CN209166817U - A kind of insulator replacement fixture tension test tool - Google Patents
A kind of insulator replacement fixture tension test tool Download PDFInfo
- Publication number
- CN209166817U CN209166817U CN201920132158.2U CN201920132158U CN209166817U CN 209166817 U CN209166817 U CN 209166817U CN 201920132158 U CN201920132158 U CN 201920132158U CN 209166817 U CN209166817 U CN 209166817U
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- connecting hole
- fixture
- hole
- isoceles triangle
- yoke plate
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- 238000012360 testing method Methods 0.000 title claims abstract description 62
- 239000012212 insulator Substances 0.000 title claims abstract description 39
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 241001063191 Elops affinis Species 0.000 claims description 4
- 235000002756 Erythrina berteroana Nutrition 0.000 claims description 4
- HKPHPIREJKHECO-UHFFFAOYSA-N butachlor Chemical compound CCCCOCN(C(=O)CCl)C1=C(CC)C=CC=C1CC HKPHPIREJKHECO-UHFFFAOYSA-N 0.000 claims description 4
- 238000009864 tensile test Methods 0.000 description 15
- 238000000034 method Methods 0.000 description 6
- 238000010998 test method Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The embodiment of the present application discloses a kind of insulator replacement fixture tension test tool, it include: isoceles triangle yoke plate, the vertex of the isoceles triangle yoke plate is provided with the first connecting hole, it is respectively arranged with the second connecting hole and third connecting hole at two base angles, the length and the ambilateral screw rod of wing clamp of the hole heart line of second connecting hole and the third connecting hole connect being equidistant between hole；Solves the technical issues of there is presently no matched test instruments, so that can not carry out to the pull test of insulator replacement fixture.
Description
Technical field
This application involves livewire work technical field more particularly to a kind of insulator replacement fixture tension test tool and greatly
Knife fixture pull test method.
Background technique
When carrying out replacing insulator operation, it usually needs carry out less important work, wing type clamp apparatus by various fixtures
It is all common auxiliary fixture with broadsword fixture.
It usually can be at tower head end when replacing anchor support first insulator or bunch of insulator for wing type clamp apparatus
Wing type clamp apparatus is installed, then the secondary special mould clamp of installation one on three yoke plate of conductor wire end on towing plate, wing type clamp apparatus and special mould clamp it
Between connect with pull rod by screw rod, will realize in the load transfer to pull rod of insulator chain by tightening screw rod and replace anchor support
First insulator or bunch of insulator.
For broadsword fixture, preceding card and rear card are generally included, the bayonet end of preceding card offers and equipotential side yoke plate phase
The bayonet of cooperation and the crotch matched with the U-shaped ring on yoke plate, non-bayonet end are connect with insulated pull rod, and the bayonet end blocked afterwards is set
It is equipped with the bayonet matched with ground potential side yoke plate, the other end is connect with screw component.
When work, by the shoulder of the bayonet of preceding card insertion equipotential side yoke plate, and crotch hooked U-shaped on the side yoke plate
Ring；Meanwhile it being fixed on the side yoke plate by the shoulder of the bayonet of rear card insertion ground potential side yoke plate, and by the end of rear card.Turn
Handle on dynamic screw component, tighten screw, by fixture install the load transfer on the insulator chain of side to fixture insulation pulling plate with
On lead screw, insulator chain can carry out the replacement of the insulator string in the state that not stress that relaxes, service personnel.
As it can be seen that insulator replacement fixture is in use, require first to shift by the load that insulator chain is born originally
Onto fixture, therefore fixture needs enough mechanical strengths.It, can be to insulator for the intensity for verifying insulator replacement fixture
It replaces fixture and carries out pull test, but there is presently no matched test instruments, so that pull test can not carry out.
Utility model content
The embodiment of the present application provides a kind of insulator replacement fixture tension test tool, solves that there is presently no matchings
Test instrument the technical issues of so that can not be carried out to the pull test of insulator replacement fixture.The embodiment of the present application also mentions
A kind of broadsword fixture pull test method is supplied.
In view of this, the application first aspect provides a kind of insulator replacement fixture tension test tool, comprising: isosceles
Triangle yoke plate is provided with the first connecting hole in the vertex of the isoceles triangle yoke plate, is respectively arranged with second at two base angles
The length and wing type clamp apparatus two of the hole heart line of connecting hole and third connecting hole, second connecting hole and the third connecting hole
The screw rod of side connects being equidistant between hole.
It preferably, further include two steel pull-rods；
The steel pull-rod connects hole with the screw rod of the wing type clamp apparatus and matches, and first end is provided with anticreep snap ring, and second
End may pass through the screw rod and connects hole and connect with second connecting hole or the third connecting hole in test.
Preferably, the isoceles triangle yoke plate is also provided with pairs of broadsword fixture connecting hole；
Each pair of broadsword fixture connecting hole is symmetricly set on the symmetry axis two sides of the isoceles triangle yoke plate, with described first
Connecting hole forms isoceles triangle relationship.
Preferably, further includes: isoceles triangle duplicate invoice plate, the vertex of the isoceles triangle duplicate invoice plate are provided with pull head connection
Hole, the isoceles triangle duplicate invoice plate are additionally provided with pairs of broadsword fixture connecting hole, the position of the broadsword fixture connecting hole with
The position of the broadsword fixture connecting hole of the isoceles triangle yoke plate is corresponding.
It preferably, further include connecting plate, for connecting the preceding card and rear card of the broadsword fixture in test.
Preferably, two pairs of broadsword fixture connecting holes are specifically provided on the isoceles triangle yoke plate, it is respectively first pair big
Knife fixture connecting hole and second pair of broadsword fixture connecting hole.
The embodiment of the present application also provides a kind of broadsword fixture pull test method, using the latter two institute of above-mentioned first aspect
The insulator replacement fixture tension test tool stated, comprising:
S1: the side of the first connecting hole of isoceles triangle yoke plate and tensile testing machine is connected；
S2: the pull head connecting hole of isoceles triangle duplicate invoice plate is connect with the other side of the tensile testing machine；
S3: the bayonet end of the preceding card of first pair of broadsword fixture is connected to symmetry axis one side of the isoceles triangle yoke plate
On broadsword fixture connecting hole；
S4: the bayonet end of the rear card of first pair of broadsword fixture is connected to the correspondence position of the isoceles triangle duplicate invoice plate
On the broadsword fixture connecting hole set；
S5: the non-bayonet end of the preceding card is connect with the rear non-bayonet end blocked by connecting plate；
S6: second pair of broadsword fixture is connected to the isoceles triangle yoke plate according to the S3 to the same method of the S5
With the another side of the symmetry axis of the isoceles triangle duplicate invoice plate；
S7: start the tensile testing machine and carry out pull test.
As can be seen from the above technical solutions, the embodiment of the present application has the advantage that
In the embodiment of the present application, a kind of insulator replacement fixture tension test tool is provided, the tool pair can be used
Wing type clamp apparatus carries out pull test.The tool includes isoceles triangle yoke plate, and isoceles triangle yoke plate has opened up three connecting holes, respectively
At apex angle and two base angles, wherein the second connecting hole and third connecting hole are located at base angle, the second connecting hole and third
The length and the ambilateral screw rod of wing clamp of the hole heart line of connecting hole connect being equidistant between hole.
When carrying out pull test to wing type clamp apparatus, the screw rod at two flank side of wing type clamp apparatus can be connected into hole and respectively corresponded
Connect with the second connecting hole of isoceles triangle yoke plate and third connecting hole, then by the middle part of wing type clamp apparatus connector sleeve ear connect draw
The pull head side of force tester, the first connecting hole of isoceles triangle yoke plate are fixed or connect the pull head pair of tensile testing machine
Side then can star tensile testing machine and carry out pull test.
Due to the second connecting hole of isoceles triangle yoke plate wing type clamp apparatus corresponding with the distance between third connecting hole two sides screw rod
The even distance between hole, therefore when tensile testing machine applies pulling force, when the stress condition and actual insulation of wing type clamp apparatus are replaced
Force status it is identical, i.e., its pulling force by outside pull head of middle part, the screw rod of two sides connect hole by the drawing applied with pull head
The reversed counter pull of power, to realize pull test on the basis of simulation wing type clamp apparatus true stress.
Detailed description of the invention
Fig. 1 is a kind of isoceles triangle for insulator replacement fixture tension test tool that the application one embodiment provides
The front view and side view of yoke plate；
Fig. 2 is a kind of isoceles triangle for insulator replacement fixture tension test tool that second embodiment of the application provides
The front view and side view of duplicate invoice plate；
Fig. 3 is that a kind of insulator replacement fixture tension test tool that the application one embodiment provides is applied in aerofoil profile
Connection schematic diagram in the pull test of fixture；
Fig. 4 is that a kind of insulator replacement fixture tension test tool that second embodiment of the application provides is applied in aerofoil profile
Connection schematic diagram in the pull test of fixture；
Appended drawing reference: isoceles triangle yoke plate 1, the first connecting hole 11, the second connecting hole 12, third connecting hole 13, Yi Dui great
Knife fixture connecting hole 14, steel pull-rod 2, anticreep snap ring 21, wing type clamp apparatus 3, screw rod connect hole 31, broadsword fixture 4, preceding card 41, rear card
42, connecting plate 5, isoceles triangle duplicate invoice plate 6.
Specific embodiment
It is clearly and completely described below in conjunction with technical solution of the attached drawing to the embodiment of the present application, it is clear that described
Embodiment be the embodiment of the present application a part of the embodiment, instead of all the embodiments.Based on the reality in the embodiment of the present application
Example is applied, every other embodiment obtained by those of ordinary skill in the art without making creative efforts all belongs to
In the range of the embodiment of the present application protection.
In the description of the embodiment of the present application, it should be noted that term " center ", "upper", "lower", "left", "right",
The orientation or positional relationship of the instructions such as "vertical", "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings,
It is merely for convenience of description the embodiment of the present application and simplifies description, rather than the device or element of indication or suggestion meaning must have
There is specific orientation, be constructed and operated in a specific orientation, therefore should not be understood as the limitation to the embodiment of the present application.In addition,
Term " first ", " second ", " third " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the embodiment of the present application, it should be noted that unless otherwise clearly defined and limited, term " peace
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
The concrete meaning of language in the embodiment of the present application.
A kind of insulator replacement fixture pull test that the application one embodiment is provided below with reference to Fig. 1 to Fig. 3
Tool is illustrated.
A kind of insulator replacement fixture tension test tool provided by the embodiments of the present application, including isoceles triangle yoke plate 1.Deng
Lumbar triangle yoke plate 1 substantially has the profile of isosceles triangle, and vertex is provided with the first connecting hole 11, distinguishes at two base angles
It is provided with the second connecting hole 12 and third connecting hole 13.
Wherein, the second connecting hole 12 and the length of the hole heart line of third connecting hole 13 and the screw rod of 3 two sides of wing type clamp apparatus
Even being equidistant between hole 31, thus when isoceles triangle yoke plate 1 is with 3 corresponding connection of wing type clamp apparatus, under a stretching force, the wing
The pull head that the pulling force that two flank sides of type fixture 3 receive can be parallel to tensile testing machine is applied to the drawing at 3 middle part of wing type clamp apparatus
Power, it is corresponding with true stress condition.
In the specific connection of wing type clamp apparatus 3 and isoceles triangle yoke plate 1, it is relatively simple that intermediate rope etc. can be directly used
Mode connects, but such connection type more lacks in safety, and the receiving pulling force of fixture is usually very big, some are very
To the pulling force for needing to test 5 tons, the intensity of centre rope is also unsatisfactory for the requirement of test.Therefore, dedicated steel pull-rod can be set
2, the screw rod that steel pull-rod 2 can pass through wing type clamp apparatus 3 connects hole 31, and first end is provided with anticreep snap ring 21, for trying in pulling force
When testing, wing type clamp apparatus 3 is blocked, the connection of wing type clamp apparatus 3 and isoceles triangle yoke plate 1 is kept, will not fall off under tension；Second end
It can be connect in test with the second connecting hole 12 or third connecting hole 13 of isoceles triangle yoke plate 1.
It should be noted that connection described herein, in specific connection, it may be necessary to commonly connect by some
The fittings such as fitting, such as shackle, clamping plate, those skilled in the art, which can according to need, voluntarily selects suitable connector to realize company
It connects, the application does not enumerate herein.
It is a kind of the detailed of the insulator replacement fixture tension test tool provided the application one embodiment above
Illustrate, can be used for the pull test of wing type clamp apparatus.It, can be by wing type clamp apparatus two when carrying out pull test to wing type clamp apparatus
Screw rod at flank side connects that hole is corresponding to be connect with the second connecting hole of isoceles triangle yoke plate and third connecting hole, then by the wing
In the middle part of type fixture connector sleeve ear connection tensile testing machine pull head side, the first connecting hole of isoceles triangle yoke plate be fixed or
Person connects the pull head opposite side of tensile testing machine, then can star tensile testing machine and carry out pull test.
Due to the second connecting hole of isoceles triangle yoke plate wing type clamp apparatus corresponding with the distance between third connecting hole two sides screw rod
The even distance between hole, therefore when tensile testing machine applies pulling force, when the stress condition and actual insulation of wing type clamp apparatus are replaced
Force status it is identical, i.e., its pulling force by outside pull head of middle part, the screw rod of two sides connect hole by the drawing applied with pull head
The reversed counter pull of power, to realize pull test on the basis of simulation wing type clamp apparatus true stress.
It is optimized on the basis of above-mentioned one embodiment below, the insulator that above-mentioned one embodiment is provided
Replacement fixture tension test tool can be further applicable to the pull test of broadsword fixture, may refer to Fig. 2 and Fig. 4.
Specifically, the broadsword fixture connecting hole 14 that can be arranged on isoceles triangle yoke plate 1 pair.For a pair of of machete card
Have connecting hole 14, be symmetricly set on the symmetry axis two sides of isoceles triangle yoke plate 1, forms isoceles triangle with the first connecting hole 11 and close
System.Certainly, for multipair broadsword fixture connecting hole 14, then multiple isoceles triangle relationships are formed with the first connecting hole 11.
It is understood that the distance between every a pair of broadsword fixture connecting hole 14 is all different, so as to adapt to
The broadsword fixture 4 of different size.In the present embodiment, two pairs of broadsword fixture connecting holes 14 are specifically provided with, it is of course also possible to root
According to the broadsword fixture connecting hole 14 for needing to be arranged different pairs.
Broadsword fixture connecting hole 14 can be connect with the bayonet end of the preceding card 41 of broadsword fixture 4 or rear card 42, specifically connected
When connecing, can be used one with the matched pin of connecting hole be interspersed in front of broadsword fixture the pin hole at 42 bayonet ends of card 41 or rear card with etc.
In the connecting hole of lumbar triangle yoke plate 1.
In this way, can use two pieces of isoceles triangle yoke plates 1 when carrying out the pull test of broadsword fixture, it is utilized respectively the
One connecting hole is connected to the two sides of tensile testing machine, then the bayonet end of card 41 before broadsword fixture and rear card 42 is connected to isosceles three
On angle yoke plate 1, non-bayonet end rigid connection, to simulate its operating condition really used.
Also dedicated isoceles triangle duplicate invoice plate 6 can be set, isoceles triangle duplicate invoice plate 6 can be dedicated for broadsword fixture 4
Pull test.Likewise, pull head connecting hole can be provided in vertex, and it is also provided with pairs of broadsword fixture connecting hole
14, the position of broadsword fixture connecting hole 14 should be corresponding with the position of broadsword fixture connecting hole 14 of isoceles triangle yoke plate 1, fits
Block the 41 or rear connections for blocking 42 bayonet end before answering broadsword fixture.
In view of in practical application, screw component can be passed through at non-bayonet end between card 41 and rear card 42 before broadsword fixture
It, can to simulate the rigid connection for passing through screw component and insulated pull rod rigid connection in test with insulated pull rod rigid connection
Connecting plate 5 is arranged, in test between the preceding card of connection broadsword fixture and rear card.
The above are a kind of insulator replacement fixture tension test tools of second embodiment of the application offer specifically
It is bright, by the optimization in first embodiment, so that insulator replacement fixture tension test tool can either be suitable for wing clamp
The pull test of tool can also be suitable for the pull test of broadsword fixture.
When carrying out the pull test of broadsword fixture, it should be noted that in order to determine the drawing of broadsword fixture receiving
Power needs symmetrically to install broadsword fixture in the two sides of isoceles triangle yoke plate and isoceles triangle duplicate invoice plate symmetry axis, thus
So that the stress of two pairs of broadsword fixtures is equal, the pulling force that single pair broadsword fixture is born can determine.
Specifically, the connection that can be followed the steps below before test in application prepares, the following are the application implementations
A kind of broadsword fixture pull test method that example provides:
S1: the side of the first connecting hole of isoceles triangle yoke plate and tensile testing machine is connected.
S2: the other side of the pull head connecting hole of isoceles triangle duplicate invoice plate and tensile testing machine is connected.
S3: the bayonet end of the preceding card of first pair of broadsword fixture is connected to the machete on symmetry axis one side of isoceles triangle yoke plate
On fixture connecting hole.
S4: the bayonet end of rear card is connected on the broadsword fixture connecting hole of the corresponding position of isoceles triangle duplicate invoice plate.
S5: the non-bayonet end of preceding card is connect with the non-bayonet end blocked afterwards by connecting plate.
S6: according to above-mentioned S3 to S5, second pair of broadsword fixture is connected to isoceles triangle yoke plate and isoceles triangle duplicate invoice
The another side of the symmetry axis of plate.
That is, second pair of broadsword fixture to be symmetricly set on to the opposite side of first pair of broadsword fixture, so that pulling force
When test, the pulling force that two pairs of broadsword fixtures are subject to is equal, may thereby determine that the pulling force that in test single pair broadsword fixture is subject to
Specific value.
S7: starting tensile testing machine carries out pull test.
The description of the present application and term " first " in above-mentioned attached drawing, " second ", " third ", " the 4th " etc. are (if deposited
) it is to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that use in this way
Data are interchangeable under appropriate circumstances, so that embodiments herein described herein for example can be in addition to illustrating herein
Or the sequence other than those of description is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that
Cover it is non-exclusive include, for example, containing the process, method, system, product or equipment of a series of steps or units need not limit
In step or unit those of is clearly listed, but may include be not clearly listed or for these process, methods, produce
The other step or units of product or equipment inherently.
It should be appreciated that in this application, " at least one (item) " refers to one or more, and " multiple " refer to two or two
More than a."and/or" indicates may exist three kinds of relationships, for example, " A and/or B " for describing the incidence relation of affiliated partner
It can indicate: only exist A, only exist B and exist simultaneously tri- kinds of situations of A and B, wherein A, B can be odd number or plural number.Word
Symbol "/" typicallys represent the relationship that forward-backward correlation object is a kind of "or"." at least one of following (a) " or its similar expression, refers to
Any combination in these, any combination including individual event (a) or complex item (a).At least one of for example, in a, b or c
(a) can indicate: a, b, c, " a and b ", " a and c ", " b and c ", or " a and b and c ", and wherein a, b, c can be individually, can also
To be multiple.
The above, above embodiments are only to illustrate the technical solution of the application, rather than its limitations；Although referring to before
Embodiment is stated the application is described in detail, those skilled in the art should understand that: it still can be to preceding
Technical solution documented by each embodiment is stated to modify or equivalent replacement of some of the technical features；And these
It modifies or replaces, the spirit and scope of each embodiment technical solution of the application that it does not separate the essence of the corresponding technical solution.
Claims (6)
1. a kind of insulator replacement fixture tension test tool characterized by comprising isoceles triangle yoke plate, in the isosceles
The vertex of triangle yoke plate is provided with the first connecting hole, is respectively arranged with the second connecting hole and third connecting hole at two base angles,
The length and the ambilateral screw rod of wing clamp of the hole heart line of second connecting hole and the third connecting hole connect between hole away from
From equal.
2. a kind of insulator replacement fixture tension test tool according to claim 1, which is characterized in that further include two
Steel pull-rod；
The steel pull-rod connects hole with the screw rod of the wing type clamp apparatus and matches, and first end is provided with anticreep snap ring, and second end exists
It may pass through the screw rod when test and connect hole and connect with second connecting hole or the third connecting hole.
3. a kind of insulator replacement fixture tension test tool according to claim 1, which is characterized in that the isosceles three
Angle yoke plate is also provided with pairs of broadsword fixture connecting hole；
Each pair of broadsword fixture connecting hole is symmetricly set on the symmetry axis two sides of the isoceles triangle yoke plate, connect with described first
Hole forms isoceles triangle relationship.
4. a kind of insulator replacement fixture tension test tool according to claim 3, which is characterized in that further include: etc.
Lumbar triangle duplicate invoice plate, the vertex of the isoceles triangle duplicate invoice plate are provided with pull head connecting hole, and the isoceles triangle duplicate invoice plate is also
It is provided with pairs of broadsword fixture connecting hole, the machete card of the position of the broadsword fixture connecting hole and the isoceles triangle yoke plate
The position for having connecting hole is corresponding.
5. a kind of insulator replacement fixture tension test tool according to claim 4, which is characterized in that further include connection
Plate, for connecting the preceding card and rear card of the broadsword fixture in test.
6. a kind of insulator replacement fixture tension test tool according to claim 3, which is characterized in that the isosceles three
Two pairs of broadsword fixture connecting holes, respectively first pair of broadsword fixture connecting hole and second pair of machete card are specifically provided on the yoke plate of angle
Has connecting hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920132158.2U CN209166817U (en) | 2019-01-25 | 2019-01-25 | A kind of insulator replacement fixture tension test tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920132158.2U CN209166817U (en) | 2019-01-25 | 2019-01-25 | A kind of insulator replacement fixture tension test tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209166817U true CN209166817U (en) | 2019-07-26 |
Family
ID=67328837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920132158.2U Active CN209166817U (en) | 2019-01-25 | 2019-01-25 | A kind of insulator replacement fixture tension test tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209166817U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109556853A (en) * | 2019-01-25 | 2019-04-02 | 广东电网有限责任公司 | A kind of insulator replacement fixture tension test tool |
-
2019
- 2019-01-25 CN CN201920132158.2U patent/CN209166817U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109556853A (en) * | 2019-01-25 | 2019-04-02 | 广东电网有限责任公司 | A kind of insulator replacement fixture tension test tool |
| CN109556853B (en) * | 2019-01-25 | 2024-04-16 | 广东电网有限责任公司 | Clamp tensile test tool is changed to insulator |
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Address after: 510600 No. 757 Dongfeng East Road, Guangzhou, Guangdong, Yuexiu District Patentee after: GUANGDONG POWER GRID Co.,Ltd. Patentee after: Guangdong Power Grid Energy Development Co.,Ltd. Address before: 510600 No. 757 Dongfeng East Road, Guangzhou, Guangdong, Yuexiu District Patentee before: GUANGDONG POWER GRID Co.,Ltd. Patentee before: GUANGDONG POWER TRANSMISSION AND TRANSFORMATION ENGINEERING Co.,Ltd. |