CN109787130B - Folded arm type isolating switch overhauling method - Google Patents
Folded arm type isolating switch overhauling method Download PDFInfo
- Publication number
- CN109787130B CN109787130B CN201811553559.1A CN201811553559A CN109787130B CN 109787130 B CN109787130 B CN 109787130B CN 201811553559 A CN201811553559 A CN 201811553559A CN 109787130 B CN109787130 B CN 109787130B
- Authority
- CN
- China
- Prior art keywords
- spring
- isolating switch
- upper conductive
- base
- conductive arm
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000012423 maintenance Methods 0.000 claims abstract description 28
- 210000001503 joint Anatomy 0.000 claims abstract description 17
- 238000001125 extrusion Methods 0.000 claims description 17
- 230000005540 biological transmission Effects 0.000 claims description 16
- 230000006835 compression Effects 0.000 claims description 12
- 238000007906 compression Methods 0.000 claims description 12
- 239000012212 insulator Substances 0.000 claims description 9
- 229910052573 porcelain Inorganic materials 0.000 claims description 9
- 238000004080 punching Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 239000010985 leather Substances 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000011418 maintenance treatment Methods 0.000 abstract 1
- 238000013461 design Methods 0.000 description 5
- 230000006378 damage Effects 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000013102 re-test Methods 0.000 description 1
Images
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention provides a maintenance method of a folding arm type isolating switch, which is implemented by using a special tool platform designed in a matching way in an auxiliary way and comprises the steps of ① moving the special tool platform to a set station and horizontally calibrating, ② fixing the isolating switch on the special tool platform, disassembling a conductive arm on ③, disassembling a ④ middle joint, disassembling a conductive arm under ⑤, disassembling a conductive arm on ⑥, disassembling a ⑦ clamping spring, assembling and disassembling a ⑧ moving contact, reassembling after ⑨ maintenance treatment, debugging ⑩ and the like.
Description
Technical Field
The invention relates to a method for overhauling a folding arm type isolating switch by a power supply department.
Background
The 110kV and 220kV folding arm type isolation switches (such as folding arm type isolation switches of SPV, SPO, GW16, GW17, GW22, GW23 and the like) are ideal equipment for arrangement of incoming and outgoing lines of a transformer substation due to the characteristics of compact structure, small occupied area, large current carrying capacity, good sealing of moving parts, high safety and reliability and the like, and are widely applied to a power grid. The folding arm type isolating switch is greatly influenced by the outdoor environment in the outdoor long-term use process, the upper and lower conductive arms of the folding arm type isolating switch are easy to corrode and jam, and components such as a rotating shaft, a shaft pin, a waterproof cover and a fastener in the folding arm type isolating switch are easy to seize due to corrosion, so that the folding arm type isolating switch is in fault and needs to be overhauled. The traditional method for field maintenance of the folding arm type isolating switch is that a maintenance worker depends on a simpler tool and adopts hammering, wrench screwing, screwdriver screwing and prying and other methods, the folding arm type isolating switch needs to be matched by multiple persons during maintenance, particularly, a moving contact and a clamping spring are more difficult to disassemble and assemble, time and labor are wasted, and related components of the folding arm type isolating switch are easily damaged.
Disclosure of Invention
The purpose of the invention is: aiming at the problems in the prior art, the method for overhauling the folding arm type isolating switch assisted by the special tool platform in matched design is provided, the method can save time and labor for disassembling and overhauling the folding arm type isolating switch, and the overhauling efficiency and quality are improved.
The technical scheme of the invention is as follows: the maintenance method of the folding arm type disconnecting switch is implemented by using a special tool platform which is designed in a matching way, wherein the special tool platform comprises a base, an upper conductive arm first fixing piece, an upper conductive arm second fixing piece, a spring dismounting first fixing piece, a spring dismounting second fixing piece and a spring compression assembly, wherein the upper conductive arm first fixing piece, the upper conductive arm second fixing piece, the spring dismounting first fixing piece and the spring dismounting second fixing piece are fixedly arranged on the base; the base is provided with a travelling wheel, a telescopic beam, an adjustable supporting leg and a level gauge; the first fixing part of the upper conductive arm comprises a vertical beam fixedly connected with the base, a horizontal beam vertically and integrally connected with the vertical beam, a fixed clamping plate fixedly arranged on the horizontal beam, a screw rod movably arranged in the horizontal beam, a movable clamping plate fixedly arranged on the screw rod and a hand wheel fixedly arranged at the front end of the screw rod; the structure of the first fixing piece and the second fixing piece which are assembled and disassembled by the spring is the same as that of the first fixing piece of the upper conductive arm; the second fixing part of the upper conductive arm comprises a second vertical beam fixedly connected with the base, a rotating shaft movably arranged at the upper part of the second vertical beam in the front-back direction, a rotary table fixing seat penetrating through the rotating shaft and fixedly arranged at the upper part of the second vertical beam, a rotary table fixedly arranged on the rotating shaft and positioned in front of the rotary table fixing seat and provided with a plurality of pin holes, a rotary table positioning pin movably arranged on the rotary table fixing seat and used for matching with the pin hole of the rotary table to lock the rotary table, and a hoop fixedly arranged at the front end of the rotating shaft and capable of being opened and closed; the spring compression assembly comprises a guide rod, a spring extrusion piece, a transmission screw rod and a screw rod hand wheel, wherein two ends of the guide rod are fixedly connected with the first and second spring disassembling fixing pieces respectively, the spring extrusion piece is movably sleeved on the guide rod, the transmission screw rod is movably arranged on the second spring disassembling fixing piece, and the screw rod hand wheel is fixedly arranged at one end of the transmission screw rod; the other end of the transmission screw rod is fixedly connected with the spring extrusion piece;
the overhauling method comprises the following steps:
① moving the special tool platform to a set station and horizontally calibrating, namely pushing the special tool platform to a station required by the maintenance of the isolating switch by using a travelling wheel on the base of the special tool platform, pulling out a telescopic beam of the base in a proper amount, grounding the adjustable supporting feet of the base, monitoring each level instrument, adjusting the vertical height of the adjustable supporting feet, and adjusting the special tool platform to a horizontal state;
② fixing the isolating switch, namely, placing the isolating switch at a brake separating position, binding the upper and lower conductive arms of the isolating switch firmly, removing a supporting porcelain insulator and a rotating porcelain insulator of the isolating switch, then hoisting the isolating switch to the special tool platform by using a crane, and fixedly connecting the base of the isolating switch with the base of the special tool platform by using bolts;
③ conductive arm detachment:
the first step is as follows: on the premise that the isolating switch is in the opening position, taking down a cotter pin, a roller and a shaft pin at the lower end of the conducting tube assembly on the isolating switch;
the second step is that: the sealing silica gel around the rubber corrugated pipe assembled on the upper conductive pipe is removed and taken down;
the third step: loosening a positioning screw assembled on the upper conductive tube to the maximum position or taking down the positioning screw by using a spanner;
the fourth step: loosening the fastening bolt for connecting the upper conductive pipe and the middle joint to the maximum position or taking down the fastening bolt, and properly expanding the fixing hoop for connecting the upper conductive pipe and the middle joint by using a wedge;
the fifth step: opening the hoop of the special tooling platform, pulling out the upper conductive arm, and locking the movable contact seat of the upper conductive arm after the movable contact seat is arranged in the hoop; the lower part of the upper conductive arm is arranged on a horizontal beam of a first fixing piece of the upper conductive arm of the special tool platform and is positioned between the fixed clamping plate and the movable clamping plate;
④ disassembling the middle joint:
the first step is as follows: loosening a clamping fixing bolt and a positioning bolt of the middle connector of the isolating switch close to the lower conductive tube side to the maximum position or taking down the middle connector and the positioning bolt, and expanding a fixing hoop for connecting the middle connector and the lower conductive tube by using a wedge;
the second step is that: rotating a connecting fork part of the middle joint in a closing direction, crossing a closing position and then rotating for a certain angle to enable a gear of the middle joint to be disengaged from a rack of a lower operating rod in the lower conductive pipe, and taking down the middle joint;
⑤ lower conductive arm detachment:
the first step is as follows: loosening a holding clamping fixing bolt of the isolating switch base, loosening a positioning bolt of the base to the maximum position or taking down the positioning bolt by using a spanner, and properly expanding a fixing hoop for connecting the base and the lower conductive tube by using a wedge;
the second step is that: removing a connecting shaft pin between the adjustable connecting assembly of the lower operating rod and the base;
the third step: after slowly reversing to the opening position, the lower conductive tube and the lower operating rod are disassembled;
⑥ disintegration of the upper conductive arm:
the first step is as follows: loosening a positioning screw and an anchor ear bolt of a movable contact seat in the assembly of the movable contact of the isolating switch to the maximum position or taking down the movable contact seat by using a spanner, and properly expanding a fixed anchor ear connected between the movable contact seat and an upper conductive tube by using a wedge; pulling out the upper conductive tube;
the second step is that: removing the split pin on the B-shaped pin on the side of the upper conductive arm return spring;
the third step: marking the relative positions of the B-shaped pin mounting holes on the upper operating rod and the insulating rod of the upper conductive arm;
the fourth step: properly pushing the upper operating rod to punch out a B-shaped pin at the side of the return spring of the insulating rod;
the fifth step: separating the moving contact assembly of the upper conductive arm from the upper operating rod;
⑦ detaching of clamping spring:
the first step is as follows: two ends of the upper operating rod are respectively arranged on a first fixing piece and a second fixing piece for assembling and disassembling a spring of the special tool platform, and respective hand wheels are rotated to enable respective movable clamping plates to move towards the fixed clamping plates so as to clamp and fix two ends of the upper operating rod;
the second step is that: a spring extrusion piece of a spring compression assembly of the special tool platform is abutted against a clamping spring, and a screw mandrel hand wheel is rotated to drive the spring extrusion piece to move along a guide rod through a transmission screw mandrel so as to further compress the clamping spring;
the third step: punching elastic cylindrical pins which are arranged on the upper operating rod and are positioned at two ends of the clamping spring by using a punch according to the sequence of the inner pin and the outer pin;
the fourth step: rotating a screw rod hand wheel, releasing the energy of a clamping spring to a natural state, taking an upper operating rod down from a special tool platform, taking the clamping spring, a gasket and a sleeve down from the upper operating rod, and overhauling each part;
⑧ moving contact assembly disassembly:
the first step is as follows: pulling out a turntable positioning pin of a second fixing piece of an upper conductive arm of the special tooling platform, rotating a turntable to assemble and adjust the movable contact to a position convenient for disassembly operation, and then inserting the turntable positioning pin to fix the position of the movable contact assembly;
the second step is that: sequentially removing the conductive band, the arc striking ring and the waterproof rubber ring on the two sides of the movable contact seat;
the third step: punching out elastic pins at two ends of 2 movable contact spring mounting shafts assembled on the movable contact by using a punch, and taking out the 2 movable contact spring mounting shafts;
the fourth step: pulling out the movable contact piece assembled by the movable contact and assembling the four connecting rods, and further disassembling and overhauling the movable contact piece and the four connecting rods;
⑨ reinstalling after overhaul treatment:
the first step is as follows: cleaning and checking the disassembled parts; replacing unqualified parts;
the second step is that: the parts of the isolating switch are reassembled according to the sequence opposite to the disassembly sequence, and a layer of thin conductive paste is smeared on the contact surface between the conductive members; the bolts for connection measure the moment again;
⑩ debugging:
the first step is as follows: placing the isolating switch in a closing state;
the second step is that: the length of the double connecting rods on the base is adjusted to adjust the lower conductive arm to be in a vertical state, and the double connecting rods on the base and the crank arm of the base 71 should pass through a dead point by 1-2 degrees;
the third step: adjusting the upper conductive arm to be in a vertical state by adjusting the length of the adjustable connection assembly between the lower conductive arm and the base;
the fourth step: and testing the whole loop resistance of the isolating switch by matching with a static contact of the isolating switch.
The further scheme is as follows: the base of the special tool platform comprises 2 cross beams which are arranged in parallel in the front and back direction, 2 connecting beams which are arranged in parallel in the left and right direction and connect the 2 cross beams, 2 telescopic beams which are respectively arranged in the 2 cross beams and can be telescopic to the same side by depending on the 2 cross beams, 1 total 5 adjustable supporting legs are respectively arranged at each end of the 2 cross beams and the 2 telescopic beams and the middle parts of the 1 connecting beams, and 1 total 4 travelling wheels are respectively arranged at the outer sides of the two ends of the 2 cross beams; the 2 cross beams and the 2 connecting beams form a square frame structure, and the square frame structure is provided with 4 corner parts in front, back, left and right; the upper conductive arm first fixing piece is fixedly arranged above the corner part at the left front part of the square frame structure; the upper conductive arm second fixing piece is fixedly arranged above the corner part at the right front of the square frame structure; the spring dismounting first fixing piece is fixedly arranged above the corner part at the right rear side of the square frame structure; the spring dismounting second fixing piece is fixedly arranged above the corner part at the left rear part of the square frame structure; the gradienters are respectively arranged on the cross beam and the connecting beam of the base.
The further scheme is as follows: the hoop of the second fixing piece of the conductive arm on the special tool platform comprises 2 semicircular bodies, a hinge for hinging one end of each of the 2 bodies, connecting lugs fixedly arranged at one end of each of the 2 bodies and a hoop locking handle for locking or unlocking the 2 connecting lugs; the hoop locking handle is of a screw and nut structure; and a leather cushion layer is fixedly arranged in the hoop.
The further scheme is as follows: the turntable of the second fixing part of the conductive arm on the special tool platform is a circular structural part, and the pin holes are uniformly arranged at intervals along the peripheral part of the turntable in a mode that the central angles of the pin holes are 30 degrees.
The invention has the positive effects that: (1) compared with the common method in the prior art, the method for overhauling the folding arm type isolating switch can greatly reduce the personnel required for field overhauling, save the labor, greatly improve the overhauling efficiency and shorten the overhauling time, thereby greatly reducing the overhauling power failure time, having better economic and social benefits, effectively protecting the related components of the isolating switch and improving the overhauling quality. (2) The special tool platform adopted by the maintenance method of the folding arm type isolating switch is convenient and flexible to move when in use and convenient to maintain the station in place through the structural design of the base, the folding arm type isolating switch can be conveniently fixed, the support is firm and reliable, and horizontal calibration can be conveniently carried out so as to improve the maintenance quality. (3) The special tool platform adopted by the maintenance method of the folding arm type isolating switch is convenient and effective to fix and carry out the dismounting maintenance of the upper conductive arm, the moving contact and the clamping spring in the upper conductive pipe of the upper conductive arm when in use through the structural design of the 4 adjustable clamping and holding members arranged on the base, thereby saving time and labor and improving the maintenance efficiency. (4) According to the special tool platform adopted by the maintenance method of the folding arm type disconnecting switch, the telescopic beam is arranged on the base to adjust the supporting gravity center of the tool platform, and the 4 adjustable clamping and holding components can conveniently perform size adjustment and other structural designs, so that the special tool platform can be effectively suitable for maintenance of folding arm type disconnecting switches of different models, and is high in applicability. (5) The special tool platform adopted by the maintenance method of the folding arm type isolating switch has the advantages that the hoop which has the 360-degree rotation function and can be conveniently fixed through the bolt is arranged, so that the requirement that a plurality of moving contact assemblies are assembled and disassembled from different angles can be effectively met when the special tool platform is used, the use is convenient, and the maintenance efficiency is improved. (6) According to the special tool platform adopted by the maintenance method of the folding-arm type isolating switch, the cushion layer is arranged in the hoop, so that the hoop can better clamp the movable contact part of the folding-arm type isolating switch in use, and the damage to the outer part of the movable contact part of the folding-arm type isolating switch can be prevented. (7) The special tool platform adopted by the maintenance method of the folding arm type isolating switch is matched with the 2 adjustable clamping components through the structural design of the spring compression assembly, so that the disassembly, assembly and maintenance of the clamping spring in the upper conductive arm, which is easy to break down and very difficult to maintain on site, of the folding arm type isolating switch are easy and convenient, the maintenance efficiency can be effectively improved, the components are not easy to damage, and the maintenance quality is improved.
Drawings
FIG. 1 is a schematic structural diagram of a dedicated tooling platform for assisting in the practice of the method of the present invention;
FIG. 2 is a schematic structural view of a second fixing member of the upper conductive arm in FIG. 1;
FIG. 3 is a schematic view of the second fixing member of the upper conductive arm of FIG. 1 viewed from a direction different from that of FIG. 2;
FIG. 4 is a schematic view of the state of the invention during maintenance of a folding arm type disconnecting switch by using a special tooling platform;
fig. 5 is a schematic diagram of the state of the invention when the special tooling platform is used for assembling the moving contact of the folding arm type isolating switch and disassembling and assembling the clamping spring.
The reference numbers in the above figures are as follows:
the device comprises a base 1, a cross beam 11, a connecting beam 12, an isolating switch seat fixing hole 12-1, a supporting protrusion 12-2, a telescopic beam 13, an adjustable supporting leg 14, a walking wheel 15, a straight walking wheel 15-1, a universal wheel 15-2 and a level meter 16;
the device comprises an upper conductive arm first fixing part 2, a vertical beam 21, a horizontal beam 22, a fixed clamping plate 23, a movable clamping plate 24 and a hand wheel 25;
the device comprises an upper conductive arm second fixing piece 3, a second vertical beam 31, a rotating shaft 32, a rotary disc fixing seat 33, a rotary disc 34, a pin hole 34-1, a rotary disc positioning pin 35, a hoop 36, a body 36-1, a hinge 36-2, a connecting lug 36-3, a hoop locking handle 36-4 and a cushion layer 36-5;
the first fixing part 4 is disassembled and assembled by the spring;
the second fixing piece 5 is disassembled and assembled by the spring;
the spring compression assembly 6, the guide rod 61, the spring extrusion piece 62, the transmission screw rod 63 and the screw rod hand wheel 64;
the automatic switching device comprises a GW16 type folding arm type isolating switch 7, a base 71, an upper conductive tube 72, an upper operating rod 73, a clamping spring 74, a movable contact assembly 75, a movable contact seat 75-1, an intermediate joint 76 and a lower conductive tube 77.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
(example 1)
The maintenance method of the folding arm type isolating switch of the embodiment is implemented by using a special tool platform designed in a matching way.
Referring to fig. 1, the special tooling platform mainly comprises a base 1, an upper conductive arm first fixing piece 2, an upper conductive arm second fixing piece 3, a spring dismounting first fixing piece 4, a spring dismounting second fixing piece 5 and a spring compression assembly 6.
The base 1 mainly comprises a cross beam 11, a connecting beam 12, a telescopic beam 13, an adjustable supporting leg 14, a walking wheel 15 and a level gauge 16.
The crossbeam 11 divides 2 parallel arrangement in front and back, and in this embodiment, the preferred hollow high strength square pipe that adopts of crossbeam 11, and the preferred stainless steel of material of crossbeam 11. The 2 connecting beams 12 are arranged in parallel from left to right, the front ends and the rear ends of the 2 connecting beams 12 are respectively and fixedly connected with the left end and the right end of the 1 cross beam 11 vertically, so that a square frame structure is formed, the middle parts of the 2 connecting beams 12 are provided with a group of screw holes which are communicated up and down and are used as fixing holes 12-1 of the isolating switch seat, and the middle part of the connecting beam 12 positioned on the left side is also provided with a supporting protrusion 12-2 which is integrally connected with the connecting beam 12 and extends out to the left side; the flexible roof beam 13 is equipped with 2, and 2 flexible roof beams 13 respectively set up 1 in the cavity position telescopically of 2 crossbeams 11, and when the use needs, flexible roof beam 13 can be followed and outwards pulled out in the crossbeam 11 to the support focus of changing the device increases the stability when the device uses, improves the adaptability that the device overhauld to the arm-folding type isolator of different models. The adjustable supporting feet 14 are totally 5, the number of the 5 adjustable supporting feet 14 is 1 respectively arranged at the right ends of the 2 cross beams, the left ends of the 2 telescopic beams 13 and the left end of the supporting protrusion part 12-2 of the connecting beam 12 positioned on the left side, the adjustable supporting feet 14 are used for supporting when the device is used, and the height of the adjustable supporting feet can be adjusted up and down so as to enable the device to be leveled horizontally. The walking wheels 15 are respectively provided with 1 at the two ends of the outer sides of the 2 beams 11, as an optimal mode, the walking wheels 15 at the left ends of the outer sides of the 2 beams 11 adopt straight-going wheels 15-1, and the walking wheels 15 at the left ends of the outer sides of the 2 beams 11 adopt universal wheels 15-2, so that the device can conveniently walk straight and turn and adjust directions in the using process. Preferably, the base 1 is further provided with level gauges 16 for leveling the device in use, and more preferably, the level gauges 16 are respectively arranged on the 2 cross beams 11 and the connecting beam 12 on the left side, and by arranging the level gauges 16, the device can be leveled horizontally conveniently and accurately in use, which is beneficial to improving the maintenance precision.
The first fixing part 2 of the upper conductive arm mainly comprises a vertical beam 21, a horizontal beam 22, a fixed clamping plate 23, a movable clamping plate 24, a hand wheel 25 and a screw rod (not shown in the figure).
The vertical beam 21 is vertically and fixedly arranged on the upper end surface of the joint part of the cross beam 11 positioned on the front side and the connecting beam 12 positioned on the left side of the base 1; in this embodiment, the vertical beam 21 is preferably a hollow high-strength square pipe, and the vertical beam 21 is preferably made of stainless steel. The horizontal beam 22 is integrally connected with the upper part of the vertical beam 21 from the lower part of the rear end thereof to form an inverted L-shaped structure, the horizontal beam 22 is provided with a slotted hole with an opening at the upper end, the fixed clamping plate 23 is vertically and fixedly arranged on the upper end surface of the front part of the horizontal beam 22, the screw rod is movably arranged in the slotted hole of the horizontal beam 22, and the movable clamping plate 24 is fixedly arranged on the screw rod and is oppositely arranged with the fixed clamping plate 23 in the front-back direction; the hand wheel 25 is fixedly connected with the front end of the screw rod and is arranged at the front end of the horizontal beam 22. When the isolating switch is used, the hand wheel 25 is rotated clockwise, so that the movable clamping plate 24 can move towards the fixed clamping plate 23 through the transmission of the screw rod, and the movable clamping plate 24 and the fixed clamping plate 23 clamp one end of an upper conductive arm of the isolating switch together; counter-clockwise rotation of the hand wheel 25 causes the movable clamping plate 24 to move away from the fixed clamping plate 23 to release the clamped end of the conductive arm of the disconnector.
Referring to fig. 2 and 3, the second fixing member 3 of the upper conductive arm is mainly composed of a second vertical beam 31, a rotating shaft 32, a turntable fixing seat 33, a turntable 34, a turntable positioning pin 35 and an anchor ear 36.
The second vertical beam 31 is vertically and fixedly arranged on the upper end surface of the joint part of the cross beam 11 positioned on the front side and the connecting beam 12 positioned on the right side of the base 1; in this embodiment, the second vertical beam 31 is preferably a hollow high-strength square pipe, and the second vertical beam 31 is preferably made of stainless steel. The rotating shaft 32 is arranged on the upper part of the second vertical beam 31 in a front-back direction in a rotatable manner; the turntable fixing seat 33 is a circular structural member, a shaft hole is formed in the center of the turntable fixing seat 33, a pin hole is formed in the upper portion of the turntable fixing seat 33, and the turntable fixing seat 33 is fixedly arranged at the front end of the upper portion of the second vertical beam 31; the rotating shaft 32 penetrates through the shaft hole of the rotating disc fixing seat 33 to extend forwards, the rotating disc 34 is a circular component matched with the rotating disc fixing seat 33 in size, the rotating disc 34 is provided with a plurality of pin holes 34-1 which are penetrated in the front-back direction along the periphery of the rotating disc 34, in the embodiment, the pin holes 34-1 are arranged in a mode that the mutual central angle is 30 degrees, the center of the rotating disc 34 is provided with the shaft hole, and the rotating disc 34 is fixedly arranged on the rotating shaft 32 through interference fit with the rotating shaft 32 through the shaft hole and is positioned at the front end of the rotating disc fixing seat 33, so that the rotating disc can rotate at; the turntable positioning pin 35 is movably arranged in the pin hole of the turntable fixing seat 33, and the turntable positioning pin 35 is inserted into the pin hole 34-1 of the turntable 34 to position the turntable 34.
The hoop 36 mainly comprises a body 36-1, a hinge 36-2, a connecting lug 36-3, a hoop locking handle 36-4 and a cushion layer 36-5; the body 36-1 is a semicircular annular piece, 2 bodies 36-1 are arranged, and one ends of the 2 bodies 36-1 are connected through hinges 36-2; the other ends of the 2 bodies 36-1 are respectively provided with 1 connecting lug 36-3, the connecting lugs 36-3 are provided with screw holes for connection and fastening, and 1 of the 2 connecting lugs 36-3 is fixedly connected with the front part of the rotating shaft 32, so that the hoop 36 can rotate by 360 degrees depending on the rotating shaft 32; the hoop locking handle 36-4 is used for connecting and locking the 2 connecting lugs 36-3, and the hoop locking handle 36-4 is of a screw and nut structure. Preferably, a leather cushion layer 36-5 is fixedly arranged on the inner end surface of the body 36-1, and the cushion layer 36-5 can enable the anchor ear 36 to better clamp the movable contact part of the folding arm type isolating switch in use and prevent the outer part of the movable contact part of the folding arm type isolating switch from being damaged.
Still referring to fig. 1, the structure of the first fixing part 4 for mounting and dismounting the spring is basically the same as that of the first fixing part 2 for the upper conductive arm, and the front and back directions of the installation are opposite, that is, the hand wheel for mounting and dismounting the first fixing part 4 for the spring is positioned at the back; the first spring attachment/detachment fixture 4 is vertically fixed to the upper end surface of the joint between the cross beam 11 on the rear side and the connecting beam 12 on the right side of the base 1.
The structure of the spring mounting and dismounting second fixing piece 5 is basically the same as that of the upper conductive arm first fixing piece 2, the mounting front-back direction is the same, and the spring mounting and dismounting second fixing piece 5 is vertically and fixedly arranged on the upper end surface of the joint part of the cross beam 11 positioned on the rear side and the connecting beam 12 positioned on the left side of the base 1.
As can be seen from the foregoing, the upper conductive arm first fixing member 2, the upper conductive arm second fixing member 3, the spring attachment/detachment first fixing member 4, and the spring attachment/detachment second fixing member 5 are respectively fixedly provided at 1 on the upper end surfaces of 4 joint portions of 2 beams 11 and 2 connecting beams 12 of the base 1.
The spring compression assembly 6 mainly comprises a guide rod 61, a spring extrusion piece 62, a transmission screw rod 63 and a screw rod hand wheel 64; two ends of the guide rod 61 are respectively and fixedly connected with the horizontal beams of the spring dismounting first fixing part 4 and the spring dismounting second fixing part 5; the spring extrusion piece 62 is movably sleeved on the guide rod 61; the transmission screw 63 is movably arranged on the spring dismounting second fixing part 5, the screw hand wheel 64 is arranged at the left end of the transmission screw 63 and used for driving the transmission screw 63, and the right end of the transmission screw 63 is fixedly connected with the spring extrusion part 62, so that when the screw hand wheel 64 is rotated clockwise, the spring extrusion part 62 moves rightwards, and when the screw hand wheel 64 is rotated anticlockwise, the spring extrusion part 62 moves leftwards. When in use, the spring compression assembly 6 is mainly used for dismounting and mounting the clamping spring in the upper conductive arm.
Referring to fig. 4 and 5, a method for performing maintenance on a folding arm type disconnecting switch by using a dedicated tooling platform designed in a matching manner will be described below by taking maintenance on a GW16 type folding arm type disconnecting switch 7 (hereinafter referred to as a disconnecting switch) which is used in a line in a large amount as an example.
The GW16 type folding arm type isolation switch 7 comprises the following components in sequence from bottom to top: the porcelain insulator support and the rotary porcelain insulator (not shown in the figure) are fixedly arranged at the lower end of the base 71, a connecting mechanism (not marked in the figure) comprising a fixed hoop is used for connecting the base 71 with the lower conducting arm 77, the lower conducting arm comprises a lower conducting tube 77 and a lower operating rod arranged in the lower conducting tube 77, an intermediate joint 76 used for connecting the lower conducting arm with the upper conducting arm is used for connecting the lower conducting arm, the upper conducting arm comprises an upper conducting tube 72, an upper operating rod 73 and a clamping spring 74 which are arranged in the upper conducting tube 72, and a moving contact assembly 75 arranged at the upper end of the upper conducting tube, and the moving contact assembly 75 comprises a moving contact seat 75-1, a moving contact, conductive strips arranged on two sides of the moving contact seat, an arc-striking ring, a waterproof rubber ring (not marked in the figure) and other.
The overhauling method of the embodiment mainly comprises the following steps:
①, pushing the special tooling platform to a proper station required by the maintenance of the isolating switch by using 4 traveling wheels 15 on the base 1 of the special tooling platform, pulling out 2 telescopic beams 13 of the base 1 in a proper amount, grounding 5 adjustable supporting feet 14, monitoring each level gauge 16, adjusting the vertical height of each adjustable supporting foot 14, and adjusting the special tooling platform to a horizontal state.
② fixing the isolating switch, namely, placing the isolating switch at a switch-off position (namely, the upper and lower conductive arms are in folded states), binding the upper and lower conductive arms of the isolating switch firmly by lead wires (after the rotary porcelain insulator is removed, the isolating switch is in an energy storage state under the action of a switch-off spring, if the isolating switch is not bound firmly, the isolating switch can be popped out to cause mechanical injury to people), removing the support porcelain insulator and the rotary porcelain insulator, hoisting the isolating switch to the special tool platform by a crane, aligning the wiring bolt holes on two sides of the isolating switch base 71 with the isolating switch seat fixing holes 12-1 on the 2 connecting beams 12 of the special tool platform base 1, and then screwing and fixing by M12 bolts.
③ conductive arm detachment:
the first step is as follows: on the premise that the isolating switch is in the opening position, taking down a cotter pin, a roller and a shaft pin at the lower end of the conducting tube assembly on the isolating switch;
the second step is that: the sealing silica gel around the rubber corrugated pipe assembled on the upper conductive pipe is removed and taken down;
the third step: loosening a positioning screw on the upper conductive pipe assembly to the maximum position or taking down the positioning screw by using a No. 10 open wrench or an adjustable wrench;
the fourth step: loosening the 2M 14 fastening bolts connecting the upper conductive tube 72 and the middle joint 76 to the maximum position or removing the fastening bolts, and then properly expanding the fixing hoops for connecting the upper conductive tube 72 and the middle joint 76 by using wedges;
the fifth step: opening the hoop 36 of the special tooling platform, pulling out the upper conductive arm, placing the movable contact base 75-1 of the upper conductive arm in the hoop 36, and clockwise rotating the hoop locking handle 36-4 to enable the hoop 36 to tightly hold and fix the movable contact base 75-1 of the upper conductive arm; in the step of placing the lower part of the upper conductive arm on the horizontal beam 22 of the first fixing part 2 of the upper conductive arm of the special tooling platform and between the fixed clamping plate 23 and the movable clamping plate 24, when the upper conductive arm is pulled out, the middle joint 76 is firstly pressed and then slowly loosened to the switching-on position, so as to prevent the middle joint 76 from popping out and injuring people.
④ center joint 76 disassembled:
the first step is as follows: loosening the middle connector 76 to the maximum position or taking down the clamping bolt and the positioning bolt which are positioned at the side of the lower conductive tube 77 of the isolating switch, and expanding the fixed hoop for connecting the middle connector 76 and the lower conductive tube 77 by using a wedge;
the second step is that: the yoke portion of the intermediate joint is rotated in the closing direction, and then rotated at a predetermined angle after passing over the closing position, so that the intermediate joint gear is disengaged from the lower lever rack in the lower contact tube 77, and the intermediate joint 76 is removed.
⑤ lower conductive arm detachment:
the first step is as follows: loosening the holding and clamping bolt of the isolating switch base 71, loosening the positioning bolt of the base 71 to the maximum position or taking down the positioning bolt by using a No. 10 open wrench or an adjustable wrench, and properly expanding a fixing hoop for connecting the base 71 and the lower conductive tube 77 by using a wedge;
the second step is that: removing a connecting shaft pin between the lower operating rod adjustable connecting assembly and the base 71;
the third step: after slowly reversing to the open position, the lower contact tube 77 and the lower operating rod are removed.
⑥ disintegration of the upper conductive arm:
the first step is as follows: loosening the positioning screw of the movable contact seat 75-1 to the maximum position or taking down the positioning screw by using a No. 10 open wrench or an adjustable wrench, loosening the M12 hoop bolt to the maximum position or taking down the positioning screw, and properly expanding the fixed hoop connected between the movable contact seat 75-1 and the upper conductive pipe 72 by using a wedge;
the second step is that: pulling out the upper conductive tube 72 from the fixed hoop;
the third step: removing the split pin on the B-shaped pin on the side of the upper conductive arm return spring;
the fourth step: the relative positions of the B-shaped pin mounting holes are marked on the upper operating rod 73 of the upper conductive arm and the insulating rod;
the fifth step: the upper operating rod 73 is properly pushed (against the elastic force of the return spring in the upper conductive tube 72) to punch out the B-shaped pin on the side of the return spring of the insulating rod;
and a sixth step: the upper conductive arm moving contact assembly 75 is separated from the upper operating rod 73.
⑦ detaching of clamping spring:
the first step is as follows: two ends of an upper operating rod 73 are respectively arranged on a spring dismounting first fixing part 4 and a spring dismounting second fixing part 5 of a special tool platform, and respective hand wheels are rotated to enable respective movable clamping plates to move towards the fixed clamping plates so as to clamp and fix the two ends of the upper operating rod;
the second step is that: the spring extrusion piece 62 of the spring compression assembly 6 of the special tooling platform is abutted against the clamping spring 74, the screw rod hand wheel 64 is rotated clockwise, and the spring extrusion piece 62 moves along the guide rod 61 under the pushing of the transmission screw rod 63 to further compress the clamping spring 74;
the third step: punching elastic cylindrical pins at two ends of a clamping spring 74 arranged on the upper operating rod 73 by using a punch with phi 7.6 and phi 4, wherein the punch is firstly internally pinned and then externally pinned;
the fourth step: rotating the lead screw hand wheel 64 in a counterclockwise direction releases the energy of the clamping spring 74 to a natural state;
the fifth step: the upper operating lever 73 is taken down from the special tooling platform, and then the clamping spring 74, the gasket and the sleeve are taken down from the upper operating lever 73, so that each part is overhauled.
⑧ moving contact assembly 75 is disassembled:
the first step is as follows: pulling out the turntable positioning pin 35 of the second fixing member 3 of the upper conductive arm of the special tooling platform, rotating the turntable 34 to adjust the movable contact assembly 75 to a position convenient for disassembly operation, and then inserting the turntable positioning pin 35 to fix the position of the movable contact assembly 75;
the second step is that: sequentially removing the conductive bands, the arc striking rings, the waterproof rubber rings and other parts on the two sides of the movable contact seat 75-1;
the third step: punching out 4 phi 3 multiplied by 20 elastic pins at two ends of 2 moving contact mounting shafts of the moving contact assembly 75 by using a phi 3 punch, and taking out the 2 moving contact mounting shafts;
the fourth step: the moving contact piece of the moving contact assembly 75 and the four-bar assembly are pulled out, and the disassembly and the overhaul are further carried out.
⑨ reinstalling after each part is overhauled:
the first step is as follows: processing, cleaning and checking according to the standard requirements of the maintenance process; replacing unqualified parts;
the second step is that: the assembling components of the isolating switch are reassembled according to the sequence opposite to the disassembling sequence, and a layer of thin conductive paste is smeared on the contact surface between the conductive members; the bolts used for connection should retest the moment according to the product requirement.
⑩ debugging:
the first step is as follows: placing the isolating switch in a closing state;
the second step is that: the lower conductive arm is adjusted to be vertical by adjusting the length of the double connecting rods on the base 71;
the third step: the upper conductive arm is adjusted to be in a vertical state by adjusting the length of the adjustable connection assembly between the lower conductive arm and the base 71;
the fourth step: the double connecting rods on the base 71 and the crank arm of the base 71 should pass through a dead point by 1-2 degrees;
the fifth step: and testing the whole loop resistance of the isolating switch by matching with a static contact of the isolating switch.
The above embodiments are illustrative of specific embodiments of the present invention, and are not restrictive of the present invention, and those skilled in the relevant art can make various changes and modifications without departing from the spirit and scope of the present invention to obtain corresponding equivalent technical solutions, and therefore all equivalent technical solutions should be included in the scope of the present invention.
Claims (4)
1. A method for overhauling a folding arm type isolating switch is characterized by comprising the following steps: the special tool platform is implemented by using a matched special tool platform, and comprises a base, an upper conductive arm first fixing piece, an upper conductive arm second fixing piece, a spring dismounting first fixing piece, a spring dismounting second fixing piece and a spring compression assembly, wherein the upper conductive arm first fixing piece, the upper conductive arm second fixing piece, the spring dismounting first fixing piece and the spring dismounting second fixing piece are fixedly arranged on the base; the base is provided with traveling wheels, a telescopic beam, adjustable supporting legs and a level gauge; the first fixing piece of the upper conductive arm comprises a vertical beam fixedly connected with the base, a horizontal beam vertically and integrally connected with the vertical beam, a fixed clamping plate fixedly arranged on the horizontal beam, a screw rod movably arranged in the horizontal beam, a movable clamping plate fixedly arranged on the screw rod and a hand wheel fixedly arranged at the front end of the screw rod; the structure of the first fixing piece and the second fixing piece which are assembled and disassembled by the spring is the same as that of the first fixing piece of the upper conductive arm; the second fixing part of the upper conductive arm comprises a second vertical beam fixedly connected with the base, a rotating shaft movably arranged at the upper part of the second vertical beam in the front-back direction, a rotary table fixing seat penetrating through the rotating shaft and fixedly arranged at the upper part of the second vertical beam, a rotary table fixedly arranged on the rotating shaft and positioned in front of the rotary table fixing seat and provided with a plurality of pin holes, a rotary table positioning pin movably arranged on the rotary table fixing seat and used for matching with the pin hole of the rotary table to lock the rotary table, and a hoop fixedly arranged at the front end of the rotating shaft and capable of being opened and closed; the spring compression assembly comprises a guide rod, a spring extrusion piece, a transmission screw rod and a screw rod hand wheel, wherein two ends of the guide rod are fixedly connected with the first spring mounting and dismounting part and the second spring mounting and dismounting part respectively; the other end of the transmission screw rod is fixedly connected with the spring extrusion piece;
the overhauling method comprises the following steps:
① moving the special tool platform to a set station and horizontally calibrating, namely pushing the special tool platform to a station required by the maintenance of the isolating switch by using a travelling wheel on the base of the special tool platform, pulling out a telescopic beam of the base in a proper amount, grounding the adjustable supporting feet of the base, monitoring each level instrument, adjusting the vertical height of the adjustable supporting feet, and adjusting the special tool platform to a horizontal state;
② fixing the isolating switch, namely, placing the isolating switch at a brake separating position, binding the upper and lower conductive arms of the isolating switch firmly, removing a supporting porcelain insulator and a rotating porcelain insulator of the isolating switch, then hoisting the isolating switch to the special tool platform by using a crane, and fixedly connecting the base of the isolating switch with the base of the special tool platform by using bolts;
③ conductive arm detachment:
the first step is as follows: on the premise that the isolating switch is in the opening position, taking down a cotter pin, a roller and a shaft pin at the lower end of the conducting tube assembly on the isolating switch;
the second step is that: the sealing silica gel around the rubber corrugated pipe assembled on the upper conductive pipe is removed and taken down;
the third step: loosening a positioning screw assembled on the upper conductive tube to the maximum position or taking down the positioning screw by using a spanner;
the fourth step: loosening the fastening bolt for connecting the upper conductive pipe and the middle joint to the maximum position or taking down the fastening bolt, and properly expanding the fixing hoop for connecting the upper conductive pipe and the middle joint by using a wedge;
the fifth step: opening the hoop of the special tooling platform, pulling out the upper conductive arm, and locking the movable contact seat of the upper conductive arm after the movable contact seat is arranged in the hoop; the lower part of the upper conductive arm is arranged on a horizontal beam of a first fixing piece of the upper conductive arm of the special tool platform and is positioned between the fixed clamping plate and the movable clamping plate;
④ disassembling the middle joint:
the first step is as follows: loosening a clamping fixing bolt and a positioning bolt of the middle connector of the isolating switch close to the lower conductive tube side to the maximum position or taking down the middle connector and the positioning bolt, and expanding a fixing hoop for connecting the middle connector and the lower conductive tube by using a wedge;
the second step is that: rotating a connecting fork part of the middle joint in a closing direction, crossing a closing position and then rotating for a certain angle to enable a gear of the middle joint to be disengaged from a rack of a lower operating rod in the lower conductive pipe, and taking down the middle joint;
⑤ lower conductive arm detachment:
the first step is as follows: loosening a holding clamping fixing bolt of the isolating switch base, loosening a positioning bolt of the base to the maximum position or taking down the positioning bolt by using a spanner, and properly expanding a fixing hoop for connecting the base and the lower conductive tube by using a wedge;
the second step is that: removing a connecting shaft pin between the adjustable connecting assembly of the lower operating rod and the base;
the third step: after slowly reversing to the opening position, the lower conductive tube and the lower operating rod are disassembled;
⑥ disintegration of the upper conductive arm:
the first step is as follows: loosening a positioning screw and an anchor ear bolt of a movable contact seat in the assembly of the movable contact of the isolating switch to the maximum position or taking down the movable contact seat by using a spanner, and properly expanding a fixed anchor ear connected between the movable contact seat and an upper conductive tube by using a wedge; pulling out the upper conductive tube;
the second step is that: removing the split pin on the B-shaped pin on the side of the upper conductive arm return spring;
the third step: marking the relative positions of the B-shaped pin mounting holes on the upper operating rod and the insulating rod of the upper conductive arm;
the fourth step: properly pushing the upper operating rod to punch out a B-shaped pin at the side of the return spring of the insulating rod;
the fifth step: separating the moving contact assembly of the upper conductive arm from the upper operating rod;
⑦ detaching of clamping spring:
the first step is as follows: two ends of the upper operating rod are respectively arranged on a first fixing piece and a second fixing piece for assembling and disassembling a spring of the special tool platform, and respective hand wheels are rotated to enable respective movable clamping plates to move towards the fixed clamping plates so as to clamp and fix two ends of the upper operating rod;
the second step is that: a spring extrusion piece of a spring compression assembly of the special tool platform is abutted against a clamping spring, and a screw mandrel hand wheel is rotated to drive the spring extrusion piece to move along a guide rod through a transmission screw mandrel so as to further compress the clamping spring;
the third step: punching elastic cylindrical pins which are arranged on the upper operating rod and are positioned at two ends of the clamping spring by using a punch according to the sequence of the inner pin and the outer pin;
the fourth step: rotating a screw rod hand wheel, releasing the energy of a clamping spring to a natural state, taking an upper operating rod down from a special tool platform, taking the clamping spring, a gasket and a sleeve down from the upper operating rod, and overhauling each part;
⑧ moving contact assembly disassembly:
the first step is as follows: pulling out a turntable positioning pin of a second fixing piece of an upper conductive arm of the special tooling platform, rotating a turntable to assemble and adjust the movable contact to a position convenient for disassembly operation, and then inserting the turntable positioning pin to fix the position of the movable contact assembly;
the second step is that: sequentially removing the conductive band, the arc striking ring and the waterproof rubber ring on the two sides of the movable contact seat;
the third step: punching out elastic pins at two ends of 2 movable contact spring mounting shafts assembled on the movable contact by using a punch, and taking out the 2 movable contact spring mounting shafts;
the fourth step: pulling out the movable contact piece assembled by the movable contact and assembling the four connecting rods, and further disassembling and overhauling the movable contact piece and the four connecting rods;
⑨ reinstalling after overhaul treatment:
the first step is as follows: cleaning and checking the disassembled parts; replacing unqualified parts;
the second step is that: the parts of the isolating switch are reassembled according to the sequence opposite to the disassembly sequence, and a layer of thin conductive paste is smeared on the contact surface between the conductive members; the bolts for connection measure the moment again;
⑩ debugging:
the first step is as follows: placing the isolating switch in a closing state;
the second step is that: the length of the double connecting rods on the base is adjusted to adjust the lower conductive arm to be in a vertical state, and the double connecting rods on the base and the crank arm of the base 71 should pass through a dead point by 1-2 degrees;
the third step: adjusting the upper conductive arm to be in a vertical state by adjusting the length of the adjustable connection assembly between the lower conductive arm and the base;
the fourth step: and testing the whole loop resistance of the isolating switch by matching with a static contact of the isolating switch.
2. The method for overhauling the folding arm type disconnecting switch according to claim 1, wherein the method comprises the following steps: the base of the special tool platform comprises 2 cross beams which are arranged in parallel in the front and back direction, 2 connecting beams which are arranged in parallel in the left and right direction and connect the 2 cross beams, 2 telescopic beams which are respectively arranged in the 2 cross beams and can be telescopic to the same side by depending on the 2 cross beams, 1 total 5 adjustable supporting legs are respectively arranged at each end of the 2 cross beams and the 2 telescopic beams and the middle parts of the 1 connecting beams, and 1 total 4 travelling wheels are respectively arranged at the outer sides of the two ends of the 2 cross beams; the 2 cross beams and the 2 connecting beams form a square frame structure, and the square frame structure is provided with 4 corner parts in front, back, left and right; the upper conductive arm first fixing piece is fixedly arranged above the corner part at the left front part of the square frame structure; the upper conductive arm second fixing piece is fixedly arranged above the corner part at the right front of the square frame structure; the spring dismounting first fixing piece is fixedly arranged above the corner part at the right rear side of the square frame structure; the spring dismounting second fixing piece is fixedly arranged above the corner part at the left rear part of the square frame structure; the gradienter is respectively arranged on the cross beam and the connecting beam of the base.
3. The method for overhauling the folding arm type disconnecting switch according to claim 1, wherein the method comprises the following steps: the hoop of the second fixing piece of the conductive arm on the special tool platform comprises 2 semicircular bodies, a hinge for hinging one end of each of the 2 bodies, connecting lugs fixedly arranged at one end of each of the 2 bodies and a hoop locking handle for locking or unlocking the 2 connecting lugs; the hoop locking handle is of a screw and nut structure; and a leather cushion layer is fixedly arranged in the hoop.
4. The method for overhauling the folding arm type disconnecting switch as recited in claim 1, wherein: the turntable of the second fixing part of the conductive arm on the special tool platform is a circular structural part, and the pin holes are uniformly arranged at intervals along the peripheral part of the turntable in a mode that the central angles of the pin holes are 30 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811553559.1A CN109787130B (en) | 2018-12-19 | 2018-12-19 | Folded arm type isolating switch overhauling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811553559.1A CN109787130B (en) | 2018-12-19 | 2018-12-19 | Folded arm type isolating switch overhauling method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109787130A CN109787130A (en) | 2019-05-21 |
| CN109787130B true CN109787130B (en) | 2020-05-01 |
Family
ID=66497286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811553559.1A Active CN109787130B (en) | 2018-12-19 | 2018-12-19 | Folded arm type isolating switch overhauling method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109787130B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110542362B (en) * | 2019-09-04 | 2021-06-15 | 长沙长泰智能装备有限公司 | Lottery stack height detection method |
| CN112493820A (en) * | 2020-12-21 | 2021-03-16 | 重庆田之乐农业发展股份有限公司 | Peeling thickness adjustable fruit vegetables are peeled and are used equipment |
| CN112786342B (en) * | 2021-03-25 | 2022-05-13 | 安徽五星高新材料有限公司 | Support base for isolating switch and use method thereof |
| CN116780383A (en) * | 2023-07-27 | 2023-09-19 | 东莞赋安实业有限公司 | Maintenance equipment for folding arm type isolating switch |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203367139U (en) * | 2011-12-28 | 2013-12-25 | 通用设备和制造公司 | Proximity switch and proximity switch assembly |
| CN103441435B (en) * | 2013-08-26 | 2016-09-07 | 国网河南省电力公司郑州供电公司 | Disconnecting switch overhaul chassis |
| CN204376276U (en) * | 2015-01-23 | 2015-06-03 | 江苏省电力公司常州供电公司 | Specific purpose tool changed by a kind of switch touching thrum spring |
| CN107634469B (en) * | 2015-01-23 | 2019-03-15 | 中国电力科学研究院 | Lower-cost switch touching thrum spring replaces specific purpose tool |
| CN206480967U (en) * | 2017-02-16 | 2017-09-08 | 国家电网公司 | A kind of improved disconnecting switch inspection platform |
-
2018
- 2018-12-19 CN CN201811553559.1A patent/CN109787130B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109787130A (en) | 2019-05-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109787130B (en) | Folded arm type isolating switch overhauling method | |
| CN110474179B (en) | Variable-angle grounding wire clamp and application method thereof | |
| CA2823132C (en) | Maintenance tool used for direct current transmission line | |
| CN109787152B (en) | Overhead line lightning protection electricity inspection loop line clamp insulation shield dismounting device | |
| CN109986498B (en) | 10kV centrally installed switchgear breaker energy storage spring dismounting tool | |
| CN109787131B (en) | Special tool platform for overhauling folding arm type isolating switch | |
| CN112454274A (en) | Breaker contact spring dismounting device | |
| CN110091279B (en) | Method for disassembling and assembling energy storage spring of breaker of 10kV centrally installed switchgear | |
| CN212683854U (en) | Combined tool for disassembling and assembling isolating switch clamping spring | |
| CN209313278U (en) | A kind of folding-jib disconnecting switch maintenance special tooling platform | |
| CN201075337Y (en) | Apparatus for integral sheathing and pressing voltage transformer body | |
| CA2823137C (en) | Maintenance tool used for double insulator strings of direct current transmission line | |
| CN209936804U (en) | 10kV centrally installed switchgear circuit breaker energy storage spring dismounting tool | |
| CN217403963U (en) | Marine wind power GIS barrel material structure compressive strength testing arrangement | |
| CN107257040B (en) | Pull-back swing arm type short circuit grounding wire clamp and grounding and disassembling method | |
| CN202241064U (en) | Disassembling tool of insulated sealing caps for spare-use interval contacts of a looped network cabinet or a distribution box or a box transformer | |
| CN106181866B (en) | Electric power network High Voltage Outdoor formula disconnecting switch connecting rod straight pin dismantles portable instrument | |
| CN201332228Y (en) | Special tool for disassembling crank arm copper sleeves arranged at the base of oil-minimum breaker | |
| CN219842466U (en) | PT withstand voltage test tool device | |
| CN221118463U (en) | Battering ram assembly quality | |
| CN209478077U (en) | Battery core module device for disassembling | |
| CN216250444U (en) | Disjunction type switch handle of electrical cabinet | |
| CN215768653U (en) | Clamp for high-current test of arrester resistor disc | |
| CN219018278U (en) | Electric shock prevention pushing structure of switch cabinet electricity inspection handcart | |
| CN221199836U (en) | Withstand voltage test device of insulating equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |