CN107275132A - Zhong Ya dual supply operations mechanism - Google Patents
Zhong Ya dual supply operations mechanism Download PDFInfo
- Publication number
- CN107275132A CN107275132A CN201710708731.5A CN201710708731A CN107275132A CN 107275132 A CN107275132 A CN 107275132A CN 201710708731 A CN201710708731 A CN 201710708731A CN 107275132 A CN107275132 A CN 107275132A
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- Prior art keywords
- plate
- shaped
- interlocking
- power operation
- connecting rod
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
- H01H9/24—Interlocking, locking, or latching mechanisms for interlocking two or more parts of the mechanism for operating contacts
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Abstract
The present invention relates to a kind of Zhong Ya dual supply operations mechanism, including upper power operation mechanism, lower power operation mechanism and middle frame, the upper power operation mechanism, lower power operation mechanism are separately mounted to the upper and lower ends of middle frame；Power operation mechanism includes mounting bracket, L-shaped bent plate and spline spindle, and L-shaped bent plate is provided with closing transmission mechanism with spline spindle；L-shaped jam plate is additionally provided with mounting bracket, interlocking transmission mechanism is set between the L-shaped jam plate and spline spindle, is rotated through L-shaped jam plate and realizes that the locking to L-shaped bent plate is spacing；Synchronising (connecting) rod is provided between upper interlocking transmission mechanism and lower interlocking transmission mechanism.After any one power operation mechanism carries out combined floodgate operation in Zhong Ya dual supply operations mechanism, can drive above and below two L-shaped jam plates rotate, limitation is done combined floodgate to two L-shaped bent plates up and down and rotated.
Description
Technical field
The present invention relates to a kind of Zhong Ya dual supply operations mechanism.
Background technology
Double-power supply breaker has two-way power operation mechanism, and Liang Ge power operations mechanism is linked together by centre, is
Lift the security performance of Zhong Ya dual supply operations mechanism, it is desirable to which another road power supply can not be powered after power supply is powered all the way, otherwise can
Cause circuit burnout, security incident can be caused when serious, so double-power supply breaker requires there is reliable interlocking between two-way power supply,
Ensure that another road power supply can not be powered after power supply energization all the way.
The content of the invention
The technical problem to be solved in the present invention is：Overcoming the deficiencies in the prior art, there is provided dual supply operation machine is pressed in one kind
Structure, solves the defect that conventional Zhong Ya dual supply operations mechanism is unable to interlock safety difference.
The technical solution adopted for the present invention to solve the technical problems is：A kind of Zhong Ya dual supply operations mechanism, including it is upper
Power operation mechanism, lower power operation mechanism and middle frame, the upper power operation mechanism, lower power operation mechanism are pacified respectively
Mounted in the upper and lower ends of middle frame；
Power operation mechanism includes mounting bracket, L-shaped bent plate and the spline spindle for controlling on/off, the L-shaped bent plate
It is arranged on through torsion spring elastic rotary on mounting bracket, the L-shaped bent plate is provided with closing transmission mechanism with spline spindle；It is described to install
The L-shaped jam plate rotated for limiting L-shaped bent plate to do is additionally provided with frame, the L-shaped jam plate is rotatably arranged on mounting bracket, institute
Setting interlocking transmission mechanism between L-shaped jam plate and spline spindle is stated, the interlocking transmission mechanism transmission work drives L-shaped jam plate
Rotation, rotates through L-shaped jam plate and realizes that the locking to L-shaped bent plate is spacing；
Synchronising (connecting) rod is provided between upper interlocking transmission mechanism and lower interlocking transmission mechanism, one of interlocking transmission mechanism motion
When, synchronized connecting rod drives another to interlock transmission mechanism transmission, so that two L-shaped jam plates do synchronous rotary up and down.
Further, the closing transmission mechanism includes first connecting rod, closing magnet master part, combined floodgate cam and connecting lever；
The closing magnet master part is rotatably provided on mounting bracket, and the combined floodgate cam is arranged on the energy storage rotating shaft of power operation mechanism
On, the connecting lever be arranged on spline spindle on, the first connecting rod upper and lower ends respectively with L-shaped bent plate and closing magnet master part one
End connection, the closing magnet master part other end is used to push against combined floodgate cam and then limits energy storage axis of rotation, makes power operation
Mechanism realizes energy storage；The combined floodgate cam and connecting lever job mix, the combined floodgate cam hit when doing combined floodgate rotation connecting lever and then
Drive spline spindle rotation.
Further, the interlocking transmission mechanism includes interlock cam, interlocking slide plate and compression spring, and the interlocking is convex
Wheel is arranged on spline spindle, and the interlocking slide plate is slidably connected with mounting bracket, described to interlock above and below slide plate does on mounting bracket
Elastic movement, the interlock cam coordinates with interlocking slide plate lower end；The compression spring is arranged on interlocking slide plate upper end, compresses bullet
Spring is connected with L-shaped jam plate；
The spline spindle rotation drives interlock cam rotation, and interlock cam drives interlocking slide plate to move upwards, interlocks slide plate band
Below dynamic L-shaped jam plate to L-shaped bent plate, combined floodgate rotation is done for limiting L-shaped bent plate；
The synchronising (connecting) rod upper and lower ends are connected with upper interlocking slide plate and lower interlocking slide plate respectively, above and below one of interlocking slide plate
During motion, synchronized connecting rod drives another to interlock slide plate and moved up and down, so that two L-shaped jam plates do synchronous rotary up and down.
Further, upper spline main shaft is provided with crank, and lower spline spindle is provided with lower crank, upper crank and lower crank
Between be connected with lock shaft connecting rod, the lock shaft small end is rotated with upper crank through upper pin and is connected, the lock shaft connecting rod lower end
Chute is offered, the lock shaft connecting rod lower end is connected through lower bearing pin with lower crank, and the lower bearing pin is passed through from chute；
The lock shaft small end is located on rear side of upper spline main shaft, and the lock shaft connecting rod lower end is located on front side of lower spline spindle；When
When the rotation of upper spline spindle axis counterclockwise drives upper power operation mechanism operation, upper crank handle turns lock shaft connecting rod is moved upwards, lower pin
Axle is as chute bottom.
The beneficial effects of the invention are as follows：Any one power operation mechanism is closed in Zhong Ya dual supply operations mechanism
After lock operation, can drive above and below two L-shaped jam plates rotate, limitation is done combined floodgate to two L-shaped bent plates up and down and rotated.
Two spline spindles are connected by lock shaft connecting rod up and down, after one of spline spindle does combined floodgate rotation, band
The distance of dynamic lock shaft one chute of link motion, so that lock shaft connecting rod limits another spline spindle rotation.
Brief description of the drawings
The present invention is further described below in conjunction with the accompanying drawings.
Fig. 1 is middle pressure dual supply operation mechanism side direction view；
Fig. 2 is single power operation structural scheme of mechanism；
Fig. 3 and Fig. 4 are middle pressure dual supply operation structural scheme of mechanism；
Fig. 5 is lock shaft connecting rod schematic diagram；
Wherein, 1, middle frame, 21, upper power operation mechanism, 22, lower power operation mechanism, 3, mounting bracket, 4, spline spindle, 5, L
Shape bent plate, 6, first connecting rod, 7, closing magnet master part, 8, combined floodgate cam, 9, connecting lever, 10, interlock cam, 11, interlocking slide plate,
12nd, L-shaped jam plate, 13, synchronising (connecting) rod, 14, lock shaft connecting rod, 141, chute.
Embodiment
Presently in connection with specific embodiment, the present invention is further illustrated.These accompanying drawings be simplified schematic diagram only with
Illustration illustrates the basic structure of the present invention, therefore it only shows the composition relevant with the present invention.
As shown in Figures 1 to 5, a kind of Zhong Ya dual supply operations mechanism, including upper power operation mechanism 21, lower power operation
Mechanism 22 and middle frame 1, upper power operation mechanism 21, lower power operation mechanism 22 are separately mounted to up and down the two of middle frame 1
End.
Power operation mechanism includes mounting bracket 3, L-shaped bent plate 5 and the spline spindle 4 for controlling on/off, and L-shaped is curved
Plate 5 is arranged on mounting bracket 3 through torsion spring elastic rotary, and L-shaped bent plate 5 is provided with closing transmission mechanism with spline spindle 4；Work as L-shaped
Can in time it be resetted in the presence of torsion spring after the triggering closing transmission mechanism operation of bent plate 5；It is additionally provided with mounting bracket 3 for limiting
L-shaped bent plate 5 processed does the L-shaped jam plate 12 rotated, and L-shaped jam plate 12 is rotatably arranged on mounting bracket 3, L-shaped jam plate 12 and spline spindle 4
Between interlocking transmission mechanism is set, interlocking transmission mechanism transmission work drives L-shaped jam plate 12 to rotate, rotated through L-shaped jam plate 12
Realize that the locking to L-shaped bent plate 5 is spacing.
Synchronising (connecting) rod 13 is provided between upper interlocking transmission mechanism and lower interlocking transmission mechanism, one of interlocking driver
When structure is moved, synchronized connecting rod 13 drives another interlocking transmission mechanism transmission, so that two L-shaped jam plates 12 do synchronization up and down
Rotation.
Closing transmission mechanism includes first connecting rod 6, closing magnet master part 7, combined floodgate cam 8 and connecting lever 9；Close a floodgate and keep sincere
Son 7 is rotatably provided on mounting bracket 3, and combined floodgate cam 8 is arranged in the energy storage rotating shaft of power operation mechanism, and connecting lever 9 is arranged on flower
On key main shaft 4, the upper and lower ends of first connecting rod 6 are connected with L-shaped bent plate 5 and the one end of closing magnet master part 7 respectively, closing magnet master part
7 other ends are used to push against combined floodgate cam 8 and then limit energy storage axis of rotation, power operation mechanism is realized energy storage；Combined floodgate cam 8
With the job mix of connecting lever 9, combined floodgate cam 8 hits connecting lever 9 and then drives spline spindle 4 to rotate when doing combined floodgate rotation.
Interlocking transmission mechanism includes interlock cam 10, interlocking slide plate 11 and compression spring, and interlock cam 10 is arranged on flower
On key main shaft 4, interlocking slide plate 11 be slidably connected with mounting bracket 3, interlocking slide plate 11 done on mounting bracket 3 above and below elastic movement, join
Spring is provided between lock slide plate 11 and mounting bracket 3, the spring is used to make interlocking slide plate 11 keep down movement tendency, mounting bracket
One section of vertical slot is offered on 3, pin is through the vertical slot on interlocking slide plate 11 and mounting bracket 3, for limiting interlocking slide plate 11
On mounting bracket 3.Interlock cam 10 coordinates with interlocking slide plate 11 lower end；Compression spring is arranged on interlocking slide plate 11 upper end, compression
Spring is connected with L-shaped jam plate 12.Interlock slide plate 11 to move upwards, compressed spring promotes L-shaped jam plate 12 to rotate.
The rotation of spline spindle 4 drives interlock cam 10 to rotate, and interlock cam 10 drives interlocking slide plate 11 to move upwards, interlocking
Slide plate 11 drives L-shaped jam plate 12 to the lower section of L-shaped bent plate 5, and combined floodgate rotation is done for limiting L-shaped bent plate 5；Synchronising (connecting) rod is two about 13
End is connected with upper interlocking slide plate and lower interlocking slide plate respectively, when one of interlocking slide plate moves up and down, the synchronized band of connecting rod 13
Move another interlocking slide plate 11 to move up and down, so that two L-shaped jam plates 12 do synchronous rotary up and down.
Include Liang Ge interlocking mechanisms altogether in the Zhong Ya dual supply operations mechanism of the present invention, one makes to two L-shaped bent plates 5
Interlocked, another is that two spline spindles 4 are interlocked.
During operation, it is assumed that upper power operation mechanism 21 is closed a floodgate, lower power operation mechanism 22 is standby, presses combined floodgate
Button, button drives upper L-shaped bent plate to rotate, and upper L-shaped bent plate drives upper closing magnet master part to move through first connecting rod 6, upper to close a floodgate
Limitation of the sincere sub- release to upper combined floodgate cam is kept, energy storage rotating shaft drives connecting lever, upper connecting lever band on combined floodgate cam rotating percussion
Dynamic upper spline main shaft does rotate counterclockwise, and upper spline main shaft is done after rotate counterclockwise, makes entirely to go up power operation mechanism 21 and protects
Hold energization job state；Upper spline main shaft, which drives, goes up interlock cam also rotate counterclockwise, and interlocking slide plate is moved upwards in push,
Due to the presence of synchronising (connecting) rod 13 so that two interlocking slide plates 11 are synchronized with the movement up and down；Upper L-shaped bent plate due to rotated torsion spring with
Mounting bracket 3 is connected, therefore after the rotation of upper L-shaped bent plate has triggered combined floodgate cam 8 and rotated, effect of the upper L-shaped bent plate in torsion spring
Under reset immediately；Upper interlocking slide plate drives upper L-shaped jam plate to rotate below supreme L-shaped bent plate, and lower interlocking slide plate drives lower L-shaped jam plate
Below rotation to lower L-shaped bent plate；Now, two L-shaped bent plates are interlocked about two 12 pairs of L-shaped jam plates up and down, prevent L-shaped curved
Plate 5 is rotated, now, and the upper combined floodgate operation of power operation mechanism 21, lower power operation mechanism 22 does not work, in stand-by state, this
When, timely someone's maloperation goes to press the switch knob of lower power operation mechanism 22, the lower L-shaped bent plate of lower power operation mechanism 22
Also it will not rotate, because lower L-shaped jam plate is located at below lower L-shaped bent plate, limit its rotation of closing a floodgate.In turn during operation, principle phase
Together, two L-shaped bent plates are interlocked after lower power operation mechanism 22 is started, or up and down about two 12 pairs of L-shaped jam plates.
Above is being interlocked to L-shaped bent plate 5（That is, button switch is interlocked）, main shaft is not realized and interlocked,
Up and down in Liang Ge power operations mechanism, real control power operation carries out being realized by spline spindle 4 for operation, because
This, to further ensure that the security of Zhong Ya dual supply operations mechanism, in addition it is also necessary to which two spline spindles 4 up and down are interlocked；
Therefore, lock shaft connecting rod 14 is just provided between two spline spindles 4 up and down.
Specifically, the Liang Ge power operations mechanism of the present invention is operation in the same direction, i.e. two spline spindles 4 are to do inverse
Hour hands do combined floodgate motion when rotating；Therefore, for realize between two spline spindles 4 interlock；Upper spline main shaft is provided with song
Handle, lower spline spindle is provided with lower crank, and lock shaft connecting rod 14, the upper end of lock shaft connecting rod 14 warp are connected between upper crank and lower crank
Upper pin is rotated with upper crank and is connected, and the lower end of lock shaft connecting rod 14 offers chute 141, and the lower end of lock shaft connecting rod 14 is through lower bearing pin with
Crank is connected, and lower bearing pin is passed through from chute 141.
The upper end of lock shaft connecting rod 14 is located on rear side of upper spline main shaft, and the lower end of lock shaft connecting rod 14 is located on front side of lower spline spindle；When
When the rotation of upper spline spindle axis counterclockwise drives upper 21 combined floodgate operation of power operation mechanism, upper crank handle turns lock shaft connecting rod 14 is transported upwards
Dynamic, lower bearing pin is as the bottom of chute 141, now, if lower spline spindle also will do combined floodgate operation, then lower spline spindle
Also have to do rotate counterclockwise, and because now lower bearing pin is in the bottom of chute 141, limits lower bearing pin and turn counterclockwise
It is dynamic, so, limit lower spline spindle operation.On the contrary, when only starting lower power operation mechanism 22, lower spline spindle is first counterclockwise
Rotation, lower bearing pin is rotated to the bottom of chute 141, and now, lock shaft connecting rod 14 will limit upper spline main shaft and do fortune of closing a floodgate counterclockwise
It is dynamic.
Using the above-mentioned desirable embodiment according to the present invention as enlightenment, by above-mentioned description, relevant staff is complete
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property scope is not limited to the content on specification, it is necessary to its technical scope is determined according to right.
Claims (4)
1. a kind of Zhong Ya dual supply operations mechanism, it is characterized in that, including upper power operation mechanism（21）, lower power operation mechanism
（22）And middle frame（1）, the upper power operation mechanism（21）, lower power operation mechanism（22）It is separately mounted to middle frame
（1）Upper and lower ends；
Power operation mechanism includes mounting bracket（3）, L-shaped bent plate（5）And for controlling the spline spindle of on/off（4）, institute
State L-shaped bent plate（5）Mounting bracket is arranged on through torsion spring elastic rotary（3）On, the L-shaped bent plate（5）With spline spindle（4）It is provided with
Closing transmission mechanism；The mounting bracket（3）On be additionally provided with for limiting L-shaped bent plate（5）Do the L-shaped jam plate rotated（12）, institute
State L-shaped jam plate（12）It is rotatably arranged on mounting bracket（3）On, the L-shaped jam plate（12）With spline spindle（4）Between be provided with connection
Transmission mechanism is locked, the interlocking transmission mechanism transmission work drives L-shaped jam plate（12）Rotation, through L-shaped jam plate（12）Rotation is realized
To L-shaped bent plate（5）Locking it is spacing；
Synchronising (connecting) rod is provided between upper interlocking transmission mechanism and lower interlocking transmission mechanism（13）, one of interlocking transmission mechanism
During motion, synchronized connecting rod（13）Another is driven to interlock transmission mechanism transmission, so that two L-shaped jam plates up and down（12）Do same
Step rotation.
2. Zhong Ya dual supply operations mechanism according to claim 1, it is characterized in that, the closing transmission mechanism includes first
Connecting rod（6）, closing magnet master part（7）, combined floodgate cam（8）And connecting lever（9）；The closing magnet master part（7）It is rotatably provided in
Mounting bracket（3）On, the combined floodgate cam（8）In the energy storage rotating shaft of power operation mechanism, the connecting lever（9）Installed in flower
Key main shaft（4）On, the first connecting rod（6）Upper and lower ends respectively with L-shaped bent plate（5）And closing magnet master part（7）One end is connected,
The closing magnet master part（7）The other end is used to push against combined floodgate cam（8）And then energy storage axis of rotation is limited, make power operation machine
Structure realizes energy storage；The combined floodgate cam（8）With connecting lever（9）Job mix, the combined floodgate cam（8）Hit and turn when doing combined floodgate rotation
Arm（9）And then drive spline spindle（4）Rotation.
3. Zhong Ya dual supply operations mechanism according to claim 1, it is characterized in that, the interlocking transmission mechanism includes interlocking
Cam（10）, interlocking slide plate（11）And compression spring, the interlock cam（10）It is arranged on spline spindle（4）On, it is described
Lock slide plate（11）With mounting bracket（3）It is slidably connected, the interlocking slide plate（11）In mounting bracket（3）On do above and below elastic movement, institute
State interlock cam（10）With interlocking slide plate（11）Lower end coordinates；The compression spring is arranged on interlocking slide plate（11）Upper end, compression
Spring and L-shaped jam plate（12）Connection；
The spline spindle（4）Rotation drives interlock cam（10）Rotation, interlock cam（10）Drive interlocking slide plate（11）Upwards
Motion, interlocks slide plate（11）Drive L-shaped jam plate（12）To L-shaped bent plate（5）Lower section, for limiting L-shaped bent plate（5）Do combined floodgate rotation
Turn；
The synchronising (connecting) rod（13）Upper and lower ends respectively with upper interlocking slide plate（11）With lower interlocking slide plate（11）Connection, one of them
Interlock slide plate（11）During up and down motion, synchronized connecting rod（13）Another is driven to interlock slide plate（11）Move up and down, so that on
Lower two L-shaped jam plates（12）Do synchronous rotary.
4. Zhong Ya dual supply operations mechanism according to claim 1, it is characterized in that, upper spline main shaft is provided with crank,
Lower spline spindle is provided with lower crank, and lock shaft connecting rod is connected between upper crank and lower crank（14）, the lock shaft connecting rod（14）
Upper end rotates with upper crank through upper pin and is connected, the lock shaft connecting rod（14）Lower end offers chute（141）, the lock shaft connecting rod
（14）Lower end is connected through lower bearing pin with lower crank, and the lower bearing pin is from chute（141）In pass through；
The lock shaft connecting rod（14）Upper end is located on rear side of upper spline main shaft, the lock shaft connecting rod（14）Lower end is located at lower spline spindle
Front side；When the rotation of upper spline spindle axis counterclockwise drives upper power operation mechanism（21）During operation, upper crank handle turns lock shaft connecting rod
（14）Motion upwards, lower bearing pin is as chute（141）Bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710708731.5A CN107275132B (en) | 2017-08-17 | 2017-08-17 | Zhong Ya dual supply operation mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710708731.5A CN107275132B (en) | 2017-08-17 | 2017-08-17 | Zhong Ya dual supply operation mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107275132A true CN107275132A (en) | 2017-10-20 |
| CN107275132B CN107275132B (en) | 2019-06-21 |
Family
ID=60077455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710708731.5A Active CN107275132B (en) | 2017-08-17 | 2017-08-17 | Zhong Ya dual supply operation mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107275132B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202917351U (en) * | 2012-11-19 | 2013-05-01 | 福州天一同益电气有限公司 | Double-switch mutual mechanical interlocking mechanism |
| CN103681031A (en) * | 2012-08-30 | 2014-03-26 | 上海电科电器科技有限公司 | Interlocking device of change-over switch |
| CN203552986U (en) * | 2013-10-23 | 2014-04-16 | 施耐德电器工业公司 | An apparatus mechanically preventing erroneous locking of double automatically-switched power supplies |
| CN205452087U (en) * | 2015-12-29 | 2016-08-10 | 甘肃长城电工电器工程研究院有限公司 | Interlock for circuit breaker |
| CN205645580U (en) * | 2016-05-20 | 2016-10-12 | 河南森源电气股份有限公司 | Transmission main shaft and use operating mechanism of this transmission main shaft |
| CN205723225U (en) * | 2016-04-15 | 2016-11-23 | 施耐德电器工业公司 | A kind of mechanical interlocking for bypass type dual-power transfer switch |
| EP3196908A1 (en) * | 2016-01-21 | 2017-07-26 | LSIS Co., Ltd. | Interlock apparatus of ring main unit |
| CN207134265U (en) * | 2017-08-17 | 2018-03-23 | 江苏洛凯机电股份有限公司 | Zhong Ya dual supply operations mechanism |
-
2017
- 2017-08-17 CN CN201710708731.5A patent/CN107275132B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103681031A (en) * | 2012-08-30 | 2014-03-26 | 上海电科电器科技有限公司 | Interlocking device of change-over switch |
| CN202917351U (en) * | 2012-11-19 | 2013-05-01 | 福州天一同益电气有限公司 | Double-switch mutual mechanical interlocking mechanism |
| CN203552986U (en) * | 2013-10-23 | 2014-04-16 | 施耐德电器工业公司 | An apparatus mechanically preventing erroneous locking of double automatically-switched power supplies |
| CN205452087U (en) * | 2015-12-29 | 2016-08-10 | 甘肃长城电工电器工程研究院有限公司 | Interlock for circuit breaker |
| EP3196908A1 (en) * | 2016-01-21 | 2017-07-26 | LSIS Co., Ltd. | Interlock apparatus of ring main unit |
| CN205723225U (en) * | 2016-04-15 | 2016-11-23 | 施耐德电器工业公司 | A kind of mechanical interlocking for bypass type dual-power transfer switch |
| CN205645580U (en) * | 2016-05-20 | 2016-10-12 | 河南森源电气股份有限公司 | Transmission main shaft and use operating mechanism of this transmission main shaft |
| CN207134265U (en) * | 2017-08-17 | 2018-03-23 | 江苏洛凯机电股份有限公司 | Zhong Ya dual supply operations mechanism |
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| Publication number | Publication date |
|---|---|
| CN107275132B (en) | 2019-06-21 |
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