195-21-32521BUSHING
Introduction to bulldozer linerBulldozer bushings are key components in the transmission, walking, and working devices of bulldozers. They belong to a type of sliding bearing and are usually made of metal materials (such as steel, copper alloys, etc.) or composite materials. They are cylindrical in shape and are fitted around shaft components to reduce friction, bear loads, and provide positioning and guidance.Its core function is to reduce mechanical wear during movement by relative sliding between itself and the shaft, while absorbing vibration and impact, ensuring the stable operation of various components of the bulldozer (such as the shovel, track, transmission shaft, etc.). The design of the lining needs to select suitable materials and sizes based on specific working conditions (such as load size, speed, ambient temperature, etc.) to balance wear resistance, lubricity, and service life. The function and structural characteristics of bulldozer liningThe bushing is a key component in the walking system and transmission parts of bulldozers, mainly used to reduce friction between mechanical components, absorb vibration, and improve the stability of connecting parts. Its structure is usually a cylindrical metal sleeve, with the inner wall tightly fitting with the shaft parts and the outer wall embedded with corresponding installation holes. Long term reliable operation is achieved through material hardness and lubrication design.The latest development of the lining installation fixture patent by Jining Haitui Heavy Industry (authorized announcement number CN222886037U) shows that the fixture can effectively solve the problem of lining sinking in traditional installation through the combination structure of cross support rods and push rods. Among them, the edge of the cross support rod is designed as a circular arc to fit the inner ring of the liner, and the center is vertically connected to the push rod. The liner is pushed into the installation hole by tapping the push rod, and the concave part can be smoothed out by rotating the push rod, significantly improving the installation accuracy
The bulldozer blade is driven to lift or tilt by a hydraulic cylinder, and a bushing needs to be installed at the connecting pin shaft to reduce friction between the pin shaft and the blade ear plate, ensuring flexible blade movement and bearing the huge load during soil excavation.
The connection between the tooth tip of the soil loosening device and the bracket also needs to be lined to avoid component wear caused by hard soil or stone impact during soil loosening operations.
The pin shafts between the track links are connected by bushings, which need to withstand the pressure and friction when the track comes into contact with the ground, while ensuring the flexible rotation of the links to avoid track jamming or breakage.
The meshing parts between the drive wheel and the track, as well as the shaft sleeve of the guide wheel, also require bushings to reduce wear and extend the service life of the walking system.
The connecting parts of transmission components such as transmission shafts and universal joints, with bushings, can reduce frictional resistance during rotation and ensure efficient power transmission.
At the active joints such as the pull rod and rocker arm of the steering mechanism, bushings can reduce wear during the steering process, ensuring precise and reliable steering.
The connection between the piston rod and cylinder barrel of the hydraulic cylinder, the fitting between the cylinder ear ring and the pin shaft, and the liner can prevent scratches caused by direct metal contact, while assisting in sealing to prevent hydraulic oil leakage. Application scenarios and technical requirements for bulldozer liners
834M
732M
90M
236M
תגיות פופולריות: 195-21-32521bushing, China 195-21-32521bushing manufacturers, suppliers, factory
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