Improvement of gearbox of yzc10 double drum vibratory roller

Author: YTO (Luoyang) Construction Machinery Co., Ltd. Room Yi yzc10 liter double drum vibratory roller is a company based on market demand for new models I developed, and soon, the aircraft often appear on the market transmission input shaft reversing gear Burned within the bearing, so that the machine can not be normal work. To this end, we conducted an in-depth study, and ultimately find the crux of the problem and found that the structure of the variable speed transmission has the following drawbacks: (1) transmission height, high-speed rotation of the input shaft at the top of the transmission; output shaft in the most The lower end, its speed is lower, rely on the splash lubrication of bearings on the input shaft lubrication and reverse gear bearings, it is difficult to achieve the most satisfactory results. (2) The original ball bearings in the reversing gear basically can not bear the axial force, but the actual situation is that the roller needs to be changed frequently so that the ball bearings in the reversing gear are often subjected to the axial impact load. Based on the above two points, the ball bearings in the reversing gear are difficult to get good lubrication due to the rotation of the input shaft rotating at a high speed. Over time, the bearings are burnt to death in the reversing gear due to the heat, Ball bearings to the force often bear the impact of axial load, thus accelerating the bearing damage. The situation also confirmed that when opening the transmission cover, start the diesel engine and the commutation operation, it is clear that only a small amount of oil splashed on the input shaft, and can hear a significant impact sound. Through the above analysis and actual confirmation, has found the key to the problem. To this end, we made the following improvements to the structure of the transmission: (1) The ball bearings in the reversing gear in Fig. 1 were changed to needle bearings so that the inner and outer rings could be separated and could withstand a certain axial So as to meet the needs of practical work. (2) An independent lubrication system has been added. The system draws oil from the transmission through the engine-driven lubrication pump and sprays the oil on the input shaft so that both the support bearings and the needle roller bearings in the reversing gear Get full lubrication. (3) On the reversing gear, drill two lance holes at the position of the needle bearing oil groove, and install the oil slinger 1, 7 on both ends of the reversing gear so that both the bearing and the support shaft Can be fully lubricated. The improved structure proved by actual use, the effect is very good, greatly reducing the "three guarantees" costs, and achieved a good market reputation.

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