CN106979250A - Shaft drive - Google Patents
Shaft drive Download PDFInfo
- Publication number
- CN106979250A CN106979250A CN201710343370.9A CN201710343370A CN106979250A CN 106979250 A CN106979250 A CN 106979250A CN 201710343370 A CN201710343370 A CN 201710343370A CN 106979250 A CN106979250 A CN 106979250A
- Authority
- CN
- China
- Prior art keywords
- drive link
- drive
- slide
- hole
- sleeve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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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
Abstract
The present invention relates to axle drive technology field, more particularly to a kind of shaft drive, including two sleeves and at least two drive links；At least two drive link intervals are arranged between two sleeves；Each side of the sleeve away from drive link is connected with power transmission shaft；The two ends of each drive link are flexibly connected with two sleeves respectively.The shaft drive that the present invention is provided, when the motor shaft and jackshaft on compressor not enough or the problem of assembling make above-mentioned two axle misplace due to electric machine support precision, motor shaft and jackshaft can make connected sleeve mutual dislocation.And be to be flexibly connected between drive link and sleeve, so that relative to two sleeves of drive link are moved so that between two sleeves can relative motion, to make up the change of two axle relative positions, be not in that axle is stuck situation about can not rotate, therefore, it is possible to reliable transmission power.
Description
Technical field
The present invention relates to axle drive technology field, more particularly to a kind of shaft drive.
Background technology
Guide vane at centrifugal compressor air inlet, which plays a part of changing, enters air current flow direction, to compressor
Runnability influence is very big.The opening angle of guide vane is driven by motor to be changed, because guide vane is apart from each other with motor,
So the transmission of power can only be realized by intermediate transmission system.Conventional transmission system scheme is by three axles (motor shaft, centre
Axle, guide vane axle) and between centers power transmission parts composition is realized, as shown in Figure 1.Due to guide vane axle and jackshaft all
On compressor housing, and there is a certain distance, so being easy to ensure by machining the depth of parallelism of two axles, then using tooth
Wheel reliable transmission realizes that power is transmitted.
In the case of Theoretical Design, motor shaft and jackshaft have good axiality, it is usually the case that primary transmission is filled
Putting can realize that power is transmitted using internal gear pair engagement, key connection etc., as shown in Figure 2.But motor is by screw thread and motor
Support connect, then electric machine support is connected by screw thread with compressor housing, due to electric machine support mismachining tolerance (sheet metal component or
Machined piece) and rigging error presence, in theory coaxial motor shaft and jackshaft assembling after the completion of usually occur it is larger
Skew, and along with the inclination to a certain degree of axle, two axles turn into spatial intersecting axle, and such scheme generally requires tooth or key very
Good engagement could normally be run.If occurring larger skew or angle inclination between two axles, it is possible to assembling occur tired
May also occur axle in the problem of hardly possible can not even be assembled, running and occur local severe crush, or axle with transmission device
Being stuck to rotate, and the phenomenon that parts moderate finite deformation even results in damage occur.
In order to solve the problems, such as axle axiality, prior art mainly fabricates precision by improving electric machine support, and
Later stage installation process is realized by increasing and decreasing or polishing pad, can so be increased manufacturing cost, be also brought along the inconvenience of assembling.
The content of the invention
Based on this, it is necessary to for asking that the skew or inclination actually between axle and axle lead to not normally to run
There is provided a kind of shaft drive that can solve the problem that the transmission problem between small degree spatial intersecting axle for topic.
Above-mentioned purpose is achieved through the following technical solutions：
A kind of shaft drive, including two sleeves and at least two drive links；The setting at least two drive link intervals
Between two sleeves；Each side of the sleeve away from drive link is connected with power transmission shaft；The two ends of each drive link are respectively with two
Individual sleeve is flexibly connected.
In one of the embodiments, each end of at least two drive links using the center of rotation of corresponding sleeve as
The center of circle is evenly distributed on sleeve.
In one of the embodiments, be provided with each sleeve it is corresponding with drive link quantity slide hole, it is each sliding
Row is provided with slide mass in hole；The two ends of drive link are connected with slide mass respectively, to realize that drive link is flexibly connected with sleeve.
In one of the embodiments, slide that hole is cylindrical, slide the radially extending axially along sleeve in hole；Slide
The first opening for being passed through for drive link is provided with the side wall in hole；Slide mass is spherical, and slide mass, which is slidably installed in, to be slided in hole,
And slide mass can be rotated relative to hole is slided and can moved axially along hole is slided.
In one of the embodiments, the first slide opening is provided with each slide mass, one end of drive link is slidably installed in
In one slide opening.
In one of the embodiments, drive link stopper slot is provided with the first opening, drive link stopper slot is used to limit
Drive link is along itself displacement in axial sliding.
In one of the embodiments, drive link stopper slot away from first opening side be provided with drive link it is spacing tiltedly
Face, the spacing inclined-plane of drive link is used for the angle of inclination for limiting drive link.
In one of the embodiments, slide that hole is cylindrical, slide hole axial direction and sleeve it is axially in parallel；Slide hole
End offer for drive link plug second opening；Slide mass is spherical, and slide mass, which is rotatably arranged on, to be slided in hole.
In one of the embodiments, the second slide opening is provided with each slide mass, one end of drive link is slidably installed in
In two slide openings.
In one of the embodiments, in the second opening, the edge of the second opening is provided with annular stop inclined-plane, ring
The spacing inclined-plane of shape is used for the angle of inclination for limiting drive link.
Above-mentioned shaft drive, when the motor shaft and jackshaft on compressor not enough or are assembled due to electric machine support precision
The problem of and when above-mentioned two axle is misplaced, motor shaft and jackshaft can make connected sleeve mutual dislocation.And drive link with
To be flexibly connected between sleeve, so that relative to two sleeves of drive link are moved so that can between two sleeves
Relative motion, is not in that axle is stuck situation about can not rotate, therefore, it is possible to reliable to make up the change of two axle relative positions
Transmission power.
Brief description of the drawings
The schematic diagram for the intermediate transmission structure that Fig. 1 rotates for traditional motor control guide vane；
Fig. 2 is the transmission cooperation schematic diagram of traditional motor shaft and jackshaft；
The structural representation for the shaft drive that Fig. 3 provides for one embodiment of the invention；
Fig. 4 is the structural representation of the sleeve of shaft drive provided in an embodiment of the present invention；
Fig. 5 is Fig. 4 A-A sectional views；
Fig. 6 is the structural representation of the drive link of shaft drive provided in an embodiment of the present invention；
Fig. 7 is the structural representation of the slide mass of shaft drive provided in an embodiment of the present invention；
Fig. 8 is the state diagram of the vertical radial deflection of shaft drive provided in an embodiment of the present invention；
The state diagram that Fig. 9 offsets for the horizontal radial of shaft drive provided in an embodiment of the present invention；
Figure 10 is the inclined state diagram in vertical axial direction of shaft drive provided in an embodiment of the present invention；
Figure 11 is the inclined state diagram of horizontal axis of shaft drive provided in an embodiment of the present invention；
Figure 12 is shaft drive provided in an embodiment of the present invention in the state diagram that two axles are in spatial intersecting；
The structural representation of the sleeve for the shaft drive that Figure 13 provides for another embodiment of the present invention；
The structural representation of the sleeve for the shaft drive that Figure 14 provides for further embodiment of this invention；
Figure 15 is Figure 14 B-B sectional views.
Wherein：
100- sleeves；
110- slides hole；111- first is open；112- drive link stopper slots；The spacing inclined-plane of 113- drive links；
114- second is open；115- annular stops inclined-plane；
120- slide masses；The slide openings of 121- first；
200- drive links；
300- power transmission shafts.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, by the following examples, and with reference to attached
Figure, the shaft drive of the present invention is further elaborated.It should be appreciated that specific embodiment described herein is only used
To explain the present invention, it is not intended to limit the present invention.
It should be noted that when element is referred to as " being fixed on " another element, it can be directly on another element
Or can also have element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.On the contrary, when element be referred to as " directly existing " another element " on " when,
In the absence of intermediary element.Term as used herein " vertically ", " level ", "left", "right" and similar statement are
For illustrative purposes.
The shaft drive of the present invention, possesses stronger fault-tolerant ability, can effectively solve two axles while existing radially
Between centers transmission problem under the complex situations such as skew and angle.The present invention is applied to centrifugal compressor air inlet with shaft drive
The power of the guide vane at place transmits to illustrate, it is therefore an objective to solve the spatial intersecting transmission problem of motor shaft and jackshaft,
Ensure the normal delivery of power, without tired to solve assembling by electric machine support and compressor housing processing and manufacturing precision is improved
The problem of hardly possible can not even be assembled.
As shown in Fig. 3 to Fig. 7, the present invention one implements a kind of shaft drive provided, including two sleeves 100 and at least
Two drive links 200；What at least two drive links 200 were spaced is arranged between two sleeves 100；Each sleeve 100 is away from biography
The side of lever 200 is connected with power transmission shaft 300；The two ends of each drive link 200 are flexibly connected with two sleeves 100 respectively.
Wherein, the motor shaft on compressor is connected with one of sleeve 100, and jackshaft is connected with another sleeve 100,
Sleeve 100 and axle using axis hole and the fit system of axle, sleeve 100 can by the structures such as singly-bound, spline or square groove by itself
Rotation passes to axle, as long as can guarantee that the structure synchronous with axle rotation.
And at least two drive links 200 between two sleeves 100 can be parallel to each other, it may not be mutually flat
Capable.It is preferred that the parallel interval of at least two drive link 200 is arranged between two sleeves 100.
When the motor shaft and jackshaft on compressor due to electric machine support precision not enough or assembling the problem of and make above-mentioned
When two axles misplace, motor shaft and jackshaft can make the connected mutual dislocation of sleeve 100.And drive link 200 and sleeve 100 it
Between for be flexibly connected so that relative to two sleeves 100 of drive link 200 are moved so that energy between two sleeves 100
Enough relative motions, and then the dislocation of motor shaft and jackshaft is decomposed, are not in that axle is stuck situation about can not rotate,
Power can reliably be transmitted.
And the drive link 200 in above-described embodiment has a variety of with the mode that sleeve 100 is flexibly connected, it can implement as one kind
Mode, be provided with each sleeve 100 it is corresponding with the quantity of drive link 200 slide hole 110, each slide in hole 110
It is provided with slide mass 120；The two ends of drive link 200 are connected with slide mass 120 respectively, to realize that drive link 200 is lived with sleeve 100
Dynamic connection.
Wherein, the shape for sliding hole 110 and slide mass 120 can be various shapes, for example：It can be circle to slide hole 110
Cylindrical hole, slot or square hole etc., and slide mass 120 can be cylinder, spheroidal or square bodily form etc.
Deng as long as can realize that slide mass 120 is sliding motion in hole 110.
And as a kind of enforceable mode, slide that hole 110 is cylindrical, slide hole 110 axially along sleeve 100
Radially extend；Slide the first opening 111 being provided with the side wall in hole 110 for being passed through for drive link 200；Slide mass 120 is
Spherical, slide mass 120, which is slidably installed in, to be slided in hole 110, and slide mass 120 can be rotated and can be along sliding hole relative to hole 110 is slided
110 axial movements.
When the above-mentioned two axles in the vertical direction of compressor shifts, the meeting in the vertical direction of drive link 200 inclines
Tiltedly, now drive link 200 can drive slide mass 120 sliding rotation in hole 110, then a sleeve 100 is relative to another set
Cylinder 100 in the vertical directions movement (such as Fig. 8), the skew to make up two axle in the vertical directions (offset distance is d1).Work as pressure
When above-mentioned two axle of contracting machine shifts in the horizontal direction, drive link 200 understands run-off the straight in the horizontal direction, now drive link
200 can drive slide mass 120 to be moved axially along hole 110 is slided, then a sleeve 100 is relative to another level side of sleeve 100
(such as Fig. 9) is moved up, to make up the skew of two axles in the horizontal direction (offset distance is d2).When above-mentioned two axle of compressor exists
On vertical direction during run-off the straight, drive link 200 understands in the vertical direction run-off the straight, and now drive link 200 can drive slip
Body 120 is sliding rotation in hole 110, then a sleeve 100 is tilted (as schemed relative to another in the vertical direction of sleeve 100
10), to make up the inclinations of two axle in the vertical directions (β is in angle of inclination).When above-mentioned two axle of compressor is sent out in the horizontal direction
It is raw when tilting, drive link 200 can run-off the straight in the horizontal direction, now drive link 200 can drive slide mass 120 along sliding hole
110 axial movements, then a sleeve 100 is relative to inclination (such as Figure 11) in another horizontal direction of sleeve 100, to make up two axles
Inclination in the horizontal direction (angle of inclination is α).
Certainly, the motion mode of two sleeves 100 can be with four kinds of motion modes of summary, to adapt to compressor above-mentioned two
The dislocation (such as Figure 12) of axle spatially.
In addition, slide mass 120 is designed into globulate, it is also beneficial to improve the stability that drive link 200 is moved so that transmission
Bar 200 moves more smooth.
In other embodiments, the columned axial direction for sliding hole 110 can also be set between the radial direction of sleeve 100 in angle
Put, it will be understood that the angle should be smaller, in order to which drive link 200 drives slide mass 120 sliding hole in run-off the straight
Slip in 110.
As a kind of enforceable mode, the first slide opening 121, the transmission are provided with each slide mass 120
One end of bar 200 is slidably installed in first slide opening 121.Moved by drive link 200 in corresponding two slide masses 120,
So as to change effective drive length of drive link 200, and then change the distance of two relative motions of sleeve 100.So may be used
With further increase by two sleeves 100 between relative to motion mode so that shaft drive can adapt on compressor
State more various dislocation mode of two axles.
Referring to Fig. 5, further, drive link stopper slot 112 is provided with the first opening 111, drive link stopper slot 112 is used
In limiting drive link 200 along itself displacement in axial sliding.Yet further, drive link stopper slot 112 is away from the first opening 111
Side be provided with the spacing inclined-plane 113 of drive link, the spacing inclined-plane 113 of drive link is used for the angle of inclination for limiting drive link 200.
By being provided with drive link stopper slot 112 and the spacing inclined-plane 113 of drive link in the first opening 111, it can limit
Determine displacement and the angle of inclination of drive link 200, thus avoid because the range of movement of drive link 200 is excessive and from slide mass
Depart from the first slide opening 121 in 120.
As shown in Figure 14 and Figure 15, as another enforceable mode, slide that hole 110 is cylindrical, slide hole 110
It is axially axially in parallel with sleeve 100；The end for sliding hole 110 offers the second opening 114 plugged for drive link 200；It is sliding
Kinetoplast 120 is spherical, and slide mass 120, which is rotatably arranged on, to be slided in hole 110.
When above-mentioned two axle of compressor in the horizontal direction, between vertical mode or level and vertical direction on shift,
During inclination, drive link 200 can drive slide mass 120 to rotate, so as to adapt to the spatial offset mode of above-mentioned two axle of compressor.
As a kind of enforceable mode, the second slide opening, the drive link are provided with each slide mass 120
200 one end is slidably installed in second slide opening.Moved by drive link 200 in corresponding two slide masses 120, so as to
To change effective drive length of drive link 200, and then change the distance of two relative motions of sleeve 100.One can so be entered
Between two sleeves 100 of increase of step relative to motion mode so that shaft drive can adapt to above-mentioned two axle of compressor
More various dislocation mode.
Further, in the second opening 144, the edge of the second opening 144 is provided with annular stop inclined-plane 115, ring
The spacing inclined-plane 115 of shape is used for the angle of inclination for limiting drive link 200.Can so avoid the range of movement of drive link 200 excessive and
Depart from out of second slide opening.
In other embodiments, drive link 200 can also be other modes with being flexibly connected for sleeve 100, for example, each
The two ends of drive link 200 are connected with sleeve 100 by universal joint.When above-mentioned two axle of compressor in the horizontal direction, vertical mode
Or between level and vertical direction on shift, when tilting, drive link 200 can drive universal joint to rotate, so as to adapt to pressure
The dislocation mode of above-mentioned two axle of contracting machine.
Further, drive link 200 is telescopic drive link, so that effective drive length of drive link 200 can become
Change, and then the distance of two relative motions of sleeve 100 can be changed.So can further it increase between two sleeves 100
Relative to motion mode so that shaft drive can adapt to more various dislocation mode of above-mentioned two axle of compressor.Should
The end that embodiment can also substitute above-mentioned drive link 200 is slidably installed in the first slide opening 121, and the end of drive link 200 is slided
It is located at the frame mode of the second slide opening.
In other embodiments, can be set on sleeve 100 has storage tank corresponding with the quantity of drive link 200；Drive link 200
End be arranged in storage tank, and the end of drive link 200 can be swung in storage tank, along the axial movement of drive link 200
And around the axial-rotation of drive link 200, to realize being flexibly connected for drive link 200 and sleeve 100.
Further, the end of drive link 200 is provided with annular spacing groove, the opening of storage tank and is oppositely arranged limited location
Projection, spacing preiection is arranged in annular spacing groove, and is had between spacing preiection and the bottom surface and side of annular spacing groove
There is interval.Annular spacing groove and spacing preiection are used for displacement and the angle of inclination for limiting drive link 200, can so avoid transmission
Bar 200 departs from out of storage tank.
In addition, referring to Figure 13, it can be 3 to be arranged on the drive link 200 between sleeve 100, naturally it is also possible to for 4 very
It is extremely more.The end of multiple drive links 200 is evenly distributed on sleeve 100 using the center of rotation of corresponding sleeve 100 as the center of circle
On, so as to realize the transmission of high torque.Wherein, the center of rotation of sleeve 100 refer to sleeve 100 with sleeve 100
The center rotated under the drive of the power transmission shaft 300 of connection.The embodiment is readily applicable to the knots such as above-mentioned export-oriented section, storage tank
In structure mode.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope of this specification record is all considered to be.
Embodiment described above only expresses the several embodiments of the present invention, and it describes more specific and detailed, but simultaneously
Can not therefore it be construed as limiting the scope of the patent.It should be pointed out that coming for one of ordinary skill in the art
Say, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of shaft drive, it is characterised in that including two sleeves (100) and at least two drive links (200)；It is described extremely
What few two drive links (200) were spaced is arranged between two sleeves (100)；Each sleeve (100) is away from described
The side of drive link (200) is connected with power transmission shaft (300)；The two ends of each drive link (200) respectively with two sets
Cylinder (100) is flexibly connected.
2. shaft drive according to claim 1, it is characterised in that at least two drive link (200) it is each
Center of rotation of the end using the corresponding sleeve (100) is evenly distributed on the sleeve (100) as the center of circle.
3. shaft drive according to claim 1, it is characterised in that be provided with each sleeve (100) with
Drive link (200) quantity slides hole (110) accordingly, and each described slide in hole (110) is provided with slide mass
(120)；The two ends of the drive link (200) are connected with the slide mass (120) respectively, with realize the drive link (200) with
The sleeve (100) is flexibly connected.
4. shaft drive according to claim 3, it is characterised in that the hole (110) of sliding is cylindrical, the cunning
The radially extending axially along the sleeve (100) in row hole (110)；Being provided with the side wall for sliding hole (110) is used for
The first opening (111) passed through for the drive link (200)；The slide mass (120) is spherical, and the slide mass (120) is sliding
Be located at it is described slide in hole (110), and the slide mass (120) can be rotated and can be along described relative to the hole (110) of sliding
Slide hole (110) axial movement.
5. shaft drive according to claim 4, it is characterised in that be provided with each slide mass (120)
First slide opening (121), one end of the drive link (200) is slidably installed in first slide opening (121).
6. shaft drive according to claim 5, it is characterised in that be provided with transmission in first opening (111)
Bar stopper slot (112), the drive link stopper slot (112) is used to limit the drive link (200) along itself position in axial sliding
Move.
7. shaft drive according to claim 6, it is characterised in that the drive link stopper slot (112) is away from described
The side of first opening (111) is provided with the spacing inclined-plane of drive link (113), and the spacing inclined-plane of drive link (113) is used to limit
The angle of inclination of the drive link (200).
8. shaft drive according to claim 3, it is characterised in that the hole (110) of sliding is cylindrical, the cunning
The axial direction in row hole (110) is axially in parallel with the sleeve (100)；The end for sliding hole (110) is offered to be passed for described
The second opening (114) that lever (200) is plugged；The slide mass (120) is spherical, and the slide mass (120) is rotatably arranged on
It is described to slide in hole (110).
9. shaft drive according to claim 8, it is characterised in that be provided with each slide mass (120)
Second slide opening, one end of the drive link (200) is slidably installed in second slide opening.
10. shaft drive according to claim 9, it is characterised in that in second opening (114), along described
The edge of second opening (114) is provided with annular stop inclined-plane (115), and the annular stop inclined-plane (115) is described for limiting
The angle of inclination of drive link (200).
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 true CN106979250A (en) | 2017-07-25 |
| CN106979250B CN106979250B (en) | 2023-10-03 |
Family
ID=59343814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710343370.9A Active CN106979250B (en) | 2017-05-16 | 2017-05-16 | Shaft transmission device |
Country Status (1)
| 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 drive |
-
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 drive |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106979250B (en) | 2023-10-03 |
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