Pantograph cambered surface insulator dismounting and fixing device

Abstract

The utility model provides a pantograph cambered surface insulator dismounting and mounting fixing device, comprising a ring outer wall fixing assembly comprising a first fixing frame and a second fixing frame which are connected into a ring shape and surround the outer wall of a cambered surface insulator, the inner walls of the first fixing frame and the second fixing frame are arc-shaped, and the inner walls of the first fixing frame and the second fixing frame are arc-shaped; the shapes and the sizes of the inner walls of the first fixing frame and the second fixing frame are matched with those of the outer wall of the cambered surface insulator, a first through hole is formed in the side wall of the first fixing frame, a first nut is fixedly assembled on the outer wall of the first fixing frame, and the first nut and the first through hole are coaxially arranged; the abutting and fixing assembly comprises an abutting and fixing rod, the outer wall of the abutting and fixing rod is provided with external threads, and one end of the abutting and fixing rod sequentially penetrates through the first nut and the first through hole to abut and fix the outer wall of the cambered surface insulator and is in threaded connection with the first nut. According to the utility model, the insulator can be simultaneously fixed on the arc vertical surface and the inner wall of the insulator, the fixation is firmer, and the surface of the insulator cannot be damaged when the insulator is disassembled and assembled.

Description

Technical Field

[0001] The utility model relates to the technical field of urban rail transit vehicle maintenance, in particular to a pantograph arc surface insulator disassembly and assembly fixing device. Background Art

[0002] The high-voltage current collecting device on the roof of the train adopts a pantograph. The bottom of the pantograph is fixed to the roof and the insulation isolation is generally four insulators. In the selection of insulators, many insulators adopt a curved surface design, such as Figure 1 As shown. When replacing the pantograph assembly or insulator in daily maintenance, the insulator must be disassembled. However, since the insulator adopts an arc surface design, and the fixing screws of the upper and lower fixing holes of the insulator have a diameter of 20mm, the tightening torque is large. Often, after removing one fixing screw, when removing another bolt, the insulator cannot be fixed on the arc surface and rotates, making it difficult to remove. Therefore, a disassembly and fixing device is required to fix the insulator in advance.

[0003] The existing fixing devices include a chain-type fastener, which can fasten the insulator, but easily causes marks and scratches on the surface of the insulator, causing damage to the surface of the insulator; and a belt-type fastener, which cannot fix the insulator well because the surface of the insulator is smooth and has an arc surface, and slipping may occur during disassembly after fixing. Utility Model Content

[0004] In order to solve the above problems, the utility model proposes a pantograph arc surface insulator disassembly and fixing device, which can fix the insulator on the arc vertical surface and inner wall of the insulator at the same time, the fixation is more firm, and the surface of the insulator will not be damaged when the insulator is disassembled and assembled.

[0005] The utility model proposes a pantograph curved insulator disassembly and fixing device, comprising:

[0006] The ring outer wall fixing assembly comprises a first fixing frame and a second fixing frame connected in a ring shape and arranged to surround the outer wall of the arc surface insulator, the inner walls of the first fixing frame and the second fixing frame are both arc-shaped, the shapes and sizes of the inner walls of the first fixing frame and the second fixing frame match the outer wall of the arc surface insulator, the side wall of the first fixing frame is provided with a first through hole, the outer wall of the first fixing frame is fixedly equipped with a first nut, and the first nut is coaxially arranged with the first through hole;

[0007] The fixing assembly includes a fixing rod, the outer wall of which is provided with an external thread, one end of which passes through the first nut and the first through hole in sequence to fix the outer wall of the arc surface insulator and is threadedly connected with the first nut.

[0008] In one embodiment, the first fixing frame is detachably connected to the second fixing frame.

[0009] In one embodiment, one end of the first fixing frame is rotatably connected to one end of the second fixing frame.

[0010] In one embodiment, the heights of the first fixing frame and the second fixing frame are both the same as the height of the vertical surface of the arc of the arc insulator.

[0011] In one embodiment, the pantograph curved insulator disassembly and fixing device further comprises a plurality of side wall fixing components, the side wall fixing components comprising a side locking rod and a second nut, and the side wall of the first fixing frame is provided with a plurality of inverted U-shaped grooves;

[0012] The side locking rod is L-shaped, one end is cylindrical, the outer wall is provided with external threads, and the other end is cubic;

[0013] One cubic end of the side locking rod abuts against the inner wall of the arc insulator, and one cylindrical end passes through the inverted U-shaped groove and is threadedly connected to the second nut on the outer wall of the first fixing frame.

[0014] In one embodiment, the first fixing frame includes a first outer frame and a first inner frame;

[0015] The first outer frame is U-shaped, the first inner frame is arc-shaped, and the inner diameter of the first inner frame matches the outer diameter of the arc surface insulator;

[0016] The outer wall of the first inner frame is fixedly connected to the inner wall of the first outer frame, and the size of the inner wall of the first outer frame matches the diameter of the outer wall of the first inner frame;

[0017] The first through hole is provided at a connection position between the first outer frame and the first inner frame, and passes through the side walls of the first outer frame and the first inner frame, and the first nut is fixedly disposed on the outer wall of the first outer frame;

[0018] Both ends of the first outer frame are respectively fixedly connected with fixing plates, each fixing plate is provided with an inverted U-shaped groove, and the inverted U-shaped groove of the fixing plate is clamped with the side locking rod.

[0019] In one embodiment, two ends of the first inner frame are respectively fixedly connected with connecting plates, and each connecting plate is provided with an inverted U-shaped groove;

[0020] The two ends of the second fixing frame are respectively provided with a through hole, and a third nut is coaxially fixed to the through hole, and the spacing between the two through holes matches the spacing of the inverted U-shaped grooves on the connecting plate;

[0021] The first fixing frame and the second fixing frame are detachably connected via screws, and the screws sequentially pass through the inverted U-shaped groove of the connecting plate, the through hole, and are threadedly connected with the third nut.

[0022] In one embodiment, the first inner frame is fixed to the inner wall of the first outer frame by welding;

[0023] The first nut is fixed to the outer wall of the first outer frame by welding;

[0024] The third nut is fixed to the outer wall of the second fixing frame by welding.

[0025] In one embodiment, the retaining assembly further includes a gripping rod and a bolt, and two ends of the gripping rod are respectively coaxially fixedly connected to one end of the retaining rod and a screw portion of the bolt.

[0026] In one embodiment, a plurality of washers are sleeved on the retaining rod, and the washers are located between the gripping rod and the first nut. The number of the washers is selected according to the size of the arc surface insulator.

[0027] Compared with the prior art, the beneficial effects of the pantograph curved insulator disassembly and fixing device of the utility model are:

[0028] The pantograph arc surface insulator disassembly and fixing device of the utility model can fix the arc vertical surface of the insulator through the first fixing frame and the second fixing frame, and then screw the outer wall of the fixed insulator into the fixing rod, and use the side locking rod and the second nut to fix the inner wall of the insulator, so as to fix the insulator on the arc vertical surface and the inner wall of the insulator at the same time, and the fixation is more firm, ensuring that the insulator will not slip or rotate when disassembling the insulator, and the surface of the insulator will not be damaged during disassembly and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of a pantograph arc surface insulator;

[0030] Figure 2 It is a structural schematic diagram of a pantograph curved insulator disassembly and fixing device according to an embodiment of the utility model;

[0031] Figure 3 It is a structural schematic diagram of a fixing assembly in a pantograph curved insulator disassembly and fixing device according to an embodiment of the utility model;

[0032] Figure 4 It is a structural schematic diagram of a first fixing frame in a pantograph curved insulator disassembly and fixing device according to an embodiment of the utility model;

[0033] Figure 5 It is a structural schematic diagram of a side wall fixing assembly in a pantograph curved insulator disassembly and fixing device according to an embodiment of the utility model;

[0034] Figure 6 It is a structural schematic diagram of a second fixing frame in a pantograph curved insulator disassembly and fixing device according to an embodiment of the utility model;

[0035] Figure 7 The utility model is a schematic diagram of the installation of a pantograph curved insulator disassembly and fixing device and a curved insulator.

[0036] Reference numerals

[0037] 1. First fixed frame, 11. First outer frame, 12. First inner frame, 13. First through hole, 14. First nut, 15. Fixed plate, 16. Connecting plate, 2. Second fixed frame, 21. Third nut, 22. Through hole, 3. Reinforcing assembly, 31. Reinforcing rod, 32. Grip rod, 33. Bolt, 34. Gasket, 4. Side wall fixing assembly, 41. Side locking rod, 42. Second nut, 5. Screw, A. Arc insulator, B. Arc vertical surface, C. Upper fixing hole, D. Lower fixing hole, E. Inner wall of arc insulator. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that many specific details are set forth in the following description to facilitate a full understanding of the utility model, but the utility model can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0039] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general proportion, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0040] Secondly, the term "one embodiment" or "embodiment" in this application refers to a specific feature, structure or characteristic that can be included in at least one implementation of the utility model. The "in one embodiment" that appears in different places in this specification does not refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

[0041] The utility model proposes a pantograph arc surface insulator disassembly and fixing device, including a ring outer wall fixing component and a fixing component 3, see Figure 2 .

[0042] The ring outer wall fixing assembly includes a first fixing frame 1 and a second fixing frame 2 connected in a ring shape and arranged to surround the outer wall of the arc surface insulator. The inner walls of the first fixing frame 1 and the second fixing frame 2 are both arc-shaped, and the shapes and sizes of the inner walls of the first fixing frame 1 and the second fixing frame 2 match the outer wall of the arc surface insulator. A first through hole 13 is opened on the side wall of the first fixing frame 1, and a first nut 14 is fixedly assembled on the outer wall of the first fixing frame 1, and the first nut 14 is coaxially arranged with the first through hole 13.

[0043] like Figure 3 As shown, the fixing assembly 3 includes a fixing rod 31, and the outer wall of the fixing rod 31 is provided with an external thread. One end of the fixing rod 31 passes through the first nut 14 and the first through hole 13 in sequence to fix the outer wall of the arc surface insulator, and is threadedly connected with the first nut 14. The first nut 14 of an embodiment of the utility model is a hexagonal nut.

[0044] In one embodiment of the utility model, the first fixing frame 1 and the second fixing frame 2 are detachably connected, such as by bolts, screws, etc.

[0045] In one embodiment of the utility model, one end of the first fixing frame 1 is rotatably connected to one end of the second fixing frame 2. For example, one end of the first fixing frame 1 and one end of the second fixing frame 2 can be rotatably connected via a hinge or an axis, and the other end can be opened and closed according to usage.

[0046] The heights of the first fixing frame 1 and the second fixing frame 2 in an embodiment of the utility model are both the same as the height of the arc vertical surface B of the arc surface insulator.

[0047] The pantograph arc insulator disassembly and fixing device according to an embodiment of the utility model further comprises a plurality of side wall fixing components 4. Figure 5 As shown, the side wall fixing assembly 4 includes a side locking rod 41 and a second nut 42, and the side wall of the first fixing frame 1 is provided with a plurality of inverted U-shaped grooves. The side locking rod 41 is L-shaped, one end is cylindrical, the outer wall is provided with an external thread, and the other end is cubic. One end of the cubic side locking rod 41 abuts against the inner wall E of the arc surface insulator, and the cylindrical end passes through the inverted U-shaped groove and is threadedly connected with the second nut 42 on the outer wall of the first fixing frame 1. When the pantograph arc surface insulator disassembly and fixing device is used, one end of the three-dimensional side locking rod 41 is hooked into the inner wall of the insulator, and then after being tightened by the second nut 42, the side locking rod 41 can be hooked on the inner wall of the insulator and fixed after being subjected to force. On the premise that the outer wall of the insulator is fixed all around, the position of the insulator in the ring outer wall fixing assembly is further limited, the fixing effect of the pantograph arc surface insulator disassembly and fixing device is enhanced, and the slippage of the arc surface insulator is reduced.

[0048] Of course, the inverted U-shaped groove can also be replaced by opening a plurality of through holes on the side wall of the first fixing frame 1, and the cylindrical end of the side locking rod 41 passes through the through holes and is fixed by the second nut 42, but the setting of the inverted U-shaped groove can make the loading and unloading of the side locking rod 41 more convenient. The second nut 42 of an embodiment of the utility model is a ram's horn nut.

[0049] like Figure 4 As shown, the first fixed frame 1 of an embodiment of the utility model includes a first outer frame 11 and a first inner frame 12. The first outer frame 11 is U-shaped, and the first inner frame 12 is arc-shaped. The inner diameter of the first inner frame 12 matches the outer diameter of the arc surface insulator, and the inner diameter of the first inner frame 12 should be slightly larger than the outer diameter of the arc surface insulator to ensure that the first inner frame 12 and the arc surface insulator can be gap-matched to prevent damage to the surface of the arc surface insulator during installation. The outer wall of the first inner frame 12 is fixedly connected to the inner wall of the first outer frame 11, and the inner wall size of the first outer frame 11 matches the outer wall diameter of the first inner frame 12. The first through hole 13 is provided at the connection position between the first outer frame 11 and the first inner frame 12, and passes through the side walls of the first outer frame 11 and the first inner frame 12, and the first nut 14 is fixedly arranged on the outer wall of the first outer frame 11. The two ends of the first outer frame 11 are respectively fixedly connected with fixed plates 15, and each fixed plate 15 is provided with an inverted U-shaped groove, and the inverted U-shaped groove of the fixed plate 15 is clamped with the side locking rod 41. Specifically, the inverted U-shaped groove of the fixing plate 15 is used to receive the side locking rod 41 and serves as a force when the second nut 42 is tightened.

[0050] In one embodiment of the present invention, two ends of the first inner frame 12 are respectively fixedly connected with connecting plates 16, and each connecting plate 16 has an inverted U-shaped groove. Figure 6 As shown, a through hole 22 is respectively formed at both ends of the second fixing frame 2 , and a third nut 21 is coaxially fixed to the through hole 22 , and the distance between the two through holes 22 matches the distance between the inverted U-shaped grooves on the connecting plate 16 .

[0051] The first fixing frame 1 and the second fixing frame are detachably connected by screws 5, and the screws 5 are sequentially passed through the inverted U-shaped groove of the connecting plate 16, the through hole 22 and the third nut 21 for threaded connection. For the convenience of operation, in actual use, the two screws 5 have been screwed into the two third nuts 21. The connecting plate 16 is used to receive the screws 5 and serves as a force point for tightening the screws 5 when the first fixing frame 1 and the second fixing frame 2 are fixed.

[0052] In one embodiment of the utility model, the first inner frame 12 is fixed to the inner wall of the first outer frame 11 by welding.

[0053] In one embodiment of the utility model, the first nut 14 is fixed to the outer wall of the first outer frame 11 by welding.

[0054] In one embodiment of the utility model, the third nut 21 is fixed to the outer wall of the second fixing frame 2 by welding.

[0055] It should be noted that the "inside" and "outside" of the pantograph arc insulator disassembly and fixing device of the present application are both based on the arc insulator, the inner wall is the side close to the arc insulator, and the outer wall is the side away from the arc insulator.

[0056] The fixing assembly 3 of one embodiment of the utility model further includes a gripping rod 32 and a bolt 33, and the two ends of the gripping rod 32 are respectively coaxially fixedly connected to one end of the fixing rod 31 and the screw portion of the bolt 33. The gripping rod 32 of one embodiment of the utility model adopts a hollow steel pipe, and the bolt 33 is a hexagonal bolt. The setting of the bolt 33 can facilitate the rotation of the gripping rod 32 using a hexagonal head. The screw 31 of one embodiment of the utility model is fixed to the gripping rod 32 by welding, and the bolt 33 is fixed to the gripping rod 32 by welding.

[0057] In one embodiment of the utility model, a plurality of washers 34 are sleeved on the fixing rod 31, and the washers 34 are located between the gripping rod 32 and the first nut 14. The number of washers 34 is selected according to the size of the arc surface insulator, and the length of the fixing rod 31 protruding from the first fixing frame 1 can be controlled by adjusting the number of washers 34, so as to adapt to fixing arc surface insulators of different sizes.

[0058] like Figure 7 As shown, when the pantograph curved insulator disassembly and fixing device of the present application is used to fix the curved insulator A, the installation steps are as follows:

[0059] First, the first inner frame 12 and the second fixed frame 2 are used to hold and tighten the arc vertical surface B of the outer ring of the arc surface insulator.

[0060] 1) Screw the screws 5 into the two third nuts 21 of the second fixing frame 2, and put the second fixing frame 2 into the inner side of the arc surface insulator.

[0061] 2) Hook the inverted U-shaped groove on the connecting plate 16 of the first inner frame 12 with the fixing assembly 3 into the inner side of the heads of the two screws 5 on the second fixing frame 2 .

[0062] 3) Tighten the two screws 5 alternately. When tightening, ensure that the lower edge of the first fixing frame 1 is flush with the lower edge of the arc insulator, and ensure that the first fixing frame 1 and the second fixing frame 2 are in effective contact with the arc vertical surface B of the insulator.

[0063] 4) Continue to tighten the two screws 5 alternately (when using for the first time, when the first fixing frame 1 and the second fixing frame 2 can hold the insulator tightly, record the required tightening torque value to ensure standard operation during subsequent use).

[0064] Second, using the fixing plate 15 on the first outer frame 11 and two sets of side wall fixing devices on the left and right sides, the side locking rod 41 is hooked into the inner wall of the insulator, and then the second nut 42 is tightened to tighten.

[0065] Third, by adjusting the number of gaskets 34 (completed before use), the securing rod 31 is made to protrude from the inner wall of the first fixed frame 1, and is fastened after supporting the arc vertical surface B of the outer surface of the arc insulator (in actual use, a flexible plastic pad needs to be added between the securing rod 31 and the outer surface of the insulator to prevent the securing rod 31 from damaging the surface of the insulator).

[0066] After it is completely tightened, remove the fastening screws of the upper fixing hole C and the lower fixing hole D of the insulator in turn.

[0067] It should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inside" and "outside" are all based on the directions or positional relationships shown in the accompanying drawings. Such expressions are only intended to make the description of the utility model simpler and more convenient, and do not indicate or imply that the referred parts must have a specific direction or be constructed and operated in a specific direction.

[0068] In addition, in this application, unless otherwise clearly specified and limited, "installation", "connection", "setting", "assembly" and other similar terms should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or the internal connection of two components. Those skilled in the art can understand the specific meanings of the above terms in this application according to the specific circumstances. In addition, the terms "first", "second", and "third" are used only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0069] The construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present utility model. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present utility model, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to several modifications still falling within the scope of the appended claims.

[0070] Additionally, in order to provide a concise description of example embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0071] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0072] The utility model has the following beneficial effects:

[0073] The pantograph arc surface insulator disassembly and fixing device of the utility model can fix the arc vertical surface of the insulator through the first fixing frame and the second fixing frame, and then screw the outer wall of the fixed insulator into the fixing rod, and use the side locking rod and the second nut to fix the inner wall of the insulator, so as to fix the insulator on the arc vertical surface and the inner wall of the insulator at the same time, and the fixation is more firm, ensuring that the insulator will not slip or rotate when disassembling the insulator, and the surface of the insulator will not be damaged during disassembly and assembly.

[0074] The above-mentioned embodiments are only further explanations of the utility model, and are not intended to limit the utility model in other forms. The utility model may also have other various embodiments. Without departing from the spirit and essence of the utility model, those skilled in the art may make various corresponding modifications and changes according to the utility model, but these corresponding modifications and changes shall fall within the protection scope of the utility model.

Claims

1. A pantograph curved insulator disassembly and fixing device, characterized in that: include: The ring outer wall fixing assembly comprises a first fixing frame and a second fixing frame connected in a ring shape and arranged to surround the outer wall of the arc surface insulator, the inner walls of the first fixing frame and the second fixing frame are both arc-shaped, the shapes and sizes of the inner walls of the first fixing frame and the second fixing frame match the outer wall of the arc surface insulator, the side wall of the first fixing frame is provided with a first through hole, the outer wall of the first fixing frame is fixedly equipped with a first nut, and the first nut is coaxially arranged with the first through hole; The fixing assembly includes a fixing rod, the outer wall of which is provided with an external thread, one end of which passes through the first nut and the first through hole in sequence to fix the outer wall of the arc surface insulator and is threadedly connected with the first nut.

2. The pantograph curved insulator disassembly and fixing device according to claim 1, characterized in that: The first fixing frame is detachably connected to the second fixing frame.

3. The pantograph curved insulator disassembly and fixing device according to claim 1, characterized in that: One end of the first fixing frame is rotatably connected to one end of the second fixing frame.

4. The pantograph curved insulator disassembly and fixing device according to claim 1, characterized in that: The heights of the first fixing frame and the second fixing frame are both the same as the height of the vertical surface of the arc of the arc insulator.

5. The pantograph curved insulator disassembly and fixing device according to claim 1, characterized in that: It also includes several groups of side wall fixing components, the side wall fixing components include side locking rods and second nuts, and the side walls of the first fixing frame are provided with several inverted U-shaped grooves; The side locking rod is L-shaped, one end is cylindrical, the outer wall is provided with external threads, and the other end is cubic; One cubic end of the side locking rod abuts against the inner wall of the arc insulator, and one cylindrical end passes through the inverted U-shaped groove and is threadedly connected to the second nut on the outer wall of the first fixing frame.

6. The pantograph curved insulator disassembly and fixing device according to claim 5, characterized in that: The first fixed frame includes a first outer frame and a first inner frame; The first outer frame is U-shaped, the first inner frame is arc-shaped, and the inner diameter of the first inner frame matches the outer diameter of the arc surface insulator; The outer wall of the first inner frame is fixedly connected to the inner wall of the first outer frame, and the size of the inner wall of the first outer frame matches the diameter of the outer wall of the first inner frame; The first through hole is provided at a connection position between the first outer frame and the first inner frame, and passes through the side walls of the first outer frame and the first inner frame, and the first nut is fixedly disposed on the outer wall of the first outer frame; Both ends of the first outer frame are respectively fixedly connected with fixing plates, each fixing plate is provided with an inverted U-shaped groove, and the inverted U-shaped groove of the fixing plate is clamped with the side locking rod.

7. The pantograph curved insulator disassembly and fixing device according to claim 6, characterized in that: The two ends of the first inner frame are respectively fixedly connected with connecting plates, and each connecting plate is provided with an inverted U-shaped groove; The two ends of the second fixing frame are respectively provided with a through hole, and a third nut is coaxially fixed to the through hole, and the spacing between the two through holes matches the spacing of the inverted U-shaped grooves on the connecting plate; The first fixing frame and the second fixing frame are detachably connected via screws, and the screws sequentially pass through the inverted U-shaped groove of the connecting plate, the through hole, and are threadedly connected with the third nut.

8. The pantograph curved insulator disassembly and fixing device according to claim 7, characterized in that: The first inner frame is fixed to the inner wall of the first outer frame by welding; The first nut is fixed to the outer wall of the first outer frame by welding; The third nut is fixed to the outer wall of the second fixing frame by welding.

9. The pantograph curved insulator disassembly and fixing device according to claim 1, characterized in that: The retaining assembly also includes a gripping rod and a bolt, and two ends of the gripping rod are respectively coaxially fixedly connected to one end of the retaining rod and a screw portion of the bolt.

10. The pantograph curved insulator disassembly and fixing device according to claim 9, characterized in that: A plurality of washers are sleeved on the fixing rod, and the washers are located between the gripping rod and the first nut. The number of the washers is selected according to the size of the arc surface insulator.

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