CN217951043U - Universal coupling, universal connecting assembly and cross structure thereof - Google Patents

Abstract

The utility model relates to an universal joint and universal connection subassembly and cross knot structure thereof, fastener through the edge stub axle that sets up runs through, the fastening structure who fixes is carried out at stub both ends is provided, when daily use, it restricts the stub in both sides, the unilateral restriction mode of effectively having avoided current structure can't keep stable in structure's problem in vibrations or reciprocating rotation motion, in addition through the stopping position sleeve that sets up, the extension at universal connecting axle middle part is provided, can make the integral key shaft prolong at the inside portable length of first drive shaft fork, when having avoided daily use, the problem that the integral key shaft drops from the spline groove appears.

Description

Universal coupling, universal connecting assembly and cross structure thereof

Technical Field

The utility model relates to a shaft coupling field, in particular to universal joint and universal coupling assembling and cross knot structure thereof.

Background

The universal coupling utilizes the characteristics of the mechanism thereof, so that two shaft bodies which are not on the same axis and have an included angle between the axes can realize synchronous continuous rotation, the two shaft bodies rotate at the same angular speed and reliably transmit torque and speed, the universal coupling is various in types, the universal coupling is the cross shaft type most commonly used, and the universal coupling is the ball cage type secondly, the universal coupling is widely applied to heavy industry such as hoisting, engineering transportation, mechanical manufacturing and the like, and the universal coupling needs to face some severe environments such as high temperature and floating dust working conditions and the like while being practically applied, so that the universal coupling is required to have strong stability.

The cross shaft part of the existing cross shaft type universal coupling adopts a mode that two short pins and one long pin are matched, a screw penetrates through one of the short pins, then penetrates through the side surface of the long pin in the radial direction, and is screwed into a thread groove on the short pin on the other side to form a cross shaft structure.

Above-mentioned cross axle construction only forms unilateral fixed knot through the mode of two short pins of single screw threaded connection and constructs, under long-time the use, can lead to universal joint vibrations to appear in the junction or when carrying out reciprocal rotary motion, because the screw only is unilateral fixed with being connected of short pin, the condition that the screw becomes flexible and drops appears easily, make long round pin and short pin unable state that maintains the cross axle body, and then lead to the shaft yoke of universal joint both sides and the shaft yoke of drive side both sides to throw off, thereby make overall structure can't carry out the transmission of torque and speed, in addition universal joint both sides shaft yoke and the shaft yoke of drive side both sides throw off, can lead to universal joint to drop, and the shaft yoke rotation track of drive side out of control leads to processing production accident to take place easily.

SUMMERY OF THE UTILITY MODEL

In view of the above shortcomings in the prior art, an object of the present invention is to provide a universal coupling and universal connecting assembly and cross structure thereof, which are used for solving the problem that the screw is easy to loosen and fall off when the cross structure is in a vibration environment or performs reciprocating rotation motion in the prior art.

To achieve the above and other related objects, the present invention provides a cross-shaped structure, comprising,

a long pin;

the two short pins are inserted into the middle positions of the long pins along the radial direction of the long pins, are symmetrically arranged on two sides of the long pins, fasteners penetrating through the short pins along the axial direction of the short pins are arranged between the two short pins, and the long pins and the short pins are connected to form a cross shaft body; and

the limiting sleeve is used for limiting the cross shaft body.

In one embodiment, the long pin and the short pin are cylindrical structures, and one end of the short pin is provided with a polygonal connecting part which is radially clamped into a notch in the middle of the long pin.

In one embodiment, the fastener comprises a screw and a nut, and the screw penetrates through the end parts of one ends of the two short pins along the axial direction of the short pins and is connected with the nut.

In one embodiment, the inner part of the stop collar is provided with a cross-shaped notch, the cross-shaped shaft body is arranged in the cross-shaped notch, and four end parts of the cross-shaped shaft body protrude out of the outer part of the stop collar.

To achieve the above and other related objects, the present invention provides a universal joint assembly, comprising,

the cross-shaped structure comprises a plurality of cross-shaped structures,

a long pin;

the two short pins are inserted into the middle positions of the long pins along the radial direction of the long pins, are symmetrically arranged on two sides of the long pins, fasteners penetrating through the short pins along the axial direction of the short pins are arranged between the two short pins, and the long pins and the short pins are connected to form a cross shaft body; and

the limiting sleeve is arranged in the middle of the limiting sleeve and used for limiting the cross shaft body;

the first driving shaft fork is rotationally connected with the short pin; and

and the second driving shaft fork is rotationally connected with the long pin.

In one embodiment, the first driving shaft fork and the second driving shaft fork comprise a shaft body and two ear plates symmetrically arranged at the edges of the end parts of the shaft body, two short pins are respectively inserted into the connecting holes in the middle parts of the two ear plates of the first driving shaft fork, and two ends of the long pin are inserted into the connecting holes in the middle parts of the two ear plates of the second driving shaft fork.

In one embodiment, the first driving shaft fork and the second driving shaft fork are respectively provided with a through connecting groove at the middle position of the shaft body, and the connecting grooves are used for connecting a driving shaft or a driven shaft.

To achieve the above and other related objects, the present invention provides a universal joint, comprising,

two groups of universal connecting components comprise a universal connecting component,

the cross-shaped structure comprises a cross-shaped structure,

a long pin;

the two short pins are inserted into the middle position of the long pin along the radial direction of the long pin, the two short pins are symmetrically arranged on two sides of the long pin, a fastening piece which penetrates through the two short pins along the axial direction of the short pin is arranged between the two short pins, and the long pin and the short pins are connected to form a cross shaft body; and

the limiting sleeve is arranged in the middle of the limiting sleeve and used for limiting the cross shaft body;

the first driving shaft fork is rotationally connected with the short pin; and

the second driving shaft fork is rotatably connected with the long pin;

and the spline shaft is used for connecting two groups of the universal connecting components which are arranged oppositely.

In one embodiment, a through connection groove is formed in the middle of the shaft body of the second driving shaft yoke and used for connecting a driving shaft or a driven shaft, the spline shaft is fixed to the shaft body of the first driving shaft yoke of one of the sets of universal connection assemblies, an axially through spline groove is formed in the middle of the shaft body of the first driving shaft yoke of the other set of universal connection assemblies, and the spline shaft is inserted into the spline groove

In one embodiment, one side of the other group of universal connecting assemblies is provided with a stopping positioning sleeve, and the middle position of the stopping positioning sleeve is provided with a notch which axially penetrates through the stopping positioning sleeve and is matched with the spline shaft.

The utility model discloses a fastener that runs through along the stub axle that sets up, fastening structure that fixes is carried out at stub both ends is provided, when daily use, it limits the stub in both sides, the unilateral restriction mode of effectively having avoided current structure can't keep stable in structure's problem in vibrations or reciprocating rotary motion, in addition through the stopping position sleeve that sets up, the extension at universal connecting axle middle part is provided, can make the integral key shaft prolong at the inside portable length of first drive shaft fork, avoided when daily use, the problem that the integral key shaft drops from the spline groove appears.

Drawings

Fig. 1 is a schematic structural view of a cross structure of the present invention;

FIG. 2 is a connection diagram of the long pin and the short pin of the present invention;

fig. 3 is a schematic structural view of the universal connection assembly of the present invention;

fig. 4 is a schematic diagram of the universal coupling structure of the present invention.

Reference numerals are as follows: 10. a limiting sleeve; 11. a long pin; 12. a short pin; 13. a screw; 14. a nut; 20. a first drive shaft yoke; 21. stopping the positioning sleeve; 30. a second drive shaft yoke; 31. connecting grooves; 40. a spline shaft.

Detailed Description

The following embodiments of the present invention are provided by way of specific examples, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

Please refer to fig. 1-4. It should be noted that the drawings provided in the present embodiment are only for illustrating the basic idea of the invention in a schematic manner, and only the components related to the invention are shown in the drawings rather than being drawn according to the number, shape and size of the components in actual implementation, and the form, quantity and proportion of the components in actual implementation may be changed at will, and the layout of the components may be more complicated.

Example one

Fig. 1 shows a structural schematic of the cross structure of the present invention. Referring to fig. 1 and 2, a cross structure is provided, which includes: long pin 11, short pin 12, stop collar 10.

The number of the short pins 12 is two, the two short pins 12 are symmetrically arranged on two sides of the long pin 11, the two short pins 12 are radially inserted into the middle position of the long pin 11 along the long pin 11, a fastening piece axially penetrating through the short pins 12 is arranged between the two short pins 12, and the long pin 11 and the short pins 12 are connected to form a cross axle body.

Through fixing two stub 12 along the fastener that stub 12 axial runs through, because it runs through both sides, consequently it can restrict at the both ends of stub 12 when the atress, forms two-way restriction structure, can avoid restricting the structure of stub 12 with screw 13 in the unilateral, and the universal joint subassembly that leads to is when vibrations environment or carrying out reciprocating rotary motion, effectively avoids screw 13 to appear not hard up the condition that drops.

Furthermore, the long pin 11 and the short pin 12 are cylindrical structures, one end of the short pin 12 is provided with a polygonal connecting portion, the connecting portion is radially clamped into a notch in the middle of the long pin 11, a limiting function is provided through the polygonal connecting portion, it can be ensured that the short pin 12 cannot rotate along the axis of the short pin 12 in the using process, and the stability of a cross shaft body formed by combining the short pin 12 and the long pin 11 is ensured.

Further, the fastener includes screw 13 and nut 14, and screw 13 runs through the tip and is connected with nut 14 of two stub 12 one end along stub 12 axial, through the screw-thread fit of screw 13 with nut 14, carries out position restriction in stub 12's both sides, forms two-way restriction structure, effectively avoids screw 13 to appear becoming flexible the condition that drops.

In order to ensure the stability of the connection between the screw 13 and the nut 14 under partially severe use conditions, the screw 13 and the nut 14 are further fixed by welding to achieve the effect of preventing the nut from loosening, and when the screw 13 needs to be detached, the screw 13 is cut off from the connection position of the screw 13 and the nut 14.

Because the long round pin 11 is applied to the moment of torsion transmission between the structure with the cross axle body that short round pin 12 is connected and is formed, and only regard as the support with the cross axle body, the cracked condition of cross axle body root appears easily, consequently need strengthen the support intensity of cross axle body, set up the cross axle body in the middle part of stop collar 10, stop collar 10 is used for restricting the cross axle body to the joint strength of cross axle body root is strengthened to stop collar 10, avoids the too big cracked problem of root that leads to of moment of torsion.

Further, the inside of stop collar 10 has the notch that is the cross form, and the cross axis body sets up in the inside of cross form notch, and four tip of cross axis body all outstanding stop collar 10's outside, with the axle center position complete cladding of cross axis body in the inside of stop collar 10, guarantee that the root of cross axis body axle center position can not appear cracked condition.

Example two

Fig. 3 is a schematic structural diagram of the universal connection assembly of the present invention, please refer to fig. 3, which provides a universal connection assembly, including: a cross-tie structure, a first drive yoke 20, and a second drive yoke 30.

Wherein, the cross knot structure includes: long pin 11, short pin 12 and stop collar 10.

The quantity of short round pin 12 is two, and two short round pins 12 symmetries set up in the both sides of long round pin 11, radially inserts long round pin 11's middle part position along long round pin 11, are provided with the fastener that runs through along short round pin 12 axial between two short round pins 12, and long round pin 11 is connected with short round pin 12 and is formed the cross axis body, and the cross axis body sets up in the middle part of stop collar 10, and stop collar 10 is used for restricting the cross axis body.

The first drive shaft yoke 20 is pivotally connected to the short pin 12 and the second drive shaft yoke 30 is pivotally connected to the long pin 11.

The cross knot structure in will embodiment one is applied to universal joint assembly, can strengthen the stability of being connected between universal joint assembly's first driving shaft fork 20 and the second driving shaft fork 30, effectively avoids appearing the cross axle body fracture or screw 13 drops and leads to the cross axle body can't maintain in the torque transmission, and then leads to the condition that first driving shaft fork 20 and second driving shaft fork 30 drop.

Specifically, first drive shaft fork 20 and second drive shaft fork 30 include the axis body and the symmetry sets up two otic placodes at the axis body tip edge, the connecting hole at two otic placodes middle parts of first drive shaft fork 20 is inserted respectively to two short pins 12, the connecting hole at two otic placodes middle parts of second drive shaft fork 30 is inserted at the both ends of long pin 11, spread groove 31 that runs through is all seted up at the middle part of first drive shaft fork 20 and second drive shaft fork 30, spread groove 31 is used for connecting drive shaft or driven shaft, the cross axis body runs through corresponding connecting hole, make first drive shaft fork 20 and second drive shaft fork 30 can the free rotation, after drive shaft and driven shaft are connected respectively to first drive shaft fork 20 and second drive shaft fork 30, can transmit the moment of torsion of drive shaft to on the driven shaft that is in different angles, and then satisfy certain linkage demand.

EXAMPLE III

Fig. 4 is a schematic structural view of the universal coupling of the present invention, please refer to fig. 4, and a universal coupling is provided, which includes two sets of universal connecting assemblies and a spline shaft 40.

Wherein, universal coupling assembling includes: cross knot structure, first drive shaft fork 20, second drive shaft fork 30, the cross knot structure includes: long pin 11, short pin 12 and stop collar 10.

The quantity of short round pin 12 is two, two short round pin 12 symmetries set up the both sides at long round pin 11, radially insert long round pin 11 intermediate position along long round pin 11, be provided with along the fastener that short round pin 12 axial runs through between two short round pins 12, long round pin 11 is connected with short round pin 12 and is formed the cross axis body, the cross axis body sets up in the middle part of stop collar 10, stop collar 10 is used for restricting the cross axis body, first drive shaft fork 20 rotates with short round pin 12 to be connected, second drive shaft fork 30 rotates with long round pin 11 to be connected.

And the spline shaft 40 is used for connecting two groups of oppositely arranged universal connecting components.

The universal connecting component in the second embodiment is applied to the universal coupling, a coupling structure with two ends capable of adjusting angles can be formed, more angle adjusting requirements can be met in practical application, the application range is wider, and the first driving shaft fork 20 and the second driving shaft fork 30 at two ends of the coupling structure can be prevented from falling off in torque transmission due to the cross-shaped structure in the first embodiment, so that the stability of the coupling structure is enhanced.

In one embodiment, a through connection groove 31 is formed in the middle of the shaft body of the second driving shaft yoke 30, the connection groove 31 is used for connecting a driving shaft or a driven shaft, the spline shaft 40 is fixed with the shaft body of the first driving shaft yoke 20 of one group of universal connection assemblies, an axial through spline groove is formed in the middle of the shaft body of the first driving shaft yoke 20 of the other group of universal connection assemblies, and the spline shaft 40 is inserted into the spline groove.

Unlike the single-set universal connecting assembly, the connecting groove 31 is only formed on the second driving shaft yoke 30 at both sides, the first driving shaft yoke 20 is used for connecting with the spline shaft 40, and is generally fixed with one first driving shaft yoke 20 by welding, when in use, the spline shaft 40 is inserted into the other first driving shaft yoke 20, and at this time, the spline shaft 40 and the other first driving shaft yoke 20 are in a movable state, so that the overall length of the universal coupling can be controlled according to actual operation requirements, but after the adjustment is finished, the spline shaft 40 needs to be ensured to be always located inside the spline groove in the operation process.

Furtherly, another group universal connection assembly's one side has the stop position sleeve 21, the axial notch that runs through is seted up to the middle part position of stop position sleeve 21, notch and the cooperation of integral key shaft 40 select the purpose of the first driving shaft fork 20 of satisfying of the stop position sleeve 21 of suitable length for the holistic length control scope extension of universal coupling, stop position sleeve 21 can adopt the welded mode fixed, and stop position sleeve 21 adds according to the demand, if overall length is enough, then need not to add stop position sleeve 21.

In the description herein, numerous specific details are provided, such as examples of components and/or methods, to provide a thorough understanding of embodiments of the invention. One skilled in the relevant art will recognize, however, that an embodiment of the invention can be practiced without one or more of the specific details, or with other apparatus, systems, assemblies, methods, components, materials, parts, and/or the like. In other instances, well-known structures, materials, or operations are not specifically shown or described in detail to avoid obscuring aspects of embodiments of the present invention.

Reference throughout this specification to "one embodiment", "an embodiment", or "specific embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment, and not necessarily in all embodiments, of the invention. Thus, the various appearances of the phrases "in one embodiment", "in an embodiment", or "in a specific embodiment" in various places throughout this specification are not necessarily referring to the same embodiment. Furthermore, the particular features, structures, or characteristics of any specific embodiment of the present invention may be combined in any suitable manner with one or more other embodiments. It is to be understood that other variations and modifications of the embodiments of the invention described and illustrated herein are possible in light of the teachings herein and are to be considered as part of the spirit and scope of the present invention.

It will also be appreciated that one or more of the elements shown in the drawings/figures can also be implemented in a more separated or integrated manner, or even removed because it is not operational in certain circumstances or may be provided as useful in accordance with a particular application.

Additionally, any labeled arrows in the drawings/figures should be considered only as exemplary, and not limiting, unless otherwise specifically noted. Further, as used herein, the term "or" is generally intended to mean "and/or" unless otherwise indicated. Combinations of components or steps will also be considered as being noted where terminology is foreseen as rendering the ability to separate or combine is unclear.

As used in the description herein and throughout the claims that follow, "a", "an" and "the" include plural references unless otherwise specified. Also, as used herein and throughout the claims that follow, the meaning of "in" \823030; (in) "includes" in 8230; (in) "and" in 8230; (on) "unless otherwise indicated.

The above description of illustrated embodiments of the invention, including what is described in the abstract of the specification, is not intended to be exhaustive or to limit the invention to the precise forms disclosed herein. While specific embodiments of, and examples for, the invention are described herein for illustrative purposes only, various equivalent modifications are possible within the spirit and scope of the present invention, as those skilled in the relevant art will recognize and appreciate. As indicated, these modifications may be made to the present invention in light of the foregoing description of illustrated embodiments of the present invention and are to be included within the spirit and scope of the present invention.

The system and method have been described herein in general terms as providing details to facilitate the understanding of the invention. Furthermore, various specific details have been given to provide a general understanding of the embodiments of the invention. One skilled in the relevant art will recognize, however, that an embodiment of the invention can be practiced without one or more of the specific details, or with other apparatus, systems, assemblies, methods, components, materials, parts, and/or the like. In other instances, well-known structures, materials, and/or operations are not specifically shown or described in detail to avoid obscuring aspects of embodiments of the present invention.

Thus, although the present invention has been described herein with reference to particular embodiments thereof, freedom of modification, various changes and substitutions are intended in the foregoing disclosure, and it should be understood that in some instances some features of the present invention will be employed without a corresponding use of other features without departing from the scope and spirit of the present invention as set forth. Accordingly, many modifications may be made to adapt a particular situation or material to the essential scope and spirit of the present invention. It is intended that the invention not be limited to the particular terms used in following claims and/or to the particular embodiment disclosed as the best mode contemplated for carrying out this invention, but that the invention will include any and all embodiments and equivalents falling within the scope of the appended claims. Accordingly, the scope of the invention is to be determined solely by the appended claims.

Claims (10)

1. A cross structure is characterized by comprising,

a long pin;

the two short pins are inserted into the middle positions of the long pins along the radial direction of the long pins, the two short pins are symmetrically arranged on two sides of the long pins, a fastening piece which penetrates through the two short pins along the axial direction of the short pins is arranged between the two short pins, and the long pins and the short pins are connected to form a cross shaft body; and

the limiting sleeve is arranged in the middle of the limiting sleeve and used for limiting the cross shaft body.

2. The cross knot structure of claim 1, wherein the long pin and the short pin are cylindrical structures, and one end of the short pin is provided with a polygonal connecting part which is radially clamped into a notch in the middle of the long pin.

3. The cross structure of claim 2, wherein the fastener comprises a screw and a nut, and the screw is connected with the nut through the end of one end of the two stub pins in the axial direction of the stub pins.

4. The cross knot structure of claim 1, wherein the inside of the position-limiting sleeve has a cross-shaped notch, the cross shaft body is disposed inside the cross-shaped notch, and four end portions of the cross shaft body protrude outside the position-limiting sleeve.

5. A universal joint assembly, comprising,

the cross-shaped structure comprises a cross-shaped structure,

a long pin;

the two short pins are inserted into the middle positions of the long pins along the radial direction of the long pins, the two short pins are symmetrically arranged on two sides of the long pins, a fastening piece which penetrates through the two short pins along the axial direction of the short pins is arranged between the two short pins, and the long pins and the short pins are connected to form a cross shaft body; and

the limiting sleeve is arranged in the middle of the limiting sleeve and used for limiting the cross shaft body;

the first driving shaft fork is rotationally connected with the short pin; and

and the second driving shaft fork is rotationally connected with the long pin.

6. The universal connection assembly according to claim 5, wherein the first driving shaft yoke and the second driving shaft yoke comprise a shaft body and two ear plates symmetrically arranged at the end edges of the shaft body, two short pins are respectively inserted into the connecting holes at the middle parts of the two ear plates of the first driving shaft yoke, and two ends of the long pin are respectively inserted into the connecting holes at the middle parts of the two ear plates of the second driving shaft yoke.

7. The universal connection assembly according to claim 6, wherein a through connection groove is formed in each of the middle positions of the shaft bodies of the first driving shaft yoke and the second driving shaft yoke, and the connection groove is used for connecting a driving shaft or a driven shaft.

8. A universal joint, comprising,

two groups of universal connecting components comprise a connecting rod,

the cross-shaped structure comprises a cross-shaped structure,

a long pin;

the two short pins are inserted into the middle position of the long pin along the radial direction of the long pin, the two short pins are symmetrically arranged on two sides of the long pin, a fastening piece which penetrates through the two short pins along the axial direction of the short pin is arranged between the two short pins, and the long pin and the short pins are connected to form a cross shaft body; and

the limiting sleeve is arranged in the middle of the limiting sleeve and used for limiting the cross shaft body;

the first driving shaft fork is rotationally connected with the short pin; and

the second driving shaft fork is rotatably connected with the long pin;

and the spline shaft is used for connecting two groups of the universal connecting components which are arranged oppositely.

9. The universal coupling according to claim 8, wherein a through connection groove is formed at a middle position of the shaft body of the second driving shaft yoke, the connection groove is used for connecting a driving shaft or a driven shaft, the spline shaft is fixed to the shaft body of the first driving shaft yoke of one of the sets of the universal coupling assemblies, an axially through spline groove is formed at a middle position of the shaft body of the first driving shaft yoke of the other set of the universal coupling assemblies, and the spline shaft is inserted into the spline groove.

10. The universal coupling according to claim 8, wherein one side of the other set of universal coupling assemblies has a backstop positioning sleeve, and the middle position of the backstop positioning sleeve is provided with a notch which axially penetrates through the backstop positioning sleeve and is matched with the spline shaft.

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