gel or polysulfide sealing gel; the waterproof umbrella (3) is made of engineering plastics or stainless steel or cast aluminum or cast steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811002946.6A CN108951421B (en) | 2018-08-30 | 2018-08-30 | Waterproof device suitable for expansion with heat and contraction with cold of PE sheath outside inhaul cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811002946.6A CN108951421B (en) | 2018-08-30 | 2018-08-30 | Waterproof device suitable for expansion with heat and contraction with cold of PE sheath outside inhaul cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108951421A CN108951421A (en) | 2018-12-07 |
| CN108951421B true CN108951421B (en) | 2023-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811002946.6A Active CN108951421B (en) | 2018-08-30 | 2018-08-30 | Waterproof device suitable for expansion with heat and contraction with cold of PE sheath outside inhaul cable |
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| CN (1) | CN108951421B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110359370B (en) * | 2019-07-17 | 2021-02-02 | 广东迈诺工业技术有限公司 | Inhaul cable with sealing structure rain cover and manufacturing method thereof |
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| JP2002061115A (en) * | 2000-08-24 | 2002-02-28 | Yokohama Rubber Co Ltd:The | Cable water stop cover |
| EP1505223A1 (en) * | 2003-08-02 | 2005-02-09 | Dywidag-Systems International GmbH | Corrosion protected tendon, especially for prestressed concrete |
| JP2008167607A (en) * | 2006-12-28 | 2008-07-17 | Tokyo Electric Power Co Inc:The | Waterproof device for conduit port |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4327834B2 (en) * | 2006-10-11 | 2009-09-09 | 株式会社ブリッジ・エンジニアリング | Waterproofing method and apparatus for cable fixing part of cable stayed bridge |
| JP5843554B2 (en) * | 2011-10-03 | 2016-01-13 | 東京ファブリック工業株式会社 | Cable cover |
| CN103741600B (en) * | 2014-01-28 | 2015-09-23 | 江苏法尔胜缆索有限公司 | Suspension cable beam-ends tarpaulin |
| CN106894339B (en) * | 2017-03-29 | 2019-07-23 | 柳州欧维姆机械股份有限公司 | Bridge cable flexible water device and its method for realizing cable body waterproof cover waterproof sealing |
| CN107558371B (en) * | 2017-09-27 | 2023-04-18 | 柳州欧维姆机械股份有限公司 | Sealing structure of inhaul cable embedded pipe orifice and method for realizing reliable sealing of inhaul cable embedded pipe orifice |
| CN209144656U (en) * | 2018-08-30 | 2019-07-23 | 柳州欧维姆机械股份有限公司 | It is a kind of suitable for PE sheath expands with heat and contract with cold outside drag-line water-tight device |
-
2018
- 2018-08-30 CN CN201811002946.6A patent/CN108951421B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002061115A (en) * | 2000-08-24 | 2002-02-28 | Yokohama Rubber Co Ltd:The | Cable water stop cover |
| EP1505223A1 (en) * | 2003-08-02 | 2005-02-09 | Dywidag-Systems International GmbH | Corrosion protected tendon, especially for prestressed concrete |
| JP2008167607A (en) * | 2006-12-28 | 2008-07-17 | Tokyo Electric Power Co Inc:The | Waterproof device for conduit port |
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| CN108951421A (en) | 2018-12-07 |
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