Locking tool for overhauling isolating surface disconnecting link of transformer substation

Abstract

The utility model provides a locking tool for overhauling an isolating surface disconnecting link of a transformer substation. The locking tool comprises two connecting rods; the first locking piece is arranged between the two connecting rods, the first locking piece is connected with the two connecting rods, the first locking piece is provided with a first locking space, the first locking space is used for containing the limiting rod, and the size of the first locking space is adjustable; and the second locking component comprises a second locking piece and a third locking piece, the two ends of the second locking piece are connected with the two connecting rods correspondingly, the third locking piece and the second locking piece are connected to define a second locking space, and the second locking space is used for containing a to-be-fixed rod so that the second locking component can limit the to-be-fixed rod. According to the utility model, the problem of safety accidents caused by misoperation of the transmission rod for overhauling the isolation surface disconnecting link in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of maintenance isolation surface knife switches, in particular to a locking tool for maintenance isolation surface knife switches of transformer substations. Background Art

[0002] The maintenance isolation surface knife switch is a knife switch with one side de-energized and the other side energized. The maintenance isolation surface knife switch includes a moving contact, a fixed contact and a transmission rod. The fixed contact is connected to the power supply, and the moving contact is connected to the external electrical appliance. The fixed contact is energized and the moving contact is de-energized. The moving contact is moved by the transmission rod to contact the fixed contact, which can make the external electrical appliance energized. However, when inspecting this energized knife switch and external electrical appliances, it is easy for maintenance personnel to accidentally swing the transmission rod, causing the moving contact and the fixed contact to accidentally contact, which in turn leads to a safety accident of electric shock for the maintenance personnel. Utility Model Content

[0003] The main purpose of the utility model is to provide a locking tool for a maintenance isolation surface knife switch of a transformer substation, so as to solve the problem in the prior art that a transmission rod of the maintenance isolation surface knife switch is misoperated and causes a safety accident.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a locking tool for a substation maintenance isolation surface knife switch, comprising: two connecting rods; a first locking piece, the first locking piece is arranged between the two connecting rods, the first locking piece is connected to the two connecting rods, the first locking piece has a first locking space, the first locking space is used to accommodate a limiting rod, and the size of the first locking space can be adjusted; a second locking component, the second locking component includes a second locking piece and a third locking piece, the two ends of the second locking piece are respectively connected to the two connecting rods, the third locking piece and the second locking piece are connected to enclose a second locking space, the second locking space is used to accommodate the rod to be fixed, so that the second locking component limits the rod to be fixed.

[0005] Furthermore, the first locking member includes two first locking parts, which are arranged opposite to each other along the extension direction of the connecting rod. The two first locking parts and the two connecting rods together form a first locking space. Along the extension direction of the connecting rod, the distance between the two first locking parts can be adjusted to adjust the size of the first locking space; each first locking part is provided with a first arc-shaped groove, and the groove wall of the first arc-shaped groove is used to abut against the circumferential outer wall of the limit rod.

[0006] Furthermore, each connecting rod is provided with a plurality of first fastening holes, and the plurality of first fastening holes are arranged at intervals along the extension direction of the connecting rod so as to be detachably connected to any one of the plurality of first fastening holes through each first locking portion, so that the distance between the two first locking portions can be adjusted.

[0007] Furthermore, second fastening holes are provided at both ends of each first locking part, and the two ends of each first locking part are respectively provided in one-to-one correspondence with the two connecting rods, so that the first fastener is passed through the second fastening hole on one end of each first locking part and the first fastening hole on the corresponding connecting rod, so that each first locking part and the first fastening hole can be detachably connected.

[0008] Furthermore, a locking tool for a substation maintenance isolation surface knife switch also includes a connecting shaft, and each first locking part is provided with a third fastening hole, so that the connecting shaft is passed through the third fastening holes on the two first locking parts in sequence to fasten the two first locking parts; wherein, there are two connecting shafts and two third fastening holes, and the two third fastening holes and the two connecting shafts are arranged in a one-to-one correspondence.

[0009] Furthermore, a fourth fastening hole is provided on the second locking member, and a fifth fastening hole is provided on the third locking member, so that the second fastening member passes through the fourth fastening hole and the fifth fastening hole to fasten the second locking member and the third locking member.

[0010] Furthermore, a locking tool for a substation maintenance isolation surface knife switch also includes a snap ring, the fixing rod is passed through the snap ring, a second arc groove is provided on the second locking piece, and a third arc groove is provided on the third locking piece. The second arc groove and the third arc groove are both engaged with the snap ring, so that the second locking piece and the third locking piece jointly limit the snap ring.

[0011] Furthermore, the clamping ring includes two clamping half rings, the circumferential inner walls of the two clamping half rings are in contact with the circumferential outer wall of the rod to be fixed; the two clamping half rings are respectively arranged in one-to-one correspondence with the second arc groove and the third arc groove; wherein, the central axes of the second arc groove and the third arc groove are arranged to coincide with each other, and the diameters of the second arc groove and the third arc groove are the same.

[0012] Furthermore, a first groove is provided on the groove wall of the second arc-shaped groove, a second groove is provided on the groove wall of the third arc-shaped groove, and a protrusion is provided on the circumferential outer wall of each clamping half ring, so that the protrusion on each clamping half ring can be passed through into the corresponding first groove or second groove, so that the second arc-shaped groove or the third arc-shaped groove and the corresponding clamping half ring are clamped.

[0013] Furthermore, a protective sleeve is provided on the rod to be fixed, the third locking piece has a clamping end surface, the clamping end surface is used to abut against the protective sleeve, and the second locking piece is provided with a second arc groove, the inner groove wall of the second arc groove is used to abut against the protective sleeve.

[0014] Applying the technical solution of the present invention, a locking tool for a substation maintenance isolation surface knife switch includes two connecting rods, a first locking piece and a second locking part, the second locking part includes a second locking piece and a third locking piece, the third locking piece and the second locking piece are connected to enclose a second locking space, and the first locking piece has a first locking space. By arranging the limit rod in the first locking space, the two connecting rods and the limit rod are connected, and the limit rod and the second locking part are connected. By restricting the rod to be fixed in the second locking space, the second locking part can fix the rod to be fixed, preventing the rod to be fixed from swinging. At the same time, since the limit rod and the second locking part are connected, the limit rod can fix the second locking part, preventing the second locking part from shaking relative to the limit rod, and thus preventing the rod to be fixed from swinging relative to the limit rod. The present application connects the fixed limit rod and the rod to be fixed together through two connecting rods, the first locking part and the second locking part, which can prevent the rod to be fixed from swinging, thereby solving the problem in the prior art that the transmission rod of the maintenance isolation surface knife switch is misoperated and causes safety accidents. At the same time, the size of the first locking space can be adjusted, so that the present application is suitable for selecting limit rods of different diameters, thereby expanding the scope of application of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings constituting part of this application are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0016] Figure 1 A structural schematic diagram of an embodiment of a locking tool for a maintenance isolation face switch of a substation according to the utility model is shown;

[0017] Figure 2 The figure shows an assembly diagram of a first locking member, a connecting shaft and a connecting rod of a locking tool for a maintenance isolation face knife switch of a substation according to the utility model;

[0018] Figure 3 A schematic structural diagram of a clamping ring of a locking tool for a maintenance isolation face knife switch of a substation according to the utility model is shown;

[0019] Figure 4 A schematic structural diagram of a second locking member and a third locking member of a locking tool for a maintenance isolation surface knife switch of a substation according to the present invention (when the transmission rod of the maintenance isolation surface knife switch is a circular transmission disc structure) is shown;

[0020] Figure 5 A structural schematic diagram of the third locking member of a locking tool for a substation maintenance isolation surface switch according to the utility model is shown (when the transmission rod of the maintenance isolation surface switch is a U-shaped or diamond-shaped clamp structure).

[0021] The above drawings include the following reference numerals:

[0022] 10. Connecting rod; 20. First locking member; 211. First locking space; 30. Second locking member; 40. Third locking member; 411. Second locking space; 22. First arcuate groove; 11. First fastening hole; 50. Connecting shaft; 31. Fourth fastening hole; 60. Snap ring; 61. Snap-fit ​​half ring; 33. Second arcuate groove; 41. Third arcuate groove; 63. Protrusion; 222. Second groove; 71. Clamping end face; 72. First fastener; 21. First locking part. DETAILED DESCRIPTION

[0023] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0024] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to actual proportional relationships. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values ​​should be interpreted as being merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0025] In the description of this application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of this application; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0026] Please refer to Figures 1 to 5 The utility model provides a locking tool for a substation maintenance isolation surface knife switch, comprising: two connecting rods 10; a first locking piece 20, the first locking piece 20 is arranged between the two connecting rods 10, the first locking piece 20 is connected to the two connecting rods 10, the first locking piece 20 has a first locking space 211, the first locking space 211 is used to accommodate a limiting rod, and the size of the first locking space 211 is adjustably set; a second locking component, the second locking component comprises a second locking piece 30 and a third locking piece 40, the two ends of the second locking piece 30 are respectively connected to the two connecting rods 10, the third locking piece 40 and the second locking piece 30 are connected to enclose a second locking space 411, the second locking space 411 is used to accommodate a rod to be fixed, so that the second locking component limits the rod to be fixed.

[0027] A locking tool for a substation maintenance isolation surface knife switch according to the present invention includes two connecting rods 10, a first locking piece 20 and a second locking component, the second locking component includes a second locking piece 30 and a third locking piece 40, the third locking piece 40 and the second locking piece 30 are connected to enclose a second locking space 411, and the first locking piece 20 has a first locking space 211. By setting the limit rod in the first locking space 211, the two connecting rods 10 and the limit rod are connected, and the limit rod and the second locking part 30 are connected. By limiting the rod to be fixed in the second locking space 411, the second locking part can fix the rod to be fixed to prevent the rod to be fixed from swinging. At the same time, since the limit rod and the second locking part 30 are connected, the limit rod can fix the second locking part 30 to prevent the second locking part from shaking relative to the limit rod, and thus prevent the rod to be fixed from swinging relative to the limit rod. The present application connects the fixed limit rod and the rod to be fixed together through two connecting rods 10, the first locking part 20 and the second locking part, which can prevent the rod to be fixed from swinging, thereby solving the problem in the prior art that the transmission rod of the maintenance isolation surface knife switch is misoperated and causes a safety accident. At the same time, the size of the first locking space 211 can be adjusted, so that the present application is suitable for selecting limit rods of different diameters, thereby expanding the scope of application of the present application.

[0028] Specifically, the limiting rod is a cement column, and the rod to be fixed is a transmission rod of the maintenance isolation surface knife switch; the specification model of the connecting rod 10 is 15*30*650mm.

[0029] In this embodiment, the first locking member 20 includes two first locking portions 21, and the two first locking portions 21 are arranged opposite to each other along the extension direction of the connecting rod 10. The two first locking portions 21 and the two connecting rods 10 together form a first locking space 211. Along the extension direction of the connecting rod 10, the distance between the two first locking portions 21 can be adjusted to adjust the size of the first locking space 211; each first locking portion 21 is provided with a first arcuate groove 22, and the groove wall of the first arcuate groove 22 is used to abut against the circumferential outer wall of the limit rod.

[0030] Specifically, by adjusting the distance between the two first locking parts 21 in the extension direction of the connecting rod 10, the size of the first locking space 211 can be adjusted, further ensuring that the first locking member 20 can be suitable for limit rods of different diameters, thereby expanding the scope of application of the present utility model; through the abutment between the groove wall of the first arc-shaped groove 22 and the circumferential outer wall of the limit rod, it is ensured that the two first locking parts 21 can fully abut against the limit rod, thereby ensuring the reliability of the limit connection between the first locking member 20 and the limit rod.

[0031] Optionally, the specifications of the two first locking parts 21 may be different. For example, the specifications of one first locking part 21 are 488*40*40 mm, and the specifications of the other first locking part 21 are 438*40*40 mm.

[0032] In this embodiment, each connecting rod 10 is provided with a plurality of first fastening holes 11, and the plurality of first fastening holes 11 are arranged at intervals along the extension direction of the connecting rod 10 so as to be detachably connected to any one of the plurality of first fastening holes 11 through each first locking portion 21, so that the distance between the two first locking portions 21 can be adjusted.

[0033] Specifically, each first locking part 21 is detachably connected to any one of the multiple first fastening holes 11, so that the distance between the two first locking parts 21 can be adjusted, so that the size of the first locking space 211 is easy to adjust, thereby reducing the difficulty of using the locking tool of the substation maintenance isolation surface knife switch of the utility model.

[0034] In this embodiment, second fastening holes are provided at both ends of each first locking part 21, and the two ends of each first locking part 21 are respectively provided in one-to-one correspondence with the two connecting rods 10, so that the first fastener 72 is passed through the second fastening hole on one end of each first locking part 21 and the first fastening hole 11 on the corresponding connecting rod 10, so that each first locking part 21 and the first fastening hole 11 can be detachably connected.

[0035] Specifically, the first fastener 72 is passed through the second fastening hole on one end of each first locking part 21 and the first fastening hole 11 on the corresponding connecting rod 10, so that each first locking part 21 and the first fastening hole 11 can be detachably connected. This not only ensures the connection reliability between the first locking part 20 and the connecting rod 10, but also makes it easy to change the first fastening hole 11 connected to each first locking part 21, further ensuring that the size of the first locking space 211 is easy to adjust.

[0036] In this embodiment, a locking tool for a substation maintenance isolation surface knife switch also includes a connecting shaft 50, and each first locking part 21 is provided with a third fastening hole, so that the connecting shaft 50 is passed through the third fastening holes on the two first locking parts 21 in sequence to fasten the two first locking parts 21; wherein, there are two connecting shafts 50 and two third fastening holes, and the two third fastening holes and the two connecting shafts 50 are arranged in a one-to-one correspondence.

[0037] Specifically, the connecting shaft 50 is passed through the third fastening holes on the two first locking parts 21 in sequence to fasten the two first locking parts 21, thereby ensuring the structural stability of the first locking member 20 and the reliability of the limiting connection of the first locking member 20 to the limiting rod.

[0038] Specifically, the specification of the connecting shaft 50 is M10*400mm.

[0039] In this embodiment, a fourth fastening hole 31 is provided on the second locking member 30, and a fifth fastening hole is provided on the third locking member 40, so that the second fastening member can pass through the fourth fastening hole 31 and the fifth fastening hole to fasten the second locking member 30 and the third locking member together.

[0040] Specifically, the second fastener is passed through the fourth fastening hole 31 and the fifth fastening hole to fasten the second locking member 30 and the third locking member, thereby ensuring the connection reliability of the second locking member 30 and the third locking member, thereby ensuring the structural stability of the second locking space 411, and further ensuring that the second locking member can fix the fixed rod.

[0041] Specifically, the first fastener 72 and the second fastener are both bolts.

[0042] When the transmission rod of the isolation surface knife switch is a circular transmission disc structure;

[0043] In this embodiment, a locking tool for a substation maintenance isolation surface knife switch also includes a snap ring 60, the fixing rod is passed through the snap ring 60, a second arc groove 33 is provided on the second locking member 30, and a third arc groove 41 is provided on the third locking member 40. The second arc groove 33 and the third arc groove 41 are both engaged with the snap ring 60, so that the second locking member 30 and the third locking member 40 jointly limit the snap ring 60.

[0044] Specifically, the second locking member 30 and the third locking member 40 jointly clamp the clamping ring 60 so that the clamping ring 60 can clamp the rod to be fixed to limit and fix the rod to be fixed and prevent the rod to be fixed from swinging.

[0045] Specifically, the snap ring 60 is a flange disc, and the specification of the snap ring 60 is 145*30, Ø145mm; the specification of the second locking member 30 is 366*86.5*30, Ø175mm; the specification of the third locking member 40 is 260*86.5*30, Ø175mm;

[0046] In this embodiment, the clamping ring 60 includes two clamping half rings 61, and the circumferential inner walls of the two clamping half rings are in contact with the circumferential outer wall of the rod to be fixed; the two clamping half rings 61 are respectively arranged in a one-to-one correspondence with the second arc groove 33 and the third arc groove 41; wherein, the central axes of the second arc groove 33 and the third arc groove 41 are arranged to coincide with each other, and the diameters of the second arc groove 33 and the third arc groove 41 are the same.

[0047] Specifically, the circumferential inner walls of the two clamping half rings are in contact with the circumferential outer walls of the rod to be fixed, thereby ensuring that the clamping ring 60 can fully clamp the rod to be fixed; the central axes of the second arc groove 33 and the third arc groove 41 are arranged to coincide with each other, and the diameters of the second arc groove 33 and the third arc groove 41 are the same, thereby ensuring that the shapes of the second arc groove 33 and the third arc groove 41 are adapted to the shape of the clamping half ring 61, thereby ensuring that the second locking member 30 and the third locking member 40 jointly clamp the clamping ring 60.

[0048] In this embodiment, a first groove is provided on the groove wall of the second arc groove 33, a second groove 222 is provided on the groove wall of the third arc groove 41, and a protrusion 63 is provided on the circumferential outer wall of each clamping half ring 61, so that the protrusion 63 on each clamping half ring 61 can be passed through the corresponding first groove or second groove 222 to clamp the second arc groove 33 or the third arc groove 41 and the corresponding clamping half ring 61.

[0049] Specifically, the protrusion 63 on each snap-fitting half ring 61 is passed through the corresponding first groove or second groove 222 so that the second arc groove 33 or the third arc groove 41 and the corresponding snap-fitting half ring 61 are snap-fitted, ensuring that the second locking member 30 and the third locking member 40 are fully connected to the snap ring 60.

[0050] In specific implementation, the snap ring 60 is installed first, then the second locking member 30 and the third locking member 40 are installed, then the connecting rod 10 is installed, then the first locking member 20 is installed, and finally the first fastener 72 and the second fastener are tightened.

[0051] When the transmission rod of the maintenance isolation surface knife switch is a U-shaped or diamond-shaped clamp structure:

[0052] In this embodiment, a protective sleeve is provided on the rod to be fixed, the third locking piece 40 has a clamping end face 71, and the clamping end face 71 is used to abut against the protective sleeve. The second locking piece 30 is provided with a second arc groove 33, and the inner groove wall of the second arc groove 33 is used to abut against the protective sleeve.

[0053] Specifically, the clamping end surface 71 and the second arc groove 33 abut against the protective cover, so that the second locking member 30 and the third locking member 40 can limit and fix the rod to be fixed, thereby preventing the rod to be fixed from shaking.

[0054] Specifically, the specifications of the third locking member 40 are 272 mm*37 mm*30 mm.

[0055] During specific implementation, the second locking member 30 and the third locking member 40 are installed first, then the connecting rod 10 is installed, then the first locking member 20 is installed, and finally the first fastening member 72 and the second fastening member are tightened.

[0056] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0057] The utility model provides a locking tool for a substation maintenance isolation surface knife switch, which has the advantages of being stable and reliable. The locking tool for a substation maintenance isolation surface knife switch can withstand a torque much greater than the torque generated when the knife switch transmission rod is transmitted. The maximum torque of the knife switch transmission connecting rod is about 30N*m. After actual measurement with an on-site torque wrench, the knife switch transmission rod does not move at all when the torque is reached to 40N*m. The utility model provides a locking tool for a substation maintenance isolation surface knife switch, which has the advantage of being easy to install. Because the structure is relatively simple, it can be installed in no more than five minutes by the cooperation of two operators, and more time can be reserved for other links. The utility model provides a locking tool for a substation maintenance isolation surface knife switch, which can realize hard locking of the knife switch transmission rod and also provide visual reminders to construction personnel. The utility model provides a locking tool for a substation maintenance isolation surface knife switch, which has a wide range of applications. According to knife switches of different voltage levels and models, the fixing bolts can be adjusted, and retaining rings 60 of different shapes can be replaced, and the tool can be installed on different knife switch transmission rods.

[0058] A locking tool for a substation maintenance isolation surface knife switch according to the present invention includes two connecting rods 10, a first locking piece 20 and a second locking component, the second locking component includes a second locking piece 30 and a third locking piece 40, the third locking piece 40 and the second locking piece 30 are connected to enclose a second locking space 411, and the first locking piece 20 has a first locking space 211. By setting the limit rod in the first locking space 211, the two connecting rods 10 and the limit rod are connected, and the limit rod and the second locking part 30 are connected. By limiting the rod to be fixed in the second locking space 411, the second locking part can fix the rod to be fixed to prevent the rod to be fixed from swinging. At the same time, since the limit rod and the second locking part 30 are connected, the limit rod can fix the second locking part 30 to prevent the second locking part from shaking relative to the limit rod, and thus prevent the rod to be fixed from swinging relative to the limit rod. The present application connects the fixed limit rod and the rod to be fixed together through two connecting rods 10, the first locking part 20 and the second locking part, which can prevent the rod to be fixed from swinging, thereby solving the problem in the prior art that the transmission rod of the maintenance isolation surface knife switch is misoperated and causes a safety accident. At the same time, the size of the first locking space 211 can be adjusted, so that the present application is suitable for selecting limit rods of different diameters, thereby expanding the scope of application of the present application.

[0059] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0060] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0061] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A locking tool for a transformer substation maintenance isolation face switch, characterized in that: include: Two connecting rods (10); a first locking member (20), the first locking member (20) being arranged between the two connecting rods (10), the first locking member (20) being connected to the two connecting rods (10), the first locking member (20) having a first locking space (211), the first locking space (211) being used to accommodate a limiting rod, and the size of the first locking space (211) being adjustable; A second locking component, the second locking component includes a second locking component (30) and a third locking component (40), the two ends of the second locking component (30) are respectively connected to the two connecting rods (10), the third locking component (40) and the second locking component (30) are connected to enclose a second locking space (411), and the second locking space (411) is used to accommodate the rod to be fixed, so that the second locking component limits the rod to be fixed.

2. The locking tool for the isolation switch of a substation maintenance surface according to claim 1 is characterized in that: The first locking member (20) includes two first locking portions (21), the two first locking portions (21) are arranged opposite to each other along the extension direction of the connecting rod (10), the two first locking portions (21) and the two connecting rods (10) together form the first locking space (211), and the distance between the two first locking portions (21) along the extension direction of the connecting rod (10) can be adjusted to adjust the size of the first locking space (211); each of the first locking portions (21) is provided with a first arcuate groove (22), and the groove wall of the first arcuate groove (22) is used to abut against the circumferential outer wall of the limiting rod.

3. The locking tool for the isolation switch of the substation maintenance surface according to claim 2 is characterized in that: Each of the connecting rods (10) is provided with a plurality of first fastening holes (11), and the plurality of first fastening holes (11) are spaced apart along the extension direction of the connecting rod (10) so as to be detachably connected to any one of the plurality of first fastening holes (11) through each of the first locking portions (21), so that the distance between the two first locking portions (21) can be adjusted.

4. The locking tool for the isolation switch of the substation maintenance surface according to claim 3 is characterized in that: Both ends of each first locking portion (21) are provided with a second fastening hole, and the two ends of each first locking portion (21) are respectively provided in one-to-one correspondence with the two connecting rods (10), so that a first fastener (72) is passed through the second fastening hole on one end of each first locking portion (21) and the first fastening hole (11) on the corresponding connecting rod (10), so that each first locking portion (21) and the first fastening hole (11) can be detachably connected.

5. The locking tool for the isolation switch of a substation maintenance surface according to claim 2, characterized in that: The locking tool for the transformer substation maintenance isolation surface knife switch also includes a connecting shaft (50), and each of the first locking parts (21) is provided with a third fastening hole, so that the connecting shaft (50) is sequentially passed through the third fastening holes on the two first locking parts (21) to fasten the two first locking parts (21); wherein, there are two connecting shafts (50), there are two third fastening holes, and the two third fastening holes and the two connecting shafts (50) are arranged in a one-to-one correspondence.

6. The locking tool for the isolation switch of a substation maintenance surface according to claim 1, characterized in that: The second locking member (30) is provided with a fourth fastening hole (31), and the third locking member (40) is provided with a fifth fastening hole, so that the second fastening member (30) and the third locking member (40) are fastened together by passing the second fastening member through the fourth fastening hole (31) and the fifth fastening hole.

7. The locking tool for the isolation switch of a substation maintenance surface according to claim 1, characterized in that: The locking tool for the transformer substation maintenance isolation surface knife switch also includes a snap ring (60), the rod to be fixed is inserted into the snap ring (60), the second locking member (30) is provided with a second arc groove (33), and the third locking member (40) is provided with a third arc groove (41), the second arc groove (33) and the third arc groove (41) are both engaged with the snap ring (60), so that the second locking member (30) and the third locking member (40) jointly limit the snap ring (60).

8. The locking tool for the isolation switch of the substation maintenance surface according to claim 7, characterized in that: The clamping ring (60) includes two clamping half rings (61), and the circumferential inner walls of the two clamping half rings (61) are in contact with the circumferential outer wall of the rod to be fixed; the two clamping half rings (61) are respectively arranged in a one-to-one correspondence with the second arc-shaped groove (33) and the third arc-shaped groove (41); wherein the central axes of the second arc-shaped groove (33) and the third arc-shaped groove (41) are arranged to coincide with each other, and the diameters of the second arc-shaped groove (33) and the third arc-shaped groove (41) are the same.

9. The locking tool for the isolation switch of the substation maintenance surface according to claim 8, characterized in that: A first groove is provided on the groove wall of the second arc-shaped groove (33), a second groove (222) is provided on the groove wall of the third arc-shaped groove (41), and a protrusion (63) is provided on the circumferential outer wall of each of the clamping half rings (61), so that the protrusion (63) on each of the clamping half rings (61) can be passed through the corresponding first groove or the second groove (222), so that the second arc-shaped groove (33) or the third arc-shaped groove (41) and the corresponding clamping half ring (61) are clamped.

10. The locking tool for the isolation switch of a substation maintenance surface according to claim 1, characterized in that: A protective sleeve is provided on the rod to be fixed, the third locking piece (40) has a clamping end surface (71), and the clamping end surface (71) is used to abut against the protective sleeve. The second locking piece (30) is provided with a second arc-shaped groove (33), and the inner groove wall of the second arc-shaped groove (33) is used to abut against the protective sleeve.

Images