Summer maintenance measures for mechanical equipment

1) On-site emergency treatment of high temperature faults

(1) "Boiling the pot" is one of the common faults caused by high temperature in construction machinery. When the water temperature is too high, do not rush to open the water radiator cover to dissipate heat, which will easily cause hot water to spray out and hurt people. It should be cooled naturally and then replenished; According to the operating experience and operating specifications of construction machinery, when the operator finds that the engine is "opening the pot", the operator should immediately stop the operation, do not turn off the engine, let the engine run at an idle speed, and at the same time fully open the shutters to increase the air flow and make the water temperature slow under the action of the cooling fan Descend slowly and release the large air bubbles produced by the cooling system.

After the engine runs at idle speed for a few minutes, when the water temperature drops and no longer boils, wrap the water radiator cap with a towel or veil, carefully unscrew a part of the water radiator cap, and release the water vapor, making sure that the water vapor in the water radiator is released. After that, unscrew all the water radiator caps. During the process of unscrewing the water radiator cap, remember not to expose your arms, and keep your face away from the top of the water inlet to prevent hot water from spraying and scalding your face.

If the engine has been turned off, start the engine quickly and let it run at idle speed; if the engine cannot be restarted after the engine is turned off, turn off the accelerator and crank the crankshaft with the hand crank; if there is no hand crank, the starter can be used intermittently to let the piston Reciprocate up and down several times, and dissipate the heat in the cylinder through the ventilation movement of suction and exhaust.

(2) When adding coolant, it is best to add the same type of coolant as in the water radiator, and do not add tap water at will, unless it is for emergency treatment. When adding cooling water to the water radiator, be sure to wait for the water temperature to drop to about 70 °C before proceeding; the "gradual water injection method" should be adopted to gradually cool down, and the water should not be added too fast or too fast at one time, that is, the engine should be idle while adding water. , while filling slowly, the water flows for a long time to ensure the safety of operators and equipment.

(3) When the brake or other parts are overheated, do not use water to cool down, which will reduce its life and performance, and cause deformation or even cracking of the parts, so it must be stopped to cool it naturally.

2) Daily maintenance points of mechanical equipment in summer

(1) Do a good job in the early maintenance of construction machinery

In the summer, it is best to do a comprehensive maintenance of construction machinery, replace the engine with three filters and oil, replace or adjust the tape, check whether the performance of fans, water pumps, generators, and compressors is reliable, and maintain and repair if necessary. or replace.

For machinery working in high temperature areas, appropriately increase the viscosity level of the oil, and check whether the cooling system and fuel system are smooth; and replace the aging wires, plugs, and hoses, check and tighten the fuel lines to prevent fuel leakage; clean the engine body. Oil stains and dust ensure that the engine is "lightly loaded" and has good heat dissipation.

(2) Do a good job of lubricating

Equipment lubrication is one of the important means to prevent the wear and failure of equipment components.

Lubrication plays an important role in mechanical transmission and equipment maintenance. Lubrication can affect equipment performance, accuracy and life. The implementation of lubrication should firstly achieve "five-level, three-stage filtration" according to the specified lubrication time, lubricating implementer, lubricating oil product, location, and quantity, and check the warehousing filtration, distribution filtration, and refueling filtration. In order to reduce friction and reduce wear, so as to ensure the normal operation of equipment.

In the high temperature season of summer, the lubrication time should be adjusted first. Compared with the spring and autumn, the time should be shortened by 0.5-1 times, and the oil quality should be observed. The temperature of fat oil is easy to change. Grease gun up to three times), if the temperature is slightly higher after refueling and then slowly falls off, it proves that the lubrication is effective, but the inside of the bearing is only due to insufficient oil, resulting in insufficient lubrication, resulting in a rise in temperature.

If the temperature does not change or only rises but does not drop after refueling, it proves that the bearing has worn out, or is seriously short of oil, or even the oil inside is dry. Therefore, for grease lubrication, adjust the lubrication time, make a lubrication plan, and drain time, due to execute.

Liquid oil mainly pays attention to oil emulsification. In the high temperature season in summer, lubricating oil runs for a long time in an environment that is more than 20 degrees higher than that in spring, autumn and winter. , so water will be generated, and then the oil will be emulsified. The emulsification of the oil will greatly reduce the viscosity and double the efficiency of the original film of the lubricated part. It is conceivable that the friction force will be doubled. Increase. Therefore, liquid oils should also make a lubrication plan, pay attention to inspection, prevent in advance, and achieve predictive maintenance.

The summer maintenance of mechanical equipment should follow the principles of being timely, reasonable and comprehensive, so as to facilitate the operation of the equipment and adapt to the outside temperature and working conditions. It is necessary to track and manage the equipment, master the performance dynamics of the equipment, and formulate a maintenance plan that combines pertinence and versatility.