CN107386770B - Vibration-damping composite cross arm electric pole convenient for replacing cross arm - Google Patents
Vibration-damping composite cross arm electric pole convenient for replacing cross arm Download PDFInfo
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- CN107386770B CN107386770B CN201710724807.3A CN201710724807A CN107386770B CN 107386770 B CN107386770 B CN 107386770B CN 201710724807 A CN201710724807 A CN 201710724807A CN 107386770 B CN107386770 B CN 107386770B
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- cross arm
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/24—Cross arms
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
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Abstract
The utility model provides a compound cross arm pole of damping convenient to change cross arm, including the pole body, install well looks staple bolt group and limit looks staple bolt group from top to bottom on the pole body, well looks staple bolt group is prepared the looks staple bolt by the well looks of setting up from top to bottom and is formed with well looks operation position staple bolt, limit looks staple bolt group is prepared the looks staple bolt of setting up from top to bottom and is formed with limit looks operation position staple bolt, the limit looks is prepared the looks staple bolt and limit looks operation position staple bolt both sides and is provided with the fixed position of the compound cross arm of limit looks along staple bolt axis symmetry, well looks is prepared looks staple bolt and well looks operation position staple bolt one side and is provided with well compound cross arm fixed position. The vibration-damping composite cross arm electric pole convenient for cross arm replacement can solve the problems of complex replacement and easy occurrence of fatigue damage, improve the construction efficiency and avoid personal injury and regional economic loss which are possibly brought; meanwhile, the high-frequency low-amplitude effect of the conductor breeze vibration applied to the composite cross arm through the insulator string is reduced, and the service life of the composite cross arm are prolonged.
Description
Technical Field
The invention relates to the field of transmission line engineering, in particular to a vibration-damping composite cross arm electric pole convenient for cross arm replacement.
Background
In transmission poles, the cross-arm of the pole is a very important component. It plays the important role of connecting the pole body, supporting the insulator string to hang the wire, and keeping the electrical distance between the wire and the pole body. The FRP composite material cross arm has excellent performances of light weight, excellent electrical performance, reduction of steel consumption of a power grid transmission system and the like, and is widely applied to a transmission tower, which is one of the current development and construction directions of power grids. There are many deficiencies and problems to be solved in the research. The anti-aging performance (acid, alkali and salt) and the thermal stability of the FRP composite cross arm are closely related to whether long-term net hanging operation can be performed. But research in this area is still insufficient. In order to ensure safe and stable operation, the composite cross arm needs to be replaced after reaching a certain service life and service life. If the traditional construction method is adopted, construction technicians need to prepare a large number of tools to play a role in temporarily anchoring and supporting the overhead conductor, and due to the fact that the operation is carried out on the rod, the operation area is small, and the number of overhead workers on the rod is limited. There is a lot of cross operations, which brings great danger to the operation of the constructors. Especially, when the main grid frame is replaced due to power failure, the power failure operation for a long time can cause great loss to regional economy. Meanwhile, the breeze vibration of the wire of the power transmission line can act on the composite cross arm through the insulator string, and the composite cross arm is easy to generate fatigue damage due to the action of high-frequency low-amplitude external force for a long time, so that the service life and the service life are reduced.
Disclosure of Invention
The technical problem to be solved by the invention is to provide the vibration-damping composite cross arm electric pole convenient for replacing the cross arm, which can solve the problems of complex replacement and easy occurrence of fatigue damage, improve the construction efficiency and avoid personal injury and regional economic loss which can be brought; meanwhile, the high-frequency low-amplitude action of the conductor breeze vibration applied to the composite cross arm through the insulator string is reduced, and the service life of the composite cross arm are prolonged.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a vibration-damping composite cross arm electric pole convenient for replacing a cross arm, which comprises an electric pole body,
the electric pole comprises an electric pole body, and is characterized in that a middle-phase hoop group and a side-phase hoop group are arranged on the electric pole body from top to bottom, the middle-phase hoop group consists of a middle-phase preliminary phase hoop and a middle-phase running phase hoop which are arranged up and down, the side-phase hoop group consists of a side-phase preliminary phase hoop and a side-phase running phase hoop which are arranged up and down, side-phase composite cross arm fixing positions are symmetrically arranged on two sides of the side-phase preliminary phase hoop and the side-phase running phase hoop along a hoop central axis, and a middle-phase composite cross arm fixing position is arranged on one side of the middle-phase preliminary phase hoop and the middle-phase running phase hoop;
the side phase composite cross arm fixing position and the middle phase composite cross arm fixing position are matched with the composite cross arm;
the composite cross arm is provided with a detuning pendulum;
in the detuning pendulum, the cover is established to the cross arm staple bolt and is located on compound cross arm, and cross arm staple bolt below is connected with fixed short slab and fixed long slab respectively, through the bolt fastening between fixed short slab and the fixed long slab, and both sides are connected with short pendulum and long pendulum respectively on the fixed long slab, and the recess has been seted up to short pendulum one side, installs on the long pendulum with recess matched with stopper.
The distance of 4-5 insulator string lengths is arranged between the side phase running position hoop and the side phase preparation position hoop, and the distance of 4-5 insulator string lengths is arranged between the middle phase running position hoop and the middle phase preparation position hoop.
The composite cross arm is provided with two suspension string hanging plate holes on one side hanging plate.
The composite cross arm can also be a composite cross arm with two suspension string hanging plate holes and two construction holes arranged on the suspension hanging plate on one side.
The short pendulum comprises square pendulum body and the short pendulum link plate that sets up in square pendulum body top, has seted up the mounting hole on the short pendulum link plate.
The square pendulum hammer body is a hollow hammer body made of cast iron, and iron sand occupying 70% of the volume of the cavity is filled in the cavity of the inner cavity.
The long pendulum bob is a solid semi-conical plate made of cast iron.
The vibration-damping composite cross arm electric pole convenient for cross arm replacement provided by the invention is provided with 2 groups of 4 hoops which are divided into an operation position and a preparation position. When the composite cross arm in the run bit expires, a new composite cross arm may be installed in the prepare bit. At this point the roles of the original run bit and the spare bit are swapped. By adopting the redundancy design, when the new composite cross arm is replaced in the later period, the construction hole on the new composite cross arm can be used as a stress fulcrum of an operator, so that the old cross arm can be conveniently taken down.
The number of the insulator pieces is increased when the insulator is installed in a non-original position, so that the original creepage specific distance is not reduced, and the continuous safe and stable operation of the tower is ensured.
By adding the detuning pendulum mechanism on the composite cross arm, the energy transmitted to the composite cross arm by the aeolian vibration of the lead through the insulator string is consumed, so that the stress environment of the composite cross arm is improved, and the service life of the composite cross arm are prolonged.
The complex operation of replacing the cross arm is omitted for construction technicians, and the composite cross arm can be easily and conveniently replaced under the condition that 1-2 high-altitude technicians are invested, so that the construction efficiency is improved, and personal injury and regional economic loss which are possibly brought are avoided; meanwhile, the high-frequency low-amplitude action of the conductor breeze vibration applied to the composite cross arm through the insulator string is reduced, and the service life of the composite cross arm are prolonged.
Drawings
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
fig. 1 is a schematic structural view of the present invention, in which a composite cross arm is a composite cross arm with two hanging string hanging plate holes formed on a hanging plate on one side;
FIG. 2 is a schematic view of a composite cross arm with two suspension string hanging plate holes and two construction holes formed on one side of a suspension hanging plate according to the invention;
FIG. 3 is a schematic view of a short pendulum used in the present invention;
fig. 4 is a schematic view of a long pendulum used in the present invention.
Detailed Description
As shown in fig. 1-4, a vibration-damping composite cross arm electric pole convenient for cross arm replacement comprises an electric pole body 1,
the electric pole comprises an electric pole body 1, wherein a middle phase hoop group and a side phase hoop group are arranged on the electric pole body from top to bottom, the middle phase hoop group consists of a middle phase preliminary phase hoop 2 and a middle phase running position hoop 3 which are arranged up and down, the side phase hoop group consists of a side phase preliminary phase hoop 4 and a side phase running position hoop 5 which are arranged up and down, side phase composite cross arm fixing positions 6 are symmetrically arranged on two sides of the side phase preliminary phase hoop 4 and the side phase running position hoop 5 along a hoop center axis, and a middle phase composite cross arm fixing position 7 is arranged on one side of the middle phase preliminary phase hoop 2 and the middle phase running position hoop 3;
the side phase composite cross arm fixing position 6 and the middle phase composite cross arm fixing position 7 are matched with the composite cross arm 8;
the composite cross arm 8 is provided with a detuning pendulum;
in the detuning pendulum, a cross arm hoop 9 is sleeved on a composite cross arm 8, a fixed short plate 10 and a fixed long plate 11 are connected below the cross arm hoop 9 respectively, the fixed short plate 10 and the fixed long plate 11 are fixed through bolts, a short pendulum 12 and a long pendulum 13 are connected to two sides of the fixed long plate 11 respectively, a groove 12-1 is formed in one side of the short pendulum 12, and a limiting block 13-1 matched with the groove 12-1 is installed on the long pendulum 13.
The distance of 4-5 insulator string lengths is arranged between the side phase running position hoop 5 and the side phase preparation hoop 4, and the distance of 4-5 insulator string lengths is arranged between the middle phase running position hoop 3 and the middle phase preparation hoop 2.
The composite cross arm 8 is a composite cross arm with two suspension string hanging plate holes 14-1 arranged on one side hanging plate 14.
The composite cross arm 8 can also be a composite cross arm with two suspension string hanging plate holes 14-1 and two construction holes 14-2 formed on the suspension hanging plate 14 on one side, as shown in fig. 2.
The short pendulum bob 12 consists of a square pendulum bob body 12-2 and a short pendulum bob hanging plate 12-3 arranged above the square pendulum bob body 12-2, a mounting hole is formed in the short pendulum bob hanging plate 12-3, and the short pendulum bob 12 is mounted on the fixed long plate 11 through a bolt.
The square pendulum hammer body 12-2 is a hollow hammer body made of cast iron, and iron sand occupying 70% of the cavity volume is filled in the cavity of the inner cavity.
The long pendulum bob 13 is a solid semicircular conical plate made of cast iron, a mounting hole is formed in the long pendulum bob 13, and the long pendulum bob 13 is mounted on the fixed long plate 11 through a bolt.
The installation and use process of the invention is as follows:
after the electric pole 1 body is assembled, construction technicians install the composite cross arm 8 of the three-phase lead for the electric pole. The composite cross arm 8 is respectively fixed at the side phase running position hoop 5 and the middle phase running position hoop 3 by using bolt connection;
and fixing the short fixing plates 10 and the long fixing plates 11 on the composite cross arms 8 to complete the installation of the electric pole.
The installation method of the detuning pendulum comprises the following steps:
step 1: first, two parts of the cross arm hoop 9 of the detuned pendulum are manufactured according to the installation position of the detuned pendulum on the composite cross arm 8 and the dimension specification of the composite cross arm 8. 4 bolt through holes are formed in the upper and lower connecting positions of the short fixing plate 10 and the long fixing plate 11 and are used for connection;
and 2, step: two short pendulum bolt fixing holes and long pendulum bolt fixing holes which are in the same vertical line are arranged on the connecting plate of the fixed long plate 11 at a proper distance;
and step 3: a short pendulum bob 12 is arranged on the short pendulum bob bolt fixing hole;
and 4, step 4: the long pendulum bob 13 is arranged on the bolt fixing hole of the long pendulum bob, and the check confirms that the limited block 13-1 of the long pendulum bob 13 is clamped in the groove 12-1 of the short pendulum bob 12.
When the service life and the service life set by the composite cross arm on the electric pole are up, the electric pole body 1 is replaced on a construction technician. Firstly, a constructor climbs to the composite cross arm 4 of the middle-phase running position hoop 3, hangs a heavy tackle at the position about 1m above the middle-phase cross arm preparation position hoop 2, and lifts a new composite cross arm to the middle-phase cross arm preparation position hoop 2; subsequently, a new composite cross arm is installed into the middle cross arm preliminary position hoop 2, and screws are screwed. At the moment, the constructor hangs one end of the two handle chain blocks at the construction hole of the new composite cross arm in sequence, and the other end is hung on the upper guide wire.
The two handle chain blocks are tightened, so that the load of the lead wire originally born by the two insulator strings is born by the two handle chain blocks. At the moment, 4-5 insulator sheets are hung on two hanging plate holes 14-1 of the new composite cross arm according to the distance between the middle-phase preliminary position hoop 2 and the middle-phase running position hoop 3, and the original insulator string which is not subjected to stress is detached and connected with the insulator sheet which is hung on the new composite cross arm. At the moment, the chain block is loosened, so that the connected insulator string is stressed.
Then, the technician loosens the screws of the composite cross arm 4 of the middle phase running position hoop 3, takes off the composite cross arm 4 with the end of the service life, and hoists the composite cross arm to the ground by the coir rope. Thus, the replacement of the original composite cross arm of the upper phase conducting wire is completed. Then, the technical staff goes down to the side phase lead and operates according to the steps, and the left phase composite cross arm and the right phase composite cross arm can be conveniently replaced. After the installation is finished, the original detuning pendulum mechanism can be repeatedly used on the newly installed cross arm.
The parts of the invention not described in detail are within the common general knowledge of a person skilled in the art.
The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and the scope of the present invention is defined by the claims, and equivalents including technical features described in the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the invention.
Claims (7)
1. The utility model provides a compound cross arm pole of damping convenient to change cross arm, includes pole body (1), its characterized in that:
the electric pole comprises an electric pole body (1), wherein a middle-phase hoop group and a side-phase hoop group are arranged on the electric pole body from top to bottom, the middle-phase hoop group consists of a middle-phase preparatory position hoop (2) and a middle-phase running position hoop (3) which are arranged up and down, the side-phase hoop group consists of a side-phase preparatory position hoop (4) and a side-phase running position hoop (5) which are arranged up and down, side-phase composite cross arm fixing positions (6) are symmetrically arranged on two sides of the side-phase preparatory position hoop (4) and the side-phase running position hoop (5) along a hoop central axis, and a middle-phase composite cross arm fixing position (7) is arranged on one side of the middle-phase preparatory position hoop (2) and the middle-phase running position hoop (3);
the side phase composite cross arm fixing position (6) and the middle phase composite cross arm fixing position (7) are matched with the composite cross arm (8);
the composite cross arm (8) is provided with a detuning pendulum;
in the detuning pendulum, a cross arm hoop (9) is sleeved on a composite cross arm (8), a fixed short plate (10) and a fixed long plate (11) are connected to the lower portion of the cross arm hoop (9) respectively, the fixed short plate (10) and the fixed long plate (11) are fixed through bolts, a short pendulum (12) and a long pendulum (13) are connected to the two sides of the fixed long plate (11) respectively, a groove (12-1) is formed in one side of the short pendulum (12), and a limiting block (13-1) matched with the groove (12-1) is installed on the long pendulum (13).
2. The vibration damping composite cross arm electric pole convenient for cross arm replacement of claim 1, characterized in that: the distance between the side phase running position hoop (5) and the side phase preparation position hoop (4) is 4-5 insulator string lengths, and the distance between the middle phase running position hoop (3) and the middle phase preparation position hoop (2) is 4-5 insulator string lengths.
3. The vibration-damping composite cross arm electric pole convenient for replacing a cross arm as claimed in claim 1, is characterized in that: the composite cross arm (8) is formed by arranging two suspension string hanging plate holes (14-1) on a hanging plate (14) at one side.
4. The vibration damping composite cross arm electric pole convenient for cross arm replacement of claim 1, characterized in that: the composite cross arm (8) is a composite cross arm with two suspension string hanging plate holes (14-1) and two construction holes (14-2) arranged on one suspension hanging plate (14).
5. The vibration damping composite cross arm electric pole convenient for cross arm replacement of claim 1, characterized in that: the short pendulum bob (12) consists of a square pendulum bob body (12-2) and a short pendulum bob hanging plate (12-3) arranged above the square pendulum bob body (12-2), and the short pendulum bob hanging plate (12-3) is provided with a mounting hole.
6. The vibration damping composite cross arm electric pole convenient for cross arm replacement of claim 5, characterized in that: the square pendulum hammer body (12-2) is a hollow hammer body made of cast iron, and iron sand occupying 70% of the volume of the cavity is filled in the cavity of the inner cavity.
7. The vibration-damping composite cross arm electric pole convenient for replacing a cross arm as claimed in claim 1, is characterized in that: the long pendulum bob (13) is a solid semi-conical plate made of cast iron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710724807.3A CN107386770B (en) | 2017-08-22 | 2017-08-22 | Vibration-damping composite cross arm electric pole convenient for replacing cross arm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710724807.3A CN107386770B (en) | 2017-08-22 | 2017-08-22 | Vibration-damping composite cross arm electric pole convenient for replacing cross arm |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107386770A CN107386770A (en) | 2017-11-24 |
| CN107386770B true CN107386770B (en) | 2022-09-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710724807.3A Active CN107386770B (en) | 2017-08-22 | 2017-08-22 | Vibration-damping composite cross arm electric pole convenient for replacing cross arm |
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| CN (1) | CN107386770B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB889961A (en) * | 1959-04-27 | 1962-02-21 | Hugh Fraser | Improved means for connecting overhead high tension electrical cables to the insulators of transmission towers |
| US4482125A (en) * | 1982-09-22 | 1984-11-13 | Over-Lowe Company | Lamp supporting unit for absorbing shocks and vibrations |
| US7278247B2 (en) * | 2004-05-07 | 2007-10-09 | Gary Baumgartner | Method and apparatus for replacing a utility pole |
| CN201781253U (en) * | 2010-09-16 | 2011-03-30 | 北京帕尔普线路器材有限公司 | Preformed detuning pendulum |
| CN102136691B (en) * | 2010-12-06 | 2015-06-03 | 国家电网公司 | Side-lap type wire vibration damper replacing tool |
| CN104947953B (en) * | 2015-05-21 | 2017-06-06 | 国家电网公司 | A kind of 10kV transmission line cement poles replacing options and the interim bar of replacing |
| CN205089029U (en) * | 2015-10-30 | 2016-03-16 | 国网山东鄄城县供电公司 | Multi -functional transmission line steel pipe pole |
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2017
- 2017-08-22 CN CN201710724807.3A patent/CN107386770B/en active Active
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| CN107386770A (en) | 2017-11-24 |
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