CN218242797U - Tool for live replacement of middle-phase bridge-shaped cross arm V-shaped string insulator in 500kV line - Google Patents
Tool for live replacement of middle-phase bridge-shaped cross arm V-shaped string insulator in 500kV line Download PDFInfo
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- CN218242797U CN218242797U CN202222768149.7U CN202222768149U CN218242797U CN 218242797 U CN218242797 U CN 218242797U CN 202222768149 U CN202222768149 U CN 202222768149U CN 218242797 U CN218242797 U CN 218242797U
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Abstract
The utility model discloses an instrument of insulator chain is hung to bridge-shaped cross arm V in 500kV circuit is changed to electrification, including fixture, lead screw adjusting part and the wire lifting hook component that connects gradually. The fixture comprises a lead screw hanging plate and a fixed plate, wherein the lead screw hanging plate is arranged on the front side of the vertical yoke plate in the middle position above the middle-phase bridge-shaped cross arm insulator string, the fixed plate is arranged on the rear side of the vertical yoke plate, and the lead screw hanging plate and the fixed plate are fixedly installed through a connecting component penetrating through a reserved mounting hole in the vertical yoke plate. The installation fixture of the vertical clamping vertical yoke plate installation mode of the fixture can be installed quickly and safely, and the problem that the existing clamping and hanging type fixture cannot be installed on the bridge-shaped cross arm is well solved. The lead screw can be limited and cannot rotate through the lead screw hanging plate, the nut seat can be rotated to realize stable lifting of the lead screw, the installation position of the wire lifting hook component on the pull rod can be selected according to the height of a middle-phase wire, and the position of the wire lifting hook component is adjusted through the lead screw, so that the wire is clamped by the wire clamping groove of the wire lifting hook component, and the wire lifting hook is convenient to use and has universality.
Description
Technical Field
The utility model belongs to transmission line live working instrument ware field specifically is an instrument that insulator chain was hung to bridge-shaped cross arm V in 500kV circuit is changed to electrified.
Background
Live working is an important means for ensuring continuous and reliable supply of electric power, and the significance of live working is great. At present, the iron tower of the 500kV transmission line has two types of cross arms for mounting a middle-phase V-shaped suspension insulator string. One is a parallel cross arm as shown in fig. 1, and the other is a bridge cross arm as shown in fig. 2. When the insulator string is replaced by the parallel cross arm mounting tool, the clamping apparatus shown in fig. 3 is adopted, the clamping apparatus can be clamped and hung on cross arm tower material angle steel above the middle position of the V-shaped hanging insulator string from top to bottom through the clamping groove of the clamping apparatus, and then the clamping apparatus is connected with other structural members of the tool. And the tower material above the middle position of the bridge-shaped cross arm corresponding to the V-shaped hanging insulator string is shown in figure 4, so the fixture shown in figure 3 cannot be installed, and when the middle-phase cross arm is the bridge-shaped cross arm, the replacement work of the insulator string cannot be carried out by the existing tool after the middle-phase V-shaped hanging insulator string undergoes insulator self-explosion.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an insulator chain is hung for the V of bridge shape cross arm installation and is changed instrument with electricity to applicable well cross arm in 500kV circuit.
The utility model provides an instrument of insulator chain is hung to bridge-shaped cross arm V in 500kV circuit is changed to this kind of electrified, including fixture, lead screw adjusting part and the wire lifting hook component that connects gradually. The fixture comprises a lead screw hanging plate and a fixed plate, wherein the lead screw hanging plate is arranged on the front side of the vertical connecting plate in the middle position above the middle-phase bridge-shaped cross arm insulator string, and the fixed plate is arranged on the rear side of the vertical connecting plate.
In one embodiment of the above tool, the screw rod hanging plate is a T-shaped plate, two ends of a wing plate of the screw rod hanging plate are symmetrically provided with connecting member mounting holes penetrating through the thickness of the wing plate, and a central plane of the thickness of a web plate of the screw rod hanging plate is provided with a U-shaped through groove; the fixed plate is a rectangular plate, and a connecting component mounting hole corresponding to the screw rod hanging plate is formed in the fixed plate.
In an embodiment of the tool, two sides of the U-shaped through groove are symmetrically provided with U-shaped limiting grooves.
In one embodiment of the above tool, the connecting member is a bolt provided with a nut, or a connecting shaft provided with a limit pin.
In one embodiment of the above tool, the lead screw adjusting assembly includes a lead screw, a nut seat and a pull rod, the nut seat is connected to the lead screw, the upper end of the pull rod is provided with a U-shaped chuck, the lower end of the lead screw is provided with a rectangular plug-in connector, and the rectangular plug-in connector is arranged in the U-shaped chuck and then connected through a bolt provided with a nut.
In one embodiment of the tool, the outer wall of the nut seat is provided with a forcing rod.
In an embodiment of the above tool, two sides of a diameter surface of the screw rod are symmetrically provided with outward extending limiting blocks/limiting rods.
In an embodiment of the tool, the lower portion of the pull rod is provided with a plurality of radial through holes arranged up and down.
In an embodiment of the above tool, the wire lifting hook member includes a V-shaped linking arm and a wire lifting hook symmetrically connected to the two side arms of the V-shaped linking arm, a connecting sleeve is disposed at a central position of the V-shaped linking arm, and wire clamping grooves are respectively disposed at the top and the bottom of the wire lifting hook.
In one embodiment of the tool, when the screw rod adjusting assembly is assembled with the front vertical clamping plate, the screw rod is arranged in the U-shaped through groove, the limiting block/limiting rod is arranged in the U-shaped limiting groove, and the lower end of the nut seat is positioned on the upper side of the web plate of the screw rod hanging plate; when the wire lifting hook component is assembled with the screw rod adjusting component, the connecting sleeve is sleeved on the pull rod and is connected with the pull rod through a bolt which penetrates through the radial through hole and is matched with a nut.
The utility model discloses a vertical yoke plate of well cross arm intermediate position department in the vertical centre gripping of fixture, the horizontally connect component installation through reserving the mounting hole on passing vertical yoke plate is fixed, and lead screw adjusting part is connected to the rethread fixture, connects through lead screw adjusting part and carries the line hook component. The vertical clamping vertical yoke plate mounting mode of the fixture can quickly and safely mount the fixture, and the problem that the conventional clamping hanging type fixture cannot be mounted on the bridge-shaped cross arm is well solved.
Drawings
Fig. 1 is a schematic diagram of an iron tower with middle-phase cross arms as parallel cross arms.
Fig. 2 is a schematic diagram of an iron tower with a middle-phase cross arm in a bridge shape.
Fig. 3 is a schematic structural view of a conventional jig.
Fig. 4 is a partially enlarged schematic view of a tower material object at the middle position of the bridge-shaped cross arm.
Fig. 5 is a schematic structural diagram of an embodiment of the present invention.
Fig. 6 is an enlarged schematic view of the fixture of fig. 5.
Fig. 7 is an enlarged view of a portion a in fig. 5.
Detailed Description
As shown in fig. 5 to 7, the tool for live replacement of an insulator string on a bridge-shaped cross arm V in a 500kV line disclosed in this embodiment includes a fixture 1, a screw rod 2, a nut seat 3, a pull rod 4 and a wire lifting hook member 5.
The fixture 1 comprises a lead screw hanging plate 11, a fixing plate 12, a bolt 13 and a nut 14.
The screw rod hanging plate 11 is a T-shaped plate, a U-shaped through groove 111 is arranged on the central plane of the thickness of a web plate, and U-shaped limiting grooves 112 are symmetrically arranged on two sides of the U-shaped through groove.
The fixed plate 12 is a rectangular plate.
When the screw rod hanging plate 11 and the fixing plate 12 are assembled, the screw rod hanging plate and the fixing plate are connected through the bolt 13 and locked through the nut 14 after the wing plates are opposite.
Two sides of a diameter surface at the top of the screw rod 2 are symmetrically provided with outwards extending limiting blocks/limiting rods (the middle part in the figure is not shown).
The upper part of the screw rod 2 corresponding to the limiting block/limiting rod is connected with a nut seat 3.
The lower end of the screw rod 2 is provided with a rectangular plug 21.
The outer wall of the nut seat 3 is provided with a forcing rod 31.
The upper end of the pull rod 4 is provided with a U-shaped clamp 41, and the lower section of the pull rod is provided with a plurality of radial through holes which are vertically distributed.
When the screw rod 2 is assembled with the pull rod 4, the rectangular plug 21 is placed in the U-shaped clamp 41 and then connected by a bolt (not shown) provided with a nut.
The wire lifting hook component 5 comprises a V-shaped connecting arm 51 and a wire lifting hook 52 symmetrically connected with the two side arms of the V-shaped connecting arm 51, a connecting sleeve 511 is arranged at the center of the V-shaped connecting arm 51, and wire clamping grooves are respectively arranged at the top and the bottom of the wire lifting hook 52, namely the wire lifting hook is provided with four wire clamping grooves, so that four-split wires can be lifted simultaneously.
When the wire lifting hook member 5 is assembled with the pull rod 4, the connecting sleeve 511 is sleeved on the pull rod 4, a radial through hole with a proper height is selected, and then the wire lifting hook member is connected with the pull rod through a bolt matched with a nut. Fig. 1 is a schematic view showing a state that the thread lifting hook member is just sleeved on the pull rod, and the mounting hole of the connecting sleeve and the radial through hole on the pull rod are not aligned yet.
Before the tool is used, the screw 2, the nut holder 3, the pull rod 4 and the wire-lifting hook member 5 can be assembled into an integral piece, and the clamp is not assembled with the integral piece.
When the connecting plate is used, the screw rod hanging plate and the fixing plate of the fixture are arranged on two sides of the connecting plate at the middle position above the middle-phase bridge-shaped cross arm insulator string respectively, the mounting holes in the screw rod hanging plate and the fixing plate are aligned with the mounting holes reserved in the connecting plate, and then bolts sequentially penetrate through the screw rod hanging plate, the connecting plate and the fixing plate and are locked through nuts. That is, the fixture is first connected to the yoke plate by bolts, and bolt mounting holes are reserved on the yoke plate in fig. 4.
Then assembling the assembly integral piece of the screw rod, the nut seat, the pull rod and the wire lifting hook member with a fixture: the screw rod is arranged in the U-shaped through groove on the screw rod hanging plate, the limiting blocks/limiting rods on two sides of the screw rod are arranged in the U-shaped limiting groove, and meanwhile the bottom surface of the nut seat is arranged on the top surface of the U-shaped through groove. The rotation of the screw rod is limited, so that the lifting of the screw rod relative to the nut seat can be realized by rotating the nut seat.
The nut seat is rotated to lead the pull rod to descend so as to adjust the height position of the wire lifting hook component, and four wire clamping grooves of the nut seat are respectively used for clamping the quadrifid conductors;
the nut seat is rotated reversely to enable the pull rod to rise, so that the wire lifting hook component lifts the wire upwards, the vertical load of the middle phase wire is transferred to the tool, and the insulator string is not stressed any more;
and separating the insulator string from the hanging point of the lead for replacement.
And after the insulator string is replaced, the fixture is detached from the connecting plate, and the tool is recovered for later use.
The tool is fixedly installed through the horizontal connecting component through the vertical connecting plate at the middle position of the middle phase cross arm in vertical clamping, the clamping apparatus is connected with the screw rod adjusting component, and the screw rod adjusting component is connected with the wire lifting hook component. The vertical clamping vertical yoke plate mounting mode of the fixture can quickly and safely mount the fixture, and the problem that the conventional clamping hanging type fixture cannot be mounted on the bridge-shaped cross arm is well solved. The lead screw of the lead screw adjusting assembly can be limited and cannot rotate through the lead screw hanging plate, the nut seat on the lead screw can be guaranteed to rotate to realize stable lifting of the lead screw, a plurality of radial through holes are formed in the pull rod, the wire lifting hook component can be installed in the radial through holes in the corresponding height positions according to the height of the middle phase lead, and the position of the wire lifting hook component is adjusted through the lead screw, so that a wire clamping groove of the wire lifting hook component clamps the lead, and the lead screw adjusting assembly is convenient to use and has universality.
Claims (10)
1. The utility model provides a change instrument that insulator string was hung to bridge shape cross arm V in 500kV circuit with electricity, includes fixture, lead screw adjusting part and the wire lifting hook component that connects gradually, its characterized in that: the fixture comprises a lead screw hanging plate and a fixed plate, wherein the lead screw hanging plate is arranged on the front side of the vertical connecting plate in the middle position above the middle-phase bridge-shaped cross arm insulator string, and the fixed plate is arranged on the rear side of the vertical connecting plate.
2. The tool for live replacement of the bridge-shaped cross arm V-string insulator string in the 500kV line according to claim 1, wherein: the screw rod hanging plate is a T-shaped plate, connecting component mounting holes penetrating through the thickness of the screw rod hanging plate are symmetrically formed in two ends of a wing plate of the screw rod hanging plate, and a U-shaped through groove is formed in the central plane of the thickness of a web plate of the screw rod hanging plate; the fixed plate is a rectangular plate, and a connecting component mounting hole corresponding to the lead screw hanging plate is formed in the fixed plate.
3. The tool for live replacement of the bridge-shaped cross arm V-string insulator string in the 500kV line as set forth in claim 2, wherein: u-shaped limiting grooves are symmetrically arranged on two sides of the U-shaped through groove.
4. The tool for live replacement of the bridge-shaped cross arm V-shaped insulator string in the 500kV line according to claim 1, characterized in that: the connecting component is a bolt matched with a nut or a connecting shaft matched with a limit pin.
5. The tool for live replacement of the bridge-shaped cross arm V-string insulator string in the 500kV line according to claim 3, wherein: the screw rod adjusting assembly comprises a screw rod, a nut seat and a pull rod, the nut seat is connected to the screw rod, a U-shaped chuck is arranged at the upper end of the pull rod, a rectangular plug-in connector is arranged at the lower end of the screw rod, and the rectangular plug-in connector is arranged in the U-shaped chuck and then connected through a bolt provided with a nut.
6. The tool for live replacement of the bridge-shaped cross arm V-string insulator string in the 500kV line according to claim 5, wherein: and a force applying rod is arranged on the outer wall of the nut seat.
7. The tool for live replacement of the bridge-shaped cross arm V-shaped insulator string in the 500kV line according to claim 5, characterized in that: and two sides of a diameter surface of the screw rod are symmetrically provided with outwards extending limiting blocks/limiting rods.
8. The tool for live replacement of the bridge-shaped cross arm V-string insulator string in the 500kV line as set forth in claim 7, wherein: the lower part of the pull rod is provided with a plurality of radial through holes which are vertically distributed.
9. The tool for live replacement of the bridge-shaped cross arm V-string insulator string in the 500kV line according to claim 8, wherein: the wire lifting hook component comprises a V-shaped connecting arm and a wire lifting hook, wherein the two side arms of the V-shaped connecting arm are symmetrically connected with each other, a connecting sleeve is arranged at the center of the V-shaped connecting arm, and wire clamping grooves are respectively formed in the top and the bottom of the wire lifting hook.
10. The tool for live replacement of the bridge-shaped cross arm V-string insulator string in the 500kV line as claimed in claim 9, wherein: when the screw rod adjusting assembly is assembled with the vertical clamping plate on the front side, the screw rod is arranged in the U-shaped through groove, the limiting block/limiting rod is arranged in the U-shaped limiting groove, and the lower end of the nut seat is positioned on the upper side of the web plate of the screw rod hanging plate; when the wire lifting hook component is assembled with the screw rod adjusting component, the connecting sleeve is sleeved on the pull rod and is connected with the pull rod through a bolt which penetrates through the radial through hole and is matched with a nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222768149.7U CN218242797U (en) | 2022-10-20 | 2022-10-20 | Tool for live replacement of middle-phase bridge-shaped cross arm V-shaped string insulator in 500kV line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222768149.7U CN218242797U (en) | 2022-10-20 | 2022-10-20 | Tool for live replacement of middle-phase bridge-shaped cross arm V-shaped string insulator in 500kV line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218242797U true CN218242797U (en) | 2023-01-06 |
Family
ID=84669862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222768149.7U Active CN218242797U (en) | 2022-10-20 | 2022-10-20 | Tool for live replacement of middle-phase bridge-shaped cross arm V-shaped string insulator in 500kV line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218242797U (en) |
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2022
- 2022-10-20 CN CN202222768149.7U patent/CN218242797U/en active Active
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