CN110052997A - A kind of spring fitting device of new structure bolt - Google Patents
A kind of spring fitting device of new structure bolt Download PDFInfo
- Publication number
- CN110052997A CN110052997A CN201910378802.9A CN201910378802A CN110052997A CN 110052997 A CN110052997 A CN 110052997A CN 201910378802 A CN201910378802 A CN 201910378802A CN 110052997 A CN110052997 A CN 110052997A
- Authority
- CN
- China
- Prior art keywords
- section
- truncated cone
- spring
- shaped section
- guide bar
- 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.)
- Pending
Links
- 238000009434 installation Methods 0.000 claims abstract description 15
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 5
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
-
- 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
- B25B27/30—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 positioning or withdrawing springs, e.g. coil or leaf springs
- B25B27/302—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 positioning or withdrawing springs, e.g. coil or leaf springs coil springs other than torsion coil springs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Springs (AREA)
Abstract
It is axially distributed on the hole wall of the inner via hole to have multiple boss equipped with inner via hole at the guiding set center the present invention provides a kind of spring fitting device of new structure bolt, including guiding set and guide bar；The guide bar includes truncated cone-shaped section, set on truncated cone-shaped section of both ends positioning section and be bolted section, the positioning section is located at the small one end of truncated cone-shaped section of diameter, the section that is bolted is located at the big one end of truncated cone-shaped section of diameter, the truncated cone-shaped section of outer surface edge is axially arranged with multiple grooves, the guide bar is inserted into the inner via hole of guiding set, the boss and groove cooperate, and slide along the groove.A kind of spring fitting device of new structure bolt of the present invention, spring is pushed into the annular groove of bolt body by guiding set, in push-on process, spring bores along the circumferential direction uniform stressed, deformation, the installation of spring and bolt body is set to meet requirement, installation effectiveness is improved, installation cost is reduced.
Description
Technical field
The invention belongs to aerospace engine fastening system engineering test fields, more particularly, to a kind of new structure spiral shell
The spring fitting device of bolt.
Background technique
At present in aerospace field, high-end high-performance fastener is very rare, and it is a kind of special to need in certain special dimensions
The bolt of structure, the bolt one end are equipped with spring, are mainly used for the fixation of part covering on aircraft, compared to existing structure
Bolt, advantage mainly prevents bolt upper snap ring from falling off, twisting is skidded etc., meet the high-precision and high reliability used.
Currently, the existing installation method of spring is using the actuating property of drill chuck head three-jaw, by drill point head
Three-jaw restructuring in portion's is protruded into spring bores and struts and be sent into installation site by the open slot of bolt endface to realize peace
Dress, when strutting, spring is 3 stress, and the position of three-jaw support, the deflection of spring is big, and non-Support Position deformation is small, due to
Stress it is uneven, non-uniform plastic deformation can be generated to a certain extent by strutting rear spring, and spring is caused to strut in three-jaw
Position outer diameter can be bigger than normal in other positions.Further, since the structure does not limit the distracted movement of three-jaw, lead
Deflection after causing spring to strut is uncontrollable, and different spring states has differences after installation.
Summary of the invention
In view of this, the present invention is directed to propose a kind of spring fitting device of new structure bolt, is installed with solving spring
When the deformation problem of non-uniform and uncontrollable problem of deflection.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
A kind of spring fitting device of new structure bolt, including bolt body and spring, the bolt body end are set
There is mounting hole, is radially equipped with annular groove on the installation hole wall, the installation hole wall end opens up multiple gap, institute along axial direction
Spring is stated to be installed at annular groove；It further include guiding set and guide bar, the guiding set is cylinder, guides and is equipped at set center
Inner via hole is evenly distributed with multiple boss along axial direction on the hole wall of the inner via hole；The guide bar includes truncated cone-shaped section, sets
In truncated cone-shaped section of both ends positioning section and be bolted section, the positioning section is located at the small one end of truncated cone-shaped section of diameter, institute
It states and is bolted section and is located at the big one end of truncated cone-shaped section of diameter, and the diameter of the positioning section and truncated cone-shaped section of minimum are straight
Diameter is identical, and the diameter for being bolted section is less than truncated cone-shaped section of maximum gauge, and the truncated cone-shaped section of outer surface is along axis
To multiple grooves are equipped with, the maximum gauge of the guide bar is less than the internal diameter of inner via hole, and guide bar is inserted into the interior logical of guiding set
In hole, the boss and groove cooperate, and slide along the groove；The internal diameter phase of the maximum gauge for being bolted section and mounting hole
Deng, it is described be bolted section insertion mounting hole in, the outer diameter of mounting hole is equal with truncated cone-shaped section of maximum gauge.
Further, the number of the boss and groove is three, and the number of the gap is three, and with groove pair
It answers.
Further, the gap between the boss and groove is 0.05-0.1mm.
Further, the guide bar surface smoothness is greater than Ra1.6.
Further, truncated cone-shaped section of the external conicity is 1:45-1:50.
Compared with the existing technology, the spring fitting device and its application method of a kind of new structure bolt of the present invention
It has the advantage that
A kind of spring fitting device of new structure bolt of the present invention, including guiding set and guide bar, spring peace
At truncated cone-shaped section of guide bar, spring is pushed into the annular groove of bolt body by guiding set, in push-on process, bullet
Spring is gradually softened, spring bores along the circumferential direction uniform stressed, deformation, while the deflection of spring depend on truncated cone-shaped section
Size, can control the deflection of spring by changing truncated cone-shaped section of external conicity, make the peace of spring and bolt body
Sufficient requirement is filled, installation effectiveness is improved, reduces installation cost.
Detailed description of the invention
The attached drawing for constituting a part of the invention is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is a kind of three dimensional structure diagram of the spring fitting device of new structure bolt described in embodiment 1；
Fig. 2 is a kind of guiding nested structure schematic diagram of the spring fitting device of new structure bolt described in embodiment 1；
Fig. 3 is a kind of guide bar structural schematic diagram of the spring fitting device of new structure bolt described in embodiment 1；
Fig. 4 is a kind of bolt arrangement schematic diagram of the spring fitting device of new structure bolt described in embodiment 1；
Fig. 5 is a kind of spring structure schematic diagram of the spring fitting device of new structure bolt described in embodiment 1.
Description of symbols:
1, bolt body；101, annular groove；102, gap；2, spring；3, guiding set；4, inner via hole；5, boss；6, it guides
Bar；7, truncated cone-shaped section；8, positioning section；9, it is bolted section；10, groove.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than instruction or dark
Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair
Limitation of the invention.In addition, term " first ", " second " etc. are used for description purposes only, it is not understood to indicate or imply phase
To importance or implicitly indicate the quantity of indicated technical characteristic.The feature for defining " first ", " second " etc. as a result, can
To explicitly or implicitly include one or more of the features.In the description of the present invention, unless otherwise indicated, " multiple "
It is meant that two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood by concrete condition
Concrete meaning in the present invention.
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
Embodiment 1
A kind of spring fitting device of new structure bolt, including bolt body 1 and spring 2,1 end of bolt body are equipped with
Mounting hole is installed and is radially equipped with annular groove 101 on hole wall, installs hole wall end along axial direction and opens up multiple gap 102, spring 2
It is installed at annular groove 101；
It further include that guiding set 3 and guide bar 6 are equipped with interior as shown in Fig. 2, guiding set 3 is cylinder at 3 centers of guiding set
Through-hole 4, is uniformly distributed along axial direction that there are three boss 5 on the hole wall of inner via hole 4；
As shown in figure 3, guide bar 6 includes truncated cone-shaped section 7, positioning section 8 and the bolt company set on truncated cone-shaped section of 7 both ends
Section 9 is connect, positioning section 8 is located at the small one end of truncated cone-shaped section of 7 diameters, is bolted section 9 and is located at big one of truncated cone-shaped section of 7 diameters
End, and the diameter of positioning section 8 is identical as truncated cone-shaped section 7 of minimum diameter, the diameter for being bolted section 9 is less than truncated cone-shaped section
7 maximum gauge, truncated cone-shaped section 7, positioning section 8 and be bolted section 9 surface smoothness be greater than Ra1.6, surface is smooth, cut
The external conicity for pushing up conical section 7 is 1:45-1:50, and truncated cone-shaped section of 7 outer surfaces edge is axially arranged with multiple grooves 10, guide bar 6
Maximum gauge be less than inner via hole 4 internal diameter, guarantee guide bar 6 be inserted into guiding set 3 inner via hole 4 in, while boss 5 with it is recessed
Slot 10 cooperates, and the gap between boss 5 and groove 10 is 0.05-0.1mm, slides boss 5 along groove 10, guarantees guiding set 3
It is slided along guide bar 6；The depth of groove 10 is gradually deepened along truncated cone-shaped section 7 of axial direction, and close to being bolted 9 one end of section
Groove is most deep, is smoothly connected with section 9 is bolted, and the maximum gauge for being bolted section 9 is equal with the internal diameter of mounting hole, makes bolt
Linkage section 9 is just inserted into mounting hole, and the outer diameter of mounting hole is equal with truncated cone-shaped section 7 of maximum gauge, guarantees that spring 2 can be just
It is good to be slid into bolt body 1 from truncated cone-shaped section 7 of end, and then slide into annular groove 101, complete spring installation.
A kind of application method of the spring fitting device of new structure bolt described in the embodiment of the present invention 1 are as follows:
The spring fitting device of a kind of new structure bolt of the present invention, as shown in Figure 1, in use, first by bullet
Spring 2 is packed into from 8 side of positioning section of guide bar 6, and spring 2 is made to be installed on truncated cone-shaped section 7 outside, by the inner via hole 4 of guiding set 3
It is pushed into guide bar 6 from 8 side of positioning section, the boss 5 on 4 hole wall of inner via hole cooperates with the groove 10 on truncated cone-shaped section 7, makes to lead
Draw set 3 to move along groove 10, push the spring 2 is slided on truncated cone-shaped section 7, and the internal diameter that spring 2 is softened at this time is increasing；
The bolt connection 9 of guide bar 6 is filled in the mounting hole of bolt body 1, the outer diameter of mounting hole and truncated cone-shaped section 7 of maximum
Diameter is equal, meanwhile, gap 102 and groove 10 are corresponded, continues to press on guiding set 3, boss 5 slides into gap along groove 10
In 102, spring 2 is enable just to slide into bolt body 1 from truncated cone-shaped section 7 of end, and then slides into annular groove 101
It is interior, complete spring installation.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (5)
1. a kind of spring fitting device of new structure bolt, including bolt body (1) and spring (2), the bolt body (1)
End is equipped with mounting hole, is radially equipped with annular groove (101) on the installation hole wall, the installation hole wall end is opened up along axial direction
Multiple gap (102), the spring (2) are installed at annular groove (101)；It is characterized by also including guiding set (3) and guide
Bar (6), the guiding set (3) are cylinder, and guiding set is equipped with inner via hole (4) at (3) center, the hole wall of the inner via hole (4)
On along axial direction be evenly distributed with multiple boss (5)；
The guide bar (6) includes truncated cone-shaped section (7), the positioning section (8) for being set to truncated cone-shaped section of (7) both ends and is bolted
Section (9), the positioning section (8) are located at the small one end of truncated cone-shaped section of (7) diameter, and the section (9) that is bolted is located at truncated cone
The big one end of shape section (7) diameter, and the diameter of the positioning section (8) is identical as the minimum diameter of truncated cone-shaped section (7), the spiral shell
The diameter of bolt linkage section (9) is less than the maximum gauge of truncated cone-shaped section (7), and described truncated cone-shaped section of (7) outer surface is set along axial direction
Have multiple grooves (10), the maximum gauge of the guide bar (6) is less than the internal diameter of inner via hole (4), and guide bar (6) is inserted into guiding
In the inner via hole (4) for covering (3), the boss (5) and groove (10) cooperate, and slide along groove (10)；
The maximum gauge for being bolted section (9) is equal with the internal diameter of mounting hole, described to be bolted section (9) insertion mounting hole
Interior, the outer diameter of mounting hole is equal with the maximum gauge of truncated cone-shaped section (7).
2. a kind of spring fitting device of new structure bolt according to claim 1, it is characterised in that: the boss
(5) and the number of groove (10) is three, and the number of the gap (102) is three, and corresponding with groove (10).
3. a kind of spring fitting device of new structure bolt according to claim 2, it is characterised in that: the boss
(5) gap between groove (10) is 0.05-0.1mm.
4. a kind of spring fitting device of new structure bolt according to claim 1, it is characterised in that: the guide bar
(6) surface smoothness is greater than Ra1.6.
5. a kind of spring fitting device of new structure bolt according to claim 4, it is characterised in that: the truncated cone
The external conicity of shape section (7) is 1:45-1:50.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910378802.9A CN110052997A (en) | 2019-05-08 | 2019-05-08 | A kind of spring fitting device of new structure bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910378802.9A CN110052997A (en) | 2019-05-08 | 2019-05-08 | A kind of spring fitting device of new structure bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110052997A true CN110052997A (en) | 2019-07-26 |
Family
ID=67322478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910378802.9A Pending CN110052997A (en) | 2019-05-08 | 2019-05-08 | A kind of spring fitting device of new structure bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110052997A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112008646A (en) * | 2020-08-27 | 2020-12-01 | 清华大学 | Installation guiding tool for built-in control rod drive wire spring box |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05301128A (en) * | 1992-04-27 | 1993-11-16 | Honda Motor Co Ltd | Assembling method for piston ring |
| CN1226633A (en) * | 1998-02-20 | 1999-08-25 | 丰田自动车株式会社 | Piston ring structural body and method of mounting piston ring structural body |
| CN2863370Y (en) * | 2005-12-23 | 2007-01-31 | 上海外高桥造船有限公司 | Sealing element mounting tools |
| CN201889764U (en) * | 2010-11-11 | 2011-07-06 | 无锡明珠增压器制造有限公司 | Guide sleeve and push sleeve for mounting sealing rings |
| CN201989107U (en) * | 2011-04-07 | 2011-09-28 | 柳州豫新汽车空调有限公司 | O-shaped sealing ring rapid assembling tool |
| CN202278534U (en) * | 2011-09-29 | 2012-06-20 | 西安航空动力股份有限公司 | Installing tool for inner-hole spring collars of parts |
| CN202448086U (en) * | 2011-12-31 | 2012-09-26 | 上海麦特密封件有限公司 | Mounting tool for sealing ring |
| CN102729199A (en) * | 2012-07-24 | 2012-10-17 | 宁波绿之源工具有限公司 | Assembly tool for O-shaped sealing ring |
| CN203566622U (en) * | 2013-11-14 | 2014-04-30 | 内蒙古第一机械集团有限公司 | Elastic press-fitting device of seal ring of piston |
| CN107906105A (en) * | 2017-12-14 | 2018-04-13 | 天津成立航空技术有限公司 | A kind of high sealing quick-release bolt for airframe |
| CN207229549U (en) * | 2017-08-17 | 2018-04-13 | 陕西隆翔停车设备集团有限公司 | A kind of Quick Release positioning clamps pin |
| CN108687714A (en) * | 2018-07-19 | 2018-10-23 | 侯马经济开发区日祥科技有限公司 | High-efficient piston ring installation tool |
| CN109014856A (en) * | 2018-09-18 | 2018-12-18 | 杭州力龙液压有限公司 | Plunger ring press-fitting tool |
| CN210148001U (en) * | 2019-05-08 | 2020-03-17 | 成立航空技术有限公司 | Novel spring mounting device for structural bolt |
-
2019
- 2019-05-08 CN CN201910378802.9A patent/CN110052997A/en active Pending
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05301128A (en) * | 1992-04-27 | 1993-11-16 | Honda Motor Co Ltd | Assembling method for piston ring |
| CN1226633A (en) * | 1998-02-20 | 1999-08-25 | 丰田自动车株式会社 | Piston ring structural body and method of mounting piston ring structural body |
| US6283478B1 (en) * | 1998-02-20 | 2001-09-04 | Toyota Jidosha Kabushiki Kaisha | Piston ring structural body and method of mounting the piston ring structural body |
| CN2863370Y (en) * | 2005-12-23 | 2007-01-31 | 上海外高桥造船有限公司 | Sealing element mounting tools |
| CN201889764U (en) * | 2010-11-11 | 2011-07-06 | 无锡明珠增压器制造有限公司 | Guide sleeve and push sleeve for mounting sealing rings |
| CN201989107U (en) * | 2011-04-07 | 2011-09-28 | 柳州豫新汽车空调有限公司 | O-shaped sealing ring rapid assembling tool |
| CN202278534U (en) * | 2011-09-29 | 2012-06-20 | 西安航空动力股份有限公司 | Installing tool for inner-hole spring collars of parts |
| CN202448086U (en) * | 2011-12-31 | 2012-09-26 | 上海麦特密封件有限公司 | Mounting tool for sealing ring |
| CN102729199A (en) * | 2012-07-24 | 2012-10-17 | 宁波绿之源工具有限公司 | Assembly tool for O-shaped sealing ring |
| CN203566622U (en) * | 2013-11-14 | 2014-04-30 | 内蒙古第一机械集团有限公司 | Elastic press-fitting device of seal ring of piston |
| CN207229549U (en) * | 2017-08-17 | 2018-04-13 | 陕西隆翔停车设备集团有限公司 | A kind of Quick Release positioning clamps pin |
| CN107906105A (en) * | 2017-12-14 | 2018-04-13 | 天津成立航空技术有限公司 | A kind of high sealing quick-release bolt for airframe |
| CN108687714A (en) * | 2018-07-19 | 2018-10-23 | 侯马经济开发区日祥科技有限公司 | High-efficient piston ring installation tool |
| CN109014856A (en) * | 2018-09-18 | 2018-12-18 | 杭州力龙液压有限公司 | Plunger ring press-fitting tool |
| CN210148001U (en) * | 2019-05-08 | 2020-03-17 | 成立航空技术有限公司 | Novel spring mounting device for structural bolt |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112008646A (en) * | 2020-08-27 | 2020-12-01 | 清华大学 | Installation guiding tool for built-in control rod drive wire spring box |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7651421B2 (en) | Arrow insert apparatus | |
| EP4296547A1 (en) | Electric valve | |
| CN110052997A (en) | A kind of spring fitting device of new structure bolt | |
| CN105179397A (en) | Clamping table type connecting piece | |
| CN109454253A (en) | Gear ring cylindrical turning fixture | |
| CN209206500U (en) | Gear ring cylindrical turning fixture | |
| KR940003793B1 (en) | Reusable locking tube in a reconstitutable fuel assembly | |
| CN105470682A (en) | Jack and electric connector using same | |
| KR870006588A (en) | Latching device for releasably attaching long members to the upper nozzle of the fuel assembly | |
| CN202522733U (en) | Optical fiber connector device | |
| CN210148001U (en) | Novel spring mounting device for structural bolt | |
| CN202726550U (en) | Positioning clamp | |
| CN104176122B (en) | A kind of automobile pull rod always becomes | |
| US9169919B2 (en) | Assembly of knob and lever | |
| EP3080465A1 (en) | Ball joint connector | |
| CN208662241U (en) | A kind of bushing crimp tooling | |
| CN214370191U (en) | Furnace end and nozzle connecting structure and gas stove | |
| CN203103631U (en) | Multi-core connector | |
| CN208825767U (en) | A kind of extension rod for deep thread screw tap | |
| CN207051537U (en) | A kind of device of mining replaceable Optical fiber plug porcelain tube | |
| CN221720716U (en) | Stress rod tail rod fixing device and polarization maintaining fiber | |
| CN207018415U (en) | A kind of bolster easy to install, buffer gear and damper | |
| CN205806179U (en) | A kind of plate nut mounting structure | |
| CN114033827B (en) | Positioning guide device and large-cylinder-diameter double-cylinder shock absorber | |
| CN105626731A (en) | Disengaging spring suitable for small installation space |
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 | ||
| CB02 | Change of applicant information |
Address after: Room 2-103, Warner Jinghu Garden, Dongli District, Tianjin Applicant after: Establishment of Aviation Co., Ltd Address before: Room 2-103, Warner Jinghu Garden, Dongli District, Tianjin Applicant before: CHENGLI AVIATION TECHNOLOGY Co.,Ltd. |
|
| CB02 | Change of applicant information |