Vibratory rollers offer the following advantages:
2023-01-12 14:58
1. Compared with static‑type vibratory rollers, under identical quality conditions, vibratory rollers generally deliver superior compaction results, achieving higher final density and greater reliability.
2. Under the same specified compaction degree, the number of tamping passes is fewer than that of a statically‑driven vibratory roller.
3. Thanks to the use of L‑band densimeters in vibratory rollers, operators can promptly identify weak spots on the construction pavement and implement corrective measures at any time, thereby significantly reducing quality risks.
Prevention of Oil Leakage in Vibratory Rollers
During the operation of the vibratory roller, the vibration shaft and the vibrating rolling bearings are continuously subjected to cyclically varying vibrational loads. Because the vibration shaft rotates at high speed, a lubricant is required. Typically, the grease in the vibration chamber is impacted by the eccentric weights, and the oil is agitated to create splash lubrication, which can cause the grease to leak from both sides of the vibration shaft. The vibratory drum generally adopts a nested cylindrical structure, with the inner cylinder serving as the grease reservoir; grease can be replenished through internal fittings, and oil traces on both sides indicate the grease level. The two ends of the vibratory drum are fixed to T‑shaped steel brackets, while the outer end is connected to a rotary cover equipped with a skeletal seal. The eccentric weights rotate together with the vibration shaft, stirring the oil in the vibration chamber and generating splash lubrication. Key factors contributing to leakage in the vibration chamber include: the design and manufacturing quality of critical components, improper selection of skeletal seals, assembly errors, reduced lubricant viscosity due to evaporation, and the presence of foreign matter or accumulated high‑temperature food residues during operation. Control measures involve improving the structural design and selecting appropriate, properly matched skeletal seals.
Technical Specification for Vibratory Roller Control Systems
1. During operation, the tumble drum must be started before the machine is run; the gas turbine should first be set to medium speed, then increased to high speed.
2. When shifting gears and reversing, reduce the vehicle’s engine speed during gear changes.
3. Do not operate the vibratory roller on solid ground.
4. When damaging soft subgrade works, first induce damage 1–2 times without vibration, and then proceed with vibratory compaction.
5. During turning, the vibration frequency should remain constant. For vibratory rollers with adjustable vibration frequencies, the frequency must be set before operation; adjusting the frequency when no vibration is present is prohibited.
6. After the main clutch has been disengaged, adjustments should be made to the shift clutch, the start-up clutch, and the braking system.
7. When operating on steep slopes, do not engage the rapid‑shift mechanism. In sharp curves, when a articulated vibratory roller overturns within a tight turning radius, the rapid‑shift gear must not be engaged.
8. When traveling at high speed, the roller must not engage with the vibration gear.
9. Upon shutdown, initiate the shutdown vibration sequence, then return the reversing mechanism to its central position, shift the transmission into neutral, and subsequently engage the brake lever. After allowing the engine to decelerate, shut down the gas turbine.
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