CN106979250B - Shaft transmission device - Google Patents
Shaft transmission device Download PDFInfo
- Publication number
- CN106979250B CN106979250B CN201710343370.9A CN201710343370A CN106979250B CN 106979250 B CN106979250 B CN 106979250B CN 201710343370 A CN201710343370 A CN 201710343370A CN 106979250 B CN106979250 B CN 106979250B
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- Prior art keywords
- transmission
- transmission rod
- sliding
- shaft
- sleeves
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 160
- 238000006073 displacement reaction Methods 0.000 claims description 5
- 230000033001 locomotion Effects 0.000 description 11
- 238000010586 diagram Methods 0.000 description 8
- 238000003754 machining Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 208000032369 Primary transmission Diseases 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- 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
- F16D3/50—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members
- F16D3/60—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members comprising pushing or pulling links attached to both parts
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to the technical field of shaft transmission, in particular to a shaft transmission device which comprises two sleeves and at least two transmission rods; the at least two transmission rods are arranged between the two sleeves at intervals; one side of each sleeve, which is far away from the transmission rod, is connected with the transmission shaft; two ends of each transmission rod are respectively and movably connected with the two sleeves. According to the shaft transmission device provided by the invention, when a motor shaft and an intermediate shaft on a compressor are misplaced due to the fact that the motor bracket is insufficient in precision or assembly is carried out, the motor shaft and the intermediate shaft can enable sleeves connected with the motor shaft and the intermediate shaft to be misplaced. The transmission rod is movably connected with the sleeves, so that the transmission rod moves relative to the two sleeves, the two sleeves can move relatively to compensate the change of the relative positions of the two shafts, the condition that the shafts are blocked and cannot rotate is avoided, and power can be reliably transmitted.
Description
Technical Field
The invention relates to the technical field of shaft transmission, in particular to a shaft transmission device.
Background
The guide vane at the air inlet of the centrifugal compressor plays a role in changing the flowing direction of the entering airflow, and has great influence on the running performance of the compressor. The opening angle of the guide vane is changed by motor drive, and the guide vane is far away from the motor, so that power transmission can be realized only through an intermediate transmission system. The usual drive train design consists of three shafts (motor shaft, intermediate shaft, guide vane shaft) and parts for achieving inter-shaft power transmission, as shown in fig. 1. Because the guide vane shaft and the intermediate shaft are both arranged on the shell of the compressor and have a certain distance, the parallelism of the two shafts is easily ensured by machining, and then the power transmission is reliably realized by adopting gear transmission.
Under the theoretical design condition, the motor shaft and the intermediate shaft have good coaxiality, so that the primary transmission device can realize power transmission by adopting the auxiliary meshing of an internal gear, key connection and the like under the normal condition, as shown in fig. 2. However, the motor is connected with the motor bracket through threads, then the motor bracket is connected with the compressor shell through threads, and due to the machining errors (sheet metal parts or machining parts) and assembly errors of the motor bracket, the motor shaft and the intermediate shaft which are coaxial in theory often deviate greatly after being assembled, and the two shafts become space staggered shafts along with the inclination of the shafts to a certain extent, and the scheme often needs the teeth or the key to be meshed well so as to normally operate. If the two shafts are inclined at a larger angle or offset, the problem that the assembly is difficult or even impossible is likely to occur, and the phenomenon that the shafts and the transmission device are locally and seriously extruded or the shafts are blocked and cannot rotate, and the parts are greatly deformed or even damaged is likely to occur in the operation process.
In order to solve the problem of shaft coaxiality, the prior art mainly improves the machining and manufacturing precision of the motor bracket, and the later installation process is realized by increasing or reducing or polishing gaskets, so that the manufacturing cost is increased, and the assembly inconvenience is brought.
Disclosure of Invention
Based on this, it is necessary to provide a shaft transmission device capable of solving the transmission problem between the small-space staggered shafts against the problem that the shift or tilt between the shafts actually causes the failure of the normal operation.
The above purpose is achieved by the following technical scheme:
a shaft transmission device comprises two sleeves and at least two transmission rods; the at least two transmission rods are arranged between the two sleeves at intervals; one side of each sleeve, which is far away from the transmission rod, is connected with the transmission shaft; two ends of each transmission rod are respectively and movably connected with the two sleeves.
In one embodiment, each end of the at least two transmission rods is uniformly distributed on the sleeve with the rotation center of the corresponding sleeve as the center of circle.
In one embodiment, sliding holes corresponding to the number of the transmission rods are formed in each sleeve, and sliding bodies are arranged in each sliding hole; the two ends of the transmission rod are respectively connected with the sliding body so as to realize the movable connection of the transmission rod and the sleeve.
In one embodiment, the sliding hole is cylindrical, and the axial direction of the sliding hole extends along the radial direction of the sleeve; the side wall of the sliding hole is provided with a first opening for the transmission rod to pass through; the sliding body is spherical, the sliding body is arranged in the sliding hole in a sliding way, and the sliding body can rotate relative to the sliding hole and can axially move along the sliding hole.
In one embodiment, each sliding body is provided with a first sliding hole, and one end of the transmission rod is slidably arranged in the first sliding hole.
In one embodiment, the first opening is provided with a driving rod limiting groove, and the driving rod limiting groove is used for limiting the displacement of the driving rod along the axial sliding of the driving rod.
In one embodiment, a transmission rod limiting inclined plane is arranged on one side, away from the first opening, of the transmission rod limiting groove, and the transmission rod limiting inclined plane is used for limiting the inclination angle of the transmission rod.
In one embodiment, the sliding hole is cylindrical, and the axial direction of the sliding hole is parallel to the axial direction of the sleeve; the end part of the sliding hole is provided with a second opening for inserting the transmission rod; the sliding body is spherical and is rotatably arranged in the sliding hole.
In one embodiment, each sliding body is provided with a second sliding hole, and one end of the transmission rod is slidably arranged in the second sliding hole.
In one embodiment, an annular limiting inclined plane is arranged on the second opening along the edge of the second opening, and the annular limiting inclined plane is used for limiting the inclination angle of the transmission rod.
In the shaft transmission device, when the motor shaft and the intermediate shaft on the compressor are dislocated due to the insufficient precision of the motor bracket or the assembly problem, the motor shaft and the intermediate shaft can cause the sleeve connected with the motor shaft and the intermediate shaft to be dislocated. The transmission rod is movably connected with the sleeves, so that the transmission rod moves relative to the two sleeves, the two sleeves can move relatively to compensate the change of the relative positions of the two shafts, the condition that the shafts are blocked and cannot rotate is avoided, and power can be reliably transmitted.
Drawings
FIG. 1 is a schematic view of a conventional intermediate transmission structure for controlling rotation of a guide vane by a motor;
FIG. 2 is a schematic diagram of a conventional drive fit of a motor shaft and an intermediate shaft;
FIG. 3 is a schematic diagram of a shaft transmission device according to an embodiment of the present invention;
FIG. 4 is a schematic structural view of a sleeve of a shaft transmission device according to an embodiment of the present invention;
FIG. 5 is a cross-sectional view A-A of FIG. 4;
FIG. 6 is a schematic diagram of a driving rod of a shaft driving device according to an embodiment of the present invention;
FIG. 7 is a schematic structural view of a sliding body of a shaft transmission device according to an embodiment of the present invention;
FIG. 8 is a state diagram of a vertical radial offset of a shaft transmission provided by an embodiment of the present invention;
FIG. 9 is a state diagram of a horizontal radial offset of a shaft drive provided by an embodiment of the present invention;
FIG. 10 is a vertical axial tilt state diagram of a shaft transmission provided by an embodiment of the present invention;
FIG. 11 is a horizontal axial tilt state diagram of a shaft drive provided by an embodiment of the present invention;
FIG. 12 is a state diagram of a shaft transmission device with spatially staggered shafts according to an embodiment of the present invention;
FIG. 13 is a schematic view of a sleeve of a shaft transmission according to another embodiment of the present invention;
FIG. 14 is a schematic view of a sleeve of a shaft transmission according to another embodiment of the present invention;
fig. 15 is a B-B cross-sectional view of fig. 14.
Wherein:
100-sleeve;
110-a sliding hole; 111-a first opening; 112-a transmission rod limit groove; 113-a limit inclined plane of a transmission rod;
114-a second opening; 115-annular limiting inclined plane;
120-sliding body; 121-a first slide hole;
200-transmission rods;
300-drive shaft.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the shaft transmission device of the present invention will be described in further detail below by way of examples with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.
The shaft transmission device has stronger fault tolerance capability, and can effectively solve the inter-shaft transmission problem under the complex conditions that two shafts have radial offset, included angles and the like at the same time. The invention specifically describes the power transmission of the guide vane applied to the air inlet of the centrifugal compressor by the shaft transmission device, and aims to solve the problem of space staggered transmission of a motor shaft and an intermediate shaft, ensure normal transmission of power, and solve the problem that the assembly is difficult or even impossible by improving the machining and manufacturing precision of a motor bracket and a compressor shell.
As shown in fig. 3 to 7, an embodiment of the present invention provides a shaft transmission device, which includes two sleeves 100 and at least two transmission rods 200; at least two transmission rods 200 are disposed between the two sleeves 100 at intervals; one side of each sleeve 100, which is far from the transmission rod 200, is connected with a transmission shaft 300; two ends of each transmission rod 200 are respectively movably connected with the two sleeves 100.
Wherein, motor shaft on the compressor is connected with one of them sleeve 100, and the jackshaft is connected with another sleeve 100, and sleeve 100 adopts shaft hole and the cooperation mode of axle with the axle, and sleeve 100 accessible single bond, spline or structure such as square groove transmit self rotation to the axle, as long as can guarantee with the synchronous structure of axle rotation.
While at least two drive rods 200 between two sleeves 100 may or may not be parallel to each other. Preferably, at least two driving rods 200 are arranged in parallel and spaced between the two sleeves 100.
When the motor shaft and the intermediate shaft of the compressor are misaligned due to the insufficient accuracy of the motor bracket or the problem of assembly, the motor shaft and the intermediate shaft may cause the sleeve 100 connected thereto to be misaligned with each other. The transmission rod 200 is movably connected with the sleeve 100, so that the transmission rod 200 moves relative to the two sleeves 100, the two sleeves 100 can move relatively, the dislocation of the motor shaft and the intermediate shaft is decomposed, the situation that the shaft is clamped and cannot rotate is avoided, and power can be reliably transmitted.
In the above embodiment, the transmission rods 200 are movably connected with the sleeves 100 in a plurality of manners, and as an implementation manner, sliding holes 110 corresponding to the number of the transmission rods 200 are provided on each sleeve 100, and a sliding body 120 is provided in each sliding hole 110; the two ends of the transmission rod 200 are respectively connected with the sliding body 120 so as to realize the movable connection of the transmission rod 200 and the sleeve 100.
The shapes of the sliding hole 110 and the sliding body 120 may be various shapes, for example: the sliding hole 110 may be a cylindrical hole, a rectangular hole, a square hole, or the like, and the sliding body 120 may be a cylinder, a sphere, a cube, or the like, as long as the sliding body 120 can move within the sliding hole 110.
As an implementation manner, the sliding hole 110 is cylindrical, and the axial direction of the sliding hole 110 extends along the radial direction of the sleeve 100; a first opening 111 for the transmission rod 200 to pass through is arranged on the side wall of the sliding hole 110; the sliding body 120 is spherical, the sliding body 120 is slidably disposed in the sliding hole 110, and the sliding body 120 can rotate relative to the sliding hole 110 and can move axially along the sliding hole 110.
When the two shafts of the compressor are offset in the vertical direction, the transmission rod 200 is inclined in the vertical direction, and at this time, the transmission rod 200 drives the sliding body 120 to rotate in the sliding hole 110, so that one sleeve 100 moves in the vertical direction relative to the other sleeve 100 (as shown in fig. 8) to compensate for the offset (the offset distance d 1) of the two shafts in the vertical direction. When the two shafts of the compressor are shifted horizontally, the transmission rod 200 is inclined horizontally, and the transmission rod 200 drives the sliding body 120 to axially move along the sliding hole 110, so that one sleeve 100 moves horizontally relative to the other sleeve 100 (as shown in fig. 9) to compensate for the shift of the two shafts in the horizontal direction (the shift distance is d 2). When the two shafts of the compressor are inclined in the vertical direction, the transmission rod 200 is inclined in the vertical direction, and at this time, the transmission rod 200 drives the sliding body 120 to rotate in the sliding hole 110, so that one sleeve 100 is inclined in the vertical direction relative to the other sleeve 100 (as shown in fig. 10), so as to compensate the inclination of the two shafts in the vertical direction (the inclination angle is beta). When the two shafts of the compressor are inclined in the horizontal direction, the transmission rod 200 is inclined in the horizontal direction, and at this time, the transmission rod 200 drives the sliding body 120 to axially move along the sliding hole 110, so that one sleeve 100 is inclined in the horizontal direction relative to the other sleeve 100 (as shown in fig. 11), so as to compensate the inclination of the two shafts in the horizontal direction (the inclination angle is α).
Of course, the two sleeves 100 may be moved in combination with the four above-described modes of movement to accommodate the spatial misalignment of the two shafts of the compressor (see fig. 12).
In addition, the sliding body 120 is designed into a sphere shape, which is also beneficial to improving the stability of the motion of the transmission rod 200, so that the motion of the transmission rod 200 is smoother.
In other embodiments, the axial direction of the cylindrical sliding hole 110 may also be disposed at an angle with respect to the radial direction of the sleeve 100, and it is understood that the angle should be smaller to facilitate the sliding of the sliding body 120 in the sliding hole 110 when the transmission rod 200 is tilted.
As an implementation manner, each sliding body 120 is provided with a first sliding hole 121, and one end of the transmission rod 200 is slidably disposed in the first sliding hole 121. By moving the transmission rod 200 within the respective two sliding bodies 120, the effective transmission length of the transmission rod 200 and thus the distance of relative movement of the two sleeves 100 can be varied. This further increases the relative movement pattern between the two sleeves 100, enabling the shaft drive to accommodate a more varied misalignment pattern of the two shafts of the compressor.
Referring to fig. 5, further, a transmission rod limiting groove 112 is disposed on the first opening 111, and the transmission rod limiting groove 112 is used for limiting the displacement of the transmission rod 200 along the axial sliding direction thereof. Still further, a transmission rod limiting slope 113 is disposed on a side of the transmission rod limiting groove 112 away from the first opening 111, and the transmission rod limiting slope 113 is used for limiting an inclination angle of the transmission rod 200.
By providing the transmission rod limiting groove 112 and the transmission rod limiting slope 113 on the first opening 111, the displacement and the inclination angle of the transmission rod 200 can be limited, thereby avoiding the transmission rod 200 from being separated from the first sliding hole 121 in the sliding body 120 due to the overlarge movement range.
As shown in fig. 14 and 15, as another embodiment, the sliding hole 110 has a cylindrical shape, and an axial direction of the sliding hole 110 is parallel to an axial direction of the sleeve 100; the end of the sliding hole 110 is provided with a second opening 114 for inserting the transmission rod 200; the sliding body 120 is spherical, and the sliding body 120 is rotatably disposed in the sliding hole 110.
When the two shafts of the compressor are offset in the horizontal direction, the vertical direction or between the horizontal direction and the vertical direction, the transmission rod 200 drives the sliding body 120 to rotate, so that the spatial dislocation mode of the two shafts of the compressor is adapted.
As an implementation manner, each sliding body 120 is provided with a second sliding hole, and one end of the transmission rod 200 is slidably disposed in the second sliding hole. By moving the transmission rod 200 within the respective two sliding bodies 120, the effective transmission length of the transmission rod 200 and thus the distance of relative movement of the two sleeves 100 can be varied. This further increases the relative movement pattern between the two sleeves 100, enabling the shaft drive to accommodate a more varied misalignment pattern of the two shafts of the compressor.
Further, an annular limiting slope 115 is disposed on the second opening 144 along the edge of the second opening 144, and the annular limiting slope 115 is used for limiting the inclination angle of the transmission rod 200. This prevents the drive rod 200 from being separated from the second slide hole due to an excessive movement range.
In other embodiments, the driving rods 200 may be movably connected to the sleeve 100 in other manners, for example, two ends of each driving rod 200 are connected to the sleeve 100 through universal joints. When the two shafts of the compressor are offset in the horizontal direction, the vertical direction or between the horizontal direction and the vertical direction, the transmission rod 200 drives the universal joint to rotate, so that the dislocation mode of the two shafts of the compressor is adapted.
Further, the transmission rod 200 is a telescopic transmission rod, so that the effective transmission length of the transmission rod 200 can be changed, and thus the distance of the relative movement of the two sleeves 100 can be changed. This further increases the relative movement pattern between the two sleeves 100, enabling the shaft drive to accommodate a more varied misalignment pattern of the two shafts of the compressor. In this embodiment, instead of the above-described structure in which the end portion of the transmission rod 200 is slidably disposed in the first slide hole 121, and the end portion of the transmission rod 200 is slidably disposed in the second slide hole, the present invention may be applied.
In other embodiments, the sleeve 100 may be provided with a number of receiving slots corresponding to the number of the transmission rods 200; the end of the transmission rod 200 is disposed in the accommodating groove, and the end of the transmission rod 200 can swing in the accommodating groove, move along the axial direction of the transmission rod 200 and rotate around the axial direction of the transmission rod 200, so as to realize the movable connection of the transmission rod 200 and the sleeve 100.
Further, an annular limiting groove is formed in the end portion of the transmission rod 200, limiting protrusions are arranged at the opening of the accommodating groove relatively, the limiting protrusions are clamped in the annular limiting groove, and spaces are formed between the limiting protrusions and the bottom surface and the side surfaces of the annular limiting groove. The annular limiting groove and the limiting protrusion are used for limiting the displacement and the inclination angle of the transmission rod 200, so that the transmission rod 200 can be prevented from being separated from the accommodating groove.
In addition, referring to fig. 13, the number of the driving rods 200 provided between the sleeves 100 may be 3, but may be 4 or more. The ends of the plurality of transmission rods 200 are uniformly distributed on the sleeve 100 with the rotation center of the corresponding sleeve 100 as the center of circle, thereby enabling the transmission of larger torque. The rotation center of the sleeve 100 refers to the center of rotation of the sleeve 100 driven by the transmission shaft 300 connected to the sleeve 100. This embodiment can be applied to the above-described structure modes such as the outer joint and the accommodation groove.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (9)
1. A shaft transmission, characterized by comprising two sleeves (100) and at least two transmission rods (200); the at least two transmission rods (200) are arranged between the two sleeves (100) at intervals; one side of each sleeve (100) far away from the transmission rod (200) is connected with a transmission shaft (300); two ends of each transmission rod (200) are respectively and movably connected with two sleeves (100);
each sleeve (100) is provided with sliding holes (110) with the number corresponding to that of the transmission rods (200), each sliding hole (110) is internally provided with a sliding body (120), each sliding body (120) is slidably arranged in each sliding hole (110), and each sliding body (120) can rotate relative to each sliding hole (110) and can axially move along each sliding hole (110); a first sliding hole (121) is formed in each sliding body (120), and one end of the transmission rod (200) is arranged in the first sliding hole (121) in a sliding mode; the sliding device is characterized in that a first opening (111) used for allowing the transmission rod (200) to pass through is formed in the side wall of the sliding hole (110), a transmission rod limiting groove (112) is formed in the first opening (111), the transmission rod limiting groove (112) is used for limiting displacement of the transmission rod (200) along the axial sliding direction of the transmission rod, a transmission rod limiting inclined surface (113) is formed in one side, away from the first opening (111), of the transmission rod limiting groove (112), and the transmission rod limiting inclined surface (113) is used for limiting the inclination angle of the transmission rod (200).
2. The shaft transmission according to claim 1, characterized in that each end of the at least two transmission rods (200) is evenly distributed over the sleeve (100) with the centre of rotation of the respective sleeve (100) as a centre of circle.
3. The shaft transmission according to claim 1, characterized in that the sliding hole (110) is cylindrical and the sliding body (120) is spherical.
4. A shaft transmission according to claim 3, characterized in that the sliding bore (110) is arranged at an angle to the radial direction of the sleeve (100).
5. The shaft transmission according to claim 1, characterized in that the transmission rod (200) is a telescopic transmission rod.
6. The shaft transmission according to claim 1, characterized in that the sliding hole (110) is cylindrical, the axial direction of the sliding hole (110) being parallel to the axial direction of the sleeve (100); a second opening (114) for inserting the transmission rod (200) is formed at the end part of the sliding hole (110); the sliding body (120) is spherical, and the sliding body (120) is rotatably arranged in the sliding hole (110).
7. The shaft transmission device according to claim 6, wherein a second slide hole is provided on each slide body (120), and one end of the transmission rod (200) is slidably provided in the second slide hole.
8. The shaft transmission according to claim 7, characterized in that an annular limiting ramp (115) is provided on the second opening (114) along the edge of the second opening (114), the annular limiting ramp (115) being used to define the inclination angle of the transmission rod (200).
9. The shaft transmission according to claim 1, characterized in that at least two of the transmission rods (200) are arranged in parallel and spaced apart relationship between two of the sleeves (100).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710343370.9A CN106979250B (en) | 2017-05-16 | 2017-05-16 | Shaft transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710343370.9A CN106979250B (en) | 2017-05-16 | 2017-05-16 | Shaft transmission device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106979250A CN106979250A (en) | 2017-07-25 |
| CN106979250B true CN106979250B (en) | 2023-10-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710343370.9A Active CN106979250B (en) | 2017-05-16 | 2017-05-16 | Shaft transmission device |
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| Country | Link |
|---|---|
| CN (1) | CN106979250B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3823576A (en) * | 1972-08-22 | 1974-07-16 | Sterling Heights | Univeral joint for vehicle steering column |
| GB2030268A (en) * | 1978-07-21 | 1980-04-02 | Arteaga Ag | Universal joints |
| JPS61262231A (en) * | 1985-05-14 | 1986-11-20 | Sakai Seisakusho:Kk | Shaft joint |
| US4894045A (en) * | 1987-06-05 | 1990-01-16 | Hitachi, Ltd. | Universal joint having driving pins parallel to one of coupled shafts and swingably and radially slidable to the other shaft |
| US5129797A (en) * | 1990-05-21 | 1992-07-14 | Hitachi, Ltd. | Equal velocity universal joint and axial piston pump motor device using the joint |
| CN1548784A (en) * | 2003-05-07 | 2004-11-24 | 曹江浪 | Ball socketed piston universal couplings |
| CN206816697U (en) * | 2017-05-16 | 2017-12-29 | 珠海格力电器股份有限公司 | Shaft transmission device |
-
2017
- 2017-05-16 CN CN201710343370.9A patent/CN106979250B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3823576A (en) * | 1972-08-22 | 1974-07-16 | Sterling Heights | Univeral joint for vehicle steering column |
| GB2030268A (en) * | 1978-07-21 | 1980-04-02 | Arteaga Ag | Universal joints |
| JPS61262231A (en) * | 1985-05-14 | 1986-11-20 | Sakai Seisakusho:Kk | Shaft joint |
| US4894045A (en) * | 1987-06-05 | 1990-01-16 | Hitachi, Ltd. | Universal joint having driving pins parallel to one of coupled shafts and swingably and radially slidable to the other shaft |
| US5129797A (en) * | 1990-05-21 | 1992-07-14 | Hitachi, Ltd. | Equal velocity universal joint and axial piston pump motor device using the joint |
| CN1548784A (en) * | 2003-05-07 | 2004-11-24 | 曹江浪 | Ball socketed piston universal couplings |
| CN206816697U (en) * | 2017-05-16 | 2017-12-29 | 珠海格力电器股份有限公司 | Shaft transmission device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106979250A (en) | 2017-07-25 |
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