CN106679976B - A kind of shimmy displacement load testing machine of tail-rotor spring bearing - Google Patents
A kind of shimmy displacement load testing machine of tail-rotor spring bearing Download PDFInfo
- Publication number
- CN106679976B CN106679976B CN201611068405.4A CN201611068405A CN106679976B CN 106679976 B CN106679976 B CN 106679976B CN 201611068405 A CN201611068405 A CN 201611068405A CN 106679976 B CN106679976 B CN 106679976B
- Authority
- CN
- China
- Prior art keywords
- bearing
- outer frame
- shimmy
- seat
- rack seat
- 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
- 238000006073 displacement reaction Methods 0.000 title claims abstract description 42
- 238000012360 testing method Methods 0.000 title claims abstract description 33
- 238000005096 rolling process Methods 0.000 claims abstract description 22
- 230000002457 bidirectional effect Effects 0.000 claims description 14
- 238000009434 installation Methods 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 3
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims 2
- 239000000243 solution Substances 0.000 description 6
- 238000009661 fatigue test Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/04—Bearings
- G01M13/045—Acoustic or vibration analysis
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a kind of shimmy displacement load testing machines of tail-rotor spring bearing.The shimmy displacement load testing machine of tail-rotor spring bearing includes: rack comprising two are separated by the First stand and the second rack seat of setting；Outline border is connected, is arranged between First stand and the second rack seat, connection outline border is connect by needle bearing with First stand and the second rack seat；Rear bearing outer frame members are arranged in side or second rack seat side far from First stand of the First stand far from the second rack seat and are connected with outline border is connect by double-direction thrust ball bearing；Rolling loading device, rolling loading device have a rolling loading end, and rolling loading end is connected with outline border is connect；Shimmy loading device, has a shimmy loading end, and shimmy loading end is connect with rear bearing outer frame members.The shimmy displacement load testing machine of tail-rotor spring bearing of the invention realizes the shimmy displacement load of helicopter tail rotor spring bearing.
Description
Technical Field
The invention relates to the technical field of fatigue tests of helicopter tail rotor support bearings, in particular to a tail rotor support bearing shimmy displacement loading test device.
Background
The tail rotor support bearing is an important part of the tail rotor blade and is used for bearing the flapping angular displacement from the flexible beam and the variable-pitch angular displacement and the shimmy linear displacement transmitted to the tail rotor blade oversleeve outer frame. In order to master the fatigue performance of the tail rotor support bearing, the fatigue test of the tail rotor support bearing needs to be carried out on the ground, the fatigue characteristic of the tail rotor support bearing is mastered, and the service life of the tail rotor support bearing is further provided.
At present, the fatigue test device for the tail rotor support bearing in China can only carry out variable pitch angle motion and flapping angle motion, and cannot carry out shimmy displacement loading at the same time.
Accordingly, a technical solution is desired to overcome or at least alleviate at least one of the above-mentioned drawbacks of the prior art.
Disclosure of Invention
The present invention aims to provide a tail rotor support bearing shimmy displacement loading test device which overcomes or at least alleviates at least one of the above-mentioned disadvantages of the prior art.
In order to achieve the above object, the present invention provides a shimmy displacement loading test device for a tail rotor support bearing, comprising: the rack comprises a first rack seat and a second rack seat which are arranged at intervals; the connecting outer frame is arranged between the first rack seat and the second rack seat and is connected with the first rack seat and the second rack seat through needle bearings; the rear bearing outer frame assembly is arranged on one side of the first rack seat far away from the second rack seat or one side of the second rack seat far away from the first rack seat and is connected with the connecting outer frame through a bidirectional thrust ball bearing; the rolling loading device is provided with a rolling loading end, and the rolling loading end is connected with the connecting outer frame; the shimmy loading device is provided with a shimmy loading end, and the shimmy loading end is connected with the rear bearing outer frame assembly; the connecting outer frame is used for mounting a tail rotor supporting bearing; the rolling loading device is used for providing a rolling force for the connecting outer frame so as to roll the connecting outer frame; the shimmy loading device is used for providing a reciprocating force along the axial direction of the connecting outer frame for the connecting outer frame, so that the connecting outer frame moves in the direction.
Preferably, the connection outer frame comprises a first support rod, a tail rotor support bearing installation frame and a second support rod, one end of the first support rod is connected with one side of the tail rotor support bearing installation frame, and the other end of the first support rod penetrates through the first rack seat and is connected with the first rack seat through a first needle bearing; one end of the second support rod is connected with the other side, opposite to the side connected with the first support rod, of the tail rotor support bearing mounting frame, and the other end of the second support rod penetrates through the second rack seat and is connected with the second rack seat through a second needle bearing; the rear bearing outer frame assembly is connected with a part of a second support rod of the connecting outer frame, which penetrates through the second stand seat, through a bidirectional thrust ball bearing; the rolling loading end is connected with the part of the first support rod penetrating through the first platform frame seat; and the shimmy loading end is connected with the rear bearing outer frame assembly.
Preferably, a needle bearing seat is arranged in the first rack seat and used for accommodating the needle bearing; and a needle bearing seat is arranged in the second rack seat and used for accommodating the needle bearing.
Preferably, the rear bearing housing assembly includes: the bidirectional thrust ball bearing is arranged in the through hole of the first bearing outer frame; the second bearing outer frame is provided with an opening part, the second bearing outer frame is in bolt connection with the first bearing outer frame, and the opening part is used for abutting against the second supporting rod and is connected with the second supporting rod through a tightening nut.
Preferably, the rear bearing outer frame assembly further comprises a front baffle ring, and the front baffle ring is sleeved on the second support rod and is abutted against the front bearing outer frame.
Preferably, the rear bearing outer frame assembly further comprises a rear baffle ring, and the rear baffle ring is sleeved on the second bearing outer frame.
Preferably, the bidirectional thrust ball bearing is provided with an oil injection hole.
Preferably, an oil filling hole is formed in the first rack seat and communicated with the needle bearing outer ring arranged on the first rack seat; and an oil filling hole is formed in the second rack seat and communicated with the needle bearing outer ring arranged on the second rack seat.
Preferably, the tail rotor support bearing shimmy displacement loading test device further comprises two needle bearing end covers, wherein one needle bearing end cover is arranged on one side of the first rack seat and connected with the needle bearing arranged on the first rack seat; and the other is arranged at one side of the second stage base and connected with the needle roller bearing arranged on the second stage base.
Preferably, the gantry further comprises a support platform on which the first and second gantry mounts are disposed.
The shimmy displacement loading test device for the tail rotor support bearing realizes shimmy displacement loading of the tail rotor support bearing of the helicopter. The tail rotor support bearing shimmy displacement loading test device can realize the loading of shimmy linear displacement when not influencing the loading of waving angular displacement, and has higher experimental precision and work efficiency.
Drawings
Fig. 1 is a schematic structural diagram of a shimmy displacement loading test device for a tail rotor support bearing according to a first embodiment of the invention.
Reference numerals:
| 1 | rack | 22 | Tail rotor support bearing mounting frame |
| 11 | First rack seat | 23 | Second support rod |
| 12 | Second rack seat | 5 | Needle roller bearing |
| 2 | Connecting outer frame | 31 | First bearing outer frame |
| 3 | Rear bearing outer frame assembly | 32 | Second bearing outer frame |
| 4 | Bidirectional thrust ball bearing | ||
| 21 | First support rod |
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the accompanying drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are only some, but not all embodiments of the invention. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the scope of the present invention.
Fig. 1 is a schematic structural diagram of a shimmy displacement loading test device for a tail rotor support bearing according to a first embodiment of the invention.
The shimmy displacement loading test device for the tail rotor support bearing shown in fig. 1 comprises a rack 1, a connecting outer frame 2, a rear bearing outer frame component 3, a rolling loading device and a shimmy loading device, wherein the rack 1 comprises a first rack seat 11 and a second rack seat 12 which are arranged at intervals; the connecting outer frame 2 is arranged between the first rack seat 11 and the second rack seat 12, and the connecting outer frame 2 is connected with the first rack seat 11 and the second rack seat 12 through needle bearings; the rear bearing outer frame assembly 3 is arranged on one side of the first rack seat far away from the second rack seat or one side of the second rack seat far away from the first rack seat and is connected with the connecting outer frame 2 through a bidirectional thrust ball bearing 4; the rolling loading device is provided with a rolling loading end which is connected with the connecting outer frame 2; the shimmy loading device is provided with a shimmy loading end which is connected with the rear bearing outer frame component 3; the connecting outer frame is used for mounting a tail rotor supporting bearing; the rolling loading device is used for providing a rolling force for the connecting outer frame so as to roll the connecting outer frame; the shimmy loading device is used for providing a reciprocating force along the axial direction of the connecting outer frame for the connecting outer frame, so that the connecting outer frame moves in the direction.
The shimmy displacement loading test device for the tail rotor support bearing realizes shimmy displacement loading of the tail rotor support bearing of the helicopter. The tail rotor support bearing shimmy displacement loading test device can realize the loading of shimmy linear displacement when not influencing the loading of waving angular displacement, and has higher experimental precision and work efficiency.
Referring to fig. 1, in the present embodiment, the connection outer frame includes a first support rod 21, a tail rotor support bearing installation frame 22 and a second support rod 23, one end of the first support rod 21 is connected to one side of the tail rotor support bearing installation frame 22, and the other end passes through the first stage base 11 and is connected to the first stage base 11 through a needle bearing; one end of the second support rod 23 is connected with the other side of the tail rotor support bearing mounting frame 22 opposite to the side connected with the first support rod 21, and the other end of the second support rod 23 passes through the second stand seat 12 and is connected with the second stand seat 12 through the needle roller bearing 5; the rear bearing outer frame component 3 is connected with the part of the second support rod 23 of the connecting outer frame 2, which penetrates through the second stand seat 12, through a bidirectional thrust ball bearing; the rolling loading end is connected with the part of the first support rod, which penetrates through the first platform frame seat; and the shimmy loading end is connected with the rear bearing outer frame assembly.
Referring to fig. 1, in the present embodiment, a needle bearing seat is disposed in the first carriage seat 11 for accommodating a needle bearing; a needle bearing seat is arranged in the second carriage seat 12 for accommodating a needle bearing.
Referring to fig. 1, in the present embodiment, the rear bearing housing assembly includes a first bearing housing 31 and a second bearing housing 32, the first bearing housing 31 has a through hole, and the bidirectional thrust ball bearing 4 is disposed in the through hole of the first bearing housing; the second bearing outer frame 32 has an opening portion, the second bearing outer frame is connected to the first bearing outer frame by a bolt, and the opening portion is used for abutting against the second support rod and is connected to the second support rod by a nut.
Referring to fig. 1, in the present embodiment, the rear bearing housing assembly further includes a front baffle ring, which is sleeved on the second support rod and abuts against the front bearing housing. The tail rotor support bearing shimmy displacement loading test device that the fender ring can be in before increasing prevents that second bracing piece and front bearing frame from being connected inefficacy when testing.
Referring to fig. 1, in this embodiment, the rear bearing housing assembly further includes a rear baffle ring, and the rear baffle ring is sleeved on the second bearing housing. Increase the tail-rotor support bearing shimmy displacement loading test device that the back fender ring can be in and prevent that second bearing frame and first bearing frame from being connected inefficacy when testing.
In this embodiment, the bidirectional thrust ball bearing is provided with an oil hole (not shown in the figure). The oil injection hole is added to lubricate the bidirectional thrust ball bearing.
In the embodiment, the first rack seat is provided with an oil filling hole, and the oil filling hole is communicated with a needle bearing outer ring arranged on the first rack seat; and an oil filling hole is formed in the second rack seat and communicated with a needle bearing outer ring arranged on the second rack seat. With this structure, the needle roller bearing can be lubricated.
In this embodiment, the shimmy displacement loading test device for the tail rotor support bearing further comprises two needle bearing end covers, wherein one needle bearing end cover is arranged on one side of the first rack seat and connected with a needle bearing arranged on the first rack seat; and the other is arranged on one side of the second platform frame seat and is connected with a needle bearing arranged on the second platform frame seat. The needle bearing end cover is added, so that the needle bearing can be installed more firmly.
In this embodiment, the stage further comprises a support platform, and the first stage seat and the second stage seat are disposed on the support platform
Finally, it should be pointed out that: the above examples are only for illustrating the technical solutions of the present invention, and are not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a tail-rotor support bearing shimmy displacement loading test device which characterized in that, tail-rotor support bearing shimmy displacement loading test device includes:
the rack (1) comprises a first rack seat (11) and a second rack seat (12) which are arranged at intervals;
the connecting outer frame (2) is arranged between the first rack seat (11) and the second rack seat (12), and the connecting outer frame (2) is connected with the first rack seat (11) and the second rack seat (12) through needle bearings;
the rear bearing outer frame assembly (3) is arranged on one side, away from the second rack seat, of the first rack seat or one side, away from the first rack seat, of the second rack seat and is connected with the connecting outer frame (2) through a bidirectional thrust ball bearing (4);
the rolling loading device is provided with a rolling loading end, and the rolling loading end is connected with the connecting outer frame (2);
the shimmy loading device is provided with a shimmy loading end, and the shimmy loading end is connected with the rear bearing outer frame assembly (3); wherein,
the connecting outer frame is used for mounting a tail rotor supporting bearing; the rolling loading device is used for providing a rolling force for the connecting outer frame so as to roll the connecting outer frame; the shimmy loading device is used for providing a reciprocating force along the axial direction of the connecting outer frame for the connecting outer frame, so that the connecting outer frame moves in the direction.
2. The tail rotor support bearing shimmy displacement loading test device of claim 1, characterized in that the connection outer frame comprises a first support rod (21), a tail rotor support bearing installation frame (22) and a second support rod (23), one end of the first support rod (21) is connected with one side of the tail rotor support bearing installation frame (22), and the other end passes through the first rack seat (11) and is connected with the first rack seat (11) through a needle bearing; one end of the second support rod (23) is connected with the other side, opposite to the side connected with the first support rod (21), of the tail rotor support bearing mounting frame (22), and the other end of the second support rod (23) penetrates through the second rack seat (12) and is connected with the second rack seat (12) through a needle roller bearing (5);
the rear bearing outer frame assembly (3) is connected with a part of a second support rod (23) of the connecting outer frame (2) penetrating through the second stand seat (12) through a bidirectional thrust ball bearing;
the rolling loading end is connected with the part of the first support rod penetrating through the first platform frame seat;
and the shimmy loading end is connected with the rear bearing outer frame assembly.
3. The shimmy displacement loading test device of the tail rotor support bearing of claim 2 is characterized in that a needle bearing seat is arranged in the first stand seat (11) and is used for accommodating the needle bearing; and a needle bearing seat is arranged in the second stand seat (12) and is used for accommodating the needle bearing.
4. The shimmy displacement loading test device of tail rotor support bearing of claim 3, characterized in that, the back bearing frame subassembly includes:
the bearing comprises a first bearing outer frame (31), wherein the first bearing outer frame (31) is provided with a through hole, and the bidirectional thrust ball bearing (4) is arranged in the through hole of the first bearing outer frame;
the second bearing outer frame (32), the second bearing outer frame (32) has an opening, the second bearing outer frame with first bearing outer frame bolted connection, the opening is used for leaning on the second bracing piece to through taking the jam nut with the second bracing piece is connected.
5. The shimmy displacement loading test device of the tail rotor support bearing of claim 4, wherein the rear bearing outer frame assembly further comprises a front baffle ring, and the front baffle ring is sleeved on the second support rod and is abutted against the front bearing outer frame.
6. The shimmy displacement loading test device of the tail rotor support bearing of claim 5, wherein the rear bearing outer frame assembly further comprises a rear baffle ring, and the rear baffle ring is sleeved on the second bearing outer frame.
7. The tail rotor support bearing shimmy displacement loading test device of claim 6, wherein the bidirectional thrust ball bearing is provided with an oil hole.
8. The tail rotor support bearing shimmy displacement loading test device of claim 7, wherein the first pedestal base is provided with an oil hole, and the oil hole is communicated with the needle bearing outer ring arranged on the first pedestal base; and an oil filling hole is formed in the second rack seat and communicated with the needle bearing outer ring arranged on the second rack seat.
9. The tail rotor support bearing shimmy displacement loading test apparatus of claim 8, wherein the tail rotor support bearing shimmy displacement loading test apparatus further comprises two needle bearing end caps, one of which is arranged on one side of the first carriage base and is connected with the needle bearing arranged on the first carriage base; and the other is arranged at one side of the second stage base and connected with the needle roller bearing arranged on the second stage base.
10. The tail rotor support bearing shimmy displacement loading test apparatus of claim 9, wherein the stage further comprises a support platform, the first stage mount and the second stage mount being disposed on the support platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611068405.4A CN106679976B (en) | 2016-11-29 | 2016-11-29 | A kind of shimmy displacement load testing machine of tail-rotor spring bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611068405.4A CN106679976B (en) | 2016-11-29 | 2016-11-29 | A kind of shimmy displacement load testing machine of tail-rotor spring bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106679976A CN106679976A (en) | 2017-05-17 |
| CN106679976B true CN106679976B (en) | 2019-02-26 |
Family
ID=58866919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611068405.4A Active CN106679976B (en) | 2016-11-29 | 2016-11-29 | A kind of shimmy displacement load testing machine of tail-rotor spring bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106679976B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4089211A (en) * | 1976-11-01 | 1978-05-16 | United Technologies Corporation | Elastomeric bearing test machine |
| CN1818599A (en) * | 2006-03-17 | 2006-08-16 | 燕山大学 | Apparatus for testing fatigue strength of axial hinge bearing of helicopter |
| WO2007034867A1 (en) * | 2005-09-21 | 2007-03-29 | Jtekt Corporation | Acoustic emission measuring device, power transmission device, and rolling bearing device |
| CN101363770A (en) * | 2008-10-08 | 2009-02-11 | 燕山大学 | Fatigue-tesing machine for ball socket bearing of helicopter main rotor |
| WO2011062639A3 (en) * | 2009-11-23 | 2011-10-20 | Lord Corporation | A rotary wing aircraft bearing for rotary wing aircraft motions |
| CN102235943A (en) * | 2010-05-06 | 2011-11-09 | 中国商用飞机有限责任公司 | Loading test device |
| CN104215458A (en) * | 2014-08-26 | 2014-12-17 | 中国直升机设计研究所 | Helicopter tail rotor supporting bearing fatigue test device |
| CN104236906A (en) * | 2014-08-26 | 2014-12-24 | 中国直升机设计研究所 | Device for testing radial rigidity of tail rotor steady bearings |
| CN104792532A (en) * | 2015-04-28 | 2015-07-22 | 中国船舶重工集团公司第七一一研究所 | Marine thrust bearing equipment test apparatus |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014178216A (en) * | 2013-03-15 | 2014-09-25 | Railway Technical Research Institute | Sliding friction evaluation test device |
-
2016
- 2016-11-29 CN CN201611068405.4A patent/CN106679976B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4089211A (en) * | 1976-11-01 | 1978-05-16 | United Technologies Corporation | Elastomeric bearing test machine |
| WO2007034867A1 (en) * | 2005-09-21 | 2007-03-29 | Jtekt Corporation | Acoustic emission measuring device, power transmission device, and rolling bearing device |
| CN1818599A (en) * | 2006-03-17 | 2006-08-16 | 燕山大学 | Apparatus for testing fatigue strength of axial hinge bearing of helicopter |
| CN101363770A (en) * | 2008-10-08 | 2009-02-11 | 燕山大学 | Fatigue-tesing machine for ball socket bearing of helicopter main rotor |
| WO2011062639A3 (en) * | 2009-11-23 | 2011-10-20 | Lord Corporation | A rotary wing aircraft bearing for rotary wing aircraft motions |
| CN102235943A (en) * | 2010-05-06 | 2011-11-09 | 中国商用飞机有限责任公司 | Loading test device |
| CN104215458A (en) * | 2014-08-26 | 2014-12-17 | 中国直升机设计研究所 | Helicopter tail rotor supporting bearing fatigue test device |
| CN104236906A (en) * | 2014-08-26 | 2014-12-24 | 中国直升机设计研究所 | Device for testing radial rigidity of tail rotor steady bearings |
| CN104792532A (en) * | 2015-04-28 | 2015-07-22 | 中国船舶重工集团公司第七一一研究所 | Marine thrust bearing equipment test apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106679976A (en) | 2017-05-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103522033A (en) | Tool for butt joint assembly of front transmission casing of engine and rear transmission casing of engine | |
| CN106679976B (en) | A kind of shimmy displacement load testing machine of tail-rotor spring bearing | |
| CN107907333B (en) | Cylindrical elastic bearing fatigue test device | |
| CN109625294B (en) | Hanging structure between aircraft engine and external accessory casing | |
| CN105889315A (en) | Rolling bearing and a mechanical system comprising such a rolling bearing | |
| CN104103377A (en) | Supporting wheel device used for cabling machine | |
| CN103738504B (en) | Loading support for aircraft, aircraft and shock absorption method for aircraft | |
| CN205478950U (en) | Novel adjustable bearing frame | |
| CN205437872U (en) | Control rod car adds clamping apparatus | |
| CN210069334U (en) | Cloud platform device with high accuracy is stabilized and is carried on equipment | |
| CN112503099B (en) | Axial installation shock-absorbing bearing seat of bearing | |
| CN110273969B (en) | Flexible and adjustable elastic supporting device | |
| CN213497750U (en) | Fixing tool for speed reducer shell | |
| US20160122030A1 (en) | Front engine attachment for an aircraft engine | |
| CN203189519U (en) | Stamping rolling needle bearing capable of realizing swinging function | |
| CN220748804U (en) | Deep groove ball bearing convenient to dismouting | |
| CN220397092U (en) | Unmanned aerial vehicle attitude control testing arrangement | |
| CN205602085U (en) | Fuselage and unmanned helicopter | |
| CN105834979B (en) | A kind of D series reduction clamp for assembling with protection function | |
| CN112171571B (en) | Assembly quality for dynamic balance of aircraft engine fan rotor assembly | |
| CN216111549U (en) | Oil cylinder buffer structure | |
| CN212318709U (en) | Shockproof high-precision gear | |
| CN212510086U (en) | Engine supporting structure capable of absorbing deflection torque | |
| CN108087433B (en) | Backup pad location frock and have its bearing equipment | |
| CN217476993U (en) | Multi-position directional universal wheel device |
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 |