Vibration isolation is divided into 2 categories, which are positive vibration isolation; the other is negative 1 pregnancy. In the vibration isolation of the coal mine air compressor room, 8 months of active vibration isolation, the design requirements for the vibration isolation efficiency of 80, allow the vibration speed 2 disturbance calculation 2.1 the disturbance generated air crank machine crankshaft with the drive mechanism for rotation When exercising. The piston is driven by the crankshaft linkage mechanism to perform a reciprocating shifting motion in the cylinder, so that the medium completes the intake compression and exhaust process in the cylinder. The pressure of the medium in the cylinder is the reciprocating motion of the inner balance piston, and the balance inside the crankshaft causes periodic disturbance. The piston compressor performs the combination of rotation and reciprocation during the operation, the rotary motion generates the step disturbance force, the reciprocating motion generates the step and the step disturbance force, and the high-order disturbance force is small and negligible. Since the cranks of the compressor and the respective disturbance lines of action are both deviated from the center of the crankshaft, the vertical component and the horizontal component force respectively generate a rotational moment about the axis and a torsional moment about the two axes. The frequency of the compressor's step disturbance is the spindle's speed per second; positive initial conditions or constraints can also be used for structural optimization of similar shafts. 1 Sun Jingmin. Mechanical optimization design friends. Beijing Mechanical Engineering University Press, 2003. 2 Sun Guozheng. Optimization design and application 1 Beijing People's Communications Press, 2000. 3 wear less. Material mechanics. Beijing National Defense Industry Press, 2000. The frequency of the 1st order disturbance is 2 times. 2.2 Mass conversion The compressor has many moving parts, and the rotating moving parts have a handsome crank arm and a balanced iron. The reciprocating member has a piston and a crosshead assembly. The points of the connecting rod are combined motions of rotation and reciprocating phase. Since the mass distribution positions of these components are different, when calculating the disturbance force, the mass conversion should be performed separately according to the rotational motion and the reciprocating motion. 2.3 Disturbance calculation The general-purpose 1 coordinate system is based on the center of the cylinder arrangement on the main shaft of the crankshaft compressor. Axis, establish a right angle to sit. The standard is called 2, the direction of the force is the same as the coordinate direction, and the direction of rotation of the torque and the main axis is from the positive direction of each axis to the origin, and the counterclockwise is positive. 2 The disturbance to the movement is that the horizontal and vertical component and moment are 4 lin. Structural optimization design of the hollow shaft. Mechanical, 1999, 126 Dairy School 2003 graduate student. 1 Welcome to Lu, letter 181. 7 flute 3 Guo Xiang. 0, é“·, Feng Wei, Jin He. Shake the ugly, ugly and ugly choices, tremble and tremble, 7 è¡çŸ£ æ–— æ–—, painting all, buried, 蜀 1 接 æµ™ è‹• è‹• è‹• è‹• è‹• 。 。 。 。 。 。 。 。 。 。 3 umbrellas. Ugly, draw 1 smelt. 23 æ‹„ Yang Dou, the coordinates of the elastic reaction force of the + translation damper on the 7 axis. 4 The vibration calculation of the vibration isolation pedestal under the action of simple harmonic interference can be obtained by the vibration of the vibration isolation system under the action of the simple harmonic disturbance corpse (1), which is the ratio of the D damper resistance ratio, =1; between the tP interference force and the system vibration Phase difference m 2Db 9. In the light harmonic torque, = sub + action, the vibration of the vibration isolation system is, the vibration isolation frequency of the system requires that the natural vibration frequency of the system is less than the forced frequency. Therefore, the transient must occur during the startup or shutdown of the power equipment. Resonance, that is, through resonance, the maximum amplitude of the resonance through is smaller than the resonance amplitude at the time of stable vibration, but much larger than the stable vibration. To prevent excessive vibration of the equipment and excessive damper load on the damper, damping is required to control the amplitude of the passage through the resonance. The amplitude of the resonance is related to the speed of the resonance, and the faster the speed, the smaller the maximum amplitude. Since the power equipment starts and shuts down time is greater than 58 and the forced vibration frequency is greater than 10, the maximum amplitude of the resonance through is close to the amplitude of the stable resonance. In engineering design, the two are assumed to be equal. The resonance is instantaneous, allowing the maximum vibration to be 5 times the vibration allowed when the vibration is stable, that is, 4=54, so that the damper can be calculated, and the muscles of the muscles are tested in the field of Xinwen Suncun Coal Mine. 1 20 spring dampers, 4 vertical and 5 longitudinal, symmetrically arranged. Ten 12-type dampers are selected for the twisting machine. After the vibration isolation design, the vertical speed at the bottom of the pedestal is 10.6. The maximum horizontal speed of the spindle center point is 4158, which is less than 1213. The vibration isolation damping coefficient is 0= .128, the minimum damping coefficient of the person who satisfies the efficiency of the report of 80 is 0.66. The design standard of the vehicle is improved, thus improving the living environment of Zhoushui. Research and production of mechanical management and mechanical automation and automation, and published several papers. Received date 2005 secretion 09 Metal 3D Printer,Ceramic Sand Casting Molds,Advanced Metal 3D Printer,Compact Binder Jet 3D Printer Guangdong Fenghua Zhuoli Technology Co., Ltd , https://www.fhzl3d-printer.com