Shanghai Hengzhe Agency MeiNEXEN Lisheng 965001 Brake Pads and Brakes

Shanghai Hengzhe Agency MeiNEXEN Lisheng 965001 Brake Pads and Brakes

The agent of American Nixon in China, Shanghai Hengzhe, has a long-term cooperation with this brand, with fast quotation, good price, short delivery time, and the option to choose products. The product price has a great advantage in China.

Brake holding brake, also known as motor holding brake or motor brake, refers to a device used in a motor or transmission system to maintain a braking state. Its main function is to maintain the stopped state of the motor or transmission system when it stops running, preventing it from moving or rotating.

1. Working principle:

The working principle of the brake is to fix the motor through a mechanical or electromagnetic device after it stops running, preventing the danger caused by its movement due to external forces. This device is similar to the manual brake or electronic brake gear P used after parking a car, used to maintain the stationary state of the motor after stopping.

2. Application scenarios:

The brake is mainly used in situations where it is necessary to maintain a stationary state, such as vertical mechanisms. When the motor or transmission system stops running, the brake can ensure that the equipment remains in a fixed position and prevent accidental movement.

3. Historical background and technological development:

Braking system is a traditional braking device. With the development of technology, although modern motor control technology is increasing, braking system still plays an important role in certain specific applications. Especially in situations where high safety and stability are required, the brake remains an important safety device.

The maintenance methods for pneumatic brake mainly include the following aspects:

1. Check the power indicator light:

If the power indicator light is not on, first check if the fuse is open. If the fuse is intact, then check if the power indicator light is open. If there is a problem, the indicator light needs to be replaced.

2. Replace the motor:

If the actuator is powered on and the signal can be turned on but not off, check if the feedback circuit is normal. After confirming safety, check the off indicator light. If an open circuit is found, the indicator light needs to be replaced. If the motor winding is abnormal, it may be necessary to replace the motor.

3. Clearing obstacles:

If the motor does not operate, check if the resistance of the motor winding is normal. If it is normal but the motor does not rotate, it may be due to obstacles between the rotor and the motor end cover. The obstacles need to be removed and lubricating oil needs to be added before reassembly.

4. Replace the solenoid valve:

If the valve cannot operate, check whether the solenoid valve is normal, whether the coil is burned out, and whether the valve core is stuck by dirt. If necessary, replace the solenoid valve or remove the dirt.

5. Adjust the cam position:

If there is no feedback signal or the signal pressure is unstable, check whether there is a short circuit or open circuit in the signal power circuit, readjust the cam position or replace the micro switch.

The working principle of pneumatic brake is to brake through pneumatic drag brake. Normally, the spring pulls the compression rod to tighten the brake and put the mechanism in a braking state. When operation is required, open the push electromagnetic valve, compressed air enters the brake cylinder, the piston rod rises, and the brake shoe disengages from the intermediate wheel, thereby opening the brake and allowing the mechanism to operate. When braking, the electromagnetic valve is closed, compressed air is discharged, the brake spring pulls the lever, and the driving lever presses the brake shoe towards the intermediate wheel to achieve braking.

The common faults and solutions of the brake mainly include the following:

1. Brake failure:

Reason: Short circuit of motor winding, malfunction of motor brake electromagnet, malfunction of motor brake power supply.

Solution: Check and repair the short-circuit part of the motor winding, replace the faulty electromagnet, check the power circuit and switch, and repair the fault.

2. Overheating of the brake:

Reason: Overheating of motor brake electromagnet and overload of motor brake power supply.

Solution: Check and replace the overheated electromagnet, check the load size and upgrade the power supply in a timely manner.

3. The brake noise is loud:

Reason: Motor brake solenoid malfunction, motor brake pad wear.

Solution: Replace the faulty electromagnet and replace the worn brake pads.

4. Brake switch malfunction:

Reason: switch aging, accumulation of dust and dirt, circuit malfunction, improper installation.

Solution: Replace the aging switch, clean the dust and dirt inside the switch, check and repair the circuit faults, and reinstall the brake switch correctly.

Shanghai Hengzhe Agency MeiNEXEN Lisheng 965001 Brake Pads and Brakes

The common faults and solutions of clutches are as follows:

1. Clutch slippage:

Phenomenon: The car accelerates slowly when starting, and the engine power cannot be transmitted, resulting in increased fuel consumption and difficulty in starting; The speed of the car does not increase when accelerating; The slipping phenomenon is more pronounced when overloaded uphill.

Reason: The free travel of the clutch pedal is too small, the friction plate is contaminated with oil, the clutch design is not matched properly, the connecting screws are loose, overloaded operation, and excessive use of semi linkage.

Solution: Adjust the free travel of the clutch pedal, check and remove oil stains on the friction plates, and replace severely worn friction plates or pressure plates.

2. Incomplete clutch disengagement:

Phenomenon: When the engine is idling, it is difficult to shift gears and there is a sound of gear collision; After forcibly shifting gears, the vehicle may experience sudden acceleration and the engine may stall.

Reason: Excessive free travel of clutch pedal, rusting and sticking of the keyway of the driven disc hub and the first shaft key teeth of the transmission, use of mismatched driven disc, fatigue failure of diaphragm spring, etc.

Solution: Check and adjust the free travel of the clutch pedal, check and remove rust, and replace the diaphragm spring or pressure plate if necessary.

3. The clutch starts trembling:

Phenomenon: The car experiences intermittent acceleration during start-up, accompanied by slight shaking and impact sensation.

Reasons: fatigue or breakage of clutch spring, uneven surface of clutch disc, improper installation of clutch pressure plate, etc.

Solution: Check and replace damaged springs or pressure plates, ensure that the surface of the clutch plate is flat, and install the pressure plate correctly.

4. Abnormal noise from clutch:

Phenomenon: When the clutch pedal is slightly pressed, the inner end face of the release bearing contacts the release lever, and the clutch will make continuous noise; Noise accompanied by vibration when starting, joining, or separating.

Reason: Damage to the separation bearing, loose bearing seat, poor lubrication of the bearing, etc.

Solution: Go for maintenance or replacement of damaged bearings and components.

5. The clutch master cylinder, slave cylinder, and oil pipe are damaged or leaking oil:

Phenomenon: The clutch operation is not smooth, and there may be oil leakage.

Reason: Aging of oil pipes, loose joints, damaged sealing rings, etc.

Solution: Check and replace damaged components to ensure good oil circuit sealing.

There are two main forms of brakes: disc brakes and drum brakes, which have different installation methods. ‌

1. Disc brake

Disc brakes are usually installed at the center of the wheels, and friction is generated by clamping the brake disc with brake calipers to achieve braking effect. There is a pair of metal plates (brake pads) bonded to friction material inside the brake caliper. When the brake is applied, the brake fluid transmits pressure through the hydraulic system, forcing the brake pads to clamp the brake disc and generate friction to slow down or stop the wheels.

2. Drum brake

Drum brakes are installed on the inside of the wheels and achieve braking through the friction between the brake shoes inside the brake drum and the drum wall. The structure of drum brakes is relatively closed, with poor heat dissipation and drainage performance, which can easily lead to a decrease in braking efficiency. Therefore, although drum brakes have lower costs, disc brakes are more commonly used in modern cars, especially in front wheel brakes, while drum brakes are mainly used in rear wheel and parking brakes.

A friction disc is a tool used to calculate frictional force. It is usually used for measuring and calculating the resistance, i.e. friction, generated when two objects are in contact with each other.

The working principle and application scenarios of friction discs

The working principle of a friction disc is based on the concept of frictional force in physics. When two objects come into contact with each other and undergo relative motion, friction is generated. Friction discs can measure and calculate the magnitude and properties of this frictional force through specific design and operation.

The application of friction discs in different fields

Friction discs have applications in multiple fields, such as:

Automobile clutch: The clutch friction plate can transmit engine power in a timely manner and cut off engine power in a timely manner through the separation and engagement of the clutch during gear shifting.

False twisting deformation: Friction disc false twisting device is the main component used for false twisting deformation, mainly used in textile machinery.

The difference between friction discs and other related concepts

Friction discs and grinding discs are two different concepts. Grinding disc (also known as grinding disc) is a friction element used for rotating work, mainly for processes such as grinding and pulping, such as the process equipment for the production of silicon wafers for ultra large scale integrated circuits in the semiconductor industry.

Nixon NEXEN American Lisheng commonly produces models: