CN215989995U - Auxiliary device is changed to extra-high voltage strain insulator tower tip vase - Google Patents
Auxiliary device is changed to extra-high voltage strain insulator tower tip vase Download PDFInfo
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- CN215989995U CN215989995U CN202122337821.2U CN202122337821U CN215989995U CN 215989995 U CN215989995 U CN 215989995U CN 202122337821 U CN202122337821 U CN 202122337821U CN 215989995 U CN215989995 U CN 215989995U
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Abstract
An auxiliary device for replacing an insulator at the end part of an extra-high voltage strain tower comprises an M-arc yoke plate and parallel hanging plates, wherein the M-arc yoke plate is provided with two M-arc yoke plates which are arranged in an up-down symmetrical mode, the M-arc yoke plate is provided with a plurality of bolt holes for connection, one end of each parallel hanging plate is fixed between the two M-arc yoke plates and is connected through a high-strength bolt, the other end of each parallel hanging plate extends out of the M-arc yoke plate, and the extending end of each parallel hanging plate is provided with a construction hole; the parallel hanging plate is provided with four parallel plates which are sequentially arranged at the end part of the inner arc of the M-arc connecting plate. By utilizing the porcelain insulator special fixture and the auxiliary device, the porcelain insulator special fixture can be effectively connected with the auxiliary device, the porcelain insulator special fixture is convenient and fast to install and disassemble, the construction safety risk and the labor intensity are reduced, the investment of manpower and material resources is reduced, and the construction period is shortened.
Description
Technical Field
The utility model belongs to the field of power transmission line construction, and particularly relates to an auxiliary device for replacing porcelain bottles at the end parts of an extra-high voltage strain tower.
Background
The ultra-high voltage direct current transmission line has the characteristics of high voltage grade, long transmission distance, high construction technical requirements and the like, in the engineering (Henan 2 standard section) of the high voltage direct current transmission line with +/-800 kilovolts from Shaanxi to Hubei, a strain tower uses 550kN suspension type porcelain bottle quadruple string double-hanging-point strain insulator strings, each string is 89 porcelain bottles, the length of the string is 25m, the dead weight of the strain insulator string is 127kN, a lead adopts 6 XJL 1/G2A-1250/100 type steel core aluminum stranded wires, and the operation tension of each phase of the lead is up to 468 kN.
Because of factors such as external environment, improper construction, cause the tip vase damage of having installed, influence transmission line's fortune dimension safety, it is very necessary to need to design a tip vase and change auxiliary device.
At present, a mature special fixture is replaced for a tension porcelain bottle, but because the position of the porcelain bottle at the end part of an extra-high voltage line is special and the stress is large, the porcelain bottle close to the end part of a lead wire does not have a reliable supporting point for the fixture, the special porcelain bottle fixture cannot be fixed, and in the actual process of the prior art, a method for replacing the porcelain bottle after tightening an entire-phase porcelain bottle string is mostly adopted by a lever block, and the prior art has the following defects:
the method has the advantages of high material and labor consumption and long replacement period; when the porcelain insulator at the end part is replaced, 6 sets of 12t hand-pulling hoists, 12 GJ-180 adjacent anchor ropes, phi 24 steel wire rope sleeves, 1 set of working platform, 1 winch, 300m grinding ropes, 5 tool pulleys and the like are needed; at least more than 8 overhead workers and 5 ground auxiliary workers; 6 sets of hand-operated hoists need to be stressed synchronously and evenly in the process of tightening the porcelain insulator string, a plurality of points need to be arranged on the whole string of porcelain insulators after the porcelain insulators are loosened and reliably fixed on the anchor rope, the porcelain insulators are prevented from falling, and according to the previous construction experience, 1.5 days is needed for the replacement of the single porcelain insulator at the end part.
The device has the advantages of multiple high-altitude personnel, high labor intensity, long stress time of tools and instruments and high safety risk; according to design drawing parameters, the operating tension of the single-phase lead is up to 468kN, the dead weight of the tension string is 127kN, the over-traction of the lead, the dead weight of the porcelain insulator string and the unbalanced stress of the tools and the instruments are considered comprehensively, and the stress of 6 sets of 12t hand-operated chain blocks is close to the rated load.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of overcoming the defects of the prior art and provides an auxiliary device for replacing a porcelain insulator at the end part of a tension tower of an extra-high voltage direct current line, which has the advantages of low construction safety risk and cost and short construction period.
The technical scheme adopted by the utility model for solving the technical problems is as follows:
an auxiliary device for replacing an insulator at the end part of an extra-high voltage strain tower comprises an M-arc yoke plate and parallel hanging plates, wherein the M-arc yoke plate is provided with two M-arc yoke plates which are arranged in an up-down symmetrical mode, the M-arc yoke plate is provided with a plurality of bolt holes for connection, one end of each parallel hanging plate is fixed between the two M-arc yoke plates and is connected through a high-strength bolt, the other end of each parallel hanging plate extends out of the M-arc yoke plate, and the extending end of each parallel hanging plate is provided with a construction hole; the parallel hanging plate is provided with four parallel plates which are sequentially arranged at the end part of the inner arc of the M-arc connecting plate.
Further, the M-arc-shaped connecting plates are arranged on the upper surface and the lower surface of the triangular connecting plate close to the end porcelain insulator and are connected through high-strength bolts.
Furthermore, the special porcelain insulator fixture is connected with the four parallel hanging plates through four high-strength bolts by using a gear lead screw.
Furthermore, the thickness of the M arc-shaped connecting plate and the thickness of the parallel hanging plate are both 20-25mm, and Q345 low-alloy high-strength steel is adopted.
By utilizing the porcelain insulator special fixture and the auxiliary device, the porcelain insulator special fixture can be effectively connected with the auxiliary device, the porcelain insulator special fixture is convenient and fast to install and disassemble, the construction safety risk and the labor intensity are reduced, the investment of manpower and material resources is reduced, and the construction period is shortened.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic view of an M-arc yoke plate according to the embodiment of FIG. 1;
FIG. 3 is a schematic view of the parallel hanging plate in the embodiment shown in FIG. 1;
FIG. 4 is a diagram illustrating the effect of the present invention;
fig. 5 is an enlarged view of a portion a in fig. 4.
In the figure: 1-M arc yoke plate, 2-parallel link plate, 3-gear lead screw, 4-special fixture of vase, 5-triangle yoke plate, 6-tip vase, 7-equalizer ring, 8-shielding ring.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Referring to the attached drawings 1-5, the hanging plate comprises M arc-shaped connecting plates 1 and parallel hanging plates 2, the number of the M arc-shaped connecting plates 1 is two, the two M arc-shaped connecting plates 1 are of a vertically symmetrical arrangement structure, the M arc-shaped connecting plates 1 are provided with a plurality of bolt holes, and the two M arc-shaped connecting plates 1 which are vertically symmetrical are connected and fixed through four bolts.
One end of the parallel hanging plate 2 is fixed in the middle of the two M-arc-shaped connecting plates 1, the other end of the parallel hanging plate extends out of the M-arc-shaped connecting plates 1 through high-strength bolts, and the parallel hanging plate 2 is parallel to each other and is provided with four blocks which are sequentially arranged at the end parts of the inner arcs of the M-arc-shaped connecting plates 1. The extending end of the parallel hanging plate 2 is provided with a construction hole.
In the embodiment, the thickness of the M-arc yoke plate 1 and the thickness of the parallel hanging plate 2 are both 20-25mm, and Q345 low-alloy high-strength steel is adopted.
The use method of the auxiliary device for replacing the porcelain insulator at the end part of the extra-high voltage strain tower in the embodiment is as follows:
in fig. 4, M-arc type yoke plates 1 are respectively mounted on the upper and lower surfaces of a triangular yoke plate 5 adjacent to an end portion porcelain bottle, and are connected by two M38 high-strength bolts. Four parallel hanging plates 2 are arranged between the upper M-arc yoke plate 1 and the lower M-arc yoke plate 1 and are connected by four M20 high-strength bolts to form supporting points of the special porcelain bottle fixture 4. And a special porcelain bottle fixture 4 is arranged at the position close to the 4 th porcelain bottle steel anchor at the end part, and two sets of special fixtures 4 are needed for two strings of porcelain bottles in order to ensure the balanced stress of the auxiliary device. The special porcelain insulator fixture 4 is connected with the four parallel hanging plates 2 through four M20 high-strength bolts by using the gear lead screw 3.
The early preparation work for replacing the end porcelain insulator 6 is arranged, and if the M-arc yoke plate 1 is installed, the equalizing ring 7 and the shielding ring 8 need to be detached.
4 overhead personnel slowly tighten the gear screw rod 3 to ensure that the stress of the two strings of porcelain bottles is balanced.
By changing the lax back of vase, 1 people hold up the vase and extract the vase pin, with the 6 serial takeouts of damaged tip vase from the vase, adopt the instrument rope to fall to ground, insert the vase draw-in groove with new vase during the change, install the vase pin.
Slowly loosening the gear screw 3, stressing the porcelain insulator string, and removing the special porcelain insulator clamp 4, the auxiliary device and the second safety rope.
The porcelain insulator special fixture 4 can be effectively connected with the auxiliary device, is convenient and fast to install and disassemble, reduces the construction safety risk and labor intensity, reduces the investment of manpower and material resources, and shortens the construction period.
Various modifications and variations of the present invention may be made by those skilled in the art, and they are also within the scope of the present invention provided they are within the scope of the claims of the present invention and their equivalents.
What is not described in detail in the specification is prior art that is well known to those skilled in the art.
Claims (4)
1. An auxiliary device for replacing an insulator at the end part of an extra-high voltage strain tower is characterized by comprising an M-arc yoke plate and parallel hanging plates, wherein the M-arc yoke plate is provided with two M-arc yoke plates which are arranged vertically and symmetrically, the M-arc yoke plate is provided with a plurality of bolt holes for connection, one end of each parallel hanging plate is fixed between the two M-arc yoke plates and is connected through a high-strength bolt, the other end of each parallel hanging plate extends out of the M-arc yoke plate, and the extending end of each parallel hanging plate is provided with a construction hole; the parallel hanging plate is provided with four parallel plates which are sequentially arranged at the end part of the inner arc of the M-arc connecting plate.
2. The auxiliary device for replacing the porcelain insulator at the end part of the extra-high voltage tension tower is characterized in that the M-arc-shaped yoke plates are arranged on the upper surface and the lower surface of the triangular yoke plate adjacent to the porcelain insulator at the end part and are connected by high-strength bolts.
3. The auxiliary device for replacing the porcelain insulator at the end part of the extra-high voltage tension tower according to claim 2, wherein the special fixture for the porcelain insulator is connected with the four parallel hanging plates through four high-strength bolts by using a gear lead screw.
4. The auxiliary device for replacing the porcelain insulator at the end part of the extra-high voltage tension tower according to any one of claims 1 to 3, wherein the thickness of each of the M-arc-shaped connecting plate and the parallel hanging plate is 20-25mm, and Q345 low-alloy high-strength steel is adopted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122337821.2U CN215989995U (en) | 2021-09-26 | 2021-09-26 | Auxiliary device is changed to extra-high voltage strain insulator tower tip vase |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122337821.2U CN215989995U (en) | 2021-09-26 | 2021-09-26 | Auxiliary device is changed to extra-high voltage strain insulator tower tip vase |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215989995U true CN215989995U (en) | 2022-03-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122337821.2U Active CN215989995U (en) | 2021-09-26 | 2021-09-26 | Auxiliary device is changed to extra-high voltage strain insulator tower tip vase |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215989995U (en) |
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2021
- 2021-09-26 CN CN202122337821.2U patent/CN215989995U/en active Active
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