CN105489365B - For the structure being continuously fitted in electro-magnet magnetic yoke on bottom plate - Google Patents
For the structure being continuously fitted in electro-magnet magnetic yoke on bottom plate Download PDFInfo
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- CN105489365B CN105489365B CN201510756846.2A CN201510756846A CN105489365B CN 105489365 B CN105489365 B CN 105489365B CN 201510756846 A CN201510756846 A CN 201510756846A CN 105489365 B CN105489365 B CN 105489365B
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- magnet
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Abstract
The invention discloses a kind of be used for continuous structure electro-magnet magnetic yoke being fitted on bottom plate, including hydraulic machine (1), hydraulic machine (1) is provided with base (2) and drift (3), and it also includes rotating disk (4) and positioning seat (7)；Rotating disk (4) is along the circumferential direction provided with multiple mounting holes (8), and positioning seat (7) is vertically slidably connected in mounting hole (8)；Described rotating disk (4) lower surface is more than zero to the distance of base (2) upper surface；Described hydraulic machine (1) is provided with the power set for being used for driving rotating disk (4) rotation so that multiple positioning seats (7) to be delivered to immediately below drift (3) one by one.A kind of operative's safety is provided, and press-fits the structure for being used to continuously be fitted in electro-magnet magnetic yoke on bottom plate of efficiency high.
Description
Technical field
It is used to electro-magnet magnetic yoke continuously is fitted in into bottom the present invention relates to electromagnet frock technical field, more particularly to one kind
Structure on plate.
Background technology
Electromagnet includes yoke and bottom plate, and yoke is fitted on bottom plate during assembling.Traditional press-fitting tool is simple in construction,
Only one of which base and a hydraulic machine, operationally, yoke are inverted and is fixed on base, bottom plate manually is placed on into magnetic
On yoke, then, the mode Pneumatic hydraulic lathe stepped on pin, the head of hydraulic machine, which is fallen, completes press-fiting for yoke and bottom plate
Journey.For the ease of the cooperation of yoke and bottom plate, current yoke is designed as annular shape, and base is provided with can house annular shape
The annular groove of yoke, bottom plate is placed on base, then yoke end is placed in the annular groove of bottom plate, last hydraulic pressure
Lathe enters in yoke pressure side portion into the annular groove of bottom plate.The press-fitting tool of prior art, it is simple in construction, exist it is following not
Foot：During due to press-fiting, bottom plate is manually placed in yoke the subsequent hydraulic machine that just starts and press-fited, if press-fited with placing
The action of bottom plate is not coordinated, and the head of hydraulic machine is easy to be pressed onto the finger of workman and triggers industrial injury, and this side
Formula once places a yoke, press-fits and finished product is removed after completing in the next yoke of placement, press-fit efficiency low.
The content of the invention
The technical problem to be solved in the present invention is to overcome existing technological deficiency there is provided a kind of operative safety, and is pressed
The structure for being used to continuously be fitted in electro-magnet magnetic yoke on bottom plate of dress efficiency high.
The present invention technical solution be to provide it is a kind of with following structure be used for continuously electro-magnet magnetic yoke is press-fited
Structure on bottom plate：Including hydraulic machine, hydraulic machine is provided with base and drift, and drift is arranged vertically at hydraulic pressure
On lathe, it also includes rotating disk and multiple positioning seats for being used to position the yoke and bottom plate of electromagnet；Rotating disk level is set
Put on hydraulic machine；Rotating disk is vertically located between drift bottom and base upper surface, and rotating disk is along the circumferential direction set
Have it is multiple be used to house the mounting holes of multiple positioning seats, mounting hole runs through the upper and lower surface of rotating disk, install axially bored line with
Rotating disk diameter parallel, positioning seat is vertically slidably connected in mounting hole；Described disk lower surface is to base upper surface
Distance be more than zero；Described hydraulic machine, which is provided with, to be used to driving rotating disk rotation multiple positioning seats are being delivered into drift one by one just
The power set of lower section；Described rotating disk upper installing hole upper port, which is provided with, is used for the guide pin bushing that positioning seat is oriented to, and guide pin bushing upper end is inside
It is extended with the annular paw for pushing against or disengaging positioning seat upper surface；Described hydraulic machine, which is provided with, is used for rotating disk stopping turn
Spacing push rod after dynamic, push rod is slidably connected on hydraulic machine in the horizontal direction, and push rod upper surface is provided with linear gear rack, hydraulic pressure
Lathe is provided with clockwise and anticlockwise motor, and clockwise and anticlockwise motor output end engages to drive linear gear rack along water by gear with linear gear rack
Square to moving back and forth, rotating disk periphery wall is provided with multiple spacing holes, and the axis of multiple spacing holes is vertical with rotating disk axis, many
The axis of individual spacing hole is located in same level, and multiple spacing holes are corresponded with multiple positioning seats and set, multiple spacing
The axis in hole intersects with the axis on multiple positioning seats respectively, on push rod towards rotating disk axis one end insert spacing hole or with it is spacing
Hole departs from；Positioning seat lower end is fixedly connected with the first magnet, and base upper end is fixedly connected with the second magnet, and the second magnet is annular
Structure, the second magnet of the loop configuration include being used for the non-active area mutually exclusive with the first magnet and for the first magnetic
The working region that iron attracts each other；Working region on the second described magnet is located at the underface of drift, and the loop configuration
The second magnet be located at positioning seat rotate disk axis rotate when movement locus underface.
The present invention drives rotating disk to rotate by power set, so that by the bottom plate on the positioning seat and positioning seat on rotating disk
Seriatim it is sent to below drift, yoke is pressed into bottom plate with yoke with facilitating drift to push；In this process, Gong Renke
To be placed and taken out bottom plate on the positioning seat away from drift, thus the hand of workman can be thoroughly avoided to be pressed onto by drift
And cause industrial injury；Further, since positioning seat, bottom plate and yoke continuously can be sent to immediately below drift by rotating disk, so
The operating efficiency press-fited can just be substantially increased；Further, since rotating disk has relative rotation relative to base, if under rotating disk
Surface contacts and relatively rotated with base upper surface, then the frictional force between disk lower surface and base upper surface can not only hinder
Hinder the rotation of rotating disk, and harsh noise can be sent；If there is gap between disk lower surface and base upper surface, then punching
When positioning seat of the head on to rotating disk carries out punching press, because positioning seat is to deviate rotating disk axis, then drift will be to rotating disk
An eccentric active force is produced, the active force can cause rotating disk to tremble, so that power set are also had with very big rush
Hit；But can vertically be slided relative to rotating disk by positioning seat in the present invention, then positioning seat is away from drift position
When putting, because the non-active area on the first magnet and the second magnet below positioning seat is repelled, positioning seat energy upward sliding, i.e.,
Positioning seat lower surface is disengaged with base upper surface, and close to forcer position under the drive of rotating disk；When positioning seat turns to punching
When immediately below head, positioning seat is caused due to the sucking action in the second magnet works region on the first magnet on positioning seat and pedestal
Slide downward, until positioning seat lower surface is pushed against base upper surface, that is to say, that in the downward punching press of drift, under positioning seat
The benchmark on surface is the upper surface of pedestal, so, and drift would not produce eccentric in punching press yoke and bottom plate to rotating disk
Power, and rotating disk easily can also deliver to positioning seat one by one drift underface；Further, since the setting of annular paw can be with
Depart from when preventing positioning seat upward sliding from guide pin bushing, improve the stability being driven in the present invention and all parts motion can
By property；Moreover, when a positioning seat on rotating disk is turned to below drift, clockwise and anticlockwise motor works to insert push rod end
To prevent drift rotating disk when press-fiting yoke and bottom plate from can rotate in the spacing hole of rotating disk periphery wall, that is to say, that logical
The stability for press-fiting process turntable can be improved by crossing the setting of push rod；Moreover, even if rotating disk is rotated by impulsive force,
The active force that peripheral force so on rotating disk is delivered on push rod also can be only delivered in sliding on hydraulic machine, without having
The radial load effect of rotating disk is applied on push rod along the length direction of push rod, and then prevents push rod by length direction active force
Clockwise and anticlockwise motor is impacted, the service life of clockwise and anticlockwise motor is influenceed.Therefore, the present invention provides a kind of operative's peace
Entirely, and press-fit efficiency high be used for the continuous structure being fitted in electro-magnet magnetic yoke on bottom plate.
As a preferred embodiment, the internal diameter of described annular paw is less than the external diameter of positioning seat, and the internal diameter of annular paw is big
In the external diameter of bottom plate.It is preferred by this, it is ensured that while preventing that positioning seat from departing from out of mounting hole, additionally it is possible to facilitate bottom plate
Placement, and bottom plate takes out from positioning seat.
As a preferred embodiment, described power set refer to be fixedly connected with motor on hydraulic machine, motor passes through rotating shaft
It is connected with rotating disk bottom.By this preferably, rotating disk can effectively be driven around own axis, so that by determining on rotating disk
Position seat is delivered to immediately below drift one by one.
As a preferred embodiment, described positioning seat upper end is provided with the groove for being used for housing bottom plate, and the depth of the groove is small
In the thickness of bottom plate.It can preferably facilitate the positioning of bottom plate, i.e. bottom plate can be on the basis of groove by this；Further, since recessed
Groove depth is less than base plate thickness, then operating personnel can grasp bottom plate by instrument or finger, facilitate yoke and bottom
Plate press-fit after the completion of pickup.
As a preferred embodiment, the first described magnet refer to N poles upward, S bar magnets extremely directed downwardly, on the second magnet
Working region refers to N poles upward, S the first arc-shaped magnets extremely directed downwardly, the non-active area on the second magnet refer to N poles down, S
The second arc-shaped magnet of pole upward；First arc-shaped magnet is equal with the diameter of the second arc-shaped magnet, and the first arc-shaped magnet and
The center of circle of two arc-shaped magnets passes through the axis of rotating disk.It preferably can effectively ensure that positioning seat turns to the second magnet by this
It can be moved down when above upper working region along axially bored line is installed so that positioning seat lower surface is pushed against pedestal upper surface
On；Positioning seat can be moved up when turning on the second magnet above non-active area along axially bored line is installed so that positioning
Seat lower surface departs from pedestal upper surface.
As a preferred embodiment, described multiple positioning seats are at least three.By this preferably, operating personnel can be at one
Realize that putting part, punching press, pickup three process, i.e. rotating disk turns to a positioning seat when carrying out punching press below drift on rotating disk,
Operating personnel can also be placed the yoke not press-fited and bottom plate respectively to other two positioning seat simultaneously, and taking-up has press-fited
Complete yoke and bottom plate.
Brief description of the drawings
Fig. 1 is partial sectional view of the invention.
Fig. 2 is the structural representation of the second magnet in the present invention.
Fig. 3 is the top view of turntable of the present invention.
Fig. 4 is the structural representation of turntable of the present invention.
Shown in figure：1st, hydraulic machine, 2, base, 3, drift, 4, rotating disk, 5, yoke, 6, bottom plate, 7, positioning seat, 8, peace
Fill hole, 9, motor, 10, rotating shaft, the 11, first magnet, the 12, second magnet, 13, guide pin bushing, 14, annular paw, 15, push rod, 16, straight
Line rack, 17, gear, 18, spacing hole, the 23, first arc-shaped magnet, the 24, second arc-shaped magnet.
Embodiment
The invention will be further described with reference to the accompanying drawings and detailed description.
As illustrated, the present invention, which is used for the continuous structure being fitted in electro-magnet magnetic yoke on bottom plate, includes hydraulic machine 1, liquid
Press bed 1 is provided with base 2 and drift 3, and drift 3 is arranged vertically on hydraulic machine 1, i.e., drift 3 can be along vertical
Direction rises or falls, and it also includes rotating disk 4 and multiple positioning seats for being used to position the yoke 5 and bottom plate 6 of electromagnet
7；Rotating disk 4 is horizontally set on hydraulic machine 1；Rotating disk 4 is vertically located between the bottom of drift 3 and the upper surface of base 2,
Rotating disk 4 is along the circumferential direction provided with multiple mounting holes 8 for being used to house multiple positioning seats 7, and mounting hole 8 runs through the upper surface of rotating disk 4
And lower surface, the axis of mounting hole 8 and the diameter parallel of rotating disk 4, positioning seat 7 is vertically slidably connected in mounting hole 8；It is described
The lower surface of rotating disk 4 be more than zero, i.e. rotating disk 4 and base 2 to the distance of the upper surface of base 2 and there is gap in vertical direction；It is described
Hydraulic machine 1 be provided with and be used for the power that driving rotating disk 4 rotates to deliver to multiple positioning seats 7 immediately below drift 3 one by one and fill
Put；The described upper port of 4 upper installing hole of rotating disk 8, which is provided with, is used for the guide pin bushing 13 that positioning seat 7 is oriented to, and the upper end of guide pin bushing 13 extends internally and had
Annular paw 14 for pushing against or disengaging the upper surface of positioning seat 7；Described hydraulic machine 1, which is provided with, is used for the stopping turn of rotating disk 4
Spacing push rod 15 after dynamic, push rod 15 is slidably connected on hydraulic machine 1 in the horizontal direction, and the upper surface of push rod 15 is provided with straight line tooth
Bar 16, hydraulic machine 1 is provided with clockwise and anticlockwise motor, and clockwise and anticlockwise motor output end engages to drive by gear 17 with linear gear rack 16
Dynamic linear gear rack 16 is moved back and forth in the horizontal direction, and the periphery wall of rotating disk 4 is provided with multiple spacing holes 18, the axle of multiple spacing holes 18
Line is vertical with the axis of rotating disk 4, and the axis of multiple spacing holes 18 is located in same level, and multiple spacing holes 18 with it is multiple fixed
Position seat 7, which is corresponded, to be set, and the axis of multiple spacing holes 18 intersects with the axis on multiple positioning seats 7 respectively, court on push rod 15
Spacing hole 18 is inserted to the axis one end of rotating disk 4 or is departed from spacing hole 18；The lower end of positioning seat 7 is fixedly connected with the first magnet 11,
The upper end of base 2 is fixedly connected with the second magnet 12, and the second magnet 12 is loop configuration, and the second magnet 12 of the loop configuration includes
Working region for the non-active area mutually exclusive with the first magnet 11 and for being attracted each other with the first magnet 11；It is described
The second magnet 12 on working region be located at drift 3 underface, and the loop configuration the second magnet 12 be located at positioning seat 7
The underface of movement locus when being rotated around the axis of rotating disk 4.That is, track of the positioning seat 7 when being rotated around the axis of rotating disk 4 is
One circle, and the circular trace is, positioned at the top of the second magnet 12 of loop configuration, so to ensure that on positioning seat 7
The first magnet 11 all the time with base 2 the second magnet 12 exist an attraction or repulsive force.
The internal diameter of described annular paw 14 is less than the external diameter of positioning seat 7, and the internal diameter of annular paw 14 is more than bottom plate 6
External diameter.Described annular paw 14 just refers to that the upper port of guide pin bushing 13, which extends internally, the projection of a circular ring structure in fact, should
Projection is in the structure of hollow out, as shown in Figure 1.
Described power set refer to be fixedly connected with motor 9 on hydraulic machine 1, motor 9 pass through rotating shaft 10 with rotating disk 4
End is connected.
The described upper end of positioning seat 7 is provided with the groove for being used for housing bottom plate 6, and thickness of the depth less than bottom plate 6 of the groove
Degree.Depending on shape of the described channel section shape with bottom plate 6.
The first described magnet 11 refer to N poles upward, S bar magnets extremely directed downwardly, the working region on the second magnet 12
Refer to N poles upward, S the first arc-shaped magnets 23 extremely directed downwardly, the non-active area on the second magnet 12 refer to N poles down, S poles court
On the second arc-shaped magnet 24；First arc-shaped magnet 23 is equal with the diameter of the second arc-shaped magnet 24, and the first arc-shaped magnet 23
Pass through the axis of rotating disk 4 with the center of circle of the second arc-shaped magnet 24.
Described multiple positioning seats 7 are at least three, and described multiple positioning seats 7 are uniformly distributed around the axis of rotating disk 4, and
The quantity of positioning seat 7 can be with more, such as 4,5,6.
Presently preferred embodiments of the present invention is the foregoing is only, protection scope of the present invention is not intended to limit.It is all in this hair
Within bright claim, any modification, equivalent substitution and improvement for being made etc., should be included in protection scope of the present invention it
It is interior.
Claims (6)
1. a kind of be used for the continuous structure being fitted in electro-magnet magnetic yoke on bottom plate, it includes hydraulic machine (1), hydraulic machine
(1) base (2) and drift (3) are provided with, drift (3) is arranged vertically on hydraulic machine (1), it is characterised in that：It
Also include rotating disk (4) and multiple positioning seats (7) for being used to position the yoke (5) and bottom plate (6) of electromagnet；Rotating disk (4)
It is horizontally set on hydraulic machine (1)；Rotating disk (4) be vertically located at drift (3) bottom and base (2) upper surface it
Between, rotating disk (4) is along the circumferential direction used to housing the mounting holes (8) of multiple positioning seats (7) provided with multiple, multiple mounting holes (8) with
Multiple positioning seats (7), which correspond, to be set, and mounting hole (8) runs through the upper and lower surface of rotating disk (4), mounting hole (8) axis
With rotating disk (4) diameter parallel, positioning seat (7) is vertically slidably connected in mounting hole (8)；Described rotating disk (4) following table
The distance of face to base (2) upper surface is more than zero；Described hydraulic machine (1), which is provided with, to be used to driving rotating disk (4) rotation incite somebody to action
The power set that multiple positioning seats (7) are delivered to immediately below drift (3) one by one；Described rotating disk (4) upper installing hole (8) upper port is set
There is the guide pin bushing (13) being oriented to for positioning seat (7), guide pin bushing (13) upper end extends internally for pushing against or disengaging positioning seat (7)
The annular paw (14) on surface；Described hydraulic machine (1), which is provided with, is used for push rod spacing after rotating disk (4) stops operating
(15), push rod (15) is slidably connected on hydraulic machine (1) in the horizontal direction, and push rod (15) upper surface is provided with linear gear rack
(16), hydraulic machine (1) is provided with clockwise and anticlockwise motor, and clockwise and anticlockwise motor output end is nibbled by gear (17) with linear gear rack (16)
Close to drive linear gear rack (16) to move back and forth in the horizontal direction, rotating disk (4) periphery wall is provided with multiple spacing holes (18), multiple
The axis of spacing hole (18) is vertical with rotating disk (4) axis, and the axis of multiple spacing holes (18) is located in same level, and many
Individual spacing hole (18) and multiple positioning seats (7), which are corresponded, to be set, the axis of multiple spacing holes (18) respectively with multiple positioning seats
(7) axis on intersects, de- towards rotating disk (4) axis one end insertion spacing hole (18) or with spacing hole (18) on push rod (15)
From；Positioning seat (7) lower end is fixedly connected with the first magnet (11), and base (2) upper end is fixedly connected with the second magnet (12), second
Magnet (12) is loop configuration, and the second magnet (12) of the loop configuration includes being used for and mutually exclusive non-of the first magnet (11)
Working region and the working region for being attracted each other with the first magnet (11)；Working region on described the second magnet (12)
Underface positioned at drift (3), and the second magnet (12) of the loop configuration is located at positioning seat (7) around the rotation of rotating disk (4) axis
When movement locus underface, positioning seat (7) away from drift (3) position when, due to the first magnet below positioning seat (7)
(11) repel with the non-active area on the second magnet (12), positioning seat (7) upward sliding, positioning seat (7) lower surface and base
(2) upper surface is disengaged, and is located proximate under the drive of rotating disk (4) to drift (3)；When positioning seat (7) is turning to drift (3) just
During lower section, due to the sucking action of the second magnet (12) working region on the first magnet (11) on positioning seat (7) and base (2)
So that positioning seat (7) slide downward, until positioning seat (7) lower surface is pushed against base (2) upper surface.
2. according to claim 1 be used for the continuous structure being fitted in electro-magnet magnetic yoke on bottom plate, it is characterised in that：Institute
The internal diameter for the annular paw (14) stated is less than the external diameter of positioning seat (7), and the internal diameter of annular paw (14) is more than the outer of bottom plate (6)
Footpath.
3. according to claim 1 be used for the continuous structure being fitted in electro-magnet magnetic yoke on bottom plate, it is characterised in that：Institute
The power set stated refer to be fixedly connected with motor (9) on hydraulic machine (1), motor (9) pass through rotating shaft (10) with rotating disk (4)
End is connected.
4. according to claim 1 be used for the continuous structure being fitted in electro-magnet magnetic yoke on bottom plate, it is characterised in that：Institute
Positioning seat (7) upper end stated is provided with the groove for being used for housing bottom plate (6), and thickness of the depth less than bottom plate (6) of the groove.
5. according to claim 1 be used for the continuous structure being fitted in electro-magnet magnetic yoke on bottom plate, it is characterised in that：Institute
The first magnet (11) stated refer to N poles upward, S bar magnets extremely directed downwardly, the working region on the second magnet (12) refers to N poles
Upward, the non-active area on S the first arc-shaped magnets (23) extremely directed downwardly, the second magnet (12) refer to N poles down, S poles upward
The second arc-shaped magnet (24)；First arc-shaped magnet (23) is equal with the diameter of the second arc-shaped magnet (24), and the first arc magnetic
The center of circle of iron (23) and the second arc-shaped magnet (24) passes through the axis of rotating disk (4).
6. according to claim 1 be used for the continuous structure being fitted in electro-magnet magnetic yoke on bottom plate, it is characterised in that：Institute
The multiple positioning seats (7) stated are at least three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510756846.2A CN105489365B (en) | 2015-11-10 | 2015-11-10 | For the structure being continuously fitted in electro-magnet magnetic yoke on bottom plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510756846.2A CN105489365B (en) | 2015-11-10 | 2015-11-10 | For the structure being continuously fitted in electro-magnet magnetic yoke on bottom plate |
Publications (2)
| Publication Number | Publication Date |
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| CN105489365A CN105489365A (en) | 2016-04-13 |
| CN105489365B true CN105489365B (en) | 2017-09-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510756846.2A Active CN105489365B (en) | 2015-11-10 | 2015-11-10 | For the structure being continuously fitted in electro-magnet magnetic yoke on bottom plate |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106112491A (en) * | 2016-08-29 | 2016-11-16 | 宁波市鄞州通力液压电器厂 | Ripping device on electric magnet |
| CN106300822A (en) * | 2016-08-29 | 2017-01-04 | 宁波市鄞州通力液压电器厂 | For the mechanism that coil on electric magnet is taken out stitches |
| CN106300821A (en) * | 2016-08-29 | 2017-01-04 | 宁波市鄞州通力液压电器厂 | Coil ripping device on electric magnet |
| CN106112490A (en) * | 2016-08-29 | 2016-11-16 | 宁波市鄞州通力液压电器厂 | Automatic clearing device on electric magnet |
| CN107671524B (en) * | 2017-09-22 | 2019-04-30 | 浙江坤邦机械有限公司 | The continuous assembly doffer of intelligence |
| CN107914169B (en) * | 2017-12-20 | 2024-04-26 | 无锡特恒科技有限公司 | Jig pre-pressing device |
| CN108262608A (en) * | 2018-04-03 | 2018-07-10 | 东莞市沃德精密机械有限公司 | Magnet assembling device |
| CN108716806A (en) * | 2018-05-30 | 2018-10-30 | 滁州市锴模装备模具制造有限公司 | A kind of refrigerator bottom board forming die |
| CN108817204A (en) * | 2018-05-30 | 2018-11-16 | 滁州市锴模装备模具制造有限公司 | A kind of refrigerator punching die |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0727059B2 (en) * | 1987-12-16 | 1995-03-29 | 動力炉・核燃料開発事業団 | A device that applies a turning force to the shield plug |
| CN202418527U (en) * | 2012-01-17 | 2012-09-05 | 周齐佑 | Turntable drive limit structure |
| CN203003492U (en) * | 2012-12-06 | 2013-06-19 | 真彩文具股份有限公司 | Rotary disc mechanism |
| CN203972679U (en) * | 2014-08-14 | 2014-12-03 | 海盐汇联通用配件有限公司 | A kind of nut stamping machine with material collecting device |
| CN104440039B (en) * | 2014-11-28 | 2017-02-22 | 宁波市鄞州通力液压电器厂 | Press fitting tool for fitting electromagnetic ferromagnetic yoke on bottom plate in pressing mode |
| CN204640115U (en) * | 2015-03-25 | 2015-09-16 | 延安大学 | Insert-pull pin shaft device |
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2015
- 2015-11-10 CN CN201510756846.2A patent/CN105489365B/en active Active
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