Dismounting tool and dismounting method for disconnecting switch

Abstract

The invention discloses a disassembling and assembling tool for an isolating switch. The disassembling and assembling tool comprises a workbench and a disassembling and assembling device. A first positioning mechanism and a second positioning mechanism are arranged on the workbench; the first positioning mechanism is used for positioning the isolation tool bit when the isolation tool bit is assembled; the second positioning mechanism is used for positioning the contact conductive arm when the isolation tool bit and the contact conductive arm are assembled or disassembled; the dismounting and mounting device is used for clamping the contact finger pieces on the two sides of the isolation tool bit and pressurizing the contact finger pieces on the two sides of the isolation tool bit. According to the invention, the whole isolation tool bit is dismounted through the dismounting device, and the contact finger sheets at the two sides of the isolation tool bit are pressurized through the dismounting device, so that the dismounting and the assembly of the isolation tool bit are facilitated; and meanwhile, the first positioning mechanism and the second positioning mechanism on the workbench can position the contact finger piece of the isolation tool bit and the contact conductive arm during assembly, so that the isolation tool bit is more convenient to install, and meanwhile, the assembly precision of the contact finger piece of the isolation tool bit is also ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of power maintenance, and particularly to a disassembling and assembling tool for a disconnector and a disassembling method thereof. Background Art

[0002] The GW4 type disconnector is a double-column horizontal rotary disconnector, and the pull-spring type contact structure is a relatively common one. For the specific structure, refer to Figure 1 .

[0003] When the inner finger spring in the contact becomes rusty, deformed, or aged, the pin fixing the finger spring ages and falls off, the silver plating layer on the finger piece falls off, the surface oxide layer at each contact part increases, and the debugging is not in place, it will cause the contact to overheat. In severe cases, it will burn out and cause accidents. Therefore, when the contact overheats, it is necessary to disassemble and overhaul the contact, clean and remove the oxide layer, polish the contact surface, and replace unqualified parts.

[0004] When encountering similar contact heat treatment work, usually, we will remove the entire contact conductive arm from the support porcelain bottle and perform disassembly and overhaul on the ground. After assembly, we will then install the entire contact conductive arm onto the support porcelain bottle. The reason for doing this is that it is very difficult to disassemble the contact assembly in the air, and it is even more difficult to assemble the contact in the air. In the prior art, some of the two sides of the clamping plate have limit teeth, and some do not. The assembly methods used for the two structures are different during assembly. However, there are many parts and there are no stable fixing points between them. Even when assembling on the ground, it will fall apart with a little carelessness, let alone working in the air. In addition, the force of the three finger springs is very large, and it is impossible to spread them open and assemble them by hand.

[0005] Therefore, it is necessary to provide a disassembling and assembling tool for a disconnector and a disassembling method thereof to solve the above problems. Summary of the Invention

[0006] The purpose of the present invention is to address the problem of inconvenient disassembly and assembly of contacts existing in the prior art, and to propose a disassembling and assembling tool for a disconnector and a disassembling method thereof.

[0007] The technical solution of the present invention is: a disassembling and assembling tool for a disconnector, the disassembling and assembling tool includes a workbench and a disassembling and assembling device; the workbench is provided with a first positioning mechanism and a second positioning mechanism; the first positioning mechanism is used to position the isolating knife head when assembling the isolating knife head; the second positioning mechanism is used to position the contact conductive arm when assembling or disassembling the isolating knife head and the contact conductive arm; the disassembling and assembling device is used to clamp the finger pieces on both sides of the isolating knife head and apply pressure to the finger pieces on both sides of the isolating knife head, so that the other ends of the finger pieces on both sides of the isolating knife head open.

[0008] The disassembly and assembly device includes two clamping arms symmetrically arranged; one end of each clamping arm is provided with a clamping block arranged in a dislocation manner, and the clamping blocks arranged in a dislocation manner are used for clamping the finger piece on one side of the isolating cutter head; the other end of each clamping arm is provided with a first driving mechanism for driving the ends of the two clamping arms provided with the clamping blocks to move inward.

[0009] The first driving mechanism includes a double-headed screw rod and a one-way ratchet wrench arranged in the middle of the double-headed screw rod; the other end of each clamping arm is rotatably installed with a movable nut; the movable nuts of the two clamping arms are connected by the double-headed screw rod.

[0010] The bottom of one of the clamping arms is rotatably connected with a catch that engages with the bottom of the other clamping arm.

[0011] The disassembly and assembly device includes a fixed bracket and clamping jaws rotatably connected to both sides of the fixed bracket; one end of each clamping jaw is provided with a clamping end head matching the finger piece, and the other end of each clamping jaw is connected with a second driving mechanism for driving the clamping end heads of the two clamping jaws to move inward.

[0012] The second driving mechanism includes a driving screw rod rotatably connected to the fixed bracket; one end of the driving screw rod is provided with a driving handle, and the other end is threadedly connected with a driving block; the driving block is hinged to the ends of the two clamping jaws through a connecting plate.

[0013] The first positioning mechanism includes a support plate and a first positioning block and a second positioning block respectively arranged on the support plate; the first positioning block and the second positioning block are vertically arranged; a third positioning block for positioning the clamping plate of the isolating cutter head is movably arranged between the first positioning block and the second positioning block; a waist-shaped hole is arranged in the middle of the third positioning block; a connecting screw for connecting with the support plate is arranged in the waist-shaped hole, and the third positioning block is locked through the connecting screw.

[0014] The second positioning mechanism includes two support seats symmetrically and parallelly arranged; a clamping hoop for fixing the contact conducting arm is arranged on the support seat.

[0015] A disassembly and assembly method for a disconnector, the disassembly and assembly method includes a disassembly method and an assembly method;

[0016] The disassembly method includes the following steps:

[0017] S1: Place the contact conducting arm equipped with the isolating cutter head in the clamping hoop on the support seat and clamp it through the clamping hoop;

[0018] S2: Remove the connecting screw between the clamping plate and the contact conducting arm;

[0019] S3: Use the disassembly and assembly device to clamp the finger pieces on both sides of the isolating knife head, and move the ends of the finger pieces on both sides inward, so that the ends connected to the contact conductive arm are opened; separate the isolating knife head from the contact conductive arm.

[0020] S4: Remove the isolating knife head for maintenance.

[0021] S5: Clean, polish and perform rust prevention treatment on the contact surface at the end of the contact conductive arm.

[0022] The assembly method includes the following steps:

[0023] A1: Place the contact conductive arm without the isolating knife head in the clamping hoop on the support base, and clamp it through the clamping hoop.

[0024] A2: Assemble the isolating knife head, including:

[0025] a1: Place the clamping plate on the support table, and limit the clamping plate through the third limit block.

[0026] a2: Assemble the finger pieces on both sides of the clamping plate from bottom to top. During the assembly process, position the finger pieces on both sides through the first positioning block and the second positioning block respectively; a through groove is provided in the middle of the finger piece; two opposite finger pieces are connected by a tension spring and a limit post to complete the assembly of the finger piece and the clamping plate.

[0027] A3: Place the clamping plate with the assembled finger pieces at the end of the contact conductive arm. Clamp the finger pieces on both sides of the clamping plate through the disassembly and assembly device. After the finger pieces corresponding to the end of the contact conductive arm are opened, install them at the end of the contact conductive arm.

[0028] A4: Remove the acting force of the disassembly and assembly device on the finger pieces on both sides of the clamping plate, so that the finger pieces on both sides of the clamping plate clamp the end of the contact conductive arm.

[0029] A5: Fix the clamping plate and the end of the contact conductive arm with connecting screws to complete the assembly.

[0030] Adopting the above technical solution, the present invention has the following beneficial effects: The present invention is provided with a disassembly and assembly device. Through the overall removal of the isolating knife head by the disassembly and assembly device and the pressurization of the finger pieces on both sides of the isolating knife head by the disassembly and assembly device, the disassembly and assembly of the isolating knife head are facilitated. At the same time, the first positioning mechanism and the second positioning mechanism on the workbench can position the finger pieces of the isolating knife head and the contact conductive arm during assembly, making the installation of the isolating knife head more convenient and ensuring the assembly accuracy of the finger pieces of the isolating knife head. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to make the content of the present invention easier to be clearly understood, the present invention will be further described in detail below according to specific embodiments in conjunction with the drawings.

[0032] Figure 1 This is a schematic structural diagram of the disconnecting switch of the present invention.

[0033] Figure 2 This is a schematic structural diagram of the present invention.

[0034] Figure 3 This is a schematic structural diagram of another perspective of the present invention.

[0035] Figure 4 This is a schematic structural diagram of the first driving mechanism of the present invention.

[0036] Figure 5 This is a schematic diagram of the disassembly and assembly device of the present invention for disassembling the isolating knife head.

[0037] Figure 6 This is a schematic structural diagram of Embodiment 2 of the present invention.

[0038] The reference numerals in the drawings are:

[0039] Workbench 1, disassembly and assembly device 2, clamping arm 2-1, clamping block 2-2, fixed bracket 2-3, clamping jaw 2-4, clamping end 2-5, hook 2-6, first positioning mechanism 3, support plate 3-1, first positioning block 3-2, second positioning block 3-3, third positioning block 3-4, second positioning mechanism 4, support seat 4-1, clamping hoop 4-2, isolating knife head 5, finger piece 5-1, clamping plate 5-2, connecting screw 5-3, contact conductive arm 6, first driving mechanism 7, double-headed screw 7-1, one-way ratchet wrench 7-2, movable nut 7-3, second driving mechanism 8, driving screw 8-1, driving handle 8-2, driving block 8-3. Detailed implementation manners

[0040] (Embodiment 1)

[0041] See Figures 1 to 5, A disassembly and assembly tool for a disconnecting switch according to this embodiment, the disassembly and assembly tool including a workbench 1 and a disassembly and assembly device 2; a first positioning mechanism 3 and a second positioning mechanism 4 are provided on the workbench 1; the first positioning mechanism 3 is used to position the disconnecting knife head 5 when assembling the disconnecting knife head 5; the second positioning mechanism 4 is used to position the contact conductive arm 6 when assembling or disassembling the disconnecting knife head 5 and the contact conductive arm 6; the disassembly and assembly device 2 is used to clamp the finger pieces 5-1 on both sides of the disconnecting knife head 5 and apply pressure to the finger pieces 5-1 on both sides of the disconnecting knife head 5, so that the other ends of the finger pieces 5-1 on both sides of the disconnecting knife head 5 open. In this embodiment, the first positioning mechanism 3 and the second positioning mechanism 4 respectively perform precise positioning on the disconnecting knife head 5 and the contact conductive arm 6, ensuring the stability of components during the disassembly and assembly process, reducing manual adjustment errors, and guaranteeing the assembly accuracy. In addition, by clamping and applying pressure to the finger pieces 5-1 with the disassembly and assembly device 2 to achieve their opening, the problem of difficult disassembly in traditional manual operations is solved, and the disassembly and assembly efficiency and safety are improved.

[0042] Further, the disassembly and assembly device 2 includes two symmetrically arranged clamping arms 2-1; a clamping block 2-2 is arranged in a staggered manner at one end of the clamping arm 2-1, and the staggered clamping block 2-2 is used to clamp the finger piece 5-1 on one side of the disconnecting knife head 5, thereby ensuring the stability of the clamping of the finger piece 5-1; a first driving mechanism 7 is provided at the other end of the clamping arm 2-1 for driving the ends of the two clamping arms 2-1 provided with the clamping blocks 2-2 to move inward.

[0043] Further, in order to further ensure the stability of the clamping arm 2-1 clamping the finger piece 5-1, a hook 2-6 that is rotationally connected to the bottom of one clamping arm 2-1 and engages with the bottom of the other clamping arm 2-1 is provided.

[0044] Further, the first driving mechanism 7 includes a double-headed screw 7-1 and a one-way ratchet wrench 7-2 provided in the middle of the double-headed screw 7-1; a movable nut 7-3 is rotatably installed at the other end of the clamping arm 2-1; the movable nuts 7-3 of the two clamping arms 2-1 are connected by the double-headed screw 7-1, and the double-headed screw 7-1 realizes synchronous two-way movement to ensure the synchronous operation of the two clamping arms 2-1 on both sides; the one-way ratchet wrench 7-2 provides controllable progressive pressure, preventing overloading and damaging the finger piece 5-1, and is labor-saving in operation.

[0045] Further, the first positioning mechanism 3 includes a support plate 3-1, a first positioning block 3-2 and a second positioning block 3-3 which are respectively arranged on the support plate 3-1; the first positioning block 3-2 and the second positioning block 3-3 are vertically arranged; a third positioning block 3-4 for positioning the clamping plate 5-2 of the isolating cutter head 5 is movably arranged between the first positioning block 3-2 and the second positioning block 3-3; a waist-shaped hole is arranged in the middle of the third positioning block 3-4; a connecting screw 5-3 connected to the support plate 3-1 is arranged in the waist-shaped hole, and the third positioning block 3-4 is locked by the connecting screw 5-3. In this embodiment, the first positioning block 3-2 and the second positioning block 3-3 are vertically arranged to form a right-angle positioning reference, ensuring the perpendicularity and position accuracy during the assembly of the finger piece 5-1. At the same time, the third positioning block 3-4 and the waist-shaped hole are provided, and the position can be adjusted to adapt to clamping plates 5-2 of different sizes. After the connecting screw 5-3 is fixed, the stability is enhanced and the adaptability is strong.

[0046] Further, the second positioning mechanism 4 includes two symmetrically and parallelly arranged support seats 4-1; a clamping hoop 4-2 for fixing the contact conductive arm 6 is arranged on the support seat 4-1. In this embodiment, the clamping hoop 4-2 is used to provide a uniform clamping force to the contact conductive arm 6, avoiding the displacement or inclination of the contact conductive arm 6 during disassembly and ensuring the separation accuracy between the isolating cutter head 5 and the conductive arm.

[0047] A disassembly and assembly method for a disconnecting switch, the disassembly and assembly method including a disassembly method and an assembly method;

[0048] The disassembly method includes the following steps:

[0049] S1: Place the contact conductive arm 6 equipped with the isolating cutter head 5 into the clamping hoop 4-2 on the support seat 4-1 and clamp it through the clamping hoop 4-2;

[0050] S2: Remove the connecting screw 5-3 between the clamping plate 5-2 and the contact conductive arm 6;

[0051] S3: Use the disassembly and assembly device 2 to clamp the finger pieces 5-1 on both sides of the isolating cutter head 5, and make the ends of the finger pieces 5-1 on both sides move inward, so that the ends connected to the contact conductive arm 6 are opened; separate the isolating cutter head 5 from the contact conductive arm 6;

[0052] S4: Remove the isolating cutter head 5 for maintenance;

[0053] S5: Clean, polish and perform rust prevention treatment on the contact surface at the end of the contact conductive arm 6;

[0054] The assembly method includes the following steps:

[0055] A1: Place the contact conductive arm 6 without the isolating cutter head 5 in the clamping hoop 4-2 on the support base 4-1 and clamp it through the clamping hoop 4-2.

[0056] A2: Assemble the isolating cutter head 5, including:

[0057] a1: Place the clamping plate 5-2 on the support table and limit the clamping plate 5-2 through the third limit block.

[0058] a2: Assemble the finger pieces 5-1 on both sides of the clamping plate 5-2 from bottom to top. During the assembly process, position the finger pieces 5-1 on both sides through the first positioning block 3-2 and the second positioning block 3-3 respectively; a through groove is provided in the middle of the finger piece 5-1; two opposite finger pieces 5-1 are connected by a tension spring in cooperation with a limit post to complete the assembly of the finger piece 5-1 and the clamping plate 5-2.

[0059] A3: Place the clamping plate 5-2 with the finger pieces 5-1 assembled on the end of the contact conductive arm 6. Clamp the finger pieces 5-1 on both sides of the clamping plate 5-2 through the disassembly and assembly device 2. After the end of the finger piece 5-1 corresponding to the contact conductive arm 6 is opened, install it on the end of the contact conductive arm 6.

[0060] A4: Remove the acting force of the disassembly and assembly device 2 on the finger pieces 5-1 on both sides of the clamping plate 5-2, so that the finger pieces 5-1 on both sides of the clamping plate 5-2 clamp the end of the contact conductive arm 6.

[0061] A5: Fix the clamping plate 5-2 and the end of the contact conductive arm 6 with the connecting screw 5-3 to complete the assembly.

[0062] Embodiment 2

[0063] See Figure 6 , this embodiment is basically the same as Embodiment 1, the difference is that: the disassembly and assembly device 2 in this embodiment includes a fixed bracket 2-3 and clamping jaws 2-4 rotatably connected to both sides of the fixed bracket 2-3; one end of the clamping jaw 2-4 is provided with a clamping end 2-5 matching the finger piece 5-1, and the other end of the clamping jaw 2-4 is connected with a second driving mechanism 8 for driving the clamping ends 2-5 of the two clamping jaws 2-4 to move inward.

[0064] Further, the second driving mechanism 8 includes a driving screw 8-1 rotatably connected to the fixed bracket 2-3; one end of the driving screw 8-1 is provided with a driving handle 8-2, and the other end is threadedly connected with a driving block 8-3; the driving block 8-3 is hinged to the ends of the two clamping jaws 2-4 through a connecting plate.

[0065] The specific embodiments described above further elaborate on the objectives, technical solutions, and beneficial effects of the present invention. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A disassembly and assembly tool for a disconnecting switch, characterized in that: The disassembly and assembly tool includes a workbench (1) and a disassembly and assembly device (2); a first positioning mechanism (3) and a second positioning mechanism (4) are provided on the workbench (1); the first positioning mechanism (3) is used to position the isolation cutter head (5) during the assembly of the isolation cutter head (5); the second positioning mechanism (4) is used to position the contact conductive arm (6) during the assembly or disassembly of the isolation cutter head (5) and the contact conductive arm (6); the disassembly and assembly device (2) is used to clamp the finger pieces (5-1) on both sides of the isolation cutter head (5) and apply pressure to the finger pieces (5-1) on both sides of the isolation cutter head (5), so that the other ends of the finger pieces (5-1) on both sides of the isolation cutter head (5) open.

2. The disassembling and assembling tool for a disconnector according to claim 1, characterized in that: The disassembly and assembly device (2) includes two symmetrically arranged clamping arms (2-1); a clamping block (2-2) is arranged at one end of the clamping arm (2-1) in a staggered manner, and the staggered clamping block (2-2) is used to clamp the finger piece (5-1) on one side of the isolation cutter head (5); a first driving mechanism (7) for driving the ends of the two clamping arms (2-1) provided with the clamping blocks (2-2) to move inward is arranged at the other end of the clamping arm (2-1).

3. The disassembling and assembling tool for a disconnector according to claim 2, characterized in that: A hook (2-6) that is rotationally connected to the bottom of one clamping arm (2-1) and engages with the bottom of the other clamping arm (2-1) is provided.

4. The disassembling and assembling tool for a disconnector according to claim 2, characterized in that: The first driving mechanism (7) includes a double-headed screw (7-1) and a one-way ratchet wrench (7-2) provided in the middle of the double-headed screw (7-1); a movable nut (7-3) is rotatably installed at the other end of the clamping arm (2-1); the movable nuts (7-3) of the two clamping arms (2-1) are connected by the double-headed screw (7-1).

5. The disassembling and assembling tool for a disconnecting switch according to claim 1, characterized in that: The disassembly and assembly device (2) includes a fixed bracket (2-3) and clamping jaws (2-4) rotatably connected to both sides of the fixed bracket (2-3); a clamping end (2-5) matching the finger piece (5-1) is provided at one end of the clamping jaw (2-4), and a second driving mechanism (8) for driving the clamping ends (2-5) of the two clamping jaws (2-4) to move inward is connected to the other end of the clamping jaw (2-4).

6. The disassembling and assembling tool for a disconnector according to claim 5, characterized in that: The second driving mechanism (8) includes a driving screw (8-1) rotatably connected to the fixed bracket (2-3); a driving handle (8-2) is provided at one end of the driving screw (8-1), and a driving block (8-3) is threadedly connected to the other end; the driving block (8-3) is hinged to the ends of the two clamping jaws (2-4) through a connecting plate.

7. The disassembling and assembling tool for a disconnector according to claim 1, characterized in that: The first positioning mechanism (3) includes a support plate (3-1), a first positioning block (3-2) and a second positioning block (3-3) which are respectively arranged on the support plate (3-1); the first positioning block (3-2) and the second positioning block (3-3) are vertically arranged; a third positioning block (3-4) for positioning the clamping plate (5-2) of the isolating cutter head (5) is movably arranged between the first positioning block (3-2) and the second positioning block (3-3); a waist-shaped hole is arranged in the middle of the third positioning block (3-4); a connecting screw (5-3) connected with the support plate (3-1) is arranged in the waist-shaped hole, and the third positioning block (3-4) is locked by the connecting screw (5-3).

8. The disassembling and assembling tool for a disconnector according to claim 1, characterized in that: The second positioning mechanism (4) includes two symmetrically and parallelly arranged support seats (4-1); a clamping hoop (4-2) for fixing the contact conducting arm (6) is arranged on the support seat (4-1).

9. A method for disassembling and assembling a disconnector, characterized in that: The disassembly and assembly method includes a disassembly method and an assembly method; the disassembly method includes the following steps: S1: Place the contact conducting arm (6) equipped with the isolating cutter head (5) in the clamping hoop (4-2) on the support seat (4-1), and clamp it through the clamping hoop (4-2). S2: Remove the connecting screw (5-3) between the clamping plate (5-2) and the contact conducting arm (6). S3: Use the disassembly and assembly device (2) to clamp the finger pieces (5-1) on both sides of the isolating cutter head (5), and make the ends of the finger pieces (5-1) on both sides move inwards, so that the ends connected to the contact conducting arm (6) are opened; separate the isolating cutter head (5) from the contact conducting arm (6). S4: Remove the isolating cutter head (5) for maintenance. S5: Clean, polish and perform rust prevention treatment on the contact surface at the end of the contact conducting arm (6). The assembly method includes the following steps: A1: Place the contact conducting arm (6) without the isolating cutter head (5) in the clamping hoop (4-2) on the support seat (4-1), and clamp it through the clamping hoop (4-2). A2: Assemble the isolating cutter head (5), including: a1: Place the clamping plate (5-2) on the support table, and limit the clamping plate (5-2) through the third limiting block. a2: Assemble the finger pieces (5-1) on both sides of the clamping plate (5-2) from bottom to top. During the assembly process, position the finger pieces (5-1) on both sides through the first positioning block (3-2) and the second positioning block (3-3) respectively; a through groove is arranged in the middle of the finger piece (5-1); the two opposite finger pieces (5-1) are connected by a tension spring and a limiting post in cooperation to complete the assembly of the finger piece (5-1) and the clamping plate (5-2). A3: Place the clamping plate (5-2) equipped with the finger pieces (5-1) at the end of the contact conducting arm (6). Clamp the finger pieces (5-1) on both sides of the clamping plate (5-2) through the disassembly and assembly device (2). After the finger pieces (5-1) are opened corresponding to the end of the contact conducting arm (6), install them at the end of the contact conducting arm (6). A4: Remove the acting force of the disassembly and assembly device (2) on the finger pieces (5-1) on both sides of the clamping plate (5-2), so that the finger pieces (5-1) on both sides of the clamping plate (5-2) clamp the end of the contact conducting arm (6); A5: Fix the clamping plate (5-2) and the end of the contact conducting arm (6) with the connecting screw (5-3) to complete the assembly.

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