CN104269288A - Installation device and method for proximity switch - Google Patents
Installation device and method for proximity switch Download PDFInfo
- Publication number
- CN104269288A CN104269288A CN201410458075.4A CN201410458075A CN104269288A CN 104269288 A CN104269288 A CN 104269288A CN 201410458075 A CN201410458075 A CN 201410458075A CN 104269288 A CN104269288 A CN 104269288A
- Authority
- CN
- China
- Prior art keywords
- proximity switch
- bracing frame
- mounting bracket
- block
- groove
- 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.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
- H01H3/16—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. for a door switch, a limit switch, a floor-levelling switch of a lift
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/60—Mechanical arrangements for preventing or damping vibration or shock
Abstract
The invention discloses an installation device and method for a proximity switch. The installation device comprises an installation support, a check block, a first pulley block, a second pulley block and a steel wire rope. According to the installation device for the proximity switch, impact force generated in the moving process of the check block is buffered through pulleys and the steel wire rope, and the check block is prevented from cracking up the proximity switch. The installation position of the proximity switch can be adjusted on the installation support under the condition that equipment is operated, a damaged proximity switch can be replaced at any time, and the installation device has the advantages of being simple and light in structure, flexible in operation, high in reliability, easy to assemble and the like.
Description
Technical field
The present invention relates to technical field of automation, particularly relate to a kind of erecting device of proximity switch and the installation method of proximity switch.
Background technology
Proximity switch a kind ofly can send the position switch of operational order without the need to carrying out Mechanical Contact with sports equipment, when equipment moving is to the distance of reaction (also claiming detecting distance) of proximity switch, switch can be made to send actuating signal, thus drive interchange or DC electric apparatus or provide control command to computer installation.Proximity switch can be divided into inductance type, condenser type, Hall-type, photoelectric type etc. by its principle of induction, accordingly can the material of inspected object also different.Such as inductance approach switch can only detect metal material, and Hall-type proximity switch can only detect the object of magnetic material.For same proximity switch, its detection range is not from several millimeters to tens millimeters etc.Proximity switch belongs to switch-type sensor, and the characteristic of its existing travel switch, sensitive switch, has sensing capabilities simultaneously, and reliable in action, stable performance, frequency response is fast, application life is long, and antijamming capability waits by force and has waterproof, the feature such as shockproof, corrosion-resistant.
When using proximity switch to detect sports equipment in actual applications, generally proximity switch is fixed in proximity switch erecting device, and catch is fixed on equipment under test.Because catch has more flat sensitive surface, and it is identical with the detectable material of proximity switch to make material, so can be replaced the induction of proximity switch and equipment under test by the induction of proximity switch and catch.When equipment under test moves, until when the distance between catch and the sensitive surface of proximity switch reaches the detecting distance of proximity switch, thus triggering proximity switch sends actuating signal, completes the control to equipment under test.
The erecting device of existing proximity switch comprises: mounting bracket, catch.Catch is arranged on the surface of detected equipment, and mounting bracket is fixed on assigned address, and proximity switch is installed on support by instruments such as nuts.Within equipment under test drives catch to move to the detecting distance of this proximity switch, during as 10 millimeters, proximity switch senses catch, and send actuating signal, this actuating signal is sent to control system, and control system sends instruction to equipment under test, such as, make equipment under test stop moving.
But inventor is by studying rear discovery to existing erecting device, adopting this erecting device to there are some problems, because equipment under test can produce larger vibrations when moving, causing catch often to encounter proximity switch, proximity switch is broken, causes proximity switch malfunctioning.The installation site of some proximity switch on support is more fixing, if need the position adjusting proximity switch just must change the support of other model, uses inconvenience, very flexible.
Summary of the invention
Provide a kind of erecting device of proximity switch and the proximity switch installation method of correspondence in the embodiment of the present invention, be easily damaged to solve proximity switch of the prior art, position is inconvenient to adjust, the problem of very flexible.
In order to solve the problems of the technologies described above, the embodiment of the invention discloses following technical scheme:
Provide a kind of erecting device of proximity switch, comprising: mounting bracket 1, block 2, first assembly pulley 3, second assembly pulley 4, steel wire rope 5;
Described mounting bracket 1 comprises the first crossing side 101 and the second side 102, described first side 101 comprises the first holddown groove 103 of strip, described second side 102 comprises the second holddown groove 104 of strip and the proximity switch mounting groove 105 of strip, and described first holddown groove 103, second holddown groove 104 and described proximity switch mounting groove 105 are parallel to each other;
Described block 2 comprises: induction groove 201, first fixed block 202, second fixed block 203, described first fixed block 202 embeds in the first holddown groove 103 of described mounting bracket 1, described second fixed block 203 embeds in the second holddown groove 104 of described mounting bracket 1, and the plane at described induction groove 201 place and the distance of described second side (102) meet first threshold scope;
Described first assembly pulley 3 is fixed on described mounting bracket 1, and be connected with the second assembly pulley 4 by steel wire rope 5, described steel wire rope 5 is connected with equipment under test near one end of the second assembly pulley 4, the other end is connected with described block 2, and described block 2 is suspended in described mounting bracket 1, described block 2 is slided up and down along described first holddown groove 103 and described second holddown groove 104 under the traction of steel wire rope 5.
In conjunction with described erecting device, in the first implementation of described erecting device, be connected with the first bracing frame 106 and the second bracing frame 107 between the upper bottom of the first side 101 of described mounting bracket 1, between described first bracing frame 106 and the second bracing frame 107, form the first holddown groove 103 of strip;
Four bracing frames are connected with between the upper bottom of the second side 102 of described mounting bracket 1, be followed successively by the 3rd bracing frame 108, the 4th bracing frame 109, the 5th bracing frame 110, the 6th bracing frame 111, form the second holddown groove 104 of strip between described 3rd bracing frame 108 and the 4th bracing frame 109, between described 5th bracing frame 110 and the 6th bracing frame 111, form the proximity switch mounting groove 105 of strip;
Described 5th bracing frame 110 and the 6th bracing frame 111 embed in described induction groove 201, and described 5th bracing frame 110 and the 6th bracing frame 111 meet Second Threshold scope with the distance of described induction groove 201.
In conjunction with described erecting device, or the first possible implementation of described erecting device, in the implementation that the second of described erecting device is possible, described mounting bracket 1 is the triangular prism structure of hollow, described first side 102, side 101, second is respectively two sides of triangular prism, and six bracing frames of described mounting bracket are parallel with the incline of mounting bracket 1 respectively.
In conjunction with the implementation that the second of described erecting device is possible, in the third possible implementation of described erecting device, described block 2 is triangulo column shape, described first fixed block 202 is positioned at the first side of described block 2, and described second fixed block 203 and described induction slot are in the second side of described block 2; Described steel wire rope 5 is connected with the upper bottom surface of described block 2.
In conjunction with the third possible implementation of described erecting device, in the 4th kind of possible implementation of described erecting device, described first assembly pulley 3 is fixed on the upper bottom surface of described mounting bracket 1, and is connected with the upper bottom surface of described block 2 through the hole of described mounting bracket 1 upper bottom surface; Described second assembly pulley 4 is fixed in any plane.
In conjunction with the third or the 4th kind of possible implementation of described erecting device, in the 5th kind of possible implementation of described erecting device, a rib of the bottom surface of described mounting bracket 1 omits, and described rib is the rib connecting described first side 101 and described second side 102.
On the other hand, a kind of installation method of proximity switch is provided, described installation method uses above-mentioned first aspect or the erecting device described in its implementation to install proximity switch, described installation method comprises: embedded by proximity switch in the proximity switch mounting groove 105 of described erecting device, and the sensitive surface of described proximity switch is towards the plane at described mounting groove 105 place; Nut is used to be fixed in described proximity switch mounting groove 105 by described proximity switch.
From above technical scheme, the erecting device of proximity switch provided by the invention, by the impact using pulley and steel wire rope buffering block to produce at the volley, avoids block to be broken by proximity switch.The installation site of proximity switch can also be adjusted when equipment runs in the scope of proximity switch mounting groove, also can change the proximity switch of damage at any time, have structure simple light and handy, go slick, reliability is high, be easy to the advantages such as assembling.Corresponding proximity switch installation method is simple, easy to use.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, for those of ordinary skills, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the erecting device of proximity switch of the present invention;
Fig. 2 is the structural representation of the block in the erecting device of proximity switch of the present invention;
Fig. 3 is the position view that proximity switch is installed in the erecting device of proximity switch of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, carry out clear, complete description to the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 1, be the structural representation of the erecting device of proximity switch of the present invention.
As shown in Figure 1, the erecting device of proximity switch of the present invention comprises: mounting bracket 1, block 2, first assembly pulley 3, second assembly pulley 4 and steel wire rope 5;
Described mounting bracket 1 comprises: first side 101 and second side 102 of intersecting, first side 101 has the first holddown groove 103 of strip, second side 102 has the second holddown groove 104 of strip and the proximity switch mounting groove 105 of strip, and described first holddown groove 103, second holddown groove 104 and described proximity switch mounting groove 105 are parallel to each other.
The stop block structure schematic diagram of composition graphs 2, described block 2 comprises: the induction groove 201 of depression, the first fixed block 202 protruded, the second fixed block 203 protruded.Described first fixed block 202 embeds in the first holddown groove 103 of described mounting bracket 1, described second fixed block 203 embeds in the second holddown groove 104 of described mounting bracket 1, makes block not only be unlikely to disengaging support but also can move up and down along described first holddown groove 103 and the second holddown groove 104.
Distance between the plane at described induction groove 201 place and described second side 102 meets first threshold scope, and in actual applications, this first threshold scope generally will within the scope of the distance of reaction of proximity switch.
Described first assembly pulley 3 is fixed on described mounting bracket 1, and be connected with the second assembly pulley 4 by steel wire rope 5, described steel wire rope is connected with equipment under test near one end of the second assembly pulley 4, the other end is connected with block 2 by the hole of mounting bracket 1 upper bottom surface, and in rely on the gravity of block 2 to be suspended on by block 2 space that described mounting bracket 1 surrounds, and described block 2 can slide up and down along the first holddown groove 103 and the second holddown groove 104 under the traction of steel wire rope.
First assembly pulley 3 can be fixed on the upper bottom surface of described mounting bracket 1, the second assembly pulley 4 is fixed in any plane.
In actual applications, in order to save material, the structure of hollow out can be made in first side 101 of described mounting bracket 1 and the second side 102, between the upper bottom of the first side 101 of described mounting bracket 1, connect the first bracing frame 106 and the second bracing frame 107, between described first bracing frame 106 and the second bracing frame 107, form the first holddown groove 103 of strip; In like manner, four bracing frames are connected between the upper bottom of the second side 102 of described mounting bracket 1, be followed successively by the 3rd bracing frame 108, the 4th bracing frame 109, the 5th bracing frame 110, the 6th bracing frame 111, form the second holddown groove 104 of strip between described 3rd bracing frame 108 and the 4th bracing frame 109, between described 5th bracing frame 110 and the 6th bracing frame 111, form the proximity switch mounting groove 105 of strip.Described 5th bracing frame 110 and the 6th bracing frame 111 embed in described induction groove 201.
Described 5th bracing frame 110 and the 6th bracing frame 111 meet Second Threshold scope with the distance of described induction groove 201.During actual design, the thickness of the 5th bracing frame and the 6th bracing frame is greater than other four bracing frames, embeds in induction groove to make a part of thickness.General in order to adapt to the proximity switch of different detection range, angle bar can be used to make the 5th bracing frame and the 6th bracing frame, like this can in the detection range of angle bar altitude range adjustment proximity switch.
In order to save material and firmly consider, better, described mounting bracket 1 can make the triangular prism structure of hollow, and described first side 102, side 101, second is respectively two sides of triangular prism, and six bracing frames of described mounting bracket 1 are parallel with the incline of triangular prism respectively.Described first side 101 of connection of the bottom surface of described mounting bracket 1 can dispense with a rib of described second side 102, and only relies on the first side 101 of mounting bracket and the second side 102 to support whole mounting bracket 1.
In order to better match with the triangular prism structure of mounting bracket 1, described block 2 can be designed as triangulo column shape, described first fixed block 202 is positioned at the first side of described block 2, and described second fixed block 203 and described induction groove 201 are positioned at the second side of described block 2; The upper bottom surface of described steel wire rope 5 near one end of the first assembly pulley 3 with described block 2 is connected.
Fig. 3 is the position view that proximity switch is installed in the erecting device of proximity switch of the present invention, be installed as example with columniform proximity switch, advanced spacing proximity switch 501 and retreat spacing proximity switch 502 and be fixed in proximity switch mounting groove 105 by nut.Concrete installation steps are:
Step 301: proximity switch 501 (or 502) is embedded in described proximity switch mounting groove 105, the sensitive surface of described proximity switch is towards the plane at described mounting groove 105 place;
Step 302: use nut to be fixed in described proximity switch mounting groove 105 by described proximity switch.
During installation, proximity switch is put into proximity switch mounting groove 105, proximity switch plays the bottom surface of induction effect inside support, and the plane at induction groove place towards described block, tighten the nut at two of proximity switch, utilize two nuts " to be clipped in " in proximity switch mounting groove 105 by proximity switch.
It should be noted that, the induction groove of block 2 (generally needs a certain proportion of area of sensitive surface blocking proximity switch just can trigger proximity switch action) when moving to proximity switch, the distance of the sensitive surface of induction groove and proximity switch should be less than the detecting distance of proximity switch, but can not proximity switch be contacted, in order to adapt to the proximity switch of different model, angle bar can be used to make proximity switch mounting groove, like this can in the detection range of angle bar altitude range adjustment proximity switch.
The operation principle of the erecting device of proximity switch of the present invention is described for the Stroke Control of equipment.First steel wire rope 5 one end near the second assembly pulley 4 is connected with equipment under test, pull steel wire rope 5 to move when equipment under test moves forward, steel wire rope is by the first assembly pulley 3 and the second assembly pulley 4, block 2 is driven to be moved upwards up to the spacing proximity switch 501 that advances, proximity switch 501 sends actuating signal, and transmission signal is to control system, send corresponding instruction again by control system, such as make equipment under test stop motion.When equipment under test retreats, the gravity of block 2 drives steel wire rope motion, and block 2 is moved down into and retreats spacing proximity switch 502, and proximity switch 502 sends actuating signal, and equipment retreats and puts in place, and action stops.
The erecting device of proximity switch provided by the invention, by the impact using pulley and steel wire rope buffering block to produce at the volley, avoids block to be broken by proximity switch.The installation site of proximity switch can also be adjusted when equipment runs in the scope of proximity switch mounting groove, also can change the proximity switch of damage at any time, have structure simple light and handy, go slick, reliability is high, be easy to the advantages such as assembling.
Each embodiment in this specification all adopts the mode of going forward one by one to describe, between each embodiment identical similar part mutually see, what each embodiment stressed is the difference with other embodiments.Above-described embodiment of the present invention, does not form limiting the scope of the present invention.Any amendment done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. an erecting device for proximity switch, is characterized in that, comprising: mounting bracket (1), block (2), the first assembly pulley (3), the second assembly pulley (4) and steel wire rope (5);
Described mounting bracket (1) comprises crossing the first side (101) and the second side (102), described first side (101) comprises first holddown groove (103) of strip, described second side (102) comprises second holddown groove (104) of strip and the proximity switch mounting groove (105) of strip, and described first holddown groove (103), the second holddown groove (104) and described proximity switch mounting groove (105) are parallel to each other;
Described block (2) comprising: induction groove (201), the first fixed block (202), the second fixed block (203), described first fixed block (202) embeds in first holddown groove (103) of described mounting bracket (1), and described second fixed block (203) embeds in second holddown groove (104) of described mounting bracket (1);
Described first assembly pulley (3) is fixed on described mounting bracket (1), and be connected with the second assembly pulley (4) by steel wire rope (5), described steel wire rope (5) is connected with equipment under test near one end of the second assembly pulley (4), the other end is connected with described block (2), and described block (2) is suspended in described mounting bracket (1), described block (2) is slided up and down along described first holddown groove (103) and described second holddown groove (104) under the traction of steel wire rope (5);
The described plane at induction groove (201) place and the distance of described second side (102) meet first threshold scope.
2. erecting device according to claim 1, is characterized in that,
Be connected with the first bracing frame (106) and the second bracing frame (107) between the upper bottom of first side (101) of described mounting bracket (1), between described first bracing frame (106) and the second bracing frame (107), form first holddown groove (103) of strip;
Four bracing frames are connected with between the upper bottom of second side (102) of described mounting bracket (1), be followed successively by the 3rd bracing frame (108), the 4th bracing frame (109), the 5th bracing frame (110), the 6th bracing frame (111), form second holddown groove (104) of strip between described 3rd bracing frame (108) and the 4th bracing frame (109), between described 5th bracing frame (110) and the 6th bracing frame (111), form the proximity switch mounting groove (105) of strip;
Described 5th bracing frame (110) and the 6th bracing frame (111) embed in described induction groove (201), and described 5th bracing frame (110) meets Second Threshold scope with the 6th bracing frame (111) and the distance of described induction groove (201).
3. erecting device according to claim 1 and 2, is characterized in that,
The triangular prism structure that described mounting bracket (1) is hollow, described first side (101), the second side (102) are respectively two sides of triangular prism, and six bracing frames of described mounting bracket are parallel with the incline of described mounting bracket (1) respectively.
4. erecting device according to claim 3, is characterized in that,
Described block (2) is triangulo column shape, described first fixed block (202) is positioned at the first side of described block (2), and described second fixed block (203) and described induction groove (201) are positioned at the second side of described block (2);
Described steel wire rope (5) is connected with the upper bottom surface of described block (2) near one end of the first assembly pulley (3).
5. erecting device according to claim 4, is characterized in that,
Described first assembly pulley (3) is fixed on the upper bottom surface of described mounting bracket (1), and is connected with the upper bottom surface of described block (2) through the hole of described mounting bracket (1) upper bottom surface;
Described second assembly pulley (4) is fixed in any plane.
6. the erecting device according to claim 4 or 5, is characterized in that,
A rib of the bottom surface of described mounting bracket (1) omits, and described rib is the rib connecting described first side (101) and described second side (102).
7. an installation method for proximity switch, described installation method uses the erecting device in claim 1 to 6 described in any one to install proximity switch, and it is characterized in that, described installation method comprises:
Embedded by proximity switch in the proximity switch mounting groove (105) of described erecting device, the sensitive surface of described proximity switch is towards the plane at described mounting groove (105) place;
Nut is used to be fixed on by described proximity switch in described proximity switch mounting groove (105).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410458075.4A CN104269288B (en) | 2014-09-09 | 2014-09-09 | A kind of erecting device of proximity switch and installation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410458075.4A CN104269288B (en) | 2014-09-09 | 2014-09-09 | A kind of erecting device of proximity switch and installation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104269288A true CN104269288A (en) | 2015-01-07 |
| CN104269288B CN104269288B (en) | 2016-04-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410458075.4A Expired - Fee Related CN104269288B (en) | 2014-09-09 | 2014-09-09 | A kind of erecting device of proximity switch and installation method |
Country Status (1)
| Country | Link |
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| CN (1) | CN104269288B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108597923A (en) * | 2018-07-11 | 2018-09-28 | 金辉 | It is a kind of close to switch mounting |
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| EP0007592A1 (en) * | 1978-08-01 | 1980-02-06 | Richard Haller | Limit switch device for a lifting apparatus |
| US5005923A (en) * | 1990-03-09 | 1991-04-09 | Spacesaver Corporation | Limit switch assembly for mobile storage apparatus |
| JPH07252045A (en) * | 1994-03-16 | 1995-10-03 | Mitsubishi Denki Bill Techno Service Kk | Elevator control device |
| JPH11306906A (en) * | 1998-04-22 | 1999-11-05 | Mitsubishi Heavy Ind Ltd | Limit switch |
| CN201054576Y (en) * | 2007-05-22 | 2008-04-30 | 上海宝钢设备检修有限公司 | Adjusting device for quick installation near to switch |
| CN101257298A (en) * | 2007-02-28 | 2008-09-03 | 江苏长虹涂装机械有限公司 | Proximity switch induce bracket |
| CN202601446U (en) * | 2012-04-25 | 2012-12-12 | 南京梅山冶金发展有限公司 | Fixing device for proximity switch |
| CN202796524U (en) * | 2012-09-24 | 2013-03-13 | 山东科技大学 | Proximity switch installation structure |
| CN204029642U (en) * | 2014-09-09 | 2014-12-17 | 山东钢铁股份有限公司 | A kind of erecting device of proximity switch |
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2014
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Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0007592A1 (en) * | 1978-08-01 | 1980-02-06 | Richard Haller | Limit switch device for a lifting apparatus |
| US5005923A (en) * | 1990-03-09 | 1991-04-09 | Spacesaver Corporation | Limit switch assembly for mobile storage apparatus |
| JPH07252045A (en) * | 1994-03-16 | 1995-10-03 | Mitsubishi Denki Bill Techno Service Kk | Elevator control device |
| JPH11306906A (en) * | 1998-04-22 | 1999-11-05 | Mitsubishi Heavy Ind Ltd | Limit switch |
| CN101257298A (en) * | 2007-02-28 | 2008-09-03 | 江苏长虹涂装机械有限公司 | Proximity switch induce bracket |
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| CN202601446U (en) * | 2012-04-25 | 2012-12-12 | 南京梅山冶金发展有限公司 | Fixing device for proximity switch |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108597923A (en) * | 2018-07-11 | 2018-09-28 | 金辉 | It is a kind of close to switch mounting |
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| CN104269288B (en) | 2016-04-20 |
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Inventor after: Zhang Fen Inventor after: Di Nuo Inventor after: Zhao Lin Inventor after: Shen Min Inventor after: Bian Fang Inventor after: Cao Yongqin Inventor after: Li Chuanjing Inventor after: Zhang Kai Inventor after: Zhang Jie Inventor after: Liu Liying Inventor after: Li Kun Inventor after: Shi Rongpeng Inventor after: Li Shan Inventor after: Wang Shengzhang Inventor before: Di Nuo Inventor before: Bian Fang Inventor before: Zhang Jie Inventor before: Cao Yongqin Inventor before: Zhao Lin Inventor before: Shen Min Inventor before: Li Chuanjing Inventor before: Liu Liying Inventor before: Li Kun Inventor before: Shi Rongpeng Inventor before: Li Shan Inventor before: Wang Shengzhang |
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Granted publication date: 20160420 Termination date: 20170909 |