CN216241808U - Composite universal transmission structure - Google Patents

Abstract

The utility model discloses a composite universal transmission structure, which comprises a spherical universal joint and a three-section type universal shaft, wherein the spherical universal joint consists of two parts capable of realizing relative spatial swing, and the two parts can be locked relatively; the syllogic cardan shaft is installed in the ball universal joint, and both ends can move about respectively and wear out two parts on the ball universal joint, and the both ends homoenergetic of syllogic cardan shaft is relative the part rotation. This compound universal transmission structure installs the ball universal joint additional on the basis of current syllogic cardan shaft, utilizes two parts that can realize space phase to swing on the ball universal joint to limit the both ends relative swing range of syllogic cardan shaft respectively, and wherein two parts can the relative locking, can fix the both ends of syllogic cardan shaft like this effectively, and do not influence the original swing range of syllogic cardan shaft. The two parts of the ball universal joint can not influence the rotation of the three-section type universal shaft when the swing angle is adjusted.

Description

Composite universal transmission structure

Technical Field

The utility model relates to the technical field of transmission instruments, in particular to a composite universal transmission structure.

Background

The universal joint is a machine part for realizing variable-angle power transmission, is used for changing the position of a transmission axis direction, but mostly adopts a two-joint structure, mainly realizes swinging on at most two plane dimensions, limits the swinging distance and amplitude range, and has a limitation on application because the range is relatively small. Three-joint universal joints are commonly used in the industry to increase the amplitude of the drive and the pitch of the oscillations.

In the actual use process, two ends of the three-joint universal joint are connected with two fixed structures, namely fixed transmission, so that the three-joint universal joint can not randomly swing at two ends in the transmission process to cause transmission looseness. However, in some transmission fields with one open end, such as the field of unmanned aerial vehicles or ship transmission, since the end of the three-joint universal joint connected to the outside is an open end, a multi-link fixing structure must be used for fixing the end of the three-joint universal joint transmitting to the outside in the transmission, such as a multi-link suspension structure on an automobile chassis, but the multi-link fixing structure can limit the swing amplitude of the three-joint universal joint and is limited in practical use. Meanwhile, the multi-connecting-rod fixing structure is complex in structure, the space requirement for part movement is high, and the use of the multi-connecting-rod fixing structure in some fields is very restricted, especially in the field of unmanned aerial vehicle paddle transmission.

Disclosure of Invention

The utility model aims to solve at least one of the technical problems and provides a composite universal transmission structure which is large in transmission amplitude, simple in structure and stable in transmission.

In order to achieve the purpose, the utility model adopts the technical scheme that:

a composite universal transmission structure comprises a spherical universal joint and a three-section type universal shaft, wherein the spherical universal joint consists of two parts capable of realizing relative spatial swing, and the two parts can be locked relatively; the syllogic cardan shaft is installed in the ball universal joint, and both ends can move about respectively and wear out two on the ball universal joint the part, the both ends homoenergetic of syllogic cardan shaft is relative the part rotates.

Furthermore, the two parts are respectively a fixed base and a spherical seat, the spherical seat is at least of a hemispherical structure, a cavity is arranged in the fixed base, and a first channel is arranged at the bottom of the cavity; the spherical seat is installed in the opening of the cavity in a sealing manner, the spherical seat can swing around the cavity in space, and a second channel is arranged on one side of the spherical seat, which is far away from the bottom of the cavity; the three-section type universal shaft is installed in the containing cavity, one end of the three-section type universal shaft can penetrate out of the first channel in a rotating mode, and the other end of the three-section type universal shaft can penetrate out of the second channel in a rotating mode.

Furthermore, the spherical seat comprises a bowl-shaped cover and a magnetic ring assembly, one side of an opening of the bowl-shaped cover is buckled in an opening of the containing cavity, and the bowl-shaped cover can rotate around the center of the sphere relative to the opening of the containing cavity and always block the opening of the containing cavity; the bottom of the bowl-shaped cover is provided with the second channel; the magnetic ring assembly is arranged in the cavity and is used for adsorbing the bowl-shaped cover on the opening of the cavity all the time.

Furthermore, the magnetic ring assembly comprises an inner magnetic ring and an outer magnetic ring, the outer magnetic ring is arranged on the inner wall of the containing cavity, and the inner ring is abutted against the outer wall of the bowl-shaped cover; the inner magnetic ring is arranged on the inner wall of the bowl-shaped cover located in the opening area, and the inner magnetic ring and the outer magnetic ring can attract each other.

Further, the bowl-shaped cover can slide along the opening direction of the cavity.

Further, the containing cavity comprises a vertical portion and a closing-in portion, the diameter of the vertical portion is larger than or equal to that of the bowl-shaped cover, the diameter of the opening end of the closing-in portion is smaller than that of the bowl-shaped cover, and the bowl-shaped cover can slide along the vertical portion.

Furthermore, the fixed base comprises a base bottom and a main body block arranged on the base bottom, the cavity is arranged in the main body block, and the opening is arranged on one side far away from the base bottom; the first channel is arranged on the main body block, and one outward end of the first channel penetrates through the main body block and the seat bottom.

Further, unable adjustment base still includes the restriction ring seat, the restriction ring seat is installed and is located the one side that holds the chamber opening at the main part piece, the surface of spherical seat and the inner wall butt of the inner ring of restriction ring seat, the restriction ring seat can be with the spherical seat restriction in holding the chamber.

Furthermore, a plurality of mounting holes are formed in the base.

Furthermore, the three-section type universal shaft comprises a first connecting shaft, a second connecting shaft and a transmission body, wherein one end of the first connecting shaft is hinged with one end of the transmission body through a cross shaft, and one end of the second connecting shaft is hinged with the other end of the transmission body through the cross shaft; the transmission body is located in the containing cavity, the other end of the first connecting shaft movably penetrates through the first channel, the other end of the second connecting shaft movably penetrates through the second channel, and the first connecting shaft and the second connecting shaft can rotate relative to the first channel and the second channel respectively.

The utility model has the beneficial effects that:

the composite universal transmission structure is additionally provided with the spherical universal joint on the basis of the existing three-section universal shaft, and the relative swinging amplitude of two ends of the three-section universal shaft is limited by utilizing two parts capable of realizing relative spatial swinging on the spherical universal joint respectively, wherein the two parts can be locked relatively, so that the two ends of the three-section universal shaft can be effectively fixed, and the original swinging amplitude of the three-section universal shaft is not influenced. When the swing angle is adjusted, the rotation of the three-section type universal shaft is not influenced by the two parts of the spherical universal joint; meanwhile, the structure of the spherical universal joint can better protect the middle area of the three-section type universal shaft, so that external sundries are prevented from falling into the joint, and the abrasion is reduced.

Drawings

The following detailed description of embodiments of the utility model is provided in conjunction with the appended drawings, in which:

FIG. 1 is a first schematic structural diagram according to an embodiment of the present invention;

FIG. 2 is a second schematic structural diagram according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of the internal structure of the embodiment of the present invention;

FIG. 4 is a schematic structural diagram of another embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a three-segment type cardan shaft according to an embodiment of the present invention.

In the figure: ball universal joint 100, fixed base 110, cavity 111, first channel 112, vertical portion 113, closing-in portion 114, seat bottom 115, main body block 116, limiting ring seat 117, mounting hole 118, spherical seat 120, second channel 121, bowl-shaped cover 122, inner magnetic ring 123, outer magnetic ring 124, three-section universal shaft 200, first connecting shaft 210, second connecting shaft 220, transmission body 230, cross shaft 240

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or there can be intervening components, and when a component is referred to as being "disposed in the middle," it is not just disposed in the middle, so long as it is not disposed at both ends, but rather is within the scope of the middle. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Referring to fig. 1 to 5, the present application provides a compound universal transmission structure, which includes a ball joint 100 and a three-segment type universal shaft 200, wherein the ball joint 100 is composed of two components capable of realizing relative spatial swing; syllogic cardan shaft 200 is installed in ball joint 100, and both ends can move about respectively and wear out two on the ball joint 100 the part, syllogic cardan shaft 200's both ends homoenergetic is relative the part rotates. In fact, the ball joint 100 may be of a conventional ball joint construction, although in this application there is a certain amount of structural design variation due to the need to mount the three-piece cardan shaft 200 therein. In the actual use process, the two parts can be locked relatively, so that the swinging angles of the input end and the output end of the three-section type universal shaft 200 are kept fixed, the whole transmission direction is convenient to adjust, and transmission fixation is realized. Three-piece cardan shaft 200 may be a conventional three-piece cardan joint, such as the structure disclosed in the 201921217257.7 three-piece cardan joint, and will not be described in detail in this application. It should be added that, in the present application, the ball joint 100 has a space inside, which is convenient for accommodating the middle region of the three-segment type cardan shaft 200, and at the same time, the outward ends of the two components are provided with channels, which are convenient for the two ends of the three-segment type cardan shaft 200 to penetrate out.

The composite universal transmission structure of the utility model is additionally provided with the ball universal joint 100 on the basis of the existing three-section universal shaft 200, and the relative swing amplitude of two ends of the three-section universal shaft 200 is limited by utilizing two parts which can realize relative spatial swing on the ball universal joint 100 respectively, wherein the two parts can be locked relatively, thus effectively fixing two ends of the three-section universal shaft 200 without influencing the original swing amplitude of the three-section universal shaft 200. When the swing angle is adjusted, the two components of the ball joint 100 do not affect the rotation of the three-segment type universal shaft 200; meanwhile, the structure of the ball joint 100 can better protect the middle area of the three-section type universal shaft 200, prevent external impurities from falling into the joint and reduce abrasion.

In view of the above situation, the present application provides a specific structure of a ball-and-socket joint 100, where two of the components are a fixed base 110 and a ball-and-socket 120, respectively, the ball-and-socket 120 is at least a hemisphere structure, a cavity 111 is provided in the fixed base 110, and a first channel 112 is provided at the bottom of the cavity 111; the spherical seat 120 is installed in the opening of the cavity 111 in a sealing manner, the spherical seat 120 can swing around the cavity 111 in space, and a second channel 121 is arranged on one side of the spherical seat 120 away from the bottom of the cavity 111; the three-section type cardan shaft 200 is installed in the accommodating cavity 111, and one end of the three-section type cardan shaft can penetrate through the first passage 112 in a rotating mode, and the other end of the three-section type cardan shaft can penetrate through the second passage 121 in a rotating mode. In the actual use, unable adjustment base 110 is used for fixing on the structure of outside for can keep whole ball joint 100 stable, and ball seat 120 is whole ball joint 100's expansion end, and unable adjustment base 110 and ball seat 120 can support the input and the output of syllogic cardan shaft 200 to a certain extent, can also improve this syllogic cardan shaft 200's transmission intensity like this. In fact, the inner wall of the housing 111 abuts against the outer surface of the spherical end of the spherical seat 120, which ensures the tightness of the connection. The first channel 112 and the second channel 121 can be abutted with the outer walls of the input end and the output end of the three-section type universal shaft 200, so that the input end and the output end of the three-section type universal shaft 200 can be abutted against the inner walls of the first channel 112 and the second channel 121 to realize rotation. To better effect rotation, a rotation bearing may be installed in the first and second passages 112 and 121, so as to reduce resistance to rotation and reduce wear. In fact, the open end of the cavity 111 is provided with a limiting structure to prevent the spherical seat 120 from falling out of the cavity 111.

In some embodiments, in order to make the spherical seat 120 simpler and have a certain controllability, the spherical seat 120 includes a bowl-shaped cover 122 and a magnetic ring assembly, one side of the opening of the bowl-shaped cover 122 is buckled in the opening of the cavity 111, and the bowl-shaped cover 122 can rotate around its spherical center in space relative to the opening of the cavity 111 and always blocks off the opening of the cavity 111; the bottom of the bowl-shaped cover 122 is provided with the second channel 121; the magnetic ring assembly is installed in the cavity 111 and is used for adsorbing the bowl-shaped cover 122 on the opening of the cavity 111 all the time. In fact, the bowl-shaped cover 122 can slide along the opening direction of the cavity 111. In practical use, the position of the bowl-shaped cover 122 in the cavity 111 is not fixed, that is, the position of the center of the bowl-shaped cover 122 in the cavity 111 is not fixed, which can increase the mobility of the whole ball joint 100. In fact, during use, the three-segment cardan shaft 200 will move along its transmission direction during transmission, and therefore it is possible to drive the bowl-shaped cover 122 to move, and thus the bowl-shaped cover 122 will move in the cavity 111. For this reason, the magnetic ring subassembly main role is in this application for the motion of spacing bowl shape cover 122, and in fact, the appearance chamber 111 opening part is provided with position sensing, can detect bowl shape cover 122's displacement, can also control the adsorption affinity of magnetic ring subassembly according to bowl shape cover 122 apart from appearance chamber 111 open-ended position simultaneously, increases whole ball joint 100's use flexibility like this.

Further, in a modified embodiment, the magnetic ring assembly comprises an inner magnetic ring 123 and an outer magnetic ring 124, the outer magnetic ring 124 is mounted on the inner wall of the cavity 111, and the inner ring abuts against the outer wall of the bowl-shaped cover 122; the inner magnet ring 123 is mounted on the inner wall of the bowl-shaped cover 122 in the opening area, the inner magnet ring 123 and the outer magnet ring 124 being capable of attracting each other. Wherein, the inner magnetic ring 123 and the outer magnetic ring 124 are both provided with rollers, which is convenient for the bowl-shaped cover 122 to swing. In fact, in some embodiments, driving members are disposed in both the inner magnetic ring 123 and the outer magnetic ring 124, and the driving members can be connected to the rollers, that is, the rollers can realize the directional swing of the bowl-shaped cover 122. Generally, rollers may be disposed at four equal positions of the inner magnetic ring 123 and the outer magnetic ring 124, and two adjacent rollers or a plurality of rollers with a desired adjustment direction are used to drive the bowl-shaped cover 122 to move, so as to achieve the swing adjustment of the bowl-shaped cover 122.

Referring to fig. 3 and 4, in fact, in some embodiments, in addition to using a position sensor to detect the position of the bowl-shaped cover 122 in the cavity 111, the cavity 111 may be modified so that the bowl-shaped cover 122 can move in the cavity 111 to accommodate the play of the three-segment type cardan shaft 200 in the transmission direction. The cavity 111 comprises a vertical portion 113 and a closing-in portion 114, the diameter of the vertical portion 113 is larger than or equal to that of the bowl-shaped cover 122, the diameter of the opening end of the closing-in portion 114 is smaller than that of the bowl-shaped cover 122, and the bowl-shaped cover 122 can slide along the vertical portion 113. In fact, the cavity 111 may be a separate structure to achieve the installation of the bowl-shaped cover 122, and in some embodiments, the fixing base 110 may also be a separate structure to achieve the installation of the bowl-shaped cover 122 into the cavity 111.

With further reference to fig. 1 to 3, in order to facilitate the later installation and fixation of the fixation base 110 on an external fixture, the fixation base 110 includes a base 115 and a main body block 116 mounted on the base 115, the cavity 111 is disposed in the main body block 116, and the opening is disposed on a side away from the base 115; the first channel 112 is disposed on the body block 116, and the outward end penetrates the body block 116 and the seat bottom 115. The base 115 is of a plate-shaped structure, and a plurality of mounting holes 118 are formed in the base 115, so that the later-stage mounting work is facilitated. Of course, the body block 116 may be a hemisphere or a square block, and the cross section of the cavity 111 is a circle, so as to fit the hemisphere shape of the bowl-shaped cover 122.

Referring to fig. 4, in fact, in an embodiment of the present application, in order to prevent the bowl-shaped cover 122 from coming out of the cavity 111, the fixed base 110 further includes a limit ring seat 117, the limit ring seat 117 is installed on one side of the body block 116 at the opening of the cavity 111, the outer surface of the spherical seat 120 abuts against the inner wall of the inner ring of the limit ring seat 117, and the limit ring seat 117 can limit the spherical seat 120 in the cavity 111. Wherein, the limiting ring seat 117 can be fixed on the main body block 116 by screws, which facilitates the later disassembly. In fact, in some embodiments, the limiting ring seat 117 is provided with a rubber pad on the inner wall thereof, and the rubber pad is provided with lubricating oil, so as to reduce the wear on the outer spherical surface of the spherical seat 120.

Referring further to fig. 3 and 5, a three-piece type universal shaft 200 used in the present application may be a conventional three-piece type universal joint, but the conventional three-piece type universal joint is difficult to adapt to the specific structure of the ball-and-socket joint 100 in the present application, and for this purpose, the three-piece type universal shaft 200 includes a first connecting shaft 210, a second connecting shaft 220 and a transmission body 230, wherein one end of the first connecting shaft 210 is hinged to one end of the transmission body 230 through a cross 240, and one end of the second connecting shaft 220 is hinged to the other end of the transmission body 230 through a cross 240; the transmission body 230 is located in the accommodating cavity 111, the other end of the first connecting shaft 210 movably penetrates through the first channel 112, the other end of the second connecting shaft 220 movably penetrates through the second channel 121, and the first connecting shaft 210 and the second connecting shaft 220 can rotate relative to the first channel 112 and the second channel 121 respectively. In fact, the lengths of the first connecting shaft 210 and the second connecting shaft 220 are greater than the depths of the first channel 112 and the second channel 121, so that the first connecting shaft 210 and the second connecting shaft 220 are conveniently connected with an external structure, the transmission body 230 is actually a double-head structure, both ends of the transmission body are provided with connecting lugs, the connecting lugs are connected and hinged with the cross shaft 240, and similarly, the corresponding ends of the first connecting shaft 210 and the second connecting shaft 220 are also provided with connecting lugs, so that both ends of the remaining one of the cross shaft 240 on the connecting lug of the transmission body 230 are conveniently hinged.

Of course, in some embodiments, the outward ends of the first connecting shaft 210 and the second connecting shaft 220 are stepped shafts, which facilitates the installation of bearings, by which the first connecting shaft 210 and the second connecting shaft 220 can be installed in the first passage 112 and the second passage 121, respectively. In fact, since the first connecting shaft 210 and the second connecting shaft 220 may generate axial play during the transmission process, the bearings may be ball spline bearings, and accordingly, the first connecting shaft 210 and the second connecting shaft 220 are provided with spline grooves, so that the first connecting shaft 210 and the second connecting shaft 220 can rotate and move in the axial direction.

The above embodiments are only for illustrating the technical solutions of the present invention and are not limited thereto, and any modification or equivalent replacement without departing from the spirit and scope of the present invention should be covered within the technical solutions of the present invention.

Claims (10)

1. A composite universal transmission structure is characterized by comprising

A ball-and-socket joint (100); the device comprises two components capable of realizing relative spatial swing, wherein the two components can be locked relatively; and

syllogic cardan shaft (200), it is installed in ball universal joint (100), and both ends can move about respectively and wear out two on ball universal joint (100) part, the both ends homoenergetic of syllogic cardan shaft (200) is relative the part rotates.

2. The compound universal transmission structure according to claim 1, wherein the two parts are a fixed base (110) and a spherical seat (120), respectively, the spherical seat (120) is at least a hemisphere structure, a cavity (111) is provided in the fixed base (110), and a first channel (112) is provided at the bottom of the cavity (111); the spherical seat (120) is installed in an opening of the cavity (111) in a sealing manner, the spherical seat (120) can swing around the cavity (111) in a space manner, and a second channel (121) is arranged on one side, away from the bottom of the cavity (111), of the spherical seat (120); the three-section type universal shaft (200) is installed in the containing cavity (111), one end of the three-section type universal shaft can penetrate through the first channel (112) in a rotating mode, and the other end of the three-section type universal shaft can penetrate through the second channel (121) in a rotating mode.

3. A compound universal transmission structure according to claim 2, characterized in that the spherical seat (120) comprises a bowl-shaped cover (122) and a magnetic ring assembly, one side of the opening of the bowl-shaped cover (122) is buckled in the opening of the cavity (111), the bowl-shaped cover (122) can rotate around its spherical center in space relative to the opening of the cavity (111) and always seals off the opening of the cavity (111); the bottom of the bowl-shaped cover (122) is provided with the second channel (121); the magnetic ring assembly is arranged in the cavity (111) and is used for enabling the bowl-shaped cover (122) to be adsorbed on the opening of the cavity (111) all the time.

4. A compound universal drive according to claim 3, characterized in that the magnetic ring assembly comprises an inner magnetic ring (123) and an outer magnetic ring (124), the outer magnetic ring (124) is mounted on the inner wall of the cavity (111), and the inner ring abuts against the outer wall of the bowl-shaped cover (122); the inner magnetic ring (123) is arranged on the inner wall of the bowl-shaped cover (122) located on the opening area, and the inner magnetic ring (123) and the outer magnetic ring (124) can attract each other.

5. A compound universal drive structure according to claim 3, characterized in that said bowl-shaped cover (122) is slidable along the direction of the opening of the cavity (111).

6. A compound universal transmission structure according to claim 3 or 4, characterized in that the cavity (111) comprises a vertical portion (113) and a closing-in portion (114), the diameter of the vertical portion (113) is larger than or equal to the diameter of the bowl-shaped cover (122), the diameter of the opening end of the closing-in portion (114) is smaller than the diameter of the bowl-shaped cover (122), and the bowl-shaped cover (122) can slide along the vertical portion (113).

7. A compound universal drive structure according to claim 2, characterized in that the fixed base (110) comprises a base (115) and a main body block (116) mounted on the base (115), the cavity (111) is arranged in the main body block (116), and the opening is arranged on the side far from the base (115); the first channel (112) is arranged on the main body block (116), and one end of the first channel, which faces outwards, penetrates through the main body block (116) and the seat bottom (115).

8. A compound universal drive structure according to claim 7, characterized in that the fixed base (110) further comprises a limit ring seat (117), the limit ring seat (117) is installed on one side of the main body block (116) at the opening of the cavity (111), the outer surface of the spherical seat (120) abuts against the inner wall of the inner ring of the limit ring seat (117), and the limit ring seat (117) can limit the spherical seat (120) in the cavity (111).

9. A compound universal drive structure according to claim 7, characterized in that the base (115) is provided with mounting holes (118).

10. A compound universal transmission structure according to any one of claims 2, 3, 4, 5 or 7, wherein the three-section universal shaft (200) comprises a first connecting shaft (210), a second connecting shaft (220) and a transmission body (230), one end of the first connecting shaft (210) is hinged with one end of the transmission body (230) through a cross shaft (240), and one end of the second connecting shaft (220) is hinged with the other end of the transmission body (230) through the cross shaft (240); the transmission body (230) is located in the containing cavity (111), the other end of the first connecting shaft (210) movably penetrates through the first channel (112), the other end of the second connecting shaft (220) movably penetrates through the second channel (121), and the first connecting shaft (210) and the second connecting shaft (220) can rotate relative to the first channel (112) and the second channel (121) respectively.

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