Clamp type disconnecting switch ground maintenance dismounting tool

Abstract

The invention discloses a dismounting tool for ground maintenance of a clamp type disconnecting switch. Comprising a base, connecting holes are formed in the two ends of the base, vertical rods are inserted into the connecting holes, and first studs are arranged at the upper ends of the vertical rods; the two ends of the top plate are provided with sleeve holes sleeving the first studs, and the top plate can ascend and descend relative to the first studs; the two sets of fastening nuts are in threaded connection with the first studs on the two vertical rods correspondingly and used for clamping the top plate; the bottom of the positioning supporting sleeve is borne on the base, and a vertically-extending center hole is formed in the upper end face; the upper end of the pressure applying mechanism is detachably mounted on the top plate. According to the tool, the positioning supporting sleeve provides an accurate positioning reference for pin shaft dismounting through the center hole in the upper end face, and secondary damage such as pin shaft bending and clamp body deformation caused by deviation of the force application direction during traditional manual knocking is effectively prevented. The stable and controllable pressure provided by the pressure applying mechanism replaces the impact force of manual knocking and can uniformly act on the pin shaft, so that the probability of equipment damage is reduced.

Description

Technical Field

[0001] This invention relates to the field of disconnector maintenance technology, and in particular, to a clamp-type ground inspection and disassembly tool for disconnectors. Background Technology

[0002] In the power transmission and transformation network, clamp-type disconnect switches are important electrical equipment, undertaking the functions of circuit isolation and connection. Their operating status is directly related to the safety and stability of the power system. Due to long-term exposure to the complex outdoor environment, the components of disconnect switches are susceptible to factors such as wind, rain, dust, and temperature differences, resulting in failures such as wear, corrosion, or jamming. Therefore, regular inspection and maintenance are required.

[0003] In the operation and maintenance of power transmission and transformation equipment, the stable operation of clamp-type disconnect switches is crucial to power grid safety. The clamping part of this type of equipment achieves rotational connection through pins. As a core connecting component, the pin is subjected to long-term mechanical stress and outdoor environmental corrosion, making it prone to rust, deformation, or jamming. Replacing the entire switch set is the simplest maintenance solution, but it wastes resources, and the factory production cycle and power station maintenance cycle are longer, slowing down the overall maintenance work and affecting power restoration time. Regularly disassembling, inspecting, or replacing the pins is obviously a more economical and time-saving operation. However, currently, pin disassembly is usually done manually. Operators use hammers and punches to apply external force to force the pins out, which is cumbersome and prone to deviation, causing structural damage. Summary of the Invention

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a clamp-type disconnector switch ground maintenance and disassembly fixture.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A clamp-type disconnector switch ground maintenance and disassembly fixture includes: a base with connecting holes at both ends, through which vertical rods are inserted, and a first stud at the upper end of the vertical rod; a top plate with sleeve holes at both ends for fitting the first studs, the top plate being able to move up and down relative to the first studs; fastening nuts, having two sets of first studs threadedly connected to two vertical rods respectively, the two fastening nuts in the same set being located above and below the top plate respectively, for clamping the top plate; a positioning support sleeve, the bottom of which is supported by the base, and the upper end having a vertically extending center hole; and a pressure mechanism, the upper end of which is detachably installed on the top plate, and the lower end having a lifting and lowering pressure pin.

[0007] Furthermore, the bottom of the positioning support sleeve is provided with a support expansion section.

[0008] Furthermore, the connecting hole is a threaded hole, and the bottom of the vertical rod is provided with a second stud that is adapted to the threaded hole. A preload nut is threadedly connected to the second stud, and the preload nut fits into the base.

[0009] Furthermore, it also includes an L-shaped fixing block. The upper end of the pressure applying mechanism is provided with an outwardly expanding ring. Multiple L-shaped fixing blocks are arranged around the outward expanding ring. The upper end of the L-shaped fixing block and the top plate are provided with corresponding holes for connection and fixation by screws. The bottom of the L-shaped fixing block is provided with a hook block to support the outward expanding ring.

[0010] Furthermore, the top plate is provided with two sets of threaded holes.

[0011] Furthermore, the upper surface of the base is provided with a positioning groove for the bottom of the positioning support sleeve to be embedded.

[0012] Furthermore, the top wall of the pressure applying mechanism is provided with a column, and the upper end of the column is provided with a limiting head with a profile larger than the column. There is a gap between the limiting head and the top wall of the pressure applying mechanism that is adapted to the thickness of the top plate. The top plate is provided with a positioning hole, the column passes through the positioning hole, and the top plate is located between the limiting head and the top wall of the pressure applying mechanism.

[0013] Furthermore, the top plate has an inlet / outlet slot on its side that communicates with the positioning hole and whose width is adapted to the column. The width of the inlet / outlet slot is smaller than the diameter of the positioning hole. The upper end face of the limiting head has a slot that extends downward. The slot extends to the column and forms through-holes on both sides in the width direction of the column. A positioning column is inserted into the slot. The two sides of the positioning column protrude through-holes and fit against the inner wall of the positioning hole.

[0014] Furthermore, the column, the limiting head, and the positioning column are provided in two sets, and the upper ends of the two positioning columns are connected in series by a crossbar.

[0015] Furthermore, the pressure-applying mechanism is a screw press.

[0016] The present invention has the following beneficial effects:

[0017] This fixture enables ground-based maintenance and disassembly of the disconnector switch pins, eliminating the need for operators to climb and carry tools, thus improving safety. The positioning support sleeve within the fixture provides a precise positioning reference for pin disassembly via a central hole on its upper surface, effectively preventing secondary damage such as pin bending and clamp deformation caused by misaligned force during traditional manual hammering. The stable and controllable pressure provided by the pressure application mechanism replaces the impact force of manual hammering, applying evenly to the pins and reducing the probability of equipment damage. The height of the top plate can be flexibly adjusted using a fastening nut, adapting to the pin disassembly needs of different disconnector switch specifications, demonstrating strong versatility. Targeted disassembly of the pins allows for the replacement of the pins or clamp 102, avoiding the resource waste caused by replacing the entire switch assembly, reducing maintenance costs, and ensuring timely power supply to the power system.

[0018] In addition to the objectives, features, and advantages described above, the present invention has other objectives, features, and advantages. The invention will now be described in further detail with reference to the figures. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0020] Figure 1 This is a schematic diagram of the usage state structure of one embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of another usage state structure of one embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the overall structure of one embodiment of the present invention;

[0023] Figure 4 yes Figure 3 A schematic diagram of the decomposed state structure;

[0024] Figure 5 This is a partial structural schematic diagram of another embodiment of the present invention;

[0025] Figure 6 yes Figure 5 A schematic diagram of the decomposed state structure;

[0026] Figure 7 yes Figure 6 Enlarged view of point A;

[0027] Figure 8 yes Figure 5 A partial structural diagram of the top plate.

[0028] Legend:

[0029] Base 100, connecting hole 110, vertical rod 120, first stud 121, second stud 122, preload nut 123, positioning groove 130;

[0030] Top plate 200, sleeve hole 210, threaded hole 201, positioning hole 220, inlet / outlet 221;

[0031] 300 fastening nut;

[0032] Positioning support sleeve, center hole 400, support expansion 410, first positioning support sleeve 401, second positioning support sleeve 402;

[0033] Pressure applying mechanism 500, pressure pin 501, outer expansion ring 502, column 510, through outlet 511, limit head 520, slot 521, positioning post 530, crossbar 540;

[0034] L-shaped fixing block 600, hook block 610;

[0035] Clamp-type disconnect switch 101, clamp 102, positioning guide sleeve 103. Detailed Implementation

[0036] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0038] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0039] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0040] Please refer to Figure 1 and Figure 2 A preferred embodiment of the present invention provides a ground maintenance and disassembly tool for a clamp-type disconnect switch, comprising a base 100, a top plate 200, a fastening nut 300, a positioning support sleeve, and a pressure application mechanism 500.

[0041] The base 100 has connection holes 110 at both ends, and a vertical rod 120 is inserted into the connection hole 110. A first stud 121 is provided at the upper end of the vertical rod 120. The connection hole 110 extends vertically.

[0042] The top plate 200 has sleeve holes 210 at both ends for fitting onto the first stud 121, and the sleeve holes 210 extend vertically. The top plate 200 can move up and down relative to the first stud 121.

[0043] The fastening nut 300 has two sets of first studs 121 that are threaded onto the two vertical rods 120 respectively. The two fastening nuts 300 in the same set are located above and below the top plate 200 respectively, and are used to clamp the top plate 200.

[0044] The bottom of the positioning support sleeve is supported by the base 100, and the upper surface of the positioning support sleeve is provided with a vertically extending central hole 400.

[0045] The upper end of the pressure applying mechanism 500 is detachably installed on the top plate 200, and the bottom of the pressure applying mechanism 500 is provided with a lifting and movable pressure pin 501.

[0046] like Figure 1 As shown, the clamp-type disconnect switch 101 is connected to clamp 102 via a pin. Typically, both ends of the pin protrude from the clamp 102. During operation, the protruding lower end of the pin is embedded in the central hole 400, providing positioning and support. The central hole 400 also provides space for the pin to move downwards when it is pressed down. To achieve the alignment and limiting of the pressure pin 501, a positioning guide sleeve 103 can be fitted onto the protruding upper end of the pin during operation, allowing the pressure pin 501 to first insert into the positioning guide sleeve 103 for positioning and guidance.

[0047] This invention provides a preferred embodiment of a clamp-type disconnector switch ground maintenance and disassembly fixture, enabling ground maintenance and disassembly of the disconnector switch pin. Operators do not need to carry tools and climb to perform disassembly, improving the safety of maintenance operations. The positioning support sleeve in the fixture provides a precise positioning reference for pin disassembly through the center hole 400 on the upper end face, effectively preventing secondary damage such as pin bending and clamp body deformation caused by force deviation during traditional manual hammering. The stable and controllable pressure provided by the pressure application mechanism 500 replaces the impact force of manual hammering, acting evenly on the pin and reducing the probability of equipment damage. Furthermore, the height of the top plate 200 can be flexibly adjusted using the fastening nut 300, thus adapting to the pin disassembly needs of different specifications of disconnectors, demonstrating strong versatility. Through targeted disassembly and maintenance of the pin, the pin or clamp 102 can be disassembled and replaced, avoiding the resource waste caused by replacing the entire switch set, reducing maintenance costs, and ensuring timely power supply to the power system. The base 100 provides a stable support foundation for the entire tooling. The connection structure between the vertical rod 120 and the top plate 200, as well as the clamping effect of the fastening nut 300, ensure the overall structural stability of the tooling during pressure application and prevent tool slippage and displacement. The detachable connection design between the pressure mechanism 500 and the top plate 200 also facilitates the carrying, installation, and maintenance of the tooling, further improving the ease of operation.

[0048] Reference Figure 3 In some embodiments of the present invention, a support expansion portion 410 is provided at the bottom of the positioning support sleeve. After providing the support expansion portion 410 at the bottom of the positioning support sleeve, the contact area between the positioning support sleeve and the base 100 is significantly increased, preventing excessive local stress from causing the positioning support sleeve to tilt or the base 100 to deform. It is understood that the positioning support sleeve can be provided in multiple specifications according to the position and number of the pins to be disassembled, such as... Figure 3 As shown, a first positioning support sleeve 401 is used. The first positioning support sleeve 401 is provided with a support post, and a central hole 400 is provided on the support post. Figure 2 As shown, a second positioning support sleeve 402 is used. The second positioning support sleeve 402 is provided with two support columns, each of which has a central hole 400. Of course, when using the first positioning support sleeve 401 to disassemble the pin, the second positioning support sleeve 402 can also assist in supporting the isolating switch 101 to improve the stability of the isolating switch 101.

[0049] Reference Figure 4In a further embodiment of the present invention, the connecting hole 110 is a threaded hole, and the bottom of the vertical rod 120 is provided with a second stud 122 adapted to the threaded hole. A preload nut 123 is threadedly connected to the second stud 122, and the preload nut 123 fits against the base 100. By making the connecting hole 110 a threaded hole, and cooperating with the second stud 122 at the bottom of the vertical rod 120, a threaded connection between the vertical rod 120 and the base 100 is achieved. After the preload nut 123 fits against the base 100, it can preload the vertical rod 120, improving the connection stability and preventing the vertical rod 120 from loosening due to vibration during operation.

[0050] Reference Figure 4 In a further embodiment of the present invention, an L-shaped fixing block 600 is also included. The upper end of the pressure applying mechanism 500 is provided with an outwardly expanding ring 502. Multiple L-shaped fixing blocks 600 are arranged around the expanding ring 502. The upper ends of the L-shaped fixing blocks 600 and the top plate 200 are provided with corresponding holes for connection and fixation by screws. The bottom of the L-shaped fixing blocks 600 is provided with a hook block 610 to support the expanding ring 502. The L-shaped fixing blocks 600 cooperate with the expanding ring 502 at the upper end of the pressure applying mechanism 500 to form a stable and detachable connection structure. The multiple L-shaped fixing blocks 600 arranged in a ring provide auxiliary positioning, and the hook block 610 at the bottom supports the expanding ring 502 from below, thus achieving the connection between the pressure applying mechanism 500 and the top plate 200.

[0051] Reference Figure 4 In a further embodiment of the present invention, the top plate 200 is provided with two sets of threaded holes 201. The provision of two sets of threaded holes 201 in the top plate 200 provides multiple installation position options for the L-shaped fixing block 600 and the pressure applying mechanism 500, enhancing the versatility and compatibility of the tooling.

[0052] Reference Figure 4 In a further embodiment of the present invention, the upper surface of the base 100 is provided with a positioning groove 130 for the bottom of the positioning support sleeve to be embedded. The bottom of the positioning support sleeve is embedded in the positioning groove 130, forming a precise positioning, enabling quick alignment and installation of the positioning support sleeve with the base 100. Simultaneously, the positioning groove 130 restricts the radial displacement of the positioning support sleeve, achieving positioning support, preventing the positioning support sleeve from shifting, and improving the operational stability during pin disassembly. The positioning support sleeve is also easy to remove and replace. Figure 4 The positioning groove 130 is a circular groove that fits the support expansion 410 at the bottom of the first positioning support sleeve 401. Of course, in order to fit the second positioning support sleeve 401, a rectangular positioning groove 130 can also be provided on the upper surface of the base 100.

[0053] Reference Figures 5 to 7In some embodiments of the present invention, the top wall of the pressure applying mechanism 500 is provided with a column 510, and the upper end of the column 510 is provided with a limiting head 520 whose contour is larger than that of the column 510. There is a gap between the limiting head 520 and the top wall of the pressure applying mechanism 500 that is adapted to the thickness of the top plate 200. The top plate 200 is provided with a positioning hole 220, and the column 510 passes through the positioning hole 220. The top plate 200 is located between the limiting head 520 and the top wall of the pressure applying mechanism 500. The column 510 passes through the positioning hole 220, and the limiting head 520 and the top wall of the pressure applying mechanism form a gap adapted to the thickness of the top plate 200, thereby realizing the rapid positioning and installation of the pressure applying mechanism 500 and the top plate 200.

[0054] Reference Figure 7 and Figure 8 In a further embodiment of the present invention, the top plate 200 has an inlet / outlet slot 221 communicating with the positioning hole 220 on its side. The width of the inlet / outlet slot 221 is adapted to the column 510, and the width of the inlet / outlet slot 221 is smaller than the diameter of the positioning hole 220. The upper end face of the limiting head 520 has a downwardly extending slot 521. The slot 521 extends to the column 510 and forms through-holes 511 on both sides of the column 510 in the width direction. A positioning post 530 is inserted into the slot 521. The through-holes 511 protrude from both sides of the positioning post 530 and fit against the inner wall of the positioning hole 220. The inlet / outlet slot 221 allows the column 510 to slide into the positioning hole 220 from the side. With the gap between the limiting head 520 and the top wall of the pressure mechanism, the pressure mechanism 500 and the top plate 200 can be quickly disassembled and assembled laterally. After the positioning post 530 is inserted into the slot 521, the protruding outlets 511 on both sides fit against the inner wall of the positioning hole 220, which can effectively limit the shaking of the post 510 in the positioning hole 220, prevent the pressure mechanism 500 from radially shifting, and take into account both quick disassembly and assembly and operational stability. The diameter of the positioning post 530 is adapted to the positioning hole 220. The diameter of the positioning post 530 is larger than that of the upright post 510. The upright post is flat. When the positioning post 530 is inserted into the slot 521 of the upright post 510, the two sides of the positioning post 530 will protrude from the through-hole 511 and cooperate with the positioning hole 220. After the positioning post 530 is inserted into the positioning hole 220, the positioning post 530 cannot move radially. After the positioning post 530 is inserted into the slot 521, the upright post 510 and the limiting head 520 also cannot move radially. This achieves radial positioning of the top plate 200 and the pressure applying mechanism 500, preventing relative movement between them in the horizontal direction. Combined with the action of the limiting head 520, this prevents movement in the vertical direction, thus fixing the positions of the top plate 200 and the pressure applying mechanism 500. Disassembly is also simple; just pull out the positioning post 530 and then move the upright post 510 along the inlet / outlet 221 to remove the pressure applying mechanism 500.

[0055] Reference Figure 6In a further embodiment of the present invention, two sets of columns 510, limiting heads 520, and positioning columns 530 are provided, with the upper ends of the two positioning columns 530 connected in series via crossbars 540. The arrangement of two sets of columns 510, limiting heads 520, and positioning columns 530 enhances the symmetry and stability of the connection between the pressure applying mechanism 500 and the top plate 200, avoiding structural deformation caused by single-point stress. After the upper ends of the two positioning columns 530 are connected in series via crossbars 540, synchronous insertion and removal of the positioning columns is achieved, while preventing individual positioning columns from falling off or being lost, thus improving the convenience and reliability of the tooling. It is understood that the top plate 200 is provided with at least two sets of positioning holes 220 and inlet / outlet slots 221. Of course, in order to enable the pressure applying mechanism 500 to be installed in different positions, multiple sets of positioning holes 220 and inlet / outlet slots 221 can be provided, such as... Figure 6 As shown, four sets of positioning holes 220 and inlet / outlet slots 221 are provided.

[0056] In a specific embodiment of the present invention, the pressure applying mechanism 500 is a screw press. When a screw press is used as the pressure applying mechanism 500, it achieves the lifting and lowering of the pressure pin 501 through screw transmission, providing stable and controllable axial pressure with high pressure adjustment accuracy. Compared with other pressure applying methods, the screw press can precisely control the feed amount and force of the pressure pin 501 by rotating the handle, which can apply a continuous and stable force to the corroded and stuck pin shaft, while avoiding equipment damage due to excessive force. At the same time, the screw press has a simple structure and is easy to operate, making it suitable for manual operation in ground maintenance scenarios, further improving the practicality of the tooling and work efficiency.

[0057] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A ground maintenance dismounting tool for a pincer-type disconnector, characterized in that, include: The base (100) has connecting holes (110) at both ends. A vertical rod (120) is inserted into the connecting hole (110), and a first stud (121) is provided at the upper end of the vertical rod (120). The top plate (200) has sleeve holes (210) at both ends for sleeved with the first stud (121), and the top plate (200) can move up and down relative to the first stud (121); The fastening nut (300) has two sets of first studs (121) that are threaded onto two vertical rods (120) respectively. The two fastening nuts (300) in the same set are located above and below the top plate (200) respectively, and are used to clamp the top plate (200). The positioning support sleeve is supported on the base (100) at the bottom and has a vertically extending center hole (400) on the upper surface; the pressure mechanism (500) is detachably installed on the top plate (200) at the top and has a lifting and movable pressure pin (501) at the bottom.

2. The dismounting tool for the tongs disconnecting switch on the ground according to claim 1, characterized in that, The bottom of the positioning support sleeve is provided with a support expansion (410).

3. The tongs-type disconnector ground maintenance dismounting tool according to claim 1, characterized in that, The connecting hole (110) is a threaded hole. The bottom of the vertical rod (120) is provided with a second stud (122) that is adapted to the threaded hole. A preload nut (123) is threaded onto the second stud (122). The preload nut (123) fits against the base (100).

4. The tongs-type disconnector ground maintenance dismounting tool according to claim 1, characterized in that, It also includes an L-shaped fixing block (600), and the upper end of the pressure applying mechanism (500) is provided with an outwardly expanding ring (502) that extends horizontally. Multiple L-shaped fixing blocks (600) are arranged around the outwardly expanding ring (502). The upper end of the L-shaped fixing block (600) and the top plate (200) are provided with corresponding holes for connection and fixation by screws. The bottom of the L-shaped fixing block (600) is provided with a hook block (610) to support the outwardly expanding ring (502).

5. The dismounting tool for the tongs disconnecting switch according to claim 4, characterized in that, The top plate (200) is provided with two sets of threaded holes (201).

6. The tongs-type disconnector ground maintenance dismounting tool according to claim 1, characterized in that, The upper surface of the base (100) is provided with a positioning groove (130) for the bottom of the positioning support sleeve to be embedded.

7. The tongs-type disconnector ground maintenance dismounting tool according to claim 1, characterized in that, The top wall of the pressure applying mechanism (500) is provided with a column (510), and the upper end of the column (510) is provided with a limiting head (520) with a profile larger than the column (510). There is a gap between the limiting head (520) and the top wall of the pressure applying mechanism (500) that is adapted to the thickness of the top plate (200). The top plate (200) is provided with a positioning hole (220), and the column (510) passes through the positioning hole (220). The top plate (200) is located between the limiting head (520) and the top wall of the pressure applying mechanism (500).

8. The dismounting tool for the ground maintenance of the tongs disconnecting switch according to claim 7, characterized in that, The top plate (200) has an inlet / outlet slot (221) on its side that communicates with the positioning hole (220) and is adapted to the width of the column (510). The width of the inlet / outlet slot (221) is smaller than the diameter of the positioning hole (220). The upper end face of the limiting head (520) has a slot (521) that extends downward. The slot (521) extends to the column (510) and forms through-holes (511) on both sides of the column (510) in the width direction. A positioning post (530) is inserted into the slot (521). The two sides of the positioning post (530) protrude from the through-holes (511) and fit against the inner wall of the positioning hole (220).

9. The dismounting tool for the tongs disconnecting switch according to claim 8, characterized in that, The column (510), the limiting head (520), and the positioning column (530) are provided in two sets, and the upper ends of the two positioning columns (530) are connected in series by a crossbar (540).

10. The tongs-type disconnector ground maintenance dismounting tool according to claim 1, characterized in that, The pressure applying mechanism (500) is a screw press.

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