Medium 138.51 document identification code into the 1 introduction gear air motor 圮 my public hand-held pneumatic help anchor rig's rotation characteristics directly determine the working ability of the drill. In order to meet the requirements of coal mine users for the high reliability and light weight of the drilling tool, the metal hollow shaft gear motor has been designed to meet the above requirements. The structure is special and has obtained national patent.
2 Metal hollow shaft gear air motor design 21 Determination of gear parameters Gear type air motor with deceleration device to reduce output speed and increase output torque. The motor is composed of parts such as front and rear cover gears of the casing. 1. The gear is the core part of the motor, and its structural parameters directly determine the output characteristics of the motor.
1. Rear cover 2 housing 3. Gear 4. Front cover 1. Deceleration portion. At present, the part of the motor in China is called the coal roadway. The bottom drilling of the coal mine is only below 80, and the torque required to screw the pallet nut cannot be reached.
Therefore, the design goal is determined to be that when the wind pressure is 5, the motor fire speed torque is 90 idling speed. 1 To reach the motor design requirements, to determine the motor gear parameters reasonably, it is necessary to understand the correspondence between the motor output torque and the gear parameters. In the long-term practice, it is concluded that the hydraulic gear motor torque calculation formula is used to calculate the stall torque of the gear air motor, such as the A gas motor reduction ratio; the air motor per revolution product. 3.
B motor tooth width, 匪1 gas motor actual output switch according to Equation 3, after repeated calculations, finally remember the motor wheel parameters and reduction ratio.
It is true that the parameter corpse technique formula is calculated and set in the wind. At 51 o'clock, the theoretical stall torque of the motor is 106. When 10.55 is selected, the actual stall torque of the motor is 90.
2.2 Motor rated torque in the working process of the pneumatic drilling rig, reflecting the working efficiency torque of the drilling rig, and the calculation of the rated torque has no ready-made formula, in the long-term practice and continuous thinking, summed up for gear pneumatic The motor is calculated from the formula according to the formula. In order to provide the product torch, the torque of 452.3 metal hollow shaft gear will be set to achieve the goal of light weight of the motor. The main part casing and the front and rear covers are designed as explosion-proof aluminum alloy. To ensure the reliability of the drilling rig, the motor gear is designed as a steel gear. In order to reduce the retry, a special 1 art is used to make the gear center. The formation of a metal hollow shaft inner wheel, which not only guarantees the motor's theoretical torque of the motor, but also proposes a new design method for the rotary shaft flow fan. Chai Guangyuan Xi'an University of Science and Technology, Xi'an 710054, Shaanxi, China, applied to the design of wind turbines. A new design method of rotary axial flow fan is proposed. 1 Introduction Mine ventilator adopts axial flow fan, which is used for ventilation of 3 underground mines. The counter-rotating axial flow fan is especially suitable for downhole applications.
At present, the information on the system theory and design method of the rotating shaft axial flow fan is still very scarce, and the experimental results and data are few.
The quality test of some products in the market needs to be improved, and there are problems such as low efficiency, low noise, high structural vibration, blade stall, etc., especially in the first stage moving blades. Such as blade breakage burned motor. Seven reasons to pay for the point-type axial flow fan design is not perfect, so. Theoretical design and experimental research on the counter-rotating axial flow fan, improving the design quality and operating efficiency of the product is the fundamental way to improve the performance of the counter-rotating axial flow fan.
2 Design status of the counter-rotating axial flow fan The rotary axial flow fan is mainly composed of two main components, such as two counter-rotating rotors and two motors. The fan is mainly composed of two main engines, and the two main engines are composed of inner and outer air cylinder motor seats. And the motor is composed of the impeller shaft extension end directly installed with the impeller, and the impellers of the two main engines rotate in opposite directions to form a counter-rotating structure. The two-stage impeller is both a working wheel and a vane, which avoids the energy loss of the transmission between the motor and the impeller.
The counter-rotating axial flow fan has two moving impeller rotations.
Compared with the traditional axial flow fan, the performance and design method have outstanding pressure characteristics and simple structure. The anti-wind performance can reach 60. It is a tunnel. The ideal ventilation of the mine facing the wind 24 test results After the trial production of the product, the three samples were sent to the Beijing Rock Drilling Machine Testing Center for testing. The test results are as follows.
Inspection project standard requirements stipulated value Prototype number inspection result Stall torque rated torque such as no-load speed, such as 1 test, the calculation is correct, the result has reached the design goal, the calculation of the torque formula is reasonable and in line with the actual.
3 Conclusion The design of the metal hollow shaft gear air motor ensures that the rig has the characteristics of high torque, high reliability and light weight. The drill has been put on the market and has responded well. The promotion and application of this product will surely play an increasingly important role in the safe production of coal mines.
1 耿 Feng Xiao. The calculation of the torque consumption of the gear type air motor. Proceedings of the 1st Youth Academic Conference of China Mechanical Engineering Association. Beijing Machinery Industry Press, 199 3 Zhang Guozhong. Pneumatic impact equipment and its design. Beijing Mechanical Industry Press, specializing in fluid transmission and control at Zhejiang University. For many years, he has been engaged in the development of pneumatic and hydraulic products, and he has made several articles. 10., 680 mouth received date 200, 20
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