CN112489899A - Self-locking connecting piece for insulator - Google Patents
Self-locking connecting piece for insulator Download PDFInfo
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- CN112489899A CN112489899A CN202011336638.4A CN202011336638A CN112489899A CN 112489899 A CN112489899 A CN 112489899A CN 202011336638 A CN202011336638 A CN 202011336638A CN 112489899 A CN112489899 A CN 112489899A
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- connecting piece
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/38—Fittings, e.g. caps; Fastenings therefor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/02—Suspension insulators; Strain insulators
- H01B17/06—Fastening of insulator to support, to conductor, or to adjoining insulator
- H01B17/10—Fastening of insulator to support, to conductor, or to adjoining insulator by intermediate link
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Abstract
The application belongs to the technical field of power grid distribution insulation connection structures, and particularly relates to an insulator self-locking connecting piece. The supporting shell is in an isosceles triangle shape, the bottom of the supporting shell is provided with an opening, a limiting plate surface is arranged in the middle of the opening, a first screw hole is formed in the middle of the limiting plate surface, and a through hole is formed in the end surface of the supporting shell, close to the vertex angle; the through hole penetrates through the supporting shell; the support shell is characterized by further comprising two double-hole connecting plates arranged on two sides of the support shell, the double-hole connecting plates are connected through two connecting bolt groups, the triangular connecting piece is arranged inside the support shell, and the compression spring is arranged between the T-shaped moving piece and the limiting plate surface. The application range of the insulator self-locking connecting piece is wide, the insulator self-locking connecting piece can be used for various medium-high voltage distribution electric connection structures, can be used together with various cup-type or rod-type insulators and other independent or combined insulator structures, and serves as connecting pieces between the insulators and electric poles and connecting structures at intervals and other positions between the insulators.
Description
Technical Field
The application belongs to the technical field of power grid distribution insulation connection structures, and particularly relates to an insulator self-locking connecting piece.
Background
The suspension hammer type insulator is commonly used in various middle-high voltage transmission connection and fixing occasions, has large and small sizes, is usually used as a connecting piece of a transmission line and an electric pole or the interphase isolation between the transmission lines in a series-parallel combination use mode, is generally in the form of single small and medium-sized insulator components for convenient use and transportation, and when in actual use, according to the requirements of ensuring span and insulation distance, a plurality of insulator components are utilized to be connected, matched and combined to form an integral large and medium-sized insulator to realize different functional requirements, but the tensioning degree and the actual insulation distance of the insulator after installation are often difficult to control due to the fact that the machining precision of the insulator is inconsistent, the size and the distance of the insulator after matching are difficult to control, the tensioning degree change after installation is difficult to control, the effect after installation is not as expected or needs to change and correct, the extra workload is increased, and the efficiency of insulator assembly and use is reduced.
Disclosure of Invention
The invention aims to provide an insulator self-locking connecting piece which can perform pre-tightening adjustment during installation of an insulator string, control the tension degree of an insulator after installation, perform self-adjustment control after installation and ensure the working stability of the insulator.
In order to achieve the purpose, the invention adopts the following technical scheme.
An insulator self-locking connecting piece comprises an isosceles triangle-shaped supporting shell 1, an opening is arranged at the bottom of the supporting shell 1, a limiting plate surface 1a is arranged in the middle of the opening,
a first screw hole 1b is formed in the middle of the limiting plate surface 1a, and a through hole is formed in the end surface of the supporting shell 1 close to the vertex angle; the through hole penetrates through the support shell 1;
the support device also comprises two double-hole connecting plates 2 arranged on two sides of the support shell 1, the double-hole connecting plates are connected through two connecting bolt groups, and one connecting bolt group 2a penetrates through the through hole to enable the double-hole connecting plates 2 on the two sides to clamp the support shell 1;
the support structure further comprises a triangular connecting piece 3 arranged inside the support shell 1, pin holes are respectively arranged at three corners of the triangular connecting piece 3, the pin holes at the top corner of the triangular connecting piece 3 are sleeved on the connecting bolt group 2a, and the pin holes at two corners of the triangular connecting piece 3 are respectively connected with a swing rod 5 through a connecting shaft 4;
one end of the swing rod 5 is swingably hinged on the triangular connecting piece 3 through a connecting shaft 4, the other end of the swing rod extends towards the bottom opening of the supporting shell 1, and the tail end of the swing rod is provided with an insulator connecting piece 6;
the device also comprises a T-shaped moving part 7 arranged between the two swing rods 5, wherein H-shaped rollers 8 are arranged on two sides of a cross arm at the top of the T-shaped moving part 7, the H-shaped rollers 8 abut against the swing rods 5, the swing rods 5 are clamped in the middle of the H-shaped rollers 8, and a threaded rod 9 with a head is arranged at a vertical arm of the T-shaped moving part 7;
the lower end of the headed screw 9 is screwed into the first screw hole 1b and penetrates through the first screw hole 1b, and one end of the headed screw 9, which penetrates out, is sleeved with an adjusting nut 10;
and the compression spring 12 is arranged between the T-shaped moving piece 7 and the limiting plate surface 1 a.
The self-locking connecting piece of the insulator is further improved and optimized, the cross section of the T-shaped moving piece 7 is U-shaped, a through hole 7a is formed in the bottom of the U-shaped moving piece, and a head screw 9 penetrates through the through hole 7a and then extends downwards; the top cross arm of the T-shaped movable part 7 is composed of U-shaped measuring vertical arms, and the H-shaped roller 8 is arranged between the two vertical arms.
The insulator self-locking connecting piece is further improved and optimized, the H-shaped idler wheels 8 are connected and fixed on two sides of a top cross arm of the T-shaped moving piece 7 through idler wheel shafts 8a, and shaft holes matched with the idler wheel shafts (8a) are respectively formed in the top cross arm of the T-shaped moving piece 7;
the height H1 of the roller shafts 8a at the two sides exceeds the height H1 of the inner cavity of the support shell 1, a linear guide groove 1b is arranged in the inner cavity of the support shell 1, the linear guide grooves 1b are respectively positioned at the positions of the roller shafts 8a at the two sides and extend to the bottom opening of the support shell 1 along the linear direction, and the roller shafts 8a at the two sides are respectively clamped in the linear guide grooves 1b at the upper side and the lower side.
The insulator self-locking connecting piece is further improved and optimized, the insulator connecting piece 6 is a U-shaped connecting piece, two arms of the insulator connecting piece 6 can be in cross connection with the tail end of the oscillating bar 5 in a swinging mode through the connecting rotating shaft 11, and the tail end of the oscillating bar 5 is provided with a rotating shaft hole for the connecting rotating shaft 11 to penetrate through; and a cross arm of the insulator connecting piece 6 is provided with a connecting screw hole 6 a.
The insulator self-locking connecting piece is further improved and optimized, the insulator self-locking connecting piece further comprises limiting screw holes arranged on two sides of the supporting shell 1, limiting pins 13 are arranged in the limiting screw holes, and the bottoms of the two limiting pins 13 are respectively abutted to the outer sides of the swing rods.
The beneficial effects are that:
the insulator self-locking connecting piece has a wide application range, can be used for various medium-high voltage distribution electric connection structures, can be matched with various independent or combined insulator structures such as cup-type or rod-type insulators and the like to be used, and is used as a connecting piece between the insulators and an electric pole and the like or a connecting structure at equal positions among the insulators;
this insulator auto-lock connecting piece simple structure is compact, high durability and convenient use, when having the fastening connection function of original connecting piece, utilize inner structure to realize the elasticity self recovery function that installation pretension and installation back are adjustable and function, compare with current connection structure, can utilize inside buffering to release can the structure guarantee that the insulator chain between connecting piece and the connecting piece can keep out the high strength collision in the twinkling of an eye that probably takes place and drag, can prevent the emergence of the limit damage that probably leads to because biology or apparatus accident striking contact etc. when daily use, can resume the structure cooperation when installing rapidly after the external force disappears in the twinkling of an eye simultaneously, the security and the stability that improve the insulator and use.
This device simple structure is light and handy, connecting piece easy dismounting itself, can one-man operation installation, and inner structure has self-resuming stability, need not additionally rectify the use, can utilize the convenient nimble stable opening angle of control pendulum rod of adjusting screw after having installed, and then the insulator interval when the control connecting piece is stable, the biggest opening angle then receives the restriction of support housing triangle angle, the cooperation is used and can be guaranteed to can be after the impact self-resuming to stable connection structure and fixed insulating clearance, need not revise once more.
Drawings
FIG. 1 is a front view of an insulator self-locking connector;
FIG. 2 is a front cross-sectional view of an insulator self-locking connector;
FIG. 3 is a bottom view of an insulator self-locking connector;
figure 4 is a side view of an insulator self-locking connector;
fig. 5 is a schematic view of the internal connection structure of the insulator self-locking connecting piece.
Detailed Description
The invention is described in detail below with reference to specific embodiments.
As shown in fig. 1 and 2, the insulator self-locking connecting piece is mainly used for connecting and fixing insulators or for an associated structure between the insulators.
The basic structure of the support comprises an isosceles triangle-shaped support shell 1, the bottom of the support shell 1 is provided with an opening, the middle of the opening is provided with a limiting plate surface 1a, the support shell 1 is mainly used for protecting an internal structure and preventing an internal swing structure from being separated, the support shell is generally manufactured by metal casting and can also be manufactured by adopting high-strength organic materials, the limiting plate surface 1a and the support shell are of an integral structure and can be integrally processed and also can be connected by welding and the like after being respectively processed, the middle of the limiting plate surface 1a is provided with a first screw hole 1b, and a through hole is formed in the end surface of the support shell 1, close to; the through hole penetrates through the support shell 1; the first screw hole is used for installing a rear stable adjusting screw rod, and the through hole is used for supporting and positioning.
As shown in fig. 1 and 4, the support device further comprises two double-hole connecting plates 2 arranged on two sides of the support shell 1, wherein the double-hole connecting plates 2 are connected through two connecting bolt groups, and one connecting bolt group 2a penetrates through the through hole to enable the double-hole connecting plates 2 on the two sides to clamp the support shell 1; the double-hole connecting plate is matched with the bolt group to form a common point-to-point connecting structure, the device is used as one of main stress components between the insulator and the electric pole tray fixing structure, the insulator is convenient to be connected with various types of contacts or structures, and meanwhile, the rear side bolt group and the through hole structure are matched to be used as a fixing support and a stress transmission component of a rear triangular connecting piece.
As shown in fig. 2 and 5, the support device further comprises a triangular connecting piece 3 arranged inside the support shell 1, pin holes are respectively arranged at three corners of the triangular connecting piece 3, the pin holes at the top corner of the triangular connecting piece 3 are sleeved on the connecting bolt group 2a, and the pin holes at two corners of the triangular connecting piece 3 are respectively connected with a swing rod 5 through a connecting shaft 4; the triangular connecting plate 3 divides the tension of the insulator to the swing rods 5 on two sides, and the symmetrical structure is matched with the self-stability of the triangular structure to enable the triangular structure to be capable of adjusting the inclination within a certain angle range in a small range, so that stress concentration is avoided, and the triangular connecting plate has certain self-adjusting capacity of impact stress. The double-swing-rod structure reduces the stress of the single rod, and meanwhile, the change of an included angle between the swing rods is utilized to realize the small adjustment of the distance between the insulators, and the unloading buffer and the self-recovery of instantaneous impact are realized by matching with the later compression spring structure, so that the structure has certain impact resistance and self-recovery stability.
One end of the swing rod 5 is swingably hinged on the triangular connecting piece 3 through a connecting shaft 4, the other end of the swing rod extends towards the bottom opening of the supporting shell 1, and the tail end of the swing rod is provided with an insulator connecting piece 6;
the insulator connecting piece 6 is a U-shaped connecting piece, two arms of the insulator connecting piece 6 can be in cross connection with the tail end of the oscillating bar 5 in a swinging mode through the connecting rotating shaft 11, and the tail end of the oscillating bar 5 is provided with a rotating shaft hole for the connecting rotating shaft 11 to penetrate through; and a cross arm of the insulator connecting piece 6 is provided with a connecting screw hole 6 a.
The device also comprises a T-shaped moving part 7 arranged between the two swing rods 5, wherein H-shaped rollers 8 are arranged on two sides of a cross arm at the top of the T-shaped moving part 7, the H-shaped rollers 8 abut against the swing rods 5, the swing rods 5 are clamped in the middle of the H-shaped rollers 8, and a threaded rod 9 with a head is arranged at a vertical arm of the T-shaped moving part 7;
the lower end of the headed screw 9 is screwed into the first screw hole 1b and penetrates through the first screw hole 1b, and one end of the headed screw 9, which penetrates out, is sleeved with an adjusting nut 10;
and the compression spring 12 is arranged between the T-shaped moving piece 7 and the limiting plate surface 1 a.
The T-shaped movable part 7 is U-shaped in section, a through hole 7a is formed in the bottom of the U-shaped part, and a head screw 9 extends downwards after penetrating through the through hole 7 a; the top cross arm of the T-shaped movable part 7 is composed of U-shaped measuring vertical arms, and the H-shaped roller 8 is arranged between the two vertical arms.
As shown in fig. 2, 3 and 5, the H-shaped rollers 8 are connected and fixed to two sides of a top cross arm of the T-shaped movable member 7 through roller shafts 8a, and shaft holes matched with the roller shafts 8a are respectively formed in the top cross arm of the T-shaped movable member 7;
in order to control the moving track of the T-shaped moving member 7, prevent the internal structure from being locked, and ensure the two-sided motion to be consistent and the stress balance when the structure is moved, in this embodiment, the roller path is controlled by the structure in the guide groove, specifically, the height H1 of the roller shaft 8a exceeds the height H1 of the inner cavity of the support housing 1, a linear guide groove 1b is provided in the inner cavity of the support housing 1, the linear guide grooves 1b are respectively located at the positions of the roller shafts 8a at the two sides and extend to the bottom opening of the support housing 1 along the linear direction, and the roller shafts 8a at the two sides are respectively clamped in the linear guide grooves 1 b.
In particular, in order to further limit the limit position of the swing rod, the present embodiment further includes limit screw holes disposed on two sides of the supporting housing 1, the limit screw holes are provided with limit pins 13, and the bottoms of the two limit pins 13 respectively abut against the outer sides of the swing rod.
When the device is assembled, firstly, two swing rods 5 and a triangular connecting piece 3 are connected through a connecting shaft 4 and then are placed into a supporting shell from an opening at the bottom, then a T-shaped moving piece 7 and a headed screw 9 are placed, the position of the T-shaped moving piece 7 is adjusted, a roller 8a at one side is installed, a roller shaft 8a is clamped into a linear guide groove 1b, the threaded end part of the headed screw 9 extends into a through hole 7a, a roller at the other side is installed and clamped into a corresponding linear guide groove after the position of the T-shaped moving piece 7 is adjusted, a compression spring 12 is installed, the headed screw 9 is rotated to be screwed into a first screw hole 1b and sleeved with an adjusting nut 10, and after the position of the triangular connecting piece 3 is adjusted, a connecting bolt group 2a is used for connecting two-side double-hole connecting plates 2, the supporting shell 1 and the triangular; the insulator connecting piece 6 is connected with the swing rod 5 through a rotating shaft;
when the device is used, the adjusting nut 10 is rotated firstly to compress and tighten the compression spring 12 as much as possible, the swing rods 5 on the two sides and the insulator connecting pieces 6 are connected with a duplex insulator or a single insulator, connecting pieces or structures at the two ends of the insulator are adjusted, the insulators are guaranteed to be stretched and fixed relatively fully, the adjusting nut is rotated after the device is installed, the headed screw rod is moved towards the inner side, the compressed spring extends and pushes the T-shaped moving part 7 to move towards the inner side, the insulator is stretched and pre-tightened, the stretching distance and the pre-tightening force are controlled by controlling the position of the head of the headed screw rod 9, when the power transmission line receives external force impact and pulls the insulator, instant impact force can be absorbed by the spring, the insulator is prevented from being broken due to the.
It should be noted that the ultimate bearing capacity of the device is influenced by the stress of the first connecting shaft and the rod structure, and is smaller than that of a linear traction structure, so that the device is generally only suitable for the connection between power transmission networks or structural members within a medium distance, and the stability and the bearing capacity of the device should be tested by stress when the device is used for long-distance power transmission network connection and large and ultra-large insulators, and actual test data is specifically used as reference.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (5)
1. An insulator self-locking connecting piece is characterized by comprising an isosceles triangle-shaped supporting shell (1), wherein the bottom of the supporting shell (1) is provided with an opening, the middle of the opening is provided with a limiting plate surface (1a),
a first screw hole (1b) is formed in the middle of the limiting plate surface (1a), and a through hole is formed in the end surface of the supporting shell (1) close to the vertex angle; the through hole penetrates through the supporting shell (1);
the support shell is characterized by further comprising two double-hole connecting plates (2) arranged on two sides of the support shell (1), wherein the double-hole connecting plates are connected through two connecting bolt groups, and one connecting bolt group (2a) penetrates through the through hole to enable the double-hole connecting plates (2) on the two sides to clamp the support shell (1);
the support is characterized by further comprising a triangular connecting piece (3) arranged inside the support shell (1), pin holes are formed in three corners of the triangular connecting piece (3) respectively, the pin holes in the vertex angle of the triangular connecting piece (3) are sleeved on the connecting bolt group (2a), and the pin holes in two corners of the triangular connecting piece (3) are connected with swing rods (5) through connecting shafts (4) respectively;
one end of the swing rod (5) is swingably hinged on the triangular connecting piece (3) through the connecting shaft (4), the other end of the swing rod extends towards the opening at the bottom of the supporting shell (1), and the tail end of the swing rod is provided with an insulator connecting piece (6);
the device is characterized by further comprising a T-shaped moving part (7) arranged between the two swing rods (5), wherein H-shaped rollers (8) are arranged on two sides of a cross arm at the top of the T-shaped moving part (7), the H-shaped rollers (8) abut against the swing rods (5), the swing rods (5) are clamped in the middle of the H-shaped rollers (8), and a threaded rod (9) with a head is arranged at a vertical arm of the T-shaped moving part (7);
the lower end of the headed screw (9) is screwed into the first screw hole (1b) and penetrates through the first screw hole (1b), and one end, penetrating out of the headed screw (9), is sleeved with an adjusting nut (10);
the device also comprises a compression spring (12) arranged between the T-shaped moving piece (7) and the limiting plate surface (1 a).
2. The insulator self-locking connecting piece according to claim 1, wherein the cross section of the T-shaped movable piece (7) is U-shaped, a through hole (7a) is formed in the bottom of the U-shaped movable piece, and the headed screw (9) extends downwards after passing through the through hole (7 a); the top cross arm of the T-shaped moving piece (7) is composed of U-shaped vertical arms, and the H-shaped roller (8) is arranged between the two vertical arms.
3. The insulator self-locking connecting piece according to claim 2, characterized in that the H-shaped rollers (8) are connected and fixed on two sides of a top cross arm of the T-shaped moving piece (7) through roller shafts (8a), and shaft holes matched with the roller shafts (8a) are respectively arranged on the top cross arm of the T-shaped moving piece (7);
height H of roller shafts (8a) (8a)1Exceeds the height h of the inner cavity of the supporting shell (1)1The inner cavity of the support shell (1) is internally provided with a linear guide groove (1b), the linear guide groove (1b) extends to the bottom opening of the support shell (1) along the linear direction, and the two ends of the roller shaft (8a) can be slidably clamped into the linear guide grooves (1b) on the upper side and the lower side respectively.
4. The insulator self-locking connecting piece according to claim 1, wherein the insulator connecting piece (6) is a U-shaped connecting piece, two arms of the insulator connecting piece (6) are in cross connection with the tail end of the swing rod (5) in a swinging mode through a connecting rotating shaft (11), and a rotating shaft hole for the connecting rotating shaft (11) to penetrate through is formed in the tail end of the swing rod (5); and a cross arm of the insulator connecting piece (6) is provided with a connecting screw hole (6 a).
5. The insulator self-locking connecting piece according to claim 1, further comprising limiting screw holes arranged at two sides of the supporting shell 1, wherein limiting pins (13) are arranged in the limiting screw holes, and the bottoms of the two limiting pins (13) respectively abut against the outer sides of the swing rods (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011336638.4A CN112489899B (en) | 2020-11-25 | 2020-11-25 | Self-locking connecting piece for insulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011336638.4A CN112489899B (en) | 2020-11-25 | 2020-11-25 | Self-locking connecting piece for insulator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112489899A true CN112489899A (en) | 2021-03-12 |
| CN112489899B CN112489899B (en) | 2022-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011336638.4A Active CN112489899B (en) | 2020-11-25 | 2020-11-25 | Self-locking connecting piece for insulator |
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| Country | Link |
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| CN (1) | CN112489899B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3005866A (en) * | 1959-04-27 | 1961-10-24 | Fraser Hugh | Means for connecting overhead high tension electrical cables to the insulators of transmission towers |
| FR2698478A1 (en) * | 1992-11-23 | 1994-05-27 | Soule Sa | Steelwork support attachment for medium and high voltage overhead electricity line suspension insulator - uses U=bolt fixed under cross-arm to support top-cap of rigid suspension insulator, allowing limited lateral swing |
| CN102290745A (en) * | 2011-09-01 | 2011-12-21 | 山东电力集团公司超高压公司 | Live working strain front-end clamping tool for fast locking-type lead wire of front strain clamp |
| CN207612031U (en) * | 2017-11-08 | 2018-07-13 | 江西电力职业技术学院 | Porcelain insulator string bracket |
| CN111641167A (en) * | 2020-06-13 | 2020-09-08 | 胡梦婷 | Power transmission line connection fitting |
| WO2020220206A1 (en) * | 2019-04-29 | 2020-11-05 | Abb Power Grids Switzerland Ag | Insulation supporting assembly and gas-insulated transmission line |
-
2020
- 2020-11-25 CN CN202011336638.4A patent/CN112489899B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3005866A (en) * | 1959-04-27 | 1961-10-24 | Fraser Hugh | Means for connecting overhead high tension electrical cables to the insulators of transmission towers |
| FR2698478A1 (en) * | 1992-11-23 | 1994-05-27 | Soule Sa | Steelwork support attachment for medium and high voltage overhead electricity line suspension insulator - uses U=bolt fixed under cross-arm to support top-cap of rigid suspension insulator, allowing limited lateral swing |
| CN102290745A (en) * | 2011-09-01 | 2011-12-21 | 山东电力集团公司超高压公司 | Live working strain front-end clamping tool for fast locking-type lead wire of front strain clamp |
| CN207612031U (en) * | 2017-11-08 | 2018-07-13 | 江西电力职业技术学院 | Porcelain insulator string bracket |
| WO2020220206A1 (en) * | 2019-04-29 | 2020-11-05 | Abb Power Grids Switzerland Ag | Insulation supporting assembly and gas-insulated transmission line |
| CN111641167A (en) * | 2020-06-13 | 2020-09-08 | 胡梦婷 | Power transmission line connection fitting |
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| Publication number | Publication date |
|---|---|
| CN112489899B (en) | 2022-05-27 |
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