CN211501386U - Three-ball pin universal joint without rolling needle and beneficial to lubrication - Google Patents

Abstract

The utility model discloses a no kingpin does benefit to lubricated tripod universal joint, mainly include the tripod, the ball ring, the axle journal, the oil groove, the cavity, three ball ring suit is on the three axle journal of tripod, the ball ring hole is equipped with the cavity with the axle journal cooperation department of tripod, set up the oil groove on the axle journal of tripod and on one of them ball ring hole surface, the diameter D1 of an orientation in axle journal cross-section is greater than another orientation diameter D2, the hole of ball ring forms clearance fit for the diameter of cylinder hole and the diameter D1 of axle journal. The utility model discloses a ball ring hole face of cylinder and the cooperation of the non-full cylinder of tripod axle journal, this workspace sets up lubricated region, has solved the lubrication of cooperation department to take away the heat that cooperation department motion produced, make lubricated abundant, the operation is nimble, has lubricated not enough, the inflexible problem of rotation when having solved prior art operation.

Description

Three-ball pin universal joint without rolling needle and beneficial to lubrication

Technical Field

The utility model relates to a field of universal joint, concretely relates to no kingpin does benefit to lubricated tripod universal joint.

Background

A novel tripod universal joint with the notice number of CN202646437U is provided and comprises a tripod body and ball rings, wherein three pin shafts are uniformly distributed on the tripod body, and the ball rings are rotatably sleeved on the pin shafts. The tripod universal joint of the scheme only comprises a tripod body and a ball ring, has a simple structure, can improve the assembly efficiency of workers, and reduces the production cost. Parts with weaker structural strength such as a rolling needle, a check ring, a clamp spring and the like are reduced, so that the size of the tripod universal joint can be smaller under the condition of the same strength requirement, the cost is reduced, and the market demand is met; and the tripod universal joint can bear higher strength and prolong the service life under the condition of the same volume. However, the three shaft pins and the ball rings of the tripod universal joint tripod body are matched with each other by the full-cylindrical surface and the full-cylindrical surface, so that the problems of insufficient lubrication and inflexible rotation exist during operation.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the not enough of prior art existence, and provide a no kingpin does benefit to lubricated tripod universal joint.

The purpose of the utility model is accomplished through following technical scheme: the tripod universal joint without the rolling needles and beneficial to lubrication mainly comprises a tripod, ball rings, shaft necks, oil grooves and cavities, wherein the three ball rings are sleeved on the three shaft necks of the tripod, the cavities are formed in the matching positions of inner holes of the ball rings and the shaft necks of the tripod, the oil grooves are formed in the shaft necks of the tripod and one of the surfaces of the inner holes of the ball rings, the diameter D1 of one direction of the cross sections of the shaft necks is larger than the diameter D2 of the other direction, the inner holes of the ball rings are cylindrical holes, and the diameters of the inner holes and the diameter D1 of the shaft necks form clearance fit.

The cavity is a grease zone.

And a certain inclined included angle is formed between the oil groove and the axis of the shaft neck.

The utility model has the advantages that: the utility model discloses a ball ring hole face of cylinder and the cooperation of the non-full cylinder of tripod axle journal, this workspace sets up lubricated region, has solved the lubrication of cooperation department to take away the heat that cooperation department motion produced, make lubricated abundant, the operation is nimble, has lubricated not enough, the inflexible problem of rotation when having solved prior art operation.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a sectional view a-a in fig. 1.

Fig. 3 is a schematic view of the structure of the tripod of the present invention.

Fig. 4 is a side view of the tripod according to the present invention.

Fig. 5 is a schematic view of the oil groove of the present invention.

Fig. 6 is a schematic view of the ball ring of the present invention.

Description of reference numerals: the ball joint comprises a tripod 1, a ball ring 2, a shaft neck 3, an oil groove 4 and a cavity 5.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings:

example (b): as shown in the attached drawings, the tripod universal joint without the rolling needles and beneficial to lubrication mainly comprises a tripod 1, a ball ring 2, shaft necks 3, oil grooves 4 and cavities 5, wherein the three ball rings 2 are sleeved on the three shaft necks 3 of the tripod 1, the cavities 5 are arranged at the matching positions of inner holes of the ball rings 2 and the shaft necks 3 of the tripod 1, and the cavities 5 are lubricating grease areas. Sufficient lubrication is provided for the ball 2 to engage with the journal 3 of the tripod 1 while taking away heat generated by the movement between the tripod 1 and the ball 2. An oil groove 4 is arranged on one of the shaft neck 3 of the tripod 1 and the inner hole surface of the ball ring 2, so that the lubrication between the shaft neck 3 and the inner hole of the ball ring 2 is more sufficient. The journal 3 is not provided with an oil groove 4 at the same time as the inner bore of the ball ring 2, in order to avoid inflexibility of the movement. The oil groove 4 and the axis of the shaft neck 3 form a certain inclined included angle. The diameter D1 of the journal 3 in one direction is larger than the diameter D2 in the other direction, which provides for the formation of a lubrication cavity 5 between the journal 3 and the inner bore of the ball ring 2. The inner bore of the ball ring 2 is cylindrical and has a diameter which forms a clearance fit with the diameter D1 of the shaft journal 3.

It should be understood that equivalent substitutions or changes to the technical solution and the inventive concept of the present invention should be considered to fall within the scope of the appended claims for the skilled person.

Claims (3)

1. The utility model provides a no kingpin does benefit to lubricated tripod universal joint which characterized in that: mainly include tripod (1), ball ring (2), axle journal (3), oil groove (4), cavity (5), three ball ring (2) suit is on three axle journal (3) of tripod (1), ball ring (2) hole is equipped with cavity (5) with axle journal (3) cooperation department of tripod (1), set up oil groove (4) on axle journal (3) of tripod (1) and ball ring (2) hole surface two, the diameter D1 of an orientation of axle journal (3) cross-section is greater than another orientation diameter D2, the hole of ball ring (2) forms clearance fit for the diameter of cylindric hole and the diameter D1 of axle journal (3).

2. The needle-free, lubrication-facilitating tripod joint of claim 1, wherein: the cavity (5) is a lubricating grease area.

3. The needle-free, lubrication-facilitating tripod joint of claim 1, wherein: and a certain inclined included angle is formed between the oil groove (4) and the axis of the journal (3).

Images