A multi-race high-torsion axial slip universal joint assembly

Abstract

A multi-race high torsional axial slip joint assembly. Mainly solve the problem of poor torsional resistance of traditional three-ball pin type universal joint. Its characterized in that: it further includes a plurality of convex ring (231), set in the outer circumferential wall of the ball ring, the channel is provided with the annular groove (111) one by one with the convex ring is matched;First rolling element (24), set between the outer ball ring and the inner ball ring, second rolling element (25), set between the inner ball ring and the shaft neck. The utility model provides a kind of multi-race high torsional axial slip joint assembly, when large torque input, stress distribution is balanced, avoid local overload;Through finite element simulation analysis, the torsional resistance of product is improved by more than 30% than traditional single-race universal joint, the maximum torque carrying capacity can reach 5000N·m, meet the extreme working condition demand of heavy engineering machinery, high-performance vehicle etc.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts, specifically to a multi-raceway high torsion-resistant axially sliding universal joint assembly. Background Technology

[0002] As a key hub for power transmission, the constant velocity joint's torsional strength and load-bearing reliability directly determine the upper limit of the entire transmission system, especially under extreme conditions such as heavy construction machinery, large buses, and high-performance vehicles. These applications not only require the universal joint to withstand extremely high torque loads continuously, but are also often accompanied by severe impact loads, placing almost stringent requirements on the universal joint's structural integrity and fatigue life.

[0003] Traditional three-ball-pin universal joints have inherent bottlenecks in their torque transmission path. They typically employ a ball-pin-raceway pair, resulting in a relatively simple torque transmission path. Under high torque, stress in this structure becomes highly concentrated in a limited contact area. Limited by the single-path load-bearing mechanism, increasing the torque density of traditional structures reaches a bottleneck. Utility Model Content

[0004] To overcome the shortcomings of the prior art, this utility model provides a multi-raceway high torsion resistance axially sliding universal joint assembly, which mainly solves the problem of poor torsion resistance of the traditional three-ball pin universal joint.

[0005] The technical solution of this utility model is as follows: A multi-raceway high-torsional-resistance axially sliding universal joint assembly includes a housing and a three-ball pin assembly. The inner wall of the housing is provided with channels. The three-ball pin assembly includes a three-pin holder, an outer ball ring, and an inner ball ring. The three-pin holder includes a journal and further includes… Several protruding rings are provided on the circumferential outer wall of the outer spherical ring, and the channel is provided with annular grooves that are adapted to each of the protruding rings. A first rolling element is disposed between the outer ball ring and the inner ball ring. The second rolling element is disposed between the inner ball ring and the journal.

[0006] Both the inner wall of the inner ball ring and the outer wall of the journal are provided with receiving grooves for the movement of the second rolling element.

[0007] The first rolling element is a needle roller.

[0008] The second rolling element is a steel ball.

[0009] The housing is provided with a transmission tube, the inner wall of which is provided with a second channel, and also includes a half shaft. A portion of the half shaft extends into the transmission tube and is provided with a retainer. The retainer is provided with a ball that cooperates with the second channel.

[0010] The ball is made of stainless steel.

[0011] The half-shaft extending out of the transmission tube is provided with splines.

[0012] The convex rings are arranged in three opposite directions, and the receiving grooves are arranged in two opposite directions.

[0013] The beneficial effects of this utility model are: This utility model provides a multi-raceway high torsional resistance universal joint assembly with axial sliding capability, which provides a balanced stress distribution under high torque input and avoids local overload; through finite element simulation analysis, the product's torsional resistance is improved by more than 30% compared with the traditional single-raceway universal joint, meeting the needs of extreme working conditions such as heavy engineering machinery and high-performance vehicles. Attached Figure Description Figure 1 This is a cross-sectional schematic diagram of one embodiment of the present invention.

[0014] Figure 2 This is a partial cross-sectional view of one embodiment of the present invention. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings. A multi-raceway high-torsion axially sliding universal joint assembly includes a housing 1 and a three-ball pin assembly 2. The inner wall of the housing is provided with a groove. The three-ball pin assembly includes a three-pin holder 21, an outer ball ring 23 and an inner ball ring 22. The three-pin holder includes a journal 211 and a plurality of protruding rings 231 disposed on the circumferential outer wall of the outer ball ring. The groove is provided with annular grooves 111 that are adapted to each of the protruding rings. A first rolling element 24 is disposed between the outer ball ring and the inner ball ring, and a second rolling element 25 is disposed between the inner ball ring and the journal.

[0016] By setting a convex ring and annular groove mating structure between the outer ball ring and the housing, both effective torque transmission and axial relative sliding are ensured, solving the shortcomings of traditional universal joints in axial compensation. The double-layer structure of the outer and inner ball rings, together with the first and second rolling elements, forms multiple load transmission paths, effectively dispersing stress and greatly improving the torsional strength and service life of the universal joint. By setting receiving grooves on the inner ball ring and journal, a stable motion track is provided for the second rolling element, ensuring smooth transmission. In this embodiment, as Figure 2As shown, both the inner wall of the inner ball ring and the outer wall of the journal are provided with receiving grooves 221 for the movement of the second rolling element. The inner wall of the inner ball ring 22 and the outer wall of the journal 211 are both machined with receiving grooves 221, providing a stable track for the steel balls. This structure effectively reduces frictional resistance and improves transmission efficiency. This multi-layer rolling structure forms multiple load transmission paths, significantly improving the torsional strength of the universal joint.

[0017] In this embodiment, as shown in the figure, the first rolling element is a needle roller.

[0018] In this embodiment, as shown in the figure, the second rolling element is a steel ball.

[0019] In this embodiment, as Figure 1 As shown, the housing is provided with a transmission tube 4, the inner wall of which is provided with a second channel, and also includes a half-shaft 5. A portion of the half-shaft extends into the transmission tube and is provided with a retainer. The retainer is provided with ball bearings 51 that cooperate with the second channel. This structure further enhances the sliding capability of the universal joint.

[0020] In this embodiment, as shown in the figure, the rolling ball is made of stainless steel. Stainless steel is used to ensure the wear resistance and service life of the rolling ball.

[0021] In this embodiment, as Figure 1 As shown, a spline is provided on the half-shaft extending outside the transmission tube 4. A spline is machined on the half-shaft 5 extending outside the transmission tube 4 to facilitate connection with other transmission components.

[0022] In this embodiment, as shown in the figure, three convex rings are arranged vertically opposite each other, and two receiving grooves are arranged vertically opposite each other. The convex rings are arranged in parallel, and the receiving grooves are also arranged in parallel.

[0023] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0025] The embodiments described with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. The embodiments should not be considered as limitations on the present invention, but any improvements made based on the spirit of the present invention should be within the protection scope of the present invention.

Claims

1. A multi-raceway high-torsion axially sliding universal joint assembly, comprising a housing (1) and a three-ball pin assembly (2), wherein the inner wall of the housing is provided with a groove, and the three-ball pin assembly comprises a three-pin holder (21), an outer ball ring (23) and an inner ball ring (22), and the three-pin holder comprises a journal (211), characterized in that: Also includes A plurality of protruding rings (231) are provided on the circumferential outer wall of the outer spherical ring, and the channel is provided with annular grooves (111) that are adapted to each of the protruding rings. The first rolling element (24) is disposed between the outer ball ring and the inner ball ring. The second rolling element (25) is disposed between the inner ball ring and the journal.

2. The multi-raceway high-torsional-resistance axially sliding universal joint assembly according to claim 1, characterized in that: The inner wall of the inner ball ring and the outer wall of the journal are both provided with receiving grooves (221) for the movement of the second rolling element.

3. The multi-raceway high-torsional-resistance axially sliding universal joint assembly according to claim 1, characterized in that: The first rolling element is a needle roller.

4. A multi-raceway high-torsional-resistance axially sliding universal joint assembly according to claim 1, characterized in that: The second rolling element is a steel ball.

5. A multi-raceway high-torsional-resistance axially sliding universal joint assembly according to any one of claims 1-4, characterized in that: The housing is provided with a transmission tube (4), the inner wall of the transmission tube is provided with a second channel, and also includes a half shaft (5). Part of the half shaft extends into the transmission tube and is provided with a retainer. The retainer is provided with a ball (51) that cooperates with the second channel.

6. A multi-raceway high-torsional-resistance axially sliding universal joint assembly according to claim 5, characterized in that: The ball is made of stainless steel.

7. A multi-raceway high-torsional-resistance axially sliding universal joint assembly according to claim 6, characterized in that: The half-shaft extending out of the transmission tube is provided with splines.

8. The multi-raceway high-torsional-resistance axially sliding universal joint assembly according to claim 2, characterized in that: The convex rings are arranged in three opposite directions, and the receiving grooves are arranged in two opposite directions.

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