CN215671430U - Connecting hardware fitting and composite cross arm - Google Patents
Connecting hardware fitting and composite cross arm Download PDFInfo
- Publication number
- CN215671430U CN215671430U CN202121170949.8U CN202121170949U CN215671430U CN 215671430 U CN215671430 U CN 215671430U CN 202121170949 U CN202121170949 U CN 202121170949U CN 215671430 U CN215671430 U CN 215671430U
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- Prior art keywords
- plate
- sleeve
- fitting
- connecting hole
- cross arm
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- Expired - Fee Related
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- 239000002131 composite material Substances 0.000 title claims abstract description 18
- 239000012212 insulator Substances 0.000 claims abstract description 49
- 230000005540 biological transmission Effects 0.000 claims description 13
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 210000001503 joint Anatomy 0.000 abstract description 7
- 238000011900 installation process Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- 230000007704 transition Effects 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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Abstract
The utility model discloses a connecting hardware fitting and a composite cross arm, wherein the connecting hardware fitting comprises a hanging piece and two sleeve pieces, the whole hanging piece is a T-shaped piece, and the tail end of a web plate of the hanging piece is provided with a first connecting hole; the sleeve part comprises a sleeve part and a connecting part, the connecting part comprises a vertical plate, one end of the sleeve part is provided with a second connecting hole, and the other end of the sleeve part is connected with the vertical plate; the vertical plates of the two sleeve pieces are arranged in parallel, and a certain included angle is formed between the axes of the second connecting holes on the two sleeve pieces, and the included angle corresponds to the included angle of the two post insulators; the web clamp of hanging the piece is established between the vertical board of two casing spare, is provided with the otic placode on the sleeve pipe portion, is provided with the third connecting hole that is used for connecting to draw the insulator to one side on the otic placode. The connecting hardware fitting is more exquisite, reduces the material consumption, shortens the extending length of the cross arm after being connected on the cross arm compared with the connecting length of the existing flange plate and the like, and simplifies the butt joint installation process.
Description
Technical Field
The utility model belongs to the technical field of high-voltage power transmission equipment, relates to power transmission insulating equipment, and particularly relates to a connecting hardware fitting and a composite cross arm.
Background
The power transmission tower is a supporting point of an overhead line, and the design and the material of the structure of the power transmission tower directly influence the construction speed, the economy, the occupied area, the installation, the operation and the maintenance cost and the like of a power transmission line. Compared with the traditional cross arm, the composite cross arm cancels a suspension insulator string, reduces the width of a corridor, reduces windage yaw and electricity, reduces the height of breath, and simultaneously, the composite material has the advantages of high strength, light weight, corrosion resistance, good durability and the like. Composite crossarms are therefore increasingly used in transmission towers.
The post insulator is used as a main pressure-bearing member of the composite cross arm, the joint of the post insulator and the tower body is generally connected through a tower body connecting piece arranged on the tower body, and the front end of the post insulator is generally connected through a transition fitting. The commonly used front end connection form is flange plate butt joint or plate butt joint, as shown in fig. 1, the transition hardware fitting and the post insulator of the two independently exist, and the diagonal insulator is connected to the transition hardware fitting. The independent transition hardware fitting has the advantages of large steel consumption, complex bolt connection and long transition hardware fitting.
Disclosure of Invention
Aiming at the defects, the utility model provides a connecting hardware fitting and a composite cross arm, wherein the connecting hardware fitting and a post insulator are integrally formed, and the problems that the steel consumption of the connecting hardware fitting is large, the bolt connection is complex, the transition hardware fitting is long and the like due to the independent existence of the connecting hardware fitting and the post insulator at present are solved.
In order to solve the technical problems, the utility model adopts the following technical scheme:
a connecting hardware fitting comprises a hanging piece and two sleeve pieces; the whole hanging piece is a T-shaped piece, and a first connecting hole for connecting a wire hanging hardware fitting string is formed in the tail end of a web plate of the hanging piece; the sleeve part comprises a sleeve part and a connecting part, the connecting part comprises a vertical plate, one end of the sleeve part is provided with a second connecting hole matched with the outer diameter of the post insulator, and the other end of the sleeve part is connected with the vertical plate; the vertical plates of the two sleeve pieces are arranged in parallel, and a certain included angle is formed between the axes of the second connecting holes on the two sleeve pieces, and the included angle corresponds to the included angle of the two post insulators; the web plate of the hanging piece is clamped between the vertical plates of the two sleeve pieces; the sleeve portion is provided with an ear plate, and the ear plate is provided with a third connecting hole for connecting the diagonal insulator.
Preferably, the sleeve part is of a sleeve structure, the connecting part comprises an L-shaped plate and a vertical plate, one end of the L-shaped plate is connected with the end of the sleeve part, and the other end of the L-shaped plate is connected with the vertical plate.
More preferably, the L-shaped plate is provided with a reinforcing rib, and the reinforcing rib extends to the vertical plate.
Preferably, a fourth connecting hole is formed in the vertical plate, a fifth connecting hole corresponding to the fourth connecting hole is formed in the web plate of the hanging piece, and the vertical plate is connected with the web plate of the hanging piece through a bolt.
Preferably, the part of the tail end of the web plate of the hanging piece, which is positioned outside the two vertical plates, is semicircular.
The utility model also discloses a composite cross arm which comprises a post insulator, a diagonal insulator, a wire hanging hardware string and a connecting hardware, wherein the connecting hardware is the connecting hardware recorded in the utility model, the post insulator is connected in the second connecting hole of the sleeve part, the diagonal insulator is connected with the lug plate through the third connecting hole, and the wire hanging hardware string is connected in the first connecting hole.
Furthermore, a cross-shaped connecting plate is arranged at one end, connected with the power transmission tower body, of the post insulator, and a bolt hole is formed in the cross-shaped connecting plate.
Furthermore, both ends of the diagonal insulator are provided with U-shaped connecting pieces.
Compared with the prior art, the utility model has the beneficial effects that:
the connecting hardware fitting is more exquisite, reduces the material consumption, shortens the extending length of the cross arm after being connected on the cross arm compared with the connecting length of the existing flange plate and the like, and simplifies the butt joint installation process.
Other advantages of the utility model are detailed in the detailed description of the embodiments.
Drawings
Fig. 1 is a schematic structural diagram of a conventional link fitting.
Fig. 2 is a schematic structural diagram of a link fitting according to an embodiment of the present invention.
Fig. 3 is a side view of a link fitting according to an embodiment of the present invention.
Fig. 4 is another side view of the link fitting according to the embodiment of the present invention.
Fig. 5 is a top view of a link fitting according to an embodiment of the present invention.
Fig. 6 is a schematic structural diagram of a composite cross arm according to an embodiment of the present invention.
The various reference numbers in the figures illustrate:
1-connecting hardware fittings, 2-post insulators, 3-diagonal insulators, 4-wire hanging hardware fittings, 5-cross connecting plates and 6-U-shaped connecting pieces;
11-hanging piece, 12-sleeve piece;
111-flange plate, 112-web, 113-first connection hole;
121-sleeve part, 122-connecting part, 123-L-shaped plate, 124-vertical plate, 125-second connecting hole, 126-ear plate, 127-third connecting hole, 128-reinforcing rib, 129-fourth connecting hole;
51-bolt hole.
Detailed Description
The connecting hardware fitting is suitable for the double-column (two post insulators) and double-inclined (two inclined pull insulators) composite cross arm, can simplify the installation process, and shortens the overhanging length of the cross arm.
Specific examples of the present invention are given below. It should be noted that, in the following description, unless explicitly stated or limited otherwise, terms such as "disposed" and "connected" are to be understood broadly, and may be, for example, fixedly connected, detachably connected, or integrated; either a direct connection or an indirect connection, and the like. The specific meaning of the above terms in the present technical solution can be understood by those of ordinary skill in the art according to specific situations.
In the present invention, unless otherwise specified, the use of the terms of orientation such as "upper, lower, bottom, top" and "lower" generally refer to the definition in the drawing plane of the corresponding drawing, and "inner and outer" refer to the definition in the drawing plane of the corresponding drawing.
The individual features described in the following embodiments can be combined in any suitable manner without departing from the inventive idea, which should also be regarded as disclosed in the present application.
In an embodiment of the present invention, a link fitting is disclosed, as shown in fig. 2 to 5, the link fitting includes a hanging member 11 and two sleeve members 12.
The hanging piece 11 is a T-shaped piece and comprises a flange plate 111 and a web plate 112, and a first connecting hole 113 is formed in the tail end of the web plate 112 of the hanging piece 12 and used for connecting the hanging wire fitting string 4.
The sleeve member 12 includes a sleeve portion 121 and a connecting portion 122, the connecting portion 122 is provided with a vertical plate 124, one end of the sleeve portion 121 is provided with a second connecting hole 125 matching with the outer diameter of the post insulator 2 for inserting the post insulator 2; the other end is connected with vertical board 124, specifically, connecting portion 122 includes L shaped plate 123 and vertical board 124, and bushing portion 121 is the sleeve structure, and the inside of sleeve forms second connecting hole 125, and L shaped plate 123 one end is connected with bushing portion 121 end, and specifically, the plate body welding of this end is on the sleeve, and the other end is connected with vertical board 124, and the perpendicular limit of the plate body of this end and the perpendicular limit welding of vertical board 124 to this realizes that bushing portion 121 and connecting portion 122's integration is connected.
The L-shaped plate 123 of this embodiment is a 90 ° plate, so the angle between the ends of the two sleeve members where the L-shaped plates 123 are connected to the vertical plate 124 is equal to the angle between the two post insulators 2, and the angle between the two post insulators 2 is determined according to the size of the tower body of the power transmission tower.
The vertical plates 124 of the two sleeve members 12 are arranged in parallel, and a certain included angle is formed between the axes of the second connecting holes 125 on the two sleeve members 12, the included angle corresponds to the included angle of the two post insulators 2, the web plate 112 of the hanging member 11 is clamped between the vertical plates 124 of the two sleeve members 12, namely, the web plate 112 of the hanging member 11 and the vertical plates 124 of the two sleeve members 12 are arranged in parallel. In this embodiment, in order to fix the web 112 and the vertical plate 124, a fourth connection hole 129 is provided on the vertical plate 124, a fifth connection hole (not shown) is provided on the web 112 of the hanger 11, the arrangement position of the fifth connection hole corresponds to the arrangement position of the fourth connection hole 129, and the vertical plate 124 and the web 112 are connected by a bolt (not shown).
The sleeve portion 121 is provided with an ear plate 126, and the ear plate 126 is provided with a third connecting hole 127 for connecting the cable-stayed insulator 3.
As a further preferable solution of the above embodiment, a reinforcing rib 128 is provided on the L-shaped plate 123, and the reinforcing rib 128 extends to the vertical plate 124, as shown in fig. 2. In this embodiment, the reinforcing rib 128 is an irregular polygonal plate perpendicular to the surfaces of the L-shaped plate 123 and the vertical plate 124.
As a further preferable solution of the above embodiment, a portion of the end of the web 112 of the hanger 11, which is located outside the two vertical plates 124, is set to be semicircular to avoid interference with the wire harness string 4, and the first connection hole 113 is provided at the semicircular portion.
According to the utility model, the sleeve part 121 and the connecting part 122 at the front end of the post insulator 2 are integrally arranged, flange plate butt joint and plate butt joint are not used, and the connecting hardware fitting can be used for connecting two post insulators and providing a hanging point for a lead. The connecting fitting has the advantages that the extending length of the cross arm is shortened, the width of a corridor is reduced, butt joint installation is simplified, and the steel consumption is reduced.
In another embodiment of the present invention, a composite cross arm is disclosed, as shown in fig. 6, the composite cross arm includes a link fitting 1, a post insulator 2, a diagonal insulator 3, and a wire-hanging fitting string 4. The connecting hardware 1 is the connecting hardware described in the above embodiment, and the post insulator 2 is connected to the second connecting hole 125 of the bushing portion 12 and fixed by glue; the cable-stayed insulator 3 is connected with the ear plate 126 through a third connecting hole 127, and specifically, the two ends of the cable-stayed insulator 3 are both provided with a U-shaped connecting piece 6 which is hinged with the power transmission tower body and the ear plate 126 respectively. The string of stringing fittings 4 is connected in the first connection hole 113.
In addition, a cross-shaped connecting plate 5 is provided at one end of the post insulator 2 connected to the power transmission tower body, and a bolt hole 51 is provided in the cross-shaped connecting plate 5 and connected to the power transmission tower body by a bolt.
The composite cross arm of the utility model has simple stress principle, and the post insulator 2 mainly bears pressure under the normal operation condition and can bear partial tension and partial pressure under the condition of strong wind or uneven ice coating; the diagonal insulator 3 bears the tension and can effectively share the force acting on the post insulator 2; the whole cross arm system is simple in force transmission, force on each component can be effectively transmitted to the joint of the tower body, and the whole tower is reasonable in stress.
Claims (8)
1. The connecting fitting is characterized by comprising a hanging piece (11) and two sleeve pieces (12);
the whole hanging piece (11) is a T-shaped piece, and a first connecting hole (113) for connecting the wire hanging hardware fitting string (4) is formed in the tail end of a web plate (112) of the hanging piece;
the sleeve part (12) comprises a sleeve part (121) and a connecting part (122), the connecting part (122) comprises a vertical plate (124), one end of the sleeve part (121) is provided with a second connecting hole (125) matched with the outer diameter of the post insulator (2), and the other end of the sleeve part (121) is connected with the vertical plate (124);
the vertical plates (124) of the two sleeve pieces (12) are arranged in parallel, and the axes of the second connecting holes (125) on the two sleeve pieces (12) form a certain included angle, and the size of the included angle corresponds to that of the included angle of the two post insulators (2); the web plate (112) of the hanging piece (11) is clamped between the vertical plates (124) of the two sleeve pieces (12);
the sleeve part (121) is provided with an ear plate (126), and the ear plate (126) is provided with a third connecting hole (127) for connecting the diagonal insulator (3).
2. The link fitting according to claim 1, wherein the sleeve part (121) has a sleeve structure, the connecting part (122) includes an L-shaped plate (123) and a vertical plate (124), one end of the L-shaped plate (123) is connected to an end of the sleeve part (121), and the other end of the L-shaped plate (123) is connected to the vertical plate (124).
3. The link fitting according to claim 2, wherein the L-shaped plate (123) is provided with a reinforcing rib (128), and the reinforcing rib (128) extends to the vertical plate (124).
4. The link fitting according to claim 1, characterized in that a fourth connecting hole (129) is formed in the vertical plate (124), a fifth connecting hole corresponding to the fourth connecting hole (129) is formed in the web (112) of the link (11), and the vertical plate (124) is connected to the web (112) of the link (11) through a bolt.
5. The link fitting according to claim 1, characterized in that the portions of the ends of the webs (112) of the hangers (11) located outside the two vertical plates (124) are arranged in a semicircular shape.
6. A composite cross arm comprises a post insulator (2), a diagonal insulator (3), a wire-hanging fitting string (4) and a connecting fitting (1), and is characterized in that the connecting fitting (1) is the connecting fitting of any one of claims 1-5, the post insulator (2) is connected in a second connecting hole (125) of a sleeve part (12), the diagonal insulator (3) is connected with an ear plate (126) through a third connecting hole (127), and the wire-hanging fitting string (4) is connected in a first connecting hole (113).
7. The composite cross arm according to claim 6, wherein the cross-shaped connecting plate (5) is arranged at the end of the post insulator (2) connected with the transmission tower body, and the bolt hole (51) is arranged on the cross-shaped connecting plate (5).
8. A composite cross arm according to claim 6, characterized in that both ends of the diagonal insulator (3) are provided with U-shaped connectors (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121170949.8U CN215671430U (en) | 2021-05-28 | 2021-05-28 | Connecting hardware fitting and composite cross arm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121170949.8U CN215671430U (en) | 2021-05-28 | 2021-05-28 | Connecting hardware fitting and composite cross arm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215671430U true CN215671430U (en) | 2022-01-28 |
Family
ID=79973154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121170949.8U Expired - Fee Related CN215671430U (en) | 2021-05-28 | 2021-05-28 | Connecting hardware fitting and composite cross arm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215671430U (en) |
-
2021
- 2021-05-28 CN CN202121170949.8U patent/CN215671430U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220128 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |