The maximum outer diameter of the large bevel gear is 121, the middle is the wheel, the outer diameter of the wheel is eight 50, the maximum size of the inner hole is 83, the maximum height of the gear is 170Inln, and the teeth of the outer circle are made of web and rib. Connected with the middle wheel, the hot section of the wheel is in the middle of the wheel and the web. The pouring position is that the teeth are facing downwards, and there is a long distance between the teeth and the wheel. In the original process, the iron liquid was played by four price slaves, and the bottom of the wheel was flown by the person, and then gradually passed through the eight ribs to flow the entire circle of teeth. Since it is a casting tooth, the iron liquid is at the exit of the eight ribs, and one tooth and one tooth are overturned, and finally the entire tooth is filled. In this process, the heat dissipation of the molten iron along the path to the molding sand is relatively large, and the temperature of the molten iron flowing to the tooth portion is relatively low, especially the bottom of the tooth, so that the bottom of the tooth is easily separated. Especially when the flow rate of the gate is limited and the temperature of the molten iron is low, it is easier to form a cold partition defect.
The maximum geometrical hot section diameter of the diesel flowmeter in the wheel is about 70n, and the diameter of the top geometrical hot section is about m. On the original process, the dome of the bamboo shoot 45 is placed on the hot section of the wheel, but it increases. Contact with the hot section to extend the contraction time at the wheel heat zone. The riser stops the feeding flow at a small solid phase rate, and the riser action time is correspondingly shorter. The contact hot section of the wheel and the riser has not yet reached the riser, and the flow of molten iron in the riser has been blocked. When the neck of the riser is blocked, except for the lower part of the riser, the top of the household ladder wheel has been formed into a hard shell, that is, the top heat center of the wheel has been moved to the root of the riser, and the top surface of the wheel is no longer flowable. liquid. If the wheel is still shrinking, the iron can only be sucked from the root of the sun, resulting in a shrinkage hole at the root of the riser. According to the above analysis, it is believed that the design of the pouring system must ensure a large flow of Jiang Guoqiang, and the filling should be smoother and faster, and the riser should have enough iron liquid to facilitate the feeding. According to the structure of the large bevel gear, it is considered that two pressure-feeding risers are placed symmetrically in the wheel-yielding part, so that the riser slightly deviates from the hot section of the wheel.
All
planetary cycloidal reducer gear can be divided into three parts: input parts
reduction output section on the input shaft is equipped with a displacement of
180 double eccentric sleeve, turn on the eccentric sleeve is equipped with two
called arm of roller bearing, the formation of H institutions two cycloid gear
center hole is the eccentric sleeve on the turning arm bearing raceway, and by
a group of cycloid gear and pin gear mesh circular permutation needle, to form
tooth difference for the internal meshing gear reducer is organization,( 1437651,in
order to reduce friction, in the speed reducer ratio is small, the needle with
needle teeth on the gear set)
When the input shaft with eccentric sleeve
rotation for a week, because of the characteristic of the cycloid gear tooth
profile curve and its restricted by needle on the gear teeth, the movement of
the cycloid gear becoming both revolution and rotation of the plane movement,
turn on the input shaft is week, eccentric sleeve also turn the week, cycloidal
wheel turned a gear reduction is obtained in the opposite direction, and then
with the help of W output mechanism, the cycloid gear rotates at low speed
movement through the pin shaft.
Cycloid Accessories
Cycloid Accessories, Cycloid Bearing, Pinwheel Housing, End Cover, Cycloid Wheel
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