CN115523240A - Rzeppa constant velocity joint having a large working angle of 60 degrees - Google Patents
Rzeppa constant velocity joint having a large working angle of 60 degrees Download PDFInfo
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- CN115523240A CN115523240A CN202210708617.3A CN202210708617A CN115523240A CN 115523240 A CN115523240 A CN 115523240A CN 202210708617 A CN202210708617 A CN 202210708617A CN 115523240 A CN115523240 A CN 115523240A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
- F16D3/20—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
- F16D3/22—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts
- F16D3/223—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
- F16D3/20—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
- F16D3/22—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts
- F16D3/223—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts
- F16D3/224—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts the groove centre-lines in each coupling part lying on a sphere
- F16D3/2245—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts the groove centre-lines in each coupling part lying on a sphere where the groove centres are offset from the joint centre
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
- F16D3/20—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
- F16D3/22—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts
- F16D3/223—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts
- F16D2003/22303—Details of ball cages
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
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-shaped shell module, an outer layer retainer, a plurality of outer layer steel balls, a bilateral integrated star sleeve module, an inner layer retainer, a plurality of inner layer steel balls, a star sleeve, an output shaft, a thrust spring and a pivot angle coordination mechanism module, wherein the bell-shaped shell module is arranged on the input shaft; 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 the outer surfaces of the two-side integrated star sleeve module and the spherical pair of the inner surface of the bell housing module; the inner surface and the outer surface of the inner retainer are respectively matched with the outer surface of the star-shaped sleeve and the inner surface spherical pair of the integrated star-shaped sleeve module on the two sides; the outer layer steel ball and the inner layer steel ball are respectively distributed in the corresponding roller paths to transmit motion; the output shaft is fixedly connected with the star-shaped sleeve; the swing angle coordination mechanism module is responsible for adjusting the swing angle of the double-side integrated star sleeve module relative to the bell housing. Compared with the existing ball cage constant velocity universal joint, the invention can further reduce the turning radius of the vehicle and widen the application scene of the ball cage constant velocity coupling.
Description
Technical Field
The invention relates to the technical field of rigid constant velocity couplings, in particular to a ball-type constant velocity universal joint with a large working angle of 60 degrees.
Background
The rzeppa constant velocity joint is commonly used for transmitting constant velocity motion between crossed shafts, and is one of the most widely used constant velocity couplings at present. The advantage of this is the axial structure, the disadvantage of the small angle of the working angle of the transmission, usually at most 47 °, which places restrictions on its range of application.
In the existing ball-type constant velocity universal joint, the height of the edge of an outer shell determines the maximum swing angle which can be reached by an output shaft, if a larger output shaft deflection angle is obtained, the height of the edge of the outer shell is required to be reduced, but when the height of the edge of the outer shell is too low, a steel ball for transferring motion is separated from the outer shell, so that the height of the edge of the outer shell cannot be too low. This contradictory relationship is the main reason for limiting the further increase in the tilt angle of the conventional ball cage constant velocity universal joint. When the actual working condition that a larger deflection angle is needed exists, the existing ball cage universal joint is often not used because the deflection angle is smaller.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide a rzeppa constant velocity joint having a large working angle of 60 °, which can effectively overcome the problems of insufficient pivot angle of the conventional rzeppa joint, etc.
The technical scheme adopted by the invention is as follows:
the invention provides a ball cage type constant velocity universal joint with a large working angle of 60 degrees, which comprises an input shaft, a bell-shaped shell module, an outer-layer retainer, an outer-layer steel ball, a bilateral integrated star sleeve module, an inner-layer retainer, an inner-layer steel ball, a star sleeve, an output shaft, a thrust spring and a swing angle coordination mechanism module, wherein the bell-shaped shell module is arranged on the outer layer of the input shaft;
the input shaft is coaxially and fixedly connected with the lower end of the bell housing module; a cylindrical slide way is coaxially arranged inside the lower end of the bell-shaped shell module; the inner surfaces and the outer surfaces of the bell-shaped shell module and the double-side integrated star sleeve module are spherical surfaces, and the double-side integrated star sleeve module is correspondingly arranged on the inner side of the bell-shaped shell module; the inner side of the bell-shaped shell module and the outer side of the two-side integrated star sleeve module are respectively and uniformly distributed with raceways which are equal to the outer layer steel balls in number in a corresponding circumference manner;
the inner surface of the outer retainer is matched with the outer surface spherical pair of the two-side integrated star sleeve module; the outer surface of the outer retainer is matched with the spherical pair on the inner surface of the bell-shaped shell module; the outer layer steel balls are respectively arranged in the paired roller paths and are limited by a window body of the outer layer retainer to move along the roller paths;
the outer surface of the star-shaped sleeve is a spherical surface, 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 cylindrical groove; the star sleeves are correspondingly arranged on the inner sides of the two-side integrated star sleeve modules; the inner sides of the two-side integrated star-shaped sleeve modules and the outer sides of the star-shaped sleeves are respectively and uniformly distributed with raceways which are equal to the number of the steel balls in the inner layer in number and correspond to the circumferences;
the inner surface of the inner retainer is matched with the outer surface spherical pair of the star-shaped sleeve; the outer surface of the inner retainer is matched with the inner surfaces of the two-side integrated star sleeve modules through a spherical pair; the inner steel balls are respectively arranged in the paired roller paths and are limited by the window body of the inner retainer to move along the roller paths;
the output shaft is coaxially and fixedly connected with the cylindrical groove on the upper end surface of the star-shaped sleeve through a spline;
the upper end of the swing angle coordination mechanism module is sequentially matched with the double-side integrated star sleeve module and the star sleeve 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-shaped shell module, the lower end of the thrust spring is contacted with the bottom surface of the cylindrical slideway, the upper end of the thrust spring is contacted with the lower end of the swing angle coordination mechanism module, and the thrust spring always provides a thrust force to enable the upper end of the swing angle coordination mechanism module to be always contacted with the ball socket on the star-shaped sleeve.
Further, 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-shaped shell module is fixedly connected with the upper shell of the bell-shaped shell module through a set screw to form a bell-shaped shell module; the lower end of the lower shell of the bell-shaped shell module is coaxially and fixedly connected with the input shaft; a cylindrical slide way is coaxially arranged inside the lower shell end handle of the bell-shaped shell module; the inner surface of the upper area of the lower shell of the bell-shaped shell module is a spherical surface with the radius R 1 The sphere center is O; the bell housingThe inner surface of the upper area of the module is evenly distributed with raceways the number of which is equal to that of the outer steel balls, and the radius of the central line of the raceway track is r 1 Center of circle is O 1 With eccentricity e from O 1 。
Further, the double-side integrated star sleeve module comprises a double-side integrated star sleeve lower shell, a double-side integrated star sleeve upper shell, shell fastening screws, ball socket end covers and end cover fastening screws; the lower shell of the double-side integrated star-shaped sleeve is fixedly connected with the upper shell of the double-side integrated star-shaped sleeve through a shell fastening screw; the inner surface and the outer surface of the double-side integrated star-shaped sleeve module are spherical surfaces, and the radiuses of the spherical surfaces are R respectively 2 And R 3 The spherical centers are all O; the outer surface circumference of the two-side integrated star-shaped sleeve module is uniformly provided with raceways the number of which is equal to that of the outer steel balls, and the radius of the central line of the raceway track is r 1 Center of circle is O 2 With eccentricity e from O 1 (ii) a The inner surface circumference of the two-side integrated star-shaped sleeve module is uniformly provided with raceways the number of which is equal to that of the inner steel balls, and the radius of the central line of the raceway track is r 2 Center of circle is O 3 Having an eccentricity e with O 2 (ii) a 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 sleeve module is provided with a ball socket, and the ball sockets are coaxially distributed on a ball socket end cover and the double-side integrated star sleeve lower shell.
Furthermore, the outer surface of the star-shaped sleeve is spherical and has a radius R 4 The sphere center is O; the outer surface of the star-shaped sleeve is evenly distributed with raceways which are equal to the inner layer steel balls in number, and the radius of the track center line of the raceway is r 2 Center of circle is O 4 With eccentricity e from O 2 。
Furthermore, the configuration of the swing angle coordination mechanism module is S- (S + C) -S G The device 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; the 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 arranged through the center of the spherical surface, and the diameter of the round hole is equal to that of the upper swing rodThe shaft diameters are equal; 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 head end of the upper swing rod is matched with the ball socket spherical pair S on the lower end face of the star-shaped sleeve; the sliding ball head is matched with a ball socket spherical pair S on the lower end surface of the integrated star-shaped sleeve module on the two sides; the ball head end of the lower swing rod and a cylindrical slideway ball groove pair S in the lower shell of the bell-shaped shell module G And (4) matching.
Furthermore, the inner surface and the outer surface of the outer retainer are spherical surfaces, and the radiuses of the spherical surfaces are R respectively 2 And R 1 The spherical centers are all O; the inner surface and the outer surface of the inner retainer are spherical surfaces, and the radiuses of the spherical surfaces are R respectively 4 And R 3 The spherical centers are all O.
Furthermore, the number m of the outer layer steel balls and the number n of the inner layer steel balls are both 3-6.
Compared with the prior art, the invention has the following beneficial effects:
1. the maximum working angle of the conventional ball cage universal joint is 47 degrees, the maximum working angle of the ball cage constant velocity universal joint is greatly increased, the turning radius of a vehicle can be further reduced, and the application scene of the ball cage constant velocity coupling is widened.
2. In the invention, the tracks of the centers of the steel balls are single-section arcs when the steel balls roll, and compared with other multi-arc and linear composite tracks, the track has the advantages of simple shape, lower processing cost and lower detection cost.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a side view semi-sectional schematic of the present invention;
FIG. 3 is a schematic view of the overall construction of the bell housing module of the present invention;
FIG. 4 is a side view, semi-sectional, schematic view of a bell housing module of the present invention;
FIG. 5 is a schematic diagram of the overall structure of a double-sided integrated inner spider module according to the present invention;
FIG. 6 is a schematic diagram of structural parameters of a double-sided integrated inner race module of the present invention;
FIG. 7 is a schematic view of the construction of the inner race of the present invention;
FIG. 8 is a schematic structural diagram of a module of the swing angle coordinating mechanism of the present invention;
fig. 9 is a schematic structural view of the outer retainer and the inner retainer of the present invention.
Wherein, the reference numbers: 1-an input shaft; 2-a bell housing module; 21-a bell housing module upper housing; 22-bell housing module lower housing; 23-set screws; 3-outer retainer; 4-outer steel ball; 5-integrating star-shaped sleeve modules on two sides; 51-double-sided integrated star-shaped sleeve lower shell; 52-double-side integrated star-shaped sleeve upper shell; 53-housing set screws; 54-ball and socket end cap; 55-end cap set screw; 6-inner retainer; 7-inner layer steel ball; 8-star-shaped sleeve; 9-an output shaft; 10-a thrust spring; 11-a swing angle coordination mechanism module; 111-upper swing link; 112-lower swing link; 113-sliding ball head.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
It should be noted that in the description of the present invention, it should be noted that the terms "upper", "lower", "top", "bottom", "one side", "the other side", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of describing the present invention and simplifying the description, and do not mean that a device or an element must have a specific orientation, be configured and operated in a specific orientation.
Referring to fig. 1 and 2, there is shown a concrete structure of an embodiment of a birfield type constant velocity joint having a large operating angle of 60 ° according to the present invention. The universal joint comprises an input shaft 1, a bell housing module 2, an outer retainer 3, an outer steel ball 4, a double-side integrated star sleeve module 5, an inner retainer 6, an inner steel ball 7, a star sleeve 8, an output shaft 9, a thrust spring 10 and a tilt angle coordination mechanism module 11.
The upper end of the input shaft 1 is coaxially and fixedly connected with the lower end of the bell housing module 2; a cylindrical slide way is coaxially arranged inside the lower end of the bell housing module 2; the inner and outer surfaces of the bell housing module 2 and the double-side integrated star sleeve module 5 are spherical surfaces; the double-sided integrated inner spider modules 5 are correspondingly arranged on the inner side of the upper area of the bell housing module 2; raceways with the same number as the outer steel balls 4 are uniformly distributed on the corresponding circumferences of the inner side of the outer shell module 2 and the outer sides of the two-side integrated star sleeve modules 5; the number m of the outer steel balls 4 can be set to 3-6, and in this embodiment, the number m of the outer steel balls 4 is set to 6.
The inner surface of the outer retainer 3 is matched with the outer surface spherical pair of the double-side integrated star sleeve module 5; the outer surface of the outer retainer 3 is matched with the inner surface spherical pair of the outer bell housing module 2; the outer layer steel balls 4 are respectively arranged in corresponding paired roller paths on the outer shell module 2 and the bilateral integrated star sleeve module 5, and the movement of the outer layer steel balls along the roller paths is limited by a window body of the outer layer retainer 3; .
The outer surface of the star-shaped sleeve 8 is a spherical surface corresponding to the inner surface of the double-side integrated star-shaped sleeve module 5, 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 cylindrical groove; the star sleeve 8 is correspondingly arranged on the inner side of the double-side integrated star sleeve module 5; the inner sides of the two-side integrated star-shaped sleeve modules 5 and the outer sides of the star-shaped sleeves 8 are respectively and correspondingly provided with raceways which are equal to the inner-layer steel balls 7 in number; the number n of the inner layer steel balls 7 can be generally set to 3-6, and in this embodiment, the number n of the inner layer steel balls 7 is set to 6.
The inner surface of the inner retainer 6 is matched with the outer surface spherical pair of the star-shaped sleeve 8; the outer surface of the inner retainer 6 is matched with the inner surfaces of the double-side integrated star sleeve modules 5 through a spherical pair; the inner layer steel balls 7 are respectively arranged in corresponding pairs of raceways on the double-side integrated star sleeve module 5 and the star sleeve 8, and the movement of the inner layer steel balls along the direction of the raceways is limited by a window body of the inner layer retainer 6.
The lower end of the output shaft 9 is coaxially and fixedly connected with the cylindrical groove in the upper end face of the star-shaped sleeve 8 through a spline.
The upper end of the swing angle coordination mechanism module 11 is sequentially matched with the bilateral integrated inner star sleeve module 5 and the inner star sleeve 8 spherical pair, and the lower end of the swing angle coordination mechanism module is matched with the inner cylindrical slideway spherical groove pair at the lower end of the outer bell housing module 2;
the thrust spring 10 is arranged in the cylindrical slideway of the outer shell module 2, the lower end of the thrust spring is contacted with the bottom surface of the cylindrical slideway, the upper end of the thrust spring is contacted with the lower end of the swing angle coordination mechanism module 11, and the thrust spring 10 always provides a thrust force to enable the upper end of the swing angle coordination mechanism module 11 to be always contacted with a ball socket on the star-shaped sleeve.
Referring to fig. 3 and 4, the bell housing module 2 includes a bell housing module upper casing 21, a bell housing module lower casing 22, and set screws 23; the bell housing module lower shell 22 is of a bell-shaped structure, and the bell housing module upper shell 21 is of an annular structure; the upper bell housing module shell 21 is fixedly connected to the large-diameter end of the lower bell housing module shell 22 through a set screw 23 to form a bell housing module; the lower end of the lower shell 22 of the bell-shaped shell module is coaxially and fixedly connected with the upper end of the input shaft 1; the small-diameter end of the lower shell 22 of the bell-shaped shell module is coaxially provided with an end handle, and a cylindrical slide way is coaxially arranged inside the handle; the inner surface of the upper region of the lower housing 22 of the bell housing module is spherical and has a radius R 1 The sphere center is O; 6 roller paths with the same number as the outer layer steel balls 4 are evenly distributed on the inner surface of the spherical area at the upper part of the outer shell module 2, and the radius of the center line of the roller path is r 1 Center of circle is O 1 With eccentricity e from O 1 。
Referring to fig. 5 and 6, the double-sided integrated inner star housing module 5 includes a double-sided integrated inner star housing lower shell 51, a double-sided integrated inner star housing upper shell 52, a housing set screw 53, a ball and socket end cap 54, and an end cap set screw 55; the double-side integrated star-shaped sleeve lower shell 51 is fixedly connected with the double-side integrated star-shaped sleeve upper shell 52 through a shell fastening screw 53; the inner surface and the outer surface of the double-side integrated star-shaped sleeve module 5 are spherical surfaces, and the radiuses of the spherical surfaces are R respectively 3 And R 2 The spherical centers are all O; the outer surface circumference of the two-side integrated star-shaped sleeve module 5 is uniformly distributed with the same number of steel balls 4 as the outer layer and the same number as the outer layer6 raceways corresponding to the raceways on the inner surface of the bell-shaped shell module 2 one by one, wherein the radius of the central line of the raceway track is r 1 Center of circle is O 2 With eccentricity e from O 1 (ii) a 6 roller paths with the number equal to 7 of the steel balls in the inner layer are uniformly distributed on the circumference of the inner surface of the double-side integrated star-shaped sleeve module 5, and the radius of the center line of the roller path is r 2 Center of circle is O 3 With eccentricity e from O 2 (ii) a The ball socket end cover 54 is coaxially and fixedly connected with the lower end face of the double-side integrated star-shaped sleeve lower shell 51 through an end cover set screw 55; the lower end face of the double-side integrated star-shaped sleeve module 5 is provided with a ball socket which is coaxially distributed on a ball socket end cover 54 and the double-side integrated star-shaped sleeve lower shell 51.
Referring to fig. 7, the outer surface of the inner race 8 is spherical with a radius R 4 The sphere center is O; 6 roller paths which are equal to the inner layer steel balls 7 in number and correspond to the roller paths on the inner surfaces of the two-side integrated star sleeve modules 5 one by one are uniformly distributed on the circumference of the outer surface of the star sleeve 8, and the radius of the center line of the roller path is r 2 Center of circle is O 4 With eccentricity e from O 2 。
Referring to FIG. 8, the configuration of the swing angle coordination mechanism module 11 is S- (S + C) -S G Specifically, the swing angle coordination mechanism module 11 includes an upper swing link 111, a lower swing link 112 and a sliding ball 113; the main body of the upper swing rod 111 is cylindrical, one end of the upper swing rod is provided with a ball head, and the other end of the upper swing rod is fixedly connected with the main body of the lower swing rod 112 into a whole through threaded connection; the main body of the lower swing rod 112 is cylindrical, and one end of the lower swing rod is provided with a ball head, while the other end is fixedly connected with the upper swing rod 111 into a whole through threaded connection; the outer surface of the sliding ball head 113 is a spherical surface, a round hole is formed through the center of the sphere, and the diameter of the round hole is equal to the diameter of the shaft of the upper swing rod 111; the sliding ball head 113 is matched with the cylindrical rod body cylindrical pair C of the upper swing rod 111 through the round hole; the ball head end of the upper swing rod 111 is matched with a ball socket spherical pair S on the lower end face of the star-shaped sleeve 8; the sliding ball head 113 is matched with a ball socket spherical pair S on the lower end surface of the double-side integrated star-shaped sleeve module 5; the ball end of the lower swing link 112 and the cylindrical slideway ball groove pair S in the lower shell 22 of the bell housing module G And (4) matching.
Referring to fig. 9, the inner and outer surfaces of the outer retainer 3 are spherical surfaces with respective radii R 2 And R 1 The spherical centers are all O; the inner surface and the outer surface of the inner retainer 6 are spherical surfaces, and the radiuses of the spherical surfaces are R respectively 4 And R 3 The spherical centers are all O; considering the installation convenience, the outer retainer 3 and the inner retainer 6 are connected in an assembling mode through reserved notches.
The action principle of the invention is as follows:
when the input shaft 1 is fixed, a certain direction is selected arbitrarily to enable the output shaft 9 to swing, and the swing angle of the output shaft 9 is set to be beta 3 The swing of the output shaft 9 changes the spatial position of the ball socket on the inner race 8, and further drives the spatial positions of the upper swing link 111 and the lower swing link 112 of the swing angle coordination mechanism module 11 to change, because the distance from the ball center of the sliding ball head 113 to the center O of the ball cage is constant all the time, when the spatial position of the swing link coordination mechanism module 11 changes, the sliding ball head 113 must slide on the upper swing link 111 in a self-adaptive manner, and further drives the double-sided integrated inner race module 5 to swing beta relative to the outer race module 2 1 At this time, the swing angle of the output shaft 9 relative to the double-side integrated star-shaped sleeve module 5 is beta 2 ，β 1 、β 2 、β 3 Satisfies beta 1 +β 2 ＝β 3 . It can be seen that the essential principle of the invention is to couple and integrally design two ball cage universal joints, realize a larger total pivot angle by superposing the pivot angles of the two ball cage mechanisms, and introduce the pivot angle coordination mechanism module 11 to control the contribution ratio of the respective pivot angles of the two ball cages to the total pivot angle.
In a conventional ball cage, the height of the edge of the outer bell shell determines the maximum pivot angle which can be reached by an output shaft, if a larger deflection angle of the output shaft is required, the height of the edge of the outer bell shell is required to be reduced, but when the height of the edge of the outer bell shell is too low, a steel ball for transferring motion is separated from the outer bell shell, so that the height of the outer bell shell cannot be too low, and the contradictory relation determines that the pivot angle of the conventional ball-cage type universal joint cannot be infinitely increased. In practical application, the maximum working angle of the ball cage universal joint does not exceed 47And (4) degree. In the ball cage universal joint configuration provided by the invention, the total swing angle beta is 3 By two swing angles beta 1 And beta 2 The superposition is realized, and the swing angle beta of the star-shaped sleeve module 5 integrated on two sides relative to the bell-shaped shell module 2 1 It is not necessary to take a large value, which allows the rim height of the bell to take a smaller value, thus enabling a larger angle of deflection of the output shaft 9.
To further demonstrate the feasibility of the invention, fig. 2 shows the mechanism pose at a limit swing angle of 60 ° and a half-sectional view thereof.
The invention is not the best known technology.
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.
Claims (7)
1. A birfield constant velocity joint having a large working angle of 60 °, characterized in that: the universal joint comprises an input shaft, a bell-shaped shell module, an outer retainer, an outer steel ball, a bilateral integrated star sleeve module, an inner retainer, an inner steel ball, a star sleeve, 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 slide way is coaxially arranged inside the lower end of the bell-shaped shell module; the inner surfaces and the outer surfaces of the bell-shaped shell module and the double-side integrated star sleeve module are spherical surfaces, and the double-side integrated star sleeve module is correspondingly arranged on the inner side of the bell-shaped shell module; the inner side of the bell-shaped shell module and the outer side of the two-side integrated star sleeve module are respectively and uniformly distributed with raceways which are equal to the outer layer steel balls in number in a corresponding circumference manner;
the inner surface of the outer retainer is matched with the outer surface spherical pair of the two-side integrated star sleeve module; the outer surface of the outer retainer is matched with the spherical pair on the inner surface of the bell-shaped shell module; the outer layer steel balls are respectively arranged in the paired roller paths and are limited by a window body of the outer layer retainer to move along the roller paths;
the outer surface of the star-shaped sleeve is a spherical surface, 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 cylindrical groove; the star-shaped sleeve is correspondingly arranged on the inner side of the two-side integrated star-shaped sleeve module; the inner sides of the two-side integrated star-shaped sleeve modules and the outer sides of the star-shaped sleeves are respectively and uniformly distributed with raceways which are equal to the number of the steel balls in the inner layer in number and correspond to the circumferences;
the inner surface of the inner retainer is matched with the outer surface spherical pair of the star-shaped sleeve; the outer surface of the inner retainer is matched with the inner surfaces of the two-side integrated star sleeve modules through a spherical pair; the inner steel balls are respectively arranged in the paired roller paths and are limited by the window body of the inner retainer to move along the roller paths;
the output shaft is coaxially and fixedly connected with a cylindrical groove on the upper end surface of the star-shaped sleeve through a spline;
the upper end of the swing angle coordination mechanism module is sequentially matched with the double-side integrated star sleeve module and the star sleeve 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-shaped shell module, the lower end of the thrust spring is contacted with the bottom surface of the cylindrical slideway, the upper end of the thrust spring is contacted with the lower end of the swing angle coordination mechanism module, and the thrust spring always provides a thrust force to enable the upper end of the swing angle coordination mechanism module to be always contacted with the ball socket on the star-shaped sleeve.
2. A birfield constant velocity joint having a large working angle of 60 ° as set forth in claim 1, wherein: 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-shaped shell module is fixedly connected with the upper shell of the bell-shaped shell module through a set screw to form a bell-shaped shell module; the lower end of the lower shell of the bell-shaped shell module is coaxially and fixedly connected with the input shaft; a cylindrical slide way is coaxially arranged inside the lower shell end handle of the bell-shaped shell module; the inner surface of the upper area of the lower shell of the bell-shaped shell module is a spherical surface with the radius R 1 The sphere center is O; the inner surface of the upper area of the bell-shaped shell module is evenly distributed withThe number of the ball paths is equal to that of the outer layer steel balls, and the radius of the track center line of the ball paths is r 1 Center of circle is O 1 Having an eccentricity e with O 1 。
3. A birfield constant velocity joint having a large working angle of 60 ° as set forth in claim 2, wherein: the bilateral integrated star-shaped sleeve module comprises a bilateral integrated star-shaped sleeve lower shell, a bilateral integrated star-shaped sleeve upper shell, a shell set screw, a ball socket end cover and an end cover set screw; the lower shell of the double-side integrated star-shaped sleeve is fixedly connected with the upper shell of the double-side integrated star-shaped sleeve through a shell fastening screw; the inner surface and the outer surface of the double-side integrated star-shaped sleeve module are spherical surfaces, and the radiuses of the spherical surfaces are R respectively 2 And R 3 The spherical centers are all O; the outer surface circumference of the two-side integrated star-shaped sleeve module is uniformly provided with raceways the number of which is equal to that of the outer steel balls, and the radius of the central line of the raceway track is r 1 Center of circle is O 2 Having an eccentricity e with O 1 (ii) a The inner surface circumference of the two-side integrated star-shaped sleeve module is uniformly provided with raceways the number of which is equal to that of the inner steel balls, and the radius of the central line of the raceway track is r 2 Center of circle is O 3 With eccentricity e from O 2 (ii) a 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 sleeve module is provided with a ball socket, and the ball sockets are coaxially distributed on a ball socket end cover and a double-side integrated star sleeve lower shell.
4. A birfield constant velocity joint having a large working angle of 60 ° as set forth in claim 3, wherein: the outer surface of the star-shaped sleeve is a spherical surface with the radius of R 4 The sphere center is O; the outer surface of the star-shaped sleeve is evenly distributed with raceways which are equal to the inner layer steel balls in number, and the radius of the track center line of the raceway is r 2 Center of circle is O 4 With eccentricity e from O 2 。
5. A birfield constant velocity joint according to claim 4 having a large operating angle of 60 °,the method is characterized in that: the configuration of the swing angle coordination mechanism module is S- (S + C) -S G The device 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; the 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 sphere, and the diameter of the round hole is equal to the diameter of the shaft 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 head end of the upper swing rod is matched with the ball socket spherical pair S on the lower end face of the star-shaped 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-shaped sleeve module; the ball head end of the lower swing rod and a cylindrical slideway ball groove pair S in the lower shell of the bell-shaped shell module G And (4) matching.
6. A birfield constant velocity joint having a large working angle of 60 ° as set forth in claim 4, wherein: the inner surface and the outer surface of the outer retainer are spherical surfaces, and the radiuses of the spherical surfaces are R respectively 2 And R 1 The spherical centers are all O; the inner surface and the outer surface of the inner retainer are spherical surfaces, and the radiuses of the spherical surfaces are R respectively 4 And R 3 The spherical centers are all O.
7. A birfield constant velocity joint having a large working angle of 60 ° as set forth in claim 1, wherein: the number m of the outer layer steel balls and the number n of the inner layer steel balls are both 3-6.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210708617.3A CN115523240B (en) | 2022-06-21 | 2022-06-21 | Ball cage type constant velocity universal joint with 60-degree large working angle |
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| CN202210708617.3A CN115523240B (en) | 2022-06-21 | 2022-06-21 | Ball cage type constant velocity universal joint with 60-degree large working angle |
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| CN115523240B CN115523240B (en) | 2023-06-20 |
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| CN216430321U (en) * | 2021-11-29 | 2022-05-03 | 耐世特凌云驱动系统(涿州)有限公司 | Wide-angle multi-steel ball rzeppa constant velocity universal joint |
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|---|---|
| CN115523240B (en) | 2023-06-20 |
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