CN203413019U - Undercarriage buffer oil needle fixedly connecting device - Google Patents
Undercarriage buffer oil needle fixedly connecting device Download PDFInfo
- Publication number
- CN203413019U CN203413019U CN201320303673.5U CN201320303673U CN203413019U CN 203413019 U CN203413019 U CN 203413019U CN 201320303673 U CN201320303673 U CN 201320303673U CN 203413019 U CN203413019 U CN 203413019U
- Authority
- CN
- China
- Prior art keywords
- oil needle
- ring
- spindle
- lower piston
- buffer
- 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.)
- Expired - Lifetime
Links
Images
Landscapes
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model discloses an undercarriage buffer oil needle fixedly connecting device. The lower end of an oil needle of a buffer is a spherical structure; the lower spherical end of the oil needle is filled in a ball socket of a lower piston; a supporting rubber ring is sleeved on the oil needle; a screwed cover is sleeved on the supporting rubber ring and is connected with the lower piston through screw threads; a radial clearance is reserved between the screwed cover and the oil needle; a sealing ring is arranged in an annular groove outside the lower piston; the oil needle, the lower piston, the supporting rubber ring, the screwed cover and the sealing ring are pressed into the cavity of a piston rod through transition fit. Due to the fact that the supporting rubber ring has certain elasticity, while the oil needle is fixed, the freedom degree of the upper end of the oil needle can be released in certain range, in the process that the buffer is compressed or extended, when the upper end of the oil needle is deviated by manufacturing and mounting errors or deformation of the buffer, the concentricity of the oil needle and a baffle ring can be dynamically adjusted through the elasticity of the supporting rubber ring and the clearance between the screwed cover and the oil needle, and abrasion of the oil needle and the baffle ring is effectively prevented.
Description
Technical field
The utility model relates to undercarriage buffer unit structure, particularly relates to a kind of undercarriage buffer spindle fixed connection apparatus.
Background technique
Buffer is the important component part of undercarriage, is mainly used in absorbing aircraft landing and sliding the kinetic energy in process.Press the variation relation classification of damping hole area and buffer compression stroke, undercarriage buffer oilhole can be divided into stand oil hole and become oilhole.
Become oil hole structure and generally back-up ring and spindle, consist of, shield ring sleeve is in spindle outer ring, and spindle is fixed on buffering piston bar by linkage structure, and in buffer compression or stretching process, spindle can be at back-up ring inner ring along spindle axial-movement.Because each part all can exist error in installation, manufacture process, in prior art, spindle fixed structure is for being rigidly connected, during motion, cannot guarantee the concentricity of spindle and back-up ring, in buffer is installed or worked, spindle and back-up ring all can produce heavy wear, affect the efficiency of undercarriage buffer energy-absorbing.Therefore, need to design a kind of spindle fixed connection apparatus, the concentricity of energy dynamic adjustments spindle when buffer is worked, prevents that spindle and back-up ring from producing heavy wear.
Summary of the invention
The purpose of this utility model is to provide a kind of concentricity that can regulate spindle, and prevents the undercarriage buffer spindle fixed connection apparatus of spindle and back-up ring generation heavy wear.
A kind of undercarriage buffer spindle fixed connection apparatus, the spindle lower end of buffer is spherical structure, spherical termination below spindle is placed in the ball-and-socket of lower piston, support glue ring set on spindle, blind nut is nested with and is supporting on glue ring, and blind nut is threaded with lower piston, between blind nut and spindle, leaves radial clearance, seal ring is installed in lower piston outer annular groove, and spindle, lower piston, support glue ring, blind nut and seal ring are pressed in piston rod cavity by transition fit.Owing to supporting glue ring, there is certain elasticity, in fixing spindle, can also discharge within the specific limits the degrees of freedom of spindle upper end, in buffer compression or stretching process, when spindle upper end exists by manufacturing and alignment error or buffer distortion cause when eccentric, support the elasticity of glue ring and the gap between blind nut and spindle, the concentricity of energy dynamic adjustments spindle and back-up ring, prevents that spindle and back-up ring from producing wearing and tearing effectively.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure 1, lower piston; 2, support glue ring; 3, blind nut; 4, seal ring; 5, spindle; 6, piston rod; 7, back-up ring.
Embodiment
A kind of undercarriage buffer spindle fixed connection apparatus, comprise lower piston 1, support glue ring 2, blind nut 3, seal ring 4, spindle 5, piston rod 6 and back-up ring 7, spindle 5 spherical termination is below placed in the ball-and-socket of lower piston 1, supporting glue ring 2 is enclosed within on spindle 5, blind nut 3 is nested with and is supporting on glue ring 2, blind nut 3 is threaded with lower piston 1, blind nut 3, supporting glue ring 2 compresses the spherical termination of spindle 5 and be fixed in the ball-and-socket of lower piston 1, between blind nut 3 and spindle 5, leave radial clearance, seal ring 4 is installed in lower piston 1 outer annular groove, prevent that the fluid in buffer from oozing out from lower piston 1 outer ring.Spindle 5, lower piston 1, support glue ring 2, blind nut 3 and seal ring 4 are pressed in piston rod 6 inner chambers by transition fit, and back-up ring 7 is fixed on buffer urceolus (not indicating in accompanying drawing 1) by other linkage structure.The drop-test that this kind of undercarriage buffer spindle means of fixation passed through a plurality of models is verified, does not find that spindle and back-up ring exist wearing and tearing in the overhaul after test.
Claims (1)
1. a undercarriage buffer spindle fixed connection apparatus, comprise lower piston (1), support glue ring (2), blind nut (3), seal ring (4), spindle (5), piston rod (6) and back-up ring (7), it is characterized in that: spindle (5) spherical termination is below placed in the ball-and-socket of lower piston (1), supporting glue ring (2) is enclosed within on spindle (5), blind nut (3) is nested with and is supporting on glue ring (2), blind nut (3) is threaded with lower piston (1), between blind nut (3) and spindle (5), leave radial clearance, seal ring (4) is installed in lower piston (1) outer annular groove, spindle (5), lower piston (1), support glue ring (2), blind nut (3) and seal ring (4) are pressed in piston rod (6) inner chamber by transition fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320303673.5U CN203413019U (en) | 2013-05-30 | 2013-05-30 | Undercarriage buffer oil needle fixedly connecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320303673.5U CN203413019U (en) | 2013-05-30 | 2013-05-30 | Undercarriage buffer oil needle fixedly connecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203413019U true CN203413019U (en) | 2014-01-29 |
Family
ID=49975908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320303673.5U Expired - Lifetime CN203413019U (en) | 2013-05-30 | 2013-05-30 | Undercarriage buffer oil needle fixedly connecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203413019U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108105314A (en) * | 2016-11-24 | 2018-06-01 | 中航贵州飞机有限责任公司 | A kind of mechanism of spindle formula buffer cushion performance |
| CN114135616A (en) * | 2021-12-17 | 2022-03-04 | 江西洪都航空工业集团有限责任公司 | Load buffer structure with rebound damping |
-
2013
- 2013-05-30 CN CN201320303673.5U patent/CN203413019U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108105314A (en) * | 2016-11-24 | 2018-06-01 | 中航贵州飞机有限责任公司 | A kind of mechanism of spindle formula buffer cushion performance |
| CN114135616A (en) * | 2021-12-17 | 2022-03-04 | 江西洪都航空工业集团有限责任公司 | Load buffer structure with rebound damping |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104368967B (en) | Device capable of adjusting and measuring pretightening force loss of ball screw pair and experiment table of device | |
| CN203413019U (en) | Undercarriage buffer oil needle fixedly connecting device | |
| CN201696543U (en) | Damping fixing device | |
| CN102734376A (en) | Sealed three-way viscoelastic damper used by aircraft on tack | |
| CN203285899U (en) | Variable oilhole structure of undercarriage buffer | |
| CN205278209U (en) | Damping adjustable damping ware | |
| CN201510908U (en) | Buffer limiting device for limiting position of vertical grinding roller | |
| CN104819238B (en) | Band expansion sleeve damping spring Vibration insulator and mounting and adjusting engineering method thereof | |
| CN104948632A (en) | Shock absorber | |
| CN204512282U (en) | A kind of two rod hydraulic damper | |
| CN204439331U (en) | A kind of long duration test compression set of vehicle spring | |
| CN204202839U (en) | The fastening self-locking nut vibration testing device of a kind of bearing | |
| CN203548420U (en) | Buffer device of hydraulic oil cylinder | |
| CN204300050U (en) | Part mounting structure in a kind of leading-edge slat ribs | |
| CN208252500U (en) | Shockproof plunger | |
| CN204127185U (en) | One is applicable to industrial machinery damping bellow type air spring | |
| CN203189775U (en) | Top-loading fixed ball valve | |
| CN206943706U (en) | A kind of combined shock callus | |
| CN203051413U (en) | Sealing bolt | |
| CN202895749U (en) | Press machine capable of flexibly connecting slider and balance cylinder | |
| CN202176702U (en) | Lubricating grease discharge device in mechanical closed space | |
| CN102777526B (en) | Seal type viscoelastic damper suitable for on-orbit application of spacecraft | |
| CN204700821U (en) | A kind of bearing assemble device for space power system | |
| CN102873903A (en) | Press with slider and balance cylinder in flexible linkage | |
| CN204512278U (en) | A kind of sealed mode hydraulic damper |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140129 |