CN111509647A - Automatic short circuit joint control device for direct-current deicing of transmission conductor - Google Patents
Automatic short circuit joint control device for direct-current deicing of transmission conductor Download PDFInfo
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- CN111509647A CN111509647A CN202010342420.3A CN202010342420A CN111509647A CN 111509647 A CN111509647 A CN 111509647A CN 202010342420 A CN202010342420 A CN 202010342420A CN 111509647 A CN111509647 A CN 111509647A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/16—Devices for removing snow or ice from lines or cables
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/20—Spatial arrangements or dispositions of lines or cables on poles, posts or towers
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P5/00—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors
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- Power Engineering (AREA)
- Motor And Converter Starters (AREA)
Abstract
The automatic short circuit joint control device for direct current ice melting of the transmission conductor is characterized by comprising a miniature track, a track motion system, a first crank arm system, a second crank arm system, a moving contact of a neutral wire, a fixed contact on a jumper, an electric push rod drive circuit and a track motion system forward and reverse rotation drive circuit, wherein the track motion system is reversely hung on the miniature track arranged on a cross arm of a tension tower, the track motion system is fixedly connected with the first crank arm system, the second crank arm system is connected with the first crank arm system through a connecting rod, the track motion system, the first crank arm system and the second crank arm system are arranged in a body shell, the moving contact at the extending end of the second crank arm system is arranged on the outer wall of the body shell, and the moving contact connected with the neutral wire is in contact with the fixed contact on the jumper, so that any two-phase line is in short circuit alternately to achieve line ice melting. The ice melting device has the advantages of reasonable structure, reliable performance, high automation degree, high operation efficiency, good ice melting effect and the like, and can ensure stable and safe operation of the power transmission line.
Description
Technical Field
The invention relates to the field of operation and maintenance of power transmission lines, in particular to an automatic short-circuit joint control device for direct-current deicing of a power transmission conductor.
Background
The ice coating on the line can induce the accidents of wire overload and wire galloping, wire breakage and even continuous collapse of the power transmission line, and the like, and the power grid is seriously damaged.
The existing ice melting methods are divided into three categories: natural ice melting method, mechanical ice melting and thermal ice melting. The natural ice melting speed is too slow. The mechanical ice melting method mainly comprises electrification and non-electrification, wherein the electrification is mainly carried out by using a helicopter or a shotgun, the efficiency is very low although the operation is simple, and the non-electrification is mainly carried out by people going to a tower for ice melting, so that the method has great danger. The thermal ice melting method requires power-off operation, which causes huge economic loss.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides the automatic short-circuit joint control device for the direct-current deicing of the transmission conductor, which has the advantages of reasonable structure, reliable performance, high automation degree, high operation efficiency and good deicing effect and ensures the stable and safe operation of the transmission line.
The purpose of the invention is realized by the following technical scheme: an automatic short-circuit joint control device for direct-current deicing of a power transmission conductor is characterized by comprising a miniature track, a track motion system, a first crank arm system, a second crank arm system, a moving contact of a neutral wire, a static contact on a jumper, an electric push rod drive circuit and a forward and reverse rotation drive circuit of the track motion system, a miniature track is arranged on the cross arm of the strain tower, a caterpillar band motion system is hung upside down on the miniature track, the caterpillar band motion system is fixedly connected with a first crank arm system, a second crank arm system is connected with the first crank arm system through a connecting rod, the crawler motion system, the first crank arm system and the second crank arm system are all arranged in the machine body shell, a moving contact located at the extending end of the second crank arm system is arranged on the outer wall of the machine body shell, and the moving contact connected with the neutral line is in contact with a fixed contact, arranged on a jumper wire, of the other end of the cross arm, so that any two-phase line is in short circuit at intervals to achieve line ice melting.
The first crank arm system includes: the backup pad, the fixed axle, the pivot fixed block, first crank arm fixed axle, the fixed lantern ring of diplopore, fixed U type lantern ring, articulated connecting rod group, the push rod control head, electric putter, the connecting rod, two electric putter one end rigid coupling respectively is in the backup pad, the other end and fixed axle rigid coupling, the fixed axle is fixed with the pivot fixed block, fixed axle and first crank arm fixed axle are connected to the fixed lantern ring of diplopore, the both ends at first crank arm fixed axle are installed to fixed U type lantern ring, the tip at two electric putter is installed to the push rod control head, first crank arm fixed pole both ends at the horizontally are fixed to articulated connecting rod group one end, the other end is fixed in the backup pad. And a connecting rod is arranged at the horizontal middle part of the first crank arm fixing shaft and directly continues to the second crank arm system.
The second crank arm system includes: the connecting rod, first bearing board, U type fixed plate, the push rod head, the fixed axle, the fixed lantern ring is fixed to the U type, U type connecting rod, the apparatus further comprises a rotating shaft, U type carousel, the second crank arm pole, the second crank arm limiting plate, U type fixed plate rotates spacing axle, the second bearing board, push rod head of tip installation of connecting rod, the fixed axle runs through the push rod head and sets up on first bearing board, the both sides of first bearing board are rotated spacing hub connection through two U type fixed plates and U type fixed plate, the pivot runs through two U type fixed plates, U type carousel swing joint is on the pivot, second crank arm pole bottom rigid coupling U type carousel, second crank arm limiting plate rigid coupling is on second bearing board, the second crank arm pole runs through the second crank arm limiting plate, stretch out the end rigid coupling.
The neutral wire is fixed on the body shell, is arranged below the movable contact and is fixedly connected with the movable contact, the other end of the neutral wire is connected with the wire nose on the cross arm along the body shell, the wire nose is connected with the neutral wire and the cables, the cables are laid on the three cross arms of the strain tower along the main material respectively, and the T-shaped cable terminal is connected with the three cables and distributed at the joint of the strain tower and the main material; and a suspension insulator string is arranged on a jumper wire at the other end of the cross arm, and the confluence wire clamp is fixedly connected with the fixed contact and positioned at two ends of the suspension insulator string.
The caterpillar movement system comprises: the motor is arranged on the main transmission shaft, the other end of the main transmission shaft is fixedly connected with the conical gear, and the left end and the right end of the conical gear are meshed with each other by left curved teeth and right curved teeth; one side of one of the curved teeth is connected with an auxiliary transmission shaft, and a small gear connected with the auxiliary transmission shaft is meshed with a large gear below the auxiliary transmission shaft; the large gear is connected with at least two cylindrical gears through another auxiliary transmission shaft, and the crawler belt is wound on the two meshed cylindrical gear sets; the structure of one side of the other curved tooth is radially symmetrical with the other curved tooth; the motor controls the initial start of the track by an electric push rod driving circuit.
The electric putter drive circuit includes: the device comprises a double-pole single-throw switch QF1, a time-delay relay KT1, a time-delay relay normally-closed contact KT1-2, a second contactor KM2, a second contactor main contact KM2-4, a third contactor KM3, a third contactor main contact KM3-4, a motor M1, a resistor R1, a resistor R2, a button SB1, a button SB2, a first contactor KM1, a first contactor auxiliary normally-open contact KM1-1, a first contactor self-locking contact KM1-3, a first contactor main contact KM1-4, a time-delay relay KT2 and a time-delay relay normally-closed contact KT2-2 which are electrically connected.
The positive and negative rotation driving circuit of the caterpillar band moving system comprises: the device comprises a double-pole single-throw power switch QF2, a time-delay relay KT3, a time-delay relay normally-closed contact KT3-2, a fourth contactor KM4, a fourth contactor auxiliary normally-open contact KM4-1, a fourth contactor auxiliary normally-closed contact KM4-2, a fourth contactor self-locking contact KM4-3, a fourth contactor main contact KM4-4, a fifth contactor KM5, a fifth contactor auxiliary normally-open contact KM5-1, a fifth contactor auxiliary normally-closed contact KM5-2, a fifth contactor self-locking contact KM5-3, a fifth contactor main contact KM5-4, a fourth contactor interlocking main contact KM4-5, a fifth contactor interlocking main contact KM5-5, a sixth contactor KM6, a sixth contactor main contact KM6-4, a motor M2, a button SB3, a button SB4 and a button SB5 which are electrically connected.
The working process of the automatic short-circuit joint control device for direct-current deicing of the transmission conductor comprises the following steps: the caterpillar band moving system is initially arranged at one end of the cross arm close to the strain tower body. When the power supply is switched on after the ground manual remote control signal is received, the electric push rod driving circuit and the forward and reverse rotation driving circuit of the track moving system are automatically started to be simultaneously connected with electricity, so that the short circuit joint control device can complete the action of advancing or retreating. When the device slowly moves to the other end of the cross arm, the first crank arm system drives the second crank arm system through the extending connecting rod of the electric push rod, the second crank arm extends out of the moving contact and is contacted with the fixed contact on the jumper wire of the tower, because the moving contact is connected with the cable through the neutral line, when any two crawler movement systems move to enable the moving contact and the fixed contact to be contacted, any two-phase line generates short circuit, and the conductor surface of any two-phase line generates high heat to meet the requirement of short circuit ice melting.
The automatic short circuit joint control device for direct current ice melting of the transmission conductor is the combination of electric collection automation and electromechanical integration, and compared with the existing ice melting system, the automatic short circuit joint control device has the technical advantages that:
1. enabling multiple transmission towers to start operating simultaneously;
2. the plurality of cross arms start to work simultaneously, so that the working efficiency is high;
3. the ice melting speed is controlled electronically and is higher than that of the existing ice melting method;
4. the degree of automation is high, the ice melting system is automatically started, and the movable contact and the fixed contact are automatically contacted;
5. the device avoids fatigue acceleration of the lead and prolongs the service life of the lead;
6. the device has low energy consumption, and can achieve the same ice melting effect as the device with high energy consumption;
7. the miniature motion ice melting device is small in size, and does not bring extra burden to the power transmission tower;
8. the structure is reasonable, and the performance is reliable;
9. the workload of operation and maintenance personnel is reduced, and the safe and stable operation of the line is ensured.
Drawings
FIG. 1 is a schematic diagram of a transmission conductor DC ice melting automatic short circuit joint control device arranged on a tower system;
FIG. 2 is a plan view of FIG. 1;
FIG. 3 is a caterpillar movement system diagram of an automatic short-circuit joint control device for direct-current deicing of transmission conductors;
FIG. 4 is a first crank system diagram of an automatic short-circuit joint control device for direct-current deicing of transmission conductors;
FIG. 5 is a diagram of a second crank arm system of an automatic short-circuit joint control device for direct-current deicing of a transmission conductor;
FIG. 6 is a driving circuit diagram of an electric push rod of an automatic short-circuit joint control device for direct-current deicing of a transmission conductor;
FIG. 7 is a circuit diagram of a forward and reverse rotation driving circuit of a caterpillar band moving system of an ice melting device suitable for transmission lines in various regions.
In the figure: 2 crawler movement system, 3 first crank arm system, 4 second crank arm system, 9 confluence wire clamp, 10 suspension insulator string, 11 leading-out wire, 12 micro track, 17T type cable terminal, 18 wire nose, 19 neutral wire, 20 static contact, 21 movable contact, 22 neutral wire clamp, 23 insulation rubber cushion layer, 24 motor, 25 main transmission shaft, 26 conical gear, 27 curved tooth, 28 curved tooth, 29 auxiliary transmission shaft, 30 auxiliary transmission shaft, 31 small gear, 32 small gear, 33 large gear, 34 large gear, 35 auxiliary transmission shaft, 36 auxiliary transmission shaft, 37 cylindrical gear, 38 cylindrical gear, 39 cylindrical gear, 40 cylindrical gear, 41 crawler belt, 42 crawler belt, 44 support plate, 46 rotating shaft fixing block, 47 fixing shaft, 48 first crank arm, 49 double-hole fixing collar, 50 fixing U-shaped collar, 51 first connecting rod, 52 second connecting rod, 53 third connecting rod, 54 fourth connecting rod, 56 electric push rod, 57 electric push rod, 59 connecting rod, 60 bearing plate, 61U-shaped fixing plate, 62U-shaped fixing plate, 63 push rod head, 64 fixing shaft, 65U-shaped fixing ring, 66U-shaped fixing ring, 67U-shaped connecting rod, 68U-shaped connecting rod, 69 rotating shaft, 70U-shaped rotating disc, 71 second crank arm rod, 72 second crank arm limiting plate, 74U-shaped fixing plate rotation limiting shaft, 76 bearing plate, 119 strain tower, 120 first lead, 124 jumper wire, 125 cross arm and 126 main material.
Detailed Description
The invention is described in more detail below with reference to the figures and the specific examples.
Referring to fig. 1, the automatic short-circuit joint control device for direct-current deicing of the power transmission conductor is installed on a tension tower 119 of a 500kV four-split conductor, the currents of the four-split conductor are converged by a converging clamp 9, the converging clamp 9 is welded to a jumper wire 124, a section of outgoing line 11 is connected to the other end of the jumper wire 124, and a static contact 20 is welded to the outgoing line 11. The miniature track 12 is hung upside down on the angle steel of the cross arm 125 by bolts, and the miniature track 12 is provided with a groove for fixing the crawler movement system 2, so that the short circuit joint control device is hung upside down on the cross arm. The copper braided wire is fixed on a fuselage shell as a neutral wire 19, one end of the copper braided wire is connected with a movable contact 21, the other end of the copper braided wire falls on a cross arm 125 along a short-circuit joint control shell and is connected with a wire nose 18, the wire nose 18 is used for connecting a cable and the neutral wire 19, the cable is conveyed to a main material 126 of the tension tower 119 along the cross arm 125 and is connected with the cable by a T-shaped cable terminal 17, the cable is laid upwards along the main material 126 to the upper cross arm 125, the cable is laid on the cross arm 125 along the main material 126, and the three-phase cross arms 125 of the tension tower 119 are connected with each other by the cable. The suspension insulator string 10 is fixed on the jumper wire 124, and the wind deflection angle of the jumper wire 124 under the action of strong wind is reduced.
Referring to fig. 2, a neutral wire clamp 22 is installed below the second crank system 2 for fixing the neutral wire 19, and an insulating rubber pad 23 is coated on the body case to prevent the body case from being damaged by current during operation.
Referring to fig. 3, the motor 24 is mounted on a main drive shaft 25, the other end of the drive shaft 25 is welded to a bevel gear 26, and the left and right ends of the bevel gear 26 are engaged with a curved tooth 27 and a curved tooth 28, respectively, and are driven by the bevel gear 26, the curved tooth 27 and the curved tooth 28. The left side of the curved tooth 27 is connected with a secondary transmission shaft 29, the right side of the curved tooth 28 is connected with a secondary transmission shaft 30, the other ends of the secondary transmission shaft 29 and the secondary transmission shaft 30 are respectively connected with a small gear 31 and a small gear 32, the lower parts of the small gear 31 and the small gear 32 are respectively meshed with a large gear 33 and a large gear 34, and the small gear 31 and the large gear 33 as well as the small gear 32 and the large gear 34 are all in external-meshing-tooth transmission. The left side of the large gear 33 is connected with a secondary transmission shaft 35, the right side of the large gear 34 is connected with a secondary transmission shaft 36, the other ends of the secondary transmission shaft 35 and the secondary transmission shaft 36 are connected with a cylindrical gear 37 and a cylindrical gear 38, the cylindrical gear 37 is meshed with the cylindrical gear 39, the cylindrical gear 38 is meshed with the cylindrical gear 39, a crawler 41 is wound on the cylindrical gear 37 and the cylindrical gear 39, a crawler 42 is wound on the cylindrical gear 38 and the cylindrical gear 40, and the crawler motion system 2 is just clamped on the miniature track 12, so that the crawler motion system 2 is inversely hung on the cross arm 125. When the motor 24, that is, the motor M2, starts to rotate clockwise, the trend of backward movement of the track motion system 2 can be achieved through the above-mentioned connection mode, and when the motor 24 starts to rotate counterclockwise, the trend of forward movement of the track motion system 2 can be achieved, and the requirement of connection and disconnection of the movable contact 21 and the fixed contact 20 can be achieved.
Referring to fig. 4, the electric push rods 56 and 57 are respectively installed at left and right sides of the supporting plate 44, the electric push rod driving circuit controls a driving motor of the electric push rod, that is, the motor M1 is started, the electric push rods 56 and 57 are respectively installed at both ends of the horizontally placed fixed shaft 47, the fixed shaft 47 is fixed by the rotating shaft fixing blocks 46, so that the fixed shaft 47 moves up and down along with the electric push rods 56 and 57 within a certain range, the double-hole fixing collar 49 is used for connecting the fixed shaft 47 and the first crank arm fixing shaft 48, and the fixing U-shaped collars 50 are installed at both ends of the first crank arm fixing shaft 48, thereby preventing the first crank arm fixing shaft 48 from generating lateral displacement. When the electric push rod 56 and the electric push rod 57 push the fixed shaft 47, no sliding is generated, and only horizontal upward thrust is generated. The first connecting rod 51 and the second connecting rod 52 are fixed at the left and right ends of the horizontal first crank arm fixing rod 48, respectively, and the other ends of the first connecting rod 51 and the second connecting rod 52 are hinged with the third connecting rod 53 and the fourth connecting rod 54, respectively. The other end of the connecting rod 53 is welded to the support plate 44. A connecting rod 59 is connected to a horizontal middle portion of the first crank arm fixing shaft 48, the connecting rod 59 is directly continued to the second crank arm system 4, and the first crank arm system 3 and the second crank arm system 4 are connected to each other.
Referring to fig. 5, the link 59 continues from the first crank system 3 to the second crank system 4, and a push rod head 63 is mounted to an end of the link 59, and the push rod head 63 functions to prevent slippage while pushing. The connecting rod 59, the push rod head 63 and the fixed shaft 64 are installed on the bearing plate 60, the U-shaped fixing plate 61 is installed on each side of the bearing plate 60, the U-shaped fixing plate 61 and the U-shaped fixing plate 62 are connected through the U-shaped fixing plate 62 through the rotation limiting shaft 74, the U-shaped fixing plate 61 and the U-shaped fixing plate 62 are in a certain angle and can protect each element of the back head, and the limiting shaft 74 is used for limiting the rotation angle of the U-shaped fixing plate 61 and the U-shaped fixing plate 62 and enabling the rotation angle to be changed in a certain range. Two U type fixed plates 61 and two U type fixed plates 62 link together through pivot 69, have a recess in the middle of the pivot and can block U type carousel 70, connect the curved arm pole 71 of second on the U type carousel 70, can rotate along with U type carousel 70's rotation, and the curved arm limiting plate 72 of second links to each other with the curved arm pole 71 of second, prevents that it from producing the rotation automatically because of gravity. The retainer plate 72 is bolted to the support plate 76. The rotating shaft 69 is provided with a U-shaped connecting rod 67 and a U-shaped connecting rod 68 which are connected through a fixed shaft 47, and the push rod head 63 just props against the fixed shaft 64. The first crank system 3 generates an upward moving thrust to the track moving system 2, the upward thrust is transmitted to the second crank system 4, the U-shaped connecting rod 67 and the U-shaped connecting rod 68 are pulled to rotate the rotating shaft 69, and the U-shaped rotating disc 70 and the second crank rod 71 are driven to rotate. The actions of extending the arm and retracting the arm of the first crank system and the second crank system are realized.
Referring to fig. 6, when the double-pole single-throw switch QF1 is turned on, after a coil of a time delay relay KT1 is electrified, a normally closed contact KT1-2 of the time delay relay is opened, and a main contact KM2-4 of a second contactor and a main contact KM3-4 of a third contactor are disconnected; then a button SB1 is pressed remotely, a coil of the first contactor KM1 is electrified, so that a self-locking contact KM1-3 and a main contact KM1-4 of the first contactor are closed, and then a motor M1 is connected with resistors R1 and R2 in series for starting; the coil of the time delay relay KT2 is electrified to cause the normally closed contact KT2-2 of the time delay relay to be opened instantly, meanwhile, the auxiliary normally open contact KM1-1 of the first contactor is disconnected to cause the coil of the time delay relay KT1 to lose current, after the time set by the time delay relay KT1, the normally closed contact KT1-2 of the time delay relay is closed, the coil of the second contactor KM2 is electrified, the main contact KM2-4 of the second contactor is closed to form a short-circuit resistor R1, and the motor M1 is continuously connected in series with the R2 to be started continuously; when the resistor R1 is in short circuit, the coil of the time delay relay KT2 is also in short circuit, after the time set by the time delay relay KT2, the normally closed contact KT2-2 of the time delay relay is recovered to be closed, so that the coil of the third contactor KM3 is electrified, the main contact KM3-4 of the third contactor is closed, the resistor R2 is in short circuit, and the motor M1 can enter a normal working state. The motor M1 provides driving torque to the electric push rods 56 and 57, and if the electric push rods 56 and 57 are required to stop working, the motor M1 stops rotating when the button SB2 is pressed by a remote controller.
Referring to fig. 7, when a double-pole single-throw power switch QF2 is turned on to switch on a power supply, a coil of a time delay relay KT3 is electrified to cause a normally closed contact KT3-2 of the time delay relay KT3 to be opened instantly, a main contact KM6-4 of a sixth contactor is in an off state, a series resistor R3 connected with a motor M2 is ensured, then a button SB3 or SB4 is pressed remotely to cause a coil of a fourth contactor KM4 or a coil of a KM5 to be electrified, and meanwhile, a self-locking contact of the fourth contactor KM4-3 or a self-locking contact of the fifth contactor KM5-3 is caused to be closed; meanwhile, the main contact of the fourth contactor KM4-4 or the main contact of the fifth contactor KM5-4 is closed; meanwhile, an auxiliary normally open contact KM4-1 of a fourth contactor or a fifth contactor KM5-1 is closed, so that preparation is made for the sixth contactor KM6 to be powered; simultaneously, the motor M2 is also connected with the resistor R3 in series for positive rotation or negative rotation; then, the fourth contactor interlocking main contact KM4-5 or the fifth contactor interlocking main contact KM5-5 is disconnected, and meanwhile, the fourth contactor auxiliary normally closed contact KM4-2 or the fifth contactor KM5-2 is disconnected; and then a coil of a time delay relay KT3 is electrified, after the setting time of the time delay relay KT3, a normally closed contact KT3-2 of the time delay relay is closed in a time delay mode, then a coil of a sixth contactor KM6 is electrified, a main contact KM6-4 of the sixth contactor is in short-circuit connection with a resistor R3, a motor M2 enters normal operation, a motor M2 drives the crawler movement system 2 to move forward and backward, and the work can be finished by remotely pressing a button SB 5.
The mechanical or electrical components used by the automatic short-circuit joint control device for direct-current deicing of the transmission conductor are commercially available products, and are easy to implement.
The prototype of the automatic short-circuit joint control device for direct-current deicing of the transmission conductor is tested and operated in the transmission and transformation operation center of northeast electric university, the operation effect is good, the purpose of the invention is achieved, and the effect is achieved.
While the present invention has been described in detail with reference to specific embodiments thereof, it will be apparent to one skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope thereof as defined in the appended claims.
Claims (7)
1. An automatic short-circuit joint control device for direct-current deicing of a power transmission conductor is characterized by comprising a miniature track, a track motion system, a first crank arm system, a second crank arm system, a moving contact of a neutral wire, a static contact on a jumper, an electric push rod drive circuit and a forward and reverse rotation drive circuit of the track motion system, a miniature track is arranged on the cross arm of the strain tower, a caterpillar band motion system is hung upside down on the miniature track, the caterpillar band motion system is fixedly connected with a first crank arm system, a second crank arm system is connected with the first crank arm system through a connecting rod, the crawler motion system, the first crank arm system and the second crank arm system are all arranged in the machine body shell, a moving contact located at the extending end of the second crank arm system is arranged on the outer wall of the machine body shell, and the moving contact connected with the neutral line is in contact with a fixed contact, arranged on a jumper wire, of the other end of the cross arm, so that any two-phase line is in short circuit at intervals to achieve line ice melting.
2. The automatic short-circuit joint control device for direct-current deicing of power transmission conductors according to claim 1, characterized in that: the first crank arm system includes: the backup pad, the fixed axle, the pivot fixed block, first crank arm fixed axle, the fixed lantern ring of diplopore, the fixed U type lantern ring, articulated connecting rod group, the push rod control head, electric putter, the connecting rod, two electric putter one end rigid coupling respectively is in the backup pad, the other end and fixed axle rigid coupling, the fixed axle is fixed with the pivot fixed block, the fixed axle of diplopore fixed lantern ring connection and first crank arm fixed axle, fixed U type lantern ring is installed at the both ends of first crank arm fixed axle, the push rod control head is installed at two electric putter's tip, articulated connecting rod group one end is fixed at the first crank arm fixed pole both ends of horizontally, the other end is fixed in the backup pad, be equipped with the connecting rod at the horizontally mid portion of first crank arm fixed axle, the connecting rod directly continues.
3. The automatic transmission conductor DC ice melting short circuit joint control device according to claim 1 or 2, characterized in that: the second crank arm system includes: the connecting rod, first bearing board, U type fixed plate, the push rod head, the fixed axle, the fixed lantern ring is fixed to the U type, U type connecting rod, the apparatus further comprises a rotating shaft, U type carousel, the second crank arm pole, the second crank arm limiting plate, U type fixed plate rotates spacing axle, the second bearing board, push rod head of tip installation of connecting rod, the fixed axle runs through the push rod head and sets up on first bearing board, the both sides of first bearing board are rotated spacing hub connection through two U type fixed plates and U type fixed plate, the pivot runs through two U type fixed plates, U type carousel swing joint is on the pivot, second crank arm pole bottom rigid coupling U type carousel, second crank arm limiting plate rigid coupling is on second bearing board, the second crank arm pole runs through the second crank arm limiting plate, stretch out the end rigid coupling.
4. The automatic short-circuit joint control device for direct-current deicing of power transmission conductors according to claim 1, characterized in that: the neutral wire is fixed on the body shell, is arranged below the movable contact and is fixedly connected with the movable contact, the other end of the neutral wire is connected with the wire nose on the cross arm along the body shell, the wire nose is connected with the neutral wire and the cables, the cables are laid on the three cross arms of the strain tower along the main material respectively, and the T-shaped cable terminal is connected with the three cables and distributed at the joint of the strain tower and the main material; and a suspension insulator string is arranged on a jumper wire at the other end of the cross arm, and the confluence wire clamp is fixedly connected with the fixed contact and positioned at two ends of the suspension insulator string.
5. The automatic short-circuit joint control device for direct-current deicing of power transmission conductors according to claim 1, characterized in that: the track motion system comprises: the track motion system comprises: the motor is arranged on the main transmission shaft, the other end of the main transmission shaft is fixedly connected with the conical gear, and the left end and the right end of the conical gear are meshed with each other by left curved teeth and right curved teeth; one side of one of the curved teeth is connected with an auxiliary transmission shaft, and a small gear connected with the auxiliary transmission shaft is meshed with a large gear below the auxiliary transmission shaft; the large gear is connected with at least two cylindrical gears through another auxiliary transmission shaft, and the crawler belt is wound on the two meshed cylindrical gear sets; the structure of one side of the other curved tooth is radially symmetrical with the other curved tooth; the motor controls the initial start and moving direction of the caterpillar by an automatic start control circuit and a forward and reverse rotation control circuit.
6. The automatic transmission conductor DC ice melting short circuit joint control device according to claim 1 or 2, characterized in that: the electric putter drive circuit includes: the device comprises a double-pole single-throw switch QF1, a time-delay relay KT1, a time-delay relay normally-closed contact KT1-2, a second contactor KM2, a second contactor main contact KM2-4, a third contactor KM3, a third contactor main contact KM3-4, a motor M1, a resistor R1, a resistor R2, a button SB1, a button SB2, a first contactor KM1, a first contactor auxiliary normally-open contact KM1-1, a first contactor self-locking contact KM1-3, a first contactor main contact KM1-4, a time-delay relay KT2 and a time-delay relay normally-closed contact KT2-2 which are electrically connected.
7. The automatic transmission conductor DC ice melting short circuit joint control device according to claim 1 or 5, characterized in that: the track motion system positive and negative rotation drive circuit includes: the device comprises a double-pole single-throw power switch QF2, a time-delay relay KT3, a time-delay relay normally-closed contact KT3-2, a fourth contactor KM4, a fourth contactor auxiliary normally-open contact KM4-1, a fourth contactor auxiliary normally-closed contact KM4-2, a fourth contactor self-locking contact KM4-3, a fourth contactor main contact KM4-4, a fifth contactor KM5, a fifth contactor auxiliary normally-open contact KM5-1, a fifth contactor auxiliary normally-closed contact KM5-2, a fifth contactor self-locking contact KM5-3, a fifth contactor main contact KM5-4, a fourth contactor interlocking main contact KM4-5, a fifth contactor interlocking main contact KM5-5, a sixth contactor KM6, a sixth contactor main contact KM6-4, a motor M2, a button SB3, a button SB4 and a button SB5 which are electrically connected.
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| CN202010342420.3A CN111509647B (en) | 2020-04-27 | 2020-04-27 | Automatic short circuit joint control device for direct-current deicing of transmission conductor |
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| CN202010342420.3A CN111509647B (en) | 2020-04-27 | 2020-04-27 | Automatic short circuit joint control device for direct-current deicing of transmission conductor |
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Effective date of registration: 20230817 Address after: No. 169, Changchun Road, Jilin City, Jilin Province, 132000 Patentee after: NORTHEAST DIANLI University Patentee after: LIAOYUAN POWER SUPPLY COMPANY OF STATE GRID JILINSHENG ELECTRIC POWER SUPPLY Co. Address before: 132012, Changchun Road, Jilin, Jilin, 169 Patentee before: NORTHEAST DIANLI University |