CN209397541U - A kind of beating door machine core - Google Patents
A kind of beating door machine core Download PDFInfo
- Publication number
- CN209397541U CN209397541U CN201920045790.3U CN201920045790U CN209397541U CN 209397541 U CN209397541 U CN 209397541U CN 201920045790 U CN201920045790 U CN 201920045790U CN 209397541 U CN209397541 U CN 209397541U
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- speed reducer
- machine core
- door machine
- door
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- 238000010009 beating Methods 0.000 title claims abstract description 47
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 76
- 238000009434 installation Methods 0.000 claims abstract description 70
- 230000008878 coupling Effects 0.000 claims abstract description 20
- 238000010168 coupling process Methods 0.000 claims abstract description 20
- 238000005859 coupling reaction Methods 0.000 claims abstract description 20
- 230000000694 effects Effects 0.000 abstract description 6
- 230000007246 mechanism Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000010485 coping Effects 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Abstract
The utility model provides a kind of beating door machine core, including fixed frame, servomotor, gear reducer, shaft coupling, clutch, rotational installation parts and door-plate, the speed reducer are set on the servo motor, and the speed reducer is set on fixed frame；The shaft coupling is set on the speed reducer；The rotational installation parts are set on the fixed frame, and the rotational installation parts are connect with shaft coupling；The clutch is set on the fixed frame, and the movable end of the clutch is connected on the rotational installation parts；The door-plate is installed on the rotational installation parts.The utility model pats door machine core and is provided with speed reducer in driving mechanism, the design of its structure is more scientific, the torque for patting door machine core can be improved, increase the torque for patting door machine core, improve enabling precision, make door-plate in place when it is more stable, thus ensure pat door machine core using effect, improve pat door machine core practicability.
Description
Technical field
The utility model relates to gate technical fields, in particular to a kind of beating door machine core.
Background technique
Gate is a kind of channel barrier device (channel management equipment), for managing the stream of people and specification pedestrian discrepancy, gate
It is mainly used in subway gate system, charge ticket check gate system.Most basic, the most crucial function of gate is to realize once to pass through
One people, gate can be used for various charge, at the access road of gate inhibition's occasion.
Currently, the blocking door of gate mainly has three rod-types to stop door, scissors door and pats door three types.And pat class
The gate of type is because its humanization level is relatively high, so expanded application more and more.
The existing gate for patting door type, the beating most structure of door machine core is relatively simple, so that patting door machine core
Torque is not big enough, and enabling precision is not high enough, and is easy to appear situation unstable in place, affects the use effect for patting door machine core
Fruit reduces the practicability for patting door machine core.
Utility model content
In view of the above problems, the utility model provides a kind of beating door machine core, and the beating door machine core is in driving mechanism
Provided with speed reducer, structure design is more scientific, can improve the torque for patting door machine core, increases the torque for patting door machine core,
Improve enabling precision, make door-plate in place when it is more stable, to ensure the using effect for patting door machine core, improve and pat door machine core
Practicability.
To achieve the goals above, the utility model adopts the following technical solutions:
A kind of beating door machine core, including fixed frame, servomotor, gear reducer, shaft coupling, clutch, rotational installation parts
And door-plate,
The speed reducer is set on the servo motor, and the speed reducer is set on fixed frame；The shaft coupling is set to
On the speed reducer；
The rotational installation parts are set on the fixed frame, and the rotational installation parts are connect with shaft coupling；It is described
Clutch is set on the fixed frame, and the movable end of the clutch is connected on the rotational installation parts；The door-plate peace
Loaded on the rotational installation parts.
As a kind of above-mentioned further optinal plan for patting door machine core, the beating door machine core further includes driver,
The driver is set on the fixed frame, and the driver and the servo motor are electrically connected.
As it is above-mentioned it is a kind of pat door machine core further optinal plan, the rotational installation parts include rotating cylinder and
Door-plate installation folder,
The upper end of the rotating cylinder is set on the fixed frame, the lower end of the rotating cylinder and the shaft coupling
Connection；
The door-plate installation folder is set to the side of the rotating cylinder, and the door-plate is installed in the door-plate installation folder.
As a kind of above-mentioned further optinal plan for patting door machine core, the upper end of the rotating cylinder is equipped with rotation limit
Position boss.
As a kind of above-mentioned further optinal plan for patting door machine core, the door-plate installation folder includes bottom plate, the first folder
Plate and second clamping plate,
The first clamping plate and second clamping plate are set on the bottom plate, are equipped in the first clamping plate and second clamping plate more
A corresponding mounting hole；
The door-plate is installed between the first clamping plate and second clamping plate.
As it is above-mentioned it is a kind of pat door machine core further optinal plan, the fixed frame include backboard, upper mounting plate, from
Clutch mounting plate, speed reducer mounting plate and lower installation board,
The upper mounting plate, clutch mounting plate, speed reducer mounting plate and lower installation board on the backboard from top to bottom
It sets gradually；
The rotational installation parts are set on the upper mounting plate；The clutch is set on the clutch mounting plate；
The speed reducer is set on the speed reducer mounting plate.
As a kind of above-mentioned further optinal plan for patting door machine core, the fixed frame further includes encoder fixed plate,
The encoder fixed plate is set on the upper mounting plate, for encoder to be arranged.
As a kind of above-mentioned further optinal plan for patting door machine core, the speed reducer mounting plate includes speed reducer installation
Mainboard and speed reducer pinboard,
The speed reducer installation mainboard is set on the backboard, and the speed reducer pinboard is set to speed reducer installation master
On plate, the speed reducer is set on the speed reducer pinboard.
As a kind of above-mentioned further optinal plan for patting door machine core, the fixed frame further includes upper trim, side dress
Decorative cover and lower trim,
The upper trim, side trim and lower trim are from top to bottom set gradually on the backboard.
As a kind of above-mentioned further optinal plan for patting door machine core, be provided on the backboard upper mounting plate,
The installing port of clutch mounting plate, speed reducer mounting plate and lower installation board.
The advantages of below to the utility model or principle are illustrated:
A kind of beating door machine core, speed reducer are set on servo motor, and are set on fixed frame；Shaft coupling is set to speed reducer
On；It is rotatablely installed parts to be set on fixed frame, and is connect with shaft coupling；Clutch is set on fixed frame, and movable end is connected to
It is rotatablely installed on parts；Door-plate be installed on rotational installation parts on, specifically, the beating door machine core at work, servo motor
Rotation drives speed reducer rotation, and speed reducer drives rotational installation parts to rotate by shaft coupling, and then drives door-plate rotation, thus
Realize the opening and closing of the gate door-plate using the beating door machine core；The beating door machine core is provided in driving mechanism to slow down
Machine, structure design is more scientific, can improve the torque for patting door machine core, increases the torque for patting door machine core, improves essence of opening the door
Degree, make door-plate quickly in place when it is more stable, thus ensure pat door machine core using effect, improve pat door machine core it is practical
Property, and improve the service life for patting door machine core.
To enable the above objects, features, and advantages of the utility model to be clearer and more comprehensible, preferred embodiment is cited below particularly, and
Cooperate appended attached drawing, is described in detail below.
Detailed description of the invention
It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by
Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also
To obtain other relevant attached drawings according to these attached drawings.
Fig. 1 is the schematic perspective view of the beating door machine core of the utility model embodiment；
Fig. 2 is the schematic cross-sectional view of the beating door machine core of the utility model embodiment；
Fig. 3 is the mounting structure schematic diagram of the backboard of the utility model embodiment, upper mounting plate and rotating cylinder；
Fig. 4 is the backboard of the utility model embodiment and the local mounting structure schematic diagram of upper mounting plate.
Description of symbols:
10- fixed frame；11- backboard；111- installing port；12- upper mounting plate；13- clutch mounting plate；14- speed reducer peace
Fill mainboard；15- speed reducer pinboard；16- lower installation board；17- encoder fixed plate；The upper trim of 18-；The side 19- trim；
Trim under 20-；21- servo motor；22- speed reducer；23- shaft coupling；24- clutch；25- is rotatablely installed parts；251- turns
Dynamic cylinder；252- door-plate installation folder；26- door-plate；27- driver.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.The component of the utility model embodiment being usually described and illustrated herein in the accompanying drawings can be with a variety of different configurations
To arrange and design.Therefore, below the detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit
The range of claimed invention processed, but it is merely representative of the selected embodiment of the utility model.It is practical new based on this
The embodiment of type, those skilled in the art's every other embodiment obtained without making creative work,
It fall within the protection scope of the utility model.
In the present invention, term " on ", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outside",
" in ", "vertical", "horizontal", " transverse direction ", the orientation or positional relationship of the instructions such as " longitudinal direction " be orientation based on the figure or
Positional relationship.These terms are not intended to limit indicated primarily to better describe the utility model and embodiment
Device, element or component must have particular orientation, or be constructed and operated with particular orientation.
Also, above-mentioned part term is other than it can be used to indicate that orientation or positional relationship, it is also possible to for indicating it
His meaning, such as term " on " also are likely used for indicating certain relations of dependence or connection relationship in some cases.For ability
For the those of ordinary skill of domain, the concrete meaning of these terms in the present invention can be understood as the case may be.
In addition, term " installation ", " setting ", " being equipped with ", " connection ", " connected " shall be understood in a broad sense.For example, it may be solid
Fixed connection, is detachably connected or monolithic construction；It can be mechanical connection, or point connection；It can be directly connected, either
It indirectly connected through an intermediary, or is two connection internal between device, element or component.For this field
For those of ordinary skill, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
In addition, term " first ", " second " etc. are mainly used for distinguishing different devices, element or component (specifically
Type and construction may it is identical may also be different), be not intended to show or implies meaning showing device, element or component
Relative importance and quantity.Unless otherwise indicated, the meaning of " multiple " is two or more.
Referring to Fig. 1 and Fig. 2, wherein Fig. 1 is the schematic perspective view of the beating door machine core of the utility model embodiment,
Fig. 2 is the schematic cross-sectional view of the beating door machine core of the utility model embodiment.
A kind of beating door machine core of the utility model embodiment, including fixed frame 10, servo motor 21, speed reducer 22, connection
Axis device 23, clutch 24, rotational installation parts 25 and door-plate 26.
Speed reducer 22 is set on servo motor 21, and speed reducer 22 is set on fixed frame 10；Shaft coupling 23 is set to speed reducer
On 22.
It is rotatablely installed parts 25 to be set on fixed frame 10, and is rotatablely installed parts 25 and is connect with shaft coupling 23；Clutch 24
On fixed frame 10, the movable end of clutch 24 is connected on rotational installation parts 25；Door-plate 26 is installed on rotational installation machine
On part 25.
The beating door machine core of the utility model embodiment, speed reducer 22 are set on servo motor 21, and are set to fixed frame 10
On；Shaft coupling 23 is set on speed reducer 22；It is rotatablely installed parts 25 to be set on fixed frame 10, and is connect with shaft coupling 23；Clutch
Device 24 is set on fixed frame 10, and movable end is connected on rotational installation parts 25；Door-plate 26 is installed on rotational installation parts 25
On, specifically, at work, the rotation of servo motor 21 drives speed reducer 22 to rotate to the beating door machine core, and speed reducer 22 passes through connection
Axis device 23 drives rotational installation parts 25 to rotate, and then door-plate 26 is driven to rotate, to realize the lock using the beating door machine core
The opening and closing of gate plate 26；The beating door machine core is provided with speed reducer 22, structure design more section in driving mechanism
Can improve the torque for patting door machine core, increase the torque for patting door machine core, improve enabling precision, keep door-plate 26 quick in place
When it is more stable, thus ensure pat door machine core using effect, improve pat door machine core practicability, and improve pat door machine core
Service life.
Referring to Fig. 1 and Fig. 2, in the present embodiment, patting door machine core further includes driver 27.
Driver 27 is set on fixed frame 10, and driver 27 and servo motor 21 are electrically connected.
Driver 27 can be used for controlling servo motor 21, and using acquisition 21 current feedback of servo motor, realize that physics is anti-
Function is pressed from both sides, when current value reaches setting value (adjustable), triggering is locked or reversely opens the door, preferably to protect the beating door machine
Core reduces the impaired probability of beating door machine core, and improves the practicability of the beating door machine core.
Referring to fig. 2, as an alternative embodiment, speed reducer 22 is the speed reducer 22 of 1:20 type.
Referring to Fig. 1 and Fig. 2, in the present embodiment, fixed frame 10 includes backboard 11, upper mounting plate 12, clutch mounting plate
13, speed reducer mounting plate and lower installation board 16.
Upper mounting plate 12, clutch mounting plate 13, speed reducer mounting plate and lower installation board 16 on backboard 11 from top to bottom
It sets gradually.
Parts 25 are rotatablely installed to be set on upper mounting plate 12；Clutch 24 is set on clutch mounting plate 13；Speed reducer 22
On speed reducer mounting plate.
The design of 10 structure of fixed frame can be convenient for the installation and removal of the beating door machine core, and ensure the beating door machine core knot
The stability of structure, simultaneously, moreover it is possible to convenient for the maintenance to the beating door machine core.
It should be noted that in another embodiment, fixed frame 10 can also be other structures, here, not to fixed frame
10 other structures are enumerated, should as long as the fixed frame 10 of other structures can be applied in the structure of the beating door machine core
Belong to the desired protection scope of the utility model.
Referring to Fig. 1 and Fig. 2, in the present embodiment, fixed frame 10 further includes encoder fixed plate 17.
Encoder fixed plate 17 is set on upper mounting plate 12, for encoder to be arranged.
Encoder fixed plate 17 can be used to install encoder, and the in-placing precision of the beating door machine core is improved by encoder,
To improve the using effect of the beating door machine core, keep the practicability of the beating door machine core stronger.
Referring to Fig. 1 and Fig. 2, in the present embodiment, speed reducer mounting plate includes that speed reducer installation mainboard 14 and speed reducer turn
Fishplate bar 15.
Speed reducer is installed mainboard 14 and is set on backboard 11, and speed reducer pinboard 15 is set on speed reducer installation mainboard 14, subtracts
Fast machine 22 is set on speed reducer pinboard 15.
The setting of speed reducer mounting plate specific structure can be convenient for installation and removal of the speed reducer 22 on speed reducer mounting plate,
Improve installation, the removal efficiency of speed reducer 22.
Referring to Fig. 1 and Fig. 2, in the present embodiment, fixed frame 10 further includes upper trim 18, side trim 19 and lower decoration
Lid 20.
Upper trim 18, side trim 19 and lower trim 20 are from top to bottom set gradually on backboard 11.
Upper trim 18, side trim 19 and lower trim 20 can decorate the beating door machine core, and to the beating door machine core
It plays a protective role, ensures the stability of the beating door machine cored structure.
Referring to Fig. 1 to Fig. 4, wherein Fig. 3 is the backboard 11, upper mounting plate 12 and rotating cylinder of the utility model embodiment
251 mounting structure schematic diagram, Fig. 4 are that the backboard 11 of the utility model embodiment and the local mounting structure of upper mounting plate 12 show
It is intended to.
In the present embodiment, be provided on backboard 11 upper mounting plate 12, clutch mounting plate 13, speed reducer mounting plate and under
The installing port 111 of mounting plate 16.
The setting of installing port 111 on backboard 11 can be convenient for upper mounting plate 12, clutch mounting plate 13, speed reducer mounting plate
And the installation of lower installation board 16, moreover it is possible to ensure upper mounting plate 12, clutch mounting plate 13, speed reducer mounting plate and lower installation board 16
Installation accuracy.
Referring to Fig. 1 and Fig. 2, in the present embodiment, rotational installation parts 25 include rotating cylinder 251 and door-plate installation folder
252。
The upper end of rotating cylinder 251 is set on fixed frame 10, and the lower end of rotating cylinder 251 is connect with shaft coupling 23.
Door-plate installation folder 252 is set to the side of rotating cylinder 251, and door-plate 26 is installed in door-plate installation folder 252.
The setting for being rotatablely installed 25 structure of parts can be installed on fixed frame 10 convenient for rotating cylinder 251, and be convenient for door-plate
26 installation.
It should be noted that in another embodiment, rotational installation parts 25 can also be other structures, here, not right
The other structures of rotational installation parts 25 are enumerated, as long as the rotational installation parts 25 of other structures can be applied in the beating door machine
In the structure of core, the desired protection scope of the utility model should belong to.
Referring to Fig. 1 to Fig. 3, in the present embodiment, the upper end of rotating cylinder 251 is equipped with rotary spacing boss (in figure not
It shows).
The setting of rotary spacing boss can play position-limiting action to the rotation of rotating cylinder 251, with ensure door-plate 26 according to
Conventional design rotation specifically referring to Fig. 3, is provided with the retaining structure matched with rotary spacing boss on upper mounting plate 12,
The retaining structure of semicircular in shape i.e. as shown in the figure.
Referring to Fig. 1 and Fig. 2, in the present embodiment, door-plate installation folder 252 includes bottom plate, first clamping plate and second clamping plate.
First clamping plate and second clamping plate are set on the bottom plate, and multiple corresponding peaces are equipped in first clamping plate and second clamping plate
Fill hole.
Door-plate 26 is installed between first clamping plate and second clamping plate.
The design of 252 specific structure of door-plate installation folder can be convenient for the installation and removal of door-plate 26, and ensure that door-plate 26 is installed
Stability.
Preferably, the multiple corresponding mounting holes being arranged in first clamping plate and second clamping plate are arranged alternately.
In above-mentioned all embodiments, " big ", " small " be in contrast, " more ", " few " be in contrast, "upper",
"lower" is that in contrast, to the form of presentation of such relative terms, the utility model embodiment is no longer added to repeat.
It should be understood that " in the present embodiment ", " in the utility model embodiment " or " as one that specification is mentioned in the whole text
Kind optional embodiment " mean a particular feature, structure, or characteristic related with embodiment include the utility model extremely
In few one embodiment.Therefore, " in the present embodiment ", " in the utility model embodiment " occurred everywhere in the whole instruction
Or not necessarily refer to identical embodiment " as a kind of optional embodiment ".In addition, these a particular feature, structure, or characteristics
It can combine in any suitable manner in one or more embodiments.Those skilled in the art should also know that specification
Described in embodiment belong to alternative embodiment, related actions and modules not necessarily the utility model institute is necessary
's.
In the various embodiments of the utility model, it should be appreciated that magnitude of the sequence numbers of the above procedures are not meant to hold
Successively, the execution sequence of each process should be determined by its function and internal logic the certainty of row sequence, without coping with the utility model
The implementation process of embodiment constitutes any restriction.
Above description is only a specific implementation of the present invention, but the protection scope of the utility model is not limited to
In this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in variation
Or replacement, it should be covered within the scope of the utility model.Therefore, the protection scope of the utility model should be wanted with right
Subject to the protection scope asked.
Claims (10)
1. a kind of beating door machine core, which is characterized in that including fixed frame, servomotor, gear reducer, shaft coupling, clutch, rotation
Parts and door-plate are installed,
The speed reducer is set on the servo motor, and the speed reducer is set on fixed frame；The shaft coupling is set to described
On speed reducer；
The rotational installation parts are set on the fixed frame, and the rotational installation parts are connect with shaft coupling；The clutch
Device is set on the fixed frame, and the movable end of the clutch is connected on the rotational installation parts；The door-plate is installed on
On the rotational installation parts.
2. a kind of beating door machine core according to claim 1, which is characterized in that the beating door machine core further includes driving
Device,
The driver is set on the fixed frame, and the driver and the servo motor are electrically connected.
3. a kind of beating door machine core according to claim 1, which is characterized in that the rotational installation parts include rotation circle
Cylinder and door-plate installation folder,
The upper end of the rotating cylinder is set on the fixed frame, and the lower end of the rotating cylinder and the shaft coupling connect
It connects；
The door-plate installation folder is set to the side of the rotating cylinder, and the door-plate is installed in the door-plate installation folder.
4. a kind of beating door machine core according to claim 3, which is characterized in that the upper end of the rotating cylinder, which is equipped with, to be turned
Dynamic positive stop lug boss.
5. a kind of beating door machine core according to claim 3, which is characterized in that the door-plate installation folder includes bottom plate,
One clamping plate and second clamping plate,
The first clamping plate and second clamping plate are set on the bottom plate, and multiple phases are equipped in the first clamping plate and second clamping plate
Corresponding mounting hole；
The door-plate is installed between the first clamping plate and second clamping plate.
6. a kind of beating door machine core according to claim 1, which is characterized in that the fixed frame includes backboard, upper installation
Plate, clutch mounting plate, speed reducer mounting plate and lower installation board,
The upper mounting plate, clutch mounting plate, speed reducer mounting plate and lower installation board on the backboard from top to bottom successively
Setting；
The rotational installation parts are set on the upper mounting plate；The clutch is set on the clutch mounting plate；It is described
Speed reducer is set on the speed reducer mounting plate.
7. a kind of beating door machine core according to claim 6, which is characterized in that the fixed frame further includes that encoder is fixed
Plate,
The encoder fixed plate is set on the upper mounting plate, for encoder to be arranged.
8. a kind of beating door machine core according to claim 6, which is characterized in that the speed reducer mounting plate includes speed reducer
Mainboard and speed reducer pinboard are installed,
The speed reducer installation mainboard is set on the backboard, and the speed reducer pinboard is set to the speed reducer and installs mainboard
On, the speed reducer is set on the speed reducer pinboard.
9. a kind of beating door machine core according to claim 6, which is characterized in that the fixed frame further include upper trim,
Side trim and lower trim,
The upper trim, side trim and lower trim are from top to bottom set gradually on the backboard.
10. a kind of beating door machine core according to claim 6, which is characterized in that be provided with the upper peace on the backboard
Loading board, clutch mounting plate, speed reducer mounting plate and lower installation board installing port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920045790.3U CN209397541U (en) | 2019-01-09 | 2019-01-09 | A kind of beating door machine core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920045790.3U CN209397541U (en) | 2019-01-09 | 2019-01-09 | A kind of beating door machine core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209397541U true CN209397541U (en) | 2019-09-17 |
Family
ID=67898258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920045790.3U Active CN209397541U (en) | 2019-01-09 | 2019-01-09 | A kind of beating door machine core |
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| Country | Link |
|---|---|
| CN (1) | CN209397541U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112983244A (en) * | 2019-12-17 | 2021-06-18 | 航天信息股份有限公司 | Pat core shaft coupling stop device and pat core |
-
2019
- 2019-01-09 CN CN201920045790.3U patent/CN209397541U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112983244A (en) * | 2019-12-17 | 2021-06-18 | 航天信息股份有限公司 | Pat core shaft coupling stop device and pat core |
| CN112983244B (en) * | 2019-12-17 | 2022-07-22 | 航天信息股份有限公司 | Pat core shaft coupling stop device and pat core |
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