CN109340296A - A kind of damper to prolong the service life - Google Patents
A kind of damper to prolong the service life Download PDFInfo
- Publication number
- CN109340296A CN109340296A CN201811337340.8A CN201811337340A CN109340296A CN 109340296 A CN109340296 A CN 109340296A CN 201811337340 A CN201811337340 A CN 201811337340A CN 109340296 A CN109340296 A CN 109340296A
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- CN
- China
- Prior art keywords
- dashpot
- locking circle
- guider
- fuel tank
- piston rod
- 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.)
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Classifications
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- 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
- F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
- F16F9/14—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
- F16F9/16—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts
- F16F9/18—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein
- F16F9/19—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein with a single cylinder and of single-tube type
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- 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
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- 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
- F16F9/3214—Constructional features of pistons
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- 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
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- 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
- F16F9/38—Covers for protection or appearance
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The invention discloses the dampers that one kind can prolong the service life, it is related to automobile absorber field, aim to solve the problem that it is traditional can the short problem of limit shock absorber service life, its key points of the technical solution are that: including fuel tank, the dust cover that covers at fuel tank one end, the piston rod for being arranged in fuel tank end and being fixedly connected in the middle part of dust cover, one end that the piston rod protrudes into fuel tank is connected with piston, the fuel tank is fixedly installed guidance set close to the inner end portion of dust cover, and one end of the guidance set towards piston is provided with fluid power limit assembly.The damper that one kind of the invention can prolong the service life, by the way that traditional hard collision is changed to fluid power limit, pass through the approximate closed cavity of formation between locking circle and guider, it is realized using the oil pressure in cavity and the fluid power of locking circle is limited, reduce the hard collision to guider, to effectively extend the service life of damper.
Description
Technical field
The present invention relates to the technical field of damper, the damper that can prolong the service life more particularly, to one kind.
Background technique
Automobile is when by uneven road surface, although the shock-absorbing spring in suspension system can filter the vibration on road surface, bullet
Spring itself also has reciprocating motion, and damper is exactly for inhibiting this spring back and forth to jump.The structure of damper is band
Have in the piston rod insertion cylinder of piston, oil is full of in cylinder, has throttle orifice on piston, so that the two parts split by piston are empty
Between in oil can complement each other.
The working principle of damper is the damping when being there is relative motion by vibration between vehicle frame and vehicle bridge or vehicle body and vehicle bridge
Piston in device moves up and down, the oil liquid in snubber cavity just repeatedly flow into another chamber from chamber by different gaps
Interior, the friction between hole wall and oil liquid at this time and the intermolecular interior friction of oil liquid form damping force to vibration, make thump energy
It is converted into oil liquid thermal energy, then is dispersed into atmosphere by absorber.Guider is one of the important part in damper, it is right
The movement of piston rod plays good guiding role in damper, guarantees the ride comfort of piston in the process of running, while in piston
Working cylinder is connected to oil storage cylinder by the oilhole of guider in motion process.
Existing damper is in order to realize the limit to piston rod, and usually there are two types of forms, and one is by piston rod
Upper setting limited block, most of vehicular shock absorber limited blocks are cylindrical rubber parts, and waist is simple straight wall state, in this way if
Hardness setting is excessively high, will appear sharp collision abnormal sound when hitting limit, if hardness setting is too low, displacement meeting again when limit
Excessive, damper limited block is easy to rupture at waist straight wall；Another kind is by hard between piston and guider
Limit is realized in collision, and this mode will cause biggish damage to guider, reduce the service life of guider.
Summary of the invention
In view of the deficiencies of the prior art, the present invention intends to provide a kind of damping that can prolong the service life
Device, having the advantages that, which reduces guider abrasion, prolongs the service life.
Foregoing invention purpose of the invention has the technical scheme that
A kind of damper to prolong the service life including fuel tank, the dust cover that covers at fuel tank one end, is arranged in store oil
Cylinder end is simultaneously fixedly connected on the piston rod in the middle part of dust cover, and one end that the piston rod protrudes into fuel tank is connected with piston, institute
It states fuel tank and is fixedly installed guidance set close to the inner end portion of dust cover, the guidance set is arranged towards one end of piston
There is fluid power limit assembly.
By using above-mentioned technical proposal, when damper work, piston rod realizes sliding up and down relative to fuel tank, when
When piston rod band piston is moved to close towards guidance set direction, fluid power limit is realized to piston rod by fluid power limit assembly
Position, avoids the direct hard collision of piston and guider, converts hydraulic stop for hard collision, to reduce the mill to guidance set
Damage, prolongs the service life.
The present invention is further arranged to: the guidance set includes being fixedly connected on fuel tank leading close to dust cover one end
To device, the guider offers the through-hole passed through for piston rod, and the through-hole wall is provided with oilless bearing, the guider
One end away from piston is provided with oil sealing.
By using above-mentioned technical proposal, piston rod sliding is threaded through in through-hole and can occur relative to guider axial
It is mobile, the lubricity between piston rod and guider can be improved by oilless bearing, it can be to avoid in fuel tank by oil sealing
Oil by between oilless bearing and piston rod gap outflow, play certain sealing function.
The present invention is further arranged to: the fluid power limit assembly includes being opened in guider towards piston one end and in circle
Cylindrical dashpot, the dashpot diameter are greater than the diameter of through-hole, and the piston rod fixing sleeve is equipped with and dashpot inner wall phase
The diameter of the locking circle of cooperation, the locking circle is 0.2mm smaller than the diameter of dashpot.
By using above-mentioned technical proposal, when piston rod is in tensional state, locking circle is driven to move towards guider direction
Dynamic, since the diameter of locking circle is slightly less than the diameter of dashpot and coaxial arrangement, locking circle is chimeric first to enter dashpot,
And the gap between locking circle side wall and dashpot inner wall is 0.1mm at this time, since the oil in fuel tank has certain damping
Power, therefore resistance is bigger when oil liquid flows in small gap, to apply resistance to locking circle to a certain extent；Another party
After locking circle enters in dashpot, locking circle forms approximate closed cavity with guider in dashpot, and with lock in face
Only circle moves into the increase of dashpot degree, and the oil liquid pressure in cavity is gradually increased, so that resistance is applied to locking circle, it is right
Locking circle realizes limit.
The present invention is further arranged to: one end diameter that the piston rod is used to install piston is less than piston rod and guider
Cooperate the diameter of one end, locking snare is connected to the lesser part of diameter of piston rod and is connected to the shaft shoulder side wall of piston rod, described
Locking circle offers step-like annular groove away from one end of the shaft shoulder, is provided in the annular groove for the steel wire fixed to locking circle
Retaining ring.
By using above-mentioned technical proposal, axially position is realized to locking circle by the shaft shoulder and elastic spring, works as piston rod
When compression, the shaft shoulder exerts a force to locking circle, and when piston rod stretches, elastic spring exerts a force to locking circle, to guarantee locking circle
Position is fixed.
The present invention is further arranged to: the shape of the dashpot is truncated cone-shaped, and the diameter ecto-entad of dashpot is gradually
Become smaller, the locking loop-shaped and dashpot are adapted, and the gap between locking circle and dashpot is 0.1mm.
By using above-mentioned technical proposal, piston rod drives locking circle mobile towards guider, when locking circle enters buffering
When in slot, the lesser one end of locking loop diameter enters one end that dashpot is relatively large in diameter first, at this time resistance of the oil liquid to locking circle
Power is smaller, and as locking circle continues to move to, the gap between locking circle side wall and dashpot inner wall is smaller and smaller, so that oily
Liquid is also gradually increased the resistance of locking circle, until locking circle is limited stopping completely.Such mode makees the limit of locking circle
With than milder, ascending to gradually increase, cushion performance is good, and the comfort level of car body can be improved, and improves cruising characteristic.
The present invention is further arranged to: the side wall of the dashpot is stepped setting, and the locking circle side wall is in and slow
The stairstepping setting of jet-bedding cooperation, and the gap between locking circle and dashpot inner wall is 0.1mm.
By using above-mentioned technical proposal, when piston rod drives locking circle mobile towards guider, locking circle side wall and slow
The gap formed between jet-bedding inner wall is also stairstepping, and compared with the gap in embodiment one, oil liquid flow resistance is bigger, and
Stairstepping has bending part, when the bending part of locking circle is abutted with the bending part of dashpot inner wall, it is easier to form sealing
Environment, so that the cavity better tightness formed between locking circle and guider passes through in this way when cavity volume becomes smaller
Oil pressure in cavity, which exerts a force to locking circle, realizes limit.
The present invention is further arranged to: the guider offers oil return hole, and described oil return hole one end is connected to oil sealing end
Portion, the other end are connected to the outer cylinder of fuel tank.
By using above-mentioned technical proposal, when locking circle is mobile towards guider, a small amount of oil in dashpot by
Pressure can enter in the cavity for installing oil sealing by the gap of oilless bearing, can be by this part oil liquid by oil return hole
It is drained into the outer cylinder of fuel tank, realizes oil liquid reflux.And it is very small by the oil liquid amount in oilless bearing gap, it will not influence slow
The resistance of oil pressure in jet-bedding to locking circle.
The present invention is further arranged to: one end of locking circle towards the guider is provided with close made of elastic material
Seal ring, the width of the sealing ring are equal to the width of dashpot, and for pushing against in oilless bearing.
By using above-mentioned technical proposal, when piston rod drives locking circle mobile towards guider, the end of sealing ring
It initially enters dashpot and is pushed against with the end of oilless bearing, so that sealing is realized in the end to oilless bearing, simultaneously because close
Seal ring is made of elastic material, and by compressing to sealing ring, locking circle can continue to move into dashpot, and sealing ring and nothing
Pressure between oil bearing gradually increases, and when oil pressure is increasing in dashpot, oil liquid can be prevented between oilless bearing
Clearance flow goes out, and guarantees the leakproofness of dashpot to enhance the effect that oil pressure limits in dashpot.Seal ring material herein can be with
For rubber, the elasticity and leakproofness of rubber are preferable, can satisfy the effect of sealing.
In conclusion advantageous effects of the invention are as follows:
1. when piston rod band piston is moved to close towards guidance set direction, by fluid power limit assembly to piston rod reality
Existing fluid power limit, avoids the direct hard collision of piston and guider, converts hydraulic stop for hard collision, to reduce to guiding
The abrasion of component, prolongs the service life；
2. piston rod is in tensional state, drive locking circle mobile towards guider direction, since the diameter of locking circle is smaller
Diameter and coaxial arrangement in dashpot, therefore locking circle is chimeric into dashpot first, and locking circle side wall and buffering at this time
Gap between slot inner wall is 0.1mm, and since the oil in fuel tank has certain damping force, oil liquid is in small gap
Resistance is bigger when middle flowing, to apply resistance to locking circle to a certain extent；On the other hand when locking circle enters in dashpot
Afterwards, locking circle forms approximate closed cavity with guider in dashpot, and as locking circle moves into dashpot degree
Increase, the oil liquid pressure in cavity is gradually increased, to apply resistance to locking circle, is realized and is limited to locking circle；
3. the shape of dashpot is truncated cone-shaped, piston rod drives locking circle mobile towards guider, when locking circle enters dashpot
When interior, the lesser one end of locking loop diameter enters one end that dashpot is relatively large in diameter first, at this time resistance of the oil liquid to locking circle
Smaller, as locking circle continues to move to, the gap between locking circle side wall and dashpot inner wall is smaller and smaller, so that oil liquid
The resistance of locking circle is also gradually increased, until locking circle is limited stopping completely.Position-limiting action of such mode to locking circle
Ascending to gradually increase than milder, cushion performance is good, and the comfort level of car body can be improved, and improves cruising characteristic.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the embodiment of the present invention one.
Fig. 2 is partial structural diagram of the invention.
Fig. 3 is the structural schematic diagram of the embodiment of the present invention two.
Fig. 4 is the structural schematic diagram of the embodiment of the present invention three.
In figure, 1, fuel tank；2, dust cover；3, piston rod；4, piston；5, guidance set；6, fluid power limit assembly；7, it leads
To device；8, through-hole；9, oilless bearing；10, oil sealing；11, dashpot；12, locking circle；13, annular groove；14, elastic spring；15, it returns
Oilhole；16, sealing ring.
Specific embodiment
Below in conjunction with attached drawing, invention is further described in detail.
Embodiment one
Referring to Figures 1 and 2, the damper that can prolong the service life for one kind disclosed by the invention, including fuel tank 1, be located at
The dust cover 2 of 1 one end of fuel tank, the piston rod 3 for being arranged in 1 end of fuel tank and being fixedly connected on 2 middle part of dust cover, piston rod
3 one end for protruding into fuel tank 1 are connected with piston 4, end of the fuel tank 1 close to dust cover 2 and the position inside fuel tank 1
It is fixedly installed guidance set 5, one end of guidance set 5 towards piston 4 is provided with fluid power limit assembly 6；When damper works
When, piston rod 3 realizes sliding up and down relative to fuel tank 1, when piston rod 3 is moved to piston 4 towards 5 direction of guidance set
When close, fluid power limit is realized to piston rod 3 by fluid power limit assembly 6, avoids the direct hard collision of piston 4 Yu guider 7,
Hydraulic stop is converted by hard collision, to reduce the abrasion to guidance set 5, is prolonged the service life.
As shown in Fig. 2, guidance set 5 includes being fixedly connected on fuel tank 1 close to the guider 7 of 2 one end of dust cover, leading
The through-hole 8 passed through for piston rod 3 is offered to 7 center of device, 8 inner wall of through-hole is provided with oilless bearing 9, and guider 7 deviates from piston 4
One end be provided with oil sealing 10；The sliding of piston rod 3 is threaded through in through-hole 8 and can move axially relative to guider 7, leads to
Crossing oilless bearing 9 can be improved lubricity between piston rod 3 and guider 7, can be to avoid in fuel tank 1 by oil sealing 10
Oil plays certain sealing function by the gap outflow between oilless bearing 9 and piston rod 3.
As depicted in figs. 1 and 2, fluid power limit assembly 6 includes being opened in guider 7 towards 4 one end of piston and cylindrical
Dashpot 11,11 diameter of dashpot be greater than through-hole 8 diameter, 3 fixing sleeve of piston rod be equipped with matched with 11 inner wall of dashpot
Locking circle 12, position of the locking circle 12 on piston rod 3 can be positioned according to actual needs, the diameter ratio of locking circle 12
The small 0.2mm of the diameter of dashpot 11；When piston rod 3 is in tensional state, drive locking circle 12 mobile towards 7 direction of guider,
Since the diameter of locking circle 12 is slightly less than the diameter of dashpot 11 and coaxial arrangement, locking circle 12 is chimeric first to enter buffering
Slot 11, and the gap between 11 inner wall of 12 side wall of locking circle and dashpot is 0.1mm at this time, since the oil in fuel tank 1 has
Certain damping force, therefore resistance is bigger when oil liquid flows in small gap, to be applied to a certain extent to locking circle 12
Add resistance, by test of many times, which takes 0.1mm effect best；On the other hand after locking circle 12 enters in dashpot 11,
Locking circle 12 forms approximate closed cavity with guider 7 in dashpot 11, and as locking circle 12 moves into dashpot
The increase of 11 degree, the oil liquid pressure in cavity are gradually increased, to apply resistance to locking circle 12, are realized and are limited to locking circle 12
Position.
As shown in figure 3, one end diameter that piston rod 3 is used to install piston 4 is less than piston rod 3 and guider 7 cooperates one end
Diameter, therefore the shaft shoulder is formed at 3 side wall diameter change of piston rod, locking circle 12 is socketed on the lesser portion of 3 diameter of piston rod
Divide and be connected to the shaft shoulder side wall of piston rod 3, locking circle 12 offers step-like annular groove 13, annular groove 13 away from one end of the shaft shoulder
It is inside provided with for the elastic spring 14 fixed to locking circle 12；Axial direction is realized to locking circle 12 by the shaft shoulder and elastic spring 14
Positioning, when piston rod 3 compresses, the shaft shoulder exerts a force to locking circle 12, and when piston rod 3 stretches, elastic spring 14 is to locking circle 12
Force, to guarantee that the position of locking circle 12 is fixed.
Due to inevitably generating certain cavity in the end of oil sealing 10 when installing oil sealing 10, in guider 7
On be also provided with oil return hole 15,15 one end of oil return hole is connected to the cavity of 10 end of oil sealing, and the other end is connected to the outer of fuel tank 1
Cylinder；When locking circle 12 is mobile towards guider 7, a small amount of oil in dashpot 11 is under pressure and can pass through oilless bearing 9
Gap enters in the cavity for installing oil sealing 10, this part oil liquid can be drained into fuel tank 1 by oil return hole 15
In outer cylinder, oil liquid reflux is realized.And it is very small by the oil liquid amount in 9 gap of oilless bearing, it will not influence the oil in dashpot 11
Press the resistance to locking circle 12.
Embodiment two
It is the damper that one kind disclosed by the invention can prolong the service life referring to Fig. 3, the difference from embodiment 1 is that:
The shape of dashpot 11 is truncated cone-shaped, and the diameter ecto-entad of dashpot 11 gradually becomes smaller, i.e., from close to 12 one end of locking circle to
Away from 12 one end of locking circle, its diameter is gradually become smaller, and 12 shape of locking circle and dashpot 11 are adapted, and locking circle 12 and buffering
Gap between slot 11 is 0.1mm.
Piston rod 3 drives locking circle 12 mobile towards guider 7, when locking circle 12 enters in dashpot 11, locks first
It only enclosing the lesser one end of 12 diameters and enters one end that dashpot 11 is relatively large in diameter, oil liquid is smaller to the resistance of locking circle 12 at this time,
As locking circle 12 continues to move to, the gap between 11 inner wall of 12 side wall of locking circle and dashpot is smaller and smaller, so that oily
Liquid is also gradually increased the resistance of locking circle 12, until the limit completely of locking circle 12 is stopped.Such mode is to locking circle 12
Position-limiting action is ascending to gradually increase than milder, and cushion performance is good, and the comfort level of car body can be improved, and it is flat to improve traveling
Stability.
One end of locking circle 12 towards guider 7 is provided with sealing ring 16 made of elastic material, and sealing ring 16 is surround
In 3 circumference of piston rod and slidably, the width of sealing ring 16 is equal to the width of dashpot 11, and for pushing against in oilless bearing 9；
When piston rod 3 drives locking circle 12 mobile towards guider 7, the end of sealing ring 16 initially enter dashpot 11 and with it is oil-free
The end of bearing 9 pushes against, so that sealing is realized in the end to oilless bearing 9, simultaneously because sealing ring 16 is made of elastic material,
By compressing to sealing ring 16, locking circle 12 can continue to move into dashpot 11, and between sealing ring 16 and oilless bearing 9
Pressure gradually increase, when oil pressure is increasing in dashpot 11, can prevent oil liquid from the gap of oilless bearing 9 flow out,
Guarantee the leakproofness of dashpot 11 to enhance the effect that oil pressure limits in dashpot 11.16 material of sealing ring herein can be
Rubber, the elasticity and leakproofness of rubber are preferable, can satisfy the effect of sealing.
Embodiment three
It is the damper that one kind disclosed by the invention can prolong the service life referring to Fig. 4, the difference from embodiment 1 is that:
The side wall of dashpot 11 is stepped setting, and 12 side wall of locking circle is in stairstepping setting cooperate with dashpot 11, and locking circle
Gap between 12 and 11 inner wall of dashpot is 0.1mm.
When piston rod 3 drives locking circle 12 mobile towards guider 7, shape between 11 inner wall of 12 side wall of locking circle and dashpot
At gap be also stairstepping, compared with the gap in embodiment one, oil liquid flow resistance is bigger, and stairstepping have bending
Portion, when the bending part of locking circle 12 is abutted with the bending part of 11 inner wall of dashpot, it is easier to the environment of sealing is formed, to make
The cavity better tightness formed between locking circle 12 and guider 7 is obtained, in this way when cavity volume becomes smaller, by cavity
Oil pressure exerts a force to locking circle 12 and realizes limit.
By above three embodiments, the hard collision between locking circle 12 and guider 7 is changed into hydraulic stop lock
Only, reduce the collsion damage to guider 7, to improve the service life of guider 7.
The embodiment of present embodiment is presently preferred embodiments of the present invention, not limits protection of the invention according to this
Range, therefore: the equivalence changes that all structures under this invention, shape, principle are done, should all be covered by protection scope of the present invention it
It is interior.
Claims (8)
1. the damper that one kind can prolong the service life, it is characterised in that: including fuel tank (1), cover at fuel tank (1) one end
Dust cover (2), the piston rod (3) that is arranged in fuel tank (1) end and is fixedly connected in the middle part of dust cover (2), the piston
One end that bar (3) protrudes into fuel tank (1) is connected with piston (4), and inner end portion of the fuel tank (1) close to dust cover (2) is solid
Surely it is provided with guidance set (5), one end of guidance set (5) towards the piston (4) is provided with fluid power limit assembly (6).
2. the damper that one kind according to claim 1 can prolong the service life, it is characterised in that: the guidance set
It (5) include the guider (7) for being fixedly connected on fuel tank (1) close to dust cover (2) one end, the guider (7) offers confession
The through-hole (8) that piston rod (3) passes through, through-hole (8) inner wall are provided with oilless bearing (9), and the guider (7) deviates from piston
(4) one end is provided with oil sealing (10).
3. the damper that one kind according to claim 2 can prolong the service life, it is characterised in that: the fluid power limit group
Part (6) includes being opened in guider (7) towards piston (4) one end and dashpot (11) cylindrical, the dashpot (11)
Diameter is greater than the diameter of through-hole (8), and piston rod (3) fixing sleeve is equipped with the locking circle matched with dashpot (11) inner wall
(12), the diameter of the locking circle (12) is 0.2mm smaller than the diameter of dashpot (11).
4. the damper that one kind according to claim 3 can prolong the service life, it is characterised in that: the piston rod (3)
One end diameter for installing piston (4) is less than the diameter of piston rod (3) and guider (7) cooperation one end, locking circle (12) set
It is connected to the lesser part of piston rod (3) diameter and is connected to the shaft shoulder side wall of piston rod (3), the locking circle (12) deviates from the shaft shoulder
One end offer step-like annular groove (13), is provided in the annular groove (13) for being kept off to locking circle (12) fixed steel wire
It encloses (14).
5. the damper that one kind according to claim 3 can prolong the service life, it is characterised in that: the dashpot (11)
Shape be truncated cone-shaped, the diameter ecto-entad of dashpot (11) gradually becomes smaller, locking circle (12) shape and dashpot
(11) it is adapted, and the gap between locking circle (12) and dashpot (11) is 0.1mm.
6. the damper that one kind according to claim 3 can prolong the service life, it is characterised in that: the dashpot (11)
Side wall be stepped setting, locking circle (12) side wall is in stairstepping setting cooperate with dashpot (11), and locking circle
(12) gap between dashpot (11) inner wall is 0.1mm.
7. the damper that one kind according to claim 2 can prolong the service life, it is characterised in that: the guider (7)
It offers oil return hole (15), described oil return hole (15) one end is connected to oil sealing (10) end, and the other end is connected to fuel tank (1)
Outer cylinder.
8. the damper that one kind according to claim 4 can prolong the service life, it is characterised in that: the locking circle (12)
It is provided with the sealing ring made of elastic material (16) towards one end of guider (7), the width of the sealing ring (16) is equal to
The width of dashpot (11), and for pushing against in oilless bearing (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811337340.8A CN109340296B (en) | 2018-11-12 | 2018-11-12 | Shock absorber capable of prolonging service life |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811337340.8A CN109340296B (en) | 2018-11-12 | 2018-11-12 | Shock absorber capable of prolonging service life |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109340296A true CN109340296A (en) | 2019-02-15 |
| CN109340296B CN109340296B (en) | 2020-12-29 |
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ID=65314481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811337340.8A Active CN109340296B (en) | 2018-11-12 | 2018-11-12 | Shock absorber capable of prolonging service life |
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| Country | Link |
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| CN (1) | CN109340296B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87203523U (en) * | 1987-03-14 | 1988-02-24 | 罗良祖 | High energy-accumulating vibration-damper for vehicles |
| JPH08291839A (en) * | 1995-04-20 | 1996-11-05 | Unisia Jecs Corp | Hydraulic damping device |
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| JP2007205435A (en) * | 2006-01-31 | 2007-08-16 | Hitachi Ltd | Hydraulic shock absorber |
| CN103363007A (en) * | 2012-04-10 | 2013-10-23 | 范勇 | Damper, vehicle suspension system and vehicle |
| CN203926570U (en) * | 2014-07-10 | 2014-11-05 | 宁波金恒汽车零部件有限公司 | The anti-washing structure of vibration damper |
| WO2015004701A1 (en) * | 2013-07-12 | 2015-01-15 | Showa Corporation | Hydraulic shock absorber and cover member |
| CN107725658A (en) * | 2017-09-27 | 2018-02-23 | 中国舰船研究设计中心 | A kind of absorbing vibration isolation integrated apparatus |
| CN108027005A (en) * | 2015-09-14 | 2018-05-11 | 日立汽车系统株式会社 | Buffer |
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2018
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87203523U (en) * | 1987-03-14 | 1988-02-24 | 罗良祖 | High energy-accumulating vibration-damper for vehicles |
| JPH08291839A (en) * | 1995-04-20 | 1996-11-05 | Unisia Jecs Corp | Hydraulic damping device |
| CN1560489A (en) * | 2004-02-26 | 2005-01-05 | 勇 范 | Damping device with two-rider for lubricating for automobile |
| JP2007205435A (en) * | 2006-01-31 | 2007-08-16 | Hitachi Ltd | Hydraulic shock absorber |
| CN103363007A (en) * | 2012-04-10 | 2013-10-23 | 范勇 | Damper, vehicle suspension system and vehicle |
| WO2015004701A1 (en) * | 2013-07-12 | 2015-01-15 | Showa Corporation | Hydraulic shock absorber and cover member |
| CN203926570U (en) * | 2014-07-10 | 2014-11-05 | 宁波金恒汽车零部件有限公司 | The anti-washing structure of vibration damper |
| CN108027005A (en) * | 2015-09-14 | 2018-05-11 | 日立汽车系统株式会社 | Buffer |
| CN107725658A (en) * | 2017-09-27 | 2018-02-23 | 中国舰船研究设计中心 | A kind of absorbing vibration isolation integrated apparatus |
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| CN109340296B (en) | 2020-12-29 |
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