CN116237614B - Welding device and welding method for vacuum circuit breaker main shaft - Google Patents

Welding device and welding method for vacuum circuit breaker main shaft Download PDF

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Publication number
CN116237614B
CN116237614B CN202211099236.6A CN202211099236A CN116237614B CN 116237614 B CN116237614 B CN 116237614B CN 202211099236 A CN202211099236 A CN 202211099236A CN 116237614 B CN116237614 B CN 116237614B
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China
Prior art keywords
welding
main shaft
positioning
crank arm
shaft
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CN116237614A (en
Inventor
霍家鹏
秦成伟
邱厚铭
林卫东
荣玉奇
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Shandong Taikai Vacuum Switch Co ltd
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Shandong Taikai Vacuum Switch Co ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00Arc welding or cutting
    • B23K9/0026Arc welding or cutting specially adapted for particular articles or work
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00Arc welding or cutting
    • B23K9/32Accessories
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)

Abstract

The invention relates to a welding device and a welding method for a main shaft of a vacuum circuit breaker, which are combined by adopting structures such as a motor, the main shaft, a guide shaft, a positioning shaft, a clamp, a welding gun, a steering ring and the like. The general worker is responsible for the disassembly and assembly during the main shaft welding, and performs auxiliary work. The two workers are matched, and the device is used, so that the labor efficiency is improved, and the welding quality is ensured; the welding device not only can realize the purpose of automation and reduce the requirement on the skill level of welding workers, but also greatly improves the welding quality.

Description

Welding device and welding method for vacuum circuit breaker main shaft
Technical Field
The invention relates to the technical field of welding equipment, in particular to a welding device and a welding method for a main shaft of a vacuum circuit breaker.
Background
The transmission main shaft used on the indoor high-voltage vacuum circuit breaker is a critical component in the circuit breaker product, the consumption is large, the product requirement stability is high, the effect of energy transfer is achieved in the switching-on and switching-off process of the circuit breaker, in particular, the spring mechanism drives the main shaft to rotate, the crank arm on the main shaft is connected with a load, so that the crank arm is stressed greatly, the torsion force born by the welding part of the crank arm and the main shaft is large, and the requirement on welding quality is high. Meanwhile, in order to meet mass production, welding efficiency must be improved so as to meet the construction period of product assembly.
Since the welding quality directly relates to the overall quality of the product, a welder is generally required to have certain professional skills and good welding experience, the traditional main shaft welding is completely dependent on the proficiency and technical level of the welder, and the quality of the welding seam directly depends on the proficiency and experience of the welder. Under the condition that the existing products are manufactured in batches and are difficult to use, the technology of welding workers is uneven, especially novice workers do not necessarily meet the requirement of enterprise use, restriction exists, and the rapid development of enterprises is not facilitated.
Disclosure of Invention
In order to solve the technical problems, the invention provides a welding device and a welding method for a main shaft of a vacuum circuit breaker, wherein the technical scheme is as follows:
the device comprises channel steel and frames, wherein the frames are respectively fixed at two sides of the channel steel, a guide shaft and a positioning shaft are arranged between the two frames, and the guide shaft and the positioning shaft are mutually parallel and are arranged on the same plane;
a motor is fixedly arranged on the frame at one side, the extending end of the motor is rotationally connected with the main shaft through a three-jaw chuck and rotates along with the rotation of the motor, and the other end of the main shaft is arranged on the supporting plate; sleeving a plurality of crank arm groups to be welded on the main shaft, wherein each crank arm group consists of a crank arm I and a crank arm II;
the steering mechanism comprises a steering shaft, a steering knuckle, a clamp, a positioning crank arm and a welding gun, wherein the steering knuckle consists of an upper positioning ring, a lower positioning ring, a connecting pin and a baffle plate; one end of the clamp is fixed with the lower locating ring, the other end of the clamp is fixed with the welding gun, and the welding nozzle is contacted with the welding part of one of the crank arms.
Further, the motor is fixed on the frame through the mounting frame II, the three-jaw chuck is fixed on the frame, the extending end of the motor is fixedly connected with the three-jaw chuck, and the other end of the three-jaw chuck is fixedly connected with the main shaft; still install mounting bracket I on this frame, be equipped with speed regulator, time delay relay, air switch and intermediate relay on the mounting bracket I, air switch and carbon dioxide arc welding machine are connected with the power electricity respectively, the knob is established ties with intermediate relay, intermediate relay is connected with time delay relay and the supplementary some electricity of carbon dioxide arc welding machine, time delay relay is parallelly connected with air switch, time delay relay is connected with the supplementary some electricity of speed regulator, the speed regulator is connected with the motor electricity, the control motor opens and stops.
Further, when the positioning crank arm is clamped on the positioning shaft, the positioning plate is welded on the positioning shaft to play a role in positioning.
Further, the bottom of the connecting pin is provided with an integrally formed cylinder table; the periphery of the lower positioning ring is provided with a square clamping groove, the cylindrical table is arranged in the square clamping groove, the two sides of the upper edge of the cylindrical table are respectively provided with a platform, and the platforms are fixedly clamped with the square clamping groove; baffle plates are respectively fixed at the front and the rear of the square clamping groove to prevent the cylindrical table from separating.
Further, the lower positioning ring is lifted upwards, the platform is separated from the square clamping groove, and the lower positioning ring is rotated to realize rotation; after the rotation is completed, the positioning ring is pulled down, and the platform is fixedly clamped with the square clamping groove.
Further, the upper positioning ring body is also provided with a bolt mounting hole.
Further, by using the welding method of the welding device,
step 1, preparation work
According to the actual main shaft size to be welded, the position of the positioning sheet is calculated in advance; then welding the locating piece on the locating shaft; the main shaft and the crank arms to be welded are arranged on the device, when the main shaft is welded, the positioning crank arms are directly clamped on the left side of one of the positioning sheets of the positioning shaft, and the welding gun welding nozzle is directly butted at the welding position of the main shaft and one of the crank arms;
the air switch and the carbon dioxide environment-friendly welding machine are respectively and electrically connected with a power supply;
step 2, electrifying
Closing the air switch, closing the knob, and enabling the circuit to enter a working state;
step 3, striking arc and main shaft rotation
The intermediate relay is electrified to enable the auxiliary point I and the auxiliary point III to be electrified; after the auxiliary point III is electrified, the welding machine is immediately electrified to start arc striking; the auxiliary point I is electrified, the delay relay is electrified, the auxiliary point II is closed after the delay relay delays for a period of time, so that the speed regulator is electrified as soon as the air switch is electrified, and the motor starts to rotate to drive the main shaft to rotate;
step 4, welding
Step 3, welding the crank arm I, and powering off after the welding of the crank arm I is finished; rotating the steering joint, and rotating the welding gun and the clamp for 180 degrees; lifting the joint of the positioning crank arm, moving the welding gun to clamp the positioning crank arm on the right side surface of the other positioning sheet, and pulling down the positioning ring to fix the steering knot, wherein the welding nozzle is directly butted at the welding position of the main shaft and the other crank arm; electrifying, rotating a main shaft, and welding the other crank arm;
step 5, welding is finished
And (4) repeating the step, after all the crank arm groups on the main shaft are welded, turning off the knob, taking down the main shaft, and performing the next circulation process.
Further, the delay time of the step 3 is 0.5-1 s.
The beneficial effects of the invention are as follows: the invention relates to a welding device and a welding method for a main shaft of a vacuum circuit breaker, which are combined by adopting structures such as a motor, the main shaft, a guide shaft, a positioning shaft, a clamp, a welding gun, a steering ring and the like. The general worker is responsible for the disassembly and assembly during the main shaft welding, and performs auxiliary work. The two workers are matched, and the device is used, so that the labor efficiency is improved, and the welding quality is ensured; the welding device not only can realize the purpose of automation and reduce the requirement on the skill level of welding workers, but also greatly improves the welding quality.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a front view of FIG. 1;
FIG. 3 is a side view of FIG. 2;
FIG. 4 is a top view of FIG. 2;
FIG. 5 is a schematic view of a steering knuckle structure according to the present invention;
FIG. 6 is a schematic diagram of a circuit connection according to the present invention;
FIG. 7 is a schematic view of steering knuckle rotation;
FIG. 8 is a schematic diagram of a welding gun rotation process;
as shown in the figure, the device comprises a channel steel 1, a supporting plate 2, a frame 3, a main shaft 4, a positioning crank arm 5, a guide shaft 6, a positioning sheet 7, a positioning shaft 8, a speed regulator 9, a mounting frame I, a delay relay 11, a middle relay 12, an air switch 13, a motor 14, a knob 15, a mounting frame II, a three-jaw chuck 17, a crank arm II, a crank arm I19, a welding gun 20, a steering knot 22, a clamp 23, a platform 24, a lower positioning ring 25, a baffle 26, a connecting pin 27, a cylinder platform 28, an auxiliary point II29, an auxiliary point III 30, a bolt hole 31, a square clamping groove 32, a baffle mounting plate 33 and an auxiliary point I34.
Detailed Description
As shown in the figure, the invention relates to a welding device and a welding method for a main shaft of a vacuum circuit breaker, and the invention patent is developed in order to uniformly weld a welding seam between the main shaft and a crank arm on the main shaft when welding, and a general worker and a skilled worker can mutually cooperate to operate.
The device comprises four channel steels 1 and a frame 3, wherein the four channel steels are arranged at the bottom of the device, the four channel steels are welded vertically, and the inner edge of the four channel steels is rectangular when seen from top to bottom.
The two sides of the channel steel are respectively and vertically welded and fixed with the frames, the two frames are mutually parallel, the guide shaft 6 and the positioning shaft 8 are arranged between the two frames, the guide shaft and the positioning shaft are mutually parallel, the guide shaft and the positioning shaft are arranged on the same plane, and the guide shaft is arranged in front of the positioning shaft when the guide shaft is seen from front to back (as shown in fig. 2). The two ends of the guide shaft and the positioning shaft are respectively provided with threads, and the guide shaft and the positioning shaft are fixed on the frame by matching nuts after penetrating through holes on the frame.
The support plate 2 is vertically arranged between the two frames, the bottom of the support plate is contacted with the inner edge of the channel steel and can slide along the length direction of the channel steel so as to weld the main shafts 4 with different lengths; the main shaft is connected with the supporting plate by the brass plate, the brass plate is wear-resistant and has small friction resistance, a round hole is arranged in the middle and matched with the outer diameter of the main shaft, and the brass plate is fixed on the supporting plate by 3 screws. Due to the clamping effect of the three-jaw chuck, the main shaft and the brass plate do not need to be limited and fixed. The supporting plate has a certain thickness, the contact area with the channel steel is large, and meanwhile, due to the fact that the weight is heavy, the supporting plate cannot slide due to the rotation of the main shaft. ( And (3) injection: in actual operation, the bottom of the supporting plate can be welded with two flat plates to be contacted with the channel steel so as to increase the stability )
The motor 14 is fixedly installed on the outer side of the right side frame through the installation frame II16, the three-jaw chuck 17 is also installed on the right side frame, one end of the main shaft is fixed on the three-jaw chuck, and the other end of the main shaft is installed in a main shaft installation hole of the supporting plate. The main shaft, the main shaft mounting hole of the supporting plate, the shaft hole of the three-jaw chuck and the motor extending end are all arranged on the same straight line. The front end of the three-jaw chuck is fixedly connected with the main shaft, the rear end of the three-jaw chuck is fixedly connected with the extending end of the motor, and the motor rotates to drive the three-jaw chuck to rotate, so that the main shaft is driven to rotate.
The main shaft is sleeved with a plurality of groups of crank arm groups, and each group of crank arm groups consists of crank arms I19 and crank arms II 18. The steering shaft is sleeved with a steering knot 21 and a positioning crank arm 5, the steering knot consists of an upper positioning ring, a lower positioning ring, a connecting pin 27 and a baffle 26, and the upper positioning ring is connected with the lower positioning ring through the connecting pin; the upper positioning ring body is also provided with a bolt hole 31, and the bolt can be installed in the hole and fastened on the guide shaft to prevent the upper positioning ring from rotating. The upper locating ring is sleeved on the guide shaft, and the side surfaces of the sleeved locating crank arms, which are contacted with the upper locating ring, are mutually fixed through welding and can slide along the guide shaft at the same time. The other end of the positioning crank arm is provided with an arc notch which is fixedly clamped with the positioning shaft. According to the actual main shaft size to be welded, the position of the positioning sheet is calculated in advance; and then the locating piece 7 is welded on the locating shaft to play a locating role.
The upper positioning ring is connected with the lower positioning ring through a connecting pin 27, and a common general V-shaped clamp on the market is selected as a clamp, the model is Shanghai Li Hong, and a cross rod 180 mm+V-shaped clamp is adopted; one end of the clamp 22 is fixed with the lower locating ring, the other end of the clamp is fixed with the welding gun 4, and a welding nozzle at the end of the welding gun is contacted with the welding part of one of the crank arms.
The right side frame is also provided with a mounting rack I and a mounting rack II, and the mounting rack I and the mounting rack II are respectively fixed on the right side frame through fixing bolts. Be equipped with speed regulator 9, time delay relay 11, air switch 13 and intermediate relay 12 on the mounting bracket I, air switch and carbon dioxide arc welding machine are connected with the power electricity respectively, knob 15 is established ties with intermediate relay, intermediate relay is connected with time delay relay auxiliary point I34 and carbon dioxide arc welding machine auxiliary point II30 electricity respectively, time delay relay is parallelly connected with air switch, time delay relay is connected with speed regulator auxiliary point II29 electricity, the speed regulator is connected with the motor electricity, control motor opens and stops.
The bottom of the connecting pin is provided with an integrally formed cylindrical table 28; the periphery of the lower positioning ring is provided with a square clamping groove 32, the cylinder platform is arranged in the square clamping groove, the two sides of the upper edge of the cylinder platform are respectively provided with a platform 23, and the platforms are fixedly clamped with the square clamping groove; the baffle 26 is fixed at the front and rear of the square clamping groove respectively, and the baffle is fixed at the baffle mounting hole 33 through bolts to prevent the cylindrical table from separating. When the lower positioning ring is lifted upwards, the platform is separated from the square clamping groove, and the lower positioning ring is rotated to realize rotation; after rotating 180 degrees, the positioning ring is pulled down, and the platform is clamped and fixed with the square clamping groove, so that the purpose of changing the welding position of the welding gun is realized.
For example:
welding the crank arm I19 (left): the welding gun 4 and the positioning crank arm 5 form a whole through the clamp 22, the clamp can slide and rotate left and right on the guide shaft 6, and the positioning crank arm 5 can be clamped on the positioning shaft 8 and can be contacted with the left side surface of the positioning sheet 7 to realize positioning. While positioning, the welding nozzle of the welding gun just contacts the welding part of the main shaft 4 and the crank arm I (left), and when the welding gun is started, the welding can be realized. At the same time, the motor 14 drives the spindle 4 to rotate, and finally circumferential welding of the spindle and the crank arm I (left) is realized.
Welding lever II18 (right): when the welding of the crank arm I (left) on the main shaft is completed, the welding gun is held by hand to rotate 180 degrees (the rotation of 180 degrees is realized by a steering knot 21 on the clamp, the specific principle is shown in fig. 7), and meanwhile, the clamp is driven to move right on the guide shaft and rotate from inside to outside, so that the positioning crank arm 5 is separated from the positioning shaft 8, and the clamp simultaneously drives the positioning crank arm to move right. After the welding gun reaches the right side surface of the other locating piece, the clamp rotates from outside to inside, so that the locating crank arm is clamped on the locating shaft again, the locating crank arm is in contact with the right side surface of the other locating piece (shown in fig. 8), and the welding nozzle of the welding gun is just positioned to the position of the main shaft and the crank arm II (right), so that the right side welding is realized.
By means of the welding method of the welding device,
step 1, preparation work
According to the actual main shaft size to be welded, the position of the positioning sheet is calculated in advance; then welding the locating piece on the locating shaft; the main shaft and the crank arms to be welded are arranged on the device, when the main shaft is welded, the positioning crank arms are directly clamped on the left side of one of the positioning sheets of the positioning shaft, and the welding gun welding nozzle is directly butted at the welding position of the main shaft and one of the crank arms;
the air switch and the carbon dioxide environment-friendly welding machine are respectively and electrically connected with a power supply;
step 2, electrifying
Closing the air switch, closing the knob, and enabling the circuit to enter a working state;
step 3, striking arc and main shaft rotation
The intermediate relay is electrified to enable the auxiliary point I and the auxiliary point III to be electrified; after the auxiliary point III is electrified, the welding machine is immediately electrified to start arc striking; the auxiliary point I is electrified, the delay relay is electrified, the auxiliary point II is closed after the delay relay delays for a period of time, so that the speed regulator is electrified as soon as the air switch is electrified, and the motor starts to rotate to drive the main shaft to rotate; the circuit aims to make welding obtain electric arc striking firstly and then make the main shaft rotate.
Step 4, welding
Step 3, welding the crank arm I, and powering off after the welding of the crank arm I is finished; rotating the steering joint, and rotating the welding gun and the clamp for 180 degrees; lifting the joint of the positioning crank arm, moving the welding gun to clamp the positioning crank arm on the right side surface of the other positioning sheet, and pulling down the positioning ring to fix the steering knot, wherein the welding nozzle is directly butted at the welding position of the main shaft and the other crank arm; electrifying, rotating a main shaft, and welding the other crank arm;
step 5, welding is finished
And (4) repeating the step, after all the crank arm groups on the main shaft are welded, turning off the knob, taking down the main shaft, and performing the next circulation process.
As shown in fig. 6, the air switch and two sides of the welder are connected with power supply to wait for use. When the welding is ready, the air switch (the main power supply of the control circuit) is closed, the knob is closed, and the circuit is put into operation. The intermediate relay is powered on instantly, so that an auxiliary point I and an auxiliary point III in the circuit are closed, and the two sides of the welding machine are powered on immediately to work, so that the welding gun starts to strike an arc. Meanwhile, after the air switch is closed to be electrified, the delay relay 11 is started to work, and after the delay time (0.5-1S) is reached, the delay relay starts to be closed at the auxiliary point II, so that the speed regulator is electrified (the speed regulator and the motor are controlled by an internal loop, the motor works to drive the main shaft to rotate at the moment that the speed regulator is electrified) instantly, and the welding is in a normal state.
The welding machine used in the invention has the following model: FED-J01 (tin-free han god electric); knob model: LA135-11X2/20A6; delay relay type number: JS14A AC220V; intermediate relay number: JZC1-44 AC220V; air switch model: TKBB 1-63 C6/2P; motor model: 5GN-100K.
The intermediate relay is used for simultaneously starting control and a welding machine loop; the function of the delay relay is to keep enough arc striking time, and the motor side can rotate after arc striking; the speed regulator is used for controlling the motor to reach proper rotation speed so that the welding gun can weld smooth and reasonable welding seams on the workpiece. After the main shaft and the crank arm are welded circumferentially by 360 degrees, a general worker is responsible for disconnecting the knob, taking down the main shaft and entering the next circulation process. The spindles with the same size can realize batch production, and the welding quality is greatly improved. The same purpose and effect can be achieved by determining the position of the locating piece and then welding the locating piece according to different main shaft sizes.
The invention relates to a welding device with reasonable design, which realizes the purpose of automatic welding; reducing the skill level of the welding workers, and finishing the welding by the device; the labor efficiency is improved, and the weld quality is ensured.
While the foregoing is directed to the preferred embodiments of the present invention, it should be noted that modifications and additions may be made to the present invention by those skilled in the art without departing from the principles of the present invention, which modifications and additions are also considered to be protected by the present invention.

Claims (6)

1. The welding device for the main shaft of the vacuum circuit breaker comprises channel steel and frames and is characterized in that the frames are respectively fixed on two sides of the channel steel, a guide shaft and a positioning shaft are arranged between the two frames, and the guide shaft and the positioning shaft are mutually parallel and are arranged on the same plane;
a motor is fixedly arranged on the frame at one side, the extending end of the motor is rotationally connected with the main shaft through a three-jaw chuck and rotates along with the rotation of the motor, and the other end of the main shaft is arranged on the supporting plate; sleeving a plurality of crank arm groups to be welded on the main shaft, wherein each crank arm group consists of a crank arm I and a crank arm II;
the steering mechanism comprises a steering shaft, a steering knuckle, a clamp, a positioning crank arm and a welding gun, wherein the steering knuckle consists of an upper positioning ring, a lower positioning ring, a connecting pin and a baffle plate; one end of the clamp is fixed with the lower positioning ring, the other end of the clamp is fixed with the welding gun, and the welding nozzle is contacted with the welding part of one of the crank arms;
the bottom of the connecting pin is provided with an integrally formed cylinder table; the periphery of the lower positioning ring is provided with a square clamping groove, the cylindrical table is arranged in the square clamping groove, the two sides of the upper edge of the cylindrical table are respectively provided with a platform, and the platforms are fixedly clamped with the square clamping groove; the baffle plates are respectively fixed at the front and the rear of the square clamping groove to prevent the cylindrical table from separating;
the lower positioning ring is lifted upwards, the platform is separated from the square clamping groove, and the lower positioning ring is rotated to realize rotation; after the rotation is completed, the positioning ring is pulled down, and the platform is fixedly clamped with the square clamping groove.
2. The welding device for a main shaft of a vacuum circuit breaker according to claim 1, wherein the motor is fixed on the frame through a mounting frame II, the three-jaw chuck is fixed on the frame, the protruding end of the motor is fixedly connected with the three-jaw chuck, and the other end of the three-jaw chuck is fixedly connected with the main shaft; still install mounting bracket I on this frame, be equipped with speed regulator, time delay relay, air switch and intermediate relay on the mounting bracket I, air switch and carbon dioxide arc welding machine are connected with the power electricity respectively, the knob is established ties with intermediate relay, intermediate relay is connected with time delay relay and the supplementary some electricity of carbon dioxide arc welding machine, time delay relay is parallelly connected with air switch, time delay relay is connected with the supplementary some electricity of speed regulator, the speed regulator is connected with the motor electricity, the control motor opens and stops.
3. The welding device for a main shaft of a vacuum circuit breaker according to claim 1, wherein the positioning plate is welded on the positioning shaft to perform a positioning function when the positioning crank arm is caught on the positioning shaft.
4. The welding device for a main shaft of a vacuum circuit breaker according to claim 1, wherein a bolt mounting hole is further provided on the upper positioning ring body.
5. A welding method using a welding apparatus for a vacuum interrupter spindle as defined in claim 2, wherein,
step 1, preparation work
According to the actual main shaft size to be welded, the position of the positioning sheet is calculated in advance; then welding the locating piece on the locating shaft; the main shaft and the crank arms to be welded are arranged on the device, when the main shaft is welded, the positioning crank arms are directly clamped on the left side of one of the positioning sheets of the positioning shaft, and the welding gun welding nozzle is directly butted at the welding position of the main shaft and one of the crank arms;
the air switch and the carbon dioxide environment-friendly welding machine are respectively and electrically connected with a power supply;
step 2, electrifying
Closing the air switch, closing the knob, and enabling the circuit to enter a working state;
step 3, striking arc and main shaft rotation
The intermediate relay is electrified to enable the auxiliary point I and the auxiliary point III to be electrified; after the auxiliary point III is electrified, the welding machine is immediately electrified to start arc striking; the auxiliary point I is electrified, the delay relay is electrified, the auxiliary point II is closed after the delay relay delays for a period of time, so that the speed regulator is electrified as soon as the air switch is electrified, and the motor starts to rotate to drive the main shaft to rotate;
step 4, welding
Step 3, welding the crank arm I, and powering off after the welding of the crank arm I is finished; rotating the steering joint, and rotating the welding gun and the clamp for 180 degrees; lifting the joint of the positioning crank arm, moving the welding gun to clamp the positioning crank arm on the right side surface of the other positioning sheet, and pulling down the positioning ring to fix the steering knot, wherein the welding nozzle is directly butted at the welding position of the main shaft and the other crank arm; electrifying, rotating a main shaft, and welding the other crank arm;
step 5, welding is finished
And (4) repeating the step, after all the crank arm groups on the main shaft are welded, turning off the knob, taking down the main shaft, and performing the next circulation process.
6. The welding method of the welding device for the main shaft of the vacuum circuit breaker according to claim 5, wherein the delay time of the step 3 is 0.5-1 s.
CN202211099236.6A 2022-09-08 2022-09-08 Welding device and welding method for vacuum circuit breaker main shaft Active CN116237614B (en)

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CN208341961U (en) * 2018-05-09 2019-01-08 济南双力升降机械有限公司 A kind of pin shaft applies automatic soldering device
CN212443906U (en) * 2020-05-19 2021-02-02 许昌郎科电气有限公司 Rotating shaft welding tool

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