CN105390981A - Method and device for avoiding damage of tower in frozen period - Google Patents
Method and device for avoiding damage of tower in frozen period Download PDFInfo
- Publication number
- CN105390981A CN105390981A CN201510813557.1A CN201510813557A CN105390981A CN 105390981 A CN105390981 A CN 105390981A CN 201510813557 A CN201510813557 A CN 201510813557A CN 105390981 A CN105390981 A CN 105390981A
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- CN
- China
- Prior art keywords
- shaft tower
- arm
- unhook
- gold utensil
- pulley
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/02—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/16—Devices for removing snow or ice from lines or cables
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- Electric Cable Installation (AREA)
- Insulators (AREA)
Abstract
The invention discloses a method for avoiding damage of a tower in a frozen period. The method comprises the steps that a pair of matched hitching device and unhooking hardware fitting is arranged between a cross arm and an insulator chain which are mutually connected, a matched pulley and steel rope are simultaneously arranged on the tower, one end of the steel rope is connected to a winding device on the bottom part of the tower, and the other end is tied to the unhooking hardware fitting. In the frozen period, the winding device is operated to drive the steel rope for realizing separation between the hitching device and the unhooking hardware fitting, and after the separation, the winding device drags the steel rope so as to fall the unhooking hardware fitting, the insulator chain and an accessory power transmission line to the ground, so that the loads of the tower is reduced, and the damage of the tower is avoided.
Description
Technical field
The present invention relates to a kind of congeal period avoid shaft tower to damage method and device, belong to the technical field of overhead transmission line safety measure.
Background technology
The main power transmission mode adopted since overhead transmission line transmission of electricity is electric power industry development.The power station of different regions, transformer station, load point are coupled together by overhead transmission line, conveying or exchange electric energy, form electric power networks or the power distribution network of various electric pressure.The part such as overhead transmission line route wire, overhead ground wire, insulator string, shaft tower, cross-arm composition.The function passing to electric current born by wire, and shaft tower is the main support structure of overhead transmission line, how to be made up of armored concrete or steel, and structural design is carried out in the requirement according to mechanical strength and electric simulation strength.The icing of overhead transmission line and accumulated snow problem are all very general in the whole nation, ice sheet can cause circuit to puncture, at mountain area and extremely frigid zones, by with a varied topography, the impact of climate variability, transmission line will be destroyed when the ice sheet on transmission line has exceeded and born the limit, shaft tower is caused to collapse, transmission line is all more serious because endangering by ice and snow the power failure accident caused in the winter time usually, its repair difficulty is large, cycle is long, and power failure influence area is wide, constitutes serious threat to the safe operation of electric power system.The de-icing method of overhead transmission line common at present can be divided into heating power deicing method, mechanical deicing's method and natural deicing method three major types substantially.The foundation rule of thermal ice-melting method is that this method consuming cost is large, the circuit of long distance is implemented more difficult on the line by being greater than the transmission current of normal current density thus obtaining Joule heat and carry out ice-melt; Namely Mechanical Method directly uses machine tool or uses the Mechanical Method such as thing, automatic machinery people, shock wave of jettisoninging at a distance, the modes such as blast, bending, coil buckling are adopted to carry out deicing, usual mechanical means is energy ~ 1/200 required for heating power method, so mechanical deicing's method less expensive, but this quadrat method easily makes wire damaged, and the vibration produced in ice detachment very likely causes the shaft tower unbalance stress after freezing and collapses; Nature deicing method mainly adopts counterweight technology, resistance snow ring, hates this several method of ice coating, can effectively limit icing effect, but in the presence of a harsh environment, faces large area equally and to freeze and cannot the situation of deicing.Above-mentioned de-icing method and equipment are not all accomplished fast, efficient, safe to carry out deicing.
Summary of the invention
The technical problem to be solved in the present invention is, provides a kind of method that shaft tower damages when can avoid powerline ice-covering and device thereof, can overcome the deficiencies in the prior art.
Technical scheme of the present invention is: a kind of method avoiding shaft tower to damage in period of congealing, the method be interconnective cross-arm with the secondary hanging device that coordinates and a unhook gold utensil is set between insulator string, arrange on shaft tower simultaneously and coordinate pulley and cable wire, one end of cable wire is connected to the take-up bottom shaft tower, the other end leads on unhook gold utensil, congealing, period realizes being separated of hanging device and unhook gold utensil by operating take-up band running wire, and take-up pins down cable wire by tripping gear after isolation, insulator string and subsidiary power transmission line thereof are down to ground, reducing shaft tower heavy burden avoids shaft tower to damage.
The described device avoiding shaft tower to damage in period of congealing, it comprises shaft tower, the cross-arm of shaft tower is connected with insulator string, power transmission line is connected with at the other end of insulator string, cross-arm is connected with hanging device, be connected with unhook gold utensil in the upper end of insulator string, hanging device cooperatively interacts with unhook gold utensil and is connected; Be provided with take-up in the bottom of shaft tower, crosspiece is provided with pulley and the cable wire of cooperation, one end of cable wire is connected on take-up, and the other end is connected with unhook gold utensil.The described device avoiding shaft tower to damage in period of congealing, the hanging device and unhook gold utensil of the connection that cooperatively interacts are furnished with anti-falling safety device.
Described hanging device is the two pieces of upper hook type link plates being connected to cross-arm, and unhook gold utensil is the support bar that two ends are connected on hook type scraper plate, is connected with insulator string at the middle part of support bar.Described anti-falling safety device comprises straight blocking arm, axle center, the upper end empty set of straight blocking arm is in the rotating shaft of pulley, and arrange in the rotating shaft junction of straight blocking arm and pulley can with the ratchet mechanism of pulley rotation, straight blocking arm upper end is connected with the ratchet of ratchet mechanism, the sidewall of pulley is connected with the rocking bar of ratchet mechanism, and lower end side contacts with the support bar of unhook gold utensil.
Described hanging device is the two pieces of upper L-type guide rail link plates being connected to cross-arm, and unhook gold utensil is the slide bar that can slide on L-type guide rail link plate, is connected with insulator string at the middle part of slide bar.Described anti-falling safety device is made up of eccentric blocking arm and flexible post rod mechanism, the eccentric shaft of eccentric blocking arm is fixed on flexible post rod mechanism, its side arm contacts with slide bar, flexible post rod mechanism is connected to cross-arm lower end, flexible post rod mechanism comprises push rod, pulley fixed frame and push rod grafting orifice plate and anti-turn spring, one end of push rod is connected with pulley fixed frame, the other end is hinged through the upper end of push rod grafting orifice plate and eccentric blocking arm, and anti-turn spring is arranged on tail end and the push rod end contact of push rod grafting orifice plate.
The described device avoiding shaft tower to damage in period of congealing, take-up is set to the winching barrel being with equipment gear.
Compared with the prior art, the present invention by interconnective cross-arm with the secondary hanging device that coordinates and a unhook gold utensil is set between insulator string, arrange on shaft tower simultaneously and coordinate pulley and cable wire, one end of cable wire is connected to the take-up bottom shaft tower, the other end leads on unhook gold utensil, being separated of hanging device and unhook gold utensil can be realized by operation take-up band running wire like this in period of congealing, and take-up pins down cable wire by tripping gear after isolation, insulator string and subsidiary power transmission line thereof are down to ground, reducing shaft tower heavy burden avoids shaft tower to damage.
Be the two pieces of hook type link plates be arranged on cross-arm by hanging device, anti-falling safety device is that arrange can with the straight blocking arm of pulley main axis, the upper end of straight blocking arm is connected in the rotating shaft of pulley, and the ratchet that can rotate with pulley direction is set in the junction of straight blocking arm and pulley rotating shaft, lower end side contacts with the support bar of unhook gold utensil, such unhook gold utensil by wind impact would not skid off hanging device, and more firmly connect, ratchet can prevent straight blocking arm from rotating backward.
Be the two pieces of upper L-type guide rail link plates being connected to cross-arm by hanging device, unhook gold utensil is the slide bar that can slide on L-type guide rail link plate, insulator string is connected with at the middle part of slide bar, anti-falling safety device is made up of eccentric blocking arm and flexible post rod mechanism, the eccentric shaft of eccentric blocking arm is fixed on flexible post rod mechanism, its side arm contacts with slide bar, flexible post rod mechanism is connected to cross-arm lower end, flexible post rod mechanism comprises push rod, pulley fixed frame and push rod grafting orifice plate and anti-turn spring, one end of push rod is connected with pulley fixed frame, the other end is hinged through the upper end of push rod grafting orifice plate and eccentric blocking arm, anti-turn spring is arranged on tail end and the push rod end contact of push rod grafting orifice plate, such unhook gold utensil is subject to windage can not skid off hanging device, flexible post rod mechanism can prevent eccentric blocking arm from rotating backward.
By being set to take-up be with the winching barrel of equipment gear, like this when unregulated power exports, the winching barrel that hand-operated tools can be utilized to be connected to band equipment gear doing traction and transports merit.
Accompanying drawing explanation
Fig. 1 is the syndeton schematic diagram of embodiment 1;
Fig. 2 is the end view of Fig. 1;
Fig. 3 is the syndeton schematic diagram of embodiment 2;
Fig. 4 is the state diagram of Fig. 3;
Fig. 5 is the end view of Fig. 3;
Fig. 6 is the Local map of Fig. 3;
Fig. 7 is overhead power transmission line pole tower layout plan;
Fig. 8 is the end view of duck-beak type cross-arm;
Fig. 9 is the vertical view of Fig. 8;
Figure 10 is the anti-falling safety device of ratchet structure.
Embodiment
Embodiment 1. is as shown in Fig. 1-2, Figure 10, a kind of device avoiding shaft tower to damage in period of congealing, it comprises shaft tower 1, the cross-arm 2 of shaft tower 1 is connected with insulator string 3, power transmission line is connected with at the other end of insulator string 3, it is characterized in that: on cross-arm 2, be connected with hanging device, be connected with unhook gold utensil 5 in the upper end of insulator string 3, hanging device cooperatively interacts with unhook gold utensil 5 and is connected; Be provided with take-up 8 in the bottom of shaft tower 1, crosspiece 2 is provided with pulley 6 and the cable wire 7 of cooperation, one end of cable wire 7 is connected on take-up 8, and the other end is connected with unhook gold utensil 5.
The hanging device and unhook gold utensil 5 of the connection that cooperatively interacts is furnished with anti-falling safety device.Hanging device is two the hook type link plates 41 be arranged on cross-arm 2.Unhook gold utensil 5 is connected to the support bar on hook type scraper plate 41 for two ends, is connected with insulator string 3 at the middle part of support bar.Anti-falling safety device comprises straight blocking arm 42, axle center, the upper end empty set of straight blocking arm 42 is in the rotating shaft of pulley 6, and arrange with the rotating shaft junction of pulley 6 at straight blocking arm 42 can with the ratchet mechanism 43 of pulley 6 one-directional rotation, straight blocking arm 42 upper end is connected with the ratchet 51 of ratchet mechanism 43, the sidewall of pulley 6 is connected with the ratchet 52 of ratchet mechanism 43, lower end side contacts with the support bar of unhook gold utensil 5, and the centre position near straight blocking arm 42 below cross-arm 2 is provided with lock pin 53, and cable wire 7 is through lock pin 53 hole.
When rotation winching barrel 10 makes cable wire 7 tighten up, lock pin 53 is opened, the characteristic of ratchet mechanism 43 makes straight blocking arm 42 rotate with pulley 6 and upwards opens, at this moment unhook gold utensil 5 outwards movement, after unhook gold utensil 5 is separated with hook type link plate 41, pull line 7 makes unhook gold utensil 5 and insulator string 3 drop to ground.
Embodiment 2. as seen in figures 3-6, a kind of device avoiding shaft tower to damage in period of congealing, it comprises shaft tower 1, the cross-arm 2 of shaft tower 1 is connected with insulator string 3, power transmission line is connected with at the other end of insulator string 3, it is characterized in that: on cross-arm 2, be connected with hanging device, be connected with unhook gold utensil 5 in the upper end of insulator string 3, hanging device cooperatively interacts with unhook gold utensil 5 and is connected; Be provided with take-up 8 in the bottom of shaft tower 1, crosspiece 2 is provided with pulley 6 and the cable wire 7 of cooperation, one end of cable wire 7 is connected on take-up 8, and the other end is connected with unhook gold utensil 5.
The hanging device and unhook gold utensil 5 of the connection that cooperatively interacts is furnished with anti-falling safety device.Hanging device is the two pieces of upper L-type guide rail link plates 44 being connected to cross-arm 2, and unhook gold utensil 5 is the slide bar that can slide on L-type guide rail link plate 44, is connected with insulator string 3 at the middle part of slide bar.Anti-falling safety device is made up of eccentric blocking arm 45 and flexible post rod mechanism, the eccentric shaft of eccentric blocking arm 45 is fixed on flexible post rod mechanism, its side arm contacts with slide bar, flexible post rod mechanism is connected to cross-arm 2 lower end, flexible post rod mechanism comprises push rod 46, pulley fixed frame 47 and push rod grafting orifice plate 48 and anti-turn spring 49, one end of push rod 46 is connected with pulley fixed frame 47, the other end is hinged through the upper end of push rod grafting orifice plate 48 with eccentric blocking arm 45, and anti-turn spring 49 is arranged on tail end and push rod 46 end contact of push rod grafting orifice plate 48.Take-up 8 is set to the winching barrel 10 being with equipment gear.
When rotation winching barrel 10 makes cable wire 7 tighten up, pulley fixed frame alive 47 is subject to the extruding of cable wire 7, promoting push rod 46 drives eccentric blocking arm 45 to rotate, while eccentric blocking arm 45 upwards rotates, unhook gold utensil 5 skids off along the track of guide rail link plate 44, after unhook gold utensil 5 is separated completely with guide rail link plate 44, pull line 7 makes unhook gold utensil 5 and insulator string 3 drop to ground, when cable wire 7 does not extrude pulley fixed frame, the power that anti-turn spring 49 gives push rod 46 1 reverse, rotates backward to prevent eccentric blocking arm.
The maximum pulling force that bears of described hanging device is 10-15 ton, and this calculates according to total weight after wire icing.
Described cable wire 7 to wrap up with antifreeze tubing from pulley 6 to the exposed part of winching barrel 10 and is attached to shaft tower 1, reduces the resistance freezing and bring cable wire 7.
Two kinds of forms in above-described embodiment 1 and example 2 are not only by described hanging device and unhook gold utensil, also comprising other can coordinate pulley and anti-falling safety device to implement insulator string together with the rising of power transmission line and the device of decline process and gold utensil, can configure according to concrete insulator string form.Described anti-falling safety device is not only two kinds of forms in above-described embodiment 1 and example 2, and also comprising other can the device that skids off of anti-locking hook gold utensil, can configure according to concrete unhook gold utensil.
Above-described is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the technology of the present invention principle; can also make some improvement and distortion, these improve and distortion also should be considered as protection scope of the present invention.
Claims (8)
1. the method avoiding shaft tower to damage in period of congealing, it is characterized in that: the method is between interconnective cross-arm (2) with insulator string (3), arrange the secondary hanging device that coordinates and a unhook gold utensil (5), arrange on shaft tower (1) simultaneously and coordinate pulley (6) and cable wire (7), one end of cable wire (7) is connected to the take-up (8) of shaft tower (1) bottom, the other end leads on unhook gold utensil (5), congealing, period realizes being separated of hanging device and unhook gold utensil (5) by operation take-up (8) band running wire (7), and take-up (8) pins down cable wire by tripping gear (5) after isolation, insulator string (3) and subsidiary power transmission line thereof are down to ground, reducing shaft tower (1) heavy burden avoids shaft tower to damage.
2. the device avoiding shaft tower to damage in period of congealing, it comprises shaft tower (1), the cross-arm (2) of shaft tower (1) is connected with insulator string (3), power transmission line is connected with at the other end of insulator string (3), it is characterized in that: on cross-arm (2), be connected with hanging device, be connected with unhook gold utensil (5) in the upper end of insulator string (3), hanging device cooperatively interacts with unhook gold utensil (5) and is connected; Be provided with take-up (8) in the bottom of shaft tower (1), crosspiece (2) is provided with pulley (6) and the cable wire (7) of cooperation, one end of cable wire (7) is connected on take-up (8), and the other end is connected with unhook gold utensil (5).
3. the device avoiding shaft tower to damage in period of congealing according to claim 2, is characterized in that: on the hanging device and unhook gold utensil (5) of the connection that cooperatively interacts, be furnished with anti-falling safety device.
4. the device avoiding shaft tower to damage in period of congealing according to claim 3, it is characterized in that: described hanging device is for being connected to two pieces of upper hook type link plates (41) of cross-arm (2), unhook gold utensil (5) is connected to the support bar on hook type scraper plate (41) for two ends, is connected with insulator string (3) at the middle part of support bar.
5. the device avoiding shaft tower to damage in period of congealing according to claim 4, it is characterized in that: described anti-falling safety device comprises straight blocking arm (42), axle center, the upper end empty set of straight blocking arm (42) is in the rotating shaft of pulley (6), and arrange in the rotating shaft junction of straight blocking arm (42) and pulley (6) can with the ratchet mechanism (43) of pulley (6) one-directional rotation, straight blocking arm (42) upper end is connected with the ratchet (51) of ratchet mechanism (43), the sidewall of pulley (6) is connected with the ratchet (52) of ratchet mechanism (43), lower end side contacts with the support bar of unhook gold utensil (5), in cross-arm (2) below, the centre position of straight blocking arm (42) is provided with lock pin (53), cable wire (7) is through lock pin (53) hole.
6. the device avoiding shaft tower to damage in period of congealing according to claim 3, it is characterized in that: described hanging device is for being connected to two pieces of upper L-type guide rail link plates (44) of cross-arm (2), unhook gold utensil (5) is at the upper slide bar slided of L-type guide rail link plate (44), can be connected with insulator string (3) at the middle part of slide bar.
7. the device avoiding shaft tower to damage in period of congealing according to claim 6, it is characterized in that: described anti-falling safety device is made up of eccentric blocking arm (45) and flexible post rod mechanism, the eccentric shaft of eccentric blocking arm (45) is fixed on flexible post rod mechanism, its side arm contacts with slide bar, flexible post rod mechanism is connected to cross-arm (2) lower end, flexible post rod mechanism comprises push rod (46), pulley fixed frame (47) and push rod grafting orifice plate (48) and anti-turn spring (49), one end of push rod (46) is connected with pulley fixed frame (47), the other end is hinged through the upper end of push rod grafting orifice plate (48) with eccentric blocking arm (45), anti-turn spring (49) is arranged on tail end and push rod (46) end contact of push rod grafting orifice plate (48).
8. the device avoiding shaft tower to damage in period of congealing according to claim 2, is characterized in that: take-up (8) is set to be with the winching barrel (10) of equipment gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510813557.1A CN105390981B (en) | 2015-11-23 | 2015-11-23 | Method and its device that shaft tower is damaged are avoided during congealing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510813557.1A CN105390981B (en) | 2015-11-23 | 2015-11-23 | Method and its device that shaft tower is damaged are avoided during congealing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105390981A true CN105390981A (en) | 2016-03-09 |
| CN105390981B CN105390981B (en) | 2017-09-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510813557.1A Expired - Fee Related CN105390981B (en) | 2015-11-23 | 2015-11-23 | Method and its device that shaft tower is damaged are avoided during congealing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105390981B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102412525A (en) * | 2011-11-15 | 2012-04-11 | 江苏省电力公司徐州供电公司 | Anti-falling hook for power insulating protective umbrella |
| JP5283716B2 (en) * | 2011-02-01 | 2013-09-04 | 中国電力株式会社 | Suspension device for power lines |
| CN103863942A (en) * | 2012-12-13 | 2014-06-18 | 北汽福田汽车股份有限公司 | Lifting hook anti-unhooking apparatus |
| CN204424800U (en) * | 2015-02-13 | 2015-06-24 | 国家电网公司 | The lifting device of replacing insulator string on transmission line |
| CN204464868U (en) * | 2015-04-14 | 2015-07-08 | 国家电网公司 | A kind of insulation position limitation protection umbrella |
-
2015
- 2015-11-23 CN CN201510813557.1A patent/CN105390981B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5283716B2 (en) * | 2011-02-01 | 2013-09-04 | 中国電力株式会社 | Suspension device for power lines |
| CN102412525A (en) * | 2011-11-15 | 2012-04-11 | 江苏省电力公司徐州供电公司 | Anti-falling hook for power insulating protective umbrella |
| CN103863942A (en) * | 2012-12-13 | 2014-06-18 | 北汽福田汽车股份有限公司 | Lifting hook anti-unhooking apparatus |
| CN204424800U (en) * | 2015-02-13 | 2015-06-24 | 国家电网公司 | The lifting device of replacing insulator string on transmission line |
| CN204464868U (en) * | 2015-04-14 | 2015-07-08 | 国家电网公司 | A kind of insulation position limitation protection umbrella |
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| Publication number | Publication date |
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| CN105390981B (en) | 2017-09-19 |
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Granted publication date: 20170919 Termination date: 20181123 |