CN113457374B - Spiral ring pre-tightening structure for helicopter molecular sieve bed component - Google Patents
Spiral ring pre-tightening structure for helicopter molecular sieve bed component Download PDFInfo
- Publication number
- CN113457374B CN113457374B CN202111032271.1A CN202111032271A CN113457374B CN 113457374 B CN113457374 B CN 113457374B CN 202111032271 A CN202111032271 A CN 202111032271A CN 113457374 B CN113457374 B CN 113457374B
- Authority
- CN
- China
- Prior art keywords
- sieve bed
- spiral ring
- main body
- molecular sieve
- tool main
- 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
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/047—Pressure swing adsorption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B13/00—Oxygen; Ozone; Oxides or hydroxides in general
- C01B13/02—Preparation of oxygen
- C01B13/0229—Purification or separation processes
- C01B13/0248—Physical processing only
- C01B13/0259—Physical processing only by adsorption on solids
Abstract
The invention discloses a spiral ring pre-tightening structure for a molecular sieve bed assembly of a helicopter, which comprises a sieve bed cover plate, a spiral ring and a tool main body, wherein the sieve bed cover plate is arranged on a sieve bed, and the sieve bed cover plate is fixed after the spiral ring is in threaded connection with the sieve bed; wherein, be provided with the ladder mounting groove on the sieve bed, be provided with the internal thread on the ladder mounting groove, be provided with the external screw thread on the spiro, sieve bed apron is arranged in on the ladder face on the ladder mounting groove, the spiro union is in the ladder mounting groove through internal thread and external screw thread. In actual use, the invention has the advantages of high strength and uniform stress, can realize accurate control of the pre-tightening force of the spiral ring, has more accurate torque application, and can prevent the situation that the spiral ring fails because the thread of the spiral ring is damaged due to overlarge torque; the assembling device is more convenient and fast in actual use, the assembling efficiency is improved, meanwhile, the accurate installation of the spiral ring is realized, the accurate control of the pretightening force and the loosening force of the spiral ring is realized, and the normal work of the molecular sieve bed component is ensured.
Description
Technical Field
The invention relates to the technical field of oxygen production equipment, in particular to a spiral ring pre-tightening structure for a helicopter molecular sieve bed component.
Background
Although the pressure swing adsorption oxygen generation technology is adopted in the aspects of medical oxygen generation and household oxygen generation at present, the oxygen generation function and principle can meet the requirement of oxygen consumption, but many performances of the molecular sieve oxygen generation system can not meet the relevant requirements of environmental tests and reliability tests on airborne products (such as a helicopter recorded molecular sieve oxygen generation system) in the national military standard.
The structural design of the molecular sieve bed has a great influence on the performance, and the prior art only makes a simple reaction volume according to the filling volume of the molecular sieve, and does not consider the movement of the molecular sieve along with high-pressure airflow during high-pressure adsorption, the return of the molecular sieve during normal-pressure resolution and the collision and abrasion among molecular sieve particles. Moreover, the weight of the molecular sieve is larger and is more than one time of the weight of the whole molecular sieve bed, the movement of the molecular sieve can cause the whole molecular sieve oxygen production system to vibrate, the mutual collision and abrasion among the molecular sieve particles can cause the particle size of the particles to be smaller and smaller, when the particle size of the particles is smaller than the aperture of the filter screen, the particles can be brought into a finished product oxygen airflow channel by flowing airflow, so that airborne personnel can inhale the particles, great physical injury is caused, the molecular sieve dust mixed into the finished product oxygen can also reduce the concentration of the finished product oxygen, the oxygen production effect is influenced, the service life of the oxygen generator is reduced due to the continuous reduction of the molecular sieve, and huge economic loss is also brought.
At present, no system for generating oxygen and supplying oxygen by using a power supply of a helicopter is installed on the helicopter in China, and the helicopter of an individual model adopts two oxygen supply modes such as a high-pressure oxygen cylinder and the like, so that the problems of heavy weight, large volume and high-pressure danger exist. In addition, the defects of oxygen supply by using the oxygen cylinder are prominent under the influence and restriction of the regular pressure detection of the oxygen cylinder, the oxygen filling after use, the shortage of special oxygen production and oxygenation equipment in remote areas and the like. Through investigation and comparison, technologies such as molecular sieve oxygen generation and the like are introduced to the helicopter, the equipment composition is optimized according to the design requirement of sexuality, an oxygen generation and supply system for the helicopter is designed, and oxygen is safely and reliably supplied to transported personnel and helicopter flight personnel; however, it is very inconvenient for the worker to assemble the molecular sieve bed assembly on board the helicopter.
Disclosure of Invention
The invention aims to provide a spiral pre-tightening structure for a molecular sieve bed component of a helicopter, which has the advantages of convenience in use and assembly in practical use.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a spiral ring pre-tightening structure for a molecular sieve bed assembly of a helicopter comprises a sieve bed cover plate, a spiral ring and a tool main body, wherein the sieve bed cover plate is used for being installed on a sieve bed, and the sieve bed cover plate is fixed after the spiral ring is in threaded connection with the sieve bed;
the sieve bed is provided with a step mounting groove, the step mounting groove is provided with an internal thread, the spiral ring is provided with an external thread, the sieve bed cover plate is arranged on a step surface on the step mounting groove, and the spiral ring is in threaded connection with the external thread in the step mounting groove through the internal thread;
at least two pin holes are uniformly distributed on the upper surface of the spiral ring, pins are arranged on the tool main body at positions corresponding to the pin holes, and the pins and the pin holes can be matched with each other.
In one embodiment of the disclosure, the tool main body comprises a connecting ring and a connecting handle, the pin is arranged on the connecting ring, and the connecting handle is fixedly arranged at the upper end of the connecting ring.
In one embodiment of the disclosure, the connection handle and the connection ring are of a one-piece construction.
In one embodiment of the invention, the connecting handle and the connecting ring are fixedly connected together by welding.
In one embodiment of the present disclosure, the connection handle and the connection ring are integrally formed through a casting process.
In one embodiment disclosed by the invention, the tool main body is provided with a mounting hole, and the pin is mounted in the mounting hole in an interference fit manner.
In one embodiment of the invention, the pin and the tool body are treated by a heat treatment process.
Compared with the prior art, the invention has the following beneficial effects:
the invention mainly comprises a sieve bed cover plate, a spiral ring and a tool main body, when the sealing is carried out, only the sieve bed cover plate needs to be directly placed on the step surface of a step mounting groove, then the spiral ring is screwed into the step mounting groove, and then the spiral ring is screwed by using the special tool main body, namely: aligning the pin on the tool main body with the pin hole on the spiral ring to enable the pin to be matched with the pin hole, and at the moment, only the tool main body needs to be rotated to realize the installation of the spiral ring; the installation is more convenient, and the assembly efficiency can be effectively improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic view of a half-section structure of the present invention.
Fig. 2 is a top view of the present invention.
FIG. 3 is an enlarged view of a portion of FIG. 1 according to the present invention.
Reference numerals:
101-sieve bed cover plate, 102-spiral ring, 103-tool main body, 104-sieve bed, 105-step installation groove, 106-step surface, 107-pin, 108-connection ring, 109-connection handle and 110-interface groove.
Detailed Description
In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the embodiments of the invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.
In the description of the embodiments of the present invention, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only used for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the embodiments of the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.
In embodiments of the invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise the first and second features being in direct contact, or the first and second features being in contact, not directly, but via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.
The following disclosure provides many different embodiments or examples for implementing different configurations of embodiments of the invention. To simplify the disclosure of embodiments of the invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit embodiments of the invention. Furthermore, embodiments of the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Example one
Referring to the attached drawings 1-3 in the specification, the embodiment discloses a spiral ring pre-tightening structure for a molecular sieve bed assembly of a helicopter, which comprises a sieve bed cover plate 101, a spiral ring 102 and a tool main body 103, wherein the sieve bed cover plate 101 is used for being installed on a sieve bed 104, and the spiral ring 102 is screwed with the sieve bed 104 to fix the sieve bed cover plate 101;
wherein, a step mounting groove 105 is arranged on the sieve bed 104, an internal thread is arranged on the step mounting groove 105, an external thread is arranged on the spiral ring 102, the sieve bed cover plate 101 is arranged on a step surface 106 on the step mounting groove 105, and the spiral ring 102 is screwed in the step mounting groove 105 through the internal thread and the external thread;
at least two pin holes are uniformly distributed on the upper surface of the spiral ring 102, pins 107 are arranged on the tool main body 103 at positions corresponding to the pin holes, and the pins 107 can be matched with the pin holes.
The present embodiment is to be composed of a sieve bed cover plate 101, a spiral ring 102 and a tool main body 103, when sealing, only the sieve bed cover plate 101 needs to be directly placed on a step surface 106 of a step installation groove 105, then the spiral ring 102 is screwed into the step installation groove 105, and then the special tool main body 103 is used to realize screwing of the spiral ring 102, that is: aligning a pin 107 on the tool main body 103 with a pin hole on the spiral ring 102, so that the pin 107 is matched with the pin hole, and at the moment, the spiral ring 102 can be installed only by rotating the tool main body 103; the installation is more convenient, and the assembly efficiency can be effectively improved.
Example two
The embodiment is further optimized on the basis of the first embodiment, in the embodiment, the tool main body 103 includes a connecting ring 108 and a connecting handle 109, the pin 107 is arranged on the connecting ring 108, and the connecting handle 109 is fixedly arranged at the upper end of the connecting ring 108; the connecting handle 109 can form a twisting structure, so that the connecting ring 108 can be conveniently rotated, and the operation is more convenient.
EXAMPLE III
The present embodiment is further optimized based on the second embodiment, in the present embodiment, the connection handle 109 and the connection ring 108 are an integral structure.
In some embodiments, the connection handle 109 and the connection ring 108 are fixedly connected together by welding.
In some embodiments, the connection handle 109 and the connection ring 108 are integrally formed by a casting process.
In some embodiments, the tool main body 103 is provided with a mounting hole, and the pin 107 is mounted in the mounting hole in an interference fit manner; therefore, in actual use, the pin 107 and the connecting ring 108 are integrated in an interference mode, integrity of the tool main body 103 can be guaranteed, and replacement of the damaged pin 107 is facilitated.
In some embodiments, the pin 107 and the tool body 103 are treated using a heat treatment process, such as annealing, tempering, etc., to relieve stress on the pin 107 and the tool body 103.
The spiral ring 102 is a key part of a molecular sieve bed component; the stability of the pressing force of the molecular sieve is related, and the oxygen generation efficiency of the molecular sieve bed component is further influenced; furthermore, if the screw pre-tightening force of the spiral ring 102 fails, the molecular sieve will fall out of the sieve bed 104, so that the molecular sieve bed component completely loses the oxygen generation function; therefore, in some embodiments, an interface slot 110 is arranged on the connecting handle 109 of the tool main body 103, and the central position of the interface slot 110 is collinear with the axis of the connecting ring 108 of the tool main body 103; the interface slot 110 is connected with a torque measuring wrench.
Therefore, in actual use, the pre-tightening torque of the threads of the spiral ring 102 can be strictly and accurately controlled through the tool main body 103, the anti-loosening effect of the threads of the spiral ring 102 is improved, the loosening phenomenon of the spiral ring 102 is avoided, and the stable pressing force of the molecular sieve is kept; meanwhile, damage to the spiral ring 102 and the sieve bed 104 caused by damage to the spiral ring 102 due to overlarge pre-tightening torque is avoided.
When the torque measuring wrench rotates clockwise, the tool main body 103 is driven to rotate clockwise through the interface slot 110, and the tool main body 103 pre-fastens the threads of the spiral ring 102 clockwise through the pin 107;
when the torque measuring wrench rotates anticlockwise, the interface slot 110 drives the tool main body 103 to rotate anticlockwise, and the tool main body 103 loosens the threads of the spiral ring 102 anticlockwise through the pin 107;
in order to ensure the accuracy of torque force measurement, the torque measuring wrench can accurately measure the thread pre-tightening force and the thread loosening force of the spiral ring 102.
During measurement, the lower end face of the connecting ring 108 in the tool main body 103 is attached to the upper end face of the spiral ring 102, so that the tool main body 103 is in a horizontal position during measurement; for the purpose of reducing the weight of a product, the structural size of the spiral ring 102 is small, and the mounting hole (the stepped mounting groove 105) is also small, so that the pin 107 is small in diameter, large in section stress and extremely easy to damage; the pins 107 are therefore made of high strength structural steel, such as Q345; in addition, the tool main body 103 and the pin 107 are subjected to special heat treatment processes, such as annealing or tempering, so that the high yield strength of the tool main body 103 is ensured, the reliability of the whole tool is improved, and the influence of the deformation of the whole tool on measurement is reduced.
In actual use, the invention has the advantages of high strength and uniform stress, can realize accurate control of the pre-tightening force of the spiral ring 102, has more accurate torque application, and can prevent the situation that the screw thread of the spiral ring 102 is damaged due to overlarge torque to cause the failure of the spiral ring 102; the molecular sieve bed component is more convenient and fast in actual use, the assembly efficiency is improved, meanwhile, the spiral ring 102 is accurately installed, the pretightening force and the loosening force of the spiral ring 102 are accurately controlled, and the normal work of the molecular sieve bed component is guaranteed.
Preferred embodiments of the present invention, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, it should be noted that any modifications, equivalents and improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (6)
1. A spiro pretension structure for helicopter molecular sieve bed components, characterized in that: the spiral ring is in threaded connection with the sieve bed, and then the sieve bed cover plate is fixed;
the sieve bed is provided with a step mounting groove, the step mounting groove is provided with an internal thread, the spiral ring is provided with an external thread, the sieve bed cover plate is arranged on a step surface on the step mounting groove, and the spiral ring is in threaded connection with the external thread in the step mounting groove through the internal thread;
at least two pin holes are uniformly distributed on the upper surface of the spiral ring, pins are arranged on the tool main body at positions corresponding to the pin holes, and the pins and the pin holes can be matched with each other; the tool main body comprises a connecting ring and a connecting handle, the pin is arranged on the connecting ring, and the connecting handle is fixedly arranged at the upper end of the connecting ring; an interface groove is formed in a connecting handle of the tool main body, and the center of the interface groove is collinear with the axis of a connecting ring of the tool main body; the interface slot is connected with a torque measuring wrench;
during measurement, the lower end face of the connecting ring in the tool main body is attached to the upper end face of the spiral ring, so that the tool main body is in a horizontal position during measurement.
2. The helicoidal pretensioning structure for a helicopter molecular sieve bed assembly according to claim 1, characterized by: the connecting handle and the connecting ring are of an integrated structure.
3. The helicoidal pretensioning structure for a helicopter molecular sieve bed assembly according to claim 2, characterized by: the connecting handle and the connecting ring are fixedly connected together in a welding mode.
4. The helicoidal pretensioning structure for a helicopter molecular sieve bed assembly according to claim 2, characterized by: the connecting handle and the connecting ring are integrally formed through a casting process.
5. The helicoidal pretensioning structure for a helicopter molecular sieve bed assembly according to claim 1, characterized by: the tool main body is provided with a mounting hole, and the pin is mounted in the mounting hole in an interference fit mode.
6. The helicoidal pretensioning structure for a helicopter molecular sieve bed assembly according to claim 1, characterized by: the pin and the tool main body are processed by adopting a heat treatment process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111032271.1A CN113457374B (en) | 2021-09-03 | 2021-09-03 | Spiral ring pre-tightening structure for helicopter molecular sieve bed component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111032271.1A CN113457374B (en) | 2021-09-03 | 2021-09-03 | Spiral ring pre-tightening structure for helicopter molecular sieve bed component |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113457374A CN113457374A (en) | 2021-10-01 |
| CN113457374B true CN113457374B (en) | 2021-12-24 |
Family
ID=77867299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111032271.1A Active CN113457374B (en) | 2021-09-03 | 2021-09-03 | Spiral ring pre-tightening structure for helicopter molecular sieve bed component |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113457374B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1059020A (en) * | 1990-08-13 | 1992-02-26 | 黄秉谊 | The bonding apparatus of pipe and joint |
| CN201959702U (en) * | 2010-12-30 | 2011-09-07 | 沈阳昌泰医疗科技有限公司 | Medical oxygen-generator absorption tower |
| CN103721491A (en) * | 2013-12-13 | 2014-04-16 | 合肥江航飞机装备有限公司 | Necking device for molecular sieve bed end cover |
| CN204771862U (en) * | 2015-04-08 | 2015-11-18 | 林继文 | Grind cutter basil of machine and inspect structure |
| CN204819366U (en) * | 2015-07-17 | 2015-12-02 | 中国人民解放军军械工程学院 | Terminal -guided shell control cabinet is connected volution and is unloaded instrument soon |
| CN205461648U (en) * | 2016-01-27 | 2016-08-17 | 成都康拓兴业科技有限责任公司 | Molecular sieve sifting bed that onboard oxygen generation device was used |
| CN206793329U (en) * | 2017-04-21 | 2017-12-26 | 合肥江航飞机装备有限公司 | A kind of molecular sieve bed port locking mechanism |
| CN211648318U (en) * | 2020-03-24 | 2020-10-09 | 重庆市铁越机械配件制造有限公司 | Cylinder head cover convenient to disassemble |
| CN212706428U (en) * | 2020-08-21 | 2021-03-16 | 石家庄雄楚科技有限公司 | Clamping device capable of continuously reducing diameter |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4479666A (en) * | 1979-12-07 | 1984-10-30 | Welsh James W | Load-line fastener |
| CN2314140Y (en) * | 1997-12-24 | 1999-04-14 | 黄新财 | Twin-nut locking structure |
| US7634844B2 (en) * | 2006-04-19 | 2009-12-22 | Newfrey Llc | Adjustable prewinder assembly for wire insert installation tool |
| DE102011108624A1 (en) * | 2011-07-27 | 2013-01-31 | Thomas Hausmann | Connecting device for temporarily connecting two preferably plate-like parts and needle for such a connecting device |
| CN206409497U (en) * | 2016-12-06 | 2017-08-15 | 上海航天设备制造总厂 | A kind of insert studs device |
| CN207448367U (en) * | 2017-05-31 | 2018-06-05 | 中国电子科技集团公司第十四研究所 | A kind of new type bolt swivel nut installation tool |
| CN108214398A (en) * | 2018-02-05 | 2018-06-29 | 南京海传燕兰轨道交通科技有限公司 | A kind of installation and adjustment tool |
| CN210774731U (en) * | 2019-09-12 | 2020-06-16 | 一汽奔腾轿车有限公司 | Steering parameter tester installation fixing device |
-
2021
- 2021-09-03 CN CN202111032271.1A patent/CN113457374B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1059020A (en) * | 1990-08-13 | 1992-02-26 | 黄秉谊 | The bonding apparatus of pipe and joint |
| CN201959702U (en) * | 2010-12-30 | 2011-09-07 | 沈阳昌泰医疗科技有限公司 | Medical oxygen-generator absorption tower |
| CN103721491A (en) * | 2013-12-13 | 2014-04-16 | 合肥江航飞机装备有限公司 | Necking device for molecular sieve bed end cover |
| CN204771862U (en) * | 2015-04-08 | 2015-11-18 | 林继文 | Grind cutter basil of machine and inspect structure |
| CN204819366U (en) * | 2015-07-17 | 2015-12-02 | 中国人民解放军军械工程学院 | Terminal -guided shell control cabinet is connected volution and is unloaded instrument soon |
| CN205461648U (en) * | 2016-01-27 | 2016-08-17 | 成都康拓兴业科技有限责任公司 | Molecular sieve sifting bed that onboard oxygen generation device was used |
| CN206793329U (en) * | 2017-04-21 | 2017-12-26 | 合肥江航飞机装备有限公司 | A kind of molecular sieve bed port locking mechanism |
| CN211648318U (en) * | 2020-03-24 | 2020-10-09 | 重庆市铁越机械配件制造有限公司 | Cylinder head cover convenient to disassemble |
| CN212706428U (en) * | 2020-08-21 | 2021-03-16 | 石家庄雄楚科技有限公司 | Clamping device capable of continuously reducing diameter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113457374A (en) | 2021-10-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104655379B (en) | A kind of device for being used to test threaded fastener anti-loosening property | |
| CN208188051U (en) | A kind of fixed bracket of rail status monitoring sensor | |
| CN204679270U (en) | The loosening test device that under a kind of lateral load, bolt group connects | |
| CN113457374B (en) | Spiral ring pre-tightening structure for helicopter molecular sieve bed component | |
| CN206998316U (en) | A kind of gantry for diesel engine cylinder head processing is vertical to add fixture | |
| CN109781398A (en) | A kind of screw connection anti-loose test measurement device and method | |
| CN110541735A (en) | Rotor fixing device for transporting whole steam turbine | |
| CN106958578B (en) | Anti-theft screw cap | |
| CN209687862U (en) | A kind of fast locking device of double thread | |
| CN210789331U (en) | Punching equipment for crank arm production | |
| CN207261438U (en) | A kind of check bolt | |
| CN211422720U (en) | Rotor fixing device for transporting whole steam turbine | |
| CN110052859A (en) | A kind of compressor housing tooling | |
| CN106884847B (en) | The embedded removable fixing structure of engine of one kind and its assembly or disassembly method | |
| CN206088792U (en) | Large -scale equipment belt double -screw bolt crowd flange passes through guiding orientation of bolt hole group device | |
| CN205852712U (en) | Diesel injection pump apparatus for examination and repair | |
| CN104439817A (en) | Machining locating device for LED light-emitting plates | |
| CN211775426U (en) | Height adjusting device for rotary floor | |
| CN109869385A (en) | A kind of fast locking device of double thread | |
| CN215567187U (en) | Anti-loose bolt and nut for electric power tower | |
| CN208953199U (en) | Torque calibration tool | |
| CN206982543U (en) | Production wellhead flange and clamp bolt extracting tool | |
| CN206524736U (en) | A kind of instrument for nuclear power plant reactor cooling medium pump motor jiggering | |
| CN220139312U (en) | Motor mounting structure | |
| CN213775981U (en) | Anti-loosening elastic fastening bolt |
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 |