Bevel Gearbox Rapid Development
With the rapid development of the railway industry, for the railway construction, maintenance and repair of large-scale road maintenance machinery has also been rapid development. Bevel Gearbox At present, widely used in China's large-scale railway road maintenance machinery are the following: tamping car, stable car, cleaning machine, ballasted plastic cars, rail grinding and so on. Each kind of mechanical axle gear box according to its own models of the work needs, have their own unique drive design, but as an important part of the road maintenance machinery, they must meet the following requirements: ① high-speed and can quickly enter and exit the block ; ② their own operations need to travel; ③ different types of mechanical linked to the needs of running. Bevel Gearbox This paper mainly analyzes the working structure and transmission principle of DC-32 tamping car and WD-320 stable axle gear box, and explains the fault handling method through practical case
The axle gearbox is the last part of the drive system that transmits power to the wheel pair, reducing the speed of the drive shaft or hydraulic motor, increasing the torque and driving the wheel to rotate. In a variety of large-scale road maintenance machinery, axle gear box structure, speed ratio is not the same, the current domestic use WD-320 stable car drive system and DC-32 tamping car basically the same, Bevel Gearbox so the two axles Gearboxes are basically the same. In this part of the structure of the structure only to tramcar axle gear box as an example to analyze.
DC-32 tamping car has three axle gear box, divided into active bogie axle gear box (hereinafter referred to as axle gear box Ⅰ) and driven bogie axle gear box (hereinafter referred to as axle gear box Ⅱ) two types. DC-32 tamping car with high-speed, low-speed two sets of travel transmission system, the high-speed travel using hydraulic mechanical transmission, low-speed travel using static hydraulic drive.
When the rammer is traveling at high speed, the two axes of the front bogie are the driving shafts. The drive route is: engine → hydraulic torque converter → gearbox → output shaft → transfer case → drive shaft → axle gear box → wheel.
When the tamping machine is running, it is required to start, brake or commut for the step-by-step tamping operation. The drive route is: engine → hydraulic transmission → oil pump → oil motor → gear box → drive shaft Box output shaft → drive shaft → transfer case → drive shaft → axle gear box → front bogie → wheel. At the same time, another oil motor (auxiliary motor) drives the rear of the bogie as an auxiliary drive to increase the wheel traction.
The structure of the axle gearbox II is shown in Fig. The gear box is used in Figure 4 shows the unipolar cylindrical gear mode, mainly composed of two shafts. Bevel Gearbox The input shaft 5 is a first shaft, the inlet end of which is connected to the motor by splines, and a small cylindrical gear 8 which is slidable in the axial direction by means of splines. The axle 3 is the second axis, and the shaft is press-fitted with a large spur gear 1 to drive the axle to rotate. The axle gearbox is provided with a cylinder-operated clutch which is engaged with the large cylindrical gear 1 by pushing the fork 7 on the clutch shaft 6 to drive the small straight cylindrical gear 8 to be engaged. The transmission ratio of the axle gearbox is 1: 3.944.
The axle gear case II is provided with a clutch operated by a cylinder. When the high speed travels, the gear 8 is separated from the gear 1. When the work is running, Bevel Gearbox the gear 8 is engaged with the gear 1 through the air control cylinder, and the axle becomes the driving shaft. This type of axle gear box due to the design of the clutch shaft, so in the two conditions of conversion, Bevel Gearbox if the control part of the cylinder can not successfully complete the movement of gear 8, it will lead to damage to the entire transmission system, therefore, usually must pay attention to Clutch air cylinder control part of the inspection and maintenance.