CN117748354A - 10kV line adjustable gram isolation operating rod - Google Patents

10kV line adjustable gram isolation operating rod Download PDF

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Publication number
CN117748354A
CN117748354A CN202311682002.9A CN202311682002A CN117748354A CN 117748354 A CN117748354 A CN 117748354A CN 202311682002 A CN202311682002 A CN 202311682002A CN 117748354 A CN117748354 A CN 117748354A
Authority
CN
China
Prior art keywords
rod
guide rail
gram
supporting
telescopic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202311682002.9A
Other languages
Chinese (zh)
Inventor
陈荣
刘星宇
温煜
杨建勇
陈欣怡
李国廷
冯浩
梁金喜
刘腾宇
何海兵
黄晓芳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Power Grid Co Ltd
Maoming Power Supply Bureau of Guangdong Power Grid Co Ltd
Original Assignee
Guangdong Power Grid Co Ltd
Maoming Power Supply Bureau of Guangdong Power Grid Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangdong Power Grid Co Ltd, Maoming Power Supply Bureau of Guangdong Power Grid Co Ltd filed Critical Guangdong Power Grid Co Ltd
Priority to CN202311682002.9A priority Critical patent/CN117748354A/en
Publication of CN117748354A publication Critical patent/CN117748354A/en
Pending legal-status Critical Current

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Abstract

The application discloses an adjustable gram isolating operating rod for a 10kV line, which relates to the technical field of electric tools and comprises a gram rod, a wire supporting piece, a telescopic connecting mechanism, a rotary connecting mechanism and a fixing mechanism; the wire support piece comprises a support part for supporting the wire and a connecting handle part connected with the support part; the connecting handle part is movably inserted into the rod through one end of the rod and is connected with the rod in an adjustable telescopic length; the other end of the gram rod is connected with the telescopic connecting mechanism through the rotary connecting mechanism in a manner of adjustable rotation angle; the fixing mechanism is connected to the telescopic connecting mechanism at a position far away from the gram rod; the telescopic connection mechanism is used for adjusting the distance between the fixing mechanism and the rod. The design can flexibly and safely develop wire supporting and isolating operation, improves the operation efficiency, and solves the technical problem that the traditional suspension arm supporting mode can not realize the vehicle and personnel evacuation site.

Description

10kV line adjustable gram isolation operating rod
Technical Field
The application relates to the technical field of electric power tools, in particular to a 10kV line adjustable gram isolating operating rod.
Background
At present, equipment for supporting wires on a pole tower in 10kV live working is carried out through a suspension arm on a live working vehicle, so that the live working vehicle cannot shift the suspension arm of the vehicle in the process of supporting the wires by using the suspension arm, and once the vehicle and personnel cannot be evacuated from the site in time in the process when severe weather is suddenly caused, and great adverse conditions exist. Therefore, the application aims to develop an adjustable cable isolation operating rod for a 10kV line, which can prevent the grounding and the short circuit of a lead, so as to solve the problems.
Disclosure of Invention
In view of this, the purpose of this application is to provide 10kV circuit adjustable makes gram and keeps apart the action bars to solve current davit that adopts live working car and carry out the support wire and exist also can't in time withdraw vehicle and personnel on the spot when the sudden adverse weather's technical problem.
In order to achieve the technical purpose, the application provides an adjustable gram isolating operation rod for a 10kV line, which comprises a gram rod, a wire supporting piece, a telescopic connecting mechanism, a rotary connecting mechanism and a fixing mechanism;
the wire support comprises a support part for supporting a wire and a connecting handle part connected with the support part;
the connecting handle part is movably inserted into the gram rod through one end of the gram rod and is connected with the gram rod in an adjustable telescopic length;
the other end of the gram rod is connected with the telescopic connecting mechanism through the rotary connecting mechanism in a manner of adjustable rotation angle;
the fixing mechanism is connected to the telescopic connecting mechanism at a position far away from the gram rod;
the telescopic connection mechanism is used for adjusting the distance between the fixing mechanism and the lever.
Further, the wire support is a hanging type fork clamp;
the supporting part comprises a supporting handle in an inverted U shape and a fork jaw assembly fixed in the supporting handle;
the fork pliers assembly comprises two V-shaped spring pieces;
the two spring pieces are symmetrically arranged at two sides in the support handle, and an upper support gap and a lower support gap are formed between the two spring pieces, so that a wire can be clamped into the upper support gap through the lower support gap and is supported by the two spring pieces;
the connecting handle part is integrally connected with one end of the supporting handle.
Further, the spring piece is made of a metal material;
the support handle and the connecting handle are made of insulating materials.
Further, the spring piece is located the surface in last supporting gap is equipped with anti-skidding line.
Further, clamping beads which can elastically extend out are embedded in the outer side wall of the connecting handle part;
the outer side wall of the locking rod is provided with a plurality of clamping holes at intervals along the length direction of the locking rod, and the clamping holes can be used for movably clamping the clamping beads.
Further, the rotary connection mechanism comprises a rotary assembly and a rotary locking piece;
the rotating assembly comprises a first connecting rod and a second connecting rod which is rotationally connected with the first connecting rod;
one end of the first connecting rod is fixedly connected with the telescopic connecting mechanism;
one end of the second connecting rod is fixedly connected with the other end of the gram rod;
the rotary locking piece is arranged on the first connecting rod and used for locking the running fit of the first connecting rod and the second connecting rod.
Further, an external thread structure is arranged on the first connecting rod;
the rotary locking piece is sleeved on the first connecting rod and is provided with an internal thread structure in threaded fit with the external thread structure;
one end of the rotary locking piece can contact and prop against the other end of the gram rod so as to lock the rotation of the gram rod.
Further, the telescopic connecting mechanism comprises a first guide rail, a second guide rail and a guide rail locking piece;
the first guide rail is in sliding connection fit with the second guide rail;
the second guide rail is arranged at the bottom of the first guide rail;
the guide rail locking piece is arranged on the first guide rail and used for locking sliding fit between the first guide rail and the second guide rail;
the other end of the gram rod is connected with the top of the first guide rail through the rotary connecting mechanism;
the fixing mechanism is connected with one end, far away from the gram rod, of the second guide rail.
Further, a threaded hole is formed in the first guide rail;
the guide rail locking piece is inserted into the threaded hole and is in threaded connection with the threaded hole;
one end of the guide rail locking piece penetrates through the threaded hole and can contact and abut against the second guide rail so as to lock sliding fit between the first guide rail and the second guide rail.
Further, the fixing mechanism comprises a mechanism main body and a fixing assembly;
the fixing assembly comprises a screw rod and a fixing nut;
one end of the screw rod piece is provided with a hook part;
the other end of the screw rod part movably penetrates through the mechanism main body;
the fixed nut is sleeved on a rod section of the screw rod part, the other end of the fixed nut penetrates through the mechanism main body, and the fixed nut can contact and prop against the mechanism main body, so that a clamping space can be formed between the mechanism main body and the hook part.
According to the technical scheme, the 10kV line adjustable gram isolating operation rod designed by the application can be fixedly connected with hardware fittings such as iron tower angle irons and the like at a working place, the whole fixing of the device is realized, the wire supporting piece can support and isolate corresponding wires, the relative distance between the fixing mechanism and the gram rod can be adjusted through the telescopic connection mechanism, so that the wires with different distances from the hardware fittings can be adapted to support and isolate for use, the wire supporting piece and the telescopic length adjustable connection design between the gram rod can adapt to the support and isolation for use of wires with different heights from the fixed hardware fittings, and meanwhile, the rotary connection mechanism is used for realizing the adjustable design of the rotation angle of the gram rod, and the requirements of different working environments can be better met. The adjustable messenger's gram of this design keeps apart action lever apparatus, has nimble adjustable effect, can nimble safe development wire support isolation operation, improves the operating efficiency, also effectively solves the traditional davit of taking the live working car and supports the wire and exists when sudden abominable weather also unable in time with vehicle and personnel withdraw on-the-spot technical problem.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a perspective view of a 10kV line adjustable isolating lever provided in the present application;
FIG. 2 is a schematic view of a first partial structure of the 10kV line adjustable isolating lever provided in the present application;
FIG. 3 is a schematic view of a second partial structure of the 10kV line adjustable isolating lever provided in the present application;
in the figure: 1. a fixing mechanism; 11. a mechanism body; 12. a screw member; 121. a hook portion; 13. a fixing nut; 2. a telescopic connection mechanism; 21. a first guide rail; 22. a second guide rail; 23. a rail locking member; 3. a rotary connection mechanism; 31. a rotary locking member; 4. enabling the rod to be arranged; 5. a wire support; 51. a support part; 511. a support handle; 512. a spring piece; 52. and connecting the handle parts.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the embodiments of the present application, are within the scope of the embodiments of the present application.
In the description of the embodiments of the present application, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on directions or positional relationships shown in the drawings, are merely for convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the embodiments of the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, interchangeably connected, integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediary, or in communication between two elements. The specific meaning of the terms in the embodiments of the present application will be understood by those of ordinary skill in the art in a specific context.
The embodiment of the application discloses an adjustable gram isolating operation rod for a 10kV line.
Referring to fig. 1, an embodiment of a 10kV line adjustable isolating lever provided in an embodiment of the present application includes:
the utility model comprises a gram rod 4, a wire supporting piece 5, a telescopic connecting mechanism 2, a rotary connecting mechanism 3 and a fixing mechanism 1. The rod 4, i.e. the conventional insulating bar with a hollow cavity, can be made of an epoxy resin material with good insulating property, and has light weight and enough strength.
The wire support 5 comprises a support part 51 for supporting the wire and a connection handle part 52 connected with the support part 51, wherein the connection handle part 52 is movably inserted into the rod 4 through one end of the rod 4 and is connected with the rod 4 in a length-adjustable manner;
the other end of the gram rod 4 is connected with the telescopic connecting mechanism 2 through the rotary connecting mechanism 3 in a rotatable angle.
The fixing mechanism 1 is connected to a position of the telescopic connecting mechanism 2 away from the lever 4, and the telescopic connecting mechanism 2 is used for adjusting the distance between the fixing mechanism 1 and the lever 4.
The 10kV circuit adjustable messenger that this application designed keeps apart the action bars, fixed establishment 1 can carry out fixed connection with the gold utensil such as iron tower angle bar of job site, realize the holistic fixed of device, and wire support 5 can support the isolation to corresponding wire, can adjust the relative distance between fixed establishment 1 and the messenger's pole 4 through telescopic connection mechanism 2, thereby can adapt to the wire support isolation that is apart from gold utensil different distances and use, and the adjustable flexible length connection design between wire support 5 and the messenger's pole 4 can adapt to the support isolation that is apart from the wire of fixed gold utensil different height and use, simultaneously, utilize rotary connection mechanism 3 to be the adjustable design of rotation angle that realizes the messenger's pole 4, can satisfy different operation environment demands better. The adjustable messenger's gram of this design keeps apart action lever apparatus, has nimble adjustable effect, can nimble safe development wire support isolation operation, improves the operating efficiency, also effectively solves the traditional davit of taking the live working car and supports the wire and exists when sudden abominable weather also unable in time with vehicle and personnel withdraw on-the-spot technical problem.
The above is a first embodiment of the adjustable 10kV line isolation operating lever provided in the embodiments of the present application, and the following is a second embodiment of the adjustable 10kV line isolation operating lever provided in the embodiments of the present application, and refer to fig. 1 to 3 specifically.
Based on the scheme of the first embodiment:
further, the wire support 5 is a hanging-type fork jaw.
Specifically, the support portion 51 includes a support handle 511 in the form of an inverted U and a fork jaw assembly fixed in the support handle 511; the inverted U-like shape means that the support handle 511 encloses a certain space and has an opening facing downward, for example, inverted U-shape, inverted semicircle shape, etc., without limitation.
The fork pliers assembly comprises two V-shaped spring pieces 512, wherein the two spring pieces 512 are symmetrically arranged at two sides in the supporting handle 511, and an upper supporting gap and a lower supporting gap are formed between the two spring pieces, so that a wire can be clamped into the upper supporting gap through the lower supporting gap and is supported by the two spring pieces 512; specifically, one end of the spring plate 512 is fixedly connected to the inner side wall of the support handle 511, and a certain gap is formed between the other end of the spring plate and the inner side wall of the support handle 511 to provide the spring plate 512 with enough elastic deformation, and two splayed structures are formed between the two spring plates 512. When the wire is installed and used, the supporting part 51 is arranged above the wire to be supported and isolated, the supporting part 51 is moved downwards, the wire is clamped into the upper supporting gap through the lower supporting gap and the two spring pieces 512, the wire is supported by the two spring pieces 512, and when the wire is taken out, the supporting part 51 is moved upwards by force, so that the wire overcomes the spring pieces 512 to elastically move and withdraw from the upper supporting gap. The two spring plates 512 are used for forming the upper supporting gap, so that clamping and fixing can be formed on the wires, and the supporting and fixing effects are improved.
The connecting handle 52 and one end of the support handle 511 may be integrally connected.
Further, the spring plate 512 is made of metal material, provides better structural strength and elasticity, and the support handle 511 and the connection handle 52 can be made of insulating material.
Further, the outer surface of the spring plate 512 located in the upper supporting gap is provided with anti-slip lines.
Further, for the design of the telescopic adjustment connection between the connection handle 52 and the lever 4, a clamping bead (not shown in the figure) capable of extending elastically may be embedded on the outer side wall of the connection handle 52, and the design of the spring protrusion in the existing telescopic folding umbrella may be referred to, which is not described in detail.
The outer side wall of the rod 4 is provided with a plurality of clamping holes (not shown) which can be used for clamping the beads in a movable manner along the length direction of the rod at intervals, the connecting handle 52 is driven to extend or retract by applying force until the beads are matched with the corresponding clamping holes, and the telescopic adjustment of the corresponding length can be completed.
Further, the rotary connection mechanism 3 is designed to include a rotary assembly (not shown) and a rotary lock 31.
The rotating assembly comprises a first connecting rod and a second connecting rod which is rotationally connected with the first connecting rod, and the first connecting rod and the second connecting rod can be particularly connected through rotating connecting structural members such as a rotating coupler without limitation.
One end of the first connecting rod is fixedly connected with the telescopic connecting mechanism 2, one end of the second connecting rod is fixedly connected with the other end of the locking rod 4, and the rotary locking piece 31 is arranged on the first connecting rod and used for locking the running fit of the first connecting rod and the second connecting rod.
Further, the first connecting rod is provided with an external thread structure, and the rotary locking member 31 is sleeved on the first connecting rod and is provided with an internal thread structure in threaded fit with the external thread structure. One end of the rotation locking member 31 may contact against the other end of the lever 4 to lock the rotation of the lever 4.
During rotation adjustment, the rotary locking piece 31 is rotated to release the contact abutment limit of the lever 4, then the lever 4 is rotated to a proper angle, and then the rotary locking piece 31 is rotated to abut against the lever 4, so that locking is completed. The rotation locking member 31, i.e. the threaded sleeve, may be fixed with an anti-slip pad at one end thereof, which may generate a greater contact friction force when contacting the lever 4, thereby better restricting the rotation of the lever 4.
Further, the telescopic connection mechanism 2 is designed to comprise a first guide rail 21, a second guide rail 22 and a guide rail locking member 23.
The first guide rail 21 and the second guide rail 22 are in sliding connection and matched, the second guide rail 22 is arranged at the bottom of the first guide rail 21, the sliding connection and matched design can refer to the sliding fit design between the existing guide rails, and the sliding fit between the existing guide rails can be additionally provided with a limiting structure to limit the sliding fit range, so that details are not repeated.
The guide rail locking piece 23 is mounted on the first guide rail 21 and is used for locking sliding fit between the first guide rail 21 and the second guide rail 22; the other end of the lever 4 is connected with the top of the first guide rail 21 through the rotary connecting mechanism 3, and the fixing mechanism 1 is connected with one end of the second guide rail 22, which is far away from the lever 4.
Further, the first guide rail 21 is provided with a threaded hole (not shown), and the guide rail locking member 23 is inserted into the threaded hole and is in threaded connection with the threaded hole.
One end of the rail locking member 23 passes through the threaded hole and can contact and abut against the second rail 22 to lock the sliding fit between the first rail 21 and the second rail 22, the rail locking member 23 can be a screw or a bolt, the connection between the first rail 21 and the second rail 22 can be locked by tightening the rail locking member 23, and the first rail 21 and the second rail 22 can slide relatively by loosening the rail locking member 23.
Further, the fixing mechanism 1 is designed to include a mechanism main body 11 and a fixing component. The mechanism main body 11 plays a role in fixing and bearing, and can be of a U-shaped channel steel structure, and is not particularly limited.
The fixed subassembly includes screw member 12 and fixation nut 13, and the one end of screw member 12 is equipped with crotch portion 121, compares in T type portion design, can better block one side of gold utensil.
The other end of the screw member 12 movably passes through the mechanism body 11, and the fixing nut 13 is sleeved on a rod section of the screw member 12, the other end of which passes through the mechanism body 11, and can contact and abut against the mechanism body 11, so that a clamping space can be formed between the mechanism body 11 and the hook portion 121. One side of the mechanism main body 11 can contact and prop against the other side of the hardware fitting, the hook part 121 is clamped into one side edge of the hardware fitting, and then the fixing nut 13 is screwed until one side of the mechanism main body 11 contacts and props against the other side edge of the hardware fitting, so that the fixed connection between the fixing mechanism 1 and the hardware fitting can be completed.
The 10kV line adjustable isolating lever provided in the present application is described in detail above, and those skilled in the art, based on the ideas of the embodiments of the present application, will change the specific implementation and application scope, so the disclosure should not be construed as limiting the application.

Claims (10)

1. The 10kV line adjustable gram isolating operating rod is characterized by comprising a gram rod (4), a wire supporting piece (5), a telescopic connecting mechanism (2), a rotary connecting mechanism (3) and a fixing mechanism (1);
the wire support (5) comprises a support portion (51) for supporting a wire and a connection handle portion (52) connected with the support portion (51);
the connecting handle (52) is movably inserted into the gram rod (4) through one end of the gram rod (4) and is connected with the gram rod (4) in an adjustable telescopic length;
the other end of the gram rod (4) is connected with the telescopic connecting mechanism (2) through the rotary connecting mechanism (3) in an adjustable rotation angle;
the fixing mechanism (1) is connected to the telescopic connecting mechanism (2) at a position far away from the lever (4);
the telescopic connection mechanism (2) is used for adjusting the distance between the fixing mechanism (1) and the gram rod (4).
2. The 10kV line adjustable isolating lever according to claim 1, characterized in that the wire support (5) is a suspension fork;
the supporting part (51) comprises a supporting handle (511) which is similar to an inverted U shape and a fork jaw assembly fixed in the supporting handle (511);
the fork clamp assembly comprises two V-shaped spring pieces (512);
the two spring pieces (512) are symmetrically arranged at two sides in the supporting handle (511), and an upper supporting gap and a lower supporting gap are formed between the two spring pieces, so that a wire can be clamped into the upper supporting gap through the lower supporting gap and is supported by the two spring pieces (512);
the connecting handle part (52) is integrally connected with one end of the supporting handle (511).
3. The 10kV line adjustable isolating lever of claim 2, wherein the spring plate (512) is made of a metal material;
the support handle (511) and the connecting handle (52) are made of insulating materials.
4. The 10kV line adjustable isolating lever of claim 2, wherein the spring plate (512) is provided with anti-slip lines on an outer surface of the upper support gap.
5. The 10kV line adjustable isolating lever according to claim 1, characterized in that the outer side wall of the connecting handle (52) is embedded with a clamping bead capable of elastically extending;
a plurality of clamping holes for the movable clamping of the clamping beads are formed in the outer side wall of the locking rod (4) at intervals along the length direction of the locking rod.
6. The 10kV line adjustable isolating lever according to claim 1, characterized in that the rotary connection mechanism (3) comprises a rotary assembly and a rotary lock (31);
the rotating assembly comprises a first connecting rod and a second connecting rod which is rotationally connected with the first connecting rod;
one end of the first connecting rod is fixedly connected with the telescopic connecting mechanism (2);
one end of the second connecting rod is fixedly connected with the other end of the gram rod (4);
the rotary locking piece (31) is arranged on the first connecting rod and used for locking the running fit of the first connecting rod and the second connecting rod.
7. The 10kV line adjustable isolating lever of claim 6, wherein the first connecting rod is provided with an external thread structure;
the rotary locking piece (31) is sleeved on the first connecting rod and is provided with an internal thread structure in threaded fit with the external thread structure;
one end of the rotary locking piece (31) can be contacted and abutted with the other end of the lever (4) so as to lock the rotation of the lever (4).
8. The 10kV line adjustable isolating lever according to claim 1, characterized in that the telescopic connection mechanism (2) comprises a first rail (21), a second rail (22) and a rail lock (23);
the first guide rail (21) is in sliding connection fit with the second guide rail (22);
the second guide rail (22) is arranged at the bottom of the first guide rail (21);
the guide rail locking piece (23) is arranged on the first guide rail (21) and used for locking sliding fit between the first guide rail (21) and the second guide rail (22);
the other end of the gram rod (4) is connected with the top of the first guide rail (21) through the rotary connecting mechanism (3);
the fixing mechanism (1) is connected with one end of the second guide rail (22) far away from the gram rod (4).
9. The 10kV line adjustable isolating lever according to claim 8, wherein the first guide rail (21) is provided with a threaded hole;
the guide rail locking piece (23) is inserted into the threaded hole and is in threaded connection with the threaded hole;
one end of the guide rail locking piece (23) passes through the threaded hole and can contact and abut against the second guide rail (22) so as to lock sliding fit between the first guide rail (21) and the second guide rail (22).
10. The 10kV line adjustable isolating lever according to claim 1, characterized in that the fixing mechanism (1) comprises a mechanism body (11) and a fixing assembly;
the fixing assembly comprises a screw (12) and a fixing nut (13);
one end of the screw rod piece (12) is provided with a hook part (121);
the other end of the screw rod piece (12) movably penetrates through the mechanism main body (11);
the fixing nut (13) is sleeved on a rod section of the screw rod (12) with the other end penetrating through the mechanism main body (11) and can contact and prop against the mechanism main body (11), so that a clamping space can be formed between the mechanism main body (11) and the hook part (121).
CN202311682002.9A 2023-12-08 2023-12-08 10kV line adjustable gram isolation operating rod Pending CN117748354A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311682002.9A CN117748354A (en) 2023-12-08 2023-12-08 10kV line adjustable gram isolation operating rod

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311682002.9A CN117748354A (en) 2023-12-08 2023-12-08 10kV line adjustable gram isolation operating rod

Publications (1)

Publication Number Publication Date
CN117748354A true CN117748354A (en) 2024-03-22

Family

ID=90253657

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311682002.9A Pending CN117748354A (en) 2023-12-08 2023-12-08 10kV line adjustable gram isolation operating rod

Country Status (1)

Country Link
CN (1) CN117748354A (en)

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