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1. Composition and working principle of the brake system
The brake system of an electric pallet truck usually consists of components such as a brake pedal, a brake connecting rod, a brake pump, a brake oil pipe, a brake pad and a brake disc. When the brake pedal is pressed, the brake pump is pushed through the connecting rod mechanism, so that the brake oil generates pressure in the oil pipe, and the pressure is transmitted to the brake pad, so that the brake pad contacts the brake disc to generate friction, thereby achieving braking.
2. Troubleshooting steps
1. Check the brake pedal
First, check whether the travel of the brake pedal is normal. If the pedal travel is too large, it may mean that there is a problem with the brake system. Observe whether the pedal has signs of looseness, stagnation or excessive wear. At the same time, check whether the pedal returns smoothly. If the pedal cannot return quickly, it may be due to spring failure or connecting rod jamming.
2. Check the brake fluid
Check whether the brake fluid level is within the normal range. Too low a level may cause insufficient brake pressure. Check whether the brake fluid is deteriorated, contaminated or has bubbles. Deteriorated brake fluid will reduce its performance and affect the braking effect. If a problem with the brake fluid is found, it should be replaced in time.
3. Check the brake hose
Carefully check the brake hose for damage, oil leakage, or bending. Damage to the hose can cause brake oil leakage, which can reduce brake pressure. Bent and deformed hoses may hinder the flow of brake oil and affect braking performance.
4. Check the brake pump
Check whether the brake pump is working properly. This can be determined by observing whether the piston of the brake pump moves smoothly and whether there is oil leakage. If the brake pump fails, it may need to be replaced or repaired.
5. Check the brake pads and brake discs
Check the degree of wear of the brake pads. If the brake pads are worn too much, it will lead to poor braking effect. At the same time, check the brake discs for wear, deformation or cracks. Unevenly worn brake discs may affect the stability and effect of braking.
6. Check the brake linkage and mechanical parts
Check whether the brake linkage and other mechanical parts are loose, deformed or damaged. Any failure of mechanical parts may affect the normal operation of the brake system.
7. Test the braking performance
Perform the braking performance test in a safe environment. You can drive at a certain speed, then step on the brake pedal lightly and heavily to feel the response and braking force of the brake. If the braking distance is too long or the vehicle deviates during braking, it indicates that there is a problem with the brake system.
3. Analysis of possible causes
1. Brake oil problem
The brake oil has not been replaced for a long time, resulting in performance degradation and inability to effectively transmit pressure.
Water mixed in the brake oil reduces the boiling point, and it is easy to produce bubbles at high temperatures, affecting the braking effect.
2. Wear of brake pads and brake discs
Frequent use or improper use causes excessive wear of brake pads and brake discs, reduced contact surface, and reduced friction.
The brake pad material is poor, wears too quickly, or the surface of the brake disc is rusty and oily, affecting the braking effect.
3. Failure of brake system components
The internal seal of the brake pump is damaged, resulting in brake oil leakage and insufficient pressure.
The pin of the brake connecting rod is worn, making the connecting rod inflexible and affecting the application of the brake.
4. Improper adjustment
The gap between the brake pad and the brake disc is too large and needs to be adjusted.
The free travel of the brake system is not set correctly, affecting the timeliness of braking.
5. Environmental factors
In harsh working environments, such as dusty, humid or high temperature environments, the components of the brake system are easily corroded and damaged, affecting the braking performance.
4.Solutions
1. Replace the brake fluid
Regularly replace the appropriate type of brake fluid according to the vehicle's manual and manufacturer's recommendations.
2. Replace the brake pads and brake discs
When the brake pads and brake discs are worn to a certain extent, replace them with new parts in time, and ensure that they are installed correctly and the clearance is adjusted.
3. Repair or replace faulty parts
For damaged brake pumps, brake connecting rods and other parts, repair or replace them.
4. Correctly adjust the brake system
Adjust the gap between the brake pads and the brake disc, the length of the brake connecting rod and the free travel parameters according to the manufacturer's specifications and requirements.
5. Improve the working environment
Try to avoid the electric pallet truck working for a long time in harsh environments, and clean and maintain the brake system regularly.
For the problem of failure of the brake system of the electric pallet truck or poor braking effect, it is necessary to carefully investigate, find out the specific reasons, and take corresponding solutions. At the same time, regular maintenance and maintenance of the brake system can effectively prevent the occurrence of such problems and ensure the safe operation of the vehicle.
