CN106704451A - Multilevel buffer shock absorber - Google Patents

Multilevel buffer shock absorber Download PDF

Info

Publication number
CN106704451A
CN106704451A CN201510785284.4A CN201510785284A CN106704451A CN 106704451 A CN106704451 A CN 106704451A CN 201510785284 A CN201510785284 A CN 201510785284A CN 106704451 A CN106704451 A CN 106704451A
Authority
CN
China
Prior art keywords
inner barrel
damping
outer cylinder
floating piston
shock absorber
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
Application number
CN201510785284.4A
Other languages
Chinese (zh)
Inventor
傅严锋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chongqing Feng Feng Technology Co Ltd
Original Assignee
Chongqing Feng Feng Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Chongqing Feng Feng Technology Co Ltd filed Critical Chongqing Feng Feng Technology Co Ltd
Priority to CN201510785284.4A priority Critical patent/CN106704451A/en
Publication of CN106704451A publication Critical patent/CN106704451A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/3207—Constructional features
    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/36—Special sealings, including sealings or guides for piston-rods
    • F16F9/362—Combination of sealing and guide arrangements for piston rods

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Damping Devices (AREA)

Abstract

The invention discloses a multilevel buffer shock absorber. The multilevel buffer shock absorber is characterized in that the upper end of an outer barrel body is sealed; the lower end of the outer barrel body is open; the upper end of an inner barrel body is open; the lower end of the inner barrel body is sealed; a first damping body is arranged at the top of the inner barrel body; a spring, a second floating plug, a second damping body and a first floating plug are arranged inside the inner barrel body from bottom to top; one end of the spring is connected with the second floating plug; the other end of the spring is connected with the inner surface of the bottom of the inner barrel body; a first damping hole is formed in the first damping body; a second damping hole is formed in the second damping body; the inner barrel body is arranged in the outer barrel body in a sliding manner; an oil pressure space is formed between the top end of the inner barrel body and the top end of the outer barrel body; and the multilevel buffer shock absorber further comprises a check valve arranged on the first damping body. According to the multilevel buffer shock absorber, multilevel pressure buffer is adopted, so that the suspension capability of a suspension device is improved, the requirement on material strength of the damping bodies is reduced, and the problem that the working performance of the suspension device is poor is avoided.

Description

Multi-buffer shock absorber
Technical field
The present invention relates to aircraft field, more particularly to multi-buffer shock absorber.
Background technology
Undercarriage is the special arrangement for taking off landing.During aircraft landing, always with certain speed impacts ground, undercarriage bears and slows down this shock, so as to mitigate the stand under load of aircraft.The critical component that undercarriage slows down this bump stroke is exactly shock-absorbing equipment.If the design of shock-absorbing equipment is unreasonable, will cause that aircraft bears bigger load, cause airplane design weight to improve.If shock-absorbing equipment breaks down, aircraft hard landing will be caused, airframe structure is destroyed, or even fatal crass occurs.
Existing shock-absorbing equipment uses air-fuel mixture formula structure, and it is the disadvantage is that, air cavity is susceptible to leakage.Once air cavity is leaked, the buffering effect of shock-absorbing equipment will significantly weaken, and shock-absorbing equipment cannot return.Weaker buffering effect will be in aircraft landing, and undercarriage disappears with ground first time collision rift.
Meanwhile, a damping unit is only existed in existing shock-absorbing equipment, its finite energy for absorbing.Such as in order to improve energy absorption, the damping hole on damping unit is diminished, will cause that the requirement to the strength of materials of damping unit is greatly improved, while the service behaviour for also causing shock-absorbing equipment overall seemed " hard ", influence shock-proof effect.
The content of the invention
It is to overcome the deficiencies in the prior art that the purpose of the present invention is, there is provided a kind of multi-buffer shock absorber.
The purpose of the present invention is achieved through the following technical solutions：
Multi-buffer shock absorber, including inner barrel, outer cylinder body, the first floating piston, the first damping body, the second damping body, the second floating piston and spring；Outer cylinder body upper end closed, outer cylinder body lower end opens, and inner barrel upper end opens, inner barrel lower end closed；First damping body is arranged at the top of inner barrel, spring, the second floating piston, the second damping body and the first floating piston are set gradually from bottom to up in inner barrel, one end of spring is connected with the second floating piston, and the other end of spring is connected with the bottom interior surface of inner barrel；The first damping hole is offered on first damping body, the second damping hole is offered on the second damping body；Inner barrel is slideably positioned in outer cylinder body, and the space between inner barrel top and outer cylinder body top constitutes oil pressure space；Space in inner barrel between the first floating piston and the first damping body constitutes the first slow pressure space；Space in inner barrel between the first floating piston and the second damping body constitutes the second slow pressure space；Space in inner barrel between the second damping body and the second floating piston constitutes the 3rd slow pressure space；Also include the check valve being arranged on the first damping body, check valve is outwards turned on by inner barrel.
Fluid is full of in oil pressure space, when being extruded by external force, inner barrel does compression motion relative to outer cylinder body.Fluid can now produce damping so as to absorb portion of energy during aircraft landing by the first damping hole on the first damping body.Fluid enters the first slow pressure space, promotes the first floating piston to move downward.First floating piston promotes the fluid in the second slow pressure space by the second damping hole on the second damping body, can now produce damping so as to absorb portion of energy during aircraft landing.Fluid enters the 3rd slow pressure space, promotes the second floating piston to move downward, compression spring, further energy absorption.After external force disappearance, spring promotes the second floating piston, fluid in 3rd slow pressure space is pushed back the second slow pressure space by the second floating piston, fluid amount in second slow pressure space increases, promote the first floating piston that the fluid in the first slow pressure space is pushed back into oil pressure space, fluid in oil pressure space promotes inner barrel, inner barrel is done stretching exercise relative to outer cylinder body, so realizes the return of damper.
Check valve is set so that the fluid in the first slow pressure space can faster be pushed back oil pressure space, realize returning quickly.
The present invention improves the shock-absorbing ability of shock-absorbing equipment, while reducing the requirement to the damping body strength of materials using multistage slow pressure, it is to avoid shock-absorbing equipment service behaviour crosses the problem of " hard ".
Further, it is provided with seal support part between the outer cylinder body bottom interior surface and the inner cylinder external surface.
Seal support part is set, it is to avoid the oil liquid leakage in outer cylinder body.
Further, the seal support part is connected by bearing pin with the outer cylinder body.
Further, first damping hole is opened in the center of first damping body；Second damping hole is opened in the center of second damping body.
Further, the top of the bottom of the inner barrel and the outer cylinder body is provided with connector.
Connector is used to for the present invention to be fixed on undercarriage.
In sum, the advantages of the present invention are：
1. the present invention substitutes the air in inner barrel using spring, it is to avoid air leakage cause the buffering effect of damper will significantly weaken and damper cannot return problem；
2. the present invention improves the shock-absorbing ability of shock-absorbing equipment, while reducing the requirement to the damping body strength of materials using multistage slow pressure, it is to avoid shock-absorbing equipment service behaviour crosses the problem of " hard "；
3. seal support part is set, it is to avoid the oil liquid leakage in outer cylinder body；
4. check valve is set so that the fluid in the first slow pressure space can faster be pushed back oil pressure space, realize returning quickly.
Brief description of the drawings
In order to illustrate more clearly of embodiments of the invention, the accompanying drawing to be used needed for the description embodiment of the present invention will be briefly described below.It will be apparent that drawings in the following description are only some embodiments described in the present invention, for a person skilled in the art, without creative efforts, other accompanying drawings can also be obtained according to following accompanying drawing.
Fig. 1 is structural representation of the invention；
The wherein corresponding parts title of reference is as follows：
1- inner barrels, 2- outer cylinder bodies, the floating pistons of 3- first, the damping bodies of 4- first, the damping bodies of 5- second, the floating pistons of 6- second, 7- springs, the damping holes of 8- first, the damping holes of 9- second, 10- oil pressure space, the slow pressure spaces of 11- first, the slow pressure spaces of 12- second, the slow pressure spaces of 13- the 3rd, 14- seal support parts, 15- bearing pins, 16- connectors, 17- check valves.
Specific embodiment
In order that those skilled in the art more fully understands the present invention, clear, complete description is carried out to the technical scheme in the embodiment of the present invention below in conjunction with the accompanying drawing in the embodiment of the present invention.It will be apparent that embodiment described below is only the part in the embodiment of the present invention, rather than whole.Based on the embodiment that the present invention is recorded, other all embodiments that those skilled in the art obtain without creative efforts, in the scope of protection of the invention.
Embodiment 1：
As shown in figure 1, multi-buffer shock absorber, including inner barrel 1, outer cylinder body 2, the first floating piston 3, the first damping body 4, the second damping body 5, the second floating piston 6 and spring 7；The upper end closed of outer cylinder body 2, the lower end of outer cylinder body 2 opens, and the upper end of inner barrel 1 opens, the lower end closed of inner barrel 1；First damping body 4 is arranged at the top of inner barrel 1, spring 7, the second floating piston 6, the second damping body 5 and the first floating piston 3 are set gradually from bottom to up in inner barrel 1, one end of spring 7 is connected with the second floating piston 6, and the other end of spring 7 is connected with the bottom interior surface of inner barrel 1；The first damping hole 8 is offered on first damping body 4, the second damping hole 9 is offered on the second damping body 5；Inner barrel 1 is slideably positioned in outer cylinder body 2, and the space between the top of inner barrel 1 and the top of outer cylinder body 2 constitutes oil pressure space 10；Space in inner barrel 1 between first floating piston 3 and the first damping body 4 constitutes the first slow pressure space 11；Space in inner barrel 1 between first floating piston 3 and the second damping body 5 constitutes the second slow pressure space 12；Space in inner barrel 1 between second damping body 5 and the second floating piston 6 constitutes the 3rd slow pressure space 13；Also include the check valve 17 being arranged on the first damping body 4, check valve 17 is outwards turned on by inner barrel 1.
Fluid is full of in oil pressure space 10, when being extruded by external force, inner barrel 1 does compression motion relative to outer cylinder body 2.Fluid can now produce damping so as to absorb portion of energy during aircraft landing by the first damping hole 8 on the first damping body 4.Fluid enters the first slow pressure space 11, promotes the first floating piston 3 to move downward.First floating piston 3 promotes the fluid in the second slow pressure space 12 by the second damping hole 9 on the second damping body 5, can now produce damping so as to absorb portion of energy during aircraft landing.Fluid enters the 3rd slow pressure space 13, promotes the second floating piston 6 to move downward, compression spring 7, further energy absorption.After external force disappearance, spring 7 promotes the second floating piston 6, fluid in 3rd slow pressure space 13 is pushed back the second slow pressure space 12 by the second floating piston 6, fluid amount in second slow pressure space 12 increases, promote the first floating piston 3 that the fluid in first slow pressure space 11 is pushed back into oil pressure space 10, fluid in oil pressure space 10 promotes inner barrel 1, inner barrel 1 is done stretching exercise relative to outer cylinder body 2, so realizes the return of damper.
Check valve 17 is set so that the fluid in the first slow pressure space 11 can faster be pushed back oil pressure space 10, realize returning quickly.
The present invention improves the shock-absorbing ability of shock-absorbing equipment, while reducing the requirement to the damping body strength of materials using multistage slow pressure, it is to avoid shock-absorbing equipment service behaviour crosses the problem of " hard ".
Embodiment 2：
As shown in figure 1, the present embodiment is on the basis of embodiment 1, seal support part 14 is provided between the bottom interior surface of the outer cylinder body 2 and the outer surface of the inner barrel 1.
Seal support part 8 is set, it is to avoid the oil liquid leakage in outer cylinder body 2.
Embodiment 3：
As shown in figure 1, the present embodiment is on the basis of embodiment 2, the seal support part 14 is connected by bearing pin 15 with the outer cylinder body 2.
Embodiment 4：
As shown in figure 1, the present embodiment is on the basis of above-mentioned any one embodiment, first damping hole 8 is opened in the center of first damping body 4；Second damping hole 9 is opened in the center of second damping body 5.
Embodiment 5：
As shown in figure 1, the present embodiment is on the basis of above-mentioned any one embodiment, the top of the bottom of the inner barrel 1 and the outer cylinder body 2 is provided with connector 16.
Connector 11 is used to for the present invention to be fixed on undercarriage.

Claims (5)

1. multi-buffer shock absorber, it is characterised in that：
Including inner barrel（1）, outer cylinder body（2）, the first floating piston（3）, the first damping body（4）, the second damping body（5）, the second floating piston（6）And spring（7）；
Outer cylinder body（2）Upper end closed, outer cylinder body（2）Lower end opens, inner barrel（1）Upper end opens, inner barrel（1）Lower end closed；
First damping body（4）It is arranged at inner barrel（1）Top, inner barrel（1）Spring is inside set gradually from bottom to up（7）, the second floating piston（6）, the second damping body（5）With the first floating piston（3）, spring（7）One end and the second floating piston（6）Connection, spring（7）The other end and inner barrel（1）Bottom interior surface connection；
First damping body（4）On offer the first damping hole（8）, the second damping body（5）On offer the second damping hole（9）；
Inner barrel（1）It is slideably positioned in outer cylinder body（2）In, inner barrel（1）Top and outer cylinder body（2）Space between top constitutes oil pressure space（10）；
Inner barrel（1）Interior first floating piston（3）With the first damping body（4）Between space constitute the first slow pressure space（11）；
Inner barrel（1）Interior first floating piston（3）With the second damping body（5）Between space constitute the second slow pressure space（12）；
Inner barrel（1）Interior second damping body（5）With the second floating piston（6）Between space constitute the 3rd slow pressure space（13）；
Also include being arranged at the first damping body（4）On check valve（17）, check valve（17）By inner barrel（1）Outwards conducting.
2. multi-buffer shock absorber according to claim 1, it is characterised in that：
The outer cylinder body（2）Bottom interior surface and the inner barrel（1）Seal support part is provided between outer surface（14）.
3. multi-buffer shock absorber according to claim 2, it is characterised in that：
The seal support part（14）By bearing pin（15）With the outer cylinder body（2）Connection.
4. multi-buffer shock absorber according to claim 1, it is characterised in that：
First damping hole（8）It is opened in first damping body（4）Center；
Second damping hole（9）It is opened in second damping body（5）Center.
5. the multi-buffer shock absorber according to any one in claim 1 ~ 4, it is characterised in that：
The inner barrel（1）Bottom and the outer cylinder body（2）Top be provided with connector（16）.
CN201510785284.4A 2015-11-16 2015-11-16 Multilevel buffer shock absorber Pending CN106704451A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510785284.4A CN106704451A (en) 2015-11-16 2015-11-16 Multilevel buffer shock absorber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510785284.4A CN106704451A (en) 2015-11-16 2015-11-16 Multilevel buffer shock absorber

Publications (1)

Publication Number Publication Date
CN106704451A true CN106704451A (en) 2017-05-24

Family

ID=58931936

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510785284.4A Pending CN106704451A (en) 2015-11-16 2015-11-16 Multilevel buffer shock absorber

Country Status (1)

Country Link
CN (1) CN106704451A (en)

Similar Documents

Publication Publication Date Title
CN106641084B (en) A kind of list rod damper
CN108974333B (en) Full-oil buffer and compensation device
CN206299736U (en) Shock damper
CN203247729U (en) Viscous damper with static rigidity
CN208185328U (en) A kind of general-purpose aircraft combined shock absorption device
CN106246792A (en) Self-adjustable vehicle vibration damping device and shock-dampening method
CN105626738A (en) Aircraft undercarriage mixed damping method
CN203836056U (en) Buffer for helicopter
CN106704449A (en) Multilevel buffer suspension method
CN106704444A (en) Aircraft taking off and landing suspension method
CN105626764A (en) Method for buffering undercarriage by mixing rubber and spring
CN106704464A (en) Two-way multi-level buffering shock absorber
CN105626740A (en) Multistage damping shock-absorbing apparatus
CN106704454A (en) Spring oil pressure shock absorber
CN106704451A (en) Multilevel buffer shock absorber
CN106704472A (en) Method for buffering take-off and landing impact of plane
CN105526299A (en) Two-way multi-stage damping shock absorption method
CN207814079U (en) A kind of fork truck lifting oil cylinder
CN106704452A (en) Loss-preventing shock absorber
CN105626766A (en) Two-level rubber spring mixed absorber
CN106704467A (en) Impact buffering device
CN106704455A (en) Both-way anti-damage cushioning device
CN205278210U (en) Awl pole variable damping attenuator
CN105626744A (en) Aircraft undercarriage two-level mixed damping method
CN106697270A (en) Air vehicle bi-directional damping method

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20170524

WD01 Invention patent application deemed withdrawn after publication