CN114976814B - Preformed hole plugging device for narrow space - Google Patents
Preformed hole plugging device for narrow space Download PDFInfo
- Publication number
- CN114976814B CN114976814B CN202210546737.8A CN202210546737A CN114976814B CN 114976814 B CN114976814 B CN 114976814B CN 202210546737 A CN202210546737 A CN 202210546737A CN 114976814 B CN114976814 B CN 114976814B
- Authority
- CN
- China
- Prior art keywords
- negative pressure
- adsorption tube
- adsorption
- pressure source
- plugging
- 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.)
- Active
Links
- 238000001179 sorption measurement Methods 0.000 claims abstract description 97
- 239000000463 material Substances 0.000 claims abstract description 46
- 230000000903 blocking effect Effects 0.000 claims abstract description 35
- 238000009434 installation Methods 0.000 claims abstract description 28
- 238000003780 insertion Methods 0.000 claims description 8
- 230000037431 insertion Effects 0.000 claims description 8
- 238000000034 method Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/20—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for assembling or disassembling contact members with insulating base, case or sleeve
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Hooks, Suction Cups, And Attachment By Adhesive Means (AREA)
Abstract
The application discloses a preformed hole plugging device for a narrow space, which comprises an adsorption pipe and a negative pressure source, wherein one end of the adsorption pipe is communicated with the adsorption pipe, and the other end of the adsorption pipe is used for installing a plugging material; when the plug is used, negative pressure is formed in the adsorption tube through the negative pressure source, so that the plug is fixed in the adsorption tube through forming air pressure difference at two ends of the plug, and then the plug is inserted into the electric connector through the slender adsorption tube, so that the plug is quickly installed; compared with the prior art, the application meets the installation requirement of electrically connecting a narrow space through the slender adsorption tube, and has the advantages of simple structure and convenient operation; the application fixes the blocking object through negative pressure, not only simplifies the operation mode, but also can not scratch or crush the surface of the blocking object due to excessive clamping, and can stably take the blocking object without generating excessive residues; and the depth of the plugging object inserted into the electric connector is standardized when the plugging device is used, so that the plugging quality is improved.
Description
Technical Field
The application relates to the technical field of aviation processing equipment, in particular to a preformed hole plugging device for a narrow space.
Background
In various electronic systems of weapon equipment, the electrical connectors are used for electrical connection and signal transmission among devices, assemblies and components, and systems and are necessary basic elements for forming a complete system; the electrical connectors can be classified into circular electrical connectors and rectangular electrical connectors according to the shape classification, and the circular electrical connectors are widely and widely used on military precision equipment (aviation and aerospace) due to the characteristics of the structures of the circular electrical connectors.
In the use process of the electric connector, certain holes are reserved for standby for maintenance, so that the number of the actually used wires is generally smaller than the number of the holes on the electric connector with standard specification; in order to prevent the preformed hole from being directly communicated with the outside to cause the entry of foreign matters (liquid, solid, dust and the like) and further influence the conductive performance of the wire harness, an unused hole of the electric connector needs to be plugged by using a plugging object, the plugging object is usually a single-end expansion columnar object with a small diameter of 1-5 mm and a length of not more than 10mm, the plugging object is manually clamped by a clamp and other tools for manual plugging, the clamp and other tools are large and are limited by the structure of the electric connector and interfered by an installed cable, and therefore, the plugging object is extremely inconvenient to install.
Disclosure of Invention
The application mainly aims to provide a preformed hole plugging device for a narrow space, which aims to solve the defect that an electric connector is inconvenient to plug in the prior art.
In order to achieve the above object, the present application provides a preformed hole plugging device for a narrow space, comprising an adsorption tube;
the negative pressure source is connected with the adsorption tube, one end of the adsorption tube is used for installing the blocking object, the other end of the adsorption tube is communicated with the negative pressure source, and the negative pressure source forms negative pressure in the adsorption tube so as to fix the blocking object.
Optionally, the plugging device further comprises an adapter, one end of the adapter is connected with the adsorption tube, and the other end of the adapter is connected with the negative pressure source.
Optionally, the adapter with the adsorption tube screw thread links to each other, the other end of adapter is provided with the spacing groove, be provided with on the negative pressure source with the quick-operation joint of spacing groove adaptation.
Optionally, the negative pressure source is a micro vacuum machine or an air compressor.
Optionally, the inner wall of the adsorption tube is provided with a limiting ring for limiting the insertion depth of the blocking object.
Optionally, the distance between the limiting ring and the orifice of the adsorption tube is 1.5-2 times of the diameter of the blocking object.
Optionally, the outer wall of the adsorption tube is provided with a plurality of step surfaces, and the diameter of each step surface is linearly reduced along the direction deviating from the negative pressure source.
Optionally, the adsorption tube has a conical structure with a small end for fixing the plug.
Optionally, a limiting step for limiting the installation depth of the plugging material is further arranged on the outer wall of the adsorption tube; the cross section of the limiting step is conical.
Optionally, the minimum through-flow surface diameter of the adsorbent tube satisfies the following relationship:wherein P represents the pressure in the adsorption tube, and m is the weight of the plugging material.
Compared with the prior art, the application has the following beneficial effects:
the application comprises an adsorption pipe and a negative pressure source, wherein one end of the adsorption pipe is communicated with the adsorption pipe, and the other end of the adsorption pipe is used for installing a plugging material; when the technical scheme is used, negative pressure is formed in the adsorption pipe through a negative pressure source, and as the other end of the adsorption pipe is plugged by the plugging material, atmospheric pressure difference is formed at the two ends of the plugging material, and then the plugging material is fixed on the adsorption pipe through the atmosphere; inserting the blocking object into a station to be installed through an elongated adsorption pipe to realize rapid installation of the blocking object; after the installation is finished, the negative pressure source is cut off, and a certain gap is reserved between the blocking object and the adsorption pipe, so that after the negative pressure disappears, air in the atmosphere enters the adsorption pipe, and further the air pressure balance at two sides of the blocking object is realized, and the blocking object naturally falls off.
Firstly, the plugging material is sent into the electric connector with a narrow installation space through the slender adsorption pipe, and compared with the traditional clamp, the caliber of the adsorption pipe is smaller, so that interference or scratch with an installed cable can be effectively avoided, and the cable is protected;
secondly, the application fixes the blocking object on the adsorption pipe by forming negative pressure in the adsorption pipe, on one hand, the fixing mode does not need to add any additional fixing part, and the structure of the adsorption pipe can be simplified to the greatest extent on the premise of ensuring the installation stability; on the other hand, the blocking object is fixed in a vacuum negative pressure mode, the stress of the blocking object is uniform, and the stability of the blocking object in the adsorption tube is good; meanwhile, compared with the traditional clamp clamping mode, the external clamping equipment is not needed, so that the damage of the clamping equipment to the outer surface of the plugging material can be fundamentally avoided, and the plugging quality of the plugging material is improved; meanwhile, as the plugging material is fixed through negative pressure, the negative pressure is mainly controlled by a negative pressure source, and workers can accurately adjust the negative pressure according to the needs, compared with the traditional clamping mode, the negative pressure type plugging material can furthest reduce the requirements on workers.
Finally, the plugging material is installed through the slender adsorption tube, and the negative pressure is combined to fix the plugging material, so that the volume of the installation end of the plugging material can be simplified to the greatest extent by combining the two, and the plugging material can be inserted into any installation station through the adsorption tube; meanwhile, a worker can realize quick installation of the blocking object in a plugging mode, after the negative pressure source is cut off, the blocking object and the adsorption tube are automatically separated, and the adsorption tube is convenient to detach, so that the installation efficiency is high, and meanwhile, the installation difficulty of the blocking object is reduced to the greatest extent.
Drawings
Fig. 1 is a schematic structural diagram of a preformed hole plugging device for a narrow space according to an embodiment of the present application;
FIG. 2 is an exploded view of a preformed hole plugging device for a confined space according to an embodiment of the present application;
FIG. 3 is a cross-sectional view of a preformed hole plugging device for a narrow space according to an embodiment of the present application;
fig. 4 is a working schematic diagram of a preformed hole plugging device for a narrow space according to an embodiment of the present application;
reference numerals: the device comprises a 1-adsorption tube, a 2-negative pressure source, a 3-adapter, a 4-limit groove, a 5-quick connector, a 6-limit ring, a 7-step surface, an 8-limit step and a 9-plug.
The achievement of the objects, functional features and advantages of the present application will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present application are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
In the present application, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present application, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present application.
Embodiment 1
Referring to fig. 1 to 4, the application discloses a preformed hole plugging device for a narrow space, which comprises an adsorption pipe 1 and a negative pressure source 2, wherein the adsorption pipe 1 is of a hollow structure, an external thread is arranged on the outer surface of one end of the adsorption pipe 1, the plugging device also comprises an adapter 3, an internal thread is arranged on the adapter 3, and the connection between the adsorption pipe 1 and the adapter 3 is realized through the cooperation of the internal thread and the external thread; the free end of the adapter 3 is provided with an annular limiting groove 4, and a quick connector 5 is connected through the limiting groove 4; in order to improve the sealing performance, a rubber sealing ring can be arranged between the adapter 3 and the quick connector 5;
the negative pressure source 2 is a micro vacuum machine or an air compressor as required, if the negative pressure source is a micro vacuum machine, the quick connector 5 is directly connected with the micro vacuum machine through an air pipe, and the micro vacuum machine has the advantages of small volume and convenient operation and has strong adaptability to a narrow space; if the air compressor is an air compressor, the air compressor can be connected with a plurality of quick connectors 5 in parallel at the same time; meanwhile, the quick connector 5 can be connected with the existing vacuum pipeline of the factory through a gas pipe;
through the arrangement of the adapter 3, the application can realize the rapid switching of different air sources and meet different use requirements; meanwhile, as the adsorption tube 1 is connected with the adapter 3 through screw threads, workers can quickly replace the adsorption tubes 1 with different specifications according to the needs, so that different use requirements are met;
the adsorption tube 1 is of a hollow structure, a negative pressure cavity is arranged in the adsorption tube, one end of the negative pressure cavity is communicated with the negative pressure source 2 through the adapter 3, the other end of the negative pressure cavity is provided with a limiting ring 6, and the middle part of the limiting ring 6 is provided with an air flow hole;
the depth of plugging objects inserted into the negative pressure cavity can be effectively controlled through the arrangement of the limiting ring, on one hand, the depth of each plugging object inserted into the adsorption tube can be ensured to be consistent through the limiting ring, and as the plugging objects are standard components, the exposed lengths of the plugging objects are identical, and further, the same depth of the plugging objects inserted into the electric connector is ensured, so that standardized installation of the plugging objects is realized; in the prior art, as auxiliary devices such as clamps are used for installing the plugging materials, the insertion depths of different plugging materials into the electric connector are different, so that the plugging materials are firmly installed when the plugging materials are inserted deeply, and the plugging materials are easy to loosen and even drop in the vibration process when the plugging materials are inserted shallowly; by adopting the technical scheme of the application, the insertion depth of each plugging material is standardized, so that the technical problems are fundamentally solved, and the installation quality of the plugging material is greatly improved.
On the other hand, by limiting the insertion depth, the defect that the plugging material is not enough in length and even cannot be normally inserted into the electric connector in the later stage due to too deep insertion of the adsorption tube can be avoided to the greatest extent while the installation stability and the convenience of insertion are ensured;
in addition, the axial limiting force formed by limiting can ensure stability of the blocking object 9 no matter how the negative pressure provided by the negative pressure source 2 changes, so that the blocking object 9 and the adsorption tube 1 are prevented from being blocked or the blocking object 9 is directly adsorbed into the adapter 3 due to overlarge negative pressure, and the stability and reliability of equipment operation are greatly improved; meanwhile, the functions can be realized through the limiting ring 6, the structure is simple, the reliability is high, the structure of the adsorption tube 1 can be simplified to the greatest extent, and the special requirement of a narrow installation space is met;
in order to ensure the limit effect on the blocking object 9, the distance between the limit ring 6 and the pipe orifice of the adsorption pipe 1 is 1.5-2 times of the diameter of the blocking object 9, if the blocking object 9 is in a T-shaped structure, the distance is 1.5-2 times of the diameter of the big head end of the blocking object 9; the pipe orifice of the adsorption pipe 1 is an end face for installing one end of the plugging material 9;
the air flow hole in the middle of the limiting ring 6 is the minimum through flow area of the negative pressure cavity, so as to ensure the fixing effect on the plugging material 9; from the stress analysis, the following relation exists at the airflow hole;wherein S represents the area of the airflow hole in mm 2 M represents the weight of the closure 9 itself, in grams; p represents the negative pressure in the adsorption tube 1, and the unit is MPa;
i.e.Wherein 10 is a unified unit of adjustment parameters; it can be seen from the above that the diameter of the air flow hole needs to satisfy the following formula +.>Wherein P represents the pressure in the adsorption tube 1, m is the weight of the plugging material, and the preferable value of P is more than or equal to 2.2MPa;
in order to further improve the adaptability of the adsorption tube 1 to a narrow installation space, the cross section of the adsorption tube 1 is conical, the small end of the adsorption tube is used for placing a plugging object 9, a plurality of stages of step surfaces 7 can be arranged on the outer wall of the adsorption tube 1, and the diameters of the stages of step surfaces 7 are linearly reduced along the direction deviating from the negative pressure source 2; the pipe diameter of the adsorption pipe 1 is gradually reduced through each stage of step surfaces 7, the diameter of the stage of step surface 7 for installing the plugging material 9 is minimum, and meanwhile, the stage of step is a limit step 8, and the cross section of the stage of step is of a conical structure;
the arrangement of the step surface 7 not only can effectively reduce the diameter of the adsorption tube 1 and meet the installation requirement of a narrow space, but also can effectively limit the length of the plugging objects 9 inserted into the electric connector through the limiting step 8, and simultaneously can ensure the standardization of the length of each plugging object 9 inserted into the electric connector and avoid damaging the sealing rubber ring of the electric connector due to over-deep insertion; the operation is convenient, the structure is simple, the outer diameter of the adsorption tube 1 is not increased, and the adsorption tube is favorable for adapting to a narrow installation space;
when the application is used, firstly, the adsorption pipe with corresponding specification is selected according to the size of the plugging material, and then the adsorption pipe is communicated with a negative pressure source through an adapter, a quick connector and the like;
installing the plugging material in the adsorption tube, and forming negative pressure for adsorption fixation in the adsorption tube by starting a negative pressure source; then inserting the adsorption tube into the electric connector, ensuring that the plugging material is inserted into a mounting hole on the electric connector, when the limiting step is in contact with the electric connector, completing the installation of the plugging material, closing the negative pressure source at the moment to complete the disassembly of the adsorption tube, and taking out the adsorption tube;
compared with the prior art, firstly, the plugging material 9 is sent into the electric connector with a narrow installation space through the slender adsorption tube, and compared with the traditional clamp, the caliber of the adsorption tube is smaller, so that interference or scratch with an installed cable can be effectively avoided, and the cable is protected;
secondly, the application fixes the blocking object on the adsorption pipe by forming negative pressure in the adsorption pipe, on one hand, the fixing mode does not need to add any additional fixing part, and the structure of the adsorption pipe can be simplified to the greatest extent on the premise of ensuring the installation stability; on the other hand, the blocking object is fixed in a vacuum negative pressure mode, the stress of the blocking object is uniform, and the stability of the blocking object after installation is good; meanwhile, compared with the traditional clamp clamping mode, the external clamping equipment is not needed, so that the damage of the clamping equipment to the outer surface of the plugging material can be fundamentally avoided, and the plugging quality of the plugging material is improved; meanwhile, as the plugging material is fixed through negative pressure, the negative pressure is mainly controlled by a negative pressure source, and workers can accurately adjust the negative pressure according to the needs, compared with the traditional clamping mode, the negative pressure type plugging material can furthest reduce the requirements on workers.
Finally, the plugging material is installed through the slender adsorption tube, and the negative pressure is combined to fix the plugging material, so that the volume of the installation end of the plugging material can be simplified to the greatest extent by combining the two, and the plugging material can be inserted into any installation station through the adsorption tube; meanwhile, a worker can realize quick installation of the blocking object in a plugging mode, after the negative pressure source is cut off, the blocking object and the adsorption tube are automatically separated, and the adsorption tube is convenient to detach, so that the installation efficiency is high, and meanwhile, the installation difficulty of the blocking object is reduced to the greatest extent.
The foregoing description is only of the preferred embodiments of the present application, and is not intended to limit the scope of the application, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein or in the alternative, which may be employed directly or indirectly in other related arts.
Claims (5)
1. A preformed hole plugging device for a narrow space, which is characterized by comprising an adsorption tube (1);
the negative pressure source (2), the negative pressure source (2) is connected with the adsorption tube (1), one end of the adsorption tube (1) is used for installing a blocking object, the other end of the adsorption tube is communicated with the negative pressure source (2), and the negative pressure source (2) forms negative pressure in the adsorption tube (1) so as to fix the blocking object;
a limiting ring (6) for limiting the insertion depth of the plugging material is arranged on the inner wall of the adsorption tube (1); a plurality of step surfaces (7) are arranged on the outer wall of the adsorption tube (1), and the diameter of each step surface (7) linearly reduces along the direction deviating from the negative pressure source (2);
the plugging device further comprises an adapter (3), one end of the adapter (3) is connected with the adsorption tube (1), and the other end of the adapter is connected with the negative pressure source (2);
the adapter (3) is connected with the adsorption tube (1) through threads, a limiting groove (4) is formed in the other end of the adapter (3), and a quick connector (5) matched with the limiting groove (4) is arranged on the negative pressure source (2);
the minimum through-flow surface diameter of the adsorption tube (1) satisfies the following relationship:wherein P represents the pressure in the adsorption tube and m is the weight of the plugging material.
2. The preformed hole plugging device for narrow spaces according to claim 1, wherein the negative pressure source (2) is a micro-vacuum machine or an air compressor.
3. The preformed hole plugging device for narrow spaces according to claim 1, wherein the distance between the limiting ring (6) and the orifice of the adsorption tube (1) is 1.5-2 times the diameter of the plugging material.
4. A preformed hole plugging device for confined spaces according to claim 1, wherein said adsorption tube (1) is of conical configuration with a small end for securing the plug.
5. The preformed hole plugging device for narrow spaces according to claim 4, wherein a limiting step (8) for limiting the installation depth of the plugging material is further arranged on the outer wall of the adsorption tube (1); the cross section of the limiting step (8) is conical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210546737.8A CN114976814B (en) | 2022-05-19 | 2022-05-19 | Preformed hole plugging device for narrow space |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210546737.8A CN114976814B (en) | 2022-05-19 | 2022-05-19 | Preformed hole plugging device for narrow space |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114976814A CN114976814A (en) | 2022-08-30 |
| CN114976814B true CN114976814B (en) | 2023-11-10 |
Family
ID=82985550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210546737.8A Active CN114976814B (en) | 2022-05-19 | 2022-05-19 | Preformed hole plugging device for narrow space |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114976814B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1190875A (en) * | 1997-09-17 | 1999-04-06 | Shizuo Hikita | Hand carry negative pressure suction implement |
| CN203537705U (en) * | 2013-11-12 | 2014-04-09 | 国家电网公司 | Plugging device |
| CN204766716U (en) * | 2015-04-30 | 2015-11-18 | 天津博众纳德生物科技有限公司 | Set up seal structure's medical aspirator |
| CN205857415U (en) * | 2016-06-20 | 2017-01-04 | 中国建筑第八工程局有限公司 | Preformed hole plugging device |
| CN207651939U (en) * | 2017-12-06 | 2018-07-24 | 中电建建筑集团有限公司 | A kind of negative-pressure adsorption-type pipeline installs system |
| CN209215027U (en) * | 2018-10-31 | 2019-08-06 | 苏州国环环境检测有限公司 | A kind of stationary source negative pressure sampling gun and sampling apparatus |
| CN111297469A (en) * | 2020-03-31 | 2020-06-19 | 常州市久成电子设备有限公司 | Negative pressure adsorption mechanism with rotary inner tube and bipolar electrocoagulator using same |
| CN212794806U (en) * | 2020-07-14 | 2021-03-26 | 红塔烟草(集团)有限责任公司 | Bearing mounting tool suitable for narrow operating space |
| CN213683296U (en) * | 2020-07-21 | 2021-07-13 | 重庆市御临建筑工程有限公司 | Preformed hole plugging device |
| CN113520572A (en) * | 2021-07-09 | 2021-10-22 | 山东华博电气有限公司 | High frequency operation equipment wire adapter |
-
2022
- 2022-05-19 CN CN202210546737.8A patent/CN114976814B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1190875A (en) * | 1997-09-17 | 1999-04-06 | Shizuo Hikita | Hand carry negative pressure suction implement |
| CN203537705U (en) * | 2013-11-12 | 2014-04-09 | 国家电网公司 | Plugging device |
| CN204766716U (en) * | 2015-04-30 | 2015-11-18 | 天津博众纳德生物科技有限公司 | Set up seal structure's medical aspirator |
| CN205857415U (en) * | 2016-06-20 | 2017-01-04 | 中国建筑第八工程局有限公司 | Preformed hole plugging device |
| CN207651939U (en) * | 2017-12-06 | 2018-07-24 | 中电建建筑集团有限公司 | A kind of negative-pressure adsorption-type pipeline installs system |
| CN209215027U (en) * | 2018-10-31 | 2019-08-06 | 苏州国环环境检测有限公司 | A kind of stationary source negative pressure sampling gun and sampling apparatus |
| CN111297469A (en) * | 2020-03-31 | 2020-06-19 | 常州市久成电子设备有限公司 | Negative pressure adsorption mechanism with rotary inner tube and bipolar electrocoagulator using same |
| CN212794806U (en) * | 2020-07-14 | 2021-03-26 | 红塔烟草(集团)有限责任公司 | Bearing mounting tool suitable for narrow operating space |
| CN213683296U (en) * | 2020-07-21 | 2021-07-13 | 重庆市御临建筑工程有限公司 | Preformed hole plugging device |
| CN113520572A (en) * | 2021-07-09 | 2021-10-22 | 山东华博电气有限公司 | High frequency operation equipment wire adapter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114976814A (en) | 2022-08-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103328873A (en) | Pipe connector assembly and method for connecting a pipe using same | |
| CN114976814B (en) | Preformed hole plugging device for narrow space | |
| CN109519629B (en) | Floating fluid connection plug, socket, and connector and cooling system comprising same | |
| CN107768869B (en) | Binding post and photovoltaic module | |
| CN102025063A (en) | Sealed multipurpose radio frequency coaxial adapter/connector | |
| CN114019630B (en) | High pressure-bearing structure for fixing optical cable | |
| CN209929614U (en) | Coaxial connector for cavity filter | |
| CN114784558A (en) | Radio frequency connector with explosion-proof function and design method | |
| CN113067202B (en) | One-time rubber covered army gauge cable connector | |
| CN110630837B (en) | Adapter connector | |
| CN219608310U (en) | Brake air pressure sensor with mounting seat | |
| CN209744653U (en) | Air conditioner and sealing assembly thereof | |
| CN214579822U (en) | Surveying and mapping device | |
| CN112038827B (en) | Argon atmosphere hot chamber is with sealed electric connection device of remote plug operation | |
| CN218887611U (en) | Bending type microminiature radio frequency coaxial connector | |
| CN215770729U (en) | Quick plug-in arrester | |
| CN213840011U (en) | Novel insert integrated form pressure test connector soon | |
| CN110416841A (en) | A kind of coaxial connector for cavity body filter | |
| CN216564474U (en) | Cable joint structure | |
| CN109980433A (en) | Industrial plug socket component | |
| CN216443975U (en) | Suction nozzle device | |
| CN220076307U (en) | Guide bracket for automobile wire harness | |
| CN112993637B (en) | Gas-electricity integrated interface device, mass spectrum system and maintenance method | |
| CN216590468U (en) | Quick-insertion type pneumatic pipe joint | |
| CN213361464U (en) | Double-groove copper snap ring vehicle quick-insertion air pipe joint |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |