How to repair the broken motor wire, how much does it cost to repair the broken motor wire of an ele

The top and bottom are not in the same line, resulting in broken threads and broken needles. Do you see if the screws are loose?

Turn slowly and look closely. Look at the needle prick in the broken one? Generally, it is the reason that the guide rod connecting the needle is bent, the position of the guide ring of the lower line shuttle is not correct, and the position of the needle from the bottom to the bottom is too low.

Check it first easily and then hard, and first see if the needle has rubbed against the presser foot. The second is to see if the needle is in the middle of the panel eye. Third, look at the shuttle bed below to see if it is good, and it must be leveled.

Fourth, look at the needle to the bottom of the needle, to leave a space with the shuttle bed for a thread. Follow the steps above to see and troubleshoot.

Open the motor junction box, if the short point is connected to the outside of the motor, if the inside is broken, you can only turn on the motor.

**Generally more than 100 yuan. Electric vehicle motor wire broken must be replaced with a new wire, electric vehicle repair department has a new motor wire, not an ordinary wire, need to disassemble the motor from the motor internal wiring, very troublesome, ** to the repair department set a big hunger price, it is difficult to lower a hundred yuan.

Precautions: 1. The motor of the electric vehicle should be sent to the electric vehicle maintenance point for repair, or replacement, if it can be replaced free of charge during the warranty period, the common faults of the motor are usually checked from its three components, the first should check the motor body, followed by the position sensor, and finally check the drive control circuit;

2. The problem of electric vehicle controller that may occur in the motor body is poor contact of motor windings, broken wire or short circuit. It will cause the motor not to rotate, the motor can start in some positions but cannot start in some positions, the motor runs unbalanced, and the main magnetic pole of the motor is demagnetized, which will make the motor torque obviously small, and the no-load speed is high and the current is large;

3. The common problem on the position sensor is that the Hall element is damaged, the contact is poor, and the position changes, which will make the output torque of the motor smaller, and in serious cases, the motor will not move or vibrate back and forth at a certain point. The most prone to failure in drive control circuits is the power transistor, i.e. damage to the power transistor due to long-term overload, overvoltage or short circuit.

If the motor of the electric vehicle is broken, it should be sent to the electric vehicle maintenance point to be repaired, or replaced, if it can be replaced free of charge during the warranty period, the common faults of the motor are usually checked from its three components, the first should check the motor body, followed by the position sensor, and finally check the drive control circuit;

4. The problem of electric vehicle controller that may occur in the motor body is poor contact of the motor winding, broken wire or short circuit. It will cause the motor not to rotate, the motor can start in some positions but cannot start in some positions, the motor runs unbalanced, and the main magnetic pole of the motor is demagnetized, which will make the motor torque obviously small, and the no-load speed is high and the current is large;

The common problems on the position sensor are that the Hall element is damaged, the contact is poor, and the pre-spike change will make the output torque of the motor smaller, and in severe cases, the motor will not move or vibrate back and forth at a certain point. The most prone to failure in drive control circuits is the power rolling back transistor, i.e. damage to the power transistor due to long-term overload, overvoltage, or short circuit. <>

How to disassemble the inner wire of the motor: 1. Open the end cover of the motor first, pull out the rotor from the collapsed plum, and heat the stator. The methods of heating are:

High-current softening method: The high-voltage current on the low-voltage side of the voltage regulating transformer or the secondary winding of the electric welding machine is used to pass it into the stator winding of the motor to heat the winding. The size of the current should be controlled at about 300% of the rated current of the motor, so that the temperature rise of the motor winding reaches 110 and below.

When the stator windings are heated to the point where the insulation material softens, the windings can be removed while they are hot. Hot drying method: heat the stator with an electric oven, when the temperature rise reaches 110 and below, the stator winding insulation material is softened, and the winding can be removed while it is hot.

Fire method: The stator is supported by bricks or other objects, and the wood is burned so that the flame rises from the stator cavity. When the flame appears blue, reduce the fire immediately.

And remove the windings while they are hot. Although this method is simple, it has a certain degree of damage to the stator silicon steel sheet. So, master the heat.

2. Remove the winding: Remove the groove wedge with a flat iron. Then check the technical data of the stator winding and make detailed records.

After pulling out a few enameled wires by hand, the remaining coils can be pulled out when the windings in the groove are loosened. It is also possible to remove the winding coil at one end of the stator and pull out the remaining winding from the other end of the stator. Select one or several old windings that represent the exact dimensions of the stator windings to provide a specimen for determining the size of the new stator winding.

3. Clean the trunking and sort out the core. At this point, the dismantling of the stator winding of the motor is completed.

Summary. Hello, dear, I am glad to answer for you When the bridge motor wire is disconnected from the root, you can follow the steps below to repair the wiring:1

First, make sure the power is turned off to avoid the risk of electric shock. 2.Using wire strippers or wire strippers, strip a small sheath off each end of the disconnected wire to expose the wire.

3.Insulate both ends of the stripped wire with insulating tape or insulating sleeve. 4.

Cross-connect the wires of the same color at the ends of two wires, i.e., their metal wires are partially wound around each other. 5.Insulate with insulating tape or insulating sleeve to ensure that there is no short circuit between the conductors.

6.Finally, use insulating tape to secure the repaired wires. If my answer is helpful to you, please give a thumbs up (in the lower left corner), I look forward to your like, your efforts are very important to me, and your support is also the motivation for my progress.

Finally, I wish you good health and a good mood!

How to tie it firmly.

Yes!!! Hello, dear, I am glad to answer for you When the bridge motor wire is disconnected from the root, you can follow the steps below to repair the wiring:1

First, make sure the power is turned off to avoid the risk of electric shock. 2.Using wire strippers or wire strippers, strip a small sheath off each end of the disconnected wire to expose the wire.

3.Insulate both ends of the stripped wire with insulating tape or insulating sleeve. 4.

Cross-connect the wires of the same color at the ends of two wires, i.e., their metal wires are partially wound around each other. 5.Insulate with insulating tape or insulating sleeve to ensure that there is no short circuit between the conductors.

6.Finally, use insulating tape to fix the repaired wires securely. If my answer is helpful to you, please give a thumbs up (comment in the lower left corner and guess the blank), look forward to your like, your efforts are very important to me, and your support is also the driving force for my progress.

Finally, I wish you good health and a good mood!

When wiring, the following methods can be used to ensure a strong connection:1Make sure the ends of the wires are peeled clean:

Use wire strippers or wire strippers to strip the insulating outer skin at the end of the wire to expose sufficient wire length. 2.Cross-connect wires:

Cross the ends of the two wires that need to be connected so that their metal wire sections are wound around each other. 3.Tighten the wire:

Tighten the ends of the two wires together by hand or pliers. Make sure that the tightening is moderate, not too loose and not too tight. 4.

Insulate with insulating tape or insulating sleeve: Wrap the wires with insulating tape or insulating sleeves at the connections to ensure that there is no short circuit between the wires and provide good insulation protection. 5.

Pull test: lightly pull the mold potato connection with the finger code to ensure that the connection is firm and there is no sign of loosening or falling off. 6.

Perform electrical testing: Conduct electrical testing at the connection to ensure that the connection is working properly and that there are no short or open circuits.

Summary. Why does the motor outgoing line open and break will be short-circuited? Hello dear, there are three main reasons for the short circuit between the laps of the motor:

The motor overload or stalled rotor causes the motor to overheat and damage the inter-turn insulation, which may cause a short circuit. The input voltage of the motor is too high, which can cause damage to the inter-turn insulation, and may also cause a short circuit. The motor is used for too long, resulting in the aging of the inter-turn insulation, which may lead to short circuits.

In the beginning of an inter-turn short circuit, only two wires may be in contact due to the erosion of the insulation at the intersection. Due to the circulation in the short circuit turn, the coil heats up rapidly, which further damages the insulation of the adjacent wires, so that the number of turns of the short circuit continues to increase and the fault expands. Hope it helps.

Why does the motor outgoing line open and break will be short-circuited? There are three main reasons for the short circuit between the turns of the motor: the motor overload or stall rotor causes the motor to overheat and damage the insulation between the turns, which may cause the short grinding wheel to be slammed.

The input voltage of the motor is too high, which causes damage to the inter-turn insulation, and may also cause a short circuit. The motor is used for too long, resulting in the aging of the inter-turn insulation, which may lead to short circuits. In the beginning of an inter-turn short circuit, only two wires may be in contact due to the erosion of the insulation at the intersection.

If my answer is helpful to you, please give a thumbs up (comment in the lower left corner), look forward to your like, your work is very important to me, and your support is also the dynamic and vertical momentum of my progress. Finally, I wish you good health and a good mood!