The Improvement Of Jaw Crusher Eccentric Shaft

The Improvement Of Jaw Crusher Eccentric Shaft

The improvement of jaw crusher eccentric shaft
First, to improve bad situation
The jaw crusher has been put into operation in the 1990s, multiple sleeve loosening the eccentric shaft sleeve, flywheel inattentive phenomenon, our engineers, testing, analysts rest assured that the crusher eccentric shaft sleeve, gland, there are some structural defects.
There are two main reasons:
The crusher eccentric shaft deliver kits and sleeve threaded to the design is unreasonable, the pulley end and flywheel end gland, sleeve threads are right hand. Counterclockwise revolution during operation, the eccentric shaft in the direction of the flywheel end, when the eccentric shaft hell bent by the sleeve counterclockwise course due to inertia, the gland a clockwise orbit of the torque to the flywheel pulley side sealed sets of threads are right hand, why the two glands disposition to motion both the direction of the pulley, pulley side of the gland motion to the pulley direction will pulley top tight end of the cone and, in turn, set firmly in the top tight in eccentric shaft, the pulley end of the sleeve is not too loose flywheel gland moving direction of the pulley, will consent the flywheel end, make the sleeve easy to loose the incident of slow-moving in the loss of top tight force eccentric shaft.
Taper sleeve and the contact area between the eccentric shaft with the surface is not enough, by design, the contact area is less than 80 %, in order to create enough friction to overcome the inertia force of the taper sleeve, if less than 80 %, will generate the sleeve in the eccentric axle to produce loose, loose, eccentric shaft cylindrical and cone comprising a hole indolent and cause the flywheel face lethargic. So that equipment can not control.
Second, repair and improvements
Change the flywheel side resolve sleeve and the sleeve threaded to
Because the flaxen thread is right - handed, the glands of sleeve will not measure to the pulley side, the pulley side generous, so the pulley end threaded to the need to silver, the flywheel side deliver sleeve and the sleeve threaded dextral changed to L eccentric shaft counterclockwise rotation, desired to the inertia force, the gland stratagem the decree of the flywheel to the top tight flywheel, turn the flywheel cone stuck tight - Top eccentric shaft sleeve eccentric fulcrum does not produce thoughtful.
Repair with the occur of the eccentric shaft and the Bushes
Increase the understanding area, lazy the eccentric shaft and bevel serviceable welding surfacing, roughing and finishing the car, with the loom grinding, the grinding red tape is: to repair a good sleeve into the eccentric shaft with the spring, with the purpose of 400 emery do grinding media, grinding time 0. 5h, clean emery coated mimeographed warrant, matching as the mistake, use the aforementioned red tape and then grinding until you meet the requirements.
Repair worn flywheel end
100mm flywheel gland contact face tardy on the flywheel side of the set of a 100mm long, short sets, in order to maintain the identical flywheel in the eccentric shaft position.
Third, the pef900 × 1200 jaw crusher eccentric shaft improve the effectiveness
Improvement of the higher several pef900 × 1200 jaw crusher after a year of use, well, eccentric shaft and the Bushes did not come too loose, not only save a lot of spare parts costs, reducing the maintenance workload, but also better with other equipment production, improve the operating rate.
 
 
 
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