CN112736568A - Anti-drop plug for exhaust purification processing apparatus - Google Patents
Anti-drop plug for exhaust purification processing apparatus Download PDFInfo
- Publication number
- CN112736568A CN112736568A CN202011593724.3A CN202011593724A CN112736568A CN 112736568 A CN112736568 A CN 112736568A CN 202011593724 A CN202011593724 A CN 202011593724A CN 112736568 A CN112736568 A CN 112736568A
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- plug
- wall
- socket
- fixedly connected
- drop
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- 238000000746 purification Methods 0.000 title claims abstract description 20
- 239000012530 fluid Substances 0.000 claims abstract description 30
- 238000001125 extrusion Methods 0.000 claims abstract description 25
- 239000007787 solid Substances 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 3
- 229920002545 silicone oil Polymers 0.000 claims description 3
- 230000009471 action Effects 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 11
- 239000002912 waste gas Substances 0.000 abstract description 9
- 239000007788 liquid Substances 0.000 abstract description 6
- 238000010030 laminating Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000004907 flux Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006552 photochemical reaction Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000011163 secondary particle Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/6205—Two-part coupling devices held in engagement by a magnet
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/629—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/639—Additional means for holding or locking coupling parts together, after engagement, e.g. separate keylock, retainer strap
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
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- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The invention relates to the technical field of waste gas treatment and discloses an anti-drop plug for a waste gas purification treatment device. This anti-drop plug for exhaust purification processing apparatus, drive the extrusion stem motion through the plug, the extrusion stem drives the motion of spring post, rethread electrorheological fluids uses with the cooperation of warping the cover, thereby reach the effect fixed to the plug, along with the extrusion stem is under the effect of spacing groove, continuous extrudeing the spring post, the piston will press the continuous extrusion of the electrorheological fluids of intracavity portion, warp the cover and receive the hydraulic action of electrorheological fluids and take place deformation and draw-in groove inner wall laminating, when the plug inserts the socket completely, the magnetic path inter attraction, lead electrical pillar circular telegram, the electrorheological fluids is changed into solid-state by liquid, thereby realize fixed effect.
Description
Technical Field
The invention relates to the technical field of waste gas treatment, in particular to an anti-drop plug for a waste gas purification treatment device.
Background
With the continuous development of the production and manufacturing industry in China, the demand for some chemical products is increased year by year, in the production and use process, the generated waste gas contains a certain amount of various organic matters and is directly discharged into the atmosphere to seriously pollute the environment, photochemical smog is formed due to the photochemical reaction between the discharged gas and the air, and the photochemical smog is also an important condition for forming secondary particle organic matters in the atmosphere and has great harm to the atmospheric environment and the human health.
The existing waste gas treatment device is connected with an external circuit through a plug for power supply operation, the plug and a socket are loosened due to long-time use, the equipment is powered off or cannot be normally used due to poor contact due to vibration generated during operation of the equipment, and even potential safety hazards such as equipment shutdown and the like due to electric shock of personnel and fire disasters exist.
Therefore, we propose an anti-drop plug for an exhaust gas purification device to solve the above problems.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides the anti-falling plug for the waste gas purification treatment device, which has the advantage of preventing the plug from falling off under the action of external force and solves the problem that the traditional plug is easy to fall off to cause equipment to stop running.
(II) technical scheme
In order to achieve the purpose of preventing the plug from falling off under the action of external force, the invention provides the following technical scheme: the utility model provides an anti-drop plug for exhaust purification processing apparatus, which comprises a socket, socket middle part inner wall fixedly connected with piezo-resistor, socket middle part inner wall fixedly connected with negative plate, socket middle part inner wall fixedly connected with coil, socket middle part inner wall swing joint has the plug, plug middle part inner wall fixedly connected with dielectric plate, plug middle part inner wall fixedly connected with electromagnet, socket middle part inner wall fixedly connected with burden positive plate, the draw-in groove has been seted up to socket middle part inner wall, plug top fixedly connected with water conservancy diversion post, water conservancy diversion post outside fixedly connected with warp the cover, water conservancy diversion post middle part inner wall fixedly connected with leads electrical pillar, water conservancy diversion post inner wall swing joint has electrorheological fluid, plug middle part inner wall swing joint has the stripper bar, stripper bar bottom fixedly connected with spring post.
Preferably, the socket middle part is provided with the jack that matches with the plug and jack inner wall both sides all set up with the spacing groove of stripper bar adaptation, roof fixedly connected with magnetic path in the socket, the magnetism of plug top fixedly connected with magnetic path and two magnetic path opposite faces is the same, supplementary interconnect between the two when plug and socket are inserted and are closed.
Preferably, the size of the dielectric plate is larger than that of the positive plate and the negative plate and smaller than that of the plug, and the dielectric plate is used for changing the voltage between the two plates by changing the relative areas of the positive plate and the negative plate so as to control the working voltage of the piezoresistor.
Preferably, the size of the electromagnet is smaller than that of the plug, the magnetic pole at the top of the electromagnet is an S pole, when the electromagnet is electrified, a magnetic field is generated, and when the electromagnet moves outwards, the coil generates an induced current to generate a magnetic field to block the electromagnet from moving.
Preferably, the inner diameter of the deformation sleeve is larger than the outer diameter of the flow guide column, the deformation sleeve is made of high-toughness rubber, the deformation sleeve deforms under the extrusion of the electrorheological fluid to be attached to the inner wall of the clamping groove, the electrorheological fluid is electrified to be solid, and the clamping effect is achieved.
Preferably, the electrorheological fluid is composed of solid particles with high dielectric constant and silicone oil with low dielectric constant, the electrorheological fluid is directly contacted with the conductive column, and the electrorheological fluid is changed from liquid state to solid state after being electrified.
Preferably, the outer side of the spring column is movably connected with the inner wall of the pressure cavity, the height of the spring column is smaller than the depth of the pressure cavity, and the spring column drives the piston to move to extrude the electrorheological fluid in the pressure cavity.
Preferably, the extrusion rod is perpendicular to the plug and the socket respectively, the size of the extrusion rod is smaller than that of the plug, and the extrusion rod extrudes the spring column under the action of the limiting groove.
(III) advantageous effects
Compared with the prior art, the invention provides an anti-drop plug for a waste gas purification treatment device, which has the following beneficial effects:
1. this anti-drop plug for exhaust purification processing apparatus, drive the extrusion stem motion through the plug, the extrusion stem drives the motion of spring post, rethread electrorheological fluids uses with the cooperation of warping the cover, thereby reach the effect fixed to the plug, the water conservancy diversion post will warp the cover and insert the draw-in groove inner wall, along with the extrusion stem under the effect of spacing groove, continuous extrudees the spring post, the piston will press the continuous extrusion of the electrorheological fluids of intracavity portion, warp the cover and receive the hydraulic action of electrorheological fluids and take place deformation and draw-in groove inner wall laminating, when the plug inserts the socket completely, the magnetic path inter attraction, lead the circular telegram of electrical pillar, electrorheological fluids is changed into solid-state by liquid, thereby realize fixed effect.
2. This anti-drop plug for exhaust purification processing apparatus, drive the motion of dielectric medium board through the plug, the dielectric medium board drives the positive plate, the negative plate operation, rethread thermistor and electromagnet's cooperation is used, thereby reach the effect that prevents the plug and drop, when the plug moves to the outside, the electromagnet takes place to remove, the magnetic flux that the electromagnet produced in the coil at this moment reduces, the coil produces induced-current, produce the magnetic flux change that magnetic field hinders the coil, make the electromagnet have upward movement's trend, consequently, the plug upward movement under the effect of electromagnet, it moves to the outside to hinder the plug.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a partially enlarged view of the portion A of FIG. 1 according to the present invention;
FIG. 3 is a partially enlarged view of the portion B shown in FIG. 1 according to the present invention;
fig. 4 is a schematic diagram of the plug of the present invention.
In the figure: 1. a socket; 2. a voltage dependent resistor; 3. a negative plate; 4. a coil; 5. a dielectric plate; 6. a plug; 7. an electromagnet; 8. a positive plate; 9. a card slot; 10. a conductive post; 11. deforming the sleeve; 12. electrorheological fluid; 13. a spring post; 14. pressing the cavity; 15. a piston; 16. an extrusion stem; 17. and a flow guide column.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Please refer to fig. 1-4, an anti-drop plug for a waste gas purification treatment device, comprising a socket 1, wherein a jack matched with a plug 6 is arranged in the middle of the socket 1, two sides of the inner wall of the jack are respectively provided with a limit groove matched with an extrusion rod 16, the inner wall of the inner top wall of the socket 1 is fixedly connected with a magnetic block, the magnetic properties of the opposite surfaces of the magnetic block and the magnetic block at the top of the plug 6 are the same, when the plug 6 is plugged with the socket 1, the plug 6 is connected with the socket 1, the inner wall of the middle of the socket 1 is fixedly connected with a piezoresistor 2, the inner wall of the middle of the socket 1 is fixedly connected with a negative plate 3, the inner wall of the middle of the socket 1 is fixedly connected with a coil 4, the inner wall of the middle of the socket 1 is movably connected with a plug 6, the inner wall of the middle of the plug 6 is fixedly connected with The working voltage of the piezoresistor 2 is controlled at present, an electromagnet 7 is fixedly connected to the inner wall of the middle part of a plug 6, the size of the electromagnet 7 is smaller than that of the plug 6, the magnetic pole at the top of the electromagnet 7 is S pole, when the electromagnet 7 is electrified, a magnetic field is generated, when the electromagnet 7 moves outwards, a coil 4 generates induction current to generate a magnetic field to block the electromagnet 7 from moving, a negative and positive pole plate 8 is fixedly connected to the inner wall of the middle part of a socket 1, a clamping groove 9 is formed in the inner wall of the middle part of the socket 1, a guide post 17 is fixedly connected to the top of the plug 6, a deformation sleeve 11 is fixedly connected to the outer side of the guide post 17, the inner diameter of the deformation sleeve 11 is larger than the outer diameter of the guide post 17, the deformation sleeve 11 is made of high-toughness rubber, deformation sleeve 11 deforms under the extrusion of an electrorheological fluid 12, the inner wall of the flow guide column 17 is movably connected with an electrorheological fluid 12, the electrorheological fluid 12 is composed of solid particles with high dielectric constant and silicone oil with low dielectric constant, the electrorheological fluid 12 is directly contacted with the conductive column 10, the electrorheological fluid 12 is changed from liquid state to solid state after being electrified, the inner wall of the middle part of the plug 6 is movably connected with an extrusion rod 16, the extrusion rod 16 is respectively vertical to the plug 6 and the socket 1, the size of the extrusion rod 16 is smaller than that of the plug 6, the extrusion rod 16 extrudes the spring column 13 under the action of a limiting groove, the bottom of the extrusion rod 16 is fixedly connected with the spring column 13, the outer side of the spring column 13 is movably connected with the inner wall of the pressure cavity 14, the height of the spring column 13 is smaller than the depth of the pressure cavity 14, the spring column 13 drives the piston 15 to move to extrude the electrorheological fluid 12 in the pressure cavity 14.
The working principle is as follows: the plug 6 is inserted through a jack in the middle of the socket 1, the plug 6 drives the dielectric plate 5 to move, when the plug 6 moves to the top of the limiting groove, the flow guide column 17 inserts the deformation sleeve 11 into the inner wall of the clamping groove 9, the spring column 13 is continuously extruded along with the extrusion rod 16 under the action of the limiting groove, the piston 15 continuously extrudes the electrorheological fluid 12 in the pressure cavity 14, the deformation sleeve 11 deforms under the hydraulic action of the electrorheological fluid 12 to be attached to the inner wall of the clamping groove 9, when the plug 6 is completely inserted into the socket 1, the magnetic blocks attract each other, the conductive column 10 is electrified, the electrorheological fluid 12 is changed from a liquid state to a solid state, the dielectric plate 5 moves to the topmost point, the relative area of the positive plate 8 and the negative plate 3 is the smallest, the voltage between the two polar plates is the smallest, the working voltage of the piezoresistor 2 is reached, the electromagnet 7 is electrified, and the coil, thereby realizing the effect of electrifying;
when the plug 6 tends to move outwards under the action of external force, or the plug 6 shakes to slightly shift and misplace, at this time, the plug 6 is fixed on the inner wall of the clamping groove 9 under the action of the electrorheological fluid 12, when the energizing end of the electrorheological fluid 12 is broken by the external force, the electrorheological fluid 12 is changed from a solid state to a liquid state, at this time, the plug 6 falls off from the inner wall of the jack, because the relative position of the dielectric plate 5 is not influenced by the shift position of the plug 6, at this time, the electromagnet 7 is in the energizing state, according to lenz's law, when the plug 6 moves outwards, the electromagnet 7 moves, at this time, the magnetic flux generated by the electromagnet 7 in the coil 4 is reduced, the coil 4 generates induction current, a magnetic field to hinder the magnetic flux change of the coil 4, so that the electromagnet 7 has an upward movement, the plug 6 is prevented from moving outwards, the plug 6 and the socket 1 are plugged again under the action of the magnetic blocks, and when the equipment needs to be powered off, the plug 6 and the socket 1 are separated by powering off an external circuit.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides an anti-drop plug for exhaust purification processing apparatus, includes socket (1), its characterized in that: the inner wall of the middle part of the socket (1) is fixedly connected with a piezoresistor (2), the inner wall of the middle part of the socket (1) is fixedly connected with a negative plate (3), the inner wall of the middle part of the socket (1) is fixedly connected with a coil (4), the inner wall of the middle part of the socket (1) is movably connected with a plug (6), the inner wall of the middle part of the plug (6) is fixedly connected with a dielectric plate (5), the inner wall of the middle part of the plug (6) is fixedly connected with an electromagnet (7), the inner wall of the middle part of the socket (1) is fixedly connected with a negative plate (8), the inner wall of the middle part of the socket (1) is provided with a clamping groove (9), the top of the plug (6) is fixedly connected with a guide pillar (17), the outer side of the guide pillar (17) is fixedly connected with a deformation, the bottom of the extrusion rod (16) is fixedly connected with a spring column (13), the middle part of the plug (6) is provided with a pressure cavity (14), and the bottom of the spring column (13) is fixedly connected with a piston (15).
2. The drop-proof plug for the exhaust gas purification treatment device according to claim 1, characterized in that: the middle of the socket (1) is provided with a jack matched with the plug (6), and both sides of the inner wall of the jack are provided with limit grooves matched with the extrusion rods (16).
3. The drop-proof plug for the exhaust gas purification treatment device according to claim 1, characterized in that: the size of the dielectric plate (5) is larger than that of the positive plate (8) and the negative plate (3) and is smaller than that of the plug (6).
4. The drop-proof plug for the exhaust gas purification treatment device according to claim 1, characterized in that: the size of the electromagnet (7) is smaller than that of the plug (6), and the magnetic pole at the top of the electromagnet (7) is an S pole.
5. The drop-proof plug for the exhaust gas purification treatment device according to claim 1, characterized in that: the inner diameter of the deformation sleeve (11) is larger than the outer diameter of the guide column (17), and the deformation sleeve (11) is made of high-toughness rubber.
6. The drop-proof plug for the exhaust gas purification treatment device according to claim 1, characterized in that: the electrorheological fluid (12) is composed of solid particles with high dielectric constant and silicone oil with low dielectric constant, and the electrorheological fluid (12) is directly contacted with the conductive column (10).
7. The drop-proof plug for the exhaust gas purification treatment device according to claim 1, characterized in that: the outer side of the spring column (13) is movably connected with the inner wall of the pressure cavity (14), and the height of the spring column (13) is smaller than the depth of the pressure cavity (14).
8. The drop-proof plug for the exhaust gas purification treatment device according to claim 1, characterized in that: the extrusion rod (16) is respectively perpendicular to the plug (6) and the socket (1), and the size of the extrusion rod (16) is smaller than that of the plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011593724.3A CN112736568A (en) | 2020-12-29 | 2020-12-29 | Anti-drop plug for exhaust purification processing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011593724.3A CN112736568A (en) | 2020-12-29 | 2020-12-29 | Anti-drop plug for exhaust purification processing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112736568A true CN112736568A (en) | 2021-04-30 |
Family
ID=75607513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011593724.3A Pending CN112736568A (en) | 2020-12-29 | 2020-12-29 | Anti-drop plug for exhaust purification processing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112736568A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113071800A (en) * | 2021-05-20 | 2021-07-06 | 王晓东 | Anti-drop fixing device is used in industrial engineering pipeline transportation |
| CN113752053A (en) * | 2021-10-14 | 2021-12-07 | 何水莲 | Numerically-controlled machine tool clamping device and method for clamping multiple workpieces at one time and machining in turn |
| CN113839270A (en) * | 2021-09-24 | 2021-12-24 | 李明杰 | Binding post wiring dropout prevention means of sensor |
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| CN1515658A (en) * | 2003-01-10 | 2004-07-28 | 西北工业大学 | Titanium dioxide/montmorillonite multiphase granules electro-rheologic fluid material and its preparation method |
| CN105317041A (en) * | 2015-10-27 | 2016-02-10 | 南京空山新雨环保科技有限公司 | Electromagnetic pile driver |
| CN111370937A (en) * | 2020-03-03 | 2020-07-03 | 绍兴市寅川软件开发有限公司 | Waterproof socket and plug for preventing mistaken pulling of computer |
| CN111628322A (en) * | 2020-07-06 | 2020-09-04 | 王璟 | Electric current liquid formula of changing lathe is with preventing mistake and pulls out socket based on electric capacity |
| CN112018565A (en) * | 2020-08-31 | 2020-12-01 | 李顺清 | Anti-drop power plug and socket for koji machine |
-
2020
- 2020-12-29 CN CN202011593724.3A patent/CN112736568A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1515658A (en) * | 2003-01-10 | 2004-07-28 | 西北工业大学 | Titanium dioxide/montmorillonite multiphase granules electro-rheologic fluid material and its preparation method |
| CN105317041A (en) * | 2015-10-27 | 2016-02-10 | 南京空山新雨环保科技有限公司 | Electromagnetic pile driver |
| CN111370937A (en) * | 2020-03-03 | 2020-07-03 | 绍兴市寅川软件开发有限公司 | Waterproof socket and plug for preventing mistaken pulling of computer |
| CN111628322A (en) * | 2020-07-06 | 2020-09-04 | 王璟 | Electric current liquid formula of changing lathe is with preventing mistake and pulls out socket based on electric capacity |
| CN112018565A (en) * | 2020-08-31 | 2020-12-01 | 李顺清 | Anti-drop power plug and socket for koji machine |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113071800A (en) * | 2021-05-20 | 2021-07-06 | 王晓东 | Anti-drop fixing device is used in industrial engineering pipeline transportation |
| CN113071800B (en) * | 2021-05-20 | 2024-07-05 | 重庆派领地面防滑工程技术有限公司 | Anti-drop fixing device for industrial engineering pipeline transportation |
| CN113839270A (en) * | 2021-09-24 | 2021-12-24 | 李明杰 | Binding post wiring dropout prevention means of sensor |
| CN113839270B (en) * | 2021-09-24 | 2024-01-12 | 李明杰 | Binding post wiring anti-drop device of sensor |
| CN113752053A (en) * | 2021-10-14 | 2021-12-07 | 何水莲 | Numerically-controlled machine tool clamping device and method for clamping multiple workpieces at one time and machining in turn |
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Application publication date: 20210430 |
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| RJ01 | Rejection of invention patent application after publication |