CN201349115Y - Special roller set for laying large-section cable - Google Patents
Special roller set for laying large-section cable Download PDFInfo
- Publication number
- CN201349115Y CN201349115Y CNU2008202148959U CN200820214895U CN201349115Y CN 201349115 Y CN201349115 Y CN 201349115Y CN U2008202148959 U CNU2008202148959 U CN U2008202148959U CN 200820214895 U CN200820214895 U CN 200820214895U CN 201349115 Y CN201349115 Y CN 201349115Y
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- support
- cylinder
- cable
- laying
- rollers
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Abstract
Disclosed is a special roller set for laying a large-section cable. The roller set comprises a strip-shaped support and a plurality of rollers, wherein a radial section of the strip-shaped support is U-shaped, and the rollers are arranged on the bottom surface and the side wall of the support. Shafts of the rollers which are arranged on the bottom surface of the support are perpendicular to the side wall of the support, and shafts of the rollers which are arranged on the side wall of the support are perpendicular to the bottom surface of the support. The special roller set for laying large-section cable has the advantages that various combining modes are adopted to manufacture and combine the support and the rollers, different arranging methods are used in different conditions, using spaces of the rollers are ensured, the requirement of structural rigidity of the rollers and the support is met, and installation and fixation of the support meet requirements of cable laying techniques. Moreover, the roller set is capable of minimizing pulling force and side drawing force, reducing mechanical strength and guaranteeing safety of the cable. The roller set is adaptable to conditions with complex geographical positions such as vertical drop laying, horizontal transitional laying and the like.
Description
Technical field
The utility model belongs to the power circuit technical field, specifically is that a kind of electric cable with large cross-section that is applied to lay dispensing heavy in section power cable lays the special cylinder group.
Background technology
In the prior art, how the continuous utilization of heavy in section power cable in electric power development is handled cable in the dispensing process well and is not subjected to the basic assurance that mechanical damage is the operation of cable long-term safety.For example when fall laying, utilized artificial and mechanical way of combining to be resolved in the past, but nowadays cable can not realize at all that from great (generally reaching 36kg/m) artificial construction the machine tool hard draw is also very big to cable fault; For another example, level is gently bent when laying, and pulling force is just very big completely for itself, and pulling force that the cable of turning is subjected to and side draw can't be imagined especially, are impracticable only according to the way that supports with headblock and brandreth.
So must draw relevant mechanics principle, adopt the different method to set up of various combination varying environment of making sectional shelf-unit and cylinder, it is minimum that the pulling force side draw is reduced to, and reduces mechanical strength, guarantees the fail safe of cable.
Summary of the invention
The technical problem that the utility model solves: at heavy in section power cables such as 220kv in laying dispensing, because cable is from great, existing laying tool can not be satisfied the demand, and the rapid increase of pulling force and side draw causes local compression in the complex environment of geographical position, and distortion cable has virtually produced huge infringement.
The combination utilization that the utility model lays special cylinder group and support by electric cable with large cross-section, the use according under the varying environment solves the problems referred to above, and concrete technical scheme is as follows:
A kind of electric cable with large cross-section lays the special cylinder group, comprises strip-shaped bracket and a plurality of cylinder, and the radial section of strip-shaped bracket is " recessed " font; Cylinder is located on the bottom surface and sidewall of support; The axle that is located at cylinder on the support bottom surface is perpendicular to rack side wall, and the axle that is located at cylinder on the rack side wall is perpendicular to the support bottom surface.
Also be provided with pin on the described strip-shaped bracket; Pin is connected across on the two side of support.
The horizontal cross-section of described strip-shaped bracket is an arc.
The centre position of the bottom surface of described support is provided with a cylinder; The both sides of each sidewall of support are respectively equipped with a cylinder, the cylinder position correspondence on the two side.
During use, can be used in combination,, cable be passed this support get final product along the arrangement of moving towards of cable by a plurality of cylinder group.Particularly:
1) axle of cylinder require to rotate smooth and easy and frictional force is less, therefore can adopt rolling bearing.
2) firm for guaranteeing cylinder group machinery, can adopt expansion bolt to be connected with ground.
The beneficial effects of the utility model are, adopt various combination of making sectional shelf-unit and cylinder, use different methods to set up, guarantee the usage space of cylinder in varying environment, satisfy the rigidity of structure of rolling stand, support installs and fixes and meets the cable laying specification requirement.It is minimum that the pulling force side draw is reduced to, and reduces mechanical strength, guarantees the fail safe of cable.This cylinder group is applicable to that normal throw lays, and level changes the geographical position complex environment such as lays.
Description of drawings
Fig. 1 is the utility model structural representation
Fig. 2 is the utility model user mode schematic diagram
Cylinder 1, support 2, pin 3, this cylinder group 4, cable 5, cable trough 6.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing and embodiment.
A kind of electric cable with large cross-section lays the special cylinder group, comprises strip-shaped bracket and cylinder, and the radial section of strip-shaped bracket is " recessed " font.The centre position of the bottom surface of described support is provided with a cylinder; The both sides of each sidewall of support are respectively equipped with a cylinder, the cylinder position correspondence on the two side.The axle that is located at cylinder on the support bottom surface is perpendicular to rack side wall, and the axle that is located at cylinder on the rack side wall is perpendicular to the support bottom surface.Also be provided with pin on the described strip-shaped bracket; Pin is connected across on the two side of support.The horizontal cross-section of described strip-shaped bracket is an arc.
Design and produce:
1) primary structure:, cylinder is installed respectively in support with control cable turn round direction and running rail with square tube weldering system cylinder mounting bracket; The installation shaft of both sides cylinder apart from by about assemble.When using, must install and use simultaneously by many series cylinders bend.(accompanying drawing)
2) technical parameter requires:
Outside diameter of cable 156.6mm, maximum drawbar pull 68.6N/mm2 (permission tractive effort≤175kN), cable allows lateral pressure 5000N/m, the lateral pressure that produces in the distraction procedure needs less than 500kg/m, bending radius 〉=3142mm when laying, the cable angle of turning round is 90 °, calculates the cylinder group number, the cylinder installing space, cable (steel frame construction) lateral pressure.
1. cylinder group number
Arc length: 1/4 π d=1/4*3.14159*6m*2=9.425m
Cylinder installation shaft linear distance is pressed 2.356m and is calculated, and needs to install 5 groups.
2. the cylinder installation dimension of every cylinder, cable (steel frame construction) lateral pressure:
Before cable entered cylinder, the hauling machine steel wire rope acted on the maximum lateral force F1 on the cylinder:
F1/F＝sinα (α＝11.263°)
F1＝F×sinα＝5.86KN
Annotate: F: cable pulling machine travel power 30KN
F1: act on side force on the cylinder (calculating) by the maximum weighted cylinder
α: the angle of steel wire rope and cylinder axis
3. enter conveyer 1 back at cable and suspend, hauling machine should quit work, and carry out cylinder by artificial cooperation cable end this moment, and laying mainly of cable finished by conveyer, so cable suffered maximum lateral force F2 on cylinder:
F2＝F×L/R
F2=5KN * 2.341m/6m=1.95KN＜3KN (with reference to the 2000mm2 cable data)
Annotate: F: telpher carrying capacity 5KN
F2: cable acts on side force on 2 cylinders (calculating by the maximum weighted cylinder) in cylinder
4. cylinder fixed expansion bolt receives shearing 5.86KN/4 most greatly, and withdrawal resistance F calculates:
According to principle of moment balance M1=M2
5.86KN×0.12m＝F×0.5m
F＝1.406KN
Annotate: M1: steel wire rope acts on the maximal bending moment on the cylinder
M2: expansion bolt maximal bending moment
F: expansion bolt withdrawal resistance
3) by above calculating:
Bending radius, lateral pressure and tractive force limit value during 1. according to the outside diameter of cable, cable laying and construction space, plan position approach etc., overall dimension, version, cylinder number and the position of calculating rolling stand.Therefore select 5 cylinders of each turning cylinder, specification is Φ 80*350; The wheelbase of both sides cylinder is 156.6mm+33.4mm+80mm=270mm; Installation shaft distance between one-sided cylinder is 32mm/34.5mm.
2. according to the mechanical strength of turning cylinder and the stability of construction,, should select φ 14 expansion bolts for use through looking into the five metals handbook.
3. according to the maximum lateral pressure of the crooked needs of cable and the mechanical strength and the stability requirement of bearing, with L50*5 square tube weldering system cylinder mounting bracket.
4. according to the arc radius of the tunnel section of turning round inwall, and must be under the prerequisite that satisfies Cable Bending Radius requirement when laying on-the-spot unwrapping wire, roller shelves is fixed on (secure fixation) on the concrete terrace, and the spacing of roller shelves is pressed 1m～2m along arc length and is laid, and the group number calculates by arc length.
4) on probation according to the scene, above-mentioned parameter satisfies the cable laying requirement.
Using method and specification requirement:
When 1. using cylinder group work, use after must and confirming by inspection through checking computations and on-the-spot unwrapping wire before installing and fixing, respectively dispose a telpher at the two ends of cylinder group during cable laying, so that remain on the axis of same plane during cable laying, and at the master control case of the section of turning round outfit telpher, special messenger's monitoring.
Should send the professional that operation is followed the tracks of at the scene when 2. using, and before cable just enters cylinder group, cable socket suitably be bended.
3. cable after entering cylinder tightens cylinder top pin, and observes the working condition of cylinder, checks whether cylinder work is synchronous, should stop laying task and timely adjusting cylinder immediately if any idle cylinder.
The working condition that 4. stressed, the cylinder group of special messenger's sync check cable should be arranged between operational period stops immediately laying and in time handles if any improper.Whether the cylinder profile that all should check cylinder during each cable laying intact, whether rotate normal, support is fixed with zero defect etc.
Result of use: by using, solved cable and laid at cable duct, tunnel bend place owing to lateral pressure The excessive damage that causes cable, the radian of cylinder group are the data that calculate according to cable duct, tunnel camber, But simultaneously cylinder group design also has regulatory function, and cable duct, the tunnel that can also be used for from now on different cambers apply If usefulness has been saved cost, improved service efficiency.
Claims (4)
1, a kind of electric cable with large cross-section lays the special cylinder group, it is characterized in that comprising strip-shaped bracket and a plurality of cylinder, and the radial section of strip-shaped bracket is " recessed " font; Cylinder is located on the bottom surface and sidewall of support; The axle that is located at cylinder on the support bottom surface is perpendicular to rack side wall, and the axle that is located at cylinder on the rack side wall is perpendicular to the support bottom surface.
2, electric cable with large cross-section according to claim 1 lays the special cylinder group, it is characterized in that also being provided with on the described strip-shaped bracket pin; Pin is connected across on the two side of support.
3, lay the special cylinder group according to claim 1 and 2 described electric cable with large cross-section, the horizontal cross-section that it is characterized in that described strip-shaped bracket is an arc.
4, electric cable with large cross-section according to claim 3 lays the special cylinder group, it is characterized in that the centre position of the bottom surface of described support is provided with a cylinder; The both sides of each sidewall of support are respectively equipped with a cylinder, the cylinder position correspondence on the two side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202148959U CN201349115Y (en) | 2008-12-11 | 2008-12-11 | Special roller set for laying large-section cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202148959U CN201349115Y (en) | 2008-12-11 | 2008-12-11 | Special roller set for laying large-section cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201349115Y true CN201349115Y (en) | 2009-11-18 |
Family
ID=41368581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202148959U Expired - Lifetime CN201349115Y (en) | 2008-12-11 | 2008-12-11 | Special roller set for laying large-section cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201349115Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103498964A (en) * | 2013-09-23 | 2014-01-08 | 浙江海洋学院 | Segmented aisle line support |
| CN107706826A (en) * | 2017-10-11 | 2018-02-16 | 国家电网公司 | A kind of branch-cut bridge device |
| CN109217184A (en) * | 2018-08-07 | 2019-01-15 | 国网江苏省电力有限公司无锡供电分公司 | Big section, high drop Voltage Cable Lines Construction high point non junction continuously lay engineering method |
| CN110131501A (en) * | 2019-06-19 | 2019-08-16 | 贵州盘江精煤股份有限公司 | A kind of continuous oil fuel tube flanged joint rolling mechanism |
| CN111306364A (en) * | 2020-03-06 | 2020-06-19 | 中国航发沈阳发动机研究所 | Limiting and guiding device |
-
2008
- 2008-12-11 CN CNU2008202148959U patent/CN201349115Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103498964A (en) * | 2013-09-23 | 2014-01-08 | 浙江海洋学院 | Segmented aisle line support |
| CN107706826A (en) * | 2017-10-11 | 2018-02-16 | 国家电网公司 | A kind of branch-cut bridge device |
| CN107706826B (en) * | 2017-10-11 | 2019-10-29 | 国家电网公司 | A kind of branch-cut bridge device |
| CN109217184A (en) * | 2018-08-07 | 2019-01-15 | 国网江苏省电力有限公司无锡供电分公司 | Big section, high drop Voltage Cable Lines Construction high point non junction continuously lay engineering method |
| CN110131501A (en) * | 2019-06-19 | 2019-08-16 | 贵州盘江精煤股份有限公司 | A kind of continuous oil fuel tube flanged joint rolling mechanism |
| CN111306364A (en) * | 2020-03-06 | 2020-06-19 | 中国航发沈阳发动机研究所 | Limiting and guiding device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20091118 Effective date of abandoning: 20081211 |