CN115523240B - A ball cage type constant velocity universal joint with a large working angle of 60° - Google Patents

Abstract

The invention relates to a ball cage type constant velocity universal joint with a large working angle of 60 degrees, which comprises an input shaft, a bell housing module, an outer layer retainer, a plurality of outer layer steel balls, a double-side integrated star cover module, an inner layer retainer, a plurality of inner layer steel balls, a star cover, an output shaft, a thrust spring and a swing angle coordination mechanism module, wherein the inner layer retainer is provided with a plurality of inner layer steel balls; the input shaft is fixedly connected with the bell housing module; the inner surface and the outer surface of the outer retainer are respectively matched with spherical pairs on the outer surface of the double-side integrated star cover module and the inner surface of the bell housing module; the inner surface and the outer surface of the inner layer retainer are respectively matched with spherical pairs on the outer surface of the star cover and the inner surface of the double-side integrated star cover module; the outer layer steel balls and the inner layer steel balls are respectively distributed in the corresponding rollaway nest to transmit motion; the output shaft is fixedly connected with the star sleeve; the swing angle coordination mechanism module is responsible for adjusting the swing angle of the double-side integrated star cover module relative to the bell housing. Compared with the existing constant velocity joint, the invention can further reduce the turning radius of the vehicle and widen the application scene of the constant velocity joint.

Description

A ball cage type constant velocity universal joint with a large working angle of 60°

technical field

The invention relates to the technical field of rigid constant velocity couplings, in particular to a ball cage type constant velocity universal joint with a large working angle of 60°.

Background technique

Ball cage constant velocity universal joints are often used for constant velocity motion transmission between cross shafts, and are currently one of the most widely used constant velocity couplings. The advantage is that the axial structure is tight, and the disadvantage is that the working angle of the transmission is small, usually up to 47°, which limits its application range.

In the existing ball cage type constant velocity universal joint, the height of the edge of the bell-shaped shell determines the maximum swing angle that the output shaft can reach. If you want to obtain a larger swing angle of the output shaft, reducing the height of the edge of the bell-shaped shell is Necessary, but when the height of the edge of the bell-shaped case is too low, the steel balls for transmitting motion will break away from the bell-shaped case again, so the height of the edge of the bell-shaped case cannot be too low. This contradictory relationship is the main reason for limiting the further increase of the swing angle of the existing ball cage constant velocity universal joint. For actual working conditions that require a larger deflection angle, the existing ball cage universal joints often cannot be used due to the small deflection angle.

Contents of the invention

In view of the above problems, the purpose of the present invention is to provide a cage type constant velocity universal joint with a large working angle of 60°, which can effectively overcome the problems of insufficient swing angle of the existing cage joints.

The technical scheme that the present invention adopts is as follows:

A cage-type constant velocity joint with a large working angle of 60° proposed by the present invention includes an input shaft, a bell-shaped shell module, an outer layer cage, outer layer steel balls, a double-sided integrated star sleeve module, Inner layer cage, inner layer steel ball, star sleeve, output shaft, thrust spring and swing angle coordination mechanism module;

The input shaft is coaxially fixed with the lower end of the bell-shaped shell module; a cylindrical slideway is coaxially arranged inside the lower end of the bell-shaped shell module; , the outer surfaces are all spherical, and the double-sided integrated star sleeve module is correspondingly arranged on the inner side of the bell-shaped shell module; The number of raceways equal to the number of outer steel balls;

The inner surface of the outer layer cage cooperates with the outer surface spherical pair of the double-sided integrated star sleeve module; the outer surface of the outer layer cage cooperates with the inner surface spherical pair of the bell-shaped shell module; the outer layer steel The balls are respectively placed in the paired raceways and their movement along the direction of the raceways is restricted by the window of the outer cage;

The outer surface of the star sleeve is a spherical surface, and the lower end surface is provided with a coaxial ball socket, and the upper end surface is provided with a coaxial cylindrical groove; the star sleeve is correspondingly arranged on the inner side of the double-sided integrated star sleeve module; the The inner side of the double-sided integrated star-shaped sleeve module and the outer side of the star-shaped sleeve are respectively uniformly distributed with raceways equal to the number of inner layer steel balls;

The inner surface of the inner layer cage cooperates with the outer surface spherical pair of the star sleeve; the outer surface of the inner layer cage cooperates with the inner surface of the double-sided integrated star sleeve module with a spherical pair; the inner layer steel The balls are respectively placed in the paired raceways and their movement along the direction of the raceways is restricted by the window of the inner layer cage;

The output shaft is coaxially fixed with the cylindrical groove on the upper end surface of the star sleeve through splines;

The upper end of the swing angle coordinating mechanism module cooperates with the double-sided integrated star sleeve module and the star sleeve spherical pair in turn, and the lower end cooperates with the inner cylindrical slideway ball groove pair at the lower end of the bell shell module;

The thrust spring is arranged in the cylindrical slideway of the bell-shaped shell module, its lower end is in contact with the bottom surface of the cylindrical slideway, and its upper end is in contact with the lower end of the swing angle coordinating mechanism module. The thrust spring always provides a thrust to make the swing angle coordinating mechanism The upper end of the module is always in contact with the ball and socket on the star sleeve.

Further, the bell-shaped shell module includes an upper shell of the bell-shaped shell module, a lower shell of the bell-shaped shell module, and set screws; the lower shell of the bell-shaped shell module and the upper shell of the bell-shaped shell module are tightened Screws are fixedly connected to form a bell-shaped shell module; the lower end of the lower shell of the bell-shaped shell module is coaxially fixed with the input shaft; a cylindrical slideway is coaxially arranged inside the end handle of the lower shell of the bell-shaped shell module; The inner surface of the upper area of the lower housing of the bell-shaped shell module is a spherical surface, the radius of which is R ₁ , and the center of the sphere is O; , the radius of the center line of the raceway track is r ₁ , the center of the circle is O ₁ , and there is an eccentricity e ₁ between it and O.

Further, the double-sided integrated star sleeve module includes a double-sided integrated star sleeve lower housing, a double-sided integrated star sleeve upper housing, housing set screws, ball socket end caps, and end cover set screws; The lower housing of the double-sided integrated star sleeve and the upper housing of the double-sided integrated star sleeve are fixedly connected by housing fixing screws; the inner and outer surfaces of the double-sided integrated star sleeve module are spherical surfaces, and the radii of the spherical surfaces are respectively R ₂ and R ₃ , the center of the ball is O; the outer surface of the double-sided integrated star sleeve module is evenly distributed with raceways equal to the number of outer steel balls, and the radius of the centerline of the raceway trajectory is r ₁ , the center of the circle is O ₂ , and there is an eccentricity e ₁ between it and O; the inner surface of the double-sided integrated star sleeve module is evenly distributed with raceways equal to the number of inner steel balls, and the radius of the centerline of the raceway track is is r ₂ , the center of the circle is O ₃ , and there is an eccentricity e ₂ between it and O; the ball socket end cover is coaxially fixed with the lower end of the lower shell of the double-sided integrated star sleeve through the end cover set screw; The lower end surface of the side integrated star sleeve module has a ball socket, which is coaxially distributed on the end cover of the ball socket and the lower shell of the double-sided integrated star sleeve.

Further, the outer surface of the star sleeve is spherical, its radius is R ₄ , and the center of the ball is O; the outer surface of the star sleeve is evenly distributed with raceways equal to the number of inner steel balls, and its rolling The radius of the track center line is r ₂ , the center of the circle is O ₄ , and there is an eccentricity e ₂ between it and O.

Further, the configuration of the swing angle coordination mechanism module is S-(S+C)-S _G , specifically including an upper swing link, a lower swing link and a sliding ball head; the main bodies of the upper swing link and the lower swing link are both Cylindrical and one end is a ball head; the cylindrical ends of the upper swing rod and the lower swing rod are connected as a whole through threads; the outer surface of the sliding ball head is a spherical surface, and a round hole is provided through the center of the ball, and the diameter of the round hole is It is equal to the shaft diameter of the upper swing rod; the sliding ball head is matched with the cylindrical rod cylinder pair C of the upper swing rod through the round hole; the ball end of the upper swing rod is connected with the ball socket spherical surface pair S cooperation; the sliding ball head is matched with the ball-socket spherical pair S on the lower end surface of the double-sided integrated star sleeve module; the ball end of the lower swing rod is matched with the cylindrical slideway ball groove pair inside the lower shell of the bell-shaped shell module _SG cooperates.

Further, the inner and outer surfaces of the outer cage are spherical, the radii of the spheres are _R2 and _R1 respectively, and the center of the sphere is O; the inner and outer surfaces of the inner cage are both spherical, and the radii of the spheres are R ₄ and R ₃ , the center of the sphere is O.

Further, the number m of outer layer steel balls and the number n of inner layer steel balls are both 3-6.

Compared with the prior art, the present invention has the following beneficial effects:

1. The working angle of the existing ball cage universal joint is usually up to 47°. The present invention greatly increases the limit working angle of the ball cage type constant velocity universal joint, which can further reduce the turning radius of the vehicle and widen it. Application scenarios of ball cage constant velocity couplings.

2. In the present invention, when the steel ball rolls, the trajectory of the center of the steel ball is a single arc. Compared with other composite tracks with multiple arcs and straight lines, the trajectory shape is simple, the processing cost is lower, and the detection cost is also lower. .

Description of drawings

Fig. 1 is the overall structure schematic diagram of the present invention;

Fig. 2 is a side view half-section structure schematic diagram of the present invention;

Fig. 3 is a schematic diagram of the overall structure of the bell-shaped shell module in the present invention;

Fig. 4 is a schematic diagram of a side view half-section structure of a bell-shaped shell module in the present invention;

5 is a schematic diagram of the overall structure of the double-sided integrated star sleeve module in the present invention;

Fig. 6 is a schematic diagram of the structural parameters of the double-sided integrated star sleeve module in the present invention;

Fig. 7 is the structural representation of star sleeve among the present invention;

Fig. 8 is a structural schematic diagram of the swing angle coordination mechanism module in the present invention;

Fig. 9 is a schematic structural view of the outer layer cage and the inner layer cage in the present invention.

Wherein, reference numerals: 1-input shaft; 2-bell-shaped shell module; 21-upper shell of bell-shaped shell module; 22-lower shell of bell-shaped shell module; 23-set screw; 3-outer cage ;4-outer steel ball; 5-double-sided integrated star sleeve module; 51-double-sided integrated star-shaped sleeve lower housing; 52-double-sided integrated star-shaped sleeve upper housing; 53-housing set screws; 54-ball socket end cover; 55-end cover set screw; 6-inner layer cage; 7-inner layer steel ball; 8-star sleeve; 9-output shaft; 10-thrust spring; 11-swing angle coordination Mechanism module; 111-upper swing link; 112-lower swing link; 113-sliding ball head.

Detailed ways

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

It should be noted that in the description of the present invention, it should be noted that the terms "upper", "lower", "top", "bottom", "side", "other side", "left", " The orientation or positional relationship indicated by "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, and does not mean that the device or element must have a specific orientation, be configured in a specific orientation, and operate.

Referring to accompanying drawings 1 and 2, the specific structure of an embodiment of a cage-type constant velocity universal joint with a large working angle of 60° proposed by the present invention is given. The universal joint includes an input shaft 1, a bell-shaped housing module 2, an outer layer cage 3, an outer layer steel ball 4, a double-sided integrated star sleeve module 5, an inner layer cage 6, an inner layer steel ball 7, a star Shape sleeve 8, output shaft 9, thrust spring 10 and swing angle coordination mechanism module 11.

The upper end of the input shaft 1 is coaxially fixed to the lower end of the bell-shaped housing module 2; a cylindrical slideway is coaxially arranged inside the lower end of the bell-shaped housing module 2; the bell-shaped housing module 2 is integrated with both sides The inner and outer surfaces of the star-shaped sleeve module 5 are both spherical; the double-sided integrated star-shaped sleeve module 5 is correspondingly arranged on the inner side of the upper area of the bell-shaped housing module 2; the inner side of the bell-shaped housing module 2 is integrated with both sides The outer sides of the star sleeve module 5 respectively correspond to the same number of raceways as the number of outer steel balls 4; the number m of the outer steel balls 4 can generally be set to 3-6. In this embodiment, The number m of the outer steel balls 4 is set to 6.

The inner surface of the outer layer cage 3 cooperates with the outer surface spherical pair of the double-sided integrated star sleeve module 5; the outer surface of the outer layer cage 3 cooperates with the inner surface spherical pair of the bell-shaped shell module 2; The outer layer steel balls 4 are respectively placed in the corresponding paired raceways of the bell-shaped shell module 2 and the double-sided integrated star sleeve module 5, and their movement along the direction of the raceways is restricted by the window of the outer layer cage 3; .

The outer surface of the star sleeve 8 is a spherical surface corresponding to the inner surface of the double-sided integrated star sleeve module 5, and its lower end surface is provided with a coaxial ball socket, and the upper end surface is provided with a coaxial cylindrical groove; the star sleeve 8 is correspondingly arranged on the inner side of the double-sided integrated star-shaped sleeve module 5; the inner side of the double-sided integrated star-shaped sleeve module 5 corresponds to the outer side of the star-shaped sleeve 8. Raceway; the number n of the inner steel balls 7 can generally be set to 3-6, and in this embodiment, the number n of the inner steel balls 7 is set to 6.

The inner surface of the inner layer cage 6 cooperates with the outer surface spherical pair of the star sleeve 8; the outer surface of the inner layer cage 6 cooperates with the inner surface of the double-sided integrated star sleeve module 5 with a spherical pair; the The inner layer steel balls 7 are respectively placed in the paired raceways of the double-sided integrated star sleeve module 5 and the star sleeve 8, and their movement along the raceway direction is restricted by the window of the inner layer cage 6.

The lower end of the output shaft 9 is coaxially connected with the cylindrical groove on the upper end surface of the star sleeve 8 through splines.

The upper end of the swing angle coordinating mechanism module 11 cooperates with the double-sided integrated star sleeve module 5 and the spherical pair of the star sleeve 8 in turn, and the lower end cooperates with the inner cylindrical slideway ball groove pair at the lower end of the bell shell module 2;

The thrust spring 10 is arranged in the cylindrical slideway of the bell-shaped housing module 2, its lower end is in contact with the bottom surface of the cylindrical slideway, and its upper end is in contact with the lower end of the swing angle coordinating mechanism module 11, and the thrust spring 10 always provides a thrust , so that the upper end of the swing angle coordination mechanism module 11 is always in contact with the ball socket on the star sleeve.

Referring to accompanying drawings 3 and 4, the bell-shaped housing module 2 comprises a bell-shaped housing module upper housing 21, a bell-shaped housing module lower housing 22 and set screws 23; the bell-shaped housing module lower housing 22 is a bell Type structure, the upper housing 21 of the bell-shaped housing module has a ring structure; the upper housing 21 of the bell-shaped housing module is fixedly connected to the large-diameter end of the lower housing 22 of the bell-shaped housing module through a set screw 23, forming a bell Shaped shell module; the lower end of the lower shell 22 of the bell-shaped shell module is coaxially fixedly connected with the upper end of the input shaft 1; A cylindrical slideway is arranged coaxially; the inner surface of the upper area of the lower housing 22 of the bell-shaped shell module is a spherical surface, the radius of which is R ₁ , and the center of the sphere is O; the inner surface of the upper spherical area of the bell-shaped shell module 2 There are 6 raceways equal in number to the outer layer steel balls 4 evenly distributed on the surface circumference, the radius of the center line of the raceway trajectory is r ₁ , the center of the circle is O ₁ , and there is an eccentricity e ₁ between it and O.

Referring to accompanying drawings 5 and 6, the double-sided integrated star-shaped sleeve module 5 includes a double-sided integrated star-shaped sleeve lower housing 51, a double-sided integrated star-shaped sleeve upper housing 52, a housing set screw 53, and a ball-and-socket end Cover 54 and end cover set screws 55; the double-sided integrated star sleeve lower housing 51 and the double-sided integrated star sleeve upper housing 52 are fixedly connected by housing set screws 53; the double-sided integrated star sleeve The inner and outer surfaces of the cover module 5 are both spherical, the radii of the spheres are _R3 and _R2 respectively, and the center of the sphere is O; The 6 raceways that are equal and correspond to the inner surface raceways of the bell-shaped shell module 2 one by one, the radius of the center line of the raceway trajectory is r ₁ , the center of the circle is O ₂ , and there is an eccentricity e ₁ between them and O; the double The inner surface of the side integrated star sleeve module 5 is evenly distributed with 6 raceways equal to the number of steel balls in the inner layer 7, the radius of the centerline of the raceway trajectory is r ₂ , and the center of the circle is O ₃ , which is eccentric to O distance e ₂ ; the ball socket end cover 54 is coaxially fixed with the lower end surface of the double-sided integrated star sleeve lower housing 51 through the end cover set screw 55; the lower end surface of the double-sided integrated star sleeve module 5 There is a ball socket, and the ball socket is coaxially distributed on the ball socket end cover 54 and the double-sided integrated star sleeve lower housing 51 .

Referring to accompanying drawing 7, the outer surface of described star sleeve 8 is a spherical surface, spherical radius is R ₄ , and the center of sphere is O; The 6 raceways correspond one-to-one to the inner surface raceways of the double-sided integrated star sleeve module 5, the radius of the centerline of the raceway trajectory is r ₂ , the center of the circle is O ₄ , and there is an eccentricity e ₂ between them and O.

Referring to accompanying drawing 8, the configuration of described swing angle coordinating mechanism module 11 is S-(S+C)-S _G , specifically, described swing angle coordinating mechanism module 11 comprises upper swing rod 111, lower swing rod 112 and sliding Ball head 113; the main body of the upper swing rod 111 is cylindrical, and one end is provided with a ball head, and the other end is fixedly connected with the main body of the lower swing rod 112 through a threaded connection; the main body of the lower swing rod 112 is cylindrical , and one end is provided with a ball head, and the other end is fixedly connected with the upper swing rod 111 through a threaded connection; the outer surface of the sliding ball head 113 is a spherical surface, and a round hole is provided through the center of the ball, and the diameter of the round hole is the same as The shaft diameters of the upper swing rod 111 are equal; the sliding ball head 113 cooperates with the cylindrical rod body cylinder pair C of the upper swing rod 111 through the round hole; The ball-and-socket spherical pair S cooperates; the sliding ball head 113 cooperates with the ball-and-socket spherical pair S on the lower end surface of the double-sided integrated star sleeve module 5; The cylindrical slideway ball groove pair S _G fits.

Referring to accompanying drawing 9, the inner and outer surfaces of the outer cage 3 are both spherical, the radii of the spheres are _R2 and _R1 respectively, and the center of the sphere is O; the inner and outer surfaces of the inner cage 6 are both spherical, and the spherical The radii are R ₄ and R ₃ , and the center of the sphere is O; considering the convenience of installation, the outer cage 3 and the inner cage 6 are connected by assembling through the reserved slots.

Principle of action of the present invention is as follows:

When the input shaft 1 is fixed, a certain direction is selected arbitrarily to make the output shaft 9 swing. At this time, the swing angle of the output shaft 9 is set to be β ₃ . The swing of the output shaft 9 makes the spatial position of the ball socket on the star sleeve 8 change. Change, and then drive the spatial position of the upper swing rod 111 and the lower swing rod 112 of the swing angle coordination mechanism module 11 to change, because the distance from the center of the ball cage 113 to the center O of the sliding ball head remains unchanged, when the swing rod coordination mechanism module 11 When the spatial position changes, the sliding ball head 113 must slide on the upper swing rod 111 adaptively, and then drive the double-sided integrated star sleeve module 5 to swing β ₁ relative to the bell-shaped shell module 2. At this time, the output shaft 9 is opposite to the double-sided The swing angle of the integrated star sleeve module 5 is β ₂ , and β ₁ , β ₂ , and β ₃ satisfy β ₁ +β ₂ =β ₃ . It can be seen that the essential principle of the present invention is to couple the two ball cage universal joints into an integrated design, and to achieve a larger total swing angle by superimposing the swing angles of the two ball cage mechanisms, and to introduce the swing angle The coordinating mechanism module 11 controls the contribution ratio of the respective swing angles of the two cages to the total swing angle.

In a conventional ball cage, the height of the edge of the bell-shaped shell determines the maximum swing angle that the output shaft can reach. If you want to obtain a larger output shaft deflection angle, it is necessary to reduce the height of the edge of the bell-shaped shell, but when the bell-shaped When the height of the edge of the shell is too low, the steel ball that transmits the movement will be separated from the bell-shaped shell, so the height of the bell-shaped shell cannot be too low. This contradictory relationship determines the swing angle of the existing ball cage type universal joint. cannot grow infinitely. In practical applications, the maximum working angle of the ball cage universal joint often does not exceed 47 degrees. In the ball cage universal joint configuration proposed by the present invention, because the overall swing angle _β3 is realized by the superposition of two swing angles _β1 and _β2 , the swing angle β of the two-sided integrated star sleeve module 5 relative to the bell-shaped shell module 2 ₁ may not take a larger value, which allows the edge height of the bell-shaped housing to take a smaller value, so that the output shaft 9 can achieve a larger angle of deflection.

In order to further demonstrate the feasibility of the present invention, Fig. 2 shows the pose of the mechanism and its half-sectional view when the limit swing angle is 60°.

Matters not covered in the present invention are known technologies.

The above-mentioned embodiments are only descriptions of preferred implementations of the present invention, and are not intended to limit the scope of the present invention. All such modifications and improvements should fall within the scope of protection defined by the claims of the present invention.

Claims (3)

1. A rzeppa constant velocity joint having a large working angle of 60 °, characterized in that: the universal joint comprises an input shaft, a bell housing module, an outer retainer, an outer steel ball, a double-side integrated star cover module, an inner retainer, an inner steel ball, a star cover, an output shaft, a thrust spring and a swing angle coordination mechanism module;

the input shaft is coaxially and fixedly connected with the lower end of the bell housing module; a cylindrical slideway is coaxially arranged in the lower end of the bell housing module; the inner surface and the outer surface of the bell housing module and the inner surface of the double-side integrated star cover module are spherical, and the double-side integrated star cover module is correspondingly arranged on the inner side of the bell housing module; the inner side of the bell housing module and the outer side of the double-side integrated star cover module are respectively and circumferentially distributed with raceways with the same number as the outer steel balls;

the inner surface of the outer retainer is matched with the spherical pair of the outer surface of the double-side integrated star cover module; the outer surface of the outer retainer is matched with the spherical pair of the inner surface of the bell housing module; the outer layer steel balls are respectively arranged in the paired raceways and the window of the outer layer retainer limits the movement of the outer layer steel balls along the raceways;

the outer surface of the star-shaped sleeve is a sphere, the lower end surface of the star-shaped sleeve is provided with a coaxial ball socket, and the upper end surface of the star-shaped sleeve is provided with a coaxial cylinder groove; the star cover is correspondingly arranged on the inner side of the double-side integrated star cover module; the inner sides of the double-side integrated star sleeve modules and the outer sides of the star sleeves are respectively and circumferentially distributed with raceways with the same number as the steel balls on the inner layer correspondingly;

the inner surface of the inner retainer is matched with the spherical pair of the outer surface of the star-shaped sleeve; the outer surface of the inner layer retainer is matched with the inner surface of the double-side integrated star cover module through a spherical pair; the inner layer steel balls are respectively arranged in the paired raceways and are limited by the window body of the inner layer retainer to move along the raceways;

the output shaft is coaxially and fixedly connected with the cylindrical groove on the upper end surface of the star sleeve through a spline;

the upper end of the swing angle coordination mechanism module is sequentially matched with the double-side integrated star cover module and the star cover spherical pair, and the lower end of the swing angle coordination mechanism module is matched with the cylindrical slideway spherical groove pair in the lower end of the bell housing module;

the thrust spring is arranged in the cylindrical slideway of the bell housing module, the lower end of the thrust spring is contacted with the bottom surface of the cylindrical slideway, and the upper end of the thrust spring is contacted with the lower end of the swing angle coordination mechanism module, so that the thrust spring always provides a thrust force, and the upper end of the swing angle coordination mechanism module is always contacted with the ball socket on the star cover;

the bell housing module comprises a bell housing module upper shell, a bell housing module lower shell and a set screw; the lower shell of the bell housing module is fixedly connected with the upper shell of the bell housing module through a set screw to form the bell housing module; the lower end of the lower shell of the bell housing module is coaxially and fixedly connected with the input shaft; a cylindrical slideway is coaxially arranged in the end handle of the lower shell of the bell housing module; the inner surface of the upper region of the lower shell of the bell housing module is spherical, and the radius is R ₁ The sphere center is O; the inner surface circumference of the upper area of the bell housing module is uniformly distributed with raceways with the same number as the outer layer steel balls, and the radius of the center line of the raceways is r ₁ The circle center is O ₁ It has an eccentricity e with O ₁ ；

The double-side integrated star cover module comprises a double-side integrated star cover lower shell, a double-side integrated star cover upper shell, a shell set screw, a ball socket end cover and an end cover set screw; the double-side integrated star-shaped sleeve lower shell is fixedly connected with the double-side integrated star-shaped sleeve upper shell through a shell set screw; the inner and outer surfaces of the double-side integrated star cover module are spherical surfaces, and the spherical radii are R respectively ₂ And R is ₃ The sphere centers are O; the outer surface circumference of the double-side integrated star cover module is uniformly distributed with raceways with the same number as the outer layer steel balls, and the radius of the center line of the raceways is r ₁ The circle center is O ₂ It has an eccentricity e with O ₁ The method comprises the steps of carrying out a first treatment on the surface of the The inner surface circumference of the double-side integrated star cover module is uniformly distributed with raceways with the same number as the steel balls in the inner layer, and the radius of the center line of the raceways is r ₂ The circle center is O ₃ It has an eccentricity e with O ₂ The method comprises the steps of carrying out a first treatment on the surface of the The ball socket end cover is coaxially and fixedly connected with the lower end of the double-side integrated star-shaped sleeve lower shell through an end cover set screw; the lower end face of the double-side integrated star cover module is provided with a ball socket which is coaxially distributed on the end cover of the ball socketIs integrated with the double-side star-shaped sleeve lower shell;

the outer surface of the star-shaped sleeve is a sphere with a radius R ₄ The sphere center is O; the outer surface circumference of the star-shaped sleeve is uniformly distributed with raceways with the same number as the inner steel balls, and the radius of the center line of the raceways is r ₂ The circle center is O ₄ It has an eccentricity e with O ₂ ；

The swing angle coordination mechanism module is formed by S- (S+C) -S _G The device specifically comprises an upper swing rod, a lower swing rod and a sliding ball head; the main bodies of the upper swing rod and the lower swing rod are cylindrical, and one ends of the upper swing rod and the lower swing rod are ball heads; cylindrical ends of the upper swing rod and the lower swing rod are connected into a whole through threads; the outer surface of the sliding ball head is a spherical surface, a round hole is formed in the center of the ball passing center, and the diameter of the round hole is equal to the shaft diameter of the upper swing rod; the sliding ball head is matched with a cylindrical rod body cylindrical pair C of the upper swing rod through the round hole; the ball end of the upper swing rod is matched with the ball socket spherical pair S at the lower end face of the star sleeve; the sliding ball head is matched with a ball socket spherical pair S on the lower end surface of the double-side integrated star cover module; the ball head end of the lower swing rod and the cylindrical slideway ball groove pair S in the lower shell of the bell housing module _G Matching.

2. A rzeppa universal joint with a large working angle of 60 ° according to claim 1, characterized in that: the inner surface and the outer surface of the outer retainer are spherical surfaces, and the spherical radii are R respectively ₂ And R is ₁ The sphere centers are O; the inner surface and the outer surface of the inner layer retainer are spherical surfaces, and the spherical radii are R respectively ₄ And R is ₃ The sphere centers are all O.

3. A rzeppa universal joint with a large working angle of 60 ° according to claim 1, characterized in that: the number m of the outer layer steel balls and the number n of the inner layer steel balls are 3-6.

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