As a representative of heavy construction machinery, the performance and life span of excavators directly affect the efficiency and cost of construction operations. Among the many parts of the excavator, the bushing, as an important mechanical accessory, plays an indispensable role. This article will analyze the function, material, application and maintenance of bushings in detail.
1. Function of excavator bushing
The excavator bushing is mainly installed inside the engine cylinder block, the big arm guide rod and other mechanical transmission link parts, and its main function include:
1. Protection: as one of the core components of the excavator engine, the main function of the cylinder liner is to protect the cylinder block from wear and tear, and at the same time, it serves as a track for the reciprocating motion of the piston. In the mechanical transmission connection parts, bushings play a role in protecting the shaft and holes, reducing the wear caused by friction.
2. sealing effect: in the field of valve applications, the liner is installed in the valve cover sleeve stem, in order to reduce the valve leakage, to achieve the sealing effect, the cylinder liner and the sealing ring between the piston also plays an important role in preventing the leakage of oil and fuel.
3. reduce vibration and noise: the use of bushing can reduce the vibration and noise of the equipment, improve the smoothness of equipment operation.
4. economy and convenience: the bushing are easy and low-cost to replace after damage, which help to simplify the structure and manufacturing process of the machinery and equipment and improve the economy.
2. Materials of excavator bushings
Excavator bushings are made of a variety of materials, including wear-resistant and heat-resistant alloy steel, brass, bronze, rubber, nylon, and non-metallic polymers. These materials are characterized by relatively soft texture, low price and cost, and good wear resistance. For example, cylinder liners are usually made of wear-resistance and heat-resistant alloys, and after precision machining, their inner walls form a close sliding fit with the piston rings to ensure efficient and smooth operation of the engine.
3. Application of excavator bushing
Excavator bushings are widely used in many parts of excavators, including but not limited to:
1. cylinder bushings: installed inside the cylinder block of the engine, they are the tracks for the reciprocating motion of the piston and protect th cylinder block from wear and tear.
2. Big arm guide rod bushings: used for the guide rod of the big arm of the excavator, to improve the guiding accuracy and reduce wear and tear.
3. Mechanical transmission connection parts: such as pulleys, sprockets, gears, propellers and other connecting parts of the bushing, play a role in transmitting torque, reduce wear and tear.
4. Maintenance and care of excavator bushings
In order to protect the good performance of excavator bushing, regular maintenance and servicing is essential. This includes:
1. regular oil changes: to ensure cleanliness inside the engine, and to reduce oil corrosion on the bushings.
2. clean the oil filter: to prevent impurities from entering the engine interior and causing wear and tear on the bushings.
3. check the coolant level: to prevent thermal expansion and wear caused by overheating
4. regularly check the wear of the bushings: find serious wear should be replaced in time to avoid affecting the performance of the equipment
5. keep the equipment clean: clean the surface of the equipment regularly to prevent oil and dust from causing wear and corrosion on the bushings.
As an important part of the excavator, the performance and life of the excavator
bushings are directly related to the operating efficiency and cost of the entire excavator. By understanding the function, material, application, and maintenance and repair of the bushings, we can better protect the normal operation of the excavator, extend the service life of the equipment, and improve the efficiency and quality of engineering operations.
Post time: Jul-25-2024