Indexable universal joint grease injection device

Abstract

The invention discloses an indexable universal joint grease injection device and relates to the field of universal joint grease injection maintenance. The indexable universal joint grease injection device mainly comprises a grease cup sleeve, a grease cup core body and a straight-through type forced filling grease cup. Fresh grease enters a grease channel from the straight-through type forced filling grease cup and is extruded out from a grease guide hole. By successively rotating the grease cup core body at interval of 90 degrees, the grease is sequentially injected into four cross-shaped through hole grease channels of a cross-shaped shaft. The indexable universal joint grease injection device has the beneficial effects that the grease can be sequentially injected into four bearings of auniversal joint by only using one grease injection device, the grease is injected into each bearing individually by means of an indexable manner, interference is avoided, and it is ensured that the grease can be injected into each bearing fully; the situation that due to the oil injection pressure difference among four bearing channels, the bearing with large resistance can never be injected withthe grease fully is avoided; and compared with the scheme of arranging one grease cup on the bottom of each bearing, the structure is simpler, the number of parts is less, increase of the turning radius of a transmission shaft assembly is avoided, and users accept the device more easily.

Description

technical field [0001] The invention relates to the field of universal joint oil injection maintenance, in particular to an indexable universal joint oil injection device. Background technique [0002] The existing universal joint oiling method usually sets an oil cup hole in the middle of the cross shaft or at the side of the 45° angle between the two journals or at the bottom of the bushing, and the cross shaft is equipped with a "ten" through-hole oil passage to connect the four bearings , the oil cup adopts ordinary straight-through pressure oil cup or joint type pressure oil cup, and the oil gun fills grease from the oil cup to the universal joint. Achieve lubrication. [0003] Grease is injected into the four bearings through the "ten" through-hole oil passage, and overflows from the lip of the oil seal after filling the internal clearance of the bearings. However, in fact, due to factors such as manufacturing tolerances and clogging of foreign matter, the pressure r...

AI Technical Summary

Problems solved by technology

However, in fact, due to factors such as manufacturing tolerances and clogging of foreign matter, the pressure required for the oil out of the four bearings is different. Among them, the bearing with the smallest required pressure can be filled and squeezed out of grease first, and then the pressure in the oil passage will not increase significantly, so Bearings that require the most pressure often cannot squeeze out grease, and grease cannot be renewed, which means that the bearing cannot be effectively maintained, and eventually the bearing will fail prematurely

[0004] If the solution of installing oil cups at the bottom of the four bushings is adopted, the cost will be increased in manufacturing, and the radius of gyration of the transmission shaft assembly will be increased, which is not conducive to the assembly layout, and the effect is not ideal

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