Shaft effect

Abstract: A shaft driven motorcycle rear wheel suspension in which reactive energy in the gear housing is directed into the frame and away from the damping unit is provided by a four bar arrangement having the swing arm 28 connected to the gear housing 22 at a point 32 offset from the rear wheel axle 50, a link arm 38 above the swing arm and connected at the wheel axle, and bars 36, 40 interconnecting the swing arm and the link arm.

Abstract: In order to solve the problem of how to make effective use of the natural ventilation in the shaft to assist the mechanical ventilation in the long tunnel and improve ventilation effect and save energy consumption, based on the construction ventilation of Guantian tunnel, the influence parameters of natural ventilation in shaft were carried out by theoretical analysis, numerical simulation and field test. The research results show that the natural ventilation of shaft has a certain effect on assisting mechanical ventilation under specific temperature conditions, the effect of strengthening the ventilation by changing the diameter of the shaft is limited. Within 250m of shaft depth, the ventilation effect of the shaft increases with the increase of the shaft depth, but the ventilation effect has no significant change with the depth increasing when the shaft depth is more than 250m. The greater the temperature difference, the better the natural ventilation effect of the shaft, and the natural ventilation effect of the shaft as outlet in winter is better than that of the shaft as inlet in summer. The introduction of fresh airflow into the main tunnel is the key to the implementation of the air intake scheme of the shaft. It is reasonable to set the fan away from the 5m position of the middle line of the shaft.

Abstract: The utility model discloses a steering drive axle, including the transmission shaft body, this end of body of transmission shaft sets up fork of first festival, and just the fork was connected with first bearing one end the first festival, the protective sheath sets up dampening ring in the junction of first bearing and secondary shaft, and the dampening ring interval is provided with soundproof cotton, the opposite side and the third bearing swing joint of secondary shaft, and third bearing and second festival fork swing joint, second bearing inboard is provided with the solid fixed ring of spin, and the solid fixed ring of spin goes up the interval and be provided with the spin, the tooth position of axle is inside the solid fixed ring of spin. This steering drive axle is through makingtransmission shaft effect symmetry, and the department weakens the inside vibration through setting up the protective sheath at the hub connection, and the noise is eliminated, has solved the transmission shaft and has turned to in the use, connects between the axle and friction and vibration appear, takes place the shake of automobile body easily, and balance sensation is relatively poor, and thevibration makes that to produce the noise too big, the life's of fragile transmission shaft that weares and teares for a long time problem.

Abstract: The utility model relates to a roll web paper extraction device, include that the wheel hub reaches rather than the last item that corresponds, the stock form passes from between wheel hub and last item, install in the main shaft portion of eccentric shaft at the wheel hub both ends, installs the hand papercutter in the off -centre of the eccentric shaft portion, the guide way has on the wheel hub, the hand papercutter by spacing in the guide way, external force pulling stock form drives the wheel hub and rotates, and the wheel hub drives the hand papercutter and rotates in step, and the hand papercutter stretches out the long and thin groove of wheel hub and to stock form cutting, establishes paper interruption position under the eccentric shaft effect, the hand papercutter stretches out after the long and thin groove of wheel hub cuts off the stock form, and the wheel hub continues to rotate forward under reset spring drives and resets, drives that the paper stretches out one section distance in the machine so that implement extraction action next time. The utility model provides a mechanical type mechanism can reach similar paper extraction quick -witted performance and function, simplifies the installation, and the cut paper is reliably stable, reduces the part cost, can bring huge economic benefits.